Annotation of src/usr.bin/openssl/ciphers.c, Revision 1.7
1.7 ! doug 1: /* $OpenBSD: ciphers.c,v 1.6 2015/08/19 18:25:31 deraadt Exp $ */
1.2 jsing 2: /*
3: * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 jsing 16: */
17:
18: #include <stdio.h>
19: #include <stdlib.h>
20:
21: #include <openssl/err.h>
22: #include <openssl/ssl.h>
23:
1.2 jsing 24: #include "apps.h"
1.6 deraadt 25: #include "progs.h"
1.2 jsing 26:
27: struct {
28: int usage;
29: int verbose;
30: } ciphers_config;
31:
32: struct option ciphers_options[] = {
33: {
34: .name = "h",
35: .type = OPTION_FLAG,
36: .opt.flag = &ciphers_config.usage,
37: },
38: {
39: .name = "?",
40: .type = OPTION_FLAG,
41: .opt.flag = &ciphers_config.usage,
42: },
43: {
44: .name = "tls1",
1.5 doug 45: .desc = "This option is deprecated since it is the default",
46: .type = OPTION_DISCARD,
1.2 jsing 47: },
48: {
49: .name = "v",
50: .desc = "Provide cipher listing",
51: .type = OPTION_VALUE,
52: .opt.value = &ciphers_config.verbose,
53: .value = 1,
54: },
55: {
56: .name = "V",
57: .desc = "Provide cipher listing with cipher suite values",
58: .type = OPTION_VALUE,
59: .opt.value = &ciphers_config.verbose,
60: .value = 2,
61: },
1.3 jsing 62: { NULL },
1.1 jsing 63: };
64:
1.2 jsing 65: static void
66: ciphers_usage(void)
67: {
1.5 doug 68: fprintf(stderr, "usage: ciphers [-hVv] [-tls1] [cipherlist]\n");
1.2 jsing 69: options_usage(ciphers_options);
70: }
1.1 jsing 71:
72: int
73: ciphers_main(int argc, char **argv)
74: {
1.2 jsing 75: char *cipherlist = NULL;
76: STACK_OF(SSL_CIPHER) *ciphers;
77: const SSL_CIPHER *cipher;
78: SSL_CTX *ssl_ctx = NULL;
1.1 jsing 79: SSL *ssl = NULL;
1.2 jsing 80: uint16_t value;
81: int i, rv = 0;
1.1 jsing 82: char *desc;
1.7 ! doug 83:
! 84: if (single_execution) {
! 85: if (pledge("stdio rpath", NULL) == -1)
! 86: perror("pledge");
! 87: }
1.3 jsing 88:
89: memset(&ciphers_config, 0, sizeof(ciphers_config));
1.1 jsing 90:
1.2 jsing 91: if (options_parse(argc, argv, ciphers_options, &cipherlist,
92: NULL) != 0) {
93: ciphers_usage();
94: return (1);
95: }
1.1 jsing 96:
1.2 jsing 97: if (ciphers_config.usage) {
98: ciphers_usage();
99: return (1);
1.1 jsing 100: }
101:
1.5 doug 102: if ((ssl_ctx = SSL_CTX_new(TLSv1_client_method())) == NULL)
1.1 jsing 103: goto err;
1.2 jsing 104:
105: if (cipherlist != NULL) {
106: if (SSL_CTX_set_cipher_list(ssl_ctx, cipherlist) == 0)
1.1 jsing 107: goto err;
108: }
1.2 jsing 109:
110: if ((ssl = SSL_new(ssl_ctx)) == NULL)
1.1 jsing 111: goto err;
112:
1.2 jsing 113: if ((ciphers = SSL_get_ciphers(ssl)) == NULL)
114: goto err;
115:
116: for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
117: cipher = sk_SSL_CIPHER_value(ciphers, i);
118: if (ciphers_config.verbose == 0) {
119: fprintf(stdout, "%s%s", (i ? ":" : ""),
120: SSL_CIPHER_get_name(cipher));
121: continue;
122: }
123: if (ciphers_config.verbose > 1) {
124: value = SSL_CIPHER_get_value(cipher);
1.4 bcook 125: fprintf(stdout, "%-*s0x%02X,0x%02X - ", 10, "",
1.2 jsing 126: ((value >> 8) & 0xff), (value & 0xff));
1.1 jsing 127: }
1.2 jsing 128: desc = SSL_CIPHER_description(cipher, NULL, 0);
129: if (strcmp(desc, "OPENSSL_malloc Error") == 0) {
130: fprintf(stderr, "out of memory\n");
131: goto err;
1.1 jsing 132: }
1.2 jsing 133: fprintf(stdout, "%s", desc);
134: free(desc);
1.1 jsing 135: }
1.2 jsing 136: if (ciphers_config.verbose == 0)
137: fprintf(stdout, "\n");
138:
139: goto done;
1.1 jsing 140:
141: err:
1.2 jsing 142: ERR_print_errors_fp(stderr);
143: rv = 1;
1.1 jsing 144:
1.2 jsing 145: done:
146: SSL_CTX_free(ssl_ctx);
147: SSL_free(ssl);
1.1 jsing 148:
1.2 jsing 149: return (rv);
1.1 jsing 150: }
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