ciphers.c

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/* 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);
        }

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