tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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opcodes.js (1315B)

      1 'use strict'
      2 
      3 /*
      4 * Traditional DNS header OPCODEs (4-bits) defined by IANA in
      5 * https://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml#dns-parameters-5
      6 */
      7 
      8 exports.toString = function (opcode) {
      9  switch (opcode) {
     10    case 0: return 'QUERY'
     11    case 1: return 'IQUERY'
     12    case 2: return 'STATUS'
     13    case 3: return 'OPCODE_3'
     14    case 4: return 'NOTIFY'
     15    case 5: return 'UPDATE'
     16    case 6: return 'OPCODE_6'
     17    case 7: return 'OPCODE_7'
     18    case 8: return 'OPCODE_8'
     19    case 9: return 'OPCODE_9'
     20    case 10: return 'OPCODE_10'
     21    case 11: return 'OPCODE_11'
     22    case 12: return 'OPCODE_12'
     23    case 13: return 'OPCODE_13'
     24    case 14: return 'OPCODE_14'
     25    case 15: return 'OPCODE_15'
     26  }
     27  return 'OPCODE_' + opcode
     28 }
     29 
     30 exports.toOpcode = function (code) {
     31  switch (code.toUpperCase()) {
     32    case 'QUERY': return 0
     33    case 'IQUERY': return 1
     34    case 'STATUS': return 2
     35    case 'OPCODE_3': return 3
     36    case 'NOTIFY': return 4
     37    case 'UPDATE': return 5
     38    case 'OPCODE_6': return 6
     39    case 'OPCODE_7': return 7
     40    case 'OPCODE_8': return 8
     41    case 'OPCODE_9': return 9
     42    case 'OPCODE_10': return 10
     43    case 'OPCODE_11': return 11
     44    case 'OPCODE_12': return 12
     45    case 'OPCODE_13': return 13
     46    case 'OPCODE_14': return 14
     47    case 'OPCODE_15': return 15
     48  }
     49  return 0
     50 }