HTML console - core v 0.3

"use strict";
const port = 4500;

const http = require('http');
const url = require('url');
const fs = require('fs');
const sys = require('sys');
const execc = require('child_process').exec;
var consoleHTML = "";
const consolePassword = "EmDriveEmDrive23";
var authorised = false;

var sessions = new Map();



const session = function (ip){
	this.ip = ip;
	this.tries = 0;
}


//Preparing console HTML file
fs.readFile('console.html', 'utf8', function (err,data) {
	if (err) {
		return console.log(err);
	}
	consoleHTML = data;
	//console.log(consoleHTML);
	crtServ();
	console.log("Michael Home Server Command Center v0.1 is running.");
	console.log("Listening on port " + port + ", HTTP protocol.");
});



function crtServ(){
	http.createServer(function (req, res) {
		console.log("|||||||||||||||||||||||||||||||||||||||||||||||||||||||||");
		console.log("Request: " + req.method + " to " + req.url);
		//console.log(req.headers);
		res.writeHead(200, "OK");
		//getting packet body
		if (req.method === "POST"){
			req.on('data', function(chunk){
				console.log("Received command: " + chunk.toString());
				console.log(chunk.toString());
				if (   (sessions.get(req.connection.remoteAddress) != -1)  ){
					console.log("IP:" + req.connection.remoteAddress );
					console.log("Known user: " + sessions.has(req.connection.remoteAddress) );

					console.log("Pswd failures:" + sessions.get(req.connection.remoteAddress));


					if (chunk.toString() != consolePassword) {
						res.write( "Wrong password " );
						if (sessions.has(req.connection.remoteAddress)) {
							let failedTries = sessions.get(req.connection.remoteAddress);
							console.log("failedTries var: " + failedTries);
							if (failedTries === 3){
								setTimeout(function(){
									sessions.set(req.connection.remoteAddress, 0);
									console.log("Unlock: " + req.connection.remoteAddress);

								}, 1080000);


							}
							if (failedTries > 3) {
								console.log ("Blocked account");
								res.write( "3 failed tries. Your session is blocked for next 5 minutes" );
							}
							failedTries++;
							sessions.set(req.connection.remoteAddress, failedTries);
						} else {
							sessions.set(req.connection.remoteAddress, 2);
						}
						res.end();
					} else {
						sessions.set(req.connection.remoteAddress, -1);
						res.write( "Logged in!" );
						req.connection.remoteAddress
						authorised = true;
						res.end();
					}

				} else if (chunk.toString() != ""){
					var incomingCommand = execc(chunk.toString(), function (err, stdout, stderr){
						if (!err){
							res.write( stdout.replace(/</g,"&lt").replace(/	/g,"&nbsp&nbsp").replace(/(?:\r\n|\r|\n)/g, '<br />') );
							res.end();
						} else {
							res.write( stderr.replace(/</g,"&lt").replace(/	/g,"&nbsp&nbsp").replace(/(?:\r\n|\r|\n)/g, '<br />') );
							res.end();
						}

					});
				} else {
					res.write( "No command received from client" );
					res.end();
				}

			});
		} else {
			res.write(consoleHTML);
			res.end();
		}

		//console.log("consoleHTML");

	}).listen(port);
};