text: /* ssl/ssltest.c */
  /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   * All rights reserved.
   *
   * This package is an SSL implementation written
   * by Eric Young (eay@cryptsoft.com).
   * The implementation was written so as to conform with Netscapes SSL.
   *
   * This library is free for commercial and non-commercial use as long as
   * the following conditions are aheared to.  The following conditions
   * apply to all code found in this distribution, be it the RC4, RSA,
   * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
   * included with this distribution is covered by the same copyright terms
   * except that the holder is Tim Hudson (tjh@cryptsoft.com).
   *
   * Copyright remains Eric Young's, and as such any Copyright notices in
   * the code are not to be removed.
   * If this package is used in a product, Eric Young should be given attribution
   * as the author of the parts of the library used.
   * This can be in the form of a textual message at program startup or
   * in documentation (online or textual) provided with the package.
   *
   * 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 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 cryptographic software written by
   *     Eric Young (eay@cryptsoft.com)"
   *    The word 'cryptographic' can be left out if the rouines from the library
   *    being used are not cryptographic related :-).
   * 4. If you include any Windows specific code (or a derivative thereof) from
   *    the apps directory (application code) you must include an acknowledgement:
   *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
   *
   * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 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.
   *
   * The licence and distribution terms for any publically available version or
   * derivative of this code cannot be changed.  i.e. this code cannot simply be
   * copied and put under another distribution licence
   * [including the GNU Public Licence.]
   */
  /* ====================================================================
   * Copyright (c) 1998-2000 The OpenSSL Project.  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 acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
   *
   * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
   *    endorse or promote products derived from this software without
   *    prior written permission. For written permission, please contact
   *    openssl-core@openssl.org.
   *
   * 5. Products derived from this software may not be called "OpenSSL"
   *    nor may "OpenSSL" appear in their names without prior written
   *    permission of the OpenSSL Project.
   *
   * 6. Redistributions of any form whatsoever must retain the following
   *    acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
   *
   * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
   * EXPRESSED 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 OpenSSL PROJECT OR
   * ITS 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 product includes cryptographic software written by Eric Young
   * (eay@cryptsoft.com).  This product includes software written by Tim
   * Hudson (tjh@cryptsoft.com).
   *
   */
  /* ====================================================================
   * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
   * ECC cipher suite support in OpenSSL originally developed by
   * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
   */
  /* ====================================================================
   * Copyright 2005 Nokia. All rights reserved.
   *
   * The portions of the attached software ("Contribution") is developed by
   * Nokia Corporation and is licensed pursuant to the OpenSSL open source
   * license.
   *
   * The Contribution, originally written by Mika Kousa and Pasi Eronen of
   * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
   * support (see RFC 4279) to OpenSSL.
   *
   * No patent licenses or other rights except those expressly stated in
   * the OpenSSL open source license shall be deemed granted or received
   * expressly, by implication, estoppel, or otherwise.
   *
   * No assurances are provided by Nokia that the Contribution does not
   * infringe the patent or other intellectual property rights of any third
   * party or that the license provides you with all the necessary rights
   * to make use of the Contribution.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
   * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
   * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
   * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
   * OTHERWISE.
   */
  
  /* Or gethostname won't be declared properly on Linux and GNU platforms. */
  #define _BSD_SOURCE 1
  #define _DEFAULT_SOURCE 1
  
  #include <assert.h>
  #include <errno.h>
  #include <limits.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <time.h>
  
  #define USE_SOCKETS
  #include "e_os.h"
  
  #ifdef OPENSSL_SYS_VMS
  /*
   * Or isascii won't be declared properly on VMS (at least with DECompHP C).
   */
  # define _XOPEN_SOURCE 500
  #endif
  
  #include <ctype.h>
  
  #include <openssl/bio.h>
  #include <openssl/crypto.h>
  #include <openssl/evp.h>
  #include <openssl/x509.h>
  #include <openssl/x509v3.h>
  #include <openssl/ssl.h>
  #ifndef OPENSSL_NO_ENGINE
  # include <openssl/engine.h>
  #endif
  #include <openssl/err.h>
  #include <openssl/rand.h>
  #ifndef OPENSSL_NO_RSA
  # include <openssl/rsa.h>
  #endif
  #ifndef OPENSSL_NO_DSA
  # include <openssl/dsa.h>
  #endif
  #ifndef OPENSSL_NO_DH
  # include <openssl/dh.h>
  #endif
  #ifndef OPENSSL_NO_SRP
  # include <openssl/srp.h>
  #endif
  #include <openssl/bn.h>
  
  /*
   * Or gethostname won't be declared properly
   * on Compaq platforms (at least with DEC C).
   * Do not try to put it earlier, or IPv6 includes
   * get screwed...
   */
  #define _XOPEN_SOURCE_EXTENDED  1
  
  #ifdef OPENSSL_SYS_WINDOWS
  # include <winsock.h>
  #else
  # include OPENSSL_UNISTD
  #endif
  
  #ifdef OPENSSL_SYS_VMS
  # define TEST_SERVER_CERT "SYS$DISK:[-.APPS]SERVER.PEM"
  # define TEST_CLIENT_CERT "SYS$DISK:[-.APPS]CLIENT.PEM"
  #elif defined(OPENSSL_SYS_WINCE)
  # define TEST_SERVER_CERT "\\OpenSSL\\server.pem"
  # define TEST_CLIENT_CERT "\\OpenSSL\\client.pem"
  #elif defined(OPENSSL_SYS_NETWARE)
  # define TEST_SERVER_CERT "\\openssl\\apps\\server.pem"
  # define TEST_CLIENT_CERT "\\openssl\\apps\\client.pem"
  #else
  # define TEST_SERVER_CERT "../apps/server.pem"
  # define TEST_CLIENT_CERT "../apps/client.pem"
  #endif
  
  static SSL_CTX *s_ctx = NULL;
  static SSL_CTX *s_ctx2 = NULL;
  
  /*
   * There is really no standard for this, so let's assign some tentative
   * numbers.  In any case, these numbers are only for this test
   */
  #define COMP_RLE        255
  #define COMP_ZLIB       1
  
  static int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx);
  #ifndef OPENSSL_NO_RSA
  static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);
  static void free_tmp_rsa(void);
  #endif
  static int MS_CALLBACK app_verify_callback(X509_STORE_CTX *ctx, void *arg);
  #define APP_CALLBACK_STRING "Test Callback Argument"
  struct app_verify_arg {
      char *string;
      int app_verify;
      int allow_proxy_certs;
      char *proxy_auth;
      char *proxy_cond;
  };
  
  #ifndef OPENSSL_NO_DH
  static DH *get_dh512(void);
  static DH *get_dh1024(void);
  static DH *get_dh1024dsa(void);
  #endif
  
  static char *psk_key = NULL;    /* by default PSK is not used */
  #ifndef OPENSSL_NO_PSK
  static unsigned int psk_client_callback(SSL *ssl, const char *hint,
                                          char *identity,
                                          unsigned int max_identity_len,
                                          unsigned char *psk,
                                          unsigned int max_psk_len);
  static unsigned int psk_server_callback(SSL *ssl, const char *identity,
                                          unsigned char *psk,
                                          unsigned int max_psk_len);
  #endif
  
  #ifndef OPENSSL_NO_SRP
  /* SRP client */
  /* This is a context that we pass to all callbacks */
  typedef struct srp_client_arg_st {
      char *srppassin;
      char *srplogin;
  } SRP_CLIENT_ARG;
  
  # define PWD_STRLEN 1024
  
  static char *MS_CALLBACK ssl_give_srp_client_pwd_cb(SSL *s, void *arg)
  {
      SRP_CLIENT_ARG *srp_client_arg = (SRP_CLIENT_ARG *)arg;
      return BUF_strdup((char *)srp_client_arg->srppassin);
  }
  
  /* SRP server */
  /* This is a context that we pass to SRP server callbacks */
  typedef struct srp_server_arg_st {
      char *expected_user;
      char *pass;
  } SRP_SERVER_ARG;
  
  static int MS_CALLBACK ssl_srp_server_param_cb(SSL *s, int *ad, void *arg)
  {
      SRP_SERVER_ARG *p = (SRP_SERVER_ARG *)arg;
  
      if (strcmp(p->expected_user, SSL_get_srp_username(s)) != 0) {
          fprintf(stderr, "User %s doesn't exist\n", SSL_get_srp_username(s));
          return SSL3_AL_FATAL;
      }
      if (SSL_set_srp_server_param_pw(s, p->expected_user, p->pass, "1024") < 0) {
          *ad = SSL_AD_INTERNAL_ERROR;
          return SSL3_AL_FATAL;
      }
      return SSL_ERROR_NONE;
  }
  #endif
  
  static BIO *bio_err = NULL;
  static BIO *bio_stdout = NULL;
  
  static const char *alpn_client;
  static char *alpn_server;
  static char *alpn_server2;
  static const char *alpn_expected;
  static unsigned char *alpn_selected;
  static const char *sn_client;
  static const char *sn_server1;
  static const char *sn_server2;
  static int sn_expect = 0;
  static int s_ticket1 = 0;
  static int s_ticket2 = 0;
  static int c_ticket = 0;
  static int ticket_expect = -1;
  
  static int servername_cb(SSL *s, int *ad, void *arg)
  {
      const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
      if (sn_server2 == NULL) {
          BIO_printf(bio_stdout, "Servername 2 is NULL\n");
          return SSL_TLSEXT_ERR_NOACK;
      }
  
      if (servername != NULL) {
          if (s_ctx2 != NULL && sn_server2 != NULL &&
              !strcasecmp(servername, sn_server2)) {
              BIO_printf(bio_stdout, "Switching server context.\n");
              SSL_set_SSL_CTX(s, s_ctx2);
              /* Copy over all the SSL_CTX options */
              SSL_clear_options(s, 0xFFFFFFFFL);
              SSL_set_options(s, SSL_CTX_get_options(s_ctx2));
          }
      }
      return SSL_TLSEXT_ERR_OK;
  }
  static int verify_servername(SSL *client, SSL *server)
  {
      /* just need to see if sn_context is what we expect */
      SSL_CTX* ctx = SSL_get_SSL_CTX(server);
      if (sn_expect == 0)
          return 0;
      if (sn_expect == 1 && ctx == s_ctx)
          return 0;
      if (sn_expect == 2 && ctx == s_ctx2)
          return 0;
      BIO_printf(bio_stdout, "Servername: expected context %d\n", sn_expect);
      if (ctx == s_ctx2)
          BIO_printf(bio_stdout, "Servername: context is 2\n");
      else if (ctx == s_ctx)
          BIO_printf(bio_stdout, "Servername: context is 1\n");
      else
          BIO_printf(bio_stdout, "Servername: context is unknown\n");
      return -1;
  }
  
  static int verify_ticket(SSL* ssl)
  {
      if (ticket_expect == -1)
          return 0;
      if (ticket_expect == 0 &&
          (ssl->session->tlsext_tick == NULL ||
           ssl->session->tlsext_ticklen == 0))
          return 1;
      if (ticket_expect == 1 &&
          (ssl->session->tlsext_tick != NULL &&
           ssl->session->tlsext_ticklen != 0))
          return 1;
      return -1;
  }
  
  /*-
   * next_protos_parse parses a comma separated list of strings into a string
   * in a format suitable for passing to SSL_CTX_set_next_protos_advertised.
   *   outlen: (output) set to the length of the resulting buffer on success.
   *   err: (maybe NULL) on failure, an error message line is written to this BIO.
   *   in: a NUL terminated string like "abc,def,ghi"
   *
   *   returns: a malloced buffer or NULL on failure.
   */
  static unsigned char *next_protos_parse(unsigned short *outlen,
                                          const char *in)
  {
      size_t len;
      unsigned char *out;
      size_t i, start = 0;
  
      len = strlen(in);
      if (len >= 65535)
          return NULL;
  
      out = OPENSSL_malloc(strlen(in) + 1);
      if (!out)
          return NULL;
  
      for (i = 0; i <= len; ++i) {
          if (i == len || in[i] == ',') {
              if (i - start > 255) {
                  OPENSSL_free(out);
                  return NULL;
              }
              out[start] = i - start;
              start = i + 1;
          } else
              out[i + 1] = in[i];
      }
  
      *outlen = len + 1;
      return out;
  }
  
  static int cb_server_alpn(SSL *s, const unsigned char **out,
                            unsigned char *outlen, const unsigned char *in,
                            unsigned int inlen, void *arg)
  {
      unsigned char *protos;
      unsigned short protos_len;
      char* alpn_str = arg;
  
      protos = next_protos_parse(&protos_len, alpn_str);
      if (protos == NULL) {
          fprintf(stderr, "failed to parser ALPN server protocol string: %s\n",
                  alpn_str);
          abort();
      }
  
      if (SSL_select_next_proto
          ((unsigned char **)out, outlen, protos, protos_len, in,
           inlen) != OPENSSL_NPN_NEGOTIATED) {
          OPENSSL_free(protos);
          return SSL_TLSEXT_ERR_NOACK;
      }
  
      /*
       * Make a copy of the selected protocol which will be freed in
       * verify_alpn.
       */
      alpn_selected = OPENSSL_malloc(*outlen);
      memcpy(alpn_selected, *out, *outlen);
      *out = alpn_selected;
  
      OPENSSL_free(protos);
      return SSL_TLSEXT_ERR_OK;
  }
  
  static int verify_alpn(SSL *client, SSL *server)
  {
      const unsigned char *client_proto, *server_proto;
      unsigned int client_proto_len = 0, server_proto_len = 0;
      SSL_get0_alpn_selected(client, &client_proto, &client_proto_len);
      SSL_get0_alpn_selected(server, &server_proto, &server_proto_len);
  
      if (alpn_selected != NULL) {
          OPENSSL_free(alpn_selected);
          alpn_selected = NULL;
      }
  
      if (client_proto_len != server_proto_len ||
          memcmp(client_proto, server_proto, client_proto_len) != 0) {
          BIO_printf(bio_stdout, "ALPN selected protocols differ!\n");
          goto err;
      }
  
      if (client_proto_len > 0 && alpn_expected == NULL) {
          BIO_printf(bio_stdout, "ALPN unexpectedly negotiated\n");
          goto err;
      }
  
      if (alpn_expected != NULL &&
          (client_proto_len != strlen(alpn_expected) ||
           memcmp(client_proto, alpn_expected, client_proto_len) != 0)) {
          BIO_printf(bio_stdout,
                     "ALPN selected protocols not equal to expected protocol: %s\n",
                     alpn_expected);
          goto err;
      }
  
      return 0;
  
   err:
      BIO_printf(bio_stdout, "ALPN results: client: '");
      BIO_write(bio_stdout, client_proto, client_proto_len);
      BIO_printf(bio_stdout, "', server: '");
      BIO_write(bio_stdout, server_proto, server_proto_len);
      BIO_printf(bio_stdout, "'\n");
      BIO_printf(bio_stdout, "ALPN configured: client: '%s', server: ",
                     alpn_client);
      if (SSL_get_SSL_CTX(server) == s_ctx2) {
          BIO_printf(bio_stdout, "'%s'\n",
                     alpn_server2);
      } else if (SSL_get_SSL_CTX(server) == s_ctx){
          BIO_printf(bio_stdout, "'%s'\n",
                     alpn_server);
      } else {
          BIO_printf(bio_stdout, "unknown\n");
      }
      return -1;
  }
  
  #ifndef OPENSSL_NO_TLSEXT
  
  static int cb_ticket0(SSL* s, unsigned char* key_name, unsigned char *iv, EVP_CIPHER_CTX *ctx, HMAC_CTX *hctx, int enc)
  {
      return 0;
  }
  
  static int cb_ticket1(SSL* s, unsigned char* key_name, unsigned char *iv, EVP_CIPHER_CTX *ctx, HMAC_CTX *hctx, int enc)
  {
      static unsigned char key[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
      static char name[] = "ticket11ticket11";
      if (SSL_get_options(s) & SSL_OP_NO_TICKET)
          return 0;
      if (enc) {
          RAND_pseudo_bytes(iv, EVP_MAX_IV_LENGTH);
          EVP_EncryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv);
          HMAC_Init_ex(hctx, key, sizeof(key), EVP_sha1(), NULL);
          memcpy(key_name, name, 16);
          return 1;
      } else {
          if (memcmp(key_name, name, 16) == 0) {
              EVP_DecryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv);
              HMAC_Init_ex(hctx, key, sizeof(key), EVP_sha1(), NULL);
              return 1;
          }
      }
      return 0;
  }
  
  static int cb_ticket2(SSL* s, unsigned char* key_name, unsigned char *iv, EVP_CIPHER_CTX *ctx, HMAC_CTX *hctx, int enc)
  {
      fprintf(stderr, "ticket callback for SNI context should never be called\n");
      EXIT(1);
  }
  #endif
  
  #define SCT_EXT_TYPE 18
  
  /*
   * WARNING : below extension types are *NOT* IETF assigned, and could
   * conflict if these types are reassigned and handled specially by OpenSSL
   * in the future
   */
  #define TACK_EXT_TYPE 62208
  #define CUSTOM_EXT_TYPE_0 1000
  #define CUSTOM_EXT_TYPE_1 1001
  #define CUSTOM_EXT_TYPE_2 1002
  #define CUSTOM_EXT_TYPE_3 1003
  
  const char custom_ext_cli_string[] = "abc";
  const char custom_ext_srv_string[] = "defg";
  
  /* These set from cmdline */
  char *serverinfo_file = NULL;
  int serverinfo_sct = 0;
  int serverinfo_tack = 0;
  
  /* These set based on extension callbacks */
  int serverinfo_sct_seen = 0;
  int serverinfo_tack_seen = 0;
  int serverinfo_other_seen = 0;
  
  /* This set from cmdline */
  int custom_ext = 0;
  
  /* This set based on extension callbacks */
  int custom_ext_error = 0;
  
  static int serverinfo_cli_parse_cb(SSL *s, unsigned int ext_type,
                                     const unsigned char *in, size_t inlen,
                                     int *al, void *arg)
  {
      if (ext_type == SCT_EXT_TYPE)
          serverinfo_sct_seen++;
      else if (ext_type == TACK_EXT_TYPE)
          serverinfo_tack_seen++;
      else
          serverinfo_other_seen++;
      return 1;
  }
  
  static int verify_serverinfo()
  {
      if (serverinfo_sct != serverinfo_sct_seen)
          return -1;
      if (serverinfo_tack != serverinfo_tack_seen)
          return -1;
      if (serverinfo_other_seen)
          return -1;
      return 0;
  }
  
  /*-
   * Four test cases for custom extensions:
   * 0 - no ClientHello extension or ServerHello response
   * 1 - ClientHello with "abc", no response
   * 2 - ClientHello with "abc", empty response
   * 3 - ClientHello with "abc", "defg" response
   */
  
  static int custom_ext_0_cli_add_cb(SSL *s, unsigned int ext_type,
                                     const unsigned char **out,
                                     size_t *outlen, int *al, void *arg)
  {
      if (ext_type != CUSTOM_EXT_TYPE_0)
          custom_ext_error = 1;
      return 0;                   /* Don't send an extension */
  }
  
  static int custom_ext_0_cli_parse_cb(SSL *s, unsigned int ext_type,
                                       const unsigned char *in,
                                       size_t inlen, int *al, void *arg)
  {
      return 1;
  }
  
  static int custom_ext_1_cli_add_cb(SSL *s, unsigned int ext_type,
                                     const unsigned char **out,
                                     size_t *outlen, int *al, void *arg)
  {
      if (ext_type != CUSTOM_EXT_TYPE_1)
          custom_ext_error = 1;
      *out = (const unsigned char *)custom_ext_cli_string;
      *outlen = strlen(custom_ext_cli_string);
      return 1;                   /* Send "abc" */
  }
  
  static int custom_ext_1_cli_parse_cb(SSL *s, unsigned int ext_type,
                                       const unsigned char *in,
                                       size_t inlen, int *al, void *arg)
  {
      return 1;
  }
  
  static int custom_ext_2_cli_add_cb(SSL *s, unsigned int ext_type,
                                     const unsigned char **out,
                                     size_t *outlen, int *al, void *arg)
  {
      if (ext_type != CUSTOM_EXT_TYPE_2)
          custom_ext_error = 1;
      *out = (const unsigned char *)custom_ext_cli_string;
      *outlen = strlen(custom_ext_cli_string);
      return 1;                   /* Send "abc" */
  }
  
  static int custom_ext_2_cli_parse_cb(SSL *s, unsigned int ext_type,
                                       const unsigned char *in,
                                       size_t inlen, int *al, void *arg)
  {
      if (ext_type != CUSTOM_EXT_TYPE_2)
          custom_ext_error = 1;
      if (inlen != 0)
          custom_ext_error = 1;   /* Should be empty response */
      return 1;
  }
  
  static int custom_ext_3_cli_add_cb(SSL *s, unsigned int ext_type,
                                     const unsigned char **out,
                                     size_t *outlen, int *al, void *arg)
  {
      if (ext_type != CUSTOM_EXT_TYPE_3)
          custom_ext_error = 1;
      *out = (const unsigned char *)custom_ext_cli_string;
      *outlen = strlen(custom_ext_cli_string);
      return 1;                   /* Send "abc" */
  }
  
  static int custom_ext_3_cli_parse_cb(SSL *s, unsigned int ext_type,
                                       const unsigned char *in,
                                       size_t inlen, int *al, void *arg)
  {
      if (ext_type != CUSTOM_EXT_TYPE_3)
          custom_ext_error = 1;
      if (inlen != strlen(custom_ext_srv_string))
          custom_ext_error = 1;
      if (memcmp(custom_ext_srv_string, in, inlen) != 0)
          custom_ext_error = 1;   /* Check for "defg" */
      return 1;
  }
  
  /*
   * custom_ext_0_cli_add_cb returns 0 - the server won't receive a callback
   * for this extension
   */
  static int custom_ext_0_srv_parse_cb(SSL *s, unsigned int ext_type,
                                       const unsigned char *in,
                                       size_t inlen, int *al, void *arg)
  {
      custom_ext_error = 1;
      return 1;
  }
  
  /* 'add' callbacks are only called if the 'parse' callback is called */
  static int custom_ext_0_srv_add_cb(SSL *s, unsigned int ext_type,
                                     const unsigned char **out,
                                     size_t *outlen, int *al, void *arg)
  {
      /* Error: should not have been called */
      custom_ext_error = 1;
      return 0;                   /* Don't send an extension */
  }
  
  static int custom_ext_1_srv_parse_cb(SSL *s, unsigned int ext_type,
                                       const unsigned char *in,
                                       size_t inlen, int *al, void *arg)
  {
      if (ext_type != CUSTOM_EXT_TYPE_1)
          custom_ext_error = 1;
      /* Check for "abc" */
      if (inlen != strlen(custom_ext_cli_string))
          custom_ext_error = 1;
      if (memcmp(in, custom_ext_cli_string, inlen) != 0)
          custom_ext_error = 1;
      return 1;
  }
  
  static int custom_ext_1_srv_add_cb(SSL *s, unsigned int ext_type,
                                     const unsigned char **out,
                                     size_t *outlen, int *al, void *arg)
  {
      return 0;                   /* Don't send an extension */
  }
  
  static int custom_ext_2_srv_parse_cb(SSL *s, unsigned int ext_type,
                                       const unsigned char *in,
                                       size_t inlen, int *al, void *arg)
  {
      if (ext_type != CUSTOM_EXT_TYPE_2)
          custom_ext_error = 1;
      /* Check for "abc" */
      if (inlen != strlen(custom_ext_cli_string))
          custom_ext_error = 1;
      if (memcmp(in, custom_ext_cli_string, inlen) != 0)
          custom_ext_error = 1;
      return 1;
  }
  
  static int custom_ext_2_srv_add_cb(SSL *s, unsigned int ext_type,
                                     const unsigned char **out,
                                     size_t *outlen, int *al, void *arg)
  {
      *out = NULL;
      *outlen = 0;
      return 1;                   /* Send empty extension */
  }
  
  static int custom_ext_3_srv_parse_cb(SSL *s, unsigned int ext_type,
                                       const unsigned char *in,
                                       size_t inlen, int *al, void *arg)
  {
      if (ext_type != CUSTOM_EXT_TYPE_3)
          custom_ext_error = 1;
      /* Check for "abc" */
      if (inlen != strlen(custom_ext_cli_string))
          custom_ext_error = 1;
      if (memcmp(in, custom_ext_cli_string, inlen) != 0)
          custom_ext_error = 1;
      return 1;
  }
  
  static int custom_ext_3_srv_add_cb(SSL *s, unsigned int ext_type,
                                     const unsigned char **out,
                                     size_t *outlen, int *al, void *arg)
  {
      *out = (const unsigned char *)custom_ext_srv_string;
      *outlen = strlen(custom_ext_srv_string);
      return 1;                   /* Send "defg" */
  }
  
  static char *cipher = NULL;
  static int verbose = 0;
  static int debug = 0;
  #if 0
  /* Not used yet. */
  # ifdef FIONBIO
  static int s_nbio = 0;
  # endif
  #endif
  
  static const char rnd_seed[] =
      "string to make the random number generator think it has entropy";
  
  int doit_biopair(SSL *s_ssl, SSL *c_ssl, long bytes, clock_t *s_time,
                   clock_t *c_time);
  int doit(SSL *s_ssl, SSL *c_ssl, long bytes);
  static int do_test_cipherlist(void);
  static void sv_usage(void)
  {
      fprintf(stderr, "usage: ssltest [args ...]\n");
      fprintf(stderr, "\n");
  #ifdef OPENSSL_FIPS
      fprintf(stderr, "-F             - run test in FIPS mode\n");
  #endif
      fprintf(stderr, " -server_auth  - check server certificate\n");
      fprintf(stderr, " -client_auth  - do client authentication\n");
      fprintf(stderr, " -proxy        - allow proxy certificates\n");
      fprintf(stderr, " -proxy_auth <val> - set proxy policy rights\n");
      fprintf(stderr,
              " -proxy_cond <val> - expression to test proxy policy rights\n");
      fprintf(stderr, " -v            - more output\n");
      fprintf(stderr, " -d            - debug output\n");
      fprintf(stderr, " -reuse        - use session-id reuse\n");
      fprintf(stderr, " -num <val>    - number of connections to perform\n");
      fprintf(stderr,
              " -bytes <val>  - number of bytes to swap between client/server\n");
  #ifndef OPENSSL_NO_DH
      fprintf(stderr,
              " -dhe512       - use 512 bit key for DHE (to test failure)\n");
      fprintf(stderr,
              " -dhe1024      - use 1024 bit key (safe prime) for DHE (default, no-op)\n");
      fprintf(stderr,
              " -dhe1024dsa   - use 1024 bit key (with 160-bit subprime) for DHE\n");
      fprintf(stderr, " -no_dhe       - disable DHE\n");
  #endif
  #ifndef OPENSSL_NO_ECDH
      fprintf(stderr, " -no_ecdhe     - disable ECDHE\n");
  #endif
  #ifndef OPENSSL_NO_PSK
      fprintf(stderr, " -psk arg      - PSK in hex (without 0x)\n");
  #endif
  #ifndef OPENSSL_NO_SRP
      fprintf(stderr, " -srpuser user  - SRP username to use\n");
      fprintf(stderr, " -srppass arg   - password for 'user'\n");
  #endif
  #ifndef OPENSSL_NO_SSL2
      fprintf(stderr, " -ssl2         - use SSLv2\n");
  #endif
  #ifndef OPENSSL_NO_SSL3_METHOD
      fprintf(stderr, " -ssl3         - use SSLv3\n");
  #endif
  #ifndef OPENSSL_NO_TLS1
      fprintf(stderr, " -tls1         - use TLSv1\n");
  #endif
  #ifndef OPENSSL_NO_DTLS
      fprintf(stderr, " -dtls1        - use DTLSv1\n");
      fprintf(stderr, " -dtls12       - use DTLSv1.2\n");
  #endif
      fprintf(stderr, " -CApath arg   - PEM format directory of CA's\n");
      fprintf(stderr, " -CAfile arg   - PEM format file of CA's\n");
      fprintf(stderr, " -cert arg     - Server certificate file\n");
      fprintf(stderr,
              " -key arg      - Server key file (default: same as -cert)\n");
      fprintf(stderr, " -c_cert arg   - Client certificate file\n");
      fprintf(stderr,
              " -c_key arg    - Client key file (default: same as -c_cert)\n");
      fprintf(stderr, " -cipher arg   - The cipher list\n");
      fprintf(stderr, " -bio_pair     - Use BIO pairs\n");
      fprintf(stderr, " -f            - Test even cases that can't work\n");
      fprintf(stderr,
              " -time         - measure processor time used by client and server\n");
      fprintf(stderr, " -zlib         - use zlib compression\n");
      fprintf(stderr, " -rle          - use rle compression\n");
  #ifndef OPENSSL_NO_ECDH
      fprintf(stderr,
              " -named_curve arg  - Elliptic curve name to use for ephemeral ECDH keys.\n"
              "                 Use \"openssl ecparam -list_curves\" for all names\n"
              "                 (default is sect163r2).\n");
  #endif
      fprintf(stderr,
              " -test_cipherlist - Verifies the order of the ssl cipher lists.\n"
              "                    When this option is requested, the cipherlist\n"
              "                    tests are run instead of handshake tests.\n");
      fprintf(stderr, " -serverinfo_file file - have server use this file\n");
      fprintf(stderr, " -serverinfo_sct  - have client offer and expect SCT\n");
      fprintf(stderr,
              " -serverinfo_tack - have client offer and expect TACK\n");
      fprintf(stderr,
              " -custom_ext - try various custom extension callbacks\n");
      fprintf(stderr, " -alpn_client <string> - have client side offer ALPN\n");
      fprintf(stderr, " -alpn_server <string> - have server side offer ALPN\n");
      fprintf(stderr, " -alpn_server1 <string> - alias for -alpn_server\n");
      fprintf(stderr, " -alpn_server2 <string> - have server side context 2 offer ALPN\n");
      fprintf(stderr,
              " -alpn_expected <string> - the ALPN protocol that should be negotiated\n");
      fprintf(stderr, " -sn_client <string>  - have client request this servername\n");
      fprintf(stderr, " -sn_server1 <string> - have server context 1 respond to this servername\n");
      fprintf(stderr, " -sn_server2 <string> - have server context 2 respond to this servername\n");
      fprintf(stderr, " -sn_expect1          - expected server 1\n");
      fprintf(stderr, " -sn_expect2          - expected server 2\n");
  #ifndef OPENSSL_NO_TLSEXT
      fprintf(stderr, " -s_ticket1 <yes|no|broken> - enable/disable session tickets on context 1\n");
      fprintf(stderr, " -s_ticket2 <yes|no>        - enable/disable session tickets on context 2\n");
      fprintf(stderr, " -c_ticket <yes|no>         - enable/disable session tickets on the client\n");
      fprintf(stderr, " -ticket_expect <yes|no>    - indicate that the client should (or should not) have a ticket\n");
  #endif
  }
  
  static void print_details(SSL *c_ssl, const char *prefix)
  {
      const SSL_CIPHER *ciph;
      X509 *cert;
  
      ciph = SSL_get_current_cipher(c_ssl);
      BIO_printf(bio_stdout, "%s%s, cipher %s %s",
                 prefix,
                 SSL_get_version(c_ssl),
                 SSL_CIPHER_get_version(ciph), SSL_CIPHER_get_name(ciph));
      cert = SSL_get_peer_certificate(c_ssl);
      if (cert != NULL) {
          EVP_PKEY *pkey = X509_get_pubkey(cert);
          if (pkey != NULL) {
              if (0) ;
  #ifndef OPENSSL_NO_RSA
              else if (pkey->type == EVP_PKEY_RSA && pkey->pkey.rsa != NULL
                       && pkey->pkey.rsa->n != NULL) {
                  BIO_printf(bio_stdout, ", %d bit RSA",
                             BN_num_bits(pkey->pkey.rsa->n));
              }
  #endif
  #ifndef OPENSSL_NO_DSA
              else if (pkey->type == EVP_PKEY_DSA && pkey->pkey.dsa != NULL
                       && pkey->pkey.dsa->p != NULL) {
                  BIO_printf(bio_stdout, ", %d bit DSA",
                             BN_num_bits(pkey->pkey.dsa->p));
              }
  #endif
              EVP_PKEY_free(pkey);
          }
          X509_free(cert);
      }
      /*
       * The SSL API does not allow us to look at temporary RSA/DH keys,
       * otherwise we should print their lengths too
       */
      BIO_printf(bio_stdout, "\n");
  }
  
  static void lock_dbg_cb(int mode, int type, const char *file, int line)
  {
      static int modes[CRYPTO_NUM_LOCKS]; /* = {0, 0, ... } */
      const char *errstr = NULL;
      int rw;
  
      rw = mode & (CRYPTO_READ | CRYPTO_WRITE);
      if (!((rw == CRYPTO_READ) || (rw == CRYPTO_WRITE))) {
          errstr = "invalid mode";
          goto err;
      }
  
      if (type < 0 || type >= CRYPTO_NUM_LOCKS) {
          errstr = "type out of bounds";
          goto err;
      }
  
      if (mode & CRYPTO_LOCK) {
          if (modes[type]) {
              errstr = "already locked";
              /*
               * must not happen in a single-threaded program (would deadlock)
               */
              goto err;
          }
  
          modes[type] = rw;
      } else if (mode & CRYPTO_UNLOCK) {
          if (!modes[type]) {
              errstr = "not locked";
              goto err;
          }
  
          if (modes[type] != rw) {
              errstr = (rw == CRYPTO_READ) ?
                  "CRYPTO_r_unlock on write lock" :
                  "CRYPTO_w_unlock on read lock";
          }
  
          modes[type] = 0;
      } else {
          errstr = "invalid mode";
          goto err;
      }
  
   err:
      if (errstr) {
          /* we cannot use bio_err here */
          fprintf(stderr,
                  "openssl (lock_dbg_cb): %s (mode=%d, type=%d) at %s:%d\n",
                  errstr, mode, type, file, line);
      }
  }
  
  #ifdef TLSEXT_TYPE_opaque_prf_input
  struct cb_info_st {
      void *input;
      size_t len;
      int ret;
  };
  struct cb_info_st co1 = { "C", 1, 1 }; /* try to negotiate oqaque PRF input */
  struct cb_info_st co2 = { "C", 1, 2 }; /* insist on oqaque PRF input */
  struct cb_info_st so1 = { "S", 1, 1 }; /* try to negotiate oqaque PRF input */
  struct cb_info_st so2 = { "S", 1, 2 }; /* insist on oqaque PRF input */
  
  int opaque_prf_input_cb(SSL *ssl, void *peerinput, size_t len, void *arg_)
  {
      struct cb_info_st *arg = arg_;
  
      if (arg == NULL)
          return 1;
  
      if (!SSL_set_tlsext_opaque_prf_input(ssl, arg->input, arg->len))
          return 0;
      return arg->ret;
  }
  #endif
  
  int main(int argc, char *argv[])
  {
      char *CApath = NULL, *CAfile = NULL;
      int badop = 0;
      int bio_pair = 0;
      int force = 0;
      int dtls1 = 0, dtls12 = 0, tls1 = 0, ssl2 = 0, ssl3 = 0, ret = 1;
      int client_auth = 0;
      int server_auth = 0, i;
      struct app_verify_arg app_verify_arg =
          { APP_CALLBACK_STRING, 0, 0, NULL, NULL };
      char *server_cert = TEST_SERVER_CERT;
      char *server_key = NULL;
      char *client_cert = TEST_CLIENT_CERT;
      char *client_key = NULL;
  #ifndef OPENSSL_NO_ECDH
      char *named_curve = NULL;
  #endif
      SSL_CTX *c_ctx = NULL;
      const SSL_METHOD *meth = NULL;
      SSL *c_ssl, *s_ssl;
      int number = 1, reuse = 0;
      long bytes = 256L;
  #ifndef OPENSSL_NO_DH
      DH *dh;
      int dhe512 = 0, dhe1024dsa = 0;
  #endif
  #ifndef OPENSSL_NO_ECDH
      EC_KEY *ecdh = NULL;
  #endif
  #ifndef OPENSSL_NO_SRP
      /* client */
      SRP_CLIENT_ARG srp_client_arg = { NULL, NULL };
      /* server */
      SRP_SERVER_ARG srp_server_arg = { NULL, NULL };
  #endif
      int no_dhe = 0;
      int no_ecdhe = 0;
      int no_psk = 0;
      int print_time = 0;
      clock_t s_time = 0, c_time = 0;
  #ifndef OPENSSL_NO_COMP
      int comp = 0;
      COMP_METHOD *cm = NULL;
      STACK_OF(SSL_COMP) *ssl_comp_methods = NULL;
  #endif
      int test_cipherlist = 0;
  #ifdef OPENSSL_FIPS
      int fips_mode = 0;
  #endif
      int no_protocol = 0;
  
      verbose = 0;
      debug = 0;
      cipher = 0;
  
      bio_err = BIO_new_fp(stderr, BIO_NOCLOSE | BIO_FP_TEXT);
  
      CRYPTO_set_locking_callback(lock_dbg_cb);
  
      /* enable memory leak checking unless explicitly disabled */
      if (!((getenv("OPENSSL_DEBUG_MEMORY") != NULL)
            && (0 == strcmp(getenv("OPENSSL_DEBUG_MEMORY"), "off")))) {
          CRYPTO_malloc_debug_init();
          CRYPTO_set_mem_debug_options(V_CRYPTO_MDEBUG_ALL);
      } else {
          /* OPENSSL_DEBUG_MEMORY=off */
          CRYPTO_set_mem_debug_functions(0, 0, 0, 0, 0);
      }
      CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
  
      RAND_seed(rnd_seed, sizeof rnd_seed);
  
      bio_stdout = BIO_new_fp(stdout, BIO_NOCLOSE | BIO_FP_TEXT);
  
      argc--;
      argv++;
  
      while (argc >= 1) {
          if (!strcmp(*argv, "-F")) {
  #ifdef OPENSSL_FIPS
              fips_mode = 1;
  #else
              fprintf(stderr,
                      "not compiled with FIPS support, so exiting without running.\n");
              EXIT(0);
  #endif
          } else if (strcmp(*argv, "-server_auth") == 0)
              server_auth = 1;
          else if (strcmp(*argv, "-client_auth") == 0)
              client_auth = 1;
          else if (strcmp(*argv, "-proxy_auth") == 0) {
              if (--argc < 1)
                  goto bad;
              app_verify_arg.proxy_auth = *(++argv);
          } else if (strcmp(*argv, "-proxy_cond") == 0) {
              if (--argc < 1)
                  goto bad;
              app_verify_arg.proxy_cond = *(++argv);
          } else if (strcmp(*argv, "-v") == 0)
              verbose = 1;
          else if (strcmp(*argv, "-d") == 0)
              debug = 1;
          else if (strcmp(*argv, "-reuse") == 0)
              reuse = 1;
          else if (strcmp(*argv, "-dhe512") == 0) {
  #ifndef OPENSSL_NO_DH
              dhe512 = 1;
  #else
              fprintf(stderr,
                      "ignoring -dhe512, since I'm compiled without DH\n");
  #endif
          } else if (strcmp(*argv, "-dhe1024dsa") == 0) {
  #ifndef OPENSSL_NO_DH
              dhe1024dsa = 1;
  #else
              fprintf(stderr,
                      "ignoring -dhe1024dsa, since I'm compiled without DH\n");
  #endif
          } else if (strcmp(*argv, "-no_dhe") == 0)
              no_dhe = 1;
          else if (strcmp(*argv, "-no_ecdhe") == 0)
              no_ecdhe = 1;
          else if (strcmp(*argv, "-psk") == 0) {
              if (--argc < 1)
                  goto bad;
              psk_key = *(++argv);
  #ifndef OPENSSL_NO_PSK
              if (strspn(psk_key, "abcdefABCDEF1234567890") != strlen(psk_key)) {
                  BIO_printf(bio_err, "Not a hex number '%s'\n", *argv);
                  goto bad;
              }
  #else
              no_psk = 1;
  #endif
          }
  #ifndef OPENSSL_NO_SRP
          else if (strcmp(*argv, "-srpuser") == 0) {
              if (--argc < 1)
                  goto bad;
              srp_server_arg.expected_user = srp_client_arg.srplogin =
                  *(++argv);
              tls1 = 1;
          } else if (strcmp(*argv, "-srppass") == 0) {
              if (--argc < 1)
                  goto bad;
              srp_server_arg.pass = srp_client_arg.srppassin = *(++argv);
              tls1 = 1;
          }
  #endif
          else if (strcmp(*argv, "-ssl2") == 0) {
  #ifdef OPENSSL_NO_SSL2
              no_protocol = 1;
  #endif
              ssl2 = 1;
          } else if (strcmp(*argv, "-tls1") == 0) {
  #ifdef OPENSSL_NO_TLS1
              no_protocol = 1;
  #endif
              tls1 = 1;
          } else if (strcmp(*argv, "-ssl3") == 0) {
  #ifdef OPENSSL_NO_SSL3_METHOD
              no_protocol = 1;
  #endif
              ssl3 = 1;
          } else if (strcmp(*argv, "-dtls1") == 0) {
  #ifdef OPENSSL_NO_DTLS
              no_protocol = 1;
  #endif
              dtls1 = 1;
          } else if (strcmp(*argv, "-dtls12") == 0) {
  #ifdef OPENSSL_NO_DTLS
              no_protocol = 1;
  #endif
              dtls12 = 1;
          } else if (strncmp(*argv, "-num", 4) == 0) {
              if (--argc < 1)
                  goto bad;
              number = atoi(*(++argv));
              if (number == 0)
                  number = 1;
          } else if (strcmp(*argv, "-bytes") == 0) {
              if (--argc < 1)
                  goto bad;
              bytes = atol(*(++argv));
              if (bytes == 0L)
                  bytes = 1L;
              i = strlen(argv[0]);
              if (argv[0][i - 1] == 'k')
                  bytes *= 1024L;
              if (argv[0][i - 1] == 'm')
                  bytes *= 1024L * 1024L;
          } else if (strcmp(*argv, "-cert") == 0) {
              if (--argc < 1)
                  goto bad;
              server_cert = *(++argv);
          } else if (strcmp(*argv, "-s_cert") == 0) {
              if (--argc < 1)
                  goto bad;
              server_cert = *(++argv);
          } else if (strcmp(*argv, "-key") == 0) {
              if (--argc < 1)
                  goto bad;
              server_key = *(++argv);
          } else if (strcmp(*argv, "-s_key") == 0) {
              if (--argc < 1)
                  goto bad;
              server_key = *(++argv);
          } else if (strcmp(*argv, "-c_cert") == 0) {
              if (--argc < 1)
                  goto bad;
              client_cert = *(++argv);
          } else if (strcmp(*argv, "-c_key") == 0) {
              if (--argc < 1)
                  goto bad;
              client_key = *(++argv);
          } else if (strcmp(*argv, "-cipher") == 0) {
              if (--argc < 1)
                  goto bad;
              cipher = *(++argv);
          } else if (strcmp(*argv, "-CApath") == 0) {
              if (--argc < 1)
                  goto bad;
              CApath = *(++argv);
          } else if (strcmp(*argv, "-CAfile") == 0) {
              if (--argc < 1)
                  goto bad;
              CAfile = *(++argv);
          } else if (strcmp(*argv, "-bio_pair") == 0) {
              bio_pair = 1;
          } else if (strcmp(*argv, "-f") == 0) {
              force = 1;
          } else if (strcmp(*argv, "-time") == 0) {
              print_time = 1;
          }
          else if (strcmp(*argv, "-zlib") == 0) {
  #ifndef OPENSSL_NO_COMP
              comp = COMP_ZLIB;
  #else
              fprintf(stderr,
                      "ignoring -zlib, since I'm compiled without COMP\n");
  #endif
          } else if (strcmp(*argv, "-rle") == 0) {
  #ifndef OPENSSL_NO_COMP
              comp = COMP_RLE;
  #else
              fprintf(stderr,
                      "ignoring -rle, since I'm compiled without COMP\n");
  #endif
          }
          else if (strcmp(*argv, "-named_curve") == 0) {
              if (--argc < 1)
                  goto bad;
  #ifndef OPENSSL_NO_ECDH
              named_curve = *(++argv);
  #else
              fprintf(stderr,
                      "ignoring -named_curve, since I'm compiled without ECDH\n");
              ++argv;
  #endif
          } else if (strcmp(*argv, "-app_verify") == 0) {
              app_verify_arg.app_verify = 1;
          } else if (strcmp(*argv, "-proxy") == 0) {
              app_verify_arg.allow_proxy_certs = 1;
          } else if (strcmp(*argv, "-test_cipherlist") == 0) {
              test_cipherlist = 1;
          } else if (strcmp(*argv, "-serverinfo_sct") == 0) {
              serverinfo_sct = 1;
          } else if (strcmp(*argv, "-serverinfo_tack") == 0) {
              serverinfo_tack = 1;
          } else if (strcmp(*argv, "-serverinfo_file") == 0) {
              if (--argc < 1)
                  goto bad;
              serverinfo_file = *(++argv);
          } else if (strcmp(*argv, "-custom_ext") == 0) {
              custom_ext = 1;
          } else if (strcmp(*argv, "-alpn_client") == 0) {
              if (--argc < 1)
                  goto bad;
              alpn_client = *(++argv);
          } else if (strcmp(*argv, "-alpn_server") == 0 ||
                     strcmp(*argv, "-alpn_server1") == 0) {
              if (--argc < 1)
                  goto bad;
              alpn_server = *(++argv);
          } else if (strcmp(*argv, "-alpn_server2") == 0) {
              if (--argc < 1)
                  goto bad;
              alpn_server2 = *(++argv);
          } else if (strcmp(*argv, "-alpn_expected") == 0) {
              if (--argc < 1)
                  goto bad;
              alpn_expected = *(++argv);
          } else if (strcmp(*argv, "-sn_client") == 0) {
              if (--argc < 1)
                  goto bad;
              sn_client = *(++argv);
          } else if (strcmp(*argv, "-sn_server1") == 0) {
              if (--argc < 1)
                  goto bad;
              sn_server1 = *(++argv);
          } else if (strcmp(*argv, "-sn_server2") == 0) {
              if (--argc < 1)
                  goto bad;
              sn_server2 = *(++argv);
          } else if (strcmp(*argv, "-sn_expect1") == 0) {
              sn_expect = 1;
          } else if (strcmp(*argv, "-sn_expect2") == 0) {
              sn_expect = 2;
  #ifndef OPENSSL_NO_TLSEXT
          } else if (strcmp(*argv, "-s_ticket1") == 0) {
              if (--argc < 1)
                  goto bad;
              argv++;
              if (strcmp(*argv, "yes") == 0)
                  s_ticket1 = 1;
              if (strcmp(*argv, "broken") == 0)
                  s_ticket1 = 2;
          } else if (strcmp(*argv, "-s_ticket2") == 0) {
              if (--argc < 1)
                  goto bad;
              argv++;
              if (strcmp(*argv, "yes") == 0)
                  s_ticket2 = 1;
          } else if (strcmp(*argv, "-c_ticket") == 0) {
              if (--argc < 1)
                  goto bad;
              argv++;
              if (strcmp(*argv, "yes") == 0)
                  c_ticket = 1;
          } else if (strcmp(*argv, "-ticket_expect") == 0) {
              if (--argc < 1)
                  goto bad;
              argv++;
              if (strcmp(*argv, "yes") == 0)
                  ticket_expect = 1;
              else if (strcmp(*argv, "no") == 0)
                  ticket_expect = 0;
  #endif
          } else {
              fprintf(stderr, "unknown option %s\n", *argv);
              badop = 1;
              break;
          }
          argc--;
          argv++;
      }
      if (badop) {
   bad:
          sv_usage();
          goto end;
      }
  
      /*
       * test_cipherlist prevails over protocol switch: we test the cipherlist
       * for all enabled protocols.
       */
      if (test_cipherlist == 1) {
          /*
           * ensure that the cipher list are correctly sorted and exit
           */
          fprintf(stdout, "Testing cipherlist order only. Ignoring all "
                  "other options.\n");
          if (do_test_cipherlist() == 0)
              EXIT(1);
          ret = 0;
          goto end;
      }
  
      if (ssl2 + ssl3 + tls1 + dtls1 + dtls12 > 1) {
          fprintf(stderr, "At most one of -ssl2, -ssl3, -tls1, -dtls1 or -dtls12 should "
                  "be requested.\n");
          EXIT(1);
      }
  
      /*
       * Testing was requested for a compiled-out protocol (e.g. SSLv2).
       * Ideally, we would error out, but the generic test wrapper can't know
       * when to expect failure. So we do nothing and return success.
       */
      if (no_protocol) {
          fprintf(stderr, "Testing was requested for a disabled protocol. "
                  "Skipping tests.\n");
          ret = 0;
          goto end;
      }
  
      if (!ssl2 && !ssl3 && !tls1 && !dtls1 && !dtls12 && number > 1 && !reuse && !force) {
          fprintf(stderr, "This case cannot work.  Use -f to perform "
                  "the test anyway (and\n-d to see what happens), "
                  "or add one of ssl2, -ssl3, -tls1, -dtls1, -dtls12, -reuse\n"
                  "to avoid protocol mismatch.\n");
          EXIT(1);
      }
  #ifdef OPENSSL_FIPS
      if (fips_mode) {
          if (!FIPS_mode_set(1)) {
              ERR_load_crypto_strings();
              ERR_print_errors(BIO_new_fp(stderr, BIO_NOCLOSE));
              EXIT(1);
          } else
              fprintf(stderr, "*** IN FIPS MODE ***\n");
      }
  #endif
  
      if (print_time) {
          if (!bio_pair) {
              fprintf(stderr, "Using BIO pair (-bio_pair)\n");
              bio_pair = 1;
          }
          if (number < 50 && !force)
              fprintf(stderr,
                      "Warning: For accurate timings, use more connections (e.g. -num 1000)\n");
      }
  
  /*      if (cipher == NULL) cipher=getenv("SSL_CIPHER"); */
  
      SSL_library_init();
      SSL_load_error_strings();
  
  #ifndef OPENSSL_NO_COMP
      if (comp == COMP_ZLIB)
          cm = COMP_zlib();
      if (comp == COMP_RLE)
          cm = COMP_rle();
      if (cm != NULL) {
          if (cm->type != NID_undef) {
              if (SSL_COMP_add_compression_method(comp, cm) != 0) {
                  fprintf(stderr, "Failed to add compression method\n");
                  ERR_print_errors_fp(stderr);
              }
          } else {
              fprintf(stderr,
                      "Warning: %s compression not supported\n",
                      (comp == COMP_RLE ? "rle" :
                       (comp == COMP_ZLIB ? "zlib" : "unknown")));
              ERR_print_errors_fp(stderr);
          }
      }
      ssl_comp_methods = SSL_COMP_get_compression_methods();
      fprintf(stderr, "Available compression methods:\n");
      {
          int j, n = sk_SSL_COMP_num(ssl_comp_methods);
          if (n == 0)
              fprintf(stderr, "  NONE\n");
          else
              for (j = 0; j < n; j++) {
                  SSL_COMP *c = sk_SSL_COMP_value(ssl_comp_methods, j);
                  fprintf(stderr, "  %d: %s\n", c->id, c->name);
              }
      }
  #endif
  
      /*
       * At this point, ssl2/ssl3/tls1 is only set if the protocol is
       * available. (Otherwise we exit early.) However the compiler doesn't
       * know this, so we ifdef.
       */
  #ifndef OPENSSL_NO_SSL2
      if (ssl2)
          meth = SSLv2_method();
      else
  #endif
  #ifndef OPENSSL_NO_SSL3
      if (ssl3)
          meth = SSLv3_method();
      else
  #endif
  #ifndef OPENSSL_NO_DTLS
      if (dtls1)
          meth = DTLSv1_method();
      else if (dtls12)
          meth = DTLSv1_2_method();
      else
  #endif
  #ifndef OPENSSL_NO_TLS1
      if (tls1)
          meth = TLSv1_method();
      else
  #endif
          meth = SSLv23_method();
  
      c_ctx = SSL_CTX_new(meth);
      s_ctx = SSL_CTX_new(meth);
      s_ctx2 = SSL_CTX_new(meth); /* no SSL_CTX_dup! */
      if ((c_ctx == NULL) || (s_ctx == NULL) || (s_ctx2 == NULL)) {
          ERR_print_errors(bio_err);
          goto end;
      }
  
      if (cipher != NULL) {
          SSL_CTX_set_cipher_list(c_ctx, cipher);
          SSL_CTX_set_cipher_list(s_ctx, cipher);
          SSL_CTX_set_cipher_list(s_ctx2, cipher);
      }
  
  #ifndef OPENSSL_NO_DH
      if (!no_dhe) {
          if (dhe1024dsa) {
              /*
               * use SSL_OP_SINGLE_DH_USE to avoid small subgroup attacks
               */
              SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
              SSL_CTX_set_options(s_ctx2, SSL_OP_SINGLE_DH_USE);
              dh = get_dh1024dsa();
          } else if (dhe512)
              dh = get_dh512();
          else
              dh = get_dh1024();
          SSL_CTX_set_tmp_dh(s_ctx, dh);
          SSL_CTX_set_tmp_dh(s_ctx2, dh);
          DH_free(dh);
      }
  #else
      (void)no_dhe;
  #endif
  
  #ifndef OPENSSL_NO_ECDH
      if (!no_ecdhe) {
          int nid;
  
          if (named_curve != NULL) {
              nid = OBJ_sn2nid(named_curve);
              if (nid == 0) {
                  BIO_printf(bio_err, "unknown curve name (%s)\n", named_curve);
                  goto end;
              }
          } else {
              nid = NID_X9_62_prime256v1;
          }
  
          ecdh = EC_KEY_new_by_curve_name(nid);
          if (ecdh == NULL) {
              BIO_printf(bio_err, "unable to create curve\n");
              goto end;
          }
  
          SSL_CTX_set_tmp_ecdh(s_ctx, ecdh);
          SSL_CTX_set_tmp_ecdh(s_ctx2, ecdh);
          SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_ECDH_USE);
          SSL_CTX_set_options(s_ctx2, SSL_OP_SINGLE_ECDH_USE);
          EC_KEY_free(ecdh);
      }
  #else
      (void)no_ecdhe;
  #endif
  
  #ifndef OPENSSL_NO_RSA
      SSL_CTX_set_tmp_rsa_callback(s_ctx, tmp_rsa_cb);
      SSL_CTX_set_tmp_rsa_callback(s_ctx2, tmp_rsa_cb);
  #endif
  
  #ifdef TLSEXT_TYPE_opaque_prf_input
      SSL_CTX_set_tlsext_opaque_prf_input_callback(c_ctx, opaque_prf_input_cb);
      SSL_CTX_set_tlsext_opaque_prf_input_callback(s_ctx, opaque_prf_input_cb);
      SSL_CTX_set_tlsext_opaque_prf_input_callback(s_ctx2, opaque_prf_input_cb);
      /* or &co2 or NULL */
      SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(c_ctx, &co1);
      /* or &so2 or NULL */
      SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(s_ctx, &so1);
      SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(s_ctx2, &so1);
  #endif
  
      if (!SSL_CTX_use_certificate_file(s_ctx, server_cert, SSL_FILETYPE_PEM)) {
          ERR_print_errors(bio_err);
      } else if (!SSL_CTX_use_PrivateKey_file(s_ctx,
                                              (server_key ? server_key :
                                               server_cert),
                                              SSL_FILETYPE_PEM)) {
          ERR_print_errors(bio_err);
          goto end;
      }
  
      if (!SSL_CTX_use_certificate_file(s_ctx2, server_cert, SSL_FILETYPE_PEM)) {
          ERR_print_errors(bio_err);
      } else if (!SSL_CTX_use_PrivateKey_file(s_ctx2,
                                              (server_key ? server_key :
                                               server_cert),
                                              SSL_FILETYPE_PEM)) {
          ERR_print_errors(bio_err);
          goto end;
      }
  
      if (client_auth) {
          SSL_CTX_use_certificate_file(c_ctx, client_cert, SSL_FILETYPE_PEM);
          SSL_CTX_use_PrivateKey_file(c_ctx,
                                      (client_key ? client_key : client_cert),
                                      SSL_FILETYPE_PEM);
      }
  
      if ((!SSL_CTX_load_verify_locations(s_ctx, CAfile, CApath)) ||
          (!SSL_CTX_set_default_verify_paths(s_ctx)) ||
          (!SSL_CTX_load_verify_locations(s_ctx2, CAfile, CApath)) ||
          (!SSL_CTX_set_default_verify_paths(s_ctx2)) ||
          (!SSL_CTX_load_verify_locations(c_ctx, CAfile, CApath)) ||
          (!SSL_CTX_set_default_verify_paths(c_ctx))) {
          /* fprintf(stderr,"SSL_load_verify_locations\n"); */
          ERR_print_errors(bio_err);
          /* goto end; */
      }
  
      if (client_auth) {
          BIO_printf(bio_err, "client authentication\n");
          SSL_CTX_set_verify(s_ctx,
                             SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
                             verify_callback);
          SSL_CTX_set_cert_verify_callback(s_ctx, app_verify_callback,
                                           &app_verify_arg);
          SSL_CTX_set_verify(s_ctx2,
                             SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
                             verify_callback);
          SSL_CTX_set_cert_verify_callback(s_ctx2, app_verify_callback,
                                           &app_verify_arg);
      }
      if (server_auth) {
          BIO_printf(bio_err, "server authentication\n");
          SSL_CTX_set_verify(c_ctx, SSL_VERIFY_PEER, verify_callback);
          SSL_CTX_set_cert_verify_callback(c_ctx, app_verify_callback,
                                           &app_verify_arg);
      }
  
      {
          int session_id_context = 0;
          SSL_CTX_set_session_id_context(s_ctx, (void *)&session_id_context,
                                         sizeof session_id_context);
          SSL_CTX_set_session_id_context(s_ctx2, (void *)&session_id_context,
                                         sizeof session_id_context);
      }
  
      /* Use PSK only if PSK key is given */
      if (psk_key != NULL) {
          /*
           * no_psk is used to avoid putting psk command to openssl tool
           */
          if (no_psk) {
              /*
               * if PSK is not compiled in and psk key is given, do nothing and
               * exit successfully
               */
              ret = 0;
              goto end;
          }
  #ifndef OPENSSL_NO_PSK
          SSL_CTX_set_psk_client_callback(c_ctx, psk_client_callback);
          SSL_CTX_set_psk_server_callback(s_ctx, psk_server_callback);
          SSL_CTX_set_psk_server_callback(s_ctx2, psk_server_callback);
          if (debug)
              BIO_printf(bio_err, "setting PSK identity hint to s_ctx\n");
          if (!SSL_CTX_use_psk_identity_hint(s_ctx, "ctx server identity_hint")) {
              BIO_printf(bio_err, "error setting PSK identity hint to s_ctx\n");
              ERR_print_errors(bio_err);
              goto end;
          }
          if (!SSL_CTX_use_psk_identity_hint(s_ctx2, "ctx server identity_hint")) {
              BIO_printf(bio_err, "error setting PSK identity hint to s_ctx2\n");
              ERR_print_errors(bio_err);
              goto end;
          }
  #endif
      }
  #ifndef OPENSSL_NO_SRP
      if (srp_client_arg.srplogin) {
          if (!SSL_CTX_set_srp_username(c_ctx, srp_client_arg.srplogin)) {
              BIO_printf(bio_err, "Unable to set SRP username\n");
              goto end;
          }
          SSL_CTX_set_srp_cb_arg(c_ctx, &srp_client_arg);
          SSL_CTX_set_srp_client_pwd_callback(c_ctx,
                                              ssl_give_srp_client_pwd_cb);
          /*
           * SSL_CTX_set_srp_strength(c_ctx, srp_client_arg.strength);
           */
      }
  
      if (srp_server_arg.expected_user != NULL) {
          SSL_CTX_set_verify(s_ctx, SSL_VERIFY_NONE, verify_callback);
          SSL_CTX_set_verify(s_ctx2, SSL_VERIFY_NONE, verify_callback);
          SSL_CTX_set_srp_cb_arg(s_ctx, &srp_server_arg);
          SSL_CTX_set_srp_cb_arg(s_ctx2, &srp_server_arg);
          SSL_CTX_set_srp_username_callback(s_ctx, ssl_srp_server_param_cb);
          SSL_CTX_set_srp_username_callback(s_ctx2, ssl_srp_server_param_cb);
      }
  #endif
  
      if (serverinfo_sct)
          SSL_CTX_add_client_custom_ext(c_ctx, SCT_EXT_TYPE,
                                        NULL, NULL, NULL,
                                        serverinfo_cli_parse_cb, NULL);
      if (serverinfo_tack)
          SSL_CTX_add_client_custom_ext(c_ctx, TACK_EXT_TYPE,
                                        NULL, NULL, NULL,
                                        serverinfo_cli_parse_cb, NULL);
  
      if (serverinfo_file) {
          if (!SSL_CTX_use_serverinfo_file(s_ctx, serverinfo_file)) {
              BIO_printf(bio_err, "missing serverinfo file\n");
              goto end;
          }
          if (!SSL_CTX_use_serverinfo_file(s_ctx2, serverinfo_file)) {
              BIO_printf(bio_err, "missing serverinfo file\n");
              goto end;
          }
      }
  
      if (custom_ext) {
          SSL_CTX_add_client_custom_ext(c_ctx, CUSTOM_EXT_TYPE_0,
                                        custom_ext_0_cli_add_cb,
                                        NULL, NULL,
                                        custom_ext_0_cli_parse_cb, NULL);
          SSL_CTX_add_client_custom_ext(c_ctx, CUSTOM_EXT_TYPE_1,
                                        custom_ext_1_cli_add_cb,
                                        NULL, NULL,
                                        custom_ext_1_cli_parse_cb, NULL);
          SSL_CTX_add_client_custom_ext(c_ctx, CUSTOM_EXT_TYPE_2,
                                        custom_ext_2_cli_add_cb,
                                        NULL, NULL,
                                        custom_ext_2_cli_parse_cb, NULL);
          SSL_CTX_add_client_custom_ext(c_ctx, CUSTOM_EXT_TYPE_3,
                                        custom_ext_3_cli_add_cb,
                                        NULL, NULL,
                                        custom_ext_3_cli_parse_cb, NULL);
  
          SSL_CTX_add_server_custom_ext(s_ctx, CUSTOM_EXT_TYPE_0,
                                        custom_ext_0_srv_add_cb,
                                        NULL, NULL,
                                        custom_ext_0_srv_parse_cb, NULL);
          SSL_CTX_add_server_custom_ext(s_ctx, CUSTOM_EXT_TYPE_1,
                                        custom_ext_1_srv_add_cb,
                                        NULL, NULL,
                                        custom_ext_1_srv_parse_cb, NULL);
          SSL_CTX_add_server_custom_ext(s_ctx, CUSTOM_EXT_TYPE_2,
                                        custom_ext_2_srv_add_cb,
                                        NULL, NULL,
                                        custom_ext_2_srv_parse_cb, NULL);
          SSL_CTX_add_server_custom_ext(s_ctx, CUSTOM_EXT_TYPE_3,
                                        custom_ext_3_srv_add_cb,
                                        NULL, NULL,
                                        custom_ext_3_srv_parse_cb, NULL);
  
          SSL_CTX_add_server_custom_ext(s_ctx2, CUSTOM_EXT_TYPE_0,
                                        custom_ext_0_srv_add_cb,
                                        NULL, NULL,
                                        custom_ext_0_srv_parse_cb, NULL);
          SSL_CTX_add_server_custom_ext(s_ctx2, CUSTOM_EXT_TYPE_1,
                                        custom_ext_1_srv_add_cb,
                                        NULL, NULL,
                                        custom_ext_1_srv_parse_cb, NULL);
          SSL_CTX_add_server_custom_ext(s_ctx2, CUSTOM_EXT_TYPE_2,
                                        custom_ext_2_srv_add_cb,
                                        NULL, NULL,
                                        custom_ext_2_srv_parse_cb, NULL);
          SSL_CTX_add_server_custom_ext(s_ctx2, CUSTOM_EXT_TYPE_3,
                                        custom_ext_3_srv_add_cb,
                                        NULL, NULL,
                                        custom_ext_3_srv_parse_cb, NULL);
      }
  
      if (alpn_server)
          SSL_CTX_set_alpn_select_cb(s_ctx, cb_server_alpn, alpn_server);
      if (alpn_server2)
          SSL_CTX_set_alpn_select_cb(s_ctx2, cb_server_alpn, alpn_server2);
  
      if (alpn_client) {
          unsigned short alpn_len;
          unsigned char *alpn = next_protos_parse(&alpn_len, alpn_client);
  
          if (alpn == NULL) {
              BIO_printf(bio_err, "Error parsing -alpn_client argument\n");
              goto end;
          }
          SSL_CTX_set_alpn_protos(c_ctx, alpn, alpn_len);
          OPENSSL_free(alpn);
      }
  
      if (sn_server1 || sn_server2)
          SSL_CTX_set_tlsext_servername_callback(s_ctx, servername_cb);
  
  #ifndef OPENSSL_NO_TLSEXT
      if (s_ticket1 == 0)
          SSL_CTX_set_options(s_ctx, SSL_OP_NO_TICKET);
      /* always set the callback */
      if (s_ticket1 == 2)
          SSL_CTX_set_tlsext_ticket_key_cb(s_ctx, cb_ticket0);
      else
          SSL_CTX_set_tlsext_ticket_key_cb(s_ctx, cb_ticket1);
  
      if (!s_ticket2)
          SSL_CTX_set_options(s_ctx2, SSL_OP_NO_TICKET);
      /* always set the callback - this should never be called */
      SSL_CTX_set_tlsext_ticket_key_cb(s_ctx2, cb_ticket2);
  
      if (!c_ticket)
          SSL_CTX_set_options(c_ctx, SSL_OP_NO_TICKET);
  #endif
  
      c_ssl = SSL_new(c_ctx);
      s_ssl = SSL_new(s_ctx);
  
      if (sn_client)
          SSL_set_tlsext_host_name(c_ssl, sn_client);
  
  #ifndef OPENSSL_NO_KRB5
      if (c_ssl && c_ssl->kssl_ctx) {
          char localhost[MAXHOSTNAMELEN + 2];
  
          if (gethostname(localhost, sizeof localhost - 1) == 0) {
              localhost[sizeof localhost - 1] = '\0';
              if (strlen(localhost) == sizeof localhost - 1) {
                  BIO_printf(bio_err, "localhost name too long\n");
                  goto end;
              }
              kssl_ctx_setstring(c_ssl->kssl_ctx, KSSL_SERVER, localhost);
          }
      }
  #endif                          /* OPENSSL_NO_KRB5 */
  
      for (i = 0; i < number; i++) {
          if (!reuse)
              SSL_set_session(c_ssl, NULL);
          if (bio_pair)
              ret = doit_biopair(s_ssl, c_ssl, bytes, &s_time, &c_time);
          else
              ret = doit(s_ssl, c_ssl, bytes);
      }
  
      if (!verbose) {
          print_details(c_ssl, "");
      }
      if ((number > 1) || (bytes > 1L))
          BIO_printf(bio_stdout, "%d handshakes of %ld bytes done\n", number,
                     bytes);
      if (print_time) {
  #ifdef CLOCKS_PER_SEC
          /*
           * "To determine the time in seconds, the value returned by the clock
           * function should be divided by the value of the macro
           * CLOCKS_PER_SEC." -- ISO/IEC 9899
           */
          BIO_printf(bio_stdout, "Approximate total server time: %6.2f s\n"
                     "Approximate total client time: %6.2f s\n",
                     (double)s_time / CLOCKS_PER_SEC,
                     (double)c_time / CLOCKS_PER_SEC);
  #else
          /*
           * "`CLOCKS_PER_SEC' undeclared (first use this function)" -- cc on
           * NeXTstep/OpenStep
           */
          BIO_printf(bio_stdout,
                     "Approximate total server time: %6.2f units\n"
                     "Approximate total client time: %6.2f units\n",
                     (double)s_time, (double)c_time);
  #endif
      }
  
      if (verify_alpn(c_ssl, s_ssl) < 0)
          ret = 1;
      if (verify_servername(c_ssl, s_ssl) < 0)
          ret = 1;
      if (verify_ticket(c_ssl) < 0)
          ret = 1;
  
      SSL_free(s_ssl);
      SSL_free(c_ssl);
  
   end:
      if (s_ctx != NULL)
          SSL_CTX_free(s_ctx);
      if (s_ctx2 != NULL)
          SSL_CTX_free(s_ctx2);
      if (c_ctx != NULL)
          SSL_CTX_free(c_ctx);
  
      if (bio_stdout != NULL)
          BIO_free(bio_stdout);
  
  #ifndef OPENSSL_NO_RSA
      free_tmp_rsa();
  #endif
  #ifndef OPENSSL_NO_ENGINE
      ENGINE_cleanup();
  #endif
      CRYPTO_cleanup_all_ex_data();
      ERR_free_strings();
      ERR_remove_thread_state(NULL);
      EVP_cleanup();
      CRYPTO_mem_leaks(bio_err);
      if (bio_err != NULL)
          BIO_free(bio_err);
      EXIT(ret);
      return ret;
  }
  
  int doit_biopair(SSL *s_ssl, SSL *c_ssl, long count,
                   clock_t *s_time, clock_t *c_time)
  {
      long cw_num = count, cr_num = count, sw_num = count, sr_num = count;
      BIO *s_ssl_bio = NULL, *c_ssl_bio = NULL;
      BIO *server = NULL, *server_io = NULL, *client = NULL, *client_io = NULL;
      int ret = 1;
  
      size_t bufsiz = 256;        /* small buffer for testing */
  
      if (!BIO_new_bio_pair(&server, bufsiz, &server_io, bufsiz))
          goto err;
      if (!BIO_new_bio_pair(&client, bufsiz, &client_io, bufsiz))
          goto err;
  
      s_ssl_bio = BIO_new(BIO_f_ssl());
      if (!s_ssl_bio)
          goto err;
  
      c_ssl_bio = BIO_new(BIO_f_ssl());
      if (!c_ssl_bio)
          goto err;
  
      SSL_set_connect_state(c_ssl);
      SSL_set_bio(c_ssl, client, client);
      (void)BIO_set_ssl(c_ssl_bio, c_ssl, BIO_NOCLOSE);
  
      SSL_set_accept_state(s_ssl);
      SSL_set_bio(s_ssl, server, server);
      (void)BIO_set_ssl(s_ssl_bio, s_ssl, BIO_NOCLOSE);
  
      do {
          /*-
           * c_ssl_bio:          SSL filter BIO
           *
           * client:             pseudo-I/O for SSL library
           *
           * client_io:          client's SSL communication; usually to be
           *                     relayed over some I/O facility, but in this
           *                     test program, we're the server, too:
           *
           * server_io:          server's SSL communication
           *
           * server:             pseudo-I/O for SSL library
           *
           * s_ssl_bio:          SSL filter BIO
           *
           * The client and the server each employ a "BIO pair":
           * client + client_io, server + server_io.
           * BIO pairs are symmetric.  A BIO pair behaves similar
           * to a non-blocking socketpair (but both endpoints must
           * be handled by the same thread).
           * [Here we could connect client and server to the ends
           * of a single BIO pair, but then this code would be less
           * suitable as an example for BIO pairs in general.]
           *
           * Useful functions for querying the state of BIO pair endpoints:
           *
           * BIO_ctrl_pending(bio)              number of bytes we can read now
           * BIO_ctrl_get_read_request(bio)     number of bytes needed to fulfil
           *                                      other side's read attempt
           * BIO_ctrl_get_write_guarantee(bio)   number of bytes we can write now
           *
           * ..._read_request is never more than ..._write_guarantee;
           * it depends on the application which one you should use.
           */
  
          /*
           * We have non-blocking behaviour throughout this test program, but
           * can be sure that there is *some* progress in each iteration; so we
           * don't have to worry about ..._SHOULD_READ or ..._SHOULD_WRITE --
           * we just try everything in each iteration
           */
  
          {
              /* CLIENT */
  
              MS_STATIC char cbuf[1024 * 8];
              int i, r;
              clock_t c_clock = clock();
  
              memset(cbuf, 0, sizeof(cbuf));
  
              if (debug)
                  if (SSL_in_init(c_ssl))
                      printf("client waiting in SSL_connect - %s\n",
                             SSL_state_string_long(c_ssl));
  
              if (cw_num > 0) {
                  /* Write to server. */
  
                  if (cw_num > (long)sizeof cbuf)
                      i = sizeof cbuf;
                  else
                      i = (int)cw_num;
                  r = BIO_write(c_ssl_bio, cbuf, i);
                  if (r < 0) {
                      if (!BIO_should_retry(c_ssl_bio)) {
                          fprintf(stderr, "ERROR in CLIENT\n");
                          goto err;
                      }
                      /*
                       * BIO_should_retry(...) can just be ignored here. The
                       * library expects us to call BIO_write with the same
                       * arguments again, and that's what we will do in the
                       * next iteration.
                       */
                  } else if (r == 0) {
                      fprintf(stderr, "SSL CLIENT STARTUP FAILED\n");
                      goto err;
                  } else {
                      if (debug)
                          printf("client wrote %d\n", r);
                      cw_num -= r;
                  }
              }
  
              if (cr_num > 0) {
                  /* Read from server. */
  
                  r = BIO_read(c_ssl_bio, cbuf, sizeof(cbuf));
                  if (r < 0) {
                      if (!BIO_should_retry(c_ssl_bio)) {
                          fprintf(stderr, "ERROR in CLIENT\n");
                          goto err;
                      }
                      /*
                       * Again, "BIO_should_retry" can be ignored.
                       */
                  } else if (r == 0) {
                      fprintf(stderr, "SSL CLIENT STARTUP FAILED\n");
                      goto err;
                  } else {
                      if (debug)
                          printf("client read %d\n", r);
                      cr_num -= r;
                  }
              }
  
              /*
               * c_time and s_time increments will typically be very small
               * (depending on machine speed and clock tick intervals), but
               * sampling over a large number of connections should result in
               * fairly accurate figures.  We cannot guarantee a lot, however
               * -- if each connection lasts for exactly one clock tick, it
               * will be counted only for the client or only for the server or
               * even not at all.
               */
              *c_time += (clock() - c_clock);
          }
  
          {
              /* SERVER */
  
              MS_STATIC char sbuf[1024 * 8];
              int i, r;
              clock_t s_clock = clock();
  
              memset(sbuf, 0, sizeof(sbuf));
  
              if (debug)
                  if (SSL_in_init(s_ssl))
                      printf("server waiting in SSL_accept - %s\n",
                             SSL_state_string_long(s_ssl));
  
              if (sw_num > 0) {
                  /* Write to client. */
  
                  if (sw_num > (long)sizeof sbuf)
                      i = sizeof sbuf;
                  else
                      i = (int)sw_num;
                  r = BIO_write(s_ssl_bio, sbuf, i);
                  if (r < 0) {
                      if (!BIO_should_retry(s_ssl_bio)) {
                          fprintf(stderr, "ERROR in SERVER\n");
                          goto err;
                      }
                      /* Ignore "BIO_should_retry". */
                  } else if (r == 0) {
                      fprintf(stderr, "SSL SERVER STARTUP FAILED\n");
                      goto err;
                  } else {
                      if (debug)
                          printf("server wrote %d\n", r);
                      sw_num -= r;
                  }
              }
  
              if (sr_num > 0) {
                  /* Read from client. */
  
                  r = BIO_read(s_ssl_bio, sbuf, sizeof(sbuf));
                  if (r < 0) {
                      if (!BIO_should_retry(s_ssl_bio)) {
                          fprintf(stderr, "ERROR in SERVER\n");
                          goto err;
                      }
                      /* blah, blah */
                  } else if (r == 0) {
                      fprintf(stderr, "SSL SERVER STARTUP FAILED\n");
                      goto err;
                  } else {
                      if (debug)
                          printf("server read %d\n", r);
                      sr_num -= r;
                  }
              }
  
              *s_time += (clock() - s_clock);
          }
  
          {
              /* "I/O" BETWEEN CLIENT AND SERVER. */
  
              size_t r1, r2;
              BIO *io1 = server_io, *io2 = client_io;
              /*
               * we use the non-copying interface for io1 and the standard
               * BIO_write/BIO_read interface for io2
               */
  
              static int prev_progress = 1;
              int progress = 0;
  
              /* io1 to io2 */
              do {
                  size_t num;
                  int r;
  
                  r1 = BIO_ctrl_pending(io1);
                  r2 = BIO_ctrl_get_write_guarantee(io2);
  
                  num = r1;
                  if (r2 < num)
                      num = r2;
                  if (num) {
                      char *dataptr;
  
                      if (INT_MAX < num) /* yeah, right */
                          num = INT_MAX;
  
                      r = BIO_nread(io1, &dataptr, (int)num);
                      assert(r > 0);
                      assert(r <= (int)num);
                      /*
                       * possibly r < num (non-contiguous data)
                       */
                      num = r;
                      r = BIO_write(io2, dataptr, (int)num);
                      if (r != (int)num) { /* can't happen */
                          fprintf(stderr, "ERROR: BIO_write could not write "
                                  "BIO_ctrl_get_write_guarantee() bytes");
                          goto err;
                      }
                      progress = 1;
  
                      if (debug)
                          printf((io1 == client_io) ?
                                 "C->S relaying: %d bytes\n" :
                                 "S->C relaying: %d bytes\n", (int)num);
                  }
              }
              while (r1 && r2);
  
              /* io2 to io1 */
              {
                  size_t num;
                  int r;
  
                  r1 = BIO_ctrl_pending(io2);
                  r2 = BIO_ctrl_get_read_request(io1);
                  /*
                   * here we could use ..._get_write_guarantee instead of
                   * ..._get_read_request, but by using the latter we test
                   * restartability of the SSL implementation more thoroughly
                   */
                  num = r1;
                  if (r2 < num)
                      num = r2;
                  if (num) {
                      char *dataptr;
  
                      if (INT_MAX < num)
                          num = INT_MAX;
  
                      if (num > 1)
                          --num;  /* test restartability even more thoroughly */
  
                      r = BIO_nwrite0(io1, &dataptr);
                      assert(r > 0);
                      if (r < (int)num)
                          num = r;
                      r = BIO_read(io2, dataptr, (int)num);
                      if (r != (int)num) { /* can't happen */
                          fprintf(stderr, "ERROR: BIO_read could not read "
                                  "BIO_ctrl_pending() bytes");
                          goto err;
                      }
                      progress = 1;
                      r = BIO_nwrite(io1, &dataptr, (int)num);
                      if (r != (int)num) { /* can't happen */
                          fprintf(stderr, "ERROR: BIO_nwrite() did not accept "
                                  "BIO_nwrite0() bytes");
                          goto err;
                      }
  
                      if (debug)
                          printf((io2 == client_io) ?
                                 "C->S relaying: %d bytes\n" :
                                 "S->C relaying: %d bytes\n", (int)num);
                  }
              }                   /* no loop, BIO_ctrl_get_read_request now
                                   * returns 0 anyway */
  
              if (!progress && !prev_progress)
                  if (cw_num > 0 || cr_num > 0 || sw_num > 0 || sr_num > 0) {
                      fprintf(stderr, "ERROR: got stuck\n");
                      if (strcmp("SSLv2", SSL_get_version(c_ssl)) == 0) {
                          fprintf(stderr, "This can happen for SSL2 because "
                                  "CLIENT-FINISHED and SERVER-VERIFY are written \n"
                                  "concurrently ...");
                          if (strncmp("2SCF", SSL_state_string(c_ssl), 4) == 0
                              && strncmp("2SSV", SSL_state_string(s_ssl),
                                         4) == 0) {
                              fprintf(stderr, " ok.\n");
                              goto end;
                          }
                      }
                      fprintf(stderr, " ERROR.\n");
                      goto err;
                  }
              prev_progress = progress;
          }
      }
      while (cw_num > 0 || cr_num > 0 || sw_num > 0 || sr_num > 0);
  
      if (verbose)
          print_details(c_ssl, "DONE via BIO pair: ");
  
      if (verify_serverinfo() < 0) {
          ret = 1;
          goto err;
      }
  
      if (custom_ext_error) {
          ret = 1;
          goto err;
      }
  
   end:
      ret = 0;
  
   err:
      ERR_print_errors(bio_err);
  
      if (server)
          BIO_free(server);
      if (server_io)
          BIO_free(server_io);
      if (client)
          BIO_free(client);
      if (client_io)
          BIO_free(client_io);
      if (s_ssl_bio)
          BIO_free(s_ssl_bio);
      if (c_ssl_bio)
          BIO_free(c_ssl_bio);
  
      return ret;
  }
  
  #define W_READ  1
  #define W_WRITE 2
  #define C_DONE  1
  #define S_DONE  2
  
  int doit(SSL *s_ssl, SSL *c_ssl, long count)
  {
      char *cbuf = NULL, *sbuf = NULL;
      long bufsiz;
      long cw_num = count, cr_num = count;
      long sw_num = count, sr_num = count;
      int ret = 1;
      BIO *c_to_s = NULL;
      BIO *s_to_c = NULL;
      BIO *c_bio = NULL;
      BIO *s_bio = NULL;
      int c_r, c_w, s_r, s_w;
      int i, j;
      int done = 0;
      int c_write, s_write;
      int do_server = 0, do_client = 0;
      int max_frag = 5 * 1024;
  
      bufsiz = count > 40 * 1024 ? 40 * 1024 : count;
  
      if ((cbuf = OPENSSL_malloc(bufsiz)) == NULL)
          goto err;
      if ((sbuf = OPENSSL_malloc(bufsiz)) == NULL)
          goto err;
  
      memset(cbuf, 0, bufsiz);
      memset(sbuf, 0, bufsiz);
  
      c_to_s = BIO_new(BIO_s_mem());
      s_to_c = BIO_new(BIO_s_mem());
      if ((s_to_c == NULL) || (c_to_s == NULL)) {
          ERR_print_errors(bio_err);
          goto err;
      }
  
      c_bio = BIO_new(BIO_f_ssl());
      s_bio = BIO_new(BIO_f_ssl());
      if ((c_bio == NULL) || (s_bio == NULL)) {
          ERR_print_errors(bio_err);
          goto err;
      }
  
      SSL_set_connect_state(c_ssl);
      SSL_set_bio(c_ssl, s_to_c, c_to_s);
      SSL_set_max_send_fragment(c_ssl, max_frag);
      BIO_set_ssl(c_bio, c_ssl, BIO_NOCLOSE);
  
      SSL_set_accept_state(s_ssl);
      SSL_set_bio(s_ssl, c_to_s, s_to_c);
      SSL_set_max_send_fragment(s_ssl, max_frag);
      BIO_set_ssl(s_bio, s_ssl, BIO_NOCLOSE);
  
      c_r = 0;
      s_r = 1;
      c_w = 1;
      s_w = 0;
      c_write = 1, s_write = 0;
  
      /* We can always do writes */
      for (;;) {
          do_server = 0;
          do_client = 0;
  
          i = (int)BIO_pending(s_bio);
          if ((i && s_r) || s_w)
              do_server = 1;
  
          i = (int)BIO_pending(c_bio);
          if ((i && c_r) || c_w)
              do_client = 1;
  
          if (do_server && debug) {
              if (SSL_in_init(s_ssl))
                  printf("server waiting in SSL_accept - %s\n",
                         SSL_state_string_long(s_ssl));
  /*-
              else if (s_write)
                  printf("server:SSL_write()\n");
              else
                  printf("server:SSL_read()\n"); */
          }
  
          if (do_client && debug) {
              if (SSL_in_init(c_ssl))
                  printf("client waiting in SSL_connect - %s\n",
                         SSL_state_string_long(c_ssl));
  /*-
              else if (c_write)
                  printf("client:SSL_write()\n");
              else
                  printf("client:SSL_read()\n"); */
          }
  
          if (!do_client && !do_server) {
              fprintf(stdout, "ERROR IN STARTUP\n");
              ERR_print_errors(bio_err);
              goto err;
          }
          if (do_client && !(done & C_DONE)) {
              if (c_write) {
                  j = (cw_num > bufsiz) ? (int)bufsiz : (int)cw_num;
                  i = BIO_write(c_bio, cbuf, j);
                  if (i < 0) {
                      c_r = 0;
                      c_w = 0;
                      if (BIO_should_retry(c_bio)) {
                          if (BIO_should_read(c_bio))
                              c_r = 1;
                          if (BIO_should_write(c_bio))
                              c_w = 1;
                      } else {
                          fprintf(stderr, "ERROR in CLIENT\n");
                          ERR_print_errors(bio_err);
                          goto err;
                      }
                  } else if (i == 0) {
                      fprintf(stderr, "SSL CLIENT STARTUP FAILED\n");
                      goto err;
                  } else {
                      if (debug)
                          printf("client wrote %d\n", i);
                      /* ok */
                      s_r = 1;
                      c_write = 0;
                      cw_num -= i;
                      if (max_frag > 1029)
                          SSL_set_max_send_fragment(c_ssl, max_frag -= 5);
                  }
              } else {
                  i = BIO_read(c_bio, cbuf, bufsiz);
                  if (i < 0) {
                      c_r = 0;
                      c_w = 0;
                      if (BIO_should_retry(c_bio)) {
                          if (BIO_should_read(c_bio))
                              c_r = 1;
                          if (BIO_should_write(c_bio))
                              c_w = 1;
                      } else {
                          fprintf(stderr, "ERROR in CLIENT\n");
                          ERR_print_errors(bio_err);
                          goto err;
                      }
                  } else if (i == 0) {
                      fprintf(stderr, "SSL CLIENT STARTUP FAILED\n");
                      goto err;
                  } else {
                      if (debug)
                          printf("client read %d\n", i);
                      cr_num -= i;
                      if (sw_num > 0) {
                          s_write = 1;
                          s_w = 1;
                      }
                      if (cr_num <= 0) {
                          s_write = 1;
                          s_w = 1;
                          done = S_DONE | C_DONE;
                      }
                  }
              }
          }
  
          if (do_server && !(done & S_DONE)) {
              if (!s_write) {
                  i = BIO_read(s_bio, sbuf, bufsiz);
                  if (i < 0) {
                      s_r = 0;
                      s_w = 0;
                      if (BIO_should_retry(s_bio)) {
                          if (BIO_should_read(s_bio))
                              s_r = 1;
                          if (BIO_should_write(s_bio))
                              s_w = 1;
                      } else {
                          fprintf(stderr, "ERROR in SERVER\n");
                          ERR_print_errors(bio_err);
                          goto err;
                      }
                  } else if (i == 0) {
                      ERR_print_errors(bio_err);
                      fprintf(stderr,
                              "SSL SERVER STARTUP FAILED in SSL_read\n");
                      goto err;
                  } else {
                      if (debug)
                          printf("server read %d\n", i);
                      sr_num -= i;
                      if (cw_num > 0) {
                          c_write = 1;
                          c_w = 1;
                      }
                      if (sr_num <= 0) {
                          s_write = 1;
                          s_w = 1;
                          c_write = 0;
                      }
                  }
              } else {
                  j = (sw_num > bufsiz) ? (int)bufsiz : (int)sw_num;
                  i = BIO_write(s_bio, sbuf, j);
                  if (i < 0) {
                      s_r = 0;
                      s_w = 0;
                      if (BIO_should_retry(s_bio)) {
                          if (BIO_should_read(s_bio))
                              s_r = 1;
                          if (BIO_should_write(s_bio))
                              s_w = 1;
                      } else {
                          fprintf(stderr, "ERROR in SERVER\n");
                          ERR_print_errors(bio_err);
                          goto err;
                      }
                  } else if (i == 0) {
                      ERR_print_errors(bio_err);
                      fprintf(stderr,
                              "SSL SERVER STARTUP FAILED in SSL_write\n");
                      goto err;
                  } else {
                      if (debug)
                          printf("server wrote %d\n", i);
                      sw_num -= i;
                      s_write = 0;
                      c_r = 1;
                      if (sw_num <= 0)
                          done |= S_DONE;
                      if (max_frag > 1029)
                          SSL_set_max_send_fragment(s_ssl, max_frag -= 5);
                  }
              }
          }
  
          if ((done & S_DONE) && (done & C_DONE))
              break;
      }
  
      if (verbose)
          print_details(c_ssl, "DONE: ");
      if (verify_serverinfo() < 0) {
          ret = 1;
          goto err;
      }
      if (custom_ext_error) {
          ret = 1;
          goto err;
      }
      ret = 0;
   err:
      /*
       * We have to set the BIO's to NULL otherwise they will be
       * OPENSSL_free()ed twice.  Once when th s_ssl is SSL_free()ed and again
       * when c_ssl is SSL_free()ed. This is a hack required because s_ssl and
       * c_ssl are sharing the same BIO structure and SSL_set_bio() and
       * SSL_free() automatically BIO_free non NULL entries. You should not
       * normally do this or be required to do this
       */
      if (s_ssl != NULL) {
          s_ssl->rbio = NULL;
          s_ssl->wbio = NULL;
      }
      if (c_ssl != NULL) {
          c_ssl->rbio = NULL;
          c_ssl->wbio = NULL;
      }
  
      if (c_to_s != NULL)
          BIO_free(c_to_s);
      if (s_to_c != NULL)
          BIO_free(s_to_c);
      if (c_bio != NULL)
          BIO_free_all(c_bio);
      if (s_bio != NULL)
          BIO_free_all(s_bio);
  
      if (cbuf)
          OPENSSL_free(cbuf);
      if (sbuf)
          OPENSSL_free(sbuf);
  
      return (ret);
  }
  
  static int get_proxy_auth_ex_data_idx(void)
  {
      static volatile int idx = -1;
      if (idx < 0) {
          CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
          if (idx < 0) {
              idx = X509_STORE_CTX_get_ex_new_index(0,
                                                    "SSLtest for verify callback",
                                                    NULL, NULL, NULL);
          }
          CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
      }
      return idx;
  }
  
  static int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
  {
      char *s, buf[256];
  
      s = X509_NAME_oneline(X509_get_subject_name(ctx->current_cert), buf,
                            sizeof buf);
      if (s != NULL) {
          if (ok)
              fprintf(stderr, "depth=%d %s\n", ctx->error_depth, buf);
          else {
              fprintf(stderr, "depth=%d error=%d %s\n",
                      ctx->error_depth, ctx->error, buf);
          }
      }
  
      if (ok == 0) {
          fprintf(stderr, "Error string: %s\n",
                  X509_verify_cert_error_string(ctx->error));
          switch (ctx->error) {
          case X509_V_ERR_CERT_NOT_YET_VALID:
          case X509_V_ERR_CERT_HAS_EXPIRED:
          case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
              fprintf(stderr, "  ... ignored.\n");
              ok = 1;
          }
      }
  
      if (ok == 1) {
          X509 *xs = ctx->current_cert;
  #if 0
          X509 *xi = ctx->current_issuer;
  #endif
  
          if (xs->ex_flags & EXFLAG_PROXY) {
              unsigned int *letters = X509_STORE_CTX_get_ex_data(ctx,
                                                                 get_proxy_auth_ex_data_idx
                                                                 ());
  
              if (letters) {
                  int found_any = 0;
                  int i;
                  PROXY_CERT_INFO_EXTENSION *pci =
                      X509_get_ext_d2i(xs, NID_proxyCertInfo,
                                       NULL, NULL);
  
                  switch (OBJ_obj2nid(pci->proxyPolicy->policyLanguage)) {
                  case NID_Independent:
                      /*
                       * Completely meaningless in this program, as there's no
                       * way to grant explicit rights to a specific PrC.
                       * Basically, using id-ppl-Independent is the perfect way
                       * to grant no rights at all.
                       */
                      fprintf(stderr, "  Independent proxy certificate");
                      for (i = 0; i < 26; i++)
                          letters[i] = 0;
                      break;
                  case NID_id_ppl_inheritAll:
                      /*
                       * This is basically a NOP, we simply let the current
                       * rights stand as they are.
                       */
                      fprintf(stderr, "  Proxy certificate inherits all");
                      break;
                  default:
                      s = (char *)
                          pci->proxyPolicy->policy->data;
                      i = pci->proxyPolicy->policy->length;
  
                      /*
                       * The algorithm works as follows: it is assumed that
                       * previous iterations or the initial granted rights has
                       * already set some elements of `letters'.  What we need
                       * to do is to clear those that weren't granted by the
                       * current PrC as well.  The easiest way to do this is to
                       * add 1 to all the elements whose letters are given with
                       * the current policy. That way, all elements that are
                       * set by the current policy and were already set by
                       * earlier policies and through the original grant of
                       * rights will get the value 2 or higher. The last thing
                       * to do is to sweep through `letters' and keep the
                       * elements having the value 2 as set, and clear all the
                       * others.
                       */
  
                      fprintf(stderr, "  Certificate proxy rights = %*.*s", i,
                              i, s);
                      while (i-- > 0) {
                          int c = *s++;
                          if (isascii(c) && isalpha(c)) {
                              if (islower(c))
                                  c = toupper(c);
                              letters[c - 'A']++;
                          }
                      }
                      for (i = 0; i < 26; i++)
                          if (letters[i] < 2)
                              letters[i] = 0;
                          else
                              letters[i] = 1;
                  }
  
                  found_any = 0;
                  fprintf(stderr, ", resulting proxy rights = ");
                  for (i = 0; i < 26; i++)
                      if (letters[i]) {
                          fprintf(stderr, "%c", i + 'A');
                          found_any = 1;
                      }
                  if (!found_any)
                      fprintf(stderr, "none");
                  fprintf(stderr, "\n");
  
                  PROXY_CERT_INFO_EXTENSION_free(pci);
              }
          }
      }
  
      return (ok);
  }
  
  static void process_proxy_debug(int indent, const char *format, ...)
  {
      /* That's 80 > */
      static const char indentation[] =
          ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
          ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>";
      char my_format[256];
      va_list args;
  
      BIO_snprintf(my_format, sizeof(my_format), "%*.*s %s",
                   indent, indent, indentation, format);
  
      va_start(args, format);
      vfprintf(stderr, my_format, args);
      va_end(args);
  }
  
  /*-
   * Priority levels:
   *  0   [!]var, ()
   *  1   & ^
   *  2   |
   */
  static int process_proxy_cond_adders(unsigned int letters[26],
                                       const char *cond, const char **cond_end,
                                       int *pos, int indent);
  static int process_proxy_cond_val(unsigned int letters[26], const char *cond,
                                    const char **cond_end, int *pos, int indent)
  {
      int c;
      int ok = 1;
      int negate = 0;
  
      while (isspace((int)*cond)) {
          cond++;
          (*pos)++;
      }
      c = *cond;
  
      if (debug)
          process_proxy_debug(indent,
                              "Start process_proxy_cond_val at position %d: %s\n",
                              *pos, cond);
  
      while (c == '!') {
          negate = !negate;
          cond++;
          (*pos)++;
          while (isspace((int)*cond)) {
              cond++;
              (*pos)++;
          }
          c = *cond;
      }
  
      if (c == '(') {
          cond++;
          (*pos)++;
          ok = process_proxy_cond_adders(letters, cond, cond_end, pos,
                                         indent + 1);
          cond = *cond_end;
          if (ok < 0)
              goto end;
          while (isspace((int)*cond)) {
              cond++;
              (*pos)++;
          }
          c = *cond;
          if (c != ')') {
              fprintf(stderr,
                      "Weird condition character in position %d: "
                      "%c\n", *pos, c);
              ok = -1;
              goto end;
          }
          cond++;
          (*pos)++;
      } else if (isascii(c) && isalpha(c)) {
          if (islower(c))
              c = toupper(c);
          ok = letters[c - 'A'];
          cond++;
          (*pos)++;
      } else {
          fprintf(stderr,
                  "Weird condition character in position %d: " "%c\n", *pos, c);
          ok = -1;
          goto end;
      }
   end:
      *cond_end = cond;
      if (ok >= 0 && negate)
          ok = !ok;
  
      if (debug)
          process_proxy_debug(indent,
                              "End process_proxy_cond_val at position %d: %s, returning %d\n",
                              *pos, cond, ok);
  
      return ok;
  }
  
  static int process_proxy_cond_multipliers(unsigned int letters[26],
                                            const char *cond,
                                            const char **cond_end, int *pos,
                                            int indent)
  {
      int ok;
      char c;
  
      if (debug)
          process_proxy_debug(indent,
                              "Start process_proxy_cond_multipliers at position %d: %s\n",
                              *pos, cond);
  
      ok = process_proxy_cond_val(letters, cond, cond_end, pos, indent + 1);
      cond = *cond_end;
      if (ok < 0)
          goto end;
  
      while (ok >= 0) {
          while (isspace((int)*cond)) {
              cond++;
              (*pos)++;
          }
          c = *cond;
  
          switch (c) {
          case '&':
          case '^':
              {
                  int save_ok = ok;
  
                  cond++;
                  (*pos)++;
                  ok = process_proxy_cond_val(letters,
                                              cond, cond_end, pos, indent + 1);
                  cond = *cond_end;
                  if (ok < 0)
                      break;
  
                  switch (c) {
                  case '&':
                      ok &= save_ok;
                      break;
                  case '^':
                      ok ^= save_ok;
                      break;
                  default:
                      fprintf(stderr, "SOMETHING IS SERIOUSLY WRONG!"
                              " STOPPING\n");
                      EXIT(1);
                  }
              }
              break;
          default:
              goto end;
          }
      }
   end:
      if (debug)
          process_proxy_debug(indent,
                              "End process_proxy_cond_multipliers at position %d: %s, returning %d\n",
                              *pos, cond, ok);
  
      *cond_end = cond;
      return ok;
  }
  
  static int process_proxy_cond_adders(unsigned int letters[26],
                                       const char *cond, const char **cond_end,
                                       int *pos, int indent)
  {
      int ok;
      char c;
  
      if (debug)
          process_proxy_debug(indent,
                              "Start process_proxy_cond_adders at position %d: %s\n",
                              *pos, cond);
  
      ok = process_proxy_cond_multipliers(letters, cond, cond_end, pos,
                                          indent + 1);
      cond = *cond_end;
      if (ok < 0)
          goto end;
  
      while (ok >= 0) {
          while (isspace((int)*cond)) {
              cond++;
              (*pos)++;
          }
          c = *cond;
  
          switch (c) {
          case '|':
              {
                  int save_ok = ok;
  
                  cond++;
                  (*pos)++;
                  ok = process_proxy_cond_multipliers(letters,
                                                      cond, cond_end, pos,
                                                      indent + 1);
                  cond = *cond_end;
                  if (ok < 0)
                      break;
  
                  switch (c) {
                  case '|':
                      ok |= save_ok;
                      break;
                  default:
                      fprintf(stderr, "SOMETHING IS SERIOUSLY WRONG!"
                              " STOPPING\n");
                      EXIT(1);
                  }
              }
              break;
          default:
              goto end;
          }
      }
   end:
      if (debug)
          process_proxy_debug(indent,
                              "End process_proxy_cond_adders at position %d: %s, returning %d\n",
                              *pos, cond, ok);
  
      *cond_end = cond;
      return ok;
  }
  
  static int process_proxy_cond(unsigned int letters[26],
                                const char *cond, const char **cond_end)
  {
      int pos = 1;
      return process_proxy_cond_adders(letters, cond, cond_end, &pos, 1);
  }
  
  static int MS_CALLBACK app_verify_callback(X509_STORE_CTX *ctx, void *arg)
  {
      int ok = 1;
      struct app_verify_arg *cb_arg = arg;
      unsigned int letters[26];   /* only used with proxy_auth */
  
      if (cb_arg->app_verify) {
          char *s = NULL, buf[256];
  
          fprintf(stderr, "In app_verify_callback, allowing cert. ");
          fprintf(stderr, "Arg is: %s\n", cb_arg->string);
          fprintf(stderr,
                  "Finished printing do we have a context? 0x%p a cert? 0x%p\n",
                  (void *)ctx, (void *)ctx->cert);
          if (ctx->cert)
              s = X509_NAME_oneline(X509_get_subject_name(ctx->cert), buf, 256);
          if (s != NULL) {
              fprintf(stderr, "cert depth=%d %s\n", ctx->error_depth, buf);
          }
          return (1);
      }
      if (cb_arg->proxy_auth) {
          int found_any = 0, i;
          char *sp;
  
          for (i = 0; i < 26; i++)
              letters[i] = 0;
          for (sp = cb_arg->proxy_auth; *sp; sp++) {
              int c = *sp;
              if (isascii(c) && isalpha(c)) {
                  if (islower(c))
                      c = toupper(c);
                  letters[c - 'A'] = 1;
              }
          }
  
          fprintf(stderr, "  Initial proxy rights = ");
          for (i = 0; i < 26; i++)
              if (letters[i]) {
                  fprintf(stderr, "%c", i + 'A');
                  found_any = 1;
              }
          if (!found_any)
              fprintf(stderr, "none");
          fprintf(stderr, "\n");
  
          X509_STORE_CTX_set_ex_data(ctx,
                                     get_proxy_auth_ex_data_idx(), letters);
      }
      if (cb_arg->allow_proxy_certs) {
          X509_STORE_CTX_set_flags(ctx, X509_V_FLAG_ALLOW_PROXY_CERTS);
      }
  #ifndef OPENSSL_NO_X509_VERIFY
      ok = X509_verify_cert(ctx);
  #endif
  
      if (cb_arg->proxy_auth) {
          if (ok > 0) {
              const char *cond_end = NULL;
  
              ok = process_proxy_cond(letters, cb_arg->proxy_cond, &cond_end);
  
              if (ok < 0)
                  EXIT(3);
              if (*cond_end) {
                  fprintf(stderr,
                          "Stopped processing condition before it's end.\n");
                  ok = 0;
              }
              if (!ok)
                  fprintf(stderr,
                          "Proxy rights check with condition '%s' proved invalid\n",
                          cb_arg->proxy_cond);
              else
                  fprintf(stderr,
                          "Proxy rights check with condition '%s' proved valid\n",
                          cb_arg->proxy_cond);
          }
      }
      return (ok);
  }
  
  #ifndef OPENSSL_NO_RSA
  static RSA *rsa_tmp = NULL;
  
  static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
  {
      BIGNUM *bn = NULL;
      if (rsa_tmp == NULL) {
          bn = BN_new();
          rsa_tmp = RSA_new();
          if (!bn || !rsa_tmp || !BN_set_word(bn, RSA_F4)) {
              BIO_printf(bio_err, "Memory error...");
              goto end;
          }
          BIO_printf(bio_err, "Generating temp (%d bit) RSA key...", keylength);
          (void)BIO_flush(bio_err);
          if (!RSA_generate_key_ex(rsa_tmp, keylength, bn, NULL)) {
              BIO_printf(bio_err, "Error generating key.");
              RSA_free(rsa_tmp);
              rsa_tmp = NULL;
          }
   end:
          BIO_printf(bio_err, "\n");
          (void)BIO_flush(bio_err);
      }
      if (bn)
          BN_free(bn);
      return (rsa_tmp);
  }
  
  static void free_tmp_rsa(void)
  {
      if (rsa_tmp != NULL) {
          RSA_free(rsa_tmp);
          rsa_tmp = NULL;
      }
  }
  #endif
  
  #ifndef OPENSSL_NO_DH
  /*-
   * These DH parameters have been generated as follows:
   *    $ openssl dhparam -C -noout 512
   *    $ openssl dhparam -C -noout 1024
   *    $ openssl dhparam -C -noout -dsaparam 1024
   * (The third function has been renamed to avoid name conflicts.)
   */
  static DH *get_dh512()
  {
      static unsigned char dh512_p[] = {
          0xCB, 0xC8, 0xE1, 0x86, 0xD0, 0x1F, 0x94, 0x17, 0xA6, 0x99, 0xF0,
          0xC6,
          0x1F, 0x0D, 0xAC, 0xB6, 0x25, 0x3E, 0x06, 0x39, 0xCA, 0x72, 0x04,
          0xB0,
          0x6E, 0xDA, 0xC0, 0x61, 0xE6, 0x7A, 0x77, 0x25, 0xE8, 0x3B, 0xB9,
          0x5F,
          0x9A, 0xB6, 0xB5, 0xFE, 0x99, 0x0B, 0xA1, 0x93, 0x4E, 0x35, 0x33,
          0xB8,
          0xE1, 0xF1, 0x13, 0x4F, 0x59, 0x1A, 0xD2, 0x57, 0xC0, 0x26, 0x21,
          0x33,
          0x02, 0xC5, 0xAE, 0x23,
      };
      static unsigned char dh512_g[] = {
          0x02,
      };
      DH *dh;
  
      if ((dh = DH_new()) == NULL)
          return (NULL);
      dh->p = BN_bin2bn(dh512_p, sizeof(dh512_p), NULL);
      dh->g = BN_bin2bn(dh512_g, sizeof(dh512_g), NULL);
      if ((dh->p == NULL) || (dh->g == NULL)) {
          DH_free(dh);
          return (NULL);
      }
      return (dh);
  }
  
  static DH *get_dh1024()
  {
      static unsigned char dh1024_p[] = {
          0xF8, 0x81, 0x89, 0x7D, 0x14, 0x24, 0xC5, 0xD1, 0xE6, 0xF7, 0xBF,
          0x3A,
          0xE4, 0x90, 0xF4, 0xFC, 0x73, 0xFB, 0x34, 0xB5, 0xFA, 0x4C, 0x56,
          0xA2,
          0xEA, 0xA7, 0xE9, 0xC0, 0xC0, 0xCE, 0x89, 0xE1, 0xFA, 0x63, 0x3F,
          0xB0,
          0x6B, 0x32, 0x66, 0xF1, 0xD1, 0x7B, 0xB0, 0x00, 0x8F, 0xCA, 0x87,
          0xC2,
          0xAE, 0x98, 0x89, 0x26, 0x17, 0xC2, 0x05, 0xD2, 0xEC, 0x08, 0xD0,
          0x8C,
          0xFF, 0x17, 0x52, 0x8C, 0xC5, 0x07, 0x93, 0x03, 0xB1, 0xF6, 0x2F,
          0xB8,
          0x1C, 0x52, 0x47, 0x27, 0x1B, 0xDB, 0xD1, 0x8D, 0x9D, 0x69, 0x1D,
          0x52,
          0x4B, 0x32, 0x81, 0xAA, 0x7F, 0x00, 0xC8, 0xDC, 0xE6, 0xD9, 0xCC,
          0xC1,
          0x11, 0x2D, 0x37, 0x34, 0x6C, 0xEA, 0x02, 0x97, 0x4B, 0x0E, 0xBB,
          0xB1,
          0x71, 0x33, 0x09, 0x15, 0xFD, 0xDD, 0x23, 0x87, 0x07, 0x5E, 0x89,
          0xAB,
          0x6B, 0x7C, 0x5F, 0xEC, 0xA6, 0x24, 0xDC, 0x53,
      };
      static unsigned char dh1024_g[] = {
          0x02,
      };
      DH *dh;
  
      if ((dh = DH_new()) == NULL)
          return (NULL);
      dh->p = BN_bin2bn(dh1024_p, sizeof(dh1024_p), NULL);
      dh->g = BN_bin2bn(dh1024_g, sizeof(dh1024_g), NULL);
      if ((dh->p == NULL) || (dh->g == NULL)) {
          DH_free(dh);
          return (NULL);
      }
      return (dh);
  }
  
  static DH *get_dh1024dsa()
  {
      static unsigned char dh1024_p[] = {
          0xC8, 0x00, 0xF7, 0x08, 0x07, 0x89, 0x4D, 0x90, 0x53, 0xF3, 0xD5,
          0x00,
          0x21, 0x1B, 0xF7, 0x31, 0xA6, 0xA2, 0xDA, 0x23, 0x9A, 0xC7, 0x87,
          0x19,
          0x3B, 0x47, 0xB6, 0x8C, 0x04, 0x6F, 0xFF, 0xC6, 0x9B, 0xB8, 0x65,
          0xD2,
          0xC2, 0x5F, 0x31, 0x83, 0x4A, 0xA7, 0x5F, 0x2F, 0x88, 0x38, 0xB6,
          0x55,
          0xCF, 0xD9, 0x87, 0x6D, 0x6F, 0x9F, 0xDA, 0xAC, 0xA6, 0x48, 0xAF,
          0xFC,
          0x33, 0x84, 0x37, 0x5B, 0x82, 0x4A, 0x31, 0x5D, 0xE7, 0xBD, 0x52,
          0x97,
          0xA1, 0x77, 0xBF, 0x10, 0x9E, 0x37, 0xEA, 0x64, 0xFA, 0xCA, 0x28,
          0x8D,
          0x9D, 0x3B, 0xD2, 0x6E, 0x09, 0x5C, 0x68, 0xC7, 0x45, 0x90, 0xFD,
          0xBB,
          0x70, 0xC9, 0x3A, 0xBB, 0xDF, 0xD4, 0x21, 0x0F, 0xC4, 0x6A, 0x3C,
          0xF6,
          0x61, 0xCF, 0x3F, 0xD6, 0x13, 0xF1, 0x5F, 0xBC, 0xCF, 0xBC, 0x26,
          0x9E,
          0xBC, 0x0B, 0xBD, 0xAB, 0x5D, 0xC9, 0x54, 0x39,
      };
      static unsigned char dh1024_g[] = {
          0x3B, 0x40, 0x86, 0xE7, 0xF3, 0x6C, 0xDE, 0x67, 0x1C, 0xCC, 0x80,
          0x05,
          0x5A, 0xDF, 0xFE, 0xBD, 0x20, 0x27, 0x74, 0x6C, 0x24, 0xC9, 0x03,
          0xF3,
          0xE1, 0x8D, 0xC3, 0x7D, 0x98, 0x27, 0x40, 0x08, 0xB8, 0x8C, 0x6A,
          0xE9,
          0xBB, 0x1A, 0x3A, 0xD6, 0x86, 0x83, 0x5E, 0x72, 0x41, 0xCE, 0x85,
          0x3C,
          0xD2, 0xB3, 0xFC, 0x13, 0xCE, 0x37, 0x81, 0x9E, 0x4C, 0x1C, 0x7B,
          0x65,
          0xD3, 0xE6, 0xA6, 0x00, 0xF5, 0x5A, 0x95, 0x43, 0x5E, 0x81, 0xCF,
          0x60,
          0xA2, 0x23, 0xFC, 0x36, 0xA7, 0x5D, 0x7A, 0x4C, 0x06, 0x91, 0x6E,
          0xF6,
          0x57, 0xEE, 0x36, 0xCB, 0x06, 0xEA, 0xF5, 0x3D, 0x95, 0x49, 0xCB,
          0xA7,
          0xDD, 0x81, 0xDF, 0x80, 0x09, 0x4A, 0x97, 0x4D, 0xA8, 0x22, 0x72,
          0xA1,
          0x7F, 0xC4, 0x70, 0x56, 0x70, 0xE8, 0x20, 0x10, 0x18, 0x8F, 0x2E,
          0x60,
          0x07, 0xE7, 0x68, 0x1A, 0x82, 0x5D, 0x32, 0xA2,
      };
      DH *dh;
  
      if ((dh = DH_new()) == NULL)
          return (NULL);
      dh->p = BN_bin2bn(dh1024_p, sizeof(dh1024_p), NULL);
      dh->g = BN_bin2bn(dh1024_g, sizeof(dh1024_g), NULL);
      if ((dh->p == NULL) || (dh->g == NULL)) {
          DH_free(dh);
          return (NULL);
      }
      dh->length = 160;
      return (dh);
  }
  #endif
  
  #ifndef OPENSSL_NO_PSK
  /* convert the PSK key (psk_key) in ascii to binary (psk) */
  static int psk_key2bn(const char *pskkey, unsigned char *psk,
                        unsigned int max_psk_len)
  {
      int ret;
      BIGNUM *bn = NULL;
  
      ret = BN_hex2bn(&bn, pskkey);
      if (!ret) {
          BIO_printf(bio_err, "Could not convert PSK key '%s' to BIGNUM\n",
                     pskkey);
          if (bn)
              BN_free(bn);
          return 0;
      }
      if (BN_num_bytes(bn) > (int)max_psk_len) {
          BIO_printf(bio_err,
                     "psk buffer of callback is too small (%d) for key (%d)\n",
                     max_psk_len, BN_num_bytes(bn));
          BN_free(bn);
          return 0;
      }
      ret = BN_bn2bin(bn, psk);
      BN_free(bn);
      return ret;
  }
  
  static unsigned int psk_client_callback(SSL *ssl, const char *hint,
                                          char *identity,
                                          unsigned int max_identity_len,
                                          unsigned char *psk,
                                          unsigned int max_psk_len)
  {
      int ret;
      unsigned int psk_len = 0;
  
      ret = BIO_snprintf(identity, max_identity_len, "Client_identity");
      if (ret < 0)
          goto out_err;
      if (debug)
          fprintf(stderr, "client: created identity '%s' len=%d\n", identity,
                  ret);
      ret = psk_key2bn(psk_key, psk, max_psk_len);
      if (ret < 0)
          goto out_err;
      psk_len = ret;
   out_err:
      return psk_len;
  }
  
  static unsigned int psk_server_callback(SSL *ssl, const char *identity,
                                          unsigned char *psk,
                                          unsigned int max_psk_len)
  {
      unsigned int psk_len = 0;
  
      if (strcmp(identity, "Client_identity") != 0) {
          BIO_printf(bio_err, "server: PSK error: client identity not found\n");
          return 0;
      }
      psk_len = psk_key2bn(psk_key, psk, max_psk_len);
      return psk_len;
  }
  #endif
  
  static int do_test_cipherlist(void)
  {
  #if !defined(OPENSSL_NO_SSL2) || !defined(OPENSSL_NO_SSL3) || \
      !defined(OPENSSL_NO_TLS1)
      int i = 0;
      const SSL_METHOD *meth;
      const SSL_CIPHER *ci, *tci = NULL;
  #endif
  
  #ifndef OPENSSL_NO_SSL2
      fprintf(stderr, "testing SSLv2 cipher list order: ");
      meth = SSLv2_method();
      while ((ci = meth->get_cipher(i++)) != NULL) {
          if (tci != NULL)
              if (ci->id >= tci->id) {
                  fprintf(stderr, "failed %lx vs. %lx\n", ci->id, tci->id);
                  return 0;
              }
          tci = ci;
      }
      fprintf(stderr, "ok\n");
  #endif
  #ifndef OPENSSL_NO_SSL3
      fprintf(stderr, "testing SSLv3 cipher list order: ");
      meth = SSLv3_method();
      tci = NULL;
      while ((ci = meth->get_cipher(i++)) != NULL) {
          if (tci != NULL)
              if (ci->id >= tci->id) {
                  fprintf(stderr, "failed %lx vs. %lx\n", ci->id, tci->id);
                  return 0;
              }
          tci = ci;
      }
      fprintf(stderr, "ok\n");
  #endif
  #ifndef OPENSSL_NO_TLS1
      fprintf(stderr, "testing TLSv1 cipher list order: ");
      meth = TLSv1_method();
      tci = NULL;
      while ((ci = meth->get_cipher(i++)) != NULL) {
          if (tci != NULL)
              if (ci->id >= tci->id) {
                  fprintf(stderr, "failed %lx vs. %lx\n", ci->id, tci->id);
                  return 0;
              }
          tci = ci;
      }
      fprintf(stderr, "ok\n");
  #endif
  
      return 1;
  }
  