CODEWITHSUNDEEP
androidfirebasegoogle-cloud-firestorefirebase-authenticationgoogle-cloud-functions
Azhar Husain Raeisi
Azhar Husain Raeisi

Reputation: 197

How to check firebase-auth user claims?

FATAL EXCEPTION: "Attempt to invoke virtual method 'boolean java.lang.Boolean.booleanValue()' on a null object reference"

below is the code

authStateListener = new FirebaseAuth.AuthStateListener() {
        @Override
        public void onAuthStateChanged(@NonNull final FirebaseAuth firebaseAuth) {
            FirebaseUser user = firebaseAuth.getCurrentUser();
            if (user != null) {
                user.getIdToken(false).addOnSuccessListener(new OnSuccessListener<GetTokenResult>() {
                    @Override
                    public void onSuccess(GetTokenResult result) {
                        boolean isDriver = (boolean) result.getClaims().get("driver");
                        boolean isStudent = (boolean) result.getClaims().get("verified");
                        if (isDriver) {
                            // Show driver UI.
                            showDriverUI();
                        }else if(isStudent) {
                            // Show student UI.
                            showStudentUI();
                        }else {
                            // Show regular user UI.
                            firebaseAuth.signOut();
                            Snackbar.make(login, "Please confirm your identity, contact KIU Transport Office", Snackbar.LENGTH_LONG).show();
                        }
                    }
                });



            } else {
                // User is signed out
                Log.d(TAG, "onAuthStateChanged:signed_out");
            }
        }
    };

I had also tried to set them to false by cloud-function onCreate trigger, here is cloud-function code

exports.defaultClaims = functions.auth.user().onCreate((user) => {

    const email = user.email; // The email of the user.

    return admin.setCustomUserClaims(user.uid, {
        admin: false,
        clerk: false,
        driver: false,
        verified: false
    }).then(function () {
        return {
            message: `Successfully default role has been added for ${email}`
        }
    }).catch(function (err) {
        return err;
    });

});

Upvotes: 0

Views: 1475

Answers (1)

Doug Stevenson
Doug Stevenson

Reputation: 317392

The error message is telling you that one of the values in the custom claims doesn't exist. Your code should check for null and check the type instead of blindly casting to a boolean:

Object driver = result.getClaims().get("driver");
if (driver != null && driver instanceof Boolean) {
    boolean isDriver = ((Boolean) driver).booleanValue();
}

Also, if you want to force refresh the ID token that contains any custom claims, you should pass true to getIdToken:

user.getIdToken(true)

Upvotes: 1

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