9.0.4

2026-01-13 03:02:22 +01:00 · 2024-05-22 16:49:03 +02:00
parent 9f5590d41c
commit d478650e9b
20 changed files with 383 additions and 229 deletions
--- a/common/lib/common.dart
+++ b/common/lib/common.dart
@@ -9,6 +9,7 @@ export 'package:reboot_common/src/model/server_result.dart';
 export 'package:reboot_common/src/model/server_type.dart';
 export 'package:reboot_common/src/model/update_status.dart';
 export 'package:reboot_common/src/model/update_timer.dart';
+export 'package:reboot_common/src/model/process.dart';
 export 'package:reboot_common/src/util/authenticator.dart';
 export 'package:reboot_common/src/util/build.dart';
 export 'package:reboot_common/src/util/dll.dart';
--- a/common/lib/src/model/process.dart
+++ b/common/lib/src/model/process.dart
@@ -0,0 +1,23 @@
+class Win32Process {
+  final int pid;
+  final Stream<String> stdOutput;
+  final Stream<String> errorOutput;
+
+  Win32Process({
+    required this.pid,
+    required this.stdOutput,
+    required this.errorOutput
+  });
+}
+
+class PrimitiveWin32Process {
+  final int pid;
+  final int stdOutputHandle;
+  final int errorOutputHandle;
+
+  PrimitiveWin32Process({
+    required this.pid,
+    required this.stdOutputHandle,
+    required this.errorOutputHandle
+  });
+}
--- a/common/lib/src/util/authenticator.dart
+++ b/common/lib/src/util/authenticator.dart
@@ -7,17 +7,15 @@ import 'package:shelf_proxy/shelf_proxy.dart';
 final authenticatorDirectory = Directory("${assetsDirectory.path}\\authenticator");
 final authenticatorStartExecutable = File("${authenticatorDirectory.path}\\lawinserver.exe");

-Future<int> startEmbeddedAuthenticator(bool detached) async => startBackgroundProcess(
+Future<Win32Process> startEmbeddedAuthenticator(bool detached) async => startProcess(
    executable: authenticatorStartExecutable,
-    window: detached
+    window: detached,
+    
 );

-Future<HttpServer> startRemoteAuthenticatorProxy(Uri uri) async {
-  print("CALLED: $uri");
-  return await serve(proxyHandler(uri), kDefaultAuthenticatorHost, kDefaultAuthenticatorPort);
-}
+Future<HttpServer> startRemoteAuthenticatorProxy(Uri uri) async => await serve(proxyHandler(uri), kDefaultAuthenticatorHost, kDefaultAuthenticatorPort);

-Future<bool> isAuthenticatorPortFree() async => await pingAuthenticator(kDefaultAuthenticatorHost, kDefaultAuthenticatorPort.toString()) == null;
+Future<bool> isAuthenticatorPortFree() async => await pingAuthenticator(kDefaultAuthenticatorHost, kDefaultAuthenticatorPort) == null;

 Future<bool> freeAuthenticatorPort() async {
  await killProcessByPort(kDefaultAuthenticatorPort);
@@ -29,14 +27,14 @@ Future<bool> freeAuthenticatorPort() async {
  return false;
 }

-Future<Uri?> pingAuthenticator(String host, String port, [bool https=false]) async {
+Future<Uri?> pingAuthenticator(String host, int port, [bool https=false]) async {
  var hostName = _getHostName(host);
  var declaredScheme = _getScheme(host);
  try{
    var uri = Uri(
        scheme: declaredScheme ?? (https ? "https" : "http"),
        host: hostName,
-        port: int.parse(port),
+        port: port,
        path: "unknown"
    );
    var client = HttpClient()
--- a/common/lib/src/util/build.dart
+++ b/common/lib/src/util/build.dart
@@ -5,18 +5,35 @@ import 'dart:isolate';
 import 'dart:typed_data';

 import 'package:dio/dio.dart';
+import 'package:dio/io.dart';
 import 'package:path/path.dart' as path;
 import 'package:reboot_common/common.dart';

 const String kStopBuildDownloadSignal = "kill";

-final Dio _dio = Dio();
+final Dio _dio = _buildDioInstance();
+Dio _buildDioInstance() {
+  final dio = Dio();
+  final httpClientAdapter = dio.httpClientAdapter as IOHttpClientAdapter;
+  httpClientAdapter.createHttpClient = () {
+    final client = HttpClient();
+    client.badCertificateCallback = (X509Certificate cert, String host, int port) => true;
+    return client;
+  };
+  return dio;
+}
+
 final String _archiveSourceUrl = "https://raw.githubusercontent.com/simplyblk/Fortnitebuilds/main/README.md";
 final RegExp _rarProgressRegex = RegExp("^((100)|(\\d{1,2}(.\\d*)?))%\$");
 const String _manifestSourceUrl = "https://manifest.fnbuilds.services";
 const int _maxDownloadErrors = 30;

 Future<List<FortniteBuild>> fetchBuilds(ignored) async {
+  (_dio.httpClientAdapter as IOHttpClientAdapter).createHttpClient = () =>
+  HttpClient()
+    ..badCertificateCallback =
+        (X509Certificate cert, String host, int port) => true;
+
  final results = await Future.wait([_fetchManifestBuilds(), _fetchArchiveBuilds()]);
  final data =  <FortniteBuild>[];
  for(final result in results) {
@@ -108,12 +125,6 @@ Future<void> downloadArchiveBuild(FortniteBuildDownloadOptions options) async {
        final response = _downloadArchive(options, tempFile, startTime);
        await Future.any([stopped.future, response]);
        if(!stopped.isCompleted) {
-          var awaitedResponse = await response;
-          if (!awaitedResponse.statusCode.toString().startsWith("20")) {
-            options.port.send("Erroneous status code: ${awaitedResponse.statusCode}");
-            return;
-          }
-
          await _extractArchive(stopped, extension, tempFile, options);
        }

@@ -211,9 +222,23 @@ Future<Response> _downloadArchive(FortniteBuildDownloadOptions options, File tem
        },
        deleteOnError: false,
        options: Options(
-            headers: byteStart == null ? null : {
-              "Range": "bytes=${byteStart}-"
+          validateStatus: (statusCode) {
+            if(statusCode == 200) {
+              return true;
            }
+
+            if(statusCode == 403 || statusCode == 503) {
+              throw Exception("The connection was denied: your firewall might be blocking the download");
+            }
+
+            throw Exception("The build downloader is not available right now");
+          },
+          headers: byteStart == null || byteStart <= 0 ? {
+            "Cookie": "_c_t_c=1"
+          } :  {
+            "Cookie": "_c_t_c=1",
+            "Range": "bytes=${byteStart}-"
+          },
        )
    );
  }catch(error) {
@@ -226,17 +251,28 @@ Future<Response> _downloadArchive(FortniteBuildDownloadOptions options, File tem
 }

 Future<void> _extractArchive(Completer<dynamic> stopped, String extension, File tempFile, FortniteBuildDownloadOptions options) async {
-  var startTime = DateTime.now().millisecondsSinceEpoch;
-  Process? process;
+  final startTime = DateTime.now().millisecondsSinceEpoch;
+  Win32Process? process;
  switch (extension.toLowerCase()) {
    case ".zip":
-      process = await Process.start(
-          "${assetsDirectory.path}\\build\\7zip.exe",
-          ["a", "-bsp1", '-o"${options.destination.path}"', tempFile.path]
+      final sevenZip = File("${assetsDirectory.path}\\build\\7zip.exe");
+      if(!sevenZip.existsSync()) {
+        throw "Corrupted installation: missing 7zip.exe";
+      }
+
+      process = await startProcess(
+        executable: sevenZip,
+        args: [
+          "x",
+          "-bsp1",
+          '-o"${options.destination.path}"',
+          "-y",
+          '"${tempFile.path}"'
+        ],
      );
-      process.stdout.listen((bytes) {
+      process.stdOutput.listen((data) {
+        print(data);
        final now = DateTime.now().millisecondsSinceEpoch;
-        final data = utf8.decode(bytes);
        if(data == "Everything is Ok") {
          options.port.send(FortniteBuildDownloadProgress(100, 0, true));
          return;
@@ -252,42 +288,45 @@ Future<void> _extractArchive(Completer<dynamic> stopped, String extension, File
      });
      break;
    case ".rar":
-      process = await Process.start(
-          "${assetsDirectory.path}\\build\\winrar.exe",
-          ["x", "-o+", tempFile.path, "*.*", options.destination.path]
+      final winrar = File("${assetsDirectory.path}\\build\\winrar.exe");
+      if(!winrar.existsSync()) {
+        throw "Corrupted installation: missing winrar.exe";
+      }
+
+      process = await startProcess(
+          executable: winrar,
+          args: [
+            "x",
+            "-o+",
+            tempFile.path,
+            "*.*",
+            options.destination.path
+          ]
      );
-      process.stdout.listen((event) {
+      process.stdOutput.listen((data) {
+        print(data);
        final now = DateTime.now().millisecondsSinceEpoch;
-        final data = utf8.decode(event);
-        data.replaceAll("\r", "")
-            .replaceAll("\b", "")
-            .trim()
-            .split("\n")
-            .forEach((entry) {
-          if(entry == "All OK") {
-            options.port.send(FortniteBuildDownloadProgress(100, 0, true));
-            return;
-          }
+        data.replaceAll("\r", "").replaceAll("\b", "").trim();
+        if(data == "All OK") {
+          options.port.send(FortniteBuildDownloadProgress(100, 0, true));
+          return;
+        }

-          final element = _rarProgressRegex.firstMatch(entry)?.group(1);
-          if(element == null) {
-            return;
-          }
+        final element = _rarProgressRegex.firstMatch(data)?.group(1);
+        if(element == null) {
+          return;
+        }

-          final percentage = int.parse(element).toDouble();
-          _onProgress(startTime, now, percentage, true, options);
-        });
-      });
-      process.stderr.listen((event) {
-        final data = utf8.decode(event);
-        options.port.send(data);
+        final percentage = int.parse(element).toDouble();
+        _onProgress(startTime, now, percentage, true, options);
      });
+      process.errorOutput.listen((data) => options.port.send(data));
      break;
    default:
      throw ArgumentError("Unexpected file extension: $extension}");
  }

-  await Future.any([stopped.future, process.exitCode]);
+  await Future.any([stopped.future, watchProcess(process.pid)]);
 }

 void _onProgress(int startTime, int now, double percentage, bool extracting, FortniteBuildDownloadOptions options) {
--- a/common/lib/src/util/dll.dart
+++ b/common/lib/src/util/dll.dart
@@ -19,9 +19,13 @@ Future<bool> hasRebootDllUpdate(int? lastUpdateMs, {int hours = 24, bool force =

 Future<void> downloadCriticalDll(String name, String outputPath) async {
    final response = await http.get(Uri.parse("https://github.com/Auties00/reboot_launcher/tree/master/gui/assets/dlls/$name"));
+    if(response.statusCode != 200) {
+        throw Exception("Cannot download $name: status code ${response.statusCode}");
+    }
+
    final output = File(outputPath);
    await output.parent.create(recursive: true);
-    await output.writeAsBytes(response.bodyBytes);
+    await output.writeAsBytes(response.bodyBytes, flush: true);
 }

 Future<int> downloadRebootDll(String url) async {
@@ -29,12 +33,16 @@ Future<int> downloadRebootDll(String url) async {
    final now = DateTime.now();
    try {
        final response = await http.get(Uri.parse(url));
+        if(response.statusCode != 200) {
+            throw Exception("Cannot download reboot.zip: status code ${response.statusCode}");
+        }
+
        outputDir = await installationDirectory.createTemp("reboot_out");
        final tempZip = File("${outputDir.path}\\reboot.zip");
-        await tempZip.writeAsBytes(response.bodyBytes);
+        await tempZip.writeAsBytes(response.bodyBytes, flush: true);
        await extractFileToDisk(tempZip.path, outputDir.path);
        final rebootDll = File(outputDir.listSync().firstWhere((element) => path.extension(element.path) == ".dll").path);
-        await rebootDllFile.writeAsBytes(await rebootDll.readAsBytes());
+        await rebootDllFile.writeAsBytes(await rebootDll.readAsBytes(), flush: true);
        return now.millisecondsSinceEpoch;
    } finally{
        if(outputDir != null) {
--- a/common/lib/src/util/matchmaker.dart
+++ b/common/lib/src/util/matchmaker.dart
@@ -13,9 +13,10 @@ String? _lastIp;
 String? _lastPort;
 Semaphore _semaphore = Semaphore();

-Future<int> startEmbeddedMatchmaker(bool detached) async => startBackgroundProcess(
+Future<Win32Process> startEmbeddedMatchmaker(bool detached) async => startProcess(
    executable: matchmakerStartExecutable,
-    window: detached
+    window: detached,
+    
 );

 Stream<String?> watchMatchmakingIp() async* {
@@ -74,7 +75,7 @@ Future<void> writeMatchmakingIp(String text) async {
  await matchmakerConfigFile.writeAsString(config.toString(), flush: true);
 }

-Future<bool> isMatchmakerPortFree() async => await pingMatchmaker(kDefaultMatchmakerHost, kDefaultMatchmakerPort.toString()) == null;
+Future<bool> isMatchmakerPortFree() async => await pingMatchmaker(kDefaultMatchmakerHost, kDefaultMatchmakerPort) == null;

 Future<bool> freeMatchmakerPort() async {
  await killProcessByPort(kDefaultMatchmakerPort);
@@ -86,14 +87,14 @@ Future<bool> freeMatchmakerPort() async {
  return false;
 }

-Future<Uri?> pingMatchmaker(String host, String port, [bool wss=false]) async {
+Future<Uri?> pingMatchmaker(String host, int port, [bool wss=false]) async {
  var hostName = _getHostName(host);
  var declaredScheme = _getScheme(host);
  try{
    var uri = Uri(
        scheme: declaredScheme ?? (wss ? "wss" : "ws"),
        host: hostName,
-        port: int.parse(port)
+        port: port
    );
    var completer = Completer<bool>();
    var socket = await WebSocket.connect(uri.toString());
--- a/common/lib/src/util/path.dart
+++ b/common/lib/src/util/path.dart
@@ -72,7 +72,7 @@ extension FortniteVersionExtension on FortniteVersion {
    return output;
  }

-  File? get launcher => findExecutable(location, "FortniteLauncher.exe");
+  File? get launcherExecutable => findExecutable(location, "FortniteLauncher.exe");

  File? get eacExecutable => findExecutable(location, "FortniteClient-Win64-Shipping_EAC.exe");

--- a/common/lib/src/util/process.dart
+++ b/common/lib/src/util/process.dart
@@ -1,12 +1,14 @@
 // ignore_for_file: non_constant_identifier_names

 import 'dart:async';
+import 'dart:convert';
 import 'dart:ffi';
 import 'dart:io';
 import 'dart:isolate';
 import 'dart:math';

 import 'package:ffi/ffi.dart';
+import 'package:reboot_common/src/model/process.dart';
 import 'package:win32/win32.dart';

 import '../constant/game.dart';
@@ -30,15 +32,16 @@ final _CreateRemoteThread = _kernel32.lookupFunction<
        Pointer lpParameter,
        int dwCreationFlags,
        Pointer<Uint32> lpThreadId)>('CreateRemoteThread');
+const chunkSize = 1024;

 Future<void> injectDll(int pid, String dll) async {
-  var process = OpenProcess(
+  final process = OpenProcess(
      0x43A,
      0,
      pid
  );

-  var processAddress = GetProcAddress(
+  final processAddress = GetProcAddress(
      GetModuleHandle("KERNEL32".toNativeUtf16()),
      "LoadLibraryA".toNativeUtf8()
  );
@@ -47,7 +50,7 @@ Future<void> injectDll(int pid, String dll) async {
    throw Exception("Cannot get process address for pid $pid");
  }

-  var dllAddress = VirtualAllocEx(
+  final dllAddress = VirtualAllocEx(
      process,
      nullptr,
      dll.length + 1,
@@ -55,7 +58,7 @@ Future<void> injectDll(int pid, String dll) async {
      0x4
  );

-  var writeMemoryResult = WriteProcessMemory(
+  final writeMemoryResult = WriteProcessMemory(
      process,
      dllAddress,
      dll.toNativeUtf8(),
@@ -67,7 +70,7 @@ Future<void> injectDll(int pid, String dll) async {
    throw Exception("Memory write failed");
  }

-  var createThreadResult = _CreateRemoteThread(
+  final createThreadResult = _CreateRemoteThread(
      process,
      nullptr,
      0,
@@ -81,90 +84,152 @@ Future<void> injectDll(int pid, String dll) async {
    throw Exception("Thread creation failed");
  }

-  var closeResult = CloseHandle(process);
+  final closeResult = CloseHandle(process);
  if(closeResult != 1){
    throw Exception("Cannot close handle");
  }
 }

-bool runElevatedProcess(String executable, String args) {
-  final shellInput = calloc<SHELLEXECUTEINFO>();
-  shellInput.ref.lpFile = executable.toNativeUtf16();
-  shellInput.ref.lpParameters = args.toNativeUtf16();
-  shellInput.ref.nShow = SW_HIDE;
-  shellInput.ref.fMask = ES_AWAYMODE_REQUIRED;
-  shellInput.ref.lpVerb = "runas".toNativeUtf16();
-  shellInput.ref.cbSize = sizeOf<SHELLEXECUTEINFO>();
-  final result = ShellExecuteEx(shellInput) == 1;
-  free(shellInput);
-  return result;
-}
-
-void _startBackgroundProcess(_BackgroundProcessParameters params) {
-  var args = params.args;
-  var concatenatedArgs = args == null ? "" : " ${args.map((entry) => '"$entry"').join(" ")}";
-  var executablePath = TEXT('cmd.exe /k "${params.executable.path}"$concatenatedArgs');
-  var startupInfo = calloc<STARTUPINFO>();
-  var processInfo = calloc<PROCESS_INFORMATION>();
-  var windowFlag = params.window ? CREATE_NEW_CONSOLE : CREATE_NO_WINDOW;
-  var success = CreateProcess(
-      nullptr,
-      executablePath,
-      nullptr,
-      nullptr,
-      FALSE,
-      NORMAL_PRIORITY_CLASS | windowFlag | CREATE_NEW_PROCESS_GROUP,
-      nullptr,
-      TEXT(params.executable.parent.path),
-      startupInfo,
-      processInfo
-  );
-  if (success == 0) {
-    var error = GetLastError();
-    params.port.send("Cannot start process: $error");
+void _startProcess(_ProcessParameters params) {
+  final args = params.args;
+  final port = params.port;
+  final concatenatedArgs = args == null ? "" : " ${args.join(" ")}";
+  final command = params.window ? 'cmd.exe /k ""${params.executable.path}"$concatenatedArgs"' : '"${params.executable.path}"$concatenatedArgs';
+  print(command);
+  final processInfo = calloc<PROCESS_INFORMATION>();
+  final lpStartupInfo = calloc<STARTUPINFO>();
+  lpStartupInfo.ref.cb = sizeOf<STARTUPINFO>();
+  lpStartupInfo.ref.dwFlags |= STARTF_USESTDHANDLES;
+  final securityAttributes = calloc<SECURITY_ATTRIBUTES>();
+  securityAttributes.ref.nLength = sizeOf<SECURITY_ATTRIBUTES>();
+  securityAttributes.ref.bInheritHandle = TRUE;
+  final hStdOutRead = calloc<HANDLE>();
+  final hStdOutWrite = calloc<HANDLE>();
+  final hStdErrRead = calloc<HANDLE>();
+  final hStdErrWrite = calloc<HANDLE>();
+  if (CreatePipe(hStdOutRead, hStdOutWrite, securityAttributes, 0) == 0 || CreatePipe(hStdErrRead, hStdErrWrite, securityAttributes, 0) == 0) {
+    final error = GetLastError();
+    port.send("Cannot create process pipe: $error");
+    return;
+  }
+  
+  if(SetHandleInformation(hStdOutRead.value, HANDLE_FLAG_INHERIT, 0) == 0 || SetHandleInformation(hStdErrRead.value, HANDLE_FLAG_INHERIT, 0) == 0) {
+    final error = GetLastError();
+    port.send("Cannot set process pipe information: $error");
    return;
  }

-  var pid = processInfo.ref.dwProcessId;
-  free(startupInfo);
+  lpStartupInfo.ref.hStdOutput = hStdOutWrite.value;
+  lpStartupInfo.ref.hStdError = hStdErrWrite.value;
+  final success = CreateProcess(
+      nullptr,
+      TEXT(command),
+      nullptr,
+      nullptr,
+      TRUE,
+      NORMAL_PRIORITY_CLASS | (params.window ? CREATE_NEW_CONSOLE : CREATE_NO_WINDOW) | CREATE_NEW_PROCESS_GROUP,
+      nullptr,
+      TEXT(params.executable.parent.path),
+      lpStartupInfo,
+      processInfo
+  );
+  if (success == 0) {
+    final error = GetLastError();
+    port.send("Cannot start process: $error");
+    return;
+  }
+  
+  CloseHandle(processInfo.ref.hProcess);
+  CloseHandle(processInfo.ref.hThread);
+  CloseHandle(hStdOutWrite.value);
+  CloseHandle(hStdErrWrite.value);
+  final pid = processInfo.ref.dwProcessId;
+  free(lpStartupInfo);
  free(processInfo);
-  params.port.send(pid);
+  port.send(PrimitiveWin32Process(
+      pid: pid,
+      stdOutputHandle: hStdOutRead.value,
+      errorOutputHandle: hStdErrRead.value
+  ));
 }

-class _BackgroundProcessParameters {
+class _PipeReaderParams {
+  final int handle;
+  final SendPort port;
+
+  _PipeReaderParams(this.handle, this.port);
+}
+
+void _pipeToStreamChannelled(_PipeReaderParams params) {
+  final buf = calloc<Uint8>(chunkSize);
+  while(true) {
+    final bytesReadPtr = calloc<Uint32>();
+    final success = ReadFile(params.handle, buf, chunkSize, bytesReadPtr, nullptr);
+    if (success == FALSE) {
+      break;
+    }
+
+    final bytesRead = bytesReadPtr.value;
+    if (bytesRead == 0) {
+      break;
+    }
+
+    final lines = utf8.decode(buf.asTypedList(bytesRead)).split('\n');
+    for(final line in lines) {
+      params.port.send(line);
+    }
+  }
+
+  CloseHandle(params.handle);
+  free(buf);
+  Isolate.current.kill();
+}
+
+Stream<String> _pipeToStream(int pipeHandle) {
+  final port = ReceivePort();
+  Isolate.spawn(
+      _pipeToStreamChannelled,
+      _PipeReaderParams(pipeHandle, port.sendPort)
+  );
+  return port.map((event) => event as String);
+}
+
+class _ProcessParameters {
  File executable;
  List<String>? args;
  bool window;
  SendPort port;

-  _BackgroundProcessParameters(this.executable, this.args, this.window, this.port);
+  _ProcessParameters(this.executable, this.args, this.window, this.port);
 }

-Future<int> startBackgroundProcess({required File executable, List<String>? args, bool window = false}) async {
-  var completer = Completer<int>();
-  var port = ReceivePort();
-  port.listen((message) => message is int ? completer.complete(message) : completer.completeError(message));
-  var isolate = await Isolate.spawn(
-      _startBackgroundProcess,
-      _BackgroundProcessParameters(executable, args, window, port.sendPort),
+Future<Win32Process> startProcess({required File executable, List<String>? args, bool output = true, bool window = false}) async {
+  final completer = Completer<Win32Process>();
+  final port = ReceivePort();
+  port.listen((message) {
+    if(message is PrimitiveWin32Process) {
+      completer.complete(Win32Process(
+          pid: message.pid,
+          stdOutput: _pipeToStream(message.stdOutputHandle),
+          errorOutput: _pipeToStream(message.errorOutputHandle)
+      ));
+    } else {
+      completer.completeError(message);
+    }
+  });
+  Isolate.spawn(
+      _startProcess,
+      _ProcessParameters(executable, args, window, port.sendPort),
      errorsAreFatal: true
  );
-  var result = await completer.future;
-  isolate.kill(priority: Isolate.immediate);
-  return result;
+  return await completer.future;
 }

-int _NtResumeProcess(int hWnd) {
-  final function = _ntdll.lookupFunction<Int32 Function(IntPtr hWnd),
-      int Function(int hWnd)>('NtResumeProcess');
-  return function(hWnd);
-}
+final _NtResumeProcess = _ntdll.lookupFunction<Int32 Function(IntPtr hWnd),
+    int Function(int hWnd)>('NtResumeProcess');

-int _NtSuspendProcess(int hWnd) {
-  final function = _ntdll.lookupFunction<Int32 Function(IntPtr hWnd),
-      int Function(int hWnd)>('NtSuspendProcess');
-  return function(hWnd);
-}
+final _NtSuspendProcess = _ntdll.lookupFunction<Int32 Function(IntPtr hWnd),
+    int Function(int hWnd)>('NtSuspendProcess');

 bool suspend(int pid) {
  final processHandle = OpenProcess(PROCESS_SUSPEND_RESUME, FALSE, pid);
@@ -214,7 +279,7 @@ List<String> createRebootArgs(String username, String password, bool host, bool
  }

  password = password.isNotEmpty ? password : "Rebooted";
-  var args = [
+  final args = [
    "-epicapp=Fortnite",
    "-epicenv=Prod",
    "-epiclocale=en-us",