1 /* 2 * Copyright (C) 2022 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.rkpdapp.service; 18 19 import android.app.Service; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.os.IBinder; 23 import android.os.RemoteException; 24 import android.util.Log; 25 26 import com.android.rkpdapp.IGetRegistrationCallback; 27 import com.android.rkpdapp.IRegistration; 28 import com.android.rkpdapp.IRemoteProvisioning; 29 import com.android.rkpdapp.ThreadPool; 30 import com.android.rkpdapp.database.ProvisionedKeyDao; 31 import com.android.rkpdapp.database.RkpdDatabase; 32 import com.android.rkpdapp.interfaces.ServerInterface; 33 import com.android.rkpdapp.interfaces.ServiceManagerInterface; 34 import com.android.rkpdapp.interfaces.SystemInterface; 35 import com.android.rkpdapp.metrics.RkpdClientOperation; 36 import com.android.rkpdapp.provisioner.Provisioner; 37 import com.android.rkpdapp.utils.Settings; 38 39 /** Provides the implementation for IRemoteProvisioning.aidl */ 40 public class RemoteProvisioningService extends Service { 41 public static final String TAG = "com.android.rkpdapp"; 42 private final IRemoteProvisioning.Stub mBinder = new RemoteProvisioningBinder(); 43 44 @Override onCreate()45 public void onCreate() { 46 super.onCreate(); 47 } 48 49 @Override onBind(Intent intent)50 public IBinder onBind(Intent intent) { 51 return mBinder; 52 } 53 54 final class RemoteProvisioningBinder extends IRemoteProvisioning.Stub { 55 @Override getRegistration(int callerUid, String irpcName, IGetRegistrationCallback callback)56 public void getRegistration(int callerUid, String irpcName, 57 IGetRegistrationCallback callback) { 58 final Context context = getApplicationContext(); 59 RkpdClientOperation metric = RkpdClientOperation.getRegistration(callerUid, irpcName); 60 try (metric) { 61 if (Settings.getDefaultUrl().isEmpty()) { 62 callback.onError("RKP is disabled. System configured with no default URL."); 63 metric.setResult(RkpdClientOperation.Result.RKP_UNSUPPORTED); 64 return; 65 } 66 67 SystemInterface systemInterface; 68 try { 69 systemInterface = ServiceManagerInterface.getInstance(irpcName); 70 } catch (IllegalArgumentException e) { 71 Log.e(TAG, "Error getting HAL '" + irpcName + "'", e); 72 callback.onError("Invalid HAL name: " + irpcName); 73 metric.setResult(RkpdClientOperation.Result.ERROR_INVALID_HAL); 74 return; 75 } 76 77 ProvisionedKeyDao dao = RkpdDatabase.getDatabase(context).provisionedKeyDao(); 78 Provisioner provisioner = new Provisioner(context, dao); 79 IRegistration.Stub registration = new RegistrationBinder(context, callerUid, 80 systemInterface, dao, new ServerInterface(context), provisioner, 81 ThreadPool.EXECUTOR); 82 metric.setResult(RkpdClientOperation.Result.SUCCESS); 83 callback.onSuccess(registration); 84 } catch (RemoteException e) { 85 Log.e(TAG, "Error notifying callback binder", e); 86 metric.setResult(RkpdClientOperation.Result.ERROR_INTERNAL); 87 throw e.rethrowAsRuntimeException(); 88 } 89 } 90 91 @Override cancelGetRegistration(IGetRegistrationCallback callback)92 public void cancelGetRegistration(IGetRegistrationCallback callback) { 93 // Not actually supported on this end of the transaction, because we always 94 // complete, and there's no way to win the race. 95 Log.i(TAG, "cancelGetRegistration"); 96 } 97 } 98 } 99