/*

 * 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 Lesser General Public License

 * along with this program.  If not, see <https://www.gnu.org/licenses/>

 */

#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 <assert.h>

#ifdef ENABLE_OCSP

#include "ocsp-common.h"

#include "cert-common.h"

#include "utils.h"

/* Tests whether we can send and receive multiple OCSP responses

 * one for each certificate in a chain under TLS 1.3.

 */

static time_t mytime(time_t * t)

{

	time_t then = 1469186559;

	if (t)

		*t = then;

	return then;

}

static const gnutls_datum_t ocsp_resp_localhost[] = {

    { (void*)_ocsp_ca3_localhost_unknown, sizeof(_ocsp_ca3_localhost_unknown) },

    { NULL, 0}};

static const gnutls_datum_t ocsp_resp_localhost6[] = {

    { (void*)_ocsp_ca3_localhost6_unknown, sizeof(_ocsp_ca3_localhost6_unknown) },

    { (void*)_ocsp_subca3_unknown, sizeof(_ocsp_subca3_unknown) }};

typedef struct ctx_st {

	const char *name;

	const gnutls_datum_t *ocsp;

	unsigned nocsp;

} ctx_st;

static ctx_st test_localhost = {"single response", ocsp_resp_localhost, 1};

static ctx_st test_localhost6 = {"two responses", ocsp_resp_localhost6, 2};

#define myfail(fmt, ...) \

	fail("%s: "fmt, test->name, ##__VA_ARGS__)

static void check_response(gnutls_session_t session, void *priv)

{

	int ret;

	gnutls_datum_t resp;

	ctx_st *test = priv;

	unsigned i;

	assert(test != NULL);

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

		ret = gnutls_ocsp_status_request_get2(session, i, &resp);

		if (ret == GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE)

			break;

		if (ret < 0) {

			if (test->ocsp[i].size == 0)

				return;

			myfail("no response was received\n");

		}

		if (test->ocsp[i].size == 0) {

			myfail("not expected response, but received one\n");

		}

		if (resp.size != test->ocsp[i].size) {

			myfail("did not receive the expected response size for %d\n", i);

		}

		if (memcmp(resp.data, test->ocsp[i].data, resp.size) != 0) {

			myfail("did not receive the expected response for %d\n", i);

		}

	}

	if (i != test->nocsp) {

		myfail("The number of OCSP responses received (%d) does not match the expected (%d)\n", i, test->nocsp);

	}

}

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

{

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

}

void doit(void)

{

	int ret;

	gnutls_certificate_credentials_t xcred;

	gnutls_certificate_credentials_t clicred;

	const char *certfile1;

	const char *certfile2;

	char certname1[TMPNAME_SIZE];

	char certname2[TMPNAME_SIZE];

	FILE *fp;

	unsigned index1, index2; /* indexes of certs */

	global_init();

	gnutls_global_set_time_function(mytime);

	gnutls_global_set_log_function(tls_log_func);

	if (debug)

		gnutls_global_set_log_level(4711);

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

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

	gnutls_certificate_set_flags(xcred, GNUTLS_CERTIFICATE_API_V2);

	/* set cert with localhost name */

	certfile1 = get_tmpname(certname1);

	fp = fopen(certfile1, "wb");

	if (fp == NULL)

		fail("error in fopen\n");

	assert(fwrite(server_localhost_ca3_cert_chain_pem, 1, strlen(server_localhost_ca3_cert_chain_pem), fp)>0);

	assert(fwrite(server_ca3_key_pem, 1, strlen((char*)server_ca3_key_pem), fp)>0);

	fclose(fp);

	ret = gnutls_certificate_set_x509_key_file2(xcred, certfile1, certfile1,

						    GNUTLS_X509_FMT_PEM, NULL, 0);

	if (ret < 0)

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

	index1 = ret;

	/* set cert with localhost6 name */

	certfile2 = get_tmpname(certname2);

	fp = fopen(certfile2, "wb");

	if (fp == NULL)

		fail("error in fopen\n");

	assert(fwrite(server_localhost6_ca3_cert_chain_pem, 1, strlen(server_localhost6_ca3_cert_chain_pem), fp)>0);

	assert(fwrite(server_ca3_key_pem, 1, strlen((char*)server_ca3_key_pem), fp)>0);

	fclose(fp);

	ret = gnutls_certificate_set_x509_key_file2(xcred, certfile2, certfile2,

						    GNUTLS_X509_FMT_PEM, NULL, 0);

	if (ret < 0)

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

	index2 = ret;

	/* set OCSP response1 */

	ret = gnutls_certificate_set_ocsp_status_request_mem(xcred, &test_localhost.ocsp[0], index1, GNUTLS_X509_FMT_DER);

	if (ret < 0)

		fail("ocsp file set failed: %s\n", gnutls_strerror(ret));

	/* set OCSP response2 */

	ret = gnutls_certificate_set_ocsp_status_request_mem(xcred, &test_localhost6.ocsp[0], index2, GNUTLS_X509_FMT_DER);

	if (ret < 0)

		fail("ocsp file set failed: %s\n", gnutls_strerror(ret));

	ret = gnutls_certificate_set_ocsp_status_request_mem(xcred, &test_localhost6.ocsp[1], index2, GNUTLS_X509_FMT_DER);

	if (ret < 0)

		fail("ocsp file set failed: %s\n", gnutls_strerror(ret));

	/* make sure that our invalid OCSP responses are not considered in verification

	 */

	gnutls_certificate_set_verify_flags(clicred, GNUTLS_VERIFY_DISABLE_CRL_CHECKS);

	if (gnutls_certificate_get_verify_flags(clicred) != GNUTLS_VERIFY_DISABLE_CRL_CHECKS)

		fail("error in gnutls_certificate_set_verify_flags\n");

	ret = gnutls_certificate_set_x509_trust_mem(clicred, &ca3_cert, GNUTLS_X509_FMT_PEM);

	if (ret < 0) {

		fail("error in setting trust cert: %s\n", gnutls_strerror(ret));

	}

	test_cli_serv(xcred, clicred, "NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3", "localhost", &test_localhost, check_response, NULL);

	test_cli_serv(xcred, clicred, "NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3", "localhost6", &test_localhost6, check_response, NULL);

	gnutls_certificate_free_credentials(xcred);

	gnutls_certificate_free_credentials(clicred);

	gnutls_global_deinit();

	remove(certfile1);

	remove(certfile2);

}

#else

void doit(void)

{

	exit(77);

}

#endif