| /* |
| * Copyright (C) 2021 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 com.android.car.settings.applications; |
| |
| import static android.app.usage.UsageStatsManager.INTERVAL_MONTHLY; |
| |
| import android.app.usage.UsageStats; |
| import android.app.usage.UsageStatsManager; |
| import android.apphibernation.AppHibernationManager; |
| import android.content.Context; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.provider.DeviceConfig; |
| import android.util.ArrayMap; |
| |
| import androidx.annotation.NonNull; |
| |
| import com.android.settingslib.utils.ThreadUtils; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Class for fetching and returning the number of hibernated apps. Largely derived from |
| * {@link com.android.settings.applications.HibernatedAppsPreferenceController}. |
| */ |
| public class HibernatedAppsItemManager { |
| private static final String PROPERTY_HIBERNATION_UNUSED_THRESHOLD_MILLIS = |
| "auto_revoke_unused_threshold_millis2"; |
| private static final long DEFAULT_UNUSED_THRESHOLD_MS = TimeUnit.DAYS.toMillis(90); |
| |
| private final Context mContext; |
| |
| private HibernatedAppsCountListener mListener; |
| |
| public HibernatedAppsItemManager(Context context) { |
| mContext = context; |
| } |
| |
| /** |
| * Starts fetching recently used apps |
| */ |
| public void startLoading() { |
| ThreadUtils.postOnBackgroundThread(() -> { |
| int count = getNumHibernated(); |
| ThreadUtils.postOnMainThread(() -> { |
| HibernatedAppsCountListener localListener = mListener; |
| if (localListener != null) { |
| localListener.onHibernatedAppsCountLoaded(count); |
| } |
| }); |
| }); |
| } |
| |
| /** |
| * Registers a listener that will be notified once the data is loaded. |
| */ |
| public void setListener(@NonNull HibernatedAppsCountListener listener) { |
| mListener = listener; |
| } |
| |
| private int getNumHibernated() { |
| // TODO(b/187465752): Find a way to export this logic from PermissionController module |
| PackageManager pm = mContext.getPackageManager(); |
| AppHibernationManager ahm = |
| mContext.getSystemService(AppHibernationManager.class); |
| List<String> hibernatedPackages = ahm.getHibernatingPackagesForUser(); |
| int numHibernated = hibernatedPackages.size(); |
| |
| // Also need to count packages that are auto revoked but not hibernated. |
| int numAutoRevoked = 0; |
| UsageStatsManager usm = mContext.getSystemService(UsageStatsManager.class); |
| long now = System.currentTimeMillis(); |
| long unusedThreshold = DeviceConfig.getLong(DeviceConfig.NAMESPACE_PERMISSIONS, |
| PROPERTY_HIBERNATION_UNUSED_THRESHOLD_MILLIS, DEFAULT_UNUSED_THRESHOLD_MS); |
| List<UsageStats> usageStatsList = usm.queryUsageStats(INTERVAL_MONTHLY, |
| now - unusedThreshold, now); |
| Map<String, UsageStats> recentlyUsedPackages = new ArrayMap<>(); |
| for (UsageStats us : usageStatsList) { |
| recentlyUsedPackages.put(us.mPackageName, us); |
| } |
| List<PackageInfo> packages = pm.getInstalledPackages( |
| PackageManager.MATCH_DISABLED_COMPONENTS | PackageManager.GET_PERMISSIONS); |
| for (PackageInfo pi : packages) { |
| String packageName = pi.packageName; |
| UsageStats usageStats = recentlyUsedPackages.get(packageName); |
| // Only count packages that have not been used recently as auto-revoked permissions may |
| // stay revoked even after use if the user has not regranted them. |
| boolean usedRecently = (usageStats != null |
| && (now - usageStats.getLastTimeAnyComponentUsed() < unusedThreshold |
| || now - usageStats.getLastTimeVisible() < unusedThreshold)); |
| if (!hibernatedPackages.contains(packageName) |
| && pi.requestedPermissions != null |
| && !usedRecently) { |
| for (String perm : pi.requestedPermissions) { |
| if ((pm.getPermissionFlags(perm, packageName, mContext.getUser()) |
| & PackageManager.FLAG_PERMISSION_AUTO_REVOKED) != 0) { |
| numAutoRevoked++; |
| break; |
| } |
| } |
| } |
| } |
| return numHibernated + numAutoRevoked; |
| } |
| |
| |
| /** |
| * Callback that is called once the count of hibernated apps has been fetched. |
| */ |
| public interface HibernatedAppsCountListener { |
| /** |
| * Called when the count of hibernated apps has loaded. |
| */ |
| void onHibernatedAppsCountLoaded(int hibernatedAppsCount); |
| } |
| } |