mirror of
https://github.com/gamedig/node-gamedig.git
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164 lines
6.2 KiB
JavaScript
164 lines
6.2 KiB
JavaScript
const Core = require('./core');
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class Battlefield extends Core {
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constructor() {
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super();
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this.encoding = 'latin1';
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}
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async run(state) {
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await this.withTcp(async socket => {
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{
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const data = await this.query(socket, ['serverInfo']);
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state.name = data.shift();
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state.raw.numplayers = parseInt(data.shift());
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state.maxplayers = parseInt(data.shift());
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state.raw.gametype = data.shift();
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state.map = data.shift();
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state.raw.roundsplayed = parseInt(data.shift());
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state.raw.roundstotal = parseInt(data.shift());
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const teamCount = data.shift();
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state.raw.teams = [];
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for (let i = 0; i < teamCount; i++) {
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const tickets = parseFloat(data.shift());
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state.raw.teams.push({
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tickets: tickets
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});
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}
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state.raw.targetscore = parseInt(data.shift());
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state.raw.status = data.shift();
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// Seems like the fields end at random places beyond this point
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// depending on the server version
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if (data.length) state.raw.ranked = (data.shift() === 'true');
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if (data.length) state.raw.punkbuster = (data.shift() === 'true');
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if (data.length) state.password = (data.shift() === 'true');
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if (data.length) state.raw.uptime = parseInt(data.shift());
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if (data.length) state.raw.roundtime = parseInt(data.shift());
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const isBadCompany2 = data[0] === 'BC2';
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if (isBadCompany2) {
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if (data.length) data.shift();
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if (data.length) data.shift();
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}
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if (data.length) {
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state.raw.ip = data.shift();
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const split = state.raw.ip.split(':');
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state.gameHost = split[0];
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state.gamePort = split[1];
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} else {
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// best guess if the server doesn't tell us what the server port is
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// these are just the default game ports for different default query ports
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if (this.options.port === 48888) state.gamePort = 7673;
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if (this.options.port === 22000) state.gamePort = 25200;
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}
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if (data.length) state.raw.punkbusterversion = data.shift();
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if (data.length) state.raw.joinqueue = (data.shift() === 'true');
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if (data.length) state.raw.region = data.shift();
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if (data.length) state.raw.pingsite = data.shift();
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if (data.length) state.raw.country = data.shift();
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if (data.length) state.raw.quickmatch = (data.shift() === 'true');
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}
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{
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const data = await this.query(socket, ['version']);
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data.shift();
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state.raw.version = data.shift();
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}
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{
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const data = await this.query(socket, ['listPlayers', 'all']);
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const fieldCount = parseInt(data.shift());
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const fields = [];
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for (let i = 0; i < fieldCount; i++) {
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fields.push(data.shift());
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}
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const numplayers = data.shift();
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for (let i = 0; i < numplayers; i++) {
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const player = {};
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for (let key of fields) {
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let value = data.shift();
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if (key === 'teamId') key = 'team';
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else if (key === 'squadId') key = 'squad';
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if (
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key === 'kills'
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|| key === 'deaths'
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|| key === 'score'
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|| key === 'rank'
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|| key === 'team'
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|| key === 'squad'
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|| key === 'ping'
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|| key === 'type'
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) {
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value = parseInt(value);
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}
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player[key] = value;
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}
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state.players.push(player);
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}
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}
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});
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}
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async query(socket, params) {
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const outPacket = this.buildPacket(params);
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return await this.tcpSend(socket, outPacket, (data) => {
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const decoded = this.decodePacket(data);
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if(decoded) {
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this.debugLog(decoded);
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if(decoded.shift() !== 'OK') throw new Error('Missing OK');
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return decoded;
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}
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});
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}
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buildPacket(params) {
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const paramBuffers = [];
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for (const param of params) {
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paramBuffers.push(Buffer.from(param,'utf8'));
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}
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let totalLength = 12;
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for (const paramBuffer of paramBuffers) {
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totalLength += paramBuffer.length+1+4;
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}
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const b = Buffer.alloc(totalLength);
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b.writeUInt32LE(0,0);
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b.writeUInt32LE(totalLength,4);
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b.writeUInt32LE(params.length,8);
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let offset = 12;
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for (const paramBuffer of paramBuffers) {
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b.writeUInt32LE(paramBuffer.length, offset); offset += 4;
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paramBuffer.copy(b, offset); offset += paramBuffer.length;
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b.writeUInt8(0, offset); offset += 1;
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}
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return b;
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}
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decodePacket(buffer) {
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if(buffer.length < 8) return false;
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const reader = this.reader(buffer);
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const header = reader.uint(4);
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const totalLength = reader.uint(4);
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if(buffer.length < totalLength) return false;
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this.debugLog("Expected " + totalLength + " bytes, have " + buffer.length);
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const paramCount = reader.uint(4);
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const params = [];
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for(let i = 0; i < paramCount; i++) {
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const len = reader.uint(4);
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params.push(reader.string({length:len}));
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const strNull = reader.uint(1);
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}
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return params;
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}
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}
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module.exports = Battlefield; |