/*

 * 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>

#include <stdint.h>

#include <string.h>

#include <errno.h>

#include <gnutls/gnutls.h>

#include <gnutls/crypto.h>

#include <signal.h>

#include <unistd.h>

#ifndef _WIN32

# include <netinet/in.h>

# include <sys/types.h>

# include <sys/socket.h>

# include <sys/wait.h>

# include <pthread.h>

#endif

#include "utils.h"

#ifdef _WIN32

void doit(void)

{

	exit(77);

}

#else

/* Tests whether we can use gnutls_rnd() under mutliple threads.

 * We do a basic checking of random data match when gnutls_rnd()

 * is called in parallel.

 */

typedef struct thread_data_st {

	unsigned level;

	pthread_t id;

	char buf[32];

} thread_data_st;

static void *start_thread(void *arg)

{

	thread_data_st *data = arg;

	int ret;

	ret = gnutls_rnd(data->level, data->buf, sizeof(data->buf));

	if (ret < 0) {

		fail("gnutls_rnd: wrong size returned (%d)\n", ret);

	}

	if (debug)

		hexprint(data->buf, sizeof(data->buf));

	pthread_exit(0);

}

#define MAX_THREADS 48

static

void do_thread_stuff(unsigned level)

{

	int ret;

	thread_data_st *data;

	unsigned i, j;

	data = calloc(1, sizeof(thread_data_st)*MAX_THREADS);

	if (data == NULL)

		abort();

	for (i=0;i

		data[i].level = level;

		ret = pthread_create(&data[i].id, NULL, start_thread, &data[i]);

		if (ret != 0) {

			abort();

		}

	}

	for (i=0;i

		pthread_join(data[i].id, NULL);

		for (j=0;j

			if (i!=j) {

				if (memcmp(data[i].buf, data[j].buf, sizeof(data[i].buf)) == 0) {

					fail("identical data found in thread %d and %d\n", i,j);

				}

			}

		}

	}

	free(data);

}

void doit(void)

{

	unsigned i;

	signal(SIGPIPE, SIG_IGN);

	gnutls_global_deinit();

	for (i = GNUTLS_RND_NONCE; i <= GNUTLS_RND_KEY; i++) {

		gnutls_global_init();

		do_thread_stuff(i);

		gnutls_global_deinit();

	}

}

#endif				/* _WIN32 */