/* 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.
 */

#define _BSD_SOURCE 1		/* Or gethostname won't be declared properly
				   on Linux and GNU platforms. */

#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
#define _XOPEN_SOURCE 500	/* Or isascii won't be declared properly on
				   VMS (at least with DECompHP C).  */
#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>

#define _XOPEN_SOURCE_EXTENDED	1 /* 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...
				  */

#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

/* 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;

#ifndef OPENSSL_NO_NEXTPROTONEG
/* Note that this code assumes that this is only a one element list: */
static const char NEXT_PROTO_STRING[] = "\x09testproto";
int npn_client = 0;
int npn_server = 0;
int npn_server_reject = 0;

static int cb_client_npn(SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
	{
	/* This callback only returns the protocol string, rather than a length
	   prefixed set. We assume that NEXT_PROTO_STRING is a one element list and
	   remove the first byte to chop off the length prefix. */
	*out = (unsigned char*) NEXT_PROTO_STRING + 1;
	*outlen = sizeof(NEXT_PROTO_STRING) - 2;
	return SSL_TLSEXT_ERR_OK;
	}

static int cb_server_npn(SSL *s, const unsigned char **data, unsigned int *len, void *arg)
	{
	*data = (const unsigned char *) NEXT_PROTO_STRING;
	*len = sizeof(NEXT_PROTO_STRING) - 1;
	return SSL_TLSEXT_ERR_OK;
	}

static int cb_server_rejects_npn(SSL *s, const unsigned char **data, unsigned int *len, void *arg)
	{
	return SSL_TLSEXT_ERR_NOACK;
	}

static int verify_npn(SSL *client, SSL *server)
	{
	const unsigned char *client_s;
	unsigned client_len;
	const unsigned char *server_s;
	unsigned server_len;

	SSL_get0_next_proto_negotiated(client, &client_s, &client_len);
	SSL_get0_next_proto_negotiated(server, &server_s, &server_len);

	if (client_len)
		{
		BIO_printf(bio_stdout, "Client NPN: ");
		BIO_write(bio_stdout, client_s, client_len);
		BIO_printf(bio_stdout, "\n");
		}

	if (server_len)
		{
		BIO_printf(bio_stdout, "Server NPN: ");
		BIO_write(bio_stdout, server_s, server_len);
		BIO_printf(bio_stdout, "\n");
		}

	/* If an NPN string was returned, it must be the protocol that we
	 * expected to negotiate. */
	if (client_len && (client_len != sizeof(NEXT_PROTO_STRING) - 2 ||
			   memcmp(client_s, NEXT_PROTO_STRING + 1, client_len)))
		return -1;
	if (server_len && (server_len != sizeof(NEXT_PROTO_STRING) - 2 ||
			   memcmp(server_s, NEXT_PROTO_STRING + 1, server_len)))
		return -1;

	if (!npn_client && client_len)
		return -1;
	if (!npn_server && server_len)
		return -1;
	if (npn_server_reject && server_len)
		return -1;
	if (npn_client && npn_server && (!client_len || !server_len))
		return -1;

	return 0;
	}
#endif

static const char *alpn_client;
static const char *alpn_server;
static const char *alpn_expected;
static unsigned char *alpn_selected;

/* 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 termianted 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;

	protos = next_protos_parse(&protos_len, alpn_server);
	if (protos == NULL)
		{
		fprintf(stderr, "failed to parser ALPN server protocol string: %s\n", alpn_server);
		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: '%s'\n", alpn_client, alpn_server);
	return -1;
	}

#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_cb(SSL* s, unsigned short ext_type,
			     const unsigned char* in, unsigned short 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_first_cb(SSL *s, unsigned short ext_type,
				     const unsigned char **out,
				     unsigned short *outlen, int *al, void *arg)
	{
	if (ext_type != CUSTOM_EXT_TYPE_0)
		custom_ext_error = 1;
	return -1;  /* Don't send an extension */
	}

static int custom_ext_0_cli_second_cb(SSL *s, unsigned short ext_type,
				      const unsigned char *in,
				      unsigned short inlen, int *al,
				      void *arg)
	{
	return 1;
	}

static int custom_ext_1_cli_first_cb(SSL *s, unsigned short ext_type,
				     const unsigned char **out,
				     unsigned short *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_second_cb(SSL *s, unsigned short ext_type,
				      const unsigned char *in,
				      unsigned short inlen, int *al,
				      void *arg)
	{
	return 1;
	}

static int custom_ext_2_cli_first_cb(SSL *s, unsigned short ext_type,
				     const unsigned char **out,
				     unsigned short *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_second_cb(SSL *s, unsigned short ext_type,
				      const unsigned char *in,
				      unsigned short 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_first_cb(SSL *s, unsigned short ext_type,
				     const unsigned char **out,
				     unsigned short *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_second_cb(SSL *s, unsigned short ext_type,
				      const unsigned char *in,
				      unsigned short 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_first_cb returns -1 - the server won't receive a callback for this extension */
static int custom_ext_0_srv_first_cb(SSL *s, unsigned short ext_type,
				     const unsigned char *in,
				     unsigned short inlen, int *al,
				     void *arg)
	{
	return 1;
	}

/* 'generate' callbacks are always called, even if the 'receive' callback isn't called */
static int custom_ext_0_srv_second_cb(SSL *s, unsigned short ext_type,
				      const unsigned char **out,
				      unsigned short *outlen, int *al, void *arg)
	{
        return -1; /* Don't send an extension */
	}

static int custom_ext_1_srv_first_cb(SSL *s, unsigned short ext_type,
				const unsigned char *in,
				unsigned short 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_second_cb(SSL *s, unsigned short ext_type,
				      const unsigned char **out,
				      unsigned short *outlen, int *al, void *arg)
	{
	return -1; /* Don't send an extension */
	}

static int custom_ext_2_srv_first_cb(SSL *s, unsigned short ext_type,
				     const unsigned char *in,
				     unsigned short 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_second_cb(SSL *s, unsigned short ext_type,
				      const unsigned char **out,
				      unsigned short *outlen, int *al, void *arg)
	{
	*out = NULL;
	*outlen = 0;
	return 1; /* Send empty extension */
	}

static int custom_ext_3_srv_first_cb(SSL *s, unsigned short ext_type,
				     const unsigned char *in,
				     unsigned short 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_second_cb(SSL *s, unsigned short ext_type,
				      const unsigned char **out,
				      unsigned short *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> - experssion 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," -dhe1024      - use 1024 bit key (safe prime) for DHE\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
	fprintf(stderr," -ssl3         - use SSLv3\n");
#endif
#ifndef OPENSSL_NO_TLS1
	fprintf(stderr," -tls1         - use TLSv1\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");
#ifndef OPENSSL_NO_NEXTPROTONEG
	fprintf(stderr," -npn_client - have client side offer NPN\n");
	fprintf(stderr," -npn_server - have server side offer NPN\n");
	fprintf(stderr," -npn_server_reject - have server reject NPN\n");
#endif
	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_expected <string> - the ALPN protocol that should be negotiated\n");
	}

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 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 *s_ctx=NULL;
	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 dhe1024 = 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

	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 exitting 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,"-dhe1024") == 0)
			{
#ifndef OPENSSL_NO_DH
			dhe1024=1;
#else
			fprintf(stderr,"ignoring -dhe1024, since I'm compiled without DH\n");
#endif
			}
		else if	(strcmp(*argv,"-dhe1024dsa") == 0)
			{
#ifndef OPENSSL_NO_DH
			dhe1024dsa=1;
#else
			fprintf(stderr,"ignoring -dhe1024, 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)
			ssl2=1;
		else if	(strcmp(*argv,"-tls1") == 0)
			tls1=1;
		else if	(strcmp(*argv,"-ssl3") == 0)
			ssl3=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;
			}
#ifndef OPENSSL_NO_COMP
		else if	(strcmp(*argv,"-zlib") == 0)
			{
			comp = COMP_ZLIB;
			}
		else if	(strcmp(*argv,"-rle") == 0)
			{
			comp = COMP_RLE;
			}
#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;
			}
#ifndef OPENSSL_NO_NEXTPROTONEG
		else if (strcmp(*argv,"-npn_client") == 0)
			{
			npn_client = 1;
			}
		else if (strcmp(*argv,"-npn_server") == 0)
			{
			npn_server = 1;
			}
		else if (strcmp(*argv,"-npn_server_reject") == 0)
			{
			npn_server_reject = 1;
			}
#endif
		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)
			{
			if (--argc < 1) goto bad;
			alpn_server = *(++argv);
			}
		else if (strcmp(*argv,"-alpn_expected") == 0)
			{
			if (--argc < 1) goto bad;
			alpn_expected = *(++argv);
			}
		else
			{
			fprintf(stderr,"unknown option %s\n",*argv);
			badop=1;
			break;
			}
		argc--;
		argv++;
		}
	if (badop)
		{
bad:
		sv_usage();
		goto end;
		}

	if (test_cipherlist == 1)
		{
		/* ensure that the cipher list are correctly sorted and exit */
		if (do_test_cipherlist() == 0)
			EXIT(1);
		ret = 0;
		goto end;
		}

	if (!ssl2 && !ssl3 && !tls1 && 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, -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

#if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
	if (ssl2)
		meth=SSLv2_method();
	else 
	if (tls1)
		meth=TLSv1_method();
	else
	if (ssl3)
		meth=SSLv3_method();
	else
		meth=SSLv23_method();
#else
#ifdef OPENSSL_NO_SSL2
	if (tls1)
		meth=TLSv1_method();
	else
	if (ssl3)
		meth=SSLv3_method();
	else
		meth=SSLv23_method();
#else
	meth=SSLv2_method();
#endif
#endif

	c_ctx=SSL_CTX_new(meth);
	s_ctx=SSL_CTX_new(meth);
	if ((c_ctx == NULL) || (s_ctx == NULL))
		{
		ERR_print_errors(bio_err);
		goto end;
		}
	/* Since we will use low security ciphersuites and keys for
	 * testing set security level to zero.
	 */
	SSL_CTX_set_security_level(c_ctx, 0);
	SSL_CTX_set_security_level(s_ctx, 0);

	if (cipher != NULL)
		{
		SSL_CTX_set_cipher_list(c_ctx,cipher);
		SSL_CTX_set_cipher_list(s_ctx,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);
			dh=get_dh1024dsa();
			}
		else if (dhe1024)
			dh=get_dh1024();
		else
			dh=get_dh512();
		SSL_CTX_set_tmp_dh(s_ctx,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
#ifdef OPENSSL_NO_EC2M
			nid = NID_X9_62_prime256v1;
#else
			nid = NID_sect163r2;
#endif

		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_options(s_ctx, 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);
#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_arg(c_ctx, &co1); /* or &co2 or NULL */
	SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(s_ctx, &so1); /* or &so2 or NULL */
#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 (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(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);
		}
	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);
	}

	/* 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);
		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;
			}
#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_srp_cb_arg(s_ctx, &srp_server_arg);
		SSL_CTX_set_srp_username_callback(s_ctx, ssl_srp_server_param_cb);
		}
#endif

#ifndef OPENSSL_NO_NEXTPROTONEG
	if (npn_client)
		{
		SSL_CTX_set_next_proto_select_cb(c_ctx, cb_client_npn, NULL);
		}
	if (npn_server)
		{
		if (npn_server_reject)
			{
			BIO_printf(bio_err, "Can't have both -npn_server and -npn_server_reject\n");
			goto end;
			}
		SSL_CTX_set_next_protos_advertised_cb(s_ctx, cb_server_npn, NULL);
		}
	if (npn_server_reject)
		{
		SSL_CTX_set_next_protos_advertised_cb(s_ctx, cb_server_rejects_npn, NULL);
		}
#endif

	if (serverinfo_sct)
		SSL_CTX_set_custom_cli_ext(c_ctx, SCT_EXT_TYPE, NULL, 
					   serverinfo_cli_cb, NULL);
	if (serverinfo_tack)
		SSL_CTX_set_custom_cli_ext(c_ctx, TACK_EXT_TYPE, NULL,
					   serverinfo_cli_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 (custom_ext)
		{
		SSL_CTX_set_custom_cli_ext(c_ctx, CUSTOM_EXT_TYPE_0, 
					   custom_ext_0_cli_first_cb, 
					   custom_ext_0_cli_second_cb, NULL);
		SSL_CTX_set_custom_cli_ext(c_ctx, CUSTOM_EXT_TYPE_1, 
					   custom_ext_1_cli_first_cb, 
					   custom_ext_1_cli_second_cb, NULL);
		SSL_CTX_set_custom_cli_ext(c_ctx, CUSTOM_EXT_TYPE_2, 
					   custom_ext_2_cli_first_cb, 
					   custom_ext_2_cli_second_cb, NULL);
		SSL_CTX_set_custom_cli_ext(c_ctx, CUSTOM_EXT_TYPE_3, 
					   custom_ext_3_cli_first_cb, 
					   custom_ext_3_cli_second_cb, NULL);


		SSL_CTX_set_custom_srv_ext(s_ctx, CUSTOM_EXT_TYPE_0, 
					   custom_ext_0_srv_first_cb, 
					   custom_ext_0_srv_second_cb, NULL);
		SSL_CTX_set_custom_srv_ext(s_ctx, CUSTOM_EXT_TYPE_1, 
					   custom_ext_1_srv_first_cb, 
					   custom_ext_1_srv_second_cb, NULL);
		SSL_CTX_set_custom_srv_ext(s_ctx, CUSTOM_EXT_TYPE_2, 
					   custom_ext_2_srv_first_cb, 
					   custom_ext_2_srv_second_cb, NULL);
		SSL_CTX_set_custom_srv_ext(s_ctx, CUSTOM_EXT_TYPE_3, 
					   custom_ext_3_srv_first_cb, 
					   custom_ext_3_srv_second_cb, NULL);
		}

	if (alpn_server)
		SSL_CTX_set_alpn_select_cb(s_ctx, cb_server_alpn, NULL);

	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);
		}

	c_ssl=SSL_new(c_ctx);
	s_ssl=SSL_new(s_ctx);

#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
		}

	SSL_free(s_ssl);
	SSL_free(c_ssl);

end:
	if (s_ctx != NULL) SSL_CTX_free(s_ctx);
	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: ");
#ifndef OPENSSL_NO_NEXTPROTONEG
	if (verify_npn(c_ssl, s_ssl) < 0)
		{
		ret = 1;
		goto end;
		}
#endif
	if (verify_serverinfo() < 0)
		{
		ret = 1;
		goto err;
		}
	if (verify_alpn(c_ssl, s_ssl) < 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);
			break;
			}
		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: ");
#ifndef OPENSSL_NO_NEXTPROTONEG
	if (verify_npn(c_ssl, s_ssl) < 0)
		{
		ret = 1;
		goto err;
		}
#endif
	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, ...)
	{
	static const char indentation[] =
		">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
		">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"; /* That's 80 > */
	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)
	{
	int i = 0;
	const SSL_METHOD *meth;
	const SSL_CIPHER *ci, *tci = NULL;

#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;
	}