UserManagerService.java revision d9453b8ba17f93643d9b98b19247f5b243d25dc0
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.pm; 18 19import android.Manifest; 20import android.annotation.NonNull; 21import android.annotation.Nullable; 22import android.app.Activity; 23import android.app.ActivityManager; 24import android.app.ActivityManagerInternal; 25import android.app.ActivityManagerNative; 26import android.app.IActivityManager; 27import android.app.IStopUserCallback; 28import android.content.BroadcastReceiver; 29import android.content.Context; 30import android.content.Intent; 31import android.content.IntentFilter; 32import android.content.pm.ApplicationInfo; 33import android.content.pm.PackageManager; 34import android.content.pm.PackageManager.NameNotFoundException; 35import android.content.pm.UserInfo; 36import android.content.res.Resources; 37import android.graphics.Bitmap; 38import android.os.Binder; 39import android.os.Bundle; 40import android.os.Debug; 41import android.os.Environment; 42import android.os.FileUtils; 43import android.os.Handler; 44import android.os.IBinder; 45import android.os.IUserManager; 46import android.os.Message; 47import android.os.ParcelFileDescriptor; 48import android.os.Parcelable; 49import android.os.PersistableBundle; 50import android.os.Process; 51import android.os.RemoteException; 52import android.os.ResultReceiver; 53import android.os.SELinux; 54import android.os.ServiceManager; 55import android.os.ShellCommand; 56import android.os.UserHandle; 57import android.os.UserManager; 58import android.os.UserManagerInternal; 59import android.os.UserManagerInternal.UserRestrictionsListener; 60import android.os.storage.StorageManager; 61import android.os.storage.VolumeInfo; 62import android.system.ErrnoException; 63import android.system.Os; 64import android.system.OsConstants; 65import android.util.AtomicFile; 66import android.util.Log; 67import android.util.Slog; 68import android.util.SparseArray; 69import android.util.SparseBooleanArray; 70import android.util.TimeUtils; 71import android.util.Xml; 72 73import com.android.internal.annotations.GuardedBy; 74import com.android.internal.annotations.VisibleForTesting; 75import com.android.internal.app.IAppOpsService; 76import com.android.internal.logging.MetricsLogger; 77import com.android.internal.util.FastXmlSerializer; 78import com.android.internal.util.Preconditions; 79import com.android.internal.util.XmlUtils; 80import com.android.internal.widget.LockPatternUtils; 81import com.android.server.LocalServices; 82 83import libcore.io.IoUtils; 84import libcore.util.Objects; 85 86import org.xmlpull.v1.XmlPullParser; 87import org.xmlpull.v1.XmlPullParserException; 88import org.xmlpull.v1.XmlSerializer; 89 90import java.io.BufferedOutputStream; 91import java.io.File; 92import java.io.FileDescriptor; 93import java.io.FileInputStream; 94import java.io.FileNotFoundException; 95import java.io.FileOutputStream; 96import java.io.IOException; 97import java.io.PrintWriter; 98import java.nio.charset.StandardCharsets; 99import java.util.ArrayList; 100import java.util.List; 101 102/** 103 * Service for {@link UserManager}. 104 * 105 * Method naming convention: 106 * <ul> 107 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 108 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 109 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 110 * </ul> 111 */ 112public class UserManagerService extends IUserManager.Stub { 113 private static final String LOG_TAG = "UserManagerService"; 114 static final boolean DBG = false; // DO NOT SUBMIT WITH TRUE 115 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 116 117 private static final String TAG_NAME = "name"; 118 private static final String TAG_ACCOUNT = "account"; 119 private static final String ATTR_FLAGS = "flags"; 120 private static final String ATTR_ICON_PATH = "icon"; 121 private static final String ATTR_ID = "id"; 122 private static final String ATTR_CREATION_TIME = "created"; 123 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 124 private static final String ATTR_SERIAL_NO = "serialNumber"; 125 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 126 private static final String ATTR_PARTIAL = "partial"; 127 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 128 private static final String ATTR_USER_VERSION = "version"; 129 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 130 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 131 private static final String ATTR_SEED_ACCOUNT_NAME = "seedAccountName"; 132 private static final String ATTR_SEED_ACCOUNT_TYPE = "seedAccountType"; 133 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 134 private static final String TAG_USERS = "users"; 135 private static final String TAG_USER = "user"; 136 private static final String TAG_RESTRICTIONS = "restrictions"; 137 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 138 private static final String TAG_ENTRY = "entry"; 139 private static final String TAG_VALUE = "value"; 140 private static final String TAG_SEED_ACCOUNT_OPTIONS = "seedAccountOptions"; 141 private static final String ATTR_KEY = "key"; 142 private static final String ATTR_VALUE_TYPE = "type"; 143 private static final String ATTR_MULTIPLE = "m"; 144 145 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 146 private static final String ATTR_TYPE_STRING = "s"; 147 private static final String ATTR_TYPE_BOOLEAN = "b"; 148 private static final String ATTR_TYPE_INTEGER = "i"; 149 private static final String ATTR_TYPE_BUNDLE = "B"; 150 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 151 152 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 153 private static final String USER_LIST_FILENAME = "userlist.xml"; 154 private static final String USER_PHOTO_FILENAME = "photo.png"; 155 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 156 157 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 158 private static final String XML_SUFFIX = ".xml"; 159 160 private static final int MIN_USER_ID = 10; 161 // We need to keep process uid within Integer.MAX_VALUE. 162 private static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 163 164 private static final int USER_VERSION = 6; 165 166 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 167 168 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 169 // without first making sure that the rest of the framework is prepared for it. 170 private static final int MAX_MANAGED_PROFILES = 1; 171 172 static final int WRITE_USER_MSG = 1; 173 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 174 175 private static final String XATTR_SERIAL = "user.serial"; 176 177 // Tron counters 178 private static final String TRON_GUEST_CREATED = "users_guest_created"; 179 private static final String TRON_USER_CREATED = "users_user_created"; 180 181 private final Context mContext; 182 private final PackageManagerService mPm; 183 private final Object mPackagesLock; 184 // Short-term lock for internal state, when interaction/sync with PM is not required 185 private final Object mUsersLock = new Object(); 186 private final Object mRestrictionsLock = new Object(); 187 188 private final Handler mHandler; 189 190 private final File mUsersDir; 191 private final File mUserListFile; 192 193 private static final IBinder mUserRestriconToken = new Binder(); 194 195 /** 196 * User-related information that is used for persisting to flash. Only UserInfo is 197 * directly exposed to other system apps. 198 */ 199 private static class UserData { 200 // Basic user information and properties 201 UserInfo info; 202 // Account name used when there is a strong association between a user and an account 203 String account; 204 // Account information for seeding into a newly created user. This could also be 205 // used for login validation for an existing user, for updating their credentials. 206 // In the latter case, data may not need to be persisted as it is only valid for the 207 // current login session. 208 String seedAccountName; 209 String seedAccountType; 210 PersistableBundle seedAccountOptions; 211 // Whether to perist the seed account information to be available after a boot 212 boolean persistSeedData; 213 214 void clearSeedAccountData() { 215 seedAccountName = null; 216 seedAccountType = null; 217 seedAccountOptions = null; 218 persistSeedData = false; 219 } 220 } 221 222 @GuardedBy("mUsersLock") 223 private final SparseArray<UserData> mUsers = new SparseArray<>(); 224 225 /** 226 * User restrictions set via UserManager. This doesn't include restrictions set by 227 * device owner / profile owners. 228 * 229 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 230 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 231 * maybe shared between {@link #mBaseUserRestrictions} and 232 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 233 * (Otherwise we won't be able to detect what restrictions have changed in 234 * {@link #updateUserRestrictionsInternalLR}. 235 */ 236 @GuardedBy("mRestrictionsLock") 237 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 238 239 /** 240 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 241 * with device / profile owner restrictions. We'll initialize it lazily; use 242 * {@link #getEffectiveUserRestrictions} to access it. 243 * 244 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 245 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 246 * maybe shared between {@link #mBaseUserRestrictions} and 247 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 248 * (Otherwise we won't be able to detect what restrictions have changed in 249 * {@link #updateUserRestrictionsInternalLR}. 250 */ 251 @GuardedBy("mRestrictionsLock") 252 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 253 254 /** 255 * User restrictions that have already been applied in 256 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 257 * that have changed since the last 258 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 259 */ 260 @GuardedBy("mRestrictionsLock") 261 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 262 263 /** 264 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 265 * that should be applied to all users, including guests. 266 */ 267 @GuardedBy("mRestrictionsLock") 268 private Bundle mDevicePolicyGlobalUserRestrictions; 269 270 /** 271 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 272 * for each user. 273 */ 274 @GuardedBy("mRestrictionsLock") 275 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 276 277 @GuardedBy("mGuestRestrictions") 278 private final Bundle mGuestRestrictions = new Bundle(); 279 280 /** 281 * Set of user IDs being actively removed. Removed IDs linger in this set 282 * for several seconds to work around a VFS caching issue. 283 */ 284 @GuardedBy("mUsersLock") 285 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 286 287 @GuardedBy("mUsersLock") 288 private int[] mUserIds; 289 @GuardedBy("mPackagesLock") 290 private int mNextSerialNumber; 291 private int mUserVersion = 0; 292 293 private IAppOpsService mAppOpsService; 294 295 private final LocalService mLocalService; 296 297 @GuardedBy("mUsersLock") 298 private boolean mIsDeviceManaged; 299 300 @GuardedBy("mUsersLock") 301 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 302 303 @GuardedBy("mUserRestrictionsListeners") 304 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 305 new ArrayList<>(); 306 307 private final LockPatternUtils mLockPatternUtils; 308 309 /** 310 * Whether all users should be created ephemeral. 311 */ 312 @GuardedBy("mUsersLock") 313 private boolean mForceEphemeralUsers; 314 315 private static UserManagerService sInstance; 316 317 public static UserManagerService getInstance() { 318 synchronized (UserManagerService.class) { 319 return sInstance; 320 } 321 } 322 323 @VisibleForTesting 324 UserManagerService(File dataDir) { 325 this(null, null, new Object(), dataDir); 326 } 327 328 /** 329 * Called by package manager to create the service. This is closely 330 * associated with the package manager, and the given lock is the 331 * package manager's own lock. 332 */ 333 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 334 this(context, pm, packagesLock, Environment.getDataDirectory()); 335 } 336 337 private UserManagerService(Context context, PackageManagerService pm, 338 Object packagesLock, File dataDir) { 339 mContext = context; 340 mPm = pm; 341 mPackagesLock = packagesLock; 342 mHandler = new MainHandler(); 343 synchronized (mPackagesLock) { 344 mUsersDir = new File(dataDir, USER_INFO_DIR); 345 mUsersDir.mkdirs(); 346 // Make zeroth user directory, for services to migrate their files to that location 347 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 348 userZeroDir.mkdirs(); 349 FileUtils.setPermissions(mUsersDir.toString(), 350 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 351 -1, -1); 352 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 353 initDefaultGuestRestrictions(); 354 readUserListLP(); 355 sInstance = this; 356 } 357 mLocalService = new LocalService(); 358 LocalServices.addService(UserManagerInternal.class, mLocalService); 359 mLockPatternUtils = new LockPatternUtils(mContext); 360 } 361 362 void systemReady() { 363 // Prune out any partially created, partially removed and ephemeral users. 364 ArrayList<UserInfo> partials = new ArrayList<>(); 365 synchronized (mUsersLock) { 366 final int userSize = mUsers.size(); 367 for (int i = 0; i < userSize; i++) { 368 UserInfo ui = mUsers.valueAt(i).info; 369 if ((ui.partial || ui.guestToRemove || ui.isEphemeral()) && i != 0) { 370 partials.add(ui); 371 } 372 } 373 } 374 final int partialsSize = partials.size(); 375 for (int i = 0; i < partialsSize; i++) { 376 UserInfo ui = partials.get(i); 377 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 378 + " (name=" + ui.name + ")"); 379 removeUserState(ui.id); 380 } 381 382 onUserForeground(UserHandle.USER_SYSTEM); 383 384 mAppOpsService = IAppOpsService.Stub.asInterface( 385 ServiceManager.getService(Context.APP_OPS_SERVICE)); 386 387 synchronized (mRestrictionsLock) { 388 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 389 } 390 391 UserInfo currentGuestUser = findCurrentGuestUser(); 392 if (currentGuestUser != null && !hasUserRestriction( 393 UserManager.DISALLOW_CONFIG_WIFI, currentGuestUser.id)) { 394 // If a guest user currently exists, apply the DISALLOW_CONFIG_WIFI option 395 // to it, in case this guest was created in a previous version where this 396 // user restriction was not a default guest restriction. 397 setUserRestriction(UserManager.DISALLOW_CONFIG_WIFI, true, currentGuestUser.id); 398 } 399 } 400 401 @Override 402 public String getUserAccount(int userId) { 403 checkManageUserAndAcrossUsersFullPermission("get user account"); 404 synchronized (mUsersLock) { 405 return mUsers.get(userId).account; 406 } 407 } 408 409 @Override 410 public void setUserAccount(int userId, String accountName) { 411 checkManageUserAndAcrossUsersFullPermission("set user account"); 412 UserData userToUpdate = null; 413 synchronized (mPackagesLock) { 414 synchronized (mUsersLock) { 415 final UserData userData = mUsers.get(userId); 416 if (userData == null) { 417 Slog.e(LOG_TAG, "User not found for setting user account: u" + userId); 418 return; 419 } 420 String currentAccount = userData.account; 421 if (!Objects.equal(currentAccount, accountName)) { 422 userData.account = accountName; 423 userToUpdate = userData; 424 } 425 } 426 427 if (userToUpdate != null) { 428 writeUserLP(userToUpdate); 429 } 430 } 431 } 432 433 @Override 434 public UserInfo getPrimaryUser() { 435 checkManageUsersPermission("query users"); 436 synchronized (mUsersLock) { 437 final int userSize = mUsers.size(); 438 for (int i = 0; i < userSize; i++) { 439 UserInfo ui = mUsers.valueAt(i).info; 440 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 441 return ui; 442 } 443 } 444 } 445 return null; 446 } 447 448 @Override 449 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 450 checkManageUsersPermission("query users"); 451 synchronized (mUsersLock) { 452 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 453 final int userSize = mUsers.size(); 454 for (int i = 0; i < userSize; i++) { 455 UserInfo ui = mUsers.valueAt(i).info; 456 if (ui.partial) { 457 continue; 458 } 459 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 460 users.add(ui); 461 } 462 } 463 return users; 464 } 465 } 466 467 @Override 468 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 469 if (userId != UserHandle.getCallingUserId()) { 470 checkManageUsersPermission("getting profiles related to user " + userId); 471 } 472 final long ident = Binder.clearCallingIdentity(); 473 try { 474 synchronized (mUsersLock) { 475 return getProfilesLU(userId, enabledOnly); 476 } 477 } finally { 478 Binder.restoreCallingIdentity(ident); 479 } 480 } 481 482 /** Assume permissions already checked and caller's identity cleared */ 483 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly) { 484 UserInfo user = getUserInfoLU(userId); 485 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 486 if (user == null) { 487 // Probably a dying user 488 return users; 489 } 490 final int userSize = mUsers.size(); 491 for (int i = 0; i < userSize; i++) { 492 UserInfo profile = mUsers.valueAt(i).info; 493 if (!isProfileOf(user, profile)) { 494 continue; 495 } 496 if (enabledOnly && !profile.isEnabled()) { 497 continue; 498 } 499 if (mRemovingUserIds.get(profile.id)) { 500 continue; 501 } 502 users.add(profile); 503 } 504 return users; 505 } 506 507 @Override 508 public int getCredentialOwnerProfile(int userHandle) { 509 checkManageUsersPermission("get the credential owner"); 510 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 511 synchronized (mUsersLock) { 512 UserInfo profileParent = getProfileParentLU(userHandle); 513 if (profileParent != null) { 514 return profileParent.id; 515 } 516 } 517 } 518 519 return userHandle; 520 } 521 522 @Override 523 public boolean isSameProfileGroup(int userId, int otherUserId) { 524 if (userId == otherUserId) return true; 525 checkManageUsersPermission("check if in the same profile group"); 526 synchronized (mPackagesLock) { 527 return isSameProfileGroupLP(userId, otherUserId); 528 } 529 } 530 531 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 532 synchronized (mUsersLock) { 533 UserInfo userInfo = getUserInfoLU(userId); 534 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 535 return false; 536 } 537 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 538 if (otherUserInfo == null 539 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 540 return false; 541 } 542 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 543 } 544 } 545 546 @Override 547 public UserInfo getProfileParent(int userHandle) { 548 checkManageUsersPermission("get the profile parent"); 549 synchronized (mUsersLock) { 550 return getProfileParentLU(userHandle); 551 } 552 } 553 554 private UserInfo getProfileParentLU(int userHandle) { 555 UserInfo profile = getUserInfoLU(userHandle); 556 if (profile == null) { 557 return null; 558 } 559 int parentUserId = profile.profileGroupId; 560 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 561 return null; 562 } else { 563 return getUserInfoLU(parentUserId); 564 } 565 } 566 567 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 568 return user.id == profile.id || 569 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 570 && user.profileGroupId == profile.profileGroupId); 571 } 572 573 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 574 UserHandle parentHandle, boolean inQuietMode) { 575 Intent intent = new Intent(Intent.ACTION_MANAGED_PROFILE_AVAILABILITY_CHANGED); 576 intent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 577 intent.putExtra(Intent.EXTRA_USER, profileHandle); 578 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 579 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 580 mContext.sendBroadcastAsUser(intent, parentHandle); 581 } 582 583 @Override 584 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 585 checkManageUsersPermission("silence profile"); 586 boolean changed = false; 587 UserInfo profile, parent; 588 synchronized (mPackagesLock) { 589 synchronized (mUsersLock) { 590 profile = getUserInfoLU(userHandle); 591 parent = getProfileParentLU(userHandle); 592 593 } 594 if (profile == null || !profile.isManagedProfile()) { 595 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 596 } 597 if (profile.isQuietModeEnabled() != enableQuietMode) { 598 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 599 writeUserLP(getUserDataLU(profile.id)); 600 changed = true; 601 } 602 } 603 if (changed) { 604 long identity = Binder.clearCallingIdentity(); 605 try { 606 if (enableQuietMode) { 607 ActivityManagerNative.getDefault().stopUser(userHandle, /* force */true, null); 608 } else { 609 ActivityManagerNative.getDefault().startUserInBackground(userHandle); 610 } 611 } catch (RemoteException e) { 612 Slog.e(LOG_TAG, "fail to start/stop user for quiet mode", e); 613 } finally { 614 Binder.restoreCallingIdentity(identity); 615 } 616 617 broadcastProfileAvailabilityChanges(profile.getUserHandle(), parent.getUserHandle(), 618 enableQuietMode); 619 } 620 } 621 622 @Override 623 public boolean isQuietModeEnabled(int userHandle) { 624 synchronized (mPackagesLock) { 625 UserInfo info; 626 synchronized (mUsersLock) { 627 info = getUserInfoLU(userHandle); 628 } 629 if (info == null || !info.isManagedProfile()) { 630 return false; 631 } 632 return info.isQuietModeEnabled(); 633 } 634 } 635 636 @Override 637 public void setUserEnabled(int userId) { 638 checkManageUsersPermission("enable user"); 639 synchronized (mPackagesLock) { 640 UserInfo info; 641 synchronized (mUsersLock) { 642 info = getUserInfoLU(userId); 643 } 644 if (info != null && !info.isEnabled()) { 645 info.flags ^= UserInfo.FLAG_DISABLED; 646 writeUserLP(getUserDataLU(info.id)); 647 } 648 } 649 } 650 651 @Override 652 public UserInfo getUserInfo(int userId) { 653 int callingUserId = UserHandle.getCallingUserId(); 654 if (callingUserId != userId && !hasManageUsersPermission()) { 655 synchronized (mPackagesLock) { 656 if (!isSameProfileGroupLP(callingUserId, userId)) { 657 throw new SecurityException( 658 "You need MANAGE_USERS permission to: query users outside profile" + 659 " group"); 660 } 661 } 662 } 663 synchronized (mUsersLock) { 664 return getUserInfoLU(userId); 665 } 666 } 667 668 @Override 669 public boolean isRestricted() { 670 synchronized (mUsersLock) { 671 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 672 } 673 } 674 675 @Override 676 public boolean canHaveRestrictedProfile(int userId) { 677 checkManageUsersPermission("canHaveRestrictedProfile"); 678 synchronized (mUsersLock) { 679 final UserInfo userInfo = getUserInfoLU(userId); 680 if (userInfo == null || !userInfo.canHaveProfile()) { 681 return false; 682 } 683 if (!userInfo.isAdmin()) { 684 return false; 685 } 686 // restricted profile can be created if there is no DO set and the admin user has no PO; 687 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 688 } 689 } 690 691 /* 692 * Should be locked on mUsers before calling this. 693 */ 694 private UserInfo getUserInfoLU(int userId) { 695 final UserData userData = mUsers.get(userId); 696 // If it is partial and not in the process of being removed, return as unknown user. 697 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 698 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 699 return null; 700 } 701 return userData != null ? userData.info : null; 702 } 703 704 private UserData getUserDataLU(int userId) { 705 final UserData userData = mUsers.get(userId); 706 // If it is partial and not in the process of being removed, return as unknown user. 707 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 708 return null; 709 } 710 return userData; 711 } 712 713 /** 714 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 715 * <p>No permissions checking or any addition checks are made</p> 716 */ 717 private UserInfo getUserInfoNoChecks(int userId) { 718 synchronized (mUsersLock) { 719 final UserData userData = mUsers.get(userId); 720 return userData != null ? userData.info : null; 721 } 722 } 723 724 /** 725 * Obtains {@link #mUsersLock} and return UserData from mUsers. 726 * <p>No permissions checking or any addition checks are made</p> 727 */ 728 private UserData getUserDataNoChecks(int userId) { 729 synchronized (mUsersLock) { 730 return mUsers.get(userId); 731 } 732 } 733 734 /** Called by PackageManagerService */ 735 public boolean exists(int userId) { 736 return getUserInfoNoChecks(userId) != null; 737 } 738 739 @Override 740 public void setUserName(int userId, String name) { 741 checkManageUsersPermission("rename users"); 742 boolean changed = false; 743 synchronized (mPackagesLock) { 744 UserData userData = getUserDataNoChecks(userId); 745 if (userData == null || userData.info.partial) { 746 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 747 return; 748 } 749 if (name != null && !name.equals(userData.info.name)) { 750 userData.info.name = name; 751 writeUserLP(userData); 752 changed = true; 753 } 754 } 755 if (changed) { 756 sendUserInfoChangedBroadcast(userId); 757 } 758 } 759 760 @Override 761 public void setUserIcon(int userId, Bitmap bitmap) { 762 checkManageUsersPermission("update users"); 763 if (hasUserRestriction(UserManager.DISALLOW_SET_USER_ICON, userId)) { 764 Log.w(LOG_TAG, "Cannot set user icon. DISALLOW_SET_USER_ICON is enabled."); 765 return; 766 } 767 mLocalService.setUserIcon(userId, bitmap); 768 } 769 770 771 772 private void sendUserInfoChangedBroadcast(int userId) { 773 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 774 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 775 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 776 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 777 } 778 779 @Override 780 public ParcelFileDescriptor getUserIcon(int targetUserId) { 781 String iconPath; 782 synchronized (mPackagesLock) { 783 UserInfo targetUserInfo = getUserInfoNoChecks(targetUserId); 784 if (targetUserInfo == null || targetUserInfo.partial) { 785 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + targetUserId); 786 return null; 787 } 788 789 final int callingUserId = UserHandle.getCallingUserId(); 790 final int callingGroupId = getUserInfoNoChecks(callingUserId).profileGroupId; 791 final int targetGroupId = targetUserInfo.profileGroupId; 792 final boolean sameGroup = (callingGroupId != UserInfo.NO_PROFILE_GROUP_ID 793 && callingGroupId == targetGroupId); 794 if ((callingUserId != targetUserId) && !sameGroup) { 795 checkManageUsersPermission("get the icon of a user who is not related"); 796 } 797 798 if (targetUserInfo.iconPath == null) { 799 return null; 800 } 801 iconPath = targetUserInfo.iconPath; 802 } 803 804 try { 805 return ParcelFileDescriptor.open( 806 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 807 } catch (FileNotFoundException e) { 808 Log.e(LOG_TAG, "Couldn't find icon file", e); 809 } 810 return null; 811 } 812 813 public void makeInitialized(int userId) { 814 checkManageUsersPermission("makeInitialized"); 815 boolean scheduleWriteUser = false; 816 UserData userData; 817 synchronized (mUsersLock) { 818 userData = mUsers.get(userId); 819 if (userData == null || userData.info.partial) { 820 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 821 return; 822 } 823 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 824 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 825 scheduleWriteUser = true; 826 } 827 } 828 if (scheduleWriteUser) { 829 scheduleWriteUser(userData); 830 } 831 } 832 833 /** 834 * If default guest restrictions haven't been initialized yet, add the basic 835 * restrictions. 836 */ 837 private void initDefaultGuestRestrictions() { 838 synchronized (mGuestRestrictions) { 839 if (mGuestRestrictions.isEmpty()) { 840 mGuestRestrictions.putBoolean(UserManager.DISALLOW_CONFIG_WIFI, true); 841 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 842 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 843 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 844 } 845 } 846 } 847 848 @Override 849 public Bundle getDefaultGuestRestrictions() { 850 checkManageUsersPermission("getDefaultGuestRestrictions"); 851 synchronized (mGuestRestrictions) { 852 return new Bundle(mGuestRestrictions); 853 } 854 } 855 856 @Override 857 public void setDefaultGuestRestrictions(Bundle restrictions) { 858 checkManageUsersPermission("setDefaultGuestRestrictions"); 859 synchronized (mGuestRestrictions) { 860 mGuestRestrictions.clear(); 861 mGuestRestrictions.putAll(restrictions); 862 } 863 synchronized (mPackagesLock) { 864 writeUserListLP(); 865 } 866 } 867 868 /** 869 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 870 */ 871 void setDevicePolicyUserRestrictionsInner(int userId, @NonNull Bundle local, 872 @Nullable Bundle global) { 873 Preconditions.checkNotNull(local); 874 boolean globalChanged = false; 875 boolean localChanged; 876 synchronized (mRestrictionsLock) { 877 if (global != null) { 878 // Update global. 879 globalChanged = !UserRestrictionsUtils.areEqual( 880 mDevicePolicyGlobalUserRestrictions, global); 881 if (globalChanged) { 882 mDevicePolicyGlobalUserRestrictions = global; 883 } 884 } 885 { 886 // Update local. 887 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 888 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 889 if (localChanged) { 890 mDevicePolicyLocalUserRestrictions.put(userId, local); 891 } 892 } 893 } 894 if (DBG) { 895 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 896 + " global=" + global + (globalChanged ? " (changed)" : "") 897 + " local=" + local + (localChanged ? " (changed)" : "") 898 ); 899 } 900 // Don't call them within the mRestrictionsLock. 901 synchronized (mPackagesLock) { 902 if (globalChanged) { 903 writeUserListLP(); 904 } 905 if (localChanged) { 906 writeUserLP(getUserDataNoChecks(userId)); 907 } 908 } 909 910 synchronized (mRestrictionsLock) { 911 if (globalChanged) { 912 applyUserRestrictionsForAllUsersLR(); 913 } else if (localChanged) { 914 applyUserRestrictionsLR(userId); 915 } 916 } 917 } 918 919 @GuardedBy("mRestrictionsLock") 920 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 921 final Bundle baseRestrictions = 922 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 923 final Bundle global = mDevicePolicyGlobalUserRestrictions; 924 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 925 926 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 927 // Common case first. 928 return baseRestrictions; 929 } 930 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 931 UserRestrictionsUtils.merge(effective, global); 932 UserRestrictionsUtils.merge(effective, local); 933 934 return effective; 935 } 936 937 @GuardedBy("mRestrictionsLock") 938 private void invalidateEffectiveUserRestrictionsLR(int userId) { 939 if (DBG) { 940 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 941 } 942 mCachedEffectiveUserRestrictions.remove(userId); 943 } 944 945 private Bundle getEffectiveUserRestrictions(int userId) { 946 synchronized (mRestrictionsLock) { 947 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 948 if (restrictions == null) { 949 restrictions = computeEffectiveUserRestrictionsLR(userId); 950 mCachedEffectiveUserRestrictions.put(userId, restrictions); 951 } 952 return restrictions; 953 } 954 } 955 956 /** @return a specific user restriction that's in effect currently. */ 957 @Override 958 public boolean hasUserRestriction(String restrictionKey, int userId) { 959 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 960 return false; 961 } 962 Bundle restrictions = getEffectiveUserRestrictions(userId); 963 return restrictions != null && restrictions.getBoolean(restrictionKey); 964 } 965 966 /** 967 * @return UserRestrictions that are in effect currently. This always returns a new 968 * {@link Bundle}. 969 */ 970 @Override 971 public Bundle getUserRestrictions(int userId) { 972 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 973 } 974 975 @Override 976 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 977 checkManageUsersPermission("hasBaseUserRestriction"); 978 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 979 return false; 980 } 981 synchronized (mRestrictionsLock) { 982 Bundle bundle = mBaseUserRestrictions.get(userId); 983 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 984 } 985 } 986 987 @Override 988 public void setUserRestriction(String key, boolean value, int userId) { 989 checkManageUsersPermission("setUserRestriction"); 990 if (!UserRestrictionsUtils.isValidRestriction(key)) { 991 return; 992 } 993 synchronized (mRestrictionsLock) { 994 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 995 // a copy. 996 final Bundle newRestrictions = UserRestrictionsUtils.clone( 997 mBaseUserRestrictions.get(userId)); 998 newRestrictions.putBoolean(key, value); 999 1000 updateUserRestrictionsInternalLR(newRestrictions, userId); 1001 } 1002 } 1003 1004 /** 1005 * Optionally updating user restrictions, calculate the effective user restrictions and also 1006 * propagate to other services and system settings. 1007 * 1008 * @param newRestrictions User restrictions to set. 1009 * If null, will not update user restrictions and only does the propagation. 1010 * @param userId target user ID. 1011 */ 1012 @GuardedBy("mRestrictionsLock") 1013 private void updateUserRestrictionsInternalLR( 1014 @Nullable Bundle newRestrictions, int userId) { 1015 1016 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 1017 mAppliedUserRestrictions.get(userId)); 1018 1019 // Update base restrictions. 1020 if (newRestrictions != null) { 1021 // If newRestrictions == the current one, it's probably a bug. 1022 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 1023 1024 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 1025 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 1026 != newRestrictions); 1027 1028 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 1029 mBaseUserRestrictions.put(userId, newRestrictions); 1030 scheduleWriteUser(getUserDataNoChecks(userId)); 1031 } 1032 } 1033 1034 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 1035 1036 mCachedEffectiveUserRestrictions.put(userId, effective); 1037 1038 // Apply the new restrictions. 1039 if (DBG) { 1040 debug("Applying user restrictions: userId=" + userId 1041 + " new=" + effective + " prev=" + prevAppliedRestrictions); 1042 } 1043 1044 if (mAppOpsService != null) { // We skip it until system-ready. 1045 final long token = Binder.clearCallingIdentity(); 1046 try { 1047 mAppOpsService.setUserRestrictions(effective, mUserRestriconToken, userId); 1048 } catch (RemoteException e) { 1049 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1050 } finally { 1051 Binder.restoreCallingIdentity(token); 1052 } 1053 } 1054 1055 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1056 1057 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1058 } 1059 1060 private void propagateUserRestrictionsLR(final int userId, 1061 Bundle newRestrictions, Bundle prevRestrictions) { 1062 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1063 // actually, but we still need some kind of synchronization otherwise we might end up 1064 // calling listeners out-of-order, thus "LR". 1065 1066 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1067 return; 1068 } 1069 1070 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1071 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1072 1073 mHandler.post(new Runnable() { 1074 @Override 1075 public void run() { 1076 UserRestrictionsUtils.applyUserRestrictions( 1077 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1078 1079 final UserRestrictionsListener[] listeners; 1080 synchronized (mUserRestrictionsListeners) { 1081 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1082 mUserRestrictionsListeners.toArray(listeners); 1083 } 1084 for (int i = 0; i < listeners.length; i++) { 1085 listeners[i].onUserRestrictionsChanged(userId, 1086 newRestrictionsFinal, prevRestrictionsFinal); 1087 } 1088 } 1089 }); 1090 } 1091 1092 // Package private for the inner class. 1093 void applyUserRestrictionsLR(int userId) { 1094 updateUserRestrictionsInternalLR(null, userId); 1095 } 1096 1097 @GuardedBy("mRestrictionsLock") 1098 // Package private for the inner class. 1099 void applyUserRestrictionsForAllUsersLR() { 1100 if (DBG) { 1101 debug("applyUserRestrictionsForAllUsersLR"); 1102 } 1103 // First, invalidate all cached values. 1104 mCachedEffectiveUserRestrictions.clear(); 1105 1106 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 1107 // it on a handler. 1108 final Runnable r = new Runnable() { 1109 @Override 1110 public void run() { 1111 // Then get the list of running users. 1112 final int[] runningUsers; 1113 try { 1114 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 1115 } catch (RemoteException e) { 1116 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 1117 return; 1118 } 1119 // Then re-calculate the effective restrictions and apply, only for running users. 1120 // It's okay if a new user has started after the getRunningUserIds() call, 1121 // because we'll do the same thing (re-calculate the restrictions and apply) 1122 // when we start a user. 1123 synchronized (mRestrictionsLock) { 1124 for (int i = 0; i < runningUsers.length; i++) { 1125 applyUserRestrictionsLR(runningUsers[i]); 1126 } 1127 } 1128 } 1129 }; 1130 mHandler.post(r); 1131 } 1132 1133 /** 1134 * Check if we've hit the limit of how many users can be created. 1135 */ 1136 private boolean isUserLimitReached() { 1137 int count; 1138 synchronized (mUsersLock) { 1139 count = getAliveUsersExcludingGuestsCountLU(); 1140 } 1141 return count >= UserManager.getMaxSupportedUsers(); 1142 } 1143 1144 @Override 1145 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1146 checkManageUsersPermission("check if more managed profiles can be added."); 1147 if (ActivityManager.isLowRamDeviceStatic()) { 1148 return false; 1149 } 1150 if (!mContext.getPackageManager().hasSystemFeature( 1151 PackageManager.FEATURE_MANAGED_USERS)) { 1152 return false; 1153 } 1154 // Limit number of managed profiles that can be created 1155 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1156 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1157 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1158 return false; 1159 } 1160 synchronized(mUsersLock) { 1161 UserInfo userInfo = getUserInfoLU(userId); 1162 if (!userInfo.canHaveProfile()) { 1163 return false; 1164 } 1165 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1166 - profilesRemovedCount; 1167 // We allow creating a managed profile in the special case where there is only one user. 1168 return usersCountAfterRemoving == 1 1169 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1170 } 1171 } 1172 1173 private int getAliveUsersExcludingGuestsCountLU() { 1174 int aliveUserCount = 0; 1175 final int totalUserCount = mUsers.size(); 1176 // Skip over users being removed 1177 for (int i = 0; i < totalUserCount; i++) { 1178 UserInfo user = mUsers.valueAt(i).info; 1179 if (!mRemovingUserIds.get(user.id) 1180 && !user.isGuest() && !user.partial) { 1181 aliveUserCount++; 1182 } 1183 } 1184 return aliveUserCount; 1185 } 1186 1187 /** 1188 * Enforces that only the system UID or root's UID or apps that have the 1189 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1190 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1191 * permissions can make certain calls to the UserManager. 1192 * 1193 * @param message used as message if SecurityException is thrown 1194 * @throws SecurityException if the caller does not have enough privilege. 1195 */ 1196 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1197 final int uid = Binder.getCallingUid(); 1198 if (uid != Process.SYSTEM_UID && uid != 0 1199 && ActivityManager.checkComponentPermission( 1200 Manifest.permission.MANAGE_USERS, 1201 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1202 && ActivityManager.checkComponentPermission( 1203 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1204 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1205 throw new SecurityException( 1206 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1207 + message); 1208 } 1209 } 1210 1211 /** 1212 * Enforces that only the system UID or root's UID or apps that have the 1213 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1214 * permission can make certain calls to the UserManager. 1215 * 1216 * @param message used as message if SecurityException is thrown 1217 * @throws SecurityException if the caller is not system or root 1218 * @see #hasManageUsersPermission() 1219 */ 1220 private static final void checkManageUsersPermission(String message) { 1221 if (!hasManageUsersPermission()) { 1222 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1223 } 1224 } 1225 1226 /** 1227 * @return whether the calling UID is system UID or root's UID or the calling app has the 1228 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS}. 1229 */ 1230 private static final boolean hasManageUsersPermission() { 1231 final int callingUid = Binder.getCallingUid(); 1232 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1233 || callingUid == Process.ROOT_UID 1234 || ActivityManager.checkComponentPermission( 1235 android.Manifest.permission.MANAGE_USERS, 1236 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1237 } 1238 1239 /** 1240 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1241 * UserManager. 1242 * 1243 * @param message used as message if SecurityException is thrown 1244 * @throws SecurityException if the caller is not system or root 1245 */ 1246 private static void checkSystemOrRoot(String message) { 1247 final int uid = Binder.getCallingUid(); 1248 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1249 throw new SecurityException("Only system may: " + message); 1250 } 1251 } 1252 1253 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1254 try { 1255 File dir = new File(mUsersDir, Integer.toString(info.id)); 1256 File file = new File(dir, USER_PHOTO_FILENAME); 1257 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1258 if (!dir.exists()) { 1259 dir.mkdir(); 1260 FileUtils.setPermissions( 1261 dir.getPath(), 1262 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1263 -1, -1); 1264 } 1265 FileOutputStream os; 1266 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1267 && tmp.renameTo(file) && SELinux.restorecon(file)) { 1268 info.iconPath = file.getAbsolutePath(); 1269 } 1270 try { 1271 os.close(); 1272 } catch (IOException ioe) { 1273 // What the ... ! 1274 } 1275 tmp.delete(); 1276 } catch (FileNotFoundException e) { 1277 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1278 } 1279 } 1280 1281 /** 1282 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1283 * cache it elsewhere. 1284 * @return the array of user ids. 1285 */ 1286 public int[] getUserIds() { 1287 synchronized (mUsersLock) { 1288 return mUserIds; 1289 } 1290 } 1291 1292 private void readUserListLP() { 1293 if (!mUserListFile.exists()) { 1294 fallbackToSingleUserLP(); 1295 return; 1296 } 1297 FileInputStream fis = null; 1298 AtomicFile userListFile = new AtomicFile(mUserListFile); 1299 try { 1300 fis = userListFile.openRead(); 1301 XmlPullParser parser = Xml.newPullParser(); 1302 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1303 int type; 1304 while ((type = parser.next()) != XmlPullParser.START_TAG 1305 && type != XmlPullParser.END_DOCUMENT) { 1306 // Skip 1307 } 1308 1309 if (type != XmlPullParser.START_TAG) { 1310 Slog.e(LOG_TAG, "Unable to read user list"); 1311 fallbackToSingleUserLP(); 1312 return; 1313 } 1314 1315 mNextSerialNumber = -1; 1316 if (parser.getName().equals(TAG_USERS)) { 1317 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1318 if (lastSerialNumber != null) { 1319 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1320 } 1321 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1322 if (versionNumber != null) { 1323 mUserVersion = Integer.parseInt(versionNumber); 1324 } 1325 } 1326 1327 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1328 1329 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1330 if (type == XmlPullParser.START_TAG) { 1331 final String name = parser.getName(); 1332 if (name.equals(TAG_USER)) { 1333 String id = parser.getAttributeValue(null, ATTR_ID); 1334 1335 UserData userData = readUserLP(Integer.parseInt(id)); 1336 1337 if (userData != null) { 1338 synchronized (mUsersLock) { 1339 mUsers.put(userData.info.id, userData); 1340 if (mNextSerialNumber < 0 1341 || mNextSerialNumber <= userData.info.id) { 1342 mNextSerialNumber = userData.info.id + 1; 1343 } 1344 } 1345 } 1346 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1347 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1348 && type != XmlPullParser.END_TAG) { 1349 if (type == XmlPullParser.START_TAG) { 1350 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1351 synchronized (mGuestRestrictions) { 1352 UserRestrictionsUtils 1353 .readRestrictions(parser, mGuestRestrictions); 1354 } 1355 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1356 ) { 1357 UserRestrictionsUtils.readRestrictions(parser, 1358 newDevicePolicyGlobalUserRestrictions); 1359 } 1360 break; 1361 } 1362 } 1363 } 1364 } 1365 } 1366 synchronized (mRestrictionsLock) { 1367 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1368 } 1369 updateUserIds(); 1370 upgradeIfNecessaryLP(); 1371 } catch (IOException | XmlPullParserException e) { 1372 fallbackToSingleUserLP(); 1373 } finally { 1374 IoUtils.closeQuietly(fis); 1375 } 1376 } 1377 1378 /** 1379 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1380 */ 1381 private void upgradeIfNecessaryLP() { 1382 final int originalVersion = mUserVersion; 1383 int userVersion = mUserVersion; 1384 if (userVersion < 1) { 1385 // Assign a proper name for the owner, if not initialized correctly before 1386 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1387 if ("Primary".equals(userData.info.name)) { 1388 userData.info.name = 1389 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1390 scheduleWriteUser(userData); 1391 } 1392 userVersion = 1; 1393 } 1394 1395 if (userVersion < 2) { 1396 // Owner should be marked as initialized 1397 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1398 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1399 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1400 scheduleWriteUser(userData); 1401 } 1402 userVersion = 2; 1403 } 1404 1405 1406 if (userVersion < 4) { 1407 userVersion = 4; 1408 } 1409 1410 if (userVersion < 5) { 1411 initDefaultGuestRestrictions(); 1412 userVersion = 5; 1413 } 1414 1415 if (userVersion < 6) { 1416 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1417 synchronized (mUsersLock) { 1418 for (int i = 0; i < mUsers.size(); i++) { 1419 UserData userData = mUsers.valueAt(i); 1420 // In non-split mode, only user 0 can have restricted profiles 1421 if (!splitSystemUser && userData.info.isRestricted() 1422 && (userData.info.restrictedProfileParentId 1423 == UserInfo.NO_PROFILE_GROUP_ID)) { 1424 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1425 scheduleWriteUser(userData); 1426 } 1427 } 1428 } 1429 userVersion = 6; 1430 } 1431 1432 if (userVersion < USER_VERSION) { 1433 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1434 + USER_VERSION); 1435 } else { 1436 mUserVersion = userVersion; 1437 1438 if (originalVersion < mUserVersion) { 1439 writeUserListLP(); 1440 } 1441 } 1442 } 1443 1444 private void fallbackToSingleUserLP() { 1445 int flags = UserInfo.FLAG_INITIALIZED; 1446 // In split system user mode, the admin and primary flags are assigned to the first human 1447 // user. 1448 if (!UserManager.isSplitSystemUser()) { 1449 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1450 } 1451 // Create the system user 1452 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, 1453 mContext.getResources().getString(com.android.internal.R.string.owner_name), null, 1454 flags); 1455 UserData userData = new UserData(); 1456 userData.info = system; 1457 synchronized (mUsersLock) { 1458 mUsers.put(system.id, userData); 1459 } 1460 mNextSerialNumber = MIN_USER_ID; 1461 mUserVersion = USER_VERSION; 1462 1463 Bundle restrictions = new Bundle(); 1464 synchronized (mRestrictionsLock) { 1465 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1466 } 1467 1468 updateUserIds(); 1469 initDefaultGuestRestrictions(); 1470 1471 writeUserListLP(); 1472 writeUserLP(userData); 1473 } 1474 1475 private void scheduleWriteUser(UserData UserData) { 1476 if (DBG) { 1477 debug("scheduleWriteUser"); 1478 } 1479 // No need to wrap it within a lock -- worst case, we'll just post the same message 1480 // twice. 1481 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1482 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1483 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1484 } 1485 } 1486 1487 /* 1488 * Writes the user file in this format: 1489 * 1490 * <user flags="20039023" id="0"> 1491 * <name>Primary</name> 1492 * </user> 1493 */ 1494 private void writeUserLP(UserData userData) { 1495 if (DBG) { 1496 debug("writeUserLP " + userData); 1497 } 1498 FileOutputStream fos = null; 1499 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1500 try { 1501 fos = userFile.startWrite(); 1502 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1503 1504 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1505 final XmlSerializer serializer = new FastXmlSerializer(); 1506 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1507 serializer.startDocument(null, true); 1508 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1509 1510 final UserInfo userInfo = userData.info; 1511 serializer.startTag(null, TAG_USER); 1512 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1513 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1514 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1515 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1516 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1517 Long.toString(userInfo.lastLoggedInTime)); 1518 if (userInfo.iconPath != null) { 1519 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1520 } 1521 if (userInfo.partial) { 1522 serializer.attribute(null, ATTR_PARTIAL, "true"); 1523 } 1524 if (userInfo.guestToRemove) { 1525 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1526 } 1527 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1528 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1529 Integer.toString(userInfo.profileGroupId)); 1530 } 1531 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1532 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1533 Integer.toString(userInfo.restrictedProfileParentId)); 1534 } 1535 // Write seed data 1536 if (userData.persistSeedData) { 1537 if (userData.seedAccountName != null) { 1538 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 1539 } 1540 if (userData.seedAccountType != null) { 1541 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 1542 } 1543 } 1544 serializer.startTag(null, TAG_NAME); 1545 serializer.text(userInfo.name); 1546 serializer.endTag(null, TAG_NAME); 1547 synchronized (mRestrictionsLock) { 1548 UserRestrictionsUtils.writeRestrictions(serializer, 1549 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1550 UserRestrictionsUtils.writeRestrictions(serializer, 1551 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1552 TAG_DEVICE_POLICY_RESTRICTIONS); 1553 } 1554 1555 if (userData.account != null) { 1556 serializer.startTag(null, TAG_ACCOUNT); 1557 serializer.text(userData.account); 1558 serializer.endTag(null, TAG_ACCOUNT); 1559 } 1560 1561 if (userData.persistSeedData && userData.seedAccountOptions != null) { 1562 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1563 userData.seedAccountOptions.saveToXml(serializer); 1564 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1565 } 1566 serializer.endTag(null, TAG_USER); 1567 1568 serializer.endDocument(); 1569 userFile.finishWrite(fos); 1570 } catch (Exception ioe) { 1571 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id + "\n" + ioe); 1572 userFile.failWrite(fos); 1573 } 1574 } 1575 1576 /* 1577 * Writes the user list file in this format: 1578 * 1579 * <users nextSerialNumber="3"> 1580 * <user id="0"></user> 1581 * <user id="2"></user> 1582 * </users> 1583 */ 1584 private void writeUserListLP() { 1585 if (DBG) { 1586 debug("writeUserList"); 1587 } 1588 FileOutputStream fos = null; 1589 AtomicFile userListFile = new AtomicFile(mUserListFile); 1590 try { 1591 fos = userListFile.startWrite(); 1592 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1593 1594 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1595 final XmlSerializer serializer = new FastXmlSerializer(); 1596 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1597 serializer.startDocument(null, true); 1598 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1599 1600 serializer.startTag(null, TAG_USERS); 1601 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1602 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1603 1604 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1605 synchronized (mGuestRestrictions) { 1606 UserRestrictionsUtils 1607 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1608 } 1609 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1610 synchronized (mRestrictionsLock) { 1611 UserRestrictionsUtils.writeRestrictions(serializer, 1612 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1613 } 1614 int[] userIdsToWrite; 1615 synchronized (mUsersLock) { 1616 userIdsToWrite = new int[mUsers.size()]; 1617 for (int i = 0; i < userIdsToWrite.length; i++) { 1618 UserInfo user = mUsers.valueAt(i).info; 1619 userIdsToWrite[i] = user.id; 1620 } 1621 } 1622 for (int id : userIdsToWrite) { 1623 serializer.startTag(null, TAG_USER); 1624 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1625 serializer.endTag(null, TAG_USER); 1626 } 1627 1628 serializer.endTag(null, TAG_USERS); 1629 1630 serializer.endDocument(); 1631 userListFile.finishWrite(fos); 1632 } catch (Exception e) { 1633 userListFile.failWrite(fos); 1634 Slog.e(LOG_TAG, "Error writing user list"); 1635 } 1636 } 1637 1638 private UserData readUserLP(int id) { 1639 int flags = 0; 1640 int serialNumber = id; 1641 String name = null; 1642 String account = null; 1643 String iconPath = null; 1644 long creationTime = 0L; 1645 long lastLoggedInTime = 0L; 1646 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 1647 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 1648 boolean partial = false; 1649 boolean guestToRemove = false; 1650 boolean persistSeedData = false; 1651 String seedAccountName = null; 1652 String seedAccountType = null; 1653 PersistableBundle seedAccountOptions = null; 1654 Bundle baseRestrictions = new Bundle(); 1655 Bundle localRestrictions = new Bundle(); 1656 1657 FileInputStream fis = null; 1658 try { 1659 AtomicFile userFile = 1660 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 1661 fis = userFile.openRead(); 1662 XmlPullParser parser = Xml.newPullParser(); 1663 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1664 int type; 1665 while ((type = parser.next()) != XmlPullParser.START_TAG 1666 && type != XmlPullParser.END_DOCUMENT) { 1667 // Skip 1668 } 1669 1670 if (type != XmlPullParser.START_TAG) { 1671 Slog.e(LOG_TAG, "Unable to read user " + id); 1672 return null; 1673 } 1674 1675 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 1676 int storedId = readIntAttribute(parser, ATTR_ID, -1); 1677 if (storedId != id) { 1678 Slog.e(LOG_TAG, "User id does not match the file name"); 1679 return null; 1680 } 1681 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 1682 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 1683 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 1684 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 1685 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 1686 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 1687 UserInfo.NO_PROFILE_GROUP_ID); 1688 restrictedProfileParentId = readIntAttribute(parser, 1689 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 1690 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 1691 if ("true".equals(valueString)) { 1692 partial = true; 1693 } 1694 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 1695 if ("true".equals(valueString)) { 1696 guestToRemove = true; 1697 } 1698 1699 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 1700 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 1701 if (seedAccountName != null || seedAccountType != null) { 1702 persistSeedData = true; 1703 } 1704 1705 int outerDepth = parser.getDepth(); 1706 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1707 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1708 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1709 continue; 1710 } 1711 String tag = parser.getName(); 1712 if (TAG_NAME.equals(tag)) { 1713 type = parser.next(); 1714 if (type == XmlPullParser.TEXT) { 1715 name = parser.getText(); 1716 } 1717 } else if (TAG_RESTRICTIONS.equals(tag)) { 1718 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 1719 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 1720 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 1721 } else if (TAG_ACCOUNT.equals(tag)) { 1722 type = parser.next(); 1723 if (type == XmlPullParser.TEXT) { 1724 account = parser.getText(); 1725 } 1726 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 1727 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 1728 persistSeedData = true; 1729 } 1730 } 1731 } 1732 1733 // Create the UserInfo object that gets passed around 1734 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 1735 userInfo.serialNumber = serialNumber; 1736 userInfo.creationTime = creationTime; 1737 userInfo.lastLoggedInTime = lastLoggedInTime; 1738 userInfo.partial = partial; 1739 userInfo.guestToRemove = guestToRemove; 1740 userInfo.profileGroupId = profileGroupId; 1741 userInfo.restrictedProfileParentId = restrictedProfileParentId; 1742 1743 // Create the UserData object that's internal to this class 1744 UserData userData = new UserData(); 1745 userData.info = userInfo; 1746 userData.account = account; 1747 userData.seedAccountName = seedAccountName; 1748 userData.seedAccountType = seedAccountType; 1749 userData.persistSeedData = persistSeedData; 1750 userData.seedAccountOptions = seedAccountOptions; 1751 1752 synchronized (mRestrictionsLock) { 1753 mBaseUserRestrictions.put(id, baseRestrictions); 1754 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 1755 } 1756 return userData; 1757 } catch (IOException ioe) { 1758 } catch (XmlPullParserException pe) { 1759 } finally { 1760 if (fis != null) { 1761 try { 1762 fis.close(); 1763 } catch (IOException e) { 1764 } 1765 } 1766 } 1767 return null; 1768 } 1769 1770 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1771 String valueString = parser.getAttributeValue(null, attr); 1772 if (valueString == null) return defaultValue; 1773 try { 1774 return Integer.parseInt(valueString); 1775 } catch (NumberFormatException nfe) { 1776 return defaultValue; 1777 } 1778 } 1779 1780 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1781 String valueString = parser.getAttributeValue(null, attr); 1782 if (valueString == null) return defaultValue; 1783 try { 1784 return Long.parseLong(valueString); 1785 } catch (NumberFormatException nfe) { 1786 return defaultValue; 1787 } 1788 } 1789 1790 /** 1791 * Removes the app restrictions file for a specific package and user id, if it exists. 1792 */ 1793 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1794 synchronized (mPackagesLock) { 1795 File dir = Environment.getUserSystemDirectory(userId); 1796 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1797 if (resFile.exists()) { 1798 resFile.delete(); 1799 } 1800 } 1801 } 1802 1803 @Override 1804 public UserInfo createProfileForUser(String name, int flags, int userId) { 1805 checkManageUsersPermission("Only the system can create users"); 1806 return createUserInternal(name, flags, userId); 1807 } 1808 1809 @Override 1810 public UserInfo createUser(String name, int flags) { 1811 checkManageUsersPermission("Only the system can create users"); 1812 return createUserInternal(name, flags, UserHandle.USER_NULL); 1813 } 1814 1815 private UserInfo createUserInternal(String name, int flags, int parentId) { 1816 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 1817 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1818 return null; 1819 } 1820 return createUserInternalUnchecked(name, flags, parentId); 1821 } 1822 1823 private UserInfo createUserInternalUnchecked(String name, int flags, int parentId) { 1824 if (ActivityManager.isLowRamDeviceStatic()) { 1825 return null; 1826 } 1827 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1828 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 1829 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 1830 final long ident = Binder.clearCallingIdentity(); 1831 UserInfo userInfo; 1832 UserData userData; 1833 final int userId; 1834 try { 1835 synchronized (mPackagesLock) { 1836 UserData parent = null; 1837 if (parentId != UserHandle.USER_NULL) { 1838 synchronized (mUsersLock) { 1839 parent = getUserDataLU(parentId); 1840 } 1841 if (parent == null) return null; 1842 } 1843 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 1844 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 1845 return null; 1846 } 1847 if (!isGuest && !isManagedProfile && isUserLimitReached()) { 1848 // If we're not adding a guest user or a managed profile and the limit has 1849 // been reached, cannot add a user. 1850 return null; 1851 } 1852 // If we're adding a guest and there already exists one, bail. 1853 if (isGuest && findCurrentGuestUser() != null) { 1854 return null; 1855 } 1856 // In legacy mode, restricted profile's parent can only be the owner user 1857 if (isRestricted && !UserManager.isSplitSystemUser() 1858 && (parentId != UserHandle.USER_SYSTEM)) { 1859 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 1860 return null; 1861 } 1862 if (isRestricted && UserManager.isSplitSystemUser()) { 1863 if (parent == null) { 1864 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 1865 + "specified"); 1866 return null; 1867 } 1868 if (!parent.info.canHaveProfile()) { 1869 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 1870 + "created for the specified parent user id " + parentId); 1871 return null; 1872 } 1873 } 1874 if (!UserManager.isSplitSystemUser() && (flags & UserInfo.FLAG_EPHEMERAL) != 0) { 1875 Log.e(LOG_TAG, 1876 "Ephemeral users are supported on split-system-user systems only."); 1877 return null; 1878 } 1879 // In split system user mode, we assign the first human user the primary flag. 1880 // And if there is no device owner, we also assign the admin flag to primary user. 1881 if (UserManager.isSplitSystemUser() 1882 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 1883 flags |= UserInfo.FLAG_PRIMARY; 1884 synchronized (mUsersLock) { 1885 if (!mIsDeviceManaged) { 1886 flags |= UserInfo.FLAG_ADMIN; 1887 } 1888 } 1889 } 1890 1891 userId = getNextAvailableId(); 1892 Environment.getUserSystemDirectory(userId).mkdirs(); 1893 boolean ephemeralGuests = Resources.getSystem() 1894 .getBoolean(com.android.internal.R.bool.config_guestUserEphemeral); 1895 1896 synchronized (mUsersLock) { 1897 // Add ephemeral flag to guests/users if required. Also inherit it from parent. 1898 if ((isGuest && ephemeralGuests) || mForceEphemeralUsers 1899 || (parent != null && parent.info.isEphemeral())) { 1900 flags |= UserInfo.FLAG_EPHEMERAL; 1901 } 1902 1903 userInfo = new UserInfo(userId, name, null, flags); 1904 userInfo.serialNumber = mNextSerialNumber++; 1905 long now = System.currentTimeMillis(); 1906 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1907 userInfo.partial = true; 1908 userData = new UserData(); 1909 userData.info = userInfo; 1910 mUsers.put(userId, userData); 1911 } 1912 writeUserListLP(); 1913 if (parent != null) { 1914 if (isManagedProfile) { 1915 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1916 parent.info.profileGroupId = parent.info.id; 1917 writeUserLP(parent); 1918 } 1919 userInfo.profileGroupId = parent.info.profileGroupId; 1920 } else if (isRestricted) { 1921 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 1922 parent.info.restrictedProfileParentId = parent.info.id; 1923 writeUserLP(parent); 1924 } 1925 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 1926 } 1927 } 1928 } 1929 final StorageManager storage = mContext.getSystemService(StorageManager.class); 1930 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 1931 prepareUserStorage(userId, userInfo.serialNumber, 1932 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 1933 mPm.createNewUser(userId); 1934 userInfo.partial = false; 1935 synchronized (mPackagesLock) { 1936 writeUserLP(userData); 1937 } 1938 updateUserIds(); 1939 Bundle restrictions = new Bundle(); 1940 if (isGuest) { 1941 synchronized (mGuestRestrictions) { 1942 restrictions.putAll(mGuestRestrictions); 1943 } 1944 } 1945 synchronized (mRestrictionsLock) { 1946 mBaseUserRestrictions.append(userId, restrictions); 1947 } 1948 mPm.newUserCreated(userId); 1949 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 1950 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 1951 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 1952 android.Manifest.permission.MANAGE_USERS); 1953 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 1954 } finally { 1955 Binder.restoreCallingIdentity(ident); 1956 } 1957 return userInfo; 1958 } 1959 1960 /** 1961 * @hide 1962 */ 1963 @Override 1964 public UserInfo createRestrictedProfile(String name, int parentUserId) { 1965 checkManageUsersPermission("setupRestrictedProfile"); 1966 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 1967 if (user == null) { 1968 return null; 1969 } 1970 long identity = Binder.clearCallingIdentity(); 1971 try { 1972 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 1973 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 1974 // the putIntForUser() will fail. 1975 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 1976 android.provider.Settings.Secure.LOCATION_MODE, 1977 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 1978 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 1979 } finally { 1980 Binder.restoreCallingIdentity(identity); 1981 } 1982 return user; 1983 } 1984 1985 /** 1986 * Find the current guest user. If the Guest user is partial, 1987 * then do not include it in the results as it is about to die. 1988 */ 1989 private UserInfo findCurrentGuestUser() { 1990 synchronized (mUsersLock) { 1991 final int size = mUsers.size(); 1992 for (int i = 0; i < size; i++) { 1993 final UserInfo user = mUsers.valueAt(i).info; 1994 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 1995 return user; 1996 } 1997 } 1998 } 1999 return null; 2000 } 2001 2002 /** 2003 * Mark this guest user for deletion to allow us to create another guest 2004 * and switch to that user before actually removing this guest. 2005 * @param userHandle the userid of the current guest 2006 * @return whether the user could be marked for deletion 2007 */ 2008 @Override 2009 public boolean markGuestForDeletion(int userHandle) { 2010 checkManageUsersPermission("Only the system can remove users"); 2011 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2012 UserManager.DISALLOW_REMOVE_USER, false)) { 2013 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2014 return false; 2015 } 2016 2017 long ident = Binder.clearCallingIdentity(); 2018 try { 2019 final UserData userData; 2020 synchronized (mPackagesLock) { 2021 synchronized (mUsersLock) { 2022 userData = mUsers.get(userHandle); 2023 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2024 return false; 2025 } 2026 } 2027 if (!userData.info.isGuest()) { 2028 return false; 2029 } 2030 // We set this to a guest user that is to be removed. This is a temporary state 2031 // where we are allowed to add new Guest users, even if this one is still not 2032 // removed. This user will still show up in getUserInfo() calls. 2033 // If we don't get around to removing this Guest user, it will be purged on next 2034 // startup. 2035 userData.info.guestToRemove = true; 2036 // Mark it as disabled, so that it isn't returned any more when 2037 // profiles are queried. 2038 userData.info.flags |= UserInfo.FLAG_DISABLED; 2039 writeUserLP(userData); 2040 } 2041 } finally { 2042 Binder.restoreCallingIdentity(ident); 2043 } 2044 return true; 2045 } 2046 2047 /** 2048 * Removes a user and all data directories created for that user. This method should be called 2049 * after the user's processes have been terminated. 2050 * @param userHandle the user's id 2051 */ 2052 @Override 2053 public boolean removeUser(int userHandle) { 2054 checkManageUsersPermission("Only the system can remove users"); 2055 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2056 UserManager.DISALLOW_REMOVE_USER, false)) { 2057 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2058 return false; 2059 } 2060 2061 long ident = Binder.clearCallingIdentity(); 2062 try { 2063 final UserData userData; 2064 int currentUser = ActivityManager.getCurrentUser(); 2065 if (currentUser == userHandle) { 2066 Log.w(LOG_TAG, "Current user cannot be removed"); 2067 return false; 2068 } 2069 synchronized (mPackagesLock) { 2070 synchronized (mUsersLock) { 2071 userData = mUsers.get(userHandle); 2072 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2073 return false; 2074 } 2075 2076 // We remember deleted user IDs to prevent them from being 2077 // reused during the current boot; they can still be reused 2078 // after a reboot. 2079 mRemovingUserIds.put(userHandle, true); 2080 } 2081 2082 try { 2083 mAppOpsService.removeUser(userHandle); 2084 } catch (RemoteException e) { 2085 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2086 } 2087 // Set this to a partially created user, so that the user will be purged 2088 // on next startup, in case the runtime stops now before stopping and 2089 // removing the user completely. 2090 userData.info.partial = true; 2091 // Mark it as disabled, so that it isn't returned any more when 2092 // profiles are queried. 2093 userData.info.flags |= UserInfo.FLAG_DISABLED; 2094 writeUserLP(userData); 2095 } 2096 2097 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2098 && userData.info.isManagedProfile()) { 2099 // Send broadcast to notify system that the user removed was a 2100 // managed user. 2101 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2102 } 2103 2104 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2105 int res; 2106 try { 2107 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 2108 new IStopUserCallback.Stub() { 2109 @Override 2110 public void userStopped(int userId) { 2111 finishRemoveUser(userId); 2112 } 2113 @Override 2114 public void userStopAborted(int userId) { 2115 } 2116 }); 2117 } catch (RemoteException e) { 2118 return false; 2119 } 2120 return res == ActivityManager.USER_OP_SUCCESS; 2121 } finally { 2122 Binder.restoreCallingIdentity(ident); 2123 } 2124 } 2125 2126 void finishRemoveUser(final int userHandle) { 2127 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2128 // Let other services shutdown any activity and clean up their state before completely 2129 // wiping the user's system directory and removing from the user list 2130 long ident = Binder.clearCallingIdentity(); 2131 try { 2132 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2133 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2134 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2135 android.Manifest.permission.MANAGE_USERS, 2136 2137 new BroadcastReceiver() { 2138 @Override 2139 public void onReceive(Context context, Intent intent) { 2140 if (DBG) { 2141 Slog.i(LOG_TAG, 2142 "USER_REMOVED broadcast sent, cleaning up user data " 2143 + userHandle); 2144 } 2145 new Thread() { 2146 @Override 2147 public void run() { 2148 // Clean up any ActivityManager state 2149 LocalServices.getService(ActivityManagerInternal.class) 2150 .onUserRemoved(userHandle); 2151 removeUserState(userHandle); 2152 } 2153 }.start(); 2154 } 2155 }, 2156 2157 null, Activity.RESULT_OK, null, null); 2158 } finally { 2159 Binder.restoreCallingIdentity(ident); 2160 } 2161 } 2162 2163 private void removeUserState(final int userHandle) { 2164 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2165 // Cleanup package manager settings 2166 mPm.cleanUpUser(this, userHandle); 2167 2168 // Remove this user from the list 2169 synchronized (mUsersLock) { 2170 mUsers.remove(userHandle); 2171 mIsUserManaged.delete(userHandle); 2172 } 2173 synchronized (mRestrictionsLock) { 2174 mBaseUserRestrictions.remove(userHandle); 2175 mAppliedUserRestrictions.remove(userHandle); 2176 mCachedEffectiveUserRestrictions.remove(userHandle); 2177 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2178 } 2179 // Remove user file 2180 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2181 userFile.delete(); 2182 // Update the user list 2183 synchronized (mPackagesLock) { 2184 writeUserListLP(); 2185 } 2186 updateUserIds(); 2187 File userDir = Environment.getUserSystemDirectory(userHandle); 2188 File renamedUserDir = Environment.getUserSystemDirectory(UserHandle.USER_NULL - userHandle); 2189 if (userDir.renameTo(renamedUserDir)) { 2190 removeDirectoryRecursive(renamedUserDir); 2191 } else { 2192 removeDirectoryRecursive(userDir); 2193 } 2194 } 2195 2196 private void removeDirectoryRecursive(File parent) { 2197 if (parent.isDirectory()) { 2198 String[] files = parent.list(); 2199 for (String filename : files) { 2200 File child = new File(parent, filename); 2201 removeDirectoryRecursive(child); 2202 } 2203 } 2204 parent.delete(); 2205 } 2206 2207 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2208 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2209 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2210 Intent.FLAG_RECEIVER_FOREGROUND); 2211 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2212 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2213 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2214 } 2215 2216 @Override 2217 public Bundle getApplicationRestrictions(String packageName) { 2218 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2219 } 2220 2221 @Override 2222 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2223 if (UserHandle.getCallingUserId() != userId 2224 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2225 checkSystemOrRoot("get application restrictions for other users/apps"); 2226 } 2227 synchronized (mPackagesLock) { 2228 // Read the restrictions from XML 2229 return readApplicationRestrictionsLP(packageName, userId); 2230 } 2231 } 2232 2233 @Override 2234 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2235 int userId) { 2236 checkSystemOrRoot("set application restrictions"); 2237 synchronized (mPackagesLock) { 2238 if (restrictions == null || restrictions.isEmpty()) { 2239 cleanAppRestrictionsForPackage(packageName, userId); 2240 } else { 2241 // Write the restrictions to XML 2242 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2243 } 2244 } 2245 2246 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2247 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2248 changeIntent.setPackage(packageName); 2249 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2250 mContext.sendBroadcastAsUser(changeIntent, UserHandle.of(userId)); 2251 } 2252 2253 private int getUidForPackage(String packageName) { 2254 long ident = Binder.clearCallingIdentity(); 2255 try { 2256 return mContext.getPackageManager().getApplicationInfo(packageName, 2257 PackageManager.MATCH_UNINSTALLED_PACKAGES).uid; 2258 } catch (NameNotFoundException nnfe) { 2259 return -1; 2260 } finally { 2261 Binder.restoreCallingIdentity(ident); 2262 } 2263 } 2264 2265 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2266 AtomicFile restrictionsFile = 2267 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2268 packageToRestrictionsFileName(packageName))); 2269 return readApplicationRestrictionsLP(restrictionsFile); 2270 } 2271 2272 @VisibleForTesting 2273 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2274 final Bundle restrictions = new Bundle(); 2275 final ArrayList<String> values = new ArrayList<>(); 2276 if (!restrictionsFile.getBaseFile().exists()) { 2277 return restrictions; 2278 } 2279 2280 FileInputStream fis = null; 2281 try { 2282 fis = restrictionsFile.openRead(); 2283 XmlPullParser parser = Xml.newPullParser(); 2284 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2285 XmlUtils.nextElement(parser); 2286 if (parser.getEventType() != XmlPullParser.START_TAG) { 2287 Slog.e(LOG_TAG, "Unable to read restrictions file " 2288 + restrictionsFile.getBaseFile()); 2289 return restrictions; 2290 } 2291 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2292 readEntry(restrictions, values, parser); 2293 } 2294 } catch (IOException|XmlPullParserException e) { 2295 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2296 } finally { 2297 IoUtils.closeQuietly(fis); 2298 } 2299 return restrictions; 2300 } 2301 2302 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2303 XmlPullParser parser) throws XmlPullParserException, IOException { 2304 int type = parser.getEventType(); 2305 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2306 String key = parser.getAttributeValue(null, ATTR_KEY); 2307 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2308 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2309 if (multiple != null) { 2310 values.clear(); 2311 int count = Integer.parseInt(multiple); 2312 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2313 if (type == XmlPullParser.START_TAG 2314 && parser.getName().equals(TAG_VALUE)) { 2315 values.add(parser.nextText().trim()); 2316 count--; 2317 } 2318 } 2319 String [] valueStrings = new String[values.size()]; 2320 values.toArray(valueStrings); 2321 restrictions.putStringArray(key, valueStrings); 2322 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2323 restrictions.putBundle(key, readBundleEntry(parser, values)); 2324 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2325 final int outerDepth = parser.getDepth(); 2326 ArrayList<Bundle> bundleList = new ArrayList<>(); 2327 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2328 Bundle childBundle = readBundleEntry(parser, values); 2329 bundleList.add(childBundle); 2330 } 2331 restrictions.putParcelableArray(key, 2332 bundleList.toArray(new Bundle[bundleList.size()])); 2333 } else { 2334 String value = parser.nextText().trim(); 2335 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2336 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2337 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2338 restrictions.putInt(key, Integer.parseInt(value)); 2339 } else { 2340 restrictions.putString(key, value); 2341 } 2342 } 2343 } 2344 } 2345 2346 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2347 throws IOException, XmlPullParserException { 2348 Bundle childBundle = new Bundle(); 2349 final int outerDepth = parser.getDepth(); 2350 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2351 readEntry(childBundle, values, parser); 2352 } 2353 return childBundle; 2354 } 2355 2356 private void writeApplicationRestrictionsLP(String packageName, 2357 Bundle restrictions, int userId) { 2358 AtomicFile restrictionsFile = new AtomicFile( 2359 new File(Environment.getUserSystemDirectory(userId), 2360 packageToRestrictionsFileName(packageName))); 2361 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2362 } 2363 2364 @VisibleForTesting 2365 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2366 FileOutputStream fos = null; 2367 try { 2368 fos = restrictionsFile.startWrite(); 2369 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2370 2371 final XmlSerializer serializer = new FastXmlSerializer(); 2372 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2373 serializer.startDocument(null, true); 2374 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2375 2376 serializer.startTag(null, TAG_RESTRICTIONS); 2377 writeBundle(restrictions, serializer); 2378 serializer.endTag(null, TAG_RESTRICTIONS); 2379 2380 serializer.endDocument(); 2381 restrictionsFile.finishWrite(fos); 2382 } catch (Exception e) { 2383 restrictionsFile.failWrite(fos); 2384 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2385 } 2386 } 2387 2388 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2389 throws IOException { 2390 for (String key : restrictions.keySet()) { 2391 Object value = restrictions.get(key); 2392 serializer.startTag(null, TAG_ENTRY); 2393 serializer.attribute(null, ATTR_KEY, key); 2394 2395 if (value instanceof Boolean) { 2396 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2397 serializer.text(value.toString()); 2398 } else if (value instanceof Integer) { 2399 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2400 serializer.text(value.toString()); 2401 } else if (value == null || value instanceof String) { 2402 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2403 serializer.text(value != null ? (String) value : ""); 2404 } else if (value instanceof Bundle) { 2405 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2406 writeBundle((Bundle) value, serializer); 2407 } else if (value instanceof Parcelable[]) { 2408 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2409 Parcelable[] array = (Parcelable[]) value; 2410 for (Parcelable parcelable : array) { 2411 if (!(parcelable instanceof Bundle)) { 2412 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2413 } 2414 serializer.startTag(null, TAG_ENTRY); 2415 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2416 writeBundle((Bundle) parcelable, serializer); 2417 serializer.endTag(null, TAG_ENTRY); 2418 } 2419 } else { 2420 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2421 String[] values = (String[]) value; 2422 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2423 for (String choice : values) { 2424 serializer.startTag(null, TAG_VALUE); 2425 serializer.text(choice != null ? choice : ""); 2426 serializer.endTag(null, TAG_VALUE); 2427 } 2428 } 2429 serializer.endTag(null, TAG_ENTRY); 2430 } 2431 } 2432 2433 @Override 2434 public int getUserSerialNumber(int userHandle) { 2435 synchronized (mUsersLock) { 2436 if (!exists(userHandle)) return -1; 2437 return getUserInfoLU(userHandle).serialNumber; 2438 } 2439 } 2440 2441 @Override 2442 public int getUserHandle(int userSerialNumber) { 2443 synchronized (mUsersLock) { 2444 for (int userId : mUserIds) { 2445 UserInfo info = getUserInfoLU(userId); 2446 if (info != null && info.serialNumber == userSerialNumber) return userId; 2447 } 2448 // Not found 2449 return -1; 2450 } 2451 } 2452 2453 @Override 2454 public long getUserCreationTime(int userHandle) { 2455 int callingUserId = UserHandle.getCallingUserId(); 2456 UserInfo userInfo = null; 2457 synchronized (mUsersLock) { 2458 if (callingUserId == userHandle) { 2459 userInfo = getUserInfoLU(userHandle); 2460 } else { 2461 UserInfo parent = getProfileParentLU(userHandle); 2462 if (parent != null && parent.id == callingUserId) { 2463 userInfo = getUserInfoLU(userHandle); 2464 } 2465 } 2466 } 2467 if (userInfo == null) { 2468 throw new SecurityException("userHandle can only be the calling user or a managed " 2469 + "profile associated with this user"); 2470 } 2471 return userInfo.creationTime; 2472 } 2473 2474 /** 2475 * Caches the list of user ids in an array, adjusting the array size when necessary. 2476 */ 2477 private void updateUserIds() { 2478 int num = 0; 2479 synchronized (mUsersLock) { 2480 final int userSize = mUsers.size(); 2481 for (int i = 0; i < userSize; i++) { 2482 if (!mUsers.valueAt(i).info.partial) { 2483 num++; 2484 } 2485 } 2486 final int[] newUsers = new int[num]; 2487 int n = 0; 2488 for (int i = 0; i < userSize; i++) { 2489 if (!mUsers.valueAt(i).info.partial) { 2490 newUsers[n++] = mUsers.keyAt(i); 2491 } 2492 } 2493 mUserIds = newUsers; 2494 } 2495 } 2496 2497 /** 2498 * Prepare storage areas for given user on all mounted devices. 2499 */ 2500 private void prepareUserStorage(int userId, int userSerial, int flags) { 2501 final StorageManager storage = mContext.getSystemService(StorageManager.class); 2502 for (VolumeInfo vol : storage.getWritablePrivateVolumes()) { 2503 final String volumeUuid = vol.getFsUuid(); 2504 storage.prepareUserStorage(volumeUuid, userId, userSerial, flags); 2505 } 2506 } 2507 2508 /** 2509 * Called right before a user is started. This gives us a chance to prepare 2510 * app storage and apply any user restrictions. 2511 */ 2512 public void onBeforeStartUser(int userId) { 2513 final int userSerial = getUserSerialNumber(userId); 2514 prepareUserStorage(userId, userSerial, StorageManager.FLAG_STORAGE_DE); 2515 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_DE); 2516 2517 if (userId != UserHandle.USER_SYSTEM) { 2518 synchronized (mRestrictionsLock) { 2519 applyUserRestrictionsLR(userId); 2520 } 2521 } 2522 } 2523 2524 /** 2525 * Called right before a user is unlocked. This gives us a chance to prepare 2526 * app storage. 2527 */ 2528 public void onBeforeUnlockUser(int userId) { 2529 final int userSerial = getUserSerialNumber(userId); 2530 prepareUserStorage(userId, userSerial, StorageManager.FLAG_STORAGE_CE); 2531 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_CE); 2532 } 2533 2534 /** 2535 * Make a note of the last started time of a user and do some cleanup. 2536 * @param userId the user that was just foregrounded 2537 */ 2538 public void onUserForeground(int userId) { 2539 UserData userData = getUserDataNoChecks(userId); 2540 if (userData == null || userData.info.partial) { 2541 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2542 return; 2543 } 2544 long now = System.currentTimeMillis(); 2545 if (now > EPOCH_PLUS_30_YEARS) { 2546 userData.info.lastLoggedInTime = now; 2547 scheduleWriteUser(userData); 2548 } 2549 } 2550 2551 /** 2552 * Returns the next available user id, filling in any holes in the ids. 2553 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2554 * for data and battery stats collection, or unexpected cross-talk. 2555 */ 2556 private int getNextAvailableId() { 2557 synchronized (mUsersLock) { 2558 int i = MIN_USER_ID; 2559 while (i < MAX_USER_ID) { 2560 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2561 return i; 2562 } 2563 i++; 2564 } 2565 } 2566 throw new IllegalStateException("No user id available!"); 2567 } 2568 2569 private String packageToRestrictionsFileName(String packageName) { 2570 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2571 } 2572 2573 /** 2574 * Enforce that serial number stored in user directory inode matches the 2575 * given expected value. Gracefully sets the serial number if currently 2576 * undefined. 2577 * 2578 * @throws IOException when problem extracting serial number, or serial 2579 * number is mismatched. 2580 */ 2581 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2582 final int foundSerial = getSerialNumber(file); 2583 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 2584 2585 if (foundSerial == -1) { 2586 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 2587 try { 2588 setSerialNumber(file, serialNumber); 2589 } catch (IOException e) { 2590 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 2591 } 2592 2593 } else if (foundSerial != serialNumber) { 2594 throw new IOException("Found serial number " + foundSerial 2595 + " doesn't match expected " + serialNumber); 2596 } 2597 } 2598 2599 /** 2600 * Set serial number stored in user directory inode. 2601 * 2602 * @throws IOException if serial number was already set 2603 */ 2604 private static void setSerialNumber(File file, int serialNumber) 2605 throws IOException { 2606 try { 2607 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 2608 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 2609 } catch (ErrnoException e) { 2610 throw e.rethrowAsIOException(); 2611 } 2612 } 2613 2614 /** 2615 * Return serial number stored in user directory inode. 2616 * 2617 * @return parsed serial number, or -1 if not set 2618 */ 2619 private static int getSerialNumber(File file) throws IOException { 2620 try { 2621 final byte[] buf = new byte[256]; 2622 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 2623 final String serial = new String(buf, 0, len); 2624 try { 2625 return Integer.parseInt(serial); 2626 } catch (NumberFormatException e) { 2627 throw new IOException("Bad serial number: " + serial); 2628 } 2629 } catch (ErrnoException e) { 2630 if (e.errno == OsConstants.ENODATA) { 2631 return -1; 2632 } else { 2633 throw e.rethrowAsIOException(); 2634 } 2635 } 2636 } 2637 2638 @Override 2639 public void setSeedAccountData(int userId, String accountName, String accountType, 2640 PersistableBundle accountOptions, boolean persist) { 2641 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 2642 synchronized (mPackagesLock) { 2643 final UserData userData; 2644 synchronized (mUsersLock) { 2645 userData = getUserDataLU(userId); 2646 if (userData == null) { 2647 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 2648 return; 2649 } 2650 userData.seedAccountName = accountName; 2651 userData.seedAccountType = accountType; 2652 userData.seedAccountOptions = accountOptions; 2653 userData.persistSeedData = persist; 2654 } 2655 if (persist) { 2656 writeUserLP(userData); 2657 } 2658 } 2659 } 2660 2661 @Override 2662 public String getSeedAccountName() throws RemoteException { 2663 checkManageUsersPermission("Cannot get seed account information"); 2664 synchronized (mUsersLock) { 2665 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2666 return userData.seedAccountName; 2667 } 2668 } 2669 2670 @Override 2671 public String getSeedAccountType() throws RemoteException { 2672 checkManageUsersPermission("Cannot get seed account information"); 2673 synchronized (mUsersLock) { 2674 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2675 return userData.seedAccountType; 2676 } 2677 } 2678 2679 @Override 2680 public PersistableBundle getSeedAccountOptions() throws RemoteException { 2681 checkManageUsersPermission("Cannot get seed account information"); 2682 synchronized (mUsersLock) { 2683 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2684 return userData.seedAccountOptions; 2685 } 2686 } 2687 2688 @Override 2689 public void clearSeedAccountData() throws RemoteException { 2690 checkManageUsersPermission("Cannot clear seed account information"); 2691 synchronized (mPackagesLock) { 2692 UserData userData; 2693 synchronized (mUsersLock) { 2694 userData = getUserDataLU(UserHandle.getCallingUserId()); 2695 if (userData == null) return; 2696 userData.clearSeedAccountData(); 2697 } 2698 writeUserLP(userData); 2699 } 2700 } 2701 2702 @Override 2703 public boolean someUserHasSeedAccount(String accountName, String accountType) 2704 throws RemoteException { 2705 checkManageUsersPermission("Cannot check seed account information"); 2706 synchronized (mUsersLock) { 2707 final int userSize = mUsers.size(); 2708 for (int i = 0; i < userSize; i++) { 2709 final UserData data = mUsers.valueAt(i); 2710 if (data.info.isInitialized()) continue; 2711 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 2712 continue; 2713 } 2714 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 2715 continue; 2716 } 2717 return true; 2718 } 2719 } 2720 return false; 2721 } 2722 2723 @Override 2724 public void onShellCommand(FileDescriptor in, FileDescriptor out, 2725 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 2726 (new Shell()).exec(this, in, out, err, args, resultReceiver); 2727 } 2728 2729 int onShellCommand(Shell shell, String cmd) { 2730 if (cmd == null) { 2731 return shell.handleDefaultCommands(cmd); 2732 } 2733 2734 final PrintWriter pw = shell.getOutPrintWriter(); 2735 try { 2736 switch(cmd) { 2737 case "list": 2738 return runList(pw); 2739 } 2740 } catch (RemoteException e) { 2741 pw.println("Remote exception: " + e); 2742 } 2743 return -1; 2744 } 2745 2746 private int runList(PrintWriter pw) throws RemoteException { 2747 final IActivityManager am = ActivityManagerNative.getDefault(); 2748 final List<UserInfo> users = getUsers(false); 2749 if (users == null) { 2750 pw.println("Error: couldn't get users"); 2751 return 1; 2752 } else { 2753 pw.println("Users:"); 2754 for (int i = 0; i < users.size(); i++) { 2755 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 2756 pw.println("\t" + users.get(i).toString() + running); 2757 } 2758 return 0; 2759 } 2760 } 2761 2762 @Override 2763 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2764 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2765 != PackageManager.PERMISSION_GRANTED) { 2766 pw.println("Permission Denial: can't dump UserManager from from pid=" 2767 + Binder.getCallingPid() 2768 + ", uid=" + Binder.getCallingUid() 2769 + " without permission " 2770 + android.Manifest.permission.DUMP); 2771 return; 2772 } 2773 2774 long now = System.currentTimeMillis(); 2775 StringBuilder sb = new StringBuilder(); 2776 synchronized (mPackagesLock) { 2777 synchronized (mUsersLock) { 2778 pw.println("Users:"); 2779 for (int i = 0; i < mUsers.size(); i++) { 2780 UserData userData = mUsers.valueAt(i); 2781 if (userData == null) { 2782 continue; 2783 } 2784 UserInfo userInfo = userData.info; 2785 final int userId = userInfo.id; 2786 pw.print(" "); pw.print(userInfo); 2787 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 2788 if (mRemovingUserIds.get(userId)) { 2789 pw.print(" <removing> "); 2790 } 2791 if (userInfo.partial) { 2792 pw.print(" <partial>"); 2793 } 2794 pw.println(); 2795 pw.print(" Created: "); 2796 if (userInfo.creationTime == 0) { 2797 pw.println("<unknown>"); 2798 } else { 2799 sb.setLength(0); 2800 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 2801 sb.append(" ago"); 2802 pw.println(sb); 2803 } 2804 pw.print(" Last logged in: "); 2805 if (userInfo.lastLoggedInTime == 0) { 2806 pw.println("<unknown>"); 2807 } else { 2808 sb.setLength(0); 2809 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 2810 sb.append(" ago"); 2811 pw.println(sb); 2812 } 2813 pw.print(" Has profile owner: "); 2814 pw.println(mIsUserManaged.get(userId)); 2815 pw.println(" Restrictions:"); 2816 synchronized (mRestrictionsLock) { 2817 UserRestrictionsUtils.dumpRestrictions( 2818 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 2819 pw.println(" Device policy local restrictions:"); 2820 UserRestrictionsUtils.dumpRestrictions( 2821 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 2822 pw.println(" Effective restrictions:"); 2823 UserRestrictionsUtils.dumpRestrictions( 2824 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 2825 } 2826 2827 if (userData.account != null) { 2828 pw.print(" Account name: " + userData.account); 2829 pw.println(); 2830 } 2831 2832 if (userData.seedAccountName != null) { 2833 pw.print(" Seed account name: " + userData.seedAccountName); 2834 pw.println(); 2835 if (userData.seedAccountType != null) { 2836 pw.print(" account type: " + userData.seedAccountType); 2837 pw.println(); 2838 } 2839 if (userData.seedAccountOptions != null) { 2840 pw.print(" account options exist"); 2841 pw.println(); 2842 } 2843 } 2844 } 2845 } 2846 pw.println(); 2847 pw.println(" Device policy global restrictions:"); 2848 synchronized (mRestrictionsLock) { 2849 UserRestrictionsUtils 2850 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 2851 } 2852 pw.println(); 2853 pw.println(" Guest restrictions:"); 2854 synchronized (mGuestRestrictions) { 2855 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 2856 } 2857 synchronized (mUsersLock) { 2858 pw.println(); 2859 pw.println(" Device managed: " + mIsDeviceManaged); 2860 } 2861 // Dump some capabilities 2862 pw.println(); 2863 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 2864 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 2865 pw.println(" All guests ephemeral: " + Resources.getSystem().getBoolean( 2866 com.android.internal.R.bool.config_guestUserEphemeral)); 2867 } 2868 } 2869 2870 final class MainHandler extends Handler { 2871 2872 @Override 2873 public void handleMessage(Message msg) { 2874 switch (msg.what) { 2875 case WRITE_USER_MSG: 2876 removeMessages(WRITE_USER_MSG, msg.obj); 2877 synchronized (mPackagesLock) { 2878 int userId = ((UserData) msg.obj).info.id; 2879 UserData userData = getUserDataNoChecks(userId); 2880 if (userData != null) { 2881 writeUserLP(userData); 2882 } 2883 } 2884 } 2885 } 2886 } 2887 2888 /** 2889 * @param userId 2890 * @return whether the user has been initialized yet 2891 */ 2892 boolean isInitialized(int userId) { 2893 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 2894 } 2895 2896 private class LocalService extends UserManagerInternal { 2897 @Override 2898 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 2899 @Nullable Bundle globalRestrictions) { 2900 UserManagerService.this.setDevicePolicyUserRestrictionsInner(userId, localRestrictions, 2901 globalRestrictions); 2902 } 2903 2904 @Override 2905 public Bundle getBaseUserRestrictions(int userId) { 2906 synchronized (mRestrictionsLock) { 2907 return mBaseUserRestrictions.get(userId); 2908 } 2909 } 2910 2911 @Override 2912 public void setBaseUserRestrictionsByDpmsForMigration( 2913 int userId, Bundle baseRestrictions) { 2914 synchronized (mRestrictionsLock) { 2915 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 2916 invalidateEffectiveUserRestrictionsLR(userId); 2917 } 2918 2919 final UserData userData = getUserDataNoChecks(userId); 2920 synchronized (mPackagesLock) { 2921 if (userData != null) { 2922 writeUserLP(userData); 2923 } else { 2924 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 2925 } 2926 } 2927 } 2928 2929 @Override 2930 public boolean getUserRestriction(int userId, String key) { 2931 return getUserRestrictions(userId).getBoolean(key); 2932 } 2933 2934 @Override 2935 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 2936 synchronized (mUserRestrictionsListeners) { 2937 mUserRestrictionsListeners.add(listener); 2938 } 2939 } 2940 2941 @Override 2942 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 2943 synchronized (mUserRestrictionsListeners) { 2944 mUserRestrictionsListeners.remove(listener); 2945 } 2946 } 2947 2948 @Override 2949 public void setDeviceManaged(boolean isManaged) { 2950 synchronized (mUsersLock) { 2951 mIsDeviceManaged = isManaged; 2952 } 2953 } 2954 2955 @Override 2956 public void setUserManaged(int userId, boolean isManaged) { 2957 synchronized (mUsersLock) { 2958 mIsUserManaged.put(userId, isManaged); 2959 } 2960 } 2961 2962 @Override 2963 public void setUserIcon(int userId, Bitmap bitmap) { 2964 long ident = Binder.clearCallingIdentity(); 2965 try { 2966 synchronized (mPackagesLock) { 2967 UserData userData = getUserDataNoChecks(userId); 2968 if (userData == null || userData.info.partial) { 2969 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 2970 return; 2971 } 2972 writeBitmapLP(userData.info, bitmap); 2973 writeUserLP(userData); 2974 } 2975 sendUserInfoChangedBroadcast(userId); 2976 } finally { 2977 Binder.restoreCallingIdentity(ident); 2978 } 2979 } 2980 2981 @Override 2982 public void setForceEphemeralUsers(boolean forceEphemeralUsers) { 2983 synchronized (mUsersLock) { 2984 mForceEphemeralUsers = forceEphemeralUsers; 2985 } 2986 } 2987 2988 @Override 2989 public void removeAllUsers() { 2990 if (UserHandle.USER_SYSTEM == ActivityManager.getCurrentUser()) { 2991 // Remove the non-system users straight away. 2992 removeNonSystemUsers(); 2993 } else { 2994 // Switch to the system user first and then remove the other users. 2995 BroadcastReceiver userSwitchedReceiver = new BroadcastReceiver() { 2996 @Override 2997 public void onReceive(Context context, Intent intent) { 2998 int userId = 2999 intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3000 if (userId != UserHandle.USER_SYSTEM) { 3001 return; 3002 } 3003 mContext.unregisterReceiver(this); 3004 removeNonSystemUsers(); 3005 } 3006 }; 3007 IntentFilter userSwitchedFilter = new IntentFilter(); 3008 userSwitchedFilter.addAction(Intent.ACTION_USER_SWITCHED); 3009 mContext.registerReceiver( 3010 userSwitchedReceiver, userSwitchedFilter, null, mHandler); 3011 3012 // Switch to the system user. 3013 ActivityManager am = 3014 (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 3015 am.switchUser(UserHandle.USER_SYSTEM); 3016 } 3017 } 3018 3019 @Override 3020 public void onEphemeralUserStop(int userId) { 3021 synchronized (mUsersLock) { 3022 UserInfo userInfo = getUserInfoLU(userId); 3023 if (userInfo != null && userInfo.isEphemeral()) { 3024 // Do not allow switching back to the ephemeral user again as the user is going 3025 // to be deleted. 3026 userInfo.flags |= UserInfo.FLAG_DISABLED; 3027 if (userInfo.isGuest()) { 3028 // Indicate that the guest will be deleted after it stops. 3029 userInfo.guestToRemove = true; 3030 } 3031 } 3032 } 3033 } 3034 3035 @Override 3036 public UserInfo createUserEvenWhenDisallowed(String name, int flags) { 3037 UserInfo user = createUserInternalUnchecked(name, flags, UserHandle.USER_NULL); 3038 // Keep this in sync with UserManager.createUser 3039 if (user != null && !user.isAdmin()) { 3040 setUserRestriction(UserManager.DISALLOW_SMS, true, user.id); 3041 setUserRestriction(UserManager.DISALLOW_OUTGOING_CALLS, true, user.id); 3042 } 3043 return user; 3044 } 3045 } 3046 3047 /* Remove all the users except of the system one. */ 3048 private void removeNonSystemUsers() { 3049 ArrayList<UserInfo> usersToRemove = new ArrayList<>(); 3050 synchronized (mUsersLock) { 3051 final int userSize = mUsers.size(); 3052 for (int i = 0; i < userSize; i++) { 3053 UserInfo ui = mUsers.valueAt(i).info; 3054 if (ui.id != UserHandle.USER_SYSTEM) { 3055 usersToRemove.add(ui); 3056 } 3057 } 3058 } 3059 for (UserInfo ui: usersToRemove) { 3060 removeUser(ui.id); 3061 } 3062 } 3063 3064 private class Shell extends ShellCommand { 3065 @Override 3066 public int onCommand(String cmd) { 3067 return onShellCommand(this, cmd); 3068 } 3069 3070 @Override 3071 public void onHelp() { 3072 final PrintWriter pw = getOutPrintWriter(); 3073 pw.println("User manager (user) commands:"); 3074 pw.println(" help"); 3075 pw.println(" Print this help text."); 3076 pw.println(""); 3077 pw.println(" list"); 3078 pw.println(" Prints all users on the system."); 3079 } 3080 } 3081 3082 private static void debug(String message) { 3083 Log.d(LOG_TAG, message + 3084 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 3085 } 3086} 3087