Redirecting to previous page after authentication in node.js using passport.js


I'm trying to establish a login mechanism using node.js, express and passport.js. The Login itself works quite nice, also sessions are stored nicely with redis but I do have some troubles with redirecting the user to where he started from before being prompted to authenticate.

e.g. User follows link http://localhost:3000/hidden is then redirected to http://localhost:3000/login but then I want him to be redirected again back to http://localhost:3000/hidden.

The purpose of this is, if the user access randomly a page he needs to be logged in first, he shall be redirected to the /login site providing his credentials and then being redirected back to the site he previously tried to access.

Here is my login post'/login', function (req, res, next) {
    passport.authenticate('local', function (err, user, info) {
        if (err) {
            return next(err)
        } else if (!user) { 
            console.log('message: ' + info.message);
            return res.redirect('/login') 
        } else {
            req.logIn(user, function (err) {
                if (err) {
                    return next(err);
                return next(); // <-? Is this line right?
    })(req, res, next);

and here my ensureAuthenticated Method

function ensureAuthenticated (req, res, next) {
  if (req.isAuthenticated()) { 
      return next();

which hooks into the /hidden page

app.get('/hidden', ensureAuthenticated, function(req, res){
    res.render('hidden', { title: 'hidden page' });

The html output for the login site is quite simple

<form method="post" action="/login">

  <div id="username">
    <input type="text" value="bob" name="username">

  <div id="password">
    <input type="password" value="secret" name="password">

  <div id="info"></div>
    <div id="submit">
    <input type="submit" value="submit">

6/23/2015 7:25:41 AM

Accepted Answer

I don't know about passport, but here's how I do it:

I have a middleware I use with app.get('/account', auth.restrict, routes.account) that sets redirectTo in the session...then I redirect to /login

auth.restrict = function(req, res, next){
    if (!req.session.userid) {
        req.session.redirectTo = '/account';
    } else {

Then in I do the following:

var redirectTo = req.session.redirectTo || '/';
delete req.session.redirectTo;
// is authenticated ?
10/4/2018 3:11:52 AM

In your ensureAuthenticated method save the return url in the session like this:

req.session.returnTo = req.originalUrl; 

Then you can update your passport.authenticate route to something like:

app.get('/auth/google/return', passport.authenticate('google'), function(req, res) {
    res.redirect(req.session.returnTo || '/');
    delete req.session.returnTo;

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