/*

 * Copyright (C) 2014-2018 Nikos Mavrogiannopoulos

 * Copyright (C) 2018 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/>

 */

/* This test checks the behavior of handshake process if credentials

 * are set prior to client hello being received but after gnutls_handshake()

 * is called */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <assert.h>

#include <gnutls/gnutls.h>

#include <gnutls/x509.h>

#include "eagain-common.h"

#include "cert-common.h"

#include "utils.h"

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

int handshake_hook_func(gnutls_session_t session, unsigned int htype,

			unsigned when, unsigned int incoming, const gnutls_datum_t *msg)

{

	gnutls_certificate_credentials_t xcred;

	int idx;

	assert(htype == GNUTLS_HANDSHAKE_CLIENT_HELLO);

	assert(when == GNUTLS_HOOK_PRE);

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

	gnutls_certificate_set_flags(xcred, GNUTLS_CERTIFICATE_API_V2);

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

	assert(idx == 0);

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

	assert(idx == 1);

	gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE,

				xcred);

	return 0;

}

static void start(const char *prio)

{

	int ret, sret, cret;

	gnutls_certificate_credentials_t xcred, clicred;

	gnutls_session_t server, client;

	global_init();

	track_temp_files();

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

	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 late set of credentials: %s\n", prio);

	assert(gnutls_init(&server, GNUTLS_SERVER) >= 0);

	gnutls_handshake_set_hook_function(server, GNUTLS_HANDSHAKE_CLIENT_HELLO,

					   GNUTLS_HOOK_PRE, handshake_hook_func);

	assert(gnutls_priority_set_direct(server, prio, NULL) >= 0);

	gnutls_transport_set_push_function(server, server_push);

	gnutls_transport_set_pull_function(server, server_pull);

	gnutls_transport_set_ptr(server, server);

	assert(gnutls_init(&client, GNUTLS_CLIENT)>=0);

	assert(gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,

				      clicred) >= 0);

	if (ret < 0)

		exit(1);

	assert(gnutls_priority_set_direct(client, prio, NULL)>=0);

	gnutls_transport_set_push_function(client, client_push);

	gnutls_transport_set_pull_function(client, client_pull);

	gnutls_transport_set_ptr(client, client);

	HANDSHAKE(client, server);

	assert(gnutls_credentials_get(server, GNUTLS_CRD_CERTIFICATE, (void*)&xcred) >= 0);

	gnutls_deinit(client);

	gnutls_deinit(server);

	gnutls_certificate_free_credentials(xcred);

	gnutls_certificate_free_credentials(clicred);

	gnutls_global_deinit();

	delete_temp_files();

}

void doit(void)

{

	start("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.2");

	start("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3");

	start("NORMAL");

}