/*
* Copyright (C) 2015-2018 Red Hat, Inc.
*
* 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>
#if !defined(__linux__) || !defined(__GNUC__)
int main(int argc, char **argv)
{
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/crypto.h>
#include "cert-common.h"
#include "utils.h"
static void terminate(void);
/* This program tests whether the gnutls_prf() works as
* expected.
*/
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);
}
/* These are global */
static pid_t child;
static const
gnutls_datum_t hrnd = {(void*)"\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 32};
static const
gnutls_datum_t hsrnd = {(void*)"\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 32};
static int gnutls_rnd_works;
int __attribute__ ((visibility ("protected")))
gnutls_rnd(gnutls_rnd_level_t level, void *data, size_t len)
{
gnutls_rnd_works = 1;
memset(data, 0xff, len);
/* Flip the first byte to avoid infinite loop in the RSA
* blinding code of Nettle */
if (len > 0)
memset(data, 0x0, 1);
return 0;
}
static void dump(const char *name, const uint8_t *data, unsigned data_size)
{
unsigned i;
fprintf(stderr, "%s", name);
for (i=0;i<data_size;i++)
fprintf(stderr, "\\x%.2x", (unsigned)data[i]);
fprintf(stderr, "\n");
}
#define TRY(label_size, label, extra_size, extra, size, exp) \
{ \
ret = gnutls_prf_rfc5705(session, label_size, label, extra_size, extra, size, \
(void*)key_material); \
if (ret < 0) { \
fprintf(stderr, "gnutls_prf_rfc5705: error in %d\n", __LINE__); \
gnutls_perror(ret); \
exit(1); \
} \
if (memcmp(key_material, exp, size) != 0) { \
fprintf(stderr, "gnutls_prf_rfc5705: output doesn't match for '%s'\n", label); \
dump("got ", key_material, size); \
dump("expected ", exp, size); \
exit(1); \
} \
}
#define TRY_OLD(label_size, label, size, exp) \
{ \
ret = gnutls_prf(session, label_size, label, 0, 0, NULL, size, \
(void*)key_material); \
if (ret < 0) { \
fprintf(stderr, "gnutls_prf: error in %d\n", __LINE__); \
gnutls_perror(ret); \
exit(1); \
} \
if (memcmp(key_material, exp, size) != 0) { \
fprintf(stderr, "gnutls_prf: output doesn't match for '%s'\n", label); \
dump("got ", key_material, size); \
dump("expected ", exp, size); \
exit(1); \
} \
}
#define KEY_EXP_VALUE "\xec\x26\x9e\x8c\x5f\xff\x5c\xb2\x60\x4f\x82\xe7\x6b\xb9\x70\x40\xb9\x2d\x2f\xe7\x41\xa8\xe7\xfa\x03\x7c\xe8\x6d\xfa\xda\xc2\xa9\x3f\x58"
#define HELLO_VALUE "\xd4\x74\x4a\x09\x28\x0a\x99\xb9\xa4\x5b\x51\x5b\x80\xe7\x50\x1c\x16\xca\x57\x78\xf0\xe5\xa1\x94\x6b\x20\x2b\x14\xff\x2b\x53"
#define CONTEXT_VALUE "\x8d\xde\xea\x58\xab\x90\xaf\x6c\x5c\x7a\x69\xbf\x8a\xd2\x16\xb4\x0f\x75\xb8\x63\xdb\x86\xe7\x66\x04\x59\xac\x57\xe0\x03\x37"
#define NULL_CONTEXT_VALUE "\x6c\x1a\x10\x1f\xa9\x5a\xfd\xcd\xf4\xcf\x27\x09\x00\xa8\xca\x8e\x8a\x56\xfb\x80\xf0\x0d\xb3\xa6\xe9\x4a\x5f\xe0\x0c\x31\xd9"
static void check_prfs(gnutls_session_t session)
{
unsigned char key_material[512];
int ret;
if (!gnutls_rnd_works) {
fprintf(stderr, "gnutls_rnd() could not be overridden, see #584\n");
exit(77);
}
TRY_OLD(13, "key expansion", 34, (uint8_t*)KEY_EXP_VALUE);
TRY_OLD(6, "hello", 31, (uint8_t*)HELLO_VALUE);
TRY(13, "key expansion", 0, NULL, 34, (uint8_t*)KEY_EXP_VALUE);
TRY(6, "hello", 0, NULL, 31, (uint8_t*)HELLO_VALUE);
TRY(7, "context", 5, "abcd\xfa", 31, (uint8_t*)CONTEXT_VALUE);
TRY(12, "null-context", 0, "", 31, (uint8_t*)NULL_CONTEXT_VALUE);
/* Try whether calling gnutls_prf() with non-null context or server-first
* param, will fail */
ret = gnutls_prf(session, 3, (void*)"xxx", 0, 3, (void*)"yyy", 16, (void*)key_material);
if (ret != GNUTLS_E_INVALID_REQUEST)
fail("gnutls_prf: succeeded under TLS1.3!\n");
ret = gnutls_prf(session, 3, (void*)"xxx", 1, 0, NULL, 16, (void*)key_material);
if (ret != GNUTLS_E_INVALID_REQUEST)
fail("gnutls_prf: succeeded under TLS1.3!\n");
}
static void client(int fd)
{
gnutls_session_t session;
int ret;
gnutls_certificate_credentials_t clientx509cred;
const char *err;
/* Need to enable anonymous KX specifically. */
global_init();
if (debug) {
gnutls_global_set_log_function(client_log_func);
gnutls_global_set_log_level(4711);
}
gnutls_certificate_allocate_credentials(&clientx509cred);
/* Initialize TLS session
*/
gnutls_init(&session, GNUTLS_CLIENT);
/* Use default priorities */
ret = gnutls_priority_set_direct(session,
"NONE:+VERS-TLS1.3:+AES-256-GCM:+AEAD:+SIGN-RSA-PSS-RSAE-SHA384:+GROUP-SECP256R1",
&err);
if (ret < 0) {
fail("client: priority set failed (%s): %s\n",
gnutls_strerror(ret), err);
exit(1);
}
ret = gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE,
clientx509cred);
if (ret < 0)
exit(1);
gnutls_handshake_set_random(session, &hrnd);
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: %s\n", strerror(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)));
ret = gnutls_cipher_get(session);
if (ret != GNUTLS_CIPHER_AES_256_GCM) {
fprintf(stderr, "negotiated unexpected cipher: %s\n", gnutls_cipher_get_name(ret));
exit(1);
}
ret = gnutls_mac_get(session);
if (ret != GNUTLS_MAC_AEAD) {
fprintf(stderr, "negotiated unexpected mac: %s\n", gnutls_mac_get_name(ret));
exit(1);
}
ret = gnutls_prf_hash_get(session);
if (ret != GNUTLS_DIG_SHA384) {
fprintf(stderr, "negotiated unexpected hash: %s\n", gnutls_digest_get_name(ret));
exit(1);
}
check_prfs(session);
gnutls_bye(session, GNUTLS_SHUT_WR);
close(fd);
gnutls_deinit(session);
gnutls_certificate_free_credentials(clientx509cred);
gnutls_global_deinit();
}
static void terminate(void)
{
int status = 0;
kill(child, SIGTERM);
wait(&status);
exit(1);
}
static void server(int fd)
{
int ret;
gnutls_session_t session;
gnutls_certificate_credentials_t serverx509cred;
/* 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_certificate_allocate_credentials(&serverx509cred);
gnutls_init(&session, GNUTLS_SERVER);
/* avoid calling all the priority functions, since the defaults
* are adequate.
*/
ret = gnutls_priority_set_direct(session,
"NORMAL:-VERS-ALL:+VERS-TLS1.3:-KX-ALL:-SIGN-ALL:+SIGN-RSA-PSS-RSAE-SHA384:-GROUP-ALL:+GROUP-SECP256R1", NULL);
if (ret < 0) {
fail("server: priority set failed (%s)\n\n",
gnutls_strerror(ret));
terminate();
}
gnutls_certificate_set_x509_key_mem(serverx509cred,
&server_cert, &server_key,
GNUTLS_X509_FMT_PEM);
gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE,
serverx509cred);
gnutls_handshake_set_random(session, &hsrnd);
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)));
check_prfs(session);
/* 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(serverx509cred);
gnutls_global_deinit();
if (debug)
success("server: finished\n");
}
void doit(void)
{
int fd[2];
int ret;
signal(SIGPIPE, SIG_IGN);
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 */
server(fd[0]);
wait(&status);
check_wait_status(status);
} else {
close(fd[0]);
client(fd[1]);
exit(0);
}
}
#endif /* _WIN32 */