Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 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 | |
Jorim Jaggi | b10e33f | 2015-02-04 21:57:40 +0100 | [diff] [blame] | 17 | package com.android.server.policy.keyguard; |
Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 18 | |
| 19 | import android.app.ActivityManager; |
| 20 | import android.content.Context; |
| 21 | import android.os.RemoteException; |
Brian Young | 9272dab | 2018-02-23 18:04:20 +0000 | [diff] [blame] | 22 | import android.os.ServiceManager; |
| 23 | import android.security.IKeystoreService; |
Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 24 | import android.util.Slog; |
| 25 | |
| 26 | import com.android.internal.policy.IKeyguardService; |
| 27 | import com.android.internal.policy.IKeyguardStateCallback; |
| 28 | import com.android.internal.widget.LockPatternUtils; |
| 29 | |
Jorim Jaggi | 84dc08a | 2015-09-11 17:45:22 -0700 | [diff] [blame] | 30 | import java.io.PrintWriter; |
| 31 | |
Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 32 | /** |
| 33 | * Maintains a cached copy of Keyguard's state. |
| 34 | * @hide |
| 35 | */ |
| 36 | public class KeyguardStateMonitor extends IKeyguardStateCallback.Stub { |
| 37 | private static final String TAG = "KeyguardStateMonitor"; |
| 38 | |
| 39 | // These cache the current state of Keyguard to improve performance and avoid deadlock. After |
| 40 | // Keyguard changes its state, it always triggers a layout in window manager. Because |
| 41 | // IKeyguardStateCallback is synchronous and because these states are declared volatile, it's |
| 42 | // guaranteed that window manager picks up the new state all the time in the layout caused by |
Adrian Roos | 02a2888 | 2015-06-03 17:06:46 -0700 | [diff] [blame] | 43 | // the state change of Keyguard. To be extra safe, assume most restrictive values until Keyguard |
| 44 | // tells us the actual value. |
| 45 | private volatile boolean mIsShowing = true; |
| 46 | private volatile boolean mSimSecure = true; |
| 47 | private volatile boolean mInputRestricted = true; |
Adrian Roos | d88eb26 | 2016-08-04 14:50:48 -0700 | [diff] [blame] | 48 | private volatile boolean mTrusted = false; |
Jorim Jaggi | d11d1a9 | 2016-08-16 16:02:32 -0700 | [diff] [blame] | 49 | private volatile boolean mHasLockscreenWallpaper = false; |
Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 50 | |
Adrian Roos | d6aa6cb | 2015-04-16 19:31:29 -0700 | [diff] [blame] | 51 | private int mCurrentUserId; |
| 52 | |
Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 53 | private final LockPatternUtils mLockPatternUtils; |
Jorim Jaggi | e69c931 | 2016-10-31 18:24:38 -0700 | [diff] [blame] | 54 | private final StateCallback mCallback; |
Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 55 | |
Brian Young | 9272dab | 2018-02-23 18:04:20 +0000 | [diff] [blame] | 56 | IKeystoreService mKeystoreService; |
| 57 | |
Jorim Jaggi | e69c931 | 2016-10-31 18:24:38 -0700 | [diff] [blame] | 58 | public KeyguardStateMonitor(Context context, IKeyguardService service, StateCallback callback) { |
Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 59 | mLockPatternUtils = new LockPatternUtils(context); |
Adrian Roos | d6aa6cb | 2015-04-16 19:31:29 -0700 | [diff] [blame] | 60 | mCurrentUserId = ActivityManager.getCurrentUser(); |
Jorim Jaggi | e69c931 | 2016-10-31 18:24:38 -0700 | [diff] [blame] | 61 | mCallback = callback; |
Jorim Jaggi | fe76234 | 2016-10-13 14:33:27 +0200 | [diff] [blame] | 62 | |
Brian Young | 9272dab | 2018-02-23 18:04:20 +0000 | [diff] [blame] | 63 | mKeystoreService = IKeystoreService.Stub.asInterface(ServiceManager |
| 64 | .getService("android.security.keystore")); |
| 65 | |
Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 66 | try { |
| 67 | service.addStateMonitorCallback(this); |
| 68 | } catch (RemoteException e) { |
| 69 | Slog.w(TAG, "Remote Exception", e); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | public boolean isShowing() { |
| 74 | return mIsShowing; |
| 75 | } |
| 76 | |
Jim Miller | e4044bb | 2016-05-10 18:38:25 -0700 | [diff] [blame] | 77 | public boolean isSecure(int userId) { |
| 78 | return mLockPatternUtils.isSecure(userId) || mSimSecure; |
Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 79 | } |
| 80 | |
| 81 | public boolean isInputRestricted() { |
| 82 | return mInputRestricted; |
| 83 | } |
| 84 | |
Adrian Roos | d88eb26 | 2016-08-04 14:50:48 -0700 | [diff] [blame] | 85 | public boolean isTrusted() { |
| 86 | return mTrusted; |
| 87 | } |
| 88 | |
Jorim Jaggi | d11d1a9 | 2016-08-16 16:02:32 -0700 | [diff] [blame] | 89 | public boolean hasLockscreenWallpaper() { |
| 90 | return mHasLockscreenWallpaper; |
| 91 | } |
| 92 | |
Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 93 | @Override // Binder interface |
| 94 | public void onShowingStateChanged(boolean showing) { |
| 95 | mIsShowing = showing; |
Brian Young | 9272dab | 2018-02-23 18:04:20 +0000 | [diff] [blame] | 96 | |
Adrian Roos | 4163d62 | 2018-05-22 16:56:35 +0200 | [diff] [blame] | 97 | mCallback.onShowingChanged(); |
Janis Danisevskis | 01c3c2f | 2018-10-10 09:32:39 -0700 | [diff] [blame] | 98 | int retry = 2; |
| 99 | while (retry > 0) { |
| 100 | try { |
| 101 | mKeystoreService.onKeyguardVisibilityChanged(showing, mCurrentUserId); |
| 102 | break; |
| 103 | } catch (RemoteException e) { |
| 104 | if (retry == 2) { |
| 105 | Slog.w(TAG, "Error informing keystore of screen lock. Keystore may have died" |
| 106 | + " -> refreshing service token and retrying"); |
| 107 | mKeystoreService = IKeystoreService.Stub.asInterface(ServiceManager |
| 108 | .getService("android.security.keystore")); |
| 109 | } else { |
| 110 | Slog.e(TAG, "Error informing keystore of screen lock after retrying once", e); |
| 111 | } |
| 112 | --retry; |
| 113 | } |
Brian Young | 9272dab | 2018-02-23 18:04:20 +0000 | [diff] [blame] | 114 | } |
Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 115 | } |
| 116 | |
| 117 | @Override // Binder interface |
| 118 | public void onSimSecureStateChanged(boolean simSecure) { |
| 119 | mSimSecure = simSecure; |
| 120 | } |
| 121 | |
Adrian Roos | d6aa6cb | 2015-04-16 19:31:29 -0700 | [diff] [blame] | 122 | public synchronized void setCurrentUser(int userId) { |
| 123 | mCurrentUserId = userId; |
| 124 | } |
| 125 | |
| 126 | private synchronized int getCurrentUser() { |
| 127 | return mCurrentUserId; |
Jim Miller | ab95454 | 2014-10-10 18:21:49 -0700 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | @Override // Binder interface |
| 131 | public void onInputRestrictedStateChanged(boolean inputRestricted) { |
| 132 | mInputRestricted = inputRestricted; |
| 133 | } |
Jorim Jaggi | 84dc08a | 2015-09-11 17:45:22 -0700 | [diff] [blame] | 134 | |
Adrian Roos | d88eb26 | 2016-08-04 14:50:48 -0700 | [diff] [blame] | 135 | @Override // Binder interface |
| 136 | public void onTrustedChanged(boolean trusted) { |
| 137 | mTrusted = trusted; |
Jorim Jaggi | e69c931 | 2016-10-31 18:24:38 -0700 | [diff] [blame] | 138 | mCallback.onTrustedChanged(); |
Adrian Roos | d88eb26 | 2016-08-04 14:50:48 -0700 | [diff] [blame] | 139 | } |
| 140 | |
Jorim Jaggi | d11d1a9 | 2016-08-16 16:02:32 -0700 | [diff] [blame] | 141 | @Override // Binder interface |
| 142 | public void onHasLockscreenWallpaperChanged(boolean hasLockscreenWallpaper) { |
| 143 | mHasLockscreenWallpaper = hasLockscreenWallpaper; |
| 144 | } |
| 145 | |
Jorim Jaggi | e69c931 | 2016-10-31 18:24:38 -0700 | [diff] [blame] | 146 | public interface StateCallback { |
| 147 | void onTrustedChanged(); |
Adrian Roos | 4163d62 | 2018-05-22 16:56:35 +0200 | [diff] [blame] | 148 | void onShowingChanged(); |
Jorim Jaggi | e69c931 | 2016-10-31 18:24:38 -0700 | [diff] [blame] | 149 | } |
| 150 | |
Jorim Jaggi | 84dc08a | 2015-09-11 17:45:22 -0700 | [diff] [blame] | 151 | public void dump(String prefix, PrintWriter pw) { |
| 152 | pw.println(prefix + TAG); |
| 153 | prefix += " "; |
| 154 | pw.println(prefix + "mIsShowing=" + mIsShowing); |
| 155 | pw.println(prefix + "mSimSecure=" + mSimSecure); |
| 156 | pw.println(prefix + "mInputRestricted=" + mInputRestricted); |
Adrian Roos | d88eb26 | 2016-08-04 14:50:48 -0700 | [diff] [blame] | 157 | pw.println(prefix + "mTrusted=" + mTrusted); |
Jorim Jaggi | 84dc08a | 2015-09-11 17:45:22 -0700 | [diff] [blame] | 158 | pw.println(prefix + "mCurrentUserId=" + mCurrentUserId); |
| 159 | } |
Brian Young | 36716eb | 2018-02-23 18:04:20 +0000 | [diff] [blame] | 160 | } |