🐛 [firebae_auth] custom claims is null on windows desktop

[floyd-lewis]

Bug report

Describe the bug
A clear and concise description of what the bug is.
Custom claims was set for a user with a role using admin sdk in javascript.

When logging into the app On Web and Android, when the user logs in the app gets the custom claim. On windows the claims is null.

pubspec.yaml
firebase_core: ^2.23.0
cloud_firestore: ^4.13.2
firebase_auth: ^4.14.1
cloud_functions: ^4.5.5
firebase_storage: ^11.3.1

Using google_sign_in_dartio for windows

[floyd-lewis]

Some more information
I get the claims data by calling getIdTokenResult. The claims is null on windows desktop. However if I call getTokenData and then decode using jwt_decoder package it has the claims data. This works on android too.

[darshankawar]

@floyd-lewis Thanks for the report.
Can you elaborate on how are you setting the custom claims and then trying to retrieve it ? A code sample will also be helpful so that we can address it properly.

[floyd-lewis]

@floyd-lewis Thanks for the report. Can you elaborate on how are you setting the custom claims and then trying to retrieve it ? A code sample will also be helpful so that we can address it properly.

const email = 'xxxx@gmail.com';
admin.auth().getUserByEmail(email).then((user) => {
const uid = user.uid;

admin.auth().setCustomUserClaims(user.uid, {
    'role': 'CURATOR'
});

admin
    .auth()
    .getUser(uid)
    .then((userRecord) => {
        console.log('uid ' + uid);
        console.log(userRecord.customClaims);
    });

});

[floyd-lewis]

For retreival i modifies the code as below for it to work in flutter, Earlier I was using getIdTokenResult, which was returning a nulllfor claims. Please note that it only does not work for windows desktop

String? tokenStr =
await firebase_auth.FirebaseAuth.instance.currentUser!.getIdToken();

  Map<String, dynamic> decodedToken = JwtDecoder.decode(tokenStr!);
  var roleName = decodedToken['role'] ?? Role.LEARNER.name;

[floyd-lewis]

Old code which did not work on windows desktop
firebase_auth.IdTokenResult? idTokenResult = await firebase_auth
.FirebaseAuth.instance.currentUser
?.getIdTokenResult();

  var roleName = idTokenResult?.claims?['role'] ?? Role.LEARNER.name;

[darshankawar]

Thanks for the update. Upon verifying on windows machine, getting the same result as reported.

/cc @Lyokone

[Lyokone]

Opened an issue on the C++ repository for support: firebase/firebase-cpp-sdk#1494

[TarekkMA]

Will close this in favor of #11768.