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      1 /*	$NetBSD: zonekey.c,v 1.8 2025/01/26 16:25:26 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
      5  *
      6  * SPDX-License-Identifier: MPL-2.0
      7  *
      8  * This Source Code Form is subject to the terms of the Mozilla Public
      9  * License, v. 2.0. If a copy of the MPL was not distributed with this
     10  * file, you can obtain one at https://mozilla.org/MPL/2.0/.
     11  *
     12  * See the COPYRIGHT file distributed with this work for additional
     13  * information regarding copyright ownership.
     14  */
     15 
     16 /*! \file */
     17 
     18 #include <stdbool.h>
     19 
     20 #include <isc/result.h>
     21 #include <isc/types.h>
     22 #include <isc/util.h>
     23 
     24 #include <dns/keyvalues.h>
     25 #include <dns/rdata.h>
     26 #include <dns/rdatastruct.h>
     27 #include <dns/types.h>
     28 #include <dns/zonekey.h>
     29 
     30 bool
     31 dns_zonekey_iszonekey(dns_rdata_t *keyrdata) {
     32 	isc_result_t result;
     33 	dns_rdata_dnskey_t key;
     34 	bool iszonekey = true;
     35 
     36 	REQUIRE(keyrdata != NULL);
     37 
     38 	result = dns_rdata_tostruct(keyrdata, &key, NULL);
     39 	if (result != ISC_R_SUCCESS) {
     40 		return false;
     41 	}
     42 
     43 	if ((key.flags & DNS_KEYTYPE_NOAUTH) != 0) {
     44 		iszonekey = false;
     45 	}
     46 	if ((key.flags & DNS_KEYFLAG_OWNERMASK) != DNS_KEYOWNER_ZONE) {
     47 		iszonekey = false;
     48 	}
     49 	if (key.protocol != DNS_KEYPROTO_DNSSEC &&
     50 	    key.protocol != DNS_KEYPROTO_ANY)
     51 	{
     52 		iszonekey = false;
     53 	}
     54 
     55 	return iszonekey;
     56 }
     57