/*

 * Copyright (C) 2014-2016 Nikos Mavrogiannopoulos

 * 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, write to the Free Software Foundation,

 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA

 */

/* This test checks the behavior of gnutls_certificate_set_x509_key_file2()

 * when the GNUTLS_CERTIFICATE_API_V2 is set */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include <stdio.h>

#include <stdlib.h>

#include <assert.h>

#include <gnutls/gnutls.h>

#include <gnutls/x509.h>

#include "cert-common.h"

#include "utils.h"

static time_t mytime(time_t * t)

{

	time_t then = 1470002400;

	if (t)

		*t = then;

	return then;

}

static void compare(const gnutls_datum_t *der, const void *ipem)

{

	gnutls_datum_t pem = {(void*)ipem, strlen((char*)ipem)};

	gnutls_datum_t new_der;

	int ret;

	ret = gnutls_pem_base64_decode2("CERTIFICATE", &pem, &new_der);

	if (ret < 0) {

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

	}

	if (der->size != new_der.size || memcmp(der->data, new_der.data, der->size) != 0) {

		fail("error in %d: %s\n", __LINE__, "cert don't match");

		exit(1);

	}

	gnutls_free(new_der.data);

	return;

}

static unsigned set_cert(gnutls_certificate_credentials_t xcred, const gnutls_datum_t *key, const gnutls_datum_t *cert)

{

	const char *certfile;

	FILE *fp;

	int ret;

	certfile = get_tmpname(NULL);

	fp = fopen(certfile, "w");

	if (fp == NULL)

		fail("error in fopen\n");

	assert(fwrite(cert->data, 1, cert->size, fp)>0);

	assert(fwrite(key->data, 1, key->size, fp)>0);

	fclose(fp);

	ret = gnutls_certificate_set_x509_key_file2(xcred, certfile, certfile,

						    GNUTLS_X509_FMT_PEM, NULL, 0);

	if (ret < 0)

		fail("set_x509_key_file failed: %s\n", gnutls_strerror(ret));

	/* return index */

	return ret;

}

static void verify_written_cert(gnutls_certificate_credentials_t xcred, unsigned idx, const gnutls_datum_t *cert, unsigned ncerts)

{

	int ret;

	gnutls_datum_t tcert = {NULL, 0};

	/* verify whether the stored certificate match the ones we have */

	ret = gnutls_certificate_get_crt_raw(xcred, idx, 0, &tcert);

	if (ret < 0) {

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

		exit(1);

	}

	compare(&tcert, cert->data);

	if (ncerts > 1) {

		ret = gnutls_certificate_get_crt_raw(xcred, idx, 1, &tcert);

		if (ret < 0) {

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

			exit(1);

		}

		/* skip headers of first cert */

		compare(&tcert, cert->data+2);

	}

}

void doit(void)

{

	int ret;

	gnutls_certificate_credentials_t xcred, clicred;

	const char *keyfile = "./certs/ecc256.pem";

	const char *certfile = "does-not-exist.pem";

	unsigned idx, i;

	global_init();

	assert(gnutls_certificate_allocate_credentials(&xcred) >= 0);

	gnutls_global_set_time_function(mytime);

	track_temp_files();

	/* this will fail */

	ret = gnutls_certificate_set_x509_key_file2(xcred, certfile, keyfile,

						   GNUTLS_X509_FMT_PEM, NULL, 0);

	if (ret != GNUTLS_E_FILE_ERROR)

		fail("set_x509_key_file failed: %s\n", gnutls_strerror(ret));

	gnutls_certificate_free_credentials(xcred);

	assert(gnutls_certificate_allocate_credentials(&xcred) >= 0);

	assert(gnutls_certificate_allocate_credentials(&clicred) >= 0);

	gnutls_certificate_set_flags(xcred, GNUTLS_CERTIFICATE_API_V2);

	ret = gnutls_certificate_set_x509_trust_mem(clicred, &subca3_cert, GNUTLS_X509_FMT_PEM);

	if (ret < 0)

		fail("set_x509_trust_file failed: %s\n", gnutls_strerror(ret));

	success("Testing store of certificates\n");

	idx = set_cert(xcred, &server_ca3_key, &server_ca3_localhost6_cert_chain);

	verify_written_cert(xcred, idx, &server_ca3_localhost6_cert_chain, 2);

	assert(idx == 0);

	success("Tested store of %d\n", idx);

	idx = set_cert(xcred, &server_ca3_key, &server_ca3_localhost_cert);

	verify_written_cert(xcred, idx, &server_ca3_localhost_cert, 1);

	assert(idx == 1);

	success("Tested store of %d\n", idx);

	test_cli_serv(xcred, clicred, "NORMAL", "localhost", NULL, NULL, NULL); /* the DNS name of the first cert */

	idx = set_cert(xcred, &server_key, &server_cert);

	verify_written_cert(xcred, idx, &server_cert, 2);

	assert(idx == 2);

	success("Tested store of %d\n", idx);

	for (i=0;i<16;i++) {

		idx = set_cert(xcred, &server_ecc_key, &server_ecc_cert);

		verify_written_cert(xcred, idx, &server_ecc_cert, 1);

		assert(idx == 3+i);

		success("Tested store of %d\n", idx);

	}

	gnutls_certificate_free_credentials(xcred);

	gnutls_certificate_free_credentials(clicred);

	gnutls_global_deinit();

	delete_temp_files();

}