ciphers.c revision 296341 
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 SSL/TLS ciphers in OpenSSL\n",
75    " -V          - even more verbose\n",
76    " -ssl2       - SSL2 mode\n",
77    " -ssl3       - SSL3 mode\n",
78    " -tls1       - TLS1 mode\n",
79    NULL
80};
81
82int MAIN(int, char **);
83
84int MAIN(int argc, char **argv)
85{
86    int ret = 1, i;
87    int verbose = 0, Verbose = 0;
88    const char **pp;
89    const char *p;
90    int badops = 0;
91    SSL_CTX *ctx = NULL;
92    SSL *ssl = NULL;
93    char *ciphers = NULL;
94    const SSL_METHOD *meth = NULL;
95    STACK_OF(SSL_CIPHER) *sk;
96    char buf[512];
97    BIO *STDout = NULL;
98
99    meth = SSLv23_server_method();
100
101    apps_startup();
102
103    if (bio_err == NULL)
104        bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
105    STDout = BIO_new_fp(stdout, BIO_NOCLOSE);
106#ifdef OPENSSL_SYS_VMS
107    {
108        BIO *tmpbio = BIO_new(BIO_f_linebuffer());
109        STDout = BIO_push(tmpbio, STDout);
110    }
111#endif
112    if (!load_config(bio_err, NULL))
113        goto end;
114
115    argc--;
116    argv++;
117    while (argc >= 1) {
118        if (strcmp(*argv, "-v") == 0)
119            verbose = 1;
120        else if (strcmp(*argv, "-V") == 0)
121            verbose = Verbose = 1;
122#ifndef OPENSSL_NO_SSL2
123        else if (strcmp(*argv, "-ssl2") == 0)
124            meth = SSLv2_client_method();
125#endif
126#ifndef OPENSSL_NO_SSL3
127        else if (strcmp(*argv, "-ssl3") == 0)
128            meth = SSLv3_client_method();
129#endif
130#ifndef OPENSSL_NO_TLS1
131        else if (strcmp(*argv, "-tls1") == 0)
132            meth = TLSv1_client_method();
133#endif
134        else if ((strncmp(*argv, "-h", 2) == 0) || (strcmp(*argv, "-?") == 0)) {
135            badops = 1;
136            break;
137        } else {
138            ciphers = *argv;
139        }
140        argc--;
141        argv++;
142    }
143
144    if (badops) {
145        for (pp = ciphers_usage; (*pp != NULL); pp++)
146            BIO_printf(bio_err, "%s", *pp);
147        goto end;
148    }
149
150    OpenSSL_add_ssl_algorithms();
151
152    ctx = SSL_CTX_new(meth);
153    if (ctx == NULL)
154        goto err;
155    if (ciphers != NULL) {
156        if (!SSL_CTX_set_cipher_list(ctx, ciphers)) {
157            BIO_printf(bio_err, "Error in cipher list\n");
158            goto err;
159        }
160    }
161    ssl = SSL_new(ctx);
162    if (ssl == NULL)
163        goto err;
164
165    if (!verbose) {
166        for (i = 0;; i++) {
167            p = SSL_get_cipher_list(ssl, i);
168            if (p == NULL)
169                break;
170            if (i != 0)
171                BIO_printf(STDout, ":");
172            BIO_printf(STDout, "%s", p);
173        }
174        BIO_printf(STDout, "\n");
175    } else {                    /* verbose */
176
177        sk = SSL_get_ciphers(ssl);
178
179        for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
180            SSL_CIPHER *c;
181
182            c = sk_SSL_CIPHER_value(sk, i);
183
184            if (Verbose) {
185                unsigned long id = SSL_CIPHER_get_id(c);
186                int id0 = (int)(id >> 24);
187                int id1 = (int)((id >> 16) & 0xffL);
188                int id2 = (int)((id >> 8) & 0xffL);
189                int id3 = (int)(id & 0xffL);
190
191                if ((id & 0xff000000L) == 0x02000000L) {
192                    /* SSL2 cipher */
193                    BIO_printf(STDout, "     0x%02X,0x%02X,0x%02X - ", id1,
194                               id2, id3);
195                } else if ((id & 0xff000000L) == 0x03000000L) {
196                    /* SSL3 cipher */
197                    BIO_printf(STDout, "          0x%02X,0x%02X - ", id2,
198                               id3);
199                } else {
200                    /* whatever */
201                    BIO_printf(STDout, "0x%02X,0x%02X,0x%02X,0x%02X - ", id0,
202                               id1, id2, id3);
203                }
204            }
205
206            BIO_puts(STDout, SSL_CIPHER_description(c, buf, sizeof buf));
207        }
208    }
209
210    ret = 0;
211    if (0) {
212 err:
213        SSL_load_error_strings();
214        ERR_print_errors(bio_err);
215    }
216 end:
217    if (ctx != NULL)
218        SSL_CTX_free(ctx);
219    if (ssl != NULL)
220        SSL_free(ssl);
221    if (STDout != NULL)
222        BIO_free_all(STDout);
223    apps_shutdown();
224    OPENSSL_EXIT(ret);
225}
226