/*
* Copyright (C) 2017 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 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>
/* This tests whether a server will reject a client advertising
* MD5 signature algorithms only */
#if defined(_WIN32) || !defined(ENABLE_SSL2)
/* 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>
#include <sys/wait.h>
#include <unistd.h>
#include <gnutls/gnutls.h>
#include <signal.h>
#include <poll.h>
#include <errno.h>
#include <assert.h>
#include "utils.h"
#include "cert-common.h"
pid_t child;
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "%s |<%d>| %s", child ? "server" : "client", level,
str);
}
static unsigned char tls1_hello[] = {
0x16, 0x03, 0x01, 0x01, 0x5E, 0x01, 0x00, 0x01, 0x5A, 0x03, 0x03, 0x59, 0x52, 0x41, 0x54, 0xD5,
0x52, 0x62, 0x63, 0x69, 0x1B, 0x46, 0xBE, 0x33, 0xCC, 0xC4, 0xC3, 0xB3, 0x6C, 0xCD, 0xEC, 0x96,
0xF7, 0x7A, 0xCA, 0xE9, 0xFB, 0x85, 0x95, 0x83, 0x51, 0xE4, 0x69, 0x00, 0x00, 0xD4, 0xC0, 0x30,
0xCC, 0xA8, 0xC0, 0x8B, 0xC0, 0x14, 0xC0, 0x28, 0xC0, 0x77, 0xC0, 0x2F, 0xC0, 0x8A, 0xC0, 0x13,
0xC0, 0x27, 0xC0, 0x76, 0xC0, 0x12, 0xC0, 0x2C, 0xC0, 0xAD, 0xCC, 0xA9, 0xC0, 0x87, 0xC0, 0x0A,
0xC0, 0x24, 0xC0, 0x73, 0xC0, 0x2B, 0xC0, 0xAC, 0xC0, 0x86, 0xC0, 0x09, 0xC0, 0x23, 0xC0, 0x72,
0xC0, 0x08, 0x00, 0x9D, 0xC0, 0x9D, 0xC0, 0x7B, 0x00, 0x35, 0x00, 0x3D, 0x00, 0x84, 0x00, 0xC0,
0x00, 0x9C, 0xC0, 0x9C, 0xC0, 0x7A, 0x00, 0x2F, 0x00, 0x3C, 0x00, 0x41, 0x00, 0xBA, 0x00, 0x0A,
0x00, 0x9F, 0xC0, 0x9F, 0xCC, 0xAA, 0xC0, 0x7D, 0x00, 0x39, 0x00, 0x6B, 0x00, 0x88, 0x00, 0xC4,
0x00, 0x9E, 0xC0, 0x9E, 0xC0, 0x7C, 0x00, 0x33, 0x00, 0x67, 0x00, 0x45, 0x00, 0xBE, 0x00, 0x16,
0x00, 0xA3, 0xC0, 0x81, 0x00, 0x38, 0x00, 0x6A, 0x00, 0x87, 0x00, 0xC3, 0x00, 0xA2, 0xC0, 0x80,
0x00, 0x32, 0x00, 0x40, 0x00, 0x44, 0x00, 0xBD, 0x00, 0x13, 0x00, 0xA9, 0xC0, 0xA5, 0xCC, 0xAB,
0xC0, 0x8F, 0x00, 0x8D, 0x00, 0xAF, 0xC0, 0x95, 0x00, 0xA8, 0xC0, 0xA4, 0xC0, 0x8E, 0x00, 0x8C,
0x00, 0xAE, 0xC0, 0x94, 0x00, 0x8B, 0x00, 0xAB, 0xC0, 0xA7, 0xCC, 0xAD, 0xC0, 0x91, 0x00, 0x91,
0x00, 0xB3, 0xC0, 0x97, 0x00, 0xAA, 0xC0, 0xA6, 0xC0, 0x90, 0x00, 0x90, 0x00, 0xB2, 0xC0, 0x96,
0x00, 0x8F, 0xCC, 0xAC, 0xC0, 0x36, 0xC0, 0x38, 0xC0, 0x9B, 0xC0, 0x35, 0xC0, 0x37, 0xC0, 0x9A,
0xC0, 0x34, 0x01, 0x00, 0x00, 0x5D, 0x00, 0x17, 0x00, 0x00, 0x00, 0x16, 0x00, 0x00, 0x00, 0x05,
0x00, 0x05, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x11, 0x00, 0x00, 0x0E,
0x77, 0x77, 0x77, 0x2E, 0x67, 0x6F, 0x6F, 0x67, 0x6C, 0x65, 0x2E, 0x63, 0x6F, 0x6D, 0xFF, 0x01,
0x00, 0x01, 0x00, 0x00, 0x23, 0x00, 0x00, 0x00, 0x0A, 0x00, 0x08, 0x00, 0x06, 0x00, 0x17, 0x00,
0x18, 0x00, 0x19, 0x00, 0x0B, 0x00, 0x02, 0x01, 0x00, 0x00, 0x0D, 0x00, 0x16, 0x00, 0x14, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01};
static void client(int sd)
{
char buf[1024];
int ret;
struct pollfd pfd;
/* send a TLS 1.x hello advertising RSA-MD5 */
ret = send(sd, tls1_hello, sizeof(tls1_hello), 0);
if (ret < 0)
fail("error sending hello\n");
pfd.fd = sd;
pfd.events = POLLIN;
pfd.revents = 0;
do {
ret = poll(&pfd, 1, 10000);
} while (ret == -1 && errno == EINTR);
if (ret == -1 || ret == 0) {
fail("timeout waiting for reply\n");
}
success("sent hello\n");
ret = recv(sd, buf, sizeof(buf), 0);
if (ret < 0)
fail("error receiving alert\n");
success("received reply\n");
if (ret < 7)
fail("error in size of received alert\n");
if (buf[0] != 0x15 || buf[1] != 0x03)
fail("error in received alert data\n");
success("all ok\n");
close(sd);
}
static void server(int sd)
{
gnutls_certificate_credentials_t x509_cred;
gnutls_session_t session;
int ret;
/* this must be called once in the program
*/
global_init();
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(6);
gnutls_certificate_allocate_credentials(&x509_cred);
gnutls_certificate_set_x509_trust_mem(x509_cred, &ca3_cert,
GNUTLS_X509_FMT_PEM);
gnutls_certificate_set_x509_key_mem(x509_cred, &server_ca3_localhost_cert,
&server_ca3_key,
GNUTLS_X509_FMT_PEM);
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:-RSA", NULL)>=0);
gnutls_handshake_set_timeout(session, 20 * 1000);
gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
gnutls_transport_set_int(session, sd);
do {
ret = gnutls_handshake(session);
} while(ret == GNUTLS_E_INTERRUPTED || ret == GNUTLS_E_AGAIN);
if (ret != GNUTLS_E_NO_CIPHER_SUITES) {
fail("server: Handshake succeeded unexpectedly: %s\n", gnutls_strerror(ret));
}
gnutls_alert_send_appropriate(session, ret);
close(sd);
gnutls_deinit(session);
gnutls_certificate_free_credentials(x509_cred);
gnutls_global_deinit();
if (debug)
success("server: finished\n");
}
void doit(void)
{
int sockets[2];
int err;
signal(SIGPIPE, SIG_IGN);
err = socketpair(AF_UNIX, SOCK_STREAM, 0, sockets);
if (err == -1) {
perror("socketpair");
fail("socketpair failed\n");
return;
}
child = fork();
if (child < 0) {
perror("fork");
fail("fork");
return;
}
if (child) {
int status;
client(sockets[1]);
wait(&status);
check_wait_status(status);
} else {
server(sockets[0]);
_exit(0);
}
}
#endif /* _WIN32 */