/*

 * Copyright (C) 2012 Free Software Foundation, Inc.

 * Copyright (C) 2012-2015 Nikos Mavrogiannopoulos

 *

 * Author: Nikos Mavrogiannopoulos

 *

 * This file is part of GnuTLS.

 *

 * GnuTLS is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 3 of the License, or

 * (at your option) any later version.

 *

 * GnuTLS is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with GnuTLS; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA

 */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <gnutls/gnutls.h>

#include "utils.h"

static void

try_prio(const char *prio, unsigned expected_cs, unsigned expected_ciphers, unsigned line)

{

	int ret;

	gnutls_priority_t p;

	const char *err;

	const unsigned int *t;

	unsigned i, si, count = 0;

	/* this must be called once in the program

	 */

	global_init();

	ret = gnutls_priority_init(&p, prio, &err;;

	if (ret < 0) {

		fprintf(stderr, "error: %s: %s\n", gnutls_strerror(ret),

			err);

		exit(1);

	}

	for (i = 0;; i++) {

		ret = gnutls_priority_get_cipher_suite_index(p, i, &si);

		if (ret == GNUTLS_E_UNKNOWN_CIPHER_SUITE)

			continue;

		else if (ret == GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE)

			break;

		else if (ret == 0) {

			count++;

			/* fprintf(stderr, "%s\n", gnutls_cipher_suite_info(si, NULL, NULL, NULL, NULL, NULL)); */

		}

	}

	ret = gnutls_priority_cipher_list(p, &t);

	if ((unsigned) ret != expected_ciphers) {

#if 0

		for (i = 0; i < ret; i++)

			fprintf(stderr, "%s\n",

				gnutls_cipher_get_name(t[i]));

#endif

		fail("%s:%d: expected %d ciphers, found %d\n", prio, line, expected_ciphers,

		     ret);

		exit(1);

	}

	gnutls_priority_deinit(p);

	/* fprintf(stderr, "count: %d\n", count); */

	if (debug)

		success("finished: %s\n", prio);

	if (count != expected_cs) {

		fail("%s:%d: expected %d ciphersuites, found %d\n", prio, line, expected_cs,

		     count);

		exit(1);

	}

}

static void

try_prio_err(const char *prio, int err)

{

	int ret;

	gnutls_priority_t p;

	ret = gnutls_priority_init(&p, prio, NULL);

	if (ret < 0 && ret != err) {

		fprintf(stderr, "error: %s\n", gnutls_strerror(ret));

		exit(1);

	}

	if (ret >= 0)

		gnutls_priority_deinit(p);

	if (debug)

		success("finished: %s\n", prio);

}

void doit(void)

{

	const int null = 3;

	int sec128_cs = 29;

	int sec256_cs = 12;

	int normal_cs = 29;

	int pfs_cs = 23;

	int null_normal_cs = 28; /* disables TLS1.3 CS */

	int normal_ciphers = 7;

	if (gnutls_fips140_mode_enabled()) {

		normal_cs = 25;

		normal_ciphers = 6;

		pfs_cs = 25;

		sec256_cs = 8;

		sec128_cs = 25;

	}

	try_prio("NORMAL", normal_cs, normal_ciphers, __LINE__);

	try_prio("NORMAL:-MAC-ALL:+MD5:+MAC-ALL", normal_cs, normal_ciphers, __LINE__);

	if (!gnutls_fips140_mode_enabled()) {

		try_prio("PFS", pfs_cs, normal_ciphers, __LINE__);

		try_prio("NORMAL:+CIPHER-ALL", normal_cs, 7, __LINE__);	/* all (except null) */

		try_prio("NORMAL:-CIPHER-ALL:+NULL", null, 1, __LINE__);	/* null */

		try_prio("NORMAL:-CIPHER-ALL:+NULL:+CIPHER-ALL", null_normal_cs, 8, __LINE__);	/* should be null + all */

		try_prio("NORMAL:-CIPHER-ALL:+NULL:+CIPHER-ALL:-CIPHER-ALL:+AES-128-CBC", 4, 1, __LINE__);	/* should be null + all */

#ifdef ENABLE_GOST

		try_prio("NONE:+VERS-TLS1.2:+GOST", 1, 1, __LINE__);

#endif

	}

	try_prio("PERFORMANCE", normal_cs, normal_ciphers, __LINE__);

	try_prio("SECURE256", sec256_cs, 4, __LINE__);

	try_prio("SECURE128", sec128_cs, 7, __LINE__);

	try_prio("SECURE128:+SECURE256", sec128_cs, 7, __LINE__);	/* should be the same as SECURE128 */

	try_prio("SECURE128:+SECURE256:+NORMAL", normal_cs, 7, __LINE__);	/* should be the same as NORMAL */

	try_prio("SUITEB192", 1, 1, __LINE__);

	try_prio("SUITEB128", 2, 2, __LINE__);

	/* check legacy strings */

	try_prio("NORMAL:+RSA-EXPORT:+ARCFOUR-40", normal_cs, normal_ciphers, __LINE__);

	try_prio_err("NORMAL:-VERS-ALL:+VERS-TLS1.2:-SIGN-ALL:+SIGN-ECDSA-SECP256R1-SHA256", GNUTLS_E_NO_PRIORITIES_WERE_SET);

	try_prio_err("NORMAL:-VERS-ALL:+VERS-TLS1.2:-SIGN-ALL", GNUTLS_E_NO_PRIORITIES_WERE_SET);

	try_prio_err("NORMAL:-VERS-ALL:+VERS-DTLS1.2:-SIGN-ALL", GNUTLS_E_NO_PRIORITIES_WERE_SET);

}