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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* 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 http://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/*! \file */
#include <config.h>
#include <atf-c.h>
#include <unistd.h>
#include <dns/db.h>
#include <dns/nsec3.h>
#include "dnstest.h"
#if defined(OPENSSL) || defined(PKCS11CRYPTO)
/*
* Helper functions
*/
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);
ATF_CHECK_EQ_MSG(result, ISC_R_SUCCESS, "%s", file);
result = dns_nsec3_maxiterations(db, NULL, mctx, &iterations);
ATF_CHECK_EQ_MSG(result, ISC_R_SUCCESS, "%s", file);
ATF_CHECK_EQ_MSG(iterations, expected, "%s", file);
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);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
result = dns_rdata_tostruct(&rdata, &nsec3param, NULL);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
/*
* Check typical use.
*/
result = dns_nsec3param_salttotext(&nsec3param, salt, sizeof(salt));
ATF_CHECK_EQ_MSG(result, ISC_R_SUCCESS,
"\"%s\": expected success, got %s\n",
params->nsec3param_text, isc_result_totext(result));
ATF_CHECK_EQ_MSG(strcmp(salt, params->expected_salt), 0,
"\"%s\": expected salt \"%s\", got \"%s\"",
params->nsec3param_text, params->expected_salt, 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);
ATF_REQUIRE(length < sizeof(salt) - 1); /* prevent buffer overwrite */
ATF_REQUIRE(length > 0U); /* prevent length underflow */
result = dns_nsec3param_salttotext(&nsec3param, salt, length - 1);
ATF_CHECK_EQ_MSG(result, ISC_R_NOSPACE,
"\"%s\": expected a %lu-byte target buffer to be "
"rejected, got %s\n",
params->nsec3param_text, (unsigned long)(length - 1),
isc_result_totext(result));
result = dns_nsec3param_salttotext(&nsec3param, salt, length);
ATF_CHECK_EQ_MSG(result, ISC_R_NOSPACE,
"\"%s\": expected a %lu-byte target buffer to be "
"rejected, got %s\n",
params->nsec3param_text, (unsigned long)length,
isc_result_totext(result));
result = dns_nsec3param_salttotext(&nsec3param, salt, length + 1);
ATF_CHECK_EQ_MSG(result, ISC_R_SUCCESS,
"\"%s\": expected a %lu-byte target buffer to be "
"accepted, got %s\n",
params->nsec3param_text, (unsigned long)(length + 1),
isc_result_totext(result));
}
/*
* Individual unit tests
*/
ATF_TC(max_iterations);
ATF_TC_HEAD(max_iterations, tc) {
atf_tc_set_md_var(tc, "descr", "check that appropriate max iterations "
" is returned for different key size mixes");
}
ATF_TC_BODY(max_iterations, tc) {
isc_result_t result;
UNUSED(tc);
result = dns_test_begin(NULL, false);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
iteration_test("testdata/nsec3/1024.db", 150);
iteration_test("testdata/nsec3/2048.db", 500);
iteration_test("testdata/nsec3/4096.db", 2500);
iteration_test("testdata/nsec3/min-1024.db", 150);
iteration_test("testdata/nsec3/min-2048.db", 500);
dns_test_end();
}
ATF_TC(nsec3param_salttotext);
ATF_TC_HEAD(nsec3param_salttotext, tc) {
atf_tc_set_md_var(tc, "descr", "check dns_nsec3param_salttotext()");
}
ATF_TC_BODY(nsec3param_salttotext, tc) {
isc_result_t result;
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(tc);
result = dns_test_begin(NULL, false);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) {
nsec3param_salttotext_test(&tests[i]);
}
dns_test_end();
}
#else
ATF_TC(untested);
ATF_TC_HEAD(untested, tc) {
atf_tc_set_md_var(tc, "descr", "skipping nsec3 test");
}
ATF_TC_BODY(untested, tc) {
UNUSED(tc);
atf_tc_skip("DNSSEC not available");
}
#endif
/*
* Main
*/
ATF_TP_ADD_TCS(tp) {
#if defined(OPENSSL) || defined(PKCS11CRYPTO)
ATF_TP_ADD_TC(tp, max_iterations);
ATF_TP_ADD_TC(tp, nsec3param_salttotext);
#else
ATF_TP_ADD_TC(tp, untested);
#endif
return (atf_no_error());
}
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