792 lines
22 KiB
Dart
792 lines
22 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import 'dart:developer' as developer;
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import 'dart:ffi';
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import 'dart:io';
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import 'package:flutter/foundation.dart';
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import 'package:hooks_riverpod/hooks_riverpod.dart';
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import 'package:island/pods/network.dart';
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import 'package:shelf/shelf.dart';
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import 'package:shelf/shelf_io.dart' as shelf_io;
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import 'package:shelf_web_socket/shelf_web_socket.dart';
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import 'package:web_socket_channel/web_socket_channel.dart';
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import 'package:path/path.dart' as path;
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import 'package:win32/win32.dart';
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import 'package:win32/winsock2.dart' as winsock2;
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import 'package:ffi/ffi.dart';
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const String kRpcLogPrefix = 'arRPC.websocket';
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const String kRpcIpcLogPrefix = 'arRPC.ipc';
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// IPC Constants
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const String kIpcBasePath = 'discord-ipc';
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// IPC Packet Types
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class IpcTypes {
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static const int handshake = 0;
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static const int frame = 1;
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static const int close = 2;
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static const int ping = 3;
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static const int pong = 4;
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}
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// IPC Close Codes
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class IpcCloseCodes {
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static const int closeNormal = 1000;
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static const int closeUnsupported = 1003;
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static const int closeAbnormal = 1006;
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}
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// IPC Error Codes
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class IpcErrorCodes {
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static const int invalidClientId = 4000;
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static const int invalidOrigin = 4001;
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static const int rateLimited = 4002;
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static const int tokenRevoked = 4003;
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static const int invalidVersion = 4004;
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static const int invalidEncoding = 4005;
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}
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// Reference https://github.com/OpenAsar/arrpc/blob/main/src/transports/ipc.js
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class ActivityRpcServer {
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static const List<int> portRange = [6463, 6472]; // Ports 6463–6472
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Map<String, Function> handlers; // {connection: (socket), message: (socket, data), close: (socket)}
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HttpServer? _httpServer;
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ServerSocket? _ipcServer;
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int? _pipeHandle; // For Windows named pipe
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final List<WebSocketChannel> _wsSockets = [];
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final List<_IpcSocketWrapper> _ipcSockets = [];
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ActivityRpcServer(this.handlers);
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void updateHandlers(Map<String, Function> newHandlers) {
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handlers = newHandlers;
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}
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// Encode IPC packet
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static Uint8List encodeIpcPacket(int type, Map<String, dynamic> data) {
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final jsonData = jsonEncode(data);
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final dataBytes = utf8.encode(jsonData);
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final dataSize = dataBytes.length;
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final buffer = ByteData(8 + dataSize);
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buffer.setInt32(0, type, Endian.little);
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buffer.setInt32(4, dataSize, Endian.little);
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buffer.buffer.asUint8List().setRange(8, 8 + dataSize, dataBytes);
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return buffer.buffer.asUint8List();
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}
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Future<String> _getMacOsSystemTmpDir() async {
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final result = await Process.run('getconf', ['DARWIN_USER_TEMP_DIR']);
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return (result.stdout as String).trim();
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}
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// Find available IPC socket path
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Future<String> _findAvailableIpcPath() async {
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if (Platform.isWindows) return r'\\.\pipe\discord-ipc';
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// Build list of directories to try, with macOS-specific handling
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final baseDirs = <String>[];
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if (Platform.isMacOS) {
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try {
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final macTempDir = await _getMacOsSystemTmpDir();
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if (macTempDir.isNotEmpty) {
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baseDirs.add(macTempDir);
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}
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} catch (e) {
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developer.log(
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'Failed to get macOS system temp dir: $e',
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name: kRpcIpcLogPrefix,
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);
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}
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}
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// Add other standard directories
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final otherDirs = [
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Platform.environment['XDG_RUNTIME_DIR'],
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Platform.environment['TMPDIR'],
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Platform.environment['TMP'],
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Platform.environment['TEMP'],
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'/tmp',
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];
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baseDirs.addAll(
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otherDirs.where((dir) => dir != null && dir.isNotEmpty).cast<String>(),
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);
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for (final baseDir in baseDirs) {
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for (int i = 0; i < 10; i++) {
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final socketPath = path.join(baseDir, '$kIpcBasePath-$i');
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try {
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final socket = await ServerSocket.bind(
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InternetAddress(socketPath, type: InternetAddressType.unix),
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0,
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);
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socket.close();
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try {
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await File(socketPath).delete();
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} catch (_) {}
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developer.log(
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'IPC socket will be created at: $socketPath',
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name: kRpcIpcLogPrefix,
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);
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return socketPath;
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} catch (e) {
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if (i == 0) {
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developer.log(
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'IPC path $socketPath not available: $e',
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name: kRpcIpcLogPrefix,
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);
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}
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continue;
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}
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}
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}
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throw Exception(
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'No available IPC socket paths found in any temp directory',
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);
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}
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// Start the server
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Future<void> start() async {
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int port = portRange[0];
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bool wsSuccess = false;
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// Start WebSocket server
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while (port <= portRange[1]) {
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developer.log('trying port $port', name: kRpcLogPrefix);
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try {
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_httpServer = await HttpServer.bind(InternetAddress.loopbackIPv4, port);
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developer.log('listening on $port', name: kRpcLogPrefix);
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shelf_io.serveRequests(_httpServer!, (Request request) async {
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developer.log('new request', name: kRpcLogPrefix);
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if (request.headers['upgrade']?.toLowerCase() == 'websocket') {
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final handler = webSocketHandler((WebSocketChannel channel, _) {
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_wsSockets.add(channel);
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_onWsConnection(channel, request);
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});
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return handler(request);
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}
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developer.log(
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'new request disposed due to not websocket',
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name: kRpcLogPrefix,
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);
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return Response.notFound('Not a WebSocket request');
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});
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wsSuccess = true;
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break;
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} catch (e) {
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if (e is SocketException && e.osError?.errorCode == 98) {
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developer.log('$port in use!', name: kRpcLogPrefix);
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} else {
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developer.log('http error: $e', name: kRpcLogPrefix);
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}
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port++;
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}
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}
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if (!wsSuccess) {
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throw Exception(
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'Failed to bind to any port in range ${portRange[0]}–${portRange[1]}',
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);
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}
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// Start IPC server
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final shouldStartIpc = !Platform.isMacOS && !kIsWeb;
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if (shouldStartIpc) {
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if (Platform.isWindows) {
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await _startWindowsIpcServer();
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} else {
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try {
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final ipcPath = await _findAvailableIpcPath();
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_ipcServer = await ServerSocket.bind(
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InternetAddress(ipcPath, type: InternetAddressType.unix),
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0,
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);
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developer.log('IPC listening at $ipcPath', name: kRpcIpcLogPrefix);
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_ipcServer!.listen((Socket socket) {
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_onIpcConnection(socket);
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});
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} catch (e) {
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developer.log('IPC server error: $e', name: kRpcIpcLogPrefix);
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}
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}
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} else {
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developer.log(
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'IPC server disabled on macOS or web in production mode',
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name: kRpcIpcLogPrefix,
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);
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}
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}
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// Start Windows-specific IPC server using Winsock2 named pipe
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Future<void> _startWindowsIpcServer() async {
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final pipeName = r'\\.\pipe\discord-ipc'.toNativeUtf16();
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try {
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_pipeHandle = CreateNamedPipe(
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pipeName,
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PIPE_ACCESS_DUPLEX,
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PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT,
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PIPE_UNLIMITED_INSTANCES,
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4096, // Output buffer size
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4096, // Input buffer size
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0, // Default timeout
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nullptr, // Security attributes
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);
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if (_pipeHandle == INVALID_HANDLE_VALUE) {
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final error = GetLastError();
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throw Exception('Failed to create named pipe: error code $error');
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}
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developer.log('IPC named pipe created at \\\\.\\pipe\\discord-ipc', name: kRpcIpcLogPrefix);
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// Start listening for connections in a separate isolate or async loop
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_listenWindowsIpc();
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} finally {
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free(pipeName);
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}
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}
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// Listen for Windows IPC connections
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void _listenWindowsIpc() {
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Timer.periodic(Duration(milliseconds: 100), (timer) async {
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if (_pipeHandle == null || _pipeHandle == INVALID_HANDLE_VALUE) {
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timer.cancel();
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return;
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}
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final connected = ConnectNamedPipe(_pipeHandle!, nullptr);
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if (connected != 0 || GetLastError() == ERROR_PIPE_CONNECTED) {
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final socketWrapper = _IpcSocketWrapper(_pipeHandle!);
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_ipcSockets.add(socketWrapper);
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developer.log('New IPC connection on named pipe', name: kRpcIpcLogPrefix);
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// Handle data reading in a separate async function
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_handleWindowsIpcData(socketWrapper);
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// Create a new pipe for the next connection
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await _startWindowsIpcServer();
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}
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});
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}
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// Handle Windows IPC data
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void _handleWindowsIpcData(_IpcSocketWrapper socket) async {
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final buffer = malloc.allocate<Uint8>(4096);
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final bytesRead = malloc.allocate<Uint32>(sizeOf<Uint32>());
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try {
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while (socket.pipeHandle != null) {
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final success = ReadFile(
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socket.pipeHandle!,
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buffer.cast(),
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4096,
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bytesRead,
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nullptr,
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);
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if (success == FALSE && GetLastError() != ERROR_MORE_DATA) {
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developer.log('IPC read error: ${GetLastError()}', name: kRpcIpcLogPrefix);
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socket.close();
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break;
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}
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final data = buffer.asTypedList(bytesRead.value);
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socket.addData(data);
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final packets = socket.readPackets();
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for (final packet in packets) {
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_handleIpcPacket(socket, packet);
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}
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}
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} catch (e) {
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developer.log('IPC data error: $e', name: kRpcIpcLogPrefix);
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socket.closeWithCode(IpcCloseCodes.closeUnsupported, e.toString());
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} finally {
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malloc.free(buffer);
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malloc.free(bytesRead);
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}
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}
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// Stop the server
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Future<void> stop() async {
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// Stop WebSocket server
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for (var socket in _wsSockets) {
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await socket.sink.close();
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}
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_wsSockets.clear();
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await _httpServer?.close();
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// Stop IPC server
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for (var socket in _ipcSockets) {
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socket.close();
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}
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_ipcSockets.clear();
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if (Platform.isWindows && _pipeHandle != null) {
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CloseHandle(_pipeHandle!);
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_pipeHandle = null;
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}
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await _ipcServer?.close();
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developer.log('servers stopped', name: kRpcLogPrefix);
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}
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// Handle new WebSocket connection
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void _onWsConnection(WebSocketChannel socket, Request request) {
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final uri = request.url;
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final params = uri.queryParameters;
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final ver = int.tryParse(params['v'] ?? '1') ?? 1;
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final encoding = params['encoding'] ?? 'json';
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final clientId = params['client_id'] ?? '';
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final origin = request.headers['origin'] ?? '';
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developer.log(
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'new WS connection! origin: $origin, params: $params',
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name: kRpcLogPrefix,
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);
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if (origin.isNotEmpty &&
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![
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'https://discord.com',
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'https://ptb.discord.com',
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'https://canary.discord.com',
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].contains(origin)) {
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developer.log('disallowed origin: $origin', name: kRpcLogPrefix);
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socket.sink.close();
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return;
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}
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if (encoding != 'json') {
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developer.log(
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'unsupported encoding requested: $encoding',
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name: kRpcLogPrefix,
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);
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socket.sink.close();
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return;
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}
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if (ver != 1) {
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developer.log('unsupported version requested: $ver', name: kRpcLogPrefix);
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socket.sink.close();
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return;
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}
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final socketWithMeta = _WsSocketWrapper(socket, clientId, encoding);
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socket.stream.listen(
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(data) => _onWsMessage(socketWithMeta, data),
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onError: (e) {
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developer.log('WS socket error: $e', name: kRpcLogPrefix);
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},
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onDone: () {
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developer.log('WS socket closed', name: kRpcLogPrefix);
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handlers['close']?.call(socketWithMeta);
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_wsSockets.remove(socket);
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},
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);
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handlers['connection']?.call(socketWithMeta);
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}
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// Handle new IPC connection
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void _onIpcConnection(Socket socket) {
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developer.log('new IPC connection!', name: kRpcIpcLogPrefix);
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final socketWrapper = _IpcSocketWrapper.fromSocket(socket);
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_ipcSockets.add(socketWrapper);
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socket.listen(
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(data) => _onIpcData(socketWrapper, data),
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onError: (e) {
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developer.log('IPC socket error: $e', name: kRpcIpcLogPrefix);
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socket.close();
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},
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onDone: () {
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developer.log('IPC socket closed', name: kRpcIpcLogPrefix);
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handlers['close']?.call(socketWrapper);
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_ipcSockets.remove(socketWrapper);
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},
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);
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}
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// Handle incoming WebSocket message
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void _onWsMessage(_WsSocketWrapper socket, dynamic data) {
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try {
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final jsonData = jsonDecode(data as String);
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developer.log('WS message: $jsonData', name: kRpcLogPrefix);
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handlers['message']?.call(socket, jsonData);
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} catch (e) {
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developer.log('WS message parse error: $e', name: kRpcLogPrefix);
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}
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}
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// Handle incoming IPC data
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void _onIpcData(_IpcSocketWrapper socket, List<int> data) {
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try {
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socket.addData(data);
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final packets = socket.readPackets();
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for (final packet in packets) {
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_handleIpcPacket(socket, packet);
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}
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} catch (e) {
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developer.log('IPC data error: $e', name: kRpcIpcLogPrefix);
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socket.closeWithCode(IpcCloseCodes.closeUnsupported, e.toString());
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}
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}
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// Handle IPC packet
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void _handleIpcPacket(_IpcSocketWrapper socket, _IpcPacket packet) {
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switch (packet.type) {
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case IpcTypes.ping:
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developer.log('IPC ping received', name: kRpcIpcLogPrefix);
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socket.sendPong(packet.data);
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break;
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case IpcTypes.pong:
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developer.log('IPC pong received', name: kRpcIpcLogPrefix);
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break;
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case IpcTypes.handshake:
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if (socket.handshook) {
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throw Exception('Already handshook');
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}
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socket.handshook = true;
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_onIpcHandshake(socket, packet.data);
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break;
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case IpcTypes.frame:
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if (!socket.handshook) {
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throw Exception('Need to handshake first');
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}
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developer.log('IPC frame: ${packet.data}', name: kRpcIpcLogPrefix);
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handlers['message']?.call(socket, packet.data);
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break;
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case IpcTypes.close:
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socket.close();
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break;
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default:
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throw Exception('Invalid packet type: ${packet.type}');
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}
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}
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// Handle IPC handshake
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void _onIpcHandshake(_IpcSocketWrapper socket, Map<String, dynamic> params) {
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developer.log('IPC handshake: $params', name: kRpcIpcLogPrefix);
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final ver = int.tryParse(params['v']?.toString() ?? '1') ?? 1;
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final clientId = params['client_id']?.toString() ?? '';
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if (ver != 1) {
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developer.log(
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'IPC unsupported version requested: $ver',
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name: kRpcIpcLogPrefix,
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);
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socket.closeWithCode(IpcErrorCodes.invalidVersion);
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return;
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}
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if (clientId.isEmpty) {
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developer.log('IPC client ID required', name: kRpcIpcLogPrefix);
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socket.closeWithCode(IpcErrorCodes.invalidClientId);
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return;
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}
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socket.clientId = clientId;
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handlers['connection']?.call(socket);
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}
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}
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// WebSocket wrapper
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class _WsSocketWrapper {
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final WebSocketChannel channel;
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final String clientId;
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final String encoding;
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_WsSocketWrapper(this.channel, this.clientId, this.encoding);
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void send(Map<String, dynamic> msg) {
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developer.log('WS sending: $msg', name: kRpcLogPrefix);
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channel.sink.add(jsonEncode(msg));
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}
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}
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// IPC wrapper
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class _IpcSocketWrapper {
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final Socket? socket;
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final int? pipeHandle;
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String clientId = '';
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bool handshook = false;
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final List<int> _buffer = [];
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_IpcSocketWrapper(this.pipeHandle) : socket = null;
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_IpcSocketWrapper.fromSocket(this.socket) : pipeHandle = null;
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void addData(List<int> data) {
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_buffer.addAll(data);
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}
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void send(Map<String, dynamic> msg) {
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developer.log('IPC sending: $msg', name: kRpcIpcLogPrefix);
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final packet = ActivityRpcServer.encodeIpcPacket(IpcTypes.frame, msg);
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if (Platform.isWindows && pipeHandle != null) {
|
||
final buffer = malloc.allocate<Uint8>(packet.length);
|
||
buffer.asTypedList(packet.length).setAll(0, packet);
|
||
final bytesWritten = malloc.allocate<Uint32>(sizeOf<Uint32>());
|
||
try {
|
||
WriteFile(
|
||
pipeHandle!,
|
||
buffer.cast(),
|
||
packet.length,
|
||
bytesWritten,
|
||
nullptr,
|
||
);
|
||
} finally {
|
||
malloc.free(buffer);
|
||
malloc.free(bytesWritten);
|
||
}
|
||
} else {
|
||
socket?.add(packet);
|
||
}
|
||
}
|
||
|
||
void sendPong(dynamic data) {
|
||
final packet = ActivityRpcServer.encodeIpcPacket(IpcTypes.pong, data ?? {});
|
||
if (Platform.isWindows && pipeHandle != null) {
|
||
final buffer = malloc.allocate<Uint8>(packet.length);
|
||
buffer.asTypedList(packet.length).setAll(0, packet);
|
||
final bytesWritten = malloc.allocate<Uint32>(sizeOf<Uint32>());
|
||
try {
|
||
WriteFile(
|
||
pipeHandle!,
|
||
buffer.cast(),
|
||
packet.length,
|
||
bytesWritten,
|
||
nullptr,
|
||
);
|
||
} finally {
|
||
malloc.free(buffer);
|
||
malloc.free(bytesWritten);
|
||
}
|
||
} else {
|
||
socket?.add(packet);
|
||
}
|
||
}
|
||
|
||
void close() {
|
||
if (Platform.isWindows && pipeHandle != null) {
|
||
CloseHandle(pipeHandle!);
|
||
} else {
|
||
socket?.close();
|
||
}
|
||
}
|
||
|
||
void closeWithCode(int code, [String message = '']) {
|
||
final closeData = {'code': code, 'message': message};
|
||
final packet = ActivityRpcServer.encodeIpcPacket(IpcTypes.close, closeData);
|
||
if (Platform.isWindows && pipeHandle != null) {
|
||
final buffer = malloc.allocate<Uint8>(packet.length);
|
||
buffer.asTypedList(packet.length).setAll(0, packet);
|
||
final bytesWritten = malloc.allocate<Uint32>(sizeOf<Uint32>());
|
||
try {
|
||
WriteFile(
|
||
pipeHandle!,
|
||
buffer.cast(),
|
||
packet.length,
|
||
bytesWritten,
|
||
nullptr,
|
||
);
|
||
} finally {
|
||
malloc.free(buffer);
|
||
malloc.free(bytesWritten);
|
||
}
|
||
CloseHandle(pipeHandle!);
|
||
} else {
|
||
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 {
|
||
if (!Platform.isAndroid && !Platform.isIOS && !kIsWeb) {
|
||
try {
|
||
await server.start();
|
||
state = state.copyWith(status: 'Server running');
|
||
} catch (e) {
|
||
state = state.copyWith(status: 'Server failed: $e');
|
||
}
|
||
} else {
|
||
state = state.copyWith(status: 'Server disabled on mobile/web');
|
||
}
|
||
}
|
||
|
||
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)');
|
||
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',
|
||
});
|
||
},
|
||
'message': (socket, dynamic data) async {
|
||
if (data['cmd'] == 'SET_ACTIVITY') {
|
||
notifier.addActivity(
|
||
'Activity: ${data['args']['activity']['details'] ?? 'Unknown'}',
|
||
);
|
||
final label = data['args']['activity']['details'] ?? 'Unknown';
|
||
final appId = socket.clientId;
|
||
try {
|
||
await setRemoteActivityStatus(ref, label, appId);
|
||
} catch (e) {
|
||
developer.log(
|
||
'Failed to set remote activity status: $e',
|
||
name: kRpcLogPrefix,
|
||
);
|
||
}
|
||
socket.send({
|
||
'cmd': 'SET_ACTIVITY',
|
||
'data': data['args']['activity'],
|
||
'evt': null,
|
||
'nonce': data['nonce'],
|
||
});
|
||
}
|
||
},
|
||
'close': (socket) async {
|
||
notifier.updateStatus('Client disconnected');
|
||
final appId = socket.clientId;
|
||
try {
|
||
await unsetRemoteActivityStatus(ref, appId);
|
||
} catch (e) {
|
||
developer.log(
|
||
'Failed to unset remote activity status: $e',
|
||
name: kRpcLogPrefix,
|
||
);
|
||
}
|
||
},
|
||
});
|
||
return notifier;
|
||
});
|
||
|
||
final rpcServerProvider = Provider<ActivityRpcServer>((ref) {
|
||
final notifier = ref.watch(rpcServerStateProvider.notifier);
|
||
return notifier.server;
|
||
});
|
||
|
||
Future<void> setRemoteActivityStatus(
|
||
Ref ref,
|
||
String label,
|
||
String appId,
|
||
) async {
|
||
final apiClient = ref.read(apiClientProvider);
|
||
await apiClient.post(
|
||
'/id/accounts/me/statuses',
|
||
data: {
|
||
'is_invisible': false,
|
||
'is_not_disturb': false,
|
||
'is_automated': true,
|
||
'label': label,
|
||
'app_identifier': appId,
|
||
},
|
||
);
|
||
}
|
||
|
||
Future<void> unsetRemoteActivityStatus(Ref ref, String appId) async {
|
||
final apiClient = ref.read(apiClientProvider);
|
||
await apiClient.delete(
|
||
'/id/accounts/me/statuses',
|
||
queryParameters: {'app': appId},
|
||
);
|
||
} |