ciphers.c revision 296465 
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
72static 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
81int MAIN(int, char **);
82
83int 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}
202