| /* |
| * 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.server.statusbar; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.net.Uri; |
| import android.os.UserHandle; |
| import android.util.ArraySet; |
| import android.util.IndentingPrintWriter; |
| import android.util.SparseArrayMap; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| import java.io.FileDescriptor; |
| |
| /** |
| * Tracks user denials of requests from {@link StatusBarManagerService#requestAddTile}. |
| * |
| * After a certain number of denials for a particular pair (user,ComponentName), requests will be |
| * auto-denied without showing a dialog to the user. |
| */ |
| public class TileRequestTracker { |
| |
| @VisibleForTesting |
| static final int MAX_NUM_DENIALS = 3; |
| |
| private final Context mContext; |
| private final Object mLock = new Object(); |
| |
| @GuardedBy("mLock") |
| private final SparseArrayMap<ComponentName, Integer> mTrackingMap = new SparseArrayMap<>(); |
| @GuardedBy("mLock") |
| private final ArraySet<ComponentName> mComponentsToRemove = new ArraySet<>(); |
| |
| private final BroadcastReceiver mUninstallReceiver = new BroadcastReceiver() { |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) { |
| return; |
| } |
| |
| Uri data = intent.getData(); |
| String packageName = data.getEncodedSchemeSpecificPart(); |
| |
| if (!intent.hasExtra(Intent.EXTRA_UID)) { |
| return; |
| } |
| int userId = UserHandle.getUserId(intent.getIntExtra(Intent.EXTRA_UID, -1)); |
| synchronized (mLock) { |
| mComponentsToRemove.clear(); |
| final int elementsForUser = mTrackingMap.numElementsForKey(userId); |
| final int userKeyIndex = mTrackingMap.indexOfKey(userId); |
| for (int compKeyIndex = 0; compKeyIndex < elementsForUser; compKeyIndex++) { |
| ComponentName c = mTrackingMap.keyAt(userKeyIndex, compKeyIndex); |
| if (c.getPackageName().equals(packageName)) { |
| mComponentsToRemove.add(c); |
| } |
| } |
| final int compsToRemoveNum = mComponentsToRemove.size(); |
| for (int i = 0; i < compsToRemoveNum; i++) { |
| ComponentName c = mComponentsToRemove.valueAt(i); |
| mTrackingMap.delete(userId, c); |
| } |
| } |
| } |
| }; |
| |
| TileRequestTracker(Context context) { |
| mContext = context; |
| |
| IntentFilter intentFilter = new IntentFilter(); |
| intentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED); |
| intentFilter.addAction(Intent.ACTION_PACKAGE_DATA_CLEARED); |
| intentFilter.addDataScheme("package"); |
| mContext.registerReceiverAsUser(mUninstallReceiver, UserHandle.ALL, intentFilter, null, |
| null); |
| } |
| |
| /** |
| * Return whether this combination of {@code userId} and {@link ComponentName} should be |
| * auto-denied. |
| */ |
| boolean shouldBeDenied(int userId, ComponentName componentName) { |
| synchronized (mLock) { |
| return mTrackingMap.getOrDefault(userId, componentName, 0) >= MAX_NUM_DENIALS; |
| } |
| } |
| |
| /** |
| * Add a new denial instance for a given {@code userId} and {@link ComponentName}. |
| */ |
| void addDenial(int userId, ComponentName componentName) { |
| synchronized (mLock) { |
| int current = mTrackingMap.getOrDefault(userId, componentName, 0); |
| mTrackingMap.add(userId, componentName, current + 1); |
| } |
| } |
| |
| /** |
| * Reset the number of denied request for a given {@code userId} and {@link ComponentName}. |
| */ |
| void resetRequests(int userId, ComponentName componentName) { |
| synchronized (mLock) { |
| mTrackingMap.delete(userId, componentName); |
| } |
| } |
| |
| void dump(FileDescriptor fd, IndentingPrintWriter pw, String[] args) { |
| pw.println("TileRequestTracker:"); |
| pw.increaseIndent(); |
| synchronized (mLock) { |
| mTrackingMap.forEach((user, componentName, value) -> { |
| pw.println("user=" + user + ", " + componentName.toShortString() + ": " + value); |
| }); |
| } |
| pw.decreaseIndent(); |
| } |
| } |