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/*
* Copyright (C) 2015-2017 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
/* This program tests the various certificate key exchange methods supported
* in gnutls */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <gnutls/gnutls.h>
#include "utils.h"
#include "eagain-common.h"
#include "cert-common.h"
#define USE_CERT 1
#define ASK_CERT 2
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "%s|<%d>| %s", side, level, str);
}
static
void try_with_key(const char *name,
const char *server_prio,
const char *client_prio,
const gnutls_datum_t * serv_cert,
const gnutls_datum_t * serv_key,
const gnutls_datum_t * client_cert,
const gnutls_datum_t * client_key,
unsigned cert_flags,
int exp_error_server, int exp_error_client)
{
int ret;
/* Server stuff. */
gnutls_certificate_credentials_t serverx509cred;
gnutls_anon_server_credentials_t s_anoncred;
gnutls_dh_params_t dh_params;
const gnutls_datum_t p3 = { (unsigned char *)pkcs3, strlen(pkcs3) };
gnutls_session_t server;
int sret = GNUTLS_E_AGAIN;
/* Client stuff. */
gnutls_certificate_credentials_t clientx509cred;
gnutls_anon_client_credentials_t c_anoncred;
gnutls_session_t client;
int cret = GNUTLS_E_AGAIN;
const char *err;
reset_buffers();
/* Init server */
gnutls_anon_allocate_server_credentials(&s_anoncred);
gnutls_certificate_allocate_credentials(&serverx509cred);
ret = gnutls_certificate_set_x509_key_mem(serverx509cred,
serv_cert, serv_key,
GNUTLS_X509_FMT_PEM);
if (ret < 0) {
fail("Could not set key/cert: %s\n", gnutls_strerror(ret));
}
gnutls_dh_params_init(&dh_params);
gnutls_dh_params_import_pkcs3(dh_params, &p3, GNUTLS_X509_FMT_PEM);
gnutls_certificate_set_dh_params(serverx509cred, dh_params);
gnutls_anon_set_server_dh_params(s_anoncred, dh_params);
gnutls_init(&server, GNUTLS_SERVER);
gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE, serverx509cred);
gnutls_credentials_set(server, GNUTLS_CRD_ANON, s_anoncred);
ret = gnutls_priority_set_direct(server, server_prio, &err);
if (ret < 0) {
if (ret == GNUTLS_E_INVALID_REQUEST)
fprintf(stderr, "Error in server: %s\n", err);
exit(1);
}
gnutls_transport_set_push_function(server, server_push);
gnutls_transport_set_pull_function(server, server_pull);
gnutls_transport_set_ptr(server, server);
/* Init client */
ret = gnutls_certificate_allocate_credentials(&clientx509cred);
if (ret < 0)
exit(1);
if (cert_flags == USE_CERT) {
gnutls_certificate_set_x509_key_mem(clientx509cred,
client_cert, client_key,
GNUTLS_X509_FMT_PEM);
gnutls_certificate_server_set_request(server,
GNUTLS_CERT_REQUIRE);
} else if (cert_flags == ASK_CERT) {
gnutls_certificate_server_set_request(server,
GNUTLS_CERT_REQUEST);
}
#if 0
ret =
gnutls_certificate_set_x509_trust_mem(clientx509cred, &ca_cert,
GNUTLS_X509_FMT_PEM);
if (ret < 0)
exit(1);
#endif
ret = gnutls_init(&client, GNUTLS_CLIENT);
if (ret < 0)
exit(1);
gnutls_anon_allocate_client_credentials(&c_anoncred);
gnutls_credentials_set(client, GNUTLS_CRD_ANON, c_anoncred);
ret = gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,
clientx509cred);
if (ret < 0)
exit(1);
gnutls_transport_set_push_function(client, client_push);
gnutls_transport_set_pull_function(client, client_pull);
gnutls_transport_set_ptr(client, client);
ret = gnutls_priority_set_direct(client, client_prio, &err);
if (ret < 0) {
if (ret == GNUTLS_E_INVALID_REQUEST)
fprintf(stderr, "Error in %s\n", err);
exit(1);
}
success("negotiating %s\n", name);
HANDSHAKE_EXPECT(client, server, exp_error_client, exp_error_server);
gnutls_deinit(client);
gnutls_deinit(server);
gnutls_certificate_free_credentials(serverx509cred);
gnutls_certificate_free_credentials(clientx509cred);
gnutls_anon_free_server_credentials(s_anoncred);
gnutls_anon_free_client_credentials(c_anoncred);
gnutls_dh_params_deinit(dh_params);
}
void doit(void)
{
global_init();
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(6);
/* check compatibility and handling of SIGN-ECDSA-SECP256R1-SHA256 which
* is available under TLS1.3 but not TLS1.2 */
try_with_key("TLS 1.2 with ecdhe ecdsa with ECDSA-SECP256R1-SHA256",
NULL,
"NORMAL:-VERS-ALL:+VERS-TLS1.2:-KX-ALL:+ECDHE-ECDSA:-SIGN-ALL:+SIGN-ECDSA-SECP256R1-SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+SIGN-ECDSA-SECP521R1-SHA512:+SIGN-RSA-SHA256",
&server_ca3_localhost_ecc_cert, &server_ca3_ecc_key, NULL,
NULL, 0, GNUTLS_E_NO_CIPHER_SUITES, GNUTLS_E_AGAIN);
try_with_key("TLS 1.2 with ecdhe ecdsa with ECDSA-SHA256",
NULL,
"NORMAL:-VERS-ALL:+VERS-TLS1.2:-KX-ALL:+ECDHE-ECDSA:-SIGN-ALL:+SIGN-ECDSA-SHA256:+SIGN-RSA-SHA256",
&server_ca3_localhost_ecc_cert, &server_ca3_ecc_key, NULL,
NULL, 0, 0, 0);
gnutls_global_deinit();
}
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