🧱 Activity RPC server

lib/pods/activity_rpc.dart

@@ -0,0 +1,572 @@
+import 'dart:async';
+import 'dart:convert';
+import 'dart:developer' as developer;
+import 'dart:io';
+import 'dart:typed_data';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:shelf/shelf.dart';
+import 'package:shelf/shelf_io.dart' as shelf_io;
+import 'package:shelf_web_socket/shelf_web_socket.dart';
+import 'package:web_socket_channel/web_socket_channel.dart';
+import 'package:path/path.dart' as path;
+
+const String kRpcLogPrefix = 'arRPC.websocket';
+const String kRpcIpcLogPrefix = 'arRPC.ipc';
+
+// IPC Constants
+const String kIpcBasePath = 'discord-ipc';
+
+// IPC Packet Types
+class IpcTypes {
+  static const int handshake = 0;
+  static const int frame = 1;
+  static const int close = 2;
+  static const int ping = 3;
+  static const int pong = 4;
+}
+
+// IPC Close Codes
+class IpcCloseCodes {
+  static const int closeNormal = 1000;
+  static const int closeUnsupported = 1003;
+  static const int closeAbnormal = 1006;
+}
+
+// IPC Error Codes
+class IpcErrorCodes {
+  static const int invalidClientId = 4000;
+  static const int invalidOrigin = 4001;
+  static const int rateLimited = 4002;
+  static const int tokenRevoked = 4003;
+  static const int invalidVersion = 4004;
+  static const int invalidEncoding = 4005;
+}
+
+class ActivityRpcServer {
+  static const List<int> portRange = [6463, 6472]; // Ports 6463–6472
+  Map<String, Function>
+  handlers; // {connection: (socket), message: (socket, data), close: (socket)}
+  HttpServer? _httpServer;
+  ServerSocket? _ipcServer;
+  final List<WebSocketChannel> _wsSockets = [];
+  final List<_IpcSocketWrapper> _ipcSockets = [];
+
+  ActivityRpcServer(this.handlers);
+
+  void updateHandlers(Map<String, Function> newHandlers) {
+    handlers = newHandlers;
+  }
+
+  // Encode IPC packet
+  static Uint8List encodeIpcPacket(int type, Map<String, dynamic> data) {
+    final jsonData = jsonEncode(data);
+    final dataBytes = utf8.encode(jsonData);
+    final dataSize = dataBytes.length;
+
+    final buffer = ByteData(8 + dataSize);
+    buffer.setInt32(0, type, Endian.little);
+    buffer.setInt32(4, dataSize, Endian.little);
+    buffer.buffer.asUint8List().setRange(8, 8 + dataSize, dataBytes);
+
+    return buffer.buffer.asUint8List();
+  }
+
+  Future<String> _getMacOsSystemTmpDir() async {
+    final result = await Process.run('getconf', ['DARWIN_USER_TEMP_DIR']);
+    return (result.stdout as String).trim();
+  }
+
+  // Find available IPC socket path
+  Future<String> _findAvailableIpcPath() async {
+    final baseDirs = [
+      if (Platform.isMacOS) await _getMacOsSystemTmpDir(),
+      Platform.environment['XDG_RUNTIME_DIR'], // User runtime directory
+      Platform.environment['TMPDIR'], // App container temp (fallback)
+      Platform.environment['TMP'],
+      Platform.environment['TEMP'],
+      '/temp',
+      '/tmp', // System temp directory - most compatible
+    ];
+
+    for (final baseDir in baseDirs) {
+      if (baseDir == null || baseDir.isEmpty) continue;
+      for (int i = 0; i < 10; i++) {
+        final socketPath = path.join(baseDir, '$kIpcBasePath-$i');
+        try {
+          final socket = await ServerSocket.bind(
+            InternetAddress(socketPath, type: InternetAddressType.unix),
+            0,
+          );
+          socket.close();
+          // Clean up the test socket
+          try {
+            await File(socketPath).delete();
+          } catch (_) {}
+          developer.log(
+            'IPC socket will be created at: $socketPath',
+            name: kRpcIpcLogPrefix,
+          );
+          return socketPath;
+        } catch (e) {
+          // Path not available, try next
+          if (i == 0) {
+            // Log only for the first attempt per directory
+            developer.log(
+              'IPC path $socketPath not available: $e',
+              name: kRpcIpcLogPrefix,
+            );
+          }
+          continue;
+        }
+      }
+    }
+    throw Exception(
+      'No available IPC socket paths found in any temp directory',
+    );
+  }
+
+  // Start the WebSocket server
+  Future<void> start() async {
+    int port = portRange[0];
+    bool wsSuccess = false;
+
+    // Start WebSocket server
+    while (port <= portRange[1]) {
+      developer.log('trying port $port', name: kRpcLogPrefix);
+      try {
+        // Start HTTP server
+        _httpServer = await HttpServer.bind(InternetAddress.loopbackIPv4, port);
+        developer.log('listening on $port', name: kRpcLogPrefix);
+
+        // Handle WebSocket upgrades
+        shelf_io.serveRequests(_httpServer!, (Request request) async {
+          developer.log('new request', name: kRpcLogPrefix);
+          if (request.headers['upgrade']?.toLowerCase() == 'websocket') {
+            final handler = webSocketHandler((WebSocketChannel channel) {
+              _wsSockets.add(channel);
+              _onWsConnection(channel, request);
+            });
+            return handler(request);
+          }
+          developer.log(
+            'new request disposed due to not websocket',
+            name: kRpcLogPrefix,
+          );
+          return Response.notFound('Not a WebSocket request');
+        });
+        wsSuccess = true;
+        break;
+      } catch (e) {
+        if (e is SocketException && e.osError?.errorCode == 98) {
+          // EADDRINUSE
+          developer.log('$port in use!', name: kRpcLogPrefix);
+        } else {
+          developer.log('http error: $e', name: kRpcLogPrefix);
+        }
+        port++;
+      }
+    }
+
+    if (!wsSuccess) {
+      throw Exception(
+        'Failed to bind to any port in range ${portRange[0]}–${portRange[1]}',
+      );
+    }
+
+    // Start IPC server
+    try {
+      final ipcPath = await _findAvailableIpcPath();
+      _ipcServer = await ServerSocket.bind(
+        InternetAddress(ipcPath, type: InternetAddressType.unix),
+        0,
+      );
+      developer.log('IPC listening at $ipcPath', name: kRpcIpcLogPrefix);
+
+      _ipcServer!.listen((Socket socket) {
+        _onIpcConnection(socket);
+      });
+    } catch (e) {
+      developer.log('IPC server error: $e', name: kRpcIpcLogPrefix);
+      // Continue without IPC if it fails
+    }
+  }
+
+  // Stop the server
+  Future<void> stop() async {
+    // Stop WebSocket server
+    for (var socket in _wsSockets) {
+      await socket.sink.close();
+    }
+    _wsSockets.clear();
+    await _httpServer?.close();
+
+    // Stop IPC server
+    for (var socket in _ipcSockets) {
+      socket.close();
+    }
+    _ipcSockets.clear();
+    await _ipcServer?.close();
+
+    developer.log('servers stopped', name: kRpcLogPrefix);
+  }
+
+  // Handle new WebSocket connection
+  void _onWsConnection(WebSocketChannel socket, Request request) {
+    // Parse query parameters
+    final uri = request.url;
+    final params = uri.queryParameters;
+    final ver = int.tryParse(params['v'] ?? '1') ?? 1;
+    final encoding = params['encoding'] ?? 'json';
+    final clientId = params['client_id'] ?? '';
+    final origin = request.headers['origin'] ?? '';
+
+    developer.log(
+      'new WS connection! origin: $origin, params: $params',
+      name: kRpcLogPrefix,
+    );
+
+    // Validate origin
+    if (origin.isNotEmpty &&
+        ![
+          'https://discord.com',
+          'https://ptb.discord.com',
+          'https://canary.discord.com',
+        ].contains(origin)) {
+      developer.log('disallowed origin: $origin', name: kRpcLogPrefix);
+      socket.sink.close();
+      return;
+    }
+
+    // Validate encoding
+    if (encoding != 'json') {
+      developer.log(
+        'unsupported encoding requested: $encoding',
+        name: kRpcLogPrefix,
+      );
+      socket.sink.close();
+      return;
+    }
+
+    // Validate version
+    if (ver != 1) {
+      developer.log('unsupported version requested: $ver', name: kRpcLogPrefix);
+      socket.sink.close();
+      return;
+    }
+
+    // Store client info on socket
+    final socketWithMeta = _WsSocketWrapper(socket, clientId, encoding);
+
+    // Set up event listeners
+    socket.stream.listen(
+      (data) => _onWsMessage(socketWithMeta, data),
+      onError: (e) {
+        developer.log('WS socket error: $e', name: kRpcLogPrefix);
+      },
+      onDone: () {
+        developer.log('WS socket closed', name: kRpcLogPrefix);
+        handlers['close']?.call(socketWithMeta);
+        _wsSockets.remove(socket);
+      },
+    );
+
+    // Notify handler of new connection
+    handlers['connection']?.call(socketWithMeta);
+  }
+
+  // Handle new IPC connection
+  void _onIpcConnection(Socket socket) {
+    developer.log('new IPC connection!', name: kRpcIpcLogPrefix);
+
+    final socketWrapper = _IpcSocketWrapper(socket);
+    _ipcSockets.add(socketWrapper);
+
+    // Set up event listeners
+    socket.listen(
+      (data) => _onIpcData(socketWrapper, data),
+      onError: (e) {
+        developer.log('IPC socket error: $e', name: kRpcIpcLogPrefix);
+        socket.close();
+      },
+      onDone: () {
+        developer.log('IPC socket closed', name: kRpcIpcLogPrefix);
+        handlers['close']?.call(socketWrapper);
+        _ipcSockets.remove(socketWrapper);
+      },
+    );
+  }
+
+  // Handle incoming WebSocket message
+  void _onWsMessage(_WsSocketWrapper socket, dynamic data) {
+    try {
+      final jsonData = jsonDecode(data as String);
+      developer.log('WS message: $jsonData', name: kRpcLogPrefix);
+      handlers['message']?.call(socket, jsonData);
+    } catch (e) {
+      developer.log('WS message parse error: $e', name: kRpcLogPrefix);
+    }
+  }
+
+  // Handle incoming IPC data
+  void _onIpcData(_IpcSocketWrapper socket, List<int> data) {
+    try {
+      socket.addData(data);
+      final packets = socket.readPackets();
+      for (final packet in packets) {
+        _handleIpcPacket(socket, packet);
+      }
+    } catch (e) {
+      developer.log('IPC data error: $e', name: kRpcIpcLogPrefix);
+      socket.closeWithCode(IpcCloseCodes.closeUnsupported, e.toString());
+    }
+  }
+
+  // Handle IPC packet
+  void _handleIpcPacket(_IpcSocketWrapper socket, _IpcPacket packet) {
+    switch (packet.type) {
+      case IpcTypes.ping:
+        developer.log('IPC ping received', name: kRpcIpcLogPrefix);
+        socket.sendPong(packet.data);
+        break;
+
+      case IpcTypes.pong:
+        developer.log('IPC pong received', name: kRpcIpcLogPrefix);
+        // Handle pong if needed
+        break;
+
+      case IpcTypes.handshake:
+        if (socket.handshook) {
+          throw Exception('Already handshook');
+        }
+        socket.handshook = true;
+        _onIpcHandshake(socket, packet.data);
+        break;
+
+      case IpcTypes.frame:
+        if (!socket.handshook) {
+          throw Exception('Need to handshake first');
+        }
+        developer.log('IPC frame: ${packet.data}', name: kRpcIpcLogPrefix);
+        handlers['message']?.call(socket, packet.data);
+        break;
+
+      case IpcTypes.close:
+        socket.close();
+        break;
+
+      default:
+        throw Exception('Invalid packet type: ${packet.type}');
+    }
+  }
+
+  // Handle IPC handshake
+  void _onIpcHandshake(_IpcSocketWrapper socket, Map<String, dynamic> params) {
+    developer.log('IPC handshake: $params', name: kRpcIpcLogPrefix);
+
+    final ver = int.tryParse(params['v']?.toString() ?? '1') ?? 1;
+    final clientId = params['client_id']?.toString() ?? '';
+
+    // Validate version
+    if (ver != 1) {
+      developer.log(
+        'IPC unsupported version requested: $ver',
+        name: kRpcIpcLogPrefix,
+      );
+      socket.closeWithCode(IpcErrorCodes.invalidVersion);
+      return;
+    }
+
+    // Validate client ID
+    if (clientId.isEmpty) {
+      developer.log('IPC client ID required', name: kRpcIpcLogPrefix);
+      socket.closeWithCode(IpcErrorCodes.invalidClientId);
+      return;
+    }
+
+    socket.clientId = clientId;
+
+    // Notify handler of new connection
+    handlers['connection']?.call(socket);
+  }
+}
+
+// WebSocket wrapper
+class _WsSocketWrapper {
+  final WebSocketChannel channel;
+  final String clientId;
+  final String encoding;
+
+  _WsSocketWrapper(this.channel, this.clientId, this.encoding);
+
+  void send(Map<String, dynamic> msg) {
+    developer.log('WS sending: $msg', name: kRpcLogPrefix);
+    channel.sink.add(jsonEncode(msg));
+  }
+}
+
+// IPC wrapper
+class _IpcSocketWrapper {
+  final Socket socket;
+  String clientId = '';
+  bool handshook = false;
+  final List<int> _buffer = [];
+
+  _IpcSocketWrapper(this.socket);
+
+  void addData(List<int> data) {
+    _buffer.addAll(data);
+  }
+
+  void send(Map<String, dynamic> msg) {
+    developer.log('IPC sending: $msg', name: kRpcIpcLogPrefix);
+    final packet = ActivityRpcServer.encodeIpcPacket(IpcTypes.frame, msg);
+    socket.add(packet);
+  }
+
+  void sendPong(dynamic data) {
+    final packet = ActivityRpcServer.encodeIpcPacket(IpcTypes.pong, data ?? {});
+    socket.add(packet);
+  }
+
+  void close() {
+    socket.close();
+  }
+
+  void closeWithCode(int code, [String message = '']) {
+    final closeData = {'code': code, 'message': message};
+    final packet = ActivityRpcServer.encodeIpcPacket(IpcTypes.close, closeData);
+    socket.add(packet);
+    socket.close();
+  }
+
+  List<_IpcPacket> readPackets() {
+    final packets = <_IpcPacket>[];
+
+    while (_buffer.length >= 8) {
+      final buffer = Uint8List.fromList(_buffer);
+      final byteData = ByteData.view(buffer.buffer);
+
+      final type = byteData.getInt32(0, Endian.little);
+      final dataSize = byteData.getInt32(4, Endian.little);
+
+      if (_buffer.length < 8 + dataSize) break;
+
+      final dataBytes = _buffer.sublist(8, 8 + dataSize);
+      final jsonStr = utf8.decode(dataBytes);
+      final jsonData = jsonDecode(jsonStr);
+
+      packets.add(_IpcPacket(type, jsonData));
+
+      _buffer.removeRange(0, 8 + dataSize);
+    }
+
+    return packets;
+  }
+}
+
+// IPC Packet structure
+class _IpcPacket {
+  final int type;
+  final Map<String, dynamic> data;
+
+  _IpcPacket(this.type, this.data);
+}
+
+// State management for server status and activities
+class ServerState {
+  final String status;
+  final List<String> activities;
+
+  ServerState({required this.status, this.activities = const []});
+
+  ServerState copyWith({String? status, List<String>? activities}) {
+    return ServerState(
+      status: status ?? this.status,
+      activities: activities ?? this.activities,
+    );
+  }
+}
+
+class ServerStateNotifier extends StateNotifier<ServerState> {
+  final ActivityRpcServer server;
+
+  ServerStateNotifier(this.server)
+    : super(ServerState(status: 'Server not started'));
+
+  Future<void> start() async {
+    try {
+      await server.start();
+      state = state.copyWith(status: 'Server running');
+    } catch (e) {
+      state = state.copyWith(status: 'Server failed: $e');
+    }
+  }
+
+  void updateStatus(String status) {
+    state = state.copyWith(status: status);
+  }
+
+  void addActivity(String activity) {
+    state = state.copyWith(activities: [...state.activities, activity]);
+  }
+}
+
+// Providers
+final rpcServerStateProvider =
+    StateNotifierProvider<ServerStateNotifier, ServerState>((ref) {
+      final server = ActivityRpcServer({});
+      final notifier = ServerStateNotifier(server);
+      server.updateHandlers({
+        'connection': (socket) {
+          final clientId =
+              socket is _WsSocketWrapper
+                  ? socket.clientId
+                  : (socket as _IpcSocketWrapper).clientId;
+          notifier.updateStatus('Client connected (ID: $clientId)');
+          // Send READY event
+          socket.send({
+            'cmd': 'DISPATCH',
+            'data': {
+              'v': 1,
+              'config': {
+                'cdn_host': 'fake.cdn',
+                'api_endpoint': '//fake.api',
+                'environment': 'dev',
+              },
+              'user': {
+                'id': 'fake_user_id',
+                'username': 'FakeUser',
+                'discriminator': '0001',
+                'avatar': null,
+                'bot': false,
+              },
+            },
+            'evt': 'READY',
+            'nonce': '12345', // Should be dynamic
+          });
+        },
+        'message': (socket, dynamic data) {
+          if (data['cmd'] == 'SET_ACTIVITY') {
+            notifier.addActivity(
+              'Activity: ${data['args']['activity']['details'] ?? 'Unknown'}',
+            );
+            // Echo back success
+            socket.send({
+              'cmd': 'SET_ACTIVITY',
+              'data': data['args']['activity'],
+              'evt': null,
+              'nonce': data['nonce'],
+            });
+          }
+        },
+        'close': (socket) {
+          notifier.updateStatus('Client disconnected');
+        },
+      });
+      return notifier;
+    });
+
+final rpcServerProvider = Provider<ActivityRpcServer>((ref) {
+  final notifier = ref.watch(rpcServerStateProvider.notifier);
+  return notifier.server;
+});

lib/widgets/app_wrapper.dart

@@ -3,6 +3,7 @@ import 'package:bitsdojo_window/bitsdojo_window.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:island/pods/activity_rpc.dart';
 import 'package:island/pods/websocket.dart';
 import 'package:island/screens/tray_manager.dart';
 import 'package:island/services/notify.dart';
@@ -31,7 +32,10 @@ class AppWrapper extends HookConsumerWidget with TrayListener {
 
       TrayService.instance.initialize(this);
 
+      ref.read(rpcServerStateProvider.notifier).start();
+
       return () {
+        ref.read(rpcServerProvider).stop();
         TrayService.instance.dispose(this);
         sharingService.dispose();
         ntySubs?.cancel();

macos/Runner/DebugProfile.entitlements

@@ -8,21 +8,7 @@
 	</array>
 	<key>com.apple.developer.device-information.user-assigned-device-name</key>
 	<true/>
-	<key>com.apple.security.app-sandbox</key>
-	<true/>
 	<key>com.apple.security.cs.allow-jit</key>
 	<true/>
-	<key>com.apple.security.device.audio-input</key>
-	<true/>
-	<key>com.apple.security.device.camera</key>
-	<true/>
-	<key>com.apple.security.files.downloads.read-write</key>
-	<true/>
-	<key>com.apple.security.files.user-selected.read-only</key>
-	<true/>
-	<key>com.apple.security.network.client</key>
-	<true/>
-	<key>com.apple.security.network.server</key>
-	<true/>
 </dict>
 </plist>

pubspec.lock

@@ -2206,7 +2206,7 @@ packages:
     source: hosted
     version: "2.4.1"
   shelf:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: shelf
       sha256: e7dd780a7ffb623c57850b33f43309312fc863fb6aa3d276a754bb299839ef12
@@ -2214,13 +2214,13 @@ packages:
     source: hosted
     version: "1.4.2"
   shelf_web_socket:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: shelf_web_socket
-      sha256: "3632775c8e90d6c9712f883e633716432a27758216dfb61bd86a8321c0580925"
+      sha256: cc36c297b52866d203dbf9332263c94becc2fe0ceaa9681d07b6ef9807023b67
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.0"
+    version: "2.0.1"
   shortid:
     dependency: transitive
     description:

pubspec.yaml

@@ -145,6 +145,8 @@ dependencies:
   flutter_local_notifications: ^19.4.1
   wakelock_plus: ^1.3.2
   slide_countdown: ^2.0.2
+  shelf: ^1.4.2
+  shelf_web_socket: ^2.0.0
 
 dev_dependencies:
   flutter_test: