demo/app.js

   1 var express = require('express');
   2 var app = express();
   3 var expressWs = require('express-ws')(app);
   4 var os = require('os');
   5 var pty = require('pty.js');
   6
   7 var terminals = {},
   8     logs = {};
   9
  10 app.use('/build', express.static(__dirname + '/../build'));
  11 app.use('/addons', express.static(__dirname + '/../addons'));
  12
  13 app.get('/', function(req, res){
  14   res.sendFile(__dirname + '/index.html');
  15 });
  16
  17 app.get('/style.css', function(req, res){
  18   res.sendFile(__dirname + '/style.css');
  19 });
  20
  21 app.get('/main.js', function(req, res){
  22   res.sendFile(__dirname + '/main.js');
  23 });
  24
  25 app.post('/terminals', function (req, res) {
  26   var cols = parseInt(req.query.cols),
  27       rows = parseInt(req.query.rows),
  28       term = pty.spawn(process.platform === 'win32' ? 'cmd.exe' : 'bash', [], {
  29         name: 'xterm-color',
  30         cols: cols || 80,
  31         rows: rows || 24,
  32         cwd: process.env.PWD,
  33         env: process.env
  34       });
  35
  36   console.log('Created terminal with PID: ' + term.pid);
  37   terminals[term.pid] = term;
  38   logs[term.pid] = '';
  39   term.on('data', function(data) {
  40     logs[term.pid] += data;
  41   });
  42   res.send(term.pid.toString());
  43   res.end();
  44 });
  45
  46 app.post('/terminals/:pid/size', function (req, res) {
  47   var pid = parseInt(req.params.pid),
  48       cols = parseInt(req.query.cols),
  49       rows = parseInt(req.query.rows),
  50       term = terminals[pid];
  51
  52   term.resize(cols, rows);
  53   console.log('Resized terminal ' + pid + ' to ' + cols + ' cols and ' + rows + ' rows.');
  54   res.end();
  55 });
  56
  57 app.ws('/terminals/:pid', function (ws, req) {
  58   var term = terminals[parseInt(req.params.pid)];
  59   console.log('Connected to terminal ' + term.pid);
  60   ws.send(logs[term.pid]);
  61
  62   term.on('data', function(data) {
  63     try {
  64       ws.send(data);
  65     } catch (ex) {
  66       // The WebSocket is not open, ignore
  67     }
  68   });
  69   ws.on('message', function(msg) {
  70     term.write(msg);
  71   });
  72   ws.on('close', function () {
  73     process.kill(term.pid);
  74     console.log('Closed terminal ' + term.pid);
  75     // Clean things up
  76     delete terminals[term.pid];
  77     delete logs[term.pid];
  78   });
  79 });
  80
  81 var port = process.env.PORT || 3000,
  82     host = os.platform() === 'win32' ? '127.0.0.1' : '0.0.0.0';
  83
  84 console.log('App listening to http://' + host + ':' + port);
  85 app.listen(port, host);