passport google oauth on localhost

Question

I am quite new at using passport for authentication over node, hence the lot of code snippets

my server is configured as :

var router = require(\'./a         


        

Answer 1

Currently OAUTH2 protocol for authentication and autherization is well supported by google.So Its better to use the same . Here is google's documentation on it .Use 'passport-google-oauth' module . Here is the implementation.This should be the app objects configuration , also see that oauth2strategy object is used from passport-google-oauth module , also check out the scopes in the app.get route registration .

var googleStrategy = require('passport-google-oauth').OAuth2Strategy;
  app.configure(function() {

    app.set('views',  './views');
    app.set('view engine', 'jade');
    app.use(express.favicon());
    app.use(express.logger('dev'));
    app.use(express.cookieParser());
    app.use(express.bodyParser());
    app.use(express.session({secret:'MySecret'}));
    app.use(passport.initialize());
    app.use(passport.session());
    app.use(express.methodOverride());
    app.use(app.router);
    app.use(express.static('./public'));
});

app.get('/auth/google', select.passport.authenticate('google',{scope: 'https://www.googleapis.com/auth/plus.me https://www.google.com/m8/feeds https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile'}));

app.get('/auth/google/callback', function() {
    passport.authenticate('google', {
        successRedirect: '/profile',
        failureRedirect: '/fail'
    });
});
app.get('/logout', function (req, res) {
        req.logOut();
        res.redirect('/');
    });

But before creating a new strategy go to googles developer console and get clientID and secret . Here are the steps

1. go this link and create project , here is the snapshot of the same
2. give a new project name and ID , here is the snapshot
3. It'll roughly take a minute to create your new project , once your new project is created it'll redirect you to the application configuration of your app . In the redirected page select APIS AND AUTH -> API's , In the API's page enable the GOogle+ API , here is the snapshot of it

4. then go to credentials(below APIs), then click on Create New Client Id , and register the domains and callback for your app(configure the domain to be localhost ) , here is its snapshot ! 5.Then u'll get your new ID and secret . Use them to create the new Strategy

   passport.use(new googleStrategy({
       clientID: '',
       clientSecret: '',
   
       callbackURL: "http://locahost:8080/auth/google/callback"
   },
   function (accessToken, refreshToken, profile, done) {
       console.log(profile); //profile contains all the personal data returned 
       done(null, profile)
   }
   ));
   

6.now serialize and deserialize

passport.serializeUser(function(user, callback){
        console.log('serializing user.');
        callback(null, user.id);
    });

passport.deserializeUser(function(user, callback){
       console.log('deserialize user.');
       callback(null, user.id);
    });

run the server and go to localhost:8080/auth/google (dont use 127.0.0.1:8080 instead of locahost ) .This should be getting it working :)

[Other useful links: Check out the first comment by kvcrawford on the repo of the module in this page Passport-google is another popular module which is use to provide login using google , its kind of outdated now , here is the link with respect to its recent issues ]