Compare commits
4 Commits
9dac9184e7
...
6dad6c5d56
| Author | SHA1 | Date |
|---|---|---|
Fabian Stamm
|
6dad6c5d56 | |
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Fabian Stamm
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4e3cf05d29 | |
|
Fabian Stamm
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a34cd4bac2 | |
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Fabian Stamm
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c57260e11b |
|
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@ -0,0 +1,9 @@
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root = true
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[*]
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indent_style = space
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indent_size = 3
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end_of_line = lf
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charset = utf-8
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trim_trailing_whitespace = true
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insert_final_newline = false
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@ -2,6 +2,6 @@ import { Request } from "./request";
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export default class Listener {
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private udp;
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private tcp;
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constructor(type: "udp" | "tcp", onRequest: (request: Request) => any, port: number, host?: string);
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constructor(type: "udp" | "tcp", onRequest: (request: Request) => any, host?: string);
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close(): void;
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}
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|
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@ -4,12 +4,12 @@ const net = require("net");
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const dgram = require("dgram");
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const request_1 = require("./request");
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class Listener {
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constructor(type, onRequest, port, host = "0.0.0.0") {
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constructor(type, onRequest, host = "0.0.0.0") {
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switch (type) {
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case "udp":
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this.udp = dgram.createSocket("udp4");
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this.udp.on("listening", () => {
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console.log(`UDP Server Listening on ${port}`);
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console.log(`UDP Server Listening on 53`);
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});
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this.udp.on("message", (message, remote) => {
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let request = new request_1.Request(message, (data) => {
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@ -18,7 +18,7 @@ class Listener {
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});
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onRequest(request);
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});
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this.udp.bind(port, host);
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this.udp.bind(53, host);
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break;
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case "tcp":
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console.log("Not correct implemented");
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@ -50,7 +50,8 @@ class Listener {
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}
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});
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});
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this.tcp.listen(port, host);
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this.tcp.listen(53, host);
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console.log(`TCP Server Listening on 53`);
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break;
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default:
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throw new Error("Unknown socket type");
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|
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@ -1 +1 @@
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{"version":3,"file":"listener.js","sourceRoot":"","sources":["../src/listener.ts"],"names":[],"mappings":";;AAAA,2BAA0B;AAC1B,+BAA+B;AAC/B,uCAAoC;AAEpC;IAGG,YAAY,IAAmB,EAAE,SAAoC,EAAE,IAAY,EAAE,OAAe,SAAS;QAC1G,QAAQ,IAAI,EAAE;YACX,KAAK,KAAK;gBACP,IAAI,CAAC,GAAG,GAAG,KAAK,CAAC,YAAY,CAAC,MAAM,CAAC,CAAA;gBACrC,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,WAAW,EAAE,GAAG,EAAE;oBAC3B,OAAO,CAAC,GAAG,CAAC,2BAA2B,IAAI,EAAE,CAAC,CAAA;gBACjD,CAAC,CAAC,CAAA;gBAEF,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,SAAS,EAAE,CAAC,OAAO,EAAE,MAAM,EAAE,EAAE;oBACxC,IAAI,OAAO,GAAG,IAAI,iBAAO,CAAC,OAAO,EAAE,CAAC,IAAI,EAAE,EAAE;wBACzC,wDAAwD;wBACxD,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,IAAI,EAAE,MAAM,CAAC,IAAI,EAAE,MAAM,CAAC,OAAO,CAAC,CAAA;oBACnD,CAAC,CAAC,CAAA;oBACF,SAAS,CAAC,OAAO,CAAC,CAAC;gBACtB,CAAC,CAAC,CAAA;gBAEF,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,IAAI,EAAE,IAAI,CAAC,CAAA;gBACzB,MAAM;YACT,KAAK,KAAK;gBACP,OAAO,CAAC,GAAG,CAAC,yBAAyB,CAAC,CAAA;gBACtC,IAAI,CAAC,GAAG,GAAG,GAAG,CAAC,YAAY,CAAC,CAAC,MAAM,EAAE,EAAE;oBACpC,IAAI,MAAc,CAAC;oBACnB,IAAI,GAAG,GAAW,CAAC,CAAC;oBACpB,IAAI,OAAO,GAAG,SAAS,CAAC;oBACxB,MAAM,CAAC,EAAE,CAAC,MAAM,EAAE,CAAC,IAAI,EAAE,EAAE;wBACxB,IAAI,MAAM,GAAG,CAAC,CAAC;wBACf,IAAI,CAAC,OAAO,EAAE;4BACX,MAAM,GAAG,IAAI,CAAC,YAAY,CAAC,CAAC,CAAC,CAAC;4BAC9B,IAAI,MAAM,GAAG,IAAI;gCAAE,OAAO,MAAM,CAAC,OAAO,EAAE,CAAC,CAAC,wCAAwC;4BACpF,OAAO,GAAG,MAAM,CAAC,KAAK,CAAC,MAAM,CAAC,CAAC;4BAC/B,MAAM,GAAG,CAAC,CAAC;yBACb;wBAED,IAAI,IAAI,GAAG,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,CAAC,MAAM,GAAG,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,MAAM,GAAG,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC;wBAC7F,IAAI,CAAC,IAAI,CAAC,OAAO,EAAE,GAAG,EAAE,MAAM,EAAE,IAAI,GAAG,MAAM,CAAC,CAAA;wBAC9C,GAAG,IAAI,IAAI,CAAC;wBACZ,+CAA+C;wBAC/C,IAAI,GAAG,IAAI,MAAM,EAAE;4BAChB,IAAI,OAAO,GAAG,IAAI,iBAAO,CAAC,OAAO,EAAE,CAAC,IAAI,EAAE,EAAE;gCACzC,MAAM,CAAC,KAAK,CAAC,IAAI,CAAC,CAAC;4BACtB,CAAC,CAAC,CAAA;4BACF,GAAG,GAAG,CAAC,CAAC;4BACR,OAAO,GAAG,SAAS,CAAC;4BACpB,MAAM,GAAG,CAAC,CAAC;4BACX,SAAS,CAAC,OAAO,CAAC,CAAC;yBACrB;oBACJ,CAAC,CAAC,CAAC;gBACN,CAAC,CAAC,CAAC;gBACH,IAAI,CAAC,GAAG,CAAC,MAAM,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC;gBAC5B,MAAM;YACT;gBACG,MAAM,IAAI,KAAK,CAAC,qBAAqB,CAAC,CAAA;SAC3C;IACJ,CAAC;IAED,KAAK;QACF,IAAI,IAAI,CAAC,GAAG,EAAE;YACX,IAAI,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC;SACnB;aAAM;YACJ,IAAI,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC;SACnB;IACJ,CAAC;CACH;AAjED,2BAiEC"}
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{"version":3,"file":"listener.js","sourceRoot":"","sources":["../src/listener.ts"],"names":[],"mappings":";;AAAA,2BAA0B;AAC1B,+BAA+B;AAC/B,uCAAoC;AAGpC;IAGG,YAAY,IAAmB,EAAE,SAAoC,EAAE,OAAe,SAAS;QAC5F,QAAQ,IAAI,EAAE;YACX,KAAK,KAAK;gBACP,IAAI,CAAC,GAAG,GAAG,KAAK,CAAC,YAAY,CAAC,MAAM,CAAC,CAAA;gBACrC,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,WAAW,EAAE,GAAG,EAAE;oBAC3B,OAAO,CAAC,GAAG,CAAC,4BAA4B,CAAC,CAAA;gBAC5C,CAAC,CAAC,CAAA;gBAEF,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,SAAS,EAAE,CAAC,OAAO,EAAE,MAAM,EAAE,EAAE;oBACxC,IAAI,OAAO,GAAG,IAAI,iBAAO,CAAC,OAAO,EAAE,CAAC,IAAI,EAAE,EAAE;wBACzC,wDAAwD;wBACxD,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,IAAI,EAAE,MAAM,CAAC,IAAI,EAAE,MAAM,CAAC,OAAO,CAAC,CAAA;oBACnD,CAAC,CAAC,CAAA;oBACF,SAAS,CAAC,OAAO,CAAC,CAAC;gBACtB,CAAC,CAAC,CAAA;gBAEF,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,EAAE,EAAE,IAAI,CAAC,CAAA;gBACvB,MAAM;YACT,KAAK,KAAK;gBACP,OAAO,CAAC,GAAG,CAAC,yBAAyB,CAAC,CAAA;gBACtC,IAAI,CAAC,GAAG,GAAG,GAAG,CAAC,YAAY,CAAC,CAAC,MAAM,EAAE,EAAE;oBACpC,IAAI,MAAc,CAAC;oBACnB,IAAI,GAAG,GAAW,CAAC,CAAC;oBACpB,IAAI,OAAO,GAAG,SAAS,CAAC;oBACxB,MAAM,CAAC,EAAE,CAAC,MAAM,EAAE,CAAC,IAAI,EAAE,EAAE;wBACxB,IAAI,MAAM,GAAG,CAAC,CAAC;wBACf,IAAI,CAAC,OAAO,EAAE;4BACX,MAAM,GAAG,IAAI,CAAC,YAAY,CAAC,CAAC,CAAC,CAAC;4BAC9B,IAAI,MAAM,GAAG,IAAI;gCAAE,OAAO,MAAM,CAAC,OAAO,EAAE,CAAC,CAAC,wCAAwC;4BACpF,OAAO,GAAG,MAAM,CAAC,KAAK,CAAC,MAAM,CAAC,CAAC;4BAC/B,MAAM,GAAG,CAAC,CAAC;yBACb;wBAED,IAAI,IAAI,GAAG,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,CAAC,MAAM,GAAG,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,MAAM,GAAG,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC;wBAC7F,IAAI,CAAC,IAAI,CAAC,OAAO,EAAE,GAAG,EAAE,MAAM,EAAE,IAAI,GAAG,MAAM,CAAC,CAAA;wBAC9C,GAAG,IAAI,IAAI,CAAC;wBACZ,+CAA+C;wBAC/C,IAAI,GAAG,IAAI,MAAM,EAAE;4BAChB,IAAI,OAAO,GAAG,IAAI,iBAAO,CAAC,OAAO,EAAE,CAAC,IAAI,EAAE,EAAE;gCACzC,MAAM,CAAC,KAAK,CAAC,IAAI,CAAC,CAAC;4BACtB,CAAC,CAAC,CAAA;4BACF,GAAG,GAAG,CAAC,CAAC;4BACR,OAAO,GAAG,SAAS,CAAC;4BACpB,MAAM,GAAG,CAAC,CAAC;4BACX,SAAS,CAAC,OAAO,CAAC,CAAC;yBACrB;oBACJ,CAAC,CAAC,CAAC;gBACN,CAAC,CAAC,CAAC;gBACH,IAAI,CAAC,GAAG,CAAC,MAAM,CAAC,EAAE,EAAE,IAAI,CAAC,CAAC;gBAC1B,OAAO,CAAC,GAAG,CAAC,4BAA4B,CAAC,CAAA;gBACzC,MAAM;YACT;gBACG,MAAM,IAAI,KAAK,CAAC,qBAAqB,CAAC,CAAA;SAC3C;IACJ,CAAC;IAED,KAAK;QACF,IAAI,IAAI,CAAC,GAAG,EAAE;YACX,IAAI,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC;SACnB;aAAM;YACJ,IAAI,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC;SACnB;IACJ,CAAC;CACH;AAlED,2BAkEC"}
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@ -1,113 +1,49 @@
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/// <reference types="node" />
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import { Message, MessageHeader, MessageQuestion, MessageRecourceRecord, ErrorCodes } from "./types";
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export declare enum QueryTypes {
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/**
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* IPv4 address
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*/
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A = 1,
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/**
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* Nameserver
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*/
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NS = 2,
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/**
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* Obsolete
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*/
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MD = 3,
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/**
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* Obsolete
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*/
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MF = 4,
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/**
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* Alias
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*/
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CNAME = 5,
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/**
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* Start of authority
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*/
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SOA = 6,
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/**
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* Experimental
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*/
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MB = 7,
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/**
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* Experimental
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*/
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MG = 8,
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/**
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* Experimental
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*/
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MR = 9,
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/**
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* Experimental
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*/
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NULL = 10,
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/**
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* Service description
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*/
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WKS = 11,
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/**
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* Reverse entry (inaddr.arpa)
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*/
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PTR = 12,
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/**
|
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* Host information
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*/
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HINFO = 13,
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/**
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* Mailbox / Mail-list information
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*/
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MINFO = 14,
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/**
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* Mail exchange
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*/
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MX = 15,
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/**
|
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* Text strings
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*/
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TXT = 16,
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/**
|
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* IPv6 address
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*/
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AAAA = 28,
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/**
|
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* SRV records
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*/
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SRV = 33,
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/**
|
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* Request to transfer entire zone
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*/
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AXFR = 252,
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/**
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* Request for mailbox related records
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*/
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MAILA = 254,
|
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/**
|
||||
* Request for mail agend RRs
|
||||
*/
|
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MAILB = 253,
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/**
|
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* Any class
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||||
*/
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ANY = 255,
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}
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export declare function SerializeName(name: string): Buffer;
|
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export declare class Request implements Message {
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import { IMessage, IMessageHeader, IMessageQuestion, MessageRecourceRecord, ErrorCodes } from "./types";
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export declare function parseHeader(data: Buffer): IMessageHeader;
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export declare function parseQuestions(count: number, packet: Buffer): IMessageQuestion[];
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export declare function serializeName(name: string): Buffer;
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export declare class Request implements IMessage {
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private sendCallback;
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private max_size;
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private _header;
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readonly header: MessageHeader;
|
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readonly header: Header;
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private _questions;
|
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readonly questions: MessageQuestion[];
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readonly questions: Question[];
|
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answers: RecourceRecord[];
|
||||
authorities: RecourceRecord[];
|
||||
additionals: RecourceRecord[];
|
||||
constructor(packet: Buffer, sendCallback: (packet: Buffer) => any);
|
||||
constructor(packet: Buffer, sendCallback: (packet: Buffer) => any, max_size?: number);
|
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error(error: ErrorCodes): void;
|
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noRecursion(): void;
|
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send(): void;
|
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serialize(truncate?: boolean, rcode?: 0 | 1 | 2 | 3 | 4 | 5): Buffer;
|
||||
private serializeHeader();
|
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private serializeQuestion(question);
|
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private serializeResourceRecord(record);
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serialize(): Buffer;
|
||||
}
|
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export declare class Header implements IMessageHeader {
|
||||
ID: number;
|
||||
QR: 0 | 1;
|
||||
OPCODE: number;
|
||||
AA: 0 | 1;
|
||||
TC: 0 | 1;
|
||||
RD: 0 | 1;
|
||||
RA: 0 | 1;
|
||||
Z: 0 | 1;
|
||||
AD: 0 | 1;
|
||||
CD: 0 | 1;
|
||||
RCODE: ErrorCodes;
|
||||
QDCOUNT: number;
|
||||
ANCOUNT: number;
|
||||
NSCOUNT: number;
|
||||
ARCOUNT: number;
|
||||
constructor(header: IMessageHeader);
|
||||
serialize(): Buffer;
|
||||
}
|
||||
export declare class Question implements IMessageQuestion {
|
||||
QNAME: string;
|
||||
QTYPE: number;
|
||||
QCLASS: number;
|
||||
constructor(question: IMessageQuestion);
|
||||
serialize(): Buffer;
|
||||
}
|
||||
export declare class RecourceRecord implements MessageRecourceRecord {
|
||||
/**
|
||||
|
|
@ -123,4 +59,5 @@ export declare class RecourceRecord implements MessageRecourceRecord {
|
|||
TTL: number;
|
||||
RDATA: Buffer;
|
||||
readonly RDLENGTH: number;
|
||||
serialize(): Buffer;
|
||||
}
|
||||
|
|
|
|||
287
lib/request.js
287
lib/request.js
|
|
@ -2,98 +2,6 @@
|
|||
Object.defineProperty(exports, "__esModule", { value: true });
|
||||
const binary_parser_1 = require("binary-parser");
|
||||
const types_1 = require("./types");
|
||||
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")
|
||||
|
|
@ -111,6 +19,15 @@ const headerParser = new binary_parser_1.Parser()
|
|||
.uint16("ANCOUNT")
|
||||
.uint16("NSCOUNT")
|
||||
.uint16("ARCOUNT");
|
||||
function parseHeader(data) {
|
||||
try {
|
||||
return headerParser.parse(data);
|
||||
}
|
||||
catch (e) {
|
||||
throw new Error("Header parsing failed" + e.message);
|
||||
}
|
||||
}
|
||||
exports.parseHeader = parseHeader;
|
||||
const labelParser = new binary_parser_1.Parser()
|
||||
.endianess("big")
|
||||
.uint8("dataLength")
|
||||
|
|
@ -133,14 +50,21 @@ const questionParser = new binary_parser_1.Parser()
|
|||
.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;
|
||||
try {
|
||||
return new binary_parser_1.Parser()
|
||||
.endianess("big")
|
||||
.array("questions", {
|
||||
type: questionParser,
|
||||
length: count
|
||||
}).parse(packet).questions;
|
||||
}
|
||||
catch (e) {
|
||||
throw new Error("Question parsing failed" + e.message);
|
||||
}
|
||||
}
|
||||
function SerializeName(name) {
|
||||
exports.parseQuestions = parseQuestions;
|
||||
const MAX_LABEL_SIZE = 63;
|
||||
function serializeName(name) {
|
||||
let length = 0;
|
||||
let parts = name.split(".");
|
||||
parts.forEach(e => {
|
||||
|
|
@ -161,10 +85,11 @@ function SerializeName(name) {
|
|||
data.writeUInt8(0, offset);
|
||||
return data;
|
||||
}
|
||||
exports.SerializeName = SerializeName;
|
||||
exports.serializeName = serializeName;
|
||||
class Request {
|
||||
constructor(packet, sendCallback) {
|
||||
constructor(packet, sendCallback, max_size = 512) {
|
||||
this.sendCallback = sendCallback;
|
||||
this.max_size = max_size;
|
||||
this.answers = [];
|
||||
this.authorities = [];
|
||||
this.additionals = [];
|
||||
|
|
@ -172,17 +97,17 @@ class Request {
|
|||
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 = new Header(parseHeader(headerData));
|
||||
this._header.AD = 0;
|
||||
this._header.RCODE = types_1.ErrorCodes.NoError;
|
||||
this._header.RA = this._header.RD;
|
||||
this._questions = parseQuestions(this._header.QDCOUNT, bodyData);
|
||||
this._questions = parseQuestions(this._header.QDCOUNT, bodyData).map(e => new Question(e));
|
||||
}
|
||||
get header() {
|
||||
return Object.assign({}, this._header);
|
||||
}
|
||||
get questions() {
|
||||
return this._questions.map(e => e);
|
||||
return this._questions.map(e => Object.assign({}, e));
|
||||
}
|
||||
error(error) {
|
||||
if (this._header.RCODE === types_1.ErrorCodes.NoError)
|
||||
|
|
@ -194,37 +119,43 @@ class Request {
|
|||
send() {
|
||||
this.sendCallback(this.serialize());
|
||||
}
|
||||
serialize(truncate = false, rcode = 0) {
|
||||
serialize() {
|
||||
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;
|
||||
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) {
|
||||
let questions = this._questions.map(e => e.serialize());
|
||||
let answers = this.answers.map(e => e.serialize());
|
||||
let authority = this.authorities.map(e => e.serialize());
|
||||
let additional = this.additionals.map(e => e.serialize());
|
||||
let length = 12;
|
||||
questions.forEach(e => length += e.length);
|
||||
answers.forEach(e => length += e.length);
|
||||
authority.forEach(e => length += e.length);
|
||||
additional.forEach(e => length += e.length);
|
||||
// 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 (length > this.max_size) {
|
||||
this._header.TC = 1;
|
||||
//Buffer will ignore data that exeeds the max buffer length
|
||||
length = 512;
|
||||
//Will ignore data, that exceeds length
|
||||
length = this.max_size;
|
||||
}
|
||||
let header = this.serializeHeader();
|
||||
let header = this._header.serialize();
|
||||
let data = Buffer.alloc(length);
|
||||
let offset = 0;
|
||||
let append = (buffer) => {
|
||||
buffer.copy(data, offset, 0, buffer.length);
|
||||
offset += buffer.length;
|
||||
if (offset <= length) {
|
||||
buffer.copy(data, offset, 0, buffer.length);
|
||||
offset += buffer.length;
|
||||
}
|
||||
};
|
||||
append(header);
|
||||
questions.forEach(append);
|
||||
|
|
@ -233,57 +164,55 @@ class Request {
|
|||
additional.forEach(append);
|
||||
return data;
|
||||
}
|
||||
serializeHeader() {
|
||||
let header = this.header;
|
||||
}
|
||||
exports.Request = Request;
|
||||
class Header {
|
||||
constructor(header) {
|
||||
for (let k in header) {
|
||||
this[k] = header[k];
|
||||
}
|
||||
}
|
||||
serialize() {
|
||||
let data = Buffer.alloc(12);
|
||||
data.writeUInt16BE(header.ID, 0);
|
||||
data.writeUInt16BE(this.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;
|
||||
f = f | (this.QR << 15);
|
||||
f = f | (this.OPCODE << 11);
|
||||
f = f | (this.AA << 10);
|
||||
f = f | (this.TC << 9);
|
||||
f = f | (this.RD << 8);
|
||||
f = f | (this.RA << 7);
|
||||
f = f | (this.Z << 6);
|
||||
f = f | (this.AD << 5);
|
||||
f = f | (this.CD << 4);
|
||||
f = f | this.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 = 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 = 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);
|
||||
data.writeUInt16BE(this.QDCOUNT, 4);
|
||||
data.writeUInt16BE(this.ANCOUNT, 6);
|
||||
data.writeUInt16BE(this.NSCOUNT, 8);
|
||||
data.writeUInt16BE(this.ARCOUNT, 10);
|
||||
return data;
|
||||
}
|
||||
}
|
||||
exports.Request = Request;
|
||||
exports.Header = Header;
|
||||
class Question {
|
||||
constructor(question) {
|
||||
for (let k in question) {
|
||||
this[k] = question[k];
|
||||
}
|
||||
}
|
||||
serialize() {
|
||||
let qname = serializeName(this.QNAME);
|
||||
let data = Buffer.alloc(qname.length + 4);
|
||||
qname.copy(data, 0, 0, qname.length);
|
||||
let offset = qname.length;
|
||||
data.writeUInt16BE(this.QTYPE, offset);
|
||||
offset += 2;
|
||||
data.writeUInt16BE(this.QCLASS, offset);
|
||||
return data;
|
||||
}
|
||||
}
|
||||
exports.Question = Question;
|
||||
class RecourceRecord {
|
||||
set TYPE(value) {
|
||||
if (value < 0 || value > 65535)
|
||||
|
|
@ -304,6 +233,7 @@ class RecourceRecord {
|
|||
set TTL(value) {
|
||||
if (value < 0 || value > 4294967295)
|
||||
throw new TypeError("TTL Range: 0 - 4.294.967.295");
|
||||
this._TTL = value;
|
||||
}
|
||||
get TTL() {
|
||||
return this._TTL;
|
||||
|
|
@ -311,6 +241,23 @@ class RecourceRecord {
|
|||
get RDLENGTH() {
|
||||
return this.RDATA.length;
|
||||
}
|
||||
serialize() {
|
||||
// TODO: Implement compression
|
||||
let name = serializeName(this.NAME);
|
||||
let data = Buffer.alloc(name.length + 10 + this.RDLENGTH); // For TYPE, CLASS, TTL, RLENGTH
|
||||
name.copy(data, 0, 0, name.length);
|
||||
let offset = name.length;
|
||||
data.writeUInt16BE(this.TYPE, offset);
|
||||
offset += 2;
|
||||
data.writeUInt16BE(this.CLASS, offset);
|
||||
offset += 2;
|
||||
data.writeUInt32BE(this._TTL, offset);
|
||||
offset += 4;
|
||||
data.writeUInt16BE(this.RDLENGTH, offset);
|
||||
offset += 2;
|
||||
this.RDATA.copy(data, offset, 0, this.RDLENGTH);
|
||||
return data;
|
||||
}
|
||||
}
|
||||
exports.RecourceRecord = RecourceRecord;
|
||||
//# sourceMappingURL=request.js.map
|
||||
File diff suppressed because one or more lines are too long
|
|
@ -0,0 +1 @@
|
|||
export {};
|
||||
353
lib/test.js
353
lib/test.js
|
|
@ -1,6 +1,349 @@
|
|||
// 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));
|
||||
"use strict";
|
||||
Object.defineProperty(exports, "__esModule", { value: true });
|
||||
const chai_1 = require("chai");
|
||||
const request_1 = require("./request");
|
||||
const types_1 = require("./types");
|
||||
function fromHex(data) {
|
||||
return Buffer.from(data.replace(/\s/g, ""), "hex");
|
||||
}
|
||||
describe("parser", function () {
|
||||
describe("header", function () {
|
||||
describe("header parser", function () {
|
||||
let should_templ = {
|
||||
ID: 0,
|
||||
QR: 0,
|
||||
OPCODE: 0,
|
||||
AA: 0,
|
||||
TC: 0,
|
||||
RD: 0,
|
||||
RA: 0,
|
||||
Z: 0,
|
||||
AD: 0,
|
||||
CD: 0,
|
||||
RCODE: 0,
|
||||
QDCOUNT: 0,
|
||||
ANCOUNT: 0,
|
||||
ARCOUNT: 0,
|
||||
NSCOUNT: 0
|
||||
};
|
||||
let tests = [
|
||||
{
|
||||
name: "Testing ID field",
|
||||
data: "0001 0000 0000 0000 0000 0000",
|
||||
fields: {
|
||||
ID: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing ID field with max value",
|
||||
data: "FFFF 0000 0000 0000 0000 0000",
|
||||
fields: {
|
||||
ID: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing QR field",
|
||||
data: "0000 8000 0000 0000 0000 0000",
|
||||
fields: {
|
||||
QR: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing OPCODE field value 2",
|
||||
data: "0000 1000 0000 0000 0000 0000",
|
||||
fields: {
|
||||
OPCODE: 2
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing OPCODE field value 1",
|
||||
data: "0000 0800 0000 0000 0000 0000",
|
||||
fields: {
|
||||
OPCODE: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing AA field",
|
||||
data: "0000 0400 0000 0000 0000 0000",
|
||||
fields: {
|
||||
AA: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing TC field",
|
||||
data: "0000 0200 0000 0000 0000 0000",
|
||||
fields: {
|
||||
TC: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing RD field",
|
||||
data: "0000 0100 0000 0000 0000 0000",
|
||||
fields: {
|
||||
RD: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing RCODE field",
|
||||
data: "0000 0002 0000 0000 0000 0000",
|
||||
fields: {
|
||||
RCODE: 2
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing QDCOUNT field max value",
|
||||
data: "0000 0000 FFFF 0000 0000 0000",
|
||||
fields: {
|
||||
QDCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing ANCOUNT field max value",
|
||||
data: "0000 0000 0000 FFFF 0000 0000",
|
||||
fields: {
|
||||
ANCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing NSCOUNT field max value",
|
||||
data: "0000 0000 0000 0000 FFFF 0000",
|
||||
fields: {
|
||||
NSCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing ARCOUNT field max value",
|
||||
data: "0000 0000 0000 0000 0000 FFFF",
|
||||
fields: {
|
||||
ARCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing all Flags and Values max",
|
||||
data: "FFFF FFFF FFFF FFFF FFFF FFFF",
|
||||
fields: {
|
||||
ID: 65535,
|
||||
QR: 1,
|
||||
OPCODE: 15,
|
||||
AA: 1,
|
||||
TC: 1,
|
||||
RD: 1,
|
||||
RA: 1,
|
||||
Z: 1,
|
||||
AD: 1,
|
||||
CD: 1,
|
||||
RCODE: 15,
|
||||
QDCOUNT: 65535,
|
||||
ANCOUNT: 65535,
|
||||
NSCOUNT: 65535,
|
||||
ARCOUNT: 65535
|
||||
}
|
||||
}
|
||||
];
|
||||
tests.forEach(function (e) {
|
||||
it(e.name, function () {
|
||||
let testdata = fromHex(e.data);
|
||||
let should = Object.assign({}, should_templ, e.fields); // Build in "clone" function
|
||||
let header = request_1.parseHeader(testdata);
|
||||
chai_1.assert.hasAllKeys(header, Object.keys(should), "Parsed header is missing some fields");
|
||||
chai_1.assert.deepEqual(header, should, "Parsed header has not expected values!");
|
||||
});
|
||||
});
|
||||
});
|
||||
describe("header serializer", function () {
|
||||
let empty_header = {
|
||||
ID: 0,
|
||||
QR: 0,
|
||||
OPCODE: 0,
|
||||
AA: 0,
|
||||
TC: 0,
|
||||
RD: 0,
|
||||
RA: 0,
|
||||
Z: 0,
|
||||
AD: 0,
|
||||
CD: 0,
|
||||
RCODE: 0,
|
||||
QDCOUNT: 0,
|
||||
ANCOUNT: 0,
|
||||
ARCOUNT: 0,
|
||||
NSCOUNT: 0
|
||||
};
|
||||
let tests = [
|
||||
{
|
||||
name: "Fill header with 0s",
|
||||
result: "0000 0000 0000 0000 0000 0000",
|
||||
values: {}
|
||||
},
|
||||
{
|
||||
name: "Set header id to 5",
|
||||
result: "0005 0000 0000 0000 0000 0000",
|
||||
values: {
|
||||
ID: 5
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set QR",
|
||||
result: "0000 8000 0000 0000 0000 0000",
|
||||
values: {
|
||||
QR: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set OPCODE",
|
||||
result: "0000 7800 0000 0000 0000 0000",
|
||||
values: {
|
||||
OPCODE: 15
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set AA",
|
||||
result: "0000 0400 0000 0000 0000 0000",
|
||||
values: {
|
||||
AA: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set TC",
|
||||
result: "0000 0200 0000 0000 0000 0000",
|
||||
values: {
|
||||
TC: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set RD",
|
||||
result: "0000 0100 0000 0000 0000 0000",
|
||||
values: {
|
||||
RD: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set RA",
|
||||
result: "0000 0080 0000 0000 0000 0000",
|
||||
values: {
|
||||
RA: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set Z",
|
||||
result: "0000 0040 0000 0000 0000 0000",
|
||||
values: {
|
||||
Z: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set AD",
|
||||
result: "0000 0020 0000 0000 0000 0000",
|
||||
values: {
|
||||
AD: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set CD",
|
||||
result: "0000 0010 0000 0000 0000 0000",
|
||||
values: {
|
||||
CD: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set RCODE",
|
||||
result: "0000 000F 0000 0000 0000 0000",
|
||||
values: {
|
||||
RCODE: 15
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set QDCOUNT",
|
||||
result: "0000 0000 FFFF 0000 0000 0000",
|
||||
values: {
|
||||
QDCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set ANCOUNT",
|
||||
result: "0000 0000 0000 FFFF 0000 0000",
|
||||
values: {
|
||||
ANCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set NSCOUNT",
|
||||
result: "0000 0000 0000 0000 FFFF 0000",
|
||||
values: {
|
||||
NSCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set ARCOUNT",
|
||||
result: "0000 0000 0000 0000 0000 FFFF",
|
||||
values: {
|
||||
ARCOUNT: 65535
|
||||
}
|
||||
},
|
||||
];
|
||||
tests.forEach(function (e) {
|
||||
it(e.name, function () {
|
||||
let header = Object.assign({}, empty_header, e.values);
|
||||
let serialized = new request_1.Header(header).serialize();
|
||||
chai_1.assert.equal(serialized.toString("hex"), e.result.replace(/\s/g, "").toLowerCase(), "Header serialization failed");
|
||||
});
|
||||
});
|
||||
});
|
||||
});
|
||||
describe("question", function () {
|
||||
let questionData = fromHex("0474 6573 7407 6578 616d 706c 6503 636f 6d00 0001 0001");
|
||||
let questionObj = {
|
||||
QNAME: "test.example.com",
|
||||
QTYPE: types_1.QueryTypes.A,
|
||||
QCLASS: 1
|
||||
};
|
||||
it("check question parser with one question", function () {
|
||||
let res = request_1.parseQuestions(1, questionData);
|
||||
let should = [questionObj];
|
||||
chai_1.assert.deepEqual(res, should, "Question parser does not parse input correctly");
|
||||
});
|
||||
it("check question serialization", function () {
|
||||
let res = new request_1.Question(questionObj).serialize();
|
||||
chai_1.assert.equal(res.toString("hex"), questionData.toString("hex"), "Query serializer does not serialite correctly");
|
||||
});
|
||||
});
|
||||
it("recource record serialization", function () {
|
||||
let should = "07 6578616D706C65 03 636f6D 00 0001 0001 00000640 0004 0A000001";
|
||||
let rr = new request_1.RecourceRecord();
|
||||
rr.CLASS = 1;
|
||||
rr.NAME = "example.com";
|
||||
rr.TTL = 1600;
|
||||
rr.TYPE = 1;
|
||||
rr.RDATA = fromHex("0A 00 00 01");
|
||||
let res = rr.serialize().toString("hex");
|
||||
chai_1.assert.equal(res, should.replace(/\s/g, "").toLowerCase(), "Serialization not working properly");
|
||||
});
|
||||
it("full response serialization", function () {
|
||||
let reqData = fromHex("E835 0100 0001 0000 0000 0000 07 6578616D706c65 03636F6D 00 0001 0001");
|
||||
let should = "E835 8580 0001000100000000 076578616D706C6503636F6D0000010001 07 6578616D706C65 03 636F6D 00 0001 0001 0000 0640 0004 0A000001";
|
||||
let request = new request_1.Request(reqData, () => null);
|
||||
let rr = new request_1.RecourceRecord();
|
||||
rr.CLASS = 1;
|
||||
rr.NAME = "example.com";
|
||||
rr.TTL = 1600;
|
||||
rr.TYPE = 1;
|
||||
rr.RDATA = fromHex("0A 00 00 01");
|
||||
request.answers.push(rr);
|
||||
let data = request.serialize();
|
||||
chai_1.assert.equal(data.toString("hex"), should.replace(/\s/g, "").toLowerCase(), "Whole packet serialization failed");
|
||||
});
|
||||
// it("full response serialization benchmark", function () {
|
||||
// let reqData = fromHex("E835 0100 0001 0000 0000 0000 07 6578616D706c65 03636F6D 00 0001 0001");
|
||||
// for (let i = 0; i < 100; i++) {
|
||||
// let request = new Request(reqData, () => null)
|
||||
// let rr = new RecourceRecord()
|
||||
// rr.CLASS = 1
|
||||
// rr.NAME = "example.com"
|
||||
// rr.TTL = 1600
|
||||
// rr.TYPE = 1
|
||||
// rr.RDATA = fromHex("0A 00 00 01")
|
||||
// request.answers.push(rr)
|
||||
// request.serialize()
|
||||
// }
|
||||
// })
|
||||
});
|
||||
//# sourceMappingURL=test.js.map
|
||||
File diff suppressed because one or more lines are too long
|
|
@ -25,7 +25,97 @@ export declare enum ErrorCodes {
|
|||
*/
|
||||
Refused = 5,
|
||||
}
|
||||
export interface MessageHeader {
|
||||
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 interface IMessageHeader {
|
||||
/**
|
||||
* A 16 bit identifier assigned by the program that
|
||||
* generates any kind of query. This identifier is copied
|
||||
|
|
@ -73,7 +163,7 @@ export interface MessageHeader {
|
|||
/**
|
||||
* Reserved for future usage, must be 0 in all queries
|
||||
*/
|
||||
Z: 0;
|
||||
Z: 0 | 1;
|
||||
AD: 0 | 1;
|
||||
CD: 0 | 1;
|
||||
/**
|
||||
|
|
@ -109,7 +199,7 @@ export interface MessageHeader {
|
|||
*/
|
||||
ARCOUNT: number;
|
||||
}
|
||||
export interface MessageQuestion {
|
||||
export interface IMessageQuestion {
|
||||
/**
|
||||
* Domain name represented as sequence of labels
|
||||
* Each label consists of a length octed followed
|
||||
|
|
@ -169,9 +259,9 @@ export interface MessageRecourceRecord {
|
|||
*/
|
||||
RDATA: Buffer;
|
||||
}
|
||||
export interface Message {
|
||||
header: MessageHeader;
|
||||
questions: MessageQuestion[];
|
||||
export interface IMessage {
|
||||
header: IMessageHeader;
|
||||
questions: IMessageQuestion[];
|
||||
answers: MessageRecourceRecord[];
|
||||
authorities: MessageRecourceRecord[];
|
||||
additionals: MessageRecourceRecord[];
|
||||
|
|
|
|||
99
lib/types.js
99
lib/types.js
|
|
@ -1,13 +1,5 @@
|
|||
"use strict";
|
||||
Object.defineProperty(exports, "__esModule", { value: true });
|
||||
// 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
|
||||
// *
|
||||
var ErrorCodes;
|
||||
(function (ErrorCodes) {
|
||||
/**
|
||||
|
|
@ -35,4 +27,95 @@ var ErrorCodes;
|
|||
*/
|
||||
ErrorCodes[ErrorCodes["Refused"] = 5] = "Refused";
|
||||
})(ErrorCodes = exports.ErrorCodes || (exports.ErrorCodes = {}));
|
||||
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 = {}));
|
||||
//# sourceMappingURL=types.js.map
|
||||
|
|
@ -1 +1 @@
|
|||
{"version":3,"file":"types.js","sourceRoot":"","sources":["../src/types.ts"],"names":[],"mappings":";;AACA,uBAAuB;AACvB,kDAAkD;AAClD,8CAA8C;AAC9C,kGAAkG;AAClG,0DAA0D;AAC1D,0DAA0D;AAC1D,wCAAwC;AACxC,WAAW;AACX,IAAY,UA8BX;AA9BD,WAAY,UAAU;IACnB;;OAEG;IACH,iDAAW,CAAA;IAEX;;OAEG;IACH,yDAAW,CAAA;IAEX;;OAEG;IACH,6DAAa,CAAA;IAEb;;OAEG;IACH,qDAAS,CAAA;IAET;;OAEG;IACH,+DAAc,CAAA;IAEd;;OAEG;IACH,iDAAO,CAAA;AACV,CAAC,EA9BW,UAAU,GAAV,kBAAU,KAAV,kBAAU,QA8BrB"}
|
||||
{"version":3,"file":"types.js","sourceRoot":"","sources":["../src/types.ts"],"names":[],"mappings":";;AAAA,IAAY,UA8BX;AA9BD,WAAY,UAAU;IACnB;;OAEG;IACH,iDAAW,CAAA;IAEX;;OAEG;IACH,yDAAW,CAAA;IAEX;;OAEG;IACH,6DAAa,CAAA;IAEb;;OAEG;IACH,qDAAS,CAAA;IAET;;OAEG;IACH,+DAAc,CAAA;IAEd;;OAEG;IACH,iDAAO,CAAA;AACV,CAAC,EA9BW,UAAU,GAAV,kBAAU,KAAV,kBAAU,QA8BrB;AAED,IAAY,UA8GX;AA9GD,WAAY,UAAU;IACnB;;OAEG;IACH,qCAAQ,CAAA;IAER;;OAEG;IACH,uCAAS,CAAA;IAET;;OAEG;IACH,uCAAS,CAAA;IAET;;OAEG;IACH,uCAAS,CAAA;IAET;;OAEG;IACH,6CAAY,CAAA;IAEZ;;OAEG;IACH,yCAAU,CAAA;IAEV;;OAEG;IACH,uCAAS,CAAA;IAET;;OAEG;IACH,uCAAS,CAAA;IAET;;OAEG;IACH,uCAAS,CAAA;IAET;;OAEG;IACH,4CAAW,CAAA;IAEX;;OAEG;IACH,0CAAU,CAAA;IAEV;;OAEG;IACH,0CAAU,CAAA;IAEV;;OAEG;IACH,8CAAY,CAAA;IAEZ;;OAEG;IACH,8CAAY,CAAA;IAEZ;;OAEG;IACH,wCAAS,CAAA;IAET;;OAEG;IACH,0CAAU,CAAA;IAEV;;OAEG;IACH,4CAAW,CAAA;IAEX;;OAEG;IACH,0CAAU,CAAA;IAEV;;OAEG;IACH,6CAAW,CAAA;IAEX;;OAEG;IACH,+CAAY,CAAA;IAEZ;;OAEG;IACH,+CAAY,CAAA;IAEZ;;OAEG;IACH,2CAAU,CAAA;AACb,CAAC,EA9GW,UAAU,GAAV,kBAAU,KAAV,kBAAU,QA8GrB"}
|
||||
10
package.json
10
package.json
|
|
@ -8,13 +8,19 @@
|
|||
"scripts": {
|
||||
"build": "tsc",
|
||||
"watch": "tsc --watch",
|
||||
"test": "nodemon lib/test.js"
|
||||
"test": "mocha src/test.ts --require ts-node/register",
|
||||
"testwatch": "mocha src/test.ts --require ts-node/register --watch --watch-extensions ts"
|
||||
},
|
||||
"devDependencies": {
|
||||
"@types/binary-parser": "^1.3.0",
|
||||
"@types/chai": "^4.1.3",
|
||||
"@types/mocha": "^5.2.0",
|
||||
"@types/node": "^10.0.8",
|
||||
"chai": "^4.1.2",
|
||||
"mocha": "^5.1.1",
|
||||
"nodemon": "^1.17.4",
|
||||
"typescript": "^2.8.3"
|
||||
"typescript": "^2.8.3",
|
||||
"ts-node": "^6.0.3"
|
||||
},
|
||||
"dependencies": {
|
||||
"binary-parser": "^1.3.2"
|
||||
|
|
|
|||
|
|
@ -2,15 +2,16 @@ 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") {
|
||||
constructor(type: "udp" | "tcp", onRequest: (request: Request) => any, 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}`)
|
||||
console.log(`UDP Server Listening on 53`)
|
||||
})
|
||||
|
||||
this.udp.on("message", (message, remote) => {
|
||||
|
|
@ -21,7 +22,7 @@ export default class Listener {
|
|||
onRequest(request);
|
||||
})
|
||||
|
||||
this.udp.bind(port, host)
|
||||
this.udp.bind(53, host)
|
||||
break;
|
||||
case "tcp":
|
||||
console.log("Not correct implemented")
|
||||
|
|
@ -53,7 +54,8 @@ export default class Listener {
|
|||
}
|
||||
});
|
||||
});
|
||||
this.tcp.listen(port, host);
|
||||
this.tcp.listen(53, host);
|
||||
console.log(`TCP Server Listening on 53`)
|
||||
break;
|
||||
default:
|
||||
throw new Error("Unknown socket type")
|
||||
|
|
|
|||
335
src/request.ts
335
src/request.ts
|
|
@ -1,121 +1,7 @@
|
|||
import { Parser } from "binary-parser"
|
||||
import { Message, MessageHeader, MessageQuestion, MessageRecourceRecord, ErrorCodes } from "./types"
|
||||
import { IMessage, IMessageHeader, IMessageQuestion, MessageRecourceRecord, ErrorCodes } from "./types"
|
||||
|
||||
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()
|
||||
const headerParser: Parser = new Parser()
|
||||
.endianess("big")
|
||||
.uint16("ID")
|
||||
.bit1("QR")
|
||||
|
|
@ -133,6 +19,14 @@ const headerParser = new Parser()
|
|||
.uint16("NSCOUNT")
|
||||
.uint16("ARCOUNT")
|
||||
|
||||
export function parseHeader(data: Buffer): IMessageHeader {
|
||||
try {
|
||||
return <any>headerParser.parse(data);
|
||||
} catch (e) {
|
||||
throw new Error("Header parsing failed" + e.message)
|
||||
}
|
||||
}
|
||||
|
||||
const labelParser = new Parser()
|
||||
.endianess("big")
|
||||
.uint8("dataLength")
|
||||
|
|
@ -156,16 +50,22 @@ const questionParser = new Parser()
|
|||
.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 function parseQuestions(count: number, packet: Buffer): IMessageQuestion[] {
|
||||
try {
|
||||
return <any>new Parser()
|
||||
.endianess("big")
|
||||
.array("questions", {
|
||||
type: questionParser,
|
||||
length: count
|
||||
}).parse(packet).questions;
|
||||
} catch (e) {
|
||||
throw new Error("Question parsing failed" + e.message)
|
||||
}
|
||||
}
|
||||
|
||||
export function SerializeName(name: string) {
|
||||
const MAX_LABEL_SIZE = 63;
|
||||
|
||||
export function serializeName(name: string) {
|
||||
let length = 0;
|
||||
let parts = name.split(".");
|
||||
parts.forEach(e => {
|
||||
|
|
@ -187,33 +87,32 @@ export function SerializeName(name: string) {
|
|||
return data;
|
||||
}
|
||||
|
||||
export class Request implements Message {
|
||||
private _header: MessageHeader;
|
||||
export class Request implements IMessage {
|
||||
private _header: Header;
|
||||
get header() {
|
||||
return Object.assign({}, this._header);
|
||||
}
|
||||
|
||||
private _questions: MessageQuestion[];
|
||||
private _questions: Question[];
|
||||
get questions() {
|
||||
return this._questions.map(e => e);
|
||||
return this._questions.map(e => Object.assign({}, e));
|
||||
}
|
||||
|
||||
answers: RecourceRecord[] = [];
|
||||
authorities: RecourceRecord[] = [];
|
||||
additionals: RecourceRecord[] = [];
|
||||
|
||||
constructor(packet: Buffer, private sendCallback: (packet: Buffer) => any) {
|
||||
constructor(packet: Buffer, private sendCallback: (packet: Buffer) => any, private max_size = 512) {
|
||||
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 = new Header(parseHeader(headerData));
|
||||
this._header.AD = 0;
|
||||
this._header.RCODE = ErrorCodes.NoError;
|
||||
this._header.RA = this._header.RD;
|
||||
|
||||
this._questions = parseQuestions(this._header.QDCOUNT, bodyData);
|
||||
this._questions = parseQuestions(this._header.QDCOUNT, bodyData).map(e => new Question(e));
|
||||
}
|
||||
|
||||
error(error: ErrorCodes) {
|
||||
|
|
@ -229,50 +128,53 @@ export class Request implements Message {
|
|||
this.sendCallback(this.serialize());
|
||||
}
|
||||
|
||||
serialize(truncate: boolean = false, rcode: 0 | 1 | 2 | 3 | 4 | 5 = 0) {
|
||||
serialize() {
|
||||
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;
|
||||
let questions = this._questions.map(e => e.serialize())
|
||||
let answers = this.answers.map(e => e.serialize())
|
||||
let authority = this.authorities.map(e => e.serialize())
|
||||
let additional = this.additionals.map(e => e.serialize())
|
||||
|
||||
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 length = 12;
|
||||
questions.forEach(e => length += e.length);
|
||||
answers.forEach(e => length += e.length)
|
||||
authority.forEach(e => length += e.length)
|
||||
additional.forEach(e => length += e.length)
|
||||
// let questionsByteLength = 0;
|
||||
// questions.forEach(e => questionsByteLength += e.length);
|
||||
|
||||
let questionsByteLength = 0;
|
||||
questions.forEach(e => questionsByteLength += e.length);
|
||||
// let answersByteLength = 0;
|
||||
// answers.forEach(e => answersByteLength += e.length)
|
||||
|
||||
let answersByteLength = 0;
|
||||
answers.forEach(e => answersByteLength += e.length)
|
||||
// let authorityByteLength = 0;
|
||||
// authority.forEach(e => authorityByteLength += e.length)
|
||||
|
||||
let authorityByteLength = 0;
|
||||
authority.forEach(e => authorityByteLength += e.length)
|
||||
// let additionalByteLength = 0;
|
||||
// additional.forEach(e => additionalByteLength += e.length)
|
||||
|
||||
let additionalByteLength = 0;
|
||||
additional.forEach(e => additionalByteLength += e.length)
|
||||
// let length = 12 + questionsByteLength + answersByteLength + authorityByteLength + additionalByteLength; //Header is always 12 byte large
|
||||
|
||||
let length = 12 + questionsByteLength + answersByteLength + authorityByteLength + additionalByteLength; //Header is always 12 byte large
|
||||
|
||||
if (truncate && length > 512) {
|
||||
if (length > this.max_size) {
|
||||
this._header.TC = 1;
|
||||
|
||||
//Buffer will ignore data that exeeds the max buffer length
|
||||
length = 512;
|
||||
//Will ignore data, that exceeds length
|
||||
length = this.max_size;
|
||||
}
|
||||
|
||||
let header = this.serializeHeader()
|
||||
let header = this._header.serialize();
|
||||
|
||||
let data = Buffer.alloc(length)
|
||||
let offset = 0;
|
||||
|
||||
let append = (buffer: Buffer) => {
|
||||
buffer.copy(data, offset, 0, buffer.length)
|
||||
offset += buffer.length;
|
||||
if (offset <= length) {
|
||||
buffer.copy(data, offset, 0, buffer.length)
|
||||
offset += buffer.length;
|
||||
}
|
||||
}
|
||||
|
||||
append(header)
|
||||
questions.forEach(append)
|
||||
answers.forEach(append)
|
||||
|
|
@ -280,57 +182,73 @@ export class Request implements Message {
|
|||
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);
|
||||
export class Header implements IMessageHeader {
|
||||
ID: number;
|
||||
QR: 0 | 1;
|
||||
OPCODE: number
|
||||
AA: 0 | 1;
|
||||
TC: 0 | 1;
|
||||
RD: 0 | 1;
|
||||
RA: 0 | 1;
|
||||
Z: 0 | 1;
|
||||
AD: 0 | 1;
|
||||
CD: 0 | 1;
|
||||
RCODE: ErrorCodes;
|
||||
QDCOUNT: number;
|
||||
ANCOUNT: number;
|
||||
NSCOUNT: number;
|
||||
ARCOUNT: number;
|
||||
|
||||
data.writeUInt16BE(header.QDCOUNT, 4)
|
||||
data.writeUInt16BE(header.ANCOUNT, 6)
|
||||
data.writeUInt16BE(header.NSCOUNT, 8)
|
||||
data.writeUInt16BE(header.ARCOUNT, 10)
|
||||
return data;
|
||||
constructor(header: IMessageHeader) {
|
||||
for (let k in header) {
|
||||
this[k] = header[k];
|
||||
}
|
||||
}
|
||||
|
||||
private serializeQuestion(question: MessageQuestion) {
|
||||
let qname = SerializeName(question.QNAME);
|
||||
serialize() {
|
||||
let data = Buffer.alloc(12);
|
||||
data.writeUInt16BE(this.ID, 0);
|
||||
var f = 0x0000;
|
||||
f = f | (this.QR << 15);
|
||||
f = f | (this.OPCODE << 11);
|
||||
f = f | (this.AA << 10);
|
||||
f = f | (this.TC << 9);
|
||||
f = f | (this.RD << 8);
|
||||
f = f | (this.RA << 7);
|
||||
f = f | (this.Z << 6);
|
||||
f = f | (this.AD << 5);
|
||||
f = f | (this.CD << 4);
|
||||
f = f | this.RCODE;
|
||||
data.writeUInt16BE(f, 2);
|
||||
data.writeUInt16BE(this.QDCOUNT, 4)
|
||||
data.writeUInt16BE(this.ANCOUNT, 6)
|
||||
data.writeUInt16BE(this.NSCOUNT, 8)
|
||||
data.writeUInt16BE(this.ARCOUNT, 10)
|
||||
return data;
|
||||
}
|
||||
}
|
||||
|
||||
export class Question implements IMessageQuestion {
|
||||
QNAME: string;
|
||||
QTYPE: number;
|
||||
QCLASS: number;
|
||||
|
||||
constructor(question: IMessageQuestion) {
|
||||
for (let k in question) {
|
||||
this[k] = question[k]
|
||||
}
|
||||
}
|
||||
|
||||
serialize() {
|
||||
let qname = serializeName(this.QNAME);
|
||||
let data = Buffer.alloc(qname.length + 4);
|
||||
qname.copy(data, 0, 0, qname.length);
|
||||
let offset = qname.length;
|
||||
data.writeUInt16BE(question.QTYPE, offset);
|
||||
data.writeUInt16BE(this.QTYPE, offset);
|
||||
offset += 2;
|
||||
data.writeUInt16BE(question.QCLASS, offset);
|
||||
return data;
|
||||
}
|
||||
|
||||
private serializeResourceRecord(record: MessageRecourceRecord) {
|
||||
// TODO: Implement compression
|
||||
let name = 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)
|
||||
data.writeUInt16BE(this.QCLASS, offset);
|
||||
return data;
|
||||
}
|
||||
}
|
||||
|
|
@ -365,6 +283,7 @@ export class RecourceRecord implements MessageRecourceRecord {
|
|||
private _TTL: number;
|
||||
set TTL(value) {
|
||||
if (value < 0 || value > 4294967295) throw new TypeError("TTL Range: 0 - 4.294.967.295")
|
||||
this._TTL = value;
|
||||
}
|
||||
|
||||
get TTL() {
|
||||
|
|
@ -376,4 +295,22 @@ export class RecourceRecord implements MessageRecourceRecord {
|
|||
get RDLENGTH() {
|
||||
return this.RDATA.length;
|
||||
}
|
||||
|
||||
public serialize() {
|
||||
// TODO: Implement compression
|
||||
let name = serializeName(this.NAME);
|
||||
let data = Buffer.alloc(name.length + 10 + this.RDLENGTH) // For TYPE, CLASS, TTL, RLENGTH
|
||||
name.copy(data, 0, 0, name.length);
|
||||
let offset = name.length;
|
||||
data.writeUInt16BE(this.TYPE, offset)
|
||||
offset += 2
|
||||
data.writeUInt16BE(this.CLASS, offset)
|
||||
offset += 2
|
||||
data.writeUInt32BE(this._TTL, offset)
|
||||
offset += 4
|
||||
data.writeUInt16BE(this.RDLENGTH, offset)
|
||||
offset += 2
|
||||
this.RDATA.copy(data, offset, 0, this.RDLENGTH)
|
||||
return data;
|
||||
}
|
||||
}
|
||||
364
src/test.ts
364
src/test.ts
|
|
@ -1,5 +1,359 @@
|
|||
// 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));
|
||||
import { assert, expect } from "chai";
|
||||
|
||||
import { parseHeader, Header, parseQuestions, Question, RecourceRecord, Request } from "./request"
|
||||
import { IMessageHeader, IMessageQuestion, QueryTypes } from "./types";
|
||||
|
||||
function fromHex(data: string) {
|
||||
return Buffer.from(data.replace(/\s/g, ""), "hex");
|
||||
}
|
||||
|
||||
describe("parser", function () {
|
||||
describe("header", function () {
|
||||
describe("header parser", function () {
|
||||
let should_templ: IMessageHeader = {
|
||||
ID: 0,
|
||||
QR: 0,
|
||||
OPCODE: 0,
|
||||
AA: 0,
|
||||
TC: 0,
|
||||
RD: 0,
|
||||
RA: 0,
|
||||
Z: 0,
|
||||
AD: 0,
|
||||
CD: 0,
|
||||
RCODE: 0,
|
||||
QDCOUNT: 0,
|
||||
ANCOUNT: 0,
|
||||
ARCOUNT: 0,
|
||||
NSCOUNT: 0
|
||||
}
|
||||
|
||||
let tests: { name: string, data: string, fields: Partial<IMessageHeader> }[] = [
|
||||
{
|
||||
name: "Testing ID field",
|
||||
data: "0001 0000 0000 0000 0000 0000",
|
||||
fields: {
|
||||
ID: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing ID field with max value",
|
||||
data: "FFFF 0000 0000 0000 0000 0000",
|
||||
fields: {
|
||||
ID: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing QR field",
|
||||
data: "0000 8000 0000 0000 0000 0000",
|
||||
fields: {
|
||||
QR: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing OPCODE field value 2",
|
||||
data: "0000 1000 0000 0000 0000 0000",
|
||||
fields: {
|
||||
OPCODE: 2
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing OPCODE field value 1",
|
||||
data: "0000 0800 0000 0000 0000 0000",
|
||||
fields: {
|
||||
OPCODE: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing AA field",
|
||||
data: "0000 0400 0000 0000 0000 0000",
|
||||
fields: {
|
||||
AA: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing TC field",
|
||||
data: "0000 0200 0000 0000 0000 0000",
|
||||
fields: {
|
||||
TC: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing RD field",
|
||||
data: "0000 0100 0000 0000 0000 0000",
|
||||
fields: {
|
||||
RD: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing RCODE field",
|
||||
data: "0000 0002 0000 0000 0000 0000",
|
||||
fields: {
|
||||
RCODE: 2
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing QDCOUNT field max value",
|
||||
data: "0000 0000 FFFF 0000 0000 0000",
|
||||
fields: {
|
||||
QDCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing ANCOUNT field max value",
|
||||
data: "0000 0000 0000 FFFF 0000 0000",
|
||||
fields: {
|
||||
ANCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing NSCOUNT field max value",
|
||||
data: "0000 0000 0000 0000 FFFF 0000",
|
||||
fields: {
|
||||
NSCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing ARCOUNT field max value",
|
||||
data: "0000 0000 0000 0000 0000 FFFF",
|
||||
fields: {
|
||||
ARCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Testing all Flags and Values max",
|
||||
data: "FFFF FFFF FFFF FFFF FFFF FFFF",
|
||||
fields: {
|
||||
ID: 65535,
|
||||
QR: 1,
|
||||
OPCODE: 15,
|
||||
AA: 1,
|
||||
TC: 1,
|
||||
RD: 1,
|
||||
RA: 1,
|
||||
Z: 1,
|
||||
AD: 1,
|
||||
CD: 1,
|
||||
RCODE: 15,
|
||||
QDCOUNT: 65535,
|
||||
ANCOUNT: 65535,
|
||||
NSCOUNT: 65535,
|
||||
ARCOUNT: 65535
|
||||
}
|
||||
}
|
||||
]
|
||||
tests.forEach(function (e) {
|
||||
it(e.name, function () {
|
||||
let testdata = fromHex(e.data)
|
||||
let should: IMessageHeader = Object.assign({}, should_templ, e.fields) // Build in "clone" function
|
||||
let header = parseHeader(testdata);
|
||||
assert.hasAllKeys(header, Object.keys(should), "Parsed header is missing some fields")
|
||||
assert.deepEqual(header, should, "Parsed header has not expected values!")
|
||||
})
|
||||
})
|
||||
})
|
||||
|
||||
describe("header serializer", function () {
|
||||
let empty_header: IMessageHeader = {
|
||||
ID: 0,
|
||||
QR: 0,
|
||||
OPCODE: 0,
|
||||
AA: 0,
|
||||
TC: 0,
|
||||
RD: 0,
|
||||
RA: 0,
|
||||
Z: 0,
|
||||
AD: 0,
|
||||
CD: 0,
|
||||
RCODE: 0,
|
||||
QDCOUNT: 0,
|
||||
ANCOUNT: 0,
|
||||
ARCOUNT: 0,
|
||||
NSCOUNT: 0
|
||||
}
|
||||
let tests: { name: string, result: string, values: Partial<IMessageHeader> }[] = [
|
||||
{
|
||||
name: "Fill header with 0s",
|
||||
result: "0000 0000 0000 0000 0000 0000",
|
||||
values: {}
|
||||
},
|
||||
{
|
||||
name: "Set header id to 5",
|
||||
result: "0005 0000 0000 0000 0000 0000",
|
||||
values: {
|
||||
ID: 5
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set QR",
|
||||
result: "0000 8000 0000 0000 0000 0000",
|
||||
values: {
|
||||
QR: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set OPCODE",
|
||||
result: "0000 7800 0000 0000 0000 0000",
|
||||
values: {
|
||||
OPCODE: 15
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set AA",
|
||||
result: "0000 0400 0000 0000 0000 0000",
|
||||
values: {
|
||||
AA: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set TC",
|
||||
result: "0000 0200 0000 0000 0000 0000",
|
||||
values: {
|
||||
TC: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set RD",
|
||||
result: "0000 0100 0000 0000 0000 0000",
|
||||
values: {
|
||||
RD: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set RA",
|
||||
result: "0000 0080 0000 0000 0000 0000",
|
||||
values: {
|
||||
RA: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set Z",
|
||||
result: "0000 0040 0000 0000 0000 0000",
|
||||
values: {
|
||||
Z: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set AD",
|
||||
result: "0000 0020 0000 0000 0000 0000",
|
||||
values: {
|
||||
AD: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set CD",
|
||||
result: "0000 0010 0000 0000 0000 0000",
|
||||
values: {
|
||||
CD: 1
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set RCODE",
|
||||
result: "0000 000F 0000 0000 0000 0000",
|
||||
values: {
|
||||
RCODE: 15
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set QDCOUNT",
|
||||
result: "0000 0000 FFFF 0000 0000 0000",
|
||||
values: {
|
||||
QDCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set ANCOUNT",
|
||||
result: "0000 0000 0000 FFFF 0000 0000",
|
||||
values: {
|
||||
ANCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set NSCOUNT",
|
||||
result: "0000 0000 0000 0000 FFFF 0000",
|
||||
values: {
|
||||
NSCOUNT: 65535
|
||||
}
|
||||
},
|
||||
{
|
||||
name: "Set ARCOUNT",
|
||||
result: "0000 0000 0000 0000 0000 FFFF",
|
||||
values: {
|
||||
ARCOUNT: 65535
|
||||
}
|
||||
},
|
||||
]
|
||||
|
||||
tests.forEach(function (e) {
|
||||
it(e.name, function () {
|
||||
let header = Object.assign({}, empty_header, e.values)
|
||||
let serialized = new Header(header).serialize();
|
||||
assert.equal(serialized.toString("hex"), e.result.replace(/\s/g, "").toLowerCase(), "Header serialization failed");
|
||||
})
|
||||
})
|
||||
})
|
||||
})
|
||||
|
||||
describe("question", function () {
|
||||
let questionData = fromHex("0474 6573 7407 6578 616d 706c 6503 636f 6d00 0001 0001")
|
||||
let questionObj = {
|
||||
QNAME: "test.example.com",
|
||||
QTYPE: QueryTypes.A,
|
||||
QCLASS: 1
|
||||
}
|
||||
it("check question parser with one question", function () {
|
||||
|
||||
let res = parseQuestions(1, questionData)
|
||||
let should: IMessageQuestion[] = [questionObj]
|
||||
|
||||
assert.deepEqual(res, should, "Question parser does not parse input correctly")
|
||||
})
|
||||
|
||||
it("check question serialization", function () {
|
||||
let res = new Question(questionObj).serialize()
|
||||
assert.equal(res.toString("hex"), questionData.toString("hex"), "Query serializer does not serialite correctly");
|
||||
})
|
||||
})
|
||||
|
||||
it("recource record serialization", function () {
|
||||
let should = "07 6578616D706C65 03 636f6D 00 0001 0001 00000640 0004 0A000001"
|
||||
let rr = new RecourceRecord()
|
||||
rr.CLASS = 1
|
||||
rr.NAME = "example.com"
|
||||
rr.TTL = 1600
|
||||
rr.TYPE = 1
|
||||
rr.RDATA = fromHex("0A 00 00 01")
|
||||
let res = rr.serialize().toString("hex")
|
||||
assert.equal(res, should.replace(/\s/g, "").toLowerCase(), "Serialization not working properly")
|
||||
})
|
||||
|
||||
it("full response serialization", function () {
|
||||
let reqData = fromHex("E835 0100 0001 0000 0000 0000 07 6578616D706c65 03636F6D 00 0001 0001");
|
||||
let should = "E835 8580 0001000100000000 076578616D706C6503636F6D0000010001 07 6578616D706C65 03 636F6D 00 0001 0001 0000 0640 0004 0A000001"
|
||||
let request = new Request(reqData, () => null)
|
||||
let rr = new RecourceRecord()
|
||||
rr.CLASS = 1
|
||||
rr.NAME = "example.com"
|
||||
rr.TTL = 1600
|
||||
rr.TYPE = 1
|
||||
rr.RDATA = fromHex("0A 00 00 01")
|
||||
request.answers.push(rr)
|
||||
let data = request.serialize()
|
||||
assert.equal(data.toString("hex"), should.replace(/\s/g, "").toLowerCase(), "Whole packet serialization failed")
|
||||
})
|
||||
|
||||
// it("full response serialization benchmark", function () {
|
||||
// let reqData = fromHex("E835 0100 0001 0000 0000 0000 07 6578616D706c65 03636F6D 00 0001 0001");
|
||||
// for (let i = 0; i < 100; i++) {
|
||||
// let request = new Request(reqData, () => null)
|
||||
// let rr = new RecourceRecord()
|
||||
// rr.CLASS = 1
|
||||
// rr.NAME = "example.com"
|
||||
// rr.TTL = 1600
|
||||
// rr.TYPE = 1
|
||||
// rr.RDATA = fromHex("0A 00 00 01")
|
||||
// request.answers.push(rr)
|
||||
// request.serialize()
|
||||
// }
|
||||
// })
|
||||
})
|
||||
133
src/types.ts
133
src/types.ts
|
|
@ -1,12 +1,3 @@
|
|||
|
||||
// 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
|
||||
// *
|
||||
export enum ErrorCodes {
|
||||
/**
|
||||
* No error
|
||||
|
|
@ -39,7 +30,119 @@ export enum ErrorCodes {
|
|||
Refused
|
||||
}
|
||||
|
||||
export interface MessageHeader {
|
||||
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
|
||||
}
|
||||
|
||||
export interface IMessageHeader {
|
||||
/**
|
||||
* A 16 bit identifier assigned by the program that
|
||||
* generates any kind of query. This identifier is copied
|
||||
|
|
@ -93,7 +196,7 @@ export interface MessageHeader {
|
|||
/**
|
||||
* Reserved for future usage, must be 0 in all queries
|
||||
*/
|
||||
Z: 0;
|
||||
Z: 0 | 1;
|
||||
|
||||
AD: 0 | 1;
|
||||
|
||||
|
|
@ -136,7 +239,7 @@ export interface MessageHeader {
|
|||
*/
|
||||
ARCOUNT: number;
|
||||
}
|
||||
export interface MessageQuestion {
|
||||
export interface IMessageQuestion {
|
||||
/**
|
||||
* Domain name represented as sequence of labels
|
||||
* Each label consists of a length octed followed
|
||||
|
|
@ -203,9 +306,9 @@ export interface MessageRecourceRecord {
|
|||
*/
|
||||
RDATA: Buffer;
|
||||
}
|
||||
export interface Message {
|
||||
header: MessageHeader;
|
||||
questions: MessageQuestion[];
|
||||
export interface IMessage {
|
||||
header: IMessageHeader;
|
||||
questions: IMessageQuestion[];
|
||||
answers: MessageRecourceRecord[];
|
||||
authorities: MessageRecourceRecord[];
|
||||
additionals: MessageRecourceRecord[];
|
||||
|
|
|
|||
Loading…
Reference in New Issue