gclient/app.js

// LinuxServer Guacamole Client

//// Application Variables ////
var crypto = require('crypto');
var ejs = require('ejs');
var express = require('express');
var app = require('express')();
var http = require('http').Server(app);
var CUSTOM_PORT = process.env.CUSTOM_PORT || 3000;

///// Guac Websocket Tunnel ////
var GuacamoleLite = require('guacamole-lite');
var clientOptions = {
  crypt: {
    cypher: 'AES-256-CBC',
    key: 'LSIOGCKYLSIOGCKYLSIOGCKYLSIOGCKY'
  },
  log: {
    verbose: false
  }
};
// Spinup the Guac websocket proxy on port 3000 if guacd is running
var guacServer = new GuacamoleLite({server: http,path:'/guaclite'},{host:'127.0.0.1',port:4822},clientOptions);
// Function needed to encrypt the token string for guacamole connections
var encrypt = (value) => {
  var iv = crypto.randomBytes(16);
  var cipher = crypto.createCipheriv(clientOptions.crypt.cypher, clientOptions.crypt.key, iv);
  let crypted = cipher.update(JSON.stringify(value), 'utf8', 'base64');
  crypted += cipher.final('base64');
  var data = {
    iv: iv.toString('base64'),
    value: crypted
  };
  return new Buffer(JSON.stringify(data)).toString('base64');
};

//// Public JS and CSS ////
app.use('/public', express.static(__dirname + '/public'));
//// Embedded guac ////
app.get("/", function (req, res) {
 if (req.query.login){
    var connectionstring = encrypt(
      {
        "connection":{
          "type":"rdp",
          "settings":{
            "hostname":"127.0.0.1",
            "port":"3389",
            "security": "any",
            "ignore-cert": true
          }
        }
      });
  }
  else{
    var connectionstring = encrypt(
      {
        "connection":{
          "type":"rdp",
          "settings":{
            "hostname":"127.0.0.1",
            "port":"3389",
            "username":"abc",
            "password":"abc",
            "security": "any",
            "ignore-cert": true
          }
        }
      });
  }
  res.render(__dirname + '/rdp.ejs', {token : connectionstring});
});


// Spin up application on CUSTOM_PORT with fallback to port 3000
http.listen(CUSTOM_PORT, function(){
  console.log('listening on *:' + CUSTOM_PORT);
});