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/*
* Copyright (C) 2015 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.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>
# ifndef MSG_NOSIGNAL
int main(void)
{
exit(77);
}
# else
# include "utils.h"
static
void sigpipe(int sig)
{
_exit(2);
}
#define BUF_SIZE 64
static void client(int fd)
{
int ret;
gnutls_anon_client_credentials_t anoncred;
gnutls_session_t session;
char buf[BUF_SIZE];
char buf2[BUF_SIZE];
/* Need to enable anonymous KX specifically. */
global_init();
if (debug) {
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, 20 * 1000);
/* Use default priorities */
gnutls_priority_set_direct(session,
"NONE:+VERS-TLS1.0:+CIPHER-ALL:+MAC-ALL:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL",
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 && (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED));
ret = gnutls_record_recv(session, buf, sizeof(buf));
if (ret < 0 || ret != sizeof(buf)) {
kill(getppid(), SIGPIPE);
fail("client: recv failed");
}
if (debug)
success("client: received %d bytes\n", ret);
memset(buf2, 0, sizeof(buf));
if (memcmp(buf, buf2, sizeof(buf)) != 0) {
kill(getppid(), SIGPIPE);
fail("client: recv data failed");
}
close(fd);
gnutls_deinit(session);
gnutls_anon_free_client_credentials(anoncred);
gnutls_global_deinit();
if (ret < 0) {
fail("client: Handshake failed with unexpected reason: %s\n", gnutls_strerror(ret));
} else {
if (debug)
success("client: Handshake was completed\n");
}
}
/* These are global */
pid_t child;
static void server(int fd)
{
gnutls_anon_server_credentials_t anoncred;
gnutls_session_t session;
int ret;
char buf[BUF_SIZE];
unsigned i;
/* this must be called once in the program
*/
global_init();
if (debug) {
gnutls_global_set_log_level(4711);
}
gnutls_anon_allocate_server_credentials(&anoncred);
gnutls_init(&session, GNUTLS_SERVER|GNUTLS_NO_SIGNAL);
/* avoid calling all the priority functions, since the defaults
* are adequate.
*/
gnutls_priority_set_direct(session,
"NONE:+VERS-TLS1.0:+CIPHER-ALL:+MAC-ALL:+SIGN-ALL:+COMP-ALL:+ANON-ECDH:+CURVE-ALL",
NULL);
gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
gnutls_transport_set_int(session, fd);
do {
ret = gnutls_handshake(session);
}
while (ret < 0 && (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED));
if (ret < 0) {
fail("error in handshake: %s\n", gnutls_strerror(ret));
exit(1);
}
memset(buf, 0, sizeof(buf));
for (i=0;i<5;i++) {
sleep(3);
ret = gnutls_record_send(session, buf, sizeof(buf));
if (ret < 0)
break;
}
sleep(3);
gnutls_deinit(session);
gnutls_anon_free_server_credentials(anoncred);
gnutls_global_deinit();
}
static void start(void)
{
int fd[2];
int ret;
/* we need dgram in this test */
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) {
/* parent */
close(fd[0]);
server(fd[1]);
close(fd[1]);
kill(child, SIGTERM);
} else {
close(fd[1]);
client(fd[0]);
close(fd[0]);
exit(0);
}
}
static void ch_handler(int sig)
{
int status = 0;
wait(&status);
check_wait_status(status);
return;
}
void doit(void)
{
signal(SIGCHLD, ch_handler);
signal(SIGPIPE, sigpipe);
start();
}
# endif /* MSG_NOSIGNAL */
#endif /* _WIN32 */
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