KeyguardService.java revision 6626f54e658e3da44fab8a5cd6d9d3d4852e2cd1 
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 keyguardDone(boolean authenticated, boolean wakeup) {
85            Trace.beginSection("KeyguardService.mBinder#keyguardDone");
86            checkPermission();
87            // TODO: Remove wakeup
88            mKeyguardViewMediator.keyguardDone(authenticated);
89            Trace.endSection();
90        }
91
92        @Override // Binder interface
93        public void setOccluded(boolean isOccluded, boolean animate) {
94            Trace.beginSection("KeyguardService.mBinder#setOccluded");
95            checkPermission();
96            mKeyguardViewMediator.setOccluded(isOccluded, animate);
97            Trace.endSection();
98        }
99
100        @Override // Binder interface
101        public void dismiss(boolean allowWhileOccluded) {
102            checkPermission();
103            mKeyguardViewMediator.dismiss(allowWhileOccluded);
104        }
105
106        @Override // Binder interface
107        public void onDreamingStarted() {
108            checkPermission();
109            mKeyguardViewMediator.onDreamingStarted();
110        }
111
112        @Override // Binder interface
113        public void onDreamingStopped() {
114            checkPermission();
115            mKeyguardViewMediator.onDreamingStopped();
116        }
117
118        @Override // Binder interface
119        public void onStartedGoingToSleep(int reason) {
120            checkPermission();
121            mKeyguardViewMediator.onStartedGoingToSleep(reason);
122        }
123
124        @Override // Binder interface
125        public void onFinishedGoingToSleep(int reason, boolean cameraGestureTriggered) {
126            checkPermission();
127            mKeyguardViewMediator.onFinishedGoingToSleep(reason, cameraGestureTriggered);
128        }
129
130        @Override // Binder interface
131        public void onStartedWakingUp() {
132            Trace.beginSection("KeyguardService.mBinder#onStartedWakingUp");
133            checkPermission();
134            mKeyguardViewMediator.onStartedWakingUp();
135            Trace.endSection();
136        }
137
138        @Override // Binder interface
139        public void onScreenTurningOn(IKeyguardDrawnCallback callback) {
140            Trace.beginSection("KeyguardService.mBinder#onScreenTurningOn");
141            checkPermission();
142            mKeyguardViewMediator.onScreenTurningOn(callback);
143            Trace.endSection();
144        }
145
146        @Override // Binder interface
147        public void onScreenTurnedOn() {
148            Trace.beginSection("KeyguardService.mBinder#onScreenTurningOn");
149            checkPermission();
150            mKeyguardViewMediator.onScreenTurnedOn();
151            Trace.endSection();
152        }
153
154        @Override // Binder interface
155        public void onScreenTurnedOff() {
156            checkPermission();
157            mKeyguardViewMediator.onScreenTurnedOff();
158        }
159
160        @Override // Binder interface
161        public void setKeyguardEnabled(boolean enabled) {
162            checkPermission();
163            mKeyguardViewMediator.setKeyguardEnabled(enabled);
164        }
165
166        @Override // Binder interface
167        public void onSystemReady() {
168            Trace.beginSection("KeyguardService.mBinder#onSystemReady");
169            checkPermission();
170            mKeyguardViewMediator.onSystemReady();
171            Trace.endSection();
172        }
173
174        @Override // Binder interface
175        public void doKeyguardTimeout(Bundle options) {
176            checkPermission();
177            mKeyguardViewMediator.doKeyguardTimeout(options);
178        }
179
180        @Override // Binder interface
181        public void setCurrentUser(int userId) {
182            checkPermission();
183            mKeyguardViewMediator.setCurrentUser(userId);
184        }
185
186        @Override
187        public void onBootCompleted() {
188            checkPermission();
189            mKeyguardViewMediator.onBootCompleted();
190        }
191
192        @Override
193        public void startKeyguardExitAnimation(long startTime, long fadeoutDuration) {
194            Trace.beginSection("KeyguardService.mBinder#startKeyguardExitAnimation");
195            checkPermission();
196            mKeyguardViewMediator.startKeyguardExitAnimation(startTime, fadeoutDuration);
197            Trace.endSection();
198        }
199
200        @Override
201        public void onActivityDrawn() {
202            checkPermission();
203            mKeyguardViewMediator.onActivityDrawn();
204        }
205    };
206}
207
208