NotificationManagerService.java revision 866b25425e84f72911abc0e0ff8141f11c0980cc 
1/*
2 * Copyright (C) 2007 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.server.notification;
18
19import static org.xmlpull.v1.XmlPullParser.END_DOCUMENT;
20import static org.xmlpull.v1.XmlPullParser.END_TAG;
21import static org.xmlpull.v1.XmlPullParser.START_TAG;
22
23import android.app.ActivityManager;
24import android.app.ActivityManagerNative;
25import android.app.AppGlobals;
26import android.app.AppOpsManager;
27import android.app.IActivityManager;
28import android.app.INotificationManager;
29import android.app.ITransientNotification;
30import android.app.Notification;
31import android.app.PendingIntent;
32import android.app.StatusBarManager;
33import android.content.BroadcastReceiver;
34import android.content.ComponentName;
35import android.content.ContentResolver;
36import android.content.Context;
37import android.content.Intent;
38import android.content.IntentFilter;
39import android.content.ServiceConnection;
40import android.content.pm.ApplicationInfo;
41import android.content.pm.PackageInfo;
42import android.content.pm.PackageManager;
43import android.content.pm.ResolveInfo;
44import android.content.pm.ServiceInfo;
45import android.content.pm.PackageManager.NameNotFoundException;
46import android.content.res.Resources;
47import android.database.ContentObserver;
48import android.graphics.Bitmap;
49import android.media.AudioManager;
50import android.media.IRingtonePlayer;
51import android.net.Uri;
52import android.os.Binder;
53import android.os.Handler;
54import android.os.IBinder;
55import android.os.Message;
56import android.os.Process;
57import android.os.RemoteException;
58import android.os.UserHandle;
59import android.os.Vibrator;
60import android.provider.Settings;
61import android.service.notification.INotificationListener;
62import android.service.notification.NotificationListenerService;
63import android.service.notification.StatusBarNotification;
64import android.telephony.TelephonyManager;
65import android.text.TextUtils;
66import android.util.AtomicFile;
67import android.util.EventLog;
68import android.util.Log;
69import android.util.Slog;
70import android.util.Xml;
71import android.view.accessibility.AccessibilityEvent;
72import android.view.accessibility.AccessibilityManager;
73import android.widget.Toast;
74
75import com.android.internal.R;
76
77import com.android.internal.notification.NotificationScorer;
78import com.android.server.EventLogTags;
79import com.android.server.statusbar.StatusBarManagerInternal;
80import com.android.server.SystemService;
81import com.android.server.lights.Light;
82import com.android.server.lights.LightsManager;
83
84import org.xmlpull.v1.XmlPullParser;
85import org.xmlpull.v1.XmlPullParserException;
86
87import java.io.File;
88import java.io.FileDescriptor;
89import java.io.FileInputStream;
90import java.io.FileNotFoundException;
91import java.io.IOException;
92import java.io.PrintWriter;
93import java.lang.reflect.Array;
94import java.util.ArrayDeque;
95import java.util.ArrayList;
96import java.util.Arrays;
97import java.util.HashSet;
98import java.util.Iterator;
99import java.util.List;
100import java.util.NoSuchElementException;
101import java.util.Set;
102
103import libcore.io.IoUtils;
104
105/** {@hide} */
106public class NotificationManagerService extends SystemService {
107    static final String TAG = "NotificationService";
108    static final boolean DBG = false;
109
110    static final int MAX_PACKAGE_NOTIFICATIONS = 50;
111
112    // message codes
113    static final int MESSAGE_TIMEOUT = 2;
114
115    static final int LONG_DELAY = 3500; // 3.5 seconds
116    static final int SHORT_DELAY = 2000; // 2 seconds
117
118    static final long[] DEFAULT_VIBRATE_PATTERN = {0, 250, 250, 250};
119    static final int VIBRATE_PATTERN_MAXLEN = 8 * 2 + 1; // up to eight bumps
120
121    static final int DEFAULT_STREAM_TYPE = AudioManager.STREAM_NOTIFICATION;
122    static final boolean SCORE_ONGOING_HIGHER = false;
123
124    static final int JUNK_SCORE = -1000;
125    static final int NOTIFICATION_PRIORITY_MULTIPLIER = 10;
126    static final int SCORE_DISPLAY_THRESHOLD = Notification.PRIORITY_MIN * NOTIFICATION_PRIORITY_MULTIPLIER;
127
128    // Notifications with scores below this will not interrupt the user, either via LED or
129    // sound or vibration
130    static final int SCORE_INTERRUPTION_THRESHOLD =
131            Notification.PRIORITY_LOW * NOTIFICATION_PRIORITY_MULTIPLIER;
132
133    static final boolean ENABLE_BLOCKED_NOTIFICATIONS = true;
134    static final boolean ENABLE_BLOCKED_TOASTS = true;
135
136    static final String ENABLED_NOTIFICATION_LISTENERS_SEPARATOR = ":";
137
138    private IActivityManager mAm;
139    AudioManager mAudioManager;
140    StatusBarManagerInternal mStatusBar;
141    Vibrator mVibrator;
142
143    final IBinder mForegroundToken = new Binder();
144    private WorkerHandler mHandler;
145
146    private Light mNotificationLight;
147    Light mAttentionLight;
148    private int mDefaultNotificationColor;
149    private int mDefaultNotificationLedOn;
150
151    private int mDefaultNotificationLedOff;
152    private long[] mDefaultVibrationPattern;
153
154    private long[] mFallbackVibrationPattern;
155    boolean mSystemReady;
156
157    int mDisabledNotifications;
158    NotificationRecord mSoundNotification;
159    NotificationRecord mVibrateNotification;
160
161    // for enabling and disabling notification pulse behavior
162    private boolean mScreenOn = true;
163    private boolean mInCall = false;
164    private boolean mNotificationPulseEnabled;
165
166    // used as a mutex for access to all active notifications & listeners
167    final ArrayList<NotificationRecord> mNotificationList =
168            new ArrayList<NotificationRecord>();
169
170    final ArrayList<ToastRecord> mToastQueue = new ArrayList<ToastRecord>();
171
172    ArrayList<NotificationRecord> mLights = new ArrayList<NotificationRecord>();
173    NotificationRecord mLedNotification;
174
175    private AppOpsManager mAppOps;
176
177    // contains connections to all connected listeners, including app services
178    // and system listeners
179    private ArrayList<NotificationListenerInfo> mListeners
180            = new ArrayList<NotificationListenerInfo>();
181    // things that will be put into mListeners as soon as they're ready
182    private ArrayList<String> mServicesBinding = new ArrayList<String>();
183    // lists the component names of all enabled (and therefore connected) listener
184    // app services for the current user only
185    private HashSet<ComponentName> mEnabledListenersForCurrentUser
186            = new HashSet<ComponentName>();
187    // Just the packages from mEnabledListenersForCurrentUser
188    private HashSet<String> mEnabledListenerPackageNames = new HashSet<String>();
189
190    // Notification control database. For now just contains disabled packages.
191    private AtomicFile mPolicyFile;
192    private HashSet<String> mBlockedPackages = new HashSet<String>();
193
194    private static final int DB_VERSION = 1;
195
196    private static final String TAG_BODY = "notification-policy";
197    private static final String ATTR_VERSION = "version";
198
199    private static final String TAG_BLOCKED_PKGS = "blocked-packages";
200    private static final String TAG_PACKAGE = "package";
201    private static final String ATTR_NAME = "name";
202
203    final ArrayList<NotificationScorer> mScorers = new ArrayList<NotificationScorer>();
204
205    private class NotificationListenerInfo implements IBinder.DeathRecipient {
206        INotificationListener listener;
207        ComponentName component;
208        int userid;
209        boolean isSystem;
210        ServiceConnection connection;
211
212        public NotificationListenerInfo(INotificationListener listener, ComponentName component,
213                int userid, boolean isSystem) {
214            this.listener = listener;
215            this.component = component;
216            this.userid = userid;
217            this.isSystem = isSystem;
218            this.connection = null;
219        }
220
221        public NotificationListenerInfo(INotificationListener listener, ComponentName component,
222                int userid, ServiceConnection connection) {
223            this.listener = listener;
224            this.component = component;
225            this.userid = userid;
226            this.isSystem = false;
227            this.connection = connection;
228        }
229
230        boolean enabledAndUserMatches(StatusBarNotification sbn) {
231            final int nid = sbn.getUserId();
232            if (!isEnabledForCurrentUser()) {
233                return false;
234            }
235            if (this.userid == UserHandle.USER_ALL) return true;
236            return (nid == UserHandle.USER_ALL || nid == this.userid);
237        }
238
239        public void notifyPostedIfUserMatch(StatusBarNotification sbn) {
240            if (!enabledAndUserMatches(sbn)) {
241                return;
242            }
243            try {
244                listener.onNotificationPosted(sbn);
245            } catch (RemoteException ex) {
246                Log.e(TAG, "unable to notify listener (posted): " + listener, ex);
247            }
248        }
249
250        public void notifyRemovedIfUserMatch(StatusBarNotification sbn) {
251            if (!enabledAndUserMatches(sbn)) return;
252            try {
253                listener.onNotificationRemoved(sbn);
254            } catch (RemoteException ex) {
255                Log.e(TAG, "unable to notify listener (removed): " + listener, ex);
256            }
257        }
258
259        @Override
260        public void binderDied() {
261            // Remove the listener, but don't unbind from the service. The system will bring the
262            // service back up, and the onServiceConnected handler will readd the listener with the
263            // new binding. If this isn't a bound service, and is just a registered
264            // INotificationListener, just removing it from the list is all we need to do anyway.
265            removeListenerImpl(this.listener, this.userid);
266        }
267
268        /** convenience method for looking in mEnabledListenersForCurrentUser */
269        public boolean isEnabledForCurrentUser() {
270            if (this.isSystem) return true;
271            if (this.connection == null) return false;
272            return mEnabledListenersForCurrentUser.contains(this.component);
273        }
274    }
275
276    private static class Archive {
277        static final int BUFFER_SIZE = 250;
278        ArrayDeque<StatusBarNotification> mBuffer = new ArrayDeque<StatusBarNotification>(BUFFER_SIZE);
279
280        public Archive() {
281        }
282
283        public String toString() {
284            final StringBuilder sb = new StringBuilder();
285            final int N = mBuffer.size();
286            sb.append("Archive (");
287            sb.append(N);
288            sb.append(" notification");
289            sb.append((N==1)?")":"s)");
290            return sb.toString();
291        }
292
293        public void record(StatusBarNotification nr) {
294            if (mBuffer.size() == BUFFER_SIZE) {
295                mBuffer.removeFirst();
296            }
297
298            // We don't want to store the heavy bits of the notification in the archive,
299            // but other clients in the system process might be using the object, so we
300            // store a (lightened) copy.
301            mBuffer.addLast(nr.cloneLight());
302        }
303
304
305        public void clear() {
306            mBuffer.clear();
307        }
308
309        public Iterator<StatusBarNotification> descendingIterator() {
310            return mBuffer.descendingIterator();
311        }
312        public Iterator<StatusBarNotification> ascendingIterator() {
313            return mBuffer.iterator();
314        }
315        public Iterator<StatusBarNotification> filter(
316                final Iterator<StatusBarNotification> iter, final String pkg, final int userId) {
317            return new Iterator<StatusBarNotification>() {
318                StatusBarNotification mNext = findNext();
319
320                private StatusBarNotification findNext() {
321                    while (iter.hasNext()) {
322                        StatusBarNotification nr = iter.next();
323                        if ((pkg == null || nr.getPackageName() == pkg)
324                                && (userId == UserHandle.USER_ALL || nr.getUserId() == userId)) {
325                            return nr;
326                        }
327                    }
328                    return null;
329                }
330
331                @Override
332                public boolean hasNext() {
333                    return mNext == null;
334                }
335
336                @Override
337                public StatusBarNotification next() {
338                    StatusBarNotification next = mNext;
339                    if (next == null) {
340                        throw new NoSuchElementException();
341                    }
342                    mNext = findNext();
343                    return next;
344                }
345
346                @Override
347                public void remove() {
348                    iter.remove();
349                }
350            };
351        }
352
353        public StatusBarNotification[] getArray(int count) {
354            if (count == 0) count = Archive.BUFFER_SIZE;
355            final StatusBarNotification[] a
356                    = new StatusBarNotification[Math.min(count, mBuffer.size())];
357            Iterator<StatusBarNotification> iter = descendingIterator();
358            int i=0;
359            while (iter.hasNext() && i < count) {
360                a[i++] = iter.next();
361            }
362            return a;
363        }
364
365        public StatusBarNotification[] getArray(int count, String pkg, int userId) {
366            if (count == 0) count = Archive.BUFFER_SIZE;
367            final StatusBarNotification[] a
368                    = new StatusBarNotification[Math.min(count, mBuffer.size())];
369            Iterator<StatusBarNotification> iter = filter(descendingIterator(), pkg, userId);
370            int i=0;
371            while (iter.hasNext() && i < count) {
372                a[i++] = iter.next();
373            }
374            return a;
375        }
376
377    }
378
379    Archive mArchive = new Archive();
380
381    private void loadBlockDb() {
382        synchronized(mBlockedPackages) {
383            if (mPolicyFile == null) {
384                File dir = new File("/data/system");
385                mPolicyFile = new AtomicFile(new File(dir, "notification_policy.xml"));
386
387                mBlockedPackages.clear();
388
389                FileInputStream infile = null;
390                try {
391                    infile = mPolicyFile.openRead();
392                    final XmlPullParser parser = Xml.newPullParser();
393                    parser.setInput(infile, null);
394
395                    int type;
396                    String tag;
397                    int version = DB_VERSION;
398                    while ((type = parser.next()) != END_DOCUMENT) {
399                        tag = parser.getName();
400                        if (type == START_TAG) {
401                            if (TAG_BODY.equals(tag)) {
402                                version = Integer.parseInt(
403                                        parser.getAttributeValue(null, ATTR_VERSION));
404                            } else if (TAG_BLOCKED_PKGS.equals(tag)) {
405                                while ((type = parser.next()) != END_DOCUMENT) {
406                                    tag = parser.getName();
407                                    if (TAG_PACKAGE.equals(tag)) {
408                                        mBlockedPackages.add(
409                                                parser.getAttributeValue(null, ATTR_NAME));
410                                    } else if (TAG_BLOCKED_PKGS.equals(tag) && type == END_TAG) {
411                                        break;
412                                    }
413                                }
414                            }
415                        }
416                    }
417                } catch (FileNotFoundException e) {
418                    // No data yet
419                } catch (IOException e) {
420                    Log.wtf(TAG, "Unable to read blocked notifications database", e);
421                } catch (NumberFormatException e) {
422                    Log.wtf(TAG, "Unable to parse blocked notifications database", e);
423                } catch (XmlPullParserException e) {
424                    Log.wtf(TAG, "Unable to parse blocked notifications database", e);
425                } finally {
426                    IoUtils.closeQuietly(infile);
427                }
428            }
429        }
430    }
431
432    /** Use this when you actually want to post a notification or toast.
433     *
434     * Unchecked. Not exposed via Binder, but can be called in the course of enqueue*().
435     */
436    private boolean noteNotificationOp(String pkg, int uid) {
437        if (mAppOps.noteOpNoThrow(AppOpsManager.OP_POST_NOTIFICATION, uid, pkg)
438                != AppOpsManager.MODE_ALLOWED) {
439            Slog.v(TAG, "notifications are disabled by AppOps for " + pkg);
440            return false;
441        }
442        return true;
443    }
444
445    private static String idDebugString(Context baseContext, String packageName, int id) {
446        Context c = null;
447
448        if (packageName != null) {
449            try {
450                c = baseContext.createPackageContext(packageName, 0);
451            } catch (NameNotFoundException e) {
452                c = baseContext;
453            }
454        } else {
455            c = baseContext;
456        }
457
458        String pkg;
459        String type;
460        String name;
461
462        Resources r = c.getResources();
463        try {
464            return r.getResourceName(id);
465        } catch (Resources.NotFoundException e) {
466            return "<name unknown>";
467        }
468    }
469
470
471    /**
472     * Remove notification access for any services that no longer exist.
473     */
474    void disableNonexistentListeners() {
475        int currentUser = ActivityManager.getCurrentUser();
476        String flatIn = Settings.Secure.getStringForUser(
477                getContext().getContentResolver(),
478                Settings.Secure.ENABLED_NOTIFICATION_LISTENERS,
479                currentUser);
480        if (!TextUtils.isEmpty(flatIn)) {
481            if (DBG) Slog.v(TAG, "flat before: " + flatIn);
482            PackageManager pm = getContext().getPackageManager();
483            List<ResolveInfo> installedServices = pm.queryIntentServicesAsUser(
484                    new Intent(NotificationListenerService.SERVICE_INTERFACE),
485                    PackageManager.GET_SERVICES | PackageManager.GET_META_DATA,
486                    currentUser);
487
488            Set<ComponentName> installed = new HashSet<ComponentName>();
489            for (int i = 0, count = installedServices.size(); i < count; i++) {
490                ResolveInfo resolveInfo = installedServices.get(i);
491                ServiceInfo info = resolveInfo.serviceInfo;
492
493                if (!android.Manifest.permission.BIND_NOTIFICATION_LISTENER_SERVICE.equals(
494                                info.permission)) {
495                    Slog.w(TAG, "Skipping notification listener service "
496                            + info.packageName + "/" + info.name
497                            + ": it does not require the permission "
498                            + android.Manifest.permission.BIND_NOTIFICATION_LISTENER_SERVICE);
499                    continue;
500                }
501                installed.add(new ComponentName(info.packageName, info.name));
502            }
503
504            String flatOut = "";
505            if (!installed.isEmpty()) {
506                String[] enabled = flatIn.split(ENABLED_NOTIFICATION_LISTENERS_SEPARATOR);
507                ArrayList<String> remaining = new ArrayList<String>(enabled.length);
508                for (int i = 0; i < enabled.length; i++) {
509                    ComponentName enabledComponent = ComponentName.unflattenFromString(enabled[i]);
510                    if (installed.contains(enabledComponent)) {
511                        remaining.add(enabled[i]);
512                    }
513                }
514                flatOut = TextUtils.join(ENABLED_NOTIFICATION_LISTENERS_SEPARATOR, remaining);
515            }
516            if (DBG) Slog.v(TAG, "flat after: " + flatOut);
517            if (!flatIn.equals(flatOut)) {
518                Settings.Secure.putStringForUser(getContext().getContentResolver(),
519                        Settings.Secure.ENABLED_NOTIFICATION_LISTENERS,
520                        flatOut, currentUser);
521            }
522        }
523    }
524
525    /**
526     * Called whenever packages change, the user switches, or ENABLED_NOTIFICATION_LISTENERS
527     * is altered. (For example in response to USER_SWITCHED in our broadcast receiver)
528     */
529    void rebindListenerServices() {
530        final int currentUser = ActivityManager.getCurrentUser();
531        String flat = Settings.Secure.getStringForUser(
532                getContext().getContentResolver(),
533                Settings.Secure.ENABLED_NOTIFICATION_LISTENERS,
534                currentUser);
535
536        NotificationListenerInfo[] toRemove = new NotificationListenerInfo[mListeners.size()];
537        final ArrayList<ComponentName> toAdd;
538
539        synchronized (mNotificationList) {
540            // unbind and remove all existing listeners
541            toRemove = mListeners.toArray(toRemove);
542
543            toAdd = new ArrayList<ComponentName>();
544            final HashSet<ComponentName> newEnabled = new HashSet<ComponentName>();
545            final HashSet<String> newPackages = new HashSet<String>();
546
547            // decode the list of components
548            if (flat != null) {
549                String[] components = flat.split(ENABLED_NOTIFICATION_LISTENERS_SEPARATOR);
550                for (int i=0; i<components.length; i++) {
551                    final ComponentName component
552                            = ComponentName.unflattenFromString(components[i]);
553                    if (component != null) {
554                        newEnabled.add(component);
555                        toAdd.add(component);
556                        newPackages.add(component.getPackageName());
557                    }
558                }
559
560                mEnabledListenersForCurrentUser = newEnabled;
561                mEnabledListenerPackageNames = newPackages;
562            }
563        }
564
565        for (NotificationListenerInfo info : toRemove) {
566            final ComponentName component = info.component;
567            final int oldUser = info.userid;
568            Slog.v(TAG, "disabling notification listener for user " + oldUser + ": " + component);
569            unregisterListenerService(component, info.userid);
570        }
571
572        final int N = toAdd.size();
573        for (int i=0; i<N; i++) {
574            final ComponentName component = toAdd.get(i);
575            Slog.v(TAG, "enabling notification listener for user " + currentUser + ": "
576                    + component);
577            registerListenerService(component, currentUser);
578        }
579    }
580
581
582    /**
583     * Version of registerListener that takes the name of a
584     * {@link android.service.notification.NotificationListenerService} to bind to.
585     *
586     * This is the mechanism by which third parties may subscribe to notifications.
587     */
588    private void registerListenerService(final ComponentName name, final int userid) {
589        checkCallerIsSystem();
590
591        if (DBG) Slog.v(TAG, "registerListenerService: " + name + " u=" + userid);
592
593        synchronized (mNotificationList) {
594            final String servicesBindingTag = name.toString() + "/" + userid;
595            if (mServicesBinding.contains(servicesBindingTag)) {
596                // stop registering this thing already! we're working on it
597                return;
598            }
599            mServicesBinding.add(servicesBindingTag);
600
601            final int N = mListeners.size();
602            for (int i=N-1; i>=0; i--) {
603                final NotificationListenerInfo info = mListeners.get(i);
604                if (name.equals(info.component)
605                        && info.userid == userid) {
606                    // cut old connections
607                    if (DBG) Slog.v(TAG, "    disconnecting old listener: " + info.listener);
608                    mListeners.remove(i);
609                    if (info.connection != null) {
610                        getContext().unbindService(info.connection);
611                    }
612                }
613            }
614
615            Intent intent = new Intent(NotificationListenerService.SERVICE_INTERFACE);
616            intent.setComponent(name);
617
618            intent.putExtra(Intent.EXTRA_CLIENT_LABEL,
619                    R.string.notification_listener_binding_label);
620
621            final PendingIntent pendingIntent = PendingIntent.getActivity(
622                    getContext(), 0, new Intent(Settings.ACTION_NOTIFICATION_LISTENER_SETTINGS), 0);
623            intent.putExtra(Intent.EXTRA_CLIENT_INTENT, pendingIntent);
624
625            try {
626                if (DBG) Slog.v(TAG, "binding: " + intent);
627                if (!getContext().bindServiceAsUser(intent,
628                        new ServiceConnection() {
629                            INotificationListener mListener;
630
631                            @Override
632                            public void onServiceConnected(ComponentName name, IBinder service) {
633                                synchronized (mNotificationList) {
634                                    mServicesBinding.remove(servicesBindingTag);
635                                    try {
636                                        mListener = INotificationListener.Stub.asInterface(service);
637                                        NotificationListenerInfo info
638                                                = new NotificationListenerInfo(
639                                                mListener, name, userid, this);
640                                        service.linkToDeath(info, 0);
641                                        mListeners.add(info);
642                                    } catch (RemoteException e) {
643                                        // already dead
644                                    }
645                                }
646                            }
647
648                            @Override
649                            public void onServiceDisconnected(ComponentName name) {
650                                Slog.v(TAG, "notification listener connection lost: " + name);
651                            }
652                        },
653                        Context.BIND_AUTO_CREATE,
654                        new UserHandle(userid)))
655                {
656                    mServicesBinding.remove(servicesBindingTag);
657                    Slog.w(TAG, "Unable to bind listener service: " + intent);
658                    return;
659                }
660            } catch (SecurityException ex) {
661                Slog.e(TAG, "Unable to bind listener service: " + intent, ex);
662                return;
663            }
664        }
665    }
666
667
668    /**
669     * Remove a listener service for the given user by ComponentName
670     */
671    private void unregisterListenerService(ComponentName name, int userid) {
672        checkCallerIsSystem();
673
674        synchronized (mNotificationList) {
675            final int N = mListeners.size();
676            for (int i=N-1; i>=0; i--) {
677                final NotificationListenerInfo info = mListeners.get(i);
678                if (name.equals(info.component)
679                        && info.userid == userid) {
680                    mListeners.remove(i);
681                    if (info.connection != null) {
682                        try {
683                            getContext().unbindService(info.connection);
684                        } catch (IllegalArgumentException ex) {
685                            // something happened to the service: we think we have a connection
686                            // but it's bogus.
687                            Slog.e(TAG, "Listener " + name + " could not be unbound: " + ex);
688                        }
689                    }
690                }
691            }
692        }
693    }
694
695    /**
696     * asynchronously notify all listeners about a new notification
697     */
698    void notifyPostedLocked(NotificationRecord n) {
699        // make a copy in case changes are made to the underlying Notification object
700        final StatusBarNotification sbn = n.sbn.clone();
701        for (final NotificationListenerInfo info : mListeners) {
702            mHandler.post(new Runnable() {
703                @Override
704                public void run() {
705                    info.notifyPostedIfUserMatch(sbn);
706                }});
707        }
708    }
709
710    /**
711     * asynchronously notify all listeners about a removed notification
712     */
713    void notifyRemovedLocked(NotificationRecord n) {
714        // make a copy in case changes are made to the underlying Notification object
715        // NOTE: this copy is lightweight: it doesn't include heavyweight parts of the notification
716        final StatusBarNotification sbn_light = n.sbn.cloneLight();
717
718        for (final NotificationListenerInfo info : mListeners) {
719            mHandler.post(new Runnable() {
720                @Override
721                public void run() {
722                    info.notifyRemovedIfUserMatch(sbn_light);
723                }});
724        }
725    }
726
727    // -- APIs to support listeners clicking/clearing notifications --
728
729    private void checkNullListener(INotificationListener listener) {
730        if (listener == null) {
731            throw new IllegalArgumentException("Listener must not be null");
732        }
733    }
734
735    private NotificationListenerInfo checkListenerToken(INotificationListener listener) {
736        checkNullListener(listener);
737        final IBinder token = listener.asBinder();
738        final int N = mListeners.size();
739        for (int i=0; i<N; i++) {
740            final NotificationListenerInfo info = mListeners.get(i);
741            if (info.listener.asBinder() == token) return info;
742        }
743        throw new SecurityException("Disallowed call from unknown listener: " + listener);
744    }
745
746
747
748    // -- end of listener APIs --
749
750    public static final class NotificationRecord
751    {
752        final StatusBarNotification sbn;
753        IBinder statusBarKey;
754
755        NotificationRecord(StatusBarNotification sbn)
756        {
757            this.sbn = sbn;
758        }
759
760        public Notification getNotification() { return sbn.getNotification(); }
761        public int getFlags() { return sbn.getNotification().flags; }
762        public int getUserId() { return sbn.getUserId(); }
763
764        void dump(PrintWriter pw, String prefix, Context baseContext) {
765            final Notification notification = sbn.getNotification();
766            pw.println(prefix + this);
767            pw.println(prefix + "  uid=" + sbn.getUid() + " userId=" + sbn.getUserId());
768            pw.println(prefix + "  icon=0x" + Integer.toHexString(notification.icon)
769                    + " / " + idDebugString(baseContext, sbn.getPackageName(), notification.icon));
770            pw.println(prefix + "  pri=" + notification.priority + " score=" + sbn.getScore());
771            pw.println(prefix + "  contentIntent=" + notification.contentIntent);
772            pw.println(prefix + "  deleteIntent=" + notification.deleteIntent);
773            pw.println(prefix + "  tickerText=" + notification.tickerText);
774            pw.println(prefix + "  contentView=" + notification.contentView);
775            pw.println(prefix + String.format("  defaults=0x%08x flags=0x%08x",
776                    notification.defaults, notification.flags));
777            pw.println(prefix + "  sound=" + notification.sound);
778            pw.println(prefix + "  vibrate=" + Arrays.toString(notification.vibrate));
779            pw.println(prefix + String.format("  led=0x%08x onMs=%d offMs=%d",
780                    notification.ledARGB, notification.ledOnMS, notification.ledOffMS));
781            if (notification.actions != null && notification.actions.length > 0) {
782                pw.println(prefix + "  actions={");
783                final int N = notification.actions.length;
784                for (int i=0; i<N; i++) {
785                    final Notification.Action action = notification.actions[i];
786                    pw.println(String.format("%s    [%d] \"%s\" -> %s",
787                            prefix,
788                            i,
789                            action.title,
790                            action.actionIntent.toString()
791                            ));
792                }
793                pw.println(prefix + "  }");
794            }
795            if (notification.extras != null && notification.extras.size() > 0) {
796                pw.println(prefix + "  extras={");
797                for (String key : notification.extras.keySet()) {
798                    pw.print(prefix + "    " + key + "=");
799                    Object val = notification.extras.get(key);
800                    if (val == null) {
801                        pw.println("null");
802                    } else {
803                        pw.print(val.toString());
804                        if (val instanceof Bitmap) {
805                            pw.print(String.format(" (%dx%d)",
806                                    ((Bitmap) val).getWidth(),
807                                    ((Bitmap) val).getHeight()));
808                        } else if (val.getClass().isArray()) {
809                            pw.println(" {");
810                            final int N = Array.getLength(val);
811                            for (int i=0; i<N; i++) {
812                                if (i > 0) pw.println(",");
813                                pw.print(prefix + "      " + Array.get(val, i));
814                            }
815                            pw.print("\n" + prefix + "    }");
816                        }
817                        pw.println();
818                    }
819                }
820                pw.println(prefix + "  }");
821            }
822        }
823
824        @Override
825        public final String toString() {
826            return String.format(
827                    "NotificationRecord(0x%08x: pkg=%s user=%s id=%d tag=%s score=%d: %s)",
828                    System.identityHashCode(this),
829                    this.sbn.getPackageName(), this.sbn.getUser(), this.sbn.getId(),
830                    this.sbn.getTag(), this.sbn.getScore(), this.sbn.getNotification());
831        }
832    }
833
834    private static final class ToastRecord
835    {
836        final int pid;
837        final String pkg;
838        final ITransientNotification callback;
839        int duration;
840
841        ToastRecord(int pid, String pkg, ITransientNotification callback, int duration)
842        {
843            this.pid = pid;
844            this.pkg = pkg;
845            this.callback = callback;
846            this.duration = duration;
847        }
848
849        void update(int duration) {
850            this.duration = duration;
851        }
852
853        void dump(PrintWriter pw, String prefix) {
854            pw.println(prefix + this);
855        }
856
857        @Override
858        public final String toString()
859        {
860            return "ToastRecord{"
861                + Integer.toHexString(System.identityHashCode(this))
862                + " pkg=" + pkg
863                + " callback=" + callback
864                + " duration=" + duration;
865        }
866    }
867
868    private final NotificationDelegate mNotificationDelegate = new NotificationDelegate() {
869
870        @Override
871        public void onSetDisabled(int status) {
872            synchronized (mNotificationList) {
873                mDisabledNotifications = status;
874                if ((mDisabledNotifications & StatusBarManager.DISABLE_NOTIFICATION_ALERTS) != 0) {
875                    // cancel whatever's going on
876                    long identity = Binder.clearCallingIdentity();
877                    try {
878                        final IRingtonePlayer player = mAudioManager.getRingtonePlayer();
879                        if (player != null) {
880                            player.stopAsync();
881                        }
882                    } catch (RemoteException e) {
883                    } finally {
884                        Binder.restoreCallingIdentity(identity);
885                    }
886
887                    identity = Binder.clearCallingIdentity();
888                    try {
889                        mVibrator.cancel();
890                    } finally {
891                        Binder.restoreCallingIdentity(identity);
892                    }
893                }
894            }
895        }
896
897        @Override
898        public void onClearAll() {
899            // XXX to be totally correct, the caller should tell us which user
900            // this is for.
901            cancelAll(ActivityManager.getCurrentUser());
902        }
903
904        @Override
905        public void onNotificationClick(String pkg, String tag, int id) {
906            // XXX to be totally correct, the caller should tell us which user
907            // this is for.
908            cancelNotification(pkg, tag, id, Notification.FLAG_AUTO_CANCEL,
909                    Notification.FLAG_FOREGROUND_SERVICE, false,
910                    ActivityManager.getCurrentUser());
911        }
912
913        @Override
914        public void onNotificationClear(String pkg, String tag, int id) {
915            // XXX to be totally correct, the caller should tell us which user
916            // this is for.
917            cancelNotification(pkg, tag, id, 0,
918                Notification.FLAG_ONGOING_EVENT | Notification.FLAG_FOREGROUND_SERVICE,
919                true, ActivityManager.getCurrentUser());
920        }
921
922        @Override
923        public void onPanelRevealed() {
924            synchronized (mNotificationList) {
925                // sound
926                mSoundNotification = null;
927
928                long identity = Binder.clearCallingIdentity();
929                try {
930                    final IRingtonePlayer player = mAudioManager.getRingtonePlayer();
931                    if (player != null) {
932                        player.stopAsync();
933                    }
934                } catch (RemoteException e) {
935                } finally {
936                    Binder.restoreCallingIdentity(identity);
937                }
938
939                // vibrate
940                mVibrateNotification = null;
941                identity = Binder.clearCallingIdentity();
942                try {
943                    mVibrator.cancel();
944                } finally {
945                    Binder.restoreCallingIdentity(identity);
946                }
947
948                // light
949                mLights.clear();
950                mLedNotification = null;
951                updateLightsLocked();
952            }
953        }
954
955        @Override
956        public void onNotificationError(String pkg, String tag, int id,
957                int uid, int initialPid, String message) {
958            Slog.d(TAG, "onNotification error pkg=" + pkg + " tag=" + tag + " id=" + id
959                    + "; will crashApplication(uid=" + uid + ", pid=" + initialPid + ")");
960            // XXX to be totally correct, the caller should tell us which user
961            // this is for.
962            cancelNotification(pkg, tag, id, 0, 0, false, UserHandle.getUserId(uid));
963            long ident = Binder.clearCallingIdentity();
964            try {
965                ActivityManagerNative.getDefault().crashApplication(uid, initialPid, pkg,
966                        "Bad notification posted from package " + pkg
967                        + ": " + message);
968            } catch (RemoteException e) {
969            }
970            Binder.restoreCallingIdentity(ident);
971        }
972    };
973
974    private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
975        @Override
976        public void onReceive(Context context, Intent intent) {
977            String action = intent.getAction();
978
979            boolean queryRestart = false;
980            boolean queryRemove = false;
981            boolean packageChanged = false;
982            boolean cancelNotifications = true;
983
984            if (action.equals(Intent.ACTION_PACKAGE_ADDED)
985                    || (queryRemove=action.equals(Intent.ACTION_PACKAGE_REMOVED))
986                    || action.equals(Intent.ACTION_PACKAGE_RESTARTED)
987                    || (packageChanged=action.equals(Intent.ACTION_PACKAGE_CHANGED))
988                    || (queryRestart=action.equals(Intent.ACTION_QUERY_PACKAGE_RESTART))
989                    || action.equals(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE)) {
990                String pkgList[] = null;
991                boolean queryReplace = queryRemove &&
992                        intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
993                if (DBG) Slog.i(TAG, "queryReplace=" + queryReplace);
994                if (action.equals(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE)) {
995                    pkgList = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
996                } else if (queryRestart) {
997                    pkgList = intent.getStringArrayExtra(Intent.EXTRA_PACKAGES);
998                } else {
999                    Uri uri = intent.getData();
1000                    if (uri == null) {
1001                        return;
1002                    }
1003                    String pkgName = uri.getSchemeSpecificPart();
1004                    if (pkgName == null) {
1005                        return;
1006                    }
1007                    if (packageChanged) {
1008                        // We cancel notifications for packages which have just been disabled
1009                        try {
1010                            final int enabled = getContext().getPackageManager()
1011                                    .getApplicationEnabledSetting(pkgName);
1012                            if (enabled == PackageManager.COMPONENT_ENABLED_STATE_ENABLED
1013                                    || enabled == PackageManager.COMPONENT_ENABLED_STATE_DEFAULT) {
1014                                cancelNotifications = false;
1015                            }
1016                        } catch (IllegalArgumentException e) {
1017                            // Package doesn't exist; probably racing with uninstall.
1018                            // cancelNotifications is already true, so nothing to do here.
1019                            if (DBG) {
1020                                Slog.i(TAG, "Exception trying to look up app enabled setting", e);
1021                            }
1022                        }
1023                    }
1024                    pkgList = new String[]{pkgName};
1025                }
1026
1027                boolean anyListenersInvolved = false;
1028                if (pkgList != null && (pkgList.length > 0)) {
1029                    for (String pkgName : pkgList) {
1030                        if (cancelNotifications) {
1031                            cancelAllNotificationsInt(pkgName, 0, 0, !queryRestart,
1032                                    UserHandle.USER_ALL);
1033                        }
1034                        if (mEnabledListenerPackageNames.contains(pkgName)) {
1035                            anyListenersInvolved = true;
1036                        }
1037                    }
1038                }
1039
1040                if (anyListenersInvolved) {
1041                    // if we're not replacing a package, clean up orphaned bits
1042                    if (!queryReplace) {
1043                        disableNonexistentListeners();
1044                    }
1045                    // make sure we're still bound to any of our
1046                    // listeners who may have just upgraded
1047                    rebindListenerServices();
1048                }
1049            } else if (action.equals(Intent.ACTION_SCREEN_ON)) {
1050                // Keep track of screen on/off state, but do not turn off the notification light
1051                // until user passes through the lock screen or views the notification.
1052                mScreenOn = true;
1053            } else if (action.equals(Intent.ACTION_SCREEN_OFF)) {
1054                mScreenOn = false;
1055            } else if (action.equals(TelephonyManager.ACTION_PHONE_STATE_CHANGED)) {
1056                mInCall = (intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(
1057                        TelephonyManager.EXTRA_STATE_OFFHOOK));
1058                updateNotificationPulse();
1059            } else if (action.equals(Intent.ACTION_USER_STOPPED)) {
1060                int userHandle = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1);
1061                if (userHandle >= 0) {
1062                    cancelAllNotificationsInt(null, 0, 0, true, userHandle);
1063                }
1064            } else if (action.equals(Intent.ACTION_USER_PRESENT)) {
1065                // turn off LED when user passes through lock screen
1066                mNotificationLight.turnOff();
1067            } else if (action.equals(Intent.ACTION_USER_SWITCHED)) {
1068                // reload per-user settings
1069                mSettingsObserver.update(null);
1070            }
1071        }
1072    };
1073
1074    class SettingsObserver extends ContentObserver {
1075        private final Uri NOTIFICATION_LIGHT_PULSE_URI
1076                = Settings.System.getUriFor(Settings.System.NOTIFICATION_LIGHT_PULSE);
1077
1078        private final Uri ENABLED_NOTIFICATION_LISTENERS_URI
1079                = Settings.Secure.getUriFor(Settings.Secure.ENABLED_NOTIFICATION_LISTENERS);
1080
1081        SettingsObserver(Handler handler) {
1082            super(handler);
1083        }
1084
1085        void observe() {
1086            ContentResolver resolver = getContext().getContentResolver();
1087            resolver.registerContentObserver(NOTIFICATION_LIGHT_PULSE_URI,
1088                    false, this, UserHandle.USER_ALL);
1089            resolver.registerContentObserver(ENABLED_NOTIFICATION_LISTENERS_URI,
1090                    false, this, UserHandle.USER_ALL);
1091            update(null);
1092        }
1093
1094        @Override public void onChange(boolean selfChange, Uri uri) {
1095            update(uri);
1096        }
1097
1098        public void update(Uri uri) {
1099            ContentResolver resolver = getContext().getContentResolver();
1100            if (uri == null || NOTIFICATION_LIGHT_PULSE_URI.equals(uri)) {
1101                boolean pulseEnabled = Settings.System.getInt(resolver,
1102                            Settings.System.NOTIFICATION_LIGHT_PULSE, 0) != 0;
1103                if (mNotificationPulseEnabled != pulseEnabled) {
1104                    mNotificationPulseEnabled = pulseEnabled;
1105                    updateNotificationPulse();
1106                }
1107            }
1108            if (uri == null || ENABLED_NOTIFICATION_LISTENERS_URI.equals(uri)) {
1109                rebindListenerServices();
1110            }
1111        }
1112    }
1113
1114    private SettingsObserver mSettingsObserver;
1115
1116    static long[] getLongArray(Resources r, int resid, int maxlen, long[] def) {
1117        int[] ar = r.getIntArray(resid);
1118        if (ar == null) {
1119            return def;
1120        }
1121        final int len = ar.length > maxlen ? maxlen : ar.length;
1122        long[] out = new long[len];
1123        for (int i=0; i<len; i++) {
1124            out[i] = ar[i];
1125        }
1126        return out;
1127    }
1128
1129    public NotificationManagerService(Context context) {
1130        super(context);
1131    }
1132
1133    @Override
1134    public void onStart() {
1135        mAm = ActivityManagerNative.getDefault();
1136        mAppOps = (AppOpsManager) getContext().getSystemService(Context.APP_OPS_SERVICE);
1137        mVibrator = (Vibrator) getContext().getSystemService(Context.VIBRATOR_SERVICE);
1138
1139        mHandler = new WorkerHandler();
1140
1141        importOldBlockDb();
1142
1143        mStatusBar = getLocalService(StatusBarManagerInternal.class);
1144        mStatusBar.setNotificationDelegate(mNotificationDelegate);
1145
1146        final LightsManager lights = getLocalService(LightsManager.class);
1147        mNotificationLight = lights.getLight(LightsManager.LIGHT_ID_NOTIFICATIONS);
1148        mAttentionLight = lights.getLight(LightsManager.LIGHT_ID_ATTENTION);
1149
1150        Resources resources = getContext().getResources();
1151        mDefaultNotificationColor = resources.getColor(
1152                R.color.config_defaultNotificationColor);
1153        mDefaultNotificationLedOn = resources.getInteger(
1154                R.integer.config_defaultNotificationLedOn);
1155        mDefaultNotificationLedOff = resources.getInteger(
1156                R.integer.config_defaultNotificationLedOff);
1157
1158        mDefaultVibrationPattern = getLongArray(resources,
1159                R.array.config_defaultNotificationVibePattern,
1160                VIBRATE_PATTERN_MAXLEN,
1161                DEFAULT_VIBRATE_PATTERN);
1162
1163        mFallbackVibrationPattern = getLongArray(resources,
1164                R.array.config_notificationFallbackVibePattern,
1165                VIBRATE_PATTERN_MAXLEN,
1166                DEFAULT_VIBRATE_PATTERN);
1167
1168        // Don't start allowing notifications until the setup wizard has run once.
1169        // After that, including subsequent boots, init with notifications turned on.
1170        // This works on the first boot because the setup wizard will toggle this
1171        // flag at least once and we'll go back to 0 after that.
1172        if (0 == Settings.Global.getInt(getContext().getContentResolver(),
1173                    Settings.Global.DEVICE_PROVISIONED, 0)) {
1174            mDisabledNotifications = StatusBarManager.DISABLE_NOTIFICATION_ALERTS;
1175        }
1176
1177        // register for various Intents
1178        IntentFilter filter = new IntentFilter();
1179        filter.addAction(Intent.ACTION_SCREEN_ON);
1180        filter.addAction(Intent.ACTION_SCREEN_OFF);
1181        filter.addAction(TelephonyManager.ACTION_PHONE_STATE_CHANGED);
1182        filter.addAction(Intent.ACTION_USER_PRESENT);
1183        filter.addAction(Intent.ACTION_USER_STOPPED);
1184        filter.addAction(Intent.ACTION_USER_SWITCHED);
1185        getContext().registerReceiver(mIntentReceiver, filter);
1186        IntentFilter pkgFilter = new IntentFilter();
1187        pkgFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
1188        pkgFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);
1189        pkgFilter.addAction(Intent.ACTION_PACKAGE_CHANGED);
1190        pkgFilter.addAction(Intent.ACTION_PACKAGE_RESTARTED);
1191        pkgFilter.addAction(Intent.ACTION_QUERY_PACKAGE_RESTART);
1192        pkgFilter.addDataScheme("package");
1193        getContext().registerReceiver(mIntentReceiver, pkgFilter);
1194        IntentFilter sdFilter = new IntentFilter(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
1195        getContext().registerReceiver(mIntentReceiver, sdFilter);
1196
1197        mSettingsObserver = new SettingsObserver(mHandler);
1198        mSettingsObserver.observe();
1199
1200        // spin up NotificationScorers
1201        String[] notificationScorerNames = resources.getStringArray(
1202                R.array.config_notificationScorers);
1203        for (String scorerName : notificationScorerNames) {
1204            try {
1205                Class<?> scorerClass = getContext().getClassLoader().loadClass(scorerName);
1206                NotificationScorer scorer = (NotificationScorer) scorerClass.newInstance();
1207                scorer.initialize(getContext());
1208                mScorers.add(scorer);
1209            } catch (ClassNotFoundException e) {
1210                Slog.w(TAG, "Couldn't find scorer " + scorerName + ".", e);
1211            } catch (InstantiationException e) {
1212                Slog.w(TAG, "Couldn't instantiate scorer " + scorerName + ".", e);
1213            } catch (IllegalAccessException e) {
1214                Slog.w(TAG, "Problem accessing scorer " + scorerName + ".", e);
1215            }
1216        }
1217
1218        publishBinderService(Context.NOTIFICATION_SERVICE, mService);
1219        publishLocalService(NotificationManagerInternal.class, mInternalService);
1220    }
1221
1222    /**
1223     * Read the old XML-based app block database and import those blockages into the AppOps system.
1224     */
1225    private void importOldBlockDb() {
1226        loadBlockDb();
1227
1228        PackageManager pm = getContext().getPackageManager();
1229        for (String pkg : mBlockedPackages) {
1230            PackageInfo info = null;
1231            try {
1232                info = pm.getPackageInfo(pkg, 0);
1233                setNotificationsEnabledForPackageImpl(pkg, info.applicationInfo.uid, false);
1234            } catch (NameNotFoundException e) {
1235                // forget you
1236            }
1237        }
1238        mBlockedPackages.clear();
1239        if (mPolicyFile != null) {
1240            mPolicyFile.delete();
1241        }
1242    }
1243
1244    @Override
1245    public void onBootPhase(int phase) {
1246        if (phase == SystemService.PHASE_SYSTEM_SERVICES_READY) {
1247            // no beeping until we're basically done booting
1248            mSystemReady = true;
1249
1250            // Grab our optional AudioService
1251            mAudioManager = (AudioManager) getContext().getSystemService(Context.AUDIO_SERVICE);
1252
1253            // make sure our listener services are properly bound
1254            rebindListenerServices();
1255        }
1256    }
1257
1258    void setNotificationsEnabledForPackageImpl(String pkg, int uid, boolean enabled) {
1259        Slog.v(TAG, (enabled?"en":"dis") + "abling notifications for " + pkg);
1260
1261        mAppOps.setMode(AppOpsManager.OP_POST_NOTIFICATION, uid, pkg,
1262                enabled ? AppOpsManager.MODE_ALLOWED : AppOpsManager.MODE_IGNORED);
1263
1264        // Now, cancel any outstanding notifications that are part of a just-disabled app
1265        if (ENABLE_BLOCKED_NOTIFICATIONS && !enabled) {
1266            cancelAllNotificationsInt(pkg, 0, 0, true, UserHandle.getUserId(uid));
1267        }
1268    }
1269
1270    private final IBinder mService = new INotificationManager.Stub() {
1271        // Toasts
1272        // ============================================================================
1273
1274        @Override
1275        public void enqueueToast(String pkg, ITransientNotification callback, int duration)
1276        {
1277            if (DBG) {
1278                Slog.i(TAG, "enqueueToast pkg=" + pkg + " callback=" + callback
1279                        + " duration=" + duration);
1280            }
1281
1282            if (pkg == null || callback == null) {
1283                Slog.e(TAG, "Not doing toast. pkg=" + pkg + " callback=" + callback);
1284                return ;
1285            }
1286
1287            final boolean isSystemToast = isCallerSystem() || ("android".equals(pkg));
1288
1289            if (ENABLE_BLOCKED_TOASTS && !noteNotificationOp(pkg, Binder.getCallingUid())) {
1290                if (!isSystemToast) {
1291                    Slog.e(TAG, "Suppressing toast from package " + pkg + " by user request.");
1292                    return;
1293                }
1294            }
1295
1296            synchronized (mToastQueue) {
1297                int callingPid = Binder.getCallingPid();
1298                long callingId = Binder.clearCallingIdentity();
1299                try {
1300                    ToastRecord record;
1301                    int index = indexOfToastLocked(pkg, callback);
1302                    // If it's already in the queue, we update it in place, we don't
1303                    // move it to the end of the queue.
1304                    if (index >= 0) {
1305                        record = mToastQueue.get(index);
1306                        record.update(duration);
1307                    } else {
1308                        // Limit the number of toasts that any given package except the android
1309                        // package can enqueue.  Prevents DOS attacks and deals with leaks.
1310                        if (!isSystemToast) {
1311                            int count = 0;
1312                            final int N = mToastQueue.size();
1313                            for (int i=0; i<N; i++) {
1314                                 final ToastRecord r = mToastQueue.get(i);
1315                                 if (r.pkg.equals(pkg)) {
1316                                     count++;
1317                                     if (count >= MAX_PACKAGE_NOTIFICATIONS) {
1318                                         Slog.e(TAG, "Package has already posted " + count
1319                                                + " toasts. Not showing more. Package=" + pkg);
1320                                         return;
1321                                     }
1322                                 }
1323                            }
1324                        }
1325
1326                        record = new ToastRecord(callingPid, pkg, callback, duration);
1327                        mToastQueue.add(record);
1328                        index = mToastQueue.size() - 1;
1329                        keepProcessAliveLocked(callingPid);
1330                    }
1331                    // If it's at index 0, it's the current toast.  It doesn't matter if it's
1332                    // new or just been updated.  Call back and tell it to show itself.
1333                    // If the callback fails, this will remove it from the list, so don't
1334                    // assume that it's valid after this.
1335                    if (index == 0) {
1336                        showNextToastLocked();
1337                    }
1338                } finally {
1339                    Binder.restoreCallingIdentity(callingId);
1340                }
1341            }
1342        }
1343
1344        @Override
1345        public void cancelToast(String pkg, ITransientNotification callback) {
1346            Slog.i(TAG, "cancelToast pkg=" + pkg + " callback=" + callback);
1347
1348            if (pkg == null || callback == null) {
1349                Slog.e(TAG, "Not cancelling notification. pkg=" + pkg + " callback=" + callback);
1350                return ;
1351            }
1352
1353            synchronized (mToastQueue) {
1354                long callingId = Binder.clearCallingIdentity();
1355                try {
1356                    int index = indexOfToastLocked(pkg, callback);
1357                    if (index >= 0) {
1358                        cancelToastLocked(index);
1359                    } else {
1360                        Slog.w(TAG, "Toast already cancelled. pkg=" + pkg
1361                                + " callback=" + callback);
1362                    }
1363                } finally {
1364                    Binder.restoreCallingIdentity(callingId);
1365                }
1366            }
1367        }
1368
1369        @Override
1370        public void enqueueNotificationWithTag(String pkg, String basePkg, String tag, int id,
1371                Notification notification, int[] idOut, int userId) throws RemoteException {
1372            enqueueNotificationInternal(pkg, basePkg, Binder.getCallingUid(),
1373                    Binder.getCallingPid(), tag, id, notification, idOut, userId);
1374        }
1375
1376        @Override
1377        public void cancelNotificationWithTag(String pkg, String tag, int id, int userId) {
1378            checkCallerIsSystemOrSameApp(pkg);
1379            userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(),
1380                    Binder.getCallingUid(), userId, true, false, "cancelNotificationWithTag", pkg);
1381            // Don't allow client applications to cancel foreground service notis.
1382            cancelNotification(pkg, tag, id, 0,
1383                    Binder.getCallingUid() == Process.SYSTEM_UID
1384                    ? 0 : Notification.FLAG_FOREGROUND_SERVICE, false, userId);
1385        }
1386
1387        @Override
1388        public void cancelAllNotifications(String pkg, int userId) {
1389            checkCallerIsSystemOrSameApp(pkg);
1390
1391            userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(),
1392                    Binder.getCallingUid(), userId, true, false, "cancelAllNotifications", pkg);
1393
1394            // Calling from user space, don't allow the canceling of actively
1395            // running foreground services.
1396            cancelAllNotificationsInt(pkg, 0, Notification.FLAG_FOREGROUND_SERVICE, true, userId);
1397        }
1398
1399        @Override
1400        public void setNotificationsEnabledForPackage(String pkg, int uid, boolean enabled) {
1401            checkCallerIsSystem();
1402
1403            setNotificationsEnabledForPackageImpl(pkg, uid, enabled);
1404        }
1405
1406        /**
1407         * Use this when you just want to know if notifications are OK for this package.
1408         */
1409        @Override
1410        public boolean areNotificationsEnabledForPackage(String pkg, int uid) {
1411            checkCallerIsSystem();
1412            return (mAppOps.checkOpNoThrow(AppOpsManager.OP_POST_NOTIFICATION, uid, pkg)
1413                    == AppOpsManager.MODE_ALLOWED);
1414        }
1415
1416        /**
1417         * System-only API for getting a list of current (i.e. not cleared) notifications.
1418         *
1419         * Requires ACCESS_NOTIFICATIONS which is signature|system.
1420         */
1421        @Override
1422        public StatusBarNotification[] getActiveNotifications(String callingPkg) {
1423            // enforce() will ensure the calling uid has the correct permission
1424            getContext().enforceCallingOrSelfPermission(
1425                    android.Manifest.permission.ACCESS_NOTIFICATIONS,
1426                    "NotificationManagerService.getActiveNotifications");
1427
1428            StatusBarNotification[] tmp = null;
1429            int uid = Binder.getCallingUid();
1430
1431            // noteOp will check to make sure the callingPkg matches the uid
1432            if (mAppOps.noteOpNoThrow(AppOpsManager.OP_ACCESS_NOTIFICATIONS, uid, callingPkg)
1433                    == AppOpsManager.MODE_ALLOWED) {
1434                synchronized (mNotificationList) {
1435                    tmp = new StatusBarNotification[mNotificationList.size()];
1436                    final int N = mNotificationList.size();
1437                    for (int i=0; i<N; i++) {
1438                        tmp[i] = mNotificationList.get(i).sbn;
1439                    }
1440                }
1441            }
1442            return tmp;
1443        }
1444
1445        /**
1446         * System-only API for getting a list of recent (cleared, no longer shown) notifications.
1447         *
1448         * Requires ACCESS_NOTIFICATIONS which is signature|system.
1449         */
1450        @Override
1451        public StatusBarNotification[] getHistoricalNotifications(String callingPkg, int count) {
1452            // enforce() will ensure the calling uid has the correct permission
1453            getContext().enforceCallingOrSelfPermission(
1454                    android.Manifest.permission.ACCESS_NOTIFICATIONS,
1455                    "NotificationManagerService.getHistoricalNotifications");
1456
1457            StatusBarNotification[] tmp = null;
1458            int uid = Binder.getCallingUid();
1459
1460            // noteOp will check to make sure the callingPkg matches the uid
1461            if (mAppOps.noteOpNoThrow(AppOpsManager.OP_ACCESS_NOTIFICATIONS, uid, callingPkg)
1462                    == AppOpsManager.MODE_ALLOWED) {
1463                synchronized (mArchive) {
1464                    tmp = mArchive.getArray(count);
1465                }
1466            }
1467            return tmp;
1468        }
1469
1470        /**
1471         * Register a listener binder directly with the notification manager.
1472         *
1473         * Only works with system callers. Apps should extend
1474         * {@link android.service.notification.NotificationListenerService}.
1475         */
1476        @Override
1477        public void registerListener(final INotificationListener listener,
1478                final ComponentName component, final int userid) {
1479            checkCallerIsSystem();
1480            checkNullListener(listener);
1481            registerListenerImpl(listener, component, userid);
1482        }
1483
1484        /**
1485         * Remove a listener binder directly
1486         */
1487        @Override
1488        public void unregisterListener(INotificationListener listener, int userid) {
1489            checkNullListener(listener);
1490            // no need to check permissions; if your listener binder is in the list,
1491            // that's proof that you had permission to add it in the first place
1492            unregisterListenerImpl(listener, userid);
1493        }
1494
1495        /**
1496         * Allow an INotificationListener to simulate a "clear all" operation.
1497         *
1498         * {@see com.android.server.StatusBarManagerService.NotificationCallbacks#onClearAllNotifications}
1499         *
1500         * @param token The binder for the listener, to check that the caller is allowed
1501         */
1502        @Override
1503        public void cancelAllNotificationsFromListener(INotificationListener token) {
1504            NotificationListenerInfo info = checkListenerToken(token);
1505            long identity = Binder.clearCallingIdentity();
1506            try {
1507                cancelAll(info.userid);
1508            } finally {
1509                Binder.restoreCallingIdentity(identity);
1510            }
1511        }
1512
1513        /**
1514         * Allow an INotificationListener to simulate clearing (dismissing) a single notification.
1515         *
1516         * {@see com.android.server.StatusBarManagerService.NotificationCallbacks#onNotificationClear}
1517         *
1518         * @param token The binder for the listener, to check that the caller is allowed
1519         */
1520        @Override
1521        public void cancelNotificationFromListener(INotificationListener token, String pkg,
1522                String tag, int id) {
1523            NotificationListenerInfo info = checkListenerToken(token);
1524            long identity = Binder.clearCallingIdentity();
1525            try {
1526                cancelNotification(pkg, tag, id, 0,
1527                        Notification.FLAG_ONGOING_EVENT | Notification.FLAG_FOREGROUND_SERVICE,
1528                        true,
1529                        info.userid);
1530            } finally {
1531                Binder.restoreCallingIdentity(identity);
1532            }
1533        }
1534
1535        /**
1536         * Allow an INotificationListener to request the list of outstanding notifications seen by
1537         * the current user. Useful when starting up, after which point the listener callbacks
1538         * should be used.
1539         *
1540         * @param token The binder for the listener, to check that the caller is allowed
1541         */
1542        @Override
1543        public StatusBarNotification[] getActiveNotificationsFromListener(
1544                INotificationListener token) {
1545            NotificationListenerInfo info = checkListenerToken(token);
1546
1547            StatusBarNotification[] result = new StatusBarNotification[0];
1548            ArrayList<StatusBarNotification> list = new ArrayList<StatusBarNotification>();
1549            synchronized (mNotificationList) {
1550                final int N = mNotificationList.size();
1551                for (int i=0; i<N; i++) {
1552                    StatusBarNotification sbn = mNotificationList.get(i).sbn;
1553                    if (info.enabledAndUserMatches(sbn)) {
1554                        list.add(sbn);
1555                    }
1556                }
1557            }
1558            return list.toArray(result);
1559        }
1560
1561        @Override
1562        protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
1563            if (getContext().checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
1564                    != PackageManager.PERMISSION_GRANTED) {
1565                pw.println("Permission Denial: can't dump NotificationManager from from pid="
1566                        + Binder.getCallingPid()
1567                        + ", uid=" + Binder.getCallingUid());
1568                return;
1569            }
1570
1571            dumpImpl(pw);
1572        }
1573    };
1574
1575    void dumpImpl(PrintWriter pw) {
1576        pw.println("Current Notification Manager state:");
1577
1578        pw.println("  Listeners (" + mEnabledListenersForCurrentUser.size()
1579                + ") enabled for current user:");
1580        for (ComponentName cmpt : mEnabledListenersForCurrentUser) {
1581            pw.println("    " + cmpt);
1582        }
1583
1584        pw.println("  Live listeners (" + mListeners.size() + "):");
1585        for (NotificationListenerInfo info : mListeners) {
1586            pw.println("    " + info.component
1587                    + " (user " + info.userid + "): " + info.listener
1588                    + (info.isSystem?" SYSTEM":""));
1589        }
1590
1591        int N;
1592
1593        synchronized (mToastQueue) {
1594            N = mToastQueue.size();
1595            if (N > 0) {
1596                pw.println("  Toast Queue:");
1597                for (int i=0; i<N; i++) {
1598                    mToastQueue.get(i).dump(pw, "    ");
1599                }
1600                pw.println("  ");
1601            }
1602
1603        }
1604
1605        synchronized (mNotificationList) {
1606            N = mNotificationList.size();
1607            if (N > 0) {
1608                pw.println("  Notification List:");
1609                for (int i=0; i<N; i++) {
1610                    mNotificationList.get(i).dump(pw, "    ", getContext());
1611                }
1612                pw.println("  ");
1613            }
1614
1615            N = mLights.size();
1616            if (N > 0) {
1617                pw.println("  Lights List:");
1618                for (int i=0; i<N; i++) {
1619                    pw.println("    " + mLights.get(i));
1620                }
1621                pw.println("  ");
1622            }
1623
1624            pw.println("  mSoundNotification=" + mSoundNotification);
1625            pw.println("  mVibrateNotification=" + mVibrateNotification);
1626            pw.println("  mDisabledNotifications=0x"
1627                    + Integer.toHexString(mDisabledNotifications));
1628            pw.println("  mSystemReady=" + mSystemReady);
1629            pw.println("  mArchive=" + mArchive.toString());
1630            Iterator<StatusBarNotification> iter = mArchive.descendingIterator();
1631            int i=0;
1632            while (iter.hasNext()) {
1633                pw.println("    " + iter.next());
1634                if (++i >= 5) {
1635                    if (iter.hasNext()) pw.println("    ...");
1636                    break;
1637                }
1638            }
1639
1640        }
1641    }
1642
1643    /**
1644     * The private API only accessible to the system process.
1645     */
1646    private final NotificationManagerInternal mInternalService = new NotificationManagerInternal() {
1647        @Override
1648        public void enqueueNotification(String pkg, String basePkg, int callingUid, int callingPid,
1649                String tag, int id, Notification notification, int[] idReceived, int userId) {
1650            enqueueNotificationInternal(pkg, basePkg, callingUid, callingPid, tag, id, notification,
1651                    idReceived, userId);
1652        }
1653    };
1654
1655    void enqueueNotificationInternal(final String pkg, String basePkg, final int callingUid,
1656            final int callingPid, final String tag, final int id, final Notification notification,
1657            int[] idOut, int incomingUserId) {
1658        if (DBG) {
1659            Slog.v(TAG, "enqueueNotificationInternal: pkg=" + pkg + " id=" + id
1660                    + " notification=" + notification);
1661        }
1662        checkCallerIsSystemOrSameApp(pkg);
1663        final boolean isSystemNotification = isUidSystem(callingUid) || ("android".equals(pkg));
1664
1665        final int userId = ActivityManager.handleIncomingUser(callingPid,
1666                callingUid, incomingUserId, true, false, "enqueueNotification", pkg);
1667        final UserHandle user = new UserHandle(userId);
1668
1669        // Limit the number of notifications that any given package except the android
1670        // package can enqueue.  Prevents DOS attacks and deals with leaks.
1671        if (!isSystemNotification) {
1672            synchronized (mNotificationList) {
1673                int count = 0;
1674                final int N = mNotificationList.size();
1675                for (int i=0; i<N; i++) {
1676                    final NotificationRecord r = mNotificationList.get(i);
1677                    if (r.sbn.getPackageName().equals(pkg) && r.sbn.getUserId() == userId) {
1678                        count++;
1679                        if (count >= MAX_PACKAGE_NOTIFICATIONS) {
1680                            Slog.e(TAG, "Package has already posted " + count
1681                                    + " notifications.  Not showing more.  package=" + pkg);
1682                            return;
1683                        }
1684                    }
1685                }
1686            }
1687        }
1688
1689        // This conditional is a dirty hack to limit the logging done on
1690        //     behalf of the download manager without affecting other apps.
1691        if (!pkg.equals("com.android.providers.downloads")
1692                || Log.isLoggable("DownloadManager", Log.VERBOSE)) {
1693            EventLog.writeEvent(EventLogTags.NOTIFICATION_ENQUEUE, pkg, id, tag, userId,
1694                    notification.toString());
1695        }
1696
1697        if (pkg == null || notification == null) {
1698            throw new IllegalArgumentException("null not allowed: pkg=" + pkg
1699                    + " id=" + id + " notification=" + notification);
1700        }
1701        if (notification.icon != 0) {
1702            if (notification.contentView == null) {
1703                throw new IllegalArgumentException("contentView required: pkg=" + pkg
1704                        + " id=" + id + " notification=" + notification);
1705            }
1706        }
1707
1708        mHandler.post(new Runnable() {
1709            @Override
1710            public void run() {
1711
1712                // === Scoring ===
1713
1714                // 0. Sanitize inputs
1715                notification.priority = clamp(notification.priority, Notification.PRIORITY_MIN,
1716                        Notification.PRIORITY_MAX);
1717                // Migrate notification flags to scores
1718                if (0 != (notification.flags & Notification.FLAG_HIGH_PRIORITY)) {
1719                    if (notification.priority < Notification.PRIORITY_MAX) {
1720                        notification.priority = Notification.PRIORITY_MAX;
1721                    }
1722                } else if (SCORE_ONGOING_HIGHER &&
1723                        0 != (notification.flags & Notification.FLAG_ONGOING_EVENT)) {
1724                    if (notification.priority < Notification.PRIORITY_HIGH) {
1725                        notification.priority = Notification.PRIORITY_HIGH;
1726                    }
1727                }
1728
1729                // 1. initial score: buckets of 10, around the app
1730                int score = notification.priority * NOTIFICATION_PRIORITY_MULTIPLIER; //[-20..20]
1731
1732                // 2. Consult external heuristics (TBD)
1733
1734                // 3. Apply local rules
1735
1736                int initialScore = score;
1737                if (!mScorers.isEmpty()) {
1738                    if (DBG) Slog.v(TAG, "Initial score is " + score + ".");
1739                    for (NotificationScorer scorer : mScorers) {
1740                        try {
1741                            score = scorer.getScore(notification, score);
1742                        } catch (Throwable t) {
1743                            Slog.w(TAG, "Scorer threw on .getScore.", t);
1744                        }
1745                    }
1746                    if (DBG) Slog.v(TAG, "Final score is " + score + ".");
1747                }
1748
1749                // add extra to indicate score modified by NotificationScorer
1750                notification.extras.putBoolean(Notification.EXTRA_SCORE_MODIFIED,
1751                        score != initialScore);
1752
1753                // blocked apps
1754                if (ENABLE_BLOCKED_NOTIFICATIONS && !noteNotificationOp(pkg, callingUid)) {
1755                    if (!isSystemNotification) {
1756                        score = JUNK_SCORE;
1757                        Slog.e(TAG, "Suppressing notification from package " + pkg
1758                                + " by user request.");
1759                    }
1760                }
1761
1762                if (DBG) {
1763                    Slog.v(TAG, "Assigned score=" + score + " to " + notification);
1764                }
1765
1766                if (score < SCORE_DISPLAY_THRESHOLD) {
1767                    // Notification will be blocked because the score is too low.
1768                    return;
1769                }
1770
1771                // Should this notification make noise, vibe, or use the LED?
1772                final boolean canInterrupt = (score >= SCORE_INTERRUPTION_THRESHOLD);
1773
1774                synchronized (mNotificationList) {
1775                    final StatusBarNotification n = new StatusBarNotification(
1776                            pkg, id, tag, callingUid, callingPid, score, notification, user);
1777                    NotificationRecord r = new NotificationRecord(n);
1778                    NotificationRecord old = null;
1779
1780                    int index = indexOfNotificationLocked(pkg, tag, id, userId);
1781                    if (index < 0) {
1782                        mNotificationList.add(r);
1783                    } else {
1784                        old = mNotificationList.remove(index);
1785                        mNotificationList.add(index, r);
1786                        // Make sure we don't lose the foreground service state.
1787                        if (old != null) {
1788                            notification.flags |=
1789                                old.getNotification().flags & Notification.FLAG_FOREGROUND_SERVICE;
1790                        }
1791                    }
1792
1793                    // Ensure if this is a foreground service that the proper additional
1794                    // flags are set.
1795                    if ((notification.flags&Notification.FLAG_FOREGROUND_SERVICE) != 0) {
1796                        notification.flags |= Notification.FLAG_ONGOING_EVENT
1797                                | Notification.FLAG_NO_CLEAR;
1798                    }
1799
1800                    final int currentUser;
1801                    final long token = Binder.clearCallingIdentity();
1802                    try {
1803                        currentUser = ActivityManager.getCurrentUser();
1804                    } finally {
1805                        Binder.restoreCallingIdentity(token);
1806                    }
1807
1808                    if (notification.icon != 0) {
1809                        if (old != null && old.statusBarKey != null) {
1810                            r.statusBarKey = old.statusBarKey;
1811                            final long identity = Binder.clearCallingIdentity();
1812                            try {
1813                                mStatusBar.updateNotification(r.statusBarKey, n);
1814                            } finally {
1815                                Binder.restoreCallingIdentity(identity);
1816                            }
1817                        } else {
1818                            final long identity = Binder.clearCallingIdentity();
1819                            try {
1820                                r.statusBarKey = mStatusBar.addNotification(n);
1821                                if ((n.getNotification().flags & Notification.FLAG_SHOW_LIGHTS) != 0
1822                                        && canInterrupt) {
1823                                    mAttentionLight.pulse();
1824                                }
1825                            } finally {
1826                                Binder.restoreCallingIdentity(identity);
1827                            }
1828                        }
1829                        // Send accessibility events only for the current user.
1830                        if (currentUser == userId) {
1831                            sendAccessibilityEvent(notification, pkg);
1832                        }
1833
1834                        notifyPostedLocked(r);
1835                    } else {
1836                        Slog.e(TAG, "Not posting notification with icon==0: " + notification);
1837                        if (old != null && old.statusBarKey != null) {
1838                            final long identity = Binder.clearCallingIdentity();
1839                            try {
1840                                mStatusBar.removeNotification(old.statusBarKey);
1841                            } finally {
1842                                Binder.restoreCallingIdentity(identity);
1843                            }
1844
1845                            notifyRemovedLocked(r);
1846                        }
1847                        // ATTENTION: in a future release we will bail out here
1848                        // so that we do not play sounds, show lights, etc. for invalid
1849                        // notifications
1850                        Slog.e(TAG, "WARNING: In a future release this will crash the app: "
1851                                + n.getPackageName());
1852                    }
1853
1854                    // If we're not supposed to beep, vibrate, etc. then don't.
1855                    if (((mDisabledNotifications
1856                            & StatusBarManager.DISABLE_NOTIFICATION_ALERTS) == 0)
1857                            && (!(old != null
1858                                && (notification.flags & Notification.FLAG_ONLY_ALERT_ONCE) != 0 ))
1859                            && (r.getUserId() == UserHandle.USER_ALL ||
1860                                (r.getUserId() == userId && r.getUserId() == currentUser))
1861                            && canInterrupt
1862                            && mSystemReady
1863                            && mAudioManager != null) {
1864
1865                        // sound
1866
1867                        // should we use the default notification sound? (indicated either by
1868                        // DEFAULT_SOUND or because notification.sound is pointing at
1869                        // Settings.System.NOTIFICATION_SOUND)
1870                        final boolean useDefaultSound =
1871                               (notification.defaults & Notification.DEFAULT_SOUND) != 0 ||
1872                                       Settings.System.DEFAULT_NOTIFICATION_URI
1873                                               .equals(notification.sound);
1874
1875                        Uri soundUri = null;
1876                        boolean hasValidSound = false;
1877
1878                        if (useDefaultSound) {
1879                            soundUri = Settings.System.DEFAULT_NOTIFICATION_URI;
1880
1881                            // check to see if the default notification sound is silent
1882                            ContentResolver resolver = getContext().getContentResolver();
1883                            hasValidSound = Settings.System.getString(resolver,
1884                                   Settings.System.NOTIFICATION_SOUND) != null;
1885                        } else if (notification.sound != null) {
1886                            soundUri = notification.sound;
1887                            hasValidSound = (soundUri != null);
1888                        }
1889
1890                        if (hasValidSound) {
1891                            boolean looping =
1892                                    (notification.flags & Notification.FLAG_INSISTENT) != 0;
1893                            int audioStreamType;
1894                            if (notification.audioStreamType >= 0) {
1895                                audioStreamType = notification.audioStreamType;
1896                            } else {
1897                                audioStreamType = DEFAULT_STREAM_TYPE;
1898                            }
1899                            mSoundNotification = r;
1900                            // do not play notifications if stream volume is 0 (typically because
1901                            // ringer mode is silent) or if there is a user of exclusive audio focus
1902                            if ((mAudioManager.getStreamVolume(audioStreamType) != 0)
1903                                    && !mAudioManager.isAudioFocusExclusive()) {
1904                                final long identity = Binder.clearCallingIdentity();
1905                                try {
1906                                    final IRingtonePlayer player =
1907                                            mAudioManager.getRingtonePlayer();
1908                                    if (player != null) {
1909                                        player.playAsync(soundUri, user, looping, audioStreamType);
1910                                    }
1911                                } catch (RemoteException e) {
1912                                } finally {
1913                                    Binder.restoreCallingIdentity(identity);
1914                                }
1915                            }
1916                        }
1917
1918                        // vibrate
1919                        // Does the notification want to specify its own vibration?
1920                        final boolean hasCustomVibrate = notification.vibrate != null;
1921
1922                        // new in 4.2: if there was supposed to be a sound and we're in vibrate
1923                        // mode, and no other vibration is specified, we fall back to vibration
1924                        final boolean convertSoundToVibration =
1925                                   !hasCustomVibrate
1926                                && hasValidSound
1927                                && (mAudioManager.getRingerMode()
1928                                           == AudioManager.RINGER_MODE_VIBRATE);
1929
1930                        // The DEFAULT_VIBRATE flag trumps any custom vibration AND the fallback.
1931                        final boolean useDefaultVibrate =
1932                                (notification.defaults & Notification.DEFAULT_VIBRATE) != 0;
1933
1934                        if ((useDefaultVibrate || convertSoundToVibration || hasCustomVibrate)
1935                                && !(mAudioManager.getRingerMode()
1936                                        == AudioManager.RINGER_MODE_SILENT)) {
1937                            mVibrateNotification = r;
1938
1939                            if (useDefaultVibrate || convertSoundToVibration) {
1940                                // Escalate privileges so we can use the vibrator even if the
1941                                // notifying app does not have the VIBRATE permission.
1942                                long identity = Binder.clearCallingIdentity();
1943                                try {
1944                                    mVibrator.vibrate(r.sbn.getUid(), r.sbn.getBasePkg(),
1945                                        useDefaultVibrate ? mDefaultVibrationPattern
1946                                            : mFallbackVibrationPattern,
1947                                        ((notification.flags & Notification.FLAG_INSISTENT) != 0)
1948                                                ? 0: -1);
1949                                } finally {
1950                                    Binder.restoreCallingIdentity(identity);
1951                                }
1952                            } else if (notification.vibrate.length > 1) {
1953                                // If you want your own vibration pattern, you need the VIBRATE
1954                                // permission
1955                                mVibrator.vibrate(r.sbn.getUid(), r.sbn.getBasePkg(),
1956                                        notification.vibrate,
1957                                    ((notification.flags & Notification.FLAG_INSISTENT) != 0)
1958                                            ? 0: -1);
1959                            }
1960                        }
1961                    }
1962
1963                    // light
1964                    // the most recent thing gets the light
1965                    mLights.remove(old);
1966                    if (mLedNotification == old) {
1967                        mLedNotification = null;
1968                    }
1969                    //Slog.i(TAG, "notification.lights="
1970                    //        + ((old.notification.lights.flags & Notification.FLAG_SHOW_LIGHTS)
1971                    //                  != 0));
1972                    if ((notification.flags & Notification.FLAG_SHOW_LIGHTS) != 0
1973                            && canInterrupt) {
1974                        mLights.add(r);
1975                        updateLightsLocked();
1976                    } else {
1977                        if (old != null
1978                                && ((old.getFlags() & Notification.FLAG_SHOW_LIGHTS) != 0)) {
1979                            updateLightsLocked();
1980                        }
1981                    }
1982                }
1983            }
1984        });
1985
1986        idOut[0] = id;
1987    }
1988
1989     void registerListenerImpl(final INotificationListener listener,
1990            final ComponentName component, final int userid) {
1991        synchronized (mNotificationList) {
1992            try {
1993                NotificationListenerInfo info
1994                        = new NotificationListenerInfo(listener, component, userid, true);
1995                listener.asBinder().linkToDeath(info, 0);
1996                mListeners.add(info);
1997            } catch (RemoteException e) {
1998                // already dead
1999            }
2000        }
2001    }
2002
2003    /**
2004     * Removes a listener from the list and unbinds from its service.
2005     */
2006    void unregisterListenerImpl(final INotificationListener listener, final int userid) {
2007        NotificationListenerInfo info = removeListenerImpl(listener, userid);
2008        if (info != null && info.connection != null) {
2009            getContext().unbindService(info.connection);
2010        }
2011    }
2012
2013    /**
2014     * Removes a listener from the list but does not unbind from the listener's service.
2015     *
2016     * @return the removed listener.
2017     */
2018    NotificationListenerInfo removeListenerImpl(
2019            final INotificationListener listener, final int userid) {
2020        NotificationListenerInfo listenerInfo = null;
2021        synchronized (mNotificationList) {
2022            final int N = mListeners.size();
2023            for (int i=N-1; i>=0; i--) {
2024                final NotificationListenerInfo info = mListeners.get(i);
2025                if (info.listener.asBinder() == listener.asBinder()
2026                        && info.userid == userid) {
2027                    listenerInfo = mListeners.remove(i);
2028                }
2029            }
2030        }
2031        return listenerInfo;
2032    }
2033
2034    void showNextToastLocked() {
2035        ToastRecord record = mToastQueue.get(0);
2036        while (record != null) {
2037            if (DBG) Slog.d(TAG, "Show pkg=" + record.pkg + " callback=" + record.callback);
2038            try {
2039                record.callback.show();
2040                scheduleTimeoutLocked(record);
2041                return;
2042            } catch (RemoteException e) {
2043                Slog.w(TAG, "Object died trying to show notification " + record.callback
2044                        + " in package " + record.pkg);
2045                // remove it from the list and let the process die
2046                int index = mToastQueue.indexOf(record);
2047                if (index >= 0) {
2048                    mToastQueue.remove(index);
2049                }
2050                keepProcessAliveLocked(record.pid);
2051                if (mToastQueue.size() > 0) {
2052                    record = mToastQueue.get(0);
2053                } else {
2054                    record = null;
2055                }
2056            }
2057        }
2058    }
2059
2060    void cancelToastLocked(int index) {
2061        ToastRecord record = mToastQueue.get(index);
2062        try {
2063            record.callback.hide();
2064        } catch (RemoteException e) {
2065            Slog.w(TAG, "Object died trying to hide notification " + record.callback
2066                    + " in package " + record.pkg);
2067            // don't worry about this, we're about to remove it from
2068            // the list anyway
2069        }
2070        mToastQueue.remove(index);
2071        keepProcessAliveLocked(record.pid);
2072        if (mToastQueue.size() > 0) {
2073            // Show the next one. If the callback fails, this will remove
2074            // it from the list, so don't assume that the list hasn't changed
2075            // after this point.
2076            showNextToastLocked();
2077        }
2078    }
2079
2080    private void scheduleTimeoutLocked(ToastRecord r)
2081    {
2082        mHandler.removeCallbacksAndMessages(r);
2083        Message m = Message.obtain(mHandler, MESSAGE_TIMEOUT, r);
2084        long delay = r.duration == Toast.LENGTH_LONG ? LONG_DELAY : SHORT_DELAY;
2085        mHandler.sendMessageDelayed(m, delay);
2086    }
2087
2088    private void handleTimeout(ToastRecord record)
2089    {
2090        if (DBG) Slog.d(TAG, "Timeout pkg=" + record.pkg + " callback=" + record.callback);
2091        synchronized (mToastQueue) {
2092            int index = indexOfToastLocked(record.pkg, record.callback);
2093            if (index >= 0) {
2094                cancelToastLocked(index);
2095            }
2096        }
2097    }
2098
2099    // lock on mToastQueue
2100    int indexOfToastLocked(String pkg, ITransientNotification callback)
2101    {
2102        IBinder cbak = callback.asBinder();
2103        ArrayList<ToastRecord> list = mToastQueue;
2104        int len = list.size();
2105        for (int i=0; i<len; i++) {
2106            ToastRecord r = list.get(i);
2107            if (r.pkg.equals(pkg) && r.callback.asBinder() == cbak) {
2108                return i;
2109            }
2110        }
2111        return -1;
2112    }
2113
2114    // lock on mToastQueue
2115    void keepProcessAliveLocked(int pid)
2116    {
2117        int toastCount = 0; // toasts from this pid
2118        ArrayList<ToastRecord> list = mToastQueue;
2119        int N = list.size();
2120        for (int i=0; i<N; i++) {
2121            ToastRecord r = list.get(i);
2122            if (r.pid == pid) {
2123                toastCount++;
2124            }
2125        }
2126        try {
2127            mAm.setProcessForeground(mForegroundToken, pid, toastCount > 0);
2128        } catch (RemoteException e) {
2129            // Shouldn't happen.
2130        }
2131    }
2132
2133    private final class WorkerHandler extends Handler
2134    {
2135        @Override
2136        public void handleMessage(Message msg)
2137        {
2138            switch (msg.what)
2139            {
2140                case MESSAGE_TIMEOUT:
2141                    handleTimeout((ToastRecord)msg.obj);
2142                    break;
2143            }
2144        }
2145    }
2146
2147
2148    // Notifications
2149    // ============================================================================
2150    static int clamp(int x, int low, int high) {
2151        return (x < low) ? low : ((x > high) ? high : x);
2152    }
2153
2154    void sendAccessibilityEvent(Notification notification, CharSequence packageName) {
2155        AccessibilityManager manager = AccessibilityManager.getInstance(getContext());
2156        if (!manager.isEnabled()) {
2157            return;
2158        }
2159
2160        AccessibilityEvent event =
2161            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED);
2162        event.setPackageName(packageName);
2163        event.setClassName(Notification.class.getName());
2164        event.setParcelableData(notification);
2165        CharSequence tickerText = notification.tickerText;
2166        if (!TextUtils.isEmpty(tickerText)) {
2167            event.getText().add(tickerText);
2168        }
2169
2170        manager.sendAccessibilityEvent(event);
2171    }
2172
2173    private void cancelNotificationLocked(NotificationRecord r, boolean sendDelete) {
2174        // tell the app
2175        if (sendDelete) {
2176            if (r.getNotification().deleteIntent != null) {
2177                try {
2178                    r.getNotification().deleteIntent.send();
2179                } catch (PendingIntent.CanceledException ex) {
2180                    // do nothing - there's no relevant way to recover, and
2181                    //     no reason to let this propagate
2182                    Slog.w(TAG, "canceled PendingIntent for " + r.sbn.getPackageName(), ex);
2183                }
2184            }
2185        }
2186
2187        // status bar
2188        if (r.getNotification().icon != 0) {
2189            final long identity = Binder.clearCallingIdentity();
2190            try {
2191                mStatusBar.removeNotification(r.statusBarKey);
2192            } finally {
2193                Binder.restoreCallingIdentity(identity);
2194            }
2195            r.statusBarKey = null;
2196            notifyRemovedLocked(r);
2197        }
2198
2199        // sound
2200        if (mSoundNotification == r) {
2201            mSoundNotification = null;
2202            final long identity = Binder.clearCallingIdentity();
2203            try {
2204                final IRingtonePlayer player = mAudioManager.getRingtonePlayer();
2205                if (player != null) {
2206                    player.stopAsync();
2207                }
2208            } catch (RemoteException e) {
2209            } finally {
2210                Binder.restoreCallingIdentity(identity);
2211            }
2212        }
2213
2214        // vibrate
2215        if (mVibrateNotification == r) {
2216            mVibrateNotification = null;
2217            long identity = Binder.clearCallingIdentity();
2218            try {
2219                mVibrator.cancel();
2220            }
2221            finally {
2222                Binder.restoreCallingIdentity(identity);
2223            }
2224        }
2225
2226        // light
2227        mLights.remove(r);
2228        if (mLedNotification == r) {
2229            mLedNotification = null;
2230        }
2231
2232        // Save it for users of getHistoricalNotifications()
2233        mArchive.record(r.sbn);
2234    }
2235
2236    /**
2237     * Cancels a notification ONLY if it has all of the {@code mustHaveFlags}
2238     * and none of the {@code mustNotHaveFlags}.
2239     */
2240    void cancelNotification(final String pkg, final String tag, final int id,
2241            final int mustHaveFlags, final int mustNotHaveFlags, final boolean sendDelete,
2242            final int userId) {
2243        // In enqueueNotificationInternal notifications are added by scheduling the
2244        // work on the worker handler. Hence, we also schedule the cancel on this
2245        // handler to avoid a scenario where an add notification call followed by a
2246        // remove notification call ends up in not removing the notification.
2247        mHandler.post(new Runnable() {
2248            @Override
2249            public void run() {
2250                EventLog.writeEvent(EventLogTags.NOTIFICATION_CANCEL, pkg, id, tag, userId,
2251                        mustHaveFlags, mustNotHaveFlags);
2252
2253                synchronized (mNotificationList) {
2254                    int index = indexOfNotificationLocked(pkg, tag, id, userId);
2255                    if (index >= 0) {
2256                        NotificationRecord r = mNotificationList.get(index);
2257
2258                        if ((r.getNotification().flags & mustHaveFlags) != mustHaveFlags) {
2259                            return;
2260                        }
2261                        if ((r.getNotification().flags & mustNotHaveFlags) != 0) {
2262                            return;
2263                        }
2264
2265                        mNotificationList.remove(index);
2266
2267                        cancelNotificationLocked(r, sendDelete);
2268                        updateLightsLocked();
2269                    }
2270                }
2271            }
2272        });
2273    }
2274
2275    /**
2276     * Determine whether the userId applies to the notification in question, either because
2277     * they match exactly, or one of them is USER_ALL (which is treated as a wildcard).
2278     */
2279    private boolean notificationMatchesUserId(NotificationRecord r, int userId) {
2280        return
2281                // looking for USER_ALL notifications? match everything
2282                   userId == UserHandle.USER_ALL
2283                // a notification sent to USER_ALL matches any query
2284                || r.getUserId() == UserHandle.USER_ALL
2285                // an exact user match
2286                || r.getUserId() == userId;
2287    }
2288
2289    /**
2290     * Cancels all notifications from a given package that have all of the
2291     * {@code mustHaveFlags}.
2292     */
2293    boolean cancelAllNotificationsInt(String pkg, int mustHaveFlags,
2294            int mustNotHaveFlags, boolean doit, int userId) {
2295        EventLog.writeEvent(EventLogTags.NOTIFICATION_CANCEL_ALL, pkg, userId,
2296                mustHaveFlags, mustNotHaveFlags);
2297
2298        synchronized (mNotificationList) {
2299            final int N = mNotificationList.size();
2300            boolean canceledSomething = false;
2301            for (int i = N-1; i >= 0; --i) {
2302                NotificationRecord r = mNotificationList.get(i);
2303                if (!notificationMatchesUserId(r, userId)) {
2304                    continue;
2305                }
2306                // Don't remove notifications to all, if there's no package name specified
2307                if (r.getUserId() == UserHandle.USER_ALL && pkg == null) {
2308                    continue;
2309                }
2310                if ((r.getFlags() & mustHaveFlags) != mustHaveFlags) {
2311                    continue;
2312                }
2313                if ((r.getFlags() & mustNotHaveFlags) != 0) {
2314                    continue;
2315                }
2316                if (pkg != null && !r.sbn.getPackageName().equals(pkg)) {
2317                    continue;
2318                }
2319                canceledSomething = true;
2320                if (!doit) {
2321                    return true;
2322                }
2323                mNotificationList.remove(i);
2324                cancelNotificationLocked(r, false);
2325            }
2326            if (canceledSomething) {
2327                updateLightsLocked();
2328            }
2329            return canceledSomething;
2330        }
2331    }
2332
2333
2334
2335    // Return true if the UID is a system or phone UID and therefore should not have
2336    // any notifications or toasts blocked.
2337    boolean isUidSystem(int uid) {
2338        final int appid = UserHandle.getAppId(uid);
2339        return (appid == Process.SYSTEM_UID || appid == Process.PHONE_UID || uid == 0);
2340    }
2341
2342    // same as isUidSystem(int, int) for the Binder caller's UID.
2343    boolean isCallerSystem() {
2344        return isUidSystem(Binder.getCallingUid());
2345    }
2346
2347    void checkCallerIsSystem() {
2348        if (isCallerSystem()) {
2349            return;
2350        }
2351        throw new SecurityException("Disallowed call for uid " + Binder.getCallingUid());
2352    }
2353
2354    void checkCallerIsSystemOrSameApp(String pkg) {
2355        if (isCallerSystem()) {
2356            return;
2357        }
2358        final int uid = Binder.getCallingUid();
2359        try {
2360            ApplicationInfo ai = AppGlobals.getPackageManager().getApplicationInfo(
2361                    pkg, 0, UserHandle.getCallingUserId());
2362            if (!UserHandle.isSameApp(ai.uid, uid)) {
2363                throw new SecurityException("Calling uid " + uid + " gave package"
2364                        + pkg + " which is owned by uid " + ai.uid);
2365            }
2366        } catch (RemoteException re) {
2367            throw new SecurityException("Unknown package " + pkg + "\n" + re);
2368        }
2369    }
2370
2371    void cancelAll(int userId) {
2372        synchronized (mNotificationList) {
2373            final int N = mNotificationList.size();
2374            for (int i=N-1; i>=0; i--) {
2375                NotificationRecord r = mNotificationList.get(i);
2376
2377                if (!notificationMatchesUserId(r, userId)) {
2378                    continue;
2379                }
2380
2381                if ((r.getFlags() & (Notification.FLAG_ONGOING_EVENT
2382                                | Notification.FLAG_NO_CLEAR)) == 0) {
2383                    mNotificationList.remove(i);
2384                    cancelNotificationLocked(r, true);
2385                }
2386            }
2387
2388            updateLightsLocked();
2389        }
2390    }
2391
2392    // lock on mNotificationList
2393    void updateLightsLocked()
2394    {
2395        // handle notification lights
2396        if (mLedNotification == null) {
2397            // get next notification, if any
2398            int n = mLights.size();
2399            if (n > 0) {
2400                mLedNotification = mLights.get(n-1);
2401            }
2402        }
2403
2404        // Don't flash while we are in a call or screen is on
2405        if (mLedNotification == null || mInCall || mScreenOn) {
2406            mNotificationLight.turnOff();
2407        } else {
2408            final Notification ledno = mLedNotification.sbn.getNotification();
2409            int ledARGB = ledno.ledARGB;
2410            int ledOnMS = ledno.ledOnMS;
2411            int ledOffMS = ledno.ledOffMS;
2412            if ((ledno.defaults & Notification.DEFAULT_LIGHTS) != 0) {
2413                ledARGB = mDefaultNotificationColor;
2414                ledOnMS = mDefaultNotificationLedOn;
2415                ledOffMS = mDefaultNotificationLedOff;
2416            }
2417            if (mNotificationPulseEnabled) {
2418                // pulse repeatedly
2419                mNotificationLight.setFlashing(ledARGB, Light.LIGHT_FLASH_TIMED,
2420                        ledOnMS, ledOffMS);
2421            }
2422        }
2423    }
2424
2425    // lock on mNotificationList
2426    int indexOfNotificationLocked(String pkg, String tag, int id, int userId)
2427    {
2428        ArrayList<NotificationRecord> list = mNotificationList;
2429        final int len = list.size();
2430        for (int i=0; i<len; i++) {
2431            NotificationRecord r = list.get(i);
2432            if (!notificationMatchesUserId(r, userId) || r.sbn.getId() != id) {
2433                continue;
2434            }
2435            if (tag == null) {
2436                if (r.sbn.getTag() != null) {
2437                    continue;
2438                }
2439            } else {
2440                if (!tag.equals(r.sbn.getTag())) {
2441                    continue;
2442                }
2443            }
2444            if (r.sbn.getPackageName().equals(pkg)) {
2445                return i;
2446            }
2447        }
2448        return -1;
2449    }
2450
2451    private void updateNotificationPulse() {
2452        synchronized (mNotificationList) {
2453            updateLightsLocked();
2454        }
2455    }
2456}
2457