1 /*
2  * Copyright (C) 2018 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.settings.applications.specialaccess.zenaccess;
18 
19 import android.app.ActivityManager;
20 import android.app.AppGlobals;
21 import android.app.NotificationManager;
22 import android.app.settings.SettingsEnums;
23 import android.content.Context;
24 import android.content.pm.PackageInfo;
25 import android.content.pm.ParceledListSlice;
26 import android.os.AsyncTask;
27 import android.os.RemoteException;
28 import android.util.ArraySet;
29 import android.util.Log;
30 
31 import androidx.annotation.VisibleForTesting;
32 
33 import com.android.settings.core.BasePreferenceController;
34 import com.android.settings.overlay.FeatureFactory;
35 
36 import java.util.List;
37 import java.util.Set;
38 
39 public class ZenAccessController extends BasePreferenceController {
40 
41     private static final String TAG = "ZenAccessController";
42 
43     private final ActivityManager mActivityManager;
44 
ZenAccessController(Context context, String preferenceKey)45     public ZenAccessController(Context context, String preferenceKey) {
46         super(context, preferenceKey);
47         mActivityManager = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);
48     }
49 
50     @Override
getAvailabilityStatus()51     public int getAvailabilityStatus() {
52         return isSupported(mActivityManager)
53                 ? AVAILABLE_UNSEARCHABLE
54                 : UNSUPPORTED_ON_DEVICE;
55     }
56 
isSupported(ActivityManager activityManager)57     public static boolean isSupported(ActivityManager activityManager) {
58         return !activityManager.isLowRamDevice();
59     }
60 
getPackagesRequestingNotificationPolicyAccess()61     public static Set<String> getPackagesRequestingNotificationPolicyAccess() {
62         final ArraySet<String> requestingPackages = new ArraySet<>();
63         try {
64             final String[] PERM = {
65                     android.Manifest.permission.ACCESS_NOTIFICATION_POLICY
66             };
67             final ParceledListSlice list = AppGlobals.getPackageManager()
68                     .getPackagesHoldingPermissions(PERM, 0 /*flags*/,
69                             ActivityManager.getCurrentUser());
70             final List<PackageInfo> pkgs = list.getList();
71             if (pkgs != null) {
72                 for (PackageInfo info : pkgs) {
73                     requestingPackages.add(info.packageName);
74                 }
75             }
76         } catch (RemoteException e) {
77             Log.e(TAG, "Cannot reach packagemanager", e);
78         }
79         return requestingPackages;
80     }
81 
getAutoApprovedPackages(Context context)82     public static Set<String> getAutoApprovedPackages(Context context) {
83         final Set<String> autoApproved = new ArraySet<>();
84         autoApproved.addAll(context.getSystemService(NotificationManager.class)
85                 .getEnabledNotificationListenerPackages());
86         return autoApproved;
87     }
88 
hasAccess(Context context, String pkg)89     public static boolean hasAccess(Context context, String pkg) {
90         return context.getSystemService(
91                 NotificationManager.class).isNotificationPolicyAccessGrantedForPackage(pkg);
92     }
93 
setAccess(final Context context, final String pkg, final boolean access)94     public static void setAccess(final Context context, final String pkg, final boolean access) {
95         logSpecialPermissionChange(access, pkg, context);
96         AsyncTask.execute(() -> {
97             final NotificationManager mgr = context.getSystemService(NotificationManager.class);
98             mgr.setNotificationPolicyAccessGranted(pkg, access);
99         });
100     }
101 
deleteRules(final Context context, final String pkg)102     public static void deleteRules(final Context context, final String pkg) {
103         AsyncTask.execute(() -> {
104             final NotificationManager mgr = context.getSystemService(NotificationManager.class);
105             mgr.removeAutomaticZenRules(pkg);
106         });
107     }
108 
109     @VisibleForTesting
logSpecialPermissionChange(boolean enable, String packageName, Context context)110     static void logSpecialPermissionChange(boolean enable, String packageName, Context context) {
111         int logCategory = enable ? SettingsEnums.APP_SPECIAL_PERMISSION_DND_ALLOW
112                 : SettingsEnums.APP_SPECIAL_PERMISSION_DND_DENY;
113         FeatureFactory.getFactory(context).getMetricsFeatureProvider().action(context,
114                 logCategory, packageName);
115     }
116 }
117