/*

 * 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, 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/abstract.h>

#include <gnutls/crypto.h>

#include <signal.h>

#include <unistd.h>

#include <assert.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"

#if !defined(HAVE___REGISTER_ATFORK)

void doit(void)

{

	exit(77);

}

#else

#ifdef _WIN32

# define P11LIB "libpkcs11mock1.dll"

#else

# include <dlfcn.h>

# define P11LIB "libpkcs11mock1.so"

#endif

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

 * with the same key when PKCS#11 is in use.

 */

#include "../cert-common.h"

#define PIN "1234"

static const gnutls_datum_t testdata = {(void*)"test test", 9};

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

{

	fprintf(stderr, "|<%d>| %s", level, str);

}

static

int pin_func(void* userdata, int attempt, const char* url, const char *label,

		unsigned flags, char *pin, size_t pin_max)

{

	if (attempt == 0) {

		strcpy(pin, PIN);

		return 0;

	}

	return -1;

}

typedef struct thread_data_st {

	gnutls_privkey_t pkey;

	pthread_t id;

} thread_data_st;

static void *start_thread(void *arg)

{

	thread_data_st *data = arg;

	int ret;

	gnutls_datum_t sig;

	ret = gnutls_privkey_sign_data(data->pkey, GNUTLS_DIG_SHA256, 0, &testdata, &sig);

	if (ret < 0)

		pthread_exit((void*)-2);

	gnutls_free(sig.data);

	pthread_exit(0);

}

#define MAX_THREADS 48

static

void do_thread_stuff(gnutls_privkey_t pkey)

{

	int ret;

	thread_data_st *data;

	unsigned i;

	void *retval;

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

	if (data == NULL)

		abort();

	for (i=0;i

		data[i].pkey = pkey;

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

		if (ret != 0) {

			fail("Error creating thread\n");

		}

	}

	for (i=0;i

		ret = pthread_join(data[i].id, &retval);

		if (ret != 0 || retval != NULL) {

			fail("Error in %d: %p\n", (int)data[i].id, retval);

		}

	}

	free(data);

}

void doit(void)

{

	int ret, status;

	const char *lib;

	gnutls_privkey_t pkey;

	pid_t pid;

	signal(SIGPIPE, SIG_IGN);

	gnutls_pkcs11_set_pin_function(pin_func, NULL);

	gnutls_global_set_log_function(tls_log_func);

	if (debug)

		gnutls_global_set_log_level(4711);

	lib = getenv("P11MOCKLIB1");

	if (lib == NULL)

		lib = P11LIB;

	ret = gnutls_pkcs11_init(GNUTLS_PKCS11_FLAG_MANUAL, NULL);

	if (ret != 0) {

		fail("%d: %s\n", ret, gnutls_strerror(ret));

		exit(1);

	}

	ret = gnutls_pkcs11_add_provider(lib, NULL);

	if (ret != 0) {

		fail("%d: %s\n", ret, gnutls_strerror(ret));

		exit(1);

	}

	assert(gnutls_privkey_init(&pkey) == 0);

	ret = gnutls_privkey_import_url(pkey, "pkcs11:object=test", GNUTLS_PKCS11_OBJ_FLAG_LOGIN);

	if (ret < 0) {

		fprintf(stderr, "error in %d: %s\n", __LINE__, gnutls_strerror(ret));

		exit(1);

	}

	/* fork to force PKCS#11 reinitialization */

	pid = fork();

	if (pid == -1) {

		exit(1);

	} else if (pid) {

                waitpid(pid, &status, 0);

                check_wait_status(status);

                goto cleanup;

	}

	do_thread_stuff(pkey);

 cleanup:

	gnutls_privkey_deinit(pkey);

}

#endif