types.js

/*
 * Copyright (c) 2021 RethinkDNS and its authors.
 *
 * 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 http://mozilla.org/MPL/2.0/.
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2016 Mathias Buus
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

//forked with minor changes from https://github.com/mafintosh/dns-packet

"use strict";

export function toString(type) {
  switch (type) {
    case 1:
      return "A";
    case 10:
      return "NULL";
    case 28:
      return "AAAA";
    case 18:
      return "AFSDB";
    case 42:
      return "APL";
    case 257:
      return "CAA";
    case 60:
      return "CDNSKEY";
    case 59:
      return "CDS";
    case 37:
      return "CERT";
    case 5:
      return "CNAME";
    case 49:
      return "DHCID";
    case 32769:
      return "DLV";
    case 39:
      return "DNAME";
    case 48:
      return "DNSKEY";
    case 43:
      return "DS";
    case 55:
      return "HIP";
    case 13:
      return "HINFO";
    case 45:
      return "IPSECKEY";
    case 25:
      return "KEY";
    case 36:
      return "KX";
    case 29:
      return "LOC";
    case 15:
      return "MX";
    case 35:
      return "NAPTR";
    case 2:
      return "NS";
    case 47:
      return "NSEC";
    case 50:
      return "NSEC3";
    case 51:
      return "NSEC3PARAM";
    case 12:
      return "PTR";
    case 46:
      return "RRSIG";
    case 17:
      return "RP";
    case 24:
      return "SIG";
    case 6:
      return "SOA";
    case 99:
      return "SPF";
    case 33:
      return "SRV";
    case 44:
      return "SSHFP";
    case 32768:
      return "TA";
    case 249:
      return "TKEY";
    case 52:
      return "TLSA";
    case 250:
      return "TSIG";
    case 16:
      return "TXT";
    case 252:
      return "AXFR";
    case 251:
      return "IXFR";
    case 41:
      return "OPT";
    case 255:
      return "ANY";
    case 64: // https svcb code change
      return "SVCB";
    case 65: // https svcb code change
      return "HTTPS";
  }
  return "UNKNOWN_" + type;
}

export function toType(name) {
  switch (name.toUpperCase()) {
    case "A":
      return 1;
    case "NULL":
      return 10;
    case "AAAA":
      return 28;
    case "AFSDB":
      return 18;
    case "APL":
      return 42;
    case "CAA":
      return 257;
    case "CDNSKEY":
      return 60;
    case "CDS":
      return 59;
    case "CERT":
      return 37;
    case "CNAME":
      return 5;
    case "DHCID":
      return 49;
    case "DLV":
      return 32769;
    case "DNAME":
      return 39;
    case "DNSKEY":
      return 48;
    case "DS":
      return 43;
    case "HIP":
      return 55;
    case "HINFO":
      return 13;
    case "IPSECKEY":
      return 45;
    case "KEY":
      return 25;
    case "KX":
      return 36;
    case "LOC":
      return 29;
    case "MX":
      return 15;
    case "NAPTR":
      return 35;
    case "NS":
      return 2;
    case "NSEC":
      return 47;
    case "NSEC3":
      return 50;
    case "NSEC3PARAM":
      return 51;
    case "PTR":
      return 12;
    case "RRSIG":
      return 46;
    case "RP":
      return 17;
    case "SIG":
      return 24;
    case "SOA":
      return 6;
    case "SPF":
      return 99;
    case "SRV":
      return 33;
    case "SSHFP":
      return 44;
    case "TA":
      return 32768;
    case "TKEY":
      return 249;
    case "TLSA":
      return 52;
    case "TSIG":
      return 250;
    case "TXT":
      return 16;
    case "AXFR":
      return 252;
    case "IXFR":
      return 251;
    case "OPT":
      return 41;
    case "ANY":
      return 255;
    case "*":
      return 255;
    case "SVCB": // https svcb code change
      return 64;
    case "HTTPS": // https svcb code change
      return 65;
  }
  if (name.toUpperCase().startsWith("UNKNOWN_")) return parseInt(name.slice(8));
  return 0;
}