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/* $OpenBSD: ciphers.c,v 1.8 2015/10/17 15:00:11 doug Exp $ */ |
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/* |
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* Copyright (c) 2014 Joel Sing <jsing@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <openssl/err.h> |
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#include <openssl/ssl.h> |
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#include "apps.h" |
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#include "progs.h" |
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struct { |
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int usage; |
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int verbose; |
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} ciphers_config; |
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struct option ciphers_options[] = { |
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{ |
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.name = "h", |
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.type = OPTION_FLAG, |
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.opt.flag = &ciphers_config.usage, |
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}, |
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{ |
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.name = "?", |
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.type = OPTION_FLAG, |
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.opt.flag = &ciphers_config.usage, |
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}, |
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{ |
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.name = "tls1", |
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.desc = "This option is deprecated since it is the default", |
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.type = OPTION_DISCARD, |
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}, |
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{ |
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.name = "v", |
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.desc = "Provide cipher listing", |
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.type = OPTION_VALUE, |
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.opt.value = &ciphers_config.verbose, |
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.value = 1, |
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}, |
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{ |
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.name = "V", |
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.desc = "Provide cipher listing with cipher suite values", |
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.type = OPTION_VALUE, |
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.opt.value = &ciphers_config.verbose, |
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.value = 2, |
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}, |
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{ NULL }, |
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}; |
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static void |
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ciphers_usage(void) |
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{ |
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fprintf(stderr, "usage: ciphers [-hVv] [-tls1] [cipherlist]\n"); |
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options_usage(ciphers_options); |
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} |
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int |
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ciphers_main(int argc, char **argv) |
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{ |
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char *cipherlist = NULL; |
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STACK_OF(SSL_CIPHER) *ciphers; |
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const SSL_CIPHER *cipher; |
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SSL_CTX *ssl_ctx = NULL; |
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SSL *ssl = NULL; |
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uint16_t value; |
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int i, rv = 0; |
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char *desc; |
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✓✗ |
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if (single_execution) { |
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✗✓ |
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if (pledge("stdio rpath flock cpath wpath", NULL) == -1) { |
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perror("pledge"); |
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exit(1); |
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} |
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} |
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memset(&ciphers_config, 0, sizeof(ciphers_config)); |
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✓✓ |
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if (options_parse(argc, argv, ciphers_options, &cipherlist, |
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NULL) != 0) { |
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ciphers_usage(); |
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return (1); |
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} |
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✗✓ |
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if (ciphers_config.usage) { |
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ciphers_usage(); |
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return (1); |
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} |
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✓✗ |
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if ((ssl_ctx = SSL_CTX_new(TLSv1_client_method())) == NULL) |
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goto err; |
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✓✓ |
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if (cipherlist != NULL) { |
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✓✗ |
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if (SSL_CTX_set_cipher_list(ssl_ctx, cipherlist) == 0) |
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goto err; |
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} |
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✓✗ |
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if ((ssl = SSL_new(ssl_ctx)) == NULL) |
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goto err; |
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✓✗ |
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if ((ciphers = SSL_get_ciphers(ssl)) == NULL) |
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goto err; |
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✓✓ |
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for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { |
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cipher = sk_SSL_CIPHER_value(ciphers, i); |
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✓✓ |
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if (ciphers_config.verbose == 0) { |
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fprintf(stdout, "%s%s", (i ? ":" : ""), |
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SSL_CIPHER_get_name(cipher)); |
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continue; |
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} |
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✓✗ |
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if (ciphers_config.verbose > 1) { |
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value = SSL_CIPHER_get_value(cipher); |
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fprintf(stdout, "%-*s0x%02X,0x%02X - ", 10, "", |
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((value >> 8) & 0xff), (value & 0xff)); |
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} |
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desc = SSL_CIPHER_description(cipher, NULL, 0); |
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✗✓ |
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if (strcmp(desc, "OPENSSL_malloc Error") == 0) { |
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fprintf(stderr, "out of memory\n"); |
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goto err; |
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} |
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fprintf(stdout, "%s", desc); |
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free(desc); |
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} |
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✓✓ |
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if (ciphers_config.verbose == 0) |
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fprintf(stdout, "\n"); |
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goto done; |
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err: |
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ERR_print_errors_fp(stderr); |
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rv = 1; |
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done: |
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SSL_CTX_free(ssl_ctx); |
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SSL_free(ssl); |
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return (rv); |
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} |