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/*
* 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, see <https://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <gnutls/gnutls.h>
#include <gnutls/dtls.h>
#include <assert.h>
#include "utils.h"
#include "eagain-common.h"
#include "cert-common.h"
/*
* That test verifies whether all the supported versions are negotiated
* with the NORMAL priority string.
*/
const char *side;
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "%s|<%d>| %s", side, level, str);
}
static void try(const char *client_prio, int expected)
{
int ret;
gnutls_certificate_credentials_t serverx509cred;
gnutls_session_t server;
int sret = GNUTLS_E_AGAIN;
/* Client stuff. */
gnutls_certificate_credentials_t clientx509cred;
gnutls_session_t client;
int cret = GNUTLS_E_AGAIN;
unsigned flags = 0;
unsigned dtls = 0;
const char *server_prio = "NORMAL:+VERS-TLS-ALL";
if (expected >= GNUTLS_DTLS_VERSION_MIN &&
expected <= GNUTLS_DTLS_VERSION_MAX) {
dtls = 1;
/* we do not really do negotiation in that version */
if (expected == GNUTLS_DTLS0_9)
server_prio = client_prio;
}
/* General init. */
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(6);
/* Init server */
gnutls_certificate_allocate_credentials(&serverx509cred);
gnutls_certificate_set_x509_key_mem(serverx509cred, &server_cert,
&server_key, GNUTLS_X509_FMT_PEM);
if (dtls)
flags |= (GNUTLS_DATAGRAM | GNUTLS_NONBLOCK);
gnutls_init(&server, GNUTLS_SERVER | flags);
gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE, serverx509cred);
assert(gnutls_priority_set_direct(server, server_prio, NULL) >= 0);
gnutls_transport_set_push_function(server, server_push);
gnutls_transport_set_pull_function(server, server_pull);
gnutls_transport_set_pull_timeout_function(server,
server_pull_timeout_func);
gnutls_transport_set_ptr(server, server);
/* Init client */
ret = gnutls_certificate_allocate_credentials(&clientx509cred);
if (ret < 0)
exit(1);
ret = gnutls_certificate_set_x509_trust_mem(clientx509cred, &ca_cert,
GNUTLS_X509_FMT_PEM);
if (ret < 0)
exit(1);
ret = gnutls_init(&client, GNUTLS_CLIENT | flags);
if (ret < 0)
exit(1);
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_pull_timeout_function(client,
client_pull_timeout_func);
gnutls_transport_set_ptr(client, client);
ret = gnutls_priority_set_direct(client, client_prio, NULL);
if (ret < 0) {
fprintf(stderr, "error in %s\n", client_prio);
exit(1);
}
if (expected > 0) {
success("handshake with %s\n", client_prio);
if (dtls) {
HANDSHAKE_DTLS(client, server);
} else {
HANDSHAKE(client, server);
}
ret = gnutls_protocol_get_version(client);
if (ret != expected) {
fail("unexpected negotiated protocol %s (expected %s)\n",
gnutls_protocol_get_name(ret),
gnutls_protocol_get_name(expected));
exit(1);
}
} else {
HANDSHAKE_EXPECT(client, server, GNUTLS_E_AGAIN,
GNUTLS_E_UNSUPPORTED_VERSION_PACKET);
}
gnutls_bye(client, GNUTLS_SHUT_RDWR);
gnutls_bye(server, GNUTLS_SHUT_RDWR);
gnutls_deinit(client);
gnutls_deinit(server);
gnutls_certificate_free_credentials(serverx509cred);
gnutls_certificate_free_credentials(clientx509cred);
}
void doit(void)
{
global_init();
try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.0", GNUTLS_TLS1_0);
reset_buffers();
try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.1", GNUTLS_TLS1_1);
reset_buffers();
try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.2", GNUTLS_TLS1_2);
reset_buffers();
try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3", GNUTLS_TLS1_3);
reset_buffers();
try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3:+VERS-TLS1.0", GNUTLS_TLS1_0);
reset_buffers();
/* similar to above test, but checks a different syntax */
try("NORMAL:-VERS-ALL:+VERS-TLS1.3:+VERS-TLS1.1", GNUTLS_TLS1_1);
reset_buffers();
try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3:+VERS-TLS1.2", GNUTLS_TLS1_3);
reset_buffers();
/* If TLS 1.3 is enabled in the server, prefer the latest
* possible version regardless of the client's precedence.
* See https://gitlab.com/gnutls/gnutls/issues/837 for the
* rationale.
*/
try("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.2:+VERS-TLS1.3", GNUTLS_TLS1_3);
reset_buffers();
#ifdef ENABLE_SSL3
try("NORMAL:-VERS-TLS-ALL:+VERS-SSL3.0", -1);
reset_buffers();
#endif
try("NORMAL:-VERS-ALL:+VERS-DTLS1.0", GNUTLS_DTLS1_0);
reset_buffers();
try("NORMAL:-VERS-DTLS-ALL:+VERS-DTLS1.2", GNUTLS_DTLS1_2);
reset_buffers();
/* special test for this legacy crap */
try("NONE:+VERS-DTLS0.9:+COMP-NULL:+AES-128-CBC:+SHA1:+RSA:%COMPAT",
GNUTLS_DTLS0_9);
reset_buffers();
gnutls_global_deinit();
}
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