Passport strategy for authenticating with Cloud Foundry open PaaS using the OAuth 2.0 API.
$ npm install passport-cloudfoundry
The CloudFoundry authentication strategy authenticates users using a CloudFoundry
account and OAuth 2.0 tokens. The strategy requires a verify callback, which
accepts these credentials and calls done providing a user, as well as
options specifying a client ID, client secret, and callback URL.
var cfStrategy = new CloudFoundryStrategy({
clientID: CF_CLIENT_ID,
clientSecret: CF_CLIENT_SECRET,
callbackURL: CF_CALLBACK_URL
}, function(accessToken, refreshToken, profile, done) { //verify callback
// asynchronous verification, for effect...
process.nextTick(function() {
// To keep the example simple, the user's CloudFoundry profile is returned to
// represent the logged-in user. In a typical application, you would want
// to associate the CloudFoundry account with a user record in your database,
// and return that user instead.
return done(null, profile);
});
});
//****************************************
// Examples 2 (w/ 'state' parameter):
//****************************************
var CloudFoundryStrategy = require('passport-cloudfoundry').Strategy;
var cfStrategy = new CloudFoundryStrategy({
clientID: '123-456-789',
clientSecret: 'shhh-its-a-secret'
callbackURL: 'https://myapp.cloudfoundry.com/auth/cloudfoundry/callback',
passReqToCallback: true //<---- Pass this to get req (as 1st param)from CF.com to callback
},
function(req, accessToken, refreshToken, profile, done) {
//Verify things like 'state' in req.query (be sure to set: passReqToCallback=true)
if(req.query.state === 'stateValueIpreviouslySent') {
User.findOrCreate(..., function (err, user) {
done(err, user);
});
} else {
done({error: 'state value didnt match.. possible CSRF?'});
}
});
// Set a callback to generate 'state' value.
cfStrategy.setStateParamCallBack(generateState);
Where.. 'generateState' generates new state and stores is somwhere
and returns that random value back.
// Temporarily store `state` ids
var states = {};
// Generates a random value to be used as 'state' param during authorization
function generateStateParam() {
var state = uuid.v4();
states[state] = true;
return state;
}
// Finally, in your 'finalCallback',check if that state exists
if(req.query.state && states[req.query.state]) {
done(null, user);
//delete it from memory
delete states[req.query.state];
} else {
done({"error": 'state value didn't match. possible CSRF?'})
}
// Pass the strategy
passport.use(cfStrategy);In Express apps, you need to add the below middlewares. Also make sure to add them after Express' session middleware
// Initialize Passport! Also use passport.session() middleware, to support
// persistent login sessions (recommended).
app.use(passport.initialize());
app.use(passport.session());For passport to work, you need to add two routes.
app.get('/auth/cloudfoundry'…to start OAuthapp.get('/auth/cloudfoundry/callback'…to receive OAuth callback back from Cloud Foundry. * NOTE: This must match your callback url's path that you used to register the app.
For example, as route middleware in an Express application:
app.get('/auth/cloudfoundry',
passport.authenticate('cloudfoundry'),
function(req, res){
// The request will be redirected to CloudFoundry for authentication, so
// this function will not be called.
});
app.get('/auth/cloudfoundry/callback',
passport.authenticate('cloudfoundry', { failureRedirect: '/login' }),
function(req, res) {
// Successful authentication, redirect home.
res.redirect('/');
});
w/ 'state' parameter (& verify/match it in the main callback to ensure no CSRF)
app.get('/auth/cloudfoundry',
passport.authenticate('cloudfoundry', {state: 'generateSomeRandomStateString'}),
function(req, res){
// The request will be redirected to CloudFoundry for authentication, so
// this function will not be called.
});To logout, call req.logout() AND cfStrategy.reset() like below:
app.get('/', function(req, res) {
if(!req.user) {
req.session.destroy();
req.logout();
cfStrategy.reset(); //required!
return res.redirect('/login');
}
res.render('index', {
user: req.user
});
});The example app is located in the /examples folder. But here are the details.
- Git clone this repo to
passport-cloudfoundryfolder (notenpm installwon't download examples, docs etc). cd passport-cloudfoundry/examples/loginnpm install- Open
login/app.jsand setCF_CLIENT_ID,CF_CLIENT_SECRET&CF_CALLBACK_URL- You will get these info when you register your app (see below).
//Set Cloud Foundry app's clientID
var CF_CLIENT_ID = '--insert-cloudfoundry-client-id-here--';
//Set Cloud Foundry app's clientSecret
var CF_CLIENT_SECRET = '--insert-cloudfoundry-client-secret-here--';
// Note: You should have a app.get(..) for this callback to receive callback from Cloud Foundry
// For example: If your callback url is: https://myKoolapp.cloudfoundry.com/auth/cloudfoundry/callback
// then, you should have a HTTP GET endpoint like: app.get('/auth/cloudfoundry/callback', callback))
//
var CF_CALLBACK_URL = '--insert-cloudfoundry--url--/auth/cloudfoundry/callback';
node app.jsto run app onlocalhost:3000- PS: You should run this app at a pre-registered location that you provided during registering your app.
- Open up browser & open the app.
- Register your app at Cloud Foundry at: http://support.cloudfoundry.com/
- Provide your app name. e.g. MyCoolApp
- Provide a app's server domain for callback. e.g. mycoolapp.cloudfoundry.com
Once the app is up and running, here is how it works:
####2. Your browser will be redirected to https://login.cloudfoundry.com/login (default auth url): ####
####3. If you Sign-in using your cloudfoundry.com account, you will see ####
4. If you Approve, browser will redirect you to your app w/ access_token & user info. And you will see:
$ npm install --dev
$ make test
(MIT) VMware
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