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/*
* 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, see <https://www.gnu.org/licenses/>.
*/
#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 multiple 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 < MAX_THREADS; i++) {
data[i].level = level;
ret = pthread_create(&data[i].id, NULL, start_thread, &data[i]);
if (ret != 0) {
abort();
}
}
for (i = 0; i < MAX_THREADS; i++) {
pthread_join(data[i].id, NULL);
for (j = 0; j < MAX_THREADS; 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 */
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