/*

 * Copyright (C) 2016 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 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>

/* In this test we check whether the server will bail out after receiving

 * a bunch of warning alerts without a client hello.

 */

#if defined(_WIN32)

/* socketpair isn't supported on Win32. */

int main(int argc, char **argv)

{

	exit(77);

}

#else

#include <string.h>

#include <sys/types.h>

#include <sys/socket.h>

#if !defined(_WIN32)

#include <sys/wait.h>

#endif

#include <unistd.h>

#include <assert.h>

#include <gnutls/gnutls.h>

#include "utils.h"

#include "cert-common.h"

pid_t child;

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

{

	fprintf(stderr, "%s |<%d>| %s", child ? "server" : "client", level,

		str);

}

static unsigned char tls_alert[] = 

	"\x15\x03\x03\x00\x02\x00\x0A";

static void client(int sd)

{

	int ret;

	unsigned i;

	/* send a list of warning alerts */

	for (i=0;i<128;i++) {

		ret = send(sd, tls_alert, sizeof(tls_alert)-1, 0);

		if (ret < 0)

			fail("error sending hello\n");

	}

	close(sd);

}

static void server(int sd)

{

	gnutls_certificate_credentials_t x509_cred;

	gnutls_session_t session;

	int ret;

	unsigned loops;

	/* this must be called once in the program

	 */

	global_init();

	gnutls_global_set_log_function(tls_log_func);

	if (debug)

		gnutls_global_set_log_level(6);

	gnutls_certificate_allocate_credentials(&x509_cred);

	gnutls_certificate_set_x509_trust_mem(x509_cred, &ca3_cert,

					      GNUTLS_X509_FMT_PEM);

	gnutls_certificate_set_x509_key_mem(x509_cred, &server_ca3_localhost_cert,

					    &server_ca3_key,

					    GNUTLS_X509_FMT_PEM);

	if (debug)

		success("Launched, generating DH parameters...\n");

	gnutls_init(&session, GNUTLS_SERVER);

	/* avoid calling all the priority functions, since the defaults

	 * are adequate.

	 */

	assert(gnutls_priority_set_direct(session, "NORMAL:-VERS-ALL:+VERS-TLS1.2", NULL)>=0);

	gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);

	gnutls_transport_set_int(session, sd);

	loops = 0;

	do {

		ret = gnutls_handshake(session);

		loops++;

		if (loops > 64)

			fail("Too many loops in the handshake!\n");

	} while (ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_WARNING_ALERT_RECEIVED);

	if (ret != GNUTLS_E_UNEXPECTED_PACKET) {

		fail("server: Handshake didn't fail with expected code (failed with %d)\n", ret);

	}

	close(sd);

	gnutls_deinit(session);

	gnutls_certificate_free_credentials(x509_cred);

	gnutls_global_deinit();

	if (debug)

		success("server: finished\n");

}

void doit(void)

{

	int sockets[2];

	int err;

	err = socketpair(AF_UNIX, SOCK_STREAM, 0, sockets);

	if (err == -1) {

		perror("socketpair");

		fail("socketpair failed\n");

		return;

	}

	child = fork();

	if (child < 0) {

		perror("fork");

		fail("fork");

		return;

	}

	if (child) {

		int status;

		server(sockets[0]);

		wait(&status);

		check_wait_status(status);

	} else {

		client(sockets[1]);

		exit(0);

	}

}

#endif				/* _WIN32 */