content: /*
   * Copyright (C) 2019 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;
  
  import android.content.Context;
  import android.content.pm.PackageManager;
  
  /**
   * Encapsulates utility functions and classes related to location permission checking.
   */
  public final class LocationPermissionUtil {
      /**
       * Returns true if the calling process identified by {@code callerIdentity} is enabled to
       * report location to AppOps service before providing device location identifiable information
       * to its clients. Packages with these permissions must report any reporting of location
       * information to apps, via AppOps.
       *
       * <p>The calling package represented by {@code callerIdentity} is considered a part of the
       * extended Location Manager Service if it has all of the permissions below.
       * <ul>
       *     <li>{@link android.Manifest.permission#LOCATION_HARDWARE}
       *     <li>{@link android.Manifest.permission#UPDATE_APP_OPS_STATS}
       * </ul>
       *
       * <p>Any package with these permissions, that passes along location information from Android
       * framework to apps, must report to AppOps, similarly to Location Manager Service - i.e.
       * whenever it reports device location or location identifiable information such as
       * GNSS status, GNSS measurements, etc. to its clients.
       */
      public static boolean doesCallerReportToAppOps(Context context, CallerIdentity callerIdentity) {
          return hasPermissionLocationHardware(context, callerIdentity)
                  && hasPermissionUpdateAppOpsStats(context, callerIdentity);
      }
  
      private static boolean hasPermissionLocationHardware(Context context,
              CallerIdentity callerIdentity) {
          return context.checkPermission(android.Manifest.permission.LOCATION_HARDWARE,
                  callerIdentity.mPid, callerIdentity.mUid) == PackageManager.PERMISSION_GRANTED;
      }
  
      private static boolean hasPermissionUpdateAppOpsStats(Context context,
              CallerIdentity callerIdentity) {
          return context.checkPermission(android.Manifest.permission.UPDATE_APP_OPS_STATS,
                  callerIdentity.mPid, callerIdentity.mUid) == PackageManager.PERMISSION_GRANTED;
      }
  
      private LocationPermissionUtil() {}
  }
  