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0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_hostkey_hash.c | #include "session_fixture.h"
#include "libssh2_config.h"
#include <libssh2.h>
#include <stdio.h>
static const char *EXPECTED_RSA_HOSTKEY =
"AAAAB3NzaC1yc2EAAAABIwAAAQEArrr/JuJmaZligyfS8vcNur+mWR2ddDQtVdhHzdKU"
"UoR6/Om6cvxpe61H1YZO1xCpLUBXmkki4HoNtYOpPB2W4V+8U4BDeVBD5crypEOE1+7B"
"Am99fnEDxYIOZq2/jTP0yQmzCpWYS3COyFmkOL7sfX1wQMeW5zQT2WKcxC6FSWbhDqrB"
"eNEGi687hJJoJ7YXgY/IdiYW5NcOuqRSWljjGS3dAJsHHWk4nJbhjEDXbPaeduMAwQU9"
"i6ELfP3r+q6wdu0P4jWaoo3De1aYxnToV/ldXykpipON4NPamsb6Ph2qlJQKypq7J4iQ"
"gkIIbCU1A31+4ExvcIVoxLQw/aTSbw==";
static const char *EXPECTED_ECDSA_HOSTKEY =
"AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBC+/syyeKJD9dC2ZH"
"9Q7iJGReR4YM3rUCMsSynkyXojdfSClGCMY7JvWlt30ESjYvxoTfSRGx6WvaqYK/vPoYQ4=";
static const char *EXPECTED_RSA_MD5_HASH_DIGEST =
"0C0ED1A5BB10275F76924CE187CE5C5E";
static const char *EXPECTED_RSA_SHA1_HASH_DIGEST =
"F3CD59E2913F4422B80F7B0A82B2B89EAE449387";
static const char *EXPECTED_RSA_SHA256_HASH_DIGEST =
"92E3DA49DF3C7F99A828F505ED8239397A5D1F62914459760F878F7510F563A3";
static const char *EXPECTED_ECDSA_MD5_HASH_DIGEST =
"0402E4D897580BBC911379CBD88BCD3D";
static const char *EXPECTED_ECDSA_SHA1_HASH_DIGEST =
"12FDAD1E3B31B10BABB00F2A8D1B9A62C326BD2F";
static const char *EXPECTED_ECDSA_SHA256_HASH_DIGEST =
"56FCD975B166C3F0342D0036E44C311A86C0EAE40713B53FC776369BAE7F5264";
static const int MD5_HASH_SIZE = 16;
static const int SHA1_HASH_SIZE = 20;
static const int SHA256_HASH_SIZE = 32;
static void calculate_digest(const char *hash, size_t hash_len, char *buffer,
size_t buffer_len)
{
size_t i;
char *p = buffer;
char *end = buffer + buffer_len;
for(i = 0; i < hash_len && p < end; ++i) {
p += snprintf(p, end - p, "%02X", (unsigned char)hash[i]);
}
}
int test(LIBSSH2_SESSION *session)
{
char buf[BUFSIZ];
const char *hostkey;
const char *md5_hash;
const char *sha1_hash;
const char *sha256_hash;
int type;
size_t len;
/* these are the host keys under test, they are currently unused */
(void)EXPECTED_RSA_HOSTKEY;
(void)EXPECTED_ECDSA_HOSTKEY;
hostkey = libssh2_session_hostkey(session, &len, &type);
if(hostkey == NULL) {
print_last_session_error("libssh2_session_hostkey");
return 1;
}
if(type == LIBSSH2_HOSTKEY_TYPE_ECDSA_256) {
md5_hash = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_MD5);
if(md5_hash == NULL) {
print_last_session_error(
"libssh2_hostkey_hash(LIBSSH2_HOSTKEY_HASH_MD5)");
return 1;
}
calculate_digest(md5_hash, MD5_HASH_SIZE, buf, BUFSIZ);
if(strcmp(buf, EXPECTED_ECDSA_MD5_HASH_DIGEST) != 0) {
fprintf(stderr,
"ECDSA MD5 hash not as expected - digest %s != %s\n",
buf, EXPECTED_ECDSA_MD5_HASH_DIGEST);
return 1;
}
sha1_hash = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
if(sha1_hash == NULL) {
print_last_session_error(
"libssh2_hostkey_hash(LIBSSH2_HOSTKEY_HASH_SHA1)");
return 1;
}
calculate_digest(sha1_hash, SHA1_HASH_SIZE, buf, BUFSIZ);
if(strcmp(buf, EXPECTED_ECDSA_SHA1_HASH_DIGEST) != 0) {
fprintf(stderr,
"ECDSA SHA1 hash not as expected - digest %s != %s\n",
buf, EXPECTED_ECDSA_SHA1_HASH_DIGEST);
return 1;
}
sha256_hash = libssh2_hostkey_hash(session,
LIBSSH2_HOSTKEY_HASH_SHA256);
if(sha256_hash == NULL) {
print_last_session_error(
"libssh2_hostkey_hash(LIBSSH2_HOSTKEY_HASH_SHA256)");
return 1;
}
calculate_digest(sha256_hash, SHA256_HASH_SIZE, buf, BUFSIZ);
if(strcmp(buf, EXPECTED_ECDSA_SHA256_HASH_DIGEST) != 0) {
fprintf(stderr,
"ECDSA SHA256 hash not as expected - digest %s != %s\n",
buf, EXPECTED_ECDSA_SHA256_HASH_DIGEST);
return 1;
}
}
else if(type == LIBSSH2_HOSTKEY_TYPE_RSA) {
md5_hash = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_MD5);
if(md5_hash == NULL) {
print_last_session_error(
"libssh2_hostkey_hash(LIBSSH2_HOSTKEY_HASH_MD5)");
return 1;
}
calculate_digest(md5_hash, MD5_HASH_SIZE, buf, BUFSIZ);
if(strcmp(buf, EXPECTED_RSA_MD5_HASH_DIGEST) != 0) {
fprintf(stderr,
"MD5 hash not as expected - digest %s != %s\n",
buf, EXPECTED_RSA_MD5_HASH_DIGEST);
return 1;
}
sha1_hash = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
if(sha1_hash == NULL) {
print_last_session_error(
"libssh2_hostkey_hash(LIBSSH2_HOSTKEY_HASH_SHA1)");
return 1;
}
calculate_digest(sha1_hash, SHA1_HASH_SIZE, buf, BUFSIZ);
if(strcmp(buf, EXPECTED_RSA_SHA1_HASH_DIGEST) != 0) {
fprintf(stderr,
"SHA1 hash not as expected - digest %s != %s\n",
buf, EXPECTED_RSA_SHA1_HASH_DIGEST);
return 1;
}
sha256_hash = libssh2_hostkey_hash(session,
LIBSSH2_HOSTKEY_HASH_SHA256);
if(sha256_hash == NULL) {
print_last_session_error(
"libssh2_hostkey_hash(LIBSSH2_HOSTKEY_HASH_SHA256)");
return 1;
}
calculate_digest(sha256_hash, SHA256_HASH_SIZE, buf, BUFSIZ);
if(strcmp(buf, EXPECTED_RSA_SHA256_HASH_DIGEST) != 0) {
fprintf(stderr,
"SHA256 hash not as expected - digest %s != %s\n",
buf, EXPECTED_RSA_SHA256_HASH_DIGEST);
return 1;
}
}
else {
fprintf(stderr, "Unexpected type of hostkey: %i\n", type);
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_keyboard_interactive_auth_fails_with_wrong_response.c | #include "session_fixture.h"
#include <libssh2.h>
#include <stdio.h>
static const char *USERNAME = "libssh2"; /* set in Dockerfile */
static const char *WRONG_PASSWORD = "i'm not the password";
static void kbd_callback(const char *name, int name_len,
const char *instruct, int instruct_len,
int num_prompts,
const LIBSSH2_USERAUTH_KBDINT_PROMPT *prompts,
LIBSSH2_USERAUTH_KBDINT_RESPONSE *responses,
void **abstract)
{
int i;
(void)abstract;
fprintf(stdout, "Kb-int name: %.*s\n", name_len, name);
fprintf(stdout, "Kb-int instruction: %.*s\n", instruct_len, instruct);
for(i = 0; i < num_prompts; ++i) {
fprintf(stdout, "Kb-int prompt %d: %.*s\n", i, prompts[i].length,
prompts[i].text);
}
if(num_prompts == 1) {
responses[0].text = strdup(WRONG_PASSWORD);
responses[0].length = strlen(WRONG_PASSWORD);
}
}
int test(LIBSSH2_SESSION *session)
{
int rc;
const char *userauth_list =
libssh2_userauth_list(session, USERNAME, strlen(USERNAME));
if(userauth_list == NULL) {
print_last_session_error("libssh2_userauth_list");
return 1;
}
if(strstr(userauth_list, "keyboard-interactive") == NULL) {
fprintf(stderr,
"'keyboard-interactive' was expected in userauth list: %s\n",
userauth_list);
return 1;
}
rc = libssh2_userauth_keyboard_interactive_ex(
session, USERNAME, strlen(USERNAME), kbd_callback);
if(rc == 0) {
fprintf(stderr,
"Keyboard-interactive auth succeeded with wrong response\n");
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/ssh2.sh | #!/bin/sh
# Written by Simon Josefsson.
# Start sshd, invoke parameters, saving exit code, kill sshd, and
# return exit code.
srcdir=${srcdir:-$PWD}
SSHD=${SSHD:-/usr/sbin/sshd}
cmd="./ssh2${EXEEXT}"
srcdir=`cd "$srcdir"; pwd`
PRIVKEY=$srcdir/etc/user
export PRIVKEY
PUBKEY=$srcdir/etc/user.pub
export PUBKEY
if test -n "$DEBUG"; then
libssh2_sshd_params="-d -d"
fi
chmod go-rwx "$srcdir"/etc/host*
$SSHD -f /dev/null -h "$srcdir"/etc/host \
-o 'Port 4711' \
-o 'Protocol 2' \
-o "AuthorizedKeysFile $srcdir/etc/user.pub" \
-o 'UsePrivilegeSeparation no' \
-o 'StrictModes no' \
-D \
$libssh2_sshd_params &
sshdpid=$!
trap "kill ${sshdpid}; echo signal killing sshd; exit 1;" EXIT
: "started sshd (${sshdpid})"
sleep 3
: Invoking $cmd...
eval $cmd
ec=$?
: Self-test exit code $ec
: "killing sshd (${sshdpid})"
kill "${sshdpid}" > /dev/null 2>&1
trap "" EXIT
exit $ec
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/openssh_fixture.h | /* Copyright (C) 2016 Alexander Lamaison
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#ifndef LIBSSH2_TESTS_OPENSSH_FIXTURE_H
#define LIBSSH2_TESTS_OPENSSH_FIXTURE_H
int start_openssh_fixture();
void stop_openssh_fixture();
int open_socket_to_openssh_server();
#endif
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_public_key_auth_succeeds_with_correct_rsa_openssh_key.c | #include "session_fixture.h"
#include <libssh2.h>
#include <stdio.h>
/* configured in Dockerfile */
static const char *USERNAME = "libssh2";
static const char *KEY_FILE_PRIVATE = "key_rsa_openssh";
static const char *KEY_FILE_PUBLIC = "key_rsa_openssh.pub";
int test(LIBSSH2_SESSION *session)
{
int rc;
const char *userauth_list =
libssh2_userauth_list(session, USERNAME, strlen(USERNAME));
if(userauth_list == NULL) {
print_last_session_error("libssh2_userauth_list");
return 1;
}
if(strstr(userauth_list, "publickey") == NULL) {
fprintf(stderr, "'publickey' was expected in userauth list: %s\n",
userauth_list);
return 1;
}
rc = libssh2_userauth_publickey_fromfile_ex(
session, USERNAME, strlen(USERNAME), KEY_FILE_PUBLIC, KEY_FILE_PRIVATE,
NULL);
if(rc != 0) {
print_last_session_error("libssh2_userauth_publickey_fromfile_ex");
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/session_fixture.h | /* Copyright (C) 2016 Alexander Lamaison
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#ifndef LIBSSH2_TESTS_SESSION_FIXTURE_H
#define LIBSSH2_TESTS_SESSION_FIXTURE_H
#include <libssh2.h>
LIBSSH2_SESSION *start_session_fixture();
void stop_session_fixture();
void print_last_session_error(const char *function);
#endif
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_password_auth_fails_with_wrong_password.c | #include "session_fixture.h"
#include <libssh2.h>
#include <stdio.h>
static const char *USERNAME = "libssh2"; /* set in Dockerfile */
static const char *WRONG_PASSWORD = "i'm not the password";
int test(LIBSSH2_SESSION *session)
{
int rc;
const char *userauth_list =
libssh2_userauth_list(session, USERNAME, strlen(USERNAME));
if(userauth_list == NULL) {
print_last_session_error("libssh2_userauth_list");
return 1;
}
if(strstr(userauth_list, "password") == NULL) {
fprintf(stderr, "'password' was expected in userauth list: %s\n",
userauth_list);
return 1;
}
rc = libssh2_userauth_password_ex(session, USERNAME, strlen(USERNAME),
WRONG_PASSWORD, strlen(WRONG_PASSWORD),
NULL);
if(rc == 0) {
fprintf(stderr, "Password auth succeeded with wrong password\n");
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_public_key_auth_succeeds_with_correct_signed_ecdsa_key.c | #include "session_fixture.h"
#include <libssh2.h>
#include <stdio.h>
/* configured in Dockerfile */
static const char *USERNAME = "libssh2";
static const char *KEY_FILE_PRIVATE = "signed_key_ecdsa";
static const char *KEY_FILE_PUBLIC = "signed_key_ecdsa-cert.pub";
int test(LIBSSH2_SESSION *session)
{
int rc;
const char *userauth_list = NULL;
userauth_list = libssh2_userauth_list(session, USERNAME, strlen(USERNAME));
if(userauth_list == NULL) {
print_last_session_error("libssh2_userauth_list");
return 1;
}
if(strstr(userauth_list, "publickey") == NULL) {
fprintf(stderr, "'publickey' was expected in userauth list: %s\n",
userauth_list);
return 1;
}
rc = libssh2_userauth_publickey_fromfile_ex(
session, USERNAME, strlen(USERNAME), KEY_FILE_PUBLIC, KEY_FILE_PRIVATE,
NULL);
if(rc != 0) {
print_last_session_error("libssh2_userauth_publickey_fromfile_ex");
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_public_key_auth_succeeds_with_correct_encrypted_rsa_key.c | #include "session_fixture.h"
#include <libssh2.h>
#include <stdio.h>
/* configured in Dockerfile */
static const char *USERNAME = "libssh2";
static const char *PASSWORD = "libssh2";
static const char *KEY_FILE_PRIVATE = "key_rsa_encrypted";
static const char *KEY_FILE_PUBLIC = "key_rsa_encrypted.pub";
int test(LIBSSH2_SESSION *session)
{
int rc;
const char *userauth_list =
libssh2_userauth_list(session, USERNAME, strlen(USERNAME));
if(userauth_list == NULL) {
print_last_session_error("libssh2_userauth_list");
return 1;
}
if(strstr(userauth_list, "publickey") == NULL) {
fprintf(stderr, "'publickey' was expected in userauth list: %s\n",
userauth_list);
return 1;
}
rc = libssh2_userauth_publickey_fromfile_ex(
session, USERNAME, strlen(USERNAME), KEY_FILE_PUBLIC, KEY_FILE_PRIVATE,
PASSWORD);
if(rc != 0) {
print_last_session_error("libssh2_userauth_publickey_fromfile_ex");
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/CMakeLists.txt | # Copyright (c) 2014-2016 Alexander Lamaison <[email protected]>
#
# Redistribution and use in source and binary forms,
# with or without modification, are permitted provided
# that the following conditions are met:
#
# Redistributions of source code must retain the above
# copyright notice, this list of conditions and the
# following disclaimer.
#
# Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials
# provided with the distribution.
#
# Neither the name of the copyright holder nor the names
# of any other contributors may be used to endorse or
# promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
# CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
# OF SUCH DAMAGE.
include(CheckIncludeFiles)
include(CheckFunctionExists)
include(CheckSymbolExists)
include(BundleUtilities)
include(CopyRuntimeDependencies)
include(SocketLibraries)
## Platform checks
check_include_files(inttypes.h HAVE_INTTYPES_H)
check_include_files(unistd.h HAVE_UNISTD_H)
check_include_files(sys/param.h HAVE_SYS_PARAM_H)
check_include_files(sys/socket.h HAVE_SYS_SOCKET_H)
check_include_files(arpa/inet.h HAVE_ARPA_INET_H)
check_include_files(windows.h HAVE_WINDOWS_H)
check_include_files(winsock2.h HAVE_WINSOCK2_H)
check_include_files(netinet/in.h HAVE_NETINET_IN_H)
configure_file(
"${CMAKE_CURRENT_SOURCE_DIR}/libssh2_config_cmake.h.in"
"${CMAKE_CURRENT_BINARY_DIR}/libssh2_config.h")
append_needed_socket_libraries(LIBRARIES)
## Cryptography backend choice
set(CRYPTO_BACKEND
""
CACHE
STRING
"The backend to use for cryptography: OpenSSL, Libgcrypt or WinCNG, mbedTLS
or empty to try any available")
# If the crypto backend was given, rather than searching for the first
# we are able to find, the find_package commands must abort configuration
# and report to the user.
if(CRYPTO_BACKEND)
set(SPECIFIC_CRYPTO_REQUIREMENT REQUIRED)
endif()
if(CRYPTO_BACKEND STREQUAL "OpenSSL" OR NOT CRYPTO_BACKEND)
find_package(OpenSSL ${SPECIFIC_CRYPTO_REQUIREMENT})
if(OPENSSL_FOUND)
set(CRYPTO_BACKEND "OpenSSL")
endif()
endif()
if(CRYPTO_BACKEND STREQUAL "Libgcrypt" OR NOT CRYPTO_BACKEND)
find_package(Libgcrypt ${SPECIFIC_CRYPTO_REQUIREMENT})
if(LIBGCRYPT_FOUND)
set(CRYPTO_BACKEND "Libgcrypt")
endif()
endif()
if(CRYPTO_BACKEND STREQUAL "WinCNG" OR NOT CRYPTO_BACKEND)
# The check actually compiles the header. This requires windows.h.
check_include_files("windows.h;bcrypt.h" HAVE_BCRYPT_H)
if(HAVE_BCRYPT_H)
set(CRYPTO_BACKEND "WinCNG")
endif()
endif()
if(CRYPTO_BACKEND STREQUAL "mbedTLS" OR NOT CRYPTO_BACKEND)
find_package(mbedTLS ${SPECIFIC_CRYPTO_REQUIREMENT})
if(MBEDTLS_FOUND)
set(CRYPTO_BACKEND "mbedTLS")
endif()
endif()
set(TESTS
hostkey
hostkey_hash
password_auth_succeeds_with_correct_credentials
password_auth_fails_with_wrong_password
password_auth_fails_with_wrong_username
public_key_auth_fails_with_wrong_key
public_key_auth_succeeds_with_correct_rsa_key
public_key_auth_succeeds_with_correct_encrypted_rsa_key
keyboard_interactive_auth_fails_with_wrong_response
keyboard_interactive_auth_succeeds_with_correct_response
agent_forward_succeeds
)
if(CRYPTO_BACKEND STREQUAL "OpenSSL")
list(APPEND TESTS
public_key_auth_succeeds_with_correct_rsa_openssh_key
)
if(OPENSSL_VERSION VERSION_GREATER "1.1.0")
list(APPEND TESTS
public_key_auth_succeeds_with_correct_ed25519_key
public_key_auth_succeeds_with_correct_encrypted_ed25519_key
public_key_auth_succeeds_with_correct_ed25519_key_from_mem
public_key_auth_succeeds_with_correct_ecdsa_key
public_key_auth_succeeds_with_correct_signed_ecdsa_key
)
endif()
endif()
if(NOT CRYPTO_BACKEND STREQUAL "mbedTLS")
list(APPEND TESTS
public_key_auth_succeeds_with_correct_dsa_key
)
endif()
add_library(openssh_fixture STATIC openssh_fixture.h openssh_fixture.c)
target_link_libraries(openssh_fixture ${LIBRARIES})
target_include_directories(openssh_fixture PRIVATE "${CMAKE_CURRENT_BINARY_DIR}")
add_library(session_fixture STATIC session_fixture.h session_fixture.c)
target_link_libraries(session_fixture ${LIBRARIES} openssh_fixture libssh2)
target_include_directories(session_fixture PRIVATE "${CMAKE_CURRENT_BINARY_DIR}")
add_library(runner STATIC runner.c)
target_link_libraries(runner session_fixture)
target_include_directories(runner PRIVATE "${CMAKE_CURRENT_BINARY_DIR}")
foreach(test ${TESTS})
add_executable(test_${test} test_${test}.c)
target_link_libraries(test_${test} libssh2 runner ${LIBRARIES})
target_include_directories(test_${test} PRIVATE "${CMAKE_CURRENT_BINARY_DIR}")
list(APPEND TEST_TARGETS test_${test})
add_definitions(-DFIXTURE_WORKDIR="${CMAKE_CURRENT_SOURCE_DIR}")
add_test(
NAME test_${test} COMMAND $<TARGET_FILE:test_${test}>
WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}")
endforeach()
add_target_to_copy_dependencies(
TARGET copy_test_dependencies
DEPENDENCIES ${RUNTIME_DEPENDENCIES}
BEFORE_TARGETS ${TEST_TARGETS})
# TODO convert mansyntax.sh into CMake script.
# XXX Just because we can find all three programs, doesn't mean sh can
# find man and grep
find_program(SH_EXECUTABLE sh)
find_program(MAN_EXECUTABLE man)
find_program(GREP_EXECUTABLE grep)
mark_as_advanced(SH_EXECUTABLE MAN_EXECUTABLE GREP_EXECUTABLE)
if(SH_EXECUTABLE AND MAN_EXECUTABLE AND GREP_EXECUTABLE)
set(cmd "srcdir=${CMAKE_CURRENT_SOURCE_DIR}")
set(cmd "${cmd} ${CMAKE_CURRENT_SOURCE_DIR}/mansyntax.sh")
add_test(mansyntax ${SH_EXECUTABLE} -c "${cmd}")
endif()
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_public_key_auth_succeeds_with_correct_dsa_key.c | #include "session_fixture.h"
#include <libssh2.h>
#include <stdio.h>
/* configured in Dockerfile */
static const char *USERNAME = "libssh2";
static const char *KEY_FILE_PRIVATE = "key_dsa";
static const char *KEY_FILE_PUBLIC = "key_dsa.pub";
int test(LIBSSH2_SESSION *session)
{
int rc;
const char *userauth_list =
libssh2_userauth_list(session, USERNAME, strlen(USERNAME));
if(userauth_list == NULL) {
print_last_session_error("libssh2_userauth_list");
return 1;
}
if(strstr(userauth_list, "publickey") == NULL) {
fprintf(stderr, "'publickey' was expected in userauth list: %s\n",
userauth_list);
return 1;
}
rc = libssh2_userauth_publickey_fromfile_ex(
session, USERNAME, strlen(USERNAME), KEY_FILE_PUBLIC, KEY_FILE_PRIVATE,
NULL);
if(rc != 0) {
print_last_session_error("libssh2_userauth_publickey_fromfile_ex");
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_keyboard_interactive_auth_succeeds_with_correct_response.c | #include "session_fixture.h"
#include <libssh2.h>
#include <stdio.h>
/* configured in Dockerfile */
static const char *USERNAME = "libssh2";
static const char *PASSWORD = "my test password";
static void kbd_callback(const char *name, int name_len,
const char *instruct, int instruct_len,
int num_prompts,
const LIBSSH2_USERAUTH_KBDINT_PROMPT *prompts,
LIBSSH2_USERAUTH_KBDINT_RESPONSE *responses,
void **abstract)
{
int i;
(void)abstract;
fprintf(stdout, "Kb-int name: %.*s\n", name_len, name);
fprintf(stdout, "Kb-int instruction: %.*s\n", instruct_len, instruct);
for(i = 0; i < num_prompts; ++i) {
fprintf(stdout, "Kb-int prompt %d: %.*s\n", i, prompts[i].length,
prompts[i].text);
}
if(num_prompts == 1) {
responses[0].text = strdup(PASSWORD);
responses[0].length = strlen(PASSWORD);
}
}
int test(LIBSSH2_SESSION *session)
{
int rc;
const char *userauth_list =
libssh2_userauth_list(session, USERNAME, strlen(USERNAME));
if(userauth_list == NULL) {
print_last_session_error("libssh2_userauth_list");
return 1;
}
if(strstr(userauth_list, "keyboard-interactive") == NULL) {
fprintf(stderr,
"'keyboard-interactive' was expected in userauth list: %s\n",
userauth_list);
return 1;
}
rc = libssh2_userauth_keyboard_interactive_ex(
session, USERNAME, strlen(USERNAME), kbd_callback);
if(rc != 0) {
print_last_session_error("libssh2_userauth_keyboard_interactive_ex");
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_password_auth_fails_with_wrong_username.c | #include "session_fixture.h"
#include <libssh2.h>
#include <stdio.h>
/* configured in Dockerfile */
static const char *PASSWORD = "my test password";
static const char *WRONG_USERNAME = "i dont exist";
int test(LIBSSH2_SESSION *session)
{
int rc;
const char *userauth_list =
libssh2_userauth_list(session, WRONG_USERNAME, strlen(WRONG_USERNAME));
if(userauth_list == NULL) {
print_last_session_error("libssh2_userauth_list");
return 1;
}
if(strstr(userauth_list, "password") == NULL) {
fprintf(stderr, "'password' was expected in userauth list: %s\n",
userauth_list);
return 1;
}
rc = libssh2_userauth_password_ex(session, WRONG_USERNAME,
strlen(WRONG_USERNAME), PASSWORD,
strlen(PASSWORD), NULL);
if(rc == 0) {
fprintf(stderr, "Password auth succeeded with wrong username\n");
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_public_key_auth_succeeds_with_correct_encrypted_ed25519_key.c | #include "session_fixture.h"
#include <libssh2.h>
#include <stdio.h>
/* configured in Dockerfile */
static const char *USERNAME = "libssh2";
static const char *PASSWORD = "libssh2";
static const char *KEY_FILE_PRIVATE = "key_ed25519_encrypted";
static const char *KEY_FILE_PUBLIC = "key_ed25519_encrypted.pub";
int test(LIBSSH2_SESSION *session)
{
int rc;
const char *userauth_list = NULL;
userauth_list = libssh2_userauth_list(session, USERNAME, strlen(USERNAME));
if(userauth_list == NULL) {
print_last_session_error("libssh2_userauth_list");
return 1;
}
if(strstr(userauth_list, "publickey") == NULL) {
fprintf(stderr, "'publickey' was expected in userauth list: %s\n",
userauth_list);
return 1;
}
rc = libssh2_userauth_publickey_fromfile_ex(
session, USERNAME, strlen(USERNAME), KEY_FILE_PUBLIC, KEY_FILE_PRIVATE,
PASSWORD);
if(rc != 0) {
print_last_session_error("libssh2_userauth_publickey_fromfile_ex");
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_agent_forward_succeeds.c | #include "session_fixture.h"
#include <libssh2.h>
#include <stdio.h>
const char *USERNAME = "libssh2"; /* set in Dockerfile */
const char *KEY_FILE_PRIVATE = "key_rsa";
const char *KEY_FILE_PUBLIC = "key_rsa.pub"; /* set in Dockerfile */
int test(LIBSSH2_SESSION *session)
{
int rc;
LIBSSH2_CHANNEL *channel;
const char *userauth_list =
libssh2_userauth_list(session, USERNAME, strlen(USERNAME));
if(userauth_list == NULL) {
print_last_session_error("libssh2_userauth_list");
return 1;
}
if(strstr(userauth_list, "publickey") == NULL) {
fprintf(stderr, "'publickey' was expected in userauth list: %s\n",
userauth_list);
return 1;
}
rc = libssh2_userauth_publickey_fromfile_ex(
session, USERNAME, strlen(USERNAME), KEY_FILE_PUBLIC, KEY_FILE_PRIVATE,
NULL);
if(rc != 0) {
print_last_session_error("libssh2_userauth_publickey_fromfile_ex");
return 1;
}
channel = libssh2_channel_open_session(session);
/* if(channel == NULL) { */
/* printf("Error opening channel\n"); */
/* return 1; */
/* } */
rc = libssh2_channel_request_auth_agent(channel);
if(rc != 0) {
fprintf(stderr, "Auth agent request for agent forwarding failed, "
"error code %d\n", rc);
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/runner.c | /* Copyright (C) 2016 Alexander Lamaison
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "session_fixture.h"
extern int test(LIBSSH2_SESSION *session);
int main()
{
int exit_code = 1;
LIBSSH2_SESSION *session = start_session_fixture();
if(session != NULL) {
exit_code = (test(session) == 0) ? 0 : 1;
}
stop_session_fixture();
return exit_code;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_public_key_auth_succeeds_with_correct_ecdsa_key.c | #include "session_fixture.h"
#include <libssh2.h>
#include <stdio.h>
/* configured in Dockerfile */
static const char *USERNAME = "libssh2";
static const char *KEY_FILE_PRIVATE = "key_ecdsa";
static const char *KEY_FILE_PUBLIC = "key_ecdsa.pub";
int test(LIBSSH2_SESSION *session)
{
int rc;
const char *userauth_list = NULL;
userauth_list = libssh2_userauth_list(session, USERNAME, strlen(USERNAME));
if(userauth_list == NULL) {
print_last_session_error("libssh2_userauth_list");
return 1;
}
if(strstr(userauth_list, "publickey") == NULL) {
fprintf(stderr, "'publickey' was expected in userauth list: %s\n",
userauth_list);
return 1;
}
rc = libssh2_userauth_publickey_fromfile_ex(
session, USERNAME, strlen(USERNAME), KEY_FILE_PUBLIC, KEY_FILE_PRIVATE,
NULL);
if(rc != 0) {
print_last_session_error("libssh2_userauth_publickey_fromfile_ex");
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/test_hostkey.c | #include "session_fixture.h"
#include <libssh2.h>
#include <stdio.h>
static const char *EXPECTED_RSA_HOSTKEY =
"AAAAB3NzaC1yc2EAAAABIwAAAQEArrr/JuJmaZligyfS8vcNur+mWR2ddDQtVdhHzdKU"
"UoR6/Om6cvxpe61H1YZO1xCpLUBXmkki4HoNtYOpPB2W4V+8U4BDeVBD5crypEOE1+7B"
"Am99fnEDxYIOZq2/jTP0yQmzCpWYS3COyFmkOL7sfX1wQMeW5zQT2WKcxC6FSWbhDqrB"
"eNEGi687hJJoJ7YXgY/IdiYW5NcOuqRSWljjGS3dAJsHHWk4nJbhjEDXbPaeduMAwQU9"
"i6ELfP3r+q6wdu0P4jWaoo3De1aYxnToV/ldXykpipON4NPamsb6Ph2qlJQKypq7J4iQ"
"gkIIbCU1A31+4ExvcIVoxLQw/aTSbw==";
static const char *EXPECTED_ECDSA_HOSTKEY =
"AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBC+/syyeKJD9dC2ZH"
"9Q7iJGReR4YM3rUCMsSynkyXojdfSClGCMY7JvWlt30ESjYvxoTfSRGx6WvaqYK/vPoYQ4=";
int test(LIBSSH2_SESSION *session)
{
int rc;
size_t len;
int type;
unsigned int expected_len = 0;
char *expected_hostkey = NULL;
const char *hostkey = libssh2_session_hostkey(session, &len, &type);
if(hostkey == NULL) {
print_last_session_error("libssh2_session_hostkey");
return 1;
}
if(type == LIBSSH2_HOSTKEY_TYPE_ECDSA_256) {
rc = libssh2_base64_decode(session, &expected_hostkey, &expected_len,
EXPECTED_ECDSA_HOSTKEY,
strlen(EXPECTED_ECDSA_HOSTKEY));
}
else if(type == LIBSSH2_HOSTKEY_TYPE_RSA) {
rc = libssh2_base64_decode(session, &expected_hostkey, &expected_len,
EXPECTED_RSA_HOSTKEY,
strlen(EXPECTED_RSA_HOSTKEY));
}
else {
fprintf(stderr, "Unexpected type of hostkey: %i\n", type);
return 1;
}
if(rc != 0) {
print_last_session_error("libssh2_base64_decode");
return 1;
}
if(len != expected_len) {
fprintf(stderr, "Hostkey does not have the expected length %ld!=%d\n",
(unsigned long)len, expected_len);
return 1;
}
if(memcmp(hostkey, expected_hostkey, len) != 0) {
fprintf(stderr, "Hostkeys do not match\n");
return 1;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/openssh_fixture.c | /* Copyright (C) 2016 Alexander Lamaison
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "openssh_fixture.h"
#include "libssh2_config.h"
#ifdef HAVE_WINSOCK2_H
#include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
static int run_command_varg(char **output, const char *command, va_list args)
{
FILE *pipe;
char redirect_stderr[] = "%s 2>&1";
char command_buf[BUFSIZ];
char buf[BUFSIZ];
int ret;
size_t buf_len;
if(output) {
*output = NULL;
}
/* Format the command string */
ret = vsnprintf(command_buf, sizeof(command_buf), command, args);
if(ret < 0 || ret >= BUFSIZ) {
fprintf(stderr, "Unable to format command (%s)\n", command);
return -1;
}
/* Rewrite the command to redirect stderr to stdout to we can output it */
if(strlen(command_buf) + strlen(redirect_stderr) >= sizeof(buf)) {
fprintf(stderr, "Unable to rewrite command (%s)\n", command);
return -1;
}
ret = snprintf(buf, sizeof(buf), redirect_stderr, command_buf);
if(ret < 0 || ret >= BUFSIZ) {
fprintf(stderr, "Unable to rewrite command (%s)\n", command);
return -1;
}
fprintf(stdout, "Command: %s\n", command);
#ifdef WIN32
pipe = _popen(buf, "r");
#else
pipe = popen(buf, "r");
#endif
if(!pipe) {
fprintf(stderr, "Unable to execute command '%s'\n", command);
return -1;
}
buf[0] = 0;
buf_len = 0;
while(buf_len < (sizeof(buf) - 1) &&
fgets(&buf[buf_len], sizeof(buf) - buf_len, pipe) != NULL) {
buf_len = strlen(buf);
}
#ifdef WIN32
ret = _pclose(pipe);
#else
ret = pclose(pipe);
#endif
if(ret != 0) {
fprintf(stderr, "Error running command '%s' (exit %d): %s\n",
command, ret, buf);
}
if(output) {
/* command output may contain a trailing newline, so we trim
* whitespace here */
size_t end = strlen(buf);
while(end > 0 && isspace(buf[end - 1])) {
buf[end - 1] = '\0';
}
*output = strdup(buf);
}
return ret;
}
static int run_command(char **output, const char *command, ...)
{
va_list args;
int ret;
va_start(args, command);
ret = run_command_varg(output, command, args);
va_end(args);
return ret;
}
static int build_openssh_server_docker_image(void)
{
return run_command(NULL, "docker build --quiet "
"-t libssh2/openssh_server "
"openssh_server");
}
static const char *openssh_server_port(void)
{
return getenv("OPENSSH_SERVER_PORT");
}
static int start_openssh_server(char **container_id_out)
{
const char *container_host_port = openssh_server_port();
if(container_host_port != NULL) {
return run_command(container_id_out,
"docker run --rm -d -p %s:22 "
"libssh2/openssh_server",
container_host_port);
}
else {
return run_command(container_id_out,
"docker run --rm -d -p 22 "
"libssh2/openssh_server");
}
}
static int stop_openssh_server(char *container_id)
{
return run_command(NULL, "docker stop %s", container_id);
}
static const char *docker_machine_name(void)
{
return getenv("DOCKER_MACHINE_NAME");
}
static int is_running_inside_a_container()
{
#ifdef WIN32
return 0;
#else
const char *cgroup_filename = "/proc/self/cgroup";
FILE *f = NULL;
char *line = NULL;
size_t len = 0;
ssize_t read = 0;
int found = 0;
f = fopen(cgroup_filename, "r");
if(f == NULL) {
/* Don't go further, we are not in a container */
return 0;
}
while((read = getline(&line, &len, f)) != -1) {
if(strstr(line, "docker") != NULL) {
found = 1;
break;
}
}
fclose(f);
free(line);
return found;
#endif
}
static void portable_sleep(unsigned int seconds)
{
#ifdef WIN32
Sleep(seconds);
#else
sleep(seconds);
#endif
}
static int ip_address_from_container(char *container_id, char **ip_address_out)
{
const char *active_docker_machine = docker_machine_name();
if(active_docker_machine != NULL) {
/* This can be flaky when tests run in parallel (see
https://github.com/docker/machine/issues/2612), so we retry a few
times with exponential backoff if it fails */
int attempt_no = 0;
int wait_time = 500;
for(;;) {
int ret = run_command(ip_address_out, "docker-machine ip %s",
active_docker_machine);
if(ret == 0) {
return 0;
}
else if(attempt_no > 5) {
fprintf(
stderr,
"Unable to get IP from docker-machine after %d attempts\n",
attempt_no);
return -1;
}
else {
portable_sleep(wait_time);
++attempt_no;
wait_time *= 2;
}
}
}
else {
if(is_running_inside_a_container()) {
return run_command(ip_address_out,
"docker inspect --format "
"\"{{ .NetworkSettings.IPAddress }}\""
" %s",
container_id);
}
else {
return run_command(ip_address_out,
"docker inspect --format "
"\"{{ index (index (index "
".NetworkSettings.Ports "
"\\\"22/tcp\\\") 0) \\\"HostIp\\\" }}\" %s",
container_id);
}
}
}
static int port_from_container(char *container_id, char **port_out)
{
if(is_running_inside_a_container()) {
*port_out = strdup("22");
return 0;
}
else {
return run_command(port_out,
"docker inspect --format "
"\"{{ index (index (index .NetworkSettings.Ports "
"\\\"22/tcp\\\") 0) \\\"HostPort\\\" }}\" %s",
container_id);
}
}
static int open_socket_to_container(char *container_id)
{
char *ip_address = NULL;
char *port_string = NULL;
unsigned long hostaddr;
int sock;
struct sockaddr_in sin;
int counter = 0;
int ret = ip_address_from_container(container_id, &ip_address);
if(ret != 0) {
fprintf(stderr, "Failed to get IP address for container %s\n",
container_id);
ret = -1;
goto cleanup;
}
ret = port_from_container(container_id, &port_string);
if(ret != 0) {
fprintf(stderr, "Failed to get port for container %s\n",
container_id);
ret = -1;
}
/* 0.0.0.0 is returned by Docker for Windows, because the container
is reachable from anywhere. But we cannot connect to 0.0.0.0,
instead we assume localhost and try to connect to 127.0.0.1. */
if(ip_address && strcmp(ip_address, "0.0.0.0") == 0) {
free(ip_address);
ip_address = strdup("127.0.0.1");
}
hostaddr = inet_addr(ip_address);
if(hostaddr == (unsigned long)(-1)) {
fprintf(stderr, "Failed to convert %s host address\n", ip_address);
ret = -1;
goto cleanup;
}
sock = socket(AF_INET, SOCK_STREAM, 0);
if(sock <= 0) {
fprintf(stderr, "Failed to open socket (%d)\n", sock);
ret = -1;
goto cleanup;
}
sin.sin_family = AF_INET;
sin.sin_port = htons((short)strtol(port_string, NULL, 0));
sin.sin_addr.s_addr = hostaddr;
for(counter = 0; counter < 3; ++counter) {
if(connect(sock, (struct sockaddr *)(&sin),
sizeof(struct sockaddr_in)) != 0) {
ret = -1;
fprintf(stderr,
"Connection to %s:%s attempt #%d failed: retrying...\n",
ip_address, port_string, counter);
portable_sleep(1 + 2*counter);
}
else {
ret = sock;
break;
}
}
if(ret == -1) {
fprintf(stderr, "Failed to connect to %s:%s\n",
ip_address, port_string);
goto cleanup;
}
cleanup:
free(ip_address);
free(port_string);
return ret;
}
static char *running_container_id = NULL;
int start_openssh_fixture()
{
int ret;
#ifdef HAVE_WINSOCK2_H
WSADATA wsadata;
ret = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(ret != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", ret);
return 1;
}
#endif
ret = build_openssh_server_docker_image();
if(ret == 0) {
return start_openssh_server(&running_container_id);
}
else {
fprintf(stderr, "Failed to build docker image\n");
return ret;
}
}
void stop_openssh_fixture()
{
if(running_container_id) {
stop_openssh_server(running_container_id);
free(running_container_id);
running_container_id = NULL;
}
else {
fprintf(stderr, "Cannot stop container - none started");
}
}
int open_socket_to_openssh_server()
{
return open_socket_to_container(running_container_id);
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/ossfuzz/testinput.h | #include <inttypes.h>
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/tests/ossfuzz/ossfuzz.sh | #!/bin/bash -eu
# This script is called by the oss-fuzz main project when compiling the fuzz
# targets. This script is regression tested by ci/ossfuzz.sh.
# Save off the current folder as the build root.
export BUILD_ROOT=$PWD
echo "CC: $CC"
echo "CXX: $CXX"
echo "LIB_FUZZING_ENGINE: $LIB_FUZZING_ENGINE"
echo "CFLAGS: $CFLAGS"
echo "CXXFLAGS: $CXXFLAGS"
echo "OUT: $OUT"
export MAKEFLAGS+="-j$(nproc)"
# Install dependencies
apt-get -y install automake libtool libssl-dev zlib1g-dev
# Compile the fuzzer.
./buildconf
./configure --disable-shared \
--enable-ossfuzzers \
--disable-examples-build \
--enable-debug
make V=1
# Copy the fuzzer to the output directory.
cp -v tests/ossfuzz/ssh2_client_fuzzer $OUT/
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/include/libssh2.h | /* Copyright (c) 2004-2009, Sara Golemon <[email protected]>
* Copyright (c) 2009-2021 Daniel Stenberg
* Copyright (c) 2010 Simon Josefsson <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#ifndef LIBSSH2_H
#define LIBSSH2_H 1
#define LIBSSH2_COPYRIGHT "2004-2021 The libssh2 project and its contributors."
/* We use underscore instead of dash when appending DEV in dev versions just
to make the BANNER define (used by src/session.c) be a valid SSH
banner. Release versions have no appended strings and may of course not
have dashes either. */
#define LIBSSH2_VERSION "1.10.1_DEV"
/* The numeric version number is also available "in parts" by using these
defines: */
#define LIBSSH2_VERSION_MAJOR 1
#define LIBSSH2_VERSION_MINOR 10
#define LIBSSH2_VERSION_PATCH 1
/* This is the numeric version of the libssh2 version number, meant for easier
parsing and comparions by programs. The LIBSSH2_VERSION_NUM define will
always follow this syntax:
0xXXYYZZ
Where XX, YY and ZZ are the main version, release and patch numbers in
hexadecimal (using 8 bits each). All three numbers are always represented
using two digits. 1.2 would appear as "0x010200" while version 9.11.7
appears as "0x090b07".
This 6-digit (24 bits) hexadecimal number does not show pre-release number,
and it is always a greater number in a more recent release. It makes
comparisons with greater than and less than work.
*/
#define LIBSSH2_VERSION_NUM 0x010a01
/*
* This is the date and time when the full source package was created. The
* timestamp is not stored in the source code repo, as the timestamp is
* properly set in the tarballs by the maketgz script.
*
* The format of the date should follow this template:
*
* "Mon Feb 12 11:35:33 UTC 2007"
*/
#define LIBSSH2_TIMESTAMP "DEV"
#ifndef RC_INVOKED
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _WIN32
# include <basetsd.h>
# include <winsock2.h>
#endif
#include <stddef.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
/* Allow alternate API prefix from CFLAGS or calling app */
#ifndef LIBSSH2_API
# ifdef LIBSSH2_WIN32
# if defined(_WINDLL) || defined(libssh2_EXPORTS)
# ifdef LIBSSH2_LIBRARY
# define LIBSSH2_API __declspec(dllexport)
# else
# define LIBSSH2_API __declspec(dllimport)
# endif /* LIBSSH2_LIBRARY */
# else
# define LIBSSH2_API
# endif
# else /* !LIBSSH2_WIN32 */
# define LIBSSH2_API
# endif /* LIBSSH2_WIN32 */
#endif /* LIBSSH2_API */
#ifdef HAVE_SYS_UIO_H
# include <sys/uio.h>
#endif
#if (defined(NETWARE) && !defined(__NOVELL_LIBC__))
# include <sys/bsdskt.h>
typedef unsigned char uint8_t;
typedef unsigned short int uint16_t;
typedef unsigned int uint32_t;
typedef int int32_t;
typedef unsigned long long uint64_t;
typedef long long int64_t;
#endif
#ifdef _MSC_VER
typedef unsigned char uint8_t;
typedef unsigned short int uint16_t;
typedef unsigned int uint32_t;
typedef __int32 int32_t;
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
typedef unsigned __int64 libssh2_uint64_t;
typedef __int64 libssh2_int64_t;
#if (!defined(HAVE_SSIZE_T) && !defined(ssize_t))
typedef SSIZE_T ssize_t;
#define HAVE_SSIZE_T
#endif
#else
#include <stdint.h>
typedef unsigned long long libssh2_uint64_t;
typedef long long libssh2_int64_t;
#endif
#ifdef WIN32
typedef SOCKET libssh2_socket_t;
#define LIBSSH2_INVALID_SOCKET INVALID_SOCKET
#else /* !WIN32 */
typedef int libssh2_socket_t;
#define LIBSSH2_INVALID_SOCKET -1
#endif /* WIN32 */
/*
* Determine whether there is small or large file support on windows.
*/
#if defined(_MSC_VER) && !defined(_WIN32_WCE)
# if (_MSC_VER >= 900) && (_INTEGRAL_MAX_BITS >= 64)
# define LIBSSH2_USE_WIN32_LARGE_FILES
# else
# define LIBSSH2_USE_WIN32_SMALL_FILES
# endif
#endif
#if defined(__MINGW32__) && !defined(LIBSSH2_USE_WIN32_LARGE_FILES)
# define LIBSSH2_USE_WIN32_LARGE_FILES
#endif
#if defined(__WATCOMC__) && !defined(LIBSSH2_USE_WIN32_LARGE_FILES)
# define LIBSSH2_USE_WIN32_LARGE_FILES
#endif
#if defined(__POCC__)
# undef LIBSSH2_USE_WIN32_LARGE_FILES
#endif
#if defined(_WIN32) && !defined(LIBSSH2_USE_WIN32_LARGE_FILES) && \
!defined(LIBSSH2_USE_WIN32_SMALL_FILES)
# define LIBSSH2_USE_WIN32_SMALL_FILES
#endif
/*
* Large file (>2Gb) support using WIN32 functions.
*/
#ifdef LIBSSH2_USE_WIN32_LARGE_FILES
# include <io.h>
# include <sys/types.h>
# include <sys/stat.h>
# define LIBSSH2_STRUCT_STAT_SIZE_FORMAT "%I64d"
typedef struct _stati64 libssh2_struct_stat;
typedef __int64 libssh2_struct_stat_size;
#endif
/*
* Small file (<2Gb) support using WIN32 functions.
*/
#ifdef LIBSSH2_USE_WIN32_SMALL_FILES
# include <sys/types.h>
# include <sys/stat.h>
# ifndef _WIN32_WCE
# define LIBSSH2_STRUCT_STAT_SIZE_FORMAT "%d"
typedef struct _stat libssh2_struct_stat;
typedef off_t libssh2_struct_stat_size;
# endif
#endif
#ifndef LIBSSH2_STRUCT_STAT_SIZE_FORMAT
# ifdef __VMS
/* We have to roll our own format here because %z is a C99-ism we don't
have. */
# if __USE_OFF64_T || __USING_STD_STAT
# define LIBSSH2_STRUCT_STAT_SIZE_FORMAT "%Ld"
# else
# define LIBSSH2_STRUCT_STAT_SIZE_FORMAT "%d"
# endif
# else
# define LIBSSH2_STRUCT_STAT_SIZE_FORMAT "%zd"
# endif
typedef struct stat libssh2_struct_stat;
typedef off_t libssh2_struct_stat_size;
#endif
/* Part of every banner, user specified or not */
#define LIBSSH2_SSH_BANNER "SSH-2.0-libssh2_" LIBSSH2_VERSION
#define LIBSSH2_SSH_DEFAULT_BANNER LIBSSH2_SSH_BANNER
#define LIBSSH2_SSH_DEFAULT_BANNER_WITH_CRLF LIBSSH2_SSH_DEFAULT_BANNER "\r\n"
/* Default generate and safe prime sizes for
diffie-hellman-group-exchange-sha1 */
#define LIBSSH2_DH_GEX_MINGROUP 2048
#define LIBSSH2_DH_GEX_OPTGROUP 4096
#define LIBSSH2_DH_GEX_MAXGROUP 8192
#define LIBSSH2_DH_MAX_MODULUS_BITS 16384
/* Defaults for pty requests */
#define LIBSSH2_TERM_WIDTH 80
#define LIBSSH2_TERM_HEIGHT 24
#define LIBSSH2_TERM_WIDTH_PX 0
#define LIBSSH2_TERM_HEIGHT_PX 0
/* 1/4 second */
#define LIBSSH2_SOCKET_POLL_UDELAY 250000
/* 0.25 * 120 == 30 seconds */
#define LIBSSH2_SOCKET_POLL_MAXLOOPS 120
/* Maximum size to allow a payload to compress to, plays it safe by falling
short of spec limits */
#define LIBSSH2_PACKET_MAXCOMP 32000
/* Maximum size to allow a payload to deccompress to, plays it safe by
allowing more than spec requires */
#define LIBSSH2_PACKET_MAXDECOMP 40000
/* Maximum size for an inbound compressed payload, plays it safe by
overshooting spec limits */
#define LIBSSH2_PACKET_MAXPAYLOAD 40000
/* Malloc callbacks */
#define LIBSSH2_ALLOC_FUNC(name) void *name(size_t count, void **abstract)
#define LIBSSH2_REALLOC_FUNC(name) void *name(void *ptr, size_t count, \
void **abstract)
#define LIBSSH2_FREE_FUNC(name) void name(void *ptr, void **abstract)
typedef struct _LIBSSH2_USERAUTH_KBDINT_PROMPT
{
char *text;
unsigned int length;
unsigned char echo;
} LIBSSH2_USERAUTH_KBDINT_PROMPT;
typedef struct _LIBSSH2_USERAUTH_KBDINT_RESPONSE
{
char *text;
unsigned int length;
} LIBSSH2_USERAUTH_KBDINT_RESPONSE;
/* 'publickey' authentication callback */
#define LIBSSH2_USERAUTH_PUBLICKEY_SIGN_FUNC(name) \
int name(LIBSSH2_SESSION *session, unsigned char **sig, size_t *sig_len, \
const unsigned char *data, size_t data_len, void **abstract)
/* 'keyboard-interactive' authentication callback */
#define LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC(name_) \
void name_(const char *name, int name_len, const char *instruction, \
int instruction_len, int num_prompts, \
const LIBSSH2_USERAUTH_KBDINT_PROMPT *prompts, \
LIBSSH2_USERAUTH_KBDINT_RESPONSE *responses, void **abstract)
/* Callbacks for special SSH packets */
#define LIBSSH2_IGNORE_FUNC(name) \
void name(LIBSSH2_SESSION *session, const char *message, int message_len, \
void **abstract)
#define LIBSSH2_DEBUG_FUNC(name) \
void name(LIBSSH2_SESSION *session, int always_display, const char *message, \
int message_len, const char *language, int language_len, \
void **abstract)
#define LIBSSH2_DISCONNECT_FUNC(name) \
void name(LIBSSH2_SESSION *session, int reason, const char *message, \
int message_len, const char *language, int language_len, \
void **abstract)
#define LIBSSH2_PASSWD_CHANGEREQ_FUNC(name) \
void name(LIBSSH2_SESSION *session, char **newpw, int *newpw_len, \
void **abstract)
#define LIBSSH2_MACERROR_FUNC(name) \
int name(LIBSSH2_SESSION *session, const char *packet, int packet_len, \
void **abstract)
#define LIBSSH2_X11_OPEN_FUNC(name) \
void name(LIBSSH2_SESSION *session, LIBSSH2_CHANNEL *channel, \
const char *shost, int sport, void **abstract)
#define LIBSSH2_CHANNEL_CLOSE_FUNC(name) \
void name(LIBSSH2_SESSION *session, void **session_abstract, \
LIBSSH2_CHANNEL *channel, void **channel_abstract)
/* I/O callbacks */
#define LIBSSH2_RECV_FUNC(name) \
ssize_t name(libssh2_socket_t socket, \
void *buffer, size_t length, \
int flags, void **abstract)
#define LIBSSH2_SEND_FUNC(name) \
ssize_t name(libssh2_socket_t socket, \
const void *buffer, size_t length, \
int flags, void **abstract)
/* libssh2_session_callback_set() constants */
#define LIBSSH2_CALLBACK_IGNORE 0
#define LIBSSH2_CALLBACK_DEBUG 1
#define LIBSSH2_CALLBACK_DISCONNECT 2
#define LIBSSH2_CALLBACK_MACERROR 3
#define LIBSSH2_CALLBACK_X11 4
#define LIBSSH2_CALLBACK_SEND 5
#define LIBSSH2_CALLBACK_RECV 6
/* libssh2_session_method_pref() constants */
#define LIBSSH2_METHOD_KEX 0
#define LIBSSH2_METHOD_HOSTKEY 1
#define LIBSSH2_METHOD_CRYPT_CS 2
#define LIBSSH2_METHOD_CRYPT_SC 3
#define LIBSSH2_METHOD_MAC_CS 4
#define LIBSSH2_METHOD_MAC_SC 5
#define LIBSSH2_METHOD_COMP_CS 6
#define LIBSSH2_METHOD_COMP_SC 7
#define LIBSSH2_METHOD_LANG_CS 8
#define LIBSSH2_METHOD_LANG_SC 9
/* flags */
#define LIBSSH2_FLAG_SIGPIPE 1
#define LIBSSH2_FLAG_COMPRESS 2
typedef struct _LIBSSH2_SESSION LIBSSH2_SESSION;
typedef struct _LIBSSH2_CHANNEL LIBSSH2_CHANNEL;
typedef struct _LIBSSH2_LISTENER LIBSSH2_LISTENER;
typedef struct _LIBSSH2_KNOWNHOSTS LIBSSH2_KNOWNHOSTS;
typedef struct _LIBSSH2_AGENT LIBSSH2_AGENT;
typedef struct _LIBSSH2_POLLFD {
unsigned char type; /* LIBSSH2_POLLFD_* below */
union {
libssh2_socket_t socket; /* File descriptors -- examined with
system select() call */
LIBSSH2_CHANNEL *channel; /* Examined by checking internal state */
LIBSSH2_LISTENER *listener; /* Read polls only -- are inbound
connections waiting to be accepted? */
} fd;
unsigned long events; /* Requested Events */
unsigned long revents; /* Returned Events */
} LIBSSH2_POLLFD;
/* Poll FD Descriptor Types */
#define LIBSSH2_POLLFD_SOCKET 1
#define LIBSSH2_POLLFD_CHANNEL 2
#define LIBSSH2_POLLFD_LISTENER 3
/* Note: Win32 Doesn't actually have a poll() implementation, so some of these
values are faked with select() data */
/* Poll FD events/revents -- Match sys/poll.h where possible */
#define LIBSSH2_POLLFD_POLLIN 0x0001 /* Data available to be read or
connection available --
All */
#define LIBSSH2_POLLFD_POLLPRI 0x0002 /* Priority data available to
be read -- Socket only */
#define LIBSSH2_POLLFD_POLLEXT 0x0002 /* Extended data available to
be read -- Channel only */
#define LIBSSH2_POLLFD_POLLOUT 0x0004 /* Can may be written --
Socket/Channel */
/* revents only */
#define LIBSSH2_POLLFD_POLLERR 0x0008 /* Error Condition -- Socket */
#define LIBSSH2_POLLFD_POLLHUP 0x0010 /* HangUp/EOF -- Socket */
#define LIBSSH2_POLLFD_SESSION_CLOSED 0x0010 /* Session Disconnect */
#define LIBSSH2_POLLFD_POLLNVAL 0x0020 /* Invalid request -- Socket
Only */
#define LIBSSH2_POLLFD_POLLEX 0x0040 /* Exception Condition --
Socket/Win32 */
#define LIBSSH2_POLLFD_CHANNEL_CLOSED 0x0080 /* Channel Disconnect */
#define LIBSSH2_POLLFD_LISTENER_CLOSED 0x0080 /* Listener Disconnect */
#define HAVE_LIBSSH2_SESSION_BLOCK_DIRECTION
/* Block Direction Types */
#define LIBSSH2_SESSION_BLOCK_INBOUND 0x0001
#define LIBSSH2_SESSION_BLOCK_OUTBOUND 0x0002
/* Hash Types */
#define LIBSSH2_HOSTKEY_HASH_MD5 1
#define LIBSSH2_HOSTKEY_HASH_SHA1 2
#define LIBSSH2_HOSTKEY_HASH_SHA256 3
/* Hostkey Types */
#define LIBSSH2_HOSTKEY_TYPE_UNKNOWN 0
#define LIBSSH2_HOSTKEY_TYPE_RSA 1
#define LIBSSH2_HOSTKEY_TYPE_DSS 2
#define LIBSSH2_HOSTKEY_TYPE_ECDSA_256 3
#define LIBSSH2_HOSTKEY_TYPE_ECDSA_384 4
#define LIBSSH2_HOSTKEY_TYPE_ECDSA_521 5
#define LIBSSH2_HOSTKEY_TYPE_ED25519 6
/* Disconnect Codes (defined by SSH protocol) */
#define SSH_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT 1
#define SSH_DISCONNECT_PROTOCOL_ERROR 2
#define SSH_DISCONNECT_KEY_EXCHANGE_FAILED 3
#define SSH_DISCONNECT_RESERVED 4
#define SSH_DISCONNECT_MAC_ERROR 5
#define SSH_DISCONNECT_COMPRESSION_ERROR 6
#define SSH_DISCONNECT_SERVICE_NOT_AVAILABLE 7
#define SSH_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED 8
#define SSH_DISCONNECT_HOST_KEY_NOT_VERIFIABLE 9
#define SSH_DISCONNECT_CONNECTION_LOST 10
#define SSH_DISCONNECT_BY_APPLICATION 11
#define SSH_DISCONNECT_TOO_MANY_CONNECTIONS 12
#define SSH_DISCONNECT_AUTH_CANCELLED_BY_USER 13
#define SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE 14
#define SSH_DISCONNECT_ILLEGAL_USER_NAME 15
/* Error Codes (defined by libssh2) */
#define LIBSSH2_ERROR_NONE 0
/* The library once used -1 as a generic error return value on numerous places
through the code, which subsequently was converted to
LIBSSH2_ERROR_SOCKET_NONE uses over time. As this is a generic error code,
the goal is to never ever return this code but instead make sure that a
more accurate and descriptive error code is used. */
#define LIBSSH2_ERROR_SOCKET_NONE -1
#define LIBSSH2_ERROR_BANNER_RECV -2
#define LIBSSH2_ERROR_BANNER_SEND -3
#define LIBSSH2_ERROR_INVALID_MAC -4
#define LIBSSH2_ERROR_KEX_FAILURE -5
#define LIBSSH2_ERROR_ALLOC -6
#define LIBSSH2_ERROR_SOCKET_SEND -7
#define LIBSSH2_ERROR_KEY_EXCHANGE_FAILURE -8
#define LIBSSH2_ERROR_TIMEOUT -9
#define LIBSSH2_ERROR_HOSTKEY_INIT -10
#define LIBSSH2_ERROR_HOSTKEY_SIGN -11
#define LIBSSH2_ERROR_DECRYPT -12
#define LIBSSH2_ERROR_SOCKET_DISCONNECT -13
#define LIBSSH2_ERROR_PROTO -14
#define LIBSSH2_ERROR_PASSWORD_EXPIRED -15
#define LIBSSH2_ERROR_FILE -16
#define LIBSSH2_ERROR_METHOD_NONE -17
#define LIBSSH2_ERROR_AUTHENTICATION_FAILED -18
#define LIBSSH2_ERROR_PUBLICKEY_UNRECOGNIZED \
LIBSSH2_ERROR_AUTHENTICATION_FAILED
#define LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED -19
#define LIBSSH2_ERROR_CHANNEL_OUTOFORDER -20
#define LIBSSH2_ERROR_CHANNEL_FAILURE -21
#define LIBSSH2_ERROR_CHANNEL_REQUEST_DENIED -22
#define LIBSSH2_ERROR_CHANNEL_UNKNOWN -23
#define LIBSSH2_ERROR_CHANNEL_WINDOW_EXCEEDED -24
#define LIBSSH2_ERROR_CHANNEL_PACKET_EXCEEDED -25
#define LIBSSH2_ERROR_CHANNEL_CLOSED -26
#define LIBSSH2_ERROR_CHANNEL_EOF_SENT -27
#define LIBSSH2_ERROR_SCP_PROTOCOL -28
#define LIBSSH2_ERROR_ZLIB -29
#define LIBSSH2_ERROR_SOCKET_TIMEOUT -30
#define LIBSSH2_ERROR_SFTP_PROTOCOL -31
#define LIBSSH2_ERROR_REQUEST_DENIED -32
#define LIBSSH2_ERROR_METHOD_NOT_SUPPORTED -33
#define LIBSSH2_ERROR_INVAL -34
#define LIBSSH2_ERROR_INVALID_POLL_TYPE -35
#define LIBSSH2_ERROR_PUBLICKEY_PROTOCOL -36
#define LIBSSH2_ERROR_EAGAIN -37
#define LIBSSH2_ERROR_BUFFER_TOO_SMALL -38
#define LIBSSH2_ERROR_BAD_USE -39
#define LIBSSH2_ERROR_COMPRESS -40
#define LIBSSH2_ERROR_OUT_OF_BOUNDARY -41
#define LIBSSH2_ERROR_AGENT_PROTOCOL -42
#define LIBSSH2_ERROR_SOCKET_RECV -43
#define LIBSSH2_ERROR_ENCRYPT -44
#define LIBSSH2_ERROR_BAD_SOCKET -45
#define LIBSSH2_ERROR_KNOWN_HOSTS -46
#define LIBSSH2_ERROR_CHANNEL_WINDOW_FULL -47
#define LIBSSH2_ERROR_KEYFILE_AUTH_FAILED -48
#define LIBSSH2_ERROR_RANDGEN -49
/* this is a define to provide the old (<= 1.2.7) name */
#define LIBSSH2_ERROR_BANNER_NONE LIBSSH2_ERROR_BANNER_RECV
/* Global API */
#define LIBSSH2_INIT_NO_CRYPTO 0x0001
/*
* libssh2_init()
*
* Initialize the libssh2 functions. This typically initialize the
* crypto library. It uses a global state, and is not thread safe --
* you must make sure this function is not called concurrently.
*
* Flags can be:
* 0: Normal initialize
* LIBSSH2_INIT_NO_CRYPTO: Do not initialize the crypto library (ie.
* OPENSSL_add_cipher_algoritms() for OpenSSL
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int libssh2_init(int flags);
/*
* libssh2_exit()
*
* Exit the libssh2 functions and free's all memory used internal.
*/
LIBSSH2_API void libssh2_exit(void);
/*
* libssh2_free()
*
* Deallocate memory allocated by earlier call to libssh2 functions.
*/
LIBSSH2_API void libssh2_free(LIBSSH2_SESSION *session, void *ptr);
/*
* libssh2_session_supported_algs()
*
* Fills algs with a list of supported acryptographic algorithms. Returns a
* non-negative number (number of supported algorithms) on success or a
* negative number (an error code) on failure.
*
* NOTE: on success, algs must be deallocated (by calling libssh2_free) when
* not needed anymore
*/
LIBSSH2_API int libssh2_session_supported_algs(LIBSSH2_SESSION* session,
int method_type,
const char ***algs);
/* Session API */
LIBSSH2_API LIBSSH2_SESSION *
libssh2_session_init_ex(LIBSSH2_ALLOC_FUNC((*my_alloc)),
LIBSSH2_FREE_FUNC((*my_free)),
LIBSSH2_REALLOC_FUNC((*my_realloc)), void *abstract);
#define libssh2_session_init() libssh2_session_init_ex(NULL, NULL, NULL, NULL)
LIBSSH2_API void **libssh2_session_abstract(LIBSSH2_SESSION *session);
LIBSSH2_API void *libssh2_session_callback_set(LIBSSH2_SESSION *session,
int cbtype, void *callback);
LIBSSH2_API int libssh2_session_banner_set(LIBSSH2_SESSION *session,
const char *banner);
LIBSSH2_API int libssh2_banner_set(LIBSSH2_SESSION *session,
const char *banner);
LIBSSH2_API int libssh2_session_startup(LIBSSH2_SESSION *session, int sock);
LIBSSH2_API int libssh2_session_handshake(LIBSSH2_SESSION *session,
libssh2_socket_t sock);
LIBSSH2_API int libssh2_session_disconnect_ex(LIBSSH2_SESSION *session,
int reason,
const char *description,
const char *lang);
#define libssh2_session_disconnect(session, description) \
libssh2_session_disconnect_ex((session), SSH_DISCONNECT_BY_APPLICATION, \
(description), "")
LIBSSH2_API int libssh2_session_free(LIBSSH2_SESSION *session);
LIBSSH2_API const char *libssh2_hostkey_hash(LIBSSH2_SESSION *session,
int hash_type);
LIBSSH2_API const char *libssh2_session_hostkey(LIBSSH2_SESSION *session,
size_t *len, int *type);
LIBSSH2_API int libssh2_session_method_pref(LIBSSH2_SESSION *session,
int method_type,
const char *prefs);
LIBSSH2_API const char *libssh2_session_methods(LIBSSH2_SESSION *session,
int method_type);
LIBSSH2_API int libssh2_session_last_error(LIBSSH2_SESSION *session,
char **errmsg,
int *errmsg_len, int want_buf);
LIBSSH2_API int libssh2_session_last_errno(LIBSSH2_SESSION *session);
LIBSSH2_API int libssh2_session_set_last_error(LIBSSH2_SESSION* session,
int errcode,
const char *errmsg);
LIBSSH2_API int libssh2_session_block_directions(LIBSSH2_SESSION *session);
LIBSSH2_API int libssh2_session_flag(LIBSSH2_SESSION *session, int flag,
int value);
LIBSSH2_API const char *libssh2_session_banner_get(LIBSSH2_SESSION *session);
/* Userauth API */
LIBSSH2_API char *libssh2_userauth_list(LIBSSH2_SESSION *session,
const char *username,
unsigned int username_len);
LIBSSH2_API int libssh2_userauth_authenticated(LIBSSH2_SESSION *session);
LIBSSH2_API int
libssh2_userauth_password_ex(LIBSSH2_SESSION *session,
const char *username,
unsigned int username_len,
const char *password,
unsigned int password_len,
LIBSSH2_PASSWD_CHANGEREQ_FUNC
((*passwd_change_cb)));
#define libssh2_userauth_password(session, username, password) \
libssh2_userauth_password_ex((session), (username), \
(unsigned int)strlen(username), \
(password), (unsigned int)strlen(password), NULL)
LIBSSH2_API int
libssh2_userauth_publickey_fromfile_ex(LIBSSH2_SESSION *session,
const char *username,
unsigned int username_len,
const char *publickey,
const char *privatekey,
const char *passphrase);
#define libssh2_userauth_publickey_fromfile(session, username, publickey, \
privatekey, passphrase) \
libssh2_userauth_publickey_fromfile_ex((session), (username), \
(unsigned int)strlen(username), \
(publickey), \
(privatekey), (passphrase))
LIBSSH2_API int
libssh2_userauth_publickey(LIBSSH2_SESSION *session,
const char *username,
const unsigned char *pubkeydata,
size_t pubkeydata_len,
LIBSSH2_USERAUTH_PUBLICKEY_SIGN_FUNC
((*sign_callback)),
void **abstract);
LIBSSH2_API int
libssh2_userauth_hostbased_fromfile_ex(LIBSSH2_SESSION *session,
const char *username,
unsigned int username_len,
const char *publickey,
const char *privatekey,
const char *passphrase,
const char *hostname,
unsigned int hostname_len,
const char *local_username,
unsigned int local_username_len);
#define libssh2_userauth_hostbased_fromfile(session, username, publickey, \
privatekey, passphrase, hostname) \
libssh2_userauth_hostbased_fromfile_ex((session), (username), \
(unsigned int)strlen(username), \
(publickey), \
(privatekey), (passphrase), \
(hostname), \
(unsigned int)strlen(hostname), \
(username), \
(unsigned int)strlen(username))
LIBSSH2_API int
libssh2_userauth_publickey_frommemory(LIBSSH2_SESSION *session,
const char *username,
size_t username_len,
const char *publickeyfiledata,
size_t publickeyfiledata_len,
const char *privatekeyfiledata,
size_t privatekeyfiledata_len,
const char *passphrase);
/*
* response_callback is provided with filled by library prompts array,
* but client must allocate and fill individual responses. Responses
* array is already allocated. Responses data will be freed by libssh2
* after callback return, but before subsequent callback invocation.
*/
LIBSSH2_API int
libssh2_userauth_keyboard_interactive_ex(LIBSSH2_SESSION* session,
const char *username,
unsigned int username_len,
LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC(
(*response_callback)));
#define libssh2_userauth_keyboard_interactive(session, username, \
response_callback) \
libssh2_userauth_keyboard_interactive_ex((session), (username), \
(unsigned int)strlen(username), \
(response_callback))
LIBSSH2_API int libssh2_poll(LIBSSH2_POLLFD *fds, unsigned int nfds,
long timeout);
/* Channel API */
#define LIBSSH2_CHANNEL_WINDOW_DEFAULT (2*1024*1024)
#define LIBSSH2_CHANNEL_PACKET_DEFAULT 32768
#define LIBSSH2_CHANNEL_MINADJUST 1024
/* Extended Data Handling */
#define LIBSSH2_CHANNEL_EXTENDED_DATA_NORMAL 0
#define LIBSSH2_CHANNEL_EXTENDED_DATA_IGNORE 1
#define LIBSSH2_CHANNEL_EXTENDED_DATA_MERGE 2
#define SSH_EXTENDED_DATA_STDERR 1
/* Returned by any function that would block during a read/write operation */
#define LIBSSH2CHANNEL_EAGAIN LIBSSH2_ERROR_EAGAIN
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_channel_open_ex(LIBSSH2_SESSION *session, const char *channel_type,
unsigned int channel_type_len,
unsigned int window_size, unsigned int packet_size,
const char *message, unsigned int message_len);
#define libssh2_channel_open_session(session) \
libssh2_channel_open_ex((session), "session", sizeof("session") - 1, \
LIBSSH2_CHANNEL_WINDOW_DEFAULT, \
LIBSSH2_CHANNEL_PACKET_DEFAULT, NULL, 0)
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_channel_direct_tcpip_ex(LIBSSH2_SESSION *session, const char *host,
int port, const char *shost, int sport);
#define libssh2_channel_direct_tcpip(session, host, port) \
libssh2_channel_direct_tcpip_ex((session), (host), (port), "127.0.0.1", 22)
LIBSSH2_API LIBSSH2_LISTENER *
libssh2_channel_forward_listen_ex(LIBSSH2_SESSION *session, const char *host,
int port, int *bound_port,
int queue_maxsize);
#define libssh2_channel_forward_listen(session, port) \
libssh2_channel_forward_listen_ex((session), NULL, (port), NULL, 16)
LIBSSH2_API int libssh2_channel_forward_cancel(LIBSSH2_LISTENER *listener);
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_channel_forward_accept(LIBSSH2_LISTENER *listener);
LIBSSH2_API int libssh2_channel_setenv_ex(LIBSSH2_CHANNEL *channel,
const char *varname,
unsigned int varname_len,
const char *value,
unsigned int value_len);
#define libssh2_channel_setenv(channel, varname, value) \
libssh2_channel_setenv_ex((channel), (varname), \
(unsigned int)strlen(varname), (value), \
(unsigned int)strlen(value))
LIBSSH2_API int libssh2_channel_request_auth_agent(LIBSSH2_CHANNEL *channel);
LIBSSH2_API int libssh2_channel_request_pty_ex(LIBSSH2_CHANNEL *channel,
const char *term,
unsigned int term_len,
const char *modes,
unsigned int modes_len,
int width, int height,
int width_px, int height_px);
#define libssh2_channel_request_pty(channel, term) \
libssh2_channel_request_pty_ex((channel), (term), \
(unsigned int)strlen(term), \
NULL, 0, \
LIBSSH2_TERM_WIDTH, \
LIBSSH2_TERM_HEIGHT, \
LIBSSH2_TERM_WIDTH_PX, \
LIBSSH2_TERM_HEIGHT_PX)
LIBSSH2_API int libssh2_channel_request_pty_size_ex(LIBSSH2_CHANNEL *channel,
int width, int height,
int width_px,
int height_px);
#define libssh2_channel_request_pty_size(channel, width, height) \
libssh2_channel_request_pty_size_ex((channel), (width), (height), 0, 0)
LIBSSH2_API int libssh2_channel_x11_req_ex(LIBSSH2_CHANNEL *channel,
int single_connection,
const char *auth_proto,
const char *auth_cookie,
int screen_number);
#define libssh2_channel_x11_req(channel, screen_number) \
libssh2_channel_x11_req_ex((channel), 0, NULL, NULL, (screen_number))
LIBSSH2_API int libssh2_channel_process_startup(LIBSSH2_CHANNEL *channel,
const char *request,
unsigned int request_len,
const char *message,
unsigned int message_len);
#define libssh2_channel_shell(channel) \
libssh2_channel_process_startup((channel), "shell", sizeof("shell") - 1, \
NULL, 0)
#define libssh2_channel_exec(channel, command) \
libssh2_channel_process_startup((channel), "exec", sizeof("exec") - 1, \
(command), (unsigned int)strlen(command))
#define libssh2_channel_subsystem(channel, subsystem) \
libssh2_channel_process_startup((channel), "subsystem", \
sizeof("subsystem") - 1, (subsystem), \
(unsigned int)strlen(subsystem))
LIBSSH2_API ssize_t libssh2_channel_read_ex(LIBSSH2_CHANNEL *channel,
int stream_id, char *buf,
size_t buflen);
#define libssh2_channel_read(channel, buf, buflen) \
libssh2_channel_read_ex((channel), 0, (buf), (buflen))
#define libssh2_channel_read_stderr(channel, buf, buflen) \
libssh2_channel_read_ex((channel), SSH_EXTENDED_DATA_STDERR, (buf), (buflen))
LIBSSH2_API int libssh2_poll_channel_read(LIBSSH2_CHANNEL *channel,
int extended);
LIBSSH2_API unsigned long
libssh2_channel_window_read_ex(LIBSSH2_CHANNEL *channel,
unsigned long *read_avail,
unsigned long *window_size_initial);
#define libssh2_channel_window_read(channel) \
libssh2_channel_window_read_ex((channel), NULL, NULL)
/* libssh2_channel_receive_window_adjust is DEPRECATED, do not use! */
LIBSSH2_API unsigned long
libssh2_channel_receive_window_adjust(LIBSSH2_CHANNEL *channel,
unsigned long adjustment,
unsigned char force);
LIBSSH2_API int
libssh2_channel_receive_window_adjust2(LIBSSH2_CHANNEL *channel,
unsigned long adjustment,
unsigned char force,
unsigned int *storewindow);
LIBSSH2_API ssize_t libssh2_channel_write_ex(LIBSSH2_CHANNEL *channel,
int stream_id, const char *buf,
size_t buflen);
#define libssh2_channel_write(channel, buf, buflen) \
libssh2_channel_write_ex((channel), 0, (buf), (buflen))
#define libssh2_channel_write_stderr(channel, buf, buflen) \
libssh2_channel_write_ex((channel), SSH_EXTENDED_DATA_STDERR, \
(buf), (buflen))
LIBSSH2_API unsigned long
libssh2_channel_window_write_ex(LIBSSH2_CHANNEL *channel,
unsigned long *window_size_initial);
#define libssh2_channel_window_write(channel) \
libssh2_channel_window_write_ex((channel), NULL)
LIBSSH2_API void libssh2_session_set_blocking(LIBSSH2_SESSION* session,
int blocking);
LIBSSH2_API int libssh2_session_get_blocking(LIBSSH2_SESSION* session);
LIBSSH2_API void libssh2_channel_set_blocking(LIBSSH2_CHANNEL *channel,
int blocking);
LIBSSH2_API void libssh2_session_set_timeout(LIBSSH2_SESSION* session,
long timeout);
LIBSSH2_API long libssh2_session_get_timeout(LIBSSH2_SESSION* session);
/* libssh2_channel_handle_extended_data is DEPRECATED, do not use! */
LIBSSH2_API void libssh2_channel_handle_extended_data(LIBSSH2_CHANNEL *channel,
int ignore_mode);
LIBSSH2_API int libssh2_channel_handle_extended_data2(LIBSSH2_CHANNEL *channel,
int ignore_mode);
/* libssh2_channel_ignore_extended_data() is defined below for BC with version
* 0.1
*
* Future uses should use libssh2_channel_handle_extended_data() directly if
* LIBSSH2_CHANNEL_EXTENDED_DATA_MERGE is passed, extended data will be read
* (FIFO) from the standard data channel
*/
/* DEPRECATED */
#define libssh2_channel_ignore_extended_data(channel, ignore) \
libssh2_channel_handle_extended_data((channel), \
(ignore) ? \
LIBSSH2_CHANNEL_EXTENDED_DATA_IGNORE : \
LIBSSH2_CHANNEL_EXTENDED_DATA_NORMAL)
#define LIBSSH2_CHANNEL_FLUSH_EXTENDED_DATA -1
#define LIBSSH2_CHANNEL_FLUSH_ALL -2
LIBSSH2_API int libssh2_channel_flush_ex(LIBSSH2_CHANNEL *channel,
int streamid);
#define libssh2_channel_flush(channel) libssh2_channel_flush_ex((channel), 0)
#define libssh2_channel_flush_stderr(channel) \
libssh2_channel_flush_ex((channel), SSH_EXTENDED_DATA_STDERR)
LIBSSH2_API int libssh2_channel_get_exit_status(LIBSSH2_CHANNEL* channel);
LIBSSH2_API int libssh2_channel_get_exit_signal(LIBSSH2_CHANNEL* channel,
char **exitsignal,
size_t *exitsignal_len,
char **errmsg,
size_t *errmsg_len,
char **langtag,
size_t *langtag_len);
LIBSSH2_API int libssh2_channel_send_eof(LIBSSH2_CHANNEL *channel);
LIBSSH2_API int libssh2_channel_eof(LIBSSH2_CHANNEL *channel);
LIBSSH2_API int libssh2_channel_wait_eof(LIBSSH2_CHANNEL *channel);
LIBSSH2_API int libssh2_channel_close(LIBSSH2_CHANNEL *channel);
LIBSSH2_API int libssh2_channel_wait_closed(LIBSSH2_CHANNEL *channel);
LIBSSH2_API int libssh2_channel_free(LIBSSH2_CHANNEL *channel);
/* libssh2_scp_recv is DEPRECATED, do not use! */
LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_recv(LIBSSH2_SESSION *session,
const char *path,
struct stat *sb);
/* Use libssh2_scp_recv2 for large (> 2GB) file support on windows */
LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_recv2(LIBSSH2_SESSION *session,
const char *path,
libssh2_struct_stat *sb);
LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_send_ex(LIBSSH2_SESSION *session,
const char *path, int mode,
size_t size, long mtime,
long atime);
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_scp_send64(LIBSSH2_SESSION *session, const char *path, int mode,
libssh2_int64_t size, time_t mtime, time_t atime);
#define libssh2_scp_send(session, path, mode, size) \
libssh2_scp_send_ex((session), (path), (mode), (size), 0, 0)
LIBSSH2_API int libssh2_base64_decode(LIBSSH2_SESSION *session, char **dest,
unsigned int *dest_len,
const char *src, unsigned int src_len);
LIBSSH2_API
const char *libssh2_version(int req_version_num);
#define HAVE_LIBSSH2_KNOWNHOST_API 0x010101 /* since 1.1.1 */
#define HAVE_LIBSSH2_VERSION_API 0x010100 /* libssh2_version since 1.1 */
struct libssh2_knownhost {
unsigned int magic; /* magic stored by the library */
void *node; /* handle to the internal representation of this host */
char *name; /* this is NULL if no plain text host name exists */
char *key; /* key in base64/printable format */
int typemask;
};
/*
* libssh2_knownhost_init
*
* Init a collection of known hosts. Returns the pointer to a collection.
*
*/
LIBSSH2_API LIBSSH2_KNOWNHOSTS *
libssh2_knownhost_init(LIBSSH2_SESSION *session);
/*
* libssh2_knownhost_add
*
* Add a host and its associated key to the collection of known hosts.
*
* The 'type' argument specifies on what format the given host and keys are:
*
* plain - ascii "hostname.domain.tld"
* sha1 - SHA1(<salt> <host>) base64-encoded!
* custom - another hash
*
* If 'sha1' is selected as type, the salt must be provided to the salt
* argument. This too base64 encoded.
*
* The SHA-1 hash is what OpenSSH can be told to use in known_hosts files. If
* a custom type is used, salt is ignored and you must provide the host
* pre-hashed when checking for it in the libssh2_knownhost_check() function.
*
* The keylen parameter may be omitted (zero) if the key is provided as a
* NULL-terminated base64-encoded string.
*/
/* host format (2 bits) */
#define LIBSSH2_KNOWNHOST_TYPE_MASK 0xffff
#define LIBSSH2_KNOWNHOST_TYPE_PLAIN 1
#define LIBSSH2_KNOWNHOST_TYPE_SHA1 2 /* always base64 encoded */
#define LIBSSH2_KNOWNHOST_TYPE_CUSTOM 3
/* key format (2 bits) */
#define LIBSSH2_KNOWNHOST_KEYENC_MASK (3<<16)
#define LIBSSH2_KNOWNHOST_KEYENC_RAW (1<<16)
#define LIBSSH2_KNOWNHOST_KEYENC_BASE64 (2<<16)
/* type of key (4 bits) */
#define LIBSSH2_KNOWNHOST_KEY_MASK (15<<18)
#define LIBSSH2_KNOWNHOST_KEY_SHIFT 18
#define LIBSSH2_KNOWNHOST_KEY_RSA1 (1<<18)
#define LIBSSH2_KNOWNHOST_KEY_SSHRSA (2<<18)
#define LIBSSH2_KNOWNHOST_KEY_SSHDSS (3<<18)
#define LIBSSH2_KNOWNHOST_KEY_ECDSA_256 (4<<18)
#define LIBSSH2_KNOWNHOST_KEY_ECDSA_384 (5<<18)
#define LIBSSH2_KNOWNHOST_KEY_ECDSA_521 (6<<18)
#define LIBSSH2_KNOWNHOST_KEY_ED25519 (7<<18)
#define LIBSSH2_KNOWNHOST_KEY_UNKNOWN (15<<18)
LIBSSH2_API int
libssh2_knownhost_add(LIBSSH2_KNOWNHOSTS *hosts,
const char *host,
const char *salt,
const char *key, size_t keylen, int typemask,
struct libssh2_knownhost **store);
/*
* libssh2_knownhost_addc
*
* Add a host and its associated key to the collection of known hosts.
*
* Takes a comment argument that may be NULL. A NULL comment indicates
* there is no comment and the entry will end directly after the key
* when written out to a file. An empty string "" comment will indicate an
* empty comment which will cause a single space to be written after the key.
*
* The 'type' argument specifies on what format the given host and keys are:
*
* plain - ascii "hostname.domain.tld"
* sha1 - SHA1(<salt> <host>) base64-encoded!
* custom - another hash
*
* If 'sha1' is selected as type, the salt must be provided to the salt
* argument. This too base64 encoded.
*
* The SHA-1 hash is what OpenSSH can be told to use in known_hosts files. If
* a custom type is used, salt is ignored and you must provide the host
* pre-hashed when checking for it in the libssh2_knownhost_check() function.
*
* The keylen parameter may be omitted (zero) if the key is provided as a
* NULL-terminated base64-encoded string.
*/
LIBSSH2_API int
libssh2_knownhost_addc(LIBSSH2_KNOWNHOSTS *hosts,
const char *host,
const char *salt,
const char *key, size_t keylen,
const char *comment, size_t commentlen, int typemask,
struct libssh2_knownhost **store);
/*
* libssh2_knownhost_check
*
* Check a host and its associated key against the collection of known hosts.
*
* The type is the type/format of the given host name.
*
* plain - ascii "hostname.domain.tld"
* custom - prehashed base64 encoded. Note that this cannot use any salts.
*
*
* 'knownhost' may be set to NULL if you don't care about that info.
*
* Returns:
*
* LIBSSH2_KNOWNHOST_CHECK_* values, see below
*
*/
#define LIBSSH2_KNOWNHOST_CHECK_MATCH 0
#define LIBSSH2_KNOWNHOST_CHECK_MISMATCH 1
#define LIBSSH2_KNOWNHOST_CHECK_NOTFOUND 2
#define LIBSSH2_KNOWNHOST_CHECK_FAILURE 3
LIBSSH2_API int
libssh2_knownhost_check(LIBSSH2_KNOWNHOSTS *hosts,
const char *host, const char *key, size_t keylen,
int typemask,
struct libssh2_knownhost **knownhost);
/* this function is identital to the above one, but also takes a port
argument that allows libssh2 to do a better check */
LIBSSH2_API int
libssh2_knownhost_checkp(LIBSSH2_KNOWNHOSTS *hosts,
const char *host, int port,
const char *key, size_t keylen,
int typemask,
struct libssh2_knownhost **knownhost);
/*
* libssh2_knownhost_del
*
* Remove a host from the collection of known hosts. The 'entry' struct is
* retrieved by a call to libssh2_knownhost_check().
*
*/
LIBSSH2_API int
libssh2_knownhost_del(LIBSSH2_KNOWNHOSTS *hosts,
struct libssh2_knownhost *entry);
/*
* libssh2_knownhost_free
*
* Free an entire collection of known hosts.
*
*/
LIBSSH2_API void
libssh2_knownhost_free(LIBSSH2_KNOWNHOSTS *hosts);
/*
* libssh2_knownhost_readline()
*
* Pass in a line of a file of 'type'. It makes libssh2 read this line.
*
* LIBSSH2_KNOWNHOST_FILE_OPENSSH is the only supported type.
*
*/
LIBSSH2_API int
libssh2_knownhost_readline(LIBSSH2_KNOWNHOSTS *hosts,
const char *line, size_t len, int type);
/*
* libssh2_knownhost_readfile
*
* Add hosts+key pairs from a given file.
*
* Returns a negative value for error or number of successfully added hosts.
*
* This implementation currently only knows one 'type' (openssh), all others
* are reserved for future use.
*/
#define LIBSSH2_KNOWNHOST_FILE_OPENSSH 1
LIBSSH2_API int
libssh2_knownhost_readfile(LIBSSH2_KNOWNHOSTS *hosts,
const char *filename, int type);
/*
* libssh2_knownhost_writeline()
*
* Ask libssh2 to convert a known host to an output line for storage.
*
* Note that this function returns LIBSSH2_ERROR_BUFFER_TOO_SMALL if the given
* output buffer is too small to hold the desired output.
*
* This implementation currently only knows one 'type' (openssh), all others
* are reserved for future use.
*
*/
LIBSSH2_API int
libssh2_knownhost_writeline(LIBSSH2_KNOWNHOSTS *hosts,
struct libssh2_knownhost *known,
char *buffer, size_t buflen,
size_t *outlen, /* the amount of written data */
int type);
/*
* libssh2_knownhost_writefile
*
* Write hosts+key pairs to a given file.
*
* This implementation currently only knows one 'type' (openssh), all others
* are reserved for future use.
*/
LIBSSH2_API int
libssh2_knownhost_writefile(LIBSSH2_KNOWNHOSTS *hosts,
const char *filename, int type);
/*
* libssh2_knownhost_get()
*
* Traverse the internal list of known hosts. Pass NULL to 'prev' to get
* the first one. Or pass a pointer to the previously returned one to get the
* next.
*
* Returns:
* 0 if a fine host was stored in 'store'
* 1 if end of hosts
* [negative] on errors
*/
LIBSSH2_API int
libssh2_knownhost_get(LIBSSH2_KNOWNHOSTS *hosts,
struct libssh2_knownhost **store,
struct libssh2_knownhost *prev);
#define HAVE_LIBSSH2_AGENT_API 0x010202 /* since 1.2.2 */
struct libssh2_agent_publickey {
unsigned int magic; /* magic stored by the library */
void *node; /* handle to the internal representation of key */
unsigned char *blob; /* public key blob */
size_t blob_len; /* length of the public key blob */
char *comment; /* comment in printable format */
};
/*
* libssh2_agent_init
*
* Init an ssh-agent handle. Returns the pointer to the handle.
*
*/
LIBSSH2_API LIBSSH2_AGENT *
libssh2_agent_init(LIBSSH2_SESSION *session);
/*
* libssh2_agent_connect()
*
* Connect to an ssh-agent.
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int
libssh2_agent_connect(LIBSSH2_AGENT *agent);
/*
* libssh2_agent_list_identities()
*
* Request an ssh-agent to list identities.
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int
libssh2_agent_list_identities(LIBSSH2_AGENT *agent);
/*
* libssh2_agent_get_identity()
*
* Traverse the internal list of public keys. Pass NULL to 'prev' to get
* the first one. Or pass a pointer to the previously returned one to get the
* next.
*
* Returns:
* 0 if a fine public key was stored in 'store'
* 1 if end of public keys
* [negative] on errors
*/
LIBSSH2_API int
libssh2_agent_get_identity(LIBSSH2_AGENT *agent,
struct libssh2_agent_publickey **store,
struct libssh2_agent_publickey *prev);
/*
* libssh2_agent_userauth()
*
* Do publickey user authentication with the help of ssh-agent.
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int
libssh2_agent_userauth(LIBSSH2_AGENT *agent,
const char *username,
struct libssh2_agent_publickey *identity);
/*
* libssh2_agent_disconnect()
*
* Close a connection to an ssh-agent.
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int
libssh2_agent_disconnect(LIBSSH2_AGENT *agent);
/*
* libssh2_agent_free()
*
* Free an ssh-agent handle. This function also frees the internal
* collection of public keys.
*/
LIBSSH2_API void
libssh2_agent_free(LIBSSH2_AGENT *agent);
/*
* libssh2_agent_set_identity_path()
*
* Allows a custom agent identity socket path beyond SSH_AUTH_SOCK env
*
*/
LIBSSH2_API void
libssh2_agent_set_identity_path(LIBSSH2_AGENT *agent,
const char *path);
/*
* libssh2_agent_get_identity_path()
*
* Returns the custom agent identity socket path if set
*
*/
LIBSSH2_API const char *
libssh2_agent_get_identity_path(LIBSSH2_AGENT *agent);
/*
* libssh2_keepalive_config()
*
* Set how often keepalive messages should be sent. WANT_REPLY
* indicates whether the keepalive messages should request a response
* from the server. INTERVAL is number of seconds that can pass
* without any I/O, use 0 (the default) to disable keepalives. To
* avoid some busy-loop corner-cases, if you specify an interval of 1
* it will be treated as 2.
*
* Note that non-blocking applications are responsible for sending the
* keepalive messages using libssh2_keepalive_send().
*/
LIBSSH2_API void libssh2_keepalive_config(LIBSSH2_SESSION *session,
int want_reply,
unsigned interval);
/*
* libssh2_keepalive_send()
*
* Send a keepalive message if needed. SECONDS_TO_NEXT indicates how
* many seconds you can sleep after this call before you need to call
* it again. Returns 0 on success, or LIBSSH2_ERROR_SOCKET_SEND on
* I/O errors.
*/
LIBSSH2_API int libssh2_keepalive_send(LIBSSH2_SESSION *session,
int *seconds_to_next);
/* NOTE NOTE NOTE
libssh2_trace() has no function in builds that aren't built with debug
enabled
*/
LIBSSH2_API int libssh2_trace(LIBSSH2_SESSION *session, int bitmask);
#define LIBSSH2_TRACE_TRANS (1<<1)
#define LIBSSH2_TRACE_KEX (1<<2)
#define LIBSSH2_TRACE_AUTH (1<<3)
#define LIBSSH2_TRACE_CONN (1<<4)
#define LIBSSH2_TRACE_SCP (1<<5)
#define LIBSSH2_TRACE_SFTP (1<<6)
#define LIBSSH2_TRACE_ERROR (1<<7)
#define LIBSSH2_TRACE_PUBLICKEY (1<<8)
#define LIBSSH2_TRACE_SOCKET (1<<9)
typedef void (*libssh2_trace_handler_func)(LIBSSH2_SESSION*,
void *,
const char *,
size_t);
LIBSSH2_API int libssh2_trace_sethandler(LIBSSH2_SESSION *session,
void *context,
libssh2_trace_handler_func callback);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* !RC_INVOKED */
#endif /* LIBSSH2_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/include/libssh2_sftp.h | /* Copyright (c) 2004-2008, Sara Golemon <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#ifndef LIBSSH2_SFTP_H
#define LIBSSH2_SFTP_H 1
#include "libssh2.h"
#ifndef WIN32
#include <unistd.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* Note: Version 6 was documented at the time of writing
* However it was marked as "DO NOT IMPLEMENT" due to pending changes
*
* Let's start with Version 3 (The version found in OpenSSH) and go from there
*/
#define LIBSSH2_SFTP_VERSION 3
typedef struct _LIBSSH2_SFTP LIBSSH2_SFTP;
typedef struct _LIBSSH2_SFTP_HANDLE LIBSSH2_SFTP_HANDLE;
typedef struct _LIBSSH2_SFTP_ATTRIBUTES LIBSSH2_SFTP_ATTRIBUTES;
typedef struct _LIBSSH2_SFTP_STATVFS LIBSSH2_SFTP_STATVFS;
/* Flags for open_ex() */
#define LIBSSH2_SFTP_OPENFILE 0
#define LIBSSH2_SFTP_OPENDIR 1
/* Flags for rename_ex() */
#define LIBSSH2_SFTP_RENAME_OVERWRITE 0x00000001
#define LIBSSH2_SFTP_RENAME_ATOMIC 0x00000002
#define LIBSSH2_SFTP_RENAME_NATIVE 0x00000004
/* Flags for stat_ex() */
#define LIBSSH2_SFTP_STAT 0
#define LIBSSH2_SFTP_LSTAT 1
#define LIBSSH2_SFTP_SETSTAT 2
/* Flags for symlink_ex() */
#define LIBSSH2_SFTP_SYMLINK 0
#define LIBSSH2_SFTP_READLINK 1
#define LIBSSH2_SFTP_REALPATH 2
/* Flags for sftp_mkdir() */
#define LIBSSH2_SFTP_DEFAULT_MODE -1
/* SFTP attribute flag bits */
#define LIBSSH2_SFTP_ATTR_SIZE 0x00000001
#define LIBSSH2_SFTP_ATTR_UIDGID 0x00000002
#define LIBSSH2_SFTP_ATTR_PERMISSIONS 0x00000004
#define LIBSSH2_SFTP_ATTR_ACMODTIME 0x00000008
#define LIBSSH2_SFTP_ATTR_EXTENDED 0x80000000
/* SFTP statvfs flag bits */
#define LIBSSH2_SFTP_ST_RDONLY 0x00000001
#define LIBSSH2_SFTP_ST_NOSUID 0x00000002
struct _LIBSSH2_SFTP_ATTRIBUTES {
/* If flags & ATTR_* bit is set, then the value in this struct will be
* meaningful Otherwise it should be ignored
*/
unsigned long flags;
libssh2_uint64_t filesize;
unsigned long uid, gid;
unsigned long permissions;
unsigned long atime, mtime;
};
struct _LIBSSH2_SFTP_STATVFS {
libssh2_uint64_t f_bsize; /* file system block size */
libssh2_uint64_t f_frsize; /* fragment size */
libssh2_uint64_t f_blocks; /* size of fs in f_frsize units */
libssh2_uint64_t f_bfree; /* # free blocks */
libssh2_uint64_t f_bavail; /* # free blocks for non-root */
libssh2_uint64_t f_files; /* # inodes */
libssh2_uint64_t f_ffree; /* # free inodes */
libssh2_uint64_t f_favail; /* # free inodes for non-root */
libssh2_uint64_t f_fsid; /* file system ID */
libssh2_uint64_t f_flag; /* mount flags */
libssh2_uint64_t f_namemax; /* maximum filename length */
};
/* SFTP filetypes */
#define LIBSSH2_SFTP_TYPE_REGULAR 1
#define LIBSSH2_SFTP_TYPE_DIRECTORY 2
#define LIBSSH2_SFTP_TYPE_SYMLINK 3
#define LIBSSH2_SFTP_TYPE_SPECIAL 4
#define LIBSSH2_SFTP_TYPE_UNKNOWN 5
#define LIBSSH2_SFTP_TYPE_SOCKET 6
#define LIBSSH2_SFTP_TYPE_CHAR_DEVICE 7
#define LIBSSH2_SFTP_TYPE_BLOCK_DEVICE 8
#define LIBSSH2_SFTP_TYPE_FIFO 9
/*
* Reproduce the POSIX file modes here for systems that are not POSIX
* compliant.
*
* These is used in "permissions" of "struct _LIBSSH2_SFTP_ATTRIBUTES"
*/
/* File type */
#define LIBSSH2_SFTP_S_IFMT 0170000 /* type of file mask */
#define LIBSSH2_SFTP_S_IFIFO 0010000 /* named pipe (fifo) */
#define LIBSSH2_SFTP_S_IFCHR 0020000 /* character special */
#define LIBSSH2_SFTP_S_IFDIR 0040000 /* directory */
#define LIBSSH2_SFTP_S_IFBLK 0060000 /* block special */
#define LIBSSH2_SFTP_S_IFREG 0100000 /* regular */
#define LIBSSH2_SFTP_S_IFLNK 0120000 /* symbolic link */
#define LIBSSH2_SFTP_S_IFSOCK 0140000 /* socket */
/* File mode */
/* Read, write, execute/search by owner */
#define LIBSSH2_SFTP_S_IRWXU 0000700 /* RWX mask for owner */
#define LIBSSH2_SFTP_S_IRUSR 0000400 /* R for owner */
#define LIBSSH2_SFTP_S_IWUSR 0000200 /* W for owner */
#define LIBSSH2_SFTP_S_IXUSR 0000100 /* X for owner */
/* Read, write, execute/search by group */
#define LIBSSH2_SFTP_S_IRWXG 0000070 /* RWX mask for group */
#define LIBSSH2_SFTP_S_IRGRP 0000040 /* R for group */
#define LIBSSH2_SFTP_S_IWGRP 0000020 /* W for group */
#define LIBSSH2_SFTP_S_IXGRP 0000010 /* X for group */
/* Read, write, execute/search by others */
#define LIBSSH2_SFTP_S_IRWXO 0000007 /* RWX mask for other */
#define LIBSSH2_SFTP_S_IROTH 0000004 /* R for other */
#define LIBSSH2_SFTP_S_IWOTH 0000002 /* W for other */
#define LIBSSH2_SFTP_S_IXOTH 0000001 /* X for other */
/* macros to check for specific file types, added in 1.2.5 */
#define LIBSSH2_SFTP_S_ISLNK(m) \
(((m) & LIBSSH2_SFTP_S_IFMT) == LIBSSH2_SFTP_S_IFLNK)
#define LIBSSH2_SFTP_S_ISREG(m) \
(((m) & LIBSSH2_SFTP_S_IFMT) == LIBSSH2_SFTP_S_IFREG)
#define LIBSSH2_SFTP_S_ISDIR(m) \
(((m) & LIBSSH2_SFTP_S_IFMT) == LIBSSH2_SFTP_S_IFDIR)
#define LIBSSH2_SFTP_S_ISCHR(m) \
(((m) & LIBSSH2_SFTP_S_IFMT) == LIBSSH2_SFTP_S_IFCHR)
#define LIBSSH2_SFTP_S_ISBLK(m) \
(((m) & LIBSSH2_SFTP_S_IFMT) == LIBSSH2_SFTP_S_IFBLK)
#define LIBSSH2_SFTP_S_ISFIFO(m) \
(((m) & LIBSSH2_SFTP_S_IFMT) == LIBSSH2_SFTP_S_IFIFO)
#define LIBSSH2_SFTP_S_ISSOCK(m) \
(((m) & LIBSSH2_SFTP_S_IFMT) == LIBSSH2_SFTP_S_IFSOCK)
/* SFTP File Transfer Flags -- (e.g. flags parameter to sftp_open())
* Danger will robinson... APPEND doesn't have any effect on OpenSSH servers */
#define LIBSSH2_FXF_READ 0x00000001
#define LIBSSH2_FXF_WRITE 0x00000002
#define LIBSSH2_FXF_APPEND 0x00000004
#define LIBSSH2_FXF_CREAT 0x00000008
#define LIBSSH2_FXF_TRUNC 0x00000010
#define LIBSSH2_FXF_EXCL 0x00000020
/* SFTP Status Codes (returned by libssh2_sftp_last_error() ) */
#define LIBSSH2_FX_OK 0UL
#define LIBSSH2_FX_EOF 1UL
#define LIBSSH2_FX_NO_SUCH_FILE 2UL
#define LIBSSH2_FX_PERMISSION_DENIED 3UL
#define LIBSSH2_FX_FAILURE 4UL
#define LIBSSH2_FX_BAD_MESSAGE 5UL
#define LIBSSH2_FX_NO_CONNECTION 6UL
#define LIBSSH2_FX_CONNECTION_LOST 7UL
#define LIBSSH2_FX_OP_UNSUPPORTED 8UL
#define LIBSSH2_FX_INVALID_HANDLE 9UL
#define LIBSSH2_FX_NO_SUCH_PATH 10UL
#define LIBSSH2_FX_FILE_ALREADY_EXISTS 11UL
#define LIBSSH2_FX_WRITE_PROTECT 12UL
#define LIBSSH2_FX_NO_MEDIA 13UL
#define LIBSSH2_FX_NO_SPACE_ON_FILESYSTEM 14UL
#define LIBSSH2_FX_QUOTA_EXCEEDED 15UL
#define LIBSSH2_FX_UNKNOWN_PRINCIPLE 16UL /* Initial mis-spelling */
#define LIBSSH2_FX_UNKNOWN_PRINCIPAL 16UL
#define LIBSSH2_FX_LOCK_CONFlICT 17UL /* Initial mis-spelling */
#define LIBSSH2_FX_LOCK_CONFLICT 17UL
#define LIBSSH2_FX_DIR_NOT_EMPTY 18UL
#define LIBSSH2_FX_NOT_A_DIRECTORY 19UL
#define LIBSSH2_FX_INVALID_FILENAME 20UL
#define LIBSSH2_FX_LINK_LOOP 21UL
/* Returned by any function that would block during a read/write operation */
#define LIBSSH2SFTP_EAGAIN LIBSSH2_ERROR_EAGAIN
/* SFTP API */
LIBSSH2_API LIBSSH2_SFTP *libssh2_sftp_init(LIBSSH2_SESSION *session);
LIBSSH2_API int libssh2_sftp_shutdown(LIBSSH2_SFTP *sftp);
LIBSSH2_API unsigned long libssh2_sftp_last_error(LIBSSH2_SFTP *sftp);
LIBSSH2_API LIBSSH2_CHANNEL *libssh2_sftp_get_channel(LIBSSH2_SFTP *sftp);
/* File / Directory Ops */
LIBSSH2_API LIBSSH2_SFTP_HANDLE *
libssh2_sftp_open_ex(LIBSSH2_SFTP *sftp,
const char *filename,
unsigned int filename_len,
unsigned long flags,
long mode, int open_type);
#define libssh2_sftp_open(sftp, filename, flags, mode) \
libssh2_sftp_open_ex((sftp), (filename), strlen(filename), (flags), \
(mode), LIBSSH2_SFTP_OPENFILE)
#define libssh2_sftp_opendir(sftp, path) \
libssh2_sftp_open_ex((sftp), (path), strlen(path), 0, 0, \
LIBSSH2_SFTP_OPENDIR)
LIBSSH2_API ssize_t libssh2_sftp_read(LIBSSH2_SFTP_HANDLE *handle,
char *buffer, size_t buffer_maxlen);
LIBSSH2_API int libssh2_sftp_readdir_ex(LIBSSH2_SFTP_HANDLE *handle, \
char *buffer, size_t buffer_maxlen,
char *longentry,
size_t longentry_maxlen,
LIBSSH2_SFTP_ATTRIBUTES *attrs);
#define libssh2_sftp_readdir(handle, buffer, buffer_maxlen, attrs) \
libssh2_sftp_readdir_ex((handle), (buffer), (buffer_maxlen), NULL, 0, \
(attrs))
LIBSSH2_API ssize_t libssh2_sftp_write(LIBSSH2_SFTP_HANDLE *handle,
const char *buffer, size_t count);
LIBSSH2_API int libssh2_sftp_fsync(LIBSSH2_SFTP_HANDLE *handle);
LIBSSH2_API int libssh2_sftp_close_handle(LIBSSH2_SFTP_HANDLE *handle);
#define libssh2_sftp_close(handle) libssh2_sftp_close_handle(handle)
#define libssh2_sftp_closedir(handle) libssh2_sftp_close_handle(handle)
LIBSSH2_API void libssh2_sftp_seek(LIBSSH2_SFTP_HANDLE *handle, size_t offset);
LIBSSH2_API void libssh2_sftp_seek64(LIBSSH2_SFTP_HANDLE *handle,
libssh2_uint64_t offset);
#define libssh2_sftp_rewind(handle) libssh2_sftp_seek64((handle), 0)
LIBSSH2_API size_t libssh2_sftp_tell(LIBSSH2_SFTP_HANDLE *handle);
LIBSSH2_API libssh2_uint64_t libssh2_sftp_tell64(LIBSSH2_SFTP_HANDLE *handle);
LIBSSH2_API int libssh2_sftp_fstat_ex(LIBSSH2_SFTP_HANDLE *handle,
LIBSSH2_SFTP_ATTRIBUTES *attrs,
int setstat);
#define libssh2_sftp_fstat(handle, attrs) \
libssh2_sftp_fstat_ex((handle), (attrs), 0)
#define libssh2_sftp_fsetstat(handle, attrs) \
libssh2_sftp_fstat_ex((handle), (attrs), 1)
/* Miscellaneous Ops */
LIBSSH2_API int libssh2_sftp_rename_ex(LIBSSH2_SFTP *sftp,
const char *source_filename,
unsigned int srouce_filename_len,
const char *dest_filename,
unsigned int dest_filename_len,
long flags);
#define libssh2_sftp_rename(sftp, sourcefile, destfile) \
libssh2_sftp_rename_ex((sftp), (sourcefile), strlen(sourcefile), \
(destfile), strlen(destfile), \
LIBSSH2_SFTP_RENAME_OVERWRITE | \
LIBSSH2_SFTP_RENAME_ATOMIC | \
LIBSSH2_SFTP_RENAME_NATIVE)
LIBSSH2_API int libssh2_sftp_unlink_ex(LIBSSH2_SFTP *sftp,
const char *filename,
unsigned int filename_len);
#define libssh2_sftp_unlink(sftp, filename) \
libssh2_sftp_unlink_ex((sftp), (filename), strlen(filename))
LIBSSH2_API int libssh2_sftp_fstatvfs(LIBSSH2_SFTP_HANDLE *handle,
LIBSSH2_SFTP_STATVFS *st);
LIBSSH2_API int libssh2_sftp_statvfs(LIBSSH2_SFTP *sftp,
const char *path,
size_t path_len,
LIBSSH2_SFTP_STATVFS *st);
LIBSSH2_API int libssh2_sftp_mkdir_ex(LIBSSH2_SFTP *sftp,
const char *path,
unsigned int path_len, long mode);
#define libssh2_sftp_mkdir(sftp, path, mode) \
libssh2_sftp_mkdir_ex((sftp), (path), strlen(path), (mode))
LIBSSH2_API int libssh2_sftp_rmdir_ex(LIBSSH2_SFTP *sftp,
const char *path,
unsigned int path_len);
#define libssh2_sftp_rmdir(sftp, path) \
libssh2_sftp_rmdir_ex((sftp), (path), strlen(path))
LIBSSH2_API int libssh2_sftp_stat_ex(LIBSSH2_SFTP *sftp,
const char *path,
unsigned int path_len,
int stat_type,
LIBSSH2_SFTP_ATTRIBUTES *attrs);
#define libssh2_sftp_stat(sftp, path, attrs) \
libssh2_sftp_stat_ex((sftp), (path), strlen(path), LIBSSH2_SFTP_STAT, \
(attrs))
#define libssh2_sftp_lstat(sftp, path, attrs) \
libssh2_sftp_stat_ex((sftp), (path), strlen(path), LIBSSH2_SFTP_LSTAT, \
(attrs))
#define libssh2_sftp_setstat(sftp, path, attrs) \
libssh2_sftp_stat_ex((sftp), (path), strlen(path), LIBSSH2_SFTP_SETSTAT, \
(attrs))
LIBSSH2_API int libssh2_sftp_symlink_ex(LIBSSH2_SFTP *sftp,
const char *path,
unsigned int path_len,
char *target,
unsigned int target_len,
int link_type);
#define libssh2_sftp_symlink(sftp, orig, linkpath) \
libssh2_sftp_symlink_ex((sftp), (orig), strlen(orig), (linkpath), \
strlen(linkpath), LIBSSH2_SFTP_SYMLINK)
#define libssh2_sftp_readlink(sftp, path, target, maxlen) \
libssh2_sftp_symlink_ex((sftp), (path), strlen(path), (target), (maxlen), \
LIBSSH2_SFTP_READLINK)
#define libssh2_sftp_realpath(sftp, path, target, maxlen) \
libssh2_sftp_symlink_ex((sftp), (path), strlen(path), (target), (maxlen), \
LIBSSH2_SFTP_REALPATH)
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* LIBSSH2_SFTP_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/include/libssh2_publickey.h | /* Copyright (c) 2004-2006, Sara Golemon <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
/* Note: This include file is only needed for using the
* publickey SUBSYSTEM which is not the same as publickey
* authentication. For authentication you only need libssh2.h
*
* For more information on the publickey subsystem,
* refer to IETF draft: secsh-publickey
*/
#ifndef LIBSSH2_PUBLICKEY_H
#define LIBSSH2_PUBLICKEY_H 1
#include "libssh2.h"
typedef struct _LIBSSH2_PUBLICKEY LIBSSH2_PUBLICKEY;
typedef struct _libssh2_publickey_attribute {
const char *name;
unsigned long name_len;
const char *value;
unsigned long value_len;
char mandatory;
} libssh2_publickey_attribute;
typedef struct _libssh2_publickey_list {
unsigned char *packet; /* For freeing */
const unsigned char *name;
unsigned long name_len;
const unsigned char *blob;
unsigned long blob_len;
unsigned long num_attrs;
libssh2_publickey_attribute *attrs; /* free me */
} libssh2_publickey_list;
/* Generally use the first macro here, but if both name and value are string
literals, you can use _fast() to take advantage of preprocessing */
#define libssh2_publickey_attribute(name, value, mandatory) \
{ (name), strlen(name), (value), strlen(value), (mandatory) },
#define libssh2_publickey_attribute_fast(name, value, mandatory) \
{ (name), sizeof(name) - 1, (value), sizeof(value) - 1, (mandatory) },
#ifdef __cplusplus
extern "C" {
#endif
/* Publickey Subsystem */
LIBSSH2_API LIBSSH2_PUBLICKEY *
libssh2_publickey_init(LIBSSH2_SESSION *session);
LIBSSH2_API int
libssh2_publickey_add_ex(LIBSSH2_PUBLICKEY *pkey,
const unsigned char *name,
unsigned long name_len,
const unsigned char *blob,
unsigned long blob_len, char overwrite,
unsigned long num_attrs,
const libssh2_publickey_attribute attrs[]);
#define libssh2_publickey_add(pkey, name, blob, blob_len, overwrite, \
num_attrs, attrs) \
libssh2_publickey_add_ex((pkey), (name), strlen(name), (blob), (blob_len), \
(overwrite), (num_attrs), (attrs))
LIBSSH2_API int libssh2_publickey_remove_ex(LIBSSH2_PUBLICKEY *pkey,
const unsigned char *name,
unsigned long name_len,
const unsigned char *blob,
unsigned long blob_len);
#define libssh2_publickey_remove(pkey, name, blob, blob_len) \
libssh2_publickey_remove_ex((pkey), (name), strlen(name), (blob), (blob_len))
LIBSSH2_API int
libssh2_publickey_list_fetch(LIBSSH2_PUBLICKEY *pkey,
unsigned long *num_keys,
libssh2_publickey_list **pkey_list);
LIBSSH2_API void
libssh2_publickey_list_free(LIBSSH2_PUBLICKEY *pkey,
libssh2_publickey_list *pkey_list);
LIBSSH2_API int libssh2_publickey_shutdown(LIBSSH2_PUBLICKEY *pkey);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* ifndef: LIBSSH2_PUBLICKEY_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/scp.c | /*
* Sample showing how to do a simple SCP transfer.
*/
#include "libssh2_config.h"
#include <libssh2.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
LIBSSH2_CHANNEL *channel;
const char *username = "username";
const char *password = "password";
const char *scppath = "/tmp/TEST";
libssh2_struct_stat fileinfo;
int rc;
libssh2_struct_stat_size got = 0;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
scppath = argv[4];
}
rc = libssh2_init(0);
if(rc) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/* Ultra basic "connect to port 22 on localhost"
* Your code is responsible for creating the socket establishing the
* connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
rc = libssh2_session_handshake(session, sock);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(auth_pw) {
/* We could authenticate via password */
if(libssh2_userauth_password(session, username, password)) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
#define HOME_DIR "/home/username/"
if(libssh2_userauth_publickey_fromfile(session, username,
HOME_DIR ".ssh/id_rsa.pub",
HOME_DIR ".ssh/id_rsa",
password)) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
/* Request a file via SCP */
channel = libssh2_scp_recv2(session, scppath, &fileinfo);
if(!channel) {
fprintf(stderr, "Unable to open a session: %d\n",
libssh2_session_last_errno(session));
goto shutdown;
}
while(got < fileinfo.st_size) {
char mem[1024];
int amount = sizeof(mem);
if((fileinfo.st_size -got) < amount) {
amount = (int)(fileinfo.st_size -got);
}
rc = libssh2_channel_read(channel, mem, amount);
if(rc > 0) {
write(1, mem, rc);
}
else if(rc < 0) {
fprintf(stderr, "libssh2_channel_read() failed: %d\n", rc);
break;
}
got += rc;
}
libssh2_channel_free(channel);
channel = NULL;
shutdown:
libssh2_session_disconnect(session,
"Normal Shutdown, Thank you for playing");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/sftp_mkdir_nonblock.c | /*
* Sample showing how to do SFTP non-blocking mkdir.
*
* The sample code has default values for host name, user name, password
* and path to copy, but you can specify them on the command line like:
*
* "sftp 192.168.0.1 user password /tmp/sftp_write_nonblock.c"
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
const char *username = "username";
const char *password = "password";
const char *sftppath = "/tmp/sftp_mkdir_nonblock";
int rc;
LIBSSH2_SFTP *sftp_session;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
sftppath = argv[4];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/*
* The application code is responsible for creating the socket
* and establishing the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
rc = libssh2_session_handshake(session, sock);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(auth_pw) {
/* We could authenticate via password */
if(libssh2_userauth_password(session, username, password)) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
if(libssh2_userauth_publickey_fromfile(session, username,
"/home/username/.ssh/id_rsa.pub",
"/home/username/.ssh/id_rsa",
password)) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
fprintf(stderr, "libssh2_sftp_init()!\n");
sftp_session = libssh2_sftp_init(session);
if(!sftp_session) {
fprintf(stderr, "Unable to init SFTP session\n");
goto shutdown;
}
/* Since we have set non-blocking, tell libssh2 we are non-blocking */
libssh2_session_set_blocking(session, 0);
fprintf(stderr, "libssh2_sftp_mkdirnb()!\n");
/* Make a directory via SFTP */
while(libssh2_sftp_mkdir(sftp_session, sftppath,
LIBSSH2_SFTP_S_IRWXU|
LIBSSH2_SFTP_S_IRGRP|LIBSSH2_SFTP_S_IXGRP|
LIBSSH2_SFTP_S_IROTH|LIBSSH2_SFTP_S_IXOTH)
== LIBSSH2_ERROR_EAGAIN);
libssh2_sftp_shutdown(sftp_session);
shutdown:
libssh2_session_disconnect(session, "Normal Shutdown");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/ssh2.c | /*
* Sample showing how to do SSH2 connect.
*
* The sample code has default values for host name, user name, password
* and path to copy, but you can specify them on the command line like:
*
* "ssh2 host user password [-p|-i|-k]"
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINDOWS_H
# include <windows.h>
#endif
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
# ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
const char *keyfile1 = "~/.ssh/id_rsa.pub";
const char *keyfile2 = "~/.ssh/id_rsa";
const char *username = "username";
const char *password = "password";
static void kbd_callback(const char *name, int name_len,
const char *instruction, int instruction_len,
int num_prompts,
const LIBSSH2_USERAUTH_KBDINT_PROMPT *prompts,
LIBSSH2_USERAUTH_KBDINT_RESPONSE *responses,
void **abstract)
{
(void)name;
(void)name_len;
(void)instruction;
(void)instruction_len;
if(num_prompts == 1) {
responses[0].text = strdup(password);
responses[0].length = strlen(password);
}
(void)prompts;
(void)abstract;
} /* kbd_callback */
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int rc, sock, i, auth_pw = 0;
struct sockaddr_in sin;
const char *fingerprint;
char *userauthlist;
LIBSSH2_SESSION *session;
LIBSSH2_CHANNEL *channel;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/* Ultra basic "connect to port 22 on localhost". Your code is
* responsible for creating the socket establishing the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance and start it up. This will trade welcome
* banners, exchange keys, and setup crypto, compression, and MAC layers
*/
session = libssh2_session_init();
if(libssh2_session_handshake(session, sock)) {
fprintf(stderr, "Failure establishing SSH session\n");
return -1;
}
/* At this point we havn't authenticated. The first thing to do is check
* the hostkey's fingerprint against our known hosts Your app may have it
* hard coded, may go to a file, may present it to the user, that's your
* call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
/* check what authentication methods are available */
userauthlist = libssh2_userauth_list(session, username, strlen(username));
fprintf(stderr, "Authentication methods: %s\n", userauthlist);
if(strstr(userauthlist, "password") != NULL) {
auth_pw |= 1;
}
if(strstr(userauthlist, "keyboard-interactive") != NULL) {
auth_pw |= 2;
}
if(strstr(userauthlist, "publickey") != NULL) {
auth_pw |= 4;
}
/* if we got an 4. argument we set this option if supported */
if(argc > 4) {
if((auth_pw & 1) && !strcasecmp(argv[4], "-p")) {
auth_pw = 1;
}
if((auth_pw & 2) && !strcasecmp(argv[4], "-i")) {
auth_pw = 2;
}
if((auth_pw & 4) && !strcasecmp(argv[4], "-k")) {
auth_pw = 4;
}
}
if(auth_pw & 1) {
/* We could authenticate via password */
if(libssh2_userauth_password(session, username, password)) {
fprintf(stderr, "\tAuthentication by password failed!\n");
goto shutdown;
}
else {
fprintf(stderr, "\tAuthentication by password succeeded.\n");
}
}
else if(auth_pw & 2) {
/* Or via keyboard-interactive */
if(libssh2_userauth_keyboard_interactive(session, username,
&kbd_callback) ) {
fprintf(stderr,
"\tAuthentication by keyboard-interactive failed!\n");
goto shutdown;
}
else {
fprintf(stderr,
"\tAuthentication by keyboard-interactive succeeded.\n");
}
}
else if(auth_pw & 4) {
/* Or by public key */
if(libssh2_userauth_publickey_fromfile(session, username, keyfile1,
keyfile2, password)) {
fprintf(stderr, "\tAuthentication by public key failed!\n");
goto shutdown;
}
else {
fprintf(stderr, "\tAuthentication by public key succeeded.\n");
}
}
else {
fprintf(stderr, "No supported authentication methods found!\n");
goto shutdown;
}
/* Request a shell */
channel = libssh2_channel_open_session(session);
if(!channel) {
fprintf(stderr, "Unable to open a session\n");
goto shutdown;
}
/* Some environment variables may be set,
* It's up to the server which ones it'll allow though
*/
libssh2_channel_setenv(channel, "FOO", "bar");
/* Request a terminal with 'vanilla' terminal emulation
* See /etc/termcap for more options
*/
if(libssh2_channel_request_pty(channel, "vanilla")) {
fprintf(stderr, "Failed requesting pty\n");
goto skip_shell;
}
/* Open a SHELL on that pty */
if(libssh2_channel_shell(channel)) {
fprintf(stderr, "Unable to request shell on allocated pty\n");
goto shutdown;
}
/* At this point the shell can be interacted with using
* libssh2_channel_read()
* libssh2_channel_read_stderr()
* libssh2_channel_write()
* libssh2_channel_write_stderr()
*
* Blocking mode may be (en|dis)abled with: libssh2_channel_set_blocking()
* If the server send EOF, libssh2_channel_eof() will return non-0
* To send EOF to the server use: libssh2_channel_send_eof()
* A channel can be closed with: libssh2_channel_close()
* A channel can be freed with: libssh2_channel_free()
*/
skip_shell:
if(channel) {
libssh2_channel_free(channel);
channel = NULL;
}
/* Other channel types are supported via:
* libssh2_scp_send()
* libssh2_scp_recv2()
* libssh2_channel_direct_tcpip()
*/
shutdown:
libssh2_session_disconnect(session,
"Normal Shutdown, Thank you for playing");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done!\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/scp_write.c | /*
* Sample showing how to do an SCP upload.
*/
#include "libssh2_config.h"
#include <libssh2.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session = NULL;
LIBSSH2_CHANNEL *channel;
const char *username = "username";
const char *password = "password";
const char *loclfile = "scp_write.c";
const char *scppath = "/tmp/TEST";
FILE *local;
int rc;
char mem[1024];
size_t nread;
char *ptr;
struct stat fileinfo;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
loclfile = argv[4];
}
if(argc > 5) {
scppath = argv[5];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
local = fopen(loclfile, "rb");
if(!local) {
fprintf(stderr, "Can't open local file %s\n", loclfile);
return -1;
}
stat(loclfile, &fileinfo);
/* Ultra basic "connect to port 22 on localhost"
* Your code is responsible for creating the socket establishing the
* connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
if(-1 == sock) {
fprintf(stderr, "failed to create socket!\n");
return -1;
}
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
rc = libssh2_session_handshake(session, sock);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(auth_pw) {
/* We could authenticate via password */
if(libssh2_userauth_password(session, username, password)) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
#define HOME "/home/username/"
if(libssh2_userauth_publickey_fromfile(session, username,
HOME ".ssh/id_rsa.pub",
HOME ".ssh/id_rsa",
password)) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
/* Send a file via scp. The mode parameter must only have permissions! */
channel = libssh2_scp_send(session, scppath, fileinfo.st_mode & 0777,
(unsigned long)fileinfo.st_size);
if(!channel) {
char *errmsg;
int errlen;
int err = libssh2_session_last_error(session, &errmsg, &errlen, 0);
fprintf(stderr, "Unable to open a session: (%d) %s\n", err, errmsg);
goto shutdown;
}
fprintf(stderr, "SCP session waiting to send file\n");
do {
nread = fread(mem, 1, sizeof(mem), local);
if(nread <= 0) {
/* end of file */
break;
}
ptr = mem;
do {
/* write the same data over and over, until error or completion */
rc = libssh2_channel_write(channel, ptr, nread);
if(rc < 0) {
fprintf(stderr, "ERROR %d\n", rc);
break;
}
else {
/* rc indicates how many bytes were written this time */
ptr += rc;
nread -= rc;
}
} while(nread);
} while(1);
fprintf(stderr, "Sending EOF\n");
libssh2_channel_send_eof(channel);
fprintf(stderr, "Waiting for EOF\n");
libssh2_channel_wait_eof(channel);
fprintf(stderr, "Waiting for channel to close\n");
libssh2_channel_wait_closed(channel);
libssh2_channel_free(channel);
channel = NULL;
shutdown:
if(session) {
libssh2_session_disconnect(session, "Normal Shutdown");
libssh2_session_free(session);
}
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
if(local)
fclose(local);
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/sftp_nonblock.c | /*
* Sample showing how to do SFTP non-blocking transfers.
*
* The sample code has default values for host name, user name, password
* and path to copy, but you can specify them on the command line like:
*
* "sftp_nonblock 192.168.0.1 user password /tmp/secrets"
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#ifdef HAVE_GETTIMEOFDAY
/* diff in ms */
static long tvdiff(struct timeval newer, struct timeval older)
{
return (newer.tv_sec-older.tv_sec)*1000+
(newer.tv_usec-older.tv_usec)/1000;
}
#endif
static int waitsocket(int socket_fd, LIBSSH2_SESSION *session)
{
struct timeval timeout;
int rc;
fd_set fd;
fd_set *writefd = NULL;
fd_set *readfd = NULL;
int dir;
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fd);
FD_SET(socket_fd, &fd);
/* now make sure we wait in the correct direction */
dir = libssh2_session_block_directions(session);
if(dir & LIBSSH2_SESSION_BLOCK_INBOUND)
readfd = &fd;
if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND)
writefd = &fd;
rc = select(socket_fd + 1, readfd, writefd, NULL, &timeout);
return rc;
}
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
const char *username = "username";
const char *password = "password";
const char *sftppath = "/tmp/TEST";
#ifdef HAVE_GETTIMEOFDAY
struct timeval start;
struct timeval end;
long time_ms;
#endif
int rc;
int total = 0;
int spin = 0;
LIBSSH2_SFTP *sftp_session;
LIBSSH2_SFTP_HANDLE *sftp_handle;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
sftppath = argv[4];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/*
* The application code is responsible for creating the socket
* and establishing the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance */
session = libssh2_session_init();
if(!session)
return -1;
/* Since we have set non-blocking, tell libssh2 we are non-blocking */
libssh2_session_set_blocking(session, 0);
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&start, NULL);
#endif
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
while((rc = libssh2_session_handshake(session, sock)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(auth_pw) {
/* We could authenticate via password */
while((rc = libssh2_userauth_password(session, username, password))
== LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
while((rc =
libssh2_userauth_publickey_fromfile(session, username,
"/home/username/"
".ssh/id_rsa.pub",
"/home/username/"
".ssh/id_rsa",
password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
#if 0
libssh2_trace(session, LIBSSH2_TRACE_CONN);
#endif
fprintf(stderr, "libssh2_sftp_init()!\n");
do {
sftp_session = libssh2_sftp_init(session);
if(!sftp_session) {
if(libssh2_session_last_errno(session) ==
LIBSSH2_ERROR_EAGAIN) {
fprintf(stderr, "non-blocking init\n");
waitsocket(sock, session); /* now we wait */
}
else {
fprintf(stderr, "Unable to init SFTP session\n");
goto shutdown;
}
}
} while(!sftp_session);
fprintf(stderr, "libssh2_sftp_open()!\n");
/* Request a file via SFTP */
do {
sftp_handle = libssh2_sftp_open(sftp_session, sftppath,
LIBSSH2_FXF_READ, 0);
if(!sftp_handle) {
if(libssh2_session_last_errno(session) != LIBSSH2_ERROR_EAGAIN) {
fprintf(stderr, "Unable to open file with SFTP\n");
goto shutdown;
}
else {
fprintf(stderr, "non-blocking open\n");
waitsocket(sock, session); /* now we wait */
}
}
} while(!sftp_handle);
fprintf(stderr, "libssh2_sftp_open() is done, now receive data!\n");
do {
char mem[1024*24];
/* loop until we fail */
while((rc = libssh2_sftp_read(sftp_handle, mem,
sizeof(mem))) == LIBSSH2_ERROR_EAGAIN) {
spin++;
waitsocket(sock, session); /* now we wait */
}
if(rc > 0) {
total += rc;
write(1, mem, rc);
}
else {
break;
}
} while(1);
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&end, NULL);
time_ms = tvdiff(end, start);
fprintf(stderr, "Got %d bytes in %ld ms = %.1f bytes/sec spin: %d\n",
total,
time_ms, total/(time_ms/1000.0), spin);
#else
fprintf(stderr, "Got %d bytes spin: %d\n", total, spin);
#endif
libssh2_sftp_close(sftp_handle);
libssh2_sftp_shutdown(sftp_session);
shutdown:
fprintf(stderr, "libssh2_session_disconnect\n");
while(libssh2_session_disconnect(session,
"Normal Shutdown, Thank you") ==
LIBSSH2_ERROR_EAGAIN);
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/ssh2_exec.c | /*
* Sample showing how to use libssh2 to execute a command remotely.
*
* The sample code has fixed values for host name, user name, password
* and command to run.
*
* Run it like this:
*
* $ ./ssh2_exec 127.0.0.1 user password "uptime"
*
*/
#include "libssh2_config.h"
#include <libssh2.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <sys/types.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
static int waitsocket(int socket_fd, LIBSSH2_SESSION *session)
{
struct timeval timeout;
int rc;
fd_set fd;
fd_set *writefd = NULL;
fd_set *readfd = NULL;
int dir;
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fd);
FD_SET(socket_fd, &fd);
/* now make sure we wait in the correct direction */
dir = libssh2_session_block_directions(session);
if(dir & LIBSSH2_SESSION_BLOCK_INBOUND)
readfd = &fd;
if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND)
writefd = &fd;
rc = select(socket_fd + 1, readfd, writefd, NULL, &timeout);
return rc;
}
int main(int argc, char *argv[])
{
const char *hostname = "127.0.0.1";
const char *commandline = "uptime";
const char *username = "user";
const char *password = "password";
unsigned long hostaddr;
int sock;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
LIBSSH2_CHANNEL *channel;
int rc;
int exitcode;
char *exitsignal = (char *)"none";
int bytecount = 0;
size_t len;
LIBSSH2_KNOWNHOSTS *nh;
int type;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1)
/* must be ip address only */
hostname = argv[1];
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
commandline = argv[4];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
hostaddr = inet_addr(hostname);
/* Ultra basic "connect to port 22 on localhost"
* Your code is responsible for creating the socket establishing the
* connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance */
session = libssh2_session_init();
if(!session)
return -1;
/* tell libssh2 we want it all done non-blocking */
libssh2_session_set_blocking(session, 0);
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
while((rc = libssh2_session_handshake(session, sock)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
nh = libssh2_knownhost_init(session);
if(!nh) {
/* eeek, do cleanup here */
return 2;
}
/* read all hosts from here */
libssh2_knownhost_readfile(nh, "known_hosts",
LIBSSH2_KNOWNHOST_FILE_OPENSSH);
/* store all known hosts to here */
libssh2_knownhost_writefile(nh, "dumpfile",
LIBSSH2_KNOWNHOST_FILE_OPENSSH);
fingerprint = libssh2_session_hostkey(session, &len, &type);
if(fingerprint) {
struct libssh2_knownhost *host;
#if LIBSSH2_VERSION_NUM >= 0x010206
/* introduced in 1.2.6 */
int check = libssh2_knownhost_checkp(nh, hostname, 22,
fingerprint, len,
LIBSSH2_KNOWNHOST_TYPE_PLAIN|
LIBSSH2_KNOWNHOST_KEYENC_RAW,
&host);
#else
/* 1.2.5 or older */
int check = libssh2_knownhost_check(nh, hostname,
fingerprint, len,
LIBSSH2_KNOWNHOST_TYPE_PLAIN|
LIBSSH2_KNOWNHOST_KEYENC_RAW,
&host);
#endif
fprintf(stderr, "Host check: %d, key: %s\n", check,
(check <= LIBSSH2_KNOWNHOST_CHECK_MISMATCH)?
host->key:"<none>");
/*****
* At this point, we could verify that 'check' tells us the key is
* fine or bail out.
*****/
}
else {
/* eeek, do cleanup here */
return 3;
}
libssh2_knownhost_free(nh);
if(strlen(password) != 0) {
/* We could authenticate via password */
while((rc = libssh2_userauth_password(session, username, password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
while((rc = libssh2_userauth_publickey_fromfile(session, username,
"/home/user/"
".ssh/id_rsa.pub",
"/home/user/"
".ssh/id_rsa",
password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
#if 0
libssh2_trace(session, ~0);
#endif
/* Exec non-blocking on the remove host */
while((channel = libssh2_channel_open_session(session)) == NULL &&
libssh2_session_last_error(session, NULL, NULL, 0) ==
LIBSSH2_ERROR_EAGAIN) {
waitsocket(sock, session);
}
if(channel == NULL) {
fprintf(stderr, "Error\n");
exit(1);
}
while((rc = libssh2_channel_exec(channel, commandline)) ==
LIBSSH2_ERROR_EAGAIN) {
waitsocket(sock, session);
}
if(rc != 0) {
fprintf(stderr, "Error\n");
exit(1);
}
for(;;) {
/* loop until we block */
int rc;
do {
char buffer[0x4000];
rc = libssh2_channel_read(channel, buffer, sizeof(buffer) );
if(rc > 0) {
int i;
bytecount += rc;
fprintf(stderr, "We read:\n");
for(i = 0; i < rc; ++i)
fputc(buffer[i], stderr);
fprintf(stderr, "\n");
}
else {
if(rc != LIBSSH2_ERROR_EAGAIN)
/* no need to output this for the EAGAIN case */
fprintf(stderr, "libssh2_channel_read returned %d\n", rc);
}
}
while(rc > 0);
/* this is due to blocking that would occur otherwise so we loop on
this condition */
if(rc == LIBSSH2_ERROR_EAGAIN) {
waitsocket(sock, session);
}
else
break;
}
exitcode = 127;
while((rc = libssh2_channel_close(channel)) == LIBSSH2_ERROR_EAGAIN)
waitsocket(sock, session);
if(rc == 0) {
exitcode = libssh2_channel_get_exit_status(channel);
libssh2_channel_get_exit_signal(channel, &exitsignal,
NULL, NULL, NULL, NULL, NULL);
}
if(exitsignal)
fprintf(stderr, "\nGot signal: %s\n", exitsignal);
else
fprintf(stderr, "\nEXIT: %d bytecount: %d\n", exitcode, bytecount);
libssh2_channel_free(channel);
channel = NULL;
shutdown:
libssh2_session_disconnect(session,
"Normal Shutdown, Thank you for playing");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/sftp_append.c | /*
* Sample showing how to do SFTP append of a local file onto a remote one.
*
* The sample code has default values for host name, user name, password
* and path to copy, but you can specify them on the command line like:
*
* sftp_append 192.168.0.1 user password localfile /tmp/remotefile
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
const char *username = "username";
const char *password = "password";
const char *loclfile = "sftp_write.c";
const char *sftppath = "/tmp/TEST";
int rc;
FILE *local;
LIBSSH2_SFTP *sftp_session;
LIBSSH2_SFTP_HANDLE *sftp_handle;
LIBSSH2_SFTP_ATTRIBUTES attrs;
char mem[1024*100];
size_t nread;
char *ptr;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
loclfile = argv[4];
}
if(argc > 5) {
sftppath = argv[5];
}
rc = libssh2_init(0);
if(rc) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
local = fopen(loclfile, "rb");
if(!local) {
fprintf(stderr, "Can't open local file %s\n", loclfile);
return -1;
}
/*
* The application code is responsible for creating the socket
* and establishing the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* Since we have set non-blocking, tell libssh2 we are blocking */
libssh2_session_set_blocking(session, 1);
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
rc = libssh2_session_handshake(session, sock);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(auth_pw) {
/* We could authenticate via password */
if(libssh2_userauth_password(session, username, password)) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
#define HOME "/home/username/"
if(libssh2_userauth_publickey_fromfile(session, username,
HOME ".ssh/id_rsa.pub",
HOME ".ssh/id_rsa",
password)) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
fprintf(stderr, "libssh2_sftp_init()!\n");
sftp_session = libssh2_sftp_init(session);
if(!sftp_session) {
fprintf(stderr, "Unable to init SFTP session\n");
goto shutdown;
}
fprintf(stderr, "libssh2_sftp_open() for READ and WRITE!\n");
/* Request a file via SFTP */
sftp_handle =
libssh2_sftp_open(sftp_session, sftppath,
LIBSSH2_FXF_WRITE|LIBSSH2_FXF_READ,
LIBSSH2_SFTP_S_IRUSR|LIBSSH2_SFTP_S_IWUSR|
LIBSSH2_SFTP_S_IRGRP|LIBSSH2_SFTP_S_IROTH);
if(!sftp_handle) {
fprintf(stderr, "Unable to open file with SFTP\n");
goto shutdown;
}
if(libssh2_sftp_fstat_ex(sftp_handle, &attrs, 0) < 0) {
fprintf(stderr, "libssh2_sftp_fstat_ex failed\n");
goto shutdown;
}
else
libssh2_sftp_seek64(sftp_handle, attrs.filesize);
fprintf(stderr, "Did a seek to position %ld\n", (long) attrs.filesize);
fprintf(stderr, "libssh2_sftp_open() a handle for APPEND\n");
if(!sftp_handle) {
fprintf(stderr, "Unable to open file with SFTP\n");
goto shutdown;
}
fprintf(stderr, "libssh2_sftp_open() is done, now send data!\n");
do {
nread = fread(mem, 1, sizeof(mem), local);
if(nread <= 0) {
/* end of file */
break;
}
ptr = mem;
do {
/* write data in a loop until we block */
rc = libssh2_sftp_write(sftp_handle, ptr, nread);
if(rc < 0)
break;
ptr += rc;
nread -= rc;
} while(nread);
} while(rc > 0);
libssh2_sftp_close(sftp_handle);
libssh2_sftp_shutdown(sftp_session);
shutdown:
libssh2_session_disconnect(session,
"Normal Shutdown, Thank you for playing");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
if(local)
fclose(local);
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/ssh2_agent.c | /*
* Sample showing how to do SSH2 connect using ssh-agent.
*
* The sample code has default values for host name, user name:
*
* "ssh2_agent host user"
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINDOWS_H
# include <windows.h>
#endif
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
# ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
const char *username = "username";
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock = -1, i, rc;
struct sockaddr_in sin;
const char *fingerprint;
char *userauthlist;
LIBSSH2_SESSION *session = NULL;
LIBSSH2_CHANNEL *channel;
LIBSSH2_AGENT *agent = NULL;
struct libssh2_agent_publickey *identity, *prev_identity = NULL;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/* Ultra basic "connect to port 22 on localhost". Your code is
* responsible for creating the socket establishing the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
if(sock == -1) {
fprintf(stderr, "failed to create socket!\n");
rc = 1;
goto shutdown;
}
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
goto shutdown;
}
/* Create a session instance and start it up. This will trade welcome
* banners, exchange keys, and setup crypto, compression, and MAC layers
*/
session = libssh2_session_init();
if(libssh2_session_handshake(session, sock)) {
fprintf(stderr, "Failure establishing SSH session\n");
return 1;
}
/* At this point we havn't authenticated. The first thing to do is check
* the hostkey's fingerprint against our known hosts Your app may have it
* hard coded, may go to a file, may present it to the user, that's your
* call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
/* check what authentication methods are available */
userauthlist = libssh2_userauth_list(session, username, strlen(username));
fprintf(stderr, "Authentication methods: %s\n", userauthlist);
if(strstr(userauthlist, "publickey") == NULL) {
fprintf(stderr, "\"publickey\" authentication is not supported\n");
goto shutdown;
}
/* Connect to the ssh-agent */
agent = libssh2_agent_init(session);
if(!agent) {
fprintf(stderr, "Failure initializing ssh-agent support\n");
rc = 1;
goto shutdown;
}
if(libssh2_agent_connect(agent)) {
fprintf(stderr, "Failure connecting to ssh-agent\n");
rc = 1;
goto shutdown;
}
if(libssh2_agent_list_identities(agent)) {
fprintf(stderr, "Failure requesting identities to ssh-agent\n");
rc = 1;
goto shutdown;
}
while(1) {
rc = libssh2_agent_get_identity(agent, &identity, prev_identity);
if(rc == 1)
break;
if(rc < 0) {
fprintf(stderr,
"Failure obtaining identity from ssh-agent support\n");
rc = 1;
goto shutdown;
}
if(libssh2_agent_userauth(agent, username, identity)) {
fprintf(stderr, "\tAuthentication with username %s and "
"public key %s failed!\n",
username, identity->comment);
}
else {
fprintf(stderr, "\tAuthentication with username %s and "
"public key %s succeeded!\n",
username, identity->comment);
break;
}
prev_identity = identity;
}
if(rc) {
fprintf(stderr, "Couldn't continue authentication\n");
goto shutdown;
}
/* We're authenticated now. */
/* Request a shell */
channel = libssh2_channel_open_session(session);
if(!channel) {
fprintf(stderr, "Unable to open a session\n");
goto shutdown;
}
/* Some environment variables may be set,
* It's up to the server which ones it'll allow though
*/
libssh2_channel_setenv(channel, "FOO", "bar");
/* Request a terminal with 'vanilla' terminal emulation
* See /etc/termcap for more options
*/
if(libssh2_channel_request_pty(channel, "vanilla")) {
fprintf(stderr, "Failed requesting pty\n");
goto skip_shell;
}
/* Open a SHELL on that pty */
if(libssh2_channel_shell(channel)) {
fprintf(stderr, "Unable to request shell on allocated pty\n");
goto shutdown;
}
/* At this point the shell can be interacted with using
* libssh2_channel_read()
* libssh2_channel_read_stderr()
* libssh2_channel_write()
* libssh2_channel_write_stderr()
*
* Blocking mode may be (en|dis)abled with: libssh2_channel_set_blocking()
* If the server send EOF, libssh2_channel_eof() will return non-0
* To send EOF to the server use: libssh2_channel_send_eof()
* A channel can be closed with: libssh2_channel_close()
* A channel can be freed with: libssh2_channel_free()
*/
skip_shell:
if(channel) {
libssh2_channel_free(channel);
channel = NULL;
}
/* Other channel types are supported via:
* libssh2_scp_send()
* libssh2_scp_recv2()
* libssh2_channel_direct_tcpip()
*/
shutdown:
if(agent) {
libssh2_agent_disconnect(agent);
libssh2_agent_free(agent);
}
if(session) {
libssh2_session_disconnect(session,
"Normal Shutdown, Thank you for playing");
libssh2_session_free(session);
}
if(sock != -1) {
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
}
fprintf(stderr, "all done!\n");
libssh2_exit();
return rc;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/sftp_write_nonblock.c | /*
* Sample showing how to do SFTP non-blocking write transfers.
*
* The sample code has default values for host name, user name, password
* and path to copy, but you can specify them on the command line like:
*
* "sftp 192.168.0.1 user password thisfile /tmp/storehere"
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#include <time.h>
static int waitsocket(int socket_fd, LIBSSH2_SESSION *session)
{
struct timeval timeout;
int rc;
fd_set fd;
fd_set *writefd = NULL;
fd_set *readfd = NULL;
int dir;
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fd);
FD_SET(socket_fd, &fd);
/* now make sure we wait in the correct direction */
dir = libssh2_session_block_directions(session);
if(dir & LIBSSH2_SESSION_BLOCK_INBOUND)
readfd = &fd;
if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND)
writefd = &fd;
rc = select(socket_fd + 1, readfd, writefd, NULL, &timeout);
return rc;
}
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
const char *username = "username";
const char *password = "password";
const char *loclfile = "sftp_write_nonblock.c";
const char *sftppath = "/tmp/sftp_write_nonblock.c";
int rc;
FILE *local;
LIBSSH2_SFTP *sftp_session;
LIBSSH2_SFTP_HANDLE *sftp_handle;
char mem[1024 * 100];
size_t nread;
char *ptr;
time_t start;
long total = 0;
int duration;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
loclfile = argv[4];
}
if(argc > 5) {
sftppath = argv[5];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
local = fopen(loclfile, "rb");
if(!local) {
fprintf(stderr, "Can't open local file %s\n", loclfile);
return -1;
}
/*
* The application code is responsible for creating the socket
* and establishing the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* Since we have set non-blocking, tell libssh2 we are non-blocking */
libssh2_session_set_blocking(session, 0);
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
while((rc = libssh2_session_handshake(session, sock))
== LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do is
* check the hostkey's fingerprint against our known hosts Your app may
* have it hard coded, may go to a file, may present it to the user,
* that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(auth_pw) {
/* We could authenticate via password */
while((rc = libssh2_userauth_password(session, username, password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
const char *pubkey = "/home/username/.ssh/id_rsa.pub";
const char *privkey = "/home/username/.ssh/id_rsa";
while((rc = libssh2_userauth_publickey_fromfile(session, username,
pubkey, privkey,
password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
fprintf(stderr, "libssh2_sftp_init()!\n");
do {
sftp_session = libssh2_sftp_init(session);
if(!sftp_session &&
(libssh2_session_last_errno(session) != LIBSSH2_ERROR_EAGAIN)) {
fprintf(stderr, "Unable to init SFTP session\n");
goto shutdown;
}
} while(!sftp_session);
fprintf(stderr, "libssh2_sftp_open()!\n");
/* Request a file via SFTP */
do {
sftp_handle =
libssh2_sftp_open(sftp_session, sftppath,
LIBSSH2_FXF_WRITE|LIBSSH2_FXF_CREAT|
LIBSSH2_FXF_TRUNC,
LIBSSH2_SFTP_S_IRUSR|LIBSSH2_SFTP_S_IWUSR|
LIBSSH2_SFTP_S_IRGRP|LIBSSH2_SFTP_S_IROTH);
if(!sftp_handle &&
(libssh2_session_last_errno(session) != LIBSSH2_ERROR_EAGAIN)) {
fprintf(stderr, "Unable to open file with SFTP\n");
goto shutdown;
}
} while(!sftp_handle);
fprintf(stderr, "libssh2_sftp_open() is done, now send data!\n");
start = time(NULL);
do {
nread = fread(mem, 1, sizeof(mem), local);
if(nread <= 0) {
/* end of file */
break;
}
ptr = mem;
total += nread;
do {
/* write data in a loop until we block */
while((rc = libssh2_sftp_write(sftp_handle, ptr, nread)) ==
LIBSSH2_ERROR_EAGAIN) {
waitsocket(sock, session);
}
if(rc < 0)
break;
ptr += rc;
nread -= rc;
} while(nread);
} while(rc > 0);
duration = (int)(time(NULL)-start);
fprintf(stderr, "%ld bytes in %d seconds makes %.1f bytes/sec\n",
total, duration, total/(double)duration);
fclose(local);
libssh2_sftp_close(sftp_handle);
libssh2_sftp_shutdown(sftp_session);
shutdown:
while(libssh2_session_disconnect(session, "Normal Shutdown")
== LIBSSH2_ERROR_EAGAIN);
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/sftp_RW_nonblock.c | /*
* Sample showing how to do SFTP transfers in a non-blocking manner.
*
* It will first download a given source file, store it locally and then
* upload the file again to a given destination file.
*
* Using the SFTP server running on 127.0.0.1
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#define STORAGE "/tmp/sftp-storage" /* this is the local file name this
example uses to store the downloaded
file in */
static int waitsocket(int socket_fd, LIBSSH2_SESSION *session)
{
struct timeval timeout;
int rc;
fd_set fd;
fd_set *writefd = NULL;
fd_set *readfd = NULL;
int dir;
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fd);
FD_SET(socket_fd, &fd);
/* now make sure we wait in the correct direction */
dir = libssh2_session_block_directions(session);
if(dir & LIBSSH2_SESSION_BLOCK_INBOUND)
readfd = &fd;
if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND)
writefd = &fd;
rc = select(socket_fd + 1, readfd, writefd, NULL, &timeout);
return rc;
}
int main(int argc, char *argv[])
{
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
const char *username = "username";
const char *password = "password";
const char *sftppath = "/tmp/TEST"; /* source path */
const char *dest = "/tmp/TEST2"; /* destination path */
int rc;
LIBSSH2_SFTP *sftp_session;
LIBSSH2_SFTP_HANDLE *sftp_handle;
FILE *tempstorage;
char mem[1000];
struct timeval timeout;
fd_set fd;
fd_set fd2;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/* Ultra basic "connect to port 22 on localhost"
* The application is responsible for creating the socket establishing
* the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = htonl(0x7F000001);
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
rc = libssh2_session_handshake(session, sock);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
libssh2_session_set_blocking(session, 0);
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(argc > 1) {
username = argv[1];
}
if(argc > 2) {
password = argv[2];
}
if(argc > 3) {
sftppath = argv[3];
}
if(argc > 4) {
dest = argv[4];
}
tempstorage = fopen(STORAGE, "wb");
if(!tempstorage) {
fprintf(stderr, "Can't open temp storage file %s\n", STORAGE);
goto shutdown;
}
if(auth_pw) {
/* We could authenticate via password */
while((rc = libssh2_userauth_password(session, username, password))
== LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
while((rc =
libssh2_userauth_publickey_fromfile(session, username,
"/home/username/"
".ssh/id_rsa.pub",
"/home/username/"
".ssh/id_rsa",
password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
do {
sftp_session = libssh2_sftp_init(session);
if(!sftp_session) {
if(libssh2_session_last_errno(session) ==
LIBSSH2_ERROR_EAGAIN) {
fprintf(stderr, "non-blocking init\n");
waitsocket(sock, session); /* now we wait */
}
else {
fprintf(stderr, "Unable to init SFTP session\n");
goto shutdown;
}
}
} while(!sftp_session);
/* Request a file via SFTP */
do {
sftp_handle = libssh2_sftp_open(sftp_session, sftppath,
LIBSSH2_FXF_READ, 0);
if(!sftp_handle) {
if(libssh2_session_last_errno(session) != LIBSSH2_ERROR_EAGAIN) {
fprintf(stderr, "Unable to open file with SFTP\n");
goto shutdown;
}
else {
fprintf(stderr, "non-blocking open\n");
waitsocket(sock, session); /* now we wait */
}
}
} while(!sftp_handle);
fprintf(stderr, "libssh2_sftp_open() is done, now receive data!\n");
do {
do {
/* read in a loop until we block */
rc = libssh2_sftp_read(sftp_handle, mem, sizeof(mem));
fprintf(stderr, "libssh2_sftp_read returned %d\n",
rc);
if(rc > 0) {
/* write to stderr */
write(2, mem, rc);
/* write to temporary storage area */
fwrite(mem, rc, 1, tempstorage);
}
} while(rc > 0);
if(rc != LIBSSH2_ERROR_EAGAIN) {
/* error or end of file */
break;
}
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fd);
FD_ZERO(&fd2);
FD_SET(sock, &fd);
FD_SET(sock, &fd2);
/* wait for readable or writeable */
rc = select(sock + 1, &fd, &fd2, NULL, &timeout);
if(rc <= 0) {
/* negative is error
0 is timeout */
fprintf(stderr, "SFTP download timed out: %d\n", rc);
break;
}
} while(1);
libssh2_sftp_close(sftp_handle);
fclose(tempstorage);
tempstorage = fopen(STORAGE, "rb");
if(!tempstorage) {
/* weird, we can't read the file we just wrote to... */
fprintf(stderr, "can't open %s for reading\n", STORAGE);
goto shutdown;
}
/* we're done downloading, now reverse the process and upload the
temporarily stored data to the destination path */
sftp_handle =
libssh2_sftp_open(sftp_session, dest,
LIBSSH2_FXF_WRITE|LIBSSH2_FXF_CREAT,
LIBSSH2_SFTP_S_IRUSR|LIBSSH2_SFTP_S_IWUSR|
LIBSSH2_SFTP_S_IRGRP|LIBSSH2_SFTP_S_IROTH);
if(sftp_handle) {
size_t nread;
char *ptr;
do {
nread = fread(mem, 1, sizeof(mem), tempstorage);
if(nread <= 0) {
/* end of file */
break;
}
ptr = mem;
do {
/* write data in a loop until we block */
rc = libssh2_sftp_write(sftp_handle, ptr,
nread);
ptr += rc;
nread -= nread;
} while(rc >= 0);
if(rc != LIBSSH2_ERROR_EAGAIN) {
/* error or end of file */
break;
}
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fd);
FD_ZERO(&fd2);
FD_SET(sock, &fd);
FD_SET(sock, &fd2);
/* wait for readable or writeable */
rc = select(sock + 1, &fd, &fd2, NULL, &timeout);
if(rc <= 0) {
/* negative is error
0 is timeout */
fprintf(stderr, "SFTP upload timed out: %d\n",
rc);
break;
}
} while(1);
fprintf(stderr, "SFTP upload done!\n");
}
else {
fprintf(stderr, "SFTP failed to open destination path: %s\n",
dest);
}
libssh2_sftp_shutdown(sftp_session);
shutdown:
libssh2_session_disconnect(session, "Normal Shutdown");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
if(tempstorage)
fclose(tempstorage);
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/libssh2_config_cmake.h.in | /* Copyright (c) 2014 Alexander Lamaison <[email protected]>
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
/* Headers */
#cmakedefine HAVE_UNISTD_H
#cmakedefine HAVE_INTTYPES_H
#cmakedefine HAVE_STDLIB_H
#cmakedefine HAVE_SYS_SELECT_H
#cmakedefine HAVE_SYS_SOCKET_H
#cmakedefine HAVE_SYS_TIME_H
#cmakedefine HAVE_ARPA_INET_H
#cmakedefine HAVE_NETINET_IN_H
#cmakedefine HAVE_WINSOCK2_H
/* Functions */
#cmakedefine HAVE_STRCASECMP
#cmakedefine HAVE__STRICMP
#cmakedefine HAVE_SNPRINTF
#cmakedefine HAVE__SNPRINTF
/* Workaround for platforms without POSIX strcasecmp (e.g. Windows) */
#ifndef HAVE_STRCASECMP
# ifdef HAVE__STRICMP
# define strcasecmp _stricmp
# define HAVE_STRCASECMP
# endif
#endif
/* Symbols */
#cmakedefine HAVE___FUNC__
#cmakedefine HAVE___FUNCTION__
/* Workaround for platforms without C90 __func__ */
#ifndef HAVE___FUNC__
# ifdef HAVE___FUNCTION__
# define __func__ __FUNCTION__
# define HAVE___FUNC__
# endif
#endif
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/sftp.c | /*
* Sample showing how to do SFTP transfers.
*
* The sample code has default values for host name, user name, password
* and path to copy, but you can specify them on the command line like:
*
* "sftp 192.168.0.1 user password /tmp/secrets -p|-i|-k"
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
const char *keyfile1 = "~/.ssh/id_rsa.pub";
const char *keyfile2 = "~/.ssh/id_rsa";
const char *username = "username";
const char *password = "password";
const char *sftppath = "/tmp/TEST";
static void kbd_callback(const char *name, int name_len,
const char *instruction, int instruction_len,
int num_prompts,
const LIBSSH2_USERAUTH_KBDINT_PROMPT *prompts,
LIBSSH2_USERAUTH_KBDINT_RESPONSE *responses,
void **abstract)
{
int i;
size_t n;
char buf[1024];
(void)abstract;
fprintf(stderr, "Performing keyboard-interactive authentication.\n");
fprintf(stderr, "Authentication name: '");
fwrite(name, 1, name_len, stderr);
fprintf(stderr, "'\n");
fprintf(stderr, "Authentication instruction: '");
fwrite(instruction, 1, instruction_len, stderr);
fprintf(stderr, "'\n");
fprintf(stderr, "Number of prompts: %d\n\n", num_prompts);
for(i = 0; i < num_prompts; i++) {
fprintf(stderr, "Prompt %d from server: '", i);
fwrite(prompts[i].text, 1, prompts[i].length, stderr);
fprintf(stderr, "'\n");
fprintf(stderr, "Please type response: ");
fgets(buf, sizeof(buf), stdin);
n = strlen(buf);
while(n > 0 && strchr("\r\n", buf[n - 1]))
n--;
buf[n] = 0;
responses[i].text = strdup(buf);
responses[i].length = n;
fprintf(stderr, "Response %d from user is '", i);
fwrite(responses[i].text, 1, responses[i].length, stderr);
fprintf(stderr, "'\n\n");
}
fprintf(stderr,
"Done. Sending keyboard-interactive responses to server now.\n");
}
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 0;
struct sockaddr_in sin;
const char *fingerprint;
char *userauthlist;
LIBSSH2_SESSION *session;
int rc;
LIBSSH2_SFTP *sftp_session;
LIBSSH2_SFTP_HANDLE *sftp_handle;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
sftppath = argv[4];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/*
* The application code is responsible for creating the socket
* and establishing the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* Since we have set non-blocking, tell libssh2 we are blocking */
libssh2_session_set_blocking(session, 1);
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
rc = libssh2_session_handshake(session, sock);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
/* check what authentication methods are available */
userauthlist = libssh2_userauth_list(session, username, strlen(username));
fprintf(stderr, "Authentication methods: %s\n", userauthlist);
if(strstr(userauthlist, "password") != NULL) {
auth_pw |= 1;
}
if(strstr(userauthlist, "keyboard-interactive") != NULL) {
auth_pw |= 2;
}
if(strstr(userauthlist, "publickey") != NULL) {
auth_pw |= 4;
}
/* if we got an 4. argument we set this option if supported */
if(argc > 5) {
if((auth_pw & 1) && !strcasecmp(argv[5], "-p")) {
auth_pw = 1;
}
if((auth_pw & 2) && !strcasecmp(argv[5], "-i")) {
auth_pw = 2;
}
if((auth_pw & 4) && !strcasecmp(argv[5], "-k")) {
auth_pw = 4;
}
}
if(auth_pw & 1) {
/* We could authenticate via password */
if(libssh2_userauth_password(session, username, password)) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else if(auth_pw & 2) {
/* Or via keyboard-interactive */
if(libssh2_userauth_keyboard_interactive(session, username,
&kbd_callback) ) {
fprintf(stderr,
"\tAuthentication by keyboard-interactive failed!\n");
goto shutdown;
}
else {
fprintf(stderr,
"\tAuthentication by keyboard-interactive succeeded.\n");
}
}
else if(auth_pw & 4) {
/* Or by public key */
if(libssh2_userauth_publickey_fromfile(session, username, keyfile1,
keyfile2, password)) {
fprintf(stderr, "\tAuthentication by public key failed!\n");
goto shutdown;
}
else {
fprintf(stderr, "\tAuthentication by public key succeeded.\n");
}
}
else {
fprintf(stderr, "No supported authentication methods found!\n");
goto shutdown;
}
fprintf(stderr, "libssh2_sftp_init()!\n");
sftp_session = libssh2_sftp_init(session);
if(!sftp_session) {
fprintf(stderr, "Unable to init SFTP session\n");
goto shutdown;
}
fprintf(stderr, "libssh2_sftp_open()!\n");
/* Request a file via SFTP */
sftp_handle =
libssh2_sftp_open(sftp_session, sftppath, LIBSSH2_FXF_READ, 0);
if(!sftp_handle) {
fprintf(stderr, "Unable to open file with SFTP: %ld\n",
libssh2_sftp_last_error(sftp_session));
goto shutdown;
}
fprintf(stderr, "libssh2_sftp_open() is done, now receive data!\n");
do {
char mem[1024];
/* loop until we fail */
fprintf(stderr, "libssh2_sftp_read()!\n");
rc = libssh2_sftp_read(sftp_handle, mem, sizeof(mem));
if(rc > 0) {
write(1, mem, rc);
}
else {
break;
}
} while(1);
libssh2_sftp_close(sftp_handle);
libssh2_sftp_shutdown(sftp_session);
shutdown:
libssh2_session_disconnect(session, "Normal Shutdown");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/direct_tcpip.c | #include "libssh2_config.h"
#include <libssh2.h>
#ifdef WIN32
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/time.h>
#endif
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifndef INADDR_NONE
#define INADDR_NONE (in_addr_t)-1
#endif
const char *keyfile1 = "/home/username/.ssh/id_rsa.pub";
const char *keyfile2 = "/home/username/.ssh/id_rsa";
const char *username = "username";
const char *password = "";
const char *server_ip = "127.0.0.1";
const char *local_listenip = "127.0.0.1";
unsigned int local_listenport = 2222;
const char *remote_desthost = "localhost"; /* resolved by the server */
unsigned int remote_destport = 22;
enum {
AUTH_NONE = 0,
AUTH_PASSWORD,
AUTH_PUBLICKEY
};
int main(int argc, char *argv[])
{
int rc, i, auth = AUTH_NONE;
struct sockaddr_in sin;
socklen_t sinlen;
const char *fingerprint;
char *userauthlist;
LIBSSH2_SESSION *session;
LIBSSH2_CHANNEL *channel = NULL;
const char *shost;
unsigned int sport;
fd_set fds;
struct timeval tv;
ssize_t len, wr;
char buf[16384];
#ifdef WIN32
char sockopt;
SOCKET sock = INVALID_SOCKET;
SOCKET listensock = INVALID_SOCKET, forwardsock = INVALID_SOCKET;
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#else
int sockopt, sock = -1;
int listensock = -1, forwardsock = -1;
#endif
if(argc > 1)
server_ip = argv[1];
if(argc > 2)
username = argv[2];
if(argc > 3)
password = argv[3];
if(argc > 4)
local_listenip = argv[4];
if(argc > 5)
local_listenport = atoi(argv[5]);
if(argc > 6)
remote_desthost = argv[6];
if(argc > 7)
remote_destport = atoi(argv[7]);
rc = libssh2_init(0);
if(rc) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/* Connect to SSH server */
sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
#ifdef WIN32
if(sock == INVALID_SOCKET) {
fprintf(stderr, "failed to open socket!\n");
return -1;
}
#else
if(sock == -1) {
perror("socket");
return -1;
}
#endif
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = inet_addr(server_ip);
if(INADDR_NONE == sin.sin_addr.s_addr) {
perror("inet_addr");
return -1;
}
sin.sin_port = htons(22);
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance */
session = libssh2_session_init();
if(!session) {
fprintf(stderr, "Could not initialize SSH session!\n");
return -1;
}
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
rc = libssh2_session_handshake(session, sock);
if(rc) {
fprintf(stderr, "Error when starting up SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++)
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
fprintf(stderr, "\n");
/* check what authentication methods are available */
userauthlist = libssh2_userauth_list(session, username, strlen(username));
fprintf(stderr, "Authentication methods: %s\n", userauthlist);
if(strstr(userauthlist, "password"))
auth |= AUTH_PASSWORD;
if(strstr(userauthlist, "publickey"))
auth |= AUTH_PUBLICKEY;
/* check for options */
if(argc > 8) {
if((auth & AUTH_PASSWORD) && !strcasecmp(argv[8], "-p"))
auth = AUTH_PASSWORD;
if((auth & AUTH_PUBLICKEY) && !strcasecmp(argv[8], "-k"))
auth = AUTH_PUBLICKEY;
}
if(auth & AUTH_PASSWORD) {
if(libssh2_userauth_password(session, username, password)) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else if(auth & AUTH_PUBLICKEY) {
if(libssh2_userauth_publickey_fromfile(session, username, keyfile1,
keyfile2, password)) {
fprintf(stderr, "\tAuthentication by public key failed!\n");
goto shutdown;
}
fprintf(stderr, "\tAuthentication by public key succeeded.\n");
}
else {
fprintf(stderr, "No supported authentication methods found!\n");
goto shutdown;
}
listensock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
#ifdef WIN32
if(listensock == INVALID_SOCKET) {
fprintf(stderr, "failed to open listen socket!\n");
return -1;
}
#else
if(listensock == -1) {
perror("socket");
return -1;
}
#endif
sin.sin_family = AF_INET;
sin.sin_port = htons(local_listenport);
sin.sin_addr.s_addr = inet_addr(local_listenip);
if(INADDR_NONE == sin.sin_addr.s_addr) {
perror("inet_addr");
goto shutdown;
}
sockopt = 1;
setsockopt(listensock, SOL_SOCKET, SO_REUSEADDR, &sockopt,
sizeof(sockopt));
sinlen = sizeof(sin);
if(-1 == bind(listensock, (struct sockaddr *)&sin, sinlen)) {
perror("bind");
goto shutdown;
}
if(-1 == listen(listensock, 2)) {
perror("listen");
goto shutdown;
}
fprintf(stderr, "Waiting for TCP connection on %s:%d...\n",
inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
forwardsock = accept(listensock, (struct sockaddr *)&sin, &sinlen);
#ifdef WIN32
if(forwardsock == INVALID_SOCKET) {
fprintf(stderr, "failed to accept forward socket!\n");
goto shutdown;
}
#else
if(forwardsock == -1) {
perror("accept");
goto shutdown;
}
#endif
shost = inet_ntoa(sin.sin_addr);
sport = ntohs(sin.sin_port);
fprintf(stderr, "Forwarding connection from %s:%d here to remote %s:%d\n",
shost, sport, remote_desthost, remote_destport);
channel = libssh2_channel_direct_tcpip_ex(session, remote_desthost,
remote_destport, shost, sport);
if(!channel) {
fprintf(stderr, "Could not open the direct-tcpip channel!\n"
"(Note that this can be a problem at the server!"
" Please review the server logs.)\n");
goto shutdown;
}
/* Must use non-blocking IO hereafter due to the current libssh2 API */
libssh2_session_set_blocking(session, 0);
while(1) {
FD_ZERO(&fds);
FD_SET(forwardsock, &fds);
tv.tv_sec = 0;
tv.tv_usec = 100000;
rc = select(forwardsock + 1, &fds, NULL, NULL, &tv);
if(-1 == rc) {
perror("select");
goto shutdown;
}
if(rc && FD_ISSET(forwardsock, &fds)) {
len = recv(forwardsock, buf, sizeof(buf), 0);
if(len < 0) {
perror("read");
goto shutdown;
}
else if(0 == len) {
fprintf(stderr, "The client at %s:%d disconnected!\n", shost,
sport);
goto shutdown;
}
wr = 0;
while(wr < len) {
i = libssh2_channel_write(channel, buf + wr, len - wr);
if(LIBSSH2_ERROR_EAGAIN == i) {
continue;
}
if(i < 0) {
fprintf(stderr, "libssh2_channel_write: %d\n", i);
goto shutdown;
}
wr += i;
}
}
while(1) {
len = libssh2_channel_read(channel, buf, sizeof(buf));
if(LIBSSH2_ERROR_EAGAIN == len)
break;
else if(len < 0) {
fprintf(stderr, "libssh2_channel_read: %d", (int)len);
goto shutdown;
}
wr = 0;
while(wr < len) {
i = send(forwardsock, buf + wr, len - wr, 0);
if(i <= 0) {
perror("write");
goto shutdown;
}
wr += i;
}
if(libssh2_channel_eof(channel)) {
fprintf(stderr, "The server at %s:%d disconnected!\n",
remote_desthost, remote_destport);
goto shutdown;
}
}
}
shutdown:
#ifdef WIN32
closesocket(forwardsock);
closesocket(listensock);
#else
close(forwardsock);
close(listensock);
#endif
if(channel)
libssh2_channel_free(channel);
libssh2_session_disconnect(session, "Client disconnecting normally");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/subsystem_netconf.c | #include "libssh2_config.h"
#include <libssh2.h>
#ifdef WIN32
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/time.h>
#endif
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifndef INADDR_NONE
#define INADDR_NONE (in_addr_t)~0
#endif
#ifndef HAVE_SNPRINTF
# ifdef HAVE__SNPRINTF
# define snprintf _snprintf
# endif
#endif
const char *keyfile1 = "/home/username/.ssh/id_rsa.pub";
const char *keyfile2 = "/home/username/.ssh/id_rsa";
const char *username = "username";
const char *password = "";
const char *server_ip = "127.0.0.1";
enum {
AUTH_NONE = 0,
AUTH_PASSWORD,
AUTH_PUBLICKEY
};
static int netconf_write(LIBSSH2_CHANNEL *channel, const char *buf, size_t len)
{
int i;
ssize_t wr = 0;
do {
i = libssh2_channel_write(channel, buf, len);
if(i < 0) {
fprintf(stderr, "libssh2_channel_write: %d\n", i);
return -1;
}
wr += i;
} while(i > 0 && wr < (ssize_t)len);
return 0;
}
static int netconf_read_until(LIBSSH2_CHANNEL *channel, const char *endtag,
char *buf, size_t buflen)
{
ssize_t len;
size_t rd = 0;
char *endreply = NULL, *specialsequence = NULL;
memset(buf, 0, buflen);
do {
len = libssh2_channel_read(channel, buf + rd, buflen - rd);
if(LIBSSH2_ERROR_EAGAIN == len)
continue;
else if(len < 0) {
fprintf(stderr, "libssh2_channel_read: %d\n", (int)len);
return -1;
}
rd += len;
/* read more data until we see a rpc-reply closing tag followed by
* the special sequence ]]>]]> */
/* really, this MUST be replaced with proper XML parsing! */
endreply = strstr(buf, endtag);
if(endreply)
specialsequence = strstr(endreply, "]]>]]>");
} while(!specialsequence && rd < buflen);
if(!specialsequence) {
fprintf(stderr, "%s: ]]>]]> not found! read buffer too small?\n",
__func__);
return -1;
}
/* discard the special sequence so that only XML is returned */
rd = specialsequence - buf;
buf[rd] = 0;
return rd;
}
int main(int argc, char *argv[])
{
int rc, i, auth = AUTH_NONE;
struct sockaddr_in sin;
const char *fingerprint;
char *userauthlist;
LIBSSH2_SESSION *session;
LIBSSH2_CHANNEL *channel = NULL;
char buf[1048576]; /* avoid any buffer reallocation for simplicity */
ssize_t len;
#ifdef WIN32
SOCKET sock = INVALID_SOCKET;
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#else
int sock = -1;
#endif
if(argc > 1)
server_ip = argv[1];
if(argc > 2)
username = argv[2];
if(argc > 3)
password = argv[3];
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/* Connect to SSH server */
sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
#ifdef WIN32
if(sock == INVALID_SOCKET) {
fprintf(stderr, "failed to open socket!\n");
return -1;
}
#else
if(sock == -1) {
perror("socket");
return -1;
}
#endif
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = inet_addr(server_ip);
if(INADDR_NONE == sin.sin_addr.s_addr) {
fprintf(stderr, "inet_addr: Invalid IP address \"%s\"\n", server_ip);
return -1;
}
sin.sin_port = htons(830);
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "Failed to connect to %s!\n", inet_ntoa(sin.sin_addr));
return -1;
}
/* Create a session instance */
session = libssh2_session_init();
if(!session) {
fprintf(stderr, "Could not initialize SSH session!\n");
return -1;
}
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
rc = libssh2_session_handshake(session, sock);
if(rc) {
fprintf(stderr, "Error when starting up SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++)
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
fprintf(stderr, "\n");
/* check what authentication methods are available */
userauthlist = libssh2_userauth_list(session, username, strlen(username));
fprintf(stderr, "Authentication methods: %s\n", userauthlist);
if(strstr(userauthlist, "password"))
auth |= AUTH_PASSWORD;
if(strstr(userauthlist, "publickey"))
auth |= AUTH_PUBLICKEY;
/* check for options */
if(argc > 4) {
if((auth & AUTH_PASSWORD) && !strcasecmp(argv[4], "-p"))
auth = AUTH_PASSWORD;
if((auth & AUTH_PUBLICKEY) && !strcasecmp(argv[4], "-k"))
auth = AUTH_PUBLICKEY;
}
if(auth & AUTH_PASSWORD) {
if(libssh2_userauth_password(session, username, password)) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else if(auth & AUTH_PUBLICKEY) {
if(libssh2_userauth_publickey_fromfile(session, username, keyfile1,
keyfile2, password)) {
fprintf(stderr, "Authentication by public key failed!\n");
goto shutdown;
}
fprintf(stderr, "Authentication by public key succeeded.\n");
}
else {
fprintf(stderr, "No supported authentication methods found!\n");
goto shutdown;
}
/* open a channel */
channel = libssh2_channel_open_session(session);
if(!channel) {
fprintf(stderr, "Could not open the channel!\n"
"(Note that this can be a problem at the server!"
" Please review the server logs.)\n");
goto shutdown;
}
/* execute the subsystem on our channel */
if(libssh2_channel_subsystem(channel, "netconf")) {
fprintf(stderr, "Could not execute the \"netconf\" subsystem!\n"
"(Note that this can be a problem at the server!"
" Please review the server logs.)\n");
goto shutdown;
}
/* NETCONF: https://tools.ietf.org/html/draft-ietf-netconf-ssh-06 */
fprintf(stderr, "Sending NETCONF client <hello>\n");
snprintf(buf, sizeof(buf),
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<hello>"
"<capabilities>"
"<capability>urn:ietf:params:xml:ns:netconf:base:1.0</capability>"
"</capabilities>"
"</hello>\n"
"]]>]]>\n%n", (int *)&len);
if(-1 == netconf_write(channel, buf, len))
goto shutdown;
fprintf(stderr, "Reading NETCONF server <hello>\n");
len = netconf_read_until(channel, "</hello>", buf, sizeof(buf));
if(-1 == len)
goto shutdown;
fprintf(stderr, "Got %d bytes:\n----------------------\n%s",
(int)len, buf);
fprintf(stderr, "Sending NETCONF <rpc>\n");
snprintf(buf, sizeof(buf),
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<rpc xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\">"
"<get-interface-information><terse/></get-interface-information>"
"</rpc>\n"
"]]>]]>\n%n", (int *)&len);
if(-1 == netconf_write(channel, buf, len))
goto shutdown;
fprintf(stderr, "Reading NETCONF <rpc-reply>\n");
len = netconf_read_until(channel, "</rpc-reply>", buf, sizeof(buf));
if(-1 == len)
goto shutdown;
fprintf(stderr, "Got %d bytes:\n----------------------\n%s",
(int)len, buf);
shutdown:
if(channel)
libssh2_channel_free(channel);
libssh2_session_disconnect(session, "Client disconnecting normally");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/CMakeLists.txt | # Copyright (c) 2014, 2015 Alexander Lamaison <[email protected]>
#
# Redistribution and use in source and binary forms,
# with or without modification, are permitted provided
# that the following conditions are met:
#
# Redistributions of source code must retain the above
# copyright notice, this list of conditions and the
# following disclaimer.
#
# Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials
# provided with the distribution.
#
# Neither the name of the copyright holder nor the names
# of any other contributors may be used to endorse or
# promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
# CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
# OF SUCH DAMAGE.
include(CheckIncludeFiles)
include(CheckSymbolExists)
include(CopyRuntimeDependencies)
include(SocketLibraries)
set(EXAMPLES
direct_tcpip
ssh2
scp
scp_nonblock
scp_write
scp_write_nonblock
sftp
sftp_nonblock
sftp_write
sftp_write_nonblock
sftp_mkdir
sftp_mkdir_nonblock
sftp_RW_nonblock
sftp_write_sliding
sftpdir
sftpdir_nonblock
ssh2_exec
ssh2_agent
ssh2_agent_forwarding
ssh2_echo
sftp_append
subsystem_netconf
tcpip-forward)
append_needed_socket_libraries(LIBRARIES)
foreach(example ${EXAMPLES})
add_executable(example-${example} ${example}.c)
list(APPEND EXAMPLE_TARGETS example-${example})
# to find generated header
target_include_directories(example-${example} PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
target_link_libraries(example-${example} libssh2 ${LIBRARIES})
endforeach()
add_target_to_copy_dependencies(
TARGET copy_example_dependencies
DEPENDENCIES ${RUNTIME_DEPENDENCIES}
BEFORE_TARGETS ${EXAMPLE_TARGETS})
## Platform checks
check_include_files(inttypes.h HAVE_INTTYPES_H)
check_include_files(unistd.h HAVE_UNISTD_H)
check_include_files(stdlib.h HAVE_STDLIB_H)
check_include_files(sys/select.h HAVE_SYS_SELECT_H)
check_include_files(sys/socket.h HAVE_SYS_SOCKET_H)
check_include_files(sys/time.h HAVE_SYS_TIME_H)
check_include_files(arpa/inet.h HAVE_ARPA_INET_H)
check_include_files(netinet/in.h HAVE_NETINET_IN_H)
check_include_files(winsock2.h HAVE_WINSOCK2_H)
check_symbol_exists(strcasecmp strings.h HAVE_STRCASECMP)
check_symbol_exists(_stricmp string.h HAVE__STRICMP)
check_symbol_exists(snprintf stdio.h HAVE_SNPRINTF)
check_symbol_exists(_snprintf stdio.h HAVE__SNPRINTF)
check_symbol_exists(__func__ "" HAVE___FUNC__)
check_symbol_exists(__FUNCTION__ "" HAVE___FUNCTION__)
configure_file(
${CMAKE_CURRENT_SOURCE_DIR}/libssh2_config_cmake.h.in
${CMAKE_CURRENT_BINARY_DIR}/libssh2_config.h)
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/sftp_mkdir.c | /*
* Sample showing how to do SFTP mkdir
*
* The sample code has default values for host name, user name, password
* and path to copy, but you can specify them on the command line like:
*
* "sftp 192.168.0.1 user password /tmp/sftp_mkdir"
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
const char *username = "username";
const char *password = "password";
const char *sftppath = "/tmp/sftp_mkdir";
int rc;
LIBSSH2_SFTP *sftp_session;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
sftppath = argv[4];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/*
* The application code is responsible for creating the socket
* and establishing the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
rc = libssh2_session_handshake(session, sock);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(auth_pw) {
/* We could authenticate via password */
if(libssh2_userauth_password(session, username, password)) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
if(libssh2_userauth_publickey_fromfile(session, username,
"/home/username/.ssh/id_rsa.pub",
"/home/username/.ssh/id_rsa",
password)) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
sftp_session = libssh2_sftp_init(session);
if(!sftp_session) {
fprintf(stderr, "Unable to init SFTP session\n");
goto shutdown;
}
/* Since we have not set non-blocking, tell libssh2 we are blocking */
libssh2_session_set_blocking(session, 1);
/* Make a directory via SFTP */
rc = libssh2_sftp_mkdir(sftp_session, sftppath,
LIBSSH2_SFTP_S_IRWXU|
LIBSSH2_SFTP_S_IRGRP|LIBSSH2_SFTP_S_IXGRP|
LIBSSH2_SFTP_S_IROTH|LIBSSH2_SFTP_S_IXOTH);
if(rc)
fprintf(stderr, "libssh2_sftp_mkdir failed: %d\n", rc);
libssh2_sftp_shutdown(sftp_session);
shutdown:
libssh2_session_disconnect(session, "Normal Shutdown");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/sftpdir.c | /*
* Sample doing an SFTP directory listing.
*
* The sample code has default values for host name, user name, password and
* path, but you can specify them on the command line like:
*
* "sftpdir 192.168.0.1 user password /tmp/secretdir"
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#ifdef WIN32
#define __FILESIZE "I64"
#else
#define __FILESIZE "llu"
#endif
const char *keyfile1 = "~/.ssh/id_rsa.pub";
const char *keyfile2 = "~/.ssh/id_rsa";
const char *username = "username";
const char *password = "password";
static void kbd_callback(const char *name, int name_len,
const char *instruction, int instruction_len,
int num_prompts,
const LIBSSH2_USERAUTH_KBDINT_PROMPT *prompts,
LIBSSH2_USERAUTH_KBDINT_RESPONSE *responses,
void **abstract)
{
(void)name;
(void)name_len;
(void)instruction;
(void)instruction_len;
if(num_prompts == 1) {
responses[0].text = strdup(password);
responses[0].length = strlen(password);
}
(void)prompts;
(void)abstract;
} /* kbd_callback */
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int rc, sock, i, auth_pw = 0;
struct sockaddr_in sin;
const char *fingerprint;
char *userauthlist;
LIBSSH2_SESSION *session;
const char *sftppath = "/tmp/secretdir";
LIBSSH2_SFTP *sftp_session;
LIBSSH2_SFTP_HANDLE *sftp_handle;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
sftppath = argv[4];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/*
* The application code is responsible for creating the socket
* and establishing the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
rc = libssh2_session_handshake(session, sock);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
/* check what authentication methods are available */
userauthlist = libssh2_userauth_list(session, username, strlen(username));
fprintf(stderr, "Authentication methods: %s\n", userauthlist);
if(strstr(userauthlist, "password") != NULL) {
auth_pw |= 1;
}
if(strstr(userauthlist, "keyboard-interactive") != NULL) {
auth_pw |= 2;
}
if(strstr(userauthlist, "publickey") != NULL) {
auth_pw |= 4;
}
/* if we got an 5. argument we set this option if supported */
if(argc > 5) {
if((auth_pw & 1) && !strcasecmp(argv[5], "-p")) {
auth_pw = 1;
}
if((auth_pw & 2) && !strcasecmp(argv[5], "-i")) {
auth_pw = 2;
}
if((auth_pw & 4) && !strcasecmp(argv[5], "-k")) {
auth_pw = 4;
}
}
if(auth_pw & 1) {
/* We could authenticate via password */
if(libssh2_userauth_password(session, username, password)) {
fprintf(stderr, "\tAuthentication by password failed!\n");
goto shutdown;
}
else {
fprintf(stderr, "\tAuthentication by password succeeded.\n");
}
}
else if(auth_pw & 2) {
/* Or via keyboard-interactive */
if(libssh2_userauth_keyboard_interactive(session, username,
&kbd_callback) ) {
fprintf(stderr,
"\tAuthentication by keyboard-interactive failed!\n");
goto shutdown;
}
else {
fprintf(stderr,
"\tAuthentication by keyboard-interactive succeeded.\n");
}
}
else if(auth_pw & 4) {
/* Or by public key */
if(libssh2_userauth_publickey_fromfile(session, username, keyfile1,
keyfile2, password)) {
fprintf(stderr, "\tAuthentication by public key failed!\n");
goto shutdown;
}
else {
fprintf(stderr, "\tAuthentication by public key succeeded.\n");
}
}
else {
fprintf(stderr, "No supported authentication methods found!\n");
goto shutdown;
}
fprintf(stderr, "libssh2_sftp_init()!\n");
sftp_session = libssh2_sftp_init(session);
if(!sftp_session) {
fprintf(stderr, "Unable to init SFTP session\n");
goto shutdown;
}
/* Since we have not set non-blocking, tell libssh2 we are blocking */
libssh2_session_set_blocking(session, 1);
fprintf(stderr, "libssh2_sftp_opendir()!\n");
/* Request a dir listing via SFTP */
sftp_handle = libssh2_sftp_opendir(sftp_session, sftppath);
if(!sftp_handle) {
fprintf(stderr, "Unable to open dir with SFTP\n");
goto shutdown;
}
fprintf(stderr, "libssh2_sftp_opendir() is done, now receive listing!\n");
do {
char mem[512];
char longentry[512];
LIBSSH2_SFTP_ATTRIBUTES attrs;
/* loop until we fail */
rc = libssh2_sftp_readdir_ex(sftp_handle, mem, sizeof(mem),
longentry, sizeof(longentry), &attrs);
if(rc > 0) {
/* rc is the length of the file name in the mem
buffer */
if(longentry[0] != '\0') {
printf("%s\n", longentry);
}
else {
if(attrs.flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) {
/* this should check what permissions it
is and print the output accordingly */
printf("--fix----- ");
}
else {
printf("---------- ");
}
if(attrs.flags & LIBSSH2_SFTP_ATTR_UIDGID) {
printf("%4d %4d ", (int) attrs.uid, (int) attrs.gid);
}
else {
printf(" - - ");
}
if(attrs.flags & LIBSSH2_SFTP_ATTR_SIZE) {
printf("%8" __FILESIZE " ", attrs.filesize);
}
printf("%s\n", mem);
}
}
else
break;
} while(1);
libssh2_sftp_closedir(sftp_handle);
libssh2_sftp_shutdown(sftp_session);
shutdown:
libssh2_session_disconnect(session, "Normal Shutdown");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/scp_nonblock.c | /*
* Sample showing how to do SCP transfers in a non-blocking manner.
*
* The sample code has default values for host name, user name, password
* and path to copy, but you can specify them on the command line like:
*
* "scp_nonblock 192.168.0.1 user password /tmp/secrets"
*/
#include "libssh2_config.h"
#include <libssh2.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#ifdef HAVE_GETTIMEOFDAY
/* diff in ms */
static long tvdiff(struct timeval newer, struct timeval older)
{
return (newer.tv_sec-older.tv_sec)*1000+
(newer.tv_usec-older.tv_usec)/1000;
}
#endif
static int waitsocket(int socket_fd, LIBSSH2_SESSION *session)
{
struct timeval timeout;
int rc;
fd_set fd;
fd_set *writefd = NULL;
fd_set *readfd = NULL;
int dir;
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fd);
FD_SET(socket_fd, &fd);
/* now make sure we wait in the correct direction */
dir = libssh2_session_block_directions(session);
if(dir & LIBSSH2_SESSION_BLOCK_INBOUND)
readfd = &fd;
if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND)
writefd = &fd;
rc = select(socket_fd + 1, readfd, writefd, NULL, &timeout);
return rc;
}
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
LIBSSH2_CHANNEL *channel;
const char *username = "username";
const char *password = "password";
const char *scppath = "/tmp/TEST";
libssh2_struct_stat fileinfo;
#ifdef HAVE_GETTIMEOFDAY
struct timeval start;
struct timeval end;
long time_ms;
#endif
int rc;
int spin = 0;
libssh2_struct_stat_size got = 0;
libssh2_struct_stat_size total = 0;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
scppath = argv[4];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/* Ultra basic "connect to port 22 on localhost"
* Your code is responsible for creating the socket establishing the
* connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin), sizeof(struct sockaddr_in))) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance */
session = libssh2_session_init();
if(!session)
return -1;
/* Since we have set non-blocking, tell libssh2 we are non-blocking */
libssh2_session_set_blocking(session, 0);
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&start, NULL);
#endif
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
while((rc = libssh2_session_handshake(session, sock)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(auth_pw) {
/* We could authenticate via password */
while((rc = libssh2_userauth_password(session, username, password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
while((rc = libssh2_userauth_publickey_fromfile(session, username,
"/home/username/"
".ssh/id_rsa.pub",
"/home/username/"
".ssh/id_rsa",
password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
#if 0
libssh2_trace(session, LIBSSH2_TRACE_CONN);
#endif
/* Request a file via SCP */
fprintf(stderr, "libssh2_scp_recv2()!\n");
do {
channel = libssh2_scp_recv2(session, scppath, &fileinfo);
if(!channel) {
if(libssh2_session_last_errno(session) != LIBSSH2_ERROR_EAGAIN) {
char *err_msg;
libssh2_session_last_error(session, &err_msg, NULL, 0);
fprintf(stderr, "%s\n", err_msg);
goto shutdown;
}
else {
fprintf(stderr, "libssh2_scp_recv() spin\n");
waitsocket(sock, session);
}
}
} while(!channel);
fprintf(stderr, "libssh2_scp_recv() is done, now receive data!\n");
while(got < fileinfo.st_size) {
char mem[1024*24];
int rc;
do {
int amount = sizeof(mem);
if((fileinfo.st_size -got) < amount) {
amount = (int)(fileinfo.st_size - got);
}
/* loop until we block */
rc = libssh2_channel_read(channel, mem, amount);
if(rc > 0) {
write(1, mem, rc);
got += rc;
total += rc;
}
} while(rc > 0);
if((rc == LIBSSH2_ERROR_EAGAIN) && (got < fileinfo.st_size)) {
/* this is due to blocking that would occur otherwise
so we loop on this condition */
spin++;
waitsocket(sock, session); /* now we wait */
continue;
}
break;
}
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&end, NULL);
time_ms = tvdiff(end, start);
fprintf(stderr, "Got %ld bytes in %ld ms = %.1f bytes/sec spin: %d\n",
(long)total,
time_ms, total/(time_ms/1000.0), spin);
#else
fprintf(stderr, "Got %ld bytes spin: %d\n", (long)total, spin);
#endif
libssh2_channel_free(channel);
channel = NULL;
shutdown:
libssh2_session_disconnect(session,
"Normal Shutdown, Thank you for playing");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/tcpip-forward.c | #include "libssh2_config.h"
#include <libssh2.h>
#ifdef WIN32
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/time.h>
#endif
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifndef INADDR_NONE
#define INADDR_NONE (in_addr_t)-1
#endif
const char *keyfile1 = "/home/username/.ssh/id_rsa.pub";
const char *keyfile2 = "/home/username/.ssh/id_rsa";
const char *username = "username";
const char *password = "";
const char *server_ip = "127.0.0.1";
const char *remote_listenhost = "localhost"; /* resolved by the server */
int remote_wantport = 2222;
int remote_listenport;
const char *local_destip = "127.0.0.1";
int local_destport = 22;
enum {
AUTH_NONE = 0,
AUTH_PASSWORD,
AUTH_PUBLICKEY
};
int main(int argc, char *argv[])
{
int rc, i, auth = AUTH_NONE;
struct sockaddr_in sin;
socklen_t sinlen = sizeof(sin);
const char *fingerprint;
char *userauthlist;
LIBSSH2_SESSION *session;
LIBSSH2_LISTENER *listener = NULL;
LIBSSH2_CHANNEL *channel = NULL;
fd_set fds;
struct timeval tv;
ssize_t len, wr;
char buf[16384];
#ifdef WIN32
SOCKET sock = INVALID_SOCKET, forwardsock = INVALID_SOCKET;
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#else
int sock = -1, forwardsock = -1;
#endif
if(argc > 1)
server_ip = argv[1];
if(argc > 2)
username = argv[2];
if(argc > 3)
password = argv[3];
if(argc > 4)
remote_listenhost = argv[4];
if(argc > 5)
remote_wantport = atoi(argv[5]);
if(argc > 6)
local_destip = argv[6];
if(argc > 7)
local_destport = atoi(argv[7]);
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/* Connect to SSH server */
sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
#ifdef WIN32
if(sock == INVALID_SOCKET) {
fprintf(stderr, "failed to open socket!\n");
return -1;
}
#else
if(sock == -1) {
perror("socket");
return -1;
}
#endif
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = inet_addr(server_ip);
if(INADDR_NONE == sin.sin_addr.s_addr) {
perror("inet_addr");
return -1;
}
sin.sin_port = htons(22);
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance */
session = libssh2_session_init();
if(!session) {
fprintf(stderr, "Could not initialize SSH session!\n");
return -1;
}
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
rc = libssh2_session_handshake(session, sock);
if(rc) {
fprintf(stderr, "Error when starting up SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++)
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
fprintf(stderr, "\n");
/* check what authentication methods are available */
userauthlist = libssh2_userauth_list(session, username, strlen(username));
fprintf(stderr, "Authentication methods: %s\n", userauthlist);
if(strstr(userauthlist, "password"))
auth |= AUTH_PASSWORD;
if(strstr(userauthlist, "publickey"))
auth |= AUTH_PUBLICKEY;
/* check for options */
if(argc > 8) {
if((auth & AUTH_PASSWORD) && !strcasecmp(argv[8], "-p"))
auth = AUTH_PASSWORD;
if((auth & AUTH_PUBLICKEY) && !strcasecmp(argv[8], "-k"))
auth = AUTH_PUBLICKEY;
}
if(auth & AUTH_PASSWORD) {
if(libssh2_userauth_password(session, username, password)) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else if(auth & AUTH_PUBLICKEY) {
if(libssh2_userauth_publickey_fromfile(session, username, keyfile1,
keyfile2, password)) {
fprintf(stderr, "\tAuthentication by public key failed!\n");
goto shutdown;
}
fprintf(stderr, "\tAuthentication by public key succeeded.\n");
}
else {
fprintf(stderr, "No supported authentication methods found!\n");
goto shutdown;
}
fprintf(stderr, "Asking server to listen on remote %s:%d\n",
remote_listenhost, remote_wantport);
listener = libssh2_channel_forward_listen_ex(session, remote_listenhost,
remote_wantport, &remote_listenport, 1);
if(!listener) {
fprintf(stderr, "Could not start the tcpip-forward listener!\n"
"(Note that this can be a problem at the server!"
" Please review the server logs.)\n");
goto shutdown;
}
fprintf(stderr, "Server is listening on %s:%d\n", remote_listenhost,
remote_listenport);
fprintf(stderr, "Waiting for remote connection\n");
channel = libssh2_channel_forward_accept(listener);
if(!channel) {
fprintf(stderr, "Could not accept connection!\n"
"(Note that this can be a problem at the server!"
" Please review the server logs.)\n");
goto shutdown;
}
fprintf(stderr,
"Accepted remote connection. Connecting to local server %s:%d\n",
local_destip, local_destport);
forwardsock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
#ifdef WIN32
if(forwardsock == INVALID_SOCKET) {
fprintf(stderr, "failed to open forward socket!\n");
goto shutdown;
}
#else
if(forwardsock == -1) {
perror("socket");
goto shutdown;
}
#endif
sin.sin_family = AF_INET;
sin.sin_port = htons(local_destport);
sin.sin_addr.s_addr = inet_addr(local_destip);
if(INADDR_NONE == sin.sin_addr.s_addr) {
perror("inet_addr");
goto shutdown;
}
if(-1 == connect(forwardsock, (struct sockaddr *)&sin, sinlen)) {
perror("connect");
goto shutdown;
}
fprintf(stderr, "Forwarding connection from remote %s:%d to local %s:%d\n",
remote_listenhost, remote_listenport, local_destip, local_destport);
/* Must use non-blocking IO hereafter due to the current libssh2 API */
libssh2_session_set_blocking(session, 0);
while(1) {
FD_ZERO(&fds);
FD_SET(forwardsock, &fds);
tv.tv_sec = 0;
tv.tv_usec = 100000;
rc = select(forwardsock + 1, &fds, NULL, NULL, &tv);
if(-1 == rc) {
perror("select");
goto shutdown;
}
if(rc && FD_ISSET(forwardsock, &fds)) {
len = recv(forwardsock, buf, sizeof(buf), 0);
if(len < 0) {
perror("read");
goto shutdown;
}
else if(0 == len) {
fprintf(stderr, "The local server at %s:%d disconnected!\n",
local_destip, local_destport);
goto shutdown;
}
wr = 0;
do {
i = libssh2_channel_write(channel, buf, len);
if(i < 0) {
fprintf(stderr, "libssh2_channel_write: %d\n", i);
goto shutdown;
}
wr += i;
} while(i > 0 && wr < len);
}
while(1) {
len = libssh2_channel_read(channel, buf, sizeof(buf));
if(LIBSSH2_ERROR_EAGAIN == len)
break;
else if(len < 0) {
fprintf(stderr, "libssh2_channel_read: %d", (int)len);
goto shutdown;
}
wr = 0;
while(wr < len) {
i = send(forwardsock, buf + wr, len - wr, 0);
if(i <= 0) {
perror("write");
goto shutdown;
}
wr += i;
}
if(libssh2_channel_eof(channel)) {
fprintf(stderr, "The remote client at %s:%d disconnected!\n",
remote_listenhost, remote_listenport);
goto shutdown;
}
}
}
shutdown:
#ifdef WIN32
closesocket(forwardsock);
#else
close(forwardsock);
#endif
if(channel)
libssh2_channel_free(channel);
if(listener)
libssh2_channel_forward_cancel(listener);
libssh2_session_disconnect(session, "Client disconnecting normally");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/ssh2_echo.c | /*
* Run it like this:
*
* $ ./ssh2_echo 127.0.0.1 user password
*
* The code sends a 'cat' command, and then writes a lot of data to it only to
* check that reading the returned data sums up to the same amount.
*
*/
#include "libssh2_config.h"
#include <libssh2.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <sys/types.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
static int waitsocket(int socket_fd, LIBSSH2_SESSION *session)
{
struct timeval timeout;
int rc;
fd_set fd;
fd_set *writefd = NULL;
fd_set *readfd = NULL;
int dir;
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fd);
FD_SET(socket_fd, &fd);
/* now make sure we wait in the correct direction */
dir = libssh2_session_block_directions(session);
if(dir & LIBSSH2_SESSION_BLOCK_INBOUND)
readfd = &fd;
if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND)
writefd = &fd;
rc = select(socket_fd + 1, readfd, writefd, NULL, &timeout);
return rc;
}
#define BUFSIZE 32000
int main(int argc, char *argv[])
{
const char *hostname = "127.0.0.1";
const char *commandline = "cat";
const char *username = "user";
const char *password = "password";
unsigned long hostaddr;
int sock;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
LIBSSH2_CHANNEL *channel;
int rc;
int exitcode = 0;
char *exitsignal = (char *)"none";
size_t len;
LIBSSH2_KNOWNHOSTS *nh;
int type;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1)
/* must be ip address only */
hostname = argv[1];
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
hostaddr = inet_addr(hostname);
/* Ultra basic "connect to port 22 on localhost"
* Your code is responsible for creating the socket establishing the
* connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance */
session = libssh2_session_init();
if(!session)
return -1;
/* tell libssh2 we want it all done non-blocking */
libssh2_session_set_blocking(session, 0);
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
while((rc = libssh2_session_handshake(session, sock)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
nh = libssh2_knownhost_init(session);
if(!nh) {
/* eeek, do cleanup here */
return 2;
}
/* read all hosts from here */
libssh2_knownhost_readfile(nh, "known_hosts",
LIBSSH2_KNOWNHOST_FILE_OPENSSH);
/* store all known hosts to here */
libssh2_knownhost_writefile(nh, "dumpfile",
LIBSSH2_KNOWNHOST_FILE_OPENSSH);
fingerprint = libssh2_session_hostkey(session, &len, &type);
if(fingerprint) {
struct libssh2_knownhost *host;
int check = libssh2_knownhost_checkp(nh, hostname, 22,
fingerprint, len,
LIBSSH2_KNOWNHOST_TYPE_PLAIN|
LIBSSH2_KNOWNHOST_KEYENC_RAW,
&host);
fprintf(stderr, "Host check: %d, key: %s\n", check,
(check <= LIBSSH2_KNOWNHOST_CHECK_MISMATCH)?
host->key:"<none>");
/*****
* At this point, we could verify that 'check' tells us the key is
* fine or bail out.
*****/
}
else {
/* eeek, do cleanup here */
return 3;
}
libssh2_knownhost_free(nh);
if(strlen(password) != 0) {
/* We could authenticate via password */
while((rc = libssh2_userauth_password(session, username, password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Authentication by password failed.\n");
exit(1);
}
}
libssh2_trace(session, LIBSSH2_TRACE_SOCKET);
/* Exec non-blocking on the remove host */
while((channel = libssh2_channel_open_session(session)) == NULL &&
libssh2_session_last_error(session, NULL, NULL, 0) ==
LIBSSH2_ERROR_EAGAIN) {
waitsocket(sock, session);
}
if(channel == NULL) {
fprintf(stderr, "Error\n");
exit(1);
}
while((rc = libssh2_channel_exec(channel, commandline)) ==
LIBSSH2_ERROR_EAGAIN)
waitsocket(sock, session);
if(rc != 0) {
fprintf(stderr, "exec error\n");
exit(1);
}
else {
LIBSSH2_POLLFD *fds = NULL;
int running = 1;
int bufsize = BUFSIZE;
char buffer[BUFSIZE];
int totsize = 1500000;
int totwritten = 0;
int totread = 0;
int partials = 0;
int rereads = 0;
int rewrites = 0;
int i;
for(i = 0; i < BUFSIZE; i++)
buffer[i] = 'A';
fds = malloc(sizeof (LIBSSH2_POLLFD));
if(!fds) {
fprintf(stderr, "malloc failed\n");
exit(1);
}
fds[0].type = LIBSSH2_POLLFD_CHANNEL;
fds[0].fd.channel = channel;
fds[0].events = LIBSSH2_POLLFD_POLLIN | LIBSSH2_POLLFD_POLLOUT;
do {
int rc = (libssh2_poll(fds, 1, 10));
int act = 0;
if(rc < 1)
continue;
if(fds[0].revents & LIBSSH2_POLLFD_POLLIN) {
int n = libssh2_channel_read(channel, buffer, sizeof(buffer));
act++;
if(n == LIBSSH2_ERROR_EAGAIN) {
rereads++;
fprintf(stderr, "will read again\n");
}
else if(n < 0) {
fprintf(stderr, "read failed\n");
exit(1);
}
else {
totread += n;
fprintf(stderr, "read %d bytes (%d in total)\n",
n, totread);
}
}
if(fds[0].revents & LIBSSH2_POLLFD_POLLOUT) {
act++;
if(totwritten < totsize) {
/* we have not written all data yet */
int left = totsize - totwritten;
int size = (left < bufsize) ? left : bufsize;
int n = libssh2_channel_write_ex(channel, 0, buffer, size);
if(n == LIBSSH2_ERROR_EAGAIN) {
rewrites++;
fprintf(stderr, "will write again\n");
}
else if(n < 0) {
fprintf(stderr, "write failed\n");
exit(1);
}
else {
totwritten += n;
fprintf(stderr, "wrote %d bytes (%d in total)",
n, totwritten);
if(left >= bufsize && n != bufsize) {
partials++;
fprintf(stderr, " PARTIAL");
}
fprintf(stderr, "\n");
}
}
else {
/* all data written, send EOF */
rc = libssh2_channel_send_eof(channel);
if(rc == LIBSSH2_ERROR_EAGAIN) {
fprintf(stderr, "will send eof again\n");
}
else if(rc < 0) {
fprintf(stderr, "send eof failed\n");
exit(1);
}
else {
fprintf(stderr, "sent eof\n");
/* we're done writing, stop listening for OUT events */
fds[0].events &= ~LIBSSH2_POLLFD_POLLOUT;
}
}
}
if(fds[0].revents & LIBSSH2_POLLFD_CHANNEL_CLOSED) {
if(!act) /* don't leave loop until we have read all data */
running = 0;
}
} while(running);
exitcode = 127;
while((rc = libssh2_channel_close(channel)) == LIBSSH2_ERROR_EAGAIN)
waitsocket(sock, session);
if(rc == 0) {
exitcode = libssh2_channel_get_exit_status(channel);
libssh2_channel_get_exit_signal(channel, &exitsignal,
NULL, NULL, NULL, NULL, NULL);
}
if(exitsignal)
fprintf(stderr, "\nGot signal: %s\n", exitsignal);
libssh2_channel_free(channel);
channel = NULL;
fprintf(stderr, "\nrereads: %d rewrites: %d totwritten %d\n",
rereads, rewrites, totwritten);
if(totwritten != totread) {
fprintf(stderr, "\n*** FAIL bytes written: %d bytes "
"read: %d ***\n", totwritten, totread);
exit(1);
}
}
libssh2_session_disconnect(session,
"Normal Shutdown, Thank you for playing");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return exitcode;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/ssh2_agent_forwarding.c | /*
* Sample showing how to use libssh2 to request agent forwarding
* on the remote host. The command executed will run with agent forwarded
* so you should be able to do things like clone out protected git
* repos and such.
*
* The example uses agent authentication to ensure an agent to forward
* is running.
*
* Run it like this:
*
* $ ./ssh2_agent_forwarding 127.0.0.1 user "uptime"
*
*/
#include "libssh2_config.h"
#include <libssh2.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/types.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
static int waitsocket(int socket_fd, LIBSSH2_SESSION *session)
{
struct timeval timeout;
int rc;
fd_set fd;
fd_set *writefd = NULL;
fd_set *readfd = NULL;
int dir;
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fd);
FD_SET(socket_fd, &fd);
/* now make sure we wait in the correct direction */
dir = libssh2_session_block_directions(session);
if(dir & LIBSSH2_SESSION_BLOCK_INBOUND)
readfd = &fd;
if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND)
writefd = &fd;
rc = select(socket_fd + 1, readfd, writefd, NULL, &timeout);
return rc;
}
int main(int argc, char *argv[])
{
const char *hostname = "127.0.0.1";
const char *commandline = "uptime";
const char *username = NULL;
unsigned long hostaddr;
int sock;
struct sockaddr_in sin;
LIBSSH2_SESSION *session;
LIBSSH2_CHANNEL *channel;
LIBSSH2_AGENT *agent = NULL;
struct libssh2_agent_publickey *identity, *prev_identity = NULL;
int rc;
int exitcode;
char *exitsignal = (char *)"none";
int bytecount = 0;
#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(2, 0), &wsadata);
#endif
if(argc < 2) {
fprintf(stderr, "At least IP and username arguments are required.\n");
return 1;
}
/* must be ip address only */
hostname = argv[1];
username = argv[2];
if(argc > 3) {
commandline = argv[3];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
hostaddr = inet_addr(hostname);
/* Ultra basic "connect to port 22 on localhost"
* Your code is responsible for creating the socket establishing the
* connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance */
session = libssh2_session_init();
if(!session)
return -1;
if(libssh2_session_handshake(session, sock) != 0) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* Connect to the ssh-agent */
agent = libssh2_agent_init(session);
if(!agent) {
fprintf(stderr, "Failure initializing ssh-agent support\n");
rc = 1;
goto shutdown;
}
if(libssh2_agent_connect(agent)) {
fprintf(stderr, "Failure connecting to ssh-agent\n");
rc = 1;
goto shutdown;
}
if(libssh2_agent_list_identities(agent)) {
fprintf(stderr, "Failure requesting identities to ssh-agent\n");
rc = 1;
goto shutdown;
}
while(1) {
rc = libssh2_agent_get_identity(agent, &identity, prev_identity);
if(rc == 1)
break;
if(rc < 0) {
fprintf(stderr,
"Failure obtaining identity from ssh-agent support\n");
rc = 1;
goto shutdown;
}
if(libssh2_agent_userauth(agent, username, identity)) {
fprintf(stderr, "\tAuthentication with username %s and "
"public key %s failed!\n",
username, identity->comment);
}
else {
fprintf(stderr, "\tAuthentication with username %s and "
"public key %s succeeded!\n",
username, identity->comment);
break;
}
prev_identity = identity;
}
if(rc) {
fprintf(stderr, "Couldn't continue authentication\n");
goto shutdown;
}
#if 0
libssh2_trace(session, ~0);
#endif
/* Set session to non-blocking */
libssh2_session_set_blocking(session, 0);
/* Exec non-blocking on the remove host */
while((channel = libssh2_channel_open_session(session)) == NULL &&
libssh2_session_last_error(session, NULL, NULL, 0) ==
LIBSSH2_ERROR_EAGAIN) {
waitsocket(sock, session);
}
if(channel == NULL) {
fprintf(stderr, "Error\n");
exit(1);
}
while((rc = libssh2_channel_request_auth_agent(channel)) ==
LIBSSH2_ERROR_EAGAIN) {
waitsocket(sock, session);
}
if(rc != 0) {
fprintf(stderr, "Error, couldn't request auth agent, error code %d.\n",
rc);
exit(1);
}
else {
fprintf(stdout, "\tAgent forwarding request succeeded!\n");
}
while((rc = libssh2_channel_exec(channel, commandline)) ==
LIBSSH2_ERROR_EAGAIN) {
waitsocket(sock, session);
}
if(rc != 0) {
fprintf(stderr, "Error\n");
exit(1);
}
for(;;) {
/* loop until we block */
int rc;
do {
char buffer[0x4000];
rc = libssh2_channel_read(channel, buffer, sizeof(buffer) );
if(rc > 0) {
int i;
bytecount += rc;
fprintf(stderr, "We read:\n");
for(i = 0; i < rc; ++i)
fputc(buffer[i], stderr);
fprintf(stderr, "\n");
}
else {
if(rc != LIBSSH2_ERROR_EAGAIN)
/* no need to output this for the EAGAIN case */
fprintf(stderr, "libssh2_channel_read returned %d\n", rc);
}
}
while(rc > 0);
/* this is due to blocking that would occur otherwise so we loop on
this condition */
if(rc == LIBSSH2_ERROR_EAGAIN) {
waitsocket(sock, session);
}
else
break;
}
exitcode = 127;
while((rc = libssh2_channel_close(channel)) == LIBSSH2_ERROR_EAGAIN) {
waitsocket(sock, session);
}
if(rc == 0) {
exitcode = libssh2_channel_get_exit_status(channel);
libssh2_channel_get_exit_signal(channel, &exitsignal,
NULL, NULL, NULL, NULL, NULL);
}
if(exitsignal) {
printf("\nGot signal: %s\n", exitsignal);
}
else {
printf("\nEXIT: %d bytecount: %d\n", exitcode, bytecount);
}
libssh2_channel_free(channel);
channel = NULL;
shutdown:
libssh2_session_disconnect(session,
"Normal Shutdown, Thank you for playing");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/x11.c | /*
*
* Sample showing how to makes SSH2 with X11 Forwarding works.
*
* Usage :
* "ssh2 host user password [DEBUG]"
*/
#include <string.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/select.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/un.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <termios.h>
#include <libssh2.h>
#define _PATH_UNIX_X "/tmp/.X11-unix/X%d"
/*
* Chained list that contains channels and associated X11 socket for each X11
* connections
*/
struct chan_X11_list {
LIBSSH2_CHANNEL *chan;
int sock;
struct chan_X11_list *next;
};
struct chan_X11_list * gp_x11_chan = NULL;
struct termios _saved_tio;
/*
* Utility function to remove a Node of the chained list
*/
static void remove_node(struct chan_X11_list *elem)
{
struct chan_X11_list *current_node = NULL;
current_node = gp_x11_chan;
if(gp_x11_chan == elem) {
gp_x11_chan = gp_x11_chan->next;
free(current_node);
return;
}
while(current_node->next != NULL) {
if(current_node->next == elem) {
current_node->next = current_node->next->next;
current_node = current_node->next;
free(current_node);
break;
}
}
}
static void session_shutdown(LIBSSH2_SESSION *session)
{
libssh2_session_disconnect(session,
"Session Shutdown, Thank you for playing");
libssh2_session_free(session);
}
static int _raw_mode(void)
{
int rc;
struct termios tio;
rc = tcgetattr(fileno(stdin), &tio);
if(rc != -1) {
_saved_tio = tio;
/* do the equivalent of cfmakeraw() manually, to build on Solaris */
tio.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
tio.c_oflag &= ~OPOST;
tio.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
tio.c_cflag &= ~(CSIZE|PARENB);
tio.c_cflag |= CS8;
rc = tcsetattr(fileno(stdin), TCSADRAIN, &tio);
}
return rc;
}
static int _normal_mode(void)
{
int rc;
rc = tcsetattr(fileno(stdin), TCSADRAIN, &_saved_tio);
return rc;
}
/*
* CallBack to initialize the forwarding.
* Save the channel to loop on it, save the X11 forwarded socket to send
* and receive info from our X server.
*/
static void x11_callback(LIBSSH2_SESSION *session, LIBSSH2_CHANNEL *channel,
char *shost, int sport, void **abstract)
{
const char *display = NULL;
char *ptr = NULL;
char *temp_buff = NULL;
int display_port = 0;
int sock = 0;
int rc = 0;
struct sockaddr_un addr;
struct chan_X11_list *new;
struct chan_X11_list *chan_iter;
(void)session;
(void)shost;
(void)sport;
(void)abstract;
/*
* Connect to the display
* Inspired by x11_connect_display in openssh
*/
display = getenv("DISPLAY");
if(display != NULL) {
if(strncmp(display, "unix:", 5) == 0 ||
display[0] == ':') {
/* Connect to the local unix domain */
ptr = strrchr(display, ':');
temp_buff = (char *) calloc(strlen(ptr + 1), sizeof(char));
if(!temp_buff) {
perror("calloc");
return;
}
memcpy(temp_buff, ptr + 1, strlen(ptr + 1));
display_port = atoi(temp_buff);
free(temp_buff);
sock = socket(AF_UNIX, SOCK_STREAM, 0);
if(sock < 0)
return;
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
snprintf(addr.sun_path, sizeof(addr.sun_path),
_PATH_UNIX_X, display_port);
rc = connect(sock, (struct sockaddr *) &addr, sizeof(addr));
if(rc != -1) {
/* Connection Successfull */
if(gp_x11_chan == NULL) {
/* Calloc ensure that gp_X11_chan is full of 0 */
gp_x11_chan = (struct chan_X11_list *)
calloc(1, sizeof(struct chan_X11_list));
gp_x11_chan->sock = sock;
gp_x11_chan->chan = channel;
gp_x11_chan->next = NULL;
}
else {
chan_iter = gp_x11_chan;
while(chan_iter->next != NULL)
chan_iter = chan_iter->next;
/* Create the new Node */
new = (struct chan_X11_list *)
malloc(sizeof(struct chan_X11_list));
new->sock = sock;
new->chan = channel;
new->next = NULL;
chan_iter->next = new;
}
}
else
close(sock);
}
}
return;
}
/*
* Send and receive Data for the X11 channel.
* If the connection is closed, returns -1, 0 either.
*/
static int x11_send_receive(LIBSSH2_CHANNEL *channel, int sock)
{
char *buf = NULL;
int bufsize = 8192;
int rc = 0;
int nfds = 1;
LIBSSH2_POLLFD *fds = NULL;
fd_set set;
struct timeval timeval_out;
timeval_out.tv_sec = 0;
timeval_out.tv_usec = 0;
FD_ZERO(&set);
FD_SET(sock, &set);
buf = calloc(bufsize, sizeof(char));
if(!buf)
return 0;
fds = malloc(sizeof (LIBSSH2_POLLFD));
if(!fds) {
free(buf);
return 0;
}
fds[0].type = LIBSSH2_POLLFD_CHANNEL;
fds[0].fd.channel = channel;
fds[0].events = LIBSSH2_POLLFD_POLLIN;
fds[0].revents = LIBSSH2_POLLFD_POLLIN;
rc = libssh2_poll(fds, nfds, 0);
if(rc >0) {
rc = libssh2_channel_read(channel, buf, bufsize);
write(sock, buf, rc);
}
rc = select(sock + 1, &set, NULL, NULL, &timeval_out);
if(rc > 0) {
memset((void *)buf, 0, bufsize);
/* Data in sock*/
rc = read(sock, buf, bufsize);
if(rc > 0) {
libssh2_channel_write(channel, buf, rc);
}
else {
free(buf);
return -1;
}
}
free(fds);
free(buf);
if(libssh2_channel_eof(channel) == 1) {
return -1;
}
return 0;
}
/*
* Main, more than inspired by ssh2.c by Bagder
*/
int
main (int argc, char *argv[])
{
unsigned long hostaddr = 0;
int sock = 0;
int rc = 0;
struct sockaddr_in sin;
LIBSSH2_SESSION *session;
LIBSSH2_CHANNEL *channel;
char *username = NULL;
char *password = NULL;
size_t bufsiz = 8193;
char *buf = NULL;
int set_debug_on = 0;
int nfds = 1;
LIBSSH2_POLLFD *fds = NULL;
/* Chan List struct */
struct chan_X11_list *current_node = NULL;
/* Struct winsize for term size */
struct winsize w_size;
struct winsize w_size_bck;
/* For select on stdin */
fd_set set;
struct timeval timeval_out;
timeval_out.tv_sec = 0;
timeval_out.tv_usec = 10;
if(argc > 3) {
hostaddr = inet_addr(argv[1]);
username = argv[2];
password = argv[3];
}
else {
fprintf(stderr, "Usage: %s destination username password",
argv[0]);
return -1;
}
if(argc > 4) {
set_debug_on = 1;
fprintf(stderr, "DEBUG is ON: %d\n", set_debug_on);
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
sock = socket(AF_INET, SOCK_STREAM, 0);
if(sock == -1) {
perror("socket");
return -1;
}
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
rc = connect(sock, (struct sockaddr *) &sin,
sizeof(struct sockaddr_in));
if(rc != 0) {
fprintf(stderr, "Failed to established connection!\n");
return -1;
}
/* Open a session */
session = libssh2_session_init();
rc = libssh2_session_handshake(session, sock);
if(rc != 0) {
fprintf(stderr, "Failed Start the SSH session\n");
return -1;
}
if(set_debug_on == 1)
libssh2_trace(session, LIBSSH2_TRACE_CONN);
/* ignore pedantic warnings by gcc on the callback argument */
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpedantic"
/* Set X11 Callback */
libssh2_session_callback_set(session, LIBSSH2_CALLBACK_X11,
(void *)x11_callback);
#pragma GCC diagnostic pop
/* Authenticate via password */
rc = libssh2_userauth_password(session, username, password);
if(rc != 0) {
fprintf(stderr, "Failed to authenticate\n");
session_shutdown(session);
close(sock);
return -1;
}
/* Open a channel */
channel = libssh2_channel_open_session(session);
if(channel == NULL) {
fprintf(stderr, "Failed to open a new channel\n");
session_shutdown(session);
close(sock);
return -1;
}
/* Request a PTY */
rc = libssh2_channel_request_pty(channel, "xterm");
if(rc != 0) {
fprintf(stderr, "Failed to request a pty\n");
session_shutdown(session);
close(sock);
return -1;
}
/* Request X11 */
rc = libssh2_channel_x11_req(channel, 0);
if(rc != 0) {
fprintf(stderr, "Failed to request X11 forwarding\n");
session_shutdown(session);
close(sock);
return -1;
}
/* Request a shell */
rc = libssh2_channel_shell(channel);
if(rc != 0) {
fprintf(stderr, "Failed to open a shell\n");
session_shutdown(session);
close(sock);
return -1;
}
rc = _raw_mode();
if(rc != 0) {
fprintf(stderr, "Failed to entered in raw mode\n");
session_shutdown(session);
close(sock);
return -1;
}
memset(&w_size, 0, sizeof(struct winsize));
memset(&w_size_bck, 0, sizeof(struct winsize));
while(1) {
FD_ZERO(&set);
FD_SET(fileno(stdin), &set);
/* Search if a resize pty has to be send */
ioctl(fileno(stdin), TIOCGWINSZ, &w_size);
if((w_size.ws_row != w_size_bck.ws_row) ||
(w_size.ws_col != w_size_bck.ws_col)) {
w_size_bck = w_size;
libssh2_channel_request_pty_size(channel,
w_size.ws_col,
w_size.ws_row);
}
buf = calloc(bufsiz, sizeof(char));
if(buf == NULL)
break;
fds = malloc(sizeof (LIBSSH2_POLLFD));
if(fds == NULL) {
free(buf);
break;
}
fds[0].type = LIBSSH2_POLLFD_CHANNEL;
fds[0].fd.channel = channel;
fds[0].events = LIBSSH2_POLLFD_POLLIN;
fds[0].revents = LIBSSH2_POLLFD_POLLIN;
rc = libssh2_poll(fds, nfds, 0);
if(rc >0) {
libssh2_channel_read(channel, buf, sizeof(buf));
fprintf(stdout, "%s", buf);
fflush(stdout);
}
/* Looping on X clients */
if(gp_x11_chan != NULL) {
current_node = gp_x11_chan;
}
else
current_node = NULL;
while(current_node != NULL) {
struct chan_X11_list *next_node;
rc = x11_send_receive(current_node->chan, current_node->sock);
next_node = current_node->next;
if(rc == -1) {
shutdown(current_node->sock, SHUT_RDWR);
close(current_node->sock);
remove_node(current_node);
}
current_node = next_node;
}
rc = select(fileno(stdin) + 1, &set, NULL, NULL, &timeval_out);
if(rc > 0) {
/* Data in stdin*/
rc = read(fileno(stdin), buf, 1);
if(rc > 0)
libssh2_channel_write(channel, buf, sizeof(buf));
}
free(fds);
free(buf);
if(libssh2_channel_eof (channel) == 1) {
break;
}
}
if(channel) {
libssh2_channel_free(channel);
channel = NULL;
}
_normal_mode();
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/scp_write_nonblock.c | /*
* Sample showing how to do an SCP non-blocking upload transfer.
*/
#include "libssh2_config.h"
#include <libssh2.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#include <time.h>
static int waitsocket(int socket_fd, LIBSSH2_SESSION *session)
{
struct timeval timeout;
int rc;
fd_set fd;
fd_set *writefd = NULL;
fd_set *readfd = NULL;
int dir;
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fd);
FD_SET(socket_fd, &fd);
/* now make sure we wait in the correct direction */
dir = libssh2_session_block_directions(session);
if(dir & LIBSSH2_SESSION_BLOCK_INBOUND)
readfd = &fd;
if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND)
writefd = &fd;
rc = select(socket_fd + 1, readfd, writefd, NULL, &timeout);
return rc;
}
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session = NULL;
LIBSSH2_CHANNEL *channel;
const char *username = "username";
const char *password = "password";
const char *loclfile = "scp_write.c";
const char *scppath = "/tmp/TEST";
FILE *local;
int rc;
char mem[1024*100];
size_t nread;
char *ptr;
struct stat fileinfo;
time_t start;
long total = 0;
int duration;
size_t prev;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
loclfile = argv[4];
}
if(argc > 5) {
scppath = argv[5];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
local = fopen(loclfile, "rb");
if(!local) {
fprintf(stderr, "Can't local file %s\n", loclfile);
return -1;
}
stat(loclfile, &fileinfo);
/* Ultra basic "connect to port 22 on localhost"
* Your code is responsible for creating the socket establishing the
* connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* Since we have set non-blocking, tell libssh2 we are non-blocking */
libssh2_session_set_blocking(session, 0);
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
while((rc = libssh2_session_handshake(session, sock))
== LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(auth_pw) {
/* We could authenticate via password */
while((rc = libssh2_userauth_password(session, username, password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
#define HOME "/home/username/"
while((rc = libssh2_userauth_publickey_fromfile(session, username,
HOME ".ssh/id_rsa.pub",
HOME ".ssh/id_rsa",
password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
/* Send a file via scp. The mode parameter must only have permissions! */
do {
channel = libssh2_scp_send(session, scppath, fileinfo.st_mode & 0777,
(unsigned long)fileinfo.st_size);
if((!channel) && (libssh2_session_last_errno(session) !=
LIBSSH2_ERROR_EAGAIN)) {
char *err_msg;
libssh2_session_last_error(session, &err_msg, NULL, 0);
fprintf(stderr, "%s\n", err_msg);
goto shutdown;
}
} while(!channel);
fprintf(stderr, "SCP session waiting to send file\n");
start = time(NULL);
do {
nread = fread(mem, 1, sizeof(mem), local);
if(nread <= 0) {
/* end of file */
break;
}
ptr = mem;
total += nread;
prev = 0;
do {
while((rc = libssh2_channel_write(channel, ptr, nread)) ==
LIBSSH2_ERROR_EAGAIN) {
waitsocket(sock, session);
prev = 0;
}
if(rc < 0) {
fprintf(stderr, "ERROR %d total %ld / %d prev %d\n", rc,
total, (int)nread, (int)prev);
break;
}
else {
prev = nread;
/* rc indicates how many bytes were written this time */
nread -= rc;
ptr += rc;
}
} while(nread);
} while(!nread); /* only continue if nread was drained */
duration = (int)(time(NULL)-start);
fprintf(stderr, "%ld bytes in %d seconds makes %.1f bytes/sec\n",
total, duration, total/(double)duration);
fprintf(stderr, "Sending EOF\n");
while(libssh2_channel_send_eof(channel) == LIBSSH2_ERROR_EAGAIN);
fprintf(stderr, "Waiting for EOF\n");
while(libssh2_channel_wait_eof(channel) == LIBSSH2_ERROR_EAGAIN);
fprintf(stderr, "Waiting for channel to close\n");
while(libssh2_channel_wait_closed(channel) == LIBSSH2_ERROR_EAGAIN);
libssh2_channel_free(channel);
channel = NULL;
shutdown:
while(libssh2_session_disconnect(session,
"Normal Shutdown,") ==
LIBSSH2_ERROR_EAGAIN);
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/sftp_write.c | /*
* Sample showing how to do SFTP write transfers.
*
* The sample code has default values for host name, user name, password
* and path to copy, but you can specify them on the command line like:
*
* "sftp 192.168.0.1 user password sftp_write.c /tmp/secrets"
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
const char *username = "username";
const char *password = "password";
const char *loclfile = "sftp_write.c";
const char *sftppath = "/tmp/TEST";
int rc;
FILE *local;
LIBSSH2_SFTP *sftp_session;
LIBSSH2_SFTP_HANDLE *sftp_handle;
char mem[1024*100];
size_t nread;
char *ptr;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
loclfile = argv[4];
}
if(argc > 5) {
sftppath = argv[5];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
local = fopen(loclfile, "rb");
if(!local) {
fprintf(stderr, "Can't open local file %s\n", loclfile);
return -1;
}
/*
* The application code is responsible for creating the socket
* and establishing the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* Since we have set non-blocking, tell libssh2 we are blocking */
libssh2_session_set_blocking(session, 1);
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
rc = libssh2_session_handshake(session, sock);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(auth_pw) {
/* We could authenticate via password */
if(libssh2_userauth_password(session, username, password)) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
const char *pubkey = "/home/username/.ssh/id_rsa.pub";
const char *privkey = "/home/username/.ssh/id_rsa.pub";
if(libssh2_userauth_publickey_fromfile(session, username,
pubkey, privkey,
password)) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
fprintf(stderr, "libssh2_sftp_init()!\n");
sftp_session = libssh2_sftp_init(session);
if(!sftp_session) {
fprintf(stderr, "Unable to init SFTP session\n");
goto shutdown;
}
fprintf(stderr, "libssh2_sftp_open()!\n");
/* Request a file via SFTP */
sftp_handle =
libssh2_sftp_open(sftp_session, sftppath,
LIBSSH2_FXF_WRITE|LIBSSH2_FXF_CREAT|LIBSSH2_FXF_TRUNC,
LIBSSH2_SFTP_S_IRUSR|LIBSSH2_SFTP_S_IWUSR|
LIBSSH2_SFTP_S_IRGRP|LIBSSH2_SFTP_S_IROTH);
if(!sftp_handle) {
fprintf(stderr, "Unable to open file with SFTP\n");
goto shutdown;
}
fprintf(stderr, "libssh2_sftp_open() is done, now send data!\n");
do {
nread = fread(mem, 1, sizeof(mem), local);
if(nread <= 0) {
/* end of file */
break;
}
ptr = mem;
do {
/* write data in a loop until we block */
rc = libssh2_sftp_write(sftp_handle, ptr, nread);
if(rc < 0)
break;
ptr += rc;
nread -= rc;
} while(nread);
} while(rc > 0);
libssh2_sftp_close(sftp_handle);
libssh2_sftp_shutdown(sftp_session);
shutdown:
libssh2_session_disconnect(session,
"Normal Shutdown, Thank you for playing");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
if(local)
fclose(local);
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/sftp_write_sliding.c | /*
* Sample showing how to do SFTP non-blocking write transfers.
*
* The sample code has default values for host name, user name, password
* and path to copy, but you can specify them on the command line like:
*
* "sftp 192.168.0.1 user password file /tmp/storehere"
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#include <time.h>
static int waitsocket(int socket_fd, LIBSSH2_SESSION *session)
{
struct timeval timeout;
int rc;
fd_set fd;
fd_set *writefd = NULL;
fd_set *readfd = NULL;
int dir;
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fd);
FD_SET(socket_fd, &fd);
/* now make sure we wait in the correct direction */
dir = libssh2_session_block_directions(session);
if(dir & LIBSSH2_SESSION_BLOCK_INBOUND)
readfd = &fd;
if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND)
writefd = &fd;
rc = select(socket_fd + 1, readfd, writefd, NULL, &timeout);
return rc;
}
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
const char *username = "username";
const char *password = "password";
const char *loclfile = "sftp_write_nonblock.c";
const char *sftppath = "/tmp/sftp_write_nonblock.c";
int rc;
FILE *local;
LIBSSH2_SFTP *sftp_session;
LIBSSH2_SFTP_HANDLE *sftp_handle;
char mem[1024 * 1000];
size_t nread;
size_t memuse;
time_t start;
long total = 0;
int duration;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
loclfile = argv[4];
}
if(argc > 5) {
sftppath = argv[5];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
local = fopen(loclfile, "rb");
if(!local) {
fprintf(stderr, "Can't open local file %s\n", loclfile);
return -1;
}
/*
* The application code is responsible for creating the socket
* and establishing the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* Since we have set non-blocking, tell libssh2 we are non-blocking */
libssh2_session_set_blocking(session, 0);
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
while((rc = libssh2_session_handshake(session, sock))
== LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do is
* check the hostkey's fingerprint against our known hosts Your app may
* have it hard coded, may go to a file, may present it to the user,
* that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(auth_pw) {
/* We could authenticate via password */
while((rc = libssh2_userauth_password(session, username, password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
#define PUBKEY "/home/username/.ssh/id_rsa.pub"
#define PRIVKEY "/home/username/.ssh/id_rsa"
while((rc = libssh2_userauth_publickey_fromfile(session, username,
PUBKEY, PRIVKEY,
password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
fprintf(stderr, "libssh2_sftp_init()!\n");
do {
sftp_session = libssh2_sftp_init(session);
if(!sftp_session &&
(libssh2_session_last_errno(session) != LIBSSH2_ERROR_EAGAIN)) {
fprintf(stderr, "Unable to init SFTP session\n");
goto shutdown;
}
} while(!sftp_session);
fprintf(stderr, "libssh2_sftp_open()!\n");
/* Request a file via SFTP */
do {
sftp_handle =
libssh2_sftp_open(sftp_session, sftppath,
LIBSSH2_FXF_WRITE|LIBSSH2_FXF_CREAT|
LIBSSH2_FXF_TRUNC,
LIBSSH2_SFTP_S_IRUSR|LIBSSH2_SFTP_S_IWUSR|
LIBSSH2_SFTP_S_IRGRP|LIBSSH2_SFTP_S_IROTH);
if(!sftp_handle &&
(libssh2_session_last_errno(session) != LIBSSH2_ERROR_EAGAIN)) {
fprintf(stderr, "Unable to open file with SFTP\n");
goto shutdown;
}
} while(!sftp_handle);
fprintf(stderr, "libssh2_sftp_open() is done, now send data!\n");
start = time(NULL);
memuse = 0; /* it starts blank */
do {
nread = fread(&mem[memuse], 1, sizeof(mem)-memuse, local);
if(nread <= 0) {
/* end of file */
if(memuse > 0)
/* the previous sending is not finished */
nread = 0;
else
break;
}
memuse += nread;
total += nread;
/* write data in a loop until we block */
while((rc = libssh2_sftp_write(sftp_handle, mem, memuse)) ==
LIBSSH2_ERROR_EAGAIN) {
waitsocket(sock, session);
}
if(rc < 0)
break;
if(memuse - rc) {
/* make room for more data at the end of the buffer */
memmove(&mem[0], &mem[rc], memuse - rc);
memuse -= rc;
}
else
/* 'mem' was consumed fully */
memuse = 0;
} while(rc > 0);
duration = (int)(time(NULL)-start);
fprintf(stderr, "%ld bytes in %d seconds makes %.1f bytes/sec\n",
total, duration, total/(double)duration);
fclose(local);
libssh2_sftp_close(sftp_handle);
libssh2_sftp_shutdown(sftp_session);
shutdown:
while(libssh2_session_disconnect(session, "Normal Shutdown")
== LIBSSH2_ERROR_EAGAIN);
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/example/sftpdir_nonblock.c | /*
* Sample doing an SFTP directory listing.
*
* The sample code has default values for host name, user name, password and
* path, but you can specify them on the command line like:
*
* "sftpdir 192.168.0.1 user password /tmp/secretdir"
*/
#include "libssh2_config.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
# ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#ifdef WIN32
#define __FILESIZE "I64"
#else
#define __FILESIZE "llu"
#endif
int main(int argc, char *argv[])
{
unsigned long hostaddr;
int sock, i, auth_pw = 1;
struct sockaddr_in sin;
const char *fingerprint;
LIBSSH2_SESSION *session;
const char *username = "username";
const char *password = "password";
const char *sftppath = "/tmp/secretdir";
const char *pubkey = "/home/username/.ssh/id_rsa.pub";
const char *privkey = "/home/username/.ssh/id_rsa";
int rc;
LIBSSH2_SFTP *sftp_session;
LIBSSH2_SFTP_HANDLE *sftp_handle;
#ifdef WIN32
WSADATA wsadata;
int err;
err = WSAStartup(MAKEWORD(2, 0), &wsadata);
if(err != 0) {
fprintf(stderr, "WSAStartup failed with error: %d\n", err);
return 1;
}
#endif
if(argc > 1) {
hostaddr = inet_addr(argv[1]);
}
else {
hostaddr = htonl(0x7F000001);
}
if(argc > 2) {
username = argv[2];
}
if(argc > 3) {
password = argv[3];
}
if(argc > 4) {
sftppath = argv[4];
}
rc = libssh2_init(0);
if(rc != 0) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
return 1;
}
/*
* The application code is responsible for creating the socket
* and establishing the connection
*/
sock = socket(AF_INET, SOCK_STREAM, 0);
sin.sin_family = AF_INET;
sin.sin_port = htons(22);
sin.sin_addr.s_addr = hostaddr;
if(connect(sock, (struct sockaddr*)(&sin),
sizeof(struct sockaddr_in)) != 0) {
fprintf(stderr, "failed to connect!\n");
return -1;
}
/* Create a session instance
*/
session = libssh2_session_init();
if(!session)
return -1;
/* Since we have set non-blocking, tell libssh2 we are non-blocking */
libssh2_session_set_blocking(session, 0);
/* ... start it up. This will trade welcome banners, exchange keys,
* and setup crypto, compression, and MAC layers
*/
while((rc = libssh2_session_handshake(session, sock)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
return -1;
}
/* At this point we havn't yet authenticated. The first thing to do
* is check the hostkey's fingerprint against our known hosts Your app
* may have it hard coded, may go to a file, may present it to the
* user, that's your call
*/
fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
fprintf(stderr, "Fingerprint: ");
for(i = 0; i < 20; i++) {
fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
}
fprintf(stderr, "\n");
if(auth_pw) {
/* We could authenticate via password */
while((rc = libssh2_userauth_password(session, username, password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "Authentication by password failed.\n");
goto shutdown;
}
}
else {
/* Or by public key */
while((rc = libssh2_userauth_publickey_fromfile(session, username,
pubkey, privkey,
password)) ==
LIBSSH2_ERROR_EAGAIN);
if(rc) {
fprintf(stderr, "\tAuthentication by public key failed\n");
goto shutdown;
}
}
fprintf(stderr, "libssh2_sftp_init()!\n");
do {
sftp_session = libssh2_sftp_init(session);
if((!sftp_session) && (libssh2_session_last_errno(session) !=
LIBSSH2_ERROR_EAGAIN)) {
fprintf(stderr, "Unable to init SFTP session\n");
goto shutdown;
}
} while(!sftp_session);
fprintf(stderr, "libssh2_sftp_opendir()!\n");
/* Request a dir listing via SFTP */
do {
sftp_handle = libssh2_sftp_opendir(sftp_session, sftppath);
if((!sftp_handle) && (libssh2_session_last_errno(session) !=
LIBSSH2_ERROR_EAGAIN)) {
fprintf(stderr, "Unable to open dir with SFTP\n");
goto shutdown;
}
} while(!sftp_handle);
fprintf(stderr, "libssh2_sftp_opendir() is done, now receive listing!\n");
do {
char mem[512];
LIBSSH2_SFTP_ATTRIBUTES attrs;
/* loop until we fail */
while((rc = libssh2_sftp_readdir(sftp_handle, mem, sizeof(mem),
&attrs)) == LIBSSH2_ERROR_EAGAIN) {
;
}
if(rc > 0) {
/* rc is the length of the file name in the mem
buffer */
if(attrs.flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) {
/* this should check what permissions it
is and print the output accordingly */
printf("--fix----- ");
}
else {
printf("---------- ");
}
if(attrs.flags & LIBSSH2_SFTP_ATTR_UIDGID) {
printf("%4d %4d ", (int) attrs.uid, (int) attrs.gid);
}
else {
printf(" - - ");
}
if(attrs.flags & LIBSSH2_SFTP_ATTR_SIZE) {
printf("%8" __FILESIZE " ", attrs.filesize);
}
printf("%s\n", mem);
}
else if(rc == LIBSSH2_ERROR_EAGAIN) {
/* blocking */
fprintf(stderr, "Blocking\n");
}
else {
break;
}
} while(1);
libssh2_sftp_closedir(sftp_handle);
libssh2_sftp_shutdown(sftp_session);
shutdown:
libssh2_session_disconnect(session, "Normal Shutdown");
libssh2_session_free(session);
#ifdef WIN32
closesocket(sock);
#else
close(sock);
#endif
fprintf(stderr, "all done\n");
libssh2_exit();
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/nw/keepscreen.c | /* Simple _NonAppStop() implementation which can be linked to your
* NLM in order to keep the screen open when the NLM terminates
* (the good old clib behaviour).
* You dont have to call it, its done automatically from LibC.
*
* 2004-Aug-11 by Guenter Knauf
*
* URL: http://www.gknw.net/development/mk_nlm/
*/
#include <stdio.h>
#include <screen.h>
void _NonAppStop()
{
uint16_t row, col;
GetScreenSize(&row, &col);
gotorowcol(row-1, 0);
/* pressanykey(); */
printf("<Press any key to close screen> ");
getcharacter();
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/nw/nwlib.c | /*********************************************************************
* Universal NetWare library stub. *
* written by Ulrich Neuman and given to OpenSource copyright-free. *
* Extended for CLIB support by Guenter Knauf. *
*********************************************************************/
#ifdef NETWARE /* Novell NetWare */
#include <stdlib.h>
#ifdef __NOVELL_LIBC__
/* For native LibC-based NLM we need to register as a real lib. */
#include <errno.h>
#include <string.h>
#include <library.h>
#include <netware.h>
#include <screen.h>
#include <nks/thread.h>
#include <nks/synch.h>
typedef struct
{
int _errno;
void *twentybytes;
} libthreaddata_t;
typedef struct
{
int x;
int y;
int z;
void *tenbytes;
NXKey_t perthreadkey; /* if -1, no key obtained... */
NXMutex_t *lock;
} libdata_t;
int gLibId = -1;
void *gLibHandle = (void *) NULL;
rtag_t gAllocTag = (rtag_t) NULL;
NXMutex_t *gLibLock = (NXMutex_t *) NULL;
/* internal library function prototypes... */
int DisposeLibraryData ( void * );
void DisposeThreadData ( void * );
int GetOrSetUpData ( int id, libdata_t **data, libthreaddata_t **threaddata );
int _NonAppStart( void *NLMHandle,
void *errorScreen,
const char *cmdLine,
const char *loadDirPath,
size_t uninitializedDataLength,
void *NLMFileHandle,
int (*readRoutineP)( int conn,
void *fileHandle, size_t offset,
size_t nbytes,
size_t *bytesRead,
void *buffer ),
size_t customDataOffset,
size_t customDataSize,
int messageCount,
const char **messages )
{
NX_LOCK_INFO_ALLOC(liblock, "Per-Application Data Lock", 0);
#ifndef __GNUC__
#pragma unused(cmdLine)
#pragma unused(loadDirPath)
#pragma unused(uninitializedDataLength)
#pragma unused(NLMFileHandle)
#pragma unused(readRoutineP)
#pragma unused(customDataOffset)
#pragma unused(customDataSize)
#pragma unused(messageCount)
#pragma unused(messages)
#endif
/*
** Here we process our command line, post errors (to the error screen),
** perform initializations and anything else we need to do before being able
** to accept calls into us. If we succeed, we return non-zero and the NetWare
** Loader will leave us up, otherwise we fail to load and get dumped.
*/
gAllocTag = AllocateResourceTag(NLMHandle,
"<library-name> memory allocations", AllocSignature);
if (!gAllocTag) {
OutputToScreen(errorScreen, "Unable to allocate resource tag for "
"library memory allocations.\n");
return -1;
}
gLibId = register_library(DisposeLibraryData);
if (gLibId < -1) {
OutputToScreen(errorScreen, "Unable to register library with kernel.\n");
return -1;
}
gLibHandle = NLMHandle;
gLibLock = NXMutexAlloc(0, 0, &liblock);
if (!gLibLock) {
OutputToScreen(errorScreen, "Unable to allocate library data lock.\n");
return -1;
}
return 0;
}
/*
** Here we clean up any resources we allocated. Resource tags is a big part
** of what we created, but NetWare doesn't ask us to free those.
*/
void _NonAppStop( void )
{
(void) unregister_library(gLibId);
NXMutexFree(gLibLock);
}
/*
** This function cannot be the first in the file for if the file is linked
** first, then the check-unload function's offset will be nlmname.nlm+0
** which is how to tell that there isn't one. When the check function is
** first in the linked objects, it is ambiguous. For this reason, we will
** put it inside this file after the stop function.
**
** Here we check to see if it's alright to ourselves to be unloaded. If not,
** we return a non-zero value. Right now, there isn't any reason not to allow
** it.
*/
int _NonAppCheckUnload( void )
{
return 0;
}
int GetOrSetUpData(int id, libdata_t **appData, libthreaddata_t **threadData)
{
int err;
libdata_t *app_data;
libthreaddata_t *thread_data;
NXKey_t key;
NX_LOCK_INFO_ALLOC(liblock, "Application Data Lock", 0);
err = 0;
thread_data = (libthreaddata_t *) NULL;
/*
** Attempt to get our data for the application calling us. This is where we
** store whatever application-specific information we need to carry in support
** of calling applications.
*/
app_data = (libdata_t *) get_app_data(id);
if (!app_data) {
/*
** This application hasn't called us before; set up application AND per-thread
** data. Of course, just in case a thread from this same application is calling
** us simultaneously, we better lock our application data-creation mutex. We
** also need to recheck for data after we acquire the lock because WE might be
** that other thread that was too late to create the data and the first thread
** in will have created it.
*/
NXLock(gLibLock);
if (!(app_data = (libdata_t *) get_app_data(id))) {
app_data = (libdata_t *) malloc(sizeof(libdata_t));
if (app_data) {
memset(app_data, 0, sizeof(libdata_t));
app_data->tenbytes = malloc(10);
app_data->lock = NXMutexAlloc(0, 0, &liblock);
if (!app_data->tenbytes || !app_data->lock) {
if (app_data->lock)
NXMutexFree(app_data->lock);
free(app_data);
app_data = (libdata_t *) NULL;
err = ENOMEM;
}
if (app_data) {
/*
** Here we burn in the application data that we were trying to get by calling
** get_app_data(). Next time we call the first function, we'll get this data
** we're just now setting. We also go on here to establish the per-thread data
** for the calling thread, something we'll have to do on each application
** thread the first time it calls us.
*/
err = set_app_data(gLibId, app_data);
if (err) {
free(app_data);
app_data = (libdata_t *) NULL;
err = ENOMEM;
}
else {
/* create key for thread-specific data... */
err = NXKeyCreate(DisposeThreadData, (void *) NULL, &key);
if (err) /* (no more keys left?) */
key = -1;
app_data->perthreadkey = key;
}
}
}
}
NXUnlock(gLibLock);
}
if (app_data) {
key = app_data->perthreadkey;
if (key != -1 /* couldn't create a key? no thread data */
&& !(err = NXKeyGetValue(key, (void **) &thread_data))
&& !thread_data) {
/*
** Allocate the per-thread data for the calling thread. Regardless of whether
** there was already application data or not, this may be the first call by a
** a new thread. The fact that we allocation 20 bytes on a pointer is not very
** important, this just helps to demonstrate that we can have arbitrarily
** complex per-thread data.
*/
thread_data = (libthreaddata_t *) malloc(sizeof(libthreaddata_t));
if (thread_data) {
thread_data->_errno = 0;
thread_data->twentybytes = malloc(20);
if (!thread_data->twentybytes) {
free(thread_data);
thread_data = (libthreaddata_t *) NULL;
err = ENOMEM;
}
if ((err = NXKeySetValue(key, thread_data))) {
free(thread_data->twentybytes);
free(thread_data);
thread_data = (libthreaddata_t *) NULL;
}
}
}
}
if (appData)
*appData = app_data;
if (threadData)
*threadData = thread_data;
return err;
}
int DisposeLibraryData( void *data )
{
if (data) {
void *tenbytes = ((libdata_t *) data)->tenbytes;
if (tenbytes)
free(tenbytes);
free(data);
}
return 0;
}
void DisposeThreadData( void *data )
{
if (data) {
void *twentybytes = ((libthreaddata_t *) data)->twentybytes;
if (twentybytes)
free(twentybytes);
free(data);
}
}
#else /* __NOVELL_LIBC__ */
/* For native CLib-based NLM seems we can do a bit more simple. */
#include <nwthread.h>
int main ( void )
{
/* initialize any globals here... */
/* do this if any global initializing was done
SynchronizeStart();
*/
ExitThread (TSR_THREAD, 0);
return 0;
}
#endif /* __NOVELL_LIBC__ */
#endif /* NETWARE */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/scp.c | /* Copyright (c) 2009-2019 by Daniel Stenberg
* Copyright (c) 2004-2008, Sara Golemon <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include <errno.h>
#include <stdlib.h>
#include "channel.h"
#include "session.h"
/* Max. length of a quoted string after libssh2_shell_quotearg() processing */
#define _libssh2_shell_quotedsize(s) (3 * strlen(s) + 2)
/*
This function quotes a string in a way suitable to be used with a
shell, e.g. the file name
one two
becomes
'one two'
The resulting output string is crafted in a way that makes it usable
with the two most common shell types: Bourne Shell derived shells
(sh, ksh, ksh93, bash, zsh) and C-Shell derivates (csh, tcsh).
The following special cases are handled:
o If the string contains an apostrophy itself, the apostrophy
character is written in quotation marks, e.g. "'".
The shell cannot handle the syntax 'doesn\'t', so we close the
current argument word, add the apostrophe in quotation marks "",
and open a new argument word instead (_ indicate the input
string characters):
_____ _ _
'doesn' "'" 't'
Sequences of apostrophes are combined in one pair of quotation marks:
a'''b
becomes
_ ___ _
'a'"'''"'b'
o If the string contains an exclamation mark (!), the C-Shell
interprets it as an event number. Using \! (not within quotation
marks or single quotation marks) is a mechanism understood by
both Bourne Shell and C-Shell.
If a quotation was already started, the argument word is closed
first:
a!b
become
_ _ _
'a'\!'b'
The result buffer must be large enough for the expanded result. A
bad case regarding expansion is alternating characters and
apostrophes:
a'b'c'd' (length 8) gets converted to
'a'"'"'b'"'"'c'"'"'d'"'" (length 24)
This is the worst case.
Maximum length of the result:
1 + 6 * (length(input) + 1) / 2) + 1
=> 3 * length(input) + 2
Explanation:
o leading apostrophe
o one character / apostrophe pair (two characters) can get
represented as 6 characters: a' -> a'"'"'
o String terminator (+1)
A result buffer three times the size of the input buffer + 2
characters should be safe.
References:
o csh-compatible quotation (special handling for '!' etc.), see
http://www.grymoire.com/Unix/Csh.html#toc-uh-10
Return value:
Length of the resulting string (not counting the terminating '\0'),
or 0 in case of errors, e.g. result buffer too small
Note: this function could possible be used elsewhere within libssh2, but
until then it is kept static and in this source file.
*/
static unsigned
shell_quotearg(const char *path, unsigned char *buf,
unsigned bufsize)
{
const char *src;
unsigned char *dst, *endp;
/*
* Processing States:
* UQSTRING: unquoted string: ... -- used for quoting exclamation
* marks. This is the initial state
* SQSTRING: single-quoted-string: '... -- any character may follow
* QSTRING: quoted string: "... -- only apostrophes may follow
*/
enum { UQSTRING, SQSTRING, QSTRING } state = UQSTRING;
endp = &buf[bufsize];
src = path;
dst = buf;
while(*src && dst < endp - 1) {
switch(*src) {
/*
* Special handling for apostrophe.
* An apostrophe is always written in quotation marks, e.g.
* ' -> "'".
*/
case '\'':
switch(state) {
case UQSTRING: /* Unquoted string */
if(dst + 1 >= endp)
return 0;
*dst++ = '"';
break;
case QSTRING: /* Continue quoted string */
break;
case SQSTRING: /* Close single quoted string */
if(dst + 2 >= endp)
return 0;
*dst++ = '\'';
*dst++ = '"';
break;
default:
break;
}
state = QSTRING;
break;
/*
* Special handling for exclamation marks. CSH interprets
* exclamation marks even when quoted with apostrophes. We convert
* it to the plain string \!, because both Bourne Shell and CSH
* interpret that as a verbatim exclamation mark.
*/
case '!':
switch(state) {
case UQSTRING:
if(dst + 1 >= endp)
return 0;
*dst++ = '\\';
break;
case QSTRING:
if(dst + 2 >= endp)
return 0;
*dst++ = '"'; /* Closing quotation mark */
*dst++ = '\\';
break;
case SQSTRING: /* Close single quoted string */
if(dst + 2 >= endp)
return 0;
*dst++ = '\'';
*dst++ = '\\';
break;
default:
break;
}
state = UQSTRING;
break;
/*
* Ordinary character: prefer single-quoted string
*/
default:
switch(state) {
case UQSTRING:
if(dst + 1 >= endp)
return 0;
*dst++ = '\'';
break;
case QSTRING:
if(dst + 2 >= endp)
return 0;
*dst++ = '"'; /* Closing quotation mark */
*dst++ = '\'';
break;
case SQSTRING: /* Continue single quoted string */
break;
default:
break;
}
state = SQSTRING; /* Start single-quoted string */
break;
}
if(dst + 1 >= endp)
return 0;
*dst++ = *src++;
}
switch(state) {
case UQSTRING:
break;
case QSTRING: /* Close quoted string */
if(dst + 1 >= endp)
return 0;
*dst++ = '"';
break;
case SQSTRING: /* Close single quoted string */
if(dst + 1 >= endp)
return 0;
*dst++ = '\'';
break;
default:
break;
}
if(dst + 1 >= endp)
return 0;
*dst = '\0';
/* The result cannot be larger than 3 * strlen(path) + 2 */
/* assert((dst - buf) <= (3 * (src - path) + 2)); */
return dst - buf;
}
/*
* scp_recv
*
* Open a channel and request a remote file via SCP
*
*/
static LIBSSH2_CHANNEL *
scp_recv(LIBSSH2_SESSION * session, const char *path, libssh2_struct_stat * sb)
{
int cmd_len;
int rc;
int tmp_err_code;
const char *tmp_err_msg;
if(session->scpRecv_state == libssh2_NB_state_idle) {
session->scpRecv_mode = 0;
session->scpRecv_size = 0;
session->scpRecv_mtime = 0;
session->scpRecv_atime = 0;
session->scpRecv_command_len =
_libssh2_shell_quotedsize(path) + sizeof("scp -f ") + (sb?1:0);
session->scpRecv_command =
LIBSSH2_ALLOC(session, session->scpRecv_command_len);
if(!session->scpRecv_command) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate a command buffer for "
"SCP session");
return NULL;
}
snprintf((char *)session->scpRecv_command,
session->scpRecv_command_len,
"scp -%sf ", sb?"p":"");
cmd_len = strlen((char *)session->scpRecv_command);
cmd_len += shell_quotearg(path,
&session->scpRecv_command[cmd_len],
session->scpRecv_command_len - cmd_len);
/* the command to exec should _not_ be NUL-terminated */
session->scpRecv_command_len = cmd_len;
_libssh2_debug(session, LIBSSH2_TRACE_SCP,
"Opening channel for SCP receive");
session->scpRecv_state = libssh2_NB_state_created;
}
if(session->scpRecv_state == libssh2_NB_state_created) {
/* Allocate a channel */
session->scpRecv_channel =
_libssh2_channel_open(session, "session",
sizeof("session") - 1,
LIBSSH2_CHANNEL_WINDOW_DEFAULT,
LIBSSH2_CHANNEL_PACKET_DEFAULT, NULL,
0);
if(!session->scpRecv_channel) {
if(libssh2_session_last_errno(session) !=
LIBSSH2_ERROR_EAGAIN) {
LIBSSH2_FREE(session, session->scpRecv_command);
session->scpRecv_command = NULL;
session->scpRecv_state = libssh2_NB_state_idle;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block starting up channel");
}
return NULL;
}
session->scpRecv_state = libssh2_NB_state_sent;
}
if(session->scpRecv_state == libssh2_NB_state_sent) {
/* Request SCP for the desired file */
rc = _libssh2_channel_process_startup(session->scpRecv_channel, "exec",
sizeof("exec") - 1,
(char *)session->scpRecv_command,
session->scpRecv_command_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block requesting SCP startup");
return NULL;
}
else if(rc) {
LIBSSH2_FREE(session, session->scpRecv_command);
session->scpRecv_command = NULL;
goto scp_recv_error;
}
LIBSSH2_FREE(session, session->scpRecv_command);
session->scpRecv_command = NULL;
_libssh2_debug(session, LIBSSH2_TRACE_SCP, "Sending initial wakeup");
/* SCP ACK */
session->scpRecv_response[0] = '\0';
session->scpRecv_state = libssh2_NB_state_sent1;
}
if(session->scpRecv_state == libssh2_NB_state_sent1) {
rc = _libssh2_channel_write(session->scpRecv_channel, 0,
session->scpRecv_response, 1);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block sending initial wakeup");
return NULL;
}
else if(rc != 1) {
goto scp_recv_error;
}
/* Parse SCP response */
session->scpRecv_response_len = 0;
session->scpRecv_state = libssh2_NB_state_sent2;
}
if((session->scpRecv_state == libssh2_NB_state_sent2)
|| (session->scpRecv_state == libssh2_NB_state_sent3)) {
while(sb && (session->scpRecv_response_len <
LIBSSH2_SCP_RESPONSE_BUFLEN)) {
unsigned char *s, *p;
if(session->scpRecv_state == libssh2_NB_state_sent2) {
rc = _libssh2_channel_read(session->scpRecv_channel, 0,
(char *) session->
scpRecv_response +
session->scpRecv_response_len, 1);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block waiting for SCP response");
return NULL;
}
else if(rc < 0) {
/* error, give up */
_libssh2_error(session, rc, "Failed reading SCP response");
goto scp_recv_error;
}
else if(rc == 0)
goto scp_recv_empty_channel;
session->scpRecv_response_len++;
if(session->scpRecv_response[0] != 'T') {
size_t err_len;
char *err_msg;
/* there can be
01 for warnings
02 for errors
The following string MUST be newline terminated
*/
err_len =
_libssh2_channel_packet_data_len(session->
scpRecv_channel, 0);
err_msg = LIBSSH2_ALLOC(session, err_len + 1);
if(!err_msg) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Failed to get memory ");
goto scp_recv_error;
}
/* Read the remote error message */
(void)_libssh2_channel_read(session->scpRecv_channel, 0,
err_msg, err_len);
/* If it failed for any reason, we ignore it anyway. */
/* zero terminate the error */
err_msg[err_len] = 0;
_libssh2_debug(session, LIBSSH2_TRACE_SCP,
"got %02x %s", session->scpRecv_response[0],
err_msg);
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Failed to recv file");
LIBSSH2_FREE(session, err_msg);
goto scp_recv_error;
}
if((session->scpRecv_response_len > 1) &&
((session->
scpRecv_response[session->scpRecv_response_len - 1] <
'0')
|| (session->
scpRecv_response[session->scpRecv_response_len - 1] >
'9'))
&& (session->
scpRecv_response[session->scpRecv_response_len - 1] !=
' ')
&& (session->
scpRecv_response[session->scpRecv_response_len - 1] !=
'\r')
&& (session->
scpRecv_response[session->scpRecv_response_len - 1] !=
'\n')) {
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid data in SCP response");
goto scp_recv_error;
}
if((session->scpRecv_response_len < 9)
|| (session->
scpRecv_response[session->scpRecv_response_len - 1] !=
'\n')) {
if(session->scpRecv_response_len ==
LIBSSH2_SCP_RESPONSE_BUFLEN) {
/* You had your chance */
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Unterminated response from "
"SCP server");
goto scp_recv_error;
}
/* Way too short to be an SCP response, or not done yet,
short circuit */
continue;
}
/* We're guaranteed not to go under response_len == 0 by the
logic above */
while((session->
scpRecv_response[session->scpRecv_response_len - 1] ==
'\r')
|| (session->
scpRecv_response[session->scpRecv_response_len -
1] == '\n'))
session->scpRecv_response_len--;
session->scpRecv_response[session->scpRecv_response_len] =
'\0';
if(session->scpRecv_response_len < 8) {
/* EOL came too soon */
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid response from SCP server, "
"too short");
goto scp_recv_error;
}
s = session->scpRecv_response + 1;
p = (unsigned char *) strchr((char *) s, ' ');
if(!p || ((p - s) <= 0)) {
/* No spaces or space in the wrong spot */
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid response from SCP server, "
"malformed mtime");
goto scp_recv_error;
}
*(p++) = '\0';
/* Make sure we don't get fooled by leftover values */
session->scpRecv_mtime = strtol((char *) s, NULL, 10);
s = (unsigned char *) strchr((char *) p, ' ');
if(!s || ((s - p) <= 0)) {
/* No spaces or space in the wrong spot */
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid response from SCP server, "
"malformed mtime.usec");
goto scp_recv_error;
}
/* Ignore mtime.usec */
s++;
p = (unsigned char *) strchr((char *) s, ' ');
if(!p || ((p - s) <= 0)) {
/* No spaces or space in the wrong spot */
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid response from SCP server, "
"too short or malformed");
goto scp_recv_error;
}
*p = '\0';
/* Make sure we don't get fooled by leftover values */
session->scpRecv_atime = strtol((char *) s, NULL, 10);
/* SCP ACK */
session->scpRecv_response[0] = '\0';
session->scpRecv_state = libssh2_NB_state_sent3;
}
if(session->scpRecv_state == libssh2_NB_state_sent3) {
rc = _libssh2_channel_write(session->scpRecv_channel, 0,
session->scpRecv_response, 1);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block waiting to send SCP ACK");
return NULL;
}
else if(rc != 1) {
goto scp_recv_error;
}
_libssh2_debug(session, LIBSSH2_TRACE_SCP,
"mtime = %ld, atime = %ld",
session->scpRecv_mtime, session->scpRecv_atime);
/* We *should* check that atime.usec is valid, but why let
that stop use? */
break;
}
}
session->scpRecv_state = libssh2_NB_state_sent4;
}
if(session->scpRecv_state == libssh2_NB_state_sent4) {
session->scpRecv_response_len = 0;
session->scpRecv_state = libssh2_NB_state_sent5;
}
if((session->scpRecv_state == libssh2_NB_state_sent5)
|| (session->scpRecv_state == libssh2_NB_state_sent6)) {
while(session->scpRecv_response_len < LIBSSH2_SCP_RESPONSE_BUFLEN) {
char *s, *p, *e = NULL;
if(session->scpRecv_state == libssh2_NB_state_sent5) {
rc = _libssh2_channel_read(session->scpRecv_channel, 0,
(char *) session->
scpRecv_response +
session->scpRecv_response_len, 1);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block waiting for SCP response");
return NULL;
}
else if(rc < 0) {
/* error, bail out*/
_libssh2_error(session, rc, "Failed reading SCP response");
goto scp_recv_error;
}
else if(rc == 0)
goto scp_recv_empty_channel;
session->scpRecv_response_len++;
if(session->scpRecv_response[0] != 'C') {
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid response from SCP server");
goto scp_recv_error;
}
if((session->scpRecv_response_len > 1) &&
(session->
scpRecv_response[session->scpRecv_response_len - 1] !=
'\r')
&& (session->
scpRecv_response[session->scpRecv_response_len - 1] !=
'\n')
&&
(session->
scpRecv_response[session->scpRecv_response_len - 1]
< 32)) {
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid data in SCP response");
goto scp_recv_error;
}
if((session->scpRecv_response_len < 7)
|| (session->
scpRecv_response[session->scpRecv_response_len - 1] !=
'\n')) {
if(session->scpRecv_response_len ==
LIBSSH2_SCP_RESPONSE_BUFLEN) {
/* You had your chance */
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Unterminated response "
"from SCP server");
goto scp_recv_error;
}
/* Way too short to be an SCP response, or not done yet,
short circuit */
continue;
}
/* We're guaranteed not to go under response_len == 0 by the
logic above */
while((session->
scpRecv_response[session->scpRecv_response_len - 1] ==
'\r')
|| (session->
scpRecv_response[session->scpRecv_response_len -
1] == '\n')) {
session->scpRecv_response_len--;
}
session->scpRecv_response[session->scpRecv_response_len] =
'\0';
if(session->scpRecv_response_len < 6) {
/* EOL came too soon */
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid response from SCP server, "
"too short");
goto scp_recv_error;
}
s = (char *) session->scpRecv_response + 1;
p = strchr(s, ' ');
if(!p || ((p - s) <= 0)) {
/* No spaces or space in the wrong spot */
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid response from SCP server, "
"malformed mode");
goto scp_recv_error;
}
*(p++) = '\0';
/* Make sure we don't get fooled by leftover values */
session->scpRecv_mode = strtol(s, &e, 8);
if(e && *e) {
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid response from SCP server, "
"invalid mode");
goto scp_recv_error;
}
s = strchr(p, ' ');
if(!s || ((s - p) <= 0)) {
/* No spaces or space in the wrong spot */
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid response from SCP server, "
"too short or malformed");
goto scp_recv_error;
}
*s = '\0';
/* Make sure we don't get fooled by leftover values */
session->scpRecv_size = scpsize_strtol(p, &e, 10);
if(e && *e) {
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid response from SCP server, "
"invalid size");
goto scp_recv_error;
}
/* SCP ACK */
session->scpRecv_response[0] = '\0';
session->scpRecv_state = libssh2_NB_state_sent6;
}
if(session->scpRecv_state == libssh2_NB_state_sent6) {
rc = _libssh2_channel_write(session->scpRecv_channel, 0,
session->scpRecv_response, 1);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block sending SCP ACK");
return NULL;
}
else if(rc != 1) {
goto scp_recv_error;
}
_libssh2_debug(session, LIBSSH2_TRACE_SCP,
"mode = 0%lo size = %ld", session->scpRecv_mode,
session->scpRecv_size);
/* We *should* check that basename is valid, but why let that
stop us? */
break;
}
}
session->scpRecv_state = libssh2_NB_state_sent7;
}
if(sb) {
memset(sb, 0, sizeof(libssh2_struct_stat));
sb->st_mtime = session->scpRecv_mtime;
sb->st_atime = session->scpRecv_atime;
sb->st_size = session->scpRecv_size;
sb->st_mode = (unsigned short)session->scpRecv_mode;
}
session->scpRecv_state = libssh2_NB_state_idle;
return session->scpRecv_channel;
scp_recv_empty_channel:
/* the code only jumps here as a result of a zero read from channel_read()
so we check EOF status to avoid getting stuck in a loop */
if(libssh2_channel_eof(session->scpRecv_channel))
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Unexpected channel close");
else
return session->scpRecv_channel;
/* fall-through */
scp_recv_error:
tmp_err_code = session->err_code;
tmp_err_msg = session->err_msg;
while(libssh2_channel_free(session->scpRecv_channel) ==
LIBSSH2_ERROR_EAGAIN);
session->err_code = tmp_err_code;
session->err_msg = tmp_err_msg;
session->scpRecv_channel = NULL;
session->scpRecv_state = libssh2_NB_state_idle;
return NULL;
}
/*
* libssh2_scp_recv
*
* DEPRECATED
*
* Open a channel and request a remote file via SCP. This receives files
* larger than 2 GB, but is unable to report the proper size on platforms
* where the st_size member of struct stat is limited to 2 GB (e.g. windows).
*
*/
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_scp_recv(LIBSSH2_SESSION *session, const char *path, struct stat * sb)
{
LIBSSH2_CHANNEL *ptr;
/* scp_recv uses libssh2_struct_stat, so pass one if the caller gave us a
struct to populate... */
libssh2_struct_stat sb_intl;
libssh2_struct_stat *sb_ptr;
memset(&sb_intl, 0, sizeof(sb_intl));
sb_ptr = sb ? &sb_intl : NULL;
BLOCK_ADJUST_ERRNO(ptr, session, scp_recv(session, path, sb_ptr));
/* ...and populate the caller's with as much info as fits. */
if(sb) {
memset(sb, 0, sizeof(struct stat));
sb->st_mtime = sb_intl.st_mtime;
sb->st_atime = sb_intl.st_atime;
sb->st_size = (off_t)sb_intl.st_size;
sb->st_mode = sb_intl.st_mode;
}
return ptr;
}
/*
* libssh2_scp_recv2
*
* Open a channel and request a remote file via SCP. This supports files > 2GB
* on platforms that support it.
*
*/
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_scp_recv2(LIBSSH2_SESSION *session, const char *path,
libssh2_struct_stat *sb)
{
LIBSSH2_CHANNEL *ptr;
BLOCK_ADJUST_ERRNO(ptr, session, scp_recv(session, path, sb));
return ptr;
}
/*
* scp_send()
*
* Send a file using SCP
*
*/
static LIBSSH2_CHANNEL *
scp_send(LIBSSH2_SESSION * session, const char *path, int mode,
libssh2_int64_t size, time_t mtime, time_t atime)
{
int cmd_len;
int rc;
int tmp_err_code;
const char *tmp_err_msg;
if(session->scpSend_state == libssh2_NB_state_idle) {
session->scpSend_command_len =
_libssh2_shell_quotedsize(path) + sizeof("scp -t ") +
((mtime || atime)?1:0);
session->scpSend_command =
LIBSSH2_ALLOC(session, session->scpSend_command_len);
if(!session->scpSend_command) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate a command buffer for "
"SCP session");
return NULL;
}
snprintf((char *)session->scpSend_command,
session->scpSend_command_len,
"scp -%st ", (mtime || atime)?"p":"");
cmd_len = strlen((char *)session->scpSend_command);
cmd_len += shell_quotearg(path,
&session->scpSend_command[cmd_len],
session->scpSend_command_len - cmd_len);
/* the command to exec should _not_ be NUL-terminated */
session->scpSend_command_len = cmd_len;
_libssh2_debug(session, LIBSSH2_TRACE_SCP,
"Opening channel for SCP send");
/* Allocate a channel */
session->scpSend_state = libssh2_NB_state_created;
}
if(session->scpSend_state == libssh2_NB_state_created) {
session->scpSend_channel =
_libssh2_channel_open(session, "session", sizeof("session") - 1,
LIBSSH2_CHANNEL_WINDOW_DEFAULT,
LIBSSH2_CHANNEL_PACKET_DEFAULT, NULL, 0);
if(!session->scpSend_channel) {
if(libssh2_session_last_errno(session) != LIBSSH2_ERROR_EAGAIN) {
/* previous call set libssh2_session_last_error(), pass it
through */
LIBSSH2_FREE(session, session->scpSend_command);
session->scpSend_command = NULL;
session->scpSend_state = libssh2_NB_state_idle;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block starting up channel");
}
return NULL;
}
session->scpSend_state = libssh2_NB_state_sent;
}
if(session->scpSend_state == libssh2_NB_state_sent) {
/* Request SCP for the desired file */
rc = _libssh2_channel_process_startup(session->scpSend_channel, "exec",
sizeof("exec") - 1,
(char *)session->scpSend_command,
session->scpSend_command_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block requesting SCP startup");
return NULL;
}
else if(rc) {
/* previous call set libssh2_session_last_error(), pass it
through */
LIBSSH2_FREE(session, session->scpSend_command);
session->scpSend_command = NULL;
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Unknown error while getting error string");
goto scp_send_error;
}
LIBSSH2_FREE(session, session->scpSend_command);
session->scpSend_command = NULL;
session->scpSend_state = libssh2_NB_state_sent1;
}
if(session->scpSend_state == libssh2_NB_state_sent1) {
/* Wait for ACK */
rc = _libssh2_channel_read(session->scpSend_channel, 0,
(char *) session->scpSend_response, 1);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block waiting for response from remote");
return NULL;
}
else if(rc < 0) {
_libssh2_error(session, rc, "SCP failure");
goto scp_send_error;
}
else if(!rc)
/* remain in the same state */
goto scp_send_empty_channel;
else if(session->scpSend_response[0] != 0) {
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid ACK response from remote");
goto scp_send_error;
}
if(mtime || atime) {
/* Send mtime and atime to be used for file */
session->scpSend_response_len =
snprintf((char *) session->scpSend_response,
LIBSSH2_SCP_RESPONSE_BUFLEN, "T%ld 0 %ld 0\n",
(long)mtime, (long)atime);
_libssh2_debug(session, LIBSSH2_TRACE_SCP, "Sent %s",
session->scpSend_response);
}
session->scpSend_state = libssh2_NB_state_sent2;
}
/* Send mtime and atime to be used for file */
if(mtime || atime) {
if(session->scpSend_state == libssh2_NB_state_sent2) {
rc = _libssh2_channel_write(session->scpSend_channel, 0,
session->scpSend_response,
session->scpSend_response_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block sending time data for SCP file");
return NULL;
}
else if(rc != (int)session->scpSend_response_len) {
_libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send time data for SCP file");
goto scp_send_error;
}
session->scpSend_state = libssh2_NB_state_sent3;
}
if(session->scpSend_state == libssh2_NB_state_sent3) {
/* Wait for ACK */
rc = _libssh2_channel_read(session->scpSend_channel, 0,
(char *) session->scpSend_response, 1);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block waiting for response");
return NULL;
}
else if(rc < 0) {
_libssh2_error(session, rc, "SCP failure");
goto scp_send_error;
}
else if(!rc)
/* remain in the same state */
goto scp_send_empty_channel;
else if(session->scpSend_response[0] != 0) {
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid SCP ACK response");
goto scp_send_error;
}
session->scpSend_state = libssh2_NB_state_sent4;
}
}
else {
if(session->scpSend_state == libssh2_NB_state_sent2) {
session->scpSend_state = libssh2_NB_state_sent4;
}
}
if(session->scpSend_state == libssh2_NB_state_sent4) {
/* Send mode, size, and basename */
const char *base = strrchr(path, '/');
if(base)
base++;
else
base = path;
session->scpSend_response_len =
snprintf((char *) session->scpSend_response,
LIBSSH2_SCP_RESPONSE_BUFLEN, "C0%o %"
LIBSSH2_INT64_T_FORMAT " %s\n", mode,
size, base);
_libssh2_debug(session, LIBSSH2_TRACE_SCP, "Sent %s",
session->scpSend_response);
session->scpSend_state = libssh2_NB_state_sent5;
}
if(session->scpSend_state == libssh2_NB_state_sent5) {
rc = _libssh2_channel_write(session->scpSend_channel, 0,
session->scpSend_response,
session->scpSend_response_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block send core file data for SCP file");
return NULL;
}
else if(rc != (int)session->scpSend_response_len) {
_libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send core file data for SCP file");
goto scp_send_error;
}
session->scpSend_state = libssh2_NB_state_sent6;
}
if(session->scpSend_state == libssh2_NB_state_sent6) {
/* Wait for ACK */
rc = _libssh2_channel_read(session->scpSend_channel, 0,
(char *) session->scpSend_response, 1);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block waiting for response");
return NULL;
}
else if(rc < 0) {
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Invalid ACK response from remote");
goto scp_send_error;
}
else if(rc == 0)
goto scp_send_empty_channel;
else if(session->scpSend_response[0] != 0) {
size_t err_len;
char *err_msg;
err_len =
_libssh2_channel_packet_data_len(session->scpSend_channel, 0);
err_msg = LIBSSH2_ALLOC(session, err_len + 1);
if(!err_msg) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"failed to get memory");
goto scp_send_error;
}
/* Read the remote error message */
rc = _libssh2_channel_read(session->scpSend_channel, 0,
err_msg, err_len);
if(rc > 0) {
err_msg[err_len] = 0;
_libssh2_debug(session, LIBSSH2_TRACE_SCP,
"got %02x %s", session->scpSend_response[0],
err_msg);
}
LIBSSH2_FREE(session, err_msg);
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"failed to send file");
goto scp_send_error;
}
}
session->scpSend_state = libssh2_NB_state_idle;
return session->scpSend_channel;
scp_send_empty_channel:
/* the code only jumps here as a result of a zero read from channel_read()
so we check EOF status to avoid getting stuck in a loop */
if(libssh2_channel_eof(session->scpSend_channel)) {
_libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
"Unexpected channel close");
}
else
return session->scpSend_channel;
/* fall-through */
scp_send_error:
tmp_err_code = session->err_code;
tmp_err_msg = session->err_msg;
while(libssh2_channel_free(session->scpSend_channel) ==
LIBSSH2_ERROR_EAGAIN);
session->err_code = tmp_err_code;
session->err_msg = tmp_err_msg;
session->scpSend_channel = NULL;
session->scpSend_state = libssh2_NB_state_idle;
return NULL;
}
/*
* libssh2_scp_send_ex
*
* Send a file using SCP. Old API.
*/
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_scp_send_ex(LIBSSH2_SESSION *session, const char *path, int mode,
size_t size, long mtime, long atime)
{
LIBSSH2_CHANNEL *ptr;
BLOCK_ADJUST_ERRNO(ptr, session,
scp_send(session, path, mode, size,
(time_t)mtime, (time_t)atime));
return ptr;
}
/*
* libssh2_scp_send64
*
* Send a file using SCP
*/
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_scp_send64(LIBSSH2_SESSION *session, const char *path, int mode,
libssh2_int64_t size, time_t mtime, time_t atime)
{
LIBSSH2_CHANNEL *ptr;
BLOCK_ADJUST_ERRNO(ptr, session,
scp_send(session, path, mode, size, mtime, atime));
return ptr;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/agent_win.c | /*
* Copyright (c) 2009 by Daiki Ueno
* Copyright (C) 2010-2014 by Daniel Stenberg
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include "agent.h"
#include "misc.h"
#include <errno.h>
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#else
/* Use the existence of sys/un.h as a test if Unix domain socket is
supported. winsock*.h define PF_UNIX/AF_UNIX but do not actually
support them. */
#undef PF_UNIX
#endif
#include "userauth.h"
#include "session.h"
#ifdef WIN32
#include <stdlib.h>
#endif
#ifdef WIN32
/* Code to talk to OpenSSH was taken and modified from the Win32 port of
* Portable OpenSSH by the PowerShell team. Commit
* 8ab565c53f3619d6a1f5ac229e212cad8a52852c of
* https://github.com/PowerShell/openssh-portable.git was used as the base,
* specificaly the following files:
*
* - contrib\win32\win32compat\fileio.c
* - Structure of agent_connect_openssh from ssh_get_authentication_socket
* - Structure of agent_transact_openssh from ssh_request_reply
* - contrib\win32\win32compat\wmain_common.c
* - Windows equivalent functions for common Unix functions, inlined into
* this implementation
* - fileio_connect replacing connect
* - fileio_read replacing read
* - fileio_write replacing write
* - fileio_close replacing close
*
* Author: Tatu Ylonen <[email protected]>
* Copyright (c) 1995 Tatu Ylonen <[email protected]>, Espoo, Finland
* All rights reserved
* Functions for connecting the local authentication agent.
*
* As far as I am concerned, the code I have written for this software
* can be used freely for any purpose. Any derived versions of this
* software must be clearly marked as such, and if the derived work is
* incompatible with the protocol description in the RFC file, it must be
* called by a name other than "ssh" or "Secure Shell".
*
* SSH2 implementation,
* Copyright (c) 2000 Markus Friedl. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright (c) 2015 Microsoft Corp.
* All rights reserved
*
* Microsoft openssh win32 port
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define WIN32_OPENSSH_AGENT_SOCK "\\\\.\\pipe\\openssh-ssh-agent"
static int
agent_connect_openssh(LIBSSH2_AGENT *agent)
{
int ret = LIBSSH2_ERROR_NONE;
const char *path;
HANDLE pipe = INVALID_HANDLE_VALUE;
HANDLE event = NULL;
path = agent->identity_agent_path;
if(!path) {
path = getenv("SSH_AUTH_SOCK");
if(!path)
path = WIN32_OPENSSH_AGENT_SOCK;
}
for(;;) {
pipe = CreateFileA(
path,
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
/* Non-blocking mode for agent connections is not implemented at
* the point this was implemented. The code for Win32 OpenSSH
* should support non-blocking IO, but the code calling it doesn't
* support it as of yet.
* When non-blocking IO is implemented for the surrounding code,
* uncomment the following line to enable support within the Win32
* OpenSSH code.
*/
/* FILE_FLAG_OVERLAPPED | */
SECURITY_SQOS_PRESENT |
SECURITY_IDENTIFICATION,
NULL
);
if(pipe != INVALID_HANDLE_VALUE)
break;
if(GetLastError() != ERROR_PIPE_BUSY)
break;
/* Wait up to 1 second for a pipe instance to become available */
if(!WaitNamedPipeA(path, 1000))
break;
}
if(pipe == INVALID_HANDLE_VALUE) {
ret = _libssh2_error(agent->session, LIBSSH2_ERROR_AGENT_PROTOCOL,
"unable to connect to agent pipe");
goto cleanup;
}
if(SetHandleInformation(pipe, HANDLE_FLAG_INHERIT, 0) == FALSE) {
ret = _libssh2_error(agent->session, LIBSSH2_ERROR_AGENT_PROTOCOL,
"unable to set handle information of agent pipe");
goto cleanup;
}
event = CreateEventA(NULL, TRUE, FALSE, NULL);
if(event == NULL) {
ret = _libssh2_error(agent->session, LIBSSH2_ERROR_AGENT_PROTOCOL,
"unable to create async I/O event");
goto cleanup;
}
agent->pipe = pipe;
pipe = INVALID_HANDLE_VALUE;
agent->overlapped.hEvent = event;
event = NULL;
agent->fd = 0; /* Mark as the connection has been established */
cleanup:
if(event != NULL)
CloseHandle(event);
if(pipe != INVALID_HANDLE_VALUE)
CloseHandle(pipe);
return ret;
}
#define RECV_SEND_ALL(func, agent, buffer, length, total) \
DWORD bytes_transfered; \
BOOL ret; \
DWORD err; \
int rc; \
\
while(*total < length) { \
if(!agent->pending_io) \
ret = func(agent->pipe, (char *)buffer + *total, \
(DWORD)(length - *total), &bytes_transfered, \
&agent->overlapped); \
else \
ret = GetOverlappedResult(agent->pipe, &agent->overlapped, \
&bytes_transfered, FALSE); \
\
*total += bytes_transfered; \
if(!ret) { \
err = GetLastError(); \
if((!agent->pending_io && ERROR_IO_PENDING == err) \
|| (agent->pending_io && ERROR_IO_INCOMPLETE == err)) { \
agent->pending_io = TRUE; \
return LIBSSH2_ERROR_EAGAIN; \
} \
\
return LIBSSH2_ERROR_SOCKET_NONE; \
} \
agent->pending_io = FALSE; \
} \
\
rc = (int)*total; \
*total = 0; \
return rc;
static int
win32_openssh_send_all(LIBSSH2_AGENT *agent, void *buffer, size_t length,
size_t *send_recv_total)
{
RECV_SEND_ALL(WriteFile, agent, buffer, length, send_recv_total)
}
static int
win32_openssh_recv_all(LIBSSH2_AGENT *agent, void *buffer, size_t length,
size_t *send_recv_total)
{
RECV_SEND_ALL(ReadFile, agent, buffer, length, send_recv_total)
}
#undef RECV_SEND_ALL
static int
agent_transact_openssh(LIBSSH2_AGENT *agent, agent_transaction_ctx_t transctx)
{
unsigned char buf[4];
int rc;
/* Send the length of the request */
if(transctx->state == agent_NB_state_request_created) {
_libssh2_htonu32(buf, (uint32_t)transctx->request_len);
rc = win32_openssh_send_all(agent, buf, sizeof buf,
&transctx->send_recv_total);
if(rc == LIBSSH2_ERROR_EAGAIN)
return LIBSSH2_ERROR_EAGAIN;
else if(rc < 0)
return _libssh2_error(agent->session, LIBSSH2_ERROR_SOCKET_SEND,
"agent send failed");
transctx->state = agent_NB_state_request_length_sent;
}
/* Send the request body */
if(transctx->state == agent_NB_state_request_length_sent) {
rc = win32_openssh_send_all(agent, transctx->request,
transctx->request_len,
&transctx->send_recv_total);
if(rc == LIBSSH2_ERROR_EAGAIN)
return LIBSSH2_ERROR_EAGAIN;
else if(rc < 0)
return _libssh2_error(agent->session, LIBSSH2_ERROR_SOCKET_SEND,
"agent send failed");
transctx->state = agent_NB_state_request_sent;
}
/* Receive the length of the body */
if(transctx->state == agent_NB_state_request_sent) {
rc = win32_openssh_recv_all(agent, buf, sizeof buf,
&transctx->send_recv_total);
if(rc == LIBSSH2_ERROR_EAGAIN)
return LIBSSH2_ERROR_EAGAIN;
else if(rc < 0)
return _libssh2_error(agent->session, LIBSSH2_ERROR_SOCKET_RECV,
"agent recv failed");
transctx->response_len = _libssh2_ntohu32(buf);
transctx->response = LIBSSH2_ALLOC(agent->session,
transctx->response_len);
if(!transctx->response)
return LIBSSH2_ERROR_ALLOC;
transctx->state = agent_NB_state_response_length_received;
}
/* Receive the response body */
if(transctx->state == agent_NB_state_response_length_received) {
rc = win32_openssh_recv_all(agent, transctx->response,
transctx->response_len,
&transctx->send_recv_total);
if(rc == LIBSSH2_ERROR_EAGAIN)
return LIBSSH2_ERROR_EAGAIN;
else if(rc < 0)
return _libssh2_error(agent->session, LIBSSH2_ERROR_SOCKET_RECV,
"agent recv failed");
transctx->state = agent_NB_state_response_received;
}
return LIBSSH2_ERROR_NONE;
}
static int
agent_disconnect_openssh(LIBSSH2_AGENT *agent)
{
if(!CancelIo(agent->pipe))
return _libssh2_error(agent->session, LIBSSH2_ERROR_SOCKET_DISCONNECT,
"failed to cancel pending IO of agent pipe");
if(!CloseHandle(agent->overlapped.hEvent))
return _libssh2_error(agent->session, LIBSSH2_ERROR_SOCKET_DISCONNECT,
"failed to close handle to async I/O event");
agent->overlapped.hEvent = NULL;
/* let queued APCs (if any) drain */
SleepEx(0, TRUE);
if(!CloseHandle(agent->pipe))
return _libssh2_error(agent->session, LIBSSH2_ERROR_SOCKET_DISCONNECT,
"failed to close handle to agent pipe");
agent->pipe = INVALID_HANDLE_VALUE;
agent->fd = LIBSSH2_INVALID_SOCKET;
return LIBSSH2_ERROR_NONE;
}
struct agent_ops agent_ops_openssh = {
agent_connect_openssh,
agent_transact_openssh,
agent_disconnect_openssh
};
#endif /* WIN32 */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/transport.c | /* Copyright (C) 2007 The Written Word, Inc. All rights reserved.
* Copyright (C) 2009-2010 by Daniel Stenberg
* Author: Daniel Stenberg <[email protected]>
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file handles reading and writing to the SECSH transport layer. RFC4253.
*/
#include "libssh2_priv.h"
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#ifdef LIBSSH2DEBUG
#include <stdio.h>
#endif
#include <assert.h>
#include "transport.h"
#include "mac.h"
#define MAX_BLOCKSIZE 32 /* MUST fit biggest crypto block size we use/get */
#define MAX_MACSIZE 64 /* MUST fit biggest MAC length we support */
#ifdef LIBSSH2DEBUG
#define UNPRINTABLE_CHAR '.'
static void
debugdump(LIBSSH2_SESSION * session,
const char *desc, const unsigned char *ptr, size_t size)
{
size_t i;
size_t c;
unsigned int width = 0x10;
char buffer[256]; /* Must be enough for width*4 + about 30 or so */
size_t used;
static const char *hex_chars = "0123456789ABCDEF";
if(!(session->showmask & LIBSSH2_TRACE_TRANS)) {
/* not asked for, bail out */
return;
}
used = snprintf(buffer, sizeof(buffer), "=> %s (%d bytes)\n",
desc, (int) size);
if(session->tracehandler)
(session->tracehandler)(session, session->tracehandler_context,
buffer, used);
else
fprintf(stderr, "%s", buffer);
for(i = 0; i < size; i += width) {
used = snprintf(buffer, sizeof(buffer), "%04lx: ", (long)i);
/* hex not disabled, show it */
for(c = 0; c < width; c++) {
if(i + c < size) {
buffer[used++] = hex_chars[(ptr[i + c] >> 4) & 0xF];
buffer[used++] = hex_chars[ptr[i + c] & 0xF];
}
else {
buffer[used++] = ' ';
buffer[used++] = ' ';
}
buffer[used++] = ' ';
if((width/2) - 1 == c)
buffer[used++] = ' ';
}
buffer[used++] = ':';
buffer[used++] = ' ';
for(c = 0; (c < width) && (i + c < size); c++) {
buffer[used++] = isprint(ptr[i + c]) ?
ptr[i + c] : UNPRINTABLE_CHAR;
}
buffer[used++] = '\n';
buffer[used] = 0;
if(session->tracehandler)
(session->tracehandler)(session, session->tracehandler_context,
buffer, used);
else
fprintf(stderr, "%s", buffer);
}
}
#else
#define debugdump(a,x,y,z)
#endif
/* decrypt() decrypts 'len' bytes from 'source' to 'dest'.
*
* returns 0 on success and negative on failure
*/
static int
decrypt(LIBSSH2_SESSION * session, unsigned char *source,
unsigned char *dest, int len)
{
struct transportpacket *p = &session->packet;
int blocksize = session->remote.crypt->blocksize;
/* if we get called with a len that isn't an even number of blocksizes
we risk losing those extra bytes */
assert((len % blocksize) == 0);
while(len >= blocksize) {
if(session->remote.crypt->crypt(session, source, blocksize,
&session->remote.crypt_abstract)) {
LIBSSH2_FREE(session, p->payload);
return LIBSSH2_ERROR_DECRYPT;
}
/* if the crypt() function would write to a given address it
wouldn't have to memcpy() and we could avoid this memcpy()
too */
memcpy(dest, source, blocksize);
len -= blocksize; /* less bytes left */
dest += blocksize; /* advance write pointer */
source += blocksize; /* advance read pointer */
}
return LIBSSH2_ERROR_NONE; /* all is fine */
}
/*
* fullpacket() gets called when a full packet has been received and properly
* collected.
*/
static int
fullpacket(LIBSSH2_SESSION * session, int encrypted /* 1 or 0 */ )
{
unsigned char macbuf[MAX_MACSIZE];
struct transportpacket *p = &session->packet;
int rc;
int compressed;
if(session->fullpacket_state == libssh2_NB_state_idle) {
session->fullpacket_macstate = LIBSSH2_MAC_CONFIRMED;
session->fullpacket_payload_len = p->packet_length - 1;
if(encrypted) {
/* Calculate MAC hash */
session->remote.mac->hash(session, macbuf, /* store hash here */
session->remote.seqno,
p->init, 5,
p->payload,
session->fullpacket_payload_len,
&session->remote.mac_abstract);
/* Compare the calculated hash with the MAC we just read from
* the network. The read one is at the very end of the payload
* buffer. Note that 'payload_len' here is the packet_length
* field which includes the padding but not the MAC.
*/
if(memcmp(macbuf, p->payload + session->fullpacket_payload_len,
session->remote.mac->mac_len)) {
session->fullpacket_macstate = LIBSSH2_MAC_INVALID;
}
}
session->remote.seqno++;
/* ignore the padding */
session->fullpacket_payload_len -= p->padding_length;
/* Check for and deal with decompression */
compressed =
session->local.comp != NULL &&
session->local.comp->compress &&
((session->state & LIBSSH2_STATE_AUTHENTICATED) ||
session->local.comp->use_in_auth);
if(compressed && session->remote.comp_abstract) {
/*
* The buffer for the decompression (remote.comp_abstract) is
* initialised in time when it is needed so as long it is NULL we
* cannot decompress.
*/
unsigned char *data;
size_t data_len;
rc = session->remote.comp->decomp(session,
&data, &data_len,
LIBSSH2_PACKET_MAXDECOMP,
p->payload,
session->fullpacket_payload_len,
&session->remote.comp_abstract);
LIBSSH2_FREE(session, p->payload);
if(rc)
return rc;
p->payload = data;
session->fullpacket_payload_len = data_len;
}
session->fullpacket_packet_type = p->payload[0];
debugdump(session, "libssh2_transport_read() plain",
p->payload, session->fullpacket_payload_len);
session->fullpacket_state = libssh2_NB_state_created;
}
if(session->fullpacket_state == libssh2_NB_state_created) {
rc = _libssh2_packet_add(session, p->payload,
session->fullpacket_payload_len,
session->fullpacket_macstate);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
if(rc) {
session->fullpacket_state = libssh2_NB_state_idle;
return rc;
}
}
session->fullpacket_state = libssh2_NB_state_idle;
return session->fullpacket_packet_type;
}
/*
* _libssh2_transport_read
*
* Collect a packet into the input queue.
*
* Returns packet type added to input queue (0 if nothing added), or a
* negative error number.
*/
/*
* This function reads the binary stream as specified in chapter 6 of RFC4253
* "The Secure Shell (SSH) Transport Layer Protocol"
*
* DOES NOT call _libssh2_error() for ANY error case.
*/
int _libssh2_transport_read(LIBSSH2_SESSION * session)
{
int rc;
struct transportpacket *p = &session->packet;
int remainbuf;
int remainpack;
int numbytes;
int numdecrypt;
unsigned char block[MAX_BLOCKSIZE];
int blocksize;
int encrypted = 1;
/* default clear the bit */
session->socket_block_directions &= ~LIBSSH2_SESSION_BLOCK_INBOUND;
/*
* All channels, systems, subsystems, etc eventually make it down here
* when looking for more incoming data. If a key exchange is going on
* (LIBSSH2_STATE_EXCHANGING_KEYS bit is set) then the remote end will
* ONLY send key exchange related traffic. In non-blocking mode, there is
* a chance to break out of the kex_exchange function with an EAGAIN
* status, and never come back to it. If LIBSSH2_STATE_EXCHANGING_KEYS is
* active, then we must redirect to the key exchange. However, if
* kex_exchange is active (as in it is the one that calls this execution
* of packet_read, then don't redirect, as that would be an infinite loop!
*/
if(session->state & LIBSSH2_STATE_EXCHANGING_KEYS &&
!(session->state & LIBSSH2_STATE_KEX_ACTIVE)) {
/* Whoever wants a packet won't get anything until the key re-exchange
* is done!
*/
_libssh2_debug(session, LIBSSH2_TRACE_TRANS, "Redirecting into the"
" key re-exchange from _libssh2_transport_read");
rc = _libssh2_kex_exchange(session, 1, &session->startup_key_state);
if(rc)
return rc;
}
/*
* =============================== NOTE ===============================
* I know this is very ugly and not a really good use of "goto", but
* this case statement would be even uglier to do it any other way
*/
if(session->readPack_state == libssh2_NB_state_jump1) {
session->readPack_state = libssh2_NB_state_idle;
encrypted = session->readPack_encrypted;
goto libssh2_transport_read_point1;
}
do {
if(session->socket_state == LIBSSH2_SOCKET_DISCONNECTED) {
return LIBSSH2_ERROR_SOCKET_DISCONNECT;
}
if(session->state & LIBSSH2_STATE_NEWKEYS) {
blocksize = session->remote.crypt->blocksize;
}
else {
encrypted = 0; /* not encrypted */
blocksize = 5; /* not strictly true, but we can use 5 here to
make the checks below work fine still */
}
/* read/use a whole big chunk into a temporary area stored in
the LIBSSH2_SESSION struct. We will decrypt data from that
buffer into the packet buffer so this temp one doesn't have
to be able to keep a whole SSH packet, just be large enough
so that we can read big chunks from the network layer. */
/* how much data there is remaining in the buffer to deal with
before we should read more from the network */
remainbuf = p->writeidx - p->readidx;
/* if remainbuf turns negative we have a bad internal error */
assert(remainbuf >= 0);
if(remainbuf < blocksize) {
/* If we have less than a blocksize left, it is too
little data to deal with, read more */
ssize_t nread;
/* move any remainder to the start of the buffer so
that we can do a full refill */
if(remainbuf) {
memmove(p->buf, &p->buf[p->readidx], remainbuf);
p->readidx = 0;
p->writeidx = remainbuf;
}
else {
/* nothing to move, just zero the indexes */
p->readidx = p->writeidx = 0;
}
/* now read a big chunk from the network into the temp buffer */
nread =
LIBSSH2_RECV(session, &p->buf[remainbuf],
PACKETBUFSIZE - remainbuf,
LIBSSH2_SOCKET_RECV_FLAGS(session));
if(nread <= 0) {
/* check if this is due to EAGAIN and return the special
return code if so, error out normally otherwise */
if((nread < 0) && (nread == -EAGAIN)) {
session->socket_block_directions |=
LIBSSH2_SESSION_BLOCK_INBOUND;
return LIBSSH2_ERROR_EAGAIN;
}
_libssh2_debug(session, LIBSSH2_TRACE_SOCKET,
"Error recving %d bytes (got %d)",
PACKETBUFSIZE - remainbuf, -nread);
return LIBSSH2_ERROR_SOCKET_RECV;
}
_libssh2_debug(session, LIBSSH2_TRACE_SOCKET,
"Recved %d/%d bytes to %p+%d", nread,
PACKETBUFSIZE - remainbuf, p->buf, remainbuf);
debugdump(session, "libssh2_transport_read() raw",
&p->buf[remainbuf], nread);
/* advance write pointer */
p->writeidx += nread;
/* update remainbuf counter */
remainbuf = p->writeidx - p->readidx;
}
/* how much data to deal with from the buffer */
numbytes = remainbuf;
if(!p->total_num) {
size_t total_num;
/* No payload package area allocated yet. To know the
size of this payload, we need to decrypt the first
blocksize data. */
if(numbytes < blocksize) {
/* we can't act on anything less than blocksize, but this
check is only done for the initial block since once we have
got the start of a block we can in fact deal with fractions
*/
session->socket_block_directions |=
LIBSSH2_SESSION_BLOCK_INBOUND;
return LIBSSH2_ERROR_EAGAIN;
}
if(encrypted) {
rc = decrypt(session, &p->buf[p->readidx], block, blocksize);
if(rc != LIBSSH2_ERROR_NONE) {
return rc;
}
/* save the first 5 bytes of the decrypted package, to be
used in the hash calculation later down. */
memcpy(p->init, block, 5);
}
else {
/* the data is plain, just copy it verbatim to
the working block buffer */
memcpy(block, &p->buf[p->readidx], blocksize);
}
/* advance the read pointer */
p->readidx += blocksize;
/* we now have the initial blocksize bytes decrypted,
* and we can extract packet and padding length from it
*/
p->packet_length = _libssh2_ntohu32(block);
if(p->packet_length < 1) {
return LIBSSH2_ERROR_DECRYPT;
}
else if(p->packet_length > LIBSSH2_PACKET_MAXPAYLOAD) {
return LIBSSH2_ERROR_OUT_OF_BOUNDARY;
}
p->padding_length = block[4];
if(p->padding_length > p->packet_length - 1) {
return LIBSSH2_ERROR_DECRYPT;
}
/* total_num is the number of bytes following the initial
(5 bytes) packet length and padding length fields */
total_num =
p->packet_length - 1 +
(encrypted ? session->remote.mac->mac_len : 0);
/* RFC4253 section 6.1 Maximum Packet Length says:
*
* "All implementations MUST be able to process
* packets with uncompressed payload length of 32768
* bytes or less and total packet size of 35000 bytes
* or less (including length, padding length, payload,
* padding, and MAC.)."
*/
if(total_num > LIBSSH2_PACKET_MAXPAYLOAD || total_num == 0) {
return LIBSSH2_ERROR_OUT_OF_BOUNDARY;
}
/* Get a packet handle put data into. We get one to
hold all data, including padding and MAC. */
p->payload = LIBSSH2_ALLOC(session, total_num);
if(!p->payload) {
return LIBSSH2_ERROR_ALLOC;
}
p->total_num = total_num;
/* init write pointer to start of payload buffer */
p->wptr = p->payload;
if(blocksize > 5) {
/* copy the data from index 5 to the end of
the blocksize from the temporary buffer to
the start of the decrypted buffer */
if(blocksize - 5 <= (int) total_num) {
memcpy(p->wptr, &block[5], blocksize - 5);
p->wptr += blocksize - 5; /* advance write pointer */
}
else {
if(p->payload)
LIBSSH2_FREE(session, p->payload);
return LIBSSH2_ERROR_OUT_OF_BOUNDARY;
}
}
/* init the data_num field to the number of bytes of
the package read so far */
p->data_num = p->wptr - p->payload;
/* we already dealt with a blocksize worth of data */
numbytes -= blocksize;
}
/* how much there is left to add to the current payload
package */
remainpack = p->total_num - p->data_num;
if(numbytes > remainpack) {
/* if we have more data in the buffer than what is going into this
particular packet, we limit this round to this packet only */
numbytes = remainpack;
}
if(encrypted) {
/* At the end of the incoming stream, there is a MAC,
and we don't want to decrypt that since we need it
"raw". We MUST however decrypt the padding data
since it is used for the hash later on. */
int skip = session->remote.mac->mac_len;
/* if what we have plus numbytes is bigger than the
total minus the skip margin, we should lower the
amount to decrypt even more */
if((p->data_num + numbytes) > (p->total_num - skip)) {
numdecrypt = (p->total_num - skip) - p->data_num;
}
else {
int frac;
numdecrypt = numbytes;
frac = numdecrypt % blocksize;
if(frac) {
/* not an aligned amount of blocks,
align it */
numdecrypt -= frac;
/* and make it no unencrypted data
after it */
numbytes = 0;
}
}
}
else {
/* unencrypted data should not be decrypted at all */
numdecrypt = 0;
}
/* if there are bytes to decrypt, do that */
if(numdecrypt > 0) {
/* now decrypt the lot */
rc = decrypt(session, &p->buf[p->readidx], p->wptr, numdecrypt);
if(rc != LIBSSH2_ERROR_NONE) {
p->total_num = 0; /* no packet buffer available */
return rc;
}
/* advance the read pointer */
p->readidx += numdecrypt;
/* advance write pointer */
p->wptr += numdecrypt;
/* increase data_num */
p->data_num += numdecrypt;
/* bytes left to take care of without decryption */
numbytes -= numdecrypt;
}
/* if there are bytes to copy that aren't decrypted, simply
copy them as-is to the target buffer */
if(numbytes > 0) {
if(numbytes <= (int)(p->total_num - (p->wptr - p->payload))) {
memcpy(p->wptr, &p->buf[p->readidx], numbytes);
}
else {
if(p->payload)
LIBSSH2_FREE(session, p->payload);
return LIBSSH2_ERROR_OUT_OF_BOUNDARY;
}
/* advance the read pointer */
p->readidx += numbytes;
/* advance write pointer */
p->wptr += numbytes;
/* increase data_num */
p->data_num += numbytes;
}
/* now check how much data there's left to read to finish the
current packet */
remainpack = p->total_num - p->data_num;
if(!remainpack) {
/* we have a full packet */
libssh2_transport_read_point1:
rc = fullpacket(session, encrypted);
if(rc == LIBSSH2_ERROR_EAGAIN) {
if(session->packAdd_state != libssh2_NB_state_idle) {
/* fullpacket only returns LIBSSH2_ERROR_EAGAIN if
* libssh2_packet_add returns LIBSSH2_ERROR_EAGAIN. If
* that returns LIBSSH2_ERROR_EAGAIN but the packAdd_state
* is idle, then the packet has been added to the brigade,
* but some immediate action that was taken based on the
* packet type (such as key re-exchange) is not yet
* complete. Clear the way for a new packet to be read
* in.
*/
session->readPack_encrypted = encrypted;
session->readPack_state = libssh2_NB_state_jump1;
}
return rc;
}
p->total_num = 0; /* no packet buffer available */
return rc;
}
} while(1); /* loop */
return LIBSSH2_ERROR_SOCKET_RECV; /* we never reach this point */
}
static int
send_existing(LIBSSH2_SESSION *session, const unsigned char *data,
size_t data_len, ssize_t *ret)
{
ssize_t rc;
ssize_t length;
struct transportpacket *p = &session->packet;
if(!p->olen) {
*ret = 0;
return LIBSSH2_ERROR_NONE;
}
/* send as much as possible of the existing packet */
if((data != p->odata) || (data_len != p->olen)) {
/* When we are about to complete the sending of a packet, it is vital
that the caller doesn't try to send a new/different packet since
we don't add this one up until the previous one has been sent. To
make the caller really notice his/hers flaw, we return error for
this case */
return LIBSSH2_ERROR_BAD_USE;
}
*ret = 1; /* set to make our parent return */
/* number of bytes left to send */
length = p->ototal_num - p->osent;
rc = LIBSSH2_SEND(session, &p->outbuf[p->osent], length,
LIBSSH2_SOCKET_SEND_FLAGS(session));
if(rc < 0)
_libssh2_debug(session, LIBSSH2_TRACE_SOCKET,
"Error sending %d bytes: %d", length, -rc);
else {
_libssh2_debug(session, LIBSSH2_TRACE_SOCKET,
"Sent %d/%d bytes at %p+%d", rc, length, p->outbuf,
p->osent);
debugdump(session, "libssh2_transport_write send()",
&p->outbuf[p->osent], rc);
}
if(rc == length) {
/* the remainder of the package was sent */
p->ototal_num = 0;
p->olen = 0;
/* we leave *ret set so that the parent returns as we MUST return back
a send success now, so that we don't risk sending EAGAIN later
which then would confuse the parent function */
return LIBSSH2_ERROR_NONE;
}
else if(rc < 0) {
/* nothing was sent */
if(rc != -EAGAIN)
/* send failure! */
return LIBSSH2_ERROR_SOCKET_SEND;
session->socket_block_directions |= LIBSSH2_SESSION_BLOCK_OUTBOUND;
return LIBSSH2_ERROR_EAGAIN;
}
p->osent += rc; /* we sent away this much data */
return rc < length ? LIBSSH2_ERROR_EAGAIN : LIBSSH2_ERROR_NONE;
}
/*
* libssh2_transport_send
*
* Send a packet, encrypting it and adding a MAC code if necessary
* Returns 0 on success, non-zero on failure.
*
* The data is provided as _two_ data areas that are combined by this
* function. The 'data' part is sent immediately before 'data2'. 'data2' may
* be set to NULL to only use a single part.
*
* Returns LIBSSH2_ERROR_EAGAIN if it would block or if the whole packet was
* not sent yet. If it does so, the caller should call this function again as
* soon as it is likely that more data can be sent, and this function MUST
* then be called with the same argument set (same data pointer and same
* data_len) until ERROR_NONE or failure is returned.
*
* This function DOES NOT call _libssh2_error() on any errors.
*/
int _libssh2_transport_send(LIBSSH2_SESSION *session,
const unsigned char *data, size_t data_len,
const unsigned char *data2, size_t data2_len)
{
int blocksize =
(session->state & LIBSSH2_STATE_NEWKEYS) ?
session->local.crypt->blocksize : 8;
int padding_length;
size_t packet_length;
int total_length;
#ifdef RANDOM_PADDING
int rand_max;
int seed = data[0]; /* FIXME: make this random */
#endif
struct transportpacket *p = &session->packet;
int encrypted;
int compressed;
ssize_t ret;
int rc;
const unsigned char *orgdata = data;
size_t orgdata_len = data_len;
/*
* If the last read operation was interrupted in the middle of a key
* exchange, we must complete that key exchange before continuing to write
* further data.
*
* See the similar block in _libssh2_transport_read for more details.
*/
if(session->state & LIBSSH2_STATE_EXCHANGING_KEYS &&
!(session->state & LIBSSH2_STATE_KEX_ACTIVE)) {
/* Don't write any new packets if we're still in the middle of a key
* exchange. */
_libssh2_debug(session, LIBSSH2_TRACE_TRANS, "Redirecting into the"
" key re-exchange from _libssh2_transport_send");
rc = _libssh2_kex_exchange(session, 1, &session->startup_key_state);
if(rc)
return rc;
}
debugdump(session, "libssh2_transport_write plain", data, data_len);
if(data2)
debugdump(session, "libssh2_transport_write plain2", data2, data2_len);
/* FIRST, check if we have a pending write to complete. send_existing
only sanity-check data and data_len and not data2 and data2_len!! */
rc = send_existing(session, data, data_len, &ret);
if(rc)
return rc;
session->socket_block_directions &= ~LIBSSH2_SESSION_BLOCK_OUTBOUND;
if(ret)
/* set by send_existing if data was sent */
return rc;
encrypted = (session->state & LIBSSH2_STATE_NEWKEYS) ? 1 : 0;
compressed =
session->local.comp != NULL &&
session->local.comp->compress &&
((session->state & LIBSSH2_STATE_AUTHENTICATED) ||
session->local.comp->use_in_auth);
if(encrypted && compressed && session->local.comp_abstract) {
/* the idea here is that these function must fail if the output gets
larger than what fits in the assigned buffer so thus they don't
check the input size as we don't know how much it compresses */
size_t dest_len = MAX_SSH_PACKET_LEN-5-256;
size_t dest2_len = dest_len;
/* compress directly to the target buffer */
rc = session->local.comp->comp(session,
&p->outbuf[5], &dest_len,
data, data_len,
&session->local.comp_abstract);
if(rc)
return rc; /* compression failure */
if(data2 && data2_len) {
/* compress directly to the target buffer right after where the
previous call put data */
dest2_len -= dest_len;
rc = session->local.comp->comp(session,
&p->outbuf[5 + dest_len],
&dest2_len,
data2, data2_len,
&session->local.comp_abstract);
}
else
dest2_len = 0;
if(rc)
return rc; /* compression failure */
data_len = dest_len + dest2_len; /* use the combined length */
}
else {
if((data_len + data2_len) >= (MAX_SSH_PACKET_LEN-0x100))
/* too large packet, return error for this until we make this
function split it up and send multiple SSH packets */
return LIBSSH2_ERROR_INVAL;
/* copy the payload data */
memcpy(&p->outbuf[5], data, data_len);
if(data2 && data2_len)
memcpy(&p->outbuf[5 + data_len], data2, data2_len);
data_len += data2_len; /* use the combined length */
}
/* RFC4253 says: Note that the length of the concatenation of
'packet_length', 'padding_length', 'payload', and 'random padding'
MUST be a multiple of the cipher block size or 8, whichever is
larger. */
/* Plain math: (4 + 1 + packet_length + padding_length) % blocksize == 0 */
packet_length = data_len + 1 + 4; /* 1 is for padding_length field
4 for the packet_length field */
/* at this point we have it all except the padding */
/* first figure out our minimum padding amount to make it an even
block size */
padding_length = blocksize - (packet_length % blocksize);
/* if the padding becomes too small we add another blocksize worth
of it (taken from the original libssh2 where it didn't have any
real explanation) */
if(padding_length < 4) {
padding_length += blocksize;
}
#ifdef RANDOM_PADDING
/* FIXME: we can add padding here, but that also makes the packets
bigger etc */
/* now we can add 'blocksize' to the padding_length N number of times
(to "help thwart traffic analysis") but it must be less than 255 in
total */
rand_max = (255 - padding_length) / blocksize + 1;
padding_length += blocksize * (seed % rand_max);
#endif
packet_length += padding_length;
/* append the MAC length to the total_length size */
total_length =
packet_length + (encrypted ? session->local.mac->mac_len : 0);
/* store packet_length, which is the size of the whole packet except
the MAC and the packet_length field itself */
_libssh2_htonu32(p->outbuf, packet_length - 4);
/* store padding_length */
p->outbuf[4] = (unsigned char)padding_length;
/* fill the padding area with random junk */
if(_libssh2_random(p->outbuf + 5 + data_len, padding_length)) {
return _libssh2_error(session, LIBSSH2_ERROR_RANDGEN,
"Unable to get random bytes for packet padding");
}
if(encrypted) {
size_t i;
/* Calculate MAC hash. Put the output at index packet_length,
since that size includes the whole packet. The MAC is
calculated on the entire unencrypted packet, including all
fields except the MAC field itself. */
session->local.mac->hash(session, p->outbuf + packet_length,
session->local.seqno, p->outbuf,
packet_length, NULL, 0,
&session->local.mac_abstract);
/* Encrypt the whole packet data, one block size at a time.
The MAC field is not encrypted. */
for(i = 0; i < packet_length; i += session->local.crypt->blocksize) {
unsigned char *ptr = &p->outbuf[i];
if(session->local.crypt->crypt(session, ptr,
session->local.crypt->blocksize,
&session->local.crypt_abstract))
return LIBSSH2_ERROR_ENCRYPT; /* encryption failure */
}
}
session->local.seqno++;
ret = LIBSSH2_SEND(session, p->outbuf, total_length,
LIBSSH2_SOCKET_SEND_FLAGS(session));
if(ret < 0)
_libssh2_debug(session, LIBSSH2_TRACE_SOCKET,
"Error sending %d bytes: %d", total_length, -ret);
else {
_libssh2_debug(session, LIBSSH2_TRACE_SOCKET, "Sent %d/%d bytes at %p",
ret, total_length, p->outbuf);
debugdump(session, "libssh2_transport_write send()", p->outbuf, ret);
}
if(ret != total_length) {
if(ret >= 0 || ret == -EAGAIN) {
/* the whole packet could not be sent, save the rest */
session->socket_block_directions |= LIBSSH2_SESSION_BLOCK_OUTBOUND;
p->odata = orgdata;
p->olen = orgdata_len;
p->osent = ret <= 0 ? 0 : ret;
p->ototal_num = total_length;
return LIBSSH2_ERROR_EAGAIN;
}
return LIBSSH2_ERROR_SOCKET_SEND;
}
/* the whole thing got sent away */
p->odata = NULL;
p->olen = 0;
return LIBSSH2_ERROR_NONE; /* all is good */
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/misc.c | /* Copyright (c) 2004-2007 Sara Golemon <[email protected]>
* Copyright (c) 2009-2019 by Daniel Stenberg
* Copyright (c) 2010 Simon Josefsson
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include "misc.h"
#include "blf.h"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#if defined(HAVE_DECL_SECUREZEROMEMORY) && HAVE_DECL_SECUREZEROMEMORY
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
#endif
#include <stdio.h>
#include <errno.h>
int _libssh2_error_flags(LIBSSH2_SESSION* session, int errcode,
const char *errmsg, int errflags)
{
if(session->err_flags & LIBSSH2_ERR_FLAG_DUP)
LIBSSH2_FREE(session, (char *)session->err_msg);
session->err_code = errcode;
session->err_flags = 0;
if((errmsg != NULL) && ((errflags & LIBSSH2_ERR_FLAG_DUP) != 0)) {
size_t len = strlen(errmsg);
char *copy = LIBSSH2_ALLOC(session, len + 1);
if(copy) {
memcpy(copy, errmsg, len + 1);
session->err_flags = LIBSSH2_ERR_FLAG_DUP;
session->err_msg = copy;
}
else
/* Out of memory: this code path is very unlikely */
session->err_msg = "former error forgotten (OOM)";
}
else
session->err_msg = errmsg;
#ifdef LIBSSH2DEBUG
if((errcode == LIBSSH2_ERROR_EAGAIN) && !session->api_block_mode)
/* if this is EAGAIN and we're in non-blocking mode, don't generate
a debug output for this */
return errcode;
_libssh2_debug(session, LIBSSH2_TRACE_ERROR, "%d - %s", session->err_code,
session->err_msg);
#endif
return errcode;
}
int _libssh2_error(LIBSSH2_SESSION* session, int errcode, const char *errmsg)
{
return _libssh2_error_flags(session, errcode, errmsg, 0);
}
#ifdef WIN32
static int wsa2errno(void)
{
switch(WSAGetLastError()) {
case WSAEWOULDBLOCK:
return EAGAIN;
case WSAENOTSOCK:
return EBADF;
case WSAEINTR:
return EINTR;
default:
/* It is most important to ensure errno does not stay at EAGAIN
* when a different error occurs so just set errno to a generic
* error */
return EIO;
}
}
#endif
/* _libssh2_recv
*
* Replacement for the standard recv, return -errno on failure.
*/
ssize_t
_libssh2_recv(libssh2_socket_t sock, void *buffer, size_t length,
int flags, void **abstract)
{
ssize_t rc;
(void) abstract;
rc = recv(sock, buffer, length, flags);
#ifdef WIN32
if(rc < 0)
return -wsa2errno();
#else
if(rc < 0) {
/* Sometimes the first recv() function call sets errno to ENOENT on
Solaris and HP-UX */
if(errno == ENOENT)
return -EAGAIN;
#ifdef EWOULDBLOCK /* For VMS and other special unixes */
else if(errno == EWOULDBLOCK)
return -EAGAIN;
#endif
else
return -errno;
}
#endif
return rc;
}
/* _libssh2_send
*
* Replacement for the standard send, return -errno on failure.
*/
ssize_t
_libssh2_send(libssh2_socket_t sock, const void *buffer, size_t length,
int flags, void **abstract)
{
ssize_t rc;
(void) abstract;
rc = send(sock, buffer, length, flags);
#ifdef WIN32
if(rc < 0)
return -wsa2errno();
#else
if(rc < 0) {
#ifdef EWOULDBLOCK /* For VMS and other special unixes */
if(errno == EWOULDBLOCK)
return -EAGAIN;
#endif
return -errno;
}
#endif
return rc;
}
/* libssh2_ntohu32
*/
unsigned int
_libssh2_ntohu32(const unsigned char *buf)
{
return (((unsigned int)buf[0] << 24)
| ((unsigned int)buf[1] << 16)
| ((unsigned int)buf[2] << 8)
| ((unsigned int)buf[3]));
}
/* _libssh2_ntohu64
*/
libssh2_uint64_t
_libssh2_ntohu64(const unsigned char *buf)
{
unsigned long msl, lsl;
msl = ((libssh2_uint64_t)buf[0] << 24) | ((libssh2_uint64_t)buf[1] << 16)
| ((libssh2_uint64_t)buf[2] << 8) | (libssh2_uint64_t)buf[3];
lsl = ((libssh2_uint64_t)buf[4] << 24) | ((libssh2_uint64_t)buf[5] << 16)
| ((libssh2_uint64_t)buf[6] << 8) | (libssh2_uint64_t)buf[7];
return ((libssh2_uint64_t)msl <<32) | lsl;
}
/* _libssh2_htonu32
*/
void
_libssh2_htonu32(unsigned char *buf, uint32_t value)
{
buf[0] = (value >> 24) & 0xFF;
buf[1] = (value >> 16) & 0xFF;
buf[2] = (value >> 8) & 0xFF;
buf[3] = value & 0xFF;
}
/* _libssh2_store_u32
*/
void _libssh2_store_u32(unsigned char **buf, uint32_t value)
{
_libssh2_htonu32(*buf, value);
*buf += sizeof(uint32_t);
}
/* _libssh2_store_str
*/
void _libssh2_store_str(unsigned char **buf, const char *str, size_t len)
{
_libssh2_store_u32(buf, (uint32_t)len);
if(len) {
memcpy(*buf, str, len);
*buf += len;
}
}
/* Base64 Conversion */
static const short base64_reverse_table[256] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
-1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
};
/* libssh2_base64_decode
*
* Decode a base64 chunk and store it into a newly alloc'd buffer
*/
LIBSSH2_API int
libssh2_base64_decode(LIBSSH2_SESSION *session, char **data,
unsigned int *datalen, const char *src,
unsigned int src_len)
{
unsigned char *s, *d;
short v;
int i = 0, len = 0;
*data = LIBSSH2_ALLOC(session, (3 * src_len / 4) + 1);
d = (unsigned char *) *data;
if(!d) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for base64 decoding");
}
for(s = (unsigned char *) src; ((char *) s) < (src + src_len); s++) {
v = base64_reverse_table[*s];
if(v < 0)
continue;
switch(i % 4) {
case 0:
d[len] = (unsigned char)(v << 2);
break;
case 1:
d[len++] |= v >> 4;
d[len] = (unsigned char)(v << 4);
break;
case 2:
d[len++] |= v >> 2;
d[len] = (unsigned char)(v << 6);
break;
case 3:
d[len++] |= v;
break;
}
i++;
}
if((i % 4) == 1) {
/* Invalid -- We have a byte which belongs exclusively to a partial
octet */
LIBSSH2_FREE(session, *data);
*data = NULL;
return _libssh2_error(session, LIBSSH2_ERROR_INVAL, "Invalid base64");
}
*datalen = len;
return 0;
}
/* ---- Base64 Encoding/Decoding Table --- */
static const char table64[]=
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/*
* _libssh2_base64_encode()
*
* Returns the length of the newly created base64 string. The third argument
* is a pointer to an allocated area holding the base64 data. If something
* went wrong, 0 is returned.
*
*/
size_t _libssh2_base64_encode(LIBSSH2_SESSION *session,
const char *inp, size_t insize, char **outptr)
{
unsigned char ibuf[3];
unsigned char obuf[4];
int i;
int inputparts;
char *output;
char *base64data;
const char *indata = inp;
*outptr = NULL; /* set to NULL in case of failure before we reach the
end */
if(0 == insize)
insize = strlen(indata);
base64data = output = LIBSSH2_ALLOC(session, insize * 4 / 3 + 4);
if(NULL == output)
return 0;
while(insize > 0) {
for(i = inputparts = 0; i < 3; i++) {
if(insize > 0) {
inputparts++;
ibuf[i] = *indata;
indata++;
insize--;
}
else
ibuf[i] = 0;
}
obuf[0] = (unsigned char) ((ibuf[0] & 0xFC) >> 2);
obuf[1] = (unsigned char) (((ibuf[0] & 0x03) << 4) | \
((ibuf[1] & 0xF0) >> 4));
obuf[2] = (unsigned char) (((ibuf[1] & 0x0F) << 2) | \
((ibuf[2] & 0xC0) >> 6));
obuf[3] = (unsigned char) (ibuf[2] & 0x3F);
switch(inputparts) {
case 1: /* only one byte read */
snprintf(output, 5, "%c%c==",
table64[obuf[0]],
table64[obuf[1]]);
break;
case 2: /* two bytes read */
snprintf(output, 5, "%c%c%c=",
table64[obuf[0]],
table64[obuf[1]],
table64[obuf[2]]);
break;
default:
snprintf(output, 5, "%c%c%c%c",
table64[obuf[0]],
table64[obuf[1]],
table64[obuf[2]],
table64[obuf[3]]);
break;
}
output += 4;
}
*output = 0;
*outptr = base64data; /* make it return the actual data memory */
return strlen(base64data); /* return the length of the new data */
}
/* ---- End of Base64 Encoding ---- */
LIBSSH2_API void
libssh2_free(LIBSSH2_SESSION *session, void *ptr)
{
LIBSSH2_FREE(session, ptr);
}
#ifdef LIBSSH2DEBUG
#include <stdarg.h>
LIBSSH2_API int
libssh2_trace(LIBSSH2_SESSION * session, int bitmask)
{
session->showmask = bitmask;
return 0;
}
LIBSSH2_API int
libssh2_trace_sethandler(LIBSSH2_SESSION *session, void *handler_context,
libssh2_trace_handler_func callback)
{
session->tracehandler = callback;
session->tracehandler_context = handler_context;
return 0;
}
void
_libssh2_debug(LIBSSH2_SESSION * session, int context, const char *format, ...)
{
char buffer[1536];
int len, msglen, buflen = sizeof(buffer);
va_list vargs;
struct timeval now;
static int firstsec;
static const char *const contexts[] = {
"Unknown",
"Transport",
"Key Ex",
"Userauth",
"Conn",
"SCP",
"SFTP",
"Failure Event",
"Publickey",
"Socket",
};
const char *contexttext = contexts[0];
unsigned int contextindex;
if(!(session->showmask & context)) {
/* no such output asked for */
return;
}
/* Find the first matching context string for this message */
for(contextindex = 0; contextindex < ARRAY_SIZE(contexts);
contextindex++) {
if((context & (1 << contextindex)) != 0) {
contexttext = contexts[contextindex];
break;
}
}
_libssh2_gettimeofday(&now, NULL);
if(!firstsec) {
firstsec = now.tv_sec;
}
now.tv_sec -= firstsec;
len = snprintf(buffer, buflen, "[libssh2] %d.%06d %s: ",
(int)now.tv_sec, (int)now.tv_usec, contexttext);
if(len >= buflen)
msglen = buflen - 1;
else {
buflen -= len;
msglen = len;
va_start(vargs, format);
len = vsnprintf(buffer + msglen, buflen, format, vargs);
va_end(vargs);
msglen += len < buflen ? len : buflen - 1;
}
if(session->tracehandler)
(session->tracehandler)(session, session->tracehandler_context, buffer,
msglen);
else
fprintf(stderr, "%s\n", buffer);
}
#else
LIBSSH2_API int
libssh2_trace(LIBSSH2_SESSION * session, int bitmask)
{
(void) session;
(void) bitmask;
return 0;
}
LIBSSH2_API int
libssh2_trace_sethandler(LIBSSH2_SESSION *session, void *handler_context,
libssh2_trace_handler_func callback)
{
(void) session;
(void) handler_context;
(void) callback;
return 0;
}
#endif
/* init the list head */
void _libssh2_list_init(struct list_head *head)
{
head->first = head->last = NULL;
}
/* add a node to the list */
void _libssh2_list_add(struct list_head *head,
struct list_node *entry)
{
/* store a pointer to the head */
entry->head = head;
/* we add this entry at the "top" so it has no next */
entry->next = NULL;
/* make our prev point to what the head thinks is last */
entry->prev = head->last;
/* and make head's last be us now */
head->last = entry;
/* make sure our 'prev' node points to us next */
if(entry->prev)
entry->prev->next = entry;
else
head->first = entry;
}
/* return the "first" node in the list this head points to */
void *_libssh2_list_first(struct list_head *head)
{
return head->first;
}
/* return the next node in the list */
void *_libssh2_list_next(struct list_node *node)
{
return node->next;
}
/* return the prev node in the list */
void *_libssh2_list_prev(struct list_node *node)
{
return node->prev;
}
/* remove this node from the list */
void _libssh2_list_remove(struct list_node *entry)
{
if(entry->prev)
entry->prev->next = entry->next;
else
entry->head->first = entry->next;
if(entry->next)
entry->next->prev = entry->prev;
else
entry->head->last = entry->prev;
}
#if 0
/* insert a node before the given 'after' entry */
void _libssh2_list_insert(struct list_node *after, /* insert before this */
struct list_node *entry)
{
/* 'after' is next to 'entry' */
bentry->next = after;
/* entry's prev is then made to be the prev after current has */
entry->prev = after->prev;
/* the node that is now before 'entry' was previously before 'after'
and must be made to point to 'entry' correctly */
if(entry->prev)
entry->prev->next = entry;
else
/* there was no node before this, so we make sure we point the head
pointer to this node */
after->head->first = entry;
/* after's prev entry points back to entry */
after->prev = entry;
/* after's next entry is still the same as before */
/* entry's head is the same as after's */
entry->head = after->head;
}
#endif
/* this define is defined in misc.h for the correct platforms */
#ifdef LIBSSH2_GETTIMEOFDAY_WIN32
/*
* gettimeofday
* Implementation according to:
* The Open Group Base Specifications Issue 6
* IEEE Std 1003.1, 2004 Edition
*/
/*
* THIS SOFTWARE IS NOT COPYRIGHTED
*
* This source code is offered for use in the public domain. You may
* use, modify or distribute it freely.
*
* This code is distributed in the hope that it will be useful but
* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
* DISCLAIMED. This includes but is not limited to warranties of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Contributed by:
* Danny Smith <[email protected]>
*/
/* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
#define _W32_FT_OFFSET (116444736000000000)
int __cdecl _libssh2_gettimeofday(struct timeval *tp, void *tzp)
{
union {
unsigned __int64 ns100; /*time since 1 Jan 1601 in 100ns units */
FILETIME ft;
} _now;
(void)tzp;
if(tp) {
GetSystemTimeAsFileTime(&_now.ft);
tp->tv_usec = (long)((_now.ns100 / 10) % 1000000);
tp->tv_sec = (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000);
}
/* Always return 0 as per Open Group Base Specifications Issue 6.
Do not set errno on error. */
return 0;
}
#endif
void *_libssh2_calloc(LIBSSH2_SESSION* session, size_t size)
{
void *p = LIBSSH2_ALLOC(session, size);
if(p) {
memset(p, 0, size);
}
return p;
}
/* XOR operation on buffers input1 and input2, result in output.
It is safe to use an input buffer as the output buffer. */
void _libssh2_xor_data(unsigned char *output,
const unsigned char *input1,
const unsigned char *input2,
size_t length)
{
size_t i;
for(i = 0; i < length; i++)
*output++ = *input1++ ^ *input2++;
}
/* Increments an AES CTR buffer to prepare it for use with the
next AES block. */
void _libssh2_aes_ctr_increment(unsigned char *ctr,
size_t length)
{
unsigned char *pc;
unsigned int val, carry;
pc = ctr + length - 1;
carry = 1;
while(pc >= ctr) {
val = (unsigned int)*pc + carry;
*pc-- = val & 0xFF;
carry = val >> 8;
}
}
#ifdef WIN32
static void * (__cdecl * const volatile memset_libssh)(void *, int, size_t) =
memset;
#else
static void * (* const volatile memset_libssh)(void *, int, size_t) = memset;
#endif
void _libssh2_explicit_zero(void *buf, size_t size)
{
#if defined(HAVE_DECL_SECUREZEROMEMORY) && HAVE_DECL_SECUREZEROMEMORY
SecureZeroMemory(buf, size);
(void)memset_libssh; /* Silence unused variable warning */
#elif defined(HAVE_MEMSET_S)
(void)memset_s(buf, size, 0, size);
(void)memset_libssh; /* Silence unused variable warning */
#else
memset_libssh(buf, 0, size);
#endif
}
/* String buffer */
struct string_buf* _libssh2_string_buf_new(LIBSSH2_SESSION *session)
{
struct string_buf *ret;
ret = _libssh2_calloc(session, sizeof(*ret));
if(ret == NULL)
return NULL;
return ret;
}
void _libssh2_string_buf_free(LIBSSH2_SESSION *session, struct string_buf *buf)
{
if(buf == NULL)
return;
if(buf->data != NULL)
LIBSSH2_FREE(session, buf->data);
LIBSSH2_FREE(session, buf);
buf = NULL;
}
int _libssh2_get_u32(struct string_buf *buf, uint32_t *out)
{
if(!_libssh2_check_length(buf, 4)) {
return -1;
}
*out = _libssh2_ntohu32(buf->dataptr);
buf->dataptr += 4;
return 0;
}
int _libssh2_get_u64(struct string_buf *buf, libssh2_uint64_t *out)
{
if(!_libssh2_check_length(buf, 8)) {
return -1;
}
*out = _libssh2_ntohu64(buf->dataptr);
buf->dataptr += 8;
return 0;
}
int _libssh2_match_string(struct string_buf *buf, const char *match)
{
unsigned char *out;
size_t len = 0;
if(_libssh2_get_string(buf, &out, &len) || len != strlen(match) ||
strncmp((char *)out, match, strlen(match)) != 0) {
return -1;
}
return 0;
}
int _libssh2_get_string(struct string_buf *buf, unsigned char **outbuf,
size_t *outlen)
{
uint32_t data_len;
if(_libssh2_get_u32(buf, &data_len) != 0) {
return -1;
}
if(!_libssh2_check_length(buf, data_len)) {
return -1;
}
*outbuf = buf->dataptr;
buf->dataptr += data_len;
if(outlen)
*outlen = (size_t)data_len;
return 0;
}
int _libssh2_copy_string(LIBSSH2_SESSION *session, struct string_buf *buf,
unsigned char **outbuf, size_t *outlen)
{
size_t str_len;
unsigned char *str;
if(_libssh2_get_string(buf, &str, &str_len)) {
return -1;
}
*outbuf = LIBSSH2_ALLOC(session, str_len);
if(*outbuf) {
memcpy(*outbuf, str, str_len);
}
else {
return -1;
}
if(outlen)
*outlen = str_len;
return 0;
}
int _libssh2_get_bignum_bytes(struct string_buf *buf, unsigned char **outbuf,
size_t *outlen)
{
uint32_t data_len;
uint32_t bn_len;
unsigned char *bnptr;
if(_libssh2_get_u32(buf, &data_len)) {
return -1;
}
if(!_libssh2_check_length(buf, data_len)) {
return -1;
}
bn_len = data_len;
bnptr = buf->dataptr;
/* trim leading zeros */
while(bn_len > 0 && *bnptr == 0x00) {
bn_len--;
bnptr++;
}
*outbuf = bnptr;
buf->dataptr += data_len;
if(outlen)
*outlen = (size_t)bn_len;
return 0;
}
/* Given the current location in buf, _libssh2_check_length ensures
callers can read the next len number of bytes out of the buffer
before reading the buffer content */
int _libssh2_check_length(struct string_buf *buf, size_t len)
{
unsigned char *endp = &buf->data[buf->len];
size_t left = endp - buf->dataptr;
return ((len <= left) && (left <= buf->len));
}
/* Wrappers */
int _libssh2_bcrypt_pbkdf(const char *pass,
size_t passlen,
const uint8_t *salt,
size_t saltlen,
uint8_t *key,
size_t keylen,
unsigned int rounds)
{
/* defined in bcrypt_pbkdf.c */
return bcrypt_pbkdf(pass,
passlen,
salt,
saltlen,
key,
keylen,
rounds);
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/blf.h | #ifndef __LIBSSH2_BLF_H
#define __LIBSSH2_BLF_H
/* $OpenBSD: blf.h,v 1.7 2007/03/14 17:59:41 grunk Exp $ */
/*
* Blowfish - a fast block cipher designed by Bruce Schneier
*
* Copyright 1997 Niels Provos <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Niels Provos.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if !defined(HAVE_BCRYPT_PBKDF) && !defined(HAVE_BLH_H)
/* Schneier specifies a maximum key length of 56 bytes.
* This ensures that every key bit affects every cipher
* bit. However, the subkeys can hold up to 72 bytes.
* Warning: For normal blowfish encryption only 56 bytes
* of the key affect all cipherbits.
*/
#define BLF_N 16 /* Number of Subkeys */
#define BLF_MAXKEYLEN ((BLF_N-2)*4) /* 448 bits */
#define BLF_MAXUTILIZED ((BLF_N + 2)*4) /* 576 bits */
/* Blowfish context */
typedef struct BlowfishContext {
uint32_t S[4][256]; /* S-Boxes */
uint32_t P[BLF_N + 2]; /* Subkeys */
} blf_ctx;
/* Raw access to customized Blowfish
* blf_key is just:
* Blowfish_initstate( state )
* Blowfish_expand0state( state, key, keylen )
*/
void Blowfish_encipher(blf_ctx *, uint32_t *, uint32_t *);
void Blowfish_decipher(blf_ctx *, uint32_t *, uint32_t *);
void Blowfish_initstate(blf_ctx *);
void Blowfish_expand0state(blf_ctx *, const uint8_t *, uint16_t);
void Blowfish_expandstate
(blf_ctx *, const uint8_t *, uint16_t, const uint8_t *, uint16_t);
/* Standard Blowfish */
void blf_key(blf_ctx *, const uint8_t *, uint16_t);
void blf_enc(blf_ctx *, uint32_t *, uint16_t);
void blf_dec(blf_ctx *, uint32_t *, uint16_t);
void blf_ecb_encrypt(blf_ctx *, uint8_t *, uint32_t);
void blf_ecb_decrypt(blf_ctx *, uint8_t *, uint32_t);
void blf_cbc_encrypt(blf_ctx *, uint8_t *, uint8_t *, uint32_t);
void blf_cbc_decrypt(blf_ctx *, uint8_t *, uint8_t *, uint32_t);
/* Converts uint8_t to uint32_t */
uint32_t Blowfish_stream2word(const uint8_t *, uint16_t, uint16_t *);
/* bcrypt with pbkd */
int bcrypt_pbkdf(const char *pass, size_t passlen, const uint8_t *salt,
size_t saltlen,
uint8_t *key, size_t keylen, unsigned int rounds);
#endif /* !defined(HAVE_BCRYPT_PBKDF) && !defined(HAVE_BLH_H) */
#endif /* __LIBSSH2_BLF_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/userauth.c | /* Copyright (c) 2004-2007, Sara Golemon <[email protected]>
* Copyright (c) 2005 Mikhail Gusarov <[email protected]>
* Copyright (c) 2009-2014 by Daniel Stenberg
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include <ctype.h>
#include <stdio.h>
#include <assert.h>
/* Needed for struct iovec on some platforms */
#ifdef HAVE_SYS_UIO_H
#include <sys/uio.h>
#endif
#include "transport.h"
#include "session.h"
#include "userauth.h"
/* libssh2_userauth_list
*
* List authentication methods
* Will yield successful login if "none" happens to be allowable for this user
* Not a common configuration for any SSH server though
* username should be NULL, or a null terminated string
*/
static char *userauth_list(LIBSSH2_SESSION *session, const char *username,
unsigned int username_len)
{
static const unsigned char reply_codes[3] =
{ SSH_MSG_USERAUTH_SUCCESS, SSH_MSG_USERAUTH_FAILURE, 0 };
/* packet_type(1) + username_len(4) + service_len(4) +
service(14)"ssh-connection" + method_len(4) = 27 */
unsigned long methods_len;
unsigned char *s;
int rc;
if(session->userauth_list_state == libssh2_NB_state_idle) {
/* Zero the whole thing out */
memset(&session->userauth_list_packet_requirev_state, 0,
sizeof(session->userauth_list_packet_requirev_state));
session->userauth_list_data_len = username_len + 27;
s = session->userauth_list_data =
LIBSSH2_ALLOC(session, session->userauth_list_data_len);
if(!session->userauth_list_data) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for userauth_list");
return NULL;
}
*(s++) = SSH_MSG_USERAUTH_REQUEST;
_libssh2_store_str(&s, username, username_len);
_libssh2_store_str(&s, "ssh-connection", 14);
_libssh2_store_u32(&s, 4); /* send "none" separately */
session->userauth_list_state = libssh2_NB_state_created;
}
if(session->userauth_list_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, session->userauth_list_data,
session->userauth_list_data_len,
(unsigned char *)"none", 4);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block requesting userauth list");
return NULL;
}
/* now free the packet that was sent */
LIBSSH2_FREE(session, session->userauth_list_data);
session->userauth_list_data = NULL;
if(rc) {
_libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send userauth-none request");
session->userauth_list_state = libssh2_NB_state_idle;
return NULL;
}
session->userauth_list_state = libssh2_NB_state_sent;
}
if(session->userauth_list_state == libssh2_NB_state_sent) {
rc = _libssh2_packet_requirev(session, reply_codes,
&session->userauth_list_data,
&session->userauth_list_data_len, 0,
NULL, 0,
&session->userauth_list_packet_requirev_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block requesting userauth list");
return NULL;
}
else if(rc || (session->userauth_list_data_len < 1)) {
_libssh2_error(session, rc, "Failed getting response");
session->userauth_list_state = libssh2_NB_state_idle;
return NULL;
}
if(session->userauth_list_data[0] == SSH_MSG_USERAUTH_SUCCESS) {
/* Wow, who'dve thought... */
_libssh2_error(session, LIBSSH2_ERROR_NONE, "No error");
LIBSSH2_FREE(session, session->userauth_list_data);
session->userauth_list_data = NULL;
session->state |= LIBSSH2_STATE_AUTHENTICATED;
session->userauth_list_state = libssh2_NB_state_idle;
return NULL;
}
if(session->userauth_list_data_len < 5) {
LIBSSH2_FREE(session, session->userauth_list_data);
session->userauth_list_data = NULL;
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected packet size");
return NULL;
}
methods_len = _libssh2_ntohu32(session->userauth_list_data + 1);
if(methods_len >= session->userauth_list_data_len - 5) {
_libssh2_error(session, LIBSSH2_ERROR_OUT_OF_BOUNDARY,
"Unexpected userauth list size");
return NULL;
}
/* Do note that the memory areas overlap! */
memmove(session->userauth_list_data, session->userauth_list_data + 5,
methods_len);
session->userauth_list_data[methods_len] = '\0';
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Permitted auth methods: %s",
session->userauth_list_data);
}
session->userauth_list_state = libssh2_NB_state_idle;
return (char *) session->userauth_list_data;
}
/* libssh2_userauth_list
*
* List authentication methods
* Will yield successful login if "none" happens to be allowable for this user
* Not a common configuration for any SSH server though
* username should be NULL, or a null terminated string
*/
LIBSSH2_API char *
libssh2_userauth_list(LIBSSH2_SESSION * session, const char *user,
unsigned int user_len)
{
char *ptr;
BLOCK_ADJUST_ERRNO(ptr, session,
userauth_list(session, user, user_len));
return ptr;
}
/*
* libssh2_userauth_authenticated
*
* Returns: 0 if not yet authenticated
* 1 if already authenticated
*/
LIBSSH2_API int
libssh2_userauth_authenticated(LIBSSH2_SESSION * session)
{
return (session->state & LIBSSH2_STATE_AUTHENTICATED)?1:0;
}
/* userauth_password
* Plain ol' login
*/
static int
userauth_password(LIBSSH2_SESSION *session,
const char *username, unsigned int username_len,
const unsigned char *password, unsigned int password_len,
LIBSSH2_PASSWD_CHANGEREQ_FUNC((*passwd_change_cb)))
{
unsigned char *s;
static const unsigned char reply_codes[4] =
{ SSH_MSG_USERAUTH_SUCCESS, SSH_MSG_USERAUTH_FAILURE,
SSH_MSG_USERAUTH_PASSWD_CHANGEREQ, 0
};
int rc;
if(session->userauth_pswd_state == libssh2_NB_state_idle) {
/* Zero the whole thing out */
memset(&session->userauth_pswd_packet_requirev_state, 0,
sizeof(session->userauth_pswd_packet_requirev_state));
/*
* 40 = packet_type(1) + username_len(4) + service_len(4) +
* service(14)"ssh-connection" + method_len(4) + method(8)"password" +
* chgpwdbool(1) + password_len(4) */
session->userauth_pswd_data_len = username_len + 40;
session->userauth_pswd_data0 =
(unsigned char) ~SSH_MSG_USERAUTH_PASSWD_CHANGEREQ;
/* TODO: remove this alloc with a fixed buffer in the session
struct */
s = session->userauth_pswd_data =
LIBSSH2_ALLOC(session, session->userauth_pswd_data_len);
if(!session->userauth_pswd_data) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"userauth-password request");
}
*(s++) = SSH_MSG_USERAUTH_REQUEST;
_libssh2_store_str(&s, username, username_len);
_libssh2_store_str(&s, "ssh-connection", sizeof("ssh-connection") - 1);
_libssh2_store_str(&s, "password", sizeof("password") - 1);
*s++ = '\0';
_libssh2_store_u32(&s, password_len);
/* 'password' is sent separately */
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Attempting to login using password authentication");
session->userauth_pswd_state = libssh2_NB_state_created;
}
if(session->userauth_pswd_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, session->userauth_pswd_data,
session->userauth_pswd_data_len,
password, password_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return _libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block writing password request");
}
/* now free the sent packet */
LIBSSH2_FREE(session, session->userauth_pswd_data);
session->userauth_pswd_data = NULL;
if(rc) {
session->userauth_pswd_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send userauth-password request");
}
session->userauth_pswd_state = libssh2_NB_state_sent;
}
password_response:
if((session->userauth_pswd_state == libssh2_NB_state_sent)
|| (session->userauth_pswd_state == libssh2_NB_state_sent1)
|| (session->userauth_pswd_state == libssh2_NB_state_sent2)) {
if(session->userauth_pswd_state == libssh2_NB_state_sent) {
rc = _libssh2_packet_requirev(session, reply_codes,
&session->userauth_pswd_data,
&session->userauth_pswd_data_len,
0, NULL, 0,
&session->
userauth_pswd_packet_requirev_state);
if(rc) {
if(rc != LIBSSH2_ERROR_EAGAIN)
session->userauth_pswd_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Waiting for password response");
}
else if(session->userauth_pswd_data_len < 1) {
session->userauth_pswd_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected packet size");
}
if(session->userauth_pswd_data[0] == SSH_MSG_USERAUTH_SUCCESS) {
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Password authentication successful");
LIBSSH2_FREE(session, session->userauth_pswd_data);
session->userauth_pswd_data = NULL;
session->state |= LIBSSH2_STATE_AUTHENTICATED;
session->userauth_pswd_state = libssh2_NB_state_idle;
return 0;
}
else if(session->userauth_pswd_data[0] ==
SSH_MSG_USERAUTH_FAILURE) {
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Password authentication failed");
LIBSSH2_FREE(session, session->userauth_pswd_data);
session->userauth_pswd_data = NULL;
session->userauth_pswd_state = libssh2_NB_state_idle;
return _libssh2_error(session,
LIBSSH2_ERROR_AUTHENTICATION_FAILED,
"Authentication failed "
"(username/password)");
}
session->userauth_pswd_newpw = NULL;
session->userauth_pswd_newpw_len = 0;
session->userauth_pswd_state = libssh2_NB_state_sent1;
}
if(session->userauth_pswd_data_len < 1) {
session->userauth_pswd_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected packet size");
}
if((session->userauth_pswd_data[0] ==
SSH_MSG_USERAUTH_PASSWD_CHANGEREQ)
|| (session->userauth_pswd_data0 ==
SSH_MSG_USERAUTH_PASSWD_CHANGEREQ)) {
session->userauth_pswd_data0 = SSH_MSG_USERAUTH_PASSWD_CHANGEREQ;
if((session->userauth_pswd_state == libssh2_NB_state_sent1) ||
(session->userauth_pswd_state == libssh2_NB_state_sent2)) {
if(session->userauth_pswd_state == libssh2_NB_state_sent1) {
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Password change required");
LIBSSH2_FREE(session, session->userauth_pswd_data);
session->userauth_pswd_data = NULL;
}
if(passwd_change_cb) {
if(session->userauth_pswd_state ==
libssh2_NB_state_sent1) {
passwd_change_cb(session,
&session->userauth_pswd_newpw,
&session->userauth_pswd_newpw_len,
&session->abstract);
if(!session->userauth_pswd_newpw) {
return _libssh2_error(session,
LIBSSH2_ERROR_PASSWORD_EXPIRED,
"Password expired, and "
"callback failed");
}
/* basic data_len + newpw_len(4) */
if(username_len + password_len + 44 <= UINT_MAX) {
session->userauth_pswd_data_len =
username_len + password_len + 44;
s = session->userauth_pswd_data =
LIBSSH2_ALLOC(session,
session->userauth_pswd_data_len);
}
else {
s = session->userauth_pswd_data = NULL;
session->userauth_pswd_data_len = 0;
}
if(!session->userauth_pswd_data) {
LIBSSH2_FREE(session,
session->userauth_pswd_newpw);
session->userauth_pswd_newpw = NULL;
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory "
"for userauth password "
"change request");
}
*(s++) = SSH_MSG_USERAUTH_REQUEST;
_libssh2_store_str(&s, username, username_len);
_libssh2_store_str(&s, "ssh-connection",
sizeof("ssh-connection") - 1);
_libssh2_store_str(&s, "password",
sizeof("password") - 1);
*s++ = 0x01;
_libssh2_store_str(&s, (char *)password, password_len);
_libssh2_store_u32(&s,
session->userauth_pswd_newpw_len);
/* send session->userauth_pswd_newpw separately */
session->userauth_pswd_state = libssh2_NB_state_sent2;
}
if(session->userauth_pswd_state ==
libssh2_NB_state_sent2) {
rc = _libssh2_transport_send(session,
session->userauth_pswd_data,
session->userauth_pswd_data_len,
(unsigned char *)
session->userauth_pswd_newpw,
session->userauth_pswd_newpw_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return _libssh2_error(session,
LIBSSH2_ERROR_EAGAIN,
"Would block waiting");
}
/* free the allocated packets again */
LIBSSH2_FREE(session, session->userauth_pswd_data);
session->userauth_pswd_data = NULL;
LIBSSH2_FREE(session, session->userauth_pswd_newpw);
session->userauth_pswd_newpw = NULL;
if(rc) {
return _libssh2_error(session,
LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send userauth "
"password-change request");
}
/*
* Ugliest use of goto ever. Blame it on the
* askN => requirev migration.
*/
session->userauth_pswd_state = libssh2_NB_state_sent;
goto password_response;
}
}
}
else {
session->userauth_pswd_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_PASSWORD_EXPIRED,
"Password Expired, and no callback "
"specified");
}
}
}
/* FAILURE */
LIBSSH2_FREE(session, session->userauth_pswd_data);
session->userauth_pswd_data = NULL;
session->userauth_pswd_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_AUTHENTICATION_FAILED,
"Authentication failed");
}
/*
* libssh2_userauth_password_ex
*
* Plain ol' login
*/
LIBSSH2_API int
libssh2_userauth_password_ex(LIBSSH2_SESSION *session, const char *username,
unsigned int username_len, const char *password,
unsigned int password_len,
LIBSSH2_PASSWD_CHANGEREQ_FUNC
((*passwd_change_cb)))
{
int rc;
BLOCK_ADJUST(rc, session,
userauth_password(session, username, username_len,
(unsigned char *)password, password_len,
passwd_change_cb));
return rc;
}
static int
memory_read_publickey(LIBSSH2_SESSION * session, unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *pubkeyfiledata,
size_t pubkeyfiledata_len)
{
unsigned char *pubkey = NULL, *sp1, *sp2, *tmp;
size_t pubkey_len = pubkeyfiledata_len;
unsigned int tmp_len;
if(pubkeyfiledata_len <= 1) {
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Invalid data in public key file");
}
pubkey = LIBSSH2_ALLOC(session, pubkeyfiledata_len);
if(!pubkey) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for public key data");
}
memcpy(pubkey, pubkeyfiledata, pubkeyfiledata_len);
/*
* Remove trailing whitespace
*/
while(pubkey_len && isspace(pubkey[pubkey_len - 1]))
pubkey_len--;
if(!pubkey_len) {
LIBSSH2_FREE(session, pubkey);
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Missing public key data");
}
sp1 = memchr(pubkey, ' ', pubkey_len);
if(sp1 == NULL) {
LIBSSH2_FREE(session, pubkey);
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Invalid public key data");
}
sp1++;
sp2 = memchr(sp1, ' ', pubkey_len - (sp1 - pubkey));
if(sp2 == NULL) {
/* Assume that the id string is missing, but that it's okay */
sp2 = pubkey + pubkey_len;
}
if(libssh2_base64_decode(session, (char **) &tmp, &tmp_len,
(char *) sp1, sp2 - sp1)) {
LIBSSH2_FREE(session, pubkey);
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Invalid key data, not base64 encoded");
}
/* Wasting some bytes here (okay, more than some), but since it's likely
* to be freed soon anyway, we'll just avoid the extra free/alloc and call
* it a wash
*/
*method = pubkey;
*method_len = sp1 - pubkey - 1;
*pubkeydata = tmp;
*pubkeydata_len = tmp_len;
return 0;
}
/*
* file_read_publickey
*
* Read a public key from an id_???.pub style file
*
* Returns an allocated string containing the decoded key in *pubkeydata
* on success.
* Returns an allocated string containing the key method (e.g. "ssh-dss")
* in method on success.
*/
static int
file_read_publickey(LIBSSH2_SESSION * session, unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *pubkeyfile)
{
FILE *fd;
char c;
unsigned char *pubkey = NULL, *sp1, *sp2, *tmp;
size_t pubkey_len = 0, sp_len;
unsigned int tmp_len;
_libssh2_debug(session, LIBSSH2_TRACE_AUTH, "Loading public key file: %s",
pubkeyfile);
/* Read Public Key */
fd = fopen(pubkeyfile, FOPEN_READTEXT);
if(!fd) {
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to open public key file");
}
while(!feof(fd) && 1 == fread(&c, 1, 1, fd) && c != '\r' && c != '\n') {
pubkey_len++;
}
rewind(fd);
if(pubkey_len <= 1) {
fclose(fd);
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Invalid data in public key file");
}
pubkey = LIBSSH2_ALLOC(session, pubkey_len);
if(!pubkey) {
fclose(fd);
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for public key data");
}
if(fread(pubkey, 1, pubkey_len, fd) != pubkey_len) {
LIBSSH2_FREE(session, pubkey);
fclose(fd);
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to read public key from file");
}
fclose(fd);
/*
* Remove trailing whitespace
*/
while(pubkey_len && isspace(pubkey[pubkey_len - 1])) {
pubkey_len--;
}
if(!pubkey_len) {
LIBSSH2_FREE(session, pubkey);
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Missing public key data");
}
sp1 = memchr(pubkey, ' ', pubkey_len);
if(sp1 == NULL) {
LIBSSH2_FREE(session, pubkey);
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Invalid public key data");
}
sp1++;
sp_len = sp1 > pubkey ? (sp1 - pubkey) : 0;
sp2 = memchr(sp1, ' ', pubkey_len - sp_len);
if(sp2 == NULL) {
/* Assume that the id string is missing, but that it's okay */
sp2 = pubkey + pubkey_len;
}
if(libssh2_base64_decode(session, (char **) &tmp, &tmp_len,
(char *) sp1, sp2 - sp1)) {
LIBSSH2_FREE(session, pubkey);
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Invalid key data, not base64 encoded");
}
/* Wasting some bytes here (okay, more than some), but since it's likely
* to be freed soon anyway, we'll just avoid the extra free/alloc and call
* it a wash */
*method = pubkey;
*method_len = sp1 - pubkey - 1;
*pubkeydata = tmp;
*pubkeydata_len = tmp_len;
return 0;
}
static int
memory_read_privatekey(LIBSSH2_SESSION * session,
const LIBSSH2_HOSTKEY_METHOD ** hostkey_method,
void **hostkey_abstract,
const unsigned char *method, int method_len,
const char *privkeyfiledata, size_t privkeyfiledata_len,
const char *passphrase)
{
const LIBSSH2_HOSTKEY_METHOD **hostkey_methods_avail =
libssh2_hostkey_methods();
*hostkey_method = NULL;
*hostkey_abstract = NULL;
while(*hostkey_methods_avail && (*hostkey_methods_avail)->name) {
if((*hostkey_methods_avail)->initPEMFromMemory
&& strncmp((*hostkey_methods_avail)->name, (const char *) method,
method_len) == 0) {
*hostkey_method = *hostkey_methods_avail;
break;
}
hostkey_methods_avail++;
}
if(!*hostkey_method) {
return _libssh2_error(session, LIBSSH2_ERROR_METHOD_NONE,
"No handler for specified private key");
}
if((*hostkey_method)->
initPEMFromMemory(session, privkeyfiledata, privkeyfiledata_len,
(unsigned char *) passphrase,
hostkey_abstract)) {
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to initialize private key from memory");
}
return 0;
}
/* libssh2_file_read_privatekey
* Read a PEM encoded private key from an id_??? style file
*/
static int
file_read_privatekey(LIBSSH2_SESSION * session,
const LIBSSH2_HOSTKEY_METHOD ** hostkey_method,
void **hostkey_abstract,
const unsigned char *method, int method_len,
const char *privkeyfile, const char *passphrase)
{
const LIBSSH2_HOSTKEY_METHOD **hostkey_methods_avail =
libssh2_hostkey_methods();
_libssh2_debug(session, LIBSSH2_TRACE_AUTH, "Loading private key file: %s",
privkeyfile);
*hostkey_method = NULL;
*hostkey_abstract = NULL;
while(*hostkey_methods_avail && (*hostkey_methods_avail)->name) {
if((*hostkey_methods_avail)->initPEM
&& strncmp((*hostkey_methods_avail)->name, (const char *) method,
method_len) == 0) {
*hostkey_method = *hostkey_methods_avail;
break;
}
hostkey_methods_avail++;
}
if(!*hostkey_method) {
return _libssh2_error(session, LIBSSH2_ERROR_METHOD_NONE,
"No handler for specified private key");
}
if((*hostkey_method)->
initPEM(session, privkeyfile, (unsigned char *) passphrase,
hostkey_abstract)) {
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to initialize private key from file");
}
return 0;
}
struct privkey_file {
const char *filename;
const char *passphrase;
};
static int
sign_frommemory(LIBSSH2_SESSION *session, unsigned char **sig, size_t *sig_len,
const unsigned char *data, size_t data_len, void **abstract)
{
struct privkey_file *pk_file = (struct privkey_file *) (*abstract);
const LIBSSH2_HOSTKEY_METHOD *privkeyobj;
void *hostkey_abstract;
struct iovec datavec;
int rc;
rc = memory_read_privatekey(session, &privkeyobj, &hostkey_abstract,
session->userauth_pblc_method,
session->userauth_pblc_method_len,
pk_file->filename,
strlen(pk_file->filename),
pk_file->passphrase);
if(rc)
return rc;
libssh2_prepare_iovec(&datavec, 1);
datavec.iov_base = (void *)data;
datavec.iov_len = data_len;
if(privkeyobj->signv(session, sig, sig_len, 1, &datavec,
&hostkey_abstract)) {
if(privkeyobj->dtor) {
privkeyobj->dtor(session, &hostkey_abstract);
}
return -1;
}
if(privkeyobj->dtor) {
privkeyobj->dtor(session, &hostkey_abstract);
}
return 0;
}
static int
sign_fromfile(LIBSSH2_SESSION *session, unsigned char **sig, size_t *sig_len,
const unsigned char *data, size_t data_len, void **abstract)
{
struct privkey_file *privkey_file = (struct privkey_file *) (*abstract);
const LIBSSH2_HOSTKEY_METHOD *privkeyobj;
void *hostkey_abstract;
struct iovec datavec;
int rc;
rc = file_read_privatekey(session, &privkeyobj, &hostkey_abstract,
session->userauth_pblc_method,
session->userauth_pblc_method_len,
privkey_file->filename,
privkey_file->passphrase);
if(rc)
return rc;
libssh2_prepare_iovec(&datavec, 1);
datavec.iov_base = (void *)data;
datavec.iov_len = data_len;
if(privkeyobj->signv(session, sig, sig_len, 1, &datavec,
&hostkey_abstract)) {
if(privkeyobj->dtor) {
privkeyobj->dtor(session, &hostkey_abstract);
}
return -1;
}
if(privkeyobj->dtor) {
privkeyobj->dtor(session, &hostkey_abstract);
}
return 0;
}
/* userauth_hostbased_fromfile
* Authenticate using a keypair found in the named files
*/
static int
userauth_hostbased_fromfile(LIBSSH2_SESSION *session,
const char *username, size_t username_len,
const char *publickey, const char *privatekey,
const char *passphrase, const char *hostname,
size_t hostname_len,
const char *local_username,
size_t local_username_len)
{
int rc;
if(session->userauth_host_state == libssh2_NB_state_idle) {
const LIBSSH2_HOSTKEY_METHOD *privkeyobj;
unsigned char *pubkeydata = NULL;
unsigned char *sig = NULL;
size_t pubkeydata_len = 0;
size_t sig_len = 0;
void *abstract;
unsigned char buf[5];
struct iovec datavec[4];
/* Zero the whole thing out */
memset(&session->userauth_host_packet_requirev_state, 0,
sizeof(session->userauth_host_packet_requirev_state));
if(publickey) {
rc = file_read_publickey(session, &session->userauth_host_method,
&session->userauth_host_method_len,
&pubkeydata, &pubkeydata_len, publickey);
if(rc)
/* Note: file_read_publickey() calls _libssh2_error() */
return rc;
}
else {
/* Compute public key from private key. */
rc = _libssh2_pub_priv_keyfile(session,
&session->userauth_host_method,
&session->userauth_host_method_len,
&pubkeydata, &pubkeydata_len,
privatekey, passphrase);
if(rc)
/* libssh2_pub_priv_keyfile calls _libssh2_error() */
return rc;
}
/*
* 52 = packet_type(1) + username_len(4) + servicename_len(4) +
* service_name(14)"ssh-connection" + authmethod_len(4) +
* authmethod(9)"hostbased" + method_len(4) + pubkeydata_len(4) +
* hostname_len(4) + local_username_len(4)
*/
session->userauth_host_packet_len =
username_len + session->userauth_host_method_len + hostname_len +
local_username_len + pubkeydata_len + 52;
/*
* Preallocate space for an overall length, method name again,
* and the signature, which won't be any larger than the size of
* the publickeydata itself
*/
session->userauth_host_s = session->userauth_host_packet =
LIBSSH2_ALLOC(session,
session->userauth_host_packet_len + 4 +
(4 + session->userauth_host_method_len) +
(4 + pubkeydata_len));
if(!session->userauth_host_packet) {
LIBSSH2_FREE(session, session->userauth_host_method);
session->userauth_host_method = NULL;
LIBSSH2_FREE(session, pubkeydata);
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Out of memory");
}
*(session->userauth_host_s++) = SSH_MSG_USERAUTH_REQUEST;
_libssh2_store_str(&session->userauth_host_s, username, username_len);
_libssh2_store_str(&session->userauth_host_s, "ssh-connection", 14);
_libssh2_store_str(&session->userauth_host_s, "hostbased", 9);
_libssh2_store_str(&session->userauth_host_s,
(const char *)session->userauth_host_method,
session->userauth_host_method_len);
_libssh2_store_str(&session->userauth_host_s, (const char *)pubkeydata,
pubkeydata_len);
LIBSSH2_FREE(session, pubkeydata);
_libssh2_store_str(&session->userauth_host_s, hostname, hostname_len);
_libssh2_store_str(&session->userauth_host_s, local_username,
local_username_len);
rc = file_read_privatekey(session, &privkeyobj, &abstract,
session->userauth_host_method,
session->userauth_host_method_len,
privatekey, passphrase);
if(rc) {
/* Note: file_read_privatekey() calls _libssh2_error() */
LIBSSH2_FREE(session, session->userauth_host_method);
session->userauth_host_method = NULL;
LIBSSH2_FREE(session, session->userauth_host_packet);
session->userauth_host_packet = NULL;
return rc;
}
_libssh2_htonu32(buf, session->session_id_len);
libssh2_prepare_iovec(datavec, 4);
datavec[0].iov_base = (void *)buf;
datavec[0].iov_len = 4;
datavec[1].iov_base = (void *)session->session_id;
datavec[1].iov_len = session->session_id_len;
datavec[2].iov_base = (void *)session->userauth_host_packet;
datavec[2].iov_len = session->userauth_host_packet_len;
if(privkeyobj && privkeyobj->signv &&
privkeyobj->signv(session, &sig, &sig_len, 3,
datavec, &abstract)) {
LIBSSH2_FREE(session, session->userauth_host_method);
session->userauth_host_method = NULL;
LIBSSH2_FREE(session, session->userauth_host_packet);
session->userauth_host_packet = NULL;
if(privkeyobj->dtor) {
privkeyobj->dtor(session, &abstract);
}
return -1;
}
if(privkeyobj && privkeyobj->dtor) {
privkeyobj->dtor(session, &abstract);
}
if(sig_len > pubkeydata_len) {
unsigned char *newpacket;
/* Should *NEVER* happen, but...well.. better safe than sorry */
newpacket = LIBSSH2_REALLOC(session, session->userauth_host_packet,
session->userauth_host_packet_len + 4 +
(4 + session->userauth_host_method_len)
+ (4 + sig_len)); /* PK sigblob */
if(!newpacket) {
LIBSSH2_FREE(session, sig);
LIBSSH2_FREE(session, session->userauth_host_packet);
session->userauth_host_packet = NULL;
LIBSSH2_FREE(session, session->userauth_host_method);
session->userauth_host_method = NULL;
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Failed allocating additional space for "
"userauth-hostbased packet");
}
session->userauth_host_packet = newpacket;
}
session->userauth_host_s =
session->userauth_host_packet + session->userauth_host_packet_len;
_libssh2_store_u32(&session->userauth_host_s,
4 + session->userauth_host_method_len +
4 + sig_len);
_libssh2_store_str(&session->userauth_host_s,
(const char *)session->userauth_host_method,
session->userauth_host_method_len);
LIBSSH2_FREE(session, session->userauth_host_method);
session->userauth_host_method = NULL;
_libssh2_store_str(&session->userauth_host_s, (const char *)sig,
sig_len);
LIBSSH2_FREE(session, sig);
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Attempting hostbased authentication");
session->userauth_host_state = libssh2_NB_state_created;
}
if(session->userauth_host_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, session->userauth_host_packet,
session->userauth_host_s -
session->userauth_host_packet,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return _libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block");
}
else if(rc) {
LIBSSH2_FREE(session, session->userauth_host_packet);
session->userauth_host_packet = NULL;
session->userauth_host_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send userauth-hostbased request");
}
LIBSSH2_FREE(session, session->userauth_host_packet);
session->userauth_host_packet = NULL;
session->userauth_host_state = libssh2_NB_state_sent;
}
if(session->userauth_host_state == libssh2_NB_state_sent) {
static const unsigned char reply_codes[3] =
{ SSH_MSG_USERAUTH_SUCCESS, SSH_MSG_USERAUTH_FAILURE, 0 };
size_t data_len;
rc = _libssh2_packet_requirev(session, reply_codes,
&session->userauth_host_data,
&data_len, 0, NULL, 0,
&session->
userauth_host_packet_requirev_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return _libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block");
}
session->userauth_host_state = libssh2_NB_state_idle;
if(rc || data_len < 1) {
return _libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED,
"Auth failed");
}
if(session->userauth_host_data[0] == SSH_MSG_USERAUTH_SUCCESS) {
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Hostbased authentication successful");
/* We are us and we've proved it. */
LIBSSH2_FREE(session, session->userauth_host_data);
session->userauth_host_data = NULL;
session->state |= LIBSSH2_STATE_AUTHENTICATED;
return 0;
}
}
/* This public key is not allowed for this user on this server */
LIBSSH2_FREE(session, session->userauth_host_data);
session->userauth_host_data = NULL;
return _libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED,
"Invalid signature for supplied public key, or bad "
"username/public key combination");
}
/* libssh2_userauth_hostbased_fromfile_ex
* Authenticate using a keypair found in the named files
*/
LIBSSH2_API int
libssh2_userauth_hostbased_fromfile_ex(LIBSSH2_SESSION *session,
const char *user,
unsigned int user_len,
const char *publickey,
const char *privatekey,
const char *passphrase,
const char *host,
unsigned int host_len,
const char *localuser,
unsigned int localuser_len)
{
int rc;
BLOCK_ADJUST(rc, session,
userauth_hostbased_fromfile(session, user, user_len,
publickey, privatekey,
passphrase, host, host_len,
localuser, localuser_len));
return rc;
}
static int plain_method_len(const char *method, size_t method_len)
{
if(!strncmp("[email protected]",
method,
method_len) ||
!strncmp("[email protected]",
method,
method_len) ||
!strncmp("[email protected]",
method,
method_len)) {
return 19;
}
return method_len;
}
int
_libssh2_userauth_publickey(LIBSSH2_SESSION *session,
const char *username,
unsigned int username_len,
const unsigned char *pubkeydata,
unsigned long pubkeydata_len,
LIBSSH2_USERAUTH_PUBLICKEY_SIGN_FUNC
((*sign_callback)),
void *abstract)
{
unsigned char reply_codes[4] =
{ SSH_MSG_USERAUTH_SUCCESS, SSH_MSG_USERAUTH_FAILURE,
SSH_MSG_USERAUTH_PK_OK, 0
};
int rc;
unsigned char *s;
if(session->userauth_pblc_state == libssh2_NB_state_idle) {
/*
* The call to _libssh2_ntohu32 later relies on pubkeydata having at
* least 4 valid bytes containing the length of the method name.
*/
if(pubkeydata_len < 4)
return _libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED,
"Invalid public key, too short");
/* Zero the whole thing out */
memset(&session->userauth_pblc_packet_requirev_state, 0,
sizeof(session->userauth_pblc_packet_requirev_state));
/*
* As an optimisation, userauth_publickey_fromfile reuses a
* previously allocated copy of the method name to avoid an extra
* allocation/free.
* For other uses, we allocate and populate it here.
*/
if(!session->userauth_pblc_method) {
session->userauth_pblc_method_len = _libssh2_ntohu32(pubkeydata);
if(session->userauth_pblc_method_len > pubkeydata_len - 4)
/* the method length simply cannot be longer than the entire
passed in data, so we use this to detect crazy input
data */
return _libssh2_error(session,
LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED,
"Invalid public key");
session->userauth_pblc_method =
LIBSSH2_ALLOC(session, session->userauth_pblc_method_len);
if(!session->userauth_pblc_method) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory "
"for public key data");
}
memcpy(session->userauth_pblc_method, pubkeydata + 4,
session->userauth_pblc_method_len);
}
/*
* The length of the method name read from plaintext prefix in the
* file must match length embedded in the key.
* TODO: The data should match too but we don't check that. Should we?
*/
else if(session->userauth_pblc_method_len !=
_libssh2_ntohu32(pubkeydata))
return _libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED,
"Invalid public key");
/*
* 45 = packet_type(1) + username_len(4) + servicename_len(4) +
* service_name(14)"ssh-connection" + authmethod_len(4) +
* authmethod(9)"publickey" + sig_included(1)'\0' + algmethod_len(4) +
* publickey_len(4)
*/
session->userauth_pblc_packet_len =
username_len + session->userauth_pblc_method_len + pubkeydata_len +
45;
/*
* Preallocate space for an overall length, method name again, and the
* signature, which won't be any larger than the size of the
* publickeydata itself.
*
* Note that the 'pubkeydata_len' extra bytes allocated here will not
* be used in this first send, but will be used in the later one where
* this same allocation is re-used.
*/
s = session->userauth_pblc_packet =
LIBSSH2_ALLOC(session,
session->userauth_pblc_packet_len + 4 +
(4 + session->userauth_pblc_method_len)
+ (4 + pubkeydata_len));
if(!session->userauth_pblc_packet) {
LIBSSH2_FREE(session, session->userauth_pblc_method);
session->userauth_pblc_method = NULL;
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Out of memory");
}
*s++ = SSH_MSG_USERAUTH_REQUEST;
_libssh2_store_str(&s, username, username_len);
_libssh2_store_str(&s, "ssh-connection", 14);
_libssh2_store_str(&s, "publickey", 9);
session->userauth_pblc_b = s;
/* Not sending signature with *this* packet */
*s++ = 0;
_libssh2_store_str(&s, (const char *)session->userauth_pblc_method,
session->userauth_pblc_method_len);
_libssh2_store_str(&s, (const char *)pubkeydata, pubkeydata_len);
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Attempting publickey authentication");
session->userauth_pblc_state = libssh2_NB_state_created;
}
if(session->userauth_pblc_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, session->userauth_pblc_packet,
session->userauth_pblc_packet_len,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN)
return _libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block");
else if(rc) {
LIBSSH2_FREE(session, session->userauth_pblc_packet);
session->userauth_pblc_packet = NULL;
LIBSSH2_FREE(session, session->userauth_pblc_method);
session->userauth_pblc_method = NULL;
session->userauth_pblc_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send userauth-publickey request");
}
session->userauth_pblc_state = libssh2_NB_state_sent;
}
if(session->userauth_pblc_state == libssh2_NB_state_sent) {
rc = _libssh2_packet_requirev(session, reply_codes,
&session->userauth_pblc_data,
&session->userauth_pblc_data_len, 0,
NULL, 0,
&session->
userauth_pblc_packet_requirev_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return _libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block");
}
else if(rc || (session->userauth_pblc_data_len < 1)) {
LIBSSH2_FREE(session, session->userauth_pblc_packet);
session->userauth_pblc_packet = NULL;
LIBSSH2_FREE(session, session->userauth_pblc_method);
session->userauth_pblc_method = NULL;
session->userauth_pblc_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED,
"Waiting for USERAUTH response");
}
if(session->userauth_pblc_data[0] == SSH_MSG_USERAUTH_SUCCESS) {
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Pubkey authentication prematurely successful");
/*
* God help any SSH server that allows an UNVERIFIED
* public key to validate the user
*/
LIBSSH2_FREE(session, session->userauth_pblc_data);
session->userauth_pblc_data = NULL;
LIBSSH2_FREE(session, session->userauth_pblc_packet);
session->userauth_pblc_packet = NULL;
LIBSSH2_FREE(session, session->userauth_pblc_method);
session->userauth_pblc_method = NULL;
session->state |= LIBSSH2_STATE_AUTHENTICATED;
session->userauth_pblc_state = libssh2_NB_state_idle;
return 0;
}
if(session->userauth_pblc_data[0] == SSH_MSG_USERAUTH_FAILURE) {
/* This public key is not allowed for this user on this server */
LIBSSH2_FREE(session, session->userauth_pblc_data);
session->userauth_pblc_data = NULL;
LIBSSH2_FREE(session, session->userauth_pblc_packet);
session->userauth_pblc_packet = NULL;
LIBSSH2_FREE(session, session->userauth_pblc_method);
session->userauth_pblc_method = NULL;
session->userauth_pblc_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_AUTHENTICATION_FAILED,
"Username/PublicKey combination invalid");
}
/* Semi-Success! */
LIBSSH2_FREE(session, session->userauth_pblc_data);
session->userauth_pblc_data = NULL;
*session->userauth_pblc_b = 0x01;
session->userauth_pblc_state = libssh2_NB_state_sent1;
}
if(session->userauth_pblc_state == libssh2_NB_state_sent1) {
unsigned char *buf;
unsigned char *sig;
size_t sig_len;
s = buf = LIBSSH2_ALLOC(session, 4 + session->session_id_len
+ session->userauth_pblc_packet_len);
if(!buf) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"userauth-publickey signed data");
}
_libssh2_store_str(&s, (const char *)session->session_id,
session->session_id_len);
memcpy(s, session->userauth_pblc_packet,
session->userauth_pblc_packet_len);
s += session->userauth_pblc_packet_len;
rc = sign_callback(session, &sig, &sig_len, buf, s - buf, abstract);
LIBSSH2_FREE(session, buf);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return _libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block");
}
else if(rc) {
LIBSSH2_FREE(session, session->userauth_pblc_method);
session->userauth_pblc_method = NULL;
LIBSSH2_FREE(session, session->userauth_pblc_packet);
session->userauth_pblc_packet = NULL;
session->userauth_pblc_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED,
"Callback returned error");
}
/*
* If this function was restarted, pubkeydata_len might still be 0
* which will cause an unnecessary but harmless realloc here.
*/
if(sig_len > pubkeydata_len) {
unsigned char *newpacket;
/* Should *NEVER* happen, but...well.. better safe than sorry */
newpacket = LIBSSH2_REALLOC(session,
session->userauth_pblc_packet,
session->userauth_pblc_packet_len + 4 +
(4 + session->userauth_pblc_method_len)
+ (4 + sig_len)); /* PK sigblob */
if(!newpacket) {
LIBSSH2_FREE(session, sig);
LIBSSH2_FREE(session, session->userauth_pblc_packet);
session->userauth_pblc_packet = NULL;
LIBSSH2_FREE(session, session->userauth_pblc_method);
session->userauth_pblc_method = NULL;
session->userauth_pblc_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Failed allocating additional space for "
"userauth-publickey packet");
}
session->userauth_pblc_packet = newpacket;
}
s = session->userauth_pblc_packet + session->userauth_pblc_packet_len;
session->userauth_pblc_b = NULL;
session->userauth_pblc_method_len =
plain_method_len((const char *)session->userauth_pblc_method,
session->userauth_pblc_method_len);
_libssh2_store_u32(&s,
4 + session->userauth_pblc_method_len + 4 +
sig_len);
_libssh2_store_str(&s, (const char *)session->userauth_pblc_method,
session->userauth_pblc_method_len);
LIBSSH2_FREE(session, session->userauth_pblc_method);
session->userauth_pblc_method = NULL;
_libssh2_store_str(&s, (const char *)sig, sig_len);
LIBSSH2_FREE(session, sig);
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Attempting publickey authentication -- phase 2");
session->userauth_pblc_s = s;
session->userauth_pblc_state = libssh2_NB_state_sent2;
}
if(session->userauth_pblc_state == libssh2_NB_state_sent2) {
rc = _libssh2_transport_send(session, session->userauth_pblc_packet,
session->userauth_pblc_s -
session->userauth_pblc_packet,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return _libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block");
}
else if(rc) {
LIBSSH2_FREE(session, session->userauth_pblc_packet);
session->userauth_pblc_packet = NULL;
session->userauth_pblc_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send userauth-publickey request");
}
LIBSSH2_FREE(session, session->userauth_pblc_packet);
session->userauth_pblc_packet = NULL;
session->userauth_pblc_state = libssh2_NB_state_sent3;
}
/* PK_OK is no longer valid */
reply_codes[2] = 0;
rc = _libssh2_packet_requirev(session, reply_codes,
&session->userauth_pblc_data,
&session->userauth_pblc_data_len, 0, NULL, 0,
&session->userauth_pblc_packet_requirev_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return _libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block requesting userauth list");
}
else if(rc || session->userauth_pblc_data_len < 1) {
session->userauth_pblc_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED,
"Waiting for publickey USERAUTH response");
}
if(session->userauth_pblc_data[0] == SSH_MSG_USERAUTH_SUCCESS) {
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Publickey authentication successful");
/* We are us and we've proved it. */
LIBSSH2_FREE(session, session->userauth_pblc_data);
session->userauth_pblc_data = NULL;
session->state |= LIBSSH2_STATE_AUTHENTICATED;
session->userauth_pblc_state = libssh2_NB_state_idle;
return 0;
}
/* This public key is not allowed for this user on this server */
LIBSSH2_FREE(session, session->userauth_pblc_data);
session->userauth_pblc_data = NULL;
session->userauth_pblc_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED,
"Invalid signature for supplied public key, or bad "
"username/public key combination");
}
/*
* userauth_publickey_frommemory
* Authenticate using a keypair from memory
*/
static int
userauth_publickey_frommemory(LIBSSH2_SESSION *session,
const char *username,
size_t username_len,
const char *publickeydata,
size_t publickeydata_len,
const char *privatekeydata,
size_t privatekeydata_len,
const char *passphrase)
{
unsigned char *pubkeydata = NULL;
size_t pubkeydata_len = 0;
struct privkey_file privkey_file;
void *abstract = &privkey_file;
int rc;
privkey_file.filename = privatekeydata;
privkey_file.passphrase = passphrase;
if(session->userauth_pblc_state == libssh2_NB_state_idle) {
if(publickeydata_len && publickeydata) {
rc = memory_read_publickey(session, &session->userauth_pblc_method,
&session->userauth_pblc_method_len,
&pubkeydata, &pubkeydata_len,
publickeydata, publickeydata_len);
if(rc)
return rc;
}
else if(privatekeydata_len && privatekeydata) {
/* Compute public key from private key. */
rc = _libssh2_pub_priv_keyfilememory(session,
&session->userauth_pblc_method,
&session->userauth_pblc_method_len,
&pubkeydata, &pubkeydata_len,
privatekeydata, privatekeydata_len,
passphrase);
if(rc)
return rc;
}
else {
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Invalid data in public and private key.");
}
}
rc = _libssh2_userauth_publickey(session, username, username_len,
pubkeydata, pubkeydata_len,
sign_frommemory, &abstract);
if(pubkeydata)
LIBSSH2_FREE(session, pubkeydata);
return rc;
}
/*
* userauth_publickey_fromfile
* Authenticate using a keypair found in the named files
*/
static int
userauth_publickey_fromfile(LIBSSH2_SESSION *session,
const char *username,
size_t username_len,
const char *publickey,
const char *privatekey,
const char *passphrase)
{
unsigned char *pubkeydata = NULL;
size_t pubkeydata_len = 0;
struct privkey_file privkey_file;
void *abstract = &privkey_file;
int rc;
privkey_file.filename = privatekey;
privkey_file.passphrase = passphrase;
if(session->userauth_pblc_state == libssh2_NB_state_idle) {
if(publickey) {
rc = file_read_publickey(session, &session->userauth_pblc_method,
&session->userauth_pblc_method_len,
&pubkeydata, &pubkeydata_len, publickey);
if(rc)
return rc;
}
else {
/* Compute public key from private key. */
rc = _libssh2_pub_priv_keyfile(session,
&session->userauth_pblc_method,
&session->userauth_pblc_method_len,
&pubkeydata, &pubkeydata_len,
privatekey, passphrase);
/* _libssh2_pub_priv_keyfile calls _libssh2_error() */
if(rc)
return rc;
}
}
rc = _libssh2_userauth_publickey(session, username, username_len,
pubkeydata, pubkeydata_len,
sign_fromfile, &abstract);
if(pubkeydata)
LIBSSH2_FREE(session, pubkeydata);
return rc;
}
/* libssh2_userauth_publickey_frommemory
* Authenticate using a keypair from memory
*/
LIBSSH2_API int
libssh2_userauth_publickey_frommemory(LIBSSH2_SESSION *session,
const char *user,
size_t user_len,
const char *publickeyfiledata,
size_t publickeyfiledata_len,
const char *privatekeyfiledata,
size_t privatekeyfiledata_len,
const char *passphrase)
{
int rc;
if(NULL == passphrase)
/* if given a NULL pointer, make it point to a zero-length
string to save us from having to check this all over */
passphrase = "";
BLOCK_ADJUST(rc, session,
userauth_publickey_frommemory(session, user, user_len,
publickeyfiledata,
publickeyfiledata_len,
privatekeyfiledata,
privatekeyfiledata_len,
passphrase));
return rc;
}
/* libssh2_userauth_publickey_fromfile_ex
* Authenticate using a keypair found in the named files
*/
LIBSSH2_API int
libssh2_userauth_publickey_fromfile_ex(LIBSSH2_SESSION *session,
const char *user,
unsigned int user_len,
const char *publickey,
const char *privatekey,
const char *passphrase)
{
int rc;
if(NULL == passphrase)
/* if given a NULL pointer, make it point to a zero-length
string to save us from having to check this all over */
passphrase = "";
BLOCK_ADJUST(rc, session,
userauth_publickey_fromfile(session, user, user_len,
publickey, privatekey,
passphrase));
return rc;
}
/* libssh2_userauth_publickey_ex
* Authenticate using an external callback function
*/
LIBSSH2_API int
libssh2_userauth_publickey(LIBSSH2_SESSION *session,
const char *user,
const unsigned char *pubkeydata,
size_t pubkeydata_len,
LIBSSH2_USERAUTH_PUBLICKEY_SIGN_FUNC
((*sign_callback)),
void **abstract)
{
int rc;
if(!session)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, session,
_libssh2_userauth_publickey(session, user, strlen(user),
pubkeydata, pubkeydata_len,
sign_callback, abstract));
return rc;
}
/*
* userauth_keyboard_interactive
*
* Authenticate using a challenge-response authentication
*/
static int
userauth_keyboard_interactive(LIBSSH2_SESSION * session,
const char *username,
unsigned int username_len,
LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC
((*response_callback)))
{
unsigned char *s;
int rc;
static const unsigned char reply_codes[4] = {
SSH_MSG_USERAUTH_SUCCESS,
SSH_MSG_USERAUTH_FAILURE, SSH_MSG_USERAUTH_INFO_REQUEST, 0
};
unsigned int language_tag_len;
unsigned int i;
if(session->userauth_kybd_state == libssh2_NB_state_idle) {
session->userauth_kybd_auth_name = NULL;
session->userauth_kybd_auth_instruction = NULL;
session->userauth_kybd_num_prompts = 0;
session->userauth_kybd_auth_failure = 1;
session->userauth_kybd_prompts = NULL;
session->userauth_kybd_responses = NULL;
/* Zero the whole thing out */
memset(&session->userauth_kybd_packet_requirev_state, 0,
sizeof(session->userauth_kybd_packet_requirev_state));
session->userauth_kybd_packet_len =
1 /* byte SSH_MSG_USERAUTH_REQUEST */
+ 4 + username_len /* string user name (ISO-10646 UTF-8, as
defined in [RFC-3629]) */
+ 4 + 14 /* string service name (US-ASCII) */
+ 4 + 20 /* string "keyboard-interactive" (US-ASCII) */
+ 4 + 0 /* string language tag (as defined in
[RFC-3066]) */
+ 4 + 0 /* string submethods (ISO-10646 UTF-8) */
;
session->userauth_kybd_data = s =
LIBSSH2_ALLOC(session, session->userauth_kybd_packet_len);
if(!s) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"keyboard-interactive authentication");
}
*s++ = SSH_MSG_USERAUTH_REQUEST;
/* user name */
_libssh2_store_str(&s, username, username_len);
/* service name */
_libssh2_store_str(&s, "ssh-connection", sizeof("ssh-connection") - 1);
/* "keyboard-interactive" */
_libssh2_store_str(&s, "keyboard-interactive",
sizeof("keyboard-interactive") - 1);
/* language tag */
_libssh2_store_u32(&s, 0);
/* submethods */
_libssh2_store_u32(&s, 0);
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Attempting keyboard-interactive authentication");
session->userauth_kybd_state = libssh2_NB_state_created;
}
if(session->userauth_kybd_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, session->userauth_kybd_data,
session->userauth_kybd_packet_len,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return _libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block");
}
else if(rc) {
LIBSSH2_FREE(session, session->userauth_kybd_data);
session->userauth_kybd_data = NULL;
session->userauth_kybd_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send keyboard-interactive"
" request");
}
LIBSSH2_FREE(session, session->userauth_kybd_data);
session->userauth_kybd_data = NULL;
session->userauth_kybd_state = libssh2_NB_state_sent;
}
for(;;) {
if(session->userauth_kybd_state == libssh2_NB_state_sent) {
rc = _libssh2_packet_requirev(session, reply_codes,
&session->userauth_kybd_data,
&session->userauth_kybd_data_len,
0, NULL, 0,
&session->
userauth_kybd_packet_requirev_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return _libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block");
}
else if(rc || session->userauth_kybd_data_len < 1) {
session->userauth_kybd_state = libssh2_NB_state_idle;
return _libssh2_error(session,
LIBSSH2_ERROR_AUTHENTICATION_FAILED,
"Waiting for keyboard "
"USERAUTH response");
}
if(session->userauth_kybd_data[0] == SSH_MSG_USERAUTH_SUCCESS) {
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Keyboard-interactive "
"authentication successful");
LIBSSH2_FREE(session, session->userauth_kybd_data);
session->userauth_kybd_data = NULL;
session->state |= LIBSSH2_STATE_AUTHENTICATED;
session->userauth_kybd_state = libssh2_NB_state_idle;
return 0;
}
if(session->userauth_kybd_data[0] == SSH_MSG_USERAUTH_FAILURE) {
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Keyboard-interactive authentication failed");
LIBSSH2_FREE(session, session->userauth_kybd_data);
session->userauth_kybd_data = NULL;
session->userauth_kybd_state = libssh2_NB_state_idle;
return _libssh2_error(session,
LIBSSH2_ERROR_AUTHENTICATION_FAILED,
"Authentication failed "
"(keyboard-interactive)");
}
/* server requested PAM-like conversation */
s = session->userauth_kybd_data + 1;
if(session->userauth_kybd_data_len >= 5) {
/* string name (ISO-10646 UTF-8) */
session->userauth_kybd_auth_name_len = _libssh2_ntohu32(s);
s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"userauth keyboard data buffer too small"
"to get length");
goto cleanup;
}
if(session->userauth_kybd_auth_name_len) {
session->userauth_kybd_auth_name =
LIBSSH2_ALLOC(session,
session->userauth_kybd_auth_name_len);
if(!session->userauth_kybd_auth_name) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"keyboard-interactive 'name' "
"request field");
goto cleanup;
}
if(s + session->userauth_list_data_len <=
session->userauth_kybd_data +
session->userauth_kybd_data_len) {
memcpy(session->userauth_kybd_auth_name, s,
session->userauth_kybd_auth_name_len);
s += session->userauth_kybd_auth_name_len;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"userauth keyboard data buffer too small"
"for auth name");
goto cleanup;
}
}
if(s + 4 <= session->userauth_kybd_data +
session->userauth_kybd_data_len) {
/* string instruction (ISO-10646 UTF-8) */
session->userauth_kybd_auth_instruction_len =
_libssh2_ntohu32(s);
s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"userauth keyboard data buffer too small"
"for auth instruction length");
goto cleanup;
}
if(session->userauth_kybd_auth_instruction_len) {
session->userauth_kybd_auth_instruction =
LIBSSH2_ALLOC(session,
session->userauth_kybd_auth_instruction_len);
if(!session->userauth_kybd_auth_instruction) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"keyboard-interactive 'instruction' "
"request field");
goto cleanup;
}
if(s + session->userauth_kybd_auth_instruction_len <=
session->userauth_kybd_data +
session->userauth_kybd_data_len) {
memcpy(session->userauth_kybd_auth_instruction, s,
session->userauth_kybd_auth_instruction_len);
s += session->userauth_kybd_auth_instruction_len;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"userauth keyboard data buffer too small"
"for auth instruction");
goto cleanup;
}
}
if(s + 4 <= session->userauth_kybd_data +
session->userauth_kybd_data_len) {
/* string language tag (as defined in [RFC-3066]) */
language_tag_len = _libssh2_ntohu32(s);
s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"userauth keyboard data buffer too small"
"for auth language tag length");
goto cleanup;
}
if(s + language_tag_len <= session->userauth_kybd_data +
session->userauth_kybd_data_len) {
/* ignoring this field as deprecated */
s += language_tag_len;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"userauth keyboard data buffer too small"
"for auth language tag");
goto cleanup;
}
if(s + 4 <= session->userauth_kybd_data +
session->userauth_kybd_data_len) {
/* int num-prompts */
session->userauth_kybd_num_prompts = _libssh2_ntohu32(s);
s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"userauth keyboard data buffer too small"
"for auth num keyboard prompts");
goto cleanup;
}
if(session->userauth_kybd_num_prompts > 100) {
_libssh2_error(session, LIBSSH2_ERROR_OUT_OF_BOUNDARY,
"Too many replies for "
"keyboard-interactive prompts");
goto cleanup;
}
if(session->userauth_kybd_num_prompts) {
session->userauth_kybd_prompts =
LIBSSH2_CALLOC(session,
sizeof(LIBSSH2_USERAUTH_KBDINT_PROMPT) *
session->userauth_kybd_num_prompts);
if(!session->userauth_kybd_prompts) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"keyboard-interactive prompts array");
goto cleanup;
}
session->userauth_kybd_responses =
LIBSSH2_CALLOC(session,
sizeof(LIBSSH2_USERAUTH_KBDINT_RESPONSE) *
session->userauth_kybd_num_prompts);
if(!session->userauth_kybd_responses) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"keyboard-interactive responses array");
goto cleanup;
}
for(i = 0; i < session->userauth_kybd_num_prompts; i++) {
if(s + 4 <= session->userauth_kybd_data +
session->userauth_kybd_data_len) {
/* string prompt[1] (ISO-10646 UTF-8) */
session->userauth_kybd_prompts[i].length =
_libssh2_ntohu32(s);
s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"userauth keyboard data buffer too "
"small for auth keyboard "
"prompt length");
goto cleanup;
}
session->userauth_kybd_prompts[i].text =
LIBSSH2_CALLOC(session,
session->userauth_kybd_prompts[i].
length);
if(!session->userauth_kybd_prompts[i].text) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"keyboard-interactive prompt message");
goto cleanup;
}
if(s + session->userauth_kybd_prompts[i].length <=
session->userauth_kybd_data +
session->userauth_kybd_data_len) {
memcpy(session->userauth_kybd_prompts[i].text, s,
session->userauth_kybd_prompts[i].length);
s += session->userauth_kybd_prompts[i].length;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"userauth keyboard data buffer too "
"small for auth keyboard prompt");
goto cleanup;
}
if(s < session->userauth_kybd_data +
session->userauth_kybd_data_len) {
/* boolean echo[1] */
session->userauth_kybd_prompts[i].echo = *s++;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"userauth keyboard data buffer too "
"small for auth keyboard prompt echo");
goto cleanup;
}
}
}
response_callback(session->userauth_kybd_auth_name,
session->userauth_kybd_auth_name_len,
session->userauth_kybd_auth_instruction,
session->userauth_kybd_auth_instruction_len,
session->userauth_kybd_num_prompts,
session->userauth_kybd_prompts,
session->userauth_kybd_responses,
&session->abstract);
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Keyboard-interactive response callback function"
" invoked");
session->userauth_kybd_packet_len =
1 /* byte SSH_MSG_USERAUTH_INFO_RESPONSE */
+ 4 /* int num-responses */
;
for(i = 0; i < session->userauth_kybd_num_prompts; i++) {
/* string response[1] (ISO-10646 UTF-8) */
if(session->userauth_kybd_responses[i].length <=
(SIZE_MAX - 4 - session->userauth_kybd_packet_len) ) {
session->userauth_kybd_packet_len +=
4 + session->userauth_kybd_responses[i].length;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for keyboard-"
"interactive response packet");
goto cleanup;
}
}
/* A new userauth_kybd_data area is to be allocated, free the
former one. */
LIBSSH2_FREE(session, session->userauth_kybd_data);
session->userauth_kybd_data = s =
LIBSSH2_ALLOC(session, session->userauth_kybd_packet_len);
if(!s) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for keyboard-"
"interactive response packet");
goto cleanup;
}
*s = SSH_MSG_USERAUTH_INFO_RESPONSE;
s++;
_libssh2_store_u32(&s, session->userauth_kybd_num_prompts);
for(i = 0; i < session->userauth_kybd_num_prompts; i++) {
_libssh2_store_str(&s,
session->userauth_kybd_responses[i].text,
session->userauth_kybd_responses[i].length);
}
session->userauth_kybd_state = libssh2_NB_state_sent1;
}
if(session->userauth_kybd_state == libssh2_NB_state_sent1) {
rc = _libssh2_transport_send(session, session->userauth_kybd_data,
session->userauth_kybd_packet_len,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN)
return _libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block");
if(rc) {
_libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send userauth-keyboard-interactive"
" request");
goto cleanup;
}
session->userauth_kybd_auth_failure = 0;
}
cleanup:
/*
* It's safe to clean all the data here, because unallocated pointers
* are filled by zeroes
*/
LIBSSH2_FREE(session, session->userauth_kybd_data);
session->userauth_kybd_data = NULL;
if(session->userauth_kybd_prompts) {
for(i = 0; i < session->userauth_kybd_num_prompts; i++) {
LIBSSH2_FREE(session, session->userauth_kybd_prompts[i].text);
session->userauth_kybd_prompts[i].text = NULL;
}
}
if(session->userauth_kybd_responses) {
for(i = 0; i < session->userauth_kybd_num_prompts; i++) {
LIBSSH2_FREE(session,
session->userauth_kybd_responses[i].text);
session->userauth_kybd_responses[i].text = NULL;
}
}
if(session->userauth_kybd_prompts) {
LIBSSH2_FREE(session, session->userauth_kybd_prompts);
session->userauth_kybd_prompts = NULL;
}
if(session->userauth_kybd_responses) {
LIBSSH2_FREE(session, session->userauth_kybd_responses);
session->userauth_kybd_responses = NULL;
}
if(session->userauth_kybd_auth_name) {
LIBSSH2_FREE(session, session->userauth_kybd_auth_name);
session->userauth_kybd_auth_name = NULL;
}
if(session->userauth_kybd_auth_instruction) {
LIBSSH2_FREE(session, session->userauth_kybd_auth_instruction);
session->userauth_kybd_auth_instruction = NULL;
}
if(session->userauth_kybd_auth_failure) {
session->userauth_kybd_state = libssh2_NB_state_idle;
return -1;
}
session->userauth_kybd_state = libssh2_NB_state_sent;
}
}
/*
* libssh2_userauth_keyboard_interactive_ex
*
* Authenticate using a challenge-response authentication
*/
LIBSSH2_API int
libssh2_userauth_keyboard_interactive_ex(LIBSSH2_SESSION *session,
const char *user,
unsigned int user_len,
LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC
((*response_callback)))
{
int rc;
BLOCK_ADJUST(rc, session,
userauth_keyboard_interactive(session, user, user_len,
response_callback));
return rc;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/crypt.c | /* Copyright (c) 2009, 2010 Simon Josefsson <[email protected]>
* Copyright (c) 2004-2007, Sara Golemon <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#ifdef LIBSSH2_CRYPT_NONE
/* crypt_none_crypt
* Minimalist cipher: VERY secure *wink*
*/
static int
crypt_none_crypt(LIBSSH2_SESSION * session, unsigned char *buf,
void **abstract)
{
/* Do nothing to the data! */
return 0;
}
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_none = {
"none",
"DEK-Info: NONE",
8, /* blocksize (SSH2 defines minimum blocksize as 8) */
0, /* iv_len */
0, /* secret_len */
0, /* flags */
NULL,
crypt_none_crypt,
NULL
};
#endif /* LIBSSH2_CRYPT_NONE */
struct crypt_ctx
{
int encrypt;
_libssh2_cipher_type(algo);
_libssh2_cipher_ctx h;
};
static int
crypt_init(LIBSSH2_SESSION * session,
const LIBSSH2_CRYPT_METHOD * method,
unsigned char *iv, int *free_iv,
unsigned char *secret, int *free_secret,
int encrypt, void **abstract)
{
struct crypt_ctx *ctx = LIBSSH2_ALLOC(session,
sizeof(struct crypt_ctx));
if(!ctx)
return LIBSSH2_ERROR_ALLOC;
ctx->encrypt = encrypt;
ctx->algo = method->algo;
if(_libssh2_cipher_init(&ctx->h, ctx->algo, iv, secret, encrypt)) {
LIBSSH2_FREE(session, ctx);
return -1;
}
*abstract = ctx;
*free_iv = 1;
*free_secret = 1;
return 0;
}
static int
crypt_encrypt(LIBSSH2_SESSION * session, unsigned char *block,
size_t blocksize, void **abstract)
{
struct crypt_ctx *cctx = *(struct crypt_ctx **) abstract;
(void) session;
return _libssh2_cipher_crypt(&cctx->h, cctx->algo, cctx->encrypt, block,
blocksize);
}
static int
crypt_dtor(LIBSSH2_SESSION * session, void **abstract)
{
struct crypt_ctx **cctx = (struct crypt_ctx **) abstract;
if(cctx && *cctx) {
_libssh2_cipher_dtor(&(*cctx)->h);
LIBSSH2_FREE(session, *cctx);
*abstract = NULL;
}
return 0;
}
#if LIBSSH2_AES_CTR
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_aes128_ctr = {
"aes128-ctr",
"",
16, /* blocksize */
16, /* initial value length */
16, /* secret length -- 16*8 == 128bit */
0, /* flags */
&crypt_init,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_aes128ctr
};
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_aes192_ctr = {
"aes192-ctr",
"",
16, /* blocksize */
16, /* initial value length */
24, /* secret length -- 24*8 == 192bit */
0, /* flags */
&crypt_init,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_aes192ctr
};
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_aes256_ctr = {
"aes256-ctr",
"",
16, /* blocksize */
16, /* initial value length */
32, /* secret length -- 32*8 == 256bit */
0, /* flags */
&crypt_init,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_aes256ctr
};
#endif
#if LIBSSH2_AES
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_aes128_cbc = {
"aes128-cbc",
"DEK-Info: AES-128-CBC",
16, /* blocksize */
16, /* initial value length */
16, /* secret length -- 16*8 == 128bit */
0, /* flags */
&crypt_init,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_aes128
};
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_aes192_cbc = {
"aes192-cbc",
"DEK-Info: AES-192-CBC",
16, /* blocksize */
16, /* initial value length */
24, /* secret length -- 24*8 == 192bit */
0, /* flags */
&crypt_init,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_aes192
};
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_aes256_cbc = {
"aes256-cbc",
"DEK-Info: AES-256-CBC",
16, /* blocksize */
16, /* initial value length */
32, /* secret length -- 32*8 == 256bit */
0, /* flags */
&crypt_init,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_aes256
};
/* [email protected] == aes256-cbc */
static const LIBSSH2_CRYPT_METHOD
libssh2_crypt_method_rijndael_cbc_lysator_liu_se = {
"[email protected]",
"DEK-Info: AES-256-CBC",
16, /* blocksize */
16, /* initial value length */
32, /* secret length -- 32*8 == 256bit */
0, /* flags */
&crypt_init,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_aes256
};
#endif /* LIBSSH2_AES */
#if LIBSSH2_BLOWFISH
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_blowfish_cbc = {
"blowfish-cbc",
"",
8, /* blocksize */
8, /* initial value length */
16, /* secret length */
0, /* flags */
&crypt_init,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_blowfish
};
#endif /* LIBSSH2_BLOWFISH */
#if LIBSSH2_RC4
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_arcfour = {
"arcfour",
"DEK-Info: RC4",
8, /* blocksize */
8, /* initial value length */
16, /* secret length */
0, /* flags */
&crypt_init,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_arcfour
};
static int
crypt_init_arcfour128(LIBSSH2_SESSION * session,
const LIBSSH2_CRYPT_METHOD * method,
unsigned char *iv, int *free_iv,
unsigned char *secret, int *free_secret,
int encrypt, void **abstract)
{
int rc;
rc = crypt_init(session, method, iv, free_iv, secret, free_secret,
encrypt, abstract);
if(rc == 0) {
struct crypt_ctx *cctx = *(struct crypt_ctx **) abstract;
unsigned char block[8];
size_t discard = 1536;
for(; discard; discard -= 8)
_libssh2_cipher_crypt(&cctx->h, cctx->algo, cctx->encrypt, block,
method->blocksize);
}
return rc;
}
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_arcfour128 = {
"arcfour128",
"",
8, /* blocksize */
8, /* initial value length */
16, /* secret length */
0, /* flags */
&crypt_init_arcfour128,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_arcfour
};
#endif /* LIBSSH2_RC4 */
#if LIBSSH2_CAST
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_cast128_cbc = {
"cast128-cbc",
"",
8, /* blocksize */
8, /* initial value length */
16, /* secret length */
0, /* flags */
&crypt_init,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_cast5
};
#endif /* LIBSSH2_CAST */
#if LIBSSH2_3DES
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_3des_cbc = {
"3des-cbc",
"DEK-Info: DES-EDE3-CBC",
8, /* blocksize */
8, /* initial value length */
24, /* secret length */
0, /* flags */
&crypt_init,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_3des
};
#endif
static const LIBSSH2_CRYPT_METHOD *_libssh2_crypt_methods[] = {
#if LIBSSH2_AES_CTR
&libssh2_crypt_method_aes128_ctr,
&libssh2_crypt_method_aes192_ctr,
&libssh2_crypt_method_aes256_ctr,
#endif /* LIBSSH2_AES */
#if LIBSSH2_AES
&libssh2_crypt_method_aes256_cbc,
&libssh2_crypt_method_rijndael_cbc_lysator_liu_se, /* == aes256-cbc */
&libssh2_crypt_method_aes192_cbc,
&libssh2_crypt_method_aes128_cbc,
#endif /* LIBSSH2_AES */
#if LIBSSH2_BLOWFISH
&libssh2_crypt_method_blowfish_cbc,
#endif /* LIBSSH2_BLOWFISH */
#if LIBSSH2_RC4
&libssh2_crypt_method_arcfour128,
&libssh2_crypt_method_arcfour,
#endif /* LIBSSH2_RC4 */
#if LIBSSH2_CAST
&libssh2_crypt_method_cast128_cbc,
#endif /* LIBSSH2_CAST */
#if LIBSSH2_3DES
&libssh2_crypt_method_3des_cbc,
#endif /* LIBSSH2_DES */
#ifdef LIBSSH2_CRYPT_NONE
&libssh2_crypt_method_none,
#endif
NULL
};
/* Expose to kex.c */
const LIBSSH2_CRYPT_METHOD **
libssh2_crypt_methods(void)
{
return _libssh2_crypt_methods;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/knownhost.c | /*
* Copyright (c) 2009-2019 by Daniel Stenberg
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include "misc.h"
struct known_host {
struct list_node node;
char *name; /* points to the name or the hash (allocated) */
size_t name_len; /* needed for hashed data */
int port; /* if non-zero, a specific port this key is for on this
host */
int typemask; /* plain, sha1, custom, ... */
char *salt; /* points to binary salt (allocated) */
size_t salt_len; /* size of salt */
char *key; /* the (allocated) associated key. This is kept base64
encoded in memory. */
char *key_type_name; /* the (allocated) key type name */
size_t key_type_len; /* size of key_type_name */
char *comment; /* the (allocated) optional comment text, may be
NULL */
size_t comment_len; /* the size of comment */
/* this is the struct we expose externally */
struct libssh2_knownhost external;
};
struct _LIBSSH2_KNOWNHOSTS
{
LIBSSH2_SESSION *session; /* the session this "belongs to" */
struct list_head head;
};
static void free_host(LIBSSH2_SESSION *session, struct known_host *entry)
{
if(entry) {
if(entry->comment)
LIBSSH2_FREE(session, entry->comment);
if(entry->key_type_name)
LIBSSH2_FREE(session, entry->key_type_name);
if(entry->key)
LIBSSH2_FREE(session, entry->key);
if(entry->salt)
LIBSSH2_FREE(session, entry->salt);
if(entry->name)
LIBSSH2_FREE(session, entry->name);
LIBSSH2_FREE(session, entry);
}
}
/*
* libssh2_knownhost_init
*
* Init a collection of known hosts. Returns the pointer to a collection.
*
*/
LIBSSH2_API LIBSSH2_KNOWNHOSTS *
libssh2_knownhost_init(LIBSSH2_SESSION *session)
{
LIBSSH2_KNOWNHOSTS *knh =
LIBSSH2_ALLOC(session, sizeof(struct _LIBSSH2_KNOWNHOSTS));
if(!knh) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for known-hosts "
"collection");
return NULL;
}
knh->session = session;
_libssh2_list_init(&knh->head);
return knh;
}
#define KNOWNHOST_MAGIC 0xdeadcafe
/*
* knownhost_to_external()
*
* Copies data from the internal to the external representation struct.
*
*/
static struct libssh2_knownhost *knownhost_to_external(struct known_host *node)
{
struct libssh2_knownhost *ext = &node->external;
ext->magic = KNOWNHOST_MAGIC;
ext->node = node;
ext->name = ((node->typemask & LIBSSH2_KNOWNHOST_TYPE_MASK) ==
LIBSSH2_KNOWNHOST_TYPE_PLAIN)? node->name:NULL;
ext->key = node->key;
ext->typemask = node->typemask;
return ext;
}
static int
knownhost_add(LIBSSH2_KNOWNHOSTS *hosts,
const char *host, const char *salt,
const char *key_type_name, size_t key_type_len,
const char *key, size_t keylen,
const char *comment, size_t commentlen,
int typemask, struct libssh2_knownhost **store)
{
struct known_host *entry;
size_t hostlen = strlen(host);
int rc;
char *ptr;
unsigned int ptrlen;
/* make sure we have a key type set */
if(!(typemask & LIBSSH2_KNOWNHOST_KEY_MASK))
return _libssh2_error(hosts->session, LIBSSH2_ERROR_INVAL,
"No key type set");
entry = LIBSSH2_CALLOC(hosts->session, sizeof(struct known_host));
if(!entry)
return _libssh2_error(hosts->session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for known host "
"entry");
entry->typemask = typemask;
switch(entry->typemask & LIBSSH2_KNOWNHOST_TYPE_MASK) {
case LIBSSH2_KNOWNHOST_TYPE_PLAIN:
case LIBSSH2_KNOWNHOST_TYPE_CUSTOM:
entry->name = LIBSSH2_ALLOC(hosts->session, hostlen + 1);
if(!entry->name) {
rc = _libssh2_error(hosts->session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for host name");
goto error;
}
memcpy(entry->name, host, hostlen + 1);
entry->name_len = hostlen;
break;
case LIBSSH2_KNOWNHOST_TYPE_SHA1:
rc = libssh2_base64_decode(hosts->session, &ptr, &ptrlen,
host, hostlen);
if(rc)
goto error;
entry->name = ptr;
entry->name_len = ptrlen;
rc = libssh2_base64_decode(hosts->session, &ptr, &ptrlen,
salt, strlen(salt));
if(rc)
goto error;
entry->salt = ptr;
entry->salt_len = ptrlen;
break;
default:
rc = _libssh2_error(hosts->session, LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unknown host name type");
goto error;
}
if(typemask & LIBSSH2_KNOWNHOST_KEYENC_BASE64) {
/* the provided key is base64 encoded already */
if(!keylen)
keylen = strlen(key);
entry->key = LIBSSH2_ALLOC(hosts->session, keylen + 1);
if(!entry->key) {
rc = _libssh2_error(hosts->session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for key");
goto error;
}
memcpy(entry->key, key, keylen + 1);
entry->key[keylen] = 0; /* force a terminating zero trailer */
}
else {
/* key is raw, we base64 encode it and store it as such */
size_t nlen = _libssh2_base64_encode(hosts->session, key, keylen,
&ptr);
if(!nlen) {
rc = _libssh2_error(hosts->session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"base64-encoded key");
goto error;
}
entry->key = ptr;
}
if(key_type_name && ((typemask & LIBSSH2_KNOWNHOST_KEY_MASK) ==
LIBSSH2_KNOWNHOST_KEY_UNKNOWN)) {
entry->key_type_name = LIBSSH2_ALLOC(hosts->session, key_type_len + 1);
if(!entry->key_type_name) {
rc = _libssh2_error(hosts->session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for key type");
goto error;
}
memcpy(entry->key_type_name, key_type_name, key_type_len);
entry->key_type_name[key_type_len] = 0;
entry->key_type_len = key_type_len;
}
if(comment) {
entry->comment = LIBSSH2_ALLOC(hosts->session, commentlen + 1);
if(!entry->comment) {
rc = _libssh2_error(hosts->session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for comment");
goto error;
}
memcpy(entry->comment, comment, commentlen + 1);
entry->comment[commentlen] = 0; /* force a terminating zero trailer */
entry->comment_len = commentlen;
}
else {
entry->comment = NULL;
}
/* add this new host to the big list of known hosts */
_libssh2_list_add(&hosts->head, &entry->node);
if(store)
*store = knownhost_to_external(entry);
return LIBSSH2_ERROR_NONE;
error:
free_host(hosts->session, entry);
return rc;
}
/*
* libssh2_knownhost_add
*
* Add a host and its associated key to the collection of known hosts.
*
* The 'type' argument specifies on what format the given host and keys are:
*
* plain - ascii "hostname.domain.tld"
* sha1 - SHA1(<salt> <host>) base64-encoded!
* custom - another hash
*
* If 'sha1' is selected as type, the salt must be provided to the salt
* argument. This too base64 encoded.
*
* The SHA-1 hash is what OpenSSH can be told to use in known_hosts files. If
* a custom type is used, salt is ignored and you must provide the host
* pre-hashed when checking for it in the libssh2_knownhost_check() function.
*
* The keylen parameter may be omitted (zero) if the key is provided as a
* NULL-terminated base64-encoded string.
*/
LIBSSH2_API int
libssh2_knownhost_add(LIBSSH2_KNOWNHOSTS *hosts,
const char *host, const char *salt,
const char *key, size_t keylen,
int typemask, struct libssh2_knownhost **store)
{
return knownhost_add(hosts, host, salt, NULL, 0, key, keylen, NULL,
0, typemask, store);
}
/*
* libssh2_knownhost_addc
*
* Add a host and its associated key to the collection of known hosts.
*
* Takes a comment argument that may be NULL. A NULL comment indicates
* there is no comment and the entry will end directly after the key
* when written out to a file. An empty string "" comment will indicate an
* empty comment which will cause a single space to be written after the key.
*
* The 'type' argument specifies on what format the given host and keys are:
*
* plain - ascii "hostname.domain.tld"
* sha1 - SHA1(<salt> <host>) base64-encoded!
* custom - another hash
*
* If 'sha1' is selected as type, the salt must be provided to the salt
* argument. This too base64 encoded.
*
* The SHA-1 hash is what OpenSSH can be told to use in known_hosts files. If
* a custom type is used, salt is ignored and you must provide the host
* pre-hashed when checking for it in the libssh2_knownhost_check() function.
*
* The keylen parameter may be omitted (zero) if the key is provided as a
* NULL-terminated base64-encoded string.
*/
LIBSSH2_API int
libssh2_knownhost_addc(LIBSSH2_KNOWNHOSTS *hosts,
const char *host, const char *salt,
const char *key, size_t keylen,
const char *comment, size_t commentlen,
int typemask, struct libssh2_knownhost **store)
{
return knownhost_add(hosts, host, salt, NULL, 0, key, keylen,
comment, commentlen, typemask, store);
}
/*
* knownhost_check
*
* Check a host and its associated key against the collection of known hosts.
*
* The typemask is the type/format of the given host name and key
*
* plain - ascii "hostname.domain.tld"
* sha1 - NOT SUPPORTED AS INPUT
* custom - prehashed base64 encoded. Note that this cannot use any salts.
*
* Returns:
*
* LIBSSH2_KNOWNHOST_CHECK_FAILURE
* LIBSSH2_KNOWNHOST_CHECK_NOTFOUND
* LIBSSH2_KNOWNHOST_CHECK_MATCH
* LIBSSH2_KNOWNHOST_CHECK_MISMATCH
*/
static int
knownhost_check(LIBSSH2_KNOWNHOSTS *hosts,
const char *hostp, int port,
const char *key, size_t keylen,
int typemask,
struct libssh2_knownhost **ext)
{
struct known_host *node;
struct known_host *badkey = NULL;
int type = typemask & LIBSSH2_KNOWNHOST_TYPE_MASK;
char *keyalloc = NULL;
int rc = LIBSSH2_KNOWNHOST_CHECK_NOTFOUND;
char hostbuff[270]; /* most host names can't be longer than like 256 */
const char *host;
int numcheck; /* number of host combos to check */
int match = 0;
if(type == LIBSSH2_KNOWNHOST_TYPE_SHA1)
/* we can't work with a sha1 as given input */
return LIBSSH2_KNOWNHOST_CHECK_MISMATCH;
/* if a port number is given, check for a '[host]:port' first before the
plain 'host' */
if(port >= 0) {
int len = snprintf(hostbuff, sizeof(hostbuff), "[%s]:%d", hostp, port);
if(len < 0 || len >= (int)sizeof(hostbuff)) {
_libssh2_error(hosts->session,
LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Known-host write buffer too small");
return LIBSSH2_KNOWNHOST_CHECK_FAILURE;
}
host = hostbuff;
numcheck = 2; /* check both combos, start with this */
}
else {
host = hostp;
numcheck = 1; /* only check this host version */
}
if(!(typemask & LIBSSH2_KNOWNHOST_KEYENC_BASE64)) {
/* we got a raw key input, convert it to base64 for the checks below */
size_t nlen = _libssh2_base64_encode(hosts->session, key, keylen,
&keyalloc);
if(!nlen) {
_libssh2_error(hosts->session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for base64-encoded "
"key");
return LIBSSH2_KNOWNHOST_CHECK_FAILURE;
}
/* make the key point to this */
key = keyalloc;
}
do {
node = _libssh2_list_first(&hosts->head);
while(node) {
switch(node->typemask & LIBSSH2_KNOWNHOST_TYPE_MASK) {
case LIBSSH2_KNOWNHOST_TYPE_PLAIN:
if(type == LIBSSH2_KNOWNHOST_TYPE_PLAIN)
match = !strcmp(host, node->name);
break;
case LIBSSH2_KNOWNHOST_TYPE_CUSTOM:
if(type == LIBSSH2_KNOWNHOST_TYPE_CUSTOM)
match = !strcmp(host, node->name);
break;
case LIBSSH2_KNOWNHOST_TYPE_SHA1:
if(type == LIBSSH2_KNOWNHOST_TYPE_PLAIN) {
/* when we have the sha1 version stored, we can use a
plain input to produce a hash to compare with the
stored hash.
*/
unsigned char hash[SHA_DIGEST_LENGTH];
libssh2_hmac_ctx ctx;
libssh2_hmac_ctx_init(ctx);
if(SHA_DIGEST_LENGTH != node->name_len) {
/* the name hash length must be the sha1 size or
we can't match it */
break;
}
libssh2_hmac_sha1_init(&ctx, (unsigned char *)node->salt,
node->salt_len);
libssh2_hmac_update(ctx, (unsigned char *)host,
strlen(host));
libssh2_hmac_final(ctx, hash);
libssh2_hmac_cleanup(&ctx);
if(!memcmp(hash, node->name, SHA_DIGEST_LENGTH))
/* this is a node we're interested in */
match = 1;
}
break;
default: /* unsupported type */
break;
}
if(match) {
int host_key_type = typemask & LIBSSH2_KNOWNHOST_KEY_MASK;
int known_key_type =
node->typemask & LIBSSH2_KNOWNHOST_KEY_MASK;
/* match on key type as follows:
- never match on an unknown key type
- if key_type is set to zero, ignore it an match always
- otherwise match when both key types are equal
*/
if(host_key_type != LIBSSH2_KNOWNHOST_KEY_UNKNOWN &&
(host_key_type == 0 ||
host_key_type == known_key_type)) {
/* host name and key type match, now compare the keys */
if(!strcmp(key, node->key)) {
/* they match! */
if(ext)
*ext = knownhost_to_external(node);
badkey = NULL;
rc = LIBSSH2_KNOWNHOST_CHECK_MATCH;
break;
}
else {
/* remember the first node that had a host match but a
failed key match since we continue our search from
here */
if(!badkey)
badkey = node;
}
}
match = 0; /* don't count this as a match anymore */
}
node = _libssh2_list_next(&node->node);
}
host = hostp;
} while(!match && --numcheck);
if(badkey) {
/* key mismatch */
if(ext)
*ext = knownhost_to_external(badkey);
rc = LIBSSH2_KNOWNHOST_CHECK_MISMATCH;
}
if(keyalloc)
LIBSSH2_FREE(hosts->session, keyalloc);
return rc;
}
/*
* libssh2_knownhost_check
*
* Check a host and its associated key against the collection of known hosts.
*
* The typemask is the type/format of the given host name and key
*
* plain - ascii "hostname.domain.tld"
* sha1 - NOT SUPPORTED AS INPUT
* custom - prehashed base64 encoded. Note that this cannot use any salts.
*
* Returns:
*
* LIBSSH2_KNOWNHOST_CHECK_FAILURE
* LIBSSH2_KNOWNHOST_CHECK_NOTFOUND
* LIBSSH2_KNOWNHOST_CHECK_MATCH
* LIBSSH2_KNOWNHOST_CHECK_MISMATCH
*/
LIBSSH2_API int
libssh2_knownhost_check(LIBSSH2_KNOWNHOSTS *hosts,
const char *hostp, const char *key, size_t keylen,
int typemask,
struct libssh2_knownhost **ext)
{
return knownhost_check(hosts, hostp, -1, key, keylen,
typemask, ext);
}
/*
* libssh2_knownhost_checkp
*
* Check a host+port and its associated key against the collection of known
* hosts.
*
* Note that if 'port' is specified as greater than zero, the check function
* will be able to check for a dedicated key for this particular host+port
* combo, and if 'port' is negative it only checks for the generic host key.
*
* The typemask is the type/format of the given host name and key
*
* plain - ascii "hostname.domain.tld"
* sha1 - NOT SUPPORTED AS INPUT
* custom - prehashed base64 encoded. Note that this cannot use any salts.
*
* Returns:
*
* LIBSSH2_KNOWNHOST_CHECK_FAILURE
* LIBSSH2_KNOWNHOST_CHECK_NOTFOUND
* LIBSSH2_KNOWNHOST_CHECK_MATCH
* LIBSSH2_KNOWNHOST_CHECK_MISMATCH
*/
LIBSSH2_API int
libssh2_knownhost_checkp(LIBSSH2_KNOWNHOSTS *hosts,
const char *hostp, int port,
const char *key, size_t keylen,
int typemask,
struct libssh2_knownhost **ext)
{
return knownhost_check(hosts, hostp, port, key, keylen,
typemask, ext);
}
/*
* libssh2_knownhost_del
*
* Remove a host from the collection of known hosts.
*
*/
LIBSSH2_API int
libssh2_knownhost_del(LIBSSH2_KNOWNHOSTS *hosts,
struct libssh2_knownhost *entry)
{
struct known_host *node;
/* check that this was retrieved the right way or get out */
if(!entry || (entry->magic != KNOWNHOST_MAGIC))
return _libssh2_error(hosts->session, LIBSSH2_ERROR_INVAL,
"Invalid host information");
/* get the internal node pointer */
node = entry->node;
/* unlink from the list of all hosts */
_libssh2_list_remove(&node->node);
/* clear the struct now since the memory in which it is allocated is
about to be freed! */
memset(entry, 0, sizeof(struct libssh2_knownhost));
/* free all resources */
free_host(hosts->session, node);
return 0;
}
/*
* libssh2_knownhost_free
*
* Free an entire collection of known hosts.
*
*/
LIBSSH2_API void
libssh2_knownhost_free(LIBSSH2_KNOWNHOSTS *hosts)
{
struct known_host *node;
struct known_host *next;
for(node = _libssh2_list_first(&hosts->head); node; node = next) {
next = _libssh2_list_next(&node->node);
free_host(hosts->session, node);
}
LIBSSH2_FREE(hosts->session, hosts);
}
/* old style plain text: [name]([,][name])*
for the sake of simplicity, we add them as separate hosts with the same
key
*/
static int oldstyle_hostline(LIBSSH2_KNOWNHOSTS *hosts,
const char *host, size_t hostlen,
const char *key_type_name, size_t key_type_len,
const char *key, size_t keylen, int key_type,
const char *comment, size_t commentlen)
{
int rc = 0;
size_t namelen = 0;
const char *name = host + hostlen;
if(hostlen < 1)
return _libssh2_error(hosts->session,
LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Failed to parse known_hosts line "
"(no host names)");
while(name > host) {
--name;
++namelen;
/* when we get the the start or see a comma coming up, add the host
name to the collection */
if((name == host) || (*(name-1) == ',')) {
char hostbuf[256];
/* make sure we don't overflow the buffer */
if(namelen >= sizeof(hostbuf)-1)
return _libssh2_error(hosts->session,
LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Failed to parse known_hosts line "
"(unexpected length)");
/* copy host name to the temp buffer and zero terminate */
memcpy(hostbuf, name, namelen);
hostbuf[namelen] = 0;
rc = knownhost_add(hosts, hostbuf, NULL,
key_type_name, key_type_len,
key, keylen,
comment, commentlen,
key_type | LIBSSH2_KNOWNHOST_TYPE_PLAIN |
LIBSSH2_KNOWNHOST_KEYENC_BASE64, NULL);
if(rc)
return rc;
if(name > host) {
namelen = 0;
--name; /* skip comma */
}
}
}
return rc;
}
/* |1|[salt]|[hash] */
static int hashed_hostline(LIBSSH2_KNOWNHOSTS *hosts,
const char *host, size_t hostlen,
const char *key_type_name, size_t key_type_len,
const char *key, size_t keylen, int key_type,
const char *comment, size_t commentlen)
{
const char *p;
char saltbuf[32];
char hostbuf[256];
const char *salt = &host[3]; /* skip the magic marker */
hostlen -= 3; /* deduct the marker */
/* this is where the salt starts, find the end of it */
for(p = salt; *p && (*p != '|'); p++)
;
if(*p == '|') {
const char *hash = NULL;
size_t saltlen = p - salt;
if(saltlen >= (sizeof(saltbuf)-1)) /* weird length */
return _libssh2_error(hosts->session,
LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Failed to parse known_hosts line "
"(unexpectedly long salt)");
memcpy(saltbuf, salt, saltlen);
saltbuf[saltlen] = 0; /* zero terminate */
salt = saltbuf; /* point to the stack based buffer */
hash = p + 1; /* the host hash is after the separator */
/* now make the host point to the hash */
host = hash;
hostlen -= saltlen + 1; /* deduct the salt and separator */
/* check that the lengths seem sensible */
if(hostlen >= sizeof(hostbuf)-1)
return _libssh2_error(hosts->session,
LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Failed to parse known_hosts line "
"(unexpected length)");
memcpy(hostbuf, host, hostlen);
hostbuf[hostlen] = 0;
return knownhost_add(hosts, hostbuf, salt,
key_type_name, key_type_len,
key, keylen,
comment, commentlen,
key_type | LIBSSH2_KNOWNHOST_TYPE_SHA1 |
LIBSSH2_KNOWNHOST_KEYENC_BASE64, NULL);
}
else
return 0; /* XXX: This should be an error, shouldn't it? */
}
/*
* hostline()
*
* Parse a single known_host line pre-split into host and key.
*
* The key part may include an optional comment which will be parsed here
* for ssh-rsa and ssh-dsa keys. Comments in other key types aren't handled.
*
* The function assumes new-lines have already been removed from the arguments.
*/
static int hostline(LIBSSH2_KNOWNHOSTS *hosts,
const char *host, size_t hostlen,
const char *key, size_t keylen)
{
const char *comment = NULL;
const char *key_type_name = NULL;
size_t commentlen = 0;
size_t key_type_len = 0;
int key_type;
/* make some checks that the lengths seem sensible */
if(keylen < 20)
return _libssh2_error(hosts->session,
LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Failed to parse known_hosts line "
"(key too short)");
switch(key[0]) {
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
key_type = LIBSSH2_KNOWNHOST_KEY_RSA1;
/* Note that the old-style keys (RSA1) aren't truly base64, but we
* claim it is for now since we can get away with strcmp()ing the
* entire anything anyway! We need to check and fix these to make them
* work properly.
*/
break;
default:
key_type_name = key;
while(keylen && *key &&
(*key != ' ') && (*key != '\t')) {
key++;
keylen--;
}
key_type_len = key - key_type_name;
if(!strncmp(key_type_name, "ssh-dss", key_type_len))
key_type = LIBSSH2_KNOWNHOST_KEY_SSHDSS;
else if(!strncmp(key_type_name, "ssh-rsa", key_type_len))
key_type = LIBSSH2_KNOWNHOST_KEY_SSHRSA;
else if(!strncmp(key_type_name, "ecdsa-sha2-nistp256", key_type_len))
key_type = LIBSSH2_KNOWNHOST_KEY_ECDSA_256;
else if(!strncmp(key_type_name, "ecdsa-sha2-nistp384", key_type_len))
key_type = LIBSSH2_KNOWNHOST_KEY_ECDSA_384;
else if(!strncmp(key_type_name, "ecdsa-sha2-nistp521", key_type_len))
key_type = LIBSSH2_KNOWNHOST_KEY_ECDSA_521;
else if(!strncmp(key_type_name, "ssh-ed25519", key_type_len))
key_type = LIBSSH2_KNOWNHOST_KEY_ED25519;
else
key_type = LIBSSH2_KNOWNHOST_KEY_UNKNOWN;
/* skip whitespaces */
while((*key ==' ') || (*key == '\t')) {
key++;
keylen--;
}
comment = key;
commentlen = keylen;
/* move over key */
while(commentlen && *comment &&
(*comment != ' ') && (*comment != '\t')) {
comment++;
commentlen--;
}
/* reduce key by comment length */
keylen -= commentlen;
/* Distinguish empty comment (a space) from no comment (no space) */
if(commentlen == 0)
comment = NULL;
/* skip whitespaces */
while(commentlen && *comment &&
((*comment ==' ') || (*comment == '\t'))) {
comment++;
commentlen--;
}
break;
}
/* Figure out host format */
if((hostlen >2) && memcmp(host, "|1|", 3)) {
/* old style plain text: [name]([,][name])*
for the sake of simplicity, we add them as separate hosts with the
same key
*/
return oldstyle_hostline(hosts, host, hostlen, key_type_name,
key_type_len, key, keylen, key_type,
comment, commentlen);
}
else {
/* |1|[salt]|[hash] */
return hashed_hostline(hosts, host, hostlen, key_type_name,
key_type_len, key, keylen, key_type,
comment, commentlen);
}
}
/*
* libssh2_knownhost_readline()
*
* Pass in a line of a file of 'type'.
*
* LIBSSH2_KNOWNHOST_FILE_OPENSSH is the only supported type.
*
* OpenSSH line format:
*
* <host> <key>
*
* Where the two parts can be created like:
*
* <host> can be either
* <name> or <hash>
*
* <name> consists of
* [name] optionally followed by [,name] one or more times
*
* <hash> consists of
* |1|<salt>|hash
*
* <key> can be one of:
* [RSA bits] [e] [n as a decimal number]
* 'ssh-dss' [base64-encoded-key]
* 'ssh-rsa' [base64-encoded-key]
*
*/
LIBSSH2_API int
libssh2_knownhost_readline(LIBSSH2_KNOWNHOSTS *hosts,
const char *line, size_t len, int type)
{
const char *cp;
const char *hostp;
const char *keyp;
size_t hostlen;
size_t keylen;
int rc;
if(type != LIBSSH2_KNOWNHOST_FILE_OPENSSH)
return _libssh2_error(hosts->session,
LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unsupported type of known-host information "
"store");
cp = line;
/* skip leading whitespaces */
while(len && ((*cp == ' ') || (*cp == '\t'))) {
cp++;
len--;
}
if(!len || !*cp || (*cp == '#') || (*cp == '\n'))
/* comment or empty line */
return LIBSSH2_ERROR_NONE;
/* the host part starts here */
hostp = cp;
/* move over the host to the separator */
while(len && *cp && (*cp != ' ') && (*cp != '\t')) {
cp++;
len--;
}
hostlen = cp - hostp;
/* the key starts after the whitespaces */
while(len && *cp && ((*cp == ' ') || (*cp == '\t'))) {
cp++;
len--;
}
if(!*cp || !len) /* illegal line */
return _libssh2_error(hosts->session,
LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Failed to parse known_hosts line");
keyp = cp; /* the key starts here */
keylen = len;
/* check if the line (key) ends with a newline and if so kill it */
while(len && *cp && (*cp != '\n')) {
cp++;
len--;
}
/* zero terminate where the newline is */
if(*cp == '\n')
keylen--; /* don't include this in the count */
/* deal with this one host+key line */
rc = hostline(hosts, hostp, hostlen, keyp, keylen);
if(rc)
return rc; /* failed */
return LIBSSH2_ERROR_NONE; /* success */
}
/*
* libssh2_knownhost_readfile
*
* Read hosts+key pairs from a given file.
*
* Returns a negative value for error or number of successfully added hosts.
*
*/
LIBSSH2_API int
libssh2_knownhost_readfile(LIBSSH2_KNOWNHOSTS *hosts,
const char *filename, int type)
{
FILE *file;
int num = 0;
char buf[4092];
if(type != LIBSSH2_KNOWNHOST_FILE_OPENSSH)
return _libssh2_error(hosts->session,
LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unsupported type of known-host information "
"store");
file = fopen(filename, FOPEN_READTEXT);
if(file) {
while(fgets(buf, sizeof(buf), file)) {
if(libssh2_knownhost_readline(hosts, buf, strlen(buf), type)) {
num = _libssh2_error(hosts->session, LIBSSH2_ERROR_KNOWN_HOSTS,
"Failed to parse known hosts file");
break;
}
num++;
}
fclose(file);
}
else
return _libssh2_error(hosts->session, LIBSSH2_ERROR_FILE,
"Failed to open file");
return num;
}
/*
* knownhost_writeline()
*
* Ask libssh2 to convert a known host to an output line for storage.
*
* Note that this function returns LIBSSH2_ERROR_BUFFER_TOO_SMALL if the given
* output buffer is too small to hold the desired output. The 'outlen' field
* will then contain the size libssh2 wanted to store, which then is the
* smallest sufficient buffer it would require.
*
*/
static int
knownhost_writeline(LIBSSH2_KNOWNHOSTS *hosts,
struct known_host *node,
char *buf, size_t buflen,
size_t *outlen, int type)
{
size_t required_size;
const char *key_type_name;
size_t key_type_len;
/* we only support this single file type for now, bail out on all other
attempts */
if(type != LIBSSH2_KNOWNHOST_FILE_OPENSSH)
return _libssh2_error(hosts->session,
LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unsupported type of known-host information "
"store");
switch(node->typemask & LIBSSH2_KNOWNHOST_KEY_MASK) {
case LIBSSH2_KNOWNHOST_KEY_RSA1:
key_type_name = NULL;
key_type_len = 0;
break;
case LIBSSH2_KNOWNHOST_KEY_SSHRSA:
key_type_name = "ssh-rsa";
key_type_len = 7;
break;
case LIBSSH2_KNOWNHOST_KEY_SSHDSS:
key_type_name = "ssh-dss";
key_type_len = 7;
break;
case LIBSSH2_KNOWNHOST_KEY_ECDSA_256:
key_type_name = "ecdsa-sha2-nistp256";
key_type_len = 19;
break;
case LIBSSH2_KNOWNHOST_KEY_ECDSA_384:
key_type_name = "ecdsa-sha2-nistp384";
key_type_len = 19;
break;
case LIBSSH2_KNOWNHOST_KEY_ECDSA_521:
key_type_name = "ecdsa-sha2-nistp521";
key_type_len = 19;
break;
case LIBSSH2_KNOWNHOST_KEY_ED25519:
key_type_name = "ssh-ed25519";
key_type_len = 11;
break;
case LIBSSH2_KNOWNHOST_KEY_UNKNOWN:
key_type_name = node->key_type_name;
if(key_type_name) {
key_type_len = node->key_type_len;
break;
}
/* otherwise fallback to default and error */
/* FALL-THROUGH */
default:
return _libssh2_error(hosts->session,
LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unsupported type of known-host entry");
}
/* When putting together the host line there are three aspects to consider:
- Hashed (SHA1) or unhashed hostname
- key name or no key name (RSA1)
- comment or no comment
This means there are 2^3 different formats:
("|1|%s|%s %s %s %s\n", salt, hashed_host, key_name, key, comment)
("|1|%s|%s %s %s\n", salt, hashed_host, key_name, key)
("|1|%s|%s %s %s\n", salt, hashed_host, key, comment)
("|1|%s|%s %s\n", salt, hashed_host, key)
("%s %s %s %s\n", host, key_name, key, comment)
("%s %s %s\n", host, key_name, key)
("%s %s %s\n", host, key, comment)
("%s %s\n", host, key)
Even if the buffer is too small, we have to set outlen to the number of
characters the complete line would have taken. We also don't write
anything to the buffer unless we are sure we can write everything to the
buffer. */
required_size = strlen(node->key);
if(key_type_len)
required_size += key_type_len + 1; /* ' ' = 1 */
if(node->comment)
required_size += node->comment_len + 1; /* ' ' = 1 */
if((node->typemask & LIBSSH2_KNOWNHOST_TYPE_MASK) ==
LIBSSH2_KNOWNHOST_TYPE_SHA1) {
char *namealloc;
size_t name_base64_len;
char *saltalloc;
size_t salt_base64_len;
name_base64_len = _libssh2_base64_encode(hosts->session, node->name,
node->name_len, &namealloc);
if(!name_base64_len)
return _libssh2_error(hosts->session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"base64-encoded host name");
salt_base64_len = _libssh2_base64_encode(hosts->session,
node->salt, node->salt_len,
&saltalloc);
if(!salt_base64_len) {
LIBSSH2_FREE(hosts->session, namealloc);
return _libssh2_error(hosts->session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"base64-encoded salt");
}
required_size += salt_base64_len + name_base64_len + 7;
/* |1| + | + ' ' + \n + \0 = 7 */
if(required_size <= buflen) {
if(node->comment && key_type_len)
snprintf(buf, buflen, "|1|%s|%s %s %s %s\n", saltalloc,
namealloc, key_type_name, node->key, node->comment);
else if(node->comment)
snprintf(buf, buflen, "|1|%s|%s %s %s\n", saltalloc, namealloc,
node->key, node->comment);
else if(key_type_len)
snprintf(buf, buflen, "|1|%s|%s %s %s\n", saltalloc, namealloc,
key_type_name, node->key);
else
snprintf(buf, buflen, "|1|%s|%s %s\n", saltalloc, namealloc,
node->key);
}
LIBSSH2_FREE(hosts->session, namealloc);
LIBSSH2_FREE(hosts->session, saltalloc);
}
else {
required_size += node->name_len + 3;
/* ' ' + '\n' + \0 = 3 */
if(required_size <= buflen) {
if(node->comment && key_type_len)
snprintf(buf, buflen, "%s %s %s %s\n", node->name,
key_type_name, node->key, node->comment);
else if(node->comment)
snprintf(buf, buflen, "%s %s %s\n", node->name, node->key,
node->comment);
else if(key_type_len)
snprintf(buf, buflen, "%s %s %s\n", node->name, key_type_name,
node->key);
else
snprintf(buf, buflen, "%s %s\n", node->name, node->key);
}
}
/* we report the full length of the data with the trailing zero excluded */
*outlen = required_size-1;
if(required_size <= buflen)
return LIBSSH2_ERROR_NONE;
else
return _libssh2_error(hosts->session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Known-host write buffer too small");
}
/*
* libssh2_knownhost_writeline()
*
* Ask libssh2 to convert a known host to an output line for storage.
*
* Note that this function returns LIBSSH2_ERROR_BUFFER_TOO_SMALL if the given
* output buffer is too small to hold the desired output.
*/
LIBSSH2_API int
libssh2_knownhost_writeline(LIBSSH2_KNOWNHOSTS *hosts,
struct libssh2_knownhost *known,
char *buffer, size_t buflen,
size_t *outlen, /* the amount of written data */
int type)
{
struct known_host *node;
if(known->magic != KNOWNHOST_MAGIC)
return _libssh2_error(hosts->session, LIBSSH2_ERROR_INVAL,
"Invalid host information");
node = known->node;
return knownhost_writeline(hosts, node, buffer, buflen, outlen, type);
}
/*
* libssh2_knownhost_writefile()
*
* Write hosts+key pairs to the given file.
*/
LIBSSH2_API int
libssh2_knownhost_writefile(LIBSSH2_KNOWNHOSTS *hosts,
const char *filename, int type)
{
struct known_host *node;
FILE *file;
int rc = LIBSSH2_ERROR_NONE;
char buffer[4092];
/* we only support this single file type for now, bail out on all other
attempts */
if(type != LIBSSH2_KNOWNHOST_FILE_OPENSSH)
return _libssh2_error(hosts->session,
LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unsupported type of known-host information "
"store");
file = fopen(filename, FOPEN_WRITETEXT);
if(!file)
return _libssh2_error(hosts->session, LIBSSH2_ERROR_FILE,
"Failed to open file");
for(node = _libssh2_list_first(&hosts->head);
node;
node = _libssh2_list_next(&node->node)) {
size_t wrote = 0;
size_t nwrote;
rc = knownhost_writeline(hosts, node, buffer, sizeof(buffer), &wrote,
type);
if(rc)
break;
nwrote = fwrite(buffer, 1, wrote, file);
if(nwrote != wrote) {
/* failed to write the whole thing, bail out */
rc = _libssh2_error(hosts->session, LIBSSH2_ERROR_FILE,
"Write failed");
break;
}
}
fclose(file);
return rc;
}
/*
* libssh2_knownhost_get()
*
* Traverse the internal list of known hosts. Pass NULL to 'prev' to get
* the first one.
*
* Returns:
* 0 if a fine host was stored in 'store'
* 1 if end of hosts
* [negative] on errors
*/
LIBSSH2_API int
libssh2_knownhost_get(LIBSSH2_KNOWNHOSTS *hosts,
struct libssh2_knownhost **ext,
struct libssh2_knownhost *oprev)
{
struct known_host *node;
if(oprev && oprev->node) {
/* we have a starting point */
struct known_host *prev = oprev->node;
/* get the next node in the list */
node = _libssh2_list_next(&prev->node);
}
else
node = _libssh2_list_first(&hosts->head);
if(!node)
/* no (more) node */
return 1;
*ext = knownhost_to_external(node);
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/sftp.h | #ifndef __LIBSSH2_SFTP_H
#define __LIBSSH2_SFTP_H
/*
* Copyright (C) 2010 - 2012 by Daniel Stenberg
* Author: Daniel Stenberg <[email protected]>
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
*/
/*
* MAX_SFTP_OUTGOING_SIZE MUST not be larger than 32500 or so. This is the
* amount of data sent in each FXP_WRITE packet
*/
#define MAX_SFTP_OUTGOING_SIZE 30000
/* MAX_SFTP_READ_SIZE is how much data is asked for at max in each FXP_READ
* packets.
*/
#define MAX_SFTP_READ_SIZE 30000
struct sftp_pipeline_chunk {
struct list_node node;
libssh2_uint64_t offset; /* READ: offset at which to start reading
WRITE: not used */
size_t len; /* WRITE: size of the data to write
READ: how many bytes that was asked for */
size_t sent;
ssize_t lefttosend; /* if 0, the entire packet has been sent off */
uint32_t request_id;
unsigned char packet[1]; /* data */
};
struct sftp_zombie_requests {
struct list_node node;
uint32_t request_id;
};
#ifndef MIN
#define MIN(x,y) ((x)<(y)?(x):(y))
#endif
struct _LIBSSH2_SFTP_PACKET
{
struct list_node node; /* linked list header */
uint32_t request_id;
unsigned char *data;
size_t data_len; /* payload size */
};
typedef struct _LIBSSH2_SFTP_PACKET LIBSSH2_SFTP_PACKET;
#define SFTP_HANDLE_MAXLEN 256 /* according to spec! */
struct _LIBSSH2_SFTP_HANDLE
{
struct list_node node;
LIBSSH2_SFTP *sftp;
char handle[SFTP_HANDLE_MAXLEN];
size_t handle_len;
enum {
LIBSSH2_SFTP_HANDLE_FILE,
LIBSSH2_SFTP_HANDLE_DIR
} handle_type;
union _libssh2_sftp_handle_data
{
struct _libssh2_sftp_handle_file_data
{
libssh2_uint64_t offset;
libssh2_uint64_t offset_sent;
size_t acked; /* container for acked data that hasn't been
returned to caller yet, used for sftp_write */
/* 'data' is used by sftp_read() and is allocated data that has
been received already from the server but wasn't returned to
the caller yet. It is of size 'data_len' and 'data_left is the
number of bytes not yet returned, counted from the end of the
buffer. */
unsigned char *data;
size_t data_len;
size_t data_left;
char eof; /* we have read to the end */
} file;
struct _libssh2_sftp_handle_dir_data
{
uint32_t names_left;
void *names_packet;
char *next_name;
size_t names_packet_len;
} dir;
} u;
/* State variables used in libssh2_sftp_close_handle() */
libssh2_nonblocking_states close_state;
uint32_t close_request_id;
unsigned char *close_packet;
/* list of outstanding packets sent to server */
struct list_head packet_list;
};
struct _LIBSSH2_SFTP
{
LIBSSH2_CHANNEL *channel;
uint32_t request_id, version;
struct list_head packets;
/* List of FXP_READ responses to ignore because EOF already received. */
struct list_head zombie_requests;
/* a list of _LIBSSH2_SFTP_HANDLE structs */
struct list_head sftp_handles;
uint32_t last_errno;
/* Holder for partial packet, use in libssh2_sftp_packet_read() */
unsigned char partial_size[4]; /* buffer for size field */
size_t partial_size_len; /* size field length */
unsigned char *partial_packet; /* The data */
uint32_t partial_len; /* Desired number of bytes */
size_t partial_received; /* Bytes received so far */
/* Time that libssh2_sftp_packet_requirev() started reading */
time_t requirev_start;
/* State variables used in libssh2_sftp_open_ex() */
libssh2_nonblocking_states open_state;
unsigned char *open_packet;
uint32_t open_packet_len; /* 32 bit on the wire */
size_t open_packet_sent;
uint32_t open_request_id;
/* State variable used in sftp_read() */
libssh2_nonblocking_states read_state;
/* State variable used in sftp_packet_read() */
libssh2_nonblocking_states packet_state;
/* State variable used in sftp_write() */
libssh2_nonblocking_states write_state;
/* State variables used in sftp_fsync() */
libssh2_nonblocking_states fsync_state;
unsigned char *fsync_packet;
uint32_t fsync_request_id;
/* State variables used in libssh2_sftp_readdir() */
libssh2_nonblocking_states readdir_state;
unsigned char *readdir_packet;
uint32_t readdir_request_id;
/* State variables used in libssh2_sftp_fstat_ex() */
libssh2_nonblocking_states fstat_state;
unsigned char *fstat_packet;
uint32_t fstat_request_id;
/* State variables used in libssh2_sftp_unlink_ex() */
libssh2_nonblocking_states unlink_state;
unsigned char *unlink_packet;
uint32_t unlink_request_id;
/* State variables used in libssh2_sftp_rename_ex() */
libssh2_nonblocking_states rename_state;
unsigned char *rename_packet;
unsigned char *rename_s;
uint32_t rename_request_id;
/* State variables used in libssh2_sftp_fstatvfs() */
libssh2_nonblocking_states fstatvfs_state;
unsigned char *fstatvfs_packet;
uint32_t fstatvfs_request_id;
/* State variables used in libssh2_sftp_statvfs() */
libssh2_nonblocking_states statvfs_state;
unsigned char *statvfs_packet;
uint32_t statvfs_request_id;
/* State variables used in libssh2_sftp_mkdir() */
libssh2_nonblocking_states mkdir_state;
unsigned char *mkdir_packet;
uint32_t mkdir_request_id;
/* State variables used in libssh2_sftp_rmdir() */
libssh2_nonblocking_states rmdir_state;
unsigned char *rmdir_packet;
uint32_t rmdir_request_id;
/* State variables used in libssh2_sftp_stat() */
libssh2_nonblocking_states stat_state;
unsigned char *stat_packet;
uint32_t stat_request_id;
/* State variables used in libssh2_sftp_symlink() */
libssh2_nonblocking_states symlink_state;
unsigned char *symlink_packet;
uint32_t symlink_request_id;
};
#endif /* __LIBSSH2_SFTP_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/pem.c | /* Copyright (C) 2007 The Written Word, Inc.
* Copyright (C) 2008, Simon Josefsson
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
static int
readline(char *line, int line_size, FILE * fp)
{
size_t len;
if(!line) {
return -1;
}
if(!fgets(line, line_size, fp)) {
return -1;
}
if(*line) {
len = strlen(line);
if(len > 0 && line[len - 1] == '\n') {
line[len - 1] = '\0';
}
}
if(*line) {
len = strlen(line);
if(len > 0 && line[len - 1] == '\r') {
line[len - 1] = '\0';
}
}
return 0;
}
static int
readline_memory(char *line, size_t line_size,
const char *filedata, size_t filedata_len,
size_t *filedata_offset)
{
size_t off, len;
off = *filedata_offset;
for(len = 0; off + len < filedata_len && len < line_size - 1; len++) {
if(filedata[off + len] == '\n' ||
filedata[off + len] == '\r') {
break;
}
}
if(len) {
memcpy(line, filedata + off, len);
*filedata_offset += len;
}
line[len] = '\0';
*filedata_offset += 1;
return 0;
}
#define LINE_SIZE 128
static const char *crypt_annotation = "Proc-Type: 4,ENCRYPTED";
static unsigned char hex_decode(char digit)
{
return (digit >= 'A') ? 0xA + (digit - 'A') : (digit - '0');
}
int
_libssh2_pem_parse(LIBSSH2_SESSION * session,
const char *headerbegin,
const char *headerend,
const unsigned char *passphrase,
FILE * fp, unsigned char **data, unsigned int *datalen)
{
char line[LINE_SIZE];
unsigned char iv[LINE_SIZE];
char *b64data = NULL;
unsigned int b64datalen = 0;
int ret;
const LIBSSH2_CRYPT_METHOD *method = NULL;
do {
*line = '\0';
if(readline(line, LINE_SIZE, fp)) {
return -1;
}
}
while(strcmp(line, headerbegin) != 0);
if(readline(line, LINE_SIZE, fp)) {
return -1;
}
if(passphrase &&
memcmp(line, crypt_annotation, strlen(crypt_annotation)) == 0) {
const LIBSSH2_CRYPT_METHOD **all_methods, *cur_method;
int i;
if(readline(line, LINE_SIZE, fp)) {
ret = -1;
goto out;
}
all_methods = libssh2_crypt_methods();
while((cur_method = *all_methods++)) {
if(*cur_method->pem_annotation &&
memcmp(line, cur_method->pem_annotation,
strlen(cur_method->pem_annotation)) == 0) {
method = cur_method;
memcpy(iv, line + strlen(method->pem_annotation) + 1,
2*method->iv_len);
}
}
/* None of the available crypt methods were able to decrypt the key */
if(method == NULL)
return -1;
/* Decode IV from hex */
for(i = 0; i < method->iv_len; ++i) {
iv[i] = hex_decode(iv[2*i]) << 4;
iv[i] |= hex_decode(iv[2*i + 1]);
}
/* skip to the next line */
if(readline(line, LINE_SIZE, fp)) {
ret = -1;
goto out;
}
}
do {
if(*line) {
char *tmp;
size_t linelen;
linelen = strlen(line);
tmp = LIBSSH2_REALLOC(session, b64data, b64datalen + linelen);
if(!tmp) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for PEM parsing");
ret = -1;
goto out;
}
memcpy(tmp + b64datalen, line, linelen);
b64data = tmp;
b64datalen += linelen;
}
*line = '\0';
if(readline(line, LINE_SIZE, fp)) {
ret = -1;
goto out;
}
} while(strcmp(line, headerend) != 0);
if(!b64data) {
return -1;
}
if(libssh2_base64_decode(session, (char **) data, datalen,
b64data, b64datalen)) {
ret = -1;
goto out;
}
if(method) {
/* Set up decryption */
int free_iv = 0, free_secret = 0, len_decrypted = 0, padding = 0;
int blocksize = method->blocksize;
void *abstract;
unsigned char secret[2*MD5_DIGEST_LENGTH];
libssh2_md5_ctx fingerprint_ctx;
/* Perform key derivation (PBKDF1/MD5) */
if(!libssh2_md5_init(&fingerprint_ctx)) {
ret = -1;
goto out;
}
libssh2_md5_update(fingerprint_ctx, passphrase,
strlen((char *)passphrase));
libssh2_md5_update(fingerprint_ctx, iv, 8);
libssh2_md5_final(fingerprint_ctx, secret);
if(method->secret_len > MD5_DIGEST_LENGTH) {
if(!libssh2_md5_init(&fingerprint_ctx)) {
ret = -1;
goto out;
}
libssh2_md5_update(fingerprint_ctx, secret, MD5_DIGEST_LENGTH);
libssh2_md5_update(fingerprint_ctx, passphrase,
strlen((char *)passphrase));
libssh2_md5_update(fingerprint_ctx, iv, 8);
libssh2_md5_final(fingerprint_ctx, secret + MD5_DIGEST_LENGTH);
}
/* Initialize the decryption */
if(method->init(session, method, iv, &free_iv, secret,
&free_secret, 0, &abstract)) {
_libssh2_explicit_zero((char *)secret, sizeof(secret));
LIBSSH2_FREE(session, data);
ret = -1;
goto out;
}
if(free_secret) {
_libssh2_explicit_zero((char *)secret, sizeof(secret));
}
/* Do the actual decryption */
if((*datalen % blocksize) != 0) {
_libssh2_explicit_zero((char *)secret, sizeof(secret));
method->dtor(session, &abstract);
_libssh2_explicit_zero(*data, *datalen);
LIBSSH2_FREE(session, *data);
ret = -1;
goto out;
}
while(len_decrypted <= (int)*datalen - blocksize) {
if(method->crypt(session, *data + len_decrypted, blocksize,
&abstract)) {
ret = LIBSSH2_ERROR_DECRYPT;
_libssh2_explicit_zero((char *)secret, sizeof(secret));
method->dtor(session, &abstract);
_libssh2_explicit_zero(*data, *datalen);
LIBSSH2_FREE(session, *data);
goto out;
}
len_decrypted += blocksize;
}
/* Account for padding */
padding = (*data)[*datalen - 1];
memset(&(*data)[*datalen-padding], 0, padding);
*datalen -= padding;
/* Clean up */
_libssh2_explicit_zero((char *)secret, sizeof(secret));
method->dtor(session, &abstract);
}
ret = 0;
out:
if(b64data) {
_libssh2_explicit_zero(b64data, b64datalen);
LIBSSH2_FREE(session, b64data);
}
return ret;
}
int
_libssh2_pem_parse_memory(LIBSSH2_SESSION * session,
const char *headerbegin,
const char *headerend,
const char *filedata, size_t filedata_len,
unsigned char **data, unsigned int *datalen)
{
char line[LINE_SIZE];
char *b64data = NULL;
unsigned int b64datalen = 0;
size_t off = 0;
int ret;
do {
*line = '\0';
if(readline_memory(line, LINE_SIZE, filedata, filedata_len, &off)) {
return -1;
}
}
while(strcmp(line, headerbegin) != 0);
*line = '\0';
do {
if(*line) {
char *tmp;
size_t linelen;
linelen = strlen(line);
tmp = LIBSSH2_REALLOC(session, b64data, b64datalen + linelen);
if(!tmp) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for PEM parsing");
ret = -1;
goto out;
}
memcpy(tmp + b64datalen, line, linelen);
b64data = tmp;
b64datalen += linelen;
}
*line = '\0';
if(readline_memory(line, LINE_SIZE, filedata, filedata_len, &off)) {
ret = -1;
goto out;
}
} while(strcmp(line, headerend) != 0);
if(!b64data) {
return -1;
}
if(libssh2_base64_decode(session, (char **) data, datalen,
b64data, b64datalen)) {
ret = -1;
goto out;
}
ret = 0;
out:
if(b64data) {
_libssh2_explicit_zero(b64data, b64datalen);
LIBSSH2_FREE(session, b64data);
}
return ret;
}
/* OpenSSH formatted keys */
#define AUTH_MAGIC "openssh-key-v1"
#define OPENSSH_HEADER_BEGIN "-----BEGIN OPENSSH PRIVATE KEY-----"
#define OPENSSH_HEADER_END "-----END OPENSSH PRIVATE KEY-----"
static int
_libssh2_openssh_pem_parse_data(LIBSSH2_SESSION * session,
const unsigned char *passphrase,
const char *b64data, size_t b64datalen,
struct string_buf **decrypted_buf)
{
const LIBSSH2_CRYPT_METHOD *method = NULL;
struct string_buf decoded, decrypted, kdf_buf;
unsigned char *ciphername = NULL;
unsigned char *kdfname = NULL;
unsigned char *kdf = NULL;
unsigned char *buf = NULL;
unsigned char *salt = NULL;
uint32_t nkeys, check1, check2;
uint32_t rounds = 0;
unsigned char *key = NULL;
unsigned char *key_part = NULL;
unsigned char *iv_part = NULL;
unsigned char *f = NULL;
unsigned int f_len = 0;
int ret = 0, keylen = 0, ivlen = 0, total_len = 0;
size_t kdf_len = 0, tmp_len = 0, salt_len = 0;
if(decrypted_buf)
*decrypted_buf = NULL;
/* decode file */
if(libssh2_base64_decode(session, (char **)&f, &f_len,
b64data, b64datalen)) {
ret = -1;
goto out;
}
/* Parse the file */
decoded.data = (unsigned char *)f;
decoded.dataptr = (unsigned char *)f;
decoded.len = f_len;
if(decoded.len < strlen(AUTH_MAGIC)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO, "key too short");
goto out;
}
if(strncmp((char *) decoded.dataptr, AUTH_MAGIC,
strlen(AUTH_MAGIC)) != 0) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"key auth magic mismatch");
goto out;
}
decoded.dataptr += strlen(AUTH_MAGIC) + 1;
if(_libssh2_get_string(&decoded, &ciphername, &tmp_len) ||
tmp_len == 0) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"ciphername is missing");
goto out;
}
if(_libssh2_get_string(&decoded, &kdfname, &tmp_len) ||
tmp_len == 0) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"kdfname is missing");
goto out;
}
if(_libssh2_get_string(&decoded, &kdf, &kdf_len)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"kdf is missing");
goto out;
}
else {
kdf_buf.data = kdf;
kdf_buf.dataptr = kdf;
kdf_buf.len = kdf_len;
}
if((passphrase == NULL || strlen((const char *)passphrase) == 0) &&
strcmp((const char *)ciphername, "none") != 0) {
/* passphrase required */
ret = LIBSSH2_ERROR_KEYFILE_AUTH_FAILED;
goto out;
}
if(strcmp((const char *)kdfname, "none") != 0 &&
strcmp((const char *)kdfname, "bcrypt") != 0) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"unknown cipher");
goto out;
}
if(!strcmp((const char *)kdfname, "none") &&
strcmp((const char *)ciphername, "none") != 0) {
ret =_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"invalid format");
goto out;
}
if(_libssh2_get_u32(&decoded, &nkeys) != 0 || nkeys != 1) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Multiple keys are unsupported");
goto out;
}
/* unencrypted public key */
if(_libssh2_get_string(&decoded, &buf, &tmp_len) || tmp_len == 0) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Invalid private key; "
"expect embedded public key");
goto out;
}
if(_libssh2_get_string(&decoded, &buf, &tmp_len) || tmp_len == 0) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Private key data not found");
goto out;
}
/* decode encrypted private key */
decrypted.data = decrypted.dataptr = buf;
decrypted.len = tmp_len;
if(ciphername && strcmp((const char *)ciphername, "none") != 0) {
const LIBSSH2_CRYPT_METHOD **all_methods, *cur_method;
all_methods = libssh2_crypt_methods();
while((cur_method = *all_methods++)) {
if(*cur_method->name &&
memcmp(ciphername, cur_method->name,
strlen(cur_method->name)) == 0) {
method = cur_method;
}
}
/* None of the available crypt methods were able to decrypt the key */
if(method == NULL) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"No supported cipher found");
goto out;
}
}
if(method) {
int free_iv = 0, free_secret = 0, len_decrypted = 0;
int blocksize;
void *abstract = NULL;
keylen = method->secret_len;
ivlen = method->iv_len;
total_len = keylen + ivlen;
key = LIBSSH2_CALLOC(session, total_len);
if(key == NULL) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Could not alloc key");
goto out;
}
if(strcmp((const char *)kdfname, "bcrypt") == 0 &&
passphrase != NULL) {
if((_libssh2_get_string(&kdf_buf, &salt, &salt_len)) ||
(_libssh2_get_u32(&kdf_buf, &rounds) != 0) ) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"kdf contains unexpected values");
LIBSSH2_FREE(session, key);
goto out;
}
if(_libssh2_bcrypt_pbkdf((const char *)passphrase,
strlen((const char *)passphrase),
salt, salt_len, key,
keylen + ivlen, rounds) < 0) {
ret = _libssh2_error(session, LIBSSH2_ERROR_DECRYPT,
"invalid format");
LIBSSH2_FREE(session, key);
goto out;
}
}
else {
ret = _libssh2_error(session, LIBSSH2_ERROR_KEYFILE_AUTH_FAILED,
"bcrypted without passphrase");
LIBSSH2_FREE(session, key);
goto out;
}
/* Set up decryption */
blocksize = method->blocksize;
key_part = LIBSSH2_CALLOC(session, keylen);
if(key_part == NULL) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Could not alloc key part");
goto out;
}
iv_part = LIBSSH2_CALLOC(session, ivlen);
if(iv_part == NULL) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Could not alloc iv part");
goto out;
}
memcpy(key_part, key, keylen);
memcpy(iv_part, key + keylen, ivlen);
/* Initialize the decryption */
if(method->init(session, method, iv_part, &free_iv, key_part,
&free_secret, 0, &abstract)) {
ret = LIBSSH2_ERROR_DECRYPT;
goto out;
}
/* Do the actual decryption */
if((decrypted.len % blocksize) != 0) {
method->dtor(session, &abstract);
ret = LIBSSH2_ERROR_DECRYPT;
goto out;
}
while((size_t)len_decrypted <= decrypted.len - blocksize) {
if(method->crypt(session, decrypted.data + len_decrypted,
blocksize,
&abstract)) {
ret = LIBSSH2_ERROR_DECRYPT;
method->dtor(session, &abstract);
goto out;
}
len_decrypted += blocksize;
}
/* No padding */
method->dtor(session, &abstract);
}
/* Check random bytes match */
if(_libssh2_get_u32(&decrypted, &check1) != 0 ||
_libssh2_get_u32(&decrypted, &check2) != 0 ||
check1 != check2) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Private key unpack failed (correct password?)");
ret = LIBSSH2_ERROR_KEYFILE_AUTH_FAILED;
goto out;
}
if(decrypted_buf != NULL) {
/* copy data to out-going buffer */
struct string_buf *out_buf = _libssh2_string_buf_new(session);
if(!out_buf) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"decrypted struct");
goto out;
}
out_buf->data = LIBSSH2_CALLOC(session, decrypted.len);
if(out_buf->data == NULL) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"decrypted struct");
_libssh2_string_buf_free(session, out_buf);
goto out;
}
memcpy(out_buf->data, decrypted.data, decrypted.len);
out_buf->dataptr = out_buf->data +
(decrypted.dataptr - decrypted.data);
out_buf->len = decrypted.len;
*decrypted_buf = out_buf;
}
out:
/* Clean up */
if(key) {
_libssh2_explicit_zero(key, total_len);
LIBSSH2_FREE(session, key);
}
if(key_part) {
_libssh2_explicit_zero(key_part, keylen);
LIBSSH2_FREE(session, key_part);
}
if(iv_part) {
_libssh2_explicit_zero(iv_part, ivlen);
LIBSSH2_FREE(session, iv_part);
}
if(f) {
_libssh2_explicit_zero(f, f_len);
LIBSSH2_FREE(session, f);
}
return ret;
}
int
_libssh2_openssh_pem_parse(LIBSSH2_SESSION * session,
const unsigned char *passphrase,
FILE * fp, struct string_buf **decrypted_buf)
{
char line[LINE_SIZE];
char *b64data = NULL;
unsigned int b64datalen = 0;
int ret = 0;
/* read file */
do {
*line = '\0';
if(readline(line, LINE_SIZE, fp)) {
return -1;
}
}
while(strcmp(line, OPENSSH_HEADER_BEGIN) != 0);
if(readline(line, LINE_SIZE, fp)) {
return -1;
}
do {
if(*line) {
char *tmp;
size_t linelen;
linelen = strlen(line);
tmp = LIBSSH2_REALLOC(session, b64data, b64datalen + linelen);
if(!tmp) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for PEM parsing");
ret = -1;
goto out;
}
memcpy(tmp + b64datalen, line, linelen);
b64data = tmp;
b64datalen += linelen;
}
*line = '\0';
if(readline(line, LINE_SIZE, fp)) {
ret = -1;
goto out;
}
} while(strcmp(line, OPENSSH_HEADER_END) != 0);
if(!b64data) {
return -1;
}
ret = _libssh2_openssh_pem_parse_data(session,
passphrase,
(const char *)b64data,
(size_t)b64datalen,
decrypted_buf);
if(b64data) {
_libssh2_explicit_zero(b64data, b64datalen);
LIBSSH2_FREE(session, b64data);
}
out:
return ret;
}
int
_libssh2_openssh_pem_parse_memory(LIBSSH2_SESSION * session,
const unsigned char *passphrase,
const char *filedata, size_t filedata_len,
struct string_buf **decrypted_buf)
{
char line[LINE_SIZE];
char *b64data = NULL;
unsigned int b64datalen = 0;
size_t off = 0;
int ret;
if(filedata == NULL || filedata_len <= 0)
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Error parsing PEM: filedata missing");
do {
*line = '\0';
if(off >= filedata_len)
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Error parsing PEM: offset out of bounds");
if(readline_memory(line, LINE_SIZE, filedata, filedata_len, &off)) {
return -1;
}
}
while(strcmp(line, OPENSSH_HEADER_BEGIN) != 0);
*line = '\0';
do {
if (*line) {
char *tmp;
size_t linelen;
linelen = strlen(line);
tmp = LIBSSH2_REALLOC(session, b64data, b64datalen + linelen);
if(!tmp) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"PEM parsing");
goto out;
}
memcpy(tmp + b64datalen, line, linelen);
b64data = tmp;
b64datalen += linelen;
}
*line = '\0';
if(off >= filedata_len) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Error parsing PEM: offset out of bounds");
goto out;
}
if(readline_memory(line, LINE_SIZE, filedata, filedata_len, &off)) {
ret = -1;
goto out;
}
} while(strcmp(line, OPENSSH_HEADER_END) != 0);
if(!b64data)
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Error parsing PEM: base 64 data missing");
ret = _libssh2_openssh_pem_parse_data(session, passphrase, b64data,
b64datalen, decrypted_buf);
out:
if(b64data) {
_libssh2_explicit_zero(b64data, b64datalen);
LIBSSH2_FREE(session, b64data);
}
return ret;
}
static int
read_asn1_length(const unsigned char *data,
unsigned int datalen, unsigned int *len)
{
unsigned int lenlen;
int nextpos;
if(datalen < 1) {
return -1;
}
*len = data[0];
if(*len >= 0x80) {
lenlen = *len & 0x7F;
*len = data[1];
if(1 + lenlen > datalen) {
return -1;
}
if(lenlen > 1) {
*len <<= 8;
*len |= data[2];
}
}
else {
lenlen = 0;
}
nextpos = 1 + lenlen;
if(lenlen > 2 || 1 + lenlen + *len > datalen) {
return -1;
}
return nextpos;
}
int
_libssh2_pem_decode_sequence(unsigned char **data, unsigned int *datalen)
{
unsigned int len;
int lenlen;
if(*datalen < 1) {
return -1;
}
if((*data)[0] != '\x30') {
return -1;
}
(*data)++;
(*datalen)--;
lenlen = read_asn1_length(*data, *datalen, &len);
if(lenlen < 0 || lenlen + len != *datalen) {
return -1;
}
*data += lenlen;
*datalen -= lenlen;
return 0;
}
int
_libssh2_pem_decode_integer(unsigned char **data, unsigned int *datalen,
unsigned char **i, unsigned int *ilen)
{
unsigned int len;
int lenlen;
if(*datalen < 1) {
return -1;
}
if((*data)[0] != '\x02') {
return -1;
}
(*data)++;
(*datalen)--;
lenlen = read_asn1_length(*data, *datalen, &len);
if(lenlen < 0 || lenlen + len > *datalen) {
return -1;
}
*data += lenlen;
*datalen -= lenlen;
*i = *data;
*ilen = len;
*data += len;
*datalen -= len;
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/os400qc3.c | /*
* Copyright (C) 2015-2016 Patrick Monnerat, D+H <[email protected]>
* Copyright (C) 2020 Patrick Monnerat <[email protected]>.
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#ifdef LIBSSH2_OS400QC3 /* compile only if we build with OS/400 QC3 library */
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
#include <stdarg.h>
#include <alloca.h>
#include <sys/uio.h>
#include <arpa/inet.h>
#ifdef OS400_DEBUG
/* In debug mode, all system library errors cause an exception. */
#define set_EC_length(ec, length) ((ec).Bytes_Provided = \
(ec).Bytes_Available = 0)
#else
#define set_EC_length(ec, length) ((ec).Bytes_Provided = (length))
#endif
/* Ensure va_list operations are not on an array. */
typedef struct {
va_list list;
} valiststr;
typedef int (*loadkeyproc)(LIBSSH2_SESSION *session,
const unsigned char *data, unsigned int datalen,
const unsigned char *passphrase, void *loadkeydata);
/* Public key extraction data. */
typedef struct {
const char * method;
const unsigned char * data;
unsigned int length;
} loadpubkeydata;
/* Support for ASN.1 elements. */
typedef struct {
char * header; /* Pointer to header byte. */
char * beg; /* Pointer to element data. */
char * end; /* Pointer to 1st byte after element. */
unsigned char class; /* ASN.1 element class. */
unsigned char tag; /* ASN.1 element tag. */
unsigned char constructed; /* Element is constructed. */
} asn1Element;
#define ASN1_INTEGER 2
#define ASN1_BIT_STRING 3
#define ASN1_OCTET_STRING 4
#define ASN1_NULL 5
#define ASN1_OBJ_ID 6
#define ASN1_SEQ 16
#define ASN1_CONSTRUCTED 0x20
/* rsaEncryption OID: 1.2.840.113549.1.1.1 */
static unsigned char OID_rsaEncryption[] =
{9, 40 + 2, 0x86, 0x48, 0x86, 0xF7, 0x0D, 1, 1, 1};
static int sshrsapubkey(LIBSSH2_SESSION *session, char **sshpubkey,
asn1Element *params, asn1Element *key,
const char *method);
#if LIBSSH2_DSA != 0
/* dsaEncryption OID: 1.2.840.10040.4.1 */
static unsigned char OID_dsaEncryption[] =
{7, 40 + 2, 0x86, 0x48, 0xCE, 0x38, 4, 1};
static int sshdsapubkey(LIBSSH2_SESSION *session, char **sshpubkey,
asn1Element *params, asn1Element *key,
const char *method);
#endif
static unsigned char OID_dhKeyAgreement[] =
{9, 40 + 2, 0x86, 0x48, 0x86, 0xF7, 0x0D, 1, 3, 1};
/* PKCS#5 support. */
typedef struct pkcs5params pkcs5params;
struct pkcs5params {
int cipher; /* Encryption cipher. */
int blocksize; /* Cipher block size. */
char mode; /* Block encryption mode. */
char padopt; /* Pad option. */
char padchar; /* Pad character. */
int (*kdf)(LIBSSH2_SESSION *session, char **dk,
const unsigned char *passphrase, pkcs5params *pkcs5);
int hash; /* KDF hash algorithm. */
size_t hashlen; /* KDF hash digest length. */
char * salt; /* Salt. */
size_t saltlen; /* Salt length. */
char * iv; /* Initialization vector. */
size_t ivlen; /* Initialization vector length. */
int itercount; /* KDF iteration count. */
int dklen; /* Derived key length (#bytes). */
int effkeysize; /* RC2 effective key size (#bits) or 0. */
};
typedef struct pkcs5algo pkcs5algo;
struct pkcs5algo {
const unsigned char * oid;
int (*parse)(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param);
int cipher; /* Encryption cipher. */
size_t blocksize; /* Cipher block size. */
char mode; /* Block encryption mode. */
char padopt; /* Pad option. */
char padchar; /* Pad character. */
size_t keylen; /* Key length (#bytes). */
int hash; /* Hash algorithm. */
size_t hashlen; /* Hash digest length. */
size_t saltlen; /* Salt length. */
size_t ivlen; /* Initialisation vector length. */
int effkeysize; /* RC2 effective key size (#bits) or 0. */
};
/* id-PBES2 OID: 1.2.840.113549.1.5.13 */
static const unsigned char OID_id_PBES2[] = {
9, 40 + 2, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x05, 0x0D
};
static int parse_pbes2(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param);
static const pkcs5algo PBES2 = {
OID_id_PBES2, parse_pbes2, 0, 0, '\0', '\0', '\0', 0,
0, 0, 0, 0, 0
};
/* id-PBKDF2 OID: 1.2.840.113549.1.5.12 */
static const unsigned char OID_id_PBKDF2[] = {
9, 40 + 2, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x05, 0x0C
};
static int parse_pbkdf2(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param);
static const pkcs5algo PBKDF2 = {
OID_id_PBKDF2, parse_pbkdf2, 0, 0, '\0', '\0', '\0',
SHA_DIGEST_LENGTH, Qc3_SHA1, SHA_DIGEST_LENGTH, 8, 8, 0
};
/* id-hmacWithSHA1 OID: 1.2.840.113549.2.7 */
static const unsigned char OID_id_hmacWithSHA1[] = {
8, 40 + 2, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x02, 0x07
};
static int parse_hmacWithSHA1(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param);
static const pkcs5algo hmacWithSHA1 = {
OID_id_hmacWithSHA1, parse_hmacWithSHA1, 0, 0, '\0', '\0', '\0',
SHA_DIGEST_LENGTH, Qc3_SHA1, SHA_DIGEST_LENGTH, 8, 8, 0
};
/* desCBC OID: 1.3.14.3.2.7 */
static const unsigned char OID_desCBC[] = {5, 40 + 3, 0x0E, 0x03, 0x02, 0x07};
static int parse_iv(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param);
static const pkcs5algo desCBC = {
OID_desCBC, parse_iv, Qc3_DES, 8, Qc3_CBC, Qc3_Pad_Counter,
'\0', 8, 0, 0, 8, 8, 0
};
/* des-EDE3-CBC OID: 1.2.840.113549.3.7 */
static const unsigned char OID_des_EDE3_CBC[] = {
8, 40 + 2, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x03, 0x07
};
static const pkcs5algo des_EDE3_CBC = {
OID_des_EDE3_CBC, parse_iv, Qc3_TDES, 8, Qc3_CBC, Qc3_Pad_Counter,
'\0', 24, 0, 0, 8, 8, 0
};
/* rc2CBC OID: 1.2.840.113549.3.2 */
static const unsigned char OID_rc2CBC[] = {
8, 40 + 2, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x03, 0x02
};
static int parse_rc2(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param);
static const pkcs5algo rc2CBC = {
OID_rc2CBC, parse_rc2, Qc3_RC2, 8, Qc3_CBC, Qc3_Pad_Counter,
'\0', 0, 0, 0, 8, 0, 32
};
/* pbeWithMD5AndDES-CBC OID: 1.2.840.113549.1.5.3 */
static const unsigned char OID_pbeWithMD5AndDES_CBC[] = {
9, 40 + 2, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x05, 0x03
};
static int parse_pbes1(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param);
static const pkcs5algo pbeWithMD5AndDES_CBC = {
OID_pbeWithMD5AndDES_CBC, parse_pbes1, Qc3_DES, 8, Qc3_CBC,
Qc3_Pad_Counter, '\0', 8, Qc3_MD5, MD5_DIGEST_LENGTH, 8, 0, 0
};
/* pbeWithMD5AndRC2-CBC OID: 1.2.840.113549.1.5.6 */
static const unsigned char OID_pbeWithMD5AndRC2_CBC[] = {
9, 40 + 2, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x05, 0x06
};
static const pkcs5algo pbeWithMD5AndRC2_CBC = {
OID_pbeWithMD5AndRC2_CBC, parse_pbes1, Qc3_RC2, 8, Qc3_CBC,
Qc3_Pad_Counter, '\0', 0, Qc3_MD5, MD5_DIGEST_LENGTH, 8, 0, 64
};
/* pbeWithSHA1AndDES-CBC OID: 1.2.840.113549.1.5.10 */
static const unsigned char OID_pbeWithSHA1AndDES_CBC[] = {
9, 40 + 2, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x05, 0x0A
};
static const pkcs5algo pbeWithSHA1AndDES_CBC = {
OID_pbeWithSHA1AndDES_CBC, parse_pbes1, Qc3_DES, 8, Qc3_CBC,
Qc3_Pad_Counter, '\0', 8, Qc3_SHA1, SHA_DIGEST_LENGTH, 8, 0, 0
};
/* pbeWithSHA1AndRC2-CBC OID: 1.2.840.113549.1.5.11 */
static const unsigned char OID_pbeWithSHA1AndRC2_CBC[] = {
9, 40 + 2, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x05, 0x0B
};
static const pkcs5algo pbeWithSHA1AndRC2_CBC = {
OID_pbeWithSHA1AndRC2_CBC, parse_pbes1, Qc3_RC2, 8, Qc3_CBC,
Qc3_Pad_Counter, '\0', 0, Qc3_SHA1, SHA_DIGEST_LENGTH, 8, 0, 64
};
/* rc5-CBC-PAD OID: 1.2.840.113549.3.9: RC5 not implemented in Qc3. */
/* pbeWithMD2AndDES-CBC OID: 1.2.840.113549.1.5.1: MD2 not implemented. */
/* pbeWithMD2AndRC2-CBC OID: 1.2.840.113549.1.5.4: MD2 not implemented. */
static const pkcs5algo * pbestable[] = {
&pbeWithMD5AndDES_CBC,
&pbeWithMD5AndRC2_CBC,
&pbeWithSHA1AndDES_CBC,
&pbeWithSHA1AndRC2_CBC,
&PBES2,
NULL
};
static const pkcs5algo * pbkdf2table[] = {
&PBKDF2,
NULL
};
static const pkcs5algo * pbes2enctable[] = {
&desCBC,
&des_EDE3_CBC,
&rc2CBC,
NULL
};
static const pkcs5algo * kdf2prftable[] = {
&hmacWithSHA1,
NULL
};
/* Public key extraction support. */
static struct {
unsigned char *oid;
int (*sshpubkey)(LIBSSH2_SESSION *session, char **pubkey,
asn1Element *params, asn1Element *key,
const char *method);
const char * method;
} pka[] = {
#if LIBSSH2_RSA != 0
{ OID_rsaEncryption, sshrsapubkey, "ssh-rsa" },
#endif
#if LIBSSH2_DSA != 0
{ OID_dsaEncryption, sshdsapubkey, "ssh-dss" },
#endif
{ NULL, NULL, NULL }
};
/* Define ASCII strings. */
static const char beginencprivkeyhdr[] =
"-----BEGIN ENCRYPTED PRIVATE KEY-----";
static const char endencprivkeyhdr[] = "-----END ENCRYPTED PRIVATE KEY-----";
static const char beginprivkeyhdr[] = "-----BEGIN PRIVATE KEY-----";
static const char endprivkeyhdr[] = "-----END PRIVATE KEY-----";
static const char beginrsaprivkeyhdr[] = "-----BEGIN RSA PRIVATE KEY-----";
static const char endrsaprivkeyhdr[] = "-----END RSA PRIVATE KEY-----";
static const char fopenrmode[] = "r";
static const char fopenrbmode[] = "rb";
/* The rest of character literals in this module are in EBCDIC. */
#pragma convert(37)
#include <qusec.h>
#include <qc3prng.h>
#include <qc3dtaen.h>
#include <qc3dtade.h>
#include <qc3ctx.h>
#include <qc3hash.h>
#include <qc3hmac.h>
#include <qc3pbext.h>
#include <qc3sigvr.h>
#include <qc3sigcl.h>
#include <qc3pbext.h>
#include <qc3dh.h>
static Qc3_Format_KEYD0100_T nulltoken = {""};
static int zero = 0;
static int rsaprivate[] = { Qc3_RSA_Private };
static char anycsp[] = { Qc3_Any_CSP };
static char binstring[] = { Qc3_Bin_String };
static char berstring[] = { Qc3_BER_String };
static char qc3clear[] = { Qc3_Clear };
static const Qus_EC_t ecnull = {0}; /* Error causes an exception. */
static asn1Element lastbytebitcount = {
(char *) &zero, NULL, (char *) &zero + 1
};
/*******************************************************************
*
* OS/400 QC3 crypto-library backend: ASN.1 support.
*
*******************************************************************/
static char *
getASN1Element(asn1Element *elem, char *beg, char *end)
{
unsigned char b;
unsigned long len;
asn1Element lelem;
/* Get a single ASN.1 element into `elem', parse ASN.1 string at `beg'
* ending at `end'.
* Returns a pointer in source string after the parsed element, or NULL
* if an error occurs.
*/
if(beg >= end || !*beg)
return NULL;
/* Process header byte. */
elem->header = beg;
b = (unsigned char) *beg++;
elem->constructed = (b & 0x20) != 0;
elem->class = (b >> 6) & 3;
b &= 0x1F;
if(b == 0x1F)
return NULL; /* Long tag values not supported here. */
elem->tag = b;
/* Process length. */
if(beg >= end)
return NULL;
b = (unsigned char) *beg++;
if(!(b & 0x80))
len = b;
else if(!(b &= 0x7F)) {
/* Unspecified length. Since we have all the data, we can determine the
* effective length by skipping element until an end element is
* found.
*/
if(!elem->constructed)
return NULL;
elem->beg = beg;
while(beg < end && *beg) {
beg = getASN1Element(&lelem, beg, end);
if(!beg)
return NULL;
}
if(beg >= end)
return NULL;
elem->end = beg;
return beg + 1;
}
else if(beg + b > end)
return NULL; /* Does not fit in source. */
else {
/* Get long length. */
len = 0;
do {
if(len & 0xFF000000L)
return NULL; /* Lengths > 32 bits are not supported. */
len = (len << 8) | (unsigned char) *beg++;
} while(--b);
}
if((unsigned long) (end - beg) < len)
return NULL; /* Element data does not fit in source. */
elem->beg = beg;
elem->end = beg + len;
return elem->end;
}
static asn1Element *
asn1_new(unsigned int type, unsigned int length)
{
asn1Element *e;
unsigned int hdrl = 2;
unsigned int i;
unsigned char *buf;
e = (asn1Element *) malloc(sizeof *e);
if(e) {
if(length >= 0x80)
for(i = length; i; i >>= 8)
hdrl++;
buf = (unsigned char *) malloc(hdrl + length);
if(buf) {
e->header = buf;
e->beg = buf + hdrl;
e->end = e->beg + length;
e->class = (type >> 6) & 0x03;
e->tag = type & 0x1F;
e->constructed = (type >> 5) & 0x01;
e->header[0] = type;
if(length < 0x80)
e->header[1] = length;
else {
e->header[1] = (hdrl - 2) | 0x80;
do {
e->header[--hdrl] = length;
length >>= 8;
} while(length);
}
}
else {
free((char *) e);
e = NULL;
}
}
return e;
}
static asn1Element *
asn1_new_from_bytes(const unsigned char *data, unsigned int length)
{
asn1Element *e;
asn1Element te;
getASN1Element(&te,
(unsigned char *) data, (unsigned char *) data + length);
e = asn1_new(te.tag, te.end - te.beg);
if(e)
memcpy(e->header, data, e->end - e->header);
return e;
}
static void
asn1delete(asn1Element *e)
{
if(e) {
if(e->header)
free((char *) e->header);
free((char *) e);
}
}
static asn1Element *
asn1uint(_libssh2_bn *bn)
{
asn1Element *e;
int bits;
int length;
unsigned char *p;
if(!bn)
return NULL;
bits = _libssh2_bn_bits(bn);
length = (bits + 8) >> 3;
e = asn1_new(ASN1_INTEGER, length);
if(e) {
p = e->beg;
if(!(bits & 0x07))
*p++ = 0;
_libssh2_bn_to_bin(bn, p);
}
return e;
}
static asn1Element *
asn1containerv(unsigned int type, valiststr args)
{
valiststr va;
asn1Element *e;
asn1Element *p;
unsigned char *bp;
unsigned int length = 0;
memcpy((char *) &va, (char *) &args, sizeof args);
while((p = va_arg(va.list, asn1Element *)))
length += p->end - p->header;
va_end(va.list);
e = asn1_new(type, length);
if(e) {
bp = e->beg;
while((p = va_arg(args.list, asn1Element *))) {
memcpy(bp, p->header, p->end - p->header);
bp += p->end - p->header;
}
}
return e;
}
/* VARARGS1 */
static asn1Element *
asn1container(unsigned int type, ...)
{
valiststr va;
asn1Element *e;
va_start(va.list, type);
e = asn1containerv(type, va);
va_end(va.list);
return e;
}
static asn1Element *
asn1bytes(unsigned int type, const unsigned char *bytes, unsigned int length)
{
asn1Element *e;
e = asn1_new(type, length);
if(e && length)
memcpy(e->beg, bytes, length);
return e;
}
static asn1Element *
rsapublickey(_libssh2_bn *e, _libssh2_bn *m)
{
asn1Element *publicexponent;
asn1Element *modulus;
asn1Element *rsapubkey;
/* Build a PKCS#1 RSAPublicKey. */
modulus = asn1uint(m);
publicexponent = asn1uint(e);
rsapubkey = asn1container(ASN1_SEQ | ASN1_CONSTRUCTED,
modulus, publicexponent, NULL);
asn1delete(modulus);
asn1delete(publicexponent);
if(!modulus || !publicexponent) {
asn1delete(rsapubkey);
rsapubkey = NULL;
}
return rsapubkey;
}
static asn1Element *
rsaprivatekey(_libssh2_bn *e, _libssh2_bn *m, _libssh2_bn *d,
_libssh2_bn *p, _libssh2_bn *q,
_libssh2_bn *exp1, _libssh2_bn *exp2, _libssh2_bn *coeff)
{
asn1Element *version;
asn1Element *modulus;
asn1Element *publicexponent;
asn1Element *privateexponent;
asn1Element *prime1;
asn1Element *prime2;
asn1Element *exponent1;
asn1Element *exponent2;
asn1Element *coefficient;
asn1Element *rsaprivkey;
/* Build a PKCS#1 RSAPrivateKey. */
version = asn1bytes(ASN1_INTEGER, "\0", 1);
modulus = asn1uint(m);
publicexponent = asn1uint(e);
privateexponent = asn1uint(d);
prime1 = asn1uint(p);
prime2 = asn1uint(q);
exponent1 = asn1uint(exp1);
exponent2 = asn1uint(exp2);
coefficient = asn1uint(coeff);
rsaprivkey = asn1container(ASN1_SEQ | ASN1_CONSTRUCTED, version, modulus,
publicexponent, privateexponent, prime1, prime2,
exponent1, exponent2, coefficient, NULL);
asn1delete(version);
asn1delete(modulus);
asn1delete(publicexponent);
asn1delete(privateexponent);
asn1delete(prime1);
asn1delete(prime2);
asn1delete(exponent1);
asn1delete(exponent2);
asn1delete(coefficient);
if(!version || !modulus || !publicexponent || !privateexponent ||
!prime1 || !prime2 || !exponent1 || !exponent2 || !coefficient) {
asn1delete(rsaprivkey);
rsaprivkey = NULL;
}
return rsaprivkey;
}
static asn1Element *
subjectpublickeyinfo(asn1Element *pubkey, const unsigned char *algo,
asn1Element *parameters)
{
asn1Element *subjpubkey;
asn1Element *algorithm;
asn1Element *algorithmid;
asn1Element *subjpubkeyinfo;
unsigned int algosize = *algo++;
algorithm = asn1bytes(ASN1_OBJ_ID, algo, algosize);
algorithmid = asn1container(ASN1_SEQ | ASN1_CONSTRUCTED,
algorithm, parameters, NULL);
subjpubkey = asn1container(ASN1_BIT_STRING, &lastbytebitcount,
pubkey, NULL);
subjpubkeyinfo = asn1container(ASN1_SEQ | ASN1_CONSTRUCTED,
algorithmid, subjpubkey, NULL);
asn1delete(algorithm);
asn1delete(algorithmid);
asn1delete(subjpubkey);
if(!algorithm || !algorithmid || !subjpubkey) {
asn1delete(subjpubkeyinfo);
subjpubkeyinfo = NULL;
}
return subjpubkeyinfo;
}
static asn1Element *
rsasubjectpublickeyinfo(asn1Element *pubkey)
{
asn1Element *parameters;
asn1Element *subjpubkeyinfo;
parameters = asn1bytes(ASN1_NULL, NULL, 0);
subjpubkeyinfo = subjectpublickeyinfo(pubkey,
OID_rsaEncryption, parameters);
asn1delete(parameters);
if(!parameters) {
asn1delete(subjpubkeyinfo);
subjpubkeyinfo = NULL;
}
return subjpubkeyinfo;
}
static asn1Element *
privatekeyinfo(asn1Element *privkey, const unsigned char *algo,
asn1Element *parameters)
{
asn1Element *version;
asn1Element *privatekey;
asn1Element *algorithm;
asn1Element *privatekeyalgorithm;
asn1Element *privkeyinfo;
unsigned int algosize = *algo++;
/* Build a PKCS#8 PrivateKeyInfo. */
version = asn1bytes(ASN1_INTEGER, "\0", 1);
algorithm = asn1bytes(ASN1_OBJ_ID, algo, algosize);
privatekeyalgorithm = asn1container(ASN1_SEQ | ASN1_CONSTRUCTED,
algorithm, parameters, NULL);
privatekey = asn1container(ASN1_OCTET_STRING, privkey, NULL);
privkeyinfo = asn1container(ASN1_SEQ | ASN1_CONSTRUCTED, version,
privatekeyalgorithm, privatekey, NULL);
asn1delete(version);
asn1delete(algorithm);
asn1delete(privatekeyalgorithm);
if(!version || !algorithm || !privatekeyalgorithm) {
asn1delete(privkeyinfo);
privkeyinfo = NULL;
}
return privkeyinfo;
}
static asn1Element *
rsaprivatekeyinfo(asn1Element *privkey)
{
asn1Element *parameters;
asn1Element *privkeyinfo;
parameters = asn1bytes(ASN1_NULL, NULL, 0);
privkeyinfo = privatekeyinfo(privkey, OID_rsaEncryption, parameters);
asn1delete(parameters);
if(!parameters) {
asn1delete(privkeyinfo);
privkeyinfo = NULL;
}
return privkeyinfo;
}
/*******************************************************************
*
* OS/400 QC3 crypto-library backend: big numbers support.
*
*******************************************************************/
_libssh2_bn *
_libssh2_bn_init(void)
{
_libssh2_bn *bignum;
bignum = (_libssh2_bn *) malloc(sizeof *bignum);
if(bignum) {
bignum->bignum = NULL;
bignum->length = 0;
}
return bignum;
}
void
_libssh2_bn_free(_libssh2_bn *bn)
{
if(bn) {
if(bn->bignum) {
#ifdef LIBSSH2_CLEAR_MEMORY
if(bn->length)
memset((char *) bn->bignum, 0, bn->length);
#endif
free(bn->bignum);
}
free((char *) bn);
}
}
static int
_libssh2_bn_resize(_libssh2_bn *bn, size_t newlen)
{
unsigned char *bignum;
if(!bn)
return -1;
if(newlen == bn->length)
return 0;
if(!bn->bignum)
bignum = (unsigned char *) malloc(newlen);
else {
#ifdef LIBSSH2_CLEAR_MEMORY
if(newlen < bn->length)
memset((char *) bn->bignum + newlen, 0, bn->length - newlen);
#endif
if(!newlen) {
free((char *) bn->bignum);
bn->bignum = NULL;
bn->length = 0;
return 0;
}
bignum = (unsigned char *) realloc((char *) bn->bignum, newlen);
}
if(!bignum)
return -1;
if(newlen > bn->length)
memset((char *) bignum + bn->length, 0, newlen - bn->length);
bn->bignum = bignum;
bn->length = newlen;
return 0;
}
unsigned long
_libssh2_bn_bits(_libssh2_bn *bn)
{
unsigned int i;
unsigned char b;
if(bn && bn->bignum) {
for(i = bn->length; i--;)
b = bn->bignum[i];
if(b) {
i *= 8;
do {
i++;
} while(b >>= 1);
return i;
}
}
return 0;
}
int
_libssh2_bn_from_bin(_libssh2_bn *bn, int len, const unsigned char *val)
{
int i;
if(!bn || (len && !val))
return -1;
for(; len && !*val; len--)
val++;
if(_libssh2_bn_resize(bn, len))
return -1;
for(i = len; i--;)
bn->bignum[i] = *val++;
return 0;
}
int
_libssh2_bn_set_word(_libssh2_bn *bn, unsigned long val)
{
val = htonl(val);
return _libssh2_bn_from_bin(bn, sizeof val, (unsigned char *) &val);
}
int
_libssh2_bn_to_bin(_libssh2_bn *bn, unsigned char *val)
{
int i;
if(!bn || !val)
return -1;
for(i = bn->length; i--;)
*val++ = bn->bignum[i];
return 0;
}
static int
_libssh2_bn_from_bn(_libssh2_bn *to, _libssh2_bn *from)
{
int i;
if(!to || !from)
return -1;
if(_libssh2_bn_resize(to, from->length))
return -1;
for(i = to->length; i--;)
to->bignum[i] = from->bignum[i];
return 0;
}
int
_libssh2_random(unsigned char *buf, int len)
{
Qc3GenPRNs(buf, len,
Qc3PRN_TYPE_NORMAL, Qc3PRN_NO_PARITY, (char *) &ecnull);
/* FIXME: any error is silently discarded! But Qc3GenPRNs could fail,
including if "The system seed digest is not ready" dixit IBM doc. */
return 0;
}
/*******************************************************************
*
* OS/400 QC3 crypto-library backend: crypto context support.
*
*******************************************************************/
static _libssh2_os400qc3_crypto_ctx *
libssh2_init_crypto_ctx(_libssh2_os400qc3_crypto_ctx *ctx)
{
if(!ctx)
ctx = (_libssh2_os400qc3_crypto_ctx *) malloc(sizeof *ctx);
if(ctx) {
memset((char *) ctx, 0, sizeof *ctx);
ctx->hash.Final_Op_Flag = Qc3_Continue;
}
return ctx;
}
static int
null_token(const char *token)
{
return !memcmp(token, nulltoken.Key_Context_Token,
sizeof nulltoken.Key_Context_Token);
}
void
_libssh2_os400qc3_crypto_dtor(_libssh2_os400qc3_crypto_ctx *x)
{
if(!x)
return;
if(!null_token(x->hash.Alg_Context_Token)) {
Qc3DestroyAlgorithmContext(x->hash.Alg_Context_Token,
(char *) &ecnull);
memset(x->hash.Alg_Context_Token, 0, sizeof x->hash.Alg_Context_Token);
}
if(!null_token(x->key.Key_Context_Token)) {
Qc3DestroyKeyContext(x->key.Key_Context_Token, (char *) &ecnull);
memset(x->key.Key_Context_Token, 0, sizeof x->key.Key_Context_Token);
}
if(x->kek) {
_libssh2_os400qc3_crypto_dtor(x->kek);
free((char *) x->kek);
x->kek = NULL;
}
}
/*******************************************************************
*
* OS/400 QC3 crypto-library backend: hash algorithms support.
*
*******************************************************************/
int
libssh2_os400qc3_hash_init(Qc3_Format_ALGD0100_T *x, unsigned int algorithm)
{
Qc3_Format_ALGD0500_T algd;
Qus_EC_t errcode;
if(!x)
return 0;
memset((char *) x, 0, sizeof *x);
x->Final_Op_Flag = Qc3_Continue;
algd.Hash_Alg = algorithm;
set_EC_length(errcode, sizeof errcode);
Qc3CreateAlgorithmContext((char *) &algd, Qc3_Alg_Hash,
x->Alg_Context_Token, &errcode);
return errcode.Bytes_Available? 0: 1;
}
void
libssh2_os400qc3_hash_update(Qc3_Format_ALGD0100_T *ctx,
const unsigned char *data, int len)
{
char dummy[64];
ctx->Final_Op_Flag = Qc3_Continue;
Qc3CalculateHash((char *) data, &len, Qc3_Data, (char *) ctx,
Qc3_Alg_Token, anycsp, NULL, dummy, (char *) &ecnull);
}
void
libssh2_os400qc3_hash_final(Qc3_Format_ALGD0100_T *ctx, unsigned char *out)
{
char data;
ctx->Final_Op_Flag = Qc3_Final;
Qc3CalculateHash(&data, &zero, Qc3_Data, (char *) ctx, Qc3_Alg_Token,
anycsp, NULL, (char *) out, (char *) &ecnull);
Qc3DestroyAlgorithmContext(ctx->Alg_Context_Token, (char *) &ecnull);
memset(ctx->Alg_Context_Token, 0, sizeof ctx->Alg_Context_Token);
}
int
libssh2_os400qc3_hash(const unsigned char *message, unsigned long len,
unsigned char *out, unsigned int algo)
{
Qc3_Format_ALGD0100_T ctx;
if(!libssh2_os400qc3_hash_init(&ctx, algo))
return 1;
libssh2_os400qc3_hash_update(&ctx, message, len);
libssh2_os400qc3_hash_final(&ctx, out);
return 0;
}
void
libssh2_os400qc3_hmac_init(_libssh2_os400qc3_crypto_ctx *ctx,
int algo, size_t minkeylen, void *key, int keylen)
{
if(keylen < minkeylen) {
char *lkey = alloca(minkeylen);
/* Pad key with zeroes if too short. */
if(!lkey)
return;
memcpy(lkey, (char *) key, keylen);
memset(lkey + keylen, 0, minkeylen - keylen);
key = (void *) lkey;
keylen = minkeylen;
}
libssh2_os400qc3_hash_init(&ctx->hash, algo);
Qc3CreateKeyContext((char *) key, &keylen, binstring, &algo, qc3clear,
NULL, NULL, ctx->key.Key_Context_Token,
(char *) &ecnull);
}
void
libssh2_os400qc3_hmac_update(_libssh2_os400qc3_crypto_ctx *ctx,
unsigned char *data, int len)
{
char dummy[64];
ctx->hash.Final_Op_Flag = Qc3_Continue;
Qc3CalculateHMAC((char *) data, &len, Qc3_Data, (char *) &ctx->hash,
Qc3_Alg_Token, ctx->key.Key_Context_Token, Qc3_Key_Token,
anycsp, NULL, dummy, (char *) &ecnull);
}
void
libssh2_os400qc3_hmac_final(_libssh2_os400qc3_crypto_ctx *ctx,
unsigned char *out)
{
char data;
ctx->hash.Final_Op_Flag = Qc3_Final;
Qc3CalculateHMAC((char *) data, &zero, Qc3_Data, (char *) &ctx->hash,
Qc3_Alg_Token, ctx->key.Key_Context_Token, Qc3_Key_Token,
anycsp, NULL, (char *) out, (char *) &ecnull);
}
/*******************************************************************
*
* OS/400 QC3 crypto-library backend: cipher algorithms support.
*
*******************************************************************/
int
_libssh2_cipher_init(_libssh2_cipher_ctx *h, _libssh2_cipher_type(algo),
unsigned char *iv, unsigned char *secret, int encrypt)
{
Qc3_Format_ALGD0200_T algd;
Qus_EC_t errcode;
(void) encrypt;
if(!h)
return -1;
libssh2_init_crypto_ctx(h);
algd.Block_Cipher_Alg = algo.algo;
algd.Block_Length = algo.size;
algd.Mode = algo.mode;
algd.Pad_Option = Qc3_No_Pad;
algd.Pad_Character = 0;
algd.Reserved = 0;
algd.MAC_Length = 0;
algd.Effective_Key_Size = 0;
memset(algd.Init_Vector, 0, sizeof algd.Init_Vector);
if(algo.mode != Qc3_ECB && algo.size)
memcpy(algd.Init_Vector, iv, algo.size);
set_EC_length(errcode, sizeof errcode);
Qc3CreateAlgorithmContext((char *) &algd, algo.fmt,
h->hash.Alg_Context_Token, &errcode);
if(errcode.Bytes_Available)
return -1;
Qc3CreateKeyContext((char *) secret, &algo.keylen, binstring,
&algo.algo, qc3clear, NULL, NULL,
h->key.Key_Context_Token, (char *) &errcode);
if(errcode.Bytes_Available) {
_libssh2_os400qc3_crypto_dtor(h);
return -1;
}
return 0;
}
int
_libssh2_cipher_crypt(_libssh2_cipher_ctx *ctx,
_libssh2_cipher_type(algo),
int encrypt, unsigned char *block, size_t blocksize)
{
Qus_EC_t errcode;
int outlen;
int blksize = blocksize;
(void) algo;
set_EC_length(errcode, sizeof errcode);
if(encrypt)
Qc3EncryptData((char *) block, &blksize, Qc3_Data,
ctx->hash.Alg_Context_Token, Qc3_Alg_Token,
ctx->key.Key_Context_Token, Qc3_Key_Token, anycsp, NULL,
(char *) block, &blksize, &outlen, (char *) &errcode);
else
Qc3DecryptData((char *) block, &blksize,
ctx->hash.Alg_Context_Token, Qc3_Alg_Token,
ctx->key.Key_Context_Token, Qc3_Key_Token, anycsp, NULL,
(char *) block, &blksize, &outlen, (char *) &errcode);
return errcode.Bytes_Available? -1: 0;
}
/*******************************************************************
*
* OS/400 QC3 crypto-library backend: RSA support.
*
*******************************************************************/
int
_libssh2_rsa_new(libssh2_rsa_ctx **rsa,
const unsigned char *edata, unsigned long elen,
const unsigned char *ndata, unsigned long nlen,
const unsigned char *ddata, unsigned long dlen,
const unsigned char *pdata, unsigned long plen,
const unsigned char *qdata, unsigned long qlen,
const unsigned char *e1data, unsigned long e1len,
const unsigned char *e2data, unsigned long e2len,
const unsigned char *coeffdata, unsigned long coefflen)
{
libssh2_rsa_ctx *ctx;
_libssh2_bn *e = _libssh2_bn_init_from_bin();
_libssh2_bn *n = _libssh2_bn_init_from_bin();
_libssh2_bn *d = NULL;
_libssh2_bn *p = NULL;
_libssh2_bn *q = NULL;
_libssh2_bn *e1 = NULL;
_libssh2_bn *e2 = NULL;
_libssh2_bn *coeff = NULL;
asn1Element *key = NULL;
asn1Element *structkey = NULL;
Qc3_Format_ALGD0400_T algd;
Qus_EC_t errcode;
int keytype;
int ret = 0;
int i;
ctx = libssh2_init_crypto_ctx(NULL);
if(!ctx)
ret = -1;
if(!ret) {
_libssh2_bn_from_bin(e, elen, edata);
_libssh2_bn_from_bin(n, nlen, ndata);
if(!e || !n)
ret = -1;
}
if(!ret && ddata) {
/* Private key. */
d = _libssh2_bn_init_from_bin();
_libssh2_bn_from_bin(d, dlen, ddata);
p = _libssh2_bn_init_from_bin();
_libssh2_bn_from_bin(p, plen, pdata);
q = _libssh2_bn_init_from_bin();
_libssh2_bn_from_bin(q, qlen, qdata);
e1 = _libssh2_bn_init_from_bin();
_libssh2_bn_from_bin(e1, e1len, e1data);
e2 = _libssh2_bn_init_from_bin();
_libssh2_bn_from_bin(e2, e2len, e2data);
coeff = _libssh2_bn_init_from_bin();
_libssh2_bn_from_bin(coeff, coefflen, coeffdata);
if(!d || !p || !q ||!e1 || !e2 || !coeff)
ret = -1;
if(!ret) {
/* Build a PKCS#8 private key. */
key = rsaprivatekey(e, n, d, p, q, e1, e2, coeff);
structkey = rsaprivatekeyinfo(key);
}
keytype = Qc3_RSA_Private;
}
else if(!ret) {
key = rsapublickey(e, n);
structkey = rsasubjectpublickeyinfo(key);
keytype = Qc3_RSA_Public;
}
if(!key || !structkey)
ret = -1;
set_EC_length(errcode, sizeof errcode);
if(!ret) {
/* Create the algorithm context. */
algd.Public_Key_Alg = Qc3_RSA;
algd.PKA_Block_Format = Qc3_PKCS1_01;
memset(algd.Reserved, 0, sizeof algd.Reserved);
algd.Signing_Hash_Alg = Qc3_SHA1;
Qc3CreateAlgorithmContext((char *) &algd, Qc3_Alg_Public_Key,
ctx->hash.Alg_Context_Token, &errcode);
if(errcode.Bytes_Available)
ret = -1;
ctx->hash.Final_Op_Flag = Qc3_Continue;
}
/* Create the key context. */
if(!ret) {
i = structkey->end - structkey->header;
Qc3CreateKeyContext(structkey->header, &i, berstring, &keytype,
qc3clear, NULL, NULL, ctx->key.Key_Context_Token,
(char *) &errcode);
if(errcode.Bytes_Available)
ret = -1;
}
_libssh2_bn_free(e);
_libssh2_bn_free(n);
_libssh2_bn_free(d);
_libssh2_bn_free(p);
_libssh2_bn_free(q);
_libssh2_bn_free(e1);
_libssh2_bn_free(e2);
_libssh2_bn_free(coeff);
asn1delete(key);
asn1delete(structkey);
if(ret && ctx) {
_libssh2_rsa_free(ctx);
ctx = NULL;
}
*rsa = ctx;
return ret;
}
/*******************************************************************
*
* OS/400 QC3 crypto-library backend: Diffie-Hellman support.
*
*******************************************************************/
void
_libssh2_os400qc3_dh_init(_libssh2_dh_ctx *dhctx)
{
memset((char *) dhctx, 0, sizeof *dhctx);
}
int
_libssh2_os400qc3_dh_key_pair(_libssh2_dh_ctx *dhctx, _libssh2_bn *public,
_libssh2_bn *g, _libssh2_bn *p, int group_order)
{
asn1Element *prime;
asn1Element *base;
asn1Element *dhparameter;
asn1Element *dhkeyagreement;
asn1Element *pkcs3;
int pkcs3len;
char *pubkey;
int pubkeysize;
int pubkeylen;
Qus_EC_t errcode;
(void) group_order;
/* Build the PKCS#3 structure. */
base = asn1uint(g);
prime = asn1uint(p);
dhparameter = asn1container(ASN1_SEQ | ASN1_CONSTRUCTED,
prime, base, NULL);
asn1delete(base);
asn1delete(prime);
dhkeyagreement = asn1bytes(ASN1_OBJ_ID,
OID_dhKeyAgreement + 1, OID_dhKeyAgreement[0]);
pkcs3 = asn1container(ASN1_SEQ | ASN1_CONSTRUCTED,
dhkeyagreement, dhparameter, NULL);
asn1delete(dhkeyagreement);
asn1delete(dhparameter);
if(!base || !prime || !dhparameter ||
!dhkeyagreement || !dhparameter || !pkcs3) {
asn1delete(pkcs3);
return -1;
}
pkcs3len = pkcs3->end - pkcs3->header;
pubkeysize = (_libssh2_bn_bits(p) + 7) >> 3;
pubkey = alloca(pubkeysize);
set_EC_length(errcode, sizeof errcode);
Qc3GenDHKeyPair((char *) pkcs3->header, &pkcs3len, anycsp, NULL,
dhctx->token, pubkey, &pubkeysize, &pubkeylen, &errcode);
asn1delete(pkcs3);
if(errcode.Bytes_Available)
return -1;
return _libssh2_bn_from_bin(public, pubkeylen, (unsigned char *) pubkey);
}
int
_libssh2_os400qc3_dh_secret(_libssh2_dh_ctx *dhctx, _libssh2_bn *secret,
_libssh2_bn *f, _libssh2_bn *p)
{
char *pubkey;
int pubkeysize;
char *secretbuf;
int secretbufsize;
int secretbuflen;
Qus_EC_t errcode;
pubkeysize = (_libssh2_bn_bits(f) + 7) >> 3;
pubkey = alloca(pubkeysize);
_libssh2_bn_to_bin(f, pubkey);
secretbufsize = (_libssh2_bn_bits(p) + 7) >> 3;
secretbuf = alloca(pubkeysize);
set_EC_length(errcode, sizeof errcode);
Qc3CalculateDHSecretKey(dhctx->token, pubkey, &pubkeysize,
secretbuf, &secretbufsize, &secretbuflen,
&errcode);
if(errcode.Bytes_Available)
return -1;
return _libssh2_bn_from_bin(secret,
secretbuflen, (unsigned char *) secretbuf);
}
void
_libssh2_os400qc3_dh_dtor(_libssh2_dh_ctx *dhctx)
{
if(!null_token(dhctx->token)) {
Qc3DestroyAlgorithmContext(dhctx->token, (char *) &ecnull);
memset((char *) dhctx, 0, sizeof *dhctx);
}
}
/*******************************************************************
*
* OS/400 QC3 crypto-library backend: PKCS#5 supplement.
*
*******************************************************************/
static int
oidcmp(const asn1Element *e, const unsigned char *oid)
{
int i = e->end - e->beg - *oid++;
if(*e->header != ASN1_OBJ_ID)
return -2;
if(!i)
i = memcmp(e->beg, oid, oid[-1]);
return i;
}
static int
asn1getword(asn1Element *e, unsigned long *v)
{
unsigned long a;
const unsigned char *cp;
if(*e->header != ASN1_INTEGER)
return -1;
for(cp = e->beg; cp < e->end && !*cp; cp++)
;
if(e->end - cp > sizeof a)
return -1;
for(a = 0; cp < e->end; cp++)
a = (a << 8) | *cp;
*v = a;
return 0;
}
static int
pbkdf1(LIBSSH2_SESSION *session, char **dk, const unsigned char *passphrase,
pkcs5params *pkcs5)
{
int i;
Qc3_Format_ALGD0100_T hctx;
int len = pkcs5->saltlen;
char *data = (char *) pkcs5->salt;
*dk = NULL;
if(pkcs5->dklen > pkcs5->hashlen)
return -1;
/* Allocate the derived key buffer. */
*dk = LIBSSH2_ALLOC(session, pkcs5->hashlen);
if(!*dk)
return -1;
/* Initial hash. */
libssh2_os400qc3_hash_init(&hctx, pkcs5->hash);
libssh2_os400qc3_hash_update(&hctx, passphrase, strlen(passphrase));
hctx.Final_Op_Flag = Qc3_Final;
Qc3CalculateHash((char *) pkcs5->salt, &len, Qc3_Data, (char *) &hctx,
Qc3_Alg_Token, anycsp, NULL, *dk, (char *) &ecnull);
/* Iterate. */
len = pkcs5->hashlen;
for(i = 1; i < pkcs5->itercount; i++)
Qc3CalculateHash((char *) *dk, &len, Qc3_Data, (char *) &hctx,
Qc3_Alg_Token, anycsp, NULL, *dk, (char *) &ecnull);
/* Special stuff for PBES1: split derived key into 8-byte key and 8-byte
initialization vector. */
pkcs5->dklen = 8;
pkcs5->ivlen = 8;
pkcs5->iv = *dk + 8;
/* Clean-up and exit. */
Qc3DestroyAlgorithmContext(hctx.Alg_Context_Token, (char *) &ecnull);
return 0;
}
static int
pbkdf2(LIBSSH2_SESSION *session, char **dk, const unsigned char *passphrase,
pkcs5params *pkcs5)
{
size_t i;
size_t k;
int j;
int l;
uint32_t ni;
unsigned long long t;
char *mac;
char *buf;
_libssh2_os400qc3_crypto_ctx hctx;
*dk = NULL;
t = ((unsigned long long) pkcs5->dklen + pkcs5->hashlen - 1) /
pkcs5->hashlen;
if(t > 0xFFFFFFFF)
return -1;
mac = alloca(pkcs5->hashlen);
if(!mac)
return -1;
/* Allocate the derived key buffer. */
l = t;
buf = LIBSSH2_ALLOC(session, l * pkcs5->hashlen);
if(!buf)
return -1;
*dk = buf;
/* Create an HMAC context for our computations. */
libssh2_os400qc3_hmac_init(&hctx, pkcs5->hash, pkcs5->hashlen,
(void *) passphrase, strlen(passphrase));
/* Process each hLen-size blocks. */
for(i = 1; i <= l; i++) {
ni = htonl(i);
libssh2_os400qc3_hmac_update(&hctx, pkcs5->salt, pkcs5->saltlen);
libssh2_os400qc3_hmac_update(&hctx, (char *) &ni, sizeof ni);
libssh2_os400qc3_hmac_final(&hctx, mac);
memcpy(buf, mac, pkcs5->hashlen);
for(j = 1; j < pkcs5->itercount; j++) {
libssh2_os400qc3_hmac_update(&hctx, mac, pkcs5->hashlen);
libssh2_os400qc3_hmac_final(&hctx, mac);
for(k = 0; k < pkcs5->hashlen; k++)
buf[k] ^= mac[k];
}
buf += pkcs5->hashlen;
}
/* Computation done. Release HMAC context. */
_libssh2_os400qc3_crypto_dtor(&hctx);
return 0;
}
static int
parse_pkcs5_algorithm(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
asn1Element *algid, pkcs5algo **algotable)
{
asn1Element oid;
asn1Element param;
char *cp;
cp = getASN1Element(&oid, algid->beg, algid->end);
if(!cp || *oid.header != ASN1_OBJ_ID)
return -1;
param.header = NULL;
if(cp < algid->end)
cp = getASN1Element(¶m, cp, algid->end);
if(cp != algid->end)
return -1;
for(; *algotable; algotable++)
if(!oidcmp(&oid, (*algotable)->oid))
return (*(*algotable)->parse)(session, pkcs5, *algotable,
param.header? ¶m: NULL);
return -1;
}
static int
parse_pbes2(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param)
{
asn1Element keyDerivationFunc;
asn1Element encryptionScheme;
char *cp;
if(!param || *param->header != (ASN1_SEQ | ASN1_CONSTRUCTED))
return -1;
cp = getASN1Element(&keyDerivationFunc, param->beg, param->end);
if(!cp || *keyDerivationFunc.header != (ASN1_SEQ | ASN1_CONSTRUCTED))
return -1;
if(getASN1Element(&encryptionScheme, cp, param->end) != param->end ||
*encryptionScheme.header != (ASN1_SEQ | ASN1_CONSTRUCTED))
return -1;
if(parse_pkcs5_algorithm(session, pkcs5, &encryptionScheme, pbes2enctable))
return -1;
if(parse_pkcs5_algorithm(session, pkcs5, &keyDerivationFunc, pbkdf2table))
return -1;
return 0;
}
static int
parse_pbkdf2(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param)
{
asn1Element salt;
asn1Element iterationCount;
asn1Element keyLength;
asn1Element prf;
unsigned long itercount;
char *cp;
if(!param || *param->header != (ASN1_SEQ | ASN1_CONSTRUCTED))
return -1;
cp = getASN1Element(&salt, param->beg, param->end);
/* otherSource not supported. */
if(!cp || *salt.header != ASN1_OCTET_STRING)
return -1;
cp = getASN1Element(&iterationCount, cp, param->end);
if(!cp || *iterationCount.header != ASN1_INTEGER)
return -1;
keyLength.header = prf.header = NULL;
if(cp < param->end) {
cp = getASN1Element(&prf, cp, param->end);
if(!cp)
return -1;
if(*prf.header == ASN1_INTEGER) {
keyLength = prf;
prf.header = NULL;
if(cp < param->end)
cp = getASN1Element(&prf, cp, param->end);
}
if(cp != param->end)
return -1;
}
pkcs5->hash = algo->hash;
pkcs5->hashlen = algo->hashlen;
if(prf.header) {
if(*prf.header != (ASN1_SEQ | ASN1_CONSTRUCTED))
return -1;
if(parse_pkcs5_algorithm(session, pkcs5, &prf, kdf2prftable))
return -1;
}
pkcs5->saltlen = salt.end - salt.beg;
pkcs5->salt = salt.beg;
if(asn1getword(&iterationCount, &itercount) ||
!itercount || itercount > 100000)
return -1;
pkcs5->itercount = itercount;
pkcs5->kdf = pbkdf2;
return 0;
}
static int
parse_hmacWithSHA1(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param)
{
if(!param || *param->header != ASN1_NULL)
return -1;
pkcs5->hash = algo->hash;
pkcs5->hashlen = algo->hashlen;
return 0;
}
static int
parse_iv(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param)
{
if(!param || *param->header != ASN1_OCTET_STRING ||
param->end - param->beg != algo->ivlen)
return -1;
pkcs5->cipher = algo->cipher;
pkcs5->blocksize = algo->blocksize;
pkcs5->mode = algo->mode;
pkcs5->padopt = algo->padopt;
pkcs5->padchar = algo->padchar;
pkcs5->dklen = algo->keylen;
pkcs5->ivlen = algo->ivlen;
pkcs5->iv = param->beg;
return 0;
}
static int
parse_rc2(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param)
{
asn1Element iv;
unsigned long effkeysize;
char *cp;
if(!param || *param->header != (ASN1_SEQ | ASN1_CONSTRUCTED))
return -1;
cp = getASN1Element(&iv, param->beg, param->end);
if(!cp)
return -1;
effkeysize = algo->effkeysize;
if(*iv.header == ASN1_INTEGER) {
if(asn1getword(&iv, &effkeysize) || effkeysize > 1024)
return -1;
cp = getASN1Element(&iv, cp, param->end);
if(effkeysize < 256)
switch(effkeysize) {
case 160:
effkeysize = 40;
case 120:
effkeysize = 64;
case 58:
effkeysize = 128;
break;
default:
return -1;
}
}
if(effkeysize > 1024 || cp != param->end ||
*iv.header != ASN1_OCTET_STRING || iv.end - iv.beg != algo->ivlen)
return -1;
pkcs5->cipher = algo->cipher;
pkcs5->blocksize = algo->blocksize;
pkcs5->mode = algo->mode;
pkcs5->padopt = algo->padopt;
pkcs5->padchar = algo->padchar;
pkcs5->ivlen = algo->ivlen;
pkcs5->iv = iv.beg;
pkcs5->effkeysize = effkeysize;
pkcs5->dklen = (effkeysize + 8 - 1) / 8;
return 0;
}
static int
parse_pbes1(LIBSSH2_SESSION *session, pkcs5params *pkcs5,
pkcs5algo *algo, asn1Element *param)
{
asn1Element salt;
asn1Element iterationCount;
unsigned long itercount;
char *cp;
if(!param || *param->header != (ASN1_SEQ | ASN1_CONSTRUCTED))
return -1;
cp = getASN1Element(&salt, param->beg, param->end);
if(!cp || *salt.header != ASN1_OCTET_STRING ||
salt.end - salt.beg != algo->saltlen)
return -1;
if(getASN1Element(&iterationCount, cp, param->end) != param->end ||
*iterationCount.header != ASN1_INTEGER)
return -1;
if(asn1getword(&iterationCount, &itercount) ||
!itercount || itercount > 100000)
return -1;
pkcs5->cipher = algo->cipher;
pkcs5->blocksize = algo->blocksize;
pkcs5->mode = algo->mode;
pkcs5->padopt = algo->padopt;
pkcs5->padchar = algo->padchar;
pkcs5->hash = algo->hash;
pkcs5->hashlen = algo->hashlen;
pkcs5->dklen = 16;
pkcs5->saltlen = algo->saltlen;
pkcs5->effkeysize = algo->effkeysize;
pkcs5->salt = salt.beg;
pkcs5->kdf = pbkdf1;
pkcs5->itercount = itercount;
return 0;
}
static int
pkcs8kek(LIBSSH2_SESSION *session, _libssh2_os400qc3_crypto_ctx **ctx,
const unsigned char *data, unsigned int datalen,
const unsigned char *passphrase, asn1Element *privkeyinfo)
{
asn1Element encprivkeyinfo;
asn1Element pkcs5alg;
pkcs5params pkcs5;
size_t pplen;
char *cp;
unsigned long t;
int i;
char *dk = NULL;
Qc3_Format_ALGD0200_T algd;
Qus_EC_t errcode;
/* Determine if the PKCS#8 data is encrypted and, if so, set-up a
key encryption key and algorithm in context.
Return 1 if encrypted, 0, if not, -1 if error. */
*ctx = NULL;
privkeyinfo->beg = (char *) data;
privkeyinfo->end = privkeyinfo->beg + datalen;
/* If no passphrase is given, it cannot be an encrypted key. */
if(!passphrase || !*passphrase)
return 0;
/* Parse PKCS#8 data, checking if ASN.1 format is PrivateKeyInfo or
EncryptedPrivateKeyInfo. */
if(getASN1Element(&encprivkeyinfo, privkeyinfo->beg, privkeyinfo->end) !=
(char *) data + datalen ||
*encprivkeyinfo.header != (ASN1_SEQ | ASN1_CONSTRUCTED))
return -1;
cp = getASN1Element(&pkcs5alg, encprivkeyinfo.beg, encprivkeyinfo.end);
if(!cp)
return -1;
switch(*pkcs5alg.header) {
case ASN1_INTEGER: /* Version. */
return 0; /* This is a PrivateKeyInfo --> not encrypted. */
case ASN1_SEQ | ASN1_CONSTRUCTED: /* AlgorithIdentifier. */
break; /* This is an EncryptedPrivateKeyInfo --> encrypted. */
default:
return -1; /* Unrecognized: error. */
}
/* Get the encrypted key data. */
if(getASN1Element(privkeyinfo, cp, encprivkeyinfo.end) !=
encprivkeyinfo.end || *privkeyinfo->header != ASN1_OCTET_STRING)
return -1;
/* PKCS#5: parse the PBES AlgorithmIdentifier and recursively get all
encryption parameters. */
memset((char *) &pkcs5, 0, sizeof pkcs5);
if(parse_pkcs5_algorithm(session, &pkcs5, &pkcs5alg, pbestable))
return -1;
/* Compute the derived key. */
if((*pkcs5.kdf)(session, &dk, passphrase, &pkcs5))
return -1;
/* Prepare the algorithm descriptor. */
memset((char *) &algd, 0, sizeof algd);
algd.Block_Cipher_Alg = pkcs5.cipher;
algd.Block_Length = pkcs5.blocksize;
algd.Mode = pkcs5.mode;
algd.Pad_Option = pkcs5.padopt;
algd.Pad_Character = pkcs5.padchar;
algd.Effective_Key_Size = pkcs5.effkeysize;
memcpy(algd.Init_Vector, pkcs5.iv, pkcs5.ivlen);
/* Create the key and algorithm context tokens. */
*ctx = libssh2_init_crypto_ctx(NULL);
if(!*ctx) {
LIBSSH2_FREE(session, dk);
return -1;
}
libssh2_init_crypto_ctx(*ctx);
set_EC_length(errcode, sizeof errcode);
Qc3CreateKeyContext(dk, &pkcs5.dklen, binstring, &algd.Block_Cipher_Alg,
qc3clear, NULL, NULL, (*ctx)->key.Key_Context_Token,
(char *) &errcode);
LIBSSH2_FREE(session, dk);
if(errcode.Bytes_Available) {
free((char *) *ctx);
*ctx = NULL;
return -1;
}
Qc3CreateAlgorithmContext((char *) &algd, Qc3_Alg_Block_Cipher,
(*ctx)->hash.Alg_Context_Token, &errcode);
if(errcode.Bytes_Available) {
Qc3DestroyKeyContext((*ctx)->key.Key_Context_Token, (char *) &ecnull);
free((char *) *ctx);
*ctx = NULL;
return -1;
}
return 1; /* Tell it's encrypted. */
}
static int
rsapkcs8privkey(LIBSSH2_SESSION *session,
const unsigned char *data, unsigned int datalen,
const unsigned char *passphrase, void *loadkeydata)
{
libssh2_rsa_ctx *ctx = (libssh2_rsa_ctx *) loadkeydata;
char keyform = Qc3_Clear;
char *kek = NULL;
char *kea = NULL;
_libssh2_os400qc3_crypto_ctx *kekctx;
asn1Element pki;
int pkilen;
Qus_EC_t errcode;
switch(pkcs8kek(session, &kekctx, data, datalen, passphrase, &pki)) {
case 1:
keyform = Qc3_Encrypted;
kek = kekctx->key.Key_Context_Token;
kea = kekctx->hash.Alg_Context_Token;
case 0:
break;
default:
return -1;
}
set_EC_length(errcode, sizeof errcode);
pkilen = pki.end - pki.beg;
Qc3CreateKeyContext((unsigned char *) pki.beg, &pkilen, berstring,
rsaprivate, &keyform, kek, kea,
ctx->key.Key_Context_Token, (char *) &errcode);
if(errcode.Bytes_Available) {
if(kekctx)
_libssh2_os400qc3_crypto_dtor(kekctx);
return -1;
}
ctx->kek = kekctx;
return 0;
}
static char *
storewithlength(char *p, const char *data, int length)
{
_libssh2_htonu32(p, length);
if(length)
memcpy(p + 4, data, length);
return p + 4 + length;
}
static int
sshrsapubkey(LIBSSH2_SESSION *session, char **sshpubkey,
asn1Element *params, asn1Element *key, const char *method)
{
int methlen = strlen(method);
asn1Element keyseq;
asn1Element m;
asn1Element e;
int len;
char *cp;
if(getASN1Element(&keyseq, key->beg + 1, key->end) != key->end ||
*keyseq.header != (ASN1_SEQ | ASN1_CONSTRUCTED))
return -1;
if(!getASN1Element(&m, keyseq.beg, keyseq.end) ||
*m.header != ASN1_INTEGER)
return -1;
if(getASN1Element(&e, m.end, keyseq.end) != keyseq.end ||
*e.header != ASN1_INTEGER)
return -1;
len = 4 + methlen + 4 + (e.end - e.beg) + 4 + (m.end - m.beg);
cp = LIBSSH2_ALLOC(session, len);
if(!cp)
return -1;
*sshpubkey = cp;
cp = storewithlength(cp, method, methlen);
cp = storewithlength(cp, e.beg, e.end - e.beg);
cp = storewithlength(cp, m.beg, m.end - m.beg);
return len;
}
static int
rsapkcs8pubkey(LIBSSH2_SESSION *session,
const unsigned char *data, unsigned int datalen,
const unsigned char *passphrase, void *loadkeydata)
{
loadpubkeydata *p = (loadpubkeydata *) loadkeydata;
char *buf;
int len;
char *cp;
int i;
char keyform = Qc3_Clear;
char *kek = NULL;
char *kea = NULL;
_libssh2_os400qc3_crypto_ctx *kekctx;
asn1Element subjpubkeyinfo;
asn1Element algorithmid;
asn1Element algorithm;
asn1Element subjpubkey;
asn1Element parameters;
asn1Element pki;
int pkilen;
Qus_EC_t errcode;
buf = alloca(datalen);
if(!buf)
return -1;
switch(pkcs8kek(session, &kekctx, data, datalen, passphrase, &pki)) {
case 1:
keyform = Qc3_Encrypted;
kek = kekctx->key.Key_Context_Token;
kea = kekctx->hash.Alg_Context_Token;
case 0:
break;
default:
return -1;
}
set_EC_length(errcode, sizeof errcode);
pkilen = pki.end - pki.beg;
Qc3ExtractPublicKey(pki.beg, &pkilen, berstring, &keyform,
kek, kea, buf, (int *) &datalen, &len, &errcode);
_libssh2_os400qc3_crypto_dtor(kekctx);
if(errcode.Bytes_Available)
return -1;
/* Get the algorithm OID and key data from SubjectPublicKeyInfo. */
if(getASN1Element(&subjpubkeyinfo, buf, buf + len) != buf + len ||
*subjpubkeyinfo.header != (ASN1_SEQ | ASN1_CONSTRUCTED))
return -1;
cp = getASN1Element(&algorithmid, subjpubkeyinfo.beg, subjpubkeyinfo.end);
if(!cp || *algorithmid.header != (ASN1_SEQ | ASN1_CONSTRUCTED))
return -1;
if(!getASN1Element(&algorithm, algorithmid.beg, algorithmid.end) ||
*algorithm.header != ASN1_OBJ_ID)
return -1;
if(getASN1Element(&subjpubkey, cp, subjpubkeyinfo.end) !=
subjpubkeyinfo.end || *subjpubkey.header != ASN1_BIT_STRING)
return -1;
/* Check for supported algorithm. */
for(i = 0; pka[i].oid; i++)
if(!oidcmp(&algorithm, pka[i].oid)) {
len = (*pka[i].sshpubkey)(session, &p->data, &algorithmid,
&subjpubkey, pka[i].method);
if(len < 0)
return -1;
p->length = len;
p->method = pka[i].method;
return 0;
}
return -1; /* Algorithm not supported. */
}
static int
pkcs1topkcs8(LIBSSH2_SESSION *session,
const unsigned char **data8, unsigned int *datalen8,
const unsigned char *data1, unsigned int datalen1)
{
asn1Element *prvk;
asn1Element *pkcs8;
unsigned char *data;
*data8 = NULL;
*datalen8 = 0;
if(datalen1 < 2)
return -1;
prvk = asn1_new_from_bytes(data1, datalen1);
if(!prvk)
return -1;
pkcs8 = rsaprivatekeyinfo(prvk);
asn1delete(prvk);
if(!prvk) {
asn1delete(pkcs8);
pkcs8 = NULL;
}
if(!pkcs8)
return -1;
data = (unsigned char *) LIBSSH2_ALLOC(session,
pkcs8->end - pkcs8->header);
if(!data) {
asn1delete(pkcs8);
return -1;
}
*data8 = data;
*datalen8 = pkcs8->end - pkcs8->header;
memcpy((char *) data, (char *) pkcs8->header, *datalen8);
asn1delete(pkcs8);
return 0;
}
static int
rsapkcs1privkey(LIBSSH2_SESSION *session,
const unsigned char *data, unsigned int datalen,
const unsigned char *passphrase, void *loadkeydata)
{
const unsigned char *data8;
unsigned int datalen8;
int ret;
if(pkcs1topkcs8(session, &data8, &datalen8, data, datalen))
return -1;
ret = rsapkcs8privkey(session, data8, datalen8, passphrase, loadkeydata);
LIBSSH2_FREE(session, (char *) data8);
return ret;
}
static int
rsapkcs1pubkey(LIBSSH2_SESSION *session,
const unsigned char *data, unsigned int datalen,
const unsigned char *passphrase, void *loadkeydata)
{
const unsigned char *data8;
unsigned int datalen8;
int ret;
if(pkcs1topkcs8(session, &data8, &datalen8, data, datalen))
return -1;
ret = rsapkcs8pubkey(session, data8, datalen8, passphrase, loadkeydata);
LIBSSH2_FREE(session, (char *) data8);
return ret;
}
static int
try_pem_load(LIBSSH2_SESSION *session, FILE *fp,
const unsigned char *passphrase,
const char *header, const char *trailer,
loadkeyproc proc, void *loadkeydata)
{
unsigned char *data = NULL;
unsigned int datalen = 0;
int c;
int ret;
fseek(fp, 0L, SEEK_SET);
for(;;) {
ret = _libssh2_pem_parse(session, header, trailer,
passphrase,
fp, &data, &datalen);
if(!ret) {
ret = (*proc)(session, data, datalen, passphrase, loadkeydata);
if(!ret)
return 0;
}
if(data) {
LIBSSH2_FREE(session, data);
data = NULL;
}
c = getc(fp);
if(c == EOF)
break;
ungetc(c, fp);
}
return -1;
}
static int
load_rsa_private_file(LIBSSH2_SESSION *session, const char *filename,
unsigned const char *passphrase,
loadkeyproc proc1, loadkeyproc proc8, void *loadkeydata)
{
FILE *fp = fopen(filename, fopenrmode);
unsigned char *data = NULL;
size_t datalen = 0;
int ret;
long filesize;
if(!fp)
return -1;
/* Try with "ENCRYPTED PRIVATE KEY" PEM armor.
--> PKCS#8 EncryptedPrivateKeyInfo */
ret = try_pem_load(session, fp, passphrase, beginencprivkeyhdr,
endencprivkeyhdr, proc8, loadkeydata);
/* Try with "PRIVATE KEY" PEM armor.
--> PKCS#8 PrivateKeyInfo or EncryptedPrivateKeyInfo */
if(ret)
ret = try_pem_load(session, fp, passphrase, beginprivkeyhdr,
endprivkeyhdr, proc8, loadkeydata);
/* Try with "RSA PRIVATE KEY" PEM armor.
--> PKCS#1 RSAPrivateKey */
if(ret)
ret = try_pem_load(session, fp, passphrase, beginrsaprivkeyhdr,
endrsaprivkeyhdr, proc1, loadkeydata);
fclose(fp);
if(ret) {
/* Try DER encoding. */
fp = fopen(filename, fopenrbmode);
fseek(fp, 0L, SEEK_END);
filesize = ftell(fp);
if(filesize <= 32768) { /* Limit to a reasonable size. */
datalen = filesize;
data = (unsigned char *) alloca(datalen);
if(data) {
fseek(fp, 0L, SEEK_SET);
fread(data, datalen, 1, fp);
/* Try as PKCS#8 DER data.
--> PKCS#8 PrivateKeyInfo or EncryptedPrivateKeyInfo */
ret = (*proc8)(session, data, datalen, passphrase,
loadkeydata);
/* Try as PKCS#1 DER data.
--> PKCS#1 RSAPrivateKey */
if(ret)
ret = (*proc1)(session, data, datalen, passphrase,
loadkeydata);
}
}
fclose(fp);
}
return ret;
}
int
_libssh2_rsa_new_private(libssh2_rsa_ctx **rsa, LIBSSH2_SESSION *session,
const char *filename, unsigned const char *passphrase)
{
libssh2_rsa_ctx *ctx = libssh2_init_crypto_ctx(NULL);
int ret;
Qc3_Format_ALGD0400_T algd;
Qus_EC_t errcode;
if(!ctx)
return -1;
ret = load_rsa_private_file(session, filename, passphrase,
rsapkcs1privkey, rsapkcs8privkey,
(void *) ctx);
if(!ret) {
/* Create the algorithm context. */
algd.Public_Key_Alg = Qc3_RSA;
algd.PKA_Block_Format = Qc3_PKCS1_01;
memset(algd.Reserved, 0, sizeof algd.Reserved);
algd.Signing_Hash_Alg = Qc3_SHA1;
set_EC_length(errcode, sizeof errcode);
Qc3CreateAlgorithmContext((char *) &algd, Qc3_Alg_Public_Key,
ctx->hash.Alg_Context_Token, &errcode);
if(errcode.Bytes_Available)
ret = -1;
}
if(ret) {
_libssh2_os400qc3_crypto_dtor(ctx);
ctx = NULL;
}
*rsa = ctx;
return ret;
}
int
_libssh2_pub_priv_keyfile(LIBSSH2_SESSION *session,
unsigned char **method, size_t *method_len,
unsigned char **pubkeydata, size_t *pubkeydata_len,
const char *privatekey, const char *passphrase)
{
loadpubkeydata p;
int ret;
*method = NULL;
*method_len = 0;
*pubkeydata = NULL;
*pubkeydata_len = 0;
ret = load_rsa_private_file(session, privatekey, passphrase,
rsapkcs1pubkey, rsapkcs8pubkey, (void *) &p);
if(!ret) {
*method_len = strlen(p.method);
*method = LIBSSH2_ALLOC(session, *method_len);
if(*method)
memcpy((char *) *method, p.method, *method_len);
else
ret = -1;
}
if(ret) {
if(*method)
LIBSSH2_FREE(session, *method);
if(p.data)
LIBSSH2_FREE(session, (void *) p.data);
*method = NULL;
*method_len = 0;
}
else {
*pubkeydata = (unsigned char *) p.data;
*pubkeydata_len = p.length;
}
return ret;
}
int
_libssh2_rsa_new_private_frommemory(libssh2_rsa_ctx **rsa,
LIBSSH2_SESSION *session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase)
{
libssh2_rsa_ctx *ctx = libssh2_init_crypto_ctx(NULL);
unsigned char *data = NULL;
unsigned int datalen = 0;
int ret;
Qc3_Format_ALGD0400_T algd;
Qus_EC_t errcode;
if(!ctx)
return -1;
/* Try with "ENCRYPTED PRIVATE KEY" PEM armor.
--> PKCS#8 EncryptedPrivateKeyInfo */
ret = _libssh2_pem_parse_memory(session,
beginencprivkeyhdr, endencprivkeyhdr,
filedata, filedata_len, &data, &datalen);
/* Try with "PRIVATE KEY" PEM armor.
--> PKCS#8 PrivateKeyInfo or EncryptedPrivateKeyInfo */
if(ret)
ret = _libssh2_pem_parse_memory(session,
beginprivkeyhdr, endprivkeyhdr,
filedata, filedata_len,
&data, &datalen);
if(!ret) {
/* Process PKCS#8. */
ret = rsapkcs8privkey(session,
data, datalen, passphrase, (void *) &ctx);
}
else {
/* Try with "RSA PRIVATE KEY" PEM armor.
--> PKCS#1 RSAPrivateKey */
ret = _libssh2_pem_parse_memory(session,
beginrsaprivkeyhdr, endrsaprivkeyhdr,
filedata, filedata_len,
&data, &datalen);
if(!ret)
ret = rsapkcs1privkey(session,
data, datalen, passphrase, (void *) &ctx);
}
if(ret) {
/* Try as PKCS#8 DER data.
--> PKCS#8 PrivateKeyInfo or EncryptedPrivateKeyInfo */
ret = rsapkcs8privkey(session, filedata, filedata_len,
passphrase, (void *) &ctx);
/* Try as PKCS#1 DER data.
--> PKCS#1 RSAPrivateKey */
if(ret)
ret = rsapkcs1privkey(session, filedata, filedata_len,
passphrase, (void *) &ctx);
}
if(data)
LIBSSH2_FREE(session, data);
if(!ret) {
/* Create the algorithm context. */
algd.Public_Key_Alg = Qc3_RSA;
algd.PKA_Block_Format = Qc3_PKCS1_01;
memset(algd.Reserved, 0, sizeof algd.Reserved);
algd.Signing_Hash_Alg = Qc3_SHA1;
set_EC_length(errcode, sizeof errcode);
Qc3CreateAlgorithmContext((char *) &algd, Qc3_Alg_Public_Key,
ctx->hash.Alg_Context_Token, &errcode);
if(errcode.Bytes_Available)
ret = -1;
}
if(ret) {
_libssh2_os400qc3_crypto_dtor(ctx);
ctx = NULL;
}
*rsa = ctx;
return ret;
}
int
_libssh2_pub_priv_keyfilememory(LIBSSH2_SESSION *session,
unsigned char **method, size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekeydata,
size_t privatekeydata_len,
const char *passphrase)
{
loadpubkeydata p;
unsigned char *data = NULL;
unsigned int datalen = 0;
const char *meth;
int ret;
*method = NULL;
*method_len = 0;
*pubkeydata = NULL;
*pubkeydata_len = 0;
/* Try with "ENCRYPTED PRIVATE KEY" PEM armor.
--> PKCS#8 EncryptedPrivateKeyInfo */
ret = _libssh2_pem_parse_memory(session,
beginencprivkeyhdr, endencprivkeyhdr,
privatekeydata, privatekeydata_len,
&data, &datalen);
/* Try with "PRIVATE KEY" PEM armor.
--> PKCS#8 PrivateKeyInfo or EncryptedPrivateKeyInfo */
if(ret)
ret = _libssh2_pem_parse_memory(session,
beginprivkeyhdr, endprivkeyhdr,
privatekeydata, privatekeydata_len,
&data, &datalen);
if(!ret) {
/* Process PKCS#8. */
ret = rsapkcs8pubkey(session,
data, datalen, passphrase, (void *) &p);
}
else {
/* Try with "RSA PRIVATE KEY" PEM armor.
--> PKCS#1 RSAPrivateKey */
ret = _libssh2_pem_parse_memory(session,
beginrsaprivkeyhdr, endrsaprivkeyhdr,
privatekeydata, privatekeydata_len,
&data, &datalen);
if(!ret)
ret = rsapkcs1pubkey(session,
data, datalen, passphrase, (void *) &p);
}
if(ret) {
/* Try as PKCS#8 DER data.
--> PKCS#8 PrivateKeyInfo or EncryptedPrivateKeyInfo */
ret = rsapkcs8pubkey(session, privatekeydata, privatekeydata_len,
passphrase, (void *) &p);
/* Try as PKCS#1 DER data.
--> PKCS#1 RSAPrivateKey */
if(ret)
ret = rsapkcs1pubkey(session, privatekeydata, privatekeydata_len,
passphrase, (void *) &p);
}
if(data)
LIBSSH2_FREE(session, data);
if(!ret) {
*method_len = strlen(p.method);
*method = LIBSSH2_ALLOC(session, *method_len);
if(*method)
memcpy((char *) *method, p.method, *method_len);
else
ret = -1;
}
if(ret) {
if(*method)
LIBSSH2_FREE(session, *method);
if(p.data)
LIBSSH2_FREE(session, (void *) p.data);
*method = NULL;
*method_len = 0;
}
else {
*pubkeydata = (unsigned char *) p.data;
*pubkeydata_len = p.length;
}
return ret;
}
int
_libssh2_rsa_sha1_verify(libssh2_rsa_ctx *rsa,
const unsigned char *sig, unsigned long sig_len,
const unsigned char *m, unsigned long m_len)
{
Qus_EC_t errcode;
int slen = sig_len;
int mlen = m_len;
set_EC_length(errcode, sizeof errcode);
Qc3VerifySignature((char *) sig, &slen, (char *) m, &mlen, Qc3_Data,
rsa->hash.Alg_Context_Token, Qc3_Alg_Token,
rsa->key.Key_Context_Token, Qc3_Key_Token, anycsp,
NULL, (char *) &errcode);
return errcode.Bytes_Available? -1: 0;
}
int
_libssh2_os400qc3_rsa_sha1_signv(LIBSSH2_SESSION *session,
unsigned char **signature,
size_t *signature_len,
int veccount,
const struct iovec vector[],
libssh2_rsa_ctx *ctx)
{
Qus_EC_t errcode;
int siglen;
unsigned char *sig;
char sigbuf[8192];
int sigbufsize = sizeof sigbuf;
ctx->hash.Final_Op_Flag = Qc3_Final;
set_EC_length(errcode, sizeof errcode);
Qc3CalculateSignature((char *) vector, &veccount, Qc3_Array,
(char *) &ctx->hash, Qc3_Alg_Token,
(char *) &ctx->key, Qc3_Key_Token,
anycsp, NULL, sigbuf, &sigbufsize, &siglen,
(char *) &errcode);
ctx->hash.Final_Op_Flag = Qc3_Continue;
if(errcode.Bytes_Available)
return -1;
sig = LIBSSH2_ALLOC(session, siglen);
if(!sig)
return -1;
memcpy((char *) sig, sigbuf, siglen);
*signature = sig;
*signature_len = siglen;
return 0;
}
#endif /* LIBSSH2_OS400QC3 */
/* vim: set expandtab ts=4 sw=4: */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/mac.h | #ifndef __LIBSSH2_MAC_H
#define __LIBSSH2_MAC_H
/* Copyright (C) 2009-2010 by Daniel Stenberg
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
*/
#include "libssh2_priv.h"
struct _LIBSSH2_MAC_METHOD
{
const char *name;
/* The length of a given MAC packet */
int mac_len;
/* integrity key length */
int key_len;
/* Message Authentication Code Hashing algo */
int (*init) (LIBSSH2_SESSION * session, unsigned char *key, int *free_key,
void **abstract);
int (*hash) (LIBSSH2_SESSION * session, unsigned char *buf,
uint32_t seqno, const unsigned char *packet,
uint32_t packet_len, const unsigned char *addtl,
uint32_t addtl_len, void **abstract);
int (*dtor) (LIBSSH2_SESSION * session, void **abstract);
};
typedef struct _LIBSSH2_MAC_METHOD LIBSSH2_MAC_METHOD;
const LIBSSH2_MAC_METHOD **_libssh2_mac_methods(void);
#endif /* __LIBSSH2_MAC_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/openssl.h | #ifndef __LIBSSH2_OPENSSL_H
#define __LIBSSH2_OPENSSL_H
/* Copyright (C) 2009, 2010 Simon Josefsson
* Copyright (C) 2006, 2007 The Written Word, Inc. All rights reserved.
*
* Author: Simon Josefsson
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include <openssl/opensslconf.h>
#include <openssl/sha.h>
#include <openssl/rsa.h>
#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
#endif
#ifndef OPENSSL_NO_DSA
#include <openssl/dsa.h>
#endif
#ifndef OPENSSL_NO_MD5
#include <openssl/md5.h>
#endif
#include <openssl/evp.h>
#include <openssl/hmac.h>
#include <openssl/bn.h>
#include <openssl/pem.h>
#include <openssl/rand.h>
#if OPENSSL_VERSION_NUMBER >= 0x10100000L && \
!defined(LIBRESSL_VERSION_NUMBER)
# define HAVE_OPAQUE_STRUCTS 1
#endif
#ifdef OPENSSL_NO_RSA
# define LIBSSH2_RSA 0
#else
# define LIBSSH2_RSA 1
#endif
#ifdef OPENSSL_NO_DSA
# define LIBSSH2_DSA 0
#else
# define LIBSSH2_DSA 1
#endif
#ifdef OPENSSL_NO_ECDSA
# define LIBSSH2_ECDSA 0
#else
# define LIBSSH2_ECDSA 1
#endif
#if OPENSSL_VERSION_NUMBER >= 0x10101000L && \
!defined(LIBRESSL_VERSION_NUMBER)
# define LIBSSH2_ED25519 1
#else
# define LIBSSH2_ED25519 0
#endif
#ifdef OPENSSL_NO_MD5
# define LIBSSH2_MD5 0
#else
# define LIBSSH2_MD5 1
#endif
#ifdef OPENSSL_NO_RIPEMD
# define LIBSSH2_HMAC_RIPEMD 0
#else
# define LIBSSH2_HMAC_RIPEMD 1
#endif
#define LIBSSH2_HMAC_SHA256 1
#define LIBSSH2_HMAC_SHA512 1
#if OPENSSL_VERSION_NUMBER >= 0x00907000L && !defined(OPENSSL_NO_AES)
# define LIBSSH2_AES_CTR 1
# define LIBSSH2_AES 1
#else
# define LIBSSH2_AES_CTR 0
# define LIBSSH2_AES 0
#endif
#ifdef OPENSSL_NO_BF
# define LIBSSH2_BLOWFISH 0
#else
# define LIBSSH2_BLOWFISH 1
#endif
#ifdef OPENSSL_NO_RC4
# define LIBSSH2_RC4 0
#else
# define LIBSSH2_RC4 1
#endif
#ifdef OPENSSL_NO_CAST
# define LIBSSH2_CAST 0
#else
# define LIBSSH2_CAST 1
#endif
#ifdef OPENSSL_NO_DES
# define LIBSSH2_3DES 0
#else
# define LIBSSH2_3DES 1
#endif
#define EC_MAX_POINT_LEN ((528 * 2 / 8) + 1)
#define _libssh2_random(buf, len) (RAND_bytes((buf), (len)) == 1 ? 0 : -1)
#define libssh2_prepare_iovec(vec, len) /* Empty. */
#ifdef HAVE_OPAQUE_STRUCTS
#define libssh2_sha1_ctx EVP_MD_CTX *
#else
#define libssh2_sha1_ctx EVP_MD_CTX
#endif
/* returns 0 in case of failure */
int _libssh2_sha1_init(libssh2_sha1_ctx *ctx);
#define libssh2_sha1_init(x) _libssh2_sha1_init(x)
#ifdef HAVE_OPAQUE_STRUCTS
#define libssh2_sha1_update(ctx, data, len) EVP_DigestUpdate(ctx, data, len)
#define libssh2_sha1_final(ctx, out) do { \
EVP_DigestFinal(ctx, out, NULL); \
EVP_MD_CTX_free(ctx); \
} while(0)
#else
#define libssh2_sha1_update(ctx, data, len) EVP_DigestUpdate(&(ctx), data, len)
#define libssh2_sha1_final(ctx, out) EVP_DigestFinal(&(ctx), out, NULL)
#endif
int _libssh2_sha1(const unsigned char *message, unsigned long len,
unsigned char *out);
#define libssh2_sha1(x,y,z) _libssh2_sha1(x,y,z)
#ifdef HAVE_OPAQUE_STRUCTS
#define libssh2_sha256_ctx EVP_MD_CTX *
#else
#define libssh2_sha256_ctx EVP_MD_CTX
#endif
/* returns 0 in case of failure */
int _libssh2_sha256_init(libssh2_sha256_ctx *ctx);
#define libssh2_sha256_init(x) _libssh2_sha256_init(x)
#ifdef HAVE_OPAQUE_STRUCTS
#define libssh2_sha256_update(ctx, data, len) EVP_DigestUpdate(ctx, data, len)
#define libssh2_sha256_final(ctx, out) do { \
EVP_DigestFinal(ctx, out, NULL); \
EVP_MD_CTX_free(ctx); \
} while(0)
#else
#define libssh2_sha256_update(ctx, data, len) \
EVP_DigestUpdate(&(ctx), data, len)
#define libssh2_sha256_final(ctx, out) EVP_DigestFinal(&(ctx), out, NULL)
#endif
int _libssh2_sha256(const unsigned char *message, unsigned long len,
unsigned char *out);
#define libssh2_sha256(x,y,z) _libssh2_sha256(x,y,z)
#ifdef HAVE_OPAQUE_STRUCTS
#define libssh2_sha384_ctx EVP_MD_CTX *
#else
#define libssh2_sha384_ctx EVP_MD_CTX
#endif
/* returns 0 in case of failure */
int _libssh2_sha384_init(libssh2_sha384_ctx *ctx);
#define libssh2_sha384_init(x) _libssh2_sha384_init(x)
#ifdef HAVE_OPAQUE_STRUCTS
#define libssh2_sha384_update(ctx, data, len) EVP_DigestUpdate(ctx, data, len)
#define libssh2_sha384_final(ctx, out) do { \
EVP_DigestFinal(ctx, out, NULL); \
EVP_MD_CTX_free(ctx); \
} while(0)
#else
#define libssh2_sha384_update(ctx, data, len) \
EVP_DigestUpdate(&(ctx), data, len)
#define libssh2_sha384_final(ctx, out) EVP_DigestFinal(&(ctx), out, NULL)
#endif
int _libssh2_sha384(const unsigned char *message, unsigned long len,
unsigned char *out);
#define libssh2_sha384(x,y,z) _libssh2_sha384(x,y,z)
#ifdef HAVE_OPAQUE_STRUCTS
#define libssh2_sha512_ctx EVP_MD_CTX *
#else
#define libssh2_sha512_ctx EVP_MD_CTX
#endif
/* returns 0 in case of failure */
int _libssh2_sha512_init(libssh2_sha512_ctx *ctx);
#define libssh2_sha512_init(x) _libssh2_sha512_init(x)
#ifdef HAVE_OPAQUE_STRUCTS
#define libssh2_sha512_update(ctx, data, len) EVP_DigestUpdate(ctx, data, len)
#define libssh2_sha512_final(ctx, out) do { \
EVP_DigestFinal(ctx, out, NULL); \
EVP_MD_CTX_free(ctx); \
} while(0)
#else
#define libssh2_sha512_update(ctx, data, len) \
EVP_DigestUpdate(&(ctx), data, len)
#define libssh2_sha512_final(ctx, out) EVP_DigestFinal(&(ctx), out, NULL)
#endif
int _libssh2_sha512(const unsigned char *message, unsigned long len,
unsigned char *out);
#define libssh2_sha512(x,y,z) _libssh2_sha512(x,y,z)
#ifdef HAVE_OPAQUE_STRUCTS
#define libssh2_md5_ctx EVP_MD_CTX *
#else
#define libssh2_md5_ctx EVP_MD_CTX
#endif
/* returns 0 in case of failure */
int _libssh2_md5_init(libssh2_md5_ctx *ctx);
#define libssh2_md5_init(x) _libssh2_md5_init(x)
#ifdef HAVE_OPAQUE_STRUCTS
#define libssh2_md5_update(ctx, data, len) EVP_DigestUpdate(ctx, data, len)
#define libssh2_md5_final(ctx, out) do { \
EVP_DigestFinal(ctx, out, NULL); \
EVP_MD_CTX_free(ctx); \
} while(0)
#else
#define libssh2_md5_update(ctx, data, len) EVP_DigestUpdate(&(ctx), data, len)
#define libssh2_md5_final(ctx, out) EVP_DigestFinal(&(ctx), out, NULL)
#endif
#ifdef HAVE_OPAQUE_STRUCTS
#define libssh2_hmac_ctx HMAC_CTX *
#define libssh2_hmac_ctx_init(ctx) ctx = HMAC_CTX_new()
#define libssh2_hmac_sha1_init(ctx, key, keylen) \
HMAC_Init_ex(*(ctx), key, keylen, EVP_sha1(), NULL)
#define libssh2_hmac_md5_init(ctx, key, keylen) \
HMAC_Init_ex(*(ctx), key, keylen, EVP_md5(), NULL)
#define libssh2_hmac_ripemd160_init(ctx, key, keylen) \
HMAC_Init_ex(*(ctx), key, keylen, EVP_ripemd160(), NULL)
#define libssh2_hmac_sha256_init(ctx, key, keylen) \
HMAC_Init_ex(*(ctx), key, keylen, EVP_sha256(), NULL)
#define libssh2_hmac_sha512_init(ctx, key, keylen) \
HMAC_Init_ex(*(ctx), key, keylen, EVP_sha512(), NULL)
#define libssh2_hmac_update(ctx, data, datalen) \
HMAC_Update(ctx, data, datalen)
#define libssh2_hmac_final(ctx, data) HMAC_Final(ctx, data, NULL)
#define libssh2_hmac_cleanup(ctx) HMAC_CTX_free(*(ctx))
#else
#define libssh2_hmac_ctx HMAC_CTX
#define libssh2_hmac_ctx_init(ctx) \
HMAC_CTX_init(&ctx)
#define libssh2_hmac_sha1_init(ctx, key, keylen) \
HMAC_Init_ex(ctx, key, keylen, EVP_sha1(), NULL)
#define libssh2_hmac_md5_init(ctx, key, keylen) \
HMAC_Init_ex(ctx, key, keylen, EVP_md5(), NULL)
#define libssh2_hmac_ripemd160_init(ctx, key, keylen) \
HMAC_Init_ex(ctx, key, keylen, EVP_ripemd160(), NULL)
#define libssh2_hmac_sha256_init(ctx, key, keylen) \
HMAC_Init_ex(ctx, key, keylen, EVP_sha256(), NULL)
#define libssh2_hmac_sha512_init(ctx, key, keylen) \
HMAC_Init_ex(ctx, key, keylen, EVP_sha512(), NULL)
#define libssh2_hmac_update(ctx, data, datalen) \
HMAC_Update(&(ctx), data, datalen)
#define libssh2_hmac_final(ctx, data) HMAC_Final(&(ctx), data, NULL)
#define libssh2_hmac_cleanup(ctx) HMAC_cleanup(ctx)
#endif
extern void _libssh2_openssl_crypto_init(void);
extern void _libssh2_openssl_crypto_exit(void);
#define libssh2_crypto_init() _libssh2_openssl_crypto_init()
#define libssh2_crypto_exit() _libssh2_openssl_crypto_exit()
#define libssh2_rsa_ctx RSA
#define _libssh2_rsa_free(rsactx) RSA_free(rsactx)
#define libssh2_dsa_ctx DSA
#define _libssh2_dsa_free(dsactx) DSA_free(dsactx)
#if LIBSSH2_ECDSA
#define libssh2_ecdsa_ctx EC_KEY
#define _libssh2_ecdsa_free(ecdsactx) EC_KEY_free(ecdsactx)
#define _libssh2_ec_key EC_KEY
typedef enum {
LIBSSH2_EC_CURVE_NISTP256 = NID_X9_62_prime256v1,
LIBSSH2_EC_CURVE_NISTP384 = NID_secp384r1,
LIBSSH2_EC_CURVE_NISTP521 = NID_secp521r1
}
libssh2_curve_type;
#else
#define _libssh2_ec_key void
#endif /* LIBSSH2_ECDSA */
#if LIBSSH2_ED25519
#define libssh2_ed25519_ctx EVP_PKEY
#define _libssh2_ed25519_free(ctx) EVP_PKEY_free(ctx)
#endif /* ED25519 */
#define _libssh2_cipher_type(name) const EVP_CIPHER *(*name)(void)
#ifdef HAVE_OPAQUE_STRUCTS
#define _libssh2_cipher_ctx EVP_CIPHER_CTX *
#else
#define _libssh2_cipher_ctx EVP_CIPHER_CTX
#endif
#define _libssh2_cipher_aes256 EVP_aes_256_cbc
#define _libssh2_cipher_aes192 EVP_aes_192_cbc
#define _libssh2_cipher_aes128 EVP_aes_128_cbc
#ifdef HAVE_EVP_AES_128_CTR
#define _libssh2_cipher_aes128ctr EVP_aes_128_ctr
#define _libssh2_cipher_aes192ctr EVP_aes_192_ctr
#define _libssh2_cipher_aes256ctr EVP_aes_256_ctr
#else
#define _libssh2_cipher_aes128ctr _libssh2_EVP_aes_128_ctr
#define _libssh2_cipher_aes192ctr _libssh2_EVP_aes_192_ctr
#define _libssh2_cipher_aes256ctr _libssh2_EVP_aes_256_ctr
#endif
#define _libssh2_cipher_blowfish EVP_bf_cbc
#define _libssh2_cipher_arcfour EVP_rc4
#define _libssh2_cipher_cast5 EVP_cast5_cbc
#define _libssh2_cipher_3des EVP_des_ede3_cbc
#ifdef HAVE_OPAQUE_STRUCTS
#define _libssh2_cipher_dtor(ctx) EVP_CIPHER_CTX_free(*(ctx))
#else
#define _libssh2_cipher_dtor(ctx) EVP_CIPHER_CTX_cleanup(ctx)
#endif
#define _libssh2_bn BIGNUM
#define _libssh2_bn_ctx BN_CTX
#define _libssh2_bn_ctx_new() BN_CTX_new()
#define _libssh2_bn_ctx_free(bnctx) BN_CTX_free(bnctx)
#define _libssh2_bn_init() BN_new()
#define _libssh2_bn_init_from_bin() _libssh2_bn_init()
#define _libssh2_bn_set_word(bn, val) BN_set_word(bn, val)
#define _libssh2_bn_from_bin(bn, len, val) BN_bin2bn(val, len, bn)
#define _libssh2_bn_to_bin(bn, val) BN_bn2bin(bn, val)
#define _libssh2_bn_bytes(bn) BN_num_bytes(bn)
#define _libssh2_bn_bits(bn) BN_num_bits(bn)
#define _libssh2_bn_free(bn) BN_clear_free(bn)
#define _libssh2_dh_ctx BIGNUM *
#define libssh2_dh_init(dhctx) _libssh2_dh_init(dhctx)
#define libssh2_dh_key_pair(dhctx, public, g, p, group_order, bnctx) \
_libssh2_dh_key_pair(dhctx, public, g, p, group_order, bnctx)
#define libssh2_dh_secret(dhctx, secret, f, p, bnctx) \
_libssh2_dh_secret(dhctx, secret, f, p, bnctx)
#define libssh2_dh_dtor(dhctx) _libssh2_dh_dtor(dhctx)
extern void _libssh2_dh_init(_libssh2_dh_ctx *dhctx);
extern int _libssh2_dh_key_pair(_libssh2_dh_ctx *dhctx, _libssh2_bn *public,
_libssh2_bn *g, _libssh2_bn *p,
int group_order,
_libssh2_bn_ctx *bnctx);
extern int _libssh2_dh_secret(_libssh2_dh_ctx *dhctx, _libssh2_bn *secret,
_libssh2_bn *f, _libssh2_bn *p,
_libssh2_bn_ctx *bnctx);
extern void _libssh2_dh_dtor(_libssh2_dh_ctx *dhctx);
const EVP_CIPHER *_libssh2_EVP_aes_128_ctr(void);
const EVP_CIPHER *_libssh2_EVP_aes_192_ctr(void);
const EVP_CIPHER *_libssh2_EVP_aes_256_ctr(void);
#endif /* __LIBSSH2_OPENSSL_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/packet.c | /* Copyright (c) 2004-2007, Sara Golemon <[email protected]>
* Copyright (c) 2005,2006 Mikhail Gusarov
* Copyright (c) 2009-2014 by Daniel Stenberg
* Copyright (c) 2010 Simon Josefsson
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include <errno.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif
/* Needed for struct iovec on some platforms */
#ifdef HAVE_SYS_UIO_H
#include <sys/uio.h>
#endif
#include <sys/types.h>
#include "transport.h"
#include "channel.h"
#include "packet.h"
/*
* libssh2_packet_queue_listener
*
* Queue a connection request for a listener
*/
static inline int
packet_queue_listener(LIBSSH2_SESSION * session, unsigned char *data,
unsigned long datalen,
packet_queue_listener_state_t *listen_state)
{
/*
* Look for a matching listener
*/
/* 17 = packet_type(1) + channel(4) + reason(4) + descr(4) + lang(4) */
unsigned long packet_len = 17 + (sizeof(FwdNotReq) - 1);
unsigned char *p;
LIBSSH2_LISTENER *listn = _libssh2_list_first(&session->listeners);
char failure_code = SSH_OPEN_ADMINISTRATIVELY_PROHIBITED;
int rc;
if(listen_state->state == libssh2_NB_state_idle) {
unsigned long offset = (sizeof("forwarded-tcpip") - 1) + 5;
size_t temp_len = 0;
struct string_buf buf;
buf.data = data;
buf.dataptr = buf.data;
buf.len = datalen;
if(datalen < offset) {
return _libssh2_error(session, LIBSSH2_ERROR_OUT_OF_BOUNDARY,
"Unexpected packet size");
}
buf.dataptr += offset;
if(_libssh2_get_u32(&buf, &(listen_state->sender_channel))) {
return _libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Data too short extracting channel");
}
if(_libssh2_get_u32(&buf, &(listen_state->initial_window_size))) {
return _libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Data too short extracting window size");
}
if(_libssh2_get_u32(&buf, &(listen_state->packet_size))) {
return _libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Data too short extracting packet");
}
if(_libssh2_get_string(&buf, &(listen_state->host), &temp_len)) {
return _libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Data too short extracting host");
}
listen_state->host_len = (uint32_t)temp_len;
if(_libssh2_get_u32(&buf, &(listen_state->port))) {
return _libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Data too short extracting port");
}
if(_libssh2_get_string(&buf, &(listen_state->shost), &temp_len)) {
return _libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Data too short extracting shost");
}
listen_state->shost_len = (uint32_t)temp_len;
if(_libssh2_get_u32(&buf, &(listen_state->sport))) {
return _libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Data too short extracting sport");
}
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Remote received connection from %s:%ld to %s:%ld",
listen_state->shost, listen_state->sport,
listen_state->host, listen_state->port);
listen_state->state = libssh2_NB_state_allocated;
}
if(listen_state->state != libssh2_NB_state_sent) {
while(listn) {
if((listn->port == (int) listen_state->port) &&
(strlen(listn->host) == listen_state->host_len) &&
(memcmp (listn->host, listen_state->host,
listen_state->host_len) == 0)) {
/* This is our listener */
LIBSSH2_CHANNEL *channel = NULL;
listen_state->channel = NULL;
if(listen_state->state == libssh2_NB_state_allocated) {
if(listn->queue_maxsize &&
(listn->queue_maxsize <= listn->queue_size)) {
/* Queue is full */
failure_code = SSH_OPEN_RESOURCE_SHORTAGE;
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Listener queue full, ignoring");
listen_state->state = libssh2_NB_state_sent;
break;
}
channel = LIBSSH2_CALLOC(session, sizeof(LIBSSH2_CHANNEL));
if(!channel) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate a channel for "
"new connection");
failure_code = SSH_OPEN_RESOURCE_SHORTAGE;
listen_state->state = libssh2_NB_state_sent;
break;
}
listen_state->channel = channel;
channel->session = session;
channel->channel_type_len = sizeof("forwarded-tcpip") - 1;
channel->channel_type = LIBSSH2_ALLOC(session,
channel->
channel_type_len +
1);
if(!channel->channel_type) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate a channel for new"
" connection");
LIBSSH2_FREE(session, channel);
failure_code = SSH_OPEN_RESOURCE_SHORTAGE;
listen_state->state = libssh2_NB_state_sent;
break;
}
memcpy(channel->channel_type, "forwarded-tcpip",
channel->channel_type_len + 1);
channel->remote.id = listen_state->sender_channel;
channel->remote.window_size_initial =
LIBSSH2_CHANNEL_WINDOW_DEFAULT;
channel->remote.window_size =
LIBSSH2_CHANNEL_WINDOW_DEFAULT;
channel->remote.packet_size =
LIBSSH2_CHANNEL_PACKET_DEFAULT;
channel->local.id = _libssh2_channel_nextid(session);
channel->local.window_size_initial =
listen_state->initial_window_size;
channel->local.window_size =
listen_state->initial_window_size;
channel->local.packet_size = listen_state->packet_size;
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Connection queued: channel %lu/%lu "
"win %lu/%lu packet %lu/%lu",
channel->local.id, channel->remote.id,
channel->local.window_size,
channel->remote.window_size,
channel->local.packet_size,
channel->remote.packet_size);
p = listen_state->packet;
*(p++) = SSH_MSG_CHANNEL_OPEN_CONFIRMATION;
_libssh2_store_u32(&p, channel->remote.id);
_libssh2_store_u32(&p, channel->local.id);
_libssh2_store_u32(&p,
channel->remote.window_size_initial);
_libssh2_store_u32(&p, channel->remote.packet_size);
listen_state->state = libssh2_NB_state_created;
}
if(listen_state->state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, listen_state->packet,
17, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
else if(rc) {
listen_state->state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Unable to send channel "
"open confirmation");
}
/* Link the channel into the end of the queue list */
if(listen_state->channel) {
_libssh2_list_add(&listn->queue,
&listen_state->channel->node);
listn->queue_size++;
}
listen_state->state = libssh2_NB_state_idle;
return 0;
}
}
listn = _libssh2_list_next(&listn->node);
}
listen_state->state = libssh2_NB_state_sent;
}
/* We're not listening to you */
p = listen_state->packet;
*(p++) = SSH_MSG_CHANNEL_OPEN_FAILURE;
_libssh2_store_u32(&p, listen_state->sender_channel);
_libssh2_store_u32(&p, failure_code);
_libssh2_store_str(&p, FwdNotReq, sizeof(FwdNotReq) - 1);
_libssh2_htonu32(p, 0);
rc = _libssh2_transport_send(session, listen_state->packet,
packet_len, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
listen_state->state = libssh2_NB_state_idle;
return _libssh2_error(session, rc, "Unable to send open failure");
}
listen_state->state = libssh2_NB_state_idle;
return 0;
}
/*
* packet_x11_open
*
* Accept a forwarded X11 connection
*/
static inline int
packet_x11_open(LIBSSH2_SESSION * session, unsigned char *data,
unsigned long datalen,
packet_x11_open_state_t *x11open_state)
{
int failure_code = SSH_OPEN_CONNECT_FAILED;
/* 17 = packet_type(1) + channel(4) + reason(4) + descr(4) + lang(4) */
unsigned long packet_len = 17 + (sizeof(X11FwdUnAvil) - 1);
unsigned char *p;
LIBSSH2_CHANNEL *channel = x11open_state->channel;
int rc;
if(x11open_state->state == libssh2_NB_state_idle) {
unsigned long offset = (sizeof("x11") - 1) + 5;
size_t temp_len = 0;
struct string_buf buf;
buf.data = data;
buf.dataptr = buf.data;
buf.len = datalen;
if(datalen < offset) {
_libssh2_error(session, LIBSSH2_ERROR_INVAL,
"unexpected data length");
failure_code = SSH_OPEN_CONNECT_FAILED;
goto x11_exit;
}
buf.dataptr += offset;
if(_libssh2_get_u32(&buf, &(x11open_state->sender_channel))) {
_libssh2_error(session, LIBSSH2_ERROR_INVAL,
"unexpected sender channel size");
failure_code = SSH_OPEN_CONNECT_FAILED;
goto x11_exit;
}
if(_libssh2_get_u32(&buf, &(x11open_state->initial_window_size))) {
_libssh2_error(session, LIBSSH2_ERROR_INVAL,
"unexpected window size");
failure_code = SSH_OPEN_CONNECT_FAILED;
goto x11_exit;
}
if(_libssh2_get_u32(&buf, &(x11open_state->packet_size))) {
_libssh2_error(session, LIBSSH2_ERROR_INVAL,
"unexpected window size");
failure_code = SSH_OPEN_CONNECT_FAILED;
goto x11_exit;
}
if(_libssh2_get_string(&buf, &(x11open_state->shost), &temp_len)) {
_libssh2_error(session, LIBSSH2_ERROR_INVAL,
"unexpected host size");
failure_code = SSH_OPEN_CONNECT_FAILED;
goto x11_exit;
}
x11open_state->shost_len = (uint32_t)temp_len;
if(_libssh2_get_u32(&buf, &(x11open_state->sport))) {
_libssh2_error(session, LIBSSH2_ERROR_INVAL,
"unexpected port size");
failure_code = SSH_OPEN_CONNECT_FAILED;
goto x11_exit;
}
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"X11 Connection Received from %s:%ld on channel %lu",
x11open_state->shost, x11open_state->sport,
x11open_state->sender_channel);
x11open_state->state = libssh2_NB_state_allocated;
}
if(session->x11) {
if(x11open_state->state == libssh2_NB_state_allocated) {
channel = LIBSSH2_CALLOC(session, sizeof(LIBSSH2_CHANNEL));
if(!channel) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"allocate a channel for new connection");
failure_code = SSH_OPEN_RESOURCE_SHORTAGE;
goto x11_exit;
}
channel->session = session;
channel->channel_type_len = sizeof("x11") - 1;
channel->channel_type = LIBSSH2_ALLOC(session,
channel->channel_type_len +
1);
if(!channel->channel_type) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"allocate a channel for new connection");
LIBSSH2_FREE(session, channel);
failure_code = SSH_OPEN_RESOURCE_SHORTAGE;
goto x11_exit;
}
memcpy(channel->channel_type, "x11",
channel->channel_type_len + 1);
channel->remote.id = x11open_state->sender_channel;
channel->remote.window_size_initial =
LIBSSH2_CHANNEL_WINDOW_DEFAULT;
channel->remote.window_size = LIBSSH2_CHANNEL_WINDOW_DEFAULT;
channel->remote.packet_size = LIBSSH2_CHANNEL_PACKET_DEFAULT;
channel->local.id = _libssh2_channel_nextid(session);
channel->local.window_size_initial =
x11open_state->initial_window_size;
channel->local.window_size = x11open_state->initial_window_size;
channel->local.packet_size = x11open_state->packet_size;
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"X11 Connection established: channel %lu/%lu "
"win %lu/%lu packet %lu/%lu",
channel->local.id, channel->remote.id,
channel->local.window_size,
channel->remote.window_size,
channel->local.packet_size,
channel->remote.packet_size);
p = x11open_state->packet;
*(p++) = SSH_MSG_CHANNEL_OPEN_CONFIRMATION;
_libssh2_store_u32(&p, channel->remote.id);
_libssh2_store_u32(&p, channel->local.id);
_libssh2_store_u32(&p, channel->remote.window_size_initial);
_libssh2_store_u32(&p, channel->remote.packet_size);
x11open_state->state = libssh2_NB_state_created;
}
if(x11open_state->state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, x11open_state->packet, 17,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
x11open_state->state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send channel open "
"confirmation");
}
/* Link the channel into the session */
_libssh2_list_add(&session->channels, &channel->node);
/*
* Pass control to the callback, they may turn right around and
* free the channel, or actually use it
*/
LIBSSH2_X11_OPEN(channel, (char *)x11open_state->shost,
x11open_state->sport);
x11open_state->state = libssh2_NB_state_idle;
return 0;
}
}
else
failure_code = SSH_OPEN_RESOURCE_SHORTAGE;
/* fall-trough */
x11_exit:
p = x11open_state->packet;
*(p++) = SSH_MSG_CHANNEL_OPEN_FAILURE;
_libssh2_store_u32(&p, x11open_state->sender_channel);
_libssh2_store_u32(&p, failure_code);
_libssh2_store_str(&p, X11FwdUnAvil, sizeof(X11FwdUnAvil) - 1);
_libssh2_htonu32(p, 0);
rc = _libssh2_transport_send(session, x11open_state->packet, packet_len,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
x11open_state->state = libssh2_NB_state_idle;
return _libssh2_error(session, rc, "Unable to send open failure");
}
x11open_state->state = libssh2_NB_state_idle;
return 0;
}
/*
* _libssh2_packet_add
*
* Create a new packet and attach it to the brigade. Called from the transport
* layer when it has received a packet.
*
* The input pointer 'data' is pointing to allocated data that this function
* is asked to deal with so on failure OR success, it must be freed fine.
* The only exception is when the return code is LIBSSH2_ERROR_EAGAIN.
*
* This function will always be called with 'datalen' greater than zero.
*/
int
_libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
size_t datalen, int macstate)
{
int rc = 0;
unsigned char *message = NULL;
unsigned char *language = NULL;
size_t message_len = 0;
size_t language_len = 0;
LIBSSH2_CHANNEL *channelp = NULL;
size_t data_head = 0;
unsigned char msg = data[0];
switch(session->packAdd_state) {
case libssh2_NB_state_idle:
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"Packet type %d received, length=%d",
(int) msg, (int) datalen);
if((macstate == LIBSSH2_MAC_INVALID) &&
(!session->macerror ||
LIBSSH2_MACERROR(session, (char *) data, datalen))) {
/* Bad MAC input, but no callback set or non-zero return from the
callback */
LIBSSH2_FREE(session, data);
return _libssh2_error(session, LIBSSH2_ERROR_INVALID_MAC,
"Invalid MAC received");
}
session->packAdd_state = libssh2_NB_state_allocated;
break;
case libssh2_NB_state_jump1:
goto libssh2_packet_add_jump_point1;
case libssh2_NB_state_jump2:
goto libssh2_packet_add_jump_point2;
case libssh2_NB_state_jump3:
goto libssh2_packet_add_jump_point3;
case libssh2_NB_state_jump4:
goto libssh2_packet_add_jump_point4;
case libssh2_NB_state_jump5:
goto libssh2_packet_add_jump_point5;
default: /* nothing to do */
break;
}
if(session->packAdd_state == libssh2_NB_state_allocated) {
/* A couple exceptions to the packet adding rule: */
switch(msg) {
/*
byte SSH_MSG_DISCONNECT
uint32 reason code
string description in ISO-10646 UTF-8 encoding [RFC3629]
string language tag [RFC3066]
*/
case SSH_MSG_DISCONNECT:
if(datalen >= 5) {
uint32_t reason = 0;
struct string_buf buf;
buf.data = (unsigned char *)data;
buf.dataptr = buf.data;
buf.len = datalen;
buf.dataptr++; /* advance past type */
_libssh2_get_u32(&buf, &reason);
_libssh2_get_string(&buf, &message, &message_len);
_libssh2_get_string(&buf, &language, &language_len);
if(session->ssh_msg_disconnect) {
LIBSSH2_DISCONNECT(session, reason, (const char *)message,
message_len, (const char *)language,
language_len);
}
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"Disconnect(%d): %s(%s)", reason,
message, language);
}
LIBSSH2_FREE(session, data);
session->socket_state = LIBSSH2_SOCKET_DISCONNECTED;
session->packAdd_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_DISCONNECT,
"socket disconnect");
/*
byte SSH_MSG_IGNORE
string data
*/
case SSH_MSG_IGNORE:
if(datalen >= 2) {
if(session->ssh_msg_ignore) {
LIBSSH2_IGNORE(session, (char *) data + 1, datalen - 1);
}
}
else if(session->ssh_msg_ignore) {
LIBSSH2_IGNORE(session, "", 0);
}
LIBSSH2_FREE(session, data);
session->packAdd_state = libssh2_NB_state_idle;
return 0;
/*
byte SSH_MSG_DEBUG
boolean always_display
string message in ISO-10646 UTF-8 encoding [RFC3629]
string language tag [RFC3066]
*/
case SSH_MSG_DEBUG:
if(datalen >= 2) {
int always_display = data[1];
if(datalen >= 6) {
struct string_buf buf;
buf.data = (unsigned char *)data;
buf.dataptr = buf.data;
buf.len = datalen;
buf.dataptr += 2; /* advance past type & always display */
_libssh2_get_string(&buf, &message, &message_len);
_libssh2_get_string(&buf, &language, &language_len);
}
if(session->ssh_msg_debug) {
LIBSSH2_DEBUG(session, always_display,
(const char *)message,
message_len, (const char *)language,
language_len);
}
}
/*
* _libssh2_debug will actually truncate this for us so
* that it's not an inordinate about of data
*/
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"Debug Packet: %s", message);
LIBSSH2_FREE(session, data);
session->packAdd_state = libssh2_NB_state_idle;
return 0;
/*
byte SSH_MSG_GLOBAL_REQUEST
string request name in US-ASCII only
boolean want reply
.... request-specific data follows
*/
case SSH_MSG_GLOBAL_REQUEST:
if(datalen >= 5) {
uint32_t len = 0;
unsigned char want_reply = 0;
len = _libssh2_ntohu32(data + 1);
if((len <= (UINT_MAX - 6)) && (datalen >= (6 + len))) {
want_reply = data[5 + len];
_libssh2_debug(session,
LIBSSH2_TRACE_CONN,
"Received global request type %.*s (wr %X)",
len, data + 5, want_reply);
}
if(want_reply) {
static const unsigned char packet =
SSH_MSG_REQUEST_FAILURE;
libssh2_packet_add_jump_point5:
session->packAdd_state = libssh2_NB_state_jump5;
rc = _libssh2_transport_send(session, &packet, 1, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
}
}
LIBSSH2_FREE(session, data);
session->packAdd_state = libssh2_NB_state_idle;
return 0;
/*
byte SSH_MSG_CHANNEL_EXTENDED_DATA
uint32 recipient channel
uint32 data_type_code
string data
*/
case SSH_MSG_CHANNEL_EXTENDED_DATA:
/* streamid(4) */
data_head += 4;
/* fall-through */
/*
byte SSH_MSG_CHANNEL_DATA
uint32 recipient channel
string data
*/
case SSH_MSG_CHANNEL_DATA:
/* packet_type(1) + channelno(4) + datalen(4) */
data_head += 9;
if(datalen >= data_head)
channelp =
_libssh2_channel_locate(session,
_libssh2_ntohu32(data + 1));
if(!channelp) {
_libssh2_error(session, LIBSSH2_ERROR_CHANNEL_UNKNOWN,
"Packet received for unknown channel");
LIBSSH2_FREE(session, data);
session->packAdd_state = libssh2_NB_state_idle;
return 0;
}
#ifdef LIBSSH2DEBUG
{
uint32_t stream_id = 0;
if(msg == SSH_MSG_CHANNEL_EXTENDED_DATA)
stream_id = _libssh2_ntohu32(data + 5);
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"%d bytes packet_add() for %lu/%lu/%lu",
(int) (datalen - data_head),
channelp->local.id,
channelp->remote.id,
stream_id);
}
#endif
if((channelp->remote.extended_data_ignore_mode ==
LIBSSH2_CHANNEL_EXTENDED_DATA_IGNORE) &&
(msg == SSH_MSG_CHANNEL_EXTENDED_DATA)) {
/* Pretend we didn't receive this */
LIBSSH2_FREE(session, data);
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Ignoring extended data and refunding %d bytes",
(int) (datalen - 13));
if(channelp->read_avail + datalen - data_head >=
channelp->remote.window_size)
datalen = channelp->remote.window_size -
channelp->read_avail + data_head;
channelp->remote.window_size -= datalen - data_head;
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"shrinking window size by %lu bytes to %lu, "
"read_avail %lu",
datalen - data_head,
channelp->remote.window_size,
channelp->read_avail);
session->packAdd_channelp = channelp;
/* Adjust the window based on the block we just freed */
libssh2_packet_add_jump_point1:
session->packAdd_state = libssh2_NB_state_jump1;
rc = _libssh2_channel_receive_window_adjust(session->
packAdd_channelp,
datalen - 13,
1, NULL);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
session->packAdd_state = libssh2_NB_state_idle;
return 0;
}
/*
* REMEMBER! remote means remote as source of data,
* NOT remote window!
*/
if(channelp->remote.packet_size < (datalen - data_head)) {
/*
* Spec says we MAY ignore bytes sent beyond
* packet_size
*/
_libssh2_error(session,
LIBSSH2_ERROR_CHANNEL_PACKET_EXCEEDED,
"Packet contains more data than we offered"
" to receive, truncating");
datalen = channelp->remote.packet_size + data_head;
}
if(channelp->remote.window_size <= channelp->read_avail) {
/*
* Spec says we MAY ignore bytes sent beyond
* window_size
*/
_libssh2_error(session,
LIBSSH2_ERROR_CHANNEL_WINDOW_EXCEEDED,
"The current receive window is full,"
" data ignored");
LIBSSH2_FREE(session, data);
session->packAdd_state = libssh2_NB_state_idle;
return 0;
}
/* Reset EOF status */
channelp->remote.eof = 0;
if(channelp->read_avail + datalen - data_head >
channelp->remote.window_size) {
_libssh2_error(session,
LIBSSH2_ERROR_CHANNEL_WINDOW_EXCEEDED,
"Remote sent more data than current "
"window allows, truncating");
datalen = channelp->remote.window_size -
channelp->read_avail + data_head;
}
/* Update the read_avail counter. The window size will be
* updated once the data is actually read from the queue
* from an upper layer */
channelp->read_avail += datalen - data_head;
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"increasing read_avail by %lu bytes to %lu/%lu",
(long)(datalen - data_head),
(long)channelp->read_avail,
(long)channelp->remote.window_size);
break;
/*
byte SSH_MSG_CHANNEL_EOF
uint32 recipient channel
*/
case SSH_MSG_CHANNEL_EOF:
if(datalen >= 5)
channelp =
_libssh2_channel_locate(session,
_libssh2_ntohu32(data + 1));
if(!channelp)
/* We may have freed already, just quietly ignore this... */
;
else {
_libssh2_debug(session,
LIBSSH2_TRACE_CONN,
"EOF received for channel %lu/%lu",
channelp->local.id,
channelp->remote.id);
channelp->remote.eof = 1;
}
LIBSSH2_FREE(session, data);
session->packAdd_state = libssh2_NB_state_idle;
return 0;
/*
byte SSH_MSG_CHANNEL_REQUEST
uint32 recipient channel
string request type in US-ASCII characters only
boolean want reply
.... type-specific data follows
*/
case SSH_MSG_CHANNEL_REQUEST:
if(datalen >= 9) {
uint32_t channel = _libssh2_ntohu32(data + 1);
uint32_t len = _libssh2_ntohu32(data + 5);
unsigned char want_reply = 1;
if((len + 9) < datalen)
want_reply = data[len + 9];
_libssh2_debug(session,
LIBSSH2_TRACE_CONN,
"Channel %d received request type %.*s (wr %X)",
channel, len, data + 9, want_reply);
if(len == sizeof("exit-status") - 1
&& (sizeof("exit-status") - 1 + 9) <= datalen
&& !memcmp("exit-status", data + 9,
sizeof("exit-status") - 1)) {
/* we've got "exit-status" packet. Set the session value */
if(datalen >= 20)
channelp =
_libssh2_channel_locate(session, channel);
if(channelp && (sizeof("exit-status") + 13) <= datalen) {
channelp->exit_status =
_libssh2_ntohu32(data + 9 + sizeof("exit-status"));
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Exit status %lu received for "
"channel %lu/%lu",
channelp->exit_status,
channelp->local.id,
channelp->remote.id);
}
}
else if(len == sizeof("exit-signal") - 1
&& (sizeof("exit-signal") - 1 + 9) <= datalen
&& !memcmp("exit-signal", data + 9,
sizeof("exit-signal") - 1)) {
/* command terminated due to signal */
if(datalen >= 20)
channelp = _libssh2_channel_locate(session, channel);
if(channelp && (sizeof("exit-signal") + 13) <= datalen) {
/* set signal name (without SIG prefix) */
uint32_t namelen =
_libssh2_ntohu32(data + 9 + sizeof("exit-signal"));
if(namelen <= UINT_MAX - 1) {
channelp->exit_signal =
LIBSSH2_ALLOC(session, namelen + 1);
}
else {
channelp->exit_signal = NULL;
}
if(!channelp->exit_signal)
rc = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"memory for signal name");
else if((sizeof("exit-signal") + 13 + namelen <=
datalen)) {
memcpy(channelp->exit_signal,
data + 13 + sizeof("exit-signal"), namelen);
channelp->exit_signal[namelen] = '\0';
/* TODO: save error message and language tag */
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Exit signal %s received for "
"channel %lu/%lu",
channelp->exit_signal,
channelp->local.id,
channelp->remote.id);
}
}
}
if(want_reply) {
unsigned char packet[5];
libssh2_packet_add_jump_point4:
session->packAdd_state = libssh2_NB_state_jump4;
packet[0] = SSH_MSG_CHANNEL_FAILURE;
memcpy(&packet[1], data + 1, 4);
rc = _libssh2_transport_send(session, packet, 5, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
}
}
LIBSSH2_FREE(session, data);
session->packAdd_state = libssh2_NB_state_idle;
return rc;
/*
byte SSH_MSG_CHANNEL_CLOSE
uint32 recipient channel
*/
case SSH_MSG_CHANNEL_CLOSE:
if(datalen >= 5)
channelp =
_libssh2_channel_locate(session,
_libssh2_ntohu32(data + 1));
if(!channelp) {
/* We may have freed already, just quietly ignore this... */
LIBSSH2_FREE(session, data);
session->packAdd_state = libssh2_NB_state_idle;
return 0;
}
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Close received for channel %lu/%lu",
channelp->local.id,
channelp->remote.id);
channelp->remote.close = 1;
channelp->remote.eof = 1;
LIBSSH2_FREE(session, data);
session->packAdd_state = libssh2_NB_state_idle;
return 0;
/*
byte SSH_MSG_CHANNEL_OPEN
string "session"
uint32 sender channel
uint32 initial window size
uint32 maximum packet size
*/
case SSH_MSG_CHANNEL_OPEN:
if(datalen < 17)
;
else if((datalen >= (sizeof("forwarded-tcpip") + 4)) &&
((sizeof("forwarded-tcpip") - 1) ==
_libssh2_ntohu32(data + 1))
&&
(memcmp(data + 5, "forwarded-tcpip",
sizeof("forwarded-tcpip") - 1) == 0)) {
/* init the state struct */
memset(&session->packAdd_Qlstn_state, 0,
sizeof(session->packAdd_Qlstn_state));
libssh2_packet_add_jump_point2:
session->packAdd_state = libssh2_NB_state_jump2;
rc = packet_queue_listener(session, data, datalen,
&session->packAdd_Qlstn_state);
}
else if((datalen >= (sizeof("x11") + 4)) &&
((sizeof("x11") - 1) == _libssh2_ntohu32(data + 1)) &&
(memcmp(data + 5, "x11", sizeof("x11") - 1) == 0)) {
/* init the state struct */
memset(&session->packAdd_x11open_state, 0,
sizeof(session->packAdd_x11open_state));
libssh2_packet_add_jump_point3:
session->packAdd_state = libssh2_NB_state_jump3;
rc = packet_x11_open(session, data, datalen,
&session->packAdd_x11open_state);
}
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
LIBSSH2_FREE(session, data);
session->packAdd_state = libssh2_NB_state_idle;
return rc;
/*
byte SSH_MSG_CHANNEL_WINDOW_ADJUST
uint32 recipient channel
uint32 bytes to add
*/
case SSH_MSG_CHANNEL_WINDOW_ADJUST:
if(datalen < 9)
;
else {
uint32_t bytestoadd = _libssh2_ntohu32(data + 5);
channelp =
_libssh2_channel_locate(session,
_libssh2_ntohu32(data + 1));
if(channelp) {
channelp->local.window_size += bytestoadd;
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Window adjust for channel %lu/%lu, "
"adding %lu bytes, new window_size=%lu",
channelp->local.id,
channelp->remote.id,
bytestoadd,
channelp->local.window_size);
}
}
LIBSSH2_FREE(session, data);
session->packAdd_state = libssh2_NB_state_idle;
return 0;
default:
break;
}
session->packAdd_state = libssh2_NB_state_sent;
}
if(session->packAdd_state == libssh2_NB_state_sent) {
LIBSSH2_PACKET *packetp =
LIBSSH2_ALLOC(session, sizeof(LIBSSH2_PACKET));
if(!packetp) {
_libssh2_debug(session, LIBSSH2_ERROR_ALLOC,
"memory for packet");
LIBSSH2_FREE(session, data);
session->packAdd_state = libssh2_NB_state_idle;
return LIBSSH2_ERROR_ALLOC;
}
packetp->data = data;
packetp->data_len = datalen;
packetp->data_head = data_head;
_libssh2_list_add(&session->packets, &packetp->node);
session->packAdd_state = libssh2_NB_state_sent1;
}
if((msg == SSH_MSG_KEXINIT &&
!(session->state & LIBSSH2_STATE_EXCHANGING_KEYS)) ||
(session->packAdd_state == libssh2_NB_state_sent2)) {
if(session->packAdd_state == libssh2_NB_state_sent1) {
/*
* Remote wants new keys
* Well, it's already in the brigade,
* let's just call back into ourselves
*/
_libssh2_debug(session, LIBSSH2_TRACE_TRANS, "Renegotiating Keys");
session->packAdd_state = libssh2_NB_state_sent2;
}
/*
* The KEXINIT message has been added to the queue. The packAdd and
* readPack states need to be reset because _libssh2_kex_exchange
* (eventually) calls upon _libssh2_transport_read to read the rest of
* the key exchange conversation.
*/
session->readPack_state = libssh2_NB_state_idle;
session->packet.total_num = 0;
session->packAdd_state = libssh2_NB_state_idle;
session->fullpacket_state = libssh2_NB_state_idle;
memset(&session->startup_key_state, 0, sizeof(key_exchange_state_t));
/*
* If there was a key reexchange failure, let's just hope we didn't
* send NEWKEYS yet, otherwise remote will drop us like a rock
*/
rc = _libssh2_kex_exchange(session, 1, &session->startup_key_state);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
}
session->packAdd_state = libssh2_NB_state_idle;
return 0;
}
/*
* _libssh2_packet_ask
*
* Scan the brigade for a matching packet type, optionally poll the socket for
* a packet first
*/
int
_libssh2_packet_ask(LIBSSH2_SESSION * session, unsigned char packet_type,
unsigned char **data, size_t *data_len,
int match_ofs, const unsigned char *match_buf,
size_t match_len)
{
LIBSSH2_PACKET *packet = _libssh2_list_first(&session->packets);
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"Looking for packet of type: %d", (int) packet_type);
while(packet) {
if(packet->data[0] == packet_type
&& (packet->data_len >= (match_ofs + match_len))
&& (!match_buf ||
(memcmp(packet->data + match_ofs, match_buf,
match_len) == 0))) {
*data = packet->data;
*data_len = packet->data_len;
/* unlink struct from session->packets */
_libssh2_list_remove(&packet->node);
LIBSSH2_FREE(session, packet);
return 0;
}
packet = _libssh2_list_next(&packet->node);
}
return -1;
}
/*
* libssh2_packet_askv
*
* Scan for any of a list of packet types in the brigade, optionally poll the
* socket for a packet first
*/
int
_libssh2_packet_askv(LIBSSH2_SESSION * session,
const unsigned char *packet_types,
unsigned char **data, size_t *data_len,
int match_ofs,
const unsigned char *match_buf,
size_t match_len)
{
int i, packet_types_len = strlen((char *) packet_types);
for(i = 0; i < packet_types_len; i++) {
if(0 == _libssh2_packet_ask(session, packet_types[i], data,
data_len, match_ofs,
match_buf, match_len)) {
return 0;
}
}
return -1;
}
/*
* _libssh2_packet_require
*
* Loops _libssh2_transport_read() until the packet requested is available
* SSH_DISCONNECT or a SOCKET_DISCONNECTED will cause a bailout
*
* Returns negative on error
* Returns 0 when it has taken care of the requested packet.
*/
int
_libssh2_packet_require(LIBSSH2_SESSION * session, unsigned char packet_type,
unsigned char **data, size_t *data_len,
int match_ofs,
const unsigned char *match_buf,
size_t match_len,
packet_require_state_t *state)
{
if(state->start == 0) {
if(_libssh2_packet_ask(session, packet_type, data, data_len,
match_ofs, match_buf,
match_len) == 0) {
/* A packet was available in the packet brigade */
return 0;
}
state->start = time(NULL);
}
while(session->socket_state == LIBSSH2_SOCKET_CONNECTED) {
int ret = _libssh2_transport_read(session);
if(ret == LIBSSH2_ERROR_EAGAIN)
return ret;
else if(ret < 0) {
state->start = 0;
/* an error which is not just because of blocking */
return ret;
}
else if(ret == packet_type) {
/* Be lazy, let packet_ask pull it out of the brigade */
ret = _libssh2_packet_ask(session, packet_type, data, data_len,
match_ofs, match_buf, match_len);
state->start = 0;
return ret;
}
else if(ret == 0) {
/* nothing available, wait until data arrives or we time out */
long left = LIBSSH2_READ_TIMEOUT - (long)(time(NULL) -
state->start);
if(left <= 0) {
state->start = 0;
return LIBSSH2_ERROR_TIMEOUT;
}
return -1; /* no packet available yet */
}
}
/* Only reached if the socket died */
return LIBSSH2_ERROR_SOCKET_DISCONNECT;
}
/*
* _libssh2_packet_burn
*
* Loops _libssh2_transport_read() until any packet is available and promptly
* discards it.
* Used during KEX exchange to discard badly guessed KEX_INIT packets
*/
int
_libssh2_packet_burn(LIBSSH2_SESSION * session,
libssh2_nonblocking_states * state)
{
unsigned char *data;
size_t data_len;
unsigned char i, all_packets[255];
int ret;
if(*state == libssh2_NB_state_idle) {
for(i = 1; i < 255; i++) {
all_packets[i - 1] = i;
}
all_packets[254] = 0;
if(_libssh2_packet_askv(session, all_packets, &data, &data_len, 0,
NULL, 0) == 0) {
i = data[0];
/* A packet was available in the packet brigade, burn it */
LIBSSH2_FREE(session, data);
return i;
}
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"Blocking until packet becomes available to burn");
*state = libssh2_NB_state_created;
}
while(session->socket_state == LIBSSH2_SOCKET_CONNECTED) {
ret = _libssh2_transport_read(session);
if(ret == LIBSSH2_ERROR_EAGAIN) {
return ret;
}
else if(ret < 0) {
*state = libssh2_NB_state_idle;
return ret;
}
else if(ret == 0) {
/* FIXME: this might busyloop */
continue;
}
/* Be lazy, let packet_ask pull it out of the brigade */
if(0 ==
_libssh2_packet_ask(session, (unsigned char)ret,
&data, &data_len, 0, NULL, 0)) {
/* Smoke 'em if you got 'em */
LIBSSH2_FREE(session, data);
*state = libssh2_NB_state_idle;
return ret;
}
}
/* Only reached if the socket died */
return LIBSSH2_ERROR_SOCKET_DISCONNECT;
}
/*
* _libssh2_packet_requirev
*
* Loops _libssh2_transport_read() until one of a list of packet types
* requested is available. SSH_DISCONNECT or a SOCKET_DISCONNECTED will cause
* a bailout. packet_types is a null terminated list of packet_type numbers
*/
int
_libssh2_packet_requirev(LIBSSH2_SESSION *session,
const unsigned char *packet_types,
unsigned char **data, size_t *data_len,
int match_ofs,
const unsigned char *match_buf, size_t match_len,
packet_requirev_state_t * state)
{
if(_libssh2_packet_askv(session, packet_types, data, data_len, match_ofs,
match_buf, match_len) == 0) {
/* One of the packets listed was available in the packet brigade */
state->start = 0;
return 0;
}
if(state->start == 0) {
state->start = time(NULL);
}
while(session->socket_state != LIBSSH2_SOCKET_DISCONNECTED) {
int ret = _libssh2_transport_read(session);
if((ret < 0) && (ret != LIBSSH2_ERROR_EAGAIN)) {
state->start = 0;
return ret;
}
if(ret <= 0) {
long left = LIBSSH2_READ_TIMEOUT -
(long)(time(NULL) - state->start);
if(left <= 0) {
state->start = 0;
return LIBSSH2_ERROR_TIMEOUT;
}
else if(ret == LIBSSH2_ERROR_EAGAIN) {
return ret;
}
}
if(strchr((char *) packet_types, ret)) {
/* Be lazy, let packet_ask pull it out of the brigade */
int ret = _libssh2_packet_askv(session, packet_types, data,
data_len, match_ofs, match_buf,
match_len);
state->start = 0;
return ret;
}
}
/* Only reached if the socket died */
state->start = 0;
return LIBSSH2_ERROR_SOCKET_DISCONNECT;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/session.h | #ifndef __LIBSSH2_SESSION_H
#define __LIBSSH2_SESSION_H
/* Copyright (c) 2004-2007 Sara Golemon <[email protected]>
* Copyright (c) 2009-2010 by Daniel Stenberg
* Copyright (c) 2010 Simon Josefsson <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
/* Conveniance-macros to allow code like this;
int rc = BLOCK_ADJUST(rc, session, session_startup(session, sock) );
int rc = BLOCK_ADJUST_ERRNO(ptr, session, session_startup(session, sock) );
The point of course being to make sure that while in non-blocking mode
these always return no matter what the return code is, but in blocking mode
it blocks if EAGAIN is the reason for the return from the underlying
function.
*/
#define BLOCK_ADJUST(rc, sess, x) \
do { \
time_t entry_time = time(NULL); \
do { \
rc = x; \
/* the order of the check below is important to properly deal with \
the case when the 'sess' is freed */ \
if((rc != LIBSSH2_ERROR_EAGAIN) || !sess->api_block_mode) \
break; \
rc = _libssh2_wait_socket(sess, entry_time); \
} while(!rc); \
} while(0)
/*
* For functions that returns a pointer, we need to check if the API is
* non-blocking and return immediately. If the pointer is non-NULL we return
* immediately. If the API is blocking and we get a NULL we check the errno
* and *only* if that is EAGAIN we loop and wait for socket action.
*/
#define BLOCK_ADJUST_ERRNO(ptr, sess, x) \
do { \
time_t entry_time = time(NULL); \
int rc; \
do { \
ptr = x; \
if(!sess->api_block_mode || \
(ptr != NULL) || \
(libssh2_session_last_errno(sess) != LIBSSH2_ERROR_EAGAIN) ) \
break; \
rc = _libssh2_wait_socket(sess, entry_time); \
} while(!rc); \
} while(0)
int _libssh2_wait_socket(LIBSSH2_SESSION *session, time_t entry_time);
/* this is the lib-internal set blocking function */
int _libssh2_session_set_blocking(LIBSSH2_SESSION * session, int blocking);
#endif /* __LIBSSH2_SESSION_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/channel.c | /* Copyright (c) 2004-2007 Sara Golemon <[email protected]>
* Copyright (c) 2005 Mikhail Gusarov <[email protected]>
* Copyright (c) 2008-2019 by Daniel Stenberg
*
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <fcntl.h>
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#include <assert.h>
#include "channel.h"
#include "transport.h"
#include "packet.h"
#include "session.h"
/*
* _libssh2_channel_nextid
*
* Determine the next channel ID we can use at our end
*/
uint32_t
_libssh2_channel_nextid(LIBSSH2_SESSION * session)
{
uint32_t id = session->next_channel;
LIBSSH2_CHANNEL *channel;
channel = _libssh2_list_first(&session->channels);
while(channel) {
if(channel->local.id > id) {
id = channel->local.id;
}
channel = _libssh2_list_next(&channel->node);
}
/* This is a shortcut to avoid waiting for close packets on channels we've
* forgotten about, This *could* be a problem if we request and close 4
* billion or so channels in too rapid succession for the remote end to
* respond, but the worst case scenario is that some data meant for
* another channel Gets picked up by the new one.... Pretty unlikely all
* told...
*/
session->next_channel = id + 1;
_libssh2_debug(session, LIBSSH2_TRACE_CONN, "Allocated new channel ID#%lu",
id);
return id;
}
/*
* _libssh2_channel_locate
*
* Locate a channel pointer by number
*/
LIBSSH2_CHANNEL *
_libssh2_channel_locate(LIBSSH2_SESSION *session, uint32_t channel_id)
{
LIBSSH2_CHANNEL *channel;
LIBSSH2_LISTENER *l;
for(channel = _libssh2_list_first(&session->channels);
channel;
channel = _libssh2_list_next(&channel->node)) {
if(channel->local.id == channel_id)
return channel;
}
/* We didn't find the channel in the session, let's then check its
listeners since each listener may have its own set of pending channels
*/
for(l = _libssh2_list_first(&session->listeners); l;
l = _libssh2_list_next(&l->node)) {
for(channel = _libssh2_list_first(&l->queue);
channel;
channel = _libssh2_list_next(&channel->node)) {
if(channel->local.id == channel_id)
return channel;
}
}
return NULL;
}
/*
* _libssh2_channel_open
*
* Establish a generic session channel
*/
LIBSSH2_CHANNEL *
_libssh2_channel_open(LIBSSH2_SESSION * session, const char *channel_type,
uint32_t channel_type_len,
uint32_t window_size,
uint32_t packet_size,
const unsigned char *message,
size_t message_len)
{
static const unsigned char reply_codes[3] = {
SSH_MSG_CHANNEL_OPEN_CONFIRMATION,
SSH_MSG_CHANNEL_OPEN_FAILURE,
0
};
unsigned char *s;
int rc;
if(session->open_state == libssh2_NB_state_idle) {
session->open_channel = NULL;
session->open_packet = NULL;
session->open_data = NULL;
/* 17 = packet_type(1) + channel_type_len(4) + sender_channel(4) +
* window_size(4) + packet_size(4) */
session->open_packet_len = channel_type_len + 17;
session->open_local_channel = _libssh2_channel_nextid(session);
/* Zero the whole thing out */
memset(&session->open_packet_requirev_state, 0,
sizeof(session->open_packet_requirev_state));
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Opening Channel - win %d pack %d", window_size,
packet_size);
session->open_channel =
LIBSSH2_CALLOC(session, sizeof(LIBSSH2_CHANNEL));
if(!session->open_channel) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate space for channel data");
return NULL;
}
session->open_channel->channel_type_len = channel_type_len;
session->open_channel->channel_type =
LIBSSH2_ALLOC(session, channel_type_len);
if(!session->open_channel->channel_type) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Failed allocating memory for channel type name");
LIBSSH2_FREE(session, session->open_channel);
session->open_channel = NULL;
return NULL;
}
memcpy(session->open_channel->channel_type, channel_type,
channel_type_len);
/* REMEMBER: local as in locally sourced */
session->open_channel->local.id = session->open_local_channel;
session->open_channel->remote.window_size = window_size;
session->open_channel->remote.window_size_initial = window_size;
session->open_channel->remote.packet_size = packet_size;
session->open_channel->session = session;
_libssh2_list_add(&session->channels,
&session->open_channel->node);
s = session->open_packet =
LIBSSH2_ALLOC(session, session->open_packet_len);
if(!session->open_packet) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate temporary space for packet");
goto channel_error;
}
*(s++) = SSH_MSG_CHANNEL_OPEN;
_libssh2_store_str(&s, channel_type, channel_type_len);
_libssh2_store_u32(&s, session->open_local_channel);
_libssh2_store_u32(&s, window_size);
_libssh2_store_u32(&s, packet_size);
/* Do not copy the message */
session->open_state = libssh2_NB_state_created;
}
if(session->open_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session,
session->open_packet,
session->open_packet_len,
message, message_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, rc,
"Would block sending channel-open request");
return NULL;
}
else if(rc) {
_libssh2_error(session, rc,
"Unable to send channel-open request");
goto channel_error;
}
session->open_state = libssh2_NB_state_sent;
}
if(session->open_state == libssh2_NB_state_sent) {
rc = _libssh2_packet_requirev(session, reply_codes,
&session->open_data,
&session->open_data_len, 1,
session->open_packet + 5 +
channel_type_len, 4,
&session->open_packet_requirev_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN, "Would block");
return NULL;
}
else if(rc) {
_libssh2_error(session, rc, "Unexpected error");
goto channel_error;
}
if(session->open_data_len < 1) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected packet size");
goto channel_error;
}
if(session->open_data[0] == SSH_MSG_CHANNEL_OPEN_CONFIRMATION) {
if(session->open_data_len < 17) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected packet size");
goto channel_error;
}
session->open_channel->remote.id =
_libssh2_ntohu32(session->open_data + 5);
session->open_channel->local.window_size =
_libssh2_ntohu32(session->open_data + 9);
session->open_channel->local.window_size_initial =
_libssh2_ntohu32(session->open_data + 9);
session->open_channel->local.packet_size =
_libssh2_ntohu32(session->open_data + 13);
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Connection Established - ID: %lu/%lu win: %lu/%lu"
" pack: %lu/%lu",
session->open_channel->local.id,
session->open_channel->remote.id,
session->open_channel->local.window_size,
session->open_channel->remote.window_size,
session->open_channel->local.packet_size,
session->open_channel->remote.packet_size);
LIBSSH2_FREE(session, session->open_packet);
session->open_packet = NULL;
LIBSSH2_FREE(session, session->open_data);
session->open_data = NULL;
session->open_state = libssh2_NB_state_idle;
return session->open_channel;
}
if(session->open_data[0] == SSH_MSG_CHANNEL_OPEN_FAILURE) {
unsigned int reason_code =
_libssh2_ntohu32(session->open_data + 5);
switch(reason_code) {
case SSH_OPEN_ADMINISTRATIVELY_PROHIBITED:
_libssh2_error(session, LIBSSH2_ERROR_CHANNEL_FAILURE,
"Channel open failure "
"(administratively prohibited)");
break;
case SSH_OPEN_CONNECT_FAILED:
_libssh2_error(session, LIBSSH2_ERROR_CHANNEL_FAILURE,
"Channel open failure (connect failed)");
break;
case SSH_OPEN_UNKNOWN_CHANNELTYPE:
_libssh2_error(session, LIBSSH2_ERROR_CHANNEL_FAILURE,
"Channel open failure (unknown channel type)");
break;
case SSH_OPEN_RESOURCE_SHORTAGE:
_libssh2_error(session, LIBSSH2_ERROR_CHANNEL_FAILURE,
"Channel open failure (resource shortage)");
break;
default:
_libssh2_error(session, LIBSSH2_ERROR_CHANNEL_FAILURE,
"Channel open failure");
}
}
}
channel_error:
if(session->open_data) {
LIBSSH2_FREE(session, session->open_data);
session->open_data = NULL;
}
if(session->open_packet) {
LIBSSH2_FREE(session, session->open_packet);
session->open_packet = NULL;
}
if(session->open_channel) {
unsigned char channel_id[4];
LIBSSH2_FREE(session, session->open_channel->channel_type);
_libssh2_list_remove(&session->open_channel->node);
/* Clear out packets meant for this channel */
_libssh2_htonu32(channel_id, session->open_channel->local.id);
while((_libssh2_packet_ask(session, SSH_MSG_CHANNEL_DATA,
&session->open_data,
&session->open_data_len, 1,
channel_id, 4) >= 0)
||
(_libssh2_packet_ask(session, SSH_MSG_CHANNEL_EXTENDED_DATA,
&session->open_data,
&session->open_data_len, 1,
channel_id, 4) >= 0)) {
LIBSSH2_FREE(session, session->open_data);
session->open_data = NULL;
}
LIBSSH2_FREE(session, session->open_channel);
session->open_channel = NULL;
}
session->open_state = libssh2_NB_state_idle;
return NULL;
}
/*
* libssh2_channel_open_ex
*
* Establish a generic session channel
*/
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_channel_open_ex(LIBSSH2_SESSION *session, const char *type,
unsigned int type_len,
unsigned int window_size, unsigned int packet_size,
const char *msg, unsigned int msg_len)
{
LIBSSH2_CHANNEL *ptr;
if(!session)
return NULL;
BLOCK_ADJUST_ERRNO(ptr, session,
_libssh2_channel_open(session, type, type_len,
window_size, packet_size,
(unsigned char *)msg,
msg_len));
return ptr;
}
/*
* libssh2_channel_direct_tcpip_ex
*
* Tunnel TCP/IP connect through the SSH session to direct host/port
*/
static LIBSSH2_CHANNEL *
channel_direct_tcpip(LIBSSH2_SESSION * session, const char *host,
int port, const char *shost, int sport)
{
LIBSSH2_CHANNEL *channel;
unsigned char *s;
if(session->direct_state == libssh2_NB_state_idle) {
session->direct_host_len = strlen(host);
session->direct_shost_len = strlen(shost);
/* host_len(4) + port(4) + shost_len(4) + sport(4) */
session->direct_message_len =
session->direct_host_len + session->direct_shost_len + 16;
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Requesting direct-tcpip session from %s:%d to %s:%d",
shost, sport, host, port);
s = session->direct_message =
LIBSSH2_ALLOC(session, session->direct_message_len);
if(!session->direct_message) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"direct-tcpip connection");
return NULL;
}
_libssh2_store_str(&s, host, session->direct_host_len);
_libssh2_store_u32(&s, port);
_libssh2_store_str(&s, shost, session->direct_shost_len);
_libssh2_store_u32(&s, sport);
}
channel =
_libssh2_channel_open(session, "direct-tcpip",
sizeof("direct-tcpip") - 1,
LIBSSH2_CHANNEL_WINDOW_DEFAULT,
LIBSSH2_CHANNEL_PACKET_DEFAULT,
session->direct_message,
session->direct_message_len);
if(!channel &&
libssh2_session_last_errno(session) == LIBSSH2_ERROR_EAGAIN) {
/* The error code is still set to LIBSSH2_ERROR_EAGAIN, set our state
to created to avoid re-creating the package on next invoke */
session->direct_state = libssh2_NB_state_created;
return NULL;
}
/* by default we set (keep?) idle state... */
session->direct_state = libssh2_NB_state_idle;
LIBSSH2_FREE(session, session->direct_message);
session->direct_message = NULL;
return channel;
}
/*
* libssh2_channel_direct_tcpip_ex
*
* Tunnel TCP/IP connect through the SSH session to direct host/port
*/
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_channel_direct_tcpip_ex(LIBSSH2_SESSION *session, const char *host,
int port, const char *shost, int sport)
{
LIBSSH2_CHANNEL *ptr;
if(!session)
return NULL;
BLOCK_ADJUST_ERRNO(ptr, session,
channel_direct_tcpip(session, host, port,
shost, sport));
return ptr;
}
/*
* channel_forward_listen
*
* Bind a port on the remote host and listen for connections
*/
static LIBSSH2_LISTENER *
channel_forward_listen(LIBSSH2_SESSION * session, const char *host,
int port, int *bound_port, int queue_maxsize)
{
unsigned char *s;
static const unsigned char reply_codes[3] =
{ SSH_MSG_REQUEST_SUCCESS, SSH_MSG_REQUEST_FAILURE, 0 };
int rc;
if(!host)
host = "0.0.0.0";
if(session->fwdLstn_state == libssh2_NB_state_idle) {
session->fwdLstn_host_len = strlen(host);
/* 14 = packet_type(1) + request_len(4) + want_replay(1) + host_len(4)
+ port(4) */
session->fwdLstn_packet_len =
session->fwdLstn_host_len + (sizeof("tcpip-forward") - 1) + 14;
/* Zero the whole thing out */
memset(&session->fwdLstn_packet_requirev_state, 0,
sizeof(session->fwdLstn_packet_requirev_state));
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Requesting tcpip-forward session for %s:%d", host,
port);
s = session->fwdLstn_packet =
LIBSSH2_ALLOC(session, session->fwdLstn_packet_len);
if(!session->fwdLstn_packet) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for setenv packet");
return NULL;
}
*(s++) = SSH_MSG_GLOBAL_REQUEST;
_libssh2_store_str(&s, "tcpip-forward", sizeof("tcpip-forward") - 1);
*(s++) = 0x01; /* want_reply */
_libssh2_store_str(&s, host, session->fwdLstn_host_len);
_libssh2_store_u32(&s, port);
session->fwdLstn_state = libssh2_NB_state_created;
}
if(session->fwdLstn_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session,
session->fwdLstn_packet,
session->fwdLstn_packet_len,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block sending global-request packet for "
"forward listen request");
return NULL;
}
else if(rc) {
_libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send global-request packet for forward "
"listen request");
LIBSSH2_FREE(session, session->fwdLstn_packet);
session->fwdLstn_packet = NULL;
session->fwdLstn_state = libssh2_NB_state_idle;
return NULL;
}
LIBSSH2_FREE(session, session->fwdLstn_packet);
session->fwdLstn_packet = NULL;
session->fwdLstn_state = libssh2_NB_state_sent;
}
if(session->fwdLstn_state == libssh2_NB_state_sent) {
unsigned char *data;
size_t data_len;
rc = _libssh2_packet_requirev(session, reply_codes, &data, &data_len,
0, NULL, 0,
&session->fwdLstn_packet_requirev_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN, "Would block");
return NULL;
}
else if(rc || (data_len < 1)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO, "Unknown");
session->fwdLstn_state = libssh2_NB_state_idle;
return NULL;
}
if(data[0] == SSH_MSG_REQUEST_SUCCESS) {
LIBSSH2_LISTENER *listener;
listener = LIBSSH2_CALLOC(session, sizeof(LIBSSH2_LISTENER));
if(!listener)
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for listener queue");
else {
listener->host =
LIBSSH2_ALLOC(session, session->fwdLstn_host_len + 1);
if(!listener->host) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory "
"for listener queue");
LIBSSH2_FREE(session, listener);
listener = NULL;
}
else {
listener->session = session;
memcpy(listener->host, host, session->fwdLstn_host_len);
listener->host[session->fwdLstn_host_len] = 0;
if(data_len >= 5 && !port) {
listener->port = _libssh2_ntohu32(data + 1);
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Dynamic tcpip-forward port "
"allocated: %d",
listener->port);
}
else
listener->port = port;
listener->queue_size = 0;
listener->queue_maxsize = queue_maxsize;
/* append this to the parent's list of listeners */
_libssh2_list_add(&session->listeners, &listener->node);
if(bound_port) {
*bound_port = listener->port;
}
}
}
LIBSSH2_FREE(session, data);
session->fwdLstn_state = libssh2_NB_state_idle;
return listener;
}
else if(data[0] == SSH_MSG_REQUEST_FAILURE) {
LIBSSH2_FREE(session, data);
_libssh2_error(session, LIBSSH2_ERROR_REQUEST_DENIED,
"Unable to complete request for forward-listen");
session->fwdLstn_state = libssh2_NB_state_idle;
return NULL;
}
}
session->fwdLstn_state = libssh2_NB_state_idle;
return NULL;
}
/*
* libssh2_channel_forward_listen_ex
*
* Bind a port on the remote host and listen for connections
*/
LIBSSH2_API LIBSSH2_LISTENER *
libssh2_channel_forward_listen_ex(LIBSSH2_SESSION *session, const char *host,
int port, int *bound_port, int queue_maxsize)
{
LIBSSH2_LISTENER *ptr;
if(!session)
return NULL;
BLOCK_ADJUST_ERRNO(ptr, session,
channel_forward_listen(session, host, port, bound_port,
queue_maxsize));
return ptr;
}
/*
* _libssh2_channel_forward_cancel
*
* Stop listening on a remote port and free the listener
* Toss out any pending (un-accept()ed) connections
*
* Return 0 on success, LIBSSH2_ERROR_EAGAIN if would block, -1 on error
*/
int _libssh2_channel_forward_cancel(LIBSSH2_LISTENER *listener)
{
LIBSSH2_SESSION *session = listener->session;
LIBSSH2_CHANNEL *queued;
unsigned char *packet, *s;
size_t host_len = strlen(listener->host);
/* 14 = packet_type(1) + request_len(4) + want_replay(1) + host_len(4) +
port(4) */
size_t packet_len =
host_len + 14 + sizeof("cancel-tcpip-forward") - 1;
int rc;
int retcode = 0;
if(listener->chanFwdCncl_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Cancelling tcpip-forward session for %s:%d",
listener->host, listener->port);
s = packet = LIBSSH2_ALLOC(session, packet_len);
if(!packet) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for setenv packet");
return LIBSSH2_ERROR_ALLOC;
}
*(s++) = SSH_MSG_GLOBAL_REQUEST;
_libssh2_store_str(&s, "cancel-tcpip-forward",
sizeof("cancel-tcpip-forward") - 1);
*(s++) = 0x00; /* want_reply */
_libssh2_store_str(&s, listener->host, host_len);
_libssh2_store_u32(&s, listener->port);
listener->chanFwdCncl_state = libssh2_NB_state_created;
}
else {
packet = listener->chanFwdCncl_data;
}
if(listener->chanFwdCncl_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, packet, packet_len, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, rc,
"Would block sending forward request");
listener->chanFwdCncl_data = packet;
return rc;
}
else if(rc) {
_libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send global-request packet for forward "
"listen request");
/* set the state to something we don't check for, for the
unfortunate situation where we get an EAGAIN further down
when trying to bail out due to errors! */
listener->chanFwdCncl_state = libssh2_NB_state_sent;
retcode = LIBSSH2_ERROR_SOCKET_SEND;
}
LIBSSH2_FREE(session, packet);
listener->chanFwdCncl_state = libssh2_NB_state_sent;
}
queued = _libssh2_list_first(&listener->queue);
while(queued) {
LIBSSH2_CHANNEL *next = _libssh2_list_next(&queued->node);
rc = _libssh2_channel_free(queued);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
queued = next;
}
LIBSSH2_FREE(session, listener->host);
/* remove this entry from the parent's list of listeners */
_libssh2_list_remove(&listener->node);
LIBSSH2_FREE(session, listener);
return retcode;
}
/*
* libssh2_channel_forward_cancel
*
* Stop listening on a remote port and free the listener
* Toss out any pending (un-accept()ed) connections
*
* Return 0 on success, LIBSSH2_ERROR_EAGAIN if would block, -1 on error
*/
LIBSSH2_API int
libssh2_channel_forward_cancel(LIBSSH2_LISTENER *listener)
{
int rc;
if(!listener)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, listener->session,
_libssh2_channel_forward_cancel(listener));
return rc;
}
/*
* channel_forward_accept
*
* Accept a connection
*/
static LIBSSH2_CHANNEL *
channel_forward_accept(LIBSSH2_LISTENER *listener)
{
int rc;
do {
rc = _libssh2_transport_read(listener->session);
} while(rc > 0);
if(_libssh2_list_first(&listener->queue)) {
LIBSSH2_CHANNEL *channel = _libssh2_list_first(&listener->queue);
/* detach channel from listener's queue */
_libssh2_list_remove(&channel->node);
listener->queue_size--;
/* add channel to session's channel list */
_libssh2_list_add(&channel->session->channels, &channel->node);
return channel;
}
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(listener->session, LIBSSH2_ERROR_EAGAIN,
"Would block waiting for packet");
}
else
_libssh2_error(listener->session, LIBSSH2_ERROR_CHANNEL_UNKNOWN,
"Channel not found");
return NULL;
}
/*
* libssh2_channel_forward_accept
*
* Accept a connection
*/
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_channel_forward_accept(LIBSSH2_LISTENER *listener)
{
LIBSSH2_CHANNEL *ptr;
if(!listener)
return NULL;
BLOCK_ADJUST_ERRNO(ptr, listener->session,
channel_forward_accept(listener));
return ptr;
}
/*
* channel_setenv
*
* Set an environment variable prior to requesting a shell/program/subsystem
*/
static int channel_setenv(LIBSSH2_CHANNEL *channel,
const char *varname, unsigned int varname_len,
const char *value, unsigned int value_len)
{
LIBSSH2_SESSION *session = channel->session;
unsigned char *s, *data;
static const unsigned char reply_codes[3] =
{ SSH_MSG_CHANNEL_SUCCESS, SSH_MSG_CHANNEL_FAILURE, 0 };
size_t data_len;
int rc;
if(channel->setenv_state == libssh2_NB_state_idle) {
/* 21 = packet_type(1) + channel_id(4) + request_len(4) +
* request(3)"env" + want_reply(1) + varname_len(4) + value_len(4) */
channel->setenv_packet_len = varname_len + value_len + 21;
/* Zero the whole thing out */
memset(&channel->setenv_packet_requirev_state, 0,
sizeof(channel->setenv_packet_requirev_state));
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Setting remote environment variable: %s=%s on "
"channel %lu/%lu",
varname, value, channel->local.id, channel->remote.id);
s = channel->setenv_packet =
LIBSSH2_ALLOC(session, channel->setenv_packet_len);
if(!channel->setenv_packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory "
"for setenv packet");
}
*(s++) = SSH_MSG_CHANNEL_REQUEST;
_libssh2_store_u32(&s, channel->remote.id);
_libssh2_store_str(&s, "env", sizeof("env") - 1);
*(s++) = 0x01;
_libssh2_store_str(&s, varname, varname_len);
_libssh2_store_str(&s, value, value_len);
channel->setenv_state = libssh2_NB_state_created;
}
if(channel->setenv_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session,
channel->setenv_packet,
channel->setenv_packet_len,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, rc,
"Would block sending setenv request");
return rc;
}
else if(rc) {
LIBSSH2_FREE(session, channel->setenv_packet);
channel->setenv_packet = NULL;
channel->setenv_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send channel-request packet for "
"setenv request");
}
LIBSSH2_FREE(session, channel->setenv_packet);
channel->setenv_packet = NULL;
_libssh2_htonu32(channel->setenv_local_channel, channel->local.id);
channel->setenv_state = libssh2_NB_state_sent;
}
if(channel->setenv_state == libssh2_NB_state_sent) {
rc = _libssh2_packet_requirev(session, reply_codes, &data, &data_len,
1, channel->setenv_local_channel, 4,
&channel->
setenv_packet_requirev_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
if(rc) {
channel->setenv_state = libssh2_NB_state_idle;
return rc;
}
else if(data_len < 1) {
channel->setenv_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected packet size");
}
if(data[0] == SSH_MSG_CHANNEL_SUCCESS) {
LIBSSH2_FREE(session, data);
channel->setenv_state = libssh2_NB_state_idle;
return 0;
}
LIBSSH2_FREE(session, data);
}
channel->setenv_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_CHANNEL_REQUEST_DENIED,
"Unable to complete request for channel-setenv");
}
/*
* libssh2_channel_setenv_ex
*
* Set an environment variable prior to requesting a shell/program/subsystem
*/
LIBSSH2_API int
libssh2_channel_setenv_ex(LIBSSH2_CHANNEL *channel,
const char *varname, unsigned int varname_len,
const char *value, unsigned int value_len)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session,
channel_setenv(channel, varname, varname_len,
value, value_len));
return rc;
}
/*
* channel_request_pty
* Duh... Request a PTY
*/
static int channel_request_pty(LIBSSH2_CHANNEL *channel,
const char *term, unsigned int term_len,
const char *modes, unsigned int modes_len,
int width, int height,
int width_px, int height_px)
{
LIBSSH2_SESSION *session = channel->session;
unsigned char *s;
static const unsigned char reply_codes[3] =
{ SSH_MSG_CHANNEL_SUCCESS, SSH_MSG_CHANNEL_FAILURE, 0 };
int rc;
if(channel->reqPTY_state == libssh2_NB_state_idle) {
/* 41 = packet_type(1) + channel(4) + pty_req_len(4) + "pty_req"(7) +
* want_reply(1) + term_len(4) + width(4) + height(4) + width_px(4) +
* height_px(4) + modes_len(4) */
if(term_len + modes_len > 256) {
return _libssh2_error(session, LIBSSH2_ERROR_INVAL,
"term + mode lengths too large");
}
channel->reqPTY_packet_len = term_len + modes_len + 41;
/* Zero the whole thing out */
memset(&channel->reqPTY_packet_requirev_state, 0,
sizeof(channel->reqPTY_packet_requirev_state));
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Allocating tty on channel %lu/%lu", channel->local.id,
channel->remote.id);
s = channel->reqPTY_packet;
*(s++) = SSH_MSG_CHANNEL_REQUEST;
_libssh2_store_u32(&s, channel->remote.id);
_libssh2_store_str(&s, (char *)"pty-req", sizeof("pty-req") - 1);
*(s++) = 0x01;
_libssh2_store_str(&s, term, term_len);
_libssh2_store_u32(&s, width);
_libssh2_store_u32(&s, height);
_libssh2_store_u32(&s, width_px);
_libssh2_store_u32(&s, height_px);
_libssh2_store_str(&s, modes, modes_len);
channel->reqPTY_state = libssh2_NB_state_created;
}
if(channel->reqPTY_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, channel->reqPTY_packet,
channel->reqPTY_packet_len,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, rc,
"Would block sending pty request");
return rc;
}
else if(rc) {
channel->reqPTY_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Unable to send pty-request packet");
}
_libssh2_htonu32(channel->reqPTY_local_channel, channel->local.id);
channel->reqPTY_state = libssh2_NB_state_sent;
}
if(channel->reqPTY_state == libssh2_NB_state_sent) {
unsigned char *data;
size_t data_len;
unsigned char code;
rc = _libssh2_packet_requirev(session, reply_codes, &data, &data_len,
1, channel->reqPTY_local_channel, 4,
&channel->reqPTY_packet_requirev_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc || data_len < 1) {
channel->reqPTY_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Failed to require the PTY package");
}
code = data[0];
LIBSSH2_FREE(session, data);
channel->reqPTY_state = libssh2_NB_state_idle;
if(code == SSH_MSG_CHANNEL_SUCCESS)
return 0;
}
return _libssh2_error(session, LIBSSH2_ERROR_CHANNEL_REQUEST_DENIED,
"Unable to complete request for "
"channel request-pty");
}
/**
* channel_request_auth_agent
* The actual re-entrant method which requests an auth agent.
* */
static int channel_request_auth_agent(LIBSSH2_CHANNEL *channel,
const char *request_str,
int request_str_len)
{
LIBSSH2_SESSION *session = channel->session;
unsigned char *s;
static const unsigned char reply_codes[3] =
{ SSH_MSG_CHANNEL_SUCCESS, SSH_MSG_CHANNEL_FAILURE, 0 };
int rc;
if(channel->req_auth_agent_state == libssh2_NB_state_idle) {
/* Only valid options are "auth-agent-req" and
* "auth-agent-req_at_openssh.com" so we make sure it is not
* actually longer than the longest possible. */
if(request_str_len > 26) {
return _libssh2_error(session, LIBSSH2_ERROR_INVAL,
"request_str length too large");
}
/*
* Length: 24 or 36 = packet_type(1) + channel(4) + req_len(4) +
* request_str (variable) + want_reply (1) */
channel->req_auth_agent_packet_len = 10 + request_str_len;
/* Zero out the requireev state to reset */
memset(&channel->req_auth_agent_requirev_state, 0,
sizeof(channel->req_auth_agent_requirev_state));
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Requesting auth agent on channel %lu/%lu",
channel->local.id, channel->remote.id);
/*
* byte SSH_MSG_CHANNEL_REQUEST
* uint32 recipient channel
* string "auth-agent-req"
* boolean want reply
* */
s = channel->req_auth_agent_packet;
*(s++) = SSH_MSG_CHANNEL_REQUEST;
_libssh2_store_u32(&s, channel->remote.id);
_libssh2_store_str(&s, (char *)request_str, request_str_len);
*(s++) = 0x01;
channel->req_auth_agent_state = libssh2_NB_state_created;
}
if(channel->req_auth_agent_state == libssh2_NB_state_created) {
/* Send the packet, we can use sizeof() on the packet because it
* is always completely filled; there are no variable length fields. */
rc = _libssh2_transport_send(session, channel->req_auth_agent_packet,
channel->req_auth_agent_packet_len,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, rc,
"Would block sending auth-agent request");
}
else if(rc) {
channel->req_auth_agent_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Unable to send auth-agent request");
}
_libssh2_htonu32(channel->req_auth_agent_local_channel,
channel->local.id);
channel->req_auth_agent_state = libssh2_NB_state_sent;
}
if(channel->req_auth_agent_state == libssh2_NB_state_sent) {
unsigned char *data;
size_t data_len;
unsigned char code;
rc = _libssh2_packet_requirev(
session, reply_codes, &data, &data_len, 1,
channel->req_auth_agent_local_channel,
4, &channel->req_auth_agent_requirev_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
channel->req_auth_agent_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Failed to request auth-agent");
}
code = data[0];
LIBSSH2_FREE(session, data);
channel->req_auth_agent_state = libssh2_NB_state_idle;
if(code == SSH_MSG_CHANNEL_SUCCESS)
return 0;
}
return _libssh2_error(session, LIBSSH2_ERROR_CHANNEL_REQUEST_DENIED,
"Unable to complete request for auth-agent");
}
/**
* libssh2_channel_request_auth_agent
* Requests that agent forwarding be enabled for the session. The
* request must be sent over a specific channel, which starts the agent
* listener on the remote side. Once the channel is closed, the agent
* listener continues to exist.
* */
LIBSSH2_API int
libssh2_channel_request_auth_agent(LIBSSH2_CHANNEL *channel)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
rc = LIBSSH2_ERROR_CHANNEL_UNKNOWN;
/* The current RFC draft for agent forwarding says you're supposed to
* send "auth-agent-req," but most SSH servers out there right now
* actually expect "[email protected]", so we try that
* first. */
if(channel->req_auth_agent_try_state == libssh2_NB_state_idle) {
BLOCK_ADJUST(rc, channel->session,
channel_request_auth_agent(channel,
"[email protected]",
26));
/* If we failed (but not with EAGAIN), then we move onto
* the next step to try another request type. */
if(rc != LIBSSH2_ERROR_NONE &&
rc != LIBSSH2_ERROR_EAGAIN)
channel->req_auth_agent_try_state = libssh2_NB_state_sent;
}
if(channel->req_auth_agent_try_state == libssh2_NB_state_sent) {
BLOCK_ADJUST(rc, channel->session,
channel_request_auth_agent(channel,
"auth-agent-req", 14));
/* If we failed without an EAGAIN, then move on with this
* state machine. */
if(rc != LIBSSH2_ERROR_NONE &&
rc != LIBSSH2_ERROR_EAGAIN)
channel->req_auth_agent_try_state = libssh2_NB_state_sent1;
}
/* If things are good, reset the try state. */
if(rc == LIBSSH2_ERROR_NONE)
channel->req_auth_agent_try_state = libssh2_NB_state_idle;
return rc;
}
/*
* libssh2_channel_request_pty_ex
* Duh... Request a PTY
*/
LIBSSH2_API int
libssh2_channel_request_pty_ex(LIBSSH2_CHANNEL *channel, const char *term,
unsigned int term_len, const char *modes,
unsigned int modes_len, int width, int height,
int width_px, int height_px)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session,
channel_request_pty(channel, term, term_len, modes,
modes_len, width, height,
width_px, height_px));
return rc;
}
static int
channel_request_pty_size(LIBSSH2_CHANNEL * channel, int width,
int height, int width_px, int height_px)
{
LIBSSH2_SESSION *session = channel->session;
unsigned char *s;
int rc;
int retcode = LIBSSH2_ERROR_PROTO;
if(channel->reqPTY_state == libssh2_NB_state_idle) {
channel->reqPTY_packet_len = 39;
/* Zero the whole thing out */
memset(&channel->reqPTY_packet_requirev_state, 0,
sizeof(channel->reqPTY_packet_requirev_state));
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"changing tty size on channel %lu/%lu",
channel->local.id,
channel->remote.id);
s = channel->reqPTY_packet;
*(s++) = SSH_MSG_CHANNEL_REQUEST;
_libssh2_store_u32(&s, channel->remote.id);
_libssh2_store_str(&s, (char *)"window-change",
sizeof("window-change") - 1);
*(s++) = 0x00; /* Don't reply */
_libssh2_store_u32(&s, width);
_libssh2_store_u32(&s, height);
_libssh2_store_u32(&s, width_px);
_libssh2_store_u32(&s, height_px);
channel->reqPTY_state = libssh2_NB_state_created;
}
if(channel->reqPTY_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, channel->reqPTY_packet,
channel->reqPTY_packet_len,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, rc,
"Would block sending window-change request");
return rc;
}
else if(rc) {
channel->reqPTY_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Unable to send window-change packet");
}
_libssh2_htonu32(channel->reqPTY_local_channel, channel->local.id);
retcode = LIBSSH2_ERROR_NONE;
}
channel->reqPTY_state = libssh2_NB_state_idle;
return retcode;
}
LIBSSH2_API int
libssh2_channel_request_pty_size_ex(LIBSSH2_CHANNEL *channel, int width,
int height, int width_px, int height_px)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session,
channel_request_pty_size(channel, width, height, width_px,
height_px));
return rc;
}
/* Keep this an even number */
#define LIBSSH2_X11_RANDOM_COOKIE_LEN 32
/*
* channel_x11_req
* Request X11 forwarding
*/
static int
channel_x11_req(LIBSSH2_CHANNEL *channel, int single_connection,
const char *auth_proto, const char *auth_cookie,
int screen_number)
{
LIBSSH2_SESSION *session = channel->session;
unsigned char *s;
static const unsigned char reply_codes[3] =
{ SSH_MSG_CHANNEL_SUCCESS, SSH_MSG_CHANNEL_FAILURE, 0 };
size_t proto_len =
auth_proto ? strlen(auth_proto) : (sizeof("MIT-MAGIC-COOKIE-1") - 1);
size_t cookie_len =
auth_cookie ? strlen(auth_cookie) : LIBSSH2_X11_RANDOM_COOKIE_LEN;
int rc;
if(channel->reqX11_state == libssh2_NB_state_idle) {
/* 30 = packet_type(1) + channel(4) + x11_req_len(4) + "x11-req"(7) +
* want_reply(1) + single_cnx(1) + proto_len(4) + cookie_len(4) +
* screen_num(4) */
channel->reqX11_packet_len = proto_len + cookie_len + 30;
/* Zero the whole thing out */
memset(&channel->reqX11_packet_requirev_state, 0,
sizeof(channel->reqX11_packet_requirev_state));
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Requesting x11-req for channel %lu/%lu: single=%d "
"proto=%s cookie=%s screen=%d",
channel->local.id, channel->remote.id,
single_connection,
auth_proto ? auth_proto : "MIT-MAGIC-COOKIE-1",
auth_cookie ? auth_cookie : "<random>", screen_number);
s = channel->reqX11_packet =
LIBSSH2_ALLOC(session, channel->reqX11_packet_len);
if(!channel->reqX11_packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for pty-request");
}
*(s++) = SSH_MSG_CHANNEL_REQUEST;
_libssh2_store_u32(&s, channel->remote.id);
_libssh2_store_str(&s, "x11-req", sizeof("x11-req") - 1);
*(s++) = 0x01; /* want_reply */
*(s++) = single_connection ? 0x01 : 0x00;
_libssh2_store_str(&s, auth_proto ? auth_proto : "MIT-MAGIC-COOKIE-1",
proto_len);
_libssh2_store_u32(&s, cookie_len);
if(auth_cookie) {
memcpy(s, auth_cookie, cookie_len);
}
else {
int i;
/* note: the extra +1 below is necessary since the sprintf()
loop will always write 3 bytes so the last one will write
the trailing zero at the LIBSSH2_X11_RANDOM_COOKIE_LEN/2
border */
unsigned char buffer[(LIBSSH2_X11_RANDOM_COOKIE_LEN / 2) + 1];
if(_libssh2_random(buffer, LIBSSH2_X11_RANDOM_COOKIE_LEN / 2)) {
return _libssh2_error(session, LIBSSH2_ERROR_RANDGEN,
"Unable to get random bytes "
"for x11-req cookie");
}
for(i = 0; i < (LIBSSH2_X11_RANDOM_COOKIE_LEN / 2); i++) {
snprintf((char *)&s[i*2], 3, "%02X", buffer[i]);
}
}
s += cookie_len;
_libssh2_store_u32(&s, screen_number);
channel->reqX11_state = libssh2_NB_state_created;
}
if(channel->reqX11_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, channel->reqX11_packet,
channel->reqX11_packet_len,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, rc,
"Would block sending X11-req packet");
return rc;
}
if(rc) {
LIBSSH2_FREE(session, channel->reqX11_packet);
channel->reqX11_packet = NULL;
channel->reqX11_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Unable to send x11-req packet");
}
LIBSSH2_FREE(session, channel->reqX11_packet);
channel->reqX11_packet = NULL;
_libssh2_htonu32(channel->reqX11_local_channel, channel->local.id);
channel->reqX11_state = libssh2_NB_state_sent;
}
if(channel->reqX11_state == libssh2_NB_state_sent) {
size_t data_len;
unsigned char *data;
unsigned char code;
rc = _libssh2_packet_requirev(session, reply_codes, &data, &data_len,
1, channel->reqX11_local_channel, 4,
&channel->reqX11_packet_requirev_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc || data_len < 1) {
channel->reqX11_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"waiting for x11-req response packet");
}
code = data[0];
LIBSSH2_FREE(session, data);
channel->reqX11_state = libssh2_NB_state_idle;
if(code == SSH_MSG_CHANNEL_SUCCESS)
return 0;
}
return _libssh2_error(session, LIBSSH2_ERROR_CHANNEL_REQUEST_DENIED,
"Unable to complete request for channel x11-req");
}
/*
* libssh2_channel_x11_req_ex
* Request X11 forwarding
*/
LIBSSH2_API int
libssh2_channel_x11_req_ex(LIBSSH2_CHANNEL *channel, int single_connection,
const char *auth_proto, const char *auth_cookie,
int screen_number)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session,
channel_x11_req(channel, single_connection, auth_proto,
auth_cookie, screen_number));
return rc;
}
/*
* _libssh2_channel_process_startup
*
* Primitive for libssh2_channel_(shell|exec|subsystem)
*/
int
_libssh2_channel_process_startup(LIBSSH2_CHANNEL *channel,
const char *request, size_t request_len,
const char *message, size_t message_len)
{
LIBSSH2_SESSION *session = channel->session;
unsigned char *s;
static const unsigned char reply_codes[3] =
{ SSH_MSG_CHANNEL_SUCCESS, SSH_MSG_CHANNEL_FAILURE, 0 };
int rc;
if(channel->process_state == libssh2_NB_state_end) {
return _libssh2_error(session, LIBSSH2_ERROR_BAD_USE,
"Channel can not be reused");
}
if(channel->process_state == libssh2_NB_state_idle) {
/* 10 = packet_type(1) + channel(4) + request_len(4) + want_reply(1) */
channel->process_packet_len = request_len + 10;
/* Zero the whole thing out */
memset(&channel->process_packet_requirev_state, 0,
sizeof(channel->process_packet_requirev_state));
if(message)
channel->process_packet_len += + 4;
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"starting request(%s) on channel %lu/%lu, message=%s",
request, channel->local.id, channel->remote.id,
message ? message : "<null>");
s = channel->process_packet =
LIBSSH2_ALLOC(session, channel->process_packet_len);
if(!channel->process_packet)
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory "
"for channel-process request");
*(s++) = SSH_MSG_CHANNEL_REQUEST;
_libssh2_store_u32(&s, channel->remote.id);
_libssh2_store_str(&s, request, request_len);
*(s++) = 0x01;
if(message)
_libssh2_store_u32(&s, message_len);
channel->process_state = libssh2_NB_state_created;
}
if(channel->process_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session,
channel->process_packet,
channel->process_packet_len,
(unsigned char *)message, message_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, rc,
"Would block sending channel request");
return rc;
}
else if(rc) {
LIBSSH2_FREE(session, channel->process_packet);
channel->process_packet = NULL;
channel->process_state = libssh2_NB_state_end;
return _libssh2_error(session, rc,
"Unable to send channel request");
}
LIBSSH2_FREE(session, channel->process_packet);
channel->process_packet = NULL;
_libssh2_htonu32(channel->process_local_channel, channel->local.id);
channel->process_state = libssh2_NB_state_sent;
}
if(channel->process_state == libssh2_NB_state_sent) {
unsigned char *data;
size_t data_len;
unsigned char code;
rc = _libssh2_packet_requirev(session, reply_codes, &data, &data_len,
1, channel->process_local_channel, 4,
&channel->process_packet_requirev_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc || data_len < 1) {
channel->process_state = libssh2_NB_state_end;
return _libssh2_error(session, rc,
"Failed waiting for channel success");
}
code = data[0];
LIBSSH2_FREE(session, data);
channel->process_state = libssh2_NB_state_end;
if(code == SSH_MSG_CHANNEL_SUCCESS)
return 0;
}
return _libssh2_error(session, LIBSSH2_ERROR_CHANNEL_REQUEST_DENIED,
"Unable to complete request for "
"channel-process-startup");
}
/*
* libssh2_channel_process_startup
*
* Primitive for libssh2_channel_(shell|exec|subsystem)
*/
LIBSSH2_API int
libssh2_channel_process_startup(LIBSSH2_CHANNEL *channel,
const char *req, unsigned int req_len,
const char *msg, unsigned int msg_len)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session,
_libssh2_channel_process_startup(channel, req, req_len,
msg, msg_len));
return rc;
}
/*
* libssh2_channel_set_blocking
*
* Set a channel's BEHAVIOR blocking on or off. The socket will remain non-
* blocking.
*/
LIBSSH2_API void
libssh2_channel_set_blocking(LIBSSH2_CHANNEL * channel, int blocking)
{
if(channel)
(void) _libssh2_session_set_blocking(channel->session, blocking);
}
/*
* _libssh2_channel_flush
*
* Flush data from one (or all) stream
* Returns number of bytes flushed, or negative on failure
*/
int
_libssh2_channel_flush(LIBSSH2_CHANNEL *channel, int streamid)
{
if(channel->flush_state == libssh2_NB_state_idle) {
LIBSSH2_PACKET *packet =
_libssh2_list_first(&channel->session->packets);
channel->flush_refund_bytes = 0;
channel->flush_flush_bytes = 0;
while(packet) {
unsigned char packet_type;
LIBSSH2_PACKET *next = _libssh2_list_next(&packet->node);
if(packet->data_len < 1) {
packet = next;
_libssh2_debug(channel->session, LIBSSH2_TRACE_ERROR,
"Unexpected packet length");
continue;
}
packet_type = packet->data[0];
if(((packet_type == SSH_MSG_CHANNEL_DATA)
|| (packet_type == SSH_MSG_CHANNEL_EXTENDED_DATA))
&& ((packet->data_len >= 5)
&& (_libssh2_ntohu32(packet->data + 1)
== channel->local.id))) {
/* It's our channel at least */
int packet_stream_id;
if(packet_type == SSH_MSG_CHANNEL_DATA) {
packet_stream_id = 0;
}
else if(packet->data_len >= 9) {
packet_stream_id = _libssh2_ntohu32(packet->data + 5);
}
else {
channel->flush_state = libssh2_NB_state_idle;
return _libssh2_error(channel->session,
LIBSSH2_ERROR_PROTO,
"Unexpected packet length");
}
if((streamid == LIBSSH2_CHANNEL_FLUSH_ALL)
|| ((packet_type == SSH_MSG_CHANNEL_EXTENDED_DATA)
&& ((streamid == LIBSSH2_CHANNEL_FLUSH_EXTENDED_DATA)
|| (streamid == packet_stream_id)))
|| ((packet_type == SSH_MSG_CHANNEL_DATA)
&& (streamid == 0))) {
size_t bytes_to_flush = packet->data_len -
packet->data_head;
_libssh2_debug(channel->session, LIBSSH2_TRACE_CONN,
"Flushing %d bytes of data from stream "
"%lu on channel %lu/%lu",
bytes_to_flush, packet_stream_id,
channel->local.id, channel->remote.id);
/* It's one of the streams we wanted to flush */
channel->flush_refund_bytes += packet->data_len - 13;
channel->flush_flush_bytes += bytes_to_flush;
LIBSSH2_FREE(channel->session, packet->data);
/* remove this packet from the parent's list */
_libssh2_list_remove(&packet->node);
LIBSSH2_FREE(channel->session, packet);
}
}
packet = next;
}
channel->flush_state = libssh2_NB_state_created;
}
channel->read_avail -= channel->flush_flush_bytes;
channel->remote.window_size -= channel->flush_flush_bytes;
if(channel->flush_refund_bytes) {
int rc =
_libssh2_channel_receive_window_adjust(channel,
channel->flush_refund_bytes,
1, NULL);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
}
channel->flush_state = libssh2_NB_state_idle;
return channel->flush_flush_bytes;
}
/*
* libssh2_channel_flush_ex
*
* Flush data from one (or all) stream
* Returns number of bytes flushed, or negative on failure
*/
LIBSSH2_API int
libssh2_channel_flush_ex(LIBSSH2_CHANNEL *channel, int stream)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session,
_libssh2_channel_flush(channel, stream));
return rc;
}
/*
* libssh2_channel_get_exit_status
*
* Return the channel's program exit status. Note that the actual protocol
* provides the full 32bit this function returns. We cannot abuse it to
* return error values in case of errors so we return a zero if channel is
* NULL.
*/
LIBSSH2_API int
libssh2_channel_get_exit_status(LIBSSH2_CHANNEL *channel)
{
if(!channel)
return 0;
return channel->exit_status;
}
/*
* libssh2_channel_get_exit_signal
*
* Get exit signal (without leading "SIG"), error message, and language
* tag into newly allocated buffers of indicated length. Caller can
* use NULL pointers to indicate that the value should not be set. The
* *_len variables are set if they are non-NULL even if the
* corresponding string parameter is NULL. Returns LIBSSH2_ERROR_NONE
* on success, or an API error code.
*/
LIBSSH2_API int
libssh2_channel_get_exit_signal(LIBSSH2_CHANNEL *channel,
char **exitsignal,
size_t *exitsignal_len,
char **errmsg,
size_t *errmsg_len,
char **langtag,
size_t *langtag_len)
{
size_t namelen = 0;
if(channel) {
LIBSSH2_SESSION *session = channel->session;
if(channel->exit_signal) {
namelen = strlen(channel->exit_signal);
if(exitsignal) {
*exitsignal = LIBSSH2_ALLOC(session, namelen + 1);
if(!*exitsignal) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for signal name");
}
memcpy(*exitsignal, channel->exit_signal, namelen);
(*exitsignal)[namelen] = '\0';
}
if(exitsignal_len)
*exitsignal_len = namelen;
}
else {
if(exitsignal)
*exitsignal = NULL;
if(exitsignal_len)
*exitsignal_len = 0;
}
/* TODO: set error message and language tag */
if(errmsg)
*errmsg = NULL;
if(errmsg_len)
*errmsg_len = 0;
if(langtag)
*langtag = NULL;
if(langtag_len)
*langtag_len = 0;
}
return LIBSSH2_ERROR_NONE;
}
/*
* _libssh2_channel_receive_window_adjust
*
* Adjust the receive window for a channel by adjustment bytes. If the amount
* to be adjusted is less than LIBSSH2_CHANNEL_MINADJUST and force is 0 the
* adjustment amount will be queued for a later packet.
*
* Calls _libssh2_error() !
*/
int
_libssh2_channel_receive_window_adjust(LIBSSH2_CHANNEL * channel,
uint32_t adjustment,
unsigned char force,
unsigned int *store)
{
int rc;
if(store)
*store = channel->remote.window_size;
if(channel->adjust_state == libssh2_NB_state_idle) {
if(!force
&& (adjustment + channel->adjust_queue <
LIBSSH2_CHANNEL_MINADJUST)) {
_libssh2_debug(channel->session, LIBSSH2_TRACE_CONN,
"Queueing %lu bytes for receive window adjustment "
"for channel %lu/%lu",
adjustment, channel->local.id, channel->remote.id);
channel->adjust_queue += adjustment;
return 0;
}
if(!adjustment && !channel->adjust_queue) {
return 0;
}
adjustment += channel->adjust_queue;
channel->adjust_queue = 0;
/* Adjust the window based on the block we just freed */
channel->adjust_adjust[0] = SSH_MSG_CHANNEL_WINDOW_ADJUST;
_libssh2_htonu32(&channel->adjust_adjust[1], channel->remote.id);
_libssh2_htonu32(&channel->adjust_adjust[5], adjustment);
_libssh2_debug(channel->session, LIBSSH2_TRACE_CONN,
"Adjusting window %lu bytes for data on "
"channel %lu/%lu",
adjustment, channel->local.id, channel->remote.id);
channel->adjust_state = libssh2_NB_state_created;
}
rc = _libssh2_transport_send(channel->session, channel->adjust_adjust, 9,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(channel->session, rc,
"Would block sending window adjust");
return rc;
}
else if(rc) {
channel->adjust_queue = adjustment;
return _libssh2_error(channel->session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send transfer-window adjustment "
"packet, deferring");
}
else {
channel->remote.window_size += adjustment;
}
channel->adjust_state = libssh2_NB_state_idle;
return 0;
}
/*
* libssh2_channel_receive_window_adjust
*
* DEPRECATED
*
* Adjust the receive window for a channel by adjustment bytes. If the amount
* to be adjusted is less than LIBSSH2_CHANNEL_MINADJUST and force is 0 the
* adjustment amount will be queued for a later packet.
*
* Returns the new size of the receive window (as understood by remote end).
* Note that it might return EAGAIN too which is highly stupid.
*
*/
LIBSSH2_API unsigned long
libssh2_channel_receive_window_adjust(LIBSSH2_CHANNEL *channel,
unsigned long adj,
unsigned char force)
{
unsigned int window;
int rc;
if(!channel)
return (unsigned long)LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session,
_libssh2_channel_receive_window_adjust(channel, adj,
force, &window));
/* stupid - but this is how it was made to work before and this is just
kept for backwards compatibility */
return rc ? (unsigned long)rc : window;
}
/*
* libssh2_channel_receive_window_adjust2
*
* Adjust the receive window for a channel by adjustment bytes. If the amount
* to be adjusted is less than LIBSSH2_CHANNEL_MINADJUST and force is 0 the
* adjustment amount will be queued for a later packet.
*
* Stores the new size of the receive window in the data 'window' points to.
*
* Returns the "normal" error code: 0 for success, negative for failure.
*/
LIBSSH2_API int
libssh2_channel_receive_window_adjust2(LIBSSH2_CHANNEL *channel,
unsigned long adj,
unsigned char force,
unsigned int *window)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session,
_libssh2_channel_receive_window_adjust(channel, adj, force,
window));
return rc;
}
int
_libssh2_channel_extended_data(LIBSSH2_CHANNEL *channel, int ignore_mode)
{
if(channel->extData2_state == libssh2_NB_state_idle) {
_libssh2_debug(channel->session, LIBSSH2_TRACE_CONN,
"Setting channel %lu/%lu handle_extended_data"
" mode to %d",
channel->local.id, channel->remote.id, ignore_mode);
channel->remote.extended_data_ignore_mode = (char)ignore_mode;
channel->extData2_state = libssh2_NB_state_created;
}
if(channel->extData2_state == libssh2_NB_state_idle) {
if(ignore_mode == LIBSSH2_CHANNEL_EXTENDED_DATA_IGNORE) {
int rc =
_libssh2_channel_flush(channel,
LIBSSH2_CHANNEL_FLUSH_EXTENDED_DATA);
if(LIBSSH2_ERROR_EAGAIN == rc)
return rc;
}
}
channel->extData2_state = libssh2_NB_state_idle;
return 0;
}
/*
* libssh2_channel_handle_extended_data2()
*
*/
LIBSSH2_API int
libssh2_channel_handle_extended_data2(LIBSSH2_CHANNEL *channel,
int mode)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session, _libssh2_channel_extended_data(channel,
mode));
return rc;
}
/*
* libssh2_channel_handle_extended_data
*
* DEPRECATED DO NOTE USE!
*
* How should extended data look to the calling app? Keep it in separate
* channels[_read() _read_stdder()]? (NORMAL) Merge the extended data to the
* standard data? [everything via _read()]? (MERGE) Ignore it entirely [toss
* out packets as they come in]? (IGNORE)
*/
LIBSSH2_API void
libssh2_channel_handle_extended_data(LIBSSH2_CHANNEL *channel,
int ignore_mode)
{
(void)libssh2_channel_handle_extended_data2(channel, ignore_mode);
}
/*
* _libssh2_channel_read
*
* Read data from a channel
*
* It is important to not return 0 until the currently read channel is
* complete. If we read stuff from the wire but it was no payload data to fill
* in the buffer with, we MUST make sure to return LIBSSH2_ERROR_EAGAIN.
*
* The receive window must be maintained (enlarged) by the user of this
* function.
*/
ssize_t _libssh2_channel_read(LIBSSH2_CHANNEL *channel, int stream_id,
char *buf, size_t buflen)
{
LIBSSH2_SESSION *session = channel->session;
int rc;
size_t bytes_read = 0;
size_t bytes_want;
int unlink_packet;
LIBSSH2_PACKET *read_packet;
LIBSSH2_PACKET *read_next;
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"channel_read() wants %d bytes from channel %lu/%lu "
"stream #%d",
(int) buflen, channel->local.id, channel->remote.id,
stream_id);
/* expand the receiving window first if it has become too narrow */
if((channel->read_state == libssh2_NB_state_jump1) ||
(channel->remote.window_size <
channel->remote.window_size_initial / 4 * 3 + buflen) ) {
uint32_t adjustment = channel->remote.window_size_initial + buflen -
channel->remote.window_size;
if(adjustment < LIBSSH2_CHANNEL_MINADJUST)
adjustment = LIBSSH2_CHANNEL_MINADJUST;
/* the actual window adjusting may not finish so we need to deal with
this special state here */
channel->read_state = libssh2_NB_state_jump1;
rc = _libssh2_channel_receive_window_adjust(channel, adjustment,
0, NULL);
if(rc)
return rc;
channel->read_state = libssh2_NB_state_idle;
}
/* Process all pending incoming packets. Tests prove that this way
produces faster transfers. */
do {
rc = _libssh2_transport_read(session);
} while(rc > 0);
if((rc < 0) && (rc != LIBSSH2_ERROR_EAGAIN))
return _libssh2_error(session, rc, "transport read");
read_packet = _libssh2_list_first(&session->packets);
while(read_packet && (bytes_read < buflen)) {
/* previously this loop condition also checked for
!channel->remote.close but we cannot let it do this:
We may have a series of packets to read that are still pending even
if a close has been received. Acknowledging the close too early
makes us flush buffers prematurely and loose data.
*/
LIBSSH2_PACKET *readpkt = read_packet;
/* In case packet gets destroyed during this iteration */
read_next = _libssh2_list_next(&readpkt->node);
if(readpkt->data_len < 5) {
read_packet = read_next;
_libssh2_debug(channel->session, LIBSSH2_TRACE_ERROR,
"Unexpected packet length");
continue;
}
channel->read_local_id =
_libssh2_ntohu32(readpkt->data + 1);
/*
* Either we asked for a specific extended data stream
* (and data was available),
* or the standard stream (and data was available),
* or the standard stream with extended_data_merge
* enabled and data was available
*/
if((stream_id
&& (readpkt->data[0] == SSH_MSG_CHANNEL_EXTENDED_DATA)
&& (channel->local.id == channel->read_local_id)
&& (readpkt->data_len >= 9)
&& (stream_id == (int) _libssh2_ntohu32(readpkt->data + 5)))
|| (!stream_id && (readpkt->data[0] == SSH_MSG_CHANNEL_DATA)
&& (channel->local.id == channel->read_local_id))
|| (!stream_id
&& (readpkt->data[0] == SSH_MSG_CHANNEL_EXTENDED_DATA)
&& (channel->local.id == channel->read_local_id)
&& (channel->remote.extended_data_ignore_mode ==
LIBSSH2_CHANNEL_EXTENDED_DATA_MERGE))) {
/* figure out much more data we want to read */
bytes_want = buflen - bytes_read;
unlink_packet = FALSE;
if(bytes_want >= (readpkt->data_len - readpkt->data_head)) {
/* we want more than this node keeps, so adjust the number and
delete this node after the copy */
bytes_want = readpkt->data_len - readpkt->data_head;
unlink_packet = TRUE;
}
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"channel_read() got %d of data from %lu/%lu/%d%s",
bytes_want, channel->local.id,
channel->remote.id, stream_id,
unlink_packet?" [ul]":"");
/* copy data from this struct to the target buffer */
memcpy(&buf[bytes_read],
&readpkt->data[readpkt->data_head], bytes_want);
/* advance pointer and counter */
readpkt->data_head += bytes_want;
bytes_read += bytes_want;
/* if drained, remove from list */
if(unlink_packet) {
/* detach readpkt from session->packets list */
_libssh2_list_remove(&readpkt->node);
LIBSSH2_FREE(session, readpkt->data);
LIBSSH2_FREE(session, readpkt);
}
}
/* check the next struct in the chain */
read_packet = read_next;
}
if(!bytes_read) {
/* If the channel is already at EOF or even closed, we need to signal
that back. We may have gotten that info while draining the incoming
transport layer until EAGAIN so we must not be fooled by that
return code. */
if(channel->remote.eof || channel->remote.close)
return 0;
else if(rc != LIBSSH2_ERROR_EAGAIN)
return 0;
/* if the transport layer said EAGAIN then we say so as well */
return _libssh2_error(session, rc, "would block");
}
channel->read_avail -= bytes_read;
channel->remote.window_size -= bytes_read;
return bytes_read;
}
/*
* libssh2_channel_read_ex
*
* Read data from a channel (blocking or non-blocking depending on set state)
*
* When this is done non-blocking, it is important to not return 0 until the
* currently read channel is complete. If we read stuff from the wire but it
* was no payload data to fill in the buffer with, we MUST make sure to return
* LIBSSH2_ERROR_EAGAIN.
*
* This function will first make sure there's a receive window enough to
* receive a full buffer's wort of contents. An application may choose to
* adjust the receive window more to increase transfer performance.
*/
LIBSSH2_API ssize_t
libssh2_channel_read_ex(LIBSSH2_CHANNEL *channel, int stream_id, char *buf,
size_t buflen)
{
int rc;
unsigned long recv_window;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
recv_window = libssh2_channel_window_read_ex(channel, NULL, NULL);
if(buflen > recv_window) {
BLOCK_ADJUST(rc, channel->session,
_libssh2_channel_receive_window_adjust(channel, buflen,
1, NULL));
}
BLOCK_ADJUST(rc, channel->session,
_libssh2_channel_read(channel, stream_id, buf, buflen));
return rc;
}
/*
* _libssh2_channel_packet_data_len
*
* Return the size of the data block of the current packet, or 0 if there
* isn't a packet.
*/
size_t
_libssh2_channel_packet_data_len(LIBSSH2_CHANNEL * channel, int stream_id)
{
LIBSSH2_SESSION *session = channel->session;
LIBSSH2_PACKET *read_packet;
LIBSSH2_PACKET *next_packet;
uint32_t read_local_id;
read_packet = _libssh2_list_first(&session->packets);
if(read_packet == NULL)
return 0;
while(read_packet) {
next_packet = _libssh2_list_next(&read_packet->node);
if(read_packet->data_len < 5) {
read_packet = next_packet;
_libssh2_debug(channel->session, LIBSSH2_TRACE_ERROR,
"Unexpected packet length");
continue;
}
read_local_id = _libssh2_ntohu32(read_packet->data + 1);
/*
* Either we asked for a specific extended data stream
* (and data was available),
* or the standard stream (and data was available),
* or the standard stream with extended_data_merge
* enabled and data was available
*/
if((stream_id
&& (read_packet->data[0] == SSH_MSG_CHANNEL_EXTENDED_DATA)
&& (channel->local.id == read_local_id)
&& (read_packet->data_len >= 9)
&& (stream_id == (int) _libssh2_ntohu32(read_packet->data + 5)))
||
(!stream_id
&& (read_packet->data[0] == SSH_MSG_CHANNEL_DATA)
&& (channel->local.id == read_local_id))
||
(!stream_id
&& (read_packet->data[0] == SSH_MSG_CHANNEL_EXTENDED_DATA)
&& (channel->local.id == read_local_id)
&& (channel->remote.extended_data_ignore_mode
== LIBSSH2_CHANNEL_EXTENDED_DATA_MERGE))) {
return (read_packet->data_len - read_packet->data_head);
}
read_packet = next_packet;
}
return 0;
}
/*
* _libssh2_channel_write
*
* Send data to a channel. Note that if this returns EAGAIN, the caller must
* call this function again with the SAME input arguments.
*
* Returns: number of bytes sent, or if it returns a negative number, that is
* the error code!
*/
ssize_t
_libssh2_channel_write(LIBSSH2_CHANNEL *channel, int stream_id,
const unsigned char *buf, size_t buflen)
{
int rc = 0;
LIBSSH2_SESSION *session = channel->session;
ssize_t wrote = 0; /* counter for this specific this call */
/* In theory we could split larger buffers into several smaller packets
* but it turns out to be really hard and nasty to do while still offering
* the API/prototype.
*
* Instead we only deal with the first 32K in this call and for the parent
* function to call it again with the remainder! 32K is a conservative
* limit based on the text in RFC4253 section 6.1.
*/
if(buflen > 32700)
buflen = 32700;
if(channel->write_state == libssh2_NB_state_idle) {
unsigned char *s = channel->write_packet;
_libssh2_debug(channel->session, LIBSSH2_TRACE_CONN,
"Writing %d bytes on channel %lu/%lu, stream #%d",
(int) buflen, channel->local.id, channel->remote.id,
stream_id);
if(channel->local.close)
return _libssh2_error(channel->session,
LIBSSH2_ERROR_CHANNEL_CLOSED,
"We've already closed this channel");
else if(channel->local.eof)
return _libssh2_error(channel->session,
LIBSSH2_ERROR_CHANNEL_EOF_SENT,
"EOF has already been received, "
"data might be ignored");
/* drain the incoming flow first, mostly to make sure we get all
* pending window adjust packets */
do
rc = _libssh2_transport_read(session);
while(rc > 0);
if((rc < 0) && (rc != LIBSSH2_ERROR_EAGAIN)) {
return _libssh2_error(channel->session, rc,
"Failure while draining incoming flow");
}
if(channel->local.window_size <= 0) {
/* there's no room for data so we stop */
/* Waiting on the socket to be writable would be wrong because we
* would be back here immediately, but a readable socket might
* herald an incoming window adjustment.
*/
session->socket_block_directions = LIBSSH2_SESSION_BLOCK_INBOUND;
return (rc == LIBSSH2_ERROR_EAGAIN?rc:0);
}
channel->write_bufwrite = buflen;
*(s++) = stream_id ? SSH_MSG_CHANNEL_EXTENDED_DATA :
SSH_MSG_CHANNEL_DATA;
_libssh2_store_u32(&s, channel->remote.id);
if(stream_id)
_libssh2_store_u32(&s, stream_id);
/* Don't exceed the remote end's limits */
/* REMEMBER local means local as the SOURCE of the data */
if(channel->write_bufwrite > channel->local.window_size) {
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Splitting write block due to %lu byte "
"window_size on %lu/%lu/%d",
channel->local.window_size, channel->local.id,
channel->remote.id, stream_id);
channel->write_bufwrite = channel->local.window_size;
}
if(channel->write_bufwrite > channel->local.packet_size) {
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Splitting write block due to %lu byte "
"packet_size on %lu/%lu/%d",
channel->local.packet_size, channel->local.id,
channel->remote.id, stream_id);
channel->write_bufwrite = channel->local.packet_size;
}
/* store the size here only, the buffer is passed in as-is to
_libssh2_transport_send() */
_libssh2_store_u32(&s, channel->write_bufwrite);
channel->write_packet_len = s - channel->write_packet;
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Sending %d bytes on channel %lu/%lu, stream_id=%d",
(int) channel->write_bufwrite, channel->local.id,
channel->remote.id, stream_id);
channel->write_state = libssh2_NB_state_created;
}
if(channel->write_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, channel->write_packet,
channel->write_packet_len,
buf, channel->write_bufwrite);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return _libssh2_error(session, rc,
"Unable to send channel data");
}
else if(rc) {
channel->write_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Unable to send channel data");
}
/* Shrink local window size */
channel->local.window_size -= channel->write_bufwrite;
wrote += channel->write_bufwrite;
/* Since _libssh2_transport_write() succeeded, we must return
now to allow the caller to provide the next chunk of data.
We cannot move on to send the next piece of data that may
already have been provided in this same function call, as we
risk getting EAGAIN for that and we can't return information
both about sent data as well as EAGAIN. So, by returning short
now, the caller will call this function again with new data to
send */
channel->write_state = libssh2_NB_state_idle;
return wrote;
}
return LIBSSH2_ERROR_INVAL; /* reaching this point is really bad */
}
/*
* libssh2_channel_write_ex
*
* Send data to a channel
*/
LIBSSH2_API ssize_t
libssh2_channel_write_ex(LIBSSH2_CHANNEL *channel, int stream_id,
const char *buf, size_t buflen)
{
ssize_t rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session,
_libssh2_channel_write(channel, stream_id,
(unsigned char *)buf, buflen));
return rc;
}
/*
* channel_send_eof
*
* Send EOF on channel
*/
static int channel_send_eof(LIBSSH2_CHANNEL *channel)
{
LIBSSH2_SESSION *session = channel->session;
unsigned char packet[5]; /* packet_type(1) + channelno(4) */
int rc;
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Sending EOF on channel %lu/%lu",
channel->local.id, channel->remote.id);
packet[0] = SSH_MSG_CHANNEL_EOF;
_libssh2_htonu32(packet + 1, channel->remote.id);
rc = _libssh2_transport_send(session, packet, 5, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, rc,
"Would block sending EOF");
return rc;
}
else if(rc) {
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send EOF on channel");
}
channel->local.eof = 1;
return 0;
}
/*
* libssh2_channel_send_eof
*
* Send EOF on channel
*/
LIBSSH2_API int
libssh2_channel_send_eof(LIBSSH2_CHANNEL *channel)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session, channel_send_eof(channel));
return rc;
}
/*
* libssh2_channel_eof
*
* Read channel's eof status
*/
LIBSSH2_API int
libssh2_channel_eof(LIBSSH2_CHANNEL * channel)
{
LIBSSH2_SESSION *session;
LIBSSH2_PACKET *packet;
LIBSSH2_PACKET *next_packet;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
session = channel->session;
packet = _libssh2_list_first(&session->packets);
while(packet) {
next_packet = _libssh2_list_next(&packet->node);
if(packet->data_len < 1) {
packet = next_packet;
_libssh2_debug(channel->session, LIBSSH2_TRACE_ERROR,
"Unexpected packet length");
continue;
}
if(((packet->data[0] == SSH_MSG_CHANNEL_DATA)
|| (packet->data[0] == SSH_MSG_CHANNEL_EXTENDED_DATA))
&& ((packet->data_len >= 5)
&& (channel->local.id == _libssh2_ntohu32(packet->data + 1)))) {
/* There's data waiting to be read yet, mask the EOF status */
return 0;
}
packet = next_packet;
}
return channel->remote.eof;
}
/*
* channel_wait_eof
*
* Awaiting channel EOF
*/
static int channel_wait_eof(LIBSSH2_CHANNEL *channel)
{
LIBSSH2_SESSION *session = channel->session;
int rc;
if(channel->wait_eof_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Awaiting EOF for channel %lu/%lu", channel->local.id,
channel->remote.id);
channel->wait_eof_state = libssh2_NB_state_created;
}
/*
* While channel is not eof, read more packets from the network.
* Either the EOF will be set or network timeout will occur.
*/
do {
if(channel->remote.eof) {
break;
}
if((channel->remote.window_size == channel->read_avail) &&
session->api_block_mode)
return _libssh2_error(session, LIBSSH2_ERROR_CHANNEL_WINDOW_FULL,
"Receiving channel window "
"has been exhausted");
rc = _libssh2_transport_read(session);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc < 0) {
channel->wait_eof_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"_libssh2_transport_read() bailed out!");
}
} while(1);
channel->wait_eof_state = libssh2_NB_state_idle;
return 0;
}
/*
* libssh2_channel_wait_eof
*
* Awaiting channel EOF
*/
LIBSSH2_API int
libssh2_channel_wait_eof(LIBSSH2_CHANNEL *channel)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session, channel_wait_eof(channel));
return rc;
}
int _libssh2_channel_close(LIBSSH2_CHANNEL * channel)
{
LIBSSH2_SESSION *session = channel->session;
int rc = 0;
if(channel->local.close) {
/* Already closed, act like we sent another close,
* even though we didn't... shhhhhh */
channel->close_state = libssh2_NB_state_idle;
return 0;
}
if(!channel->local.eof) {
rc = channel_send_eof(channel);
if(rc) {
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
_libssh2_error(session, rc,
"Unable to send EOF, but closing channel anyway");
}
}
/* ignore if we have received a remote eof or not, as it is now too
late for us to wait for it. Continue closing! */
if(channel->close_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_CONN, "Closing channel %lu/%lu",
channel->local.id, channel->remote.id);
channel->close_packet[0] = SSH_MSG_CHANNEL_CLOSE;
_libssh2_htonu32(channel->close_packet + 1, channel->remote.id);
channel->close_state = libssh2_NB_state_created;
}
if(channel->close_state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, channel->close_packet, 5,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, rc,
"Would block sending close-channel");
return rc;
}
else if(rc) {
_libssh2_error(session, rc,
"Unable to send close-channel request, "
"but closing anyway");
/* skip waiting for the response and fall through to
LIBSSH2_CHANNEL_CLOSE below */
}
else
channel->close_state = libssh2_NB_state_sent;
}
if(channel->close_state == libssh2_NB_state_sent) {
/* We must wait for the remote SSH_MSG_CHANNEL_CLOSE message */
while(!channel->remote.close && !rc &&
(session->socket_state != LIBSSH2_SOCKET_DISCONNECTED))
rc = _libssh2_transport_read(session);
}
if(rc != LIBSSH2_ERROR_EAGAIN) {
/* set the local close state first when we're perfectly confirmed to
not do any more EAGAINs */
channel->local.close = 1;
/* We call the callback last in this function to make it keep the local
data as long as EAGAIN is returned. */
if(channel->close_cb) {
LIBSSH2_CHANNEL_CLOSE(session, channel);
}
channel->close_state = libssh2_NB_state_idle;
}
/* return 0 or an error */
return rc >= 0 ? 0 : rc;
}
/*
* libssh2_channel_close
*
* Close a channel
*/
LIBSSH2_API int
libssh2_channel_close(LIBSSH2_CHANNEL *channel)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session, _libssh2_channel_close(channel) );
return rc;
}
/*
* channel_wait_closed
*
* Awaiting channel close after EOF
*/
static int channel_wait_closed(LIBSSH2_CHANNEL *channel)
{
LIBSSH2_SESSION *session = channel->session;
int rc;
if(!channel->remote.eof) {
return _libssh2_error(session, LIBSSH2_ERROR_INVAL,
"libssh2_channel_wait_closed() invoked when "
"channel is not in EOF state");
}
if(channel->wait_closed_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Awaiting close of channel %lu/%lu", channel->local.id,
channel->remote.id);
channel->wait_closed_state = libssh2_NB_state_created;
}
/*
* While channel is not closed, read more packets from the network.
* Either the channel will be closed or network timeout will occur.
*/
if(!channel->remote.close) {
do {
rc = _libssh2_transport_read(session);
if(channel->remote.close)
/* it is now closed, move on! */
break;
} while(rc > 0);
if(rc < 0)
return rc;
}
channel->wait_closed_state = libssh2_NB_state_idle;
return 0;
}
/*
* libssh2_channel_wait_closed
*
* Awaiting channel close after EOF
*/
LIBSSH2_API int
libssh2_channel_wait_closed(LIBSSH2_CHANNEL *channel)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session, channel_wait_closed(channel));
return rc;
}
/*
* _libssh2_channel_free
*
* Make sure a channel is closed, then remove the channel from the session
* and free its resource(s)
*
* Returns 0 on success, negative on failure
*/
int _libssh2_channel_free(LIBSSH2_CHANNEL *channel)
{
LIBSSH2_SESSION *session = channel->session;
unsigned char channel_id[4];
unsigned char *data;
size_t data_len;
int rc;
assert(session);
if(channel->free_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Freeing channel %lu/%lu resources", channel->local.id,
channel->remote.id);
channel->free_state = libssh2_NB_state_created;
}
/* Allow channel freeing even when the socket has lost its connection */
if(!channel->local.close
&& (session->socket_state == LIBSSH2_SOCKET_CONNECTED)) {
rc = _libssh2_channel_close(channel);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
/* ignore all other errors as they otherwise risk blocking the channel
free from happening */
}
channel->free_state = libssh2_NB_state_idle;
if(channel->exit_signal) {
LIBSSH2_FREE(session, channel->exit_signal);
}
/*
* channel->remote.close *might* not be set yet, Well...
* We've sent the close packet, what more do you want?
* Just let packet_add ignore it when it finally arrives
*/
/* Clear out packets meant for this channel */
_libssh2_htonu32(channel_id, channel->local.id);
while((_libssh2_packet_ask(session, SSH_MSG_CHANNEL_DATA, &data,
&data_len, 1, channel_id, 4) >= 0)
||
(_libssh2_packet_ask(session, SSH_MSG_CHANNEL_EXTENDED_DATA, &data,
&data_len, 1, channel_id, 4) >= 0)) {
LIBSSH2_FREE(session, data);
}
/* free "channel_type" */
if(channel->channel_type) {
LIBSSH2_FREE(session, channel->channel_type);
}
/* Unlink from channel list */
_libssh2_list_remove(&channel->node);
/*
* Make sure all memory used in the state variables are free
*/
if(channel->setenv_packet) {
LIBSSH2_FREE(session, channel->setenv_packet);
}
if(channel->reqX11_packet) {
LIBSSH2_FREE(session, channel->reqX11_packet);
}
if(channel->process_packet) {
LIBSSH2_FREE(session, channel->process_packet);
}
LIBSSH2_FREE(session, channel);
return 0;
}
/*
* libssh2_channel_free
*
* Make sure a channel is closed, then remove the channel from the session
* and free its resource(s)
*
* Returns 0 on success, negative on failure
*/
LIBSSH2_API int
libssh2_channel_free(LIBSSH2_CHANNEL *channel)
{
int rc;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, channel->session, _libssh2_channel_free(channel));
return rc;
}
/*
* libssh2_channel_window_read_ex
*
* Check the status of the read window. Returns the number of bytes which the
* remote end may send without overflowing the window limit read_avail (if
* passed) will be populated with the number of bytes actually available to be
* read window_size_initial (if passed) will be populated with the
* window_size_initial as defined by the channel_open request
*/
LIBSSH2_API unsigned long
libssh2_channel_window_read_ex(LIBSSH2_CHANNEL *channel,
unsigned long *read_avail,
unsigned long *window_size_initial)
{
if(!channel)
return 0; /* no channel, no window! */
if(window_size_initial) {
*window_size_initial = channel->remote.window_size_initial;
}
if(read_avail) {
size_t bytes_queued = 0;
LIBSSH2_PACKET *next_packet;
LIBSSH2_PACKET *packet =
_libssh2_list_first(&channel->session->packets);
while(packet) {
unsigned char packet_type;
next_packet = _libssh2_list_next(&packet->node);
if(packet->data_len < 1) {
packet = next_packet;
_libssh2_debug(channel->session, LIBSSH2_TRACE_ERROR,
"Unexpected packet length");
continue;
}
packet_type = packet->data[0];
if(((packet_type == SSH_MSG_CHANNEL_DATA)
|| (packet_type == SSH_MSG_CHANNEL_EXTENDED_DATA))
&& ((packet->data_len >= 5)
&& (_libssh2_ntohu32(packet->data + 1) ==
channel->local.id))) {
bytes_queued += packet->data_len - packet->data_head;
}
packet = next_packet;
}
*read_avail = bytes_queued;
}
return channel->remote.window_size;
}
/*
* libssh2_channel_window_write_ex
*
* Check the status of the write window Returns the number of bytes which may
* be safely written on the channel without blocking window_size_initial (if
* passed) will be populated with the size of the initial window as defined by
* the channel_open request
*/
LIBSSH2_API unsigned long
libssh2_channel_window_write_ex(LIBSSH2_CHANNEL *channel,
unsigned long *window_size_initial)
{
if(!channel)
return 0; /* no channel, no window! */
if(window_size_initial) {
/* For locally initiated channels this is very often 0, so it's not
* *that* useful as information goes */
*window_size_initial = channel->local.window_size_initial;
}
return channel->local.window_size;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/kex.c | /* Copyright (c) 2004-2007, Sara Golemon <[email protected]>
* Copyright (c) 2010-2019, Daniel Stenberg <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include "transport.h"
#include "comp.h"
#include "mac.h"
#include <assert.h>
/* define SHA1_DIGEST_LENGTH for the macro below */
#ifndef SHA1_DIGEST_LENGTH
#define SHA1_DIGEST_LENGTH SHA_DIGEST_LENGTH
#endif
/* TODO: Switch this to an inline and handle alloc() failures */
/* Helper macro called from
kex_method_diffie_hellman_group1_sha1_key_exchange */
#define LIBSSH2_KEX_METHOD_EC_SHA_VALUE_HASH(value, reqlen, version) \
{ \
if(type == LIBSSH2_EC_CURVE_NISTP256) { \
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(256, value, reqlen, version); \
} \
else if(type == LIBSSH2_EC_CURVE_NISTP384) { \
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(384, value, reqlen, version); \
} \
else if(type == LIBSSH2_EC_CURVE_NISTP521) { \
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(512, value, reqlen, version); \
} \
} \
#define LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(digest_type, value, \
reqlen, version) \
{ \
libssh2_sha##digest_type##_ctx hash; \
unsigned long len = 0; \
if(!(value)) { \
value = LIBSSH2_ALLOC(session, \
reqlen + SHA##digest_type##_DIGEST_LENGTH); \
} \
if(value) \
while(len < (unsigned long)reqlen) { \
(void)libssh2_sha##digest_type##_init(&hash); \
libssh2_sha##digest_type##_update(hash, \
exchange_state->k_value, \
exchange_state->k_value_len); \
libssh2_sha##digest_type##_update(hash, \
exchange_state->h_sig_comp, \
SHA##digest_type##_DIGEST_LENGTH); \
if(len > 0) { \
libssh2_sha##digest_type##_update(hash, value, len); \
} \
else { \
libssh2_sha##digest_type##_update(hash, (version), 1); \
libssh2_sha##digest_type##_update(hash, session->session_id,\
session->session_id_len); \
} \
libssh2_sha##digest_type##_final(hash, (value) + len); \
len += SHA##digest_type##_DIGEST_LENGTH; \
} \
}
/*!
* @note The following are wrapper functions used by diffie_hellman_sha_algo().
* TODO: Switch backend SHA macros to functions to allow function pointers
* @discussion Ideally these would be function pointers but the backend macros
* don't allow it so we have to wrap them up in helper functions
*/
static void _libssh2_sha_algo_ctx_init(int sha_algo, void *ctx)
{
if(sha_algo == 512) {
(void)libssh2_sha512_init((libssh2_sha512_ctx*)ctx);
}
else if(sha_algo == 384) {
(void)libssh2_sha384_init((libssh2_sha384_ctx*)ctx);
}
else if(sha_algo == 256) {
(void)libssh2_sha256_init((libssh2_sha256_ctx*)ctx);
}
else if(sha_algo == 1) {
(void)libssh2_sha1_init((libssh2_sha1_ctx*)ctx);
}
else {
assert(0);
}
}
static void _libssh2_sha_algo_ctx_update(int sha_algo, void *ctx,
void *data, size_t len)
{
if(sha_algo == 512) {
libssh2_sha512_ctx *_ctx = (libssh2_sha512_ctx*)ctx;
libssh2_sha512_update(*_ctx, data, len);
}
else if(sha_algo == 384) {
libssh2_sha384_ctx *_ctx = (libssh2_sha384_ctx*)ctx;
libssh2_sha384_update(*_ctx, data, len);
}
else if(sha_algo == 256) {
libssh2_sha256_ctx *_ctx = (libssh2_sha256_ctx*)ctx;
libssh2_sha256_update(*_ctx, data, len);
}
else if(sha_algo == 1) {
libssh2_sha1_ctx *_ctx = (libssh2_sha1_ctx*)ctx;
libssh2_sha1_update(*_ctx, data, len);
}
else {
#if LIBSSH2DEBUG
assert(0);
#endif
}
}
static void _libssh2_sha_algo_ctx_final(int sha_algo, void *ctx,
void *hash)
{
if(sha_algo == 512) {
libssh2_sha512_ctx *_ctx = (libssh2_sha512_ctx*)ctx;
libssh2_sha512_final(*_ctx, hash);
}
else if(sha_algo == 384) {
libssh2_sha384_ctx *_ctx = (libssh2_sha384_ctx*)ctx;
libssh2_sha384_final(*_ctx, hash);
}
else if(sha_algo == 256) {
libssh2_sha256_ctx *_ctx = (libssh2_sha256_ctx*)ctx;
libssh2_sha256_final(*_ctx, hash);
}
else if(sha_algo == 1) {
libssh2_sha1_ctx *_ctx = (libssh2_sha1_ctx*)ctx;
libssh2_sha1_final(*_ctx, hash);
}
else {
#if LIBSSH2DEBUG
assert(0);
#endif
}
}
static void _libssh2_sha_algo_value_hash(int sha_algo,
LIBSSH2_SESSION *session,
kmdhgGPshakex_state_t *exchange_state,
unsigned char **data, size_t data_len,
const unsigned char *version)
{
if(sha_algo == 512) {
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(512, *data, data_len, version);
}
else if(sha_algo == 384) {
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(384, *data, data_len, version);
}
else if(sha_algo == 256) {
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(256, *data, data_len, version);
}
else if(sha_algo == 1) {
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(1, *data, data_len, version);
}
else {
#if LIBSSH2DEBUG
assert(0);
#endif
}
}
/*!
* @function diffie_hellman_sha_algo
* @abstract Diffie Hellman Key Exchange, Group Agnostic,
* SHA Algorithm Agnostic
* @result 0 on success, error code on failure
*/
static int diffie_hellman_sha_algo(LIBSSH2_SESSION *session,
_libssh2_bn *g,
_libssh2_bn *p,
int group_order,
int sha_algo_value,
void *exchange_hash_ctx,
unsigned char packet_type_init,
unsigned char packet_type_reply,
unsigned char *midhash,
unsigned long midhash_len,
kmdhgGPshakex_state_t *exchange_state)
{
int ret = 0;
int rc;
int digest_len = 0;
if(sha_algo_value == 512)
digest_len = SHA512_DIGEST_LENGTH;
else if(sha_algo_value == 384)
digest_len = SHA384_DIGEST_LENGTH;
else if(sha_algo_value == 256)
digest_len = SHA256_DIGEST_LENGTH;
else if(sha_algo_value == 1)
digest_len = SHA1_DIGEST_LENGTH;
else {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"sha algo value is unimplemented");
goto clean_exit;
}
if(exchange_state->state == libssh2_NB_state_idle) {
/* Setup initial values */
exchange_state->e_packet = NULL;
exchange_state->s_packet = NULL;
exchange_state->k_value = NULL;
exchange_state->ctx = _libssh2_bn_ctx_new();
libssh2_dh_init(&exchange_state->x);
exchange_state->e = _libssh2_bn_init(); /* g^x mod p */
exchange_state->f = _libssh2_bn_init_from_bin(); /* g^(Random from
server) mod p */
exchange_state->k = _libssh2_bn_init(); /* The shared secret: f^x mod
p */
/* Zero the whole thing out */
memset(&exchange_state->req_state, 0, sizeof(packet_require_state_t));
/* Generate x and e */
if(_libssh2_bn_bits(p) > LIBSSH2_DH_MAX_MODULUS_BITS) {
ret = _libssh2_error(session, LIBSSH2_ERROR_INVAL,
"dh modulus value is too large");
goto clean_exit;
}
rc = libssh2_dh_key_pair(&exchange_state->x, exchange_state->e, g, p,
group_order, exchange_state->ctx);
if(rc)
goto clean_exit;
/* Send KEX init */
/* packet_type(1) + String Length(4) + leading 0(1) */
exchange_state->e_packet_len =
_libssh2_bn_bytes(exchange_state->e) + 6;
if(_libssh2_bn_bits(exchange_state->e) % 8) {
/* Leading 00 not needed */
exchange_state->e_packet_len--;
}
exchange_state->e_packet =
LIBSSH2_ALLOC(session, exchange_state->e_packet_len);
if(!exchange_state->e_packet) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Out of memory error");
goto clean_exit;
}
exchange_state->e_packet[0] = packet_type_init;
_libssh2_htonu32(exchange_state->e_packet + 1,
exchange_state->e_packet_len - 5);
if(_libssh2_bn_bits(exchange_state->e) % 8) {
_libssh2_bn_to_bin(exchange_state->e,
exchange_state->e_packet + 5);
}
else {
exchange_state->e_packet[5] = 0;
_libssh2_bn_to_bin(exchange_state->e,
exchange_state->e_packet + 6);
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Sending KEX packet %d",
(int) packet_type_init);
exchange_state->state = libssh2_NB_state_created;
}
if(exchange_state->state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, exchange_state->e_packet,
exchange_state->e_packet_len,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc,
"Unable to send KEX init message");
goto clean_exit;
}
exchange_state->state = libssh2_NB_state_sent;
}
if(exchange_state->state == libssh2_NB_state_sent) {
if(session->burn_optimistic_kexinit) {
/* The first KEX packet to come along will be the guess initially
* sent by the server. That guess turned out to be wrong so we
* need to silently ignore it */
int burn_type;
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Waiting for badly guessed KEX packet "
"(to be ignored)");
burn_type =
_libssh2_packet_burn(session, &exchange_state->burn_state);
if(burn_type == LIBSSH2_ERROR_EAGAIN) {
return burn_type;
}
else if(burn_type <= 0) {
/* Failed to receive a packet */
ret = burn_type;
goto clean_exit;
}
session->burn_optimistic_kexinit = 0;
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Burnt packet of type: %02x",
(unsigned int) burn_type);
}
exchange_state->state = libssh2_NB_state_sent1;
}
if(exchange_state->state == libssh2_NB_state_sent1) {
/* Wait for KEX reply */
struct string_buf buf;
size_t host_key_len;
rc = _libssh2_packet_require(session, packet_type_reply,
&exchange_state->s_packet,
&exchange_state->s_packet_len, 0, NULL,
0, &exchange_state->req_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
if(rc) {
ret = _libssh2_error(session, LIBSSH2_ERROR_TIMEOUT,
"Timed out waiting for KEX reply");
goto clean_exit;
}
/* Parse KEXDH_REPLY */
if(exchange_state->s_packet_len < 5) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected packet length");
goto clean_exit;
}
buf.data = exchange_state->s_packet;
buf.len = exchange_state->s_packet_len;
buf.dataptr = buf.data;
buf.dataptr++; /* advance past type */
if(session->server_hostkey)
LIBSSH2_FREE(session, session->server_hostkey);
if(_libssh2_copy_string(session, &buf, &(session->server_hostkey),
&host_key_len)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Could not copy host key");
goto clean_exit;
}
session->server_hostkey_len = (uint32_t)host_key_len;
#if LIBSSH2_MD5
{
libssh2_md5_ctx fingerprint_ctx;
if(libssh2_md5_init(&fingerprint_ctx)) {
libssh2_md5_update(fingerprint_ctx, session->server_hostkey,
session->server_hostkey_len);
libssh2_md5_final(fingerprint_ctx,
session->server_hostkey_md5);
session->server_hostkey_md5_valid = TRUE;
}
else {
session->server_hostkey_md5_valid = FALSE;
}
}
#ifdef LIBSSH2DEBUG
{
char fingerprint[50], *fprint = fingerprint;
int i;
for(i = 0; i < 16; i++, fprint += 3) {
snprintf(fprint, 4, "%02x:", session->server_hostkey_md5[i]);
}
*(--fprint) = '\0';
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server's MD5 Fingerprint: %s", fingerprint);
}
#endif /* LIBSSH2DEBUG */
#endif /* ! LIBSSH2_MD5 */
{
libssh2_sha1_ctx fingerprint_ctx;
if(libssh2_sha1_init(&fingerprint_ctx)) {
libssh2_sha1_update(fingerprint_ctx, session->server_hostkey,
session->server_hostkey_len);
libssh2_sha1_final(fingerprint_ctx,
session->server_hostkey_sha1);
session->server_hostkey_sha1_valid = TRUE;
}
else {
session->server_hostkey_sha1_valid = FALSE;
}
}
#ifdef LIBSSH2DEBUG
{
char fingerprint[64], *fprint = fingerprint;
int i;
for(i = 0; i < 20; i++, fprint += 3) {
snprintf(fprint, 4, "%02x:", session->server_hostkey_sha1[i]);
}
*(--fprint) = '\0';
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server's SHA1 Fingerprint: %s", fingerprint);
}
#endif /* LIBSSH2DEBUG */
{
libssh2_sha256_ctx fingerprint_ctx;
if(libssh2_sha256_init(&fingerprint_ctx)) {
libssh2_sha256_update(fingerprint_ctx, session->server_hostkey,
session->server_hostkey_len);
libssh2_sha256_final(fingerprint_ctx,
session->server_hostkey_sha256);
session->server_hostkey_sha256_valid = TRUE;
}
else {
session->server_hostkey_sha256_valid = FALSE;
}
}
#ifdef LIBSSH2DEBUG
{
char *base64Fingerprint = NULL;
_libssh2_base64_encode(session,
(const char *)
session->server_hostkey_sha256,
SHA256_DIGEST_LENGTH, &base64Fingerprint);
if(base64Fingerprint != NULL) {
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server's SHA256 Fingerprint: %s",
base64Fingerprint);
LIBSSH2_FREE(session, base64Fingerprint);
}
}
#endif /* LIBSSH2DEBUG */
if(session->hostkey->init(session, session->server_hostkey,
session->server_hostkey_len,
&session->server_hostkey_abstract)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_INIT,
"Unable to initialize hostkey importer");
goto clean_exit;
}
if(_libssh2_get_string(&buf, &(exchange_state->f_value),
&(exchange_state->f_value_len))) {
ret = _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_INIT,
"Unable to get f value");
goto clean_exit;
}
_libssh2_bn_from_bin(exchange_state->f, exchange_state->f_value_len,
exchange_state->f_value);
if(_libssh2_get_string(&buf, &(exchange_state->h_sig),
&(exchange_state->h_sig_len))) {
ret = _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_INIT,
"Unable to get h sig");
goto clean_exit;
}
/* Compute the shared secret */
libssh2_dh_secret(&exchange_state->x, exchange_state->k,
exchange_state->f, p, exchange_state->ctx);
exchange_state->k_value_len = _libssh2_bn_bytes(exchange_state->k) + 5;
if(_libssh2_bn_bits(exchange_state->k) % 8) {
/* don't need leading 00 */
exchange_state->k_value_len--;
}
exchange_state->k_value =
LIBSSH2_ALLOC(session, exchange_state->k_value_len);
if(!exchange_state->k_value) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate buffer for K");
goto clean_exit;
}
_libssh2_htonu32(exchange_state->k_value,
exchange_state->k_value_len - 4);
if(_libssh2_bn_bits(exchange_state->k) % 8) {
_libssh2_bn_to_bin(exchange_state->k, exchange_state->k_value + 4);
}
else {
exchange_state->k_value[4] = 0;
_libssh2_bn_to_bin(exchange_state->k, exchange_state->k_value + 5);
}
exchange_state->exchange_hash = (void *)&exchange_hash_ctx;
_libssh2_sha_algo_ctx_init(sha_algo_value, exchange_hash_ctx);
if(session->local.banner) {
_libssh2_htonu32(exchange_state->h_sig_comp,
strlen((char *) session->local.banner) - 2);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
exchange_state->h_sig_comp, 4);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
session->local.banner,
strlen((char *) session->local.banner) - 2);
}
else {
_libssh2_htonu32(exchange_state->h_sig_comp,
sizeof(LIBSSH2_SSH_DEFAULT_BANNER) - 1);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
exchange_state->h_sig_comp, 4);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
(unsigned char *)
LIBSSH2_SSH_DEFAULT_BANNER,
sizeof(LIBSSH2_SSH_DEFAULT_BANNER) - 1);
}
_libssh2_htonu32(exchange_state->h_sig_comp,
strlen((char *) session->remote.banner));
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
exchange_state->h_sig_comp, 4);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
session->remote.banner,
strlen((char *) session->remote.banner));
_libssh2_htonu32(exchange_state->h_sig_comp,
session->local.kexinit_len);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
exchange_state->h_sig_comp, 4);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
session->local.kexinit,
session->local.kexinit_len);
_libssh2_htonu32(exchange_state->h_sig_comp,
session->remote.kexinit_len);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
exchange_state->h_sig_comp, 4);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
session->remote.kexinit,
session->remote.kexinit_len);
_libssh2_htonu32(exchange_state->h_sig_comp,
session->server_hostkey_len);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
exchange_state->h_sig_comp, 4);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
session->server_hostkey,
session->server_hostkey_len);
if(packet_type_init == SSH_MSG_KEX_DH_GEX_INIT) {
/* diffie-hellman-group-exchange hashes additional fields */
#ifdef LIBSSH2_DH_GEX_NEW
_libssh2_htonu32(exchange_state->h_sig_comp,
LIBSSH2_DH_GEX_MINGROUP);
_libssh2_htonu32(exchange_state->h_sig_comp + 4,
LIBSSH2_DH_GEX_OPTGROUP);
_libssh2_htonu32(exchange_state->h_sig_comp + 8,
LIBSSH2_DH_GEX_MAXGROUP);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
exchange_state->h_sig_comp, 12);
#else
_libssh2_htonu32(exchange_state->h_sig_comp,
LIBSSH2_DH_GEX_OPTGROUP);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
exchange_state->h_sig_comp, 4);
#endif
}
if(midhash) {
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
midhash, midhash_len);
}
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
exchange_state->e_packet + 1,
exchange_state->e_packet_len - 1);
_libssh2_htonu32(exchange_state->h_sig_comp,
exchange_state->f_value_len);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
exchange_state->h_sig_comp, 4);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
exchange_state->f_value,
exchange_state->f_value_len);
_libssh2_sha_algo_ctx_update(sha_algo_value, exchange_hash_ctx,
exchange_state->k_value,
exchange_state->k_value_len);
_libssh2_sha_algo_ctx_final(sha_algo_value, exchange_hash_ctx,
exchange_state->h_sig_comp);
if(session->hostkey->
sig_verify(session, exchange_state->h_sig,
exchange_state->h_sig_len, exchange_state->h_sig_comp,
digest_len, &session->server_hostkey_abstract)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_SIGN,
"Unable to verify hostkey signature");
goto clean_exit;
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Sending NEWKEYS message");
exchange_state->c = SSH_MSG_NEWKEYS;
exchange_state->state = libssh2_NB_state_sent2;
}
if(exchange_state->state == libssh2_NB_state_sent2) {
rc = _libssh2_transport_send(session, &exchange_state->c, 1, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc,
"Unable to send NEWKEYS message");
goto clean_exit;
}
exchange_state->state = libssh2_NB_state_sent3;
}
if(exchange_state->state == libssh2_NB_state_sent3) {
rc = _libssh2_packet_require(session, SSH_MSG_NEWKEYS,
&exchange_state->tmp,
&exchange_state->tmp_len, 0, NULL, 0,
&exchange_state->req_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc, "Timed out waiting for NEWKEYS");
goto clean_exit;
}
/* The first key exchange has been performed,
switch to active crypt/comp/mac mode */
session->state |= LIBSSH2_STATE_NEWKEYS;
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Received NEWKEYS message");
/* This will actually end up being just packet_type(1)
for this packet type anyway */
LIBSSH2_FREE(session, exchange_state->tmp);
if(!session->session_id) {
session->session_id = LIBSSH2_ALLOC(session, digest_len);
if(!session->session_id) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate buffer for "
"SHA digest");
goto clean_exit;
}
memcpy(session->session_id, exchange_state->h_sig_comp,
digest_len);
session->session_id_len = digest_len;
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"session_id calculated");
}
/* Cleanup any existing cipher */
if(session->local.crypt->dtor) {
session->local.crypt->dtor(session,
&session->local.crypt_abstract);
}
/* Calculate IV/Secret/Key for each direction */
if(session->local.crypt->init) {
unsigned char *iv = NULL, *secret = NULL;
int free_iv = 0, free_secret = 0;
_libssh2_sha_algo_value_hash(sha_algo_value, session,
exchange_state, &iv,
session->local.crypt->iv_len,
(const unsigned char *)"A");
if(!iv) {
ret = -1;
goto clean_exit;
}
_libssh2_sha_algo_value_hash(sha_algo_value, session,
exchange_state, &secret,
session->local.crypt->secret_len,
(const unsigned char *)"C");
if(!secret) {
LIBSSH2_FREE(session, iv);
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
if(session->local.crypt->
init(session, session->local.crypt, iv, &free_iv, secret,
&free_secret, 1, &session->local.crypt_abstract)) {
LIBSSH2_FREE(session, iv);
LIBSSH2_FREE(session, secret);
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
if(free_iv) {
_libssh2_explicit_zero(iv, session->local.crypt->iv_len);
LIBSSH2_FREE(session, iv);
}
if(free_secret) {
_libssh2_explicit_zero(secret,
session->local.crypt->secret_len);
LIBSSH2_FREE(session, secret);
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Client to Server IV and Key calculated");
if(session->remote.crypt->dtor) {
/* Cleanup any existing cipher */
session->remote.crypt->dtor(session,
&session->remote.crypt_abstract);
}
if(session->remote.crypt->init) {
unsigned char *iv = NULL, *secret = NULL;
int free_iv = 0, free_secret = 0;
_libssh2_sha_algo_value_hash(sha_algo_value, session,
exchange_state, &iv,
session->remote.crypt->iv_len,
(const unsigned char *)"B");
if(!iv) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
_libssh2_sha_algo_value_hash(sha_algo_value, session,
exchange_state, &secret,
session->remote.crypt->secret_len,
(const unsigned char *)"D");
if(!secret) {
LIBSSH2_FREE(session, iv);
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
if(session->remote.crypt->
init(session, session->remote.crypt, iv, &free_iv, secret,
&free_secret, 0, &session->remote.crypt_abstract)) {
LIBSSH2_FREE(session, iv);
LIBSSH2_FREE(session, secret);
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
if(free_iv) {
_libssh2_explicit_zero(iv, session->remote.crypt->iv_len);
LIBSSH2_FREE(session, iv);
}
if(free_secret) {
_libssh2_explicit_zero(secret,
session->remote.crypt->secret_len);
LIBSSH2_FREE(session, secret);
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server to Client IV and Key calculated");
if(session->local.mac->dtor) {
session->local.mac->dtor(session, &session->local.mac_abstract);
}
if(session->local.mac->init) {
unsigned char *key = NULL;
int free_key = 0;
_libssh2_sha_algo_value_hash(sha_algo_value, session,
exchange_state, &key,
session->local.mac->key_len,
(const unsigned char *)"E");
if(!key) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
session->local.mac->init(session, key, &free_key,
&session->local.mac_abstract);
if(free_key) {
_libssh2_explicit_zero(key, session->local.mac->key_len);
LIBSSH2_FREE(session, key);
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Client to Server HMAC Key calculated");
if(session->remote.mac->dtor) {
session->remote.mac->dtor(session, &session->remote.mac_abstract);
}
if(session->remote.mac->init) {
unsigned char *key = NULL;
int free_key = 0;
_libssh2_sha_algo_value_hash(sha_algo_value, session,
exchange_state, &key,
session->remote.mac->key_len,
(const unsigned char *)"F");
if(!key) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
session->remote.mac->init(session, key, &free_key,
&session->remote.mac_abstract);
if(free_key) {
_libssh2_explicit_zero(key, session->remote.mac->key_len);
LIBSSH2_FREE(session, key);
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server to Client HMAC Key calculated");
/* Initialize compression for each direction */
/* Cleanup any existing compression */
if(session->local.comp && session->local.comp->dtor) {
session->local.comp->dtor(session, 1,
&session->local.comp_abstract);
}
if(session->local.comp && session->local.comp->init) {
if(session->local.comp->init(session, 1,
&session->local.comp_abstract)) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Client to Server compression initialized");
if(session->remote.comp && session->remote.comp->dtor) {
session->remote.comp->dtor(session, 0,
&session->remote.comp_abstract);
}
if(session->remote.comp && session->remote.comp->init) {
if(session->remote.comp->init(session, 0,
&session->remote.comp_abstract)) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server to Client compression initialized");
}
clean_exit:
libssh2_dh_dtor(&exchange_state->x);
_libssh2_bn_free(exchange_state->e);
exchange_state->e = NULL;
_libssh2_bn_free(exchange_state->f);
exchange_state->f = NULL;
_libssh2_bn_free(exchange_state->k);
exchange_state->k = NULL;
_libssh2_bn_ctx_free(exchange_state->ctx);
exchange_state->ctx = NULL;
if(exchange_state->e_packet) {
LIBSSH2_FREE(session, exchange_state->e_packet);
exchange_state->e_packet = NULL;
}
if(exchange_state->s_packet) {
LIBSSH2_FREE(session, exchange_state->s_packet);
exchange_state->s_packet = NULL;
}
if(exchange_state->k_value) {
LIBSSH2_FREE(session, exchange_state->k_value);
exchange_state->k_value = NULL;
}
exchange_state->state = libssh2_NB_state_idle;
return ret;
}
/* kex_method_diffie_hellman_group1_sha1_key_exchange
* Diffie-Hellman Group1 (Actually Group2) Key Exchange using SHA1
*/
static int
kex_method_diffie_hellman_group1_sha1_key_exchange(LIBSSH2_SESSION *session,
key_exchange_state_low_t
* key_state)
{
static const unsigned char p_value[128] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xC9, 0x0F, 0xDA, 0xA2, 0x21, 0x68, 0xC2, 0x34,
0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74,
0x02, 0x0B, 0xBE, 0xA6, 0x3B, 0x13, 0x9B, 0x22,
0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD,
0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B,
0x30, 0x2B, 0x0A, 0x6D, 0xF2, 0x5F, 0x14, 0x37,
0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45,
0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6,
0xF4, 0x4C, 0x42, 0xE9, 0xA6, 0x37, 0xED, 0x6B,
0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED,
0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5,
0xAE, 0x9F, 0x24, 0x11, 0x7C, 0x4B, 0x1F, 0xE6,
0x49, 0x28, 0x66, 0x51, 0xEC, 0xE6, 0x53, 0x81,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
int ret;
libssh2_sha1_ctx exchange_hash_ctx;
if(key_state->state == libssh2_NB_state_idle) {
/* g == 2 */
key_state->p = _libssh2_bn_init_from_bin(); /* SSH2 defined value
(p_value) */
key_state->g = _libssh2_bn_init(); /* SSH2 defined value (2) */
/* Initialize P and G */
_libssh2_bn_set_word(key_state->g, 2);
_libssh2_bn_from_bin(key_state->p, 128, p_value);
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Initiating Diffie-Hellman Group1 Key Exchange");
key_state->state = libssh2_NB_state_created;
}
ret = diffie_hellman_sha_algo(session, key_state->g, key_state->p, 128, 1,
(void *)&exchange_hash_ctx,
SSH_MSG_KEXDH_INIT, SSH_MSG_KEXDH_REPLY,
NULL, 0, &key_state->exchange_state);
if(ret == LIBSSH2_ERROR_EAGAIN) {
return ret;
}
_libssh2_bn_free(key_state->p);
key_state->p = NULL;
_libssh2_bn_free(key_state->g);
key_state->g = NULL;
key_state->state = libssh2_NB_state_idle;
return ret;
}
/* kex_method_diffie_hellman_group14_key_exchange
* Diffie-Hellman Group14 Key Exchange with hash function callback
*/
typedef int (*diffie_hellman_hash_func_t)(LIBSSH2_SESSION *,
_libssh2_bn *,
_libssh2_bn *,
int,
int,
void *,
unsigned char,
unsigned char,
unsigned char *,
unsigned long,
kmdhgGPshakex_state_t *);
static int
kex_method_diffie_hellman_group14_key_exchange(LIBSSH2_SESSION *session,
key_exchange_state_low_t
* key_state,
int sha_algo_value,
void *exchange_hash_ctx,
diffie_hellman_hash_func_t
hashfunc)
{
static const unsigned char p_value[256] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xC9, 0x0F, 0xDA, 0xA2, 0x21, 0x68, 0xC2, 0x34,
0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74,
0x02, 0x0B, 0xBE, 0xA6, 0x3B, 0x13, 0x9B, 0x22,
0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD,
0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B,
0x30, 0x2B, 0x0A, 0x6D, 0xF2, 0x5F, 0x14, 0x37,
0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45,
0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6,
0xF4, 0x4C, 0x42, 0xE9, 0xA6, 0x37, 0xED, 0x6B,
0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED,
0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5,
0xAE, 0x9F, 0x24, 0x11, 0x7C, 0x4B, 0x1F, 0xE6,
0x49, 0x28, 0x66, 0x51, 0xEC, 0xE4, 0x5B, 0x3D,
0xC2, 0x00, 0x7C, 0xB8, 0xA1, 0x63, 0xBF, 0x05,
0x98, 0xDA, 0x48, 0x36, 0x1C, 0x55, 0xD3, 0x9A,
0x69, 0x16, 0x3F, 0xA8, 0xFD, 0x24, 0xCF, 0x5F,
0x83, 0x65, 0x5D, 0x23, 0xDC, 0xA3, 0xAD, 0x96,
0x1C, 0x62, 0xF3, 0x56, 0x20, 0x85, 0x52, 0xBB,
0x9E, 0xD5, 0x29, 0x07, 0x70, 0x96, 0x96, 0x6D,
0x67, 0x0C, 0x35, 0x4E, 0x4A, 0xBC, 0x98, 0x04,
0xF1, 0x74, 0x6C, 0x08, 0xCA, 0x18, 0x21, 0x7C,
0x32, 0x90, 0x5E, 0x46, 0x2E, 0x36, 0xCE, 0x3B,
0xE3, 0x9E, 0x77, 0x2C, 0x18, 0x0E, 0x86, 0x03,
0x9B, 0x27, 0x83, 0xA2, 0xEC, 0x07, 0xA2, 0x8F,
0xB5, 0xC5, 0x5D, 0xF0, 0x6F, 0x4C, 0x52, 0xC9,
0xDE, 0x2B, 0xCB, 0xF6, 0x95, 0x58, 0x17, 0x18,
0x39, 0x95, 0x49, 0x7C, 0xEA, 0x95, 0x6A, 0xE5,
0x15, 0xD2, 0x26, 0x18, 0x98, 0xFA, 0x05, 0x10,
0x15, 0x72, 0x8E, 0x5A, 0x8A, 0xAC, 0xAA, 0x68,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
int ret;
if(key_state->state == libssh2_NB_state_idle) {
key_state->p = _libssh2_bn_init_from_bin(); /* SSH2 defined value
(p_value) */
key_state->g = _libssh2_bn_init(); /* SSH2 defined value (2) */
/* g == 2 */
/* Initialize P and G */
_libssh2_bn_set_word(key_state->g, 2);
_libssh2_bn_from_bin(key_state->p, 256, p_value);
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Initiating Diffie-Hellman Group14 Key Exchange");
key_state->state = libssh2_NB_state_created;
}
ret = hashfunc(session, key_state->g, key_state->p,
256, sha_algo_value, exchange_hash_ctx, SSH_MSG_KEXDH_INIT,
SSH_MSG_KEXDH_REPLY, NULL, 0, &key_state->exchange_state);
if(ret == LIBSSH2_ERROR_EAGAIN) {
return ret;
}
key_state->state = libssh2_NB_state_idle;
_libssh2_bn_free(key_state->p);
key_state->p = NULL;
_libssh2_bn_free(key_state->g);
key_state->g = NULL;
return ret;
}
/* kex_method_diffie_hellman_group14_sha1_key_exchange
* Diffie-Hellman Group14 Key Exchange using SHA1
*/
static int
kex_method_diffie_hellman_group14_sha1_key_exchange(LIBSSH2_SESSION *session,
key_exchange_state_low_t
* key_state)
{
libssh2_sha1_ctx ctx;
return kex_method_diffie_hellman_group14_key_exchange(session,
key_state, 1,
&ctx,
diffie_hellman_sha_algo);
}
/* kex_method_diffie_hellman_group14_sha256_key_exchange
* Diffie-Hellman Group14 Key Exchange using SHA256
*/
static int
kex_method_diffie_hellman_group14_sha256_key_exchange(LIBSSH2_SESSION *session,
key_exchange_state_low_t
* key_state)
{
libssh2_sha256_ctx ctx;
return kex_method_diffie_hellman_group14_key_exchange(session,
key_state, 256,
&ctx,
diffie_hellman_sha_algo);
}
/* kex_method_diffie_hellman_group16_sha512_key_exchange
* Diffie-Hellman Group16 Key Exchange using SHA512
*/
static int
kex_method_diffie_hellman_group16_sha512_key_exchange(LIBSSH2_SESSION *session,
key_exchange_state_low_t
* key_state)
{
static const unsigned char p_value[512] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2,
0x21, 0x68, 0xC2, 0x34, 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74, 0x02, 0x0B, 0xBE, 0xA6,
0x3B, 0x13, 0x9B, 0x22, 0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD,
0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B, 0x30, 0x2B, 0x0A, 0x6D,
0xF2, 0x5F, 0x14, 0x37, 0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45,
0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6, 0xF4, 0x4C, 0x42, 0xE9,
0xA6, 0x37, 0xED, 0x6B, 0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED,
0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5, 0xAE, 0x9F, 0x24, 0x11,
0x7C, 0x4B, 0x1F, 0xE6, 0x49, 0x28, 0x66, 0x51, 0xEC, 0xE4, 0x5B, 0x3D,
0xC2, 0x00, 0x7C, 0xB8, 0xA1, 0x63, 0xBF, 0x05, 0x98, 0xDA, 0x48, 0x36,
0x1C, 0x55, 0xD3, 0x9A, 0x69, 0x16, 0x3F, 0xA8, 0xFD, 0x24, 0xCF, 0x5F,
0x83, 0x65, 0x5D, 0x23, 0xDC, 0xA3, 0xAD, 0x96, 0x1C, 0x62, 0xF3, 0x56,
0x20, 0x85, 0x52, 0xBB, 0x9E, 0xD5, 0x29, 0x07, 0x70, 0x96, 0x96, 0x6D,
0x67, 0x0C, 0x35, 0x4E, 0x4A, 0xBC, 0x98, 0x04, 0xF1, 0x74, 0x6C, 0x08,
0xCA, 0x18, 0x21, 0x7C, 0x32, 0x90, 0x5E, 0x46, 0x2E, 0x36, 0xCE, 0x3B,
0xE3, 0x9E, 0x77, 0x2C, 0x18, 0x0E, 0x86, 0x03, 0x9B, 0x27, 0x83, 0xA2,
0xEC, 0x07, 0xA2, 0x8F, 0xB5, 0xC5, 0x5D, 0xF0, 0x6F, 0x4C, 0x52, 0xC9,
0xDE, 0x2B, 0xCB, 0xF6, 0x95, 0x58, 0x17, 0x18, 0x39, 0x95, 0x49, 0x7C,
0xEA, 0x95, 0x6A, 0xE5, 0x15, 0xD2, 0x26, 0x18, 0x98, 0xFA, 0x05, 0x10,
0x15, 0x72, 0x8E, 0x5A, 0x8A, 0xAA, 0xC4, 0x2D, 0xAD, 0x33, 0x17, 0x0D,
0x04, 0x50, 0x7A, 0x33, 0xA8, 0x55, 0x21, 0xAB, 0xDF, 0x1C, 0xBA, 0x64,
0xEC, 0xFB, 0x85, 0x04, 0x58, 0xDB, 0xEF, 0x0A, 0x8A, 0xEA, 0x71, 0x57,
0x5D, 0x06, 0x0C, 0x7D, 0xB3, 0x97, 0x0F, 0x85, 0xA6, 0xE1, 0xE4, 0xC7,
0xAB, 0xF5, 0xAE, 0x8C, 0xDB, 0x09, 0x33, 0xD7, 0x1E, 0x8C, 0x94, 0xE0,
0x4A, 0x25, 0x61, 0x9D, 0xCE, 0xE3, 0xD2, 0x26, 0x1A, 0xD2, 0xEE, 0x6B,
0xF1, 0x2F, 0xFA, 0x06, 0xD9, 0x8A, 0x08, 0x64, 0xD8, 0x76, 0x02, 0x73,
0x3E, 0xC8, 0x6A, 0x64, 0x52, 0x1F, 0x2B, 0x18, 0x17, 0x7B, 0x20, 0x0C,
0xBB, 0xE1, 0x17, 0x57, 0x7A, 0x61, 0x5D, 0x6C, 0x77, 0x09, 0x88, 0xC0,
0xBA, 0xD9, 0x46, 0xE2, 0x08, 0xE2, 0x4F, 0xA0, 0x74, 0xE5, 0xAB, 0x31,
0x43, 0xDB, 0x5B, 0xFC, 0xE0, 0xFD, 0x10, 0x8E, 0x4B, 0x82, 0xD1, 0x20,
0xA9, 0x21, 0x08, 0x01, 0x1A, 0x72, 0x3C, 0x12, 0xA7, 0x87, 0xE6, 0xD7,
0x88, 0x71, 0x9A, 0x10, 0xBD, 0xBA, 0x5B, 0x26, 0x99, 0xC3, 0x27, 0x18,
0x6A, 0xF4, 0xE2, 0x3C, 0x1A, 0x94, 0x68, 0x34, 0xB6, 0x15, 0x0B, 0xDA,
0x25, 0x83, 0xE9, 0xCA, 0x2A, 0xD4, 0x4C, 0xE8, 0xDB, 0xBB, 0xC2, 0xDB,
0x04, 0xDE, 0x8E, 0xF9, 0x2E, 0x8E, 0xFC, 0x14, 0x1F, 0xBE, 0xCA, 0xA6,
0x28, 0x7C, 0x59, 0x47, 0x4E, 0x6B, 0xC0, 0x5D, 0x99, 0xB2, 0x96, 0x4F,
0xA0, 0x90, 0xC3, 0xA2, 0x23, 0x3B, 0xA1, 0x86, 0x51, 0x5B, 0xE7, 0xED,
0x1F, 0x61, 0x29, 0x70, 0xCE, 0xE2, 0xD7, 0xAF, 0xB8, 0x1B, 0xDD, 0x76,
0x21, 0x70, 0x48, 0x1C, 0xD0, 0x06, 0x91, 0x27, 0xD5, 0xB0, 0x5A, 0xA9,
0x93, 0xB4, 0xEA, 0x98, 0x8D, 0x8F, 0xDD, 0xC1, 0x86, 0xFF, 0xB7, 0xDC,
0x90, 0xA6, 0xC0, 0x8F, 0x4D, 0xF4, 0x35, 0xC9, 0x34, 0x06, 0x31, 0x99,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
int ret;
libssh2_sha512_ctx exchange_hash_ctx;
if(key_state->state == libssh2_NB_state_idle) {
key_state->p = _libssh2_bn_init_from_bin(); /* SSH2 defined value
(p_value) */
key_state->g = _libssh2_bn_init(); /* SSH2 defined value (2) */
/* g == 2 */
/* Initialize P and G */
_libssh2_bn_set_word(key_state->g, 2);
_libssh2_bn_from_bin(key_state->p, 512, p_value);
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Initiating Diffie-Hellman Group16 Key Exchange");
key_state->state = libssh2_NB_state_created;
}
ret = diffie_hellman_sha_algo(session, key_state->g, key_state->p, 512,
512, (void *)&exchange_hash_ctx,
SSH_MSG_KEXDH_INIT, SSH_MSG_KEXDH_REPLY,
NULL, 0, &key_state->exchange_state);
if(ret == LIBSSH2_ERROR_EAGAIN) {
return ret;
}
key_state->state = libssh2_NB_state_idle;
_libssh2_bn_free(key_state->p);
key_state->p = NULL;
_libssh2_bn_free(key_state->g);
key_state->g = NULL;
return ret;
}
/* kex_method_diffie_hellman_group16_sha512_key_exchange
* Diffie-Hellman Group18 Key Exchange using SHA512
*/
static int
kex_method_diffie_hellman_group18_sha512_key_exchange(LIBSSH2_SESSION *session,
key_exchange_state_low_t
* key_state)
{
static const unsigned char p_value[1024] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2,
0x21, 0x68, 0xC2, 0x34, 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74, 0x02, 0x0B, 0xBE, 0xA6,
0x3B, 0x13, 0x9B, 0x22, 0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD,
0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B, 0x30, 0x2B, 0x0A, 0x6D,
0xF2, 0x5F, 0x14, 0x37, 0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45,
0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6, 0xF4, 0x4C, 0x42, 0xE9,
0xA6, 0x37, 0xED, 0x6B, 0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED,
0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5, 0xAE, 0x9F, 0x24, 0x11,
0x7C, 0x4B, 0x1F, 0xE6, 0x49, 0x28, 0x66, 0x51, 0xEC, 0xE4, 0x5B, 0x3D,
0xC2, 0x00, 0x7C, 0xB8, 0xA1, 0x63, 0xBF, 0x05, 0x98, 0xDA, 0x48, 0x36,
0x1C, 0x55, 0xD3, 0x9A, 0x69, 0x16, 0x3F, 0xA8, 0xFD, 0x24, 0xCF, 0x5F,
0x83, 0x65, 0x5D, 0x23, 0xDC, 0xA3, 0xAD, 0x96, 0x1C, 0x62, 0xF3, 0x56,
0x20, 0x85, 0x52, 0xBB, 0x9E, 0xD5, 0x29, 0x07, 0x70, 0x96, 0x96, 0x6D,
0x67, 0x0C, 0x35, 0x4E, 0x4A, 0xBC, 0x98, 0x04, 0xF1, 0x74, 0x6C, 0x08,
0xCA, 0x18, 0x21, 0x7C, 0x32, 0x90, 0x5E, 0x46, 0x2E, 0x36, 0xCE, 0x3B,
0xE3, 0x9E, 0x77, 0x2C, 0x18, 0x0E, 0x86, 0x03, 0x9B, 0x27, 0x83, 0xA2,
0xEC, 0x07, 0xA2, 0x8F, 0xB5, 0xC5, 0x5D, 0xF0, 0x6F, 0x4C, 0x52, 0xC9,
0xDE, 0x2B, 0xCB, 0xF6, 0x95, 0x58, 0x17, 0x18, 0x39, 0x95, 0x49, 0x7C,
0xEA, 0x95, 0x6A, 0xE5, 0x15, 0xD2, 0x26, 0x18, 0x98, 0xFA, 0x05, 0x10,
0x15, 0x72, 0x8E, 0x5A, 0x8A, 0xAA, 0xC4, 0x2D, 0xAD, 0x33, 0x17, 0x0D,
0x04, 0x50, 0x7A, 0x33, 0xA8, 0x55, 0x21, 0xAB, 0xDF, 0x1C, 0xBA, 0x64,
0xEC, 0xFB, 0x85, 0x04, 0x58, 0xDB, 0xEF, 0x0A, 0x8A, 0xEA, 0x71, 0x57,
0x5D, 0x06, 0x0C, 0x7D, 0xB3, 0x97, 0x0F, 0x85, 0xA6, 0xE1, 0xE4, 0xC7,
0xAB, 0xF5, 0xAE, 0x8C, 0xDB, 0x09, 0x33, 0xD7, 0x1E, 0x8C, 0x94, 0xE0,
0x4A, 0x25, 0x61, 0x9D, 0xCE, 0xE3, 0xD2, 0x26, 0x1A, 0xD2, 0xEE, 0x6B,
0xF1, 0x2F, 0xFA, 0x06, 0xD9, 0x8A, 0x08, 0x64, 0xD8, 0x76, 0x02, 0x73,
0x3E, 0xC8, 0x6A, 0x64, 0x52, 0x1F, 0x2B, 0x18, 0x17, 0x7B, 0x20, 0x0C,
0xBB, 0xE1, 0x17, 0x57, 0x7A, 0x61, 0x5D, 0x6C, 0x77, 0x09, 0x88, 0xC0,
0xBA, 0xD9, 0x46, 0xE2, 0x08, 0xE2, 0x4F, 0xA0, 0x74, 0xE5, 0xAB, 0x31,
0x43, 0xDB, 0x5B, 0xFC, 0xE0, 0xFD, 0x10, 0x8E, 0x4B, 0x82, 0xD1, 0x20,
0xA9, 0x21, 0x08, 0x01, 0x1A, 0x72, 0x3C, 0x12, 0xA7, 0x87, 0xE6, 0xD7,
0x88, 0x71, 0x9A, 0x10, 0xBD, 0xBA, 0x5B, 0x26, 0x99, 0xC3, 0x27, 0x18,
0x6A, 0xF4, 0xE2, 0x3C, 0x1A, 0x94, 0x68, 0x34, 0xB6, 0x15, 0x0B, 0xDA,
0x25, 0x83, 0xE9, 0xCA, 0x2A, 0xD4, 0x4C, 0xE8, 0xDB, 0xBB, 0xC2, 0xDB,
0x04, 0xDE, 0x8E, 0xF9, 0x2E, 0x8E, 0xFC, 0x14, 0x1F, 0xBE, 0xCA, 0xA6,
0x28, 0x7C, 0x59, 0x47, 0x4E, 0x6B, 0xC0, 0x5D, 0x99, 0xB2, 0x96, 0x4F,
0xA0, 0x90, 0xC3, 0xA2, 0x23, 0x3B, 0xA1, 0x86, 0x51, 0x5B, 0xE7, 0xED,
0x1F, 0x61, 0x29, 0x70, 0xCE, 0xE2, 0xD7, 0xAF, 0xB8, 0x1B, 0xDD, 0x76,
0x21, 0x70, 0x48, 0x1C, 0xD0, 0x06, 0x91, 0x27, 0xD5, 0xB0, 0x5A, 0xA9,
0x93, 0xB4, 0xEA, 0x98, 0x8D, 0x8F, 0xDD, 0xC1, 0x86, 0xFF, 0xB7, 0xDC,
0x90, 0xA6, 0xC0, 0x8F, 0x4D, 0xF4, 0x35, 0xC9, 0x34, 0x02, 0x84, 0x92,
0x36, 0xC3, 0xFA, 0xB4, 0xD2, 0x7C, 0x70, 0x26, 0xC1, 0xD4, 0xDC, 0xB2,
0x60, 0x26, 0x46, 0xDE, 0xC9, 0x75, 0x1E, 0x76, 0x3D, 0xBA, 0x37, 0xBD,
0xF8, 0xFF, 0x94, 0x06, 0xAD, 0x9E, 0x53, 0x0E, 0xE5, 0xDB, 0x38, 0x2F,
0x41, 0x30, 0x01, 0xAE, 0xB0, 0x6A, 0x53, 0xED, 0x90, 0x27, 0xD8, 0x31,
0x17, 0x97, 0x27, 0xB0, 0x86, 0x5A, 0x89, 0x18, 0xDA, 0x3E, 0xDB, 0xEB,
0xCF, 0x9B, 0x14, 0xED, 0x44, 0xCE, 0x6C, 0xBA, 0xCE, 0xD4, 0xBB, 0x1B,
0xDB, 0x7F, 0x14, 0x47, 0xE6, 0xCC, 0x25, 0x4B, 0x33, 0x20, 0x51, 0x51,
0x2B, 0xD7, 0xAF, 0x42, 0x6F, 0xB8, 0xF4, 0x01, 0x37, 0x8C, 0xD2, 0xBF,
0x59, 0x83, 0xCA, 0x01, 0xC6, 0x4B, 0x92, 0xEC, 0xF0, 0x32, 0xEA, 0x15,
0xD1, 0x72, 0x1D, 0x03, 0xF4, 0x82, 0xD7, 0xCE, 0x6E, 0x74, 0xFE, 0xF6,
0xD5, 0x5E, 0x70, 0x2F, 0x46, 0x98, 0x0C, 0x82, 0xB5, 0xA8, 0x40, 0x31,
0x90, 0x0B, 0x1C, 0x9E, 0x59, 0xE7, 0xC9, 0x7F, 0xBE, 0xC7, 0xE8, 0xF3,
0x23, 0xA9, 0x7A, 0x7E, 0x36, 0xCC, 0x88, 0xBE, 0x0F, 0x1D, 0x45, 0xB7,
0xFF, 0x58, 0x5A, 0xC5, 0x4B, 0xD4, 0x07, 0xB2, 0x2B, 0x41, 0x54, 0xAA,
0xCC, 0x8F, 0x6D, 0x7E, 0xBF, 0x48, 0xE1, 0xD8, 0x14, 0xCC, 0x5E, 0xD2,
0x0F, 0x80, 0x37, 0xE0, 0xA7, 0x97, 0x15, 0xEE, 0xF2, 0x9B, 0xE3, 0x28,
0x06, 0xA1, 0xD5, 0x8B, 0xB7, 0xC5, 0xDA, 0x76, 0xF5, 0x50, 0xAA, 0x3D,
0x8A, 0x1F, 0xBF, 0xF0, 0xEB, 0x19, 0xCC, 0xB1, 0xA3, 0x13, 0xD5, 0x5C,
0xDA, 0x56, 0xC9, 0xEC, 0x2E, 0xF2, 0x96, 0x32, 0x38, 0x7F, 0xE8, 0xD7,
0x6E, 0x3C, 0x04, 0x68, 0x04, 0x3E, 0x8F, 0x66, 0x3F, 0x48, 0x60, 0xEE,
0x12, 0xBF, 0x2D, 0x5B, 0x0B, 0x74, 0x74, 0xD6, 0xE6, 0x94, 0xF9, 0x1E,
0x6D, 0xBE, 0x11, 0x59, 0x74, 0xA3, 0x92, 0x6F, 0x12, 0xFE, 0xE5, 0xE4,
0x38, 0x77, 0x7C, 0xB6, 0xA9, 0x32, 0xDF, 0x8C, 0xD8, 0xBE, 0xC4, 0xD0,
0x73, 0xB9, 0x31, 0xBA, 0x3B, 0xC8, 0x32, 0xB6, 0x8D, 0x9D, 0xD3, 0x00,
0x74, 0x1F, 0xA7, 0xBF, 0x8A, 0xFC, 0x47, 0xED, 0x25, 0x76, 0xF6, 0x93,
0x6B, 0xA4, 0x24, 0x66, 0x3A, 0xAB, 0x63, 0x9C, 0x5A, 0xE4, 0xF5, 0x68,
0x34, 0x23, 0xB4, 0x74, 0x2B, 0xF1, 0xC9, 0x78, 0x23, 0x8F, 0x16, 0xCB,
0xE3, 0x9D, 0x65, 0x2D, 0xE3, 0xFD, 0xB8, 0xBE, 0xFC, 0x84, 0x8A, 0xD9,
0x22, 0x22, 0x2E, 0x04, 0xA4, 0x03, 0x7C, 0x07, 0x13, 0xEB, 0x57, 0xA8,
0x1A, 0x23, 0xF0, 0xC7, 0x34, 0x73, 0xFC, 0x64, 0x6C, 0xEA, 0x30, 0x6B,
0x4B, 0xCB, 0xC8, 0x86, 0x2F, 0x83, 0x85, 0xDD, 0xFA, 0x9D, 0x4B, 0x7F,
0xA2, 0xC0, 0x87, 0xE8, 0x79, 0x68, 0x33, 0x03, 0xED, 0x5B, 0xDD, 0x3A,
0x06, 0x2B, 0x3C, 0xF5, 0xB3, 0xA2, 0x78, 0xA6, 0x6D, 0x2A, 0x13, 0xF8,
0x3F, 0x44, 0xF8, 0x2D, 0xDF, 0x31, 0x0E, 0xE0, 0x74, 0xAB, 0x6A, 0x36,
0x45, 0x97, 0xE8, 0x99, 0xA0, 0x25, 0x5D, 0xC1, 0x64, 0xF3, 0x1C, 0xC5,
0x08, 0x46, 0x85, 0x1D, 0xF9, 0xAB, 0x48, 0x19, 0x5D, 0xED, 0x7E, 0xA1,
0xB1, 0xD5, 0x10, 0xBD, 0x7E, 0xE7, 0x4D, 0x73, 0xFA, 0xF3, 0x6B, 0xC3,
0x1E, 0xCF, 0xA2, 0x68, 0x35, 0x90, 0x46, 0xF4, 0xEB, 0x87, 0x9F, 0x92,
0x40, 0x09, 0x43, 0x8B, 0x48, 0x1C, 0x6C, 0xD7, 0x88, 0x9A, 0x00, 0x2E,
0xD5, 0xEE, 0x38, 0x2B, 0xC9, 0x19, 0x0D, 0xA6, 0xFC, 0x02, 0x6E, 0x47,
0x95, 0x58, 0xE4, 0x47, 0x56, 0x77, 0xE9, 0xAA, 0x9E, 0x30, 0x50, 0xE2,
0x76, 0x56, 0x94, 0xDF, 0xC8, 0x1F, 0x56, 0xE8, 0x80, 0xB9, 0x6E, 0x71,
0x60, 0xC9, 0x80, 0xDD, 0x98, 0xED, 0xD3, 0xDF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF
};
int ret;
libssh2_sha512_ctx exchange_hash_ctx;
if(key_state->state == libssh2_NB_state_idle) {
key_state->p = _libssh2_bn_init_from_bin(); /* SSH2 defined value
(p_value) */
key_state->g = _libssh2_bn_init(); /* SSH2 defined value (2) */
/* g == 2 */
/* Initialize P and G */
_libssh2_bn_set_word(key_state->g, 2);
_libssh2_bn_from_bin(key_state->p, 1024, p_value);
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Initiating Diffie-Hellman Group18 Key Exchange");
key_state->state = libssh2_NB_state_created;
}
ret = diffie_hellman_sha_algo(session, key_state->g, key_state->p, 1024,
512, (void *)&exchange_hash_ctx,
SSH_MSG_KEXDH_INIT, SSH_MSG_KEXDH_REPLY,
NULL, 0, &key_state->exchange_state);
if(ret == LIBSSH2_ERROR_EAGAIN) {
return ret;
}
key_state->state = libssh2_NB_state_idle;
_libssh2_bn_free(key_state->p);
key_state->p = NULL;
_libssh2_bn_free(key_state->g);
key_state->g = NULL;
return ret;
}
/* kex_method_diffie_hellman_group_exchange_sha1_key_exchange
* Diffie-Hellman Group Exchange Key Exchange using SHA1
* Negotiates random(ish) group for secret derivation
*/
static int
kex_method_diffie_hellman_group_exchange_sha1_key_exchange
(LIBSSH2_SESSION * session, key_exchange_state_low_t * key_state)
{
int ret = 0;
int rc;
if(key_state->state == libssh2_NB_state_idle) {
key_state->p = _libssh2_bn_init_from_bin();
key_state->g = _libssh2_bn_init_from_bin();
/* Ask for a P and G pair */
#ifdef LIBSSH2_DH_GEX_NEW
key_state->request[0] = SSH_MSG_KEX_DH_GEX_REQUEST;
_libssh2_htonu32(key_state->request + 1, LIBSSH2_DH_GEX_MINGROUP);
_libssh2_htonu32(key_state->request + 5, LIBSSH2_DH_GEX_OPTGROUP);
_libssh2_htonu32(key_state->request + 9, LIBSSH2_DH_GEX_MAXGROUP);
key_state->request_len = 13;
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Initiating Diffie-Hellman Group-Exchange "
"(New Method)");
#else
key_state->request[0] = SSH_MSG_KEX_DH_GEX_REQUEST_OLD;
_libssh2_htonu32(key_state->request + 1, LIBSSH2_DH_GEX_OPTGROUP);
key_state->request_len = 5;
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Initiating Diffie-Hellman Group-Exchange "
"(Old Method)");
#endif
key_state->state = libssh2_NB_state_created;
}
if(key_state->state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, key_state->request,
key_state->request_len, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc,
"Unable to send Group Exchange Request");
goto dh_gex_clean_exit;
}
key_state->state = libssh2_NB_state_sent;
}
if(key_state->state == libssh2_NB_state_sent) {
rc = _libssh2_packet_require(session, SSH_MSG_KEX_DH_GEX_GROUP,
&key_state->data, &key_state->data_len,
0, NULL, 0, &key_state->req_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc,
"Timeout waiting for GEX_GROUP reply");
goto dh_gex_clean_exit;
}
key_state->state = libssh2_NB_state_sent1;
}
if(key_state->state == libssh2_NB_state_sent1) {
size_t p_len, g_len;
unsigned char *p, *g;
struct string_buf buf;
libssh2_sha1_ctx exchange_hash_ctx;
if(key_state->data_len < 9) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected key length");
goto dh_gex_clean_exit;
}
buf.data = key_state->data;
buf.dataptr = buf.data;
buf.len = key_state->data_len;
buf.dataptr++; /* increment to big num */
if(_libssh2_get_bignum_bytes(&buf, &p, &p_len)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected value");
goto dh_gex_clean_exit;
}
if(_libssh2_get_bignum_bytes(&buf, &g, &g_len)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected value");
goto dh_gex_clean_exit;
}
_libssh2_bn_from_bin(key_state->p, p_len, p);
_libssh2_bn_from_bin(key_state->g, g_len, g);
ret = diffie_hellman_sha_algo(session, key_state->g, key_state->p,
p_len, 1,
(void *)&exchange_hash_ctx,
SSH_MSG_KEX_DH_GEX_INIT,
SSH_MSG_KEX_DH_GEX_REPLY,
key_state->data + 1,
key_state->data_len - 1,
&key_state->exchange_state);
if(ret == LIBSSH2_ERROR_EAGAIN) {
return ret;
}
LIBSSH2_FREE(session, key_state->data);
}
dh_gex_clean_exit:
key_state->state = libssh2_NB_state_idle;
_libssh2_bn_free(key_state->g);
key_state->g = NULL;
_libssh2_bn_free(key_state->p);
key_state->p = NULL;
return ret;
}
/* kex_method_diffie_hellman_group_exchange_sha256_key_exchange
* Diffie-Hellman Group Exchange Key Exchange using SHA256
* Negotiates random(ish) group for secret derivation
*/
static int
kex_method_diffie_hellman_group_exchange_sha256_key_exchange
(LIBSSH2_SESSION * session, key_exchange_state_low_t * key_state)
{
int ret = 0;
int rc;
if(key_state->state == libssh2_NB_state_idle) {
key_state->p = _libssh2_bn_init();
key_state->g = _libssh2_bn_init();
/* Ask for a P and G pair */
#ifdef LIBSSH2_DH_GEX_NEW
key_state->request[0] = SSH_MSG_KEX_DH_GEX_REQUEST;
_libssh2_htonu32(key_state->request + 1, LIBSSH2_DH_GEX_MINGROUP);
_libssh2_htonu32(key_state->request + 5, LIBSSH2_DH_GEX_OPTGROUP);
_libssh2_htonu32(key_state->request + 9, LIBSSH2_DH_GEX_MAXGROUP);
key_state->request_len = 13;
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Initiating Diffie-Hellman Group-Exchange "
"(New Method SHA256)");
#else
key_state->request[0] = SSH_MSG_KEX_DH_GEX_REQUEST_OLD;
_libssh2_htonu32(key_state->request + 1, LIBSSH2_DH_GEX_OPTGROUP);
key_state->request_len = 5;
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Initiating Diffie-Hellman Group-Exchange "
"(Old Method SHA256)");
#endif
key_state->state = libssh2_NB_state_created;
}
if(key_state->state == libssh2_NB_state_created) {
rc = _libssh2_transport_send(session, key_state->request,
key_state->request_len, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc,
"Unable to send "
"Group Exchange Request SHA256");
goto dh_gex_clean_exit;
}
key_state->state = libssh2_NB_state_sent;
}
if(key_state->state == libssh2_NB_state_sent) {
rc = _libssh2_packet_require(session, SSH_MSG_KEX_DH_GEX_GROUP,
&key_state->data, &key_state->data_len,
0, NULL, 0, &key_state->req_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc,
"Timeout waiting for GEX_GROUP reply SHA256");
goto dh_gex_clean_exit;
}
key_state->state = libssh2_NB_state_sent1;
}
if(key_state->state == libssh2_NB_state_sent1) {
unsigned char *p, *g;
size_t p_len, g_len;
struct string_buf buf;
libssh2_sha256_ctx exchange_hash_ctx;
if(key_state->data_len < 9) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected key length");
goto dh_gex_clean_exit;
}
buf.data = key_state->data;
buf.dataptr = buf.data;
buf.len = key_state->data_len;
buf.dataptr++; /* increment to big num */
if(_libssh2_get_bignum_bytes(&buf, &p, &p_len)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected value");
goto dh_gex_clean_exit;
}
if(_libssh2_get_bignum_bytes(&buf, &g, &g_len)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected value");
goto dh_gex_clean_exit;
}
_libssh2_bn_from_bin(key_state->p, p_len, p);
_libssh2_bn_from_bin(key_state->g, g_len, g);
ret = diffie_hellman_sha_algo(session, key_state->g, key_state->p,
p_len, 256,
(void *)&exchange_hash_ctx,
SSH_MSG_KEX_DH_GEX_INIT,
SSH_MSG_KEX_DH_GEX_REPLY,
key_state->data + 1,
key_state->data_len - 1,
&key_state->exchange_state);
if(ret == LIBSSH2_ERROR_EAGAIN) {
return ret;
}
LIBSSH2_FREE(session, key_state->data);
}
dh_gex_clean_exit:
key_state->state = libssh2_NB_state_idle;
_libssh2_bn_free(key_state->g);
key_state->g = NULL;
_libssh2_bn_free(key_state->p);
key_state->p = NULL;
return ret;
}
/* LIBSSH2_KEX_METHOD_EC_SHA_HASH_CREATE_VERIFY
*
* Macro that create and verifies EC SHA hash with a given digest bytes
*
* Payload format:
*
* string V_C, client's identification string (CR and LF excluded)
* string V_S, server's identification string (CR and LF excluded)
* string I_C, payload of the client's SSH_MSG_KEXINIT
* string I_S, payload of the server's SSH_MSG_KEXINIT
* string K_S, server's public host key
* string Q_C, client's ephemeral public key octet string
* string Q_S, server's ephemeral public key octet string
* mpint K, shared secret
*
*/
#define LIBSSH2_KEX_METHOD_EC_SHA_HASH_CREATE_VERIFY(digest_type) \
{ \
libssh2_sha##digest_type##_ctx ctx; \
exchange_state->exchange_hash = (void *)&ctx; \
(void)libssh2_sha##digest_type##_init(&ctx); \
if(session->local.banner) { \
_libssh2_htonu32(exchange_state->h_sig_comp, \
strlen((char *) session->local.banner) - 2); \
libssh2_sha##digest_type##_update(ctx, \
exchange_state->h_sig_comp, 4); \
libssh2_sha##digest_type##_update(ctx, \
(char *) session->local.banner, \
strlen((char *) \
session->local.banner) \
- 2); \
} \
else { \
_libssh2_htonu32(exchange_state->h_sig_comp, \
sizeof(LIBSSH2_SSH_DEFAULT_BANNER) - 1); \
libssh2_sha##digest_type##_update(ctx, \
exchange_state->h_sig_comp, 4); \
libssh2_sha##digest_type##_update(ctx, \
LIBSSH2_SSH_DEFAULT_BANNER, \
sizeof(LIBSSH2_SSH_DEFAULT_BANNER) \
- 1); \
} \
\
_libssh2_htonu32(exchange_state->h_sig_comp, \
strlen((char *) session->remote.banner)); \
libssh2_sha##digest_type##_update(ctx, \
exchange_state->h_sig_comp, 4); \
libssh2_sha##digest_type##_update(ctx, \
session->remote.banner, \
strlen((char *) \
session->remote.banner)); \
\
_libssh2_htonu32(exchange_state->h_sig_comp, \
session->local.kexinit_len); \
libssh2_sha##digest_type##_update(ctx, \
exchange_state->h_sig_comp, 4); \
libssh2_sha##digest_type##_update(ctx, \
session->local.kexinit, \
session->local.kexinit_len); \
\
_libssh2_htonu32(exchange_state->h_sig_comp, \
session->remote.kexinit_len); \
libssh2_sha##digest_type##_update(ctx, \
exchange_state->h_sig_comp, 4); \
libssh2_sha##digest_type##_update(ctx, \
session->remote.kexinit, \
session->remote.kexinit_len); \
\
_libssh2_htonu32(exchange_state->h_sig_comp, \
session->server_hostkey_len); \
libssh2_sha##digest_type##_update(ctx, \
exchange_state->h_sig_comp, 4); \
libssh2_sha##digest_type##_update(ctx, \
session->server_hostkey, \
session->server_hostkey_len); \
\
_libssh2_htonu32(exchange_state->h_sig_comp, \
public_key_len); \
libssh2_sha##digest_type##_update(ctx, \
exchange_state->h_sig_comp, 4); \
libssh2_sha##digest_type##_update(ctx, \
public_key, \
public_key_len); \
\
_libssh2_htonu32(exchange_state->h_sig_comp, \
server_public_key_len); \
libssh2_sha##digest_type##_update(ctx, \
exchange_state->h_sig_comp, 4); \
libssh2_sha##digest_type##_update(ctx, \
server_public_key, \
server_public_key_len); \
\
libssh2_sha##digest_type##_update(ctx, \
exchange_state->k_value, \
exchange_state->k_value_len); \
\
libssh2_sha##digest_type##_final(ctx, exchange_state->h_sig_comp); \
\
if(session->hostkey-> \
sig_verify(session, exchange_state->h_sig, \
exchange_state->h_sig_len, exchange_state->h_sig_comp, \
SHA##digest_type##_DIGEST_LENGTH, \
&session->server_hostkey_abstract)) { \
rc = -1; \
} \
} \
#if LIBSSH2_ECDSA
/* kex_session_ecdh_curve_type
* returns the EC curve type by name used in key exchange
*/
static int
kex_session_ecdh_curve_type(const char *name, libssh2_curve_type *out_type)
{
int ret = 0;
libssh2_curve_type type;
if(name == NULL)
return -1;
if(strcmp(name, "ecdh-sha2-nistp256") == 0)
type = LIBSSH2_EC_CURVE_NISTP256;
else if(strcmp(name, "ecdh-sha2-nistp384") == 0)
type = LIBSSH2_EC_CURVE_NISTP384;
else if(strcmp(name, "ecdh-sha2-nistp521") == 0)
type = LIBSSH2_EC_CURVE_NISTP521;
else {
ret = -1;
}
if(ret == 0 && out_type) {
*out_type = type;
}
return ret;
}
/* ecdh_sha2_nistp
* Elliptic Curve Diffie Hellman Key Exchange
*/
static int ecdh_sha2_nistp(LIBSSH2_SESSION *session, libssh2_curve_type type,
unsigned char *data, size_t data_len,
unsigned char *public_key,
size_t public_key_len, _libssh2_ec_key *private_key,
kmdhgGPshakex_state_t *exchange_state)
{
int ret = 0;
int rc;
if(data_len < 5) {
ret = _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_INIT,
"Host key data is too short");
return ret;
}
if(exchange_state->state == libssh2_NB_state_idle) {
/* Setup initial values */
exchange_state->k = _libssh2_bn_init();
exchange_state->state = libssh2_NB_state_created;
}
if(exchange_state->state == libssh2_NB_state_created) {
/* parse INIT reply data */
/* host key K_S */
unsigned char *server_public_key;
size_t server_public_key_len;
struct string_buf buf;
buf.data = data;
buf.len = data_len;
buf.dataptr = buf.data;
buf.dataptr++; /* Advance past packet type */
if(_libssh2_copy_string(session, &buf, &(session->server_hostkey),
&server_public_key_len)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for a copy "
"of the host key");
goto clean_exit;
}
session->server_hostkey_len = (uint32_t)server_public_key_len;
#if LIBSSH2_MD5
{
libssh2_md5_ctx fingerprint_ctx;
if(libssh2_md5_init(&fingerprint_ctx)) {
libssh2_md5_update(fingerprint_ctx, session->server_hostkey,
session->server_hostkey_len);
libssh2_md5_final(fingerprint_ctx,
session->server_hostkey_md5);
session->server_hostkey_md5_valid = TRUE;
}
else {
session->server_hostkey_md5_valid = FALSE;
}
}
#ifdef LIBSSH2DEBUG
{
char fingerprint[50], *fprint = fingerprint;
int i;
for(i = 0; i < 16; i++, fprint += 3) {
snprintf(fprint, 4, "%02x:", session->server_hostkey_md5[i]);
}
*(--fprint) = '\0';
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server's MD5 Fingerprint: %s", fingerprint);
}
#endif /* LIBSSH2DEBUG */
#endif /* ! LIBSSH2_MD5 */
{
libssh2_sha1_ctx fingerprint_ctx;
if(libssh2_sha1_init(&fingerprint_ctx)) {
libssh2_sha1_update(fingerprint_ctx, session->server_hostkey,
session->server_hostkey_len);
libssh2_sha1_final(fingerprint_ctx,
session->server_hostkey_sha1);
session->server_hostkey_sha1_valid = TRUE;
}
else {
session->server_hostkey_sha1_valid = FALSE;
}
}
#ifdef LIBSSH2DEBUG
{
char fingerprint[64], *fprint = fingerprint;
int i;
for(i = 0; i < 20; i++, fprint += 3) {
snprintf(fprint, 4, "%02x:", session->server_hostkey_sha1[i]);
}
*(--fprint) = '\0';
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server's SHA1 Fingerprint: %s", fingerprint);
}
#endif /* LIBSSH2DEBUG */
/* SHA256 */
{
libssh2_sha256_ctx fingerprint_ctx;
if(libssh2_sha256_init(&fingerprint_ctx)) {
libssh2_sha256_update(fingerprint_ctx, session->server_hostkey,
session->server_hostkey_len);
libssh2_sha256_final(fingerprint_ctx,
session->server_hostkey_sha256);
session->server_hostkey_sha256_valid = TRUE;
}
else {
session->server_hostkey_sha256_valid = FALSE;
}
}
#ifdef LIBSSH2DEBUG
{
char *base64Fingerprint = NULL;
_libssh2_base64_encode(session,
(const char *)
session->server_hostkey_sha256,
SHA256_DIGEST_LENGTH, &base64Fingerprint);
if(base64Fingerprint != NULL) {
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server's SHA256 Fingerprint: %s",
base64Fingerprint);
LIBSSH2_FREE(session, base64Fingerprint);
}
}
#endif /* LIBSSH2DEBUG */
if(session->hostkey->init(session, session->server_hostkey,
session->server_hostkey_len,
&session->server_hostkey_abstract)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_INIT,
"Unable to initialize hostkey importer");
goto clean_exit;
}
/* server public key Q_S */
if(_libssh2_get_string(&buf, &server_public_key,
&server_public_key_len)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected key length");
goto clean_exit;
}
/* server signature */
if(_libssh2_get_string(&buf, &exchange_state->h_sig,
&(exchange_state->h_sig_len))) {
ret = _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_INIT,
"Unexpected ecdh server sig length");
goto clean_exit;
}
/* Compute the shared secret K */
rc = _libssh2_ecdh_gen_k(&exchange_state->k, private_key,
server_public_key, server_public_key_len);
if(rc != 0) {
ret = _libssh2_error(session, LIBSSH2_ERROR_KEX_FAILURE,
"Unable to create ECDH shared secret");
goto clean_exit;
}
exchange_state->k_value_len = _libssh2_bn_bytes(exchange_state->k) + 5;
if(_libssh2_bn_bits(exchange_state->k) % 8) {
/* don't need leading 00 */
exchange_state->k_value_len--;
}
exchange_state->k_value =
LIBSSH2_ALLOC(session, exchange_state->k_value_len);
if(!exchange_state->k_value) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate buffer for K");
goto clean_exit;
}
_libssh2_htonu32(exchange_state->k_value,
exchange_state->k_value_len - 4);
if(_libssh2_bn_bits(exchange_state->k) % 8) {
_libssh2_bn_to_bin(exchange_state->k, exchange_state->k_value + 4);
}
else {
exchange_state->k_value[4] = 0;
_libssh2_bn_to_bin(exchange_state->k, exchange_state->k_value + 5);
}
/* verify hash */
switch(type) {
case LIBSSH2_EC_CURVE_NISTP256:
LIBSSH2_KEX_METHOD_EC_SHA_HASH_CREATE_VERIFY(256);
break;
case LIBSSH2_EC_CURVE_NISTP384:
LIBSSH2_KEX_METHOD_EC_SHA_HASH_CREATE_VERIFY(384);
break;
case LIBSSH2_EC_CURVE_NISTP521:
LIBSSH2_KEX_METHOD_EC_SHA_HASH_CREATE_VERIFY(512);
break;
}
if(rc != 0) {
ret = _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_SIGN,
"Unable to verify hostkey signature");
goto clean_exit;
}
exchange_state->c = SSH_MSG_NEWKEYS;
exchange_state->state = libssh2_NB_state_sent;
}
if(exchange_state->state == libssh2_NB_state_sent) {
rc = _libssh2_transport_send(session, &exchange_state->c, 1, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc,
"Unable to send NEWKEYS message");
goto clean_exit;
}
exchange_state->state = libssh2_NB_state_sent2;
}
if(exchange_state->state == libssh2_NB_state_sent2) {
rc = _libssh2_packet_require(session, SSH_MSG_NEWKEYS,
&exchange_state->tmp,
&exchange_state->tmp_len, 0, NULL, 0,
&exchange_state->req_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc, "Timed out waiting for NEWKEYS");
goto clean_exit;
}
/* The first key exchange has been performed,
switch to active crypt/comp/mac mode */
session->state |= LIBSSH2_STATE_NEWKEYS;
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Received NEWKEYS message");
/* This will actually end up being just packet_type(1)
for this packet type anyway */
LIBSSH2_FREE(session, exchange_state->tmp);
if(!session->session_id) {
size_t digest_length = 0;
if(type == LIBSSH2_EC_CURVE_NISTP256)
digest_length = SHA256_DIGEST_LENGTH;
else if(type == LIBSSH2_EC_CURVE_NISTP384)
digest_length = SHA384_DIGEST_LENGTH;
else if(type == LIBSSH2_EC_CURVE_NISTP521)
digest_length = SHA512_DIGEST_LENGTH;
else{
ret = _libssh2_error(session, LIBSSH2_ERROR_KEX_FAILURE,
"Unknown SHA digest for EC curve");
goto clean_exit;
}
session->session_id = LIBSSH2_ALLOC(session, digest_length);
if(!session->session_id) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate buffer for "
"SHA digest");
goto clean_exit;
}
memcpy(session->session_id, exchange_state->h_sig_comp,
digest_length);
session->session_id_len = digest_length;
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"session_id calculated");
}
/* Cleanup any existing cipher */
if(session->local.crypt->dtor) {
session->local.crypt->dtor(session,
&session->local.crypt_abstract);
}
/* Calculate IV/Secret/Key for each direction */
if(session->local.crypt->init) {
unsigned char *iv = NULL, *secret = NULL;
int free_iv = 0, free_secret = 0;
LIBSSH2_KEX_METHOD_EC_SHA_VALUE_HASH(iv,
session->local.crypt->
iv_len, "A");
if(!iv) {
ret = -1;
goto clean_exit;
}
LIBSSH2_KEX_METHOD_EC_SHA_VALUE_HASH(secret,
session->local.crypt->
secret_len, "C");
if(!secret) {
LIBSSH2_FREE(session, iv);
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
if(session->local.crypt->
init(session, session->local.crypt, iv, &free_iv, secret,
&free_secret, 1, &session->local.crypt_abstract)) {
LIBSSH2_FREE(session, iv);
LIBSSH2_FREE(session, secret);
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
if(free_iv) {
_libssh2_explicit_zero(iv, session->local.crypt->iv_len);
LIBSSH2_FREE(session, iv);
}
if(free_secret) {
_libssh2_explicit_zero(secret,
session->local.crypt->secret_len);
LIBSSH2_FREE(session, secret);
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Client to Server IV and Key calculated");
if(session->remote.crypt->dtor) {
/* Cleanup any existing cipher */
session->remote.crypt->dtor(session,
&session->remote.crypt_abstract);
}
if(session->remote.crypt->init) {
unsigned char *iv = NULL, *secret = NULL;
int free_iv = 0, free_secret = 0;
LIBSSH2_KEX_METHOD_EC_SHA_VALUE_HASH(iv,
session->remote.crypt->
iv_len, "B");
if(!iv) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
LIBSSH2_KEX_METHOD_EC_SHA_VALUE_HASH(secret,
session->remote.crypt->
secret_len, "D");
if(!secret) {
LIBSSH2_FREE(session, iv);
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
if(session->remote.crypt->
init(session, session->remote.crypt, iv, &free_iv, secret,
&free_secret, 0, &session->remote.crypt_abstract)) {
LIBSSH2_FREE(session, iv);
LIBSSH2_FREE(session, secret);
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
if(free_iv) {
_libssh2_explicit_zero(iv, session->remote.crypt->iv_len);
LIBSSH2_FREE(session, iv);
}
if(free_secret) {
_libssh2_explicit_zero(secret,
session->remote.crypt->secret_len);
LIBSSH2_FREE(session, secret);
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server to Client IV and Key calculated");
if(session->local.mac->dtor) {
session->local.mac->dtor(session, &session->local.mac_abstract);
}
if(session->local.mac->init) {
unsigned char *key = NULL;
int free_key = 0;
LIBSSH2_KEX_METHOD_EC_SHA_VALUE_HASH(key,
session->local.mac->
key_len, "E");
if(!key) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
session->local.mac->init(session, key, &free_key,
&session->local.mac_abstract);
if(free_key) {
_libssh2_explicit_zero(key, session->local.mac->key_len);
LIBSSH2_FREE(session, key);
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Client to Server HMAC Key calculated");
if(session->remote.mac->dtor) {
session->remote.mac->dtor(session, &session->remote.mac_abstract);
}
if(session->remote.mac->init) {
unsigned char *key = NULL;
int free_key = 0;
LIBSSH2_KEX_METHOD_EC_SHA_VALUE_HASH(key,
session->remote.mac->
key_len, "F");
if(!key) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
session->remote.mac->init(session, key, &free_key,
&session->remote.mac_abstract);
if(free_key) {
_libssh2_explicit_zero(key, session->remote.mac->key_len);
LIBSSH2_FREE(session, key);
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server to Client HMAC Key calculated");
/* Initialize compression for each direction */
/* Cleanup any existing compression */
if(session->local.comp && session->local.comp->dtor) {
session->local.comp->dtor(session, 1,
&session->local.comp_abstract);
}
if(session->local.comp && session->local.comp->init) {
if(session->local.comp->init(session, 1,
&session->local.comp_abstract)) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Client to Server compression initialized");
if(session->remote.comp && session->remote.comp->dtor) {
session->remote.comp->dtor(session, 0,
&session->remote.comp_abstract);
}
if(session->remote.comp && session->remote.comp->init) {
if(session->remote.comp->init(session, 0,
&session->remote.comp_abstract)) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server to Client compression initialized");
}
clean_exit:
_libssh2_bn_free(exchange_state->k);
exchange_state->k = NULL;
if(exchange_state->k_value) {
LIBSSH2_FREE(session, exchange_state->k_value);
exchange_state->k_value = NULL;
}
exchange_state->state = libssh2_NB_state_idle;
return ret;
}
/* kex_method_ecdh_key_exchange
*
* Elliptic Curve Diffie Hellman Key Exchange
* supports SHA256/384/512 hashes based on negotated ecdh method
*
*/
static int
kex_method_ecdh_key_exchange
(LIBSSH2_SESSION * session, key_exchange_state_low_t * key_state)
{
int ret = 0;
int rc = 0;
unsigned char *s;
libssh2_curve_type type;
if(key_state->state == libssh2_NB_state_idle) {
key_state->public_key_oct = NULL;
key_state->state = libssh2_NB_state_created;
}
if(key_state->state == libssh2_NB_state_created) {
rc = kex_session_ecdh_curve_type(session->kex->name, &type);
if(rc != 0) {
ret = _libssh2_error(session, -1,
"Unknown KEX nistp curve type");
goto ecdh_clean_exit;
}
rc = _libssh2_ecdsa_create_key(session, &key_state->private_key,
&key_state->public_key_oct,
&key_state->public_key_oct_len, type);
if(rc != 0) {
ret = _libssh2_error(session, rc,
"Unable to create private key");
goto ecdh_clean_exit;
}
key_state->request[0] = SSH2_MSG_KEX_ECDH_INIT;
s = key_state->request + 1;
_libssh2_store_str(&s, (const char *)key_state->public_key_oct,
key_state->public_key_oct_len);
key_state->request_len = key_state->public_key_oct_len + 5;
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Initiating ECDH SHA2 NISTP256");
key_state->state = libssh2_NB_state_sent;
}
if(key_state->state == libssh2_NB_state_sent) {
rc = _libssh2_transport_send(session, key_state->request,
key_state->request_len, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc,
"Unable to send ECDH_INIT");
goto ecdh_clean_exit;
}
key_state->state = libssh2_NB_state_sent1;
}
if(key_state->state == libssh2_NB_state_sent1) {
rc = _libssh2_packet_require(session, SSH2_MSG_KEX_ECDH_REPLY,
&key_state->data, &key_state->data_len,
0, NULL, 0, &key_state->req_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc,
"Timeout waiting for ECDH_REPLY reply");
goto ecdh_clean_exit;
}
key_state->state = libssh2_NB_state_sent2;
}
if(key_state->state == libssh2_NB_state_sent2) {
(void)kex_session_ecdh_curve_type(session->kex->name, &type);
ret = ecdh_sha2_nistp(session, type, key_state->data,
key_state->data_len,
(unsigned char *)key_state->public_key_oct,
key_state->public_key_oct_len,
key_state->private_key,
&key_state->exchange_state);
if(ret == LIBSSH2_ERROR_EAGAIN) {
return ret;
}
LIBSSH2_FREE(session, key_state->data);
}
ecdh_clean_exit:
if(key_state->public_key_oct) {
LIBSSH2_FREE(session, key_state->public_key_oct);
key_state->public_key_oct = NULL;
}
if(key_state->private_key) {
_libssh2_ecdsa_free(key_state->private_key);
key_state->private_key = NULL;
}
key_state->state = libssh2_NB_state_idle;
return ret;
}
#endif /*LIBSSH2_ECDSA*/
#if LIBSSH2_ED25519
/* curve25519_sha256
* Elliptic Curve Key Exchange
*/
static int
curve25519_sha256(LIBSSH2_SESSION *session, unsigned char *data,
size_t data_len,
unsigned char public_key[LIBSSH2_ED25519_KEY_LEN],
unsigned char private_key[LIBSSH2_ED25519_KEY_LEN],
kmdhgGPshakex_state_t *exchange_state)
{
int ret = 0;
int rc;
int public_key_len = LIBSSH2_ED25519_KEY_LEN;
if(data_len < 5) {
return _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_INIT,
"Data is too short");
}
if(exchange_state->state == libssh2_NB_state_idle) {
/* Setup initial values */
exchange_state->k = _libssh2_bn_init();
exchange_state->state = libssh2_NB_state_created;
}
if(exchange_state->state == libssh2_NB_state_created) {
/* parse INIT reply data */
unsigned char *server_public_key, *server_host_key;
size_t server_public_key_len, hostkey_len;
struct string_buf buf;
if(data_len < 5) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected key length");
goto clean_exit;
}
buf.data = data;
buf.len = data_len;
buf.dataptr = buf.data;
buf.dataptr++; /* advance past packet type */
if(_libssh2_get_string(&buf, &server_host_key, &hostkey_len)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected key length");
goto clean_exit;
}
session->server_hostkey_len = (uint32_t)hostkey_len;
session->server_hostkey = LIBSSH2_ALLOC(session,
session->server_hostkey_len);
if(!session->server_hostkey) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for a copy "
"of the host key");
goto clean_exit;
}
memcpy(session->server_hostkey, server_host_key,
session->server_hostkey_len);
#if LIBSSH2_MD5
{
libssh2_md5_ctx fingerprint_ctx;
if(libssh2_md5_init(&fingerprint_ctx)) {
libssh2_md5_update(fingerprint_ctx, session->server_hostkey,
session->server_hostkey_len);
libssh2_md5_final(fingerprint_ctx,
session->server_hostkey_md5);
session->server_hostkey_md5_valid = TRUE;
}
else {
session->server_hostkey_md5_valid = FALSE;
}
}
#ifdef LIBSSH2DEBUG
{
char fingerprint[50], *fprint = fingerprint;
int i;
for(i = 0; i < 16; i++, fprint += 3) {
snprintf(fprint, 4, "%02x:", session->server_hostkey_md5[i]);
}
*(--fprint) = '\0';
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server's MD5 Fingerprint: %s", fingerprint);
}
#endif /* LIBSSH2DEBUG */
#endif /* ! LIBSSH2_MD5 */
{
libssh2_sha1_ctx fingerprint_ctx;
if(libssh2_sha1_init(&fingerprint_ctx)) {
libssh2_sha1_update(fingerprint_ctx, session->server_hostkey,
session->server_hostkey_len);
libssh2_sha1_final(fingerprint_ctx,
session->server_hostkey_sha1);
session->server_hostkey_sha1_valid = TRUE;
}
else {
session->server_hostkey_sha1_valid = FALSE;
}
}
#ifdef LIBSSH2DEBUG
{
char fingerprint[64], *fprint = fingerprint;
int i;
for(i = 0; i < 20; i++, fprint += 3) {
snprintf(fprint, 4, "%02x:", session->server_hostkey_sha1[i]);
}
*(--fprint) = '\0';
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server's SHA1 Fingerprint: %s", fingerprint);
}
#endif /* LIBSSH2DEBUG */
/* SHA256 */
{
libssh2_sha256_ctx fingerprint_ctx;
if(libssh2_sha256_init(&fingerprint_ctx)) {
libssh2_sha256_update(fingerprint_ctx, session->server_hostkey,
session->server_hostkey_len);
libssh2_sha256_final(fingerprint_ctx,
session->server_hostkey_sha256);
session->server_hostkey_sha256_valid = TRUE;
}
else {
session->server_hostkey_sha256_valid = FALSE;
}
}
#ifdef LIBSSH2DEBUG
{
char *base64Fingerprint = NULL;
_libssh2_base64_encode(session,
(const char *)
session->server_hostkey_sha256,
SHA256_DIGEST_LENGTH, &base64Fingerprint);
if(base64Fingerprint != NULL) {
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server's SHA256 Fingerprint: %s",
base64Fingerprint);
LIBSSH2_FREE(session, base64Fingerprint);
}
}
#endif /* LIBSSH2DEBUG */
if(session->hostkey->init(session, session->server_hostkey,
session->server_hostkey_len,
&session->server_hostkey_abstract)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_INIT,
"Unable to initialize hostkey importer");
goto clean_exit;
}
/* server public key Q_S */
if(_libssh2_get_string(&buf, &server_public_key,
&server_public_key_len)) {
ret = _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected key length");
goto clean_exit;
}
if(server_public_key_len != LIBSSH2_ED25519_KEY_LEN) {
ret = _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_INIT,
"Unexpected curve25519 server "
"public key length");
goto clean_exit;
}
/* server signature */
if(_libssh2_get_string(&buf, &exchange_state->h_sig,
&(exchange_state->h_sig_len))) {
ret = _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_INIT,
"Unexpected curve25519 server sig length");
goto clean_exit;
}
/* Compute the shared secret K */
rc = _libssh2_curve25519_gen_k(&exchange_state->k, private_key,
server_public_key);
if(rc != 0) {
ret = _libssh2_error(session, LIBSSH2_ERROR_KEX_FAILURE,
"Unable to create ECDH shared secret");
goto clean_exit;
}
exchange_state->k_value_len = _libssh2_bn_bytes(exchange_state->k) + 5;
if(_libssh2_bn_bits(exchange_state->k) % 8) {
/* don't need leading 00 */
exchange_state->k_value_len--;
}
exchange_state->k_value =
LIBSSH2_ALLOC(session, exchange_state->k_value_len);
if(!exchange_state->k_value) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate buffer for K");
goto clean_exit;
}
_libssh2_htonu32(exchange_state->k_value,
exchange_state->k_value_len - 4);
if(_libssh2_bn_bits(exchange_state->k) % 8) {
_libssh2_bn_to_bin(exchange_state->k, exchange_state->k_value + 4);
}
else {
exchange_state->k_value[4] = 0;
_libssh2_bn_to_bin(exchange_state->k, exchange_state->k_value + 5);
}
/*/ verify hash */
LIBSSH2_KEX_METHOD_EC_SHA_HASH_CREATE_VERIFY(256);
if(rc != 0) {
ret = _libssh2_error(session, LIBSSH2_ERROR_HOSTKEY_SIGN,
"Unable to verify hostkey signature");
goto clean_exit;
}
exchange_state->c = SSH_MSG_NEWKEYS;
exchange_state->state = libssh2_NB_state_sent;
}
if(exchange_state->state == libssh2_NB_state_sent) {
rc = _libssh2_transport_send(session, &exchange_state->c, 1, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc,
"Unable to send NEWKEYS message");
goto clean_exit;
}
exchange_state->state = libssh2_NB_state_sent2;
}
if(exchange_state->state == libssh2_NB_state_sent2) {
rc = _libssh2_packet_require(session, SSH_MSG_NEWKEYS,
&exchange_state->tmp,
&exchange_state->tmp_len, 0, NULL, 0,
&exchange_state->req_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc, "Timed out waiting for NEWKEYS");
goto clean_exit;
}
/* The first key exchange has been performed, switch to active
crypt/comp/mac mode */
session->state |= LIBSSH2_STATE_NEWKEYS;
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Received NEWKEYS message");
/* This will actually end up being just packet_type(1) for this packet
type anyway */
LIBSSH2_FREE(session, exchange_state->tmp);
if(!session->session_id) {
size_t digest_length = SHA256_DIGEST_LENGTH;
session->session_id = LIBSSH2_ALLOC(session, digest_length);
if(!session->session_id) {
ret = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allxcocate buffer for "
"SHA digest");
goto clean_exit;
}
memcpy(session->session_id, exchange_state->h_sig_comp,
digest_length);
session->session_id_len = digest_length;
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"session_id calculated");
}
/* Cleanup any existing cipher */
if(session->local.crypt->dtor) {
session->local.crypt->dtor(session,
&session->local.crypt_abstract);
}
/* Calculate IV/Secret/Key for each direction */
if(session->local.crypt->init) {
unsigned char *iv = NULL, *secret = NULL;
int free_iv = 0, free_secret = 0;
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(256, iv,
session->local.crypt->
iv_len, "A");
if(!iv) {
ret = -1;
goto clean_exit;
}
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(256, secret,
session->local.crypt->
secret_len, "C");
if(!secret) {
LIBSSH2_FREE(session, iv);
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
if(session->local.crypt->
init(session, session->local.crypt, iv, &free_iv, secret,
&free_secret, 1, &session->local.crypt_abstract)) {
LIBSSH2_FREE(session, iv);
LIBSSH2_FREE(session, secret);
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
if(free_iv) {
_libssh2_explicit_zero(iv, session->local.crypt->iv_len);
LIBSSH2_FREE(session, iv);
}
if(free_secret) {
_libssh2_explicit_zero(secret,
session->local.crypt->secret_len);
LIBSSH2_FREE(session, secret);
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Client to Server IV and Key calculated");
if(session->remote.crypt->dtor) {
/* Cleanup any existing cipher */
session->remote.crypt->dtor(session,
&session->remote.crypt_abstract);
}
if(session->remote.crypt->init) {
unsigned char *iv = NULL, *secret = NULL;
int free_iv = 0, free_secret = 0;
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(256, iv,
session->remote.crypt->
iv_len, "B");
if(!iv) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(256, secret,
session->remote.crypt->
secret_len, "D");
if(!secret) {
LIBSSH2_FREE(session, iv);
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
if(session->remote.crypt->
init(session, session->remote.crypt, iv, &free_iv, secret,
&free_secret, 0, &session->remote.crypt_abstract)) {
LIBSSH2_FREE(session, iv);
LIBSSH2_FREE(session, secret);
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
if(free_iv) {
_libssh2_explicit_zero(iv, session->remote.crypt->iv_len);
LIBSSH2_FREE(session, iv);
}
if(free_secret) {
_libssh2_explicit_zero(secret,
session->remote.crypt->secret_len);
LIBSSH2_FREE(session, secret);
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server to Client IV and Key calculated");
if(session->local.mac->dtor) {
session->local.mac->dtor(session, &session->local.mac_abstract);
}
if(session->local.mac->init) {
unsigned char *key = NULL;
int free_key = 0;
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(256, key,
session->local.mac->
key_len, "E");
if(!key) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
session->local.mac->init(session, key, &free_key,
&session->local.mac_abstract);
if(free_key) {
_libssh2_explicit_zero(key, session->local.mac->key_len);
LIBSSH2_FREE(session, key);
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Client to Server HMAC Key calculated");
if(session->remote.mac->dtor) {
session->remote.mac->dtor(session, &session->remote.mac_abstract);
}
if(session->remote.mac->init) {
unsigned char *key = NULL;
int free_key = 0;
LIBSSH2_KEX_METHOD_SHA_VALUE_HASH(256, key,
session->remote.mac->
key_len, "F");
if(!key) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
session->remote.mac->init(session, key, &free_key,
&session->remote.mac_abstract);
if(free_key) {
_libssh2_explicit_zero(key, session->remote.mac->key_len);
LIBSSH2_FREE(session, key);
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server to Client HMAC Key calculated");
/* Initialize compression for each direction */
/* Cleanup any existing compression */
if(session->local.comp && session->local.comp->dtor) {
session->local.comp->dtor(session, 1,
&session->local.comp_abstract);
}
if(session->local.comp && session->local.comp->init) {
if(session->local.comp->init(session, 1,
&session->local.comp_abstract)) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Client to Server compression initialized");
if(session->remote.comp && session->remote.comp->dtor) {
session->remote.comp->dtor(session, 0,
&session->remote.comp_abstract);
}
if(session->remote.comp && session->remote.comp->init) {
if(session->remote.comp->init(session, 0,
&session->remote.comp_abstract)) {
ret = LIBSSH2_ERROR_KEX_FAILURE;
goto clean_exit;
}
}
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Server to Client compression initialized");
}
clean_exit:
_libssh2_bn_free(exchange_state->k);
exchange_state->k = NULL;
if(exchange_state->k_value) {
LIBSSH2_FREE(session, exchange_state->k_value);
exchange_state->k_value = NULL;
}
exchange_state->state = libssh2_NB_state_idle;
return ret;
}
/* kex_method_curve25519_key_exchange
*
* Elliptic Curve X25519 Key Exchange with SHA256 hash
*
*/
static int
kex_method_curve25519_key_exchange
(LIBSSH2_SESSION * session, key_exchange_state_low_t * key_state)
{
int ret = 0;
int rc = 0;
if(key_state->state == libssh2_NB_state_idle) {
key_state->public_key_oct = NULL;
key_state->state = libssh2_NB_state_created;
}
if(key_state->state == libssh2_NB_state_created) {
unsigned char *s = NULL;
rc = strcmp(session->kex->name, "[email protected]");
if(rc != 0)
rc = strcmp(session->kex->name, "curve25519-sha256");
if(rc != 0) {
ret = _libssh2_error(session, -1,
"Unknown KEX curve25519 curve type");
goto clean_exit;
}
rc = _libssh2_curve25519_new(session,
&key_state->curve25519_public_key,
&key_state->curve25519_private_key);
if(rc != 0) {
ret = _libssh2_error(session, rc,
"Unable to create private key");
goto clean_exit;
}
key_state->request[0] = SSH2_MSG_KEX_ECDH_INIT;
s = key_state->request + 1;
_libssh2_store_str(&s, (const char *)key_state->curve25519_public_key,
LIBSSH2_ED25519_KEY_LEN);
key_state->request_len = LIBSSH2_ED25519_KEY_LEN + 5;
_libssh2_debug(session, LIBSSH2_TRACE_KEX,
"Initiating curve25519 SHA2");
key_state->state = libssh2_NB_state_sent;
}
if(key_state->state == libssh2_NB_state_sent) {
rc = _libssh2_transport_send(session, key_state->request,
key_state->request_len, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc,
"Unable to send ECDH_INIT");
goto clean_exit;
}
key_state->state = libssh2_NB_state_sent1;
}
if(key_state->state == libssh2_NB_state_sent1) {
rc = _libssh2_packet_require(session, SSH2_MSG_KEX_ECDH_REPLY,
&key_state->data, &key_state->data_len,
0, NULL, 0, &key_state->req_state);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
ret = _libssh2_error(session, rc,
"Timeout waiting for ECDH_REPLY reply");
goto clean_exit;
}
key_state->state = libssh2_NB_state_sent2;
}
if(key_state->state == libssh2_NB_state_sent2) {
ret = curve25519_sha256(session, key_state->data, key_state->data_len,
key_state->curve25519_public_key,
key_state->curve25519_private_key,
&key_state->exchange_state);
if(ret == LIBSSH2_ERROR_EAGAIN) {
return ret;
}
LIBSSH2_FREE(session, key_state->data);
}
clean_exit:
if(key_state->curve25519_public_key) {
_libssh2_explicit_zero(key_state->curve25519_public_key,
LIBSSH2_ED25519_KEY_LEN);
LIBSSH2_FREE(session, key_state->curve25519_public_key);
key_state->curve25519_public_key = NULL;
}
if(key_state->curve25519_private_key) {
_libssh2_explicit_zero(key_state->curve25519_private_key,
LIBSSH2_ED25519_KEY_LEN);
LIBSSH2_FREE(session, key_state->curve25519_private_key);
key_state->curve25519_private_key = NULL;
}
key_state->state = libssh2_NB_state_idle;
return ret;
}
#endif /*LIBSSH2_ED25519*/
#define LIBSSH2_KEX_METHOD_FLAG_REQ_ENC_HOSTKEY 0x0001
#define LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY 0x0002
static const LIBSSH2_KEX_METHOD kex_method_diffie_helman_group1_sha1 = {
"diffie-hellman-group1-sha1",
kex_method_diffie_hellman_group1_sha1_key_exchange,
LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY,
};
static const LIBSSH2_KEX_METHOD kex_method_diffie_helman_group14_sha1 = {
"diffie-hellman-group14-sha1",
kex_method_diffie_hellman_group14_sha1_key_exchange,
LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY,
};
static const LIBSSH2_KEX_METHOD kex_method_diffie_helman_group14_sha256 = {
"diffie-hellman-group14-sha256",
kex_method_diffie_hellman_group14_sha256_key_exchange,
LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY,
};
static const LIBSSH2_KEX_METHOD kex_method_diffie_helman_group16_sha512 = {
"diffie-hellman-group16-sha512",
kex_method_diffie_hellman_group16_sha512_key_exchange,
LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY,
};
static const LIBSSH2_KEX_METHOD kex_method_diffie_helman_group18_sha512 = {
"diffie-hellman-group18-sha512",
kex_method_diffie_hellman_group18_sha512_key_exchange,
LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY,
};
static const LIBSSH2_KEX_METHOD
kex_method_diffie_helman_group_exchange_sha1 = {
"diffie-hellman-group-exchange-sha1",
kex_method_diffie_hellman_group_exchange_sha1_key_exchange,
LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY,
};
static const LIBSSH2_KEX_METHOD
kex_method_diffie_helman_group_exchange_sha256 = {
"diffie-hellman-group-exchange-sha256",
kex_method_diffie_hellman_group_exchange_sha256_key_exchange,
LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY,
};
#if LIBSSH2_ECDSA
static const LIBSSH2_KEX_METHOD
kex_method_ecdh_sha2_nistp256 = {
"ecdh-sha2-nistp256",
kex_method_ecdh_key_exchange,
LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY,
};
static const LIBSSH2_KEX_METHOD
kex_method_ecdh_sha2_nistp384 = {
"ecdh-sha2-nistp384",
kex_method_ecdh_key_exchange,
LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY,
};
static const LIBSSH2_KEX_METHOD
kex_method_ecdh_sha2_nistp521 = {
"ecdh-sha2-nistp521",
kex_method_ecdh_key_exchange,
LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY,
};
#endif
#if LIBSSH2_ED25519
static const LIBSSH2_KEX_METHOD
kex_method_ssh_curve25519_sha256_libssh = {
"[email protected]",
kex_method_curve25519_key_exchange,
LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY,
};
static const LIBSSH2_KEX_METHOD
kex_method_ssh_curve25519_sha256 = {
"curve25519-sha256",
kex_method_curve25519_key_exchange,
LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY,
};
#endif
static const LIBSSH2_KEX_METHOD *libssh2_kex_methods[] = {
#if LIBSSH2_ED25519
&kex_method_ssh_curve25519_sha256,
&kex_method_ssh_curve25519_sha256_libssh,
#endif
#if LIBSSH2_ECDSA
&kex_method_ecdh_sha2_nistp256,
&kex_method_ecdh_sha2_nistp384,
&kex_method_ecdh_sha2_nistp521,
#endif
&kex_method_diffie_helman_group_exchange_sha256,
&kex_method_diffie_helman_group16_sha512,
&kex_method_diffie_helman_group18_sha512,
&kex_method_diffie_helman_group14_sha256,
&kex_method_diffie_helman_group14_sha1,
&kex_method_diffie_helman_group1_sha1,
&kex_method_diffie_helman_group_exchange_sha1,
NULL
};
typedef struct _LIBSSH2_COMMON_METHOD
{
const char *name;
} LIBSSH2_COMMON_METHOD;
/* kex_method_strlen
* Calculate the length of a particular method list's resulting string
* Includes SUM(strlen() of each individual method plus 1 (for coma)) - 1
* (because the last coma isn't used)
* Another sign of bad coding practices gone mad. Pretend you don't see this.
*/
static size_t
kex_method_strlen(LIBSSH2_COMMON_METHOD ** method)
{
size_t len = 0;
if(!method || !*method) {
return 0;
}
while(*method && (*method)->name) {
len += strlen((*method)->name) + 1;
method++;
}
return len - 1;
}
/* kex_method_list
* Generate formatted preference list in buf
*/
static size_t
kex_method_list(unsigned char *buf, size_t list_strlen,
LIBSSH2_COMMON_METHOD ** method)
{
_libssh2_htonu32(buf, list_strlen);
buf += 4;
if(!method || !*method) {
return 4;
}
while(*method && (*method)->name) {
int mlen = strlen((*method)->name);
memcpy(buf, (*method)->name, mlen);
buf += mlen;
*(buf++) = ',';
method++;
}
return list_strlen + 4;
}
#define LIBSSH2_METHOD_PREFS_LEN(prefvar, defaultvar) \
((prefvar) ? strlen(prefvar) : \
kex_method_strlen((LIBSSH2_COMMON_METHOD**)(defaultvar)))
#define LIBSSH2_METHOD_PREFS_STR(buf, prefvarlen, prefvar, defaultvar) \
if(prefvar) { \
_libssh2_htonu32((buf), (prefvarlen)); \
buf += 4; \
memcpy((buf), (prefvar), (prefvarlen)); \
buf += (prefvarlen); \
} \
else { \
buf += kex_method_list((buf), (prefvarlen), \
(LIBSSH2_COMMON_METHOD**)(defaultvar)); \
}
/* kexinit
* Send SSH_MSG_KEXINIT packet
*/
static int kexinit(LIBSSH2_SESSION * session)
{
/* 62 = packet_type(1) + cookie(16) + first_packet_follows(1) +
reserved(4) + length longs(40) */
size_t data_len = 62;
size_t kex_len, hostkey_len = 0;
size_t crypt_cs_len, crypt_sc_len;
size_t comp_cs_len, comp_sc_len;
size_t mac_cs_len, mac_sc_len;
size_t lang_cs_len, lang_sc_len;
unsigned char *data, *s;
int rc;
if(session->kexinit_state == libssh2_NB_state_idle) {
kex_len =
LIBSSH2_METHOD_PREFS_LEN(session->kex_prefs, libssh2_kex_methods);
hostkey_len =
LIBSSH2_METHOD_PREFS_LEN(session->hostkey_prefs,
libssh2_hostkey_methods());
crypt_cs_len =
LIBSSH2_METHOD_PREFS_LEN(session->local.crypt_prefs,
libssh2_crypt_methods());
crypt_sc_len =
LIBSSH2_METHOD_PREFS_LEN(session->remote.crypt_prefs,
libssh2_crypt_methods());
mac_cs_len =
LIBSSH2_METHOD_PREFS_LEN(session->local.mac_prefs,
_libssh2_mac_methods());
mac_sc_len =
LIBSSH2_METHOD_PREFS_LEN(session->remote.mac_prefs,
_libssh2_mac_methods());
comp_cs_len =
LIBSSH2_METHOD_PREFS_LEN(session->local.comp_prefs,
_libssh2_comp_methods(session));
comp_sc_len =
LIBSSH2_METHOD_PREFS_LEN(session->remote.comp_prefs,
_libssh2_comp_methods(session));
lang_cs_len =
LIBSSH2_METHOD_PREFS_LEN(session->local.lang_prefs, NULL);
lang_sc_len =
LIBSSH2_METHOD_PREFS_LEN(session->remote.lang_prefs, NULL);
data_len += kex_len + hostkey_len + crypt_cs_len + crypt_sc_len +
comp_cs_len + comp_sc_len + mac_cs_len + mac_sc_len +
lang_cs_len + lang_sc_len;
s = data = LIBSSH2_ALLOC(session, data_len);
if(!data) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory");
}
*(s++) = SSH_MSG_KEXINIT;
if(_libssh2_random(s, 16)) {
return _libssh2_error(session, LIBSSH2_ERROR_RANDGEN,
"Unable to get random bytes "
"for KEXINIT cookie");
}
s += 16;
/* Ennumerating through these lists twice is probably (certainly?)
inefficient from a CPU standpoint, but it saves multiple
malloc/realloc calls */
LIBSSH2_METHOD_PREFS_STR(s, kex_len, session->kex_prefs,
libssh2_kex_methods);
LIBSSH2_METHOD_PREFS_STR(s, hostkey_len, session->hostkey_prefs,
libssh2_hostkey_methods());
LIBSSH2_METHOD_PREFS_STR(s, crypt_cs_len, session->local.crypt_prefs,
libssh2_crypt_methods());
LIBSSH2_METHOD_PREFS_STR(s, crypt_sc_len, session->remote.crypt_prefs,
libssh2_crypt_methods());
LIBSSH2_METHOD_PREFS_STR(s, mac_cs_len, session->local.mac_prefs,
_libssh2_mac_methods());
LIBSSH2_METHOD_PREFS_STR(s, mac_sc_len, session->remote.mac_prefs,
_libssh2_mac_methods());
LIBSSH2_METHOD_PREFS_STR(s, comp_cs_len, session->local.comp_prefs,
_libssh2_comp_methods(session));
LIBSSH2_METHOD_PREFS_STR(s, comp_sc_len, session->remote.comp_prefs,
_libssh2_comp_methods(session));
LIBSSH2_METHOD_PREFS_STR(s, lang_cs_len, session->local.lang_prefs,
NULL);
LIBSSH2_METHOD_PREFS_STR(s, lang_sc_len, session->remote.lang_prefs,
NULL);
/* No optimistic KEX packet follows */
/* Deal with optimistic packets
* session->flags |= KEXINIT_OPTIMISTIC
* session->flags |= KEXINIT_METHODSMATCH
*/
*(s++) = 0;
/* Reserved == 0 */
_libssh2_htonu32(s, 0);
#ifdef LIBSSH2DEBUG
{
/* Funnily enough, they'll all "appear" to be '\0' terminated */
unsigned char *p = data + 21; /* type(1) + cookie(16) + len(4) */
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Sent KEX: %s", p);
p += kex_len + 4;
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Sent HOSTKEY: %s", p);
p += hostkey_len + 4;
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Sent CRYPT_CS: %s", p);
p += crypt_cs_len + 4;
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Sent CRYPT_SC: %s", p);
p += crypt_sc_len + 4;
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Sent MAC_CS: %s", p);
p += mac_cs_len + 4;
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Sent MAC_SC: %s", p);
p += mac_sc_len + 4;
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Sent COMP_CS: %s", p);
p += comp_cs_len + 4;
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Sent COMP_SC: %s", p);
p += comp_sc_len + 4;
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Sent LANG_CS: %s", p);
p += lang_cs_len + 4;
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Sent LANG_SC: %s", p);
p += lang_sc_len + 4;
}
#endif /* LIBSSH2DEBUG */
session->kexinit_state = libssh2_NB_state_created;
}
else {
data = session->kexinit_data;
data_len = session->kexinit_data_len;
/* zap the variables to ensure there is NOT a double free later */
session->kexinit_data = NULL;
session->kexinit_data_len = 0;
}
rc = _libssh2_transport_send(session, data, data_len, NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN) {
session->kexinit_data = data;
session->kexinit_data_len = data_len;
return rc;
}
else if(rc) {
LIBSSH2_FREE(session, data);
session->kexinit_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Unable to send KEXINIT packet to remote host");
}
if(session->local.kexinit) {
LIBSSH2_FREE(session, session->local.kexinit);
}
session->local.kexinit = data;
session->local.kexinit_len = data_len;
session->kexinit_state = libssh2_NB_state_idle;
return 0;
}
/* kex_agree_instr
* Kex specific variant of strstr()
* Needle must be precede by BOL or ',', and followed by ',' or EOL
*/
static unsigned char *
kex_agree_instr(unsigned char *haystack, unsigned long haystack_len,
const unsigned char *needle, unsigned long needle_len)
{
unsigned char *s;
unsigned char *end_haystack;
unsigned long left;
if(haystack == NULL || needle == NULL) {
return NULL;
}
/* Haystack too short to bother trying */
if(haystack_len < needle_len || needle_len == 0) {
return NULL;
}
s = haystack;
end_haystack = &haystack[haystack_len];
left = end_haystack - s;
/* Needle at start of haystack */
if((strncmp((char *) haystack, (char *) needle, needle_len) == 0) &&
(needle_len == haystack_len || haystack[needle_len] == ',')) {
return haystack;
}
/* Search until we run out of comas or we run out of haystack,
whichever comes first */
while((s = (unsigned char *) memchr((char *) s, ',', left))) {
/* Advance buffer past coma if we can */
left = end_haystack - s;
if((left >= 1) && (left <= haystack_len) && (left > needle_len)) {
s++;
}
else {
return NULL;
}
/* Needle at X position */
if((strncmp((char *) s, (char *) needle, needle_len) == 0) &&
(((s - haystack) + needle_len) == haystack_len
|| s[needle_len] == ',')) {
return s;
}
}
return NULL;
}
/* kex_get_method_by_name
*/
static const LIBSSH2_COMMON_METHOD *
kex_get_method_by_name(const char *name, size_t name_len,
const LIBSSH2_COMMON_METHOD ** methodlist)
{
while(*methodlist) {
if((strlen((*methodlist)->name) == name_len) &&
(strncmp((*methodlist)->name, name, name_len) == 0)) {
return *methodlist;
}
methodlist++;
}
return NULL;
}
/* kex_agree_hostkey
* Agree on a Hostkey which works with this kex
*/
static int kex_agree_hostkey(LIBSSH2_SESSION * session,
unsigned long kex_flags,
unsigned char *hostkey, unsigned long hostkey_len)
{
const LIBSSH2_HOSTKEY_METHOD **hostkeyp = libssh2_hostkey_methods();
unsigned char *s;
if(session->hostkey_prefs) {
s = (unsigned char *) session->hostkey_prefs;
while(s && *s) {
unsigned char *p = (unsigned char *) strchr((char *) s, ',');
size_t method_len = (p ? (size_t)(p - s) : strlen((char *) s));
if(kex_agree_instr(hostkey, hostkey_len, s, method_len)) {
const LIBSSH2_HOSTKEY_METHOD *method =
(const LIBSSH2_HOSTKEY_METHOD *)
kex_get_method_by_name((char *) s, method_len,
(const LIBSSH2_COMMON_METHOD **)
hostkeyp);
if(!method) {
/* Invalid method -- Should never be reached */
return -1;
}
/* So far so good, but does it suit our purposes? (Encrypting
vs Signing) */
if(((kex_flags & LIBSSH2_KEX_METHOD_FLAG_REQ_ENC_HOSTKEY) ==
0) || (method->encrypt)) {
/* Either this hostkey can do encryption or this kex just
doesn't require it */
if(((kex_flags & LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY)
== 0) || (method->sig_verify)) {
/* Either this hostkey can do signing or this kex just
doesn't require it */
session->hostkey = method;
return 0;
}
}
}
s = p ? p + 1 : NULL;
}
return -1;
}
while(hostkeyp && (*hostkeyp) && (*hostkeyp)->name) {
s = kex_agree_instr(hostkey, hostkey_len,
(unsigned char *) (*hostkeyp)->name,
strlen((*hostkeyp)->name));
if(s) {
/* So far so good, but does it suit our purposes? (Encrypting vs
Signing) */
if(((kex_flags & LIBSSH2_KEX_METHOD_FLAG_REQ_ENC_HOSTKEY) == 0) ||
((*hostkeyp)->encrypt)) {
/* Either this hostkey can do encryption or this kex just
doesn't require it */
if(((kex_flags & LIBSSH2_KEX_METHOD_FLAG_REQ_SIGN_HOSTKEY) ==
0) || ((*hostkeyp)->sig_verify)) {
/* Either this hostkey can do signing or this kex just
doesn't require it */
session->hostkey = *hostkeyp;
return 0;
}
}
}
hostkeyp++;
}
return -1;
}
/* kex_agree_kex_hostkey
* Agree on a Key Exchange method and a hostkey encoding type
*/
static int kex_agree_kex_hostkey(LIBSSH2_SESSION * session, unsigned char *kex,
unsigned long kex_len, unsigned char *hostkey,
unsigned long hostkey_len)
{
const LIBSSH2_KEX_METHOD **kexp = libssh2_kex_methods;
unsigned char *s;
if(session->kex_prefs) {
s = (unsigned char *) session->kex_prefs;
while(s && *s) {
unsigned char *q, *p = (unsigned char *) strchr((char *) s, ',');
size_t method_len = (p ? (size_t)(p - s) : strlen((char *) s));
q = kex_agree_instr(kex, kex_len, s, method_len);
if(q) {
const LIBSSH2_KEX_METHOD *method = (const LIBSSH2_KEX_METHOD *)
kex_get_method_by_name((char *) s, method_len,
(const LIBSSH2_COMMON_METHOD **)
kexp);
if(!method) {
/* Invalid method -- Should never be reached */
return -1;
}
/* We've agreed on a key exchange method,
* Can we agree on a hostkey that works with this kex?
*/
if(kex_agree_hostkey(session, method->flags, hostkey,
hostkey_len) == 0) {
session->kex = method;
if(session->burn_optimistic_kexinit && (kex == q)) {
/* Server sent an optimistic packet, and client agrees
* with preference cancel burning the first KEX_INIT
* packet that comes in */
session->burn_optimistic_kexinit = 0;
}
return 0;
}
}
s = p ? p + 1 : NULL;
}
return -1;
}
while(*kexp && (*kexp)->name) {
s = kex_agree_instr(kex, kex_len,
(unsigned char *) (*kexp)->name,
strlen((*kexp)->name));
if(s) {
/* We've agreed on a key exchange method,
* Can we agree on a hostkey that works with this kex?
*/
if(kex_agree_hostkey(session, (*kexp)->flags, hostkey,
hostkey_len) == 0) {
session->kex = *kexp;
if(session->burn_optimistic_kexinit && (kex == s)) {
/* Server sent an optimistic packet, and client agrees
* with preference cancel burning the first KEX_INIT
* packet that comes in */
session->burn_optimistic_kexinit = 0;
}
return 0;
}
}
kexp++;
}
return -1;
}
/* kex_agree_crypt
* Agree on a cipher algo
*/
static int kex_agree_crypt(LIBSSH2_SESSION * session,
libssh2_endpoint_data *endpoint,
unsigned char *crypt,
unsigned long crypt_len)
{
const LIBSSH2_CRYPT_METHOD **cryptp = libssh2_crypt_methods();
unsigned char *s;
(void) session;
if(endpoint->crypt_prefs) {
s = (unsigned char *) endpoint->crypt_prefs;
while(s && *s) {
unsigned char *p = (unsigned char *) strchr((char *) s, ',');
size_t method_len = (p ? (size_t)(p - s) : strlen((char *) s));
if(kex_agree_instr(crypt, crypt_len, s, method_len)) {
const LIBSSH2_CRYPT_METHOD *method =
(const LIBSSH2_CRYPT_METHOD *)
kex_get_method_by_name((char *) s, method_len,
(const LIBSSH2_COMMON_METHOD **)
cryptp);
if(!method) {
/* Invalid method -- Should never be reached */
return -1;
}
endpoint->crypt = method;
return 0;
}
s = p ? p + 1 : NULL;
}
return -1;
}
while(*cryptp && (*cryptp)->name) {
s = kex_agree_instr(crypt, crypt_len,
(unsigned char *) (*cryptp)->name,
strlen((*cryptp)->name));
if(s) {
endpoint->crypt = *cryptp;
return 0;
}
cryptp++;
}
return -1;
}
/* kex_agree_mac
* Agree on a message authentication hash
*/
static int kex_agree_mac(LIBSSH2_SESSION * session,
libssh2_endpoint_data * endpoint, unsigned char *mac,
unsigned long mac_len)
{
const LIBSSH2_MAC_METHOD **macp = _libssh2_mac_methods();
unsigned char *s;
(void) session;
if(endpoint->mac_prefs) {
s = (unsigned char *) endpoint->mac_prefs;
while(s && *s) {
unsigned char *p = (unsigned char *) strchr((char *) s, ',');
size_t method_len = (p ? (size_t)(p - s) : strlen((char *) s));
if(kex_agree_instr(mac, mac_len, s, method_len)) {
const LIBSSH2_MAC_METHOD *method = (const LIBSSH2_MAC_METHOD *)
kex_get_method_by_name((char *) s, method_len,
(const LIBSSH2_COMMON_METHOD **)
macp);
if(!method) {
/* Invalid method -- Should never be reached */
return -1;
}
endpoint->mac = method;
return 0;
}
s = p ? p + 1 : NULL;
}
return -1;
}
while(*macp && (*macp)->name) {
s = kex_agree_instr(mac, mac_len, (unsigned char *) (*macp)->name,
strlen((*macp)->name));
if(s) {
endpoint->mac = *macp;
return 0;
}
macp++;
}
return -1;
}
/* kex_agree_comp
* Agree on a compression scheme
*/
static int kex_agree_comp(LIBSSH2_SESSION *session,
libssh2_endpoint_data *endpoint, unsigned char *comp,
unsigned long comp_len)
{
const LIBSSH2_COMP_METHOD **compp = _libssh2_comp_methods(session);
unsigned char *s;
(void) session;
if(endpoint->comp_prefs) {
s = (unsigned char *) endpoint->comp_prefs;
while(s && *s) {
unsigned char *p = (unsigned char *) strchr((char *) s, ',');
size_t method_len = (p ? (size_t)(p - s) : strlen((char *) s));
if(kex_agree_instr(comp, comp_len, s, method_len)) {
const LIBSSH2_COMP_METHOD *method =
(const LIBSSH2_COMP_METHOD *)
kex_get_method_by_name((char *) s, method_len,
(const LIBSSH2_COMMON_METHOD **)
compp);
if(!method) {
/* Invalid method -- Should never be reached */
return -1;
}
endpoint->comp = method;
return 0;
}
s = p ? p + 1 : NULL;
}
return -1;
}
while(*compp && (*compp)->name) {
s = kex_agree_instr(comp, comp_len, (unsigned char *) (*compp)->name,
strlen((*compp)->name));
if(s) {
endpoint->comp = *compp;
return 0;
}
compp++;
}
return -1;
}
/* TODO: When in server mode we need to turn this logic on its head
* The Client gets to make the final call on "agreed methods"
*/
/* kex_agree_methods
* Decide which specific method to use of the methods offered by each party
*/
static int kex_agree_methods(LIBSSH2_SESSION * session, unsigned char *data,
unsigned data_len)
{
unsigned char *kex, *hostkey, *crypt_cs, *crypt_sc, *comp_cs, *comp_sc,
*mac_cs, *mac_sc;
size_t kex_len, hostkey_len, crypt_cs_len, crypt_sc_len, comp_cs_len;
size_t comp_sc_len, mac_cs_len, mac_sc_len;
struct string_buf buf;
if(data_len < 17)
return -1;
buf.data = (unsigned char *)data;
buf.len = data_len;
buf.dataptr = buf.data;
buf.dataptr++; /* advance past packet type */
/* Skip cookie, don't worry, it's preserved in the kexinit field */
buf.dataptr += 16;
/* Locate each string */
if(_libssh2_get_string(&buf, &kex, &kex_len))
return -1;
if(_libssh2_get_string(&buf, &hostkey, &hostkey_len))
return -1;
if(_libssh2_get_string(&buf, &crypt_cs, &crypt_cs_len))
return -1;
if(_libssh2_get_string(&buf, &crypt_sc, &crypt_sc_len))
return -1;
if(_libssh2_get_string(&buf, &mac_cs, &mac_cs_len))
return -1;
if(_libssh2_get_string(&buf, &mac_sc, &mac_sc_len))
return -1;
if(_libssh2_get_string(&buf, &comp_cs, &comp_cs_len))
return -1;
if(_libssh2_get_string(&buf, &comp_sc, &comp_sc_len))
return -1;
/* If the server sent an optimistic packet, assume that it guessed wrong.
* If the guess is determined to be right (by kex_agree_kex_hostkey)
* This flag will be reset to zero so that it's not ignored */
if(_libssh2_check_length(&buf, 1)) {
session->burn_optimistic_kexinit = *(buf.dataptr++);
}
else {
return -1;
}
/* Next uint32 in packet is all zeros (reserved) */
if(kex_agree_kex_hostkey(session, kex, kex_len, hostkey, hostkey_len)) {
return -1;
}
if(kex_agree_crypt(session, &session->local, crypt_cs, crypt_cs_len)
|| kex_agree_crypt(session, &session->remote, crypt_sc,
crypt_sc_len)) {
return -1;
}
if(kex_agree_mac(session, &session->local, mac_cs, mac_cs_len) ||
kex_agree_mac(session, &session->remote, mac_sc, mac_sc_len)) {
return -1;
}
if(kex_agree_comp(session, &session->local, comp_cs, comp_cs_len) ||
kex_agree_comp(session, &session->remote, comp_sc, comp_sc_len)) {
return -1;
}
#if 0
if(libssh2_kex_agree_lang(session, &session->local, lang_cs, lang_cs_len)
|| libssh2_kex_agree_lang(session, &session->remote, lang_sc,
lang_sc_len)) {
return -1;
}
#endif
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Agreed on KEX method: %s",
session->kex->name);
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Agreed on HOSTKEY method: %s",
session->hostkey->name);
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Agreed on CRYPT_CS method: %s",
session->local.crypt->name);
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Agreed on CRYPT_SC method: %s",
session->remote.crypt->name);
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Agreed on MAC_CS method: %s",
session->local.mac->name);
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Agreed on MAC_SC method: %s",
session->remote.mac->name);
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Agreed on COMP_CS method: %s",
session->local.comp->name);
_libssh2_debug(session, LIBSSH2_TRACE_KEX, "Agreed on COMP_SC method: %s",
session->remote.comp->name);
return 0;
}
/* _libssh2_kex_exchange
* Exchange keys
* Returns 0 on success, non-zero on failure
*
* Returns some errors without _libssh2_error()
*/
int
_libssh2_kex_exchange(LIBSSH2_SESSION * session, int reexchange,
key_exchange_state_t * key_state)
{
int rc = 0;
int retcode;
session->state |= LIBSSH2_STATE_KEX_ACTIVE;
if(key_state->state == libssh2_NB_state_idle) {
/* Prevent loop in packet_add() */
session->state |= LIBSSH2_STATE_EXCHANGING_KEYS;
if(reexchange) {
session->kex = NULL;
if(session->hostkey && session->hostkey->dtor) {
session->hostkey->dtor(session,
&session->server_hostkey_abstract);
}
session->hostkey = NULL;
}
key_state->state = libssh2_NB_state_created;
}
if(!session->kex || !session->hostkey) {
if(key_state->state == libssh2_NB_state_created) {
/* Preserve in case of failure */
key_state->oldlocal = session->local.kexinit;
key_state->oldlocal_len = session->local.kexinit_len;
session->local.kexinit = NULL;
key_state->state = libssh2_NB_state_sent;
}
if(key_state->state == libssh2_NB_state_sent) {
retcode = kexinit(session);
if(retcode == LIBSSH2_ERROR_EAGAIN) {
session->state &= ~LIBSSH2_STATE_KEX_ACTIVE;
return retcode;
}
else if(retcode) {
session->local.kexinit = key_state->oldlocal;
session->local.kexinit_len = key_state->oldlocal_len;
key_state->state = libssh2_NB_state_idle;
session->state &= ~LIBSSH2_STATE_KEX_ACTIVE;
session->state &= ~LIBSSH2_STATE_EXCHANGING_KEYS;
return -1;
}
key_state->state = libssh2_NB_state_sent1;
}
if(key_state->state == libssh2_NB_state_sent1) {
retcode =
_libssh2_packet_require(session, SSH_MSG_KEXINIT,
&key_state->data,
&key_state->data_len, 0, NULL, 0,
&key_state->req_state);
if(retcode == LIBSSH2_ERROR_EAGAIN) {
session->state &= ~LIBSSH2_STATE_KEX_ACTIVE;
return retcode;
}
else if(retcode) {
if(session->local.kexinit) {
LIBSSH2_FREE(session, session->local.kexinit);
}
session->local.kexinit = key_state->oldlocal;
session->local.kexinit_len = key_state->oldlocal_len;
key_state->state = libssh2_NB_state_idle;
session->state &= ~LIBSSH2_STATE_KEX_ACTIVE;
session->state &= ~LIBSSH2_STATE_EXCHANGING_KEYS;
return -1;
}
if(session->remote.kexinit) {
LIBSSH2_FREE(session, session->remote.kexinit);
}
session->remote.kexinit = key_state->data;
session->remote.kexinit_len = key_state->data_len;
if(kex_agree_methods(session, key_state->data,
key_state->data_len))
rc = LIBSSH2_ERROR_KEX_FAILURE;
key_state->state = libssh2_NB_state_sent2;
}
}
else {
key_state->state = libssh2_NB_state_sent2;
}
if(rc == 0 && session->kex) {
if(key_state->state == libssh2_NB_state_sent2) {
retcode = session->kex->exchange_keys(session,
&key_state->key_state_low);
if(retcode == LIBSSH2_ERROR_EAGAIN) {
session->state &= ~LIBSSH2_STATE_KEX_ACTIVE;
return retcode;
}
else if(retcode) {
rc = _libssh2_error(session,
LIBSSH2_ERROR_KEY_EXCHANGE_FAILURE,
"Unrecoverable error exchanging keys");
}
}
}
/* Done with kexinit buffers */
if(session->local.kexinit) {
LIBSSH2_FREE(session, session->local.kexinit);
session->local.kexinit = NULL;
}
if(session->remote.kexinit) {
LIBSSH2_FREE(session, session->remote.kexinit);
session->remote.kexinit = NULL;
}
session->state &= ~LIBSSH2_STATE_KEX_ACTIVE;
session->state &= ~LIBSSH2_STATE_EXCHANGING_KEYS;
key_state->state = libssh2_NB_state_idle;
return rc;
}
/* libssh2_session_method_pref
* Set preferred method
*/
LIBSSH2_API int
libssh2_session_method_pref(LIBSSH2_SESSION * session, int method_type,
const char *prefs)
{
char **prefvar, *s, *newprefs;
int prefs_len = strlen(prefs);
const LIBSSH2_COMMON_METHOD **mlist;
switch(method_type) {
case LIBSSH2_METHOD_KEX:
prefvar = &session->kex_prefs;
mlist = (const LIBSSH2_COMMON_METHOD **) libssh2_kex_methods;
break;
case LIBSSH2_METHOD_HOSTKEY:
prefvar = &session->hostkey_prefs;
mlist = (const LIBSSH2_COMMON_METHOD **) libssh2_hostkey_methods();
break;
case LIBSSH2_METHOD_CRYPT_CS:
prefvar = &session->local.crypt_prefs;
mlist = (const LIBSSH2_COMMON_METHOD **) libssh2_crypt_methods();
break;
case LIBSSH2_METHOD_CRYPT_SC:
prefvar = &session->remote.crypt_prefs;
mlist = (const LIBSSH2_COMMON_METHOD **) libssh2_crypt_methods();
break;
case LIBSSH2_METHOD_MAC_CS:
prefvar = &session->local.mac_prefs;
mlist = (const LIBSSH2_COMMON_METHOD **) _libssh2_mac_methods();
break;
case LIBSSH2_METHOD_MAC_SC:
prefvar = &session->remote.mac_prefs;
mlist = (const LIBSSH2_COMMON_METHOD **) _libssh2_mac_methods();
break;
case LIBSSH2_METHOD_COMP_CS:
prefvar = &session->local.comp_prefs;
mlist = (const LIBSSH2_COMMON_METHOD **)
_libssh2_comp_methods(session);
break;
case LIBSSH2_METHOD_COMP_SC:
prefvar = &session->remote.comp_prefs;
mlist = (const LIBSSH2_COMMON_METHOD **)
_libssh2_comp_methods(session);
break;
case LIBSSH2_METHOD_LANG_CS:
prefvar = &session->local.lang_prefs;
mlist = NULL;
break;
case LIBSSH2_METHOD_LANG_SC:
prefvar = &session->remote.lang_prefs;
mlist = NULL;
break;
default:
return _libssh2_error(session, LIBSSH2_ERROR_INVAL,
"Invalid parameter specified for method_type");
}
s = newprefs = LIBSSH2_ALLOC(session, prefs_len + 1);
if(!newprefs) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Error allocated space for method preferences");
}
memcpy(s, prefs, prefs_len + 1);
while(s && *s && mlist) {
char *p = strchr(s, ',');
int method_len = p ? (p - s) : (int) strlen(s);
if(!kex_get_method_by_name(s, method_len, mlist)) {
/* Strip out unsupported method */
if(p) {
memcpy(s, p + 1, strlen(s) - method_len);
}
else {
if(s > newprefs) {
*(--s) = '\0';
}
else {
*s = '\0';
}
}
}
else {
s = p ? (p + 1) : NULL;
}
}
if(!*newprefs) {
LIBSSH2_FREE(session, newprefs);
return _libssh2_error(session, LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"The requested method(s) are not currently "
"supported");
}
if(*prefvar) {
LIBSSH2_FREE(session, *prefvar);
}
*prefvar = newprefs;
return 0;
}
/*
* libssh2_session_supported_algs()
* returns a number of returned algorithms (a positive number) on success,
* a negative number on failure
*/
LIBSSH2_API int libssh2_session_supported_algs(LIBSSH2_SESSION* session,
int method_type,
const char ***algs)
{
unsigned int i;
unsigned int j;
unsigned int ialg;
const LIBSSH2_COMMON_METHOD **mlist;
/* to prevent coredumps due to dereferencing of NULL */
if(NULL == algs)
return _libssh2_error(session, LIBSSH2_ERROR_BAD_USE,
"algs must not be NULL");
switch(method_type) {
case LIBSSH2_METHOD_KEX:
mlist = (const LIBSSH2_COMMON_METHOD **) libssh2_kex_methods;
break;
case LIBSSH2_METHOD_HOSTKEY:
mlist = (const LIBSSH2_COMMON_METHOD **) libssh2_hostkey_methods();
break;
case LIBSSH2_METHOD_CRYPT_CS:
case LIBSSH2_METHOD_CRYPT_SC:
mlist = (const LIBSSH2_COMMON_METHOD **) libssh2_crypt_methods();
break;
case LIBSSH2_METHOD_MAC_CS:
case LIBSSH2_METHOD_MAC_SC:
mlist = (const LIBSSH2_COMMON_METHOD **) _libssh2_mac_methods();
break;
case LIBSSH2_METHOD_COMP_CS:
case LIBSSH2_METHOD_COMP_SC:
mlist = (const LIBSSH2_COMMON_METHOD **)
_libssh2_comp_methods(session);
break;
default:
return _libssh2_error(session, LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unknown method type");
} /* switch */
/* weird situation */
if(NULL == mlist)
return _libssh2_error(session, LIBSSH2_ERROR_INVAL,
"No algorithm found");
/*
mlist is looped through twice. The first time to find the number od
supported algorithms (needed to allocate the proper size of array) and
the second time to actually copy the pointers. Typically this function
will not be called often (typically at the beginning of a session) and
the number of algorithms (i.e. number of iterations in one loop) will
not be high (typically it will not exceed 20) for quite a long time.
So double looping really shouldn't be an issue and it is definitely a
better solution than reallocation several times.
*/
/* count the number of supported algorithms */
for(i = 0, ialg = 0; NULL != mlist[i]; i++) {
/* do not count fields with NULL name */
if(mlist[i]->name)
ialg++;
}
/* weird situation, no algorithm found */
if(0 == ialg)
return _libssh2_error(session, LIBSSH2_ERROR_INVAL,
"No algorithm found");
/* allocate buffer */
*algs = (const char **) LIBSSH2_ALLOC(session, ialg*sizeof(const char *));
if(NULL == *algs) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Memory allocation failed");
}
/* Past this point *algs must be deallocated in case of an error!! */
/* copy non-NULL pointers only */
for(i = 0, j = 0; NULL != mlist[i] && j < ialg; i++) {
if(NULL == mlist[i]->name) {
/* maybe a weird situation but if it occurs, do not include NULL
pointers */
continue;
}
/* note that [] has higher priority than * (dereferencing) */
(*algs)[j++] = mlist[i]->name;
}
/* correct number of pointers copied? (test the code above) */
if(j != ialg) {
/* deallocate buffer */
LIBSSH2_FREE(session, (void *)*algs);
*algs = NULL;
return _libssh2_error(session, LIBSSH2_ERROR_BAD_USE,
"Internal error");
}
return ialg;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/channel.h | #ifndef __LIBSSH2_CHANNEL_H
#define __LIBSSH2_CHANNEL_H
/* Copyright (c) 2008-2010 by Daniel Stenberg
*
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
/*
* _libssh2_channel_receive_window_adjust
*
* Adjust the receive window for a channel by adjustment bytes. If the amount
* to be adjusted is less than LIBSSH2_CHANNEL_MINADJUST and force is 0 the
* adjustment amount will be queued for a later packet.
*
* Always non-blocking.
*/
int _libssh2_channel_receive_window_adjust(LIBSSH2_CHANNEL * channel,
uint32_t adjustment,
unsigned char force,
unsigned int *store);
/*
* _libssh2_channel_flush
*
* Flush data from one (or all) stream
* Returns number of bytes flushed, or negative on failure
*/
int _libssh2_channel_flush(LIBSSH2_CHANNEL *channel, int streamid);
/*
* _libssh2_channel_free
*
* Make sure a channel is closed, then remove the channel from the session
* and free its resource(s)
*
* Returns 0 on success, negative on failure
*/
int _libssh2_channel_free(LIBSSH2_CHANNEL *channel);
int
_libssh2_channel_extended_data(LIBSSH2_CHANNEL *channel, int ignore_mode);
/*
* _libssh2_channel_write
*
* Send data to a channel
*/
ssize_t
_libssh2_channel_write(LIBSSH2_CHANNEL *channel, int stream_id,
const unsigned char *buf, size_t buflen);
/*
* _libssh2_channel_open
*
* Establish a generic session channel
*/
LIBSSH2_CHANNEL *
_libssh2_channel_open(LIBSSH2_SESSION * session, const char *channel_type,
uint32_t channel_type_len,
uint32_t window_size,
uint32_t packet_size,
const unsigned char *message, size_t message_len);
/*
* _libssh2_channel_process_startup
*
* Primitive for libssh2_channel_(shell|exec|subsystem)
*/
int
_libssh2_channel_process_startup(LIBSSH2_CHANNEL *channel,
const char *request, size_t request_len,
const char *message, size_t message_len);
/*
* _libssh2_channel_read
*
* Read data from a channel
*
* It is important to not return 0 until the currently read channel is
* complete. If we read stuff from the wire but it was no payload data to fill
* in the buffer with, we MUST make sure to return PACKET_EAGAIN.
*/
ssize_t _libssh2_channel_read(LIBSSH2_CHANNEL *channel, int stream_id,
char *buf, size_t buflen);
uint32_t _libssh2_channel_nextid(LIBSSH2_SESSION * session);
LIBSSH2_CHANNEL *_libssh2_channel_locate(LIBSSH2_SESSION * session,
uint32_t channel_id);
size_t _libssh2_channel_packet_data_len(LIBSSH2_CHANNEL * channel,
int stream_id);
int _libssh2_channel_close(LIBSSH2_CHANNEL * channel);
/*
* _libssh2_channel_forward_cancel
*
* Stop listening on a remote port and free the listener
* Toss out any pending (un-accept()ed) connections
*
* Return 0 on success, LIBSSH2_ERROR_EAGAIN if would block, -1 on error
*/
int _libssh2_channel_forward_cancel(LIBSSH2_LISTENER *listener);
#endif /* __LIBSSH2_CHANNEL_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/libssh2_priv.h | #ifndef __LIBSSH2_PRIV_H
#define __LIBSSH2_PRIV_H
/* Copyright (c) 2004-2008, 2010, Sara Golemon <[email protected]>
* Copyright (c) 2009-2014 by Daniel Stenberg
* Copyright (c) 2010 Simon Josefsson
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#define LIBSSH2_LIBRARY
#include "libssh2_config.h"
#ifdef HAVE_WINDOWS_H
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
#endif
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
#include <stdio.h>
#include <time.h>
/* The following CPP block should really only be in session.c and packet.c.
However, AIX have #define's for 'events' and 'revents' and we are using
those names in libssh2.h, so we need to include the AIX headers first, to
make sure all code is compiled with consistent names of these fields.
While arguable the best would to change libssh2.h to use other names, that
would break backwards compatibility.
*/
#ifdef HAVE_POLL
# include <poll.h>
#else
# if defined(HAVE_SELECT) && !defined(WIN32)
# ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
# else
# include <sys/time.h>
# include <sys/types.h>
# endif
# endif
#endif
/* Needed for struct iovec on some platforms */
#ifdef HAVE_SYS_UIO_H
#include <sys/uio.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#include "libssh2.h"
#include "libssh2_publickey.h"
#include "libssh2_sftp.h"
#include "misc.h" /* for the linked list stuff */
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifdef _MSC_VER
/* "inline" keyword is valid only with C++ engine! */
#define inline __inline
#endif
/* 3DS doesn't seem to have iovec */
#if defined(WIN32) || defined(_3DS)
struct iovec {
size_t iov_len;
void *iov_base;
};
#endif
/* Provide iovec / writev on WIN32 platform. */
#ifdef WIN32
static inline int writev(int sock, struct iovec *iov, int nvecs)
{
DWORD ret;
if(WSASend(sock, (LPWSABUF)iov, nvecs, &ret, 0, NULL, NULL) == 0) {
return ret;
}
return -1;
}
#endif /* WIN32 */
#ifdef __OS400__
/* Force parameter type. */
#define send(s, b, l, f) send((s), (unsigned char *) (b), (l), (f))
#endif
#include "crypto.h"
#ifdef HAVE_WINSOCK2_H
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#ifndef SIZE_MAX
#if _WIN64
#define SIZE_MAX 0xFFFFFFFFFFFFFFFF
#else
#define SIZE_MAX 0xFFFFFFFF
#endif
#endif
#ifndef UINT_MAX
#define UINT_MAX 0xFFFFFFFF
#endif
/* RFC4253 section 6.1 Maximum Packet Length says:
*
* "All implementations MUST be able to process packets with
* uncompressed payload length of 32768 bytes or less and
* total packet size of 35000 bytes or less (including length,
* padding length, payload, padding, and MAC.)."
*/
#define MAX_SSH_PACKET_LEN 35000
#define MAX_SHA_DIGEST_LEN SHA512_DIGEST_LENGTH
#define LIBSSH2_ALLOC(session, count) \
session->alloc((count), &(session)->abstract)
#define LIBSSH2_CALLOC(session, count) _libssh2_calloc(session, count)
#define LIBSSH2_REALLOC(session, ptr, count) \
((ptr) ? session->realloc((ptr), (count), &(session)->abstract) : \
session->alloc((count), &(session)->abstract))
#define LIBSSH2_FREE(session, ptr) \
session->free((ptr), &(session)->abstract)
#define LIBSSH2_IGNORE(session, data, datalen) \
session->ssh_msg_ignore((session), (data), (datalen), &(session)->abstract)
#define LIBSSH2_DEBUG(session, always_display, message, message_len, \
language, language_len) \
session->ssh_msg_debug((session), (always_display), (message), \
(message_len), (language), (language_len), \
&(session)->abstract)
#define LIBSSH2_DISCONNECT(session, reason, message, message_len, \
language, language_len) \
session->ssh_msg_disconnect((session), (reason), (message), \
(message_len), (language), (language_len), \
&(session)->abstract)
#define LIBSSH2_MACERROR(session, data, datalen) \
session->macerror((session), (data), (datalen), &(session)->abstract)
#define LIBSSH2_X11_OPEN(channel, shost, sport) \
channel->session->x11(((channel)->session), (channel), \
(shost), (sport), (&(channel)->session->abstract))
#define LIBSSH2_CHANNEL_CLOSE(session, channel) \
channel->close_cb((session), &(session)->abstract, \
(channel), &(channel)->abstract)
#define LIBSSH2_SEND_FD(session, fd, buffer, length, flags) \
(session->send)(fd, buffer, length, flags, &session->abstract)
#define LIBSSH2_RECV_FD(session, fd, buffer, length, flags) \
(session->recv)(fd, buffer, length, flags, &session->abstract)
#define LIBSSH2_SEND(session, buffer, length, flags) \
LIBSSH2_SEND_FD(session, session->socket_fd, buffer, length, flags)
#define LIBSSH2_RECV(session, buffer, length, flags) \
LIBSSH2_RECV_FD(session, session->socket_fd, buffer, length, flags)
typedef struct _LIBSSH2_KEX_METHOD LIBSSH2_KEX_METHOD;
typedef struct _LIBSSH2_HOSTKEY_METHOD LIBSSH2_HOSTKEY_METHOD;
typedef struct _LIBSSH2_CRYPT_METHOD LIBSSH2_CRYPT_METHOD;
typedef struct _LIBSSH2_COMP_METHOD LIBSSH2_COMP_METHOD;
typedef struct _LIBSSH2_PACKET LIBSSH2_PACKET;
typedef enum
{
libssh2_NB_state_idle = 0,
libssh2_NB_state_allocated,
libssh2_NB_state_created,
libssh2_NB_state_sent,
libssh2_NB_state_sent1,
libssh2_NB_state_sent2,
libssh2_NB_state_sent3,
libssh2_NB_state_sent4,
libssh2_NB_state_sent5,
libssh2_NB_state_sent6,
libssh2_NB_state_sent7,
libssh2_NB_state_jump1,
libssh2_NB_state_jump2,
libssh2_NB_state_jump3,
libssh2_NB_state_jump4,
libssh2_NB_state_jump5,
libssh2_NB_state_end
} libssh2_nonblocking_states;
typedef struct packet_require_state_t
{
libssh2_nonblocking_states state;
time_t start;
} packet_require_state_t;
typedef struct packet_requirev_state_t
{
time_t start;
} packet_requirev_state_t;
typedef struct kmdhgGPshakex_state_t
{
libssh2_nonblocking_states state;
unsigned char *e_packet;
unsigned char *s_packet;
unsigned char *tmp;
unsigned char h_sig_comp[MAX_SHA_DIGEST_LEN];
unsigned char c;
size_t e_packet_len;
size_t s_packet_len;
size_t tmp_len;
_libssh2_bn_ctx *ctx;
_libssh2_dh_ctx x;
_libssh2_bn *e;
_libssh2_bn *f;
_libssh2_bn *k;
unsigned char *f_value;
unsigned char *k_value;
unsigned char *h_sig;
size_t f_value_len;
size_t k_value_len;
size_t h_sig_len;
void *exchange_hash;
packet_require_state_t req_state;
libssh2_nonblocking_states burn_state;
} kmdhgGPshakex_state_t;
typedef struct key_exchange_state_low_t
{
libssh2_nonblocking_states state;
packet_require_state_t req_state;
kmdhgGPshakex_state_t exchange_state;
_libssh2_bn *p; /* SSH2 defined value (p_value) */
_libssh2_bn *g; /* SSH2 defined value (2) */
unsigned char request[256]; /* Must fit EC_MAX_POINT_LEN + data */
unsigned char *data;
size_t request_len;
size_t data_len;
_libssh2_ec_key *private_key; /* SSH2 ecdh private key */
unsigned char *public_key_oct; /* SSH2 ecdh public key octal value */
size_t public_key_oct_len; /* SSH2 ecdh public key octal value
length */
unsigned char *curve25519_public_key; /* curve25519 public key, 32
bytes */
unsigned char *curve25519_private_key; /* curve25519 private key, 32
bytes */
} key_exchange_state_low_t;
typedef struct key_exchange_state_t
{
libssh2_nonblocking_states state;
packet_require_state_t req_state;
key_exchange_state_low_t key_state_low;
unsigned char *data;
size_t data_len;
unsigned char *oldlocal;
size_t oldlocal_len;
} key_exchange_state_t;
#define FwdNotReq "Forward not requested"
typedef struct packet_queue_listener_state_t
{
libssh2_nonblocking_states state;
unsigned char packet[17 + (sizeof(FwdNotReq) - 1)];
unsigned char *host;
unsigned char *shost;
uint32_t sender_channel;
uint32_t initial_window_size;
uint32_t packet_size;
uint32_t port;
uint32_t sport;
uint32_t host_len;
uint32_t shost_len;
LIBSSH2_CHANNEL *channel;
} packet_queue_listener_state_t;
#define X11FwdUnAvil "X11 Forward Unavailable"
typedef struct packet_x11_open_state_t
{
libssh2_nonblocking_states state;
unsigned char packet[17 + (sizeof(X11FwdUnAvil) - 1)];
unsigned char *shost;
uint32_t sender_channel;
uint32_t initial_window_size;
uint32_t packet_size;
uint32_t sport;
uint32_t shost_len;
LIBSSH2_CHANNEL *channel;
} packet_x11_open_state_t;
struct _LIBSSH2_PACKET
{
struct list_node node; /* linked list header */
/* the raw unencrypted payload */
unsigned char *data;
size_t data_len;
/* Where to start reading data from,
* used for channel data that's been partially consumed */
size_t data_head;
};
typedef struct _libssh2_channel_data
{
/* Identifier */
uint32_t id;
/* Limits and restrictions */
uint32_t window_size_initial, window_size, packet_size;
/* Set to 1 when CHANNEL_CLOSE / CHANNEL_EOF sent/received */
char close, eof, extended_data_ignore_mode;
} libssh2_channel_data;
struct _LIBSSH2_CHANNEL
{
struct list_node node;
unsigned char *channel_type;
unsigned channel_type_len;
/* channel's program exit status */
int exit_status;
/* channel's program exit signal (without the SIG prefix) */
char *exit_signal;
libssh2_channel_data local, remote;
/* Amount of bytes to be refunded to receive window (but not yet sent) */
uint32_t adjust_queue;
/* Data immediately available for reading */
uint32_t read_avail;
LIBSSH2_SESSION *session;
void *abstract;
LIBSSH2_CHANNEL_CLOSE_FUNC((*close_cb));
/* State variables used in libssh2_channel_setenv_ex() */
libssh2_nonblocking_states setenv_state;
unsigned char *setenv_packet;
size_t setenv_packet_len;
unsigned char setenv_local_channel[4];
packet_requirev_state_t setenv_packet_requirev_state;
/* State variables used in libssh2_channel_request_pty_ex()
libssh2_channel_request_pty_size_ex() */
libssh2_nonblocking_states reqPTY_state;
unsigned char reqPTY_packet[41 + 256];
size_t reqPTY_packet_len;
unsigned char reqPTY_local_channel[4];
packet_requirev_state_t reqPTY_packet_requirev_state;
/* State variables used in libssh2_channel_x11_req_ex() */
libssh2_nonblocking_states reqX11_state;
unsigned char *reqX11_packet;
size_t reqX11_packet_len;
unsigned char reqX11_local_channel[4];
packet_requirev_state_t reqX11_packet_requirev_state;
/* State variables used in libssh2_channel_process_startup() */
libssh2_nonblocking_states process_state;
unsigned char *process_packet;
size_t process_packet_len;
unsigned char process_local_channel[4];
packet_requirev_state_t process_packet_requirev_state;
/* State variables used in libssh2_channel_flush_ex() */
libssh2_nonblocking_states flush_state;
size_t flush_refund_bytes;
size_t flush_flush_bytes;
/* State variables used in libssh2_channel_receive_window_adjust() */
libssh2_nonblocking_states adjust_state;
unsigned char adjust_adjust[9]; /* packet_type(1) + channel(4) +
adjustment(4) */
/* State variables used in libssh2_channel_read_ex() */
libssh2_nonblocking_states read_state;
uint32_t read_local_id;
/* State variables used in libssh2_channel_write_ex() */
libssh2_nonblocking_states write_state;
unsigned char write_packet[13];
size_t write_packet_len;
size_t write_bufwrite;
/* State variables used in libssh2_channel_close() */
libssh2_nonblocking_states close_state;
unsigned char close_packet[5];
/* State variables used in libssh2_channel_wait_closedeof() */
libssh2_nonblocking_states wait_eof_state;
/* State variables used in libssh2_channel_wait_closed() */
libssh2_nonblocking_states wait_closed_state;
/* State variables used in libssh2_channel_free() */
libssh2_nonblocking_states free_state;
/* State variables used in libssh2_channel_handle_extended_data2() */
libssh2_nonblocking_states extData2_state;
/* State variables used in libssh2_channel_request_auth_agent() */
libssh2_nonblocking_states req_auth_agent_try_state;
libssh2_nonblocking_states req_auth_agent_state;
unsigned char req_auth_agent_packet[36];
size_t req_auth_agent_packet_len;
unsigned char req_auth_agent_local_channel[4];
packet_requirev_state_t req_auth_agent_requirev_state;
};
struct _LIBSSH2_LISTENER
{
struct list_node node; /* linked list header */
LIBSSH2_SESSION *session;
char *host;
int port;
/* a list of CHANNELs for this listener */
struct list_head queue;
int queue_size;
int queue_maxsize;
/* State variables used in libssh2_channel_forward_cancel() */
libssh2_nonblocking_states chanFwdCncl_state;
unsigned char *chanFwdCncl_data;
size_t chanFwdCncl_data_len;
};
typedef struct _libssh2_endpoint_data
{
unsigned char *banner;
unsigned char *kexinit;
size_t kexinit_len;
const LIBSSH2_CRYPT_METHOD *crypt;
void *crypt_abstract;
const struct _LIBSSH2_MAC_METHOD *mac;
uint32_t seqno;
void *mac_abstract;
const LIBSSH2_COMP_METHOD *comp;
void *comp_abstract;
/* Method Preferences -- NULL yields "load order" */
char *crypt_prefs;
char *mac_prefs;
char *comp_prefs;
char *lang_prefs;
} libssh2_endpoint_data;
#define PACKETBUFSIZE (1024*16)
struct transportpacket
{
/* ------------- for incoming data --------------- */
unsigned char buf[PACKETBUFSIZE];
unsigned char init[5]; /* first 5 bytes of the incoming data stream,
still encrypted */
size_t writeidx; /* at what array index we do the next write into
the buffer */
size_t readidx; /* at what array index we do the next read from
the buffer */
uint32_t packet_length; /* the most recent packet_length as read from the
network data */
uint8_t padding_length; /* the most recent padding_length as read from the
network data */
size_t data_num; /* How much of the total package that has been read
so far. */
size_t total_num; /* How much a total package is supposed to be, in
number of bytes. A full package is
packet_length + padding_length + 4 +
mac_length. */
unsigned char *payload; /* this is a pointer to a LIBSSH2_ALLOC()
area to which we write decrypted data */
unsigned char *wptr; /* write pointer into the payload to where we
are currently writing decrypted data */
/* ------------- for outgoing data --------------- */
unsigned char outbuf[MAX_SSH_PACKET_LEN]; /* area for the outgoing data */
int ototal_num; /* size of outbuf in number of bytes */
const unsigned char *odata; /* original pointer to the data */
size_t olen; /* original size of the data we stored in
outbuf */
size_t osent; /* number of bytes already sent */
};
struct _LIBSSH2_PUBLICKEY
{
LIBSSH2_CHANNEL *channel;
uint32_t version;
/* State variables used in libssh2_publickey_packet_receive() */
libssh2_nonblocking_states receive_state;
unsigned char *receive_packet;
size_t receive_packet_len;
/* State variables used in libssh2_publickey_add_ex() */
libssh2_nonblocking_states add_state;
unsigned char *add_packet;
unsigned char *add_s;
/* State variables used in libssh2_publickey_remove_ex() */
libssh2_nonblocking_states remove_state;
unsigned char *remove_packet;
unsigned char *remove_s;
/* State variables used in libssh2_publickey_list_fetch() */
libssh2_nonblocking_states listFetch_state;
unsigned char *listFetch_s;
unsigned char listFetch_buffer[12];
unsigned char *listFetch_data;
size_t listFetch_data_len;
};
#define LIBSSH2_SCP_RESPONSE_BUFLEN 256
struct flags {
int sigpipe; /* LIBSSH2_FLAG_SIGPIPE */
int compress; /* LIBSSH2_FLAG_COMPRESS */
};
struct _LIBSSH2_SESSION
{
/* Memory management callbacks */
void *abstract;
LIBSSH2_ALLOC_FUNC((*alloc));
LIBSSH2_REALLOC_FUNC((*realloc));
LIBSSH2_FREE_FUNC((*free));
/* Other callbacks */
LIBSSH2_IGNORE_FUNC((*ssh_msg_ignore));
LIBSSH2_DEBUG_FUNC((*ssh_msg_debug));
LIBSSH2_DISCONNECT_FUNC((*ssh_msg_disconnect));
LIBSSH2_MACERROR_FUNC((*macerror));
LIBSSH2_X11_OPEN_FUNC((*x11));
LIBSSH2_SEND_FUNC((*send));
LIBSSH2_RECV_FUNC((*recv));
/* Method preferences -- NULL yields "load order" */
char *kex_prefs;
char *hostkey_prefs;
int state;
/* Flag options */
struct flags flag;
/* Agreed Key Exchange Method */
const LIBSSH2_KEX_METHOD *kex;
unsigned int burn_optimistic_kexinit:1;
unsigned char *session_id;
uint32_t session_id_len;
/* this is set to TRUE if a blocking API behavior is requested */
int api_block_mode;
/* Timeout used when blocking API behavior is active */
long api_timeout;
/* Server's public key */
const LIBSSH2_HOSTKEY_METHOD *hostkey;
void *server_hostkey_abstract;
/* Either set with libssh2_session_hostkey() (for server mode)
* Or read from server in (eg) KEXDH_INIT (for client mode)
*/
unsigned char *server_hostkey;
uint32_t server_hostkey_len;
#if LIBSSH2_MD5
unsigned char server_hostkey_md5[MD5_DIGEST_LENGTH];
int server_hostkey_md5_valid;
#endif /* ! LIBSSH2_MD5 */
unsigned char server_hostkey_sha1[SHA_DIGEST_LENGTH];
int server_hostkey_sha1_valid;
unsigned char server_hostkey_sha256[SHA256_DIGEST_LENGTH];
int server_hostkey_sha256_valid;
/* (remote as source of data -- packet_read ) */
libssh2_endpoint_data remote;
/* (local as source of data -- packet_write ) */
libssh2_endpoint_data local;
/* Inbound Data linked list -- Sometimes the packet that comes in isn't the
packet we're ready for */
struct list_head packets;
/* Active connection channels */
struct list_head channels;
uint32_t next_channel;
struct list_head listeners; /* list of LIBSSH2_LISTENER structs */
/* Actual I/O socket */
libssh2_socket_t socket_fd;
int socket_state;
int socket_block_directions;
int socket_prev_blockstate; /* stores the state of the socket blockiness
when libssh2_session_startup() is called */
/* Error tracking */
const char *err_msg;
int err_code;
int err_flags;
/* struct members for packet-level reading */
struct transportpacket packet;
#ifdef LIBSSH2DEBUG
int showmask; /* what debug/trace messages to display */
libssh2_trace_handler_func tracehandler; /* callback to display trace
messages */
void *tracehandler_context; /* context for the trace handler */
#endif
/* State variables used in libssh2_banner_send() */
libssh2_nonblocking_states banner_TxRx_state;
char banner_TxRx_banner[256];
ssize_t banner_TxRx_total_send;
/* State variables used in libssh2_kexinit() */
libssh2_nonblocking_states kexinit_state;
unsigned char *kexinit_data;
size_t kexinit_data_len;
/* State variables used in libssh2_session_startup() */
libssh2_nonblocking_states startup_state;
unsigned char *startup_data;
size_t startup_data_len;
unsigned char startup_service[sizeof("ssh-userauth") + 5 - 1];
size_t startup_service_length;
packet_require_state_t startup_req_state;
key_exchange_state_t startup_key_state;
/* State variables used in libssh2_session_free() */
libssh2_nonblocking_states free_state;
/* State variables used in libssh2_session_disconnect_ex() */
libssh2_nonblocking_states disconnect_state;
unsigned char disconnect_data[256 + 13];
size_t disconnect_data_len;
/* State variables used in libssh2_packet_read() */
libssh2_nonblocking_states readPack_state;
int readPack_encrypted;
/* State variables used in libssh2_userauth_list() */
libssh2_nonblocking_states userauth_list_state;
unsigned char *userauth_list_data;
size_t userauth_list_data_len;
packet_requirev_state_t userauth_list_packet_requirev_state;
/* State variables used in libssh2_userauth_password_ex() */
libssh2_nonblocking_states userauth_pswd_state;
unsigned char *userauth_pswd_data;
unsigned char userauth_pswd_data0;
size_t userauth_pswd_data_len;
char *userauth_pswd_newpw;
int userauth_pswd_newpw_len;
packet_requirev_state_t userauth_pswd_packet_requirev_state;
/* State variables used in libssh2_userauth_hostbased_fromfile_ex() */
libssh2_nonblocking_states userauth_host_state;
unsigned char *userauth_host_data;
size_t userauth_host_data_len;
unsigned char *userauth_host_packet;
size_t userauth_host_packet_len;
unsigned char *userauth_host_method;
size_t userauth_host_method_len;
unsigned char *userauth_host_s;
packet_requirev_state_t userauth_host_packet_requirev_state;
/* State variables used in libssh2_userauth_publickey_fromfile_ex() */
libssh2_nonblocking_states userauth_pblc_state;
unsigned char *userauth_pblc_data;
size_t userauth_pblc_data_len;
unsigned char *userauth_pblc_packet;
size_t userauth_pblc_packet_len;
unsigned char *userauth_pblc_method;
size_t userauth_pblc_method_len;
unsigned char *userauth_pblc_s;
unsigned char *userauth_pblc_b;
packet_requirev_state_t userauth_pblc_packet_requirev_state;
/* State variables used in libssh2_userauth_keyboard_interactive_ex() */
libssh2_nonblocking_states userauth_kybd_state;
unsigned char *userauth_kybd_data;
size_t userauth_kybd_data_len;
unsigned char *userauth_kybd_packet;
size_t userauth_kybd_packet_len;
unsigned int userauth_kybd_auth_name_len;
char *userauth_kybd_auth_name;
unsigned userauth_kybd_auth_instruction_len;
char *userauth_kybd_auth_instruction;
unsigned int userauth_kybd_num_prompts;
int userauth_kybd_auth_failure;
LIBSSH2_USERAUTH_KBDINT_PROMPT *userauth_kybd_prompts;
LIBSSH2_USERAUTH_KBDINT_RESPONSE *userauth_kybd_responses;
packet_requirev_state_t userauth_kybd_packet_requirev_state;
/* State variables used in libssh2_channel_open_ex() */
libssh2_nonblocking_states open_state;
packet_requirev_state_t open_packet_requirev_state;
LIBSSH2_CHANNEL *open_channel;
unsigned char *open_packet;
size_t open_packet_len;
unsigned char *open_data;
size_t open_data_len;
uint32_t open_local_channel;
/* State variables used in libssh2_channel_direct_tcpip_ex() */
libssh2_nonblocking_states direct_state;
unsigned char *direct_message;
size_t direct_host_len;
size_t direct_shost_len;
size_t direct_message_len;
/* State variables used in libssh2_channel_forward_listen_ex() */
libssh2_nonblocking_states fwdLstn_state;
unsigned char *fwdLstn_packet;
uint32_t fwdLstn_host_len;
uint32_t fwdLstn_packet_len;
packet_requirev_state_t fwdLstn_packet_requirev_state;
/* State variables used in libssh2_publickey_init() */
libssh2_nonblocking_states pkeyInit_state;
LIBSSH2_PUBLICKEY *pkeyInit_pkey;
LIBSSH2_CHANNEL *pkeyInit_channel;
unsigned char *pkeyInit_data;
size_t pkeyInit_data_len;
/* 19 = packet_len(4) + version_len(4) + "version"(7) + version_num(4) */
unsigned char pkeyInit_buffer[19];
size_t pkeyInit_buffer_sent; /* how much of buffer that has been sent */
/* State variables used in libssh2_packet_add() */
libssh2_nonblocking_states packAdd_state;
LIBSSH2_CHANNEL *packAdd_channelp; /* keeper of the channel during EAGAIN
states */
packet_queue_listener_state_t packAdd_Qlstn_state;
packet_x11_open_state_t packAdd_x11open_state;
/* State variables used in fullpacket() */
libssh2_nonblocking_states fullpacket_state;
int fullpacket_macstate;
size_t fullpacket_payload_len;
int fullpacket_packet_type;
/* State variables used in libssh2_sftp_init() */
libssh2_nonblocking_states sftpInit_state;
LIBSSH2_SFTP *sftpInit_sftp;
LIBSSH2_CHANNEL *sftpInit_channel;
unsigned char sftpInit_buffer[9]; /* sftp_header(5){excludes request_id}
+ version_id(4) */
int sftpInit_sent; /* number of bytes from the buffer that have been
sent */
/* State variables used in libssh2_scp_recv() / libssh_scp_recv2() */
libssh2_nonblocking_states scpRecv_state;
unsigned char *scpRecv_command;
size_t scpRecv_command_len;
unsigned char scpRecv_response[LIBSSH2_SCP_RESPONSE_BUFLEN];
size_t scpRecv_response_len;
long scpRecv_mode;
#if defined(HAVE_LONGLONG) && defined(HAVE_STRTOLL)
/* we have the type and we can parse such numbers */
long long scpRecv_size;
#define scpsize_strtol strtoll
#elif defined(HAVE_STRTOI64)
__int64 scpRecv_size;
#define scpsize_strtol _strtoi64
#else
long scpRecv_size;
#define scpsize_strtol strtol
#endif
long scpRecv_mtime;
long scpRecv_atime;
LIBSSH2_CHANNEL *scpRecv_channel;
/* State variables used in libssh2_scp_send_ex() */
libssh2_nonblocking_states scpSend_state;
unsigned char *scpSend_command;
size_t scpSend_command_len;
unsigned char scpSend_response[LIBSSH2_SCP_RESPONSE_BUFLEN];
size_t scpSend_response_len;
LIBSSH2_CHANNEL *scpSend_channel;
/* Keepalive variables used by keepalive.c. */
int keepalive_interval;
int keepalive_want_reply;
time_t keepalive_last_sent;
};
/* session.state bits */
#define LIBSSH2_STATE_EXCHANGING_KEYS 0x00000001
#define LIBSSH2_STATE_NEWKEYS 0x00000002
#define LIBSSH2_STATE_AUTHENTICATED 0x00000004
#define LIBSSH2_STATE_KEX_ACTIVE 0x00000008
/* session.flag helpers */
#ifdef MSG_NOSIGNAL
#define LIBSSH2_SOCKET_SEND_FLAGS(session) \
(((session)->flag.sigpipe) ? 0 : MSG_NOSIGNAL)
#define LIBSSH2_SOCKET_RECV_FLAGS(session) \
(((session)->flag.sigpipe) ? 0 : MSG_NOSIGNAL)
#else
/* If MSG_NOSIGNAL isn't defined we're SOL on blocking SIGPIPE */
#define LIBSSH2_SOCKET_SEND_FLAGS(session) 0
#define LIBSSH2_SOCKET_RECV_FLAGS(session) 0
#endif
/* --------- */
/* libssh2 extensible ssh api, ultimately I'd like to allow loading additional
methods via .so/.dll */
struct _LIBSSH2_KEX_METHOD
{
const char *name;
/* Key exchange, populates session->* and returns 0 on success, non-0 on
error */
int (*exchange_keys) (LIBSSH2_SESSION * session,
key_exchange_state_low_t * key_state);
long flags;
};
struct _LIBSSH2_HOSTKEY_METHOD
{
const char *name;
unsigned long hash_len;
int (*init) (LIBSSH2_SESSION * session, const unsigned char *hostkey_data,
size_t hostkey_data_len, void **abstract);
int (*initPEM) (LIBSSH2_SESSION * session, const char *privkeyfile,
unsigned const char *passphrase, void **abstract);
int (*initPEMFromMemory) (LIBSSH2_SESSION * session,
const char *privkeyfiledata,
size_t privkeyfiledata_len,
unsigned const char *passphrase,
void **abstract);
int (*sig_verify) (LIBSSH2_SESSION * session, const unsigned char *sig,
size_t sig_len, const unsigned char *m,
size_t m_len, void **abstract);
int (*signv) (LIBSSH2_SESSION * session, unsigned char **signature,
size_t *signature_len, int veccount,
const struct iovec datavec[], void **abstract);
int (*encrypt) (LIBSSH2_SESSION * session, unsigned char **dst,
size_t *dst_len, const unsigned char *src,
size_t src_len, void **abstract);
int (*dtor) (LIBSSH2_SESSION * session, void **abstract);
};
struct _LIBSSH2_CRYPT_METHOD
{
const char *name;
const char *pem_annotation;
int blocksize;
/* iv and key sizes (-1 for variable length) */
int iv_len;
int secret_len;
long flags;
int (*init) (LIBSSH2_SESSION * session,
const LIBSSH2_CRYPT_METHOD * method, unsigned char *iv,
int *free_iv, unsigned char *secret, int *free_secret,
int encrypt, void **abstract);
int (*crypt) (LIBSSH2_SESSION * session, unsigned char *block,
size_t blocksize, void **abstract);
int (*dtor) (LIBSSH2_SESSION * session, void **abstract);
_libssh2_cipher_type(algo);
};
struct _LIBSSH2_COMP_METHOD
{
const char *name;
int compress; /* 1 if it does compress, 0 if it doesn't */
int use_in_auth; /* 1 if compression should be used in userauth */
int (*init) (LIBSSH2_SESSION *session, int compress, void **abstract);
int (*comp) (LIBSSH2_SESSION *session,
unsigned char *dest,
size_t *dest_len,
const unsigned char *src,
size_t src_len,
void **abstract);
int (*decomp) (LIBSSH2_SESSION *session,
unsigned char **dest,
size_t *dest_len,
size_t payload_limit,
const unsigned char *src,
size_t src_len,
void **abstract);
int (*dtor) (LIBSSH2_SESSION * session, int compress, void **abstract);
};
#ifdef LIBSSH2DEBUG
void _libssh2_debug(LIBSSH2_SESSION * session, int context, const char *format,
...);
#else
#if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
defined(__GNUC__)
/* C99 supported and also by older GCC */
#define _libssh2_debug(x,y,z,...) do {} while (0)
#else
/* no gcc and not C99, do static and hopefully inline */
static inline void
_libssh2_debug(LIBSSH2_SESSION * session, int context, const char *format, ...)
{
(void)session;
(void)context;
(void)format;
}
#endif
#endif
#define LIBSSH2_SOCKET_UNKNOWN 1
#define LIBSSH2_SOCKET_CONNECTED 0
#define LIBSSH2_SOCKET_DISCONNECTED -1
/* Initial packet state, prior to MAC check */
#define LIBSSH2_MAC_UNCONFIRMED 1
/* When MAC type is "none" (proto initiation phase) all packets are deemed
"confirmed" */
#define LIBSSH2_MAC_CONFIRMED 0
/* Something very bad is going on */
#define LIBSSH2_MAC_INVALID -1
/* Flags for _libssh2_error_flags */
/* Error message is allocated on the heap */
#define LIBSSH2_ERR_FLAG_DUP 1
/* SSH Packet Types -- Defined by internet draft */
/* Transport Layer */
#define SSH_MSG_DISCONNECT 1
#define SSH_MSG_IGNORE 2
#define SSH_MSG_UNIMPLEMENTED 3
#define SSH_MSG_DEBUG 4
#define SSH_MSG_SERVICE_REQUEST 5
#define SSH_MSG_SERVICE_ACCEPT 6
#define SSH_MSG_KEXINIT 20
#define SSH_MSG_NEWKEYS 21
/* diffie-hellman-group1-sha1 */
#define SSH_MSG_KEXDH_INIT 30
#define SSH_MSG_KEXDH_REPLY 31
/* diffie-hellman-group-exchange-sha1 and
diffie-hellman-group-exchange-sha256 */
#define SSH_MSG_KEX_DH_GEX_REQUEST_OLD 30
#define SSH_MSG_KEX_DH_GEX_REQUEST 34
#define SSH_MSG_KEX_DH_GEX_GROUP 31
#define SSH_MSG_KEX_DH_GEX_INIT 32
#define SSH_MSG_KEX_DH_GEX_REPLY 33
/* ecdh */
#define SSH2_MSG_KEX_ECDH_INIT 30
#define SSH2_MSG_KEX_ECDH_REPLY 31
/* User Authentication */
#define SSH_MSG_USERAUTH_REQUEST 50
#define SSH_MSG_USERAUTH_FAILURE 51
#define SSH_MSG_USERAUTH_SUCCESS 52
#define SSH_MSG_USERAUTH_BANNER 53
/* "public key" method */
#define SSH_MSG_USERAUTH_PK_OK 60
/* "password" method */
#define SSH_MSG_USERAUTH_PASSWD_CHANGEREQ 60
/* "keyboard-interactive" method */
#define SSH_MSG_USERAUTH_INFO_REQUEST 60
#define SSH_MSG_USERAUTH_INFO_RESPONSE 61
/* Channels */
#define SSH_MSG_GLOBAL_REQUEST 80
#define SSH_MSG_REQUEST_SUCCESS 81
#define SSH_MSG_REQUEST_FAILURE 82
#define SSH_MSG_CHANNEL_OPEN 90
#define SSH_MSG_CHANNEL_OPEN_CONFIRMATION 91
#define SSH_MSG_CHANNEL_OPEN_FAILURE 92
#define SSH_MSG_CHANNEL_WINDOW_ADJUST 93
#define SSH_MSG_CHANNEL_DATA 94
#define SSH_MSG_CHANNEL_EXTENDED_DATA 95
#define SSH_MSG_CHANNEL_EOF 96
#define SSH_MSG_CHANNEL_CLOSE 97
#define SSH_MSG_CHANNEL_REQUEST 98
#define SSH_MSG_CHANNEL_SUCCESS 99
#define SSH_MSG_CHANNEL_FAILURE 100
/* Error codes returned in SSH_MSG_CHANNEL_OPEN_FAILURE message
(see RFC4254) */
#define SSH_OPEN_ADMINISTRATIVELY_PROHIBITED 1
#define SSH_OPEN_CONNECT_FAILED 2
#define SSH_OPEN_UNKNOWN_CHANNELTYPE 3
#define SSH_OPEN_RESOURCE_SHORTAGE 4
ssize_t _libssh2_recv(libssh2_socket_t socket, void *buffer,
size_t length, int flags, void **abstract);
ssize_t _libssh2_send(libssh2_socket_t socket, const void *buffer,
size_t length, int flags, void **abstract);
#define LIBSSH2_READ_TIMEOUT 60 /* generic timeout in seconds used when
waiting for more data to arrive */
int _libssh2_kex_exchange(LIBSSH2_SESSION * session, int reexchange,
key_exchange_state_t * state);
/* Let crypt.c/hostkey.c expose their method structs */
const LIBSSH2_CRYPT_METHOD **libssh2_crypt_methods(void);
const LIBSSH2_HOSTKEY_METHOD **libssh2_hostkey_methods(void);
/* misc.c */
int _libssh2_bcrypt_pbkdf(const char *pass,
size_t passlen,
const uint8_t *salt,
size_t saltlen,
uint8_t *key,
size_t keylen,
unsigned int rounds);
/* pem.c */
int _libssh2_pem_parse(LIBSSH2_SESSION * session,
const char *headerbegin,
const char *headerend,
const unsigned char *passphrase,
FILE * fp, unsigned char **data, unsigned int *datalen);
int _libssh2_pem_parse_memory(LIBSSH2_SESSION * session,
const char *headerbegin,
const char *headerend,
const char *filedata, size_t filedata_len,
unsigned char **data, unsigned int *datalen);
/* OpenSSL keys */
int
_libssh2_openssh_pem_parse(LIBSSH2_SESSION * session,
const unsigned char *passphrase,
FILE * fp, struct string_buf **decrypted_buf);
int
_libssh2_openssh_pem_parse_memory(LIBSSH2_SESSION * session,
const unsigned char *passphrase,
const char *filedata, size_t filedata_len,
struct string_buf **decrypted_buf);
int _libssh2_pem_decode_sequence(unsigned char **data, unsigned int *datalen);
int _libssh2_pem_decode_integer(unsigned char **data, unsigned int *datalen,
unsigned char **i, unsigned int *ilen);
/* global.c */
void _libssh2_init_if_needed(void);
#define ARRAY_SIZE(a) (sizeof ((a)) / sizeof ((a)[0]))
/* define to output the libssh2_int64_t type in a *printf() */
#if defined(__BORLANDC__) || defined(_MSC_VER) || defined(__MINGW32__)
#define LIBSSH2_INT64_T_FORMAT "I64d"
#else
#define LIBSSH2_INT64_T_FORMAT "lld"
#endif
/* In Windows the default file mode is text but an application can override it.
Therefore we specify it explicitly. https://github.com/curl/curl/pull/258
*/
#if defined(WIN32) || defined(MSDOS)
#define FOPEN_READTEXT "rt"
#define FOPEN_WRITETEXT "wt"
#define FOPEN_APPENDTEXT "at"
#elif defined(__CYGWIN__)
/* Cygwin has specific behavior we need to address when WIN32 is not defined.
https://cygwin.com/cygwin-ug-net/using-textbinary.html
For write we want our output to have line endings of LF and be compatible with
other Cygwin utilities. For read we want to handle input that may have line
endings either CRLF or LF so 't' is appropriate.
*/
#define FOPEN_READTEXT "rt"
#define FOPEN_WRITETEXT "w"
#define FOPEN_APPENDTEXT "a"
#else
#define FOPEN_READTEXT "r"
#define FOPEN_WRITETEXT "w"
#define FOPEN_APPENDTEXT "a"
#endif
#endif /* __LIBSSH2_PRIV_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/libssh2_config_cmake.h.in | /* Copyright (c) 2014 Alexander Lamaison <[email protected]>
* Copyright (c) 1999-2011 Douglas Gilbert. All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
/* Headers */
#cmakedefine HAVE_UNISTD_H
#cmakedefine HAVE_INTTYPES_H
#cmakedefine HAVE_STDLIB_H
#cmakedefine HAVE_SYS_SELECT_H
#cmakedefine HAVE_SYS_UIO_H
#cmakedefine HAVE_SYS_SOCKET_H
#cmakedefine HAVE_SYS_IOCTL_H
#cmakedefine HAVE_SYS_TIME_H
#cmakedefine HAVE_SYS_UN_H
#cmakedefine HAVE_WINDOWS_H
#cmakedefine HAVE_WS2TCPIP_H
#cmakedefine HAVE_WINSOCK2_H
#cmakedefine HAVE_NTDEF_H
#cmakedefine HAVE_NTSTATUS_H
/* Libraries */
#cmakedefine HAVE_LIBCRYPT32
/* Types */
#cmakedefine HAVE_LONGLONG
/* Functions */
#cmakedefine HAVE_GETTIMEOFDAY
#cmakedefine HAVE_INET_ADDR
#cmakedefine HAVE_POLL
#cmakedefine HAVE_SELECT
#cmakedefine HAVE_SOCKET
#cmakedefine HAVE_STRTOLL
#cmakedefine HAVE_STRTOI64
#cmakedefine HAVE_SNPRINTF
/* OpenSSL functions */
#cmakedefine HAVE_EVP_AES_128_CTR
/* Socket non-blocking support */
#cmakedefine HAVE_O_NONBLOCK
#cmakedefine HAVE_FIONBIO
#cmakedefine HAVE_IOCTLSOCKET
#cmakedefine HAVE_IOCTLSOCKET_CASE
#cmakedefine HAVE_SO_NONBLOCK
#cmakedefine HAVE_DISABLED_NONBLOCKING
/* snprintf not in Visual Studio CRT and _snprintf dangerously incompatible.
We provide a safe wrapper if snprintf not found */
#ifndef HAVE_SNPRINTF
#include <stdio.h>
#include <stdarg.h>
/* Want safe, 'n += snprintf(b + n ...)' like function. If cp_max_len is 1
* then assume cp is pointing to a null char and do nothing. Returns number
* number of chars placed in cp excluding the trailing null char. So for
* cp_max_len > 0 the return value is always < cp_max_len; for cp_max_len
* <= 0 the return value is 0 (and no chars are written to cp). */
static int snprintf(char * cp, int cp_max_len, const char * fmt, ...)
{
va_list args;
int n;
if (cp_max_len < 2)
return 0;
va_start(args, fmt);
n = vsnprintf(cp, cp_max_len, fmt, args);
va_end(args);
return (n < cp_max_len) ? n : (cp_max_len - 1);
}
#define HAVE_SNPRINTF
#endif
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/sftp.c | /* Copyright (c) 2004-2008, Sara Golemon <[email protected]>
* Copyright (c) 2007 Eli Fant <[email protected]>
* Copyright (c) 2009-2019 by Daniel Stenberg
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include <assert.h>
#include "libssh2_priv.h"
#include "libssh2_sftp.h"
#include "channel.h"
#include "session.h"
#include "sftp.h"
/* Note: Version 6 was documented at the time of writing
* However it was marked as "DO NOT IMPLEMENT" due to pending changes
*
* This release of libssh2 implements Version 5 with automatic downgrade
* based on server's declaration
*/
/* SFTP packet types */
#define SSH_FXP_INIT 1
#define SSH_FXP_VERSION 2
#define SSH_FXP_OPEN 3
#define SSH_FXP_CLOSE 4
#define SSH_FXP_READ 5
#define SSH_FXP_WRITE 6
#define SSH_FXP_LSTAT 7
#define SSH_FXP_FSTAT 8
#define SSH_FXP_SETSTAT 9
#define SSH_FXP_FSETSTAT 10
#define SSH_FXP_OPENDIR 11
#define SSH_FXP_READDIR 12
#define SSH_FXP_REMOVE 13
#define SSH_FXP_MKDIR 14
#define SSH_FXP_RMDIR 15
#define SSH_FXP_REALPATH 16
#define SSH_FXP_STAT 17
#define SSH_FXP_RENAME 18
#define SSH_FXP_READLINK 19
#define SSH_FXP_SYMLINK 20
#define SSH_FXP_STATUS 101
#define SSH_FXP_HANDLE 102
#define SSH_FXP_DATA 103
#define SSH_FXP_NAME 104
#define SSH_FXP_ATTRS 105
#define SSH_FXP_EXTENDED 200
#define SSH_FXP_EXTENDED_REPLY 201
/* S_IFREG */
#define LIBSSH2_SFTP_ATTR_PFILETYPE_FILE 0100000
/* S_IFDIR */
#define LIBSSH2_SFTP_ATTR_PFILETYPE_DIR 0040000
#define SSH_FXE_STATVFS_ST_RDONLY 0x00000001
#define SSH_FXE_STATVFS_ST_NOSUID 0x00000002
/* This is the maximum packet length to accept, as larger than this indicate
some kind of server problem. */
#define LIBSSH2_SFTP_PACKET_MAXLEN (256 * 1024)
static int sftp_packet_ask(LIBSSH2_SFTP *sftp, unsigned char packet_type,
uint32_t request_id, unsigned char **data,
size_t *data_len);
static void sftp_packet_flush(LIBSSH2_SFTP *sftp);
/* sftp_attrsize
* Size that attr with this flagset will occupy when turned into a bin struct
*/
static int sftp_attrsize(unsigned long flags)
{
return (4 + /* flags(4) */
((flags & LIBSSH2_SFTP_ATTR_SIZE) ? 8 : 0) +
((flags & LIBSSH2_SFTP_ATTR_UIDGID) ? 8 : 0) +
((flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) ? 4 : 0) +
((flags & LIBSSH2_SFTP_ATTR_ACMODTIME) ? 8 : 0));
/* atime + mtime as u32 */
}
/* _libssh2_store_u64
*/
static void _libssh2_store_u64(unsigned char **ptr, libssh2_uint64_t value)
{
uint32_t msl = (uint32_t)(value >> 32);
unsigned char *buf = *ptr;
buf[0] = (unsigned char)((msl >> 24) & 0xFF);
buf[1] = (unsigned char)((msl >> 16) & 0xFF);
buf[2] = (unsigned char)((msl >> 8) & 0xFF);
buf[3] = (unsigned char)( msl & 0xFF);
buf[4] = (unsigned char)((value >> 24) & 0xFF);
buf[5] = (unsigned char)((value >> 16) & 0xFF);
buf[6] = (unsigned char)((value >> 8) & 0xFF);
buf[7] = (unsigned char)( value & 0xFF);
*ptr += 8;
}
/*
* Search list of zombied FXP_READ request IDs.
*
* Returns NULL if ID not in list.
*/
static struct sftp_zombie_requests *
find_zombie_request(LIBSSH2_SFTP *sftp, uint32_t request_id)
{
struct sftp_zombie_requests *zombie =
_libssh2_list_first(&sftp->zombie_requests);
while(zombie) {
if(zombie->request_id == request_id)
break;
else
zombie = _libssh2_list_next(&zombie->node);
}
return zombie;
}
static void
remove_zombie_request(LIBSSH2_SFTP *sftp, uint32_t request_id)
{
LIBSSH2_SESSION *session = sftp->channel->session;
struct sftp_zombie_requests *zombie = find_zombie_request(sftp,
request_id);
if(zombie) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Removing request ID %ld from the list of "
"zombie requests",
request_id);
_libssh2_list_remove(&zombie->node);
LIBSSH2_FREE(session, zombie);
}
}
static int
add_zombie_request(LIBSSH2_SFTP *sftp, uint32_t request_id)
{
LIBSSH2_SESSION *session = sftp->channel->session;
struct sftp_zombie_requests *zombie;
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Marking request ID %ld as a zombie request", request_id);
zombie = LIBSSH2_ALLOC(sftp->channel->session,
sizeof(struct sftp_zombie_requests));
if(!zombie)
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"malloc fail for zombie request ID");
else {
zombie->request_id = request_id;
_libssh2_list_add(&sftp->zombie_requests, &zombie->node);
return LIBSSH2_ERROR_NONE;
}
}
/*
* sftp_packet_add
*
* Add a packet to the SFTP packet brigade
*/
static int
sftp_packet_add(LIBSSH2_SFTP *sftp, unsigned char *data,
size_t data_len)
{
LIBSSH2_SESSION *session = sftp->channel->session;
LIBSSH2_SFTP_PACKET *packet;
uint32_t request_id;
if(data_len < 5) {
return LIBSSH2_ERROR_OUT_OF_BOUNDARY;
}
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Received packet type %d (len %d)",
(int) data[0], data_len);
/*
* Experience shows that if we mess up EAGAIN handling somewhere or
* otherwise get out of sync with the channel, this is where we first get
* a wrong byte and if so we need to bail out at once to aid tracking the
* problem better.
*/
switch(data[0]) {
case SSH_FXP_INIT:
case SSH_FXP_VERSION:
case SSH_FXP_OPEN:
case SSH_FXP_CLOSE:
case SSH_FXP_READ:
case SSH_FXP_WRITE:
case SSH_FXP_LSTAT:
case SSH_FXP_FSTAT:
case SSH_FXP_SETSTAT:
case SSH_FXP_FSETSTAT:
case SSH_FXP_OPENDIR:
case SSH_FXP_READDIR:
case SSH_FXP_REMOVE:
case SSH_FXP_MKDIR:
case SSH_FXP_RMDIR:
case SSH_FXP_REALPATH:
case SSH_FXP_STAT:
case SSH_FXP_RENAME:
case SSH_FXP_READLINK:
case SSH_FXP_SYMLINK:
case SSH_FXP_STATUS:
case SSH_FXP_HANDLE:
case SSH_FXP_DATA:
case SSH_FXP_NAME:
case SSH_FXP_ATTRS:
case SSH_FXP_EXTENDED:
case SSH_FXP_EXTENDED_REPLY:
break;
default:
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Out of sync with the world");
}
request_id = _libssh2_ntohu32(&data[1]);
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "Received packet id %d",
request_id);
/* Don't add the packet if it answers a request we've given up on. */
if((data[0] == SSH_FXP_STATUS || data[0] == SSH_FXP_DATA)
&& find_zombie_request(sftp, request_id)) {
/* If we get here, the file ended before the response arrived. We
are no longer interested in the request so we discard it */
LIBSSH2_FREE(session, data);
remove_zombie_request(sftp, request_id);
return LIBSSH2_ERROR_NONE;
}
packet = LIBSSH2_ALLOC(session, sizeof(LIBSSH2_SFTP_PACKET));
if(!packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate datablock for SFTP packet");
}
packet->data = data;
packet->data_len = data_len;
packet->request_id = request_id;
_libssh2_list_add(&sftp->packets, &packet->node);
return LIBSSH2_ERROR_NONE;
}
/*
* sftp_packet_read
*
* Frame an SFTP packet off the channel
*/
static int
sftp_packet_read(LIBSSH2_SFTP *sftp)
{
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
unsigned char *packet = NULL;
ssize_t rc;
unsigned long recv_window;
int packet_type;
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "recv packet");
switch(sftp->packet_state) {
case libssh2_NB_state_sent: /* EAGAIN from window adjusting */
sftp->packet_state = libssh2_NB_state_idle;
packet = sftp->partial_packet;
goto window_adjust;
case libssh2_NB_state_sent1: /* EAGAIN from channel read */
sftp->packet_state = libssh2_NB_state_idle;
packet = sftp->partial_packet;
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"partial read cont, len: %lu", sftp->partial_len);
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"partial read cont, already recvd: %lu",
sftp->partial_received);
/* fall-through */
default:
if(!packet) {
/* only do this if there's not already a packet buffer allocated
to use */
/* each packet starts with a 32 bit length field */
rc = _libssh2_channel_read(channel, 0,
(char *)&sftp->partial_size[
sftp->partial_size_len],
4 - sftp->partial_size_len);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
else if(rc < 0)
return _libssh2_error(session, rc, "channel read");
sftp->partial_size_len += rc;
if(4 != sftp->partial_size_len)
/* we got a short read for the length part */
return LIBSSH2_ERROR_EAGAIN;
sftp->partial_len = _libssh2_ntohu32(sftp->partial_size);
/* make sure we don't proceed if the packet size is unreasonably
large */
if(sftp->partial_len > LIBSSH2_SFTP_PACKET_MAXLEN) {
libssh2_channel_flush(channel);
sftp->partial_size_len = 0;
return _libssh2_error(session,
LIBSSH2_ERROR_CHANNEL_PACKET_EXCEEDED,
"SFTP packet too large");
}
if(sftp->partial_len == 0)
return _libssh2_error(session,
LIBSSH2_ERROR_ALLOC,
"Unable to allocate empty SFTP packet");
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Data begin - Packet Length: %lu",
sftp->partial_len);
packet = LIBSSH2_ALLOC(session, sftp->partial_len);
if(!packet)
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate SFTP packet");
sftp->partial_size_len = 0;
sftp->partial_received = 0; /* how much of the packet already
received */
sftp->partial_packet = packet;
window_adjust:
recv_window = libssh2_channel_window_read_ex(channel, NULL, NULL);
if(sftp->partial_len > recv_window) {
/* ask for twice the data amount we need at once */
rc = _libssh2_channel_receive_window_adjust(channel,
sftp->partial_len
* 2,
1, NULL);
/* store the state so that we continue with the correct
operation at next invoke */
sftp->packet_state = (rc == LIBSSH2_ERROR_EAGAIN)?
libssh2_NB_state_sent:
libssh2_NB_state_idle;
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
}
}
/* Read as much of the packet as we can */
while(sftp->partial_len > sftp->partial_received) {
rc = _libssh2_channel_read(channel, 0,
(char *)&packet[sftp->partial_received],
sftp->partial_len -
sftp->partial_received);
if(rc == LIBSSH2_ERROR_EAGAIN) {
/*
* We received EAGAIN, save what we have and return EAGAIN to
* the caller. Set 'partial_packet' so that this function
* knows how to continue on the next invoke.
*/
sftp->packet_state = libssh2_NB_state_sent1;
return rc;
}
else if(rc < 0) {
LIBSSH2_FREE(session, packet);
sftp->partial_packet = NULL;
return _libssh2_error(session, rc,
"Error waiting for SFTP packet");
}
sftp->partial_received += rc;
}
sftp->partial_packet = NULL;
/* sftp_packet_add takes ownership of the packet and might free it
so we take a copy of the packet type before we call it. */
packet_type = packet[0];
rc = sftp_packet_add(sftp, packet, sftp->partial_len);
if(rc) {
LIBSSH2_FREE(session, packet);
return rc;
}
else {
return packet_type;
}
}
/* WON'T REACH */
}
/*
* sftp_packetlist_flush
*
* Remove all pending packets in the packet_list and the corresponding one(s)
* in the SFTP packet brigade.
*/
static void sftp_packetlist_flush(LIBSSH2_SFTP_HANDLE *handle)
{
struct sftp_pipeline_chunk *chunk;
LIBSSH2_SFTP *sftp = handle->sftp;
LIBSSH2_SESSION *session = sftp->channel->session;
/* remove pending packets, if any */
chunk = _libssh2_list_first(&handle->packet_list);
while(chunk) {
unsigned char *data;
size_t data_len;
int rc;
struct sftp_pipeline_chunk *next = _libssh2_list_next(&chunk->node);
rc = sftp_packet_ask(sftp, SSH_FXP_STATUS,
chunk->request_id, &data, &data_len);
if(rc)
rc = sftp_packet_ask(sftp, SSH_FXP_DATA,
chunk->request_id, &data, &data_len);
if(!rc)
/* we found a packet, free it */
LIBSSH2_FREE(session, data);
else if(chunk->sent)
/* there was no incoming packet for this request, mark this
request as a zombie if it ever sent the request */
add_zombie_request(sftp, chunk->request_id);
_libssh2_list_remove(&chunk->node);
LIBSSH2_FREE(session, chunk);
chunk = next;
}
}
/*
* sftp_packet_ask()
*
* Checks if there's a matching SFTP packet available.
*/
static int
sftp_packet_ask(LIBSSH2_SFTP *sftp, unsigned char packet_type,
uint32_t request_id, unsigned char **data,
size_t *data_len)
{
LIBSSH2_SESSION *session = sftp->channel->session;
LIBSSH2_SFTP_PACKET *packet = _libssh2_list_first(&sftp->packets);
if(!packet)
return -1;
/* Special consideration when getting VERSION packet */
while(packet) {
if((packet->data[0] == packet_type) &&
((packet_type == SSH_FXP_VERSION) ||
(packet->request_id == request_id))) {
/* Match! Fetch the data */
*data = packet->data;
*data_len = packet->data_len;
/* unlink and free this struct */
_libssh2_list_remove(&packet->node);
LIBSSH2_FREE(session, packet);
return 0;
}
/* check next struct in the list */
packet = _libssh2_list_next(&packet->node);
}
return -1;
}
/* sftp_packet_require
* A la libssh2_packet_require
*/
static int
sftp_packet_require(LIBSSH2_SFTP *sftp, unsigned char packet_type,
uint32_t request_id, unsigned char **data,
size_t *data_len, size_t required_size)
{
LIBSSH2_SESSION *session = sftp->channel->session;
int rc;
if(data == NULL || data_len == NULL || required_size == 0) {
return LIBSSH2_ERROR_BAD_USE;
}
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "Requiring packet %d id %ld",
(int) packet_type, request_id);
if(sftp_packet_ask(sftp, packet_type, request_id, data, data_len) == 0) {
/* The right packet was available in the packet brigade */
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "Got %d",
(int) packet_type);
if (*data_len < required_size) {
return LIBSSH2_ERROR_BUFFER_TOO_SMALL;
}
return LIBSSH2_ERROR_NONE;
}
while(session->socket_state == LIBSSH2_SOCKET_CONNECTED) {
rc = sftp_packet_read(sftp);
if(rc < 0)
return rc;
/* data was read, check the queue again */
if(!sftp_packet_ask(sftp, packet_type, request_id, data, data_len)) {
/* The right packet was available in the packet brigade */
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "Got %d",
(int) packet_type);
if (*data_len < required_size) {
return LIBSSH2_ERROR_BUFFER_TOO_SMALL;
}
return LIBSSH2_ERROR_NONE;
}
}
/* Only reached if the socket died */
return LIBSSH2_ERROR_SOCKET_DISCONNECT;
}
/* sftp_packet_requirev
* Require one of N possible responses
*/
static int
sftp_packet_requirev(LIBSSH2_SFTP *sftp, int num_valid_responses,
const unsigned char *valid_responses,
uint32_t request_id, unsigned char **data,
size_t *data_len, size_t required_size)
{
int i;
int rc;
if(data == NULL || data_len == NULL || required_size == 0) {
return LIBSSH2_ERROR_BAD_USE;
}
/* If no timeout is active, start a new one */
if(sftp->requirev_start == 0)
sftp->requirev_start = time(NULL);
while(sftp->channel->session->socket_state == LIBSSH2_SOCKET_CONNECTED) {
for(i = 0; i < num_valid_responses; i++) {
if(sftp_packet_ask(sftp, valid_responses[i], request_id,
data, data_len) == 0) {
/*
* Set to zero before all returns to say
* the timeout is not active
*/
sftp->requirev_start = 0;
if (*data_len < required_size) {
return LIBSSH2_ERROR_BUFFER_TOO_SMALL;
}
return LIBSSH2_ERROR_NONE;
}
}
rc = sftp_packet_read(sftp);
if((rc < 0) && (rc != LIBSSH2_ERROR_EAGAIN)) {
sftp->requirev_start = 0;
return rc;
}
else if(rc <= 0) {
/* prevent busy-looping */
long left =
LIBSSH2_READ_TIMEOUT -
(long)(time(NULL) - sftp->requirev_start);
if(left <= 0) {
sftp->requirev_start = 0;
return LIBSSH2_ERROR_TIMEOUT;
}
else if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
}
}
sftp->requirev_start = 0;
/* Only reached if the socket died */
return LIBSSH2_ERROR_SOCKET_DISCONNECT;
}
/* sftp_attr2bin
* Populate attributes into an SFTP block
*/
static ssize_t
sftp_attr2bin(unsigned char *p, const LIBSSH2_SFTP_ATTRIBUTES * attrs)
{
unsigned char *s = p;
uint32_t flag_mask =
LIBSSH2_SFTP_ATTR_SIZE | LIBSSH2_SFTP_ATTR_UIDGID |
LIBSSH2_SFTP_ATTR_PERMISSIONS | LIBSSH2_SFTP_ATTR_ACMODTIME;
/* TODO: When we add SFTP4+ functionality flag_mask can get additional
bits */
if(!attrs) {
_libssh2_htonu32(s, 0);
return 4;
}
_libssh2_store_u32(&s, attrs->flags & flag_mask);
if(attrs->flags & LIBSSH2_SFTP_ATTR_SIZE) {
_libssh2_store_u64(&s, attrs->filesize);
}
if(attrs->flags & LIBSSH2_SFTP_ATTR_UIDGID) {
_libssh2_store_u32(&s, attrs->uid);
_libssh2_store_u32(&s, attrs->gid);
}
if(attrs->flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) {
_libssh2_store_u32(&s, attrs->permissions);
}
if(attrs->flags & LIBSSH2_SFTP_ATTR_ACMODTIME) {
_libssh2_store_u32(&s, attrs->atime);
_libssh2_store_u32(&s, attrs->mtime);
}
return (s - p);
}
/* sftp_bin2attr
*/
static int
sftp_bin2attr(LIBSSH2_SFTP_ATTRIBUTES *attrs, const unsigned char *p,
size_t data_len)
{
struct string_buf buf;
uint32_t flags = 0;
buf.data = (unsigned char *)p;
buf.dataptr = buf.data;
buf.len = data_len;
if(_libssh2_get_u32(&buf, &flags) != 0) {
return LIBSSH2_ERROR_BUFFER_TOO_SMALL;
}
attrs->flags = flags;
if(attrs->flags & LIBSSH2_SFTP_ATTR_SIZE) {
if(_libssh2_get_u64(&buf, &(attrs->filesize)) != 0) {
return LIBSSH2_ERROR_BUFFER_TOO_SMALL;
}
}
if(attrs->flags & LIBSSH2_SFTP_ATTR_UIDGID) {
uint32_t uid = 0;
uint32_t gid = 0;
if(_libssh2_get_u32(&buf, &uid) != 0 ||
_libssh2_get_u32(&buf, &gid) != 0) {
return LIBSSH2_ERROR_BUFFER_TOO_SMALL;
}
attrs->uid = uid;
attrs->gid = gid;
}
if(attrs->flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) {
uint32_t permissions;
if(_libssh2_get_u32(&buf, &permissions) != 0) {
return LIBSSH2_ERROR_BUFFER_TOO_SMALL;
}
attrs->permissions = permissions;
}
if(attrs->flags & LIBSSH2_SFTP_ATTR_ACMODTIME) {
uint32_t atime;
uint32_t mtime;
if(_libssh2_get_u32(&buf, &atime) != 0 ||
_libssh2_get_u32(&buf, &mtime) != 0) {
return LIBSSH2_ERROR_BUFFER_TOO_SMALL;
}
attrs->atime = atime;
attrs->mtime = mtime;
}
return (buf.dataptr - buf.data);
}
/* ************
* SFTP API *
************ */
LIBSSH2_CHANNEL_CLOSE_FUNC(libssh2_sftp_dtor);
/* libssh2_sftp_dtor
* Shutdown an SFTP stream when the channel closes
*/
LIBSSH2_CHANNEL_CLOSE_FUNC(libssh2_sftp_dtor)
{
LIBSSH2_SFTP *sftp = (LIBSSH2_SFTP *) (*channel_abstract);
(void) session_abstract;
(void) channel;
/* Free the partial packet storage for sftp_packet_read */
if(sftp->partial_packet) {
LIBSSH2_FREE(session, sftp->partial_packet);
}
/* Free the packet storage for _libssh2_sftp_packet_readdir */
if(sftp->readdir_packet) {
LIBSSH2_FREE(session, sftp->readdir_packet);
}
LIBSSH2_FREE(session, sftp);
}
/*
* sftp_init
*
* Startup an SFTP session
*/
static LIBSSH2_SFTP *sftp_init(LIBSSH2_SESSION *session)
{
unsigned char *data;
size_t data_len = 0;
ssize_t rc;
LIBSSH2_SFTP *sftp_handle;
struct string_buf buf;
unsigned char *endp;
if(session->sftpInit_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Initializing SFTP subsystem");
/*
* The 'sftpInit_sftp' and 'sftpInit_channel' struct fields within the
* session struct are only to be used during the setup phase. As soon
* as the SFTP session is created they are cleared and can thus be
* re-used again to allow any amount of SFTP handles per sessions.
*
* Note that you MUST NOT try to call libssh2_sftp_init() again to get
* another handle until the previous call has finished and either
* successfully made a handle or failed and returned error (not
* including *EAGAIN).
*/
assert(session->sftpInit_sftp == NULL);
session->sftpInit_sftp = NULL;
session->sftpInit_state = libssh2_NB_state_created;
}
sftp_handle = session->sftpInit_sftp;
if(session->sftpInit_state == libssh2_NB_state_created) {
session->sftpInit_channel =
_libssh2_channel_open(session, "session", sizeof("session") - 1,
LIBSSH2_CHANNEL_WINDOW_DEFAULT,
LIBSSH2_CHANNEL_PACKET_DEFAULT, NULL, 0);
if(!session->sftpInit_channel) {
if(libssh2_session_last_errno(session) == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block starting up channel");
}
else {
_libssh2_error(session, LIBSSH2_ERROR_CHANNEL_FAILURE,
"Unable to startup channel");
session->sftpInit_state = libssh2_NB_state_idle;
}
return NULL;
}
session->sftpInit_state = libssh2_NB_state_sent;
}
if(session->sftpInit_state == libssh2_NB_state_sent) {
int ret = _libssh2_channel_process_startup(session->sftpInit_channel,
"subsystem",
sizeof("subsystem") - 1,
"sftp",
strlen("sftp"));
if(ret == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block to request SFTP subsystem");
return NULL;
}
else if(ret) {
_libssh2_error(session, LIBSSH2_ERROR_CHANNEL_FAILURE,
"Unable to request SFTP subsystem");
goto sftp_init_error;
}
session->sftpInit_state = libssh2_NB_state_sent1;
}
if(session->sftpInit_state == libssh2_NB_state_sent1) {
rc = _libssh2_channel_extended_data(session->sftpInit_channel,
LIBSSH2_CHANNEL_EXTENDED_DATA_IGNORE);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block requesting handle extended data");
return NULL;
}
sftp_handle =
session->sftpInit_sftp =
LIBSSH2_CALLOC(session, sizeof(LIBSSH2_SFTP));
if(!sftp_handle) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate a new SFTP structure");
goto sftp_init_error;
}
sftp_handle->channel = session->sftpInit_channel;
sftp_handle->request_id = 0;
_libssh2_htonu32(session->sftpInit_buffer, 5);
session->sftpInit_buffer[4] = SSH_FXP_INIT;
_libssh2_htonu32(session->sftpInit_buffer + 5, LIBSSH2_SFTP_VERSION);
session->sftpInit_sent = 0; /* nothing's sent yet */
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Sending FXP_INIT packet advertising "
"version %d support",
(int) LIBSSH2_SFTP_VERSION);
session->sftpInit_state = libssh2_NB_state_sent2;
}
if(session->sftpInit_state == libssh2_NB_state_sent2) {
/* sent off what's left of the init buffer to send */
rc = _libssh2_channel_write(session->sftpInit_channel, 0,
session->sftpInit_buffer +
session->sftpInit_sent,
9 - session->sftpInit_sent);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block sending SSH_FXP_INIT");
return NULL;
}
else if(rc < 0) {
_libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send SSH_FXP_INIT");
goto sftp_init_error;
}
else {
/* add up the number of bytes sent */
session->sftpInit_sent += rc;
if(session->sftpInit_sent == 9)
/* move on */
session->sftpInit_state = libssh2_NB_state_sent3;
/* if less than 9, we remain in this state to send more later on */
}
}
rc = sftp_packet_require(sftp_handle, SSH_FXP_VERSION,
0, &data, &data_len, 5);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block receiving SSH_FXP_VERSION");
return NULL;
}
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
_libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Invalid SSH_FXP_VERSION response");
goto sftp_init_error;
}
else if(rc) {
_libssh2_error(session, rc,
"Timeout waiting for response from SFTP subsystem");
goto sftp_init_error;
}
buf.data = data;
buf.dataptr = buf.data + 1;
buf.len = data_len;
endp = &buf.data[data_len];
if(_libssh2_get_u32(&buf, &(sftp_handle->version)) != 0) {
LIBSSH2_FREE(session, data);
rc = LIBSSH2_ERROR_BUFFER_TOO_SMALL;
goto sftp_init_error;
}
if(sftp_handle->version > LIBSSH2_SFTP_VERSION) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Truncating remote SFTP version from %lu",
sftp_handle->version);
sftp_handle->version = LIBSSH2_SFTP_VERSION;
}
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Enabling SFTP version %lu compatibility",
sftp_handle->version);
while(buf.dataptr < endp) {
unsigned char *extname, *extdata;
if(_libssh2_get_string(&buf, &extname, NULL)) {
LIBSSH2_FREE(session, data);
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Data too short when extracting extname");
goto sftp_init_error;
}
if(_libssh2_get_string(&buf, &extdata, NULL)) {
LIBSSH2_FREE(session, data);
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Data too short when extracting extdata");
goto sftp_init_error;
}
}
LIBSSH2_FREE(session, data);
/* Make sure that when the channel gets closed, the SFTP service is shut
down too */
sftp_handle->channel->abstract = sftp_handle;
sftp_handle->channel->close_cb = libssh2_sftp_dtor;
session->sftpInit_state = libssh2_NB_state_idle;
/* clear the sftp and channel pointers in this session struct now */
session->sftpInit_sftp = NULL;
session->sftpInit_channel = NULL;
_libssh2_list_init(&sftp_handle->sftp_handles);
return sftp_handle;
sftp_init_error:
while(_libssh2_channel_free(session->sftpInit_channel) ==
LIBSSH2_ERROR_EAGAIN);
session->sftpInit_channel = NULL;
if(session->sftpInit_sftp) {
LIBSSH2_FREE(session, session->sftpInit_sftp);
session->sftpInit_sftp = NULL;
}
session->sftpInit_state = libssh2_NB_state_idle;
return NULL;
}
/*
* libssh2_sftp_init
*
* Startup an SFTP session
*/
LIBSSH2_API LIBSSH2_SFTP *libssh2_sftp_init(LIBSSH2_SESSION *session)
{
LIBSSH2_SFTP *ptr;
if(!session)
return NULL;
if(!(session->state & LIBSSH2_STATE_AUTHENTICATED)) {
_libssh2_error(session, LIBSSH2_ERROR_INVAL,
"session not authenticated yet");
return NULL;
}
BLOCK_ADJUST_ERRNO(ptr, session, sftp_init(session));
return ptr;
}
/*
* sftp_shutdown
*
* Shuts down the SFTP subsystem
*/
static int
sftp_shutdown(LIBSSH2_SFTP *sftp)
{
int rc;
LIBSSH2_SESSION *session = sftp->channel->session;
/*
* Make sure all memory used in the state variables are free
*/
if(sftp->partial_packet) {
LIBSSH2_FREE(session, sftp->partial_packet);
sftp->partial_packet = NULL;
}
if(sftp->open_packet) {
LIBSSH2_FREE(session, sftp->open_packet);
sftp->open_packet = NULL;
}
if(sftp->readdir_packet) {
LIBSSH2_FREE(session, sftp->readdir_packet);
sftp->readdir_packet = NULL;
}
if(sftp->fstat_packet) {
LIBSSH2_FREE(session, sftp->fstat_packet);
sftp->fstat_packet = NULL;
}
if(sftp->unlink_packet) {
LIBSSH2_FREE(session, sftp->unlink_packet);
sftp->unlink_packet = NULL;
}
if(sftp->rename_packet) {
LIBSSH2_FREE(session, sftp->rename_packet);
sftp->rename_packet = NULL;
}
if(sftp->fstatvfs_packet) {
LIBSSH2_FREE(session, sftp->fstatvfs_packet);
sftp->fstatvfs_packet = NULL;
}
if(sftp->statvfs_packet) {
LIBSSH2_FREE(session, sftp->statvfs_packet);
sftp->statvfs_packet = NULL;
}
if(sftp->mkdir_packet) {
LIBSSH2_FREE(session, sftp->mkdir_packet);
sftp->mkdir_packet = NULL;
}
if(sftp->rmdir_packet) {
LIBSSH2_FREE(session, sftp->rmdir_packet);
sftp->rmdir_packet = NULL;
}
if(sftp->stat_packet) {
LIBSSH2_FREE(session, sftp->stat_packet);
sftp->stat_packet = NULL;
}
if(sftp->symlink_packet) {
LIBSSH2_FREE(session, sftp->symlink_packet);
sftp->symlink_packet = NULL;
}
if(sftp->fsync_packet) {
LIBSSH2_FREE(session, sftp->fsync_packet);
sftp->fsync_packet = NULL;
}
sftp_packet_flush(sftp);
/* TODO: We should consider walking over the sftp_handles list and kill
* any remaining sftp handles ... */
rc = _libssh2_channel_free(sftp->channel);
return rc;
}
/* libssh2_sftp_shutdown
* Shutsdown the SFTP subsystem
*/
LIBSSH2_API int
libssh2_sftp_shutdown(LIBSSH2_SFTP *sftp)
{
int rc;
if(!sftp)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, sftp->channel->session, sftp_shutdown(sftp));
return rc;
}
/* *******************************
* SFTP File and Directory Ops *
******************************* */
/* sftp_open
*/
static LIBSSH2_SFTP_HANDLE *
sftp_open(LIBSSH2_SFTP *sftp, const char *filename,
size_t filename_len, uint32_t flags, long mode,
int open_type)
{
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
LIBSSH2_SFTP_HANDLE *fp;
LIBSSH2_SFTP_ATTRIBUTES attrs = {
LIBSSH2_SFTP_ATTR_PERMISSIONS, 0, 0, 0, 0, 0, 0
};
unsigned char *s;
ssize_t rc;
int open_file = (open_type == LIBSSH2_SFTP_OPENFILE)?1:0;
if(sftp->open_state == libssh2_NB_state_idle) {
/* packet_len(4) + packet_type(1) + request_id(4) + filename_len(4) +
flags(4) */
sftp->open_packet_len = filename_len + 13 +
(open_file? (4 +
sftp_attrsize(LIBSSH2_SFTP_ATTR_PERMISSIONS)) : 0);
/* surprise! this starts out with nothing sent */
sftp->open_packet_sent = 0;
s = sftp->open_packet = LIBSSH2_ALLOC(session, sftp->open_packet_len);
if(!sftp->open_packet) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for FXP_OPEN or "
"FXP_OPENDIR packet");
return NULL;
}
/* Filetype in SFTP 3 and earlier */
attrs.permissions = mode |
(open_file ? LIBSSH2_SFTP_ATTR_PFILETYPE_FILE :
LIBSSH2_SFTP_ATTR_PFILETYPE_DIR);
_libssh2_store_u32(&s, sftp->open_packet_len - 4);
*(s++) = open_file? SSH_FXP_OPEN : SSH_FXP_OPENDIR;
sftp->open_request_id = sftp->request_id++;
_libssh2_store_u32(&s, sftp->open_request_id);
_libssh2_store_str(&s, filename, filename_len);
if(open_file) {
_libssh2_store_u32(&s, flags);
s += sftp_attr2bin(s, &attrs);
}
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "Sending %s open request",
open_file? "file" : "directory");
sftp->open_state = libssh2_NB_state_created;
}
if(sftp->open_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, sftp->open_packet+
sftp->open_packet_sent,
sftp->open_packet_len -
sftp->open_packet_sent);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block sending FXP_OPEN or "
"FXP_OPENDIR command");
return NULL;
}
else if(rc < 0) {
_libssh2_error(session, rc, "Unable to send FXP_OPEN*");
LIBSSH2_FREE(session, sftp->open_packet);
sftp->open_packet = NULL;
sftp->open_state = libssh2_NB_state_idle;
return NULL;
}
/* bump the sent counter and remain in this state until the whole
data is off */
sftp->open_packet_sent += rc;
if(sftp->open_packet_len == sftp->open_packet_sent) {
LIBSSH2_FREE(session, sftp->open_packet);
sftp->open_packet = NULL;
sftp->open_state = libssh2_NB_state_sent;
}
}
if(sftp->open_state == libssh2_NB_state_sent) {
size_t data_len;
unsigned char *data;
static const unsigned char fopen_responses[2] =
{ SSH_FXP_HANDLE, SSH_FXP_STATUS };
rc = sftp_packet_requirev(sftp, 2, fopen_responses,
sftp->open_request_id, &data,
&data_len, 1);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block waiting for status message");
return NULL;
}
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
_libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Response too small");
return NULL;
}
sftp->open_state = libssh2_NB_state_idle;
if(rc) {
_libssh2_error(session, rc, "Timeout waiting for status message");
return NULL;
}
/* OPEN can basically get STATUS or HANDLE back, where HANDLE implies
a fine response while STATUS means error. It seems though that at
times we get an SSH_FX_OK back in a STATUS, followed the "real"
HANDLE so we need to properly deal with that. */
if(data[0] == SSH_FXP_STATUS) {
int badness = 1;
if(data_len < 9) {
_libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Too small FXP_STATUS");
LIBSSH2_FREE(session, data);
return NULL;
}
sftp->last_errno = _libssh2_ntohu32(data + 5);
if(LIBSSH2_FX_OK == sftp->last_errno) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"got HANDLE FXOK!");
LIBSSH2_FREE(session, data);
/* silly situation, but check for a HANDLE */
rc = sftp_packet_require(sftp, SSH_FXP_HANDLE,
sftp->open_request_id, &data,
&data_len, 10);
if(rc == LIBSSH2_ERROR_EAGAIN) {
/* go back to sent state and wait for something else */
sftp->open_state = libssh2_NB_state_sent;
return NULL;
}
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
_libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Too small FXP_HANDLE");
return NULL;
}
else if(!rc)
/* we got the handle so this is not a bad situation */
badness = 0;
}
if(badness) {
_libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Failed opening remote file");
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"got FXP_STATUS %d",
sftp->last_errno);
LIBSSH2_FREE(session, data);
return NULL;
}
}
if(data_len < 10) {
_libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Too small FXP_HANDLE");
LIBSSH2_FREE(session, data);
return NULL;
}
fp = LIBSSH2_CALLOC(session, sizeof(LIBSSH2_SFTP_HANDLE));
if(!fp) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate new SFTP handle structure");
LIBSSH2_FREE(session, data);
return NULL;
}
fp->handle_type = open_file ? LIBSSH2_SFTP_HANDLE_FILE :
LIBSSH2_SFTP_HANDLE_DIR;
fp->handle_len = _libssh2_ntohu32(data + 5);
if(fp->handle_len > SFTP_HANDLE_MAXLEN)
/* SFTP doesn't allow handles longer than 256 characters */
fp->handle_len = SFTP_HANDLE_MAXLEN;
if(fp->handle_len > (data_len - 9))
/* do not reach beyond the end of the data we got */
fp->handle_len = data_len - 9;
memcpy(fp->handle, data + 9, fp->handle_len);
LIBSSH2_FREE(session, data);
/* add this file handle to the list kept in the sftp session */
_libssh2_list_add(&sftp->sftp_handles, &fp->node);
fp->sftp = sftp; /* point to the parent struct */
fp->u.file.offset = 0;
fp->u.file.offset_sent = 0;
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "Open command successful");
return fp;
}
return NULL;
}
/* libssh2_sftp_open_ex
*/
LIBSSH2_API LIBSSH2_SFTP_HANDLE *
libssh2_sftp_open_ex(LIBSSH2_SFTP *sftp, const char *filename,
unsigned int filename_len, unsigned long flags, long mode,
int open_type)
{
LIBSSH2_SFTP_HANDLE *hnd;
if(!sftp)
return NULL;
BLOCK_ADJUST_ERRNO(hnd, sftp->channel->session,
sftp_open(sftp, filename, filename_len, flags, mode,
open_type));
return hnd;
}
/*
* sftp_read
*
* Read from an SFTP file handle
*
*/
static ssize_t sftp_read(LIBSSH2_SFTP_HANDLE * handle, char *buffer,
size_t buffer_size)
{
LIBSSH2_SFTP *sftp = handle->sftp;
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
size_t count = 0;
struct sftp_pipeline_chunk *chunk;
struct sftp_pipeline_chunk *next;
ssize_t rc;
struct _libssh2_sftp_handle_file_data *filep =
&handle->u.file;
size_t bytes_in_buffer = 0;
char *sliding_bufferp = buffer;
/* This function can be interrupted in three different places where it
might need to wait for data from the network. It returns EAGAIN to
allow non-blocking clients to do other work but these client are
expected to call this function again (possibly many times) to finish
the operation.
The tricky part is that if we previously aborted a sftp_read due to
EAGAIN, we must continue at the same spot to continue the previously
interrupted operation. This is done using a state machine to record
what phase of execution we were at. The state is stored in
sftp->read_state.
libssh2_NB_state_idle: The first phase is where we prepare multiple
FXP_READ packets to do optimistic read-ahead. We send off as many as
possible in the second phase without waiting for a response to each
one; this is the key to fast reads. But we may have to adjust the
channel window size to do this which may interrupt this function while
waiting. The state machine saves the phase as libssh2_NB_state_idle so
it returns here on the next call.
libssh2_NB_state_sent: The second phase is where we send the FXP_READ
packets. Writing them to the channel can be interrupted with EAGAIN
but the state machine ensures we skip the first phase on the next call
and resume sending.
libssh2_NB_state_sent2: In the third phase (indicated by ) we read the
data from the responses that have arrived so far. Reading can be
interrupted with EAGAIN but the state machine ensures we skip the first
and second phases on the next call and resume sending.
*/
switch(sftp->read_state) {
case libssh2_NB_state_idle:
/* Some data may already have been read from the server in the
previous call but didn't fit in the buffer at the time. If so, we
return that now as we can't risk being interrupted later with data
partially written to the buffer. */
if(filep->data_left) {
size_t copy = MIN(buffer_size, filep->data_left);
memcpy(buffer, &filep->data[ filep->data_len - filep->data_left],
copy);
filep->data_left -= copy;
filep->offset += copy;
if(!filep->data_left) {
LIBSSH2_FREE(session, filep->data);
filep->data = NULL;
}
return copy;
}
if(filep->eof) {
return 0;
}
else {
/* We allow a number of bytes being requested at any given time
without having been acked - until we reach EOF. */
/* Number of bytes asked for that haven't been acked yet */
size_t already = (size_t)(filep->offset_sent - filep->offset);
size_t max_read_ahead = buffer_size*4;
unsigned long recv_window;
if(max_read_ahead > LIBSSH2_CHANNEL_WINDOW_DEFAULT*4)
max_read_ahead = LIBSSH2_CHANNEL_WINDOW_DEFAULT*4;
/* if the buffer_size passed in now is smaller than what has
already been sent, we risk getting count become a very large
number */
if(max_read_ahead > already)
count = max_read_ahead - already;
/* 'count' is how much more data to ask for, and 'already' is how
much data that already has been asked for but not yet returned.
Specifically, 'count' means how much data that have or will be
asked for by the nodes that are already added to the linked
list. Some of those read requests may not actually have been
sent off successfully yet.
If 'already' is very large it should be perfectly fine to have
count set to 0 as then we don't have to ask for more data
(right now).
buffer_size*4 is just picked more or less out of the air. The
idea is that when reading SFTP from a remote server, we send
away multiple read requests guessing that the client will read
more than only this 'buffer_size' amount of memory. So we ask
for maximum buffer_size*4 amount of data so that we can return
them very fast in subsequent calls.
*/
recv_window = libssh2_channel_window_read_ex(sftp->channel,
NULL, NULL);
if(max_read_ahead > recv_window) {
/* more data will be asked for than what the window currently
allows, expand it! */
rc = _libssh2_channel_receive_window_adjust(sftp->channel,
max_read_ahead*8,
1, NULL);
/* if this returns EAGAIN, we will get back to this function
at next call */
assert(rc != LIBSSH2_ERROR_EAGAIN || !filep->data_left);
assert(rc != LIBSSH2_ERROR_EAGAIN || !filep->eof);
if(rc)
return rc;
}
}
while(count > 0) {
unsigned char *s;
/* 25 = packet_len(4) + packet_type(1) + request_id(4) +
handle_len(4) + offset(8) + count(4) */
uint32_t packet_len = (uint32_t)handle->handle_len + 25;
uint32_t request_id;
uint32_t size = count;
if(size < buffer_size)
size = buffer_size;
if(size > MAX_SFTP_READ_SIZE)
size = MAX_SFTP_READ_SIZE;
chunk = LIBSSH2_ALLOC(session, packet_len +
sizeof(struct sftp_pipeline_chunk));
if(!chunk)
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"malloc fail for FXP_WRITE");
chunk->offset = filep->offset_sent;
chunk->len = size;
chunk->lefttosend = packet_len;
chunk->sent = 0;
s = chunk->packet;
_libssh2_store_u32(&s, packet_len - 4);
*s++ = SSH_FXP_READ;
request_id = sftp->request_id++;
chunk->request_id = request_id;
_libssh2_store_u32(&s, request_id);
_libssh2_store_str(&s, handle->handle, handle->handle_len);
_libssh2_store_u64(&s, filep->offset_sent);
filep->offset_sent += size; /* advance offset at once */
_libssh2_store_u32(&s, size);
/* add this new entry LAST in the list */
_libssh2_list_add(&handle->packet_list, &chunk->node);
count -= MIN(size, count); /* deduct the size we used, as we might
* have to create more packets */
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"read request id %d sent (offset: %d, size: %d)",
request_id, (int)chunk->offset, (int)chunk->len);
}
/* FALL-THROUGH */
case libssh2_NB_state_sent:
sftp->read_state = libssh2_NB_state_idle;
/* move through the READ packets that haven't been sent and send as
many as possible - remember that we don't block */
chunk = _libssh2_list_first(&handle->packet_list);
while(chunk) {
if(chunk->lefttosend) {
rc = _libssh2_channel_write(channel, 0,
&chunk->packet[chunk->sent],
chunk->lefttosend);
if(rc < 0) {
sftp->read_state = libssh2_NB_state_sent;
return rc;
}
/* remember where to continue sending the next time */
chunk->lefttosend -= rc;
chunk->sent += rc;
if(chunk->lefttosend) {
/* We still have data left to send for this chunk.
* If there is at least one completely sent chunk,
* we can get out of this loop and start reading. */
if(chunk != _libssh2_list_first(&handle->packet_list)) {
break;
}
else {
continue;
}
}
}
/* move on to the next chunk with data to send */
chunk = _libssh2_list_next(&chunk->node);
}
/* FALL-THROUGH */
case libssh2_NB_state_sent2:
sftp->read_state = libssh2_NB_state_idle;
/*
* Count all ACKed packets and act on the contents of them.
*/
chunk = _libssh2_list_first(&handle->packet_list);
while(chunk) {
unsigned char *data;
size_t data_len = 0;
uint32_t rc32;
static const unsigned char read_responses[2] = {
SSH_FXP_DATA, SSH_FXP_STATUS
};
if(chunk->lefttosend) {
/* if the chunk still has data left to send, we shouldn't wait
for an ACK for it just yet */
if(bytes_in_buffer > 0) {
return bytes_in_buffer;
}
else {
/* we should never reach this point */
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"sftp_read() internal error");
}
}
rc = sftp_packet_requirev(sftp, 2, read_responses,
chunk->request_id, &data, &data_len, 9);
if(rc == LIBSSH2_ERROR_EAGAIN && bytes_in_buffer != 0) {
/* do not return EAGAIN if we have already
* written data into the buffer */
return bytes_in_buffer;
}
if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Response too small");
}
else if(rc < 0) {
sftp->read_state = libssh2_NB_state_sent2;
return rc;
}
/*
* We get DATA or STATUS back. STATUS can be error, or it is
* FX_EOF when we reach the end of the file.
*/
switch(data[0]) {
case SSH_FXP_STATUS:
/* remove the chunk we just processed */
_libssh2_list_remove(&chunk->node);
LIBSSH2_FREE(session, chunk);
/* we must remove all outstanding READ requests, as either we
got an error or we're at end of file */
sftp_packetlist_flush(handle);
rc32 = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
if(rc32 == LIBSSH2_FX_EOF) {
filep->eof = TRUE;
return bytes_in_buffer;
}
else {
sftp->last_errno = rc32;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP READ error");
}
break;
case SSH_FXP_DATA:
if(chunk->offset != filep->offset) {
/* This could happen if the server returns less bytes than
requested, which shouldn't happen for normal files. See:
https://tools.ietf.org/html/draft-ietf-secsh-filexfer-02
#section-6.4
*/
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Read Packet At Unexpected Offset");
}
rc32 = _libssh2_ntohu32(data + 5);
if(rc32 > (data_len - 9))
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol badness");
if(rc32 > chunk->len) {
/* A chunk larger than we requested was returned to us.
This is a protocol violation and we don't know how to
deal with it. Bail out! */
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"FXP_READ response too big");
}
if(rc32 != chunk->len) {
/* a short read does not imply end of file, but we must
adjust the offset_sent since it was advanced with a
full chunk->len before */
filep->offset_sent -= (chunk->len - rc32);
}
if((bytes_in_buffer + rc32) > buffer_size) {
/* figure out the overlap amount */
filep->data_left = (bytes_in_buffer + rc32) - buffer_size;
/* getting the full packet would overflow the buffer, so
only get the correct amount and keep the remainder */
rc32 = (uint32_t)buffer_size - bytes_in_buffer;
/* store data to keep for next call */
filep->data = data;
filep->data_len = data_len;
}
else
filep->data_len = 0;
/* copy the received data from the received FXP_DATA packet to
the buffer at the correct index */
memcpy(sliding_bufferp, data + 9, rc32);
filep->offset += rc32;
bytes_in_buffer += rc32;
sliding_bufferp += rc32;
if(filep->data_len == 0)
/* free the allocated data if not stored to keep */
LIBSSH2_FREE(session, data);
/* remove the chunk we just processed keeping track of the
* next one in case we need it */
next = _libssh2_list_next(&chunk->node);
_libssh2_list_remove(&chunk->node);
LIBSSH2_FREE(session, chunk);
/* check if we have space left in the buffer
* and either continue to the next chunk or stop
*/
if(bytes_in_buffer < buffer_size) {
chunk = next;
}
else {
chunk = NULL;
}
break;
default:
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol badness: unrecognised "
"read request response");
}
}
if(bytes_in_buffer > 0)
return bytes_in_buffer;
break;
default:
assert(!"State machine error; unrecognised read state");
}
/* we should never reach this point */
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"sftp_read() internal error");
}
/* libssh2_sftp_read
* Read from an SFTP file handle
*/
LIBSSH2_API ssize_t
libssh2_sftp_read(LIBSSH2_SFTP_HANDLE *hnd, char *buffer,
size_t buffer_maxlen)
{
ssize_t rc;
if(!hnd)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, hnd->sftp->channel->session,
sftp_read(hnd, buffer, buffer_maxlen));
return rc;
}
/* sftp_readdir
* Read from an SFTP directory handle
*/
static ssize_t sftp_readdir(LIBSSH2_SFTP_HANDLE *handle, char *buffer,
size_t buffer_maxlen, char *longentry,
size_t longentry_maxlen,
LIBSSH2_SFTP_ATTRIBUTES *attrs)
{
LIBSSH2_SFTP *sftp = handle->sftp;
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
size_t data_len = 0;
uint32_t num_names;
/* 13 = packet_len(4) + packet_type(1) + request_id(4) + handle_len(4) */
uint32_t packet_len = handle->handle_len + 13;
unsigned char *s, *data;
static const unsigned char read_responses[2] = {
SSH_FXP_NAME, SSH_FXP_STATUS };
ssize_t retcode;
if(sftp->readdir_state == libssh2_NB_state_idle) {
if(handle->u.dir.names_left) {
/*
* A prior request returned more than one directory entry,
* feed it back from the buffer
*/
LIBSSH2_SFTP_ATTRIBUTES attrs_dummy;
size_t real_longentry_len;
size_t real_filename_len;
size_t filename_len;
size_t longentry_len;
size_t names_packet_len = handle->u.dir.names_packet_len;
int attr_len = 0;
if(names_packet_len >= 4) {
s = (unsigned char *) handle->u.dir.next_name;
real_filename_len = _libssh2_ntohu32(s);
s += 4;
names_packet_len -= 4;
}
else {
filename_len = (size_t)LIBSSH2_ERROR_BUFFER_TOO_SMALL;
goto end;
}
filename_len = real_filename_len;
if(filename_len >= buffer_maxlen) {
filename_len = (size_t)LIBSSH2_ERROR_BUFFER_TOO_SMALL;
goto end;
}
if(buffer_maxlen >= filename_len && names_packet_len >=
filename_len) {
memcpy(buffer, s, filename_len);
buffer[filename_len] = '\0'; /* zero terminate */
s += real_filename_len;
names_packet_len -= real_filename_len;
}
else {
filename_len = (size_t)LIBSSH2_ERROR_BUFFER_TOO_SMALL;
goto end;
}
if(names_packet_len >= 4) {
real_longentry_len = _libssh2_ntohu32(s);
s += 4;
names_packet_len -= 4;
}
else {
filename_len = (size_t)LIBSSH2_ERROR_BUFFER_TOO_SMALL;
goto end;
}
if(longentry && (longentry_maxlen>1)) {
longentry_len = real_longentry_len;
if(longentry_len >= longentry_maxlen ||
longentry_len > names_packet_len) {
filename_len = (size_t)LIBSSH2_ERROR_BUFFER_TOO_SMALL;
goto end;
}
memcpy(longentry, s, longentry_len);
longentry[longentry_len] = '\0'; /* zero terminate */
}
if(real_longentry_len <= names_packet_len) {
s += real_longentry_len;
names_packet_len -= real_longentry_len;
}
else {
filename_len = (size_t)LIBSSH2_ERROR_BUFFER_TOO_SMALL;
goto end;
}
if(attrs)
memset(attrs, 0, sizeof(LIBSSH2_SFTP_ATTRIBUTES));
attr_len = sftp_bin2attr(attrs ? attrs : &attrs_dummy, s,
names_packet_len);
if(attr_len >= 0) {
s += attr_len;
names_packet_len -= attr_len;
}
else {
filename_len = (size_t)LIBSSH2_ERROR_BUFFER_TOO_SMALL;
goto end;
}
handle->u.dir.next_name = (char *) s;
handle->u.dir.names_packet_len = names_packet_len;
end:
if((--handle->u.dir.names_left) == 0)
LIBSSH2_FREE(session, handle->u.dir.names_packet);
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"libssh2_sftp_readdir_ex() return %d",
filename_len);
return (ssize_t)filename_len;
}
/* Request another entry(entries?) */
s = sftp->readdir_packet = LIBSSH2_ALLOC(session, packet_len);
if(!sftp->readdir_packet)
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"FXP_READDIR packet");
_libssh2_store_u32(&s, packet_len - 4);
*(s++) = SSH_FXP_READDIR;
sftp->readdir_request_id = sftp->request_id++;
_libssh2_store_u32(&s, sftp->readdir_request_id);
_libssh2_store_str(&s, handle->handle, handle->handle_len);
sftp->readdir_state = libssh2_NB_state_created;
}
if(sftp->readdir_state == libssh2_NB_state_created) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Reading entries from directory handle");
retcode = _libssh2_channel_write(channel, 0, sftp->readdir_packet,
packet_len);
if(retcode == LIBSSH2_ERROR_EAGAIN) {
return retcode;
}
else if((ssize_t)packet_len != retcode) {
LIBSSH2_FREE(session, sftp->readdir_packet);
sftp->readdir_packet = NULL;
sftp->readdir_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"_libssh2_channel_write() failed");
}
LIBSSH2_FREE(session, sftp->readdir_packet);
sftp->readdir_packet = NULL;
sftp->readdir_state = libssh2_NB_state_sent;
}
retcode = sftp_packet_requirev(sftp, 2, read_responses,
sftp->readdir_request_id, &data,
&data_len, 9);
if(retcode == LIBSSH2_ERROR_EAGAIN)
return retcode;
else if(retcode == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Status message too short");
}
else if(retcode) {
sftp->readdir_state = libssh2_NB_state_idle;
return _libssh2_error(session, retcode,
"Timeout waiting for status message");
}
if(data[0] == SSH_FXP_STATUS) {
retcode = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
if(retcode == LIBSSH2_FX_EOF) {
sftp->readdir_state = libssh2_NB_state_idle;
return 0;
}
else {
sftp->last_errno = retcode;
sftp->readdir_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error");
}
}
sftp->readdir_state = libssh2_NB_state_idle;
num_names = _libssh2_ntohu32(data + 5);
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "%lu entries returned",
num_names);
if(!num_names) {
LIBSSH2_FREE(session, data);
return 0;
}
handle->u.dir.names_left = num_names;
handle->u.dir.names_packet = data;
handle->u.dir.next_name = (char *) data + 9;
handle->u.dir.names_packet_len = data_len - 9;
/* use the name popping mechanism from the start of the function */
return sftp_readdir(handle, buffer, buffer_maxlen, longentry,
longentry_maxlen, attrs);
}
/* libssh2_sftp_readdir_ex
* Read from an SFTP directory handle
*/
LIBSSH2_API int
libssh2_sftp_readdir_ex(LIBSSH2_SFTP_HANDLE *hnd, char *buffer,
size_t buffer_maxlen, char *longentry,
size_t longentry_maxlen,
LIBSSH2_SFTP_ATTRIBUTES *attrs)
{
int rc;
if(!hnd)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, hnd->sftp->channel->session,
sftp_readdir(hnd, buffer, buffer_maxlen, longentry,
longentry_maxlen, attrs));
return rc;
}
/*
* sftp_write
*
* Write data to an SFTP handle. Returns the number of bytes written, or
* a negative error code.
*
* We recommend sending very large data buffers to this function!
*
* Concept:
*
* - Detect how much of the given buffer that was already sent in a previous
* call by inspecting the linked list of outgoing chunks. Make sure to skip
* passed the data that has already been taken care of.
*
* - Split all (new) outgoing data in chunks no larger than N.
*
* - Each N bytes chunk gets created as a separate SFTP packet.
*
* - Add all created outgoing packets to the linked list.
*
* - Walk through the list and send the chunks that haven't been sent,
* as many as possible until EAGAIN. Some of the chunks may have been put
* in the list in a previous invoke.
*
* - For all the chunks in the list that have been completely sent off, check
* for ACKs. If a chunk has been ACKed, it is removed from the linked
* list and the "acked" counter gets increased with that data amount.
*
* - Return TOTAL bytes acked so far.
*
* Caveats:
* - be careful: we must not return a higher number than what was given!
*
* TODO:
* Introduce an option that disables this sort of "speculative" ahead writing
* as there's a risk that it will do harm to some app.
*/
static ssize_t sftp_write(LIBSSH2_SFTP_HANDLE *handle, const char *buffer,
size_t count)
{
LIBSSH2_SFTP *sftp = handle->sftp;
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
size_t data_len = 0;
uint32_t retcode;
uint32_t packet_len;
unsigned char *s, *data = NULL;
ssize_t rc;
struct sftp_pipeline_chunk *chunk;
struct sftp_pipeline_chunk *next;
size_t acked = 0;
size_t org_count = count;
size_t already;
switch(sftp->write_state) {
default:
case libssh2_NB_state_idle:
/* Number of bytes sent off that haven't been acked and therefore we
will get passed in here again.
Also, add up the number of bytes that actually already have been
acked but we haven't been able to return as such yet, so we will
get that data as well passed in here again.
*/
already = (size_t) (handle->u.file.offset_sent -
handle->u.file.offset)+
handle->u.file.acked;
if(count >= already) {
/* skip the part already made into packets */
buffer += already;
count -= already;
}
else
/* there is more data already fine than what we got in this call */
count = 0;
sftp->write_state = libssh2_NB_state_idle;
while(count) {
/* TODO: Possibly this should have some logic to prevent a very
very small fraction to be left but lets ignore that for now */
uint32_t size = MIN(MAX_SFTP_OUTGOING_SIZE, count);
uint32_t request_id;
/* 25 = packet_len(4) + packet_type(1) + request_id(4) +
handle_len(4) + offset(8) + count(4) */
packet_len = handle->handle_len + size + 25;
chunk = LIBSSH2_ALLOC(session, packet_len +
sizeof(struct sftp_pipeline_chunk));
if(!chunk)
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"malloc fail for FXP_WRITE");
chunk->len = size;
chunk->sent = 0;
chunk->lefttosend = packet_len;
s = chunk->packet;
_libssh2_store_u32(&s, packet_len - 4);
*(s++) = SSH_FXP_WRITE;
request_id = sftp->request_id++;
chunk->request_id = request_id;
_libssh2_store_u32(&s, request_id);
_libssh2_store_str(&s, handle->handle, handle->handle_len);
_libssh2_store_u64(&s, handle->u.file.offset_sent);
handle->u.file.offset_sent += size; /* advance offset at once */
_libssh2_store_str(&s, buffer, size);
/* add this new entry LAST in the list */
_libssh2_list_add(&handle->packet_list, &chunk->node);
buffer += size;
count -= size; /* deduct the size we used, as we might have
to create more packets */
}
/* move through the WRITE packets that haven't been sent and send as
many as possible - remember that we don't block */
chunk = _libssh2_list_first(&handle->packet_list);
while(chunk) {
if(chunk->lefttosend) {
rc = _libssh2_channel_write(channel, 0,
&chunk->packet[chunk->sent],
chunk->lefttosend);
if(rc < 0)
/* remain in idle state */
return rc;
/* remember where to continue sending the next time */
chunk->lefttosend -= rc;
chunk->sent += rc;
if(chunk->lefttosend)
/* data left to send, get out of loop */
break;
}
/* move on to the next chunk with data to send */
chunk = _libssh2_list_next(&chunk->node);
}
/* fall-through */
case libssh2_NB_state_sent:
sftp->write_state = libssh2_NB_state_idle;
/*
* Count all ACKed packets
*/
chunk = _libssh2_list_first(&handle->packet_list);
while(chunk) {
if(chunk->lefttosend)
/* if the chunk still has data left to send, we shouldn't wait
for an ACK for it just yet */
break;
else if(acked)
/* if we have sent data that is acked, we must return that
info before we call a function that might return EAGAIN */
break;
/* we check the packets in order */
rc = sftp_packet_require(sftp, SSH_FXP_STATUS,
chunk->request_id, &data, &data_len, 9);
if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"FXP write packet too short");
}
else if(rc < 0) {
if(rc == LIBSSH2_ERROR_EAGAIN)
sftp->write_state = libssh2_NB_state_sent;
return rc;
}
retcode = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
sftp->last_errno = retcode;
if(retcode == LIBSSH2_FX_OK) {
acked += chunk->len; /* number of payload data that was acked
here */
/* we increase the offset value for all acks */
handle->u.file.offset += chunk->len;
next = _libssh2_list_next(&chunk->node);
_libssh2_list_remove(&chunk->node); /* remove from list */
LIBSSH2_FREE(session, chunk); /* free memory */
chunk = next;
}
else {
/* flush all pending packets from the outgoing list */
sftp_packetlist_flush(handle);
/* since we return error now, the application will not get any
outstanding data acked, so we need to rewind the offset to
where the application knows it has reached with acked
data */
handle->u.file.offset -= handle->u.file.acked;
/* then reset the offset_sent to be the same as the offset */
handle->u.file.offset_sent = handle->u.file.offset;
/* clear the acked counter since we can have no pending data to
ack after an error */
handle->u.file.acked = 0;
/* the server returned an error for that written chunk,
propagate this back to our parent function */
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"FXP write failed");
}
}
break;
}
/* if there were acked data in a previous call that wasn't returned then,
add that up and try to return it all now. This can happen if the app
first sends a huge buffer of data, and then in a second call it sends a
smaller one. */
acked += handle->u.file.acked;
if(acked) {
ssize_t ret = MIN(acked, org_count);
/* we got data acked so return that amount, but no more than what
was asked to get sent! */
/* store the remainder. 'ret' is always equal to or less than 'acked'
here */
handle->u.file.acked = acked - ret;
return ret;
}
else
return 0; /* nothing was acked, and no EAGAIN was received! */
}
/* libssh2_sftp_write
* Write data to a file handle
*/
LIBSSH2_API ssize_t
libssh2_sftp_write(LIBSSH2_SFTP_HANDLE *hnd, const char *buffer,
size_t count)
{
ssize_t rc;
if(!hnd)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, hnd->sftp->channel->session,
sftp_write(hnd, buffer, count));
return rc;
}
static int sftp_fsync(LIBSSH2_SFTP_HANDLE *handle)
{
LIBSSH2_SFTP *sftp = handle->sftp;
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
/* 34 = packet_len(4) + packet_type(1) + request_id(4) +
string_len(4) + strlen("[email protected]")(17) + handle_len(4) */
uint32_t packet_len = handle->handle_len + 34;
size_t data_len = 0;
unsigned char *packet, *s, *data = NULL;
ssize_t rc;
uint32_t retcode;
if(sftp->fsync_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Issuing fsync command");
s = packet = LIBSSH2_ALLOC(session, packet_len);
if(!packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for FXP_EXTENDED "
"packet");
}
_libssh2_store_u32(&s, packet_len - 4);
*(s++) = SSH_FXP_EXTENDED;
sftp->fsync_request_id = sftp->request_id++;
_libssh2_store_u32(&s, sftp->fsync_request_id);
_libssh2_store_str(&s, "[email protected]", 17);
_libssh2_store_str(&s, handle->handle, handle->handle_len);
sftp->fsync_state = libssh2_NB_state_created;
}
else {
packet = sftp->fsync_packet;
}
if(sftp->fsync_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, packet, packet_len);
if(rc == LIBSSH2_ERROR_EAGAIN ||
(0 <= rc && rc < (ssize_t)packet_len)) {
sftp->fsync_packet = packet;
return LIBSSH2_ERROR_EAGAIN;
}
LIBSSH2_FREE(session, packet);
sftp->fsync_packet = NULL;
if(rc < 0) {
sftp->fsync_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"_libssh2_channel_write() failed");
}
sftp->fsync_state = libssh2_NB_state_sent;
}
rc = sftp_packet_require(sftp, SSH_FXP_STATUS,
sftp->fsync_request_id, &data, &data_len, 9);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP fsync packet too short");
}
else if(rc) {
sftp->fsync_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Error waiting for FXP EXTENDED REPLY");
}
sftp->fsync_state = libssh2_NB_state_idle;
retcode = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
if(retcode != LIBSSH2_FX_OK) {
sftp->last_errno = retcode;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"fsync failed");
}
return 0;
}
/* libssh2_sftp_fsync
* Commit data on the handle to disk.
*/
LIBSSH2_API int
libssh2_sftp_fsync(LIBSSH2_SFTP_HANDLE *hnd)
{
int rc;
if(!hnd)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, hnd->sftp->channel->session,
sftp_fsync(hnd));
return rc;
}
/*
* sftp_fstat
*
* Get or Set stat on a file
*/
static int sftp_fstat(LIBSSH2_SFTP_HANDLE *handle,
LIBSSH2_SFTP_ATTRIBUTES *attrs, int setstat)
{
LIBSSH2_SFTP *sftp = handle->sftp;
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
size_t data_len = 0;
/* 13 = packet_len(4) + packet_type(1) + request_id(4) + handle_len(4) */
uint32_t packet_len =
handle->handle_len + 13 + (setstat ? sftp_attrsize(attrs->flags) : 0);
unsigned char *s, *data = NULL;
static const unsigned char fstat_responses[2] =
{ SSH_FXP_ATTRS, SSH_FXP_STATUS };
ssize_t rc;
if(sftp->fstat_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "Issuing %s command",
setstat ? "set-stat" : "stat");
s = sftp->fstat_packet = LIBSSH2_ALLOC(session, packet_len);
if(!sftp->fstat_packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"FSTAT/FSETSTAT packet");
}
_libssh2_store_u32(&s, packet_len - 4);
*(s++) = setstat ? SSH_FXP_FSETSTAT : SSH_FXP_FSTAT;
sftp->fstat_request_id = sftp->request_id++;
_libssh2_store_u32(&s, sftp->fstat_request_id);
_libssh2_store_str(&s, handle->handle, handle->handle_len);
if(setstat) {
s += sftp_attr2bin(s, attrs);
}
sftp->fstat_state = libssh2_NB_state_created;
}
if(sftp->fstat_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, sftp->fstat_packet,
packet_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if((ssize_t)packet_len != rc) {
LIBSSH2_FREE(session, sftp->fstat_packet);
sftp->fstat_packet = NULL;
sftp->fstat_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
(setstat ? "Unable to send FXP_FSETSTAT"
: "Unable to send FXP_FSTAT command"));
}
LIBSSH2_FREE(session, sftp->fstat_packet);
sftp->fstat_packet = NULL;
sftp->fstat_state = libssh2_NB_state_sent;
}
rc = sftp_packet_requirev(sftp, 2, fstat_responses,
sftp->fstat_request_id, &data,
&data_len, 9);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP fstat packet too short");
}
else if(rc) {
sftp->fstat_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Timeout waiting for status message");
}
sftp->fstat_state = libssh2_NB_state_idle;
if(data[0] == SSH_FXP_STATUS) {
uint32_t retcode;
retcode = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
if(retcode == LIBSSH2_FX_OK) {
return 0;
}
else {
sftp->last_errno = retcode;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error");
}
}
if(sftp_bin2attr(attrs, data + 5, data_len - 5) < 0) {
LIBSSH2_FREE(session, data);
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Attributes too short in SFTP fstat");
}
LIBSSH2_FREE(session, data);
return 0;
}
/* libssh2_sftp_fstat_ex
* Get or Set stat on a file
*/
LIBSSH2_API int
libssh2_sftp_fstat_ex(LIBSSH2_SFTP_HANDLE *hnd,
LIBSSH2_SFTP_ATTRIBUTES *attrs, int setstat)
{
int rc;
if(!hnd || !attrs)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, hnd->sftp->channel->session,
sftp_fstat(hnd, attrs, setstat));
return rc;
}
/* libssh2_sftp_seek64
* Set the read/write pointer to an arbitrary position within the file
*/
LIBSSH2_API void
libssh2_sftp_seek64(LIBSSH2_SFTP_HANDLE *handle, libssh2_uint64_t offset)
{
if(!handle)
return;
if(handle->u.file.offset == offset && handle->u.file.offset_sent == offset)
return;
handle->u.file.offset = handle->u.file.offset_sent = offset;
/* discard all pending requests and currently read data */
sftp_packetlist_flush(handle);
/* free the left received buffered data */
if(handle->u.file.data_left) {
LIBSSH2_FREE(handle->sftp->channel->session, handle->u.file.data);
handle->u.file.data_left = handle->u.file.data_len = 0;
handle->u.file.data = NULL;
}
/* reset EOF to False */
handle->u.file.eof = FALSE;
}
/* libssh2_sftp_seek
* Set the read/write pointer to an arbitrary position within the file
*/
LIBSSH2_API void
libssh2_sftp_seek(LIBSSH2_SFTP_HANDLE *handle, size_t offset)
{
libssh2_sftp_seek64(handle, (libssh2_uint64_t)offset);
}
/* libssh2_sftp_tell
* Return the current read/write pointer's offset
*/
LIBSSH2_API size_t
libssh2_sftp_tell(LIBSSH2_SFTP_HANDLE *handle)
{
if(!handle)
return 0; /* no handle, no size */
/* NOTE: this may very well truncate the size if it is larger than what
size_t can hold, so libssh2_sftp_tell64() is really the function you
should use */
return (size_t)(handle->u.file.offset);
}
/* libssh2_sftp_tell64
* Return the current read/write pointer's offset
*/
LIBSSH2_API libssh2_uint64_t
libssh2_sftp_tell64(LIBSSH2_SFTP_HANDLE *handle)
{
if(!handle)
return 0; /* no handle, no size */
return handle->u.file.offset;
}
/*
* Flush all remaining incoming SFTP packets and zombies.
*/
static void sftp_packet_flush(LIBSSH2_SFTP *sftp)
{
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
LIBSSH2_SFTP_PACKET *packet = _libssh2_list_first(&sftp->packets);
struct sftp_zombie_requests *zombie =
_libssh2_list_first(&sftp->zombie_requests);
while(packet) {
LIBSSH2_SFTP_PACKET *next;
/* check next struct in the list */
next = _libssh2_list_next(&packet->node);
_libssh2_list_remove(&packet->node);
LIBSSH2_FREE(session, packet->data);
LIBSSH2_FREE(session, packet);
packet = next;
}
while(zombie) {
/* figure out the next node */
struct sftp_zombie_requests *next = _libssh2_list_next(&zombie->node);
/* unlink the current one */
_libssh2_list_remove(&zombie->node);
/* free the memory */
LIBSSH2_FREE(session, zombie);
zombie = next;
}
}
/* sftp_close_handle
*
* Close a file or directory handle.
* Also frees handle resource and unlinks it from the SFTP structure.
* The handle is no longer usable after return of this function, unless
* the return value is LIBSSH2_ERROR_EAGAIN in which case this function
* should be called again.
*/
static int
sftp_close_handle(LIBSSH2_SFTP_HANDLE *handle)
{
LIBSSH2_SFTP *sftp = handle->sftp;
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
size_t data_len = 0;
/* 13 = packet_len(4) + packet_type(1) + request_id(4) + handle_len(4) */
uint32_t packet_len = handle->handle_len + 13;
unsigned char *s, *data = NULL;
int rc = 0;
if(handle->close_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "Closing handle");
s = handle->close_packet = LIBSSH2_ALLOC(session, packet_len);
if(!handle->close_packet) {
handle->close_state = libssh2_NB_state_idle;
rc = _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for FXP_CLOSE "
"packet");
}
else {
_libssh2_store_u32(&s, packet_len - 4);
*(s++) = SSH_FXP_CLOSE;
handle->close_request_id = sftp->request_id++;
_libssh2_store_u32(&s, handle->close_request_id);
_libssh2_store_str(&s, handle->handle, handle->handle_len);
handle->close_state = libssh2_NB_state_created;
}
}
if(handle->close_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, handle->close_packet,
packet_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if((ssize_t)packet_len != rc) {
handle->close_state = libssh2_NB_state_idle;
rc = _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send FXP_CLOSE command");
}
else
handle->close_state = libssh2_NB_state_sent;
LIBSSH2_FREE(session, handle->close_packet);
handle->close_packet = NULL;
}
if(handle->close_state == libssh2_NB_state_sent) {
rc = sftp_packet_require(sftp, SSH_FXP_STATUS,
handle->close_request_id, &data,
&data_len, 9);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
data = NULL;
_libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Packet too short in FXP_CLOSE command");
}
else if(rc) {
_libssh2_error(session, rc,
"Error waiting for status message");
}
handle->close_state = libssh2_NB_state_sent1;
}
if(!data) {
/* if it reaches this point with data unset, something unwanted
happened for which we should have set an error code */
assert(rc);
}
else {
int retcode = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
if(retcode != LIBSSH2_FX_OK) {
sftp->last_errno = retcode;
handle->close_state = libssh2_NB_state_idle;
rc = _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error");
}
}
/* remove this handle from the parent's list */
_libssh2_list_remove(&handle->node);
if(handle->handle_type == LIBSSH2_SFTP_HANDLE_DIR) {
if(handle->u.dir.names_left)
LIBSSH2_FREE(session, handle->u.dir.names_packet);
}
else if(handle->handle_type == LIBSSH2_SFTP_HANDLE_FILE) {
if(handle->u.file.data)
LIBSSH2_FREE(session, handle->u.file.data);
}
sftp_packetlist_flush(handle);
sftp->read_state = libssh2_NB_state_idle;
handle->close_state = libssh2_NB_state_idle;
LIBSSH2_FREE(session, handle);
return rc;
}
/* libssh2_sftp_close_handle
*
* Close a file or directory handle
* Also frees handle resource and unlinks it from the SFTP structure
*/
LIBSSH2_API int
libssh2_sftp_close_handle(LIBSSH2_SFTP_HANDLE *hnd)
{
int rc;
if(!hnd)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, hnd->sftp->channel->session, sftp_close_handle(hnd));
return rc;
}
/* sftp_unlink
* Delete a file from the remote server
*/
static int sftp_unlink(LIBSSH2_SFTP *sftp, const char *filename,
size_t filename_len)
{
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
size_t data_len = 0;
int retcode;
/* 13 = packet_len(4) + packet_type(1) + request_id(4) + filename_len(4) */
uint32_t packet_len = filename_len + 13;
unsigned char *s, *data = NULL;
int rc;
if(sftp->unlink_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "Unlinking %s", filename);
s = sftp->unlink_packet = LIBSSH2_ALLOC(session, packet_len);
if(!sftp->unlink_packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for FXP_REMOVE "
"packet");
}
_libssh2_store_u32(&s, packet_len - 4);
*(s++) = SSH_FXP_REMOVE;
sftp->unlink_request_id = sftp->request_id++;
_libssh2_store_u32(&s, sftp->unlink_request_id);
_libssh2_store_str(&s, filename, filename_len);
sftp->unlink_state = libssh2_NB_state_created;
}
if(sftp->unlink_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, sftp->unlink_packet,
packet_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if((ssize_t)packet_len != rc) {
LIBSSH2_FREE(session, sftp->unlink_packet);
sftp->unlink_packet = NULL;
sftp->unlink_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send FXP_REMOVE command");
}
LIBSSH2_FREE(session, sftp->unlink_packet);
sftp->unlink_packet = NULL;
sftp->unlink_state = libssh2_NB_state_sent;
}
rc = sftp_packet_require(sftp, SSH_FXP_STATUS,
sftp->unlink_request_id, &data,
&data_len, 9);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP unlink packet too short");
}
else if(rc) {
sftp->unlink_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Error waiting for FXP STATUS");
}
sftp->unlink_state = libssh2_NB_state_idle;
retcode = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
if(retcode == LIBSSH2_FX_OK) {
return 0;
}
else {
sftp->last_errno = retcode;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error");
}
}
/* libssh2_sftp_unlink_ex
* Delete a file from the remote server
*/
LIBSSH2_API int
libssh2_sftp_unlink_ex(LIBSSH2_SFTP *sftp, const char *filename,
unsigned int filename_len)
{
int rc;
if(!sftp)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, sftp->channel->session,
sftp_unlink(sftp, filename, filename_len));
return rc;
}
/*
* sftp_rename
*
* Rename a file on the remote server
*/
static int sftp_rename(LIBSSH2_SFTP *sftp, const char *source_filename,
unsigned int source_filename_len,
const char *dest_filename,
unsigned int dest_filename_len, long flags)
{
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
size_t data_len = 0;
int retcode;
uint32_t packet_len =
source_filename_len + dest_filename_len + 17 + (sftp->version >=
5 ? 4 : 0);
/* packet_len(4) + packet_type(1) + request_id(4) +
source_filename_len(4) + dest_filename_len(4) + flags(4){SFTP5+) */
unsigned char *data = NULL;
ssize_t rc;
if(sftp->version < 2) {
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Server does not support RENAME");
}
if(sftp->rename_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "Renaming %s to %s",
source_filename, dest_filename);
sftp->rename_s = sftp->rename_packet =
LIBSSH2_ALLOC(session, packet_len);
if(!sftp->rename_packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for FXP_RENAME "
"packet");
}
_libssh2_store_u32(&sftp->rename_s, packet_len - 4);
*(sftp->rename_s++) = SSH_FXP_RENAME;
sftp->rename_request_id = sftp->request_id++;
_libssh2_store_u32(&sftp->rename_s, sftp->rename_request_id);
_libssh2_store_str(&sftp->rename_s, source_filename,
source_filename_len);
_libssh2_store_str(&sftp->rename_s, dest_filename, dest_filename_len);
if(sftp->version >= 5)
_libssh2_store_u32(&sftp->rename_s, flags);
sftp->rename_state = libssh2_NB_state_created;
}
if(sftp->rename_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, sftp->rename_packet,
sftp->rename_s - sftp->rename_packet);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if((ssize_t)packet_len != rc) {
LIBSSH2_FREE(session, sftp->rename_packet);
sftp->rename_packet = NULL;
sftp->rename_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send FXP_RENAME command");
}
LIBSSH2_FREE(session, sftp->rename_packet);
sftp->rename_packet = NULL;
sftp->rename_state = libssh2_NB_state_sent;
}
rc = sftp_packet_require(sftp, SSH_FXP_STATUS,
sftp->rename_request_id, &data,
&data_len, 9);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP rename packet too short");
}
else if(rc) {
sftp->rename_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Error waiting for FXP STATUS");
}
sftp->rename_state = libssh2_NB_state_idle;
retcode = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
sftp->last_errno = retcode;
/* now convert the SFTP error code to libssh2 return code or error
message */
switch(retcode) {
case LIBSSH2_FX_OK:
retcode = LIBSSH2_ERROR_NONE;
break;
case LIBSSH2_FX_FILE_ALREADY_EXISTS:
retcode = _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"File already exists and "
"SSH_FXP_RENAME_OVERWRITE not specified");
break;
case LIBSSH2_FX_OP_UNSUPPORTED:
retcode = _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Operation Not Supported");
break;
default:
retcode = _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error");
break;
}
return retcode;
}
/* libssh2_sftp_rename_ex
* Rename a file on the remote server
*/
LIBSSH2_API int
libssh2_sftp_rename_ex(LIBSSH2_SFTP *sftp, const char *source_filename,
unsigned int source_filename_len,
const char *dest_filename,
unsigned int dest_filename_len, long flags)
{
int rc;
if(!sftp)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, sftp->channel->session,
sftp_rename(sftp, source_filename, source_filename_len,
dest_filename, dest_filename_len, flags));
return rc;
}
/*
* sftp_fstatvfs
*
* Get file system statistics
*/
static int sftp_fstatvfs(LIBSSH2_SFTP_HANDLE *handle, LIBSSH2_SFTP_STATVFS *st)
{
LIBSSH2_SFTP *sftp = handle->sftp;
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
size_t data_len = 0;
/* 17 = packet_len(4) + packet_type(1) + request_id(4) + ext_len(4)
+ handle_len (4) */
/* 20 = strlen ("[email protected]") */
uint32_t packet_len = handle->handle_len + 20 + 17;
unsigned char *packet, *s, *data = NULL;
ssize_t rc;
unsigned int flag;
static const unsigned char responses[2] =
{ SSH_FXP_EXTENDED_REPLY, SSH_FXP_STATUS };
if(sftp->fstatvfs_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Getting file system statistics");
s = packet = LIBSSH2_ALLOC(session, packet_len);
if(!packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for FXP_EXTENDED "
"packet");
}
_libssh2_store_u32(&s, packet_len - 4);
*(s++) = SSH_FXP_EXTENDED;
sftp->fstatvfs_request_id = sftp->request_id++;
_libssh2_store_u32(&s, sftp->fstatvfs_request_id);
_libssh2_store_str(&s, "[email protected]", 20);
_libssh2_store_str(&s, handle->handle, handle->handle_len);
sftp->fstatvfs_state = libssh2_NB_state_created;
}
else {
packet = sftp->fstatvfs_packet;
}
if(sftp->fstatvfs_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, packet, packet_len);
if(rc == LIBSSH2_ERROR_EAGAIN ||
(0 <= rc && rc < (ssize_t)packet_len)) {
sftp->fstatvfs_packet = packet;
return LIBSSH2_ERROR_EAGAIN;
}
LIBSSH2_FREE(session, packet);
sftp->fstatvfs_packet = NULL;
if(rc < 0) {
sftp->fstatvfs_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"_libssh2_channel_write() failed");
}
sftp->fstatvfs_state = libssh2_NB_state_sent;
}
rc = sftp_packet_requirev(sftp, 2, responses, sftp->fstatvfs_request_id,
&data, &data_len, 9);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP rename packet too short");
}
else if(rc) {
sftp->fstatvfs_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Error waiting for FXP EXTENDED REPLY");
}
if(data[0] == SSH_FXP_STATUS) {
int retcode = _libssh2_ntohu32(data + 5);
sftp->fstatvfs_state = libssh2_NB_state_idle;
LIBSSH2_FREE(session, data);
sftp->last_errno = retcode;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error");
}
if(data_len < 93) {
LIBSSH2_FREE(session, data);
sftp->fstatvfs_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error: short response");
}
sftp->fstatvfs_state = libssh2_NB_state_idle;
st->f_bsize = _libssh2_ntohu64(data + 5);
st->f_frsize = _libssh2_ntohu64(data + 13);
st->f_blocks = _libssh2_ntohu64(data + 21);
st->f_bfree = _libssh2_ntohu64(data + 29);
st->f_bavail = _libssh2_ntohu64(data + 37);
st->f_files = _libssh2_ntohu64(data + 45);
st->f_ffree = _libssh2_ntohu64(data + 53);
st->f_favail = _libssh2_ntohu64(data + 61);
st->f_fsid = _libssh2_ntohu64(data + 69);
flag = (unsigned int)_libssh2_ntohu64(data + 77);
st->f_namemax = _libssh2_ntohu64(data + 85);
st->f_flag = (flag & SSH_FXE_STATVFS_ST_RDONLY)
? LIBSSH2_SFTP_ST_RDONLY : 0;
st->f_flag |= (flag & SSH_FXE_STATVFS_ST_NOSUID)
? LIBSSH2_SFTP_ST_NOSUID : 0;
LIBSSH2_FREE(session, data);
return 0;
}
/* libssh2_sftp_fstatvfs
* Get filesystem space and inode utilization (requires [email protected]
* support on the server)
*/
LIBSSH2_API int
libssh2_sftp_fstatvfs(LIBSSH2_SFTP_HANDLE *handle, LIBSSH2_SFTP_STATVFS *st)
{
int rc;
if(!handle || !st)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, handle->sftp->channel->session,
sftp_fstatvfs(handle, st));
return rc;
}
/*
* sftp_statvfs
*
* Get file system statistics
*/
static int sftp_statvfs(LIBSSH2_SFTP *sftp, const char *path,
unsigned int path_len, LIBSSH2_SFTP_STATVFS *st)
{
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
size_t data_len = 0;
/* 17 = packet_len(4) + packet_type(1) + request_id(4) + ext_len(4)
+ path_len (4) */
/* 19 = strlen ("[email protected]") */
uint32_t packet_len = path_len + 19 + 17;
unsigned char *packet, *s, *data = NULL;
ssize_t rc;
unsigned int flag;
static const unsigned char responses[2] =
{ SSH_FXP_EXTENDED_REPLY, SSH_FXP_STATUS };
if(sftp->statvfs_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Getting file system statistics of %s", path);
s = packet = LIBSSH2_ALLOC(session, packet_len);
if(!packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for FXP_EXTENDED "
"packet");
}
_libssh2_store_u32(&s, packet_len - 4);
*(s++) = SSH_FXP_EXTENDED;
sftp->statvfs_request_id = sftp->request_id++;
_libssh2_store_u32(&s, sftp->statvfs_request_id);
_libssh2_store_str(&s, "[email protected]", 19);
_libssh2_store_str(&s, path, path_len);
sftp->statvfs_state = libssh2_NB_state_created;
}
else {
packet = sftp->statvfs_packet;
}
if(sftp->statvfs_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, packet, packet_len);
if(rc == LIBSSH2_ERROR_EAGAIN ||
(0 <= rc && rc < (ssize_t)packet_len)) {
sftp->statvfs_packet = packet;
return LIBSSH2_ERROR_EAGAIN;
}
LIBSSH2_FREE(session, packet);
sftp->statvfs_packet = NULL;
if(rc < 0) {
sftp->statvfs_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"_libssh2_channel_write() failed");
}
sftp->statvfs_state = libssh2_NB_state_sent;
}
rc = sftp_packet_requirev(sftp, 2, responses, sftp->statvfs_request_id,
&data, &data_len, 9);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP fstat packet too short");
}
else if(rc) {
sftp->statvfs_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Error waiting for FXP EXTENDED REPLY");
}
if(data[0] == SSH_FXP_STATUS) {
int retcode = _libssh2_ntohu32(data + 5);
sftp->statvfs_state = libssh2_NB_state_idle;
LIBSSH2_FREE(session, data);
sftp->last_errno = retcode;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error");
}
if(data_len < 93) {
LIBSSH2_FREE(session, data);
sftp->statvfs_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error: short response");
}
sftp->statvfs_state = libssh2_NB_state_idle;
st->f_bsize = _libssh2_ntohu64(data + 5);
st->f_frsize = _libssh2_ntohu64(data + 13);
st->f_blocks = _libssh2_ntohu64(data + 21);
st->f_bfree = _libssh2_ntohu64(data + 29);
st->f_bavail = _libssh2_ntohu64(data + 37);
st->f_files = _libssh2_ntohu64(data + 45);
st->f_ffree = _libssh2_ntohu64(data + 53);
st->f_favail = _libssh2_ntohu64(data + 61);
st->f_fsid = _libssh2_ntohu64(data + 69);
flag = (unsigned int)_libssh2_ntohu64(data + 77);
st->f_namemax = _libssh2_ntohu64(data + 85);
st->f_flag = (flag & SSH_FXE_STATVFS_ST_RDONLY)
? LIBSSH2_SFTP_ST_RDONLY : 0;
st->f_flag |= (flag & SSH_FXE_STATVFS_ST_NOSUID)
? LIBSSH2_SFTP_ST_NOSUID : 0;
LIBSSH2_FREE(session, data);
return 0;
}
/* libssh2_sftp_statvfs_ex
* Get filesystem space and inode utilization (requires [email protected]
* support on the server)
*/
LIBSSH2_API int
libssh2_sftp_statvfs(LIBSSH2_SFTP *sftp, const char *path,
size_t path_len, LIBSSH2_SFTP_STATVFS *st)
{
int rc;
if(!sftp || !st)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, sftp->channel->session, sftp_statvfs(sftp, path, path_len,
st));
return rc;
}
/*
* sftp_mkdir
*
* Create an SFTP directory
*/
static int sftp_mkdir(LIBSSH2_SFTP *sftp, const char *path,
unsigned int path_len, long mode)
{
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
LIBSSH2_SFTP_ATTRIBUTES attrs = {
0, 0, 0, 0, 0, 0, 0
};
size_t data_len = 0;
int retcode;
ssize_t packet_len;
unsigned char *packet, *s, *data = NULL;
int rc;
if(mode != LIBSSH2_SFTP_DEFAULT_MODE) {
/* Filetype in SFTP 3 and earlier */
attrs.flags = LIBSSH2_SFTP_ATTR_PERMISSIONS;
attrs.permissions = mode | LIBSSH2_SFTP_ATTR_PFILETYPE_DIR;
}
/* 13 = packet_len(4) + packet_type(1) + request_id(4) + path_len(4) */
packet_len = path_len + 13 + sftp_attrsize(attrs.flags);
if(sftp->mkdir_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP,
"Creating directory %s with mode 0%lo", path, mode);
s = packet = LIBSSH2_ALLOC(session, packet_len);
if(!packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for FXP_MKDIR "
"packet");
}
_libssh2_store_u32(&s, packet_len - 4);
*(s++) = SSH_FXP_MKDIR;
sftp->mkdir_request_id = sftp->request_id++;
_libssh2_store_u32(&s, sftp->mkdir_request_id);
_libssh2_store_str(&s, path, path_len);
s += sftp_attr2bin(s, &attrs);
sftp->mkdir_state = libssh2_NB_state_created;
}
else {
packet = sftp->mkdir_packet;
}
if(sftp->mkdir_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, packet, packet_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
sftp->mkdir_packet = packet;
return rc;
}
if(packet_len != rc) {
LIBSSH2_FREE(session, packet);
sftp->mkdir_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"_libssh2_channel_write() failed");
}
LIBSSH2_FREE(session, packet);
sftp->mkdir_state = libssh2_NB_state_sent;
sftp->mkdir_packet = NULL;
}
rc = sftp_packet_require(sftp, SSH_FXP_STATUS, sftp->mkdir_request_id,
&data, &data_len, 9);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP mkdir packet too short");
}
else if(rc) {
sftp->mkdir_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Error waiting for FXP STATUS");
}
sftp->mkdir_state = libssh2_NB_state_idle;
retcode = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
if(retcode == LIBSSH2_FX_OK) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "OK!");
return 0;
}
else {
sftp->last_errno = retcode;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error");
}
}
/*
* libssh2_sftp_mkdir_ex
*
* Create an SFTP directory
*/
LIBSSH2_API int
libssh2_sftp_mkdir_ex(LIBSSH2_SFTP *sftp, const char *path,
unsigned int path_len, long mode)
{
int rc;
if(!sftp)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, sftp->channel->session,
sftp_mkdir(sftp, path, path_len, mode));
return rc;
}
/* sftp_rmdir
* Remove a directory
*/
static int sftp_rmdir(LIBSSH2_SFTP *sftp, const char *path,
unsigned int path_len)
{
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
size_t data_len = 0;
int retcode;
/* 13 = packet_len(4) + packet_type(1) + request_id(4) + path_len(4) */
ssize_t packet_len = path_len + 13;
unsigned char *s, *data = NULL;
int rc;
if(sftp->rmdir_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "Removing directory: %s",
path);
s = sftp->rmdir_packet = LIBSSH2_ALLOC(session, packet_len);
if(!sftp->rmdir_packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for FXP_RMDIR "
"packet");
}
_libssh2_store_u32(&s, packet_len - 4);
*(s++) = SSH_FXP_RMDIR;
sftp->rmdir_request_id = sftp->request_id++;
_libssh2_store_u32(&s, sftp->rmdir_request_id);
_libssh2_store_str(&s, path, path_len);
sftp->rmdir_state = libssh2_NB_state_created;
}
if(sftp->rmdir_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, sftp->rmdir_packet,
packet_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(packet_len != rc) {
LIBSSH2_FREE(session, sftp->rmdir_packet);
sftp->rmdir_packet = NULL;
sftp->rmdir_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send FXP_RMDIR command");
}
LIBSSH2_FREE(session, sftp->rmdir_packet);
sftp->rmdir_packet = NULL;
sftp->rmdir_state = libssh2_NB_state_sent;
}
rc = sftp_packet_require(sftp, SSH_FXP_STATUS,
sftp->rmdir_request_id, &data, &data_len, 9);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP rmdir packet too short");
}
else if(rc) {
sftp->rmdir_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Error waiting for FXP STATUS");
}
sftp->rmdir_state = libssh2_NB_state_idle;
retcode = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
if(retcode == LIBSSH2_FX_OK) {
return 0;
}
else {
sftp->last_errno = retcode;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error");
}
}
/* libssh2_sftp_rmdir_ex
* Remove a directory
*/
LIBSSH2_API int
libssh2_sftp_rmdir_ex(LIBSSH2_SFTP *sftp, const char *path,
unsigned int path_len)
{
int rc;
if(!sftp)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, sftp->channel->session,
sftp_rmdir(sftp, path, path_len));
return rc;
}
/* sftp_stat
* Stat a file or symbolic link
*/
static int sftp_stat(LIBSSH2_SFTP *sftp, const char *path,
unsigned int path_len, int stat_type,
LIBSSH2_SFTP_ATTRIBUTES * attrs)
{
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
size_t data_len = 0;
/* 13 = packet_len(4) + packet_type(1) + request_id(4) + path_len(4) */
ssize_t packet_len =
path_len + 13 +
((stat_type ==
LIBSSH2_SFTP_SETSTAT) ? sftp_attrsize(attrs->flags) : 0);
unsigned char *s, *data = NULL;
static const unsigned char stat_responses[2] =
{ SSH_FXP_ATTRS, SSH_FXP_STATUS };
int rc;
if(sftp->stat_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "%s %s",
(stat_type == LIBSSH2_SFTP_SETSTAT) ? "Set-statting" :
(stat_type ==
LIBSSH2_SFTP_LSTAT ? "LStatting" : "Statting"), path);
s = sftp->stat_packet = LIBSSH2_ALLOC(session, packet_len);
if(!sftp->stat_packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for FXP_*STAT "
"packet");
}
_libssh2_store_u32(&s, packet_len - 4);
switch(stat_type) {
case LIBSSH2_SFTP_SETSTAT:
*(s++) = SSH_FXP_SETSTAT;
break;
case LIBSSH2_SFTP_LSTAT:
*(s++) = SSH_FXP_LSTAT;
break;
case LIBSSH2_SFTP_STAT:
default:
*(s++) = SSH_FXP_STAT;
}
sftp->stat_request_id = sftp->request_id++;
_libssh2_store_u32(&s, sftp->stat_request_id);
_libssh2_store_str(&s, path, path_len);
if(stat_type == LIBSSH2_SFTP_SETSTAT)
s += sftp_attr2bin(s, attrs);
sftp->stat_state = libssh2_NB_state_created;
}
if(sftp->stat_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, sftp->stat_packet, packet_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(packet_len != rc) {
LIBSSH2_FREE(session, sftp->stat_packet);
sftp->stat_packet = NULL;
sftp->stat_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send STAT/LSTAT/SETSTAT command");
}
LIBSSH2_FREE(session, sftp->stat_packet);
sftp->stat_packet = NULL;
sftp->stat_state = libssh2_NB_state_sent;
}
rc = sftp_packet_requirev(sftp, 2, stat_responses,
sftp->stat_request_id, &data, &data_len, 9);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
else if(rc == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP stat packet too short");
}
else if(rc) {
sftp->stat_state = libssh2_NB_state_idle;
return _libssh2_error(session, rc,
"Timeout waiting for status message");
}
sftp->stat_state = libssh2_NB_state_idle;
if(data[0] == SSH_FXP_STATUS) {
int retcode;
retcode = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
if(retcode == LIBSSH2_FX_OK) {
memset(attrs, 0, sizeof(LIBSSH2_SFTP_ATTRIBUTES));
return 0;
}
else {
sftp->last_errno = retcode;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error");
}
}
memset(attrs, 0, sizeof(LIBSSH2_SFTP_ATTRIBUTES));
if(sftp_bin2attr(attrs, data + 5, data_len - 5) < 0) {
LIBSSH2_FREE(session, data);
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Attributes too short in SFTP fstat");
}
LIBSSH2_FREE(session, data);
return 0;
}
/* libssh2_sftp_stat_ex
* Stat a file or symbolic link
*/
LIBSSH2_API int
libssh2_sftp_stat_ex(LIBSSH2_SFTP *sftp, const char *path,
unsigned int path_len, int stat_type,
LIBSSH2_SFTP_ATTRIBUTES *attrs)
{
int rc;
if(!sftp)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, sftp->channel->session,
sftp_stat(sftp, path, path_len, stat_type, attrs));
return rc;
}
/* sftp_symlink
* Read or set a symlink
*/
static int sftp_symlink(LIBSSH2_SFTP *sftp, const char *path,
unsigned int path_len, char *target,
unsigned int target_len, int link_type)
{
LIBSSH2_CHANNEL *channel = sftp->channel;
LIBSSH2_SESSION *session = channel->session;
size_t data_len = 0, link_len;
/* 13 = packet_len(4) + packet_type(1) + request_id(4) + path_len(4) */
ssize_t packet_len =
path_len + 13 +
((link_type == LIBSSH2_SFTP_SYMLINK) ? (4 + target_len) : 0);
unsigned char *s, *data = NULL;
static const unsigned char link_responses[2] =
{ SSH_FXP_NAME, SSH_FXP_STATUS };
int retcode;
if((sftp->version < 3) && (link_type != LIBSSH2_SFTP_REALPATH)) {
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Server does not support SYMLINK or READLINK");
}
if(sftp->symlink_state == libssh2_NB_state_idle) {
s = sftp->symlink_packet = LIBSSH2_ALLOC(session, packet_len);
if(!sftp->symlink_packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"SYMLINK/READLINK/REALPATH packet");
}
_libssh2_debug(session, LIBSSH2_TRACE_SFTP, "%s %s on %s",
(link_type ==
LIBSSH2_SFTP_SYMLINK) ? "Creating" : "Reading",
(link_type ==
LIBSSH2_SFTP_REALPATH) ? "realpath" : "symlink", path);
_libssh2_store_u32(&s, packet_len - 4);
switch(link_type) {
case LIBSSH2_SFTP_REALPATH:
*(s++) = SSH_FXP_REALPATH;
break;
case LIBSSH2_SFTP_SYMLINK:
*(s++) = SSH_FXP_SYMLINK;
break;
case LIBSSH2_SFTP_READLINK:
default:
*(s++) = SSH_FXP_READLINK;
}
sftp->symlink_request_id = sftp->request_id++;
_libssh2_store_u32(&s, sftp->symlink_request_id);
_libssh2_store_str(&s, path, path_len);
if(link_type == LIBSSH2_SFTP_SYMLINK)
_libssh2_store_str(&s, target, target_len);
sftp->symlink_state = libssh2_NB_state_created;
}
if(sftp->symlink_state == libssh2_NB_state_created) {
ssize_t rc = _libssh2_channel_write(channel, 0, sftp->symlink_packet,
packet_len);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
else if(packet_len != rc) {
LIBSSH2_FREE(session, sftp->symlink_packet);
sftp->symlink_packet = NULL;
sftp->symlink_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send SYMLINK/READLINK command");
}
LIBSSH2_FREE(session, sftp->symlink_packet);
sftp->symlink_packet = NULL;
sftp->symlink_state = libssh2_NB_state_sent;
}
retcode = sftp_packet_requirev(sftp, 2, link_responses,
sftp->symlink_request_id, &data,
&data_len, 9);
if(retcode == LIBSSH2_ERROR_EAGAIN)
return retcode;
else if(retcode == LIBSSH2_ERROR_BUFFER_TOO_SMALL) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP symlink packet too short");
}
else if(retcode) {
sftp->symlink_state = libssh2_NB_state_idle;
return _libssh2_error(session, retcode,
"Error waiting for status message");
}
sftp->symlink_state = libssh2_NB_state_idle;
if(data[0] == SSH_FXP_STATUS) {
retcode = _libssh2_ntohu32(data + 5);
LIBSSH2_FREE(session, data);
if(retcode == LIBSSH2_FX_OK)
return LIBSSH2_ERROR_NONE;
else {
sftp->last_errno = retcode;
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP Protocol Error");
}
}
if(_libssh2_ntohu32(data + 5) < 1) {
LIBSSH2_FREE(session, data);
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"Invalid READLINK/REALPATH response, "
"no name entries");
}
if(data_len < 13) {
if(data_len > 0) {
LIBSSH2_FREE(session, data);
}
return _libssh2_error(session, LIBSSH2_ERROR_SFTP_PROTOCOL,
"SFTP stat packet too short");
}
/* this reads a u32 and stores it into a signed 32bit value */
link_len = _libssh2_ntohu32(data + 9);
if(link_len < target_len) {
memcpy(target, data + 13, link_len);
target[link_len] = 0;
retcode = (int)link_len;
}
else
retcode = LIBSSH2_ERROR_BUFFER_TOO_SMALL;
LIBSSH2_FREE(session, data);
return retcode;
}
/* libssh2_sftp_symlink_ex
* Read or set a symlink
*/
LIBSSH2_API int
libssh2_sftp_symlink_ex(LIBSSH2_SFTP *sftp, const char *path,
unsigned int path_len, char *target,
unsigned int target_len, int link_type)
{
int rc;
if(!sftp)
return LIBSSH2_ERROR_BAD_USE;
BLOCK_ADJUST(rc, sftp->channel->session,
sftp_symlink(sftp, path, path_len, target, target_len,
link_type));
return rc;
}
/* libssh2_sftp_last_error
* Returns the last error code reported by SFTP
*/
LIBSSH2_API unsigned long
libssh2_sftp_last_error(LIBSSH2_SFTP *sftp)
{
if(!sftp)
return 0;
return sftp->last_errno;
}
/* libssh2_sftp_get_channel
* Return the channel of sftp, then caller can control the channel's behavior.
*/
LIBSSH2_API LIBSSH2_CHANNEL *
libssh2_sftp_get_channel(LIBSSH2_SFTP *sftp)
{
if(!sftp)
return NULL;
return sftp->channel;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/session.c | /* Copyright (c) 2004-2007 Sara Golemon <[email protected]>
* Copyright (c) 2009-2015 by Daniel Stenberg
* Copyright (c) 2010 Simon Josefsson <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdlib.h>
#include <fcntl.h>
#ifdef HAVE_GETTIMEOFDAY
#include <sys/time.h>
#endif
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#include "transport.h"
#include "session.h"
#include "channel.h"
#include "mac.h"
#include "misc.h"
/* libssh2_default_alloc
*/
static
LIBSSH2_ALLOC_FUNC(libssh2_default_alloc)
{
(void) abstract;
return malloc(count);
}
/* libssh2_default_free
*/
static
LIBSSH2_FREE_FUNC(libssh2_default_free)
{
(void) abstract;
free(ptr);
}
/* libssh2_default_realloc
*/
static
LIBSSH2_REALLOC_FUNC(libssh2_default_realloc)
{
(void) abstract;
return realloc(ptr, count);
}
/*
* banner_receive
*
* Wait for a hello from the remote host
* Allocate a buffer and store the banner in session->remote.banner
* Returns: 0 on success, LIBSSH2_ERROR_EAGAIN if read would block, negative
* on failure
*/
static int
banner_receive(LIBSSH2_SESSION * session)
{
int ret;
int banner_len;
if(session->banner_TxRx_state == libssh2_NB_state_idle) {
banner_len = 0;
session->banner_TxRx_state = libssh2_NB_state_created;
}
else {
banner_len = session->banner_TxRx_total_send;
}
while((banner_len < (int) sizeof(session->banner_TxRx_banner)) &&
((banner_len == 0)
|| (session->banner_TxRx_banner[banner_len - 1] != '\n'))) {
char c = '\0';
/* no incoming block yet! */
session->socket_block_directions &= ~LIBSSH2_SESSION_BLOCK_INBOUND;
ret = LIBSSH2_RECV(session, &c, 1,
LIBSSH2_SOCKET_RECV_FLAGS(session));
if(ret < 0) {
if(session->api_block_mode || (ret != -EAGAIN))
/* ignore EAGAIN when non-blocking */
_libssh2_debug(session, LIBSSH2_TRACE_SOCKET,
"Error recving %d bytes: %d", 1, -ret);
}
else
_libssh2_debug(session, LIBSSH2_TRACE_SOCKET,
"Recved %d bytes banner", ret);
if(ret < 0) {
if(ret == -EAGAIN) {
session->socket_block_directions =
LIBSSH2_SESSION_BLOCK_INBOUND;
session->banner_TxRx_total_send = banner_len;
return LIBSSH2_ERROR_EAGAIN;
}
/* Some kinda error */
session->banner_TxRx_state = libssh2_NB_state_idle;
session->banner_TxRx_total_send = 0;
return LIBSSH2_ERROR_SOCKET_RECV;
}
if(ret == 0) {
session->socket_state = LIBSSH2_SOCKET_DISCONNECTED;
return LIBSSH2_ERROR_SOCKET_DISCONNECT;
}
if(c == '\0') {
/* NULLs are not allowed in SSH banners */
session->banner_TxRx_state = libssh2_NB_state_idle;
session->banner_TxRx_total_send = 0;
return LIBSSH2_ERROR_BANNER_RECV;
}
session->banner_TxRx_banner[banner_len++] = c;
}
while(banner_len &&
((session->banner_TxRx_banner[banner_len - 1] == '\n') ||
(session->banner_TxRx_banner[banner_len - 1] == '\r'))) {
banner_len--;
}
/* From this point on, we are done here */
session->banner_TxRx_state = libssh2_NB_state_idle;
session->banner_TxRx_total_send = 0;
if(!banner_len)
return LIBSSH2_ERROR_BANNER_RECV;
if(session->remote.banner)
LIBSSH2_FREE(session, session->remote.banner);
session->remote.banner = LIBSSH2_ALLOC(session, banner_len + 1);
if(!session->remote.banner) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Error allocating space for remote banner");
}
memcpy(session->remote.banner, session->banner_TxRx_banner, banner_len);
session->remote.banner[banner_len] = '\0';
_libssh2_debug(session, LIBSSH2_TRACE_TRANS, "Received Banner: %s",
session->remote.banner);
return LIBSSH2_ERROR_NONE;
}
/*
* banner_send
*
* Send the default banner, or the one set via libssh2_setopt_string
*
* Returns LIBSSH2_ERROR_EAGAIN if it would block - and if it does so, you
* should call this function again as soon as it is likely that more data can
* be sent, and this function should then be called with the same argument set
* (same data pointer and same data_len) until zero or failure is returned.
*/
static int
banner_send(LIBSSH2_SESSION * session)
{
char *banner = (char *) LIBSSH2_SSH_DEFAULT_BANNER_WITH_CRLF;
int banner_len = sizeof(LIBSSH2_SSH_DEFAULT_BANNER_WITH_CRLF) - 1;
ssize_t ret;
#ifdef LIBSSH2DEBUG
char banner_dup[256];
#endif
if(session->banner_TxRx_state == libssh2_NB_state_idle) {
if(session->local.banner) {
/* setopt_string will have given us our \r\n characters */
banner_len = strlen((char *) session->local.banner);
banner = (char *) session->local.banner;
}
#ifdef LIBSSH2DEBUG
/* Hack and slash to avoid sending CRLF in debug output */
if(banner_len < 256) {
memcpy(banner_dup, banner, banner_len - 2);
banner_dup[banner_len - 2] = '\0';
}
else {
memcpy(banner_dup, banner, 255);
banner_dup[255] = '\0';
}
_libssh2_debug(session, LIBSSH2_TRACE_TRANS, "Sending Banner: %s",
banner_dup);
#endif
session->banner_TxRx_state = libssh2_NB_state_created;
}
/* no outgoing block yet! */
session->socket_block_directions &= ~LIBSSH2_SESSION_BLOCK_OUTBOUND;
ret = LIBSSH2_SEND(session,
banner + session->banner_TxRx_total_send,
banner_len - session->banner_TxRx_total_send,
LIBSSH2_SOCKET_SEND_FLAGS(session));
if(ret < 0)
_libssh2_debug(session, LIBSSH2_TRACE_SOCKET,
"Error sending %d bytes: %d",
banner_len - session->banner_TxRx_total_send, -ret);
else
_libssh2_debug(session, LIBSSH2_TRACE_SOCKET,
"Sent %d/%d bytes at %p+%d", ret,
banner_len - session->banner_TxRx_total_send,
banner, session->banner_TxRx_total_send);
if(ret != (banner_len - session->banner_TxRx_total_send)) {
if(ret >= 0 || ret == -EAGAIN) {
/* the whole packet could not be sent, save the what was */
session->socket_block_directions =
LIBSSH2_SESSION_BLOCK_OUTBOUND;
if(ret > 0)
session->banner_TxRx_total_send += ret;
return LIBSSH2_ERROR_EAGAIN;
}
session->banner_TxRx_state = libssh2_NB_state_idle;
session->banner_TxRx_total_send = 0;
return LIBSSH2_ERROR_SOCKET_RECV;
}
/* Set the state back to idle */
session->banner_TxRx_state = libssh2_NB_state_idle;
session->banner_TxRx_total_send = 0;
return 0;
}
/*
* session_nonblock() sets the given socket to either blocking or
* non-blocking mode based on the 'nonblock' boolean argument. This function
* is copied from the libcurl sources with permission.
*/
static int
session_nonblock(libssh2_socket_t sockfd, /* operate on this */
int nonblock /* TRUE or FALSE */ )
{
#undef SETBLOCK
#define SETBLOCK 0
#ifdef HAVE_O_NONBLOCK
/* most recent unix versions */
int flags;
flags = fcntl(sockfd, F_GETFL, 0);
if(nonblock)
return fcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
else
return fcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK));
#undef SETBLOCK
#define SETBLOCK 1
#endif
#if defined(HAVE_FIONBIO) && (SETBLOCK == 0)
/* older unix versions and VMS*/
int flags;
flags = nonblock;
return ioctl(sockfd, FIONBIO, &flags);
#undef SETBLOCK
#define SETBLOCK 2
#endif
#if defined(HAVE_IOCTLSOCKET) && (SETBLOCK == 0)
/* Windows? */
unsigned long flags;
flags = nonblock;
return ioctlsocket(sockfd, FIONBIO, &flags);
#undef SETBLOCK
#define SETBLOCK 3
#endif
#if defined(HAVE_IOCTLSOCKET_CASE) && (SETBLOCK == 0)
/* presumably for Amiga */
return IoctlSocket(sockfd, FIONBIO, (long) nonblock);
#undef SETBLOCK
#define SETBLOCK 4
#endif
#if defined(HAVE_SO_NONBLOCK) && (SETBLOCK == 0)
/* BeOS */
long b = nonblock ? 1 : 0;
return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
#undef SETBLOCK
#define SETBLOCK 5
#endif
#ifdef HAVE_DISABLED_NONBLOCKING
return 0; /* returns success */
#undef SETBLOCK
#define SETBLOCK 6
#endif
#if(SETBLOCK == 0)
#error "no non-blocking method was found/used/set"
#endif
}
/*
* get_socket_nonblocking()
*
* gets the given blocking or non-blocking state of the socket.
*/
static int
get_socket_nonblocking(int sockfd)
{ /* operate on this */
#undef GETBLOCK
#define GETBLOCK 0
#ifdef HAVE_O_NONBLOCK
/* most recent unix versions */
int flags = fcntl(sockfd, F_GETFL, 0);
if(flags == -1) {
/* Assume blocking on error */
return 1;
}
return (flags & O_NONBLOCK);
#undef GETBLOCK
#define GETBLOCK 1
#endif
#if defined(WSAEWOULDBLOCK) && (GETBLOCK == 0)
/* Windows? */
unsigned int option_value;
socklen_t option_len = sizeof(option_value);
if(getsockopt
(sockfd, SOL_SOCKET, SO_ERROR, (void *) &option_value, &option_len)) {
/* Assume blocking on error */
return 1;
}
return (int) option_value;
#undef GETBLOCK
#define GETBLOCK 2
#endif
#if defined(HAVE_SO_NONBLOCK) && (GETBLOCK == 0)
/* BeOS */
long b;
if(getsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b))) {
/* Assume blocking on error */
return 1;
}
return (int) b;
#undef GETBLOCK
#define GETBLOCK 5
#endif
#if defined(SO_STATE) && defined(__VMS) && (GETBLOCK == 0)
/* VMS TCP/IP Services */
size_t sockstat = 0;
int callstat = 0;
size_t size = sizeof(int);
callstat = getsockopt(sockfd, SOL_SOCKET, SO_STATE,
(char *)&sockstat, &size);
if(callstat == -1) return 0;
if((sockstat&SS_NBIO) != 0) return 1;
return 0;
#undef GETBLOCK
#define GETBLOCK 6
#endif
#ifdef HAVE_DISABLED_NONBLOCKING
return 1; /* returns blocking */
#undef GETBLOCK
#define GETBLOCK 7
#endif
#if(GETBLOCK == 0)
#error "no non-blocking method was found/used/get"
#endif
}
/* libssh2_session_banner_set
* Set the local banner to use in the server handshake.
*/
LIBSSH2_API int
libssh2_session_banner_set(LIBSSH2_SESSION * session, const char *banner)
{
size_t banner_len = banner ? strlen(banner) : 0;
if(session->local.banner) {
LIBSSH2_FREE(session, session->local.banner);
session->local.banner = NULL;
}
if(!banner_len)
return 0;
session->local.banner = LIBSSH2_ALLOC(session, banner_len + 3);
if(!session->local.banner) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for local banner");
}
memcpy(session->local.banner, banner, banner_len);
/* first zero terminate like this so that the debug output is nice */
session->local.banner[banner_len] = '\0';
_libssh2_debug(session, LIBSSH2_TRACE_TRANS, "Setting local Banner: %s",
session->local.banner);
session->local.banner[banner_len++] = '\r';
session->local.banner[banner_len++] = '\n';
session->local.banner[banner_len] = '\0';
return 0;
}
/* libssh2_banner_set
* Set the local banner. DEPRECATED VERSION
*/
LIBSSH2_API int
libssh2_banner_set(LIBSSH2_SESSION * session, const char *banner)
{
return libssh2_session_banner_set(session, banner);
}
/*
* libssh2_session_init_ex
*
* Allocate and initialize a libssh2 session structure. Allows for malloc
* callbacks in case the calling program has its own memory manager It's
* allowable (but unadvisable) to define some but not all of the malloc
* callbacks An additional pointer value may be optionally passed to be sent
* to the callbacks (so they know who's asking)
*/
LIBSSH2_API LIBSSH2_SESSION *
libssh2_session_init_ex(LIBSSH2_ALLOC_FUNC((*my_alloc)),
LIBSSH2_FREE_FUNC((*my_free)),
LIBSSH2_REALLOC_FUNC((*my_realloc)), void *abstract)
{
LIBSSH2_ALLOC_FUNC((*local_alloc)) = libssh2_default_alloc;
LIBSSH2_FREE_FUNC((*local_free)) = libssh2_default_free;
LIBSSH2_REALLOC_FUNC((*local_realloc)) = libssh2_default_realloc;
LIBSSH2_SESSION *session;
if(my_alloc) {
local_alloc = my_alloc;
}
if(my_free) {
local_free = my_free;
}
if(my_realloc) {
local_realloc = my_realloc;
}
session = local_alloc(sizeof(LIBSSH2_SESSION), &abstract);
if(session) {
memset(session, 0, sizeof(LIBSSH2_SESSION));
session->alloc = local_alloc;
session->free = local_free;
session->realloc = local_realloc;
session->send = _libssh2_send;
session->recv = _libssh2_recv;
session->abstract = abstract;
session->api_timeout = 0; /* timeout-free API by default */
session->api_block_mode = 1; /* blocking API by default */
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"New session resource allocated");
_libssh2_init_if_needed();
}
return session;
}
/*
* libssh2_session_callback_set
*
* Set (or reset) a callback function
* Returns the prior address
*
* ALERT: this function relies on that we can typecast function pointers
* to void pointers, which isn't allowed in ISO C!
*/
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpedantic"
LIBSSH2_API void *
libssh2_session_callback_set(LIBSSH2_SESSION * session,
int cbtype, void *callback)
{
void *oldcb;
switch(cbtype) {
case LIBSSH2_CALLBACK_IGNORE:
oldcb = session->ssh_msg_ignore;
session->ssh_msg_ignore = callback;
return oldcb;
case LIBSSH2_CALLBACK_DEBUG:
oldcb = session->ssh_msg_debug;
session->ssh_msg_debug = callback;
return oldcb;
case LIBSSH2_CALLBACK_DISCONNECT:
oldcb = session->ssh_msg_disconnect;
session->ssh_msg_disconnect = callback;
return oldcb;
case LIBSSH2_CALLBACK_MACERROR:
oldcb = session->macerror;
session->macerror = callback;
return oldcb;
case LIBSSH2_CALLBACK_X11:
oldcb = session->x11;
session->x11 = callback;
return oldcb;
case LIBSSH2_CALLBACK_SEND:
oldcb = session->send;
session->send = callback;
return oldcb;
case LIBSSH2_CALLBACK_RECV:
oldcb = session->recv;
session->recv = callback;
return oldcb;
}
_libssh2_debug(session, LIBSSH2_TRACE_TRANS, "Setting Callback %d",
cbtype);
return NULL;
}
#pragma GCC diagnostic pop
/*
* _libssh2_wait_socket()
*
* Utility function that waits for action on the socket. Returns 0 when ready
* to run again or error on timeout.
*/
int _libssh2_wait_socket(LIBSSH2_SESSION *session, time_t start_time)
{
int rc;
int seconds_to_next;
int dir;
int has_timeout;
long ms_to_next = 0;
long elapsed_ms;
/* since libssh2 often sets EAGAIN internally before this function is
called, we can decrease some amount of confusion in user programs by
resetting the error code in this function to reduce the risk of EAGAIN
being stored as error when a blocking function has returned */
session->err_code = LIBSSH2_ERROR_NONE;
rc = libssh2_keepalive_send(session, &seconds_to_next);
if(rc)
return rc;
ms_to_next = seconds_to_next * 1000;
/* figure out what to wait for */
dir = libssh2_session_block_directions(session);
if(!dir) {
_libssh2_debug(session, LIBSSH2_TRACE_SOCKET,
"Nothing to wait for in wait_socket");
/* To avoid that we hang below just because there's nothing set to
wait for, we timeout on 1 second to also avoid busy-looping
during this condition */
ms_to_next = 1000;
}
if(session->api_timeout > 0 &&
(seconds_to_next == 0 ||
ms_to_next > session->api_timeout)) {
time_t now = time(NULL);
elapsed_ms = (long)(1000*difftime(now, start_time));
if(elapsed_ms > session->api_timeout) {
return _libssh2_error(session, LIBSSH2_ERROR_TIMEOUT,
"API timeout expired");
}
ms_to_next = (session->api_timeout - elapsed_ms);
has_timeout = 1;
}
else if(ms_to_next > 0) {
has_timeout = 1;
}
else
has_timeout = 0;
#ifdef HAVE_POLL
{
struct pollfd sockets[1];
sockets[0].fd = session->socket_fd;
sockets[0].events = 0;
sockets[0].revents = 0;
if(dir & LIBSSH2_SESSION_BLOCK_INBOUND)
sockets[0].events |= POLLIN;
if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND)
sockets[0].events |= POLLOUT;
rc = poll(sockets, 1, has_timeout?ms_to_next: -1);
}
#else
{
fd_set rfd;
fd_set wfd;
fd_set *writefd = NULL;
fd_set *readfd = NULL;
struct timeval tv;
tv.tv_sec = ms_to_next / 1000;
tv.tv_usec = (ms_to_next - tv.tv_sec*1000) * 1000;
if(dir & LIBSSH2_SESSION_BLOCK_INBOUND) {
FD_ZERO(&rfd);
FD_SET(session->socket_fd, &rfd);
readfd = &rfd;
}
if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND) {
FD_ZERO(&wfd);
FD_SET(session->socket_fd, &wfd);
writefd = &wfd;
}
rc = select(session->socket_fd + 1, readfd, writefd, NULL,
has_timeout ? &tv : NULL);
}
#endif
if(rc == 0) {
return _libssh2_error(session, LIBSSH2_ERROR_TIMEOUT,
"Timed out waiting on socket");
}
if(rc < 0) {
return _libssh2_error(session, LIBSSH2_ERROR_TIMEOUT,
"Error waiting on socket");
}
return 0; /* ready to try again */
}
static int
session_startup(LIBSSH2_SESSION *session, libssh2_socket_t sock)
{
int rc;
if(session->startup_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"session_startup for socket %d", sock);
if(LIBSSH2_INVALID_SOCKET == sock) {
/* Did we forget something? */
return _libssh2_error(session, LIBSSH2_ERROR_BAD_SOCKET,
"Bad socket provided");
}
session->socket_fd = sock;
session->socket_prev_blockstate =
!get_socket_nonblocking(session->socket_fd);
if(session->socket_prev_blockstate) {
/* If in blocking state change to non-blocking */
rc = session_nonblock(session->socket_fd, 1);
if(rc) {
return _libssh2_error(session, rc,
"Failed changing socket's "
"blocking state to non-blocking");
}
}
session->startup_state = libssh2_NB_state_created;
}
if(session->startup_state == libssh2_NB_state_created) {
rc = banner_send(session);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
else if(rc) {
return _libssh2_error(session, rc,
"Failed sending banner");
}
session->startup_state = libssh2_NB_state_sent;
session->banner_TxRx_state = libssh2_NB_state_idle;
}
if(session->startup_state == libssh2_NB_state_sent) {
do {
rc = banner_receive(session);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
else if(rc)
return _libssh2_error(session, rc,
"Failed getting banner");
} while(strncmp("SSH-", (char *)session->remote.banner, 4));
session->startup_state = libssh2_NB_state_sent1;
}
if(session->startup_state == libssh2_NB_state_sent1) {
rc = _libssh2_kex_exchange(session, 0, &session->startup_key_state);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
else if(rc)
return _libssh2_error(session, rc,
"Unable to exchange encryption keys");
session->startup_state = libssh2_NB_state_sent2;
}
if(session->startup_state == libssh2_NB_state_sent2) {
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"Requesting userauth service");
/* Request the userauth service */
session->startup_service[0] = SSH_MSG_SERVICE_REQUEST;
_libssh2_htonu32(session->startup_service + 1,
sizeof("ssh-userauth") - 1);
memcpy(session->startup_service + 5, "ssh-userauth",
sizeof("ssh-userauth") - 1);
session->startup_state = libssh2_NB_state_sent3;
}
if(session->startup_state == libssh2_NB_state_sent3) {
rc = _libssh2_transport_send(session, session->startup_service,
sizeof("ssh-userauth") + 5 - 1,
NULL, 0);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
else if(rc) {
return _libssh2_error(session, rc,
"Unable to ask for ssh-userauth service");
}
session->startup_state = libssh2_NB_state_sent4;
}
if(session->startup_state == libssh2_NB_state_sent4) {
rc = _libssh2_packet_require(session, SSH_MSG_SERVICE_ACCEPT,
&session->startup_data,
&session->startup_data_len, 0, NULL, 0,
&session->startup_req_state);
if(rc)
return rc;
if(session->startup_data_len < 5) {
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unexpected packet length");
}
session->startup_service_length =
_libssh2_ntohu32(session->startup_data + 1);
if((session->startup_service_length != (sizeof("ssh-userauth") - 1))
|| strncmp("ssh-userauth", (char *) session->startup_data + 5,
session->startup_service_length)) {
LIBSSH2_FREE(session, session->startup_data);
session->startup_data = NULL;
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Invalid response received from server");
}
LIBSSH2_FREE(session, session->startup_data);
session->startup_data = NULL;
session->startup_state = libssh2_NB_state_idle;
return 0;
}
/* just for safety return some error */
return LIBSSH2_ERROR_INVAL;
}
/*
* libssh2_session_handshake()
*
* session: LIBSSH2_SESSION struct allocated and owned by the calling program
* sock: *must* be populated with an opened and connected socket.
*
* Returns: 0 on success, or non-zero on failure
*/
LIBSSH2_API int
libssh2_session_handshake(LIBSSH2_SESSION *session, libssh2_socket_t sock)
{
int rc;
BLOCK_ADJUST(rc, session, session_startup(session, sock) );
return rc;
}
/*
* libssh2_session_startup()
*
* DEPRECATED. Use libssh2_session_handshake() instead! This function is not
* portable enough.
*
* session: LIBSSH2_SESSION struct allocated and owned by the calling program
* sock: *must* be populated with an opened and connected socket.
*
* Returns: 0 on success, or non-zero on failure
*/
LIBSSH2_API int
libssh2_session_startup(LIBSSH2_SESSION *session, int sock)
{
return libssh2_session_handshake(session, (libssh2_socket_t) sock);
}
/*
* libssh2_session_free
*
* Frees the memory allocated to the session
* Also closes and frees any channels attached to this session
*/
static int
session_free(LIBSSH2_SESSION *session)
{
int rc;
LIBSSH2_PACKET *pkg;
LIBSSH2_CHANNEL *ch;
LIBSSH2_LISTENER *l;
int packets_left = 0;
if(session->free_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"Freeing session resource",
session->remote.banner);
session->free_state = libssh2_NB_state_created;
}
if(session->free_state == libssh2_NB_state_created) {
while((ch = _libssh2_list_first(&session->channels))) {
rc = _libssh2_channel_free(ch);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
}
session->free_state = libssh2_NB_state_sent;
}
if(session->free_state == libssh2_NB_state_sent) {
while((l = _libssh2_list_first(&session->listeners))) {
rc = _libssh2_channel_forward_cancel(l);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
}
session->free_state = libssh2_NB_state_sent1;
}
if(session->state & LIBSSH2_STATE_NEWKEYS) {
/* hostkey */
if(session->hostkey && session->hostkey->dtor) {
session->hostkey->dtor(session, &session->server_hostkey_abstract);
}
/* Client to Server */
/* crypt */
if(session->local.crypt && session->local.crypt->dtor) {
session->local.crypt->dtor(session,
&session->local.crypt_abstract);
}
/* comp */
if(session->local.comp && session->local.comp->dtor) {
session->local.comp->dtor(session, 1,
&session->local.comp_abstract);
}
/* mac */
if(session->local.mac && session->local.mac->dtor) {
session->local.mac->dtor(session, &session->local.mac_abstract);
}
/* Server to Client */
/* crypt */
if(session->remote.crypt && session->remote.crypt->dtor) {
session->remote.crypt->dtor(session,
&session->remote.crypt_abstract);
}
/* comp */
if(session->remote.comp && session->remote.comp->dtor) {
session->remote.comp->dtor(session, 0,
&session->remote.comp_abstract);
}
/* mac */
if(session->remote.mac && session->remote.mac->dtor) {
session->remote.mac->dtor(session, &session->remote.mac_abstract);
}
/* session_id */
if(session->session_id) {
LIBSSH2_FREE(session, session->session_id);
}
}
/* Free banner(s) */
if(session->remote.banner) {
LIBSSH2_FREE(session, session->remote.banner);
}
if(session->local.banner) {
LIBSSH2_FREE(session, session->local.banner);
}
/* Free preference(s) */
if(session->kex_prefs) {
LIBSSH2_FREE(session, session->kex_prefs);
}
if(session->hostkey_prefs) {
LIBSSH2_FREE(session, session->hostkey_prefs);
}
if(session->local.kexinit) {
LIBSSH2_FREE(session, session->local.kexinit);
}
if(session->local.crypt_prefs) {
LIBSSH2_FREE(session, session->local.crypt_prefs);
}
if(session->local.mac_prefs) {
LIBSSH2_FREE(session, session->local.mac_prefs);
}
if(session->local.comp_prefs) {
LIBSSH2_FREE(session, session->local.comp_prefs);
}
if(session->local.lang_prefs) {
LIBSSH2_FREE(session, session->local.lang_prefs);
}
if(session->remote.kexinit) {
LIBSSH2_FREE(session, session->remote.kexinit);
}
if(session->remote.crypt_prefs) {
LIBSSH2_FREE(session, session->remote.crypt_prefs);
}
if(session->remote.mac_prefs) {
LIBSSH2_FREE(session, session->remote.mac_prefs);
}
if(session->remote.comp_prefs) {
LIBSSH2_FREE(session, session->remote.comp_prefs);
}
if(session->remote.lang_prefs) {
LIBSSH2_FREE(session, session->remote.lang_prefs);
}
/*
* Make sure all memory used in the state variables are free
*/
if(session->kexinit_data) {
LIBSSH2_FREE(session, session->kexinit_data);
}
if(session->startup_data) {
LIBSSH2_FREE(session, session->startup_data);
}
if(session->userauth_list_data) {
LIBSSH2_FREE(session, session->userauth_list_data);
}
if(session->userauth_pswd_data) {
LIBSSH2_FREE(session, session->userauth_pswd_data);
}
if(session->userauth_pswd_newpw) {
LIBSSH2_FREE(session, session->userauth_pswd_newpw);
}
if(session->userauth_host_packet) {
LIBSSH2_FREE(session, session->userauth_host_packet);
}
if(session->userauth_host_method) {
LIBSSH2_FREE(session, session->userauth_host_method);
}
if(session->userauth_host_data) {
LIBSSH2_FREE(session, session->userauth_host_data);
}
if(session->userauth_pblc_data) {
LIBSSH2_FREE(session, session->userauth_pblc_data);
}
if(session->userauth_pblc_packet) {
LIBSSH2_FREE(session, session->userauth_pblc_packet);
}
if(session->userauth_pblc_method) {
LIBSSH2_FREE(session, session->userauth_pblc_method);
}
if(session->userauth_kybd_data) {
LIBSSH2_FREE(session, session->userauth_kybd_data);
}
if(session->userauth_kybd_packet) {
LIBSSH2_FREE(session, session->userauth_kybd_packet);
}
if(session->userauth_kybd_auth_instruction) {
LIBSSH2_FREE(session, session->userauth_kybd_auth_instruction);
}
if(session->open_packet) {
LIBSSH2_FREE(session, session->open_packet);
}
if(session->open_data) {
LIBSSH2_FREE(session, session->open_data);
}
if(session->direct_message) {
LIBSSH2_FREE(session, session->direct_message);
}
if(session->fwdLstn_packet) {
LIBSSH2_FREE(session, session->fwdLstn_packet);
}
if(session->pkeyInit_data) {
LIBSSH2_FREE(session, session->pkeyInit_data);
}
if(session->scpRecv_command) {
LIBSSH2_FREE(session, session->scpRecv_command);
}
if(session->scpSend_command) {
LIBSSH2_FREE(session, session->scpSend_command);
}
if(session->sftpInit_sftp) {
LIBSSH2_FREE(session, session->sftpInit_sftp);
}
/* Free payload buffer */
if(session->packet.total_num) {
LIBSSH2_FREE(session, session->packet.payload);
}
/* Cleanup all remaining packets */
while((pkg = _libssh2_list_first(&session->packets))) {
packets_left++;
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"packet left with id %d", pkg->data[0]);
/* unlink the node */
_libssh2_list_remove(&pkg->node);
/* free */
LIBSSH2_FREE(session, pkg->data);
LIBSSH2_FREE(session, pkg);
}
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"Extra packets left %d", packets_left);
if(session->socket_prev_blockstate) {
/* if the socket was previously blocking, put it back so */
rc = session_nonblock(session->socket_fd, 0);
if(rc) {
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"unable to reset socket's blocking state");
}
}
if(session->server_hostkey) {
LIBSSH2_FREE(session, session->server_hostkey);
}
/* error string */
if(session->err_msg &&
((session->err_flags & LIBSSH2_ERR_FLAG_DUP) != 0)) {
LIBSSH2_FREE(session, (char *)session->err_msg);
}
LIBSSH2_FREE(session, session);
return 0;
}
/*
* libssh2_session_free
*
* Frees the memory allocated to the session
* Also closes and frees any channels attached to this session
*/
LIBSSH2_API int
libssh2_session_free(LIBSSH2_SESSION * session)
{
int rc;
BLOCK_ADJUST(rc, session, session_free(session) );
return rc;
}
/*
* libssh2_session_disconnect_ex
*/
static int
session_disconnect(LIBSSH2_SESSION *session, int reason,
const char *description,
const char *lang)
{
unsigned char *s;
unsigned long descr_len = 0, lang_len = 0;
int rc;
if(session->disconnect_state == libssh2_NB_state_idle) {
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"Disconnecting: reason=%d, desc=%s, lang=%s", reason,
description, lang);
if(description)
descr_len = strlen(description);
if(lang)
lang_len = strlen(lang);
if(descr_len > 256)
return _libssh2_error(session, LIBSSH2_ERROR_INVAL,
"too long description");
/* 13 = packet_type(1) + reason code(4) + descr_len(4) + lang_len(4) */
session->disconnect_data_len = descr_len + lang_len + 13;
s = session->disconnect_data;
*(s++) = SSH_MSG_DISCONNECT;
_libssh2_store_u32(&s, reason);
_libssh2_store_str(&s, description, descr_len);
/* store length only, lang is sent separately */
_libssh2_store_u32(&s, lang_len);
session->disconnect_state = libssh2_NB_state_created;
}
rc = _libssh2_transport_send(session, session->disconnect_data,
session->disconnect_data_len,
(unsigned char *)lang, lang_len);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
session->disconnect_state = libssh2_NB_state_idle;
return 0;
}
/*
* libssh2_session_disconnect_ex
*/
LIBSSH2_API int
libssh2_session_disconnect_ex(LIBSSH2_SESSION *session, int reason,
const char *desc, const char *lang)
{
int rc;
session->state &= ~LIBSSH2_STATE_EXCHANGING_KEYS;
BLOCK_ADJUST(rc, session,
session_disconnect(session, reason, desc, lang));
return rc;
}
/* libssh2_session_methods
*
* Return the currently active methods for method_type
*
* NOTE: Currently lang_cs and lang_sc are ALWAYS set to empty string
* regardless of actual negotiation Strings should NOT be freed
*/
LIBSSH2_API const char *
libssh2_session_methods(LIBSSH2_SESSION * session, int method_type)
{
/* All methods have char *name as their first element */
const LIBSSH2_KEX_METHOD *method = NULL;
switch(method_type) {
case LIBSSH2_METHOD_KEX:
method = session->kex;
break;
case LIBSSH2_METHOD_HOSTKEY:
method = (LIBSSH2_KEX_METHOD *) session->hostkey;
break;
case LIBSSH2_METHOD_CRYPT_CS:
method = (LIBSSH2_KEX_METHOD *) session->local.crypt;
break;
case LIBSSH2_METHOD_CRYPT_SC:
method = (LIBSSH2_KEX_METHOD *) session->remote.crypt;
break;
case LIBSSH2_METHOD_MAC_CS:
method = (LIBSSH2_KEX_METHOD *) session->local.mac;
break;
case LIBSSH2_METHOD_MAC_SC:
method = (LIBSSH2_KEX_METHOD *) session->remote.mac;
break;
case LIBSSH2_METHOD_COMP_CS:
method = (LIBSSH2_KEX_METHOD *) session->local.comp;
break;
case LIBSSH2_METHOD_COMP_SC:
method = (LIBSSH2_KEX_METHOD *) session->remote.comp;
break;
case LIBSSH2_METHOD_LANG_CS:
return "";
case LIBSSH2_METHOD_LANG_SC:
return "";
default:
_libssh2_error(session, LIBSSH2_ERROR_INVAL,
"Invalid parameter specified for method_type");
return NULL;
}
if(!method) {
_libssh2_error(session, LIBSSH2_ERROR_METHOD_NONE,
"No method negotiated");
return NULL;
}
return method->name;
}
/* libssh2_session_abstract
* Retrieve a pointer to the abstract property
*/
LIBSSH2_API void **
libssh2_session_abstract(LIBSSH2_SESSION * session)
{
return &session->abstract;
}
/* libssh2_session_last_error
*
* Returns error code and populates an error string into errmsg If want_buf is
* non-zero then the string placed into errmsg must be freed by the calling
* program. Otherwise it is assumed to be owned by libssh2
*/
LIBSSH2_API int
libssh2_session_last_error(LIBSSH2_SESSION * session, char **errmsg,
int *errmsg_len, int want_buf)
{
size_t msglen = 0;
/* No error to report */
if(!session->err_code) {
if(errmsg) {
if(want_buf) {
*errmsg = LIBSSH2_ALLOC(session, 1);
if(*errmsg) {
**errmsg = 0;
}
}
else {
*errmsg = (char *) "";
}
}
if(errmsg_len) {
*errmsg_len = 0;
}
return 0;
}
if(errmsg) {
const char *error = session->err_msg ? session->err_msg : "";
msglen = strlen(error);
if(want_buf) {
/* Make a copy so the calling program can own it */
*errmsg = LIBSSH2_ALLOC(session, msglen + 1);
if(*errmsg) {
memcpy(*errmsg, error, msglen);
(*errmsg)[msglen] = 0;
}
}
else
*errmsg = (char *)error;
}
if(errmsg_len) {
*errmsg_len = msglen;
}
return session->err_code;
}
/* libssh2_session_last_errno
*
* Returns error code
*/
LIBSSH2_API int
libssh2_session_last_errno(LIBSSH2_SESSION * session)
{
return session->err_code;
}
/* libssh2_session_set_last_error
*
* Sets the internal error code for the session.
*
* This function is available specifically to be used by high level
* language wrappers (i.e. Python or Perl) that may extend the library
* features while still relying on its error reporting mechanism.
*/
LIBSSH2_API int
libssh2_session_set_last_error(LIBSSH2_SESSION* session,
int errcode,
const char *errmsg)
{
return _libssh2_error_flags(session, errcode, errmsg,
LIBSSH2_ERR_FLAG_DUP);
}
/* Libssh2_session_flag
*
* Set/Get session flags
*
* Return error code.
*/
LIBSSH2_API int
libssh2_session_flag(LIBSSH2_SESSION * session, int flag, int value)
{
switch(flag) {
case LIBSSH2_FLAG_SIGPIPE:
session->flag.sigpipe = value;
break;
case LIBSSH2_FLAG_COMPRESS:
session->flag.compress = value;
break;
default:
/* unknown flag */
return LIBSSH2_ERROR_INVAL;
}
return LIBSSH2_ERROR_NONE;
}
/* _libssh2_session_set_blocking
*
* Set a session's blocking mode on or off, return the previous status when
* this function is called. Note this function does not alter the state of the
* actual socket involved.
*/
int
_libssh2_session_set_blocking(LIBSSH2_SESSION *session, int blocking)
{
int bl = session->api_block_mode;
_libssh2_debug(session, LIBSSH2_TRACE_CONN,
"Setting blocking mode %s", blocking?"ON":"OFF");
session->api_block_mode = blocking;
return bl;
}
/* libssh2_session_set_blocking
*
* Set a channel's blocking mode on or off, similar to a socket's
* fcntl(fd, F_SETFL, O_NONBLOCK); type command
*/
LIBSSH2_API void
libssh2_session_set_blocking(LIBSSH2_SESSION * session, int blocking)
{
(void) _libssh2_session_set_blocking(session, blocking);
}
/* libssh2_session_get_blocking
*
* Returns a session's blocking mode on or off
*/
LIBSSH2_API int
libssh2_session_get_blocking(LIBSSH2_SESSION * session)
{
return session->api_block_mode;
}
/* libssh2_session_set_timeout
*
* Set a session's timeout (in msec) for blocking mode,
* or 0 to disable timeouts.
*/
LIBSSH2_API void
libssh2_session_set_timeout(LIBSSH2_SESSION * session, long timeout)
{
session->api_timeout = timeout;
}
/* libssh2_session_get_timeout
*
* Returns a session's timeout, or 0 if disabled
*/
LIBSSH2_API long
libssh2_session_get_timeout(LIBSSH2_SESSION * session)
{
return session->api_timeout;
}
/*
* libssh2_poll_channel_read
*
* Returns 0 if no data is waiting on channel,
* non-0 if data is available
*/
LIBSSH2_API int
libssh2_poll_channel_read(LIBSSH2_CHANNEL *channel, int extended)
{
LIBSSH2_SESSION *session;
LIBSSH2_PACKET *packet;
if(!channel)
return LIBSSH2_ERROR_BAD_USE;
session = channel->session;
packet = _libssh2_list_first(&session->packets);
while(packet) {
if(packet->data_len < 5) {
return _libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Packet too small");
}
if(channel->local.id == _libssh2_ntohu32(packet->data + 1)) {
if(extended == 1 &&
(packet->data[0] == SSH_MSG_CHANNEL_EXTENDED_DATA
|| packet->data[0] == SSH_MSG_CHANNEL_DATA)) {
return 1;
}
else if(extended == 0 &&
packet->data[0] == SSH_MSG_CHANNEL_DATA) {
return 1;
}
/* else - no data of any type is ready to be read */
}
packet = _libssh2_list_next(&packet->node);
}
return 0;
}
/*
* poll_channel_write
*
* Returns 0 if writing to channel would block,
* non-0 if data can be written without blocking
*/
static inline int
poll_channel_write(LIBSSH2_CHANNEL * channel)
{
return channel->local.window_size ? 1 : 0;
}
/* poll_listener_queued
*
* Returns 0 if no connections are waiting to be accepted
* non-0 if one or more connections are available
*/
static inline int
poll_listener_queued(LIBSSH2_LISTENER * listener)
{
return _libssh2_list_first(&listener->queue) ? 1 : 0;
}
/*
* libssh2_poll
*
* Poll sockets, channels, and listeners for activity
*/
LIBSSH2_API int
libssh2_poll(LIBSSH2_POLLFD * fds, unsigned int nfds, long timeout)
{
long timeout_remaining;
unsigned int i, active_fds;
#ifdef HAVE_POLL
LIBSSH2_SESSION *session = NULL;
#ifdef HAVE_ALLOCA
struct pollfd *sockets = alloca(sizeof(struct pollfd) * nfds);
#else
struct pollfd sockets[256];
if(nfds > 256)
/* systems without alloca use a fixed-size array, this can be fixed if
we really want to, at least if the compiler is a C99 capable one */
return -1;
#endif
/* Setup sockets for polling */
for(i = 0; i < nfds; i++) {
fds[i].revents = 0;
switch(fds[i].type) {
case LIBSSH2_POLLFD_SOCKET:
sockets[i].fd = fds[i].fd.socket;
sockets[i].events = fds[i].events;
sockets[i].revents = 0;
break;
case LIBSSH2_POLLFD_CHANNEL:
sockets[i].fd = fds[i].fd.channel->session->socket_fd;
sockets[i].events = POLLIN;
sockets[i].revents = 0;
if(!session)
session = fds[i].fd.channel->session;
break;
case LIBSSH2_POLLFD_LISTENER:
sockets[i].fd = fds[i].fd.listener->session->socket_fd;
sockets[i].events = POLLIN;
sockets[i].revents = 0;
if(!session)
session = fds[i].fd.listener->session;
break;
default:
if(session)
_libssh2_error(session, LIBSSH2_ERROR_INVALID_POLL_TYPE,
"Invalid descriptor passed to libssh2_poll()");
return -1;
}
}
#elif defined(HAVE_SELECT)
LIBSSH2_SESSION *session = NULL;
libssh2_socket_t maxfd = 0;
fd_set rfds, wfds;
struct timeval tv;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
for(i = 0; i < nfds; i++) {
fds[i].revents = 0;
switch(fds[i].type) {
case LIBSSH2_POLLFD_SOCKET:
if(fds[i].events & LIBSSH2_POLLFD_POLLIN) {
FD_SET(fds[i].fd.socket, &rfds);
if(fds[i].fd.socket > maxfd)
maxfd = fds[i].fd.socket;
}
if(fds[i].events & LIBSSH2_POLLFD_POLLOUT) {
FD_SET(fds[i].fd.socket, &wfds);
if(fds[i].fd.socket > maxfd)
maxfd = fds[i].fd.socket;
}
break;
case LIBSSH2_POLLFD_CHANNEL:
FD_SET(fds[i].fd.channel->session->socket_fd, &rfds);
if(fds[i].fd.channel->session->socket_fd > maxfd)
maxfd = fds[i].fd.channel->session->socket_fd;
if(!session)
session = fds[i].fd.channel->session;
break;
case LIBSSH2_POLLFD_LISTENER:
FD_SET(fds[i].fd.listener->session->socket_fd, &rfds);
if(fds[i].fd.listener->session->socket_fd > maxfd)
maxfd = fds[i].fd.listener->session->socket_fd;
if(!session)
session = fds[i].fd.listener->session;
break;
default:
if(session)
_libssh2_error(session, LIBSSH2_ERROR_INVALID_POLL_TYPE,
"Invalid descriptor passed to libssh2_poll()");
return -1;
}
}
#else
/* No select() or poll()
* no sockets structure to setup
*/
timeout = 0;
#endif /* HAVE_POLL or HAVE_SELECT */
timeout_remaining = timeout;
do {
#if defined(HAVE_POLL) || defined(HAVE_SELECT)
int sysret;
#endif
active_fds = 0;
for(i = 0; i < nfds; i++) {
if(fds[i].events != fds[i].revents) {
switch(fds[i].type) {
case LIBSSH2_POLLFD_CHANNEL:
if((fds[i].events & LIBSSH2_POLLFD_POLLIN) &&
/* Want to be ready for read */
((fds[i].revents & LIBSSH2_POLLFD_POLLIN) == 0)) {
/* Not yet known to be ready for read */
fds[i].revents |=
libssh2_poll_channel_read(fds[i].fd.channel,
0) ?
LIBSSH2_POLLFD_POLLIN : 0;
}
if((fds[i].events & LIBSSH2_POLLFD_POLLEXT) &&
/* Want to be ready for extended read */
((fds[i].revents & LIBSSH2_POLLFD_POLLEXT) == 0)) {
/* Not yet known to be ready for extended read */
fds[i].revents |=
libssh2_poll_channel_read(fds[i].fd.channel,
1) ?
LIBSSH2_POLLFD_POLLEXT : 0;
}
if((fds[i].events & LIBSSH2_POLLFD_POLLOUT) &&
/* Want to be ready for write */
((fds[i].revents & LIBSSH2_POLLFD_POLLOUT) == 0)) {
/* Not yet known to be ready for write */
fds[i].revents |=
poll_channel_write(fds[i].fd. channel) ?
LIBSSH2_POLLFD_POLLOUT : 0;
}
if(fds[i].fd.channel->remote.close
|| fds[i].fd.channel->local.close) {
fds[i].revents |= LIBSSH2_POLLFD_CHANNEL_CLOSED;
}
if(fds[i].fd.channel->session->socket_state ==
LIBSSH2_SOCKET_DISCONNECTED) {
fds[i].revents |=
LIBSSH2_POLLFD_CHANNEL_CLOSED |
LIBSSH2_POLLFD_SESSION_CLOSED;
}
break;
case LIBSSH2_POLLFD_LISTENER:
if((fds[i].events & LIBSSH2_POLLFD_POLLIN) &&
/* Want a connection */
((fds[i].revents & LIBSSH2_POLLFD_POLLIN) == 0)) {
/* No connections known of yet */
fds[i].revents |=
poll_listener_queued(fds[i].fd. listener) ?
LIBSSH2_POLLFD_POLLIN : 0;
}
if(fds[i].fd.listener->session->socket_state ==
LIBSSH2_SOCKET_DISCONNECTED) {
fds[i].revents |=
LIBSSH2_POLLFD_LISTENER_CLOSED |
LIBSSH2_POLLFD_SESSION_CLOSED;
}
break;
}
}
if(fds[i].revents) {
active_fds++;
}
}
if(active_fds) {
/* Don't block on the sockets if we have channels/listeners which
are ready */
timeout_remaining = 0;
}
#ifdef HAVE_POLL
#ifdef HAVE_LIBSSH2_GETTIMEOFDAY
{
struct timeval tv_begin, tv_end;
_libssh2_gettimeofday((struct timeval *) &tv_begin, NULL);
sysret = poll(sockets, nfds, timeout_remaining);
_libssh2_gettimeofday((struct timeval *) &tv_end, NULL);
timeout_remaining -= (tv_end.tv_sec - tv_begin.tv_sec) * 1000;
timeout_remaining -= (tv_end.tv_usec - tv_begin.tv_usec) / 1000;
}
#else
/* If the platform doesn't support gettimeofday,
* then just make the call non-blocking and walk away
*/
sysret = poll(sockets, nfds, timeout_remaining);
timeout_remaining = 0;
#endif /* HAVE_GETTIMEOFDAY */
if(sysret > 0) {
for(i = 0; i < nfds; i++) {
switch(fds[i].type) {
case LIBSSH2_POLLFD_SOCKET:
fds[i].revents = sockets[i].revents;
sockets[i].revents = 0; /* In case we loop again, be
nice */
if(fds[i].revents) {
active_fds++;
}
break;
case LIBSSH2_POLLFD_CHANNEL:
if(sockets[i].events & POLLIN) {
/* Spin session until no data available */
while(_libssh2_transport_read(fds[i].fd.
channel->session)
> 0);
}
if(sockets[i].revents & POLLHUP) {
fds[i].revents |=
LIBSSH2_POLLFD_CHANNEL_CLOSED |
LIBSSH2_POLLFD_SESSION_CLOSED;
}
sockets[i].revents = 0;
break;
case LIBSSH2_POLLFD_LISTENER:
if(sockets[i].events & POLLIN) {
/* Spin session until no data available */
while(_libssh2_transport_read(fds[i].fd.
listener->session)
> 0);
}
if(sockets[i].revents & POLLHUP) {
fds[i].revents |=
LIBSSH2_POLLFD_LISTENER_CLOSED |
LIBSSH2_POLLFD_SESSION_CLOSED;
}
sockets[i].revents = 0;
break;
}
}
}
#elif defined(HAVE_SELECT)
tv.tv_sec = timeout_remaining / 1000;
tv.tv_usec = (timeout_remaining % 1000) * 1000;
#ifdef HAVE_LIBSSH2_GETTIMEOFDAY
{
struct timeval tv_begin, tv_end;
_libssh2_gettimeofday((struct timeval *) &tv_begin, NULL);
sysret = select(maxfd + 1, &rfds, &wfds, NULL, &tv);
_libssh2_gettimeofday((struct timeval *) &tv_end, NULL);
timeout_remaining -= (tv_end.tv_sec - tv_begin.tv_sec) * 1000;
timeout_remaining -= (tv_end.tv_usec - tv_begin.tv_usec) / 1000;
}
#else
/* If the platform doesn't support gettimeofday,
* then just make the call non-blocking and walk away
*/
sysret = select(maxfd + 1, &rfds, &wfds, NULL, &tv);
timeout_remaining = 0;
#endif
if(sysret > 0) {
for(i = 0; i < nfds; i++) {
switch(fds[i].type) {
case LIBSSH2_POLLFD_SOCKET:
if(FD_ISSET(fds[i].fd.socket, &rfds)) {
fds[i].revents |= LIBSSH2_POLLFD_POLLIN;
}
if(FD_ISSET(fds[i].fd.socket, &wfds)) {
fds[i].revents |= LIBSSH2_POLLFD_POLLOUT;
}
if(fds[i].revents) {
active_fds++;
}
break;
case LIBSSH2_POLLFD_CHANNEL:
if(FD_ISSET(fds[i].fd.channel->session->socket_fd,
&rfds)) {
/* Spin session until no data available */
while(_libssh2_transport_read(fds[i].fd.
channel->session)
> 0);
}
break;
case LIBSSH2_POLLFD_LISTENER:
if(FD_ISSET
(fds[i].fd.listener->session->socket_fd, &rfds)) {
/* Spin session until no data available */
while(_libssh2_transport_read(fds[i].fd.
listener->session)
> 0);
}
break;
}
}
}
#endif /* else no select() or poll() -- timeout (and by extension
* timeout_remaining) will be equal to 0 */
} while((timeout_remaining > 0) && !active_fds);
return active_fds;
}
/*
* libssh2_session_block_directions
*
* Get blocked direction when a function returns LIBSSH2_ERROR_EAGAIN
* Returns LIBSSH2_SOCKET_BLOCK_INBOUND if recv() blocked
* or LIBSSH2_SOCKET_BLOCK_OUTBOUND if send() blocked
*/
LIBSSH2_API int
libssh2_session_block_directions(LIBSSH2_SESSION *session)
{
return session->socket_block_directions;
}
/* libssh2_session_banner_get
* Get the remote banner (server ID string)
*/
LIBSSH2_API const char *
libssh2_session_banner_get(LIBSSH2_SESSION *session)
{
/* to avoid a coredump when session is NULL */
if(NULL == session)
return NULL;
if(NULL == session->remote.banner)
return NULL;
return (const char *) session->remote.banner;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/libgcrypt.c | /* Copyright (C) 2008, 2009, Simon Josefsson
* Copyright (C) 2006, 2007, The Written Word, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#ifdef LIBSSH2_LIBGCRYPT /* compile only if we build with libgcrypt */
#include <string.h>
int
_libssh2_rsa_new(libssh2_rsa_ctx ** rsa,
const unsigned char *edata,
unsigned long elen,
const unsigned char *ndata,
unsigned long nlen,
const unsigned char *ddata,
unsigned long dlen,
const unsigned char *pdata,
unsigned long plen,
const unsigned char *qdata,
unsigned long qlen,
const unsigned char *e1data,
unsigned long e1len,
const unsigned char *e2data,
unsigned long e2len,
const unsigned char *coeffdata, unsigned long coefflen)
{
int rc;
(void) e1data;
(void) e1len;
(void) e2data;
(void) e2len;
if(ddata) {
rc = gcry_sexp_build
(rsa, NULL,
"(private-key(rsa(n%b)(e%b)(d%b)(q%b)(p%b)(u%b)))",
nlen, ndata, elen, edata, dlen, ddata, plen, pdata,
qlen, qdata, coefflen, coeffdata);
}
else {
rc = gcry_sexp_build(rsa, NULL, "(public-key(rsa(n%b)(e%b)))",
nlen, ndata, elen, edata);
}
if(rc) {
*rsa = NULL;
return -1;
}
return 0;
}
int
_libssh2_rsa_sha1_verify(libssh2_rsa_ctx * rsa,
const unsigned char *sig,
unsigned long sig_len,
const unsigned char *m, unsigned long m_len)
{
unsigned char hash[SHA_DIGEST_LENGTH];
gcry_sexp_t s_sig, s_hash;
int rc = -1;
libssh2_sha1(m, m_len, hash);
rc = gcry_sexp_build(&s_hash, NULL,
"(data (flags pkcs1) (hash sha1 %b))",
SHA_DIGEST_LENGTH, hash);
if(rc != 0) {
return -1;
}
rc = gcry_sexp_build(&s_sig, NULL, "(sig-val(rsa(s %b)))", sig_len, sig);
if(rc != 0) {
gcry_sexp_release(s_hash);
return -1;
}
rc = gcry_pk_verify(s_sig, s_hash, rsa);
gcry_sexp_release(s_sig);
gcry_sexp_release(s_hash);
return (rc == 0) ? 0 : -1;
}
int
_libssh2_dsa_new(libssh2_dsa_ctx ** dsactx,
const unsigned char *p,
unsigned long p_len,
const unsigned char *q,
unsigned long q_len,
const unsigned char *g,
unsigned long g_len,
const unsigned char *y,
unsigned long y_len,
const unsigned char *x, unsigned long x_len)
{
int rc;
if(x_len) {
rc = gcry_sexp_build
(dsactx, NULL,
"(private-key(dsa(p%b)(q%b)(g%b)(y%b)(x%b)))",
p_len, p, q_len, q, g_len, g, y_len, y, x_len, x);
}
else {
rc = gcry_sexp_build(dsactx, NULL,
"(public-key(dsa(p%b)(q%b)(g%b)(y%b)))",
p_len, p, q_len, q, g_len, g, y_len, y);
}
if(rc) {
*dsactx = NULL;
return -1;
}
return 0;
}
int
_libssh2_rsa_new_private_frommemory(libssh2_rsa_ctx ** rsa,
LIBSSH2_SESSION * session,
const char *filedata, size_t filedata_len,
unsigned const char *passphrase)
{
return _libssh2_error(session, LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unable to extract private key from memory: "
"Method unimplemented in libgcrypt backend");
}
int
_libssh2_rsa_new_private(libssh2_rsa_ctx ** rsa,
LIBSSH2_SESSION * session,
const char *filename, unsigned const char *passphrase)
{
FILE *fp;
unsigned char *data, *save_data;
unsigned int datalen;
int ret;
unsigned char *n, *e, *d, *p, *q, *e1, *e2, *coeff;
unsigned int nlen, elen, dlen, plen, qlen, e1len, e2len, coefflen;
fp = fopen(filename, FOPEN_READTEXT);
if(!fp) {
return -1;
}
ret = _libssh2_pem_parse(session,
"-----BEGIN RSA PRIVATE KEY-----",
"-----END RSA PRIVATE KEY-----",
passphrase,
fp, &data, &datalen);
fclose(fp);
if(ret) {
return -1;
}
save_data = data;
if(_libssh2_pem_decode_sequence(&data, &datalen)) {
ret = -1;
goto fail;
}
/* First read Version field (should be 0). */
ret = _libssh2_pem_decode_integer(&data, &datalen, &n, &nlen);
if(ret != 0 || (nlen != 1 && *n != '\0')) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &n, &nlen);
if(ret != 0) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &e, &elen);
if(ret != 0) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &d, &dlen);
if(ret != 0) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &p, &plen);
if(ret != 0) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &q, &qlen);
if(ret != 0) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &e1, &e1len);
if(ret != 0) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &e2, &e2len);
if(ret != 0) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &coeff, &coefflen);
if(ret != 0) {
ret = -1;
goto fail;
}
if(_libssh2_rsa_new(rsa, e, elen, n, nlen, d, dlen, p, plen,
q, qlen, e1, e1len, e2, e2len, coeff, coefflen)) {
ret = -1;
goto fail;
}
ret = 0;
fail:
LIBSSH2_FREE(session, save_data);
return ret;
}
int
_libssh2_dsa_new_private_frommemory(libssh2_dsa_ctx ** dsa,
LIBSSH2_SESSION * session,
const char *filedata, size_t filedata_len,
unsigned const char *passphrase)
{
return _libssh2_error(session, LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unable to extract private key from memory: "
"Method unimplemented in libgcrypt backend");
}
int
_libssh2_dsa_new_private(libssh2_dsa_ctx ** dsa,
LIBSSH2_SESSION * session,
const char *filename, unsigned const char *passphrase)
{
FILE *fp;
unsigned char *data, *save_data;
unsigned int datalen;
int ret;
unsigned char *p, *q, *g, *y, *x;
unsigned int plen, qlen, glen, ylen, xlen;
fp = fopen(filename, FOPEN_READTEXT);
if(!fp) {
return -1;
}
ret = _libssh2_pem_parse(session,
"-----BEGIN DSA PRIVATE KEY-----",
"-----END DSA PRIVATE KEY-----",
passphrase,
fp, &data, &datalen);
fclose(fp);
if(ret) {
return -1;
}
save_data = data;
if(_libssh2_pem_decode_sequence(&data, &datalen)) {
ret = -1;
goto fail;
}
/* First read Version field (should be 0). */
ret = _libssh2_pem_decode_integer(&data, &datalen, &p, &plen);
if(ret != 0 || (plen != 1 && *p != '\0')) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &p, &plen);
if(ret != 0) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &q, &qlen);
if(ret != 0) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &g, &glen);
if(ret != 0) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &y, &ylen);
if(ret != 0) {
ret = -1;
goto fail;
}
ret = _libssh2_pem_decode_integer(&data, &datalen, &x, &xlen);
if(ret != 0) {
ret = -1;
goto fail;
}
if(datalen != 0) {
ret = -1;
goto fail;
}
if(_libssh2_dsa_new(dsa, p, plen, q, qlen, g, glen, y, ylen, x, xlen)) {
ret = -1;
goto fail;
}
ret = 0;
fail:
LIBSSH2_FREE(session, save_data);
return ret;
}
int
_libssh2_rsa_sha1_sign(LIBSSH2_SESSION * session,
libssh2_rsa_ctx * rsactx,
const unsigned char *hash,
size_t hash_len,
unsigned char **signature, size_t *signature_len)
{
gcry_sexp_t sig_sexp;
gcry_sexp_t data;
int rc;
const char *tmp;
size_t size;
if(hash_len != SHA_DIGEST_LENGTH) {
return -1;
}
if(gcry_sexp_build(&data, NULL,
"(data (flags pkcs1) (hash sha1 %b))",
hash_len, hash)) {
return -1;
}
rc = gcry_pk_sign(&sig_sexp, data, rsactx);
gcry_sexp_release(data);
if(rc != 0) {
return -1;
}
data = gcry_sexp_find_token(sig_sexp, "s", 0);
if(!data) {
return -1;
}
tmp = gcry_sexp_nth_data(data, 1, &size);
if(!tmp) {
gcry_sexp_release(data);
return -1;
}
if(tmp[0] == '\0') {
tmp++;
size--;
}
*signature = LIBSSH2_ALLOC(session, size);
if(!*signature) {
gcry_sexp_release(data);
return -1;
}
memcpy(*signature, tmp, size);
*signature_len = size;
gcry_sexp_release(data);
return rc;
}
int
_libssh2_dsa_sha1_sign(libssh2_dsa_ctx * dsactx,
const unsigned char *hash,
unsigned long hash_len, unsigned char *sig)
{
unsigned char zhash[SHA_DIGEST_LENGTH + 1];
gcry_sexp_t sig_sexp;
gcry_sexp_t data;
int ret;
const char *tmp;
size_t size;
if(hash_len != SHA_DIGEST_LENGTH) {
return -1;
}
memcpy(zhash + 1, hash, hash_len);
zhash[0] = 0;
if(gcry_sexp_build(&data, NULL, "(data (value %b))",
hash_len + 1, zhash)) {
return -1;
}
ret = gcry_pk_sign(&sig_sexp, data, dsactx);
gcry_sexp_release(data);
if(ret != 0) {
return -1;
}
memset(sig, 0, 40);
/* Extract R. */
data = gcry_sexp_find_token(sig_sexp, "r", 0);
if(!data)
goto err;
tmp = gcry_sexp_nth_data(data, 1, &size);
if(!tmp)
goto err;
if(tmp[0] == '\0') {
tmp++;
size--;
}
if(size < 1 || size > 20)
goto err;
memcpy(sig + (20 - size), tmp, size);
gcry_sexp_release(data);
/* Extract S. */
data = gcry_sexp_find_token(sig_sexp, "s", 0);
if(!data)
goto err;
tmp = gcry_sexp_nth_data(data, 1, &size);
if(!tmp)
goto err;
if(tmp[0] == '\0') {
tmp++;
size--;
}
if(size < 1 || size > 20)
goto err;
memcpy(sig + 20 + (20 - size), tmp, size);
goto out;
err:
ret = -1;
out:
if(sig_sexp) {
gcry_sexp_release(sig_sexp);
}
if(data) {
gcry_sexp_release(data);
}
return ret;
}
int
_libssh2_dsa_sha1_verify(libssh2_dsa_ctx * dsactx,
const unsigned char *sig,
const unsigned char *m, unsigned long m_len)
{
unsigned char hash[SHA_DIGEST_LENGTH + 1];
gcry_sexp_t s_sig, s_hash;
int rc = -1;
libssh2_sha1(m, m_len, hash + 1);
hash[0] = 0;
if(gcry_sexp_build(&s_hash, NULL, "(data(flags raw)(value %b))",
SHA_DIGEST_LENGTH + 1, hash)) {
return -1;
}
if(gcry_sexp_build(&s_sig, NULL, "(sig-val(dsa(r %b)(s %b)))",
20, sig, 20, sig + 20)) {
gcry_sexp_release(s_hash);
return -1;
}
rc = gcry_pk_verify(s_sig, s_hash, dsactx);
gcry_sexp_release(s_sig);
gcry_sexp_release(s_hash);
return (rc == 0) ? 0 : -1;
}
int
_libssh2_cipher_init(_libssh2_cipher_ctx * h,
_libssh2_cipher_type(algo),
unsigned char *iv, unsigned char *secret, int encrypt)
{
int ret;
int cipher = _libssh2_gcry_cipher(algo);
int mode = _libssh2_gcry_mode(algo);
int keylen = gcry_cipher_get_algo_keylen(cipher);
(void) encrypt;
ret = gcry_cipher_open(h, cipher, mode, 0);
if(ret) {
return -1;
}
ret = gcry_cipher_setkey(*h, secret, keylen);
if(ret) {
gcry_cipher_close(*h);
return -1;
}
if(mode != GCRY_CIPHER_MODE_STREAM) {
int blklen = gcry_cipher_get_algo_blklen(cipher);
if(mode == GCRY_CIPHER_MODE_CTR)
ret = gcry_cipher_setctr(*h, iv, blklen);
else
ret = gcry_cipher_setiv(*h, iv, blklen);
if(ret) {
gcry_cipher_close(*h);
return -1;
}
}
return 0;
}
int
_libssh2_cipher_crypt(_libssh2_cipher_ctx * ctx,
_libssh2_cipher_type(algo),
int encrypt, unsigned char *block, size_t blklen)
{
int cipher = _libssh2_gcry_cipher(algo);
int ret;
if(encrypt) {
ret = gcry_cipher_encrypt(*ctx, block, blklen, block, blklen);
}
else {
ret = gcry_cipher_decrypt(*ctx, block, blklen, block, blklen);
}
return ret;
}
int
_libssh2_pub_priv_keyfilememory(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekeydata,
size_t privatekeydata_len,
const char *passphrase)
{
return _libssh2_error(session, LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unable to extract public key from private "
"key in memory: "
"Method unimplemented in libgcrypt backend");
}
int
_libssh2_pub_priv_keyfile(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekey,
const char *passphrase)
{
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to extract public key from private key file: "
"Method unimplemented in libgcrypt backend");
}
void _libssh2_init_aes_ctr(void)
{
/* no implementation */
}
void
_libssh2_dh_init(_libssh2_dh_ctx *dhctx)
{
*dhctx = gcry_mpi_new(0); /* Random from client */
}
int
_libssh2_dh_key_pair(_libssh2_dh_ctx *dhctx, _libssh2_bn *public,
_libssh2_bn *g, _libssh2_bn *p, int group_order)
{
/* Generate x and e */
gcry_mpi_randomize(*dhctx, group_order * 8 - 1, GCRY_WEAK_RANDOM);
gcry_mpi_powm(public, g, *dhctx, p);
return 0;
}
int
_libssh2_dh_secret(_libssh2_dh_ctx *dhctx, _libssh2_bn *secret,
_libssh2_bn *f, _libssh2_bn *p)
{
/* Compute the shared secret */
gcry_mpi_powm(secret, f, *dhctx, p);
return 0;
}
void
_libssh2_dh_dtor(_libssh2_dh_ctx *dhctx)
{
gcry_mpi_release(*dhctx);
*dhctx = NULL;
}
#endif /* LIBSSH2_LIBGCRYPT */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/packet.h | #ifndef __LIBSSH2_PACKET_H
#define __LIBSSH2_PACKET_H
/*
* Copyright (C) 2010 by Daniel Stenberg
* Author: Daniel Stenberg <[email protected]>
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
*/
int _libssh2_packet_read(LIBSSH2_SESSION * session);
int _libssh2_packet_ask(LIBSSH2_SESSION * session, unsigned char packet_type,
unsigned char **data, size_t *data_len,
int match_ofs,
const unsigned char *match_buf,
size_t match_len);
int _libssh2_packet_askv(LIBSSH2_SESSION * session,
const unsigned char *packet_types,
unsigned char **data, size_t *data_len,
int match_ofs,
const unsigned char *match_buf,
size_t match_len);
int _libssh2_packet_require(LIBSSH2_SESSION * session,
unsigned char packet_type, unsigned char **data,
size_t *data_len, int match_ofs,
const unsigned char *match_buf,
size_t match_len,
packet_require_state_t * state);
int _libssh2_packet_requirev(LIBSSH2_SESSION *session,
const unsigned char *packet_types,
unsigned char **data, size_t *data_len,
int match_ofs,
const unsigned char *match_buf,
size_t match_len,
packet_requirev_state_t * state);
int _libssh2_packet_burn(LIBSSH2_SESSION * session,
libssh2_nonblocking_states * state);
int _libssh2_packet_write(LIBSSH2_SESSION * session, unsigned char *data,
unsigned long data_len);
int _libssh2_packet_add(LIBSSH2_SESSION * session, unsigned char *data,
size_t datalen, int macstate);
#endif /* __LIBSSH2_PACKET_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/publickey.c | /* Copyright (c) 2004-2007, Sara Golemon <[email protected]>
* Copyright (c) 2010-2014 by Daniel Stenberg
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include "libssh2_publickey.h"
#include "channel.h"
#include "session.h"
#define LIBSSH2_PUBLICKEY_VERSION 2
/* Numericised response codes -- Not IETF, just local representation */
#define LIBSSH2_PUBLICKEY_RESPONSE_STATUS 0
#define LIBSSH2_PUBLICKEY_RESPONSE_VERSION 1
#define LIBSSH2_PUBLICKEY_RESPONSE_PUBLICKEY 2
typedef struct _LIBSSH2_PUBLICKEY_CODE_LIST
{
int code;
const char *name;
int name_len;
} LIBSSH2_PUBLICKEY_CODE_LIST;
static const LIBSSH2_PUBLICKEY_CODE_LIST publickey_response_codes[] =
{
{LIBSSH2_PUBLICKEY_RESPONSE_STATUS, "status", sizeof("status") - 1},
{LIBSSH2_PUBLICKEY_RESPONSE_VERSION, "version", sizeof("version") - 1},
{LIBSSH2_PUBLICKEY_RESPONSE_PUBLICKEY, "publickey",
sizeof("publickey") - 1},
{0, NULL, 0}
};
/* PUBLICKEY status codes -- IETF defined */
#define LIBSSH2_PUBLICKEY_SUCCESS 0
#define LIBSSH2_PUBLICKEY_ACCESS_DENIED 1
#define LIBSSH2_PUBLICKEY_STORAGE_EXCEEDED 2
#define LIBSSH2_PUBLICKEY_VERSION_NOT_SUPPORTED 3
#define LIBSSH2_PUBLICKEY_KEY_NOT_FOUND 4
#define LIBSSH2_PUBLICKEY_KEY_NOT_SUPPORTED 5
#define LIBSSH2_PUBLICKEY_KEY_ALREADY_PRESENT 6
#define LIBSSH2_PUBLICKEY_GENERAL_FAILURE 7
#define LIBSSH2_PUBLICKEY_REQUEST_NOT_SUPPORTED 8
#define LIBSSH2_PUBLICKEY_STATUS_CODE_MAX 8
static const LIBSSH2_PUBLICKEY_CODE_LIST publickey_status_codes[] = {
{LIBSSH2_PUBLICKEY_SUCCESS, "success", sizeof("success") - 1},
{LIBSSH2_PUBLICKEY_ACCESS_DENIED, "access denied",
sizeof("access denied") - 1},
{LIBSSH2_PUBLICKEY_STORAGE_EXCEEDED, "storage exceeded",
sizeof("storage exceeded") - 1},
{LIBSSH2_PUBLICKEY_VERSION_NOT_SUPPORTED, "version not supported",
sizeof("version not supported") - 1},
{LIBSSH2_PUBLICKEY_KEY_NOT_FOUND, "key not found",
sizeof("key not found") - 1},
{LIBSSH2_PUBLICKEY_KEY_NOT_SUPPORTED, "key not supported",
sizeof("key not supported") - 1},
{LIBSSH2_PUBLICKEY_KEY_ALREADY_PRESENT, "key already present",
sizeof("key already present") - 1},
{LIBSSH2_PUBLICKEY_GENERAL_FAILURE, "general failure",
sizeof("general failure") - 1},
{LIBSSH2_PUBLICKEY_REQUEST_NOT_SUPPORTED, "request not supported",
sizeof("request not supported") - 1},
{0, NULL, 0}
};
/*
* publickey_status_error
*
* Format an error message from a status code
*/
static void
publickey_status_error(const LIBSSH2_PUBLICKEY *pkey,
LIBSSH2_SESSION *session, int status)
{
const char *msg;
/* GENERAL_FAILURE got remapped between version 1 and 2 */
if(status == 6 && pkey && pkey->version == 1) {
status = 7;
}
if(status < 0 || status > LIBSSH2_PUBLICKEY_STATUS_CODE_MAX) {
msg = "unknown";
}
else {
msg = publickey_status_codes[status].name;
}
_libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_PROTOCOL, msg);
}
/*
* publickey_packet_receive
*
* Read a packet from the subsystem
*/
static int
publickey_packet_receive(LIBSSH2_PUBLICKEY * pkey,
unsigned char **data, size_t *data_len)
{
LIBSSH2_CHANNEL *channel = pkey->channel;
LIBSSH2_SESSION *session = channel->session;
unsigned char buffer[4];
int rc;
*data = NULL; /* default to nothing returned */
*data_len = 0;
if(pkey->receive_state == libssh2_NB_state_idle) {
rc = _libssh2_channel_read(channel, 0, (char *) buffer, 4);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc != 4) {
return _libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_PROTOCOL,
"Invalid response from publickey subsystem");
}
pkey->receive_packet_len = _libssh2_ntohu32(buffer);
pkey->receive_packet =
LIBSSH2_ALLOC(session, pkey->receive_packet_len);
if(!pkey->receive_packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate publickey response "
"buffer");
}
pkey->receive_state = libssh2_NB_state_sent;
}
if(pkey->receive_state == libssh2_NB_state_sent) {
rc = _libssh2_channel_read(channel, 0, (char *) pkey->receive_packet,
pkey->receive_packet_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc != (int)pkey->receive_packet_len) {
LIBSSH2_FREE(session, pkey->receive_packet);
pkey->receive_packet = NULL;
pkey->receive_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_TIMEOUT,
"Timeout waiting for publickey subsystem "
"response packet");
}
*data = pkey->receive_packet;
*data_len = pkey->receive_packet_len;
}
pkey->receive_state = libssh2_NB_state_idle;
return 0;
}
/* publickey_response_id
*
* Translate a string response name to a numeric code
* Data will be incremented by 4 + response_len on success only
*/
static int
publickey_response_id(unsigned char **pdata, size_t data_len)
{
size_t response_len;
unsigned char *data = *pdata;
const LIBSSH2_PUBLICKEY_CODE_LIST *codes = publickey_response_codes;
if(data_len < 4) {
/* Malformed response */
return -1;
}
response_len = _libssh2_ntohu32(data);
data += 4;
data_len -= 4;
if(data_len < response_len) {
/* Malformed response */
return -1;
}
while(codes->name) {
if((unsigned long)codes->name_len == response_len &&
strncmp(codes->name, (char *) data, response_len) == 0) {
*pdata = data + response_len;
return codes->code;
}
codes++;
}
return -1;
}
/* publickey_response_success
*
* Generic helper routine to wait for success response and nothing else
*/
static int
publickey_response_success(LIBSSH2_PUBLICKEY * pkey)
{
LIBSSH2_SESSION *session = pkey->channel->session;
unsigned char *data, *s;
size_t data_len;
int response;
while(1) {
int rc = publickey_packet_receive(pkey, &data, &data_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_TIMEOUT,
"Timeout waiting for response from "
"publickey subsystem");
}
if(data_len < 4) {
return _libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Publickey response too small");
}
s = data;
response = publickey_response_id(&s, data_len);
switch(response) {
case LIBSSH2_PUBLICKEY_RESPONSE_STATUS:
/* Error, or processing complete */
{
unsigned long status = 0;
if(data_len < 8) {
return _libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Publickey response too small");
}
status = _libssh2_ntohu32(s);
LIBSSH2_FREE(session, data);
if(status == LIBSSH2_PUBLICKEY_SUCCESS)
return 0;
publickey_status_error(pkey, session, status);
return -1;
}
default:
LIBSSH2_FREE(session, data);
if(response < 0) {
return _libssh2_error(session,
LIBSSH2_ERROR_PUBLICKEY_PROTOCOL,
"Invalid publickey subsystem response");
}
/* Unknown/Unexpected */
_libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_PROTOCOL,
"Unexpected publickey subsystem response");
data = NULL;
}
}
/* never reached, but include `return` to silence compiler warnings */
return -1;
}
/* *****************
* Publickey API *
***************** */
/*
* publickey_init
*
* Startup the publickey subsystem
*/
static LIBSSH2_PUBLICKEY *publickey_init(LIBSSH2_SESSION *session)
{
int response;
int rc;
if(session->pkeyInit_state == libssh2_NB_state_idle) {
session->pkeyInit_data = NULL;
session->pkeyInit_pkey = NULL;
session->pkeyInit_channel = NULL;
_libssh2_debug(session, LIBSSH2_TRACE_PUBLICKEY,
"Initializing publickey subsystem");
session->pkeyInit_state = libssh2_NB_state_allocated;
}
if(session->pkeyInit_state == libssh2_NB_state_allocated) {
session->pkeyInit_channel =
_libssh2_channel_open(session, "session",
sizeof("session") - 1,
LIBSSH2_CHANNEL_WINDOW_DEFAULT,
LIBSSH2_CHANNEL_PACKET_DEFAULT, NULL,
0);
if(!session->pkeyInit_channel) {
if(libssh2_session_last_errno(session) == LIBSSH2_ERROR_EAGAIN)
/* The error state is already set, so leave it */
return NULL;
_libssh2_error(session, LIBSSH2_ERROR_CHANNEL_FAILURE,
"Unable to startup channel");
goto err_exit;
}
session->pkeyInit_state = libssh2_NB_state_sent;
}
if(session->pkeyInit_state == libssh2_NB_state_sent) {
rc = _libssh2_channel_process_startup(session->pkeyInit_channel,
"subsystem",
sizeof("subsystem") - 1,
"publickey",
sizeof("publickey") - 1);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block starting publickey subsystem");
return NULL;
}
else if(rc) {
_libssh2_error(session, LIBSSH2_ERROR_CHANNEL_FAILURE,
"Unable to request publickey subsystem");
goto err_exit;
}
session->pkeyInit_state = libssh2_NB_state_sent1;
}
if(session->pkeyInit_state == libssh2_NB_state_sent1) {
unsigned char *s;
rc = _libssh2_channel_extended_data(session->pkeyInit_channel,
LIBSSH2_CHANNEL_EXTENDED_DATA_IGNORE);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block starting publickey subsystem");
return NULL;
}
session->pkeyInit_pkey =
LIBSSH2_CALLOC(session, sizeof(LIBSSH2_PUBLICKEY));
if(!session->pkeyInit_pkey) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate a new publickey structure");
goto err_exit;
}
session->pkeyInit_pkey->channel = session->pkeyInit_channel;
session->pkeyInit_pkey->version = 0;
s = session->pkeyInit_buffer;
_libssh2_htonu32(s, 4 + (sizeof("version") - 1) + 4);
s += 4;
_libssh2_htonu32(s, sizeof("version") - 1);
s += 4;
memcpy(s, "version", sizeof("version") - 1);
s += sizeof("version") - 1;
_libssh2_htonu32(s, LIBSSH2_PUBLICKEY_VERSION);
session->pkeyInit_buffer_sent = 0;
_libssh2_debug(session, LIBSSH2_TRACE_PUBLICKEY,
"Sending publickey advertising version %d support",
(int) LIBSSH2_PUBLICKEY_VERSION);
session->pkeyInit_state = libssh2_NB_state_sent2;
}
if(session->pkeyInit_state == libssh2_NB_state_sent2) {
rc = _libssh2_channel_write(session->pkeyInit_channel, 0,
session->pkeyInit_buffer,
19 - session->pkeyInit_buffer_sent);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block sending publickey version packet");
return NULL;
}
else if(rc < 0) {
_libssh2_error(session, rc,
"Unable to send publickey version packet");
goto err_exit;
}
session->pkeyInit_buffer_sent += rc;
if(session->pkeyInit_buffer_sent < 19) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Need to be called again to complete this");
return NULL;
}
session->pkeyInit_state = libssh2_NB_state_sent3;
}
if(session->pkeyInit_state == libssh2_NB_state_sent3) {
while(1) {
unsigned char *s;
rc = publickey_packet_receive(session->pkeyInit_pkey,
&session->pkeyInit_data,
&session->pkeyInit_data_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block waiting for response from "
"publickey subsystem");
return NULL;
}
else if(rc) {
_libssh2_error(session, LIBSSH2_ERROR_SOCKET_TIMEOUT,
"Timeout waiting for response from "
"publickey subsystem");
goto err_exit;
}
s = session->pkeyInit_data;
if((response =
publickey_response_id(&s, session->pkeyInit_data_len)) < 0) {
_libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_PROTOCOL,
"Invalid publickey subsystem response code");
goto err_exit;
}
if(session->pkeyInit_data_len < 4) {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Public key init data too small");
goto err_exit;
}
switch(response) {
case LIBSSH2_PUBLICKEY_RESPONSE_STATUS:
/* Error */
{
unsigned long status, descr_len, lang_len;
if(session->pkeyInit_data_len >= 8) {
status = _libssh2_ntohu32(s);
s += 4;
descr_len = _libssh2_ntohu32(s);
s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Public key init data too small");
goto err_exit;
}
if(s + descr_len + 4 <=
session->pkeyInit_data + session->pkeyInit_data_len) {
/* description starts here */
s += descr_len;
lang_len = _libssh2_ntohu32(s);
s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Public key init data too small");
goto err_exit;
}
if(s + lang_len <=
session->pkeyInit_data + session->pkeyInit_data_len) {
/* lang starts here */
s += lang_len;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"Public key init data too small");
goto err_exit;
}
if(s >
session->pkeyInit_data + session->pkeyInit_data_len) {
_libssh2_error(session,
LIBSSH2_ERROR_PUBLICKEY_PROTOCOL,
"Malformed publickey subsystem packet");
goto err_exit;
}
publickey_status_error(NULL, session, status);
goto err_exit;
}
case LIBSSH2_PUBLICKEY_RESPONSE_VERSION:
/* What we want */
session->pkeyInit_pkey->version = _libssh2_ntohu32(s);
if(session->pkeyInit_pkey->version >
LIBSSH2_PUBLICKEY_VERSION) {
_libssh2_debug(session, LIBSSH2_TRACE_PUBLICKEY,
"Truncate remote publickey version "
"from %lu",
session->pkeyInit_pkey->version);
session->pkeyInit_pkey->version =
LIBSSH2_PUBLICKEY_VERSION;
}
_libssh2_debug(session, LIBSSH2_TRACE_PUBLICKEY,
"Enabling publickey subsystem version %lu",
session->pkeyInit_pkey->version);
LIBSSH2_FREE(session, session->pkeyInit_data);
session->pkeyInit_data = NULL;
session->pkeyInit_state = libssh2_NB_state_idle;
return session->pkeyInit_pkey;
default:
/* Unknown/Unexpected */
_libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_PROTOCOL,
"Unexpected publickey subsystem response, "
"ignoring");
LIBSSH2_FREE(session, session->pkeyInit_data);
session->pkeyInit_data = NULL;
}
}
}
/* Never reached except by direct goto */
err_exit:
session->pkeyInit_state = libssh2_NB_state_sent4;
if(session->pkeyInit_channel) {
rc = _libssh2_channel_close(session->pkeyInit_channel);
if(rc == LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_EAGAIN,
"Would block closing channel");
return NULL;
}
}
if(session->pkeyInit_pkey) {
LIBSSH2_FREE(session, session->pkeyInit_pkey);
session->pkeyInit_pkey = NULL;
}
if(session->pkeyInit_data) {
LIBSSH2_FREE(session, session->pkeyInit_data);
session->pkeyInit_data = NULL;
}
session->pkeyInit_state = libssh2_NB_state_idle;
return NULL;
}
/*
* libssh2_publickey_init
*
* Startup the publickey subsystem
*/
LIBSSH2_API LIBSSH2_PUBLICKEY *
libssh2_publickey_init(LIBSSH2_SESSION *session)
{
LIBSSH2_PUBLICKEY *ptr;
BLOCK_ADJUST_ERRNO(ptr, session,
publickey_init(session));
return ptr;
}
/*
* libssh2_publickey_add_ex
*
* Add a new public key entry
*/
LIBSSH2_API int
libssh2_publickey_add_ex(LIBSSH2_PUBLICKEY *pkey, const unsigned char *name,
unsigned long name_len, const unsigned char *blob,
unsigned long blob_len, char overwrite,
unsigned long num_attrs,
const libssh2_publickey_attribute attrs[])
{
LIBSSH2_CHANNEL *channel;
LIBSSH2_SESSION *session;
/* 19 = packet_len(4) + add_len(4) + "add"(3) + name_len(4) + {name}
blob_len(4) + {blob} */
unsigned long i, packet_len = 19 + name_len + blob_len;
unsigned char *comment = NULL;
unsigned long comment_len = 0;
int rc;
if(!pkey)
return LIBSSH2_ERROR_BAD_USE;
channel = pkey->channel;
session = channel->session;
if(pkey->add_state == libssh2_NB_state_idle) {
pkey->add_packet = NULL;
_libssh2_debug(session, LIBSSH2_TRACE_PUBLICKEY, "Adding %s publickey",
name);
if(pkey->version == 1) {
for(i = 0; i < num_attrs; i++) {
/* Search for a comment attribute */
if(attrs[i].name_len == (sizeof("comment") - 1) &&
strncmp(attrs[i].name, "comment",
sizeof("comment") - 1) == 0) {
comment = (unsigned char *) attrs[i].value;
comment_len = attrs[i].value_len;
break;
}
}
packet_len += 4 + comment_len;
}
else {
packet_len += 5; /* overwrite(1) + attribute_count(4) */
for(i = 0; i < num_attrs; i++) {
packet_len += 9 + attrs[i].name_len + attrs[i].value_len;
/* name_len(4) + value_len(4) + mandatory(1) */
}
}
pkey->add_packet = LIBSSH2_ALLOC(session, packet_len);
if(!pkey->add_packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"publickey \"add\" packet");
}
pkey->add_s = pkey->add_packet;
_libssh2_htonu32(pkey->add_s, packet_len - 4);
pkey->add_s += 4;
_libssh2_htonu32(pkey->add_s, sizeof("add") - 1);
pkey->add_s += 4;
memcpy(pkey->add_s, "add", sizeof("add") - 1);
pkey->add_s += sizeof("add") - 1;
if(pkey->version == 1) {
_libssh2_htonu32(pkey->add_s, comment_len);
pkey->add_s += 4;
if(comment) {
memcpy(pkey->add_s, comment, comment_len);
pkey->add_s += comment_len;
}
_libssh2_htonu32(pkey->add_s, name_len);
pkey->add_s += 4;
memcpy(pkey->add_s, name, name_len);
pkey->add_s += name_len;
_libssh2_htonu32(pkey->add_s, blob_len);
pkey->add_s += 4;
memcpy(pkey->add_s, blob, blob_len);
pkey->add_s += blob_len;
}
else {
/* Version == 2 */
_libssh2_htonu32(pkey->add_s, name_len);
pkey->add_s += 4;
memcpy(pkey->add_s, name, name_len);
pkey->add_s += name_len;
_libssh2_htonu32(pkey->add_s, blob_len);
pkey->add_s += 4;
memcpy(pkey->add_s, blob, blob_len);
pkey->add_s += blob_len;
*(pkey->add_s++) = overwrite ? 0x01 : 0;
_libssh2_htonu32(pkey->add_s, num_attrs);
pkey->add_s += 4;
for(i = 0; i < num_attrs; i++) {
_libssh2_htonu32(pkey->add_s, attrs[i].name_len);
pkey->add_s += 4;
memcpy(pkey->add_s, attrs[i].name, attrs[i].name_len);
pkey->add_s += attrs[i].name_len;
_libssh2_htonu32(pkey->add_s, attrs[i].value_len);
pkey->add_s += 4;
memcpy(pkey->add_s, attrs[i].value, attrs[i].value_len);
pkey->add_s += attrs[i].value_len;
*(pkey->add_s++) = attrs[i].mandatory ? 0x01 : 0;
}
}
_libssh2_debug(session, LIBSSH2_TRACE_PUBLICKEY,
"Sending publickey \"add\" packet: "
"type=%s blob_len=%ld num_attrs=%ld",
name, blob_len, num_attrs);
pkey->add_state = libssh2_NB_state_created;
}
if(pkey->add_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, pkey->add_packet,
(pkey->add_s - pkey->add_packet));
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if((pkey->add_s - pkey->add_packet) != rc) {
LIBSSH2_FREE(session, pkey->add_packet);
pkey->add_packet = NULL;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send publickey add packet");
}
LIBSSH2_FREE(session, pkey->add_packet);
pkey->add_packet = NULL;
pkey->add_state = libssh2_NB_state_sent;
}
rc = publickey_response_success(pkey);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
pkey->add_state = libssh2_NB_state_idle;
return rc;
}
/* libssh2_publickey_remove_ex
* Remove an existing publickey so that authentication can no longer be
* performed using it
*/
LIBSSH2_API int
libssh2_publickey_remove_ex(LIBSSH2_PUBLICKEY * pkey,
const unsigned char *name, unsigned long name_len,
const unsigned char *blob, unsigned long blob_len)
{
LIBSSH2_CHANNEL *channel;
LIBSSH2_SESSION *session;
/* 22 = packet_len(4) + remove_len(4) + "remove"(6) + name_len(4) + {name}
+ blob_len(4) + {blob} */
unsigned long packet_len = 22 + name_len + blob_len;
int rc;
if(!pkey)
return LIBSSH2_ERROR_BAD_USE;
channel = pkey->channel;
session = channel->session;
if(pkey->remove_state == libssh2_NB_state_idle) {
pkey->remove_packet = NULL;
pkey->remove_packet = LIBSSH2_ALLOC(session, packet_len);
if(!pkey->remove_packet) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"publickey \"remove\" packet");
}
pkey->remove_s = pkey->remove_packet;
_libssh2_htonu32(pkey->remove_s, packet_len - 4);
pkey->remove_s += 4;
_libssh2_htonu32(pkey->remove_s, sizeof("remove") - 1);
pkey->remove_s += 4;
memcpy(pkey->remove_s, "remove", sizeof("remove") - 1);
pkey->remove_s += sizeof("remove") - 1;
_libssh2_htonu32(pkey->remove_s, name_len);
pkey->remove_s += 4;
memcpy(pkey->remove_s, name, name_len);
pkey->remove_s += name_len;
_libssh2_htonu32(pkey->remove_s, blob_len);
pkey->remove_s += 4;
memcpy(pkey->remove_s, blob, blob_len);
pkey->remove_s += blob_len;
_libssh2_debug(session, LIBSSH2_TRACE_PUBLICKEY,
"Sending publickey \"remove\" packet: "
"type=%s blob_len=%ld",
name, blob_len);
pkey->remove_state = libssh2_NB_state_created;
}
if(pkey->remove_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0, pkey->remove_packet,
(pkey->remove_s - pkey->remove_packet));
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if((pkey->remove_s - pkey->remove_packet) != rc) {
LIBSSH2_FREE(session, pkey->remove_packet);
pkey->remove_packet = NULL;
pkey->remove_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send publickey remove packet");
}
LIBSSH2_FREE(session, pkey->remove_packet);
pkey->remove_packet = NULL;
pkey->remove_state = libssh2_NB_state_sent;
}
rc = publickey_response_success(pkey);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
pkey->remove_state = libssh2_NB_state_idle;
return rc;
}
/* libssh2_publickey_list_fetch
* Fetch a list of supported public key from a server
*/
LIBSSH2_API int
libssh2_publickey_list_fetch(LIBSSH2_PUBLICKEY * pkey, unsigned long *num_keys,
libssh2_publickey_list ** pkey_list)
{
LIBSSH2_CHANNEL *channel;
LIBSSH2_SESSION *session;
libssh2_publickey_list *list = NULL;
unsigned long buffer_len = 12, keys = 0, max_keys = 0, i;
/* 12 = packet_len(4) + list_len(4) + "list"(4) */
int response;
int rc;
if(!pkey)
return LIBSSH2_ERROR_BAD_USE;
channel = pkey->channel;
session = channel->session;
if(pkey->listFetch_state == libssh2_NB_state_idle) {
pkey->listFetch_data = NULL;
pkey->listFetch_s = pkey->listFetch_buffer;
_libssh2_htonu32(pkey->listFetch_s, buffer_len - 4);
pkey->listFetch_s += 4;
_libssh2_htonu32(pkey->listFetch_s, sizeof("list") - 1);
pkey->listFetch_s += 4;
memcpy(pkey->listFetch_s, "list", sizeof("list") - 1);
pkey->listFetch_s += sizeof("list") - 1;
_libssh2_debug(session, LIBSSH2_TRACE_PUBLICKEY,
"Sending publickey \"list\" packet");
pkey->listFetch_state = libssh2_NB_state_created;
}
if(pkey->listFetch_state == libssh2_NB_state_created) {
rc = _libssh2_channel_write(channel, 0,
pkey->listFetch_buffer,
(pkey->listFetch_s -
pkey->listFetch_buffer));
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if((pkey->listFetch_s - pkey->listFetch_buffer) != rc) {
pkey->listFetch_state = libssh2_NB_state_idle;
return _libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send publickey list packet");
}
pkey->listFetch_state = libssh2_NB_state_sent;
}
while(1) {
rc = publickey_packet_receive(pkey, &pkey->listFetch_data,
&pkey->listFetch_data_len);
if(rc == LIBSSH2_ERROR_EAGAIN) {
return rc;
}
else if(rc) {
_libssh2_error(session, LIBSSH2_ERROR_SOCKET_TIMEOUT,
"Timeout waiting for response from "
"publickey subsystem");
goto err_exit;
}
pkey->listFetch_s = pkey->listFetch_data;
if((response =
publickey_response_id(&pkey->listFetch_s,
pkey->listFetch_data_len)) < 0) {
_libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_PROTOCOL,
"Invalid publickey subsystem response code");
goto err_exit;
}
switch(response) {
case LIBSSH2_PUBLICKEY_RESPONSE_STATUS:
/* Error, or processing complete */
{
unsigned long status, descr_len, lang_len;
if(pkey->listFetch_s + 8 <=
pkey->listFetch_data + pkey->listFetch_data_len) {
status = _libssh2_ntohu32(pkey->listFetch_s);
pkey->listFetch_s += 4;
descr_len = _libssh2_ntohu32(pkey->listFetch_s);
pkey->listFetch_s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s + descr_len + 4 <=
pkey->listFetch_data + pkey->listFetch_data_len) {
/* description starts at pkey->listFetch_s */
pkey->listFetch_s += descr_len;
lang_len = _libssh2_ntohu32(pkey->listFetch_s);
pkey->listFetch_s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s + lang_len <=
pkey->listFetch_data + pkey->listFetch_data_len) {
/* lang starts at pkey->listFetch_s */
pkey->listFetch_s += lang_len;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s >
pkey->listFetch_data + pkey->listFetch_data_len) {
_libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_PROTOCOL,
"Malformed publickey subsystem packet");
goto err_exit;
}
if(status == LIBSSH2_PUBLICKEY_SUCCESS) {
LIBSSH2_FREE(session, pkey->listFetch_data);
pkey->listFetch_data = NULL;
*pkey_list = list;
*num_keys = keys;
pkey->listFetch_state = libssh2_NB_state_idle;
return 0;
}
publickey_status_error(pkey, session, status);
goto err_exit;
}
case LIBSSH2_PUBLICKEY_RESPONSE_PUBLICKEY:
/* What we want */
if(keys >= max_keys) {
libssh2_publickey_list *newlist;
/* Grow the key list if necessary */
max_keys += 8;
newlist =
LIBSSH2_REALLOC(session, list,
(max_keys +
1) * sizeof(libssh2_publickey_list));
if(!newlist) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"publickey list");
goto err_exit;
}
list = newlist;
}
if(pkey->version == 1) {
unsigned long comment_len;
if(pkey->listFetch_s + 4 <=
pkey->listFetch_data + pkey->listFetch_data_len) {
comment_len = _libssh2_ntohu32(pkey->listFetch_s);
pkey->listFetch_s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(comment_len) {
list[keys].num_attrs = 1;
list[keys].attrs =
LIBSSH2_ALLOC(session,
sizeof(libssh2_publickey_attribute));
if(!list[keys].attrs) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"publickey attributes");
goto err_exit;
}
list[keys].attrs[0].name = "comment";
list[keys].attrs[0].name_len = sizeof("comment") - 1;
list[keys].attrs[0].value = (char *) pkey->listFetch_s;
list[keys].attrs[0].value_len = comment_len;
list[keys].attrs[0].mandatory = 0;
pkey->listFetch_s += comment_len;
}
else {
list[keys].num_attrs = 0;
list[keys].attrs = NULL;
}
if(pkey->listFetch_s + 4 <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].name_len = _libssh2_ntohu32(pkey->listFetch_s);
pkey->listFetch_s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s + list[keys].name_len <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].name = pkey->listFetch_s;
pkey->listFetch_s += list[keys].name_len;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s + 4 <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].blob_len = _libssh2_ntohu32(pkey->listFetch_s);
pkey->listFetch_s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s + list[keys].blob_len <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].blob = pkey->listFetch_s;
pkey->listFetch_s += list[keys].blob_len;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
}
else {
/* Version == 2 */
if(pkey->listFetch_s + 4 <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].name_len = _libssh2_ntohu32(pkey->listFetch_s);
pkey->listFetch_s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s + list[keys].name_len <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].name = pkey->listFetch_s;
pkey->listFetch_s += list[keys].name_len;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s + 4 <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].blob_len = _libssh2_ntohu32(pkey->listFetch_s);
pkey->listFetch_s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s + list[keys].blob_len <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].blob = pkey->listFetch_s;
pkey->listFetch_s += list[keys].blob_len;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s + 4 <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].num_attrs = _libssh2_ntohu32(pkey->listFetch_s);
pkey->listFetch_s += 4;
}
else {
_libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(list[keys].num_attrs) {
list[keys].attrs =
LIBSSH2_ALLOC(session,
list[keys].num_attrs *
sizeof(libssh2_publickey_attribute));
if(!list[keys].attrs) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"publickey attributes");
goto err_exit;
}
for(i = 0; i < list[keys].num_attrs; i++) {
if(pkey->listFetch_s + 4 <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].attrs[i].name_len =
_libssh2_ntohu32(pkey->listFetch_s);
pkey->listFetch_s += 4;
}
else {
_libssh2_error(session,
LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s + list[keys].attrs[i].name_len <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].attrs[i].name =
(char *) pkey->listFetch_s;
pkey->listFetch_s += list[keys].attrs[i].name_len;
}
else {
_libssh2_error(session,
LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s + 4 <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].attrs[i].value_len =
_libssh2_ntohu32(pkey->listFetch_s);
pkey->listFetch_s += 4;
}
else {
_libssh2_error(session,
LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
if(pkey->listFetch_s +
list[keys].attrs[i].value_len <=
pkey->listFetch_data + pkey->listFetch_data_len) {
list[keys].attrs[i].value =
(char *) pkey->listFetch_s;
pkey->listFetch_s += list[keys].attrs[i].value_len;
}
else {
_libssh2_error(session,
LIBSSH2_ERROR_BUFFER_TOO_SMALL,
"ListFetch data too short");
goto err_exit;
}
/* actually an ignored value */
list[keys].attrs[i].mandatory = 0;
}
}
else {
list[keys].attrs = NULL;
}
}
/* To be FREEd in libssh2_publickey_list_free() */
list[keys].packet = pkey->listFetch_data;
keys++;
list[keys].packet = NULL; /* Terminate the list */
pkey->listFetch_data = NULL;
break;
default:
/* Unknown/Unexpected */
_libssh2_error(session, LIBSSH2_ERROR_PUBLICKEY_PROTOCOL,
"Unexpected publickey subsystem response");
LIBSSH2_FREE(session, pkey->listFetch_data);
pkey->listFetch_data = NULL;
}
}
/* Only reached via explicit goto */
err_exit:
if(pkey->listFetch_data) {
LIBSSH2_FREE(session, pkey->listFetch_data);
pkey->listFetch_data = NULL;
}
if(list) {
libssh2_publickey_list_free(pkey, list);
}
pkey->listFetch_state = libssh2_NB_state_idle;
return -1;
}
/* libssh2_publickey_list_free
* Free a previously fetched list of public keys
*/
LIBSSH2_API void
libssh2_publickey_list_free(LIBSSH2_PUBLICKEY * pkey,
libssh2_publickey_list * pkey_list)
{
LIBSSH2_SESSION *session;
libssh2_publickey_list *p = pkey_list;
if(!pkey || !p)
return;
session = pkey->channel->session;
while(p->packet) {
if(p->attrs) {
LIBSSH2_FREE(session, p->attrs);
}
LIBSSH2_FREE(session, p->packet);
p++;
}
LIBSSH2_FREE(session, pkey_list);
}
/* libssh2_publickey_shutdown
* Shutdown the publickey subsystem
*/
LIBSSH2_API int
libssh2_publickey_shutdown(LIBSSH2_PUBLICKEY *pkey)
{
LIBSSH2_SESSION *session;
int rc;
if(!pkey)
return LIBSSH2_ERROR_BAD_USE;
session = pkey->channel->session;
/*
* Make sure all memory used in the state variables are free
*/
if(pkey->receive_packet) {
LIBSSH2_FREE(session, pkey->receive_packet);
pkey->receive_packet = NULL;
}
if(pkey->add_packet) {
LIBSSH2_FREE(session, pkey->add_packet);
pkey->add_packet = NULL;
}
if(pkey->remove_packet) {
LIBSSH2_FREE(session, pkey->remove_packet);
pkey->remove_packet = NULL;
}
if(pkey->listFetch_data) {
LIBSSH2_FREE(session, pkey->listFetch_data);
pkey->listFetch_data = NULL;
}
rc = _libssh2_channel_free(pkey->channel);
if(rc == LIBSSH2_ERROR_EAGAIN)
return rc;
LIBSSH2_FREE(session, pkey);
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/CMakeLists.txt | # Copyright (c) 2014 Alexander Lamaison <[email protected]>
#
# Redistribution and use in source and binary forms,
# with or without modification, are permitted provided
# that the following conditions are met:
#
# Redistributions of source code must retain the above
# copyright notice, this list of conditions and the
# following disclaimer.
#
# Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials
# provided with the distribution.
#
# Neither the name of the copyright holder nor the names
# of any other contributors may be used to endorse or
# promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
# CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
# OF SUCH DAMAGE.
include(CheckFunctionExists)
include(CheckSymbolExists)
include(CheckFunctionExistsMayNeedLibrary)
include(CheckIncludeFiles)
include(CheckTypeSize)
include(CheckSymbolExists)
include(CheckNonblockingSocketSupport)
include(SocketLibraries)
## Cryptography backend choice
set(CRYPTO_BACKEND
""
CACHE
STRING
"The backend to use for cryptography: OpenSSL, Libgcrypt or WinCNG, mbedTLS
or empty to try any available")
# If the crypto backend was given, rather than searching for the first
# we are able to find, the find_package commands must abort configuration
# and report to the user.
if(CRYPTO_BACKEND)
set(SPECIFIC_CRYPTO_REQUIREMENT REQUIRED)
endif()
if(CRYPTO_BACKEND STREQUAL "OpenSSL" OR NOT CRYPTO_BACKEND)
find_package(OpenSSL ${SPECIFIC_CRYPTO_REQUIREMENT})
if(OPENSSL_FOUND)
set(CRYPTO_BACKEND "OpenSSL")
set(CRYPTO_SOURCES openssl.c openssl.h)
list(APPEND PRIVATE_COMPILE_DEFINITIONS LIBSSH2_OPENSSL)
list(APPEND PRIVATE_INCLUDE_DIRECTORIES ${OPENSSL_INCLUDE_DIR})
list(APPEND LIBRARIES ${OPENSSL_LIBRARIES})
list(APPEND PC_REQUIRES_PRIVATE libssl libcrypto)
if (WIN32)
# Statically linking to OpenSSL requires crypt32 for some Windows APIs.
# This should really be handled by FindOpenSSL.cmake.
list(APPEND LIBRARIES crypt32)
list(APPEND PC_LIBS -lcrypt32)
find_file(DLL_LIBEAY32
NAMES libeay32.dll crypto.dll libcrypto-1_1.dll libcrypto-1_1-x64.dll
HINTS ${_OPENSSL_ROOT_HINTS} PATHS ${_OPENSSL_ROOT_PATHS}
PATH_SUFFIXES bin)
if (NOT DLL_LIBEAY32)
message(WARNING
"Unable to find OpenSSL crypto (aka libeay32) DLL, executables may not run")
endif()
find_file(DLL_SSLEAY32
NAMES ssleay32.dll ssl.dll libssl-1_1.dll libssl-1_1-x64.dll
HINTS ${_OPENSSL_ROOT_HINTS} PATHS ${_OPENSSL_ROOT_PATHS}
PATH_SUFFIXES bin)
if (NOT DLL_SSLEAY32)
message(WARNING
"Unable to find OpenSSL ssl (aka ssleay32) DLL, executables may not run")
endif()
if(DLL_LIBEAY32 AND DLL_SSLEAY32)
list(APPEND _RUNTIME_DEPENDENCIES ${DLL_LIBEAY32} ${DLL_SSLEAY32})
endif()
endif()
# Not all OpenSSL have AES-CTR functions.
set(SAVE_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
set(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_LIBRARIES})
check_function_exists(EVP_aes_128_ctr HAVE_EVP_AES_128_CTR)
set(CMAKE_REQUIRED_LIBRARIES ${SAVE_CMAKE_REQUIRED_LIBRARIES})
endif()
endif()
if(CRYPTO_BACKEND STREQUAL "Libgcrypt" OR NOT CRYPTO_BACKEND)
find_package(Libgcrypt ${SPECIFIC_CRYPTO_REQUIREMENT})
if(LIBGCRYPT_FOUND)
set(CRYPTO_BACKEND "Libgcrypt")
set(CRYPTO_SOURCES libgcrypt.c libgcrypt.h)
list(APPEND PRIVATE_COMPILE_DEFINITIONS LIBSSH2_LIBGCRYPT)
list(APPEND PRIVATE_INCLUDE_DIRECTORIES ${LIBGCRYPT_INCLUDE_DIRS})
list(APPEND LIBRARIES ${LIBGCRYPT_LIBRARIES})
list(APPEND PC_LIBS -lgcrypt)
endif()
endif()
if(CRYPTO_BACKEND STREQUAL "WinCNG" OR NOT CRYPTO_BACKEND)
# The check actually compiles the header. This requires windows.h.
check_include_files("windows.h;bcrypt.h" HAVE_BCRYPT_H)
if(HAVE_BCRYPT_H)
set(CRYPTO_BACKEND "WinCNG")
set(CRYPTO_SOURCES wincng.c wincng.h)
list(APPEND PRIVATE_COMPILE_DEFINITIONS LIBSSH2_WINCNG)
set(HAVE_LIBCRYPT32 TRUE)
list(APPEND LIBRARIES bcrypt)
list(APPEND PC_LIBS -lbcrypt)
check_include_files(ntdef.h HAVE_NTDEF_H)
check_include_files(ntstatus.h HAVE_NTSTATUS_H)
# Reading keys from files is optional and depends on Wincrypt
check_include_files("windows.h;wincrypt.h" HAVE_WINCRYPT_H)
if(HAVE_WINCRYPT_H)
list(APPEND LIBRARIES crypt32)
list(APPEND PC_LIBS -lcrypt32)
endif()
elseif(${SPECIFIC_CRYPTO_REQUIREMENT} STREQUAL ${REQUIRED})
message(FATAL_ERROR "WinCNG not available")
endif()
endif()
if(CRYPTO_BACKEND STREQUAL "mbedTLS" OR NOT CRYPTO_BACKEND)
find_package(mbedTLS ${SPECIFIC_CRYPTO_REQUIREMENT})
if(MBEDTLS_FOUND)
set(CRYPTO_BACKEND "mbedTLS")
set(CRYPTO_SOURCES mbedtls.c mbedtls.h)
list(APPEND PRIVATE_COMPILE_DEFINITIONS LIBSSH2_MBEDTLS)
list(APPEND PRIVATE_INCLUDE_DIRECTORIES ${MBEDTLS_INCLUDE_DIR})
list(APPEND LIBRARIES ${MBEDTLS_LIBRARIES})
list(APPEND PC_LIBS -lmbedcrypto)
link_directories(${MBEDTLS_LIBRARY_DIR})
endif()
endif()
if(NOT CRYPTO_BACKEND)
message(FATAL_ERROR "No suitable cryptography backend found.")
endif()
## Library definition
include(GNUInstallDirs)
set(SOURCES
${CRYPTO_SOURCES}
agent.c
agent_win.c
blf.h
bcrypt_pbkdf.c
blowfish.c
channel.c
channel.h
comp.c
comp.h
crypt.c
crypto.h
global.c
hostkey.c
keepalive.c
kex.c
knownhost.c
libssh2_priv.h
mac.c
mac.h
misc.c
misc.h
packet.c
packet.h
pem.c
publickey.c
scp.c
session.c
session.h
sftp.c
sftp.h
transport.c
transport.h
userauth.c
userauth.h
version.c)
if(WIN32)
list(APPEND SOURCES ${PROJECT_SOURCE_DIR}/win32/libssh2.rc)
endif()
add_library(libssh2 ${SOURCES})
# we want it to be called libssh2 on all platforms
set_target_properties(libssh2 PROPERTIES PREFIX "")
target_compile_definitions(libssh2 PRIVATE ${PRIVATE_COMPILE_DEFINITIONS})
target_include_directories(libssh2
PRIVATE "${PROJECT_SOURCE_DIR}/include/" ${PRIVATE_INCLUDE_DIRECTORIES}
PUBLIC
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}>)
## Options
option(CLEAR_MEMORY "Enable clearing of memory before being freed" ON)
if(CLEAR_MEMORY)
add_definitions(-DLIBSSH2_CLEAR_MEMORY)
endif(CLEAR_MEMORY)
add_feature_info("Shared library" BUILD_SHARED_LIBS
"creating libssh2 as a shared library (.so/.dll)")
option(ENABLE_ZLIB_COMPRESSION "Use zlib for compression")
add_feature_info(Compression ENABLE_ZLIB_COMPRESSION
"using zlib for compression")
if(ENABLE_ZLIB_COMPRESSION)
find_package(ZLIB REQUIRED)
target_include_directories(libssh2 PRIVATE ${ZLIB_INCLUDE_DIRS})
list(APPEND LIBRARIES ${ZLIB_LIBRARIES})
list(APPEND PC_REQUIRES_PRIVATE zlib)
if(ZLIB_FOUND)
target_compile_definitions(libssh2 PRIVATE LIBSSH2_HAVE_ZLIB=1)
endif()
endif()
option(ENABLE_CRYPT_NONE "Permit \"none\" cipher -- NOT RECOMMENDED")
add_feature_info("\"none\" cipher" ENABLE_CRYPT_NONE "")
if(ENABLE_CRYPT_NONE)
target_compile_definitions(libssh2 PRIVATE LIBSSH2_CRYPT_NONE=1)
endif()
option(ENABLE_MAC_NONE "Permit \"none\" MAC -- NOT RECOMMMENDED")
add_feature_info("\"none\" MAC" ENABLE_MAC_NONE "")
if(ENABLE_MAC_NONE)
target_compile_definitions(libssh2 PRIVATE LIBSSH2_MAC_NONE=1)
endif()
option(ENABLE_GEX_NEW
"Enable diffie-hellman-group-exchange-sha1 method" ON)
add_feature_info("diffie-hellman-group-exchange-sha1" ENABLE_GEX_NEW
"\"new\" diffie-hellman-group-exchange-sha1 method")
if(ENABLE_GEX_NEW)
target_compile_definitions(libssh2 PRIVATE LIBSSH2_DH_GEX_NEW=1)
endif()
# Enable debugging logging by default if the user configured a debug build
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
set(DEBUG_LOGGING_DEFAULT ON)
else()
set(DEBUG_LOGGING_DEFAULT OFF)
endif()
option(ENABLE_DEBUG_LOGGING "log execution with debug trace"
${DEBUG_LOGGING_DEFAULT})
add_feature_info(Logging ENABLE_DEBUG_LOGGING
"Logging of execution with debug trace")
if(ENABLE_DEBUG_LOGGING)
target_compile_definitions(libssh2 PRIVATE LIBSSH2DEBUG)
endif()
## Platform checks
check_include_files(unistd.h HAVE_UNISTD_H)
check_include_files(inttypes.h HAVE_INTTYPES_H)
check_include_files(stdlib.h HAVE_STDLIB_H)
check_include_files(sys/select.h HAVE_SYS_SELECT_H)
check_include_files(sys/uio.h HAVE_SYS_UIO_H)
check_include_files(sys/socket.h HAVE_SYS_SOCKET_H)
check_include_files(sys/ioctl.h HAVE_SYS_IOCTL_H)
check_include_files(sys/time.h HAVE_SYS_TIME_H)
check_include_files(sys/un.h HAVE_SYS_UN_H)
check_include_files(windows.h HAVE_WINDOWS_H)
check_include_files(ws2tcpip.h HAVE_WS2TCPIP_H)
check_include_files(winsock2.h HAVE_WINSOCK2_H)
check_type_size("long long" LONGLONG)
if(HAVE_SYS_TIME_H)
check_symbol_exists(gettimeofday sys/time.h HAVE_GETTIMEOFDAY)
else()
check_function_exists(gettimeofday HAVE_GETTIMEOFDAY)
endif()
if(HAVE_STDLIB_H)
check_symbol_exists(strtoll stdlib.h HAVE_STRTOLL)
else()
check_function_exists(strtoll HAVE_STRTOLL)
endif()
if (NOT HAVE_STRTOLL)
# Try _strtoi64 if strtoll isn't available
check_symbol_exists(_strtoi64 stdlib.h HAVE_STRTOI64)
endif()
check_symbol_exists(snprintf stdio.h HAVE_SNPRINTF)
check_symbol_exists(memset_s string.h HAVE_MEMSET_S)
if(${CMAKE_SYSTEM_NAME} STREQUAL "Darwin" OR
${CMAKE_SYSTEM_NAME} STREQUAL "Interix")
# poll() does not work on these platforms
#
# Interix: "does provide poll(), but the implementing developer must
# have been in a bad mood, because poll() only works on the /proc
# filesystem here"
#
# Mac OS X's poll has funny behaviors, like:
# not being able to do poll on no filedescriptors (10.3?)
# not being able to poll on some files (like anything in /dev)
# not having reliable timeout support
# inconsistent return of POLLHUP where other implementations give POLLIN
message("poll use is disabled on this platform")
else()
check_function_exists(poll HAVE_POLL)
endif()
append_needed_socket_libraries(LIBRARIES)
# Non-blocking socket support tests. Must be after library tests to
# link correctly
set(SAVE_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
set(CMAKE_REQUIRED_LIBRARIES ${LIBRARIES})
check_nonblocking_socket_support()
set(CMAKE_REQUIRED_LIBRARIES ${SAVE_CMAKE_REQUIRED_LIBRARIES})
configure_file(
${CMAKE_CURRENT_SOURCE_DIR}/libssh2_config_cmake.h.in
${CMAKE_CURRENT_BINARY_DIR}/libssh2_config.h)
# to find generated header
target_include_directories(libssh2 PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
# Check for the OS.
# Daniel's note: this should not be necessary and we need to work to
# get this removed.
if(${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
target_compile_definitions(libssh2 PRIVATE LIBSSH2_WIN32)
elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
target_compile_definitions(libssh2 PRIVATE LIBSSH2_DARWIN)
endif()
if(MSVC)
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /Zi /Od")
set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG} /DEBUG")
endif()
if(CMAKE_VERSION VERSION_LESS "2.8.12")
# Fall back to over-linking dependencies
target_link_libraries(libssh2 ${LIBRARIES})
else()
target_link_libraries(libssh2 PRIVATE ${LIBRARIES})
endif()
## Installation
install(FILES
${PROJECT_SOURCE_DIR}/include/libssh2.h
${PROJECT_SOURCE_DIR}/include/libssh2_publickey.h
${PROJECT_SOURCE_DIR}/include/libssh2_sftp.h
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
install(TARGETS libssh2
EXPORT Libssh2Config
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
if(BUILD_SHARED_LIBS)
list(APPEND _RUNTIME_DEPENDENCIES $<TARGET_FILE:libssh2>)
endif()
set(RUNTIME_DEPENDENCIES ${_RUNTIME_DEPENDENCIES} CACHE INTERNAL
"Files that must be in the same directory as the executables at runtime.")
# Package config
## During package installation, install Libssh2Config.cmake
install(EXPORT Libssh2Config
NAMESPACE Libssh2::
DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/libssh2)
## During build, register directly from build tree
# create Libssh2Config.cmake
export(TARGETS libssh2 NAMESPACE Libssh2:: FILE Libssh2Config.cmake)
export(PACKAGE Libssh2) # register it
## Export a .pc file for client projects not using CMaek
if(PC_REQUIRES_PRIVATE)
string(REPLACE ";" "," PC_REQUIRES_PRIVATE "${PC_REQUIRES_PRIVATE}")
endif()
if(PC_LIBS)
string(REPLACE ";" " " PC_LIBS "${PC_LIBS}")
endif()
configure_file(libssh2.pc.in libssh2.pc @ONLY)
install(
FILES ${CMAKE_CURRENT_BINARY_DIR}/libssh2.pc
DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
## Versioning
set_target_properties(libssh2 PROPERTIES
SOVERSION 1
VERSION 1.0.1)
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
${CMAKE_CURRENT_BINARY_DIR}/Libssh2ConfigVersion.cmake
VERSION "${LIBSSH2_VERSION_MAJOR}.${LIBSSH2_VERSION_MINOR}.${LIBSSH2_VERSION_PATCH}"
COMPATIBILITY SameMajorVersion)
install(
FILES ${CMAKE_CURRENT_BINARY_DIR}/Libssh2ConfigVersion.cmake
DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/libssh2)
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/libssh2.pc.in | ###########################################################################
# libssh2 installation details
###########################################################################
prefix=@CMAKE_INSTALL_PREFIX@
exec_prefix=${prefix}
libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
Name: @PROJECT_NAME@
URL: @PROJECT_URL@
Description: @PROJECT_DESCRIPTION@
Version: @LIBSSH2_VERSION@
Requires.private: @PC_REQUIRES_PRIVATE@
Libs: -L${libdir} -lssh2 @PC_LIBS@
Libs.private: @PC_LIBS@
Cflags: -I${includedir} |
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/openssl.c | /* Copyright (C) 2009, 2010 Simon Josefsson
* Copyright (C) 2006, 2007 The Written Word, Inc. All rights reserved.
* Copyright (c) 2004-2006, Sara Golemon <[email protected]>
*
* Author: Simon Josefsson
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#ifdef LIBSSH2_OPENSSL /* compile only if we build with openssl */
#include <string.h>
#include "misc.h"
#ifndef EVP_MAX_BLOCK_LENGTH
#define EVP_MAX_BLOCK_LENGTH 32
#endif
int
read_openssh_private_key_from_memory(void **key_ctx, LIBSSH2_SESSION *session,
const char *key_type,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
static unsigned char *
write_bn(unsigned char *buf, const BIGNUM *bn, int bn_bytes)
{
unsigned char *p = buf;
/* Left space for bn size which will be written below. */
p += 4;
*p = 0;
BN_bn2bin(bn, p + 1);
if(!(*(p + 1) & 0x80)) {
memmove(p, p + 1, --bn_bytes);
}
_libssh2_htonu32(p - 4, bn_bytes); /* Post write bn size. */
return p + bn_bytes;
}
int
_libssh2_rsa_new(libssh2_rsa_ctx ** rsa,
const unsigned char *edata,
unsigned long elen,
const unsigned char *ndata,
unsigned long nlen,
const unsigned char *ddata,
unsigned long dlen,
const unsigned char *pdata,
unsigned long plen,
const unsigned char *qdata,
unsigned long qlen,
const unsigned char *e1data,
unsigned long e1len,
const unsigned char *e2data,
unsigned long e2len,
const unsigned char *coeffdata, unsigned long coefflen)
{
BIGNUM * e;
BIGNUM * n;
BIGNUM * d = 0;
BIGNUM * p = 0;
BIGNUM * q = 0;
BIGNUM * dmp1 = 0;
BIGNUM * dmq1 = 0;
BIGNUM * iqmp = 0;
e = BN_new();
BN_bin2bn(edata, elen, e);
n = BN_new();
BN_bin2bn(ndata, nlen, n);
if(ddata) {
d = BN_new();
BN_bin2bn(ddata, dlen, d);
p = BN_new();
BN_bin2bn(pdata, plen, p);
q = BN_new();
BN_bin2bn(qdata, qlen, q);
dmp1 = BN_new();
BN_bin2bn(e1data, e1len, dmp1);
dmq1 = BN_new();
BN_bin2bn(e2data, e2len, dmq1);
iqmp = BN_new();
BN_bin2bn(coeffdata, coefflen, iqmp);
}
*rsa = RSA_new();
#ifdef HAVE_OPAQUE_STRUCTS
RSA_set0_key(*rsa, n, e, d);
#else
(*rsa)->e = e;
(*rsa)->n = n;
(*rsa)->d = d;
#endif
#ifdef HAVE_OPAQUE_STRUCTS
RSA_set0_factors(*rsa, p, q);
#else
(*rsa)->p = p;
(*rsa)->q = q;
#endif
#ifdef HAVE_OPAQUE_STRUCTS
RSA_set0_crt_params(*rsa, dmp1, dmq1, iqmp);
#else
(*rsa)->dmp1 = dmp1;
(*rsa)->dmq1 = dmq1;
(*rsa)->iqmp = iqmp;
#endif
return 0;
}
int
_libssh2_rsa_sha1_verify(libssh2_rsa_ctx * rsactx,
const unsigned char *sig,
unsigned long sig_len,
const unsigned char *m, unsigned long m_len)
{
unsigned char hash[SHA_DIGEST_LENGTH];
int ret;
if(_libssh2_sha1(m, m_len, hash))
return -1; /* failure */
ret = RSA_verify(NID_sha1, hash, SHA_DIGEST_LENGTH,
(unsigned char *) sig, sig_len, rsactx);
return (ret == 1) ? 0 : -1;
}
#if LIBSSH2_DSA
int
_libssh2_dsa_new(libssh2_dsa_ctx ** dsactx,
const unsigned char *p,
unsigned long p_len,
const unsigned char *q,
unsigned long q_len,
const unsigned char *g,
unsigned long g_len,
const unsigned char *y,
unsigned long y_len,
const unsigned char *x, unsigned long x_len)
{
BIGNUM * p_bn;
BIGNUM * q_bn;
BIGNUM * g_bn;
BIGNUM * pub_key;
BIGNUM * priv_key = NULL;
p_bn = BN_new();
BN_bin2bn(p, p_len, p_bn);
q_bn = BN_new();
BN_bin2bn(q, q_len, q_bn);
g_bn = BN_new();
BN_bin2bn(g, g_len, g_bn);
pub_key = BN_new();
BN_bin2bn(y, y_len, pub_key);
if(x_len) {
priv_key = BN_new();
BN_bin2bn(x, x_len, priv_key);
}
*dsactx = DSA_new();
#ifdef HAVE_OPAQUE_STRUCTS
DSA_set0_pqg(*dsactx, p_bn, q_bn, g_bn);
#else
(*dsactx)->p = p_bn;
(*dsactx)->g = g_bn;
(*dsactx)->q = q_bn;
#endif
#ifdef HAVE_OPAQUE_STRUCTS
DSA_set0_key(*dsactx, pub_key, priv_key);
#else
(*dsactx)->pub_key = pub_key;
(*dsactx)->priv_key = priv_key;
#endif
return 0;
}
int
_libssh2_dsa_sha1_verify(libssh2_dsa_ctx * dsactx,
const unsigned char *sig,
const unsigned char *m, unsigned long m_len)
{
unsigned char hash[SHA_DIGEST_LENGTH];
DSA_SIG * dsasig;
BIGNUM * r;
BIGNUM * s;
int ret = -1;
r = BN_new();
BN_bin2bn(sig, 20, r);
s = BN_new();
BN_bin2bn(sig + 20, 20, s);
dsasig = DSA_SIG_new();
#ifdef HAVE_OPAQUE_STRUCTS
DSA_SIG_set0(dsasig, r, s);
#else
dsasig->r = r;
dsasig->s = s;
#endif
if(!_libssh2_sha1(m, m_len, hash))
/* _libssh2_sha1() succeeded */
ret = DSA_do_verify(hash, SHA_DIGEST_LENGTH, dsasig, dsactx);
DSA_SIG_free(dsasig);
return (ret == 1) ? 0 : -1;
}
#endif /* LIBSSH_DSA */
#if LIBSSH2_ECDSA
/* _libssh2_ecdsa_get_curve_type
*
* returns key curve type that maps to libssh2_curve_type
*
*/
libssh2_curve_type
_libssh2_ecdsa_get_curve_type(libssh2_ecdsa_ctx *ec_ctx)
{
const EC_GROUP *group = EC_KEY_get0_group(ec_ctx);
return EC_GROUP_get_curve_name(group);
}
/* _libssh2_ecdsa_curve_type_from_name
*
* returns 0 for success, key curve type that maps to libssh2_curve_type
*
*/
int
_libssh2_ecdsa_curve_type_from_name(const char *name,
libssh2_curve_type *out_type)
{
int ret = 0;
libssh2_curve_type type;
if(name == NULL || strlen(name) != 19)
return -1;
if(strcmp(name, "ecdsa-sha2-nistp256") == 0)
type = LIBSSH2_EC_CURVE_NISTP256;
else if(strcmp(name, "ecdsa-sha2-nistp384") == 0)
type = LIBSSH2_EC_CURVE_NISTP384;
else if(strcmp(name, "ecdsa-sha2-nistp521") == 0)
type = LIBSSH2_EC_CURVE_NISTP521;
else {
ret = -1;
}
if(ret == 0 && out_type) {
*out_type = type;
}
return ret;
}
/* _libssh2_ecdsa_curve_name_with_octal_new
*
* Creates a new public key given an octal string, length and type
*
*/
int
_libssh2_ecdsa_curve_name_with_octal_new(libssh2_ecdsa_ctx ** ec_ctx,
const unsigned char *k,
size_t k_len, libssh2_curve_type curve)
{
int ret = 0;
const EC_GROUP *ec_group = NULL;
EC_KEY *ec_key = EC_KEY_new_by_curve_name(curve);
EC_POINT *point = NULL;
if(ec_key) {
ec_group = EC_KEY_get0_group(ec_key);
point = EC_POINT_new(ec_group);
ret = EC_POINT_oct2point(ec_group, point, k, k_len, NULL);
ret = EC_KEY_set_public_key(ec_key, point);
if(point != NULL)
EC_POINT_free(point);
if(ec_ctx != NULL)
*ec_ctx = ec_key;
}
return (ret == 1) ? 0 : -1;
}
#define LIBSSH2_ECDSA_VERIFY(digest_type) \
{ \
unsigned char hash[SHA##digest_type##_DIGEST_LENGTH]; \
libssh2_sha##digest_type(m, m_len, hash); \
ret = ECDSA_do_verify(hash, SHA##digest_type##_DIGEST_LENGTH, \
ecdsa_sig, ec_key); \
\
}
int
_libssh2_ecdsa_verify(libssh2_ecdsa_ctx * ctx,
const unsigned char *r, size_t r_len,
const unsigned char *s, size_t s_len,
const unsigned char *m, size_t m_len)
{
int ret = 0;
EC_KEY *ec_key = (EC_KEY*)ctx;
libssh2_curve_type type = _libssh2_ecdsa_get_curve_type(ec_key);
#ifdef HAVE_OPAQUE_STRUCTS
ECDSA_SIG *ecdsa_sig = ECDSA_SIG_new();
BIGNUM *pr = BN_new();
BIGNUM *ps = BN_new();
BN_bin2bn(r, r_len, pr);
BN_bin2bn(s, s_len, ps);
ECDSA_SIG_set0(ecdsa_sig, pr, ps);
#else
ECDSA_SIG ecdsa_sig_;
ECDSA_SIG *ecdsa_sig = &ecdsa_sig_;
ecdsa_sig_.r = BN_new();
BN_bin2bn(r, r_len, ecdsa_sig_.r);
ecdsa_sig_.s = BN_new();
BN_bin2bn(s, s_len, ecdsa_sig_.s);
#endif
if(type == LIBSSH2_EC_CURVE_NISTP256) {
LIBSSH2_ECDSA_VERIFY(256);
}
else if(type == LIBSSH2_EC_CURVE_NISTP384) {
LIBSSH2_ECDSA_VERIFY(384);
}
else if(type == LIBSSH2_EC_CURVE_NISTP521) {
LIBSSH2_ECDSA_VERIFY(512);
}
#ifdef HAVE_OPAQUE_STRUCTS
if(ecdsa_sig)
ECDSA_SIG_free(ecdsa_sig);
#else
BN_clear_free(ecdsa_sig_.s);
BN_clear_free(ecdsa_sig_.r);
#endif
return (ret == 1) ? 0 : -1;
}
#endif /* LIBSSH2_ECDSA */
int
_libssh2_cipher_init(_libssh2_cipher_ctx * h,
_libssh2_cipher_type(algo),
unsigned char *iv, unsigned char *secret, int encrypt)
{
#ifdef HAVE_OPAQUE_STRUCTS
*h = EVP_CIPHER_CTX_new();
return !EVP_CipherInit(*h, algo(), secret, iv, encrypt);
#else
EVP_CIPHER_CTX_init(h);
return !EVP_CipherInit(h, algo(), secret, iv, encrypt);
#endif
}
int
_libssh2_cipher_crypt(_libssh2_cipher_ctx * ctx,
_libssh2_cipher_type(algo),
int encrypt, unsigned char *block, size_t blocksize)
{
unsigned char buf[EVP_MAX_BLOCK_LENGTH];
int ret;
(void) algo;
(void) encrypt;
#ifdef HAVE_OPAQUE_STRUCTS
ret = EVP_Cipher(*ctx, buf, block, blocksize);
#else
ret = EVP_Cipher(ctx, buf, block, blocksize);
#endif
#if defined(OPENSSL_VERSION_MAJOR) && OPENSSL_VERSION_MAJOR >= 3
if(ret != -1) {
#else
if(ret == 1) {
#endif
memcpy(block, buf, blocksize);
}
#if defined(OPENSSL_VERSION_MAJOR) && OPENSSL_VERSION_MAJOR >= 3
return ret != -1 ? 0 : 1;
#else
return ret == 1 ? 0 : 1;
#endif
}
#if LIBSSH2_AES_CTR && !defined(HAVE_EVP_AES_128_CTR)
#include <openssl/aes.h>
#include <openssl/evp.h>
typedef struct
{
AES_KEY key;
EVP_CIPHER_CTX *aes_ctx;
unsigned char ctr[AES_BLOCK_SIZE];
} aes_ctr_ctx;
static EVP_CIPHER * aes_128_ctr_cipher = NULL;
static EVP_CIPHER * aes_192_ctr_cipher = NULL;
static EVP_CIPHER * aes_256_ctr_cipher = NULL;
static int
aes_ctr_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc) /* init key */
{
/*
* variable "c" is leaked from this scope, but is later freed
* in aes_ctr_cleanup
*/
aes_ctr_ctx *c;
const EVP_CIPHER *aes_cipher;
(void) enc;
switch(EVP_CIPHER_CTX_key_length(ctx)) {
case 16:
aes_cipher = EVP_aes_128_ecb();
break;
case 24:
aes_cipher = EVP_aes_192_ecb();
break;
case 32:
aes_cipher = EVP_aes_256_ecb();
break;
default:
return 0;
}
c = malloc(sizeof(*c));
if(c == NULL)
return 0;
#ifdef HAVE_OPAQUE_STRUCTS
c->aes_ctx = EVP_CIPHER_CTX_new();
#else
c->aes_ctx = malloc(sizeof(EVP_CIPHER_CTX));
#endif
if(c->aes_ctx == NULL) {
free(c);
return 0;
}
if(EVP_EncryptInit(c->aes_ctx, aes_cipher, key, NULL) != 1) {
#ifdef HAVE_OPAQUE_STRUCTS
EVP_CIPHER_CTX_free(c->aes_ctx);
#else
free(c->aes_ctx);
#endif
free(c);
return 0;
}
EVP_CIPHER_CTX_set_padding(c->aes_ctx, 0);
memcpy(c->ctr, iv, AES_BLOCK_SIZE);
EVP_CIPHER_CTX_set_app_data(ctx, c);
return 1;
}
static int
aes_ctr_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in,
size_t inl) /* encrypt/decrypt data */
{
aes_ctr_ctx *c = EVP_CIPHER_CTX_get_app_data(ctx);
unsigned char b1[AES_BLOCK_SIZE];
int outlen = 0;
if(inl != 16) /* libssh2 only ever encrypt one block */
return 0;
if(c == NULL) {
return 0;
}
/*
To encrypt a packet P=P1||P2||...||Pn (where P1, P2, ..., Pn are each
blocks of length L), the encryptor first encrypts <X> with <cipher>
to obtain a block B1. The block B1 is then XORed with P1 to generate
the ciphertext block C1. The counter X is then incremented
*/
if(EVP_EncryptUpdate(c->aes_ctx, b1, &outlen,
c->ctr, AES_BLOCK_SIZE) != 1) {
return 0;
}
_libssh2_xor_data(out, in, b1, AES_BLOCK_SIZE);
_libssh2_aes_ctr_increment(c->ctr, AES_BLOCK_SIZE);
return 1;
}
static int
aes_ctr_cleanup(EVP_CIPHER_CTX *ctx) /* cleanup ctx */
{
aes_ctr_ctx *c = EVP_CIPHER_CTX_get_app_data(ctx);
if(c == NULL) {
return 1;
}
if(c->aes_ctx != NULL) {
#ifdef HAVE_OPAQUE_STRUCTS
EVP_CIPHER_CTX_free(c->aes_ctx);
#else
_libssh2_cipher_dtor(c->aes_ctx);
free(c->aes_ctx);
#endif
}
free(c);
return 1;
}
static const EVP_CIPHER *
make_ctr_evp (size_t keylen, EVP_CIPHER **aes_ctr_cipher, int type)
{
#ifdef HAVE_OPAQUE_STRUCTS
*aes_ctr_cipher = EVP_CIPHER_meth_new(type, 16, keylen);
if(*aes_ctr_cipher) {
EVP_CIPHER_meth_set_iv_length(*aes_ctr_cipher, 16);
EVP_CIPHER_meth_set_init(*aes_ctr_cipher, aes_ctr_init);
EVP_CIPHER_meth_set_do_cipher(*aes_ctr_cipher, aes_ctr_do_cipher);
EVP_CIPHER_meth_set_cleanup(*aes_ctr_cipher, aes_ctr_cleanup);
}
#else
(*aes_ctr_cipher)->nid = type;
(*aes_ctr_cipher)->block_size = 16;
(*aes_ctr_cipher)->key_len = keylen;
(*aes_ctr_cipher)->iv_len = 16;
(*aes_ctr_cipher)->init = aes_ctr_init;
(*aes_ctr_cipher)->do_cipher = aes_ctr_do_cipher;
(*aes_ctr_cipher)->cleanup = aes_ctr_cleanup;
#endif
return *aes_ctr_cipher;
}
const EVP_CIPHER *
_libssh2_EVP_aes_128_ctr(void)
{
#ifdef HAVE_OPAQUE_STRUCTS
return !aes_128_ctr_cipher ?
make_ctr_evp(16, &aes_128_ctr_cipher, NID_aes_128_ctr) :
aes_128_ctr_cipher;
#else
static EVP_CIPHER aes_ctr_cipher;
if(!aes_128_ctr_cipher) {
aes_128_ctr_cipher = &aes_ctr_cipher;
make_ctr_evp(16, &aes_128_ctr_cipher, 0);
}
return aes_128_ctr_cipher;
#endif
}
const EVP_CIPHER *
_libssh2_EVP_aes_192_ctr(void)
{
#ifdef HAVE_OPAQUE_STRUCTS
return !aes_192_ctr_cipher ?
make_ctr_evp(24, &aes_192_ctr_cipher, NID_aes_192_ctr) :
aes_192_ctr_cipher;
#else
static EVP_CIPHER aes_ctr_cipher;
if(!aes_192_ctr_cipher) {
aes_192_ctr_cipher = &aes_ctr_cipher;
make_ctr_evp(24, &aes_192_ctr_cipher, 0);
}
return aes_192_ctr_cipher;
#endif
}
const EVP_CIPHER *
_libssh2_EVP_aes_256_ctr(void)
{
#ifdef HAVE_OPAQUE_STRUCTS
return !aes_256_ctr_cipher ?
make_ctr_evp(32, &aes_256_ctr_cipher, NID_aes_256_ctr) :
aes_256_ctr_cipher;
#else
static EVP_CIPHER aes_ctr_cipher;
if(!aes_256_ctr_cipher) {
aes_256_ctr_cipher = &aes_ctr_cipher;
make_ctr_evp(32, &aes_256_ctr_cipher, 0);
}
return aes_256_ctr_cipher;
#endif
}
#endif /* LIBSSH2_AES_CTR && !defined(HAVE_EVP_AES_128_CTR) */
void _libssh2_openssl_crypto_init(void)
{
#if OPENSSL_VERSION_NUMBER >= 0x10100000L && \
!defined(LIBRESSL_VERSION_NUMBER)
#ifndef OPENSSL_NO_ENGINE
ENGINE_load_builtin_engines();
ENGINE_register_all_complete();
#endif
#else
OpenSSL_add_all_algorithms();
OpenSSL_add_all_ciphers();
OpenSSL_add_all_digests();
#ifndef OPENSSL_NO_ENGINE
ENGINE_load_builtin_engines();
ENGINE_register_all_complete();
#endif
#endif
#if LIBSSH2_AES_CTR && !defined(HAVE_EVP_AES_128_CTR)
aes_128_ctr_cipher = (EVP_CIPHER *) _libssh2_EVP_aes_128_ctr();
aes_192_ctr_cipher = (EVP_CIPHER *) _libssh2_EVP_aes_192_ctr();
aes_256_ctr_cipher = (EVP_CIPHER *) _libssh2_EVP_aes_256_ctr();
#endif
}
void _libssh2_openssl_crypto_exit(void)
{
#if LIBSSH2_AES_CTR && !defined(HAVE_EVP_AES_128_CTR)
#ifdef HAVE_OPAQUE_STRUCTS
if(aes_128_ctr_cipher) {
EVP_CIPHER_meth_free(aes_128_ctr_cipher);
}
if(aes_192_ctr_cipher) {
EVP_CIPHER_meth_free(aes_192_ctr_cipher);
}
if(aes_256_ctr_cipher) {
EVP_CIPHER_meth_free(aes_256_ctr_cipher);
}
#endif
aes_128_ctr_cipher = NULL;
aes_192_ctr_cipher = NULL;
aes_256_ctr_cipher = NULL;
#endif
}
/* TODO: Optionally call a passphrase callback specified by the
* calling program
*/
static int
passphrase_cb(char *buf, int size, int rwflag, char *passphrase)
{
int passphrase_len = strlen(passphrase);
(void) rwflag;
if(passphrase_len > (size - 1)) {
passphrase_len = size - 1;
}
memcpy(buf, passphrase, passphrase_len);
buf[passphrase_len] = '\0';
return passphrase_len;
}
typedef void * (*pem_read_bio_func)(BIO *, void **, pem_password_cb *,
void *u);
static int
read_private_key_from_memory(void **key_ctx,
pem_read_bio_func read_private_key,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase)
{
BIO * bp;
*key_ctx = NULL;
bp = BIO_new_mem_buf((char *)filedata, filedata_len);
if(!bp) {
return -1;
}
*key_ctx = read_private_key(bp, NULL, (pem_password_cb *) passphrase_cb,
(void *) passphrase);
BIO_free(bp);
return (*key_ctx) ? 0 : -1;
}
static int
read_private_key_from_file(void **key_ctx,
pem_read_bio_func read_private_key,
const char *filename,
unsigned const char *passphrase)
{
BIO * bp;
*key_ctx = NULL;
bp = BIO_new_file(filename, "r");
if(!bp) {
return -1;
}
*key_ctx = read_private_key(bp, NULL, (pem_password_cb *) passphrase_cb,
(void *) passphrase);
BIO_free(bp);
return (*key_ctx) ? 0 : -1;
}
int
_libssh2_rsa_new_private_frommemory(libssh2_rsa_ctx ** rsa,
LIBSSH2_SESSION * session,
const char *filedata, size_t filedata_len,
unsigned const char *passphrase)
{
int rc;
pem_read_bio_func read_rsa =
(pem_read_bio_func) &PEM_read_bio_RSAPrivateKey;
_libssh2_init_if_needed();
rc = read_private_key_from_memory((void **) rsa, read_rsa,
filedata, filedata_len, passphrase);
if(rc) {
rc = read_openssh_private_key_from_memory((void **)rsa, session,
"ssh-rsa", filedata, filedata_len, passphrase);
}
return rc;
}
static unsigned char *
gen_publickey_from_rsa(LIBSSH2_SESSION *session, RSA *rsa,
size_t *key_len)
{
int e_bytes, n_bytes;
unsigned long len;
unsigned char *key;
unsigned char *p;
const BIGNUM * e;
const BIGNUM * n;
#ifdef HAVE_OPAQUE_STRUCTS
RSA_get0_key(rsa, &n, &e, NULL);
#else
e = rsa->e;
n = rsa->n;
#endif
e_bytes = BN_num_bytes(e) + 1;
n_bytes = BN_num_bytes(n) + 1;
/* Key form is "ssh-rsa" + e + n. */
len = 4 + 7 + 4 + e_bytes + 4 + n_bytes;
key = LIBSSH2_ALLOC(session, len);
if(key == NULL) {
return NULL;
}
/* Process key encoding. */
p = key;
_libssh2_htonu32(p, 7); /* Key type. */
p += 4;
memcpy(p, "ssh-rsa", 7);
p += 7;
p = write_bn(p, e, e_bytes);
p = write_bn(p, n, n_bytes);
*key_len = (size_t)(p - key);
return key;
}
static int
gen_publickey_from_rsa_evp(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
EVP_PKEY *pk)
{
RSA* rsa = NULL;
unsigned char *key;
unsigned char *method_buf = NULL;
size_t key_len;
_libssh2_debug(session,
LIBSSH2_TRACE_AUTH,
"Computing public key from RSA private key envelope");
rsa = EVP_PKEY_get1_RSA(pk);
if(rsa == NULL) {
/* Assume memory allocation error... what else could it be ? */
goto __alloc_error;
}
method_buf = LIBSSH2_ALLOC(session, 7); /* ssh-rsa. */
if(method_buf == NULL) {
goto __alloc_error;
}
key = gen_publickey_from_rsa(session, rsa, &key_len);
if(key == NULL) {
goto __alloc_error;
}
RSA_free(rsa);
memcpy(method_buf, "ssh-rsa", 7);
*method = method_buf;
*method_len = 7;
*pubkeydata = key;
*pubkeydata_len = key_len;
return 0;
__alloc_error:
if(rsa != NULL) {
RSA_free(rsa);
}
if(method_buf != NULL) {
LIBSSH2_FREE(session, method_buf);
}
return _libssh2_error(session,
LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for private key data");
}
static int _libssh2_rsa_new_additional_parameters(RSA *rsa)
{
BN_CTX *ctx = NULL;
BIGNUM *aux = NULL;
BIGNUM *dmp1 = NULL;
BIGNUM *dmq1 = NULL;
const BIGNUM *p = NULL;
const BIGNUM *q = NULL;
const BIGNUM *d = NULL;
int rc = 0;
#ifdef HAVE_OPAQUE_STRUCTS
RSA_get0_key(rsa, NULL, NULL, &d);
RSA_get0_factors(rsa, &p, &q);
#else
d = (*rsa).d;
p = (*rsa).p;
q = (*rsa).q;
#endif
ctx = BN_CTX_new();
if(ctx == NULL)
return -1;
aux = BN_new();
if(aux == NULL) {
rc = -1;
goto out;
}
dmp1 = BN_new();
if(dmp1 == NULL) {
rc = -1;
goto out;
}
dmq1 = BN_new();
if(dmq1 == NULL) {
rc = -1;
goto out;
}
if((BN_sub(aux, q, BN_value_one()) == 0) ||
(BN_mod(dmq1, d, aux, ctx) == 0) ||
(BN_sub(aux, p, BN_value_one()) == 0) ||
(BN_mod(dmp1, d, aux, ctx) == 0)) {
rc = -1;
goto out;
}
#ifdef HAVE_OPAQUE_STRUCTS
RSA_set0_crt_params(rsa, dmp1, dmq1, NULL);
#else
(*rsa).dmp1 = dmp1;
(*rsa).dmq1 = dmq1;
#endif
out:
if(aux)
BN_clear_free(aux);
BN_CTX_free(ctx);
if(rc != 0) {
if(dmp1)
BN_clear_free(dmp1);
if(dmq1)
BN_clear_free(dmq1);
}
return rc;
}
static int
gen_publickey_from_rsa_openssh_priv_data(LIBSSH2_SESSION *session,
struct string_buf *decrypted,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
libssh2_rsa_ctx **rsa_ctx)
{
int rc = 0;
size_t nlen, elen, dlen, plen, qlen, coefflen, commentlen;
unsigned char *n, *e, *d, *p, *q, *coeff, *comment;
RSA *rsa = NULL;
_libssh2_debug(session,
LIBSSH2_TRACE_AUTH,
"Computing RSA keys from private key data");
/* public key data */
if(_libssh2_get_bignum_bytes(decrypted, &n, &nlen)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"RSA no n");
return -1;
}
if(_libssh2_get_bignum_bytes(decrypted, &e, &elen)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"RSA no e");
return -1;
}
/* private key data */
if(_libssh2_get_bignum_bytes(decrypted, &d, &dlen)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"RSA no d");
return -1;
}
if(_libssh2_get_bignum_bytes(decrypted, &coeff, &coefflen)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"RSA no coeff");
return -1;
}
if(_libssh2_get_bignum_bytes(decrypted, &p, &plen)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"RSA no p");
return -1;
}
if(_libssh2_get_bignum_bytes(decrypted, &q, &qlen)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"RSA no q");
return -1;
}
if(_libssh2_get_string(decrypted, &comment, &commentlen)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"RSA no comment");
return -1;
}
if((rc = _libssh2_rsa_new(&rsa, e, elen, n, nlen, d, dlen, p, plen,
q, qlen, NULL, 0, NULL, 0,
coeff, coefflen)) != 0) {
_libssh2_debug(session,
LIBSSH2_TRACE_AUTH,
"Could not create RSA private key");
goto fail;
}
if(rsa != NULL)
rc = _libssh2_rsa_new_additional_parameters(rsa);
if(rsa != NULL && pubkeydata != NULL && method != NULL) {
EVP_PKEY *pk = EVP_PKEY_new();
EVP_PKEY_set1_RSA(pk, rsa);
rc = gen_publickey_from_rsa_evp(session, method, method_len,
pubkeydata, pubkeydata_len,
pk);
if(pk)
EVP_PKEY_free(pk);
}
if(rsa_ctx != NULL)
*rsa_ctx = rsa;
else
RSA_free(rsa);
return rc;
fail:
if(rsa != NULL)
RSA_free(rsa);
return _libssh2_error(session,
LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for private key data");
}
static int
_libssh2_rsa_new_openssh_private(libssh2_rsa_ctx ** rsa,
LIBSSH2_SESSION * session,
const char *filename,
unsigned const char *passphrase)
{
FILE *fp;
int rc;
unsigned char *buf = NULL;
struct string_buf *decrypted = NULL;
if(session == NULL) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Session is required");
return -1;
}
_libssh2_init_if_needed();
fp = fopen(filename, "r");
if(!fp) {
_libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to open OpenSSH RSA private key file");
return -1;
}
rc = _libssh2_openssh_pem_parse(session, passphrase, fp, &decrypted);
fclose(fp);
if(rc) {
return rc;
}
/* We have a new key file, now try and parse it using supported types */
rc = _libssh2_get_string(decrypted, &buf, NULL);
if(rc != 0 || buf == NULL) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Public key type in decrypted key data not found");
return -1;
}
if(strcmp("ssh-rsa", (const char *)buf) == 0) {
rc = gen_publickey_from_rsa_openssh_priv_data(session, decrypted,
NULL, 0,
NULL, 0, rsa);
}
else {
rc = -1;
}
if(decrypted)
_libssh2_string_buf_free(session, decrypted);
return rc;
}
int
_libssh2_rsa_new_private(libssh2_rsa_ctx ** rsa,
LIBSSH2_SESSION * session,
const char *filename, unsigned const char *passphrase)
{
int rc;
pem_read_bio_func read_rsa =
(pem_read_bio_func) &PEM_read_bio_RSAPrivateKey;
_libssh2_init_if_needed();
rc = read_private_key_from_file((void **) rsa, read_rsa,
filename, passphrase);
if(rc) {
rc = _libssh2_rsa_new_openssh_private(rsa, session,
filename, passphrase);
}
return rc;
}
#if LIBSSH2_DSA
int
_libssh2_dsa_new_private_frommemory(libssh2_dsa_ctx ** dsa,
LIBSSH2_SESSION * session,
const char *filedata, size_t filedata_len,
unsigned const char *passphrase)
{
int rc;
pem_read_bio_func read_dsa =
(pem_read_bio_func) &PEM_read_bio_DSAPrivateKey;
_libssh2_init_if_needed();
rc = read_private_key_from_memory((void **)dsa, read_dsa,
filedata, filedata_len, passphrase);
if(rc) {
rc = read_openssh_private_key_from_memory((void **)dsa, session,
"ssh-dsa", filedata, filedata_len, passphrase);
}
return rc;
}
static unsigned char *
gen_publickey_from_dsa(LIBSSH2_SESSION* session, DSA *dsa,
size_t *key_len)
{
int p_bytes, q_bytes, g_bytes, k_bytes;
unsigned long len;
unsigned char *key;
unsigned char *p;
const BIGNUM * p_bn;
const BIGNUM * q;
const BIGNUM * g;
const BIGNUM * pub_key;
#ifdef HAVE_OPAQUE_STRUCTS
DSA_get0_pqg(dsa, &p_bn, &q, &g);
#else
p_bn = dsa->p;
q = dsa->q;
g = dsa->g;
#endif
#ifdef HAVE_OPAQUE_STRUCTS
DSA_get0_key(dsa, &pub_key, NULL);
#else
pub_key = dsa->pub_key;
#endif
p_bytes = BN_num_bytes(p_bn) + 1;
q_bytes = BN_num_bytes(q) + 1;
g_bytes = BN_num_bytes(g) + 1;
k_bytes = BN_num_bytes(pub_key) + 1;
/* Key form is "ssh-dss" + p + q + g + pub_key. */
len = 4 + 7 + 4 + p_bytes + 4 + q_bytes + 4 + g_bytes + 4 + k_bytes;
key = LIBSSH2_ALLOC(session, len);
if(key == NULL) {
return NULL;
}
/* Process key encoding. */
p = key;
_libssh2_htonu32(p, 7); /* Key type. */
p += 4;
memcpy(p, "ssh-dss", 7);
p += 7;
p = write_bn(p, p_bn, p_bytes);
p = write_bn(p, q, q_bytes);
p = write_bn(p, g, g_bytes);
p = write_bn(p, pub_key, k_bytes);
*key_len = (size_t)(p - key);
return key;
}
static int
gen_publickey_from_dsa_evp(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
EVP_PKEY *pk)
{
DSA* dsa = NULL;
unsigned char *key;
unsigned char *method_buf = NULL;
size_t key_len;
_libssh2_debug(session,
LIBSSH2_TRACE_AUTH,
"Computing public key from DSA private key envelope");
dsa = EVP_PKEY_get1_DSA(pk);
if(dsa == NULL) {
/* Assume memory allocation error... what else could it be ? */
goto __alloc_error;
}
method_buf = LIBSSH2_ALLOC(session, 7); /* ssh-dss. */
if(method_buf == NULL) {
goto __alloc_error;
}
key = gen_publickey_from_dsa(session, dsa, &key_len);
if(key == NULL) {
goto __alloc_error;
}
DSA_free(dsa);
memcpy(method_buf, "ssh-dss", 7);
*method = method_buf;
*method_len = 7;
*pubkeydata = key;
*pubkeydata_len = key_len;
return 0;
__alloc_error:
if(dsa != NULL) {
DSA_free(dsa);
}
if(method_buf != NULL) {
LIBSSH2_FREE(session, method_buf);
}
return _libssh2_error(session,
LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for private key data");
}
static int
gen_publickey_from_dsa_openssh_priv_data(LIBSSH2_SESSION *session,
struct string_buf *decrypted,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
libssh2_dsa_ctx **dsa_ctx)
{
int rc = 0;
size_t plen, qlen, glen, pub_len, priv_len;
unsigned char *p, *q, *g, *pub_key, *priv_key;
DSA *dsa = NULL;
_libssh2_debug(session,
LIBSSH2_TRACE_AUTH,
"Computing DSA keys from private key data");
if(_libssh2_get_bignum_bytes(decrypted, &p, &plen)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"DSA no p");
return -1;
}
if(_libssh2_get_bignum_bytes(decrypted, &q, &qlen)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"DSA no q");
return -1;
}
if(_libssh2_get_bignum_bytes(decrypted, &g, &glen)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"DSA no g");
return -1;
}
if(_libssh2_get_bignum_bytes(decrypted, &pub_key, &pub_len)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"DSA no public key");
return -1;
}
if(_libssh2_get_bignum_bytes(decrypted, &priv_key, &priv_len)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"DSA no private key");
return -1;
}
rc = _libssh2_dsa_new(&dsa, p, plen, q, qlen, g, glen, pub_key, pub_len,
priv_key, priv_len);
if(rc != 0) {
_libssh2_debug(session,
LIBSSH2_ERROR_PROTO,
"Could not create DSA private key");
goto fail;
}
if(dsa != NULL && pubkeydata != NULL && method != NULL) {
EVP_PKEY *pk = EVP_PKEY_new();
EVP_PKEY_set1_DSA(pk, dsa);
rc = gen_publickey_from_dsa_evp(session, method, method_len,
pubkeydata, pubkeydata_len,
pk);
if(pk)
EVP_PKEY_free(pk);
}
if(dsa_ctx != NULL)
*dsa_ctx = dsa;
else
DSA_free(dsa);
return rc;
fail:
if(dsa != NULL)
DSA_free(dsa);
return _libssh2_error(session,
LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for private key data");
}
static int
_libssh2_dsa_new_openssh_private(libssh2_dsa_ctx ** dsa,
LIBSSH2_SESSION * session,
const char *filename,
unsigned const char *passphrase)
{
FILE *fp;
int rc;
unsigned char *buf = NULL;
struct string_buf *decrypted = NULL;
if(session == NULL) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Session is required");
return -1;
}
_libssh2_init_if_needed();
fp = fopen(filename, "r");
if(!fp) {
_libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to open OpenSSH DSA private key file");
return -1;
}
rc = _libssh2_openssh_pem_parse(session, passphrase, fp, &decrypted);
fclose(fp);
if(rc) {
return rc;
}
/* We have a new key file, now try and parse it using supported types */
rc = _libssh2_get_string(decrypted, &buf, NULL);
if(rc != 0 || buf == NULL) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Public key type in decrypted key data not found");
return -1;
}
if(strcmp("ssh-dss", (const char *)buf) == 0) {
rc = gen_publickey_from_dsa_openssh_priv_data(session, decrypted,
NULL, 0,
NULL, 0, dsa);
}
else {
rc = -1;
}
if(decrypted)
_libssh2_string_buf_free(session, decrypted);
return rc;
}
int
_libssh2_dsa_new_private(libssh2_dsa_ctx ** dsa,
LIBSSH2_SESSION * session,
const char *filename, unsigned const char *passphrase)
{
int rc;
pem_read_bio_func read_dsa =
(pem_read_bio_func) &PEM_read_bio_DSAPrivateKey;
_libssh2_init_if_needed();
rc = read_private_key_from_file((void **) dsa, read_dsa,
filename, passphrase);
if(rc) {
rc = _libssh2_dsa_new_openssh_private(dsa, session,
filename, passphrase);
}
return rc;
}
#endif /* LIBSSH_DSA */
#if LIBSSH2_ECDSA
int
_libssh2_ecdsa_new_private_frommemory(libssh2_ecdsa_ctx ** ec_ctx,
LIBSSH2_SESSION * session,
const char *filedata, size_t filedata_len,
unsigned const char *passphrase)
{
int rc;
pem_read_bio_func read_ec =
(pem_read_bio_func) &PEM_read_bio_ECPrivateKey;
_libssh2_init_if_needed();
rc = read_private_key_from_memory((void **) ec_ctx, read_ec,
filedata, filedata_len, passphrase);
if(rc) {
rc = read_openssh_private_key_from_memory((void **)ec_ctx, session,
"ssh-ecdsa", filedata,
filedata_len, passphrase);
}
return rc;
}
#endif /* LIBSSH2_ECDSA */
#if LIBSSH2_ED25519
int
_libssh2_curve25519_new(LIBSSH2_SESSION *session,
unsigned char **out_public_key,
unsigned char **out_private_key)
{
EVP_PKEY *key = NULL;
EVP_PKEY_CTX *pctx = NULL;
unsigned char *priv = NULL, *pub = NULL;
size_t privLen, pubLen;
int rc = -1;
pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_X25519, NULL);
if(pctx == NULL)
return -1;
if(EVP_PKEY_keygen_init(pctx) != 1 ||
EVP_PKEY_keygen(pctx, &key) != 1) {
goto cleanExit;
}
if(out_private_key != NULL) {
privLen = LIBSSH2_ED25519_KEY_LEN;
priv = LIBSSH2_ALLOC(session, privLen);
if(priv == NULL)
goto cleanExit;
if(EVP_PKEY_get_raw_private_key(key, priv, &privLen) != 1 ||
privLen != LIBSSH2_ED25519_KEY_LEN) {
goto cleanExit;
}
*out_private_key = priv;
priv = NULL;
}
if(out_public_key != NULL) {
pubLen = LIBSSH2_ED25519_KEY_LEN;
pub = LIBSSH2_ALLOC(session, pubLen);
if(pub == NULL)
goto cleanExit;
if(EVP_PKEY_get_raw_public_key(key, pub, &pubLen) != 1 ||
pubLen != LIBSSH2_ED25519_KEY_LEN) {
goto cleanExit;
}
*out_public_key = pub;
pub = NULL;
}
/* success */
rc = 0;
cleanExit:
if(pctx)
EVP_PKEY_CTX_free(pctx);
if(key)
EVP_PKEY_free(key);
if(priv)
LIBSSH2_FREE(session, priv);
if(pub)
LIBSSH2_FREE(session, pub);
return rc;
}
static int
gen_publickey_from_ed_evp(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
EVP_PKEY *pk)
{
const char methodName[] = "ssh-ed25519";
unsigned char *methodBuf = NULL;
size_t rawKeyLen = 0;
unsigned char *keyBuf = NULL;
size_t bufLen = 0;
unsigned char *bufPos = NULL;
_libssh2_debug(session, LIBSSH2_TRACE_AUTH,
"Computing public key from ED private key envelope");
methodBuf = LIBSSH2_ALLOC(session, sizeof(methodName) - 1);
if(!methodBuf) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for private key data");
goto fail;
}
memcpy(methodBuf, methodName, sizeof(methodName) - 1);
if(EVP_PKEY_get_raw_public_key(pk, NULL, &rawKeyLen) != 1) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"EVP_PKEY_get_raw_public_key failed");
goto fail;
}
/* Key form is: type_len(4) + type(11) + pub_key_len(4) + pub_key(32). */
bufLen = 4 + sizeof(methodName) - 1 + 4 + rawKeyLen;
bufPos = keyBuf = LIBSSH2_ALLOC(session, bufLen);
if(!keyBuf) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for private key data");
goto fail;
}
_libssh2_store_str(&bufPos, methodName, sizeof(methodName) - 1);
_libssh2_store_u32(&bufPos, rawKeyLen);
if(EVP_PKEY_get_raw_public_key(pk, bufPos, &rawKeyLen) != 1) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"EVP_PKEY_get_raw_public_key failed");
goto fail;
}
*method = methodBuf;
*method_len = sizeof(methodName) - 1;
*pubkeydata = keyBuf;
*pubkeydata_len = bufLen;
return 0;
fail:
if(methodBuf)
LIBSSH2_FREE(session, methodBuf);
if(keyBuf)
LIBSSH2_FREE(session, keyBuf);
return -1;
}
static int
gen_publickey_from_ed25519_openssh_priv_data(LIBSSH2_SESSION *session,
struct string_buf *decrypted,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
libssh2_ed25519_ctx **out_ctx)
{
libssh2_ed25519_ctx *ctx = NULL;
unsigned char *method_buf = NULL;
unsigned char *key = NULL;
int i, ret = 0;
unsigned char *pub_key, *priv_key, *buf;
size_t key_len = 0, tmp_len = 0;
unsigned char *p;
_libssh2_debug(session,
LIBSSH2_TRACE_AUTH,
"Computing ED25519 keys from private key data");
if(_libssh2_get_string(decrypted, &pub_key, &tmp_len) ||
tmp_len != LIBSSH2_ED25519_KEY_LEN) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Wrong public key length");
return -1;
}
if(_libssh2_get_string(decrypted, &priv_key, &tmp_len) ||
tmp_len != LIBSSH2_ED25519_PRIVATE_KEY_LEN) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Wrong private key length");
ret = -1;
goto clean_exit;
}
/* first 32 bytes of priv_key is the private key, the last 32 bytes are
the public key */
ctx = EVP_PKEY_new_raw_private_key(EVP_PKEY_ED25519, NULL,
(const unsigned char *)priv_key,
LIBSSH2_ED25519_KEY_LEN);
/* comment */
if(_libssh2_get_string(decrypted, &buf, &tmp_len)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Unable to read comment");
ret = -1;
goto clean_exit;
}
if(tmp_len > 0) {
unsigned char *comment = LIBSSH2_CALLOC(session, tmp_len + 1);
if(comment != NULL) {
memcpy(comment, buf, tmp_len);
memcpy(comment + tmp_len, "\0", 1);
_libssh2_debug(session, LIBSSH2_TRACE_AUTH, "Key comment: %s",
comment);
LIBSSH2_FREE(session, comment);
}
}
/* Padding */
i = 1;
while(decrypted->dataptr < decrypted->data + decrypted->len) {
if(*decrypted->dataptr != i) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Wrong padding");
ret = -1;
goto clean_exit;
}
i++;
decrypted->dataptr++;
}
if(ret == 0) {
_libssh2_debug(session,
LIBSSH2_TRACE_AUTH,
"Computing public key from ED25519 "
"private key envelope");
method_buf = LIBSSH2_ALLOC(session, 11); /* ssh-ed25519. */
if(method_buf == NULL) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for ED25519 key");
goto clean_exit;
}
/* Key form is: type_len(4) + type(11) + pub_key_len(4) +
pub_key(32). */
key_len = LIBSSH2_ED25519_KEY_LEN + 19;
key = LIBSSH2_CALLOC(session, key_len);
if(key == NULL) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for ED25519 key");
goto clean_exit;
}
p = key;
_libssh2_store_str(&p, "ssh-ed25519", 11);
_libssh2_store_str(&p, (const char *)pub_key, LIBSSH2_ED25519_KEY_LEN);
memcpy(method_buf, "ssh-ed25519", 11);
if(method != NULL)
*method = method_buf;
else
LIBSSH2_FREE(session, method_buf);
if(method_len != NULL)
*method_len = 11;
if(pubkeydata != NULL)
*pubkeydata = key;
else
LIBSSH2_FREE(session, key);
if(pubkeydata_len != NULL)
*pubkeydata_len = key_len;
if(out_ctx != NULL)
*out_ctx = ctx;
else if(ctx != NULL)
_libssh2_ed25519_free(ctx);
return 0;
}
clean_exit:
if(ctx)
_libssh2_ed25519_free(ctx);
if(method_buf)
LIBSSH2_FREE(session, method_buf);
if(key)
LIBSSH2_FREE(session, key);
return -1;
}
int
_libssh2_ed25519_new_private(libssh2_ed25519_ctx ** ed_ctx,
LIBSSH2_SESSION * session,
const char *filename, const uint8_t *passphrase)
{
int rc;
FILE *fp;
unsigned char *buf;
struct string_buf *decrypted = NULL;
libssh2_ed25519_ctx *ctx = NULL;
if(session == NULL) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Session is required");
return -1;
}
_libssh2_init_if_needed();
fp = fopen(filename, "r");
if(!fp) {
_libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to open ED25519 private key file");
return -1;
}
rc = _libssh2_openssh_pem_parse(session, passphrase, fp, &decrypted);
fclose(fp);
if(rc) {
return rc;
}
/* We have a new key file, now try and parse it using supported types */
rc = _libssh2_get_string(decrypted, &buf, NULL);
if(rc != 0 || buf == NULL) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Public key type in decrypted key data not found");
return -1;
}
if(strcmp("ssh-ed25519", (const char *)buf) == 0) {
rc = gen_publickey_from_ed25519_openssh_priv_data(session,
decrypted,
NULL,
NULL,
NULL,
NULL,
&ctx);
}
else {
rc = -1;
}
if(decrypted)
_libssh2_string_buf_free(session, decrypted);
if(rc == 0) {
if(ed_ctx != NULL)
*ed_ctx = ctx;
else if(ctx != NULL)
_libssh2_ed25519_free(ctx);
}
return rc;
}
int
_libssh2_ed25519_new_private_frommemory(libssh2_ed25519_ctx ** ed_ctx,
LIBSSH2_SESSION * session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase)
{
libssh2_ed25519_ctx *ctx = NULL;
_libssh2_init_if_needed();
if(read_private_key_from_memory((void **)&ctx,
(pem_read_bio_func)
&PEM_read_bio_PrivateKey,
filedata, filedata_len, passphrase) == 0) {
if(EVP_PKEY_id(ctx) != EVP_PKEY_ED25519) {
_libssh2_ed25519_free(ctx);
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Private key is not an ED25519 key");
}
*ed_ctx = ctx;
return 0;
}
return read_openssh_private_key_from_memory((void **)ed_ctx, session,
"ssh-ed25519",
filedata, filedata_len,
passphrase);
}
int
_libssh2_ed25519_new_public(libssh2_ed25519_ctx ** ed_ctx,
LIBSSH2_SESSION * session,
const unsigned char *raw_pub_key,
const uint8_t key_len)
{
libssh2_ed25519_ctx *ctx = NULL;
if(ed_ctx == NULL)
return -1;
ctx = EVP_PKEY_new_raw_public_key(EVP_PKEY_ED25519, NULL,
raw_pub_key, key_len);
if(!ctx)
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"could not create ED25519 public key");
if(ed_ctx != NULL)
*ed_ctx = ctx;
else if(ctx)
_libssh2_ed25519_free(ctx);
return 0;
}
#endif /* LIBSSH2_ED25519 */
int
_libssh2_rsa_sha1_sign(LIBSSH2_SESSION * session,
libssh2_rsa_ctx * rsactx,
const unsigned char *hash,
size_t hash_len,
unsigned char **signature, size_t *signature_len)
{
int ret;
unsigned char *sig;
unsigned int sig_len;
sig_len = RSA_size(rsactx);
sig = LIBSSH2_ALLOC(session, sig_len);
if(!sig) {
return -1;
}
ret = RSA_sign(NID_sha1, hash, hash_len, sig, &sig_len, rsactx);
if(!ret) {
LIBSSH2_FREE(session, sig);
return -1;
}
*signature = sig;
*signature_len = sig_len;
return 0;
}
#if LIBSSH2_DSA
int
_libssh2_dsa_sha1_sign(libssh2_dsa_ctx * dsactx,
const unsigned char *hash,
unsigned long hash_len, unsigned char *signature)
{
DSA_SIG *sig;
const BIGNUM * r;
const BIGNUM * s;
int r_len, s_len;
(void) hash_len;
sig = DSA_do_sign(hash, SHA_DIGEST_LENGTH, dsactx);
if(!sig) {
return -1;
}
#ifdef HAVE_OPAQUE_STRUCTS
DSA_SIG_get0(sig, &r, &s);
#else
r = sig->r;
s = sig->s;
#endif
r_len = BN_num_bytes(r);
if(r_len < 1 || r_len > 20) {
DSA_SIG_free(sig);
return -1;
}
s_len = BN_num_bytes(s);
if(s_len < 1 || s_len > 20) {
DSA_SIG_free(sig);
return -1;
}
memset(signature, 0, 40);
BN_bn2bin(r, signature + (20 - r_len));
BN_bn2bin(s, signature + 20 + (20 - s_len));
DSA_SIG_free(sig);
return 0;
}
#endif /* LIBSSH_DSA */
#if LIBSSH2_ECDSA
int
_libssh2_ecdsa_sign(LIBSSH2_SESSION * session, libssh2_ecdsa_ctx * ec_ctx,
const unsigned char *hash, unsigned long hash_len,
unsigned char **signature, size_t *signature_len)
{
int r_len, s_len;
int rc = 0;
size_t out_buffer_len = 0;
unsigned char *sp;
const BIGNUM *pr = NULL, *ps = NULL;
unsigned char *temp_buffer = NULL;
unsigned char *out_buffer = NULL;
ECDSA_SIG *sig = ECDSA_do_sign(hash, hash_len, ec_ctx);
if(sig == NULL)
return -1;
#ifdef HAVE_OPAQUE_STRUCTS
ECDSA_SIG_get0(sig, &pr, &ps);
#else
pr = sig->r;
ps = sig->s;
#endif
r_len = BN_num_bytes(pr) + 1;
s_len = BN_num_bytes(ps) + 1;
temp_buffer = malloc(r_len + s_len + 8);
if(temp_buffer == NULL) {
rc = -1;
goto clean_exit;
}
sp = temp_buffer;
sp = write_bn(sp, pr, r_len);
sp = write_bn(sp, ps, s_len);
out_buffer_len = (size_t)(sp - temp_buffer);
out_buffer = LIBSSH2_CALLOC(session, out_buffer_len);
if(out_buffer == NULL) {
rc = -1;
goto clean_exit;
}
memcpy(out_buffer, temp_buffer, out_buffer_len);
*signature = out_buffer;
*signature_len = out_buffer_len;
clean_exit:
if(temp_buffer != NULL)
free(temp_buffer);
if(sig)
ECDSA_SIG_free(sig);
return rc;
}
#endif /* LIBSSH2_ECDSA */
int
_libssh2_sha1_init(libssh2_sha1_ctx *ctx)
{
#ifdef HAVE_OPAQUE_STRUCTS
*ctx = EVP_MD_CTX_new();
if(*ctx == NULL)
return 0;
if(EVP_DigestInit(*ctx, EVP_get_digestbyname("sha1")))
return 1;
EVP_MD_CTX_free(*ctx);
*ctx = NULL;
return 0;
#else
EVP_MD_CTX_init(ctx);
return EVP_DigestInit(ctx, EVP_get_digestbyname("sha1"));
#endif
}
int
_libssh2_sha1(const unsigned char *message, unsigned long len,
unsigned char *out)
{
#ifdef HAVE_OPAQUE_STRUCTS
EVP_MD_CTX * ctx = EVP_MD_CTX_new();
if(ctx == NULL)
return 1; /* error */
if(EVP_DigestInit(ctx, EVP_get_digestbyname("sha1"))) {
EVP_DigestUpdate(ctx, message, len);
EVP_DigestFinal(ctx, out, NULL);
EVP_MD_CTX_free(ctx);
return 0; /* success */
}
EVP_MD_CTX_free(ctx);
#else
EVP_MD_CTX ctx;
EVP_MD_CTX_init(&ctx);
if(EVP_DigestInit(&ctx, EVP_get_digestbyname("sha1"))) {
EVP_DigestUpdate(&ctx, message, len);
EVP_DigestFinal(&ctx, out, NULL);
return 0; /* success */
}
#endif
return 1; /* error */
}
int
_libssh2_sha256_init(libssh2_sha256_ctx *ctx)
{
#ifdef HAVE_OPAQUE_STRUCTS
*ctx = EVP_MD_CTX_new();
if(*ctx == NULL)
return 0;
if(EVP_DigestInit(*ctx, EVP_get_digestbyname("sha256")))
return 1;
EVP_MD_CTX_free(*ctx);
*ctx = NULL;
return 0;
#else
EVP_MD_CTX_init(ctx);
return EVP_DigestInit(ctx, EVP_get_digestbyname("sha256"));
#endif
}
int
_libssh2_sha256(const unsigned char *message, unsigned long len,
unsigned char *out)
{
#ifdef HAVE_OPAQUE_STRUCTS
EVP_MD_CTX * ctx = EVP_MD_CTX_new();
if(ctx == NULL)
return 1; /* error */
if(EVP_DigestInit(ctx, EVP_get_digestbyname("sha256"))) {
EVP_DigestUpdate(ctx, message, len);
EVP_DigestFinal(ctx, out, NULL);
EVP_MD_CTX_free(ctx);
return 0; /* success */
}
EVP_MD_CTX_free(ctx);
#else
EVP_MD_CTX ctx;
EVP_MD_CTX_init(&ctx);
if(EVP_DigestInit(&ctx, EVP_get_digestbyname("sha256"))) {
EVP_DigestUpdate(&ctx, message, len);
EVP_DigestFinal(&ctx, out, NULL);
return 0; /* success */
}
#endif
return 1; /* error */
}
int
_libssh2_sha384_init(libssh2_sha384_ctx *ctx)
{
#ifdef HAVE_OPAQUE_STRUCTS
*ctx = EVP_MD_CTX_new();
if(*ctx == NULL)
return 0;
if(EVP_DigestInit(*ctx, EVP_get_digestbyname("sha384")))
return 1;
EVP_MD_CTX_free(*ctx);
*ctx = NULL;
return 0;
#else
EVP_MD_CTX_init(ctx);
return EVP_DigestInit(ctx, EVP_get_digestbyname("sha384"));
#endif
}
int
_libssh2_sha384(const unsigned char *message, unsigned long len,
unsigned char *out)
{
#ifdef HAVE_OPAQUE_STRUCTS
EVP_MD_CTX * ctx = EVP_MD_CTX_new();
if(ctx == NULL)
return 1; /* error */
if(EVP_DigestInit(ctx, EVP_get_digestbyname("sha384"))) {
EVP_DigestUpdate(ctx, message, len);
EVP_DigestFinal(ctx, out, NULL);
EVP_MD_CTX_free(ctx);
return 0; /* success */
}
EVP_MD_CTX_free(ctx);
#else
EVP_MD_CTX ctx;
EVP_MD_CTX_init(&ctx);
if(EVP_DigestInit(&ctx, EVP_get_digestbyname("sha384"))) {
EVP_DigestUpdate(&ctx, message, len);
EVP_DigestFinal(&ctx, out, NULL);
return 0; /* success */
}
#endif
return 1; /* error */
}
int
_libssh2_sha512_init(libssh2_sha512_ctx *ctx)
{
#ifdef HAVE_OPAQUE_STRUCTS
*ctx = EVP_MD_CTX_new();
if(*ctx == NULL)
return 0;
if(EVP_DigestInit(*ctx, EVP_get_digestbyname("sha512")))
return 1;
EVP_MD_CTX_free(*ctx);
*ctx = NULL;
return 0;
#else
EVP_MD_CTX_init(ctx);
return EVP_DigestInit(ctx, EVP_get_digestbyname("sha512"));
#endif
}
int
_libssh2_sha512(const unsigned char *message, unsigned long len,
unsigned char *out)
{
#ifdef HAVE_OPAQUE_STRUCTS
EVP_MD_CTX * ctx = EVP_MD_CTX_new();
if(ctx == NULL)
return 1; /* error */
if(EVP_DigestInit(ctx, EVP_get_digestbyname("sha512"))) {
EVP_DigestUpdate(ctx, message, len);
EVP_DigestFinal(ctx, out, NULL);
EVP_MD_CTX_free(ctx);
return 0; /* success */
}
EVP_MD_CTX_free(ctx);
#else
EVP_MD_CTX ctx;
EVP_MD_CTX_init(&ctx);
if(EVP_DigestInit(&ctx, EVP_get_digestbyname("sha512"))) {
EVP_DigestUpdate(&ctx, message, len);
EVP_DigestFinal(&ctx, out, NULL);
return 0; /* success */
}
#endif
return 1; /* error */
}
int
_libssh2_md5_init(libssh2_md5_ctx *ctx)
{
/* MD5 digest is not supported in OpenSSL FIPS mode
* Trying to init it will result in a latent OpenSSL error:
* "digital envelope routines:FIPS_DIGESTINIT:disabled for fips"
* So, just return 0 in FIPS mode
*/
#if OPENSSL_VERSION_NUMBER >= 0x000907000L && \
defined(OPENSSL_VERSION_MAJOR) && \
OPENSSL_VERSION_MAJOR < 3 && \
!defined(LIBRESSL_VERSION_NUMBER)
if(FIPS_mode() != 0)
return 0;
#endif
#ifdef HAVE_OPAQUE_STRUCTS
*ctx = EVP_MD_CTX_new();
if(*ctx == NULL)
return 0;
if(EVP_DigestInit(*ctx, EVP_get_digestbyname("md5")))
return 1;
EVP_MD_CTX_free(*ctx);
*ctx = NULL;
return 0;
#else
EVP_MD_CTX_init(ctx);
return EVP_DigestInit(ctx, EVP_get_digestbyname("md5"));
#endif
}
#if LIBSSH2_ECDSA
static int
gen_publickey_from_ec_evp(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
EVP_PKEY *pk)
{
int rc = 0;
EC_KEY *ec = NULL;
unsigned char *p;
unsigned char *method_buf = NULL;
unsigned char *key;
size_t key_len = 0;
unsigned char *octal_value = NULL;
size_t octal_len;
const EC_POINT *public_key;
const EC_GROUP *group;
BN_CTX *bn_ctx;
libssh2_curve_type type;
_libssh2_debug(session,
LIBSSH2_TRACE_AUTH,
"Computing public key from EC private key envelope");
bn_ctx = BN_CTX_new();
if(bn_ctx == NULL)
return -1;
ec = EVP_PKEY_get1_EC_KEY(pk);
if(ec == NULL) {
rc = -1;
goto clean_exit;
}
public_key = EC_KEY_get0_public_key(ec);
group = EC_KEY_get0_group(ec);
type = _libssh2_ecdsa_get_curve_type(ec);
method_buf = LIBSSH2_ALLOC(session, 19);
if(method_buf == NULL) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"out of memory");
}
if(type == LIBSSH2_EC_CURVE_NISTP256)
memcpy(method_buf, "ecdsa-sha2-nistp256", 19);
else if(type == LIBSSH2_EC_CURVE_NISTP384)
memcpy(method_buf, "ecdsa-sha2-nistp384", 19);
else if(type == LIBSSH2_EC_CURVE_NISTP521)
memcpy(method_buf, "ecdsa-sha2-nistp521", 19);
else {
_libssh2_debug(session,
LIBSSH2_TRACE_ERROR,
"Unsupported EC private key type");
rc = -1;
goto clean_exit;
}
/* get length */
octal_len = EC_POINT_point2oct(group, public_key,
POINT_CONVERSION_UNCOMPRESSED,
NULL, 0, bn_ctx);
if(octal_len > EC_MAX_POINT_LEN) {
rc = -1;
goto clean_exit;
}
octal_value = malloc(octal_len);
if(octal_value == NULL) {
rc = -1;
goto clean_exit;
}
/* convert to octal */
if(EC_POINT_point2oct(group, public_key, POINT_CONVERSION_UNCOMPRESSED,
octal_value, octal_len, bn_ctx) != octal_len) {
rc = -1;
goto clean_exit;
}
/* Key form is: type_len(4) + type(19) + domain_len(4) + domain(8) +
pub_key_len(4) + pub_key(~65). */
key_len = 4 + 19 + 4 + 8 + 4 + octal_len;
key = LIBSSH2_ALLOC(session, key_len);
if(key == NULL) {
rc = -1;
goto clean_exit;
}
/* Process key encoding. */
p = key;
/* Key type */
_libssh2_store_str(&p, (const char *)method_buf, 19);
/* Name domain */
_libssh2_store_str(&p, (const char *)method_buf + 11, 8);
/* Public key */
_libssh2_store_str(&p, (const char *)octal_value, octal_len);
*method = method_buf;
*method_len = 19;
*pubkeydata = key;
*pubkeydata_len = key_len;
clean_exit:
if(ec != NULL)
EC_KEY_free(ec);
if(bn_ctx != NULL) {
BN_CTX_free(bn_ctx);
}
if(octal_value != NULL)
free(octal_value);
if(rc == 0)
return 0;
if(method_buf != NULL)
LIBSSH2_FREE(session, method_buf);
return -1;
}
static int
gen_publickey_from_ecdsa_openssh_priv_data(LIBSSH2_SESSION *session,
libssh2_curve_type curve_type,
struct string_buf *decrypted,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
libssh2_ecdsa_ctx **ec_ctx)
{
int rc = 0;
size_t curvelen, exponentlen, pointlen;
unsigned char *curve, *exponent, *point_buf;
EC_KEY *ec_key = NULL;
BIGNUM *bn_exponent;
_libssh2_debug(session,
LIBSSH2_TRACE_AUTH,
"Computing ECDSA keys from private key data");
if(_libssh2_get_string(decrypted, &curve, &curvelen) ||
curvelen == 0) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"ECDSA no curve");
return -1;
}
if(_libssh2_get_string(decrypted, &point_buf, &pointlen)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"ECDSA no point");
return -1;
}
if(_libssh2_get_bignum_bytes(decrypted, &exponent, &exponentlen)) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"ECDSA no exponent");
return -1;
}
if((rc = _libssh2_ecdsa_curve_name_with_octal_new(&ec_key, point_buf,
pointlen, curve_type)) != 0) {
rc = -1;
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"ECDSA could not create key");
goto fail;
}
bn_exponent = BN_new();
if(bn_exponent == NULL) {
rc = -1;
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for private key data");
goto fail;
}
BN_bin2bn(exponent, exponentlen, bn_exponent);
rc = (EC_KEY_set_private_key(ec_key, bn_exponent) != 1);
if(rc == 0 && ec_key != NULL && pubkeydata != NULL && method != NULL) {
EVP_PKEY *pk = EVP_PKEY_new();
EVP_PKEY_set1_EC_KEY(pk, ec_key);
rc = gen_publickey_from_ec_evp(session, method, method_len,
pubkeydata, pubkeydata_len,
pk);
if(pk)
EVP_PKEY_free(pk);
}
if(ec_ctx != NULL)
*ec_ctx = ec_key;
else
EC_KEY_free(ec_key);
return rc;
fail:
if(ec_key != NULL)
EC_KEY_free(ec_key);
return rc;
}
static int
_libssh2_ecdsa_new_openssh_private(libssh2_ecdsa_ctx ** ec_ctx,
LIBSSH2_SESSION * session,
const char *filename,
unsigned const char *passphrase)
{
FILE *fp;
int rc;
unsigned char *buf = NULL;
libssh2_curve_type type;
struct string_buf *decrypted = NULL;
if(session == NULL) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Session is required");
return -1;
}
_libssh2_init_if_needed();
fp = fopen(filename, "r");
if(!fp) {
_libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to open OpenSSH ECDSA private key file");
return -1;
}
rc = _libssh2_openssh_pem_parse(session, passphrase, fp, &decrypted);
fclose(fp);
if(rc) {
return rc;
}
/* We have a new key file, now try and parse it using supported types */
rc = _libssh2_get_string(decrypted, &buf, NULL);
if(rc != 0 || buf == NULL) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Public key type in decrypted key data not found");
return -1;
}
rc = _libssh2_ecdsa_curve_type_from_name((const char *)buf, &type);
if(rc == 0) {
rc = gen_publickey_from_ecdsa_openssh_priv_data(session, type,
decrypted, NULL, 0,
NULL, 0, ec_ctx);
}
else {
rc = -1;
}
if(decrypted)
_libssh2_string_buf_free(session, decrypted);
return rc;
}
int
_libssh2_ecdsa_new_private(libssh2_ecdsa_ctx ** ec_ctx,
LIBSSH2_SESSION * session,
const char *filename, unsigned const char *passphrase)
{
int rc;
pem_read_bio_func read_ec = (pem_read_bio_func) &PEM_read_bio_ECPrivateKey;
_libssh2_init_if_needed();
rc = read_private_key_from_file((void **) ec_ctx, read_ec,
filename, passphrase);
if(rc) {
return _libssh2_ecdsa_new_openssh_private(ec_ctx, session,
filename, passphrase);
}
return rc;
}
/*
* _libssh2_ecdsa_create_key
*
* Creates a local private key based on input curve
* and returns octal value and octal length
*
*/
int
_libssh2_ecdsa_create_key(LIBSSH2_SESSION *session,
_libssh2_ec_key **out_private_key,
unsigned char **out_public_key_octal,
size_t *out_public_key_octal_len,
libssh2_curve_type curve_type)
{
int ret = 1;
size_t octal_len = 0;
unsigned char octal_value[EC_MAX_POINT_LEN];
const EC_POINT *public_key = NULL;
EC_KEY *private_key = NULL;
const EC_GROUP *group = NULL;
/* create key */
BN_CTX *bn_ctx = BN_CTX_new();
if(!bn_ctx)
return -1;
private_key = EC_KEY_new_by_curve_name(curve_type);
group = EC_KEY_get0_group(private_key);
EC_KEY_generate_key(private_key);
public_key = EC_KEY_get0_public_key(private_key);
/* get length */
octal_len = EC_POINT_point2oct(group, public_key,
POINT_CONVERSION_UNCOMPRESSED,
NULL, 0, bn_ctx);
if(octal_len > EC_MAX_POINT_LEN) {
ret = -1;
goto clean_exit;
}
/* convert to octal */
if(EC_POINT_point2oct(group, public_key, POINT_CONVERSION_UNCOMPRESSED,
octal_value, octal_len, bn_ctx) != octal_len) {
ret = -1;
goto clean_exit;
}
if(out_private_key != NULL)
*out_private_key = private_key;
if(out_public_key_octal) {
*out_public_key_octal = LIBSSH2_ALLOC(session, octal_len);
if(*out_public_key_octal == NULL) {
ret = -1;
goto clean_exit;
}
memcpy(*out_public_key_octal, octal_value, octal_len);
}
if(out_public_key_octal_len != NULL)
*out_public_key_octal_len = octal_len;
clean_exit:
if(bn_ctx)
BN_CTX_free(bn_ctx);
return (ret == 1) ? 0 : -1;
}
/* _libssh2_ecdh_gen_k
*
* Computes the shared secret K given a local private key,
* remote public key and length
*/
int
_libssh2_ecdh_gen_k(_libssh2_bn **k, _libssh2_ec_key *private_key,
const unsigned char *server_public_key, size_t server_public_key_len)
{
int ret = 0;
int rc;
size_t secret_len;
unsigned char *secret = NULL;
const EC_GROUP *private_key_group;
EC_POINT *server_public_key_point;
BN_CTX *bn_ctx = BN_CTX_new();
if(!bn_ctx)
return -1;
if(k == NULL)
return -1;
private_key_group = EC_KEY_get0_group(private_key);
server_public_key_point = EC_POINT_new(private_key_group);
if(server_public_key_point == NULL)
return -1;
rc = EC_POINT_oct2point(private_key_group, server_public_key_point,
server_public_key, server_public_key_len, bn_ctx);
if(rc != 1) {
ret = -1;
goto clean_exit;
}
secret_len = (EC_GROUP_get_degree(private_key_group) + 7) / 8;
secret = malloc(secret_len);
if(!secret) {
ret = -1;
goto clean_exit;
}
secret_len = ECDH_compute_key(secret, secret_len, server_public_key_point,
private_key, NULL);
if(secret_len <= 0 || secret_len > EC_MAX_POINT_LEN) {
ret = -1;
goto clean_exit;
}
BN_bin2bn(secret, secret_len, *k);
clean_exit:
if(server_public_key_point != NULL)
EC_POINT_free(server_public_key_point);
if(bn_ctx != NULL)
BN_CTX_free(bn_ctx);
if(secret != NULL)
free(secret);
return ret;
}
#endif /* LIBSSH2_ECDSA */
#if LIBSSH2_ED25519
int
_libssh2_ed25519_sign(libssh2_ed25519_ctx *ctx, LIBSSH2_SESSION *session,
uint8_t **out_sig, size_t *out_sig_len,
const uint8_t *message, size_t message_len)
{
int rc = -1;
EVP_MD_CTX *md_ctx = EVP_MD_CTX_new();
size_t sig_len = 0;
unsigned char *sig = NULL;
if(md_ctx != NULL) {
if(EVP_DigestSignInit(md_ctx, NULL, NULL, NULL, ctx) != 1)
goto clean_exit;
if(EVP_DigestSign(md_ctx, NULL, &sig_len, message, message_len) != 1)
goto clean_exit;
if(sig_len != LIBSSH2_ED25519_SIG_LEN)
goto clean_exit;
sig = LIBSSH2_CALLOC(session, sig_len);
if(sig == NULL)
goto clean_exit;
rc = EVP_DigestSign(md_ctx, sig, &sig_len, message, message_len);
}
if(rc == 1) {
*out_sig = sig;
*out_sig_len = sig_len;
}
else {
*out_sig_len = 0;
*out_sig = NULL;
LIBSSH2_FREE(session, sig);
}
clean_exit:
if(md_ctx)
EVP_MD_CTX_free(md_ctx);
return (rc == 1 ? 0 : -1);
}
int
_libssh2_curve25519_gen_k(_libssh2_bn **k,
uint8_t private_key[LIBSSH2_ED25519_KEY_LEN],
uint8_t server_public_key[LIBSSH2_ED25519_KEY_LEN])
{
int rc = -1;
unsigned char out_shared_key[LIBSSH2_ED25519_KEY_LEN];
EVP_PKEY *peer_key = NULL, *server_key = NULL;
EVP_PKEY_CTX *server_key_ctx = NULL;
BN_CTX *bn_ctx = NULL;
size_t out_len = 0;
if(k == NULL || *k == NULL)
return -1;
bn_ctx = BN_CTX_new();
if(bn_ctx == NULL)
return -1;
peer_key = EVP_PKEY_new_raw_public_key(EVP_PKEY_X25519, NULL,
server_public_key,
LIBSSH2_ED25519_KEY_LEN);
server_key = EVP_PKEY_new_raw_private_key(EVP_PKEY_X25519, NULL,
private_key,
LIBSSH2_ED25519_KEY_LEN);
if(peer_key == NULL || server_key == NULL) {
goto cleanExit;
}
server_key_ctx = EVP_PKEY_CTX_new(server_key, NULL);
if(server_key_ctx == NULL) {
goto cleanExit;
}
rc = EVP_PKEY_derive_init(server_key_ctx);
if(rc <= 0) goto cleanExit;
rc = EVP_PKEY_derive_set_peer(server_key_ctx, peer_key);
if(rc <= 0) goto cleanExit;
rc = EVP_PKEY_derive(server_key_ctx, NULL, &out_len);
if(rc <= 0) goto cleanExit;
if(out_len != LIBSSH2_ED25519_KEY_LEN) {
rc = -1;
goto cleanExit;
}
rc = EVP_PKEY_derive(server_key_ctx, out_shared_key, &out_len);
if(rc == 1 && out_len == LIBSSH2_ED25519_KEY_LEN) {
BN_bin2bn(out_shared_key, LIBSSH2_ED25519_KEY_LEN, *k);
}
else {
rc = -1;
}
cleanExit:
if(server_key_ctx)
EVP_PKEY_CTX_free(server_key_ctx);
if(peer_key)
EVP_PKEY_free(peer_key);
if(server_key)
EVP_PKEY_free(server_key);
if(bn_ctx != NULL)
BN_CTX_free(bn_ctx);
return (rc == 1) ? 0 : -1;
}
int
_libssh2_ed25519_verify(libssh2_ed25519_ctx *ctx, const uint8_t *s,
size_t s_len, const uint8_t *m, size_t m_len)
{
int ret = -1;
EVP_MD_CTX *md_ctx = EVP_MD_CTX_new();
if(NULL == md_ctx)
return -1;
ret = EVP_DigestVerifyInit(md_ctx, NULL, NULL, NULL, ctx);
if(ret != 1)
goto clean_exit;
ret = EVP_DigestVerify(md_ctx, s, s_len, m, m_len);
clean_exit:
EVP_MD_CTX_free(md_ctx);
return (ret == 1) ? 0 : -1;
}
#endif /* LIBSSH2_ED25519 */
static int
_libssh2_pub_priv_openssh_keyfile(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekey,
const char *passphrase)
{
FILE *fp;
unsigned char *buf = NULL;
struct string_buf *decrypted = NULL;
int rc = 0;
if(session == NULL) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Session is required");
return -1;
}
_libssh2_init_if_needed();
fp = fopen(privatekey, "r");
if(!fp) {
_libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to open private key file");
return -1;
}
rc = _libssh2_openssh_pem_parse(session, (const unsigned char *)passphrase,
fp, &decrypted);
fclose(fp);
if(rc) {
_libssh2_error(session, LIBSSH2_ERROR_FILE,
"Not an OpenSSH key file");
return rc;
}
/* We have a new key file, now try and parse it using supported types */
rc = _libssh2_get_string(decrypted, &buf, NULL);
if(rc != 0 || buf == NULL) {
_libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Public key type in decrypted key data not found");
return -1;
}
rc = -1;
#if LIBSSH2_ED25519
if(strcmp("ssh-ed25519", (const char *)buf) == 0) {
rc = gen_publickey_from_ed25519_openssh_priv_data(session, decrypted,
method, method_len,
pubkeydata,
pubkeydata_len,
NULL);
}
#endif
#if LIBSSH2_RSA
if(strcmp("ssh-rsa", (const char *)buf) == 0) {
rc = gen_publickey_from_rsa_openssh_priv_data(session, decrypted,
method, method_len,
pubkeydata,
pubkeydata_len,
NULL);
}
#endif
#if LIBSSH2_DSA
if(strcmp("ssh-dss", (const char *)buf) == 0) {
rc = gen_publickey_from_dsa_openssh_priv_data(session, decrypted,
method, method_len,
pubkeydata,
pubkeydata_len,
NULL);
}
#endif
#if LIBSSH2_ECDSA
{
libssh2_curve_type type;
if(_libssh2_ecdsa_curve_type_from_name((const char *)buf,
&type) == 0) {
rc = gen_publickey_from_ecdsa_openssh_priv_data(session, type,
decrypted,
method, method_len,
pubkeydata,
pubkeydata_len,
NULL);
}
}
#endif
if(decrypted)
_libssh2_string_buf_free(session, decrypted);
if(rc != 0) {
_libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unsupported OpenSSH key type");
}
return rc;
}
int
_libssh2_pub_priv_keyfile(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekey,
const char *passphrase)
{
int st;
BIO* bp;
EVP_PKEY* pk;
int pktype;
int rc;
_libssh2_debug(session,
LIBSSH2_TRACE_AUTH,
"Computing public key from private key file: %s",
privatekey);
bp = BIO_new_file(privatekey, "r");
if(bp == NULL) {
return _libssh2_error(session,
LIBSSH2_ERROR_FILE,
"Unable to extract public key from private key "
"file: Unable to open private key file");
}
BIO_reset(bp);
pk = PEM_read_bio_PrivateKey(bp, NULL, NULL, (void *)passphrase);
BIO_free(bp);
if(pk == NULL) {
/* Try OpenSSH format */
rc = _libssh2_pub_priv_openssh_keyfile(session,
method,
method_len,
pubkeydata, pubkeydata_len,
privatekey, passphrase);
if(rc != 0) {
return _libssh2_error(session,
LIBSSH2_ERROR_FILE,
"Unable to extract public key "
"from private key file: "
"Wrong passphrase or invalid/unrecognized "
"private key file format");
}
return 0;
}
#ifdef HAVE_OPAQUE_STRUCTS
pktype = EVP_PKEY_id(pk);
#else
pktype = pk->type;
#endif
switch(pktype) {
#if LIBSSH2_ED25519
case EVP_PKEY_ED25519 :
st = gen_publickey_from_ed_evp(
session, method, method_len, pubkeydata, pubkeydata_len, pk);
break;
#endif /* LIBSSH2_ED25519 */
case EVP_PKEY_RSA :
st = gen_publickey_from_rsa_evp(
session, method, method_len, pubkeydata, pubkeydata_len, pk);
break;
#if LIBSSH2_DSA
case EVP_PKEY_DSA :
st = gen_publickey_from_dsa_evp(
session, method, method_len, pubkeydata, pubkeydata_len, pk);
break;
#endif /* LIBSSH_DSA */
#if LIBSSH2_ECDSA
case EVP_PKEY_EC :
st = gen_publickey_from_ec_evp(
session, method, method_len, pubkeydata, pubkeydata_len, pk);
break;
#endif
default :
st = _libssh2_error(session,
LIBSSH2_ERROR_FILE,
"Unable to extract public key "
"from private key file: "
"Unsupported private key file format");
break;
}
EVP_PKEY_free(pk);
return st;
}
static int
_libssh2_pub_priv_openssh_keyfilememory(LIBSSH2_SESSION *session,
void **key_ctx,
const char *key_type,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekeydata,
size_t privatekeydata_len,
unsigned const char *passphrase)
{
int rc;
unsigned char *buf = NULL;
struct string_buf *decrypted = NULL;
if(key_ctx != NULL)
*key_ctx = NULL;
if(session == NULL)
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Session is required");
if(key_type != NULL && (strlen(key_type) > 11 || strlen(key_type) < 7))
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"type is invalid");
_libssh2_init_if_needed();
rc = _libssh2_openssh_pem_parse_memory(session, passphrase,
privatekeydata,
privatekeydata_len, &decrypted);
if(rc)
return rc;
/* We have a new key file, now try and parse it using supported types */
rc = _libssh2_get_string(decrypted, &buf, NULL);
if(rc != 0 || buf == NULL)
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Public key type in decrypted "
"key data not found");
rc = LIBSSH2_ERROR_FILE;
#if LIBSSH2_ED25519
if(strcmp("ssh-ed25519", (const char *)buf) == 0) {
if(key_type == NULL || strcmp("ssh-ed25519", key_type) == 0) {
rc = gen_publickey_from_ed25519_openssh_priv_data(session,
decrypted,
method,
method_len,
pubkeydata,
pubkeydata_len,
(libssh2_ed25519_ctx**)key_ctx);
}
}
#endif
#if LIBSSH2_RSA
if(strcmp("ssh-rsa", (const char *)buf) == 0) {
if(key_type == NULL || strcmp("ssh-rsa", key_type) == 0) {
rc = gen_publickey_from_rsa_openssh_priv_data(session, decrypted,
method, method_len,
pubkeydata,
pubkeydata_len,
(libssh2_rsa_ctx**)key_ctx);
}
}
#endif
#if LIBSSH2_DSA
if(strcmp("ssh-dss", (const char *)buf) == 0) {
if(key_type == NULL || strcmp("ssh-dss", key_type) == 0) {
rc = gen_publickey_from_dsa_openssh_priv_data(session, decrypted,
method, method_len,
pubkeydata,
pubkeydata_len,
(libssh2_dsa_ctx**)key_ctx);
}
}
#endif
#if LIBSSH2_ECDSA
{
libssh2_curve_type type;
if(_libssh2_ecdsa_curve_type_from_name((const char *)buf, &type) == 0) {
if(key_type == NULL || strcmp("ssh-ecdsa", key_type) == 0) {
rc = gen_publickey_from_ecdsa_openssh_priv_data(session, type,
decrypted,
method, method_len,
pubkeydata,
pubkeydata_len,
(libssh2_ecdsa_ctx**)key_ctx);
}
}
}
#endif
if(rc == LIBSSH2_ERROR_FILE)
rc = _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to extract public key from private key file: "
"invalid/unrecognized private key file format");
if(decrypted)
_libssh2_string_buf_free(session, decrypted);
return rc;
}
int
read_openssh_private_key_from_memory(void **key_ctx, LIBSSH2_SESSION *session,
const char *key_type,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase)
{
return _libssh2_pub_priv_openssh_keyfilememory(session, key_ctx, key_type,
NULL, NULL, NULL, NULL,
filedata, filedata_len,
passphrase);
}
int
_libssh2_pub_priv_keyfilememory(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekeydata,
size_t privatekeydata_len,
const char *passphrase)
{
int st;
BIO* bp;
EVP_PKEY* pk;
int pktype;
_libssh2_debug(session,
LIBSSH2_TRACE_AUTH,
"Computing public key from private key.");
bp = BIO_new_mem_buf((char *)privatekeydata, privatekeydata_len);
if(!bp)
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory when"
"computing public key");
BIO_reset(bp);
pk = PEM_read_bio_PrivateKey(bp, NULL, NULL, (void *)passphrase);
BIO_free(bp);
if(pk == NULL) {
/* Try OpenSSH format */
st = _libssh2_pub_priv_openssh_keyfilememory(session, NULL, NULL,
method,
method_len,
pubkeydata,
pubkeydata_len,
privatekeydata,
privatekeydata_len,
(unsigned const char *)passphrase);
if(st != 0)
return st;
return 0;
}
#ifdef HAVE_OPAQUE_STRUCTS
pktype = EVP_PKEY_id(pk);
#else
pktype = pk->type;
#endif
switch(pktype) {
#if LIBSSH2_ED25519
case EVP_PKEY_ED25519 :
st = gen_publickey_from_ed_evp(
session, method, method_len, pubkeydata, pubkeydata_len, pk);
break;
#endif /* LIBSSH2_ED25519 */
case EVP_PKEY_RSA :
st = gen_publickey_from_rsa_evp(session, method, method_len,
pubkeydata, pubkeydata_len, pk);
break;
#if LIBSSH2_DSA
case EVP_PKEY_DSA :
st = gen_publickey_from_dsa_evp(session, method, method_len,
pubkeydata, pubkeydata_len, pk);
break;
#endif /* LIBSSH_DSA */
#if LIBSSH2_ECDSA
case EVP_PKEY_EC :
st = gen_publickey_from_ec_evp(session, method, method_len,
pubkeydata, pubkeydata_len, pk);
break;
#endif /* LIBSSH2_ECDSA */
default :
st = _libssh2_error(session,
LIBSSH2_ERROR_FILE,
"Unable to extract public key "
"from private key file: "
"Unsupported private key file format");
break;
}
EVP_PKEY_free(pk);
return st;
}
void
_libssh2_dh_init(_libssh2_dh_ctx *dhctx)
{
*dhctx = BN_new(); /* Random from client */
}
int
_libssh2_dh_key_pair(_libssh2_dh_ctx *dhctx, _libssh2_bn *public,
_libssh2_bn *g, _libssh2_bn *p, int group_order,
_libssh2_bn_ctx *bnctx)
{
/* Generate x and e */
BN_rand(*dhctx, group_order * 8 - 1, 0, -1);
BN_mod_exp(public, g, *dhctx, p, bnctx);
return 0;
}
int
_libssh2_dh_secret(_libssh2_dh_ctx *dhctx, _libssh2_bn *secret,
_libssh2_bn *f, _libssh2_bn *p,
_libssh2_bn_ctx *bnctx)
{
/* Compute the shared secret */
BN_mod_exp(secret, f, *dhctx, p, bnctx);
return 0;
}
void
_libssh2_dh_dtor(_libssh2_dh_ctx *dhctx)
{
BN_clear_free(*dhctx);
*dhctx = NULL;
}
#endif /* LIBSSH2_OPENSSL */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/keepalive.c | /* Copyright (C) 2010 Simon Josefsson
* Author: Simon Josefsson
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
*/
#include "libssh2_priv.h"
#include "transport.h" /* _libssh2_transport_write */
/* Keep-alive stuff. */
LIBSSH2_API void
libssh2_keepalive_config (LIBSSH2_SESSION *session,
int want_reply,
unsigned interval)
{
if(interval == 1)
session->keepalive_interval = 2;
else
session->keepalive_interval = interval;
session->keepalive_want_reply = want_reply ? 1 : 0;
}
LIBSSH2_API int
libssh2_keepalive_send (LIBSSH2_SESSION *session,
int *seconds_to_next)
{
time_t now;
if(!session->keepalive_interval) {
if(seconds_to_next)
*seconds_to_next = 0;
return 0;
}
now = time(NULL);
if(session->keepalive_last_sent + session->keepalive_interval <= now) {
/* Format is
"SSH_MSG_GLOBAL_REQUEST || 4-byte len || str || want-reply". */
unsigned char keepalive_data[]
= "\x50\x00\x00\x00\[email protected]";
size_t len = sizeof(keepalive_data) - 1;
int rc;
keepalive_data[len - 1] =
(unsigned char)session->keepalive_want_reply;
rc = _libssh2_transport_send(session, keepalive_data, len, NULL, 0);
/* Silently ignore PACKET_EAGAIN here: if the write buffer is
already full, sending another keepalive is not useful. */
if(rc && rc != LIBSSH2_ERROR_EAGAIN) {
_libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND,
"Unable to send keepalive message");
return rc;
}
session->keepalive_last_sent = now;
if(seconds_to_next)
*seconds_to_next = session->keepalive_interval;
}
else if(seconds_to_next) {
*seconds_to_next = (int) (session->keepalive_last_sent - now)
+ session->keepalive_interval;
}
return 0;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/global.c | /* Copyright (c) 2010 Lars Nordin <[email protected]>
* Copyright (C) 2010 Simon Josefsson <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
static int _libssh2_initialized = 0;
static int _libssh2_init_flags = 0;
LIBSSH2_API int
libssh2_init(int flags)
{
if(_libssh2_initialized == 0 && !(flags & LIBSSH2_INIT_NO_CRYPTO)) {
libssh2_crypto_init();
}
_libssh2_initialized++;
_libssh2_init_flags |= flags;
return 0;
}
LIBSSH2_API void
libssh2_exit(void)
{
if(_libssh2_initialized == 0)
return;
_libssh2_initialized--;
if(_libssh2_initialized == 0 &&
!(_libssh2_init_flags & LIBSSH2_INIT_NO_CRYPTO)) {
libssh2_crypto_exit();
}
return;
}
void
_libssh2_init_if_needed(void)
{
if(_libssh2_initialized == 0)
(void)libssh2_init (0);
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/blowfish.c | /* $OpenBSD: blowfish.c,v 1.18 2004/11/02 17:23:26 hshoexer Exp $ */
/*
* Blowfish block cipher for OpenBSD
* Copyright 1997 Niels Provos <[email protected]>
* All rights reserved.
*
* Implementation advice by David Mazieres <[email protected]>.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Niels Provos.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This code is derived from section 14.3 and the given source
* in section V of Applied Cryptography, second edition.
* Blowfish is an unpatented fast block cipher designed by
* Bruce Schneier.
*/
#if !defined(HAVE_BCRYPT_PBKDF) && (!defined(HAVE_BLOWFISH_INITSTATE) || \
!defined(HAVE_BLOWFISH_EXPAND0STATE) || \
!defined(HAVE_BLF_ENC))
#if 0
#include <stdio.h> /* used for debugging */
#include <string.h>
#endif
#include <sys/types.h>
#include "libssh2.h"
#include "blf.h"
#undef inline
#ifdef __GNUC__
#define inline __inline
#else /* !__GNUC__ */
#define inline
#endif /* !__GNUC__ */
/* Function for Feistel Networks */
#define F(s, x) ((((s)[ (((x)>>24)&0xFF)] \
+ (s)[0x100 + (((x)>>16)&0xFF)]) \
^ (s)[0x200 + (((x)>> 8)&0xFF)]) \
+ (s)[0x300 + ( (x) &0xFF)])
#define BLFRND(s,p,i,j,n) (i ^= F(s,j) ^ (p)[n])
void
Blowfish_encipher(blf_ctx *c, uint32_t *xl, uint32_t *xr)
{
uint32_t Xl;
uint32_t Xr;
uint32_t *s = c->S[0];
uint32_t *p = c->P;
Xl = *xl;
Xr = *xr;
Xl ^= p[0];
BLFRND(s, p, Xr, Xl, 1); BLFRND(s, p, Xl, Xr, 2);
BLFRND(s, p, Xr, Xl, 3); BLFRND(s, p, Xl, Xr, 4);
BLFRND(s, p, Xr, Xl, 5); BLFRND(s, p, Xl, Xr, 6);
BLFRND(s, p, Xr, Xl, 7); BLFRND(s, p, Xl, Xr, 8);
BLFRND(s, p, Xr, Xl, 9); BLFRND(s, p, Xl, Xr, 10);
BLFRND(s, p, Xr, Xl, 11); BLFRND(s, p, Xl, Xr, 12);
BLFRND(s, p, Xr, Xl, 13); BLFRND(s, p, Xl, Xr, 14);
BLFRND(s, p, Xr, Xl, 15); BLFRND(s, p, Xl, Xr, 16);
*xl = Xr ^ p[17];
*xr = Xl;
}
void
Blowfish_decipher(blf_ctx *c, uint32_t *xl, uint32_t *xr)
{
uint32_t Xl;
uint32_t Xr;
uint32_t *s = c->S[0];
uint32_t *p = c->P;
Xl = *xl;
Xr = *xr;
Xl ^= p[17];
BLFRND(s, p, Xr, Xl, 16); BLFRND(s, p, Xl, Xr, 15);
BLFRND(s, p, Xr, Xl, 14); BLFRND(s, p, Xl, Xr, 13);
BLFRND(s, p, Xr, Xl, 12); BLFRND(s, p, Xl, Xr, 11);
BLFRND(s, p, Xr, Xl, 10); BLFRND(s, p, Xl, Xr, 9);
BLFRND(s, p, Xr, Xl, 8); BLFRND(s, p, Xl, Xr, 7);
BLFRND(s, p, Xr, Xl, 6); BLFRND(s, p, Xl, Xr, 5);
BLFRND(s, p, Xr, Xl, 4); BLFRND(s, p, Xl, Xr, 3);
BLFRND(s, p, Xr, Xl, 2); BLFRND(s, p, Xl, Xr, 1);
*xl = Xr ^ p[0];
*xr = Xl;
}
void
Blowfish_initstate(blf_ctx *c)
{
/* P-box and S-box tables initialized with digits of Pi */
static const blf_ctx initstate =
{ {
{
0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a},
{
0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7},
{
0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0},
{
0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6}
},
{
0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
0x9216d5d9, 0x8979fb1b
} };
*c = initstate;
}
uint32_t
Blowfish_stream2word(const uint8_t *data, uint16_t databytes,
uint16_t *current)
{
uint8_t i;
uint16_t j;
uint32_t temp;
temp = 0x00000000;
j = *current;
for(i = 0; i < 4; i++, j++) {
if(j >= databytes)
j = 0;
temp = (temp << 8) | data[j];
}
*current = j;
return temp;
}
void
Blowfish_expand0state(blf_ctx *c, const uint8_t *key, uint16_t keybytes)
{
uint16_t i;
uint16_t j;
uint16_t k;
uint32_t temp;
uint32_t datal;
uint32_t datar;
j = 0;
for(i = 0; i < BLF_N + 2; i++) {
/* Extract 4 int8 to 1 int32 from keystream */
temp = Blowfish_stream2word(key, keybytes, &j);
c->P[i] = c->P[i] ^ temp;
}
j = 0;
datal = 0x00000000;
datar = 0x00000000;
for(i = 0; i < BLF_N + 2; i += 2) {
Blowfish_encipher(c, &datal, &datar);
c->P[i] = datal;
c->P[i + 1] = datar;
}
for(i = 0; i < 4; i++) {
for(k = 0; k < 256; k += 2) {
Blowfish_encipher(c, &datal, &datar);
c->S[i][k] = datal;
c->S[i][k + 1] = datar;
}
}
}
void
Blowfish_expandstate(blf_ctx *c, const uint8_t *data, uint16_t databytes,
const uint8_t *key, uint16_t keybytes)
{
uint16_t i;
uint16_t j;
uint16_t k;
uint32_t temp;
uint32_t datal;
uint32_t datar;
j = 0;
for(i = 0; i < BLF_N + 2; i++) {
/* Extract 4 int8 to 1 int32 from keystream */
temp = Blowfish_stream2word(key, keybytes, &j);
c->P[i] = c->P[i] ^ temp;
}
j = 0;
datal = 0x00000000;
datar = 0x00000000;
for(i = 0; i < BLF_N + 2; i += 2) {
datal ^= Blowfish_stream2word(data, databytes, &j);
datar ^= Blowfish_stream2word(data, databytes, &j);
Blowfish_encipher(c, &datal, &datar);
c->P[i] = datal;
c->P[i + 1] = datar;
}
for(i = 0; i < 4; i++) {
for(k = 0; k < 256; k += 2) {
datal ^= Blowfish_stream2word(data, databytes, &j);
datar ^= Blowfish_stream2word(data, databytes, &j);
Blowfish_encipher(c, &datal, &datar);
c->S[i][k] = datal;
c->S[i][k + 1] = datar;
}
}
}
void
blf_key(blf_ctx *c, const uint8_t *k, uint16_t len)
{
/* Initialize S-boxes and subkeys with Pi */
Blowfish_initstate(c);
/* Transform S-boxes and subkeys with key */
Blowfish_expand0state(c, k, len);
}
void
blf_enc(blf_ctx *c, uint32_t *data, uint16_t blocks)
{
uint32_t *d;
uint16_t i;
d = data;
for(i = 0; i < blocks; i++) {
Blowfish_encipher(c, d, d + 1);
d += 2;
}
}
void
blf_dec(blf_ctx *c, uint32_t *data, uint16_t blocks)
{
uint32_t *d;
uint16_t i;
d = data;
for(i = 0; i < blocks; i++) {
Blowfish_decipher(c, d, d + 1);
d += 2;
}
}
void
blf_ecb_encrypt(blf_ctx *c, uint8_t *data, uint32_t len)
{
uint32_t l, r;
uint32_t i;
for(i = 0; i < len; i += 8) {
l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
Blowfish_encipher(c, &l, &r);
data[0] = l >> 24 & 0xff;
data[1] = l >> 16 & 0xff;
data[2] = l >> 8 & 0xff;
data[3] = l & 0xff;
data[4] = r >> 24 & 0xff;
data[5] = r >> 16 & 0xff;
data[6] = r >> 8 & 0xff;
data[7] = r & 0xff;
data += 8;
}
}
void
blf_ecb_decrypt(blf_ctx *c, uint8_t *data, uint32_t len)
{
uint32_t l, r;
uint32_t i;
for(i = 0; i < len; i += 8) {
l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
Blowfish_decipher(c, &l, &r);
data[0] = l >> 24 & 0xff;
data[1] = l >> 16 & 0xff;
data[2] = l >> 8 & 0xff;
data[3] = l & 0xff;
data[4] = r >> 24 & 0xff;
data[5] = r >> 16 & 0xff;
data[6] = r >> 8 & 0xff;
data[7] = r & 0xff;
data += 8;
}
}
void
blf_cbc_encrypt(blf_ctx *c, uint8_t *iv, uint8_t *data, uint32_t len)
{
uint32_t l, r;
uint32_t i, j;
for(i = 0; i < len; i += 8) {
for(j = 0; j < 8; j++)
data[j] ^= iv[j];
l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
Blowfish_encipher(c, &l, &r);
data[0] = l >> 24 & 0xff;
data[1] = l >> 16 & 0xff;
data[2] = l >> 8 & 0xff;
data[3] = l & 0xff;
data[4] = r >> 24 & 0xff;
data[5] = r >> 16 & 0xff;
data[6] = r >> 8 & 0xff;
data[7] = r & 0xff;
iv = data;
data += 8;
}
}
void
blf_cbc_decrypt(blf_ctx *c, uint8_t *iva, uint8_t *data, uint32_t len)
{
uint32_t l, r;
uint8_t *iv;
uint32_t i, j;
iv = data + len - 16;
data = data + len - 8;
for(i = len - 8; i >= 8; i -= 8) {
l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
Blowfish_decipher(c, &l, &r);
data[0] = l >> 24 & 0xff;
data[1] = l >> 16 & 0xff;
data[2] = l >> 8 & 0xff;
data[3] = l & 0xff;
data[4] = r >> 24 & 0xff;
data[5] = r >> 16 & 0xff;
data[6] = r >> 8 & 0xff;
data[7] = r & 0xff;
for(j = 0; j < 8; j++)
data[j] ^= iv[j];
iv -= 8;
data -= 8;
}
l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
Blowfish_decipher(c, &l, &r);
data[0] = l >> 24 & 0xff;
data[1] = l >> 16 & 0xff;
data[2] = l >> 8 & 0xff;
data[3] = l & 0xff;
data[4] = r >> 24 & 0xff;
data[5] = r >> 16 & 0xff;
data[6] = r >> 8 & 0xff;
data[7] = r & 0xff;
for(j = 0; j < 8; j++)
data[j] ^= iva[j];
}
#if 0
void
report(uint32_t data[], uint16_t len)
{
uint16_t i;
for(i = 0; i < len; i += 2)
printf("Block %0hd: %08lx %08lx.\n",
i / 2, data[i], data[i + 1]);
}
void
main(void)
{
blf_ctx c;
char key[] = "AAAAA";
char key2[] = "abcdefghijklmnopqrstuvwxyz";
uint32_t data[10];
uint32_t data2[] =
{0x424c4f57l, 0x46495348l};
uint16_t i;
/* First test */
for(i = 0; i < 10; i++)
data[i] = i;
blf_key(&c, (uint8_t *) key, 5);
blf_enc(&c, data, 5);
blf_dec(&c, data, 1);
blf_dec(&c, data + 2, 4);
printf("Should read as 0 - 9.\n");
report(data, 10);
/* Second test */
blf_key(&c, (uint8_t *) key2, strlen(key2));
blf_enc(&c, data2, 1);
printf("\nShould read as: 0x324ed0fe 0xf413a203.\n");
report(data2, 2);
blf_dec(&c, data2, 1);
report(data2, 2);
}
#endif
#endif /* !defined(HAVE_BCRYPT_PBKDF) && \
(!defined(HAVE_BLOWFISH_INITSTATE) || \
!defined(HAVE_BLOWFISH_EXPAND0STATE) || \
'!defined(HAVE_BLF_ENC)) */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/misc.h | #ifndef __LIBSSH2_MISC_H
#define __LIBSSH2_MISC_H
/* Copyright (c) 2009-2019 by Daniel Stenberg
*
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
struct list_head {
struct list_node *last;
struct list_node *first;
};
struct list_node {
struct list_node *next;
struct list_node *prev;
struct list_head *head;
};
struct string_buf {
unsigned char *data;
unsigned char *dataptr;
size_t len;
};
int _libssh2_error_flags(LIBSSH2_SESSION* session, int errcode,
const char *errmsg, int errflags);
int _libssh2_error(LIBSSH2_SESSION* session, int errcode, const char *errmsg);
void _libssh2_list_init(struct list_head *head);
/* add a node last in the list */
void _libssh2_list_add(struct list_head *head,
struct list_node *entry);
/* return the "first" node in the list this head points to */
void *_libssh2_list_first(struct list_head *head);
/* return the next node in the list */
void *_libssh2_list_next(struct list_node *node);
/* return the prev node in the list */
void *_libssh2_list_prev(struct list_node *node);
/* remove this node from the list */
void _libssh2_list_remove(struct list_node *entry);
size_t _libssh2_base64_encode(LIBSSH2_SESSION *session,
const char *inp, size_t insize, char **outptr);
unsigned int _libssh2_ntohu32(const unsigned char *buf);
libssh2_uint64_t _libssh2_ntohu64(const unsigned char *buf);
void _libssh2_htonu32(unsigned char *buf, uint32_t val);
void _libssh2_store_u32(unsigned char **buf, uint32_t value);
void _libssh2_store_str(unsigned char **buf, const char *str, size_t len);
void *_libssh2_calloc(LIBSSH2_SESSION *session, size_t size);
void _libssh2_explicit_zero(void *buf, size_t size);
struct string_buf* _libssh2_string_buf_new(LIBSSH2_SESSION *session);
void _libssh2_string_buf_free(LIBSSH2_SESSION *session,
struct string_buf *buf);
int _libssh2_get_u32(struct string_buf *buf, uint32_t *out);
int _libssh2_get_u64(struct string_buf *buf, libssh2_uint64_t *out);
int _libssh2_match_string(struct string_buf *buf, const char *match);
int _libssh2_get_string(struct string_buf *buf, unsigned char **outbuf,
size_t *outlen);
int _libssh2_copy_string(LIBSSH2_SESSION* session, struct string_buf *buf,
unsigned char **outbuf, size_t *outlen);
int _libssh2_get_bignum_bytes(struct string_buf *buf, unsigned char **outbuf,
size_t *outlen);
int _libssh2_check_length(struct string_buf *buf, size_t requested_len);
#if defined(LIBSSH2_WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
/* provide a private one */
#undef HAVE_GETTIMEOFDAY
int __cdecl _libssh2_gettimeofday(struct timeval *tp, void *tzp);
#define HAVE_LIBSSH2_GETTIMEOFDAY
#define LIBSSH2_GETTIMEOFDAY_WIN32 /* enable the win32 implementation */
#else
#ifdef HAVE_GETTIMEOFDAY
#define _libssh2_gettimeofday(x,y) gettimeofday(x,y)
#define HAVE_LIBSSH2_GETTIMEOFDAY
#endif
#endif
void _libssh2_xor_data(unsigned char *output,
const unsigned char *input1,
const unsigned char *input2,
size_t length);
void _libssh2_aes_ctr_increment(unsigned char *ctr, size_t length);
#endif /* _LIBSSH2_MISC_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/crypto.h | #ifndef __LIBSSH2_CRYPTO_H
#define __LIBSSH2_CRYPTO_H
/* Copyright (C) 2009, 2010 Simon Josefsson
* Copyright (C) 2006, 2007 The Written Word, Inc. All rights reserved.
* Copyright (C) 2010-2019 Daniel Stenberg
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#ifdef LIBSSH2_OPENSSL
#include "openssl.h"
#endif
#ifdef LIBSSH2_LIBGCRYPT
#include "libgcrypt.h"
#endif
#ifdef LIBSSH2_WINCNG
#include "wincng.h"
#endif
#ifdef LIBSSH2_OS400QC3
#include "os400qc3.h"
#endif
#ifdef LIBSSH2_MBEDTLS
#include "mbedtls.h"
#endif
#define LIBSSH2_ED25519_KEY_LEN 32
#define LIBSSH2_ED25519_PRIVATE_KEY_LEN 64
#define LIBSSH2_ED25519_SIG_LEN 64
#if LIBSSH2_RSA
int _libssh2_rsa_new(libssh2_rsa_ctx ** rsa,
const unsigned char *edata,
unsigned long elen,
const unsigned char *ndata,
unsigned long nlen,
const unsigned char *ddata,
unsigned long dlen,
const unsigned char *pdata,
unsigned long plen,
const unsigned char *qdata,
unsigned long qlen,
const unsigned char *e1data,
unsigned long e1len,
const unsigned char *e2data,
unsigned long e2len,
const unsigned char *coeffdata, unsigned long coefflen);
int _libssh2_rsa_new_private(libssh2_rsa_ctx ** rsa,
LIBSSH2_SESSION * session,
const char *filename,
unsigned const char *passphrase);
int _libssh2_rsa_sha1_verify(libssh2_rsa_ctx * rsa,
const unsigned char *sig,
unsigned long sig_len,
const unsigned char *m, unsigned long m_len);
int _libssh2_rsa_sha1_sign(LIBSSH2_SESSION * session,
libssh2_rsa_ctx * rsactx,
const unsigned char *hash,
size_t hash_len,
unsigned char **signature,
size_t *signature_len);
int _libssh2_rsa_new_private_frommemory(libssh2_rsa_ctx ** rsa,
LIBSSH2_SESSION * session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
#endif
#if LIBSSH2_DSA
int _libssh2_dsa_new(libssh2_dsa_ctx ** dsa,
const unsigned char *pdata,
unsigned long plen,
const unsigned char *qdata,
unsigned long qlen,
const unsigned char *gdata,
unsigned long glen,
const unsigned char *ydata,
unsigned long ylen,
const unsigned char *x, unsigned long x_len);
int _libssh2_dsa_new_private(libssh2_dsa_ctx ** dsa,
LIBSSH2_SESSION * session,
const char *filename,
unsigned const char *passphrase);
int _libssh2_dsa_sha1_verify(libssh2_dsa_ctx * dsactx,
const unsigned char *sig,
const unsigned char *m, unsigned long m_len);
int _libssh2_dsa_sha1_sign(libssh2_dsa_ctx * dsactx,
const unsigned char *hash,
unsigned long hash_len, unsigned char *sig);
int _libssh2_dsa_new_private_frommemory(libssh2_dsa_ctx ** dsa,
LIBSSH2_SESSION * session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
#endif
#if LIBSSH2_ECDSA
int
_libssh2_ecdsa_curve_name_with_octal_new(libssh2_ecdsa_ctx ** ecdsactx,
const unsigned char *k,
size_t k_len,
libssh2_curve_type type);
int
_libssh2_ecdsa_new_private(libssh2_ecdsa_ctx ** ec_ctx,
LIBSSH2_SESSION * session,
const char *filename,
unsigned const char *passphrase);
int
_libssh2_ecdsa_verify(libssh2_ecdsa_ctx * ctx,
const unsigned char *r, size_t r_len,
const unsigned char *s, size_t s_len,
const unsigned char *m, size_t m_len);
int
_libssh2_ecdsa_create_key(LIBSSH2_SESSION *session,
_libssh2_ec_key **out_private_key,
unsigned char **out_public_key_octal,
size_t *out_public_key_octal_len,
libssh2_curve_type curve_type);
int
_libssh2_ecdh_gen_k(_libssh2_bn **k, _libssh2_ec_key *private_key,
const unsigned char *server_public_key,
size_t server_public_key_len);
int
_libssh2_ecdsa_sign(LIBSSH2_SESSION *session, libssh2_ecdsa_ctx *ec_ctx,
const unsigned char *hash, unsigned long hash_len,
unsigned char **signature, size_t *signature_len);
int _libssh2_ecdsa_new_private_frommemory(libssh2_ecdsa_ctx ** ec_ctx,
LIBSSH2_SESSION * session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
libssh2_curve_type
_libssh2_ecdsa_get_curve_type(libssh2_ecdsa_ctx *ec_ctx);
int
_libssh2_ecdsa_curve_type_from_name(const char *name,
libssh2_curve_type *out_type);
#endif /* LIBSSH2_ECDSA */
#if LIBSSH2_ED25519
int
_libssh2_curve25519_new(LIBSSH2_SESSION *session, uint8_t **out_public_key,
uint8_t **out_private_key);
int
_libssh2_curve25519_gen_k(_libssh2_bn **k,
uint8_t private_key[LIBSSH2_ED25519_KEY_LEN],
uint8_t server_public_key[LIBSSH2_ED25519_KEY_LEN]);
int
_libssh2_ed25519_verify(libssh2_ed25519_ctx *ctx, const uint8_t *s,
size_t s_len, const uint8_t *m, size_t m_len);
int
_libssh2_ed25519_new_private(libssh2_ed25519_ctx **ed_ctx,
LIBSSH2_SESSION *session,
const char *filename, const uint8_t *passphrase);
int
_libssh2_ed25519_new_public(libssh2_ed25519_ctx **ed_ctx,
LIBSSH2_SESSION *session,
const unsigned char *raw_pub_key,
const uint8_t key_len);
int
_libssh2_ed25519_sign(libssh2_ed25519_ctx *ctx, LIBSSH2_SESSION *session,
uint8_t **out_sig, size_t *out_sig_len,
const uint8_t *message, size_t message_len);
int
_libssh2_ed25519_new_private_frommemory(libssh2_ed25519_ctx **ed_ctx,
LIBSSH2_SESSION *session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
#endif /* LIBSSH2_ED25519 */
int _libssh2_cipher_init(_libssh2_cipher_ctx * h,
_libssh2_cipher_type(algo),
unsigned char *iv,
unsigned char *secret, int encrypt);
int _libssh2_cipher_crypt(_libssh2_cipher_ctx * ctx,
_libssh2_cipher_type(algo),
int encrypt, unsigned char *block, size_t blocksize);
int _libssh2_pub_priv_keyfile(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekey,
const char *passphrase);
int _libssh2_pub_priv_keyfilememory(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekeydata,
size_t privatekeydata_len,
const char *passphrase);
#endif /* __LIBSSH2_CRYPTO_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/transport.h | #ifndef __LIBSSH2_TRANSPORT_H
#define __LIBSSH2_TRANSPORT_H
/* Copyright (C) 2007 The Written Word, Inc. All rights reserved.
* Copyright (C) 2009-2010 by Daniel Stenberg
* Author: Daniel Stenberg <[email protected]>
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file handles reading and writing to the SECSH transport layer. RFC4253.
*/
#include "libssh2_priv.h"
#include "packet.h"
/*
* libssh2_transport_send
*
* Send a packet, encrypting it and adding a MAC code if necessary
* Returns 0 on success, non-zero on failure.
*
* The data is provided as _two_ data areas that are combined by this
* function. The 'data' part is sent immediately before 'data2'. 'data2' can
* be set to NULL (or data2_len to 0) to only use a single part.
*
* Returns LIBSSH2_ERROR_EAGAIN if it would block or if the whole packet was
* not sent yet. If it does so, the caller should call this function again as
* soon as it is likely that more data can be sent, and this function MUST
* then be called with the same argument set (same data pointer and same
* data_len) until ERROR_NONE or failure is returned.
*
* This function DOES NOT call _libssh2_error() on any errors.
*/
int _libssh2_transport_send(LIBSSH2_SESSION *session,
const unsigned char *data, size_t data_len,
const unsigned char *data2, size_t data2_len);
/*
* _libssh2_transport_read
*
* Collect a packet into the input brigade block only controls whether or not
* to wait for a packet to start.
*
* Returns packet type added to input brigade (PACKET_NONE if nothing added),
* or PACKET_FAIL on failure and PACKET_EAGAIN if it couldn't process a full
* packet.
*/
/*
* This function reads the binary stream as specified in chapter 6 of RFC4253
* "The Secure Shell (SSH) Transport Layer Protocol"
*/
int _libssh2_transport_read(LIBSSH2_SESSION * session);
#endif /* __LIBSSH2_TRANSPORT_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/libgcrypt.h | #ifndef __LIBSSH2_LIBGCRYPT_H
#define __LIBSSH2_LIBGCRYPT_H
/*
* Copyright (C) 2008, 2009, 2010 Simon Josefsson
* Copyright (C) 2006, 2007, The Written Word, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include <gcrypt.h>
#define LIBSSH2_MD5 1
#define LIBSSH2_HMAC_RIPEMD 1
#define LIBSSH2_HMAC_SHA256 1
#define LIBSSH2_HMAC_SHA512 1
#define LIBSSH2_AES 1
#define LIBSSH2_AES_CTR 1
#define LIBSSH2_BLOWFISH 1
#define LIBSSH2_RC4 1
#define LIBSSH2_CAST 1
#define LIBSSH2_3DES 1
#define LIBSSH2_RSA 1
#define LIBSSH2_DSA 1
#define LIBSSH2_ECDSA 0
#define LIBSSH2_ED25519 0
#define MD5_DIGEST_LENGTH 16
#define SHA_DIGEST_LENGTH 20
#define SHA256_DIGEST_LENGTH 32
#define SHA384_DIGEST_LENGTH 48
#define SHA512_DIGEST_LENGTH 64
#define EC_MAX_POINT_LEN ((528 * 2 / 8) + 1)
#define _libssh2_random(buf, len) \
(gcry_randomize ((buf), (len), GCRY_STRONG_RANDOM), 0)
#define libssh2_prepare_iovec(vec, len) /* Empty. */
#define libssh2_sha1_ctx gcry_md_hd_t
/* returns 0 in case of failure */
#define libssh2_sha1_init(ctx) \
(GPG_ERR_NO_ERROR == gcry_md_open(ctx, GCRY_MD_SHA1, 0))
#define libssh2_sha1_update(ctx, data, len) \
gcry_md_write(ctx, (unsigned char *) data, len)
#define libssh2_sha1_final(ctx, out) \
memcpy(out, gcry_md_read(ctx, 0), SHA_DIGEST_LENGTH), gcry_md_close(ctx)
#define libssh2_sha1(message, len, out) \
gcry_md_hash_buffer(GCRY_MD_SHA1, out, message, len)
#define libssh2_sha256_ctx gcry_md_hd_t
#define libssh2_sha256_init(ctx) \
(GPG_ERR_NO_ERROR == gcry_md_open(ctx, GCRY_MD_SHA256, 0))
#define libssh2_sha256_update(ctx, data, len) \
gcry_md_write(ctx, (unsigned char *) data, len)
#define libssh2_sha256_final(ctx, out) \
memcpy(out, gcry_md_read(ctx, 0), SHA256_DIGEST_LENGTH), gcry_md_close(ctx)
#define libssh2_sha256(message, len, out) \
gcry_md_hash_buffer(GCRY_MD_SHA256, out, message, len)
#define libssh2_sha384_ctx gcry_md_hd_t
#define libssh2_sha384_init(ctx) \
(GPG_ERR_NO_ERROR == gcry_md_open(ctx, GCRY_MD_SHA384, 0))
#define libssh2_sha384_update(ctx, data, len) \
gcry_md_write(ctx, (unsigned char *) data, len)
#define libssh2_sha384_final(ctx, out) \
memcpy(out, gcry_md_read(ctx, 0), SHA384_DIGEST_LENGTH), gcry_md_close(ctx)
#define libssh2_sha384(message, len, out) \
gcry_md_hash_buffer(GCRY_MD_SHA384, out, message, len)
#define libssh2_sha512_ctx gcry_md_hd_t
#define libssh2_sha512_init(ctx) \
(GPG_ERR_NO_ERROR == gcry_md_open(ctx, GCRY_MD_SHA512, 0))
#define libssh2_sha512_update(ctx, data, len) \
gcry_md_write(ctx, (unsigned char *) data, len)
#define libssh2_sha512_final(ctx, out) \
memcpy(out, gcry_md_read(ctx, 0), SHA512_DIGEST_LENGTH), gcry_md_close(ctx)
#define libssh2_sha512(message, len, out) \
gcry_md_hash_buffer(GCRY_MD_SHA512, out, message, len)
#define libssh2_md5_ctx gcry_md_hd_t
/* returns 0 in case of failure */
#define libssh2_md5_init(ctx) \
(GPG_ERR_NO_ERROR == gcry_md_open(ctx, GCRY_MD_MD5, 0))
#define libssh2_md5_update(ctx, data, len) \
gcry_md_write(ctx, (unsigned char *) data, len)
#define libssh2_md5_final(ctx, out) \
memcpy(out, gcry_md_read(ctx, 0), MD5_DIGEST_LENGTH), gcry_md_close(ctx)
#define libssh2_md5(message, len, out) \
gcry_md_hash_buffer(GCRY_MD_MD5, out, message, len)
#define libssh2_hmac_ctx gcry_md_hd_t
#define libssh2_hmac_ctx_init(ctx)
#define libssh2_hmac_sha1_init(ctx, key, keylen) \
gcry_md_open(ctx, GCRY_MD_SHA1, GCRY_MD_FLAG_HMAC), \
gcry_md_setkey(*ctx, key, keylen)
#define libssh2_hmac_md5_init(ctx, key, keylen) \
gcry_md_open(ctx, GCRY_MD_MD5, GCRY_MD_FLAG_HMAC), \
gcry_md_setkey(*ctx, key, keylen)
#define libssh2_hmac_ripemd160_init(ctx, key, keylen) \
gcry_md_open(ctx, GCRY_MD_RMD160, GCRY_MD_FLAG_HMAC), \
gcry_md_setkey(*ctx, key, keylen)
#define libssh2_hmac_sha256_init(ctx, key, keylen) \
gcry_md_open(ctx, GCRY_MD_SHA256, GCRY_MD_FLAG_HMAC), \
gcry_md_setkey(*ctx, key, keylen)
#define libssh2_hmac_sha512_init(ctx, key, keylen) \
gcry_md_open(ctx, GCRY_MD_SHA512, GCRY_MD_FLAG_HMAC), \
gcry_md_setkey(*ctx, key, keylen)
#define libssh2_hmac_update(ctx, data, datalen) \
gcry_md_write(ctx, (unsigned char *) data, datalen)
#define libssh2_hmac_final(ctx, data) \
memcpy(data, gcry_md_read(ctx, 0), \
gcry_md_get_algo_dlen(gcry_md_get_algo(ctx)))
#define libssh2_hmac_cleanup(ctx) gcry_md_close (*ctx);
#define libssh2_crypto_init() gcry_control (GCRYCTL_DISABLE_SECMEM)
#define libssh2_crypto_exit()
#define libssh2_rsa_ctx struct gcry_sexp
#define _libssh2_rsa_free(rsactx) gcry_sexp_release (rsactx)
#define libssh2_dsa_ctx struct gcry_sexp
#define _libssh2_dsa_free(dsactx) gcry_sexp_release (dsactx)
#if LIBSSH2_ECDSA
#else
#define _libssh2_ec_key void
#endif
#define _libssh2_cipher_type(name) int name
#define _libssh2_cipher_ctx gcry_cipher_hd_t
#define _libssh2_gcry_ciphermode(c,m) ((c << 8) | m)
#define _libssh2_gcry_cipher(c) (c >> 8)
#define _libssh2_gcry_mode(m) (m & 0xFF)
#define _libssh2_cipher_aes256ctr \
_libssh2_gcry_ciphermode(GCRY_CIPHER_AES256, GCRY_CIPHER_MODE_CTR)
#define _libssh2_cipher_aes192ctr \
_libssh2_gcry_ciphermode(GCRY_CIPHER_AES192, GCRY_CIPHER_MODE_CTR)
#define _libssh2_cipher_aes128ctr \
_libssh2_gcry_ciphermode(GCRY_CIPHER_AES128, GCRY_CIPHER_MODE_CTR)
#define _libssh2_cipher_aes256 \
_libssh2_gcry_ciphermode(GCRY_CIPHER_AES256, GCRY_CIPHER_MODE_CBC)
#define _libssh2_cipher_aes192 \
_libssh2_gcry_ciphermode(GCRY_CIPHER_AES192, GCRY_CIPHER_MODE_CBC)
#define _libssh2_cipher_aes128 \
_libssh2_gcry_ciphermode(GCRY_CIPHER_AES128, GCRY_CIPHER_MODE_CBC)
#define _libssh2_cipher_blowfish \
_libssh2_gcry_ciphermode(GCRY_CIPHER_BLOWFISH, GCRY_CIPHER_MODE_CBC)
#define _libssh2_cipher_arcfour \
_libssh2_gcry_ciphermode(GCRY_CIPHER_ARCFOUR, GCRY_CIPHER_MODE_STREAM)
#define _libssh2_cipher_cast5 \
_libssh2_gcry_ciphermode(GCRY_CIPHER_CAST5, GCRY_CIPHER_MODE_CBC)
#define _libssh2_cipher_3des \
_libssh2_gcry_ciphermode(GCRY_CIPHER_3DES, GCRY_CIPHER_MODE_CBC)
#define _libssh2_cipher_dtor(ctx) gcry_cipher_close(*(ctx))
#define _libssh2_bn struct gcry_mpi
#define _libssh2_bn_ctx int
#define _libssh2_bn_ctx_new() 0
#define _libssh2_bn_ctx_free(bnctx) ((void)0)
#define _libssh2_bn_init() gcry_mpi_new(0)
#define _libssh2_bn_init_from_bin() NULL /* because gcry_mpi_scan() creates a
new bignum */
#define _libssh2_bn_set_word(bn, val) gcry_mpi_set_ui(bn, val)
#define _libssh2_bn_from_bin(bn, len, val) \
gcry_mpi_scan(&((bn)), GCRYMPI_FMT_USG, val, len, NULL)
#define _libssh2_bn_to_bin(bn, val) \
gcry_mpi_print(GCRYMPI_FMT_USG, val, _libssh2_bn_bytes(bn), NULL, bn)
#define _libssh2_bn_bytes(bn) \
(gcry_mpi_get_nbits (bn) / 8 + \
((gcry_mpi_get_nbits (bn) % 8 == 0) ? 0 : 1))
#define _libssh2_bn_bits(bn) gcry_mpi_get_nbits (bn)
#define _libssh2_bn_free(bn) gcry_mpi_release(bn)
#define _libssh2_dh_ctx struct gcry_mpi *
#define libssh2_dh_init(dhctx) _libssh2_dh_init(dhctx)
#define libssh2_dh_key_pair(dhctx, public, g, p, group_order, bnctx) \
_libssh2_dh_key_pair(dhctx, public, g, p, group_order)
#define libssh2_dh_secret(dhctx, secret, f, p, bnctx) \
_libssh2_dh_secret(dhctx, secret, f, p)
#define libssh2_dh_dtor(dhctx) _libssh2_dh_dtor(dhctx)
extern void _libssh2_dh_init(_libssh2_dh_ctx *dhctx);
extern int _libssh2_dh_key_pair(_libssh2_dh_ctx *dhctx, _libssh2_bn *public,
_libssh2_bn *g, _libssh2_bn *p,
int group_order);
extern int _libssh2_dh_secret(_libssh2_dh_ctx *dhctx, _libssh2_bn *secret,
_libssh2_bn *f, _libssh2_bn *p);
extern void _libssh2_dh_dtor(_libssh2_dh_ctx *dhctx);
#endif /* __LIBSSH2_LIBGCRYPT_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/agent.h | #ifndef __LIBSSH2_AGENT_H
#define __LIBSSH2_AGENT_H
/*
* Copyright (c) 2009 by Daiki Ueno
* Copyright (C) 2010-2014 by Daniel Stenberg
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include "misc.h"
#include "session.h"
#ifdef WIN32
#include <stdlib.h>
#endif
/* non-blocking mode on agent connection is not yet implemented, but
for future use. */
typedef enum {
agent_NB_state_init = 0,
agent_NB_state_request_created,
agent_NB_state_request_length_sent,
agent_NB_state_request_sent,
agent_NB_state_response_length_received,
agent_NB_state_response_received
} agent_nonblocking_states;
typedef struct agent_transaction_ctx {
unsigned char *request;
size_t request_len;
unsigned char *response;
size_t response_len;
agent_nonblocking_states state;
size_t send_recv_total;
} *agent_transaction_ctx_t;
typedef int (*agent_connect_func)(LIBSSH2_AGENT *agent);
typedef int (*agent_transact_func)(LIBSSH2_AGENT *agent,
agent_transaction_ctx_t transctx);
typedef int (*agent_disconnect_func)(LIBSSH2_AGENT *agent);
struct agent_publickey {
struct list_node node;
/* this is the struct we expose externally */
struct libssh2_agent_publickey external;
};
struct agent_ops {
agent_connect_func connect;
agent_transact_func transact;
agent_disconnect_func disconnect;
};
struct _LIBSSH2_AGENT
{
LIBSSH2_SESSION *session; /* the session this "belongs to" */
libssh2_socket_t fd;
struct agent_ops *ops;
struct agent_transaction_ctx transctx;
struct agent_publickey *identity;
struct list_head head; /* list of public keys */
char *identity_agent_path; /* Path to a custom identity agent socket */
#ifdef WIN32
OVERLAPPED overlapped;
HANDLE pipe;
BOOL pending_io;
#endif
};
#ifdef WIN32
extern struct agent_ops agent_ops_openssh;
#endif
#endif /* __LIBSSH2_AGENT_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/userauth.h | #ifndef __LIBSSH2_USERAUTH_H
#define __LIBSSH2_USERAUTH_H
/* Copyright (c) 2004-2007, Sara Golemon <[email protected]>
* Copyright (c) 2009-2010 by Daniel Stenberg
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
int
_libssh2_userauth_publickey(LIBSSH2_SESSION *session,
const char *username,
unsigned int username_len,
const unsigned char *pubkeydata,
unsigned long pubkeydata_len,
LIBSSH2_USERAUTH_PUBLICKEY_SIGN_FUNC
((*sign_callback)),
void *abstract);
#endif /* __LIBSSH2_USERAUTH_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/hostkey.c | /* Copyright (c) 2004-2006, Sara Golemon <[email protected]>
* Copyright (c) 2009-2019 by Daniel Stenberg
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include "misc.h"
/* Needed for struct iovec on some platforms */
#ifdef HAVE_SYS_UIO_H
#include <sys/uio.h>
#endif
#if LIBSSH2_RSA
/* ***********
* ssh-rsa *
*********** */
static int hostkey_method_ssh_rsa_dtor(LIBSSH2_SESSION * session,
void **abstract);
/*
* hostkey_method_ssh_rsa_init
*
* Initialize the server hostkey working area with e/n pair
*/
static int
hostkey_method_ssh_rsa_init(LIBSSH2_SESSION * session,
const unsigned char *hostkey_data,
size_t hostkey_data_len,
void **abstract)
{
libssh2_rsa_ctx *rsactx;
unsigned char *e, *n;
size_t e_len, n_len;
struct string_buf buf;
if(*abstract) {
hostkey_method_ssh_rsa_dtor(session, abstract);
*abstract = NULL;
}
if(hostkey_data_len < 19) {
_libssh2_debug(session, LIBSSH2_TRACE_ERROR,
"host key length too short");
return -1;
}
buf.data = (unsigned char *)hostkey_data;
buf.dataptr = buf.data;
buf.len = hostkey_data_len;
if(_libssh2_match_string(&buf, "ssh-rsa"))
return -1;
if(_libssh2_get_string(&buf, &e, &e_len))
return -1;
if(_libssh2_get_string(&buf, &n, &n_len))
return -1;
if(_libssh2_rsa_new(&rsactx, e, e_len, n, n_len, NULL, 0,
NULL, 0, NULL, 0, NULL, 0, NULL, 0, NULL, 0)) {
return -1;
}
*abstract = rsactx;
return 0;
}
/*
* hostkey_method_ssh_rsa_initPEM
*
* Load a Private Key from a PEM file
*/
static int
hostkey_method_ssh_rsa_initPEM(LIBSSH2_SESSION * session,
const char *privkeyfile,
unsigned const char *passphrase,
void **abstract)
{
libssh2_rsa_ctx *rsactx;
int ret;
if(*abstract) {
hostkey_method_ssh_rsa_dtor(session, abstract);
*abstract = NULL;
}
ret = _libssh2_rsa_new_private(&rsactx, session, privkeyfile, passphrase);
if(ret) {
return -1;
}
*abstract = rsactx;
return 0;
}
/*
* hostkey_method_ssh_rsa_initPEMFromMemory
*
* Load a Private Key from a memory
*/
static int
hostkey_method_ssh_rsa_initPEMFromMemory(LIBSSH2_SESSION * session,
const char *privkeyfiledata,
size_t privkeyfiledata_len,
unsigned const char *passphrase,
void **abstract)
{
libssh2_rsa_ctx *rsactx;
int ret;
if(*abstract) {
hostkey_method_ssh_rsa_dtor(session, abstract);
*abstract = NULL;
}
ret = _libssh2_rsa_new_private_frommemory(&rsactx, session,
privkeyfiledata,
privkeyfiledata_len, passphrase);
if(ret) {
return -1;
}
*abstract = rsactx;
return 0;
}
/*
* hostkey_method_ssh_rsa_sign
*
* Verify signature created by remote
*/
static int
hostkey_method_ssh_rsa_sig_verify(LIBSSH2_SESSION * session,
const unsigned char *sig,
size_t sig_len,
const unsigned char *m,
size_t m_len, void **abstract)
{
libssh2_rsa_ctx *rsactx = (libssh2_rsa_ctx *) (*abstract);
(void) session;
/* Skip past keyname_len(4) + keyname(7){"ssh-rsa"} + signature_len(4) */
if(sig_len < 15)
return -1;
sig += 15;
sig_len -= 15;
return _libssh2_rsa_sha1_verify(rsactx, sig, sig_len, m, m_len);
}
/*
* hostkey_method_ssh_rsa_signv
*
* Construct a signature from an array of vectors
*/
static int
hostkey_method_ssh_rsa_signv(LIBSSH2_SESSION * session,
unsigned char **signature,
size_t *signature_len,
int veccount,
const struct iovec datavec[],
void **abstract)
{
libssh2_rsa_ctx *rsactx = (libssh2_rsa_ctx *) (*abstract);
#ifdef _libssh2_rsa_sha1_signv
return _libssh2_rsa_sha1_signv(session, signature, signature_len,
veccount, datavec, rsactx);
#else
int ret;
int i;
unsigned char hash[SHA_DIGEST_LENGTH];
libssh2_sha1_ctx ctx;
(void)libssh2_sha1_init(&ctx);
for(i = 0; i < veccount; i++) {
libssh2_sha1_update(ctx, datavec[i].iov_base, datavec[i].iov_len);
}
libssh2_sha1_final(ctx, hash);
ret = _libssh2_rsa_sha1_sign(session, rsactx, hash, SHA_DIGEST_LENGTH,
signature, signature_len);
if(ret) {
return -1;
}
return 0;
#endif
}
/*
* hostkey_method_ssh_rsa_dtor
*
* Shutdown the hostkey
*/
static int
hostkey_method_ssh_rsa_dtor(LIBSSH2_SESSION * session, void **abstract)
{
libssh2_rsa_ctx *rsactx = (libssh2_rsa_ctx *) (*abstract);
(void) session;
_libssh2_rsa_free(rsactx);
*abstract = NULL;
return 0;
}
#ifdef OPENSSL_NO_MD5
#define MD5_DIGEST_LENGTH 16
#endif
static const LIBSSH2_HOSTKEY_METHOD hostkey_method_ssh_rsa = {
"ssh-rsa",
MD5_DIGEST_LENGTH,
hostkey_method_ssh_rsa_init,
hostkey_method_ssh_rsa_initPEM,
hostkey_method_ssh_rsa_initPEMFromMemory,
hostkey_method_ssh_rsa_sig_verify,
hostkey_method_ssh_rsa_signv,
NULL, /* encrypt */
hostkey_method_ssh_rsa_dtor,
};
#endif /* LIBSSH2_RSA */
#if LIBSSH2_DSA
/* ***********
* ssh-dss *
*********** */
static int hostkey_method_ssh_dss_dtor(LIBSSH2_SESSION * session,
void **abstract);
/*
* hostkey_method_ssh_dss_init
*
* Initialize the server hostkey working area with p/q/g/y set
*/
static int
hostkey_method_ssh_dss_init(LIBSSH2_SESSION * session,
const unsigned char *hostkey_data,
size_t hostkey_data_len,
void **abstract)
{
libssh2_dsa_ctx *dsactx;
unsigned char *p, *q, *g, *y;
size_t p_len, q_len, g_len, y_len;
struct string_buf buf;
if(*abstract) {
hostkey_method_ssh_dss_dtor(session, abstract);
*abstract = NULL;
}
if(hostkey_data_len < 27) {
_libssh2_debug(session, LIBSSH2_TRACE_ERROR,
"host key length too short");
return -1;
}
buf.data = (unsigned char *)hostkey_data;
buf.dataptr = buf.data;
buf.len = hostkey_data_len;
if(_libssh2_match_string(&buf, "ssh-dss"))
return -1;
if(_libssh2_get_string(&buf, &p, &p_len))
return -1;
if(_libssh2_get_string(&buf, &q, &q_len))
return -1;
if(_libssh2_get_string(&buf, &g, &g_len))
return -1;
if(_libssh2_get_string(&buf, &y, &y_len))
return -1;
if(_libssh2_dsa_new(&dsactx, p, p_len, q, q_len,
g, g_len, y, y_len, NULL, 0)) {
return -1;
}
*abstract = dsactx;
return 0;
}
/*
* hostkey_method_ssh_dss_initPEM
*
* Load a Private Key from a PEM file
*/
static int
hostkey_method_ssh_dss_initPEM(LIBSSH2_SESSION * session,
const char *privkeyfile,
unsigned const char *passphrase,
void **abstract)
{
libssh2_dsa_ctx *dsactx;
int ret;
if(*abstract) {
hostkey_method_ssh_dss_dtor(session, abstract);
*abstract = NULL;
}
ret = _libssh2_dsa_new_private(&dsactx, session, privkeyfile, passphrase);
if(ret) {
return -1;
}
*abstract = dsactx;
return 0;
}
/*
* hostkey_method_ssh_dss_initPEMFromMemory
*
* Load a Private Key from memory
*/
static int
hostkey_method_ssh_dss_initPEMFromMemory(LIBSSH2_SESSION * session,
const char *privkeyfiledata,
size_t privkeyfiledata_len,
unsigned const char *passphrase,
void **abstract)
{
libssh2_dsa_ctx *dsactx;
int ret;
if(*abstract) {
hostkey_method_ssh_dss_dtor(session, abstract);
*abstract = NULL;
}
ret = _libssh2_dsa_new_private_frommemory(&dsactx, session,
privkeyfiledata,
privkeyfiledata_len, passphrase);
if(ret) {
return -1;
}
*abstract = dsactx;
return 0;
}
/*
* libssh2_hostkey_method_ssh_dss_sign
*
* Verify signature created by remote
*/
static int
hostkey_method_ssh_dss_sig_verify(LIBSSH2_SESSION * session,
const unsigned char *sig,
size_t sig_len,
const unsigned char *m,
size_t m_len, void **abstract)
{
libssh2_dsa_ctx *dsactx = (libssh2_dsa_ctx *) (*abstract);
/* Skip past keyname_len(4) + keyname(7){"ssh-dss"} + signature_len(4) */
if(sig_len != 55) {
return _libssh2_error(session, LIBSSH2_ERROR_PROTO,
"Invalid DSS signature length");
}
sig += 15;
sig_len -= 15;
return _libssh2_dsa_sha1_verify(dsactx, sig, m, m_len);
}
/*
* hostkey_method_ssh_dss_signv
*
* Construct a signature from an array of vectors
*/
static int
hostkey_method_ssh_dss_signv(LIBSSH2_SESSION * session,
unsigned char **signature,
size_t *signature_len,
int veccount,
const struct iovec datavec[],
void **abstract)
{
libssh2_dsa_ctx *dsactx = (libssh2_dsa_ctx *) (*abstract);
unsigned char hash[SHA_DIGEST_LENGTH];
libssh2_sha1_ctx ctx;
int i;
*signature = LIBSSH2_CALLOC(session, 2 * SHA_DIGEST_LENGTH);
if(!*signature) {
return -1;
}
*signature_len = 2 * SHA_DIGEST_LENGTH;
(void)libssh2_sha1_init(&ctx);
for(i = 0; i < veccount; i++) {
libssh2_sha1_update(ctx, datavec[i].iov_base, datavec[i].iov_len);
}
libssh2_sha1_final(ctx, hash);
if(_libssh2_dsa_sha1_sign(dsactx, hash, SHA_DIGEST_LENGTH, *signature)) {
LIBSSH2_FREE(session, *signature);
return -1;
}
return 0;
}
/*
* libssh2_hostkey_method_ssh_dss_dtor
*
* Shutdown the hostkey method
*/
static int
hostkey_method_ssh_dss_dtor(LIBSSH2_SESSION * session, void **abstract)
{
libssh2_dsa_ctx *dsactx = (libssh2_dsa_ctx *) (*abstract);
(void) session;
_libssh2_dsa_free(dsactx);
*abstract = NULL;
return 0;
}
static const LIBSSH2_HOSTKEY_METHOD hostkey_method_ssh_dss = {
"ssh-dss",
MD5_DIGEST_LENGTH,
hostkey_method_ssh_dss_init,
hostkey_method_ssh_dss_initPEM,
hostkey_method_ssh_dss_initPEMFromMemory,
hostkey_method_ssh_dss_sig_verify,
hostkey_method_ssh_dss_signv,
NULL, /* encrypt */
hostkey_method_ssh_dss_dtor,
};
#endif /* LIBSSH2_DSA */
#if LIBSSH2_ECDSA
/* ***********
* ecdsa-sha2-nistp256/384/521 *
*********** */
static int
hostkey_method_ssh_ecdsa_dtor(LIBSSH2_SESSION * session,
void **abstract);
/*
* hostkey_method_ssh_ecdsa_init
*
* Initialize the server hostkey working area with e/n pair
*/
static int
hostkey_method_ssh_ecdsa_init(LIBSSH2_SESSION * session,
const unsigned char *hostkey_data,
size_t hostkey_data_len,
void **abstract)
{
libssh2_ecdsa_ctx *ecdsactx = NULL;
unsigned char *type_str, *domain, *public_key;
size_t key_len, len;
libssh2_curve_type type;
struct string_buf buf;
if(abstract != NULL && *abstract) {
hostkey_method_ssh_ecdsa_dtor(session, abstract);
*abstract = NULL;
}
if(hostkey_data_len < 39) {
_libssh2_debug(session, LIBSSH2_TRACE_ERROR,
"host key length too short");
return -1;
}
buf.data = (unsigned char *)hostkey_data;
buf.dataptr = buf.data;
buf.len = hostkey_data_len;
if(_libssh2_get_string(&buf, &type_str, &len) || len != 19)
return -1;
if(strncmp((char *) type_str, "ecdsa-sha2-nistp256", 19) == 0) {
type = LIBSSH2_EC_CURVE_NISTP256;
}
else if(strncmp((char *) type_str, "ecdsa-sha2-nistp384", 19) == 0) {
type = LIBSSH2_EC_CURVE_NISTP384;
}
else if(strncmp((char *) type_str, "ecdsa-sha2-nistp521", 19) == 0) {
type = LIBSSH2_EC_CURVE_NISTP521;
}
else {
return -1;
}
if(_libssh2_get_string(&buf, &domain, &len) || len != 8)
return -1;
if(type == LIBSSH2_EC_CURVE_NISTP256 &&
strncmp((char *)domain, "nistp256", 8) != 0) {
return -1;
}
else if(type == LIBSSH2_EC_CURVE_NISTP384 &&
strncmp((char *)domain, "nistp384", 8) != 0) {
return -1;
}
else if(type == LIBSSH2_EC_CURVE_NISTP521 &&
strncmp((char *)domain, "nistp521", 8) != 0) {
return -1;
}
/* public key */
if(_libssh2_get_string(&buf, &public_key, &key_len))
return -1;
if(_libssh2_ecdsa_curve_name_with_octal_new(&ecdsactx, public_key,
key_len, type))
return -1;
if(abstract != NULL)
*abstract = ecdsactx;
return 0;
}
/*
* hostkey_method_ssh_ecdsa_initPEM
*
* Load a Private Key from a PEM file
*/
static int
hostkey_method_ssh_ecdsa_initPEM(LIBSSH2_SESSION * session,
const char *privkeyfile,
unsigned const char *passphrase,
void **abstract)
{
libssh2_ecdsa_ctx *ec_ctx = NULL;
int ret;
if(abstract != NULL && *abstract) {
hostkey_method_ssh_ecdsa_dtor(session, abstract);
*abstract = NULL;
}
ret = _libssh2_ecdsa_new_private(&ec_ctx, session,
privkeyfile, passphrase);
if(abstract != NULL)
*abstract = ec_ctx;
return ret;
}
/*
* hostkey_method_ssh_ecdsa_initPEMFromMemory
*
* Load a Private Key from memory
*/
static int
hostkey_method_ssh_ecdsa_initPEMFromMemory(LIBSSH2_SESSION * session,
const char *privkeyfiledata,
size_t privkeyfiledata_len,
unsigned const char *passphrase,
void **abstract)
{
libssh2_ecdsa_ctx *ec_ctx = NULL;
int ret;
if(abstract != NULL && *abstract) {
hostkey_method_ssh_ecdsa_dtor(session, abstract);
*abstract = NULL;
}
ret = _libssh2_ecdsa_new_private_frommemory(&ec_ctx, session,
privkeyfiledata,
privkeyfiledata_len,
passphrase);
if(ret) {
return -1;
}
if(abstract != NULL)
*abstract = ec_ctx;
return 0;
}
/*
* hostkey_method_ecdsa_sig_verify
*
* Verify signature created by remote
*/
static int
hostkey_method_ssh_ecdsa_sig_verify(LIBSSH2_SESSION * session,
const unsigned char *sig,
size_t sig_len,
const unsigned char *m,
size_t m_len, void **abstract)
{
unsigned char *r, *s, *name;
size_t r_len, s_len, name_len;
uint32_t len;
struct string_buf buf;
libssh2_ecdsa_ctx *ctx = (libssh2_ecdsa_ctx *) (*abstract);
(void) session;
if(sig_len < 35)
return -1;
/* keyname_len(4) + keyname(19){"ecdsa-sha2-nistp256"} +
signature_len(4) */
buf.data = (unsigned char *)sig;
buf.dataptr = buf.data;
buf.len = sig_len;
if(_libssh2_get_string(&buf, &name, &name_len) || name_len != 19)
return -1;
if(_libssh2_get_u32(&buf, &len) != 0 || len < 8)
return -1;
if(_libssh2_get_string(&buf, &r, &r_len))
return -1;
if(_libssh2_get_string(&buf, &s, &s_len))
return -1;
return _libssh2_ecdsa_verify(ctx, r, r_len, s, s_len, m, m_len);
}
#define LIBSSH2_HOSTKEY_METHOD_EC_SIGNV_HASH(digest_type) \
{ \
unsigned char hash[SHA##digest_type##_DIGEST_LENGTH]; \
libssh2_sha##digest_type##_ctx ctx; \
int i; \
(void)libssh2_sha##digest_type##_init(&ctx); \
for(i = 0; i < veccount; i++) { \
libssh2_sha##digest_type##_update(ctx, datavec[i].iov_base, \
datavec[i].iov_len); \
} \
libssh2_sha##digest_type##_final(ctx, hash); \
ret = _libssh2_ecdsa_sign(session, ec_ctx, hash, \
SHA##digest_type##_DIGEST_LENGTH, \
signature, signature_len); \
}
/*
* hostkey_method_ecdsa_signv
*
* Construct a signature from an array of vectors
*/
static int
hostkey_method_ssh_ecdsa_signv(LIBSSH2_SESSION * session,
unsigned char **signature,
size_t *signature_len,
int veccount,
const struct iovec datavec[],
void **abstract)
{
libssh2_ecdsa_ctx *ec_ctx = (libssh2_ecdsa_ctx *) (*abstract);
libssh2_curve_type type = _libssh2_ecdsa_get_curve_type(ec_ctx);
int ret = 0;
if(type == LIBSSH2_EC_CURVE_NISTP256) {
LIBSSH2_HOSTKEY_METHOD_EC_SIGNV_HASH(256);
}
else if(type == LIBSSH2_EC_CURVE_NISTP384) {
LIBSSH2_HOSTKEY_METHOD_EC_SIGNV_HASH(384);
}
else if(type == LIBSSH2_EC_CURVE_NISTP521) {
LIBSSH2_HOSTKEY_METHOD_EC_SIGNV_HASH(512);
}
else {
return -1;
}
return ret;
}
/*
* hostkey_method_ssh_ecdsa_dtor
*
* Shutdown the hostkey by freeing EC_KEY context
*/
static int
hostkey_method_ssh_ecdsa_dtor(LIBSSH2_SESSION * session, void **abstract)
{
libssh2_ecdsa_ctx *keyctx = (libssh2_ecdsa_ctx *) (*abstract);
(void) session;
if(keyctx != NULL)
_libssh2_ecdsa_free(keyctx);
*abstract = NULL;
return 0;
}
static const LIBSSH2_HOSTKEY_METHOD hostkey_method_ecdsa_ssh_nistp256 = {
"ecdsa-sha2-nistp256",
SHA256_DIGEST_LENGTH,
hostkey_method_ssh_ecdsa_init,
hostkey_method_ssh_ecdsa_initPEM,
hostkey_method_ssh_ecdsa_initPEMFromMemory,
hostkey_method_ssh_ecdsa_sig_verify,
hostkey_method_ssh_ecdsa_signv,
NULL, /* encrypt */
hostkey_method_ssh_ecdsa_dtor,
};
static const LIBSSH2_HOSTKEY_METHOD hostkey_method_ecdsa_ssh_nistp384 = {
"ecdsa-sha2-nistp384",
SHA384_DIGEST_LENGTH,
hostkey_method_ssh_ecdsa_init,
hostkey_method_ssh_ecdsa_initPEM,
hostkey_method_ssh_ecdsa_initPEMFromMemory,
hostkey_method_ssh_ecdsa_sig_verify,
hostkey_method_ssh_ecdsa_signv,
NULL, /* encrypt */
hostkey_method_ssh_ecdsa_dtor,
};
static const LIBSSH2_HOSTKEY_METHOD hostkey_method_ecdsa_ssh_nistp521 = {
"ecdsa-sha2-nistp521",
SHA512_DIGEST_LENGTH,
hostkey_method_ssh_ecdsa_init,
hostkey_method_ssh_ecdsa_initPEM,
hostkey_method_ssh_ecdsa_initPEMFromMemory,
hostkey_method_ssh_ecdsa_sig_verify,
hostkey_method_ssh_ecdsa_signv,
NULL, /* encrypt */
hostkey_method_ssh_ecdsa_dtor,
};
static const LIBSSH2_HOSTKEY_METHOD hostkey_method_ecdsa_ssh_nistp256_cert = {
"[email protected]",
SHA256_DIGEST_LENGTH,
NULL,
hostkey_method_ssh_ecdsa_initPEM,
hostkey_method_ssh_ecdsa_initPEMFromMemory,
NULL,
hostkey_method_ssh_ecdsa_signv,
NULL, /* encrypt */
hostkey_method_ssh_ecdsa_dtor,
};
static const LIBSSH2_HOSTKEY_METHOD hostkey_method_ecdsa_ssh_nistp384_cert = {
"[email protected]",
SHA384_DIGEST_LENGTH,
NULL,
hostkey_method_ssh_ecdsa_initPEM,
hostkey_method_ssh_ecdsa_initPEMFromMemory,
NULL,
hostkey_method_ssh_ecdsa_signv,
NULL, /* encrypt */
hostkey_method_ssh_ecdsa_dtor,
};
static const LIBSSH2_HOSTKEY_METHOD hostkey_method_ecdsa_ssh_nistp521_cert = {
"[email protected]",
SHA512_DIGEST_LENGTH,
NULL,
hostkey_method_ssh_ecdsa_initPEM,
hostkey_method_ssh_ecdsa_initPEMFromMemory,
NULL,
hostkey_method_ssh_ecdsa_signv,
NULL, /* encrypt */
hostkey_method_ssh_ecdsa_dtor,
};
#endif /* LIBSSH2_ECDSA */
#if LIBSSH2_ED25519
/* ***********
* ed25519 *
*********** */
static int hostkey_method_ssh_ed25519_dtor(LIBSSH2_SESSION * session,
void **abstract);
/*
* hostkey_method_ssh_ed25519_init
*
* Initialize the server hostkey working area with e/n pair
*/
static int
hostkey_method_ssh_ed25519_init(LIBSSH2_SESSION * session,
const unsigned char *hostkey_data,
size_t hostkey_data_len,
void **abstract)
{
size_t key_len;
unsigned char *key;
libssh2_ed25519_ctx *ctx = NULL;
struct string_buf buf;
if(*abstract) {
hostkey_method_ssh_ed25519_dtor(session, abstract);
*abstract = NULL;
}
if(hostkey_data_len < 19) {
_libssh2_debug(session, LIBSSH2_TRACE_ERROR,
"host key length too short");
return -1;
}
buf.data = (unsigned char *)hostkey_data;
buf.dataptr = buf.data;
buf.len = hostkey_data_len;
if(_libssh2_match_string(&buf, "ssh-ed25519"))
return -1;
/* public key */
if(_libssh2_get_string(&buf, &key, &key_len))
return -1;
if(_libssh2_ed25519_new_public(&ctx, session, key, key_len) != 0) {
return -1;
}
*abstract = ctx;
return 0;
}
/*
* hostkey_method_ssh_ed25519_initPEM
*
* Load a Private Key from a PEM file
*/
static int
hostkey_method_ssh_ed25519_initPEM(LIBSSH2_SESSION * session,
const char *privkeyfile,
unsigned const char *passphrase,
void **abstract)
{
libssh2_ed25519_ctx *ec_ctx = NULL;
int ret;
if(*abstract) {
hostkey_method_ssh_ed25519_dtor(session, abstract);
*abstract = NULL;
}
ret = _libssh2_ed25519_new_private(&ec_ctx, session,
privkeyfile, passphrase);
if(ret) {
return -1;
}
*abstract = ec_ctx;
return ret;
}
/*
* hostkey_method_ssh_ed25519_initPEMFromMemory
*
* Load a Private Key from memory
*/
static int
hostkey_method_ssh_ed25519_initPEMFromMemory(LIBSSH2_SESSION * session,
const char *privkeyfiledata,
size_t privkeyfiledata_len,
unsigned const char *passphrase,
void **abstract)
{
libssh2_ed25519_ctx *ed_ctx = NULL;
int ret;
if(abstract != NULL && *abstract) {
hostkey_method_ssh_ed25519_dtor(session, abstract);
*abstract = NULL;
}
ret = _libssh2_ed25519_new_private_frommemory(&ed_ctx, session,
privkeyfiledata,
privkeyfiledata_len,
passphrase);
if(ret) {
return -1;
}
if(abstract != NULL)
*abstract = ed_ctx;
return 0;
}
/*
* hostkey_method_ssh_ed25519_sig_verify
*
* Verify signature created by remote
*/
static int
hostkey_method_ssh_ed25519_sig_verify(LIBSSH2_SESSION * session,
const unsigned char *sig,
size_t sig_len,
const unsigned char *m,
size_t m_len, void **abstract)
{
libssh2_ed25519_ctx *ctx = (libssh2_ed25519_ctx *) (*abstract);
(void) session;
if(sig_len < 19)
return -1;
/* Skip past keyname_len(4) + keyname(11){"ssh-ed25519"} +
signature_len(4) */
sig += 19;
sig_len -= 19;
if(sig_len != LIBSSH2_ED25519_SIG_LEN)
return -1;
return _libssh2_ed25519_verify(ctx, sig, sig_len, m, m_len);
}
/*
* hostkey_method_ssh_ed25519_signv
*
* Construct a signature from an array of vectors
*/
static int
hostkey_method_ssh_ed25519_signv(LIBSSH2_SESSION * session,
unsigned char **signature,
size_t *signature_len,
int veccount,
const struct iovec datavec[],
void **abstract)
{
libssh2_ed25519_ctx *ctx = (libssh2_ed25519_ctx *) (*abstract);
if(veccount != 1) {
return -1;
}
return _libssh2_ed25519_sign(ctx, session, signature, signature_len,
datavec[0].iov_base, datavec[0].iov_len);
}
/*
* hostkey_method_ssh_ed25519_dtor
*
* Shutdown the hostkey by freeing key context
*/
static int
hostkey_method_ssh_ed25519_dtor(LIBSSH2_SESSION * session, void **abstract)
{
libssh2_ed25519_ctx *keyctx = (libssh2_ed25519_ctx*) (*abstract);
(void) session;
if(keyctx)
_libssh2_ed25519_free(keyctx);
*abstract = NULL;
return 0;
}
static const LIBSSH2_HOSTKEY_METHOD hostkey_method_ssh_ed25519 = {
"ssh-ed25519",
SHA256_DIGEST_LENGTH,
hostkey_method_ssh_ed25519_init,
hostkey_method_ssh_ed25519_initPEM,
hostkey_method_ssh_ed25519_initPEMFromMemory,
hostkey_method_ssh_ed25519_sig_verify,
hostkey_method_ssh_ed25519_signv,
NULL, /* encrypt */
hostkey_method_ssh_ed25519_dtor,
};
#endif /*LIBSSH2_ED25519*/
static const LIBSSH2_HOSTKEY_METHOD *hostkey_methods[] = {
#if LIBSSH2_ECDSA
&hostkey_method_ecdsa_ssh_nistp256,
&hostkey_method_ecdsa_ssh_nistp384,
&hostkey_method_ecdsa_ssh_nistp521,
&hostkey_method_ecdsa_ssh_nistp256_cert,
&hostkey_method_ecdsa_ssh_nistp384_cert,
&hostkey_method_ecdsa_ssh_nistp521_cert,
#endif
#if LIBSSH2_ED25519
&hostkey_method_ssh_ed25519,
#endif
#if LIBSSH2_RSA
&hostkey_method_ssh_rsa,
#endif /* LIBSSH2_RSA */
#if LIBSSH2_DSA
&hostkey_method_ssh_dss,
#endif /* LIBSSH2_DSA */
NULL
};
const LIBSSH2_HOSTKEY_METHOD **
libssh2_hostkey_methods(void)
{
return hostkey_methods;
}
/*
* libssh2_hostkey_hash
*
* Returns hash signature
* Returned buffer should NOT be freed
* Length of buffer is determined by hash type
* i.e. MD5 == 16, SHA1 == 20, SHA256 == 32
*/
LIBSSH2_API const char *
libssh2_hostkey_hash(LIBSSH2_SESSION * session, int hash_type)
{
switch(hash_type) {
#if LIBSSH2_MD5
case LIBSSH2_HOSTKEY_HASH_MD5:
return (session->server_hostkey_md5_valid)
? (char *) session->server_hostkey_md5
: NULL;
break;
#endif /* LIBSSH2_MD5 */
case LIBSSH2_HOSTKEY_HASH_SHA1:
return (session->server_hostkey_sha1_valid)
? (char *) session->server_hostkey_sha1
: NULL;
break;
case LIBSSH2_HOSTKEY_HASH_SHA256:
return (session->server_hostkey_sha256_valid)
? (char *) session->server_hostkey_sha256
: NULL;
break;
default:
return NULL;
}
}
static int hostkey_type(const unsigned char *hostkey, size_t len)
{
static const unsigned char rsa[] = {
0, 0, 0, 0x07, 's', 's', 'h', '-', 'r', 's', 'a'
};
static const unsigned char dss[] = {
0, 0, 0, 0x07, 's', 's', 'h', '-', 'd', 's', 's'
};
static const unsigned char ecdsa_256[] = {
0, 0, 0, 0x13, 'e', 'c', 'd', 's', 'a', '-', 's', 'h', 'a', '2', '-',
'n', 'i', 's', 't', 'p', '2', '5', '6'
};
static const unsigned char ecdsa_384[] = {
0, 0, 0, 0x13, 'e', 'c', 'd', 's', 'a', '-', 's', 'h', 'a', '2', '-',
'n', 'i', 's', 't', 'p', '3', '8', '4'
};
static const unsigned char ecdsa_521[] = {
0, 0, 0, 0x13, 'e', 'c', 'd', 's', 'a', '-', 's', 'h', 'a', '2', '-',
'n', 'i', 's', 't', 'p', '5', '2', '1'
};
static const unsigned char ed25519[] = {
0, 0, 0, 0x0b, 's', 's', 'h', '-', 'e', 'd', '2', '5', '5', '1', '9'
};
if(len < 11)
return LIBSSH2_HOSTKEY_TYPE_UNKNOWN;
if(!memcmp(rsa, hostkey, 11))
return LIBSSH2_HOSTKEY_TYPE_RSA;
if(!memcmp(dss, hostkey, 11))
return LIBSSH2_HOSTKEY_TYPE_DSS;
if(len < 15)
return LIBSSH2_HOSTKEY_TYPE_UNKNOWN;
if(!memcmp(ed25519, hostkey, 15))
return LIBSSH2_HOSTKEY_TYPE_ED25519;
if(len < 23)
return LIBSSH2_HOSTKEY_TYPE_UNKNOWN;
if(!memcmp(ecdsa_256, hostkey, 23))
return LIBSSH2_HOSTKEY_TYPE_ECDSA_256;
if(!memcmp(ecdsa_384, hostkey, 23))
return LIBSSH2_HOSTKEY_TYPE_ECDSA_384;
if(!memcmp(ecdsa_521, hostkey, 23))
return LIBSSH2_HOSTKEY_TYPE_ECDSA_521;
return LIBSSH2_HOSTKEY_TYPE_UNKNOWN;
}
/*
* libssh2_session_hostkey()
*
* Returns the server key and length.
*
*/
LIBSSH2_API const char *
libssh2_session_hostkey(LIBSSH2_SESSION *session, size_t *len, int *type)
{
if(session->server_hostkey_len) {
if(len)
*len = session->server_hostkey_len;
if(type)
*type = hostkey_type(session->server_hostkey,
session->server_hostkey_len);
return (char *) session->server_hostkey;
}
if(len)
*len = 0;
return NULL;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/comp.h | #ifndef __LIBSSH2_COMP_H
#define __LIBSSH2_COMP_H
/* Copyright (C) 2009-2010 by Daniel Stenberg
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
*/
#include "libssh2_priv.h"
const LIBSSH2_COMP_METHOD **_libssh2_comp_methods(LIBSSH2_SESSION *session);
#endif /* __LIBSSH2_COMP_H */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/mac.c | /* Copyright (c) 2004-2007, Sara Golemon <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include "mac.h"
#ifdef LIBSSH2_MAC_NONE
/* mac_none_MAC
* Minimalist MAC: No MAC
*/
static int
mac_none_MAC(LIBSSH2_SESSION * session, unsigned char *buf,
uint32_t seqno, const unsigned char *packet,
uint32_t packet_len, const unsigned char *addtl,
uint32_t addtl_len, void **abstract)
{
return 0;
}
static LIBSSH2_MAC_METHOD mac_method_none = {
"none",
0,
0,
NULL,
mac_none_MAC,
NULL
};
#endif /* LIBSSH2_MAC_NONE */
/* mac_method_common_init
* Initialize simple mac methods
*/
static int
mac_method_common_init(LIBSSH2_SESSION * session, unsigned char *key,
int *free_key, void **abstract)
{
*abstract = key;
*free_key = 0;
(void) session;
return 0;
}
/* mac_method_common_dtor
* Cleanup simple mac methods
*/
static int
mac_method_common_dtor(LIBSSH2_SESSION * session, void **abstract)
{
if(*abstract) {
LIBSSH2_FREE(session, *abstract);
}
*abstract = NULL;
return 0;
}
#if LIBSSH2_HMAC_SHA512
/* mac_method_hmac_sha512_hash
* Calculate hash using full sha512 value
*/
static int
mac_method_hmac_sha2_512_hash(LIBSSH2_SESSION * session,
unsigned char *buf, uint32_t seqno,
const unsigned char *packet,
uint32_t packet_len,
const unsigned char *addtl,
uint32_t addtl_len, void **abstract)
{
libssh2_hmac_ctx ctx;
unsigned char seqno_buf[4];
(void) session;
_libssh2_htonu32(seqno_buf, seqno);
libssh2_hmac_ctx_init(ctx);
libssh2_hmac_sha512_init(&ctx, *abstract, 64);
libssh2_hmac_update(ctx, seqno_buf, 4);
libssh2_hmac_update(ctx, packet, packet_len);
if(addtl && addtl_len) {
libssh2_hmac_update(ctx, addtl, addtl_len);
}
libssh2_hmac_final(ctx, buf);
libssh2_hmac_cleanup(&ctx);
return 0;
}
static const LIBSSH2_MAC_METHOD mac_method_hmac_sha2_512 = {
"hmac-sha2-512",
64,
64,
mac_method_common_init,
mac_method_hmac_sha2_512_hash,
mac_method_common_dtor,
};
#endif
#if LIBSSH2_HMAC_SHA256
/* mac_method_hmac_sha256_hash
* Calculate hash using full sha256 value
*/
static int
mac_method_hmac_sha2_256_hash(LIBSSH2_SESSION * session,
unsigned char *buf, uint32_t seqno,
const unsigned char *packet,
uint32_t packet_len,
const unsigned char *addtl,
uint32_t addtl_len, void **abstract)
{
libssh2_hmac_ctx ctx;
unsigned char seqno_buf[4];
(void) session;
_libssh2_htonu32(seqno_buf, seqno);
libssh2_hmac_ctx_init(ctx);
libssh2_hmac_sha256_init(&ctx, *abstract, 32);
libssh2_hmac_update(ctx, seqno_buf, 4);
libssh2_hmac_update(ctx, packet, packet_len);
if(addtl && addtl_len) {
libssh2_hmac_update(ctx, addtl, addtl_len);
}
libssh2_hmac_final(ctx, buf);
libssh2_hmac_cleanup(&ctx);
return 0;
}
static const LIBSSH2_MAC_METHOD mac_method_hmac_sha2_256 = {
"hmac-sha2-256",
32,
32,
mac_method_common_init,
mac_method_hmac_sha2_256_hash,
mac_method_common_dtor,
};
#endif
/* mac_method_hmac_sha1_hash
* Calculate hash using full sha1 value
*/
static int
mac_method_hmac_sha1_hash(LIBSSH2_SESSION * session,
unsigned char *buf, uint32_t seqno,
const unsigned char *packet,
uint32_t packet_len,
const unsigned char *addtl,
uint32_t addtl_len, void **abstract)
{
libssh2_hmac_ctx ctx;
unsigned char seqno_buf[4];
(void) session;
_libssh2_htonu32(seqno_buf, seqno);
libssh2_hmac_ctx_init(ctx);
libssh2_hmac_sha1_init(&ctx, *abstract, 20);
libssh2_hmac_update(ctx, seqno_buf, 4);
libssh2_hmac_update(ctx, packet, packet_len);
if(addtl && addtl_len) {
libssh2_hmac_update(ctx, addtl, addtl_len);
}
libssh2_hmac_final(ctx, buf);
libssh2_hmac_cleanup(&ctx);
return 0;
}
static const LIBSSH2_MAC_METHOD mac_method_hmac_sha1 = {
"hmac-sha1",
20,
20,
mac_method_common_init,
mac_method_hmac_sha1_hash,
mac_method_common_dtor,
};
/* mac_method_hmac_sha1_96_hash
* Calculate hash using first 96 bits of sha1 value
*/
static int
mac_method_hmac_sha1_96_hash(LIBSSH2_SESSION * session,
unsigned char *buf, uint32_t seqno,
const unsigned char *packet,
uint32_t packet_len,
const unsigned char *addtl,
uint32_t addtl_len, void **abstract)
{
unsigned char temp[SHA_DIGEST_LENGTH];
mac_method_hmac_sha1_hash(session, temp, seqno, packet, packet_len,
addtl, addtl_len, abstract);
memcpy(buf, (char *) temp, 96 / 8);
return 0;
}
static const LIBSSH2_MAC_METHOD mac_method_hmac_sha1_96 = {
"hmac-sha1-96",
12,
20,
mac_method_common_init,
mac_method_hmac_sha1_96_hash,
mac_method_common_dtor,
};
#if LIBSSH2_MD5
/* mac_method_hmac_md5_hash
* Calculate hash using full md5 value
*/
static int
mac_method_hmac_md5_hash(LIBSSH2_SESSION * session, unsigned char *buf,
uint32_t seqno,
const unsigned char *packet,
uint32_t packet_len,
const unsigned char *addtl,
uint32_t addtl_len, void **abstract)
{
libssh2_hmac_ctx ctx;
unsigned char seqno_buf[4];
(void) session;
_libssh2_htonu32(seqno_buf, seqno);
libssh2_hmac_ctx_init(ctx);
libssh2_hmac_md5_init(&ctx, *abstract, 16);
libssh2_hmac_update(ctx, seqno_buf, 4);
libssh2_hmac_update(ctx, packet, packet_len);
if(addtl && addtl_len) {
libssh2_hmac_update(ctx, addtl, addtl_len);
}
libssh2_hmac_final(ctx, buf);
libssh2_hmac_cleanup(&ctx);
return 0;
}
static const LIBSSH2_MAC_METHOD mac_method_hmac_md5 = {
"hmac-md5",
16,
16,
mac_method_common_init,
mac_method_hmac_md5_hash,
mac_method_common_dtor,
};
/* mac_method_hmac_md5_96_hash
* Calculate hash using first 96 bits of md5 value
*/
static int
mac_method_hmac_md5_96_hash(LIBSSH2_SESSION * session,
unsigned char *buf, uint32_t seqno,
const unsigned char *packet,
uint32_t packet_len,
const unsigned char *addtl,
uint32_t addtl_len, void **abstract)
{
unsigned char temp[MD5_DIGEST_LENGTH];
mac_method_hmac_md5_hash(session, temp, seqno, packet, packet_len,
addtl, addtl_len, abstract);
memcpy(buf, (char *) temp, 96 / 8);
return 0;
}
static const LIBSSH2_MAC_METHOD mac_method_hmac_md5_96 = {
"hmac-md5-96",
12,
16,
mac_method_common_init,
mac_method_hmac_md5_96_hash,
mac_method_common_dtor,
};
#endif /* LIBSSH2_MD5 */
#if LIBSSH2_HMAC_RIPEMD
/* mac_method_hmac_ripemd160_hash
* Calculate hash using ripemd160 value
*/
static int
mac_method_hmac_ripemd160_hash(LIBSSH2_SESSION * session,
unsigned char *buf, uint32_t seqno,
const unsigned char *packet,
uint32_t packet_len,
const unsigned char *addtl,
uint32_t addtl_len,
void **abstract)
{
libssh2_hmac_ctx ctx;
unsigned char seqno_buf[4];
(void) session;
_libssh2_htonu32(seqno_buf, seqno);
libssh2_hmac_ctx_init(ctx);
libssh2_hmac_ripemd160_init(&ctx, *abstract, 20);
libssh2_hmac_update(ctx, seqno_buf, 4);
libssh2_hmac_update(ctx, packet, packet_len);
if(addtl && addtl_len) {
libssh2_hmac_update(ctx, addtl, addtl_len);
}
libssh2_hmac_final(ctx, buf);
libssh2_hmac_cleanup(&ctx);
return 0;
}
static const LIBSSH2_MAC_METHOD mac_method_hmac_ripemd160 = {
"hmac-ripemd160",
20,
20,
mac_method_common_init,
mac_method_hmac_ripemd160_hash,
mac_method_common_dtor,
};
static const LIBSSH2_MAC_METHOD mac_method_hmac_ripemd160_openssh_com = {
"[email protected]",
20,
20,
mac_method_common_init,
mac_method_hmac_ripemd160_hash,
mac_method_common_dtor,
};
#endif /* LIBSSH2_HMAC_RIPEMD */
static const LIBSSH2_MAC_METHOD *mac_methods[] = {
#if LIBSSH2_HMAC_SHA256
&mac_method_hmac_sha2_256,
#endif
#if LIBSSH2_HMAC_SHA512
&mac_method_hmac_sha2_512,
#endif
&mac_method_hmac_sha1,
&mac_method_hmac_sha1_96,
#if LIBSSH2_MD5
&mac_method_hmac_md5,
&mac_method_hmac_md5_96,
#endif
#if LIBSSH2_HMAC_RIPEMD
&mac_method_hmac_ripemd160,
&mac_method_hmac_ripemd160_openssh_com,
#endif /* LIBSSH2_HMAC_RIPEMD */
#ifdef LIBSSH2_MAC_NONE
&mac_method_none,
#endif /* LIBSSH2_MAC_NONE */
NULL
};
const LIBSSH2_MAC_METHOD **
_libssh2_mac_methods(void)
{
return mac_methods;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/agent.c | /*
* Copyright (c) 2009 by Daiki Ueno
* Copyright (C) 2010-2014 by Daniel Stenberg
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#include "agent.h"
#include "misc.h"
#include <errno.h>
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#else
/* Use the existence of sys/un.h as a test if Unix domain socket is
supported. winsock*.h define PF_UNIX/AF_UNIX but do not actually
support them. */
#undef PF_UNIX
#endif
#include "userauth.h"
#include "session.h"
#ifdef WIN32
#include <stdlib.h>
#endif
/* Requests from client to agent for protocol 1 key operations */
#define SSH_AGENTC_REQUEST_RSA_IDENTITIES 1
#define SSH_AGENTC_RSA_CHALLENGE 3
#define SSH_AGENTC_ADD_RSA_IDENTITY 7
#define SSH_AGENTC_REMOVE_RSA_IDENTITY 8
#define SSH_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9
#define SSH_AGENTC_ADD_RSA_ID_CONSTRAINED 24
/* Requests from client to agent for protocol 2 key operations */
#define SSH2_AGENTC_REQUEST_IDENTITIES 11
#define SSH2_AGENTC_SIGN_REQUEST 13
#define SSH2_AGENTC_ADD_IDENTITY 17
#define SSH2_AGENTC_REMOVE_IDENTITY 18
#define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19
#define SSH2_AGENTC_ADD_ID_CONSTRAINED 25
/* Key-type independent requests from client to agent */
#define SSH_AGENTC_ADD_SMARTCARD_KEY 20
#define SSH_AGENTC_REMOVE_SMARTCARD_KEY 21
#define SSH_AGENTC_LOCK 22
#define SSH_AGENTC_UNLOCK 23
#define SSH_AGENTC_ADD_SMARTCARD_KEY_CONSTRAINED 26
/* Generic replies from agent to client */
#define SSH_AGENT_FAILURE 5
#define SSH_AGENT_SUCCESS 6
/* Replies from agent to client for protocol 1 key operations */
#define SSH_AGENT_RSA_IDENTITIES_ANSWER 2
#define SSH_AGENT_RSA_RESPONSE 4
/* Replies from agent to client for protocol 2 key operations */
#define SSH2_AGENT_IDENTITIES_ANSWER 12
#define SSH2_AGENT_SIGN_RESPONSE 14
/* Key constraint identifiers */
#define SSH_AGENT_CONSTRAIN_LIFETIME 1
#define SSH_AGENT_CONSTRAIN_CONFIRM 2
#ifdef PF_UNIX
static int
agent_connect_unix(LIBSSH2_AGENT *agent)
{
const char *path;
struct sockaddr_un s_un;
path = agent->identity_agent_path;
if(!path) {
path = getenv("SSH_AUTH_SOCK");
if(!path)
return _libssh2_error(agent->session, LIBSSH2_ERROR_BAD_USE,
"no auth sock variable");
}
agent->fd = socket(PF_UNIX, SOCK_STREAM, 0);
if(agent->fd < 0)
return _libssh2_error(agent->session, LIBSSH2_ERROR_BAD_SOCKET,
"failed creating socket");
s_un.sun_family = AF_UNIX;
strncpy(s_un.sun_path, path, sizeof s_un.sun_path);
s_un.sun_path[sizeof(s_un.sun_path)-1] = 0; /* make sure there's a trailing
zero */
if(connect(agent->fd, (struct sockaddr*)(&s_un), sizeof s_un) != 0) {
close(agent->fd);
return _libssh2_error(agent->session, LIBSSH2_ERROR_AGENT_PROTOCOL,
"failed connecting with agent");
}
return LIBSSH2_ERROR_NONE;
}
#define RECV_SEND_ALL(func, socket, buffer, length, flags, abstract) \
int rc; \
size_t finished = 0; \
\
while(finished < length) { \
rc = func(socket, \
(char *)buffer + finished, length - finished, \
flags, abstract); \
if(rc < 0) \
return rc; \
\
finished += rc; \
} \
\
return finished;
static ssize_t _send_all(LIBSSH2_SEND_FUNC(func), libssh2_socket_t socket,
const void *buffer, size_t length,
int flags, void **abstract)
{
RECV_SEND_ALL(func, socket, buffer, length, flags, abstract);
}
static ssize_t _recv_all(LIBSSH2_RECV_FUNC(func), libssh2_socket_t socket,
void *buffer, size_t length,
int flags, void **abstract)
{
RECV_SEND_ALL(func, socket, buffer, length, flags, abstract);
}
#undef RECV_SEND_ALL
static int
agent_transact_unix(LIBSSH2_AGENT *agent, agent_transaction_ctx_t transctx)
{
unsigned char buf[4];
int rc;
/* Send the length of the request */
if(transctx->state == agent_NB_state_request_created) {
_libssh2_htonu32(buf, transctx->request_len);
rc = _send_all(agent->session->send, agent->fd,
buf, sizeof buf, 0, &agent->session->abstract);
if(rc == -EAGAIN)
return LIBSSH2_ERROR_EAGAIN;
else if(rc < 0)
return _libssh2_error(agent->session, LIBSSH2_ERROR_SOCKET_SEND,
"agent send failed");
transctx->state = agent_NB_state_request_length_sent;
}
/* Send the request body */
if(transctx->state == agent_NB_state_request_length_sent) {
rc = _send_all(agent->session->send, agent->fd, transctx->request,
transctx->request_len, 0, &agent->session->abstract);
if(rc == -EAGAIN)
return LIBSSH2_ERROR_EAGAIN;
else if(rc < 0)
return _libssh2_error(agent->session, LIBSSH2_ERROR_SOCKET_SEND,
"agent send failed");
transctx->state = agent_NB_state_request_sent;
}
/* Receive the length of a response */
if(transctx->state == agent_NB_state_request_sent) {
rc = _recv_all(agent->session->recv, agent->fd,
buf, sizeof buf, 0, &agent->session->abstract);
if(rc < 0) {
if(rc == -EAGAIN)
return LIBSSH2_ERROR_EAGAIN;
return _libssh2_error(agent->session, LIBSSH2_ERROR_SOCKET_RECV,
"agent recv failed");
}
transctx->response_len = _libssh2_ntohu32(buf);
transctx->response = LIBSSH2_ALLOC(agent->session,
transctx->response_len);
if(!transctx->response)
return LIBSSH2_ERROR_ALLOC;
transctx->state = agent_NB_state_response_length_received;
}
/* Receive the response body */
if(transctx->state == agent_NB_state_response_length_received) {
rc = _recv_all(agent->session->recv, agent->fd, transctx->response,
transctx->response_len, 0, &agent->session->abstract);
if(rc < 0) {
if(rc == -EAGAIN)
return LIBSSH2_ERROR_EAGAIN;
return _libssh2_error(agent->session, LIBSSH2_ERROR_SOCKET_SEND,
"agent recv failed");
}
transctx->state = agent_NB_state_response_received;
}
return 0;
}
static int
agent_disconnect_unix(LIBSSH2_AGENT *agent)
{
int ret;
ret = close(agent->fd);
if(ret != -1)
agent->fd = LIBSSH2_INVALID_SOCKET;
else
return _libssh2_error(agent->session, LIBSSH2_ERROR_SOCKET_DISCONNECT,
"failed closing the agent socket");
return LIBSSH2_ERROR_NONE;
}
struct agent_ops agent_ops_unix = {
agent_connect_unix,
agent_transact_unix,
agent_disconnect_unix
};
#endif /* PF_UNIX */
#ifdef WIN32
/* Code to talk to Pageant was taken from PuTTY.
*
* Portions copyright Robert de Bath, Joris van Rantwijk, Delian
* Delchev, Andreas Schultz, Jeroen Massar, Wez Furlong, Nicolas
* Barry, Justin Bradford, Ben Harris, Malcolm Smith, Ahmad Khalifa,
* Markus Kuhn, Colin Watson, and CORE SDI S.A.
*/
#define PAGEANT_COPYDATA_ID 0x804e50ba /* random goop */
#define PAGEANT_MAX_MSGLEN 8192
static int
agent_connect_pageant(LIBSSH2_AGENT *agent)
{
HWND hwnd;
hwnd = FindWindowA("Pageant", "Pageant");
if(!hwnd)
return _libssh2_error(agent->session, LIBSSH2_ERROR_AGENT_PROTOCOL,
"failed connecting agent");
agent->fd = 0; /* Mark as the connection has been established */
return LIBSSH2_ERROR_NONE;
}
static int
agent_transact_pageant(LIBSSH2_AGENT *agent, agent_transaction_ctx_t transctx)
{
HWND hwnd;
char mapname[23];
HANDLE filemap;
unsigned char *p;
unsigned char *p2;
int id;
COPYDATASTRUCT cds;
if(!transctx || 4 + transctx->request_len > PAGEANT_MAX_MSGLEN)
return _libssh2_error(agent->session, LIBSSH2_ERROR_INVAL,
"illegal input");
hwnd = FindWindowA("Pageant", "Pageant");
if(!hwnd)
return _libssh2_error(agent->session, LIBSSH2_ERROR_AGENT_PROTOCOL,
"found no pageant");
snprintf(mapname, sizeof(mapname),
"PageantRequest%08x%c", (unsigned)GetCurrentThreadId(), '\0');
filemap = CreateFileMappingA(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
0, PAGEANT_MAX_MSGLEN, mapname);
if(filemap == NULL || filemap == INVALID_HANDLE_VALUE)
return _libssh2_error(agent->session, LIBSSH2_ERROR_AGENT_PROTOCOL,
"failed setting up pageant filemap");
p2 = p = MapViewOfFile(filemap, FILE_MAP_WRITE, 0, 0, 0);
if(p == NULL || p2 == NULL) {
CloseHandle(filemap);
return _libssh2_error(agent->session, LIBSSH2_ERROR_AGENT_PROTOCOL,
"failed to open pageant filemap for writing");
}
_libssh2_store_str(&p2, (const char *)transctx->request,
transctx->request_len);
cds.dwData = PAGEANT_COPYDATA_ID;
cds.cbData = 1 + strlen(mapname);
cds.lpData = mapname;
id = SendMessage(hwnd, WM_COPYDATA, (WPARAM) NULL, (LPARAM) &cds);
if(id > 0) {
transctx->response_len = _libssh2_ntohu32(p);
if(transctx->response_len > PAGEANT_MAX_MSGLEN) {
UnmapViewOfFile(p);
CloseHandle(filemap);
return _libssh2_error(agent->session, LIBSSH2_ERROR_AGENT_PROTOCOL,
"agent setup fail");
}
transctx->response = LIBSSH2_ALLOC(agent->session,
transctx->response_len);
if(!transctx->response) {
UnmapViewOfFile(p);
CloseHandle(filemap);
return _libssh2_error(agent->session, LIBSSH2_ERROR_ALLOC,
"agent malloc");
}
memcpy(transctx->response, p + 4, transctx->response_len);
}
UnmapViewOfFile(p);
CloseHandle(filemap);
return 0;
}
static int
agent_disconnect_pageant(LIBSSH2_AGENT *agent)
{
agent->fd = LIBSSH2_INVALID_SOCKET;
return 0;
}
struct agent_ops agent_ops_pageant = {
agent_connect_pageant,
agent_transact_pageant,
agent_disconnect_pageant
};
#endif /* WIN32 */
static struct {
const char *name;
struct agent_ops *ops;
} supported_backends[] = {
#ifdef WIN32
{"Pageant", &agent_ops_pageant},
{"OpenSSH", &agent_ops_openssh},
#endif /* WIN32 */
#ifdef PF_UNIX
{"Unix", &agent_ops_unix},
#endif /* PF_UNIX */
{NULL, NULL}
};
static int
agent_sign(LIBSSH2_SESSION *session, unsigned char **sig, size_t *sig_len,
const unsigned char *data, size_t data_len, void **abstract)
{
LIBSSH2_AGENT *agent = (LIBSSH2_AGENT *) (*abstract);
agent_transaction_ctx_t transctx = &agent->transctx;
struct agent_publickey *identity = agent->identity;
ssize_t len = 1 + 4 + identity->external.blob_len + 4 + data_len + 4;
ssize_t method_len;
unsigned char *s;
int rc;
/* Create a request to sign the data */
if(transctx->state == agent_NB_state_init) {
s = transctx->request = LIBSSH2_ALLOC(session, len);
if(!transctx->request)
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"out of memory");
*s++ = SSH2_AGENTC_SIGN_REQUEST;
/* key blob */
_libssh2_store_str(&s, (const char *)identity->external.blob,
identity->external.blob_len);
/* data */
_libssh2_store_str(&s, (const char *)data, data_len);
/* flags */
_libssh2_store_u32(&s, 0);
transctx->request_len = s - transctx->request;
transctx->send_recv_total = 0;
transctx->state = agent_NB_state_request_created;
}
/* Make sure to be re-called as a result of EAGAIN. */
if(*transctx->request != SSH2_AGENTC_SIGN_REQUEST)
return _libssh2_error(session, LIBSSH2_ERROR_BAD_USE,
"illegal request");
if(!agent->ops)
/* if no agent has been connected, bail out */
return _libssh2_error(session, LIBSSH2_ERROR_BAD_USE,
"agent not connected");
rc = agent->ops->transact(agent, transctx);
if(rc) {
goto error;
}
LIBSSH2_FREE(session, transctx->request);
transctx->request = NULL;
len = transctx->response_len;
s = transctx->response;
len--;
if(len < 0) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
goto error;
}
if(*s != SSH2_AGENT_SIGN_RESPONSE) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
goto error;
}
s++;
/* Skip the entire length of the signature */
len -= 4;
if(len < 0) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
goto error;
}
s += 4;
/* Skip signing method */
len -= 4;
if(len < 0) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
goto error;
}
method_len = _libssh2_ntohu32(s);
s += 4;
len -= method_len;
if(len < 0) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
goto error;
}
s += method_len;
/* Read the signature */
len -= 4;
if(len < 0) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
goto error;
}
*sig_len = _libssh2_ntohu32(s);
s += 4;
len -= *sig_len;
if(len < 0) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
goto error;
}
*sig = LIBSSH2_ALLOC(session, *sig_len);
if(!*sig) {
rc = LIBSSH2_ERROR_ALLOC;
goto error;
}
memcpy(*sig, s, *sig_len);
error:
LIBSSH2_FREE(session, transctx->request);
transctx->request = NULL;
LIBSSH2_FREE(session, transctx->response);
transctx->response = NULL;
return _libssh2_error(session, rc, "agent sign failure");
}
static int
agent_list_identities(LIBSSH2_AGENT *agent)
{
agent_transaction_ctx_t transctx = &agent->transctx;
ssize_t len, num_identities;
unsigned char *s;
int rc;
unsigned char c = SSH2_AGENTC_REQUEST_IDENTITIES;
/* Create a request to list identities */
if(transctx->state == agent_NB_state_init) {
transctx->request = &c;
transctx->request_len = 1;
transctx->send_recv_total = 0;
transctx->state = agent_NB_state_request_created;
}
/* Make sure to be re-called as a result of EAGAIN. */
if(*transctx->request != SSH2_AGENTC_REQUEST_IDENTITIES)
return _libssh2_error(agent->session, LIBSSH2_ERROR_BAD_USE,
"illegal agent request");
if(!agent->ops)
/* if no agent has been connected, bail out */
return _libssh2_error(agent->session, LIBSSH2_ERROR_BAD_USE,
"agent not connected");
rc = agent->ops->transact(agent, transctx);
if(rc) {
LIBSSH2_FREE(agent->session, transctx->response);
transctx->response = NULL;
return rc;
}
transctx->request = NULL;
len = transctx->response_len;
s = transctx->response;
len--;
if(len < 0) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
goto error;
}
if(*s != SSH2_AGENT_IDENTITIES_ANSWER) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
goto error;
}
s++;
/* Read the length of identities */
len -= 4;
if(len < 0) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
goto error;
}
num_identities = _libssh2_ntohu32(s);
s += 4;
while(num_identities--) {
struct agent_publickey *identity;
ssize_t comment_len;
/* Read the length of the blob */
len -= 4;
if(len < 0) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
goto error;
}
identity = LIBSSH2_ALLOC(agent->session, sizeof *identity);
if(!identity) {
rc = LIBSSH2_ERROR_ALLOC;
goto error;
}
identity->external.blob_len = _libssh2_ntohu32(s);
s += 4;
/* Read the blob */
len -= identity->external.blob_len;
if(len < 0) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
LIBSSH2_FREE(agent->session, identity);
goto error;
}
identity->external.blob = LIBSSH2_ALLOC(agent->session,
identity->external.blob_len);
if(!identity->external.blob) {
rc = LIBSSH2_ERROR_ALLOC;
LIBSSH2_FREE(agent->session, identity);
goto error;
}
memcpy(identity->external.blob, s, identity->external.blob_len);
s += identity->external.blob_len;
/* Read the length of the comment */
len -= 4;
if(len < 0) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
LIBSSH2_FREE(agent->session, identity->external.blob);
LIBSSH2_FREE(agent->session, identity);
goto error;
}
comment_len = _libssh2_ntohu32(s);
s += 4;
/* Read the comment */
len -= comment_len;
if(len < 0) {
rc = LIBSSH2_ERROR_AGENT_PROTOCOL;
LIBSSH2_FREE(agent->session, identity->external.blob);
LIBSSH2_FREE(agent->session, identity);
goto error;
}
identity->external.comment = LIBSSH2_ALLOC(agent->session,
comment_len + 1);
if(!identity->external.comment) {
rc = LIBSSH2_ERROR_ALLOC;
LIBSSH2_FREE(agent->session, identity->external.blob);
LIBSSH2_FREE(agent->session, identity);
goto error;
}
identity->external.comment[comment_len] = '\0';
memcpy(identity->external.comment, s, comment_len);
s += comment_len;
_libssh2_list_add(&agent->head, &identity->node);
}
error:
LIBSSH2_FREE(agent->session, transctx->response);
transctx->response = NULL;
return _libssh2_error(agent->session, rc,
"agent list id failed");
}
static void
agent_free_identities(LIBSSH2_AGENT *agent)
{
struct agent_publickey *node;
struct agent_publickey *next;
for(node = _libssh2_list_first(&agent->head); node; node = next) {
next = _libssh2_list_next(&node->node);
LIBSSH2_FREE(agent->session, node->external.blob);
LIBSSH2_FREE(agent->session, node->external.comment);
LIBSSH2_FREE(agent->session, node);
}
_libssh2_list_init(&agent->head);
}
#define AGENT_PUBLICKEY_MAGIC 0x3bdefed2
/*
* agent_publickey_to_external()
*
* Copies data from the internal to the external representation struct.
*
*/
static struct libssh2_agent_publickey *
agent_publickey_to_external(struct agent_publickey *node)
{
struct libssh2_agent_publickey *ext = &node->external;
ext->magic = AGENT_PUBLICKEY_MAGIC;
ext->node = node;
return ext;
}
/*
* libssh2_agent_init
*
* Init an ssh-agent handle. Returns the pointer to the handle.
*
*/
LIBSSH2_API LIBSSH2_AGENT *
libssh2_agent_init(LIBSSH2_SESSION *session)
{
LIBSSH2_AGENT *agent;
agent = LIBSSH2_CALLOC(session, sizeof *agent);
if(!agent) {
_libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate space for agent connection");
return NULL;
}
agent->fd = LIBSSH2_INVALID_SOCKET;
agent->session = session;
agent->identity_agent_path = NULL;
_libssh2_list_init(&agent->head);
#ifdef WIN32
agent->pipe = INVALID_HANDLE_VALUE;
memset(&agent->overlapped, 0, sizeof(OVERLAPPED));
agent->pending_io = FALSE;
#endif
return agent;
}
/*
* libssh2_agent_connect()
*
* Connect to an ssh-agent.
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int
libssh2_agent_connect(LIBSSH2_AGENT *agent)
{
int i, rc = -1;
for(i = 0; supported_backends[i].name; i++) {
agent->ops = supported_backends[i].ops;
rc = (agent->ops->connect)(agent);
if(!rc)
return 0;
}
return rc;
}
/*
* libssh2_agent_list_identities()
*
* Request ssh-agent to list identities.
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int
libssh2_agent_list_identities(LIBSSH2_AGENT *agent)
{
memset(&agent->transctx, 0, sizeof agent->transctx);
/* Abandon the last fetched identities */
agent_free_identities(agent);
return agent_list_identities(agent);
}
/*
* libssh2_agent_get_identity()
*
* Traverse the internal list of public keys. Pass NULL to 'prev' to get
* the first one. Or pass a pointer to the previously returned one to get the
* next.
*
* Returns:
* 0 if a fine public key was stored in 'store'
* 1 if end of public keys
* [negative] on errors
*/
LIBSSH2_API int
libssh2_agent_get_identity(LIBSSH2_AGENT *agent,
struct libssh2_agent_publickey **ext,
struct libssh2_agent_publickey *oprev)
{
struct agent_publickey *node;
if(oprev && oprev->node) {
/* we have a starting point */
struct agent_publickey *prev = oprev->node;
/* get the next node in the list */
node = _libssh2_list_next(&prev->node);
}
else
node = _libssh2_list_first(&agent->head);
if(!node)
/* no (more) node */
return 1;
*ext = agent_publickey_to_external(node);
return 0;
}
/*
* libssh2_agent_userauth()
*
* Do publickey user authentication with the help of ssh-agent.
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int
libssh2_agent_userauth(LIBSSH2_AGENT *agent,
const char *username,
struct libssh2_agent_publickey *identity)
{
void *abstract = agent;
int rc;
if(agent->session->userauth_pblc_state == libssh2_NB_state_idle) {
memset(&agent->transctx, 0, sizeof agent->transctx);
agent->identity = identity->node;
}
BLOCK_ADJUST(rc, agent->session,
_libssh2_userauth_publickey(agent->session, username,
strlen(username),
identity->blob,
identity->blob_len,
agent_sign,
&abstract));
return rc;
}
/*
* libssh2_agent_disconnect()
*
* Close a connection to an ssh-agent.
*
* Returns 0 if succeeded, or a negative value for error.
*/
LIBSSH2_API int
libssh2_agent_disconnect(LIBSSH2_AGENT *agent)
{
if(agent->ops && agent->fd != LIBSSH2_INVALID_SOCKET)
return agent->ops->disconnect(agent);
return 0;
}
/*
* libssh2_agent_free()
*
* Free an ssh-agent handle. This function also frees the internal
* collection of public keys.
*/
LIBSSH2_API void
libssh2_agent_free(LIBSSH2_AGENT *agent)
{
/* Allow connection freeing when the socket has lost its connection */
if(agent->fd != LIBSSH2_INVALID_SOCKET) {
libssh2_agent_disconnect(agent);
}
if(agent->identity_agent_path != NULL)
LIBSSH2_FREE(agent->session, agent->identity_agent_path);
agent_free_identities(agent);
LIBSSH2_FREE(agent->session, agent);
}
/*
* libssh2_agent_set_identity_path()
*
* Allows a custom agent socket path beyond SSH_AUTH_SOCK env
*
*/
LIBSSH2_API void
libssh2_agent_set_identity_path(LIBSSH2_AGENT *agent, const char *path)
{
if(agent->identity_agent_path) {
LIBSSH2_FREE(agent->session, agent->identity_agent_path);
agent->identity_agent_path = NULL;
}
if(path) {
size_t path_len = strlen(path);
if(path_len < SIZE_MAX - 1) {
char *path_buf = LIBSSH2_ALLOC(agent->session, path_len + 1);
memcpy(path_buf, path, path_len);
path_buf[path_len] = '\0';
agent->identity_agent_path = path_buf;
}
}
}
/*
* libssh2_agent_get_identity_path()
*
* Returns the custom agent socket path if set
*
*/
LIBSSH2_API const char *libssh2_agent_get_identity_path(LIBSSH2_AGENT *agent)
{
return agent->identity_agent_path;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/wincng.c | /*
* Copyright (C) 2013-2020 Marc Hoersken <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#ifdef LIBSSH2_WINCNG /* compile only if we build with wincng */
/* required for cross-compilation against the w64 mingw-runtime package */
#if defined(_WIN32_WINNT) && (_WIN32_WINNT < 0x0600)
#undef _WIN32_WINNT
#endif
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0600
#endif
/* specify the required libraries for dependencies using MSVC */
#ifdef _MSC_VER
#pragma comment(lib, "bcrypt.lib")
#ifdef HAVE_LIBCRYPT32
#pragma comment(lib, "crypt32.lib")
#endif
#endif
#include <windows.h>
#include <bcrypt.h>
#include <ntstatus.h>
#include <math.h>
#include "misc.h"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_LIBCRYPT32
#include <wincrypt.h>
#endif
#define PEM_RSA_HEADER "-----BEGIN RSA PRIVATE KEY-----"
#define PEM_RSA_FOOTER "-----END RSA PRIVATE KEY-----"
#define PEM_DSA_HEADER "-----BEGIN DSA PRIVATE KEY-----"
#define PEM_DSA_FOOTER "-----END DSA PRIVATE KEY-----"
/*******************************************************************/
/*
* Windows CNG backend: Missing definitions (for MinGW[-w64])
*/
#ifndef BCRYPT_SUCCESS
#define BCRYPT_SUCCESS(Status) (((NTSTATUS)(Status)) >= 0)
#endif
#ifndef BCRYPT_RNG_ALGORITHM
#define BCRYPT_RNG_ALGORITHM L"RNG"
#endif
#ifndef BCRYPT_MD5_ALGORITHM
#define BCRYPT_MD5_ALGORITHM L"MD5"
#endif
#ifndef BCRYPT_SHA1_ALGORITHM
#define BCRYPT_SHA1_ALGORITHM L"SHA1"
#endif
#ifndef BCRYPT_SHA256_ALGORITHM
#define BCRYPT_SHA256_ALGORITHM L"SHA256"
#endif
#ifndef BCRYPT_SHA384_ALGORITHM
#define BCRYPT_SHA384_ALGORITHM L"SHA384"
#endif
#ifndef BCRYPT_SHA512_ALGORITHM
#define BCRYPT_SHA512_ALGORITHM L"SHA512"
#endif
#ifndef BCRYPT_RSA_ALGORITHM
#define BCRYPT_RSA_ALGORITHM L"RSA"
#endif
#ifndef BCRYPT_DSA_ALGORITHM
#define BCRYPT_DSA_ALGORITHM L"DSA"
#endif
#ifndef BCRYPT_AES_ALGORITHM
#define BCRYPT_AES_ALGORITHM L"AES"
#endif
#ifndef BCRYPT_RC4_ALGORITHM
#define BCRYPT_RC4_ALGORITHM L"RC4"
#endif
#ifndef BCRYPT_3DES_ALGORITHM
#define BCRYPT_3DES_ALGORITHM L"3DES"
#endif
#ifndef BCRYPT_DH_ALGORITHM
#define BCRYPT_DH_ALGORITHM L"DH"
#endif
/* BCRYPT_KDF_RAW_SECRET is available from Windows 8.1 and onwards */
#ifndef BCRYPT_KDF_RAW_SECRET
#define BCRYPT_KDF_RAW_SECRET L"TRUNCATE"
#endif
#ifndef BCRYPT_ALG_HANDLE_HMAC_FLAG
#define BCRYPT_ALG_HANDLE_HMAC_FLAG 0x00000008
#endif
#ifndef BCRYPT_DSA_PUBLIC_BLOB
#define BCRYPT_DSA_PUBLIC_BLOB L"DSAPUBLICBLOB"
#endif
#ifndef BCRYPT_DSA_PUBLIC_MAGIC
#define BCRYPT_DSA_PUBLIC_MAGIC 0x42505344 /* DSPB */
#endif
#ifndef BCRYPT_DSA_PRIVATE_BLOB
#define BCRYPT_DSA_PRIVATE_BLOB L"DSAPRIVATEBLOB"
#endif
#ifndef BCRYPT_DSA_PRIVATE_MAGIC
#define BCRYPT_DSA_PRIVATE_MAGIC 0x56505344 /* DSPV */
#endif
#ifndef BCRYPT_RSAPUBLIC_BLOB
#define BCRYPT_RSAPUBLIC_BLOB L"RSAPUBLICBLOB"
#endif
#ifndef BCRYPT_RSAPUBLIC_MAGIC
#define BCRYPT_RSAPUBLIC_MAGIC 0x31415352 /* RSA1 */
#endif
#ifndef BCRYPT_RSAFULLPRIVATE_BLOB
#define BCRYPT_RSAFULLPRIVATE_BLOB L"RSAFULLPRIVATEBLOB"
#endif
#ifndef BCRYPT_RSAFULLPRIVATE_MAGIC
#define BCRYPT_RSAFULLPRIVATE_MAGIC 0x33415352 /* RSA3 */
#endif
#ifndef BCRYPT_KEY_DATA_BLOB
#define BCRYPT_KEY_DATA_BLOB L"KeyDataBlob"
#endif
#ifndef BCRYPT_MESSAGE_BLOCK_LENGTH
#define BCRYPT_MESSAGE_BLOCK_LENGTH L"MessageBlockLength"
#endif
#ifndef BCRYPT_NO_KEY_VALIDATION
#define BCRYPT_NO_KEY_VALIDATION 0x00000008
#endif
#ifndef BCRYPT_BLOCK_PADDING
#define BCRYPT_BLOCK_PADDING 0x00000001
#endif
#ifndef BCRYPT_PAD_NONE
#define BCRYPT_PAD_NONE 0x00000001
#endif
#ifndef BCRYPT_PAD_PKCS1
#define BCRYPT_PAD_PKCS1 0x00000002
#endif
#ifndef BCRYPT_PAD_OAEP
#define BCRYPT_PAD_OAEP 0x00000004
#endif
#ifndef BCRYPT_PAD_PSS
#define BCRYPT_PAD_PSS 0x00000008
#endif
#ifndef CRYPT_STRING_ANY
#define CRYPT_STRING_ANY 0x00000007
#endif
#ifndef LEGACY_RSAPRIVATE_BLOB
#define LEGACY_RSAPRIVATE_BLOB L"CAPIPRIVATEBLOB"
#endif
#ifndef PKCS_RSA_PRIVATE_KEY
#define PKCS_RSA_PRIVATE_KEY (LPCSTR)43
#endif
/*******************************************************************/
/*
* Windows CNG backend: Generic functions
*/
struct _libssh2_wincng_ctx _libssh2_wincng;
void
_libssh2_wincng_init(void)
{
int ret;
memset(&_libssh2_wincng, 0, sizeof(_libssh2_wincng));
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgRNG,
BCRYPT_RNG_ALGORITHM, NULL, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgRNG = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHashMD5,
BCRYPT_MD5_ALGORITHM, NULL, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgHashMD5 = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHashSHA1,
BCRYPT_SHA1_ALGORITHM, NULL, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgHashSHA1 = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHashSHA256,
BCRYPT_SHA256_ALGORITHM, NULL, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgHashSHA256 = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHashSHA384,
BCRYPT_SHA384_ALGORITHM, NULL, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgHashSHA384 = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHashSHA512,
BCRYPT_SHA512_ALGORITHM, NULL, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgHashSHA512 = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHmacMD5,
BCRYPT_MD5_ALGORITHM, NULL,
BCRYPT_ALG_HANDLE_HMAC_FLAG);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgHmacMD5 = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHmacSHA1,
BCRYPT_SHA1_ALGORITHM, NULL,
BCRYPT_ALG_HANDLE_HMAC_FLAG);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgHmacSHA1 = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHmacSHA256,
BCRYPT_SHA256_ALGORITHM, NULL,
BCRYPT_ALG_HANDLE_HMAC_FLAG);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgHmacSHA256 = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHmacSHA384,
BCRYPT_SHA384_ALGORITHM, NULL,
BCRYPT_ALG_HANDLE_HMAC_FLAG);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgHmacSHA384 = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHmacSHA512,
BCRYPT_SHA512_ALGORITHM, NULL,
BCRYPT_ALG_HANDLE_HMAC_FLAG);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgHmacSHA512 = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgRSA,
BCRYPT_RSA_ALGORITHM, NULL, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgRSA = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgDSA,
BCRYPT_DSA_ALGORITHM, NULL, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgDSA = NULL;
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgAES_CBC,
BCRYPT_AES_ALGORITHM, NULL, 0);
if(BCRYPT_SUCCESS(ret)) {
ret = BCryptSetProperty(_libssh2_wincng.hAlgAES_CBC,
BCRYPT_CHAINING_MODE,
(PBYTE)BCRYPT_CHAIN_MODE_CBC,
sizeof(BCRYPT_CHAIN_MODE_CBC), 0);
if(!BCRYPT_SUCCESS(ret)) {
ret = BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgAES_CBC, 0);
if(BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgAES_CBC = NULL;
}
}
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgAES_ECB,
BCRYPT_AES_ALGORITHM, NULL, 0);
if(BCRYPT_SUCCESS(ret)) {
ret = BCryptSetProperty(_libssh2_wincng.hAlgAES_ECB,
BCRYPT_CHAINING_MODE,
(PBYTE)BCRYPT_CHAIN_MODE_ECB,
sizeof(BCRYPT_CHAIN_MODE_ECB), 0);
if(!BCRYPT_SUCCESS(ret)) {
ret = BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgAES_ECB, 0);
if(BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgAES_ECB = NULL;
}
}
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgRC4_NA,
BCRYPT_RC4_ALGORITHM, NULL, 0);
if(BCRYPT_SUCCESS(ret)) {
ret = BCryptSetProperty(_libssh2_wincng.hAlgRC4_NA,
BCRYPT_CHAINING_MODE,
(PBYTE)BCRYPT_CHAIN_MODE_NA,
sizeof(BCRYPT_CHAIN_MODE_NA), 0);
if(!BCRYPT_SUCCESS(ret)) {
ret = BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgRC4_NA, 0);
if(BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgRC4_NA = NULL;
}
}
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlg3DES_CBC,
BCRYPT_3DES_ALGORITHM, NULL, 0);
if(BCRYPT_SUCCESS(ret)) {
ret = BCryptSetProperty(_libssh2_wincng.hAlg3DES_CBC,
BCRYPT_CHAINING_MODE,
(PBYTE)BCRYPT_CHAIN_MODE_CBC,
sizeof(BCRYPT_CHAIN_MODE_CBC), 0);
if(!BCRYPT_SUCCESS(ret)) {
ret = BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlg3DES_CBC,
0);
if(BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlg3DES_CBC = NULL;
}
}
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgDH,
BCRYPT_DH_ALGORITHM, NULL, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng.hAlgDH = NULL;
}
}
void
_libssh2_wincng_free(void)
{
if(_libssh2_wincng.hAlgRNG)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgRNG, 0);
if(_libssh2_wincng.hAlgHashMD5)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHashMD5, 0);
if(_libssh2_wincng.hAlgHashSHA1)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHashSHA1, 0);
if(_libssh2_wincng.hAlgHashSHA256)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHashSHA256, 0);
if(_libssh2_wincng.hAlgHashSHA384)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHashSHA384, 0);
if(_libssh2_wincng.hAlgHashSHA512)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHashSHA512, 0);
if(_libssh2_wincng.hAlgHmacMD5)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHmacMD5, 0);
if(_libssh2_wincng.hAlgHmacSHA1)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHmacSHA1, 0);
if(_libssh2_wincng.hAlgHmacSHA256)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHmacSHA256, 0);
if(_libssh2_wincng.hAlgHmacSHA384)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHmacSHA384, 0);
if(_libssh2_wincng.hAlgHmacSHA512)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHmacSHA512, 0);
if(_libssh2_wincng.hAlgRSA)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgRSA, 0);
if(_libssh2_wincng.hAlgDSA)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgDSA, 0);
if(_libssh2_wincng.hAlgAES_CBC)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgAES_CBC, 0);
if(_libssh2_wincng.hAlgRC4_NA)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgRC4_NA, 0);
if(_libssh2_wincng.hAlg3DES_CBC)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlg3DES_CBC, 0);
if(_libssh2_wincng.hAlgDH)
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgDH, 0);
memset(&_libssh2_wincng, 0, sizeof(_libssh2_wincng));
}
int
_libssh2_wincng_random(void *buf, int len)
{
int ret;
ret = BCryptGenRandom(_libssh2_wincng.hAlgRNG, buf, len, 0);
return BCRYPT_SUCCESS(ret) ? 0 : -1;
}
static void
_libssh2_wincng_safe_free(void *buf, int len)
{
#ifndef LIBSSH2_CLEAR_MEMORY
(void)len;
#endif
if(!buf)
return;
#ifdef LIBSSH2_CLEAR_MEMORY
if(len > 0)
SecureZeroMemory(buf, len);
#endif
free(buf);
}
/* Copy a big endian set of bits from src to dest.
* if the size of src is smaller than dest then pad the "left" (MSB)
* end with zeroes and copy the bits into the "right" (LSB) end. */
static void
memcpy_with_be_padding(unsigned char *dest, unsigned long dest_len,
unsigned char *src, unsigned long src_len)
{
if(dest_len > src_len) {
memset(dest, 0, dest_len - src_len);
}
memcpy((dest + dest_len) - src_len, src, src_len);
}
static int
round_down(int number, int multiple)
{
return (number / multiple) * multiple;
}
/*******************************************************************/
/*
* Windows CNG backend: Hash functions
*/
int
_libssh2_wincng_hash_init(_libssh2_wincng_hash_ctx *ctx,
BCRYPT_ALG_HANDLE hAlg, unsigned long hashlen,
unsigned char *key, unsigned long keylen)
{
BCRYPT_HASH_HANDLE hHash;
unsigned char *pbHashObject;
unsigned long dwHashObject, dwHash, cbData;
int ret;
ret = BCryptGetProperty(hAlg, BCRYPT_HASH_LENGTH,
(unsigned char *)&dwHash,
sizeof(dwHash),
&cbData, 0);
if((!BCRYPT_SUCCESS(ret)) || dwHash != hashlen) {
return -1;
}
ret = BCryptGetProperty(hAlg, BCRYPT_OBJECT_LENGTH,
(unsigned char *)&dwHashObject,
sizeof(dwHashObject),
&cbData, 0);
if(!BCRYPT_SUCCESS(ret)) {
return -1;
}
pbHashObject = malloc(dwHashObject);
if(!pbHashObject) {
return -1;
}
ret = BCryptCreateHash(hAlg, &hHash,
pbHashObject, dwHashObject,
key, keylen, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng_safe_free(pbHashObject, dwHashObject);
return -1;
}
ctx->hHash = hHash;
ctx->pbHashObject = pbHashObject;
ctx->dwHashObject = dwHashObject;
ctx->cbHash = dwHash;
return 0;
}
int
_libssh2_wincng_hash_update(_libssh2_wincng_hash_ctx *ctx,
const unsigned char *data, unsigned long datalen)
{
int ret;
ret = BCryptHashData(ctx->hHash, (unsigned char *)data, datalen, 0);
return BCRYPT_SUCCESS(ret) ? 0 : -1;
}
int
_libssh2_wincng_hash_final(_libssh2_wincng_hash_ctx *ctx,
unsigned char *hash)
{
int ret;
ret = BCryptFinishHash(ctx->hHash, hash, ctx->cbHash, 0);
BCryptDestroyHash(ctx->hHash);
ctx->hHash = NULL;
_libssh2_wincng_safe_free(ctx->pbHashObject, ctx->dwHashObject);
ctx->pbHashObject = NULL;
ctx->dwHashObject = 0;
return BCRYPT_SUCCESS(ret) ? 0 : -1;
}
int
_libssh2_wincng_hash(unsigned char *data, unsigned long datalen,
BCRYPT_ALG_HANDLE hAlg,
unsigned char *hash, unsigned long hashlen)
{
_libssh2_wincng_hash_ctx ctx;
int ret;
ret = _libssh2_wincng_hash_init(&ctx, hAlg, hashlen, NULL, 0);
if(!ret) {
ret = _libssh2_wincng_hash_update(&ctx, data, datalen);
ret |= _libssh2_wincng_hash_final(&ctx, hash);
}
return ret;
}
/*******************************************************************/
/*
* Windows CNG backend: HMAC functions
*/
int
_libssh2_wincng_hmac_final(_libssh2_wincng_hash_ctx *ctx,
unsigned char *hash)
{
int ret;
ret = BCryptFinishHash(ctx->hHash, hash, ctx->cbHash, 0);
return BCRYPT_SUCCESS(ret) ? 0 : -1;
}
void
_libssh2_wincng_hmac_cleanup(_libssh2_wincng_hash_ctx *ctx)
{
BCryptDestroyHash(ctx->hHash);
ctx->hHash = NULL;
_libssh2_wincng_safe_free(ctx->pbHashObject, ctx->dwHashObject);
ctx->pbHashObject = NULL;
ctx->dwHashObject = 0;
}
/*******************************************************************/
/*
* Windows CNG backend: Key functions
*/
int
_libssh2_wincng_key_sha1_verify(_libssh2_wincng_key_ctx *ctx,
const unsigned char *sig,
unsigned long sig_len,
const unsigned char *m,
unsigned long m_len,
unsigned long flags)
{
BCRYPT_PKCS1_PADDING_INFO paddingInfoPKCS1;
void *pPaddingInfo;
unsigned char *data, *hash;
unsigned long datalen, hashlen;
int ret;
datalen = m_len;
data = malloc(datalen);
if(!data) {
return -1;
}
hashlen = SHA_DIGEST_LENGTH;
hash = malloc(hashlen);
if(!hash) {
free(data);
return -1;
}
memcpy(data, m, datalen);
ret = _libssh2_wincng_hash(data, datalen,
_libssh2_wincng.hAlgHashSHA1,
hash, hashlen);
_libssh2_wincng_safe_free(data, datalen);
if(ret) {
_libssh2_wincng_safe_free(hash, hashlen);
return -1;
}
datalen = sig_len;
data = malloc(datalen);
if(!data) {
_libssh2_wincng_safe_free(hash, hashlen);
return -1;
}
if(flags & BCRYPT_PAD_PKCS1) {
paddingInfoPKCS1.pszAlgId = BCRYPT_SHA1_ALGORITHM;
pPaddingInfo = &paddingInfoPKCS1;
}
else
pPaddingInfo = NULL;
memcpy(data, sig, datalen);
ret = BCryptVerifySignature(ctx->hKey, pPaddingInfo,
hash, hashlen, data, datalen, flags);
_libssh2_wincng_safe_free(hash, hashlen);
_libssh2_wincng_safe_free(data, datalen);
return BCRYPT_SUCCESS(ret) ? 0 : -1;
}
#ifdef HAVE_LIBCRYPT32
static int
_libssh2_wincng_load_pem(LIBSSH2_SESSION *session,
const char *filename,
const unsigned char *passphrase,
const char *headerbegin,
const char *headerend,
unsigned char **data,
unsigned int *datalen)
{
FILE *fp;
int ret;
fp = fopen(filename, FOPEN_READTEXT);
if(!fp) {
return -1;
}
ret = _libssh2_pem_parse(session, headerbegin, headerend,
passphrase,
fp, data, datalen);
fclose(fp);
return ret;
}
static int
_libssh2_wincng_load_private(LIBSSH2_SESSION *session,
const char *filename,
const unsigned char *passphrase,
unsigned char **ppbEncoded,
unsigned long *pcbEncoded,
int tryLoadRSA, int tryLoadDSA)
{
unsigned char *data = NULL;
unsigned int datalen = 0;
int ret = -1;
if(ret && tryLoadRSA) {
ret = _libssh2_wincng_load_pem(session, filename, passphrase,
PEM_RSA_HEADER, PEM_RSA_FOOTER,
&data, &datalen);
}
if(ret && tryLoadDSA) {
ret = _libssh2_wincng_load_pem(session, filename, passphrase,
PEM_DSA_HEADER, PEM_DSA_FOOTER,
&data, &datalen);
}
if(!ret) {
*ppbEncoded = data;
*pcbEncoded = datalen;
}
return ret;
}
static int
_libssh2_wincng_load_private_memory(LIBSSH2_SESSION *session,
const char *privatekeydata,
size_t privatekeydata_len,
const unsigned char *passphrase,
unsigned char **ppbEncoded,
unsigned long *pcbEncoded,
int tryLoadRSA, int tryLoadDSA)
{
unsigned char *data = NULL;
unsigned int datalen = 0;
int ret = -1;
(void)passphrase;
if(ret && tryLoadRSA) {
ret = _libssh2_pem_parse_memory(session,
PEM_RSA_HEADER, PEM_RSA_FOOTER,
privatekeydata, privatekeydata_len,
&data, &datalen);
}
if(ret && tryLoadDSA) {
ret = _libssh2_pem_parse_memory(session,
PEM_DSA_HEADER, PEM_DSA_FOOTER,
privatekeydata, privatekeydata_len,
&data, &datalen);
}
if(!ret) {
*ppbEncoded = data;
*pcbEncoded = datalen;
}
return ret;
}
static int
_libssh2_wincng_asn_decode(unsigned char *pbEncoded,
unsigned long cbEncoded,
LPCSTR lpszStructType,
unsigned char **ppbDecoded,
unsigned long *pcbDecoded)
{
unsigned char *pbDecoded = NULL;
unsigned long cbDecoded = 0;
int ret;
ret = CryptDecodeObjectEx(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
lpszStructType,
pbEncoded, cbEncoded, 0, NULL,
NULL, &cbDecoded);
if(!ret) {
return -1;
}
pbDecoded = malloc(cbDecoded);
if(!pbDecoded) {
return -1;
}
ret = CryptDecodeObjectEx(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
lpszStructType,
pbEncoded, cbEncoded, 0, NULL,
pbDecoded, &cbDecoded);
if(!ret) {
_libssh2_wincng_safe_free(pbDecoded, cbDecoded);
return -1;
}
*ppbDecoded = pbDecoded;
*pcbDecoded = cbDecoded;
return 0;
}
static int
_libssh2_wincng_bn_ltob(unsigned char *pbInput,
unsigned long cbInput,
unsigned char **ppbOutput,
unsigned long *pcbOutput)
{
unsigned char *pbOutput;
unsigned long cbOutput, index, offset, length;
if(cbInput < 1) {
return 0;
}
offset = 0;
length = cbInput - 1;
cbOutput = cbInput;
if(pbInput[length] & (1 << 7)) {
offset++;
cbOutput += offset;
}
pbOutput = (unsigned char *)malloc(cbOutput);
if(!pbOutput) {
return -1;
}
pbOutput[0] = 0;
for(index = 0; ((index + offset) < cbOutput)
&& (index < cbInput); index++) {
pbOutput[index + offset] = pbInput[length - index];
}
*ppbOutput = pbOutput;
*pcbOutput = cbOutput;
return 0;
}
static int
_libssh2_wincng_asn_decode_bn(unsigned char *pbEncoded,
unsigned long cbEncoded,
unsigned char **ppbDecoded,
unsigned long *pcbDecoded)
{
unsigned char *pbDecoded = NULL, *pbInteger;
unsigned long cbDecoded = 0, cbInteger;
int ret;
ret = _libssh2_wincng_asn_decode(pbEncoded, cbEncoded,
X509_MULTI_BYTE_UINT,
&pbInteger, &cbInteger);
if(!ret) {
ret = _libssh2_wincng_bn_ltob(((PCRYPT_DATA_BLOB)pbInteger)->pbData,
((PCRYPT_DATA_BLOB)pbInteger)->cbData,
&pbDecoded, &cbDecoded);
if(!ret) {
*ppbDecoded = pbDecoded;
*pcbDecoded = cbDecoded;
}
_libssh2_wincng_safe_free(pbInteger, cbInteger);
}
return ret;
}
static int
_libssh2_wincng_asn_decode_bns(unsigned char *pbEncoded,
unsigned long cbEncoded,
unsigned char ***prpbDecoded,
unsigned long **prcbDecoded,
unsigned long *pcbCount)
{
PCRYPT_DER_BLOB pBlob;
unsigned char *pbDecoded, **rpbDecoded;
unsigned long cbDecoded, *rcbDecoded, index, length;
int ret;
ret = _libssh2_wincng_asn_decode(pbEncoded, cbEncoded,
X509_SEQUENCE_OF_ANY,
&pbDecoded, &cbDecoded);
if(!ret) {
length = ((PCRYPT_DATA_BLOB)pbDecoded)->cbData;
rpbDecoded = malloc(sizeof(PBYTE) * length);
if(rpbDecoded) {
rcbDecoded = malloc(sizeof(DWORD) * length);
if(rcbDecoded) {
for(index = 0; index < length; index++) {
pBlob = &((PCRYPT_DER_BLOB)
((PCRYPT_DATA_BLOB)pbDecoded)->pbData)[index];
ret = _libssh2_wincng_asn_decode_bn(pBlob->pbData,
pBlob->cbData,
&rpbDecoded[index],
&rcbDecoded[index]);
if(ret)
break;
}
if(!ret) {
*prpbDecoded = rpbDecoded;
*prcbDecoded = rcbDecoded;
*pcbCount = length;
}
else {
for(length = 0; length < index; length++) {
_libssh2_wincng_safe_free(rpbDecoded[length],
rcbDecoded[length]);
rpbDecoded[length] = NULL;
rcbDecoded[length] = 0;
}
free(rpbDecoded);
free(rcbDecoded);
}
}
else {
free(rpbDecoded);
ret = -1;
}
}
else {
ret = -1;
}
_libssh2_wincng_safe_free(pbDecoded, cbDecoded);
}
return ret;
}
#endif /* HAVE_LIBCRYPT32 */
static unsigned long
_libssh2_wincng_bn_size(const unsigned char *bignum,
unsigned long length)
{
unsigned long offset;
if(!bignum)
return 0;
length--;
offset = 0;
while(!(*(bignum + offset)) && (offset < length))
offset++;
length++;
return length - offset;
}
/*******************************************************************/
/*
* Windows CNG backend: RSA functions
*/
int
_libssh2_wincng_rsa_new(libssh2_rsa_ctx **rsa,
const unsigned char *edata,
unsigned long elen,
const unsigned char *ndata,
unsigned long nlen,
const unsigned char *ddata,
unsigned long dlen,
const unsigned char *pdata,
unsigned long plen,
const unsigned char *qdata,
unsigned long qlen,
const unsigned char *e1data,
unsigned long e1len,
const unsigned char *e2data,
unsigned long e2len,
const unsigned char *coeffdata,
unsigned long coefflen)
{
BCRYPT_KEY_HANDLE hKey;
BCRYPT_RSAKEY_BLOB *rsakey;
LPCWSTR lpszBlobType;
unsigned char *key;
unsigned long keylen, offset, mlen, p1len = 0, p2len = 0;
int ret;
mlen = max(_libssh2_wincng_bn_size(ndata, nlen),
_libssh2_wincng_bn_size(ddata, dlen));
offset = sizeof(BCRYPT_RSAKEY_BLOB);
keylen = offset + elen + mlen;
if(ddata && dlen > 0) {
p1len = max(_libssh2_wincng_bn_size(pdata, plen),
_libssh2_wincng_bn_size(e1data, e1len));
p2len = max(_libssh2_wincng_bn_size(qdata, qlen),
_libssh2_wincng_bn_size(e2data, e2len));
keylen += p1len * 3 + p2len * 2 + mlen;
}
key = malloc(keylen);
if(!key) {
return -1;
}
memset(key, 0, keylen);
/* https://msdn.microsoft.com/library/windows/desktop/aa375531.aspx */
rsakey = (BCRYPT_RSAKEY_BLOB *)key;
rsakey->BitLength = mlen * 8;
rsakey->cbPublicExp = elen;
rsakey->cbModulus = mlen;
memcpy(key + offset, edata, elen);
offset += elen;
if(nlen < mlen)
memcpy(key + offset + mlen - nlen, ndata, nlen);
else
memcpy(key + offset, ndata + nlen - mlen, mlen);
if(ddata && dlen > 0) {
offset += mlen;
if(plen < p1len)
memcpy(key + offset + p1len - plen, pdata, plen);
else
memcpy(key + offset, pdata + plen - p1len, p1len);
offset += p1len;
if(qlen < p2len)
memcpy(key + offset + p2len - qlen, qdata, qlen);
else
memcpy(key + offset, qdata + qlen - p2len, p2len);
offset += p2len;
if(e1len < p1len)
memcpy(key + offset + p1len - e1len, e1data, e1len);
else
memcpy(key + offset, e1data + e1len - p1len, p1len);
offset += p1len;
if(e2len < p2len)
memcpy(key + offset + p2len - e2len, e2data, e2len);
else
memcpy(key + offset, e2data + e2len - p2len, p2len);
offset += p2len;
if(coefflen < p1len)
memcpy(key + offset + p1len - coefflen, coeffdata, coefflen);
else
memcpy(key + offset, coeffdata + coefflen - p1len, p1len);
offset += p1len;
if(dlen < mlen)
memcpy(key + offset + mlen - dlen, ddata, dlen);
else
memcpy(key + offset, ddata + dlen - mlen, mlen);
lpszBlobType = BCRYPT_RSAFULLPRIVATE_BLOB;
rsakey->Magic = BCRYPT_RSAFULLPRIVATE_MAGIC;
rsakey->cbPrime1 = p1len;
rsakey->cbPrime2 = p2len;
}
else {
lpszBlobType = BCRYPT_RSAPUBLIC_BLOB;
rsakey->Magic = BCRYPT_RSAPUBLIC_MAGIC;
rsakey->cbPrime1 = 0;
rsakey->cbPrime2 = 0;
}
ret = BCryptImportKeyPair(_libssh2_wincng.hAlgRSA, NULL, lpszBlobType,
&hKey, key, keylen, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng_safe_free(key, keylen);
return -1;
}
*rsa = malloc(sizeof(libssh2_rsa_ctx));
if(!(*rsa)) {
BCryptDestroyKey(hKey);
_libssh2_wincng_safe_free(key, keylen);
return -1;
}
(*rsa)->hKey = hKey;
(*rsa)->pbKeyObject = key;
(*rsa)->cbKeyObject = keylen;
return 0;
}
#ifdef HAVE_LIBCRYPT32
static int
_libssh2_wincng_rsa_new_private_parse(libssh2_rsa_ctx **rsa,
LIBSSH2_SESSION *session,
unsigned char *pbEncoded,
unsigned long cbEncoded)
{
BCRYPT_KEY_HANDLE hKey;
unsigned char *pbStructInfo;
unsigned long cbStructInfo;
int ret;
(void)session;
ret = _libssh2_wincng_asn_decode(pbEncoded, cbEncoded,
PKCS_RSA_PRIVATE_KEY,
&pbStructInfo, &cbStructInfo);
_libssh2_wincng_safe_free(pbEncoded, cbEncoded);
if(ret) {
return -1;
}
ret = BCryptImportKeyPair(_libssh2_wincng.hAlgRSA, NULL,
LEGACY_RSAPRIVATE_BLOB, &hKey,
pbStructInfo, cbStructInfo, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng_safe_free(pbStructInfo, cbStructInfo);
return -1;
}
*rsa = malloc(sizeof(libssh2_rsa_ctx));
if(!(*rsa)) {
BCryptDestroyKey(hKey);
_libssh2_wincng_safe_free(pbStructInfo, cbStructInfo);
return -1;
}
(*rsa)->hKey = hKey;
(*rsa)->pbKeyObject = pbStructInfo;
(*rsa)->cbKeyObject = cbStructInfo;
return 0;
}
#endif /* HAVE_LIBCRYPT32 */
int
_libssh2_wincng_rsa_new_private(libssh2_rsa_ctx **rsa,
LIBSSH2_SESSION *session,
const char *filename,
const unsigned char *passphrase)
{
#ifdef HAVE_LIBCRYPT32
unsigned char *pbEncoded;
unsigned long cbEncoded;
int ret;
(void)session;
ret = _libssh2_wincng_load_private(session, filename, passphrase,
&pbEncoded, &cbEncoded, 1, 0);
if(ret) {
return -1;
}
return _libssh2_wincng_rsa_new_private_parse(rsa, session,
pbEncoded, cbEncoded);
#else
(void)rsa;
(void)filename;
(void)passphrase;
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to load RSA key from private key file: "
"Method unsupported in Windows CNG backend");
#endif /* HAVE_LIBCRYPT32 */
}
int
_libssh2_wincng_rsa_new_private_frommemory(libssh2_rsa_ctx **rsa,
LIBSSH2_SESSION *session,
const char *filedata,
size_t filedata_len,
const unsigned char *passphrase)
{
#ifdef HAVE_LIBCRYPT32
unsigned char *pbEncoded;
unsigned long cbEncoded;
int ret;
(void)session;
ret = _libssh2_wincng_load_private_memory(session, filedata, filedata_len,
passphrase,
&pbEncoded, &cbEncoded, 1, 0);
if(ret) {
return -1;
}
return _libssh2_wincng_rsa_new_private_parse(rsa, session,
pbEncoded, cbEncoded);
#else
(void)rsa;
(void)filedata;
(void)filedata_len;
(void)passphrase;
return _libssh2_error(session, LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unable to extract private key from memory: "
"Method unsupported in Windows CNG backend");
#endif /* HAVE_LIBCRYPT32 */
}
int
_libssh2_wincng_rsa_sha1_verify(libssh2_rsa_ctx *rsa,
const unsigned char *sig,
unsigned long sig_len,
const unsigned char *m,
unsigned long m_len)
{
return _libssh2_wincng_key_sha1_verify(rsa, sig, sig_len, m, m_len,
BCRYPT_PAD_PKCS1);
}
int
_libssh2_wincng_rsa_sha1_sign(LIBSSH2_SESSION *session,
libssh2_rsa_ctx *rsa,
const unsigned char *hash,
size_t hash_len,
unsigned char **signature,
size_t *signature_len)
{
BCRYPT_PKCS1_PADDING_INFO paddingInfo;
unsigned char *data, *sig;
unsigned long cbData, datalen, siglen;
int ret;
datalen = (unsigned long)hash_len;
data = malloc(datalen);
if(!data) {
return -1;
}
paddingInfo.pszAlgId = BCRYPT_SHA1_ALGORITHM;
memcpy(data, hash, datalen);
ret = BCryptSignHash(rsa->hKey, &paddingInfo,
data, datalen, NULL, 0,
&cbData, BCRYPT_PAD_PKCS1);
if(BCRYPT_SUCCESS(ret)) {
siglen = cbData;
sig = LIBSSH2_ALLOC(session, siglen);
if(sig) {
ret = BCryptSignHash(rsa->hKey, &paddingInfo,
data, datalen, sig, siglen,
&cbData, BCRYPT_PAD_PKCS1);
if(BCRYPT_SUCCESS(ret)) {
*signature_len = siglen;
*signature = sig;
}
else {
LIBSSH2_FREE(session, sig);
}
}
else
ret = STATUS_NO_MEMORY;
}
_libssh2_wincng_safe_free(data, datalen);
return BCRYPT_SUCCESS(ret) ? 0 : -1;
}
void
_libssh2_wincng_rsa_free(libssh2_rsa_ctx *rsa)
{
if(!rsa)
return;
BCryptDestroyKey(rsa->hKey);
rsa->hKey = NULL;
_libssh2_wincng_safe_free(rsa->pbKeyObject, rsa->cbKeyObject);
_libssh2_wincng_safe_free(rsa, sizeof(libssh2_rsa_ctx));
}
/*******************************************************************/
/*
* Windows CNG backend: DSA functions
*/
#if LIBSSH2_DSA
int
_libssh2_wincng_dsa_new(libssh2_dsa_ctx **dsa,
const unsigned char *pdata,
unsigned long plen,
const unsigned char *qdata,
unsigned long qlen,
const unsigned char *gdata,
unsigned long glen,
const unsigned char *ydata,
unsigned long ylen,
const unsigned char *xdata,
unsigned long xlen)
{
BCRYPT_KEY_HANDLE hKey;
BCRYPT_DSA_KEY_BLOB *dsakey;
LPCWSTR lpszBlobType;
unsigned char *key;
unsigned long keylen, offset, length;
int ret;
length = max(max(_libssh2_wincng_bn_size(pdata, plen),
_libssh2_wincng_bn_size(gdata, glen)),
_libssh2_wincng_bn_size(ydata, ylen));
offset = sizeof(BCRYPT_DSA_KEY_BLOB);
keylen = offset + length * 3;
if(xdata && xlen > 0)
keylen += 20;
key = malloc(keylen);
if(!key) {
return -1;
}
memset(key, 0, keylen);
/* https://msdn.microsoft.com/library/windows/desktop/aa833126.aspx */
dsakey = (BCRYPT_DSA_KEY_BLOB *)key;
dsakey->cbKey = length;
memset(dsakey->Count, -1, sizeof(dsakey->Count));
memset(dsakey->Seed, -1, sizeof(dsakey->Seed));
if(qlen < 20)
memcpy(dsakey->q + 20 - qlen, qdata, qlen);
else
memcpy(dsakey->q, qdata + qlen - 20, 20);
if(plen < length)
memcpy(key + offset + length - plen, pdata, plen);
else
memcpy(key + offset, pdata + plen - length, length);
offset += length;
if(glen < length)
memcpy(key + offset + length - glen, gdata, glen);
else
memcpy(key + offset, gdata + glen - length, length);
offset += length;
if(ylen < length)
memcpy(key + offset + length - ylen, ydata, ylen);
else
memcpy(key + offset, ydata + ylen - length, length);
if(xdata && xlen > 0) {
offset += length;
if(xlen < 20)
memcpy(key + offset + 20 - xlen, xdata, xlen);
else
memcpy(key + offset, xdata + xlen - 20, 20);
lpszBlobType = BCRYPT_DSA_PRIVATE_BLOB;
dsakey->dwMagic = BCRYPT_DSA_PRIVATE_MAGIC;
}
else {
lpszBlobType = BCRYPT_DSA_PUBLIC_BLOB;
dsakey->dwMagic = BCRYPT_DSA_PUBLIC_MAGIC;
}
ret = BCryptImportKeyPair(_libssh2_wincng.hAlgDSA, NULL, lpszBlobType,
&hKey, key, keylen, 0);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng_safe_free(key, keylen);
return -1;
}
*dsa = malloc(sizeof(libssh2_dsa_ctx));
if(!(*dsa)) {
BCryptDestroyKey(hKey);
_libssh2_wincng_safe_free(key, keylen);
return -1;
}
(*dsa)->hKey = hKey;
(*dsa)->pbKeyObject = key;
(*dsa)->cbKeyObject = keylen;
return 0;
}
#ifdef HAVE_LIBCRYPT32
static int
_libssh2_wincng_dsa_new_private_parse(libssh2_dsa_ctx **dsa,
LIBSSH2_SESSION *session,
unsigned char *pbEncoded,
unsigned long cbEncoded)
{
unsigned char **rpbDecoded;
unsigned long *rcbDecoded, index, length;
int ret;
(void)session;
ret = _libssh2_wincng_asn_decode_bns(pbEncoded, cbEncoded,
&rpbDecoded, &rcbDecoded, &length);
_libssh2_wincng_safe_free(pbEncoded, cbEncoded);
if(ret) {
return -1;
}
if(length == 6) {
ret = _libssh2_wincng_dsa_new(dsa,
rpbDecoded[1], rcbDecoded[1],
rpbDecoded[2], rcbDecoded[2],
rpbDecoded[3], rcbDecoded[3],
rpbDecoded[4], rcbDecoded[4],
rpbDecoded[5], rcbDecoded[5]);
}
else {
ret = -1;
}
for(index = 0; index < length; index++) {
_libssh2_wincng_safe_free(rpbDecoded[index], rcbDecoded[index]);
rpbDecoded[index] = NULL;
rcbDecoded[index] = 0;
}
free(rpbDecoded);
free(rcbDecoded);
return ret;
}
#endif /* HAVE_LIBCRYPT32 */
int
_libssh2_wincng_dsa_new_private(libssh2_dsa_ctx **dsa,
LIBSSH2_SESSION *session,
const char *filename,
const unsigned char *passphrase)
{
#ifdef HAVE_LIBCRYPT32
unsigned char *pbEncoded;
unsigned long cbEncoded;
int ret;
ret = _libssh2_wincng_load_private(session, filename, passphrase,
&pbEncoded, &cbEncoded, 0, 1);
if(ret) {
return -1;
}
return _libssh2_wincng_dsa_new_private_parse(dsa, session,
pbEncoded, cbEncoded);
#else
(void)dsa;
(void)filename;
(void)passphrase;
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to load DSA key from private key file: "
"Method unsupported in Windows CNG backend");
#endif /* HAVE_LIBCRYPT32 */
}
int
_libssh2_wincng_dsa_new_private_frommemory(libssh2_dsa_ctx **dsa,
LIBSSH2_SESSION *session,
const char *filedata,
size_t filedata_len,
const unsigned char *passphrase)
{
#ifdef HAVE_LIBCRYPT32
unsigned char *pbEncoded;
unsigned long cbEncoded;
int ret;
ret = _libssh2_wincng_load_private_memory(session, filedata, filedata_len,
passphrase,
&pbEncoded, &cbEncoded, 0, 1);
if(ret) {
return -1;
}
return _libssh2_wincng_dsa_new_private_parse(dsa, session,
pbEncoded, cbEncoded);
#else
(void)dsa;
(void)filedata;
(void)filedata_len;
(void)passphrase;
return _libssh2_error(session, LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unable to extract private key from memory: "
"Method unsupported in Windows CNG backend");
#endif /* HAVE_LIBCRYPT32 */
}
int
_libssh2_wincng_dsa_sha1_verify(libssh2_dsa_ctx *dsa,
const unsigned char *sig_fixed,
const unsigned char *m,
unsigned long m_len)
{
return _libssh2_wincng_key_sha1_verify(dsa, sig_fixed, 40, m, m_len, 0);
}
int
_libssh2_wincng_dsa_sha1_sign(libssh2_dsa_ctx *dsa,
const unsigned char *hash,
unsigned long hash_len,
unsigned char *sig_fixed)
{
unsigned char *data, *sig;
unsigned long cbData, datalen, siglen;
int ret;
datalen = hash_len;
data = malloc(datalen);
if(!data) {
return -1;
}
memcpy(data, hash, datalen);
ret = BCryptSignHash(dsa->hKey, NULL, data, datalen,
NULL, 0, &cbData, 0);
if(BCRYPT_SUCCESS(ret)) {
siglen = cbData;
if(siglen == 40) {
sig = malloc(siglen);
if(sig) {
ret = BCryptSignHash(dsa->hKey, NULL, data, datalen,
sig, siglen, &cbData, 0);
if(BCRYPT_SUCCESS(ret)) {
memcpy(sig_fixed, sig, siglen);
}
_libssh2_wincng_safe_free(sig, siglen);
}
else
ret = STATUS_NO_MEMORY;
}
else
ret = STATUS_NO_MEMORY;
}
_libssh2_wincng_safe_free(data, datalen);
return BCRYPT_SUCCESS(ret) ? 0 : -1;
}
void
_libssh2_wincng_dsa_free(libssh2_dsa_ctx *dsa)
{
if(!dsa)
return;
BCryptDestroyKey(dsa->hKey);
dsa->hKey = NULL;
_libssh2_wincng_safe_free(dsa->pbKeyObject, dsa->cbKeyObject);
_libssh2_wincng_safe_free(dsa, sizeof(libssh2_dsa_ctx));
}
#endif
/*******************************************************************/
/*
* Windows CNG backend: Key functions
*/
#ifdef HAVE_LIBCRYPT32
static unsigned long
_libssh2_wincng_pub_priv_write(unsigned char *key,
unsigned long offset,
const unsigned char *bignum,
const unsigned long length)
{
_libssh2_htonu32(key + offset, length);
offset += 4;
memcpy(key + offset, bignum, length);
offset += length;
return offset;
}
static int
_libssh2_wincng_pub_priv_keyfile_parse(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
unsigned char *pbEncoded,
unsigned long cbEncoded)
{
unsigned char **rpbDecoded;
unsigned long *rcbDecoded;
unsigned char *key = NULL, *mth = NULL;
unsigned long keylen = 0, mthlen = 0;
unsigned long index, offset, length;
int ret;
ret = _libssh2_wincng_asn_decode_bns(pbEncoded, cbEncoded,
&rpbDecoded, &rcbDecoded, &length);
_libssh2_wincng_safe_free(pbEncoded, cbEncoded);
if(ret) {
return -1;
}
if(length == 9) { /* private RSA key */
mthlen = 7;
mth = LIBSSH2_ALLOC(session, mthlen);
if(mth) {
memcpy(mth, "ssh-rsa", mthlen);
}
else {
ret = -1;
}
keylen = 4 + mthlen + 4 + rcbDecoded[2] + 4 + rcbDecoded[1];
key = LIBSSH2_ALLOC(session, keylen);
if(key) {
offset = _libssh2_wincng_pub_priv_write(key, 0, mth, mthlen);
offset = _libssh2_wincng_pub_priv_write(key, offset,
rpbDecoded[2],
rcbDecoded[2]);
_libssh2_wincng_pub_priv_write(key, offset,
rpbDecoded[1],
rcbDecoded[1]);
}
else {
ret = -1;
}
}
else if(length == 6) { /* private DSA key */
mthlen = 7;
mth = LIBSSH2_ALLOC(session, mthlen);
if(mth) {
memcpy(mth, "ssh-dss", mthlen);
}
else {
ret = -1;
}
keylen = 4 + mthlen + 4 + rcbDecoded[1] + 4 + rcbDecoded[2]
+ 4 + rcbDecoded[3] + 4 + rcbDecoded[4];
key = LIBSSH2_ALLOC(session, keylen);
if(key) {
offset = _libssh2_wincng_pub_priv_write(key, 0, mth, mthlen);
offset = _libssh2_wincng_pub_priv_write(key, offset,
rpbDecoded[1],
rcbDecoded[1]);
offset = _libssh2_wincng_pub_priv_write(key, offset,
rpbDecoded[2],
rcbDecoded[2]);
offset = _libssh2_wincng_pub_priv_write(key, offset,
rpbDecoded[3],
rcbDecoded[3]);
_libssh2_wincng_pub_priv_write(key, offset,
rpbDecoded[4],
rcbDecoded[4]);
}
else {
ret = -1;
}
}
else {
ret = -1;
}
for(index = 0; index < length; index++) {
_libssh2_wincng_safe_free(rpbDecoded[index], rcbDecoded[index]);
rpbDecoded[index] = NULL;
rcbDecoded[index] = 0;
}
free(rpbDecoded);
free(rcbDecoded);
if(ret) {
if(mth)
LIBSSH2_FREE(session, mth);
if(key)
LIBSSH2_FREE(session, key);
}
else {
*method = mth;
*method_len = mthlen;
*pubkeydata = key;
*pubkeydata_len = keylen;
}
return ret;
}
#endif /* HAVE_LIBCRYPT32 */
int
_libssh2_wincng_pub_priv_keyfile(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekey,
const char *passphrase)
{
#ifdef HAVE_LIBCRYPT32
unsigned char *pbEncoded;
unsigned long cbEncoded;
int ret;
ret = _libssh2_wincng_load_private(session, privatekey,
(const unsigned char *)passphrase,
&pbEncoded, &cbEncoded, 1, 1);
if(ret) {
return -1;
}
return _libssh2_wincng_pub_priv_keyfile_parse(session, method, method_len,
pubkeydata, pubkeydata_len,
pbEncoded, cbEncoded);
#else
(void)method;
(void)method_len;
(void)pubkeydata;
(void)pubkeydata_len;
(void)privatekey;
(void)passphrase;
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Unable to load public key from private key file: "
"Method unsupported in Windows CNG backend");
#endif /* HAVE_LIBCRYPT32 */
}
int
_libssh2_wincng_pub_priv_keyfilememory(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekeydata,
size_t privatekeydata_len,
const char *passphrase)
{
#ifdef HAVE_LIBCRYPT32
unsigned char *pbEncoded;
unsigned long cbEncoded;
int ret;
ret = _libssh2_wincng_load_private_memory(session, privatekeydata,
privatekeydata_len,
(const unsigned char *)
passphrase,
&pbEncoded, &cbEncoded, 1, 1);
if(ret) {
return -1;
}
return _libssh2_wincng_pub_priv_keyfile_parse(session, method, method_len,
pubkeydata, pubkeydata_len,
pbEncoded, cbEncoded);
#else
(void)method;
(void)method_len;
(void)pubkeydata_len;
(void)pubkeydata;
(void)privatekeydata;
(void)privatekeydata_len;
(void)passphrase;
return _libssh2_error(session, LIBSSH2_ERROR_METHOD_NOT_SUPPORTED,
"Unable to extract public key from private key in memory: "
"Method unsupported in Windows CNG backend");
#endif /* HAVE_LIBCRYPT32 */
}
/*******************************************************************/
/*
* Windows CNG backend: Cipher functions
*/
int
_libssh2_wincng_cipher_init(_libssh2_cipher_ctx *ctx,
_libssh2_cipher_type(type),
unsigned char *iv,
unsigned char *secret,
int encrypt)
{
BCRYPT_KEY_HANDLE hKey;
BCRYPT_KEY_DATA_BLOB_HEADER *header;
unsigned char *pbKeyObject, *pbIV, *key, *pbCtr, *pbIVCopy;
unsigned long dwKeyObject, dwIV, dwCtrLength, dwBlockLength,
cbData, keylen;
int ret;
(void)encrypt;
ret = BCryptGetProperty(*type.phAlg, BCRYPT_OBJECT_LENGTH,
(unsigned char *)&dwKeyObject,
sizeof(dwKeyObject),
&cbData, 0);
if(!BCRYPT_SUCCESS(ret)) {
return -1;
}
ret = BCryptGetProperty(*type.phAlg, BCRYPT_BLOCK_LENGTH,
(unsigned char *)&dwBlockLength,
sizeof(dwBlockLength),
&cbData, 0);
if(!BCRYPT_SUCCESS(ret)) {
return -1;
}
pbKeyObject = malloc(dwKeyObject);
if(!pbKeyObject) {
return -1;
}
keylen = sizeof(BCRYPT_KEY_DATA_BLOB_HEADER) + type.dwKeyLength;
key = malloc(keylen);
if(!key) {
free(pbKeyObject);
return -1;
}
header = (BCRYPT_KEY_DATA_BLOB_HEADER *)key;
header->dwMagic = BCRYPT_KEY_DATA_BLOB_MAGIC;
header->dwVersion = BCRYPT_KEY_DATA_BLOB_VERSION1;
header->cbKeyData = type.dwKeyLength;
memcpy(key + sizeof(BCRYPT_KEY_DATA_BLOB_HEADER),
secret, type.dwKeyLength);
ret = BCryptImportKey(*type.phAlg, NULL, BCRYPT_KEY_DATA_BLOB, &hKey,
pbKeyObject, dwKeyObject, key, keylen, 0);
_libssh2_wincng_safe_free(key, keylen);
if(!BCRYPT_SUCCESS(ret)) {
_libssh2_wincng_safe_free(pbKeyObject, dwKeyObject);
return -1;
}
pbIV = NULL;
pbCtr = NULL;
dwIV = 0;
dwCtrLength = 0;
if(type.useIV || type.ctrMode) {
pbIVCopy = malloc(dwBlockLength);
if(!pbIVCopy) {
BCryptDestroyKey(hKey);
_libssh2_wincng_safe_free(pbKeyObject, dwKeyObject);
return -1;
}
memcpy(pbIVCopy, iv, dwBlockLength);
if(type.ctrMode) {
pbCtr = pbIVCopy;
dwCtrLength = dwBlockLength;
}
else if(type.useIV) {
pbIV = pbIVCopy;
dwIV = dwBlockLength;
}
}
ctx->hKey = hKey;
ctx->pbKeyObject = pbKeyObject;
ctx->pbIV = pbIV;
ctx->pbCtr = pbCtr;
ctx->dwKeyObject = dwKeyObject;
ctx->dwIV = dwIV;
ctx->dwBlockLength = dwBlockLength;
ctx->dwCtrLength = dwCtrLength;
return 0;
}
int
_libssh2_wincng_cipher_crypt(_libssh2_cipher_ctx *ctx,
_libssh2_cipher_type(type),
int encrypt,
unsigned char *block,
size_t blocklen)
{
unsigned char *pbOutput, *pbInput;
unsigned long cbOutput, cbInput;
int ret;
(void)type;
cbInput = (unsigned long)blocklen;
if(type.ctrMode) {
pbInput = ctx->pbCtr;
}
else {
pbInput = block;
}
if(encrypt || type.ctrMode) {
ret = BCryptEncrypt(ctx->hKey, pbInput, cbInput, NULL,
ctx->pbIV, ctx->dwIV, NULL, 0, &cbOutput, 0);
}
else {
ret = BCryptDecrypt(ctx->hKey, pbInput, cbInput, NULL,
ctx->pbIV, ctx->dwIV, NULL, 0, &cbOutput, 0);
}
if(BCRYPT_SUCCESS(ret)) {
pbOutput = malloc(cbOutput);
if(pbOutput) {
if(encrypt || type.ctrMode) {
ret = BCryptEncrypt(ctx->hKey, pbInput, cbInput, NULL,
ctx->pbIV, ctx->dwIV,
pbOutput, cbOutput, &cbOutput, 0);
}
else {
ret = BCryptDecrypt(ctx->hKey, pbInput, cbInput, NULL,
ctx->pbIV, ctx->dwIV,
pbOutput, cbOutput, &cbOutput, 0);
}
if(BCRYPT_SUCCESS(ret)) {
if(type.ctrMode) {
_libssh2_xor_data(block, block, pbOutput, blocklen);
_libssh2_aes_ctr_increment(ctx->pbCtr, ctx->dwCtrLength);
}
else {
memcpy(block, pbOutput, cbOutput);
}
}
_libssh2_wincng_safe_free(pbOutput, cbOutput);
}
else
ret = STATUS_NO_MEMORY;
}
return BCRYPT_SUCCESS(ret) ? 0 : -1;
}
void
_libssh2_wincng_cipher_dtor(_libssh2_cipher_ctx *ctx)
{
BCryptDestroyKey(ctx->hKey);
ctx->hKey = NULL;
_libssh2_wincng_safe_free(ctx->pbKeyObject, ctx->dwKeyObject);
ctx->pbKeyObject = NULL;
ctx->dwKeyObject = 0;
_libssh2_wincng_safe_free(ctx->pbIV, ctx->dwBlockLength);
ctx->pbIV = NULL;
ctx->dwBlockLength = 0;
_libssh2_wincng_safe_free(ctx->pbCtr, ctx->dwCtrLength);
ctx->pbCtr = NULL;
ctx->dwCtrLength = 0;
}
/*******************************************************************/
/*
* Windows CNG backend: BigNumber functions
*/
_libssh2_bn *
_libssh2_wincng_bignum_init(void)
{
_libssh2_bn *bignum;
bignum = (_libssh2_bn *)malloc(sizeof(_libssh2_bn));
if(bignum) {
bignum->bignum = NULL;
bignum->length = 0;
}
return bignum;
}
static int
_libssh2_wincng_bignum_resize(_libssh2_bn *bn, unsigned long length)
{
unsigned char *bignum;
if(!bn)
return -1;
if(length == bn->length)
return 0;
#ifdef LIBSSH2_CLEAR_MEMORY
if(bn->bignum && bn->length > 0 && length < bn->length) {
SecureZeroMemory(bn->bignum + length, bn->length - length);
}
#endif
bignum = realloc(bn->bignum, length);
if(!bignum)
return -1;
bn->bignum = bignum;
bn->length = length;
return 0;
}
static int
_libssh2_wincng_bignum_rand(_libssh2_bn *rnd, int bits, int top, int bottom)
{
unsigned char *bignum;
unsigned long length;
if(!rnd)
return -1;
length = (unsigned long) (ceil(((double)bits) / 8.0) *
sizeof(unsigned char));
if(_libssh2_wincng_bignum_resize(rnd, length))
return -1;
bignum = rnd->bignum;
if(_libssh2_wincng_random(bignum, length))
return -1;
/* calculate significant bits in most significant byte */
bits %= 8;
if(bits == 0)
bits = 8;
/* fill most significant byte with zero padding */
bignum[0] &= ((1 << bits) - 1);
/* set most significant bits in most significant byte */
if(top == 0)
bignum[0] |= (1 << (bits - 1));
else if(top == 1)
bignum[0] |= (3 << (bits - 2));
/* make odd by setting first bit in least significant byte */
if(bottom)
bignum[length - 1] |= 1;
return 0;
}
static int
_libssh2_wincng_bignum_mod_exp(_libssh2_bn *r,
_libssh2_bn *a,
_libssh2_bn *p,
_libssh2_bn *m)
{
BCRYPT_KEY_HANDLE hKey;
BCRYPT_RSAKEY_BLOB *rsakey;
unsigned char *key, *bignum;
unsigned long keylen, offset, length;
int ret;
if(!r || !a || !p || !m)
return -1;
offset = sizeof(BCRYPT_RSAKEY_BLOB);
keylen = offset + p->length + m->length;
key = malloc(keylen);
if(!key)
return -1;
/* https://msdn.microsoft.com/library/windows/desktop/aa375531.aspx */
rsakey = (BCRYPT_RSAKEY_BLOB *)key;
rsakey->Magic = BCRYPT_RSAPUBLIC_MAGIC;
rsakey->BitLength = m->length * 8;
rsakey->cbPublicExp = p->length;
rsakey->cbModulus = m->length;
rsakey->cbPrime1 = 0;
rsakey->cbPrime2 = 0;
memcpy(key + offset, p->bignum, p->length);
offset += p->length;
memcpy(key + offset, m->bignum, m->length);
offset = 0;
ret = BCryptImportKeyPair(_libssh2_wincng.hAlgRSA, NULL,
BCRYPT_RSAPUBLIC_BLOB, &hKey, key, keylen, 0);
if(BCRYPT_SUCCESS(ret)) {
ret = BCryptEncrypt(hKey, a->bignum, a->length, NULL, NULL, 0,
NULL, 0, &length, BCRYPT_PAD_NONE);
if(BCRYPT_SUCCESS(ret)) {
if(!_libssh2_wincng_bignum_resize(r, length)) {
length = max(a->length, length);
bignum = malloc(length);
if(bignum) {
memcpy_with_be_padding(bignum, length,
a->bignum, a->length);
ret = BCryptEncrypt(hKey, bignum, length, NULL, NULL, 0,
r->bignum, r->length, &offset,
BCRYPT_PAD_NONE);
_libssh2_wincng_safe_free(bignum, length);
if(BCRYPT_SUCCESS(ret)) {
_libssh2_wincng_bignum_resize(r, offset);
}
}
else
ret = STATUS_NO_MEMORY;
}
else
ret = STATUS_NO_MEMORY;
}
BCryptDestroyKey(hKey);
}
_libssh2_wincng_safe_free(key, keylen);
return BCRYPT_SUCCESS(ret) ? 0 : -1;
}
int
_libssh2_wincng_bignum_set_word(_libssh2_bn *bn, unsigned long word)
{
unsigned long offset, number, bits, length;
if(!bn)
return -1;
bits = 0;
number = word;
while(number >>= 1)
bits++;
bits++;
length = (unsigned long) (ceil(((double)bits) / 8.0) *
sizeof(unsigned char));
if(_libssh2_wincng_bignum_resize(bn, length))
return -1;
for(offset = 0; offset < length; offset++)
bn->bignum[offset] = (word >> (offset * 8)) & 0xff;
return 0;
}
unsigned long
_libssh2_wincng_bignum_bits(const _libssh2_bn *bn)
{
unsigned char number;
unsigned long offset, length, bits;
if(!bn || !bn->bignum || !bn->length)
return 0;
offset = 0;
length = bn->length - 1;
while(!bn->bignum[offset] && offset < length)
offset++;
bits = (length - offset) * 8;
number = bn->bignum[offset];
while(number >>= 1)
bits++;
bits++;
return bits;
}
void
_libssh2_wincng_bignum_from_bin(_libssh2_bn *bn, unsigned long len,
const unsigned char *bin)
{
unsigned char *bignum;
unsigned long offset, length, bits;
if(!bn || !bin || !len)
return;
if(_libssh2_wincng_bignum_resize(bn, len))
return;
memcpy(bn->bignum, bin, len);
bits = _libssh2_wincng_bignum_bits(bn);
length = (unsigned long) (ceil(((double)bits) / 8.0) *
sizeof(unsigned char));
offset = bn->length - length;
if(offset > 0) {
memmove(bn->bignum, bn->bignum + offset, length);
#ifdef LIBSSH2_CLEAR_MEMORY
SecureZeroMemory(bn->bignum + length, offset);
#endif
bignum = realloc(bn->bignum, length);
if(bignum) {
bn->bignum = bignum;
bn->length = length;
}
}
}
void
_libssh2_wincng_bignum_to_bin(const _libssh2_bn *bn, unsigned char *bin)
{
if(bin && bn && bn->bignum && bn->length > 0) {
memcpy(bin, bn->bignum, bn->length);
}
}
void
_libssh2_wincng_bignum_free(_libssh2_bn *bn)
{
if(bn) {
if(bn->bignum) {
_libssh2_wincng_safe_free(bn->bignum, bn->length);
bn->bignum = NULL;
}
bn->length = 0;
_libssh2_wincng_safe_free(bn, sizeof(_libssh2_bn));
}
}
/*******************************************************************/
/*
* Windows CNG backend: Diffie-Hellman support.
*/
void
_libssh2_dh_init(_libssh2_dh_ctx *dhctx)
{
/* Random from client */
dhctx->bn = NULL;
dhctx->dh_handle = NULL;
dhctx->dh_params = NULL;
}
void
_libssh2_dh_dtor(_libssh2_dh_ctx *dhctx)
{
if(dhctx->dh_handle) {
BCryptDestroyKey(dhctx->dh_handle);
dhctx->dh_handle = NULL;
}
if(dhctx->dh_params) {
/* Since public dh_params are shared in clear text,
* we don't need to securely zero them out here */
free(dhctx->dh_params);
dhctx->dh_params = NULL;
}
if(dhctx->bn) {
_libssh2_wincng_bignum_free(dhctx->bn);
dhctx->bn = NULL;
}
}
/* Generates a Diffie-Hellman key pair using base `g', prime `p' and the given
* `group_order'. Can use the given big number context `bnctx' if needed. The
* private key is stored as opaque in the Diffie-Hellman context `*dhctx' and
* the public key is returned in `public'. 0 is returned upon success, else
* -1. */
int
_libssh2_dh_key_pair(_libssh2_dh_ctx *dhctx, _libssh2_bn *public,
_libssh2_bn *g, _libssh2_bn *p, int group_order)
{
const int hasAlgDHwithKDF = _libssh2_wincng.hasAlgDHwithKDF;
while(_libssh2_wincng.hAlgDH && hasAlgDHwithKDF != -1) {
BCRYPT_DH_PARAMETER_HEADER *dh_params = NULL;
unsigned long dh_params_len;
unsigned char *blob = NULL;
int status;
/* Note that the DH provider requires that keys be multiples of 64 bits
* in length. At the time of writing a practical observed group_order
* value is 257, so we need to round down to 8 bytes of length (64/8)
* in order for kex to succeed */
DWORD key_length_bytes = max(round_down(group_order, 8),
max(g->length, p->length));
BCRYPT_DH_KEY_BLOB *dh_key_blob;
LPCWSTR key_type;
/* Prepare a key pair; pass the in the bit length of the key,
* but the key is not ready for consumption until it is finalized. */
status = BCryptGenerateKeyPair(_libssh2_wincng.hAlgDH,
&dhctx->dh_handle,
key_length_bytes * 8, 0);
if(!BCRYPT_SUCCESS(status)) {
return -1;
}
dh_params_len = sizeof(*dh_params) + 2 * key_length_bytes;
blob = malloc(dh_params_len);
if(!blob) {
return -1;
}
/* Populate DH parameters blob; after the header follows the `p`
* value and the `g` value. */
dh_params = (BCRYPT_DH_PARAMETER_HEADER*)blob;
dh_params->cbLength = dh_params_len;
dh_params->dwMagic = BCRYPT_DH_PARAMETERS_MAGIC;
dh_params->cbKeyLength = key_length_bytes;
memcpy_with_be_padding(blob + sizeof(*dh_params), key_length_bytes,
p->bignum, p->length);
memcpy_with_be_padding(blob + sizeof(*dh_params) + key_length_bytes,
key_length_bytes, g->bignum, g->length);
status = BCryptSetProperty(dhctx->dh_handle, BCRYPT_DH_PARAMETERS,
blob, dh_params_len, 0);
if(hasAlgDHwithKDF == -1) {
/* We know that the raw KDF is not supported, so discard this. */
free(blob);
}
else {
/* Pass ownership to dhctx; these parameters will be freed when
* the context is destroyed. We need to keep the parameters more
* easily available so that we have access to the `g` value when
* _libssh2_dh_secret is called later. */
dhctx->dh_params = dh_params;
}
dh_params = NULL;
blob = NULL;
if(!BCRYPT_SUCCESS(status)) {
return -1;
}
status = BCryptFinalizeKeyPair(dhctx->dh_handle, 0);
if(!BCRYPT_SUCCESS(status)) {
return -1;
}
key_length_bytes = 0;
if(hasAlgDHwithKDF == 1) {
/* Now we need to extract the public portion of the key so that we
* set it in the `public` bignum to satisfy our caller.
* First measure up the size of the required buffer. */
key_type = BCRYPT_DH_PUBLIC_BLOB;
}
else {
/* We also need to extract the private portion of the key to
* set it in the `*dhctx' bignum if the raw KDF is not supported.
* First measure up the size of the required buffer. */
key_type = BCRYPT_DH_PRIVATE_BLOB;
}
status = BCryptExportKey(dhctx->dh_handle, NULL, key_type,
NULL, 0, &key_length_bytes, 0);
if(!BCRYPT_SUCCESS(status)) {
return -1;
}
blob = malloc(key_length_bytes);
if(!blob) {
return -1;
}
status = BCryptExportKey(dhctx->dh_handle, NULL, key_type,
blob, key_length_bytes,
&key_length_bytes, 0);
if(!BCRYPT_SUCCESS(status)) {
if(hasAlgDHwithKDF == 1) {
/* We have no private data, because raw KDF is supported */
free(blob);
}
else { /* we may have potentially private data, use secure free */
_libssh2_wincng_safe_free(blob, key_length_bytes);
}
return -1;
}
if(hasAlgDHwithKDF == -1) {
/* We know that the raw KDF is not supported, so discard this */
BCryptDestroyKey(dhctx->dh_handle);
dhctx->dh_handle = NULL;
}
/* BCRYPT_DH_PUBLIC_BLOB corresponds to a BCRYPT_DH_KEY_BLOB header
* followed by the Modulus, Generator and Public data. Those components
* each have equal size, specified by dh_key_blob->cbKey. */
dh_key_blob = (BCRYPT_DH_KEY_BLOB*)blob;
if(_libssh2_wincng_bignum_resize(public, dh_key_blob->cbKey)) {
if(hasAlgDHwithKDF == 1) {
/* We have no private data, because raw KDF is supported */
free(blob);
}
else { /* we may have potentially private data, use secure free */
_libssh2_wincng_safe_free(blob, key_length_bytes);
}
return -1;
}
/* Copy the public key data into the public bignum data buffer */
memcpy(public->bignum,
blob + sizeof(*dh_key_blob) + 2 * dh_key_blob->cbKey,
dh_key_blob->cbKey);
if(dh_key_blob->dwMagic == BCRYPT_DH_PRIVATE_MAGIC) {
/* BCRYPT_DH_PRIVATE_BLOB additionally contains the Private data */
dhctx->bn = _libssh2_wincng_bignum_init();
if(!dhctx->bn) {
_libssh2_wincng_safe_free(blob, key_length_bytes);
return -1;
}
if(_libssh2_wincng_bignum_resize(dhctx->bn, dh_key_blob->cbKey)) {
_libssh2_wincng_safe_free(blob, key_length_bytes);
return -1;
}
/* Copy the private key data into the dhctx bignum data buffer */
memcpy(dhctx->bn->bignum,
blob + sizeof(*dh_key_blob) + 3 * dh_key_blob->cbKey,
dh_key_blob->cbKey);
/* Make sure the private key is an odd number, because only
* odd primes can be used with the RSA-based fallback while
* DH itself does not seem to care about it being odd or not. */
if(!(dhctx->bn->bignum[dhctx->bn->length-1] % 2)) {
_libssh2_wincng_safe_free(blob, key_length_bytes);
/* discard everything first, then try again */
_libssh2_dh_dtor(dhctx);
_libssh2_dh_init(dhctx);
continue;
}
}
return 0;
}
/* Generate x and e */
dhctx->bn = _libssh2_wincng_bignum_init();
if(!dhctx->bn)
return -1;
if(_libssh2_wincng_bignum_rand(dhctx->bn, group_order * 8 - 1, 0, -1))
return -1;
if(_libssh2_wincng_bignum_mod_exp(public, g, dhctx->bn, p))
return -1;
return 0;
}
/* Computes the Diffie-Hellman secret from the previously created context
* `*dhctx', the public key `f' from the other party and the same prime `p'
* used at context creation. The result is stored in `secret'. 0 is returned
* upon success, else -1. */
int
_libssh2_dh_secret(_libssh2_dh_ctx *dhctx, _libssh2_bn *secret,
_libssh2_bn *f, _libssh2_bn *p)
{
if(_libssh2_wincng.hAlgDH && _libssh2_wincng.hasAlgDHwithKDF != -1 &&
dhctx->dh_handle && dhctx->dh_params && f) {
BCRYPT_KEY_HANDLE peer_public = NULL;
BCRYPT_SECRET_HANDLE agreement = NULL;
ULONG secret_len_bytes = 0;
unsigned char *blob;
int status;
unsigned char *start, *end;
BCRYPT_DH_KEY_BLOB *public_blob = NULL;
DWORD key_length_bytes = max(f->length, dhctx->dh_params->cbKeyLength);
DWORD public_blob_len = sizeof(*public_blob) + 3 * key_length_bytes;
{
/* Populate a BCRYPT_DH_KEY_BLOB; after the header follows the
* Modulus, Generator and Public data. Those components must have
* equal size in this representation. */
unsigned char *dest;
unsigned char *src;
blob = malloc(public_blob_len);
if(!blob) {
return -1;
}
public_blob = (BCRYPT_DH_KEY_BLOB*)blob;
public_blob->dwMagic = BCRYPT_DH_PUBLIC_MAGIC;
public_blob->cbKey = key_length_bytes;
dest = (unsigned char *)(public_blob + 1);
src = (unsigned char *)(dhctx->dh_params + 1);
/* Modulus (the p-value from the first call) */
memcpy_with_be_padding(dest, key_length_bytes, src,
dhctx->dh_params->cbKeyLength);
/* Generator (the g-value from the first call) */
memcpy_with_be_padding(dest + key_length_bytes, key_length_bytes,
src + dhctx->dh_params->cbKeyLength,
dhctx->dh_params->cbKeyLength);
/* Public from the peer */
memcpy_with_be_padding(dest + 2*key_length_bytes, key_length_bytes,
f->bignum, f->length);
}
/* Import the peer public key information */
status = BCryptImportKeyPair(_libssh2_wincng.hAlgDH, NULL,
BCRYPT_DH_PUBLIC_BLOB, &peer_public, blob,
public_blob_len, 0);
if(!BCRYPT_SUCCESS(status)) {
goto out;
}
/* Set up a handle that we can use to establish the shared secret
* between ourselves (our saved dh_handle) and the peer. */
status = BCryptSecretAgreement(dhctx->dh_handle, peer_public,
&agreement, 0);
if(!BCRYPT_SUCCESS(status)) {
goto out;
}
/* Compute the size of the buffer that is needed to hold the derived
* shared secret. */
status = BCryptDeriveKey(agreement, BCRYPT_KDF_RAW_SECRET, NULL, NULL,
0, &secret_len_bytes, 0);
if(!BCRYPT_SUCCESS(status)) {
if(status == STATUS_NOT_SUPPORTED) {
_libssh2_wincng.hasAlgDHwithKDF = -1;
}
goto out;
}
/* Expand the secret bignum to be ready to receive the derived secret
* */
if(_libssh2_wincng_bignum_resize(secret, secret_len_bytes)) {
status = STATUS_NO_MEMORY;
goto out;
}
/* And populate the secret bignum */
status = BCryptDeriveKey(agreement, BCRYPT_KDF_RAW_SECRET, NULL,
secret->bignum, secret_len_bytes,
&secret_len_bytes, 0);
if(!BCRYPT_SUCCESS(status)) {
if(status == STATUS_NOT_SUPPORTED) {
_libssh2_wincng.hasAlgDHwithKDF = -1;
}
goto out;
}
/* Counter to all the other data in the BCrypt APIs, the raw secret is
* returned to us in host byte order, so we need to swap it to big
* endian order. */
start = secret->bignum;
end = secret->bignum + secret->length - 1;
while(start < end) {
unsigned char tmp = *end;
*end = *start;
*start = tmp;
start++;
end--;
}
status = 0;
_libssh2_wincng.hasAlgDHwithKDF = 1;
out:
if(peer_public) {
BCryptDestroyKey(peer_public);
}
if(agreement) {
BCryptDestroySecret(agreement);
}
if(status == STATUS_NOT_SUPPORTED &&
_libssh2_wincng.hasAlgDHwithKDF == -1) {
goto fb; /* fallback to RSA-based implementation */
}
return BCRYPT_SUCCESS(status) ? 0 : -1;
}
fb:
/* Compute the shared secret */
return _libssh2_wincng_bignum_mod_exp(secret, f, dhctx->bn, p);
}
#endif /* LIBSSH2_WINCNG */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/bcrypt_pbkdf.c | /* $OpenBSD: bcrypt_pbkdf.c,v 1.4 2013/07/29 00:55:53 tedu Exp $ */
/*
* Copyright (c) 2013 Ted Unangst <[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef HAVE_BCRYPT_PBKDF
#include "libssh2_priv.h"
#include <stdlib.h>
#include <sys/types.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include "blf.h"
#define MINIMUM(a,b) (((a) < (b)) ? (a) : (b))
/*
* pkcs #5 pbkdf2 implementation using the "bcrypt" hash
*
* The bcrypt hash function is derived from the bcrypt password hashing
* function with the following modifications:
* 1. The input password and salt are preprocessed with SHA512.
* 2. The output length is expanded to 256 bits.
* 3. Subsequently the magic string to be encrypted is lengthened and modified
* to "OxychromaticBlowfishSwatDynamite"
* 4. The hash function is defined to perform 64 rounds of initial state
* expansion. (More rounds are performed by iterating the hash.)
*
* Note that this implementation pulls the SHA512 operations into the caller
* as a performance optimization.
*
* One modification from official pbkdf2. Instead of outputting key material
* linearly, we mix it. pbkdf2 has a known weakness where if one uses it to
* generate (i.e.) 512 bits of key material for use as two 256 bit keys, an
* attacker can merely run once through the outer loop below, but the user
* always runs it twice. Shuffling output bytes requires computing the
* entirety of the key material to assemble any subkey. This is something a
* wise caller could do; we just do it for you.
*/
#define BCRYPT_BLOCKS 8
#define BCRYPT_HASHSIZE (BCRYPT_BLOCKS * 4)
static void
bcrypt_hash(uint8_t *sha2pass, uint8_t *sha2salt, uint8_t *out)
{
blf_ctx state;
uint8_t ciphertext[BCRYPT_HASHSIZE] =
"OxychromaticBlowfishSwatDynamite";
uint32_t cdata[BCRYPT_BLOCKS];
int i;
uint16_t j;
size_t shalen = SHA512_DIGEST_LENGTH;
/* key expansion */
Blowfish_initstate(&state);
Blowfish_expandstate(&state, sha2salt, shalen, sha2pass, shalen);
for(i = 0; i < 64; i++) {
Blowfish_expand0state(&state, sha2salt, shalen);
Blowfish_expand0state(&state, sha2pass, shalen);
}
/* encryption */
j = 0;
for(i = 0; i < BCRYPT_BLOCKS; i++)
cdata[i] = Blowfish_stream2word(ciphertext, sizeof(ciphertext),
&j);
for(i = 0; i < 64; i++)
blf_enc(&state, cdata, BCRYPT_BLOCKS / 2);
/* copy out */
for(i = 0; i < BCRYPT_BLOCKS; i++) {
out[4 * i + 3] = (cdata[i] >> 24) & 0xff;
out[4 * i + 2] = (cdata[i] >> 16) & 0xff;
out[4 * i + 1] = (cdata[i] >> 8) & 0xff;
out[4 * i + 0] = cdata[i] & 0xff;
}
/* zap */
_libssh2_explicit_zero(ciphertext, sizeof(ciphertext));
_libssh2_explicit_zero(cdata, sizeof(cdata));
_libssh2_explicit_zero(&state, sizeof(state));
}
int
bcrypt_pbkdf(const char *pass, size_t passlen, const uint8_t *salt,
size_t saltlen,
uint8_t *key, size_t keylen, unsigned int rounds)
{
uint8_t sha2pass[SHA512_DIGEST_LENGTH];
uint8_t sha2salt[SHA512_DIGEST_LENGTH];
uint8_t out[BCRYPT_HASHSIZE];
uint8_t tmpout[BCRYPT_HASHSIZE];
uint8_t *countsalt;
size_t i, j, amt, stride;
uint32_t count;
size_t origkeylen = keylen;
libssh2_sha512_ctx ctx;
/* nothing crazy */
if(rounds < 1)
return -1;
if(passlen == 0 || saltlen == 0 || keylen == 0 ||
keylen > sizeof(out) * sizeof(out) || saltlen > 1<<20)
return -1;
countsalt = calloc(1, saltlen + 4);
if(countsalt == NULL)
return -1;
stride = (keylen + sizeof(out) - 1) / sizeof(out);
amt = (keylen + stride - 1) / stride;
memcpy(countsalt, salt, saltlen);
/* collapse password */
(void)libssh2_sha512_init(&ctx);
libssh2_sha512_update(ctx, pass, passlen);
libssh2_sha512_final(ctx, sha2pass);
/* generate key, sizeof(out) at a time */
for(count = 1; keylen > 0; count++) {
countsalt[saltlen + 0] = (count >> 24) & 0xff;
countsalt[saltlen + 1] = (count >> 16) & 0xff;
countsalt[saltlen + 2] = (count >> 8) & 0xff;
countsalt[saltlen + 3] = count & 0xff;
/* first round, salt is salt */
(void)libssh2_sha512_init(&ctx);
libssh2_sha512_update(ctx, countsalt, saltlen + 4);
libssh2_sha512_final(ctx, sha2salt);
bcrypt_hash(sha2pass, sha2salt, tmpout);
memcpy(out, tmpout, sizeof(out));
for(i = 1; i < rounds; i++) {
/* subsequent rounds, salt is previous output */
(void)libssh2_sha512_init(&ctx);
libssh2_sha512_update(ctx, tmpout, sizeof(tmpout));
libssh2_sha512_final(ctx, sha2salt);
bcrypt_hash(sha2pass, sha2salt, tmpout);
for(j = 0; j < sizeof(out); j++)
out[j] ^= tmpout[j];
}
/*
* pbkdf2 deviation: output the key material non-linearly.
*/
amt = MINIMUM(amt, keylen);
for(i = 0; i < amt; i++) {
size_t dest = i * stride + (count - 1);
if(dest >= origkeylen) {
break;
}
key[dest] = out[i];
}
keylen -= i;
}
/* zap */
_libssh2_explicit_zero(out, sizeof(out));
free(countsalt);
return 0;
}
#endif /* HAVE_BCRYPT_PBKDF */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/version.c | /* Copyright (C) 2009 Daniel Stenberg. All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
*/
#include "libssh2_priv.h"
/*
libssh2_version() can be used like this:
if (!libssh2_version(LIBSSH2_VERSION_NUM)) {
fprintf (stderr, "Runtime libssh2 version too old!\n");
exit(1);
}
*/
LIBSSH2_API
const char *libssh2_version(int req_version_num)
{
if(req_version_num <= LIBSSH2_VERSION_NUM)
return LIBSSH2_VERSION;
return NULL; /* this is not a suitable library! */
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/comp.c | /* Copyright (c) 2004-2007, 2019, Sara Golemon <[email protected]>
* Copyright (c) 2010-2014, Daniel Stenberg <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#ifdef LIBSSH2_HAVE_ZLIB
#include <zlib.h>
#undef compress /* dodge name clash with ZLIB macro */
#endif
#include "comp.h"
/* ********
* none *
******** */
/*
* comp_method_none_comp
*
* Minimalist compression: Absolutely none
*/
static int
comp_method_none_comp(LIBSSH2_SESSION *session,
unsigned char *dest,
size_t *dest_len,
const unsigned char *src,
size_t src_len,
void **abstract)
{
(void) session;
(void) abstract;
(void) dest;
(void) dest_len;
(void) src;
(void) src_len;
return 0;
}
/*
* comp_method_none_decomp
*
* Minimalist decompression: Absolutely none
*/
static int
comp_method_none_decomp(LIBSSH2_SESSION * session,
unsigned char **dest,
size_t *dest_len,
size_t payload_limit,
const unsigned char *src,
size_t src_len, void **abstract)
{
(void) session;
(void) payload_limit;
(void) abstract;
*dest = (unsigned char *) src;
*dest_len = src_len;
return 0;
}
static const LIBSSH2_COMP_METHOD comp_method_none = {
"none",
0, /* not really compressing */
0, /* isn't used in userauth, go figure */
NULL,
comp_method_none_comp,
comp_method_none_decomp,
NULL
};
#ifdef LIBSSH2_HAVE_ZLIB
/* ********
* zlib *
******** */
/* Memory management wrappers
* Yes, I realize we're doing a callback to a callback,
* Deal...
*/
static voidpf
comp_method_zlib_alloc(voidpf opaque, uInt items, uInt size)
{
LIBSSH2_SESSION *session = (LIBSSH2_SESSION *) opaque;
return (voidpf) LIBSSH2_ALLOC(session, items * size);
}
static void
comp_method_zlib_free(voidpf opaque, voidpf address)
{
LIBSSH2_SESSION *session = (LIBSSH2_SESSION *) opaque;
LIBSSH2_FREE(session, address);
}
/* libssh2_comp_method_zlib_init
* All your bandwidth are belong to us (so save some)
*/
static int
comp_method_zlib_init(LIBSSH2_SESSION * session, int compr,
void **abstract)
{
z_stream *strm;
int status;
strm = LIBSSH2_CALLOC(session, sizeof(z_stream));
if(!strm) {
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate memory for "
"zlib compression/decompression");
}
strm->opaque = (voidpf) session;
strm->zalloc = (alloc_func) comp_method_zlib_alloc;
strm->zfree = (free_func) comp_method_zlib_free;
if(compr) {
/* deflate */
status = deflateInit(strm, Z_DEFAULT_COMPRESSION);
}
else {
/* inflate */
status = inflateInit(strm);
}
if(status != Z_OK) {
LIBSSH2_FREE(session, strm);
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"unhandled zlib error %d", status);
return LIBSSH2_ERROR_COMPRESS;
}
*abstract = strm;
return LIBSSH2_ERROR_NONE;
}
/*
* libssh2_comp_method_zlib_comp
*
* Compresses source to destination. Without allocation.
*/
static int
comp_method_zlib_comp(LIBSSH2_SESSION *session,
unsigned char *dest,
/* dest_len is a pointer to allow this function to
update it with the final actual size used */
size_t *dest_len,
const unsigned char *src,
size_t src_len,
void **abstract)
{
z_stream *strm = *abstract;
int out_maxlen = *dest_len;
int status;
strm->next_in = (unsigned char *) src;
strm->avail_in = src_len;
strm->next_out = dest;
strm->avail_out = out_maxlen;
status = deflate(strm, Z_PARTIAL_FLUSH);
if((status == Z_OK) && (strm->avail_out > 0)) {
*dest_len = out_maxlen - strm->avail_out;
return 0;
}
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"unhandled zlib compression error %d, avail_out",
status, strm->avail_out);
return _libssh2_error(session, LIBSSH2_ERROR_ZLIB, "compression failure");
}
/*
* libssh2_comp_method_zlib_decomp
*
* Decompresses source to destination. Allocates the output memory.
*/
static int
comp_method_zlib_decomp(LIBSSH2_SESSION * session,
unsigned char **dest,
size_t *dest_len,
size_t payload_limit,
const unsigned char *src,
size_t src_len, void **abstract)
{
z_stream *strm = *abstract;
/* A short-term alloc of a full data chunk is better than a series of
reallocs */
char *out;
size_t out_maxlen = src_len;
if(src_len <= SIZE_MAX / 4)
out_maxlen = src_len * 4;
else
out_maxlen = payload_limit;
/* If strm is null, then we have not yet been initialized. */
if(strm == NULL)
return _libssh2_error(session, LIBSSH2_ERROR_COMPRESS,
"decompression uninitialized");;
/* In practice they never come smaller than this */
if(out_maxlen < 25)
out_maxlen = 25;
if(out_maxlen > payload_limit)
out_maxlen = payload_limit;
strm->next_in = (unsigned char *) src;
strm->avail_in = src_len;
strm->next_out = (unsigned char *) LIBSSH2_ALLOC(session, out_maxlen);
out = (char *) strm->next_out;
strm->avail_out = out_maxlen;
if(!strm->next_out)
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to allocate decompression buffer");
/* Loop until it's all inflated or hit error */
for(;;) {
int status;
size_t out_ofs;
char *newout;
status = inflate(strm, Z_PARTIAL_FLUSH);
if(status == Z_OK) {
if(strm->avail_out > 0)
/* status is OK and the output buffer has not been exhausted
so we're done */
break;
}
else if(status == Z_BUF_ERROR) {
/* the input data has been exhausted so we are done */
break;
}
else {
/* error state */
LIBSSH2_FREE(session, out);
_libssh2_debug(session, LIBSSH2_TRACE_TRANS,
"unhandled zlib error %d", status);
return _libssh2_error(session, LIBSSH2_ERROR_ZLIB,
"decompression failure");
}
if(out_maxlen > payload_limit || out_maxlen > SIZE_MAX / 2) {
LIBSSH2_FREE(session, out);
return _libssh2_error(session, LIBSSH2_ERROR_ZLIB,
"Excessive growth in decompression phase");
}
/* If we get here we need to grow the output buffer and try again */
out_ofs = out_maxlen - strm->avail_out;
out_maxlen *= 2;
newout = LIBSSH2_REALLOC(session, out, out_maxlen);
if(!newout) {
LIBSSH2_FREE(session, out);
return _libssh2_error(session, LIBSSH2_ERROR_ALLOC,
"Unable to expand decompression buffer");
}
out = newout;
strm->next_out = (unsigned char *) out + out_ofs;
strm->avail_out = out_maxlen - out_ofs;
}
*dest = (unsigned char *) out;
*dest_len = out_maxlen - strm->avail_out;
return 0;
}
/* libssh2_comp_method_zlib_dtor
* All done, no more compression for you
*/
static int
comp_method_zlib_dtor(LIBSSH2_SESSION *session, int compr, void **abstract)
{
z_stream *strm = *abstract;
if(strm) {
if(compr)
deflateEnd(strm);
else
inflateEnd(strm);
LIBSSH2_FREE(session, strm);
}
*abstract = NULL;
return 0;
}
static const LIBSSH2_COMP_METHOD comp_method_zlib = {
"zlib",
1, /* yes, this compresses */
1, /* do compression during userauth */
comp_method_zlib_init,
comp_method_zlib_comp,
comp_method_zlib_decomp,
comp_method_zlib_dtor,
};
static const LIBSSH2_COMP_METHOD comp_method_zlib_openssh = {
"[email protected]",
1, /* yes, this compresses */
0, /* don't use compression during userauth */
comp_method_zlib_init,
comp_method_zlib_comp,
comp_method_zlib_decomp,
comp_method_zlib_dtor,
};
#endif /* LIBSSH2_HAVE_ZLIB */
/* If compression is enabled by the API, then this array is used which then
may allow compression if zlib is available at build time */
static const LIBSSH2_COMP_METHOD *comp_methods[] = {
#ifdef LIBSSH2_HAVE_ZLIB
&comp_method_zlib,
&comp_method_zlib_openssh,
#endif /* LIBSSH2_HAVE_ZLIB */
&comp_method_none,
NULL
};
/* If compression is disabled by the API, then this array is used */
static const LIBSSH2_COMP_METHOD *no_comp_methods[] = {
&comp_method_none,
NULL
};
const LIBSSH2_COMP_METHOD **
_libssh2_comp_methods(LIBSSH2_SESSION *session)
{
if(session->flag.compress)
return comp_methods;
else
return no_comp_methods;
}
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/mbedtls.c | /* Copyright (c) 2016, Art <https://github.com/wildart>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include "libssh2_priv.h"
#ifdef LIBSSH2_MBEDTLS /* compile only if we build with mbedtls */
/*******************************************************************/
/*
* mbedTLS backend: Global context handles
*/
static mbedtls_entropy_context _libssh2_mbedtls_entropy;
static mbedtls_ctr_drbg_context _libssh2_mbedtls_ctr_drbg;
/*******************************************************************/
/*
* mbedTLS backend: Generic functions
*/
void
_libssh2_mbedtls_init(void)
{
int ret;
mbedtls_entropy_init(&_libssh2_mbedtls_entropy);
mbedtls_ctr_drbg_init(&_libssh2_mbedtls_ctr_drbg);
ret = mbedtls_ctr_drbg_seed(&_libssh2_mbedtls_ctr_drbg,
mbedtls_entropy_func,
&_libssh2_mbedtls_entropy, NULL, 0);
if(ret != 0)
mbedtls_ctr_drbg_free(&_libssh2_mbedtls_ctr_drbg);
}
void
_libssh2_mbedtls_free(void)
{
mbedtls_ctr_drbg_free(&_libssh2_mbedtls_ctr_drbg);
mbedtls_entropy_free(&_libssh2_mbedtls_entropy);
}
int
_libssh2_mbedtls_random(unsigned char *buf, int len)
{
int ret;
ret = mbedtls_ctr_drbg_random(&_libssh2_mbedtls_ctr_drbg, buf, len);
return ret == 0 ? 0 : -1;
}
static void
_libssh2_mbedtls_safe_free(void *buf, int len)
{
#ifndef LIBSSH2_CLEAR_MEMORY
(void)len;
#endif
if(!buf)
return;
#ifdef LIBSSH2_CLEAR_MEMORY
if(len > 0)
_libssh2_explicit_zero(buf, len);
#endif
mbedtls_free(buf);
}
int
_libssh2_mbedtls_cipher_init(_libssh2_cipher_ctx *ctx,
_libssh2_cipher_type(algo),
unsigned char *iv,
unsigned char *secret,
int encrypt)
{
const mbedtls_cipher_info_t *cipher_info;
int ret, op;
if(!ctx)
return -1;
op = encrypt == 0 ? MBEDTLS_ENCRYPT : MBEDTLS_DECRYPT;
cipher_info = mbedtls_cipher_info_from_type(algo);
if(!cipher_info)
return -1;
mbedtls_cipher_init(ctx);
ret = mbedtls_cipher_setup(ctx, cipher_info);
if(!ret)
ret = mbedtls_cipher_setkey(ctx, secret, cipher_info->key_bitlen, op);
if(!ret)
ret = mbedtls_cipher_set_iv(ctx, iv, cipher_info->iv_size);
return ret == 0 ? 0 : -1;
}
int
_libssh2_mbedtls_cipher_crypt(_libssh2_cipher_ctx *ctx,
_libssh2_cipher_type(algo),
int encrypt,
unsigned char *block,
size_t blocklen)
{
int ret;
unsigned char *output;
size_t osize, olen, finish_olen;
(void) encrypt;
(void) algo;
osize = blocklen + mbedtls_cipher_get_block_size(ctx);
output = (unsigned char *)mbedtls_calloc(osize, sizeof(char));
if(output) {
ret = mbedtls_cipher_reset(ctx);
if(!ret)
ret = mbedtls_cipher_update(ctx, block, blocklen, output, &olen);
if(!ret)
ret = mbedtls_cipher_finish(ctx, output + olen, &finish_olen);
if(!ret) {
olen += finish_olen;
memcpy(block, output, olen);
}
_libssh2_mbedtls_safe_free(output, osize);
}
else
ret = -1;
return ret == 0 ? 0 : -1;
}
void
_libssh2_mbedtls_cipher_dtor(_libssh2_cipher_ctx *ctx)
{
mbedtls_cipher_free(ctx);
}
int
_libssh2_mbedtls_hash_init(mbedtls_md_context_t *ctx,
mbedtls_md_type_t mdtype,
const unsigned char *key, unsigned long keylen)
{
const mbedtls_md_info_t *md_info;
int ret, hmac;
md_info = mbedtls_md_info_from_type(mdtype);
if(!md_info)
return 0;
hmac = key == NULL ? 0 : 1;
mbedtls_md_init(ctx);
ret = mbedtls_md_setup(ctx, md_info, hmac);
if(!ret) {
if(hmac)
ret = mbedtls_md_hmac_starts(ctx, key, keylen);
else
ret = mbedtls_md_starts(ctx);
}
return ret == 0 ? 1 : 0;
}
int
_libssh2_mbedtls_hash_final(mbedtls_md_context_t *ctx, unsigned char *hash)
{
int ret;
ret = mbedtls_md_finish(ctx, hash);
mbedtls_md_free(ctx);
return ret == 0 ? 0 : -1;
}
int
_libssh2_mbedtls_hash(const unsigned char *data, unsigned long datalen,
mbedtls_md_type_t mdtype, unsigned char *hash)
{
const mbedtls_md_info_t *md_info;
int ret;
md_info = mbedtls_md_info_from_type(mdtype);
if(!md_info)
return 0;
ret = mbedtls_md(md_info, data, datalen, hash);
return ret == 0 ? 0 : -1;
}
/*******************************************************************/
/*
* mbedTLS backend: BigNumber functions
*/
_libssh2_bn *
_libssh2_mbedtls_bignum_init(void)
{
_libssh2_bn *bignum;
bignum = (_libssh2_bn *)mbedtls_calloc(1, sizeof(_libssh2_bn));
if(bignum) {
mbedtls_mpi_init(bignum);
}
return bignum;
}
void
_libssh2_mbedtls_bignum_free(_libssh2_bn *bn)
{
if(bn) {
mbedtls_mpi_free(bn);
mbedtls_free(bn);
}
}
static int
_libssh2_mbedtls_bignum_random(_libssh2_bn *bn, int bits, int top, int bottom)
{
size_t len;
int err;
int i;
if(!bn || bits <= 0)
return -1;
len = (bits + 7) >> 3;
err = mbedtls_mpi_fill_random(bn, len, mbedtls_ctr_drbg_random,
&_libssh2_mbedtls_ctr_drbg);
if(err)
return -1;
/* Zero unused bits above the most significant bit*/
for(i = len*8 - 1; bits <= i; --i) {
err = mbedtls_mpi_set_bit(bn, i, 0);
if(err)
return -1;
}
/* If `top` is -1, the most significant bit of the random number can be
zero. If top is 0, the most significant bit of the random number is
set to 1, and if top is 1, the two most significant bits of the number
will be set to 1, so that the product of two such random numbers will
always have 2*bits length.
*/
for(i = 0; i <= top; ++i) {
err = mbedtls_mpi_set_bit(bn, bits-i-1, 1);
if(err)
return -1;
}
/* make odd by setting first bit in least significant byte */
if(bottom) {
err = mbedtls_mpi_set_bit(bn, 0, 1);
if(err)
return -1;
}
return 0;
}
/*******************************************************************/
/*
* mbedTLS backend: RSA functions
*/
int
_libssh2_mbedtls_rsa_new(libssh2_rsa_ctx **rsa,
const unsigned char *edata,
unsigned long elen,
const unsigned char *ndata,
unsigned long nlen,
const unsigned char *ddata,
unsigned long dlen,
const unsigned char *pdata,
unsigned long plen,
const unsigned char *qdata,
unsigned long qlen,
const unsigned char *e1data,
unsigned long e1len,
const unsigned char *e2data,
unsigned long e2len,
const unsigned char *coeffdata,
unsigned long coefflen)
{
int ret;
libssh2_rsa_ctx *ctx;
ctx = (libssh2_rsa_ctx *) mbedtls_calloc(1, sizeof(libssh2_rsa_ctx));
if(ctx != NULL) {
mbedtls_rsa_init(ctx, MBEDTLS_RSA_PKCS_V15, 0);
}
else
return -1;
/* !checksrc! disable ASSIGNWITHINCONDITION 1 */
if((ret = mbedtls_mpi_read_binary(&(ctx->E), edata, elen) ) != 0 ||
(ret = mbedtls_mpi_read_binary(&(ctx->N), ndata, nlen) ) != 0) {
ret = -1;
}
if(!ret) {
ctx->len = mbedtls_mpi_size(&(ctx->N));
}
if(!ret && ddata) {
/* !checksrc! disable ASSIGNWITHINCONDITION 1 */
if((ret = mbedtls_mpi_read_binary(&(ctx->D), ddata, dlen) ) != 0 ||
(ret = mbedtls_mpi_read_binary(&(ctx->P), pdata, plen) ) != 0 ||
(ret = mbedtls_mpi_read_binary(&(ctx->Q), qdata, qlen) ) != 0 ||
(ret = mbedtls_mpi_read_binary(&(ctx->DP), e1data, e1len) ) != 0 ||
(ret = mbedtls_mpi_read_binary(&(ctx->DQ), e2data, e2len) ) != 0 ||
(ret = mbedtls_mpi_read_binary(&(ctx->QP), coeffdata, coefflen) )
!= 0) {
ret = -1;
}
ret = mbedtls_rsa_check_privkey(ctx);
}
else if(!ret) {
ret = mbedtls_rsa_check_pubkey(ctx);
}
if(ret && ctx) {
_libssh2_mbedtls_rsa_free(ctx);
ctx = NULL;
}
*rsa = ctx;
return ret;
}
int
_libssh2_mbedtls_rsa_new_private(libssh2_rsa_ctx **rsa,
LIBSSH2_SESSION *session,
const char *filename,
const unsigned char *passphrase)
{
int ret;
mbedtls_pk_context pkey;
mbedtls_rsa_context *pk_rsa;
*rsa = (libssh2_rsa_ctx *) LIBSSH2_ALLOC(session, sizeof(libssh2_rsa_ctx));
if(*rsa == NULL)
return -1;
mbedtls_rsa_init(*rsa, MBEDTLS_RSA_PKCS_V15, 0);
mbedtls_pk_init(&pkey);
ret = mbedtls_pk_parse_keyfile(&pkey, filename, (char *)passphrase);
if(ret != 0 || mbedtls_pk_get_type(&pkey) != MBEDTLS_PK_RSA) {
mbedtls_pk_free(&pkey);
mbedtls_rsa_free(*rsa);
LIBSSH2_FREE(session, *rsa);
*rsa = NULL;
return -1;
}
pk_rsa = mbedtls_pk_rsa(pkey);
mbedtls_rsa_copy(*rsa, pk_rsa);
mbedtls_pk_free(&pkey);
return 0;
}
int
_libssh2_mbedtls_rsa_new_private_frommemory(libssh2_rsa_ctx **rsa,
LIBSSH2_SESSION *session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase)
{
int ret;
mbedtls_pk_context pkey;
mbedtls_rsa_context *pk_rsa;
void *filedata_nullterm;
size_t pwd_len;
*rsa = (libssh2_rsa_ctx *) mbedtls_calloc(1, sizeof(libssh2_rsa_ctx));
if(*rsa == NULL)
return -1;
/*
mbedtls checks in "mbedtls/pkparse.c:1184" if "key[keylen - 1] != '\0'"
private-key from memory will fail if the last byte is not a null byte
*/
filedata_nullterm = mbedtls_calloc(filedata_len + 1, 1);
if(filedata_nullterm == NULL) {
return -1;
}
memcpy(filedata_nullterm, filedata, filedata_len);
mbedtls_pk_init(&pkey);
pwd_len = passphrase != NULL ? strlen((const char *)passphrase) : 0;
ret = mbedtls_pk_parse_key(&pkey, (unsigned char *)filedata_nullterm,
filedata_len + 1,
passphrase, pwd_len);
_libssh2_mbedtls_safe_free(filedata_nullterm, filedata_len);
if(ret != 0 || mbedtls_pk_get_type(&pkey) != MBEDTLS_PK_RSA) {
mbedtls_pk_free(&pkey);
mbedtls_rsa_free(*rsa);
LIBSSH2_FREE(session, *rsa);
*rsa = NULL;
return -1;
}
pk_rsa = mbedtls_pk_rsa(pkey);
mbedtls_rsa_copy(*rsa, pk_rsa);
mbedtls_pk_free(&pkey);
return 0;
}
int
_libssh2_mbedtls_rsa_sha1_verify(libssh2_rsa_ctx *rsa,
const unsigned char *sig,
unsigned long sig_len,
const unsigned char *m,
unsigned long m_len)
{
unsigned char hash[SHA_DIGEST_LENGTH];
int ret;
ret = _libssh2_mbedtls_hash(m, m_len, MBEDTLS_MD_SHA1, hash);
if(ret)
return -1; /* failure */
ret = mbedtls_rsa_pkcs1_verify(rsa, NULL, NULL, MBEDTLS_RSA_PUBLIC,
MBEDTLS_MD_SHA1, SHA_DIGEST_LENGTH,
hash, sig);
return (ret == 0) ? 0 : -1;
}
int
_libssh2_mbedtls_rsa_sha1_sign(LIBSSH2_SESSION *session,
libssh2_rsa_ctx *rsa,
const unsigned char *hash,
size_t hash_len,
unsigned char **signature,
size_t *signature_len)
{
int ret;
unsigned char *sig;
unsigned int sig_len;
(void)hash_len;
sig_len = rsa->len;
sig = LIBSSH2_ALLOC(session, sig_len);
if(!sig) {
return -1;
}
ret = mbedtls_rsa_pkcs1_sign(rsa, NULL, NULL, MBEDTLS_RSA_PRIVATE,
MBEDTLS_MD_SHA1, SHA_DIGEST_LENGTH,
hash, sig);
if(ret) {
LIBSSH2_FREE(session, sig);
return -1;
}
*signature = sig;
*signature_len = sig_len;
return (ret == 0) ? 0 : -1;
}
void
_libssh2_mbedtls_rsa_free(libssh2_rsa_ctx *ctx)
{
mbedtls_rsa_free(ctx);
mbedtls_free(ctx);
}
static unsigned char *
gen_publickey_from_rsa(LIBSSH2_SESSION *session,
mbedtls_rsa_context *rsa,
size_t *keylen)
{
int e_bytes, n_bytes;
unsigned long len;
unsigned char *key;
unsigned char *p;
e_bytes = mbedtls_mpi_size(&rsa->E);
n_bytes = mbedtls_mpi_size(&rsa->N);
/* Key form is "ssh-rsa" + e + n. */
len = 4 + 7 + 4 + e_bytes + 4 + n_bytes;
key = LIBSSH2_ALLOC(session, len);
if(!key) {
return NULL;
}
/* Process key encoding. */
p = key;
_libssh2_htonu32(p, 7); /* Key type. */
p += 4;
memcpy(p, "ssh-rsa", 7);
p += 7;
_libssh2_htonu32(p, e_bytes);
p += 4;
mbedtls_mpi_write_binary(&rsa->E, p, e_bytes);
_libssh2_htonu32(p, n_bytes);
p += 4;
mbedtls_mpi_write_binary(&rsa->N, p, n_bytes);
*keylen = (size_t)(p - key);
return key;
}
static int
_libssh2_mbedtls_pub_priv_key(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
mbedtls_pk_context *pkey)
{
unsigned char *key = NULL, *mth = NULL;
size_t keylen = 0, mthlen = 0;
int ret;
mbedtls_rsa_context *rsa;
if(mbedtls_pk_get_type(pkey) != MBEDTLS_PK_RSA) {
mbedtls_pk_free(pkey);
return _libssh2_error(session, LIBSSH2_ERROR_FILE,
"Key type not supported");
}
/* write method */
mthlen = 7;
mth = LIBSSH2_ALLOC(session, mthlen);
if(mth) {
memcpy(mth, "ssh-rsa", mthlen);
}
else {
ret = -1;
}
rsa = mbedtls_pk_rsa(*pkey);
key = gen_publickey_from_rsa(session, rsa, &keylen);
if(key == NULL) {
ret = -1;
}
/* write output */
if(ret) {
if(mth)
LIBSSH2_FREE(session, mth);
if(key)
LIBSSH2_FREE(session, key);
}
else {
*method = mth;
*method_len = mthlen;
*pubkeydata = key;
*pubkeydata_len = keylen;
}
return ret;
}
int
_libssh2_mbedtls_pub_priv_keyfile(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekey,
const char *passphrase)
{
mbedtls_pk_context pkey;
char buf[1024];
int ret;
mbedtls_pk_init(&pkey);
ret = mbedtls_pk_parse_keyfile(&pkey, privatekey, passphrase);
if(ret != 0) {
mbedtls_strerror(ret, (char *)buf, sizeof(buf));
mbedtls_pk_free(&pkey);
return _libssh2_error(session, LIBSSH2_ERROR_FILE, buf);
}
ret = _libssh2_mbedtls_pub_priv_key(session, method, method_len,
pubkeydata, pubkeydata_len, &pkey);
mbedtls_pk_free(&pkey);
return ret;
}
int
_libssh2_mbedtls_pub_priv_keyfilememory(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekeydata,
size_t privatekeydata_len,
const char *passphrase)
{
mbedtls_pk_context pkey;
char buf[1024];
int ret;
void *privatekeydata_nullterm;
size_t pwd_len;
/*
mbedtls checks in "mbedtls/pkparse.c:1184" if "key[keylen - 1] != '\0'"
private-key from memory will fail if the last byte is not a null byte
*/
privatekeydata_nullterm = mbedtls_calloc(privatekeydata_len + 1, 1);
if(privatekeydata_nullterm == NULL) {
return -1;
}
memcpy(privatekeydata_nullterm, privatekeydata, privatekeydata_len);
mbedtls_pk_init(&pkey);
pwd_len = passphrase != NULL ? strlen((const char *)passphrase) : 0;
ret = mbedtls_pk_parse_key(&pkey,
(unsigned char *)privatekeydata_nullterm,
privatekeydata_len + 1,
(const unsigned char *)passphrase, pwd_len);
_libssh2_mbedtls_safe_free(privatekeydata_nullterm, privatekeydata_len);
if(ret != 0) {
mbedtls_strerror(ret, (char *)buf, sizeof(buf));
mbedtls_pk_free(&pkey);
return _libssh2_error(session, LIBSSH2_ERROR_FILE, buf);
}
ret = _libssh2_mbedtls_pub_priv_key(session, method, method_len,
pubkeydata, pubkeydata_len, &pkey);
mbedtls_pk_free(&pkey);
return ret;
}
void _libssh2_init_aes_ctr(void)
{
/* no implementation */
}
/*******************************************************************/
/*
* mbedTLS backend: Diffie-Hellman functions
*/
void
_libssh2_dh_init(_libssh2_dh_ctx *dhctx)
{
*dhctx = _libssh2_mbedtls_bignum_init(); /* Random from client */
}
int
_libssh2_dh_key_pair(_libssh2_dh_ctx *dhctx, _libssh2_bn *public,
_libssh2_bn *g, _libssh2_bn *p, int group_order)
{
/* Generate x and e */
_libssh2_mbedtls_bignum_random(*dhctx, group_order * 8 - 1, 0, -1);
mbedtls_mpi_exp_mod(public, g, *dhctx, p, NULL);
return 0;
}
int
_libssh2_dh_secret(_libssh2_dh_ctx *dhctx, _libssh2_bn *secret,
_libssh2_bn *f, _libssh2_bn *p)
{
/* Compute the shared secret */
mbedtls_mpi_exp_mod(secret, f, *dhctx, p, NULL);
return 0;
}
void
_libssh2_dh_dtor(_libssh2_dh_ctx *dhctx)
{
_libssh2_mbedtls_bignum_free(*dhctx);
*dhctx = NULL;
}
#if LIBSSH2_ECDSA
/*******************************************************************/
/*
* mbedTLS backend: ECDSA functions
*/
/*
* _libssh2_ecdsa_create_key
*
* Creates a local private key based on input curve
* and returns octal value and octal length
*
*/
int
_libssh2_mbedtls_ecdsa_create_key(LIBSSH2_SESSION *session,
_libssh2_ec_key **privkey,
unsigned char **pubkey_oct,
size_t *pubkey_oct_len,
libssh2_curve_type curve)
{
size_t plen = 0;
*privkey = LIBSSH2_ALLOC(session, sizeof(mbedtls_ecp_keypair));
if(*privkey == NULL)
goto failed;
mbedtls_ecdsa_init(*privkey);
if(mbedtls_ecdsa_genkey(*privkey, (mbedtls_ecp_group_id)curve,
mbedtls_ctr_drbg_random,
&_libssh2_mbedtls_ctr_drbg) != 0)
goto failed;
plen = 2 * mbedtls_mpi_size(&(*privkey)->grp.P) + 1;
*pubkey_oct = LIBSSH2_ALLOC(session, plen);
if(*pubkey_oct == NULL)
goto failed;
if(mbedtls_ecp_point_write_binary(&(*privkey)->grp, &(*privkey)->Q,
MBEDTLS_ECP_PF_UNCOMPRESSED,
pubkey_oct_len, *pubkey_oct, plen) == 0)
return 0;
failed:
_libssh2_mbedtls_ecdsa_free(*privkey);
_libssh2_mbedtls_safe_free(*pubkey_oct, plen);
*privkey = NULL;
return -1;
}
/* _libssh2_ecdsa_curve_name_with_octal_new
*
* Creates a new public key given an octal string, length and type
*
*/
int
_libssh2_mbedtls_ecdsa_curve_name_with_octal_new(libssh2_ecdsa_ctx **ctx,
const unsigned char *k,
size_t k_len,
libssh2_curve_type curve)
{
*ctx = mbedtls_calloc(1, sizeof(mbedtls_ecp_keypair));
if(*ctx == NULL)
goto failed;
mbedtls_ecdsa_init(*ctx);
if(mbedtls_ecp_group_load(&(*ctx)->grp, (mbedtls_ecp_group_id)curve) != 0)
goto failed;
if(mbedtls_ecp_point_read_binary(&(*ctx)->grp, &(*ctx)->Q, k, k_len) != 0)
goto failed;
if(mbedtls_ecp_check_pubkey(&(*ctx)->grp, &(*ctx)->Q) == 0)
return 0;
failed:
_libssh2_mbedtls_ecdsa_free(*ctx);
*ctx = NULL;
return -1;
}
/* _libssh2_ecdh_gen_k
*
* Computes the shared secret K given a local private key,
* remote public key and length
*/
int
_libssh2_mbedtls_ecdh_gen_k(_libssh2_bn **k,
_libssh2_ec_key *privkey,
const unsigned char *server_pubkey,
size_t server_pubkey_len)
{
mbedtls_ecp_point pubkey;
int rc = 0;
if(*k == NULL)
return -1;
mbedtls_ecp_point_init(&pubkey);
if(mbedtls_ecp_point_read_binary(&privkey->grp, &pubkey,
server_pubkey, server_pubkey_len) != 0) {
rc = -1;
goto cleanup;
}
if(mbedtls_ecdh_compute_shared(&privkey->grp, *k,
&pubkey, &privkey->d,
mbedtls_ctr_drbg_random,
&_libssh2_mbedtls_ctr_drbg) != 0) {
rc = -1;
goto cleanup;
}
if(mbedtls_ecp_check_privkey(&privkey->grp, *k) != 0)
rc = -1;
cleanup:
mbedtls_ecp_point_free(&pubkey);
return rc;
}
#define LIBSSH2_MBEDTLS_ECDSA_VERIFY(digest_type) \
{ \
unsigned char hsh[SHA##digest_type##_DIGEST_LENGTH]; \
\
if(libssh2_sha##digest_type(m, m_len, hsh) == 0) { \
rc = mbedtls_ecdsa_verify(&ctx->grp, hsh, \
SHA##digest_type##_DIGEST_LENGTH, \
&ctx->Q, &pr, &ps); \
} \
\
}
/* _libssh2_ecdsa_sign
*
* Verifies the ECDSA signature of a hashed message
*
*/
int
_libssh2_mbedtls_ecdsa_verify(libssh2_ecdsa_ctx *ctx,
const unsigned char *r, size_t r_len,
const unsigned char *s, size_t s_len,
const unsigned char *m, size_t m_len)
{
mbedtls_mpi pr, ps;
int rc = -1;
mbedtls_mpi_init(&pr);
mbedtls_mpi_init(&ps);
if(mbedtls_mpi_read_binary(&pr, r, r_len) != 0)
goto cleanup;
if(mbedtls_mpi_read_binary(&ps, s, s_len) != 0)
goto cleanup;
switch(_libssh2_ecdsa_get_curve_type(ctx)) {
case LIBSSH2_EC_CURVE_NISTP256:
LIBSSH2_MBEDTLS_ECDSA_VERIFY(256);
break;
case LIBSSH2_EC_CURVE_NISTP384:
LIBSSH2_MBEDTLS_ECDSA_VERIFY(384);
break;
case LIBSSH2_EC_CURVE_NISTP521:
LIBSSH2_MBEDTLS_ECDSA_VERIFY(512);
break;
default:
rc = -1;
}
cleanup:
mbedtls_mpi_free(&pr);
mbedtls_mpi_free(&ps);
return (rc == 0) ? 0 : -1;
}
static int
_libssh2_mbedtls_parse_eckey(libssh2_ecdsa_ctx **ctx,
mbedtls_pk_context *pkey,
LIBSSH2_SESSION *session,
const unsigned char *data,
size_t data_len,
const unsigned char *pwd)
{
size_t pwd_len;
pwd_len = pwd ? strlen((const char *) pwd) : 0;
if(mbedtls_pk_parse_key(pkey, data, data_len, pwd, pwd_len) != 0)
goto failed;
if(mbedtls_pk_get_type(pkey) != MBEDTLS_PK_ECKEY)
goto failed;
*ctx = LIBSSH2_ALLOC(session, sizeof(libssh2_ecdsa_ctx));
if(*ctx == NULL)
goto failed;
mbedtls_ecdsa_init(*ctx);
if(mbedtls_ecdsa_from_keypair(*ctx, mbedtls_pk_ec(*pkey)) == 0)
return 0;
failed:
_libssh2_mbedtls_ecdsa_free(*ctx);
*ctx = NULL;
return -1;
}
static int
_libssh2_mbedtls_parse_openssh_key(libssh2_ecdsa_ctx **ctx,
LIBSSH2_SESSION *session,
const unsigned char *data,
size_t data_len,
const unsigned char *pwd)
{
libssh2_curve_type type;
unsigned char *name = NULL;
struct string_buf *decrypted = NULL;
size_t curvelen, exponentlen, pointlen;
unsigned char *curve, *exponent, *point_buf;
if(_libssh2_openssh_pem_parse_memory(session, pwd,
(const char *)data, data_len,
&decrypted) != 0)
goto failed;
if(_libssh2_get_string(decrypted, &name, NULL) != 0)
goto failed;
if(_libssh2_mbedtls_ecdsa_curve_type_from_name((const char *)name,
&type) != 0)
goto failed;
if(_libssh2_get_string(decrypted, &curve, &curvelen) != 0)
goto failed;
if(_libssh2_get_string(decrypted, &point_buf, &pointlen) != 0)
goto failed;
if(_libssh2_get_bignum_bytes(decrypted, &exponent, &exponentlen) != 0)
goto failed;
*ctx = LIBSSH2_ALLOC(session, sizeof(libssh2_ecdsa_ctx));
if(*ctx == NULL)
goto failed;
mbedtls_ecdsa_init(*ctx);
if(mbedtls_ecp_group_load(&(*ctx)->grp, (mbedtls_ecp_group_id)type) != 0)
goto failed;
if(mbedtls_mpi_read_binary(&(*ctx)->d, exponent, exponentlen) != 0)
goto failed;
if(mbedtls_ecp_mul(&(*ctx)->grp, &(*ctx)->Q,
&(*ctx)->d, &(*ctx)->grp.G,
mbedtls_ctr_drbg_random,
&_libssh2_mbedtls_ctr_drbg) != 0)
goto failed;
if(mbedtls_ecp_check_privkey(&(*ctx)->grp, &(*ctx)->d) == 0)
goto cleanup;
failed:
_libssh2_mbedtls_ecdsa_free(*ctx);
*ctx = NULL;
cleanup:
if(decrypted) {
_libssh2_string_buf_free(session, decrypted);
}
return (*ctx == NULL) ? -1 : 0;
}
/* _libssh2_ecdsa_new_private
*
* Creates a new private key given a file path and password
*
*/
int
_libssh2_mbedtls_ecdsa_new_private(libssh2_ecdsa_ctx **ctx,
LIBSSH2_SESSION *session,
const char *filename,
const unsigned char *pwd)
{
mbedtls_pk_context pkey;
unsigned char *data;
size_t data_len;
if(mbedtls_pk_load_file(filename, &data, &data_len) != 0)
goto cleanup;
mbedtls_pk_init(&pkey);
if(_libssh2_mbedtls_parse_eckey(ctx, &pkey, session,
data, data_len, pwd) == 0)
goto cleanup;
_libssh2_mbedtls_parse_openssh_key(ctx, session, data, data_len, pwd);
cleanup:
mbedtls_pk_free(&pkey);
_libssh2_mbedtls_safe_free(data, data_len);
return (*ctx == NULL) ? -1 : 0;
}
/* _libssh2_ecdsa_new_private
*
* Creates a new private key given a file data and password
*
*/
int
_libssh2_mbedtls_ecdsa_new_private_frommemory(libssh2_ecdsa_ctx **ctx,
LIBSSH2_SESSION *session,
const char *data,
size_t data_len,
const unsigned char *pwd)
{
unsigned char *ntdata;
mbedtls_pk_context pkey;
mbedtls_pk_init(&pkey);
ntdata = LIBSSH2_ALLOC(session, data_len + 1);
if(ntdata == NULL)
goto cleanup;
memcpy(ntdata, data, data_len);
if(_libssh2_mbedtls_parse_eckey(ctx, &pkey, session,
ntdata, data_len + 1, pwd) == 0)
goto cleanup;
_libssh2_mbedtls_parse_openssh_key(ctx, session,
ntdata, data_len + 1, pwd);
cleanup:
mbedtls_pk_free(&pkey);
_libssh2_mbedtls_safe_free(ntdata, data_len);
return (*ctx == NULL) ? -1 : 0;
}
static unsigned char *
_libssh2_mbedtls_mpi_write_binary(unsigned char *buf,
const mbedtls_mpi *mpi,
size_t bytes)
{
unsigned char *p = buf;
if(sizeof(&p) / sizeof(p[0]) < 4) {
goto done;
}
p += 4;
*p = 0;
if(bytes > 0) {
mbedtls_mpi_write_binary(mpi, p + 1, bytes - 1);
}
if(bytes > 0 && !(*(p + 1) & 0x80)) {
memmove(p, p + 1, --bytes);
}
_libssh2_htonu32(p - 4, bytes);
done:
return p + bytes;
}
/* _libssh2_ecdsa_sign
*
* Computes the ECDSA signature of a previously-hashed message
*
*/
int
_libssh2_mbedtls_ecdsa_sign(LIBSSH2_SESSION *session,
libssh2_ecdsa_ctx *ctx,
const unsigned char *hash,
unsigned long hash_len,
unsigned char **sign,
size_t *sign_len)
{
size_t r_len, s_len, tmp_sign_len = 0;
unsigned char *sp, *tmp_sign = NULL;
mbedtls_mpi pr, ps;
mbedtls_mpi_init(&pr);
mbedtls_mpi_init(&ps);
if(mbedtls_ecdsa_sign(&ctx->grp, &pr, &ps, &ctx->d,
hash, hash_len,
mbedtls_ctr_drbg_random,
&_libssh2_mbedtls_ctr_drbg) != 0)
goto cleanup;
r_len = mbedtls_mpi_size(&pr) + 1;
s_len = mbedtls_mpi_size(&ps) + 1;
tmp_sign_len = r_len + s_len + 8;
tmp_sign = LIBSSH2_CALLOC(session, tmp_sign_len);
if(tmp_sign == NULL)
goto cleanup;
sp = tmp_sign;
sp = _libssh2_mbedtls_mpi_write_binary(sp, &pr, r_len);
sp = _libssh2_mbedtls_mpi_write_binary(sp, &ps, s_len);
*sign_len = (size_t)(sp - tmp_sign);
*sign = LIBSSH2_CALLOC(session, *sign_len);
if(*sign == NULL)
goto cleanup;
memcpy(*sign, tmp_sign, *sign_len);
cleanup:
mbedtls_mpi_free(&pr);
mbedtls_mpi_free(&ps);
_libssh2_mbedtls_safe_free(tmp_sign, tmp_sign_len);
return (*sign == NULL) ? -1 : 0;
}
/* _libssh2_ecdsa_get_curve_type
*
* returns key curve type that maps to libssh2_curve_type
*
*/
libssh2_curve_type
_libssh2_mbedtls_ecdsa_get_curve_type(libssh2_ecdsa_ctx *ctx)
{
return (libssh2_curve_type) ctx->grp.id;
}
/* _libssh2_ecdsa_curve_type_from_name
*
* returns 0 for success, key curve type that maps to libssh2_curve_type
*
*/
int
_libssh2_mbedtls_ecdsa_curve_type_from_name(const char *name,
libssh2_curve_type *out_type)
{
int ret = 0;
libssh2_curve_type type;
if(name == NULL || strlen(name) != 19)
return -1;
if(strcmp(name, "ecdsa-sha2-nistp256") == 0)
type = LIBSSH2_EC_CURVE_NISTP256;
else if(strcmp(name, "ecdsa-sha2-nistp384") == 0)
type = LIBSSH2_EC_CURVE_NISTP384;
else if(strcmp(name, "ecdsa-sha2-nistp521") == 0)
type = LIBSSH2_EC_CURVE_NISTP521;
else {
ret = -1;
}
if(ret == 0 && out_type) {
*out_type = type;
}
return ret;
}
void
_libssh2_mbedtls_ecdsa_free(libssh2_ecdsa_ctx *ctx)
{
mbedtls_ecdsa_free(ctx);
mbedtls_free(ctx);
}
#endif /* LIBSSH2_ECDSA */
#endif /* LIBSSH2_MBEDTLS */
|
0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/wincng.h | #ifndef __LIBSSH2_WINCNG_H
#define __LIBSSH2_WINCNG_H
/*
* Copyright (C) 2013-2020 Marc Hoersken <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
/* required for cross-compilation against the w64 mingw-runtime package */
#if defined(_WIN32_WINNT) && (_WIN32_WINNT < 0x0600)
#undef _WIN32_WINNT
#endif
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0600
#endif
#include <windows.h>
#include <bcrypt.h>
#define LIBSSH2_MD5 1
#define LIBSSH2_HMAC_RIPEMD 0
#define LIBSSH2_HMAC_SHA256 1
#define LIBSSH2_HMAC_SHA512 1
#define LIBSSH2_AES 1
#define LIBSSH2_AES_CTR 1
#define LIBSSH2_BLOWFISH 0
#define LIBSSH2_RC4 1
#define LIBSSH2_CAST 0
#define LIBSSH2_3DES 1
#define LIBSSH2_RSA 1
#define LIBSSH2_DSA 1
#define LIBSSH2_ECDSA 0
#define LIBSSH2_ED25519 0
#define MD5_DIGEST_LENGTH 16
#define SHA_DIGEST_LENGTH 20
#define SHA256_DIGEST_LENGTH 32
#define SHA384_DIGEST_LENGTH 48
#define SHA512_DIGEST_LENGTH 64
#define EC_MAX_POINT_LEN ((528 * 2 / 8) + 1)
#if LIBSSH2_ECDSA
#else
#define _libssh2_ec_key void
#endif
/*******************************************************************/
/*
* Windows CNG backend: Global context handles
*/
struct _libssh2_wincng_ctx {
BCRYPT_ALG_HANDLE hAlgRNG;
BCRYPT_ALG_HANDLE hAlgHashMD5;
BCRYPT_ALG_HANDLE hAlgHashSHA1;
BCRYPT_ALG_HANDLE hAlgHashSHA256;
BCRYPT_ALG_HANDLE hAlgHashSHA384;
BCRYPT_ALG_HANDLE hAlgHashSHA512;
BCRYPT_ALG_HANDLE hAlgHmacMD5;
BCRYPT_ALG_HANDLE hAlgHmacSHA1;
BCRYPT_ALG_HANDLE hAlgHmacSHA256;
BCRYPT_ALG_HANDLE hAlgHmacSHA384;
BCRYPT_ALG_HANDLE hAlgHmacSHA512;
BCRYPT_ALG_HANDLE hAlgRSA;
BCRYPT_ALG_HANDLE hAlgDSA;
BCRYPT_ALG_HANDLE hAlgAES_CBC;
BCRYPT_ALG_HANDLE hAlgAES_ECB;
BCRYPT_ALG_HANDLE hAlgRC4_NA;
BCRYPT_ALG_HANDLE hAlg3DES_CBC;
BCRYPT_ALG_HANDLE hAlgDH;
volatile int hasAlgDHwithKDF; /* -1=no, 0=maybe, 1=yes */
};
extern struct _libssh2_wincng_ctx _libssh2_wincng;
/*******************************************************************/
/*
* Windows CNG backend: Generic functions
*/
void _libssh2_wincng_init(void);
void _libssh2_wincng_free(void);
#define libssh2_crypto_init() \
_libssh2_wincng_init()
#define libssh2_crypto_exit() \
_libssh2_wincng_free()
#define _libssh2_random(buf, len) \
_libssh2_wincng_random(buf, len)
#define libssh2_prepare_iovec(vec, len) /* Empty. */
/*******************************************************************/
/*
* Windows CNG backend: Hash structure
*/
typedef struct __libssh2_wincng_hash_ctx {
BCRYPT_HASH_HANDLE hHash;
unsigned char *pbHashObject;
unsigned long dwHashObject;
unsigned long cbHash;
} _libssh2_wincng_hash_ctx;
/*
* Windows CNG backend: Hash functions
*/
#define libssh2_sha1_ctx _libssh2_wincng_hash_ctx
#define libssh2_sha1_init(ctx) \
(_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHashSHA1, \
SHA_DIGEST_LENGTH, NULL, 0) == 0)
#define libssh2_sha1_update(ctx, data, datalen) \
_libssh2_wincng_hash_update(&ctx, (unsigned char *) data, datalen)
#define libssh2_sha1_final(ctx, hash) \
_libssh2_wincng_hash_final(&ctx, hash)
#define libssh2_sha1(data, datalen, hash) \
_libssh2_wincng_hash(data, datalen, _libssh2_wincng.hAlgHashSHA1, \
hash, SHA_DIGEST_LENGTH)
#define libssh2_sha256_ctx _libssh2_wincng_hash_ctx
#define libssh2_sha256_init(ctx) \
(_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHashSHA256, \
SHA256_DIGEST_LENGTH, NULL, 0) == 0)
#define libssh2_sha256_update(ctx, data, datalen) \
_libssh2_wincng_hash_update(&ctx, (unsigned char *) data, datalen)
#define libssh2_sha256_final(ctx, hash) \
_libssh2_wincng_hash_final(&ctx, hash)
#define libssh2_sha256(data, datalen, hash) \
_libssh2_wincng_hash(data, datalen, _libssh2_wincng.hAlgHashSHA256, \
hash, SHA256_DIGEST_LENGTH)
#define libssh2_sha384_ctx _libssh2_wincng_hash_ctx
#define libssh2_sha384_init(ctx) \
(_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHashSHA384, \
SHA384_DIGEST_LENGTH, NULL, 0) == 0)
#define libssh2_sha384_update(ctx, data, datalen) \
_libssh2_wincng_hash_update(&ctx, (unsigned char *) data, datalen)
#define libssh2_sha384_final(ctx, hash) \
_libssh2_wincng_hash_final(&ctx, hash)
#define libssh2_sha384(data, datalen, hash) \
_libssh2_wincng_hash(data, datalen, _libssh2_wincng.hAlgHashSHA384, \
hash, SHA384_DIGEST_LENGTH)
#define libssh2_sha512_ctx _libssh2_wincng_hash_ctx
#define libssh2_sha512_init(ctx) \
(_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHashSHA512, \
SHA512_DIGEST_LENGTH, NULL, 0) == 0)
#define libssh2_sha512_update(ctx, data, datalen) \
_libssh2_wincng_hash_update(&ctx, (unsigned char *) data, datalen)
#define libssh2_sha512_final(ctx, hash) \
_libssh2_wincng_hash_final(&ctx, hash)
#define libssh2_sha512(data, datalen, hash) \
_libssh2_wincng_hash(data, datalen, _libssh2_wincng.hAlgHashSHA512, \
hash, SHA512_DIGEST_LENGTH)
#define libssh2_md5_ctx _libssh2_wincng_hash_ctx
#define libssh2_md5_init(ctx) \
(_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHashMD5, \
MD5_DIGEST_LENGTH, NULL, 0) == 0)
#define libssh2_md5_update(ctx, data, datalen) \
_libssh2_wincng_hash_update(&ctx, (unsigned char *) data, datalen)
#define libssh2_md5_final(ctx, hash) \
_libssh2_wincng_hash_final(&ctx, hash)
#define libssh2_md5(data, datalen, hash) \
_libssh2_wincng_hash(data, datalen, _libssh2_wincng.hAlgHashMD5, \
hash, MD5_DIGEST_LENGTH)
/*
* Windows CNG backend: HMAC functions
*/
#define libssh2_hmac_ctx _libssh2_wincng_hash_ctx
#define libssh2_hmac_ctx_init(ctx)
#define libssh2_hmac_sha1_init(ctx, key, keylen) \
_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHmacSHA1, \
SHA_DIGEST_LENGTH, key, keylen)
#define libssh2_hmac_md5_init(ctx, key, keylen) \
_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHmacMD5, \
MD5_DIGEST_LENGTH, key, keylen)
#define libssh2_hmac_ripemd160_init(ctx, key, keylen)
/* not implemented */
#define libssh2_hmac_sha256_init(ctx, key, keylen) \
_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHmacSHA256, \
SHA256_DIGEST_LENGTH, key, keylen)
#define libssh2_hmac_sha512_init(ctx, key, keylen) \
_libssh2_wincng_hash_init(ctx, _libssh2_wincng.hAlgHmacSHA512, \
SHA512_DIGEST_LENGTH, key, keylen)
#define libssh2_hmac_update(ctx, data, datalen) \
_libssh2_wincng_hash_update(&ctx, (unsigned char *) data, datalen)
#define libssh2_hmac_final(ctx, hash) \
_libssh2_wincng_hmac_final(&ctx, hash)
#define libssh2_hmac_cleanup(ctx) \
_libssh2_wincng_hmac_cleanup(ctx)
/*******************************************************************/
/*
* Windows CNG backend: Key Context structure
*/
typedef struct __libssh2_wincng_key_ctx {
BCRYPT_KEY_HANDLE hKey;
unsigned char *pbKeyObject;
unsigned long cbKeyObject;
} _libssh2_wincng_key_ctx;
/*
* Windows CNG backend: RSA functions
*/
#define libssh2_rsa_ctx _libssh2_wincng_key_ctx
#define _libssh2_rsa_new(rsactx, e, e_len, n, n_len, \
d, d_len, p, p_len, q, q_len, \
e1, e1_len, e2, e2_len, c, c_len) \
_libssh2_wincng_rsa_new(rsactx, e, e_len, n, n_len, \
d, d_len, p, p_len, q, q_len, \
e1, e1_len, e2, e2_len, c, c_len)
#define _libssh2_rsa_new_private(rsactx, s, filename, passphrase) \
_libssh2_wincng_rsa_new_private(rsactx, s, filename, passphrase)
#define _libssh2_rsa_new_private_frommemory(rsactx, s, filedata, \
filedata_len, passphrase) \
_libssh2_wincng_rsa_new_private_frommemory(rsactx, s, filedata, \
filedata_len, passphrase)
#define _libssh2_rsa_sha1_sign(s, rsactx, hash, hash_len, sig, sig_len) \
_libssh2_wincng_rsa_sha1_sign(s, rsactx, hash, hash_len, sig, sig_len)
#define _libssh2_rsa_sha1_verify(rsactx, sig, sig_len, m, m_len) \
_libssh2_wincng_rsa_sha1_verify(rsactx, sig, sig_len, m, m_len)
#define _libssh2_rsa_free(rsactx) \
_libssh2_wincng_rsa_free(rsactx)
/*
* Windows CNG backend: DSA functions
*/
#define libssh2_dsa_ctx _libssh2_wincng_key_ctx
#define _libssh2_dsa_new(dsactx, p, p_len, q, q_len, \
g, g_len, y, y_len, x, x_len) \
_libssh2_wincng_dsa_new(dsactx, p, p_len, q, q_len, \
g, g_len, y, y_len, x, x_len)
#define _libssh2_dsa_new_private(dsactx, s, filename, passphrase) \
_libssh2_wincng_dsa_new_private(dsactx, s, filename, passphrase)
#define _libssh2_dsa_new_private_frommemory(dsactx, s, filedata, \
filedata_len, passphrase) \
_libssh2_wincng_dsa_new_private_frommemory(dsactx, s, filedata, \
filedata_len, passphrase)
#define _libssh2_dsa_sha1_sign(dsactx, hash, hash_len, sig) \
_libssh2_wincng_dsa_sha1_sign(dsactx, hash, hash_len, sig)
#define _libssh2_dsa_sha1_verify(dsactx, sig, m, m_len) \
_libssh2_wincng_dsa_sha1_verify(dsactx, sig, m, m_len)
#define _libssh2_dsa_free(dsactx) \
_libssh2_wincng_dsa_free(dsactx)
/*
* Windows CNG backend: Key functions
*/
#define _libssh2_pub_priv_keyfile(s, m, m_len, p, p_len, pk, pw) \
_libssh2_wincng_pub_priv_keyfile(s, m, m_len, p, p_len, pk, pw)
#define _libssh2_pub_priv_keyfilememory(s, m, m_len, p, p_len, \
pk, pk_len, pw) \
_libssh2_wincng_pub_priv_keyfilememory(s, m, m_len, p, p_len, \
pk, pk_len, pw)
/*******************************************************************/
/*
* Windows CNG backend: Cipher Context structure
*/
struct _libssh2_wincng_cipher_ctx {
BCRYPT_KEY_HANDLE hKey;
unsigned char *pbKeyObject;
unsigned char *pbIV;
unsigned char *pbCtr;
unsigned long dwKeyObject;
unsigned long dwIV;
unsigned long dwBlockLength;
unsigned long dwCtrLength;
};
#define _libssh2_cipher_ctx struct _libssh2_wincng_cipher_ctx
/*
* Windows CNG backend: Cipher Type structure
*/
struct _libssh2_wincng_cipher_type {
BCRYPT_ALG_HANDLE *phAlg;
unsigned long dwKeyLength;
int useIV; /* TODO: Convert to bool when a C89 compatible bool type
is defined */
int ctrMode;
};
#define _libssh2_cipher_type(type) struct _libssh2_wincng_cipher_type type
#define _libssh2_cipher_aes256ctr { &_libssh2_wincng.hAlgAES_ECB, 32, 0, 1 }
#define _libssh2_cipher_aes192ctr { &_libssh2_wincng.hAlgAES_ECB, 24, 0, 1 }
#define _libssh2_cipher_aes128ctr { &_libssh2_wincng.hAlgAES_ECB, 16, 0, 1 }
#define _libssh2_cipher_aes256 { &_libssh2_wincng.hAlgAES_CBC, 32, 1, 0 }
#define _libssh2_cipher_aes192 { &_libssh2_wincng.hAlgAES_CBC, 24, 1, 0 }
#define _libssh2_cipher_aes128 { &_libssh2_wincng.hAlgAES_CBC, 16, 1, 0 }
#define _libssh2_cipher_arcfour { &_libssh2_wincng.hAlgRC4_NA, 16, 0, 0 }
#define _libssh2_cipher_3des { &_libssh2_wincng.hAlg3DES_CBC, 24, 1, 0 }
/*
* Windows CNG backend: Cipher functions
*/
#define _libssh2_cipher_init(ctx, type, iv, secret, encrypt) \
_libssh2_wincng_cipher_init(ctx, type, iv, secret, encrypt)
#define _libssh2_cipher_crypt(ctx, type, encrypt, block, blocklen) \
_libssh2_wincng_cipher_crypt(ctx, type, encrypt, block, blocklen)
#define _libssh2_cipher_dtor(ctx) \
_libssh2_wincng_cipher_dtor(ctx)
/*******************************************************************/
/*
* Windows CNG backend: BigNumber Context
*/
#define _libssh2_bn_ctx int /* not used */
#define _libssh2_bn_ctx_new() 0 /* not used */
#define _libssh2_bn_ctx_free(bnctx) ((void)0) /* not used */
/*******************************************************************/
/*
* Windows CNG backend: BigNumber structure
*/
struct _libssh2_wincng_bignum {
unsigned char *bignum;
unsigned long length;
};
#define _libssh2_bn struct _libssh2_wincng_bignum
/*
* Windows CNG backend: BigNumber functions
*/
_libssh2_bn *_libssh2_wincng_bignum_init(void);
#define _libssh2_bn_init() \
_libssh2_wincng_bignum_init()
#define _libssh2_bn_init_from_bin() \
_libssh2_bn_init()
#define _libssh2_bn_set_word(bn, word) \
_libssh2_wincng_bignum_set_word(bn, word)
#define _libssh2_bn_from_bin(bn, len, bin) \
_libssh2_wincng_bignum_from_bin(bn, len, bin)
#define _libssh2_bn_to_bin(bn, bin) \
_libssh2_wincng_bignum_to_bin(bn, bin)
#define _libssh2_bn_bytes(bn) bn->length
#define _libssh2_bn_bits(bn) \
_libssh2_wincng_bignum_bits(bn)
#define _libssh2_bn_free(bn) \
_libssh2_wincng_bignum_free(bn)
/*
* Windows CNG backend: Diffie-Hellman support
*/
typedef struct {
/* holds our private and public key components */
BCRYPT_KEY_HANDLE dh_handle;
/* records the parsed out modulus and generator
* parameters that are shared with the peer */
BCRYPT_DH_PARAMETER_HEADER *dh_params;
/* records the parsed out private key component for
* fallback if the DH API raw KDF is not supported */
struct _libssh2_wincng_bignum *bn;
} _libssh2_dh_ctx;
#define libssh2_dh_init(dhctx) _libssh2_dh_init(dhctx)
#define libssh2_dh_key_pair(dhctx, public, g, p, group_order, bnctx) \
_libssh2_dh_key_pair(dhctx, public, g, p, group_order)
#define libssh2_dh_secret(dhctx, secret, f, p, bnctx) \
_libssh2_dh_secret(dhctx, secret, f, p)
#define libssh2_dh_dtor(dhctx) _libssh2_dh_dtor(dhctx)
/*******************************************************************/
/*
* Windows CNG backend: forward declarations
*/
void _libssh2_wincng_init(void);
void _libssh2_wincng_free(void);
int _libssh2_wincng_random(void *buf, int len);
int
_libssh2_wincng_hash_init(_libssh2_wincng_hash_ctx *ctx,
BCRYPT_ALG_HANDLE hAlg, unsigned long hashlen,
unsigned char *key, unsigned long keylen);
int
_libssh2_wincng_hash_update(_libssh2_wincng_hash_ctx *ctx,
const unsigned char *data, unsigned long datalen);
int
_libssh2_wincng_hash_final(_libssh2_wincng_hash_ctx *ctx,
unsigned char *hash);
int
_libssh2_wincng_hash(unsigned char *data, unsigned long datalen,
BCRYPT_ALG_HANDLE hAlg,
unsigned char *hash, unsigned long hashlen);
int
_libssh2_wincng_hmac_final(_libssh2_wincng_hash_ctx *ctx,
unsigned char *hash);
void
_libssh2_wincng_hmac_cleanup(_libssh2_wincng_hash_ctx *ctx);
int
_libssh2_wincng_key_sha1_verify(_libssh2_wincng_key_ctx *ctx,
const unsigned char *sig,
unsigned long sig_len,
const unsigned char *m,
unsigned long m_len,
unsigned long flags);
int
_libssh2_wincng_rsa_new(libssh2_rsa_ctx **rsa,
const unsigned char *edata,
unsigned long elen,
const unsigned char *ndata,
unsigned long nlen,
const unsigned char *ddata,
unsigned long dlen,
const unsigned char *pdata,
unsigned long plen,
const unsigned char *qdata,
unsigned long qlen,
const unsigned char *e1data,
unsigned long e1len,
const unsigned char *e2data,
unsigned long e2len,
const unsigned char *coeffdata,
unsigned long coefflen);
int
_libssh2_wincng_rsa_new_private(libssh2_rsa_ctx **rsa,
LIBSSH2_SESSION *session,
const char *filename,
const unsigned char *passphrase);
int
_libssh2_wincng_rsa_new_private_frommemory(libssh2_rsa_ctx **rsa,
LIBSSH2_SESSION *session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
int
_libssh2_wincng_rsa_sha1_verify(libssh2_rsa_ctx *rsa,
const unsigned char *sig,
unsigned long sig_len,
const unsigned char *m,
unsigned long m_len);
int
_libssh2_wincng_rsa_sha1_sign(LIBSSH2_SESSION *session,
libssh2_rsa_ctx *rsa,
const unsigned char *hash,
size_t hash_len,
unsigned char **signature,
size_t *signature_len);
void
_libssh2_wincng_rsa_free(libssh2_rsa_ctx *rsa);
#if LIBSSH2_DSA
int
_libssh2_wincng_dsa_new(libssh2_dsa_ctx **dsa,
const unsigned char *pdata,
unsigned long plen,
const unsigned char *qdata,
unsigned long qlen,
const unsigned char *gdata,
unsigned long glen,
const unsigned char *ydata,
unsigned long ylen,
const unsigned char *xdata,
unsigned long xlen);
int
_libssh2_wincng_dsa_new_private(libssh2_dsa_ctx **dsa,
LIBSSH2_SESSION *session,
const char *filename,
const unsigned char *passphrase);
int
_libssh2_wincng_dsa_new_private_frommemory(libssh2_dsa_ctx **dsa,
LIBSSH2_SESSION *session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
int
_libssh2_wincng_dsa_sha1_verify(libssh2_dsa_ctx *dsa,
const unsigned char *sig_fixed,
const unsigned char *m,
unsigned long m_len);
int
_libssh2_wincng_dsa_sha1_sign(libssh2_dsa_ctx *dsa,
const unsigned char *hash,
unsigned long hash_len,
unsigned char *sig_fixed);
void
_libssh2_wincng_dsa_free(libssh2_dsa_ctx *dsa);
#endif
int
_libssh2_wincng_pub_priv_keyfile(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekey,
const char *passphrase);
int
_libssh2_wincng_pub_priv_keyfilememory(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
const char *privatekeydata,
size_t privatekeydata_len,
const char *passphrase);
int
_libssh2_wincng_cipher_init(_libssh2_cipher_ctx *ctx,
_libssh2_cipher_type(type),
unsigned char *iv,
unsigned char *secret,
int encrypt);
int
_libssh2_wincng_cipher_crypt(_libssh2_cipher_ctx *ctx,
_libssh2_cipher_type(type),
int encrypt,
unsigned char *block,
size_t blocklen);
void
_libssh2_wincng_cipher_dtor(_libssh2_cipher_ctx *ctx);
_libssh2_bn *
_libssh2_wincng_bignum_init(void);
int
_libssh2_wincng_bignum_set_word(_libssh2_bn *bn, unsigned long word);
unsigned long
_libssh2_wincng_bignum_bits(const _libssh2_bn *bn);
void
_libssh2_wincng_bignum_from_bin(_libssh2_bn *bn, unsigned long len,
const unsigned char *bin);
void
_libssh2_wincng_bignum_to_bin(const _libssh2_bn *bn, unsigned char *bin);
void
_libssh2_wincng_bignum_free(_libssh2_bn *bn);
extern void
_libssh2_dh_init(_libssh2_dh_ctx *dhctx);
extern int
_libssh2_dh_key_pair(_libssh2_dh_ctx *dhctx, _libssh2_bn *public,
_libssh2_bn *g, _libssh2_bn *p, int group_order);
extern int
_libssh2_dh_secret(_libssh2_dh_ctx *dhctx, _libssh2_bn *secret,
_libssh2_bn *f, _libssh2_bn *p);
extern void
_libssh2_dh_dtor(_libssh2_dh_ctx *dhctx);
#endif /* __LIBSSH2_WINCNG_H */
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0 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2 | repos/gpt4all.zig/src/zig-libcurl/zig-libssh2/libssh2/src/os400qc3.h | #ifndef __LIBSSH2_OS400QC3_H
#define __LIBSSH2_OS400QC3_H
/*
* Copyright (C) 2015-2016 Patrick Monnerat, D+H <[email protected]>
* Copyright (C) 2020 Patrick Monnerat <[email protected]>.
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include <stdlib.h>
#include <string.h>
#include <qc3cci.h>
/* Redefine character/string literals as always EBCDIC. */
#undef Qc3_Alg_Token
#define Qc3_Alg_Token "\xC1\xD3\xC7\xC4\xF0\xF1\xF0\xF0" /* ALGD0100 */
#undef Qc3_Alg_Block_Cipher
#define Qc3_Alg_Block_Cipher "\xC1\xD3\xC7\xC4\xF0\xF2\xF0\xF0" /* ALGD0200 */
#undef Qc3_Alg_Block_CipherAuth
#define Qc3_Alg_Block_CipherAuth \
"\xC1\xD3\xC7\xC4\xF0\xF2\xF1\xF0" /* ALGD0210 */
#undef Qc3_Alg_Stream_Cipher
#define Qc3_Alg_Stream_Cipher \
"\xC1\xD3\xC7\xC4\xF0\xF3\xF0\xF0" /* ALGD0300 */
#undef Qc3_Alg_Public_Key
#define Qc3_Alg_Public_Key "\xC1\xD3\xC7\xC4\xF0\xF4\xF0\xF0" /* ALGD0400 */
#undef Qc3_Alg_Hash
#define Qc3_Alg_Hash "\xC1\xD3\xC7\xC4\xF0\xF5\xF0\xF0" /* ALGD0500 */
#undef Qc3_Data
#define Qc3_Data "\xC4\xC1\xE3\xC1\xF0\xF1\xF0\xF0" /* DATA0100 */
#undef Qc3_Array
#define Qc3_Array "\xC4\xC1\xE3\xC1\xF0\xF2\xF0\xF0" /* DATA0200 */
#undef Qc3_Key_Token
#define Qc3_Key_Token "\xD2\xC5\xE8\xC4\xF0\xF1\xF0\xF0" /* KEYD0100 */
#undef Qc3_Key_Parms
#define Qc3_Key_Parms "\xD2\xC5\xE8\xC4\xF0\xF2\xF0\xF0" /* KEYD0200 */
#undef Qc3_Key_KSLabel
#define Qc3_Key_KSLabel "\xD2\xC5\xE8\xC4\xF0\xF4\xF0\xF0" /* KEYD0400 */
#undef Qc3_Key_PKCS5
#define Qc3_Key_PKCS5 "\xD2\xC5\xE8\xC4\xF0\xF5\xF0\xF0" /* KEYD0500 */
#undef Qc3_Key_PEMCert
#define Qc3_Key_PEMCert "\xD2\xC5\xE8\xC4\xF0\xF6\xF0\xF0" /* KEYD0600 */
#undef Qc3_Key_CSLabel
#define Qc3_Key_CSLabel "\xD2\xC5\xE8\xC4\xF0\xF7\xF0\xF0" /* KEYD0700 */
#undef Qc3_Key_CSDN
#define Qc3_Key_CSDN "\xD2\xC5\xE8\xC4\xF0\xF8\xF0\xF0" /* KEYD0800 */
#undef Qc3_Key_AppID
#define Qc3_Key_AppID "\xD2\xC5\xE8\xC4\xF0\xF9\xF0\xF0" /* KEYD0900 */
#undef Qc3_ECB
#define Qc3_ECB '\xF0' /* '0' */
#undef Qc3_CBC
#define Qc3_CBC '\xF1' /* '1' */
#undef Qc3_OFB
#define Qc3_OFB '\xF2' /* '2' */
#undef Qc3_CFB1Bit
#define Qc3_CFB1Bit '\xF3' /* '3' */
#undef Qc3_CFB8Bit
#define Qc3_CFB8Bit '\xF4' /* '4' */
#undef Qc3_CFB64Bit
#define Qc3_CFB64Bit '\xF5' /* '5' */
#undef Qc3_CUSP
#define Qc3_CUSP '\xF6' /* '6' */
#undef Qc3_CTR
#define Qc3_CTR '\xF7' /* '7' */
#undef Qc3_CCM
#define Qc3_CCM '\xF8' /* '8' */
#undef Qc3_No_Pad
#define Qc3_No_Pad '\xF0' /* '0' */
#undef Qc3_Pad_Char
#define Qc3_Pad_Char '\xF1' /* '1' */
#undef Qc3_Pad_Counter
#define Qc3_Pad_Counter '\xF2' /* '2' */
#undef Qc3_PKCS1_00
#define Qc3_PKCS1_00 '\xF0' /* '0' */
#undef Qc3_PKCS1_01
#define Qc3_PKCS1_01 '\xF1' /* '1' */
#undef Qc3_PKCS1_02
#define Qc3_PKCS1_02 '\xF2' /* '2' */
#undef Qc3_ISO9796
#define Qc3_ISO9796 '\xF3' /* '3' */
#undef Qc3_Zero_Pad
#define Qc3_Zero_Pad '\xF4' /* '4' */
#undef Qc3_ANSI_X931
#define Qc3_ANSI_X931 '\xF5' /* '5' */
#undef Qc3_OAEP
#define Qc3_OAEP '\xF6' /* '6' */
#undef Qc3_Bin_String
#define Qc3_Bin_String '\xF0' /* '0' */
#undef Qc3_BER_String
#define Qc3_BER_String '\xF1' /* '1' */
#undef Qc3_MK_Struct
#define Qc3_MK_Struct '\xF3' /* '3' */
#undef Qc3_KSLabel_Struct
#define Qc3_KSLabel_Struct '\xF4' /* '4' */
#undef Qc3_PKCS5_Struct
#define Qc3_PKCS5_Struct '\xF5' /* '5' */
#undef Qc3_PEMCert_String
#define Qc3_PEMCert_String '\xF6' /* '6' */
#undef Qc3_CSLabel_String
#define Qc3_CSLabel_String '\xF7' /* '7' */
#undef Qc3_CSDN_String
#define Qc3_CSDN_String '\xF8' /* '8' */
#undef Qc3_Clear
#define Qc3_Clear '\xF0' /* '0' */
#undef Qc3_Encrypted
#define Qc3_Encrypted '\xF1' /* '1' */
#undef Qc3_MK_Encrypted
#define Qc3_MK_Encrypted '\xF2' /* '2' */
#undef Qc3_Any_CSP
#define Qc3_Any_CSP '\xF0' /* '0' */
#undef Qc3_Sfw_CSP
#define Qc3_Sfw_CSP '\xF1' /* '1' */
#undef Qc3_Hdw_CSP
#define Qc3_Hdw_CSP '\xF2' /* '2' */
#undef Qc3_Continue
#define Qc3_Continue '\xF0' /* '0' */
#undef Qc3_Final
#define Qc3_Final '\xF1' /* '1' */
#undef Qc3_MK_New
#define Qc3_MK_New '\xF0' /* '0' */
#undef Qc3_MK_Current
#define Qc3_MK_Current '\xF1' /* '1' */
#undef Qc3_MK_Old
#define Qc3_MK_Old '\xF2' /* '2' */
#undef Qc3_MK_Pending
#define Qc3_MK_Pending '\xF3' /* '3' */
/* Define which features are supported. */
#define LIBSSH2_MD5 1
#define LIBSSH2_HMAC_RIPEMD 0
#define LIBSSH2_HMAC_SHA256 1
#define LIBSSH2_HMAC_SHA512 1
#define LIBSSH2_AES 1
#define LIBSSH2_AES_CTR 1
#define LIBSSH2_BLOWFISH 0
#define LIBSSH2_RC4 1
#define LIBSSH2_CAST 0
#define LIBSSH2_3DES 1
#define LIBSSH2_RSA 1
#define LIBSSH2_DSA 0
#define LIBSSH2_ECDSA 0
#define LIBSSH2_ED25519 0
#define MD5_DIGEST_LENGTH 16
#define SHA_DIGEST_LENGTH 20
#define SHA256_DIGEST_LENGTH 32
#define SHA384_DIGEST_LENGTH 48
#define SHA512_DIGEST_LENGTH 64
#define EC_MAX_POINT_LEN ((528 * 2 / 8) + 1)
#if LIBSSH2_ECDSA
#else
#define _libssh2_ec_key void
#endif
/*******************************************************************
*
* OS/400 QC3 crypto-library backend: global handles structures.
*
*******************************************************************/
/* HMAC & private key algorithms support structure. */
typedef struct _libssh2_os400qc3_crypto_ctx _libssh2_os400qc3_crypto_ctx;
struct _libssh2_os400qc3_crypto_ctx {
Qc3_Format_ALGD0100_T hash; /* Hash algorithm. */
Qc3_Format_KEYD0100_T key; /* Key. */
_libssh2_os400qc3_crypto_ctx * kek; /* Key encryption. */
};
typedef struct { /* Big number. */
unsigned char * bignum; /* Number bits, little-endian. */
unsigned int length; /* Length of bignum (# bytes). */
} _libssh2_bn;
typedef struct { /* Algorithm description. */
char * fmt; /* Format of Qc3 structure. */
int algo; /* Algorithm identifier. */
unsigned char size; /* Block length. */
unsigned char mode; /* Block mode. */
int keylen; /* Key length. */
} _libssh2_os400qc3_cipher_t;
typedef struct { /* Diffie-Hellman context. */
char token[8]; /* Context token. */
} _libssh2_os400qc3_dh_ctx;
/*******************************************************************
*
* OS/400 QC3 crypto-library backend: Define global types/codes.
*
*******************************************************************/
#define libssh2_crypto_init()
#define libssh2_crypto_exit()
#define libssh2_sha1_ctx Qc3_Format_ALGD0100_T
#define libssh2_sha256_ctx Qc3_Format_ALGD0100_T
#define libssh2_sha384_ctx Qc3_Format_ALGD0100_T
#define libssh2_sha512_ctx Qc3_Format_ALGD0100_T
#define libssh2_md5_ctx Qc3_Format_ALGD0100_T
#define libssh2_hmac_ctx _libssh2_os400qc3_crypto_ctx
#define _libssh2_cipher_ctx _libssh2_os400qc3_crypto_ctx
#define libssh2_sha1_init(x) libssh2_os400qc3_hash_init(x, Qc3_SHA1)
#define libssh2_sha1_update(ctx, data, len) \
libssh2_os400qc3_hash_update(&(ctx), data, len)
#define libssh2_sha1_final(ctx, out) \
libssh2_os400qc3_hash_final(&(ctx), out)
#define libssh2_sha256_init(x) libssh2_os400qc3_hash_init(x, Qc3_SHA256)
#define libssh2_sha256_update(ctx, data, len) \
libssh2_os400qc3_hash_update(&(ctx), data, len)
#define libssh2_sha256_final(ctx, out) \
libssh2_os400qc3_hash_final(&(ctx), out)
#define libssh2_sha256(message, len, out) \
libssh2_os400qc3_hash(message, len, out, \
Qc3_SHA256)
#define libssh2_sha384_init(x) libssh2_os400qc3_hash_init(x, Qc3_SHA384)
#define libssh2_sha384_update(ctx, data, len) \
libssh2_os400qc3_hash_update(&(ctx), data, len)
#define libssh2_sha384_final(ctx, out) \
libssh2_os400qc3_hash_final(&(ctx), out)
#define libssh2_sha384(message, len, out) \
libssh2_os400qc3_hash(message, len, out, \
Qc3_SHA384)
#define libssh2_sha512_init(x) libssh2_os400qc3_hash_init(x, Qc3_SHA512)
#define libssh2_sha512_update(ctx, data, len) \
libssh2_os400qc3_hash_update(&(ctx), data, len)
#define libssh2_sha512_final(ctx, out) \
libssh2_os400qc3_hash_final(&(ctx), out)
#define libssh2_sha512(message, len, out) \
libssh2_os400qc3_hash(message, len, out, \
Qc3_SHA512)
#define libssh2_md5_init(x) libssh2_os400qc3_hash_init(x, Qc3_MD5)
#define libssh2_md5_update(ctx, data, len) \
libssh2_os400qc3_hash_update(&(ctx), data, len)
#define libssh2_md5_final(ctx, out) \
libssh2_os400qc3_hash_final(&(ctx), out)
#define libssh2_hmac_ctx_init(ctx) \
memset((char *) &(ctx), 0, \
sizeof(libssh2_hmac_ctx))
#define libssh2_hmac_md5_init(ctx, key, keylen) \
libssh2_os400qc3_hmac_init(ctx, Qc3_MD5, \
MD5_DIGEST_LENGTH, \
key, keylen)
#define libssh2_hmac_sha1_init(ctx, key, keylen) \
libssh2_os400qc3_hmac_init(ctx, Qc3_SHA1, \
SHA_DIGEST_LENGTH, \
key, keylen)
#define libssh2_hmac_sha256_init(ctx, key, keylen) \
libssh2_os400qc3_hmac_init(ctx, Qc3_SHA256, \
SHA256_DIGEST_LENGTH, \
key, keylen)
#define libssh2_hmac_sha512_init(ctx, key, keylen) \
libssh2_os400qc3_hmac_init(ctx, Qc3_SHA512, \
SHA512_DIGEST_LENGTH, \
key, keylen)
#define libssh2_hmac_update(ctx, data, datalen) \
libssh2_os400qc3_hmac_update(&(ctx), \
data, datalen)
#define libssh2_hmac_final(ctx, data) \
libssh2_os400qc3_hmac_final(&(ctx), data)
#define libssh2_hmac_cleanup(ctx) \
_libssh2_os400qc3_crypto_dtor(ctx)
#define _libssh2_bn_ctx int /* Not used. */
#define _libssh2_bn_ctx_new() 0
#define _libssh2_bn_ctx_free(bnctx) ((void) 0)
#define _libssh2_bn_init_from_bin() _libssh2_bn_init()
#define _libssh2_bn_bytes(bn) ((bn)->length)
#define _libssh2_cipher_type(name) _libssh2_os400qc3_cipher_t name
#define _libssh2_cipher_aes128 {Qc3_Alg_Block_Cipher, Qc3_AES, 16, \
Qc3_CBC, 16}
#define _libssh2_cipher_aes192 {Qc3_Alg_Block_Cipher, Qc3_AES, 24, \
Qc3_CBC, 24}
#define _libssh2_cipher_aes256 {Qc3_Alg_Block_Cipher, Qc3_AES, 32, \
Qc3_CBC, 32}
#define _libssh2_cipher_aes128ctr {Qc3_Alg_Block_Cipher, Qc3_AES, 16, \
Qc3_CTR, 16}
#define _libssh2_cipher_aes192ctr {Qc3_Alg_Block_Cipher, Qc3_AES, 24, \
Qc3_CTR, 24}
#define _libssh2_cipher_aes256ctr {Qc3_Alg_Block_Cipher, Qc3_AES, 32, \
Qc3_CTR, 32}
#define _libssh2_cipher_3des {Qc3_Alg_Block_Cipher, Qc3_TDES, 0, \
Qc3_CBC, 24}
#define _libssh2_cipher_arcfour {Qc3_Alg_Stream_Cipher, Qc3_RC4, 0, 0, 16}
#define _libssh2_cipher_dtor(ctx) _libssh2_os400qc3_crypto_dtor(ctx)
#define libssh2_rsa_ctx _libssh2_os400qc3_crypto_ctx
#define _libssh2_rsa_free(ctx) (_libssh2_os400qc3_crypto_dtor(ctx), \
free((char *) ctx))
#define libssh2_prepare_iovec(vec, len) memset((char *) (vec), 0, \
(len) * sizeof(struct iovec))
#define _libssh2_rsa_sha1_signv(session, sig, siglen, count, vector, ctx) \
_libssh2_os400qc3_rsa_sha1_signv(session, sig, siglen, \
count, vector, ctx)
#define _libssh2_dh_ctx _libssh2_os400qc3_dh_ctx
#define libssh2_dh_init(dhctx) _libssh2_os400qc3_dh_init(dhctx)
#define libssh2_dh_key_pair(dhctx, public, g, p, group_order, bnctx) \
_libssh2_os400qc3_dh_key_pair(dhctx, public, g, p, group_order)
#define libssh2_dh_secret(dhctx, secret, f, p, bnctx) \
_libssh2_os400qc3_dh_secret(dhctx, secret, f, p)
#define libssh2_dh_dtor(dhctx) _libssh2_os400qc3_dh_dtor(dhctx)
/*******************************************************************
*
* OS/400 QC3 crypto-library backend: Support procedure prototypes.
*
*******************************************************************/
extern _libssh2_bn * _libssh2_bn_init(void);
extern void _libssh2_bn_free(_libssh2_bn *bn);
extern unsigned long _libssh2_bn_bits(_libssh2_bn *bn);
extern int _libssh2_bn_from_bin(_libssh2_bn *bn, int len,
const unsigned char *v);
extern int _libssh2_bn_set_word(_libssh2_bn *bn, unsigned long val);
extern int _libssh2_bn_to_bin(_libssh2_bn *bn, unsigned char *val);
extern int _libssh2_random(unsigned char *buf, int len);
extern void _libssh2_os400qc3_crypto_dtor(_libssh2_os400qc3_crypto_ctx *x);
extern int libssh2_os400qc3_hash_init(Qc3_Format_ALGD0100_T *x,
unsigned int algo);
extern void libssh2_os400qc3_hash_update(Qc3_Format_ALGD0100_T *ctx,
const unsigned char *data,
int len);
extern void libssh2_os400qc3_hash_final(Qc3_Format_ALGD0100_T *ctx,
unsigned char *out);
extern int libssh2_os400qc3_hash(const unsigned char *message,
unsigned long len, unsigned char *out,
unsigned int algo);
extern void libssh2_os400qc3_hmac_init(_libssh2_os400qc3_crypto_ctx *x,
int algo, size_t minkeylen,
void *key, int keylen);
extern void libssh2_os400qc3_hmac_update(_libssh2_os400qc3_crypto_ctx *ctx,
const unsigned char *data,
int len);
extern void libssh2_os400qc3_hmac_final(_libssh2_os400qc3_crypto_ctx *ctx,
unsigned char *out);
extern int _libssh2_os400qc3_rsa_sha1_signv(LIBSSH2_SESSION *session,
unsigned char **signature,
size_t *signature_len,
int veccount,
const struct iovec vector[],
libssh2_rsa_ctx *ctx);
extern void _libssh2_os400qc3_dh_init(_libssh2_dh_ctx *dhctx);
extern int _libssh2_os400qc3_dh_key_pair(_libssh2_dh_ctx *dhctx,
_libssh2_bn *public,
_libssh2_bn *g,
_libssh2_bn *p, int group_order);
extern int _libssh2_os400qc3_dh_secret(_libssh2_dh_ctx *dhctx,
_libssh2_bn *secret,
_libssh2_bn *f, _libssh2_bn *p);
extern void _libssh2_os400qc3_dh_dtor(_libssh2_dh_ctx *dhctx);
#endif /* __LIBSSH2_OS400QC3_H */
/* vim: set expandtab ts=4 sw=4: */
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Subsets and Splits