| /* |
| * 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.os; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import android.app.Activity; |
| import android.app.ActivityManager; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.util.ArraySet; |
| import android.util.Log; |
| import android.util.Pair; |
| |
| import androidx.test.InstrumentationRegistry; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import com.android.frameworks.coretests.bdr_helper_app.TestCommsReceiver; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.util.Set; |
| import java.util.concurrent.BrokenBarrierException; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.CyclicBarrier; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| /** |
| * Tests functionality of {@link android.os.IBinder.DeathRecipient} callbacks. |
| */ |
| @RunWith(AndroidJUnit4.class) |
| public class BinderDeathRecipientTest { |
| private static final String TAG = BinderDeathRecipientTest.class.getSimpleName(); |
| private static final String TEST_PACKAGE_NAME_1 = |
| "com.android.frameworks.coretests.bdr_helper_app1"; |
| private static final String TEST_PACKAGE_NAME_2 = |
| "com.android.frameworks.coretests.bdr_helper_app2"; |
| |
| private Context mContext; |
| private Handler mHandler; |
| private ActivityManager mActivityManager; |
| private Set<Pair<IBinder, IBinder.DeathRecipient>> mLinkedDeathRecipients = new ArraySet<>(); |
| |
| @Before |
| public void setUp() { |
| mContext = InstrumentationRegistry.getTargetContext(); |
| mActivityManager = mContext.getSystemService(ActivityManager.class); |
| mHandler = new Handler(Looper.getMainLooper()); |
| } |
| |
| private IBinder getNewRemoteBinder(String testPackage) throws InterruptedException { |
| final CountDownLatch resultLatch = new CountDownLatch(1); |
| final AtomicInteger resultCode = new AtomicInteger(Activity.RESULT_CANCELED); |
| final AtomicReference<Bundle> resultExtras = new AtomicReference<>(); |
| |
| final Intent intent = new Intent(TestCommsReceiver.ACTION_GET_BINDER) |
| .setClassName(testPackage, TestCommsReceiver.class.getName()); |
| mContext.sendOrderedBroadcast(intent, null, new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| resultCode.set(getResultCode()); |
| resultExtras.set(getResultExtras(true)); |
| resultLatch.countDown(); |
| } |
| }, mHandler, Activity.RESULT_CANCELED, null, null); |
| |
| assertTrue("Request for binder timed out", resultLatch.await(5, TimeUnit.SECONDS)); |
| assertEquals(Activity.RESULT_OK, resultCode.get()); |
| return resultExtras.get().getBinder(TestCommsReceiver.EXTRA_KEY_BINDER); |
| } |
| |
| @Test |
| public void binderDied_noArgs() throws Exception { |
| final IBinder testAppBinder = getNewRemoteBinder(TEST_PACKAGE_NAME_1); |
| final CountDownLatch deathNotificationLatch = new CountDownLatch(1); |
| final IBinder.DeathRecipient simpleDeathRecipient = |
| () -> deathNotificationLatch.countDown(); |
| testAppBinder.linkToDeath(simpleDeathRecipient, 0); |
| mLinkedDeathRecipients.add(Pair.create(testAppBinder, simpleDeathRecipient)); |
| |
| mActivityManager.forceStopPackage(TEST_PACKAGE_NAME_1); |
| assertTrue("Death notification did not arrive", |
| deathNotificationLatch.await(10, TimeUnit.SECONDS)); |
| } |
| |
| @Test |
| public void binderDied_iBinderArg() throws Exception { |
| final IBinder testApp1Binder = getNewRemoteBinder(TEST_PACKAGE_NAME_1); |
| final IBinder testApp2Binder = getNewRemoteBinder(TEST_PACKAGE_NAME_2); |
| final CyclicBarrier barrier = new CyclicBarrier(2); |
| |
| final AtomicReference<IBinder> binderThatDied = new AtomicReference<>(); |
| final IBinder.DeathRecipient sameDeathRecipient = new IBinder.DeathRecipient() { |
| @Override |
| public void binderDied() { |
| Log.e(TAG, "Should not have been called!"); |
| } |
| |
| @Override |
| public void binderDied(IBinder who) { |
| binderThatDied.set(who); |
| try { |
| barrier.await(); |
| } catch (InterruptedException | BrokenBarrierException e) { |
| Log.e(TAG, "Unexpected exception while waiting on CyclicBarrier", e); |
| } |
| } |
| }; |
| testApp1Binder.linkToDeath(sameDeathRecipient, 0); |
| mLinkedDeathRecipients.add(Pair.create(testApp1Binder, sameDeathRecipient)); |
| |
| testApp2Binder.linkToDeath(sameDeathRecipient, 0); |
| mLinkedDeathRecipients.add(Pair.create(testApp2Binder, sameDeathRecipient)); |
| |
| mActivityManager.forceStopPackage(TEST_PACKAGE_NAME_1); |
| try { |
| barrier.await(10, TimeUnit.SECONDS); |
| } catch (TimeoutException e) { |
| fail("Timed out while waiting for 1st death notification: " + e.getMessage()); |
| } |
| assertEquals("Different binder received", testApp1Binder, binderThatDied.get()); |
| |
| barrier.reset(); |
| mActivityManager.forceStopPackage(TEST_PACKAGE_NAME_2); |
| try { |
| barrier.await(10, TimeUnit.SECONDS); |
| } catch (TimeoutException e) { |
| fail("Timed out while waiting for 2nd death notification: " + e.getMessage()); |
| } |
| assertEquals("Different binder received", testApp2Binder, binderThatDied.get()); |
| } |
| |
| @After |
| public void tearDown() { |
| for (Pair<IBinder, IBinder.DeathRecipient> linkedPair : mLinkedDeathRecipients) { |
| linkedPair.first.unlinkToDeath(linkedPair.second, 0); |
| } |
| } |
| } |