text: /*
   * Copyright (C) 2004, 2007, 2009, 2015  Internet Systems Consortium, Inc. ("ISC")
   * Copyright (C) 1999-2001  Internet Software Consortium.
   *
   * Permission to use, copy, modify, and/or distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
   * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
   * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
   * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
   * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
   * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
   * PERFORMANCE OF THIS SOFTWARE.
   */
  
  /* $Id: dname_39.c,v 1.40 2009/12/04 22:06:37 tbox Exp $ */
  
  /* Reviewed: Wed Mar 15 16:52:38 PST 2000 by explorer */
  
  /* RFC2672 */
  
  #ifndef RDATA_GENERIC_DNAME_39_C
  #define RDATA_GENERIC_DNAME_39_C
  
  #define RRTYPE_DNAME_ATTRIBUTES (DNS_RDATATYPEATTR_SINGLETON)
  
  static inline isc_result_t
  fromtext_dname(ARGS_FROMTEXT) {
  	isc_token_t token;
  	dns_name_t name;
  	isc_buffer_t buffer;
  
  	REQUIRE(type == dns_rdatatype_dname);
  
  	UNUSED(type);
  	UNUSED(rdclass);
  	UNUSED(callbacks);
  
  	RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  				      ISC_FALSE));
  
  	dns_name_init(&name, NULL);
  	buffer_fromregion(&buffer, &token.value.as_region);
  	origin = (origin != NULL) ? origin : dns_rootname;
  	RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  	return (ISC_R_SUCCESS);
  }
  
  static inline isc_result_t
  totext_dname(ARGS_TOTEXT) {
  	isc_region_t region;
  	dns_name_t name;
  	dns_name_t prefix;
  	isc_boolean_t sub;
  
  	REQUIRE(rdata->type == dns_rdatatype_dname);
  	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 inline isc_result_t
  fromwire_dname(ARGS_FROMWIRE) {
  	dns_name_t name;
  
  	REQUIRE(type == dns_rdatatype_dname);
  
  	UNUSED(type);
  	UNUSED(rdclass);
  
  	dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
  
  	dns_name_init(&name, NULL);
  	return(dns_name_fromwire(&name, source, dctx, options, target));
  }
  
  static inline isc_result_t
  towire_dname(ARGS_TOWIRE) {
  	dns_name_t name;
  	dns_offsets_t offsets;
  	isc_region_t region;
  
  	REQUIRE(rdata->type == dns_rdatatype_dname);
  	REQUIRE(rdata->length != 0);
  
  	dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
  	dns_name_init(&name, offsets);
  	dns_rdata_toregion(rdata, &region);
  	dns_name_fromregion(&name, &region);
  
  	return (dns_name_towire(&name, cctx, target));
  }
  
  static inline int
  compare_dname(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_dname);
  	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 inline isc_result_t
  fromstruct_dname(ARGS_FROMSTRUCT) {
  	dns_rdata_dname_t *dname = source;
  	isc_region_t region;
  
  	REQUIRE(type == dns_rdatatype_dname);
  	REQUIRE(source != NULL);
  	REQUIRE(dname->common.rdtype == type);
  	REQUIRE(dname->common.rdclass == rdclass);
  
  	UNUSED(type);
  	UNUSED(rdclass);
  
  	dns_name_toregion(&dname->dname, &region);
  	return (isc_buffer_copyregion(target, &region));
  }
  
  static inline isc_result_t
  tostruct_dname(ARGS_TOSTRUCT) {
  	isc_region_t region;
  	dns_rdata_dname_t *dname = target;
  	dns_name_t name;
  
  	REQUIRE(rdata->type == dns_rdatatype_dname);
  	REQUIRE(target != NULL);
  	REQUIRE(rdata->length != 0);
  
  	dname->common.rdclass = rdata->rdclass;
  	dname->common.rdtype = rdata->type;
  	ISC_LINK_INIT(&dname->common, link);
  
  	dns_name_init(&name, NULL);
  	dns_rdata_toregion(rdata, &region);
  	dns_name_fromregion(&name, &region);
  	dns_name_init(&dname->dname, NULL);
  	RETERR(name_duporclone(&name, mctx, &dname->dname));
  	dname->mctx = mctx;
  	return (ISC_R_SUCCESS);
  }
  
  static inline void
  freestruct_dname(ARGS_FREESTRUCT) {
  	dns_rdata_dname_t *dname = source;
  
  	REQUIRE(source != NULL);
  	REQUIRE(dname->common.rdtype == dns_rdatatype_dname);
  
  	if (dname->mctx == NULL)
  		return;
  
  	dns_name_free(&dname->dname, dname->mctx);
  	dname->mctx = NULL;
  }
  
  static inline isc_result_t
  additionaldata_dname(ARGS_ADDLDATA) {
  	UNUSED(rdata);
  	UNUSED(add);
  	UNUSED(arg);
  
  	REQUIRE(rdata->type == dns_rdatatype_dname);
  
  	return (ISC_R_SUCCESS);
  }
  
  static inline isc_result_t
  digest_dname(ARGS_DIGEST) {
  	isc_region_t r;
  	dns_name_t name;
  
  	REQUIRE(rdata->type == dns_rdatatype_dname);
  
  	dns_rdata_toregion(rdata, &r);
  	dns_name_init(&name, NULL);
  	dns_name_fromregion(&name, &r);
  
  	return (dns_name_digest(&name, digest, arg));
  }
  
  static inline isc_boolean_t
  checkowner_dname(ARGS_CHECKOWNER) {
  
  	REQUIRE(type == dns_rdatatype_dname);
  
  	UNUSED(name);
  	UNUSED(type);
  	UNUSED(rdclass);
  	UNUSED(wildcard);
  
  	return (ISC_TRUE);
  }
  
  static inline isc_boolean_t
  checknames_dname(ARGS_CHECKNAMES) {
  
  	REQUIRE(rdata->type == dns_rdatatype_dname);
  
  	UNUSED(rdata);
  	UNUSED(owner);
  	UNUSED(bad);
  
  	return (ISC_TRUE);
  }
  
  static inline int
  casecompare_dname(ARGS_COMPARE) {
  	return (compare_dname(rdata1, rdata2));
  }
  #endif	/* RDATA_GENERIC_DNAME_39_C */
  