Firebase Authentication stopped showing identifier - firebase

I have a firebase project which uses Google And Github auth providers. For some reason, it has suddenly stopped showing emails of fresh users. It is the same in the app logic as well. (I am using a NextJS app)
I no longer have access to user's emails, which I used to send notifications. HELP!

Related

Not able to get the firebase token in Progressive Web Apps

I have a Progressive Web Apps project which is using firebase cloud messaging service for push notifications. It was working fine but since last month, I am not able to receive push notifications anymore.
I checked and found out that the firebase access token was not getting generated on the client side.
Method call - firebase.messaging().getToken()
which in turn hits the following api :
POST https://fcm.googleapis.com/fcm/connect/subscribe
But surprisingly, for one firebase account, I am able to generate an access token, but for another app, I am not able to generate the access token.
Click here for the error log in the chrome network tab
I should have got the access token by using firebase.messaging().getToken() just like I am getting in my other projects.

FirebaseAuthentication Plugin not updating local FireBase.Auth JS with signed in user

Background
I have an almost finished webapp already working with the following stack
Firebase
React/TypeScript
Context
I'm adding Capacitor to my WebApp so I have a native app where I can send push notifications, and have presence in App Store, Google Play Store. The application already works on its web version, so there is no rule (Real Time Database, FireStore, etc) problem, no credentials problems at all on its web version, all well tested.
Problem
I've added Authentication to my application via Firebase Authentication, which works well, and I have also connected the Native iOS version to it, as it's described in the documentation
Auth flows works fine, User/Password & Google sign up are working fine and actually triggering the methods like onIdTokenChange and OnAuthStateChange from the official Firebase Auth library, in both cases, iOS and WebApp, and also the OnAuthStateChange from the Capacitor plugin (in both clients too).
The problem is that the Firebase JS library remains somehow in a unauthenticated state, where any call to FireStore, Database, or Storage, ends up in "Permissions Denied" error (Only on iOS). Once the Token ID has changed, I can see that currentUser is NULL, and the "signed in user" is not propagating to the Firebase official library from the Capacitor Plugin.
Once I have connected the Capacitor Firebase Authentication plugin, I was expecting that the Firebase official JS library was going to be updated, I've also used Firebase Authentication with IndexedDB local persistence as follows (when being in Native) as follows:
export const Authentication = Capacitor.isNativePlatform() ? initializeAuth(FirebaseApp, {
persistence: indexedDBLocalPersistence
}) : getAuth(FirebaseApp);

Enabling Crashlytics with Firebase Management API

We are developing large number of customized Android and iOS applications for our customers. We have used Fabric to manage the crashes and Google Cloud Messaging to send push messages for the applications. We have now migrated all those applications to Google Firebase.
We are using Firebase Management REST API to create the applications into Firebase enabled projects from our PHP backend. For Android apps we use methods projects.androidApps.create and projects.androidApps.getConfig to get access to the application google-services.json. We include that to the build, which passes without errors and the push messages work without a problem. However, the Crashlytics side does not get enabled. In Firebase console there is only a wizard to set up a new Firebase app. When running it, it gives impression that Craslytics will get enabled, when the app starts using Firebase, but it is not.
Is there an API to enable the Crashlytics for an app? We can use REST or PHP based API in the backend. Also, if there is a client side API to awaken Crashlytics, we can use that too.
This is currently not possible, though with the new Crashlytics SDKs we are looking at ways of changing this behavior. In the future, as soon as we receive a crash event we will enable the Crashlytics dashboard. The timeline for this though, is unknown.

Firebase Phone Auth is not working in flutter app neither in iOS simulator nor in a real device

I have been trying and searching various methods to make Firebase Phone Auth to work in my flutter application. (There is an open issue talking about conflicts between Firebase Cloud Messaging & Firebase Phone Auth, but I am unsure if my issue is related to that. I do use Firebase Cloud Messaging which works perfectly fine.).
In iOS simulator, whenever I call FirebaseAuth.instance.verifyPhoneNumber, my app opens a web page for reCAPTCHA workflow, and returns back to the app. Then I see the error logs like below in verificationFailed callback. (It is expected to follow reCAPTCHA flow for iOS Simulator according to Firebase Phone Auth Doc)
flutter: Instance of 'AuthException'
flutter: {"error":{"code":403,"message":"Requests from this ios client application <empty> are blocked.","errors":[{"message":"Requests from this ios client application <empty> are blocked.","domain":"global","reason":"forbidden"}],"status":"PERMISSION_DENIED"}}
It is suspicious that error message is using <empty> as my application name, instead of my real app name (or default firebase app name which is __FIRAPP_DEFAULT), but I am unsure why that is happening.
In real iOS device, whenever I call FirebaseAuth.instance.verifyPhoneNumber, the app invokes verificationFailed callback again and I get the error with verifyPhoneNumberError as code and Token mismatch as error message. This is happening in both debug build as well as in release build.
I am using following SDK & library versions.
Flutter SDK = 1.12.13+hotfix.5
firebase_core = 0.4.3
firebase_auth = 0.15.4
firebase_messaging = 6.0.9
Has anyone been able to get Firebase Auth Phone auth working in iOS? I am stuck in this limbo state because I cannot seem to search any info online related to this. I have setup iOS APN, GoogleService-info.plist, Google Cloud Credentials multiple times so far with no luck. (Given that Firebase Cloud Messaging works perfectly fine, I doubt it is an issue with credentials or APN setup.)
Answering my own question since I figured out the root cause.
In Google Cloud Project that is connected to Firebase, I was able to find a set of API Keys that were created by Firebase.
https://console.cloud.google.com/apis/credentials
For each App you define and create in Firebase, a new API key will be auto-created in the API key section. In my case, there was one for 'iOS key (auto created by Firebase)' and another for 'Android key (auto created by Firebase)'.
Well, by default, they do not impose any restrictions and you see a yellow triangle next to the key. So I added restrictions to those keys so that they can only be useable in my app. This is done by setting Application restrictions with corresponding bundle id for iOS and another app id for Android within each API key detail page.
This restriction was actually the reason that Phone Auth has not been working in my apps. Once I reverted the change back to None, I no longer encountered Token mismatch or AuthException.
Ideally, I should restrict these API keys to my app only, but it seems like my Flutter app is unable to prove its identity/appId/bundleId to google services, and Google had been rejecting requests from my App. This must be why I was seeing Requests from this ios client application <empty> are blocked. error message.
For now, everything is working because there is no restriction, but I will need to figure out why my app and its id association is not working as expected sooner than later, so that I can add restriction back.

Authentication with Firebase in React Native apps

I have a React Native App in which I use Firebase for database and authentication. I use custom authentication with Firebase where I generate a token on my server side code and pass on the token to the client and the client authenticates itself using signInWithCustomToken method. Earlier, we could specify an expiry period for the token and I could use the same token again and again. This was then changed in a later version to have an expiry period of one hour after being issued and it was mentioned that the Firebase SDK will make sure to maintain connections and the user wouldn't need to do the authentication again and again. I recently saw that in v3.6.2, there was some fixes to the authentication for react native
Fixed an issue that prevented user authentication states from
persisting when using Firebase Authentication with React Native
versions 0.37 and higher.
I am using the latest v3.6.6 at the moment. I still see that the user is authenticated every now and then when the app is foregrounded. I wanted to know how does authentication with firebase in react native apps work. The user will put the app in the background at which point it would be suspended by the phone OS or even killed in some conditions. When the user put the app in foreground again, should I expect that the Firebase SDK would make sure that the connection to firebase stays on or would it authenticate with firebase again?

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