| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.security.cts.cve_2021_0954; |
| |
| import android.app.Service; |
| import android.content.Intent; |
| import android.content.res.Resources; |
| import android.graphics.PixelFormat; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.provider.Settings; |
| import android.view.Gravity; |
| import android.view.WindowManager; |
| import android.view.WindowManager.LayoutParams; |
| import android.widget.Button; |
| |
| public class PocService extends Service { |
| public static Button mButton; |
| private WindowManager mWindowManager; |
| private WindowManager.LayoutParams mLayoutParams; |
| |
| private static int getScreenWidth() { |
| return Resources.getSystem().getDisplayMetrics().widthPixels; |
| } |
| |
| private static int getScreenHeight() { |
| return Resources.getSystem().getDisplayMetrics().heightPixels; |
| } |
| |
| @Override |
| public void onCreate() { |
| super.onCreate(); |
| mWindowManager = getSystemService(WindowManager.class); |
| mLayoutParams = new WindowManager.LayoutParams(); |
| mLayoutParams.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY; |
| mLayoutParams.flags = WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
| | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE; |
| mLayoutParams.format = PixelFormat.OPAQUE; |
| mLayoutParams.gravity = Gravity.LEFT | Gravity.TOP; |
| mLayoutParams.width = getScreenWidth(); |
| mLayoutParams.height = getScreenHeight(); |
| mLayoutParams.x = getScreenWidth() / 2; |
| mLayoutParams.y = getScreenHeight() / 2; |
| } |
| |
| @Override |
| public IBinder onBind(Intent intent) { |
| return null; |
| } |
| |
| @Override |
| public int onStartCommand(Intent intent, int flags, int startId) { |
| showFloatingWindow(); |
| return super.onStartCommand(intent, flags, startId); |
| } |
| |
| @Override |
| public void onDestroy() { |
| if (mWindowManager != null && mButton != null) { |
| mWindowManager.removeView(mButton); |
| } |
| super.onDestroy(); |
| } |
| |
| private void showFloatingWindow() { |
| if (Settings.canDrawOverlays(this)) { |
| mButton = new Button(getApplicationContext()); |
| mButton.setText("OverlayButton"); |
| mWindowManager.addView(mButton, mLayoutParams); |
| new Handler().postDelayed(new Runnable() { |
| @Override |
| public void run() { |
| onDestroy(); |
| } |
| }, 60000); // one minute |
| mButton.setTag(mButton.getVisibility()); |
| } |
| } |
| } |