Sign in with Apple not passing through fullName

[RobSwish]

• Xcode version: Version 11.2.1 (11B53)
• Firebase SDK version: 6.13.0
• Firebase Component: Auth - Sign in with Apple

Problem

I have added "Sign in with Apple" to my app. It all works perfectly except it does not pass the name through when authenticating. I am asking for full name and email in my code.

request.requestedScopes = [.fullName, .email]

The Sign in with Apple UI does display a cross next to the name, I don't know if it is supposed to show a tick, I've tried tapping this and changing my name but it does not change to a tick.

I can confirm through debugging that the "displayName" property of the Firebase user is nil after creation.

Relevant Code:

request.requestedScopes = [.fullName, .email]

[rizafran]

Thanks for reporting, @RobSwish. I'll try to replicate this on my end and I'll let you know with any updates.

[rizafran]

For the Sign in with Apple UI, it might be an intended behavior that the cross icon displays next to the name, and not changing to a tick. You may check out the same UI here.

[rizafran]

Hi @RobSwish, I was able to replicate the issue you encountered, and this is an expected behavior. The fullName is not returned in Apple's ID token so that we can't use it as displayName directly. However, you may opt to get the fullName through "appleIDCredential.fullName" in didCompleteWithAuthorization delegate method, and update user's profile by yourselves.

Additionally, it is mentioned here that Apple only shares the address with apps the first time a user signs in.

[paulb777]

Going to close this, since there's no obvious actions for us. Feel free to follow-up if you have more questions.

[jlubeck]

The documentation here says that:

Usually, Firebase stores the display name the first time a user signs in with Apple, which you can get with Auth.auth().currentUser.displayName. However, if you previously used Apple to sign a user in to the app without using Firebase, Apple will not provide Firebase with the user's display name.

But this is not the case.

I was able to update my user based on @rizafran 's comment (thanks!) but that is not what the doc says. So either changing the docs or making the code do what the docs say would be nice (this last option would be preferred in my opinion!)

[morganchen12]

@renkelvin based on my understanding we should update the documentation here, not the SDK behavior. Is this correct?

[RobSwish]

Thanks a lot! You got back to me so quickly I didn't notice, sorry!

I do think that the default behaviour should be for Firebase to save the name if it can as this is what it does for the other sign in methods such as Facebook and Google.

But it's good to know I can get the name through the other way you have mentioned.

[morganchen12]

I talked to @renkelvin about this and he mentioned that the current behavior exists because Sign In with Apple's behavior is inconsistent with the other authentication providers (Sign In with Apple does not always return the user's name).

I don't think Firebase saving the name to the user by default is a good idea since it makes it easier to accidentally link the name to other identifiable information, which is against Apple's license agreement if the user has chosen to anonymize their sign in info.

Unless this proves to be a significant pain point during development, we're likely not going to change the Firebase SDK behavior, though we can add this as an opt-in automatic behavior in FirebaseUI (see https://github.com/firebase/FirebaseUI-iOS/issues/815).

[ghost]

@morganchen12 How is the fullName differs from the email address in this case?

If the app requested both fullName and Email request.requestedScopes = [.fullName, .email] and the user provided this information, why does firebase store only email as part of FirebaseUser object ?

Below is the relevant part from the agreement:

If a user has chosen to anonymize their user data as part of Sign In with Apple, You agree not to attempt to link such anonymized data with information that directly identifies the individual and that is obtained outside of Sign In with Apple without first obtaining user consent.

`

[brkeyal]

I've re-created the scenario where an Apple user is new and signs in for my app for the first time, and still, Firebase's user (FIRUser) held a null displayName. Definitely Apple provided the givenName and familyName on that login (on the appleID Credential), but Firebase just doesn't fetch it. Seems like a bug with Firebase.

[SwapnanilDhol]

I've re-created the scenario where an Apple user is new and signs in for my app for the first time, and still, Firebase's user (FIRUser) held a null displayName. Definitely Apple provided the givenName and familyName on that login (on the appleID Credential), but Firebase just doesn't fetch it. Seems like a bug with Firebase.

I have the same problem. I removed my app from the list of apps I use Apple Auth with but while signing in I still don't get back the name of the user.

[morganchen12]

Thanks all, I'll take another look at this issue.

[ParkingPal]

Hello, do we have an update on this issue? I'm an experiencing it, as well.

[kolbasan]

Hi, I am also having this issue. Is this being worked on?

[ParkingPal]

I'm not sure, but I was able to find a work around that appears to work. The name is available only on the first time authenticating with Apple. In the authorizationController method that is in the docs, take the variable appleIDCredential that is given, and grab both the first and last name. For me, I had variables that looked something like: firstName = appleIDCredential.fullName?.givenName

Once you get those names saved as variables, be sure you save them to the DB, as you will not be able to access them again. Hope this helps you out.

[Chrichton]

I am experiencing the same problem. But: When I run my app in the simulator, I get appleIDCredential.fullName each time, when I sign-in. But when I am using a real device, I don't get it ever.

Question: What does "The name is available only on the first time authenticating with Apple" mean exactly? Regards, Heiko

[morganchen12]

Question: What does "The name is available only on the first time authenticating with Apple" mean exactly?

It means you'll get the name from Sign in with Apple whenever Apple feels like giving it to you. Sign in with Apple is hostile to systems that try to save PII by design. If you want to guarantee an alias for your user, prompt them to input a display name.

[JeffersonSchuler]

I think the docs need to be updated to reflect the current behavior, or the behavior needs to be fixed. This issue has been open for quite awhile.

[Chrichton]

I do now know, what the solution to the problem is. It is explained brilliantly in Peter Friese's blog: https://peterfriese.dev/replicating-reminder-swiftui-firebase-part3/

1. When you authenticate for the first time, you get the name 100%. After that your app is linked to your iCloud account and you do not the name again. But you can unlink your app: As Peter Friese writes: "Unlinking your Apple ID from an app that uses Sign in with Apple Once you’ve signed in to your app, you cannot repeat the sign-in flow, which makes testing a bit of a challenge. To get back to the initial state, you need to disconnect your Apple ID from your app. Here is how:Go to https://appleid.apple.com and sign in using your Apple ID In the Security section, find Apps & Websites using Apple ID and click on Manage… You will see a pop-up dialog that shows you all apps that are connected to your Apple ID Managing apps using Apple ID. Click on the name of the app you want to disconnect The following dialog will tell you when you first started using your Apple ID with this application Click on Stop using Apple ID to disconnect this app from your Apple ID"

2. Now you will get the name again. You retrieve it via:

if let fullName = appleIDCredential.fullName { if let givenName = fullName.givenName, let familyName = fullName.familyName {

and via:

let changeRequest = user.createProfileChangeRequest() // (3) changeRequest.displayName = displayName changeRequest.commitChanges {

you tell Firebase to store the name into your profile. Whenever you sign-in to Firebase, Auth.auth().currentUser will now have your fullname.

For detailed information, please look into Peter Friese's Blog. Hopefully this helps and thanks to Peter Friese.

Best regards from Heiko

[JeffersonSchuler]

I would like to point out that the behavior is different for Firebase on the web. Using that framework the display name is provided.

[jamiedaniel]

I can’t get the above solution to work at all. Peter Friese has a great article, but I cannot get his solution to yield any positive results.

Anyone have a working example as of Swift 5.2?

[Chrichton]

I can’t get the above solution to work at all. Peter Friese has a great article, but I cannot get his solution to yield any positive results.

Anyone have a working example as of Swift 5.2?

Hi Jamie. I am using Swift 5.2. The solution by Peter Friese works perfectly for me.

1.. Did you unlink the appleid? 2. Did if let fullName = appleIDCredential.fullName { if let givenName = fullName.givenName, let familyName = fullName.familyName { Give you the fullName?

3. Did changeRequest.commitChanges Succeed ?

Best regards from Heiko

[ParkingPal]

I currently have it retrieving the name from an apple user and writing it to the database. Haven't fully tested the part of the code that saves it as Auth.auth().currentUser.displayName fully, yet. But, I believe I have that working, as well. I have my set up almost precisely like it is in the documentation for Sign in with Apple for Firebase.

On Sun, Apr 19, 2020 at 11:22 PM jamiedaniel [email protected] wrote:

I can’t get the above solution to work at all. Peter Friese has a great article, but I cannot get his solution to yield any positive results.

Anyone have a working example as of Swift 5.2?

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/firebase/firebase-ios-sdk/issues/4393#issuecomment-616299499, or unsubscribe https://github.com/notifications/unsubscribe-auth/AHW65MHNYIPLSEVFVTXOIUDRNPEYVANCNFSM4JRMENFQ .

-- ParkingPal, LLC

[jamiedaniel]

I can’t get the above solution to work at all. Peter Friese has a great article, but I cannot get his solution to yield any positive results. Anyone have a working example as of Swift 5.2?

Hi Jamie. I am using Swift 5.2. The solution by Peter Friese works perfectly for me.

1.. Did you unlink the appleid? 2. Did if let fullName = appleIDCredential.fullName { if let givenName = fullName.givenName, let familyName = fullName.familyName { Give you the fullName?

1. Did changeRequest.commitChanges Succeed ?

Best regards from Heiko

Yes I unlinked the appleid

I am not getting the display name

I’m not sure why but the app doesn’t register that I have logged in at all. Shouldn’t Firebase lost a new user in the Authentication tab?

[jamiedaniel]

I currently have it retrieving the name from an apple user and writing it to the database. Haven't fully tested the part of the code that saves it as Auth.auth().currentUser.displayName fully, yet. But, I believe I have that working, as well. I have my set up almost precisely like it is in the documentation for Sign in with Apple for Firebase. …

I’m trying to use this in another app as well.

Currently, in that app, I am not using swiftui, I am using firebaseauthui to generate the interfaces for me, and I am not able to snag the display name from that either.

I don’t want to fork it and possibly violate Apple’s design for this feature, but come one, something’s gotta give right.

Any ideas would be most helpful

[Chrichton]

Hi Jamie,

Yes a new user is listed in the authentication tab. So your problem is the registering.

        Auth.auth().signIn(with: credential) { (result, error) in

should provide you with an error

[jamiedaniel]

Ok I have it registering a user and writing to the database. I’m using real-time database because this is an older app when Firestore was in beta.

Anyway. I still do not see how to get the users name from the Sign In with Apple from the Oauth service provider....

The example was confusing for SwiftUI and I get lost when and where I should be asking for the name and how.

Any help will be appreciated.

[Chrichton]

Hi Jamie, here my code:

private func handleSignInWithApple() { let nonce = String.randomNonceString() currentNonce = nonce

    let appleIDProvider = ASAuthorizationAppleIDProvider()
    let request = appleIDProvider.createRequest()
    request.requestedScopes = [.fullName, .email]
    request.nonce = nonce.sha256
    
    let authorizationController = ASAuthorizationController(authorizationRequests: [request])
    authorizationController.delegate = self
    authorizationController.presentationContextProvider = self
    authorizationController.performRequests()
}

func authorizationController(controller: ASAuthorizationController, didCompleteWithAuthorization authorization: ASAuthorization) { if let appleIDCredential = authorization.credential as? ASAuthorizationAppleIDCredential { guard let nonce = currentNonce else { fatalError("Invalid state: A login callback was received, but no login request was sent.") } guard let appleIDToken = appleIDCredential.identityToken else { print("Unable to fetch identity token") return } guard let idTokenString = String(data: appleIDToken, encoding: .utf8) else { print("Unable to serialize token string from data: (appleIDToken.debugDescription)") return } // Initialize a Firebase credential. let credential = OAuthProvider.credential(withProviderID: "apple.com", idToken: idTokenString, rawNonce: nonce)

        // Sign in with Firebase.
        Auth.auth().signIn(with: credential) { (result, error) in
            if error == nil,
                let fullName = appleIDCredential.fullName,
                let givenName = fullName.givenName,
                let familyName = fullName.familyName {
                    let displayName = "\(givenName) \(familyName)"
                    self.updateDisplayName(displayName: displayName) { result in
                        switch result {
                            case .success(let user): self.handleAuthResultCompletion(user: user, error: nil)
                            case .failure(let error): self.handleAuthResultCompletion(user: nil, error: error)
                        }
                    }
            } else {
                self.handleAuthResultCompletion(user: result?.user, error: error)
            }
        }}
    }

func updateDisplayName(displayName: String, completionHandler: @escaping (Result<User, Error>) -> Void) { if let user = Auth.auth().currentUser { let changeRequest = user.createProfileChangeRequest() changeRequest.displayName = displayName changeRequest.commitChanges { error in if let error = error { completionHandler(.failure(error)) } else { if let updatedUser = Auth.auth().currentUser { print("Successfully updated display name for user [(user.uid)] to [(updatedUser.displayName ?? "(empty)")]") completionHandler(.success(updatedUser)) } } } } }

I hope, that helps

[jamiedaniel]

Chrichton thanks for the example. I think I am doing something different. I used a custom "canned" login from FirebaseAuthUI as you can see from this code. Here is how I am doing the authentication. The "MyCustomAuthPickerController" all it does is allow me to put a background that I control for the login button picker list from the Authentication Providers. The code for the main ViewController (login services) follows. Feel free to explain where I went wrong ( this was originally written in 2018):

` // // ViewController.swift

import UIKit import Firebase import FirebaseAuth import FirebaseUI import AuthenticationServices

class ViewController: UIViewController, FUIAuthDelegate {

var ref: DatabaseReference!
var databaseHandle: DatabaseHandle!
var userID = ""
var userTokens = ""
var theUser: Firebase.User?

func authUI(_ authUI: FUIAuth, didSignInWith user: FirebaseAuth.User?, error: Error?) {
    if error != nil {
		print("***************************")
        print("There was an error with a login. Error description follows")
        print("***************************")
        print(error?.localizedDescription)
        print("***************************")
    } else {
        
		// add user information to the database
        ref.child("users").child((Auth.auth().currentUser?.uid)!).updateChildValues(["email" : Auth.auth().currentUser?.email! as Any])
        ref.child("users").child((Auth.auth().currentUser?.uid)!).updateChildValues(["provider" : Auth.auth().currentUser?.providerID as Any])
        let name = Auth.auth().currentUser?.displayName
        let splitName = name?.components(separatedBy: " ")
        ref.child("users").child((Auth.auth().currentUser?.uid)!).updateChildValues(["firstname" : splitName?.first ?? ""])
        ref.child("users").child((Auth.auth().currentUser?.uid)!).updateChildValues(["lastname" : splitName?.last ?? ""])
        
        UserDefaults.standard.set(Auth.auth().currentUser?.uid, forKey: Constants.NSUserDefaultsKeys.USER_KEY)
        
        self.loadDashboard()
    }
}

override func viewDidLoad() {
    super.viewDidLoad()
    
    configureDatabase()
	
    checkLoggedIn() // Check if there is a user logged in.
    
}

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
}

override func viewDidDisappear(_ animated: Bool) {
    super.viewDidDisappear(animated)
}

func checkLoggedIn() {
    Auth.auth().addStateDidChangeListener{ auth, user in
        if user != nil {
            self.userID = (user?.uid)!
            self.theUser = user
            UserDefaults.standard.set(Auth.auth().currentUser?.uid, forKey: Constants.NSUserDefaultsKeys.USER_KEY)
            
            self.loadDashboard()
            
        } else {
            self.login()
        }
    }
}

//MARK: Load the dashboard after authentication
func loadDashboard() {
    // Load dashboard
    if theUser != nil {
        let dashboardViewController = self.storyboard?.instantiateViewController(withIdentifier: "DashTabBarController")
        dashboardViewController?.modalPresentationStyle = UIModalPresentationStyle.fullScreen
        self.present(dashboardViewController!, animated: true, completion: nil)
    }
}

func login() {
    
    let authUI = FUIAuth.init(uiWith: Auth.auth())
    let providers: [FUIAuthProvider] = [
        FUIGoogleAuth(),
        FUIEmailAuth(),
        FUIOAuth.appleAuthProvider()
    ]
    
    authUI?.providers = providers
    authUI?.delegate = self
    
    
    let authViewController = authUI?.authViewController()
    authViewController?.modalPresentationStyle = .fullScreen
    self.present(authViewController!, animated: false, completion: nil)
    
}

func authPickerViewController(forAuthUI authUI: FUIAuth) -> FUIAuthPickerViewController {
    return MyCustomAuthPickerViewController(authUI: authUI)
}

func configureDatabase() {
    ref = Database.database().reference()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}

func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any]) -> Bool {
    let sourceApplication = options[UIApplicationOpenURLOptionsKey.sourceApplication] as! String?
    if FUIAuth.defaultAuthUI()?.handleOpen(url, sourceApplication: sourceApplication) ?? false {
        return true
    }
    return false
}

} `

[erhandemirci]

Hi @RobSwish, I was able to replicate the issue you encountered, and this is an expected behavior. The fullName is not returned in Apple's ID token so that we can't use it as displayName directly. However, you may opt to get the fullName through "appleIDCredential.fullName" in didCompleteWithAuthorization delegate method, and update user's profile by yourselves.

Additionally, it is mentioned here that Apple only shares the address with apps the first time a user signs in.

appleIDCredential.fullName worked well.