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/*
* Copyright (C) 2012 Free Software Foundation, 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
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#if defined(_WIN32)
int main()
{
exit(77);
}
#else
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <gnutls/gnutls.h>
#include <gnutls/dtls.h>
#include <signal.h>
#include "utils.h"
/* This program tests whether the handshake timeout value is enforced.
*/
static void server_log_func(int level, const char *str)
{
fprintf(stderr, "server|<%d>| %s", level, str);
}
static void client_log_func(int level, const char *str)
{
fprintf(stderr, "client|<%d>| %s", level, str);
}
static void client(int fd, int tmo_ms)
{
int ret;
gnutls_anon_client_credentials_t anoncred;
gnutls_session_t session;
global_init();
if (debug) {
gnutls_global_set_log_function(client_log_func);
gnutls_global_set_log_level(4711);
}
gnutls_anon_allocate_client_credentials(&anoncred);
/* Initialize TLS session
*/
gnutls_init(&session, GNUTLS_CLIENT);
gnutls_handshake_set_timeout(session, tmo_ms);
/* Use default priorities */
gnutls_priority_set_direct(session, "NORMAL:+ANON-ECDH:-VERS-ALL:+VERS-TLS1.2", NULL);
/* put the anonymous credentials to the current session
*/
gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
gnutls_transport_set_int(session, fd);
/* Perform the TLS handshake
*/
do {
ret = gnutls_handshake(session);
}
while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
gnutls_deinit(session);
gnutls_anon_free_client_credentials(anoncred);
gnutls_global_deinit();
if (ret < 0) {
if (ret != GNUTLS_E_TIMEDOUT || tmo_ms == 0) {
if (debug)
fail("client: unexpected error: %s\n",
gnutls_strerror(ret));
exit(1);
}
if (debug)
success("client: expected timeout occurred\n");
} else {
if (tmo_ms != 0) {
fail("client: handshake was completed unexpectedly\n");
gnutls_perror(ret);
exit(1);
}
}
shutdown(fd, SHUT_RDWR);
return;
}
static void server(int fd, int tmo_ms)
{
int ret;
gnutls_session_t session;
gnutls_anon_server_credentials_t anoncred;
/* this must be called once in the program
*/
global_init();
if (debug) {
gnutls_global_set_log_function(server_log_func);
gnutls_global_set_log_level(4711);
}
gnutls_anon_allocate_server_credentials(&anoncred);
gnutls_init(&session, GNUTLS_SERVER);
/* avoid calling all the priority functions, since the defaults
* are adequate.
*/
gnutls_priority_set_direct(session, "NORMAL:+ANON-ECDH:-VERS-ALL:+VERS-TLS1.2", NULL);
gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
gnutls_transport_set_int(session, fd);
if (tmo_ms) {
char buf[32];
// read until client closes connection
while (read(fd, buf, sizeof(buf)) > 0)
;
} else {
do {
ret = gnutls_handshake(session);
}
while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
if (ret == 0)
gnutls_bye(session, GNUTLS_SHUT_RDWR);
}
gnutls_deinit(session);
gnutls_anon_free_server_credentials(anoncred);
gnutls_global_deinit();
}
static void start(int tmo_ms)
{
int fd[2];
int ret;
pid_t child;
if (debug && tmo_ms)
fprintf(stderr, "\nWill test timeout %dms\n", tmo_ms);
ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
if (ret < 0) {
perror("socketpair");
exit(1);
}
child = fork();
if (child < 0) {
perror("fork");
fail("fork");
exit(1);
}
if (child) {
int status = 0;
/* parent */
close(fd[1]);
server(fd[0], tmo_ms);
close(fd[0]);
wait(&status);
check_wait_status(status);
} else {
close(fd[0]);
client(fd[1], tmo_ms);
close(fd[1]);
exit(0);
}
}
static void ch_handler(int sig)
{
return;
}
void doit(void)
{
signal(SIGCHLD, ch_handler);
signal(SIGPIPE, SIG_IGN);
/* make sure that normal handshake occurs */
start(0);
/* check the handshake with a 100ms timeout */
start(100);
/* check the handshake with a 1000ms timeout */
start(1000);
}
#endif /* _WIN32 */
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