/*
* Copyright (C) 2015, 2019 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, 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 <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"
#include "eagain-common.h"
#include "cert-common.h"
/* This tests whether the max-record extension is respected on TLS.
*/
const char *side;
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "%s|<%d>| %s", side, level, str);
}
#define MAX_BUF 16384
static char buffer[MAX_BUF];
struct test_exp_st {
int error;
size_t size;
};
struct test_st {
const char *prio;
size_t server_max_size;
size_t client_max_size;
struct test_exp_st server_exp;
struct test_exp_st client_exp;
};
static void start(const struct test_st *test)
{
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;
printf("testing server limit %d and client limit %d in %s\n",
(int)test->server_max_size, (int)test->client_max_size,
test->prio);
global_init();
/* General init. */
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(6);
/* Init server */
assert(gnutls_certificate_allocate_credentials(&serverx509cred) >= 0);
assert(gnutls_certificate_set_x509_key_mem(serverx509cred,
&server2_cert, &server2_key,
GNUTLS_X509_FMT_PEM) >= 0);
assert(gnutls_init(&server, GNUTLS_SERVER) >= 0);
assert(gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE,
serverx509cred) >= 0);
assert(gnutls_priority_set_direct(server, test->prio, NULL) >= 0);
ret = gnutls_record_set_max_recv_size(server, test->server_max_size);
if (ret != test->server_exp.error)
fail("server: unexpected error from gnutls_record_set_max_recv_size()");
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 */
assert(gnutls_certificate_allocate_credentials(&clientx509cred) >= 0);
assert(gnutls_certificate_set_x509_trust_mem(clientx509cred, &ca2_cert, GNUTLS_X509_FMT_PEM) >= 0);
assert(gnutls_init(&client, GNUTLS_CLIENT) >= 0);
assert(gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE,
clientx509cred) >= 0);
assert(gnutls_priority_set_direct(client, test->prio, NULL) >= 0);
ret = gnutls_record_set_max_recv_size(client, test->client_max_size);
if (ret != test->client_exp.error)
fail("client: unexpected error from gnutls_record_set_max_recv_size()");
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);
HANDSHAKE(client, server);
memset(buffer, 1, sizeof(buffer));
ret = gnutls_record_send(server, buffer, test->client_max_size + 1);
if (ret < 0) {
gnutls_perror(ret);
exit(1);
}
if (ret != (int)test->server_exp.size)
fail("server: unexpected record size sent: %d (%d)\n",
ret, (int)test->server_exp.size);
success("server: did not send a %d-byte packet\n",
(int)test->server_exp.size);
ret = gnutls_record_send(server, buffer, test->client_max_size);
if (ret < 0) {
gnutls_perror(ret);
exit(1);
}
success("server: did send a %d-byte packet\n",
(int)test->client_max_size);
ret = gnutls_record_send(client, buffer, test->server_max_size + 1);
if (ret < 0) {
gnutls_perror(ret);
exit(1);
}
if (ret != (int)test->client_exp.size)
fail("client: unexpected record size sent: %d (%d)\n",
ret, (int)test->client_exp.size);
success("client: did not send a %d-byte packet\n",
(int)test->server_max_size + 1);
ret = gnutls_record_send(client, buffer, test->server_max_size);
if (ret < 0) {
gnutls_perror(ret);
exit(1);
}
success("client: did send a %d-byte packet\n",
(int)test->server_max_size);
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();
}
static const struct test_st tests[] = {
{
.prio = "NORMAL:-VERS-ALL:+VERS-TLS1.2",
.server_max_size = 512,
.client_max_size = 16384,
.server_exp = {
.error = 0,
.size = 16384,
},
.client_exp = {
.error = 0,
.size = 512,
}
},
{
.prio = "NORMAL:-VERS-ALL:+VERS-TLS1.2",
.server_max_size = 16384,
.client_max_size = 512,
.server_exp = {
.error = 0,
.size = 512,
},
.client_exp = {
.error = 0,
.size = 16384,
}
},
{
.prio = "NORMAL:-VERS-ALL:+VERS-TLS1.3",
.server_max_size = 512,
.client_max_size = 16384,
.server_exp = {
.error = 0,
.size = 16384,
},
.client_exp = {
.error = 0,
.size = 512,
}
},
{
.prio = "NORMAL:-VERS-ALL:+VERS-TLS1.3",
.server_max_size = 16384,
.client_max_size = 512,
.server_exp = {
.error = 0,
.size = 512,
},
.client_exp = {
.error = 0,
.size = 16384,
}
},
{
.prio = "NORMAL",
.server_max_size = 512,
.client_max_size = 16384,
.server_exp = {
.error = 0,
.size = 16384,
},
.client_exp = {
.error = 0,
.size = 512,
}
},
{
.prio = "NORMAL",
.server_max_size = 16384,
.client_max_size = 512,
.server_exp = {
.error = 0,
.size = 512,
},
.client_exp = {
.error = 0,
.size = 16384,
}
}
};
void doit(void)
{
size_t i;
for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++)
start(&tests[i]);
}