| /* |
| * Copyright (C) 2023 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.service.remotelockscreenvalidation; |
| |
| import static com.android.internal.util.function.pooled.PooledLambda.obtainMessage; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.SdkConstant; |
| import android.annotation.SystemApi; |
| import android.app.RemoteLockscreenValidationResult; |
| import android.app.Service; |
| import android.content.Intent; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.OutcomeReceiver; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| /** |
| * Provides an interface to validate a remote device's lockscreen |
| * @hide |
| */ |
| @SystemApi |
| public abstract class RemoteLockscreenValidationService extends Service { |
| |
| /** |
| * The {@link Intent} that must be declared as handled by the service. To be supported, the |
| * service must also require the |
| * {@link android.Manifest.permission#BIND_REMOTE_LOCKSCREEN_VALIDATION_SERVICE} |
| * permission so that other applications can not abuse it. |
| */ |
| @SdkConstant(SdkConstant.SdkConstantType.SERVICE_ACTION) |
| public static final String SERVICE_INTERFACE = |
| "android.service.remotelockscreenvalidation.RemoteLockscreenValidationService"; |
| private static final String TAG = RemoteLockscreenValidationService.class.getSimpleName(); |
| |
| private final Handler mHandler = new Handler(Looper.getMainLooper()); |
| private final IRemoteLockscreenValidationService mInterface = |
| new IRemoteLockscreenValidationService.Stub() { |
| @Override |
| public void validateLockscreenGuess( |
| byte[] guess, IRemoteLockscreenValidationCallback callback) { |
| mHandler.sendMessage(obtainMessage( |
| RemoteLockscreenValidationService::onValidateLockscreenGuess, |
| RemoteLockscreenValidationService.this, guess, |
| new OutcomeReceiver<RemoteLockscreenValidationResult, |
| Exception>() { |
| @Override |
| public void onResult(RemoteLockscreenValidationResult result) { |
| try { |
| callback.onSuccess(result); |
| } catch (RemoteException e) { |
| e.rethrowFromSystemServer(); |
| } |
| } |
| @Override |
| public void onError(Exception e) { |
| try { |
| callback.onFailure(e.getMessage()); |
| } catch (RemoteException ex) { |
| ex.rethrowFromSystemServer(); |
| } |
| } |
| } |
| )); |
| } |
| }; |
| |
| @Override |
| @Nullable |
| public final IBinder onBind(@NonNull Intent intent) { |
| if (!SERVICE_INTERFACE.equals(intent.getAction())) { |
| Log.w(TAG, "Wrong action"); |
| return null; |
| } |
| return mInterface.asBinder(); |
| } |
| |
| /** |
| * Validates the lockscreen guess. |
| * |
| * <p>Implementation should send guess to remote device and perform lockscreen validation |
| * using {@link android.app.KeyguardManager#validateRemoteLockScreen}. |
| * |
| * @param guess lockscreen guess |
| * @param callback object used to relay the response of the guess validation |
| */ |
| public abstract void onValidateLockscreenGuess(@NonNull byte[] guess, |
| @NonNull OutcomeReceiver<RemoteLockscreenValidationResult, Exception> callback); |
| } |