/*

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

 *

 * Author: Simon Josefsson

 *

 * 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 <errno.h>

#include <gnutls/gnutls.h>

#include "utils.h"

#include "eagain-common.h"

/* Tests whether the verify callbacks are operational.

 * In addition gnutls_handshake_get_last_in() and gnutls_handshake_get_last_out() 

 * are tested.

 */

const char *side;

static int client_ok = 0, server_ok = 0;

static int pch_ok = 0;

static int client_callback(gnutls_session_t session)

{

	client_ok = 1;

	return 0;

}

static void verify_alpn(gnutls_session_t session)

{

	int ret;

	gnutls_datum_t selected;

	char str[64];

	snprintf(str, sizeof(str), "myproto");

	ret = gnutls_alpn_get_selected_protocol(session, &selected);

	if (ret < 0) {

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

		exit(1);

	}

	if (strlen(str) != selected.size || memcmp(str, selected.data, selected.size) != 0) {

		fail("expected protocol %s, got %.*s\n", str, selected.size, selected.data);

		exit(1);

	}

	if (debug)

		success("ALPN got: %s\n", str);

}

static int post_client_hello_callback(gnutls_session_t session)

{

	/* verify that the post-client-hello callback has access to ALPN data */

	verify_alpn(session);

	pch_ok = 1;

	return 0;

}

unsigned int msg_order[] = {

	GNUTLS_HANDSHAKE_CLIENT_HELLO,

	GNUTLS_HANDSHAKE_SERVER_HELLO,

	GNUTLS_HANDSHAKE_CERTIFICATE_PKT,

	GNUTLS_HANDSHAKE_SERVER_KEY_EXCHANGE,

	GNUTLS_HANDSHAKE_CERTIFICATE_REQUEST,

	GNUTLS_HANDSHAKE_SERVER_HELLO_DONE,

	GNUTLS_HANDSHAKE_CERTIFICATE_PKT,

	GNUTLS_HANDSHAKE_CLIENT_KEY_EXCHANGE,

	GNUTLS_HANDSHAKE_FINISHED,

	GNUTLS_HANDSHAKE_FINISHED,

};

static int handshake_callback(gnutls_session_t session, unsigned int htype,

			      unsigned post, unsigned int incoming, const gnutls_datum_t *rawmsg)

{

	static unsigned idx = 0;

	unsigned int msg;

	if (msg_order[idx] != htype) {

		fail("%s: %s, expected %s\n",

		     incoming != 0 ? "Received" : "Sent",

		     gnutls_handshake_description_get_name(htype),

		     gnutls_handshake_description_get_name(msg_order

							   [idx]));

		exit(1);

	}

	idx++;

	if (incoming != 0) {

		msg = gnutls_handshake_get_last_in(session);

		if (msg != htype) {

			fail("last input message was not recorded (exp: %d, found: %d) \n", msg, htype);

			exit(1);

		}

	} else {

		msg = gnutls_handshake_get_last_out(session);

		if (msg != htype) {

			fail("last output message was not recorded (exp: %d, found: %d) \n", msg, htype);

			exit(1);

		}

	}

	return 0;

}

static int server_callback(gnutls_session_t session)

{

	server_ok = 1;

	if (gnutls_protocol_get_version(session) == GNUTLS_TLS1_2) {

		if (gnutls_handshake_get_last_in(session) !=

		    GNUTLS_HANDSHAKE_CERTIFICATE_PKT) {

			fail("client's last input message was unexpected\n");

			exit(1);

		}

		if (gnutls_handshake_get_last_out(session) !=

		    GNUTLS_HANDSHAKE_SERVER_HELLO_DONE) {

			fail("client's last output message was unexpected\n");

			exit(1);

		}

	}

	return 0;

}

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

{

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

}

static unsigned char server_cert_pem[] =

    "-----BEGIN CERTIFICATE-----\n"

    "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"

    "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"

    "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"

    "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"

    "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"

    "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"

    "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"

    "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"

    "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"

    "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"

    "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"

    "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"

    "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";

const gnutls_datum_t server_cert = { server_cert_pem,

	sizeof(server_cert_pem)

};

static unsigned char server_key_pem[] =

    "-----BEGIN RSA PRIVATE KEY-----\n"

    "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"

    "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"

    "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"

    "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"

    "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"

    "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"

    "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"

    "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"

    "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"

    "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"

    "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"

    "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"

    "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"

    "-----END RSA PRIVATE KEY-----\n";

const gnutls_datum_t server_key = { server_key_pem,

	sizeof(server_key_pem)

};

static void append_alpn(gnutls_session_t session)

{

	gnutls_datum_t protocol;

	int ret;

	char str[64];

	snprintf(str, sizeof(str), "myproto");

	protocol.data = (void*)str;

	protocol.size = strlen(str);

	ret = gnutls_alpn_set_protocols(session, &protocol, 1, 0);

	if (ret < 0) {

		gnutls_perror(ret);

		exit(1);

	}

}

static

void start(const char *prio, unsigned check_order)

{

	/* 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;

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

	client_ok = 0;

	server_ok = 0;

	pch_ok = 0;

	/* General init. */

	global_init();

	gnutls_global_set_log_function(tls_log_func);

	if (debug)

		gnutls_global_set_log_level(2);

	/* Init server */

	gnutls_certificate_allocate_credentials(&serverx509cred);

	gnutls_certificate_set_x509_key_mem(serverx509cred,

					    &server_cert, &server_key,

					    GNUTLS_X509_FMT_PEM);

	gnutls_init(&server, GNUTLS_SERVER);

	gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE,

				serverx509cred);

	gnutls_priority_set_direct(server, prio, NULL);

	gnutls_transport_set_push_function(server, server_push);

	gnutls_transport_set_pull_function(server, server_pull);

	gnutls_transport_set_ptr(server, server);

	gnutls_certificate_set_verify_function(serverx509cred,

						server_callback);

	gnutls_certificate_server_set_request(server, GNUTLS_CERT_REQUEST);

	gnutls_handshake_set_post_client_hello_function(server,

							post_client_hello_callback);

	if (check_order)

		gnutls_handshake_set_hook_function(server, GNUTLS_HANDSHAKE_ANY,

						   GNUTLS_HOOK_POST,

						   handshake_callback);

	append_alpn(server);

	/* Init client */

	gnutls_certificate_allocate_credentials(&clientx509cred);

	gnutls_init(&client, GNUTLS_CLIENT);

	gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,

				clientx509cred);

	gnutls_priority_set_direct(client, prio, NULL);

	gnutls_transport_set_push_function(client, client_push);

	gnutls_transport_set_pull_function(client, client_pull);

	gnutls_transport_set_ptr(client, client);

	gnutls_certificate_set_verify_function(clientx509cred,

						client_callback);

	append_alpn(client);

	HANDSHAKE(client, server);

	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();

	if (pch_ok == 0)

		fail("Post client hello callback wasn't called\n");

	if (server_ok == 0)

		fail("Server certificate verify callback wasn't called\n");

	if (client_ok == 0)

		fail("Client certificate verify callback wasn't called\n");

	reset_buffers();

}

void doit(void)

{

	start("NORMAL:-VERS-ALL:+VERS-TLS1.2", 1);

	start("NORMAL:-VERS-ALL:+VERS-TLS1.3", 0);

	start("NORMAL", 0);

}