node-gamedig/protocols/tribes1master.js

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const Core = require('./core');
/** Unsupported -- use at your own risk!! */
class Tribes1Master extends Core {
constructor() {
super();
this.encoding = 'latin1';
}
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async run(state) {
const queryBuffer = Buffer.from([
0x10, // standard header
0x03, // dump servers
0xff, // ask for all packets
0x00, // junk
0x01, 0x02, // challenge
]);
let parts = new Map();
let total = 0;
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const full = await this.udpSend(queryBuffer,(buffer) => {
const reader = this.reader(buffer);
const header = reader.uint(2);
if (header !== 0x0610) {
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this.debugLog('Header response does not match: ' + header.toString(16));
return;
}
const num = reader.uint(1);
const t = reader.uint(1);
if (t <= 0 || (total > 0 && t !== total)) {
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throw new Error('Conflicting packet total: ' + t);
}
total = t;
if (num < 1 || num > total) {
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this.debugLog('Invalid packet number: ' + num + ' ' + total);
return;
}
if (parts.has(num)) {
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this.debugLog('Duplicate part: ' + num);
return;
}
reader.skip(2); // challenge (0x0201)
reader.skip(2); // always 0x6600
parts.set(num, reader.rest());
if (parts.size === total) {
const ordered = [];
for (let i = 1; i <= total; i++) ordered.push(parts.get(i));
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return Buffer.concat(ordered);
}
});
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const fullReader = this.reader(full);
state.raw.name = this.readString(fullReader);
state.raw.motd = this.readString(fullReader);
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state.raw.servers = [];
while (!fullReader.done()) {
fullReader.skip(1); // junk ?
const count = fullReader.uint(1);
for (let i = 0; i < count; i++) {
const six = fullReader.uint(1);
if (six !== 6) {
throw new Error('Expecting 6');
}
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const ip = fullReader.uint(4);
const port = fullReader.uint(2);
const ipStr = (ip & 255) + '.' + (ip >> 8 & 255) + '.' + (ip >> 16 & 255) + '.' + (ip >>> 24);
state.raw.servers.push(ipStr+":"+port);
}
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}
}
readString(reader) {
const length = reader.uint(1);
if(!length) return '';
return reader.string({length:length});
}
}
module.exports = Tribes1Master;