yoanm / alfred-personal-assistant

server/privacy.js

var express = require('express');

var extend  = require('extend');

var request = require('request');


// ------------------------------------------

//  CONSTRUCTOR

// ------------------------------------------


var init = function(){

  info('Starting PrivacyManager ...');

  salt();

  

  return PrivacyManager;

}


// ------------------------------------------

//  USERS

// ------------------------------------------


var findByUsername = function (username, fn) {

  setTimeout(function(){ // slow bruteforce

    

    var user = Config.auth['local-users'][username]

    if (user){ return fn(null, user); }

    return fn(null, null);

    

  }, 1000);

}


// ------------------------------------------

//  PASSPORT

// ------------------------------------------


var passport = require('passport');


passport.serializeUser  (function(user, done) { /*info('serializeUser',   user);*/ done(null, user); });

passport.deserializeUser(function(obj, done)  { /*info('deserializeUser', obj);*/  done(null, obj);  });


// ------------------------------------------

//  LOCAL STRATEGY

// ------------------------------------------


var setLocalStrategy = function(passport, router){

  router.get('/login', function(req, res, next) {

    res.render('portal/login.ejs', { 'redirect' : req.query.redirect });

  });

  

  router.post('/login', 

    passport.authenticate('local', { failureRedirect: '/login', failureFlash: false }), function(req, res) { 

      if (req.body.redirect){

        res.redirect(req.body.redirect);

      } else {

        res.redirect('/');

      } 

    }

  );

  

  var LocalStrategy = require('passport-local').Strategy;

  passport.use(new LocalStrategy(local));

}


var local = function(username, password, done) {

  process.nextTick(function () {

    findByUsername(username, function(err, user) {

      

      if (err) { return done(err); }

      if (!user) { return done(null, false, { message: 'Unknown user ' + username }); }

      

      var passHash = hash(password);

      if (user.password != passHash) { 

        info('Invalid password');

        return done(null, false, { message: 'Invalid password' }); 

      }

      

      return done(null, user);

    });

  });

}


// ------------------------------------------

//  ROUTER

// ------------------------------------------


var Router = express.Router();

Router.use(passport.initialize());

Router.use(passport.session());


Router.get('/logout', function(req, res){

  req.logout();

  res.redirect('/');

});


// Set local strategy

setLocalStrategy(passport, Router);


// Set google strategy

// setGoogleStrategy(passport, Router);


// Security

Router.all('*', function(req, res, next) {

  

  // Security Hole: ByPass for client

  if ( req.path.startsWith('/sarah') 

    || req.path.startsWith('/askme')

    || req.path.startsWith('/standby')){

    return next();

  }

  

  // Set user authentication 

  if (Config.auth && Config.auth['local-users']){

  if (!req.isAuthenticated()){ 

    

    var redirectURL = encodeURIComponent(req.url);

    return res.redirect('/login?redirect='+redirectURL); }  

  } else { req.user = { displayName : '' }}

  

  next();

});


Router.get('/profile', function(req, res){

  res.render('portal/profile.ejs', { "user" : req.user });

});


Router.post('/profile', function(req, res){

  

  var username    = req.body.username;

  var password    = req.body.password;

  var newPassword = req.body.newpassword;

  var displayName = req.body.displayname;

  

  // Retrieve user

  var user = Config.auth['local-users'][req.user.login];

  

  // Check Old password

  var oldHash = hash(password);

  if (user.password !== oldHash){

    res.redirect('/');

    return;

  }

  

  // Update new password

  var newHash = hash(newPassword);

  user.password = newHash;

  user.displayName = displayName;

  SARAH.ConfigManager.save();

  

  res.redirect('/');

});


Router.get('/profile/delete', function(req, res){

  delete Config.auth['local-users'][req.query.id]

  SARAH.ConfigManager.save();

});


Router.all('/profile/create', function(req, res){

  var msg = undefined;

The assignment of undefined is not necessary as msg is implicitly marked as undefined by the declaration.

  var op  = req.body.op;

  

  if (op){

    if (req.body.login && req.body.password && req.body.displayname){

      Config.auth['local-users'][req.body.login] = {

        login       : req.body.login,

        password    : hash(req.body.password),

        displayName : req.body.displayname,

      }

      SARAH.ConfigManager.save();

    } else { msg = i18n('portal.error.missing'); }

  }

  

  res.render('portal/modal-profile.ejs', { 'message': msg, 'op': op });

});


// ------------------------------------------

//  CRYPTO

// ------------------------------------------


var bcrypt = require('bcryptjs');


var ITERATION = 10000;

var hash   = function(password){

  var salt = Config.auth['local-salt'];

  //    salt = new Buffer(salt, 'hex');

  //var key  = Crypto.pbkdf2Sync(password, salt, ITERATION, 64);

  //var hash = 'pbkdf2$' + ITERATION + '$' + key.toString('hex') + '$' + salt.toString('hex');

  var hash = bcrypt.hashSync(password, salt);

  return hash;

}


var salt = function(){

  if (Config.auth['local-salt'] != false) return;

  

  // var salt = ('salt' + (Math.random()*10000)).replace('.','0');

  var salt = bcrypt.genSaltSync(10);

  var sarahId = 'uid-' + (new Date()).getTime();

  registerSARAH(sarahId);

  

  Config.auth['local-uid']  = sarahId

  Config.auth['local-salt'] = salt

  Config.auth['local-users']          = Config.auth['local-users']          || {};

  Config.auth['local-users']['admin'] = Config.auth['local-users']['admin'] || {};

  

  var admin = Config.auth['local-users']['admin'];

  admin.login       = 'admin';

  admin.password    = hash('password');

  admin.displayName = 'Admin';

  SARAH.ConfigManager.save();

}


var AMZID = '5eVBwYTHp21nzkXrcCC6e4UM93Pr2QMX5cLeD50S';

var registerSARAH = function(id){

 var url = 'http://tracker.sarah.encausse.net';

  request({ 

    'uri' : url+'?trackerId='+id, 

    'json' : true, 

    'headers': {'x-api-key': AMZID } 

  },

  function (err, response, json){

    if (err || response.statusCode != 200) { 

      return warn("Can't register SARAH into the Cloud", err, response);   

    }

  });

}



// ------------------------------------------

//  PUBLIC

// ------------------------------------------


var PrivacyManager = {

  'init' : init,

  'Router' : Router

}


// Exports Manager

exports.init = PrivacyManager.init;