bind9/lib/dns/zonekey.c

/*
 * 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 <stdbool.h>

#include <isc/result.h>
#include <isc/types.h>
#include <isc/util.h>

#include <dns/keyvalues.h>
#include <dns/rdata.h>
#include <dns/rdatastruct.h>
#include <dns/types.h>
#include <dns/zonekey.h>

bool
dns_zonekey_iszonekey(dns_rdata_t *keyrdata) {
	isc_result_t result;
	dns_rdata_dnskey_t key;
	bool iszonekey = true;

	REQUIRE(keyrdata != NULL);

	result = dns_rdata_tostruct(keyrdata, &key, NULL);
	if (result != ISC_R_SUCCESS) {
		return false;
	}

	if ((key.flags & DNS_KEYTYPE_NOAUTH) != 0) {
		iszonekey = false;
	}
	if ((key.flags & DNS_KEYFLAG_OWNERMASK) != DNS_KEYOWNER_ZONE) {
		iszonekey = false;
	}
	if (key.protocol != DNS_KEYPROTO_DNSSEC &&
	    key.protocol != DNS_KEYPROTO_ANY)
	{
		iszonekey = false;
	}

	return iszonekey;
}