From e5c55b402b19a8177c1d23ae474b0c5c622d207b Mon Sep 17 00:00:00 2001 From: Fabian Stamm Date: Sun, 13 May 2018 22:27:16 +0200 Subject: [PATCH] Exporting SerializeName for usage in RR data --- lib/request.d.ts | 2 +- lib/request.js | 47 +++++++++++++++++++++++---------------------- lib/request.js.map | 2 +- package.json | 2 +- src/request.ts | 48 +++++++++++++++++++++++----------------------- 5 files changed, 51 insertions(+), 50 deletions(-) diff --git a/lib/request.d.ts b/lib/request.d.ts index 74f118f..47ec901 100644 --- a/lib/request.d.ts +++ b/lib/request.d.ts @@ -90,6 +90,7 @@ export declare enum QueryTypes { */ ANY = 255, } +export declare function SerializeName(name: string): Buffer; export declare class Request implements Message { private sendCallback; _header: MessageHeader; @@ -107,7 +108,6 @@ export declare class Request implements Message { private serializeHeader(); private serializeQuestion(question); private serializeResourceRecord(record); - private serializeName(name); } export declare class RecourceRecord implements MessageRecourceRecord { NAME: string; diff --git a/lib/request.js b/lib/request.js index d2dda92..ebd07f3 100644 --- a/lib/request.js +++ b/lib/request.js @@ -140,6 +140,28 @@ function parseQuestions(count, packet) { length: count }).parse(packet).questions; } +function 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 => { + data.writeUInt8(e.length, offset); + offset++; + data.write(e, offset, e.length); + offset += e.length; + }); + data.writeUInt8(0, offset); + return data; +} +exports.SerializeName = SerializeName; class Request { constructor(packet, sendCallback) { this.sendCallback = sendCallback; @@ -232,7 +254,7 @@ class Request { return data; } serializeQuestion(question) { - let qname = this.serializeName(question.QNAME); + let qname = SerializeName(question.QNAME); let data = Buffer.alloc(qname.length + 4); qname.copy(data, 0, 0, qname.length); let offset = qname.length; @@ -243,7 +265,7 @@ class Request { } serializeResourceRecord(record) { // TODO: Implement compression - let name = this.serializeName(record.NAME); + 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; @@ -258,27 +280,6 @@ class Request { 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 => { - data.writeUInt8(e.length, offset); - offset++; - data.write(e, offset, e.length); - offset += e.length; - }); - data.writeUInt8(0, offset); - return data; - } } exports.Request = Request; class RecourceRecord { diff --git a/lib/request.js.map b/lib/request.js.map index 319bed1..c202133 100644 --- a/lib/request.js.map +++ b/lib/request.js.map @@ -1 +1 @@ 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\ No newline at end of file diff --git a/package.json b/package.json index b3e3e1e..22ba47b 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "nodename-core", - "version": "0.1.6", + "version": "0.1.7", "main": "lib/listener.js", "types": "lib/listener.d.ts", "author": "Fabian Stamm ", diff --git a/src/request.ts b/src/request.ts index 6339b70..c60319a 100644 --- a/src/request.ts +++ b/src/request.ts @@ -165,6 +165,28 @@ function parseQuestions(count: number, packet: Buffer): MessageQuestion[] { }).parse(packet).questions; } +export function 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 => { + data.writeUInt8(e.length, offset) + offset++ + data.write(e, offset, e.length) + offset += e.length + }) + data.writeUInt8(0, offset); + return data; +} + export class Request implements Message { _header: MessageHeader; get header() { @@ -280,7 +302,7 @@ export class Request implements Message { } private serializeQuestion(question: MessageQuestion) { - let qname = this.serializeName(question.QNAME); + let qname = SerializeName(question.QNAME); let data = Buffer.alloc(qname.length + 4); qname.copy(data, 0, 0, qname.length); let offset = qname.length; @@ -292,7 +314,7 @@ export class Request implements Message { private serializeResourceRecord(record: MessageRecourceRecord) { // TODO: Implement compression - let name = this.serializeName(record.NAME); + 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; @@ -307,28 +329,6 @@ export class Request implements Message { 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 => { - data.writeUInt8(e.length, offset) - offset++ - data.write(e, offset, e.length) - offset += e.length - }) - data.writeUInt8(0, offset); - return data; - } } export class RecourceRecord implements MessageRecourceRecord {