/*

 * Copyright (C) 2016-2017 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 <string.h>

#include <assert.h>

#include <unistd.h>

#include <sys/types.h>

#include <sys/wait.h>

#include <gnutls/gnutls.h>

#include <gnutls/x509.h>

#include <gnutls/abstract.h>

#include "utils.h"

/* Tests whether a gnutls_privkey_t will continue to work after

 * a fork(), when gnutls_pkcs11_reinit() is manually called. */

#if defined(HAVE___REGISTER_ATFORK)

#define PIN "1234"

#ifdef _WIN32

# define P11LIB "libpkcs11mock1.dll"

#else

# include <dlfcn.h>

# define P11LIB "libpkcs11mock1.so"

#endif

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;

}

void doit(void)

{

	int ret;

	const char *lib;

	gnutls_privkey_t key;

	gnutls_datum_t sig = {NULL, 0}, data;

	pid_t pid;

	data.data = (void*)"\x38\x17\x0c\x08\xcb\x45\x8f\xd4\x87\x9c\x34\xb6\xf6\x08\x29\x4c\x50\x31\x2b\xbb";

	data.size = 20;

	ret = global_init();

	if (ret != 0) {

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

		exit(1);

	}

	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);

	}

	ret = gnutls_privkey_init(&key);

	assert(ret>=0);

	gnutls_privkey_set_pin_function(key, pin_func, NULL);

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

	if (ret < 0) {

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

		exit(1);

	}

	ret = gnutls_privkey_sign_hash(key, GNUTLS_DIG_SHA1, 0, &data, &sig);

	if (ret < 0) {

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

		exit(1);

	}

	gnutls_free(sig.data);

	sig.data = NULL;

	pid = fork();

	if (pid != 0) {

		int status;

		assert(waitpid(pid, &status, 0) >= 0);

		if (WEXITSTATUS(status) != 0) {

			fail("child return status was unexpected: %d\n", WEXITSTATUS(status));

			exit(1);

		}

	} else { /* child */

		ret = gnutls_pkcs11_reinit();

		assert(ret == 0);

		ret = gnutls_privkey_sign_hash(key, GNUTLS_DIG_SHA1, 0, &data, &sig);

		if (ret < 0) {

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

			exit(1);

		}

		gnutls_free(sig.data);		

		gnutls_privkey_deinit(key);

		gnutls_pkcs11_deinit();

		gnutls_global_deinit();

		exit(0);

	}

	if (debug)

		printf("done\n\n\n");

	gnutls_privkey_deinit(key);

	gnutls_pkcs11_deinit();

	gnutls_global_deinit();

}

#else

void doit(void)

{

	exit(77);

}

#endif