UserManagerService.java revision 4f434a04708e7a254afe2e0d362f715229dc15d1
1/* 2 * Copyright (C) 2011 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.pm; 18 19import android.app.Activity; 20import android.app.ActivityManager; 21import android.app.ActivityManagerNative; 22import android.app.IStopUserCallback; 23import android.content.BroadcastReceiver; 24import android.content.Context; 25import android.content.Intent; 26import android.content.pm.ApplicationInfo; 27import android.content.pm.PackageManager; 28import android.content.pm.PackageManager.NameNotFoundException; 29import android.content.pm.UserInfo; 30import android.graphics.Bitmap; 31import android.os.Binder; 32import android.os.Bundle; 33import android.os.Environment; 34import android.os.FileUtils; 35import android.os.Handler; 36import android.os.IUserManager; 37import android.os.Message; 38import android.os.ParcelFileDescriptor; 39import android.os.Parcelable; 40import android.os.Process; 41import android.os.RemoteException; 42import android.os.ServiceManager; 43import android.os.UserHandle; 44import android.os.UserManager; 45import android.util.AtomicFile; 46import android.util.Log; 47import android.util.Slog; 48import android.util.SparseArray; 49import android.util.SparseBooleanArray; 50import android.util.TimeUtils; 51import android.util.Xml; 52 53import com.android.internal.annotations.VisibleForTesting; 54import com.android.internal.app.IAppOpsService; 55import com.android.internal.util.ArrayUtils; 56import com.android.internal.util.FastXmlSerializer; 57import com.android.internal.util.XmlUtils; 58 59import org.xmlpull.v1.XmlPullParser; 60import org.xmlpull.v1.XmlPullParserException; 61import org.xmlpull.v1.XmlSerializer; 62 63import java.io.BufferedOutputStream; 64import java.io.File; 65import java.io.FileDescriptor; 66import java.io.FileInputStream; 67import java.io.FileNotFoundException; 68import java.io.FileOutputStream; 69import java.io.IOException; 70import java.io.PrintWriter; 71import java.util.ArrayList; 72import java.util.List; 73 74import libcore.io.IoUtils; 75 76public class UserManagerService extends IUserManager.Stub { 77 78 private static final String LOG_TAG = "UserManagerService"; 79 80 private static final boolean DBG = false; 81 82 private static final String TAG_NAME = "name"; 83 private static final String ATTR_FLAGS = "flags"; 84 private static final String ATTR_ICON_PATH = "icon"; 85 private static final String ATTR_ID = "id"; 86 private static final String ATTR_CREATION_TIME = "created"; 87 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 88 private static final String ATTR_SERIAL_NO = "serialNumber"; 89 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 90 private static final String ATTR_PARTIAL = "partial"; 91 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 92 private static final String ATTR_USER_VERSION = "version"; 93 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 94 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 95 private static final String TAG_USERS = "users"; 96 private static final String TAG_USER = "user"; 97 private static final String TAG_RESTRICTIONS = "restrictions"; 98 private static final String TAG_ENTRY = "entry"; 99 private static final String TAG_VALUE = "value"; 100 private static final String ATTR_KEY = "key"; 101 private static final String ATTR_VALUE_TYPE = "type"; 102 private static final String ATTR_MULTIPLE = "m"; 103 104 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 105 private static final String ATTR_TYPE_STRING = "s"; 106 private static final String ATTR_TYPE_BOOLEAN = "b"; 107 private static final String ATTR_TYPE_INTEGER = "i"; 108 private static final String ATTR_TYPE_BUNDLE = "B"; 109 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 110 111 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 112 private static final String USER_LIST_FILENAME = "userlist.xml"; 113 private static final String USER_PHOTO_FILENAME = "photo.png"; 114 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 115 116 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 117 private static final String XML_SUFFIX = ".xml"; 118 119 private static final int MIN_USER_ID = 10; 120 121 private static final int USER_VERSION = 5; 122 123 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 124 125 // Maximum number of managed profiles permitted is 1. This cannot be increased 126 // without first making sure that the rest of the framework is prepared for it. 127 private static final int MAX_MANAGED_PROFILES = 1; 128 129 static final int WRITE_USER_MSG = 1; 130 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 131 132 private final Context mContext; 133 private final PackageManagerService mPm; 134 private final Object mInstallLock; 135 private final Object mPackagesLock; 136 137 private final Handler mHandler; 138 139 private final File mUsersDir; 140 private final File mUserListFile; 141 private final File mBaseUserPath; 142 143 private final SparseArray<UserInfo> mUsers = new SparseArray<UserInfo>(); 144 private final SparseArray<Bundle> mUserRestrictions = new SparseArray<Bundle>(); 145 private final Bundle mGuestRestrictions = new Bundle(); 146 147 /** 148 * Set of user IDs being actively removed. Removed IDs linger in this set 149 * for several seconds to work around a VFS caching issue. 150 */ 151 // @GuardedBy("mPackagesLock") 152 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 153 154 private int[] mUserIds; 155 private int mNextSerialNumber; 156 private int mUserVersion = 0; 157 158 private IAppOpsService mAppOpsService; 159 160 private static UserManagerService sInstance; 161 162 public static UserManagerService getInstance() { 163 synchronized (UserManagerService.class) { 164 return sInstance; 165 } 166 } 167 168 /** 169 * Available for testing purposes. 170 */ 171 UserManagerService(File dataDir, File baseUserPath) { 172 this(null, null, new Object(), new Object(), dataDir, baseUserPath); 173 } 174 175 /** 176 * Called by package manager to create the service. This is closely 177 * associated with the package manager, and the given lock is the 178 * package manager's own lock. 179 */ 180 UserManagerService(Context context, PackageManagerService pm, 181 Object installLock, Object packagesLock) { 182 this(context, pm, installLock, packagesLock, 183 Environment.getDataDirectory(), 184 new File(Environment.getDataDirectory(), "user")); 185 } 186 187 /** 188 * Available for testing purposes. 189 */ 190 private UserManagerService(Context context, PackageManagerService pm, 191 Object installLock, Object packagesLock, 192 File dataDir, File baseUserPath) { 193 mContext = context; 194 mPm = pm; 195 mInstallLock = installLock; 196 mPackagesLock = packagesLock; 197 mHandler = new MainHandler(); 198 synchronized (mInstallLock) { 199 synchronized (mPackagesLock) { 200 mUsersDir = new File(dataDir, USER_INFO_DIR); 201 mUsersDir.mkdirs(); 202 // Make zeroth user directory, for services to migrate their files to that location 203 File userZeroDir = new File(mUsersDir, "0"); 204 userZeroDir.mkdirs(); 205 mBaseUserPath = baseUserPath; 206 FileUtils.setPermissions(mUsersDir.toString(), 207 FileUtils.S_IRWXU|FileUtils.S_IRWXG 208 |FileUtils.S_IROTH|FileUtils.S_IXOTH, 209 -1, -1); 210 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 211 initDefaultGuestRestrictions(); 212 readUserListLocked(); 213 sInstance = this; 214 } 215 } 216 } 217 218 void systemReady() { 219 synchronized (mInstallLock) { 220 synchronized (mPackagesLock) { 221 // Prune out any partially created/partially removed users. 222 ArrayList<UserInfo> partials = new ArrayList<UserInfo>(); 223 for (int i = 0; i < mUsers.size(); i++) { 224 UserInfo ui = mUsers.valueAt(i); 225 if ((ui.partial || ui.guestToRemove) && i != 0) { 226 partials.add(ui); 227 } 228 } 229 for (int i = 0; i < partials.size(); i++) { 230 UserInfo ui = partials.get(i); 231 Slog.w(LOG_TAG, "Removing partially created user #" + i 232 + " (name=" + ui.name + ")"); 233 removeUserStateLocked(ui.id); 234 } 235 } 236 } 237 userForeground(UserHandle.USER_OWNER); 238 mAppOpsService = IAppOpsService.Stub.asInterface( 239 ServiceManager.getService(Context.APP_OPS_SERVICE)); 240 for (int i = 0; i < mUserIds.length; ++i) { 241 try { 242 mAppOpsService.setUserRestrictions(mUserRestrictions.get(mUserIds[i]), mUserIds[i]); 243 } catch (RemoteException e) { 244 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 245 } 246 } 247 } 248 249 @Override 250 public List<UserInfo> getUsers(boolean excludeDying) { 251 checkManageUsersPermission("query users"); 252 synchronized (mPackagesLock) { 253 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 254 for (int i = 0; i < mUsers.size(); i++) { 255 UserInfo ui = mUsers.valueAt(i); 256 if (ui.partial) { 257 continue; 258 } 259 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 260 users.add(ui); 261 } 262 } 263 return users; 264 } 265 } 266 267 @Override 268 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 269 if (userId != UserHandle.getCallingUserId()) { 270 checkManageUsersPermission("getting profiles related to user " + userId); 271 } 272 final long ident = Binder.clearCallingIdentity(); 273 try { 274 synchronized (mPackagesLock) { 275 return getProfilesLocked(userId, enabledOnly); 276 } 277 } finally { 278 Binder.restoreCallingIdentity(ident); 279 } 280 } 281 282 /** Assume permissions already checked and caller's identity cleared */ 283 private List<UserInfo> getProfilesLocked(int userId, boolean enabledOnly) { 284 UserInfo user = getUserInfoLocked(userId); 285 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 286 if (user == null) { 287 // Probably a dying user 288 return users; 289 } 290 for (int i = 0; i < mUsers.size(); i++) { 291 UserInfo profile = mUsers.valueAt(i); 292 if (!isProfileOf(user, profile)) { 293 continue; 294 } 295 if (enabledOnly && !profile.isEnabled()) { 296 continue; 297 } 298 if (mRemovingUserIds.get(profile.id)) { 299 continue; 300 } 301 users.add(profile); 302 } 303 return users; 304 } 305 306 @Override 307 public UserInfo getProfileParent(int userHandle) { 308 checkManageUsersPermission("get the profile parent"); 309 synchronized (mPackagesLock) { 310 return getProfileParentLocked(userHandle); 311 } 312 } 313 314 private UserInfo getProfileParentLocked(int userHandle) { 315 UserInfo profile = getUserInfoLocked(userHandle); 316 if (profile == null) { 317 return null; 318 } 319 int parentUserId = profile.profileGroupId; 320 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 321 return null; 322 } else { 323 return getUserInfoLocked(parentUserId); 324 } 325 } 326 327 private boolean isProfileOf(UserInfo user, UserInfo profile) { 328 return user.id == profile.id || 329 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 330 && user.profileGroupId == profile.profileGroupId); 331 } 332 333 @Override 334 public void setUserEnabled(int userId) { 335 checkManageUsersPermission("enable user"); 336 synchronized (mPackagesLock) { 337 UserInfo info = getUserInfoLocked(userId); 338 if (info != null && !info.isEnabled()) { 339 info.flags ^= UserInfo.FLAG_DISABLED; 340 writeUserLocked(info); 341 } 342 } 343 } 344 345 @Override 346 public UserInfo getUserInfo(int userId) { 347 checkManageUsersPermission("query user"); 348 synchronized (mPackagesLock) { 349 return getUserInfoLocked(userId); 350 } 351 } 352 353 @Override 354 public boolean isRestricted() { 355 synchronized (mPackagesLock) { 356 return getUserInfoLocked(UserHandle.getCallingUserId()).isRestricted(); 357 } 358 } 359 360 /* 361 * Should be locked on mUsers before calling this. 362 */ 363 private UserInfo getUserInfoLocked(int userId) { 364 UserInfo ui = mUsers.get(userId); 365 // If it is partial and not in the process of being removed, return as unknown user. 366 if (ui != null && ui.partial && !mRemovingUserIds.get(userId)) { 367 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 368 return null; 369 } 370 return ui; 371 } 372 373 public boolean exists(int userId) { 374 synchronized (mPackagesLock) { 375 return ArrayUtils.contains(mUserIds, userId); 376 } 377 } 378 379 @Override 380 public void setUserName(int userId, String name) { 381 checkManageUsersPermission("rename users"); 382 boolean changed = false; 383 synchronized (mPackagesLock) { 384 UserInfo info = mUsers.get(userId); 385 if (info == null || info.partial) { 386 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 387 return; 388 } 389 if (name != null && !name.equals(info.name)) { 390 info.name = name; 391 writeUserLocked(info); 392 changed = true; 393 } 394 } 395 if (changed) { 396 sendUserInfoChangedBroadcast(userId); 397 } 398 } 399 400 @Override 401 public void setUserIcon(int userId, Bitmap bitmap) { 402 checkManageUsersPermission("update users"); 403 long ident = Binder.clearCallingIdentity(); 404 try { 405 synchronized (mPackagesLock) { 406 UserInfo info = mUsers.get(userId); 407 if (info == null || info.partial) { 408 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 409 return; 410 } 411 writeBitmapLocked(info, bitmap); 412 writeUserLocked(info); 413 } 414 sendUserInfoChangedBroadcast(userId); 415 } finally { 416 Binder.restoreCallingIdentity(ident); 417 } 418 } 419 420 private void sendUserInfoChangedBroadcast(int userId) { 421 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 422 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 423 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 424 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 425 } 426 427 @Override 428 public ParcelFileDescriptor getUserIcon(int userId) { 429 String iconPath; 430 synchronized (mPackagesLock) { 431 UserInfo info = mUsers.get(userId); 432 if (info == null || info.partial) { 433 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + userId); 434 return null; 435 } 436 int callingGroupId = mUsers.get(UserHandle.getCallingUserId()).profileGroupId; 437 if (callingGroupId == UserInfo.NO_PROFILE_GROUP_ID 438 || callingGroupId != info.profileGroupId) { 439 checkManageUsersPermission("get the icon of a user who is not related"); 440 } 441 if (info.iconPath == null) { 442 return null; 443 } 444 iconPath = info.iconPath; 445 } 446 447 try { 448 return ParcelFileDescriptor.open( 449 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 450 } catch (FileNotFoundException e) { 451 Log.e(LOG_TAG, "Couldn't find icon file", e); 452 } 453 return null; 454 } 455 456 public void makeInitialized(int userId) { 457 checkManageUsersPermission("makeInitialized"); 458 synchronized (mPackagesLock) { 459 UserInfo info = mUsers.get(userId); 460 if (info == null || info.partial) { 461 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 462 } 463 if ((info.flags&UserInfo.FLAG_INITIALIZED) == 0) { 464 info.flags |= UserInfo.FLAG_INITIALIZED; 465 scheduleWriteUserLocked(info); 466 } 467 } 468 } 469 470 /** 471 * If default guest restrictions haven't been initialized yet, add the basic 472 * restrictions. 473 */ 474 private void initDefaultGuestRestrictions() { 475 if (mGuestRestrictions.isEmpty()) { 476 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 477 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 478 } 479 } 480 481 @Override 482 public Bundle getDefaultGuestRestrictions() { 483 checkManageUsersPermission("getDefaultGuestRestrictions"); 484 synchronized (mPackagesLock) { 485 return new Bundle(mGuestRestrictions); 486 } 487 } 488 489 @Override 490 public void setDefaultGuestRestrictions(Bundle restrictions) { 491 checkManageUsersPermission("setDefaultGuestRestrictions"); 492 synchronized (mPackagesLock) { 493 mGuestRestrictions.clear(); 494 mGuestRestrictions.putAll(restrictions); 495 writeUserListLocked(); 496 } 497 } 498 499 @Override 500 public boolean hasUserRestriction(String restrictionKey, int userId) { 501 synchronized (mPackagesLock) { 502 Bundle restrictions = mUserRestrictions.get(userId); 503 return restrictions != null ? restrictions.getBoolean(restrictionKey) : false; 504 } 505 } 506 507 @Override 508 public Bundle getUserRestrictions(int userId) { 509 // checkManageUsersPermission("getUserRestrictions"); 510 511 synchronized (mPackagesLock) { 512 Bundle restrictions = mUserRestrictions.get(userId); 513 return restrictions != null ? new Bundle(restrictions) : new Bundle(); 514 } 515 } 516 517 @Override 518 public void setUserRestrictions(Bundle restrictions, int userId) { 519 checkManageUsersPermission("setUserRestrictions"); 520 if (restrictions == null) return; 521 522 synchronized (mPackagesLock) { 523 mUserRestrictions.get(userId).clear(); 524 mUserRestrictions.get(userId).putAll(restrictions); 525 long token = Binder.clearCallingIdentity(); 526 try { 527 mAppOpsService.setUserRestrictions(mUserRestrictions.get(userId), userId); 528 } catch (RemoteException e) { 529 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 530 } finally { 531 Binder.restoreCallingIdentity(token); 532 } 533 scheduleWriteUserLocked(mUsers.get(userId)); 534 } 535 } 536 537 /** 538 * Check if we've hit the limit of how many users can be created. 539 */ 540 private boolean isUserLimitReachedLocked() { 541 int aliveUserCount = 0; 542 final int totalUserCount = mUsers.size(); 543 // Skip over users being removed 544 for (int i = 0; i < totalUserCount; i++) { 545 UserInfo user = mUsers.valueAt(i); 546 if (!mRemovingUserIds.get(user.id) 547 && !user.isGuest() && !user.partial) { 548 aliveUserCount++; 549 } 550 } 551 return aliveUserCount >= UserManager.getMaxSupportedUsers(); 552 } 553 554 /** 555 * Enforces that only the system UID or root's UID or apps that have the 556 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 557 * permission can make certain calls to the UserManager. 558 * 559 * @param message used as message if SecurityException is thrown 560 * @throws SecurityException if the caller is not system or root 561 */ 562 private static final void checkManageUsersPermission(String message) { 563 final int uid = Binder.getCallingUid(); 564 if (uid != Process.SYSTEM_UID && uid != 0 565 && ActivityManager.checkComponentPermission( 566 android.Manifest.permission.MANAGE_USERS, 567 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 568 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 569 } 570 } 571 572 private void writeBitmapLocked(UserInfo info, Bitmap bitmap) { 573 try { 574 File dir = new File(mUsersDir, Integer.toString(info.id)); 575 File file = new File(dir, USER_PHOTO_FILENAME); 576 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 577 if (!dir.exists()) { 578 dir.mkdir(); 579 FileUtils.setPermissions( 580 dir.getPath(), 581 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 582 -1, -1); 583 } 584 FileOutputStream os; 585 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 586 && tmp.renameTo(file)) { 587 info.iconPath = file.getAbsolutePath(); 588 } 589 try { 590 os.close(); 591 } catch (IOException ioe) { 592 // What the ... ! 593 } 594 tmp.delete(); 595 } catch (FileNotFoundException e) { 596 Slog.w(LOG_TAG, "Error setting photo for user ", e); 597 } 598 } 599 600 /** 601 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 602 * cache it elsewhere. 603 * @return the array of user ids. 604 */ 605 public int[] getUserIds() { 606 synchronized (mPackagesLock) { 607 return mUserIds; 608 } 609 } 610 611 int[] getUserIdsLPr() { 612 return mUserIds; 613 } 614 615 private void readUserListLocked() { 616 if (!mUserListFile.exists()) { 617 fallbackToSingleUserLocked(); 618 return; 619 } 620 FileInputStream fis = null; 621 AtomicFile userListFile = new AtomicFile(mUserListFile); 622 try { 623 fis = userListFile.openRead(); 624 XmlPullParser parser = Xml.newPullParser(); 625 parser.setInput(fis, null); 626 int type; 627 while ((type = parser.next()) != XmlPullParser.START_TAG 628 && type != XmlPullParser.END_DOCUMENT) { 629 ; 630 } 631 632 if (type != XmlPullParser.START_TAG) { 633 Slog.e(LOG_TAG, "Unable to read user list"); 634 fallbackToSingleUserLocked(); 635 return; 636 } 637 638 mNextSerialNumber = -1; 639 if (parser.getName().equals(TAG_USERS)) { 640 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 641 if (lastSerialNumber != null) { 642 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 643 } 644 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 645 if (versionNumber != null) { 646 mUserVersion = Integer.parseInt(versionNumber); 647 } 648 } 649 650 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 651 if (type == XmlPullParser.START_TAG) { 652 final String name = parser.getName(); 653 if (name.equals(TAG_USER)) { 654 String id = parser.getAttributeValue(null, ATTR_ID); 655 UserInfo user = readUserLocked(Integer.parseInt(id)); 656 657 if (user != null) { 658 mUsers.put(user.id, user); 659 if (mNextSerialNumber < 0 || mNextSerialNumber <= user.id) { 660 mNextSerialNumber = user.id + 1; 661 } 662 } 663 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 664 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 665 && type != XmlPullParser.END_TAG) { 666 if (type == XmlPullParser.START_TAG) { 667 if (parser.getName().equals(TAG_RESTRICTIONS)) { 668 readRestrictionsLocked(parser, mGuestRestrictions); 669 } 670 break; 671 } 672 } 673 } 674 } 675 } 676 updateUserIdsLocked(); 677 upgradeIfNecessaryLocked(); 678 } catch (IOException ioe) { 679 fallbackToSingleUserLocked(); 680 } catch (XmlPullParserException pe) { 681 fallbackToSingleUserLocked(); 682 } finally { 683 if (fis != null) { 684 try { 685 fis.close(); 686 } catch (IOException e) { 687 } 688 } 689 } 690 } 691 692 /** 693 * Upgrade steps between versions, either for fixing bugs or changing the data format. 694 */ 695 private void upgradeIfNecessaryLocked() { 696 int userVersion = mUserVersion; 697 if (userVersion < 1) { 698 // Assign a proper name for the owner, if not initialized correctly before 699 UserInfo user = mUsers.get(UserHandle.USER_OWNER); 700 if ("Primary".equals(user.name)) { 701 user.name = mContext.getResources().getString(com.android.internal.R.string.owner_name); 702 scheduleWriteUserLocked(user); 703 } 704 userVersion = 1; 705 } 706 707 if (userVersion < 2) { 708 // Owner should be marked as initialized 709 UserInfo user = mUsers.get(UserHandle.USER_OWNER); 710 if ((user.flags & UserInfo.FLAG_INITIALIZED) == 0) { 711 user.flags |= UserInfo.FLAG_INITIALIZED; 712 scheduleWriteUserLocked(user); 713 } 714 userVersion = 2; 715 } 716 717 718 if (userVersion < 4) { 719 userVersion = 4; 720 } 721 722 if (userVersion < 5) { 723 initDefaultGuestRestrictions(); 724 userVersion = 5; 725 } 726 727 if (userVersion < USER_VERSION) { 728 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 729 + USER_VERSION); 730 } else { 731 mUserVersion = userVersion; 732 writeUserListLocked(); 733 } 734 } 735 736 private void fallbackToSingleUserLocked() { 737 // Create the primary user 738 UserInfo primary = new UserInfo(UserHandle.USER_OWNER, 739 mContext.getResources().getString(com.android.internal.R.string.owner_name), null, 740 UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY | UserInfo.FLAG_INITIALIZED); 741 mUsers.put(0, primary); 742 mNextSerialNumber = MIN_USER_ID; 743 mUserVersion = USER_VERSION; 744 745 Bundle restrictions = new Bundle(); 746 mUserRestrictions.append(UserHandle.USER_OWNER, restrictions); 747 748 updateUserIdsLocked(); 749 initDefaultGuestRestrictions(); 750 751 writeUserListLocked(); 752 writeUserLocked(primary); 753 } 754 755 private void scheduleWriteUserLocked(UserInfo userInfo) { 756 if (!mHandler.hasMessages(WRITE_USER_MSG, userInfo)) { 757 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, userInfo); 758 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 759 } 760 } 761 762 /* 763 * Writes the user file in this format: 764 * 765 * <user flags="20039023" id="0"> 766 * <name>Primary</name> 767 * </user> 768 */ 769 private void writeUserLocked(UserInfo userInfo) { 770 FileOutputStream fos = null; 771 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userInfo.id + XML_SUFFIX)); 772 try { 773 fos = userFile.startWrite(); 774 final BufferedOutputStream bos = new BufferedOutputStream(fos); 775 776 // XmlSerializer serializer = XmlUtils.serializerInstance(); 777 final XmlSerializer serializer = new FastXmlSerializer(); 778 serializer.setOutput(bos, "utf-8"); 779 serializer.startDocument(null, true); 780 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 781 782 serializer.startTag(null, TAG_USER); 783 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 784 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 785 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 786 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 787 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 788 Long.toString(userInfo.lastLoggedInTime)); 789 if (userInfo.iconPath != null) { 790 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 791 } 792 if (userInfo.partial) { 793 serializer.attribute(null, ATTR_PARTIAL, "true"); 794 } 795 if (userInfo.guestToRemove) { 796 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 797 } 798 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 799 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 800 Integer.toString(userInfo.profileGroupId)); 801 } 802 803 serializer.startTag(null, TAG_NAME); 804 serializer.text(userInfo.name); 805 serializer.endTag(null, TAG_NAME); 806 Bundle restrictions = mUserRestrictions.get(userInfo.id); 807 if (restrictions != null) { 808 writeRestrictionsLocked(serializer, restrictions); 809 } 810 serializer.endTag(null, TAG_USER); 811 812 serializer.endDocument(); 813 userFile.finishWrite(fos); 814 } catch (Exception ioe) { 815 Slog.e(LOG_TAG, "Error writing user info " + userInfo.id + "\n" + ioe); 816 userFile.failWrite(fos); 817 } 818 } 819 820 /* 821 * Writes the user list file in this format: 822 * 823 * <users nextSerialNumber="3"> 824 * <user id="0"></user> 825 * <user id="2"></user> 826 * </users> 827 */ 828 private void writeUserListLocked() { 829 FileOutputStream fos = null; 830 AtomicFile userListFile = new AtomicFile(mUserListFile); 831 try { 832 fos = userListFile.startWrite(); 833 final BufferedOutputStream bos = new BufferedOutputStream(fos); 834 835 // XmlSerializer serializer = XmlUtils.serializerInstance(); 836 final XmlSerializer serializer = new FastXmlSerializer(); 837 serializer.setOutput(bos, "utf-8"); 838 serializer.startDocument(null, true); 839 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 840 841 serializer.startTag(null, TAG_USERS); 842 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 843 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 844 845 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 846 writeRestrictionsLocked(serializer, mGuestRestrictions); 847 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 848 for (int i = 0; i < mUsers.size(); i++) { 849 UserInfo user = mUsers.valueAt(i); 850 serializer.startTag(null, TAG_USER); 851 serializer.attribute(null, ATTR_ID, Integer.toString(user.id)); 852 serializer.endTag(null, TAG_USER); 853 } 854 855 serializer.endTag(null, TAG_USERS); 856 857 serializer.endDocument(); 858 userListFile.finishWrite(fos); 859 } catch (Exception e) { 860 userListFile.failWrite(fos); 861 Slog.e(LOG_TAG, "Error writing user list"); 862 } 863 } 864 865 private void writeRestrictionsLocked(XmlSerializer serializer, Bundle restrictions) 866 throws IOException { 867 serializer.startTag(null, TAG_RESTRICTIONS); 868 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_WIFI); 869 writeBoolean(serializer, restrictions, UserManager.DISALLOW_MODIFY_ACCOUNTS); 870 writeBoolean(serializer, restrictions, UserManager.DISALLOW_INSTALL_APPS); 871 writeBoolean(serializer, restrictions, UserManager.DISALLOW_UNINSTALL_APPS); 872 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SHARE_LOCATION); 873 writeBoolean(serializer, restrictions, 874 UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES); 875 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_BLUETOOTH); 876 writeBoolean(serializer, restrictions, UserManager.DISALLOW_USB_FILE_TRANSFER); 877 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_CREDENTIALS); 878 writeBoolean(serializer, restrictions, UserManager.DISALLOW_REMOVE_USER); 879 writeBoolean(serializer, restrictions, UserManager.DISALLOW_DEBUGGING_FEATURES); 880 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_VPN); 881 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_TETHERING); 882 writeBoolean(serializer, restrictions, UserManager.DISALLOW_FACTORY_RESET); 883 writeBoolean(serializer, restrictions, UserManager.DISALLOW_ADD_USER); 884 writeBoolean(serializer, restrictions, UserManager.ENSURE_VERIFY_APPS); 885 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_CELL_BROADCASTS); 886 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS); 887 writeBoolean(serializer, restrictions, UserManager.DISALLOW_APPS_CONTROL); 888 writeBoolean(serializer, restrictions, UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA); 889 writeBoolean(serializer, restrictions, UserManager.DISALLOW_UNMUTE_MICROPHONE); 890 writeBoolean(serializer, restrictions, UserManager.DISALLOW_ADJUST_VOLUME); 891 writeBoolean(serializer, restrictions, UserManager.DISALLOW_OUTGOING_CALLS); 892 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SMS); 893 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CREATE_WINDOWS); 894 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE); 895 writeBoolean(serializer, restrictions, UserManager.DISALLOW_OUTGOING_BEAM); 896 writeBoolean(serializer, restrictions, UserManager.DISALLOW_WALLPAPER); 897 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SAFE_BOOT); 898 serializer.endTag(null, TAG_RESTRICTIONS); 899 } 900 901 private UserInfo readUserLocked(int id) { 902 int flags = 0; 903 int serialNumber = id; 904 String name = null; 905 String iconPath = null; 906 long creationTime = 0L; 907 long lastLoggedInTime = 0L; 908 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 909 boolean partial = false; 910 boolean guestToRemove = false; 911 Bundle restrictions = new Bundle(); 912 913 FileInputStream fis = null; 914 try { 915 AtomicFile userFile = 916 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 917 fis = userFile.openRead(); 918 XmlPullParser parser = Xml.newPullParser(); 919 parser.setInput(fis, null); 920 int type; 921 while ((type = parser.next()) != XmlPullParser.START_TAG 922 && type != XmlPullParser.END_DOCUMENT) { 923 ; 924 } 925 926 if (type != XmlPullParser.START_TAG) { 927 Slog.e(LOG_TAG, "Unable to read user " + id); 928 return null; 929 } 930 931 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 932 int storedId = readIntAttribute(parser, ATTR_ID, -1); 933 if (storedId != id) { 934 Slog.e(LOG_TAG, "User id does not match the file name"); 935 return null; 936 } 937 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 938 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 939 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 940 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 941 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 942 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 943 UserInfo.NO_PROFILE_GROUP_ID); 944 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 945 if ("true".equals(valueString)) { 946 partial = true; 947 } 948 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 949 if ("true".equals(valueString)) { 950 guestToRemove = true; 951 } 952 953 int outerDepth = parser.getDepth(); 954 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 955 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 956 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 957 continue; 958 } 959 String tag = parser.getName(); 960 if (TAG_NAME.equals(tag)) { 961 type = parser.next(); 962 if (type == XmlPullParser.TEXT) { 963 name = parser.getText(); 964 } 965 } else if (TAG_RESTRICTIONS.equals(tag)) { 966 readRestrictionsLocked(parser, restrictions); 967 } 968 } 969 } 970 971 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 972 userInfo.serialNumber = serialNumber; 973 userInfo.creationTime = creationTime; 974 userInfo.lastLoggedInTime = lastLoggedInTime; 975 userInfo.partial = partial; 976 userInfo.guestToRemove = guestToRemove; 977 userInfo.profileGroupId = profileGroupId; 978 mUserRestrictions.append(id, restrictions); 979 return userInfo; 980 981 } catch (IOException ioe) { 982 } catch (XmlPullParserException pe) { 983 } finally { 984 if (fis != null) { 985 try { 986 fis.close(); 987 } catch (IOException e) { 988 } 989 } 990 } 991 return null; 992 } 993 994 private void readRestrictionsLocked(XmlPullParser parser, Bundle restrictions) 995 throws IOException { 996 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_WIFI); 997 readBoolean(parser, restrictions, UserManager.DISALLOW_MODIFY_ACCOUNTS); 998 readBoolean(parser, restrictions, UserManager.DISALLOW_INSTALL_APPS); 999 readBoolean(parser, restrictions, UserManager.DISALLOW_UNINSTALL_APPS); 1000 readBoolean(parser, restrictions, UserManager.DISALLOW_SHARE_LOCATION); 1001 readBoolean(parser, restrictions, 1002 UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES); 1003 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_BLUETOOTH); 1004 readBoolean(parser, restrictions, UserManager.DISALLOW_USB_FILE_TRANSFER); 1005 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_CREDENTIALS); 1006 readBoolean(parser, restrictions, UserManager.DISALLOW_REMOVE_USER); 1007 readBoolean(parser, restrictions, UserManager.DISALLOW_DEBUGGING_FEATURES); 1008 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_VPN); 1009 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_TETHERING); 1010 readBoolean(parser, restrictions, UserManager.DISALLOW_FACTORY_RESET); 1011 readBoolean(parser, restrictions, UserManager.DISALLOW_ADD_USER); 1012 readBoolean(parser, restrictions, UserManager.ENSURE_VERIFY_APPS); 1013 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_CELL_BROADCASTS); 1014 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS); 1015 readBoolean(parser, restrictions, UserManager.DISALLOW_APPS_CONTROL); 1016 readBoolean(parser, restrictions, 1017 UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA); 1018 readBoolean(parser, restrictions, UserManager.DISALLOW_UNMUTE_MICROPHONE); 1019 readBoolean(parser, restrictions, UserManager.DISALLOW_ADJUST_VOLUME); 1020 readBoolean(parser, restrictions, UserManager.DISALLOW_OUTGOING_CALLS); 1021 readBoolean(parser, restrictions, UserManager.DISALLOW_SMS); 1022 readBoolean(parser, restrictions, UserManager.DISALLOW_CREATE_WINDOWS); 1023 readBoolean(parser, restrictions, UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE); 1024 readBoolean(parser, restrictions, UserManager.DISALLOW_OUTGOING_BEAM); 1025 readBoolean(parser, restrictions, UserManager.DISALLOW_WALLPAPER); 1026 readBoolean(parser, restrictions, UserManager.DISALLOW_SAFE_BOOT); 1027 } 1028 1029 private void readBoolean(XmlPullParser parser, Bundle restrictions, 1030 String restrictionKey) { 1031 String value = parser.getAttributeValue(null, restrictionKey); 1032 if (value != null) { 1033 restrictions.putBoolean(restrictionKey, Boolean.parseBoolean(value)); 1034 } 1035 } 1036 1037 private void writeBoolean(XmlSerializer xml, Bundle restrictions, String restrictionKey) 1038 throws IOException { 1039 if (restrictions.containsKey(restrictionKey)) { 1040 xml.attribute(null, restrictionKey, 1041 Boolean.toString(restrictions.getBoolean(restrictionKey))); 1042 } 1043 } 1044 1045 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1046 String valueString = parser.getAttributeValue(null, attr); 1047 if (valueString == null) return defaultValue; 1048 try { 1049 return Integer.parseInt(valueString); 1050 } catch (NumberFormatException nfe) { 1051 return defaultValue; 1052 } 1053 } 1054 1055 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1056 String valueString = parser.getAttributeValue(null, attr); 1057 if (valueString == null) return defaultValue; 1058 try { 1059 return Long.parseLong(valueString); 1060 } catch (NumberFormatException nfe) { 1061 return defaultValue; 1062 } 1063 } 1064 1065 private boolean isPackageInstalled(String pkg, int userId) { 1066 final ApplicationInfo info = mPm.getApplicationInfo(pkg, 1067 PackageManager.GET_UNINSTALLED_PACKAGES, 1068 userId); 1069 if (info == null || (info.flags&ApplicationInfo.FLAG_INSTALLED) == 0) { 1070 return false; 1071 } 1072 return true; 1073 } 1074 1075 /** 1076 * Removes all the restrictions files (res_<packagename>) for a given user. 1077 * Does not do any permissions checking. 1078 */ 1079 private void cleanAppRestrictions(int userId) { 1080 synchronized (mPackagesLock) { 1081 File dir = Environment.getUserSystemDirectory(userId); 1082 String[] files = dir.list(); 1083 if (files == null) return; 1084 for (String fileName : files) { 1085 if (fileName.startsWith(RESTRICTIONS_FILE_PREFIX)) { 1086 File resFile = new File(dir, fileName); 1087 if (resFile.exists()) { 1088 resFile.delete(); 1089 } 1090 } 1091 } 1092 } 1093 } 1094 1095 /** 1096 * Removes the app restrictions file for a specific package and user id, if it exists. 1097 */ 1098 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1099 synchronized (mPackagesLock) { 1100 File dir = Environment.getUserSystemDirectory(userId); 1101 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1102 if (resFile.exists()) { 1103 resFile.delete(); 1104 } 1105 } 1106 } 1107 1108 @Override 1109 public UserInfo createProfileForUser(String name, int flags, int userId) { 1110 checkManageUsersPermission("Only the system can create users"); 1111 if (userId != UserHandle.USER_OWNER) { 1112 Slog.w(LOG_TAG, "Only user owner can have profiles"); 1113 return null; 1114 } 1115 return createUserInternal(name, flags, userId); 1116 } 1117 1118 @Override 1119 public UserInfo createUser(String name, int flags) { 1120 checkManageUsersPermission("Only the system can create users"); 1121 return createUserInternal(name, flags, UserHandle.USER_NULL); 1122 } 1123 1124 private UserInfo createUserInternal(String name, int flags, int parentId) { 1125 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1126 UserManager.DISALLOW_ADD_USER, false)) { 1127 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1128 return null; 1129 } 1130 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1131 final long ident = Binder.clearCallingIdentity(); 1132 UserInfo userInfo = null; 1133 try { 1134 synchronized (mInstallLock) { 1135 synchronized (mPackagesLock) { 1136 UserInfo parent = null; 1137 if (parentId != UserHandle.USER_NULL) { 1138 parent = getUserInfoLocked(parentId); 1139 if (parent == null) return null; 1140 } 1141 // If we're not adding a guest user and the limit has been reached, 1142 // cannot add a user. 1143 if (!isGuest && isUserLimitReachedLocked()) { 1144 return null; 1145 } 1146 // If we're adding a guest and there already exists one, bail. 1147 if (isGuest && findCurrentGuestUserLocked() != null) { 1148 return null; 1149 } 1150 // Limit number of managed profiles that can be created 1151 if ((flags & UserInfo.FLAG_MANAGED_PROFILE) != 0 1152 && numberOfUsersOfTypeLocked(UserInfo.FLAG_MANAGED_PROFILE, true) 1153 >= MAX_MANAGED_PROFILES) { 1154 return null; 1155 } 1156 int userId = getNextAvailableIdLocked(); 1157 userInfo = new UserInfo(userId, name, null, flags); 1158 File userPath = new File(mBaseUserPath, Integer.toString(userId)); 1159 userInfo.serialNumber = mNextSerialNumber++; 1160 long now = System.currentTimeMillis(); 1161 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1162 userInfo.partial = true; 1163 Environment.getUserSystemDirectory(userInfo.id).mkdirs(); 1164 mUsers.put(userId, userInfo); 1165 writeUserListLocked(); 1166 if (parent != null) { 1167 if (parent.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1168 parent.profileGroupId = parent.id; 1169 scheduleWriteUserLocked(parent); 1170 } 1171 userInfo.profileGroupId = parent.profileGroupId; 1172 } 1173 mPm.createNewUserLILPw(userId, userPath); 1174 userInfo.partial = false; 1175 scheduleWriteUserLocked(userInfo); 1176 updateUserIdsLocked(); 1177 Bundle restrictions = new Bundle(); 1178 mUserRestrictions.append(userId, restrictions); 1179 mPm.newUserCreatedLILPw(userId); 1180 } 1181 } 1182 if (userInfo != null) { 1183 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 1184 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userInfo.id); 1185 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 1186 android.Manifest.permission.MANAGE_USERS); 1187 } 1188 } finally { 1189 Binder.restoreCallingIdentity(ident); 1190 } 1191 return userInfo; 1192 } 1193 1194 private int numberOfUsersOfTypeLocked(int flags, boolean excludeDying) { 1195 int count = 0; 1196 for (int i = mUsers.size() - 1; i >= 0; i--) { 1197 UserInfo user = mUsers.valueAt(i); 1198 if (!excludeDying || !mRemovingUserIds.get(user.id)) { 1199 if ((user.flags & flags) != 0) { 1200 count++; 1201 } 1202 } 1203 } 1204 return count; 1205 } 1206 1207 /** 1208 * Find the current guest user. If the Guest user is partial, 1209 * then do not include it in the results as it is about to die. 1210 * This is different than {@link #numberOfUsersOfTypeLocked(int, boolean)} due to 1211 * the special handling of Guests being removed. 1212 */ 1213 private UserInfo findCurrentGuestUserLocked() { 1214 final int size = mUsers.size(); 1215 for (int i = 0; i < size; i++) { 1216 final UserInfo user = mUsers.valueAt(i); 1217 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 1218 return user; 1219 } 1220 } 1221 return null; 1222 } 1223 1224 /** 1225 * Mark this guest user for deletion to allow us to create another guest 1226 * and switch to that user before actually removing this guest. 1227 * @param userHandle the userid of the current guest 1228 * @return whether the user could be marked for deletion 1229 */ 1230 public boolean markGuestForDeletion(int userHandle) { 1231 checkManageUsersPermission("Only the system can remove users"); 1232 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1233 UserManager.DISALLOW_REMOVE_USER, false)) { 1234 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1235 return false; 1236 } 1237 1238 long ident = Binder.clearCallingIdentity(); 1239 try { 1240 final UserInfo user; 1241 synchronized (mPackagesLock) { 1242 user = mUsers.get(userHandle); 1243 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1244 return false; 1245 } 1246 if (!user.isGuest()) { 1247 return false; 1248 } 1249 // We set this to a guest user that is to be removed. This is a temporary state 1250 // where we are allowed to add new Guest users, even if this one is still not 1251 // removed. This user will still show up in getUserInfo() calls. 1252 // If we don't get around to removing this Guest user, it will be purged on next 1253 // startup. 1254 user.guestToRemove = true; 1255 // Mark it as disabled, so that it isn't returned any more when 1256 // profiles are queried. 1257 user.flags |= UserInfo.FLAG_DISABLED; 1258 writeUserLocked(user); 1259 } 1260 } finally { 1261 Binder.restoreCallingIdentity(ident); 1262 } 1263 return true; 1264 } 1265 1266 /** 1267 * Removes a user and all data directories created for that user. This method should be called 1268 * after the user's processes have been terminated. 1269 * @param userHandle the user's id 1270 */ 1271 public boolean removeUser(int userHandle) { 1272 checkManageUsersPermission("Only the system can remove users"); 1273 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1274 UserManager.DISALLOW_REMOVE_USER, false)) { 1275 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1276 return false; 1277 } 1278 1279 long ident = Binder.clearCallingIdentity(); 1280 try { 1281 final UserInfo user; 1282 synchronized (mPackagesLock) { 1283 user = mUsers.get(userHandle); 1284 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1285 return false; 1286 } 1287 1288 // We remember deleted user IDs to prevent them from being 1289 // reused during the current boot; they can still be reused 1290 // after a reboot. 1291 mRemovingUserIds.put(userHandle, true); 1292 1293 try { 1294 mAppOpsService.removeUser(userHandle); 1295 } catch (RemoteException e) { 1296 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 1297 } 1298 // Set this to a partially created user, so that the user will be purged 1299 // on next startup, in case the runtime stops now before stopping and 1300 // removing the user completely. 1301 user.partial = true; 1302 // Mark it as disabled, so that it isn't returned any more when 1303 // profiles are queried. 1304 user.flags |= UserInfo.FLAG_DISABLED; 1305 writeUserLocked(user); 1306 } 1307 1308 if (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 1309 && user.isManagedProfile()) { 1310 // Send broadcast to notify system that the user removed was a 1311 // managed user. 1312 sendProfileRemovedBroadcast(user.profileGroupId, user.id); 1313 } 1314 1315 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 1316 int res; 1317 try { 1318 res = ActivityManagerNative.getDefault().stopUser(userHandle, 1319 new IStopUserCallback.Stub() { 1320 @Override 1321 public void userStopped(int userId) { 1322 finishRemoveUser(userId); 1323 } 1324 @Override 1325 public void userStopAborted(int userId) { 1326 } 1327 }); 1328 } catch (RemoteException e) { 1329 return false; 1330 } 1331 return res == ActivityManager.USER_OP_SUCCESS; 1332 } finally { 1333 Binder.restoreCallingIdentity(ident); 1334 } 1335 } 1336 1337 void finishRemoveUser(final int userHandle) { 1338 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 1339 // Let other services shutdown any activity and clean up their state before completely 1340 // wiping the user's system directory and removing from the user list 1341 long ident = Binder.clearCallingIdentity(); 1342 try { 1343 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 1344 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 1345 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 1346 android.Manifest.permission.MANAGE_USERS, 1347 1348 new BroadcastReceiver() { 1349 @Override 1350 public void onReceive(Context context, Intent intent) { 1351 if (DBG) { 1352 Slog.i(LOG_TAG, 1353 "USER_REMOVED broadcast sent, cleaning up user data " 1354 + userHandle); 1355 } 1356 new Thread() { 1357 public void run() { 1358 synchronized (mInstallLock) { 1359 synchronized (mPackagesLock) { 1360 removeUserStateLocked(userHandle); 1361 } 1362 } 1363 } 1364 }.start(); 1365 } 1366 }, 1367 1368 null, Activity.RESULT_OK, null, null); 1369 } finally { 1370 Binder.restoreCallingIdentity(ident); 1371 } 1372 } 1373 1374 private void removeUserStateLocked(final int userHandle) { 1375 // Cleanup package manager settings 1376 mPm.cleanUpUserLILPw(this, userHandle); 1377 1378 // Remove this user from the list 1379 mUsers.remove(userHandle); 1380 // Remove user file 1381 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 1382 userFile.delete(); 1383 // Update the user list 1384 writeUserListLocked(); 1385 updateUserIdsLocked(); 1386 removeDirectoryRecursive(Environment.getUserSystemDirectory(userHandle)); 1387 } 1388 1389 private void removeDirectoryRecursive(File parent) { 1390 if (parent.isDirectory()) { 1391 String[] files = parent.list(); 1392 for (String filename : files) { 1393 File child = new File(parent, filename); 1394 removeDirectoryRecursive(child); 1395 } 1396 } 1397 parent.delete(); 1398 } 1399 1400 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 1401 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 1402 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 1403 Intent.FLAG_RECEIVER_FOREGROUND); 1404 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 1405 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 1406 } 1407 1408 @Override 1409 public Bundle getApplicationRestrictions(String packageName) { 1410 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 1411 } 1412 1413 @Override 1414 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 1415 if (UserHandle.getCallingUserId() != userId 1416 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 1417 checkManageUsersPermission("Only system can get restrictions for other users/apps"); 1418 } 1419 synchronized (mPackagesLock) { 1420 // Read the restrictions from XML 1421 return readApplicationRestrictionsLocked(packageName, userId); 1422 } 1423 } 1424 1425 @Override 1426 public void setApplicationRestrictions(String packageName, Bundle restrictions, 1427 int userId) { 1428 if (UserHandle.getCallingUserId() != userId 1429 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 1430 checkManageUsersPermission("Only system can set restrictions for other users/apps"); 1431 } 1432 synchronized (mPackagesLock) { 1433 if (restrictions == null || restrictions.isEmpty()) { 1434 cleanAppRestrictionsForPackage(packageName, userId); 1435 } else { 1436 // Write the restrictions to XML 1437 writeApplicationRestrictionsLocked(packageName, restrictions, userId); 1438 } 1439 } 1440 1441 if (isPackageInstalled(packageName, userId)) { 1442 // Notify package of changes via an intent - only sent to explicitly registered receivers. 1443 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 1444 changeIntent.setPackage(packageName); 1445 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1446 mContext.sendBroadcastAsUser(changeIntent, new UserHandle(userId)); 1447 } 1448 } 1449 1450 @Override 1451 public void removeRestrictions() { 1452 checkManageUsersPermission("Only system can remove restrictions"); 1453 final int userHandle = UserHandle.getCallingUserId(); 1454 removeRestrictionsForUser(userHandle, true); 1455 } 1456 1457 private void removeRestrictionsForUser(final int userHandle, boolean unhideApps) { 1458 synchronized (mPackagesLock) { 1459 // Remove all user restrictions 1460 setUserRestrictions(new Bundle(), userHandle); 1461 // Remove any app restrictions 1462 cleanAppRestrictions(userHandle); 1463 } 1464 if (unhideApps) { 1465 unhideAllInstalledAppsForUser(userHandle); 1466 } 1467 } 1468 1469 private void unhideAllInstalledAppsForUser(final int userHandle) { 1470 mHandler.post(new Runnable() { 1471 @Override 1472 public void run() { 1473 List<ApplicationInfo> apps = 1474 mPm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES, 1475 userHandle).getList(); 1476 final long ident = Binder.clearCallingIdentity(); 1477 try { 1478 for (ApplicationInfo appInfo : apps) { 1479 if ((appInfo.flags & ApplicationInfo.FLAG_INSTALLED) != 0 1480 && (appInfo.privateFlags & ApplicationInfo.PRIVATE_FLAG_HIDDEN) 1481 != 0) { 1482 mPm.setApplicationHiddenSettingAsUser(appInfo.packageName, false, 1483 userHandle); 1484 } 1485 } 1486 } finally { 1487 Binder.restoreCallingIdentity(ident); 1488 } 1489 } 1490 }); 1491 } 1492 private int getUidForPackage(String packageName) { 1493 long ident = Binder.clearCallingIdentity(); 1494 try { 1495 return mContext.getPackageManager().getApplicationInfo(packageName, 1496 PackageManager.GET_UNINSTALLED_PACKAGES).uid; 1497 } catch (NameNotFoundException nnfe) { 1498 return -1; 1499 } finally { 1500 Binder.restoreCallingIdentity(ident); 1501 } 1502 } 1503 1504 private Bundle readApplicationRestrictionsLocked(String packageName, 1505 int userId) { 1506 AtomicFile restrictionsFile = 1507 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 1508 packageToRestrictionsFileName(packageName))); 1509 return readApplicationRestrictionsLocked(restrictionsFile); 1510 } 1511 1512 @VisibleForTesting 1513 static Bundle readApplicationRestrictionsLocked(AtomicFile restrictionsFile) { 1514 final Bundle restrictions = new Bundle(); 1515 final ArrayList<String> values = new ArrayList<>(); 1516 if (!restrictionsFile.getBaseFile().exists()) { 1517 return restrictions; 1518 } 1519 1520 FileInputStream fis = null; 1521 try { 1522 fis = restrictionsFile.openRead(); 1523 XmlPullParser parser = Xml.newPullParser(); 1524 parser.setInput(fis, null); 1525 XmlUtils.nextElement(parser); 1526 if (parser.getEventType() != XmlPullParser.START_TAG) { 1527 Slog.e(LOG_TAG, "Unable to read restrictions file " 1528 + restrictionsFile.getBaseFile()); 1529 return restrictions; 1530 } 1531 while (parser.next() != XmlPullParser.END_DOCUMENT) { 1532 readEntry(restrictions, values, parser); 1533 } 1534 } catch (IOException|XmlPullParserException e) { 1535 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 1536 } finally { 1537 IoUtils.closeQuietly(fis); 1538 } 1539 return restrictions; 1540 } 1541 1542 private static void readEntry(Bundle restrictions, ArrayList<String> values, 1543 XmlPullParser parser) throws XmlPullParserException, IOException { 1544 int type = parser.getEventType(); 1545 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 1546 String key = parser.getAttributeValue(null, ATTR_KEY); 1547 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 1548 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 1549 if (multiple != null) { 1550 values.clear(); 1551 int count = Integer.parseInt(multiple); 1552 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1553 if (type == XmlPullParser.START_TAG 1554 && parser.getName().equals(TAG_VALUE)) { 1555 values.add(parser.nextText().trim()); 1556 count--; 1557 } 1558 } 1559 String [] valueStrings = new String[values.size()]; 1560 values.toArray(valueStrings); 1561 restrictions.putStringArray(key, valueStrings); 1562 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 1563 restrictions.putBundle(key, readBundleEntry(parser, values)); 1564 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 1565 final int outerDepth = parser.getDepth(); 1566 ArrayList<Bundle> bundleList = new ArrayList<>(); 1567 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 1568 Bundle childBundle = readBundleEntry(parser, values); 1569 bundleList.add(childBundle); 1570 } 1571 restrictions.putParcelableArray(key, 1572 bundleList.toArray(new Bundle[bundleList.size()])); 1573 } else { 1574 String value = parser.nextText().trim(); 1575 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 1576 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 1577 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 1578 restrictions.putInt(key, Integer.parseInt(value)); 1579 } else { 1580 restrictions.putString(key, value); 1581 } 1582 } 1583 } 1584 } 1585 1586 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 1587 throws IOException, XmlPullParserException { 1588 Bundle childBundle = new Bundle(); 1589 final int outerDepth = parser.getDepth(); 1590 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 1591 readEntry(childBundle, values, parser); 1592 } 1593 return childBundle; 1594 } 1595 1596 private void writeApplicationRestrictionsLocked(String packageName, 1597 Bundle restrictions, int userId) { 1598 AtomicFile restrictionsFile = new AtomicFile( 1599 new File(Environment.getUserSystemDirectory(userId), 1600 packageToRestrictionsFileName(packageName))); 1601 writeApplicationRestrictionsLocked(restrictions, restrictionsFile); 1602 } 1603 1604 @VisibleForTesting 1605 static void writeApplicationRestrictionsLocked(Bundle restrictions, 1606 AtomicFile restrictionsFile) { 1607 FileOutputStream fos = null; 1608 try { 1609 fos = restrictionsFile.startWrite(); 1610 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1611 1612 final XmlSerializer serializer = new FastXmlSerializer(); 1613 serializer.setOutput(bos, "utf-8"); 1614 serializer.startDocument(null, true); 1615 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1616 1617 serializer.startTag(null, TAG_RESTRICTIONS); 1618 writeBundle(restrictions, serializer); 1619 serializer.endTag(null, TAG_RESTRICTIONS); 1620 1621 serializer.endDocument(); 1622 restrictionsFile.finishWrite(fos); 1623 } catch (Exception e) { 1624 restrictionsFile.failWrite(fos); 1625 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 1626 } 1627 } 1628 1629 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 1630 throws IOException { 1631 for (String key : restrictions.keySet()) { 1632 Object value = restrictions.get(key); 1633 serializer.startTag(null, TAG_ENTRY); 1634 serializer.attribute(null, ATTR_KEY, key); 1635 1636 if (value instanceof Boolean) { 1637 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 1638 serializer.text(value.toString()); 1639 } else if (value instanceof Integer) { 1640 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 1641 serializer.text(value.toString()); 1642 } else if (value == null || value instanceof String) { 1643 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 1644 serializer.text(value != null ? (String) value : ""); 1645 } else if (value instanceof Bundle) { 1646 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 1647 writeBundle((Bundle) value, serializer); 1648 } else if (value instanceof Parcelable[]) { 1649 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 1650 Parcelable[] array = (Parcelable[]) value; 1651 for (Parcelable parcelable : array) { 1652 if (!(parcelable instanceof Bundle)) { 1653 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 1654 } 1655 serializer.startTag(null, TAG_ENTRY); 1656 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 1657 writeBundle((Bundle) parcelable, serializer); 1658 serializer.endTag(null, TAG_ENTRY); 1659 } 1660 } else { 1661 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 1662 String[] values = (String[]) value; 1663 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 1664 for (String choice : values) { 1665 serializer.startTag(null, TAG_VALUE); 1666 serializer.text(choice != null ? choice : ""); 1667 serializer.endTag(null, TAG_VALUE); 1668 } 1669 } 1670 serializer.endTag(null, TAG_ENTRY); 1671 } 1672 } 1673 1674 @Override 1675 public int getUserSerialNumber(int userHandle) { 1676 synchronized (mPackagesLock) { 1677 if (!exists(userHandle)) return -1; 1678 return getUserInfoLocked(userHandle).serialNumber; 1679 } 1680 } 1681 1682 @Override 1683 public int getUserHandle(int userSerialNumber) { 1684 synchronized (mPackagesLock) { 1685 for (int userId : mUserIds) { 1686 UserInfo info = getUserInfoLocked(userId); 1687 if (info != null && info.serialNumber == userSerialNumber) return userId; 1688 } 1689 // Not found 1690 return -1; 1691 } 1692 } 1693 1694 @Override 1695 public long getUserCreationTime(int userHandle) { 1696 int callingUserId = UserHandle.getCallingUserId(); 1697 UserInfo userInfo = null; 1698 synchronized (mPackagesLock) { 1699 if (callingUserId == userHandle) { 1700 userInfo = getUserInfoLocked(userHandle); 1701 } else { 1702 UserInfo parent = getProfileParentLocked(userHandle); 1703 if (parent != null && parent.id == callingUserId) { 1704 userInfo = getUserInfoLocked(userHandle); 1705 } 1706 } 1707 } 1708 if (userInfo == null) { 1709 throw new SecurityException("userHandle can only be the calling user or a managed " 1710 + "profile associated with this user"); 1711 } 1712 return userInfo.creationTime; 1713 } 1714 1715 /** 1716 * Caches the list of user ids in an array, adjusting the array size when necessary. 1717 */ 1718 private void updateUserIdsLocked() { 1719 int num = 0; 1720 for (int i = 0; i < mUsers.size(); i++) { 1721 if (!mUsers.valueAt(i).partial) { 1722 num++; 1723 } 1724 } 1725 final int[] newUsers = new int[num]; 1726 int n = 0; 1727 for (int i = 0; i < mUsers.size(); i++) { 1728 if (!mUsers.valueAt(i).partial) { 1729 newUsers[n++] = mUsers.keyAt(i); 1730 } 1731 } 1732 mUserIds = newUsers; 1733 } 1734 1735 /** 1736 * Make a note of the last started time of a user and do some cleanup. 1737 * @param userId the user that was just foregrounded 1738 */ 1739 public void userForeground(int userId) { 1740 synchronized (mPackagesLock) { 1741 UserInfo user = mUsers.get(userId); 1742 long now = System.currentTimeMillis(); 1743 if (user == null || user.partial) { 1744 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 1745 return; 1746 } 1747 if (now > EPOCH_PLUS_30_YEARS) { 1748 user.lastLoggedInTime = now; 1749 scheduleWriteUserLocked(user); 1750 } 1751 } 1752 } 1753 1754 /** 1755 * Returns the next available user id, filling in any holes in the ids. 1756 * TODO: May not be a good idea to recycle ids, in case it results in confusion 1757 * for data and battery stats collection, or unexpected cross-talk. 1758 * @return 1759 */ 1760 private int getNextAvailableIdLocked() { 1761 synchronized (mPackagesLock) { 1762 int i = MIN_USER_ID; 1763 while (i < Integer.MAX_VALUE) { 1764 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 1765 break; 1766 } 1767 i++; 1768 } 1769 return i; 1770 } 1771 } 1772 1773 private String packageToRestrictionsFileName(String packageName) { 1774 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 1775 } 1776 1777 @Override 1778 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1779 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 1780 != PackageManager.PERMISSION_GRANTED) { 1781 pw.println("Permission Denial: can't dump UserManager from from pid=" 1782 + Binder.getCallingPid() 1783 + ", uid=" + Binder.getCallingUid() 1784 + " without permission " 1785 + android.Manifest.permission.DUMP); 1786 return; 1787 } 1788 1789 long now = System.currentTimeMillis(); 1790 StringBuilder sb = new StringBuilder(); 1791 synchronized (mPackagesLock) { 1792 pw.println("Users:"); 1793 for (int i = 0; i < mUsers.size(); i++) { 1794 UserInfo user = mUsers.valueAt(i); 1795 if (user == null) continue; 1796 pw.print(" "); pw.print(user); pw.print(" serialNo="); pw.print(user.serialNumber); 1797 if (mRemovingUserIds.get(mUsers.keyAt(i))) pw.print(" <removing> "); 1798 if (user.partial) pw.print(" <partial>"); 1799 pw.println(); 1800 pw.print(" Created: "); 1801 if (user.creationTime == 0) { 1802 pw.println("<unknown>"); 1803 } else { 1804 sb.setLength(0); 1805 TimeUtils.formatDuration(now - user.creationTime, sb); 1806 sb.append(" ago"); 1807 pw.println(sb); 1808 } 1809 pw.print(" Last logged in: "); 1810 if (user.lastLoggedInTime == 0) { 1811 pw.println("<unknown>"); 1812 } else { 1813 sb.setLength(0); 1814 TimeUtils.formatDuration(now - user.lastLoggedInTime, sb); 1815 sb.append(" ago"); 1816 pw.println(sb); 1817 } 1818 } 1819 } 1820 } 1821 1822 final class MainHandler extends Handler { 1823 1824 @Override 1825 public void handleMessage(Message msg) { 1826 switch (msg.what) { 1827 case WRITE_USER_MSG: 1828 removeMessages(WRITE_USER_MSG, msg.obj); 1829 synchronized (mPackagesLock) { 1830 int userId = ((UserInfo) msg.obj).id; 1831 UserInfo userInfo = mUsers.get(userId); 1832 if (userInfo != null) { 1833 writeUserLocked(userInfo); 1834 } 1835 } 1836 } 1837 } 1838 } 1839} 1840