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/*
* 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 General Public License
* along with GnuTLS. If not, see <https://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/* This is a unit test of _gnutls_record_overhead. */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <errno.h>
#include <stdint.h>
#include <stddef.h>
#include <setjmp.h>
#include <cmocka.h>
#include <gnutls/gnutls.h>
#include "../lib/gnutls_int.h"
#undef _gnutls_debug_log
#undef gnutls_assert
#undef gnutls_assert_val
#define _gnutls_debug_log printf
#define gnutls_assert()
#define gnutls_assert_val(val) val
/* #pragma doesn't work to suppress preprocessor warnings like -Wunused-macros.
* So we just use the above defined macros here. */
#if defined _gnutls_debug_log && defined gnutls_assert && defined gnutls_assert_val
#include "../lib/algorithms.h"
#endif
unsigned _gnutls_record_overhead(const version_entry_st *ver,
const cipher_entry_st *cipher,
const mac_entry_st *mac,
unsigned max);
#define OVERHEAD(v, c, m) \
_gnutls_record_overhead(version_to_entry(v), cipher_to_entry(c), mac_to_entry(m), \
0)
#define MAX_OVERHEAD(v, c, m) \
_gnutls_record_overhead(version_to_entry(v), cipher_to_entry(c), mac_to_entry(m), \
1)
static void check_aes_gcm(void **glob_state)
{
const unsigned ov = 16+8;
/* Under AES-GCM the overhead is constant */
assert_int_equal(OVERHEAD(GNUTLS_TLS1_2, GNUTLS_CIPHER_AES_128_GCM, GNUTLS_MAC_AEAD), ov);
assert_int_equal(MAX_OVERHEAD(GNUTLS_TLS1_2, GNUTLS_CIPHER_AES_128_GCM, GNUTLS_MAC_AEAD), ov);
}
static void check_tls13_aes_gcm(void **glob_state)
{
const unsigned ov = 16+1;
/* Under AES-GCM the overhead is constant */
assert_int_equal(OVERHEAD(GNUTLS_TLS1_3, GNUTLS_CIPHER_AES_128_GCM, GNUTLS_MAC_AEAD), ov);
assert_int_equal(MAX_OVERHEAD(GNUTLS_TLS1_3, GNUTLS_CIPHER_AES_128_GCM, GNUTLS_MAC_AEAD), ov);
}
static void check_aes_sha1_min(void **glob_state)
{
const unsigned mac = 20;
const unsigned block = 16;
assert_int_equal(OVERHEAD(GNUTLS_TLS1_2, GNUTLS_CIPHER_AES_128_CBC, GNUTLS_MAC_SHA1), 1+mac+block);
}
static void check_aes_sha1_max(void **glob_state)
{
const unsigned mac = 20;
const unsigned block = 16;
assert_int_equal(MAX_OVERHEAD(GNUTLS_TLS1_2, GNUTLS_CIPHER_AES_128_CBC, GNUTLS_MAC_SHA1), block+mac+block);
}
int main(void)
{
const struct CMUnitTest tests[] = {
cmocka_unit_test(check_aes_gcm),
cmocka_unit_test(check_tls13_aes_gcm),
cmocka_unit_test(check_aes_sha1_min),
cmocka_unit_test(check_aes_sha1_max)
};
return cmocka_run_group_tests(tests, NULL, NULL);
}
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