Implement password protection

ios/Podfile.lock

@@ -95,6 +95,8 @@ PODS:
   - flutter_background_geolocation (4.16.11):
     - CocoaLumberjack (~> 3.8.5)
     - Flutter
+  - flutter_secure_storage (6.0.0):
+    - Flutter
   - GoogleAppMeasurement (11.13.0):
     - GoogleAppMeasurement/AdIdSupport (= 11.13.0)
     - GoogleUtilities/AppDelegateSwizzler (~> 8.1)
@@ -153,6 +155,9 @@ PODS:
     - nanopb/encode (= 3.30910.0)
   - nanopb/decode (3.30910.0)
   - nanopb/encode (3.30910.0)
+  - path_provider_foundation (0.0.1):
+    - Flutter
+    - FlutterMacOS
   - PromisesObjC (2.4.0)
   - PromisesSwift (2.4.0):
     - PromisesObjC (= 2.4.0)
@@ -173,7 +178,9 @@ DEPENDENCIES:
   - firebase_messaging (from `.symlinks/plugins/firebase_messaging/ios`)
   - Flutter (from `Flutter`)
   - flutter_background_geolocation (from `.symlinks/plugins/flutter_background_geolocation/ios`)
+  - flutter_secure_storage (from `.symlinks/plugins/flutter_secure_storage/ios`)
   - mobile_scanner (from `.symlinks/plugins/mobile_scanner/darwin`)
+  - path_provider_foundation (from `.symlinks/plugins/path_provider_foundation/darwin`)
   - quick_actions_ios (from `.symlinks/plugins/quick_actions_ios/ios`)
   - rate_my_app (from `.symlinks/plugins/rate_my_app/darwin`)
   - shared_preferences_foundation (from `.symlinks/plugins/shared_preferences_foundation/darwin`)
@@ -213,8 +220,12 @@ EXTERNAL SOURCES:
     :path: Flutter
   flutter_background_geolocation:
     :path: ".symlinks/plugins/flutter_background_geolocation/ios"
+  flutter_secure_storage:
+    :path: ".symlinks/plugins/flutter_secure_storage/ios"
   mobile_scanner:
     :path: ".symlinks/plugins/mobile_scanner/darwin"
+  path_provider_foundation:
+    :path: ".symlinks/plugins/path_provider_foundation/darwin"
   quick_actions_ios:
     :path: ".symlinks/plugins/quick_actions_ios/ios"
   rate_my_app:
@@ -241,11 +252,13 @@ SPEC CHECKSUMS:
   FirebaseSessions: eaa8ec037e7793769defe4201c20bd4d976f9677
   Flutter: e0871f40cf51350855a761d2e70bf5af5b9b5de7
   flutter_background_geolocation: defe705fe7c50b1be772e0d298ed3765fa17c022
+  flutter_secure_storage: 1ed9476fba7e7a782b22888f956cce43e2c62f13
   GoogleAppMeasurement: 0dfca1a4b534d123de3945e28f77869d10d0d600
   GoogleDataTransport: aae35b7ea0c09004c3797d53c8c41f66f219d6a7
   GoogleUtilities: 00c88b9a86066ef77f0da2fab05f65d7768ed8e1
   mobile_scanner: 9157936403f5a0644ca3779a38ff8404c5434a93
   nanopb: fad817b59e0457d11a5dfbde799381cd727c1275
+  path_provider_foundation: 080d55be775b7414fd5a5ef3ac137b97b097e564
   PromisesObjC: f5707f49cb48b9636751c5b2e7d227e43fba9f47
   PromisesSwift: 9d77319bbe72ebf6d872900551f7eeba9bce2851
   quick_actions_ios: 4b07fb49d8d8f3518d7565fbb7a91014067a7d82

lib/l10n/app_en.arb

@@ -28,7 +28,9 @@
   "trackingLabel": "Continuous tracking",
   "motionLabel": "Active movement",
   "advancedLabel": "Advanced settings",
+  "passwordLabel": "Password",
   "optimizationMessage": "To ensure reliable tracking, please disable battery optimization for this app.",
+  "passwordError": "Wrong password",
   "startAction": "Start service",
   "stopAction": "Stop service",
   "sosAction": "Send SOS"

lib/main_screen.dart

@@ -1,6 +1,7 @@
 import 'dart:developer' as developer;
 
 import 'package:flutter/material.dart';
+import 'package:traccar_client/password_service.dart';
 import 'package:traccar_client/preferences.dart';
 import 'package:flutter_background_geolocation/flutter_background_geolocation.dart' as bg;
 
@@ -93,13 +94,15 @@ class _MainScreenState extends State<MainScreen> {
               contentPadding: EdgeInsets.zero,
               title: Text(AppLocalizations.of(context)!.trackingLabel),
               value: trackingEnabled,
-              onChanged: (bool value) {
+              onChanged: (bool value) async {
+                if (await PasswordService.authenticate(context) && mounted) {
                   if (value) {
                     bg.BackgroundGeolocation.start();
                     _checkBatteryOptimizations(context);
                   } else {
                     bg.BackgroundGeolocation.stop();
                   }
+                }
               },
             ),
             if (stopDetection == false)
@@ -166,10 +169,12 @@ class _MainScreenState extends State<MainScreen> {
               children: [
                 FilledButton.tonal(
                   onPressed: () async {
+                    if (await PasswordService.authenticate(context) && mounted) {
                       await Navigator.push(context, MaterialPageRoute(builder: (_) => const SettingsScreen()));
                       setState(() {
                         stopDetection = Preferences.instance.getBool(Preferences.stopDetection);
                       });
+                    }
                   },
                   child: Text(AppLocalizations.of(context)!.settingsButton),
                 ),

lib/password_service.dart

@@ -0,0 +1,57 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:traccar_client/l10n/app_localizations.dart';
+
+class PasswordService {
+  static final FlutterSecureStorage _secureStorage = const FlutterSecureStorage();
+  static const String _passwordKey = 'password';
+
+  static Future<bool> authenticate(BuildContext context) async {
+    if (!await _secureStorage.containsKey(key: _passwordKey)) return true;
+    final controller = TextEditingController();
+    bool? result;
+    if (context.mounted) {
+      result = await showDialog<bool>(
+        context: context,
+        builder: (context) => AlertDialog(
+          content: TextField(
+            controller: controller,
+            autofocus: true,
+            obscureText: true,
+            decoration: InputDecoration(labelText: AppLocalizations.of(context)!.passwordLabel),
+          ),
+          actions: [
+            TextButton(
+              onPressed: () => Navigator.pop(context, false),
+              child: Text(AppLocalizations.of(context)!.cancelButton),
+            ),
+            TextButton(
+              onPressed: () async {
+                final password = await _secureStorage.read(key: _passwordKey);
+                if (context.mounted) {
+                  Navigator.pop(context, password == controller.text);
+                }
+              },
+              child: Text(AppLocalizations.of(context)!.okButton),
+            ),
+          ],
+        ),
+      );
+    }
+    if (result != true && context.mounted) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text(AppLocalizations.of(context)!.passwordError)),
+      );
+      return false;
+    }
+    return result == true;
+  }
+
+  static Future<void> setPassword(String password) async {
+    if (password.isNotEmpty) {
+      await _secureStorage.write(key: _passwordKey, value: password);
+    } else {
+      await _secureStorage.delete(key: _passwordKey);
+    }
+  }
+}

lib/settings_screen.dart

@@ -3,6 +3,7 @@ import 'dart:io';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_background_geolocation/flutter_background_geolocation.dart' as bg;
+import 'package:traccar_client/password_service.dart';
 import 'package:traccar_client/qr_code_screen.dart';
 import 'package:wakelock_partial_android/wakelock_partial_android.dart';
 
@@ -83,6 +84,33 @@ class _SettingsScreenState extends State<SettingsScreen> {
     }
   }
 
+  Future<void> _changePassword() async {
+    final controller = TextEditingController();
+    final result = await showDialog<bool>(
+      context: context,
+      builder: (context) => AlertDialog(
+        content: TextField(
+          controller: controller,
+          decoration: InputDecoration(labelText: AppLocalizations.of(context)!.passwordLabel),
+          obscureText: true,
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context, false),
+            child: Text(AppLocalizations.of(context)!.cancelButton),
+          ),
+          TextButton(
+            onPressed: () => Navigator.pop(context, true),
+            child: Text(AppLocalizations.of(context)!.saveButton),
+          ),
+        ],
+      ),
+    );
+    if (result == true) {
+      await PasswordService.setPassword(controller.text);
+    }
+  }
+
   Widget _buildListTile(String title, String key, bool isInt) {
     String? value;
     if (isInt) {
@@ -201,6 +229,11 @@ class _SettingsScreenState extends State<SettingsScreen> {
                 setState(() {});
               },
             ),
+          if (advanced)
+            ListTile(
+              title: Text(AppLocalizations.of(context)!.passwordLabel),
+              onTap: _changePassword,
+            ),
         ],
       ),
     );

pubspec.lock

@@ -203,6 +203,54 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.0.1"
+  flutter_secure_storage:
+    dependency: "direct main"
+    description:
+      name: flutter_secure_storage
+      sha256: "9cad52d75ebc511adfae3d447d5d13da15a55a92c9410e50f67335b6d21d16ea"
+      url: "https://pub.dev"
+    source: hosted
+    version: "9.2.4"
+  flutter_secure_storage_linux:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_linux
+      sha256: be76c1d24a97d0b98f8b54bce6b481a380a6590df992d0098f868ad54dc8f688
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.3"
+  flutter_secure_storage_macos:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_macos
+      sha256: "6c0a2795a2d1de26ae202a0d78527d163f4acbb11cde4c75c670f3a0fc064247"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.3"
+  flutter_secure_storage_platform_interface:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_platform_interface
+      sha256: cf91ad32ce5adef6fba4d736a542baca9daf3beac4db2d04be350b87f69ac4a8
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.2"
+  flutter_secure_storage_web:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_web
+      sha256: f4ebff989b4f07b2656fb16b47852c0aab9fed9b4ec1c70103368337bc1886a9
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  flutter_secure_storage_windows:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_windows
+      sha256: b20b07cb5ed4ed74fc567b78a72936203f587eba460af1df11281c9326cd3709
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.2"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -221,6 +269,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.20.2"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      sha256: f2c445dce49627136094980615a031419f7f3eb393237e4ecd97ac15dea343f3
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.7"
   leak_tracker:
     dependency: transitive
     description:
@@ -293,6 +349,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.9.1"
+  path_provider:
+    dependency: transitive
+    description:
+      name: path_provider
+      sha256: "50c5dd5b6e1aaf6fb3a78b33f6aa3afca52bf903a8a5298f53101fdaee55bbcd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.5"
+  path_provider_android:
+    dependency: transitive
+    description:
+      name: path_provider_android
+      sha256: d0d310befe2c8ab9e7f393288ccbb11b60c019c6b5afc21973eeee4dda2b35e9
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.17"
+  path_provider_foundation:
+    dependency: transitive
+    description:
+      name: path_provider_foundation
+      sha256: "4843174df4d288f5e29185bd6e72a6fbdf5a4a4602717eed565497429f179942"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
   path_provider_linux:
     dependency: transitive
     description:
@@ -514,6 +594,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.1.1"
+  win32:
+    dependency: transitive
+    description:
+      name: win32
+      sha256: "66814138c3562338d05613a6e368ed8cfb237ad6d64a9e9334be3f309acfca03"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.14.0"
   xdg_directories:
     dependency: transitive
     description:

pubspec.yaml

@@ -23,6 +23,7 @@ dependencies:
   shared_preferences_android: ^2.4.10
   wakelock_partial_android: ^1.0.0
   mobile_scanner: ^7.0.1
+  flutter_secure_storage: ^9.2.4
 
 dev_dependencies:
   flutter_test: