apps/ciphers.c

   1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   2  * All rights reserved.
   3  *
   4  * This package is an SSL implementation written
   5  * by Eric Young (eay@cryptsoft.com).
   6  * The implementation was written so as to conform with Netscapes SSL.
   7  *
   8  * This library is free for commercial and non-commercial use as long as
   9  * the following conditions are aheared to.  The following conditions
  10  * apply to all code found in this distribution, be it the RC4, RSA,
  11  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  12  * included with this distribution is covered by the same copyright terms
  13  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  14  *
  15  * Copyright remains Eric Young's, and as such any Copyright notices in
  16  * the code are not to be removed.
  17  * If this package is used in a product, Eric Young should be given attribution
  18  * as the author of the parts of the library used.
  19  * This can be in the form of a textual message at program startup or
  20  * in documentation (online or textual) provided with the package.
  21  *
  22  * Redistribution and use in source and binary forms, with or without
  23  * modification, are permitted provided that the following conditions
  24  * are met:
  25  * 1. Redistributions of source code must retain the copyright
  26  *    notice, this list of conditions and the following disclaimer.
  27  * 2. Redistributions in binary form must reproduce the above copyright
  28  *    notice, this list of conditions and the following disclaimer in the
  29  *    documentation and/or other materials provided with the distribution.
  30  * 3. All advertising materials mentioning features or use of this software
  31  *    must display the following acknowledgement:
  32  *    "This product includes cryptographic software written by
  33  *     Eric Young (eay@cryptsoft.com)"
  34  *    The word 'cryptographic' can be left out if the rouines from the library
  35  *    being used are not cryptographic related :-).
  36  * 4. If you include any Windows specific code (or a derivative thereof) from
  37  *    the apps directory (application code) you must include an acknowledgement:
  38  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  50  * SUCH DAMAGE.
  51  *
  52  * The licence and distribution terms for any publically available version or
  53  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  54  * copied and put under another distribution licence
  55  * [including the GNU Public Licence.]
  56  */
  57
  58 #include <stdio.h>
  59 #include <stdlib.h>
  60 #include <string.h>
  61 #include "apps.h"
  62 #include <openssl/err.h>
  63 #include <openssl/ssl.h>
  64
  65 typedef enum OPTION_choice {
  66     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  67     OPT_STDNAME,
  68     OPT_SSL3,
  69     OPT_TLS1,
  70     OPT_TLS1_1,
  71     OPT_TLS1_2,
  72     OPT_PSK,
  73     OPT_V, OPT_UPPER_V, OPT_S
  74 } OPTION_CHOICE;
  75
  76 OPTIONS ciphers_options[] = {
  77     {"help", OPT_HELP, '-', "Display this summary"},
  78     {"v", OPT_V, '-', "Verbose listing of the SSL/TLS ciphers"},
  79     {"V", OPT_UPPER_V, '-', "Even more verbose"},
  80     {"s", OPT_S, '-', "Only supported ciphers"},
  81     {"tls1", OPT_TLS1, '-', "TLS1 mode"},
  82     {"tls1_1", OPT_TLS1_1, '-', "TLS1.1 mode"},
  83     {"tls1_2", OPT_TLS1_2, '-', "TLS1.2 mode"},
  84 #ifndef OPENSSL_NO_SSL_TRACE
  85     {"stdname", OPT_STDNAME, '-', "Show standard cipher names"},
  86 #endif
  87 #ifndef OPENSSL_NO_SSL3
  88     {"ssl3", OPT_SSL3, '-', "SSL3 mode"},
  89 #endif
  90 #ifndef OPENSSL_NO_PSK
  91     {"psk", OPT_PSK, '-', "include ciphersuites requiring PSK"},
  92 #endif
  93     {NULL}
  94 };
  95
  96 #ifndef OPENSSL_NO_PSK
  97 static unsigned int dummy_psk(SSL *ssl, const char *hint, char *identity,
  98                               unsigned int max_identity_len,
  99                               unsigned char *psk,
 100                               unsigned int max_psk_len)
 101 {
 102     return 0;
 103 }
 104 #endif
 105
 106 int ciphers_main(int argc, char **argv)
 107 {
 108     SSL_CTX *ctx = NULL;
 109     SSL *ssl = NULL;
 110     STACK_OF(SSL_CIPHER) *sk = NULL;
 111     const SSL_METHOD *meth = TLS_server_method();
 112     int ret = 1, i, verbose = 0, Verbose = 0, use_supported = 0;
 113 #ifndef OPENSSL_NO_SSL_TRACE
 114     int stdname = 0;
 115 #endif
 116 #ifndef OPENSSL_NO_PSK
 117     int psk = 0;
 118 #endif
 119     const char *p;
 120     char *ciphers = NULL, *prog;
 121     char buf[512];
 122     OPTION_CHOICE o;
 123
 124     prog = opt_init(argc, argv, ciphers_options);
 125     while ((o = opt_next()) != OPT_EOF) {
 126         switch (o) {
 127         case OPT_EOF:
 128         case OPT_ERR:
 129  opthelp:
 130             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 131             goto end;
 132         case OPT_HELP:
 133             opt_help(ciphers_options);
 134             ret = 0;
 135             goto end;
 136         case OPT_V:
 137             verbose = 1;
 138             break;
 139         case OPT_UPPER_V:
 140             verbose = Verbose = 1;
 141             break;
 142         case OPT_S:
 143             use_supported = 1;
 144             break;
 145         case OPT_STDNAME:
 146 #ifndef OPENSSL_NO_SSL_TRACE
 147             stdname = verbose = 1;
 148 #endif
 149             break;
 150         case OPT_SSL3:
 151 #ifndef OPENSSL_NO_SSL3
 152             meth = SSLv3_client_method();
 153 #endif
 154             break;
 155         case OPT_TLS1:
 156             meth = TLSv1_client_method();
 157             break;
 158         case OPT_TLS1_1:
 159             meth = TLSv1_1_client_method();
 160             break;
 161         case OPT_TLS1_2:
 162             meth = TLSv1_2_client_method();
 163             break;
 164         case OPT_PSK:
 165 #ifndef OPENSSL_NO_PSK
 166             psk = 1;
 167 #endif
 168             break;
 169         }
 170     }
 171     argv = opt_rest();
 172     argc = opt_num_rest();
 173
 174     if (argc == 1)
 175         ciphers = *argv;
 176     else if (argc != 0)
 177         goto opthelp;
 178
 179     ctx = SSL_CTX_new(meth);
 180     if (ctx == NULL)
 181         goto err;
 182 #ifndef OPENSSL_NO_PSK
 183     if (psk)
 184         SSL_CTX_set_psk_client_callback(ctx, dummy_psk);
 185 #endif
 186     if (ciphers != NULL) {
 187         if (!SSL_CTX_set_cipher_list(ctx, ciphers)) {
 188             BIO_printf(bio_err, "Error in cipher list\n");
 189             goto err;
 190         }
 191     }
 192     ssl = SSL_new(ctx);
 193     if (ssl == NULL)
 194         goto err;
 195
 196     if (use_supported)
 197         sk = SSL_get1_supported_ciphers(ssl);
 198     else
 199         sk = SSL_get_ciphers(ssl);
 200
 201     if (!verbose) {
 202         for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
 203             SSL_CIPHER *c = sk_SSL_CIPHER_value(sk, i);
 204             p = SSL_CIPHER_get_name(c);
 205             if (p == NULL)
 206                 break;
 207             if (i != 0)
 208                 BIO_printf(bio_out, ":");
 209             BIO_printf(bio_out, "%s", p);
 210         }
 211         BIO_printf(bio_out, "\n");
 212     } else {
 213
 214         for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
 215             SSL_CIPHER *c;
 216
 217             c = sk_SSL_CIPHER_value(sk, i);
 218
 219             if (Verbose) {
 220                 unsigned long id = SSL_CIPHER_get_id(c);
 221                 int id0 = (int)(id >> 24);
 222                 int id1 = (int)((id >> 16) & 0xffL);
 223                 int id2 = (int)((id >> 8) & 0xffL);
 224                 int id3 = (int)(id & 0xffL);
 225
 226                 if ((id & 0xff000000L) == 0x03000000L)
 227                     BIO_printf(bio_out, "          0x%02X,0x%02X - ", id2, id3); /* SSL3
 228                                                                                   * cipher */
 229                 else
 230                     BIO_printf(bio_out, "0x%02X,0x%02X,0x%02X,0x%02X - ", id0, id1, id2, id3); /* whatever */
 231             }
 232 #ifndef OPENSSL_NO_SSL_TRACE
 233             if (stdname) {
 234                 const char *nm = SSL_CIPHER_standard_name(c);
 235                 if (nm == NULL)
 236                     nm = "UNKNOWN";
 237                 BIO_printf(bio_out, "%s - ", nm);
 238             }
 239 #endif
 240             BIO_puts(bio_out, SSL_CIPHER_description(c, buf, sizeof buf));
 241         }
 242     }
 243
 244     ret = 0;
 245     goto end;
 246  err:
 247     ERR_print_errors(bio_err);
 248  end:
 249     if (use_supported)
 250         sk_SSL_CIPHER_free(sk);
 251     SSL_CTX_free(ctx);
 252     SSL_free(ssl);
 253     return (ret);
 254 }