/* apps/ciphers.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.]

  */

 #include <stdio.h>

 #include <stdlib.h>

 #include <string.h>

 #ifdef OPENSSL_NO_STDIO

 #define APPS_WIN16

 #endif

 #include "apps.h"

 #include <openssl/err.h>

 #include <openssl/ssl.h>

 #undef PROG

 #define PROG	ciphers_main

 static const char *ciphers_usage[]={

 "usage: ciphers args\n",

 " -v          - verbose mode, a textual listing of the ciphers in SSLeay\n",

 " -ssl2       - SSL2 mode\n",

 " -ssl3       - SSL3 mode\n",

 " -tls1       - TLS1 mode\n",

 NULL

 };

 int MAIN(int, char **);

 int MAIN(int argc, char **argv)

 	{

 	int ret=1,i;

 	int verbose=0;

 	const char **pp;

 	const char *p;

 	int badops=0;

 	SSL_CTX *ctx=NULL;

 	SSL *ssl=NULL;

 	char *ciphers=NULL;

 	SSL_METHOD *meth=NULL;

 	STACK_OF(SSL_CIPHER) *sk;

 	char buf[512];

 	BIO *STDout=NULL;

 #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();

 #endif

 	apps_startup();

 	if (bio_err == NULL)

 	bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);

 	STDout=BIO_new_fp(stdout,BIO_NOCLOSE);

 #ifdef OPENSSL_SYS_VMS

 	{

 	BIO *tmpbio = BIO_new(BIO_f_linebuffer());

 	STDout = BIO_push(tmpbio, STDout);

 	}

 #endif

 	argc--;

 	argv++;

 	while (argc >= 1)

 		{

 		if (strcmp(*argv,"-v") == 0)

 			verbose=1;

 #ifndef OPENSSL_NO_SSL2

 		else if (strcmp(*argv,"-ssl2") == 0)

 			meth=SSLv2_client_method();

 #endif

 #ifndef OPENSSL_NO_SSL3

 		else if (strcmp(*argv,"-ssl3") == 0)

 			meth=SSLv3_client_method();

 #endif

 #ifndef OPENSSL_NO_TLS1

 		else if (strcmp(*argv,"-tls1") == 0)

 			meth=TLSv1_client_method();

 #endif

 		else if ((strncmp(*argv,"-h",2) == 0) ||

 			 (strcmp(*argv,"-?") == 0))

 			{

 			badops=1;

 			break;

 			}

 		else

 			{

 			ciphers= *argv;

 			}

 		argc--;

 		argv++;

 		}

 	if (badops)

 		{

 		for (pp=ciphers_usage; (*pp != NULL); pp++)

 			BIO_printf(bio_err,"%s",*pp);

 		goto end;

 		}

 	OpenSSL_add_ssl_algorithms();

 	ctx=SSL_CTX_new(meth);

 	if (ctx == NULL) goto err;

 	if (ciphers != NULL) {

 		if(!SSL_CTX_set_cipher_list(ctx,ciphers)) {

 			BIO_printf(bio_err, "Error in cipher list\n");

 			goto err;

 		}

 	}

 	ssl=SSL_new(ctx);

 	if (ssl == NULL) goto err;

 	if (!verbose)

 		{

 		for (i=0; ; i++)

 			{

 			p=SSL_get_cipher_list(ssl,i);

 			if (p == NULL) break;

 			if (i != 0) BIO_printf(STDout,":");

 			BIO_printf(STDout,"%s",p);

 			}

 		BIO_printf(STDout,"\n");

 		}

 	else

 		{

 		sk=SSL_get_ciphers(ssl);

 		for (i=0; i<sk_SSL_CIPHER_num(sk); i++)

 			{

 			BIO_puts(STDout,SSL_CIPHER_description(

 				sk_SSL_CIPHER_value(sk,i),

 				buf,sizeof buf));

 			}

 		}

 	ret=0;

 	if (0)

 		{

 err:

 		SSL_load_error_strings();

 		ERR_print_errors(bio_err);

 		}

 end:

 	if (ctx != NULL) SSL_CTX_free(ctx);

 	if (ssl != NULL) SSL_free(ssl);

 	if (STDout != NULL) BIO_free_all(STDout);

 	apps_shutdown();

 	OPENSSL_EXIT(ret);

 	}