8b8e5bed23
New function ssl_cipher_disabled. Check for disabled client ciphers using ssl_cipher_disabled. New function to return only supported ciphers. New option to ciphers utility to print only supported ciphers.
255 lines
7.2 KiB
C
255 lines
7.2 KiB
C
/* apps/ciphers.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef OPENSSL_NO_STDIO
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#define APPS_WIN16
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#endif
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#include "apps.h"
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#include <openssl/err.h>
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#include <openssl/ssl.h>
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#undef PROG
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#define PROG ciphers_main
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static const char *ciphers_usage[]={
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"usage: ciphers args\n",
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" -v - verbose mode, a textual listing of the SSL/TLS ciphers in OpenSSL\n",
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" -V - even more verbose\n",
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" -ssl2 - SSL2 mode\n",
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" -ssl3 - SSL3 mode\n",
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" -tls1 - TLS1 mode\n",
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NULL
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};
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int MAIN(int, char **);
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int MAIN(int argc, char **argv)
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{
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int ret=1,i;
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int verbose=0,Verbose=0;
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int use_supported = 0;
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#ifndef OPENSSL_NO_SSL_TRACE
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int stdname = 0;
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#endif
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const char **pp;
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const char *p;
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int badops=0;
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SSL_CTX *ctx=NULL;
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SSL *ssl=NULL;
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char *ciphers=NULL;
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const SSL_METHOD *meth=NULL;
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STACK_OF(SSL_CIPHER) *sk;
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char buf[512];
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BIO *STDout=NULL;
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#if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
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meth=SSLv23_server_method();
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#elif !defined(OPENSSL_NO_SSL3)
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meth=SSLv3_server_method();
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#elif !defined(OPENSSL_NO_SSL2)
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meth=SSLv2_server_method();
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#endif
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apps_startup();
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if (bio_err == NULL)
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bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
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STDout=BIO_new_fp(stdout,BIO_NOCLOSE);
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#ifdef OPENSSL_SYS_VMS
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{
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BIO *tmpbio = BIO_new(BIO_f_linebuffer());
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STDout = BIO_push(tmpbio, STDout);
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}
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#endif
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if (!load_config(bio_err, NULL))
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goto end;
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argc--;
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argv++;
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while (argc >= 1)
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{
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if (strcmp(*argv,"-v") == 0)
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verbose=1;
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else if (strcmp(*argv,"-V") == 0)
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verbose=Verbose=1;
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else if (strcmp(*argv,"-s") == 0)
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use_supported = 1;
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#ifndef OPENSSL_NO_SSL_TRACE
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else if (strcmp(*argv,"-stdname") == 0)
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stdname=verbose=1;
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#endif
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#ifndef OPENSSL_NO_SSL2
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else if (strcmp(*argv,"-ssl2") == 0)
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meth=SSLv2_client_method();
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#endif
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#ifndef OPENSSL_NO_SSL3
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else if (strcmp(*argv,"-ssl3") == 0)
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meth=SSLv3_client_method();
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#endif
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#ifndef OPENSSL_NO_TLS1
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else if (strcmp(*argv,"-tls1") == 0)
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meth=TLSv1_client_method();
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#endif
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else if ((strncmp(*argv,"-h",2) == 0) ||
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(strcmp(*argv,"-?") == 0))
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{
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badops=1;
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break;
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}
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else
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{
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ciphers= *argv;
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}
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argc--;
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argv++;
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}
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if (badops)
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{
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for (pp=ciphers_usage; (*pp != NULL); pp++)
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BIO_printf(bio_err,"%s",*pp);
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goto end;
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}
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OpenSSL_add_ssl_algorithms();
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ctx=SSL_CTX_new(meth);
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if (ctx == NULL) goto err;
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if (ciphers != NULL) {
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if(!SSL_CTX_set_cipher_list(ctx,ciphers)) {
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BIO_printf(bio_err, "Error in cipher list\n");
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goto err;
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}
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}
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ssl=SSL_new(ctx);
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if (ssl == NULL) goto err;
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if (use_supported)
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sk=SSL_get1_supported_ciphers(ssl);
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else
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sk=SSL_get_ciphers(ssl);
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if (!verbose)
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{
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for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
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{
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SSL_CIPHER *c = sk_SSL_CIPHER_value(sk,i);
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p = SSL_CIPHER_get_name(c);
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if (p == NULL) break;
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if (i != 0) BIO_printf(STDout,":");
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BIO_printf(STDout,"%s",p);
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}
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BIO_printf(STDout,"\n");
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}
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else /* verbose */
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{
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for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
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{
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SSL_CIPHER *c;
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c = sk_SSL_CIPHER_value(sk,i);
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if (Verbose)
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{
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unsigned long id = SSL_CIPHER_get_id(c);
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int id0 = (int)(id >> 24);
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int id1 = (int)((id >> 16) & 0xffL);
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int id2 = (int)((id >> 8) & 0xffL);
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int id3 = (int)(id & 0xffL);
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if ((id & 0xff000000L) == 0x02000000L)
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BIO_printf(STDout, " 0x%02X,0x%02X,0x%02X - ", id1, id2, id3); /* SSL2 cipher */
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else if ((id & 0xff000000L) == 0x03000000L)
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BIO_printf(STDout, " 0x%02X,0x%02X - ", id2, id3); /* SSL3 cipher */
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else
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BIO_printf(STDout, "0x%02X,0x%02X,0x%02X,0x%02X - ", id0, id1, id2, id3); /* whatever */
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}
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#ifndef OPENSSL_NO_SSL_TRACE
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if (stdname)
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{
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const char *nm = SSL_CIPHER_standard_name(c);
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if (nm == NULL)
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nm = "UNKNOWN";
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BIO_printf(STDout, "%s - ", nm);
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}
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#endif
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BIO_puts(STDout,SSL_CIPHER_description(c,buf,sizeof buf));
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}
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}
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ret=0;
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if (0)
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{
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err:
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SSL_load_error_strings();
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ERR_print_errors(bio_err);
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}
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end:
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if (use_supported && sk)
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sk_SSL_CIPHER_free(sk);
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if (ctx != NULL) SSL_CTX_free(ctx);
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if (ssl != NULL) SSL_free(ssl);
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if (STDout != NULL) BIO_free_all(STDout);
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apps_shutdown();
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OPENSSL_EXIT(ret);
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}
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