services/core/java/com/android/server/am/ServiceRecord.java

   1 /*
   2  * Copyright (C) 2006 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
  17 package com.android.server.am;
  18
  19 import com.android.internal.app.ProcessStats;
  20 import com.android.internal.os.BatteryStatsImpl;
  21 import com.android.server.LocalServices;
  22 import com.android.server.notification.NotificationManagerInternal;
  23
  24 import android.app.INotificationManager;
  25 import android.app.Notification;
  26 import android.app.NotificationManager;
  27 import android.app.PendingIntent;
  28 import android.content.ComponentName;
  29 import android.content.Context;
  30 import android.content.Intent;
  31 import android.content.pm.ApplicationInfo;
  32 import android.content.pm.PackageManager;
  33 import android.content.pm.ServiceInfo;
  34 import android.net.Uri;
  35 import android.os.Binder;
  36 import android.os.IBinder;
  37 import android.os.RemoteException;
  38 import android.os.SystemClock;
  39 import android.os.UserHandle;
  40 import android.provider.Settings;
  41 import android.util.ArrayMap;
  42 import android.util.Slog;
  43 import android.util.TimeUtils;
  44
  45 import java.io.PrintWriter;
  46 import java.util.ArrayList;
  47 import java.util.List;
  48 import java.util.Objects;
  49
  50 /**
  51  * A running application service.
  52  */
  53 final class ServiceRecord extends Binder {
  54     // Maximum number of delivery attempts before giving up.
  55     static final int MAX_DELIVERY_COUNT = 3;
  56
  57     // Maximum number of times it can fail during execution before giving up.
  58     static final int MAX_DONE_EXECUTING_COUNT = 6;
  59
  60     final ActivityManagerService ams;
  61     final BatteryStatsImpl.Uid.Pkg.Serv stats;
  62     final ComponentName name; // service component.
  63     final String shortName; // name.flattenToShortString().
  64     final Intent.FilterComparison intent;
  65                             // original intent used to find service.
  66     final ServiceInfo serviceInfo;
  67                             // all information about the service.
  68     final ApplicationInfo appInfo;
  69                             // information about service's app.
  70     final int userId;       // user that this service is running as
  71     final String packageName; // the package implementing intent's component
  72     final String processName; // process where this component wants to run
  73     final String permission;// permission needed to access service
  74     final boolean exported; // from ServiceInfo.exported
  75     final Runnable restarter; // used to schedule retries of starting the service
  76     final long createTime;  // when this service was created
  77     final ArrayMap<Intent.FilterComparison, IntentBindRecord> bindings
  78             = new ArrayMap<Intent.FilterComparison, IntentBindRecord>();
  79                             // All active bindings to the service.
  80     final ArrayMap<IBinder, ArrayList<ConnectionRecord>> connections
  81             = new ArrayMap<IBinder, ArrayList<ConnectionRecord>>();
  82                             // IBinder -> ConnectionRecord of all bound clients
  83
  84     ProcessRecord app;      // where this service is running or null.
  85     ProcessRecord isolatedProc; // keep track of isolated process, if requested
  86     ProcessStats.ServiceState tracker; // tracking service execution, may be null
  87     ProcessStats.ServiceState restartTracker; // tracking service restart
  88     boolean delayed;        // are we waiting to start this service in the background?
  89     boolean isForeground;   // is service currently in foreground mode?
  90     int foregroundId;       // Notification ID of last foreground req.
  91     Notification foregroundNoti; // Notification record of foreground state.
  92     long lastActivity;      // last time there was some activity on the service.
  93     long startingBgTimeout;  // time at which we scheduled this for a delayed start.
  94     boolean startRequested; // someone explicitly called start?
  95     boolean delayedStop;    // service has been stopped but is in a delayed start?
  96     boolean stopIfKilled;   // last onStart() said to stop if service killed?
  97     boolean callStart;      // last onStart() has asked to alway be called on restart.
  98     int executeNesting;     // number of outstanding operations keeping foreground.
  99     boolean executeFg;      // should we be executing in the foreground?
 100     long executingStart;    // start time of last execute request.
 101     boolean createdFromFg;  // was this service last created due to a foreground process call?
 102     int crashCount;         // number of times proc has crashed with service running
 103     int totalRestartCount;  // number of times we have had to restart.
 104     int restartCount;       // number of restarts performed in a row.
 105     long restartDelay;      // delay until next restart attempt.
 106     long restartTime;       // time of last restart.
 107     long nextRestartTime;   // time when restartDelay will expire.
 108     boolean destroying;     // set when we have started destroying the service
 109     long destroyTime;       // time at which destory was initiated.
 110
 111     String stringName;      // caching of toString
 112
 113     private int lastStartId;    // identifier of most recent start request.
 114
 115     static class StartItem {
 116         final ServiceRecord sr;
 117         final boolean taskRemoved;
 118         final int id;
 119         final Intent intent;
 120         final ActivityManagerService.NeededUriGrants neededGrants;
 121         long deliveredTime;
 122         int deliveryCount;
 123         int doneExecutingCount;
 124         UriPermissionOwner uriPermissions;
 125
 126         String stringName;      // caching of toString
 127
 128         StartItem(ServiceRecord _sr, boolean _taskRemoved, int _id, Intent _intent,
 129                 ActivityManagerService.NeededUriGrants _neededGrants) {
 130             sr = _sr;
 131             taskRemoved = _taskRemoved;
 132             id = _id;
 133             intent = _intent;
 134             neededGrants = _neededGrants;
 135         }
 136
 137         UriPermissionOwner getUriPermissionsLocked() {
 138             if (uriPermissions == null) {
 139                 uriPermissions = new UriPermissionOwner(sr.ams, this);
 140             }
 141             return uriPermissions;
 142         }
 143
 144         void removeUriPermissionsLocked() {
 145             if (uriPermissions != null) {
 146                 uriPermissions.removeUriPermissionsLocked();
 147                 uriPermissions = null;
 148             }
 149         }
 150
 151         public String toString() {
 152             if (stringName != null) {
 153                 return stringName;
 154             }
 155             StringBuilder sb = new StringBuilder(128);
 156             sb.append("ServiceRecord{")
 157                 .append(Integer.toHexString(System.identityHashCode(sr)))
 158                 .append(' ').append(sr.shortName)
 159                 .append(" StartItem ")
 160                 .append(Integer.toHexString(System.identityHashCode(this)))
 161                 .append(" id=").append(id).append('}');
 162             return stringName = sb.toString();
 163         }
 164     }
 165
 166     final ArrayList<StartItem> deliveredStarts = new ArrayList<StartItem>();
 167                             // start() arguments which been delivered.
 168     final ArrayList<StartItem> pendingStarts = new ArrayList<StartItem>();
 169                             // start() arguments that haven't yet been delivered.
 170
 171     void dumpStartList(PrintWriter pw, String prefix, List<StartItem> list, long now) {
 172         final int N = list.size();
 173         for (int i=0; i<N; i++) {
 174             StartItem si = list.get(i);
 175             pw.print(prefix); pw.print("#"); pw.print(i);
 176                     pw.print(" id="); pw.print(si.id);
 177                     if (now != 0) {
 178                         pw.print(" dur=");
 179                         TimeUtils.formatDuration(si.deliveredTime, now, pw);
 180                     }
 181                     if (si.deliveryCount != 0) {
 182                         pw.print(" dc="); pw.print(si.deliveryCount);
 183                     }
 184                     if (si.doneExecutingCount != 0) {
 185                         pw.print(" dxc="); pw.print(si.doneExecutingCount);
 186                     }
 187                     pw.println("");
 188             pw.print(prefix); pw.print("  intent=");
 189                     if (si.intent != null) pw.println(si.intent.toString());
 190                     else pw.println("null");
 191             if (si.neededGrants != null) {
 192                 pw.print(prefix); pw.print("  neededGrants=");
 193                         pw.println(si.neededGrants);
 194             }
 195             if (si.uriPermissions != null) {
 196                 si.uriPermissions.dump(pw, prefix);
 197             }
 198         }
 199     }
 200
 201     void dump(PrintWriter pw, String prefix) {
 202         pw.print(prefix); pw.print("intent={");
 203                 pw.print(intent.getIntent().toShortString(false, true, false, true));
 204                 pw.println('}');
 205         pw.print(prefix); pw.print("packageName="); pw.println(packageName);
 206         pw.print(prefix); pw.print("processName="); pw.println(processName);
 207         if (permission != null) {
 208             pw.print(prefix); pw.print("permission="); pw.println(permission);
 209         }
 210         long now = SystemClock.uptimeMillis();
 211         long nowReal = SystemClock.elapsedRealtime();
 212         if (appInfo != null) {
 213             pw.print(prefix); pw.print("baseDir="); pw.println(appInfo.sourceDir);
 214             if (!Objects.equals(appInfo.sourceDir, appInfo.publicSourceDir)) {
 215                 pw.print(prefix); pw.print("resDir="); pw.println(appInfo.publicSourceDir);
 216             }
 217             pw.print(prefix); pw.print("dataDir="); pw.println(appInfo.dataDir);
 218         }
 219         pw.print(prefix); pw.print("app="); pw.println(app);
 220         if (isolatedProc != null) {
 221             pw.print(prefix); pw.print("isolatedProc="); pw.println(isolatedProc);
 222         }
 223         if (delayed) {
 224             pw.print(prefix); pw.print("delayed="); pw.println(delayed);
 225         }
 226         if (isForeground || foregroundId != 0) {
 227             pw.print(prefix); pw.print("isForeground="); pw.print(isForeground);
 228                     pw.print(" foregroundId="); pw.print(foregroundId);
 229                     pw.print(" foregroundNoti="); pw.println(foregroundNoti);
 230         }
 231         pw.print(prefix); pw.print("createTime=");
 232                 TimeUtils.formatDuration(createTime, nowReal, pw);
 233                 pw.print(" startingBgTimeout=");
 234                 TimeUtils.formatDuration(startingBgTimeout, now, pw);
 235                 pw.println();
 236         pw.print(prefix); pw.print("lastActivity=");
 237                 TimeUtils.formatDuration(lastActivity, now, pw);
 238                 pw.print(" restartTime=");
 239                 TimeUtils.formatDuration(restartTime, now, pw);
 240                 pw.print(" createdFromFg="); pw.println(createdFromFg);
 241         if (startRequested || delayedStop || lastStartId != 0) {
 242             pw.print(prefix); pw.print("startRequested="); pw.print(startRequested);
 243                     pw.print(" delayedStop="); pw.print(delayedStop);
 244                     pw.print(" stopIfKilled="); pw.print(stopIfKilled);
 245                     pw.print(" callStart="); pw.print(callStart);
 246                     pw.print(" lastStartId="); pw.println(lastStartId);
 247         }
 248         if (executeNesting != 0) {
 249             pw.print(prefix); pw.print("executeNesting="); pw.print(executeNesting);
 250                     pw.print(" executeFg="); pw.print(executeFg);
 251                     pw.print(" executingStart=");
 252                     TimeUtils.formatDuration(executingStart, now, pw);
 253                     pw.println();
 254         }
 255         if (destroying || destroyTime != 0) {
 256             pw.print(prefix); pw.print("destroying="); pw.print(destroying);
 257                     pw.print(" destroyTime=");
 258                     TimeUtils.formatDuration(destroyTime, now, pw);
 259                     pw.println();
 260         }
 261         if (crashCount != 0 || restartCount != 0
 262                 || restartDelay != 0 || nextRestartTime != 0) {
 263             pw.print(prefix); pw.print("restartCount="); pw.print(restartCount);
 264                     pw.print(" restartDelay=");
 265                     TimeUtils.formatDuration(restartDelay, now, pw);
 266                     pw.print(" nextRestartTime=");
 267                     TimeUtils.formatDuration(nextRestartTime, now, pw);
 268                     pw.print(" crashCount="); pw.println(crashCount);
 269         }
 270         if (deliveredStarts.size() > 0) {
 271             pw.print(prefix); pw.println("Delivered Starts:");
 272             dumpStartList(pw, prefix, deliveredStarts, now);
 273         }
 274         if (pendingStarts.size() > 0) {
 275             pw.print(prefix); pw.println("Pending Starts:");
 276             dumpStartList(pw, prefix, pendingStarts, 0);
 277         }
 278         if (bindings.size() > 0) {
 279             pw.print(prefix); pw.println("Bindings:");
 280             for (int i=0; i<bindings.size(); i++) {
 281                 IntentBindRecord b = bindings.valueAt(i);
 282                 pw.print(prefix); pw.print("* IntentBindRecord{");
 283                         pw.print(Integer.toHexString(System.identityHashCode(b)));
 284                         if ((b.collectFlags()&Context.BIND_AUTO_CREATE) != 0) {
 285                             pw.append(" CREATE");
 286                         }
 287                         pw.println("}:");
 288                 b.dumpInService(pw, prefix + "  ");
 289             }
 290         }
 291         if (connections.size() > 0) {
 292             pw.print(prefix); pw.println("All Connections:");
 293             for (int conni=0; conni<connections.size(); conni++) {
 294                 ArrayList<ConnectionRecord> c = connections.valueAt(conni);
 295                 for (int i=0; i<c.size(); i++) {
 296                     pw.print(prefix); pw.print("  "); pw.println(c.get(i));
 297                 }
 298             }
 299         }
 300     }
 301
 302     ServiceRecord(ActivityManagerService ams,
 303             BatteryStatsImpl.Uid.Pkg.Serv servStats, ComponentName name,
 304             Intent.FilterComparison intent, ServiceInfo sInfo, boolean callerIsFg,
 305             Runnable restarter) {
 306         this.ams = ams;
 307         this.stats = servStats;
 308         this.name = name;
 309         shortName = name.flattenToShortString();
 310         this.intent = intent;
 311         serviceInfo = sInfo;
 312         appInfo = sInfo.applicationInfo;
 313         packageName = sInfo.applicationInfo.packageName;
 314         processName = sInfo.processName;
 315         permission = sInfo.permission;
 316         exported = sInfo.exported;
 317         this.restarter = restarter;
 318         createTime = SystemClock.elapsedRealtime();
 319         lastActivity = SystemClock.uptimeMillis();
 320         userId = UserHandle.getUserId(appInfo.uid);
 321         createdFromFg = callerIsFg;
 322     }
 323
 324     public ProcessStats.ServiceState getTracker() {
 325         if (tracker != null) {
 326             return tracker;
 327         }
 328         if ((serviceInfo.applicationInfo.flags&ApplicationInfo.FLAG_PERSISTENT) == 0) {
 329             tracker = ams.mProcessStats.getServiceStateLocked(serviceInfo.packageName,
 330                     serviceInfo.applicationInfo.uid, serviceInfo.applicationInfo.versionCode,
 331                     serviceInfo.processName, serviceInfo.name);
 332             tracker.applyNewOwner(this);
 333         }
 334         return tracker;
 335     }
 336
 337     public void forceClearTracker() {
 338         if (tracker != null) {
 339             tracker.clearCurrentOwner(this, true);
 340             tracker = null;
 341         }
 342     }
 343
 344     public void makeRestarting(int memFactor, long now) {
 345         if (restartTracker == null) {
 346             if ((serviceInfo.applicationInfo.flags&ApplicationInfo.FLAG_PERSISTENT) == 0) {
 347                 restartTracker = ams.mProcessStats.getServiceStateLocked(serviceInfo.packageName,
 348                         serviceInfo.applicationInfo.uid, serviceInfo.applicationInfo.versionCode,
 349                         serviceInfo.processName, serviceInfo.name);
 350             }
 351             if (restartTracker == null) {
 352                 return;
 353             }
 354         }
 355         restartTracker.setRestarting(true, memFactor, now);
 356     }
 357
 358     public AppBindRecord retrieveAppBindingLocked(Intent intent,
 359             ProcessRecord app) {
 360         Intent.FilterComparison filter = new Intent.FilterComparison(intent);
 361         IntentBindRecord i = bindings.get(filter);
 362         if (i == null) {
 363             i = new IntentBindRecord(this, filter);
 364             bindings.put(filter, i);
 365         }
 366         AppBindRecord a = i.apps.get(app);
 367         if (a != null) {
 368             return a;
 369         }
 370         a = new AppBindRecord(this, i, app);
 371         i.apps.put(app, a);
 372         return a;
 373     }
 374
 375     public boolean hasAutoCreateConnections() {
 376         // XXX should probably keep a count of the number of auto-create
 377         // connections directly in the service.
 378         for (int conni=connections.size()-1; conni>=0; conni--) {
 379             ArrayList<ConnectionRecord> cr = connections.valueAt(conni);
 380             for (int i=0; i<cr.size(); i++) {
 381                 if ((cr.get(i).flags&Context.BIND_AUTO_CREATE) != 0) {
 382                     return true;
 383                 }
 384             }
 385         }
 386         return false;
 387     }
 388
 389     public void resetRestartCounter() {
 390         restartCount = 0;
 391         restartDelay = 0;
 392         restartTime = 0;
 393     }
 394
 395     public StartItem findDeliveredStart(int id, boolean remove) {
 396         final int N = deliveredStarts.size();
 397         for (int i=0; i<N; i++) {
 398             StartItem si = deliveredStarts.get(i);
 399             if (si.id == id) {
 400                 if (remove) deliveredStarts.remove(i);
 401                 return si;
 402             }
 403         }
 404
 405         return null;
 406     }
 407
 408     public int getLastStartId() {
 409         return lastStartId;
 410     }
 411
 412     public int makeNextStartId() {
 413         lastStartId++;
 414         if (lastStartId < 1) {
 415             lastStartId = 1;
 416         }
 417         return lastStartId;
 418     }
 419
 420     public void postNotification() {
 421         final int appUid = appInfo.uid;
 422         final int appPid = app.pid;
 423         if (foregroundId != 0 && foregroundNoti != null) {
 424             // Do asynchronous communication with notification manager to
 425             // avoid deadlocks.
 426             final String localPackageName = packageName;
 427             final int localForegroundId = foregroundId;
 428             final Notification localForegroundNoti = foregroundNoti;
 429             ams.mHandler.post(new Runnable() {
 430                 public void run() {
 431                     NotificationManagerInternal nm = LocalServices.getService(
 432                             NotificationManagerInternal.class);
 433                     if (nm == null) {
 434                         return;
 435                     }
 436                     try {
 437                         if (localForegroundNoti.icon == 0) {
 438                             // It is not correct for the caller to supply a notification
 439                             // icon, but this used to be able to slip through, so for
 440                             // those dirty apps give it the app's icon.
 441                             localForegroundNoti.icon = appInfo.icon;
 442
 443                             // Do not allow apps to present a sneaky invisible content view either.
 444                             localForegroundNoti.contentView = null;
 445                             localForegroundNoti.bigContentView = null;
 446                             CharSequence appName = appInfo.loadLabel(
 447                                     ams.mContext.getPackageManager());
 448                             if (appName == null) {
 449                                 appName = appInfo.packageName;
 450                             }
 451                             Context ctx = null;
 452                             try {
 453                                 ctx = ams.mContext.createPackageContext(
 454                                         appInfo.packageName, 0);
 455                                 Intent runningIntent = new Intent(
 456                                         Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
 457                                 runningIntent.setData(Uri.fromParts("package",
 458                                         appInfo.packageName, null));
 459                                 PendingIntent pi = PendingIntent.getActivity(ams.mContext, 0,
 460                                         runningIntent, PendingIntent.FLAG_UPDATE_CURRENT);
 461                                 localForegroundNoti.color = ams.mContext.getResources().getColor(
 462                                         com.android.internal
 463                                                 .R.color.system_notification_accent_color);
 464                                 localForegroundNoti.setLatestEventInfo(ctx,
 465                                         ams.mContext.getString(
 466                                                 com.android.internal.R.string
 467                                                         .app_running_notification_title,
 468                                                 appName),
 469                                         ams.mContext.getString(
 470                                                 com.android.internal.R.string
 471                                                         .app_running_notification_text,
 472                                                 appName),
 473                                         pi);
 474                             } catch (PackageManager.NameNotFoundException e) {
 475                                 localForegroundNoti.icon = 0;
 476                             }
 477                         }
 478                         if (localForegroundNoti.icon == 0) {
 479                             // Notifications whose icon is 0 are defined to not show
 480                             // a notification, silently ignoring it.  We don't want to
 481                             // just ignore it, we want to prevent the service from
 482                             // being foreground.
 483                             throw new RuntimeException("icon must be non-zero");
 484                         }
 485                         int[] outId = new int[1];
 486                         nm.enqueueNotification(localPackageName, localPackageName,
 487                                 appUid, appPid, null, localForegroundId, localForegroundNoti,
 488                                 outId, userId);
 489                     } catch (RuntimeException e) {
 490                         Slog.w(ActivityManagerService.TAG,
 491                                 "Error showing notification for service", e);
 492                         // If it gave us a garbage notification, it doesn't
 493                         // get to be foreground.
 494                         ams.setServiceForeground(name, ServiceRecord.this,
 495                                 0, null, true);
 496                         ams.crashApplication(appUid, appPid, localPackageName,
 497                                 "Bad notification for startForeground: " + e);
 498                     }
 499                 }
 500             });
 501         }
 502     }
 503
 504     public void cancelNotification() {
 505         if (foregroundId != 0) {
 506             // Do asynchronous communication with notification manager to
 507             // avoid deadlocks.
 508             final String localPackageName = packageName;
 509             final int localForegroundId = foregroundId;
 510             ams.mHandler.post(new Runnable() {
 511                 public void run() {
 512                     INotificationManager inm = NotificationManager.getService();
 513                     if (inm == null) {
 514                         return;
 515                     }
 516                     try {
 517                         inm.cancelNotificationWithTag(localPackageName, null,
 518                                 localForegroundId, userId);
 519                     } catch (RuntimeException e) {
 520                         Slog.w(ActivityManagerService.TAG,
 521                                 "Error canceling notification for service", e);
 522                     } catch (RemoteException e) {
 523                     }
 524                 }
 525             });
 526         }
 527     }
 528
 529     public void stripForegroundServiceFlagFromNotification() {
 530         if (foregroundId == 0) {
 531             return;
 532         }
 533
 534         final int localForegroundId = foregroundId;
 535         final int localUserId = userId;
 536         final String localPackageName = packageName;
 537
 538         // Do asynchronous communication with notification manager to
 539         // avoid deadlocks.
 540         ams.mHandler.post(new Runnable() {
 541             @Override
 542             public void run() {
 543                 NotificationManagerInternal nmi = LocalServices.getService(
 544                         NotificationManagerInternal.class);
 545                 if (nmi == null) {
 546                     return;
 547                 }
 548                 nmi.removeForegroundServiceFlagFromNotification(localPackageName, localForegroundId,
 549                         localUserId);
 550             }
 551         });
 552     }
 553
 554     public void clearDeliveredStartsLocked() {
 555         for (int i=deliveredStarts.size()-1; i>=0; i--) {
 556             deliveredStarts.get(i).removeUriPermissionsLocked();
 557         }
 558         deliveredStarts.clear();
 559     }
 560
 561     public String toString() {
 562         if (stringName != null) {
 563             return stringName;
 564         }
 565         StringBuilder sb = new StringBuilder(128);
 566         sb.append("ServiceRecord{")
 567             .append(Integer.toHexString(System.identityHashCode(this)))
 568             .append(" u").append(userId)
 569             .append(' ').append(shortName).append('}');
 570         return stringName = sb.toString();
 571     }
 572 }