disable FIDO2 on Chromebook

android/app/src/main/kotlin/com/yubico/authenticator/MainActivity.kt

@@ -494,6 +494,11 @@ class MainActivity : FlutterFragmentActivity() {
                         startActivity(Intent(ACTION_NFC_SETTINGS))
                         result.success(true)
                     }
+
+                    "isArc" -> {
+                        val regex = ".+_cheets|cheets_.+".toRegex()
+                        result.success(Build.DEVICE?.matches(regex) ?: false)
+                    }
                     else -> logger.warn("Unknown app method: {}", methodCall.method)
                 }
             }

android/app/src/main/kotlin/com/yubico/authenticator/device/DeviceManager.kt

@@ -61,7 +61,6 @@ class DeviceManager(
                     try {
                         Ctap2Session(it)
                         operationContexts.add(OperationContext.FidoPasskeys)
-                        operationContexts.add(OperationContext.FidoFingerprints)
                     } catch (e: Throwable) { // ignored
                     }
 

lib/android/app_methods.dart

@@ -53,6 +53,10 @@ Future<int> getAndroidSdkVersion() async {
   return await appMethodsChannel.invokeMethod('getAndroidSdkVersion');
 }
 
+Future<bool> getAndroidIsArc() async {
+  return await appMethodsChannel.invokeMethod('isArc');
+}
+
 Future<Color> getPrimaryColor() async {
   final value = await appMethodsChannel.invokeMethod('getPrimaryColor');
   return value != null ? Color(value) : defaultPrimaryColor;

lib/android/init.dart

@@ -27,6 +27,7 @@ import 'package:shared_preferences/shared_preferences.dart';
 import '../app/app.dart';
 import '../app/features.dart' as features;
 import '../app/logging.dart';
+import '../app/models.dart';
 import '../app/state.dart';
 import '../app/views/main_page.dart';
 import '../core/state.dart';
@@ -53,6 +54,8 @@ Future<Widget> initialize() async {
 
   _initLicenses();
 
+  final isArc = await getAndroidIsArc();
+
   return ProviderScope(
     overrides: [
       prefProvider.overrideWithValue(await SharedPreferences.getInstance()),
@@ -82,6 +85,12 @@ Future<Widget> initialize() async {
       ),
       androidSdkVersionProvider.overrideWithValue(await getAndroidSdkVersion()),
       androidNfcSupportProvider.overrideWithValue(await getHasNfc()),
+      supportedSectionsProvider.overrideWithValue(
+          [Section.home, Section.accounts, Section.passkeys]),
+      // this specifies the priority of sections to show when
+      // the connected YubiKey does not support current section
+      androidSectionPriority.overrideWithValue(
+          [Section.accounts, Section.passkeys, Section.home]),
       supportedThemesProvider.overrideWith(
         (ref) => ref.watch(androidSupportedThemesProvider),
       ),
@@ -102,6 +111,7 @@ Future<Widget> initialize() async {
               // Disable unimplemented feature
               ..setFeature(features.piv, false)
               ..setFeature(features.otp, false)
+              ..setFeature(features.fido, !isArc)
               ..setFeature(features.management, false);
           });
 

lib/android/state.dart

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022-2023 Yubico.
+ * Copyright (C) 2022-2024 Yubico.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -77,6 +77,8 @@ class NfcStateNotifier extends StateNotifier<bool> {
   }
 }
 
+final androidSectionPriority = Provider<List<Section>>((ref) => []);
+
 final androidSdkVersionProvider = Provider<int>((ref) => -1);
 
 final androidNfcSupportProvider = Provider<bool>((ref) => false);
@@ -104,8 +106,8 @@ final androidAppContextHandler =
     Provider<AndroidAppContextHandler>((ref) => AndroidAppContextHandler());
 
 CurrentSectionNotifier androidCurrentSectionNotifier(Ref ref) {
-  final notifier =
-      AndroidCurrentSectionNotifier(ref.watch(androidAppContextHandler));
+  final notifier = AndroidCurrentSectionNotifier(
+      ref.watch(androidSectionPriority), ref.watch(androidAppContextHandler));
   ref.listen<AsyncValue<YubiKeyData>>(currentDeviceDataProvider, (_, data) {
     notifier._notifyDeviceChanged(data.whenOrNull(data: ((data) => data)));
   }, fireImmediately: true);
@@ -113,10 +115,13 @@ CurrentSectionNotifier androidCurrentSectionNotifier(Ref ref) {
 }
 
 class AndroidCurrentSectionNotifier extends CurrentSectionNotifier {
+  final List<Section> _supportedSectionsByPriority;
   final AndroidAppContextHandler _appContextHandler;
 
-  AndroidCurrentSectionNotifier(this._appContextHandler)
-      : super(Section.accounts);
+  AndroidCurrentSectionNotifier(
+    this._supportedSectionsByPriority,
+    this._appContextHandler,
+  ) : super(Section.accounts);
 
   @override
   void setCurrentSection(Section section) {
@@ -131,22 +136,17 @@ class AndroidCurrentSectionNotifier extends CurrentSectionNotifier {
       return;
     }
 
-    // current section priority
-    final availableSections = [
-      Section.accounts,
-      Section.passkeys,
-      Section.home,
-    ].where(
+    final supportedSections = _supportedSectionsByPriority.where(
       (e) => e.getAvailability(data) == Availability.enabled,
     );
 
-    if (availableSections.contains(state)) {
+    if (supportedSections.contains(state)) {
       // the key supports current section
       _log.debug('Keeping current section because new key support $state');
       return;
     }
 
-    setCurrentSection(availableSections.firstOrNull ?? Section.home);
+    setCurrentSection(supportedSections.firstOrNull ?? Section.home);
   }
 }