ciphers.c revision 331638 
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#ifndef OPENSSL_NO_SSL_TRACE
89    int stdname = 0;
90#endif
91    const char **pp;
92    const char *p;
93    int badops = 0;
94    SSL_CTX *ctx = NULL;
95    SSL *ssl = NULL;
96    char *ciphers = NULL;
97    const SSL_METHOD *meth = NULL;
98    STACK_OF(SSL_CIPHER) *sk;
99    char buf[512];
100    BIO *STDout = NULL;
101
102    meth = SSLv23_server_method();
103
104    apps_startup();
105
106    if (bio_err == NULL)
107        bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
108    STDout = BIO_new_fp(stdout, BIO_NOCLOSE);
109#ifdef OPENSSL_SYS_VMS
110    {
111        BIO *tmpbio = BIO_new(BIO_f_linebuffer());
112        STDout = BIO_push(tmpbio, STDout);
113    }
114#endif
115    if (!load_config(bio_err, NULL))
116        goto end;
117
118    argc--;
119    argv++;
120    while (argc >= 1) {
121        if (strcmp(*argv, "-v") == 0)
122            verbose = 1;
123        else if (strcmp(*argv, "-V") == 0)
124            verbose = Verbose = 1;
125#ifndef OPENSSL_NO_SSL_TRACE
126        else if (strcmp(*argv, "-stdname") == 0)
127            stdname = verbose = 1;
128#endif
129#ifndef OPENSSL_NO_SSL2
130        else if (strcmp(*argv, "-ssl2") == 0)
131            meth = SSLv2_client_method();
132#endif
133#ifndef OPENSSL_NO_SSL3
134        else if (strcmp(*argv, "-ssl3") == 0)
135            meth = SSLv3_client_method();
136#endif
137#ifndef OPENSSL_NO_TLS1
138        else if (strcmp(*argv, "-tls1") == 0)
139            meth = TLSv1_client_method();
140#endif
141        else if ((strncmp(*argv, "-h", 2) == 0) || (strcmp(*argv, "-?") == 0)) {
142            badops = 1;
143            break;
144        } else {
145            ciphers = *argv;
146        }
147        argc--;
148        argv++;
149    }
150
151    if (badops) {
152        for (pp = ciphers_usage; (*pp != NULL); pp++)
153            BIO_printf(bio_err, "%s", *pp);
154        goto end;
155    }
156
157    OpenSSL_add_ssl_algorithms();
158
159    ctx = SSL_CTX_new(meth);
160    if (ctx == NULL)
161        goto err;
162    if (ciphers != NULL) {
163        if (!SSL_CTX_set_cipher_list(ctx, ciphers)) {
164            BIO_printf(bio_err, "Error in cipher list\n");
165            goto err;
166        }
167    }
168    ssl = SSL_new(ctx);
169    if (ssl == NULL)
170        goto err;
171
172    if (!verbose) {
173        for (i = 0;; i++) {
174            p = SSL_get_cipher_list(ssl, i);
175            if (p == NULL)
176                break;
177            if (i != 0)
178                BIO_printf(STDout, ":");
179            BIO_printf(STDout, "%s", p);
180        }
181        BIO_printf(STDout, "\n");
182    } else {                    /* verbose */
183
184        sk = SSL_get_ciphers(ssl);
185
186        for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
187            SSL_CIPHER *c;
188
189            c = sk_SSL_CIPHER_value(sk, i);
190
191            if (Verbose) {
192                unsigned long id = SSL_CIPHER_get_id(c);
193                int id0 = (int)(id >> 24);
194                int id1 = (int)((id >> 16) & 0xffL);
195                int id2 = (int)((id >> 8) & 0xffL);
196                int id3 = (int)(id & 0xffL);
197
198                if ((id & 0xff000000L) == 0x02000000L) {
199                    /* SSL2 cipher */
200                    BIO_printf(STDout, "     0x%02X,0x%02X,0x%02X - ", id1,
201                               id2, id3);
202                } else if ((id & 0xff000000L) == 0x03000000L) {
203                    /* SSL3 cipher */
204                    BIO_printf(STDout, "          0x%02X,0x%02X - ", id2,
205                               id3);
206                } else {
207                    /* whatever */
208                    BIO_printf(STDout, "0x%02X,0x%02X,0x%02X,0x%02X - ", id0,
209                               id1, id2, id3);
210                }
211            }
212#ifndef OPENSSL_NO_SSL_TRACE
213            if (stdname) {
214                const char *nm = SSL_CIPHER_standard_name(c);
215                if (nm == NULL)
216                    nm = "UNKNOWN";
217                BIO_printf(STDout, "%s - ", nm);
218            }
219#endif
220            BIO_puts(STDout, SSL_CIPHER_description(c, buf, sizeof(buf)));
221        }
222    }
223
224    ret = 0;
225    if (0) {
226 err:
227        SSL_load_error_strings();
228        ERR_print_errors(bio_err);
229    }
230 end:
231    if (ctx != NULL)
232        SSL_CTX_free(ctx);
233    if (ssl != NULL)
234        SSL_free(ssl);
235    if (STDout != NULL)
236        BIO_free_all(STDout);
237    apps_shutdown();
238    OPENSSL_EXIT(ret);
239}
240