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/*
* Copyright (C) 2015-2021 Red Hat, Inc.
*
* Author: Nikos Mavrogiannopoulos, Daiki Ueno
*
* 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, see <https://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <assert.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <gnutls/gnutls.h>
#include "utils.h"
#define SKIP16(pos, total) \
{ \
uint16_t _s; \
if (pos + 2 > total) \
fail("error\n"); \
_s = (msg->data[pos] << 8) | msg->data[pos + 1]; \
if ((size_t)(pos + 2 + _s) > total) \
fail("error\n"); \
pos += 2 + _s; \
}
#define SKIP8(pos, total) \
{ \
uint8_t _s; \
if (pos + 1 > total) \
fail("error\n"); \
_s = msg->data[pos]; \
if ((size_t)(pos + 1 + _s) > total) \
fail("error\n"); \
pos += 1 + _s; \
}
#define HANDSHAKE_SESSION_ID_POS 34
#include "eagain-common.h"
#include "cert-common.h"
/* This tests whether the client omits signature algorithms marked as insecure,
* from the signature_algorithms extension.
*/
const char *side;
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "%s|<%d>| %s", side, level, str);
}
#define PRIO \
"NORMAL:-VERS-ALL:+VERS-TLS1.3:-SIGN-ALL:" \
"+SIGN-RSA-PSS-RSAE-SHA256:+SIGN-RSA-PSS-RSAE-SHA384"
/* rsa_pss_rsae_sha384 */
#define SIGALGS_EXP "\x00\x02\x08\x05"
static int ext_callback(void *ctx, unsigned tls_id, const unsigned char *data,
unsigned size)
{
if (tls_id == 13) { /* signature algorithms */
if (size != sizeof(SIGALGS_EXP) - 1) {
fail("invalid signature_algorithms length: %u != 4\n",
size);
}
if (memcmp(data, SIGALGS_EXP, sizeof(SIGALGS_EXP) - 1) != 0) {
fail("invalid signature_algorithms\n");
}
}
return 0;
}
static int handshake_callback(gnutls_session_t session, unsigned int htype,
unsigned post, unsigned int incoming,
const gnutls_datum_t *msg)
{
assert(post);
if (!incoming && htype == GNUTLS_HANDSHAKE_CLIENT_HELLO) {
int ret;
unsigned pos;
gnutls_datum_t mmsg;
assert(msg->size >= HANDSHAKE_SESSION_ID_POS);
pos = HANDSHAKE_SESSION_ID_POS;
SKIP8(pos, msg->size);
SKIP16(pos, msg->size);
SKIP8(pos, msg->size);
mmsg.data = &msg->data[pos];
mmsg.size = msg->size - pos;
ret = gnutls_ext_raw_parse(NULL, ext_callback, &mmsg, 0);
assert(ret >= 0);
}
return 0;
}
void doit(void)
{
int ret;
/* Server stuff. */
gnutls_certificate_credentials_t serverx509cred;
gnutls_session_t server;
int sret = GNUTLS_E_AGAIN;
/* Client stuff. */
gnutls_certificate_credentials_t clientx509cred;
gnutls_session_t client;
int cret = GNUTLS_E_AGAIN;
global_init();
/* General init. */
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(6);
/* Init server */
gnutls_certificate_allocate_credentials(&serverx509cred);
gnutls_certificate_set_x509_key_mem(serverx509cred, &server2_cert,
&server2_key, GNUTLS_X509_FMT_PEM);
gnutls_init(&server, GNUTLS_SERVER);
gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE, serverx509cred);
gnutls_priority_set_direct(server, PRIO, NULL);
gnutls_transport_set_push_function(server, server_push);
gnutls_transport_set_pull_function(server, server_pull);
gnutls_transport_set_pull_timeout_function(server,
server_pull_timeout_func);
gnutls_transport_set_ptr(server, server);
/* Init client */
ret = gnutls_certificate_allocate_credentials(&clientx509cred);
if (ret < 0)
exit(1);
ret = gnutls_certificate_set_x509_trust_mem(clientx509cred, &ca2_cert,
GNUTLS_X509_FMT_PEM);
if (ret < 0)
exit(1);
ret = gnutls_init(&client, GNUTLS_CLIENT);
if (ret < 0)
exit(1);
ret = gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,
clientx509cred);
if (ret < 0)
exit(1);
ret = gnutls_priority_set_direct(client, PRIO, NULL);
if (ret < 0)
exit(1);
gnutls_transport_set_push_function(client, client_push);
gnutls_transport_set_pull_function(client, client_pull);
gnutls_transport_set_pull_timeout_function(client,
client_pull_timeout_func);
gnutls_transport_set_ptr(client, client);
gnutls_handshake_set_hook_function(client, GNUTLS_HANDSHAKE_ANY,
GNUTLS_HOOK_POST,
handshake_callback);
HANDSHAKE(client, server);
gnutls_bye(client, GNUTLS_SHUT_RDWR);
gnutls_bye(server, GNUTLS_SHUT_RDWR);
gnutls_deinit(client);
gnutls_deinit(server);
gnutls_certificate_free_credentials(serverx509cred);
gnutls_certificate_free_credentials(clientx509cred);
gnutls_global_deinit();
reset_buffers();
}
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