UserManagerService.java revision 7cb54a34c44547b55200e4be15be397f6a363c55
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.content.Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS; 20import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK; 21 22import android.Manifest; 23import android.annotation.NonNull; 24import android.annotation.Nullable; 25import android.annotation.UserIdInt; 26import android.app.Activity; 27import android.app.ActivityManager; 28import android.app.ActivityManagerInternal; 29import android.app.ActivityManagerNative; 30import android.app.AppGlobals; 31import android.app.IActivityManager; 32import android.app.IStopUserCallback; 33import android.app.KeyguardManager; 34import android.app.PendingIntent; 35import android.content.BroadcastReceiver; 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.IntentFilter; 40import android.content.IntentSender; 41import android.content.pm.IPackageManager; 42import android.content.pm.PackageManager; 43import android.content.pm.PackageManager.NameNotFoundException; 44import android.content.pm.UserInfo; 45import android.content.res.Resources; 46import android.graphics.Bitmap; 47import android.os.Binder; 48import android.os.Build; 49import android.os.Bundle; 50import android.os.Debug; 51import android.os.Environment; 52import android.os.FileUtils; 53import android.os.Handler; 54import android.os.IBinder; 55import android.os.IUserManager; 56import android.os.Message; 57import android.os.ParcelFileDescriptor; 58import android.os.Parcelable; 59import android.os.PersistableBundle; 60import android.os.Process; 61import android.os.RemoteException; 62import android.os.ResultReceiver; 63import android.os.SELinux; 64import android.os.ServiceManager; 65import android.os.ShellCallback; 66import android.os.ShellCommand; 67import android.os.UserHandle; 68import android.os.UserManager; 69import android.os.UserManagerInternal; 70import android.os.UserManagerInternal.UserRestrictionsListener; 71import android.os.storage.StorageManager; 72import android.security.GateKeeper; 73import android.service.gatekeeper.IGateKeeperService; 74import android.system.ErrnoException; 75import android.system.Os; 76import android.system.OsConstants; 77import android.text.TextUtils; 78import android.util.AtomicFile; 79import android.util.IntArray; 80import android.util.Log; 81import android.util.Slog; 82import android.util.SparseArray; 83import android.util.SparseBooleanArray; 84import android.util.SparseIntArray; 85import android.util.TimeUtils; 86import android.util.Xml; 87 88import com.android.internal.annotations.GuardedBy; 89import com.android.internal.annotations.VisibleForTesting; 90import com.android.internal.app.IAppOpsService; 91import com.android.internal.logging.MetricsLogger; 92import com.android.internal.util.FastXmlSerializer; 93import com.android.internal.util.Preconditions; 94import com.android.internal.util.XmlUtils; 95import com.android.internal.widget.LockPatternUtils; 96import com.android.server.LocalServices; 97import com.android.server.SystemService; 98import com.android.server.am.UserState; 99import com.android.server.storage.DeviceStorageMonitorInternal; 100import libcore.io.IoUtils; 101import libcore.util.Objects; 102 103import org.xmlpull.v1.XmlPullParser; 104import org.xmlpull.v1.XmlPullParserException; 105import org.xmlpull.v1.XmlSerializer; 106 107import java.io.BufferedOutputStream; 108import java.io.File; 109import java.io.FileDescriptor; 110import java.io.FileInputStream; 111import java.io.FileNotFoundException; 112import java.io.FileOutputStream; 113import java.io.IOException; 114import java.io.PrintWriter; 115import java.nio.charset.StandardCharsets; 116import java.util.ArrayList; 117import java.util.LinkedList; 118import java.util.List; 119 120/** 121 * Service for {@link UserManager}. 122 * 123 * Method naming convention: 124 * <ul> 125 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 126 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 127 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 128 * </ul> 129 */ 130public class UserManagerService extends IUserManager.Stub { 131 132 private static final String LOG_TAG = "UserManagerService"; 133 static final boolean DBG = false; // DO NOT SUBMIT WITH TRUE 134 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 135 // Can be used for manual testing of id recycling 136 private static final boolean RELEASE_DELETED_USER_ID = false; // DO NOT SUBMIT WITH TRUE 137 138 private static final String TAG_NAME = "name"; 139 private static final String TAG_ACCOUNT = "account"; 140 private static final String ATTR_FLAGS = "flags"; 141 private static final String ATTR_ICON_PATH = "icon"; 142 private static final String ATTR_ID = "id"; 143 private static final String ATTR_CREATION_TIME = "created"; 144 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 145 private static final String ATTR_LAST_LOGGED_IN_FINGERPRINT = "lastLoggedInFingerprint"; 146 private static final String ATTR_SERIAL_NO = "serialNumber"; 147 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 148 private static final String ATTR_PARTIAL = "partial"; 149 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 150 private static final String ATTR_USER_VERSION = "version"; 151 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 152 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 153 private static final String ATTR_SEED_ACCOUNT_NAME = "seedAccountName"; 154 private static final String ATTR_SEED_ACCOUNT_TYPE = "seedAccountType"; 155 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 156 private static final String TAG_USERS = "users"; 157 private static final String TAG_USER = "user"; 158 private static final String TAG_RESTRICTIONS = "restrictions"; 159 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 160 private static final String TAG_GLOBAL_RESTRICTION_OWNER_ID = "globalRestrictionOwnerUserId"; 161 private static final String TAG_ENTRY = "entry"; 162 private static final String TAG_VALUE = "value"; 163 private static final String TAG_SEED_ACCOUNT_OPTIONS = "seedAccountOptions"; 164 private static final String ATTR_KEY = "key"; 165 private static final String ATTR_VALUE_TYPE = "type"; 166 private static final String ATTR_MULTIPLE = "m"; 167 168 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 169 private static final String ATTR_TYPE_STRING = "s"; 170 private static final String ATTR_TYPE_BOOLEAN = "b"; 171 private static final String ATTR_TYPE_INTEGER = "i"; 172 private static final String ATTR_TYPE_BUNDLE = "B"; 173 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 174 175 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 176 private static final String USER_LIST_FILENAME = "userlist.xml"; 177 private static final String USER_PHOTO_FILENAME = "photo.png"; 178 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 179 180 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 181 private static final String XML_SUFFIX = ".xml"; 182 183 private static final int ALLOWED_FLAGS_FOR_CREATE_USERS_PERMISSION = 184 UserInfo.FLAG_MANAGED_PROFILE 185 | UserInfo.FLAG_EPHEMERAL 186 | UserInfo.FLAG_RESTRICTED 187 | UserInfo.FLAG_GUEST 188 | UserInfo.FLAG_DEMO; 189 190 @VisibleForTesting 191 static final int MIN_USER_ID = 10; 192 // We need to keep process uid within Integer.MAX_VALUE. 193 @VisibleForTesting 194 static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 195 196 // Max size of the queue of recently removed users 197 @VisibleForTesting 198 static final int MAX_RECENTLY_REMOVED_IDS_SIZE = 100; 199 200 private static final int USER_VERSION = 6; 201 202 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 203 204 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 205 // without first making sure that the rest of the framework is prepared for it. 206 private static final int MAX_MANAGED_PROFILES = 1; 207 208 static final int WRITE_USER_MSG = 1; 209 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 210 211 private static final String XATTR_SERIAL = "user.serial"; 212 213 // Tron counters 214 private static final String TRON_GUEST_CREATED = "users_guest_created"; 215 private static final String TRON_USER_CREATED = "users_user_created"; 216 217 private final Context mContext; 218 private final PackageManagerService mPm; 219 private final Object mPackagesLock; 220 // Short-term lock for internal state, when interaction/sync with PM is not required 221 private final Object mUsersLock = new Object(); 222 private final Object mRestrictionsLock = new Object(); 223 224 private final Handler mHandler; 225 226 private final File mUsersDir; 227 private final File mUserListFile; 228 229 private static final IBinder mUserRestriconToken = new Binder(); 230 231 /** 232 * User-related information that is used for persisting to flash. Only UserInfo is 233 * directly exposed to other system apps. 234 */ 235 private static class UserData { 236 // Basic user information and properties 237 UserInfo info; 238 // Account name used when there is a strong association between a user and an account 239 String account; 240 // Account information for seeding into a newly created user. This could also be 241 // used for login validation for an existing user, for updating their credentials. 242 // In the latter case, data may not need to be persisted as it is only valid for the 243 // current login session. 244 String seedAccountName; 245 String seedAccountType; 246 PersistableBundle seedAccountOptions; 247 // Whether to perist the seed account information to be available after a boot 248 boolean persistSeedData; 249 250 void clearSeedAccountData() { 251 seedAccountName = null; 252 seedAccountType = null; 253 seedAccountOptions = null; 254 persistSeedData = false; 255 } 256 } 257 258 @GuardedBy("mUsersLock") 259 private final SparseArray<UserData> mUsers = new SparseArray<>(); 260 261 /** 262 * User restrictions set via UserManager. This doesn't include restrictions set by 263 * device owner / profile owners. 264 * 265 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 266 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 267 * maybe shared between {@link #mBaseUserRestrictions} and 268 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 269 * (Otherwise we won't be able to detect what restrictions have changed in 270 * {@link #updateUserRestrictionsInternalLR}. 271 */ 272 @GuardedBy("mRestrictionsLock") 273 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 274 275 /** 276 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 277 * with device / profile owner restrictions. We'll initialize it lazily; use 278 * {@link #getEffectiveUserRestrictions} to access it. 279 * 280 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 281 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 282 * maybe shared between {@link #mBaseUserRestrictions} and 283 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 284 * (Otherwise we won't be able to detect what restrictions have changed in 285 * {@link #updateUserRestrictionsInternalLR}. 286 */ 287 @GuardedBy("mRestrictionsLock") 288 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 289 290 /** 291 * User restrictions that have already been applied in 292 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 293 * that have changed since the last 294 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 295 */ 296 @GuardedBy("mRestrictionsLock") 297 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 298 299 /** 300 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 301 * that should be applied to all users, including guests. 302 */ 303 @GuardedBy("mRestrictionsLock") 304 private Bundle mDevicePolicyGlobalUserRestrictions; 305 306 /** 307 * Id of the user that set global restrictions. 308 */ 309 @GuardedBy("mRestrictionsLock") 310 private int mGlobalRestrictionOwnerUserId = UserHandle.USER_NULL; 311 312 /** 313 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 314 * for each user. 315 */ 316 @GuardedBy("mRestrictionsLock") 317 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 318 319 @GuardedBy("mGuestRestrictions") 320 private final Bundle mGuestRestrictions = new Bundle(); 321 322 /** 323 * Set of user IDs being actively removed. Removed IDs linger in this set 324 * for several seconds to work around a VFS caching issue. 325 * Use {@link #addRemovingUserIdLocked(int)} to add elements to this array 326 */ 327 @GuardedBy("mUsersLock") 328 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 329 330 /** 331 * Queue of recently removed userIds. Used for recycling of userIds 332 */ 333 @GuardedBy("mUsersLock") 334 private final LinkedList<Integer> mRecentlyRemovedIds = new LinkedList<>(); 335 336 @GuardedBy("mUsersLock") 337 private int[] mUserIds; 338 @GuardedBy("mPackagesLock") 339 private int mNextSerialNumber; 340 private int mUserVersion = 0; 341 342 private IAppOpsService mAppOpsService; 343 344 private final LocalService mLocalService; 345 346 @GuardedBy("mUsersLock") 347 private boolean mIsDeviceManaged; 348 349 @GuardedBy("mUsersLock") 350 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 351 352 @GuardedBy("mUserRestrictionsListeners") 353 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 354 new ArrayList<>(); 355 356 private final LockPatternUtils mLockPatternUtils; 357 358 private final String ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK = 359 "com.android.server.pm.DISABLE_QUIET_MODE_AFTER_UNLOCK"; 360 361 private final BroadcastReceiver mDisableQuietModeCallback = new BroadcastReceiver() { 362 @Override 363 public void onReceive(Context context, Intent intent) { 364 if (ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK.equals(intent.getAction())) { 365 final IntentSender target = intent.getParcelableExtra(Intent.EXTRA_INTENT); 366 final int userHandle = intent.getIntExtra(Intent.EXTRA_USER_ID, 0); 367 setQuietModeEnabled(userHandle, false); 368 if (target != null) { 369 try { 370 mContext.startIntentSender(target, null, 0, 0, 0); 371 } catch (IntentSender.SendIntentException e) { 372 /* ignore */ 373 } 374 } 375 } 376 } 377 }; 378 379 /** 380 * Whether all users should be created ephemeral. 381 */ 382 @GuardedBy("mUsersLock") 383 private boolean mForceEphemeralUsers; 384 385 @GuardedBy("mUserStates") 386 private final SparseIntArray mUserStates = new SparseIntArray(); 387 388 private static UserManagerService sInstance; 389 390 public static UserManagerService getInstance() { 391 synchronized (UserManagerService.class) { 392 return sInstance; 393 } 394 } 395 396 public static class LifeCycle extends SystemService { 397 398 private UserManagerService mUms; 399 400 /** 401 * @param context 402 */ 403 public LifeCycle(Context context) { 404 super(context); 405 } 406 407 @Override 408 public void onStart() { 409 mUms = UserManagerService.getInstance(); 410 publishBinderService(Context.USER_SERVICE, mUms); 411 } 412 413 @Override 414 public void onBootPhase(int phase) { 415 if (phase == SystemService.PHASE_ACTIVITY_MANAGER_READY) { 416 mUms.cleanupPartialUsers(); 417 } 418 } 419 } 420 421 // TODO b/28848102 Add support for test dependencies injection 422 @VisibleForTesting 423 UserManagerService(Context context) { 424 this(context, null, new Object(), context.getCacheDir()); 425 } 426 427 /** 428 * Called by package manager to create the service. This is closely 429 * associated with the package manager, and the given lock is the 430 * package manager's own lock. 431 */ 432 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 433 this(context, pm, packagesLock, Environment.getDataDirectory()); 434 } 435 436 private UserManagerService(Context context, PackageManagerService pm, 437 Object packagesLock, File dataDir) { 438 mContext = context; 439 mPm = pm; 440 mPackagesLock = packagesLock; 441 mHandler = new MainHandler(); 442 synchronized (mPackagesLock) { 443 mUsersDir = new File(dataDir, USER_INFO_DIR); 444 mUsersDir.mkdirs(); 445 // Make zeroth user directory, for services to migrate their files to that location 446 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 447 userZeroDir.mkdirs(); 448 FileUtils.setPermissions(mUsersDir.toString(), 449 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 450 -1, -1); 451 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 452 initDefaultGuestRestrictions(); 453 readUserListLP(); 454 sInstance = this; 455 } 456 mLocalService = new LocalService(); 457 LocalServices.addService(UserManagerInternal.class, mLocalService); 458 mLockPatternUtils = new LockPatternUtils(mContext); 459 mUserStates.put(UserHandle.USER_SYSTEM, UserState.STATE_BOOTING); 460 } 461 462 void systemReady() { 463 mAppOpsService = IAppOpsService.Stub.asInterface( 464 ServiceManager.getService(Context.APP_OPS_SERVICE)); 465 466 synchronized (mRestrictionsLock) { 467 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 468 } 469 470 UserInfo currentGuestUser = findCurrentGuestUser(); 471 if (currentGuestUser != null && !hasUserRestriction( 472 UserManager.DISALLOW_CONFIG_WIFI, currentGuestUser.id)) { 473 // If a guest user currently exists, apply the DISALLOW_CONFIG_WIFI option 474 // to it, in case this guest was created in a previous version where this 475 // user restriction was not a default guest restriction. 476 setUserRestriction(UserManager.DISALLOW_CONFIG_WIFI, true, currentGuestUser.id); 477 } 478 479 mContext.registerReceiver(mDisableQuietModeCallback, 480 new IntentFilter(ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK), 481 null, mHandler); 482 } 483 484 void cleanupPartialUsers() { 485 // Prune out any partially created, partially removed and ephemeral users. 486 ArrayList<UserInfo> partials = new ArrayList<>(); 487 synchronized (mUsersLock) { 488 final int userSize = mUsers.size(); 489 for (int i = 0; i < userSize; i++) { 490 UserInfo ui = mUsers.valueAt(i).info; 491 if ((ui.partial || ui.guestToRemove || ui.isEphemeral()) && i != 0) { 492 partials.add(ui); 493 addRemovingUserIdLocked(ui.id); 494 ui.partial = true; 495 } 496 } 497 } 498 final int partialsSize = partials.size(); 499 for (int i = 0; i < partialsSize; i++) { 500 UserInfo ui = partials.get(i); 501 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 502 + " (name=" + ui.name + ")"); 503 removeUserState(ui.id); 504 } 505 } 506 507 @Override 508 public String getUserAccount(int userId) { 509 checkManageUserAndAcrossUsersFullPermission("get user account"); 510 synchronized (mUsersLock) { 511 return mUsers.get(userId).account; 512 } 513 } 514 515 @Override 516 public void setUserAccount(int userId, String accountName) { 517 checkManageUserAndAcrossUsersFullPermission("set user account"); 518 UserData userToUpdate = null; 519 synchronized (mPackagesLock) { 520 synchronized (mUsersLock) { 521 final UserData userData = mUsers.get(userId); 522 if (userData == null) { 523 Slog.e(LOG_TAG, "User not found for setting user account: u" + userId); 524 return; 525 } 526 String currentAccount = userData.account; 527 if (!Objects.equal(currentAccount, accountName)) { 528 userData.account = accountName; 529 userToUpdate = userData; 530 } 531 } 532 533 if (userToUpdate != null) { 534 writeUserLP(userToUpdate); 535 } 536 } 537 } 538 539 @Override 540 public UserInfo getPrimaryUser() { 541 checkManageUsersPermission("query users"); 542 synchronized (mUsersLock) { 543 final int userSize = mUsers.size(); 544 for (int i = 0; i < userSize; i++) { 545 UserInfo ui = mUsers.valueAt(i).info; 546 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 547 return ui; 548 } 549 } 550 } 551 return null; 552 } 553 554 @Override 555 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 556 checkManageOrCreateUsersPermission("query users"); 557 synchronized (mUsersLock) { 558 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 559 final int userSize = mUsers.size(); 560 for (int i = 0; i < userSize; i++) { 561 UserInfo ui = mUsers.valueAt(i).info; 562 if (ui.partial) { 563 continue; 564 } 565 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 566 users.add(userWithName(ui)); 567 } 568 } 569 return users; 570 } 571 } 572 573 @Override 574 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 575 boolean returnFullInfo = true; 576 if (userId != UserHandle.getCallingUserId()) { 577 checkManageOrCreateUsersPermission("getting profiles related to user " + userId); 578 } else { 579 returnFullInfo = hasManageUsersPermission(); 580 } 581 final long ident = Binder.clearCallingIdentity(); 582 try { 583 synchronized (mUsersLock) { 584 return getProfilesLU(userId, enabledOnly, returnFullInfo); 585 } 586 } finally { 587 Binder.restoreCallingIdentity(ident); 588 } 589 } 590 591 @Override 592 public int[] getProfileIds(int userId, boolean enabledOnly) { 593 if (userId != UserHandle.getCallingUserId()) { 594 checkManageUsersPermission("getting profiles related to user " + userId); 595 } 596 final long ident = Binder.clearCallingIdentity(); 597 try { 598 synchronized (mUsersLock) { 599 return getProfileIdsLU(userId, enabledOnly).toArray(); 600 } 601 } finally { 602 Binder.restoreCallingIdentity(ident); 603 } 604 } 605 606 /** Assume permissions already checked and caller's identity cleared */ 607 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly, boolean fullInfo) { 608 IntArray profileIds = getProfileIdsLU(userId, enabledOnly); 609 ArrayList<UserInfo> users = new ArrayList<>(profileIds.size()); 610 for (int i = 0; i < profileIds.size(); i++) { 611 int profileId = profileIds.get(i); 612 UserInfo userInfo = mUsers.get(profileId).info; 613 // If full info is not required - clear PII data to prevent 3P apps from reading it 614 if (!fullInfo) { 615 userInfo = new UserInfo(userInfo); 616 userInfo.name = null; 617 userInfo.iconPath = null; 618 } else { 619 userInfo = userWithName(userInfo); 620 } 621 users.add(userInfo); 622 } 623 return users; 624 } 625 626 /** 627 * Assume permissions already checked and caller's identity cleared 628 */ 629 private IntArray getProfileIdsLU(int userId, boolean enabledOnly) { 630 UserInfo user = getUserInfoLU(userId); 631 IntArray result = new IntArray(mUsers.size()); 632 if (user == null) { 633 // Probably a dying user 634 return result; 635 } 636 final int userSize = mUsers.size(); 637 for (int i = 0; i < userSize; i++) { 638 UserInfo profile = mUsers.valueAt(i).info; 639 if (!isProfileOf(user, profile)) { 640 continue; 641 } 642 if (enabledOnly && !profile.isEnabled()) { 643 continue; 644 } 645 if (mRemovingUserIds.get(profile.id)) { 646 continue; 647 } 648 if (profile.partial) { 649 continue; 650 } 651 result.add(profile.id); 652 } 653 return result; 654 } 655 656 @Override 657 public int getCredentialOwnerProfile(int userHandle) { 658 checkManageUsersPermission("get the credential owner"); 659 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 660 synchronized (mUsersLock) { 661 UserInfo profileParent = getProfileParentLU(userHandle); 662 if (profileParent != null) { 663 return profileParent.id; 664 } 665 } 666 } 667 668 return userHandle; 669 } 670 671 @Override 672 public boolean isSameProfileGroup(int userId, int otherUserId) { 673 if (userId == otherUserId) return true; 674 checkManageUsersPermission("check if in the same profile group"); 675 synchronized (mPackagesLock) { 676 return isSameProfileGroupLP(userId, otherUserId); 677 } 678 } 679 680 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 681 synchronized (mUsersLock) { 682 UserInfo userInfo = getUserInfoLU(userId); 683 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 684 return false; 685 } 686 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 687 if (otherUserInfo == null 688 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 689 return false; 690 } 691 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 692 } 693 } 694 695 @Override 696 public UserInfo getProfileParent(int userHandle) { 697 checkManageUsersPermission("get the profile parent"); 698 synchronized (mUsersLock) { 699 return getProfileParentLU(userHandle); 700 } 701 } 702 703 private UserInfo getProfileParentLU(int userHandle) { 704 UserInfo profile = getUserInfoLU(userHandle); 705 if (profile == null) { 706 return null; 707 } 708 int parentUserId = profile.profileGroupId; 709 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 710 return null; 711 } else { 712 return getUserInfoLU(parentUserId); 713 } 714 } 715 716 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 717 return user.id == profile.id || 718 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 719 && user.profileGroupId == profile.profileGroupId); 720 } 721 722 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 723 UserHandle parentHandle, boolean inQuietMode) { 724 Intent intent = new Intent(); 725 if (inQuietMode) { 726 intent.setAction(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE); 727 } else { 728 intent.setAction(Intent.ACTION_MANAGED_PROFILE_AVAILABLE); 729 } 730 intent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 731 intent.putExtra(Intent.EXTRA_USER, profileHandle); 732 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 733 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 734 mContext.sendBroadcastAsUser(intent, parentHandle); 735 } 736 737 @Override 738 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 739 checkManageUsersPermission("silence profile"); 740 boolean changed = false; 741 UserInfo profile, parent; 742 synchronized (mPackagesLock) { 743 synchronized (mUsersLock) { 744 profile = getUserInfoLU(userHandle); 745 parent = getProfileParentLU(userHandle); 746 747 } 748 if (profile == null || !profile.isManagedProfile()) { 749 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 750 } 751 if (profile.isQuietModeEnabled() != enableQuietMode) { 752 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 753 writeUserLP(getUserDataLU(profile.id)); 754 changed = true; 755 } 756 } 757 if (changed) { 758 long identity = Binder.clearCallingIdentity(); 759 try { 760 if (enableQuietMode) { 761 ActivityManagerNative.getDefault().stopUser(userHandle, /* force */true, null); 762 LocalServices.getService(ActivityManagerInternal.class) 763 .killForegroundAppsForUser(userHandle); 764 } else { 765 ActivityManagerNative.getDefault().startUserInBackground(userHandle); 766 } 767 } catch (RemoteException e) { 768 Slog.e(LOG_TAG, "fail to start/stop user for quiet mode", e); 769 } finally { 770 Binder.restoreCallingIdentity(identity); 771 } 772 773 broadcastProfileAvailabilityChanges(profile.getUserHandle(), parent.getUserHandle(), 774 enableQuietMode); 775 } 776 } 777 778 @Override 779 public boolean isQuietModeEnabled(int userHandle) { 780 synchronized (mPackagesLock) { 781 UserInfo info; 782 synchronized (mUsersLock) { 783 info = getUserInfoLU(userHandle); 784 } 785 if (info == null || !info.isManagedProfile()) { 786 return false; 787 } 788 return info.isQuietModeEnabled(); 789 } 790 } 791 792 @Override 793 public boolean trySetQuietModeDisabled(int userHandle, IntentSender target) { 794 checkManageUsersPermission("silence profile"); 795 if (StorageManager.isUserKeyUnlocked(userHandle) 796 || !mLockPatternUtils.isSecure(userHandle)) { 797 // if the user is already unlocked, no need to show a profile challenge 798 setQuietModeEnabled(userHandle, false); 799 return true; 800 } 801 802 long identity = Binder.clearCallingIdentity(); 803 try { 804 // otherwise, we show a profile challenge to trigger decryption of the user 805 final KeyguardManager km = (KeyguardManager) mContext.getSystemService( 806 Context.KEYGUARD_SERVICE); 807 // We should use userHandle not credentialOwnerUserId here, as even if it is unified 808 // lock, confirm screenlock page will know and show personal challenge, and unlock 809 // work profile when personal challenge is correct 810 final Intent unlockIntent = km.createConfirmDeviceCredentialIntent(null, null, 811 userHandle); 812 if (unlockIntent == null) { 813 return false; 814 } 815 final Intent callBackIntent = new Intent( 816 ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK); 817 if (target != null) { 818 callBackIntent.putExtra(Intent.EXTRA_INTENT, target); 819 } 820 callBackIntent.putExtra(Intent.EXTRA_USER_ID, userHandle); 821 callBackIntent.setPackage(mContext.getPackageName()); 822 callBackIntent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); 823 final PendingIntent pendingIntent = PendingIntent.getBroadcast( 824 mContext, 825 0, 826 callBackIntent, 827 PendingIntent.FLAG_CANCEL_CURRENT | 828 PendingIntent.FLAG_ONE_SHOT | 829 PendingIntent.FLAG_IMMUTABLE); 830 // After unlocking the challenge, it will disable quiet mode and run the original 831 // intentSender 832 unlockIntent.putExtra(Intent.EXTRA_INTENT, pendingIntent.getIntentSender()); 833 unlockIntent.setFlags(FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS); 834 mContext.startActivity(unlockIntent); 835 } finally { 836 Binder.restoreCallingIdentity(identity); 837 } 838 return false; 839 } 840 841 @Override 842 public void setUserEnabled(int userId) { 843 checkManageUsersPermission("enable user"); 844 synchronized (mPackagesLock) { 845 UserInfo info; 846 synchronized (mUsersLock) { 847 info = getUserInfoLU(userId); 848 } 849 if (info != null && !info.isEnabled()) { 850 info.flags ^= UserInfo.FLAG_DISABLED; 851 writeUserLP(getUserDataLU(info.id)); 852 } 853 } 854 } 855 856 @Override 857 public UserInfo getUserInfo(int userId) { 858 checkManageOrCreateUsersPermission("query user"); 859 synchronized (mUsersLock) { 860 return userWithName(getUserInfoLU(userId)); 861 } 862 } 863 864 /** 865 * Returns a UserInfo object with the name filled in, for Owner, or the original 866 * if the name is already set. 867 */ 868 private UserInfo userWithName(UserInfo orig) { 869 if (orig != null && orig.name == null && orig.id == UserHandle.USER_SYSTEM) { 870 UserInfo withName = new UserInfo(orig); 871 withName.name = getOwnerName(); 872 return withName; 873 } else { 874 return orig; 875 } 876 } 877 878 @Override 879 public boolean isManagedProfile(int userId) { 880 int callingUserId = UserHandle.getCallingUserId(); 881 if (callingUserId != userId && !hasManageUsersPermission()) { 882 synchronized (mPackagesLock) { 883 if (!isSameProfileGroupLP(callingUserId, userId)) { 884 throw new SecurityException( 885 "You need MANAGE_USERS permission to: check if specified user a " + 886 "managed profile outside your profile group"); 887 } 888 } 889 } 890 synchronized (mUsersLock) { 891 UserInfo userInfo = getUserInfoLU(userId); 892 return userInfo != null && userInfo.isManagedProfile(); 893 } 894 } 895 896 @Override 897 public boolean isDemoUser(int userId) { 898 int callingUserId = UserHandle.getCallingUserId(); 899 if (callingUserId != userId && !hasManageUsersPermission()) { 900 throw new SecurityException("You need MANAGE_USERS permission to query if u=" + userId 901 + " is a demo user"); 902 } 903 synchronized (mUsersLock) { 904 UserInfo userInfo = getUserInfoLU(userId); 905 return userInfo != null && userInfo.isDemo(); 906 } 907 } 908 909 @Override 910 public boolean isRestricted() { 911 synchronized (mUsersLock) { 912 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 913 } 914 } 915 916 @Override 917 public boolean canHaveRestrictedProfile(int userId) { 918 checkManageUsersPermission("canHaveRestrictedProfile"); 919 synchronized (mUsersLock) { 920 final UserInfo userInfo = getUserInfoLU(userId); 921 if (userInfo == null || !userInfo.canHaveProfile()) { 922 return false; 923 } 924 if (!userInfo.isAdmin()) { 925 return false; 926 } 927 // restricted profile can be created if there is no DO set and the admin user has no PO; 928 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 929 } 930 } 931 932 /* 933 * Should be locked on mUsers before calling this. 934 */ 935 private UserInfo getUserInfoLU(int userId) { 936 final UserData userData = mUsers.get(userId); 937 // If it is partial and not in the process of being removed, return as unknown user. 938 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 939 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 940 return null; 941 } 942 return userData != null ? userData.info : null; 943 } 944 945 private UserData getUserDataLU(int userId) { 946 final UserData userData = mUsers.get(userId); 947 // If it is partial and not in the process of being removed, return as unknown user. 948 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 949 return null; 950 } 951 return userData; 952 } 953 954 /** 955 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 956 * <p>No permissions checking or any addition checks are made</p> 957 */ 958 private UserInfo getUserInfoNoChecks(int userId) { 959 synchronized (mUsersLock) { 960 final UserData userData = mUsers.get(userId); 961 return userData != null ? userData.info : null; 962 } 963 } 964 965 /** 966 * Obtains {@link #mUsersLock} and return UserData from mUsers. 967 * <p>No permissions checking or any addition checks are made</p> 968 */ 969 private UserData getUserDataNoChecks(int userId) { 970 synchronized (mUsersLock) { 971 return mUsers.get(userId); 972 } 973 } 974 975 /** Called by PackageManagerService */ 976 public boolean exists(int userId) { 977 return getUserInfoNoChecks(userId) != null; 978 } 979 980 @Override 981 public void setUserName(int userId, String name) { 982 checkManageUsersPermission("rename users"); 983 boolean changed = false; 984 synchronized (mPackagesLock) { 985 UserData userData = getUserDataNoChecks(userId); 986 if (userData == null || userData.info.partial) { 987 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 988 return; 989 } 990 if (name != null && !name.equals(userData.info.name)) { 991 userData.info.name = name; 992 writeUserLP(userData); 993 changed = true; 994 } 995 } 996 if (changed) { 997 sendUserInfoChangedBroadcast(userId); 998 } 999 } 1000 1001 @Override 1002 public void setUserIcon(int userId, Bitmap bitmap) { 1003 checkManageUsersPermission("update users"); 1004 if (hasUserRestriction(UserManager.DISALLOW_SET_USER_ICON, userId)) { 1005 Log.w(LOG_TAG, "Cannot set user icon. DISALLOW_SET_USER_ICON is enabled."); 1006 return; 1007 } 1008 mLocalService.setUserIcon(userId, bitmap); 1009 } 1010 1011 1012 1013 private void sendUserInfoChangedBroadcast(int userId) { 1014 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 1015 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 1016 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1017 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 1018 } 1019 1020 @Override 1021 public ParcelFileDescriptor getUserIcon(int targetUserId) { 1022 String iconPath; 1023 synchronized (mPackagesLock) { 1024 UserInfo targetUserInfo = getUserInfoNoChecks(targetUserId); 1025 if (targetUserInfo == null || targetUserInfo.partial) { 1026 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + targetUserId); 1027 return null; 1028 } 1029 1030 final int callingUserId = UserHandle.getCallingUserId(); 1031 final int callingGroupId = getUserInfoNoChecks(callingUserId).profileGroupId; 1032 final int targetGroupId = targetUserInfo.profileGroupId; 1033 final boolean sameGroup = (callingGroupId != UserInfo.NO_PROFILE_GROUP_ID 1034 && callingGroupId == targetGroupId); 1035 if ((callingUserId != targetUserId) && !sameGroup) { 1036 checkManageUsersPermission("get the icon of a user who is not related"); 1037 } 1038 1039 if (targetUserInfo.iconPath == null) { 1040 return null; 1041 } 1042 iconPath = targetUserInfo.iconPath; 1043 } 1044 1045 try { 1046 return ParcelFileDescriptor.open( 1047 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 1048 } catch (FileNotFoundException e) { 1049 Log.e(LOG_TAG, "Couldn't find icon file", e); 1050 } 1051 return null; 1052 } 1053 1054 public void makeInitialized(int userId) { 1055 checkManageUsersPermission("makeInitialized"); 1056 boolean scheduleWriteUser = false; 1057 UserData userData; 1058 synchronized (mUsersLock) { 1059 userData = mUsers.get(userId); 1060 if (userData == null || userData.info.partial) { 1061 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 1062 return; 1063 } 1064 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1065 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1066 scheduleWriteUser = true; 1067 } 1068 } 1069 if (scheduleWriteUser) { 1070 scheduleWriteUser(userData); 1071 } 1072 } 1073 1074 /** 1075 * If default guest restrictions haven't been initialized yet, add the basic 1076 * restrictions. 1077 */ 1078 private void initDefaultGuestRestrictions() { 1079 synchronized (mGuestRestrictions) { 1080 if (mGuestRestrictions.isEmpty()) { 1081 mGuestRestrictions.putBoolean(UserManager.DISALLOW_CONFIG_WIFI, true); 1082 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 1083 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 1084 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 1085 } 1086 } 1087 } 1088 1089 @Override 1090 public Bundle getDefaultGuestRestrictions() { 1091 checkManageUsersPermission("getDefaultGuestRestrictions"); 1092 synchronized (mGuestRestrictions) { 1093 return new Bundle(mGuestRestrictions); 1094 } 1095 } 1096 1097 @Override 1098 public void setDefaultGuestRestrictions(Bundle restrictions) { 1099 checkManageUsersPermission("setDefaultGuestRestrictions"); 1100 synchronized (mGuestRestrictions) { 1101 mGuestRestrictions.clear(); 1102 mGuestRestrictions.putAll(restrictions); 1103 } 1104 synchronized (mPackagesLock) { 1105 writeUserListLP(); 1106 } 1107 } 1108 1109 /** 1110 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 1111 */ 1112 void setDevicePolicyUserRestrictionsInner(int userId, @NonNull Bundle local, 1113 @Nullable Bundle global) { 1114 Preconditions.checkNotNull(local); 1115 boolean globalChanged = false; 1116 boolean localChanged; 1117 synchronized (mRestrictionsLock) { 1118 if (global != null) { 1119 // Update global. 1120 globalChanged = !UserRestrictionsUtils.areEqual( 1121 mDevicePolicyGlobalUserRestrictions, global); 1122 if (globalChanged) { 1123 mDevicePolicyGlobalUserRestrictions = global; 1124 } 1125 // Remember the global restriction owner userId to be able to make a distinction 1126 // in getUserRestrictionSource on who set local policies. 1127 mGlobalRestrictionOwnerUserId = userId; 1128 } else { 1129 if (mGlobalRestrictionOwnerUserId == userId) { 1130 // When profile owner sets restrictions it passes null global bundle and we 1131 // reset global restriction owner userId. 1132 // This means this user used to have DO, but now the DO is gone and the user 1133 // instead has PO. 1134 mGlobalRestrictionOwnerUserId = UserHandle.USER_NULL; 1135 } 1136 } 1137 { 1138 // Update local. 1139 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 1140 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 1141 if (localChanged) { 1142 mDevicePolicyLocalUserRestrictions.put(userId, local); 1143 } 1144 } 1145 } 1146 if (DBG) { 1147 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 1148 + " global=" + global + (globalChanged ? " (changed)" : "") 1149 + " local=" + local + (localChanged ? " (changed)" : "") 1150 ); 1151 } 1152 // Don't call them within the mRestrictionsLock. 1153 synchronized (mPackagesLock) { 1154 if (localChanged) { 1155 writeUserLP(getUserDataNoChecks(userId)); 1156 } 1157 if (globalChanged) { 1158 writeUserListLP(); 1159 } 1160 } 1161 1162 synchronized (mRestrictionsLock) { 1163 if (globalChanged) { 1164 applyUserRestrictionsForAllUsersLR(); 1165 } else if (localChanged) { 1166 applyUserRestrictionsLR(userId); 1167 } 1168 } 1169 } 1170 1171 @GuardedBy("mRestrictionsLock") 1172 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 1173 final Bundle baseRestrictions = 1174 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 1175 final Bundle global = mDevicePolicyGlobalUserRestrictions; 1176 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 1177 1178 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 1179 // Common case first. 1180 return baseRestrictions; 1181 } 1182 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 1183 UserRestrictionsUtils.merge(effective, global); 1184 UserRestrictionsUtils.merge(effective, local); 1185 1186 return effective; 1187 } 1188 1189 @GuardedBy("mRestrictionsLock") 1190 private void invalidateEffectiveUserRestrictionsLR(int userId) { 1191 if (DBG) { 1192 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 1193 } 1194 mCachedEffectiveUserRestrictions.remove(userId); 1195 } 1196 1197 private Bundle getEffectiveUserRestrictions(int userId) { 1198 synchronized (mRestrictionsLock) { 1199 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 1200 if (restrictions == null) { 1201 restrictions = computeEffectiveUserRestrictionsLR(userId); 1202 mCachedEffectiveUserRestrictions.put(userId, restrictions); 1203 } 1204 return restrictions; 1205 } 1206 } 1207 1208 /** @return a specific user restriction that's in effect currently. */ 1209 @Override 1210 public boolean hasUserRestriction(String restrictionKey, int userId) { 1211 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1212 return false; 1213 } 1214 Bundle restrictions = getEffectiveUserRestrictions(userId); 1215 return restrictions != null && restrictions.getBoolean(restrictionKey); 1216 } 1217 1218 /** 1219 * @hide 1220 * 1221 * Returns who set a user restriction on a user. 1222 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 1223 * @param restrictionKey the string key representing the restriction 1224 * @param userId the id of the user for whom to retrieve the restrictions. 1225 * @return The source of user restriction. Any combination of 1226 * {@link UserManager#RESTRICTION_NOT_SET}, 1227 * {@link UserManager#RESTRICTION_SOURCE_SYSTEM}, 1228 * {@link UserManager#RESTRICTION_SOURCE_DEVICE_OWNER} 1229 * and {@link UserManager#RESTRICTION_SOURCE_PROFILE_OWNER} 1230 */ 1231 @Override 1232 public int getUserRestrictionSource(String restrictionKey, int userId) { 1233 checkManageUsersPermission("getUserRestrictionSource"); 1234 int result = UserManager.RESTRICTION_NOT_SET; 1235 1236 // Shortcut for the most common case 1237 if (!hasUserRestriction(restrictionKey, userId)) { 1238 return result; 1239 } 1240 1241 if (hasBaseUserRestriction(restrictionKey, userId)) { 1242 result |= UserManager.RESTRICTION_SOURCE_SYSTEM; 1243 } 1244 1245 synchronized(mRestrictionsLock) { 1246 Bundle localRestrictions = mDevicePolicyLocalUserRestrictions.get(userId); 1247 if (!UserRestrictionsUtils.isEmpty(localRestrictions) 1248 && localRestrictions.getBoolean(restrictionKey)) { 1249 // Local restrictions may have been set by device owner the userId of which is 1250 // stored in mGlobalRestrictionOwnerUserId. 1251 if (mGlobalRestrictionOwnerUserId == userId) { 1252 result |= UserManager.RESTRICTION_SOURCE_DEVICE_OWNER; 1253 } else { 1254 result |= UserManager.RESTRICTION_SOURCE_PROFILE_OWNER; 1255 } 1256 } 1257 if (!UserRestrictionsUtils.isEmpty(mDevicePolicyGlobalUserRestrictions) 1258 && mDevicePolicyGlobalUserRestrictions.getBoolean(restrictionKey)) { 1259 result |= UserManager.RESTRICTION_SOURCE_DEVICE_OWNER; 1260 } 1261 } 1262 1263 return result; 1264 } 1265 1266 /** 1267 * @return UserRestrictions that are in effect currently. This always returns a new 1268 * {@link Bundle}. 1269 */ 1270 @Override 1271 public Bundle getUserRestrictions(int userId) { 1272 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 1273 } 1274 1275 @Override 1276 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 1277 checkManageUsersPermission("hasBaseUserRestriction"); 1278 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1279 return false; 1280 } 1281 synchronized (mRestrictionsLock) { 1282 Bundle bundle = mBaseUserRestrictions.get(userId); 1283 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 1284 } 1285 } 1286 1287 @Override 1288 public void setUserRestriction(String key, boolean value, int userId) { 1289 checkManageUsersPermission("setUserRestriction"); 1290 if (!UserRestrictionsUtils.isValidRestriction(key)) { 1291 return; 1292 } 1293 synchronized (mRestrictionsLock) { 1294 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 1295 // a copy. 1296 final Bundle newRestrictions = UserRestrictionsUtils.clone( 1297 mBaseUserRestrictions.get(userId)); 1298 newRestrictions.putBoolean(key, value); 1299 1300 updateUserRestrictionsInternalLR(newRestrictions, userId); 1301 } 1302 } 1303 1304 /** 1305 * Optionally updating user restrictions, calculate the effective user restrictions and also 1306 * propagate to other services and system settings. 1307 * 1308 * @param newRestrictions User restrictions to set. 1309 * If null, will not update user restrictions and only does the propagation. 1310 * @param userId target user ID. 1311 */ 1312 @GuardedBy("mRestrictionsLock") 1313 private void updateUserRestrictionsInternalLR( 1314 @Nullable Bundle newRestrictions, int userId) { 1315 1316 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 1317 mAppliedUserRestrictions.get(userId)); 1318 1319 // Update base restrictions. 1320 if (newRestrictions != null) { 1321 // If newRestrictions == the current one, it's probably a bug. 1322 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 1323 1324 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 1325 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 1326 != newRestrictions); 1327 1328 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 1329 mBaseUserRestrictions.put(userId, newRestrictions); 1330 scheduleWriteUser(getUserDataNoChecks(userId)); 1331 } 1332 } 1333 1334 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 1335 1336 mCachedEffectiveUserRestrictions.put(userId, effective); 1337 1338 // Apply the new restrictions. 1339 if (DBG) { 1340 debug("Applying user restrictions: userId=" + userId 1341 + " new=" + effective + " prev=" + prevAppliedRestrictions); 1342 } 1343 1344 if (mAppOpsService != null) { // We skip it until system-ready. 1345 mHandler.post(new Runnable() { 1346 @Override 1347 public void run() { 1348 try { 1349 mAppOpsService.setUserRestrictions(effective, mUserRestriconToken, userId); 1350 } catch (RemoteException e) { 1351 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1352 } 1353 } 1354 }); 1355 } 1356 1357 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1358 1359 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1360 } 1361 1362 private void propagateUserRestrictionsLR(final int userId, 1363 Bundle newRestrictions, Bundle prevRestrictions) { 1364 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1365 // actually, but we still need some kind of synchronization otherwise we might end up 1366 // calling listeners out-of-order, thus "LR". 1367 1368 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1369 return; 1370 } 1371 1372 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1373 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1374 1375 mHandler.post(new Runnable() { 1376 @Override 1377 public void run() { 1378 UserRestrictionsUtils.applyUserRestrictions( 1379 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1380 1381 final UserRestrictionsListener[] listeners; 1382 synchronized (mUserRestrictionsListeners) { 1383 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1384 mUserRestrictionsListeners.toArray(listeners); 1385 } 1386 for (int i = 0; i < listeners.length; i++) { 1387 listeners[i].onUserRestrictionsChanged(userId, 1388 newRestrictionsFinal, prevRestrictionsFinal); 1389 } 1390 } 1391 }); 1392 } 1393 1394 // Package private for the inner class. 1395 void applyUserRestrictionsLR(int userId) { 1396 updateUserRestrictionsInternalLR(null, userId); 1397 } 1398 1399 @GuardedBy("mRestrictionsLock") 1400 // Package private for the inner class. 1401 void applyUserRestrictionsForAllUsersLR() { 1402 if (DBG) { 1403 debug("applyUserRestrictionsForAllUsersLR"); 1404 } 1405 // First, invalidate all cached values. 1406 mCachedEffectiveUserRestrictions.clear(); 1407 1408 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 1409 // it on a handler. 1410 final Runnable r = new Runnable() { 1411 @Override 1412 public void run() { 1413 // Then get the list of running users. 1414 final int[] runningUsers; 1415 try { 1416 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 1417 } catch (RemoteException e) { 1418 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 1419 return; 1420 } 1421 // Then re-calculate the effective restrictions and apply, only for running users. 1422 // It's okay if a new user has started after the getRunningUserIds() call, 1423 // because we'll do the same thing (re-calculate the restrictions and apply) 1424 // when we start a user. 1425 synchronized (mRestrictionsLock) { 1426 for (int i = 0; i < runningUsers.length; i++) { 1427 applyUserRestrictionsLR(runningUsers[i]); 1428 } 1429 } 1430 } 1431 }; 1432 mHandler.post(r); 1433 } 1434 1435 /** 1436 * Check if we've hit the limit of how many users can be created. 1437 */ 1438 private boolean isUserLimitReached() { 1439 int count; 1440 synchronized (mUsersLock) { 1441 count = getAliveUsersExcludingGuestsCountLU(); 1442 } 1443 return count >= UserManager.getMaxSupportedUsers(); 1444 } 1445 1446 @Override 1447 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1448 checkManageUsersPermission("check if more managed profiles can be added."); 1449 if (ActivityManager.isLowRamDeviceStatic()) { 1450 return false; 1451 } 1452 if (!mContext.getPackageManager().hasSystemFeature( 1453 PackageManager.FEATURE_MANAGED_USERS)) { 1454 return false; 1455 } 1456 // Limit number of managed profiles that can be created 1457 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1458 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1459 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1460 return false; 1461 } 1462 synchronized(mUsersLock) { 1463 UserInfo userInfo = getUserInfoLU(userId); 1464 if (!userInfo.canHaveProfile()) { 1465 return false; 1466 } 1467 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1468 - profilesRemovedCount; 1469 // We allow creating a managed profile in the special case where there is only one user. 1470 return usersCountAfterRemoving == 1 1471 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1472 } 1473 } 1474 1475 private int getAliveUsersExcludingGuestsCountLU() { 1476 int aliveUserCount = 0; 1477 final int totalUserCount = mUsers.size(); 1478 // Skip over users being removed 1479 for (int i = 0; i < totalUserCount; i++) { 1480 UserInfo user = mUsers.valueAt(i).info; 1481 if (!mRemovingUserIds.get(user.id) 1482 && !user.isGuest() && !user.partial) { 1483 aliveUserCount++; 1484 } 1485 } 1486 return aliveUserCount; 1487 } 1488 1489 /** 1490 * Enforces that only the system UID or root's UID or apps that have the 1491 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1492 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1493 * permissions can make certain calls to the UserManager. 1494 * 1495 * @param message used as message if SecurityException is thrown 1496 * @throws SecurityException if the caller does not have enough privilege. 1497 */ 1498 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1499 final int uid = Binder.getCallingUid(); 1500 if (uid != Process.SYSTEM_UID && uid != 0 1501 && ActivityManager.checkComponentPermission( 1502 Manifest.permission.MANAGE_USERS, 1503 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1504 && ActivityManager.checkComponentPermission( 1505 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1506 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1507 throw new SecurityException( 1508 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1509 + message); 1510 } 1511 } 1512 1513 /** 1514 * Enforces that only the system UID or root's UID or apps that have the 1515 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1516 * permission can make certain calls to the UserManager. 1517 * 1518 * @param message used as message if SecurityException is thrown 1519 * @throws SecurityException if the caller is not system or root 1520 * @see #hasManageUsersPermission() 1521 */ 1522 private static final void checkManageUsersPermission(String message) { 1523 if (!hasManageUsersPermission()) { 1524 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1525 } 1526 } 1527 1528 /** 1529 * Enforces that only the system UID or root's UID or apps that have the 1530 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} or 1531 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS} 1532 * can make certain calls to the UserManager. 1533 * 1534 * @param message used as message if SecurityException is thrown 1535 * @throws SecurityException if the caller is not system or root 1536 * @see #hasManageOrCreateUsersPermission() 1537 */ 1538 private static final void checkManageOrCreateUsersPermission(String message) { 1539 if (!hasManageOrCreateUsersPermission()) { 1540 throw new SecurityException( 1541 "You either need MANAGE_USERS or CREATE_USERS permission to: " + message); 1542 } 1543 } 1544 1545 /** 1546 * Similar to {@link #checkManageOrCreateUsersPermission(String)} but when the caller is tries 1547 * to create user/profiles other than what is allowed for 1548 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS} permission, then it will only 1549 * allow callers with {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} permission. 1550 */ 1551 private static final void checkManageOrCreateUsersPermission(int creationFlags) { 1552 if ((creationFlags & ~ALLOWED_FLAGS_FOR_CREATE_USERS_PERMISSION) == 0) { 1553 if (!hasManageOrCreateUsersPermission()) { 1554 throw new SecurityException("You either need MANAGE_USERS or CREATE_USERS " 1555 + "permission to create an user with flags: " + creationFlags); 1556 } 1557 } else if (!hasManageUsersPermission()) { 1558 throw new SecurityException("You need MANAGE_USERS permission to create an user " 1559 + " with flags: " + creationFlags); 1560 } 1561 } 1562 1563 /** 1564 * @return whether the calling UID is system UID or root's UID or the calling app has the 1565 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS}. 1566 */ 1567 private static final boolean hasManageUsersPermission() { 1568 final int callingUid = Binder.getCallingUid(); 1569 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1570 || callingUid == Process.ROOT_UID 1571 || ActivityManager.checkComponentPermission( 1572 android.Manifest.permission.MANAGE_USERS, 1573 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1574 } 1575 1576 /** 1577 * @return whether the calling UID is system UID or root's UID or the calling app has the 1578 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} or 1579 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS}. 1580 */ 1581 private static final boolean hasManageOrCreateUsersPermission() { 1582 final int callingUid = Binder.getCallingUid(); 1583 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1584 || callingUid == Process.ROOT_UID 1585 || ActivityManager.checkComponentPermission( 1586 android.Manifest.permission.MANAGE_USERS, 1587 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED 1588 || ActivityManager.checkComponentPermission( 1589 android.Manifest.permission.CREATE_USERS, 1590 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1591 } 1592 1593 /** 1594 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1595 * UserManager. 1596 * 1597 * @param message used as message if SecurityException is thrown 1598 * @throws SecurityException if the caller is not system or root 1599 */ 1600 private static void checkSystemOrRoot(String message) { 1601 final int uid = Binder.getCallingUid(); 1602 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1603 throw new SecurityException("Only system may: " + message); 1604 } 1605 } 1606 1607 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1608 try { 1609 File dir = new File(mUsersDir, Integer.toString(info.id)); 1610 File file = new File(dir, USER_PHOTO_FILENAME); 1611 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1612 if (!dir.exists()) { 1613 dir.mkdir(); 1614 FileUtils.setPermissions( 1615 dir.getPath(), 1616 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1617 -1, -1); 1618 } 1619 FileOutputStream os; 1620 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1621 && tmp.renameTo(file) && SELinux.restorecon(file)) { 1622 info.iconPath = file.getAbsolutePath(); 1623 } 1624 try { 1625 os.close(); 1626 } catch (IOException ioe) { 1627 // What the ... ! 1628 } 1629 tmp.delete(); 1630 } catch (FileNotFoundException e) { 1631 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1632 } 1633 } 1634 1635 /** 1636 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1637 * cache it elsewhere. 1638 * @return the array of user ids. 1639 */ 1640 public int[] getUserIds() { 1641 synchronized (mUsersLock) { 1642 return mUserIds; 1643 } 1644 } 1645 1646 private void readUserListLP() { 1647 if (!mUserListFile.exists()) { 1648 fallbackToSingleUserLP(); 1649 return; 1650 } 1651 FileInputStream fis = null; 1652 AtomicFile userListFile = new AtomicFile(mUserListFile); 1653 try { 1654 fis = userListFile.openRead(); 1655 XmlPullParser parser = Xml.newPullParser(); 1656 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1657 int type; 1658 while ((type = parser.next()) != XmlPullParser.START_TAG 1659 && type != XmlPullParser.END_DOCUMENT) { 1660 // Skip 1661 } 1662 1663 if (type != XmlPullParser.START_TAG) { 1664 Slog.e(LOG_TAG, "Unable to read user list"); 1665 fallbackToSingleUserLP(); 1666 return; 1667 } 1668 1669 mNextSerialNumber = -1; 1670 if (parser.getName().equals(TAG_USERS)) { 1671 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1672 if (lastSerialNumber != null) { 1673 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1674 } 1675 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1676 if (versionNumber != null) { 1677 mUserVersion = Integer.parseInt(versionNumber); 1678 } 1679 } 1680 1681 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1682 1683 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1684 if (type == XmlPullParser.START_TAG) { 1685 final String name = parser.getName(); 1686 if (name.equals(TAG_USER)) { 1687 String id = parser.getAttributeValue(null, ATTR_ID); 1688 1689 UserData userData = readUserLP(Integer.parseInt(id)); 1690 1691 if (userData != null) { 1692 synchronized (mUsersLock) { 1693 mUsers.put(userData.info.id, userData); 1694 if (mNextSerialNumber < 0 1695 || mNextSerialNumber <= userData.info.id) { 1696 mNextSerialNumber = userData.info.id + 1; 1697 } 1698 } 1699 } 1700 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1701 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1702 && type != XmlPullParser.END_TAG) { 1703 if (type == XmlPullParser.START_TAG) { 1704 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1705 synchronized (mGuestRestrictions) { 1706 UserRestrictionsUtils 1707 .readRestrictions(parser, mGuestRestrictions); 1708 } 1709 } 1710 break; 1711 } 1712 } 1713 } else if (name.equals(TAG_DEVICE_POLICY_RESTRICTIONS)) { 1714 UserRestrictionsUtils.readRestrictions(parser, 1715 newDevicePolicyGlobalUserRestrictions); 1716 } else if (name.equals(TAG_GLOBAL_RESTRICTION_OWNER_ID)) { 1717 String ownerUserId = parser.getAttributeValue(null, ATTR_ID); 1718 if (ownerUserId != null) { 1719 mGlobalRestrictionOwnerUserId = Integer.parseInt(ownerUserId); 1720 } 1721 } 1722 } 1723 } 1724 synchronized (mRestrictionsLock) { 1725 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1726 } 1727 updateUserIds(); 1728 upgradeIfNecessaryLP(); 1729 } catch (IOException | XmlPullParserException e) { 1730 fallbackToSingleUserLP(); 1731 } finally { 1732 IoUtils.closeQuietly(fis); 1733 } 1734 } 1735 1736 /** 1737 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1738 */ 1739 private void upgradeIfNecessaryLP() { 1740 final int originalVersion = mUserVersion; 1741 int userVersion = mUserVersion; 1742 if (userVersion < 1) { 1743 // Assign a proper name for the owner, if not initialized correctly before 1744 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1745 if ("Primary".equals(userData.info.name)) { 1746 userData.info.name = 1747 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1748 scheduleWriteUser(userData); 1749 } 1750 userVersion = 1; 1751 } 1752 1753 if (userVersion < 2) { 1754 // Owner should be marked as initialized 1755 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1756 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1757 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1758 scheduleWriteUser(userData); 1759 } 1760 userVersion = 2; 1761 } 1762 1763 1764 if (userVersion < 4) { 1765 userVersion = 4; 1766 } 1767 1768 if (userVersion < 5) { 1769 initDefaultGuestRestrictions(); 1770 userVersion = 5; 1771 } 1772 1773 if (userVersion < 6) { 1774 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1775 synchronized (mUsersLock) { 1776 for (int i = 0; i < mUsers.size(); i++) { 1777 UserData userData = mUsers.valueAt(i); 1778 // In non-split mode, only user 0 can have restricted profiles 1779 if (!splitSystemUser && userData.info.isRestricted() 1780 && (userData.info.restrictedProfileParentId 1781 == UserInfo.NO_PROFILE_GROUP_ID)) { 1782 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1783 scheduleWriteUser(userData); 1784 } 1785 } 1786 } 1787 userVersion = 6; 1788 } 1789 1790 if (userVersion < USER_VERSION) { 1791 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1792 + USER_VERSION); 1793 } else { 1794 mUserVersion = userVersion; 1795 1796 if (originalVersion < mUserVersion) { 1797 writeUserListLP(); 1798 } 1799 } 1800 } 1801 1802 private void fallbackToSingleUserLP() { 1803 int flags = UserInfo.FLAG_INITIALIZED; 1804 // In split system user mode, the admin and primary flags are assigned to the first human 1805 // user. 1806 if (!UserManager.isSplitSystemUser()) { 1807 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1808 } 1809 // Create the system user 1810 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, null, null, flags); 1811 UserData userData = putUserInfo(system); 1812 mNextSerialNumber = MIN_USER_ID; 1813 mUserVersion = USER_VERSION; 1814 1815 Bundle restrictions = new Bundle(); 1816 try { 1817 final String[] defaultFirstUserRestrictions = mContext.getResources().getStringArray( 1818 com.android.internal.R.array.config_defaultFirstUserRestrictions); 1819 for (String userRestriction : defaultFirstUserRestrictions) { 1820 if (UserRestrictionsUtils.isValidRestriction(userRestriction)) { 1821 restrictions.putBoolean(userRestriction, true); 1822 } 1823 } 1824 } catch (Resources.NotFoundException e) { 1825 Log.e(LOG_TAG, "Couldn't find resource: config_defaultFirstUserRestrictions", e); 1826 } 1827 1828 synchronized (mRestrictionsLock) { 1829 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1830 } 1831 1832 updateUserIds(); 1833 initDefaultGuestRestrictions(); 1834 1835 writeUserLP(userData); 1836 writeUserListLP(); 1837 } 1838 1839 private String getOwnerName() { 1840 return mContext.getResources().getString(com.android.internal.R.string.owner_name); 1841 } 1842 1843 private void scheduleWriteUser(UserData UserData) { 1844 if (DBG) { 1845 debug("scheduleWriteUser"); 1846 } 1847 // No need to wrap it within a lock -- worst case, we'll just post the same message 1848 // twice. 1849 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1850 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1851 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1852 } 1853 } 1854 1855 /* 1856 * Writes the user file in this format: 1857 * 1858 * <user flags="20039023" id="0"> 1859 * <name>Primary</name> 1860 * </user> 1861 */ 1862 private void writeUserLP(UserData userData) { 1863 if (DBG) { 1864 debug("writeUserLP " + userData); 1865 } 1866 FileOutputStream fos = null; 1867 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1868 try { 1869 fos = userFile.startWrite(); 1870 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1871 1872 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1873 final XmlSerializer serializer = new FastXmlSerializer(); 1874 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1875 serializer.startDocument(null, true); 1876 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1877 1878 final UserInfo userInfo = userData.info; 1879 serializer.startTag(null, TAG_USER); 1880 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1881 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1882 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1883 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1884 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1885 Long.toString(userInfo.lastLoggedInTime)); 1886 if (userInfo.lastLoggedInFingerprint != null) { 1887 serializer.attribute(null, ATTR_LAST_LOGGED_IN_FINGERPRINT, 1888 userInfo.lastLoggedInFingerprint); 1889 } 1890 if (userInfo.iconPath != null) { 1891 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1892 } 1893 if (userInfo.partial) { 1894 serializer.attribute(null, ATTR_PARTIAL, "true"); 1895 } 1896 if (userInfo.guestToRemove) { 1897 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1898 } 1899 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1900 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1901 Integer.toString(userInfo.profileGroupId)); 1902 } 1903 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1904 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1905 Integer.toString(userInfo.restrictedProfileParentId)); 1906 } 1907 // Write seed data 1908 if (userData.persistSeedData) { 1909 if (userData.seedAccountName != null) { 1910 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 1911 } 1912 if (userData.seedAccountType != null) { 1913 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 1914 } 1915 } 1916 if (userInfo.name != null) { 1917 serializer.startTag(null, TAG_NAME); 1918 serializer.text(userInfo.name); 1919 serializer.endTag(null, TAG_NAME); 1920 } 1921 synchronized (mRestrictionsLock) { 1922 UserRestrictionsUtils.writeRestrictions(serializer, 1923 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1924 UserRestrictionsUtils.writeRestrictions(serializer, 1925 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1926 TAG_DEVICE_POLICY_RESTRICTIONS); 1927 } 1928 1929 if (userData.account != null) { 1930 serializer.startTag(null, TAG_ACCOUNT); 1931 serializer.text(userData.account); 1932 serializer.endTag(null, TAG_ACCOUNT); 1933 } 1934 1935 if (userData.persistSeedData && userData.seedAccountOptions != null) { 1936 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1937 userData.seedAccountOptions.saveToXml(serializer); 1938 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1939 } 1940 serializer.endTag(null, TAG_USER); 1941 1942 serializer.endDocument(); 1943 userFile.finishWrite(fos); 1944 } catch (Exception ioe) { 1945 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id, ioe); 1946 userFile.failWrite(fos); 1947 } 1948 } 1949 1950 /* 1951 * Writes the user list file in this format: 1952 * 1953 * <users nextSerialNumber="3"> 1954 * <user id="0"></user> 1955 * <user id="2"></user> 1956 * </users> 1957 */ 1958 private void writeUserListLP() { 1959 if (DBG) { 1960 debug("writeUserList"); 1961 } 1962 FileOutputStream fos = null; 1963 AtomicFile userListFile = new AtomicFile(mUserListFile); 1964 try { 1965 fos = userListFile.startWrite(); 1966 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1967 1968 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1969 final XmlSerializer serializer = new FastXmlSerializer(); 1970 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1971 serializer.startDocument(null, true); 1972 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1973 1974 serializer.startTag(null, TAG_USERS); 1975 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1976 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1977 1978 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1979 synchronized (mGuestRestrictions) { 1980 UserRestrictionsUtils 1981 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1982 } 1983 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1984 synchronized (mRestrictionsLock) { 1985 UserRestrictionsUtils.writeRestrictions(serializer, 1986 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1987 } 1988 serializer.startTag(null, TAG_GLOBAL_RESTRICTION_OWNER_ID); 1989 serializer.attribute(null, ATTR_ID, Integer.toString(mGlobalRestrictionOwnerUserId)); 1990 serializer.endTag(null, TAG_GLOBAL_RESTRICTION_OWNER_ID); 1991 int[] userIdsToWrite; 1992 synchronized (mUsersLock) { 1993 userIdsToWrite = new int[mUsers.size()]; 1994 for (int i = 0; i < userIdsToWrite.length; i++) { 1995 UserInfo user = mUsers.valueAt(i).info; 1996 userIdsToWrite[i] = user.id; 1997 } 1998 } 1999 for (int id : userIdsToWrite) { 2000 serializer.startTag(null, TAG_USER); 2001 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 2002 serializer.endTag(null, TAG_USER); 2003 } 2004 2005 serializer.endTag(null, TAG_USERS); 2006 2007 serializer.endDocument(); 2008 userListFile.finishWrite(fos); 2009 } catch (Exception e) { 2010 userListFile.failWrite(fos); 2011 Slog.e(LOG_TAG, "Error writing user list"); 2012 } 2013 } 2014 2015 private UserData readUserLP(int id) { 2016 int flags = 0; 2017 int serialNumber = id; 2018 String name = null; 2019 String account = null; 2020 String iconPath = null; 2021 long creationTime = 0L; 2022 long lastLoggedInTime = 0L; 2023 String lastLoggedInFingerprint = null; 2024 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 2025 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 2026 boolean partial = false; 2027 boolean guestToRemove = false; 2028 boolean persistSeedData = false; 2029 String seedAccountName = null; 2030 String seedAccountType = null; 2031 PersistableBundle seedAccountOptions = null; 2032 Bundle baseRestrictions = new Bundle(); 2033 Bundle localRestrictions = new Bundle(); 2034 2035 FileInputStream fis = null; 2036 try { 2037 AtomicFile userFile = 2038 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 2039 fis = userFile.openRead(); 2040 XmlPullParser parser = Xml.newPullParser(); 2041 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2042 int type; 2043 while ((type = parser.next()) != XmlPullParser.START_TAG 2044 && type != XmlPullParser.END_DOCUMENT) { 2045 // Skip 2046 } 2047 2048 if (type != XmlPullParser.START_TAG) { 2049 Slog.e(LOG_TAG, "Unable to read user " + id); 2050 return null; 2051 } 2052 2053 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 2054 int storedId = readIntAttribute(parser, ATTR_ID, -1); 2055 if (storedId != id) { 2056 Slog.e(LOG_TAG, "User id does not match the file name"); 2057 return null; 2058 } 2059 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 2060 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 2061 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 2062 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 2063 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 2064 lastLoggedInFingerprint = parser.getAttributeValue(null, 2065 ATTR_LAST_LOGGED_IN_FINGERPRINT); 2066 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 2067 UserInfo.NO_PROFILE_GROUP_ID); 2068 restrictedProfileParentId = readIntAttribute(parser, 2069 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 2070 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 2071 if ("true".equals(valueString)) { 2072 partial = true; 2073 } 2074 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 2075 if ("true".equals(valueString)) { 2076 guestToRemove = true; 2077 } 2078 2079 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 2080 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 2081 if (seedAccountName != null || seedAccountType != null) { 2082 persistSeedData = true; 2083 } 2084 2085 int outerDepth = parser.getDepth(); 2086 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 2087 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2088 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2089 continue; 2090 } 2091 String tag = parser.getName(); 2092 if (TAG_NAME.equals(tag)) { 2093 type = parser.next(); 2094 if (type == XmlPullParser.TEXT) { 2095 name = parser.getText(); 2096 } 2097 } else if (TAG_RESTRICTIONS.equals(tag)) { 2098 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 2099 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 2100 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 2101 } else if (TAG_ACCOUNT.equals(tag)) { 2102 type = parser.next(); 2103 if (type == XmlPullParser.TEXT) { 2104 account = parser.getText(); 2105 } 2106 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 2107 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 2108 persistSeedData = true; 2109 } 2110 } 2111 } 2112 2113 // Create the UserInfo object that gets passed around 2114 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 2115 userInfo.serialNumber = serialNumber; 2116 userInfo.creationTime = creationTime; 2117 userInfo.lastLoggedInTime = lastLoggedInTime; 2118 userInfo.lastLoggedInFingerprint = lastLoggedInFingerprint; 2119 userInfo.partial = partial; 2120 userInfo.guestToRemove = guestToRemove; 2121 userInfo.profileGroupId = profileGroupId; 2122 userInfo.restrictedProfileParentId = restrictedProfileParentId; 2123 2124 // Create the UserData object that's internal to this class 2125 UserData userData = new UserData(); 2126 userData.info = userInfo; 2127 userData.account = account; 2128 userData.seedAccountName = seedAccountName; 2129 userData.seedAccountType = seedAccountType; 2130 userData.persistSeedData = persistSeedData; 2131 userData.seedAccountOptions = seedAccountOptions; 2132 2133 synchronized (mRestrictionsLock) { 2134 mBaseUserRestrictions.put(id, baseRestrictions); 2135 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 2136 } 2137 return userData; 2138 } catch (IOException ioe) { 2139 } catch (XmlPullParserException pe) { 2140 } finally { 2141 if (fis != null) { 2142 try { 2143 fis.close(); 2144 } catch (IOException e) { 2145 } 2146 } 2147 } 2148 return null; 2149 } 2150 2151 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 2152 String valueString = parser.getAttributeValue(null, attr); 2153 if (valueString == null) return defaultValue; 2154 try { 2155 return Integer.parseInt(valueString); 2156 } catch (NumberFormatException nfe) { 2157 return defaultValue; 2158 } 2159 } 2160 2161 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 2162 String valueString = parser.getAttributeValue(null, attr); 2163 if (valueString == null) return defaultValue; 2164 try { 2165 return Long.parseLong(valueString); 2166 } catch (NumberFormatException nfe) { 2167 return defaultValue; 2168 } 2169 } 2170 2171 /** 2172 * Removes the app restrictions file for a specific package and user id, if it exists. 2173 */ 2174 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 2175 synchronized (mPackagesLock) { 2176 File dir = Environment.getUserSystemDirectory(userId); 2177 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 2178 if (resFile.exists()) { 2179 resFile.delete(); 2180 } 2181 } 2182 } 2183 2184 @Override 2185 public UserInfo createProfileForUser(String name, int flags, int userId, 2186 String[] disallowedPackages) { 2187 checkManageOrCreateUsersPermission(flags); 2188 return createUserInternal(name, flags, userId, disallowedPackages); 2189 } 2190 2191 @Override 2192 public UserInfo createUser(String name, int flags) { 2193 checkManageOrCreateUsersPermission(flags); 2194 return createUserInternal(name, flags, UserHandle.USER_NULL); 2195 } 2196 2197 private UserInfo createUserInternal(String name, int flags, int parentId) { 2198 return createUserInternal(name, flags, parentId, null); 2199 } 2200 2201 private UserInfo createUserInternal(String name, int flags, int parentId, 2202 String[] disallowedPackages) { 2203 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 2204 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 2205 return null; 2206 } 2207 DeviceStorageMonitorInternal dsm = LocalServices 2208 .getService(DeviceStorageMonitorInternal.class); 2209 if (dsm.isMemoryLow()) { 2210 Log.w(LOG_TAG, "Cannot add user. Not enough space on disk."); 2211 return null; 2212 } 2213 return createUserInternalUnchecked(name, flags, parentId, disallowedPackages); 2214 } 2215 2216 private UserInfo createUserInternalUnchecked(String name, int flags, int parentId, 2217 String[] disallowedPackages) { 2218 if (ActivityManager.isLowRamDeviceStatic()) { 2219 return null; 2220 } 2221 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 2222 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 2223 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 2224 final boolean isDemo = (flags & UserInfo.FLAG_DEMO) != 0; 2225 final long ident = Binder.clearCallingIdentity(); 2226 UserInfo userInfo; 2227 UserData userData; 2228 final int userId; 2229 try { 2230 synchronized (mPackagesLock) { 2231 UserData parent = null; 2232 if (parentId != UserHandle.USER_NULL) { 2233 synchronized (mUsersLock) { 2234 parent = getUserDataLU(parentId); 2235 } 2236 if (parent == null) return null; 2237 } 2238 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 2239 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 2240 return null; 2241 } 2242 if (!isGuest && !isManagedProfile && !isDemo && isUserLimitReached()) { 2243 // If we're not adding a guest/demo user or a managed profile and the limit has 2244 // been reached, cannot add a user. 2245 return null; 2246 } 2247 // If we're adding a guest and there already exists one, bail. 2248 if (isGuest && findCurrentGuestUser() != null) { 2249 return null; 2250 } 2251 // In legacy mode, restricted profile's parent can only be the owner user 2252 if (isRestricted && !UserManager.isSplitSystemUser() 2253 && (parentId != UserHandle.USER_SYSTEM)) { 2254 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 2255 return null; 2256 } 2257 if (isRestricted && UserManager.isSplitSystemUser()) { 2258 if (parent == null) { 2259 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 2260 + "specified"); 2261 return null; 2262 } 2263 if (!parent.info.canHaveProfile()) { 2264 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 2265 + "created for the specified parent user id " + parentId); 2266 return null; 2267 } 2268 } 2269 if (!UserManager.isSplitSystemUser() && (flags & UserInfo.FLAG_EPHEMERAL) != 0 2270 && (flags & UserInfo.FLAG_DEMO) == 0) { 2271 Log.e(LOG_TAG, 2272 "Ephemeral users are supported on split-system-user systems only."); 2273 return null; 2274 } 2275 // In split system user mode, we assign the first human user the primary flag. 2276 // And if there is no device owner, we also assign the admin flag to primary user. 2277 if (UserManager.isSplitSystemUser() 2278 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 2279 flags |= UserInfo.FLAG_PRIMARY; 2280 synchronized (mUsersLock) { 2281 if (!mIsDeviceManaged) { 2282 flags |= UserInfo.FLAG_ADMIN; 2283 } 2284 } 2285 } 2286 2287 userId = getNextAvailableId(); 2288 Environment.getUserSystemDirectory(userId).mkdirs(); 2289 boolean ephemeralGuests = Resources.getSystem() 2290 .getBoolean(com.android.internal.R.bool.config_guestUserEphemeral); 2291 2292 synchronized (mUsersLock) { 2293 // Add ephemeral flag to guests/users if required. Also inherit it from parent. 2294 if ((isGuest && ephemeralGuests) || mForceEphemeralUsers 2295 || (parent != null && parent.info.isEphemeral())) { 2296 flags |= UserInfo.FLAG_EPHEMERAL; 2297 } 2298 2299 userInfo = new UserInfo(userId, name, null, flags); 2300 userInfo.serialNumber = mNextSerialNumber++; 2301 long now = System.currentTimeMillis(); 2302 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 2303 userInfo.partial = true; 2304 userInfo.lastLoggedInFingerprint = Build.FINGERPRINT; 2305 userData = new UserData(); 2306 userData.info = userInfo; 2307 mUsers.put(userId, userData); 2308 } 2309 writeUserLP(userData); 2310 writeUserListLP(); 2311 if (parent != null) { 2312 if (isManagedProfile) { 2313 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 2314 parent.info.profileGroupId = parent.info.id; 2315 writeUserLP(parent); 2316 } 2317 userInfo.profileGroupId = parent.info.profileGroupId; 2318 } else if (isRestricted) { 2319 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 2320 parent.info.restrictedProfileParentId = parent.info.id; 2321 writeUserLP(parent); 2322 } 2323 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 2324 } 2325 } 2326 } 2327 final StorageManager storage = mContext.getSystemService(StorageManager.class); 2328 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 2329 mPm.prepareUserData(userId, userInfo.serialNumber, 2330 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 2331 mPm.createNewUser(userId, disallowedPackages); 2332 userInfo.partial = false; 2333 synchronized (mPackagesLock) { 2334 writeUserLP(userData); 2335 } 2336 updateUserIds(); 2337 Bundle restrictions = new Bundle(); 2338 if (isGuest) { 2339 synchronized (mGuestRestrictions) { 2340 restrictions.putAll(mGuestRestrictions); 2341 } 2342 } 2343 synchronized (mRestrictionsLock) { 2344 mBaseUserRestrictions.append(userId, restrictions); 2345 } 2346 mPm.onNewUserCreated(userId); 2347 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 2348 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 2349 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 2350 android.Manifest.permission.MANAGE_USERS); 2351 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 2352 } finally { 2353 Binder.restoreCallingIdentity(ident); 2354 } 2355 return userInfo; 2356 } 2357 2358 @VisibleForTesting 2359 UserData putUserInfo(UserInfo userInfo) { 2360 final UserData userData = new UserData(); 2361 userData.info = userInfo; 2362 synchronized (mUsers) { 2363 mUsers.put(userInfo.id, userData); 2364 } 2365 return userData; 2366 } 2367 2368 @VisibleForTesting 2369 void removeUserInfo(int userId) { 2370 synchronized (mUsers) { 2371 mUsers.remove(userId); 2372 } 2373 } 2374 2375 /** 2376 * @hide 2377 */ 2378 @Override 2379 public UserInfo createRestrictedProfile(String name, int parentUserId) { 2380 checkManageOrCreateUsersPermission("setupRestrictedProfile"); 2381 final UserInfo user = createProfileForUser( 2382 name, UserInfo.FLAG_RESTRICTED, parentUserId, null); 2383 if (user == null) { 2384 return null; 2385 } 2386 long identity = Binder.clearCallingIdentity(); 2387 try { 2388 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 2389 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 2390 // the putIntForUser() will fail. 2391 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 2392 android.provider.Settings.Secure.LOCATION_MODE, 2393 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 2394 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 2395 } finally { 2396 Binder.restoreCallingIdentity(identity); 2397 } 2398 return user; 2399 } 2400 2401 /** 2402 * Find the current guest user. If the Guest user is partial, 2403 * then do not include it in the results as it is about to die. 2404 */ 2405 private UserInfo findCurrentGuestUser() { 2406 synchronized (mUsersLock) { 2407 final int size = mUsers.size(); 2408 for (int i = 0; i < size; i++) { 2409 final UserInfo user = mUsers.valueAt(i).info; 2410 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 2411 return user; 2412 } 2413 } 2414 } 2415 return null; 2416 } 2417 2418 /** 2419 * Mark this guest user for deletion to allow us to create another guest 2420 * and switch to that user before actually removing this guest. 2421 * @param userHandle the userid of the current guest 2422 * @return whether the user could be marked for deletion 2423 */ 2424 @Override 2425 public boolean markGuestForDeletion(int userHandle) { 2426 checkManageUsersPermission("Only the system can remove users"); 2427 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2428 UserManager.DISALLOW_REMOVE_USER, false)) { 2429 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2430 return false; 2431 } 2432 2433 long ident = Binder.clearCallingIdentity(); 2434 try { 2435 final UserData userData; 2436 synchronized (mPackagesLock) { 2437 synchronized (mUsersLock) { 2438 userData = mUsers.get(userHandle); 2439 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2440 return false; 2441 } 2442 } 2443 if (!userData.info.isGuest()) { 2444 return false; 2445 } 2446 // We set this to a guest user that is to be removed. This is a temporary state 2447 // where we are allowed to add new Guest users, even if this one is still not 2448 // removed. This user will still show up in getUserInfo() calls. 2449 // If we don't get around to removing this Guest user, it will be purged on next 2450 // startup. 2451 userData.info.guestToRemove = true; 2452 // Mark it as disabled, so that it isn't returned any more when 2453 // profiles are queried. 2454 userData.info.flags |= UserInfo.FLAG_DISABLED; 2455 writeUserLP(userData); 2456 } 2457 } finally { 2458 Binder.restoreCallingIdentity(ident); 2459 } 2460 return true; 2461 } 2462 2463 /** 2464 * Removes a user and all data directories created for that user. This method should be called 2465 * after the user's processes have been terminated. 2466 * @param userHandle the user's id 2467 */ 2468 @Override 2469 public boolean removeUser(int userHandle) { 2470 checkManageOrCreateUsersPermission("Only the system can remove users"); 2471 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2472 UserManager.DISALLOW_REMOVE_USER, false)) { 2473 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2474 return false; 2475 } 2476 2477 long ident = Binder.clearCallingIdentity(); 2478 try { 2479 final UserData userData; 2480 int currentUser = ActivityManager.getCurrentUser(); 2481 if (currentUser == userHandle) { 2482 Log.w(LOG_TAG, "Current user cannot be removed"); 2483 return false; 2484 } 2485 synchronized (mPackagesLock) { 2486 synchronized (mUsersLock) { 2487 userData = mUsers.get(userHandle); 2488 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2489 return false; 2490 } 2491 2492 addRemovingUserIdLocked(userHandle); 2493 } 2494 2495 try { 2496 mAppOpsService.removeUser(userHandle); 2497 } catch (RemoteException e) { 2498 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2499 } 2500 // Set this to a partially created user, so that the user will be purged 2501 // on next startup, in case the runtime stops now before stopping and 2502 // removing the user completely. 2503 userData.info.partial = true; 2504 // Mark it as disabled, so that it isn't returned any more when 2505 // profiles are queried. 2506 userData.info.flags |= UserInfo.FLAG_DISABLED; 2507 writeUserLP(userData); 2508 } 2509 2510 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2511 && userData.info.isManagedProfile()) { 2512 // Send broadcast to notify system that the user removed was a 2513 // managed user. 2514 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2515 } 2516 2517 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2518 int res; 2519 try { 2520 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 2521 new IStopUserCallback.Stub() { 2522 @Override 2523 public void userStopped(int userId) { 2524 finishRemoveUser(userId); 2525 } 2526 @Override 2527 public void userStopAborted(int userId) { 2528 } 2529 }); 2530 } catch (RemoteException e) { 2531 return false; 2532 } 2533 return res == ActivityManager.USER_OP_SUCCESS; 2534 } finally { 2535 Binder.restoreCallingIdentity(ident); 2536 } 2537 } 2538 2539 @VisibleForTesting 2540 void addRemovingUserIdLocked(int userId) { 2541 // We remember deleted user IDs to prevent them from being 2542 // reused during the current boot; they can still be reused 2543 // after a reboot or recycling of userIds. 2544 mRemovingUserIds.put(userId, true); 2545 mRecentlyRemovedIds.add(userId); 2546 // Keep LRU queue of recently removed IDs for recycling 2547 if (mRecentlyRemovedIds.size() > MAX_RECENTLY_REMOVED_IDS_SIZE) { 2548 mRecentlyRemovedIds.removeFirst(); 2549 } 2550 } 2551 2552 void finishRemoveUser(final int userHandle) { 2553 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2554 // Let other services shutdown any activity and clean up their state before completely 2555 // wiping the user's system directory and removing from the user list 2556 long ident = Binder.clearCallingIdentity(); 2557 try { 2558 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2559 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2560 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2561 android.Manifest.permission.MANAGE_USERS, 2562 2563 new BroadcastReceiver() { 2564 @Override 2565 public void onReceive(Context context, Intent intent) { 2566 if (DBG) { 2567 Slog.i(LOG_TAG, 2568 "USER_REMOVED broadcast sent, cleaning up user data " 2569 + userHandle); 2570 } 2571 new Thread() { 2572 @Override 2573 public void run() { 2574 // Clean up any ActivityManager state 2575 LocalServices.getService(ActivityManagerInternal.class) 2576 .onUserRemoved(userHandle); 2577 removeUserState(userHandle); 2578 } 2579 }.start(); 2580 } 2581 }, 2582 2583 null, Activity.RESULT_OK, null, null); 2584 } finally { 2585 Binder.restoreCallingIdentity(ident); 2586 } 2587 } 2588 2589 private void removeUserState(final int userHandle) { 2590 try { 2591 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2592 } catch (IllegalStateException e) { 2593 // This may be simply because the user was partially created. 2594 Slog.i(LOG_TAG, 2595 "Destroying key for user " + userHandle + " failed, continuing anyway", e); 2596 } 2597 2598 // Cleanup gatekeeper secure user id 2599 try { 2600 final IGateKeeperService gk = GateKeeper.getService(); 2601 if (gk != null) { 2602 gk.clearSecureUserId(userHandle); 2603 } 2604 } catch (Exception ex) { 2605 Slog.w(LOG_TAG, "unable to clear GK secure user id"); 2606 } 2607 2608 // Cleanup package manager settings 2609 mPm.cleanUpUser(this, userHandle); 2610 2611 // Clean up all data before removing metadata 2612 mPm.destroyUserData(userHandle, 2613 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 2614 2615 // Remove this user from the list 2616 synchronized (mUsersLock) { 2617 mUsers.remove(userHandle); 2618 mIsUserManaged.delete(userHandle); 2619 } 2620 synchronized (mUserStates) { 2621 mUserStates.delete(userHandle); 2622 } 2623 synchronized (mRestrictionsLock) { 2624 mBaseUserRestrictions.remove(userHandle); 2625 mAppliedUserRestrictions.remove(userHandle); 2626 mCachedEffectiveUserRestrictions.remove(userHandle); 2627 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2628 } 2629 // Update the user list 2630 synchronized (mPackagesLock) { 2631 writeUserListLP(); 2632 } 2633 // Remove user file 2634 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2635 userFile.delete(); 2636 updateUserIds(); 2637 if (RELEASE_DELETED_USER_ID) { 2638 synchronized (mUsers) { 2639 mRemovingUserIds.delete(userHandle); 2640 } 2641 } 2642 } 2643 2644 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2645 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2646 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2647 Intent.FLAG_RECEIVER_FOREGROUND); 2648 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2649 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2650 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2651 } 2652 2653 @Override 2654 public Bundle getApplicationRestrictions(String packageName) { 2655 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2656 } 2657 2658 @Override 2659 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2660 if (UserHandle.getCallingUserId() != userId 2661 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2662 checkSystemOrRoot("get application restrictions for other users/apps"); 2663 } 2664 synchronized (mPackagesLock) { 2665 // Read the restrictions from XML 2666 return readApplicationRestrictionsLP(packageName, userId); 2667 } 2668 } 2669 2670 @Override 2671 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2672 int userId) { 2673 checkSystemOrRoot("set application restrictions"); 2674 if (restrictions != null) { 2675 restrictions.setDefusable(true); 2676 } 2677 synchronized (mPackagesLock) { 2678 if (restrictions == null || restrictions.isEmpty()) { 2679 cleanAppRestrictionsForPackage(packageName, userId); 2680 } else { 2681 // Write the restrictions to XML 2682 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2683 } 2684 } 2685 2686 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2687 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2688 changeIntent.setPackage(packageName); 2689 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2690 mContext.sendBroadcastAsUser(changeIntent, UserHandle.of(userId)); 2691 } 2692 2693 private int getUidForPackage(String packageName) { 2694 long ident = Binder.clearCallingIdentity(); 2695 try { 2696 return mContext.getPackageManager().getApplicationInfo(packageName, 2697 PackageManager.MATCH_UNINSTALLED_PACKAGES).uid; 2698 } catch (NameNotFoundException nnfe) { 2699 return -1; 2700 } finally { 2701 Binder.restoreCallingIdentity(ident); 2702 } 2703 } 2704 2705 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2706 AtomicFile restrictionsFile = 2707 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2708 packageToRestrictionsFileName(packageName))); 2709 return readApplicationRestrictionsLP(restrictionsFile); 2710 } 2711 2712 @VisibleForTesting 2713 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2714 final Bundle restrictions = new Bundle(); 2715 final ArrayList<String> values = new ArrayList<>(); 2716 if (!restrictionsFile.getBaseFile().exists()) { 2717 return restrictions; 2718 } 2719 2720 FileInputStream fis = null; 2721 try { 2722 fis = restrictionsFile.openRead(); 2723 XmlPullParser parser = Xml.newPullParser(); 2724 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2725 XmlUtils.nextElement(parser); 2726 if (parser.getEventType() != XmlPullParser.START_TAG) { 2727 Slog.e(LOG_TAG, "Unable to read restrictions file " 2728 + restrictionsFile.getBaseFile()); 2729 return restrictions; 2730 } 2731 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2732 readEntry(restrictions, values, parser); 2733 } 2734 } catch (IOException|XmlPullParserException e) { 2735 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2736 } finally { 2737 IoUtils.closeQuietly(fis); 2738 } 2739 return restrictions; 2740 } 2741 2742 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2743 XmlPullParser parser) throws XmlPullParserException, IOException { 2744 int type = parser.getEventType(); 2745 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2746 String key = parser.getAttributeValue(null, ATTR_KEY); 2747 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2748 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2749 if (multiple != null) { 2750 values.clear(); 2751 int count = Integer.parseInt(multiple); 2752 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2753 if (type == XmlPullParser.START_TAG 2754 && parser.getName().equals(TAG_VALUE)) { 2755 values.add(parser.nextText().trim()); 2756 count--; 2757 } 2758 } 2759 String [] valueStrings = new String[values.size()]; 2760 values.toArray(valueStrings); 2761 restrictions.putStringArray(key, valueStrings); 2762 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2763 restrictions.putBundle(key, readBundleEntry(parser, values)); 2764 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2765 final int outerDepth = parser.getDepth(); 2766 ArrayList<Bundle> bundleList = new ArrayList<>(); 2767 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2768 Bundle childBundle = readBundleEntry(parser, values); 2769 bundleList.add(childBundle); 2770 } 2771 restrictions.putParcelableArray(key, 2772 bundleList.toArray(new Bundle[bundleList.size()])); 2773 } else { 2774 String value = parser.nextText().trim(); 2775 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2776 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2777 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2778 restrictions.putInt(key, Integer.parseInt(value)); 2779 } else { 2780 restrictions.putString(key, value); 2781 } 2782 } 2783 } 2784 } 2785 2786 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2787 throws IOException, XmlPullParserException { 2788 Bundle childBundle = new Bundle(); 2789 final int outerDepth = parser.getDepth(); 2790 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2791 readEntry(childBundle, values, parser); 2792 } 2793 return childBundle; 2794 } 2795 2796 private void writeApplicationRestrictionsLP(String packageName, 2797 Bundle restrictions, int userId) { 2798 AtomicFile restrictionsFile = new AtomicFile( 2799 new File(Environment.getUserSystemDirectory(userId), 2800 packageToRestrictionsFileName(packageName))); 2801 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2802 } 2803 2804 @VisibleForTesting 2805 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2806 FileOutputStream fos = null; 2807 try { 2808 fos = restrictionsFile.startWrite(); 2809 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2810 2811 final XmlSerializer serializer = new FastXmlSerializer(); 2812 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2813 serializer.startDocument(null, true); 2814 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2815 2816 serializer.startTag(null, TAG_RESTRICTIONS); 2817 writeBundle(restrictions, serializer); 2818 serializer.endTag(null, TAG_RESTRICTIONS); 2819 2820 serializer.endDocument(); 2821 restrictionsFile.finishWrite(fos); 2822 } catch (Exception e) { 2823 restrictionsFile.failWrite(fos); 2824 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2825 } 2826 } 2827 2828 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2829 throws IOException { 2830 for (String key : restrictions.keySet()) { 2831 Object value = restrictions.get(key); 2832 serializer.startTag(null, TAG_ENTRY); 2833 serializer.attribute(null, ATTR_KEY, key); 2834 2835 if (value instanceof Boolean) { 2836 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2837 serializer.text(value.toString()); 2838 } else if (value instanceof Integer) { 2839 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2840 serializer.text(value.toString()); 2841 } else if (value == null || value instanceof String) { 2842 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2843 serializer.text(value != null ? (String) value : ""); 2844 } else if (value instanceof Bundle) { 2845 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2846 writeBundle((Bundle) value, serializer); 2847 } else if (value instanceof Parcelable[]) { 2848 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2849 Parcelable[] array = (Parcelable[]) value; 2850 for (Parcelable parcelable : array) { 2851 if (!(parcelable instanceof Bundle)) { 2852 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2853 } 2854 serializer.startTag(null, TAG_ENTRY); 2855 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2856 writeBundle((Bundle) parcelable, serializer); 2857 serializer.endTag(null, TAG_ENTRY); 2858 } 2859 } else { 2860 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2861 String[] values = (String[]) value; 2862 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2863 for (String choice : values) { 2864 serializer.startTag(null, TAG_VALUE); 2865 serializer.text(choice != null ? choice : ""); 2866 serializer.endTag(null, TAG_VALUE); 2867 } 2868 } 2869 serializer.endTag(null, TAG_ENTRY); 2870 } 2871 } 2872 2873 @Override 2874 public int getUserSerialNumber(int userHandle) { 2875 synchronized (mUsersLock) { 2876 if (!exists(userHandle)) return -1; 2877 return getUserInfoLU(userHandle).serialNumber; 2878 } 2879 } 2880 2881 @Override 2882 public int getUserHandle(int userSerialNumber) { 2883 synchronized (mUsersLock) { 2884 for (int userId : mUserIds) { 2885 UserInfo info = getUserInfoLU(userId); 2886 if (info != null && info.serialNumber == userSerialNumber) return userId; 2887 } 2888 // Not found 2889 return -1; 2890 } 2891 } 2892 2893 @Override 2894 public long getUserCreationTime(int userHandle) { 2895 int callingUserId = UserHandle.getCallingUserId(); 2896 UserInfo userInfo = null; 2897 synchronized (mUsersLock) { 2898 if (callingUserId == userHandle) { 2899 userInfo = getUserInfoLU(userHandle); 2900 } else { 2901 UserInfo parent = getProfileParentLU(userHandle); 2902 if (parent != null && parent.id == callingUserId) { 2903 userInfo = getUserInfoLU(userHandle); 2904 } 2905 } 2906 } 2907 if (userInfo == null) { 2908 throw new SecurityException("userHandle can only be the calling user or a managed " 2909 + "profile associated with this user"); 2910 } 2911 return userInfo.creationTime; 2912 } 2913 2914 /** 2915 * Caches the list of user ids in an array, adjusting the array size when necessary. 2916 */ 2917 private void updateUserIds() { 2918 int num = 0; 2919 synchronized (mUsersLock) { 2920 final int userSize = mUsers.size(); 2921 for (int i = 0; i < userSize; i++) { 2922 if (!mUsers.valueAt(i).info.partial) { 2923 num++; 2924 } 2925 } 2926 final int[] newUsers = new int[num]; 2927 int n = 0; 2928 for (int i = 0; i < userSize; i++) { 2929 if (!mUsers.valueAt(i).info.partial) { 2930 newUsers[n++] = mUsers.keyAt(i); 2931 } 2932 } 2933 mUserIds = newUsers; 2934 } 2935 } 2936 2937 /** 2938 * Called right before a user is started. This gives us a chance to prepare 2939 * app storage and apply any user restrictions. 2940 */ 2941 public void onBeforeStartUser(int userId) { 2942 UserInfo userInfo = getUserInfo(userId); 2943 if (userInfo == null) { 2944 return; 2945 } 2946 final int userSerial = userInfo.serialNumber; 2947 // Migrate only if build fingerprints mismatch 2948 boolean migrateAppsData = !Build.FINGERPRINT.equals(userInfo.lastLoggedInFingerprint); 2949 mPm.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_DE); 2950 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_DE, migrateAppsData); 2951 2952 if (userId != UserHandle.USER_SYSTEM) { 2953 synchronized (mRestrictionsLock) { 2954 applyUserRestrictionsLR(userId); 2955 } 2956 } 2957 2958 maybeInitializeDemoMode(userId); 2959 } 2960 2961 /** 2962 * Called right before a user is unlocked. This gives us a chance to prepare 2963 * app storage. 2964 */ 2965 public void onBeforeUnlockUser(@UserIdInt int userId) { 2966 UserInfo userInfo = getUserInfo(userId); 2967 if (userInfo == null) { 2968 return; 2969 } 2970 final int userSerial = userInfo.serialNumber; 2971 // Migrate only if build fingerprints mismatch 2972 boolean migrateAppsData = !Build.FINGERPRINT.equals(userInfo.lastLoggedInFingerprint); 2973 mPm.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_CE); 2974 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_CE, migrateAppsData); 2975 } 2976 2977 /** 2978 * Make a note of the last started time of a user and do some cleanup. 2979 * This is called with ActivityManagerService lock held. 2980 * @param userId the user that was just foregrounded 2981 */ 2982 public void onUserLoggedIn(@UserIdInt int userId) { 2983 UserData userData = getUserDataNoChecks(userId); 2984 if (userData == null || userData.info.partial) { 2985 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2986 return; 2987 } 2988 2989 final long now = System.currentTimeMillis(); 2990 if (now > EPOCH_PLUS_30_YEARS) { 2991 userData.info.lastLoggedInTime = now; 2992 } 2993 userData.info.lastLoggedInFingerprint = Build.FINGERPRINT; 2994 scheduleWriteUser(userData); 2995 } 2996 2997 private void maybeInitializeDemoMode(int userId) { 2998 if (UserManager.isDeviceInDemoMode(mContext) && userId != UserHandle.USER_SYSTEM) { 2999 String demoLauncher = 3000 mContext.getResources().getString( 3001 com.android.internal.R.string.config_demoModeLauncherComponent); 3002 if (!TextUtils.isEmpty(demoLauncher)) { 3003 ComponentName componentToEnable = ComponentName.unflattenFromString(demoLauncher); 3004 String demoLauncherPkg = componentToEnable.getPackageName(); 3005 try { 3006 final IPackageManager iPm = AppGlobals.getPackageManager(); 3007 iPm.setComponentEnabledSetting(componentToEnable, 3008 PackageManager.COMPONENT_ENABLED_STATE_ENABLED, /* flags= */ 0, 3009 /* userId= */ userId); 3010 iPm.setApplicationEnabledSetting(demoLauncherPkg, 3011 PackageManager.COMPONENT_ENABLED_STATE_ENABLED, /* flags= */ 0, 3012 /* userId= */ userId, null); 3013 } catch (RemoteException re) { 3014 // Internal, shouldn't happen 3015 } 3016 } 3017 } 3018 } 3019 3020 /** 3021 * Returns the next available user id, filling in any holes in the ids. 3022 */ 3023 @VisibleForTesting 3024 int getNextAvailableId() { 3025 int nextId; 3026 synchronized (mUsersLock) { 3027 nextId = scanNextAvailableIdLocked(); 3028 if (nextId >= 0) { 3029 return nextId; 3030 } 3031 // All ids up to MAX_USER_ID were used. Remove all mRemovingUserIds, 3032 // except most recently removed 3033 if (mRemovingUserIds.size() > 0) { 3034 Slog.i(LOG_TAG, "All available IDs are used. Recycling LRU ids."); 3035 mRemovingUserIds.clear(); 3036 for (Integer recentlyRemovedId : mRecentlyRemovedIds) { 3037 mRemovingUserIds.put(recentlyRemovedId, true); 3038 } 3039 nextId = scanNextAvailableIdLocked(); 3040 } 3041 } 3042 if (nextId < 0) { 3043 throw new IllegalStateException("No user id available!"); 3044 } 3045 return nextId; 3046 } 3047 3048 private int scanNextAvailableIdLocked() { 3049 for (int i = MIN_USER_ID; i < MAX_USER_ID; i++) { 3050 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 3051 return i; 3052 } 3053 } 3054 return -1; 3055 } 3056 3057 private String packageToRestrictionsFileName(String packageName) { 3058 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 3059 } 3060 3061 /** 3062 * Enforce that serial number stored in user directory inode matches the 3063 * given expected value. Gracefully sets the serial number if currently 3064 * undefined. 3065 * 3066 * @throws IOException when problem extracting serial number, or serial 3067 * number is mismatched. 3068 */ 3069 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 3070 if (StorageManager.isFileEncryptedEmulatedOnly()) { 3071 // When we're emulating FBE, the directory may have been chmod 3072 // 000'ed, meaning we can't read the serial number to enforce it; 3073 // instead of destroying the user, just log a warning. 3074 Slog.w(LOG_TAG, "Device is emulating FBE; assuming current serial number is valid"); 3075 return; 3076 } 3077 3078 final int foundSerial = getSerialNumber(file); 3079 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 3080 3081 if (foundSerial == -1) { 3082 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 3083 try { 3084 setSerialNumber(file, serialNumber); 3085 } catch (IOException e) { 3086 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 3087 } 3088 3089 } else if (foundSerial != serialNumber) { 3090 throw new IOException("Found serial number " + foundSerial 3091 + " doesn't match expected " + serialNumber); 3092 } 3093 } 3094 3095 /** 3096 * Set serial number stored in user directory inode. 3097 * 3098 * @throws IOException if serial number was already set 3099 */ 3100 private static void setSerialNumber(File file, int serialNumber) 3101 throws IOException { 3102 try { 3103 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 3104 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 3105 } catch (ErrnoException e) { 3106 throw e.rethrowAsIOException(); 3107 } 3108 } 3109 3110 /** 3111 * Return serial number stored in user directory inode. 3112 * 3113 * @return parsed serial number, or -1 if not set 3114 */ 3115 private static int getSerialNumber(File file) throws IOException { 3116 try { 3117 final byte[] buf = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL); 3118 final String serial = new String(buf); 3119 try { 3120 return Integer.parseInt(serial); 3121 } catch (NumberFormatException e) { 3122 throw new IOException("Bad serial number: " + serial); 3123 } 3124 } catch (ErrnoException e) { 3125 if (e.errno == OsConstants.ENODATA) { 3126 return -1; 3127 } else { 3128 throw e.rethrowAsIOException(); 3129 } 3130 } 3131 } 3132 3133 @Override 3134 public void setSeedAccountData(int userId, String accountName, String accountType, 3135 PersistableBundle accountOptions, boolean persist) { 3136 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 3137 synchronized (mPackagesLock) { 3138 final UserData userData; 3139 synchronized (mUsersLock) { 3140 userData = getUserDataLU(userId); 3141 if (userData == null) { 3142 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 3143 return; 3144 } 3145 userData.seedAccountName = accountName; 3146 userData.seedAccountType = accountType; 3147 userData.seedAccountOptions = accountOptions; 3148 userData.persistSeedData = persist; 3149 } 3150 if (persist) { 3151 writeUserLP(userData); 3152 } 3153 } 3154 } 3155 3156 @Override 3157 public String getSeedAccountName() throws RemoteException { 3158 checkManageUsersPermission("Cannot get seed account information"); 3159 synchronized (mUsersLock) { 3160 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3161 return userData.seedAccountName; 3162 } 3163 } 3164 3165 @Override 3166 public String getSeedAccountType() throws RemoteException { 3167 checkManageUsersPermission("Cannot get seed account information"); 3168 synchronized (mUsersLock) { 3169 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3170 return userData.seedAccountType; 3171 } 3172 } 3173 3174 @Override 3175 public PersistableBundle getSeedAccountOptions() throws RemoteException { 3176 checkManageUsersPermission("Cannot get seed account information"); 3177 synchronized (mUsersLock) { 3178 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3179 return userData.seedAccountOptions; 3180 } 3181 } 3182 3183 @Override 3184 public void clearSeedAccountData() throws RemoteException { 3185 checkManageUsersPermission("Cannot clear seed account information"); 3186 synchronized (mPackagesLock) { 3187 UserData userData; 3188 synchronized (mUsersLock) { 3189 userData = getUserDataLU(UserHandle.getCallingUserId()); 3190 if (userData == null) return; 3191 userData.clearSeedAccountData(); 3192 } 3193 writeUserLP(userData); 3194 } 3195 } 3196 3197 @Override 3198 public boolean someUserHasSeedAccount(String accountName, String accountType) 3199 throws RemoteException { 3200 checkManageUsersPermission("Cannot check seed account information"); 3201 synchronized (mUsersLock) { 3202 final int userSize = mUsers.size(); 3203 for (int i = 0; i < userSize; i++) { 3204 final UserData data = mUsers.valueAt(i); 3205 if (data.info.isInitialized()) continue; 3206 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 3207 continue; 3208 } 3209 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 3210 continue; 3211 } 3212 return true; 3213 } 3214 } 3215 return false; 3216 } 3217 3218 @Override 3219 public void onShellCommand(FileDescriptor in, FileDescriptor out, 3220 FileDescriptor err, String[] args, ShellCallback callback, 3221 ResultReceiver resultReceiver) { 3222 (new Shell()).exec(this, in, out, err, args, callback, resultReceiver); 3223 } 3224 3225 int onShellCommand(Shell shell, String cmd) { 3226 if (cmd == null) { 3227 return shell.handleDefaultCommands(cmd); 3228 } 3229 3230 final PrintWriter pw = shell.getOutPrintWriter(); 3231 try { 3232 switch(cmd) { 3233 case "list": 3234 return runList(pw); 3235 } 3236 } catch (RemoteException e) { 3237 pw.println("Remote exception: " + e); 3238 } 3239 return -1; 3240 } 3241 3242 private int runList(PrintWriter pw) throws RemoteException { 3243 final IActivityManager am = ActivityManagerNative.getDefault(); 3244 final List<UserInfo> users = getUsers(false); 3245 if (users == null) { 3246 pw.println("Error: couldn't get users"); 3247 return 1; 3248 } else { 3249 pw.println("Users:"); 3250 for (int i = 0; i < users.size(); i++) { 3251 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 3252 pw.println("\t" + users.get(i).toString() + running); 3253 } 3254 return 0; 3255 } 3256 } 3257 3258 @Override 3259 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3260 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 3261 != PackageManager.PERMISSION_GRANTED) { 3262 pw.println("Permission Denial: can't dump UserManager from from pid=" 3263 + Binder.getCallingPid() 3264 + ", uid=" + Binder.getCallingUid() 3265 + " without permission " 3266 + android.Manifest.permission.DUMP); 3267 return; 3268 } 3269 3270 long now = System.currentTimeMillis(); 3271 StringBuilder sb = new StringBuilder(); 3272 synchronized (mPackagesLock) { 3273 synchronized (mUsersLock) { 3274 pw.println("Users:"); 3275 for (int i = 0; i < mUsers.size(); i++) { 3276 UserData userData = mUsers.valueAt(i); 3277 if (userData == null) { 3278 continue; 3279 } 3280 UserInfo userInfo = userData.info; 3281 final int userId = userInfo.id; 3282 pw.print(" "); pw.print(userInfo); 3283 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 3284 if (mRemovingUserIds.get(userId)) { 3285 pw.print(" <removing> "); 3286 } 3287 if (userInfo.partial) { 3288 pw.print(" <partial>"); 3289 } 3290 pw.println(); 3291 pw.print(" Created: "); 3292 if (userInfo.creationTime == 0) { 3293 pw.println("<unknown>"); 3294 } else { 3295 sb.setLength(0); 3296 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 3297 sb.append(" ago"); 3298 pw.println(sb); 3299 } 3300 pw.print(" Last logged in: "); 3301 if (userInfo.lastLoggedInTime == 0) { 3302 pw.println("<unknown>"); 3303 } else { 3304 sb.setLength(0); 3305 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 3306 sb.append(" ago"); 3307 pw.println(sb); 3308 } 3309 pw.print(" Last logged in fingerprint: "); 3310 pw.println(userInfo.lastLoggedInFingerprint); 3311 pw.print(" Has profile owner: "); 3312 pw.println(mIsUserManaged.get(userId)); 3313 pw.println(" Restrictions:"); 3314 synchronized (mRestrictionsLock) { 3315 UserRestrictionsUtils.dumpRestrictions( 3316 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 3317 pw.println(" Device policy local restrictions:"); 3318 UserRestrictionsUtils.dumpRestrictions( 3319 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 3320 pw.println(" Effective restrictions:"); 3321 UserRestrictionsUtils.dumpRestrictions( 3322 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 3323 } 3324 3325 if (userData.account != null) { 3326 pw.print(" Account name: " + userData.account); 3327 pw.println(); 3328 } 3329 3330 if (userData.seedAccountName != null) { 3331 pw.print(" Seed account name: " + userData.seedAccountName); 3332 pw.println(); 3333 if (userData.seedAccountType != null) { 3334 pw.print(" account type: " + userData.seedAccountType); 3335 pw.println(); 3336 } 3337 if (userData.seedAccountOptions != null) { 3338 pw.print(" account options exist"); 3339 pw.println(); 3340 } 3341 } 3342 } 3343 } 3344 pw.println(); 3345 pw.println(" Device policy global restrictions:"); 3346 synchronized (mRestrictionsLock) { 3347 UserRestrictionsUtils 3348 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 3349 } 3350 pw.println(); 3351 pw.println(" Global restrictions owner id:" + mGlobalRestrictionOwnerUserId); 3352 pw.println(); 3353 pw.println(" Guest restrictions:"); 3354 synchronized (mGuestRestrictions) { 3355 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 3356 } 3357 synchronized (mUsersLock) { 3358 pw.println(); 3359 pw.println(" Device managed: " + mIsDeviceManaged); 3360 if (mRemovingUserIds.size() > 0) { 3361 pw.println(); 3362 pw.println(" Recently removed userIds: " + mRecentlyRemovedIds); 3363 } 3364 } 3365 synchronized (mUserStates) { 3366 pw.println(" Started users state: " + mUserStates); 3367 } 3368 // Dump some capabilities 3369 pw.println(); 3370 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 3371 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 3372 pw.println(" All guests ephemeral: " + Resources.getSystem().getBoolean( 3373 com.android.internal.R.bool.config_guestUserEphemeral)); 3374 } 3375 } 3376 3377 final class MainHandler extends Handler { 3378 3379 @Override 3380 public void handleMessage(Message msg) { 3381 switch (msg.what) { 3382 case WRITE_USER_MSG: 3383 removeMessages(WRITE_USER_MSG, msg.obj); 3384 synchronized (mPackagesLock) { 3385 int userId = ((UserData) msg.obj).info.id; 3386 UserData userData = getUserDataNoChecks(userId); 3387 if (userData != null) { 3388 writeUserLP(userData); 3389 } 3390 } 3391 } 3392 } 3393 } 3394 3395 /** 3396 * @param userId 3397 * @return whether the user has been initialized yet 3398 */ 3399 boolean isInitialized(int userId) { 3400 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 3401 } 3402 3403 private class LocalService extends UserManagerInternal { 3404 @Override 3405 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 3406 @Nullable Bundle globalRestrictions) { 3407 UserManagerService.this.setDevicePolicyUserRestrictionsInner(userId, localRestrictions, 3408 globalRestrictions); 3409 } 3410 3411 @Override 3412 public Bundle getBaseUserRestrictions(int userId) { 3413 synchronized (mRestrictionsLock) { 3414 return mBaseUserRestrictions.get(userId); 3415 } 3416 } 3417 3418 @Override 3419 public void setBaseUserRestrictionsByDpmsForMigration( 3420 int userId, Bundle baseRestrictions) { 3421 synchronized (mRestrictionsLock) { 3422 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 3423 invalidateEffectiveUserRestrictionsLR(userId); 3424 } 3425 3426 final UserData userData = getUserDataNoChecks(userId); 3427 synchronized (mPackagesLock) { 3428 if (userData != null) { 3429 writeUserLP(userData); 3430 } else { 3431 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 3432 } 3433 } 3434 } 3435 3436 @Override 3437 public boolean getUserRestriction(int userId, String key) { 3438 return getUserRestrictions(userId).getBoolean(key); 3439 } 3440 3441 @Override 3442 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 3443 synchronized (mUserRestrictionsListeners) { 3444 mUserRestrictionsListeners.add(listener); 3445 } 3446 } 3447 3448 @Override 3449 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 3450 synchronized (mUserRestrictionsListeners) { 3451 mUserRestrictionsListeners.remove(listener); 3452 } 3453 } 3454 3455 @Override 3456 public void setDeviceManaged(boolean isManaged) { 3457 synchronized (mUsersLock) { 3458 mIsDeviceManaged = isManaged; 3459 } 3460 } 3461 3462 @Override 3463 public void setUserManaged(int userId, boolean isManaged) { 3464 synchronized (mUsersLock) { 3465 mIsUserManaged.put(userId, isManaged); 3466 } 3467 } 3468 3469 @Override 3470 public void setUserIcon(int userId, Bitmap bitmap) { 3471 long ident = Binder.clearCallingIdentity(); 3472 try { 3473 synchronized (mPackagesLock) { 3474 UserData userData = getUserDataNoChecks(userId); 3475 if (userData == null || userData.info.partial) { 3476 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 3477 return; 3478 } 3479 writeBitmapLP(userData.info, bitmap); 3480 writeUserLP(userData); 3481 } 3482 sendUserInfoChangedBroadcast(userId); 3483 } finally { 3484 Binder.restoreCallingIdentity(ident); 3485 } 3486 } 3487 3488 @Override 3489 public void setForceEphemeralUsers(boolean forceEphemeralUsers) { 3490 synchronized (mUsersLock) { 3491 mForceEphemeralUsers = forceEphemeralUsers; 3492 } 3493 } 3494 3495 @Override 3496 public void removeAllUsers() { 3497 if (UserHandle.USER_SYSTEM == ActivityManager.getCurrentUser()) { 3498 // Remove the non-system users straight away. 3499 removeNonSystemUsers(); 3500 } else { 3501 // Switch to the system user first and then remove the other users. 3502 BroadcastReceiver userSwitchedReceiver = new BroadcastReceiver() { 3503 @Override 3504 public void onReceive(Context context, Intent intent) { 3505 int userId = 3506 intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3507 if (userId != UserHandle.USER_SYSTEM) { 3508 return; 3509 } 3510 mContext.unregisterReceiver(this); 3511 removeNonSystemUsers(); 3512 } 3513 }; 3514 IntentFilter userSwitchedFilter = new IntentFilter(); 3515 userSwitchedFilter.addAction(Intent.ACTION_USER_SWITCHED); 3516 mContext.registerReceiver( 3517 userSwitchedReceiver, userSwitchedFilter, null, mHandler); 3518 3519 // Switch to the system user. 3520 ActivityManager am = 3521 (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 3522 am.switchUser(UserHandle.USER_SYSTEM); 3523 } 3524 } 3525 3526 @Override 3527 public void onEphemeralUserStop(int userId) { 3528 synchronized (mUsersLock) { 3529 UserInfo userInfo = getUserInfoLU(userId); 3530 if (userInfo != null && userInfo.isEphemeral()) { 3531 // Do not allow switching back to the ephemeral user again as the user is going 3532 // to be deleted. 3533 userInfo.flags |= UserInfo.FLAG_DISABLED; 3534 if (userInfo.isGuest()) { 3535 // Indicate that the guest will be deleted after it stops. 3536 userInfo.guestToRemove = true; 3537 } 3538 } 3539 } 3540 } 3541 3542 @Override 3543 public UserInfo createUserEvenWhenDisallowed(String name, int flags) { 3544 UserInfo user = createUserInternalUnchecked(name, flags, UserHandle.USER_NULL, null); 3545 // Keep this in sync with UserManager.createUser 3546 if (user != null && !user.isAdmin()) { 3547 setUserRestriction(UserManager.DISALLOW_SMS, true, user.id); 3548 setUserRestriction(UserManager.DISALLOW_OUTGOING_CALLS, true, user.id); 3549 } 3550 return user; 3551 } 3552 3553 @Override 3554 public boolean isUserRunning(int userId) { 3555 synchronized (mUserStates) { 3556 return mUserStates.get(userId, -1) >= 0; 3557 } 3558 } 3559 3560 @Override 3561 public void setUserState(int userId, int userState) { 3562 synchronized (mUserStates) { 3563 mUserStates.put(userId, userState); 3564 } 3565 } 3566 3567 @Override 3568 public void removeUserState(int userId) { 3569 synchronized (mUserStates) { 3570 mUserStates.delete(userId); 3571 } 3572 } 3573 3574 @Override 3575 public boolean isUserUnlockingOrUnlocked(int userId) { 3576 synchronized (mUserStates) { 3577 int state = mUserStates.get(userId, -1); 3578 return (state == UserState.STATE_RUNNING_UNLOCKING) 3579 || (state == UserState.STATE_RUNNING_UNLOCKED); 3580 } 3581 } 3582 } 3583 3584 /* Remove all the users except of the system one. */ 3585 private void removeNonSystemUsers() { 3586 ArrayList<UserInfo> usersToRemove = new ArrayList<>(); 3587 synchronized (mUsersLock) { 3588 final int userSize = mUsers.size(); 3589 for (int i = 0; i < userSize; i++) { 3590 UserInfo ui = mUsers.valueAt(i).info; 3591 if (ui.id != UserHandle.USER_SYSTEM) { 3592 usersToRemove.add(ui); 3593 } 3594 } 3595 } 3596 for (UserInfo ui: usersToRemove) { 3597 removeUser(ui.id); 3598 } 3599 } 3600 3601 private class Shell extends ShellCommand { 3602 @Override 3603 public int onCommand(String cmd) { 3604 return onShellCommand(this, cmd); 3605 } 3606 3607 @Override 3608 public void onHelp() { 3609 final PrintWriter pw = getOutPrintWriter(); 3610 pw.println("User manager (user) commands:"); 3611 pw.println(" help"); 3612 pw.println(" Print this help text."); 3613 pw.println(""); 3614 pw.println(" list"); 3615 pw.println(" Prints all users on the system."); 3616 } 3617 } 3618 3619 private static void debug(String message) { 3620 Log.d(LOG_TAG, message + 3621 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 3622 } 3623} 3624