feat: root installation (wip)

lib/services/root_api.dart

@@ -0,0 +1,85 @@
+import 'dart:io';
+
+import 'package:injectable/injectable.dart';
+import 'package:root/root.dart';
+
+@lazySingleton
+class RootAPI {
+  final String managerDirPath = "/data/adb/revanced_manager";
+  final String postFsDataDirPath = "/data/adb/post-fs-data.d";
+  final String serviceDDirPath = "/data/adb/service.d";
+
+  bool deleteApp(String packageName) {
+    try {
+      File('$managerDirPath/$packageName.apk').deleteSync();
+      File('$serviceDDirPath/$packageName.sh').deleteSync();
+      File('$postFsDataDirPath/$packageName.sh').deleteSync();
+      return true;
+    } on Exception {
+      return false;
+    }
+  }
+
+  Future<bool> installApp(
+    String packageName,
+    String originalFilePath,
+    String patchedFilePath,
+  ) async {
+    try {
+      Directory managerDir = Directory(managerDirPath);
+      managerDir.createSync();
+      String newPatchedFilePath = '$managerDirPath/$packageName.apk';
+      installServiceDScript(
+        packageName,
+        originalFilePath,
+        newPatchedFilePath,
+      );
+      installPostFsDataScript(
+        packageName,
+        originalFilePath,
+        newPatchedFilePath,
+      );
+      File(patchedFilePath).renameSync(newPatchedFilePath);
+      await Root.exec(
+        cmd: 'chmod 644 $newPatchedFilePath',
+      );
+      await Root.exec(
+        cmd: 'chown system:system $newPatchedFilePath',
+      );
+      await Root.exec(
+        cmd: 'chcon u:object_r:apk_data_file:s0 $newPatchedFilePath',
+      );
+      return true;
+    } on Exception {
+      return false;
+    }
+  }
+
+  Future<void> installServiceDScript(
+    String packageName,
+    String originalFilePath,
+    String patchedFilePath,
+  ) async {
+    String content = '#!/system/bin/sh\n'
+        'while [ "\$(getprop sys.boot_completed | tr -d \'\r\')" != "1" ]; do sleep 1; done\n'
+        'sleep 1\n'
+        'chcon u:object_r:apk_data_file:s0 $patchedFilePath\n'
+        'mount -o bind $patchedFilePath $originalFilePath';
+    File scriptFile = File('$serviceDDirPath/$packageName.sh');
+    await scriptFile.writeAsString(content);
+    await Root.exec(cmd: 'chmod 744 ${scriptFile.path}');
+  }
+
+  Future<void> installPostFsDataScript(
+    String packageName,
+    String originalFilePath,
+    String patchedFilePath,
+  ) async {
+    String content = '#!/system/bin/sh\n'
+        'while read line; do echo \$line | grep $originalFilePath | '
+        'awk \'{print \$2}\' | xargs umount -l; done< /proc/mounts';
+    File scriptFile = File('$postFsDataDirPath/$packageName.sh');
+    await scriptFile.writeAsString(content);
+    await Root.exec(cmd: 'chmod 744 ${scriptFile.path}');
+  }
+}