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