dns.js

/*
Language: DNS Zone
Author: Tim Schumacher <tim@datenknoten.me>
Category: config
Website: https://en.wikipedia.org/wiki/Zone_file
*/

/** @type LanguageFn */
function dns(hljs) {
  const KEYWORDS = [
    "IN",
    "A",
    "AAAA",
    "AFSDB",
    "APL",
    "CAA",
    "CDNSKEY",
    "CDS",
    "CERT",
    "CNAME",
    "DHCID",
    "DLV",
    "DNAME",
    "DNSKEY",
    "DS",
    "HIP",
    "IPSECKEY",
    "KEY",
    "KX",
    "LOC",
    "MX",
    "NAPTR",
    "NS",
    "NSEC",
    "NSEC3",
    "NSEC3PARAM",
    "PTR",
    "RRSIG",
    "RP",
    "SIG",
    "SOA",
    "SRV",
    "SSHFP",
    "TA",
    "TKEY",
    "TLSA",
    "TSIG",
    "TXT"
  ];
  return {
    name: 'DNS Zone',
    aliases: [
      'bind',
      'zone'
    ],
    keywords: KEYWORDS,
    contains: [
      hljs.COMMENT(';', '$', { relevance: 0 }),
      {
        className: 'meta',
        begin: /^\$(TTL|GENERATE|INCLUDE|ORIGIN)\b/
      },
      // IPv6
      {
        className: 'number',
        begin: '((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:)))\\b'
      },
      // IPv4
      {
        className: 'number',
        begin: '((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\\b'
      },
      hljs.inherit(hljs.NUMBER_MODE, { begin: /\b\d+[dhwm]?/ })
    ]
  };
}

module.exports = dns;