UserManagerService.java revision b61579950461fca161e570f079f1f4d09389c49f
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.google.android.collect.Sets; 54 55import com.android.internal.annotations.VisibleForTesting; 56import com.android.internal.app.IAppOpsService; 57import com.android.internal.util.ArrayUtils; 58import com.android.internal.util.FastXmlSerializer; 59import com.android.internal.util.XmlUtils; 60 61import org.xmlpull.v1.XmlPullParser; 62import org.xmlpull.v1.XmlPullParserException; 63import org.xmlpull.v1.XmlSerializer; 64 65import java.io.BufferedOutputStream; 66import java.io.File; 67import java.io.FileDescriptor; 68import java.io.FileInputStream; 69import java.io.FileNotFoundException; 70import java.io.FileOutputStream; 71import java.io.IOException; 72import java.io.PrintWriter; 73import java.nio.charset.StandardCharsets; 74import java.util.ArrayList; 75import java.util.List; 76import java.util.Set; 77 78import libcore.io.IoUtils; 79 80public class UserManagerService extends IUserManager.Stub { 81 82 private static final String LOG_TAG = "UserManagerService"; 83 84 private static final boolean DBG = false; 85 86 private static final String TAG_NAME = "name"; 87 private static final String ATTR_FLAGS = "flags"; 88 private static final String ATTR_ICON_PATH = "icon"; 89 private static final String ATTR_ID = "id"; 90 private static final String ATTR_CREATION_TIME = "created"; 91 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 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_GUEST_TO_REMOVE = "guestToRemove"; 96 private static final String ATTR_USER_VERSION = "version"; 97 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 98 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 99 private static final String TAG_USERS = "users"; 100 private static final String TAG_USER = "user"; 101 private static final String TAG_RESTRICTIONS = "restrictions"; 102 private static final String TAG_ENTRY = "entry"; 103 private static final String TAG_VALUE = "value"; 104 private static final String ATTR_KEY = "key"; 105 private static final String ATTR_VALUE_TYPE = "type"; 106 private static final String ATTR_MULTIPLE = "m"; 107 108 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 109 private static final String ATTR_TYPE_STRING = "s"; 110 private static final String ATTR_TYPE_BOOLEAN = "b"; 111 private static final String ATTR_TYPE_INTEGER = "i"; 112 private static final String ATTR_TYPE_BUNDLE = "B"; 113 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 114 115 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 116 private static final String USER_LIST_FILENAME = "userlist.xml"; 117 private static final String USER_PHOTO_FILENAME = "photo.png"; 118 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 119 120 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 121 private static final String XML_SUFFIX = ".xml"; 122 123 private static final int MIN_USER_ID = 10; 124 125 private static final int USER_VERSION = 5; 126 127 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 128 129 // Maximum number of managed profiles permitted is 1. This cannot be increased 130 // without first making sure that the rest of the framework is prepared for it. 131 private static final int MAX_MANAGED_PROFILES = 1; 132 133 // Set of user restrictions, which can only be enforced by the system 134 private static final Set<String> SYSTEM_CONTROLLED_RESTRICTIONS = Sets.newArraySet( 135 UserManager.DISALLOW_RECORD_AUDIO); 136 137 static final int WRITE_USER_MSG = 1; 138 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 139 140 private final Context mContext; 141 private final PackageManagerService mPm; 142 private final Object mInstallLock; 143 private final Object mPackagesLock; 144 145 private final Handler mHandler; 146 147 private final File mUsersDir; 148 private final File mUserListFile; 149 private final File mBaseUserPath; 150 151 private final SparseArray<UserInfo> mUsers = new SparseArray<UserInfo>(); 152 private final SparseArray<Bundle> mUserRestrictions = new SparseArray<Bundle>(); 153 private final Bundle mGuestRestrictions = new Bundle(); 154 155 /** 156 * Set of user IDs being actively removed. Removed IDs linger in this set 157 * for several seconds to work around a VFS caching issue. 158 */ 159 // @GuardedBy("mPackagesLock") 160 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 161 162 private int[] mUserIds; 163 private int mNextSerialNumber; 164 private int mUserVersion = 0; 165 166 private IAppOpsService mAppOpsService; 167 168 private static UserManagerService sInstance; 169 170 public static UserManagerService getInstance() { 171 synchronized (UserManagerService.class) { 172 return sInstance; 173 } 174 } 175 176 /** 177 * Available for testing purposes. 178 */ 179 UserManagerService(File dataDir, File baseUserPath) { 180 this(null, null, new Object(), new Object(), dataDir, baseUserPath); 181 } 182 183 /** 184 * Called by package manager to create the service. This is closely 185 * associated with the package manager, and the given lock is the 186 * package manager's own lock. 187 */ 188 UserManagerService(Context context, PackageManagerService pm, 189 Object installLock, Object packagesLock) { 190 this(context, pm, installLock, packagesLock, 191 Environment.getDataDirectory(), 192 new File(Environment.getDataDirectory(), "user")); 193 } 194 195 /** 196 * Available for testing purposes. 197 */ 198 private UserManagerService(Context context, PackageManagerService pm, 199 Object installLock, Object packagesLock, 200 File dataDir, File baseUserPath) { 201 mContext = context; 202 mPm = pm; 203 mInstallLock = installLock; 204 mPackagesLock = packagesLock; 205 mHandler = new MainHandler(); 206 synchronized (mInstallLock) { 207 synchronized (mPackagesLock) { 208 mUsersDir = new File(dataDir, USER_INFO_DIR); 209 mUsersDir.mkdirs(); 210 // Make zeroth user directory, for services to migrate their files to that location 211 File userZeroDir = new File(mUsersDir, "0"); 212 userZeroDir.mkdirs(); 213 mBaseUserPath = baseUserPath; 214 FileUtils.setPermissions(mUsersDir.toString(), 215 FileUtils.S_IRWXU|FileUtils.S_IRWXG 216 |FileUtils.S_IROTH|FileUtils.S_IXOTH, 217 -1, -1); 218 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 219 initDefaultGuestRestrictions(); 220 readUserListLocked(); 221 sInstance = this; 222 } 223 } 224 } 225 226 void systemReady() { 227 synchronized (mInstallLock) { 228 synchronized (mPackagesLock) { 229 // Prune out any partially created/partially removed users. 230 ArrayList<UserInfo> partials = new ArrayList<UserInfo>(); 231 for (int i = 0; i < mUsers.size(); i++) { 232 UserInfo ui = mUsers.valueAt(i); 233 if ((ui.partial || ui.guestToRemove) && i != 0) { 234 partials.add(ui); 235 } 236 } 237 for (int i = 0; i < partials.size(); i++) { 238 UserInfo ui = partials.get(i); 239 Slog.w(LOG_TAG, "Removing partially created user #" + i 240 + " (name=" + ui.name + ")"); 241 removeUserStateLocked(ui.id); 242 } 243 } 244 } 245 onUserForeground(UserHandle.USER_OWNER); 246 mAppOpsService = IAppOpsService.Stub.asInterface( 247 ServiceManager.getService(Context.APP_OPS_SERVICE)); 248 for (int i = 0; i < mUserIds.length; ++i) { 249 try { 250 mAppOpsService.setUserRestrictions(mUserRestrictions.get(mUserIds[i]), mUserIds[i]); 251 } catch (RemoteException e) { 252 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 253 } 254 } 255 } 256 257 @Override 258 public List<UserInfo> getUsers(boolean excludeDying) { 259 checkManageUsersPermission("query users"); 260 synchronized (mPackagesLock) { 261 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 262 for (int i = 0; i < mUsers.size(); i++) { 263 UserInfo ui = mUsers.valueAt(i); 264 if (ui.partial) { 265 continue; 266 } 267 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 268 users.add(ui); 269 } 270 } 271 return users; 272 } 273 } 274 275 @Override 276 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 277 if (userId != UserHandle.getCallingUserId()) { 278 checkManageUsersPermission("getting profiles related to user " + userId); 279 } 280 final long ident = Binder.clearCallingIdentity(); 281 try { 282 synchronized (mPackagesLock) { 283 return getProfilesLocked(userId, enabledOnly); 284 } 285 } finally { 286 Binder.restoreCallingIdentity(ident); 287 } 288 } 289 290 /** Assume permissions already checked and caller's identity cleared */ 291 private List<UserInfo> getProfilesLocked(int userId, boolean enabledOnly) { 292 UserInfo user = getUserInfoLocked(userId); 293 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 294 if (user == null) { 295 // Probably a dying user 296 return users; 297 } 298 for (int i = 0; i < mUsers.size(); i++) { 299 UserInfo profile = mUsers.valueAt(i); 300 if (!isProfileOf(user, profile)) { 301 continue; 302 } 303 if (enabledOnly && !profile.isEnabled()) { 304 continue; 305 } 306 if (mRemovingUserIds.get(profile.id)) { 307 continue; 308 } 309 users.add(profile); 310 } 311 return users; 312 } 313 314 @Override 315 public UserInfo getProfileParent(int userHandle) { 316 checkManageUsersPermission("get the profile parent"); 317 synchronized (mPackagesLock) { 318 return getProfileParentLocked(userHandle); 319 } 320 } 321 322 private UserInfo getProfileParentLocked(int userHandle) { 323 UserInfo profile = getUserInfoLocked(userHandle); 324 if (profile == null) { 325 return null; 326 } 327 int parentUserId = profile.profileGroupId; 328 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 329 return null; 330 } else { 331 return getUserInfoLocked(parentUserId); 332 } 333 } 334 335 private boolean isProfileOf(UserInfo user, UserInfo profile) { 336 return user.id == profile.id || 337 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 338 && user.profileGroupId == profile.profileGroupId); 339 } 340 341 @Override 342 public void setUserEnabled(int userId) { 343 checkManageUsersPermission("enable user"); 344 synchronized (mPackagesLock) { 345 UserInfo info = getUserInfoLocked(userId); 346 if (info != null && !info.isEnabled()) { 347 info.flags ^= UserInfo.FLAG_DISABLED; 348 writeUserLocked(info); 349 } 350 } 351 } 352 353 @Override 354 public UserInfo getUserInfo(int userId) { 355 checkManageUsersPermission("query user"); 356 synchronized (mPackagesLock) { 357 return getUserInfoLocked(userId); 358 } 359 } 360 361 @Override 362 public boolean isRestricted() { 363 synchronized (mPackagesLock) { 364 return getUserInfoLocked(UserHandle.getCallingUserId()).isRestricted(); 365 } 366 } 367 368 /* 369 * Should be locked on mUsers before calling this. 370 */ 371 private UserInfo getUserInfoLocked(int userId) { 372 UserInfo ui = mUsers.get(userId); 373 // If it is partial and not in the process of being removed, return as unknown user. 374 if (ui != null && ui.partial && !mRemovingUserIds.get(userId)) { 375 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 376 return null; 377 } 378 return ui; 379 } 380 381 public boolean exists(int userId) { 382 synchronized (mPackagesLock) { 383 return ArrayUtils.contains(mUserIds, userId); 384 } 385 } 386 387 @Override 388 public void setUserName(int userId, String name) { 389 checkManageUsersPermission("rename users"); 390 boolean changed = false; 391 synchronized (mPackagesLock) { 392 UserInfo info = mUsers.get(userId); 393 if (info == null || info.partial) { 394 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 395 return; 396 } 397 if (name != null && !name.equals(info.name)) { 398 info.name = name; 399 writeUserLocked(info); 400 changed = true; 401 } 402 } 403 if (changed) { 404 sendUserInfoChangedBroadcast(userId); 405 } 406 } 407 408 @Override 409 public void setUserIcon(int userId, Bitmap bitmap) { 410 checkManageUsersPermission("update users"); 411 long ident = Binder.clearCallingIdentity(); 412 try { 413 synchronized (mPackagesLock) { 414 UserInfo info = mUsers.get(userId); 415 if (info == null || info.partial) { 416 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 417 return; 418 } 419 writeBitmapLocked(info, bitmap); 420 writeUserLocked(info); 421 } 422 sendUserInfoChangedBroadcast(userId); 423 } finally { 424 Binder.restoreCallingIdentity(ident); 425 } 426 } 427 428 private void sendUserInfoChangedBroadcast(int userId) { 429 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 430 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 431 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 432 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 433 } 434 435 @Override 436 public ParcelFileDescriptor getUserIcon(int userId) { 437 String iconPath; 438 synchronized (mPackagesLock) { 439 UserInfo info = mUsers.get(userId); 440 if (info == null || info.partial) { 441 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + userId); 442 return null; 443 } 444 int callingGroupId = mUsers.get(UserHandle.getCallingUserId()).profileGroupId; 445 if (callingGroupId == UserInfo.NO_PROFILE_GROUP_ID 446 || callingGroupId != info.profileGroupId) { 447 checkManageUsersPermission("get the icon of a user who is not related"); 448 } 449 if (info.iconPath == null) { 450 return null; 451 } 452 iconPath = info.iconPath; 453 } 454 455 try { 456 return ParcelFileDescriptor.open( 457 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 458 } catch (FileNotFoundException e) { 459 Log.e(LOG_TAG, "Couldn't find icon file", e); 460 } 461 return null; 462 } 463 464 public void makeInitialized(int userId) { 465 checkManageUsersPermission("makeInitialized"); 466 synchronized (mPackagesLock) { 467 UserInfo info = mUsers.get(userId); 468 if (info == null || info.partial) { 469 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 470 } 471 if ((info.flags&UserInfo.FLAG_INITIALIZED) == 0) { 472 info.flags |= UserInfo.FLAG_INITIALIZED; 473 scheduleWriteUserLocked(info); 474 } 475 } 476 } 477 478 /** 479 * If default guest restrictions haven't been initialized yet, add the basic 480 * restrictions. 481 */ 482 private void initDefaultGuestRestrictions() { 483 if (mGuestRestrictions.isEmpty()) { 484 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 485 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 486 } 487 } 488 489 @Override 490 public Bundle getDefaultGuestRestrictions() { 491 checkManageUsersPermission("getDefaultGuestRestrictions"); 492 synchronized (mPackagesLock) { 493 return new Bundle(mGuestRestrictions); 494 } 495 } 496 497 @Override 498 public void setDefaultGuestRestrictions(Bundle restrictions) { 499 checkManageUsersPermission("setDefaultGuestRestrictions"); 500 synchronized (mPackagesLock) { 501 mGuestRestrictions.clear(); 502 mGuestRestrictions.putAll(restrictions); 503 writeUserListLocked(); 504 } 505 } 506 507 @Override 508 public boolean hasUserRestriction(String restrictionKey, int userId) { 509 synchronized (mPackagesLock) { 510 Bundle restrictions = mUserRestrictions.get(userId); 511 return restrictions != null && restrictions.getBoolean(restrictionKey); 512 } 513 } 514 515 @Override 516 public Bundle getUserRestrictions(int userId) { 517 // checkManageUsersPermission("getUserRestrictions"); 518 519 synchronized (mPackagesLock) { 520 Bundle restrictions = mUserRestrictions.get(userId); 521 return restrictions != null ? new Bundle(restrictions) : new Bundle(); 522 } 523 } 524 525 @Override 526 public void setUserRestriction(String key, boolean value, int userId) { 527 synchronized (mPackagesLock) { 528 if (!SYSTEM_CONTROLLED_RESTRICTIONS.contains(key)) { 529 Bundle restrictions = getUserRestrictions(userId); 530 restrictions.putBoolean(key, value); 531 setUserRestrictionsInternalLocked(restrictions, userId); 532 } 533 } 534 } 535 536 @Override 537 public void setSystemControlledUserRestriction(String key, boolean value, int userId) { 538 checkSystemOrRoot("setSystemControlledUserRestriction"); 539 synchronized (mPackagesLock) { 540 Bundle restrictions = getUserRestrictions(userId); 541 restrictions.putBoolean(key, value); 542 setUserRestrictionsInternalLocked(restrictions, userId); 543 } 544 } 545 546 @Override 547 public void setUserRestrictions(Bundle restrictions, int userId) { 548 checkManageUsersPermission("setUserRestrictions"); 549 if (restrictions == null) return; 550 551 synchronized (mPackagesLock) { 552 final Bundle oldUserRestrictions = mUserRestrictions.get(userId); 553 // Restore the original state of system controlled restrictions from oldUserRestrictions 554 for (String key : SYSTEM_CONTROLLED_RESTRICTIONS) { 555 restrictions.remove(key); 556 if (oldUserRestrictions.containsKey(key)) { 557 restrictions.putBoolean(key, oldUserRestrictions.getBoolean(key)); 558 } 559 } 560 setUserRestrictionsInternalLocked(restrictions, userId); 561 } 562 } 563 564 private void setUserRestrictionsInternalLocked(Bundle restrictions, int userId) { 565 final Bundle userRestrictions = mUserRestrictions.get(userId); 566 userRestrictions.clear(); 567 userRestrictions.putAll(restrictions); 568 long token = Binder.clearCallingIdentity(); 569 try { 570 mAppOpsService.setUserRestrictions(userRestrictions, userId); 571 } catch (RemoteException e) { 572 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 573 } finally { 574 Binder.restoreCallingIdentity(token); 575 } 576 scheduleWriteUserLocked(mUsers.get(userId)); 577 } 578 579 /** 580 * Check if we've hit the limit of how many users can be created. 581 */ 582 private boolean isUserLimitReachedLocked() { 583 return getAliveUsersExcludingGuestsCountLocked() >= UserManager.getMaxSupportedUsers(); 584 } 585 586 @Override 587 public boolean canAddMoreManagedProfiles() { 588 checkManageUsersPermission("check if more managed profiles can be added."); 589 if (ActivityManager.isLowRamDeviceStatic()) { 590 return false; 591 } 592 if (!mContext.getPackageManager().hasSystemFeature( 593 PackageManager.FEATURE_MANAGED_USERS)) { 594 return false; 595 } 596 synchronized(mPackagesLock) { 597 // Limit number of managed profiles that can be created 598 if (numberOfUsersOfTypeLocked(UserInfo.FLAG_MANAGED_PROFILE, true) 599 >= MAX_MANAGED_PROFILES) { 600 return false; 601 } 602 int usersCount = getAliveUsersExcludingGuestsCountLocked(); 603 // We allow creating a managed profile in the special case where there is only one user. 604 return usersCount == 1 || usersCount < UserManager.getMaxSupportedUsers(); 605 } 606 } 607 608 private int getAliveUsersExcludingGuestsCountLocked() { 609 int aliveUserCount = 0; 610 final int totalUserCount = mUsers.size(); 611 // Skip over users being removed 612 for (int i = 0; i < totalUserCount; i++) { 613 UserInfo user = mUsers.valueAt(i); 614 if (!mRemovingUserIds.get(user.id) 615 && !user.isGuest() && !user.partial) { 616 aliveUserCount++; 617 } 618 } 619 return aliveUserCount; 620 } 621 622 /** 623 * Enforces that only the system UID or root's UID or apps that have the 624 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 625 * permission can make certain calls to the UserManager. 626 * 627 * @param message used as message if SecurityException is thrown 628 * @throws SecurityException if the caller is not system or root 629 */ 630 private static final void checkManageUsersPermission(String message) { 631 final int uid = Binder.getCallingUid(); 632 if (uid != Process.SYSTEM_UID && uid != 0 633 && ActivityManager.checkComponentPermission( 634 android.Manifest.permission.MANAGE_USERS, 635 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 636 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 637 } 638 } 639 640 private static void checkSystemOrRoot(String message) { 641 final int uid = Binder.getCallingUid(); 642 if (uid != Process.SYSTEM_UID && uid != 0) { 643 throw new SecurityException("Only system may call: " + message); 644 } 645 } 646 647 private void writeBitmapLocked(UserInfo info, Bitmap bitmap) { 648 try { 649 File dir = new File(mUsersDir, Integer.toString(info.id)); 650 File file = new File(dir, USER_PHOTO_FILENAME); 651 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 652 if (!dir.exists()) { 653 dir.mkdir(); 654 FileUtils.setPermissions( 655 dir.getPath(), 656 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 657 -1, -1); 658 } 659 FileOutputStream os; 660 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 661 && tmp.renameTo(file)) { 662 info.iconPath = file.getAbsolutePath(); 663 } 664 try { 665 os.close(); 666 } catch (IOException ioe) { 667 // What the ... ! 668 } 669 tmp.delete(); 670 } catch (FileNotFoundException e) { 671 Slog.w(LOG_TAG, "Error setting photo for user ", e); 672 } 673 } 674 675 /** 676 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 677 * cache it elsewhere. 678 * @return the array of user ids. 679 */ 680 public int[] getUserIds() { 681 synchronized (mPackagesLock) { 682 return mUserIds; 683 } 684 } 685 686 int[] getUserIdsLPr() { 687 return mUserIds; 688 } 689 690 private void readUserListLocked() { 691 if (!mUserListFile.exists()) { 692 fallbackToSingleUserLocked(); 693 return; 694 } 695 FileInputStream fis = null; 696 AtomicFile userListFile = new AtomicFile(mUserListFile); 697 try { 698 fis = userListFile.openRead(); 699 XmlPullParser parser = Xml.newPullParser(); 700 parser.setInput(fis, StandardCharsets.UTF_8.name()); 701 int type; 702 while ((type = parser.next()) != XmlPullParser.START_TAG 703 && type != XmlPullParser.END_DOCUMENT) { 704 ; 705 } 706 707 if (type != XmlPullParser.START_TAG) { 708 Slog.e(LOG_TAG, "Unable to read user list"); 709 fallbackToSingleUserLocked(); 710 return; 711 } 712 713 mNextSerialNumber = -1; 714 if (parser.getName().equals(TAG_USERS)) { 715 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 716 if (lastSerialNumber != null) { 717 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 718 } 719 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 720 if (versionNumber != null) { 721 mUserVersion = Integer.parseInt(versionNumber); 722 } 723 } 724 725 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 726 if (type == XmlPullParser.START_TAG) { 727 final String name = parser.getName(); 728 if (name.equals(TAG_USER)) { 729 String id = parser.getAttributeValue(null, ATTR_ID); 730 UserInfo user = readUserLocked(Integer.parseInt(id)); 731 732 if (user != null) { 733 mUsers.put(user.id, user); 734 if (mNextSerialNumber < 0 || mNextSerialNumber <= user.id) { 735 mNextSerialNumber = user.id + 1; 736 } 737 } 738 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 739 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 740 && type != XmlPullParser.END_TAG) { 741 if (type == XmlPullParser.START_TAG) { 742 if (parser.getName().equals(TAG_RESTRICTIONS)) { 743 readRestrictionsLocked(parser, mGuestRestrictions); 744 } 745 break; 746 } 747 } 748 } 749 } 750 } 751 updateUserIdsLocked(); 752 upgradeIfNecessaryLocked(); 753 } catch (IOException ioe) { 754 fallbackToSingleUserLocked(); 755 } catch (XmlPullParserException pe) { 756 fallbackToSingleUserLocked(); 757 } finally { 758 if (fis != null) { 759 try { 760 fis.close(); 761 } catch (IOException e) { 762 } 763 } 764 } 765 } 766 767 /** 768 * Upgrade steps between versions, either for fixing bugs or changing the data format. 769 */ 770 private void upgradeIfNecessaryLocked() { 771 int userVersion = mUserVersion; 772 if (userVersion < 1) { 773 // Assign a proper name for the owner, if not initialized correctly before 774 UserInfo user = mUsers.get(UserHandle.USER_OWNER); 775 if ("Primary".equals(user.name)) { 776 user.name = mContext.getResources().getString(com.android.internal.R.string.owner_name); 777 scheduleWriteUserLocked(user); 778 } 779 userVersion = 1; 780 } 781 782 if (userVersion < 2) { 783 // Owner should be marked as initialized 784 UserInfo user = mUsers.get(UserHandle.USER_OWNER); 785 if ((user.flags & UserInfo.FLAG_INITIALIZED) == 0) { 786 user.flags |= UserInfo.FLAG_INITIALIZED; 787 scheduleWriteUserLocked(user); 788 } 789 userVersion = 2; 790 } 791 792 793 if (userVersion < 4) { 794 userVersion = 4; 795 } 796 797 if (userVersion < 5) { 798 initDefaultGuestRestrictions(); 799 userVersion = 5; 800 } 801 802 if (userVersion < USER_VERSION) { 803 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 804 + USER_VERSION); 805 } else { 806 mUserVersion = userVersion; 807 writeUserListLocked(); 808 } 809 } 810 811 private void fallbackToSingleUserLocked() { 812 // Create the primary user 813 UserInfo primary = new UserInfo(UserHandle.USER_OWNER, 814 mContext.getResources().getString(com.android.internal.R.string.owner_name), null, 815 UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY | UserInfo.FLAG_INITIALIZED); 816 mUsers.put(0, primary); 817 mNextSerialNumber = MIN_USER_ID; 818 mUserVersion = USER_VERSION; 819 820 Bundle restrictions = new Bundle(); 821 mUserRestrictions.append(UserHandle.USER_OWNER, restrictions); 822 823 updateUserIdsLocked(); 824 initDefaultGuestRestrictions(); 825 826 writeUserListLocked(); 827 writeUserLocked(primary); 828 } 829 830 private void scheduleWriteUserLocked(UserInfo userInfo) { 831 if (!mHandler.hasMessages(WRITE_USER_MSG, userInfo)) { 832 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, userInfo); 833 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 834 } 835 } 836 837 /* 838 * Writes the user file in this format: 839 * 840 * <user flags="20039023" id="0"> 841 * <name>Primary</name> 842 * </user> 843 */ 844 private void writeUserLocked(UserInfo userInfo) { 845 FileOutputStream fos = null; 846 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userInfo.id + XML_SUFFIX)); 847 try { 848 fos = userFile.startWrite(); 849 final BufferedOutputStream bos = new BufferedOutputStream(fos); 850 851 // XmlSerializer serializer = XmlUtils.serializerInstance(); 852 final XmlSerializer serializer = new FastXmlSerializer(); 853 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 854 serializer.startDocument(null, true); 855 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 856 857 serializer.startTag(null, TAG_USER); 858 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 859 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 860 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 861 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 862 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 863 Long.toString(userInfo.lastLoggedInTime)); 864 if (userInfo.iconPath != null) { 865 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 866 } 867 if (userInfo.partial) { 868 serializer.attribute(null, ATTR_PARTIAL, "true"); 869 } 870 if (userInfo.guestToRemove) { 871 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 872 } 873 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 874 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 875 Integer.toString(userInfo.profileGroupId)); 876 } 877 878 serializer.startTag(null, TAG_NAME); 879 serializer.text(userInfo.name); 880 serializer.endTag(null, TAG_NAME); 881 Bundle restrictions = mUserRestrictions.get(userInfo.id); 882 if (restrictions != null) { 883 writeRestrictionsLocked(serializer, restrictions); 884 } 885 serializer.endTag(null, TAG_USER); 886 887 serializer.endDocument(); 888 userFile.finishWrite(fos); 889 } catch (Exception ioe) { 890 Slog.e(LOG_TAG, "Error writing user info " + userInfo.id + "\n" + ioe); 891 userFile.failWrite(fos); 892 } 893 } 894 895 /* 896 * Writes the user list file in this format: 897 * 898 * <users nextSerialNumber="3"> 899 * <user id="0"></user> 900 * <user id="2"></user> 901 * </users> 902 */ 903 private void writeUserListLocked() { 904 FileOutputStream fos = null; 905 AtomicFile userListFile = new AtomicFile(mUserListFile); 906 try { 907 fos = userListFile.startWrite(); 908 final BufferedOutputStream bos = new BufferedOutputStream(fos); 909 910 // XmlSerializer serializer = XmlUtils.serializerInstance(); 911 final XmlSerializer serializer = new FastXmlSerializer(); 912 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 913 serializer.startDocument(null, true); 914 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 915 916 serializer.startTag(null, TAG_USERS); 917 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 918 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 919 920 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 921 writeRestrictionsLocked(serializer, mGuestRestrictions); 922 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 923 for (int i = 0; i < mUsers.size(); i++) { 924 UserInfo user = mUsers.valueAt(i); 925 serializer.startTag(null, TAG_USER); 926 serializer.attribute(null, ATTR_ID, Integer.toString(user.id)); 927 serializer.endTag(null, TAG_USER); 928 } 929 930 serializer.endTag(null, TAG_USERS); 931 932 serializer.endDocument(); 933 userListFile.finishWrite(fos); 934 } catch (Exception e) { 935 userListFile.failWrite(fos); 936 Slog.e(LOG_TAG, "Error writing user list"); 937 } 938 } 939 940 private void writeRestrictionsLocked(XmlSerializer serializer, Bundle restrictions) 941 throws IOException { 942 serializer.startTag(null, TAG_RESTRICTIONS); 943 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_WIFI); 944 writeBoolean(serializer, restrictions, UserManager.DISALLOW_MODIFY_ACCOUNTS); 945 writeBoolean(serializer, restrictions, UserManager.DISALLOW_INSTALL_APPS); 946 writeBoolean(serializer, restrictions, UserManager.DISALLOW_UNINSTALL_APPS); 947 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SHARE_LOCATION); 948 writeBoolean(serializer, restrictions, 949 UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES); 950 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_BLUETOOTH); 951 writeBoolean(serializer, restrictions, UserManager.DISALLOW_USB_FILE_TRANSFER); 952 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_CREDENTIALS); 953 writeBoolean(serializer, restrictions, UserManager.DISALLOW_REMOVE_USER); 954 writeBoolean(serializer, restrictions, UserManager.DISALLOW_DEBUGGING_FEATURES); 955 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_VPN); 956 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_TETHERING); 957 writeBoolean(serializer, restrictions, UserManager.DISALLOW_NETWORK_RESET); 958 writeBoolean(serializer, restrictions, UserManager.DISALLOW_FACTORY_RESET); 959 writeBoolean(serializer, restrictions, UserManager.DISALLOW_ADD_USER); 960 writeBoolean(serializer, restrictions, UserManager.ENSURE_VERIFY_APPS); 961 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_CELL_BROADCASTS); 962 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS); 963 writeBoolean(serializer, restrictions, UserManager.DISALLOW_APPS_CONTROL); 964 writeBoolean(serializer, restrictions, UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA); 965 writeBoolean(serializer, restrictions, UserManager.DISALLOW_UNMUTE_MICROPHONE); 966 writeBoolean(serializer, restrictions, UserManager.DISALLOW_ADJUST_VOLUME); 967 writeBoolean(serializer, restrictions, UserManager.DISALLOW_OUTGOING_CALLS); 968 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SMS); 969 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CREATE_WINDOWS); 970 writeBoolean(serializer, restrictions, UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE); 971 writeBoolean(serializer, restrictions, UserManager.DISALLOW_OUTGOING_BEAM); 972 writeBoolean(serializer, restrictions, UserManager.DISALLOW_WALLPAPER); 973 writeBoolean(serializer, restrictions, UserManager.DISALLOW_SAFE_BOOT); 974 serializer.endTag(null, TAG_RESTRICTIONS); 975 } 976 977 private UserInfo readUserLocked(int id) { 978 int flags = 0; 979 int serialNumber = id; 980 String name = null; 981 String iconPath = null; 982 long creationTime = 0L; 983 long lastLoggedInTime = 0L; 984 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 985 boolean partial = false; 986 boolean guestToRemove = false; 987 Bundle restrictions = new Bundle(); 988 989 FileInputStream fis = null; 990 try { 991 AtomicFile userFile = 992 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 993 fis = userFile.openRead(); 994 XmlPullParser parser = Xml.newPullParser(); 995 parser.setInput(fis, StandardCharsets.UTF_8.name()); 996 int type; 997 while ((type = parser.next()) != XmlPullParser.START_TAG 998 && type != XmlPullParser.END_DOCUMENT) { 999 ; 1000 } 1001 1002 if (type != XmlPullParser.START_TAG) { 1003 Slog.e(LOG_TAG, "Unable to read user " + id); 1004 return null; 1005 } 1006 1007 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 1008 int storedId = readIntAttribute(parser, ATTR_ID, -1); 1009 if (storedId != id) { 1010 Slog.e(LOG_TAG, "User id does not match the file name"); 1011 return null; 1012 } 1013 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 1014 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 1015 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 1016 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 1017 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 1018 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 1019 UserInfo.NO_PROFILE_GROUP_ID); 1020 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 1021 if ("true".equals(valueString)) { 1022 partial = true; 1023 } 1024 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 1025 if ("true".equals(valueString)) { 1026 guestToRemove = true; 1027 } 1028 1029 int outerDepth = parser.getDepth(); 1030 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1031 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1032 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1033 continue; 1034 } 1035 String tag = parser.getName(); 1036 if (TAG_NAME.equals(tag)) { 1037 type = parser.next(); 1038 if (type == XmlPullParser.TEXT) { 1039 name = parser.getText(); 1040 } 1041 } else if (TAG_RESTRICTIONS.equals(tag)) { 1042 readRestrictionsLocked(parser, restrictions); 1043 } 1044 } 1045 } 1046 1047 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 1048 userInfo.serialNumber = serialNumber; 1049 userInfo.creationTime = creationTime; 1050 userInfo.lastLoggedInTime = lastLoggedInTime; 1051 userInfo.partial = partial; 1052 userInfo.guestToRemove = guestToRemove; 1053 userInfo.profileGroupId = profileGroupId; 1054 mUserRestrictions.append(id, restrictions); 1055 return userInfo; 1056 1057 } catch (IOException ioe) { 1058 } catch (XmlPullParserException pe) { 1059 } finally { 1060 if (fis != null) { 1061 try { 1062 fis.close(); 1063 } catch (IOException e) { 1064 } 1065 } 1066 } 1067 return null; 1068 } 1069 1070 private void readRestrictionsLocked(XmlPullParser parser, Bundle restrictions) 1071 throws IOException { 1072 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_WIFI); 1073 readBoolean(parser, restrictions, UserManager.DISALLOW_MODIFY_ACCOUNTS); 1074 readBoolean(parser, restrictions, UserManager.DISALLOW_INSTALL_APPS); 1075 readBoolean(parser, restrictions, UserManager.DISALLOW_UNINSTALL_APPS); 1076 readBoolean(parser, restrictions, UserManager.DISALLOW_SHARE_LOCATION); 1077 readBoolean(parser, restrictions, 1078 UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES); 1079 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_BLUETOOTH); 1080 readBoolean(parser, restrictions, UserManager.DISALLOW_USB_FILE_TRANSFER); 1081 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_CREDENTIALS); 1082 readBoolean(parser, restrictions, UserManager.DISALLOW_REMOVE_USER); 1083 readBoolean(parser, restrictions, UserManager.DISALLOW_DEBUGGING_FEATURES); 1084 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_VPN); 1085 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_TETHERING); 1086 readBoolean(parser, restrictions, UserManager.DISALLOW_NETWORK_RESET); 1087 readBoolean(parser, restrictions, UserManager.DISALLOW_FACTORY_RESET); 1088 readBoolean(parser, restrictions, UserManager.DISALLOW_ADD_USER); 1089 readBoolean(parser, restrictions, UserManager.ENSURE_VERIFY_APPS); 1090 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_CELL_BROADCASTS); 1091 readBoolean(parser, restrictions, UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS); 1092 readBoolean(parser, restrictions, UserManager.DISALLOW_APPS_CONTROL); 1093 readBoolean(parser, restrictions, 1094 UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA); 1095 readBoolean(parser, restrictions, UserManager.DISALLOW_UNMUTE_MICROPHONE); 1096 readBoolean(parser, restrictions, UserManager.DISALLOW_ADJUST_VOLUME); 1097 readBoolean(parser, restrictions, UserManager.DISALLOW_OUTGOING_CALLS); 1098 readBoolean(parser, restrictions, UserManager.DISALLOW_SMS); 1099 readBoolean(parser, restrictions, UserManager.DISALLOW_CREATE_WINDOWS); 1100 readBoolean(parser, restrictions, UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE); 1101 readBoolean(parser, restrictions, UserManager.DISALLOW_OUTGOING_BEAM); 1102 readBoolean(parser, restrictions, UserManager.DISALLOW_WALLPAPER); 1103 readBoolean(parser, restrictions, UserManager.DISALLOW_SAFE_BOOT); 1104 } 1105 1106 private void readBoolean(XmlPullParser parser, Bundle restrictions, 1107 String restrictionKey) { 1108 String value = parser.getAttributeValue(null, restrictionKey); 1109 if (value != null) { 1110 restrictions.putBoolean(restrictionKey, Boolean.parseBoolean(value)); 1111 } 1112 } 1113 1114 private void writeBoolean(XmlSerializer xml, Bundle restrictions, String restrictionKey) 1115 throws IOException { 1116 if (restrictions.containsKey(restrictionKey)) { 1117 xml.attribute(null, restrictionKey, 1118 Boolean.toString(restrictions.getBoolean(restrictionKey))); 1119 } 1120 } 1121 1122 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1123 String valueString = parser.getAttributeValue(null, attr); 1124 if (valueString == null) return defaultValue; 1125 try { 1126 return Integer.parseInt(valueString); 1127 } catch (NumberFormatException nfe) { 1128 return defaultValue; 1129 } 1130 } 1131 1132 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1133 String valueString = parser.getAttributeValue(null, attr); 1134 if (valueString == null) return defaultValue; 1135 try { 1136 return Long.parseLong(valueString); 1137 } catch (NumberFormatException nfe) { 1138 return defaultValue; 1139 } 1140 } 1141 1142 private boolean isPackageInstalled(String pkg, int userId) { 1143 final ApplicationInfo info = mPm.getApplicationInfo(pkg, 1144 PackageManager.GET_UNINSTALLED_PACKAGES, 1145 userId); 1146 if (info == null || (info.flags&ApplicationInfo.FLAG_INSTALLED) == 0) { 1147 return false; 1148 } 1149 return true; 1150 } 1151 1152 /** 1153 * Removes all the restrictions files (res_<packagename>) for a given user. 1154 * Does not do any permissions checking. 1155 */ 1156 private void cleanAppRestrictions(int userId) { 1157 synchronized (mPackagesLock) { 1158 File dir = Environment.getUserSystemDirectory(userId); 1159 String[] files = dir.list(); 1160 if (files == null) return; 1161 for (String fileName : files) { 1162 if (fileName.startsWith(RESTRICTIONS_FILE_PREFIX)) { 1163 File resFile = new File(dir, fileName); 1164 if (resFile.exists()) { 1165 resFile.delete(); 1166 } 1167 } 1168 } 1169 } 1170 } 1171 1172 /** 1173 * Removes the app restrictions file for a specific package and user id, if it exists. 1174 */ 1175 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1176 synchronized (mPackagesLock) { 1177 File dir = Environment.getUserSystemDirectory(userId); 1178 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1179 if (resFile.exists()) { 1180 resFile.delete(); 1181 } 1182 } 1183 } 1184 1185 @Override 1186 public UserInfo createProfileForUser(String name, int flags, int userId) { 1187 checkManageUsersPermission("Only the system can create users"); 1188 if (userId != UserHandle.USER_OWNER) { 1189 Slog.w(LOG_TAG, "Only user owner can have profiles"); 1190 return null; 1191 } 1192 return createUserInternal(name, flags, userId); 1193 } 1194 1195 @Override 1196 public UserInfo createUser(String name, int flags) { 1197 checkManageUsersPermission("Only the system can create users"); 1198 return createUserInternal(name, flags, UserHandle.USER_NULL); 1199 } 1200 1201 private UserInfo createUserInternal(String name, int flags, int parentId) { 1202 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1203 UserManager.DISALLOW_ADD_USER, false)) { 1204 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1205 return null; 1206 } 1207 if (ActivityManager.isLowRamDeviceStatic()) { 1208 return null; 1209 } 1210 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1211 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 1212 final long ident = Binder.clearCallingIdentity(); 1213 UserInfo userInfo = null; 1214 try { 1215 synchronized (mInstallLock) { 1216 synchronized (mPackagesLock) { 1217 UserInfo parent = null; 1218 if (parentId != UserHandle.USER_NULL) { 1219 parent = getUserInfoLocked(parentId); 1220 if (parent == null) return null; 1221 } 1222 if (isManagedProfile && !canAddMoreManagedProfiles()) { 1223 return null; 1224 } 1225 if (!isGuest && !isManagedProfile && isUserLimitReachedLocked()) { 1226 // If we're not adding a guest user or a managed profile and the limit has 1227 // been reached, cannot add a user. 1228 return null; 1229 } 1230 // If we're adding a guest and there already exists one, bail. 1231 if (isGuest && findCurrentGuestUserLocked() != null) { 1232 return null; 1233 } 1234 int userId = getNextAvailableIdLocked(); 1235 userInfo = new UserInfo(userId, name, null, flags); 1236 File userPath = new File(mBaseUserPath, Integer.toString(userId)); 1237 userInfo.serialNumber = mNextSerialNumber++; 1238 long now = System.currentTimeMillis(); 1239 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1240 userInfo.partial = true; 1241 Environment.getUserSystemDirectory(userInfo.id).mkdirs(); 1242 mUsers.put(userId, userInfo); 1243 writeUserListLocked(); 1244 if (parent != null) { 1245 if (parent.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1246 parent.profileGroupId = parent.id; 1247 scheduleWriteUserLocked(parent); 1248 } 1249 userInfo.profileGroupId = parent.profileGroupId; 1250 } 1251 mPm.createNewUserLILPw(userId, userPath); 1252 userInfo.partial = false; 1253 scheduleWriteUserLocked(userInfo); 1254 updateUserIdsLocked(); 1255 Bundle restrictions = new Bundle(); 1256 mUserRestrictions.append(userId, restrictions); 1257 mPm.newUserCreatedLILPw(userId); 1258 } 1259 } 1260 if (userInfo != null) { 1261 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 1262 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userInfo.id); 1263 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 1264 android.Manifest.permission.MANAGE_USERS); 1265 } 1266 } finally { 1267 Binder.restoreCallingIdentity(ident); 1268 } 1269 return userInfo; 1270 } 1271 1272 private int numberOfUsersOfTypeLocked(int flags, boolean excludeDying) { 1273 int count = 0; 1274 for (int i = mUsers.size() - 1; i >= 0; i--) { 1275 UserInfo user = mUsers.valueAt(i); 1276 if (!excludeDying || !mRemovingUserIds.get(user.id)) { 1277 if ((user.flags & flags) != 0) { 1278 count++; 1279 } 1280 } 1281 } 1282 return count; 1283 } 1284 1285 /** 1286 * Find the current guest user. If the Guest user is partial, 1287 * then do not include it in the results as it is about to die. 1288 * This is different than {@link #numberOfUsersOfTypeLocked(int, boolean)} due to 1289 * the special handling of Guests being removed. 1290 */ 1291 private UserInfo findCurrentGuestUserLocked() { 1292 final int size = mUsers.size(); 1293 for (int i = 0; i < size; i++) { 1294 final UserInfo user = mUsers.valueAt(i); 1295 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 1296 return user; 1297 } 1298 } 1299 return null; 1300 } 1301 1302 /** 1303 * Mark this guest user for deletion to allow us to create another guest 1304 * and switch to that user before actually removing this guest. 1305 * @param userHandle the userid of the current guest 1306 * @return whether the user could be marked for deletion 1307 */ 1308 public boolean markGuestForDeletion(int userHandle) { 1309 checkManageUsersPermission("Only the system can remove users"); 1310 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1311 UserManager.DISALLOW_REMOVE_USER, false)) { 1312 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1313 return false; 1314 } 1315 1316 long ident = Binder.clearCallingIdentity(); 1317 try { 1318 final UserInfo user; 1319 synchronized (mPackagesLock) { 1320 user = mUsers.get(userHandle); 1321 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1322 return false; 1323 } 1324 if (!user.isGuest()) { 1325 return false; 1326 } 1327 // We set this to a guest user that is to be removed. This is a temporary state 1328 // where we are allowed to add new Guest users, even if this one is still not 1329 // removed. This user will still show up in getUserInfo() calls. 1330 // If we don't get around to removing this Guest user, it will be purged on next 1331 // startup. 1332 user.guestToRemove = true; 1333 // Mark it as disabled, so that it isn't returned any more when 1334 // profiles are queried. 1335 user.flags |= UserInfo.FLAG_DISABLED; 1336 writeUserLocked(user); 1337 } 1338 } finally { 1339 Binder.restoreCallingIdentity(ident); 1340 } 1341 return true; 1342 } 1343 1344 /** 1345 * Removes a user and all data directories created for that user. This method should be called 1346 * after the user's processes have been terminated. 1347 * @param userHandle the user's id 1348 */ 1349 public boolean removeUser(int userHandle) { 1350 checkManageUsersPermission("Only the system can remove users"); 1351 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1352 UserManager.DISALLOW_REMOVE_USER, false)) { 1353 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1354 return false; 1355 } 1356 1357 long ident = Binder.clearCallingIdentity(); 1358 try { 1359 final UserInfo user; 1360 synchronized (mPackagesLock) { 1361 user = mUsers.get(userHandle); 1362 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1363 return false; 1364 } 1365 1366 // We remember deleted user IDs to prevent them from being 1367 // reused during the current boot; they can still be reused 1368 // after a reboot. 1369 mRemovingUserIds.put(userHandle, true); 1370 1371 try { 1372 mAppOpsService.removeUser(userHandle); 1373 } catch (RemoteException e) { 1374 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 1375 } 1376 // Set this to a partially created user, so that the user will be purged 1377 // on next startup, in case the runtime stops now before stopping and 1378 // removing the user completely. 1379 user.partial = true; 1380 // Mark it as disabled, so that it isn't returned any more when 1381 // profiles are queried. 1382 user.flags |= UserInfo.FLAG_DISABLED; 1383 writeUserLocked(user); 1384 } 1385 1386 if (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 1387 && user.isManagedProfile()) { 1388 // Send broadcast to notify system that the user removed was a 1389 // managed user. 1390 sendProfileRemovedBroadcast(user.profileGroupId, user.id); 1391 } 1392 1393 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 1394 int res; 1395 try { 1396 res = ActivityManagerNative.getDefault().stopUser(userHandle, 1397 new IStopUserCallback.Stub() { 1398 @Override 1399 public void userStopped(int userId) { 1400 finishRemoveUser(userId); 1401 } 1402 @Override 1403 public void userStopAborted(int userId) { 1404 } 1405 }); 1406 } catch (RemoteException e) { 1407 return false; 1408 } 1409 return res == ActivityManager.USER_OP_SUCCESS; 1410 } finally { 1411 Binder.restoreCallingIdentity(ident); 1412 } 1413 } 1414 1415 void finishRemoveUser(final int userHandle) { 1416 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 1417 // Let other services shutdown any activity and clean up their state before completely 1418 // wiping the user's system directory and removing from the user list 1419 long ident = Binder.clearCallingIdentity(); 1420 try { 1421 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 1422 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 1423 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 1424 android.Manifest.permission.MANAGE_USERS, 1425 1426 new BroadcastReceiver() { 1427 @Override 1428 public void onReceive(Context context, Intent intent) { 1429 if (DBG) { 1430 Slog.i(LOG_TAG, 1431 "USER_REMOVED broadcast sent, cleaning up user data " 1432 + userHandle); 1433 } 1434 new Thread() { 1435 public void run() { 1436 synchronized (mInstallLock) { 1437 synchronized (mPackagesLock) { 1438 removeUserStateLocked(userHandle); 1439 } 1440 } 1441 } 1442 }.start(); 1443 } 1444 }, 1445 1446 null, Activity.RESULT_OK, null, null); 1447 } finally { 1448 Binder.restoreCallingIdentity(ident); 1449 } 1450 } 1451 1452 private void removeUserStateLocked(final int userHandle) { 1453 // Cleanup package manager settings 1454 mPm.cleanUpUserLILPw(this, userHandle); 1455 1456 // Remove this user from the list 1457 mUsers.remove(userHandle); 1458 // Remove user file 1459 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 1460 userFile.delete(); 1461 // Update the user list 1462 writeUserListLocked(); 1463 updateUserIdsLocked(); 1464 removeDirectoryRecursive(Environment.getUserSystemDirectory(userHandle)); 1465 } 1466 1467 private void removeDirectoryRecursive(File parent) { 1468 if (parent.isDirectory()) { 1469 String[] files = parent.list(); 1470 for (String filename : files) { 1471 File child = new File(parent, filename); 1472 removeDirectoryRecursive(child); 1473 } 1474 } 1475 parent.delete(); 1476 } 1477 1478 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 1479 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 1480 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 1481 Intent.FLAG_RECEIVER_FOREGROUND); 1482 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 1483 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 1484 } 1485 1486 @Override 1487 public Bundle getApplicationRestrictions(String packageName) { 1488 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 1489 } 1490 1491 @Override 1492 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 1493 if (UserHandle.getCallingUserId() != userId 1494 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 1495 checkManageUsersPermission("Only system can get restrictions for other users/apps"); 1496 } 1497 synchronized (mPackagesLock) { 1498 // Read the restrictions from XML 1499 return readApplicationRestrictionsLocked(packageName, userId); 1500 } 1501 } 1502 1503 @Override 1504 public void setApplicationRestrictions(String packageName, Bundle restrictions, 1505 int userId) { 1506 if (UserHandle.getCallingUserId() != userId 1507 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 1508 checkManageUsersPermission("Only system can set restrictions for other users/apps"); 1509 } 1510 synchronized (mPackagesLock) { 1511 if (restrictions == null || restrictions.isEmpty()) { 1512 cleanAppRestrictionsForPackage(packageName, userId); 1513 } else { 1514 // Write the restrictions to XML 1515 writeApplicationRestrictionsLocked(packageName, restrictions, userId); 1516 } 1517 } 1518 1519 if (isPackageInstalled(packageName, userId)) { 1520 // Notify package of changes via an intent - only sent to explicitly registered receivers. 1521 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 1522 changeIntent.setPackage(packageName); 1523 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1524 mContext.sendBroadcastAsUser(changeIntent, new UserHandle(userId)); 1525 } 1526 } 1527 1528 @Override 1529 public void removeRestrictions() { 1530 checkManageUsersPermission("Only system can remove restrictions"); 1531 final int userHandle = UserHandle.getCallingUserId(); 1532 removeRestrictionsForUser(userHandle, true); 1533 } 1534 1535 private void removeRestrictionsForUser(final int userHandle, boolean unhideApps) { 1536 synchronized (mPackagesLock) { 1537 // Remove all user restrictions 1538 setUserRestrictions(new Bundle(), userHandle); 1539 // Remove any app restrictions 1540 cleanAppRestrictions(userHandle); 1541 } 1542 if (unhideApps) { 1543 unhideAllInstalledAppsForUser(userHandle); 1544 } 1545 } 1546 1547 private void unhideAllInstalledAppsForUser(final int userHandle) { 1548 mHandler.post(new Runnable() { 1549 @Override 1550 public void run() { 1551 List<ApplicationInfo> apps = 1552 mPm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES, 1553 userHandle).getList(); 1554 final long ident = Binder.clearCallingIdentity(); 1555 try { 1556 for (ApplicationInfo appInfo : apps) { 1557 if ((appInfo.flags & ApplicationInfo.FLAG_INSTALLED) != 0 1558 && (appInfo.privateFlags & ApplicationInfo.PRIVATE_FLAG_HIDDEN) 1559 != 0) { 1560 mPm.setApplicationHiddenSettingAsUser(appInfo.packageName, false, 1561 userHandle); 1562 } 1563 } 1564 } finally { 1565 Binder.restoreCallingIdentity(ident); 1566 } 1567 } 1568 }); 1569 } 1570 private int getUidForPackage(String packageName) { 1571 long ident = Binder.clearCallingIdentity(); 1572 try { 1573 return mContext.getPackageManager().getApplicationInfo(packageName, 1574 PackageManager.GET_UNINSTALLED_PACKAGES).uid; 1575 } catch (NameNotFoundException nnfe) { 1576 return -1; 1577 } finally { 1578 Binder.restoreCallingIdentity(ident); 1579 } 1580 } 1581 1582 private Bundle readApplicationRestrictionsLocked(String packageName, 1583 int userId) { 1584 AtomicFile restrictionsFile = 1585 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 1586 packageToRestrictionsFileName(packageName))); 1587 return readApplicationRestrictionsLocked(restrictionsFile); 1588 } 1589 1590 @VisibleForTesting 1591 static Bundle readApplicationRestrictionsLocked(AtomicFile restrictionsFile) { 1592 final Bundle restrictions = new Bundle(); 1593 final ArrayList<String> values = new ArrayList<>(); 1594 if (!restrictionsFile.getBaseFile().exists()) { 1595 return restrictions; 1596 } 1597 1598 FileInputStream fis = null; 1599 try { 1600 fis = restrictionsFile.openRead(); 1601 XmlPullParser parser = Xml.newPullParser(); 1602 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1603 XmlUtils.nextElement(parser); 1604 if (parser.getEventType() != XmlPullParser.START_TAG) { 1605 Slog.e(LOG_TAG, "Unable to read restrictions file " 1606 + restrictionsFile.getBaseFile()); 1607 return restrictions; 1608 } 1609 while (parser.next() != XmlPullParser.END_DOCUMENT) { 1610 readEntry(restrictions, values, parser); 1611 } 1612 } catch (IOException|XmlPullParserException e) { 1613 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 1614 } finally { 1615 IoUtils.closeQuietly(fis); 1616 } 1617 return restrictions; 1618 } 1619 1620 private static void readEntry(Bundle restrictions, ArrayList<String> values, 1621 XmlPullParser parser) throws XmlPullParserException, IOException { 1622 int type = parser.getEventType(); 1623 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 1624 String key = parser.getAttributeValue(null, ATTR_KEY); 1625 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 1626 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 1627 if (multiple != null) { 1628 values.clear(); 1629 int count = Integer.parseInt(multiple); 1630 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1631 if (type == XmlPullParser.START_TAG 1632 && parser.getName().equals(TAG_VALUE)) { 1633 values.add(parser.nextText().trim()); 1634 count--; 1635 } 1636 } 1637 String [] valueStrings = new String[values.size()]; 1638 values.toArray(valueStrings); 1639 restrictions.putStringArray(key, valueStrings); 1640 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 1641 restrictions.putBundle(key, readBundleEntry(parser, values)); 1642 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 1643 final int outerDepth = parser.getDepth(); 1644 ArrayList<Bundle> bundleList = new ArrayList<>(); 1645 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 1646 Bundle childBundle = readBundleEntry(parser, values); 1647 bundleList.add(childBundle); 1648 } 1649 restrictions.putParcelableArray(key, 1650 bundleList.toArray(new Bundle[bundleList.size()])); 1651 } else { 1652 String value = parser.nextText().trim(); 1653 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 1654 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 1655 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 1656 restrictions.putInt(key, Integer.parseInt(value)); 1657 } else { 1658 restrictions.putString(key, value); 1659 } 1660 } 1661 } 1662 } 1663 1664 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 1665 throws IOException, XmlPullParserException { 1666 Bundle childBundle = new Bundle(); 1667 final int outerDepth = parser.getDepth(); 1668 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 1669 readEntry(childBundle, values, parser); 1670 } 1671 return childBundle; 1672 } 1673 1674 private void writeApplicationRestrictionsLocked(String packageName, 1675 Bundle restrictions, int userId) { 1676 AtomicFile restrictionsFile = new AtomicFile( 1677 new File(Environment.getUserSystemDirectory(userId), 1678 packageToRestrictionsFileName(packageName))); 1679 writeApplicationRestrictionsLocked(restrictions, restrictionsFile); 1680 } 1681 1682 @VisibleForTesting 1683 static void writeApplicationRestrictionsLocked(Bundle restrictions, 1684 AtomicFile restrictionsFile) { 1685 FileOutputStream fos = null; 1686 try { 1687 fos = restrictionsFile.startWrite(); 1688 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1689 1690 final XmlSerializer serializer = new FastXmlSerializer(); 1691 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1692 serializer.startDocument(null, true); 1693 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1694 1695 serializer.startTag(null, TAG_RESTRICTIONS); 1696 writeBundle(restrictions, serializer); 1697 serializer.endTag(null, TAG_RESTRICTIONS); 1698 1699 serializer.endDocument(); 1700 restrictionsFile.finishWrite(fos); 1701 } catch (Exception e) { 1702 restrictionsFile.failWrite(fos); 1703 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 1704 } 1705 } 1706 1707 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 1708 throws IOException { 1709 for (String key : restrictions.keySet()) { 1710 Object value = restrictions.get(key); 1711 serializer.startTag(null, TAG_ENTRY); 1712 serializer.attribute(null, ATTR_KEY, key); 1713 1714 if (value instanceof Boolean) { 1715 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 1716 serializer.text(value.toString()); 1717 } else if (value instanceof Integer) { 1718 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 1719 serializer.text(value.toString()); 1720 } else if (value == null || value instanceof String) { 1721 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 1722 serializer.text(value != null ? (String) value : ""); 1723 } else if (value instanceof Bundle) { 1724 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 1725 writeBundle((Bundle) value, serializer); 1726 } else if (value instanceof Parcelable[]) { 1727 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 1728 Parcelable[] array = (Parcelable[]) value; 1729 for (Parcelable parcelable : array) { 1730 if (!(parcelable instanceof Bundle)) { 1731 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 1732 } 1733 serializer.startTag(null, TAG_ENTRY); 1734 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 1735 writeBundle((Bundle) parcelable, serializer); 1736 serializer.endTag(null, TAG_ENTRY); 1737 } 1738 } else { 1739 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 1740 String[] values = (String[]) value; 1741 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 1742 for (String choice : values) { 1743 serializer.startTag(null, TAG_VALUE); 1744 serializer.text(choice != null ? choice : ""); 1745 serializer.endTag(null, TAG_VALUE); 1746 } 1747 } 1748 serializer.endTag(null, TAG_ENTRY); 1749 } 1750 } 1751 1752 @Override 1753 public int getUserSerialNumber(int userHandle) { 1754 synchronized (mPackagesLock) { 1755 if (!exists(userHandle)) return -1; 1756 return getUserInfoLocked(userHandle).serialNumber; 1757 } 1758 } 1759 1760 @Override 1761 public int getUserHandle(int userSerialNumber) { 1762 synchronized (mPackagesLock) { 1763 for (int userId : mUserIds) { 1764 UserInfo info = getUserInfoLocked(userId); 1765 if (info != null && info.serialNumber == userSerialNumber) return userId; 1766 } 1767 // Not found 1768 return -1; 1769 } 1770 } 1771 1772 @Override 1773 public long getUserCreationTime(int userHandle) { 1774 int callingUserId = UserHandle.getCallingUserId(); 1775 UserInfo userInfo = null; 1776 synchronized (mPackagesLock) { 1777 if (callingUserId == userHandle) { 1778 userInfo = getUserInfoLocked(userHandle); 1779 } else { 1780 UserInfo parent = getProfileParentLocked(userHandle); 1781 if (parent != null && parent.id == callingUserId) { 1782 userInfo = getUserInfoLocked(userHandle); 1783 } 1784 } 1785 } 1786 if (userInfo == null) { 1787 throw new SecurityException("userHandle can only be the calling user or a managed " 1788 + "profile associated with this user"); 1789 } 1790 return userInfo.creationTime; 1791 } 1792 1793 /** 1794 * Caches the list of user ids in an array, adjusting the array size when necessary. 1795 */ 1796 private void updateUserIdsLocked() { 1797 int num = 0; 1798 for (int i = 0; i < mUsers.size(); i++) { 1799 if (!mUsers.valueAt(i).partial) { 1800 num++; 1801 } 1802 } 1803 final int[] newUsers = new int[num]; 1804 int n = 0; 1805 for (int i = 0; i < mUsers.size(); i++) { 1806 if (!mUsers.valueAt(i).partial) { 1807 newUsers[n++] = mUsers.keyAt(i); 1808 } 1809 } 1810 mUserIds = newUsers; 1811 } 1812 1813 /** 1814 * Make a note of the last started time of a user and do some cleanup. 1815 * @param userId the user that was just foregrounded 1816 */ 1817 public void onUserForeground(int userId) { 1818 synchronized (mPackagesLock) { 1819 UserInfo user = mUsers.get(userId); 1820 long now = System.currentTimeMillis(); 1821 if (user == null || user.partial) { 1822 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 1823 return; 1824 } 1825 if (now > EPOCH_PLUS_30_YEARS) { 1826 user.lastLoggedInTime = now; 1827 scheduleWriteUserLocked(user); 1828 } 1829 } 1830 } 1831 1832 /** 1833 * Returns the next available user id, filling in any holes in the ids. 1834 * TODO: May not be a good idea to recycle ids, in case it results in confusion 1835 * for data and battery stats collection, or unexpected cross-talk. 1836 * @return 1837 */ 1838 private int getNextAvailableIdLocked() { 1839 synchronized (mPackagesLock) { 1840 int i = MIN_USER_ID; 1841 while (i < Integer.MAX_VALUE) { 1842 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 1843 break; 1844 } 1845 i++; 1846 } 1847 return i; 1848 } 1849 } 1850 1851 private String packageToRestrictionsFileName(String packageName) { 1852 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 1853 } 1854 1855 @Override 1856 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1857 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 1858 != PackageManager.PERMISSION_GRANTED) { 1859 pw.println("Permission Denial: can't dump UserManager from from pid=" 1860 + Binder.getCallingPid() 1861 + ", uid=" + Binder.getCallingUid() 1862 + " without permission " 1863 + android.Manifest.permission.DUMP); 1864 return; 1865 } 1866 1867 long now = System.currentTimeMillis(); 1868 StringBuilder sb = new StringBuilder(); 1869 synchronized (mPackagesLock) { 1870 pw.println("Users:"); 1871 for (int i = 0; i < mUsers.size(); i++) { 1872 UserInfo user = mUsers.valueAt(i); 1873 if (user == null) continue; 1874 pw.print(" "); pw.print(user); pw.print(" serialNo="); pw.print(user.serialNumber); 1875 if (mRemovingUserIds.get(mUsers.keyAt(i))) pw.print(" <removing> "); 1876 if (user.partial) pw.print(" <partial>"); 1877 pw.println(); 1878 pw.print(" Created: "); 1879 if (user.creationTime == 0) { 1880 pw.println("<unknown>"); 1881 } else { 1882 sb.setLength(0); 1883 TimeUtils.formatDuration(now - user.creationTime, sb); 1884 sb.append(" ago"); 1885 pw.println(sb); 1886 } 1887 pw.print(" Last logged in: "); 1888 if (user.lastLoggedInTime == 0) { 1889 pw.println("<unknown>"); 1890 } else { 1891 sb.setLength(0); 1892 TimeUtils.formatDuration(now - user.lastLoggedInTime, sb); 1893 sb.append(" ago"); 1894 pw.println(sb); 1895 } 1896 } 1897 } 1898 } 1899 1900 final class MainHandler extends Handler { 1901 1902 @Override 1903 public void handleMessage(Message msg) { 1904 switch (msg.what) { 1905 case WRITE_USER_MSG: 1906 removeMessages(WRITE_USER_MSG, msg.obj); 1907 synchronized (mPackagesLock) { 1908 int userId = ((UserInfo) msg.obj).id; 1909 UserInfo userInfo = mUsers.get(userId); 1910 if (userInfo != null) { 1911 writeUserLocked(userInfo); 1912 } 1913 } 1914 } 1915 } 1916 } 1917} 1918