1 /*
2  * Copyright (C) 2021 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.server.devicepolicy;
18 
19 import static com.android.server.devicepolicy.DevicePolicyManagerService.LOG_TAG;
20 
21 import android.content.pm.IPackageDeleteObserver;
22 import android.content.pm.PackageManager;
23 import android.util.Log;
24 import android.util.Slog;
25 
26 import java.util.concurrent.CountDownLatch;
27 import java.util.concurrent.TimeUnit;
28 
29 /**
30  * Awaits the deletion of all the non-required apps.
31  */
32 final class NonRequiredPackageDeleteObserver extends IPackageDeleteObserver.Stub {
33     private static final int PACKAGE_DELETE_TIMEOUT_SEC = 30;
34 
35     private final CountDownLatch mLatch;
36     private boolean mFailed = false;
37 
NonRequiredPackageDeleteObserver(int packageCount)38     NonRequiredPackageDeleteObserver(int packageCount) {
39         this.mLatch = new CountDownLatch(packageCount);
40     }
41 
42     @Override
packageDeleted(String packageName, int returnCode)43     public void packageDeleted(String packageName, int returnCode) {
44         if (returnCode != PackageManager.DELETE_SUCCEEDED) {
45             Slog.e(LOG_TAG, "Failed to delete package: " + packageName);
46             mFailed = true;
47         }
48         mLatch.countDown();
49     }
50 
awaitPackagesDeletion()51     public boolean awaitPackagesDeletion() {
52         try {
53             if (mLatch.await(PACKAGE_DELETE_TIMEOUT_SEC, TimeUnit.SECONDS)) {
54                 if (!mFailed) {
55                     Slog.i(LOG_TAG, "All non-required system apps with launcher icon, "
56                             + "and all disallowed apps have been uninstalled.");
57                 }
58                 return !mFailed;
59             } else {
60                 Slog.i(LOG_TAG, "Waiting time elapsed before all package deletion finished");
61                 return false;
62             }
63         } catch (InterruptedException e) {
64             Log.w(LOG_TAG, "Interrupted while waiting for package deletion", e);
65             Thread.currentThread().interrupt();
66             return false;
67         }
68     }
69 }
70