| /* |
| * 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.server.location.injector; |
| |
| import static android.content.pm.PackageManager.PERMISSION_GRANTED; |
| |
| import android.content.Context; |
| import android.location.util.identity.CallerIdentity; |
| import android.os.Binder; |
| |
| import com.android.server.FgThread; |
| |
| /** |
| * Provides accessors and listeners for location permissions, including appops. |
| */ |
| public class SystemLocationPermissionsHelper extends LocationPermissionsHelper { |
| |
| private final Context mContext; |
| |
| private boolean mInited; |
| |
| public SystemLocationPermissionsHelper(Context context, AppOpsHelper appOps) { |
| super(appOps); |
| mContext = context; |
| } |
| |
| /** Called when system is ready. */ |
| public void onSystemReady() { |
| if (mInited) { |
| return; |
| } |
| |
| mContext.getPackageManager().addOnPermissionsChangeListener( |
| uid -> { |
| // invoked on ui thread, move to fg thread so ui thread isn't blocked |
| FgThread.getHandler().post(() -> notifyLocationPermissionsChanged(uid)); |
| }); |
| mInited = true; |
| } |
| |
| @Override |
| protected boolean hasPermission(String permission, CallerIdentity callerIdentity) { |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| return mContext.checkPermission(permission, callerIdentity.getPid(), |
| callerIdentity.getUid()) == PERMISSION_GRANTED; |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| } |