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path: root/server/lib/auth.js
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/* jshint node: true */

var passport = require('passport'),
	FacebookStrategy = require('passport-facebook').Strategy,
	TwitterStrategy = require('passport-twitter').Strategy,
	LocalStrategy = require('passport-local').Strategy,
	passportSocketIo = require("passport.socketio"),
	crypto = require('crypto'),
	_ = require('lodash'),
	util = require('./util'),
	config = require('../../config.json'),
	User = require('./schemas/User');

var auth = {

	init: function () { 
		passport.serializeUser(auth.serializeUser);
		passport.deserializeUser(auth.deserializeUser);
		
		passport.use(new LocalStrategy(auth.verifyLocalUser))
		
		passport.use(new TwitterStrategy({
			consumerKey: process.env.VVALLS_TWITTER_KEY || '0L5blfBIapqhpons8bCXdIoGM',
			consumerSecret: process.env.VVALLS_TWITTER_SECRET || '5EKW7m7inoODqYSKbp7cadBKFp1FghBl4MBDoXNcUjKtodZfuP',
			callbackURL: 'http://' + config.host + '/auth/twitter/callback'
		}, auth.insertTwitterUser));
		
		passport.use(new FacebookStrategy({
			clientID: process.env.VVALLS_FACEBOOK_KEY || '719828821410310',
			clientSecret: process.env.VVALLS_FACEBOOK_SECRET || 'f9aba78e08f37f621eadb88b1409d48c',
			callbackURL: 'http://' + config.host + '/auth/facebook/callback',
			enableProof: false,
		}, auth.insertFacebookUser));
	},
	
	initSockets: function (io, cookieParser, SessionStore) {
		io.set('authorization', passportSocketIo.authorize({
			cookieParser: express.cookieParser,
			passport:     passport,
			key:          'vvalls.sid',        // the name of the cookie where express/connect stores its session_id
			secret:       'flibbertigibbet',   // the session_secret to parse the cookie
			store:        SessionStore,        // we NEED to use a sessionstore. no memorystore please
			success:      auth.socketSuccess,
			fail:         auth.socketFail,
		}));
	},
	
	socketSuccess: function (data, accept) {
		// console.error('successful connection to socket.io');
		accept(null, true);
	},
	
	socketFail: function (data, message, error, accept){
		if (error) {
			throw new Error(message);
		}
		// console.log(data)
		console.error('failed connection to socket.io:', message);

		// We use this callback to log all of our failed connections.
		accept(null, false);
	},

	// technically these return the login middleware
	login: function (strategy) {
		return passport.authenticate(strategy);
	},
	
	loggedIn: function (strategy) {
		return passport.authenticate(strategy, {
			successReturnToOrRedirect: '/',
			failureRedirect: '/login'
		});
	},

	loggedInLocal: function (req, res, next) {
		passport.authenticate("local", function(err, user, info){
			if (err) {
				return res.json({ error: err });
			}
			if (! user) {
				return info ? res.json(info) : res.redirect("/login");
			}
			req.logIn(user, function(err) {
				if (err) { return next(err); }
				return res.json({ status: "OK" })
			});
		})(req, res, next);
	},

	logout: function (req, res) {
		req.logout();
		res.redirect('/');
	},

	serializeUser: function (user, done) {
		done(null, user._id);
	},

	deserializeUser: function (id, done) {
		User.findOne({ _id: id }, "_id displayName username photo isStaff", function (err, user) {
			done(err, user);
		});
	},

	signup: function (req, res){
		var username = util.trim(req.body.username)
		var password = req.body.password
		var email = util.trim(req.body.email)

		var shasum = crypto.createHash('sha1')
		shasum.update(password)
		password = shasum.digest('hex');
		
		User.findOne({ username: username }, "_id username", function (err, user) {
			if (user) {
				res.json({ error: { errors: { username: { message: "Username has been taken" } } } })
				return
			}
			var data = {
				username: username,
				displayName: username,
				password: password,
				email: email,
				created_ip: util.ipToNum(req.connection.remoteAddress),
				last_ip: util.ipToNum(req.connection.remoteAddress),
				created_at: new Date ()
			}
			new User(data).save(function(err, user){
				if (err || ! data) { return res.json({ error: err }) }

				req.login(user, function(){
					res.json({ status: "OK", payload: user })
				})
			})
		})
	},

	verifyLocalUser: function (username, password, done) {
		User.findOne({ username: username }, function(err, user){
			if (err) { return done(err); }
			if (!user) {
				return done(null, false, { error: { errors: { username: { message: 'Incorrect username.' } }}})
			}
			if (! user.validPassword(password)) {
				return done(null, false, { error: { errors: { password: { message: 'Incorrect password.' } }}})
			}
			return done(null, user);
		});
	},

	insertTwitterUser: function (accessToken, refreshToken, profile, done) {
		process.nextTick(function () {
			var userData = {
				twitter_id: profile.id,
				username: profile.username,
				displayName: profile.displayName,
				photo: profile.photos[0].value,
				twitterName: profile.username,
			};
			
			User.findOne({twitter_id: profile.id}, function(err, data){
				if (! err && data) {
					return done(err, data);
				}
				new User(userData).save(function(err, data){
					if (err) { console.error(err) }
					return done(err, data)
				})
			});
			
		});
	},

	insertFacebookUser: function (accessToken, refreshToken, profile, done) {
		process.nextTick(function () {
			var userData = {
				facebook_id: profile.id,
				username: profile.username || profile.displayName.toLowerCase().replace(/ /g,'-'),
				displayName: profile.displayName,
				photo: "http://graph.facebook.com/" + profile.id + "/picture?type=large",
				facebookUrl: profile.username ? "https://facebook.com/" + profile.username : ""
			};

			User.findOne({facebook_id: profile.id}, function(err, data){
				if (! err && data) {
					return done(err, data);
				}
				new User(userData).save(function(err, data){
					if (err) { console.error(err) }
					return done(err, data)
				})
			});

		});
	},

}

module.exports = auth