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javagoogle-app-engineoauthlinkedin-apitwitter-oauth

GAE federated login and Linkedin

Hi I follow the given example for federated authentication in GAE. Using Federated Authentication via OpenID in Google App Engine

In given example its provide the authentication of yahoo, google, myspace etc. I want to modify this example and provide the authentication of linkedin and twitter. Please tell me a way to do this.

Solution

  • GAE federated login uses OpenID protocol, which is supported by Yahoo, Google and Myspace. LinkedIn and Twitter do not support OpenID, instead they support OAuth.

    Note: the GAE Oauth docs explain how your GAE app can be an OAuth provider (= other apps gain access to your app on behalf of users). What you are looking for is your app acting as OAuth consumer: your app accesses 3rd party profiles (LinkedIn, Twitter) on behalf of the users.

    See pac4j-oauth OAuth client lib that enables you to authenticate users against various providers, including Google, Facebook, LinkedIn and Twitter. It also enables accessing user's profile.