UserManagerService.java revision 1df1473008c24487701c5bc15f39ed9f9697f421
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 static android.text.format.DateUtils.MINUTE_IN_MILLIS; 20 21import android.app.Activity; 22import android.app.ActivityManager; 23import android.app.ActivityManagerNative; 24import android.app.ActivityThread; 25import android.app.IStopUserCallback; 26import android.content.BroadcastReceiver; 27import android.content.Context; 28import android.content.Intent; 29import android.content.pm.ApplicationInfo; 30import android.content.pm.PackageManager; 31import android.content.pm.PackageManager.NameNotFoundException; 32import android.content.pm.UserInfo; 33import android.graphics.Bitmap; 34import android.graphics.BitmapFactory; 35import android.os.Binder; 36import android.os.Bundle; 37import android.os.Environment; 38import android.os.FileUtils; 39import android.os.Handler; 40import android.os.IUserManager; 41import android.os.Process; 42import android.os.RemoteException; 43import android.os.ServiceManager; 44import android.os.UserHandle; 45import android.os.UserManager; 46import android.util.AtomicFile; 47import android.util.Log; 48import android.util.Slog; 49import android.util.SparseArray; 50import android.util.SparseBooleanArray; 51import android.util.TimeUtils; 52import android.util.Xml; 53 54import com.android.internal.app.IAppOpsService; 55import com.android.internal.util.ArrayUtils; 56import com.android.internal.util.FastXmlSerializer; 57 58import org.xmlpull.v1.XmlPullParser; 59import org.xmlpull.v1.XmlPullParserException; 60import org.xmlpull.v1.XmlSerializer; 61 62import java.io.BufferedOutputStream; 63import java.io.File; 64import java.io.FileDescriptor; 65import java.io.FileInputStream; 66import java.io.FileNotFoundException; 67import java.io.FileOutputStream; 68import java.io.IOException; 69import java.io.PrintWriter; 70import java.security.MessageDigest; 71import java.security.NoSuchAlgorithmException; 72import java.security.SecureRandom; 73import java.util.ArrayList; 74import java.util.List; 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_SALT = "salt"; 89 private static final String ATTR_PIN_HASH = "pinHash"; 90 private static final String ATTR_FAILED_ATTEMPTS = "failedAttempts"; 91 private static final String ATTR_LAST_RETRY_MS = "lastAttemptMs"; 92 private static final String ATTR_SERIAL_NO = "serialNumber"; 93 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 94 private static final String ATTR_PARTIAL = "partial"; 95 private static final String ATTR_USER_VERSION = "version"; 96 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 97 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 98 private static final String TAG_USERS = "users"; 99 private static final String TAG_USER = "user"; 100 private static final String TAG_RESTRICTIONS = "restrictions"; 101 private static final String TAG_ENTRY = "entry"; 102 private static final String TAG_VALUE = "value"; 103 private static final String ATTR_KEY = "key"; 104 private static final String ATTR_VALUE_TYPE = "type"; 105 private static final String ATTR_MULTIPLE = "m"; 106 107 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 108 private static final String ATTR_TYPE_STRING = "s"; 109 private static final String ATTR_TYPE_BOOLEAN = "b"; 110 private static final String ATTR_TYPE_INTEGER = "i"; 111 112 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 113 private static final String USER_LIST_FILENAME = "userlist.xml"; 114 private static final String USER_PHOTO_FILENAME = "photo.png"; 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 = 4; 122 123 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 124 125 // Number of attempts before jumping to the next BACKOFF_TIMES slot 126 private static final int BACKOFF_INC_INTERVAL = 5; 127 128 // Maximum number of managed profiles permitted is 1. This cannot be increased 129 // without first making sure that the rest of the framework is prepared for it. 130 private static final int MAX_MANAGED_PROFILES = 1; 131 132 // Amount of time to force the user to wait before entering the PIN again, after failing 133 // BACKOFF_INC_INTERVAL times. 134 private static final int[] BACKOFF_TIMES = { 0, 30*1000, 60*1000, 5*60*1000, 30*60*1000 }; 135 136 137 private final Context mContext; 138 private final PackageManagerService mPm; 139 private final Object mInstallLock; 140 private final Object mPackagesLock; 141 142 private final Handler mHandler; 143 144 private final File mUsersDir; 145 private final File mUserListFile; 146 private final File mBaseUserPath; 147 148 private final SparseArray<UserInfo> mUsers = new SparseArray<UserInfo>(); 149 private final SparseArray<Bundle> mUserRestrictions = new SparseArray<Bundle>(); 150 private final Bundle mGuestRestrictions = new Bundle(); 151 152 class RestrictionsPinState { 153 long salt; 154 String pinHash; 155 int failedAttempts; 156 long lastAttemptTime; 157 } 158 159 private final SparseArray<RestrictionsPinState> mRestrictionsPinStates = 160 new SparseArray<RestrictionsPinState>(); 161 162 /** 163 * Set of user IDs being actively removed. Removed IDs linger in this set 164 * for several seconds to work around a VFS caching issue. 165 */ 166 // @GuardedBy("mPackagesLock") 167 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 168 169 private int[] mUserIds; 170 private int mNextSerialNumber; 171 private int mUserVersion = 0; 172 173 private IAppOpsService mAppOpsService; 174 175 private static UserManagerService sInstance; 176 177 public static UserManagerService getInstance() { 178 synchronized (UserManagerService.class) { 179 return sInstance; 180 } 181 } 182 183 /** 184 * Available for testing purposes. 185 */ 186 UserManagerService(File dataDir, File baseUserPath) { 187 this(null, null, new Object(), new Object(), dataDir, baseUserPath); 188 } 189 190 /** 191 * Called by package manager to create the service. This is closely 192 * associated with the package manager, and the given lock is the 193 * package manager's own lock. 194 */ 195 UserManagerService(Context context, PackageManagerService pm, 196 Object installLock, Object packagesLock) { 197 this(context, pm, installLock, packagesLock, 198 Environment.getDataDirectory(), 199 new File(Environment.getDataDirectory(), "user")); 200 } 201 202 /** 203 * Available for testing purposes. 204 */ 205 private UserManagerService(Context context, PackageManagerService pm, 206 Object installLock, Object packagesLock, 207 File dataDir, File baseUserPath) { 208 mContext = context; 209 mPm = pm; 210 mInstallLock = installLock; 211 mPackagesLock = packagesLock; 212 mHandler = new Handler(); 213 synchronized (mInstallLock) { 214 synchronized (mPackagesLock) { 215 mUsersDir = new File(dataDir, USER_INFO_DIR); 216 mUsersDir.mkdirs(); 217 // Make zeroth user directory, for services to migrate their files to that location 218 File userZeroDir = new File(mUsersDir, "0"); 219 userZeroDir.mkdirs(); 220 mBaseUserPath = baseUserPath; 221 FileUtils.setPermissions(mUsersDir.toString(), 222 FileUtils.S_IRWXU|FileUtils.S_IRWXG 223 |FileUtils.S_IROTH|FileUtils.S_IXOTH, 224 -1, -1); 225 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 226 readUserListLocked(); 227 // Prune out any partially created/partially removed users. 228 ArrayList<UserInfo> partials = new ArrayList<UserInfo>(); 229 for (int i = 0; i < mUsers.size(); i++) { 230 UserInfo ui = mUsers.valueAt(i); 231 if (ui.partial && i != 0) { 232 partials.add(ui); 233 } 234 } 235 for (int i = 0; i < partials.size(); i++) { 236 UserInfo ui = partials.get(i); 237 Slog.w(LOG_TAG, "Removing partially created user #" + i 238 + " (name=" + ui.name + ")"); 239 removeUserStateLocked(ui.id); 240 } 241 sInstance = this; 242 } 243 } 244 } 245 246 void systemReady() { 247 userForeground(UserHandle.USER_OWNER); 248 mAppOpsService = IAppOpsService.Stub.asInterface( 249 ServiceManager.getService(Context.APP_OPS_SERVICE)); 250 for (int i = 0; i < mUserIds.length; ++i) { 251 try { 252 mAppOpsService.setUserRestrictions(mUserRestrictions.get(mUserIds[i]), mUserIds[i]); 253 } catch (RemoteException e) { 254 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 255 } 256 } 257 } 258 259 @Override 260 public List<UserInfo> getUsers(boolean excludeDying) { 261 checkManageUsersPermission("query users"); 262 synchronized (mPackagesLock) { 263 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 264 for (int i = 0; i < mUsers.size(); i++) { 265 UserInfo ui = mUsers.valueAt(i); 266 if (ui.partial) { 267 continue; 268 } 269 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 270 users.add(ui); 271 } 272 } 273 return users; 274 } 275 } 276 277 @Override 278 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 279 if (userId != UserHandle.getCallingUserId()) { 280 checkManageUsersPermission("getting profiles related to user " + userId); 281 } 282 final long ident = Binder.clearCallingIdentity(); 283 try { 284 synchronized (mPackagesLock) { 285 return getProfilesLocked(userId, enabledOnly); 286 } 287 } finally { 288 Binder.restoreCallingIdentity(ident); 289 } 290 } 291 292 /** Assume permissions already checked and caller's identity cleared */ 293 private List<UserInfo> getProfilesLocked(int userId, boolean enabledOnly) { 294 UserInfo user = getUserInfoLocked(userId); 295 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 296 if (user == null) { 297 // Probably a dying user 298 return users; 299 } 300 for (int i = 0; i < mUsers.size(); i++) { 301 UserInfo profile = mUsers.valueAt(i); 302 if (!isProfileOf(user, profile)) { 303 continue; 304 } 305 if (enabledOnly && !profile.isEnabled()) { 306 continue; 307 } 308 if (mRemovingUserIds.get(profile.id)) { 309 continue; 310 } 311 users.add(profile); 312 } 313 return users; 314 } 315 316 @Override 317 public UserInfo getProfileParent(int userHandle) { 318 checkManageUsersPermission("get the profile parent"); 319 synchronized (mPackagesLock) { 320 UserInfo profile = getUserInfoLocked(userHandle); 321 int parentUserId = profile.profileGroupId; 322 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 323 return null; 324 } else { 325 return getUserInfoLocked(parentUserId); 326 } 327 } 328 } 329 330 private boolean isProfileOf(UserInfo user, UserInfo profile) { 331 return user.id == profile.id || 332 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 333 && user.profileGroupId == profile.profileGroupId); 334 } 335 336 @Override 337 public void setUserEnabled(int userId) { 338 checkManageUsersPermission("enable user"); 339 synchronized (mPackagesLock) { 340 UserInfo info = getUserInfoLocked(userId); 341 if (info != null && !info.isEnabled()) { 342 info.flags ^= UserInfo.FLAG_DISABLED; 343 writeUserLocked(info); 344 } 345 } 346 } 347 348 @Override 349 public UserInfo getUserInfo(int userId) { 350 checkManageUsersPermission("query user"); 351 synchronized (mPackagesLock) { 352 return getUserInfoLocked(userId); 353 } 354 } 355 356 @Override 357 public boolean isRestricted() { 358 synchronized (mPackagesLock) { 359 return getUserInfoLocked(UserHandle.getCallingUserId()).isRestricted(); 360 } 361 } 362 363 /* 364 * Should be locked on mUsers before calling this. 365 */ 366 private UserInfo getUserInfoLocked(int userId) { 367 UserInfo ui = mUsers.get(userId); 368 // If it is partial and not in the process of being removed, return as unknown user. 369 if (ui != null && ui.partial && !mRemovingUserIds.get(userId)) { 370 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 371 return null; 372 } 373 return ui; 374 } 375 376 public boolean exists(int userId) { 377 synchronized (mPackagesLock) { 378 return ArrayUtils.contains(mUserIds, userId); 379 } 380 } 381 382 @Override 383 public void setUserName(int userId, String name) { 384 checkManageUsersPermission("rename users"); 385 boolean changed = false; 386 synchronized (mPackagesLock) { 387 UserInfo info = mUsers.get(userId); 388 if (info == null || info.partial) { 389 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 390 return; 391 } 392 if (name != null && !name.equals(info.name)) { 393 info.name = name; 394 writeUserLocked(info); 395 changed = true; 396 } 397 } 398 if (changed) { 399 sendUserInfoChangedBroadcast(userId); 400 } 401 } 402 403 @Override 404 public void setUserIcon(int userId, Bitmap bitmap) { 405 checkManageUsersPermission("update users"); 406 long ident = Binder.clearCallingIdentity(); 407 try { 408 synchronized (mPackagesLock) { 409 UserInfo info = mUsers.get(userId); 410 if (info == null || info.partial) { 411 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 412 return; 413 } 414 writeBitmapLocked(info, bitmap); 415 writeUserLocked(info); 416 } 417 sendUserInfoChangedBroadcast(userId); 418 } finally { 419 Binder.restoreCallingIdentity(ident); 420 } 421 } 422 423 private void sendUserInfoChangedBroadcast(int userId) { 424 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 425 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 426 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 427 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 428 } 429 430 @Override 431 public Bitmap getUserIcon(int userId) { 432 synchronized (mPackagesLock) { 433 UserInfo info = mUsers.get(userId); 434 if (info == null || info.partial) { 435 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + userId); 436 return null; 437 } 438 int callingGroupId = mUsers.get(UserHandle.getCallingUserId()).profileGroupId; 439 if (callingGroupId == UserInfo.NO_PROFILE_GROUP_ID 440 || callingGroupId != info.profileGroupId) { 441 checkManageUsersPermission("get the icon of a user who is not related"); 442 } 443 if (info.iconPath == null) { 444 return null; 445 } 446 return BitmapFactory.decodeFile(info.iconPath); 447 } 448 } 449 450 public void makeInitialized(int userId) { 451 checkManageUsersPermission("makeInitialized"); 452 synchronized (mPackagesLock) { 453 UserInfo info = mUsers.get(userId); 454 if (info == null || info.partial) { 455 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 456 } 457 if ((info.flags&UserInfo.FLAG_INITIALIZED) == 0) { 458 info.flags |= UserInfo.FLAG_INITIALIZED; 459 writeUserLocked(info); 460 } 461 } 462 } 463 464 @Override 465 public Bundle getDefaultGuestRestrictions() { 466 checkManageUsersPermission("getDefaultGuestRestrictions"); 467 synchronized (mPackagesLock) { 468 return new Bundle(mGuestRestrictions); 469 } 470 } 471 472 @Override 473 public void setDefaultGuestRestrictions(Bundle restrictions) { 474 checkManageUsersPermission("setDefaultGuestRestrictions"); 475 synchronized (mPackagesLock) { 476 mGuestRestrictions.clear(); 477 mGuestRestrictions.putAll(restrictions); 478 writeUserListLocked(); 479 } 480 } 481 482 @Override 483 public Bundle getUserRestrictions(int userId) { 484 // checkManageUsersPermission("getUserRestrictions"); 485 486 synchronized (mPackagesLock) { 487 Bundle restrictions = mUserRestrictions.get(userId); 488 return restrictions != null ? new Bundle(restrictions) : new Bundle(); 489 } 490 } 491 492 @Override 493 public void setUserRestrictions(Bundle restrictions, int userId) { 494 checkManageUsersPermission("setUserRestrictions"); 495 if (restrictions == null) return; 496 497 synchronized (mPackagesLock) { 498 mUserRestrictions.get(userId).clear(); 499 mUserRestrictions.get(userId).putAll(restrictions); 500 long token = Binder.clearCallingIdentity(); 501 try { 502 mAppOpsService.setUserRestrictions(mUserRestrictions.get(userId), userId); 503 } catch (RemoteException e) { 504 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 505 } finally { 506 Binder.restoreCallingIdentity(token); 507 } 508 writeUserLocked(mUsers.get(userId)); 509 } 510 } 511 512 /** 513 * Check if we've hit the limit of how many users can be created. 514 */ 515 private boolean isUserLimitReachedLocked() { 516 int aliveUserCount = 0; 517 final int totalUserCount = mUsers.size(); 518 // Skip over users being removed 519 for (int i = 0; i < totalUserCount; i++) { 520 UserInfo user = mUsers.valueAt(i); 521 if (!mRemovingUserIds.get(user.id) 522 && !user.isGuest() && !user.partial) { 523 aliveUserCount++; 524 } 525 } 526 return aliveUserCount >= UserManager.getMaxSupportedUsers(); 527 } 528 529 /** 530 * Enforces that only the system UID or root's UID or apps that have the 531 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 532 * permission can make certain calls to the UserManager. 533 * 534 * @param message used as message if SecurityException is thrown 535 * @throws SecurityException if the caller is not system or root 536 */ 537 private static final void checkManageUsersPermission(String message) { 538 final int uid = Binder.getCallingUid(); 539 if (uid != Process.SYSTEM_UID && uid != 0 540 && ActivityManager.checkComponentPermission( 541 android.Manifest.permission.MANAGE_USERS, 542 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 543 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 544 } 545 } 546 547 private void writeBitmapLocked(UserInfo info, Bitmap bitmap) { 548 try { 549 File dir = new File(mUsersDir, Integer.toString(info.id)); 550 File file = new File(dir, USER_PHOTO_FILENAME); 551 if (!dir.exists()) { 552 dir.mkdir(); 553 FileUtils.setPermissions( 554 dir.getPath(), 555 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 556 -1, -1); 557 } 558 FileOutputStream os; 559 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(file))) { 560 info.iconPath = file.getAbsolutePath(); 561 } 562 try { 563 os.close(); 564 } catch (IOException ioe) { 565 // What the ... ! 566 } 567 } catch (FileNotFoundException e) { 568 Slog.w(LOG_TAG, "Error setting photo for user ", e); 569 } 570 } 571 572 /** 573 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 574 * cache it elsewhere. 575 * @return the array of user ids. 576 */ 577 public int[] getUserIds() { 578 synchronized (mPackagesLock) { 579 return mUserIds; 580 } 581 } 582 583 int[] getUserIdsLPr() { 584 return mUserIds; 585 } 586 587 private void readUserListLocked() { 588 if (!mUserListFile.exists()) { 589 fallbackToSingleUserLocked(); 590 return; 591 } 592 FileInputStream fis = null; 593 AtomicFile userListFile = new AtomicFile(mUserListFile); 594 try { 595 fis = userListFile.openRead(); 596 XmlPullParser parser = Xml.newPullParser(); 597 parser.setInput(fis, null); 598 int type; 599 while ((type = parser.next()) != XmlPullParser.START_TAG 600 && type != XmlPullParser.END_DOCUMENT) { 601 ; 602 } 603 604 if (type != XmlPullParser.START_TAG) { 605 Slog.e(LOG_TAG, "Unable to read user list"); 606 fallbackToSingleUserLocked(); 607 return; 608 } 609 610 mNextSerialNumber = -1; 611 if (parser.getName().equals(TAG_USERS)) { 612 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 613 if (lastSerialNumber != null) { 614 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 615 } 616 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 617 if (versionNumber != null) { 618 mUserVersion = Integer.parseInt(versionNumber); 619 } 620 } 621 622 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 623 if (type == XmlPullParser.START_TAG) { 624 final String name = parser.getName(); 625 if (name.equals(TAG_USER)) { 626 String id = parser.getAttributeValue(null, ATTR_ID); 627 UserInfo user = readUserLocked(Integer.parseInt(id)); 628 629 if (user != null) { 630 mUsers.put(user.id, user); 631 if (mNextSerialNumber < 0 || mNextSerialNumber <= user.id) { 632 mNextSerialNumber = user.id + 1; 633 } 634 } 635 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 636 mGuestRestrictions.clear(); 637 readRestrictionsLocked(parser, mGuestRestrictions); 638 } 639 } 640 } 641 updateUserIdsLocked(); 642 upgradeIfNecessaryLocked(); 643 } catch (IOException ioe) { 644 fallbackToSingleUserLocked(); 645 } catch (XmlPullParserException pe) { 646 fallbackToSingleUserLocked(); 647 } finally { 648 if (fis != null) { 649 try { 650 fis.close(); 651 } catch (IOException e) { 652 } 653 } 654 } 655 } 656 657 /** 658 * Upgrade steps between versions, either for fixing bugs or changing the data format. 659 */ 660 private void upgradeIfNecessaryLocked() { 661 int userVersion = mUserVersion; 662 if (userVersion < 1) { 663 // Assign a proper name for the owner, if not initialized correctly before 664 UserInfo user = mUsers.get(UserHandle.USER_OWNER); 665 if ("Primary".equals(user.name)) { 666 user.name = mContext.getResources().getString(com.android.internal.R.string.owner_name); 667 writeUserLocked(user); 668 } 669 userVersion = 1; 670 } 671 672 if (userVersion < 2) { 673 // Owner should be marked as initialized 674 UserInfo user = mUsers.get(UserHandle.USER_OWNER); 675 if ((user.flags & UserInfo.FLAG_INITIALIZED) == 0) { 676 user.flags |= UserInfo.FLAG_INITIALIZED; 677 writeUserLocked(user); 678 } 679 userVersion = 2; 680 } 681 682 683 if (userVersion < 4) { 684 userVersion = 4; 685 } 686 687 if (userVersion < USER_VERSION) { 688 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 689 + USER_VERSION); 690 } else { 691 mUserVersion = userVersion; 692 writeUserListLocked(); 693 } 694 } 695 696 private void fallbackToSingleUserLocked() { 697 // Create the primary user 698 UserInfo primary = new UserInfo(UserHandle.USER_OWNER, 699 mContext.getResources().getString(com.android.internal.R.string.owner_name), null, 700 UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY | UserInfo.FLAG_INITIALIZED); 701 mUsers.put(0, primary); 702 mNextSerialNumber = MIN_USER_ID; 703 mUserVersion = USER_VERSION; 704 705 Bundle restrictions = new Bundle(); 706 mUserRestrictions.append(UserHandle.USER_OWNER, restrictions); 707 708 updateUserIdsLocked(); 709 710 writeUserListLocked(); 711 writeUserLocked(primary); 712 } 713 714 /* 715 * Writes the user file in this format: 716 * 717 * <user flags="20039023" id="0"> 718 * <name>Primary</name> 719 * </user> 720 */ 721 private void writeUserLocked(UserInfo userInfo) { 722 FileOutputStream fos = null; 723 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userInfo.id + XML_SUFFIX)); 724 try { 725 fos = userFile.startWrite(); 726 final BufferedOutputStream bos = new BufferedOutputStream(fos); 727 728 // XmlSerializer serializer = XmlUtils.serializerInstance(); 729 final XmlSerializer serializer = new FastXmlSerializer(); 730 serializer.setOutput(bos, "utf-8"); 731 serializer.startDocument(null, true); 732 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 733 734 serializer.startTag(null, TAG_USER); 735 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 736 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 737 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 738 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 739 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 740 Long.toString(userInfo.lastLoggedInTime)); 741 RestrictionsPinState pinState = mRestrictionsPinStates.get(userInfo.id); 742 if (pinState != null) { 743 if (pinState.salt != 0) { 744 serializer.attribute(null, ATTR_SALT, Long.toString(pinState.salt)); 745 } 746 if (pinState.pinHash != null) { 747 serializer.attribute(null, ATTR_PIN_HASH, pinState.pinHash); 748 } 749 if (pinState.failedAttempts != 0) { 750 serializer.attribute(null, ATTR_FAILED_ATTEMPTS, 751 Integer.toString(pinState.failedAttempts)); 752 serializer.attribute(null, ATTR_LAST_RETRY_MS, 753 Long.toString(pinState.lastAttemptTime)); 754 } 755 } 756 if (userInfo.iconPath != null) { 757 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 758 } 759 if (userInfo.partial) { 760 serializer.attribute(null, ATTR_PARTIAL, "true"); 761 } 762 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 763 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 764 Integer.toString(userInfo.profileGroupId)); 765 } 766 767 serializer.startTag(null, TAG_NAME); 768 serializer.text(userInfo.name); 769 serializer.endTag(null, TAG_NAME); 770 Bundle restrictions = mUserRestrictions.get(userInfo.id); 771 if (restrictions != null) { 772 writeRestrictionsLocked(serializer, restrictions); 773 } 774 serializer.endTag(null, TAG_USER); 775 776 serializer.endDocument(); 777 userFile.finishWrite(fos); 778 } catch (Exception ioe) { 779 Slog.e(LOG_TAG, "Error writing user info " + userInfo.id + "\n" + ioe); 780 userFile.failWrite(fos); 781 } 782 } 783 784 /* 785 * Writes the user list file in this format: 786 * 787 * <users nextSerialNumber="3"> 788 * <user id="0"></user> 789 * <user id="2"></user> 790 * </users> 791 */ 792 private void writeUserListLocked() { 793 FileOutputStream fos = null; 794 AtomicFile userListFile = new AtomicFile(mUserListFile); 795 try { 796 fos = userListFile.startWrite(); 797 final BufferedOutputStream bos = new BufferedOutputStream(fos); 798 799 // XmlSerializer serializer = XmlUtils.serializerInstance(); 800 final XmlSerializer serializer = new FastXmlSerializer(); 801 serializer.setOutput(bos, "utf-8"); 802 serializer.startDocument(null, true); 803 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 804 805 serializer.startTag(null, TAG_USERS); 806 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 807 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 808 809 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 810 writeRestrictionsLocked(serializer, mGuestRestrictions); 811 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 812 for (int i = 0; i < mUsers.size(); i++) { 813 UserInfo user = mUsers.valueAt(i); 814 serializer.startTag(null, TAG_USER); 815 serializer.attribute(null, ATTR_ID, Integer.toString(user.id)); 816 serializer.endTag(null, TAG_USER); 817 } 818 819 serializer.endTag(null, TAG_USERS); 820 821 serializer.endDocument(); 822 userListFile.finishWrite(fos); 823 } catch (Exception e) { 824 userListFile.failWrite(fos); 825 Slog.e(LOG_TAG, "Error writing user list"); 826 } 827 } 828 829 private void writeRestrictionsLocked(XmlSerializer serializer, Bundle restrictions) 830 throws IOException { 831 serializer.startTag(null, TAG_RESTRICTIONS); 832 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_WIFI); 833 writeBoolean(serializer, restrictions, UserManager.DISALLOW_MODIFY_ACCOUNTS); 834 writeBoolean(serializer, restrictions, UserManager.DISALLOW_INSTALL_APPS); 835 writeBoolean(serializer, restrictions, UserManager.DISALLOW_UNINSTALL_APPS); 836 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SHARE_LOCATION); 837 writeBoolean(serializer, restrictions, 838 UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES); 839 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_BLUETOOTH); 840 writeBoolean(serializer, restrictions, UserManager.DISALLOW_USB_FILE_TRANSFER); 841 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_CREDENTIALS); 842 writeBoolean(serializer, restrictions, UserManager.DISALLOW_REMOVE_USER); 843 writeBoolean(serializer, restrictions, UserManager.DISALLOW_DEBUGGING_FEATURES); 844 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_VPN); 845 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_TETHERING); 846 writeBoolean(serializer, restrictions, UserManager.DISALLOW_FACTORY_RESET); 847 writeBoolean(serializer, restrictions, UserManager.DISALLOW_ADD_USER); 848 writeBoolean(serializer, restrictions, UserManager.ENSURE_VERIFY_APPS); 849 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_CELL_BROADCASTS); 850 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS); 851 writeBoolean(serializer, restrictions, UserManager.DISALLOW_APPS_CONTROL); 852 writeBoolean(serializer, restrictions, UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA); 853 writeBoolean(serializer, restrictions, UserManager.DISALLOW_UNMUTE_MICROPHONE); 854 writeBoolean(serializer, restrictions, UserManager.DISALLOW_ADJUST_VOLUME); 855 writeBoolean(serializer, restrictions, UserManager.DISALLOW_OUTGOING_CALLS); 856 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SMS); 857 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CREATE_WINDOWS); 858 serializer.endTag(null, TAG_RESTRICTIONS); 859 } 860 861 private UserInfo readUserLocked(int id) { 862 int flags = 0; 863 int serialNumber = id; 864 String name = null; 865 String iconPath = null; 866 long creationTime = 0L; 867 long lastLoggedInTime = 0L; 868 long salt = 0L; 869 String pinHash = null; 870 int failedAttempts = 0; 871 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 872 long lastAttemptTime = 0L; 873 boolean partial = false; 874 Bundle restrictions = new Bundle(); 875 876 FileInputStream fis = null; 877 try { 878 AtomicFile userFile = 879 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 880 fis = userFile.openRead(); 881 XmlPullParser parser = Xml.newPullParser(); 882 parser.setInput(fis, null); 883 int type; 884 while ((type = parser.next()) != XmlPullParser.START_TAG 885 && type != XmlPullParser.END_DOCUMENT) { 886 ; 887 } 888 889 if (type != XmlPullParser.START_TAG) { 890 Slog.e(LOG_TAG, "Unable to read user " + id); 891 return null; 892 } 893 894 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 895 int storedId = readIntAttribute(parser, ATTR_ID, -1); 896 if (storedId != id) { 897 Slog.e(LOG_TAG, "User id does not match the file name"); 898 return null; 899 } 900 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 901 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 902 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 903 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 904 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 905 salt = readLongAttribute(parser, ATTR_SALT, 0L); 906 pinHash = parser.getAttributeValue(null, ATTR_PIN_HASH); 907 failedAttempts = readIntAttribute(parser, ATTR_FAILED_ATTEMPTS, 0); 908 lastAttemptTime = readLongAttribute(parser, ATTR_LAST_RETRY_MS, 0L); 909 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 910 UserInfo.NO_PROFILE_GROUP_ID); 911 if (profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 912 // This attribute was added and renamed during development of L. 913 // TODO Remove upgrade path by 1st May 2014 914 profileGroupId = readIntAttribute(parser, "relatedGroupId", 915 UserInfo.NO_PROFILE_GROUP_ID); 916 } 917 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 918 if ("true".equals(valueString)) { 919 partial = true; 920 } 921 922 int outerDepth = parser.getDepth(); 923 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 924 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 925 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 926 continue; 927 } 928 String tag = parser.getName(); 929 if (TAG_NAME.equals(tag)) { 930 type = parser.next(); 931 if (type == XmlPullParser.TEXT) { 932 name = parser.getText(); 933 } 934 } else if (TAG_RESTRICTIONS.equals(tag)) { 935 readRestrictionsLocked(parser, restrictions); 936 } 937 } 938 } 939 940 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 941 userInfo.serialNumber = serialNumber; 942 userInfo.creationTime = creationTime; 943 userInfo.lastLoggedInTime = lastLoggedInTime; 944 userInfo.partial = partial; 945 userInfo.profileGroupId = profileGroupId; 946 mUserRestrictions.append(id, restrictions); 947 if (salt != 0L) { 948 RestrictionsPinState pinState = mRestrictionsPinStates.get(id); 949 if (pinState == null) { 950 pinState = new RestrictionsPinState(); 951 mRestrictionsPinStates.put(id, pinState); 952 } 953 pinState.salt = salt; 954 pinState.pinHash = pinHash; 955 pinState.failedAttempts = failedAttempts; 956 pinState.lastAttemptTime = lastAttemptTime; 957 } 958 return userInfo; 959 960 } catch (IOException ioe) { 961 } catch (XmlPullParserException pe) { 962 } finally { 963 if (fis != null) { 964 try { 965 fis.close(); 966 } catch (IOException e) { 967 } 968 } 969 } 970 return null; 971 } 972 973 private void readRestrictionsLocked(XmlPullParser parser, Bundle restrictions) 974 throws IOException { 975 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_WIFI); 976 readBoolean(parser, restrictions, UserManager.DISALLOW_MODIFY_ACCOUNTS); 977 readBoolean(parser, restrictions, UserManager.DISALLOW_INSTALL_APPS); 978 readBoolean(parser, restrictions, UserManager.DISALLOW_UNINSTALL_APPS); 979 readBoolean(parser, restrictions, UserManager.DISALLOW_SHARE_LOCATION); 980 readBoolean(parser, restrictions, 981 UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES); 982 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_BLUETOOTH); 983 readBoolean(parser, restrictions, UserManager.DISALLOW_USB_FILE_TRANSFER); 984 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_CREDENTIALS); 985 readBoolean(parser, restrictions, UserManager.DISALLOW_REMOVE_USER); 986 readBoolean(parser, restrictions, UserManager.DISALLOW_DEBUGGING_FEATURES); 987 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_VPN); 988 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_TETHERING); 989 readBoolean(parser, restrictions, UserManager.DISALLOW_FACTORY_RESET); 990 readBoolean(parser, restrictions, UserManager.DISALLOW_ADD_USER); 991 readBoolean(parser, restrictions, UserManager.ENSURE_VERIFY_APPS); 992 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_CELL_BROADCASTS); 993 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS); 994 readBoolean(parser, restrictions, UserManager.DISALLOW_APPS_CONTROL); 995 readBoolean(parser, restrictions, 996 UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA); 997 readBoolean(parser, restrictions, UserManager.DISALLOW_UNMUTE_MICROPHONE); 998 readBoolean(parser, restrictions, UserManager.DISALLOW_ADJUST_VOLUME); 999 readBoolean(parser, restrictions, UserManager.DISALLOW_OUTGOING_CALLS); 1000 readBoolean(parser, restrictions, UserManager.DISALLOW_SMS); 1001 readBoolean(parser, restrictions, UserManager.DISALLOW_CREATE_WINDOWS); 1002 } 1003 1004 private void readBoolean(XmlPullParser parser, Bundle restrictions, 1005 String restrictionKey) { 1006 String value = parser.getAttributeValue(null, restrictionKey); 1007 if (value != null) { 1008 restrictions.putBoolean(restrictionKey, Boolean.parseBoolean(value)); 1009 } 1010 } 1011 1012 private void writeBoolean(XmlSerializer xml, Bundle restrictions, String restrictionKey) 1013 throws IOException { 1014 if (restrictions.containsKey(restrictionKey)) { 1015 xml.attribute(null, restrictionKey, 1016 Boolean.toString(restrictions.getBoolean(restrictionKey))); 1017 } 1018 } 1019 1020 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1021 String valueString = parser.getAttributeValue(null, attr); 1022 if (valueString == null) return defaultValue; 1023 try { 1024 return Integer.parseInt(valueString); 1025 } catch (NumberFormatException nfe) { 1026 return defaultValue; 1027 } 1028 } 1029 1030 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1031 String valueString = parser.getAttributeValue(null, attr); 1032 if (valueString == null) return defaultValue; 1033 try { 1034 return Long.parseLong(valueString); 1035 } catch (NumberFormatException nfe) { 1036 return defaultValue; 1037 } 1038 } 1039 1040 private boolean isPackageInstalled(String pkg, int userId) { 1041 final ApplicationInfo info = mPm.getApplicationInfo(pkg, 1042 PackageManager.GET_UNINSTALLED_PACKAGES, 1043 userId); 1044 if (info == null || (info.flags&ApplicationInfo.FLAG_INSTALLED) == 0) { 1045 return false; 1046 } 1047 return true; 1048 } 1049 1050 /** 1051 * Removes all the restrictions files (res_<packagename>) for a given user. 1052 * Does not do any permissions checking. 1053 */ 1054 private void cleanAppRestrictions(int userId) { 1055 synchronized (mPackagesLock) { 1056 File dir = Environment.getUserSystemDirectory(userId); 1057 String[] files = dir.list(); 1058 if (files == null) return; 1059 for (String fileName : files) { 1060 if (fileName.startsWith(RESTRICTIONS_FILE_PREFIX)) { 1061 File resFile = new File(dir, fileName); 1062 if (resFile.exists()) { 1063 resFile.delete(); 1064 } 1065 } 1066 } 1067 } 1068 } 1069 1070 /** 1071 * Removes the app restrictions file for a specific package and user id, if it exists. 1072 */ 1073 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1074 synchronized (mPackagesLock) { 1075 File dir = Environment.getUserSystemDirectory(userId); 1076 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1077 if (resFile.exists()) { 1078 resFile.delete(); 1079 } 1080 } 1081 } 1082 1083 @Override 1084 public UserInfo createProfileForUser(String name, int flags, int userId) { 1085 checkManageUsersPermission("Only the system can create users"); 1086 if (userId != UserHandle.USER_OWNER) { 1087 Slog.w(LOG_TAG, "Only user owner can have profiles"); 1088 return null; 1089 } 1090 return createUserInternal(name, flags, userId); 1091 } 1092 1093 @Override 1094 public UserInfo createUser(String name, int flags) { 1095 checkManageUsersPermission("Only the system can create users"); 1096 return createUserInternal(name, flags, UserHandle.USER_NULL); 1097 } 1098 1099 private UserInfo createUserInternal(String name, int flags, int parentId) { 1100 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1101 UserManager.DISALLOW_ADD_USER, false)) { 1102 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1103 return null; 1104 } 1105 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1106 final long ident = Binder.clearCallingIdentity(); 1107 UserInfo userInfo = null; 1108 try { 1109 synchronized (mInstallLock) { 1110 synchronized (mPackagesLock) { 1111 UserInfo parent = null; 1112 if (parentId != UserHandle.USER_NULL) { 1113 parent = getUserInfoLocked(parentId); 1114 if (parent == null) return null; 1115 } 1116 // If we're not adding a guest user and the limit has been reached, 1117 // cannot add a user. 1118 if (!isGuest && isUserLimitReachedLocked()) { 1119 return null; 1120 } 1121 // If we're adding a guest and there already exists one, bail. 1122 if (isGuest && numberOfUsersOfTypeLocked(UserInfo.FLAG_GUEST, true) > 0) { 1123 return null; 1124 } 1125 // Limit number of managed profiles that can be created 1126 if ((flags & UserInfo.FLAG_MANAGED_PROFILE) != 0 1127 && numberOfUsersOfTypeLocked(UserInfo.FLAG_MANAGED_PROFILE, true) 1128 >= MAX_MANAGED_PROFILES) { 1129 return null; 1130 } 1131 int userId = getNextAvailableIdLocked(); 1132 userInfo = new UserInfo(userId, name, null, flags); 1133 File userPath = new File(mBaseUserPath, Integer.toString(userId)); 1134 userInfo.serialNumber = mNextSerialNumber++; 1135 long now = System.currentTimeMillis(); 1136 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1137 userInfo.partial = true; 1138 Environment.getUserSystemDirectory(userInfo.id).mkdirs(); 1139 mUsers.put(userId, userInfo); 1140 writeUserListLocked(); 1141 if (parent != null) { 1142 if (parent.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1143 parent.profileGroupId = parent.id; 1144 writeUserLocked(parent); 1145 } 1146 userInfo.profileGroupId = parent.profileGroupId; 1147 } 1148 writeUserLocked(userInfo); 1149 mPm.createNewUserLILPw(userId, userPath); 1150 userInfo.partial = false; 1151 writeUserLocked(userInfo); 1152 updateUserIdsLocked(); 1153 Bundle restrictions = new Bundle(); 1154 mUserRestrictions.append(userId, restrictions); 1155 } 1156 } 1157 if (userInfo != null) { 1158 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 1159 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userInfo.id); 1160 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 1161 android.Manifest.permission.MANAGE_USERS); 1162 } 1163 } finally { 1164 Binder.restoreCallingIdentity(ident); 1165 } 1166 return userInfo; 1167 } 1168 1169 private int numberOfUsersOfTypeLocked(int flags, boolean excludeDying) { 1170 int count = 0; 1171 for (int i = mUsers.size() - 1; i >= 0; i--) { 1172 UserInfo user = mUsers.valueAt(i); 1173 if (!excludeDying || !mRemovingUserIds.get(user.id)) { 1174 if ((user.flags & flags) != 0) { 1175 count++; 1176 } 1177 } 1178 } 1179 return count; 1180 } 1181 1182 /** 1183 * Mark this guest user for deletion to allow us to create another guest 1184 * and switch to that user before actually removing this guest. 1185 * @param userHandle the userid of the current guest 1186 * @return whether the user could be marked for deletion 1187 */ 1188 public boolean markGuestForDeletion(int userHandle) { 1189 checkManageUsersPermission("Only the system can remove users"); 1190 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1191 UserManager.DISALLOW_REMOVE_USER, false)) { 1192 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1193 return false; 1194 } 1195 1196 long ident = Binder.clearCallingIdentity(); 1197 try { 1198 final UserInfo user; 1199 synchronized (mPackagesLock) { 1200 user = mUsers.get(userHandle); 1201 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1202 return false; 1203 } 1204 if (!user.isGuest()) { 1205 return false; 1206 } 1207 // Set this to a partially created user, so that the user will be purged 1208 // on next startup, in case the runtime stops now before stopping and 1209 // removing the user completely. 1210 user.partial = true; 1211 // Mark it as disabled, so that it isn't returned any more when 1212 // profiles are queried. 1213 user.flags |= UserInfo.FLAG_DISABLED; 1214 user.flags &= ~UserInfo.FLAG_GUEST; 1215 writeUserLocked(user); 1216 } 1217 } finally { 1218 Binder.restoreCallingIdentity(ident); 1219 } 1220 return true; 1221 } 1222 1223 /** 1224 * Removes a user and all data directories created for that user. This method should be called 1225 * after the user's processes have been terminated. 1226 * @param userHandle the user's id 1227 */ 1228 public boolean removeUser(int userHandle) { 1229 checkManageUsersPermission("Only the system can remove users"); 1230 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1231 UserManager.DISALLOW_REMOVE_USER, false)) { 1232 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1233 return false; 1234 } 1235 1236 long ident = Binder.clearCallingIdentity(); 1237 try { 1238 final UserInfo user; 1239 synchronized (mPackagesLock) { 1240 user = mUsers.get(userHandle); 1241 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1242 return false; 1243 } 1244 mRemovingUserIds.put(userHandle, true); 1245 try { 1246 mAppOpsService.removeUser(userHandle); 1247 } catch (RemoteException e) { 1248 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 1249 } 1250 // Set this to a partially created user, so that the user will be purged 1251 // on next startup, in case the runtime stops now before stopping and 1252 // removing the user completely. 1253 user.partial = true; 1254 // Mark it as disabled, so that it isn't returned any more when 1255 // profiles are queried. 1256 user.flags |= UserInfo.FLAG_DISABLED; 1257 writeUserLocked(user); 1258 } 1259 1260 if (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 1261 && user.isManagedProfile()) { 1262 // Send broadcast to notify system that the user removed was a 1263 // managed user. 1264 sendProfileRemovedBroadcast(user.profileGroupId, user.id); 1265 } 1266 1267 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 1268 int res; 1269 try { 1270 res = ActivityManagerNative.getDefault().stopUser(userHandle, 1271 new IStopUserCallback.Stub() { 1272 @Override 1273 public void userStopped(int userId) { 1274 finishRemoveUser(userId); 1275 } 1276 @Override 1277 public void userStopAborted(int userId) { 1278 } 1279 }); 1280 } catch (RemoteException e) { 1281 return false; 1282 } 1283 return res == ActivityManager.USER_OP_SUCCESS; 1284 } finally { 1285 Binder.restoreCallingIdentity(ident); 1286 } 1287 } 1288 1289 void finishRemoveUser(final int userHandle) { 1290 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 1291 // Let other services shutdown any activity and clean up their state before completely 1292 // wiping the user's system directory and removing from the user list 1293 long ident = Binder.clearCallingIdentity(); 1294 try { 1295 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 1296 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 1297 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 1298 android.Manifest.permission.MANAGE_USERS, 1299 1300 new BroadcastReceiver() { 1301 @Override 1302 public void onReceive(Context context, Intent intent) { 1303 if (DBG) { 1304 Slog.i(LOG_TAG, 1305 "USER_REMOVED broadcast sent, cleaning up user data " 1306 + userHandle); 1307 } 1308 new Thread() { 1309 public void run() { 1310 synchronized (mInstallLock) { 1311 synchronized (mPackagesLock) { 1312 removeUserStateLocked(userHandle); 1313 } 1314 } 1315 } 1316 }.start(); 1317 } 1318 }, 1319 1320 null, Activity.RESULT_OK, null, null); 1321 } finally { 1322 Binder.restoreCallingIdentity(ident); 1323 } 1324 } 1325 1326 private void removeUserStateLocked(final int userHandle) { 1327 // Cleanup package manager settings 1328 mPm.cleanUpUserLILPw(this, userHandle); 1329 1330 // Remove this user from the list 1331 mUsers.remove(userHandle); 1332 1333 // Have user ID linger for several seconds to let external storage VFS 1334 // cache entries expire. This must be greater than the 'entry_valid' 1335 // timeout used by the FUSE daemon. 1336 mHandler.postDelayed(new Runnable() { 1337 @Override 1338 public void run() { 1339 synchronized (mPackagesLock) { 1340 mRemovingUserIds.delete(userHandle); 1341 } 1342 } 1343 }, MINUTE_IN_MILLIS); 1344 1345 mRestrictionsPinStates.remove(userHandle); 1346 // Remove user file 1347 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 1348 userFile.delete(); 1349 // Update the user list 1350 writeUserListLocked(); 1351 updateUserIdsLocked(); 1352 removeDirectoryRecursive(Environment.getUserSystemDirectory(userHandle)); 1353 } 1354 1355 private void removeDirectoryRecursive(File parent) { 1356 if (parent.isDirectory()) { 1357 String[] files = parent.list(); 1358 for (String filename : files) { 1359 File child = new File(parent, filename); 1360 removeDirectoryRecursive(child); 1361 } 1362 } 1363 parent.delete(); 1364 } 1365 1366 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 1367 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 1368 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 1369 Intent.FLAG_RECEIVER_FOREGROUND); 1370 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 1371 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 1372 } 1373 1374 @Override 1375 public Bundle getApplicationRestrictions(String packageName) { 1376 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 1377 } 1378 1379 @Override 1380 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 1381 if (UserHandle.getCallingUserId() != userId 1382 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 1383 checkManageUsersPermission("Only system can get restrictions for other users/apps"); 1384 } 1385 synchronized (mPackagesLock) { 1386 // Read the restrictions from XML 1387 return readApplicationRestrictionsLocked(packageName, userId); 1388 } 1389 } 1390 1391 @Override 1392 public void setApplicationRestrictions(String packageName, Bundle restrictions, 1393 int userId) { 1394 if (UserHandle.getCallingUserId() != userId 1395 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 1396 checkManageUsersPermission("Only system can set restrictions for other users/apps"); 1397 } 1398 synchronized (mPackagesLock) { 1399 if (restrictions == null || restrictions.isEmpty()) { 1400 cleanAppRestrictionsForPackage(packageName, userId); 1401 } else { 1402 // Write the restrictions to XML 1403 writeApplicationRestrictionsLocked(packageName, restrictions, userId); 1404 } 1405 } 1406 1407 if (isPackageInstalled(packageName, userId)) { 1408 // Notify package of changes via an intent - only sent to explicitly registered receivers. 1409 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 1410 changeIntent.setPackage(packageName); 1411 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1412 mContext.sendBroadcastAsUser(changeIntent, new UserHandle(userId)); 1413 } 1414 } 1415 1416 @Override 1417 public boolean setRestrictionsChallenge(String newPin) { 1418 checkManageUsersPermission("Only system can modify the restrictions pin"); 1419 int userId = UserHandle.getCallingUserId(); 1420 synchronized (mPackagesLock) { 1421 RestrictionsPinState pinState = mRestrictionsPinStates.get(userId); 1422 if (pinState == null) { 1423 pinState = new RestrictionsPinState(); 1424 } 1425 if (newPin == null) { 1426 pinState.salt = 0; 1427 pinState.pinHash = null; 1428 } else { 1429 try { 1430 pinState.salt = SecureRandom.getInstance("SHA1PRNG").nextLong(); 1431 } catch (NoSuchAlgorithmException e) { 1432 pinState.salt = (long) (Math.random() * Long.MAX_VALUE); 1433 } 1434 pinState.pinHash = passwordToHash(newPin, pinState.salt); 1435 pinState.failedAttempts = 0; 1436 } 1437 mRestrictionsPinStates.put(userId, pinState); 1438 writeUserLocked(mUsers.get(userId)); 1439 } 1440 return true; 1441 } 1442 1443 @Override 1444 public int checkRestrictionsChallenge(String pin) { 1445 checkManageUsersPermission("Only system can verify the restrictions pin"); 1446 int userId = UserHandle.getCallingUserId(); 1447 synchronized (mPackagesLock) { 1448 RestrictionsPinState pinState = mRestrictionsPinStates.get(userId); 1449 // If there's no pin set, return error code 1450 if (pinState == null || pinState.salt == 0 || pinState.pinHash == null) { 1451 return UserManager.PIN_VERIFICATION_FAILED_NOT_SET; 1452 } else if (pin == null) { 1453 // If just checking if user can be prompted, return remaining time 1454 int waitTime = getRemainingTimeForPinAttempt(pinState); 1455 Slog.d(LOG_TAG, "Remaining waittime peek=" + waitTime); 1456 return waitTime; 1457 } else { 1458 int waitTime = getRemainingTimeForPinAttempt(pinState); 1459 Slog.d(LOG_TAG, "Remaining waittime=" + waitTime); 1460 if (waitTime > 0) { 1461 return waitTime; 1462 } 1463 if (passwordToHash(pin, pinState.salt).equals(pinState.pinHash)) { 1464 pinState.failedAttempts = 0; 1465 writeUserLocked(mUsers.get(userId)); 1466 return UserManager.PIN_VERIFICATION_SUCCESS; 1467 } else { 1468 pinState.failedAttempts++; 1469 pinState.lastAttemptTime = System.currentTimeMillis(); 1470 writeUserLocked(mUsers.get(userId)); 1471 return waitTime; 1472 } 1473 } 1474 } 1475 } 1476 1477 private int getRemainingTimeForPinAttempt(RestrictionsPinState pinState) { 1478 int backoffIndex = Math.min(pinState.failedAttempts / BACKOFF_INC_INTERVAL, 1479 BACKOFF_TIMES.length - 1); 1480 int backoffTime = (pinState.failedAttempts % BACKOFF_INC_INTERVAL) == 0 ? 1481 BACKOFF_TIMES[backoffIndex] : 0; 1482 return (int) Math.max(backoffTime + pinState.lastAttemptTime - System.currentTimeMillis(), 1483 0); 1484 } 1485 1486 @Override 1487 public boolean hasRestrictionsChallenge() { 1488 int userId = UserHandle.getCallingUserId(); 1489 synchronized (mPackagesLock) { 1490 return hasRestrictionsPinLocked(userId); 1491 } 1492 } 1493 1494 private boolean hasRestrictionsPinLocked(int userId) { 1495 RestrictionsPinState pinState = mRestrictionsPinStates.get(userId); 1496 if (pinState == null || pinState.salt == 0 || pinState.pinHash == null) { 1497 return false; 1498 } 1499 return true; 1500 } 1501 1502 @Override 1503 public void removeRestrictions() { 1504 checkManageUsersPermission("Only system can remove restrictions"); 1505 final int userHandle = UserHandle.getCallingUserId(); 1506 removeRestrictionsForUser(userHandle, true); 1507 } 1508 1509 private void removeRestrictionsForUser(final int userHandle, boolean unhideApps) { 1510 synchronized (mPackagesLock) { 1511 // Remove all user restrictions 1512 setUserRestrictions(new Bundle(), userHandle); 1513 // Remove restrictions pin 1514 setRestrictionsChallenge(null); 1515 // Remove any app restrictions 1516 cleanAppRestrictions(userHandle); 1517 } 1518 if (unhideApps) { 1519 unhideAllInstalledAppsForUser(userHandle); 1520 } 1521 } 1522 1523 private void unhideAllInstalledAppsForUser(final int userHandle) { 1524 mHandler.post(new Runnable() { 1525 @Override 1526 public void run() { 1527 List<ApplicationInfo> apps = 1528 mPm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES, 1529 userHandle).getList(); 1530 final long ident = Binder.clearCallingIdentity(); 1531 try { 1532 for (ApplicationInfo appInfo : apps) { 1533 if ((appInfo.flags & ApplicationInfo.FLAG_INSTALLED) != 0 1534 && (appInfo.flags & ApplicationInfo.FLAG_HIDDEN) != 0) { 1535 mPm.setApplicationHiddenSettingAsUser(appInfo.packageName, false, 1536 userHandle); 1537 } 1538 } 1539 } finally { 1540 Binder.restoreCallingIdentity(ident); 1541 } 1542 } 1543 }); 1544 } 1545 1546 /* 1547 * Generate a hash for the given password. To avoid brute force attacks, we use a salted hash. 1548 * Not the most secure, but it is at least a second level of protection. First level is that 1549 * the file is in a location only readable by the system process. 1550 * @param password the password. 1551 * @param salt the randomly generated salt 1552 * @return the hash of the pattern in a String. 1553 */ 1554 private String passwordToHash(String password, long salt) { 1555 if (password == null) { 1556 return null; 1557 } 1558 String algo = null; 1559 String hashed = salt + password; 1560 try { 1561 byte[] saltedPassword = (password + salt).getBytes(); 1562 byte[] sha1 = MessageDigest.getInstance(algo = "SHA-1").digest(saltedPassword); 1563 byte[] md5 = MessageDigest.getInstance(algo = "MD5").digest(saltedPassword); 1564 hashed = toHex(sha1) + toHex(md5); 1565 } catch (NoSuchAlgorithmException e) { 1566 Log.w(LOG_TAG, "Failed to encode string because of missing algorithm: " + algo); 1567 } 1568 return hashed; 1569 } 1570 1571 private static String toHex(byte[] ary) { 1572 final String hex = "0123456789ABCDEF"; 1573 String ret = ""; 1574 for (int i = 0; i < ary.length; i++) { 1575 ret += hex.charAt((ary[i] >> 4) & 0xf); 1576 ret += hex.charAt(ary[i] & 0xf); 1577 } 1578 return ret; 1579 } 1580 1581 private int getUidForPackage(String packageName) { 1582 long ident = Binder.clearCallingIdentity(); 1583 try { 1584 return mContext.getPackageManager().getApplicationInfo(packageName, 1585 PackageManager.GET_UNINSTALLED_PACKAGES).uid; 1586 } catch (NameNotFoundException nnfe) { 1587 return -1; 1588 } finally { 1589 Binder.restoreCallingIdentity(ident); 1590 } 1591 } 1592 1593 private Bundle readApplicationRestrictionsLocked(String packageName, 1594 int userId) { 1595 final Bundle restrictions = new Bundle(); 1596 final ArrayList<String> values = new ArrayList<String>(); 1597 1598 FileInputStream fis = null; 1599 try { 1600 AtomicFile restrictionsFile = 1601 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 1602 packageToRestrictionsFileName(packageName))); 1603 fis = restrictionsFile.openRead(); 1604 XmlPullParser parser = Xml.newPullParser(); 1605 parser.setInput(fis, null); 1606 int type; 1607 while ((type = parser.next()) != XmlPullParser.START_TAG 1608 && type != XmlPullParser.END_DOCUMENT) { 1609 ; 1610 } 1611 1612 if (type != XmlPullParser.START_TAG) { 1613 Slog.e(LOG_TAG, "Unable to read restrictions file " 1614 + restrictionsFile.getBaseFile()); 1615 return restrictions; 1616 } 1617 1618 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1619 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 1620 String key = parser.getAttributeValue(null, ATTR_KEY); 1621 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 1622 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 1623 if (multiple != null) { 1624 values.clear(); 1625 int count = Integer.parseInt(multiple); 1626 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1627 if (type == XmlPullParser.START_TAG 1628 && parser.getName().equals(TAG_VALUE)) { 1629 values.add(parser.nextText().trim()); 1630 count--; 1631 } 1632 } 1633 String [] valueStrings = new String[values.size()]; 1634 values.toArray(valueStrings); 1635 restrictions.putStringArray(key, valueStrings); 1636 } else { 1637 String value = parser.nextText().trim(); 1638 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 1639 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 1640 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 1641 restrictions.putInt(key, Integer.parseInt(value)); 1642 } else { 1643 restrictions.putString(key, value); 1644 } 1645 } 1646 } 1647 } 1648 } catch (IOException ioe) { 1649 } catch (XmlPullParserException pe) { 1650 } finally { 1651 if (fis != null) { 1652 try { 1653 fis.close(); 1654 } catch (IOException e) { 1655 } 1656 } 1657 } 1658 return restrictions; 1659 } 1660 1661 private void writeApplicationRestrictionsLocked(String packageName, 1662 Bundle restrictions, int userId) { 1663 FileOutputStream fos = null; 1664 AtomicFile restrictionsFile = new AtomicFile( 1665 new File(Environment.getUserSystemDirectory(userId), 1666 packageToRestrictionsFileName(packageName))); 1667 try { 1668 fos = restrictionsFile.startWrite(); 1669 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1670 1671 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1672 final XmlSerializer serializer = new FastXmlSerializer(); 1673 serializer.setOutput(bos, "utf-8"); 1674 serializer.startDocument(null, true); 1675 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1676 1677 serializer.startTag(null, TAG_RESTRICTIONS); 1678 1679 for (String key : restrictions.keySet()) { 1680 Object value = restrictions.get(key); 1681 serializer.startTag(null, TAG_ENTRY); 1682 serializer.attribute(null, ATTR_KEY, key); 1683 1684 if (value instanceof Boolean) { 1685 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 1686 serializer.text(value.toString()); 1687 } else if (value instanceof Integer) { 1688 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 1689 serializer.text(value.toString()); 1690 } else if (value == null || value instanceof String) { 1691 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 1692 serializer.text(value != null ? (String) value : ""); 1693 } else { 1694 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 1695 String[] values = (String[]) value; 1696 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 1697 for (String choice : values) { 1698 serializer.startTag(null, TAG_VALUE); 1699 serializer.text(choice != null ? choice : ""); 1700 serializer.endTag(null, TAG_VALUE); 1701 } 1702 } 1703 serializer.endTag(null, TAG_ENTRY); 1704 } 1705 1706 serializer.endTag(null, TAG_RESTRICTIONS); 1707 1708 serializer.endDocument(); 1709 restrictionsFile.finishWrite(fos); 1710 } catch (Exception e) { 1711 restrictionsFile.failWrite(fos); 1712 Slog.e(LOG_TAG, "Error writing application restrictions list"); 1713 } 1714 } 1715 1716 @Override 1717 public int getUserSerialNumber(int userHandle) { 1718 synchronized (mPackagesLock) { 1719 if (!exists(userHandle)) return -1; 1720 return getUserInfoLocked(userHandle).serialNumber; 1721 } 1722 } 1723 1724 @Override 1725 public int getUserHandle(int userSerialNumber) { 1726 synchronized (mPackagesLock) { 1727 for (int userId : mUserIds) { 1728 if (getUserInfoLocked(userId).serialNumber == userSerialNumber) return userId; 1729 } 1730 // Not found 1731 return -1; 1732 } 1733 } 1734 1735 /** 1736 * Caches the list of user ids in an array, adjusting the array size when necessary. 1737 */ 1738 private void updateUserIdsLocked() { 1739 int num = 0; 1740 for (int i = 0; i < mUsers.size(); i++) { 1741 if (!mUsers.valueAt(i).partial) { 1742 num++; 1743 } 1744 } 1745 final int[] newUsers = new int[num]; 1746 int n = 0; 1747 for (int i = 0; i < mUsers.size(); i++) { 1748 if (!mUsers.valueAt(i).partial) { 1749 newUsers[n++] = mUsers.keyAt(i); 1750 } 1751 } 1752 mUserIds = newUsers; 1753 } 1754 1755 /** 1756 * Make a note of the last started time of a user and do some cleanup. 1757 * @param userId the user that was just foregrounded 1758 */ 1759 public void userForeground(int userId) { 1760 synchronized (mPackagesLock) { 1761 UserInfo user = mUsers.get(userId); 1762 long now = System.currentTimeMillis(); 1763 if (user == null || user.partial) { 1764 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 1765 return; 1766 } 1767 if (now > EPOCH_PLUS_30_YEARS) { 1768 user.lastLoggedInTime = now; 1769 writeUserLocked(user); 1770 } 1771 } 1772 } 1773 1774 /** 1775 * Returns the next available user id, filling in any holes in the ids. 1776 * TODO: May not be a good idea to recycle ids, in case it results in confusion 1777 * for data and battery stats collection, or unexpected cross-talk. 1778 * @return 1779 */ 1780 private int getNextAvailableIdLocked() { 1781 synchronized (mPackagesLock) { 1782 int i = MIN_USER_ID; 1783 while (i < Integer.MAX_VALUE) { 1784 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 1785 break; 1786 } 1787 i++; 1788 } 1789 return i; 1790 } 1791 } 1792 1793 private String packageToRestrictionsFileName(String packageName) { 1794 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 1795 } 1796 1797 private String restrictionsFileNameToPackage(String fileName) { 1798 return fileName.substring(RESTRICTIONS_FILE_PREFIX.length(), 1799 (int) (fileName.length() - XML_SUFFIX.length())); 1800 } 1801 1802 @Override 1803 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1804 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 1805 != PackageManager.PERMISSION_GRANTED) { 1806 pw.println("Permission Denial: can't dump UserManager from from pid=" 1807 + Binder.getCallingPid() 1808 + ", uid=" + Binder.getCallingUid() 1809 + " without permission " 1810 + android.Manifest.permission.DUMP); 1811 return; 1812 } 1813 1814 long now = System.currentTimeMillis(); 1815 StringBuilder sb = new StringBuilder(); 1816 synchronized (mPackagesLock) { 1817 pw.println("Users:"); 1818 for (int i = 0; i < mUsers.size(); i++) { 1819 UserInfo user = mUsers.valueAt(i); 1820 if (user == null) continue; 1821 pw.print(" "); pw.print(user); pw.print(" serialNo="); pw.print(user.serialNumber); 1822 if (mRemovingUserIds.get(mUsers.keyAt(i))) pw.print(" <removing> "); 1823 if (user.partial) pw.print(" <partial>"); 1824 pw.println(); 1825 pw.print(" Created: "); 1826 if (user.creationTime == 0) { 1827 pw.println("<unknown>"); 1828 } else { 1829 sb.setLength(0); 1830 TimeUtils.formatDuration(now - user.creationTime, sb); 1831 sb.append(" ago"); 1832 pw.println(sb); 1833 } 1834 pw.print(" Last logged in: "); 1835 if (user.lastLoggedInTime == 0) { 1836 pw.println("<unknown>"); 1837 } else { 1838 sb.setLength(0); 1839 TimeUtils.formatDuration(now - user.lastLoggedInTime, sb); 1840 sb.append(" ago"); 1841 pw.println(sb); 1842 } 1843 } 1844 } 1845 } 1846} 1847