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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, 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>
#if defined(_WIN32)
int main()
{
exit(77);
}
#else
#include <string.h>
#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/abstract.h>
#include <gnutls/urls.h>
#include <signal.h>
#include <assert.h>
#include "cert-common.h"
#include "utils.h"
static void terminate(void);
static unsigned url_used = 0;
/* This program tests the registration of custom URL strings.
*/
static void server_log_func(int level, const char *str)
{
fprintf(stderr, "server|<%d>| %s", level, str);
}
static int url_import_key(gnutls_privkey_t pkey, const char *url, unsigned flags)
{
if (strcmp(url, "system:key") != 0) {
fail("unexpected key url: %s\n", url);
return GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE;
}
url_used++;
return gnutls_privkey_import_x509_raw(pkey, &server_key, GNUTLS_X509_FMT_PEM, NULL, 0);
}
static int url_import_crt(gnutls_x509_crt_t crt, const char *url, unsigned flags)
{
if (strcmp(url, "system:cert") != 0) {
abort();
fail("unexpected cert url: %s\n", url);
return GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE;
}
url_used++;
return gnutls_x509_crt_import(crt, &server_cert, GNUTLS_X509_FMT_PEM);
}
static void client(int fd)
{
int ret;
gnutls_certificate_credentials_t x509_cred;
gnutls_session_t session;
gnutls_certificate_allocate_credentials(&x509_cred);
/* Initialize TLS session
*/
gnutls_init(&session, GNUTLS_CLIENT);
/* Use default priorities */
assert(gnutls_priority_set_direct(session, "NORMAL:-VERS-ALL:+VERS-TLS1.2", NULL)>=0);
gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
gnutls_transport_set_int(session, fd);
/* Perform the TLS handshake
*/
do {
ret = gnutls_handshake(session);
}
while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
if (ret < 0) {
fail("client: Handshake failed\n");
gnutls_perror(ret);
exit(1);
} else {
if (debug)
success("client: Handshake was completed\n");
}
if (debug)
success("client: TLS version is: %s\n",
gnutls_protocol_get_name
(gnutls_protocol_get_version(session)));
gnutls_bye(session, GNUTLS_SHUT_WR);
close(fd);
gnutls_deinit(session);
gnutls_certificate_free_credentials(x509_cred);
gnutls_global_deinit();
}
/* These are global */
pid_t child;
static void terminate(void)
{
assert(child);
kill(child, SIGTERM);
exit(1);
}
static void server(int fd)
{
int ret;
gnutls_session_t session;
gnutls_certificate_credentials_t x509_cred;
/* this must be called once in the program
*/
gnutls_certificate_allocate_credentials(&x509_cred);
ret = gnutls_certificate_set_x509_key_file(x509_cred, "system:cert", "system:key",
GNUTLS_X509_FMT_PEM);
if (ret < 0) {
fail("server: gnutls_certificate_set_x509_key_file (%s)\n\n",
gnutls_strerror(ret));
terminate();
}
gnutls_init(&session, GNUTLS_SERVER);
/* avoid calling all the priority functions, since the defaults
* are adequate.
*/
assert(gnutls_priority_set_direct(session, "NORMAL:-VERS-ALL:+VERS-TLS1.2", 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));
terminate();
}
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 (url_used != 2) {
fail("The callbacks were not used\n");
terminate();
}
/* do not wait for the peer to close the connection.
*/
gnutls_bye(session, GNUTLS_SHUT_WR);
close(fd);
gnutls_deinit(session);
gnutls_certificate_free_credentials(x509_cred);
gnutls_global_deinit();
if (debug)
success("server: finished\n");
}
const gnutls_custom_url_st custom_url_st = {
.name = "system:",
.name_size = sizeof("system:")-1,
.import_key = url_import_key,
.import_crt = url_import_crt
};
static void start(void)
{
int fd[2];
int ret;
global_init();
if (debug) {
gnutls_global_set_log_function(server_log_func);
gnutls_global_set_log_level(3);
}
ret = gnutls_register_custom_url(&custom_url_st);
if (ret < 0) {
fail("error registering: %s\n", gnutls_strerror(ret));
exit(1);
}
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]);
client(fd[1]);
kill(child, SIGTERM);
} else {
close(fd[1]);
server(fd[0]);
exit(0);
}
}
static void ch_handler(int sig)
{
int status;
wait(&status);
check_wait_status(status);
return;
}
void doit(void)
{
signal(SIGCHLD, ch_handler);
signal(SIGPIPE, SIG_IGN);
start();
}
#endif /* _WIN32 */
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