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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.
*/
#ifndef RDATA_GENERIC_CNAME_5_C
#define RDATA_GENERIC_CNAME_5_C
#define RRTYPE_CNAME_ATTRIBUTES \
(DNS_RDATATYPEATTR_EXCLUSIVE | DNS_RDATATYPEATTR_SINGLETON)
static isc_result_t
fromtext_cname(ARGS_FROMTEXT) {
isc_token_t token;
dns_name_t name;
isc_buffer_t buffer;
REQUIRE(type == dns_rdatatype_cname);
UNUSED(type);
UNUSED(rdclass);
UNUSED(callbacks);
RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
false));
dns_name_init(&name, NULL);
buffer_fromregion(&buffer, &token.value.as_region);
if (origin == NULL) {
origin = dns_rootname;
}
RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
return (ISC_R_SUCCESS);
}
static isc_result_t
totext_cname(ARGS_TOTEXT) {
isc_region_t region;
dns_name_t name;
dns_name_t prefix;
bool sub;
REQUIRE(rdata->type == dns_rdatatype_cname);
REQUIRE(rdata->length != 0);
dns_name_init(&name, NULL);
dns_name_init(&prefix, NULL);
dns_rdata_toregion(rdata, ®ion);
dns_name_fromregion(&name, ®ion);
sub = name_prefix(&name, tctx->origin, &prefix);
return (dns_name_totext(&prefix, sub, target));
}
static isc_result_t
fromwire_cname(ARGS_FROMWIRE) {
dns_name_t name;
REQUIRE(type == dns_rdatatype_cname);
UNUSED(type);
UNUSED(rdclass);
dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
dns_name_init(&name, NULL);
return (dns_name_fromwire(&name, source, dctx, options, target));
}
static isc_result_t
towire_cname(ARGS_TOWIRE) {
dns_name_t name;
dns_offsets_t offsets;
isc_region_t region;
REQUIRE(rdata->type == dns_rdatatype_cname);
REQUIRE(rdata->length != 0);
dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
dns_name_init(&name, offsets);
dns_rdata_toregion(rdata, ®ion);
dns_name_fromregion(&name, ®ion);
return (dns_name_towire(&name, cctx, target));
}
static int
compare_cname(ARGS_COMPARE) {
dns_name_t name1;
dns_name_t name2;
isc_region_t region1;
isc_region_t region2;
REQUIRE(rdata1->type == rdata2->type);
REQUIRE(rdata1->rdclass == rdata2->rdclass);
REQUIRE(rdata1->type == dns_rdatatype_cname);
REQUIRE(rdata1->length != 0);
REQUIRE(rdata2->length != 0);
dns_name_init(&name1, NULL);
dns_name_init(&name2, NULL);
dns_rdata_toregion(rdata1, ®ion1);
dns_rdata_toregion(rdata2, ®ion2);
dns_name_fromregion(&name1, ®ion1);
dns_name_fromregion(&name2, ®ion2);
return (dns_name_rdatacompare(&name1, &name2));
}
static isc_result_t
fromstruct_cname(ARGS_FROMSTRUCT) {
dns_rdata_cname_t *cname = source;
isc_region_t region;
REQUIRE(type == dns_rdatatype_cname);
REQUIRE(cname != NULL);
REQUIRE(cname->common.rdtype == type);
REQUIRE(cname->common.rdclass == rdclass);
UNUSED(type);
UNUSED(rdclass);
dns_name_toregion(&cname->cname, ®ion);
return (isc_buffer_copyregion(target, ®ion));
}
static isc_result_t
tostruct_cname(ARGS_TOSTRUCT) {
isc_region_t region;
dns_rdata_cname_t *cname = target;
dns_name_t name;
REQUIRE(rdata->type == dns_rdatatype_cname);
REQUIRE(cname != NULL);
REQUIRE(rdata->length != 0);
cname->common.rdclass = rdata->rdclass;
cname->common.rdtype = rdata->type;
ISC_LINK_INIT(&cname->common, link);
dns_name_init(&name, NULL);
dns_rdata_toregion(rdata, ®ion);
dns_name_fromregion(&name, ®ion);
dns_name_init(&cname->cname, NULL);
name_duporclone(&name, mctx, &cname->cname);
cname->mctx = mctx;
return (ISC_R_SUCCESS);
}
static void
freestruct_cname(ARGS_FREESTRUCT) {
dns_rdata_cname_t *cname = source;
REQUIRE(cname != NULL);
if (cname->mctx == NULL) {
return;
}
dns_name_free(&cname->cname, cname->mctx);
cname->mctx = NULL;
}
static isc_result_t
additionaldata_cname(ARGS_ADDLDATA) {
UNUSED(rdata);
UNUSED(owner);
UNUSED(add);
UNUSED(arg);
REQUIRE(rdata->type == dns_rdatatype_cname);
return (ISC_R_SUCCESS);
}
static isc_result_t
digest_cname(ARGS_DIGEST) {
isc_region_t r;
dns_name_t name;
REQUIRE(rdata->type == dns_rdatatype_cname);
dns_rdata_toregion(rdata, &r);
dns_name_init(&name, NULL);
dns_name_fromregion(&name, &r);
return (dns_name_digest(&name, digest, arg));
}
static bool
checkowner_cname(ARGS_CHECKOWNER) {
REQUIRE(type == dns_rdatatype_cname);
UNUSED(name);
UNUSED(type);
UNUSED(rdclass);
UNUSED(wildcard);
return (true);
}
static bool
checknames_cname(ARGS_CHECKNAMES) {
REQUIRE(rdata->type == dns_rdatatype_cname);
UNUSED(rdata);
UNUSED(owner);
UNUSED(bad);
return (true);
}
static int
casecompare_cname(ARGS_COMPARE) {
return (compare_cname(rdata1, rdata2));
}
#endif /* RDATA_GENERIC_CNAME_5_C */
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