Google ID token authentication strategy for Passport.
npm install passport-google-id-tokenpassport-google-id-token
========================
Google ID token authentication strategy for Passport and Node.js.
This module lets you authenticate using Google ID tokens in your Node.js applications.
This is useful for scenarios where we don't want to perform API calls to Google on behalf of the client, but we only want to authenticate it to our server. In short, we only validate the identity of the user by token verification, so there is no server-side OAuth operation.
Official Google documentation:
- Authenticate with a backend server
More information about ID token use cases:
- Client-Server Authentication with ID tokens
- Verifying Back-End Calls from Android Apps
$ npm install passport-google-id-token
#### Configure Strategy
The strategy requires a verify callback which accepts the idToken coming from the user to be authenticated, and then calls the done callback supplying a parsedToken (with all its information in visible form) and the googleId.
The strategy also requires the Google client ID(s) inside the passed options.
An optional getGoogleCerts function can be specified to customize the way the Google certificates are retrieved, interesting e.g. in case a caching mechanism is needed. If not specified, the default mechanism will query the Google servers every time.
``js
var GoogleTokenStrategy = require('passport-google-id-token');
passport.use(new GoogleTokenStrategy({
clientID: GOOGLE_CLIENT_ID,
getGoogleCerts: optionalCustomGetGoogleCerts
},
function(parsedToken, googleId, done) {
User.findOrCreate({ googleId: googleId }, function (err, user) {
return done(err, user);
});
}
));
`
#### Authenticate Requests
Use passport.authenticate(), specifying the 'google-id-token' strategy, to authenticate requests.
`js`
app.post('/auth/google',
passport.authenticate('google-id-token'),
function (req, res) {
// do something with req.user
res.send(req.user? 200 : 401);
}
);
The post request to this route should include a JSON object with the key id_token set to the one the client received from Google (e.g. after successful Google+ sign-in).
#### About JWT validation
This library leverages node-jsonwebtoken for JWT token validation. An optional jwtOptions` can be specified to customize the way this validation is performed as per the documentation.
- Juanma Reyes
- Mike Nicholson
- Marco Sanson
- Michal Kubenka
- Tom Hoag
- Bence Ferdinandy
- Jonas Scheffner
(The MIT License)
Copyright (c) 2014-2018 Juan Manuel Reyes
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