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index.js
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index.js
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const ByteBuffer = require('bytebuffer');
const EventEmitter = require('events').EventEmitter;
const SteamID = require('steamid');
const Util = require('util');
const Language = require('./language.js');
const Protos = require('./protobufs/generated/_load.js');
const STEAM_APPID = 1046930;
module.exports = Underlords;
Util.inherits(Underlords, EventEmitter);
function Underlords(steam) {
if (steam.packageName != 'steam-user' || !steam.packageVersion || !steam.constructor) {
throw new Error('underlords v2 only supports steam-user v4.2.0 or later.');
} else {
let parts = steam.packageVersion.split('.');
if (parts[0] < 4 || parts[1] < 2) {
throw new Error(`underlords v2 only supports steam-user v4.2.0 or later. ${steam.constructor.name} v${steam.packageVersion} given.`);
}
}
this._steam = steam;
this.haveGCSession = false;
this._isInUnderlords = false;
this._steam.on('receivedFromGC', (appid, msgType, payload) => {
if (appid != STEAM_APPID) {
return; // we don't care
}
let isProtobuf = !Buffer.isBuffer(payload);
let handler = null;
if (this._handlers[msgType]) {
handler = this._handlers[msgType];
}
let msgName = msgType;
for (let i in Language) {
if (Language.hasOwnProperty(i) && Language[i] == msgType) {
msgName = i;
break;
}
}
this.emit('debug', "Got " + (handler ? "handled" : "unhandled") + " GC message " + msgName + (isProtobuf ? " (protobuf)" : ""));
if (handler) {
handler.call(this, isProtobuf ? payload : ByteBuffer.wrap(payload, ByteBuffer.LITTLE_ENDIAN));
}
});
this._steam.on('appLaunched', (appid) => {
if (this._isInUnderlords) {
return; // we don't care if it was launched again
}
if (appid == STEAM_APPID) {
this._isInUnderlords = true;
if (!this.haveGCSession) {
this._connect();
}
}
});
let handleAppQuit = (emitDisconnectEvent) => {
if (this._helloInterval) {
clearInterval(this._helloInterval);
this._helloInterval = null;
}
if (this.haveGCSession && emitDisconnectEvent) {
this.emit('disconnectedFromGC', Underlords.GCConnectionStatus.NO_SESSION);
}
this._isInUnderlords = false;
this.haveGCSession = false;
};
this._steam.on('appQuit', (appid) => {
if (!this._isInUnderlords) {
return;
}
if (appid == STEAM_APPID) {
handleAppQuit(false);
}
});
this._steam.on('disconnected', () => {
handleAppQuit(true);
});
this._steam.on('error', (err) => {
handleAppQuit(true);
});
}
Underlords.prototype._connect = function() {
if (!this._isInUnderlords || this._helloTimer) {
this.emit('debug', "Not trying to connect due to " + (!this._isInUnderlords ? "not in Underlords" : "has helloTimer"));
return; // We're not in CS:GO or we're already trying to connect
}
let sendHello = () => {
if (!this._isInUnderlords) {
this.emit('debug', "Not sending hello because we're no longer in CS:GO");
delete this._helloTimer;
return;
} else if (this.haveGCSession) {
this.emit('debug', "Not sending hello because we have a session");
clearTimeout(this._helloTimer);
delete this._helloTimer;
return;
}
this._send(Language.ClientHello, Protos.CMsgClientHello, {});
this._helloTimerMs = Math.min(60000, (this._helloTimerMs || 1000) * 2); // exponential backoff, max 60 seconds
this._helloTimer = setTimeout(sendHello, this._helloTimerMs);
this.emit('debug', "Sending hello, setting timer for next attempt to " + this._helloTimerMs + " ms");
};
this._helloTimer = setTimeout(sendHello, 500);
};
Underlords.prototype._send = function(type, protobuf, body) {
if (!this._steam.steamID) {
return false;
}
let msgName = type;
for (let i in Language) {
if (Language[i] == type) {
msgName = i;
break;
}
}
this.emit('debug', "Sending GC message " + msgName);
if (protobuf) {
this._steam.sendToGC(STEAM_APPID, type, {}, protobuf.encode(body).finish());
} else {
// This is a ByteBuffer
this._steam.sendToGC(STEAM_APPID, type, null, body.flip().toBuffer());
}
return true;
};
Underlords.prototype.requestProfile = function(steamid, callback) {
if (typeof steamid == 'string') {
steamid = new SteamID(steamid);
}
if (!steamid.isValid() || steamid.universe != SteamID.Universe.PUBLIC || steamid.type != SteamID.Type.INDIVIDUAL || steamid.instance != SteamID.Instance.DESKTOP) {
return false;
}
this._send(Language.GetProfile, Protos.CMsgClientToGCGetProfile, {
account_id: steamid.accountid
});
if(callback){
this.once('playersProfile', callback);
}
};
Underlords.prototype.requestMatches = function(steamid, rows = 20, callback){
if (typeof steamid == 'string') {
steamid = new SteamID(steamid);
}
if (!steamid.isValid() || steamid.universe != SteamID.Universe.PUBLIC || steamid.type != SteamID.Type.INDIVIDUAL || steamid.instance != SteamID.Instance.DESKTOP) {
return false;
}
this._send(Language.GetMatchHistory, Protos.CMsgClientToGCGetMatchHistory, {
account_id: steamid.accountid,
request_rows: rows,
match_id_cursor: 0
});
if(callback){
this.once('matchList', callback);
}
}
Underlords.prototype.requestMatch = function(match_id, callback){
this._send(Language.GetPostMatchStats, Protos.CMsgClientToGCGetPostMatchStats, {
match_id
});
if(callback){
this.once('match', callback);
}
}
Underlords.prototype._handlers = {};
require('./enums.js');
require('./handlers.js');