KeyguardService.java revision e9d8272e9af29232471dc2c690675362494f5b0a 
1/*
2 * Copyright (C) 2014 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
17package com.android.systemui.keyguard;
18
19import android.app.Service;
20import android.content.Intent;
21import android.os.Binder;
22import android.os.Bundle;
23import android.os.Debug;
24import android.os.IBinder;
25import android.os.Process;
26import android.os.Trace;
27import android.util.Log;
28
29import com.android.internal.policy.IKeyguardDrawnCallback;
30import com.android.internal.policy.IKeyguardExitCallback;
31import com.android.internal.policy.IKeyguardService;
32import com.android.internal.policy.IKeyguardStateCallback;
33import com.android.systemui.SystemUIApplication;
34
35import static android.content.pm.PackageManager.PERMISSION_GRANTED;
36
37public class KeyguardService extends Service {
38    static final String TAG = "KeyguardService";
39    static final String PERMISSION = android.Manifest.permission.CONTROL_KEYGUARD;
40
41    private KeyguardViewMediator mKeyguardViewMediator;
42
43    @Override
44    public void onCreate() {
45        ((SystemUIApplication) getApplication()).startServicesIfNeeded();
46        mKeyguardViewMediator =
47                ((SystemUIApplication) getApplication()).getComponent(KeyguardViewMediator.class);
48    }
49
50    @Override
51    public IBinder onBind(Intent intent) {
52        return mBinder;
53    }
54
55    void checkPermission() {
56        // Avoid deadlock by avoiding calling back into the system process.
57        if (Binder.getCallingUid() == Process.SYSTEM_UID) return;
58
59        // Otherwise,explicitly check for caller permission ...
60        if (getBaseContext().checkCallingOrSelfPermission(PERMISSION) != PERMISSION_GRANTED) {
61            Log.w(TAG, "Caller needs permission '" + PERMISSION + "' to call " + Debug.getCaller());
62            throw new SecurityException("Access denied to process: " + Binder.getCallingPid()
63                    + ", must have permission " + PERMISSION);
64        }
65    }
66
67    private final IKeyguardService.Stub mBinder = new IKeyguardService.Stub() {
68
69        @Override // Binder interface
70        public void addStateMonitorCallback(IKeyguardStateCallback callback) {
71            checkPermission();
72            mKeyguardViewMediator.addStateMonitorCallback(callback);
73        }
74
75        @Override // Binder interface
76        public void verifyUnlock(IKeyguardExitCallback callback) {
77            Trace.beginSection("KeyguardService.mBinder#verifyUnlock");
78            checkPermission();
79            mKeyguardViewMediator.verifyUnlock(callback);
80            Trace.endSection();
81        }
82
83        @Override // Binder interface
84        public void setOccluded(boolean isOccluded, boolean animate) {
85            Trace.beginSection("KeyguardService.mBinder#setOccluded");
86            checkPermission();
87            mKeyguardViewMediator.setOccluded(isOccluded, animate);
88            Trace.endSection();
89        }
90
91        @Override // Binder interface
92        public void dismiss(boolean allowWhileOccluded) {
93            checkPermission();
94            mKeyguardViewMediator.dismiss(allowWhileOccluded);
95        }
96
97        @Override // Binder interface
98        public void onDreamingStarted() {
99            checkPermission();
100            mKeyguardViewMediator.onDreamingStarted();
101        }
102
103        @Override // Binder interface
104        public void onDreamingStopped() {
105            checkPermission();
106            mKeyguardViewMediator.onDreamingStopped();
107        }
108
109        @Override // Binder interface
110        public void onStartedGoingToSleep(int reason) {
111            checkPermission();
112            mKeyguardViewMediator.onStartedGoingToSleep(reason);
113        }
114
115        @Override // Binder interface
116        public void onFinishedGoingToSleep(int reason, boolean cameraGestureTriggered) {
117            checkPermission();
118            mKeyguardViewMediator.onFinishedGoingToSleep(reason, cameraGestureTriggered);
119        }
120
121        @Override // Binder interface
122        public void onStartedWakingUp() {
123            Trace.beginSection("KeyguardService.mBinder#onStartedWakingUp");
124            checkPermission();
125            mKeyguardViewMediator.onStartedWakingUp();
126            Trace.endSection();
127        }
128
129        @Override // Binder interface
130        public void onScreenTurningOn(IKeyguardDrawnCallback callback) {
131            Trace.beginSection("KeyguardService.mBinder#onScreenTurningOn");
132            checkPermission();
133            mKeyguardViewMediator.onScreenTurningOn(callback);
134            Trace.endSection();
135        }
136
137        @Override // Binder interface
138        public void onScreenTurnedOn() {
139            Trace.beginSection("KeyguardService.mBinder#onScreenTurnedOn");
140            checkPermission();
141            mKeyguardViewMediator.onScreenTurnedOn();
142            Trace.endSection();
143        }
144
145        @Override // Binder interface
146        public void onScreenTurnedOff() {
147            checkPermission();
148            mKeyguardViewMediator.onScreenTurnedOff();
149        }
150
151        @Override // Binder interface
152        public void setKeyguardEnabled(boolean enabled) {
153            checkPermission();
154            mKeyguardViewMediator.setKeyguardEnabled(enabled);
155        }
156
157        @Override // Binder interface
158        public void onSystemReady() {
159            Trace.beginSection("KeyguardService.mBinder#onSystemReady");
160            checkPermission();
161            mKeyguardViewMediator.onSystemReady();
162            Trace.endSection();
163        }
164
165        @Override // Binder interface
166        public void doKeyguardTimeout(Bundle options) {
167            checkPermission();
168            mKeyguardViewMediator.doKeyguardTimeout(options);
169        }
170
171        @Override // Binder interface
172        public void setSwitchingUser(boolean switching) {
173            checkPermission();
174            mKeyguardViewMediator.setSwitchingUser(switching);
175        }
176
177        @Override // Binder interface
178        public void setCurrentUser(int userId) {
179            checkPermission();
180            mKeyguardViewMediator.setCurrentUser(userId);
181        }
182
183        @Override
184        public void onBootCompleted() {
185            checkPermission();
186            mKeyguardViewMediator.onBootCompleted();
187        }
188
189        @Override
190        public void startKeyguardExitAnimation(long startTime, long fadeoutDuration) {
191            Trace.beginSection("KeyguardService.mBinder#startKeyguardExitAnimation");
192            checkPermission();
193            mKeyguardViewMediator.startKeyguardExitAnimation(startTime, fadeoutDuration);
194            Trace.endSection();
195        }
196    };
197}
198
199