mirror of
https://github.com/gamedig/node-gamedig.git
synced 2024-09-07 11:31:28 +02:00
189 lines
4.9 KiB
JavaScript
189 lines
4.9 KiB
JavaScript
var async = require('async'),
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Bzip2 = require('compressjs').Bzip2;
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module.exports = require('./core').extend({
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init: function() {
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this._super();
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this.goldsrc = false;
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this.options.port = 27015;
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},
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run: function() {
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var self = this;
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var challenge;
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var state = {};
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async.series([
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function(c) {
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self.sendPacket(
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0x54,false,new Buffer('Source Engine Query\0'),
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self.goldsrc ? 0x6D : 0x49,
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function(b) {
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var reader = self.reader(b);
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if(self.goldsrc) state.address = reader.string();
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else state.protocol = reader.uint(1);
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state.name = reader.string();
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state.map = reader.string();
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state.folder = reader.string();
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state.game = reader.string();
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state.steamappid = reader.uint(2);
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state.numplayers = reader.uint(1);
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state.maxplayers = reader.uint(1);
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if(self.goldsrc) state.protocol = reader.uint(1);
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else state.numbots = reader.uint(1);
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state.listentype = String.fromCharCode(reader.uint(1));
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state.environment = String.fromCharCode(reader.uint(1));
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state.passworded = reader.uint(1);
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if(self.goldsrc) {
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state.ismod = reader.uint(1);
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if(state.ismod) {
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state.modlink = reader.string();
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state.moddownload = reader.string();
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reader.skip(1);
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state.modversion = reader.uint(4);
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state.modsize = reader.uint(4);
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state.modtype = reader.uint(1);
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state.moddll = reader.uint(1);
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}
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}
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state.secure = reader.uint(1);
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if(self.goldsrc) {
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state.numbots = reader.uint(1);
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} else {
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if(state.folder == 'ship') {
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state.shipmode = reader.uint(1);
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state.shipwitnesses = reader.uint(1);
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state.shipduration = reader.uint(1);
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}
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state.version = reader.string();
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var extraFlag = reader.uint(1);
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if(extraFlag & 0x80) state.port = reader.uint(2);
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if(extraFlag & 0x10) state.steamid = reader.uint(8);
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if(extraFlag & 0x40) {
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state.sourcetvport = reader.uint(2);
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state.sourcetvname = reader.string();
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}
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if(extraFlag & 0x20) state.tags = reader.string();
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if(extraFlag & 0x01) state.gameid = reader.uint(8);
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}
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c();
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}
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);
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},
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function(c) {
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self.sendPacket(0x55,0xffffffff,false,0x41,function(b) {
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var reader = self.reader(b);
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challenge = reader.uint(4);
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c();
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});
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},
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function(c) {
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self.sendPacket(0x55,challenge,false,0x44,function(b) {
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var reader = self.reader(b);
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var num = reader.uint(1);
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state.players = [];
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for(var i = 0; i < num; i++) {
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reader.skip(1);
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var name = reader.string();
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var score = reader.uint(4);
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var time = reader.float();
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state.players.push({
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name:name, score:score, time:time
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});
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}
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c();
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});
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},
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function(c) {
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self.sendPacket(0x56,challenge,false,0x45,function(b) {
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var reader = self.reader(b);
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var num = reader.uint(2);
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state.rules = [];
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for(var i = 0; i < num; i++) {
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var key = reader.string();
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var value = reader.string();
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state.rules[key] = value;
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}
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c();
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});
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},
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function(c) {
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self.finish(state);
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}
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]);
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},
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sendPacket: function(type,challenge,payload,expect,callback) {
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var self = this;
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var challengeLength = challenge === false ? 0 : 4;
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var payloadLength = payload ? payload.length : 0;
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var b = new Buffer(5 + challengeLength + payloadLength);
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b.writeInt32LE(-1, 0);
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b.writeUInt8(type, 4);
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if(challengeLength) b.writeUInt32LE(challenge, 5);
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if(payloadLength) payload.copy(b, 5+challengeLength);
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function received(payload) {
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var type = payload.readUInt8(0);
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if(type != expect) return;
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callback(payload.slice(1));
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return true;
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}
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var numPackets = 0;
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var packets = [];
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var bzip = false;
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this.udpSend(b,function(buffer) {
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var header = buffer.readInt32LE(0);
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if(header == -1) {
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// full package
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return received(buffer.slice(4));
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}
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if(header == -2) {
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// partial package
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var uid = buffer.readUInt32LE(4);
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if(!self.goldsrc && uid & 0x80000000) bzip = true;
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var id,payload;
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if(self.goldsrc) {
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id = buffer.readUInt8(8);
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numPackets = id & 0x0f;
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id = id & 0xf0 >> 4;
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payload = buffer.slice(9);
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} else {
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numPackets = buffer.readUInt8(8);
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id = buffer.readUInt8(9);
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if(id == 0 && bzip) payload = buffer.slice(20);
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else payload = buffer.slice(12);
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}
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packets[id] = payload;
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if(!numPackets || Object.keys(packets).length != numPackets) return;
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// assemble the parts
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var list = [];
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for(var i = 0; i < numPackets; i++) {
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if(!(i in packets)) {
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self.error('Missing packet #'+i);
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return true;
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}
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list.push(packets[i]);
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}
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var assembled = Buffer.concat(list);
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var payload = assembled.slice(4);
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if(bzip) payload = Bzip2.uncompressFile(payload);
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return received(payload);
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}
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});
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}
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});
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