text: /* apps/s_server.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) 1998-2006 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.
   */
  
  /* Until the key-gen callbacks are modified to use newer prototypes, we allow
   * deprecated functions for openssl-internal code */
  #ifdef OPENSSL_NO_DEPRECATED
  #undef OPENSSL_NO_DEPRECATED
  #endif
  
  #include <assert.h>
  #include <ctype.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  
  #include <openssl/e_os2.h>
  #ifdef OPENSSL_NO_STDIO
  #define APPS_WIN16
  #endif
  
  #if !defined(OPENSSL_SYS_NETWARE)  /* conflicts with winsock2 stuff on netware */
  #include <sys/types.h>
  #endif
  
  /* With IPv6, it looks like Digital has mixed up the proper order of
     recursive header file inclusion, resulting in the compiler complaining
     that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
     is needed to have fileno() declared correctly...  So let's define u_int */
  #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
  #define __U_INT
  typedef unsigned int u_int;
  #endif
  
  #include <openssl/lhash.h>
  #include <openssl/bn.h>
  #define USE_SOCKETS
  #include "apps.h"
  #include <openssl/err.h>
  #include <openssl/pem.h>
  #include <openssl/x509.h>
  #include <openssl/ssl.h>
  #include <openssl/rand.h>
  #include <openssl/ocsp.h>
  #ifndef OPENSSL_NO_DH
  #include <openssl/dh.h>
  #endif
  #ifndef OPENSSL_NO_RSA
  #include <openssl/rsa.h>
  #endif
  #ifndef OPENSSL_NO_SRP
  #include <openssl/srp.h>
  #endif
  #include "s_apps.h"
  #include "timeouts.h"
  
  #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
  /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
  #undef FIONBIO
  #endif
  
  #if defined(OPENSSL_SYS_BEOS_R5)
  #include <fcntl.h>
  #endif
  
  #ifndef OPENSSL_NO_RSA
  static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);
  #endif
  static int not_resumable_sess_cb(SSL *s, int is_forward_secure);
  static int sv_body(char *hostname, int s, unsigned char *context);
  static int www_body(char *hostname, int s, unsigned char *context);
  static void close_accept_socket(void );
  static void sv_usage(void);
  static int init_ssl_connection(SSL *s);
  static void print_stats(BIO *bp,SSL_CTX *ctx);
  static int generate_session_id(const SSL *ssl, unsigned char *id,
  				unsigned int *id_len);
  static void init_session_cache_ctx(SSL_CTX *sctx);
  static void free_sessions(void);
  #ifndef OPENSSL_NO_DH
  static DH *load_dh_param(const char *dhfile);
  static DH *get_dh512(void);
  #endif
  
  #ifdef MONOLITH
  static void s_server_init(void);
  #endif
  
  #ifndef OPENSSL_NO_DH
  static unsigned char dh512_p[]={
  	0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
  	0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
  	0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
  	0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
  	0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
  	0x47,0x74,0xE8,0x33,
  	};
  static unsigned char dh512_g[]={
  	0x02,
  	};
  
  static DH *get_dh512(void)
  	{
  	DH *dh=NULL;
  
  	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))
  		return(NULL);
  	return(dh);
  	}
  #endif
  
  
  /* static int load_CA(SSL_CTX *ctx, char *file);*/
  
  #undef BUFSIZZ
  #define BUFSIZZ	16*1024
  static int bufsize=BUFSIZZ;
  static int accept_socket= -1;
  
  #define TEST_CERT	"server.pem"
  #ifndef OPENSSL_NO_TLSEXT
  #define TEST_CERT2	"server2.pem"
  #endif
  #undef PROG
  #define PROG		s_server_main
  
  extern int verify_depth, verify_return_error;
  
  static char *cipher=NULL;
  static int s_server_verify=SSL_VERIFY_NONE;
  static int s_server_session_id_context = 1; /* anything will do */
  static const char *s_cert_file=TEST_CERT,*s_key_file=NULL;
  #ifndef OPENSSL_NO_TLSEXT
  static const char *s_cert_file2=TEST_CERT2,*s_key_file2=NULL;
  #endif
  static char *s_dcert_file=NULL,*s_dkey_file=NULL;
  #ifdef FIONBIO
  static int s_nbio=0;
  #endif
  static int s_nbio_test=0;
  int s_crlf=0;
  static SSL_CTX *ctx=NULL;
  #ifndef OPENSSL_NO_TLSEXT
  static SSL_CTX *ctx2=NULL;
  #endif
  static int www=0;
  
  static BIO *bio_s_out=NULL;
  static int s_debug=0;
  #ifndef OPENSSL_NO_TLSEXT
  static int s_tlsextdebug=0;
  static int s_tlsextstatus=0;
  static int cert_status_cb(SSL *s, void *arg);
  #endif
  static int no_resume_ephemeral = 0;
  static int s_msg=0;
  static int s_quiet=0;
  
  static int hack=0;
  #ifndef OPENSSL_NO_ENGINE
  static char *engine_id=NULL;
  #endif
  static const char *session_id_prefix=NULL;
  
  static int enable_timeouts = 0;
  static long socket_mtu;
  #ifndef OPENSSL_NO_DTLS1
  static int cert_chain = 0;
  #endif
  
  #ifndef OPENSSL_NO_PSK
  static char *psk_identity="Client_identity";
  char *psk_key=NULL; /* by default PSK is not used */
  
  static unsigned int psk_server_cb(SSL *ssl, const char *identity,
  	unsigned char *psk, unsigned int max_psk_len)
  	{
  	unsigned int psk_len = 0;
  	int ret;
  	BIGNUM *bn = NULL;
  
  	if (s_debug)
  		BIO_printf(bio_s_out,"psk_server_cb\n");
  	if (!identity)
  		{
  		BIO_printf(bio_err,"Error: client did not send PSK identity\n");
  		goto out_err;
  		}
  	if (s_debug)
  		BIO_printf(bio_s_out,"identity_len=%d identity=%s\n",
  			identity ? (int)strlen(identity) : 0, identity);
  
  	/* here we could lookup the given identity e.g. from a database */
    	if (strcmp(identity, psk_identity) != 0)
  		{
                  BIO_printf(bio_s_out, "PSK error: client identity not found"
  			   " (got '%s' expected '%s')\n", identity,
  			   psk_identity);
  		goto out_err;
                  }
  	if (s_debug)
  		BIO_printf(bio_s_out, "PSK client identity found\n");
  
  	/* convert the PSK key to binary */
  	ret = BN_hex2bn(&bn, psk_key);
  	if (!ret)
  		{
  		BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
  		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);
  
  	if (ret < 0)
  		goto out_err;
  	psk_len = (unsigned int)ret;
  
  	if (s_debug)
  		BIO_printf(bio_s_out, "fetched PSK len=%d\n", psk_len);
          return psk_len;
   out_err:
  	if (s_debug)
  		BIO_printf(bio_err, "Error in PSK server callback\n");
  	return 0;
          }
  #endif
  
  #ifndef OPENSSL_NO_SRP
  /* This is a context that we pass to callbacks */
  typedef struct srpsrvparm_st
  	{
  	int verbose;
  	char *login;
  	SRP_VBASE *vb;
  	} srpsrvparm;
  
  static int MS_CALLBACK ssl_srp_server_param_cb(SSL *s, int *ad, void *arg)
  	{
  	srpsrvparm *p = arg;
  	SRP_user_pwd *user;
  
  	p->login = BUF_strdup(SSL_get_srp_username(s));
  	BIO_printf(bio_err, "SRP username = \"%s\"\n", p->login);
  
  	user = SRP_VBASE_get_by_user(p->vb, p->login);	
  	if (user == NULL)
  		{
  		BIO_printf(bio_err, "User %s doesn't exist\n", p->login);
  		return SSL3_AL_FATAL;
  		}
  	if (SSL_set_srp_server_param(s, user->N, user->g, user->s, user->v,
  				     user->info) < 0)
  		{
  		*ad = SSL_AD_INTERNAL_ERROR;
  		return SSL3_AL_FATAL;
  		}
  	return SSL_ERROR_NONE;
  	}
  
  #endif
  
  #ifdef MONOLITH
  static void s_server_init(void)
  	{
  	accept_socket=-1;
  	cipher=NULL;
  	s_server_verify=SSL_VERIFY_NONE;
  	s_dcert_file=NULL;
  	s_dkey_file=NULL;
  	s_cert_file=TEST_CERT;
  	s_key_file=NULL;
  #ifndef OPENSSL_NO_TLSEXT
  	s_cert_file2=TEST_CERT2;
  	s_key_file2=NULL;
  	ctx2=NULL;
  #endif
  #ifdef FIONBIO
  	s_nbio=0;
  #endif
  	s_nbio_test=0;
  	ctx=NULL;
  	www=0;
  
  	bio_s_out=NULL;
  	s_debug=0;
  	s_msg=0;
  	s_quiet=0;
  	hack=0;
  #ifndef OPENSSL_NO_ENGINE
  	engine_id=NULL;
  #endif
  	}
  #endif
  
  static void sv_usage(void)
  	{
  	BIO_printf(bio_err,"usage: s_server [args ...]\n");
  	BIO_printf(bio_err,"\n");
  	BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
  	BIO_printf(bio_err," -context arg  - set session ID context\n");
  	BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
  	BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
  	BIO_printf(bio_err," -cert arg     - certificate file to use\n");
  	BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
  	BIO_printf(bio_err," -crl_check    - check the peer certificate has not been revoked by its CA.\n" \
  	                   "                 The CRL(s) are appended to the certificate file\n");
  	BIO_printf(bio_err," -crl_check_all - check the peer certificate has not been revoked by its CA\n" \
  	                   "                 or any other CRL in the CA chain. CRL(s) are appened to the\n" \
  	                   "                 the certificate file.\n");
  	BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
  	BIO_printf(bio_err," -key arg      - Private Key file to use, in cert file if\n");
  	BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
  	BIO_printf(bio_err," -keyform arg  - key format (PEM, DER or ENGINE) PEM default\n");
  	BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
  	BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
  	BIO_printf(bio_err," -dcertform x  - second certificate format (PEM or DER) PEM default\n");
  	BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
  	BIO_printf(bio_err," -dkeyform arg - second key format (PEM, DER or ENGINE) PEM default\n");
  	BIO_printf(bio_err," -dpass arg    - second private key file pass phrase source\n");
  	BIO_printf(bio_err," -dhparam arg  - DH parameter file to use, in cert file if not specified\n");
  	BIO_printf(bio_err,"                 or a default set of parameters is used\n");
  #ifndef OPENSSL_NO_ECDH
  	BIO_printf(bio_err," -named_curve arg  - Elliptic curve name to use for ephemeral ECDH keys.\n" \
  	                   "                 Use \"openssl ecparam -list_curves\" for all names\n" \
  	                   "                 (default is nistp256).\n");
  #endif
  #ifdef FIONBIO
  	BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
  #endif
  	BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
  	BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
  	BIO_printf(bio_err," -debug        - Print more output\n");
  	BIO_printf(bio_err," -msg          - Show protocol messages\n");
  	BIO_printf(bio_err," -state        - Print the SSL states\n");
  	BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
  	BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
  	BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
  	BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
  	BIO_printf(bio_err," -serverpref   - Use server's cipher preferences\n");
  	BIO_printf(bio_err," -quiet        - No server output\n");
  	BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
  #ifndef OPENSSL_NO_PSK
  	BIO_printf(bio_err," -psk_hint arg - PSK identity hint to use\n");
  	BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
  # ifndef OPENSSL_NO_JPAKE
  	BIO_printf(bio_err," -jpake arg    - JPAKE secret to use\n");
  # endif
  #endif
  #ifndef OPENSSL_NO_SRP
  	BIO_printf(bio_err," -srpvfile file      - The verifier file for SRP\n");
  	BIO_printf(bio_err," -srpuserseed string - A seed string for a default user salt.\n");
  #endif
  	BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
  	BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
  	BIO_printf(bio_err," -tls1_2       - Just talk TLSv1.2\n");
  	BIO_printf(bio_err," -tls1_1       - Just talk TLSv1.1\n");
  	BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
  	BIO_printf(bio_err," -dtls1        - Just talk DTLSv1\n");
  	BIO_printf(bio_err," -timeout      - Enable timeouts\n");
  	BIO_printf(bio_err," -mtu          - Set link layer MTU\n");
  	BIO_printf(bio_err," -chain        - Read a certificate chain\n");
  	BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
  	BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
  	BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
  	BIO_printf(bio_err," -no_tls1_1    - Just disable TLSv1.1\n");
  	BIO_printf(bio_err," -no_tls1_2    - Just disable TLSv1.2\n");
  #ifndef OPENSSL_NO_DH
  	BIO_printf(bio_err," -no_dhe       - Disable ephemeral DH\n");
  #endif
  #ifndef OPENSSL_NO_ECDH
  	BIO_printf(bio_err," -no_ecdhe     - Disable ephemeral ECDH\n");
  #endif
  	BIO_printf(bio_err, "-no_resume_ephemeral - Disable caching and tickets if ephemeral (EC)DH is used\n");
  	BIO_printf(bio_err," -bugs         - Turn on SSL bug compatibility\n");
  	BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
  	BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
  	BIO_printf(bio_err," -HTTP         - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
          BIO_printf(bio_err,"                 with the assumption it contains a complete HTTP response.\n");
  #ifndef OPENSSL_NO_ENGINE
  	BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
  #endif
  	BIO_printf(bio_err," -id_prefix arg - Generate SSL/TLS session IDs prefixed by 'arg'\n");
  	BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
  #ifndef OPENSSL_NO_TLSEXT
  	BIO_printf(bio_err," -servername host - servername for HostName TLS extension\n");
  	BIO_printf(bio_err," -servername_fatal - on mismatch send fatal alert (default warning alert)\n");
  	BIO_printf(bio_err," -cert2 arg    - certificate file to use for servername\n");
  	BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT2);
  	BIO_printf(bio_err," -key2 arg     - Private Key file to use for servername, in cert file if\n");
  	BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT2);
  	BIO_printf(bio_err," -tlsextdebug  - hex dump of all TLS extensions received\n");
  	BIO_printf(bio_err," -no_ticket    - disable use of RFC4507bis session tickets\n");
  	BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
  # ifndef OPENSSL_NO_NEXTPROTONEG
  	BIO_printf(bio_err," -nextprotoneg arg - set the advertised protocols for the NPN extension (comma-separated list)\n");
  # endif
  #endif
  	}
  
  static int local_argc=0;
  static char **local_argv;
  
  #ifdef CHARSET_EBCDIC
  static int ebcdic_new(BIO *bi);
  static int ebcdic_free(BIO *a);
  static int ebcdic_read(BIO *b, char *out, int outl);
  static int ebcdic_write(BIO *b, const char *in, int inl);
  static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr);
  static int ebcdic_gets(BIO *bp, char *buf, int size);
  static int ebcdic_puts(BIO *bp, const char *str);
  
  #define BIO_TYPE_EBCDIC_FILTER	(18|0x0200)
  static BIO_METHOD methods_ebcdic=
  	{
  	BIO_TYPE_EBCDIC_FILTER,
  	"EBCDIC/ASCII filter",
  	ebcdic_write,
  	ebcdic_read,
  	ebcdic_puts,
  	ebcdic_gets,
  	ebcdic_ctrl,
  	ebcdic_new,
  	ebcdic_free,
  	};
  
  typedef struct
  {
  	size_t	alloced;
  	char	buff[1];
  } EBCDIC_OUTBUFF;
  
  BIO_METHOD *BIO_f_ebcdic_filter()
  {
  	return(&methods_ebcdic);
  }
  
  static int ebcdic_new(BIO *bi)
  {
  	EBCDIC_OUTBUFF *wbuf;
  
  	wbuf = (EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + 1024);
  	wbuf->alloced = 1024;
  	wbuf->buff[0] = '\0';
  
  	bi->ptr=(char *)wbuf;
  	bi->init=1;
  	bi->flags=0;
  	return(1);
  }
  
  static int ebcdic_free(BIO *a)
  {
  	if (a == NULL) return(0);
  	if (a->ptr != NULL)
  		OPENSSL_free(a->ptr);
  	a->ptr=NULL;
  	a->init=0;
  	a->flags=0;
  	return(1);
  }
  	
  static int ebcdic_read(BIO *b, char *out, int outl)
  {
  	int ret=0;
  
  	if (out == NULL || outl == 0) return(0);
  	if (b->next_bio == NULL) return(0);
  
  	ret=BIO_read(b->next_bio,out,outl);
  	if (ret > 0)
  		ascii2ebcdic(out,out,ret);
  	return(ret);
  }
  
  static int ebcdic_write(BIO *b, const char *in, int inl)
  {
  	EBCDIC_OUTBUFF *wbuf;
  	int ret=0;
  	int num;
  	unsigned char n;
  
  	if ((in == NULL) || (inl <= 0)) return(0);
  	if (b->next_bio == NULL) return(0);
  
  	wbuf=(EBCDIC_OUTBUFF *)b->ptr;
  
  	if (inl > (num = wbuf->alloced))
  	{
  		num = num + num;  /* double the size */
  		if (num < inl)
  			num = inl;
  		OPENSSL_free(wbuf);
  		wbuf=(EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + num);
  
  		wbuf->alloced = num;
  		wbuf->buff[0] = '\0';
  
  		b->ptr=(char *)wbuf;
  	}
  
  	ebcdic2ascii(wbuf->buff, in, inl);
  
  	ret=BIO_write(b->next_bio, wbuf->buff, inl);
  
  	return(ret);
  }
  
  static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr)
  {
  	long ret;
  
  	if (b->next_bio == NULL) return(0);
  	switch (cmd)
  	{
  	case BIO_CTRL_DUP:
  		ret=0L;
  		break;
  	default:
  		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
  		break;
  	}
  	return(ret);
  }
  
  static int ebcdic_gets(BIO *bp, char *buf, int size)
  {
  	int i, ret=0;
  	if (bp->next_bio == NULL) return(0);
  /*	return(BIO_gets(bp->next_bio,buf,size));*/
  	for (i=0; i<size-1; ++i)
  	{
  		ret = ebcdic_read(bp,&buf[i],1);
  		if (ret <= 0)
  			break;
  		else if (buf[i] == '\n')
  		{
  			++i;
  			break;
  		}
  	}
  	if (i < size)
  		buf[i] = '\0';
  	return (ret < 0 && i == 0) ? ret : i;
  }
  
  static int ebcdic_puts(BIO *bp, const char *str)
  {
  	if (bp->next_bio == NULL) return(0);
  	return ebcdic_write(bp, str, strlen(str));
  }
  #endif
  
  #ifndef OPENSSL_NO_TLSEXT
  
  /* This is a context that we pass to callbacks */
  typedef struct tlsextctx_st {
     char * servername;
     BIO * biodebug;
     int extension_error;
  } tlsextctx;
  
  
  static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
  	{
  	tlsextctx * p = (tlsextctx *) arg;
  	const char * servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
          if (servername && p->biodebug) 
  		BIO_printf(p->biodebug,"Hostname in TLS extension: \"%s\"\n",servername);
          
  	if (!p->servername)
  		return SSL_TLSEXT_ERR_NOACK;
  	
  	if (servername)
  		{
      		if (strcmp(servername,p->servername)) 
  			return p->extension_error;
  		if (ctx2)
  			{
  			BIO_printf(p->biodebug,"Switching server context.\n");
  			SSL_set_SSL_CTX(s,ctx2);
  			}     
  		}
  	return SSL_TLSEXT_ERR_OK;
  }
  
  /* Structure passed to cert status callback */
  
  typedef struct tlsextstatusctx_st {
     /* Default responder to use */
     char *host, *path, *port;
     int use_ssl;
     int timeout;
     BIO *err;
     int verbose;
  } tlsextstatusctx;
  
  static tlsextstatusctx tlscstatp = {NULL, NULL, NULL, 0, -1, NULL, 0};
  
  /* Certificate Status callback. This is called when a client includes a
   * certificate status request extension.
   *
   * This is a simplified version. It examines certificates each time and
   * makes one OCSP responder query for each request.
   *
   * A full version would store details such as the OCSP certificate IDs and
   * minimise the number of OCSP responses by caching them until they were
   * considered "expired".
   */
  
  static int cert_status_cb(SSL *s, void *arg)
  	{
  	tlsextstatusctx *srctx = arg;
  	BIO *err = srctx->err;
  	char *host, *port, *path;
  	int use_ssl;
  	unsigned char *rspder = NULL;
  	int rspderlen;
  	STACK_OF(OPENSSL_STRING) *aia = NULL;
  	X509 *x = NULL;
  	X509_STORE_CTX inctx;
  	X509_OBJECT obj;
  	OCSP_REQUEST *req = NULL;
  	OCSP_RESPONSE *resp = NULL;
  	OCSP_CERTID *id = NULL;
  	STACK_OF(X509_EXTENSION) *exts;
  	int ret = SSL_TLSEXT_ERR_NOACK;
  	int i;
  #if 0
  STACK_OF(OCSP_RESPID) *ids;
  SSL_get_tlsext_status_ids(s, &ids);
  BIO_printf(err, "cert_status: received %d ids\n", sk_OCSP_RESPID_num(ids));
  #endif
  	if (srctx->verbose)
  		BIO_puts(err, "cert_status: callback called\n");
  	/* Build up OCSP query from server certificate */
  	x = SSL_get_certificate(s);
  	aia = X509_get1_ocsp(x);
  	if (aia)
  		{
  		if (!OCSP_parse_url(sk_OPENSSL_STRING_value(aia, 0),
  			&host, &port, &path, &use_ssl))
  			{
  			BIO_puts(err, "cert_status: can't parse AIA URL\n");
  			goto err;
  			}
  		if (srctx->verbose)
  			BIO_printf(err, "cert_status: AIA URL: %s\n",
  					sk_OPENSSL_STRING_value(aia, 0));
  		}
  	else
  		{
  		if (!srctx->host)
  			{
  			BIO_puts(srctx->err, "cert_status: no AIA and no default responder URL\n");
  			goto done;
  			}
  		host = srctx->host;
  		path = srctx->path;
  		port = srctx->port;
  		use_ssl = srctx->use_ssl;
  		}
  		
  	if (!X509_STORE_CTX_init(&inctx,
  				SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)),
  				NULL, NULL))
  		goto err;
  	if (X509_STORE_get_by_subject(&inctx,X509_LU_X509,
  				X509_get_issuer_name(x),&obj) <= 0)
  		{
  		BIO_puts(err, "cert_status: Can't retrieve issuer certificate.\n");
  		X509_STORE_CTX_cleanup(&inctx);
  		goto done;
  		}
  	req = OCSP_REQUEST_new();
  	if (!req)
  		goto err;
  	id = OCSP_cert_to_id(NULL, x, obj.data.x509);
  	X509_free(obj.data.x509);
  	X509_STORE_CTX_cleanup(&inctx);
  	if (!id)
  		goto err;
  	if (!OCSP_request_add0_id(req, id))
  		goto err;
  	id = NULL;
  	/* Add any extensions to the request */
  	SSL_get_tlsext_status_exts(s, &exts);
  	for (i = 0; i < sk_X509_EXTENSION_num(exts); i++)
  		{
  		X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
  		if (!OCSP_REQUEST_add_ext(req, ext, -1))
  			goto err;
  		}
  	resp = process_responder(err, req, host, path, port, use_ssl, NULL,
  					srctx->timeout);
  	if (!resp)
  		{
  		BIO_puts(err, "cert_status: error querying responder\n");
  		goto done;
  		}
  	rspderlen = i2d_OCSP_RESPONSE(resp, &rspder);
  	if (rspderlen <= 0)
  		goto err;
  	SSL_set_tlsext_status_ocsp_resp(s, rspder, rspderlen);
  	if (srctx->verbose)
  		{
  		BIO_puts(err, "cert_status: ocsp response sent:\n");
  		OCSP_RESPONSE_print(err, resp, 2);
  		}
  	ret = SSL_TLSEXT_ERR_OK;
  	done:
  	if (ret != SSL_TLSEXT_ERR_OK)
  		ERR_print_errors(err);
  	if (aia)
  		{
  		OPENSSL_free(host);
  		OPENSSL_free(path);
  		OPENSSL_free(port);
  		X509_email_free(aia);
  		}
  	if (id)
  		OCSP_CERTID_free(id);
  	if (req)
  		OCSP_REQUEST_free(req);
  	if (resp)
  		OCSP_RESPONSE_free(resp);
  	return ret;
  	err:
  	ret = SSL_TLSEXT_ERR_ALERT_FATAL;
  	goto done;
  	}
  
  # ifndef OPENSSL_NO_NEXTPROTONEG
  /* This is the context that we pass to next_proto_cb */
  typedef struct tlsextnextprotoctx_st {
  	unsigned char *data;
  	unsigned int len;
  } tlsextnextprotoctx;
  
  static int next_proto_cb(SSL *s, const unsigned char **data, unsigned int *len, void *arg)
  	{
  	tlsextnextprotoctx *next_proto = arg;
  
  	*data = next_proto->data;
  	*len = next_proto->len;
  
  	return SSL_TLSEXT_ERR_OK;
  	}
  # endif  /* ndef OPENSSL_NO_NPN */
  #endif
  
  static int not_resumable_sess_cb(SSL *s, int is_forward_secure)
  	{
  	/* disable resumption for sessions with forward secure ciphers */
  	return is_forward_secure;
  	}
  
  int MAIN(int, char **);
  
  #ifndef OPENSSL_NO_JPAKE
  static char *jpake_secret = NULL;
  #endif
  
  int MAIN(int argc, char *argv[])
  	{
  	X509_VERIFY_PARAM *vpm = NULL;
  	int badarg = 0;
  	short port=PORT;
  	char *CApath=NULL,*CAfile=NULL;
  	unsigned char *context = NULL;
  	char *dhfile = NULL;
  #ifndef OPENSSL_NO_ECDH
  	char *named_curve = NULL;
  #endif
  	int badop=0,bugs=0;
  	int ret=1;
  	int off=0;
  	int no_tmp_rsa=0,no_dhe=0,no_ecdhe=0,nocert=0;
  	int state=0;
  	const SSL_METHOD *meth=NULL;
  	int socket_type=SOCK_STREAM;
  	ENGINE *e=NULL;
  	char *inrand=NULL;
  	int s_cert_format = FORMAT_PEM, s_key_format = FORMAT_PEM;
  	char *passarg = NULL, *pass = NULL;
  	char *dpassarg = NULL, *dpass = NULL;
  	int s_dcert_format = FORMAT_PEM, s_dkey_format = FORMAT_PEM;
  	X509 *s_cert = NULL, *s_dcert = NULL;
  	EVP_PKEY *s_key = NULL, *s_dkey = NULL;
  	int no_cache = 0, ext_cache = 0;
  #ifndef OPENSSL_NO_TLSEXT
  	EVP_PKEY *s_key2 = NULL;
  	X509 *s_cert2 = NULL;
  #endif
  #ifndef OPENSSL_NO_TLSEXT
          tlsextctx tlsextcbp = {NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING};
  # ifndef OPENSSL_NO_NEXTPROTONEG
  	const char *next_proto_neg_in = NULL;
  	tlsextnextprotoctx next_proto;
  # endif
  #endif
  #ifndef OPENSSL_NO_PSK
  	/* by default do not send a PSK identity hint */
  	static char *psk_identity_hint=NULL;
  #endif
  #ifndef OPENSSL_NO_SRP
  	char *srpuserseed = NULL;
  	char *srp_verifier_file = NULL;
  	srpsrvparm p;
  #endif
  #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
  	meth=SSLv23_server_method();
  #elif !defined(OPENSSL_NO_SSL3)
  	meth=SSLv3_server_method();
  #elif !defined(OPENSSL_NO_SSL2)
  	meth=SSLv2_server_method();
  #elif !defined(OPENSSL_NO_TLS1)
  	meth=TLSv1_server_method();
  #else
    /*  #error no SSL version enabled */
  #endif
  
  	local_argc=argc;
  	local_argv=argv;
  
  	apps_startup();
  #ifdef MONOLITH
  	s_server_init();
  #endif
  
  	if (bio_err == NULL)
  		bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
  
  	if (!load_config(bio_err, NULL))
  		goto end;
  
  	verify_depth=0;
  #ifdef FIONBIO
  	s_nbio=0;
  #endif
  	s_nbio_test=0;
  
  	argc--;
  	argv++;
  
  	while (argc >= 1)
  		{
  		if	((strcmp(*argv,"-port") == 0) ||
  			 (strcmp(*argv,"-accept") == 0))
  			{
  			if (--argc < 1) goto bad;
  			if (!extract_port(*(++argv),&port))
  				goto bad;
  			}
  		else if	(strcmp(*argv,"-verify") == 0)
  			{
  			s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
  			if (--argc < 1) goto bad;
  			verify_depth=atoi(*(++argv));
  			BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
  			}
  		else if	(strcmp(*argv,"-Verify") == 0)
  			{
  			s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
  				SSL_VERIFY_CLIENT_ONCE;
  			if (--argc < 1) goto bad;
  			verify_depth=atoi(*(++argv));
  			BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
  			}
  		else if	(strcmp(*argv,"-context") == 0)
  			{
  			if (--argc < 1) goto bad;
  			context= (unsigned char *)*(++argv);
  			}
  		else if	(strcmp(*argv,"-cert") == 0)
  			{
  			if (--argc < 1) goto bad;
  			s_cert_file= *(++argv);
  			}
  		else if	(strcmp(*argv,"-certform") == 0)
  			{
  			if (--argc < 1) goto bad;
  			s_cert_format = str2fmt(*(++argv));
  			}
  		else if	(strcmp(*argv,"-key") == 0)
  			{
  			if (--argc < 1) goto bad;
  			s_key_file= *(++argv);
  			}
  		else if	(strcmp(*argv,"-keyform") == 0)
  			{
  			if (--argc < 1) goto bad;
  			s_key_format = str2fmt(*(++argv));
  			}
  		else if	(strcmp(*argv,"-pass") == 0)
  			{
  			if (--argc < 1) goto bad;
  			passarg = *(++argv);
  			}
  		else if	(strcmp(*argv,"-dhparam") == 0)
  			{
  			if (--argc < 1) goto bad;
  			dhfile = *(++argv);
  			}
  #ifndef OPENSSL_NO_ECDH		
  		else if	(strcmp(*argv,"-named_curve") == 0)
  			{
  			if (--argc < 1) goto bad;
  			named_curve = *(++argv);
  			}
  #endif
  		else if	(strcmp(*argv,"-dcertform") == 0)
  			{
  			if (--argc < 1) goto bad;
  			s_dcert_format = str2fmt(*(++argv));
  			}
  		else if	(strcmp(*argv,"-dcert") == 0)
  			{
  			if (--argc < 1) goto bad;
  			s_dcert_file= *(++argv);
  			}
  		else if	(strcmp(*argv,"-dkeyform") == 0)
  			{
  			if (--argc < 1) goto bad;
  			s_dkey_format = str2fmt(*(++argv));
  			}
  		else if	(strcmp(*argv,"-dpass") == 0)
  			{
  			if (--argc < 1) goto bad;
  			dpassarg = *(++argv);
  			}
  		else if	(strcmp(*argv,"-dkey") == 0)
  			{
  			if (--argc < 1) goto bad;
  			s_dkey_file= *(++argv);
  			}
  		else if (strcmp(*argv,"-nocert") == 0)
  			{
  			nocert=1;
  			}
  		else if	(strcmp(*argv,"-CApath") == 0)
  			{
  			if (--argc < 1) goto bad;
  			CApath= *(++argv);
  			}
  		else if (strcmp(*argv,"-no_cache") == 0)
  			no_cache = 1;
  		else if (strcmp(*argv,"-ext_cache") == 0)
  			ext_cache = 1;
  		else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm))
  			{
  			if (badarg)
  				goto bad;
  			continue;
  			}
  		else if (strcmp(*argv,"-verify_return_error") == 0)
  			verify_return_error = 1;
  		else if	(strcmp(*argv,"-serverpref") == 0)
  			{ off|=SSL_OP_CIPHER_SERVER_PREFERENCE; }
  		else if (strcmp(*argv,"-legacy_renegotiation") == 0)
  			off|=SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
  		else if	(strcmp(*argv,"-cipher") == 0)
  			{
  			if (--argc < 1) goto bad;
  			cipher= *(++argv);
  			}
  		else if	(strcmp(*argv,"-CAfile") == 0)
  			{
  			if (--argc < 1) goto bad;
  			CAfile= *(++argv);
  			}
  #ifdef FIONBIO	
  		else if	(strcmp(*argv,"-nbio") == 0)
  			{ s_nbio=1; }
  #endif
  		else if	(strcmp(*argv,"-nbio_test") == 0)
  			{
  #ifdef FIONBIO	
  			s_nbio=1;
  #endif
  			s_nbio_test=1;
  			}
  		else if	(strcmp(*argv,"-debug") == 0)
  			{ s_debug=1; }
  #ifndef OPENSSL_NO_TLSEXT
  		else if	(strcmp(*argv,"-tlsextdebug") == 0)
  			s_tlsextdebug=1;
  		else if	(strcmp(*argv,"-status") == 0)
  			s_tlsextstatus=1;
  		else if	(strcmp(*argv,"-status_verbose") == 0)
  			{
  			s_tlsextstatus=1;
  			tlscstatp.verbose = 1;
  			}
  		else if (!strcmp(*argv, "-status_timeout"))
  			{
  			s_tlsextstatus=1;
                          if (--argc < 1) goto bad;
  			tlscstatp.timeout = atoi(*(++argv));
  			}
  		else if (!strcmp(*argv, "-status_url"))
  			{
  			s_tlsextstatus=1;
                          if (--argc < 1) goto bad;
  			if (!OCSP_parse_url(*(++argv),
  					&tlscstatp.host,
  					&tlscstatp.port,
  					&tlscstatp.path,
  					&tlscstatp.use_ssl))
  				{
  				BIO_printf(bio_err, "Error parsing URL\n");
  				goto bad;
  				}
  			}
  #endif
  		else if	(strcmp(*argv,"-msg") == 0)
  			{ s_msg=1; }
  		else if	(strcmp(*argv,"-hack") == 0)
  			{ hack=1; }
  		else if	(strcmp(*argv,"-state") == 0)
  			{ state=1; }
  		else if	(strcmp(*argv,"-crlf") == 0)
  			{ s_crlf=1; }
  		else if	(strcmp(*argv,"-quiet") == 0)
  			{ s_quiet=1; }
  		else if	(strcmp(*argv,"-bugs") == 0)
  			{ bugs=1; }
  		else if	(strcmp(*argv,"-no_tmp_rsa") == 0)
  			{ no_tmp_rsa=1; }
  		else if	(strcmp(*argv,"-no_dhe") == 0)
  			{ no_dhe=1; }
  		else if	(strcmp(*argv,"-no_ecdhe") == 0)
  			{ no_ecdhe=1; }
  		else if (strcmp(*argv,"-no_resume_ephemeral") == 0)
  			{ no_resume_ephemeral = 1; }
  #ifndef OPENSSL_NO_PSK
                  else if (strcmp(*argv,"-psk_hint") == 0)
  			{
                          if (--argc < 1) goto bad;
                          psk_identity_hint= *(++argv);
                          }
                  else if (strcmp(*argv,"-psk") == 0)
  			{
  			size_t i;
  
  			if (--argc < 1) goto bad;
  			psk_key=*(++argv);
  			for (i=0; i<strlen(psk_key); i++)
  				{
  				if (isxdigit((int)psk_key[i]))
  					continue;
  				BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
  				goto bad;
  				}
  			}
  #endif
  #ifndef OPENSSL_NO_SRP
  		else if (strcmp(*argv, "-srpvfile") == 0)
  			{
  			if (--argc < 1) goto bad;
  			srp_verifier_file = *(++argv);
  			meth = TLSv1_server_method();
  			}
  		else if (strcmp(*argv, "-srpuserseed") == 0)
  			{
  			if (--argc < 1) goto bad;
  			srpuserseed = *(++argv);
  			meth = TLSv1_server_method();
  			}
  #endif
  		else if	(strcmp(*argv,"-www") == 0)
  			{ www=1; }
  		else if	(strcmp(*argv,"-WWW") == 0)
  			{ www=2; }
  		else if	(strcmp(*argv,"-HTTP") == 0)
  			{ www=3; }
  		else if	(strcmp(*argv,"-no_ssl2") == 0)
  			{ off|=SSL_OP_NO_SSLv2; }
  		else if	(strcmp(*argv,"-no_ssl3") == 0)
  			{ off|=SSL_OP_NO_SSLv3; }
  		else if	(strcmp(*argv,"-no_tls1_2") == 0)
  			{ off|=SSL_OP_NO_TLSv1_2; }
  		else if	(strcmp(*argv,"-no_tls1_1") == 0)
  			{ off|=SSL_OP_NO_TLSv1_1; }
  		else if	(strcmp(*argv,"-no_tls1") == 0)
  			{ off|=SSL_OP_NO_TLSv1; }
  		else if	(strcmp(*argv,"-no_comp") == 0)
  			{ off|=SSL_OP_NO_COMPRESSION; }
  #ifndef OPENSSL_NO_TLSEXT
  		else if	(strcmp(*argv,"-no_ticket") == 0)
  			{ off|=SSL_OP_NO_TICKET; }
  #endif
  #ifndef OPENSSL_NO_SSL2
  		else if	(strcmp(*argv,"-ssl2") == 0)
  			{ meth=SSLv2_server_method(); }
  #endif
  #ifndef OPENSSL_NO_SSL3
  		else if	(strcmp(*argv,"-ssl3") == 0)
  			{ meth=SSLv3_server_method(); }
  #endif
  #ifndef OPENSSL_NO_TLS1
  		else if	(strcmp(*argv,"-tls1_2") == 0)
  			{ meth=TLSv1_2_server_method(); }
  		else if	(strcmp(*argv,"-tls1_1") == 0)
  			{ meth=TLSv1_1_server_method(); }
  		else if	(strcmp(*argv,"-tls1") == 0)
  			{ meth=TLSv1_server_method(); }
  		else if	(strcmp(*argv,"-tls1_1") == 0)
  			{ meth=TLSv1_1_server_method(); }
  #endif
  #ifndef OPENSSL_NO_DTLS1
  		else if	(strcmp(*argv,"-dtls1") == 0)
  			{ 
  			meth=DTLSv1_server_method();
  			socket_type = SOCK_DGRAM;
  			}
  		else if (strcmp(*argv,"-timeout") == 0)
  			enable_timeouts = 1;
  		else if (strcmp(*argv,"-mtu") == 0)
  			{
  			if (--argc < 1) goto bad;
  			socket_mtu = atol(*(++argv));
  			}
  		else if (strcmp(*argv, "-chain") == 0)
  			cert_chain = 1;
  #endif
  		else if (strcmp(*argv, "-id_prefix") == 0)
  			{
  			if (--argc < 1) goto bad;
  			session_id_prefix = *(++argv);
  			}
  #ifndef OPENSSL_NO_ENGINE
  		else if (strcmp(*argv,"-engine") == 0)
  			{
  			if (--argc < 1) goto bad;
  			engine_id= *(++argv);
  			}
  #endif
  		else if (strcmp(*argv,"-rand") == 0)
  			{
  			if (--argc < 1) goto bad;
  			inrand= *(++argv);
  			}
  #ifndef OPENSSL_NO_TLSEXT
  		else if (strcmp(*argv,"-servername") == 0)
  			{
  			if (--argc < 1) goto bad;
  			tlsextcbp.servername= *(++argv);
  			}
  		else if (strcmp(*argv,"-servername_fatal") == 0)
  			{ tlsextcbp.extension_error = SSL_TLSEXT_ERR_ALERT_FATAL; }
  		else if	(strcmp(*argv,"-cert2") == 0)
  			{
  			if (--argc < 1) goto bad;
  			s_cert_file2= *(++argv);
  			}
  		else if	(strcmp(*argv,"-key2") == 0)
  			{
  			if (--argc < 1) goto bad;
  			s_key_file2= *(++argv);
  			}
  # ifndef OPENSSL_NO_NEXTPROTONEG
  		else if	(strcmp(*argv,"-nextprotoneg") == 0)
  			{
  			if (--argc < 1) goto bad;
  			next_proto_neg_in = *(++argv);
  			}
  # endif
  #endif
  #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
  		else if (strcmp(*argv,"-jpake") == 0)
  			{
  			if (--argc < 1) goto bad;
  			jpake_secret = *(++argv);
  			}
  #endif
  		else
  			{
  			BIO_printf(bio_err,"unknown option %s\n",*argv);
  			badop=1;
  			break;
  			}
  		argc--;
  		argv++;
  		}
  	if (badop)
  		{
  bad:
  		sv_usage();
  		goto end;
  		}
  
  #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
  	if (jpake_secret)
  		{
  		if (psk_key)
  			{
  			BIO_printf(bio_err,
  				   "Can't use JPAKE and PSK together\n");
  			goto end;
  			}
  		psk_identity = "JPAKE";
  		if (cipher)
  			{
  			BIO_printf(bio_err, "JPAKE sets cipher to PSK\n");
  			goto end;
  			}
  		cipher = "PSK";
  		}
  
  #endif
  
  	SSL_load_error_strings();
  	OpenSSL_add_ssl_algorithms();
  
  #ifndef OPENSSL_NO_ENGINE
          e = setup_engine(bio_err, engine_id, 1);
  #endif
  
  	if (!app_passwd(bio_err, passarg, dpassarg, &pass, &dpass))
  		{
  		BIO_printf(bio_err, "Error getting password\n");
  		goto end;
  		}
  
  
  	if (s_key_file == NULL)
  		s_key_file = s_cert_file;
  #ifndef OPENSSL_NO_TLSEXT
  	if (s_key_file2 == NULL)
  		s_key_file2 = s_cert_file2;
  #endif
  
  	if (nocert == 0)
  		{
  		s_key = load_key(bio_err, s_key_file, s_key_format, 0, pass, e,
  		       "server certificate private key file");
  		if (!s_key)
  			{
  			ERR_print_errors(bio_err);
  			goto end;
  			}
  
  		s_cert = load_cert(bio_err,s_cert_file,s_cert_format,
  			NULL, e, "server certificate file");
  
  		if (!s_cert)
  			{
  			ERR_print_errors(bio_err);
  			goto end;
  			}
  
  #ifndef OPENSSL_NO_TLSEXT
  		if (tlsextcbp.servername) 
  			{
  			s_key2 = load_key(bio_err, s_key_file2, s_key_format, 0, pass, e,
  				"second server certificate private key file");
  			if (!s_key2)
  				{
  				ERR_print_errors(bio_err);
  				goto end;
  				}
  			
  			s_cert2 = load_cert(bio_err,s_cert_file2,s_cert_format,
  				NULL, e, "second server certificate file");
  			
  			if (!s_cert2)
  				{
  				ERR_print_errors(bio_err);
  				goto end;
  				}
  			}
  # ifndef OPENSSL_NO_NEXTPROTONEG
  		if (next_proto_neg_in)
  			{
  			unsigned short len;
  			next_proto.data = next_protos_parse(&len,
  				next_proto_neg_in);
  			if (next_proto.data == NULL)
  				goto end;
  			next_proto.len = len;
  			}
  		else
  			{
  			next_proto.data = NULL;
  			}
  # endif
  #endif
  		}
  
  
  	if (s_dcert_file)
  		{
  
  		if (s_dkey_file == NULL)
  			s_dkey_file = s_dcert_file;
  
  		s_dkey = load_key(bio_err, s_dkey_file, s_dkey_format,
  				0, dpass, e,
  			       "second certificate private key file");
  		if (!s_dkey)
  			{
  			ERR_print_errors(bio_err);
  			goto end;
  			}
  
  		s_dcert = load_cert(bio_err,s_dcert_file,s_dcert_format,
  				NULL, e, "second server certificate file");
  
  		if (!s_dcert)
  			{
  			ERR_print_errors(bio_err);
  			goto end;
  			}
  
  		}
  
  	if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
  		&& !RAND_status())
  		{
  		BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
  		}
  	if (inrand != NULL)
  		BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
  			app_RAND_load_files(inrand));
  
  	if (bio_s_out == NULL)
  		{
  		if (s_quiet && !s_debug && !s_msg)
  			{
  			bio_s_out=BIO_new(BIO_s_null());
  			}
  		else
  			{
  			if (bio_s_out == NULL)
  				bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
  			}
  		}
  
  #if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
  	if (nocert)
  #endif
  		{
  		s_cert_file=NULL;
  		s_key_file=NULL;
  		s_dcert_file=NULL;
  		s_dkey_file=NULL;
  #ifndef OPENSSL_NO_TLSEXT
  		s_cert_file2=NULL;
  		s_key_file2=NULL;
  #endif
  		}
  
  	ctx=SSL_CTX_new(meth);
  	if (ctx == NULL)
  		{
  		ERR_print_errors(bio_err);
  		goto end;
  		}
  	if (session_id_prefix)
  		{
  		if(strlen(session_id_prefix) >= 32)
  			BIO_printf(bio_err,
  "warning: id_prefix is too long, only one new session will be possible\n");
  		else if(strlen(session_id_prefix) >= 16)
  			BIO_printf(bio_err,
  "warning: id_prefix is too long if you use SSLv2\n");
  		if(!SSL_CTX_set_generate_session_id(ctx, generate_session_id))
  			{
  			BIO_printf(bio_err,"error setting 'id_prefix'\n");
  			ERR_print_errors(bio_err);
  			goto end;
  			}
  		BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
  		}
  	SSL_CTX_set_quiet_shutdown(ctx,1);
  	if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
  	if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
  	SSL_CTX_set_options(ctx,off);
  	/* DTLS: partial reads end up discarding unread UDP bytes :-( 
  	 * Setting read ahead solves this problem.
  	 */
  	if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
  
  	if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
  	if (no_cache)
  		SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
  	else if (ext_cache)
  		init_session_cache_ctx(ctx);
  	else
  		SSL_CTX_sess_set_cache_size(ctx,128);
  
  #if 0
  	if (cipher == NULL) cipher=getenv("SSL_CIPHER");
  #endif
  
  #if 0
  	if (s_cert_file == NULL)
  		{
  		BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
  		goto end;
  		}
  #endif
  
  	if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
  		(!SSL_CTX_set_default_verify_paths(ctx)))
  		{
  		/* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
  		ERR_print_errors(bio_err);
  		/* goto end; */
  		}
  	if (vpm)
  		SSL_CTX_set1_param(ctx, vpm);
  
  #ifndef OPENSSL_NO_TLSEXT
  	if (s_cert2)
  		{
  		ctx2=SSL_CTX_new(meth);
  		if (ctx2 == NULL)
  			{
  			ERR_print_errors(bio_err);
  			goto end;
  			}
  		}
  	
  	if (ctx2)
  		{
  		BIO_printf(bio_s_out,"Setting secondary ctx parameters\n");
  
  		if (session_id_prefix)
  			{
  			if(strlen(session_id_prefix) >= 32)
  				BIO_printf(bio_err,
  					"warning: id_prefix is too long, only one new session will be possible\n");
  			else if(strlen(session_id_prefix) >= 16)
  				BIO_printf(bio_err,
  					"warning: id_prefix is too long if you use SSLv2\n");
  			if(!SSL_CTX_set_generate_session_id(ctx2, generate_session_id))
  				{
  				BIO_printf(bio_err,"error setting 'id_prefix'\n");
  				ERR_print_errors(bio_err);
  				goto end;
  				}
  			BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);
  			}
  		SSL_CTX_set_quiet_shutdown(ctx2,1);
  		if (bugs) SSL_CTX_set_options(ctx2,SSL_OP_ALL);
  		if (hack) SSL_CTX_set_options(ctx2,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
  		SSL_CTX_set_options(ctx2,off);
  		/* DTLS: partial reads end up discarding unread UDP bytes :-( 
  		 * Setting read ahead solves this problem.
  		 */
  		if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx2, 1);
  
  		if (state) SSL_CTX_set_info_callback(ctx2,apps_ssl_info_callback);
  
  		if (no_cache)
  			SSL_CTX_set_session_cache_mode(ctx2,SSL_SESS_CACHE_OFF);
  		else if (ext_cache)
  			init_session_cache_ctx(ctx2);
  		else
  			SSL_CTX_sess_set_cache_size(ctx2,128);
  
  		if ((!SSL_CTX_load_verify_locations(ctx2,CAfile,CApath)) ||
  			(!SSL_CTX_set_default_verify_paths(ctx2)))
  			{
  			ERR_print_errors(bio_err);
  			}
  		if (vpm)
  			SSL_CTX_set1_param(ctx2, vpm);
  		}
  
  # ifndef OPENSSL_NO_NEXTPROTONEG
  	if (next_proto.data)
  		SSL_CTX_set_next_protos_advertised_cb(ctx, next_proto_cb, &next_proto);
  # endif
  #endif 
  
  #ifndef OPENSSL_NO_DH
  	if (!no_dhe)
  		{
  		DH *dh=NULL;
  
  		if (dhfile)
  			dh = load_dh_param(dhfile);
  		else if (s_cert_file)
  			dh = load_dh_param(s_cert_file);
  
  		if (dh != NULL)
  			{
  			BIO_printf(bio_s_out,"Setting temp DH parameters\n");
  			}
  		else
  			{
  			BIO_printf(bio_s_out,"Using default temp DH parameters\n");
  			dh=get_dh512();
  			}
  		(void)BIO_flush(bio_s_out);
  
  		SSL_CTX_set_tmp_dh(ctx,dh);
  #ifndef OPENSSL_NO_TLSEXT
  		if (ctx2)
  			{
  			if (!dhfile)
  				{ 
  				DH *dh2=load_dh_param(s_cert_file2);
  				if (dh2 != NULL)
  					{
  					BIO_printf(bio_s_out,"Setting temp DH parameters\n");
  					(void)BIO_flush(bio_s_out);
  
  					DH_free(dh);
  					dh = dh2;
  					}
  				}
  			SSL_CTX_set_tmp_dh(ctx2,dh);
  			}
  #endif
  		DH_free(dh);
  		}
  #endif
  
  #ifndef OPENSSL_NO_ECDH
  	if (!no_ecdhe)
  		{
  		EC_KEY *ecdh=NULL;
  
  		if (named_curve)
  			{
  			int nid = OBJ_sn2nid(named_curve);
  
  			if (nid == 0)
  				{
  				BIO_printf(bio_err, "unknown curve name (%s)\n", 
  					named_curve);
  				goto end;
  				}
  			ecdh = EC_KEY_new_by_curve_name(nid);
  			if (ecdh == NULL)
  				{
  				BIO_printf(bio_err, "unable to create curve (%s)\n", 
  					named_curve);
  				goto end;
  				}
  			}
  
  		if (ecdh != NULL)
  			{
  			BIO_printf(bio_s_out,"Setting temp ECDH parameters\n");
  			}
  		else
  			{
  			BIO_printf(bio_s_out,"Using default temp ECDH parameters\n");
  			ecdh = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
  			if (ecdh == NULL) 
  				{
  				BIO_printf(bio_err, "unable to create curve (nistp256)\n");
  				goto end;
  				}
  			}
  		(void)BIO_flush(bio_s_out);
  
  		SSL_CTX_set_tmp_ecdh(ctx,ecdh);
  #ifndef OPENSSL_NO_TLSEXT
  		if (ctx2) 
  			SSL_CTX_set_tmp_ecdh(ctx2,ecdh);
  #endif
  		EC_KEY_free(ecdh);
  		}
  #endif
  	
  	if (!set_cert_key_stuff(ctx,s_cert,s_key))
  		goto end;
  #ifndef OPENSSL_NO_TLSEXT
  	if (ctx2 && !set_cert_key_stuff(ctx2,s_cert2,s_key2))
  		goto end; 
  #endif
  	if (s_dcert != NULL)
  		{
  		if (!set_cert_key_stuff(ctx,s_dcert,s_dkey))
  			goto end;
  		}
  
  #ifndef OPENSSL_NO_RSA
  #if 1
  	if (!no_tmp_rsa)
  		{
  		SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
  #ifndef OPENSSL_NO_TLSEXT
  		if (ctx2) 
  			SSL_CTX_set_tmp_rsa_callback(ctx2,tmp_rsa_cb);
  #endif		
  		}
  #else
  	if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
  		{
  		RSA *rsa;
  
  		BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
  		BIO_flush(bio_s_out);
  
  		rsa=RSA_generate_key(512,RSA_F4,NULL);
  
  		if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
  			{
  			ERR_print_errors(bio_err);
  			goto end;
  			}
  #ifndef OPENSSL_NO_TLSEXT
  			if (ctx2)
  				{
  				if (!SSL_CTX_set_tmp_rsa(ctx2,rsa))
  					{
  					ERR_print_errors(bio_err);
  					goto end;
  					}
  				}
  #endif
  		RSA_free(rsa);
  		BIO_printf(bio_s_out,"\n");
  		}
  #endif
  #endif
  
  	if (no_resume_ephemeral)
  		{
  		SSL_CTX_set_not_resumable_session_callback(ctx, not_resumable_sess_cb);
  #ifndef OPENSSL_NO_TLSEXT
  		if (ctx2)
  			SSL_CTX_set_not_resumable_session_callback(ctx2, not_resumable_sess_cb);
  #endif
  		}
  
  #ifndef OPENSSL_NO_PSK
  #ifdef OPENSSL_NO_JPAKE
  	if (psk_key != NULL)
  #else
  	if (psk_key != NULL || jpake_secret)
  #endif
  		{
  		if (s_debug)
  			BIO_printf(bio_s_out, "PSK key given or JPAKE in use, setting server callback\n");
  		SSL_CTX_set_psk_server_callback(ctx, psk_server_cb);
  		}
  
  	if (!SSL_CTX_use_psk_identity_hint(ctx, psk_identity_hint))
  		{
  		BIO_printf(bio_err,"error setting PSK identity hint to context\n");
  		ERR_print_errors(bio_err);
  		goto end;
  		}
  #endif
  
  	if (cipher != NULL)
  		{
  		if(!SSL_CTX_set_cipher_list(ctx,cipher))
  			{
  			BIO_printf(bio_err,"error setting cipher list\n");
  			ERR_print_errors(bio_err);
  			goto end;
  			}
  #ifndef OPENSSL_NO_TLSEXT
  		if (ctx2 && !SSL_CTX_set_cipher_list(ctx2,cipher))
  			{
  			BIO_printf(bio_err,"error setting cipher list\n");
  			ERR_print_errors(bio_err);
  			goto end;
  			}
  #endif
  		}
  	SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
  	SSL_CTX_set_session_id_context(ctx,(void*)&s_server_session_id_context,
  		sizeof s_server_session_id_context);
  
  	/* Set DTLS cookie generation and verification callbacks */
  	SSL_CTX_set_cookie_generate_cb(ctx, generate_cookie_callback);
  	SSL_CTX_set_cookie_verify_cb(ctx, verify_cookie_callback);
  
  #ifndef OPENSSL_NO_TLSEXT
  	if (ctx2)
  		{
  		SSL_CTX_set_verify(ctx2,s_server_verify,verify_callback);
  		SSL_CTX_set_session_id_context(ctx2,(void*)&s_server_session_id_context,
  			sizeof s_server_session_id_context);
  
  		tlsextcbp.biodebug = bio_s_out;
  		SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
  		SSL_CTX_set_tlsext_servername_arg(ctx2, &tlsextcbp);
  		SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
  		SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
  		}
  #endif
  
  #ifndef OPENSSL_NO_SRP
  	if (srp_verifier_file != NULL)
  		{
  		p.vb = SRP_VBASE_new(srpuserseed);
  		if ((ret = SRP_VBASE_init(p.vb, srp_verifier_file)) != SRP_NO_ERROR)
  			{
  			BIO_printf(bio_err,
  					   "Cannot initialize SRP verifier file \"%s\":ret=%d\n",
  					   srp_verifier_file,ret);
  				goto end;
  			}
  		SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE,verify_callback);
  		SSL_CTX_set_srp_cb_arg(ctx, &p);  			
  		SSL_CTX_set_srp_username_callback(ctx, ssl_srp_server_param_cb);
  		}
  	else
  #endif
  	if (CAfile != NULL)
  		{
  		SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
  #ifndef OPENSSL_NO_TLSEXT
  		if (ctx2) 
  			SSL_CTX_set_client_CA_list(ctx2,SSL_load_client_CA_file(CAfile));
  #endif
  		}
  
  	BIO_printf(bio_s_out,"ACCEPT\n");
  	(void)BIO_flush(bio_s_out);
  	if (www)
  		do_server(port,socket_type,&accept_socket,www_body, context);
  	else
  		do_server(port,socket_type,&accept_socket,sv_body, context);
  	print_stats(bio_s_out,ctx);
  	ret=0;
  end:
  	if (ctx != NULL) SSL_CTX_free(ctx);
  	if (s_cert)
  		X509_free(s_cert);
  	if (s_dcert)
  		X509_free(s_dcert);
  	if (s_key)
  		EVP_PKEY_free(s_key);
  	if (s_dkey)
  		EVP_PKEY_free(s_dkey);
  	if (pass)
  		OPENSSL_free(pass);
  	if (dpass)
  		OPENSSL_free(dpass);
  	free_sessions();
  #ifndef OPENSSL_NO_TLSEXT
  	if (ctx2 != NULL) SSL_CTX_free(ctx2);
  	if (s_cert2)
  		X509_free(s_cert2);
  	if (s_key2)
  		EVP_PKEY_free(s_key2);
  #endif
  	if (bio_s_out != NULL)
  		{
          BIO_free(bio_s_out);
  		bio_s_out=NULL;
  		}
  	apps_shutdown();
  	OPENSSL_EXIT(ret);
  	}
  
  static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
  	{
  	BIO_printf(bio,"%4ld items in the session cache\n",
  		SSL_CTX_sess_number(ssl_ctx));
  	BIO_printf(bio,"%4ld client connects (SSL_connect())\n",
  		SSL_CTX_sess_connect(ssl_ctx));
  	BIO_printf(bio,"%4ld client renegotiates (SSL_connect())\n",
  		SSL_CTX_sess_connect_renegotiate(ssl_ctx));
  	BIO_printf(bio,"%4ld client connects that finished\n",
  		SSL_CTX_sess_connect_good(ssl_ctx));
  	BIO_printf(bio,"%4ld server accepts (SSL_accept())\n",
  		SSL_CTX_sess_accept(ssl_ctx));
  	BIO_printf(bio,"%4ld server renegotiates (SSL_accept())\n",
  		SSL_CTX_sess_accept_renegotiate(ssl_ctx));
  	BIO_printf(bio,"%4ld server accepts that finished\n",
  		SSL_CTX_sess_accept_good(ssl_ctx));
  	BIO_printf(bio,"%4ld session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
  	BIO_printf(bio,"%4ld session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
  	BIO_printf(bio,"%4ld session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
  	BIO_printf(bio,"%4ld callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
  	BIO_printf(bio,"%4ld cache full overflows (%ld allowed)\n",
  		SSL_CTX_sess_cache_full(ssl_ctx),
  		SSL_CTX_sess_get_cache_size(ssl_ctx));
  	}
  
  static int sv_body(char *hostname, int s, unsigned char *context)
  	{
  	char *buf=NULL;
  	fd_set readfds;
  	int ret=1,width;
  	int k,i;
  	unsigned long l;
  	SSL *con=NULL;
  	BIO *sbio;
  #ifndef OPENSSL_NO_KRB5
  	KSSL_CTX *kctx;
  #endif
  	struct timeval timeout;
  #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
  	struct timeval tv;
  #else
  	struct timeval *timeoutp;
  #endif
  
  	if ((buf=OPENSSL_malloc(bufsize)) == NULL)
  		{
  		BIO_printf(bio_err,"out of memory\n");
  		goto err;
  		}
  #ifdef FIONBIO	
  	if (s_nbio)
  		{
  		unsigned long sl=1;
  
  		if (!s_quiet)
  			BIO_printf(bio_err,"turning on non blocking io\n");
  		if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
  			ERR_print_errors(bio_err);
  		}
  #endif
  
  	if (con == NULL) {
  		con=SSL_new(ctx);
  #ifndef OPENSSL_NO_TLSEXT
  	if (s_tlsextdebug)
  		{
  		SSL_set_tlsext_debug_callback(con, tlsext_cb);
  		SSL_set_tlsext_debug_arg(con, bio_s_out);
  		}
  	if (s_tlsextstatus)
  		{
  		SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb);
  		tlscstatp.err = bio_err;
  		SSL_CTX_set_tlsext_status_arg(ctx, &tlscstatp);
  		}
  #endif
  #ifndef OPENSSL_NO_KRB5
  		if ((kctx = kssl_ctx_new()) != NULL)
                          {
  			SSL_set0_kssl_ctx(con, kctx);
                          kssl_ctx_setstring(kctx, KSSL_SERVICE, KRB5SVC);
                          kssl_ctx_setstring(kctx, KSSL_KEYTAB, KRB5KEYTAB);
                          }
  #endif	/* OPENSSL_NO_KRB5 */
  		if(context)
  		      SSL_set_session_id_context(con, context,
  						 strlen((char *)context));
  	}
  	SSL_clear(con);
  #if 0
  #ifdef TLSEXT_TYPE_opaque_prf_input
  	SSL_set_tlsext_opaque_prf_input(con, "Test server", 11);
  #endif
  #endif
  
  	if (SSL_version(con) == DTLS1_VERSION)
  		{
  
  		sbio=BIO_new_dgram(s,BIO_NOCLOSE);
  
  		if (enable_timeouts)
  			{
  			timeout.tv_sec = 0;
  			timeout.tv_usec = DGRAM_RCV_TIMEOUT;
  			BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
  			
  			timeout.tv_sec = 0;
  			timeout.tv_usec = DGRAM_SND_TIMEOUT;
  			BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
  			}
  
  		if (socket_mtu > 28)
  			{
  			SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
  			SSL_set_mtu(con, socket_mtu - 28);
  			}
  		else
  			/* want to do MTU discovery */
  			BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
  
          /* turn on cookie exchange */
          SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);
  		}
  	else
  		sbio=BIO_new_socket(s,BIO_NOCLOSE);
  
  	if (s_nbio_test)
  		{
  		BIO *test;
  
  		test=BIO_new(BIO_f_nbio_test());
  		sbio=BIO_push(test,sbio);
  		}
  #ifndef OPENSSL_NO_JPAKE
  	if(jpake_secret)
  		jpake_server_auth(bio_s_out, sbio, jpake_secret);
  #endif
  
  	SSL_set_bio(con,sbio,sbio);
  	SSL_set_accept_state(con);
  	/* SSL_set_fd(con,s); */
  
  	if (s_debug)
  		{
  		SSL_set_debug(con, 1);
  		BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
  		BIO_set_callback_arg(SSL_get_rbio(con),(char *)bio_s_out);
  		}
  	if (s_msg)
  		{
  		SSL_set_msg_callback(con, msg_cb);
  		SSL_set_msg_callback_arg(con, bio_s_out);
  		}
  #ifndef OPENSSL_NO_TLSEXT
  	if (s_tlsextdebug)
  		{
  		SSL_set_tlsext_debug_callback(con, tlsext_cb);
  		SSL_set_tlsext_debug_arg(con, bio_s_out);
  		}
  #endif
  
  	width=s+1;
  	for (;;)
  		{
  		int read_from_terminal;
  		int read_from_sslcon;
  
  		read_from_terminal = 0;
  		read_from_sslcon = SSL_pending(con);
  
  		if (!read_from_sslcon)
  			{
  			FD_ZERO(&readfds);
  #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined(OPENSSL_SYS_BEOS_R5)
  			openssl_fdset(fileno(stdin),&readfds);
  #endif
  			openssl_fdset(s,&readfds);
  			/* Note: under VMS with SOCKETSHR the second parameter is
  			 * currently of type (int *) whereas under other systems
  			 * it is (void *) if you don't have a cast it will choke
  			 * the compiler: if you do have a cast then you can either
  			 * go for (int *) or (void *).
  			 */
  #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
                          /* Under DOS (non-djgpp) and Windows we can't select on stdin: only
  			 * on sockets. As a workaround we timeout the select every
  			 * second and check for any keypress. In a proper Windows
  			 * application we wouldn't do this because it is inefficient.
  			 */
  			tv.tv_sec = 1;
  			tv.tv_usec = 0;
  			i=select(width,(void *)&readfds,NULL,NULL,&tv);
  			if((i < 0) || (!i && !_kbhit() ) )continue;
  			if(_kbhit())
  				read_from_terminal = 1;
  #elif defined(OPENSSL_SYS_BEOS_R5)
  			/* Under BeOS-R5 the situation is similar to DOS */
  			tv.tv_sec = 1;
  			tv.tv_usec = 0;
  			(void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
  			i=select(width,(void *)&readfds,NULL,NULL,&tv);
  			if ((i < 0) || (!i && read(fileno(stdin), buf, 0) < 0))
  				continue;
  			if (read(fileno(stdin), buf, 0) >= 0)
  				read_from_terminal = 1;
  			(void)fcntl(fileno(stdin), F_SETFL, 0);
  #else
  			if ((SSL_version(con) == DTLS1_VERSION) &&
  				DTLSv1_get_timeout(con, &timeout))
  				timeoutp = &timeout;
  			else
  				timeoutp = NULL;
  
  			i=select(width,(void *)&readfds,NULL,NULL,timeoutp);
  
  			if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
  				{
  				BIO_printf(bio_err,"TIMEOUT occured\n");
  				}
  
  			if (i <= 0) continue;
  			if (FD_ISSET(fileno(stdin),&readfds))
  				read_from_terminal = 1;
  #endif
  			if (FD_ISSET(s,&readfds))
  				read_from_sslcon = 1;
  			}
  		if (read_from_terminal)
  			{
  			if (s_crlf)
  				{
  				int j, lf_num;
  
  				i=raw_read_stdin(buf, bufsize/2);
  				lf_num = 0;
  				/* both loops are skipped when i <= 0 */
  				for (j = 0; j < i; j++)
  					if (buf[j] == '\n')
  						lf_num++;
  				for (j = i-1; j >= 0; j--)
  					{
  					buf[j+lf_num] = buf[j];
  					if (buf[j] == '\n')
  						{
  						lf_num--;
  						i++;
  						buf[j+lf_num] = '\r';
  						}
  					}
  				assert(lf_num == 0);
  				}
  			else
  				i=raw_read_stdin(buf,bufsize);
  			if (!s_quiet)
  				{
  				if ((i <= 0) || (buf[0] == 'Q'))
  					{
  					BIO_printf(bio_s_out,"DONE\n");
  					SHUTDOWN(s);
  					close_accept_socket();
  					ret= -11;
  					goto err;
  					}
  				if ((i <= 0) || (buf[0] == 'q'))
  					{
  					BIO_printf(bio_s_out,"DONE\n");
  					if (SSL_version(con) != DTLS1_VERSION)
                          SHUTDOWN(s);
  	/*				close_accept_socket();
  					ret= -11;*/
  					goto err;
  					}
  
  				if ((buf[0] == 'r') && 
  					((buf[1] == '\n') || (buf[1] == '\r')))
  					{
  					SSL_renegotiate(con);
  					i=SSL_do_handshake(con);
  					printf("SSL_do_handshake -> %d\n",i);
  					i=0; /*13; */
  					continue;
  					/* strcpy(buf,"server side RE-NEGOTIATE\n"); */
  					}
  				if ((buf[0] == 'R') &&
  					((buf[1] == '\n') || (buf[1] == '\r')))
  					{
  					SSL_set_verify(con,
  						SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
  					SSL_renegotiate(con);
  					i=SSL_do_handshake(con);
  					printf("SSL_do_handshake -> %d\n",i);
  					i=0; /* 13; */
  					continue;
  					/* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
  					}
  				if (buf[0] == 'P')
  					{
  					static const char *str="Lets print some clear text\n";
  					BIO_write(SSL_get_wbio(con),str,strlen(str));
  					}
  				if (buf[0] == 'S')
  					{
  					print_stats(bio_s_out,SSL_get_SSL_CTX(con));
  					}
  				}
  #ifdef CHARSET_EBCDIC
  			ebcdic2ascii(buf,buf,i);
  #endif
  			l=k=0;
  			for (;;)
  				{
  				/* should do a select for the write */
  #ifdef RENEG
  { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
  #endif
  				k=SSL_write(con,&(buf[l]),(unsigned int)i);
  				switch (SSL_get_error(con,k))
  					{
  				case SSL_ERROR_NONE:
  					break;
  				case SSL_ERROR_WANT_WRITE:
  				case SSL_ERROR_WANT_READ:
  				case SSL_ERROR_WANT_X509_LOOKUP:
  					BIO_printf(bio_s_out,"Write BLOCK\n");
  					break;
  				case SSL_ERROR_SYSCALL:
  				case SSL_ERROR_SSL:
  					BIO_printf(bio_s_out,"ERROR\n");
  					ERR_print_errors(bio_err);
  					ret=1;
  					goto err;
  					/* break; */
  				case SSL_ERROR_ZERO_RETURN:
  					BIO_printf(bio_s_out,"DONE\n");
  					ret=1;
  					goto err;
  					}
  				l+=k;
  				i-=k;
  				if (i <= 0) break;
  				}
  			}
  		if (read_from_sslcon)
  			{
  			if (!SSL_is_init_finished(con))
  				{
  				i=init_ssl_connection(con);
  				
  				if (i < 0)
  					{
  					ret=0;
  					goto err;
  					}
  				else if (i == 0)
  					{
  					ret=1;
  					goto err;
  					}
  				}
  			else
  				{
  again:	
  				i=SSL_read(con,(char *)buf,bufsize);
  				switch (SSL_get_error(con,i))
  					{
  				case SSL_ERROR_NONE:
  #ifdef CHARSET_EBCDIC
  					ascii2ebcdic(buf,buf,i);
  #endif
  					raw_write_stdout(buf,
  						(unsigned int)i);
  					if (SSL_pending(con)) goto again;
  					break;
  				case SSL_ERROR_WANT_WRITE:
  				case SSL_ERROR_WANT_READ:
  				case SSL_ERROR_WANT_X509_LOOKUP:
  					BIO_printf(bio_s_out,"Read BLOCK\n");
  					break;
  				case SSL_ERROR_SYSCALL:
  				case SSL_ERROR_SSL:
  					BIO_printf(bio_s_out,"ERROR\n");
  					ERR_print_errors(bio_err);
  					ret=1;
  					goto err;
  				case SSL_ERROR_ZERO_RETURN:
  					BIO_printf(bio_s_out,"DONE\n");
  					ret=1;
  					goto err;
  					}
  				}
  			}
  		}
  err:
  	if (con != NULL)
  		{
  		BIO_printf(bio_s_out,"shutting down SSL\n");
  #if 1
  		SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
  #else
  		SSL_shutdown(con);
  #endif
  		SSL_free(con);
  		}
  	BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
  	if (buf != NULL)
  		{
  		OPENSSL_cleanse(buf,bufsize);
  		OPENSSL_free(buf);
  		}
  	if (ret >= 0)
  		BIO_printf(bio_s_out,"ACCEPT\n");
  	return(ret);
  	}
  
  static void close_accept_socket(void)
  	{
  	BIO_printf(bio_err,"shutdown accept socket\n");
  	if (accept_socket >= 0)
  		{
  		SHUTDOWN2(accept_socket);
  		}
  	}
  
  static int init_ssl_connection(SSL *con)
  	{
  	int i;
  	const char *str;
  	X509 *peer;
  	long verify_error;
  	MS_STATIC char buf[BUFSIZ];
  #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
  	const unsigned char *next_proto_neg;
  	unsigned next_proto_neg_len;
  #endif
  #ifndef OPENSSL_NO_KRB5
  	char *client_princ;
  #endif
  
  	if ((i=SSL_accept(con)) <= 0)
  		{
  		if (BIO_sock_should_retry(i))
  			{
  			BIO_printf(bio_s_out,"DELAY\n");
  			return(1);
  			}
  
  		BIO_printf(bio_err,"ERROR\n");
  		verify_error=SSL_get_verify_result(con);
  		if (verify_error != X509_V_OK)
  			{
  			BIO_printf(bio_err,"verify error:%s\n",
  				X509_verify_cert_error_string(verify_error));
  			}
  		else
  			ERR_print_errors(bio_err);
  		return(0);
  		}
  
  	PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
  
  	peer=SSL_get_peer_certificate(con);
  	if (peer != NULL)
  		{
  		BIO_printf(bio_s_out,"Client certificate\n");
  		PEM_write_bio_X509(bio_s_out,peer);
  		X509_NAME_oneline(X509_get_subject_name(peer),buf,sizeof buf);
  		BIO_printf(bio_s_out,"subject=%s\n",buf);
  		X509_NAME_oneline(X509_get_issuer_name(peer),buf,sizeof buf);
  		BIO_printf(bio_s_out,"issuer=%s\n",buf);
  		X509_free(peer);
  		}
  
  	if (SSL_get_shared_ciphers(con,buf,sizeof buf) != NULL)
  		BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
  	str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
  	BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
  #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
  	SSL_get0_next_proto_negotiated(con, &next_proto_neg, &next_proto_neg_len);
  	if (next_proto_neg)
  		{
  		BIO_printf(bio_s_out,"NEXTPROTO is ");
  		BIO_write(bio_s_out, next_proto_neg, next_proto_neg_len);
  		BIO_printf(bio_s_out, "\n");
  		}
  #endif
  	if (SSL_cache_hit(con)) BIO_printf(bio_s_out,"Reused session-id\n");
  	if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
  		TLS1_FLAGS_TLS_PADDING_BUG)
  		BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
  #ifndef OPENSSL_NO_KRB5
  	client_princ = kssl_ctx_get0_client_princ(SSL_get0_kssl_ctx(con));
  	if (client_princ != NULL)
  		{
  		BIO_printf(bio_s_out,"Kerberos peer principal is %s\n",
  								client_princ);
  		}
  #endif /* OPENSSL_NO_KRB5 */
  	BIO_printf(bio_s_out, "Secure Renegotiation IS%s supported\n",
  		      SSL_get_secure_renegotiation_support(con) ? "" : " NOT");
  	return(1);
  	}
  
  #ifndef OPENSSL_NO_DH
  static DH *load_dh_param(const char *dhfile)
  	{
  	DH *ret=NULL;
  	BIO *bio;
  
  	if ((bio=BIO_new_file(dhfile,"r")) == NULL)
  		goto err;
  	ret=PEM_read_bio_DHparams(bio,NULL,NULL,NULL);
  err:
  	if (bio != NULL) BIO_free(bio);
  	return(ret);
  	}
  #endif
  
  #if 0
  static int load_CA(SSL_CTX *ctx, char *file)
  	{
  	FILE *in;
  	X509 *x=NULL;
  
  	if ((in=fopen(file,"r")) == NULL)
  		return(0);
  
  	for (;;)
  		{
  		if (PEM_read_X509(in,&x,NULL) == NULL)
  			break;
  		SSL_CTX_add_client_CA(ctx,x);
  		}
  	if (x != NULL) X509_free(x);
  	fclose(in);
  	return(1);
  	}
  #endif
  
  static int www_body(char *hostname, int s, unsigned char *context)
  	{
  	char *buf=NULL;
  	int ret=1;
  	int i,j,k,dot;
  	SSL *con;
  	const SSL_CIPHER *c;
  	BIO *io,*ssl_bio,*sbio;
  #ifndef OPENSSL_NO_KRB5
  	KSSL_CTX *kctx;
  #endif
  
  	buf=OPENSSL_malloc(bufsize);
  	if (buf == NULL) return(0);
  	io=BIO_new(BIO_f_buffer());
  	ssl_bio=BIO_new(BIO_f_ssl());
  	if ((io == NULL) || (ssl_bio == NULL)) goto err;
  
  #ifdef FIONBIO	
  	if (s_nbio)
  		{
  		unsigned long sl=1;
  
  		if (!s_quiet)
  			BIO_printf(bio_err,"turning on non blocking io\n");
  		if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
  			ERR_print_errors(bio_err);
  		}
  #endif
  
  	/* lets make the output buffer a reasonable size */
  	if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
  
  	if ((con=SSL_new(ctx)) == NULL) goto err;
  #ifndef OPENSSL_NO_TLSEXT
  		if (s_tlsextdebug)
  			{
  			SSL_set_tlsext_debug_callback(con, tlsext_cb);
  			SSL_set_tlsext_debug_arg(con, bio_s_out);
  			}
  #endif
  #ifndef OPENSSL_NO_KRB5
  	if ((kctx = kssl_ctx_new()) != NULL)
  		{
  		kssl_ctx_setstring(kctx, KSSL_SERVICE, KRB5SVC);
  		kssl_ctx_setstring(kctx, KSSL_KEYTAB, KRB5KEYTAB);
  		}
  #endif	/* OPENSSL_NO_KRB5 */
  	if(context) SSL_set_session_id_context(con, context,
  					       strlen((char *)context));
  
  	sbio=BIO_new_socket(s,BIO_NOCLOSE);
  	if (s_nbio_test)
  		{
  		BIO *test;
  
  		test=BIO_new(BIO_f_nbio_test());
  		sbio=BIO_push(test,sbio);
  		}
  	SSL_set_bio(con,sbio,sbio);
  	SSL_set_accept_state(con);
  	/* SSL_set_fd(con,s); */
  	BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
  	BIO_push(io,ssl_bio);
  #ifdef CHARSET_EBCDIC
  	io = BIO_push(BIO_new(BIO_f_ebcdic_filter()),io);
  #endif
  
  	if (s_debug)
  		{
  		SSL_set_debug(con, 1);
  		BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
  		BIO_set_callback_arg(SSL_get_rbio(con),(char *)bio_s_out);
  		}
  	if (s_msg)
  		{
  		SSL_set_msg_callback(con, msg_cb);
  		SSL_set_msg_callback_arg(con, bio_s_out);
  		}
  
  	for (;;)
  		{
  		if (hack)
  			{
  			i=SSL_accept(con);
  
  			switch (SSL_get_error(con,i))
  				{
  			case SSL_ERROR_NONE:
  				break;
  			case SSL_ERROR_WANT_WRITE:
  			case SSL_ERROR_WANT_READ:
  			case SSL_ERROR_WANT_X509_LOOKUP:
  				continue;
  			case SSL_ERROR_SYSCALL:
  			case SSL_ERROR_SSL:
  			case SSL_ERROR_ZERO_RETURN:
  				ret=1;
  				goto err;
  				/* break; */
  				}
  
  			SSL_renegotiate(con);
  			SSL_write(con,NULL,0);
  			}
  
  		i=BIO_gets(io,buf,bufsize-1);
  		if (i < 0) /* error */
  			{
  			if (!BIO_should_retry(io))
  				{
  				if (!s_quiet)
  					ERR_print_errors(bio_err);
  				goto err;
  				}
  			else
  				{
  				BIO_printf(bio_s_out,"read R BLOCK\n");
  #if defined(OPENSSL_SYS_NETWARE)
              delay(1000);
  #elif !defined(OPENSSL_SYS_MSDOS) && !defined(__DJGPP__)
  				sleep(1);
  #endif
  				continue;
  				}
  			}
  		else if (i == 0) /* end of input */
  			{
  			ret=1;
  			goto end;
  			}
  
  		/* else we have data */
  		if (	((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
  			((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
  			{
  			char *p;
  			X509 *peer;
  			STACK_OF(SSL_CIPHER) *sk;
  			static const char *space="                          ";
  
  		if (www == 1 && strncmp("GET /reneg", buf, 10) == 0)
  			{
  			if (strncmp("GET /renegcert", buf, 14) == 0)
  				SSL_set_verify(con,
  				SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
  			i=SSL_renegotiate(con);
  			BIO_printf(bio_s_out, "SSL_renegotiate -> %d\n",i);
  			i=SSL_do_handshake(con);
  			if (i <= 0)
  				{
  				BIO_printf(bio_s_out, "SSL_do_handshake() Retval %d\n", SSL_get_error(con, i));
  				ERR_print_errors(bio_err);
  				goto err;
  				}
  			/* EVIL HACK! */
  			SSL_set_state(con, SSL_ST_ACCEPT);
  			i=SSL_do_handshake(con);
  			BIO_printf(bio_s_out, "SSL_do_handshake -> %d\n",i);
  			if (i <= 0)
  				{
  				BIO_printf(bio_s_out, "SSL_do_handshake() Retval %d\n", SSL_get_error(con, i));
  				ERR_print_errors(bio_err);
  				goto err;
  				}
  			}
  
  			BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
  			BIO_puts(io,"<HTML><BODY BGCOLOR=\"#ffffff\">\n");
  			BIO_puts(io,"<pre>\n");
  /*			BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
  			BIO_puts(io,"\n");
  			for (i=0; i<local_argc; i++)
  				{
  				BIO_puts(io,local_argv[i]);
  				BIO_write(io," ",1);
  				}
  			BIO_puts(io,"\n");
  
  			BIO_printf(io,
  				"Secure Renegotiation IS%s supported\n",
  		      		SSL_get_secure_renegotiation_support(con) ?
  							"" : " NOT");
  
  			/* The following is evil and should not really
  			 * be done */
  			BIO_printf(io,"Ciphers supported in s_server binary\n");
  			sk=SSL_get_ciphers(con);
  			j=sk_SSL_CIPHER_num(sk);
  			for (i=0; i<j; i++)
  				{
  				c=sk_SSL_CIPHER_value(sk,i);
  				BIO_printf(io,"%-11s:%-25s",
  					SSL_CIPHER_get_version(c),
  					SSL_CIPHER_get_name(c));
  				if ((((i+1)%2) == 0) && (i+1 != j))
  					BIO_puts(io,"\n");
  				}
  			BIO_puts(io,"\n");
  			p=SSL_get_shared_ciphers(con,buf,bufsize);
  			if (p != NULL)
  				{
  				BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
  				j=i=0;
  				while (*p)
  					{
  					if (*p == ':')
  						{
  						BIO_write(io,space,26-j);
  						i++;
  						j=0;
  						BIO_write(io,((i%3)?" ":"\n"),1);
  						}
  					else
  						{
  						BIO_write(io,p,1);
  						j++;
  						}
  					p++;
  					}
  				BIO_puts(io,"\n");
  				}
  			BIO_printf(io,(SSL_cache_hit(con)
  				?"---\nReused, "
  				:"---\nNew, "));
  			c=SSL_get_current_cipher(con);
  			BIO_printf(io,"%s, Cipher is %s\n",
  				SSL_CIPHER_get_version(c),
  				SSL_CIPHER_get_name(c));
  			SSL_SESSION_print(io,SSL_get_session(con));
  			BIO_printf(io,"---\n");
  			print_stats(io,SSL_get_SSL_CTX(con));
  			BIO_printf(io,"---\n");
  			peer=SSL_get_peer_certificate(con);
  			if (peer != NULL)
  				{
  				BIO_printf(io,"Client certificate\n");
  				X509_print(io,peer);
  				PEM_write_bio_X509(io,peer);
  				}
  			else
  				BIO_puts(io,"no client certificate available\n");
  			BIO_puts(io,"</BODY></HTML>\r\n\r\n");
  			break;
  			}
  		else if ((www == 2 || www == 3)
                           && (strncmp("GET /",buf,5) == 0))
  			{
  			BIO *file;
  			char *p,*e;
  			static const char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
  
  			/* skip the '/' */
  			p= &(buf[5]);
  
  			dot = 1;
  			for (e=p; *e != '\0'; e++)
  				{
  				if (e[0] == ' ')
  					break;
  
  				switch (dot)
  					{
  				case 1:
  					dot = (e[0] == '.') ? 2 : 0;
  					break;
  				case 2:
  					dot = (e[0] == '.') ? 3 : 0;
  					break;
  				case 3:
  					dot = (e[0] == '/') ? -1 : 0;
  					break;
  					}
  				if (dot == 0)
  					dot = (e[0] == '/') ? 1 : 0;
  				}
  			dot = (dot == 3) || (dot == -1); /* filename contains ".." component */
  
  			if (*e == '\0')
  				{
  				BIO_puts(io,text);
  				BIO_printf(io,"'%s' is an invalid file name\r\n",p);
  				break;
  				}
  			*e='\0';
  
  			if (dot)
  				{
  				BIO_puts(io,text);
  				BIO_printf(io,"'%s' contains '..' reference\r\n",p);
  				break;
  				}
  
  			if (*p == '/')
  				{
  				BIO_puts(io,text);
  				BIO_printf(io,"'%s' is an invalid path\r\n",p);
  				break;
  				}
  
  #if 0
  			/* append if a directory lookup */
  			if (e[-1] == '/')
  				strcat(p,"index.html");
  #endif
  
  			/* if a directory, do the index thang */
  			if (app_isdir(p)>0)
  				{
  #if 0 /* must check buffer size */
  				strcat(p,"/index.html");
  #else
  				BIO_puts(io,text);
  				BIO_printf(io,"'%s' is a directory\r\n",p);
  				break;
  #endif
  				}
  
  			if ((file=BIO_new_file(p,"r")) == NULL)
  				{
  				BIO_puts(io,text);
  				BIO_printf(io,"Error opening '%s'\r\n",p);
  				ERR_print_errors(io);
  				break;
  				}
  
  			if (!s_quiet)
  				BIO_printf(bio_err,"FILE:%s\n",p);
  
                          if (www == 2)
                                  {
                                  i=strlen(p);
                                  if (	((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
                                          ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
                                          ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
                                          BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
                                  else
                                          BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
                                  }
  			/* send the file */
  			for (;;)
  				{
  				i=BIO_read(file,buf,bufsize);
  				if (i <= 0) break;
  
  #ifdef RENEG
  				total_bytes+=i;
  				fprintf(stderr,"%d\n",i);
  				if (total_bytes > 3*1024)
  					{
  					total_bytes=0;
  					fprintf(stderr,"RENEGOTIATE\n");
  					SSL_renegotiate(con);
  					}
  #endif
  
  				for (j=0; j<i; )
  					{
  #ifdef RENEG
  { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
  #endif
  					k=BIO_write(io,&(buf[j]),i-j);
  					if (k <= 0)
  						{
  						if (!BIO_should_retry(io))
  							goto write_error;
  						else
  							{
  							BIO_printf(bio_s_out,"rwrite W BLOCK\n");
  							}
  						}
  					else
  						{
  						j+=k;
  						}
  					}
  				}
  write_error:
  			BIO_free(file);
  			break;
  			}
  		}
  
  	for (;;)
  		{
  		i=(int)BIO_flush(io);
  		if (i <= 0)
  			{
  			if (!BIO_should_retry(io))
  				break;
  			}
  		else
  			break;
  		}
  end:
  #if 1
  	/* make sure we re-use sessions */
  	SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
  #else
  	/* This kills performance */
  /*	SSL_shutdown(con); A shutdown gets sent in the
   *	BIO_free_all(io) procession */
  #endif
  
  err:
  
  	if (ret >= 0)
  		BIO_printf(bio_s_out,"ACCEPT\n");
  
  	if (buf != NULL) OPENSSL_free(buf);
  	if (io != NULL) BIO_free_all(io);
  /*	if (ssl_bio != NULL) BIO_free(ssl_bio);*/
  	return(ret);
  	}
  
  #ifndef OPENSSL_NO_RSA
  static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
  	{
  	BIGNUM *bn = NULL;
  	static RSA *rsa_tmp=NULL;
  
  	if (!rsa_tmp && ((bn = BN_new()) == NULL))
  		BIO_printf(bio_err,"Allocation error in generating RSA key\n");
  	if (!rsa_tmp && bn)
  		{
  		if (!s_quiet)
  			{
  			BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
  			(void)BIO_flush(bio_err);
  			}
  		if(!BN_set_word(bn, RSA_F4) || ((rsa_tmp = RSA_new()) == NULL) ||
  				!RSA_generate_key_ex(rsa_tmp, keylength, bn, NULL))
  			{
  			if(rsa_tmp) RSA_free(rsa_tmp);
  			rsa_tmp = NULL;
  			}
  		if (!s_quiet)
  			{
  			BIO_printf(bio_err,"\n");
  			(void)BIO_flush(bio_err);
  			}
  		BN_free(bn);
  		}
  	return(rsa_tmp);
  	}
  #endif
  
  #define MAX_SESSION_ID_ATTEMPTS 10
  static int generate_session_id(const SSL *ssl, unsigned char *id,
  				unsigned int *id_len)
  	{
  	unsigned int count = 0;
  	do	{
  		RAND_pseudo_bytes(id, *id_len);
  		/* Prefix the session_id with the required prefix. NB: If our
  		 * prefix is too long, clip it - but there will be worse effects
  		 * anyway, eg. the server could only possibly create 1 session
  		 * ID (ie. the prefix!) so all future session negotiations will
  		 * fail due to conflicts. */
  		memcpy(id, session_id_prefix,
  			(strlen(session_id_prefix) < *id_len) ?
  			strlen(session_id_prefix) : *id_len);
  		}
  	while(SSL_has_matching_session_id(ssl, id, *id_len) &&
  		(++count < MAX_SESSION_ID_ATTEMPTS));
  	if(count >= MAX_SESSION_ID_ATTEMPTS)
  		return 0;
  	return 1;
  	}
  
  /* By default s_server uses an in-memory cache which caches SSL_SESSION
   * structures without any serialisation. This hides some bugs which only
   * become apparent in deployed servers. By implementing a basic external
   * session cache some issues can be debugged using s_server.
   */
  
  typedef struct simple_ssl_session_st
  	{
  	unsigned char *id;
  	unsigned int idlen;
  	unsigned char *der;
  	int derlen;
  	struct simple_ssl_session_st *next;
  	} simple_ssl_session;
  
  static simple_ssl_session *first = NULL;
  
  static int add_session(SSL *ssl, SSL_SESSION *session)
  	{
  	simple_ssl_session *sess;
  	unsigned char *p;
  
  	sess = OPENSSL_malloc(sizeof(simple_ssl_session));
  
  	sess->idlen = SSL_SESSION_get_id_len(session);
  	sess->derlen = i2d_SSL_SESSION(session, NULL);
  
  	sess->id = BUF_memdup(SSL_SESSION_get0_id(session), sess->idlen);
  
  	sess->der = OPENSSL_malloc(sess->derlen);
  	p = sess->der;
  	i2d_SSL_SESSION(session, &p);
  
  	sess->next = first;
  	first = sess;
  	BIO_printf(bio_err, "New session added to external cache\n");
  	return 0;
  	}
  
  static SSL_SESSION *get_session(SSL *ssl, unsigned char *id, int idlen,
  					int *do_copy)
  	{
  	simple_ssl_session *sess;
  	*do_copy = 0;
  	for (sess = first; sess; sess = sess->next)
  		{
  		if (idlen == (int)sess->idlen && !memcmp(sess->id, id, idlen))
  			{
  			const unsigned char *p = sess->der;
  			BIO_printf(bio_err, "Lookup session: cache hit\n");
  			return d2i_SSL_SESSION(NULL, &p, sess->derlen);
  			}
  		}
  	BIO_printf(bio_err, "Lookup session: cache miss\n");
  	return NULL;
  	}
  
  static void del_session(SSL_CTX *sctx, SSL_SESSION *session)
  	{
  	simple_ssl_session *sess, *prev = NULL;
  	const unsigned char *id = SSL_SESSION_get0_id(session);
  	unsigned int idlen = SSL_SESSION_get_id_len(session);
  	for (sess = first; sess; sess = sess->next)
  		{
  		if (idlen == sess->idlen && !memcmp(sess->id, id, idlen))
  			{
  			if(prev)
  				prev->next = sess->next;
  			else
  				first = sess->next;
  			OPENSSL_free(sess->id);
  			OPENSSL_free(sess->der);
  			OPENSSL_free(sess);
  			return;
  			}
  		prev = sess;
  		}
  	}
  
  static void init_session_cache_ctx(SSL_CTX *sctx)
  	{
  	SSL_CTX_set_session_cache_mode(sctx,
  			SSL_SESS_CACHE_NO_INTERNAL|SSL_SESS_CACHE_SERVER);
  	SSL_CTX_sess_set_new_cb(sctx, add_session);
          SSL_CTX_sess_set_get_cb(sctx, get_session);
          SSL_CTX_sess_set_remove_cb(sctx, del_session);
  	}
  
  static void free_sessions(void)
  	{
  	simple_ssl_session *sess, *tsess;
  	for (sess = first; sess;)
  		{
  		OPENSSL_free(sess->id);
  		OPENSSL_free(sess->der);
  		tsess = sess;
  		sess = sess->next;
  		OPENSSL_free(tsess);
  		}
  	first = NULL;
  	}
  	
  
  
  
  
  
  
  	
  
  
  