flutter_desktop_webview_auth

Desktop webview auth

This package enables Firebase OAuth on desktop platforms via webview

⚠️ Maintenance status: not actively maintained

This package was built to fill a gap: OAuth sign-in flows for Flutter desktop apps, at a time when the official Firebase solutions had no desktop support.

It still works, and for some use cases it remains the nicest desktop OAuth experience available — but it is not integrated with the wider FlutterFire ecosystem, and Invertase is no longer actively developing it. We will keep the repository public and accept the occasional community PR, but there is no guaranteed maintenance, no roadmap, and no support commitment. Issues may go unanswered.

It's kept public because it's still useful as-is, and because it's a solid starting point for anyone wanting to build a pure-Dart auth implementation. If you depend on it, please pin your version and be prepared to fork.

Supported providers:

• Google
• Facebook
• Twitter

Installation

macOS setup

The recaptcha verification flow is done on the local server, and it requires that the app has the following in the Release.entitlements:

<key>com.apple.security.network.server</key>
<true/>

Linux setup

To display webview on Linux, WebKit2GTK development libraries are used, if you don't have it already installed:

Ubuntu:

apt install libwebkit2gtk-4.0-dev

Fedora:

dnf install webkit2gtk3-devel

Additionally, if Flutter is installed using snap, you might face issues compiling the app, to fix you would need to uninstall the snap version and install Flutter manually on Linux.

Windows setup

Make sure you are on latest stable channle of Flutter, and have installed the requirements as mentioned here.

Nothing extra is needed to get started on Windows.

Add dependency

flutter pub add desktop_webview_auth

Imports

import 'package:desktop_webview_auth/desktop_webview_auth.dart';
import 'package:desktop_webview_auth/google.dart';
import 'package:desktop_webview_auth/facebook.dart';
import 'package:desktop_webview_auth/twitter.dart';

Usage

• Configure OAuth providers in firebase console
• Create an instance of ProviderArgs

final googleSignInArgs = GoogleSignInArgs(
  clientId:
    '448618578101-sg12d2qin42cpr00f8b0gehs5s7inm0v.apps.googleusercontent.com',
  redirectUri:
    'https://react-native-firebase-testing.firebaseapp.com/__/auth/handler',
  scope: 'email',
)

• call DesktopWebviewAuth.signIn

try {
    final result = await DesktopWebviewAuth.signIn(args);

    print(result?.accessToken);
    print(result?.tokenSecret);
} catch (err) {
    // something went wrong
}

• create an instance of OAuthCredential and sign in

import 'package:firebase_auth/firebase_auth.dart';

final credential = GoogleAuthProvider.credential(accessToken: result.accessToken)

FirebaseAuth.instance.signInWithCredential(credential);