/*
* Copyright (C) 2015 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, 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 <stdint.h>
#include <string.h>
#include <errno.h>
#include <gnutls/gnutls.h>
#include <gnutls/dtls.h>
#include <signal.h>
#include <unistd.h>
#ifndef _WIN32
# include <netinet/in.h>
# include <sys/types.h>
# include <sys/socket.h>
# include <sys/wait.h>
# include <pthread.h>
#endif
#include <assert.h>
#include "utils.h"
#include "cert-common.h"
#ifdef _WIN32
void doit(void)
{
exit(77);
}
#else
/* These are global */
pid_t child;
/* Tests whether we can send and receive from different threads
* using DTLS, either as server or client. DTLS is a superset of
* TLS, so correct behavior under fork means TLS would operate too.
*/
const char *side = "";
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "%s|<%d>| %s", side, level, str);
}
#define MSG "hello1111"
#define MSG2 "xxxxxxxxxxxx"
#define NO_MSGS 128
static void *recv_thread(void *arg)
{
gnutls_session_t session = arg;
int ret;
unsigned i;
char buf[64];
if (debug)
success("client: TLS version is: %s\n",
gnutls_protocol_get_name
(gnutls_protocol_get_version(session)));
for (i=0;i<NO_MSGS;i++) {
/* the peer should reflect our messages */
do {
ret = gnutls_record_recv(session, buf, sizeof(buf));
} while(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
if (ret < 0)
fail("client: recv failed: %s\n", gnutls_strerror(ret));
if (ret != sizeof(MSG)-1 || memcmp(buf, MSG, sizeof(MSG)-1) != 0) {
fail("client: recv failed; not the expected values (got: %d, exp: %d)\n", ret, (int)sizeof(MSG)-1);
}
if (debug)
success("%d: client received: %.*s\n", i, ret, buf);
}
/* final MSG is MSG2 */
do {
ret = gnutls_record_recv(session, buf, sizeof(buf));
} while(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
if (ret < 0)
fail("client: recv2 failed: %s\n", gnutls_strerror(ret));
if (ret != sizeof(MSG2)-1 || memcmp(buf, MSG2, sizeof(MSG2)-1) != 0) {
fail("client: recv2 failed; not the expected values\n");
}
if (debug) {
success("client received: %.*s\n", ret, buf);
success("closing recv thread\n");
}
pthread_exit(0);
}
static
void do_thread_stuff(gnutls_session_t session)
{
int ret;
unsigned i;
pthread_t id;
void *rval;
sec_sleep(1);
/* separate sending from receiving */
ret = pthread_create(&id, NULL, recv_thread, session);
if (ret != 0) {
fail("error in pthread_create\n");
}
for (i=0;i<NO_MSGS;i++) {
do {
ret = gnutls_record_send(session, MSG, sizeof(MSG)-1);
} while(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
if (ret != sizeof(MSG)-1) {
fail("client: send failed: %s\n", gnutls_strerror(ret));
}
}
do {
ret = gnutls_record_send(session, MSG2, sizeof(MSG2)-1);
} while(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
if (ret != sizeof(MSG2)-1) {
fail("client: send2 failed: %s\n", gnutls_strerror(ret));
}
if (debug)
success("closing sending thread\n");
assert(pthread_join(id, &rval)==0);
assert(rval == 0);
do {
ret = gnutls_bye(session, GNUTLS_SHUT_RDWR);
} while(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
}
static void do_reflect_stuff(gnutls_session_t session)
{
char buf[64];
unsigned buf_size;
int ret;
do {
do {
ret = gnutls_record_recv(session, buf, sizeof(buf));
} while(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
if (ret < 0) {
fail("server: recv failed: %s\n", gnutls_strerror(ret));
}
if (ret == 0) {
break;
}
buf_size = ret;
if (debug) {
success("server received: %.*s\n", buf_size, buf);
}
do {
ret = gnutls_record_send(session, buf, buf_size);
} while(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
if (ret < 0) {
fail("server: send failed: %s\n", gnutls_strerror(ret));
}
if (debug)
success("reflected %d\n", ret);
} while(1);
do {
gnutls_bye(session, GNUTLS_SHUT_WR);
} while(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
}
static void client(int fd, const char *prio, unsigned do_thread, unsigned false_start)
{
int ret;
gnutls_certificate_credentials_t x509_cred;
gnutls_session_t session;
unsigned flags = GNUTLS_CLIENT;
global_init();
if (debug) {
side = "client";
gnutls_global_set_log_function(tls_log_func);
gnutls_global_set_log_level(4711);
}
assert(gnutls_certificate_allocate_credentials(&x509_cred)>=0);
if (false_start)
flags |= GNUTLS_ENABLE_FALSE_START;
assert(gnutls_init(&session, flags|GNUTLS_DATAGRAM) >= 0);
gnutls_dtls_set_mtu(session, 1500);
gnutls_dtls_set_timeouts(session, 6 * 1000, 60 * 1000);
assert(gnutls_priority_set_direct(session, prio, NULL)>=0);
assert(gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred)>=0);
gnutls_transport_set_int(session, fd);
do {
ret = gnutls_handshake(session);
}
while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
if (ret < 0) {
fail("client: Handshake failed: %s\n", gnutls_strerror(ret));
} else {
if (debug)
success("client: Handshake was completed\n");
}
if (do_thread)
do_thread_stuff(session);
else
do_reflect_stuff(session);
close(fd);
gnutls_deinit(session);
gnutls_certificate_free_credentials(x509_cred);
gnutls_global_deinit();
}
static void server(int fd, const char *prio, unsigned do_thread)
{
int ret;
gnutls_certificate_credentials_t x509_cred;
gnutls_session_t session;
global_init();
#if 0
if (debug) {
side = "server";
gnutls_global_set_log_function(tls_log_func);
gnutls_global_set_log_level(4711);
}
#endif
assert(gnutls_certificate_allocate_credentials(&x509_cred)>=0);
assert(gnutls_certificate_set_x509_key_mem(x509_cred, &server_cert,
&server_key,
GNUTLS_X509_FMT_PEM)>=0);
assert(gnutls_init(&session, GNUTLS_SERVER | GNUTLS_DATAGRAM)>=0);
gnutls_dtls_set_timeouts(session, 5 * 1000, 60 * 1000);
gnutls_dtls_set_mtu(session, 400);
assert(gnutls_priority_set_direct(session, prio, NULL)>=0);
gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
gnutls_transport_set_int(session, fd);
do {
ret = gnutls_handshake(session);
} while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
if (ret < 0) {
close(fd);
gnutls_deinit(session);
fail("server: Handshake has failed (%s)\n\n",
gnutls_strerror(ret));
}
if (debug)
success("server: Handshake was completed\n");
if (debug)
success("server: TLS version is: %s\n",
gnutls_protocol_get_name
(gnutls_protocol_get_version(session)));
if (do_thread)
do_thread_stuff(session);
else
do_reflect_stuff(session);
close(fd);
gnutls_deinit(session);
gnutls_certificate_free_credentials(x509_cred);
gnutls_global_deinit();
if (debug)
success("server: finished\n");
}
static
void run(const char *str, const char *prio, unsigned do_thread, unsigned false_start)
{
int fd[2];
int ret;
if (str)
success("running %s\n", str);
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;
/* parent */
close(fd[1]);
client(fd[0], prio, do_thread, false_start);
wait(&status);
check_wait_status(status);
} else {
close(fd[0]);
server(fd[1], prio, 1-do_thread);
exit(0);
}
}
void doit(void)
{
signal(SIGPIPE, SIG_IGN);
run("default, threaded client", "NORMAL", 0, 0);
run("default, threaded server", "NORMAL", 1, 0);
run("dtls1.2, threaded client", "NORMAL:-VERS-ALL:+VERS-DTLS1.2", 0, 0);
run("dtls1.2, threaded server", "NORMAL:-VERS-ALL:+VERS-DTLS1.2", 1, 0);
run("dtls1.2 false start, threaded client", "NORMAL:-VERS-ALL:+VERS-DTLS1.2", 0, 1);
run("dtls1.2 false start, threaded server", "NORMAL:-VERS-ALL:+VERS-DTLS1.2", 1, 1);
}
#endif /* _WIN32 */