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/*
* Copyright (C) 2022 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.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.graphics.PixelFormat;
import android.os.IBinder;
import android.view.Gravity;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.Button;
public class PocService extends Service {
Button mButton;
WindowManager mWindowManager;
private int getScreenWidth() {
return Resources.getSystem().getDisplayMetrics().widthPixels;
}
private int getScreenHeight() {
return Resources.getSystem().getDisplayMetrics().heightPixels;
}
String getStringRes(int key) {
return getResources().getString(key);
}
int getIntegerRes(int key) {
return getResources().getInteger(key);
}
@Override
public void onCreate() {
try {
super.onCreate();
mWindowManager = getSystemService(WindowManager.class);
LayoutParams layoutParams = new LayoutParams();
layoutParams.type = LayoutParams.TYPE_APPLICATION_OVERLAY;
layoutParams.flags =
LayoutParams.FLAG_NOT_TOUCH_MODAL | LayoutParams.FLAG_NOT_FOCUSABLE;
layoutParams.format = PixelFormat.OPAQUE;
layoutParams.gravity = Gravity.LEFT | Gravity.TOP;
layoutParams.width = getScreenWidth();
layoutParams.height = getScreenHeight();
layoutParams.x = getScreenWidth() / 2;
layoutParams.y = getScreenHeight() / 2;
/* Show the floating window */
mButton = new Button(this);
mButton.setText(getString(R.string.overlayButtonText));
mWindowManager.addView(mButton, layoutParams);
} catch (Exception e) {
sendTestResult(getIntegerRes(R.integer.assumptionFailure), e.getMessage());
return;
}
sendTestResult(getIntegerRes(R.integer.noAssumptionFailure), getStringRes(R.string.empty));
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onDestroy() {
try {
if (mWindowManager != null && mButton != null) {
mWindowManager.removeView(mButton);
}
super.onDestroy();
} catch (Exception e) {
sendTestResult(getIntegerRes(R.integer.assumptionFailure), e.getMessage());
}
}
private void sendTestResult(int result, String message) {
try {
SharedPreferences sh = getSharedPreferences(getStringRes(R.string.sharedPreferences),
Context.MODE_PRIVATE);
SharedPreferences.Editor edit = sh.edit();
edit.putInt(getStringRes(R.string.resultKey), result);
edit.putString(getStringRes(R.string.messageKey), message);
edit.commit();
} catch (Exception e) {
// ignore the exception
}
}
}
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