file.js

/**
 * Module dependencies.
 */

var express = require('express')
  , routes = require('./routes')
  , data = require('./routes/data')
  , user = require('./routes/user')
  , http = require('http')
  , path = require('path');

var app = express();

app.configure(function(){
  app.set('port', process.env.PORT || 3000);
  app.set("view options", { layout: false })
  app.set('views', __dirname + '/views');
  app.set('view engine', 'ejs');
  app.use(express.favicon());
  app.use(express.logger('dev'));
  app.use(express.bodyParser());
  app.use(express.methodOverride());
  app.use(express.cookieParser());
  app.use(express.session({cookie: {path: '/', maxAge: null}, secret: 'your secret code to encode the cookie'}));
  app.use(app.router);
  app.use(express.static(path.join(__dirname, 'public')));
});

app.configure('development', function(){
  app.use(express.errorHandler());
});

//app.get('/', routes.index);
app.get('/users', user.list);
 
defaults = {
};
 
var cas = require('cas-sfu');
var casauth = cas.getMiddleware({
  service: 'http://localhost:3000',
    casHost: 'https://cas.thoughtworks.com',
    casBasePath: '/cas',
    loginPath: '/login',
    logoutPath: '/logout',
    validatePath: '/servicevalidate',
    userObject: 'AUTH_USER'
});
 
var loggedin = function(req, res, next) {
    var ticket = (req.session && req.session.ticket) || req.query.ticket;
    
    new cas({
      service: 'http://localhost:3000',
      casHost: 'https://cas.thoughtworks.com',
      casBasePath: '/cas',
      loginPath: '/login',
      logoutPath: '/logout',
      validatePath: '/servicevalidate',
      userObject: 'AUTH_USER'
    }).validate(ticket, function (err, logged, resp) {
      if(!err) {
        req.session.ticket = ticket;
        next();
        return;
      }
      req.session.referer = req.url;  
      res.redirect('/login');
    })
    
};
 
 
app.get('/login', casauth, function(req, res) {
    req.session.AUTH_USER.logindate = new Date();
    res.redirect(req.session.referer || '/');
});
 
app.get('/', loggedin, routes.index);
app.get('/data', data.read);
 
http.createServer(app).listen(app.get('port'), function(){
  console.log("Express server listening on port " + app.get('port'));
});