Make features work on Linux

diff --git a/lib/main.dart b/lib/main.dart
index f6980be..5846366 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -3,9 +3,11 @@ import 'package:skylight_wallet/periodic_tasks.dart';
 import 'package:skylight_wallet/screens/privacy_policy.dart';
 import 'package:skylight_wallet/screens/terms_of_service.dart';
 import 'package:skylight_wallet/screens/unlock.dart';
+import 'package:skylight_wallet/services/notifications_service.dart';
 import 'package:skylight_wallet/services/shared_preferences_service.dart';
 import 'package:provider/provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'package:skylight_wallet/util/dirs.dart';
 import 'package:timeago/timeago.dart' as timeago;
 
 import 'package:skylight_wallet/models/fiat_rate_model.dart';
@@ -37,8 +39,11 @@ import 'package:skylight_wallet/util/logging.dart';
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
   timeago.setLocaleMessages('pt', timeago.PtBrMessages());
+  await createAppDir();
   TorService.sharedInstance.start();
-  registerPeriodicTasks();
+  await registerPeriodicTasks();
+  await NotificationService().init();
+
   cleanOldLogFiles();
 
   runApp(MyApp());
diff --git a/lib/models/wallet_model.dart b/lib/models/wallet_model.dart
index 36180c7..b96765a 100644
--- a/lib/models/wallet_model.dart
+++ b/lib/models/wallet_model.dart
@@ -8,6 +8,7 @@ import 'dart:ffi';
 import 'dart:io';
 import 'dart:isolate';
 import 'dart:math';
+import 'package:dart_date/dart_date.dart';
 import 'package:flutter/foundation.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:monero/monero.dart' as monero;
@@ -15,7 +16,7 @@ import 'package:monero/src/monero.dart';
 import 'package:monero/src/wallet2.dart';
 import 'package:http/http.dart' as http;
 
-import 'package:skylight_wallet/consts.dart';
+import 'package:skylight_wallet/services/notifications_service.dart';
 import 'package:skylight_wallet/services/shared_preferences_service.dart';
 import 'package:skylight_wallet/services/tor_service.dart';
 import 'package:skylight_wallet/util/formatting.dart';
@@ -24,6 +25,7 @@ import 'package:skylight_wallet/util/logging.dart';
 import 'package:skylight_wallet/util/socks_http.dart';
 import 'package:skylight_wallet/util/wallet.dart';
 import 'package:skylight_wallet/util/wallet_password.dart';
+import 'package:skylight_wallet/consts.dart' as consts;
 
 String generateHexString(int length) {
   final Random random = Random.secure();
@@ -132,7 +134,6 @@ class WalletModel with ChangeNotifier {
       .getLWSFWalletManager();
 
   Wallet2Wallet? _w2Wallet;
-
   Wallet2TransactionHistory? _w2TxHistory;
 
   late String _connectionAddress;
@@ -140,6 +141,7 @@ class WalletModel with ChangeNotifier {
   late bool _connectionUseTor;
   late bool _connectionUseSsl;
 
+  final _sessionStartedAt = DateTime.now().secondsSinceEpoch;
   var _hasAttemptedConnection = false;
   var _isConnected = false;
   var _isSynced = false;
@@ -262,8 +264,28 @@ class WalletModel with ChangeNotifier {
     }
 
     if (txCount > _txHistory.length || hasPendingTx) {
+      final txCountDiff = txCount - _txHistory.length;
+
       _txHistory = await _getFullTxHistory();
 
+      // Notify new transactions on desktop
+      if ((Platform.isLinux || Platform.isWindows) &&
+          _isConnected &&
+          _isSynced &&
+          _syncedHeight is int &&
+          _syncedHeight! > 0) {
+        for (int i = 0; i < txCountDiff; i++) {
+          final tx = _txHistory[i];
+
+          if (tx.direction == consts.txDirectionIncoming &&
+              tx.timestamp > _sessionStartedAt) {
+            NotificationService().showIncomingTxNotification(tx.amount);
+            // Only notify one new transaction
+            break;
+          }
+        }
+      }
+
       if (persistCount) {
         await persistTxHistoryCount();
       }
@@ -1103,7 +1125,7 @@ class WalletModel with ChangeNotifier {
 
     final TxDetails txDetails = TxDetails(
       index: null,
-      direction: txDirectionOutgoing,
+      direction: consts.txDirectionOutgoing,
       hash: tx.txid(''),
       amount: doubleAmountFromInt(tx.amount()),
       fee: doubleAmountFromInt(tx.fee()),
diff --git a/lib/periodic_tasks.dart b/lib/periodic_tasks.dart
index 7fc808b..42a75b4 100644
--- a/lib/periodic_tasks.dart
+++ b/lib/periodic_tasks.dart
@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:skylight_wallet/models/wallet_model.dart';
 import 'package:skylight_wallet/services/notifications_service.dart';
 import 'package:skylight_wallet/services/shared_preferences_service.dart';
@@ -87,46 +89,51 @@ void _callbackDispatcher() {
   });
 }
 
-Future<void> registerTxNotifierTaskIfEnabled() async {
-  final notificationsIsAllowed = await NotificationService().promptPermission();
-
-  if (!notificationsIsAllowed) {
-    await SharedPreferencesService.set<bool>(
-      SharedPreferencesKeys.notificationsEnabled,
-      false,
-    );
-    return;
-  }
-
+Future<void> registerTxNotifierTaskIfAllowed() async {
   final notificationsEnabled =
       await SharedPreferencesService.get<bool>(
         SharedPreferencesKeys.notificationsEnabled,
       ) ??
       false;
 
-  if (notificationsEnabled) {
-    // This will replace an existing task, so we can prevent code from eg an old
-    // release from remaining forever.
-    await Workmanager().cancelByUniqueName(PeriodicTasks.txNotifier);
-    await Workmanager().registerPeriodicTask(
-      "New transactions check",
-      PeriodicTasks.txNotifier,
-      frequency: Duration(minutes: 15),
-      constraints: Constraints(
-        networkType: NetworkType.connected,
-        requiresBatteryNotLow: true,
-      ),
+  if (!notificationsEnabled) {
+    return;
+  }
+
+  final notificationsAreAllowed = await NotificationService()
+      .promptPermission();
+
+  if (!notificationsAreAllowed) {
+    await SharedPreferencesService.set<bool>(
+      SharedPreferencesKeys.notificationsEnabled,
+      false,
     );
+    return;
   }
+
+  // Cancelling will replace an existing task, so we can prevent code from an
+  // old release from remaining forever.
+  await Workmanager().cancelByUniqueName(PeriodicTasks.txNotifier);
+  await Workmanager().registerPeriodicTask(
+    "New transactions check",
+    PeriodicTasks.txNotifier,
+    frequency: Duration(minutes: 15),
+    constraints: Constraints(
+      networkType: NetworkType.connected,
+      requiresBatteryNotLow: true,
+    ),
+  );
 }
 
-Future<void> unregisterTxNotifierTask() async {
+Future<void> unregisterPeriodicTasks() async {
   await Workmanager().cancelByUniqueName(PeriodicTasks.txNotifier);
 }
 
 Future<void> registerPeriodicTasks() async {
-  await NotificationService().init();
-  Workmanager().initialize(_callbackDispatcher, isInDebugMode: true);
+  if (!(Platform.isAndroid || Platform.isIOS)) {
+    return;
+  }
 
-  await registerTxNotifierTaskIfEnabled();
+  Workmanager().initialize(_callbackDispatcher, isInDebugMode: true);
+  await registerTxNotifierTaskIfAllowed();
 }
diff --git a/lib/screens/receive.dart b/lib/screens/receive.dart
index ca34dfc..02a3ff5 100644
--- a/lib/screens/receive.dart
+++ b/lib/screens/receive.dart
@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:skylight_wallet/l10n/app_localizations.dart';
@@ -22,7 +24,9 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
   void initState() {
     super.initState();
 
-    _setBrightnessToMax();
+    if (Platform.isAndroid || Platform.isIOS) {
+      _setBrightnessToMax();
+    }
   }
 
   @override
diff --git a/lib/screens/send.dart b/lib/screens/send.dart
index 9a805d2..a2dc580 100644
--- a/lib/screens/send.dart
+++ b/lib/screens/send.dart
@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_svg/flutter_svg.dart';
@@ -456,11 +458,12 @@ class _SendScreenState extends State<SendScreen> {
                             onTap: _pasteAddressFromClipboard,
                             child: Icon(Icons.paste),
                           ),
-                          GestureDetector(
-                            onTap: () =>
-                                Navigator.pushNamed(context, '/scan_qr'),
-                            child: Icon(Icons.qr_code),
-                          ),
+                          if (Platform.isAndroid || Platform.isIOS)
+                            GestureDetector(
+                              onTap: () =>
+                                  Navigator.pushNamed(context, '/scan_qr'),
+                              child: Icon(Icons.qr_code),
+                            ),
                           GestureDetector(
                             onTap: _showContactPicker,
                             child: Icon(Icons.contacts_outlined),
diff --git a/lib/screens/settings.dart b/lib/screens/settings.dart
index 847ac6d..b2acc68 100644
--- a/lib/screens/settings.dart
+++ b/lib/screens/settings.dart
@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:flutter/material.dart';
 import 'package:skylight_wallet/util/logging.dart';
 import 'package:provider/provider.dart';
@@ -79,14 +81,14 @@ class _SettingsScreenState extends State<SettingsScreen> {
           SharedPreferencesKeys.notificationsEnabled,
           true,
         );
-        await registerTxNotifierTaskIfEnabled();
+        await registerTxNotifierTaskIfAllowed();
       }
     } else {
       await SharedPreferencesService.set<bool>(
         SharedPreferencesKeys.notificationsEnabled,
         false,
       );
-      await unregisterTxNotifierTask();
+      await unregisterPeriodicTasks();
     }
   }
 
@@ -367,19 +369,20 @@ class _SettingsScreenState extends State<SettingsScreen> {
                 Switch(value: _appLockEnabled, onChanged: _setAppLockEnabled),
               ],
             ),
-            Row(
-              mainAxisAlignment: MainAxisAlignment.spaceBetween,
-              children: [
-                Text(
-                  i18n.settingsNotifyNewTxsLabel,
-                  style: TextStyle(fontSize: 18),
-                ),
-                Switch(
-                  value: _newTxNotificationsEnabled,
-                  onChanged: _setTxNotificationsEnabled,
-                ),
-              ],
-            ),
+            if (Platform.isAndroid || Platform.isIOS)
+              Row(
+                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                children: [
+                  Text(
+                    i18n.settingsNotifyNewTxsLabel,
+                    style: TextStyle(fontSize: 18),
+                  ),
+                  Switch(
+                    value: _newTxNotificationsEnabled,
+                    onChanged: _setTxNotificationsEnabled,
+                  ),
+                ],
+              ),
             Row(
               mainAxisAlignment: MainAxisAlignment.spaceBetween,
               children: [
diff --git a/lib/services/notifications_service.dart b/lib/services/notifications_service.dart
index c587a5f..e7305a1 100644
--- a/lib/services/notifications_service.dart
+++ b/lib/services/notifications_service.dart
@@ -9,7 +9,14 @@ class NotificationService {
       '@mipmap/ic_launcher',
     );
 
-    const initSettings = InitializationSettings(android: initSettingsAndroid);
+    const initSettingsLinux = LinuxInitializationSettings(
+      defaultActionName: 'Open wallet',
+    );
+
+    const initSettings = InitializationSettings(
+      android: initSettingsAndroid,
+      linux: initSettingsLinux,
+    );
 
     await notificationsPlugin.initialize(initSettings);
   }
diff --git a/lib/services/tor_service.dart b/lib/services/tor_service.dart
index 682ca86..647817a 100644
--- a/lib/services/tor_service.dart
+++ b/lib/services/tor_service.dart
@@ -2,8 +2,8 @@ import 'dart:async';
 import 'dart:io';
 
 import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:skylight_wallet/util/dirs.dart';
 import 'package:skylight_wallet/util/logging.dart';
-import 'package:path_provider/path_provider.dart';
 import 'package:tor_ffi_plugin/tor_ffi_plugin.dart';
 
 final pTorService = Provider((_) => TorService.sharedInstance);
@@ -47,7 +47,7 @@ class TorService {
   /// Returns a Future that completes when the Tor service has started.
   Future<void> start() async {
     _tor ??= Tor.instance;
-    _torDataDirPath ??= (await getApplicationDocumentsDirectory()).path;
+    _torDataDirPath ??= (await getAppDir()).path;
 
     // Start the Tor service.
     try {
diff --git a/lib/util/dirs.dart b/lib/util/dirs.dart
index 74dec35..577c5e2 100644
--- a/lib/util/dirs.dart
+++ b/lib/util/dirs.dart
@@ -1,11 +1,27 @@
 import 'dart:io';
 
 import 'package:path_provider/path_provider.dart';
-import 'package:skylight_wallet/consts.dart' as consts;
 
-Future<Directory> getTorDataDir() async {
-  final documentsDirPath = (await getApplicationDocumentsDirectory());
-  final torDataDirName = consts.torDataDirName;
-  final torDataDir = Directory('${documentsDirPath.path}/$torDataDirName');
-  return torDataDir;
+Future<void> createAppDir() async {
+  final appDir = await getAppDir();
+  if (!await appDir.exists()) {
+    await appDir.create(recursive: true);
+  }
+}
+
+Future<Directory> getAppDir() async {
+  final documentsDir = await getApplicationDocumentsDirectory();
+  var appDir = documentsDir;
+
+  if (Platform.isLinux) {
+    final homeDir = Platform.environment['HOME'];
+
+    if (homeDir != null) {
+      appDir = Directory('$homeDir/.skylight_wallet');
+    } else {
+      throw Exception('HOME environment variable is not set');
+    }
+  }
+
+  return appDir;
 }
diff --git a/lib/util/logging.dart b/lib/util/logging.dart
index dbdf10d..0e81c03 100644
--- a/lib/util/logging.dart
+++ b/lib/util/logging.dart
@@ -2,6 +2,7 @@ import 'dart:io';
 import 'package:flutter/foundation.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:skylight_wallet/services/shared_preferences_service.dart';
+import 'package:skylight_wallet/util/dirs.dart';
 
 enum LogLevel { info, warn, error }
 
@@ -13,10 +14,8 @@ Future<File> _getLogFile() async {
   // Get external storage directory for Android, or documents directory for iOS
   if (Platform.isAndroid) {
     directory = await getExternalStorageDirectory();
-  } else if (Platform.isIOS) {
-    directory = await getApplicationDocumentsDirectory();
   } else {
-    directory = await getApplicationDocumentsDirectory();
+    directory = await getAppDir();
   }
 
   if (directory == null) {
@@ -43,9 +42,9 @@ Future<void> cleanOldLogFiles() async {
     if (Platform.isAndroid) {
       directory = await getExternalStorageDirectory();
     } else if (Platform.isIOS) {
-      directory = await getApplicationDocumentsDirectory();
+      directory = await getAppDir();
     } else {
-      directory = await getApplicationDocumentsDirectory();
+      directory = await getAppDir();
     }
 
     if (directory == null) {
diff --git a/lib/util/wallet.dart b/lib/util/wallet.dart
index a7425ea..648a4e4 100644
--- a/lib/util/wallet.dart
+++ b/lib/util/wallet.dart
@@ -1,8 +1,8 @@
-import 'package:path_provider/path_provider.dart';
 import 'package:skylight_wallet/consts.dart' as consts;
+import 'package:skylight_wallet/util/dirs.dart';
 
 Future<String> getWalletPath([String? walletFileName]) async {
-  var path = (await getApplicationDocumentsDirectory()).path;
+  var path = (await getAppDir()).path;
   String walletName = walletFileName ?? consts.walletFileName;
   path = '$path/$walletName';
   return path;
diff --git a/linux/CMakeLists.txt b/linux/CMakeLists.txt
index bfd34b0..2758fb1 100644
--- a/linux/CMakeLists.txt
+++ b/linux/CMakeLists.txt
@@ -44,6 +44,7 @@ function(APPLY_STANDARD_SETTINGS TARGET)
   target_compile_options(${TARGET} PRIVATE -Wall -Werror)
   target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
   target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+  target_compile_options(${TARGET} PRIVATE -Wno-deprecated)
 endfunction()
 
 # Flutter library and tool build rules.
@@ -112,6 +113,14 @@ install(DIRECTORY "${NATIVE_ASSETS_DIR}"
    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
    COMPONENT Runtime)
 
+# Install monero_libwallet2_api_c.so
+set(MONERO_LIB "${CMAKE_CURRENT_SOURCE_DIR}/monero_libwallet2_api_c.so")
+if(EXISTS "${MONERO_LIB}")
+  install(FILES "${MONERO_LIB}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
+
 # Fully re-copy the assets directory on each build to avoid having stale files
 # from a previous install.
 set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
diff --git a/linux/fix_execstack.sh b/linux/fix_execstack.sh
new file mode 100755
index 0000000..b814be6
--- /dev/null
+++ b/linux/fix_execstack.sh
@@ -0,0 +1,80 @@
+#!/bin/bash
+# Script to fix executable stack flag in monero_libwallet2_api_c.so
+# This should be run whenever monero_libwallet2_api_c.so file is updated.
+
+LIB_PATH="$(dirname "$0")/monero_libwallet2_api_c.so"
+
+if [ ! -f "$LIB_PATH" ]; then
+    echo "Error: $LIB_PATH not found"
+    exit 1
+fi
+
+python3 << PYTHON_SCRIPT
+import struct
+import sys
+
+lib_path = "$LIB_PATH"
+
+# Read the ELF file
+with open(lib_path, 'rb') as f:
+    data = bytearray(f.read())
+
+# Check ELF magic
+if data[:4] != b'\x7fELF':
+    print('Error: Not an ELF file')
+    sys.exit(1)
+
+# Get ELF class (32 or 64 bit)
+elf_class = data[4]
+if elf_class == 1:  # 32-bit
+    phoff = struct.unpack('<I', data[28:32])[0]
+    phentsize = struct.unpack('<H', data[42:44])[0]
+    phnum = struct.unpack('<H', data[44:46])[0]
+else:  # 64-bit
+    phoff = struct.unpack('<Q', data[32:40])[0]
+    phentsize = struct.unpack('<H', data[54:56])[0]
+    phnum = struct.unpack('<H', data[56:58])[0]
+
+# Find GNU_STACK segment and clear executable flag
+found = False
+for i in range(phnum):
+    offset = phoff + i * phentsize
+    if elf_class == 1:  # 32-bit
+        p_type = struct.unpack('<I', data[offset:offset+4])[0]
+    else:  # 64-bit
+        p_type = struct.unpack('<I', data[offset:offset+4])[0]
+    
+    # Check if it's PT_GNU_STACK (0x6474e551)
+    if p_type == 0x6474e551:
+        found = True
+        if elf_class == 1:  # 32-bit
+            p_flags_offset = offset + 24
+        else:  # 64-bit
+            p_flags_offset = offset + 4
+        
+        # Read current flags
+        p_flags = struct.unpack('<I', data[p_flags_offset:p_flags_offset+4])[0]
+        # Clear executable bit (remove PF_X = 0x1)
+        p_flags = p_flags & ~0x1
+        # Write back
+        data[p_flags_offset:p_flags_offset+4] = struct.pack('<I', p_flags)
+        print(f'Cleared executable flag. New flags: 0x{p_flags:x}')
+        break
+
+if found:
+    # Write back the modified file
+    with open(lib_path, 'wb') as f:
+        f.write(data)
+    print('File updated successfully')
+else:
+    print('Warning: GNU_STACK segment not found')
+    sys.exit(1)
+PYTHON_SCRIPT
+
+if [ $? -eq 0 ]; then
+    echo "Successfully fixed executable stack flag in $LIB_PATH"
+else
+    echo "Failed to fix executable stack flag"
+    exit 1
+fi
+
diff --git a/linux/monero_libwallet2_api_c.so b/linux/monero_libwallet2_api_c.so
new file mode 100755
index 0000000..5357e8b
Binary files /dev/null and b/linux/monero_libwallet2_api_c.so differ
diff --git a/linux/runner/my_application.cc b/linux/runner/my_application.cc
index 37ae633..8f54899 100644
--- a/linux/runner/my_application.cc
+++ b/linux/runner/my_application.cc
@@ -27,7 +27,7 @@ static void my_application_activate(GApplication* application) {
   // in case the window manager does more exotic layout, e.g. tiling.
   // If running on Wayland assume the header bar will work (may need changing
   // if future cases occur).
-  gboolean use_header_bar = TRUE;
+  gboolean use_header_bar = FALSE;
 #ifdef GDK_WINDOWING_X11
   GdkScreen* screen = gtk_window_get_screen(window);
   if (GDK_IS_X11_SCREEN(screen)) {
diff --git a/windows/CMakeLists.txt b/windows/CMakeLists.txt
index 0d2952f..810cf02 100644
--- a/windows/CMakeLists.txt
+++ b/windows/CMakeLists.txt
@@ -43,6 +43,7 @@ function(APPLY_STANDARD_SETTINGS TARGET)
   target_compile_options(${TARGET} PRIVATE /EHsc)
   target_compile_definitions(${TARGET} PRIVATE "_HAS_EXCEPTIONS=0")
   target_compile_definitions(${TARGET} PRIVATE "$<$<CONFIG:Debug>:_DEBUG>")
+  target_compile_options(${TARGET} PRIVATE -Wno-deprecated)
 endfunction()
 
 # Flutter library and tool build rules.