/*

 * Copyright (C) 2015 Red Hat, Inc.

 * Copyright (C) 2019 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 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 <gnutls/abstract.h>

#include <gnutls/x509.h>

#include "utils.h"

#include "eagain-common.h"

#include "cert-common.h"

#include "ocsp-common.h"

/* This tests gnutls_certificate_verify_peers2() to verify a client certificate

 * by server. */

const char *side;

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

{

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

}

static void start(const char *prio)

{

	int ret;

	/* Server stuff. */

	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;

	int cret = GNUTLS_E_AGAIN;

	unsigned index1;

	success("testing %s\n", prio);

	/* General init. */

	global_init();

	gnutls_global_set_log_function(tls_log_func);

	if (debug)

		gnutls_global_set_log_level(2);

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

	ret = gnutls_certificate_set_x509_key_mem2(serverx509cred, &server_ca3_localhost6_cert,

						   &server_ca3_key, GNUTLS_X509_FMT_PEM, NULL, 0);

	assert(ret>=0);

	index1 = ret;

	ret = gnutls_certificate_set_ocsp_status_request_mem(serverx509cred, &ocsp_ca3_localhost6_unknown_pem,

							     index1, GNUTLS_X509_FMT_PEM);

	assert(ret>=0);

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

	gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE, serverx509cred);

	assert(gnutls_priority_set_direct(server,

				   prio, NULL) >= 0);

	gnutls_transport_set_push_function(server, server_push);

	gnutls_transport_set_pull_function(server, server_pull);

	gnutls_transport_set_ptr(server, server);

	gnutls_certificate_server_set_request(server, GNUTLS_CERT_REQUEST);

	assert(gnutls_certificate_allocate_credentials(&clientx509cred) >= 0);

	assert(gnutls_certificate_set_x509_trust_mem(clientx509cred, &ca3_cert,

						     GNUTLS_X509_FMT_PEM) >= 0);

	ret = gnutls_certificate_set_x509_key_mem2(clientx509cred, &cli_ca3_cert_chain,

						   &cli_ca3_key, GNUTLS_X509_FMT_PEM, NULL, 0);

	assert(ret>=0);

	index1 = ret;

	ret = gnutls_certificate_set_ocsp_status_request_mem(clientx509cred, &ocsp_cli_ca3_good_pem,

							     index1, GNUTLS_X509_FMT_PEM);

	assert(ret>=0);

	assert(gnutls_certificate_set_x509_trust_mem(clientx509cred, &ca3_cert,

						     GNUTLS_X509_FMT_PEM) >= 0);

	assert(gnutls_init(&client, GNUTLS_CLIENT) >= 0);

	assert(gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,

				      clientx509cred) >= 0);

	assert(gnutls_priority_set_direct(client, prio, NULL)>=0);

	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 verify peers in server side */

	{

		unsigned status;

		ret = gnutls_certificate_verify_peers2(server, &status);

		if (ret < 0) {

			fail("could not verify client certificate: %s\n",

				gnutls_strerror(ret));

		}

		if (status == 0)

			fail("No CAs present but succeeded!\n");

		assert(gnutls_certificate_set_x509_trust_mem(serverx509cred, &ca3_cert,

							     GNUTLS_X509_FMT_PEM) >= 0);

		ret = gnutls_certificate_verify_peers2(server, &status);

		if (ret < 0) {

			fail("could not verify client certificate: %s\n",

				gnutls_strerror(ret));

		}

		if (status != 0)

			fail("Verification should have succeeded!\n");

		/* under TLS1.3 the client can send OCSP responses too */

		if (gnutls_protocol_get_version(server) == GNUTLS_TLS1_3) {

			ret = gnutls_ocsp_status_request_is_checked(server, GNUTLS_OCSP_SR_IS_AVAIL);

			assert(ret >= 0);

			ret = gnutls_ocsp_status_request_is_checked(server, 0);

			assert(ret >= 0);

		} else {

			ret = gnutls_ocsp_status_request_is_checked(server, GNUTLS_OCSP_SR_IS_AVAIL);

			assert(ret == 0);

			ret = gnutls_ocsp_status_request_is_checked(server, 0);

			assert(ret == 0);

		}

	}

	gnutls_bye(client, GNUTLS_SHUT_RDWR);

	gnutls_bye(server, GNUTLS_SHUT_RDWR);

	gnutls_deinit(client);

	gnutls_deinit(server);

	gnutls_certificate_free_credentials(serverx509cred);

	gnutls_certificate_free_credentials(clientx509cred);

	gnutls_global_deinit();

	reset_buffers();

}

void doit(void)

{

	start("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3");

	start("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.2");

	start("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.1");

	start("NORMAL");

}