/*

 * Copyright (C) 2008-2012 Free Software Foundation, Inc.

 * Copyright (C) 2018 Red Hat, Inc.

 *

 * Author: Simon Josefsson, 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 Lesser General Public License

 * along with this program.  If not, see <https://www.gnu.org/licenses/>

 */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <errno.h>

#include <assert.h>

#include <gnutls/gnutls.h>

#include "utils.h"

#include "eagain-common.h"

#include "cert-common.h"

const char *side;

extern const char *_gnutls_default_priority_string;

static void tls_log_func(int level, const char *str)

{

	fprintf(stderr, "%s|<%d>| %s", side, level, str);

}

struct test_st {

	const char *name;

	const char *add_prio;

	const char *def_prio;

	int exp_err;

	int exp_etm;

	unsigned err_pos;

	unsigned exp_vers;

};

static void start(struct test_st *test)

{

	int ret;

	/* Server stuff. */

	gnutls_priority_t cache;

	gnutls_certificate_credentials_t serverx509cred;

	gnutls_session_t server;

	int sret = GNUTLS_E_AGAIN;

	/* Client stuff. */

	gnutls_certificate_credentials_t clientx509cred;

	gnutls_session_t client;

	const char *ep;

	int cret = GNUTLS_E_AGAIN;

	if (test == NULL)

		success("running gnutls_set_default_priority test\n");

	else

		success("running %s\n", test->name);

	if (test && test->def_prio)

		_gnutls_default_priority_string = test->def_prio;

	else

		_gnutls_default_priority_string = "NORMAL";

	/* General init. */

	global_init();

	gnutls_global_set_log_function(tls_log_func);

	if (debug)

		gnutls_global_set_log_level(6);

	assert(gnutls_certificate_allocate_credentials(&serverx509cred)>=0);

	assert(gnutls_certificate_set_x509_key_mem(serverx509cred,

					    &server_cert, &server_key,

					    GNUTLS_X509_FMT_PEM)>=0);

	assert(gnutls_init(&server, GNUTLS_SERVER) >= 0);

	gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE,

				serverx509cred);

	if (test == NULL) {

		ret = gnutls_priority_init(&cache, NULL, NULL);

		if (ret < 0)

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

	} else {

		ret = gnutls_priority_init2(&cache, test->add_prio, &ep, GNUTLS_PRIORITY_INIT_DEF_APPEND);

		if (ret < 0) {

			if (test->exp_err == ret) {

				if (strchr(_gnutls_default_priority_string, '@') != 0) {

					if (ep != test->add_prio) {

						fail("error expected error on start of string[%d]: %s\n",

							test->err_pos, test->add_prio);

					}

				} else {

					if (ep-test->add_prio != test->err_pos) {

						fprintf(stderr, "diff: %d\n", (int)(ep-test->add_prio));

						fail("error expected error on different position[%d]: %s\n",

							test->err_pos, test->add_prio);

					}

				}

				goto cleanup;

			}

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

		}

	}

	gnutls_priority_set(server, cache);

	gnutls_transport_set_push_function(server, server_push);

	gnutls_transport_set_pull_function(server, server_pull);

	gnutls_transport_set_ptr(server, server);

	/* Init client */

	ret = gnutls_certificate_allocate_credentials(&clientx509cred);

	if (ret < 0)

		exit(1);

	ret = gnutls_certificate_set_x509_trust_mem(clientx509cred, &ca_cert, GNUTLS_X509_FMT_PEM);

	if (ret < 0)

		exit(1);

	ret = gnutls_init(&client, GNUTLS_CLIENT);

	if (ret < 0)

		exit(1);

	ret = gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,

				clientx509cred);

	if (ret < 0)

		exit(1);

	ret = gnutls_set_default_priority(client);

	if (ret < 0)

		exit(1);

	gnutls_transport_set_push_function(client, client_push);

	gnutls_transport_set_pull_function(client, client_pull);

	gnutls_transport_set_ptr(client, client);

	HANDSHAKE(client, server);

	/* check gnutls_certificate_get_ours() - client side */

	{

		const gnutls_datum_t *mcert;

		mcert = gnutls_certificate_get_ours(client);

		if (mcert != NULL) {

			fail("gnutls_certificate_get_ours(): failed\n");

			exit(1);

		}

	}

	if (test && test->exp_vers != 0) {

		if (test->exp_vers != gnutls_protocol_get_version(server)) {

			fail("expected version %s, got %s\n",

			     gnutls_protocol_get_name(test->exp_vers),

			     gnutls_protocol_get_name(gnutls_protocol_get_version(server)));

		}

	}

	/* check the number of certificates received */

	{

		unsigned cert_list_size = 0;

		gnutls_typed_vdata_st data[2];

		unsigned status;

		memset(data, 0, sizeof(data));

		data[0].type = GNUTLS_DT_DNS_HOSTNAME;

		data[0].data = (void*)"localhost1";

		data[1].type = GNUTLS_DT_KEY_PURPOSE_OID;

		data[1].data = (void*)GNUTLS_KP_TLS_WWW_SERVER;

		gnutls_certificate_get_peers(client, &cert_list_size);

		if (cert_list_size < 2) {

			fprintf(stderr, "received a certificate list of %d!\n", cert_list_size);

			exit(1);

		}

		ret = gnutls_certificate_verify_peers(client, data, 2, &status);

		if (ret < 0) {

			fprintf(stderr, "could not verify certificate: %s\n", gnutls_strerror(ret));

			exit(1);

		}

		if (status == 0) {

			fprintf(stderr, "should not have accepted!\n");

			exit(1);

		}

		data[0].type = GNUTLS_DT_DNS_HOSTNAME;

		data[0].data = (void*)"localhost";

		ret = gnutls_certificate_verify_peers(client, data, 2, &status);

		if (ret < 0) {

			fprintf(stderr, "could not verify certificate: %s\n", gnutls_strerror(ret));

			exit(1);

		}

		if (status != 0) {

			fprintf(stderr, "could not verify certificate: %.4x\n", status);

			exit(1);

		}

	}

	if (test && test->exp_etm) {

		ret = gnutls_session_ext_master_secret_status(client);

		if (ret != 1) {

			fprintf(stderr, "Extended master secret wasn't negotiated by default (client ret: %d)\n", ret);

			exit(1);

		}

		ret = gnutls_session_ext_master_secret_status(server);

		if (ret != 1) {

			fprintf(stderr, "Extended master secret wasn't negotiated by default (server ret: %d)\n", ret);

			exit(1);

		}

	}

	gnutls_bye(client, GNUTLS_SHUT_RDWR);

	gnutls_bye(server, GNUTLS_SHUT_RDWR);

	gnutls_deinit(client);

	gnutls_certificate_free_credentials(clientx509cred);

 cleanup:

	gnutls_priority_deinit(cache);

	gnutls_deinit(server);

	gnutls_certificate_free_credentials(serverx509cred);

	gnutls_global_deinit();

	reset_buffers();

}

struct test_st tests[] = {

	{

		.name = "additional flag",

		.def_prio = "NORMAL",

		.add_prio = "%FORCE_ETM",

		.exp_err = 0

	},

	{

		.name = "additional flag typo1",

		.def_prio = "NORMAL",

		.add_prio = ":%FORCE_ETM",

		.exp_err = GNUTLS_E_INVALID_REQUEST,

		.err_pos = 0

	},

	{

		.name = "additional flag typo2",

		.def_prio = "NORMAL",

		.add_prio = "%FORCE_ETM::%NO_TICKETS",

		.exp_err = GNUTLS_E_INVALID_REQUEST,

		.err_pos = 11

	},

	{

		.name = "additional flag typo3",

		.def_prio = "NORMAL",

		.add_prio = "%FORCE_ETM:%%NO_TICKETS",

		.exp_err = GNUTLS_E_INVALID_REQUEST,

		.err_pos = 11

	},

	{

		.name = "additional flag typo3 (with resolved def prio)",

		.def_prio = "@HELLO",

		.add_prio = "%FORCE_ETM:%%NO_TICKETS",

		.exp_err = GNUTLS_E_INVALID_REQUEST,

		.err_pos = 0

	},

	{

		.name = "additional flag for version (functional)",

		.def_prio = "NORMAL",

		.add_prio = "-VERS-ALL:+VERS-TLS1.1",

		.exp_etm = 1,

		.exp_err = 0,

		.exp_vers = GNUTLS_TLS1_1

	}

};

void doit(void)

{

	start(NULL);

	for (unsigned i=0;i

		start(&tests[i]);

	}

}