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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.
*/
#include <inttypes.h>
#include <sched.h> /* IWYU pragma: keep */
#include <setjmp.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define UNIT_TESTING
#include <cmocka.h>
#include <isc/string.h>
#include <isc/util.h>
#include <dns/db.h>
#include <dns/nsec3.h>
#include <tests/dns.h>
static void
iteration_test(const char *file, unsigned int expected) {
isc_result_t result;
dns_db_t *db = NULL;
unsigned int iterations;
result = dns_test_loaddb(&db, dns_dbtype_zone, "test", file);
assert_int_equal(result, ISC_R_SUCCESS);
iterations = dns_nsec3_maxiterations();
assert_int_equal(iterations, expected);
dns_db_detach(&db);
}
/*%
* Structure containing parameters for nsec3param_salttotext_test().
*/
typedef struct {
const char *nsec3param_text; /* NSEC3PARAM RDATA in text form */
const char *expected_salt; /* string expected in target buffer */
} nsec3param_salttotext_test_params_t;
/*%
* Check whether dns_nsec3param_salttotext() handles supplied text form
* NSEC3PARAM RDATA correctly: test whether the result of calling the former is
* as expected and whether it properly checks available buffer space.
*
* Assumes supplied text form NSEC3PARAM RDATA is valid as testing handling of
* invalid NSEC3PARAM RDATA is out of scope of this unit test.
*/
static void
nsec3param_salttotext_test(const nsec3param_salttotext_test_params_t *params) {
dns_rdata_t rdata = DNS_RDATA_INIT;
dns_rdata_nsec3param_t nsec3param;
unsigned char buf[1024];
isc_result_t result;
char salt[64];
size_t length;
/*
* Prepare a dns_rdata_nsec3param_t structure for testing.
*/
result = dns_test_rdatafromstring(
&rdata, dns_rdataclass_in, dns_rdatatype_nsec3param, buf,
sizeof(buf), params->nsec3param_text, false);
assert_int_equal(result, ISC_R_SUCCESS);
result = dns_rdata_tostruct(&rdata, &nsec3param, NULL);
assert_int_equal(result, ISC_R_SUCCESS);
/*
* Check typical use.
*/
result = dns_nsec3param_salttotext(&nsec3param, salt, sizeof(salt));
assert_int_equal(result, ISC_R_SUCCESS);
assert_string_equal(salt, params->expected_salt);
/*
* Ensure available space in the buffer is checked before the salt is
* printed to it and that the amount of space checked for includes the
* terminating NULL byte.
*/
length = strlen(params->expected_salt);
assert_true(length < sizeof(salt) - 1); /* prevent buffer overwrite */
assert_true(length > 0U); /* prevent length underflow */
result = dns_nsec3param_salttotext(&nsec3param, salt, length - 1);
assert_int_equal(result, ISC_R_NOSPACE);
result = dns_nsec3param_salttotext(&nsec3param, salt, length);
assert_int_equal(result, ISC_R_NOSPACE);
result = dns_nsec3param_salttotext(&nsec3param, salt, length + 1);
assert_int_equal(result, ISC_R_SUCCESS);
}
/*
* check that appropriate max iterations is returned for different
* key size mixes
*/
ISC_RUN_TEST_IMPL(max_iterations) {
UNUSED(state);
iteration_test(TESTS_DIR "/testdata/nsec3/1024.db", 150);
iteration_test(TESTS_DIR "/testdata/nsec3/2048.db", 150);
iteration_test(TESTS_DIR "/testdata/nsec3/4096.db", 150);
iteration_test(TESTS_DIR "/testdata/nsec3/min-1024.db", 150);
iteration_test(TESTS_DIR "/testdata/nsec3/min-2048.db", 150);
}
/* check dns_nsec3param_salttotext() */
ISC_RUN_TEST_IMPL(nsec3param_salttotext) {
size_t i;
const nsec3param_salttotext_test_params_t tests[] = {
/*
* Tests with non-empty salts.
*/
{ "0 0 10 0123456789abcdef", "0123456789ABCDEF" },
{ "0 1 11 0123456789abcdef", "0123456789ABCDEF" },
{ "1 0 12 42", "42" },
{ "1 1 13 42", "42" },
/*
* Test with empty salt.
*/
{ "0 0 0 -", "-" },
};
UNUSED(state);
for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) {
nsec3param_salttotext_test(&tests[i]);
}
}
ISC_TEST_LIST_START
ISC_TEST_ENTRY(max_iterations)
ISC_TEST_ENTRY(nsec3param_salttotext)
ISC_TEST_LIST_END
ISC_TEST_MAIN
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