NotificationManagerService.java revision 983ce97a5dd82688966e783a2c26f34550cfafa5 
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.pm.ApplicationInfo;
40import android.content.pm.PackageInfo;
41import android.content.pm.PackageManager;
42import android.content.pm.PackageManager.NameNotFoundException;
43import android.content.res.Resources;
44import android.database.ContentObserver;
45import android.graphics.Bitmap;
46import android.media.AudioManager;
47import android.media.IRingtonePlayer;
48import android.net.Uri;
49import android.os.Binder;
50import android.os.Environment;
51import android.os.Handler;
52import android.os.IBinder;
53import android.os.IInterface;
54import android.os.Message;
55import android.os.Process;
56import android.os.RemoteException;
57import android.os.UserHandle;
58import android.os.Vibrator;
59import android.provider.Settings;
60import android.service.notification.INotificationListener;
61import android.service.notification.IConditionListener;
62import android.service.notification.IConditionProvider;
63import android.service.notification.NotificationListenerService;
64import android.service.notification.StatusBarNotification;
65import android.service.notification.Condition;
66import android.service.notification.ZenModeConfig;
67import android.telephony.TelephonyManager;
68import android.text.TextUtils;
69import android.util.ArrayMap;
70import android.util.AtomicFile;
71import android.util.Log;
72import android.util.Slog;
73import android.util.Xml;
74import android.view.accessibility.AccessibilityEvent;
75import android.view.accessibility.AccessibilityManager;
76import android.widget.Toast;
77
78import com.android.internal.R;
79import com.android.internal.notification.NotificationScorer;
80import com.android.internal.util.FastXmlSerializer;
81import com.android.server.EventLogTags;
82import com.android.server.SystemService;
83import com.android.server.lights.Light;
84import com.android.server.lights.LightsManager;
85import com.android.server.notification.ManagedServices.ManagedServiceInfo;
86import com.android.server.notification.ManagedServices.UserProfiles;
87import com.android.server.notification.NotificationUsageStats.SingleNotificationStats;
88import com.android.server.statusbar.StatusBarManagerInternal;
89
90import libcore.io.IoUtils;
91
92import org.xmlpull.v1.XmlPullParser;
93import org.xmlpull.v1.XmlPullParserException;
94import org.xmlpull.v1.XmlSerializer;
95
96import java.io.File;
97import java.io.FileDescriptor;
98import java.io.FileInputStream;
99import java.io.FileNotFoundException;
100import java.io.FileOutputStream;
101import java.io.IOException;
102import java.io.PrintWriter;
103import java.lang.reflect.Array;
104import java.util.ArrayDeque;
105import java.util.ArrayList;
106import java.util.Arrays;
107import java.util.HashSet;
108import java.util.Iterator;
109import java.util.NoSuchElementException;
110
111/** {@hide} */
112public class NotificationManagerService extends SystemService {
113    static final String TAG = "NotificationService";
114    static final boolean DBG = false;
115
116    static final int MAX_PACKAGE_NOTIFICATIONS = 50;
117
118    // message codes
119    static final int MESSAGE_TIMEOUT = 2;
120    static final int MESSAGE_SAVE_POLICY_FILE = 3;
121
122    static final int LONG_DELAY = 3500; // 3.5 seconds
123    static final int SHORT_DELAY = 2000; // 2 seconds
124
125    static final long[] DEFAULT_VIBRATE_PATTERN = {0, 250, 250, 250};
126    static final int VIBRATE_PATTERN_MAXLEN = 8 * 2 + 1; // up to eight bumps
127
128    static final int DEFAULT_STREAM_TYPE = AudioManager.STREAM_NOTIFICATION;
129    static final boolean SCORE_ONGOING_HIGHER = false;
130
131    static final int JUNK_SCORE = -1000;
132    static final int NOTIFICATION_PRIORITY_MULTIPLIER = 10;
133    static final int SCORE_DISPLAY_THRESHOLD = Notification.PRIORITY_MIN * NOTIFICATION_PRIORITY_MULTIPLIER;
134
135    // Notifications with scores below this will not interrupt the user, either via LED or
136    // sound or vibration
137    static final int SCORE_INTERRUPTION_THRESHOLD =
138            Notification.PRIORITY_LOW * NOTIFICATION_PRIORITY_MULTIPLIER;
139
140    static final boolean ENABLE_BLOCKED_NOTIFICATIONS = true;
141    static final boolean ENABLE_BLOCKED_TOASTS = true;
142
143    private IActivityManager mAm;
144    AudioManager mAudioManager;
145    StatusBarManagerInternal mStatusBar;
146    Vibrator mVibrator;
147
148    final IBinder mForegroundToken = new Binder();
149    private WorkerHandler mHandler;
150
151    private Light mNotificationLight;
152    Light mAttentionLight;
153    private int mDefaultNotificationColor;
154    private int mDefaultNotificationLedOn;
155
156    private int mDefaultNotificationLedOff;
157    private long[] mDefaultVibrationPattern;
158
159    private long[] mFallbackVibrationPattern;
160    boolean mSystemReady;
161
162    private boolean mDisableNotificationAlerts;
163    NotificationRecord mSoundNotification;
164    NotificationRecord mVibrateNotification;
165
166    // for enabling and disabling notification pulse behavior
167    private boolean mScreenOn = true;
168    private boolean mInCall = false;
169    private boolean mNotificationPulseEnabled;
170
171    // used as a mutex for access to all active notifications & listeners
172    final ArrayList<NotificationRecord> mNotificationList =
173            new ArrayList<NotificationRecord>();
174    final ArrayMap<String, NotificationRecord> mNotificationsByKey =
175            new ArrayMap<String, NotificationRecord>();
176    final ArrayList<ToastRecord> mToastQueue = new ArrayList<ToastRecord>();
177
178    ArrayList<NotificationRecord> mLights = new ArrayList<NotificationRecord>();
179    NotificationRecord mLedNotification;
180
181    private AppOpsManager mAppOps;
182
183    // Notification control database. For now just contains disabled packages.
184    private AtomicFile mPolicyFile;
185    private HashSet<String> mBlockedPackages = new HashSet<String>();
186
187    private static final int DB_VERSION = 1;
188
189    private static final String TAG_BODY = "notification-policy";
190    private static final String ATTR_VERSION = "version";
191
192    private static final String TAG_BLOCKED_PKGS = "blocked-packages";
193    private static final String TAG_PACKAGE = "package";
194    private static final String ATTR_NAME = "name";
195
196    final ArrayList<NotificationScorer> mScorers = new ArrayList<NotificationScorer>();
197
198    private final UserProfiles mUserProfiles = new UserProfiles();
199    private NotificationListeners mListeners;
200    private ConditionProviders mConditionProviders;
201
202    private final NotificationUsageStats mUsageStats = new NotificationUsageStats();
203
204    private static final String EXTRA_INTERCEPT = "android.intercept";
205
206    private static final int MY_UID = Process.myUid();
207    private static final int MY_PID = Process.myPid();
208    private static final int REASON_DELEGATE_CLICK = 1;
209    private static final int REASON_DELEGATE_CANCEL = 2;
210    private static final int REASON_DELEGATE_CANCEL_ALL = 3;
211    private static final int REASON_DELEGATE_ERROR = 4;
212    private static final int REASON_PACKAGE_CHANGED = 5;
213    private static final int REASON_USER_STOPPED = 6;
214    private static final int REASON_PACKAGE_BANNED = 7;
215    private static final int REASON_NOMAN_CANCEL = 8;
216    private static final int REASON_NOMAN_CANCEL_ALL = 9;
217    private static final int REASON_LISTENER_CANCEL = 10;
218    private static final int REASON_LISTENER_CANCEL_ALL = 11;
219
220    private static class Archive {
221        static final int BUFFER_SIZE = 250;
222        ArrayDeque<StatusBarNotification> mBuffer = new ArrayDeque<StatusBarNotification>(BUFFER_SIZE);
223
224        public Archive() {
225        }
226
227        public String toString() {
228            final StringBuilder sb = new StringBuilder();
229            final int N = mBuffer.size();
230            sb.append("Archive (");
231            sb.append(N);
232            sb.append(" notification");
233            sb.append((N==1)?")":"s)");
234            return sb.toString();
235        }
236
237        public void record(StatusBarNotification nr) {
238            if (mBuffer.size() == BUFFER_SIZE) {
239                mBuffer.removeFirst();
240            }
241
242            // We don't want to store the heavy bits of the notification in the archive,
243            // but other clients in the system process might be using the object, so we
244            // store a (lightened) copy.
245            mBuffer.addLast(nr.cloneLight());
246        }
247
248
249        public void clear() {
250            mBuffer.clear();
251        }
252
253        public Iterator<StatusBarNotification> descendingIterator() {
254            return mBuffer.descendingIterator();
255        }
256        public Iterator<StatusBarNotification> ascendingIterator() {
257            return mBuffer.iterator();
258        }
259        public Iterator<StatusBarNotification> filter(
260                final Iterator<StatusBarNotification> iter, final String pkg, final int userId) {
261            return new Iterator<StatusBarNotification>() {
262                StatusBarNotification mNext = findNext();
263
264                private StatusBarNotification findNext() {
265                    while (iter.hasNext()) {
266                        StatusBarNotification nr = iter.next();
267                        if ((pkg == null || nr.getPackageName() == pkg)
268                                && (userId == UserHandle.USER_ALL || nr.getUserId() == userId)) {
269                            return nr;
270                        }
271                    }
272                    return null;
273                }
274
275                @Override
276                public boolean hasNext() {
277                    return mNext == null;
278                }
279
280                @Override
281                public StatusBarNotification next() {
282                    StatusBarNotification next = mNext;
283                    if (next == null) {
284                        throw new NoSuchElementException();
285                    }
286                    mNext = findNext();
287                    return next;
288                }
289
290                @Override
291                public void remove() {
292                    iter.remove();
293                }
294            };
295        }
296
297        public StatusBarNotification[] getArray(int count) {
298            if (count == 0) count = Archive.BUFFER_SIZE;
299            final StatusBarNotification[] a
300                    = new StatusBarNotification[Math.min(count, mBuffer.size())];
301            Iterator<StatusBarNotification> iter = descendingIterator();
302            int i=0;
303            while (iter.hasNext() && i < count) {
304                a[i++] = iter.next();
305            }
306            return a;
307        }
308
309        public StatusBarNotification[] getArray(int count, String pkg, int userId) {
310            if (count == 0) count = Archive.BUFFER_SIZE;
311            final StatusBarNotification[] a
312                    = new StatusBarNotification[Math.min(count, mBuffer.size())];
313            Iterator<StatusBarNotification> iter = filter(descendingIterator(), pkg, userId);
314            int i=0;
315            while (iter.hasNext() && i < count) {
316                a[i++] = iter.next();
317            }
318            return a;
319        }
320
321    }
322
323    Archive mArchive = new Archive();
324
325    private void loadPolicyFile() {
326        synchronized(mPolicyFile) {
327            mBlockedPackages.clear();
328
329            FileInputStream infile = null;
330            try {
331                infile = mPolicyFile.openRead();
332                final XmlPullParser parser = Xml.newPullParser();
333                parser.setInput(infile, null);
334
335                int type;
336                String tag;
337                int version = DB_VERSION;
338                while ((type = parser.next()) != END_DOCUMENT) {
339                    tag = parser.getName();
340                    if (type == START_TAG) {
341                        if (TAG_BODY.equals(tag)) {
342                            version = Integer.parseInt(
343                                    parser.getAttributeValue(null, ATTR_VERSION));
344                        } else if (TAG_BLOCKED_PKGS.equals(tag)) {
345                            while ((type = parser.next()) != END_DOCUMENT) {
346                                tag = parser.getName();
347                                if (TAG_PACKAGE.equals(tag)) {
348                                    mBlockedPackages.add(
349                                            parser.getAttributeValue(null, ATTR_NAME));
350                                } else if (TAG_BLOCKED_PKGS.equals(tag) && type == END_TAG) {
351                                    break;
352                                }
353                            }
354                        }
355                    }
356                    mZenModeHelper.readXml(parser);
357                }
358            } catch (FileNotFoundException e) {
359                // No data yet
360            } catch (IOException e) {
361                Log.wtf(TAG, "Unable to read notification policy", e);
362            } catch (NumberFormatException e) {
363                Log.wtf(TAG, "Unable to parse notification policy", e);
364            } catch (XmlPullParserException e) {
365                Log.wtf(TAG, "Unable to parse notification policy", e);
366            } finally {
367                IoUtils.closeQuietly(infile);
368            }
369        }
370    }
371
372    public void savePolicyFile() {
373        mHandler.removeMessages(MESSAGE_SAVE_POLICY_FILE);
374        mHandler.sendEmptyMessage(MESSAGE_SAVE_POLICY_FILE);
375    }
376
377    private void handleSavePolicyFile() {
378        Slog.d(TAG, "handleSavePolicyFile");
379        synchronized (mPolicyFile) {
380            final FileOutputStream stream;
381            try {
382                stream = mPolicyFile.startWrite();
383            } catch (IOException e) {
384                Slog.w(TAG, "Failed to save policy file", e);
385                return;
386            }
387
388            try {
389                final XmlSerializer out = new FastXmlSerializer();
390                out.setOutput(stream, "utf-8");
391                out.startDocument(null, true);
392                out.startTag(null, TAG_BODY);
393                out.attribute(null, ATTR_VERSION, Integer.toString(DB_VERSION));
394                mZenModeHelper.writeXml(out);
395                out.endTag(null, TAG_BODY);
396                out.endDocument();
397                mPolicyFile.finishWrite(stream);
398            } catch (IOException e) {
399                Slog.w(TAG, "Failed to save policy file, restoring backup", e);
400                mPolicyFile.failWrite(stream);
401            }
402        }
403    }
404
405    /** Use this when you actually want to post a notification or toast.
406     *
407     * Unchecked. Not exposed via Binder, but can be called in the course of enqueue*().
408     */
409    private boolean noteNotificationOp(String pkg, int uid) {
410        if (mAppOps.noteOpNoThrow(AppOpsManager.OP_POST_NOTIFICATION, uid, pkg)
411                != AppOpsManager.MODE_ALLOWED) {
412            Slog.v(TAG, "notifications are disabled by AppOps for " + pkg);
413            return false;
414        }
415        return true;
416    }
417
418    private static String idDebugString(Context baseContext, String packageName, int id) {
419        Context c = null;
420
421        if (packageName != null) {
422            try {
423                c = baseContext.createPackageContext(packageName, 0);
424            } catch (NameNotFoundException e) {
425                c = baseContext;
426            }
427        } else {
428            c = baseContext;
429        }
430
431        String pkg;
432        String type;
433        String name;
434
435        Resources r = c.getResources();
436        try {
437            return r.getResourceName(id);
438        } catch (Resources.NotFoundException e) {
439            return "<name unknown>";
440        }
441    }
442
443
444
445    public static final class NotificationRecord
446    {
447        final StatusBarNotification sbn;
448        final SingleNotificationStats stats = new SingleNotificationStats();
449        IBinder statusBarKey;
450
451        NotificationRecord(StatusBarNotification sbn)
452        {
453            this.sbn = sbn;
454        }
455
456        public Notification getNotification() { return sbn.getNotification(); }
457        public int getFlags() { return sbn.getNotification().flags; }
458        public int getUserId() { return sbn.getUserId(); }
459
460        void dump(PrintWriter pw, String prefix, Context baseContext) {
461            final Notification notification = sbn.getNotification();
462            pw.println(prefix + this);
463            pw.println(prefix + "  uid=" + sbn.getUid() + " userId=" + sbn.getUserId());
464            pw.println(prefix + "  icon=0x" + Integer.toHexString(notification.icon)
465                    + " / " + idDebugString(baseContext, sbn.getPackageName(), notification.icon));
466            pw.println(prefix + "  pri=" + notification.priority + " score=" + sbn.getScore());
467            pw.println(prefix + "  key=" + sbn.getKey());
468            pw.println(prefix + "  contentIntent=" + notification.contentIntent);
469            pw.println(prefix + "  deleteIntent=" + notification.deleteIntent);
470            pw.println(prefix + "  tickerText=" + notification.tickerText);
471            pw.println(prefix + "  contentView=" + notification.contentView);
472            pw.println(prefix + String.format("  defaults=0x%08x flags=0x%08x",
473                    notification.defaults, notification.flags));
474            pw.println(prefix + "  sound=" + notification.sound);
475            pw.println(prefix + "  vibrate=" + Arrays.toString(notification.vibrate));
476            pw.println(prefix + String.format("  led=0x%08x onMs=%d offMs=%d",
477                    notification.ledARGB, notification.ledOnMS, notification.ledOffMS));
478            if (notification.actions != null && notification.actions.length > 0) {
479                pw.println(prefix + "  actions={");
480                final int N = notification.actions.length;
481                for (int i=0; i<N; i++) {
482                    final Notification.Action action = notification.actions[i];
483                    pw.println(String.format("%s    [%d] \"%s\" -> %s",
484                            prefix,
485                            i,
486                            action.title,
487                            action.actionIntent.toString()
488                            ));
489                }
490                pw.println(prefix + "  }");
491            }
492            if (notification.extras != null && notification.extras.size() > 0) {
493                pw.println(prefix + "  extras={");
494                for (String key : notification.extras.keySet()) {
495                    pw.print(prefix + "    " + key + "=");
496                    Object val = notification.extras.get(key);
497                    if (val == null) {
498                        pw.println("null");
499                    } else {
500                        pw.print(val.toString());
501                        if (val instanceof Bitmap) {
502                            pw.print(String.format(" (%dx%d)",
503                                    ((Bitmap) val).getWidth(),
504                                    ((Bitmap) val).getHeight()));
505                        } else if (val.getClass().isArray()) {
506                            pw.println(" {");
507                            final int N = Array.getLength(val);
508                            for (int i=0; i<N; i++) {
509                                if (i > 0) pw.println(",");
510                                pw.print(prefix + "      " + Array.get(val, i));
511                            }
512                            pw.print("\n" + prefix + "    }");
513                        }
514                        pw.println();
515                    }
516                }
517                pw.println(prefix + "  }");
518            }
519            pw.println(prefix + "  stats=" + stats.toString());
520        }
521
522        @Override
523        public final String toString() {
524            return String.format(
525                    "NotificationRecord(0x%08x: pkg=%s user=%s id=%d tag=%s score=%d key=%s: %s)",
526                    System.identityHashCode(this),
527                    this.sbn.getPackageName(), this.sbn.getUser(), this.sbn.getId(),
528                    this.sbn.getTag(), this.sbn.getScore(), this.sbn.getKey(),
529                    this.sbn.getNotification());
530        }
531    }
532
533    private static final class ToastRecord
534    {
535        final int pid;
536        final String pkg;
537        final ITransientNotification callback;
538        int duration;
539
540        ToastRecord(int pid, String pkg, ITransientNotification callback, int duration)
541        {
542            this.pid = pid;
543            this.pkg = pkg;
544            this.callback = callback;
545            this.duration = duration;
546        }
547
548        void update(int duration) {
549            this.duration = duration;
550        }
551
552        void dump(PrintWriter pw, String prefix) {
553            pw.println(prefix + this);
554        }
555
556        @Override
557        public final String toString()
558        {
559            return "ToastRecord{"
560                + Integer.toHexString(System.identityHashCode(this))
561                + " pkg=" + pkg
562                + " callback=" + callback
563                + " duration=" + duration;
564        }
565    }
566
567    private final NotificationDelegate mNotificationDelegate = new NotificationDelegate() {
568
569        @Override
570        public void onSetDisabled(int status) {
571            synchronized (mNotificationList) {
572                mDisableNotificationAlerts = (status & StatusBarManager.DISABLE_NOTIFICATION_ALERTS) != 0;
573                if (mDisableNotificationAlerts) {
574                    // cancel whatever's going on
575                    long identity = Binder.clearCallingIdentity();
576                    try {
577                        final IRingtonePlayer player = mAudioManager.getRingtonePlayer();
578                        if (player != null) {
579                            player.stopAsync();
580                        }
581                    } catch (RemoteException e) {
582                    } finally {
583                        Binder.restoreCallingIdentity(identity);
584                    }
585
586                    identity = Binder.clearCallingIdentity();
587                    try {
588                        mVibrator.cancel();
589                    } finally {
590                        Binder.restoreCallingIdentity(identity);
591                    }
592                }
593            }
594        }
595
596        @Override
597        public void onClearAll(int callingUid, int callingPid, int userId) {
598            synchronized (mNotificationList) {
599                cancelAllLocked(callingUid, callingPid, userId, REASON_DELEGATE_CANCEL_ALL, null,
600                        /*includeCurrentProfiles*/ true);
601            }
602        }
603
604        @Override
605        public void onNotificationClick(int callingUid, int callingPid, String key) {
606            synchronized (mNotificationList) {
607                EventLogTags.writeNotificationClicked(key);
608                NotificationRecord r = mNotificationsByKey.get(key);
609                if (r == null) {
610                    Log.w(TAG, "No notification with key: " + key);
611                    return;
612                }
613                StatusBarNotification sbn = r.sbn;
614                cancelNotification(callingUid, callingPid, sbn.getPackageName(), sbn.getTag(),
615                        sbn.getId(), Notification.FLAG_AUTO_CANCEL,
616                        Notification.FLAG_FOREGROUND_SERVICE, false, r.getUserId(),
617                        REASON_DELEGATE_CLICK, null);
618            }
619        }
620
621        @Override
622        public void onNotificationClear(int callingUid, int callingPid,
623                String pkg, String tag, int id, int userId) {
624            cancelNotification(callingUid, callingPid, pkg, tag, id, 0,
625                    Notification.FLAG_ONGOING_EVENT | Notification.FLAG_FOREGROUND_SERVICE,
626                    true, userId, REASON_DELEGATE_CANCEL, null);
627        }
628
629        @Override
630        public void onPanelRevealed() {
631            EventLogTags.writeNotificationPanelRevealed();
632            synchronized (mNotificationList) {
633                // sound
634                mSoundNotification = null;
635
636                long identity = Binder.clearCallingIdentity();
637                try {
638                    final IRingtonePlayer player = mAudioManager.getRingtonePlayer();
639                    if (player != null) {
640                        player.stopAsync();
641                    }
642                } catch (RemoteException e) {
643                } finally {
644                    Binder.restoreCallingIdentity(identity);
645                }
646
647                // vibrate
648                mVibrateNotification = null;
649                identity = Binder.clearCallingIdentity();
650                try {
651                    mVibrator.cancel();
652                } finally {
653                    Binder.restoreCallingIdentity(identity);
654                }
655
656                // light
657                mLights.clear();
658                mLedNotification = null;
659                updateLightsLocked();
660            }
661        }
662
663        @Override
664        public void onPanelHidden() {
665            EventLogTags.writeNotificationPanelHidden();
666        }
667
668        @Override
669        public void onNotificationError(int callingUid, int callingPid, String pkg, String tag, int id,
670                int uid, int initialPid, String message, int userId) {
671            Slog.d(TAG, "onNotification error pkg=" + pkg + " tag=" + tag + " id=" + id
672                    + "; will crashApplication(uid=" + uid + ", pid=" + initialPid + ")");
673            cancelNotification(callingUid, callingPid, pkg, tag, id, 0, 0, false, userId,
674                    REASON_DELEGATE_ERROR, null);
675            long ident = Binder.clearCallingIdentity();
676            try {
677                ActivityManagerNative.getDefault().crashApplication(uid, initialPid, pkg,
678                        "Bad notification posted from package " + pkg
679                        + ": " + message);
680            } catch (RemoteException e) {
681            }
682            Binder.restoreCallingIdentity(ident);
683        }
684
685        @Override
686        public boolean allowDisable(int what, IBinder token, String pkg) {
687            return mZenModeHelper.allowDisable(what, token, pkg);
688        }
689
690        @Override
691        public void onNotificationVisibilityChanged(
692                String[] newlyVisibleKeys, String[] noLongerVisibleKeys) {
693            // Using ';' as separator since eventlogs uses ',' to separate
694            // args.
695            EventLogTags.writeNotificationVisibilityChanged(
696                    TextUtils.join(";", newlyVisibleKeys),
697                    TextUtils.join(";", noLongerVisibleKeys));
698        }
699    };
700
701    private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
702        @Override
703        public void onReceive(Context context, Intent intent) {
704            String action = intent.getAction();
705
706            boolean queryRestart = false;
707            boolean queryRemove = false;
708            boolean packageChanged = false;
709            boolean cancelNotifications = true;
710
711            if (action.equals(Intent.ACTION_PACKAGE_ADDED)
712                    || (queryRemove=action.equals(Intent.ACTION_PACKAGE_REMOVED))
713                    || action.equals(Intent.ACTION_PACKAGE_RESTARTED)
714                    || (packageChanged=action.equals(Intent.ACTION_PACKAGE_CHANGED))
715                    || (queryRestart=action.equals(Intent.ACTION_QUERY_PACKAGE_RESTART))
716                    || action.equals(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE)) {
717                String pkgList[] = null;
718                boolean queryReplace = queryRemove &&
719                        intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
720                if (DBG) Slog.i(TAG, "action=" + action + " queryReplace=" + queryReplace);
721                if (action.equals(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE)) {
722                    pkgList = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
723                } else if (queryRestart) {
724                    pkgList = intent.getStringArrayExtra(Intent.EXTRA_PACKAGES);
725                } else {
726                    Uri uri = intent.getData();
727                    if (uri == null) {
728                        return;
729                    }
730                    String pkgName = uri.getSchemeSpecificPart();
731                    if (pkgName == null) {
732                        return;
733                    }
734                    if (packageChanged) {
735                        // We cancel notifications for packages which have just been disabled
736                        try {
737                            final int enabled = getContext().getPackageManager()
738                                    .getApplicationEnabledSetting(pkgName);
739                            if (enabled == PackageManager.COMPONENT_ENABLED_STATE_ENABLED
740                                    || enabled == PackageManager.COMPONENT_ENABLED_STATE_DEFAULT) {
741                                cancelNotifications = false;
742                            }
743                        } catch (IllegalArgumentException e) {
744                            // Package doesn't exist; probably racing with uninstall.
745                            // cancelNotifications is already true, so nothing to do here.
746                            if (DBG) {
747                                Slog.i(TAG, "Exception trying to look up app enabled setting", e);
748                            }
749                        }
750                    }
751                    pkgList = new String[]{pkgName};
752                }
753
754                if (pkgList != null && (pkgList.length > 0)) {
755                    for (String pkgName : pkgList) {
756                        if (cancelNotifications) {
757                            cancelAllNotificationsInt(MY_UID, MY_PID, pkgName, 0, 0, !queryRestart,
758                                    UserHandle.USER_ALL, REASON_PACKAGE_CHANGED, null);
759                        }
760                    }
761                }
762                mListeners.onPackagesChanged(queryReplace, pkgList);
763                mConditionProviders.onPackagesChanged(queryReplace, pkgList);
764            } else if (action.equals(Intent.ACTION_SCREEN_ON)) {
765                // Keep track of screen on/off state, but do not turn off the notification light
766                // until user passes through the lock screen or views the notification.
767                mScreenOn = true;
768            } else if (action.equals(Intent.ACTION_SCREEN_OFF)) {
769                mScreenOn = false;
770            } else if (action.equals(TelephonyManager.ACTION_PHONE_STATE_CHANGED)) {
771                mInCall = TelephonyManager.EXTRA_STATE_OFFHOOK
772                        .equals(intent.getStringExtra(TelephonyManager.EXTRA_STATE));
773                updateNotificationPulse();
774            } else if (action.equals(Intent.ACTION_USER_STOPPED)) {
775                int userHandle = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1);
776                if (userHandle >= 0) {
777                    cancelAllNotificationsInt(MY_UID, MY_PID, null, 0, 0, true, userHandle,
778                            REASON_USER_STOPPED, null);
779                }
780            } else if (action.equals(Intent.ACTION_USER_PRESENT)) {
781                // turn off LED when user passes through lock screen
782                mNotificationLight.turnOff();
783            } else if (action.equals(Intent.ACTION_USER_SWITCHED)) {
784                // reload per-user settings
785                mSettingsObserver.update(null);
786                mUserProfiles.updateCache(context);
787            } else if (action.equals(Intent.ACTION_USER_ADDED)) {
788                mUserProfiles.updateCache(context);
789            }
790        }
791    };
792
793    class SettingsObserver extends ContentObserver {
794        private final Uri NOTIFICATION_LIGHT_PULSE_URI
795                = Settings.System.getUriFor(Settings.System.NOTIFICATION_LIGHT_PULSE);
796
797        SettingsObserver(Handler handler) {
798            super(handler);
799        }
800
801        void observe() {
802            ContentResolver resolver = getContext().getContentResolver();
803            resolver.registerContentObserver(NOTIFICATION_LIGHT_PULSE_URI,
804                    false, this, UserHandle.USER_ALL);
805            update(null);
806        }
807
808        @Override public void onChange(boolean selfChange, Uri uri) {
809            update(uri);
810        }
811
812        public void update(Uri uri) {
813            ContentResolver resolver = getContext().getContentResolver();
814            if (uri == null || NOTIFICATION_LIGHT_PULSE_URI.equals(uri)) {
815                boolean pulseEnabled = Settings.System.getInt(resolver,
816                            Settings.System.NOTIFICATION_LIGHT_PULSE, 0) != 0;
817                if (mNotificationPulseEnabled != pulseEnabled) {
818                    mNotificationPulseEnabled = pulseEnabled;
819                    updateNotificationPulse();
820                }
821            }
822        }
823    }
824
825    private SettingsObserver mSettingsObserver;
826    private ZenModeHelper mZenModeHelper;
827
828    static long[] getLongArray(Resources r, int resid, int maxlen, long[] def) {
829        int[] ar = r.getIntArray(resid);
830        if (ar == null) {
831            return def;
832        }
833        final int len = ar.length > maxlen ? maxlen : ar.length;
834        long[] out = new long[len];
835        for (int i=0; i<len; i++) {
836            out[i] = ar[i];
837        }
838        return out;
839    }
840
841    public NotificationManagerService(Context context) {
842        super(context);
843    }
844
845    @Override
846    public void onStart() {
847        mAm = ActivityManagerNative.getDefault();
848        mAppOps = (AppOpsManager) getContext().getSystemService(Context.APP_OPS_SERVICE);
849        mVibrator = (Vibrator) getContext().getSystemService(Context.VIBRATOR_SERVICE);
850
851        mHandler = new WorkerHandler();
852        mZenModeHelper = new ZenModeHelper(getContext(), mHandler);
853        mZenModeHelper.addCallback(new ZenModeHelper.Callback() {
854            @Override
855            public void onConfigChanged() {
856                savePolicyFile();
857            }
858        });
859        final File systemDir = new File(Environment.getDataDirectory(), "system");
860        mPolicyFile = new AtomicFile(new File(systemDir, "notification_policy.xml"));
861
862        importOldBlockDb();
863
864        mListeners = new NotificationListeners();
865        mConditionProviders = new ConditionProviders(getContext(),
866                mHandler, mUserProfiles, mZenModeHelper);
867        mStatusBar = getLocalService(StatusBarManagerInternal.class);
868        mStatusBar.setNotificationDelegate(mNotificationDelegate);
869
870        final LightsManager lights = getLocalService(LightsManager.class);
871        mNotificationLight = lights.getLight(LightsManager.LIGHT_ID_NOTIFICATIONS);
872        mAttentionLight = lights.getLight(LightsManager.LIGHT_ID_ATTENTION);
873
874        Resources resources = getContext().getResources();
875        mDefaultNotificationColor = resources.getColor(
876                R.color.config_defaultNotificationColor);
877        mDefaultNotificationLedOn = resources.getInteger(
878                R.integer.config_defaultNotificationLedOn);
879        mDefaultNotificationLedOff = resources.getInteger(
880                R.integer.config_defaultNotificationLedOff);
881
882        mDefaultVibrationPattern = getLongArray(resources,
883                R.array.config_defaultNotificationVibePattern,
884                VIBRATE_PATTERN_MAXLEN,
885                DEFAULT_VIBRATE_PATTERN);
886
887        mFallbackVibrationPattern = getLongArray(resources,
888                R.array.config_notificationFallbackVibePattern,
889                VIBRATE_PATTERN_MAXLEN,
890                DEFAULT_VIBRATE_PATTERN);
891
892        // Don't start allowing notifications until the setup wizard has run once.
893        // After that, including subsequent boots, init with notifications turned on.
894        // This works on the first boot because the setup wizard will toggle this
895        // flag at least once and we'll go back to 0 after that.
896        if (0 == Settings.Global.getInt(getContext().getContentResolver(),
897                    Settings.Global.DEVICE_PROVISIONED, 0)) {
898            mDisableNotificationAlerts = true;
899        }
900        mZenModeHelper.updateZenMode();
901
902        mUserProfiles.updateCache(getContext());
903
904        // register for various Intents
905        IntentFilter filter = new IntentFilter();
906        filter.addAction(Intent.ACTION_SCREEN_ON);
907        filter.addAction(Intent.ACTION_SCREEN_OFF);
908        filter.addAction(TelephonyManager.ACTION_PHONE_STATE_CHANGED);
909        filter.addAction(Intent.ACTION_USER_PRESENT);
910        filter.addAction(Intent.ACTION_USER_STOPPED);
911        filter.addAction(Intent.ACTION_USER_SWITCHED);
912        filter.addAction(Intent.ACTION_USER_ADDED);
913        getContext().registerReceiver(mIntentReceiver, filter);
914        IntentFilter pkgFilter = new IntentFilter();
915        pkgFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
916        pkgFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);
917        pkgFilter.addAction(Intent.ACTION_PACKAGE_CHANGED);
918        pkgFilter.addAction(Intent.ACTION_PACKAGE_RESTARTED);
919        pkgFilter.addAction(Intent.ACTION_QUERY_PACKAGE_RESTART);
920        pkgFilter.addDataScheme("package");
921        getContext().registerReceiver(mIntentReceiver, pkgFilter);
922        IntentFilter sdFilter = new IntentFilter(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
923        getContext().registerReceiver(mIntentReceiver, sdFilter);
924
925        mSettingsObserver = new SettingsObserver(mHandler);
926
927        // spin up NotificationScorers
928        String[] notificationScorerNames = resources.getStringArray(
929                R.array.config_notificationScorers);
930        for (String scorerName : notificationScorerNames) {
931            try {
932                Class<?> scorerClass = getContext().getClassLoader().loadClass(scorerName);
933                NotificationScorer scorer = (NotificationScorer) scorerClass.newInstance();
934                scorer.initialize(getContext());
935                mScorers.add(scorer);
936            } catch (ClassNotFoundException e) {
937                Slog.w(TAG, "Couldn't find scorer " + scorerName + ".", e);
938            } catch (InstantiationException e) {
939                Slog.w(TAG, "Couldn't instantiate scorer " + scorerName + ".", e);
940            } catch (IllegalAccessException e) {
941                Slog.w(TAG, "Problem accessing scorer " + scorerName + ".", e);
942            }
943        }
944
945        publishBinderService(Context.NOTIFICATION_SERVICE, mService);
946        publishLocalService(NotificationManagerInternal.class, mInternalService);
947    }
948
949    /**
950     * Read the old XML-based app block database and import those blockages into the AppOps system.
951     */
952    private void importOldBlockDb() {
953        loadPolicyFile();
954
955        PackageManager pm = getContext().getPackageManager();
956        for (String pkg : mBlockedPackages) {
957            PackageInfo info = null;
958            try {
959                info = pm.getPackageInfo(pkg, 0);
960                setNotificationsEnabledForPackageImpl(pkg, info.applicationInfo.uid, false);
961            } catch (NameNotFoundException e) {
962                // forget you
963            }
964        }
965        mBlockedPackages.clear();
966    }
967
968    @Override
969    public void onBootPhase(int phase) {
970        if (phase == SystemService.PHASE_SYSTEM_SERVICES_READY) {
971            // no beeping until we're basically done booting
972            mSystemReady = true;
973
974            // Grab our optional AudioService
975            mAudioManager = (AudioManager) getContext().getSystemService(Context.AUDIO_SERVICE);
976
977        } else if (phase == SystemService.PHASE_THIRD_PARTY_APPS_CAN_START) {
978            // This observer will force an update when observe is called, causing us to
979            // bind to listener services.
980            mSettingsObserver.observe();
981            mListeners.onBootPhaseAppsCanStart();
982            mConditionProviders.onBootPhaseAppsCanStart();
983        }
984    }
985
986    void setNotificationsEnabledForPackageImpl(String pkg, int uid, boolean enabled) {
987        Slog.v(TAG, (enabled?"en":"dis") + "abling notifications for " + pkg);
988
989        mAppOps.setMode(AppOpsManager.OP_POST_NOTIFICATION, uid, pkg,
990                enabled ? AppOpsManager.MODE_ALLOWED : AppOpsManager.MODE_IGNORED);
991
992        // Now, cancel any outstanding notifications that are part of a just-disabled app
993        if (ENABLE_BLOCKED_NOTIFICATIONS && !enabled) {
994            cancelAllNotificationsInt(MY_UID, MY_PID, pkg, 0, 0, true, UserHandle.getUserId(uid),
995                    REASON_PACKAGE_BANNED, null);
996        }
997    }
998
999    private final IBinder mService = new INotificationManager.Stub() {
1000        // Toasts
1001        // ============================================================================
1002
1003        @Override
1004        public void enqueueToast(String pkg, ITransientNotification callback, int duration)
1005        {
1006            if (DBG) {
1007                Slog.i(TAG, "enqueueToast pkg=" + pkg + " callback=" + callback
1008                        + " duration=" + duration);
1009            }
1010
1011            if (pkg == null || callback == null) {
1012                Slog.e(TAG, "Not doing toast. pkg=" + pkg + " callback=" + callback);
1013                return ;
1014            }
1015
1016            final boolean isSystemToast = isCallerSystem() || ("android".equals(pkg));
1017
1018            if (ENABLE_BLOCKED_TOASTS && !noteNotificationOp(pkg, Binder.getCallingUid())) {
1019                if (!isSystemToast) {
1020                    Slog.e(TAG, "Suppressing toast from package " + pkg + " by user request.");
1021                    return;
1022                }
1023            }
1024
1025            synchronized (mToastQueue) {
1026                int callingPid = Binder.getCallingPid();
1027                long callingId = Binder.clearCallingIdentity();
1028                try {
1029                    ToastRecord record;
1030                    int index = indexOfToastLocked(pkg, callback);
1031                    // If it's already in the queue, we update it in place, we don't
1032                    // move it to the end of the queue.
1033                    if (index >= 0) {
1034                        record = mToastQueue.get(index);
1035                        record.update(duration);
1036                    } else {
1037                        // Limit the number of toasts that any given package except the android
1038                        // package can enqueue.  Prevents DOS attacks and deals with leaks.
1039                        if (!isSystemToast) {
1040                            int count = 0;
1041                            final int N = mToastQueue.size();
1042                            for (int i=0; i<N; i++) {
1043                                 final ToastRecord r = mToastQueue.get(i);
1044                                 if (r.pkg.equals(pkg)) {
1045                                     count++;
1046                                     if (count >= MAX_PACKAGE_NOTIFICATIONS) {
1047                                         Slog.e(TAG, "Package has already posted " + count
1048                                                + " toasts. Not showing more. Package=" + pkg);
1049                                         return;
1050                                     }
1051                                 }
1052                            }
1053                        }
1054
1055                        record = new ToastRecord(callingPid, pkg, callback, duration);
1056                        mToastQueue.add(record);
1057                        index = mToastQueue.size() - 1;
1058                        keepProcessAliveLocked(callingPid);
1059                    }
1060                    // If it's at index 0, it's the current toast.  It doesn't matter if it's
1061                    // new or just been updated.  Call back and tell it to show itself.
1062                    // If the callback fails, this will remove it from the list, so don't
1063                    // assume that it's valid after this.
1064                    if (index == 0) {
1065                        showNextToastLocked();
1066                    }
1067                } finally {
1068                    Binder.restoreCallingIdentity(callingId);
1069                }
1070            }
1071        }
1072
1073        @Override
1074        public void cancelToast(String pkg, ITransientNotification callback) {
1075            Slog.i(TAG, "cancelToast pkg=" + pkg + " callback=" + callback);
1076
1077            if (pkg == null || callback == null) {
1078                Slog.e(TAG, "Not cancelling notification. pkg=" + pkg + " callback=" + callback);
1079                return ;
1080            }
1081
1082            synchronized (mToastQueue) {
1083                long callingId = Binder.clearCallingIdentity();
1084                try {
1085                    int index = indexOfToastLocked(pkg, callback);
1086                    if (index >= 0) {
1087                        cancelToastLocked(index);
1088                    } else {
1089                        Slog.w(TAG, "Toast already cancelled. pkg=" + pkg
1090                                + " callback=" + callback);
1091                    }
1092                } finally {
1093                    Binder.restoreCallingIdentity(callingId);
1094                }
1095            }
1096        }
1097
1098        @Override
1099        public void enqueueNotificationWithTag(String pkg, String opPkg, String tag, int id,
1100                Notification notification, int[] idOut, int userId) throws RemoteException {
1101            enqueueNotificationInternal(pkg, opPkg, Binder.getCallingUid(),
1102                    Binder.getCallingPid(), tag, id, notification, idOut, userId);
1103        }
1104
1105        @Override
1106        public void cancelNotificationWithTag(String pkg, String tag, int id, int userId) {
1107            checkCallerIsSystemOrSameApp(pkg);
1108            userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(),
1109                    Binder.getCallingUid(), userId, true, false, "cancelNotificationWithTag", pkg);
1110            // Don't allow client applications to cancel foreground service notis.
1111            cancelNotification(Binder.getCallingUid(), Binder.getCallingPid(), pkg, tag, id, 0,
1112                    Binder.getCallingUid() == Process.SYSTEM_UID
1113                    ? 0 : Notification.FLAG_FOREGROUND_SERVICE, false, userId, REASON_NOMAN_CANCEL,
1114                    null);
1115        }
1116
1117        @Override
1118        public void cancelAllNotifications(String pkg, int userId) {
1119            checkCallerIsSystemOrSameApp(pkg);
1120
1121            userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(),
1122                    Binder.getCallingUid(), userId, true, false, "cancelAllNotifications", pkg);
1123
1124            // Calling from user space, don't allow the canceling of actively
1125            // running foreground services.
1126            cancelAllNotificationsInt(Binder.getCallingUid(), Binder.getCallingPid(),
1127                    pkg, 0, Notification.FLAG_FOREGROUND_SERVICE, true, userId,
1128                    REASON_NOMAN_CANCEL_ALL, null);
1129        }
1130
1131        @Override
1132        public void setNotificationsEnabledForPackage(String pkg, int uid, boolean enabled) {
1133            checkCallerIsSystem();
1134
1135            setNotificationsEnabledForPackageImpl(pkg, uid, enabled);
1136        }
1137
1138        /**
1139         * Use this when you just want to know if notifications are OK for this package.
1140         */
1141        @Override
1142        public boolean areNotificationsEnabledForPackage(String pkg, int uid) {
1143            checkCallerIsSystem();
1144            return (mAppOps.checkOpNoThrow(AppOpsManager.OP_POST_NOTIFICATION, uid, pkg)
1145                    == AppOpsManager.MODE_ALLOWED);
1146        }
1147
1148        /**
1149         * System-only API for getting a list of current (i.e. not cleared) notifications.
1150         *
1151         * Requires ACCESS_NOTIFICATIONS which is signature|system.
1152         */
1153        @Override
1154        public StatusBarNotification[] getActiveNotifications(String callingPkg) {
1155            // enforce() will ensure the calling uid has the correct permission
1156            getContext().enforceCallingOrSelfPermission(
1157                    android.Manifest.permission.ACCESS_NOTIFICATIONS,
1158                    "NotificationManagerService.getActiveNotifications");
1159
1160            StatusBarNotification[] tmp = null;
1161            int uid = Binder.getCallingUid();
1162
1163            // noteOp will check to make sure the callingPkg matches the uid
1164            if (mAppOps.noteOpNoThrow(AppOpsManager.OP_ACCESS_NOTIFICATIONS, uid, callingPkg)
1165                    == AppOpsManager.MODE_ALLOWED) {
1166                synchronized (mNotificationList) {
1167                    tmp = new StatusBarNotification[mNotificationList.size()];
1168                    final int N = mNotificationList.size();
1169                    for (int i=0; i<N; i++) {
1170                        tmp[i] = mNotificationList.get(i).sbn;
1171                    }
1172                }
1173            }
1174            return tmp;
1175        }
1176
1177        /**
1178         * System-only API for getting a list of recent (cleared, no longer shown) notifications.
1179         *
1180         * Requires ACCESS_NOTIFICATIONS which is signature|system.
1181         */
1182        @Override
1183        public StatusBarNotification[] getHistoricalNotifications(String callingPkg, int count) {
1184            // enforce() will ensure the calling uid has the correct permission
1185            getContext().enforceCallingOrSelfPermission(
1186                    android.Manifest.permission.ACCESS_NOTIFICATIONS,
1187                    "NotificationManagerService.getHistoricalNotifications");
1188
1189            StatusBarNotification[] tmp = null;
1190            int uid = Binder.getCallingUid();
1191
1192            // noteOp will check to make sure the callingPkg matches the uid
1193            if (mAppOps.noteOpNoThrow(AppOpsManager.OP_ACCESS_NOTIFICATIONS, uid, callingPkg)
1194                    == AppOpsManager.MODE_ALLOWED) {
1195                synchronized (mArchive) {
1196                    tmp = mArchive.getArray(count);
1197                }
1198            }
1199            return tmp;
1200        }
1201
1202        /**
1203         * Register a listener binder directly with the notification manager.
1204         *
1205         * Only works with system callers. Apps should extend
1206         * {@link android.service.notification.NotificationListenerService}.
1207         */
1208        @Override
1209        public void registerListener(final INotificationListener listener,
1210                final ComponentName component, final int userid) {
1211            checkCallerIsSystem();
1212            mListeners.registerService(listener, component, userid);
1213        }
1214
1215        /**
1216         * Remove a listener binder directly
1217         */
1218        @Override
1219        public void unregisterListener(INotificationListener listener, int userid) {
1220            mListeners.unregisterService(listener, userid);
1221        }
1222
1223        /**
1224         * Allow an INotificationListener to simulate a "clear all" operation.
1225         *
1226         * {@see com.android.server.StatusBarManagerService.NotificationCallbacks#onClearAllNotifications}
1227         *
1228         * @param token The binder for the listener, to check that the caller is allowed
1229         */
1230        @Override
1231        public void cancelNotificationsFromListener(INotificationListener token, String[] keys) {
1232            final int callingUid = Binder.getCallingUid();
1233            final int callingPid = Binder.getCallingPid();
1234            long identity = Binder.clearCallingIdentity();
1235            try {
1236                synchronized (mNotificationList) {
1237                    final ManagedServiceInfo info = mListeners.checkServiceTokenLocked(token);
1238                    if (keys != null) {
1239                        final int N = keys.length;
1240                        for (int i = 0; i < N; i++) {
1241                            NotificationRecord r = mNotificationsByKey.get(keys[i]);
1242                            final int userId = r.sbn.getUserId();
1243                            if (userId != info.userid && userId != UserHandle.USER_ALL &&
1244                                    !mUserProfiles.isCurrentProfile(userId)) {
1245                                throw new SecurityException("Disallowed call from listener: "
1246                                        + info.service);
1247                            }
1248                            if (r != null) {
1249                                cancelNotificationFromListenerLocked(info, callingUid, callingPid,
1250                                        r.sbn.getPackageName(), r.sbn.getTag(), r.sbn.getId(),
1251                                        userId);
1252                            }
1253                        }
1254                    } else {
1255                        cancelAllLocked(callingUid, callingPid, info.userid,
1256                                REASON_LISTENER_CANCEL_ALL, info, info.supportsProfiles());
1257                    }
1258                }
1259            } finally {
1260                Binder.restoreCallingIdentity(identity);
1261            }
1262        }
1263
1264        private void cancelNotificationFromListenerLocked(ManagedServiceInfo info,
1265                int callingUid, int callingPid, String pkg, String tag, int id, int userId) {
1266            cancelNotification(callingUid, callingPid, pkg, tag, id, 0,
1267                    Notification.FLAG_ONGOING_EVENT | Notification.FLAG_FOREGROUND_SERVICE,
1268                    true,
1269                    userId, REASON_LISTENER_CANCEL, info);
1270        }
1271
1272        /**
1273         * Allow an INotificationListener to simulate clearing (dismissing) a single notification.
1274         *
1275         * {@see com.android.server.StatusBarManagerService.NotificationCallbacks#onNotificationClear}
1276         *
1277         * @param token The binder for the listener, to check that the caller is allowed
1278         */
1279        @Override
1280        public void cancelNotificationFromListener(INotificationListener token, String pkg,
1281                String tag, int id) {
1282            final int callingUid = Binder.getCallingUid();
1283            final int callingPid = Binder.getCallingPid();
1284            long identity = Binder.clearCallingIdentity();
1285            try {
1286                synchronized (mNotificationList) {
1287                    final ManagedServiceInfo info = mListeners.checkServiceTokenLocked(token);
1288                    if (info.supportsProfiles()) {
1289                        Log.e(TAG, "Ignoring deprecated cancelNotification(pkg, tag, id) "
1290                                + "from " + info.component
1291                                + " use cancelNotification(key) instead.");
1292                    } else {
1293                        cancelNotificationFromListenerLocked(info, callingUid, callingPid,
1294                                pkg, tag, id, info.userid);
1295                    }
1296                }
1297            } finally {
1298                Binder.restoreCallingIdentity(identity);
1299            }
1300        }
1301
1302        /**
1303         * Allow an INotificationListener to request the list of outstanding notifications seen by
1304         * the current user. Useful when starting up, after which point the listener callbacks
1305         * should be used.
1306         *
1307         * @param token The binder for the listener, to check that the caller is allowed
1308         */
1309        @Override
1310        public StatusBarNotification[] getActiveNotificationsFromListener(
1311                INotificationListener token, String[] keys) {
1312            synchronized (mNotificationList) {
1313                final ManagedServiceInfo info = mListeners.checkServiceTokenLocked(token);
1314                final ArrayList<StatusBarNotification> list
1315                        = new ArrayList<StatusBarNotification>();
1316                if (keys == null) {
1317                    final int N = mNotificationList.size();
1318                    for (int i=0; i<N; i++) {
1319                        StatusBarNotification sbn = mNotificationList.get(i).sbn;
1320                        if (info.enabledAndUserMatches(sbn.getUserId())) {
1321                            list.add(sbn);
1322                        }
1323                    }
1324                } else {
1325                    final int N = keys.length;
1326                    for (int i=0; i<N; i++) {
1327                        NotificationRecord r = mNotificationsByKey.get(keys[i]);
1328                        if (r != null && info.enabledAndUserMatches(r.sbn.getUserId())) {
1329                            list.add(r.sbn);
1330                        }
1331                    }
1332                }
1333                return list.toArray(new StatusBarNotification[list.size()]);
1334            }
1335        }
1336
1337        @Override
1338        public String[] getActiveNotificationKeysFromListener(INotificationListener token) {
1339            return NotificationManagerService.this.getActiveNotificationKeysFromListener(token);
1340        }
1341
1342        @Override
1343        public ZenModeConfig getZenModeConfig() {
1344            checkCallerIsSystem();
1345            return mZenModeHelper.getConfig();
1346        }
1347
1348        @Override
1349        public boolean setZenModeConfig(ZenModeConfig config) {
1350            checkCallerIsSystem();
1351            return mZenModeHelper.setConfig(config);
1352        }
1353
1354        @Override
1355        public void notifyConditions(String pkg, IConditionProvider provider,
1356                Condition[] conditions) {
1357            final ManagedServiceInfo info = mConditionProviders.checkServiceToken(provider);
1358            checkCallerIsSystemOrSameApp(pkg);
1359            final long identity = Binder.clearCallingIdentity();
1360            try {
1361                mConditionProviders.notifyConditions(pkg, info, conditions);
1362            } finally {
1363                Binder.restoreCallingIdentity(identity);
1364            }
1365        }
1366
1367        @Override
1368        public void requestZenModeConditions(IConditionListener callback, int relevance) {
1369            enforceSystemOrSystemUI("INotificationManager.requestZenModeConditions");
1370            mConditionProviders.requestZenModeConditions(callback, relevance);
1371        }
1372
1373        @Override
1374        public void setZenModeCondition(Uri conditionId) {
1375            enforceSystemOrSystemUI("INotificationManager.setZenModeCondition");
1376            mConditionProviders.setZenModeCondition(conditionId);
1377        }
1378
1379        @Override
1380        public void setAutomaticZenModeConditions(Uri[] conditionIds) {
1381            enforceSystemOrSystemUI("INotificationManager.setAutomaticZenModeConditions");
1382            mConditionProviders.setAutomaticZenModeConditions(conditionIds);
1383        }
1384
1385        @Override
1386        public Condition[] getAutomaticZenModeConditions() {
1387            enforceSystemOrSystemUI("INotificationManager.getAutomaticZenModeConditions");
1388            return mConditionProviders.getAutomaticZenModeConditions();
1389        }
1390
1391        private void enforceSystemOrSystemUI(String message) {
1392            if (isCallerSystem()) return;
1393            getContext().enforceCallingPermission(android.Manifest.permission.STATUS_BAR_SERVICE,
1394                    message);
1395        }
1396
1397        @Override
1398        protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
1399            if (getContext().checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
1400                    != PackageManager.PERMISSION_GRANTED) {
1401                pw.println("Permission Denial: can't dump NotificationManager from from pid="
1402                        + Binder.getCallingPid()
1403                        + ", uid=" + Binder.getCallingUid());
1404                return;
1405            }
1406
1407            dumpImpl(pw);
1408        }
1409    };
1410
1411    private String[] getActiveNotificationKeysFromListener(INotificationListener token) {
1412        synchronized (mNotificationList) {
1413            final ManagedServiceInfo info = mListeners.checkServiceTokenLocked(token);
1414            final ArrayList<String> keys = new ArrayList<String>();
1415            final int N = mNotificationList.size();
1416            for (int i=0; i<N; i++) {
1417                final StatusBarNotification sbn = mNotificationList.get(i).sbn;
1418                if (info.enabledAndUserMatches(sbn.getUserId())) {
1419                    keys.add(sbn.getKey());
1420                }
1421            }
1422            return keys.toArray(new String[keys.size()]);
1423        }
1424    }
1425
1426    void dumpImpl(PrintWriter pw) {
1427        pw.println("Current Notification Manager state:");
1428
1429        int N;
1430
1431        synchronized (mToastQueue) {
1432            N = mToastQueue.size();
1433            if (N > 0) {
1434                pw.println("  Toast Queue:");
1435                for (int i=0; i<N; i++) {
1436                    mToastQueue.get(i).dump(pw, "    ");
1437                }
1438                pw.println("  ");
1439            }
1440
1441        }
1442
1443        synchronized (mNotificationList) {
1444            N = mNotificationList.size();
1445            if (N > 0) {
1446                pw.println("  Notification List:");
1447                for (int i=0; i<N; i++) {
1448                    mNotificationList.get(i).dump(pw, "    ", getContext());
1449                }
1450                pw.println("  ");
1451            }
1452
1453            N = mLights.size();
1454            if (N > 0) {
1455                pw.println("  Lights List:");
1456                for (int i=0; i<N; i++) {
1457                    pw.println("    " + mLights.get(i));
1458                }
1459                pw.println("  ");
1460            }
1461
1462            pw.println("  mSoundNotification=" + mSoundNotification);
1463            pw.println("  mVibrateNotification=" + mVibrateNotification);
1464            pw.println("  mDisableNotificationAlerts=" + mDisableNotificationAlerts);
1465            pw.println("  mSystemReady=" + mSystemReady);
1466            pw.println("  mArchive=" + mArchive.toString());
1467            Iterator<StatusBarNotification> iter = mArchive.descendingIterator();
1468            int i=0;
1469            while (iter.hasNext()) {
1470                pw.println("    " + iter.next());
1471                if (++i >= 5) {
1472                    if (iter.hasNext()) pw.println("    ...");
1473                    break;
1474                }
1475            }
1476
1477            pw.println("\n  Usage Stats:");
1478            mUsageStats.dump(pw, "    ");
1479
1480            pw.println("\n  Zen Mode:");
1481            mZenModeHelper.dump(pw, "    ");
1482
1483            pw.println("\n  Notification listeners:");
1484            mListeners.dump(pw);
1485
1486            pw.println("\n  Condition providers:");
1487            mConditionProviders.dump(pw);
1488        }
1489    }
1490
1491    /**
1492     * The private API only accessible to the system process.
1493     */
1494    private final NotificationManagerInternal mInternalService = new NotificationManagerInternal() {
1495        @Override
1496        public void enqueueNotification(String pkg, String opPkg, int callingUid, int callingPid,
1497                String tag, int id, Notification notification, int[] idReceived, int userId) {
1498            enqueueNotificationInternal(pkg, opPkg, callingUid, callingPid, tag, id, notification,
1499                    idReceived, userId);
1500        }
1501    };
1502
1503    void enqueueNotificationInternal(final String pkg, final String opPkg, final int callingUid,
1504            final int callingPid, final String tag, final int id, final Notification notification,
1505            int[] idOut, int incomingUserId) {
1506        if (DBG) {
1507            Slog.v(TAG, "enqueueNotificationInternal: pkg=" + pkg + " id=" + id
1508                    + " notification=" + notification);
1509        }
1510        checkCallerIsSystemOrSameApp(pkg);
1511        final boolean isSystemNotification = isUidSystem(callingUid) || ("android".equals(pkg));
1512
1513        final int userId = ActivityManager.handleIncomingUser(callingPid,
1514                callingUid, incomingUserId, true, false, "enqueueNotification", pkg);
1515        final UserHandle user = new UserHandle(userId);
1516
1517        // Limit the number of notifications that any given package except the android
1518        // package can enqueue.  Prevents DOS attacks and deals with leaks.
1519        if (!isSystemNotification) {
1520            synchronized (mNotificationList) {
1521                int count = 0;
1522                final int N = mNotificationList.size();
1523                for (int i=0; i<N; i++) {
1524                    final NotificationRecord r = mNotificationList.get(i);
1525                    if (r.sbn.getPackageName().equals(pkg) && r.sbn.getUserId() == userId) {
1526                        count++;
1527                        if (count >= MAX_PACKAGE_NOTIFICATIONS) {
1528                            Slog.e(TAG, "Package has already posted " + count
1529                                    + " notifications.  Not showing more.  package=" + pkg);
1530                            return;
1531                        }
1532                    }
1533                }
1534            }
1535        }
1536
1537        // This conditional is a dirty hack to limit the logging done on
1538        //     behalf of the download manager without affecting other apps.
1539        if (!pkg.equals("com.android.providers.downloads")
1540                || Log.isLoggable("DownloadManager", Log.VERBOSE)) {
1541            EventLogTags.writeNotificationEnqueue(callingUid, callingPid,
1542                    pkg, id, tag, userId, notification.toString());
1543        }
1544
1545        if (pkg == null || notification == null) {
1546            throw new IllegalArgumentException("null not allowed: pkg=" + pkg
1547                    + " id=" + id + " notification=" + notification);
1548        }
1549        if (notification.icon != 0) {
1550            if (notification.contentView == null) {
1551                throw new IllegalArgumentException("contentView required: pkg=" + pkg
1552                        + " id=" + id + " notification=" + notification);
1553            }
1554        }
1555
1556        mHandler.post(new Runnable() {
1557            @Override
1558            public void run() {
1559
1560                // === Scoring ===
1561
1562                // 0. Sanitize inputs
1563                notification.priority = clamp(notification.priority, Notification.PRIORITY_MIN,
1564                        Notification.PRIORITY_MAX);
1565                // Migrate notification flags to scores
1566                if (0 != (notification.flags & Notification.FLAG_HIGH_PRIORITY)) {
1567                    if (notification.priority < Notification.PRIORITY_MAX) {
1568                        notification.priority = Notification.PRIORITY_MAX;
1569                    }
1570                } else if (SCORE_ONGOING_HIGHER &&
1571                        0 != (notification.flags & Notification.FLAG_ONGOING_EVENT)) {
1572                    if (notification.priority < Notification.PRIORITY_HIGH) {
1573                        notification.priority = Notification.PRIORITY_HIGH;
1574                    }
1575                }
1576
1577                // 1. initial score: buckets of 10, around the app
1578                int score = notification.priority * NOTIFICATION_PRIORITY_MULTIPLIER; //[-20..20]
1579
1580                // 2. Consult external heuristics (TBD)
1581
1582                // 3. Apply local rules
1583
1584                int initialScore = score;
1585                if (!mScorers.isEmpty()) {
1586                    if (DBG) Slog.v(TAG, "Initial score is " + score + ".");
1587                    for (NotificationScorer scorer : mScorers) {
1588                        try {
1589                            score = scorer.getScore(notification, score);
1590                        } catch (Throwable t) {
1591                            Slog.w(TAG, "Scorer threw on .getScore.", t);
1592                        }
1593                    }
1594                    if (DBG) Slog.v(TAG, "Final score is " + score + ".");
1595                }
1596
1597                // add extra to indicate score modified by NotificationScorer
1598                notification.extras.putBoolean(Notification.EXTRA_SCORE_MODIFIED,
1599                        score != initialScore);
1600
1601                // blocked apps
1602                if (ENABLE_BLOCKED_NOTIFICATIONS && !noteNotificationOp(pkg, callingUid)) {
1603                    if (!isSystemNotification) {
1604                        score = JUNK_SCORE;
1605                        Slog.e(TAG, "Suppressing notification from package " + pkg
1606                                + " by user request.");
1607                    }
1608                }
1609
1610                if (DBG) {
1611                    Slog.v(TAG, "Assigned score=" + score + " to " + notification);
1612                }
1613
1614                if (score < SCORE_DISPLAY_THRESHOLD) {
1615                    // Notification will be blocked because the score is too low.
1616                    return;
1617                }
1618
1619                // Is this notification intercepted by zen mode?
1620                final boolean intercept = mZenModeHelper.shouldIntercept(pkg, notification);
1621                notification.extras.putBoolean(EXTRA_INTERCEPT, intercept);
1622
1623                // Should this notification make noise, vibe, or use the LED?
1624                final boolean canInterrupt = (score >= SCORE_INTERRUPTION_THRESHOLD) && !intercept;
1625                if (DBG || intercept) Slog.v(TAG,
1626                        "pkg=" + pkg + " canInterrupt=" + canInterrupt + " intercept=" + intercept);
1627                synchronized (mNotificationList) {
1628                    final StatusBarNotification n = new StatusBarNotification(
1629                            pkg, opPkg, id, tag, callingUid, callingPid, score, notification,
1630                            user);
1631                    NotificationRecord r = new NotificationRecord(n);
1632                    NotificationRecord old = null;
1633
1634                    int index = indexOfNotificationLocked(pkg, tag, id, userId);
1635                    if (index < 0) {
1636                        mNotificationList.add(r);
1637                        mUsageStats.registerPostedByApp(r);
1638                    } else {
1639                        old = mNotificationList.get(index);
1640                        mNotificationList.set(index, r);
1641                        mUsageStats.registerUpdatedByApp(r);
1642                        // Make sure we don't lose the foreground service state.
1643                        if (old != null) {
1644                            notification.flags |=
1645                                old.getNotification().flags & Notification.FLAG_FOREGROUND_SERVICE;
1646                        }
1647                    }
1648                    if (old != null) {
1649                        mNotificationsByKey.remove(old.sbn.getKey());
1650                    }
1651                    mNotificationsByKey.put(n.getKey(), r);
1652
1653                    // Ensure if this is a foreground service that the proper additional
1654                    // flags are set.
1655                    if ((notification.flags&Notification.FLAG_FOREGROUND_SERVICE) != 0) {
1656                        notification.flags |= Notification.FLAG_ONGOING_EVENT
1657                                | Notification.FLAG_NO_CLEAR;
1658                    }
1659
1660                    final int currentUser;
1661                    final long token = Binder.clearCallingIdentity();
1662                    try {
1663                        currentUser = ActivityManager.getCurrentUser();
1664                    } finally {
1665                        Binder.restoreCallingIdentity(token);
1666                    }
1667
1668                    if (notification.icon != 0) {
1669                        if (old != null && old.statusBarKey != null) {
1670                            r.statusBarKey = old.statusBarKey;
1671                            final long identity = Binder.clearCallingIdentity();
1672                            try {
1673                                mStatusBar.updateNotification(r.statusBarKey, n);
1674                            } finally {
1675                                Binder.restoreCallingIdentity(identity);
1676                            }
1677                        } else {
1678                            final long identity = Binder.clearCallingIdentity();
1679                            try {
1680                                r.statusBarKey = mStatusBar.addNotification(n);
1681                                if ((n.getNotification().flags & Notification.FLAG_SHOW_LIGHTS) != 0
1682                                        && canInterrupt) {
1683                                    mAttentionLight.pulse();
1684                                }
1685                            } finally {
1686                                Binder.restoreCallingIdentity(identity);
1687                            }
1688                        }
1689                        // Send accessibility events only for the current user.
1690                        if (currentUser == userId) {
1691                            sendAccessibilityEvent(notification, pkg);
1692                        }
1693
1694                        mListeners.notifyPostedLocked(r.sbn);
1695                    } else {
1696                        Slog.e(TAG, "Not posting notification with icon==0: " + notification);
1697                        if (old != null && old.statusBarKey != null) {
1698                            final long identity = Binder.clearCallingIdentity();
1699                            try {
1700                                mStatusBar.removeNotification(old.statusBarKey);
1701                            } finally {
1702                                Binder.restoreCallingIdentity(identity);
1703                            }
1704
1705                            mListeners.notifyRemovedLocked(r.sbn);
1706                        }
1707                        // ATTENTION: in a future release we will bail out here
1708                        // so that we do not play sounds, show lights, etc. for invalid
1709                        // notifications
1710                        Slog.e(TAG, "WARNING: In a future release this will crash the app: "
1711                                + n.getPackageName());
1712                    }
1713
1714                    // If we're not supposed to beep, vibrate, etc. then don't.
1715                    if (!mDisableNotificationAlerts
1716                            && (!(old != null
1717                                && (notification.flags & Notification.FLAG_ONLY_ALERT_ONCE) != 0 ))
1718                            && (r.getUserId() == UserHandle.USER_ALL ||
1719                                (r.getUserId() == userId && r.getUserId() == currentUser) ||
1720                                mUserProfiles.isCurrentProfile(r.getUserId()))
1721                            && canInterrupt
1722                            && mSystemReady
1723                            && mAudioManager != null) {
1724                        if (DBG) Slog.v(TAG, "Interrupting!");
1725                        // sound
1726
1727                        // should we use the default notification sound? (indicated either by
1728                        // DEFAULT_SOUND or because notification.sound is pointing at
1729                        // Settings.System.NOTIFICATION_SOUND)
1730                        final boolean useDefaultSound =
1731                               (notification.defaults & Notification.DEFAULT_SOUND) != 0 ||
1732                                       Settings.System.DEFAULT_NOTIFICATION_URI
1733                                               .equals(notification.sound);
1734
1735                        Uri soundUri = null;
1736                        boolean hasValidSound = false;
1737
1738                        if (useDefaultSound) {
1739                            soundUri = Settings.System.DEFAULT_NOTIFICATION_URI;
1740
1741                            // check to see if the default notification sound is silent
1742                            ContentResolver resolver = getContext().getContentResolver();
1743                            hasValidSound = Settings.System.getString(resolver,
1744                                   Settings.System.NOTIFICATION_SOUND) != null;
1745                        } else if (notification.sound != null) {
1746                            soundUri = notification.sound;
1747                            hasValidSound = (soundUri != null);
1748                        }
1749
1750                        if (hasValidSound) {
1751                            boolean looping =
1752                                    (notification.flags & Notification.FLAG_INSISTENT) != 0;
1753                            int audioStreamType;
1754                            if (notification.audioStreamType >= 0) {
1755                                audioStreamType = notification.audioStreamType;
1756                            } else {
1757                                audioStreamType = DEFAULT_STREAM_TYPE;
1758                            }
1759                            mSoundNotification = r;
1760                            // do not play notifications if stream volume is 0 (typically because
1761                            // ringer mode is silent) or if there is a user of exclusive audio focus
1762                            if ((mAudioManager.getStreamVolume(audioStreamType) != 0)
1763                                    && !mAudioManager.isAudioFocusExclusive()) {
1764                                final long identity = Binder.clearCallingIdentity();
1765                                try {
1766                                    final IRingtonePlayer player =
1767                                            mAudioManager.getRingtonePlayer();
1768                                    if (player != null) {
1769                                        if (DBG) Slog.v(TAG, "Playing sound " + soundUri
1770                                                + " on stream " + audioStreamType);
1771                                        player.playAsync(soundUri, user, looping, audioStreamType);
1772                                    }
1773                                } catch (RemoteException e) {
1774                                } finally {
1775                                    Binder.restoreCallingIdentity(identity);
1776                                }
1777                            }
1778                        }
1779
1780                        // vibrate
1781                        // Does the notification want to specify its own vibration?
1782                        final boolean hasCustomVibrate = notification.vibrate != null;
1783
1784                        // new in 4.2: if there was supposed to be a sound and we're in vibrate
1785                        // mode, and no other vibration is specified, we fall back to vibration
1786                        final boolean convertSoundToVibration =
1787                                   !hasCustomVibrate
1788                                && hasValidSound
1789                                && (mAudioManager.getRingerMode()
1790                                           == AudioManager.RINGER_MODE_VIBRATE);
1791
1792                        // The DEFAULT_VIBRATE flag trumps any custom vibration AND the fallback.
1793                        final boolean useDefaultVibrate =
1794                                (notification.defaults & Notification.DEFAULT_VIBRATE) != 0;
1795
1796                        if ((useDefaultVibrate || convertSoundToVibration || hasCustomVibrate)
1797                                && !(mAudioManager.getRingerMode()
1798                                        == AudioManager.RINGER_MODE_SILENT)) {
1799                            mVibrateNotification = r;
1800
1801                            if (useDefaultVibrate || convertSoundToVibration) {
1802                                // Escalate privileges so we can use the vibrator even if the
1803                                // notifying app does not have the VIBRATE permission.
1804                                long identity = Binder.clearCallingIdentity();
1805                                try {
1806                                    mVibrator.vibrate(r.sbn.getUid(), r.sbn.getOpPkg(),
1807                                        useDefaultVibrate ? mDefaultVibrationPattern
1808                                            : mFallbackVibrationPattern,
1809                                        ((notification.flags & Notification.FLAG_INSISTENT) != 0)
1810                                                ? 0: -1, notification.audioStreamType);
1811                                } finally {
1812                                    Binder.restoreCallingIdentity(identity);
1813                                }
1814                            } else if (notification.vibrate.length > 1) {
1815                                // If you want your own vibration pattern, you need the VIBRATE
1816                                // permission
1817                                mVibrator.vibrate(r.sbn.getUid(), r.sbn.getOpPkg(),
1818                                        notification.vibrate,
1819                                    ((notification.flags & Notification.FLAG_INSISTENT) != 0)
1820                                            ? 0: -1, notification.audioStreamType);
1821                            }
1822                        }
1823                    }
1824
1825                    // light
1826                    // the most recent thing gets the light
1827                    mLights.remove(old);
1828                    if (mLedNotification == old) {
1829                        mLedNotification = null;
1830                    }
1831                    //Slog.i(TAG, "notification.lights="
1832                    //        + ((old.notification.lights.flags & Notification.FLAG_SHOW_LIGHTS)
1833                    //                  != 0));
1834                    if ((notification.flags & Notification.FLAG_SHOW_LIGHTS) != 0
1835                            && canInterrupt) {
1836                        mLights.add(r);
1837                        updateLightsLocked();
1838                    } else {
1839                        if (old != null
1840                                && ((old.getFlags() & Notification.FLAG_SHOW_LIGHTS) != 0)) {
1841                            updateLightsLocked();
1842                        }
1843                    }
1844                }
1845            }
1846        });
1847
1848        idOut[0] = id;
1849    }
1850
1851    void showNextToastLocked() {
1852        ToastRecord record = mToastQueue.get(0);
1853        while (record != null) {
1854            if (DBG) Slog.d(TAG, "Show pkg=" + record.pkg + " callback=" + record.callback);
1855            try {
1856                record.callback.show();
1857                scheduleTimeoutLocked(record);
1858                return;
1859            } catch (RemoteException e) {
1860                Slog.w(TAG, "Object died trying to show notification " + record.callback
1861                        + " in package " + record.pkg);
1862                // remove it from the list and let the process die
1863                int index = mToastQueue.indexOf(record);
1864                if (index >= 0) {
1865                    mToastQueue.remove(index);
1866                }
1867                keepProcessAliveLocked(record.pid);
1868                if (mToastQueue.size() > 0) {
1869                    record = mToastQueue.get(0);
1870                } else {
1871                    record = null;
1872                }
1873            }
1874        }
1875    }
1876
1877    void cancelToastLocked(int index) {
1878        ToastRecord record = mToastQueue.get(index);
1879        try {
1880            record.callback.hide();
1881        } catch (RemoteException e) {
1882            Slog.w(TAG, "Object died trying to hide notification " + record.callback
1883                    + " in package " + record.pkg);
1884            // don't worry about this, we're about to remove it from
1885            // the list anyway
1886        }
1887        mToastQueue.remove(index);
1888        keepProcessAliveLocked(record.pid);
1889        if (mToastQueue.size() > 0) {
1890            // Show the next one. If the callback fails, this will remove
1891            // it from the list, so don't assume that the list hasn't changed
1892            // after this point.
1893            showNextToastLocked();
1894        }
1895    }
1896
1897    private void scheduleTimeoutLocked(ToastRecord r)
1898    {
1899        mHandler.removeCallbacksAndMessages(r);
1900        Message m = Message.obtain(mHandler, MESSAGE_TIMEOUT, r);
1901        long delay = r.duration == Toast.LENGTH_LONG ? LONG_DELAY : SHORT_DELAY;
1902        mHandler.sendMessageDelayed(m, delay);
1903    }
1904
1905    private void handleTimeout(ToastRecord record)
1906    {
1907        if (DBG) Slog.d(TAG, "Timeout pkg=" + record.pkg + " callback=" + record.callback);
1908        synchronized (mToastQueue) {
1909            int index = indexOfToastLocked(record.pkg, record.callback);
1910            if (index >= 0) {
1911                cancelToastLocked(index);
1912            }
1913        }
1914    }
1915
1916    // lock on mToastQueue
1917    int indexOfToastLocked(String pkg, ITransientNotification callback)
1918    {
1919        IBinder cbak = callback.asBinder();
1920        ArrayList<ToastRecord> list = mToastQueue;
1921        int len = list.size();
1922        for (int i=0; i<len; i++) {
1923            ToastRecord r = list.get(i);
1924            if (r.pkg.equals(pkg) && r.callback.asBinder() == cbak) {
1925                return i;
1926            }
1927        }
1928        return -1;
1929    }
1930
1931    // lock on mToastQueue
1932    void keepProcessAliveLocked(int pid)
1933    {
1934        int toastCount = 0; // toasts from this pid
1935        ArrayList<ToastRecord> list = mToastQueue;
1936        int N = list.size();
1937        for (int i=0; i<N; i++) {
1938            ToastRecord r = list.get(i);
1939            if (r.pid == pid) {
1940                toastCount++;
1941            }
1942        }
1943        try {
1944            mAm.setProcessForeground(mForegroundToken, pid, toastCount > 0);
1945        } catch (RemoteException e) {
1946            // Shouldn't happen.
1947        }
1948    }
1949
1950    private final class WorkerHandler extends Handler
1951    {
1952        @Override
1953        public void handleMessage(Message msg)
1954        {
1955            switch (msg.what)
1956            {
1957                case MESSAGE_TIMEOUT:
1958                    handleTimeout((ToastRecord)msg.obj);
1959                    break;
1960                case MESSAGE_SAVE_POLICY_FILE:
1961                    handleSavePolicyFile();
1962                    break;
1963            }
1964        }
1965    }
1966
1967
1968    // Notifications
1969    // ============================================================================
1970    static int clamp(int x, int low, int high) {
1971        return (x < low) ? low : ((x > high) ? high : x);
1972    }
1973
1974    void sendAccessibilityEvent(Notification notification, CharSequence packageName) {
1975        AccessibilityManager manager = AccessibilityManager.getInstance(getContext());
1976        if (!manager.isEnabled()) {
1977            return;
1978        }
1979
1980        AccessibilityEvent event =
1981            AccessibilityEvent.obtain(AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED);
1982        event.setPackageName(packageName);
1983        event.setClassName(Notification.class.getName());
1984        event.setParcelableData(notification);
1985        CharSequence tickerText = notification.tickerText;
1986        if (!TextUtils.isEmpty(tickerText)) {
1987            event.getText().add(tickerText);
1988        }
1989
1990        manager.sendAccessibilityEvent(event);
1991    }
1992
1993    private void cancelNotificationLocked(NotificationRecord r, boolean sendDelete, int reason) {
1994        // tell the app
1995        if (sendDelete) {
1996            if (r.getNotification().deleteIntent != null) {
1997                try {
1998                    r.getNotification().deleteIntent.send();
1999                } catch (PendingIntent.CanceledException ex) {
2000                    // do nothing - there's no relevant way to recover, and
2001                    //     no reason to let this propagate
2002                    Slog.w(TAG, "canceled PendingIntent for " + r.sbn.getPackageName(), ex);
2003                }
2004            }
2005        }
2006
2007        // status bar
2008        if (r.getNotification().icon != 0) {
2009            final long identity = Binder.clearCallingIdentity();
2010            try {
2011                mStatusBar.removeNotification(r.statusBarKey);
2012            } finally {
2013                Binder.restoreCallingIdentity(identity);
2014            }
2015            r.statusBarKey = null;
2016            mListeners.notifyRemovedLocked(r.sbn);
2017        }
2018
2019        // sound
2020        if (mSoundNotification == r) {
2021            mSoundNotification = null;
2022            final long identity = Binder.clearCallingIdentity();
2023            try {
2024                final IRingtonePlayer player = mAudioManager.getRingtonePlayer();
2025                if (player != null) {
2026                    player.stopAsync();
2027                }
2028            } catch (RemoteException e) {
2029            } finally {
2030                Binder.restoreCallingIdentity(identity);
2031            }
2032        }
2033
2034        // vibrate
2035        if (mVibrateNotification == r) {
2036            mVibrateNotification = null;
2037            long identity = Binder.clearCallingIdentity();
2038            try {
2039                mVibrator.cancel();
2040            }
2041            finally {
2042                Binder.restoreCallingIdentity(identity);
2043            }
2044        }
2045
2046        // light
2047        mLights.remove(r);
2048        if (mLedNotification == r) {
2049            mLedNotification = null;
2050        }
2051
2052        // Record usage stats
2053        switch (reason) {
2054            case REASON_DELEGATE_CANCEL:
2055            case REASON_DELEGATE_CANCEL_ALL:
2056            case REASON_LISTENER_CANCEL:
2057            case REASON_LISTENER_CANCEL_ALL:
2058                mUsageStats.registerDismissedByUser(r);
2059                break;
2060            case REASON_NOMAN_CANCEL:
2061            case REASON_NOMAN_CANCEL_ALL:
2062                mUsageStats.registerRemovedByApp(r);
2063                break;
2064            case REASON_DELEGATE_CLICK:
2065                mUsageStats.registerCancelDueToClick(r);
2066                break;
2067            default:
2068                mUsageStats.registerCancelUnknown(r);
2069                break;
2070        }
2071
2072        // Save it for users of getHistoricalNotifications()
2073        mArchive.record(r.sbn);
2074    }
2075
2076    /**
2077     * Cancels a notification ONLY if it has all of the {@code mustHaveFlags}
2078     * and none of the {@code mustNotHaveFlags}.
2079     */
2080    void cancelNotification(final int callingUid, final int callingPid,
2081            final String pkg, final String tag, final int id,
2082            final int mustHaveFlags, final int mustNotHaveFlags, final boolean sendDelete,
2083            final int userId, final int reason, final ManagedServiceInfo listener) {
2084        // In enqueueNotificationInternal notifications are added by scheduling the
2085        // work on the worker handler. Hence, we also schedule the cancel on this
2086        // handler to avoid a scenario where an add notification call followed by a
2087        // remove notification call ends up in not removing the notification.
2088        mHandler.post(new Runnable() {
2089            @Override
2090            public void run() {
2091                EventLogTags.writeNotificationCancel(callingUid, callingPid, pkg, id, tag, userId,
2092                        mustHaveFlags, mustNotHaveFlags, reason,
2093                        listener == null ? null : listener.component.toShortString());
2094
2095                synchronized (mNotificationList) {
2096                    int index = indexOfNotificationLocked(pkg, tag, id, userId);
2097                    if (index >= 0) {
2098                        NotificationRecord r = mNotificationList.get(index);
2099
2100                        // Ideally we'd do this in the caller of this method. However, that would
2101                        // require the caller to also find the notification.
2102                        if (reason == REASON_DELEGATE_CLICK) {
2103                            mUsageStats.registerClickedByUser(r);
2104                        }
2105
2106                        if ((r.getNotification().flags & mustHaveFlags) != mustHaveFlags) {
2107                            return;
2108                        }
2109                        if ((r.getNotification().flags & mustNotHaveFlags) != 0) {
2110                            return;
2111                        }
2112
2113                        mNotificationList.remove(index);
2114                        mNotificationsByKey.remove(r.sbn.getKey());
2115
2116                        cancelNotificationLocked(r, sendDelete, reason);
2117                        updateLightsLocked();
2118                    }
2119                }
2120            }
2121        });
2122    }
2123
2124    /**
2125     * Determine whether the userId applies to the notification in question, either because
2126     * they match exactly, or one of them is USER_ALL (which is treated as a wildcard).
2127     */
2128    private boolean notificationMatchesUserId(NotificationRecord r, int userId) {
2129        return
2130                // looking for USER_ALL notifications? match everything
2131                   userId == UserHandle.USER_ALL
2132                // a notification sent to USER_ALL matches any query
2133                || r.getUserId() == UserHandle.USER_ALL
2134                // an exact user match
2135                || r.getUserId() == userId;
2136    }
2137
2138    /**
2139     * Determine whether the userId applies to the notification in question, either because
2140     * they match exactly, or one of them is USER_ALL (which is treated as a wildcard) or
2141     * because it matches one of the users profiles.
2142     */
2143    private boolean notificationMatchesCurrentProfiles(NotificationRecord r, int userId) {
2144        return notificationMatchesUserId(r, userId)
2145                || mUserProfiles.isCurrentProfile(r.getUserId());
2146    }
2147
2148    /**
2149     * Cancels all notifications from a given package that have all of the
2150     * {@code mustHaveFlags}.
2151     */
2152    boolean cancelAllNotificationsInt(int callingUid, int callingPid, String pkg, int mustHaveFlags,
2153            int mustNotHaveFlags, boolean doit, int userId, int reason,
2154            ManagedServiceInfo listener) {
2155        EventLogTags.writeNotificationCancelAll(callingUid, callingPid,
2156                pkg, userId, mustHaveFlags, mustNotHaveFlags, reason,
2157                listener == null ? null : listener.component.toShortString());
2158
2159        synchronized (mNotificationList) {
2160            final int N = mNotificationList.size();
2161            boolean canceledSomething = false;
2162            for (int i = N-1; i >= 0; --i) {
2163                NotificationRecord r = mNotificationList.get(i);
2164                if (!notificationMatchesUserId(r, userId)) {
2165                    continue;
2166                }
2167                // Don't remove notifications to all, if there's no package name specified
2168                if (r.getUserId() == UserHandle.USER_ALL && pkg == null) {
2169                    continue;
2170                }
2171                if ((r.getFlags() & mustHaveFlags) != mustHaveFlags) {
2172                    continue;
2173                }
2174                if ((r.getFlags() & mustNotHaveFlags) != 0) {
2175                    continue;
2176                }
2177                if (pkg != null && !r.sbn.getPackageName().equals(pkg)) {
2178                    continue;
2179                }
2180                canceledSomething = true;
2181                if (!doit) {
2182                    return true;
2183                }
2184                mNotificationList.remove(i);
2185                mNotificationsByKey.remove(r.sbn.getKey());
2186                cancelNotificationLocked(r, false, reason);
2187            }
2188            if (canceledSomething) {
2189                updateLightsLocked();
2190            }
2191            return canceledSomething;
2192        }
2193    }
2194
2195    void cancelAllLocked(int callingUid, int callingPid, int userId, int reason,
2196            ManagedServiceInfo listener, boolean includeCurrentProfiles) {
2197        EventLogTags.writeNotificationCancelAll(callingUid, callingPid,
2198                null, userId, 0, 0, reason,
2199                listener == null ? null : listener.component.toShortString());
2200
2201        final int N = mNotificationList.size();
2202        for (int i=N-1; i>=0; i--) {
2203            NotificationRecord r = mNotificationList.get(i);
2204            if (includeCurrentProfiles) {
2205                if (!notificationMatchesCurrentProfiles(r, userId)) {
2206                    continue;
2207                }
2208            } else {
2209                if (!notificationMatchesUserId(r, userId)) {
2210                    continue;
2211                }
2212            }
2213
2214            if ((r.getFlags() & (Notification.FLAG_ONGOING_EVENT
2215                            | Notification.FLAG_NO_CLEAR)) == 0) {
2216                mNotificationList.remove(i);
2217                mNotificationsByKey.remove(r.sbn.getKey());
2218                cancelNotificationLocked(r, true, reason);
2219            }
2220        }
2221        updateLightsLocked();
2222    }
2223
2224    // lock on mNotificationList
2225    void updateLightsLocked()
2226    {
2227        // handle notification lights
2228        if (mLedNotification == null) {
2229            // get next notification, if any
2230            int n = mLights.size();
2231            if (n > 0) {
2232                mLedNotification = mLights.get(n-1);
2233            }
2234        }
2235
2236        // Don't flash while we are in a call or screen is on
2237        if (mLedNotification == null || mInCall || mScreenOn) {
2238            mNotificationLight.turnOff();
2239        } else {
2240            final Notification ledno = mLedNotification.sbn.getNotification();
2241            int ledARGB = ledno.ledARGB;
2242            int ledOnMS = ledno.ledOnMS;
2243            int ledOffMS = ledno.ledOffMS;
2244            if ((ledno.defaults & Notification.DEFAULT_LIGHTS) != 0) {
2245                ledARGB = mDefaultNotificationColor;
2246                ledOnMS = mDefaultNotificationLedOn;
2247                ledOffMS = mDefaultNotificationLedOff;
2248            }
2249            if (mNotificationPulseEnabled) {
2250                // pulse repeatedly
2251                mNotificationLight.setFlashing(ledARGB, Light.LIGHT_FLASH_TIMED,
2252                        ledOnMS, ledOffMS);
2253            }
2254        }
2255    }
2256
2257    // lock on mNotificationList
2258    int indexOfNotificationLocked(String pkg, String tag, int id, int userId)
2259    {
2260        ArrayList<NotificationRecord> list = mNotificationList;
2261        final int len = list.size();
2262        for (int i=0; i<len; i++) {
2263            NotificationRecord r = list.get(i);
2264            if (!notificationMatchesUserId(r, userId) || r.sbn.getId() != id) {
2265                continue;
2266            }
2267            if (tag == null) {
2268                if (r.sbn.getTag() != null) {
2269                    continue;
2270                }
2271            } else {
2272                if (!tag.equals(r.sbn.getTag())) {
2273                    continue;
2274                }
2275            }
2276            if (r.sbn.getPackageName().equals(pkg)) {
2277                return i;
2278            }
2279        }
2280        return -1;
2281    }
2282
2283    private void updateNotificationPulse() {
2284        synchronized (mNotificationList) {
2285            updateLightsLocked();
2286        }
2287    }
2288
2289    private static boolean isUidSystem(int uid) {
2290        final int appid = UserHandle.getAppId(uid);
2291        return (appid == Process.SYSTEM_UID || appid == Process.PHONE_UID || uid == 0);
2292    }
2293
2294    private static boolean isCallerSystem() {
2295        return isUidSystem(Binder.getCallingUid());
2296    }
2297
2298    private static void checkCallerIsSystem() {
2299        if (isCallerSystem()) {
2300            return;
2301        }
2302        throw new SecurityException("Disallowed call for uid " + Binder.getCallingUid());
2303    }
2304
2305    private static void checkCallerIsSystemOrSameApp(String pkg) {
2306        if (isCallerSystem()) {
2307            return;
2308        }
2309        final int uid = Binder.getCallingUid();
2310        try {
2311            ApplicationInfo ai = AppGlobals.getPackageManager().getApplicationInfo(
2312                    pkg, 0, UserHandle.getCallingUserId());
2313            if (!UserHandle.isSameApp(ai.uid, uid)) {
2314                throw new SecurityException("Calling uid " + uid + " gave package"
2315                        + pkg + " which is owned by uid " + ai.uid);
2316            }
2317        } catch (RemoteException re) {
2318            throw new SecurityException("Unknown package " + pkg + "\n" + re);
2319        }
2320    }
2321
2322    public class NotificationListeners extends ManagedServices {
2323
2324        public NotificationListeners() {
2325            super(getContext(), mHandler, mNotificationList, mUserProfiles);
2326        }
2327
2328        @Override
2329        protected Config getConfig() {
2330            Config c = new Config();
2331            c.caption = "notification listener";
2332            c.serviceInterface = NotificationListenerService.SERVICE_INTERFACE;
2333            c.secureSettingName = Settings.Secure.ENABLED_NOTIFICATION_LISTENERS;
2334            c.bindPermission = android.Manifest.permission.BIND_NOTIFICATION_LISTENER_SERVICE;
2335            c.settingsAction = Settings.ACTION_NOTIFICATION_LISTENER_SETTINGS;
2336            c.clientLabel = R.string.notification_listener_binding_label;
2337            return c;
2338        }
2339
2340        @Override
2341        protected IInterface asInterface(IBinder binder) {
2342            return INotificationListener.Stub.asInterface(binder);
2343        }
2344
2345        @Override
2346        public void onServiceAdded(ManagedServiceInfo info) {
2347            final INotificationListener listener = (INotificationListener) info.service;
2348            final String[] keys = getActiveNotificationKeysFromListener(listener);
2349            try {
2350                listener.onListenerConnected(keys);
2351            } catch (RemoteException e) {
2352                // we tried
2353            }
2354        }
2355
2356        /**
2357         * asynchronously notify all listeners about a new notification
2358         */
2359        public void notifyPostedLocked(StatusBarNotification sbn) {
2360            // make a copy in case changes are made to the underlying Notification object
2361            final StatusBarNotification sbnClone = sbn.clone();
2362            for (final ManagedServiceInfo info : mServices) {
2363                mHandler.post(new Runnable() {
2364                    @Override
2365                    public void run() {
2366                        notifyPostedIfUserMatch(info, sbnClone);
2367                    }
2368                });
2369            }
2370        }
2371
2372        /**
2373         * asynchronously notify all listeners about a removed notification
2374         */
2375        public void notifyRemovedLocked(StatusBarNotification sbn) {
2376            // make a copy in case changes are made to the underlying Notification object
2377            // NOTE: this copy is lightweight: it doesn't include heavyweight parts of the
2378            // notification
2379            final StatusBarNotification sbnLight = sbn.cloneLight();
2380            for (ManagedServiceInfo serviceInfo : mServices) {
2381                final ManagedServiceInfo info = (ManagedServiceInfo) serviceInfo;
2382                mHandler.post(new Runnable() {
2383                    @Override
2384                    public void run() {
2385                        notifyRemovedIfUserMatch(info, sbnLight);
2386                    }
2387                });
2388            }
2389        }
2390
2391        private void notifyPostedIfUserMatch(ManagedServiceInfo info, StatusBarNotification sbn) {
2392            if (!info.enabledAndUserMatches(sbn.getUserId())) {
2393                return;
2394            }
2395            final INotificationListener listener = (INotificationListener)info.service;
2396            try {
2397                listener.onNotificationPosted(sbn);
2398            } catch (RemoteException ex) {
2399                Log.e(TAG, "unable to notify listener (posted): " + listener, ex);
2400            }
2401        }
2402
2403        private void notifyRemovedIfUserMatch(ManagedServiceInfo info, StatusBarNotification sbn) {
2404            if (!info.enabledAndUserMatches(sbn.getUserId())) {
2405                return;
2406            }
2407            final INotificationListener listener = (INotificationListener)info.service;
2408            try {
2409                listener.onNotificationRemoved(sbn);
2410            } catch (RemoteException ex) {
2411                Log.e(TAG, "unable to notify listener (removed): " + listener, ex);
2412            }
2413        }
2414    }
2415}
2416