Firebase error: Permission denied. Unable to read/write from Firebase Database

Question

I need to give read/write access only to authenticated users, but it seems like Firebase is not recognizing that the user is authenticated.

After I sign in the user with email and password, I am assuming user is authenticated and should be allowed to read/write from database. However permission is denied.

Here is the code for sign in activity:

 firebaseAuth.signInWithEmailAndPassword(email, password) .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
        @Override
        public void onComplete(@NonNull Task<AuthResult> task) {
            //checking if success
            if(task.isSuccessful()){
                //display some message here
                // Toast.makeText(Register.this,"Successfully registered",Toast.LENGTH_LONG).show();


                sRef.authWithPassword(email,password,new Firebase.AuthResultHandler() {

                    @Override
                    public void onAuthenticated(AuthData authData) {
                        Toast.makeText(Register.this, user.getDisplayName()+" is authenticated",Toast.LENGTH_LONG).show();
                    }

                    @Override
                    public void onAuthenticationError(FirebaseError firebaseError) {
                    }
                });

                Intent i = new Intent(Register.this,MainActivity.class);

                startActivity(i);

            }else{
                //display some message here
                Toast.makeText(Register.this, task.getException().getMessage(),Toast.LENGTH_LONG).show();
            }

        }
    });

I want to use the default rule in firebase that allows only auth users to read/write from database:

{
 "rules": {
  ".read": "auth != null",
 ".write": "auth != null"
}
}

But when I change the rules as below my code is able to get read/write access to database.

{
"rules": {
".read": true,
".write":true
}
}

This is fine in testing, however I cannot continue with production with this method. Please help, how to authenticate a registered user to access database in Firebase.

None of the code you shared accesses the database, so it can't be raising that error yet. Please share the minimum, complete code that is needed to reproduce the problem. — Frank van Puffelen
Have you enable firbase sign in method like email/password or anonymous in auth section before login. — Dhaval Solanki
I did not share the code for accessing firebase database, as it is working but only when i change the rules to public. When I use the default rules, the permission is denied. — Abhinav Raja

Bob Snyder Bob Snyder · Accepted Answer · 2016-09-20T04:13:26

Your code is a mixture of API calls from the legacy 2.x.x. SDK, for example:

sRef.authWithPassword(email,password,new Firebase.AuthResultHandler()

and the new 9.x.x SDK:

firebaseAuth.signInWithEmailAndPassword()

The two SDKs are not compatible. You need to use or the other. The Upgrade Guide explains how to migrate from the legacy SDK to the new SDK.

You also need to use the Firebase console that corresponds to the SDK used: Legacy Console or new Firebase Console.

Firebase error: Permission denied. Unable to read/write from Firebase Database

1 Answers