1 /* 2 * Copyright (C) 2013 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 package com.android.server.location; 17 18 import android.annotation.Nullable; 19 import android.content.ComponentName; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.content.ServiceConnection; 23 import android.hardware.location.GeofenceHardwareService; 24 import android.hardware.location.IGeofenceHardware; 25 import android.location.IGeofenceProvider; 26 import android.location.IGpsGeofenceHardware; 27 import android.os.IBinder; 28 import android.os.RemoteException; 29 import android.os.UserHandle; 30 import android.util.Log; 31 32 import com.android.server.FgThread; 33 import com.android.server.ServiceWatcher; 34 35 import java.util.Objects; 36 37 /** 38 * @hide 39 */ 40 public final class GeofenceProxy { 41 42 private static final String TAG = "GeofenceProxy"; 43 private static final String SERVICE_ACTION = "com.android.location.service.GeofenceProvider"; 44 45 @Nullable createAndBind(Context context, IGpsGeofenceHardware gpsGeofence)46 public static GeofenceProxy createAndBind(Context context, IGpsGeofenceHardware gpsGeofence) { 47 GeofenceProxy proxy = new GeofenceProxy(context, gpsGeofence); 48 if (proxy.register(context)) { 49 return proxy; 50 } else { 51 return null; 52 } 53 } 54 55 private final IGpsGeofenceHardware mGpsGeofenceHardware; 56 private final ServiceWatcher mServiceWatcher; 57 58 private volatile IGeofenceHardware mGeofenceHardware; 59 GeofenceProxy(Context context, IGpsGeofenceHardware gpsGeofence)60 private GeofenceProxy(Context context, IGpsGeofenceHardware gpsGeofence) { 61 mGpsGeofenceHardware = Objects.requireNonNull(gpsGeofence); 62 mServiceWatcher = new ServiceWatcher(context, FgThread.getHandler(), SERVICE_ACTION, 63 this::updateGeofenceHardware, null, 64 com.android.internal.R.bool.config_enableGeofenceOverlay, 65 com.android.internal.R.string.config_geofenceProviderPackageName); 66 67 mGeofenceHardware = null; 68 } 69 updateGeofenceHardware(IBinder binder)70 private void updateGeofenceHardware(IBinder binder) throws RemoteException { 71 IGeofenceProvider.Stub.asInterface(binder).setGeofenceHardware(mGeofenceHardware); 72 } 73 register(Context context)74 private boolean register(Context context) { 75 if (mServiceWatcher.register()) { 76 context.bindServiceAsUser( 77 new Intent(context, GeofenceHardwareService.class), 78 new GeofenceProxyServiceConnection(), 79 Context.BIND_AUTO_CREATE, 80 UserHandle.SYSTEM); 81 return true; 82 } 83 84 return false; 85 } 86 87 private class GeofenceProxyServiceConnection implements ServiceConnection { 88 89 @Override onServiceConnected(ComponentName name, IBinder service)90 public void onServiceConnected(ComponentName name, IBinder service) { 91 IGeofenceHardware geofenceHardware = IGeofenceHardware.Stub.asInterface(service); 92 93 try { 94 geofenceHardware.setGpsGeofenceHardware(mGpsGeofenceHardware); 95 mGeofenceHardware = geofenceHardware; 96 mServiceWatcher.runOnBinder(GeofenceProxy.this::updateGeofenceHardware); 97 } catch (RemoteException e) { 98 Log.w(TAG, "unable to initialize geofence hardware", e); 99 } 100 } 101 102 @Override onServiceDisconnected(ComponentName name)103 public void onServiceDisconnected(ComponentName name) { 104 mGeofenceHardware = null; 105 mServiceWatcher.runOnBinder(GeofenceProxy.this::updateGeofenceHardware); 106 } 107 } 108 } 109