/*
* Copyright (C) 2004-2012 Free Software Foundation, Inc.
*
* Author: Thierry Quemerais
*
* 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/* Parts copied from GnuTLS example programs. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#if defined(_WIN32)
/* socketpair isn't supported on Win32. */
int main(int argc, char **argv)
{
exit(77);
}
#else
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#if !defined(_WIN32)
#include <sys/wait.h>
#include <signal.h>
#endif
#include <unistd.h>
#include <gnutls/gnutls.h>
#include <assert.h>
#include "utils.h"
/* A very basic TLS client, with extension
*/
const char *side = "";
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "%s|<%d>| %s", side, level, str);
}
#define TLSEXT_TYPE_SAMPLE 0xF1
static int TLSEXT_TYPE_client_sent = 0;
static int TLSEXT_TYPE_client_received = 0;
static int TLSEXT_TYPE_server_sent = 0;
static int TLSEXT_TYPE_server_received = 0;
static const unsigned char ext_data[] =
{
0xFE,
0xED
};
static int ext_recv_client_params(gnutls_session_t session, const unsigned char *buf, size_t buflen)
{
if (buflen != sizeof(ext_data))
fail("ext_recv_client_params: Invalid input buffer length\n");
if (memcmp(buf, ext_data, sizeof(ext_data)) != 0)
fail("ext_recv_client_params: Invalid input buffer data\n");
TLSEXT_TYPE_client_received = 1;
gnutls_ext_set_data(session, TLSEXT_TYPE_SAMPLE, session);
return 0; //Success
}
static int ext_send_client_params(gnutls_session_t session, gnutls_buffer_t extdata)
{
TLSEXT_TYPE_client_sent = 1;
gnutls_buffer_append_data(extdata, ext_data, sizeof(ext_data));
return sizeof(ext_data);
}
static int ext_recv_server_params(gnutls_session_t session, const unsigned char *buf, size_t buflen)
{
if (buflen != sizeof(ext_data))
fail("ext_recv_server_params: Invalid input buffer length\n");
if (memcmp(buf, ext_data, sizeof(ext_data)) != 0)
fail("ext_recv_server_params: Invalid input buffer data\n");
TLSEXT_TYPE_server_received = 1;
return 0; //Success
}
static int ext_send_server_params(gnutls_session_t session, gnutls_buffer_t extdata)
{
TLSEXT_TYPE_server_sent = 1;
gnutls_buffer_append_data(extdata, ext_data, sizeof(ext_data));
return sizeof(ext_data);
}
static void client(int sd, const char *prio)
{
int ret;
gnutls_session_t session;
gnutls_certificate_credentials_t clientx509cred;
void *p;
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(4711);
side = "client";
/* extensions are registered globally */
ret = gnutls_ext_register("ext_client", TLSEXT_TYPE_SAMPLE, GNUTLS_EXT_TLS, ext_recv_client_params, ext_send_client_params, NULL, NULL, NULL);
assert(ret >= 0);
gnutls_certificate_allocate_credentials(&clientx509cred);
/* Initialize TLS session
*/
gnutls_init(&session, GNUTLS_CLIENT);
assert(gnutls_priority_set_direct(session, prio, NULL) >= 0);
/* put the anonymous credentials to the current session
*/
gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE,
clientx509cred);
gnutls_transport_set_int(session, sd);
gnutls_handshake_set_timeout(session, 20 * 1000);
/* Perform the TLS handshake
*/
ret = gnutls_handshake(session);
if (ret < 0) {
fail("client: Handshake failed\n");
gnutls_perror(ret);
goto end;
} else {
if (debug)
success("client: Handshake was completed\n");
}
if (TLSEXT_TYPE_client_sent != 1 || TLSEXT_TYPE_client_received != 1)
fail("client: extension not properly sent/received\n");
ret = gnutls_ext_get_data(session, TLSEXT_TYPE_SAMPLE, &p);
if (ret < 0) {
fail("gnutls_ext_get_data: %s\n", gnutls_strerror(ret));
}
if (p != session) {
fail("client: gnutls_ext_get_data failed\n");
}
gnutls_bye(session, GNUTLS_SHUT_RDWR);
end:
close(sd);
gnutls_deinit(session);
gnutls_certificate_free_credentials(clientx509cred);
}
/* This is a sample TLS 1.0 server, for extension
*/
static unsigned char server_cert_pem[] =
"-----BEGIN CERTIFICATE-----\n"
"MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
"VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
"GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
"Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
"dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
"DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
"tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
"MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
"Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
"GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
"bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
"AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
"rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
const gnutls_datum_t server_cert = { server_cert_pem,
sizeof(server_cert_pem)
};
static unsigned char server_key_pem[] =
"-----BEGIN RSA PRIVATE KEY-----\n"
"MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
"TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
"fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
"AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
"8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
"iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
"Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
"oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
"XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
"qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
"tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
"hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
"LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
"-----END RSA PRIVATE KEY-----\n";
const gnutls_datum_t server_key = { server_key_pem,
sizeof(server_key_pem)
};
static void server(int sd, const char *prio)
{
gnutls_certificate_credentials_t serverx509cred;
int ret;
gnutls_session_t session;
/* this must be called once in the program
*/
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(4711);
side = "server";
gnutls_certificate_allocate_credentials(&serverx509cred);
gnutls_certificate_set_x509_key_mem(serverx509cred,
&server_cert, &server_key,
GNUTLS_X509_FMT_PEM);
gnutls_init(&session, GNUTLS_SERVER);
assert(gnutls_priority_set_direct(session, prio, NULL) >= 0);
gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE,
serverx509cred);
assert(gnutls_ext_register("ext_server", TLSEXT_TYPE_SAMPLE, GNUTLS_EXT_TLS, ext_recv_server_params, ext_send_server_params, NULL, NULL, NULL)>=0);
gnutls_transport_set_int(session, sd);
gnutls_handshake_set_timeout(session, 20 * 1000);
ret = gnutls_handshake(session);
if (ret < 0) {
close(sd);
gnutls_deinit(session);
fail("server: Handshake has failed (%s)\n\n",
gnutls_strerror(ret));
return;
}
if (debug)
success("server: Handshake was completed\n");
if (TLSEXT_TYPE_server_sent != 1 || TLSEXT_TYPE_server_received != 1)
fail("server: extension not properly sent/received\n");
/* do not wait for the peer to close the connection.
*/
gnutls_bye(session, GNUTLS_SHUT_WR);
close(sd);
gnutls_deinit(session);
gnutls_certificate_free_credentials(serverx509cred);
if (debug)
success("server: finished\n");
}
static
void start(const char *prio)
{
pid_t child1, child2;
int sockets[2];
int err;
success("trying %s\n", prio);
signal(SIGPIPE, SIG_IGN);
TLSEXT_TYPE_client_sent = 0;
TLSEXT_TYPE_client_received = 0;
TLSEXT_TYPE_server_sent = 0;
TLSEXT_TYPE_server_received = 0;
err = socketpair(AF_UNIX, SOCK_STREAM, 0, sockets);
if (err == -1) {
perror("socketpair");
fail("socketpair failed\n");
return;
}
child1 = fork();
if (child1 < 0) {
perror("fork");
fail("fork");
}
if (child1) {
int status;
/* parent */
close(sockets[1]);
child2 = fork();
if (child2 < 0) {
perror("fork");
fail("fork");
}
if (child2) {
waitpid(child1, &status, 0);
check_wait_status(status);
waitpid(child2, &status, 0);
check_wait_status(status);
} else {
server(sockets[0], prio);
exit(0);
}
} else {
close(sockets[0]);
client(sockets[1], prio);
exit(0);
}
}
void doit(void)
{
int ret;
unsigned i;
start("NORMAL:-VERS-ALL:+VERS-TLS1.2");
start("NORMAL:-VERS-ALL:+VERS-TLS1.3");
start("NORMAL");
/* check whether we can crash the library by adding many extensions */
for (i=0;i<64;i++) {
ret = gnutls_ext_register("ext_serverxx", TLSEXT_TYPE_SAMPLE+i+1, GNUTLS_EXT_TLS, ext_recv_server_params, ext_send_server_params, NULL, NULL, NULL);
if (ret < 0) {
success("failed registering extension no %d (expected)\n", i+1);
break;
}
}
}
#endif /* _WIN32 */