| /* |
| * Copyright (C) 2016 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.launcher3.util; |
| |
| import android.app.AppOpsManager; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.content.pm.ResolveInfo; |
| import android.os.Build; |
| import android.text.TextUtils; |
| |
| import com.android.launcher3.Utilities; |
| |
| /** |
| * Utility methods using package manager |
| */ |
| public class PackageManagerHelper { |
| |
| private static final int FLAG_SUSPENDED = 1<<30; |
| |
| /** |
| * Returns true if the app can possibly be on the SDCard. This is just a workaround and doesn't |
| * guarantee that the app is on SD card. |
| */ |
| public static boolean isAppOnSdcard(PackageManager pm, String packageName) { |
| return isAppEnabled(pm, packageName, PackageManager.GET_UNINSTALLED_PACKAGES); |
| } |
| |
| public static boolean isAppEnabled(PackageManager pm, String packageName) { |
| return isAppEnabled(pm, packageName, 0); |
| } |
| |
| public static boolean isAppEnabled(PackageManager pm, String packageName, int flags) { |
| try { |
| ApplicationInfo info = pm.getApplicationInfo(packageName, flags); |
| return info != null && info.enabled; |
| } catch (PackageManager.NameNotFoundException e) { |
| return false; |
| } |
| } |
| |
| public static boolean isAppSuspended(PackageManager pm, String packageName) { |
| try { |
| ApplicationInfo info = pm.getApplicationInfo(packageName, 0); |
| return info != null && isAppSuspended(info); |
| } catch (PackageManager.NameNotFoundException e) { |
| return false; |
| } |
| } |
| |
| public static boolean isAppSuspended(ApplicationInfo info) { |
| // The value of FLAG_SUSPENDED was reused by a hidden constant |
| // ApplicationInfo.FLAG_PRIVILEGED prior to N, so only check for suspended flag on N |
| // or later. |
| if (Utilities.isNycOrAbove()) { |
| return (info.flags & FLAG_SUSPENDED) != 0; |
| } else { |
| return false; |
| } |
| } |
| |
| /** |
| * Returns true if {@param srcPackage} has the permission required to start the activity from |
| * {@param intent}. If {@param srcPackage} is null, then the activity should not need |
| * any permissions |
| */ |
| public static boolean hasPermissionForActivity(Context context, Intent intent, |
| String srcPackage) { |
| PackageManager pm = context.getPackageManager(); |
| ResolveInfo target = pm.resolveActivity(intent, 0); |
| if (target == null) { |
| // Not a valid target |
| return false; |
| } |
| if (TextUtils.isEmpty(target.activityInfo.permission)) { |
| // No permission is needed |
| return true; |
| } |
| if (TextUtils.isEmpty(srcPackage)) { |
| // The activity requires some permission but there is no source. |
| return false; |
| } |
| |
| // Source does not have sufficient permissions. |
| if(pm.checkPermission(target.activityInfo.permission, srcPackage) != |
| PackageManager.PERMISSION_GRANTED) { |
| return false; |
| } |
| |
| if (!Utilities.ATLEAST_MARSHMALLOW) { |
| // These checks are sufficient for below M devices. |
| return true; |
| } |
| |
| // On M and above also check AppOpsManager for compatibility mode permissions. |
| if (TextUtils.isEmpty(AppOpsManager.permissionToOp(target.activityInfo.permission))) { |
| // There is no app-op for this permission, which could have been disabled. |
| return true; |
| } |
| |
| // There is no direct way to check if the app-op is allowed for a particular app. Since |
| // app-op is only enabled for apps running in compatibility mode, simply block such apps. |
| |
| try { |
| return pm.getApplicationInfo(srcPackage, 0).targetSdkVersion >= Build.VERSION_CODES.M; |
| } catch (NameNotFoundException e) { } |
| |
| return false; |
| } |
| } |