/*

 * 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_NS_2_C

#define RDATA_GENERIC_NS_2_C

#define RRTYPE_NS_ATTRIBUTES (DNS_RDATATYPEATTR_ZONECUTAUTH)

static isc_result_t

fromtext_ns(ARGS_FROMTEXT) {

  isc_token_t token;

  dns_name_t name;

  isc_buffer_t buffer;

  bool ok;

  REQUIRE(type == dns_rdatatype_ns);

  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));

  ok = true;

  if ((options & DNS_RDATA_CHECKNAMES) != 0) {

    ok = dns_name_ishostname(&name, false);

  }

  if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0) {

    RETTOK(DNS_R_BADNAME);

  }

  if (!ok && callbacks != NULL) {

    warn_badname(&name, lexer, callbacks);

  }

  return (ISC_R_SUCCESS);

}

static isc_result_t

totext_ns(ARGS_TOTEXT) {

  isc_region_t region;

  dns_name_t name;

  dns_name_t prefix;

  bool sub;

  REQUIRE(rdata->type == dns_rdatatype_ns);

  REQUIRE(rdata->length != 0);

  dns_name_init(&name, NULL);

  dns_name_init(&prefix, NULL);

  dns_rdata_toregion(rdata, &region);

  dns_name_fromregion(&name, &region);

  sub = name_prefix(&name, tctx->origin, &prefix);

  return (dns_name_totext(&prefix, sub, target));

}

static isc_result_t

fromwire_ns(ARGS_FROMWIRE) {

  dns_name_t name;

  REQUIRE(type == dns_rdatatype_ns);

  UNUSED(type);

  UNUSED(rdclass);

  dctx = dns_decompress_setpermitted(dctx, true);

  dns_name_init(&name, NULL);

  return (dns_name_fromwire(&name, source, dctx, target));

}

static isc_result_t

towire_ns(ARGS_TOWIRE) {

  dns_name_t name;

  dns_offsets_t offsets;

  isc_region_t region;

  REQUIRE(rdata->type == dns_rdatatype_ns);

  REQUIRE(rdata->length != 0);

  dns_compress_setpermitted(cctx, true);

  dns_name_init(&name, offsets);

  dns_rdata_toregion(rdata, &region);

  dns_name_fromregion(&name, &region);

  return (dns_name_towire(&name, cctx, target));

}

static int

compare_ns(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_ns);

  REQUIRE(rdata1->length != 0);

  REQUIRE(rdata2->length != 0);

  dns_name_init(&name1, NULL);

  dns_name_init(&name2, NULL);

  dns_rdata_toregion(rdata1, &region1);

  dns_rdata_toregion(rdata2, &region2);

  dns_name_fromregion(&name1, &region1);

  dns_name_fromregion(&name2, &region2);

  return (dns_name_rdatacompare(&name1, &name2));

}

static isc_result_t

fromstruct_ns(ARGS_FROMSTRUCT) {

  dns_rdata_ns_t *ns = source;

  isc_region_t region;

  REQUIRE(type == dns_rdatatype_ns);

  REQUIRE(ns != NULL);

  REQUIRE(ns->common.rdtype == type);

  REQUIRE(ns->common.rdclass == rdclass);

  UNUSED(type);

  UNUSED(rdclass);

  dns_name_toregion(&ns->name, &region);

  return (isc_buffer_copyregion(target, &region));

}

static isc_result_t

tostruct_ns(ARGS_TOSTRUCT) {

  isc_region_t region;

  dns_rdata_ns_t *ns = target;

  dns_name_t name;

  REQUIRE(rdata->type == dns_rdatatype_ns);

  REQUIRE(ns != NULL);

  REQUIRE(rdata->length != 0);

  ns->common.rdclass = rdata->rdclass;

  ns->common.rdtype = rdata->type;

  ISC_LINK_INIT(&ns->common, link);

  dns_name_init(&name, NULL);

  dns_rdata_toregion(rdata, &region);

  dns_name_fromregion(&name, &region);

  dns_name_init(&ns->name, NULL);

  name_duporclone(&name, mctx, &ns->name);

  ns->mctx = mctx;

  return (ISC_R_SUCCESS);

}

static void

freestruct_ns(ARGS_FREESTRUCT) {

  dns_rdata_ns_t *ns = source;

  REQUIRE(ns != NULL);

  if (ns->mctx == NULL) {

    return;

  }

  dns_name_free(&ns->name, ns->mctx);

  ns->mctx = NULL;

}

static isc_result_t

additionaldata_ns(ARGS_ADDLDATA) {

  dns_name_t name;

  dns_offsets_t offsets;

  isc_region_t region;

  REQUIRE(rdata->type == dns_rdatatype_ns);

  UNUSED(owner);

  dns_name_init(&name, offsets);

  dns_rdata_toregion(rdata, &region);

  dns_name_fromregion(&name, &region);

  return ((add)(arg, &name, dns_rdatatype_a, NULL DNS__DB_FILELINE));

}

static isc_result_t

digest_ns(ARGS_DIGEST) {

  isc_region_t r;

  dns_name_t name;

  REQUIRE(rdata->type == dns_rdatatype_ns);

  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_ns(ARGS_CHECKOWNER) {

  REQUIRE(type == dns_rdatatype_ns);

  UNUSED(name);

  UNUSED(type);

  UNUSED(rdclass);

  UNUSED(wildcard);

  return (true);

}

static bool

checknames_ns(ARGS_CHECKNAMES) {

  isc_region_t region;

  dns_name_t name;

  REQUIRE(rdata->type == dns_rdatatype_ns);

  UNUSED(owner);

  dns_rdata_toregion(rdata, &region);

  dns_name_init(&name, NULL);

  dns_name_fromregion(&name, &region);

  if (!dns_name_ishostname(&name, false)) {

    if (bad != NULL) {

      dns_name_clone(&name, bad);

    }

    return (false);

  }

  return (true);

}

static int

casecompare_ns(ARGS_COMPARE) {

  return (compare_ns(rdata1, rdata2));

}

#endif /* RDATA_GENERIC_NS_2_C */