/*

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

 * Copyright (C) 2017 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 General Public License

 * along with GnuTLS.  If not, see <https://www.gnu.org/licenses/>.

 *

 */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <sys/types.h>

#if !defined(_WIN32)

#include <sys/wait.h>

#endif

#include "utils.h"

#include <gnutls/gnutls.h>

#include <gnutls/crypto.h>

/* This tests the operation of the provided random generator

 * to try() function. It will check whether it can perform more than

 * 16k iterations, and provide a substantial amount of data.

 */

static void try(int rnd)

{

	unsigned char buf1[64];

	unsigned char *tmp;

	int ret;

	unsigned i;

	global_init();

	for (i = 0; i <= 65539; i++) {

		ret = gnutls_rnd(rnd, buf1, sizeof(buf1));

		if (ret < 0) {

			fail("Error iterating RNG-%d more than %u times\n", rnd, i);

			exit(1);

		}

	}

#define TMP_SIZE (65*1024)

	tmp = malloc(TMP_SIZE);

	if (tmp == NULL) {

		fail("memory error\n");

		exit(1);

	}

	for (i = 0; i <= 65539; i++) {

		ret = gnutls_rnd(rnd, tmp, TMP_SIZE);

		if (ret < 0) {

			fail("Error iterating RNG-%d more than %u times for %d data\n", rnd, i, TMP_SIZE);

			exit(1);

		}

	}

	free(tmp);

	gnutls_global_deinit();

}