| /* |
| * 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 com.android.systemui.car.toast; |
| |
| import android.app.ActivityManager; |
| import android.app.ITransientNotificationCallback; |
| import android.content.Context; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageManager; |
| import android.content.res.Resources; |
| import android.os.IBinder; |
| import android.util.Log; |
| |
| import androidx.annotation.Nullable; |
| |
| import com.android.systemui.R; |
| import com.android.systemui.dagger.SysUISingleton; |
| import com.android.systemui.dagger.qualifiers.Main; |
| import com.android.systemui.statusbar.CommandQueue; |
| import com.android.systemui.toast.ToastFactory; |
| import com.android.systemui.toast.ToastLogger; |
| import com.android.systemui.toast.ToastUI; |
| |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import javax.inject.Inject; |
| |
| /** |
| * Controls display of text toasts in AAOS. |
| */ |
| @SysUISingleton |
| public class CarToastUI extends ToastUI { |
| private static final boolean DEBUG = false; |
| private static final String TAG = "CarToastUI"; |
| |
| private final PackageManager mPackageManager; |
| private final Set<String> mPackageNameAllowList; |
| |
| @Inject |
| public CarToastUI(Context context, @Main Resources resources, CommandQueue commandQueue, |
| ToastFactory toastFactory, ToastLogger toastLogger, PackageManager packageManager) { |
| super(context, commandQueue, toastFactory, toastLogger); |
| mPackageManager = packageManager; |
| |
| String[] allowList = resources.getStringArray( |
| R.array.config_restrictedToastsPackageNameAllowList); |
| mPackageNameAllowList = new HashSet<>(Arrays.asList(allowList)); |
| } |
| |
| @Override |
| public void showToast(int uid, String packageName, IBinder token, CharSequence text, |
| IBinder windowToken, int duration, @Nullable ITransientNotificationCallback callback) { |
| if (!isAllowListed(packageName) && !isSystemPrivilegedOrPlatformKey(packageName)) { |
| if (DEBUG) { |
| Log.w(TAG, packageName |
| + " cannot show a Toast since it is not allow listed and it isn't " |
| + "privileged."); |
| } |
| return; |
| } |
| if (DEBUG) { |
| Log.d(TAG, |
| packageName |
| + " is a system privileged app or has been signed with platform key."); |
| } |
| |
| super.showToast(uid, packageName, token, text, windowToken, duration, callback); |
| } |
| |
| private boolean isAllowListed(String packageName) { |
| return mPackageNameAllowList.contains(packageName); |
| } |
| |
| private boolean isSystemPrivilegedOrPlatformKey(String packageName) { |
| ApplicationInfo applicationInfo = getApplicationInfo(packageName); |
| if (applicationInfo == null) return false; |
| |
| return (applicationInfo.isSignedWithPlatformKey() || ( |
| applicationInfo.isSystemApp() |
| && applicationInfo.isPrivilegedApp())); |
| } |
| |
| private ApplicationInfo getApplicationInfo(String packageName) { |
| ApplicationInfo applicationInfo = null; |
| try { |
| applicationInfo = mPackageManager.getApplicationInfoAsUser(packageName, /* flags= */ 0, |
| ActivityManager.getCurrentUser()); |
| } catch (PackageManager.NameNotFoundException ex) { |
| Log.e(TAG, "package not found: " + packageName); |
| } |
| return applicationInfo; |
| } |
| } |