UserManagerService.java revision 5fd967d263ae8f12665eba072d949b140d13695e
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.pm; 18 19import static android.content.Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS; 20import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK; 21 22import android.Manifest; 23import android.annotation.NonNull; 24import android.annotation.Nullable; 25import android.annotation.UserIdInt; 26import android.app.Activity; 27import android.app.ActivityManager; 28import android.app.ActivityManagerInternal; 29import android.app.ActivityManagerNative; 30import android.app.AppGlobals; 31import android.app.IActivityManager; 32import android.app.IStopUserCallback; 33import android.app.KeyguardManager; 34import android.app.PendingIntent; 35import android.content.BroadcastReceiver; 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.IntentFilter; 40import android.content.IntentSender; 41import android.content.pm.IPackageManager; 42import android.content.pm.PackageManager; 43import android.content.pm.PackageManager.NameNotFoundException; 44import android.content.pm.UserInfo; 45import android.content.res.Resources; 46import android.graphics.Bitmap; 47import android.os.Binder; 48import android.os.Build; 49import android.os.Bundle; 50import android.os.Debug; 51import android.os.Environment; 52import android.os.FileUtils; 53import android.os.Handler; 54import android.os.IBinder; 55import android.os.IUserManager; 56import android.os.Message; 57import android.os.ParcelFileDescriptor; 58import android.os.Parcelable; 59import android.os.PersistableBundle; 60import android.os.Process; 61import android.os.RemoteException; 62import android.os.ResultReceiver; 63import android.os.SELinux; 64import android.os.ServiceManager; 65import android.os.ShellCommand; 66import android.os.UserHandle; 67import android.os.UserManager; 68import android.os.UserManagerInternal; 69import android.os.UserManagerInternal.UserRestrictionsListener; 70import android.os.storage.StorageManager; 71import android.security.GateKeeper; 72import android.service.gatekeeper.IGateKeeperService; 73import android.system.ErrnoException; 74import android.system.Os; 75import android.system.OsConstants; 76import android.text.TextUtils; 77import android.util.AtomicFile; 78import android.util.IntArray; 79import android.util.Log; 80import android.util.Slog; 81import android.util.SparseArray; 82import android.util.SparseBooleanArray; 83import android.util.SparseIntArray; 84import android.util.TimeUtils; 85import android.util.Xml; 86 87import com.android.internal.annotations.GuardedBy; 88import com.android.internal.annotations.VisibleForTesting; 89import com.android.internal.app.IAppOpsService; 90import com.android.internal.logging.MetricsLogger; 91import com.android.internal.util.FastXmlSerializer; 92import com.android.internal.util.Preconditions; 93import com.android.internal.util.XmlUtils; 94import com.android.internal.widget.LockPatternUtils; 95import com.android.server.LocalServices; 96import com.android.server.SystemService; 97import com.android.server.am.UserState; 98 99import libcore.io.IoUtils; 100import libcore.util.Objects; 101 102import org.xmlpull.v1.XmlPullParser; 103import org.xmlpull.v1.XmlPullParserException; 104import org.xmlpull.v1.XmlSerializer; 105 106import java.io.BufferedOutputStream; 107import java.io.File; 108import java.io.FileDescriptor; 109import java.io.FileInputStream; 110import java.io.FileNotFoundException; 111import java.io.FileOutputStream; 112import java.io.IOException; 113import java.io.PrintWriter; 114import java.nio.charset.StandardCharsets; 115import java.util.ArrayList; 116import java.util.List; 117 118/** 119 * Service for {@link UserManager}. 120 * 121 * Method naming convention: 122 * <ul> 123 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 124 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 125 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 126 * </ul> 127 */ 128public class UserManagerService extends IUserManager.Stub { 129 130 private static final String LOG_TAG = "UserManagerService"; 131 static final boolean DBG = false; // DO NOT SUBMIT WITH TRUE 132 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 133 134 private static final String TAG_NAME = "name"; 135 private static final String TAG_ACCOUNT = "account"; 136 private static final String ATTR_FLAGS = "flags"; 137 private static final String ATTR_ICON_PATH = "icon"; 138 private static final String ATTR_ID = "id"; 139 private static final String ATTR_CREATION_TIME = "created"; 140 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 141 private static final String ATTR_LAST_LOGGED_IN_FINGERPRINT = "lastLoggedInFingerprint"; 142 private static final String ATTR_SERIAL_NO = "serialNumber"; 143 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 144 private static final String ATTR_PARTIAL = "partial"; 145 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 146 private static final String ATTR_USER_VERSION = "version"; 147 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 148 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 149 private static final String ATTR_SEED_ACCOUNT_NAME = "seedAccountName"; 150 private static final String ATTR_SEED_ACCOUNT_TYPE = "seedAccountType"; 151 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 152 private static final String TAG_USERS = "users"; 153 private static final String TAG_USER = "user"; 154 private static final String TAG_RESTRICTIONS = "restrictions"; 155 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 156 private static final String TAG_GLOBAL_RESTRICTION_OWNER_ID = "globalRestrictionOwnerUserId"; 157 private static final String TAG_ENTRY = "entry"; 158 private static final String TAG_VALUE = "value"; 159 private static final String TAG_SEED_ACCOUNT_OPTIONS = "seedAccountOptions"; 160 private static final String ATTR_KEY = "key"; 161 private static final String ATTR_VALUE_TYPE = "type"; 162 private static final String ATTR_MULTIPLE = "m"; 163 164 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 165 private static final String ATTR_TYPE_STRING = "s"; 166 private static final String ATTR_TYPE_BOOLEAN = "b"; 167 private static final String ATTR_TYPE_INTEGER = "i"; 168 private static final String ATTR_TYPE_BUNDLE = "B"; 169 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 170 171 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 172 private static final String USER_LIST_FILENAME = "userlist.xml"; 173 private static final String USER_PHOTO_FILENAME = "photo.png"; 174 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 175 176 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 177 private static final String XML_SUFFIX = ".xml"; 178 179 private static final int ALLOWED_FLAGS_FOR_CREATE_USERS_PERMISSION = 180 UserInfo.FLAG_MANAGED_PROFILE 181 | UserInfo.FLAG_EPHEMERAL 182 | UserInfo.FLAG_RESTRICTED 183 | UserInfo.FLAG_GUEST; 184 185 private static final int MIN_USER_ID = 10; 186 // We need to keep process uid within Integer.MAX_VALUE. 187 private static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 188 189 private static final int USER_VERSION = 6; 190 191 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 192 193 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 194 // without first making sure that the rest of the framework is prepared for it. 195 private static final int MAX_MANAGED_PROFILES = 1; 196 197 static final int WRITE_USER_MSG = 1; 198 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 199 200 private static final String XATTR_SERIAL = "user.serial"; 201 202 // Tron counters 203 private static final String TRON_GUEST_CREATED = "users_guest_created"; 204 private static final String TRON_USER_CREATED = "users_user_created"; 205 206 private final Context mContext; 207 private final PackageManagerService mPm; 208 private final Object mPackagesLock; 209 // Short-term lock for internal state, when interaction/sync with PM is not required 210 private final Object mUsersLock = new Object(); 211 private final Object mRestrictionsLock = new Object(); 212 213 private final Handler mHandler; 214 215 private final File mUsersDir; 216 private final File mUserListFile; 217 218 private static final IBinder mUserRestriconToken = new Binder(); 219 220 /** 221 * User-related information that is used for persisting to flash. Only UserInfo is 222 * directly exposed to other system apps. 223 */ 224 private static class UserData { 225 // Basic user information and properties 226 UserInfo info; 227 // Account name used when there is a strong association between a user and an account 228 String account; 229 // Account information for seeding into a newly created user. This could also be 230 // used for login validation for an existing user, for updating their credentials. 231 // In the latter case, data may not need to be persisted as it is only valid for the 232 // current login session. 233 String seedAccountName; 234 String seedAccountType; 235 PersistableBundle seedAccountOptions; 236 // Whether to perist the seed account information to be available after a boot 237 boolean persistSeedData; 238 239 void clearSeedAccountData() { 240 seedAccountName = null; 241 seedAccountType = null; 242 seedAccountOptions = null; 243 persistSeedData = false; 244 } 245 } 246 247 @GuardedBy("mUsersLock") 248 private final SparseArray<UserData> mUsers = new SparseArray<>(); 249 250 /** 251 * User restrictions set via UserManager. This doesn't include restrictions set by 252 * device owner / profile owners. 253 * 254 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 255 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 256 * maybe shared between {@link #mBaseUserRestrictions} and 257 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 258 * (Otherwise we won't be able to detect what restrictions have changed in 259 * {@link #updateUserRestrictionsInternalLR}. 260 */ 261 @GuardedBy("mRestrictionsLock") 262 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 263 264 /** 265 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 266 * with device / profile owner restrictions. We'll initialize it lazily; use 267 * {@link #getEffectiveUserRestrictions} to access it. 268 * 269 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 270 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 271 * maybe shared between {@link #mBaseUserRestrictions} and 272 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 273 * (Otherwise we won't be able to detect what restrictions have changed in 274 * {@link #updateUserRestrictionsInternalLR}. 275 */ 276 @GuardedBy("mRestrictionsLock") 277 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 278 279 /** 280 * User restrictions that have already been applied in 281 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 282 * that have changed since the last 283 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 284 */ 285 @GuardedBy("mRestrictionsLock") 286 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 287 288 /** 289 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 290 * that should be applied to all users, including guests. 291 */ 292 @GuardedBy("mRestrictionsLock") 293 private Bundle mDevicePolicyGlobalUserRestrictions; 294 295 /** 296 * Id of the user that set global restrictions. 297 */ 298 @GuardedBy("mRestrictionsLock") 299 private int mGlobalRestrictionOwnerUserId = UserHandle.USER_NULL; 300 301 /** 302 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 303 * for each user. 304 */ 305 @GuardedBy("mRestrictionsLock") 306 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 307 308 @GuardedBy("mGuestRestrictions") 309 private final Bundle mGuestRestrictions = new Bundle(); 310 311 /** 312 * Set of user IDs being actively removed. Removed IDs linger in this set 313 * for several seconds to work around a VFS caching issue. 314 */ 315 @GuardedBy("mUsersLock") 316 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 317 318 @GuardedBy("mUsersLock") 319 private int[] mUserIds; 320 @GuardedBy("mPackagesLock") 321 private int mNextSerialNumber; 322 private int mUserVersion = 0; 323 324 private IAppOpsService mAppOpsService; 325 326 private final LocalService mLocalService; 327 328 @GuardedBy("mUsersLock") 329 private boolean mIsDeviceManaged; 330 331 @GuardedBy("mUsersLock") 332 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 333 334 @GuardedBy("mUserRestrictionsListeners") 335 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 336 new ArrayList<>(); 337 338 private final LockPatternUtils mLockPatternUtils; 339 340 private final String ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK = 341 "com.android.server.pm.DISABLE_QUIET_MODE_AFTER_UNLOCK"; 342 343 private final BroadcastReceiver mDisableQuietModeCallback = new BroadcastReceiver() { 344 @Override 345 public void onReceive(Context context, Intent intent) { 346 if (ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK.equals(intent.getAction())) { 347 final IntentSender target = intent.getParcelableExtra(Intent.EXTRA_INTENT); 348 final int userHandle = intent.getIntExtra(Intent.EXTRA_USER_ID, 0); 349 setQuietModeEnabled(userHandle, false); 350 if (target != null) { 351 try { 352 mContext.startIntentSender(target, null, 0, 0, 0); 353 } catch (IntentSender.SendIntentException e) { 354 /* ignore */ 355 } 356 } 357 } 358 } 359 }; 360 361 /** 362 * Whether all users should be created ephemeral. 363 */ 364 @GuardedBy("mUsersLock") 365 private boolean mForceEphemeralUsers; 366 367 @GuardedBy("mUserStates") 368 private final SparseIntArray mUserStates = new SparseIntArray(); 369 370 private static UserManagerService sInstance; 371 372 public static UserManagerService getInstance() { 373 synchronized (UserManagerService.class) { 374 return sInstance; 375 } 376 } 377 378 public static class LifeCycle extends SystemService { 379 380 private UserManagerService mUms; 381 382 /** 383 * @param context 384 */ 385 public LifeCycle(Context context) { 386 super(context); 387 } 388 389 @Override 390 public void onStart() { 391 mUms = UserManagerService.getInstance(); 392 publishBinderService(Context.USER_SERVICE, mUms); 393 } 394 395 @Override 396 public void onBootPhase(int phase) { 397 if (phase == SystemService.PHASE_ACTIVITY_MANAGER_READY) { 398 mUms.cleanupPartialUsers(); 399 } 400 } 401 } 402 403 @VisibleForTesting 404 UserManagerService(File dataDir) { 405 this(null, null, new Object(), dataDir); 406 } 407 408 /** 409 * Called by package manager to create the service. This is closely 410 * associated with the package manager, and the given lock is the 411 * package manager's own lock. 412 */ 413 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 414 this(context, pm, packagesLock, Environment.getDataDirectory()); 415 } 416 417 private UserManagerService(Context context, PackageManagerService pm, 418 Object packagesLock, File dataDir) { 419 mContext = context; 420 mPm = pm; 421 mPackagesLock = packagesLock; 422 mHandler = new MainHandler(); 423 synchronized (mPackagesLock) { 424 mUsersDir = new File(dataDir, USER_INFO_DIR); 425 mUsersDir.mkdirs(); 426 // Make zeroth user directory, for services to migrate their files to that location 427 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 428 userZeroDir.mkdirs(); 429 FileUtils.setPermissions(mUsersDir.toString(), 430 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 431 -1, -1); 432 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 433 initDefaultGuestRestrictions(); 434 readUserListLP(); 435 sInstance = this; 436 } 437 mLocalService = new LocalService(); 438 LocalServices.addService(UserManagerInternal.class, mLocalService); 439 mLockPatternUtils = new LockPatternUtils(mContext); 440 mUserStates.put(UserHandle.USER_SYSTEM, UserState.STATE_BOOTING); 441 } 442 443 void systemReady() { 444 mAppOpsService = IAppOpsService.Stub.asInterface( 445 ServiceManager.getService(Context.APP_OPS_SERVICE)); 446 447 synchronized (mRestrictionsLock) { 448 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 449 } 450 451 UserInfo currentGuestUser = findCurrentGuestUser(); 452 if (currentGuestUser != null && !hasUserRestriction( 453 UserManager.DISALLOW_CONFIG_WIFI, currentGuestUser.id)) { 454 // If a guest user currently exists, apply the DISALLOW_CONFIG_WIFI option 455 // to it, in case this guest was created in a previous version where this 456 // user restriction was not a default guest restriction. 457 setUserRestriction(UserManager.DISALLOW_CONFIG_WIFI, true, currentGuestUser.id); 458 } 459 460 mContext.registerReceiver(mDisableQuietModeCallback, 461 new IntentFilter(ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK), 462 null, mHandler); 463 } 464 465 void cleanupPartialUsers() { 466 // Prune out any partially created, partially removed and ephemeral users. 467 ArrayList<UserInfo> partials = new ArrayList<>(); 468 synchronized (mUsersLock) { 469 final int userSize = mUsers.size(); 470 for (int i = 0; i < userSize; i++) { 471 UserInfo ui = mUsers.valueAt(i).info; 472 if ((ui.partial || ui.guestToRemove || ui.isEphemeral()) && i != 0) { 473 partials.add(ui); 474 mRemovingUserIds.append(ui.id, true); 475 ui.partial = true; 476 } 477 } 478 } 479 final int partialsSize = partials.size(); 480 for (int i = 0; i < partialsSize; i++) { 481 UserInfo ui = partials.get(i); 482 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 483 + " (name=" + ui.name + ")"); 484 removeUserState(ui.id); 485 } 486 } 487 488 @Override 489 public String getUserAccount(int userId) { 490 checkManageUserAndAcrossUsersFullPermission("get user account"); 491 synchronized (mUsersLock) { 492 return mUsers.get(userId).account; 493 } 494 } 495 496 @Override 497 public void setUserAccount(int userId, String accountName) { 498 checkManageUserAndAcrossUsersFullPermission("set user account"); 499 UserData userToUpdate = null; 500 synchronized (mPackagesLock) { 501 synchronized (mUsersLock) { 502 final UserData userData = mUsers.get(userId); 503 if (userData == null) { 504 Slog.e(LOG_TAG, "User not found for setting user account: u" + userId); 505 return; 506 } 507 String currentAccount = userData.account; 508 if (!Objects.equal(currentAccount, accountName)) { 509 userData.account = accountName; 510 userToUpdate = userData; 511 } 512 } 513 514 if (userToUpdate != null) { 515 writeUserLP(userToUpdate); 516 } 517 } 518 } 519 520 @Override 521 public UserInfo getPrimaryUser() { 522 checkManageUsersPermission("query users"); 523 synchronized (mUsersLock) { 524 final int userSize = mUsers.size(); 525 for (int i = 0; i < userSize; i++) { 526 UserInfo ui = mUsers.valueAt(i).info; 527 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 528 return ui; 529 } 530 } 531 } 532 return null; 533 } 534 535 @Override 536 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 537 checkManageOrCreateUsersPermission("query users"); 538 synchronized (mUsersLock) { 539 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 540 final int userSize = mUsers.size(); 541 for (int i = 0; i < userSize; i++) { 542 UserInfo ui = mUsers.valueAt(i).info; 543 if (ui.partial) { 544 continue; 545 } 546 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 547 users.add(userWithName(ui)); 548 } 549 } 550 return users; 551 } 552 } 553 554 @Override 555 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 556 boolean returnFullInfo = true; 557 if (userId != UserHandle.getCallingUserId()) { 558 checkManageUsersPermission("getting profiles related to user " + userId); 559 } else { 560 returnFullInfo = hasManageUsersPermission(); 561 } 562 final long ident = Binder.clearCallingIdentity(); 563 try { 564 synchronized (mUsersLock) { 565 return getProfilesLU(userId, enabledOnly, returnFullInfo); 566 } 567 } finally { 568 Binder.restoreCallingIdentity(ident); 569 } 570 } 571 572 @Override 573 public int[] getProfileIds(int userId, boolean enabledOnly) { 574 if (userId != UserHandle.getCallingUserId()) { 575 checkManageUsersPermission("getting profiles related to user " + userId); 576 } 577 final long ident = Binder.clearCallingIdentity(); 578 try { 579 synchronized (mUsersLock) { 580 return getProfileIdsLU(userId, enabledOnly).toArray(); 581 } 582 } finally { 583 Binder.restoreCallingIdentity(ident); 584 } 585 } 586 587 /** Assume permissions already checked and caller's identity cleared */ 588 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly, boolean fullInfo) { 589 IntArray profileIds = getProfileIdsLU(userId, enabledOnly); 590 ArrayList<UserInfo> users = new ArrayList<>(profileIds.size()); 591 for (int i = 0; i < profileIds.size(); i++) { 592 int profileId = profileIds.get(i); 593 UserInfo userInfo = mUsers.get(profileId).info; 594 // If full info is not required - clear PII data to prevent 3P apps from reading it 595 if (!fullInfo) { 596 userInfo = new UserInfo(userInfo); 597 userInfo.name = null; 598 userInfo.iconPath = null; 599 } else { 600 userInfo = userWithName(userInfo); 601 } 602 users.add(userInfo); 603 } 604 return users; 605 } 606 607 /** 608 * Assume permissions already checked and caller's identity cleared 609 */ 610 private IntArray getProfileIdsLU(int userId, boolean enabledOnly) { 611 UserInfo user = getUserInfoLU(userId); 612 IntArray result = new IntArray(mUsers.size()); 613 if (user == null) { 614 // Probably a dying user 615 return result; 616 } 617 final int userSize = mUsers.size(); 618 for (int i = 0; i < userSize; i++) { 619 UserInfo profile = mUsers.valueAt(i).info; 620 if (!isProfileOf(user, profile)) { 621 continue; 622 } 623 if (enabledOnly && !profile.isEnabled()) { 624 continue; 625 } 626 if (mRemovingUserIds.get(profile.id)) { 627 continue; 628 } 629 if (profile.partial) { 630 continue; 631 } 632 result.add(profile.id); 633 } 634 return result; 635 } 636 637 @Override 638 public int getCredentialOwnerProfile(int userHandle) { 639 checkManageUsersPermission("get the credential owner"); 640 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 641 synchronized (mUsersLock) { 642 UserInfo profileParent = getProfileParentLU(userHandle); 643 if (profileParent != null) { 644 return profileParent.id; 645 } 646 } 647 } 648 649 return userHandle; 650 } 651 652 @Override 653 public boolean isSameProfileGroup(int userId, int otherUserId) { 654 if (userId == otherUserId) return true; 655 checkManageUsersPermission("check if in the same profile group"); 656 synchronized (mPackagesLock) { 657 return isSameProfileGroupLP(userId, otherUserId); 658 } 659 } 660 661 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 662 synchronized (mUsersLock) { 663 UserInfo userInfo = getUserInfoLU(userId); 664 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 665 return false; 666 } 667 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 668 if (otherUserInfo == null 669 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 670 return false; 671 } 672 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 673 } 674 } 675 676 @Override 677 public UserInfo getProfileParent(int userHandle) { 678 checkManageUsersPermission("get the profile parent"); 679 synchronized (mUsersLock) { 680 return getProfileParentLU(userHandle); 681 } 682 } 683 684 private UserInfo getProfileParentLU(int userHandle) { 685 UserInfo profile = getUserInfoLU(userHandle); 686 if (profile == null) { 687 return null; 688 } 689 int parentUserId = profile.profileGroupId; 690 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 691 return null; 692 } else { 693 return getUserInfoLU(parentUserId); 694 } 695 } 696 697 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 698 return user.id == profile.id || 699 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 700 && user.profileGroupId == profile.profileGroupId); 701 } 702 703 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 704 UserHandle parentHandle, boolean inQuietMode) { 705 Intent intent = new Intent(); 706 if (inQuietMode) { 707 intent.setAction(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE); 708 } else { 709 intent.setAction(Intent.ACTION_MANAGED_PROFILE_AVAILABLE); 710 } 711 intent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 712 intent.putExtra(Intent.EXTRA_USER, profileHandle); 713 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 714 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 715 mContext.sendBroadcastAsUser(intent, parentHandle); 716 } 717 718 @Override 719 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 720 checkManageUsersPermission("silence profile"); 721 boolean changed = false; 722 UserInfo profile, parent; 723 synchronized (mPackagesLock) { 724 synchronized (mUsersLock) { 725 profile = getUserInfoLU(userHandle); 726 parent = getProfileParentLU(userHandle); 727 728 } 729 if (profile == null || !profile.isManagedProfile()) { 730 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 731 } 732 if (profile.isQuietModeEnabled() != enableQuietMode) { 733 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 734 writeUserLP(getUserDataLU(profile.id)); 735 changed = true; 736 } 737 } 738 if (changed) { 739 long identity = Binder.clearCallingIdentity(); 740 try { 741 if (enableQuietMode) { 742 ActivityManagerNative.getDefault().stopUser(userHandle, /* force */true, null); 743 LocalServices.getService(ActivityManagerInternal.class) 744 .killForegroundAppsForUser(userHandle); 745 } else { 746 ActivityManagerNative.getDefault().startUserInBackground(userHandle); 747 } 748 } catch (RemoteException e) { 749 Slog.e(LOG_TAG, "fail to start/stop user for quiet mode", e); 750 } finally { 751 Binder.restoreCallingIdentity(identity); 752 } 753 754 broadcastProfileAvailabilityChanges(profile.getUserHandle(), parent.getUserHandle(), 755 enableQuietMode); 756 } 757 } 758 759 @Override 760 public boolean isQuietModeEnabled(int userHandle) { 761 synchronized (mPackagesLock) { 762 UserInfo info; 763 synchronized (mUsersLock) { 764 info = getUserInfoLU(userHandle); 765 } 766 if (info == null || !info.isManagedProfile()) { 767 return false; 768 } 769 return info.isQuietModeEnabled(); 770 } 771 } 772 773 @Override 774 public boolean trySetQuietModeDisabled(int userHandle, IntentSender target) { 775 checkManageUsersPermission("silence profile"); 776 if (StorageManager.isUserKeyUnlocked(userHandle) 777 || !mLockPatternUtils.isSecure(userHandle)) { 778 // if the user is already unlocked, no need to show a profile challenge 779 setQuietModeEnabled(userHandle, false); 780 return true; 781 } 782 783 long identity = Binder.clearCallingIdentity(); 784 try { 785 // otherwise, we show a profile challenge to trigger decryption of the user 786 final KeyguardManager km = (KeyguardManager) mContext.getSystemService( 787 Context.KEYGUARD_SERVICE); 788 // We should use userHandle not credentialOwnerUserId here, as even if it is unified 789 // lock, confirm screenlock page will know and show personal challenge, and unlock 790 // work profile when personal challenge is correct 791 final Intent unlockIntent = km.createConfirmDeviceCredentialIntent(null, null, 792 userHandle); 793 if (unlockIntent == null) { 794 return false; 795 } 796 final Intent callBackIntent = new Intent( 797 ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK); 798 if (target != null) { 799 callBackIntent.putExtra(Intent.EXTRA_INTENT, target); 800 } 801 callBackIntent.putExtra(Intent.EXTRA_USER_ID, userHandle); 802 callBackIntent.setPackage(mContext.getPackageName()); 803 callBackIntent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); 804 final PendingIntent pendingIntent = PendingIntent.getBroadcast( 805 mContext, 806 0, 807 callBackIntent, 808 PendingIntent.FLAG_CANCEL_CURRENT | 809 PendingIntent.FLAG_ONE_SHOT | 810 PendingIntent.FLAG_IMMUTABLE); 811 // After unlocking the challenge, it will disable quiet mode and run the original 812 // intentSender 813 unlockIntent.putExtra(Intent.EXTRA_INTENT, pendingIntent.getIntentSender()); 814 unlockIntent.setFlags(FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS); 815 mContext.startActivity(unlockIntent); 816 } finally { 817 Binder.restoreCallingIdentity(identity); 818 } 819 return false; 820 } 821 822 @Override 823 public void setUserEnabled(int userId) { 824 checkManageUsersPermission("enable user"); 825 synchronized (mPackagesLock) { 826 UserInfo info; 827 synchronized (mUsersLock) { 828 info = getUserInfoLU(userId); 829 } 830 if (info != null && !info.isEnabled()) { 831 info.flags ^= UserInfo.FLAG_DISABLED; 832 writeUserLP(getUserDataLU(info.id)); 833 } 834 } 835 } 836 837 @Override 838 public UserInfo getUserInfo(int userId) { 839 checkManageOrCreateUsersPermission("query user"); 840 synchronized (mUsersLock) { 841 return userWithName(getUserInfoLU(userId)); 842 } 843 } 844 845 /** 846 * Returns a UserInfo object with the name filled in, for Owner, or the original 847 * if the name is already set. 848 */ 849 private UserInfo userWithName(UserInfo orig) { 850 if (orig != null && orig.name == null && orig.id == UserHandle.USER_SYSTEM) { 851 UserInfo withName = new UserInfo(orig); 852 withName.name = getOwnerName(); 853 return withName; 854 } else { 855 return orig; 856 } 857 } 858 859 @Override 860 public boolean isManagedProfile(int userId) { 861 int callingUserId = UserHandle.getCallingUserId(); 862 if (callingUserId != userId && !hasManageUsersPermission()) { 863 synchronized (mPackagesLock) { 864 if (!isSameProfileGroupLP(callingUserId, userId)) { 865 throw new SecurityException( 866 "You need MANAGE_USERS permission to: check if specified user a " + 867 "managed profile outside your profile group"); 868 } 869 } 870 } 871 synchronized (mUsersLock) { 872 UserInfo userInfo = getUserInfoLU(userId); 873 return userInfo != null && userInfo.isManagedProfile(); 874 } 875 } 876 877 @Override 878 public boolean isDemoUser(int userId) { 879 int callingUserId = UserHandle.getCallingUserId(); 880 if (callingUserId != userId && !hasManageUsersPermission()) { 881 throw new SecurityException("You need MANAGE_USERS permission to query if u=" + userId 882 + " is a demo user"); 883 } 884 synchronized (mUsersLock) { 885 UserInfo userInfo = getUserInfoLU(userId); 886 return userInfo != null && userInfo.isDemo(); 887 } 888 } 889 890 @Override 891 public boolean isRestricted() { 892 synchronized (mUsersLock) { 893 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 894 } 895 } 896 897 @Override 898 public boolean canHaveRestrictedProfile(int userId) { 899 checkManageUsersPermission("canHaveRestrictedProfile"); 900 synchronized (mUsersLock) { 901 final UserInfo userInfo = getUserInfoLU(userId); 902 if (userInfo == null || !userInfo.canHaveProfile()) { 903 return false; 904 } 905 if (!userInfo.isAdmin()) { 906 return false; 907 } 908 // restricted profile can be created if there is no DO set and the admin user has no PO; 909 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 910 } 911 } 912 913 /* 914 * Should be locked on mUsers before calling this. 915 */ 916 private UserInfo getUserInfoLU(int userId) { 917 final UserData userData = mUsers.get(userId); 918 // If it is partial and not in the process of being removed, return as unknown user. 919 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 920 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 921 return null; 922 } 923 return userData != null ? userData.info : null; 924 } 925 926 private UserData getUserDataLU(int userId) { 927 final UserData userData = mUsers.get(userId); 928 // If it is partial and not in the process of being removed, return as unknown user. 929 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 930 return null; 931 } 932 return userData; 933 } 934 935 /** 936 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 937 * <p>No permissions checking or any addition checks are made</p> 938 */ 939 private UserInfo getUserInfoNoChecks(int userId) { 940 synchronized (mUsersLock) { 941 final UserData userData = mUsers.get(userId); 942 return userData != null ? userData.info : null; 943 } 944 } 945 946 /** 947 * Obtains {@link #mUsersLock} and return UserData from mUsers. 948 * <p>No permissions checking or any addition checks are made</p> 949 */ 950 private UserData getUserDataNoChecks(int userId) { 951 synchronized (mUsersLock) { 952 return mUsers.get(userId); 953 } 954 } 955 956 /** Called by PackageManagerService */ 957 public boolean exists(int userId) { 958 return getUserInfoNoChecks(userId) != null; 959 } 960 961 @Override 962 public void setUserName(int userId, String name) { 963 checkManageUsersPermission("rename users"); 964 boolean changed = false; 965 synchronized (mPackagesLock) { 966 UserData userData = getUserDataNoChecks(userId); 967 if (userData == null || userData.info.partial) { 968 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 969 return; 970 } 971 if (name != null && !name.equals(userData.info.name)) { 972 userData.info.name = name; 973 writeUserLP(userData); 974 changed = true; 975 } 976 } 977 if (changed) { 978 sendUserInfoChangedBroadcast(userId); 979 } 980 } 981 982 @Override 983 public void setUserIcon(int userId, Bitmap bitmap) { 984 checkManageUsersPermission("update users"); 985 if (hasUserRestriction(UserManager.DISALLOW_SET_USER_ICON, userId)) { 986 Log.w(LOG_TAG, "Cannot set user icon. DISALLOW_SET_USER_ICON is enabled."); 987 return; 988 } 989 mLocalService.setUserIcon(userId, bitmap); 990 } 991 992 993 994 private void sendUserInfoChangedBroadcast(int userId) { 995 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 996 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 997 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 998 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 999 } 1000 1001 @Override 1002 public ParcelFileDescriptor getUserIcon(int targetUserId) { 1003 String iconPath; 1004 synchronized (mPackagesLock) { 1005 UserInfo targetUserInfo = getUserInfoNoChecks(targetUserId); 1006 if (targetUserInfo == null || targetUserInfo.partial) { 1007 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + targetUserId); 1008 return null; 1009 } 1010 1011 final int callingUserId = UserHandle.getCallingUserId(); 1012 final int callingGroupId = getUserInfoNoChecks(callingUserId).profileGroupId; 1013 final int targetGroupId = targetUserInfo.profileGroupId; 1014 final boolean sameGroup = (callingGroupId != UserInfo.NO_PROFILE_GROUP_ID 1015 && callingGroupId == targetGroupId); 1016 if ((callingUserId != targetUserId) && !sameGroup) { 1017 checkManageUsersPermission("get the icon of a user who is not related"); 1018 } 1019 1020 if (targetUserInfo.iconPath == null) { 1021 return null; 1022 } 1023 iconPath = targetUserInfo.iconPath; 1024 } 1025 1026 try { 1027 return ParcelFileDescriptor.open( 1028 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 1029 } catch (FileNotFoundException e) { 1030 Log.e(LOG_TAG, "Couldn't find icon file", e); 1031 } 1032 return null; 1033 } 1034 1035 public void makeInitialized(int userId) { 1036 checkManageUsersPermission("makeInitialized"); 1037 boolean scheduleWriteUser = false; 1038 UserData userData; 1039 synchronized (mUsersLock) { 1040 userData = mUsers.get(userId); 1041 if (userData == null || userData.info.partial) { 1042 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 1043 return; 1044 } 1045 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1046 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1047 scheduleWriteUser = true; 1048 } 1049 } 1050 if (scheduleWriteUser) { 1051 scheduleWriteUser(userData); 1052 } 1053 } 1054 1055 /** 1056 * If default guest restrictions haven't been initialized yet, add the basic 1057 * restrictions. 1058 */ 1059 private void initDefaultGuestRestrictions() { 1060 synchronized (mGuestRestrictions) { 1061 if (mGuestRestrictions.isEmpty()) { 1062 mGuestRestrictions.putBoolean(UserManager.DISALLOW_CONFIG_WIFI, true); 1063 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 1064 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 1065 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 1066 } 1067 } 1068 } 1069 1070 @Override 1071 public Bundle getDefaultGuestRestrictions() { 1072 checkManageUsersPermission("getDefaultGuestRestrictions"); 1073 synchronized (mGuestRestrictions) { 1074 return new Bundle(mGuestRestrictions); 1075 } 1076 } 1077 1078 @Override 1079 public void setDefaultGuestRestrictions(Bundle restrictions) { 1080 checkManageUsersPermission("setDefaultGuestRestrictions"); 1081 synchronized (mGuestRestrictions) { 1082 mGuestRestrictions.clear(); 1083 mGuestRestrictions.putAll(restrictions); 1084 } 1085 synchronized (mPackagesLock) { 1086 writeUserListLP(); 1087 } 1088 } 1089 1090 /** 1091 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 1092 */ 1093 void setDevicePolicyUserRestrictionsInner(int userId, @NonNull Bundle local, 1094 @Nullable Bundle global) { 1095 Preconditions.checkNotNull(local); 1096 boolean globalChanged = false; 1097 boolean localChanged; 1098 synchronized (mRestrictionsLock) { 1099 if (global != null) { 1100 // Update global. 1101 globalChanged = !UserRestrictionsUtils.areEqual( 1102 mDevicePolicyGlobalUserRestrictions, global); 1103 if (globalChanged) { 1104 mDevicePolicyGlobalUserRestrictions = global; 1105 } 1106 // Remember the global restriction owner userId to be able to make a distinction 1107 // in getUserRestrictionSource on who set local policies. 1108 mGlobalRestrictionOwnerUserId = userId; 1109 } else { 1110 if (mGlobalRestrictionOwnerUserId == userId) { 1111 // When profile owner sets restrictions it passes null global bundle and we 1112 // reset global restriction owner userId. 1113 // This means this user used to have DO, but now the DO is gone and the user 1114 // instead has PO. 1115 mGlobalRestrictionOwnerUserId = UserHandle.USER_NULL; 1116 } 1117 } 1118 { 1119 // Update local. 1120 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 1121 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 1122 if (localChanged) { 1123 mDevicePolicyLocalUserRestrictions.put(userId, local); 1124 } 1125 } 1126 } 1127 if (DBG) { 1128 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 1129 + " global=" + global + (globalChanged ? " (changed)" : "") 1130 + " local=" + local + (localChanged ? " (changed)" : "") 1131 ); 1132 } 1133 // Don't call them within the mRestrictionsLock. 1134 synchronized (mPackagesLock) { 1135 if (localChanged) { 1136 writeUserLP(getUserDataNoChecks(userId)); 1137 } 1138 if (globalChanged) { 1139 writeUserListLP(); 1140 } 1141 } 1142 1143 synchronized (mRestrictionsLock) { 1144 if (globalChanged) { 1145 applyUserRestrictionsForAllUsersLR(); 1146 } else if (localChanged) { 1147 applyUserRestrictionsLR(userId); 1148 } 1149 } 1150 } 1151 1152 @GuardedBy("mRestrictionsLock") 1153 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 1154 final Bundle baseRestrictions = 1155 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 1156 final Bundle global = mDevicePolicyGlobalUserRestrictions; 1157 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 1158 1159 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 1160 // Common case first. 1161 return baseRestrictions; 1162 } 1163 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 1164 UserRestrictionsUtils.merge(effective, global); 1165 UserRestrictionsUtils.merge(effective, local); 1166 1167 return effective; 1168 } 1169 1170 @GuardedBy("mRestrictionsLock") 1171 private void invalidateEffectiveUserRestrictionsLR(int userId) { 1172 if (DBG) { 1173 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 1174 } 1175 mCachedEffectiveUserRestrictions.remove(userId); 1176 } 1177 1178 private Bundle getEffectiveUserRestrictions(int userId) { 1179 synchronized (mRestrictionsLock) { 1180 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 1181 if (restrictions == null) { 1182 restrictions = computeEffectiveUserRestrictionsLR(userId); 1183 mCachedEffectiveUserRestrictions.put(userId, restrictions); 1184 } 1185 return restrictions; 1186 } 1187 } 1188 1189 /** @return a specific user restriction that's in effect currently. */ 1190 @Override 1191 public boolean hasUserRestriction(String restrictionKey, int userId) { 1192 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1193 return false; 1194 } 1195 Bundle restrictions = getEffectiveUserRestrictions(userId); 1196 return restrictions != null && restrictions.getBoolean(restrictionKey); 1197 } 1198 1199 /** 1200 * @hide 1201 * 1202 * Returns who set a user restriction on a user. 1203 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 1204 * @param restrictionKey the string key representing the restriction 1205 * @param userId the id of the user for whom to retrieve the restrictions. 1206 * @return The source of user restriction. Any combination of 1207 * {@link UserManager#RESTRICTION_NOT_SET}, 1208 * {@link UserManager#RESTRICTION_SOURCE_SYSTEM}, 1209 * {@link UserManager#RESTRICTION_SOURCE_DEVICE_OWNER} 1210 * and {@link UserManager#RESTRICTION_SOURCE_PROFILE_OWNER} 1211 */ 1212 @Override 1213 public int getUserRestrictionSource(String restrictionKey, int userId) { 1214 checkManageUsersPermission("getUserRestrictionSource"); 1215 int result = UserManager.RESTRICTION_NOT_SET; 1216 1217 // Shortcut for the most common case 1218 if (!hasUserRestriction(restrictionKey, userId)) { 1219 return result; 1220 } 1221 1222 if (hasBaseUserRestriction(restrictionKey, userId)) { 1223 result |= UserManager.RESTRICTION_SOURCE_SYSTEM; 1224 } 1225 1226 synchronized(mRestrictionsLock) { 1227 Bundle localRestrictions = mDevicePolicyLocalUserRestrictions.get(userId); 1228 if (!UserRestrictionsUtils.isEmpty(localRestrictions) 1229 && localRestrictions.getBoolean(restrictionKey)) { 1230 // Local restrictions may have been set by device owner the userId of which is 1231 // stored in mGlobalRestrictionOwnerUserId. 1232 if (mGlobalRestrictionOwnerUserId == userId) { 1233 result |= UserManager.RESTRICTION_SOURCE_DEVICE_OWNER; 1234 } else { 1235 result |= UserManager.RESTRICTION_SOURCE_PROFILE_OWNER; 1236 } 1237 } 1238 if (!UserRestrictionsUtils.isEmpty(mDevicePolicyGlobalUserRestrictions) 1239 && mDevicePolicyGlobalUserRestrictions.getBoolean(restrictionKey)) { 1240 result |= UserManager.RESTRICTION_SOURCE_DEVICE_OWNER; 1241 } 1242 } 1243 1244 return result; 1245 } 1246 1247 /** 1248 * @return UserRestrictions that are in effect currently. This always returns a new 1249 * {@link Bundle}. 1250 */ 1251 @Override 1252 public Bundle getUserRestrictions(int userId) { 1253 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 1254 } 1255 1256 @Override 1257 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 1258 checkManageUsersPermission("hasBaseUserRestriction"); 1259 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1260 return false; 1261 } 1262 synchronized (mRestrictionsLock) { 1263 Bundle bundle = mBaseUserRestrictions.get(userId); 1264 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 1265 } 1266 } 1267 1268 @Override 1269 public void setUserRestriction(String key, boolean value, int userId) { 1270 checkManageUsersPermission("setUserRestriction"); 1271 if (!UserRestrictionsUtils.isValidRestriction(key)) { 1272 return; 1273 } 1274 synchronized (mRestrictionsLock) { 1275 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 1276 // a copy. 1277 final Bundle newRestrictions = UserRestrictionsUtils.clone( 1278 mBaseUserRestrictions.get(userId)); 1279 newRestrictions.putBoolean(key, value); 1280 1281 updateUserRestrictionsInternalLR(newRestrictions, userId); 1282 } 1283 } 1284 1285 /** 1286 * Optionally updating user restrictions, calculate the effective user restrictions and also 1287 * propagate to other services and system settings. 1288 * 1289 * @param newRestrictions User restrictions to set. 1290 * If null, will not update user restrictions and only does the propagation. 1291 * @param userId target user ID. 1292 */ 1293 @GuardedBy("mRestrictionsLock") 1294 private void updateUserRestrictionsInternalLR( 1295 @Nullable Bundle newRestrictions, int userId) { 1296 1297 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 1298 mAppliedUserRestrictions.get(userId)); 1299 1300 // Update base restrictions. 1301 if (newRestrictions != null) { 1302 // If newRestrictions == the current one, it's probably a bug. 1303 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 1304 1305 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 1306 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 1307 != newRestrictions); 1308 1309 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 1310 mBaseUserRestrictions.put(userId, newRestrictions); 1311 scheduleWriteUser(getUserDataNoChecks(userId)); 1312 } 1313 } 1314 1315 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 1316 1317 mCachedEffectiveUserRestrictions.put(userId, effective); 1318 1319 // Apply the new restrictions. 1320 if (DBG) { 1321 debug("Applying user restrictions: userId=" + userId 1322 + " new=" + effective + " prev=" + prevAppliedRestrictions); 1323 } 1324 1325 if (mAppOpsService != null) { // We skip it until system-ready. 1326 mHandler.post(new Runnable() { 1327 @Override 1328 public void run() { 1329 try { 1330 mAppOpsService.setUserRestrictions(effective, mUserRestriconToken, userId); 1331 } catch (RemoteException e) { 1332 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1333 } 1334 } 1335 }); 1336 } 1337 1338 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1339 1340 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1341 } 1342 1343 private void propagateUserRestrictionsLR(final int userId, 1344 Bundle newRestrictions, Bundle prevRestrictions) { 1345 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1346 // actually, but we still need some kind of synchronization otherwise we might end up 1347 // calling listeners out-of-order, thus "LR". 1348 1349 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1350 return; 1351 } 1352 1353 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1354 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1355 1356 mHandler.post(new Runnable() { 1357 @Override 1358 public void run() { 1359 UserRestrictionsUtils.applyUserRestrictions( 1360 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1361 1362 final UserRestrictionsListener[] listeners; 1363 synchronized (mUserRestrictionsListeners) { 1364 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1365 mUserRestrictionsListeners.toArray(listeners); 1366 } 1367 for (int i = 0; i < listeners.length; i++) { 1368 listeners[i].onUserRestrictionsChanged(userId, 1369 newRestrictionsFinal, prevRestrictionsFinal); 1370 } 1371 } 1372 }); 1373 } 1374 1375 // Package private for the inner class. 1376 void applyUserRestrictionsLR(int userId) { 1377 updateUserRestrictionsInternalLR(null, userId); 1378 } 1379 1380 @GuardedBy("mRestrictionsLock") 1381 // Package private for the inner class. 1382 void applyUserRestrictionsForAllUsersLR() { 1383 if (DBG) { 1384 debug("applyUserRestrictionsForAllUsersLR"); 1385 } 1386 // First, invalidate all cached values. 1387 mCachedEffectiveUserRestrictions.clear(); 1388 1389 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 1390 // it on a handler. 1391 final Runnable r = new Runnable() { 1392 @Override 1393 public void run() { 1394 // Then get the list of running users. 1395 final int[] runningUsers; 1396 try { 1397 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 1398 } catch (RemoteException e) { 1399 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 1400 return; 1401 } 1402 // Then re-calculate the effective restrictions and apply, only for running users. 1403 // It's okay if a new user has started after the getRunningUserIds() call, 1404 // because we'll do the same thing (re-calculate the restrictions and apply) 1405 // when we start a user. 1406 synchronized (mRestrictionsLock) { 1407 for (int i = 0; i < runningUsers.length; i++) { 1408 applyUserRestrictionsLR(runningUsers[i]); 1409 } 1410 } 1411 } 1412 }; 1413 mHandler.post(r); 1414 } 1415 1416 /** 1417 * Check if we've hit the limit of how many users can be created. 1418 */ 1419 private boolean isUserLimitReached() { 1420 int count; 1421 synchronized (mUsersLock) { 1422 count = getAliveUsersExcludingGuestsCountLU(); 1423 } 1424 return count >= UserManager.getMaxSupportedUsers(); 1425 } 1426 1427 @Override 1428 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1429 checkManageUsersPermission("check if more managed profiles can be added."); 1430 if (ActivityManager.isLowRamDeviceStatic()) { 1431 return false; 1432 } 1433 if (!mContext.getPackageManager().hasSystemFeature( 1434 PackageManager.FEATURE_MANAGED_USERS)) { 1435 return false; 1436 } 1437 // Limit number of managed profiles that can be created 1438 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1439 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1440 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1441 return false; 1442 } 1443 synchronized(mUsersLock) { 1444 UserInfo userInfo = getUserInfoLU(userId); 1445 if (!userInfo.canHaveProfile()) { 1446 return false; 1447 } 1448 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1449 - profilesRemovedCount; 1450 // We allow creating a managed profile in the special case where there is only one user. 1451 return usersCountAfterRemoving == 1 1452 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1453 } 1454 } 1455 1456 private int getAliveUsersExcludingGuestsCountLU() { 1457 int aliveUserCount = 0; 1458 final int totalUserCount = mUsers.size(); 1459 // Skip over users being removed 1460 for (int i = 0; i < totalUserCount; i++) { 1461 UserInfo user = mUsers.valueAt(i).info; 1462 if (!mRemovingUserIds.get(user.id) 1463 && !user.isGuest() && !user.partial) { 1464 aliveUserCount++; 1465 } 1466 } 1467 return aliveUserCount; 1468 } 1469 1470 /** 1471 * Enforces that only the system UID or root's UID or apps that have the 1472 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1473 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1474 * permissions can make certain calls to the UserManager. 1475 * 1476 * @param message used as message if SecurityException is thrown 1477 * @throws SecurityException if the caller does not have enough privilege. 1478 */ 1479 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1480 final int uid = Binder.getCallingUid(); 1481 if (uid != Process.SYSTEM_UID && uid != 0 1482 && ActivityManager.checkComponentPermission( 1483 Manifest.permission.MANAGE_USERS, 1484 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1485 && ActivityManager.checkComponentPermission( 1486 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1487 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1488 throw new SecurityException( 1489 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1490 + message); 1491 } 1492 } 1493 1494 /** 1495 * Enforces that only the system UID or root's UID or apps that have the 1496 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1497 * permission can make certain calls to the UserManager. 1498 * 1499 * @param message used as message if SecurityException is thrown 1500 * @throws SecurityException if the caller is not system or root 1501 * @see #hasManageUsersPermission() 1502 */ 1503 private static final void checkManageUsersPermission(String message) { 1504 if (!hasManageUsersPermission()) { 1505 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1506 } 1507 } 1508 1509 /** 1510 * Enforces that only the system UID or root's UID or apps that have the 1511 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} or 1512 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS} 1513 * can make certain calls to the UserManager. 1514 * 1515 * @param message used as message if SecurityException is thrown 1516 * @throws SecurityException if the caller is not system or root 1517 * @see #hasManageOrCreateUsersPermission() 1518 */ 1519 private static final void checkManageOrCreateUsersPermission(String message) { 1520 if (!hasManageOrCreateUsersPermission()) { 1521 throw new SecurityException( 1522 "You either need MANAGE_USERS or CREATE_USERS permission to: " + message); 1523 } 1524 } 1525 1526 /** 1527 * Similar to {@link #checkManageOrCreateUsersPermission(String)} but when the caller is tries 1528 * to create user/profiles other than what is allowed for 1529 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS} permission, then it will only 1530 * allow callers with {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} permission. 1531 */ 1532 private static final void checkManageOrCreateUsersPermission(int creationFlags) { 1533 if ((creationFlags & ~ALLOWED_FLAGS_FOR_CREATE_USERS_PERMISSION) == 0) { 1534 if (!hasManageOrCreateUsersPermission()) { 1535 throw new SecurityException("You either need MANAGE_USERS or CREATE_USERS " 1536 + "permission to create an user with flags: " + creationFlags); 1537 } 1538 } else if (!hasManageUsersPermission()) { 1539 throw new SecurityException("You need MANAGE_USERS permission to create an user " 1540 + " with flags: " + creationFlags); 1541 } 1542 } 1543 1544 /** 1545 * @return whether the calling UID is system UID or root's UID or the calling app has the 1546 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS}. 1547 */ 1548 private static final boolean hasManageUsersPermission() { 1549 final int callingUid = Binder.getCallingUid(); 1550 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1551 || callingUid == Process.ROOT_UID 1552 || ActivityManager.checkComponentPermission( 1553 android.Manifest.permission.MANAGE_USERS, 1554 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1555 } 1556 1557 /** 1558 * @return whether the calling UID is system UID or root's UID or the calling app has the 1559 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} or 1560 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS}. 1561 */ 1562 private static final boolean hasManageOrCreateUsersPermission() { 1563 final int callingUid = Binder.getCallingUid(); 1564 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1565 || callingUid == Process.ROOT_UID 1566 || ActivityManager.checkComponentPermission( 1567 android.Manifest.permission.MANAGE_USERS, 1568 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED 1569 || ActivityManager.checkComponentPermission( 1570 android.Manifest.permission.CREATE_USERS, 1571 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1572 } 1573 1574 /** 1575 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1576 * UserManager. 1577 * 1578 * @param message used as message if SecurityException is thrown 1579 * @throws SecurityException if the caller is not system or root 1580 */ 1581 private static void checkSystemOrRoot(String message) { 1582 final int uid = Binder.getCallingUid(); 1583 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1584 throw new SecurityException("Only system may: " + message); 1585 } 1586 } 1587 1588 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1589 try { 1590 File dir = new File(mUsersDir, Integer.toString(info.id)); 1591 File file = new File(dir, USER_PHOTO_FILENAME); 1592 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1593 if (!dir.exists()) { 1594 dir.mkdir(); 1595 FileUtils.setPermissions( 1596 dir.getPath(), 1597 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1598 -1, -1); 1599 } 1600 FileOutputStream os; 1601 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1602 && tmp.renameTo(file) && SELinux.restorecon(file)) { 1603 info.iconPath = file.getAbsolutePath(); 1604 } 1605 try { 1606 os.close(); 1607 } catch (IOException ioe) { 1608 // What the ... ! 1609 } 1610 tmp.delete(); 1611 } catch (FileNotFoundException e) { 1612 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1613 } 1614 } 1615 1616 /** 1617 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1618 * cache it elsewhere. 1619 * @return the array of user ids. 1620 */ 1621 public int[] getUserIds() { 1622 synchronized (mUsersLock) { 1623 return mUserIds; 1624 } 1625 } 1626 1627 private void readUserListLP() { 1628 if (!mUserListFile.exists()) { 1629 fallbackToSingleUserLP(); 1630 return; 1631 } 1632 FileInputStream fis = null; 1633 AtomicFile userListFile = new AtomicFile(mUserListFile); 1634 try { 1635 fis = userListFile.openRead(); 1636 XmlPullParser parser = Xml.newPullParser(); 1637 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1638 int type; 1639 while ((type = parser.next()) != XmlPullParser.START_TAG 1640 && type != XmlPullParser.END_DOCUMENT) { 1641 // Skip 1642 } 1643 1644 if (type != XmlPullParser.START_TAG) { 1645 Slog.e(LOG_TAG, "Unable to read user list"); 1646 fallbackToSingleUserLP(); 1647 return; 1648 } 1649 1650 mNextSerialNumber = -1; 1651 if (parser.getName().equals(TAG_USERS)) { 1652 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1653 if (lastSerialNumber != null) { 1654 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1655 } 1656 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1657 if (versionNumber != null) { 1658 mUserVersion = Integer.parseInt(versionNumber); 1659 } 1660 } 1661 1662 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1663 1664 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1665 if (type == XmlPullParser.START_TAG) { 1666 final String name = parser.getName(); 1667 if (name.equals(TAG_USER)) { 1668 String id = parser.getAttributeValue(null, ATTR_ID); 1669 1670 UserData userData = readUserLP(Integer.parseInt(id)); 1671 1672 if (userData != null) { 1673 synchronized (mUsersLock) { 1674 mUsers.put(userData.info.id, userData); 1675 if (mNextSerialNumber < 0 1676 || mNextSerialNumber <= userData.info.id) { 1677 mNextSerialNumber = userData.info.id + 1; 1678 } 1679 } 1680 } 1681 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1682 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1683 && type != XmlPullParser.END_TAG) { 1684 if (type == XmlPullParser.START_TAG) { 1685 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1686 synchronized (mGuestRestrictions) { 1687 UserRestrictionsUtils 1688 .readRestrictions(parser, mGuestRestrictions); 1689 } 1690 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1691 ) { 1692 UserRestrictionsUtils.readRestrictions(parser, 1693 newDevicePolicyGlobalUserRestrictions); 1694 } 1695 break; 1696 } 1697 } 1698 } else if (name.equals(TAG_GLOBAL_RESTRICTION_OWNER_ID)) { 1699 String ownerUserId = parser.getAttributeValue(null, ATTR_ID); 1700 if (ownerUserId != null) { 1701 mGlobalRestrictionOwnerUserId = Integer.parseInt(ownerUserId); 1702 } 1703 } 1704 } 1705 } 1706 synchronized (mRestrictionsLock) { 1707 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1708 } 1709 updateUserIds(); 1710 upgradeIfNecessaryLP(); 1711 } catch (IOException | XmlPullParserException e) { 1712 fallbackToSingleUserLP(); 1713 } finally { 1714 IoUtils.closeQuietly(fis); 1715 } 1716 } 1717 1718 /** 1719 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1720 */ 1721 private void upgradeIfNecessaryLP() { 1722 final int originalVersion = mUserVersion; 1723 int userVersion = mUserVersion; 1724 if (userVersion < 1) { 1725 // Assign a proper name for the owner, if not initialized correctly before 1726 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1727 if ("Primary".equals(userData.info.name)) { 1728 userData.info.name = 1729 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1730 scheduleWriteUser(userData); 1731 } 1732 userVersion = 1; 1733 } 1734 1735 if (userVersion < 2) { 1736 // Owner should be marked as initialized 1737 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1738 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1739 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1740 scheduleWriteUser(userData); 1741 } 1742 userVersion = 2; 1743 } 1744 1745 1746 if (userVersion < 4) { 1747 userVersion = 4; 1748 } 1749 1750 if (userVersion < 5) { 1751 initDefaultGuestRestrictions(); 1752 userVersion = 5; 1753 } 1754 1755 if (userVersion < 6) { 1756 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1757 synchronized (mUsersLock) { 1758 for (int i = 0; i < mUsers.size(); i++) { 1759 UserData userData = mUsers.valueAt(i); 1760 // In non-split mode, only user 0 can have restricted profiles 1761 if (!splitSystemUser && userData.info.isRestricted() 1762 && (userData.info.restrictedProfileParentId 1763 == UserInfo.NO_PROFILE_GROUP_ID)) { 1764 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1765 scheduleWriteUser(userData); 1766 } 1767 } 1768 } 1769 userVersion = 6; 1770 } 1771 1772 if (userVersion < USER_VERSION) { 1773 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1774 + USER_VERSION); 1775 } else { 1776 mUserVersion = userVersion; 1777 1778 if (originalVersion < mUserVersion) { 1779 writeUserListLP(); 1780 } 1781 } 1782 } 1783 1784 private void fallbackToSingleUserLP() { 1785 int flags = UserInfo.FLAG_INITIALIZED; 1786 // In split system user mode, the admin and primary flags are assigned to the first human 1787 // user. 1788 if (!UserManager.isSplitSystemUser()) { 1789 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1790 } 1791 // Create the system user 1792 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, null, null, flags); 1793 UserData userData = new UserData(); 1794 userData.info = system; 1795 synchronized (mUsersLock) { 1796 mUsers.put(system.id, userData); 1797 } 1798 mNextSerialNumber = MIN_USER_ID; 1799 mUserVersion = USER_VERSION; 1800 1801 Bundle restrictions = new Bundle(); 1802 synchronized (mRestrictionsLock) { 1803 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1804 } 1805 1806 updateUserIds(); 1807 initDefaultGuestRestrictions(); 1808 1809 writeUserLP(userData); 1810 writeUserListLP(); 1811 } 1812 1813 private String getOwnerName() { 1814 return mContext.getResources().getString(com.android.internal.R.string.owner_name); 1815 } 1816 1817 private void scheduleWriteUser(UserData UserData) { 1818 if (DBG) { 1819 debug("scheduleWriteUser"); 1820 } 1821 // No need to wrap it within a lock -- worst case, we'll just post the same message 1822 // twice. 1823 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1824 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1825 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1826 } 1827 } 1828 1829 /* 1830 * Writes the user file in this format: 1831 * 1832 * <user flags="20039023" id="0"> 1833 * <name>Primary</name> 1834 * </user> 1835 */ 1836 private void writeUserLP(UserData userData) { 1837 if (DBG) { 1838 debug("writeUserLP " + userData); 1839 } 1840 FileOutputStream fos = null; 1841 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1842 try { 1843 fos = userFile.startWrite(); 1844 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1845 1846 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1847 final XmlSerializer serializer = new FastXmlSerializer(); 1848 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1849 serializer.startDocument(null, true); 1850 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1851 1852 final UserInfo userInfo = userData.info; 1853 serializer.startTag(null, TAG_USER); 1854 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1855 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1856 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1857 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1858 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1859 Long.toString(userInfo.lastLoggedInTime)); 1860 if (userInfo.lastLoggedInFingerprint != null) { 1861 serializer.attribute(null, ATTR_LAST_LOGGED_IN_FINGERPRINT, 1862 userInfo.lastLoggedInFingerprint); 1863 } 1864 if (userInfo.iconPath != null) { 1865 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1866 } 1867 if (userInfo.partial) { 1868 serializer.attribute(null, ATTR_PARTIAL, "true"); 1869 } 1870 if (userInfo.guestToRemove) { 1871 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1872 } 1873 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1874 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1875 Integer.toString(userInfo.profileGroupId)); 1876 } 1877 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1878 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1879 Integer.toString(userInfo.restrictedProfileParentId)); 1880 } 1881 // Write seed data 1882 if (userData.persistSeedData) { 1883 if (userData.seedAccountName != null) { 1884 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 1885 } 1886 if (userData.seedAccountType != null) { 1887 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 1888 } 1889 } 1890 if (userInfo.name != null) { 1891 serializer.startTag(null, TAG_NAME); 1892 serializer.text(userInfo.name); 1893 serializer.endTag(null, TAG_NAME); 1894 } 1895 synchronized (mRestrictionsLock) { 1896 UserRestrictionsUtils.writeRestrictions(serializer, 1897 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1898 UserRestrictionsUtils.writeRestrictions(serializer, 1899 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1900 TAG_DEVICE_POLICY_RESTRICTIONS); 1901 } 1902 1903 if (userData.account != null) { 1904 serializer.startTag(null, TAG_ACCOUNT); 1905 serializer.text(userData.account); 1906 serializer.endTag(null, TAG_ACCOUNT); 1907 } 1908 1909 if (userData.persistSeedData && userData.seedAccountOptions != null) { 1910 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1911 userData.seedAccountOptions.saveToXml(serializer); 1912 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1913 } 1914 serializer.endTag(null, TAG_USER); 1915 1916 serializer.endDocument(); 1917 userFile.finishWrite(fos); 1918 } catch (Exception ioe) { 1919 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id, ioe); 1920 userFile.failWrite(fos); 1921 } 1922 } 1923 1924 /* 1925 * Writes the user list file in this format: 1926 * 1927 * <users nextSerialNumber="3"> 1928 * <user id="0"></user> 1929 * <user id="2"></user> 1930 * </users> 1931 */ 1932 private void writeUserListLP() { 1933 if (DBG) { 1934 debug("writeUserList"); 1935 } 1936 FileOutputStream fos = null; 1937 AtomicFile userListFile = new AtomicFile(mUserListFile); 1938 try { 1939 fos = userListFile.startWrite(); 1940 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1941 1942 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1943 final XmlSerializer serializer = new FastXmlSerializer(); 1944 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1945 serializer.startDocument(null, true); 1946 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1947 1948 serializer.startTag(null, TAG_USERS); 1949 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1950 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1951 1952 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1953 synchronized (mGuestRestrictions) { 1954 UserRestrictionsUtils 1955 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1956 } 1957 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1958 synchronized (mRestrictionsLock) { 1959 UserRestrictionsUtils.writeRestrictions(serializer, 1960 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1961 } 1962 serializer.startTag(null, TAG_GLOBAL_RESTRICTION_OWNER_ID); 1963 serializer.attribute(null, ATTR_ID, Integer.toString(mGlobalRestrictionOwnerUserId)); 1964 serializer.endTag(null, TAG_GLOBAL_RESTRICTION_OWNER_ID); 1965 int[] userIdsToWrite; 1966 synchronized (mUsersLock) { 1967 userIdsToWrite = new int[mUsers.size()]; 1968 for (int i = 0; i < userIdsToWrite.length; i++) { 1969 UserInfo user = mUsers.valueAt(i).info; 1970 userIdsToWrite[i] = user.id; 1971 } 1972 } 1973 for (int id : userIdsToWrite) { 1974 serializer.startTag(null, TAG_USER); 1975 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1976 serializer.endTag(null, TAG_USER); 1977 } 1978 1979 serializer.endTag(null, TAG_USERS); 1980 1981 serializer.endDocument(); 1982 userListFile.finishWrite(fos); 1983 } catch (Exception e) { 1984 userListFile.failWrite(fos); 1985 Slog.e(LOG_TAG, "Error writing user list"); 1986 } 1987 } 1988 1989 private UserData readUserLP(int id) { 1990 int flags = 0; 1991 int serialNumber = id; 1992 String name = null; 1993 String account = null; 1994 String iconPath = null; 1995 long creationTime = 0L; 1996 long lastLoggedInTime = 0L; 1997 String lastLoggedInFingerprint = null; 1998 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 1999 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 2000 boolean partial = false; 2001 boolean guestToRemove = false; 2002 boolean persistSeedData = false; 2003 String seedAccountName = null; 2004 String seedAccountType = null; 2005 PersistableBundle seedAccountOptions = null; 2006 Bundle baseRestrictions = new Bundle(); 2007 Bundle localRestrictions = new Bundle(); 2008 2009 FileInputStream fis = null; 2010 try { 2011 AtomicFile userFile = 2012 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 2013 fis = userFile.openRead(); 2014 XmlPullParser parser = Xml.newPullParser(); 2015 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2016 int type; 2017 while ((type = parser.next()) != XmlPullParser.START_TAG 2018 && type != XmlPullParser.END_DOCUMENT) { 2019 // Skip 2020 } 2021 2022 if (type != XmlPullParser.START_TAG) { 2023 Slog.e(LOG_TAG, "Unable to read user " + id); 2024 return null; 2025 } 2026 2027 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 2028 int storedId = readIntAttribute(parser, ATTR_ID, -1); 2029 if (storedId != id) { 2030 Slog.e(LOG_TAG, "User id does not match the file name"); 2031 return null; 2032 } 2033 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 2034 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 2035 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 2036 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 2037 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 2038 lastLoggedInFingerprint = parser.getAttributeValue(null, 2039 ATTR_LAST_LOGGED_IN_FINGERPRINT); 2040 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 2041 UserInfo.NO_PROFILE_GROUP_ID); 2042 restrictedProfileParentId = readIntAttribute(parser, 2043 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 2044 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 2045 if ("true".equals(valueString)) { 2046 partial = true; 2047 } 2048 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 2049 if ("true".equals(valueString)) { 2050 guestToRemove = true; 2051 } 2052 2053 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 2054 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 2055 if (seedAccountName != null || seedAccountType != null) { 2056 persistSeedData = true; 2057 } 2058 2059 int outerDepth = parser.getDepth(); 2060 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 2061 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2062 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2063 continue; 2064 } 2065 String tag = parser.getName(); 2066 if (TAG_NAME.equals(tag)) { 2067 type = parser.next(); 2068 if (type == XmlPullParser.TEXT) { 2069 name = parser.getText(); 2070 } 2071 } else if (TAG_RESTRICTIONS.equals(tag)) { 2072 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 2073 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 2074 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 2075 } else if (TAG_ACCOUNT.equals(tag)) { 2076 type = parser.next(); 2077 if (type == XmlPullParser.TEXT) { 2078 account = parser.getText(); 2079 } 2080 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 2081 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 2082 persistSeedData = true; 2083 } 2084 } 2085 } 2086 2087 // Create the UserInfo object that gets passed around 2088 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 2089 userInfo.serialNumber = serialNumber; 2090 userInfo.creationTime = creationTime; 2091 userInfo.lastLoggedInTime = lastLoggedInTime; 2092 userInfo.lastLoggedInFingerprint = lastLoggedInFingerprint; 2093 userInfo.partial = partial; 2094 userInfo.guestToRemove = guestToRemove; 2095 userInfo.profileGroupId = profileGroupId; 2096 userInfo.restrictedProfileParentId = restrictedProfileParentId; 2097 2098 // Create the UserData object that's internal to this class 2099 UserData userData = new UserData(); 2100 userData.info = userInfo; 2101 userData.account = account; 2102 userData.seedAccountName = seedAccountName; 2103 userData.seedAccountType = seedAccountType; 2104 userData.persistSeedData = persistSeedData; 2105 userData.seedAccountOptions = seedAccountOptions; 2106 2107 synchronized (mRestrictionsLock) { 2108 mBaseUserRestrictions.put(id, baseRestrictions); 2109 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 2110 } 2111 return userData; 2112 } catch (IOException ioe) { 2113 } catch (XmlPullParserException pe) { 2114 } finally { 2115 if (fis != null) { 2116 try { 2117 fis.close(); 2118 } catch (IOException e) { 2119 } 2120 } 2121 } 2122 return null; 2123 } 2124 2125 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 2126 String valueString = parser.getAttributeValue(null, attr); 2127 if (valueString == null) return defaultValue; 2128 try { 2129 return Integer.parseInt(valueString); 2130 } catch (NumberFormatException nfe) { 2131 return defaultValue; 2132 } 2133 } 2134 2135 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 2136 String valueString = parser.getAttributeValue(null, attr); 2137 if (valueString == null) return defaultValue; 2138 try { 2139 return Long.parseLong(valueString); 2140 } catch (NumberFormatException nfe) { 2141 return defaultValue; 2142 } 2143 } 2144 2145 /** 2146 * Removes the app restrictions file for a specific package and user id, if it exists. 2147 */ 2148 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 2149 synchronized (mPackagesLock) { 2150 File dir = Environment.getUserSystemDirectory(userId); 2151 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 2152 if (resFile.exists()) { 2153 resFile.delete(); 2154 } 2155 } 2156 } 2157 2158 @Override 2159 public UserInfo createProfileForUser(String name, int flags, int userId) { 2160 checkManageOrCreateUsersPermission(flags); 2161 return createUserInternal(name, flags, userId); 2162 } 2163 2164 @Override 2165 public UserInfo createUser(String name, int flags) { 2166 checkManageOrCreateUsersPermission(flags); 2167 return createUserInternal(name, flags, UserHandle.USER_NULL); 2168 } 2169 2170 private UserInfo createUserInternal(String name, int flags, int parentId) { 2171 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 2172 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 2173 return null; 2174 } 2175 return createUserInternalUnchecked(name, flags, parentId); 2176 } 2177 2178 private UserInfo createUserInternalUnchecked(String name, int flags, int parentId) { 2179 if (ActivityManager.isLowRamDeviceStatic()) { 2180 return null; 2181 } 2182 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 2183 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 2184 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 2185 final boolean isDemo = (flags & UserInfo.FLAG_DEMO) != 0; 2186 final long ident = Binder.clearCallingIdentity(); 2187 UserInfo userInfo; 2188 UserData userData; 2189 final int userId; 2190 try { 2191 synchronized (mPackagesLock) { 2192 UserData parent = null; 2193 if (parentId != UserHandle.USER_NULL) { 2194 synchronized (mUsersLock) { 2195 parent = getUserDataLU(parentId); 2196 } 2197 if (parent == null) return null; 2198 } 2199 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 2200 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 2201 return null; 2202 } 2203 if (!isGuest && !isManagedProfile && !isDemo && isUserLimitReached()) { 2204 // If we're not adding a guest/demo user or a managed profile and the limit has 2205 // been reached, cannot add a user. 2206 return null; 2207 } 2208 // If we're adding a guest and there already exists one, bail. 2209 if (isGuest && findCurrentGuestUser() != null) { 2210 return null; 2211 } 2212 // In legacy mode, restricted profile's parent can only be the owner user 2213 if (isRestricted && !UserManager.isSplitSystemUser() 2214 && (parentId != UserHandle.USER_SYSTEM)) { 2215 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 2216 return null; 2217 } 2218 if (isRestricted && UserManager.isSplitSystemUser()) { 2219 if (parent == null) { 2220 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 2221 + "specified"); 2222 return null; 2223 } 2224 if (!parent.info.canHaveProfile()) { 2225 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 2226 + "created for the specified parent user id " + parentId); 2227 return null; 2228 } 2229 } 2230 if (!UserManager.isSplitSystemUser() && (flags & UserInfo.FLAG_EPHEMERAL) != 0 2231 && (flags & UserInfo.FLAG_DEMO) == 0) { 2232 Log.e(LOG_TAG, 2233 "Ephemeral users are supported on split-system-user systems only."); 2234 return null; 2235 } 2236 // In split system user mode, we assign the first human user the primary flag. 2237 // And if there is no device owner, we also assign the admin flag to primary user. 2238 if (UserManager.isSplitSystemUser() 2239 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 2240 flags |= UserInfo.FLAG_PRIMARY; 2241 synchronized (mUsersLock) { 2242 if (!mIsDeviceManaged) { 2243 flags |= UserInfo.FLAG_ADMIN; 2244 } 2245 } 2246 } 2247 2248 userId = getNextAvailableId(); 2249 Environment.getUserSystemDirectory(userId).mkdirs(); 2250 boolean ephemeralGuests = Resources.getSystem() 2251 .getBoolean(com.android.internal.R.bool.config_guestUserEphemeral); 2252 2253 synchronized (mUsersLock) { 2254 // Add ephemeral flag to guests/users if required. Also inherit it from parent. 2255 if ((isGuest && ephemeralGuests) || mForceEphemeralUsers 2256 || (parent != null && parent.info.isEphemeral())) { 2257 flags |= UserInfo.FLAG_EPHEMERAL; 2258 } 2259 2260 userInfo = new UserInfo(userId, name, null, flags); 2261 userInfo.serialNumber = mNextSerialNumber++; 2262 long now = System.currentTimeMillis(); 2263 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 2264 userInfo.partial = true; 2265 userInfo.lastLoggedInFingerprint = Build.FINGERPRINT; 2266 userData = new UserData(); 2267 userData.info = userInfo; 2268 mUsers.put(userId, userData); 2269 } 2270 writeUserLP(userData); 2271 writeUserListLP(); 2272 if (parent != null) { 2273 if (isManagedProfile) { 2274 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 2275 parent.info.profileGroupId = parent.info.id; 2276 writeUserLP(parent); 2277 } 2278 userInfo.profileGroupId = parent.info.profileGroupId; 2279 } else if (isRestricted) { 2280 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 2281 parent.info.restrictedProfileParentId = parent.info.id; 2282 writeUserLP(parent); 2283 } 2284 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 2285 } 2286 } 2287 } 2288 final StorageManager storage = mContext.getSystemService(StorageManager.class); 2289 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 2290 mPm.prepareUserData(userId, userInfo.serialNumber, 2291 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 2292 mPm.createNewUser(userId); 2293 userInfo.partial = false; 2294 synchronized (mPackagesLock) { 2295 writeUserLP(userData); 2296 } 2297 updateUserIds(); 2298 Bundle restrictions = new Bundle(); 2299 if (isGuest) { 2300 synchronized (mGuestRestrictions) { 2301 restrictions.putAll(mGuestRestrictions); 2302 } 2303 } 2304 synchronized (mRestrictionsLock) { 2305 mBaseUserRestrictions.append(userId, restrictions); 2306 } 2307 mPm.onNewUserCreated(userId); 2308 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 2309 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 2310 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 2311 android.Manifest.permission.MANAGE_USERS); 2312 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 2313 } finally { 2314 Binder.restoreCallingIdentity(ident); 2315 } 2316 return userInfo; 2317 } 2318 2319 /** 2320 * @hide 2321 */ 2322 @Override 2323 public UserInfo createRestrictedProfile(String name, int parentUserId) { 2324 checkManageOrCreateUsersPermission("setupRestrictedProfile"); 2325 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 2326 if (user == null) { 2327 return null; 2328 } 2329 long identity = Binder.clearCallingIdentity(); 2330 try { 2331 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 2332 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 2333 // the putIntForUser() will fail. 2334 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 2335 android.provider.Settings.Secure.LOCATION_MODE, 2336 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 2337 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 2338 } finally { 2339 Binder.restoreCallingIdentity(identity); 2340 } 2341 return user; 2342 } 2343 2344 /** 2345 * Find the current guest user. If the Guest user is partial, 2346 * then do not include it in the results as it is about to die. 2347 */ 2348 private UserInfo findCurrentGuestUser() { 2349 synchronized (mUsersLock) { 2350 final int size = mUsers.size(); 2351 for (int i = 0; i < size; i++) { 2352 final UserInfo user = mUsers.valueAt(i).info; 2353 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 2354 return user; 2355 } 2356 } 2357 } 2358 return null; 2359 } 2360 2361 /** 2362 * Mark this guest user for deletion to allow us to create another guest 2363 * and switch to that user before actually removing this guest. 2364 * @param userHandle the userid of the current guest 2365 * @return whether the user could be marked for deletion 2366 */ 2367 @Override 2368 public boolean markGuestForDeletion(int userHandle) { 2369 checkManageUsersPermission("Only the system can remove users"); 2370 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2371 UserManager.DISALLOW_REMOVE_USER, false)) { 2372 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2373 return false; 2374 } 2375 2376 long ident = Binder.clearCallingIdentity(); 2377 try { 2378 final UserData userData; 2379 synchronized (mPackagesLock) { 2380 synchronized (mUsersLock) { 2381 userData = mUsers.get(userHandle); 2382 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2383 return false; 2384 } 2385 } 2386 if (!userData.info.isGuest()) { 2387 return false; 2388 } 2389 // We set this to a guest user that is to be removed. This is a temporary state 2390 // where we are allowed to add new Guest users, even if this one is still not 2391 // removed. This user will still show up in getUserInfo() calls. 2392 // If we don't get around to removing this Guest user, it will be purged on next 2393 // startup. 2394 userData.info.guestToRemove = true; 2395 // Mark it as disabled, so that it isn't returned any more when 2396 // profiles are queried. 2397 userData.info.flags |= UserInfo.FLAG_DISABLED; 2398 writeUserLP(userData); 2399 } 2400 } finally { 2401 Binder.restoreCallingIdentity(ident); 2402 } 2403 return true; 2404 } 2405 2406 /** 2407 * Removes a user and all data directories created for that user. This method should be called 2408 * after the user's processes have been terminated. 2409 * @param userHandle the user's id 2410 */ 2411 @Override 2412 public boolean removeUser(int userHandle) { 2413 checkManageOrCreateUsersPermission("Only the system can remove users"); 2414 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2415 UserManager.DISALLOW_REMOVE_USER, false)) { 2416 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2417 return false; 2418 } 2419 2420 long ident = Binder.clearCallingIdentity(); 2421 try { 2422 final UserData userData; 2423 int currentUser = ActivityManager.getCurrentUser(); 2424 if (currentUser == userHandle) { 2425 Log.w(LOG_TAG, "Current user cannot be removed"); 2426 return false; 2427 } 2428 synchronized (mPackagesLock) { 2429 synchronized (mUsersLock) { 2430 userData = mUsers.get(userHandle); 2431 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2432 return false; 2433 } 2434 2435 // We remember deleted user IDs to prevent them from being 2436 // reused during the current boot; they can still be reused 2437 // after a reboot. 2438 mRemovingUserIds.put(userHandle, true); 2439 } 2440 2441 try { 2442 mAppOpsService.removeUser(userHandle); 2443 } catch (RemoteException e) { 2444 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2445 } 2446 // Set this to a partially created user, so that the user will be purged 2447 // on next startup, in case the runtime stops now before stopping and 2448 // removing the user completely. 2449 userData.info.partial = true; 2450 // Mark it as disabled, so that it isn't returned any more when 2451 // profiles are queried. 2452 userData.info.flags |= UserInfo.FLAG_DISABLED; 2453 writeUserLP(userData); 2454 } 2455 2456 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2457 && userData.info.isManagedProfile()) { 2458 // Send broadcast to notify system that the user removed was a 2459 // managed user. 2460 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2461 } 2462 2463 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2464 int res; 2465 try { 2466 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 2467 new IStopUserCallback.Stub() { 2468 @Override 2469 public void userStopped(int userId) { 2470 finishRemoveUser(userId); 2471 } 2472 @Override 2473 public void userStopAborted(int userId) { 2474 } 2475 }); 2476 } catch (RemoteException e) { 2477 return false; 2478 } 2479 return res == ActivityManager.USER_OP_SUCCESS; 2480 } finally { 2481 Binder.restoreCallingIdentity(ident); 2482 } 2483 } 2484 2485 void finishRemoveUser(final int userHandle) { 2486 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2487 // Let other services shutdown any activity and clean up their state before completely 2488 // wiping the user's system directory and removing from the user list 2489 long ident = Binder.clearCallingIdentity(); 2490 try { 2491 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2492 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2493 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2494 android.Manifest.permission.MANAGE_USERS, 2495 2496 new BroadcastReceiver() { 2497 @Override 2498 public void onReceive(Context context, Intent intent) { 2499 if (DBG) { 2500 Slog.i(LOG_TAG, 2501 "USER_REMOVED broadcast sent, cleaning up user data " 2502 + userHandle); 2503 } 2504 new Thread() { 2505 @Override 2506 public void run() { 2507 // Clean up any ActivityManager state 2508 LocalServices.getService(ActivityManagerInternal.class) 2509 .onUserRemoved(userHandle); 2510 removeUserState(userHandle); 2511 } 2512 }.start(); 2513 } 2514 }, 2515 2516 null, Activity.RESULT_OK, null, null); 2517 } finally { 2518 Binder.restoreCallingIdentity(ident); 2519 } 2520 } 2521 2522 private void removeUserState(final int userHandle) { 2523 try { 2524 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2525 } catch (IllegalStateException e) { 2526 // This may be simply because the user was partially created. 2527 Slog.i(LOG_TAG, 2528 "Destroying key for user " + userHandle + " failed, continuing anyway", e); 2529 } 2530 2531 // Cleanup gatekeeper secure user id 2532 try { 2533 final IGateKeeperService gk = GateKeeper.getService(); 2534 if (gk != null) { 2535 gk.clearSecureUserId(userHandle); 2536 } 2537 } catch (Exception ex) { 2538 Slog.w(LOG_TAG, "unable to clear GK secure user id"); 2539 } 2540 2541 // Cleanup package manager settings 2542 mPm.cleanUpUser(this, userHandle); 2543 2544 // Clean up all data before removing metadata 2545 mPm.destroyUserData(userHandle, 2546 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 2547 2548 // Remove this user from the list 2549 synchronized (mUsersLock) { 2550 mUsers.remove(userHandle); 2551 mIsUserManaged.delete(userHandle); 2552 } 2553 synchronized (mUserStates) { 2554 mUserStates.delete(userHandle); 2555 } 2556 synchronized (mRestrictionsLock) { 2557 mBaseUserRestrictions.remove(userHandle); 2558 mAppliedUserRestrictions.remove(userHandle); 2559 mCachedEffectiveUserRestrictions.remove(userHandle); 2560 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2561 } 2562 // Update the user list 2563 synchronized (mPackagesLock) { 2564 writeUserListLP(); 2565 } 2566 // Remove user file 2567 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2568 userFile.delete(); 2569 updateUserIds(); 2570 } 2571 2572 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2573 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2574 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2575 Intent.FLAG_RECEIVER_FOREGROUND); 2576 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2577 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2578 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2579 } 2580 2581 @Override 2582 public Bundle getApplicationRestrictions(String packageName) { 2583 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2584 } 2585 2586 @Override 2587 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2588 if (UserHandle.getCallingUserId() != userId 2589 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2590 checkSystemOrRoot("get application restrictions for other users/apps"); 2591 } 2592 synchronized (mPackagesLock) { 2593 // Read the restrictions from XML 2594 return readApplicationRestrictionsLP(packageName, userId); 2595 } 2596 } 2597 2598 @Override 2599 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2600 int userId) { 2601 checkSystemOrRoot("set application restrictions"); 2602 if (restrictions != null) { 2603 restrictions.setDefusable(true); 2604 } 2605 synchronized (mPackagesLock) { 2606 if (restrictions == null || restrictions.isEmpty()) { 2607 cleanAppRestrictionsForPackage(packageName, userId); 2608 } else { 2609 // Write the restrictions to XML 2610 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2611 } 2612 } 2613 2614 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2615 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2616 changeIntent.setPackage(packageName); 2617 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2618 mContext.sendBroadcastAsUser(changeIntent, UserHandle.of(userId)); 2619 } 2620 2621 private int getUidForPackage(String packageName) { 2622 long ident = Binder.clearCallingIdentity(); 2623 try { 2624 return mContext.getPackageManager().getApplicationInfo(packageName, 2625 PackageManager.MATCH_UNINSTALLED_PACKAGES).uid; 2626 } catch (NameNotFoundException nnfe) { 2627 return -1; 2628 } finally { 2629 Binder.restoreCallingIdentity(ident); 2630 } 2631 } 2632 2633 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2634 AtomicFile restrictionsFile = 2635 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2636 packageToRestrictionsFileName(packageName))); 2637 return readApplicationRestrictionsLP(restrictionsFile); 2638 } 2639 2640 @VisibleForTesting 2641 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2642 final Bundle restrictions = new Bundle(); 2643 final ArrayList<String> values = new ArrayList<>(); 2644 if (!restrictionsFile.getBaseFile().exists()) { 2645 return restrictions; 2646 } 2647 2648 FileInputStream fis = null; 2649 try { 2650 fis = restrictionsFile.openRead(); 2651 XmlPullParser parser = Xml.newPullParser(); 2652 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2653 XmlUtils.nextElement(parser); 2654 if (parser.getEventType() != XmlPullParser.START_TAG) { 2655 Slog.e(LOG_TAG, "Unable to read restrictions file " 2656 + restrictionsFile.getBaseFile()); 2657 return restrictions; 2658 } 2659 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2660 readEntry(restrictions, values, parser); 2661 } 2662 } catch (IOException|XmlPullParserException e) { 2663 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2664 } finally { 2665 IoUtils.closeQuietly(fis); 2666 } 2667 return restrictions; 2668 } 2669 2670 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2671 XmlPullParser parser) throws XmlPullParserException, IOException { 2672 int type = parser.getEventType(); 2673 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2674 String key = parser.getAttributeValue(null, ATTR_KEY); 2675 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2676 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2677 if (multiple != null) { 2678 values.clear(); 2679 int count = Integer.parseInt(multiple); 2680 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2681 if (type == XmlPullParser.START_TAG 2682 && parser.getName().equals(TAG_VALUE)) { 2683 values.add(parser.nextText().trim()); 2684 count--; 2685 } 2686 } 2687 String [] valueStrings = new String[values.size()]; 2688 values.toArray(valueStrings); 2689 restrictions.putStringArray(key, valueStrings); 2690 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2691 restrictions.putBundle(key, readBundleEntry(parser, values)); 2692 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2693 final int outerDepth = parser.getDepth(); 2694 ArrayList<Bundle> bundleList = new ArrayList<>(); 2695 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2696 Bundle childBundle = readBundleEntry(parser, values); 2697 bundleList.add(childBundle); 2698 } 2699 restrictions.putParcelableArray(key, 2700 bundleList.toArray(new Bundle[bundleList.size()])); 2701 } else { 2702 String value = parser.nextText().trim(); 2703 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2704 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2705 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2706 restrictions.putInt(key, Integer.parseInt(value)); 2707 } else { 2708 restrictions.putString(key, value); 2709 } 2710 } 2711 } 2712 } 2713 2714 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2715 throws IOException, XmlPullParserException { 2716 Bundle childBundle = new Bundle(); 2717 final int outerDepth = parser.getDepth(); 2718 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2719 readEntry(childBundle, values, parser); 2720 } 2721 return childBundle; 2722 } 2723 2724 private void writeApplicationRestrictionsLP(String packageName, 2725 Bundle restrictions, int userId) { 2726 AtomicFile restrictionsFile = new AtomicFile( 2727 new File(Environment.getUserSystemDirectory(userId), 2728 packageToRestrictionsFileName(packageName))); 2729 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2730 } 2731 2732 @VisibleForTesting 2733 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2734 FileOutputStream fos = null; 2735 try { 2736 fos = restrictionsFile.startWrite(); 2737 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2738 2739 final XmlSerializer serializer = new FastXmlSerializer(); 2740 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2741 serializer.startDocument(null, true); 2742 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2743 2744 serializer.startTag(null, TAG_RESTRICTIONS); 2745 writeBundle(restrictions, serializer); 2746 serializer.endTag(null, TAG_RESTRICTIONS); 2747 2748 serializer.endDocument(); 2749 restrictionsFile.finishWrite(fos); 2750 } catch (Exception e) { 2751 restrictionsFile.failWrite(fos); 2752 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2753 } 2754 } 2755 2756 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2757 throws IOException { 2758 for (String key : restrictions.keySet()) { 2759 Object value = restrictions.get(key); 2760 serializer.startTag(null, TAG_ENTRY); 2761 serializer.attribute(null, ATTR_KEY, key); 2762 2763 if (value instanceof Boolean) { 2764 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2765 serializer.text(value.toString()); 2766 } else if (value instanceof Integer) { 2767 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2768 serializer.text(value.toString()); 2769 } else if (value == null || value instanceof String) { 2770 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2771 serializer.text(value != null ? (String) value : ""); 2772 } else if (value instanceof Bundle) { 2773 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2774 writeBundle((Bundle) value, serializer); 2775 } else if (value instanceof Parcelable[]) { 2776 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2777 Parcelable[] array = (Parcelable[]) value; 2778 for (Parcelable parcelable : array) { 2779 if (!(parcelable instanceof Bundle)) { 2780 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2781 } 2782 serializer.startTag(null, TAG_ENTRY); 2783 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2784 writeBundle((Bundle) parcelable, serializer); 2785 serializer.endTag(null, TAG_ENTRY); 2786 } 2787 } else { 2788 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2789 String[] values = (String[]) value; 2790 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2791 for (String choice : values) { 2792 serializer.startTag(null, TAG_VALUE); 2793 serializer.text(choice != null ? choice : ""); 2794 serializer.endTag(null, TAG_VALUE); 2795 } 2796 } 2797 serializer.endTag(null, TAG_ENTRY); 2798 } 2799 } 2800 2801 @Override 2802 public int getUserSerialNumber(int userHandle) { 2803 synchronized (mUsersLock) { 2804 if (!exists(userHandle)) return -1; 2805 return getUserInfoLU(userHandle).serialNumber; 2806 } 2807 } 2808 2809 @Override 2810 public int getUserHandle(int userSerialNumber) { 2811 synchronized (mUsersLock) { 2812 for (int userId : mUserIds) { 2813 UserInfo info = getUserInfoLU(userId); 2814 if (info != null && info.serialNumber == userSerialNumber) return userId; 2815 } 2816 // Not found 2817 return -1; 2818 } 2819 } 2820 2821 @Override 2822 public long getUserCreationTime(int userHandle) { 2823 int callingUserId = UserHandle.getCallingUserId(); 2824 UserInfo userInfo = null; 2825 synchronized (mUsersLock) { 2826 if (callingUserId == userHandle) { 2827 userInfo = getUserInfoLU(userHandle); 2828 } else { 2829 UserInfo parent = getProfileParentLU(userHandle); 2830 if (parent != null && parent.id == callingUserId) { 2831 userInfo = getUserInfoLU(userHandle); 2832 } 2833 } 2834 } 2835 if (userInfo == null) { 2836 throw new SecurityException("userHandle can only be the calling user or a managed " 2837 + "profile associated with this user"); 2838 } 2839 return userInfo.creationTime; 2840 } 2841 2842 /** 2843 * Caches the list of user ids in an array, adjusting the array size when necessary. 2844 */ 2845 private void updateUserIds() { 2846 int num = 0; 2847 synchronized (mUsersLock) { 2848 final int userSize = mUsers.size(); 2849 for (int i = 0; i < userSize; i++) { 2850 if (!mUsers.valueAt(i).info.partial) { 2851 num++; 2852 } 2853 } 2854 final int[] newUsers = new int[num]; 2855 int n = 0; 2856 for (int i = 0; i < userSize; i++) { 2857 if (!mUsers.valueAt(i).info.partial) { 2858 newUsers[n++] = mUsers.keyAt(i); 2859 } 2860 } 2861 mUserIds = newUsers; 2862 } 2863 } 2864 2865 /** 2866 * Called right before a user is started. This gives us a chance to prepare 2867 * app storage and apply any user restrictions. 2868 */ 2869 public void onBeforeStartUser(int userId) { 2870 final int userSerial = getUserSerialNumber(userId); 2871 mPm.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_DE); 2872 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_DE); 2873 2874 if (userId != UserHandle.USER_SYSTEM) { 2875 synchronized (mRestrictionsLock) { 2876 applyUserRestrictionsLR(userId); 2877 } 2878 } 2879 2880 maybeInitializeDemoMode(userId); 2881 } 2882 2883 /** 2884 * Called right before a user is unlocked. This gives us a chance to prepare 2885 * app storage. 2886 */ 2887 public void onBeforeUnlockUser(@UserIdInt int userId) { 2888 final int userSerial = getUserSerialNumber(userId); 2889 mPm.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_CE); 2890 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_CE); 2891 } 2892 2893 /** 2894 * Make a note of the last started time of a user and do some cleanup. 2895 * This is called with ActivityManagerService lock held. 2896 * @param userId the user that was just foregrounded 2897 */ 2898 public void onUserLoggedIn(@UserIdInt int userId) { 2899 UserData userData = getUserDataNoChecks(userId); 2900 if (userData == null || userData.info.partial) { 2901 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2902 return; 2903 } 2904 2905 final long now = System.currentTimeMillis(); 2906 if (now > EPOCH_PLUS_30_YEARS) { 2907 userData.info.lastLoggedInTime = now; 2908 } 2909 userData.info.lastLoggedInFingerprint = Build.FINGERPRINT; 2910 scheduleWriteUser(userData); 2911 } 2912 2913 private void maybeInitializeDemoMode(int userId) { 2914 if (UserManager.isDeviceInDemoMode(mContext) && userId != UserHandle.USER_SYSTEM) { 2915 String demoLauncher = 2916 mContext.getResources().getString( 2917 com.android.internal.R.string.config_demoModeLauncherComponent); 2918 if (!TextUtils.isEmpty(demoLauncher)) { 2919 ComponentName componentToEnable = ComponentName.unflattenFromString(demoLauncher); 2920 String demoLauncherPkg = componentToEnable.getPackageName(); 2921 try { 2922 final IPackageManager iPm = AppGlobals.getPackageManager(); 2923 iPm.setComponentEnabledSetting(componentToEnable, 2924 PackageManager.COMPONENT_ENABLED_STATE_ENABLED, /* flags= */ 0, 2925 /* userId= */ userId); 2926 iPm.setApplicationEnabledSetting(demoLauncherPkg, 2927 PackageManager.COMPONENT_ENABLED_STATE_ENABLED, /* flags= */ 0, 2928 /* userId= */ userId, null); 2929 } catch (RemoteException re) { 2930 // Internal, shouldn't happen 2931 } 2932 } 2933 } 2934 } 2935 2936 /** 2937 * Returns the next available user id, filling in any holes in the ids. 2938 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2939 * for data and battery stats collection, or unexpected cross-talk. 2940 */ 2941 private int getNextAvailableId() { 2942 synchronized (mUsersLock) { 2943 int i = MIN_USER_ID; 2944 while (i < MAX_USER_ID) { 2945 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2946 return i; 2947 } 2948 i++; 2949 } 2950 } 2951 throw new IllegalStateException("No user id available!"); 2952 } 2953 2954 private String packageToRestrictionsFileName(String packageName) { 2955 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2956 } 2957 2958 /** 2959 * Enforce that serial number stored in user directory inode matches the 2960 * given expected value. Gracefully sets the serial number if currently 2961 * undefined. 2962 * 2963 * @throws IOException when problem extracting serial number, or serial 2964 * number is mismatched. 2965 */ 2966 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2967 if (StorageManager.isFileEncryptedEmulatedOnly()) { 2968 // When we're emulating FBE, the directory may have been chmod 2969 // 000'ed, meaning we can't read the serial number to enforce it; 2970 // instead of destroying the user, just log a warning. 2971 Slog.w(LOG_TAG, "Device is emulating FBE; assuming current serial number is valid"); 2972 return; 2973 } 2974 2975 final int foundSerial = getSerialNumber(file); 2976 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 2977 2978 if (foundSerial == -1) { 2979 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 2980 try { 2981 setSerialNumber(file, serialNumber); 2982 } catch (IOException e) { 2983 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 2984 } 2985 2986 } else if (foundSerial != serialNumber) { 2987 throw new IOException("Found serial number " + foundSerial 2988 + " doesn't match expected " + serialNumber); 2989 } 2990 } 2991 2992 /** 2993 * Set serial number stored in user directory inode. 2994 * 2995 * @throws IOException if serial number was already set 2996 */ 2997 private static void setSerialNumber(File file, int serialNumber) 2998 throws IOException { 2999 try { 3000 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 3001 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 3002 } catch (ErrnoException e) { 3003 throw e.rethrowAsIOException(); 3004 } 3005 } 3006 3007 /** 3008 * Return serial number stored in user directory inode. 3009 * 3010 * @return parsed serial number, or -1 if not set 3011 */ 3012 private static int getSerialNumber(File file) throws IOException { 3013 try { 3014 final byte[] buf = new byte[256]; 3015 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 3016 final String serial = new String(buf, 0, len); 3017 try { 3018 return Integer.parseInt(serial); 3019 } catch (NumberFormatException e) { 3020 throw new IOException("Bad serial number: " + serial); 3021 } 3022 } catch (ErrnoException e) { 3023 if (e.errno == OsConstants.ENODATA) { 3024 return -1; 3025 } else { 3026 throw e.rethrowAsIOException(); 3027 } 3028 } 3029 } 3030 3031 @Override 3032 public void setSeedAccountData(int userId, String accountName, String accountType, 3033 PersistableBundle accountOptions, boolean persist) { 3034 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 3035 synchronized (mPackagesLock) { 3036 final UserData userData; 3037 synchronized (mUsersLock) { 3038 userData = getUserDataLU(userId); 3039 if (userData == null) { 3040 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 3041 return; 3042 } 3043 userData.seedAccountName = accountName; 3044 userData.seedAccountType = accountType; 3045 userData.seedAccountOptions = accountOptions; 3046 userData.persistSeedData = persist; 3047 } 3048 if (persist) { 3049 writeUserLP(userData); 3050 } 3051 } 3052 } 3053 3054 @Override 3055 public String getSeedAccountName() throws RemoteException { 3056 checkManageUsersPermission("Cannot get seed account information"); 3057 synchronized (mUsersLock) { 3058 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3059 return userData.seedAccountName; 3060 } 3061 } 3062 3063 @Override 3064 public String getSeedAccountType() throws RemoteException { 3065 checkManageUsersPermission("Cannot get seed account information"); 3066 synchronized (mUsersLock) { 3067 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3068 return userData.seedAccountType; 3069 } 3070 } 3071 3072 @Override 3073 public PersistableBundle getSeedAccountOptions() throws RemoteException { 3074 checkManageUsersPermission("Cannot get seed account information"); 3075 synchronized (mUsersLock) { 3076 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3077 return userData.seedAccountOptions; 3078 } 3079 } 3080 3081 @Override 3082 public void clearSeedAccountData() throws RemoteException { 3083 checkManageUsersPermission("Cannot clear seed account information"); 3084 synchronized (mPackagesLock) { 3085 UserData userData; 3086 synchronized (mUsersLock) { 3087 userData = getUserDataLU(UserHandle.getCallingUserId()); 3088 if (userData == null) return; 3089 userData.clearSeedAccountData(); 3090 } 3091 writeUserLP(userData); 3092 } 3093 } 3094 3095 @Override 3096 public boolean someUserHasSeedAccount(String accountName, String accountType) 3097 throws RemoteException { 3098 checkManageUsersPermission("Cannot check seed account information"); 3099 synchronized (mUsersLock) { 3100 final int userSize = mUsers.size(); 3101 for (int i = 0; i < userSize; i++) { 3102 final UserData data = mUsers.valueAt(i); 3103 if (data.info.isInitialized()) continue; 3104 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 3105 continue; 3106 } 3107 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 3108 continue; 3109 } 3110 return true; 3111 } 3112 } 3113 return false; 3114 } 3115 3116 @Override 3117 public void onShellCommand(FileDescriptor in, FileDescriptor out, 3118 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 3119 (new Shell()).exec(this, in, out, err, args, resultReceiver); 3120 } 3121 3122 int onShellCommand(Shell shell, String cmd) { 3123 if (cmd == null) { 3124 return shell.handleDefaultCommands(cmd); 3125 } 3126 3127 final PrintWriter pw = shell.getOutPrintWriter(); 3128 try { 3129 switch(cmd) { 3130 case "list": 3131 return runList(pw); 3132 } 3133 } catch (RemoteException e) { 3134 pw.println("Remote exception: " + e); 3135 } 3136 return -1; 3137 } 3138 3139 private int runList(PrintWriter pw) throws RemoteException { 3140 final IActivityManager am = ActivityManagerNative.getDefault(); 3141 final List<UserInfo> users = getUsers(false); 3142 if (users == null) { 3143 pw.println("Error: couldn't get users"); 3144 return 1; 3145 } else { 3146 pw.println("Users:"); 3147 for (int i = 0; i < users.size(); i++) { 3148 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 3149 pw.println("\t" + users.get(i).toString() + running); 3150 } 3151 return 0; 3152 } 3153 } 3154 3155 @Override 3156 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3157 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 3158 != PackageManager.PERMISSION_GRANTED) { 3159 pw.println("Permission Denial: can't dump UserManager from from pid=" 3160 + Binder.getCallingPid() 3161 + ", uid=" + Binder.getCallingUid() 3162 + " without permission " 3163 + android.Manifest.permission.DUMP); 3164 return; 3165 } 3166 3167 long now = System.currentTimeMillis(); 3168 StringBuilder sb = new StringBuilder(); 3169 synchronized (mPackagesLock) { 3170 synchronized (mUsersLock) { 3171 pw.println("Users:"); 3172 for (int i = 0; i < mUsers.size(); i++) { 3173 UserData userData = mUsers.valueAt(i); 3174 if (userData == null) { 3175 continue; 3176 } 3177 UserInfo userInfo = userData.info; 3178 final int userId = userInfo.id; 3179 pw.print(" "); pw.print(userInfo); 3180 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 3181 if (mRemovingUserIds.get(userId)) { 3182 pw.print(" <removing> "); 3183 } 3184 if (userInfo.partial) { 3185 pw.print(" <partial>"); 3186 } 3187 pw.println(); 3188 pw.print(" Created: "); 3189 if (userInfo.creationTime == 0) { 3190 pw.println("<unknown>"); 3191 } else { 3192 sb.setLength(0); 3193 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 3194 sb.append(" ago"); 3195 pw.println(sb); 3196 } 3197 pw.print(" Last logged in: "); 3198 if (userInfo.lastLoggedInTime == 0) { 3199 pw.println("<unknown>"); 3200 } else { 3201 sb.setLength(0); 3202 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 3203 sb.append(" ago"); 3204 pw.println(sb); 3205 } 3206 pw.print(" Last logged in fingerprint: "); 3207 pw.println(userInfo.lastLoggedInFingerprint); 3208 pw.print(" Has profile owner: "); 3209 pw.println(mIsUserManaged.get(userId)); 3210 pw.println(" Restrictions:"); 3211 synchronized (mRestrictionsLock) { 3212 UserRestrictionsUtils.dumpRestrictions( 3213 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 3214 pw.println(" Device policy local restrictions:"); 3215 UserRestrictionsUtils.dumpRestrictions( 3216 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 3217 pw.println(" Effective restrictions:"); 3218 UserRestrictionsUtils.dumpRestrictions( 3219 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 3220 } 3221 3222 if (userData.account != null) { 3223 pw.print(" Account name: " + userData.account); 3224 pw.println(); 3225 } 3226 3227 if (userData.seedAccountName != null) { 3228 pw.print(" Seed account name: " + userData.seedAccountName); 3229 pw.println(); 3230 if (userData.seedAccountType != null) { 3231 pw.print(" account type: " + userData.seedAccountType); 3232 pw.println(); 3233 } 3234 if (userData.seedAccountOptions != null) { 3235 pw.print(" account options exist"); 3236 pw.println(); 3237 } 3238 } 3239 } 3240 } 3241 pw.println(); 3242 pw.println(" Device policy global restrictions:"); 3243 synchronized (mRestrictionsLock) { 3244 UserRestrictionsUtils 3245 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 3246 } 3247 pw.println(); 3248 pw.println(" Global restrictions owner id:" + mGlobalRestrictionOwnerUserId); 3249 pw.println(); 3250 pw.println(" Guest restrictions:"); 3251 synchronized (mGuestRestrictions) { 3252 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 3253 } 3254 synchronized (mUsersLock) { 3255 pw.println(); 3256 pw.println(" Device managed: " + mIsDeviceManaged); 3257 } 3258 synchronized (mUserStates) { 3259 pw.println(" Started users state: " + mUserStates); 3260 } 3261 // Dump some capabilities 3262 pw.println(); 3263 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 3264 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 3265 pw.println(" All guests ephemeral: " + Resources.getSystem().getBoolean( 3266 com.android.internal.R.bool.config_guestUserEphemeral)); 3267 } 3268 } 3269 3270 final class MainHandler extends Handler { 3271 3272 @Override 3273 public void handleMessage(Message msg) { 3274 switch (msg.what) { 3275 case WRITE_USER_MSG: 3276 removeMessages(WRITE_USER_MSG, msg.obj); 3277 synchronized (mPackagesLock) { 3278 int userId = ((UserData) msg.obj).info.id; 3279 UserData userData = getUserDataNoChecks(userId); 3280 if (userData != null) { 3281 writeUserLP(userData); 3282 } 3283 } 3284 } 3285 } 3286 } 3287 3288 /** 3289 * @param userId 3290 * @return whether the user has been initialized yet 3291 */ 3292 boolean isInitialized(int userId) { 3293 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 3294 } 3295 3296 private class LocalService extends UserManagerInternal { 3297 @Override 3298 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 3299 @Nullable Bundle globalRestrictions) { 3300 UserManagerService.this.setDevicePolicyUserRestrictionsInner(userId, localRestrictions, 3301 globalRestrictions); 3302 } 3303 3304 @Override 3305 public Bundle getBaseUserRestrictions(int userId) { 3306 synchronized (mRestrictionsLock) { 3307 return mBaseUserRestrictions.get(userId); 3308 } 3309 } 3310 3311 @Override 3312 public void setBaseUserRestrictionsByDpmsForMigration( 3313 int userId, Bundle baseRestrictions) { 3314 synchronized (mRestrictionsLock) { 3315 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 3316 invalidateEffectiveUserRestrictionsLR(userId); 3317 } 3318 3319 final UserData userData = getUserDataNoChecks(userId); 3320 synchronized (mPackagesLock) { 3321 if (userData != null) { 3322 writeUserLP(userData); 3323 } else { 3324 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 3325 } 3326 } 3327 } 3328 3329 @Override 3330 public boolean getUserRestriction(int userId, String key) { 3331 return getUserRestrictions(userId).getBoolean(key); 3332 } 3333 3334 @Override 3335 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 3336 synchronized (mUserRestrictionsListeners) { 3337 mUserRestrictionsListeners.add(listener); 3338 } 3339 } 3340 3341 @Override 3342 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 3343 synchronized (mUserRestrictionsListeners) { 3344 mUserRestrictionsListeners.remove(listener); 3345 } 3346 } 3347 3348 @Override 3349 public void setDeviceManaged(boolean isManaged) { 3350 synchronized (mUsersLock) { 3351 mIsDeviceManaged = isManaged; 3352 } 3353 } 3354 3355 @Override 3356 public void setUserManaged(int userId, boolean isManaged) { 3357 synchronized (mUsersLock) { 3358 mIsUserManaged.put(userId, isManaged); 3359 } 3360 } 3361 3362 @Override 3363 public void setUserIcon(int userId, Bitmap bitmap) { 3364 long ident = Binder.clearCallingIdentity(); 3365 try { 3366 synchronized (mPackagesLock) { 3367 UserData userData = getUserDataNoChecks(userId); 3368 if (userData == null || userData.info.partial) { 3369 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 3370 return; 3371 } 3372 writeBitmapLP(userData.info, bitmap); 3373 writeUserLP(userData); 3374 } 3375 sendUserInfoChangedBroadcast(userId); 3376 } finally { 3377 Binder.restoreCallingIdentity(ident); 3378 } 3379 } 3380 3381 @Override 3382 public void setForceEphemeralUsers(boolean forceEphemeralUsers) { 3383 synchronized (mUsersLock) { 3384 mForceEphemeralUsers = forceEphemeralUsers; 3385 } 3386 } 3387 3388 @Override 3389 public void removeAllUsers() { 3390 if (UserHandle.USER_SYSTEM == ActivityManager.getCurrentUser()) { 3391 // Remove the non-system users straight away. 3392 removeNonSystemUsers(); 3393 } else { 3394 // Switch to the system user first and then remove the other users. 3395 BroadcastReceiver userSwitchedReceiver = new BroadcastReceiver() { 3396 @Override 3397 public void onReceive(Context context, Intent intent) { 3398 int userId = 3399 intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3400 if (userId != UserHandle.USER_SYSTEM) { 3401 return; 3402 } 3403 mContext.unregisterReceiver(this); 3404 removeNonSystemUsers(); 3405 } 3406 }; 3407 IntentFilter userSwitchedFilter = new IntentFilter(); 3408 userSwitchedFilter.addAction(Intent.ACTION_USER_SWITCHED); 3409 mContext.registerReceiver( 3410 userSwitchedReceiver, userSwitchedFilter, null, mHandler); 3411 3412 // Switch to the system user. 3413 ActivityManager am = 3414 (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 3415 am.switchUser(UserHandle.USER_SYSTEM); 3416 } 3417 } 3418 3419 @Override 3420 public void onEphemeralUserStop(int userId) { 3421 synchronized (mUsersLock) { 3422 UserInfo userInfo = getUserInfoLU(userId); 3423 if (userInfo != null && userInfo.isEphemeral()) { 3424 // Do not allow switching back to the ephemeral user again as the user is going 3425 // to be deleted. 3426 userInfo.flags |= UserInfo.FLAG_DISABLED; 3427 if (userInfo.isGuest()) { 3428 // Indicate that the guest will be deleted after it stops. 3429 userInfo.guestToRemove = true; 3430 } 3431 } 3432 } 3433 } 3434 3435 @Override 3436 public UserInfo createUserEvenWhenDisallowed(String name, int flags) { 3437 UserInfo user = createUserInternalUnchecked(name, flags, UserHandle.USER_NULL); 3438 // Keep this in sync with UserManager.createUser 3439 if (user != null && !user.isAdmin()) { 3440 setUserRestriction(UserManager.DISALLOW_SMS, true, user.id); 3441 setUserRestriction(UserManager.DISALLOW_OUTGOING_CALLS, true, user.id); 3442 } 3443 return user; 3444 } 3445 3446 @Override 3447 public boolean isUserRunning(int userId) { 3448 synchronized (mUserStates) { 3449 return mUserStates.get(userId, -1) >= 0; 3450 } 3451 } 3452 3453 @Override 3454 public void setUserState(int userId, int userState) { 3455 synchronized (mUserStates) { 3456 mUserStates.put(userId, userState); 3457 } 3458 } 3459 3460 @Override 3461 public void removeUserState(int userId) { 3462 synchronized (mUserStates) { 3463 mUserStates.delete(userId); 3464 } 3465 } 3466 3467 @Override 3468 public boolean isUserUnlockingOrUnlocked(int userId) { 3469 synchronized (mUserStates) { 3470 int state = mUserStates.get(userId, -1); 3471 return (state == UserState.STATE_RUNNING_UNLOCKING) 3472 || (state == UserState.STATE_RUNNING_UNLOCKED); 3473 } 3474 } 3475 } 3476 3477 /* Remove all the users except of the system one. */ 3478 private void removeNonSystemUsers() { 3479 ArrayList<UserInfo> usersToRemove = new ArrayList<>(); 3480 synchronized (mUsersLock) { 3481 final int userSize = mUsers.size(); 3482 for (int i = 0; i < userSize; i++) { 3483 UserInfo ui = mUsers.valueAt(i).info; 3484 if (ui.id != UserHandle.USER_SYSTEM) { 3485 usersToRemove.add(ui); 3486 } 3487 } 3488 } 3489 for (UserInfo ui: usersToRemove) { 3490 removeUser(ui.id); 3491 } 3492 } 3493 3494 private class Shell extends ShellCommand { 3495 @Override 3496 public int onCommand(String cmd) { 3497 return onShellCommand(this, cmd); 3498 } 3499 3500 @Override 3501 public void onHelp() { 3502 final PrintWriter pw = getOutPrintWriter(); 3503 pw.println("User manager (user) commands:"); 3504 pw.println(" help"); 3505 pw.println(" Print this help text."); 3506 pw.println(""); 3507 pw.println(" list"); 3508 pw.println(" Prints all users on the system."); 3509 } 3510 } 3511 3512 private static void debug(String message) { 3513 Log.d(LOG_TAG, message + 3514 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 3515 } 3516} 3517