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First basic implementation of protocol.

This commit is contained in:
Fabian Stamm 2018-05-13 12:07:43 +02:00
commit 524f246398
16 changed files with 1212 additions and 0 deletions
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node_modules
yarn.lock
*.pcapng
*.bin

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import { Request } from "./request";
export default class Listener {
private udp;
private tcp;
constructor(type: "udp" | "tcp", onRequest: (request: Request) => any, port: number, host?: string);
close(): void;
}

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const net = require("net");
const dgram = require("dgram");
const request_1 = require("./request");
class Listener {
constructor(type, onRequest, port, host = "0.0.0.0") {
switch (type) {
case "udp":
this.udp = dgram.createSocket("udp4");
this.udp.on("listening", () => {
console.log(`UDP Server Listening on ${port}`);
});
this.udp.on("message", (message, remote) => {
let request = new request_1.Request(message, (data) => {
// console.log("sending:", new Request(data, (a) => 0));
this.udp.send(data, remote.port, remote.address);
});
onRequest(request);
});
this.udp.bind(port, host);
break;
case "tcp":
console.log("Not correct implemented");
this.tcp = net.createServer((socket) => {
let length;
let got = 0;
let message = undefined;
socket.on("data", (data) => {
let offset = 0;
if (!message) {
length = data.readUInt16BE(0);
if (length > 2048)
return socket.destroy(); //Requests with more that 2k are ignored
message = Buffer.alloc(length);
offset = 2;
}
let read = (data.length - offset) > (length - got) ? (length - got) : (data.length - offset);
data.copy(message, got, offset, read + offset);
got += read;
//ToDo don't ignore probably following requests
if (got >= length) {
let request = new request_1.Request(message, (data) => {
socket.write(data);
});
got = 0;
message = undefined;
length = 0;
onRequest(request);
}
});
});
this.tcp.listen(port, host);
break;
default:
throw new Error("Unknown socket type");
}
}
close() {
if (this.udp) {
this.udp.close();
}
else {
this.tcp.close();
}
}
}
exports.default = Listener;
//# sourceMappingURL=listener.js.map

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/// <reference types="node" />
export declare enum queryTypes {
/**
* IPv4 address
*/
A = 1,
/**
* Nameserver
*/
NS = 2,
/**
* Obsolete
*/
MD = 3,
/**
* Obsolete
*/
MF = 4,
/**
* Alias
*/
CNAME = 5,
/**
* Start of authority
*/
SOA = 6,
/**
* Experimental
*/
MB = 7,
/**
* Experimental
*/
MG = 8,
/**
* Experimental
*/
MR = 9,
/**
* Experimental
*/
NULL = 10,
/**
* Service description
*/
WKS = 11,
/**
* Reverse entry (inaddr.arpa)
*/
PTR = 12,
/**
* Host information
*/
HINFO = 13,
/**
* Mailbox / Mail-list information
*/
MINFO = 14,
/**
* Mail exchange
*/
MX = 15,
/**
* Text strings
*/
TXT = 16,
/**
* IPv6 address
*/
AAAA = 28,
/**
* SRV records
*/
SRV = 33,
/**
* Request to transfer entire zone
*/
AXFR = 252,
/**
* Request for mailbox related records
*/
MAILA = 254,
/**
* Request for mail agend RRs
*/
MAILB = 253,
/**
* Any class
*/
ANY = 255,
}
export declare class Request implements Message {
private sendCallback;
_header: MessageHeader;
readonly header: MessageHeader;
_questions: MessageQuestion[];
readonly questions: MessageQuestion[];
answers: RecourceRecord[];
authorities: RecourceRecord[];
additionals: RecourceRecord[];
_packet: Buffer;
constructor(packet: Buffer, sendCallback: (packet: Buffer) => any);
send(): void;
private serialize(truncate?, rcode?);
private serializeHeader();
private serializeQuestion(question);
private serializeResourceRecord(record);
private serializeName(name);
}
export declare class RecourceRecord implements MessageRecourceRecord {
NAME: string;
private _TYPE;
TYPE: number;
private _CLASS;
CLASS: number;
_TTL: number;
TTL: number;
RDATA: Buffer;
readonly RDLENGTH: number;
}

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const binary_parser_1 = require("binary-parser");
const MAX_LABEL_SIZE = 63;
var queryTypes;
(function (queryTypes) {
/**
* IPv4 address
*/
queryTypes[queryTypes["A"] = 1] = "A";
/**
* Nameserver
*/
queryTypes[queryTypes["NS"] = 2] = "NS";
/**
* Obsolete
*/
queryTypes[queryTypes["MD"] = 3] = "MD";
/**
* Obsolete
*/
queryTypes[queryTypes["MF"] = 4] = "MF";
/**
* Alias
*/
queryTypes[queryTypes["CNAME"] = 5] = "CNAME";
/**
* Start of authority
*/
queryTypes[queryTypes["SOA"] = 6] = "SOA";
/**
* Experimental
*/
queryTypes[queryTypes["MB"] = 7] = "MB";
/**
* Experimental
*/
queryTypes[queryTypes["MG"] = 8] = "MG";
/**
* Experimental
*/
queryTypes[queryTypes["MR"] = 9] = "MR";
/**
* Experimental
*/
queryTypes[queryTypes["NULL"] = 10] = "NULL";
/**
* Service description
*/
queryTypes[queryTypes["WKS"] = 11] = "WKS";
/**
* Reverse entry (inaddr.arpa)
*/
queryTypes[queryTypes["PTR"] = 12] = "PTR";
/**
* Host information
*/
queryTypes[queryTypes["HINFO"] = 13] = "HINFO";
/**
* Mailbox / Mail-list information
*/
queryTypes[queryTypes["MINFO"] = 14] = "MINFO";
/**
* Mail exchange
*/
queryTypes[queryTypes["MX"] = 15] = "MX";
/**
* Text strings
*/
queryTypes[queryTypes["TXT"] = 16] = "TXT";
/**
* IPv6 address
*/
queryTypes[queryTypes["AAAA"] = 28] = "AAAA";
/**
* SRV records
*/
queryTypes[queryTypes["SRV"] = 33] = "SRV";
/**
* Request to transfer entire zone
*/
queryTypes[queryTypes["AXFR"] = 252] = "AXFR";
/**
* Request for mailbox related records
*/
queryTypes[queryTypes["MAILA"] = 254] = "MAILA";
/**
* Request for mail agend RRs
*/
queryTypes[queryTypes["MAILB"] = 253] = "MAILB";
/**
* Any class
*/
queryTypes[queryTypes["ANY"] = 255] = "ANY";
})(queryTypes = exports.queryTypes || (exports.queryTypes = {}));
const headerParser = new binary_parser_1.Parser()
.endianess("big")
.uint16("ID")
.bit1("QR")
.bit4("OPCODE")
.bit1("AA")
.bit1("TC")
.bit1("RD")
.bit1("RA")
.bit1("Z")
.bit1("AD")
.bit1("CD")
.bit4("RCODE")
.uint16("QDCOUNT")
.uint16("ANCOUNT")
.uint16("NSCOUNT")
.uint16("ARCOUNT");
const labelParser = new binary_parser_1.Parser()
.endianess("big")
.uint8("dataLength")
.string("name", {
length: "dataLength",
encoding: "ascii"
});
const questionParser = new binary_parser_1.Parser()
.endianess("big")
.array("QNAME", {
type: labelParser,
readUntil: (item, buffer) => {
if (item.dataLength <= 0)
return true;
},
formatter: (value) => {
return value.map(e => e.name).join(".").slice(0, -1);
}
})
.uint16("QTYPE")
.uint16("QCLASS");
function parseQuestions(count, packet) {
return new binary_parser_1.Parser()
.endianess("big")
.array("questions", {
type: questionParser,
length: count
}).parse(packet).questions;
}
class Request {
constructor(packet, sendCallback) {
this.sendCallback = sendCallback;
this.answers = [];
this.authorities = [];
this.additionals = [];
this._packet = packet;
let headerData = Buffer.alloc(12);
packet.copy(headerData, 0, 0, 12);
let bodyData = Buffer.alloc(packet.length - 12);
packet.copy(bodyData, 0, 12, packet.length);
this._header = headerParser.parse(headerData);
this._header.AD = 0;
this._questions = parseQuestions(this._header.QDCOUNT, bodyData);
}
get header() {
return Object.assign({}, this._header);
}
get questions() {
return this._questions.map(e => e);
}
send() {
this.sendCallback(this.serialize());
}
serialize(truncate = false, rcode = 0) {
this._header.AA = 1;
this._header.ANCOUNT = this.answers.length;
this._header.ARCOUNT = this.additionals.length;
this._header.NSCOUNT = this.authorities.length;
this._header.QR = 1;
this._header.RCODE = rcode;
this._header.RA = 0;
let questions = this.questions.map(this.serializeQuestion, this);
let answers = this.answers.map(this.serializeResourceRecord, this);
let authority = this.authorities.map(this.serializeResourceRecord, this);
let additional = this.additionals.map(this.serializeResourceRecord, this);
let questionsByteLength = 0;
questions.forEach(e => questionsByteLength += e.length);
let answersByteLength = 0;
answers.forEach(e => answersByteLength += e.length);
let authorityByteLength = 0;
authority.forEach(e => authorityByteLength += e.length);
let additionalByteLength = 0;
additional.forEach(e => additionalByteLength += e.length);
let length = 12 + questionsByteLength + answersByteLength + authorityByteLength + additionalByteLength; //Header is always 12 byte large
if (truncate && length > 512) {
this._header.TC = 1;
//Buffer will ignore data that exeeds the max buffer length
length = 512;
}
let header = this.serializeHeader();
let data = Buffer.alloc(length);
let offset = 0;
let append = (buffer) => {
buffer.copy(data, offset, 0, buffer.length);
offset += buffer.length;
};
append(header);
questions.forEach(append);
answers.forEach(append);
authority.forEach(append);
additional.forEach(append);
return data;
}
serializeHeader() {
let header = this.header;
let data = Buffer.alloc(12);
data.writeUInt16BE(header.ID, 0);
var f = 0x0000;
f = f | (header.QR << 15);
f = f | (header.OPCODE << 11);
f = f | (header.AA << 10);
f = f | (header.TC << 9);
f = f | (header.RD << 8);
f = f | (header.RA << 7);
f = f | (header.Z << 6);
f = f | (header.AD << 5);
f = f | (header.CD << 4);
f = f | header.RCODE;
data.writeUInt16BE(f, 2);
data.writeUInt16BE(header.QDCOUNT, 4);
data.writeUInt16BE(header.ANCOUNT, 6);
data.writeUInt16BE(header.NSCOUNT, 8);
data.writeUInt16BE(header.ARCOUNT, 10);
return data;
}
serializeQuestion(question) {
let qname = this.serializeName(question.QNAME);
let data = Buffer.alloc(qname.length + 4);
qname.copy(data, 0, 0, qname.length);
let offset = qname.length;
data.writeUInt16BE(question.QTYPE, offset);
offset += 2;
data.writeUInt16BE(question.QCLASS, offset);
return data;
}
serializeResourceRecord(record) {
// TODO: Implement compression
let name = this.serializeName(record.NAME);
let data = Buffer.alloc(name.length + 10 + record.RDLENGTH); // For TYPE, CLASS, TTL, RLENGTH
name.copy(data, 0, 0, name.length);
let offset = name.length;
data.writeUInt16BE(record.TYPE, offset);
offset += 2;
data.writeUInt16BE(record.CLASS, offset);
offset += 2;
data.writeUInt32BE(record.TTL, offset);
offset += 4;
data.writeUInt16BE(record.RDLENGTH, offset);
offset += 2;
record.RDATA.copy(data, offset, 0, record.RDLENGTH);
return data;
}
serializeName(name) {
let length = 0;
let parts = name.split(".");
parts.forEach(e => {
// Length of part and byte that holds the length information
if (e.length > MAX_LABEL_SIZE)
throw new Error("Label to large");
length += e.length + 1;
});
length += 1; //Adding last 0 length octet
let data = Buffer.alloc(length);
let offset = 0;
parts.forEach(e => {
console.log(e.length);
data.writeUInt8(e.length, offset);
offset++;
data.write(e, offset, e.length);
offset += e.length;
});
data.writeUInt8(0, offset);
console.log("name |", data.toString("hex"), length);
return data;
}
}
exports.Request = Request;
class RecourceRecord {
set TYPE(value) {
if (value < 0 || value > 65535)
throw new TypeError("TYPE Range: 0 - 65.535");
this._TYPE = value;
}
get TYPE() {
return this._TYPE;
}
set CLASS(value) {
if (value < 0 || value > 65535)
throw new TypeError("CLASS Range: 0 - 65.535");
this._CLASS = value;
}
get CLASS() {
return this._CLASS;
}
set TTL(value) {
if (value < 0 || value > 4294967295)
throw new TypeError("TTL Range: 0 - 4.294.967.295");
}
get TTL() {
return this._TTL;
}
get RDLENGTH() {
return this.RDATA.length;
}
}
exports.RecourceRecord = RecourceRecord;
//# sourceMappingURL=request.js.map

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// const t = `71 15 01 00 00 01 00 00 00 00 00 00 02 64 63 08 73 65 72 76 69 63 65 73 0c 76 69 73 75 61 6c 73 74 75 64 69 6f 03 63 6f 6d 00 00 01 00 01`.split(" ").join("");
// // const tp = Buffer.from(t, "hex")
// // // import Parse from "./index";
// // import * as util from "util";
// // console.log(util.inspect(Parse(tp), false, 20, true));
//# sourceMappingURL=test.js.map

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{"version":3,"file":"test.js","sourceRoot":"","sources":["../src/test.ts"],"names":[],"mappings":"AAAA,6KAA6K;AAC7K,sCAAsC;AACtC,qCAAqC;AACrC,mCAAmC;AACnC,4DAA4D"}

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{
"name": "nodename-core",
"version": "0.1.0",
"main": "lib/listener.js",
"types": "lib/listener.d.ts",
"author": "Fabian Stamm <dev@fabianstamm.de>",
"license": "MIT",
"scripts": {
"build": "tsc",
"watch": "tsc --watch",
"test": "nodemon lib/test.js"
},
"devDependencies": {
"@types/binary-parser": "^1.3.0",
"@types/node": "^10.0.8",
"nodemon": "^1.17.4",
"typescript": "^2.8.3"
},
"dependencies": {
"binary-parser": "^1.3.2"
}
}

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import * as net from "net"
import * as dgram from "dgram";
import { Request } from "./request";
import { PassThrough } from "stream";
export default class Listener {
private udp: dgram.Socket
private tcp: net.Server
constructor(type: "udp" | "tcp", onRequest: (request: Request) => any, port: number, host: string = "0.0.0.0") {
switch (type) {
case "udp":
this.udp = dgram.createSocket("udp4")
this.udp.on("listening", () => {
console.log(`UDP Server Listening on ${port}`)
})
this.udp.on("message", (message, remote) => {
let request = new Request(message, (data) => {
// console.log("sending:", new Request(data, (a) => 0));
this.udp.send(data, remote.port, remote.address)
})
onRequest(request);
})
this.udp.bind(port, host)
break;
case "tcp":
console.log("Not correct implemented")
this.tcp = net.createServer((socket) => {
let length: number;
let got: number = 0;
let message = undefined;
socket.on("data", (data) => {
let offset = 0;
if (!message) {
length = data.readUInt16BE(0);
if (length > 2048) return socket.destroy(); //Requests with more that 2k are ignored
message = Buffer.alloc(length);
offset = 2;
}
let read = (data.length - offset) > (length - got) ? (length - got) : (data.length - offset);
data.copy(message, got, offset, read + offset)
got += read;
//ToDo don't ignore probably following requests
if (got >= length) {
let request = new Request(message, (data) => {
socket.write(data);
})
got = 0;
message = undefined;
length = 0;
onRequest(request);
}
});
});
this.tcp.listen(port, host);
break;
default:
throw new Error("Unknown socket type")
}
}
close() {
if (this.udp) {
this.udp.close();
} else {
this.tcp.close();
}
}
}

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import { Parser } from "binary-parser"
const MAX_LABEL_SIZE = 63;
export enum queryTypes {
/**
* IPv4 address
*/
A = 0x01,
/**
* Nameserver
*/
NS = 0x02, // nameserver
/**
* Obsolete
*/
MD = 0x03, // obsolete
/**
* Obsolete
*/
MF = 0x04, // obsolete
/**
* Alias
*/
CNAME = 0x05, // alias
/**
* Start of authority
*/
SOA = 0x06, // start of authority
/**
* Experimental
*/
MB = 0x07, // experimental
/**
* Experimental
*/
MG = 0x08, // experimental
/**
* Experimental
*/
MR = 0x09, // experimental
/**
* Experimental
*/
NULL = 0x0A, // experimental null RR
/**
* Service description
*/
WKS = 0x0B, // service description
/**
* Reverse entry (inaddr.arpa)
*/
PTR = 0x0C, // reverse entry (inaddr.arpa)
/**
* Host information
*/
HINFO = 0x0D, // host information
/**
* Mailbox / Mail-list information
*/
MINFO = 0x0E, // mailbox or mail list information
/**
* Mail exchange
*/
MX = 0x0F, // mail exchange
/**
* Text strings
*/
TXT = 0x10, // text strings
/**
* IPv6 address
*/
AAAA = 0x1C, // ipv6 address
/**
* SRV records
*/
SRV = 0x21, // srv records
/**
* Request to transfer entire zone
*/
AXFR = 0xFC, // request to transfer entire zone
/**
* Request for mailbox related records
*/
MAILA = 0xFE, // request for mailbox related records
/**
* Request for mail agend RRs
*/
MAILB = 0xFD, // request for mail agent RRs
/**
* Any class
*/
ANY = 0xFF, // any class
}
const headerParser = new Parser()
.endianess("big")
.uint16("ID")
.bit1("QR")
.bit4("OPCODE")
.bit1("AA")
.bit1("TC")
.bit1("RD")
.bit1("RA")
.bit1("Z")
.bit1("AD")
.bit1("CD")
.bit4("RCODE")
.uint16("QDCOUNT")
.uint16("ANCOUNT")
.uint16("NSCOUNT")
.uint16("ARCOUNT")
const labelParser = new Parser()
.endianess("big")
.uint8("dataLength")
.string("name", {
length: "dataLength",
encoding: "ascii"
})
const questionParser = new Parser()
.endianess("big")
.array("QNAME", {
type: labelParser,
readUntil: (item: any, buffer) => {
if (item.dataLength <= 0)
return true;
},
formatter: (value: { dataLength: number, name: string }[]) => {
return value.map(e => e.name).join(".").slice(0, -1);
}
})
.uint16("QTYPE")
.uint16("QCLASS")
function parseQuestions(count: number, packet: Buffer): MessageQuestion[] {
return <any>new Parser()
.endianess("big")
.array("questions", {
type: questionParser,
length: count
}).parse(packet).questions;
}
export class Request implements Message {
_header: MessageHeader;
get header() {
return Object.assign({}, this._header);
}
_questions: MessageQuestion[];
get questions() {
return this._questions.map(e => e);
}
answers: RecourceRecord[] = [];
authorities: RecourceRecord[] = [];
additionals: RecourceRecord[] = [];
_packet: Buffer;
constructor(packet: Buffer, private sendCallback: (packet: Buffer) => any) {
this._packet = packet;
let headerData = Buffer.alloc(12);
packet.copy(headerData, 0, 0, 12);
let bodyData = Buffer.alloc(packet.length - 12);
packet.copy(bodyData, 0, 12, packet.length);
this._header = <any>headerParser.parse(headerData);
this._header.AD = 0;
this._questions = parseQuestions(this._header.QDCOUNT, bodyData);
}
send() {
this.sendCallback(this.serialize());
}
private serialize(truncate: boolean = false, rcode: 0 | 1 | 2 | 3 | 4 | 5 = 0) {
this._header.AA = 1;
this._header.ANCOUNT = this.answers.length;
this._header.ARCOUNT = this.additionals.length;
this._header.NSCOUNT = this.authorities.length;
this._header.QR = 1;
this._header.RCODE = rcode;
this._header.RA = 0;
let questions = this.questions.map(this.serializeQuestion, this)
let answers = this.answers.map(this.serializeResourceRecord, this)
let authority = this.authorities.map(this.serializeResourceRecord, this)
let additional = this.additionals.map(this.serializeResourceRecord, this)
let questionsByteLength = 0;
questions.forEach(e => questionsByteLength += e.length);
let answersByteLength = 0;
answers.forEach(e => answersByteLength += e.length)
let authorityByteLength = 0;
authority.forEach(e => authorityByteLength += e.length)
let additionalByteLength = 0;
additional.forEach(e => additionalByteLength += e.length)
let length = 12 + questionsByteLength + answersByteLength + authorityByteLength + additionalByteLength; //Header is always 12 byte large
if (truncate && length > 512) {
this._header.TC = 1;
//Buffer will ignore data that exeeds the max buffer length
length = 512;
}
let header = this.serializeHeader()
let data = Buffer.alloc(length)
let offset = 0;
let append = (buffer: Buffer) => {
buffer.copy(data, offset, 0, buffer.length)
offset += buffer.length;
}
append(header)
questions.forEach(append)
answers.forEach(append)
authority.forEach(append)
additional.forEach(append)
return data;
}
private serializeHeader() {
let header = this.header;
let data = Buffer.alloc(12);
data.writeUInt16BE(header.ID, 0);
var f = 0x0000;
f = f | (header.QR << 15);
f = f | (header.OPCODE << 11);
f = f | (header.AA << 10);
f = f | (header.TC << 9);
f = f | (header.RD << 8);
f = f | (header.RA << 7);
f = f | (header.Z << 6);
f = f | (header.AD << 5);
f = f | (header.CD << 4);
f = f | header.RCODE;
data.writeUInt16BE(f, 2);
data.writeUInt16BE(header.QDCOUNT, 4)
data.writeUInt16BE(header.ANCOUNT, 6)
data.writeUInt16BE(header.NSCOUNT, 8)
data.writeUInt16BE(header.ARCOUNT, 10)
return data;
}
private serializeQuestion(question: MessageQuestion) {
let qname = this.serializeName(question.QNAME);
let data = Buffer.alloc(qname.length + 4);
qname.copy(data, 0, 0, qname.length);
let offset = qname.length;
data.writeUInt16BE(question.QTYPE, offset);
offset += 2;
data.writeUInt16BE(question.QCLASS, offset);
return data;
}
private serializeResourceRecord(record: MessageRecourceRecord) {
// TODO: Implement compression
let name = this.serializeName(record.NAME);
let data = Buffer.alloc(name.length + 10 + record.RDLENGTH) // For TYPE, CLASS, TTL, RLENGTH
name.copy(data, 0, 0, name.length);
let offset = name.length;
data.writeUInt16BE(record.TYPE, offset)
offset += 2
data.writeUInt16BE(record.CLASS, offset)
offset += 2
data.writeUInt32BE(record.TTL, offset)
offset += 4
data.writeUInt16BE(record.RDLENGTH, offset)
offset += 2
record.RDATA.copy(data, offset, 0, record.RDLENGTH)
return data;
}
private serializeName(name: string) {
let length = 0;
let parts = name.split(".");
parts.forEach(e => {
// Length of part and byte that holds the length information
if (e.length > MAX_LABEL_SIZE) throw new Error("Label to large");
length += e.length + 1;
})
length += 1; //Adding last 0 length octet
let data = Buffer.alloc(length);
let offset = 0;
parts.forEach(e => {
console.log(e.length);
data.writeUInt8(e.length, offset)
offset++
data.write(e, offset, e.length)
offset += e.length
})
data.writeUInt8(0, offset);
console.log("name |", data.toString("hex"), length)
return data;
}
}
export class RecourceRecord implements MessageRecourceRecord {
NAME: string
private _TYPE: number;
set TYPE(value) {
if (value < 0 || value > 65535) throw new TypeError("TYPE Range: 0 - 65.535")
this._TYPE = value;
}
get TYPE() {
return this._TYPE;
}
private _CLASS: number;
set CLASS(value) {
if (value < 0 || value > 65535) throw new TypeError("CLASS Range: 0 - 65.535")
this._CLASS = value;
}
get CLASS() {
return this._CLASS;
}
_TTL: number;
set TTL(value) {
if (value < 0 || value > 4294967295) throw new TypeError("TTL Range: 0 - 4.294.967.295")
}
get TTL() {
return this._TTL;
}
RDATA: Buffer;
get RDLENGTH() {
return this.RDATA.length;
}
}

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src/test.ts Normal file
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// const t = `71 15 01 00 00 01 00 00 00 00 00 00 02 64 63 08 73 65 72 76 69 63 65 73 0c 76 69 73 75 61 6c 73 74 75 64 69 6f 03 63 6f 6d 00 00 01 00 01`.split(" ").join("");
// // const tp = Buffer.from(t, "hex")
// // // import Parse from "./index";
// // import * as util from "util";
// // console.log(util.inspect(Parse(tp), false, 20, true));

177
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interface MessageHeader {
/**
* A 16 bit identifier assigned by the program that
* generates any kind of query. This identifier is copied
* the corresponding reply and can be used by the requester
* to match up replies to outstanding queries.
*/
ID: number
/**
* Defines if query or response
*/
QR: 0 | 1
/**
* 4 Bit code, that defines type of query.
* 0 Standard query
* 1 Inverse query
* 2 Server status request
* 3-15 reserved for future use
*/
OPCODE: number
/**
* Authorative Answer - only valid in responses and
* specifies that the responding name server is an
* authority for the domain name in question section
*/
AA: 0 | 1
/**
* Truncation - specifies that his message was truncated doe to
* length grater than permitted on the transaction channel
*
* WARNING: NOT IMPLEMENTED IN THIS APPLICATION
*/
TC: 0 | 1
/**
* Recursion Desired - set in query and copied to response
* if is set, directs name server to pursue the query recursively
*
* WARNING: NOT IMPLEMENTED IN THIS APPLICATION
*/
RD: 0 | 1
/**
* Recursion Available - will be cleared in response to
* show the client that recursion is not available
*/
RA: 0 | 1
/**
* Reserved for future usage, must be 0 in all queries
*/
Z: 0
AD: 0 | 1
CD: 0 | 1
/**
* Response Code - 4 bit field is part of response
*
* 0 No error condition
* 1 Format error - unable to interpret query
* 2 Server failure - internal problem
* 3 Name error - Only for authorative name server, domain name of query does not exist
* 4 Not implemented - Request not supported
* 5 Refused - Nameserver refuses request
* 6-15 Reserved for future usage
*/
RCODE: 0 | 1 | 2 | 3 | 4 | 5
/**
* Number of entries in question section
* uint16
*/
QDCOUNT: number
/**
* Number of entries in answer section
* uint16
*/
ANCOUNT: number
/**
* Number of resource records in authority records section
* uint16
*/
NSCOUNT: number
/**
* Number of resource records in additional records section
* uint16
*/
ARCOUNT: number
}
interface MessageQuestion {
/**
* Domain name represented as sequence of labels
* Each label consists of a length octed followed
* by that number of octeds
*/
QNAME: string
/**
* Two octed code wich specifies the type of the query.
*/
QTYPE: number
/**
* Two octed code that specifies the class of the Query
* IS for internet
* WARNING: ONLY IN IS SUPPORTED BY THIS APPLICATION
*/
QCLASS: number
}
interface MessageRecourceRecord {
/**
* Domain name to wich resource record pertains
*/
NAME: string
/**
* Two octets containing TT type code.
* Specifies meaning of data in RDATA field
*
* uint16
*/
TYPE: number
/**
* Two octets specifying class of RDATA field
*
* uint16
*/
CLASS: number
/**
* Specifies Time Interval (in seconds) that the record
* may be cached before discarded.
* Zero values are not cached
*
* uint32
*/
TTL: number
/**
* Length of RDATA field
*
* uint16
*/
RDLENGTH: number
/**
* a variable length string of ectets taht describes
* the resource. The format is defined by TYPE and CLASS
* field.
*
* If TYPE is A and CLASS is IN, RDATA is a 4 octet
* ARPA internet address.
*/
RDATA: Buffer
}
interface Message {
header: MessageHeader
questions: MessageQuestion[]
answers: MessageRecourceRecord[];
authorities: MessageRecourceRecord[];
additionals: MessageRecourceRecord[];
}

55
tsconfig.json Normal file
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{
"compilerOptions": {
/* Basic Options */
"target": "es2017", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */
"module": "commonjs", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
// "lib": [], /* Specify library files to be included in the compilation. */
// "allowJs": true, /* Allow javascript files to be compiled. */
// "checkJs": true, /* Report errors in .js files. */
// "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
"declaration": true, /* Generates corresponding '.d.ts' file. */
"sourceMap": true, /* Generates corresponding '.map' file. */
// "outFile": "./", /* Concatenate and emit output to single file. */
"outDir": "./lib", /* Redirect output structure to the directory. */
// "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
// "removeComments": true, /* Do not emit comments to output. */
// "noEmit": true, /* Do not emit outputs. */
// "importHelpers": true, /* Import emit helpers from 'tslib'. */
// "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
// "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
/* Strict Type-Checking Options */
"strict": false, /* Enable all strict type-checking options. */
// "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */
// "strictNullChecks": true, /* Enable strict null checks. */
// "strictFunctionTypes": true, /* Enable strict checking of function types. */
// "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */
// "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */
// "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */
/* Additional Checks */
// "noUnusedLocals": true, /* Report errors on unused locals. */
// "noUnusedParameters": true, /* Report errors on unused parameters. */
// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
/* Module Resolution Options */
// "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
// "baseUrl": "./", /* Base directory to resolve non-absolute module names. */
// "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
// "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */
// "typeRoots": [], /* List of folders to include type definitions from. */
// "types": [], /* Type declaration files to be included in compilation. */
// "allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
//"esModuleInterop": false /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
// "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */
/* Source Map Options */
// "sourceRoot": "./", /* Specify the location where debugger should locate TypeScript files instead of source locations. */
// "mapRoot": "./", /* Specify the location where debugger should locate map files instead of generated locations. */
// "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */
// "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
/* Experimental Options */
// "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */
// "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */
},
"include": [
"./src"
]
}