dohjs/dist/doh.min.js

DNS over HTTPS lookups from web apps

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/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */
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N}return h},k=r.answer={};k.encode=function(e,r,o){r||(r=t.allocUnsafe(k.encodingLength(e))),o||(o=0);const i=o;if(c.encode(e.name,r,o),o+=c.encode.bytes,r.writeUInt16BE(n.toType(e.type),o),"OPT"===e.type.toUpperCase()){if("."!==e.name)throw new Error("OPT name must be root.");r.writeUInt16BE(e.udpPayloadSize||4096,o+2),r.writeUInt8(e.extendedRcode||0,o+4),r.writeUInt8(e.ednsVersion||0,o+5),r.writeUInt16BE(e.flags||0,o+6),o+=8,U.encode(e.options||[],r,o),o+=U.encode.bytes}else{let t=s.toClass(void 0===e.class?"IN":e.class);e.flush&&(t|=32768),r.writeUInt16BE(t,o+2),r.writeUInt32BE(e.ttl||0,o+4),o+=8;const n=P(e.type);n.encode(e.data,r,o),o+=n.encode.bytes}return k.encode.bytes=o-i,r},k.encode.bytes=0,k.decode=function(e,t){t||(t=0);const r={},o=t;if(r.name=c.decode(e,t),t+=c.decode.bytes,r.type=n.toString(e.readUInt16BE(t)),"OPT"===r.type)r.udpPayloadSize=e.readUInt16BE(t+2),r.extendedRcode=e.readUInt8(t+4),r.ednsVersion=e.readUInt8(t+5),r.flags=e.readUInt16BE(t+6),r.flag_do=1==(r.flags>>15&1),r.options=U.decode(e,t+8),t+=8+U.decode.bytes;else{const n=e.readUInt16BE(t+2);r.ttl=e.readUInt32BE(t+4),r.class=s.toString(-32769&n),r.flush=!!(32768&n);const o=P(r.type);r.data=o.decode(e,t+8),t+=8+o.decode.bytes}return k.decode.bytes=t-o,r},k.decode.bytes=0,k.encodingLength=function(e){const t=null!==e.data&&void 0!==e.data?e.data:e.options;return c.encodingLength(e.name)+8+P(e.type).encodingLength(t)};const M=r.question={};function D(e,t){let r=0;for(let n=0;n<e.length;n++)r+=t.encodingLength(e[n]);return r}function j(e,t,r,n){for(let o=0;o<e.length;o++)t.encode(e[o],r,n),n+=t.encode.bytes;return n}function q(e,t,r,n){for(let o=0;o<e.length;o++)e[o]=t.decode(r,n),n+=t.decode.bytes;return n}M.encode=function(e,r,o){r||(r=t.allocUnsafe(M.encodingLength(e))),o||(o=0);const i=o;return c.encode(e.name,r,o),o+=c.encode.bytes,r.writeUInt16BE(n.toType(e.type),o),o+=2,r.writeUInt16BE(s.toClass(void 0===e.class?"IN":e.class),o),o+=2,M.encode.bytes=o-i,e},M.encode.bytes=0,M.decode=function(e,t){t||(t=0);const r=t,o={};o.name=c.decode(e,t),t+=c.decode.bytes,o.type=n.toString(e.readUInt16BE(t)),t+=2,o.class=s.toString(e.readUInt16BE(t)),t+=2;return!!(32768&o.class)&&(o.class&=-32769),M.decode.bytes=t-r,o},M.decode.bytes=0,M.encodingLength=function(e){return c.encodingLength(e.name)+4},r.AUTHORITATIVE_ANSWER=1024,r.TRUNCATED_RESPONSE=512,r.RECURSION_DESIRED=256,r.RECURSION_AVAILABLE=128,r.AUTHENTIC_DATA=32,r.CHECKING_DISABLED=16,r.DNSSEC_OK=32768,r.encode=function(e,n,o){n||(n=t.allocUnsafe(r.encodingLength(e))),o||(o=0);const i=o;return e.questions||(e.questions=[]),e.answers||(e.answers=[]),e.authorities||(e.authorities=[]),e.additionals||(e.additionals=[]),l.encode(e,n,o),o+=l.encode.bytes,o=j(e.questions,M,n,o),o=j(e.answers,k,n,o),o=j(e.authorities,k,n,o),o=j(e.additionals,k,n,o),r.encode.bytes=o-i,n},r.encode.bytes=0,r.decode=function(e,t){t||(t=0);const n=t,o=l.decode(e,t);return t+=l.decode.bytes,t=q(o.questions,M,e,t),t=q(o.answers,k,e,t),t=q(o.authorities,k,e,t),t=q(o.additionals,k,e,t),r.decode.bytes=t-n,o},r.decode.bytes=0,r.encodingLength=function(e){return l.encodingLength(e)+D(e.questions||[],M)+D(e.answers||[],k)+D(e.authorities||[],k)+D(e.additionals||[],k)},r.streamEncode=function(e){const n=r.encode(e),o=t.allocUnsafe(2);o.writeUInt16BE(n.byteLength);const i=t.concat([o,n]);return r.streamEncode.bytes=i.byteLength,i},r.streamEncode.bytes=0,r.streamDecode=function(e){const t=e.readUInt16BE(0);if(e.byteLength<t+2)return null;const n=r.decode(e.slice(2));return r.streamDecode.bytes=r.decode.bytes,n},r.streamDecode.bytes=0}).call(this)}).call(this,e("buffer").Buffer)},{"./classes":7,"./opcodes":9,"./optioncodes":10,"./rcodes":11,"./types":12,buffer:5,ip:17}],9:[function(e,t,r){"use strict";r.toString=function(e){switch(e){case 0:return"QUERY";case 1:return"IQUERY";case 2:return"STATUS";case 3:return"OPCODE_3";case 4:return"NOTIFY";case 5:return"UPDATE";case 6:return"OPCODE_6";case 7:return"OPCODE_7";case 8:return"OPCODE_8";case 9:return"OPCODE_9";case 10:return"OPCODE_10";case 11:return"OPCODE_11";case 12:return"OPCODE_12";case 13:return"OPCODE_13";case 14:return"OPCODE_14";case 15:return"OPCODE_15"}return"OPCODE_"+e},r.toOpcode=function(e){switch(e.toUpperCase()){case"QUERY":return 0;case"IQUERY":return 1;case"STATUS":return 2;case"OPCODE_3":return 3;case"NOTIFY":return 4;case"UPDATE":return 5;case"OPCODE_6":return 6;case"OPCODE_7":return 7;case"OPCODE_8":return 8;case"OPCODE_9":return 9;case"OPCODE_10":return 10;case"OPCODE_11":return 11;case"OPCODE_12":return 12;case"OPCODE_13":return 13;case"OPCODE_14":return 14;case"OPCODE_15":return 15}return 0}},{}],10:[function(e,t,r){"use strict";r.toString=function(e){switch(e){case 1:return"LLQ";case 2:return"UL";case 3:return"NSID";case 5:return"DAU";case 6:return"DHU";case 7:return"N3U";case 8:return"CLIENT_SUBNET";case 9:return"EXPIRE";case 10:return"COOKIE";case 11:return"TCP_KEEPALIVE";case 12:return"PADDING";case 13:return"CHAIN";case 14:return"KEY_TAG";case 26946:return"DEVICEID"}return e<0?null:"OPTION_"+e},r.toCode=function(e){if("number"==typeof e)return e;if(!e)return-1;switch(e.toUpperCase()){case"OPTION_0":return 0;case"LLQ":return 1;case"UL":return 2;case"NSID":return 3;case"OPTION_4":return 4;case"DAU":return 5;case"DHU":return 6;case"N3U":return 7;case"CLIENT_SUBNET":return 8;case"EXPIRE":return 9;case"COOKIE":return 10;case"TCP_KEEPALIVE":return 11;case"PADDING":return 12;case"CHAIN":return 13;case"KEY_TAG":return 14;case"DEVICEID":return 26946;case"OPTION_65535":return 65535}const t=e.match(/_(\d+)$/);return t?parseInt(t[1],10):-1}},{}],11:[function(e,