mirror of
https://github.com/gamedig/node-gamedig.git
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156 lines
6.0 KiB
JavaScript
156 lines
6.0 KiB
JavaScript
const Core = require('./core');
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class Doom3 extends Core {
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constructor() {
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super();
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this.encoding = 'latin1';
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this.isEtqw = false;
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this.hasSpaceBeforeClanTag = false;
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this.hasClanTag = false;
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this.hasTypeFlag = false;
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}
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async run(state) {
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const body = await this.udpSend('\xff\xffgetInfo\x00PiNGPoNg\x00', packet => {
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const reader = this.reader(packet);
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const header = reader.uint(2);
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if(header !== 0xffff) return;
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const header2 = reader.string();
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if(header2 !== 'infoResponse') return;
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const challengePart1 = reader.string({length:4});
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if (challengePart1 !== "PiNG") return;
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// some doom3 implementations only return the first 4 bytes of the challenge
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const challengePart2 = reader.string({length:4});
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if (challengePart2 !== 'PoNg') reader.skip(-4);
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return reader.rest();
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});
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let reader = this.reader(body);
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const protoVersion = reader.uint(4);
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state.raw.protocolVersion = (protoVersion>>16)+'.'+(protoVersion&0xffff);
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// some doom implementations send us a packet size here, some don't (etqw does this)
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// we can tell if this is a packet size, because the third and fourth byte will be 0 (no packets are that massive)
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reader.skip(2);
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const packetContainsSize = (reader.uint(2) === 0);
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reader.skip(-4);
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if (packetContainsSize) {
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const size = reader.uint(4);
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this.debugLog("Received packet size: " + size);
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}
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while(!reader.done()) {
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const key = reader.string();
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let value = this.stripColors(reader.string());
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if(key === 'si_map') {
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value = value.replace('maps/','');
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value = value.replace('.entities','');
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}
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if(!key) break;
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state.raw[key] = value;
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this.debugLog(key + "=" + value);
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}
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const isEtqw = state.raw.gamename && state.raw.gamename.toLowerCase().includes('etqw');
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const rest = reader.rest();
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let playerResult = this.attemptPlayerParse(rest, isEtqw, false, false, false);
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if (!playerResult) playerResult = this.attemptPlayerParse(rest, isEtqw, true, false, false);
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if (!playerResult) playerResult = this.attemptPlayerParse(rest, isEtqw, true, true, true);
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if (!playerResult) {
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throw new Error("Unable to find a suitable parse strategy for player list");
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}
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let players;
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[players,reader] = playerResult;
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for (const player of players) {
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if(!player.ping || player.typeflag)
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state.bots.push(player);
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else
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state.players.push(player);
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}
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state.raw.osmask = reader.uint(4);
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if (isEtqw) {
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state.raw.ranked = reader.uint(1);
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state.raw.timeleft = reader.uint(4);
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state.raw.gamestate = reader.uint(1);
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state.raw.servertype = reader.uint(1);
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// 0 = regular, 1 = tv
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if(state.raw.servertype === 0) {
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state.raw.interestedClients = reader.uint(1);
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} else if(state.raw.servertype === 1) {
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state.raw.connectedClients = reader.uint(4);
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state.raw.maxClients = reader.uint(4);
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}
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}
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if (state.raw.si_name) state.name = state.raw.si_name;
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if (state.raw.si_map) state.map = state.raw.si_map;
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if (state.raw.si_maxplayers) state.maxplayers = parseInt(state.raw.si_maxplayers);
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if (state.raw.si_maxPlayers) state.maxplayers = parseInt(state.raw.si_maxplayers);
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if (state.raw.si_usepass === '1') state.password = true;
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if (state.raw.si_needPass === '1') state.password = true;
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if (this.options.port === 27733) state.gamePort = 3074; // etqw has a different query and game port
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}
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attemptPlayerParse(rest, isEtqw, hasClanTag, hasClanTagPos, hasTypeFlag) {
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this.debugLog("starting player parse attempt:");
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this.debugLog("isEtqw: " + isEtqw);
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this.debugLog("hasClanTag: " + hasClanTag);
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this.debugLog("hasClanTagPos: " + hasClanTagPos);
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this.debugLog("hasTypeFlag: " + hasTypeFlag);
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const reader = this.reader(rest);
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let lastId = -1;
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const players = [];
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while(true) {
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this.debugLog("---");
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if (reader.done()) {
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this.debugLog("* aborting attempt, overran buffer *");
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return null;
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}
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const player = {};
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player.id = reader.uint(1);
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this.debugLog("id: " + player.id);
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if (player.id <= lastId || player.id > 0x20) {
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this.debugLog("* aborting attempt, invalid player id *");
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return null;
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}
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lastId = player.id;
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if(player.id === 0x20) {
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this.debugLog("* player parse successful *");
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break;
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}
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player.ping = reader.uint(2);
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this.debugLog("ping: " + player.ping);
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if(!isEtqw) {
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player.rate = reader.uint(4);
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this.debugLog("rate: " + player.rate);
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}
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player.name = this.stripColors(reader.string());
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this.debugLog("name: " + player.name);
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if(hasClanTag) {
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if(hasClanTagPos) {
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const clanTagPos = reader.uint(1);
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this.debugLog("clanTagPos: " + clanTagPos);
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}
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player.clantag = this.stripColors(reader.string());
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this.debugLog("clan tag: " + player.clantag);
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}
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if(hasTypeFlag) {
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player.typeflag = reader.uint(1);
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this.debugLog("type flag: " + player.typeflag);
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}
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players.push(player);
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}
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return [players,reader];
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}
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stripColors(str) {
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// uses quake 3 color codes
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return str.replace(/\^(X.{6}|.)/g,'');
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}
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}
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module.exports = Doom3;
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