<feat: New project structure>

<feat: New release>

common/lib/common.dart

@@ -0,0 +1,23 @@
+export 'package:reboot_common/src/constant/authenticator.dart';
+export 'package:reboot_common/src/constant/game.dart';
+export 'package:reboot_common/src/constant/matchmaker.dart';
+export 'package:reboot_common/src/constant/os.dart';
+export 'package:reboot_common/src/constant/supabase.dart';
+
+
+export 'package:reboot_common/src/model/fortnite_build.dart';
+export 'package:reboot_common/src/model/fortnite_version.dart';
+export 'package:reboot_common/src/model/game_instance.dart';
+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/util/authenticator.dart';
+export 'package:reboot_common/src/util/build.dart';
+export 'package:reboot_common/src/util/matchmaker.dart';
+export 'package:reboot_common/src/util/network.dart';
+export 'package:reboot_common/src/util/patcher.dart';
+export 'package:reboot_common/src/util/path.dart';
+export 'package:reboot_common/src/util/process.dart';
+export 'package:reboot_common/src/util/reboot.dart';

common/lib/src/constant/authenticator.dart

@@ -0,0 +1,2 @@
+const String kDefaultAuthenticatorHost = "127.0.0.1";
+const String kDefaultAuthenticatorPort = "3551";

common/lib/src/constant/game.dart

@@ -0,0 +1,13 @@
+const String kDefaultPlayerName = "Player";
+const String shutdownLine = "FOnlineSubsystemGoogleCommon::Shutdown()";
+const List<String> corruptedBuildErrors = [
+  "when 0 bytes remain",
+  "Pak chunk signature verification failed!"
+];
+const List<String> cannotConnectErrors = [
+  "port 3551 failed: Connection refused",
+  "Unable to login to Fortnite servers",
+  "HTTP 400 response from ",
+  "Network failure when attempting to check platform restrictions",
+  "UOnlineAccountCommon::ForceLogout"
+];

common/lib/src/constant/matchmaker.dart

@@ -0,0 +1,2 @@
+const String kDefaultMatchmakerHost = "127.0.0.1";
+const String kDefaultMatchmakerPort = "8080";

common/lib/src/constant/os.dart

@@ -0,0 +1 @@
+const int appBarWidth = 2;

common/lib/src/constant/supabase.dart

@@ -0,0 +1,2 @@
+const String supabaseUrl = 'https://drxuhdtyigthmjfhjgfl.supabase.co';
+const String supabaseAnonKey = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6ImRyeHVoZHR5aWd0aG1qZmhqZ2ZsIiwicm9sZSI6ImFub24iLCJpYXQiOjE2ODUzMDU4NjYsImV4cCI6MjAwMDg4MTg2Nn0.unuO67xf9CZgHi-3aXmC5p3RAktUfW7WwqDY-ccFN1M';

common/lib/src/model/fortnite_build.dart

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+class FortniteBuild {
+  final String version;
+  final String link;
+
+  FortniteBuild({required this.version, required this.link});
+}

common/lib/src/model/fortnite_version.dart

@@ -0,0 +1,17 @@
+import 'dart:io';
+
+class FortniteVersion {
+  String name;
+  Directory location;
+
+  FortniteVersion.fromJson(json)
+      : name = json["name"],
+        location = Directory(json["location"]);
+
+  FortniteVersion({required this.name, required this.location});
+
+  Map<String, dynamic> toJson() => {
+    'name': name,
+    'location': location.path
+  };
+}

common/lib/src/model/game_instance.dart

@@ -0,0 +1,48 @@
+import 'dart:io';
+
+
+class GameInstance {
+  final int gamePid;
+  final int? launcherPid;
+  final int? eacPid;
+  int? watchPid;
+  bool hosting;
+  bool tokenError;
+  bool linkedHosting;
+
+  GameInstance(this.gamePid, this.launcherPid, this.eacPid, this.hosting, this.linkedHosting)
+      : tokenError = false,
+        assert(!linkedHosting || !hosting, "Only a game instance can have a linked hosting server");
+
+  GameInstance.fromJson(Map<String, dynamic>? json) :
+        gamePid = json?["game"] ?? -1,
+        launcherPid = json?["launcher"],
+        eacPid = json?["eac"],
+        watchPid = json?["watchPid"],
+        hosting = json?["hosting"] ?? false,
+        tokenError = json?["tokenError"] ?? false,
+        linkedHosting = json?["linkedHosting"] ?? false;
+
+  void kill() {
+    Process.killPid(gamePid, ProcessSignal.sigabrt);
+    if(launcherPid != null) {
+      Process.killPid(launcherPid!, ProcessSignal.sigabrt);
+    }
+    if(eacPid != null) {
+      Process.killPid(eacPid!, ProcessSignal.sigabrt);
+    }
+    if(watchPid != null) {
+      Process.killPid(watchPid!, ProcessSignal.sigabrt);
+    }
+  }
+
+  Map<String, dynamic> toJson() => {
+    'game': gamePid,
+    'launcher': launcherPid,
+    'eac': eacPid,
+    'watch': watchPid,
+    'hosting': hosting,
+    'tokenError': tokenError,
+    'linkedHosting': linkedHosting
+  };
+}

common/lib/src/model/server_result.dart

@@ -0,0 +1,23 @@
+class ServerResult {
+  final ServerResultType type;
+  final Object? error;
+  final StackTrace? stackTrace;
+
+  ServerResult(this.type, {this.error, this.stackTrace});
+}
+
+enum ServerResultType {
+  missingHostError,
+  missingPortError,
+  illegalPortError,
+  freeingPort,
+  freePortSuccess,
+  freePortError,
+  pingingRemote,
+  pingingLocal,
+  pingError,
+  startSuccess,
+  startError;
+
+  bool get isError => name.contains("Error");
+}

common/lib/src/model/server_type.dart

@@ -0,0 +1,5 @@
+enum ServerType {
+  embedded,
+  remote,
+  local
+}

common/lib/src/model/update_status.dart

@@ -0,0 +1,6 @@
+enum UpdateStatus {
+  waiting,
+  started,
+  success,
+  error
+}

common/lib/src/model/update_timer.dart

@@ -0,0 +1,6 @@
+enum UpdateTimer {
+  never,
+  hour,
+  day,
+  week
+}

common/lib/src/util/authenticator.dart

@@ -0,0 +1,79 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:process_run/process_run.dart';
+import 'package:reboot_common/common.dart';
+import 'package:shelf/shelf_io.dart';
+import 'package:shelf_proxy/shelf_proxy.dart';
+
+
+final authenticatorLogFile = File("${logsDirectory.path}\\authenticator.log");
+final authenticatorDirectory = Directory("${assetsDirectory.path}\\lawin");
+final authenticatorExecutable = File("${authenticatorDirectory.path}\\run.bat");
+
+Future<Process> startEmbeddedAuthenticator(bool detached) async {
+  if(!authenticatorExecutable.existsSync()) {
+    throw StateError("${authenticatorExecutable.path} doesn't exist");
+  }
+
+  var process = await Process.start(
+      authenticatorExecutable.path,
+      [],
+      workingDirectory: authenticatorDirectory.path,
+      mode: detached ? ProcessStartMode.detached : ProcessStartMode.normal
+  );
+  if(!detached) {
+    authenticatorLogFile.createSync(recursive: true);
+    process.outLines.forEach((element) => authenticatorLogFile.writeAsStringSync("$element\n", mode: FileMode.append));
+    process.errLines.forEach((element) => authenticatorLogFile.writeAsStringSync("$element\n", mode: FileMode.append));
+  }
+  return process;
+}
+
+Future<HttpServer> startRemoteAuthenticatorProxy(Uri uri) async => await serve(proxyHandler(uri), kDefaultAuthenticatorHost, int.parse(kDefaultAuthenticatorPort));
+
+Future<bool> isAuthenticatorPortFree() async => isPortFree(int.parse(kDefaultAuthenticatorPort));
+
+Future<bool> freeAuthenticatorPort() async {
+  var releaseBat = File("${assetsDirectory.path}\\lawin\\kill_lawin.bat");
+  await Process.run(releaseBat.path, []);
+  var standardResult = await isAuthenticatorPortFree();
+  if(standardResult) {
+    return true;
+  }
+
+  var elevatedResult = await runElevatedProcess(releaseBat.path, "");
+  if(!elevatedResult) {
+    return false;
+  }
+
+  return await isAuthenticatorPortFree();
+}
+
+Future<Uri?> pingSelf(String port) async => ping(kDefaultAuthenticatorHost, port);
+
+Future<Uri?> ping(String host, String 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),
+        path: "unknown"
+    );
+    var client = HttpClient()
+      ..connectionTimeout = const Duration(seconds: 5);
+    var request = await client.getUrl(uri);
+    var response = await request.close();
+    var body = utf8.decode(await response.single);
+    return body.contains("epicgames") || body.contains("lawinserver") ? uri : null;
+  }catch(_){
+    return https || declaredScheme != null ? null : await ping(host, port, true);
+  }
+}
+
+String? _getHostName(String host) => host.replaceFirst("http://", "").replaceFirst("https://", "");
+
+String? _getScheme(String host) => host.startsWith("http://") ? "http" : host.startsWith("https://") ? "https" : null;
+

common/lib/src/util/build.dart

@@ -0,0 +1,152 @@
+import 'dart:async';
+import 'dart:io';
+import 'dart:isolate';
+
+import 'package:http/http.dart' as http;
+import 'package:path/path.dart' as path;
+import 'package:reboot_common/common.dart';
+
+final Uri _manifestSourceUrl = Uri.parse(
+    "https://raw.githubusercontent.com/simplyblk/Fortnitebuilds/main/README.md");
+
+Future<List<FortniteBuild>> fetchBuilds(ignored) async {
+  var response = await http.get(_manifestSourceUrl);
+  if (response.statusCode != 200) {
+    throw Exception("Erroneous status code: ${response.statusCode}");
+  }
+
+  var results = <FortniteBuild>[];
+  for (var line in response.body.split("\n")) {
+    if(!line.startsWith("|")) {
+      continue;
+    }
+
+    var parts = line.substring(1, line.length - 1).split("|");
+    if(parts.isEmpty) {
+      continue;
+    }
+
+    var link = parts.last.trim();
+    if(!link.endsWith(".zip") && !link.endsWith(".rar")) {
+      continue;
+    }
+
+    var version = parts.first.trim();
+    version = version.substring(0, version.indexOf("-"));
+    results.add(FortniteBuild(version: "Fortnite $version", link: link));
+  }
+
+  return results;
+}
+
+
+Future<void> downloadArchiveBuild(ArchiveDownloadOptions options) async {
+  var stopped = _setupLifecycle(options);
+  var outputDir = Directory("${options.destination.path}\\.build");
+  outputDir.createSync(recursive: true);
+  try {
+    options.destination.createSync(recursive: true);
+    var fileName = options.archiveUrl.substring(options.archiveUrl.lastIndexOf("/") + 1);
+    var extension = path.extension(fileName);
+    var tempFile = File("${outputDir.path}\\$fileName");
+    if(tempFile.existsSync()) {
+      tempFile.deleteSync(recursive: true);
+    }
+
+    await _download(options, tempFile, stopped);
+    await _extract(stopped, extension, tempFile, options);
+    delete(outputDir);
+  } catch(message) {
+    throw Exception("Cannot download build: $message");
+  }
+}
+
+Future<void> _download(ArchiveDownloadOptions options, File tempFile, Completer<dynamic> stopped) async {
+  var client = http.Client();
+  var request = http.Request("GET", Uri.parse(options.archiveUrl));
+  request.headers['Connection'] = 'Keep-Alive';
+  var response = await client.send(request);
+  if (response.statusCode != 200) {
+    throw Exception("Erroneous status code: ${response.statusCode}");
+  }
+
+  var startTime = DateTime.now().millisecondsSinceEpoch;
+  var length = response.contentLength!;
+  var received = 0;
+  var sink = tempFile.openWrite();
+  var subscription = response.stream.listen((data) async {
+    received += data.length;
+    var now = DateTime.now();
+    var progress = (received / length) * 100;
+    var msLeft = startTime + (now.millisecondsSinceEpoch - startTime) * length / received - now.millisecondsSinceEpoch;
+    var minutesLeft = (msLeft / 1000 / 60).round();
+    options.port.send(ArchiveDownloadProgress(progress, minutesLeft, false));
+    sink.add(data);
+  });
+
+  await Future.any([stopped.future, subscription.asFuture()]);
+  if(stopped.isCompleted) {
+    await subscription.cancel();
+  }else {
+    await sink.flush();
+    await sink.close();
+    await sink.done;
+  }
+}
+
+Future<void> _extract(Completer<dynamic> stopped, String extension, File tempFile, ArchiveDownloadOptions options) async {
+  if(stopped.isCompleted) {
+    return;
+  }
+
+  options.port.send(ArchiveDownloadProgress(0, -1, true));
+  Process? process;
+  switch (extension.toLowerCase()) {
+    case '.zip':
+      process = await Process.start(
+          'tar',
+          ['-xf', tempFile.path, '-C', options.destination.path],
+          mode: ProcessStartMode.inheritStdio
+      );
+      break;
+    case '.rar':
+      process = await Process.start(
+          '${assetsDirectory.path}\\misc\\winrar.exe',
+          ['x', tempFile.path, '*.*', options.destination.path],
+          mode: ProcessStartMode.inheritStdio
+      );
+      break;
+    default:
+      throw ArgumentError("Unexpected file extension: $extension}");
+  }
+
+  await Future.any([stopped.future, process.exitCode]);
+}
+
+Completer<dynamic> _setupLifecycle(ArchiveDownloadOptions options) {
+  var stopped = Completer();
+  var lifecyclePort = ReceivePort();
+  lifecyclePort.listen((message) {
+    if(message == "kill") {
+      stopped.complete();
+    }
+  });
+  options.port.send(lifecyclePort.sendPort);
+  return stopped;
+}
+
+class ArchiveDownloadOptions {
+  String archiveUrl;
+  Directory destination;
+  SendPort port;
+
+  ArchiveDownloadOptions(this.archiveUrl, this.destination, this.port);
+}
+
+class ArchiveDownloadProgress {
+  final double progress;
+  final int minutesLeft;
+  final bool extracting;
+
+  ArchiveDownloadProgress(this.progress, this.minutesLeft, this.extracting);
+}

common/lib/src/util/matchmaker.dart

@@ -0,0 +1,38 @@
+import 'dart:io';
+
+import 'package:ini/ini.dart';
+
+import 'package:reboot_common/common.dart';
+
+Future<void> writeMatchmakingIp(String text) async {
+  var file = File("${assetsDirectory.path}\\lawin\\Config\\config.ini");
+  if(!file.existsSync()){
+    return;
+  }
+
+  var splitIndex = text.indexOf(":");
+  var ip = splitIndex != -1 ? text.substring(0, splitIndex) : text;
+  var port = splitIndex != -1 ? text.substring(splitIndex + 1) : "7777";
+  var config = Config.fromString(file.readAsStringSync());
+  config.set("GameServer", "ip", ip);
+  config.set("GameServer", "port", port);
+  file.writeAsStringSync(config.toString());
+}
+
+Future<bool> isMatchmakerPortFree() async => isPortFree(int.parse(kDefaultMatchmakerPort));
+
+Future<bool> freeMatchmakerPort() async {
+  var releaseBat = File("${assetsDirectory.path}\\lawin\\kill_matchmaker.bat");
+  await Process.run(releaseBat.path, []);
+  var standardResult = await isMatchmakerPortFree();
+  if(standardResult) {
+    return true;
+  }
+
+  var elevatedResult = await runElevatedProcess(releaseBat.path, "");
+  if(!elevatedResult) {
+    return false;
+  }
+
+  return await isMatchmakerPortFree();
+}

common/lib/src/util/network.dart

@@ -0,0 +1,22 @@
+import 'dart:io';
+
+import 'package:reboot_common/common.dart';
+
+bool isLocalHost(String host) => host.trim() == "127.0.0.1"
+    || host.trim().toLowerCase() == "localhost"
+    || host.trim() == "0.0.0.0";
+
+Future<bool> isPortFree(int port) async {
+  try {
+    final server = await ServerSocket.bind(InternetAddress.anyIPv4, port);
+    await server.close();
+    return true;
+  } catch (e) {
+    return false;
+  }
+}
+
+Future<void> resetWinNat() async {
+  var binary = File("${authenticatorDirectory.path}\\winnat.bat");
+  await runElevatedProcess(binary.path, "");
+}

common/lib/src/util/patcher.dart

@@ -0,0 +1,58 @@
+import 'dart:io';
+import 'dart:typed_data';
+
+final Uint8List _originalHeadless = Uint8List.fromList([
+  45, 0, 105, 0, 110, 0, 118, 0, 105, 0, 116, 0, 101, 0, 115, 0, 101, 0, 115, 0, 115, 0, 105, 0, 111, 0, 110, 0, 32, 0, 45, 0, 105, 0, 110, 0, 118, 0, 105, 0, 116, 0, 101, 0, 102, 0, 114, 0, 111, 0, 109, 0, 32, 0, 45, 0, 112, 0, 97, 0, 114, 0, 116, 0, 121, 0, 95, 0, 106, 0, 111, 0, 105, 0, 110, 0, 105, 0, 110, 0, 102, 0, 111, 0, 95, 0, 116, 0, 111, 0, 107, 0, 101, 0, 110, 0, 32, 0, 45, 0, 114, 0, 101, 0, 112, 0, 108, 0, 97, 0, 121, 0
+]);
+
+final Uint8List _patchedHeadless = Uint8List.fromList([
+  45, 0, 108, 0, 111, 0, 103, 0, 32, 0, 45, 0, 110, 0, 111, 0, 115, 0, 112, 0, 108, 0, 97, 0, 115, 0, 104, 0, 32, 0, 45, 0, 110, 0, 111, 0, 115, 0, 111, 0, 117, 0, 110, 0, 100, 0, 32, 0, 45, 0, 110, 0, 117, 0, 108, 0, 108, 0, 114, 0, 104, 0, 105, 0, 32, 0, 45, 0, 117, 0, 115, 0, 101, 0, 111, 0, 108, 0, 100, 0, 105, 0, 116, 0, 101, 0, 109, 0, 99, 0, 97, 0, 114, 0, 100, 0, 115, 0, 32, 0, 32, 0, 32, 0, 32, 0, 32, 0, 32, 0, 32, 0
+]);
+
+final Uint8List _originalMatchmaking = Uint8List.fromList([
+  63, 0, 69, 0, 110, 0, 99, 0, 114, 0, 121, 0, 112, 0, 116, 0, 105, 0, 111, 0, 110, 0, 84, 0, 111, 0, 107, 0, 101, 0, 110, 0, 61
+]);
+
+final Uint8List _patchedMatchmaking = Uint8List.fromList([
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+]);
+
+Future<bool> patchHeadless(File file) async =>
+    _patch(file, _originalHeadless, _patchedHeadless);
+
+Future<bool> patchMatchmaking(File file) async =>
+    await _patch(file, _originalMatchmaking, _patchedMatchmaking);
+
+Future<bool> _patch(File file, Uint8List original, Uint8List patched) async {
+  try {
+    if(original.length != patched.length){
+      throw Exception("Cannot mutate length of binary file");
+    }
+
+    var read = await file.readAsBytes();
+    var length = await file.length();
+    var offset = 0;
+    var counter = 0;
+    while(offset < length){
+      if(read[offset] == original[counter]){
+        counter++;
+      }else {
+        counter = 0;
+      }
+
+      offset++;
+      if(counter == original.length){
+        for(var index = 0; index < patched.length; index++){
+          read[offset - counter + index] = patched[index];
+        }
+
+        await file.writeAsBytes(read, mode: FileMode.write);
+        return true;
+      }
+    }
+
+    return false;
+  }catch(_){
+    return false;
+  }
+}

common/lib/src/util/path.dart

@@ -0,0 +1,80 @@
+import 'dart:io';
+import 'dart:isolate';
+
+import 'package:reboot_common/common.dart';
+import 'package:path/path.dart' as path;
+
+Directory get installationDirectory =>
+    File(Platform.resolvedExecutable).parent;
+
+Directory get assetsDirectory {
+  var directory = Directory("${installationDirectory.path}\\data\\flutter_assets\\assets");
+  if(directory.existsSync()) {
+    return directory;
+  }
+
+  return installationDirectory;
+}
+
+Directory get logsDirectory =>
+    Directory("${installationDirectory.path}\\logs");
+
+Directory get settingsDirectory =>
+    Directory("${installationDirectory.path}\\settings");
+
+Directory get tempDirectory =>
+    Directory(Platform.environment["Temp"]!);
+
+Future<bool> delete(FileSystemEntity file) async {
+  try {
+    await file.delete(recursive: true);
+    return true;
+  }catch(_){
+    return Future.delayed(const Duration(seconds: 5)).then((value) async {
+      try {
+        await file.delete(recursive: true);
+        return true;
+      }catch(_){
+        return false;
+      }
+    });
+  }
+}
+
+extension FortniteVersionExtension on FortniteVersion {
+  static File? findExecutable(Directory directory, String name) {
+    try{
+      var result = directory.listSync(recursive: true)
+          .firstWhere((element) => path.basename(element.path) == name);
+      return File(result.path);
+    }catch(_){
+      return null;
+    }
+  }
+
+  Future<File?> get executable async {
+    var result = findExecutable(location, "FortniteClient-Win64-Shipping-Reboot.exe");
+    if(result != null) {
+      return result;
+    }
+
+    var original = findExecutable(location, "FortniteClient-Win64-Shipping.exe");
+    if(original == null) {
+      return null;
+    }
+
+    var output = File("${original.parent.path}\\FortniteClient-Win64-Shipping-Reboot.exe");
+    await original.copy(output.path);
+    await Future.wait([
+      Isolate.run(() => patchMatchmaking(output)),
+      Isolate.run(() => patchHeadless(output)),
+    ]);
+    return output;
+  }
+
+  File? get launcher => findExecutable(location, "FortniteLauncher.exe");
+
+  File? get eacExecutable => findExecutable(location, "FortniteClient-Win64-Shipping_EAC.exe");
+
+  File? get splashBitmap => findExecutable(location, "Splash.bmp");
+}

common/lib/src/util/process.dart

@@ -0,0 +1,176 @@
+// ignore_for_file: non_constant_identifier_names
+
+import 'dart:async';
+import 'dart:ffi';
+import 'dart:isolate';
+
+import 'package:ffi/ffi.dart';
+import 'package:win32/win32.dart';
+
+final _ntdll = DynamicLibrary.open('ntdll.dll');
+final _kernel32 = DynamicLibrary.open('kernel32.dll');
+final _CreateRemoteThread = _kernel32.lookupFunction<
+    IntPtr Function(
+        IntPtr hProcess,
+        Pointer<SECURITY_ATTRIBUTES> lpThreadAttributes,
+        IntPtr dwStackSize,
+        Pointer loadLibraryAddress,
+        Pointer lpParameter,
+        Uint32 dwCreationFlags,
+        Pointer<Uint32> lpThreadId),
+    int Function(
+        int hProcess,
+        Pointer<SECURITY_ATTRIBUTES> lpThreadAttributes,
+        int dwStackSize,
+        Pointer loadLibraryAddress,
+        Pointer lpParameter,
+        int dwCreationFlags,
+        Pointer<Uint32> lpThreadId)>('CreateRemoteThread');
+
+Future<void> injectDll(int pid, String dll) async {
+  var process = OpenProcess(
+      0x43A,
+      0,
+      pid
+  );
+
+  var processAddress = GetProcAddress(
+      GetModuleHandle("KERNEL32".toNativeUtf16()),
+      "LoadLibraryA".toNativeUtf8()
+  );
+
+  if (processAddress == nullptr) {
+    throw Exception("Cannot get process address for pid $pid");
+  }
+
+  var dllAddress = VirtualAllocEx(
+      process,
+      nullptr,
+      dll.length + 1,
+      0x3000,
+      0x4
+  );
+
+  var writeMemoryResult = WriteProcessMemory(
+      process,
+      dllAddress,
+      dll.toNativeUtf8(),
+      dll.length,
+      nullptr
+  );
+
+  if (writeMemoryResult != 1) {
+    throw Exception("Memory write failed");
+  }
+
+  var createThreadResult = _CreateRemoteThread(
+      process,
+      nullptr,
+      0,
+      processAddress,
+      dllAddress,
+      0,
+      nullptr
+  );
+
+  if (createThreadResult == -1) {
+    throw Exception("Thread creation failed");
+  }
+
+  var closeResult = CloseHandle(process);
+  if(closeResult != 1){
+    throw Exception("Cannot close handle");
+  }
+}
+
+Future<bool> runElevatedProcess(String executable, String args) async {
+  var shellInput = calloc<SHELLEXECUTEINFO>();
+  shellInput.ref.lpFile = executable.toNativeUtf16();
+  shellInput.ref.lpParameters = args.toNativeUtf16();
+  shellInput.ref.nShow = SW_HIDE;
+  shellInput.ref.fMask = ES_AWAYMODE_REQUIRED;
+  shellInput.ref.lpVerb = "runas".toNativeUtf16();
+  shellInput.ref.cbSize = sizeOf<SHELLEXECUTEINFO>();
+  var shellResult = ShellExecuteEx(shellInput);
+  return shellResult == 1;
+}
+
+
+int startBackgroundProcess(String executable, List<String> args) {
+  var executablePath = TEXT('$executable ${args.map((entry) => '"$entry"').join(" ")}');
+  var startupInfo = calloc<STARTUPINFO>();
+  var processInfo = calloc<PROCESS_INFORMATION>();
+  var success = CreateProcess(
+      nullptr,
+      executablePath,
+      nullptr,
+      nullptr,
+      FALSE,
+      CREATE_NO_WINDOW,
+      nullptr,
+      nullptr,
+      startupInfo,
+      processInfo
+  );
+  if (success == 0) {
+    var error = GetLastError();
+    throw Exception("Cannot start process: $error");
+  }
+
+  var pid = processInfo.ref.dwProcessId;
+  free(startupInfo);
+  free(processInfo);
+  return pid;
+}
+
+int _NtResumeProcess(int hWnd) {
+  final function = _ntdll.lookupFunction<Int32 Function(IntPtr hWnd),
+      int Function(int hWnd)>('NtResumeProcess');
+  return function(hWnd);
+}
+
+int _NtSuspendProcess(int hWnd) {
+  final function = _ntdll.lookupFunction<Int32 Function(IntPtr hWnd),
+      int Function(int hWnd)>('NtSuspendProcess');
+  return function(hWnd);
+}
+
+bool suspend(int pid) {
+  final processHandle = OpenProcess(PROCESS_SUSPEND_RESUME, FALSE, pid);
+  final result = _NtSuspendProcess(processHandle);
+  CloseHandle(processHandle);
+  return result == 0;
+}
+
+bool resume(int pid) {
+  final processHandle = OpenProcess(PROCESS_SUSPEND_RESUME, FALSE, pid);
+  final result = _NtResumeProcess(processHandle);
+  CloseHandle(processHandle);
+  return result == 0;
+}
+
+void _watchProcess(int pid) {
+  final processHandle = OpenProcess(SYNCHRONIZE, FALSE, pid);
+  WaitForSingleObject(processHandle, INFINITE);
+  CloseHandle(processHandle);
+}
+
+Future<bool> watchProcess(int pid) async {
+  var completer = Completer<bool>();
+  var exitPort = ReceivePort();
+  exitPort.listen((_) {
+    if(!completer.isCompleted) {
+      completer.complete(true);
+    }
+  });
+  var errorPort = ReceivePort();
+  errorPort.listen((_) => completer.complete(false));
+  await Isolate.spawn(
+      _watchProcess,
+      pid,
+      onExit: exitPort.sendPort,
+      onError: errorPort.sendPort,
+      errorsAreFatal: true
+  );
+  return completer.future;
+}

common/lib/src/util/reboot.dart

@@ -0,0 +1,92 @@
+import 'dart:io';
+import 'dart:math';
+
+import 'package:archive/archive_io.dart';
+import 'package:crypto/crypto.dart';
+import 'package:http/http.dart' as http;
+import 'package:path/path.dart' as path;
+import 'package:reboot_common/common.dart';
+
+const String rebootDownloadUrl =
+    "https://nightly.link/Milxnor/Project-Reboot-3.0/workflows/msbuild/main/Release.zip";
+final File rebootDllFile = File("${assetsDirectory.path}\\dlls\\reboot.dll");
+
+List<String> createRebootArgs(String username, String password, bool host, String additionalArgs) {
+    if(password.isEmpty) {
+        username = username.isEmpty ? kDefaultPlayerName : username;
+        username = host ? "$username${Random().nextInt(1000)}" : username;
+        username = '$username@projectreboot.dev';
+    }
+    password = password.isNotEmpty ? password : "Rebooted";
+    var args = [
+        "-epicapp=Fortnite",
+        "-epicenv=Prod",
+        "-epiclocale=en-us",
+        "-epicportal",
+        "-skippatchcheck",
+        "-nobe",
+        "-fromfl=eac",
+        "-fltoken=3db3ba5dcbd2e16703f3978d",
+        "-caldera=eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9.eyJhY2NvdW50X2lkIjoiYmU5ZGE1YzJmYmVhNDQwN2IyZjQwZWJhYWQ4NTlhZDQiLCJnZW5lcmF0ZWQiOjE2Mzg3MTcyNzgsImNhbGRlcmFHdWlkIjoiMzgxMGI4NjMtMmE2NS00NDU3LTliNTgtNGRhYjNiNDgyYTg2IiwiYWNQcm92aWRlciI6IkVhc3lBbnRpQ2hlYXQiLCJub3RlcyI6IiIsImZhbGxiYWNrIjpmYWxzZX0.VAWQB67RTxhiWOxx7DBjnzDnXyyEnX7OljJm-j2d88G_WgwQ9wrE6lwMEHZHjBd1ISJdUO1UVUqkfLdU5nofBQ",
+        "-AUTH_LOGIN=$username",
+        "-AUTH_PASSWORD=${password.isNotEmpty ? password : "Rebooted"}",
+        "-AUTH_TYPE=epic"
+    ];
+
+    if(host){
+        args.addAll([
+            "-nullrhi",
+            "-nosplash",
+            "-nosound",
+        ]);
+    }
+
+    if(additionalArgs.isNotEmpty){
+        args.addAll(additionalArgs.split(" "));
+    }
+
+    return args;
+}
+
+
+Future<int> downloadRebootDll(String url, int? lastUpdateMs) async {
+    Directory? outputDir;
+    var now = DateTime.now();
+    try {
+        var lastUpdate = await _getLastUpdate(lastUpdateMs);
+        var exists = await rebootDllFile.exists();
+        if (lastUpdate != null && now.difference(lastUpdate).inHours <= 24 && exists) {
+            return lastUpdateMs!;
+        }
+
+        var response = await http.get(Uri.parse(rebootDownloadUrl));
+        outputDir = await installationDirectory.createTemp("reboot_out");
+        var tempZip = File("${outputDir.path}\\reboot.zip");
+        await tempZip.writeAsBytes(response.bodyBytes);
+        await extractFileToDisk(tempZip.path, outputDir.path);
+        var rebootDll = File(outputDir.listSync().firstWhere((element) => path.extension(element.path) == ".dll").path);
+        if (!exists || sha1.convert(await rebootDllFile.readAsBytes()) != sha1.convert(await rebootDll.readAsBytes())) {
+            await rebootDllFile.writeAsBytes(await rebootDll.readAsBytes());
+        }
+
+        return now.millisecondsSinceEpoch;
+    }catch(message) {
+        if(url == rebootDownloadUrl){
+            var asset = File('${assetsDirectory.path}\\dlls\\reboot.dll');
+            await rebootDllFile.writeAsBytes(asset.readAsBytesSync());
+            return now.millisecondsSinceEpoch;
+        }
+
+        throw Exception("Cannot download reboot.zip, invalid zip: $message");
+    }finally{
+        if(outputDir != null) {
+            delete(outputDir);
+        }
+    }
+}
+
+Future<DateTime?> _getLastUpdate(int? lastUpdateMs) async {
+  return lastUpdateMs != null
+      ? DateTime.fromMillisecondsSinceEpoch(lastUpdateMs)
+      : null;
+}

common/pubspec.yaml

@@ -0,0 +1,21 @@
+name: reboot_common
+version: "1.0.0"
+
+publish_to: 'none'
+
+environment:
+  sdk: ">=2.19.0 <=3.3.3"
+
+dependencies:
+  win32: 3.0.0
+  ffi: ^2.1.0
+  path: ^1.8.3
+  http: ^1.1.0
+  crypto: ^3.0.2
+  archive: ^3.3.7
+  ini: ^2.1.0
+  shelf_proxy: ^1.0.2
+  process_run: ^0.13.1
+
+dev_dependencies:
+  flutter_lints: ^2.0.1