UserManagerService.java revision ef24909d84db9d5aefb825ee1556089fcdcc1678
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 // Prune out any partially created/partially removed users. 214 ArrayList<UserInfo> partials = new ArrayList<UserInfo>(); 215 for (int i = 0; i < mUsers.size(); i++) { 216 UserInfo ui = mUsers.valueAt(i); 217 if ((ui.partial || ui.guestToRemove) && i != 0) { 218 partials.add(ui); 219 } 220 } 221 for (int i = 0; i < partials.size(); i++) { 222 UserInfo ui = partials.get(i); 223 Slog.w(LOG_TAG, "Removing partially created user #" + i 224 + " (name=" + ui.name + ")"); 225 removeUserStateLocked(ui.id); 226 } 227 sInstance = this; 228 } 229 } 230 } 231 232 void systemReady() { 233 userForeground(UserHandle.USER_OWNER); 234 mAppOpsService = IAppOpsService.Stub.asInterface( 235 ServiceManager.getService(Context.APP_OPS_SERVICE)); 236 for (int i = 0; i < mUserIds.length; ++i) { 237 try { 238 mAppOpsService.setUserRestrictions(mUserRestrictions.get(mUserIds[i]), mUserIds[i]); 239 } catch (RemoteException e) { 240 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 241 } 242 } 243 } 244 245 @Override 246 public List<UserInfo> getUsers(boolean excludeDying) { 247 checkManageUsersPermission("query users"); 248 synchronized (mPackagesLock) { 249 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 250 for (int i = 0; i < mUsers.size(); i++) { 251 UserInfo ui = mUsers.valueAt(i); 252 if (ui.partial) { 253 continue; 254 } 255 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 256 users.add(ui); 257 } 258 } 259 return users; 260 } 261 } 262 263 @Override 264 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 265 if (userId != UserHandle.getCallingUserId()) { 266 checkManageUsersPermission("getting profiles related to user " + userId); 267 } 268 final long ident = Binder.clearCallingIdentity(); 269 try { 270 synchronized (mPackagesLock) { 271 return getProfilesLocked(userId, enabledOnly); 272 } 273 } finally { 274 Binder.restoreCallingIdentity(ident); 275 } 276 } 277 278 /** Assume permissions already checked and caller's identity cleared */ 279 private List<UserInfo> getProfilesLocked(int userId, boolean enabledOnly) { 280 UserInfo user = getUserInfoLocked(userId); 281 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 282 if (user == null) { 283 // Probably a dying user 284 return users; 285 } 286 for (int i = 0; i < mUsers.size(); i++) { 287 UserInfo profile = mUsers.valueAt(i); 288 if (!isProfileOf(user, profile)) { 289 continue; 290 } 291 if (enabledOnly && !profile.isEnabled()) { 292 continue; 293 } 294 if (mRemovingUserIds.get(profile.id)) { 295 continue; 296 } 297 users.add(profile); 298 } 299 return users; 300 } 301 302 @Override 303 public UserInfo getProfileParent(int userHandle) { 304 checkManageUsersPermission("get the profile parent"); 305 synchronized (mPackagesLock) { 306 return getProfileParentLocked(userHandle); 307 } 308 } 309 310 private UserInfo getProfileParentLocked(int userHandle) { 311 UserInfo profile = getUserInfoLocked(userHandle); 312 if (profile == null) { 313 return null; 314 } 315 int parentUserId = profile.profileGroupId; 316 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 317 return null; 318 } else { 319 return getUserInfoLocked(parentUserId); 320 } 321 } 322 323 private boolean isProfileOf(UserInfo user, UserInfo profile) { 324 return user.id == profile.id || 325 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 326 && user.profileGroupId == profile.profileGroupId); 327 } 328 329 @Override 330 public void setUserEnabled(int userId) { 331 checkManageUsersPermission("enable user"); 332 synchronized (mPackagesLock) { 333 UserInfo info = getUserInfoLocked(userId); 334 if (info != null && !info.isEnabled()) { 335 info.flags ^= UserInfo.FLAG_DISABLED; 336 writeUserLocked(info); 337 } 338 } 339 } 340 341 @Override 342 public UserInfo getUserInfo(int userId) { 343 checkManageUsersPermission("query user"); 344 synchronized (mPackagesLock) { 345 return getUserInfoLocked(userId); 346 } 347 } 348 349 @Override 350 public boolean isRestricted() { 351 synchronized (mPackagesLock) { 352 return getUserInfoLocked(UserHandle.getCallingUserId()).isRestricted(); 353 } 354 } 355 356 /* 357 * Should be locked on mUsers before calling this. 358 */ 359 private UserInfo getUserInfoLocked(int userId) { 360 UserInfo ui = mUsers.get(userId); 361 // If it is partial and not in the process of being removed, return as unknown user. 362 if (ui != null && ui.partial && !mRemovingUserIds.get(userId)) { 363 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 364 return null; 365 } 366 return ui; 367 } 368 369 public boolean exists(int userId) { 370 synchronized (mPackagesLock) { 371 return ArrayUtils.contains(mUserIds, userId); 372 } 373 } 374 375 @Override 376 public void setUserName(int userId, String name) { 377 checkManageUsersPermission("rename users"); 378 boolean changed = false; 379 synchronized (mPackagesLock) { 380 UserInfo info = mUsers.get(userId); 381 if (info == null || info.partial) { 382 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 383 return; 384 } 385 if (name != null && !name.equals(info.name)) { 386 info.name = name; 387 writeUserLocked(info); 388 changed = true; 389 } 390 } 391 if (changed) { 392 sendUserInfoChangedBroadcast(userId); 393 } 394 } 395 396 @Override 397 public void setUserIcon(int userId, Bitmap bitmap) { 398 checkManageUsersPermission("update users"); 399 long ident = Binder.clearCallingIdentity(); 400 try { 401 synchronized (mPackagesLock) { 402 UserInfo info = mUsers.get(userId); 403 if (info == null || info.partial) { 404 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 405 return; 406 } 407 writeBitmapLocked(info, bitmap); 408 writeUserLocked(info); 409 } 410 sendUserInfoChangedBroadcast(userId); 411 } finally { 412 Binder.restoreCallingIdentity(ident); 413 } 414 } 415 416 private void sendUserInfoChangedBroadcast(int userId) { 417 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 418 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 419 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 420 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 421 } 422 423 @Override 424 public ParcelFileDescriptor getUserIcon(int userId) { 425 String iconPath; 426 synchronized (mPackagesLock) { 427 UserInfo info = mUsers.get(userId); 428 if (info == null || info.partial) { 429 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + userId); 430 return null; 431 } 432 int callingGroupId = mUsers.get(UserHandle.getCallingUserId()).profileGroupId; 433 if (callingGroupId == UserInfo.NO_PROFILE_GROUP_ID 434 || callingGroupId != info.profileGroupId) { 435 checkManageUsersPermission("get the icon of a user who is not related"); 436 } 437 if (info.iconPath == null) { 438 return null; 439 } 440 iconPath = info.iconPath; 441 } 442 443 try { 444 return ParcelFileDescriptor.open( 445 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 446 } catch (FileNotFoundException e) { 447 Log.e(LOG_TAG, "Couldn't find icon file", e); 448 } 449 return null; 450 } 451 452 public void makeInitialized(int userId) { 453 checkManageUsersPermission("makeInitialized"); 454 synchronized (mPackagesLock) { 455 UserInfo info = mUsers.get(userId); 456 if (info == null || info.partial) { 457 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 458 } 459 if ((info.flags&UserInfo.FLAG_INITIALIZED) == 0) { 460 info.flags |= UserInfo.FLAG_INITIALIZED; 461 scheduleWriteUserLocked(info); 462 } 463 } 464 } 465 466 /** 467 * If default guest restrictions haven't been initialized yet, add the basic 468 * restrictions. 469 */ 470 private void initDefaultGuestRestrictions() { 471 if (mGuestRestrictions.isEmpty()) { 472 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 473 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 474 } 475 } 476 477 @Override 478 public Bundle getDefaultGuestRestrictions() { 479 checkManageUsersPermission("getDefaultGuestRestrictions"); 480 synchronized (mPackagesLock) { 481 return new Bundle(mGuestRestrictions); 482 } 483 } 484 485 @Override 486 public void setDefaultGuestRestrictions(Bundle restrictions) { 487 checkManageUsersPermission("setDefaultGuestRestrictions"); 488 synchronized (mPackagesLock) { 489 mGuestRestrictions.clear(); 490 mGuestRestrictions.putAll(restrictions); 491 writeUserListLocked(); 492 } 493 } 494 495 @Override 496 public boolean hasUserRestriction(String restrictionKey, int userId) { 497 synchronized (mPackagesLock) { 498 Bundle restrictions = mUserRestrictions.get(userId); 499 return restrictions != null ? restrictions.getBoolean(restrictionKey) : false; 500 } 501 } 502 503 @Override 504 public Bundle getUserRestrictions(int userId) { 505 // checkManageUsersPermission("getUserRestrictions"); 506 507 synchronized (mPackagesLock) { 508 Bundle restrictions = mUserRestrictions.get(userId); 509 return restrictions != null ? new Bundle(restrictions) : new Bundle(); 510 } 511 } 512 513 @Override 514 public void setUserRestrictions(Bundle restrictions, int userId) { 515 checkManageUsersPermission("setUserRestrictions"); 516 if (restrictions == null) return; 517 518 synchronized (mPackagesLock) { 519 mUserRestrictions.get(userId).clear(); 520 mUserRestrictions.get(userId).putAll(restrictions); 521 long token = Binder.clearCallingIdentity(); 522 try { 523 mAppOpsService.setUserRestrictions(mUserRestrictions.get(userId), userId); 524 } catch (RemoteException e) { 525 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 526 } finally { 527 Binder.restoreCallingIdentity(token); 528 } 529 scheduleWriteUserLocked(mUsers.get(userId)); 530 } 531 } 532 533 /** 534 * Check if we've hit the limit of how many users can be created. 535 */ 536 private boolean isUserLimitReachedLocked() { 537 int aliveUserCount = 0; 538 final int totalUserCount = mUsers.size(); 539 // Skip over users being removed 540 for (int i = 0; i < totalUserCount; i++) { 541 UserInfo user = mUsers.valueAt(i); 542 if (!mRemovingUserIds.get(user.id) 543 && !user.isGuest() && !user.partial) { 544 aliveUserCount++; 545 } 546 } 547 return aliveUserCount >= UserManager.getMaxSupportedUsers(); 548 } 549 550 /** 551 * Enforces that only the system UID or root's UID or apps that have the 552 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 553 * permission can make certain calls to the UserManager. 554 * 555 * @param message used as message if SecurityException is thrown 556 * @throws SecurityException if the caller is not system or root 557 */ 558 private static final void checkManageUsersPermission(String message) { 559 final int uid = Binder.getCallingUid(); 560 if (uid != Process.SYSTEM_UID && uid != 0 561 && ActivityManager.checkComponentPermission( 562 android.Manifest.permission.MANAGE_USERS, 563 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 564 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 565 } 566 } 567 568 private void writeBitmapLocked(UserInfo info, Bitmap bitmap) { 569 try { 570 File dir = new File(mUsersDir, Integer.toString(info.id)); 571 File file = new File(dir, USER_PHOTO_FILENAME); 572 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 573 if (!dir.exists()) { 574 dir.mkdir(); 575 FileUtils.setPermissions( 576 dir.getPath(), 577 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 578 -1, -1); 579 } 580 FileOutputStream os; 581 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 582 && tmp.renameTo(file)) { 583 info.iconPath = file.getAbsolutePath(); 584 } 585 try { 586 os.close(); 587 } catch (IOException ioe) { 588 // What the ... ! 589 } 590 tmp.delete(); 591 } catch (FileNotFoundException e) { 592 Slog.w(LOG_TAG, "Error setting photo for user ", e); 593 } 594 } 595 596 /** 597 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 598 * cache it elsewhere. 599 * @return the array of user ids. 600 */ 601 public int[] getUserIds() { 602 synchronized (mPackagesLock) { 603 return mUserIds; 604 } 605 } 606 607 int[] getUserIdsLPr() { 608 return mUserIds; 609 } 610 611 private void readUserListLocked() { 612 if (!mUserListFile.exists()) { 613 fallbackToSingleUserLocked(); 614 return; 615 } 616 FileInputStream fis = null; 617 AtomicFile userListFile = new AtomicFile(mUserListFile); 618 try { 619 fis = userListFile.openRead(); 620 XmlPullParser parser = Xml.newPullParser(); 621 parser.setInput(fis, null); 622 int type; 623 while ((type = parser.next()) != XmlPullParser.START_TAG 624 && type != XmlPullParser.END_DOCUMENT) { 625 ; 626 } 627 628 if (type != XmlPullParser.START_TAG) { 629 Slog.e(LOG_TAG, "Unable to read user list"); 630 fallbackToSingleUserLocked(); 631 return; 632 } 633 634 mNextSerialNumber = -1; 635 if (parser.getName().equals(TAG_USERS)) { 636 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 637 if (lastSerialNumber != null) { 638 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 639 } 640 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 641 if (versionNumber != null) { 642 mUserVersion = Integer.parseInt(versionNumber); 643 } 644 } 645 646 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 647 if (type == XmlPullParser.START_TAG) { 648 final String name = parser.getName(); 649 if (name.equals(TAG_USER)) { 650 String id = parser.getAttributeValue(null, ATTR_ID); 651 UserInfo user = readUserLocked(Integer.parseInt(id)); 652 653 if (user != null) { 654 mUsers.put(user.id, user); 655 if (mNextSerialNumber < 0 || mNextSerialNumber <= user.id) { 656 mNextSerialNumber = user.id + 1; 657 } 658 } 659 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 660 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 661 && type != XmlPullParser.END_TAG) { 662 if (type == XmlPullParser.START_TAG) { 663 if (parser.getName().equals(TAG_RESTRICTIONS)) { 664 readRestrictionsLocked(parser, mGuestRestrictions); 665 } 666 break; 667 } 668 } 669 } 670 } 671 } 672 updateUserIdsLocked(); 673 upgradeIfNecessaryLocked(); 674 } catch (IOException ioe) { 675 fallbackToSingleUserLocked(); 676 } catch (XmlPullParserException pe) { 677 fallbackToSingleUserLocked(); 678 } finally { 679 if (fis != null) { 680 try { 681 fis.close(); 682 } catch (IOException e) { 683 } 684 } 685 } 686 } 687 688 /** 689 * Upgrade steps between versions, either for fixing bugs or changing the data format. 690 */ 691 private void upgradeIfNecessaryLocked() { 692 int userVersion = mUserVersion; 693 if (userVersion < 1) { 694 // Assign a proper name for the owner, if not initialized correctly before 695 UserInfo user = mUsers.get(UserHandle.USER_OWNER); 696 if ("Primary".equals(user.name)) { 697 user.name = mContext.getResources().getString(com.android.internal.R.string.owner_name); 698 scheduleWriteUserLocked(user); 699 } 700 userVersion = 1; 701 } 702 703 if (userVersion < 2) { 704 // Owner should be marked as initialized 705 UserInfo user = mUsers.get(UserHandle.USER_OWNER); 706 if ((user.flags & UserInfo.FLAG_INITIALIZED) == 0) { 707 user.flags |= UserInfo.FLAG_INITIALIZED; 708 scheduleWriteUserLocked(user); 709 } 710 userVersion = 2; 711 } 712 713 714 if (userVersion < 4) { 715 userVersion = 4; 716 } 717 718 if (userVersion < 5) { 719 initDefaultGuestRestrictions(); 720 userVersion = 5; 721 } 722 723 if (userVersion < USER_VERSION) { 724 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 725 + USER_VERSION); 726 } else { 727 mUserVersion = userVersion; 728 writeUserListLocked(); 729 } 730 } 731 732 private void fallbackToSingleUserLocked() { 733 // Create the primary user 734 UserInfo primary = new UserInfo(UserHandle.USER_OWNER, 735 mContext.getResources().getString(com.android.internal.R.string.owner_name), null, 736 UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY | UserInfo.FLAG_INITIALIZED); 737 mUsers.put(0, primary); 738 mNextSerialNumber = MIN_USER_ID; 739 mUserVersion = USER_VERSION; 740 741 Bundle restrictions = new Bundle(); 742 mUserRestrictions.append(UserHandle.USER_OWNER, restrictions); 743 744 updateUserIdsLocked(); 745 initDefaultGuestRestrictions(); 746 747 writeUserListLocked(); 748 writeUserLocked(primary); 749 } 750 751 private void scheduleWriteUserLocked(UserInfo userInfo) { 752 if (!mHandler.hasMessages(WRITE_USER_MSG, userInfo)) { 753 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, userInfo); 754 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 755 } 756 } 757 758 /* 759 * Writes the user file in this format: 760 * 761 * <user flags="20039023" id="0"> 762 * <name>Primary</name> 763 * </user> 764 */ 765 private void writeUserLocked(UserInfo userInfo) { 766 FileOutputStream fos = null; 767 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userInfo.id + XML_SUFFIX)); 768 try { 769 fos = userFile.startWrite(); 770 final BufferedOutputStream bos = new BufferedOutputStream(fos); 771 772 // XmlSerializer serializer = XmlUtils.serializerInstance(); 773 final XmlSerializer serializer = new FastXmlSerializer(); 774 serializer.setOutput(bos, "utf-8"); 775 serializer.startDocument(null, true); 776 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 777 778 serializer.startTag(null, TAG_USER); 779 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 780 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 781 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 782 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 783 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 784 Long.toString(userInfo.lastLoggedInTime)); 785 if (userInfo.iconPath != null) { 786 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 787 } 788 if (userInfo.partial) { 789 serializer.attribute(null, ATTR_PARTIAL, "true"); 790 } 791 if (userInfo.guestToRemove) { 792 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 793 } 794 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 795 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 796 Integer.toString(userInfo.profileGroupId)); 797 } 798 799 serializer.startTag(null, TAG_NAME); 800 serializer.text(userInfo.name); 801 serializer.endTag(null, TAG_NAME); 802 Bundle restrictions = mUserRestrictions.get(userInfo.id); 803 if (restrictions != null) { 804 writeRestrictionsLocked(serializer, restrictions); 805 } 806 serializer.endTag(null, TAG_USER); 807 808 serializer.endDocument(); 809 userFile.finishWrite(fos); 810 } catch (Exception ioe) { 811 Slog.e(LOG_TAG, "Error writing user info " + userInfo.id + "\n" + ioe); 812 userFile.failWrite(fos); 813 } 814 } 815 816 /* 817 * Writes the user list file in this format: 818 * 819 * <users nextSerialNumber="3"> 820 * <user id="0"></user> 821 * <user id="2"></user> 822 * </users> 823 */ 824 private void writeUserListLocked() { 825 FileOutputStream fos = null; 826 AtomicFile userListFile = new AtomicFile(mUserListFile); 827 try { 828 fos = userListFile.startWrite(); 829 final BufferedOutputStream bos = new BufferedOutputStream(fos); 830 831 // XmlSerializer serializer = XmlUtils.serializerInstance(); 832 final XmlSerializer serializer = new FastXmlSerializer(); 833 serializer.setOutput(bos, "utf-8"); 834 serializer.startDocument(null, true); 835 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 836 837 serializer.startTag(null, TAG_USERS); 838 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 839 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 840 841 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 842 writeRestrictionsLocked(serializer, mGuestRestrictions); 843 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 844 for (int i = 0; i < mUsers.size(); i++) { 845 UserInfo user = mUsers.valueAt(i); 846 serializer.startTag(null, TAG_USER); 847 serializer.attribute(null, ATTR_ID, Integer.toString(user.id)); 848 serializer.endTag(null, TAG_USER); 849 } 850 851 serializer.endTag(null, TAG_USERS); 852 853 serializer.endDocument(); 854 userListFile.finishWrite(fos); 855 } catch (Exception e) { 856 userListFile.failWrite(fos); 857 Slog.e(LOG_TAG, "Error writing user list"); 858 } 859 } 860 861 private void writeRestrictionsLocked(XmlSerializer serializer, Bundle restrictions) 862 throws IOException { 863 serializer.startTag(null, TAG_RESTRICTIONS); 864 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_WIFI); 865 writeBoolean(serializer, restrictions, UserManager.DISALLOW_MODIFY_ACCOUNTS); 866 writeBoolean(serializer, restrictions, UserManager.DISALLOW_INSTALL_APPS); 867 writeBoolean(serializer, restrictions, UserManager.DISALLOW_UNINSTALL_APPS); 868 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SHARE_LOCATION); 869 writeBoolean(serializer, restrictions, 870 UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES); 871 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_BLUETOOTH); 872 writeBoolean(serializer, restrictions, UserManager.DISALLOW_USB_FILE_TRANSFER); 873 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_CREDENTIALS); 874 writeBoolean(serializer, restrictions, UserManager.DISALLOW_REMOVE_USER); 875 writeBoolean(serializer, restrictions, UserManager.DISALLOW_DEBUGGING_FEATURES); 876 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_VPN); 877 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_TETHERING); 878 writeBoolean(serializer, restrictions, UserManager.DISALLOW_FACTORY_RESET); 879 writeBoolean(serializer, restrictions, UserManager.DISALLOW_ADD_USER); 880 writeBoolean(serializer, restrictions, UserManager.ENSURE_VERIFY_APPS); 881 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_CELL_BROADCASTS); 882 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS); 883 writeBoolean(serializer, restrictions, UserManager.DISALLOW_APPS_CONTROL); 884 writeBoolean(serializer, restrictions, UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA); 885 writeBoolean(serializer, restrictions, UserManager.DISALLOW_UNMUTE_MICROPHONE); 886 writeBoolean(serializer, restrictions, UserManager.DISALLOW_ADJUST_VOLUME); 887 writeBoolean(serializer, restrictions, UserManager.DISALLOW_OUTGOING_CALLS); 888 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SMS); 889 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CREATE_WINDOWS); 890 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE); 891 writeBoolean(serializer, restrictions, UserManager.DISALLOW_OUTGOING_BEAM); 892 writeBoolean(serializer, restrictions, UserManager.DISALLOW_WALLPAPER); 893 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SAFE_BOOT); 894 serializer.endTag(null, TAG_RESTRICTIONS); 895 } 896 897 private UserInfo readUserLocked(int id) { 898 int flags = 0; 899 int serialNumber = id; 900 String name = null; 901 String iconPath = null; 902 long creationTime = 0L; 903 long lastLoggedInTime = 0L; 904 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 905 boolean partial = false; 906 boolean guestToRemove = false; 907 Bundle restrictions = new Bundle(); 908 909 FileInputStream fis = null; 910 try { 911 AtomicFile userFile = 912 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 913 fis = userFile.openRead(); 914 XmlPullParser parser = Xml.newPullParser(); 915 parser.setInput(fis, null); 916 int type; 917 while ((type = parser.next()) != XmlPullParser.START_TAG 918 && type != XmlPullParser.END_DOCUMENT) { 919 ; 920 } 921 922 if (type != XmlPullParser.START_TAG) { 923 Slog.e(LOG_TAG, "Unable to read user " + id); 924 return null; 925 } 926 927 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 928 int storedId = readIntAttribute(parser, ATTR_ID, -1); 929 if (storedId != id) { 930 Slog.e(LOG_TAG, "User id does not match the file name"); 931 return null; 932 } 933 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 934 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 935 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 936 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 937 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 938 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 939 UserInfo.NO_PROFILE_GROUP_ID); 940 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 941 if ("true".equals(valueString)) { 942 partial = true; 943 } 944 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 945 if ("true".equals(valueString)) { 946 guestToRemove = true; 947 } 948 949 int outerDepth = parser.getDepth(); 950 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 951 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 952 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 953 continue; 954 } 955 String tag = parser.getName(); 956 if (TAG_NAME.equals(tag)) { 957 type = parser.next(); 958 if (type == XmlPullParser.TEXT) { 959 name = parser.getText(); 960 } 961 } else if (TAG_RESTRICTIONS.equals(tag)) { 962 readRestrictionsLocked(parser, restrictions); 963 } 964 } 965 } 966 967 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 968 userInfo.serialNumber = serialNumber; 969 userInfo.creationTime = creationTime; 970 userInfo.lastLoggedInTime = lastLoggedInTime; 971 userInfo.partial = partial; 972 userInfo.guestToRemove = guestToRemove; 973 userInfo.profileGroupId = profileGroupId; 974 mUserRestrictions.append(id, restrictions); 975 return userInfo; 976 977 } catch (IOException ioe) { 978 } catch (XmlPullParserException pe) { 979 } finally { 980 if (fis != null) { 981 try { 982 fis.close(); 983 } catch (IOException e) { 984 } 985 } 986 } 987 return null; 988 } 989 990 private void readRestrictionsLocked(XmlPullParser parser, Bundle restrictions) 991 throws IOException { 992 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_WIFI); 993 readBoolean(parser, restrictions, UserManager.DISALLOW_MODIFY_ACCOUNTS); 994 readBoolean(parser, restrictions, UserManager.DISALLOW_INSTALL_APPS); 995 readBoolean(parser, restrictions, UserManager.DISALLOW_UNINSTALL_APPS); 996 readBoolean(parser, restrictions, UserManager.DISALLOW_SHARE_LOCATION); 997 readBoolean(parser, restrictions, 998 UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES); 999 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_BLUETOOTH); 1000 readBoolean(parser, restrictions, UserManager.DISALLOW_USB_FILE_TRANSFER); 1001 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_CREDENTIALS); 1002 readBoolean(parser, restrictions, UserManager.DISALLOW_REMOVE_USER); 1003 readBoolean(parser, restrictions, UserManager.DISALLOW_DEBUGGING_FEATURES); 1004 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_VPN); 1005 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_TETHERING); 1006 readBoolean(parser, restrictions, UserManager.DISALLOW_FACTORY_RESET); 1007 readBoolean(parser, restrictions, UserManager.DISALLOW_ADD_USER); 1008 readBoolean(parser, restrictions, UserManager.ENSURE_VERIFY_APPS); 1009 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_CELL_BROADCASTS); 1010 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS); 1011 readBoolean(parser, restrictions, UserManager.DISALLOW_APPS_CONTROL); 1012 readBoolean(parser, restrictions, 1013 UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA); 1014 readBoolean(parser, restrictions, UserManager.DISALLOW_UNMUTE_MICROPHONE); 1015 readBoolean(parser, restrictions, UserManager.DISALLOW_ADJUST_VOLUME); 1016 readBoolean(parser, restrictions, UserManager.DISALLOW_OUTGOING_CALLS); 1017 readBoolean(parser, restrictions, UserManager.DISALLOW_SMS); 1018 readBoolean(parser, restrictions, UserManager.DISALLOW_CREATE_WINDOWS); 1019 readBoolean(parser, restrictions, UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE); 1020 readBoolean(parser, restrictions, UserManager.DISALLOW_OUTGOING_BEAM); 1021 readBoolean(parser, restrictions, UserManager.DISALLOW_WALLPAPER); 1022 readBoolean(parser, restrictions, UserManager.DISALLOW_SAFE_BOOT); 1023 } 1024 1025 private void readBoolean(XmlPullParser parser, Bundle restrictions, 1026 String restrictionKey) { 1027 String value = parser.getAttributeValue(null, restrictionKey); 1028 if (value != null) { 1029 restrictions.putBoolean(restrictionKey, Boolean.parseBoolean(value)); 1030 } 1031 } 1032 1033 private void writeBoolean(XmlSerializer xml, Bundle restrictions, String restrictionKey) 1034 throws IOException { 1035 if (restrictions.containsKey(restrictionKey)) { 1036 xml.attribute(null, restrictionKey, 1037 Boolean.toString(restrictions.getBoolean(restrictionKey))); 1038 } 1039 } 1040 1041 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1042 String valueString = parser.getAttributeValue(null, attr); 1043 if (valueString == null) return defaultValue; 1044 try { 1045 return Integer.parseInt(valueString); 1046 } catch (NumberFormatException nfe) { 1047 return defaultValue; 1048 } 1049 } 1050 1051 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1052 String valueString = parser.getAttributeValue(null, attr); 1053 if (valueString == null) return defaultValue; 1054 try { 1055 return Long.parseLong(valueString); 1056 } catch (NumberFormatException nfe) { 1057 return defaultValue; 1058 } 1059 } 1060 1061 private boolean isPackageInstalled(String pkg, int userId) { 1062 final ApplicationInfo info = mPm.getApplicationInfo(pkg, 1063 PackageManager.GET_UNINSTALLED_PACKAGES, 1064 userId); 1065 if (info == null || (info.flags&ApplicationInfo.FLAG_INSTALLED) == 0) { 1066 return false; 1067 } 1068 return true; 1069 } 1070 1071 /** 1072 * Removes all the restrictions files (res_<packagename>) for a given user. 1073 * Does not do any permissions checking. 1074 */ 1075 private void cleanAppRestrictions(int userId) { 1076 synchronized (mPackagesLock) { 1077 File dir = Environment.getUserSystemDirectory(userId); 1078 String[] files = dir.list(); 1079 if (files == null) return; 1080 for (String fileName : files) { 1081 if (fileName.startsWith(RESTRICTIONS_FILE_PREFIX)) { 1082 File resFile = new File(dir, fileName); 1083 if (resFile.exists()) { 1084 resFile.delete(); 1085 } 1086 } 1087 } 1088 } 1089 } 1090 1091 /** 1092 * Removes the app restrictions file for a specific package and user id, if it exists. 1093 */ 1094 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1095 synchronized (mPackagesLock) { 1096 File dir = Environment.getUserSystemDirectory(userId); 1097 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1098 if (resFile.exists()) { 1099 resFile.delete(); 1100 } 1101 } 1102 } 1103 1104 @Override 1105 public UserInfo createProfileForUser(String name, int flags, int userId) { 1106 checkManageUsersPermission("Only the system can create users"); 1107 if (userId != UserHandle.USER_OWNER) { 1108 Slog.w(LOG_TAG, "Only user owner can have profiles"); 1109 return null; 1110 } 1111 return createUserInternal(name, flags, userId); 1112 } 1113 1114 @Override 1115 public UserInfo createUser(String name, int flags) { 1116 checkManageUsersPermission("Only the system can create users"); 1117 return createUserInternal(name, flags, UserHandle.USER_NULL); 1118 } 1119 1120 private UserInfo createUserInternal(String name, int flags, int parentId) { 1121 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1122 UserManager.DISALLOW_ADD_USER, false)) { 1123 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1124 return null; 1125 } 1126 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1127 final long ident = Binder.clearCallingIdentity(); 1128 UserInfo userInfo = null; 1129 try { 1130 synchronized (mInstallLock) { 1131 synchronized (mPackagesLock) { 1132 UserInfo parent = null; 1133 if (parentId != UserHandle.USER_NULL) { 1134 parent = getUserInfoLocked(parentId); 1135 if (parent == null) return null; 1136 } 1137 // If we're not adding a guest user and the limit has been reached, 1138 // cannot add a user. 1139 if (!isGuest && isUserLimitReachedLocked()) { 1140 return null; 1141 } 1142 // If we're adding a guest and there already exists one, bail. 1143 if (isGuest && findCurrentGuestUserLocked() != null) { 1144 return null; 1145 } 1146 // Limit number of managed profiles that can be created 1147 if ((flags & UserInfo.FLAG_MANAGED_PROFILE) != 0 1148 && numberOfUsersOfTypeLocked(UserInfo.FLAG_MANAGED_PROFILE, true) 1149 >= MAX_MANAGED_PROFILES) { 1150 return null; 1151 } 1152 int userId = getNextAvailableIdLocked(); 1153 userInfo = new UserInfo(userId, name, null, flags); 1154 File userPath = new File(mBaseUserPath, Integer.toString(userId)); 1155 userInfo.serialNumber = mNextSerialNumber++; 1156 long now = System.currentTimeMillis(); 1157 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1158 userInfo.partial = true; 1159 Environment.getUserSystemDirectory(userInfo.id).mkdirs(); 1160 mUsers.put(userId, userInfo); 1161 writeUserListLocked(); 1162 if (parent != null) { 1163 if (parent.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1164 parent.profileGroupId = parent.id; 1165 scheduleWriteUserLocked(parent); 1166 } 1167 userInfo.profileGroupId = parent.profileGroupId; 1168 } 1169 mPm.createNewUserLILPw(userId, userPath); 1170 userInfo.partial = false; 1171 scheduleWriteUserLocked(userInfo); 1172 updateUserIdsLocked(); 1173 Bundle restrictions = new Bundle(); 1174 mUserRestrictions.append(userId, restrictions); 1175 mPm.newUserCreatedLILPw(userId); 1176 } 1177 } 1178 if (userInfo != null) { 1179 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 1180 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userInfo.id); 1181 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 1182 android.Manifest.permission.MANAGE_USERS); 1183 } 1184 } finally { 1185 Binder.restoreCallingIdentity(ident); 1186 } 1187 return userInfo; 1188 } 1189 1190 private int numberOfUsersOfTypeLocked(int flags, boolean excludeDying) { 1191 int count = 0; 1192 for (int i = mUsers.size() - 1; i >= 0; i--) { 1193 UserInfo user = mUsers.valueAt(i); 1194 if (!excludeDying || !mRemovingUserIds.get(user.id)) { 1195 if ((user.flags & flags) != 0) { 1196 count++; 1197 } 1198 } 1199 } 1200 return count; 1201 } 1202 1203 /** 1204 * Find the current guest user. If the Guest user is partial, 1205 * then do not include it in the results as it is about to die. 1206 * This is different than {@link #numberOfUsersOfTypeLocked(int, boolean)} due to 1207 * the special handling of Guests being removed. 1208 */ 1209 private UserInfo findCurrentGuestUserLocked() { 1210 final int size = mUsers.size(); 1211 for (int i = 0; i < size; i++) { 1212 final UserInfo user = mUsers.valueAt(i); 1213 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 1214 return user; 1215 } 1216 } 1217 return null; 1218 } 1219 1220 /** 1221 * Mark this guest user for deletion to allow us to create another guest 1222 * and switch to that user before actually removing this guest. 1223 * @param userHandle the userid of the current guest 1224 * @return whether the user could be marked for deletion 1225 */ 1226 public boolean markGuestForDeletion(int userHandle) { 1227 checkManageUsersPermission("Only the system can remove users"); 1228 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1229 UserManager.DISALLOW_REMOVE_USER, false)) { 1230 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1231 return false; 1232 } 1233 1234 long ident = Binder.clearCallingIdentity(); 1235 try { 1236 final UserInfo user; 1237 synchronized (mPackagesLock) { 1238 user = mUsers.get(userHandle); 1239 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1240 return false; 1241 } 1242 if (!user.isGuest()) { 1243 return false; 1244 } 1245 // We set this to a guest user that is to be removed. This is a temporary state 1246 // where we are allowed to add new Guest users, even if this one is still not 1247 // removed. This user will still show up in getUserInfo() calls. 1248 // If we don't get around to removing this Guest user, it will be purged on next 1249 // startup. 1250 user.guestToRemove = true; 1251 // Mark it as disabled, so that it isn't returned any more when 1252 // profiles are queried. 1253 user.flags |= UserInfo.FLAG_DISABLED; 1254 writeUserLocked(user); 1255 } 1256 } finally { 1257 Binder.restoreCallingIdentity(ident); 1258 } 1259 return true; 1260 } 1261 1262 /** 1263 * Removes a user and all data directories created for that user. This method should be called 1264 * after the user's processes have been terminated. 1265 * @param userHandle the user's id 1266 */ 1267 public boolean removeUser(int userHandle) { 1268 checkManageUsersPermission("Only the system can remove users"); 1269 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1270 UserManager.DISALLOW_REMOVE_USER, false)) { 1271 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1272 return false; 1273 } 1274 1275 long ident = Binder.clearCallingIdentity(); 1276 try { 1277 final UserInfo user; 1278 synchronized (mPackagesLock) { 1279 user = mUsers.get(userHandle); 1280 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1281 return false; 1282 } 1283 1284 // We remember deleted user IDs to prevent them from being 1285 // reused during the current boot; they can still be reused 1286 // after a reboot. 1287 mRemovingUserIds.put(userHandle, true); 1288 1289 try { 1290 mAppOpsService.removeUser(userHandle); 1291 } catch (RemoteException e) { 1292 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 1293 } 1294 // Set this to a partially created user, so that the user will be purged 1295 // on next startup, in case the runtime stops now before stopping and 1296 // removing the user completely. 1297 user.partial = true; 1298 // Mark it as disabled, so that it isn't returned any more when 1299 // profiles are queried. 1300 user.flags |= UserInfo.FLAG_DISABLED; 1301 writeUserLocked(user); 1302 } 1303 1304 if (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 1305 && user.isManagedProfile()) { 1306 // Send broadcast to notify system that the user removed was a 1307 // managed user. 1308 sendProfileRemovedBroadcast(user.profileGroupId, user.id); 1309 } 1310 1311 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 1312 int res; 1313 try { 1314 res = ActivityManagerNative.getDefault().stopUser(userHandle, 1315 new IStopUserCallback.Stub() { 1316 @Override 1317 public void userStopped(int userId) { 1318 finishRemoveUser(userId); 1319 } 1320 @Override 1321 public void userStopAborted(int userId) { 1322 } 1323 }); 1324 } catch (RemoteException e) { 1325 return false; 1326 } 1327 return res == ActivityManager.USER_OP_SUCCESS; 1328 } finally { 1329 Binder.restoreCallingIdentity(ident); 1330 } 1331 } 1332 1333 void finishRemoveUser(final int userHandle) { 1334 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 1335 // Let other services shutdown any activity and clean up their state before completely 1336 // wiping the user's system directory and removing from the user list 1337 long ident = Binder.clearCallingIdentity(); 1338 try { 1339 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 1340 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 1341 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 1342 android.Manifest.permission.MANAGE_USERS, 1343 1344 new BroadcastReceiver() { 1345 @Override 1346 public void onReceive(Context context, Intent intent) { 1347 if (DBG) { 1348 Slog.i(LOG_TAG, 1349 "USER_REMOVED broadcast sent, cleaning up user data " 1350 + userHandle); 1351 } 1352 new Thread() { 1353 public void run() { 1354 synchronized (mInstallLock) { 1355 synchronized (mPackagesLock) { 1356 removeUserStateLocked(userHandle); 1357 } 1358 } 1359 } 1360 }.start(); 1361 } 1362 }, 1363 1364 null, Activity.RESULT_OK, null, null); 1365 } finally { 1366 Binder.restoreCallingIdentity(ident); 1367 } 1368 } 1369 1370 private void removeUserStateLocked(final int userHandle) { 1371 // Cleanup package manager settings 1372 mPm.cleanUpUserLILPw(this, userHandle); 1373 1374 // Remove this user from the list 1375 mUsers.remove(userHandle); 1376 // Remove user file 1377 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 1378 userFile.delete(); 1379 // Update the user list 1380 writeUserListLocked(); 1381 updateUserIdsLocked(); 1382 removeDirectoryRecursive(Environment.getUserSystemDirectory(userHandle)); 1383 } 1384 1385 private void removeDirectoryRecursive(File parent) { 1386 if (parent.isDirectory()) { 1387 String[] files = parent.list(); 1388 for (String filename : files) { 1389 File child = new File(parent, filename); 1390 removeDirectoryRecursive(child); 1391 } 1392 } 1393 parent.delete(); 1394 } 1395 1396 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 1397 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 1398 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 1399 Intent.FLAG_RECEIVER_FOREGROUND); 1400 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 1401 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 1402 } 1403 1404 @Override 1405 public Bundle getApplicationRestrictions(String packageName) { 1406 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 1407 } 1408 1409 @Override 1410 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 1411 if (UserHandle.getCallingUserId() != userId 1412 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 1413 checkManageUsersPermission("Only system can get restrictions for other users/apps"); 1414 } 1415 synchronized (mPackagesLock) { 1416 // Read the restrictions from XML 1417 return readApplicationRestrictionsLocked(packageName, userId); 1418 } 1419 } 1420 1421 @Override 1422 public void setApplicationRestrictions(String packageName, Bundle restrictions, 1423 int userId) { 1424 if (UserHandle.getCallingUserId() != userId 1425 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 1426 checkManageUsersPermission("Only system can set restrictions for other users/apps"); 1427 } 1428 synchronized (mPackagesLock) { 1429 if (restrictions == null || restrictions.isEmpty()) { 1430 cleanAppRestrictionsForPackage(packageName, userId); 1431 } else { 1432 // Write the restrictions to XML 1433 writeApplicationRestrictionsLocked(packageName, restrictions, userId); 1434 } 1435 } 1436 1437 if (isPackageInstalled(packageName, userId)) { 1438 // Notify package of changes via an intent - only sent to explicitly registered receivers. 1439 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 1440 changeIntent.setPackage(packageName); 1441 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1442 mContext.sendBroadcastAsUser(changeIntent, new UserHandle(userId)); 1443 } 1444 } 1445 1446 @Override 1447 public void removeRestrictions() { 1448 checkManageUsersPermission("Only system can remove restrictions"); 1449 final int userHandle = UserHandle.getCallingUserId(); 1450 removeRestrictionsForUser(userHandle, true); 1451 } 1452 1453 private void removeRestrictionsForUser(final int userHandle, boolean unhideApps) { 1454 synchronized (mPackagesLock) { 1455 // Remove all user restrictions 1456 setUserRestrictions(new Bundle(), userHandle); 1457 // Remove any app restrictions 1458 cleanAppRestrictions(userHandle); 1459 } 1460 if (unhideApps) { 1461 unhideAllInstalledAppsForUser(userHandle); 1462 } 1463 } 1464 1465 private void unhideAllInstalledAppsForUser(final int userHandle) { 1466 mHandler.post(new Runnable() { 1467 @Override 1468 public void run() { 1469 List<ApplicationInfo> apps = 1470 mPm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES, 1471 userHandle).getList(); 1472 final long ident = Binder.clearCallingIdentity(); 1473 try { 1474 for (ApplicationInfo appInfo : apps) { 1475 if ((appInfo.flags & ApplicationInfo.FLAG_INSTALLED) != 0 1476 && (appInfo.privateFlags & ApplicationInfo.PRIVATE_FLAG_HIDDEN) 1477 != 0) { 1478 mPm.setApplicationHiddenSettingAsUser(appInfo.packageName, false, 1479 userHandle); 1480 } 1481 } 1482 } finally { 1483 Binder.restoreCallingIdentity(ident); 1484 } 1485 } 1486 }); 1487 } 1488 private int getUidForPackage(String packageName) { 1489 long ident = Binder.clearCallingIdentity(); 1490 try { 1491 return mContext.getPackageManager().getApplicationInfo(packageName, 1492 PackageManager.GET_UNINSTALLED_PACKAGES).uid; 1493 } catch (NameNotFoundException nnfe) { 1494 return -1; 1495 } finally { 1496 Binder.restoreCallingIdentity(ident); 1497 } 1498 } 1499 1500 private Bundle readApplicationRestrictionsLocked(String packageName, 1501 int userId) { 1502 AtomicFile restrictionsFile = 1503 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 1504 packageToRestrictionsFileName(packageName))); 1505 return readApplicationRestrictionsLocked(restrictionsFile); 1506 } 1507 1508 @VisibleForTesting 1509 static Bundle readApplicationRestrictionsLocked(AtomicFile restrictionsFile) { 1510 final Bundle restrictions = new Bundle(); 1511 final ArrayList<String> values = new ArrayList<>(); 1512 if (!restrictionsFile.getBaseFile().exists()) { 1513 return restrictions; 1514 } 1515 1516 FileInputStream fis = null; 1517 try { 1518 fis = restrictionsFile.openRead(); 1519 XmlPullParser parser = Xml.newPullParser(); 1520 parser.setInput(fis, null); 1521 XmlUtils.nextElement(parser); 1522 if (parser.getEventType() != XmlPullParser.START_TAG) { 1523 Slog.e(LOG_TAG, "Unable to read restrictions file " 1524 + restrictionsFile.getBaseFile()); 1525 return restrictions; 1526 } 1527 while (parser.next() != XmlPullParser.END_DOCUMENT) { 1528 readEntry(restrictions, values, parser); 1529 } 1530 } catch (IOException|XmlPullParserException e) { 1531 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 1532 } finally { 1533 IoUtils.closeQuietly(fis); 1534 } 1535 return restrictions; 1536 } 1537 1538 private static void readEntry(Bundle restrictions, ArrayList<String> values, 1539 XmlPullParser parser) throws XmlPullParserException, IOException { 1540 int type = parser.getEventType(); 1541 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 1542 String key = parser.getAttributeValue(null, ATTR_KEY); 1543 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 1544 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 1545 if (multiple != null) { 1546 values.clear(); 1547 int count = Integer.parseInt(multiple); 1548 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1549 if (type == XmlPullParser.START_TAG 1550 && parser.getName().equals(TAG_VALUE)) { 1551 values.add(parser.nextText().trim()); 1552 count--; 1553 } 1554 } 1555 String [] valueStrings = new String[values.size()]; 1556 values.toArray(valueStrings); 1557 restrictions.putStringArray(key, valueStrings); 1558 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 1559 restrictions.putBundle(key, readBundleEntry(parser, values)); 1560 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 1561 final int outerDepth = parser.getDepth(); 1562 ArrayList<Bundle> bundleList = new ArrayList<>(); 1563 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 1564 Bundle childBundle = readBundleEntry(parser, values); 1565 bundleList.add(childBundle); 1566 } 1567 restrictions.putParcelableArray(key, 1568 bundleList.toArray(new Bundle[bundleList.size()])); 1569 } else { 1570 String value = parser.nextText().trim(); 1571 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 1572 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 1573 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 1574 restrictions.putInt(key, Integer.parseInt(value)); 1575 } else { 1576 restrictions.putString(key, value); 1577 } 1578 } 1579 } 1580 } 1581 1582 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 1583 throws IOException, XmlPullParserException { 1584 Bundle childBundle = new Bundle(); 1585 final int outerDepth = parser.getDepth(); 1586 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 1587 readEntry(childBundle, values, parser); 1588 } 1589 return childBundle; 1590 } 1591 1592 private void writeApplicationRestrictionsLocked(String packageName, 1593 Bundle restrictions, int userId) { 1594 AtomicFile restrictionsFile = new AtomicFile( 1595 new File(Environment.getUserSystemDirectory(userId), 1596 packageToRestrictionsFileName(packageName))); 1597 writeApplicationRestrictionsLocked(restrictions, restrictionsFile); 1598 } 1599 1600 @VisibleForTesting 1601 static void writeApplicationRestrictionsLocked(Bundle restrictions, 1602 AtomicFile restrictionsFile) { 1603 FileOutputStream fos = null; 1604 try { 1605 fos = restrictionsFile.startWrite(); 1606 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1607 1608 final XmlSerializer serializer = new FastXmlSerializer(); 1609 serializer.setOutput(bos, "utf-8"); 1610 serializer.startDocument(null, true); 1611 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1612 1613 serializer.startTag(null, TAG_RESTRICTIONS); 1614 writeBundle(restrictions, serializer); 1615 serializer.endTag(null, TAG_RESTRICTIONS); 1616 1617 serializer.endDocument(); 1618 restrictionsFile.finishWrite(fos); 1619 } catch (Exception e) { 1620 restrictionsFile.failWrite(fos); 1621 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 1622 } 1623 } 1624 1625 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 1626 throws IOException { 1627 for (String key : restrictions.keySet()) { 1628 Object value = restrictions.get(key); 1629 serializer.startTag(null, TAG_ENTRY); 1630 serializer.attribute(null, ATTR_KEY, key); 1631 1632 if (value instanceof Boolean) { 1633 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 1634 serializer.text(value.toString()); 1635 } else if (value instanceof Integer) { 1636 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 1637 serializer.text(value.toString()); 1638 } else if (value == null || value instanceof String) { 1639 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 1640 serializer.text(value != null ? (String) value : ""); 1641 } else if (value instanceof Bundle) { 1642 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 1643 writeBundle((Bundle) value, serializer); 1644 } else if (value instanceof Parcelable[]) { 1645 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 1646 Parcelable[] array = (Parcelable[]) value; 1647 for (Parcelable parcelable : array) { 1648 if (!(parcelable instanceof Bundle)) { 1649 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 1650 } 1651 serializer.startTag(null, TAG_ENTRY); 1652 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 1653 writeBundle((Bundle) parcelable, serializer); 1654 serializer.endTag(null, TAG_ENTRY); 1655 } 1656 } else { 1657 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 1658 String[] values = (String[]) value; 1659 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 1660 for (String choice : values) { 1661 serializer.startTag(null, TAG_VALUE); 1662 serializer.text(choice != null ? choice : ""); 1663 serializer.endTag(null, TAG_VALUE); 1664 } 1665 } 1666 serializer.endTag(null, TAG_ENTRY); 1667 } 1668 } 1669 1670 @Override 1671 public int getUserSerialNumber(int userHandle) { 1672 synchronized (mPackagesLock) { 1673 if (!exists(userHandle)) return -1; 1674 return getUserInfoLocked(userHandle).serialNumber; 1675 } 1676 } 1677 1678 @Override 1679 public int getUserHandle(int userSerialNumber) { 1680 synchronized (mPackagesLock) { 1681 for (int userId : mUserIds) { 1682 UserInfo info = getUserInfoLocked(userId); 1683 if (info != null && info.serialNumber == userSerialNumber) return userId; 1684 } 1685 // Not found 1686 return -1; 1687 } 1688 } 1689 1690 @Override 1691 public long getUserCreationTime(int userHandle) { 1692 int callingUserId = UserHandle.getCallingUserId(); 1693 UserInfo userInfo = null; 1694 synchronized (mPackagesLock) { 1695 if (callingUserId == userHandle) { 1696 userInfo = getUserInfoLocked(userHandle); 1697 } else { 1698 UserInfo parent = getProfileParentLocked(userHandle); 1699 if (parent != null && parent.id == callingUserId) { 1700 userInfo = getUserInfoLocked(userHandle); 1701 } 1702 } 1703 } 1704 if (userInfo == null) { 1705 throw new SecurityException("userHandle can only be the calling user or a managed " 1706 + "profile associated with this user"); 1707 } 1708 return userInfo.creationTime; 1709 } 1710 1711 /** 1712 * Caches the list of user ids in an array, adjusting the array size when necessary. 1713 */ 1714 private void updateUserIdsLocked() { 1715 int num = 0; 1716 for (int i = 0; i < mUsers.size(); i++) { 1717 if (!mUsers.valueAt(i).partial) { 1718 num++; 1719 } 1720 } 1721 final int[] newUsers = new int[num]; 1722 int n = 0; 1723 for (int i = 0; i < mUsers.size(); i++) { 1724 if (!mUsers.valueAt(i).partial) { 1725 newUsers[n++] = mUsers.keyAt(i); 1726 } 1727 } 1728 mUserIds = newUsers; 1729 } 1730 1731 /** 1732 * Make a note of the last started time of a user and do some cleanup. 1733 * @param userId the user that was just foregrounded 1734 */ 1735 public void userForeground(int userId) { 1736 synchronized (mPackagesLock) { 1737 UserInfo user = mUsers.get(userId); 1738 long now = System.currentTimeMillis(); 1739 if (user == null || user.partial) { 1740 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 1741 return; 1742 } 1743 if (now > EPOCH_PLUS_30_YEARS) { 1744 user.lastLoggedInTime = now; 1745 scheduleWriteUserLocked(user); 1746 } 1747 } 1748 } 1749 1750 /** 1751 * Returns the next available user id, filling in any holes in the ids. 1752 * TODO: May not be a good idea to recycle ids, in case it results in confusion 1753 * for data and battery stats collection, or unexpected cross-talk. 1754 * @return 1755 */ 1756 private int getNextAvailableIdLocked() { 1757 synchronized (mPackagesLock) { 1758 int i = MIN_USER_ID; 1759 while (i < Integer.MAX_VALUE) { 1760 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 1761 break; 1762 } 1763 i++; 1764 } 1765 return i; 1766 } 1767 } 1768 1769 private String packageToRestrictionsFileName(String packageName) { 1770 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 1771 } 1772 1773 @Override 1774 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1775 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 1776 != PackageManager.PERMISSION_GRANTED) { 1777 pw.println("Permission Denial: can't dump UserManager from from pid=" 1778 + Binder.getCallingPid() 1779 + ", uid=" + Binder.getCallingUid() 1780 + " without permission " 1781 + android.Manifest.permission.DUMP); 1782 return; 1783 } 1784 1785 long now = System.currentTimeMillis(); 1786 StringBuilder sb = new StringBuilder(); 1787 synchronized (mPackagesLock) { 1788 pw.println("Users:"); 1789 for (int i = 0; i < mUsers.size(); i++) { 1790 UserInfo user = mUsers.valueAt(i); 1791 if (user == null) continue; 1792 pw.print(" "); pw.print(user); pw.print(" serialNo="); pw.print(user.serialNumber); 1793 if (mRemovingUserIds.get(mUsers.keyAt(i))) pw.print(" <removing> "); 1794 if (user.partial) pw.print(" <partial>"); 1795 pw.println(); 1796 pw.print(" Created: "); 1797 if (user.creationTime == 0) { 1798 pw.println("<unknown>"); 1799 } else { 1800 sb.setLength(0); 1801 TimeUtils.formatDuration(now - user.creationTime, sb); 1802 sb.append(" ago"); 1803 pw.println(sb); 1804 } 1805 pw.print(" Last logged in: "); 1806 if (user.lastLoggedInTime == 0) { 1807 pw.println("<unknown>"); 1808 } else { 1809 sb.setLength(0); 1810 TimeUtils.formatDuration(now - user.lastLoggedInTime, sb); 1811 sb.append(" ago"); 1812 pw.println(sb); 1813 } 1814 } 1815 } 1816 } 1817 1818 final class MainHandler extends Handler { 1819 1820 @Override 1821 public void handleMessage(Message msg) { 1822 switch (msg.what) { 1823 case WRITE_USER_MSG: 1824 removeMessages(WRITE_USER_MSG, msg.obj); 1825 synchronized (mPackagesLock) { 1826 int userId = ((UserInfo) msg.obj).id; 1827 UserInfo userInfo = mUsers.get(userId); 1828 if (userInfo != null) { 1829 writeUserLocked(userInfo); 1830 } 1831 } 1832 } 1833 } 1834 } 1835} 1836