/*

 * Copyright (C) 2011-2012 Free Software Foundation, Inc.

 * Copyright (C) 2018 Dmitry Eremin-Solenikov

 * Copyright (C) 2018 Red Hat, Inc.

 *

 * 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 <gnutls/gnutls.h>

#include <gnutls/x509.h>

#include <gnutls/abstract.h>

#include "utils.h"

#include "cert-common.h"

/* Test for behavior of the library when certificate callbacks

 * return no certificates.

 */

static int cert_cb1(gnutls_session_t session,

		const gnutls_datum_t * req_ca_rdn,

		int nreqs,

		const gnutls_pk_algorithm_t * pk_algos,

		int pk_algos_length,

		gnutls_retr2_st *retr)

{

	memset(retr, 0, sizeof(*retr));

	return 0;

}

static int cert_cb2(gnutls_session_t session,

		const gnutls_datum_t *req_ca_rdn,

		int nreqs,

		const gnutls_pk_algorithm_t *pk_algos,

		int pk_algos_length,

		gnutls_pcert_st** pcert,

		unsigned int *pcert_length,

		gnutls_privkey_t *privkey)

{

	*pcert_length = 0;

	*privkey = NULL;

	*pcert = NULL;

	return 0;

}

static int cert_cb3(gnutls_session_t session,

		const struct gnutls_cert_retr_st *info,

		gnutls_pcert_st **certs,

		unsigned int *pcert_length,

		gnutls_ocsp_data_st **ocsp,

		unsigned int *ocsp_length,

		gnutls_privkey_t *privkey,

		unsigned int *flags)

{

	*privkey = NULL;

	*ocsp_length = 0;

	*pcert_length = 0;

	return 0;

}

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

{

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

}

void doit(void)

{

	gnutls_certificate_credentials_t x509_cred;

	gnutls_certificate_credentials_t clicred;

	int ret;

	/* this must be called once in the program

	 */

	global_init();

	gnutls_global_set_log_function(tls_log_func);

	if (debug)

		gnutls_global_set_log_level(6);

	gnutls_certificate_allocate_credentials(&x509_cred);

	ret = gnutls_certificate_set_x509_key_mem(x509_cred, &server_ca3_localhost_cert_chain,

					    &server_ca3_key,

					    GNUTLS_X509_FMT_PEM);

	if (ret < 0) {

		fail("error in error code\n");

		exit(1);

	}

	gnutls_certificate_allocate_credentials(&clicred);

	gnutls_certificate_set_retrieve_function(clicred, cert_cb1);

	_test_cli_serv(x509_cred, clicred, "NORMAL", "NORMAL", "localhost", NULL, NULL, NULL, 0, 1, GNUTLS_E_CERTIFICATE_REQUIRED, -1);

	gnutls_certificate_free_credentials(clicred);

	gnutls_certificate_allocate_credentials(&clicred);

	gnutls_certificate_set_retrieve_function2(clicred, cert_cb2);

	_test_cli_serv(x509_cred, clicred, "NORMAL", "NORMAL", "localhost", NULL, NULL, NULL, 0, 1, GNUTLS_E_CERTIFICATE_REQUIRED, -1);

	gnutls_certificate_free_credentials(clicred);

	gnutls_certificate_allocate_credentials(&clicred);

	gnutls_certificate_set_retrieve_function3(clicred, cert_cb3);

	_test_cli_serv(x509_cred, clicred, "NORMAL", "NORMAL", "localhost", NULL, NULL, NULL, 0, 1, GNUTLS_E_CERTIFICATE_REQUIRED, -1);

	gnutls_certificate_free_credentials(clicred);

	gnutls_certificate_free_credentials(x509_cred);

	gnutls_global_deinit();

	if (debug)

		success("success");

}