Google Sign-In endpoint doesn't return the user's name anymore

Question

I'm using Google Sign-In on my iOS app. Everything was working well until recently when I noticed the app no longer gets the user's name, only the email address is returned.

I am getting a token through the app that I am sending to my server, which used to fetch the full information by sending a request to this endpoint:

https://www.googleapis.com/oauth2/v1/tokeninfo?id_token=MYTOKEN

I'm getting this kind of answer now:

{

    "issuer": "https://accounts.google.com",
    "issued_to": "o37l8g.apps.googleusercontent.com",
    "audience": "o37l8g.apps.googleusercontent.com",
    "user_id": "113504",
    "expires_in": ​814,
    "issued_at": ​1452991611,
    "email": "[email protected]",
    "email_verified": true

}

I tried to use other endpoints, like https://www.googleapis.com/oauth2/v1/tokeninfo?access_token= and https://www.googleapis.com/oauth2/v1/userinfo?access_token=, but none of them worked.

I also tried with the playground but cannot find which endpoint to use, my scope is well defined and I see in the iOS app that all the permissions are requested, but somehow it still doesn't return the user's name... Any ideas?

Answer 1

You should use the access_token instead of the id_token, so you will be still able to query the tokeninfo endpoint to very your token using:
https://www.googleapis.com/oauth2/v1/tokeninfo?access_token=

But now you can also query other endpoints to access to other informations, like the name:
https://www.googleapis.com/plus/v1/people/me?access_token=

Check how you use the Google SignIn iOS SDK and make sure you are getting end sending to your server the access_token instead of the id_token.

example in Swift:

 func signIn(signIn: GIDSignIn!, didSignInForUser user: GIDGoogleUser!, withError error: NSError!) {
     let token = user.authentication.accessToken // YES
     let token = user.authentication.idToken // Maybe NO 
 ...