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/*
* Copyright (C) 2020 Red Hat, Inc.
*
* Author: 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 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>
#include <string.h>
#include <errno.h>
#include <gnutls/gnutls.h>
#include <assert.h>
#include "cert-common.h"
#include "utils.h"
#define RANDOMIZE
#include "eagain-common.h"
/* This tests gnutls_record_set_write_function() and
* gnutls_record_push_data() by short-circuiting the handshake.
*/
const char *side = "";
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "%s|<%d>| %s", side, level, str);
}
#define MAX_BUF 1024
#define MSG \
"Hello TLS, and hi and how are you and more data here... and more... and even more and even more more data..."
static ssize_t error_push(gnutls_transport_ptr_t tr, const void *data,
size_t len)
{
fail("push_func called unexpectedly");
return -1;
}
static ssize_t error_pull(gnutls_transport_ptr_t tr, void *data, size_t len)
{
fail("pull_func called unexpectedly");
return -1;
}
static int handshake_read_func(gnutls_session_t session,
gnutls_record_encryption_level_t level,
gnutls_handshake_description_t htype,
const void *data, size_t data_size)
{
gnutls_session_t peer = gnutls_session_get_ptr(session);
if (htype == GNUTLS_HANDSHAKE_CHANGE_CIPHER_SPEC)
return 0;
if (htype == GNUTLS_HANDSHAKE_KEY_UPDATE)
return 0;
return gnutls_handshake_write(peer, level, data, data_size);
}
static void run(const char *name, const char *prio)
{
/* Server stuff. */
gnutls_certificate_credentials_t scred;
gnutls_session_t server;
/* Client stuff. */
gnutls_certificate_credentials_t ccred;
gnutls_session_t client;
int sret, cret;
char buffer[MAX_BUF + 1];
int transferred = 0;
success("%s\n", name);
/* General init. */
global_init();
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(9);
/* Init server */
assert(gnutls_certificate_allocate_credentials(&scred) >= 0);
assert(gnutls_certificate_set_x509_key_mem(
scred, &server_ca3_localhost_cert, &server_ca3_key,
GNUTLS_X509_FMT_PEM) >= 0);
assert(gnutls_init(&server, GNUTLS_SERVER) >= 0);
assert(gnutls_priority_set_direct(server, prio, NULL) >= 0);
gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE, scred);
gnutls_transport_set_push_function(server, error_push);
gnutls_transport_set_pull_function(server, error_pull);
/* Init client */
assert(gnutls_certificate_allocate_credentials(&ccred) >= 0);
assert(gnutls_certificate_set_x509_trust_mem(ccred, &ca3_cert,
GNUTLS_X509_FMT_PEM) >= 0);
gnutls_init(&client, GNUTLS_CLIENT);
assert(gnutls_priority_set_direct(client, prio, NULL) >= 0);
assert(gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE, ccred) >=
0);
gnutls_transport_set_push_function(client, error_push);
gnutls_transport_set_pull_function(client, error_pull);
gnutls_session_set_ptr(server, client);
gnutls_session_set_ptr(client, server);
gnutls_handshake_set_read_function(server, handshake_read_func);
gnutls_handshake_set_read_function(client, handshake_read_func);
HANDSHAKE(client, server);
if (debug)
success("Handshake established\n");
gnutls_transport_set_push_function(server, server_push);
gnutls_transport_set_pull_function(server, server_pull);
gnutls_transport_set_ptr(server, server);
gnutls_transport_set_push_function(client, client_push);
gnutls_transport_set_pull_function(client, client_pull);
gnutls_transport_set_ptr(client, client);
TRANSFER(client, server, MSG, strlen(MSG), buffer, MAX_BUF);
TRANSFER(server, client, MSG, strlen(MSG), buffer, MAX_BUF);
/* Trigger a KeyUpdate that won't actually be sent to the client,
* as handshake_read_func() will drop the message.
*/
gnutls_session_key_update(server, GNUTLS_KU_PEER);
/* Manually update the client keys */
gnutls_handshake_update_receiving_key(client);
TRANSFER(client, server, MSG, strlen(MSG), buffer, MAX_BUF);
TRANSFER(server, client, MSG, strlen(MSG), buffer, MAX_BUF);
gnutls_bye(client, GNUTLS_SHUT_WR);
gnutls_bye(server, GNUTLS_SHUT_WR);
gnutls_deinit(client);
gnutls_deinit(server);
gnutls_certificate_free_credentials(scred);
gnutls_certificate_free_credentials(ccred);
gnutls_global_deinit();
reset_buffers();
}
void doit(void)
{
run("TLS 1.3", "NORMAL:-VERS-TLS-ALL:+VERS-TLS1.3");
}
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