/*

 * Copyright (C) 2019 Red Hat, Inc.

 *

 * 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 "utils.h"

#include "eagain-common.h"

#include "cert-common.h"

/* This tests TLS1.3 and gnutls_session_get_data2() when no

 * callback with gnutls_transport_set_pull_timeout_function()

 * is set */

const char *side;

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

{

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

}

static time_t mytime(time_t * t)

{

	time_t then = 1461671166;

	if (t)

		*t = then;

	return then;

}

static ssize_t

server_pull_fail(gnutls_transport_ptr_t tr, void *data, size_t len)

{

	fail("unexpected call to pull callback detected\n");

	return -1;

}

void doit(void)

{

	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;

	gnutls_datum_t data;

	char buf[128];

	/* General init. */

	global_init();

	gnutls_global_set_log_function(tls_log_func);

	if (debug)

		gnutls_global_set_log_level(6);

	gnutls_global_set_time_function(mytime);

	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);

	assert(gnutls_set_default_priority(server)>=0);

	gnutls_transport_set_push_function(server, server_push);

	gnutls_transport_set_pull_function(server, server_pull);

	gnutls_transport_set_ptr(server, server);

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

	assert(gnutls_certificate_set_x509_trust_mem(clientx509cred, &ca_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, "NORMAL:-VERS-ALL:+VERS-TLS1.3", 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);

	ret = gnutls_record_recv(client, buf, sizeof(buf));

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

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

	}

	gnutls_transport_set_pull_function(server, server_pull_fail);

	ret = gnutls_session_get_data2(client, &data);

	if (ret != 0) {

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

	}

	gnutls_free(data.data);

	gnutls_transport_set_pull_function(server, server_pull);

	ret = gnutls_record_recv(client, buf, sizeof(buf));

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

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

	}

	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();

}