everything
This commit is contained in:
elijahr2411
315
src/WSServer.ts
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315
src/WSServer.ts
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import {WebSocketServer, WebSocket} from 'ws';
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import * as http from 'http';
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import IConfig from './IConfig';
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import internal from 'stream';
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import * as Utilities from './Utilities';
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import { User, Rank } from './User';
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import * as guacutils from './guacutils';
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import * as fs from 'fs';
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import { CircularBuffer, Queue } from 'mnemonist';
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import { createHash } from 'crypto';
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import { isIP } from 'net';
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export default class WSServer {
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private Config : IConfig;
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private server : http.Server;
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private socket : WebSocketServer;
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private clients : User[];
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private ChatHistory : CircularBuffer<{user:string,msg:string}>
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private TurnQueue : Queue<User>;
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private TurnTime : number;
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private TurnInterval? : NodeJS.Timer;
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private TurnIntervalRunning : boolean;
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private ModPerms : number;
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constructor(config : IConfig) {
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this.ChatHistory = new CircularBuffer<{user:string,msg:string}>(Array, 5);
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this.TurnQueue = new Queue<User>();
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this.TurnTime = 0;
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this.TurnIntervalRunning = false;
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this.clients = [];
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this.Config = config;
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this.ModPerms = Utilities.MakeModPerms(this.Config.collabvm.moderatorPermissions);
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this.server = http.createServer();
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this.socket = new WebSocketServer({noServer: true});
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this.server.on('upgrade', (req : http.IncomingMessage, socket : internal.Duplex, head : Buffer) => this.httpOnUpgrade(req, socket, head));
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this.socket.on('connection', (ws : WebSocket, req : http.IncomingMessage) => this.onConnection(ws, req));
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}
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listen() {
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this.server.listen(this.Config.http.port, this.Config.http.host);
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}
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private httpOnUpgrade(req : http.IncomingMessage, socket : internal.Duplex, head : Buffer) {
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var killConnection = () => {
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socket.write("HTTP/1.1 400 Bad Request\n\n400 Bad Request");
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socket.destroy();
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}
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if (
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req.headers['sec-websocket-protocol'] !== "guacamole"
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// || req.headers['origin']?.toLocaleLowerCase() !== "https://computernewb.com"
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) {
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killConnection();
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return;
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}
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if (this.Config.http.proxying) {
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// If the requesting IP isn't allowed to proxy, kill it
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//@ts-ignore
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if (this.Config.http.proxyAllowedIps.indexOf(req.socket.remoteAddress) === -1) {
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killConnection();
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return;
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}
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var _ip;
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try {
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// Get the first IP from the X-Forwarded-For variable
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_ip = req.headers["x-forwarded-for"]?.toString().replace(/\ /g, "").split(",")[0];
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} catch {
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// If we can't get the ip, kill the connection
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killConnection();
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return;
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}
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// If for some reason the IP isn't defined, kill it
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if (!_ip) {
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killConnection();
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return;
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}
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// Make sure the ip is valid. If not, kill the connection.
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if (!isIP(_ip)) {
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killConnection();
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return;
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}
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//@ts-ignore
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req.proxiedIP = _ip;
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}
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this.socket.handleUpgrade(req, socket, head, (ws) => this.socket.emit('connection', ws, req));
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}
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private onConnection(ws : WebSocket, req : http.IncomingMessage) {
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var ip;
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if (this.Config.http.proxying) {
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//@ts-ignore
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if (!req.proxiedIP) return;
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//@ts-ignore
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ip = req.proxiedIP;
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} else {
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if (!req.socket.remoteAddress) return;
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ip = req.socket.remoteAddress;
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}
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var user = new User(ws, ip, this.Config);
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this.clients.push(user);
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ws.on('close', () => this.connectionClosed(user));
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ws.on('message', (e) => {
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var msg;
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try {msg = e.toString()}
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catch {
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// Fuck the user off if they send a non-string message
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user.closeConnection();
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return;
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}
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this.onMessage(user, msg);
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});
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user.sendMsg(this.getAdduserMsg());
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console.log(`[Connect] From ${user.IP}`);
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};
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private connectionClosed(user : User) {
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this.clients.splice(this.clients.indexOf(user), 1);
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console.log(`[DISCONNECT] From ${user.IP}${user.username ? ` with username ${user.username}` : ""}`);
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if (!user.username) return;
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if (this.TurnQueue.toArray().indexOf(user) !== -1) {
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var hadturn = (this.TurnQueue.peek() === user);
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this.TurnQueue = Queue.from(this.TurnQueue.toArray().filter(u => u !== user));
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if (hadturn) this.nextTurn();
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}
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//@ts-ignore
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this.clients.forEach((c) => c.sendMsg(guacutils.encode("remuser", "1", user.username)));
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}
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fuck = fs.readFileSync("/home/elijah/Pictures/thumb.txt").toString();
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private onMessage(client : User, message : string) {
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var msgArr = guacutils.decode(message);
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if (msgArr.length < 1) return;
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switch (msgArr[0]) {
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case "list":
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client.sendMsg(guacutils.encode("list", this.Config.collabvm.node, this.Config.collabvm.displayname, this.fuck))
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break;
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case "connect":
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if (!client.username || msgArr.length !== 2 || msgArr[1] !== this.Config.collabvm.node) {
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client.sendMsg(guacutils.encode("connect", "0"));
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return;
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}
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client.connectedToNode = true;
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client.sendMsg(guacutils.encode("connect", "1", "1", "1", "0"));
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if (this.Config.collabvm.motd) client.sendMsg(guacutils.encode("chat", "", this.Config.collabvm.motd));
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if (this.ChatHistory.size !== 0) client.sendMsg(this.getChatHistoryMsg());
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client.sendMsg(guacutils.encode("size", "0", "400", "300"));
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client.sendMsg(guacutils.encode("png", "0", "0", "0", "0", this.fuck));
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break;
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case "rename":
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if (!client.RenameRateLimit.request()) return;
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// This shouldn't need a ternary but it does for some reason
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var hadName : boolean = client.username ? true : false;
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var oldname : any;
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if (hadName) oldname = client.username;
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if (msgArr.length === 1) {
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client.assignGuestName(this.getUsernameList());
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} else {
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var newName = msgArr[1];
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if (hadName && newName === oldname) {
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//@ts-ignore
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client.sendMsg(guacutils.encode("rename", "0", "0", client.username));
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return;
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}
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if (this.getUsernameList().indexOf(newName) !== -1) {
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client.sendMsg(guacutils.encode("rename", "0", "1"));
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return;
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}
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if (!/^[a-zA-Z0-9\ \-\_\.]+$/.test(newName)) {
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client.sendMsg(guacutils.encode("rename", "0", "2"));
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return;
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}
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if (this.Config.collabvm.usernameblacklist.indexOf(newName) !== -1) {
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client.sendMsg(guacutils.encode("rename", "0", "3"));
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return;
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}
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client.username = newName;
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}
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//@ts-ignore
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client.sendMsg(guacutils.encode("rename", "0", "0", client.username));
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if (hadName) {
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console.log(`[RENAME] ${client.IP} from ${oldname} to ${client.username}`);
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this.clients.filter(c => c.username !== client.username).forEach((c) =>
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//@ts-ignore
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c.sendMsg(guacutils.encode("rename", "1", oldname, client.username)));
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} else {
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console.log(`[RENAME] ${client.IP} to ${client.username}`);
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this.clients.forEach((c) =>
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//@ts-ignore
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c.sendMsg(guacutils.encode("adduser", "1", client.username, client.rank)));
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}
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break;
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case "chat":
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if (!client.username) return;
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if (client.muted) return;
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if (msgArr.length !== 2) return;
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var msg = Utilities.HTMLSanitize(msgArr[1]);
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// One of the things I hated most about the old server is it completely discarded your message if it was too long
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if (msg.length > this.Config.collabvm.maxChatLength) msg = msg.substring(0, this.Config.collabvm.maxChatLength);
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if (msg.length < 1) return;
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//@ts-ignore
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this.clients.forEach(c => c.sendMsg(guacutils.encode("chat", client.username, msg)));
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this.ChatHistory.push({user: client.username, msg: msg});
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client.onMsgSent();
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break;
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case "turn":
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if (!client.TurnRateLimit.request()) return;
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if (!client.connectedToNode) return;
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if (msgArr.length > 2) return;
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var takingTurn : boolean;
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if (msgArr.length === 1) takingTurn = true;
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else switch (msgArr[1]) {
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case "0":
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takingTurn = false;
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break;
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case "1":
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takingTurn = true;
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break;
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default:
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return;
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break;
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}
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if (takingTurn) {
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// If the user is already in the queue, fuck them off
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if (this.TurnQueue.toArray().indexOf(client) !== -1) return;
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// If they're muted, also fuck them off.
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// Send them the turn queue to prevent client glitches
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if (client.muted) return;
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this.TurnQueue.enqueue(client);
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if (this.TurnQueue.size === 1) this.nextTurn();
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} else {
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var hadturn = (this.TurnQueue.peek() === client);
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this.TurnQueue = Queue.from(this.TurnQueue.toArray().filter(u => u !== client));
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if (hadturn) this.nextTurn();
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}
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this.sendTurnUpdate();
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break;
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case "admin":
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if (msgArr.length < 2) return;
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switch (msgArr[1]) {
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case "2":
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if (!client.LoginRateLimit.request()) return;
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if (msgArr.length !== 3) return;
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var sha256 = createHash("sha256");
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sha256.update(msgArr[2]);
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var pwdHash = sha256.digest('hex');
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sha256.destroy();
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if (pwdHash === this.Config.collabvm.adminpass) {
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client.rank = Rank.Admin;
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client.sendMsg(guacutils.encode("admin", "0", "1"));
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} else if (this.Config.collabvm.moderatorEnabled && pwdHash === this.Config.collabvm.modpass) {
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client.rank = Rank.Moderator;
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client.sendMsg(guacutils.encode("admin", "0", "3", this.ModPerms.toString()));
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} else {
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client.sendMsg(guacutils.encode("admin", "0", "0"));
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return;
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}
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//@ts-ignore
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this.clients.forEach((c) => c.sendMsg(guacutils.encode("adduser", "1", client.username, client.rank)));
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break;
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}
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break;
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}
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}
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getUsernameList() : string[] {
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var arr : string[] = [];
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//@ts-ignore
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this.clients.filter(c => c.username).forEach((c) => arr.push(c.username));
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return arr;
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}
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getAdduserMsg() : string {
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var arr : string[] = ["adduser", this.clients.length.toString()];
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//@ts-ignore
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this.clients.filter(c=>c.username).forEach((c) => arr.push(c.username, c.rank));
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return guacutils.encode(...arr);
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}
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getChatHistoryMsg() : string {
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var arr : string[] = ["chat"];
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this.ChatHistory.forEach(c => arr.push(c.user, c.msg));
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return guacutils.encode(...arr);
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}
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private sendTurnUpdate() {
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var turnQueueArr = this.TurnQueue.toArray();
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var arr = ["turn", (this.TurnTime * 1000).toString(), this.TurnQueue.size.toString()];
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// @ts-ignore
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this.TurnQueue.forEach((c) => arr.push(c.username));
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var currentTurningUser = this.TurnQueue.peek();
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this.clients.filter(c => (c !== currentTurningUser && c.connectedToNode)).forEach((c) => {
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if (turnQueueArr.indexOf(c) !== -1) {
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var time = ((this.TurnTime * 1000) + ((turnQueueArr.indexOf(c) - 1) * this.Config.collabvm.turnTime * 1000));
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c.sendMsg(guacutils.encode(...arr, time.toString()));
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} else {
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c.sendMsg(guacutils.encode(...arr));
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}
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});
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if (currentTurningUser)
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currentTurningUser.sendMsg(guacutils.encode(...arr));
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}
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private nextTurn() {
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clearInterval(this.TurnInterval);
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if (this.TurnQueue.size === 0) {
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this.TurnIntervalRunning = false;
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} else {
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this.TurnTime = this.Config.collabvm.turnTime;
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this.TurnInterval = setInterval(() => this.turnInterval(), 1000);
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}
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this.sendTurnUpdate();
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}
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private turnInterval() {
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this.TurnTime--;
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if (this.TurnTime < 1) {
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this.TurnQueue.dequeue();
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this.nextTurn();
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}
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}
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}
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