UserManagerService.java revision 6a40f09083fc52acc3309d0b04401fca02df6372
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.pm; 18 19import static android.content.Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS; 20import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK; 21 22import android.Manifest; 23import android.annotation.NonNull; 24import android.annotation.Nullable; 25import android.annotation.UserIdInt; 26import android.app.Activity; 27import android.app.ActivityManager; 28import android.app.ActivityManagerInternal; 29import android.app.ActivityManagerNative; 30import android.app.AppGlobals; 31import android.app.IActivityManager; 32import android.app.IStopUserCallback; 33import android.app.KeyguardManager; 34import android.app.PendingIntent; 35import android.content.BroadcastReceiver; 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.IntentFilter; 40import android.content.IntentSender; 41import android.content.pm.IPackageManager; 42import android.content.pm.PackageManager; 43import android.content.pm.PackageManager.NameNotFoundException; 44import android.content.pm.UserInfo; 45import android.content.res.Resources; 46import android.graphics.Bitmap; 47import android.os.Binder; 48import android.os.Build; 49import android.os.Bundle; 50import android.os.Debug; 51import android.os.Environment; 52import android.os.FileUtils; 53import android.os.Handler; 54import android.os.IBinder; 55import android.os.IUserManager; 56import android.os.Message; 57import android.os.ParcelFileDescriptor; 58import android.os.Parcelable; 59import android.os.PersistableBundle; 60import android.os.Process; 61import android.os.RemoteException; 62import android.os.ResultReceiver; 63import android.os.SELinux; 64import android.os.ServiceManager; 65import android.os.ShellCallback; 66import android.os.ShellCommand; 67import android.os.SystemProperties; 68import android.os.UserHandle; 69import android.os.UserManager; 70import android.os.UserManager.EnforcingUser; 71import android.os.UserManagerInternal; 72import android.os.UserManagerInternal.UserRestrictionsListener; 73import android.os.storage.StorageManager; 74import android.security.GateKeeper; 75import android.service.gatekeeper.IGateKeeperService; 76import android.system.ErrnoException; 77import android.system.Os; 78import android.system.OsConstants; 79import android.text.TextUtils; 80import android.util.AtomicFile; 81import android.util.IntArray; 82import android.util.Log; 83import android.util.Slog; 84import android.util.SparseArray; 85import android.util.SparseBooleanArray; 86import android.util.SparseIntArray; 87import android.util.TimeUtils; 88import android.util.Xml; 89 90import com.android.internal.annotations.GuardedBy; 91import com.android.internal.annotations.VisibleForTesting; 92import com.android.internal.app.IAppOpsService; 93import com.android.internal.logging.MetricsLogger; 94import com.android.internal.util.FastXmlSerializer; 95import com.android.internal.util.Preconditions; 96import com.android.internal.util.XmlUtils; 97import com.android.internal.widget.LockPatternUtils; 98import com.android.server.LocalServices; 99import com.android.server.SystemService; 100import com.android.server.am.UserState; 101import com.android.server.storage.DeviceStorageMonitorInternal; 102 103import libcore.io.IoUtils; 104import libcore.util.Objects; 105 106import org.xmlpull.v1.XmlPullParser; 107import org.xmlpull.v1.XmlPullParserException; 108import org.xmlpull.v1.XmlSerializer; 109 110import java.io.BufferedOutputStream; 111import java.io.File; 112import java.io.FileDescriptor; 113import java.io.FileInputStream; 114import java.io.FileNotFoundException; 115import java.io.FileOutputStream; 116import java.io.InputStream; 117import java.io.OutputStream; 118import java.io.IOException; 119import java.io.PrintWriter; 120import java.nio.charset.StandardCharsets; 121import java.util.ArrayList; 122import java.util.Collections; 123import java.util.LinkedList; 124import java.util.List; 125 126/** 127 * Service for {@link UserManager}. 128 * 129 * Method naming convention: 130 * <ul> 131 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 132 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 133 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 134 * </ul> 135 */ 136public class UserManagerService extends IUserManager.Stub { 137 138 private static final String LOG_TAG = "UserManagerService"; 139 static final boolean DBG = false; // DO NOT SUBMIT WITH TRUE 140 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 141 // Can be used for manual testing of id recycling 142 private static final boolean RELEASE_DELETED_USER_ID = false; // DO NOT SUBMIT WITH TRUE 143 144 private static final String TAG_NAME = "name"; 145 private static final String TAG_ACCOUNT = "account"; 146 private static final String ATTR_FLAGS = "flags"; 147 private static final String ATTR_ICON_PATH = "icon"; 148 private static final String ATTR_ID = "id"; 149 private static final String ATTR_CREATION_TIME = "created"; 150 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 151 private static final String ATTR_LAST_LOGGED_IN_FINGERPRINT = "lastLoggedInFingerprint"; 152 private static final String ATTR_SERIAL_NO = "serialNumber"; 153 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 154 private static final String ATTR_PARTIAL = "partial"; 155 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 156 private static final String ATTR_USER_VERSION = "version"; 157 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 158 private static final String ATTR_PROFILE_BADGE = "profileBadge"; 159 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 160 private static final String ATTR_SEED_ACCOUNT_NAME = "seedAccountName"; 161 private static final String ATTR_SEED_ACCOUNT_TYPE = "seedAccountType"; 162 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 163 private static final String TAG_USERS = "users"; 164 private static final String TAG_USER = "user"; 165 private static final String TAG_RESTRICTIONS = "restrictions"; 166 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 167 private static final String TAG_DEVICE_POLICY_GLOBAL_RESTRICTIONS = 168 "device_policy_global_restrictions"; 169 /** Legacy name for device owner id tag. */ 170 private static final String TAG_GLOBAL_RESTRICTION_OWNER_ID = "globalRestrictionOwnerUserId"; 171 private static final String TAG_DEVICE_OWNER_USER_ID = "deviceOwnerUserId"; 172 private static final String TAG_ENTRY = "entry"; 173 private static final String TAG_VALUE = "value"; 174 private static final String TAG_SEED_ACCOUNT_OPTIONS = "seedAccountOptions"; 175 private static final String ATTR_KEY = "key"; 176 private static final String ATTR_VALUE_TYPE = "type"; 177 private static final String ATTR_MULTIPLE = "m"; 178 179 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 180 private static final String ATTR_TYPE_STRING = "s"; 181 private static final String ATTR_TYPE_BOOLEAN = "b"; 182 private static final String ATTR_TYPE_INTEGER = "i"; 183 private static final String ATTR_TYPE_BUNDLE = "B"; 184 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 185 186 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 187 private static final String USER_LIST_FILENAME = "userlist.xml"; 188 private static final String USER_PHOTO_FILENAME = "photo.png"; 189 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 190 191 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 192 private static final String XML_SUFFIX = ".xml"; 193 194 private static final int ALLOWED_FLAGS_FOR_CREATE_USERS_PERMISSION = 195 UserInfo.FLAG_MANAGED_PROFILE 196 | UserInfo.FLAG_EPHEMERAL 197 | UserInfo.FLAG_RESTRICTED 198 | UserInfo.FLAG_GUEST 199 | UserInfo.FLAG_DEMO; 200 201 @VisibleForTesting 202 static final int MIN_USER_ID = 10; 203 // We need to keep process uid within Integer.MAX_VALUE. 204 @VisibleForTesting 205 static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 206 207 // Max size of the queue of recently removed users 208 @VisibleForTesting 209 static final int MAX_RECENTLY_REMOVED_IDS_SIZE = 100; 210 211 private static final int USER_VERSION = 7; 212 213 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 214 215 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 216 // without first making sure that the rest of the framework is prepared for it. 217 @VisibleForTesting 218 static final int MAX_MANAGED_PROFILES = 1; 219 220 static final int WRITE_USER_MSG = 1; 221 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 222 223 private static final String XATTR_SERIAL = "user.serial"; 224 225 // Tron counters 226 private static final String TRON_GUEST_CREATED = "users_guest_created"; 227 private static final String TRON_USER_CREATED = "users_user_created"; 228 229 private final Context mContext; 230 private final PackageManagerService mPm; 231 private final Object mPackagesLock; 232 // Short-term lock for internal state, when interaction/sync with PM is not required 233 private final Object mUsersLock = new Object(); 234 private final Object mRestrictionsLock = new Object(); 235 236 private final Handler mHandler; 237 238 private final File mUsersDir; 239 private final File mUserListFile; 240 241 private static final IBinder mUserRestriconToken = new Binder(); 242 243 /** 244 * User-related information that is used for persisting to flash. Only UserInfo is 245 * directly exposed to other system apps. 246 */ 247 @VisibleForTesting 248 static class UserData { 249 // Basic user information and properties 250 UserInfo info; 251 // Account name used when there is a strong association between a user and an account 252 String account; 253 // Account information for seeding into a newly created user. This could also be 254 // used for login validation for an existing user, for updating their credentials. 255 // In the latter case, data may not need to be persisted as it is only valid for the 256 // current login session. 257 String seedAccountName; 258 String seedAccountType; 259 PersistableBundle seedAccountOptions; 260 // Whether to perist the seed account information to be available after a boot 261 boolean persistSeedData; 262 263 void clearSeedAccountData() { 264 seedAccountName = null; 265 seedAccountType = null; 266 seedAccountOptions = null; 267 persistSeedData = false; 268 } 269 } 270 271 @GuardedBy("mUsersLock") 272 private final SparseArray<UserData> mUsers = new SparseArray<>(); 273 274 /** 275 * User restrictions set via UserManager. This doesn't include restrictions set by 276 * device owner / profile owners. Only non-empty restriction bundles are stored. 277 * 278 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 279 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 280 * maybe shared between {@link #mBaseUserRestrictions} and 281 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 282 * (Otherwise we won't be able to detect what restrictions have changed in 283 * {@link #updateUserRestrictionsInternalLR}. 284 */ 285 @GuardedBy("mRestrictionsLock") 286 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 287 288 /** 289 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 290 * with device / profile owner restrictions. We'll initialize it lazily; use 291 * {@link #getEffectiveUserRestrictions} to access it. 292 * 293 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 294 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 295 * maybe shared between {@link #mBaseUserRestrictions} and 296 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 297 * (Otherwise we won't be able to detect what restrictions have changed in 298 * {@link #updateUserRestrictionsInternalLR}. 299 */ 300 @GuardedBy("mRestrictionsLock") 301 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 302 303 /** 304 * User restrictions that have already been applied in 305 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 306 * that have changed since the last 307 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 308 */ 309 @GuardedBy("mRestrictionsLock") 310 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 311 312 /** 313 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 314 * that should be applied to all users, including guests. Only non-empty restriction bundles are 315 * stored. 316 */ 317 @GuardedBy("mRestrictionsLock") 318 private final SparseArray<Bundle> mDevicePolicyGlobalUserRestrictions = new SparseArray<>(); 319 320 /** 321 * Id of the user that set global restrictions. 322 */ 323 @GuardedBy("mRestrictionsLock") 324 private int mDeviceOwnerUserId = UserHandle.USER_NULL; 325 326 /** 327 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 328 * for each user. Only non-empty restriction bundles are stored. 329 */ 330 @GuardedBy("mRestrictionsLock") 331 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 332 333 @GuardedBy("mGuestRestrictions") 334 private final Bundle mGuestRestrictions = new Bundle(); 335 336 /** 337 * Set of user IDs being actively removed. Removed IDs linger in this set 338 * for several seconds to work around a VFS caching issue. 339 * Use {@link #addRemovingUserIdLocked(int)} to add elements to this array 340 */ 341 @GuardedBy("mUsersLock") 342 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 343 344 /** 345 * Queue of recently removed userIds. Used for recycling of userIds 346 */ 347 @GuardedBy("mUsersLock") 348 private final LinkedList<Integer> mRecentlyRemovedIds = new LinkedList<>(); 349 350 @GuardedBy("mUsersLock") 351 private int[] mUserIds; 352 @GuardedBy("mPackagesLock") 353 private int mNextSerialNumber; 354 private int mUserVersion = 0; 355 356 private IAppOpsService mAppOpsService; 357 358 private final LocalService mLocalService; 359 360 @GuardedBy("mUsersLock") 361 private boolean mIsDeviceManaged; 362 363 @GuardedBy("mUsersLock") 364 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 365 366 @GuardedBy("mUserRestrictionsListeners") 367 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 368 new ArrayList<>(); 369 370 private final LockPatternUtils mLockPatternUtils; 371 372 private final String ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK = 373 "com.android.server.pm.DISABLE_QUIET_MODE_AFTER_UNLOCK"; 374 375 private final BroadcastReceiver mDisableQuietModeCallback = new BroadcastReceiver() { 376 @Override 377 public void onReceive(Context context, Intent intent) { 378 if (ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK.equals(intent.getAction())) { 379 final IntentSender target = intent.getParcelableExtra(Intent.EXTRA_INTENT); 380 final int userHandle = intent.getIntExtra(Intent.EXTRA_USER_ID, 0); 381 setQuietModeEnabled(userHandle, false); 382 if (target != null) { 383 try { 384 mContext.startIntentSender(target, null, 0, 0, 0); 385 } catch (IntentSender.SendIntentException e) { 386 /* ignore */ 387 } 388 } 389 } 390 } 391 }; 392 393 /** 394 * Whether all users should be created ephemeral. 395 */ 396 @GuardedBy("mUsersLock") 397 private boolean mForceEphemeralUsers; 398 399 @GuardedBy("mUserStates") 400 private final SparseIntArray mUserStates = new SparseIntArray(); 401 402 private static UserManagerService sInstance; 403 404 public static UserManagerService getInstance() { 405 synchronized (UserManagerService.class) { 406 return sInstance; 407 } 408 } 409 410 public static class LifeCycle extends SystemService { 411 412 private UserManagerService mUms; 413 414 /** 415 * @param context 416 */ 417 public LifeCycle(Context context) { 418 super(context); 419 } 420 421 @Override 422 public void onStart() { 423 mUms = UserManagerService.getInstance(); 424 publishBinderService(Context.USER_SERVICE, mUms); 425 } 426 427 @Override 428 public void onBootPhase(int phase) { 429 if (phase == SystemService.PHASE_ACTIVITY_MANAGER_READY) { 430 mUms.cleanupPartialUsers(); 431 } 432 } 433 } 434 435 // TODO b/28848102 Add support for test dependencies injection 436 @VisibleForTesting 437 UserManagerService(Context context) { 438 this(context, null, new Object(), context.getCacheDir()); 439 } 440 441 /** 442 * Called by package manager to create the service. This is closely 443 * associated with the package manager, and the given lock is the 444 * package manager's own lock. 445 */ 446 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 447 this(context, pm, packagesLock, Environment.getDataDirectory()); 448 } 449 450 private UserManagerService(Context context, PackageManagerService pm, 451 Object packagesLock, File dataDir) { 452 mContext = context; 453 mPm = pm; 454 mPackagesLock = packagesLock; 455 mHandler = new MainHandler(); 456 synchronized (mPackagesLock) { 457 mUsersDir = new File(dataDir, USER_INFO_DIR); 458 mUsersDir.mkdirs(); 459 // Make zeroth user directory, for services to migrate their files to that location 460 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 461 userZeroDir.mkdirs(); 462 FileUtils.setPermissions(mUsersDir.toString(), 463 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 464 -1, -1); 465 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 466 initDefaultGuestRestrictions(); 467 readUserListLP(); 468 sInstance = this; 469 } 470 mLocalService = new LocalService(); 471 LocalServices.addService(UserManagerInternal.class, mLocalService); 472 mLockPatternUtils = new LockPatternUtils(mContext); 473 mUserStates.put(UserHandle.USER_SYSTEM, UserState.STATE_BOOTING); 474 } 475 476 void systemReady() { 477 mAppOpsService = IAppOpsService.Stub.asInterface( 478 ServiceManager.getService(Context.APP_OPS_SERVICE)); 479 480 synchronized (mRestrictionsLock) { 481 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 482 } 483 484 UserInfo currentGuestUser = findCurrentGuestUser(); 485 if (currentGuestUser != null && !hasUserRestriction( 486 UserManager.DISALLOW_CONFIG_WIFI, currentGuestUser.id)) { 487 // If a guest user currently exists, apply the DISALLOW_CONFIG_WIFI option 488 // to it, in case this guest was created in a previous version where this 489 // user restriction was not a default guest restriction. 490 setUserRestriction(UserManager.DISALLOW_CONFIG_WIFI, true, currentGuestUser.id); 491 } 492 493 mContext.registerReceiver(mDisableQuietModeCallback, 494 new IntentFilter(ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK), 495 null, mHandler); 496 } 497 498 void cleanupPartialUsers() { 499 // Prune out any partially created, partially removed and ephemeral users. 500 ArrayList<UserInfo> partials = new ArrayList<>(); 501 synchronized (mUsersLock) { 502 final int userSize = mUsers.size(); 503 for (int i = 0; i < userSize; i++) { 504 UserInfo ui = mUsers.valueAt(i).info; 505 if ((ui.partial || ui.guestToRemove || ui.isEphemeral()) && i != 0) { 506 partials.add(ui); 507 addRemovingUserIdLocked(ui.id); 508 ui.partial = true; 509 } 510 } 511 } 512 final int partialsSize = partials.size(); 513 for (int i = 0; i < partialsSize; i++) { 514 UserInfo ui = partials.get(i); 515 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 516 + " (name=" + ui.name + ")"); 517 removeUserState(ui.id); 518 } 519 } 520 521 @Override 522 public String getUserAccount(int userId) { 523 checkManageUserAndAcrossUsersFullPermission("get user account"); 524 synchronized (mUsersLock) { 525 return mUsers.get(userId).account; 526 } 527 } 528 529 @Override 530 public void setUserAccount(int userId, String accountName) { 531 checkManageUserAndAcrossUsersFullPermission("set user account"); 532 UserData userToUpdate = null; 533 synchronized (mPackagesLock) { 534 synchronized (mUsersLock) { 535 final UserData userData = mUsers.get(userId); 536 if (userData == null) { 537 Slog.e(LOG_TAG, "User not found for setting user account: u" + userId); 538 return; 539 } 540 String currentAccount = userData.account; 541 if (!Objects.equal(currentAccount, accountName)) { 542 userData.account = accountName; 543 userToUpdate = userData; 544 } 545 } 546 547 if (userToUpdate != null) { 548 writeUserLP(userToUpdate); 549 } 550 } 551 } 552 553 @Override 554 public UserInfo getPrimaryUser() { 555 checkManageUsersPermission("query users"); 556 synchronized (mUsersLock) { 557 final int userSize = mUsers.size(); 558 for (int i = 0; i < userSize; i++) { 559 UserInfo ui = mUsers.valueAt(i).info; 560 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 561 return ui; 562 } 563 } 564 } 565 return null; 566 } 567 568 @Override 569 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 570 checkManageOrCreateUsersPermission("query users"); 571 synchronized (mUsersLock) { 572 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 573 final int userSize = mUsers.size(); 574 for (int i = 0; i < userSize; i++) { 575 UserInfo ui = mUsers.valueAt(i).info; 576 if (ui.partial) { 577 continue; 578 } 579 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 580 users.add(userWithName(ui)); 581 } 582 } 583 return users; 584 } 585 } 586 587 @Override 588 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 589 boolean returnFullInfo = true; 590 if (userId != UserHandle.getCallingUserId()) { 591 checkManageOrCreateUsersPermission("getting profiles related to user " + userId); 592 } else { 593 returnFullInfo = hasManageUsersPermission(); 594 } 595 final long ident = Binder.clearCallingIdentity(); 596 try { 597 synchronized (mUsersLock) { 598 return getProfilesLU(userId, enabledOnly, returnFullInfo); 599 } 600 } finally { 601 Binder.restoreCallingIdentity(ident); 602 } 603 } 604 605 @Override 606 public int[] getProfileIds(int userId, boolean enabledOnly) { 607 if (userId != UserHandle.getCallingUserId()) { 608 checkManageOrCreateUsersPermission("getting profiles related to user " + userId); 609 } 610 final long ident = Binder.clearCallingIdentity(); 611 try { 612 synchronized (mUsersLock) { 613 return getProfileIdsLU(userId, enabledOnly).toArray(); 614 } 615 } finally { 616 Binder.restoreCallingIdentity(ident); 617 } 618 } 619 620 /** Assume permissions already checked and caller's identity cleared */ 621 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly, boolean fullInfo) { 622 IntArray profileIds = getProfileIdsLU(userId, enabledOnly); 623 ArrayList<UserInfo> users = new ArrayList<>(profileIds.size()); 624 for (int i = 0; i < profileIds.size(); i++) { 625 int profileId = profileIds.get(i); 626 UserInfo userInfo = mUsers.get(profileId).info; 627 // If full info is not required - clear PII data to prevent 3P apps from reading it 628 if (!fullInfo) { 629 userInfo = new UserInfo(userInfo); 630 userInfo.name = null; 631 userInfo.iconPath = null; 632 } else { 633 userInfo = userWithName(userInfo); 634 } 635 users.add(userInfo); 636 } 637 return users; 638 } 639 640 /** 641 * Assume permissions already checked and caller's identity cleared 642 */ 643 private IntArray getProfileIdsLU(int userId, boolean enabledOnly) { 644 UserInfo user = getUserInfoLU(userId); 645 IntArray result = new IntArray(mUsers.size()); 646 if (user == null) { 647 // Probably a dying user 648 return result; 649 } 650 final int userSize = mUsers.size(); 651 for (int i = 0; i < userSize; i++) { 652 UserInfo profile = mUsers.valueAt(i).info; 653 if (!isProfileOf(user, profile)) { 654 continue; 655 } 656 if (enabledOnly && !profile.isEnabled()) { 657 continue; 658 } 659 if (mRemovingUserIds.get(profile.id)) { 660 continue; 661 } 662 if (profile.partial) { 663 continue; 664 } 665 result.add(profile.id); 666 } 667 return result; 668 } 669 670 @Override 671 public int getCredentialOwnerProfile(int userHandle) { 672 checkManageUsersPermission("get the credential owner"); 673 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 674 synchronized (mUsersLock) { 675 UserInfo profileParent = getProfileParentLU(userHandle); 676 if (profileParent != null) { 677 return profileParent.id; 678 } 679 } 680 } 681 682 return userHandle; 683 } 684 685 @Override 686 public boolean isSameProfileGroup(int userId, int otherUserId) { 687 if (userId == otherUserId) return true; 688 checkManageUsersPermission("check if in the same profile group"); 689 return isSameProfileGroupNoChecks(userId, otherUserId); 690 } 691 692 private boolean isSameProfileGroupNoChecks(int userId, int otherUserId) { 693 synchronized (mUsersLock) { 694 UserInfo userInfo = getUserInfoLU(userId); 695 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 696 return false; 697 } 698 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 699 if (otherUserInfo == null 700 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 701 return false; 702 } 703 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 704 } 705 } 706 707 @Override 708 public UserInfo getProfileParent(int userHandle) { 709 checkManageUsersPermission("get the profile parent"); 710 synchronized (mUsersLock) { 711 return getProfileParentLU(userHandle); 712 } 713 } 714 715 private UserInfo getProfileParentLU(int userHandle) { 716 UserInfo profile = getUserInfoLU(userHandle); 717 if (profile == null) { 718 return null; 719 } 720 int parentUserId = profile.profileGroupId; 721 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 722 return null; 723 } else { 724 return getUserInfoLU(parentUserId); 725 } 726 } 727 728 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 729 return user.id == profile.id || 730 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 731 && user.profileGroupId == profile.profileGroupId); 732 } 733 734 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 735 UserHandle parentHandle, boolean inQuietMode) { 736 Intent intent = new Intent(); 737 if (inQuietMode) { 738 intent.setAction(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE); 739 } else { 740 intent.setAction(Intent.ACTION_MANAGED_PROFILE_AVAILABLE); 741 } 742 intent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 743 intent.putExtra(Intent.EXTRA_USER, profileHandle); 744 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 745 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 746 mContext.sendBroadcastAsUser(intent, parentHandle); 747 } 748 749 @Override 750 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 751 checkManageUsersPermission("silence profile"); 752 boolean changed = false; 753 UserInfo profile, parent; 754 synchronized (mPackagesLock) { 755 synchronized (mUsersLock) { 756 profile = getUserInfoLU(userHandle); 757 parent = getProfileParentLU(userHandle); 758 759 } 760 if (profile == null || !profile.isManagedProfile()) { 761 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 762 } 763 if (profile.isQuietModeEnabled() != enableQuietMode) { 764 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 765 writeUserLP(getUserDataLU(profile.id)); 766 changed = true; 767 } 768 } 769 if (changed) { 770 long identity = Binder.clearCallingIdentity(); 771 try { 772 if (enableQuietMode) { 773 ActivityManager.getService().stopUser(userHandle, /* force */true, null); 774 LocalServices.getService(ActivityManagerInternal.class) 775 .killForegroundAppsForUser(userHandle); 776 } else { 777 ActivityManager.getService().startUserInBackground(userHandle); 778 } 779 } catch (RemoteException e) { 780 Slog.e(LOG_TAG, "fail to start/stop user for quiet mode", e); 781 } finally { 782 Binder.restoreCallingIdentity(identity); 783 } 784 785 broadcastProfileAvailabilityChanges(profile.getUserHandle(), parent.getUserHandle(), 786 enableQuietMode); 787 } 788 } 789 790 @Override 791 public boolean isQuietModeEnabled(int userHandle) { 792 synchronized (mPackagesLock) { 793 UserInfo info; 794 synchronized (mUsersLock) { 795 info = getUserInfoLU(userHandle); 796 } 797 if (info == null || !info.isManagedProfile()) { 798 return false; 799 } 800 return info.isQuietModeEnabled(); 801 } 802 } 803 804 @Override 805 public boolean trySetQuietModeDisabled(int userHandle, IntentSender target) { 806 checkManageUsersPermission("silence profile"); 807 if (StorageManager.isUserKeyUnlocked(userHandle) 808 || !mLockPatternUtils.isSecure(userHandle)) { 809 // if the user is already unlocked, no need to show a profile challenge 810 setQuietModeEnabled(userHandle, false); 811 return true; 812 } 813 814 long identity = Binder.clearCallingIdentity(); 815 try { 816 // otherwise, we show a profile challenge to trigger decryption of the user 817 final KeyguardManager km = (KeyguardManager) mContext.getSystemService( 818 Context.KEYGUARD_SERVICE); 819 // We should use userHandle not credentialOwnerUserId here, as even if it is unified 820 // lock, confirm screenlock page will know and show personal challenge, and unlock 821 // work profile when personal challenge is correct 822 final Intent unlockIntent = km.createConfirmDeviceCredentialIntent(null, null, 823 userHandle); 824 if (unlockIntent == null) { 825 return false; 826 } 827 final Intent callBackIntent = new Intent( 828 ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK); 829 if (target != null) { 830 callBackIntent.putExtra(Intent.EXTRA_INTENT, target); 831 } 832 callBackIntent.putExtra(Intent.EXTRA_USER_ID, userHandle); 833 callBackIntent.setPackage(mContext.getPackageName()); 834 callBackIntent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); 835 final PendingIntent pendingIntent = PendingIntent.getBroadcast( 836 mContext, 837 0, 838 callBackIntent, 839 PendingIntent.FLAG_CANCEL_CURRENT | 840 PendingIntent.FLAG_ONE_SHOT | 841 PendingIntent.FLAG_IMMUTABLE); 842 // After unlocking the challenge, it will disable quiet mode and run the original 843 // intentSender 844 unlockIntent.putExtra(Intent.EXTRA_INTENT, pendingIntent.getIntentSender()); 845 unlockIntent.setFlags(FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS); 846 mContext.startActivity(unlockIntent); 847 } finally { 848 Binder.restoreCallingIdentity(identity); 849 } 850 return false; 851 } 852 853 @Override 854 public void setUserEnabled(int userId) { 855 checkManageUsersPermission("enable user"); 856 synchronized (mPackagesLock) { 857 UserInfo info; 858 synchronized (mUsersLock) { 859 info = getUserInfoLU(userId); 860 } 861 if (info != null && !info.isEnabled()) { 862 info.flags ^= UserInfo.FLAG_DISABLED; 863 writeUserLP(getUserDataLU(info.id)); 864 } 865 } 866 } 867 868 /** 869 * Evicts a user's CE key by stopping and restarting the user. 870 * 871 * The key is evicted automatically by the user controller when the user has stopped. 872 */ 873 @Override 874 public void evictCredentialEncryptionKey(@UserIdInt int userId) { 875 checkManageUsersPermission("evict CE key"); 876 final IActivityManager am = ActivityManagerNative.getDefault(); 877 final long identity = Binder.clearCallingIdentity(); 878 try { 879 am.restartUserInBackground(userId); 880 } catch (RemoteException re) { 881 throw re.rethrowAsRuntimeException(); 882 } finally { 883 Binder.restoreCallingIdentity(identity); 884 } 885 } 886 887 @Override 888 public UserInfo getUserInfo(int userId) { 889 checkManageOrCreateUsersPermission("query user"); 890 synchronized (mUsersLock) { 891 return userWithName(getUserInfoLU(userId)); 892 } 893 } 894 895 /** 896 * Returns a UserInfo object with the name filled in, for Owner, or the original 897 * if the name is already set. 898 */ 899 private UserInfo userWithName(UserInfo orig) { 900 if (orig != null && orig.name == null && orig.id == UserHandle.USER_SYSTEM) { 901 UserInfo withName = new UserInfo(orig); 902 withName.name = getOwnerName(); 903 return withName; 904 } else { 905 return orig; 906 } 907 } 908 909 @Override 910 public int getManagedProfileBadge(@UserIdInt int userId) { 911 int callingUserId = UserHandle.getCallingUserId(); 912 if (callingUserId != userId && !hasManageUsersPermission()) { 913 if (!isSameProfileGroupNoChecks(callingUserId, userId)) { 914 throw new SecurityException( 915 "You need MANAGE_USERS permission to: check if specified user a " + 916 "managed profile outside your profile group"); 917 } 918 } 919 synchronized (mUsersLock) { 920 UserInfo userInfo = getUserInfoLU(userId); 921 return userInfo != null ? userInfo.profileBadge : 0; 922 } 923 } 924 925 @Override 926 public boolean isManagedProfile(int userId) { 927 int callingUserId = UserHandle.getCallingUserId(); 928 if (callingUserId != userId && !hasManageUsersPermission()) { 929 if (!isSameProfileGroupNoChecks(callingUserId, userId)) { 930 throw new SecurityException( 931 "You need MANAGE_USERS permission to: check if specified user a " + 932 "managed profile outside your profile group"); 933 } 934 } 935 synchronized (mUsersLock) { 936 UserInfo userInfo = getUserInfoLU(userId); 937 return userInfo != null && userInfo.isManagedProfile(); 938 } 939 } 940 941 @Override 942 public boolean isUserUnlockingOrUnlocked(int userId) { 943 checkManageOrInteractPermIfCallerInOtherProfileGroup(userId, "isUserUnlockingOrUnlocked"); 944 return mLocalService.isUserUnlockingOrUnlocked(userId); 945 } 946 947 @Override 948 public boolean isUserUnlocked(int userId) { 949 checkManageOrInteractPermIfCallerInOtherProfileGroup(userId, "isUserUnlocked"); 950 return mLocalService.isUserUnlockingOrUnlocked(userId); 951 } 952 953 @Override 954 public boolean isUserRunning(int userId) { 955 checkManageOrInteractPermIfCallerInOtherProfileGroup(userId, "isUserRunning"); 956 return mLocalService.isUserRunning(userId); 957 } 958 959 private void checkManageOrInteractPermIfCallerInOtherProfileGroup(int userId, String name) { 960 int callingUserId = UserHandle.getCallingUserId(); 961 if (callingUserId == userId || isSameProfileGroupNoChecks(callingUserId, userId) || 962 hasManageUsersPermission()) { 963 return; 964 } 965 if (ActivityManager.checkComponentPermission(Manifest.permission.INTERACT_ACROSS_USERS, 966 Binder.getCallingUid(), -1, true) != PackageManager.PERMISSION_GRANTED) { 967 throw new SecurityException("You need INTERACT_ACROSS_USERS or MANAGE_USERS permission " 968 + "to: check " + name); 969 } 970 } 971 972 @Override 973 public boolean isDemoUser(int userId) { 974 int callingUserId = UserHandle.getCallingUserId(); 975 if (callingUserId != userId && !hasManageUsersPermission()) { 976 throw new SecurityException("You need MANAGE_USERS permission to query if u=" + userId 977 + " is a demo user"); 978 } 979 synchronized (mUsersLock) { 980 UserInfo userInfo = getUserInfoLU(userId); 981 return userInfo != null && userInfo.isDemo(); 982 } 983 } 984 985 @Override 986 public boolean isRestricted() { 987 synchronized (mUsersLock) { 988 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 989 } 990 } 991 992 @Override 993 public boolean canHaveRestrictedProfile(int userId) { 994 checkManageUsersPermission("canHaveRestrictedProfile"); 995 synchronized (mUsersLock) { 996 final UserInfo userInfo = getUserInfoLU(userId); 997 if (userInfo == null || !userInfo.canHaveProfile()) { 998 return false; 999 } 1000 if (!userInfo.isAdmin()) { 1001 return false; 1002 } 1003 // restricted profile can be created if there is no DO set and the admin user has no PO; 1004 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 1005 } 1006 } 1007 1008 /* 1009 * Should be locked on mUsers before calling this. 1010 */ 1011 private UserInfo getUserInfoLU(int userId) { 1012 final UserData userData = mUsers.get(userId); 1013 // If it is partial and not in the process of being removed, return as unknown user. 1014 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 1015 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 1016 return null; 1017 } 1018 return userData != null ? userData.info : null; 1019 } 1020 1021 private UserData getUserDataLU(int userId) { 1022 final UserData userData = mUsers.get(userId); 1023 // If it is partial and not in the process of being removed, return as unknown user. 1024 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 1025 return null; 1026 } 1027 return userData; 1028 } 1029 1030 /** 1031 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 1032 * <p>No permissions checking or any addition checks are made</p> 1033 */ 1034 private UserInfo getUserInfoNoChecks(int userId) { 1035 synchronized (mUsersLock) { 1036 final UserData userData = mUsers.get(userId); 1037 return userData != null ? userData.info : null; 1038 } 1039 } 1040 1041 /** 1042 * Obtains {@link #mUsersLock} and return UserData from mUsers. 1043 * <p>No permissions checking or any addition checks are made</p> 1044 */ 1045 private UserData getUserDataNoChecks(int userId) { 1046 synchronized (mUsersLock) { 1047 return mUsers.get(userId); 1048 } 1049 } 1050 1051 /** Called by PackageManagerService */ 1052 public boolean exists(int userId) { 1053 return getUserInfoNoChecks(userId) != null; 1054 } 1055 1056 @Override 1057 public void setUserName(int userId, String name) { 1058 checkManageUsersPermission("rename users"); 1059 boolean changed = false; 1060 synchronized (mPackagesLock) { 1061 UserData userData = getUserDataNoChecks(userId); 1062 if (userData == null || userData.info.partial) { 1063 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 1064 return; 1065 } 1066 if (name != null && !name.equals(userData.info.name)) { 1067 userData.info.name = name; 1068 writeUserLP(userData); 1069 changed = true; 1070 } 1071 } 1072 if (changed) { 1073 sendUserInfoChangedBroadcast(userId); 1074 } 1075 } 1076 1077 @Override 1078 public void setUserIcon(int userId, Bitmap bitmap) { 1079 checkManageUsersPermission("update users"); 1080 if (hasUserRestriction(UserManager.DISALLOW_SET_USER_ICON, userId)) { 1081 Log.w(LOG_TAG, "Cannot set user icon. DISALLOW_SET_USER_ICON is enabled."); 1082 return; 1083 } 1084 mLocalService.setUserIcon(userId, bitmap); 1085 } 1086 1087 1088 1089 private void sendUserInfoChangedBroadcast(int userId) { 1090 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 1091 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 1092 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1093 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 1094 } 1095 1096 @Override 1097 public ParcelFileDescriptor getUserIcon(int targetUserId) { 1098 String iconPath; 1099 synchronized (mPackagesLock) { 1100 UserInfo targetUserInfo = getUserInfoNoChecks(targetUserId); 1101 if (targetUserInfo == null || targetUserInfo.partial) { 1102 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + targetUserId); 1103 return null; 1104 } 1105 1106 final int callingUserId = UserHandle.getCallingUserId(); 1107 final int callingGroupId = getUserInfoNoChecks(callingUserId).profileGroupId; 1108 final int targetGroupId = targetUserInfo.profileGroupId; 1109 final boolean sameGroup = (callingGroupId != UserInfo.NO_PROFILE_GROUP_ID 1110 && callingGroupId == targetGroupId); 1111 if ((callingUserId != targetUserId) && !sameGroup) { 1112 checkManageUsersPermission("get the icon of a user who is not related"); 1113 } 1114 1115 if (targetUserInfo.iconPath == null) { 1116 return null; 1117 } 1118 iconPath = targetUserInfo.iconPath; 1119 } 1120 1121 try { 1122 return ParcelFileDescriptor.open( 1123 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 1124 } catch (FileNotFoundException e) { 1125 Log.e(LOG_TAG, "Couldn't find icon file", e); 1126 } 1127 return null; 1128 } 1129 1130 public void makeInitialized(int userId) { 1131 checkManageUsersPermission("makeInitialized"); 1132 boolean scheduleWriteUser = false; 1133 UserData userData; 1134 synchronized (mUsersLock) { 1135 userData = mUsers.get(userId); 1136 if (userData == null || userData.info.partial) { 1137 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 1138 return; 1139 } 1140 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1141 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1142 scheduleWriteUser = true; 1143 } 1144 } 1145 if (scheduleWriteUser) { 1146 scheduleWriteUser(userData); 1147 } 1148 } 1149 1150 /** 1151 * If default guest restrictions haven't been initialized yet, add the basic 1152 * restrictions. 1153 */ 1154 private void initDefaultGuestRestrictions() { 1155 synchronized (mGuestRestrictions) { 1156 if (mGuestRestrictions.isEmpty()) { 1157 mGuestRestrictions.putBoolean(UserManager.DISALLOW_CONFIG_WIFI, true); 1158 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 1159 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 1160 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 1161 } 1162 } 1163 } 1164 1165 @Override 1166 public Bundle getDefaultGuestRestrictions() { 1167 checkManageUsersPermission("getDefaultGuestRestrictions"); 1168 synchronized (mGuestRestrictions) { 1169 return new Bundle(mGuestRestrictions); 1170 } 1171 } 1172 1173 @Override 1174 public void setDefaultGuestRestrictions(Bundle restrictions) { 1175 checkManageUsersPermission("setDefaultGuestRestrictions"); 1176 synchronized (mGuestRestrictions) { 1177 mGuestRestrictions.clear(); 1178 mGuestRestrictions.putAll(restrictions); 1179 } 1180 synchronized (mPackagesLock) { 1181 writeUserListLP(); 1182 } 1183 } 1184 1185 /** 1186 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions} 1187 */ 1188 private void setDevicePolicyUserRestrictionsInner(int userId, @Nullable Bundle restrictions, 1189 boolean isDeviceOwner, int cameraRestrictionScope) { 1190 final Bundle global = new Bundle(); 1191 final Bundle local = new Bundle(); 1192 1193 // Sort restrictions into local and global ensuring they don't overlap. 1194 UserRestrictionsUtils.sortToGlobalAndLocal(restrictions, isDeviceOwner, 1195 cameraRestrictionScope, global, local); 1196 1197 boolean globalChanged, localChanged; 1198 synchronized (mRestrictionsLock) { 1199 // Update global and local restrictions if they were changed. 1200 globalChanged = updateRestrictionsIfNeededLR( 1201 userId, global, mDevicePolicyGlobalUserRestrictions); 1202 localChanged = updateRestrictionsIfNeededLR( 1203 userId, local, mDevicePolicyLocalUserRestrictions); 1204 1205 if (isDeviceOwner) { 1206 // Remember the global restriction owner userId to be able to make a distinction 1207 // in getUserRestrictionSource on who set local policies. 1208 mDeviceOwnerUserId = userId; 1209 } else { 1210 if (mDeviceOwnerUserId == userId) { 1211 // When profile owner sets restrictions it passes null global bundle and we 1212 // reset global restriction owner userId. 1213 // This means this user used to have DO, but now the DO is gone and the user 1214 // instead has PO. 1215 mDeviceOwnerUserId = UserHandle.USER_NULL; 1216 } 1217 } 1218 } 1219 if (DBG) { 1220 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 1221 + " global=" + global + (globalChanged ? " (changed)" : "") 1222 + " local=" + local + (localChanged ? " (changed)" : "") 1223 ); 1224 } 1225 // Don't call them within the mRestrictionsLock. 1226 synchronized (mPackagesLock) { 1227 if (localChanged || globalChanged) { 1228 writeUserLP(getUserDataNoChecks(userId)); 1229 } 1230 } 1231 1232 synchronized (mRestrictionsLock) { 1233 if (globalChanged) { 1234 applyUserRestrictionsForAllUsersLR(); 1235 } else if (localChanged) { 1236 applyUserRestrictionsLR(userId); 1237 } 1238 } 1239 } 1240 1241 /** 1242 * Updates restriction bundle for a given user in a given restriction array. If new bundle is 1243 * empty, record is removed from the array. 1244 * @return whether restrictions bundle is different from the old one. 1245 */ 1246 private boolean updateRestrictionsIfNeededLR(int userId, @Nullable Bundle restrictions, 1247 SparseArray<Bundle> restrictionsArray) { 1248 final boolean changed = 1249 !UserRestrictionsUtils.areEqual(restrictionsArray.get(userId), restrictions); 1250 if (changed) { 1251 if (!UserRestrictionsUtils.isEmpty(restrictions)) { 1252 restrictionsArray.put(userId, restrictions); 1253 } else { 1254 restrictionsArray.delete(userId); 1255 } 1256 } 1257 return changed; 1258 } 1259 1260 @GuardedBy("mRestrictionsLock") 1261 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 1262 final Bundle baseRestrictions = 1263 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 1264 final Bundle global = UserRestrictionsUtils.mergeAll(mDevicePolicyGlobalUserRestrictions); 1265 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 1266 1267 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 1268 // Common case first. 1269 return baseRestrictions; 1270 } 1271 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 1272 UserRestrictionsUtils.merge(effective, global); 1273 UserRestrictionsUtils.merge(effective, local); 1274 1275 return effective; 1276 } 1277 1278 @GuardedBy("mRestrictionsLock") 1279 private void invalidateEffectiveUserRestrictionsLR(int userId) { 1280 if (DBG) { 1281 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 1282 } 1283 mCachedEffectiveUserRestrictions.remove(userId); 1284 } 1285 1286 private Bundle getEffectiveUserRestrictions(int userId) { 1287 synchronized (mRestrictionsLock) { 1288 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 1289 if (restrictions == null) { 1290 restrictions = computeEffectiveUserRestrictionsLR(userId); 1291 mCachedEffectiveUserRestrictions.put(userId, restrictions); 1292 } 1293 return restrictions; 1294 } 1295 } 1296 1297 /** @return a specific user restriction that's in effect currently. */ 1298 @Override 1299 public boolean hasUserRestriction(String restrictionKey, int userId) { 1300 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1301 return false; 1302 } 1303 Bundle restrictions = getEffectiveUserRestrictions(userId); 1304 return restrictions != null && restrictions.getBoolean(restrictionKey); 1305 } 1306 1307 /** 1308 * @hide 1309 * 1310 * Returns who set a user restriction on a user. 1311 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 1312 * @param restrictionKey the string key representing the restriction 1313 * @param userId the id of the user for whom to retrieve the restrictions. 1314 * @return The source of user restriction. Any combination of 1315 * {@link UserManager#RESTRICTION_NOT_SET}, 1316 * {@link UserManager#RESTRICTION_SOURCE_SYSTEM}, 1317 * {@link UserManager#RESTRICTION_SOURCE_DEVICE_OWNER} 1318 * and {@link UserManager#RESTRICTION_SOURCE_PROFILE_OWNER} 1319 */ 1320 @Override 1321 public int getUserRestrictionSource(String restrictionKey, int userId) { 1322 List<EnforcingUser> enforcingUsers = getUserRestrictionSources(restrictionKey, userId); 1323 // Get "bitwise or" of restriction sources for all enforcing users. 1324 int result = UserManager.RESTRICTION_NOT_SET; 1325 for (int i = enforcingUsers.size() - 1; i >= 0; i--) { 1326 result |= enforcingUsers.get(i).getUserRestrictionSource(); 1327 } 1328 return result; 1329 } 1330 1331 @Override 1332 public List<EnforcingUser> getUserRestrictionSources( 1333 String restrictionKey, @UserIdInt int userId) { 1334 checkManageUsersPermission("getUserRestrictionSource"); 1335 1336 // Shortcut for the most common case 1337 if (!hasUserRestriction(restrictionKey, userId)) { 1338 return Collections.emptyList(); 1339 } 1340 1341 final List<EnforcingUser> result = new ArrayList<>(); 1342 1343 // Check if it is base restriction. 1344 if (hasBaseUserRestriction(restrictionKey, userId)) { 1345 result.add(new EnforcingUser( 1346 UserHandle.USER_NULL, UserManager.RESTRICTION_SOURCE_SYSTEM)); 1347 } 1348 1349 synchronized (mRestrictionsLock) { 1350 // Check if it is set by profile owner. 1351 Bundle profileOwnerRestrictions = mDevicePolicyLocalUserRestrictions.get(userId); 1352 if (UserRestrictionsUtils.contains(profileOwnerRestrictions, restrictionKey)) { 1353 result.add(getEnforcingUserLocked(userId)); 1354 } 1355 1356 // Iterate over all users who enforce global restrictions. 1357 for (int i = mDevicePolicyGlobalUserRestrictions.size() - 1; i >= 0; i--) { 1358 Bundle globalRestrictions = mDevicePolicyGlobalUserRestrictions.valueAt(i); 1359 int profileUserId = mDevicePolicyGlobalUserRestrictions.keyAt(i); 1360 if (UserRestrictionsUtils.contains(globalRestrictions, restrictionKey)) { 1361 result.add(getEnforcingUserLocked(profileUserId)); 1362 } 1363 } 1364 } 1365 return result; 1366 } 1367 1368 private EnforcingUser getEnforcingUserLocked(@UserIdInt int userId) { 1369 int source = mDeviceOwnerUserId == userId ? UserManager.RESTRICTION_SOURCE_DEVICE_OWNER 1370 : UserManager.RESTRICTION_SOURCE_PROFILE_OWNER; 1371 return new EnforcingUser(userId, source); 1372 } 1373 1374 /** 1375 * @return UserRestrictions that are in effect currently. This always returns a new 1376 * {@link Bundle}. 1377 */ 1378 @Override 1379 public Bundle getUserRestrictions(int userId) { 1380 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 1381 } 1382 1383 @Override 1384 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 1385 checkManageUsersPermission("hasBaseUserRestriction"); 1386 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1387 return false; 1388 } 1389 synchronized (mRestrictionsLock) { 1390 Bundle bundle = mBaseUserRestrictions.get(userId); 1391 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 1392 } 1393 } 1394 1395 @Override 1396 public void setUserRestriction(String key, boolean value, int userId) { 1397 checkManageUsersPermission("setUserRestriction"); 1398 if (!UserRestrictionsUtils.isValidRestriction(key)) { 1399 return; 1400 } 1401 synchronized (mRestrictionsLock) { 1402 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 1403 // a copy. 1404 final Bundle newRestrictions = UserRestrictionsUtils.clone( 1405 mBaseUserRestrictions.get(userId)); 1406 newRestrictions.putBoolean(key, value); 1407 1408 updateUserRestrictionsInternalLR(newRestrictions, userId); 1409 } 1410 } 1411 1412 /** 1413 * Optionally updating user restrictions, calculate the effective user restrictions and also 1414 * propagate to other services and system settings. 1415 * 1416 * @param newBaseRestrictions User restrictions to set. 1417 * If null, will not update user restrictions and only does the propagation. 1418 * @param userId target user ID. 1419 */ 1420 @GuardedBy("mRestrictionsLock") 1421 private void updateUserRestrictionsInternalLR( 1422 @Nullable Bundle newBaseRestrictions, int userId) { 1423 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 1424 mAppliedUserRestrictions.get(userId)); 1425 1426 // Update base restrictions. 1427 if (newBaseRestrictions != null) { 1428 // If newBaseRestrictions == the current one, it's probably a bug. 1429 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 1430 1431 Preconditions.checkState(prevBaseRestrictions != newBaseRestrictions); 1432 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 1433 != newBaseRestrictions); 1434 1435 if (updateRestrictionsIfNeededLR(userId, newBaseRestrictions, mBaseUserRestrictions)) { 1436 scheduleWriteUser(getUserDataNoChecks(userId)); 1437 } 1438 } 1439 1440 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 1441 1442 mCachedEffectiveUserRestrictions.put(userId, effective); 1443 1444 // Apply the new restrictions. 1445 if (DBG) { 1446 debug("Applying user restrictions: userId=" + userId 1447 + " new=" + effective + " prev=" + prevAppliedRestrictions); 1448 } 1449 1450 if (mAppOpsService != null) { // We skip it until system-ready. 1451 mHandler.post(new Runnable() { 1452 @Override 1453 public void run() { 1454 try { 1455 mAppOpsService.setUserRestrictions(effective, mUserRestriconToken, userId); 1456 } catch (RemoteException e) { 1457 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1458 } 1459 } 1460 }); 1461 } 1462 1463 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1464 1465 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1466 } 1467 1468 private void propagateUserRestrictionsLR(final int userId, 1469 Bundle newRestrictions, Bundle prevRestrictions) { 1470 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1471 // actually, but we still need some kind of synchronization otherwise we might end up 1472 // calling listeners out-of-order, thus "LR". 1473 1474 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1475 return; 1476 } 1477 1478 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1479 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1480 1481 mHandler.post(new Runnable() { 1482 @Override 1483 public void run() { 1484 UserRestrictionsUtils.applyUserRestrictions( 1485 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1486 1487 final UserRestrictionsListener[] listeners; 1488 synchronized (mUserRestrictionsListeners) { 1489 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1490 mUserRestrictionsListeners.toArray(listeners); 1491 } 1492 for (int i = 0; i < listeners.length; i++) { 1493 listeners[i].onUserRestrictionsChanged(userId, 1494 newRestrictionsFinal, prevRestrictionsFinal); 1495 } 1496 } 1497 }); 1498 } 1499 1500 // Package private for the inner class. 1501 void applyUserRestrictionsLR(int userId) { 1502 updateUserRestrictionsInternalLR(null, userId); 1503 } 1504 1505 @GuardedBy("mRestrictionsLock") 1506 // Package private for the inner class. 1507 void applyUserRestrictionsForAllUsersLR() { 1508 if (DBG) { 1509 debug("applyUserRestrictionsForAllUsersLR"); 1510 } 1511 // First, invalidate all cached values. 1512 mCachedEffectiveUserRestrictions.clear(); 1513 1514 // We don't want to call into ActivityManagerService while taking a lock, so we'll call 1515 // it on a handler. 1516 final Runnable r = new Runnable() { 1517 @Override 1518 public void run() { 1519 // Then get the list of running users. 1520 final int[] runningUsers; 1521 try { 1522 runningUsers = ActivityManager.getService().getRunningUserIds(); 1523 } catch (RemoteException e) { 1524 Log.w(LOG_TAG, "Unable to access ActivityManagerService"); 1525 return; 1526 } 1527 // Then re-calculate the effective restrictions and apply, only for running users. 1528 // It's okay if a new user has started after the getRunningUserIds() call, 1529 // because we'll do the same thing (re-calculate the restrictions and apply) 1530 // when we start a user. 1531 synchronized (mRestrictionsLock) { 1532 for (int i = 0; i < runningUsers.length; i++) { 1533 applyUserRestrictionsLR(runningUsers[i]); 1534 } 1535 } 1536 } 1537 }; 1538 mHandler.post(r); 1539 } 1540 1541 /** 1542 * Check if we've hit the limit of how many users can be created. 1543 */ 1544 private boolean isUserLimitReached() { 1545 int count; 1546 synchronized (mUsersLock) { 1547 count = getAliveUsersExcludingGuestsCountLU(); 1548 } 1549 return count >= UserManager.getMaxSupportedUsers(); 1550 } 1551 1552 @Override 1553 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1554 checkManageUsersPermission("check if more managed profiles can be added."); 1555 if (ActivityManager.isLowRamDeviceStatic()) { 1556 return false; 1557 } 1558 if (!mContext.getPackageManager().hasSystemFeature( 1559 PackageManager.FEATURE_MANAGED_USERS)) { 1560 return false; 1561 } 1562 // Limit number of managed profiles that can be created 1563 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1564 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1565 if (managedProfilesCount - profilesRemovedCount >= getMaxManagedProfiles()) { 1566 return false; 1567 } 1568 synchronized(mUsersLock) { 1569 UserInfo userInfo = getUserInfoLU(userId); 1570 if (!userInfo.canHaveProfile()) { 1571 return false; 1572 } 1573 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1574 - profilesRemovedCount; 1575 // We allow creating a managed profile in the special case where there is only one user. 1576 return usersCountAfterRemoving == 1 1577 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1578 } 1579 } 1580 1581 private int getAliveUsersExcludingGuestsCountLU() { 1582 int aliveUserCount = 0; 1583 final int totalUserCount = mUsers.size(); 1584 // Skip over users being removed 1585 for (int i = 0; i < totalUserCount; i++) { 1586 UserInfo user = mUsers.valueAt(i).info; 1587 if (!mRemovingUserIds.get(user.id) && !user.isGuest()) { 1588 aliveUserCount++; 1589 } 1590 } 1591 return aliveUserCount; 1592 } 1593 1594 /** 1595 * Enforces that only the system UID or root's UID or apps that have the 1596 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1597 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1598 * permissions can make certain calls to the UserManager. 1599 * 1600 * @param message used as message if SecurityException is thrown 1601 * @throws SecurityException if the caller does not have enough privilege. 1602 */ 1603 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1604 final int uid = Binder.getCallingUid(); 1605 if (uid != Process.SYSTEM_UID && uid != 0 1606 && ActivityManager.checkComponentPermission( 1607 Manifest.permission.MANAGE_USERS, 1608 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1609 && ActivityManager.checkComponentPermission( 1610 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1611 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1612 throw new SecurityException( 1613 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1614 + message); 1615 } 1616 } 1617 1618 /** 1619 * Enforces that only the system UID or root's UID or apps that have the 1620 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1621 * permission can make certain calls to the UserManager. 1622 * 1623 * @param message used as message if SecurityException is thrown 1624 * @throws SecurityException if the caller is not system or root 1625 * @see #hasManageUsersPermission() 1626 */ 1627 private static final void checkManageUsersPermission(String message) { 1628 if (!hasManageUsersPermission()) { 1629 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1630 } 1631 } 1632 1633 /** 1634 * Enforces that only the system UID or root's UID or apps that have the 1635 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} or 1636 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS} 1637 * can make certain calls to the UserManager. 1638 * 1639 * @param message used as message if SecurityException is thrown 1640 * @throws SecurityException if the caller is not system or root 1641 * @see #hasManageOrCreateUsersPermission() 1642 */ 1643 private static final void checkManageOrCreateUsersPermission(String message) { 1644 if (!hasManageOrCreateUsersPermission()) { 1645 throw new SecurityException( 1646 "You either need MANAGE_USERS or CREATE_USERS permission to: " + message); 1647 } 1648 } 1649 1650 /** 1651 * Similar to {@link #checkManageOrCreateUsersPermission(String)} but when the caller is tries 1652 * to create user/profiles other than what is allowed for 1653 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS} permission, then it will only 1654 * allow callers with {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} permission. 1655 */ 1656 private static final void checkManageOrCreateUsersPermission(int creationFlags) { 1657 if ((creationFlags & ~ALLOWED_FLAGS_FOR_CREATE_USERS_PERMISSION) == 0) { 1658 if (!hasManageOrCreateUsersPermission()) { 1659 throw new SecurityException("You either need MANAGE_USERS or CREATE_USERS " 1660 + "permission to create an user with flags: " + creationFlags); 1661 } 1662 } else if (!hasManageUsersPermission()) { 1663 throw new SecurityException("You need MANAGE_USERS permission to create an user " 1664 + " with flags: " + creationFlags); 1665 } 1666 } 1667 1668 /** 1669 * @return whether the calling UID is system UID or root's UID or the calling app has the 1670 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS}. 1671 */ 1672 private static final boolean hasManageUsersPermission() { 1673 final int callingUid = Binder.getCallingUid(); 1674 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1675 || callingUid == Process.ROOT_UID 1676 || ActivityManager.checkComponentPermission( 1677 android.Manifest.permission.MANAGE_USERS, 1678 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1679 } 1680 1681 /** 1682 * @return whether the calling UID is system UID or root's UID or the calling app has the 1683 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} or 1684 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS}. 1685 */ 1686 private static final boolean hasManageOrCreateUsersPermission() { 1687 final int callingUid = Binder.getCallingUid(); 1688 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1689 || callingUid == Process.ROOT_UID 1690 || ActivityManager.checkComponentPermission( 1691 android.Manifest.permission.MANAGE_USERS, 1692 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED 1693 || ActivityManager.checkComponentPermission( 1694 android.Manifest.permission.CREATE_USERS, 1695 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1696 } 1697 1698 /** 1699 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1700 * UserManager. 1701 * 1702 * @param message used as message if SecurityException is thrown 1703 * @throws SecurityException if the caller is not system or root 1704 */ 1705 private static void checkSystemOrRoot(String message) { 1706 final int uid = Binder.getCallingUid(); 1707 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1708 throw new SecurityException("Only system may: " + message); 1709 } 1710 } 1711 1712 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1713 try { 1714 File dir = new File(mUsersDir, Integer.toString(info.id)); 1715 File file = new File(dir, USER_PHOTO_FILENAME); 1716 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1717 if (!dir.exists()) { 1718 dir.mkdir(); 1719 FileUtils.setPermissions( 1720 dir.getPath(), 1721 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1722 -1, -1); 1723 } 1724 FileOutputStream os; 1725 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1726 && tmp.renameTo(file) && SELinux.restorecon(file)) { 1727 info.iconPath = file.getAbsolutePath(); 1728 } 1729 try { 1730 os.close(); 1731 } catch (IOException ioe) { 1732 // What the ... ! 1733 } 1734 tmp.delete(); 1735 } catch (FileNotFoundException e) { 1736 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1737 } 1738 } 1739 1740 /** 1741 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1742 * cache it elsewhere. 1743 * @return the array of user ids. 1744 */ 1745 public int[] getUserIds() { 1746 synchronized (mUsersLock) { 1747 return mUserIds; 1748 } 1749 } 1750 1751 private void readUserListLP() { 1752 if (!mUserListFile.exists()) { 1753 fallbackToSingleUserLP(); 1754 return; 1755 } 1756 FileInputStream fis = null; 1757 AtomicFile userListFile = new AtomicFile(mUserListFile); 1758 try { 1759 fis = userListFile.openRead(); 1760 XmlPullParser parser = Xml.newPullParser(); 1761 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1762 int type; 1763 while ((type = parser.next()) != XmlPullParser.START_TAG 1764 && type != XmlPullParser.END_DOCUMENT) { 1765 // Skip 1766 } 1767 1768 if (type != XmlPullParser.START_TAG) { 1769 Slog.e(LOG_TAG, "Unable to read user list"); 1770 fallbackToSingleUserLP(); 1771 return; 1772 } 1773 1774 mNextSerialNumber = -1; 1775 if (parser.getName().equals(TAG_USERS)) { 1776 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1777 if (lastSerialNumber != null) { 1778 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1779 } 1780 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1781 if (versionNumber != null) { 1782 mUserVersion = Integer.parseInt(versionNumber); 1783 } 1784 } 1785 1786 // Pre-O global user restriction were stored as a single bundle (as opposed to per-user 1787 // currently), take care of it in case of upgrade. 1788 Bundle oldDevicePolicyGlobalUserRestrictions = null; 1789 1790 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1791 if (type == XmlPullParser.START_TAG) { 1792 final String name = parser.getName(); 1793 if (name.equals(TAG_USER)) { 1794 String id = parser.getAttributeValue(null, ATTR_ID); 1795 1796 UserData userData = readUserLP(Integer.parseInt(id)); 1797 1798 if (userData != null) { 1799 synchronized (mUsersLock) { 1800 mUsers.put(userData.info.id, userData); 1801 if (mNextSerialNumber < 0 1802 || mNextSerialNumber <= userData.info.id) { 1803 mNextSerialNumber = userData.info.id + 1; 1804 } 1805 } 1806 } 1807 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1808 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1809 && type != XmlPullParser.END_TAG) { 1810 if (type == XmlPullParser.START_TAG) { 1811 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1812 synchronized (mGuestRestrictions) { 1813 mGuestRestrictions.putAll( 1814 UserRestrictionsUtils.readRestrictions(parser)); 1815 } 1816 } 1817 break; 1818 } 1819 } 1820 } else if (name.equals(TAG_DEVICE_OWNER_USER_ID) 1821 // Legacy name, should only be encountered when upgrading from pre-O. 1822 || name.equals(TAG_GLOBAL_RESTRICTION_OWNER_ID)) { 1823 String ownerUserId = parser.getAttributeValue(null, ATTR_ID); 1824 if (ownerUserId != null) { 1825 mDeviceOwnerUserId = Integer.parseInt(ownerUserId); 1826 } 1827 } else if (name.equals(TAG_DEVICE_POLICY_RESTRICTIONS)) { 1828 // Should only happen when upgrading from pre-O (version < 7). 1829 oldDevicePolicyGlobalUserRestrictions = 1830 UserRestrictionsUtils.readRestrictions(parser); 1831 } 1832 } 1833 } 1834 1835 updateUserIds(); 1836 upgradeIfNecessaryLP(oldDevicePolicyGlobalUserRestrictions); 1837 } catch (IOException | XmlPullParserException e) { 1838 fallbackToSingleUserLP(); 1839 } finally { 1840 IoUtils.closeQuietly(fis); 1841 } 1842 } 1843 1844 /** 1845 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1846 * @param oldGlobalUserRestrictions Pre-O global device policy restrictions. 1847 */ 1848 private void upgradeIfNecessaryLP(Bundle oldGlobalUserRestrictions) { 1849 final int originalVersion = mUserVersion; 1850 int userVersion = mUserVersion; 1851 if (userVersion < 1) { 1852 // Assign a proper name for the owner, if not initialized correctly before 1853 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1854 if ("Primary".equals(userData.info.name)) { 1855 userData.info.name = 1856 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1857 scheduleWriteUser(userData); 1858 } 1859 userVersion = 1; 1860 } 1861 1862 if (userVersion < 2) { 1863 // Owner should be marked as initialized 1864 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1865 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1866 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1867 scheduleWriteUser(userData); 1868 } 1869 userVersion = 2; 1870 } 1871 1872 1873 if (userVersion < 4) { 1874 userVersion = 4; 1875 } 1876 1877 if (userVersion < 5) { 1878 initDefaultGuestRestrictions(); 1879 userVersion = 5; 1880 } 1881 1882 if (userVersion < 6) { 1883 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1884 synchronized (mUsersLock) { 1885 for (int i = 0; i < mUsers.size(); i++) { 1886 UserData userData = mUsers.valueAt(i); 1887 // In non-split mode, only user 0 can have restricted profiles 1888 if (!splitSystemUser && userData.info.isRestricted() 1889 && (userData.info.restrictedProfileParentId 1890 == UserInfo.NO_PROFILE_GROUP_ID)) { 1891 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1892 scheduleWriteUser(userData); 1893 } 1894 } 1895 } 1896 userVersion = 6; 1897 } 1898 1899 if (userVersion < 7) { 1900 // Previously only one user could enforce global restrictions, now it is per-user. 1901 synchronized (mRestrictionsLock) { 1902 if (!UserRestrictionsUtils.isEmpty(oldGlobalUserRestrictions) 1903 && mDeviceOwnerUserId != UserHandle.USER_NULL) { 1904 mDevicePolicyGlobalUserRestrictions.put( 1905 mDeviceOwnerUserId, oldGlobalUserRestrictions); 1906 } 1907 // ENSURE_VERIFY_APPS is now enforced globally even if put by profile owner, so move 1908 // it from local to global bundle for all users who set it. 1909 UserRestrictionsUtils.moveRestriction(UserManager.ENSURE_VERIFY_APPS, 1910 mDevicePolicyLocalUserRestrictions, mDevicePolicyGlobalUserRestrictions 1911 ); 1912 } 1913 userVersion = 7; 1914 } 1915 1916 if (userVersion < USER_VERSION) { 1917 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1918 + USER_VERSION); 1919 } else { 1920 mUserVersion = userVersion; 1921 1922 if (originalVersion < mUserVersion) { 1923 writeUserListLP(); 1924 } 1925 } 1926 } 1927 1928 private void fallbackToSingleUserLP() { 1929 int flags = UserInfo.FLAG_INITIALIZED; 1930 // In split system user mode, the admin and primary flags are assigned to the first human 1931 // user. 1932 if (!UserManager.isSplitSystemUser()) { 1933 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1934 } 1935 // Create the system user 1936 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, null, null, flags); 1937 UserData userData = putUserInfo(system); 1938 mNextSerialNumber = MIN_USER_ID; 1939 mUserVersion = USER_VERSION; 1940 1941 Bundle restrictions = new Bundle(); 1942 try { 1943 final String[] defaultFirstUserRestrictions = mContext.getResources().getStringArray( 1944 com.android.internal.R.array.config_defaultFirstUserRestrictions); 1945 for (String userRestriction : defaultFirstUserRestrictions) { 1946 if (UserRestrictionsUtils.isValidRestriction(userRestriction)) { 1947 restrictions.putBoolean(userRestriction, true); 1948 } 1949 } 1950 } catch (Resources.NotFoundException e) { 1951 Log.e(LOG_TAG, "Couldn't find resource: config_defaultFirstUserRestrictions", e); 1952 } 1953 1954 if (!restrictions.isEmpty()) { 1955 synchronized (mRestrictionsLock) { 1956 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1957 } 1958 } 1959 1960 updateUserIds(); 1961 initDefaultGuestRestrictions(); 1962 1963 writeUserLP(userData); 1964 writeUserListLP(); 1965 } 1966 1967 private String getOwnerName() { 1968 return mContext.getResources().getString(com.android.internal.R.string.owner_name); 1969 } 1970 1971 private void scheduleWriteUser(UserData UserData) { 1972 if (DBG) { 1973 debug("scheduleWriteUser"); 1974 } 1975 // No need to wrap it within a lock -- worst case, we'll just post the same message 1976 // twice. 1977 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1978 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1979 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1980 } 1981 } 1982 1983 private void writeUserLP(UserData userData) { 1984 if (DBG) { 1985 debug("writeUserLP " + userData); 1986 } 1987 FileOutputStream fos = null; 1988 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1989 try { 1990 fos = userFile.startWrite(); 1991 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1992 writeUserLP(userData, bos); 1993 userFile.finishWrite(fos); 1994 } catch (Exception ioe) { 1995 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id, ioe); 1996 userFile.failWrite(fos); 1997 } 1998 } 1999 2000 /* 2001 * Writes the user file in this format: 2002 * 2003 * <user flags="20039023" id="0"> 2004 * <name>Primary</name> 2005 * </user> 2006 */ 2007 @VisibleForTesting 2008 void writeUserLP(UserData userData, OutputStream os) 2009 throws IOException, XmlPullParserException { 2010 // XmlSerializer serializer = XmlUtils.serializerInstance(); 2011 final XmlSerializer serializer = new FastXmlSerializer(); 2012 serializer.setOutput(os, StandardCharsets.UTF_8.name()); 2013 serializer.startDocument(null, true); 2014 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2015 2016 final UserInfo userInfo = userData.info; 2017 serializer.startTag(null, TAG_USER); 2018 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 2019 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 2020 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 2021 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 2022 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 2023 Long.toString(userInfo.lastLoggedInTime)); 2024 if (userInfo.lastLoggedInFingerprint != null) { 2025 serializer.attribute(null, ATTR_LAST_LOGGED_IN_FINGERPRINT, 2026 userInfo.lastLoggedInFingerprint); 2027 } 2028 if (userInfo.iconPath != null) { 2029 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 2030 } 2031 if (userInfo.partial) { 2032 serializer.attribute(null, ATTR_PARTIAL, "true"); 2033 } 2034 if (userInfo.guestToRemove) { 2035 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 2036 } 2037 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 2038 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 2039 Integer.toString(userInfo.profileGroupId)); 2040 } 2041 serializer.attribute(null, ATTR_PROFILE_BADGE, 2042 Integer.toString(userInfo.profileBadge)); 2043 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 2044 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 2045 Integer.toString(userInfo.restrictedProfileParentId)); 2046 } 2047 // Write seed data 2048 if (userData.persistSeedData) { 2049 if (userData.seedAccountName != null) { 2050 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 2051 } 2052 if (userData.seedAccountType != null) { 2053 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 2054 } 2055 } 2056 if (userInfo.name != null) { 2057 serializer.startTag(null, TAG_NAME); 2058 serializer.text(userInfo.name); 2059 serializer.endTag(null, TAG_NAME); 2060 } 2061 synchronized (mRestrictionsLock) { 2062 UserRestrictionsUtils.writeRestrictions(serializer, 2063 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 2064 UserRestrictionsUtils.writeRestrictions(serializer, 2065 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 2066 TAG_DEVICE_POLICY_RESTRICTIONS); 2067 UserRestrictionsUtils.writeRestrictions(serializer, 2068 mDevicePolicyGlobalUserRestrictions.get(userInfo.id), 2069 TAG_DEVICE_POLICY_GLOBAL_RESTRICTIONS); 2070 } 2071 2072 if (userData.account != null) { 2073 serializer.startTag(null, TAG_ACCOUNT); 2074 serializer.text(userData.account); 2075 serializer.endTag(null, TAG_ACCOUNT); 2076 } 2077 2078 if (userData.persistSeedData && userData.seedAccountOptions != null) { 2079 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 2080 userData.seedAccountOptions.saveToXml(serializer); 2081 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 2082 } 2083 2084 serializer.endTag(null, TAG_USER); 2085 2086 serializer.endDocument(); 2087 } 2088 2089 /* 2090 * Writes the user list file in this format: 2091 * 2092 * <users nextSerialNumber="3"> 2093 * <user id="0"></user> 2094 * <user id="2"></user> 2095 * </users> 2096 */ 2097 private void writeUserListLP() { 2098 if (DBG) { 2099 debug("writeUserList"); 2100 } 2101 FileOutputStream fos = null; 2102 AtomicFile userListFile = new AtomicFile(mUserListFile); 2103 try { 2104 fos = userListFile.startWrite(); 2105 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2106 2107 // XmlSerializer serializer = XmlUtils.serializerInstance(); 2108 final XmlSerializer serializer = new FastXmlSerializer(); 2109 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2110 serializer.startDocument(null, true); 2111 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2112 2113 serializer.startTag(null, TAG_USERS); 2114 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 2115 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 2116 2117 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 2118 synchronized (mGuestRestrictions) { 2119 UserRestrictionsUtils 2120 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 2121 } 2122 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 2123 serializer.startTag(null, TAG_DEVICE_OWNER_USER_ID); 2124 serializer.attribute(null, ATTR_ID, Integer.toString(mDeviceOwnerUserId)); 2125 serializer.endTag(null, TAG_DEVICE_OWNER_USER_ID); 2126 int[] userIdsToWrite; 2127 synchronized (mUsersLock) { 2128 userIdsToWrite = new int[mUsers.size()]; 2129 for (int i = 0; i < userIdsToWrite.length; i++) { 2130 UserInfo user = mUsers.valueAt(i).info; 2131 userIdsToWrite[i] = user.id; 2132 } 2133 } 2134 for (int id : userIdsToWrite) { 2135 serializer.startTag(null, TAG_USER); 2136 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 2137 serializer.endTag(null, TAG_USER); 2138 } 2139 2140 serializer.endTag(null, TAG_USERS); 2141 2142 serializer.endDocument(); 2143 userListFile.finishWrite(fos); 2144 } catch (Exception e) { 2145 userListFile.failWrite(fos); 2146 Slog.e(LOG_TAG, "Error writing user list"); 2147 } 2148 } 2149 2150 private UserData readUserLP(int id) { 2151 FileInputStream fis = null; 2152 try { 2153 AtomicFile userFile = 2154 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 2155 fis = userFile.openRead(); 2156 return readUserLP(id, fis); 2157 } catch (IOException ioe) { 2158 Slog.e(LOG_TAG, "Error reading user list"); 2159 } catch (XmlPullParserException pe) { 2160 Slog.e(LOG_TAG, "Error reading user list"); 2161 } finally { 2162 IoUtils.closeQuietly(fis); 2163 } 2164 return null; 2165 } 2166 2167 @VisibleForTesting 2168 UserData readUserLP(int id, InputStream is) throws IOException, 2169 XmlPullParserException { 2170 int flags = 0; 2171 int serialNumber = id; 2172 String name = null; 2173 String account = null; 2174 String iconPath = null; 2175 long creationTime = 0L; 2176 long lastLoggedInTime = 0L; 2177 String lastLoggedInFingerprint = null; 2178 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 2179 int profileBadge = 0; 2180 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 2181 boolean partial = false; 2182 boolean guestToRemove = false; 2183 boolean persistSeedData = false; 2184 String seedAccountName = null; 2185 String seedAccountType = null; 2186 PersistableBundle seedAccountOptions = null; 2187 Bundle baseRestrictions = null; 2188 Bundle localRestrictions = null; 2189 Bundle globalRestrictions = null; 2190 2191 XmlPullParser parser = Xml.newPullParser(); 2192 parser.setInput(is, StandardCharsets.UTF_8.name()); 2193 int type; 2194 while ((type = parser.next()) != XmlPullParser.START_TAG 2195 && type != XmlPullParser.END_DOCUMENT) { 2196 // Skip 2197 } 2198 2199 if (type != XmlPullParser.START_TAG) { 2200 Slog.e(LOG_TAG, "Unable to read user " + id); 2201 return null; 2202 } 2203 2204 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 2205 int storedId = readIntAttribute(parser, ATTR_ID, -1); 2206 if (storedId != id) { 2207 Slog.e(LOG_TAG, "User id does not match the file name"); 2208 return null; 2209 } 2210 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 2211 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 2212 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 2213 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 2214 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 2215 lastLoggedInFingerprint = parser.getAttributeValue(null, 2216 ATTR_LAST_LOGGED_IN_FINGERPRINT); 2217 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 2218 UserInfo.NO_PROFILE_GROUP_ID); 2219 profileBadge = readIntAttribute(parser, ATTR_PROFILE_BADGE, 0); 2220 restrictedProfileParentId = readIntAttribute(parser, 2221 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 2222 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 2223 if ("true".equals(valueString)) { 2224 partial = true; 2225 } 2226 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 2227 if ("true".equals(valueString)) { 2228 guestToRemove = true; 2229 } 2230 2231 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 2232 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 2233 if (seedAccountName != null || seedAccountType != null) { 2234 persistSeedData = true; 2235 } 2236 2237 int outerDepth = parser.getDepth(); 2238 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 2239 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2240 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2241 continue; 2242 } 2243 String tag = parser.getName(); 2244 if (TAG_NAME.equals(tag)) { 2245 type = parser.next(); 2246 if (type == XmlPullParser.TEXT) { 2247 name = parser.getText(); 2248 } 2249 } else if (TAG_RESTRICTIONS.equals(tag)) { 2250 baseRestrictions = UserRestrictionsUtils.readRestrictions(parser); 2251 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 2252 localRestrictions = UserRestrictionsUtils.readRestrictions(parser); 2253 } else if (TAG_DEVICE_POLICY_GLOBAL_RESTRICTIONS.equals(tag)) { 2254 globalRestrictions = UserRestrictionsUtils.readRestrictions(parser); 2255 } else if (TAG_ACCOUNT.equals(tag)) { 2256 type = parser.next(); 2257 if (type == XmlPullParser.TEXT) { 2258 account = parser.getText(); 2259 } 2260 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 2261 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 2262 persistSeedData = true; 2263 } 2264 } 2265 } 2266 2267 // Create the UserInfo object that gets passed around 2268 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 2269 userInfo.serialNumber = serialNumber; 2270 userInfo.creationTime = creationTime; 2271 userInfo.lastLoggedInTime = lastLoggedInTime; 2272 userInfo.lastLoggedInFingerprint = lastLoggedInFingerprint; 2273 userInfo.partial = partial; 2274 userInfo.guestToRemove = guestToRemove; 2275 userInfo.profileGroupId = profileGroupId; 2276 userInfo.profileBadge = profileBadge; 2277 userInfo.restrictedProfileParentId = restrictedProfileParentId; 2278 2279 // Create the UserData object that's internal to this class 2280 UserData userData = new UserData(); 2281 userData.info = userInfo; 2282 userData.account = account; 2283 userData.seedAccountName = seedAccountName; 2284 userData.seedAccountType = seedAccountType; 2285 userData.persistSeedData = persistSeedData; 2286 userData.seedAccountOptions = seedAccountOptions; 2287 2288 synchronized (mRestrictionsLock) { 2289 if (baseRestrictions != null) { 2290 mBaseUserRestrictions.put(id, baseRestrictions); 2291 } 2292 if (localRestrictions != null) { 2293 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 2294 } 2295 if (globalRestrictions != null) { 2296 mDevicePolicyGlobalUserRestrictions.put(id, globalRestrictions); 2297 } 2298 } 2299 return userData; 2300 } 2301 2302 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 2303 String valueString = parser.getAttributeValue(null, attr); 2304 if (valueString == null) return defaultValue; 2305 try { 2306 return Integer.parseInt(valueString); 2307 } catch (NumberFormatException nfe) { 2308 return defaultValue; 2309 } 2310 } 2311 2312 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 2313 String valueString = parser.getAttributeValue(null, attr); 2314 if (valueString == null) return defaultValue; 2315 try { 2316 return Long.parseLong(valueString); 2317 } catch (NumberFormatException nfe) { 2318 return defaultValue; 2319 } 2320 } 2321 2322 /** 2323 * Removes the app restrictions file for a specific package and user id, if it exists. 2324 */ 2325 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 2326 synchronized (mPackagesLock) { 2327 File dir = Environment.getUserSystemDirectory(userId); 2328 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 2329 if (resFile.exists()) { 2330 resFile.delete(); 2331 } 2332 } 2333 } 2334 2335 @Override 2336 public UserInfo createProfileForUser(String name, int flags, int userId, 2337 String[] disallowedPackages) { 2338 checkManageOrCreateUsersPermission(flags); 2339 return createUserInternal(name, flags, userId, disallowedPackages); 2340 } 2341 2342 @Override 2343 public UserInfo createProfileForUserEvenWhenDisallowed(String name, int flags, int userId, 2344 String[] disallowedPackages) { 2345 checkManageOrCreateUsersPermission(flags); 2346 return createUserInternalUnchecked(name, flags, userId, disallowedPackages); 2347 } 2348 2349 @Override 2350 public UserInfo createUser(String name, int flags) { 2351 checkManageOrCreateUsersPermission(flags); 2352 return createUserInternal(name, flags, UserHandle.USER_NULL); 2353 } 2354 2355 private UserInfo createUserInternal(String name, int flags, int parentId) { 2356 return createUserInternal(name, flags, parentId, null); 2357 } 2358 2359 private UserInfo createUserInternal(String name, int flags, int parentId, 2360 String[] disallowedPackages) { 2361 String restriction = ((flags & UserInfo.FLAG_MANAGED_PROFILE) != 0) 2362 ? UserManager.DISALLOW_ADD_MANAGED_PROFILE 2363 : UserManager.DISALLOW_ADD_USER; 2364 if (hasUserRestriction(restriction, UserHandle.getCallingUserId())) { 2365 Log.w(LOG_TAG, "Cannot add user. " + restriction + " is enabled."); 2366 return null; 2367 } 2368 return createUserInternalUnchecked(name, flags, parentId, disallowedPackages); 2369 } 2370 2371 private UserInfo createUserInternalUnchecked(String name, int flags, int parentId, 2372 String[] disallowedPackages) { 2373 DeviceStorageMonitorInternal dsm = LocalServices 2374 .getService(DeviceStorageMonitorInternal.class); 2375 if (dsm.isMemoryLow()) { 2376 Log.w(LOG_TAG, "Cannot add user. Not enough space on disk."); 2377 return null; 2378 } 2379 if (ActivityManager.isLowRamDeviceStatic()) { 2380 return null; 2381 } 2382 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 2383 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 2384 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 2385 final boolean isDemo = (flags & UserInfo.FLAG_DEMO) != 0; 2386 final long ident = Binder.clearCallingIdentity(); 2387 UserInfo userInfo; 2388 UserData userData; 2389 final int userId; 2390 try { 2391 synchronized (mPackagesLock) { 2392 UserData parent = null; 2393 if (parentId != UserHandle.USER_NULL) { 2394 synchronized (mUsersLock) { 2395 parent = getUserDataLU(parentId); 2396 } 2397 if (parent == null) return null; 2398 } 2399 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 2400 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 2401 return null; 2402 } 2403 if (!isGuest && !isManagedProfile && !isDemo && isUserLimitReached()) { 2404 // If we're not adding a guest/demo user or a managed profile and the limit has 2405 // been reached, cannot add a user. 2406 return null; 2407 } 2408 // If we're adding a guest and there already exists one, bail. 2409 if (isGuest && findCurrentGuestUser() != null) { 2410 return null; 2411 } 2412 // In legacy mode, restricted profile's parent can only be the owner user 2413 if (isRestricted && !UserManager.isSplitSystemUser() 2414 && (parentId != UserHandle.USER_SYSTEM)) { 2415 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 2416 return null; 2417 } 2418 if (isRestricted && UserManager.isSplitSystemUser()) { 2419 if (parent == null) { 2420 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 2421 + "specified"); 2422 return null; 2423 } 2424 if (!parent.info.canHaveProfile()) { 2425 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 2426 + "created for the specified parent user id " + parentId); 2427 return null; 2428 } 2429 } 2430 if (!UserManager.isSplitSystemUser() && (flags & UserInfo.FLAG_EPHEMERAL) != 0 2431 && (flags & UserInfo.FLAG_DEMO) == 0) { 2432 Log.e(LOG_TAG, 2433 "Ephemeral users are supported on split-system-user systems only."); 2434 return null; 2435 } 2436 // In split system user mode, we assign the first human user the primary flag. 2437 // And if there is no device owner, we also assign the admin flag to primary user. 2438 if (UserManager.isSplitSystemUser() 2439 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 2440 flags |= UserInfo.FLAG_PRIMARY; 2441 synchronized (mUsersLock) { 2442 if (!mIsDeviceManaged) { 2443 flags |= UserInfo.FLAG_ADMIN; 2444 } 2445 } 2446 } 2447 2448 userId = getNextAvailableId(); 2449 Environment.getUserSystemDirectory(userId).mkdirs(); 2450 boolean ephemeralGuests = Resources.getSystem() 2451 .getBoolean(com.android.internal.R.bool.config_guestUserEphemeral); 2452 2453 synchronized (mUsersLock) { 2454 // Add ephemeral flag to guests/users if required. Also inherit it from parent. 2455 if ((isGuest && ephemeralGuests) || mForceEphemeralUsers 2456 || (parent != null && parent.info.isEphemeral())) { 2457 flags |= UserInfo.FLAG_EPHEMERAL; 2458 } 2459 2460 userInfo = new UserInfo(userId, name, null, flags); 2461 userInfo.serialNumber = mNextSerialNumber++; 2462 long now = System.currentTimeMillis(); 2463 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 2464 userInfo.partial = true; 2465 userInfo.lastLoggedInFingerprint = Build.FINGERPRINT; 2466 if (isManagedProfile && parentId != UserHandle.USER_NULL) { 2467 userInfo.profileBadge = getFreeProfileBadgeLU(parentId); 2468 } 2469 userData = new UserData(); 2470 userData.info = userInfo; 2471 mUsers.put(userId, userData); 2472 } 2473 writeUserLP(userData); 2474 writeUserListLP(); 2475 if (parent != null) { 2476 if (isManagedProfile) { 2477 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 2478 parent.info.profileGroupId = parent.info.id; 2479 writeUserLP(parent); 2480 } 2481 userInfo.profileGroupId = parent.info.profileGroupId; 2482 } else if (isRestricted) { 2483 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 2484 parent.info.restrictedProfileParentId = parent.info.id; 2485 writeUserLP(parent); 2486 } 2487 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 2488 } 2489 } 2490 } 2491 final StorageManager storage = mContext.getSystemService(StorageManager.class); 2492 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 2493 mPm.prepareUserData(userId, userInfo.serialNumber, 2494 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 2495 mPm.createNewUser(userId, disallowedPackages); 2496 userInfo.partial = false; 2497 synchronized (mPackagesLock) { 2498 writeUserLP(userData); 2499 } 2500 updateUserIds(); 2501 Bundle restrictions = new Bundle(); 2502 if (isGuest) { 2503 synchronized (mGuestRestrictions) { 2504 restrictions.putAll(mGuestRestrictions); 2505 } 2506 } 2507 synchronized (mRestrictionsLock) { 2508 mBaseUserRestrictions.append(userId, restrictions); 2509 } 2510 mPm.onNewUserCreated(userId); 2511 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 2512 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 2513 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 2514 android.Manifest.permission.MANAGE_USERS); 2515 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 2516 } finally { 2517 Binder.restoreCallingIdentity(ident); 2518 } 2519 return userInfo; 2520 } 2521 2522 @VisibleForTesting 2523 UserData putUserInfo(UserInfo userInfo) { 2524 final UserData userData = new UserData(); 2525 userData.info = userInfo; 2526 synchronized (mUsers) { 2527 mUsers.put(userInfo.id, userData); 2528 } 2529 return userData; 2530 } 2531 2532 @VisibleForTesting 2533 void removeUserInfo(int userId) { 2534 synchronized (mUsers) { 2535 mUsers.remove(userId); 2536 } 2537 } 2538 2539 /** 2540 * @hide 2541 */ 2542 @Override 2543 public UserInfo createRestrictedProfile(String name, int parentUserId) { 2544 checkManageOrCreateUsersPermission("setupRestrictedProfile"); 2545 final UserInfo user = createProfileForUser( 2546 name, UserInfo.FLAG_RESTRICTED, parentUserId, null); 2547 if (user == null) { 2548 return null; 2549 } 2550 long identity = Binder.clearCallingIdentity(); 2551 try { 2552 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 2553 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 2554 // the putIntForUser() will fail. 2555 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 2556 android.provider.Settings.Secure.LOCATION_MODE, 2557 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 2558 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 2559 } finally { 2560 Binder.restoreCallingIdentity(identity); 2561 } 2562 return user; 2563 } 2564 2565 /** 2566 * Find the current guest user. If the Guest user is partial, 2567 * then do not include it in the results as it is about to die. 2568 */ 2569 private UserInfo findCurrentGuestUser() { 2570 synchronized (mUsersLock) { 2571 final int size = mUsers.size(); 2572 for (int i = 0; i < size; i++) { 2573 final UserInfo user = mUsers.valueAt(i).info; 2574 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 2575 return user; 2576 } 2577 } 2578 } 2579 return null; 2580 } 2581 2582 /** 2583 * Mark this guest user for deletion to allow us to create another guest 2584 * and switch to that user before actually removing this guest. 2585 * @param userHandle the userid of the current guest 2586 * @return whether the user could be marked for deletion 2587 */ 2588 @Override 2589 public boolean markGuestForDeletion(int userHandle) { 2590 checkManageUsersPermission("Only the system can remove users"); 2591 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2592 UserManager.DISALLOW_REMOVE_USER, false)) { 2593 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2594 return false; 2595 } 2596 2597 long ident = Binder.clearCallingIdentity(); 2598 try { 2599 final UserData userData; 2600 synchronized (mPackagesLock) { 2601 synchronized (mUsersLock) { 2602 userData = mUsers.get(userHandle); 2603 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2604 return false; 2605 } 2606 } 2607 if (!userData.info.isGuest()) { 2608 return false; 2609 } 2610 // We set this to a guest user that is to be removed. This is a temporary state 2611 // where we are allowed to add new Guest users, even if this one is still not 2612 // removed. This user will still show up in getUserInfo() calls. 2613 // If we don't get around to removing this Guest user, it will be purged on next 2614 // startup. 2615 userData.info.guestToRemove = true; 2616 // Mark it as disabled, so that it isn't returned any more when 2617 // profiles are queried. 2618 userData.info.flags |= UserInfo.FLAG_DISABLED; 2619 writeUserLP(userData); 2620 } 2621 } finally { 2622 Binder.restoreCallingIdentity(ident); 2623 } 2624 return true; 2625 } 2626 2627 /** 2628 * Removes a user and all data directories created for that user. This method should be called 2629 * after the user's processes have been terminated. 2630 * @param userHandle the user's id 2631 */ 2632 @Override 2633 public boolean removeUser(int userHandle) { 2634 Slog.i(LOG_TAG, "removeUser u" + userHandle); 2635 checkManageOrCreateUsersPermission("Only the system can remove users"); 2636 2637 final boolean isManagedProfile; 2638 synchronized (mUsersLock) { 2639 UserInfo userInfo = getUserInfoLU(userHandle); 2640 isManagedProfile = userInfo != null && userInfo.isManagedProfile(); 2641 } 2642 String restriction = isManagedProfile 2643 ? UserManager.DISALLOW_REMOVE_MANAGED_PROFILE : UserManager.DISALLOW_REMOVE_USER; 2644 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean(restriction, false)) { 2645 Log.w(LOG_TAG, "Cannot remove user. " + restriction + " is enabled."); 2646 return false; 2647 } 2648 return removeUserUnchecked(userHandle); 2649 } 2650 2651 private boolean removeUserUnchecked(int userHandle) { 2652 long ident = Binder.clearCallingIdentity(); 2653 try { 2654 final UserData userData; 2655 int currentUser = ActivityManager.getCurrentUser(); 2656 if (currentUser == userHandle) { 2657 Log.w(LOG_TAG, "Current user cannot be removed"); 2658 return false; 2659 } 2660 synchronized (mPackagesLock) { 2661 synchronized (mUsersLock) { 2662 userData = mUsers.get(userHandle); 2663 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2664 return false; 2665 } 2666 2667 addRemovingUserIdLocked(userHandle); 2668 } 2669 2670 try { 2671 mAppOpsService.removeUser(userHandle); 2672 } catch (RemoteException e) { 2673 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2674 } 2675 // Set this to a partially created user, so that the user will be purged 2676 // on next startup, in case the runtime stops now before stopping and 2677 // removing the user completely. 2678 userData.info.partial = true; 2679 // Mark it as disabled, so that it isn't returned any more when 2680 // profiles are queried. 2681 userData.info.flags |= UserInfo.FLAG_DISABLED; 2682 writeUserLP(userData); 2683 } 2684 2685 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2686 && userData.info.isManagedProfile()) { 2687 // Send broadcast to notify system that the user removed was a 2688 // managed user. 2689 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2690 } 2691 2692 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2693 int res; 2694 try { 2695 res = ActivityManager.getService().stopUser(userHandle, /* force= */ true, 2696 new IStopUserCallback.Stub() { 2697 @Override 2698 public void userStopped(int userId) { 2699 finishRemoveUser(userId); 2700 } 2701 @Override 2702 public void userStopAborted(int userId) { 2703 } 2704 }); 2705 } catch (RemoteException e) { 2706 return false; 2707 } 2708 return res == ActivityManager.USER_OP_SUCCESS; 2709 } finally { 2710 Binder.restoreCallingIdentity(ident); 2711 } 2712 } 2713 2714 @VisibleForTesting 2715 void addRemovingUserIdLocked(int userId) { 2716 // We remember deleted user IDs to prevent them from being 2717 // reused during the current boot; they can still be reused 2718 // after a reboot or recycling of userIds. 2719 mRemovingUserIds.put(userId, true); 2720 mRecentlyRemovedIds.add(userId); 2721 // Keep LRU queue of recently removed IDs for recycling 2722 if (mRecentlyRemovedIds.size() > MAX_RECENTLY_REMOVED_IDS_SIZE) { 2723 mRecentlyRemovedIds.removeFirst(); 2724 } 2725 } 2726 2727 void finishRemoveUser(final int userHandle) { 2728 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2729 // Let other services shutdown any activity and clean up their state before completely 2730 // wiping the user's system directory and removing from the user list 2731 long ident = Binder.clearCallingIdentity(); 2732 try { 2733 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2734 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2735 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2736 android.Manifest.permission.MANAGE_USERS, 2737 2738 new BroadcastReceiver() { 2739 @Override 2740 public void onReceive(Context context, Intent intent) { 2741 if (DBG) { 2742 Slog.i(LOG_TAG, 2743 "USER_REMOVED broadcast sent, cleaning up user data " 2744 + userHandle); 2745 } 2746 new Thread() { 2747 @Override 2748 public void run() { 2749 // Clean up any ActivityManager state 2750 LocalServices.getService(ActivityManagerInternal.class) 2751 .onUserRemoved(userHandle); 2752 removeUserState(userHandle); 2753 } 2754 }.start(); 2755 } 2756 }, 2757 2758 null, Activity.RESULT_OK, null, null); 2759 } finally { 2760 Binder.restoreCallingIdentity(ident); 2761 } 2762 } 2763 2764 private void removeUserState(final int userHandle) { 2765 try { 2766 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2767 } catch (IllegalStateException e) { 2768 // This may be simply because the user was partially created. 2769 Slog.i(LOG_TAG, 2770 "Destroying key for user " + userHandle + " failed, continuing anyway", e); 2771 } 2772 2773 // Cleanup gatekeeper secure user id 2774 try { 2775 final IGateKeeperService gk = GateKeeper.getService(); 2776 if (gk != null) { 2777 gk.clearSecureUserId(userHandle); 2778 } 2779 } catch (Exception ex) { 2780 Slog.w(LOG_TAG, "unable to clear GK secure user id"); 2781 } 2782 2783 // Cleanup package manager settings 2784 mPm.cleanUpUser(this, userHandle); 2785 2786 // Clean up all data before removing metadata 2787 mPm.destroyUserData(userHandle, 2788 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 2789 2790 // Remove this user from the list 2791 synchronized (mUsersLock) { 2792 mUsers.remove(userHandle); 2793 mIsUserManaged.delete(userHandle); 2794 } 2795 synchronized (mUserStates) { 2796 mUserStates.delete(userHandle); 2797 } 2798 synchronized (mRestrictionsLock) { 2799 mBaseUserRestrictions.remove(userHandle); 2800 mAppliedUserRestrictions.remove(userHandle); 2801 mCachedEffectiveUserRestrictions.remove(userHandle); 2802 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2803 if (mDevicePolicyGlobalUserRestrictions.get(userHandle) != null) { 2804 mDevicePolicyGlobalUserRestrictions.remove(userHandle); 2805 applyUserRestrictionsForAllUsersLR(); 2806 } 2807 } 2808 // Update the user list 2809 synchronized (mPackagesLock) { 2810 writeUserListLP(); 2811 } 2812 // Remove user file 2813 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2814 userFile.delete(); 2815 updateUserIds(); 2816 if (RELEASE_DELETED_USER_ID) { 2817 synchronized (mUsers) { 2818 mRemovingUserIds.delete(userHandle); 2819 } 2820 } 2821 } 2822 2823 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2824 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2825 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2826 Intent.FLAG_RECEIVER_FOREGROUND); 2827 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2828 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2829 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2830 } 2831 2832 @Override 2833 public Bundle getApplicationRestrictions(String packageName) { 2834 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2835 } 2836 2837 @Override 2838 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2839 if (UserHandle.getCallingUserId() != userId 2840 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2841 checkSystemOrRoot("get application restrictions for other user/app " + packageName); 2842 } 2843 synchronized (mPackagesLock) { 2844 // Read the restrictions from XML 2845 return readApplicationRestrictionsLP(packageName, userId); 2846 } 2847 } 2848 2849 @Override 2850 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2851 int userId) { 2852 checkSystemOrRoot("set application restrictions"); 2853 if (restrictions != null) { 2854 restrictions.setDefusable(true); 2855 } 2856 synchronized (mPackagesLock) { 2857 if (restrictions == null || restrictions.isEmpty()) { 2858 cleanAppRestrictionsForPackage(packageName, userId); 2859 } else { 2860 // Write the restrictions to XML 2861 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2862 } 2863 } 2864 2865 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2866 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2867 changeIntent.setPackage(packageName); 2868 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2869 mContext.sendBroadcastAsUser(changeIntent, UserHandle.of(userId)); 2870 } 2871 2872 private int getUidForPackage(String packageName) { 2873 long ident = Binder.clearCallingIdentity(); 2874 try { 2875 return mContext.getPackageManager().getApplicationInfo(packageName, 2876 PackageManager.MATCH_ANY_USER).uid; 2877 } catch (NameNotFoundException nnfe) { 2878 return -1; 2879 } finally { 2880 Binder.restoreCallingIdentity(ident); 2881 } 2882 } 2883 2884 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2885 AtomicFile restrictionsFile = 2886 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2887 packageToRestrictionsFileName(packageName))); 2888 return readApplicationRestrictionsLP(restrictionsFile); 2889 } 2890 2891 @VisibleForTesting 2892 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2893 final Bundle restrictions = new Bundle(); 2894 final ArrayList<String> values = new ArrayList<>(); 2895 if (!restrictionsFile.getBaseFile().exists()) { 2896 return restrictions; 2897 } 2898 2899 FileInputStream fis = null; 2900 try { 2901 fis = restrictionsFile.openRead(); 2902 XmlPullParser parser = Xml.newPullParser(); 2903 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2904 XmlUtils.nextElement(parser); 2905 if (parser.getEventType() != XmlPullParser.START_TAG) { 2906 Slog.e(LOG_TAG, "Unable to read restrictions file " 2907 + restrictionsFile.getBaseFile()); 2908 return restrictions; 2909 } 2910 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2911 readEntry(restrictions, values, parser); 2912 } 2913 } catch (IOException|XmlPullParserException e) { 2914 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2915 } finally { 2916 IoUtils.closeQuietly(fis); 2917 } 2918 return restrictions; 2919 } 2920 2921 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2922 XmlPullParser parser) throws XmlPullParserException, IOException { 2923 int type = parser.getEventType(); 2924 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2925 String key = parser.getAttributeValue(null, ATTR_KEY); 2926 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2927 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2928 if (multiple != null) { 2929 values.clear(); 2930 int count = Integer.parseInt(multiple); 2931 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2932 if (type == XmlPullParser.START_TAG 2933 && parser.getName().equals(TAG_VALUE)) { 2934 values.add(parser.nextText().trim()); 2935 count--; 2936 } 2937 } 2938 String [] valueStrings = new String[values.size()]; 2939 values.toArray(valueStrings); 2940 restrictions.putStringArray(key, valueStrings); 2941 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2942 restrictions.putBundle(key, readBundleEntry(parser, values)); 2943 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2944 final int outerDepth = parser.getDepth(); 2945 ArrayList<Bundle> bundleList = new ArrayList<>(); 2946 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2947 Bundle childBundle = readBundleEntry(parser, values); 2948 bundleList.add(childBundle); 2949 } 2950 restrictions.putParcelableArray(key, 2951 bundleList.toArray(new Bundle[bundleList.size()])); 2952 } else { 2953 String value = parser.nextText().trim(); 2954 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2955 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2956 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2957 restrictions.putInt(key, Integer.parseInt(value)); 2958 } else { 2959 restrictions.putString(key, value); 2960 } 2961 } 2962 } 2963 } 2964 2965 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2966 throws IOException, XmlPullParserException { 2967 Bundle childBundle = new Bundle(); 2968 final int outerDepth = parser.getDepth(); 2969 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2970 readEntry(childBundle, values, parser); 2971 } 2972 return childBundle; 2973 } 2974 2975 private void writeApplicationRestrictionsLP(String packageName, 2976 Bundle restrictions, int userId) { 2977 AtomicFile restrictionsFile = new AtomicFile( 2978 new File(Environment.getUserSystemDirectory(userId), 2979 packageToRestrictionsFileName(packageName))); 2980 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2981 } 2982 2983 @VisibleForTesting 2984 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2985 FileOutputStream fos = null; 2986 try { 2987 fos = restrictionsFile.startWrite(); 2988 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2989 2990 final XmlSerializer serializer = new FastXmlSerializer(); 2991 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2992 serializer.startDocument(null, true); 2993 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2994 2995 serializer.startTag(null, TAG_RESTRICTIONS); 2996 writeBundle(restrictions, serializer); 2997 serializer.endTag(null, TAG_RESTRICTIONS); 2998 2999 serializer.endDocument(); 3000 restrictionsFile.finishWrite(fos); 3001 } catch (Exception e) { 3002 restrictionsFile.failWrite(fos); 3003 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 3004 } 3005 } 3006 3007 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 3008 throws IOException { 3009 for (String key : restrictions.keySet()) { 3010 Object value = restrictions.get(key); 3011 serializer.startTag(null, TAG_ENTRY); 3012 serializer.attribute(null, ATTR_KEY, key); 3013 3014 if (value instanceof Boolean) { 3015 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 3016 serializer.text(value.toString()); 3017 } else if (value instanceof Integer) { 3018 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 3019 serializer.text(value.toString()); 3020 } else if (value == null || value instanceof String) { 3021 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 3022 serializer.text(value != null ? (String) value : ""); 3023 } else if (value instanceof Bundle) { 3024 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 3025 writeBundle((Bundle) value, serializer); 3026 } else if (value instanceof Parcelable[]) { 3027 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 3028 Parcelable[] array = (Parcelable[]) value; 3029 for (Parcelable parcelable : array) { 3030 if (!(parcelable instanceof Bundle)) { 3031 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 3032 } 3033 serializer.startTag(null, TAG_ENTRY); 3034 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 3035 writeBundle((Bundle) parcelable, serializer); 3036 serializer.endTag(null, TAG_ENTRY); 3037 } 3038 } else { 3039 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 3040 String[] values = (String[]) value; 3041 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 3042 for (String choice : values) { 3043 serializer.startTag(null, TAG_VALUE); 3044 serializer.text(choice != null ? choice : ""); 3045 serializer.endTag(null, TAG_VALUE); 3046 } 3047 } 3048 serializer.endTag(null, TAG_ENTRY); 3049 } 3050 } 3051 3052 @Override 3053 public int getUserSerialNumber(int userHandle) { 3054 synchronized (mUsersLock) { 3055 if (!exists(userHandle)) return -1; 3056 return getUserInfoLU(userHandle).serialNumber; 3057 } 3058 } 3059 3060 @Override 3061 public int getUserHandle(int userSerialNumber) { 3062 synchronized (mUsersLock) { 3063 for (int userId : mUserIds) { 3064 UserInfo info = getUserInfoLU(userId); 3065 if (info != null && info.serialNumber == userSerialNumber) return userId; 3066 } 3067 // Not found 3068 return -1; 3069 } 3070 } 3071 3072 @Override 3073 public long getUserCreationTime(int userHandle) { 3074 int callingUserId = UserHandle.getCallingUserId(); 3075 UserInfo userInfo = null; 3076 synchronized (mUsersLock) { 3077 if (callingUserId == userHandle) { 3078 userInfo = getUserInfoLU(userHandle); 3079 } else { 3080 UserInfo parent = getProfileParentLU(userHandle); 3081 if (parent != null && parent.id == callingUserId) { 3082 userInfo = getUserInfoLU(userHandle); 3083 } 3084 } 3085 } 3086 if (userInfo == null) { 3087 throw new SecurityException("userHandle can only be the calling user or a managed " 3088 + "profile associated with this user"); 3089 } 3090 return userInfo.creationTime; 3091 } 3092 3093 /** 3094 * Caches the list of user ids in an array, adjusting the array size when necessary. 3095 */ 3096 private void updateUserIds() { 3097 int num = 0; 3098 synchronized (mUsersLock) { 3099 final int userSize = mUsers.size(); 3100 for (int i = 0; i < userSize; i++) { 3101 if (!mUsers.valueAt(i).info.partial) { 3102 num++; 3103 } 3104 } 3105 final int[] newUsers = new int[num]; 3106 int n = 0; 3107 for (int i = 0; i < userSize; i++) { 3108 if (!mUsers.valueAt(i).info.partial) { 3109 newUsers[n++] = mUsers.keyAt(i); 3110 } 3111 } 3112 mUserIds = newUsers; 3113 } 3114 } 3115 3116 /** 3117 * Called right before a user is started. This gives us a chance to prepare 3118 * app storage and apply any user restrictions. 3119 */ 3120 public void onBeforeStartUser(int userId) { 3121 UserInfo userInfo = getUserInfo(userId); 3122 if (userInfo == null) { 3123 return; 3124 } 3125 final int userSerial = userInfo.serialNumber; 3126 // Migrate only if build fingerprints mismatch 3127 boolean migrateAppsData = !Build.FINGERPRINT.equals(userInfo.lastLoggedInFingerprint); 3128 mPm.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_DE); 3129 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_DE, migrateAppsData); 3130 3131 if (userId != UserHandle.USER_SYSTEM) { 3132 synchronized (mRestrictionsLock) { 3133 applyUserRestrictionsLR(userId); 3134 } 3135 } 3136 3137 maybeInitializeDemoMode(userId); 3138 } 3139 3140 /** 3141 * Called right before a user is unlocked. This gives us a chance to prepare 3142 * app storage. 3143 */ 3144 public void onBeforeUnlockUser(@UserIdInt int userId) { 3145 UserInfo userInfo = getUserInfo(userId); 3146 if (userInfo == null) { 3147 return; 3148 } 3149 final int userSerial = userInfo.serialNumber; 3150 // Migrate only if build fingerprints mismatch 3151 boolean migrateAppsData = !Build.FINGERPRINT.equals(userInfo.lastLoggedInFingerprint); 3152 mPm.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_CE); 3153 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_CE, migrateAppsData); 3154 } 3155 3156 /** 3157 * Make a note of the last started time of a user and do some cleanup. 3158 * This is called with ActivityManagerService lock held. 3159 * @param userId the user that was just foregrounded 3160 */ 3161 public void onUserLoggedIn(@UserIdInt int userId) { 3162 UserData userData = getUserDataNoChecks(userId); 3163 if (userData == null || userData.info.partial) { 3164 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 3165 return; 3166 } 3167 3168 final long now = System.currentTimeMillis(); 3169 if (now > EPOCH_PLUS_30_YEARS) { 3170 userData.info.lastLoggedInTime = now; 3171 } 3172 userData.info.lastLoggedInFingerprint = Build.FINGERPRINT; 3173 scheduleWriteUser(userData); 3174 } 3175 3176 private void maybeInitializeDemoMode(int userId) { 3177 if (UserManager.isDeviceInDemoMode(mContext) && userId != UserHandle.USER_SYSTEM) { 3178 String demoLauncher = 3179 mContext.getResources().getString( 3180 com.android.internal.R.string.config_demoModeLauncherComponent); 3181 if (!TextUtils.isEmpty(demoLauncher)) { 3182 ComponentName componentToEnable = ComponentName.unflattenFromString(demoLauncher); 3183 String demoLauncherPkg = componentToEnable.getPackageName(); 3184 try { 3185 final IPackageManager iPm = AppGlobals.getPackageManager(); 3186 iPm.setComponentEnabledSetting(componentToEnable, 3187 PackageManager.COMPONENT_ENABLED_STATE_ENABLED, /* flags= */ 0, 3188 /* userId= */ userId); 3189 iPm.setApplicationEnabledSetting(demoLauncherPkg, 3190 PackageManager.COMPONENT_ENABLED_STATE_ENABLED, /* flags= */ 0, 3191 /* userId= */ userId, null); 3192 } catch (RemoteException re) { 3193 // Internal, shouldn't happen 3194 } 3195 } 3196 } 3197 } 3198 3199 /** 3200 * Returns the next available user id, filling in any holes in the ids. 3201 */ 3202 @VisibleForTesting 3203 int getNextAvailableId() { 3204 int nextId; 3205 synchronized (mUsersLock) { 3206 nextId = scanNextAvailableIdLocked(); 3207 if (nextId >= 0) { 3208 return nextId; 3209 } 3210 // All ids up to MAX_USER_ID were used. Remove all mRemovingUserIds, 3211 // except most recently removed 3212 if (mRemovingUserIds.size() > 0) { 3213 Slog.i(LOG_TAG, "All available IDs are used. Recycling LRU ids."); 3214 mRemovingUserIds.clear(); 3215 for (Integer recentlyRemovedId : mRecentlyRemovedIds) { 3216 mRemovingUserIds.put(recentlyRemovedId, true); 3217 } 3218 nextId = scanNextAvailableIdLocked(); 3219 } 3220 } 3221 if (nextId < 0) { 3222 throw new IllegalStateException("No user id available!"); 3223 } 3224 return nextId; 3225 } 3226 3227 private int scanNextAvailableIdLocked() { 3228 for (int i = MIN_USER_ID; i < MAX_USER_ID; i++) { 3229 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 3230 return i; 3231 } 3232 } 3233 return -1; 3234 } 3235 3236 private String packageToRestrictionsFileName(String packageName) { 3237 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 3238 } 3239 3240 /** 3241 * Enforce that serial number stored in user directory inode matches the 3242 * given expected value. Gracefully sets the serial number if currently 3243 * undefined. 3244 * 3245 * @throws IOException when problem extracting serial number, or serial 3246 * number is mismatched. 3247 */ 3248 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 3249 if (StorageManager.isFileEncryptedEmulatedOnly()) { 3250 // When we're emulating FBE, the directory may have been chmod 3251 // 000'ed, meaning we can't read the serial number to enforce it; 3252 // instead of destroying the user, just log a warning. 3253 Slog.w(LOG_TAG, "Device is emulating FBE; assuming current serial number is valid"); 3254 return; 3255 } 3256 3257 final int foundSerial = getSerialNumber(file); 3258 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 3259 3260 if (foundSerial == -1) { 3261 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 3262 try { 3263 setSerialNumber(file, serialNumber); 3264 } catch (IOException e) { 3265 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 3266 } 3267 3268 } else if (foundSerial != serialNumber) { 3269 throw new IOException("Found serial number " + foundSerial 3270 + " doesn't match expected " + serialNumber); 3271 } 3272 } 3273 3274 /** 3275 * Set serial number stored in user directory inode. 3276 * 3277 * @throws IOException if serial number was already set 3278 */ 3279 private static void setSerialNumber(File file, int serialNumber) 3280 throws IOException { 3281 try { 3282 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 3283 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 3284 } catch (ErrnoException e) { 3285 throw e.rethrowAsIOException(); 3286 } 3287 } 3288 3289 /** 3290 * Return serial number stored in user directory inode. 3291 * 3292 * @return parsed serial number, or -1 if not set 3293 */ 3294 private static int getSerialNumber(File file) throws IOException { 3295 try { 3296 final byte[] buf = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL); 3297 final String serial = new String(buf); 3298 try { 3299 return Integer.parseInt(serial); 3300 } catch (NumberFormatException e) { 3301 throw new IOException("Bad serial number: " + serial); 3302 } 3303 } catch (ErrnoException e) { 3304 if (e.errno == OsConstants.ENODATA) { 3305 return -1; 3306 } else { 3307 throw e.rethrowAsIOException(); 3308 } 3309 } 3310 } 3311 3312 @Override 3313 public void setSeedAccountData(int userId, String accountName, String accountType, 3314 PersistableBundle accountOptions, boolean persist) { 3315 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 3316 synchronized (mPackagesLock) { 3317 final UserData userData; 3318 synchronized (mUsersLock) { 3319 userData = getUserDataLU(userId); 3320 if (userData == null) { 3321 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 3322 return; 3323 } 3324 userData.seedAccountName = accountName; 3325 userData.seedAccountType = accountType; 3326 userData.seedAccountOptions = accountOptions; 3327 userData.persistSeedData = persist; 3328 } 3329 if (persist) { 3330 writeUserLP(userData); 3331 } 3332 } 3333 } 3334 3335 @Override 3336 public String getSeedAccountName() throws RemoteException { 3337 checkManageUsersPermission("Cannot get seed account information"); 3338 synchronized (mUsersLock) { 3339 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3340 return userData.seedAccountName; 3341 } 3342 } 3343 3344 @Override 3345 public String getSeedAccountType() throws RemoteException { 3346 checkManageUsersPermission("Cannot get seed account information"); 3347 synchronized (mUsersLock) { 3348 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3349 return userData.seedAccountType; 3350 } 3351 } 3352 3353 @Override 3354 public PersistableBundle getSeedAccountOptions() throws RemoteException { 3355 checkManageUsersPermission("Cannot get seed account information"); 3356 synchronized (mUsersLock) { 3357 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3358 return userData.seedAccountOptions; 3359 } 3360 } 3361 3362 @Override 3363 public void clearSeedAccountData() throws RemoteException { 3364 checkManageUsersPermission("Cannot clear seed account information"); 3365 synchronized (mPackagesLock) { 3366 UserData userData; 3367 synchronized (mUsersLock) { 3368 userData = getUserDataLU(UserHandle.getCallingUserId()); 3369 if (userData == null) return; 3370 userData.clearSeedAccountData(); 3371 } 3372 writeUserLP(userData); 3373 } 3374 } 3375 3376 @Override 3377 public boolean someUserHasSeedAccount(String accountName, String accountType) 3378 throws RemoteException { 3379 checkManageUsersPermission("Cannot check seed account information"); 3380 synchronized (mUsersLock) { 3381 final int userSize = mUsers.size(); 3382 for (int i = 0; i < userSize; i++) { 3383 final UserData data = mUsers.valueAt(i); 3384 if (data.info.isInitialized()) continue; 3385 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 3386 continue; 3387 } 3388 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 3389 continue; 3390 } 3391 return true; 3392 } 3393 } 3394 return false; 3395 } 3396 3397 @Override 3398 public void onShellCommand(FileDescriptor in, FileDescriptor out, 3399 FileDescriptor err, String[] args, ShellCallback callback, 3400 ResultReceiver resultReceiver) { 3401 (new Shell()).exec(this, in, out, err, args, callback, resultReceiver); 3402 } 3403 3404 int onShellCommand(Shell shell, String cmd) { 3405 if (cmd == null) { 3406 return shell.handleDefaultCommands(cmd); 3407 } 3408 3409 final PrintWriter pw = shell.getOutPrintWriter(); 3410 try { 3411 switch(cmd) { 3412 case "list": 3413 return runList(pw); 3414 } 3415 } catch (RemoteException e) { 3416 pw.println("Remote exception: " + e); 3417 } 3418 return -1; 3419 } 3420 3421 private int runList(PrintWriter pw) throws RemoteException { 3422 final IActivityManager am = ActivityManager.getService(); 3423 final List<UserInfo> users = getUsers(false); 3424 if (users == null) { 3425 pw.println("Error: couldn't get users"); 3426 return 1; 3427 } else { 3428 pw.println("Users:"); 3429 for (int i = 0; i < users.size(); i++) { 3430 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 3431 pw.println("\t" + users.get(i).toString() + running); 3432 } 3433 return 0; 3434 } 3435 } 3436 3437 @Override 3438 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3439 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 3440 != PackageManager.PERMISSION_GRANTED) { 3441 pw.println("Permission Denial: can't dump UserManager from from pid=" 3442 + Binder.getCallingPid() 3443 + ", uid=" + Binder.getCallingUid() 3444 + " without permission " 3445 + android.Manifest.permission.DUMP); 3446 return; 3447 } 3448 3449 long now = System.currentTimeMillis(); 3450 StringBuilder sb = new StringBuilder(); 3451 synchronized (mPackagesLock) { 3452 synchronized (mUsersLock) { 3453 pw.println("Users:"); 3454 for (int i = 0; i < mUsers.size(); i++) { 3455 UserData userData = mUsers.valueAt(i); 3456 if (userData == null) { 3457 continue; 3458 } 3459 UserInfo userInfo = userData.info; 3460 final int userId = userInfo.id; 3461 pw.print(" "); pw.print(userInfo); 3462 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 3463 if (mRemovingUserIds.get(userId)) { 3464 pw.print(" <removing> "); 3465 } 3466 if (userInfo.partial) { 3467 pw.print(" <partial>"); 3468 } 3469 pw.println(); 3470 pw.print(" Created: "); 3471 if (userInfo.creationTime == 0) { 3472 pw.println("<unknown>"); 3473 } else { 3474 sb.setLength(0); 3475 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 3476 sb.append(" ago"); 3477 pw.println(sb); 3478 } 3479 pw.print(" Last logged in: "); 3480 if (userInfo.lastLoggedInTime == 0) { 3481 pw.println("<unknown>"); 3482 } else { 3483 sb.setLength(0); 3484 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 3485 sb.append(" ago"); 3486 pw.println(sb); 3487 } 3488 pw.print(" Last logged in fingerprint: "); 3489 pw.println(userInfo.lastLoggedInFingerprint); 3490 pw.print(" Has profile owner: "); 3491 pw.println(mIsUserManaged.get(userId)); 3492 pw.println(" Restrictions:"); 3493 synchronized (mRestrictionsLock) { 3494 UserRestrictionsUtils.dumpRestrictions( 3495 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 3496 pw.println(" Device policy global restrictions:"); 3497 UserRestrictionsUtils.dumpRestrictions( 3498 pw, " ", mDevicePolicyGlobalUserRestrictions.get(userInfo.id)); 3499 pw.println(" Device policy local restrictions:"); 3500 UserRestrictionsUtils.dumpRestrictions( 3501 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 3502 pw.println(" Effective restrictions:"); 3503 UserRestrictionsUtils.dumpRestrictions( 3504 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 3505 } 3506 3507 if (userData.account != null) { 3508 pw.print(" Account name: " + userData.account); 3509 pw.println(); 3510 } 3511 3512 if (userData.seedAccountName != null) { 3513 pw.print(" Seed account name: " + userData.seedAccountName); 3514 pw.println(); 3515 if (userData.seedAccountType != null) { 3516 pw.print(" account type: " + userData.seedAccountType); 3517 pw.println(); 3518 } 3519 if (userData.seedAccountOptions != null) { 3520 pw.print(" account options exist"); 3521 pw.println(); 3522 } 3523 } 3524 } 3525 } 3526 pw.println(); 3527 pw.println(" Device owner id:" + mDeviceOwnerUserId); 3528 pw.println(); 3529 pw.println(" Guest restrictions:"); 3530 synchronized (mGuestRestrictions) { 3531 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 3532 } 3533 synchronized (mUsersLock) { 3534 pw.println(); 3535 pw.println(" Device managed: " + mIsDeviceManaged); 3536 if (mRemovingUserIds.size() > 0) { 3537 pw.println(); 3538 pw.println(" Recently removed userIds: " + mRecentlyRemovedIds); 3539 } 3540 } 3541 synchronized (mUserStates) { 3542 pw.println(" Started users state: " + mUserStates); 3543 } 3544 // Dump some capabilities 3545 pw.println(); 3546 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 3547 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 3548 pw.println(" All guests ephemeral: " + Resources.getSystem().getBoolean( 3549 com.android.internal.R.bool.config_guestUserEphemeral)); 3550 } 3551 } 3552 3553 final class MainHandler extends Handler { 3554 3555 @Override 3556 public void handleMessage(Message msg) { 3557 switch (msg.what) { 3558 case WRITE_USER_MSG: 3559 removeMessages(WRITE_USER_MSG, msg.obj); 3560 synchronized (mPackagesLock) { 3561 int userId = ((UserData) msg.obj).info.id; 3562 UserData userData = getUserDataNoChecks(userId); 3563 if (userData != null) { 3564 writeUserLP(userData); 3565 } 3566 } 3567 } 3568 } 3569 } 3570 3571 /** 3572 * @param userId 3573 * @return whether the user has been initialized yet 3574 */ 3575 boolean isInitialized(int userId) { 3576 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 3577 } 3578 3579 private class LocalService extends UserManagerInternal { 3580 @Override 3581 public void setDevicePolicyUserRestrictions(int userId, @Nullable Bundle restrictions, 3582 boolean isDeviceOwner, int cameraRestrictionScope) { 3583 UserManagerService.this.setDevicePolicyUserRestrictionsInner(userId, restrictions, 3584 isDeviceOwner, cameraRestrictionScope); 3585 } 3586 3587 @Override 3588 public Bundle getBaseUserRestrictions(int userId) { 3589 synchronized (mRestrictionsLock) { 3590 return mBaseUserRestrictions.get(userId); 3591 } 3592 } 3593 3594 @Override 3595 public void setBaseUserRestrictionsByDpmsForMigration( 3596 int userId, Bundle baseRestrictions) { 3597 synchronized (mRestrictionsLock) { 3598 if (updateRestrictionsIfNeededLR( 3599 userId, new Bundle(baseRestrictions), mBaseUserRestrictions)) { 3600 invalidateEffectiveUserRestrictionsLR(userId); 3601 } 3602 } 3603 3604 final UserData userData = getUserDataNoChecks(userId); 3605 synchronized (mPackagesLock) { 3606 if (userData != null) { 3607 writeUserLP(userData); 3608 } else { 3609 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 3610 } 3611 } 3612 } 3613 3614 @Override 3615 public boolean getUserRestriction(int userId, String key) { 3616 return getUserRestrictions(userId).getBoolean(key); 3617 } 3618 3619 @Override 3620 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 3621 synchronized (mUserRestrictionsListeners) { 3622 mUserRestrictionsListeners.add(listener); 3623 } 3624 } 3625 3626 @Override 3627 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 3628 synchronized (mUserRestrictionsListeners) { 3629 mUserRestrictionsListeners.remove(listener); 3630 } 3631 } 3632 3633 @Override 3634 public void setDeviceManaged(boolean isManaged) { 3635 synchronized (mUsersLock) { 3636 mIsDeviceManaged = isManaged; 3637 } 3638 } 3639 3640 @Override 3641 public void setUserManaged(int userId, boolean isManaged) { 3642 synchronized (mUsersLock) { 3643 mIsUserManaged.put(userId, isManaged); 3644 } 3645 } 3646 3647 @Override 3648 public void setUserIcon(int userId, Bitmap bitmap) { 3649 long ident = Binder.clearCallingIdentity(); 3650 try { 3651 synchronized (mPackagesLock) { 3652 UserData userData = getUserDataNoChecks(userId); 3653 if (userData == null || userData.info.partial) { 3654 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 3655 return; 3656 } 3657 writeBitmapLP(userData.info, bitmap); 3658 writeUserLP(userData); 3659 } 3660 sendUserInfoChangedBroadcast(userId); 3661 } finally { 3662 Binder.restoreCallingIdentity(ident); 3663 } 3664 } 3665 3666 @Override 3667 public void setForceEphemeralUsers(boolean forceEphemeralUsers) { 3668 synchronized (mUsersLock) { 3669 mForceEphemeralUsers = forceEphemeralUsers; 3670 } 3671 } 3672 3673 @Override 3674 public void removeAllUsers() { 3675 if (UserHandle.USER_SYSTEM == ActivityManager.getCurrentUser()) { 3676 // Remove the non-system users straight away. 3677 removeNonSystemUsers(); 3678 } else { 3679 // Switch to the system user first and then remove the other users. 3680 BroadcastReceiver userSwitchedReceiver = new BroadcastReceiver() { 3681 @Override 3682 public void onReceive(Context context, Intent intent) { 3683 int userId = 3684 intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3685 if (userId != UserHandle.USER_SYSTEM) { 3686 return; 3687 } 3688 mContext.unregisterReceiver(this); 3689 removeNonSystemUsers(); 3690 } 3691 }; 3692 IntentFilter userSwitchedFilter = new IntentFilter(); 3693 userSwitchedFilter.addAction(Intent.ACTION_USER_SWITCHED); 3694 mContext.registerReceiver( 3695 userSwitchedReceiver, userSwitchedFilter, null, mHandler); 3696 3697 // Switch to the system user. 3698 ActivityManager am = 3699 (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 3700 am.switchUser(UserHandle.USER_SYSTEM); 3701 } 3702 } 3703 3704 @Override 3705 public void onEphemeralUserStop(int userId) { 3706 synchronized (mUsersLock) { 3707 UserInfo userInfo = getUserInfoLU(userId); 3708 if (userInfo != null && userInfo.isEphemeral()) { 3709 // Do not allow switching back to the ephemeral user again as the user is going 3710 // to be deleted. 3711 userInfo.flags |= UserInfo.FLAG_DISABLED; 3712 if (userInfo.isGuest()) { 3713 // Indicate that the guest will be deleted after it stops. 3714 userInfo.guestToRemove = true; 3715 } 3716 } 3717 } 3718 } 3719 3720 @Override 3721 public UserInfo createUserEvenWhenDisallowed(String name, int flags) { 3722 UserInfo user = createUserInternalUnchecked(name, flags, UserHandle.USER_NULL, null); 3723 // Keep this in sync with UserManager.createUser 3724 if (user != null && !user.isAdmin()) { 3725 setUserRestriction(UserManager.DISALLOW_SMS, true, user.id); 3726 setUserRestriction(UserManager.DISALLOW_OUTGOING_CALLS, true, user.id); 3727 } 3728 return user; 3729 } 3730 3731 @Override 3732 public boolean removeUserEvenWhenDisallowed(int userId) { 3733 return removeUserUnchecked(userId); 3734 } 3735 3736 @Override 3737 public boolean isUserRunning(int userId) { 3738 synchronized (mUserStates) { 3739 return mUserStates.get(userId, -1) >= 0; 3740 } 3741 } 3742 3743 @Override 3744 public void setUserState(int userId, int userState) { 3745 synchronized (mUserStates) { 3746 mUserStates.put(userId, userState); 3747 } 3748 } 3749 3750 @Override 3751 public void removeUserState(int userId) { 3752 synchronized (mUserStates) { 3753 mUserStates.delete(userId); 3754 } 3755 } 3756 3757 @Override 3758 public boolean isUserUnlockingOrUnlocked(int userId) { 3759 synchronized (mUserStates) { 3760 int state = mUserStates.get(userId, -1); 3761 return (state == UserState.STATE_RUNNING_UNLOCKING) 3762 || (state == UserState.STATE_RUNNING_UNLOCKED); 3763 } 3764 } 3765 3766 @Override 3767 public boolean isUserUnlocked(int userId) { 3768 synchronized (mUserStates) { 3769 int state = mUserStates.get(userId, -1); 3770 return state == UserState.STATE_RUNNING_UNLOCKED; 3771 } 3772 } 3773 } 3774 3775 /* Remove all the users except of the system one. */ 3776 private void removeNonSystemUsers() { 3777 ArrayList<UserInfo> usersToRemove = new ArrayList<>(); 3778 synchronized (mUsersLock) { 3779 final int userSize = mUsers.size(); 3780 for (int i = 0; i < userSize; i++) { 3781 UserInfo ui = mUsers.valueAt(i).info; 3782 if (ui.id != UserHandle.USER_SYSTEM) { 3783 usersToRemove.add(ui); 3784 } 3785 } 3786 } 3787 for (UserInfo ui: usersToRemove) { 3788 removeUser(ui.id); 3789 } 3790 } 3791 3792 private class Shell extends ShellCommand { 3793 @Override 3794 public int onCommand(String cmd) { 3795 return onShellCommand(this, cmd); 3796 } 3797 3798 @Override 3799 public void onHelp() { 3800 final PrintWriter pw = getOutPrintWriter(); 3801 pw.println("User manager (user) commands:"); 3802 pw.println(" help"); 3803 pw.println(" Print this help text."); 3804 pw.println(""); 3805 pw.println(" list"); 3806 pw.println(" Prints all users on the system."); 3807 } 3808 } 3809 3810 private static void debug(String message) { 3811 Log.d(LOG_TAG, message + 3812 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 3813 } 3814 3815 @VisibleForTesting 3816 static int getMaxManagedProfiles() { 3817 // Allow overriding max managed profiles on debuggable builds for testing 3818 // of multiple profiles. 3819 if (!Build.IS_DEBUGGABLE) { 3820 return MAX_MANAGED_PROFILES; 3821 } else { 3822 return SystemProperties.getInt("persist.sys.max_profiles", 3823 MAX_MANAGED_PROFILES); 3824 } 3825 } 3826 3827 @VisibleForTesting 3828 int getFreeProfileBadgeLU(int parentUserId) { 3829 int maxManagedProfiles = getMaxManagedProfiles(); 3830 boolean[] usedBadges = new boolean[maxManagedProfiles]; 3831 final int userSize = mUsers.size(); 3832 for (int i = 0; i < userSize; i++) { 3833 UserInfo ui = mUsers.valueAt(i).info; 3834 // Check which badge indexes are already used by this profile group. 3835 if (ui.isManagedProfile() 3836 && ui.profileGroupId == parentUserId 3837 && !mRemovingUserIds.get(ui.id) 3838 && ui.profileBadge < maxManagedProfiles) { 3839 usedBadges[ui.profileBadge] = true; 3840 } 3841 } 3842 for (int i = 0; i < maxManagedProfiles; i++) { 3843 if (!usedBadges[i]) { 3844 return i; 3845 } 3846 } 3847 return 0; 3848 } 3849 3850 /** 3851 * Checks if the given user has a managed profile associated with it. 3852 * @param userId The parent user 3853 * @return 3854 */ 3855 boolean hasManagedProfile(int userId) { 3856 synchronized (mUsersLock) { 3857 UserInfo userInfo = getUserInfoLU(userId); 3858 final int userSize = mUsers.size(); 3859 for (int i = 0; i < userSize; i++) { 3860 UserInfo profile = mUsers.valueAt(i).info; 3861 if (userId != profile.id && isProfileOf(userInfo, profile)) { 3862 return true; 3863 } 3864 } 3865 return false; 3866 } 3867 } 3868} 3869