Facebook Authentication with Passport and ExpressJS - Why is callback verification not called?

Question

I am a Passport for user authentication in an ExpressJS application. I try to host all Facebook routes in my own module because I intend to support other OAuth providers. At the beginning of the script, I defined the required FB endpoints:

var express = require('express'); var routes = require('./routes'); var user = require('./routes/user'); var facebook = require('./routes/facebook'); var login = require('./routes/login'); var http = require('http'); var path = require('path'); var app = express(); /* Configuration stuff here*/ // development only if ('development' == app.get('env')) { app.use(express.errorHandler()); } app.get('/login', login.index); app.get('/auth/facebook', facebook.fb_auth); app.get('/auth/facebook/callback', facebook.fb_callback); 

As you can see, I need my facebook module, which contains the actual routes, and Facebook the callback. It looks like this:

 var passport = require('passport') , FacebookStrategy = require('passport-facebook').Strategy , User = require('../services/user'); passport.use(new FacebookStrategy({ clientID: 'myclientid', clientSecret: 'mysecretkey', callbackURL: "http://localhost:3000/auth/facebook/callback" //localhost:3000 domain is registered domain in fb }, function(accessToken, refreshToken, profile, done) { console.log('verify') User.findOrCreate(profile, function(err, user){ if(err) return done(err); done(null, user); }); } )); // Redirect the user to Facebook for authentication. When complete, // Facebook will redirect the user back to the application at // /auth/facebook/callback exports.fb_auth = function(req, res){ passport.authenticate('facebook') }; // Facebook will redirect the user to this URL after approval. Finish the // authentication process by attempting to obtain an access token. If // access was granted, the user will be logged in. Otherwise, // authentication has failed. exports.fb_callback = function(req, res){ console.log('callback') passport.authenticate('facebook', { successRedirect: '/', failureRedirect: '/login' }); }; 

I can see (logging to stdout) that fb_auth is being called, but the callback verification function defined above is never. Am I missing something? Is there an error that I can capture?

Thanks!

Answer 1

I found the answer here: Using PassportJS with Connect for NodeJS to authenticate Facebook users

You need to explicitly call the "authenticate" function and provide it with req, res and next.

  exports.fb_auth = function(req, res, next){ passport.authenticate('facebook')(req, res, next); return; }; exports.fb_callback = function(req, res, next){ passport.authenticate('facebook', { successRedirect: '/', failureRedirect: '/login' })(req, res, next); };