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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/* ! \file */
#include <inttypes.h>
#include <sched.h> /* IWYU pragma: keep */
#include <setjmp.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#define UNIT_TESTING
#include <cmocka.h>
#include <isc/safe.h>
#include <isc/util.h>
#include <tests/isc.h>
/* test isc_safe_memequal() */
ISC_RUN_TEST_IMPL(isc_safe_memequal) {
UNUSED(state);
assert_true(isc_safe_memequal("test", "test", 4));
assert_true(!isc_safe_memequal("test", "tesc", 4));
assert_true(
isc_safe_memequal("\x00\x00\x00\x00", "\x00\x00\x00\x00", 4));
assert_true(
!isc_safe_memequal("\x00\x00\x00\x00", "\x00\x00\x00\x01", 4));
assert_true(
!isc_safe_memequal("\x00\x00\x00\x02", "\x00\x00\x00\x00", 4));
}
/* test isc_safe_memwipe() */
ISC_RUN_TEST_IMPL(isc_safe_memwipe) {
UNUSED(state);
/* These should pass. */
isc_safe_memwipe(NULL, 0);
isc_safe_memwipe((void *)-1, 0);
/*
* isc_safe_memwipe(ptr, size) should function same as
* memset(ptr, 0, size);
*/
{
char buf1[4] = { 1, 2, 3, 4 };
char buf2[4] = { 1, 2, 3, 4 };
isc_safe_memwipe(buf1, sizeof(buf1));
memset(buf2, 0, sizeof(buf2));
assert_int_equal(memcmp(buf1, buf2, sizeof(buf1)), 0);
}
/*
* Boundary test.
*/
{
char buf1[4] = { 1, 2, 3, 4 };
char buf2[4] = { 1, 2, 3, 4 };
/*
* We wipe 3 elements on purpose, keeping the 4th in
* place.
*/
isc_safe_memwipe(buf1, 3);
memset(buf2, 0, 3);
assert_int_equal(memcmp(buf1, buf2, sizeof(buf1)), 0);
}
}
ISC_TEST_LIST_START
ISC_TEST_ENTRY(isc_safe_memequal)
ISC_TEST_ENTRY(isc_safe_memwipe)
ISC_TEST_LIST_END
ISC_TEST_MAIN
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