| /* |
| * Copyright (C) 2018 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 com.android.car.settings.security; |
| |
| import android.os.Bundle; |
| |
| import androidx.fragment.app.Fragment; |
| |
| import com.android.car.settings.common.Logger; |
| import com.android.internal.widget.LockPatternChecker; |
| import com.android.internal.widget.LockPatternUtils; |
| import com.android.internal.widget.LockPatternView; |
| |
| import java.util.List; |
| |
| /** |
| * An invisible retained worker fragment to track the AsyncTask that checks the entered lock |
| * credential (pattern/pin/password). |
| */ |
| public class CheckLockWorker extends Fragment implements LockPatternChecker.OnCheckCallback { |
| |
| private static final Logger LOG = new Logger(CheckLockWorker.class); |
| |
| private boolean mHasPendingResult; |
| private boolean mLockMatched; |
| private boolean mCheckInProgress; |
| private Listener mListener; |
| private LockPatternUtils mLockPatternUtils; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| setRetainInstance(true); |
| mLockPatternUtils = new LockPatternUtils(getContext()); |
| } |
| |
| @Override |
| public void onChecked(boolean matched, int throttleTimeoutMs) { |
| mCheckInProgress = false; |
| |
| if (mListener == null) { |
| mHasPendingResult = true; |
| mLockMatched = matched; |
| } else { |
| mListener.onCheckCompleted(matched); |
| } |
| } |
| |
| /** |
| * Sets the listener for callback when lock check is completed. |
| */ |
| public void setListener(Listener listener) { |
| mListener = listener; |
| if (mListener != null && mHasPendingResult) { |
| mHasPendingResult = false; |
| mListener.onCheckCompleted(mLockMatched); |
| } |
| } |
| |
| /** Returns whether a lock check is in progress. */ |
| public final boolean isCheckInProgress() { |
| return mCheckInProgress; |
| } |
| |
| /** |
| * Checks lock pattern asynchronously. To receive callback when check is completed, |
| * implement {@link Listener} and call {@link #setListener(Listener)}. |
| */ |
| public final void checkPattern(int userId, List<LockPatternView.Cell> pattern) { |
| if (mCheckInProgress) { |
| LOG.w("Check pattern request issued while one is still running"); |
| return; |
| } |
| |
| mCheckInProgress = true; |
| LockPatternChecker.checkPattern(mLockPatternUtils, pattern, userId, this); |
| } |
| |
| /** |
| * Checks lock PIN/password asynchronously. To receive callback when check is completed, |
| * implement {@link Listener} and call {@link #setListener(Listener)}. |
| */ |
| public final void checkPinPassword(int userId, byte[] password) { |
| if (mCheckInProgress) { |
| LOG.w("Check pin/password request issued while one is still running"); |
| return; |
| } |
| mCheckInProgress = true; |
| LockPatternChecker.checkPassword(mLockPatternUtils, password, userId, this); |
| } |
| |
| /** |
| * Callback when lock check is completed. |
| */ |
| interface Listener { |
| /** |
| * @param matched Whether the entered password matches the stored record. |
| */ |
| void onCheckCompleted(boolean matched); |
| } |
| } |
| |