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/*
* Copyright (C) 2017 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_fips140_set_mode() and
* gnutls_fips140_mode_enabled() under multiple threads.
*/
typedef struct thread_data_st {
unsigned mode;
unsigned set_mode;
int line;
pthread_t id;
} thread_data_st;
static void *test_set_per_thread(void *arg)
{
thread_data_st *data = arg;
unsigned mode;
int ret;
unsigned char digest[20];
mode = gnutls_fips140_mode_enabled();
if (mode != data->mode)
fail("%d: gnutls_fips140_mode_enabled: wrong mode returned (%d, exp: %d)\n",
data->line, mode, data->mode);
if (data->set_mode)
gnutls_fips140_set_mode(data->set_mode,
GNUTLS_FIPS140_SET_MODE_THREAD);
mode = gnutls_fips140_mode_enabled();
if (mode != data->set_mode) {
fail("%d: gnutls_fips140_mode_enabled: wrong mode returned after set (%d, exp: %d)\n",
data->line, mode, data->set_mode);
}
/* reset mode */
gnutls_fips140_set_mode(data->mode, GNUTLS_FIPS140_SET_MODE_THREAD);
mode = gnutls_fips140_mode_enabled();
if (mode != data->mode)
fail("%d: gnutls_fips140_mode_enabled: wrong mode returned after set (%d, exp: %d)\n",
data->line, mode, data->mode);
ret = gnutls_hmac_fast(GNUTLS_MAC_MD5, "keykeykey", 9, "abcdefgh", 8,
digest);
if (mode == GNUTLS_FIPS140_STRICT && ret >= 0) {
fail("gnutls_hmac_fast(MD5): succeeded in strict mode!\n");
} else if (mode != GNUTLS_FIPS140_STRICT && ret < 0) {
fail("gnutls_hmac_fast(MD5): failed in non-strict mode!\n");
}
/* put to a random state */
gnutls_fips140_set_mode(data->set_mode, GNUTLS_FIPS140_SET_MODE_THREAD);
pthread_exit(0);
}
#define MAX_THREADS 48
void doit(void)
{
int ret;
thread_data_st *data;
unsigned i, j;
unsigned mode;
signal(SIGPIPE, SIG_IGN);
mode = gnutls_fips140_mode_enabled();
if (mode == 0) {
success("We are not in FIPS140 mode\n");
exit(77);
}
data = calloc(1, sizeof(thread_data_st) * MAX_THREADS);
if (data == NULL)
abort();
success("starting threads\n");
/* Test if changes per thread apply, and whether the global
* setting will remain the same */
for (i = 0; i < MAX_THREADS; i++) {
data[i].line = __LINE__;
data[i].mode = mode;
j = i % 3;
if (j == 0)
data[i].set_mode = GNUTLS_FIPS140_LAX;
else if (j == 1)
data[i].set_mode = GNUTLS_FIPS140_LOG;
else
data[i].set_mode = GNUTLS_FIPS140_STRICT;
ret = pthread_create(&data[i].id, NULL, test_set_per_thread,
&data[i]);
if (ret != 0) {
abort();
}
}
success("waiting for threads to finish\n");
for (i = 0; i < MAX_THREADS; i++) {
ret = pthread_join(data[i].id, NULL);
if (ret != 0)
abort();
}
success("checking main process mode\n");
/* main thread should be in the same state */
if (mode != gnutls_fips140_mode_enabled())
fail("gnutls_fips140_mode_enabled: main thread changed mode (%d, exp: %d)\n",
gnutls_fips140_mode_enabled(), mode);
success("checking whether global changes are seen in threads\n");
/* Test if changes globally are visible in threads */
mode = GNUTLS_FIPS140_LOG;
gnutls_fips140_set_mode(mode, 0);
for (i = 0; i < MAX_THREADS; i++) {
data[i].line = __LINE__;
data[i].mode = mode;
data[i].set_mode = GNUTLS_FIPS140_LAX;
ret = pthread_create(&data[i].id, NULL, test_set_per_thread,
&data[i]);
if (ret != 0)
abort();
}
success("waiting for threads to finish\n");
for (i = 0; i < MAX_THREADS; i++) {
ret = pthread_join(data[i].id, NULL);
if (ret != 0)
abort();
}
if (mode != gnutls_fips140_mode_enabled())
fail("gnutls_fips140_mode_enabled: main thread changed mode (%d, exp: %d)\n",
gnutls_fips140_mode_enabled(), mode);
gnutls_fips140_set_mode(GNUTLS_FIPS140_SELFTESTS, 0);
if (GNUTLS_FIPS140_SELFTESTS == gnutls_fips140_mode_enabled())
fail("gnutls_fips140_mode_enabled: setting to GNUTLS_FIPS140_SELFTESTS succeeded!\n");
free(data);
}
#endif /* _WIN32 */
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