apps/ciphers.c

   1 /* apps/ciphers.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #ifdef OPENSSL_NO_STDIO
  63 # define APPS_WIN16
  64 #endif
  65 #include "apps.h"
  66 #include <openssl/err.h>
  67 #include <openssl/ssl.h>
  68
  69 #undef PROG
  70 #define PROG    ciphers_main
  71
  72 static const char *ciphers_usage[] = {
  73     "usage: ciphers args\n",
  74     " -v          - verbose mode, a textual listing of the ciphers in SSLeay\n",
  75     " -ssl2       - SSL2 mode\n",
  76     " -ssl3       - SSL3 mode\n",
  77     " -tls1       - TLS1 mode\n",
  78     NULL
  79 };
  80
  81 int MAIN(int, char **);
  82
  83 int MAIN(int argc, char **argv)
  84 {
  85     int ret = 1, i;
  86     int verbose = 0;
  87     const char **pp;
  88     const char *p;
  89     int badops = 0;
  90     SSL_CTX *ctx = NULL;
  91     SSL *ssl = NULL;
  92     char *ciphers = NULL;
  93     SSL_METHOD *meth = NULL;
  94     STACK_OF(SSL_CIPHER) *sk;
  95     char buf[512];
  96     BIO *STDout = NULL;
  97
  98 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
  99     meth = SSLv23_server_method();
 100 #elif !defined(OPENSSL_NO_SSL3)
 101     meth = SSLv3_server_method();
 102 #elif !defined(OPENSSL_NO_SSL2)
 103     meth = SSLv2_server_method();
 104 #endif
 105
 106     apps_startup();
 107
 108     if (bio_err == NULL)
 109         bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 110     STDout = BIO_new_fp(stdout, BIO_NOCLOSE);
 111 #ifdef OPENSSL_SYS_VMS
 112     {
 113         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 114         STDout = BIO_push(tmpbio, STDout);
 115     }
 116 #endif
 117
 118     argc--;
 119     argv++;
 120     while (argc >= 1) {
 121         if (strcmp(*argv, "-v") == 0)
 122             verbose = 1;
 123 #ifndef OPENSSL_NO_SSL2
 124         else if (strcmp(*argv, "-ssl2") == 0)
 125             meth = SSLv2_client_method();
 126 #endif
 127 #ifndef OPENSSL_NO_SSL3
 128         else if (strcmp(*argv, "-ssl3") == 0)
 129             meth = SSLv3_client_method();
 130 #endif
 131 #ifndef OPENSSL_NO_TLS1
 132         else if (strcmp(*argv, "-tls1") == 0)
 133             meth = TLSv1_client_method();
 134 #endif
 135         else if ((strncmp(*argv, "-h", 2) == 0) || (strcmp(*argv, "-?") == 0)) {
 136             badops = 1;
 137             break;
 138         } else {
 139             ciphers = *argv;
 140         }
 141         argc--;
 142         argv++;
 143     }
 144
 145     if (badops) {
 146         for (pp = ciphers_usage; (*pp != NULL); pp++)
 147             BIO_printf(bio_err, "%s", *pp);
 148         goto end;
 149     }
 150
 151     OpenSSL_add_ssl_algorithms();
 152
 153     ctx = SSL_CTX_new(meth);
 154     if (ctx == NULL)
 155         goto err;
 156     if (ciphers != NULL) {
 157         if (!SSL_CTX_set_cipher_list(ctx, ciphers)) {
 158             BIO_printf(bio_err, "Error in cipher list\n");
 159             goto err;
 160         }
 161     }
 162     ssl = SSL_new(ctx);
 163     if (ssl == NULL)
 164         goto err;
 165
 166     if (!verbose) {
 167         for (i = 0;; i++) {
 168             p = SSL_get_cipher_list(ssl, i);
 169             if (p == NULL)
 170                 break;
 171             if (i != 0)
 172                 BIO_printf(STDout, ":");
 173             BIO_printf(STDout, "%s", p);
 174         }
 175         BIO_printf(STDout, "\n");
 176     } else {
 177         sk = SSL_get_ciphers(ssl);
 178
 179         for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
 180             BIO_puts(STDout,
 181                      SSL_CIPHER_description(sk_SSL_CIPHER_value(sk, i), buf,
 182                                             sizeof buf));
 183         }
 184     }
 185
 186     ret = 0;
 187     if (0) {
 188  err:
 189         SSL_load_error_strings();
 190         ERR_print_errors(bio_err);
 191     }
 192  end:
 193     if (ctx != NULL)
 194         SSL_CTX_free(ctx);
 195     if (ssl != NULL)
 196         SSL_free(ssl);
 197     if (STDout != NULL)
 198         BIO_free_all(STDout);
 199     apps_shutdown();
 200     OPENSSL_EXIT(ret);
 201 }