/*

 * Copyright (C) 2008-2014 Free Software Foundation, Inc.

 *

 * Author: Simon Josefsson, 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 <unistd.h>

#include <gnutls/gnutls.h>

#include <gnutls/x509.h>

#include <gnutls/x509-ext.h>

#include "../utils.h"

#include "../test-chains.h"

#include "softhsm.h"

#define CONFIG "softhsm-issuer.config"

/* GnuTLS internally calls time() to find out the current time when

   verifying certificates.  To avoid a time bomb, we hard code the

   current time.  This should work fine on systems where the library

   call to time is resolved at run-time.  */

static time_t mytime(time_t * t)

{

	time_t then = 1256803113;

	if (t)

		*t = then;

	return then;

}

#define PIN "1234"

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)

{

	char buf[128];

	int exit_val = 0;

	int ret;

	unsigned j;

	const char *lib, *bin;

	gnutls_x509_crt_t issuer = NULL;

	gnutls_x509_trust_list_t tl;

	gnutls_x509_crt_t certs[MAX_CHAIN];

	gnutls_x509_crt_t ca;

	gnutls_datum_t tmp;

	int idx = -1;

	/* The overloading of time() seems to work in linux (ELF?)

	 * systems only. Disable it on windows.

	 */

#ifdef _WIN32

	exit(77);

#endif

	for (j=0;;j++) {

		if (chains[j].name == NULL)

			break;

		if (strcmp(chains[j].name, "verisign.com v1 ok") == 0) {

			idx = j;

			break;

		}

	}

	if (idx == -1) {

		fail("could not find proper chain\n");

		exit(1);

	}

	bin = softhsm_bin();

	lib = softhsm_lib();

	ret = global_init();

	if (ret != 0) {

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

		exit(1);

	}

	gnutls_pkcs11_set_pin_function(pin_func, NULL);

	gnutls_global_set_time_function(mytime);

	gnutls_global_set_log_function(tls_log_func);

	if (debug)

		gnutls_global_set_log_level(4711);

	/* write softhsm.config */

	set_softhsm_conf(CONFIG);

	snprintf(buf, sizeof(buf), "%s --init-token --slot 0 --label test --so-pin "PIN" --pin "PIN, bin);

	system(buf);

	ret = gnutls_pkcs11_add_provider(lib, "trusted");

	if (ret < 0) {

		fprintf(stderr, "gnutls_x509_crt_init: %s\n",

			gnutls_strerror(ret));

		exit(1);

	}

	for (j = 0; chains[idx].chain[j]; j++) {

		if (debug > 2)

			printf("\tAdding certificate %d...",

			       (int) j);

		ret = gnutls_x509_crt_init(&certs[j]);

		if (ret < 0) {

			fprintf(stderr,

				"gnutls_x509_crt_init[%d,%d]: %s\n",

				(int) 3, (int) j,

				gnutls_strerror(ret));

			exit(1);

		}

		tmp.data = (unsigned char *) chains[idx].chain[j];

		tmp.size = strlen(chains[idx].chain[j]);

		ret =

		    gnutls_x509_crt_import(certs[j], &tmp,

					   GNUTLS_X509_FMT_PEM);

		if (debug > 2)

			printf("done\n");

		if (ret < 0) {

			fprintf(stderr,

				"gnutls_x509_crt_import[%s,%d]: %s\n",

				chains[idx].name, (int) j,

				gnutls_strerror(ret));

			exit(1);

		}

		gnutls_x509_crt_print(certs[j],

				      GNUTLS_CRT_PRINT_ONELINE,

				      &tmp);

		if (debug)

			printf("\tCertificate %d: %.*s\n", (int) j,

			       tmp.size, tmp.data);

		gnutls_free(tmp.data);

	}

	if (debug > 2)

		printf("\tAdding CA certificate...");

	ret = gnutls_x509_crt_init(&ca);

	if (ret < 0) {

		fprintf(stderr, "gnutls_x509_crt_init: %s\n",

			gnutls_strerror(ret));

		exit(1);

	}

	tmp.data = (unsigned char *) *chains[idx].ca;

	tmp.size = strlen(*chains[idx].ca);

	ret =

	    gnutls_x509_crt_import(ca, &tmp, GNUTLS_X509_FMT_PEM);

	if (ret < 0) {

		fprintf(stderr, "gnutls_x509_crt_import: %s\n",

			gnutls_strerror(ret));

		exit(1);

	}

	if (debug > 2)

		printf("done\n");

	gnutls_x509_crt_print(ca, GNUTLS_CRT_PRINT_ONELINE, &tmp);

	if (debug)

		printf("\tCA Certificate: %.*s\n", tmp.size,

		       tmp.data);

	gnutls_free(tmp.data);

	if (debug)

		printf("\tVerifying...");

	/* initialize softhsm token */

	ret = gnutls_pkcs11_token_init(SOFTHSM_URL, PIN, "test");

	if (ret < 0) {

		fail("gnutls_pkcs11_token_init\n");

		exit(1);

	}

	/* write CA certificate to softhsm */

	ret = gnutls_pkcs11_copy_x509_crt(SOFTHSM_URL, ca, "test-ca", GNUTLS_PKCS11_OBJ_FLAG_MARK_TRUSTED|GNUTLS_PKCS11_OBJ_FLAG_LOGIN_SO);

	if (ret < 0) {

		fail("gnutls_pkcs11_copy_x509_crt: %s\n", gnutls_strerror(ret));

		exit(1);

	}

	gnutls_x509_trust_list_init(&tl, 0);

	ret = gnutls_x509_trust_list_add_trust_file(tl, SOFTHSM_URL, NULL, 0, 0, 0);

	if (ret < 0) {

		fail("gnutls_x509_trust_list_add_trust_file\n");

		exit(1);

	}

	/* extract the issuer of the certificate */

	issuer = NULL;

	ret = gnutls_x509_trust_list_get_issuer(tl, certs[2], &issuer, GNUTLS_TL_GET_COPY);

	if (ret < 0) {

		fail("error in gnutls_x509_trust_list_get_issuer\n");

		exit(1);

	}

	if (issuer == NULL) {

		fail("error in gnutls_x509_trust_list_get_issuer return value\n");

		exit(1);

	}

	gnutls_x509_crt_deinit(issuer);

	/* extract the issuer of the certificate using the non-thread-safe approach */

	issuer = NULL;

	ret = gnutls_x509_trust_list_get_issuer(tl, certs[2], &issuer, 0);

	if (ret < 0) {

		fail("error in gnutls_x509_trust_list_get_issuer\n");

		exit(1);

	}

	if (issuer == NULL) {

		fail("error in gnutls_x509_trust_list_get_issuer return value\n");

		exit(1);

	}

	/* extract (again) the issuer of the certificate - check for any leaks */

	ret = gnutls_x509_trust_list_get_issuer(tl, certs[2], &issuer, 0);

	if (ret < 0) {

		fail("error in gnutls_x509_trust_list_get_issuer\n");

		exit(1);

	}

	/* Check gnutls_x509_trust_list_get_raw_issuer_by_dn */

	ret = gnutls_x509_crt_get_raw_issuer_dn(certs[2], &tmp);

	if (ret < 0) {

		fail("error in gnutls_x509_crt_get_raw_issuer_dn: %s\n", gnutls_strerror(ret));

		exit(1);

	}

	ret = gnutls_x509_trust_list_get_issuer_by_dn(tl, &tmp, &issuer, 0);

	gnutls_free(tmp.data);

	if (ret < 0) {

		fail("error in gnutls_x509_trust_list_get_issuer\n");

		exit(1);

	}

	if (issuer == NULL) {

		fail("error in gnutls_x509_trust_list_get_issuer_by_dn return value\n");

		exit(1);

	}

	gnutls_x509_crt_deinit(issuer);

	if (debug)

		printf("\tCleanup...");

	gnutls_x509_trust_list_deinit(tl, 0);

	gnutls_x509_crt_deinit(ca);

	for (j = 0; chains[idx].chain[j]; j++)

		gnutls_x509_crt_deinit(certs[j]);

	if (debug)

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

	gnutls_global_deinit();

	if (debug)

		printf("Exit status...%d\n", exit_val);

	remove(CONFIG);

	exit(exit_val);

}