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/*
* Copyright (C) 2020 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;
import static org.junit.Assert.assertThat;
import static org.hamcrest.Matchers.lessThan;
import android.test.AndroidTestCase;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.platform.test.annotations.SecurityTest;
import android.os.SystemClock;
import androidx.test.InstrumentationRegistry;
import androidx.test.runner.AndroidJUnit4;
import android.util.Log;
import org.junit.Test;
import org.junit.runner.RunWith;
@SecurityTest
@RunWith(AndroidJUnit4.class)
public class CVE_2021_0339 {
static final String TAG = CVE_2021_0339.class.getSimpleName();
private static final String SECURITY_CTS_PACKAGE_NAME = "android.security.cts";
static final int MAX_TRANSITION_DURATION_MS = 3000; // internal max
static final int TIME_MEASUREMENT_DELAY_MS = 5000; // tolerance for lag.
public static boolean testCompleted;
public FirstActivity fActivity;
public SecondActivity sActivity;
private void launchActivity(Class<? extends Activity> clazz) {
final Context context = InstrumentationRegistry.getInstrumentation().getContext();
final Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setClassName(SECURITY_CTS_PACKAGE_NAME, clazz.getName());
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
/**
* b/175817167
*/
@Test
@SecurityTest
public void testPocCVE_2021_0339() throws Exception {
Log.d(TAG, "test start");
testCompleted = false;
launchActivity(FirstActivity.class);
//wait for SecondActivity animation to complete
synchronized(CVE_2021_0339.class){
if(!testCompleted)
CVE_2021_0339.class.wait();
}
Log.d(TAG, "test completed");
//A duration of a transition from "FirstActivity" to "Second Activity"
//is set in this test to 10 seconds
// (res/anim/translate1.xml and res/anim/translate2.xml)
//The fix is supposed to limit the duration to 3000 ms.
// testing for > 8s
assertThat(SecondActivity.duration,
lessThan(MAX_TRANSITION_DURATION_MS + TIME_MEASUREMENT_DELAY_MS));
}
public static class FirstActivity extends Activity {
@Override
public void onEnterAnimationComplete() {
super.onEnterAnimationComplete();
Intent intent = new Intent(this, SecondActivity.class);
intent.putExtra("STARTED_TIMESTAMP", SystemClock.uptimeMillis());
startActivity(intent);
overridePendingTransition(R.anim.translate2,R.anim.translate1);
Log.d(TAG,this.getLocalClassName()+" onEnterAnimationComplete()");
}
}
public static class SecondActivity extends Activity{
public static int duration = 0;
@Override
public void onEnterAnimationComplete() {
super.onEnterAnimationComplete();
long completedTs = SystemClock.uptimeMillis();
long startedTs = getIntent().getLongExtra("STARTED_TIMESTAMP", 0);
duration = (int)(completedTs - startedTs);
Log.d(TAG, this.getLocalClassName()
+ " onEnterAnimationComplete() duration=" + Long.toString(duration));
//Notify main thread that the test is completed
synchronized(CVE_2021_0339.class){
CVE_2021_0339.testCompleted = true;
CVE_2021_0339.class.notifyAll();
}
}
}
}
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