🐛 [FirebaseAuth] Still logged in after app uninstallation

[arnaudelub]

Bug report

Describe the bug
The user is still logged in after app uninstallation

Steps to reproduce

Steps to reproduce the behavior:

1. Install the app
2. Login
3. Uninstall app
4. Resinstall app and user will still be logged in but the token is not available anymore

Expected behavior

Flutter doctor

Run flutter doctor and paste the output below:

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flutter doctor -v
[✓] Flutter (Channel beta, 1.24.0-10.2.pre, on Mac OS X 10.15.7 19H114 darwin-x64, locale en-ES)
    • Flutter version 1.24.0-10.2.pre at /Users/arnauddelubac/Development/flutter
    • Framework revision 022b333a08 (8 weeks ago), 2020-11-18 11:35:09 -0800
    • Engine revision 07c1eed46b
    • Dart version 2.12.0 (build 2.12.0-29.10.beta)

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.0)
    • Android SDK at /Users/arnauddelubac/Library/Android/sdk
    • Platform android-30, build-tools 30.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.6)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 11.6, Build version 11E708
    • CocoaPods version 1.10.0

[✓] Android Studio (version 4.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] VS Code (version 1.52.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.18.1

[✓] Connected device (1 available)
    • Arnaud’s iPhone (mobile) • 00008030-0005399A3EDB802E • ios • iOS 13.5.1

• No issues found!

---

Flutter dependencies

Run flutter pub deps -- --style=compact and paste the output below:

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Dart SDK 2.12.0-29.10.beta
Flutter SDK 1.24.0-10.2.pre
hero 1.1.2+29

dependencies:
- auto_route 0.6.9 [flutter meta]
- bubble_tab_indicator 0.1.4 [flutter]
- cached_network_image 2.4.1 [flutter flutter_cache_manager octo_image]
- carousel_slider 2.3.1 [flutter]
- cloud_firestore 0.14.4 [flutter meta quiver firebase_core firebase_core_platform_interface cloud_firestore_platform_interface cloud_firestore_web]
- cupertino_icons 0.1.3
- dartz 0.9.2
- date_util 0.1.4
- easy_localization 2.3.3 [flutter intl shared_preferences args path flutter_localizations]
- file_picker 2.1.0 [flutter flutter_web_plugins flutter_plugin_android_lifecycle plugin_platform_interface]
- firebase_analytics 6.3.0 [meta flutter firebase_core firebase_analytics_web firebase_analytics_platform_interface]
- firebase_auth 0.18.4+1 [meta firebase_core firebase_core_platform_interface firebase_auth_platform_interface firebase_auth_web flutter]
- firebase_core 0.5.3 [firebase_core_platform_interface flutter quiver meta firebase_core_web]
- firebase_dynamic_links 0.6.3 [flutter firebase_core]
- firebase_in_app_messaging 0.2.3 [meta flutter firebase_core]
- firebase_messaging 7.0.3 [meta flutter firebase_core]
- firebase_storage 5.2.0 [flutter firebase_core firebase_core_platform_interface firebase_storage_web firebase_storage_platform_interface quiver]
- flushbar 1.10.4 [flutter]
- flutter 0.0.0 [characters collection meta typed_data vector_math sky_engine]
- flutter_bloc 6.1.1 [flutter bloc provider]
- flutter_circular_chart 0.1.0 [flutter]
- flutter_facebook_login 3.0.0 [flutter collection]
- flutter_feather_icons 1.0.3 [flutter]
- flutter_rating_bar 3.2.0+1 [flutter]
- flutter_signin_button 1.1.0 [flutter font_awesome_flutter]
- flutter_swiper 1.1.6 [flutter transformer_page_view flutter_page_indicator]
- font_awesome_flutter 8.10.0 [flutter]
- freezed_annotation 0.12.0 [collection json_annotation meta]
- functional_widget_annotation 0.5.2
- geocoding 1.0.5 [flutter geocoding_platform_interface url_launcher]
- geoflutterfire 2.2.1 [flutter cloud_firestore rxdart]
- geolocator 6.1.13 [flutter geolocator_platform_interface]
- get_it 5.0.3 [async meta]
- google_fonts 1.1.1 [flutter http path_provider crypto pedantic]
- google_maps_flutter 1.0.6 [flutter flutter_plugin_android_lifecycle google_maps_flutter_platform_interface]
- google_sign_in 4.5.6 [google_sign_in_platform_interface flutter meta google_sign_in_web]
- image_cropper 1.3.1 [flutter]
- injectable 1.0.5 [get_it]
- json_annotation 3.1.1
- launch_review 2.0.0 [flutter]
- location 3.1.0 [flutter meta location_platform_interface location_web]
- package_info 0.4.3+2 [flutter]
- percent_indicator 2.1.8 [flutter]
- permission_handler 5.0.1+1 [flutter meta permission_handler_platform_interface]
- rxdart 0.24.1
- sign_in_with_apple 2.5.4 [meta flutter]
- skeleton_text 1.0.0 [flutter]
- uuid 2.2.2 [crypto convert]

dev dependencies:
- auto_route_generator 0.6.10 [build source_gen analyzer path build_runner auto_route]
- build_runner 1.10.11 [args async build build_config build_daemon build_resolvers build_runner_core code_builder collection crypto dart_style glob graphs http_multi_server io js logging meta mime path pedantic pool pub_semver pubspec_parse shelf shelf_web_socket stack_trace stream_transform timing watcher web_socket_channel yaml]
- flutter_test 0.0.0 [flutter test_api path fake_async clock stack_trace vector_math async boolean_selector characters charcode collection matcher meta source_span stream_channel string_scanner term_glyph typed_data]
- freezed 0.12.6 [analyzer build build_config meta source_gen freezed_annotation]
- injectable_generator 1.0.6 [build source_gen path glob analyzer injectable collection]
- json_serializable 3.5.1 [analyzer build build_config json_annotation meta path source_gen]
- lint 1.5.1

transitive dependencies:
- _fe_analyzer_shared 11.0.0 [meta]
- analyzer 0.40.4 [_fe_analyzer_shared args charcode cli_util collection convert crypto glob meta package_config path pub_semver source_span watcher yaml]
- args 1.6.0
- async 2.5.0-nullsafety.3 [collection]
- bloc 6.1.0 [meta]
- boolean_selector 2.1.0-nullsafety.3 [source_span string_scanner]
- build 1.5.2 [analyzer async convert crypto logging meta path glob]
- build_config 0.4.4 [checked_yaml json_annotation meta path pubspec_parse yaml]
- build_daemon 2.1.4 [built_collection built_value http_multi_server logging pedantic path pool shelf shelf_web_socket stream_transform watcher web_socket_channel]
- build_resolvers 1.4.4 [analyzer build crypto graphs logging meta path package_config pool pub_semver]
- build_runner_core 6.1.2 [async build build_config build_resolvers collection convert crypto glob graphs json_annotation logging meta path package_config pedantic pool timing watcher yaml]
- built_collection 4.3.2 [collection quiver]
- built_value 7.1.0 [built_collection collection fixnum quiver]
- characters 1.1.0-nullsafety.5
- charcode 1.2.0-nullsafety.3
- checked_yaml 1.0.2 [json_annotation source_span yaml]
- cli_util 0.2.0 [path]
- clock 1.1.0-nullsafety.3
- cloud_firestore_platform_interface 2.2.1 [flutter meta collection firebase_core plugin_platform_interface]
- cloud_firestore_web 0.2.1+2 [flutter flutter_web_plugins http_parser meta firebase_core firebase_core_web cloud_firestore_platform_interface js]
- code_builder 3.5.0 [built_collection built_value collection matcher meta]
- collection 1.15.0-nullsafety.5
- convert 2.1.1 [charcode typed_data]
- crypto 2.1.5 [collection convert typed_data]
- dart_style 1.3.10 [analyzer args path source_span]
- fake_async 1.2.0-nullsafety.3 [clock collection]
- ffi 0.1.3
- file 5.2.1 [intl meta path]
- firebase 7.3.3 [http http_parser js]
- firebase_analytics_platform_interface 1.0.3 [flutter meta]
- firebase_analytics_web 0.1.1 [flutter flutter_web_plugins firebase firebase_analytics_platform_interface meta]
- firebase_auth_platform_interface 2.1.4 [flutter meta firebase_core plugin_platform_interface]
- firebase_auth_web 0.3.2+3 [flutter flutter_web_plugins meta http_parser intl firebase_core firebase_core_web firebase_auth_platform_interface js]
- firebase_core_platform_interface 2.1.0 [flutter meta plugin_platform_interface quiver]
- firebase_core_web 0.2.1+1 [firebase_core_platform_interface flutter flutter_web_plugins meta js]
- firebase_storage_platform_interface 1.0.2 [flutter meta collection firebase_core plugin_platform_interface]
- firebase_storage_web 0.1.1+1 [async crypto firebase_core firebase_core_web firebase_storage_platform_interface flutter flutter_web_plugins http js meta]
- fixnum 0.10.11
- flutter_blurhash 0.5.0 [flutter meta]
- flutter_cache_manager 2.0.0 [flutter path_provider uuid http path sqflite pedantic clock file rxdart]
- flutter_localizations 0.0.0 [flutter intl characters collection meta path typed_data vector_math]
- flutter_page_indicator 0.0.3 [flutter]
- flutter_plugin_android_lifecycle 1.0.11 [flutter]
- flutter_web_plugins 0.0.0 [flutter js characters collection meta typed_data vector_math]
- geocoding_platform_interface 1.0.1+1 [flutter meta plugin_platform_interface]
- geolocator_platform_interface 1.0.8 [flutter meta plugin_platform_interface vector_math]
- glob 1.2.0 [async collection node_io path pedantic string_scanner]
- google_maps_flutter_platform_interface 1.0.5 [flutter meta plugin_platform_interface stream_transform]
- google_sign_in_platform_interface 1.1.2 [flutter meta quiver]
- google_sign_in_web 0.9.2 [google_sign_in_platform_interface flutter flutter_web_plugins meta js]
- graphs 0.2.0
- http 0.12.2 [http_parser path pedantic]
- http_multi_server 2.2.0 [async]
- http_parser 3.1.4 [charcode collection source_span string_scanner typed_data]
- intl 0.16.1 [path]
- io 0.3.4 [charcode meta path string_scanner]
- js 0.6.3-nullsafety.3
- location_platform_interface 1.0.1 [flutter meta plugin_platform_interface]
- location_web 1.0.0 [flutter flutter_web_plugins location_platform_interface http_parser meta js]
- logging 0.11.4
- matcher 0.12.10-nullsafety.3 [stack_trace]
- meta 1.3.0-nullsafety.6
- mime 0.9.7
- nested 0.0.4 [flutter]
- node_interop 1.2.1 [js]
- node_io 1.2.0 [file node_interop path]
- octo_image 0.3.0 [flutter flutter_blurhash]
- package_config 1.9.3 [path charcode]
- path 1.8.0-nullsafety.3
- path_provider 1.6.24 [flutter path_provider_platform_interface path_provider_macos path_provider_linux path_provider_windows]
- path_provider_linux 0.0.1+2 [path xdg_directories path_provider_platform_interface flutter]
- path_provider_macos 0.0.4+6 [flutter]
- path_provider_platform_interface 1.0.4 [flutter meta platform plugin_platform_interface]
- path_provider_windows 0.0.4+3 [path_provider_platform_interface meta path flutter ffi win32]
- pedantic 1.9.2 [meta]
- permission_handler_platform_interface 2.0.1 [flutter meta plugin_platform_interface]
- platform 2.2.1
- plugin_platform_interface 1.0.3 [meta]
- pool 1.4.0 [async stack_trace]
- process 3.0.13 [file intl meta path platform]
- provider 4.3.2+3 [collection flutter nested]
- pub_semver 1.4.4 [collection]
- pubspec_parse 0.1.5 [checked_yaml json_annotation pub_semver yaml]
- quiver 2.1.5 [matcher meta]
- shared_preferences 0.5.12+4 [meta flutter shared_preferences_platform_interface shared_preferences_linux shared_preferences_macos shared_preferences_web shared_preferences_windows]
- shared_preferences_linux 0.0.2+4 [file flutter meta path path_provider_linux shared_preferences_platform_interface]
- shared_preferences_macos 0.0.1+11 [shared_preferences_platform_interface flutter]
- shared_preferences_platform_interface 1.0.4 [meta flutter]
- shared_preferences_web 0.1.2+7 [shared_preferences_platform_interface flutter flutter_web_plugins meta]
- shared_preferences_windows 0.0.1+3 [shared_preferences_platform_interface flutter ffi file meta path path_provider_platform_interface path_provider_windows]
- shelf 0.7.9 [async collection http_parser path stack_trace stream_channel]
- shelf_web_socket 0.2.3 [shelf web_socket_channel stream_channel]
- sky_engine 0.0.99
- source_gen 0.9.9 [analyzer async build dart_style glob meta path pedantic source_span]
- source_span 1.8.0-nullsafety.4 [charcode collection path term_glyph]
- sqflite 1.3.2+1 [flutter sqflite_common path]
- sqflite_common 1.0.2+1 [synchronized path meta]
- stack_trace 1.10.0-nullsafety.6 [path]
- stream_channel 2.1.0-nullsafety.3 [async]
- stream_transform 1.2.0
- string_scanner 1.1.0-nullsafety.3 [charcode source_span]
- synchronized 2.2.0+2
- term_glyph 1.2.0-nullsafety.3
- test_api 0.2.19-nullsafety.6 [async boolean_selector collection meta path source_span stack_trace stream_channel string_scanner term_glyph matcher]
- timing 0.1.1+2 [json_annotation]
- transformer_page_view 0.1.6 [flutter]
- typed_data 1.3.0-nullsafety.5 [collection]
- url_launcher 5.7.10 [flutter url_launcher_platform_interface url_launcher_web url_launcher_linux url_launcher_macos url_launcher_windows]
- url_launcher_linux 0.0.1+4 [flutter]
- url_launcher_macos 0.0.1+9 [flutter]
- url_launcher_platform_interface 1.0.9 [flutter meta plugin_platform_interface]
- url_launcher_web 0.1.5+1 [url_launcher_platform_interface flutter flutter_web_plugins meta]
- url_launcher_windows 0.0.1+3 [flutter]
- vector_math 2.1.0-nullsafety.5
- watcher 0.9.7+15 [async path pedantic]
- web_socket_channel 1.1.0 [async crypto stream_channel]
- win32 1.7.4 [ffi]
- xdg_directories 0.1.2 [meta path process]
- yaml 2.2.1 [charcode collection string_scanner source_span]

---

[dackers86]

Hi @arnaudelub

This is appeared mid last year #2913.

Does updating the dependency resolve this issue?

Latest version for auth is 0.20.0+1 https://pub.dev/packages/firebase_auth/install

[arnaudelub]

i'll try that and let you know. Thank you for the reminder

[arnaudelub]

ok, i can't update firebase_auth because it's depending on firebase_core ^0.7.0 and i am using firebase_messaging as well, but last version is firebase_messaging 7.0.3 and it depends on firebase_core ^0.5.0+1.
I am not sure that overriding dependancy here is a good idea.

[markusaksli-nc]

I was able to repro this on the latest master 1.26.0-2.0.pre.313 with firebase_auth: ^0.20.0+1 using the official example (with #4635) and building a dev IPA. Deleting and then installing again didn't change the login state.

flutter doctor -v

[✓] Flutter (Channel master, 1.26.0-2.0.pre.313, on macOS 11.1 20C69 darwin-arm,
    locale en-GB)
    • Flutter version 1.26.0-2.0.pre.313 at
      /Users/nevercode/development/flutter_master
    • Framework revision 1cb0a24a46 (35 hours ago), 2021-01-12 21:39:27 -0800
    • Engine revision 10cee6abcb
    • Dart version 2.12.0 (build 2.12.0-214.0.dev)

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at /Users/nevercode/Library/Android/sdk
    • Platform android-30, build-tools 30.0.3
    • Java binary at: /Users/nevercode/Library/Application
      Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/201.6953283/Android
      Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build
      1.8.0_242-release-1644-b3-6915495)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.3, Build version 12C33
    • CocoaPods version 1.10.1

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.1)
    • Android Studio at /Users/nevercode/Library/Application
      Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/201.6953283/Android
      Studio.app/Contents
    • Flutter plugin can be installed from:
      � https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      � https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build
      1.8.0_242-release-1644-b3-6915495)

[✓] Connected device (2 available)
    • macOS (desktop) • macos  • darwin-arm64   • macOS 11.1 20C69 darwin-arm
    • Chrome (web)    • chrome • web-javascript • Google Chrome 87.0.4280.141

• No issues found!

@arnaudelub What did you mean exactly by the token not being available? As a side note the latest messaging version is actually firebase_messaging: ^8.0.0-dev.14 and I would recommend you take a look at upgrading to it. There are a lot of breaking changes but the stability and overall improvements are worth it.

[dackers86]

Hi @arnaudelub.

It is my understanding this issue comes from underlying Firebase iOS SDK as this is persists authentication to the keychain.

We ideally need to update the documentation for Flutterfire to explain this scenario.

[mikehardy]

This was noted in the react-native-firebase repo as well: invertase/react-native-firebase#4667 (comment)

Example iOS code in the react-native-firebase style (might need to be bent to fit here) that works around it @dackers86

Try putting this on your AppDelegate.m:

  NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    if (![defaults boolForKey:@"notFirstRun"]) {
        [defaults setBool:YES forKey:@"notFirstRun"];
        [defaults synchronize];
        [[FIRAuth auth] signOut:NULL];
   }

put it after

  if ([FIRApp defaultApp] == nil) {
    [FIRApp configure];
  }

[dackers86]

Thanks @mikehardy!