1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/*
* 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 com.android.internal.widget.LockscreenCredential;
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 int mThrottleTimeoutMs;
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;
mThrottleTimeoutMs = throttleTimeoutMs;
} else {
mListener.onCheckCompleted(matched, throttleTimeoutMs);
}
}
/**
* 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, mThrottleTimeoutMs);
}
}
/** 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.checkCredential(mLockPatternUtils,
LockscreenCredential.createPattern(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, LockscreenCredential password) {
if (mCheckInProgress) {
LOG.w("Check pin/password request issued while one is still running");
return;
}
if (password == null || password.isNone()) {
LOG.w("Empty pin/password LockscreenCredential");
return;
}
mCheckInProgress = true;
LockPatternChecker.checkCredential(mLockPatternUtils, password, userId, this);
}
/**
* Callback when lock check is completed.
*/
interface Listener {
/**
* @param matched Whether the entered password matches the stored record.
* @param timeoutMs The remaining amount of time that the user is locked out from
* retrying the password challenge.
*/
void onCheckCompleted(boolean matched, int timeoutMs);
}
}
|
