/*

 * 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 GENERIC_URI_256_C

#define GENERIC_URI_256_C 1

#define RRTYPE_URI_ATTRIBUTES (0)

static isc_result_t

fromtext_uri(ARGS_FROMTEXT) {

  isc_token_t token;

  REQUIRE(type == dns_rdatatype_uri);

  UNUSED(type);

  UNUSED(rdclass);

  UNUSED(origin);

  UNUSED(options);

  UNUSED(callbacks);

  /*

   * Priority

   */

  RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,

              false));

  if (token.value.as_ulong > 0xffffU) {

    RETTOK(ISC_R_RANGE);

  }

  RETERR(uint16_tobuffer(token.value.as_ulong, target));

  /*

   * Weight

   */

  RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,

              false));

  if (token.value.as_ulong > 0xffffU) {

    RETTOK(ISC_R_RANGE);

  }

  RETERR(uint16_tobuffer(token.value.as_ulong, target));

  /*

   * Target URI (non empty).

   */

  RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,

              false));

  if (token.type != isc_tokentype_qstring ||

      token.value.as_textregion.length == 0)

  {

    RETTOK(DNS_R_SYNTAX);

  }

  RETTOK(multitxt_fromtext(&token.value.as_textregion, target));

  return ISC_R_SUCCESS;

}

static isc_result_t

totext_uri(ARGS_TOTEXT) {

  isc_region_t region;

  unsigned short priority, weight;

  char buf[sizeof("65000 ")];

  UNUSED(tctx);

  REQUIRE(rdata->type == dns_rdatatype_uri);

  REQUIRE(rdata->length != 0);

  dns_rdata_toregion(rdata, &region);

  /*

   * Priority

   */

  priority = uint16_fromregion(&region);

  isc_region_consume(&region, 2);

  snprintf(buf, sizeof(buf), "%u ", priority);

  RETERR(str_totext(buf, target));

  /*

   * Weight

   */

  weight = uint16_fromregion(&region);

  isc_region_consume(&region, 2);

  snprintf(buf, sizeof(buf), "%u ", weight);

  RETERR(str_totext(buf, target));

  /*

   * Target URI

   */

  RETERR(multitxt_totext(&region, target));

  return ISC_R_SUCCESS;

}

static isc_result_t

fromwire_uri(ARGS_FROMWIRE) {

  isc_region_t region;

  REQUIRE(type == dns_rdatatype_uri);

  UNUSED(type);

  UNUSED(rdclass);

  UNUSED(dctx);

  /*

   * Priority, weight and target URI (non empty).

   */

  isc_buffer_activeregion(source, &region);

  if (region.length < 5) {

    return ISC_R_UNEXPECTEDEND;

  }

  isc_buffer_forward(source, region.length);

  return mem_tobuffer(target, region.base, region.length);

}

static isc_result_t

towire_uri(ARGS_TOWIRE) {

  isc_region_t region;

  REQUIRE(rdata->type == dns_rdatatype_uri);

  REQUIRE(rdata->length != 0);

  UNUSED(cctx);

  dns_rdata_toregion(rdata, &region);

  return mem_tobuffer(target, region.base, region.length);

}

static int

compare_uri(ARGS_COMPARE) {

  isc_region_t r1;

  isc_region_t r2;

  int order;

  REQUIRE(rdata1->type == rdata2->type);

  REQUIRE(rdata1->rdclass == rdata2->rdclass);

  REQUIRE(rdata1->type == dns_rdatatype_uri);

  REQUIRE(rdata1->length != 0);

  REQUIRE(rdata2->length != 0);

  dns_rdata_toregion(rdata1, &r1);

  dns_rdata_toregion(rdata2, &r2);

  /*

   * Priority

   */

  order = memcmp(r1.base, r2.base, 2);

  if (order != 0) {

    return order < 0 ? -1 : 1;

  }

  isc_region_consume(&r1, 2);

  isc_region_consume(&r2, 2);

  /*

   * Weight

   */

  order = memcmp(r1.base, r2.base, 2);

  if (order != 0) {

    return order < 0 ? -1 : 1;

  }

  isc_region_consume(&r1, 2);

  isc_region_consume(&r2, 2);

  return isc_region_compare(&r1, &r2);

}

static isc_result_t

fromstruct_uri(ARGS_FROMSTRUCT) {

  dns_rdata_uri_t *uri = source;

  REQUIRE(type == dns_rdatatype_uri);

  REQUIRE(uri != NULL);

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

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

  REQUIRE(uri->target != NULL && uri->tgt_len != 0);

  UNUSED(type);

  UNUSED(rdclass);

  /*

   * Priority

   */

  RETERR(uint16_tobuffer(uri->priority, target));

  /*

   * Weight

   */

  RETERR(uint16_tobuffer(uri->weight, target));

  /*

   * Target URI

   */

  return mem_tobuffer(target, uri->target, uri->tgt_len);

}

static isc_result_t

tostruct_uri(ARGS_TOSTRUCT) {

  dns_rdata_uri_t *uri = target;

  isc_region_t sr;

  REQUIRE(rdata->type == dns_rdatatype_uri);

  REQUIRE(uri != NULL);

  REQUIRE(rdata->length > 4);

  DNS_RDATACOMMON_INIT(uri, rdata->type, rdata->rdclass);

  dns_rdata_toregion(rdata, &sr);

  /*

   * Priority

   */

  uri->priority = uint16_fromregion(&sr);

  isc_region_consume(&sr, 2);

  /*

   * Weight

   */

  uri->weight = uint16_fromregion(&sr);

  isc_region_consume(&sr, 2);

  /*

   * Target URI

   */

  uri->tgt_len = sr.length;

  uri->target = mem_maybedup(mctx, sr.base, sr.length);

  uri->mctx = mctx;

  return ISC_R_SUCCESS;

}

static void

freestruct_uri(ARGS_FREESTRUCT) {

  dns_rdata_uri_t *uri = (dns_rdata_uri_t *)source;

  REQUIRE(uri != NULL);

  REQUIRE(uri->common.rdtype == dns_rdatatype_uri);

  if (uri->mctx == NULL) {

    return;

  }

  if (uri->target != NULL) {

    isc_mem_free(uri->mctx, uri->target);

  }

  uri->mctx = NULL;

}

static isc_result_t

additionaldata_uri(ARGS_ADDLDATA) {

  REQUIRE(rdata->type == dns_rdatatype_uri);

  UNUSED(rdata);

  UNUSED(owner);

  UNUSED(add);

  UNUSED(arg);

  return ISC_R_SUCCESS;

}

static isc_result_t

digest_uri(ARGS_DIGEST) {

  isc_region_t r;

  REQUIRE(rdata->type == dns_rdatatype_uri);

  dns_rdata_toregion(rdata, &r);

  return (digest)(arg, &r);

}

static bool

checkowner_uri(ARGS_CHECKOWNER) {

  REQUIRE(type == dns_rdatatype_uri);

  UNUSED(name);

  UNUSED(type);

  UNUSED(rdclass);

  UNUSED(wildcard);

  return true;

}

static bool

checknames_uri(ARGS_CHECKNAMES) {

  REQUIRE(rdata->type == dns_rdatatype_uri);

  UNUSED(rdata);

  UNUSED(owner);

  UNUSED(bad);

  return true;

}

static int

casecompare_uri(ARGS_COMPARE) {

  return compare_uri(rdata1, rdata2);

}

#endif /* GENERIC_URI_256_C */