Anil Admal | 08b9612 | 2019-01-30 16:55:05 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.location; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.content.pm.PackageManager; |
| 21 | |
| 22 | /** |
| 23 | * Encapsulates utility functions and classes related to location permission checking. |
| 24 | */ |
| 25 | public final class LocationPermissionUtil { |
| 26 | /** |
| 27 | * Returns true if the calling process identified by {@code callerIdentity} is enabled to |
| 28 | * report location to AppOps service before providing device location identifiable information |
| 29 | * to its clients. Packages with these permissions must report any reporting of location |
| 30 | * information to apps, via AppOps. |
| 31 | * |
| 32 | * <p>The calling package represented by {@code callerIdentity} is considered a part of the |
| 33 | * extended Location Manager Service if it has all of the permissions below. |
| 34 | * <ul> |
| 35 | * <li>{@link android.Manifest.permission#LOCATION_HARDWARE} |
| 36 | * <li>{@link android.Manifest.permission#UPDATE_APP_OPS_STATS} |
| 37 | * </ul> |
| 38 | * |
| 39 | * <p>Any package with these permissions, that passes along location information from Android |
| 40 | * framework to apps, must report to AppOps, similarly to Location Manager Service - i.e. |
| 41 | * whenever it reports device location or location identifiable information such as |
| 42 | * GNSS status, GNSS measurements, etc. to its clients. |
| 43 | */ |
| 44 | public static boolean doesCallerReportToAppOps(Context context, CallerIdentity callerIdentity) { |
| 45 | return hasPermissionLocationHardware(context, callerIdentity) |
| 46 | && hasPermissionUpdateAppOpsStats(context, callerIdentity); |
| 47 | } |
| 48 | |
| 49 | private static boolean hasPermissionLocationHardware(Context context, |
| 50 | CallerIdentity callerIdentity) { |
| 51 | return context.checkPermission(android.Manifest.permission.LOCATION_HARDWARE, |
| 52 | callerIdentity.mPid, callerIdentity.mUid) == PackageManager.PERMISSION_GRANTED; |
| 53 | } |
| 54 | |
| 55 | private static boolean hasPermissionUpdateAppOpsStats(Context context, |
| 56 | CallerIdentity callerIdentity) { |
| 57 | return context.checkPermission(android.Manifest.permission.UPDATE_APP_OPS_STATS, |
| 58 | callerIdentity.mPid, callerIdentity.mUid) == PackageManager.PERMISSION_GRANTED; |
| 59 | } |
| 60 | |
| 61 | private LocationPermissionUtil() {} |
| 62 | } |