1 /* 2 * Copyright (C) 2017 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.car; 17 18 import android.app.Service; 19 import android.car.ICarBluetoothUserService; 20 import android.car.ICarUserService; 21 import android.content.Intent; 22 import android.os.IBinder; 23 import android.util.Log; 24 25 /** 26 * {@link CarService} process runs as the System User. When logged in as a different user, some 27 * services do not provide an API to register or bind as a User, hence CarService doesn't receive 28 * the events from services/processes running as a non-system user. 29 * 30 * This Service is run as the Current User on every User Switch and components of CarService can 31 * use this service to communicate with services/processes running as the current (non-system) user. 32 */ 33 public class PerUserCarService extends Service { 34 private static final boolean DBG = true; 35 private static final String TAG = "CarUserService"; 36 private CarBluetoothUserService mCarBluetoothUserService; 37 private CarUserServiceBinder mCarUserServiceBinder; 38 39 @Override onBind(Intent intent)40 public IBinder onBind(Intent intent) { 41 if (DBG) { 42 Log.d(TAG, "onBind()"); 43 } 44 if (mCarUserServiceBinder == null) { 45 Log.e(TAG, "UserSvcBinder null"); 46 } 47 return mCarUserServiceBinder; 48 } 49 50 @Override onStartCommand(Intent intent, int flags, int startId)51 public int onStartCommand(Intent intent, int flags, int startId) { 52 if (DBG) { 53 Log.d(TAG, "onStart()"); 54 } 55 return START_STICKY; 56 } 57 58 @Override onCreate()59 public void onCreate() { 60 if (DBG) { 61 Log.d(TAG, "onCreate()"); 62 } 63 mCarUserServiceBinder = new CarUserServiceBinder(this); 64 super.onCreate(); 65 } 66 67 @Override onDestroy()68 public void onDestroy() { 69 if (DBG) { 70 Log.d(TAG, "onDestroy()"); 71 } 72 mCarBluetoothUserService = null; 73 mCarUserServiceBinder = null; 74 } 75 createBluetoothUserService()76 public void createBluetoothUserService() { 77 if (DBG) { 78 Log.d(TAG, "createBluetoothUserService"); 79 } 80 mCarBluetoothUserService = new CarBluetoothUserService(this); 81 } 82 83 /** 84 * Other Services in CarService can create their own Binder interface and receive that interface 85 * through this CarUserService binder. 86 */ 87 private final class CarUserServiceBinder extends ICarUserService.Stub { 88 private PerUserCarService mCarUserService; 89 CarUserServiceBinder(PerUserCarService service)90 public CarUserServiceBinder(PerUserCarService service) { 91 mCarUserService = service; 92 } 93 94 @Override getBluetoothUserService()95 public ICarBluetoothUserService getBluetoothUserService() { 96 // Create the bluetoothUserService when needed. 97 if (mCarBluetoothUserService == null) { 98 mCarUserService.createBluetoothUserService(); 99 } 100 return mCarBluetoothUserService; 101 } 102 } 103 } 104