1 /*
2  * Copyright (C) 2015 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 android.car.content.pm;
17 
18 import android.annotation.SystemApi;
19 import android.app.Service;
20 import android.car.Car;
21 import android.content.Intent;
22 import android.os.Handler;
23 import android.os.IBinder;
24 import android.os.RemoteException;
25 import android.util.Log;
26 
27 /**
28  * Service to be implemented by Service which wants to control app blocking policy.
29  * App should require android.car.permission.CONTROL_APP_BLOCKING to launch Service
30  * implementation. Additionally the APK should have the permission to be launched by Car Service.
31  * The implementing service should declare {@link #SERVICE_INTERFACE} in its intent filter as
32  * action.
33  * @hide
34  */
35 @SystemApi
36 public abstract class CarAppBlockingPolicyService extends Service {
37 
38     private static final String TAG = CarAppBlockingPolicyService.class.getSimpleName();
39 
40     public static final String SERVICE_INTERFACE =
41             "android.car.content.pm.CarAppBlockingPolicyService";
42 
43     private final ICarAppBlockingPolicyImpl mBinder = new ICarAppBlockingPolicyImpl();
44     private Handler mHandler;
45 
46     /**
47      * Return the app blocking policy. This is called from binder thread.
48      * @return
49      */
getAppBlockingPolicy()50     protected abstract CarAppBlockingPolicy getAppBlockingPolicy();
51 
52     @Override
onStartCommand(Intent intent, int flags, int startId)53     public int onStartCommand(Intent intent, int flags, int startId) {
54         return START_STICKY;
55     }
56 
57     @Override
onBind(Intent intent)58     public IBinder onBind(Intent intent) {
59         Log.i(TAG, "onBind");
60         return mBinder;
61     }
62 
63     @Override
onUnbind(Intent intent)64     public boolean onUnbind(Intent intent) {
65         Log.i(TAG, "onUnbind");
66         stopSelf();
67         return false;
68     }
69 
70 
71     private class ICarAppBlockingPolicyImpl extends ICarAppBlockingPolicy.Stub {
72 
73         @Override
setAppBlockingPolicySetter(ICarAppBlockingPolicySetter setter)74         public void setAppBlockingPolicySetter(ICarAppBlockingPolicySetter setter) {
75             Log.i(TAG, "setAppBlockingPolicySetter will set policy");
76             CarAppBlockingPolicy policy = CarAppBlockingPolicyService.this.getAppBlockingPolicy();
77             try {
78                 setter.setAppBlockingPolicy(policy);
79             } catch (RemoteException e) {
80                 Car.handleRemoteExceptionFromCarService(CarAppBlockingPolicyService.this, e);
81             }
82         }
83     }
84 }
85