UserManagerService.java revision ae26189aa9a1a2d20ca2006d591d50d7338eb917
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.PackageManager; 42import android.content.pm.PackageManager.NameNotFoundException; 43import android.content.pm.UserInfo; 44import android.content.res.Resources; 45import android.graphics.Bitmap; 46import android.os.Binder; 47import android.os.Build; 48import android.os.Bundle; 49import android.os.Debug; 50import android.os.Environment; 51import android.os.FileUtils; 52import android.os.Handler; 53import android.os.IBinder; 54import android.os.IUserManager; 55import android.os.Message; 56import android.os.ParcelFileDescriptor; 57import android.os.Parcelable; 58import android.os.PersistableBundle; 59import android.os.Process; 60import android.os.RemoteException; 61import android.os.ResultReceiver; 62import android.os.SELinux; 63import android.os.ServiceManager; 64import android.os.ShellCommand; 65import android.os.UserHandle; 66import android.os.UserManager; 67import android.os.UserManagerInternal; 68import android.os.UserManagerInternal.UserRestrictionsListener; 69import android.os.storage.StorageManager; 70import android.security.GateKeeper; 71import android.service.gatekeeper.IGateKeeperService; 72import android.system.ErrnoException; 73import android.system.Os; 74import android.system.OsConstants; 75import android.text.TextUtils; 76import android.util.AtomicFile; 77import android.util.IntArray; 78import android.util.Log; 79import android.util.Slog; 80import android.util.SparseArray; 81import android.util.SparseBooleanArray; 82import android.util.SparseIntArray; 83import android.util.TimeUtils; 84import android.util.Xml; 85 86import com.android.internal.annotations.GuardedBy; 87import com.android.internal.annotations.VisibleForTesting; 88import com.android.internal.app.IAppOpsService; 89import com.android.internal.logging.MetricsLogger; 90import com.android.internal.util.FastXmlSerializer; 91import com.android.internal.util.Preconditions; 92import com.android.internal.util.XmlUtils; 93import com.android.internal.widget.LockPatternUtils; 94import com.android.server.LocalServices; 95import com.android.server.SystemService; 96import com.android.server.am.UserState; 97 98import libcore.io.IoUtils; 99import libcore.util.Objects; 100 101import org.xmlpull.v1.XmlPullParser; 102import org.xmlpull.v1.XmlPullParserException; 103import org.xmlpull.v1.XmlSerializer; 104 105import java.io.BufferedOutputStream; 106import java.io.File; 107import java.io.FileDescriptor; 108import java.io.FileInputStream; 109import java.io.FileNotFoundException; 110import java.io.FileOutputStream; 111import java.io.IOException; 112import java.io.PrintWriter; 113import java.nio.charset.StandardCharsets; 114import java.util.ArrayList; 115import java.util.List; 116 117/** 118 * Service for {@link UserManager}. 119 * 120 * Method naming convention: 121 * <ul> 122 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 123 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 124 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 125 * </ul> 126 */ 127public class UserManagerService extends IUserManager.Stub { 128 129 private static final String LOG_TAG = "UserManagerService"; 130 static final boolean DBG = false; // DO NOT SUBMIT WITH TRUE 131 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 132 133 private static final String TAG_NAME = "name"; 134 private static final String TAG_ACCOUNT = "account"; 135 private static final String ATTR_FLAGS = "flags"; 136 private static final String ATTR_ICON_PATH = "icon"; 137 private static final String ATTR_ID = "id"; 138 private static final String ATTR_CREATION_TIME = "created"; 139 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 140 private static final String ATTR_LAST_LOGGED_IN_FINGERPRINT = "lastLoggedInFingerprint"; 141 private static final String ATTR_SERIAL_NO = "serialNumber"; 142 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 143 private static final String ATTR_PARTIAL = "partial"; 144 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 145 private static final String ATTR_USER_VERSION = "version"; 146 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 147 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 148 private static final String ATTR_SEED_ACCOUNT_NAME = "seedAccountName"; 149 private static final String ATTR_SEED_ACCOUNT_TYPE = "seedAccountType"; 150 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 151 private static final String TAG_USERS = "users"; 152 private static final String TAG_USER = "user"; 153 private static final String TAG_RESTRICTIONS = "restrictions"; 154 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 155 private static final String TAG_GLOBAL_RESTRICTION_OWNER_ID = "globalRestrictionOwnerUserId"; 156 private static final String TAG_ENTRY = "entry"; 157 private static final String TAG_VALUE = "value"; 158 private static final String TAG_SEED_ACCOUNT_OPTIONS = "seedAccountOptions"; 159 private static final String ATTR_KEY = "key"; 160 private static final String ATTR_VALUE_TYPE = "type"; 161 private static final String ATTR_MULTIPLE = "m"; 162 163 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 164 private static final String ATTR_TYPE_STRING = "s"; 165 private static final String ATTR_TYPE_BOOLEAN = "b"; 166 private static final String ATTR_TYPE_INTEGER = "i"; 167 private static final String ATTR_TYPE_BUNDLE = "B"; 168 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 169 170 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 171 private static final String USER_LIST_FILENAME = "userlist.xml"; 172 private static final String USER_PHOTO_FILENAME = "photo.png"; 173 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 174 175 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 176 private static final String XML_SUFFIX = ".xml"; 177 178 private static final int ALLOWED_FLAGS_FOR_CREATE_USERS_PERMISSION = 179 UserInfo.FLAG_MANAGED_PROFILE 180 | UserInfo.FLAG_EPHEMERAL 181 | UserInfo.FLAG_RESTRICTED 182 | UserInfo.FLAG_GUEST; 183 184 private static final int MIN_USER_ID = 10; 185 // We need to keep process uid within Integer.MAX_VALUE. 186 private static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 187 188 private static final int USER_VERSION = 6; 189 190 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 191 192 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 193 // without first making sure that the rest of the framework is prepared for it. 194 private static final int MAX_MANAGED_PROFILES = 1; 195 196 static final int WRITE_USER_MSG = 1; 197 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 198 199 private static final String XATTR_SERIAL = "user.serial"; 200 201 // Tron counters 202 private static final String TRON_GUEST_CREATED = "users_guest_created"; 203 private static final String TRON_USER_CREATED = "users_user_created"; 204 205 private final Context mContext; 206 private final PackageManagerService mPm; 207 private final Object mPackagesLock; 208 // Short-term lock for internal state, when interaction/sync with PM is not required 209 private final Object mUsersLock = new Object(); 210 private final Object mRestrictionsLock = new Object(); 211 212 private final Handler mHandler; 213 214 private final File mUsersDir; 215 private final File mUserListFile; 216 217 private static final IBinder mUserRestriconToken = new Binder(); 218 219 /** 220 * User-related information that is used for persisting to flash. Only UserInfo is 221 * directly exposed to other system apps. 222 */ 223 private static class UserData { 224 // Basic user information and properties 225 UserInfo info; 226 // Account name used when there is a strong association between a user and an account 227 String account; 228 // Account information for seeding into a newly created user. This could also be 229 // used for login validation for an existing user, for updating their credentials. 230 // In the latter case, data may not need to be persisted as it is only valid for the 231 // current login session. 232 String seedAccountName; 233 String seedAccountType; 234 PersistableBundle seedAccountOptions; 235 // Whether to perist the seed account information to be available after a boot 236 boolean persistSeedData; 237 238 void clearSeedAccountData() { 239 seedAccountName = null; 240 seedAccountType = null; 241 seedAccountOptions = null; 242 persistSeedData = false; 243 } 244 } 245 246 @GuardedBy("mUsersLock") 247 private final SparseArray<UserData> mUsers = new SparseArray<>(); 248 249 /** 250 * User restrictions set via UserManager. This doesn't include restrictions set by 251 * device owner / profile owners. 252 * 253 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 254 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 255 * maybe shared between {@link #mBaseUserRestrictions} and 256 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 257 * (Otherwise we won't be able to detect what restrictions have changed in 258 * {@link #updateUserRestrictionsInternalLR}. 259 */ 260 @GuardedBy("mRestrictionsLock") 261 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 262 263 /** 264 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 265 * with device / profile owner restrictions. We'll initialize it lazily; use 266 * {@link #getEffectiveUserRestrictions} to access it. 267 * 268 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 269 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 270 * maybe shared between {@link #mBaseUserRestrictions} and 271 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 272 * (Otherwise we won't be able to detect what restrictions have changed in 273 * {@link #updateUserRestrictionsInternalLR}. 274 */ 275 @GuardedBy("mRestrictionsLock") 276 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 277 278 /** 279 * User restrictions that have already been applied in 280 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 281 * that have changed since the last 282 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 283 */ 284 @GuardedBy("mRestrictionsLock") 285 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 286 287 /** 288 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 289 * that should be applied to all users, including guests. 290 */ 291 @GuardedBy("mRestrictionsLock") 292 private Bundle mDevicePolicyGlobalUserRestrictions; 293 294 /** 295 * Id of the user that set global restrictions. 296 */ 297 @GuardedBy("mRestrictionsLock") 298 private int mGlobalRestrictionOwnerUserId = UserHandle.USER_NULL; 299 300 /** 301 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 302 * for each user. 303 */ 304 @GuardedBy("mRestrictionsLock") 305 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 306 307 @GuardedBy("mGuestRestrictions") 308 private final Bundle mGuestRestrictions = new Bundle(); 309 310 /** 311 * Set of user IDs being actively removed. Removed IDs linger in this set 312 * for several seconds to work around a VFS caching issue. 313 */ 314 @GuardedBy("mUsersLock") 315 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 316 317 @GuardedBy("mUsersLock") 318 private int[] mUserIds; 319 @GuardedBy("mPackagesLock") 320 private int mNextSerialNumber; 321 private int mUserVersion = 0; 322 323 private IAppOpsService mAppOpsService; 324 325 private final LocalService mLocalService; 326 327 @GuardedBy("mUsersLock") 328 private boolean mIsDeviceManaged; 329 330 @GuardedBy("mUsersLock") 331 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 332 333 @GuardedBy("mUserRestrictionsListeners") 334 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 335 new ArrayList<>(); 336 337 private final LockPatternUtils mLockPatternUtils; 338 339 private final String ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK = 340 "com.android.server.pm.DISABLE_QUIET_MODE_AFTER_UNLOCK"; 341 342 private final BroadcastReceiver mDisableQuietModeCallback = new BroadcastReceiver() { 343 @Override 344 public void onReceive(Context context, Intent intent) { 345 if (ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK.equals(intent.getAction())) { 346 final IntentSender target = intent.getParcelableExtra(Intent.EXTRA_INTENT); 347 final int userHandle = intent.getIntExtra(Intent.EXTRA_USER_ID, 0); 348 setQuietModeEnabled(userHandle, false); 349 if (target != null) { 350 try { 351 mContext.startIntentSender(target, null, 0, 0, 0); 352 } catch (IntentSender.SendIntentException e) { 353 /* ignore */ 354 } 355 } 356 } 357 } 358 }; 359 360 /** 361 * Whether all users should be created ephemeral. 362 */ 363 @GuardedBy("mUsersLock") 364 private boolean mForceEphemeralUsers; 365 366 @GuardedBy("mUserStates") 367 private final SparseIntArray mUserStates = new SparseIntArray(); 368 369 private static UserManagerService sInstance; 370 371 public static UserManagerService getInstance() { 372 synchronized (UserManagerService.class) { 373 return sInstance; 374 } 375 } 376 377 public static class LifeCycle extends SystemService { 378 379 private UserManagerService mUms; 380 381 /** 382 * @param context 383 */ 384 public LifeCycle(Context context) { 385 super(context); 386 } 387 388 @Override 389 public void onStart() { 390 mUms = UserManagerService.getInstance(); 391 publishBinderService(Context.USER_SERVICE, mUms); 392 } 393 394 @Override 395 public void onBootPhase(int phase) { 396 if (phase == SystemService.PHASE_ACTIVITY_MANAGER_READY) { 397 mUms.cleanupPartialUsers(); 398 } 399 } 400 } 401 402 @VisibleForTesting 403 UserManagerService(File dataDir) { 404 this(null, null, new Object(), dataDir); 405 } 406 407 /** 408 * Called by package manager to create the service. This is closely 409 * associated with the package manager, and the given lock is the 410 * package manager's own lock. 411 */ 412 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 413 this(context, pm, packagesLock, Environment.getDataDirectory()); 414 } 415 416 private UserManagerService(Context context, PackageManagerService pm, 417 Object packagesLock, File dataDir) { 418 mContext = context; 419 mPm = pm; 420 mPackagesLock = packagesLock; 421 mHandler = new MainHandler(); 422 synchronized (mPackagesLock) { 423 mUsersDir = new File(dataDir, USER_INFO_DIR); 424 mUsersDir.mkdirs(); 425 // Make zeroth user directory, for services to migrate their files to that location 426 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 427 userZeroDir.mkdirs(); 428 FileUtils.setPermissions(mUsersDir.toString(), 429 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 430 -1, -1); 431 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 432 initDefaultGuestRestrictions(); 433 readUserListLP(); 434 sInstance = this; 435 } 436 mLocalService = new LocalService(); 437 LocalServices.addService(UserManagerInternal.class, mLocalService); 438 mLockPatternUtils = new LockPatternUtils(mContext); 439 mUserStates.put(UserHandle.USER_SYSTEM, UserState.STATE_BOOTING); 440 } 441 442 void systemReady() { 443 mAppOpsService = IAppOpsService.Stub.asInterface( 444 ServiceManager.getService(Context.APP_OPS_SERVICE)); 445 446 synchronized (mRestrictionsLock) { 447 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 448 } 449 450 UserInfo currentGuestUser = findCurrentGuestUser(); 451 if (currentGuestUser != null && !hasUserRestriction( 452 UserManager.DISALLOW_CONFIG_WIFI, currentGuestUser.id)) { 453 // If a guest user currently exists, apply the DISALLOW_CONFIG_WIFI option 454 // to it, in case this guest was created in a previous version where this 455 // user restriction was not a default guest restriction. 456 setUserRestriction(UserManager.DISALLOW_CONFIG_WIFI, true, currentGuestUser.id); 457 } 458 459 maybeInitializeDemoMode(UserHandle.USER_SYSTEM); 460 mContext.registerReceiver(mDisableQuietModeCallback, 461 new IntentFilter(ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK), 462 null, mHandler); 463 } 464 465 void cleanupPartialUsers() { 466 // Prune out any partially created, partially removed and ephemeral users. 467 ArrayList<UserInfo> partials = new ArrayList<>(); 468 synchronized (mUsersLock) { 469 final int userSize = mUsers.size(); 470 for (int i = 0; i < userSize; i++) { 471 UserInfo ui = mUsers.valueAt(i).info; 472 if ((ui.partial || ui.guestToRemove || ui.isEphemeral()) && i != 0) { 473 partials.add(ui); 474 mRemovingUserIds.append(ui.id, true); 475 ui.partial = true; 476 } 477 } 478 } 479 final int partialsSize = partials.size(); 480 for (int i = 0; i < partialsSize; i++) { 481 UserInfo ui = partials.get(i); 482 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 483 + " (name=" + ui.name + ")"); 484 removeUserState(ui.id); 485 } 486 } 487 488 @Override 489 public String getUserAccount(int userId) { 490 checkManageUserAndAcrossUsersFullPermission("get user account"); 491 synchronized (mUsersLock) { 492 return mUsers.get(userId).account; 493 } 494 } 495 496 @Override 497 public void setUserAccount(int userId, String accountName) { 498 checkManageUserAndAcrossUsersFullPermission("set user account"); 499 UserData userToUpdate = null; 500 synchronized (mPackagesLock) { 501 synchronized (mUsersLock) { 502 final UserData userData = mUsers.get(userId); 503 if (userData == null) { 504 Slog.e(LOG_TAG, "User not found for setting user account: u" + userId); 505 return; 506 } 507 String currentAccount = userData.account; 508 if (!Objects.equal(currentAccount, accountName)) { 509 userData.account = accountName; 510 userToUpdate = userData; 511 } 512 } 513 514 if (userToUpdate != null) { 515 writeUserLP(userToUpdate); 516 } 517 } 518 } 519 520 @Override 521 public UserInfo getPrimaryUser() { 522 checkManageUsersPermission("query users"); 523 synchronized (mUsersLock) { 524 final int userSize = mUsers.size(); 525 for (int i = 0; i < userSize; i++) { 526 UserInfo ui = mUsers.valueAt(i).info; 527 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 528 return ui; 529 } 530 } 531 } 532 return null; 533 } 534 535 @Override 536 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 537 checkManageOrCreateUsersPermission("query users"); 538 synchronized (mUsersLock) { 539 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 540 final int userSize = mUsers.size(); 541 for (int i = 0; i < userSize; i++) { 542 UserInfo ui = mUsers.valueAt(i).info; 543 if (ui.partial) { 544 continue; 545 } 546 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 547 users.add(userWithName(ui)); 548 } 549 } 550 return users; 551 } 552 } 553 554 @Override 555 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 556 boolean returnFullInfo = true; 557 if (userId != UserHandle.getCallingUserId()) { 558 checkManageUsersPermission("getting profiles related to user " + userId); 559 } else { 560 returnFullInfo = hasManageUsersPermission(); 561 } 562 final long ident = Binder.clearCallingIdentity(); 563 try { 564 synchronized (mUsersLock) { 565 return getProfilesLU(userId, enabledOnly, returnFullInfo); 566 } 567 } finally { 568 Binder.restoreCallingIdentity(ident); 569 } 570 } 571 572 @Override 573 public int[] getProfileIds(int userId, boolean enabledOnly) { 574 if (userId != UserHandle.getCallingUserId()) { 575 checkManageUsersPermission("getting profiles related to user " + userId); 576 } 577 final long ident = Binder.clearCallingIdentity(); 578 try { 579 synchronized (mUsersLock) { 580 return getProfileIdsLU(userId, enabledOnly).toArray(); 581 } 582 } finally { 583 Binder.restoreCallingIdentity(ident); 584 } 585 } 586 587 /** Assume permissions already checked and caller's identity cleared */ 588 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly, boolean fullInfo) { 589 IntArray profileIds = getProfileIdsLU(userId, enabledOnly); 590 ArrayList<UserInfo> users = new ArrayList<>(profileIds.size()); 591 for (int i = 0; i < profileIds.size(); i++) { 592 int profileId = profileIds.get(i); 593 UserInfo userInfo = mUsers.get(profileId).info; 594 // If full info is not required - clear PII data to prevent 3P apps from reading it 595 if (!fullInfo) { 596 userInfo = new UserInfo(userInfo); 597 userInfo.name = null; 598 userInfo.iconPath = null; 599 } else { 600 userInfo = userWithName(userInfo); 601 } 602 users.add(userInfo); 603 } 604 return users; 605 } 606 607 /** 608 * Assume permissions already checked and caller's identity cleared 609 */ 610 private IntArray getProfileIdsLU(int userId, boolean enabledOnly) { 611 UserInfo user = getUserInfoLU(userId); 612 IntArray result = new IntArray(mUsers.size()); 613 if (user == null) { 614 // Probably a dying user 615 return result; 616 } 617 final int userSize = mUsers.size(); 618 for (int i = 0; i < userSize; i++) { 619 UserInfo profile = mUsers.valueAt(i).info; 620 if (!isProfileOf(user, profile)) { 621 continue; 622 } 623 if (enabledOnly && !profile.isEnabled()) { 624 continue; 625 } 626 if (mRemovingUserIds.get(profile.id)) { 627 continue; 628 } 629 if (profile.partial) { 630 continue; 631 } 632 result.add(profile.id); 633 } 634 return result; 635 } 636 637 @Override 638 public int getCredentialOwnerProfile(int userHandle) { 639 checkManageUsersPermission("get the credential owner"); 640 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 641 synchronized (mUsersLock) { 642 UserInfo profileParent = getProfileParentLU(userHandle); 643 if (profileParent != null) { 644 return profileParent.id; 645 } 646 } 647 } 648 649 return userHandle; 650 } 651 652 @Override 653 public boolean isSameProfileGroup(int userId, int otherUserId) { 654 if (userId == otherUserId) return true; 655 checkManageUsersPermission("check if in the same profile group"); 656 synchronized (mPackagesLock) { 657 return isSameProfileGroupLP(userId, otherUserId); 658 } 659 } 660 661 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 662 synchronized (mUsersLock) { 663 UserInfo userInfo = getUserInfoLU(userId); 664 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 665 return false; 666 } 667 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 668 if (otherUserInfo == null 669 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 670 return false; 671 } 672 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 673 } 674 } 675 676 @Override 677 public UserInfo getProfileParent(int userHandle) { 678 checkManageUsersPermission("get the profile parent"); 679 synchronized (mUsersLock) { 680 return getProfileParentLU(userHandle); 681 } 682 } 683 684 private UserInfo getProfileParentLU(int userHandle) { 685 UserInfo profile = getUserInfoLU(userHandle); 686 if (profile == null) { 687 return null; 688 } 689 int parentUserId = profile.profileGroupId; 690 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 691 return null; 692 } else { 693 return getUserInfoLU(parentUserId); 694 } 695 } 696 697 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 698 return user.id == profile.id || 699 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 700 && user.profileGroupId == profile.profileGroupId); 701 } 702 703 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 704 UserHandle parentHandle, boolean inQuietMode) { 705 Intent intent = new Intent(); 706 if (inQuietMode) { 707 intent.setAction(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE); 708 } else { 709 intent.setAction(Intent.ACTION_MANAGED_PROFILE_AVAILABLE); 710 } 711 intent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 712 intent.putExtra(Intent.EXTRA_USER, profileHandle); 713 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 714 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 715 mContext.sendBroadcastAsUser(intent, parentHandle); 716 } 717 718 @Override 719 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 720 checkManageUsersPermission("silence profile"); 721 boolean changed = false; 722 UserInfo profile, parent; 723 synchronized (mPackagesLock) { 724 synchronized (mUsersLock) { 725 profile = getUserInfoLU(userHandle); 726 parent = getProfileParentLU(userHandle); 727 728 } 729 if (profile == null || !profile.isManagedProfile()) { 730 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 731 } 732 if (profile.isQuietModeEnabled() != enableQuietMode) { 733 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 734 writeUserLP(getUserDataLU(profile.id)); 735 changed = true; 736 } 737 } 738 if (changed) { 739 long identity = Binder.clearCallingIdentity(); 740 try { 741 if (enableQuietMode) { 742 ActivityManagerNative.getDefault().stopUser(userHandle, /* force */true, null); 743 LocalServices.getService(ActivityManagerInternal.class) 744 .killForegroundAppsForUser(userHandle); 745 } else { 746 ActivityManagerNative.getDefault().startUserInBackground(userHandle); 747 } 748 } catch (RemoteException e) { 749 Slog.e(LOG_TAG, "fail to start/stop user for quiet mode", e); 750 } finally { 751 Binder.restoreCallingIdentity(identity); 752 } 753 754 broadcastProfileAvailabilityChanges(profile.getUserHandle(), parent.getUserHandle(), 755 enableQuietMode); 756 } 757 } 758 759 @Override 760 public boolean isQuietModeEnabled(int userHandle) { 761 synchronized (mPackagesLock) { 762 UserInfo info; 763 synchronized (mUsersLock) { 764 info = getUserInfoLU(userHandle); 765 } 766 if (info == null || !info.isManagedProfile()) { 767 return false; 768 } 769 return info.isQuietModeEnabled(); 770 } 771 } 772 773 @Override 774 public boolean trySetQuietModeDisabled(int userHandle, IntentSender target) { 775 checkManageUsersPermission("silence profile"); 776 if (StorageManager.isUserKeyUnlocked(userHandle) 777 || !mLockPatternUtils.isSecure(userHandle)) { 778 // if the user is already unlocked, no need to show a profile challenge 779 setQuietModeEnabled(userHandle, false); 780 return true; 781 } 782 783 long identity = Binder.clearCallingIdentity(); 784 try { 785 // otherwise, we show a profile challenge to trigger decryption of the user 786 final KeyguardManager km = (KeyguardManager) mContext.getSystemService( 787 Context.KEYGUARD_SERVICE); 788 // We should use userHandle not credentialOwnerUserId here, as even if it is unified 789 // lock, confirm screenlock page will know and show personal challenge, and unlock 790 // work profile when personal challenge is correct 791 final Intent unlockIntent = km.createConfirmDeviceCredentialIntent(null, null, 792 userHandle); 793 if (unlockIntent == null) { 794 return false; 795 } 796 final Intent callBackIntent = new Intent( 797 ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK); 798 if (target != null) { 799 callBackIntent.putExtra(Intent.EXTRA_INTENT, target); 800 } 801 callBackIntent.putExtra(Intent.EXTRA_USER_ID, userHandle); 802 callBackIntent.setPackage(mContext.getPackageName()); 803 callBackIntent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); 804 final PendingIntent pendingIntent = PendingIntent.getBroadcast( 805 mContext, 806 0, 807 callBackIntent, 808 PendingIntent.FLAG_CANCEL_CURRENT | 809 PendingIntent.FLAG_ONE_SHOT | 810 PendingIntent.FLAG_IMMUTABLE); 811 // After unlocking the challenge, it will disable quiet mode and run the original 812 // intentSender 813 unlockIntent.putExtra(Intent.EXTRA_INTENT, pendingIntent.getIntentSender()); 814 unlockIntent.setFlags(FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS); 815 mContext.startActivity(unlockIntent); 816 } finally { 817 Binder.restoreCallingIdentity(identity); 818 } 819 return false; 820 } 821 822 @Override 823 public void setUserEnabled(int userId) { 824 checkManageUsersPermission("enable user"); 825 synchronized (mPackagesLock) { 826 UserInfo info; 827 synchronized (mUsersLock) { 828 info = getUserInfoLU(userId); 829 } 830 if (info != null && !info.isEnabled()) { 831 info.flags ^= UserInfo.FLAG_DISABLED; 832 writeUserLP(getUserDataLU(info.id)); 833 } 834 } 835 } 836 837 @Override 838 public UserInfo getUserInfo(int userId) { 839 checkManageOrCreateUsersPermission("query user"); 840 synchronized (mUsersLock) { 841 return userWithName(getUserInfoLU(userId)); 842 } 843 } 844 845 /** 846 * Returns a UserInfo object with the name filled in, for Owner, or the original 847 * if the name is already set. 848 */ 849 private UserInfo userWithName(UserInfo orig) { 850 if (orig != null && orig.name == null && orig.id == UserHandle.USER_SYSTEM) { 851 UserInfo withName = new UserInfo(orig); 852 withName.name = getOwnerName(); 853 return withName; 854 } else { 855 return orig; 856 } 857 } 858 859 @Override 860 public boolean isManagedProfile(int userId) { 861 int callingUserId = UserHandle.getCallingUserId(); 862 if (callingUserId != userId && !hasManageUsersPermission()) { 863 synchronized (mPackagesLock) { 864 if (!isSameProfileGroupLP(callingUserId, userId)) { 865 throw new SecurityException( 866 "You need MANAGE_USERS permission to: check if specified user a " + 867 "managed profile outside your profile group"); 868 } 869 } 870 } 871 synchronized (mUsersLock) { 872 UserInfo userInfo = getUserInfoLU(userId); 873 return userInfo != null && userInfo.isManagedProfile(); 874 } 875 } 876 877 @Override 878 public boolean isRestricted() { 879 synchronized (mUsersLock) { 880 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 881 } 882 } 883 884 @Override 885 public boolean canHaveRestrictedProfile(int userId) { 886 checkManageUsersPermission("canHaveRestrictedProfile"); 887 synchronized (mUsersLock) { 888 final UserInfo userInfo = getUserInfoLU(userId); 889 if (userInfo == null || !userInfo.canHaveProfile()) { 890 return false; 891 } 892 if (!userInfo.isAdmin()) { 893 return false; 894 } 895 // restricted profile can be created if there is no DO set and the admin user has no PO; 896 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 897 } 898 } 899 900 /* 901 * Should be locked on mUsers before calling this. 902 */ 903 private UserInfo getUserInfoLU(int userId) { 904 final UserData userData = mUsers.get(userId); 905 // If it is partial and not in the process of being removed, return as unknown user. 906 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 907 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 908 return null; 909 } 910 return userData != null ? userData.info : null; 911 } 912 913 private UserData getUserDataLU(int userId) { 914 final UserData userData = mUsers.get(userId); 915 // If it is partial and not in the process of being removed, return as unknown user. 916 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 917 return null; 918 } 919 return userData; 920 } 921 922 /** 923 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 924 * <p>No permissions checking or any addition checks are made</p> 925 */ 926 private UserInfo getUserInfoNoChecks(int userId) { 927 synchronized (mUsersLock) { 928 final UserData userData = mUsers.get(userId); 929 return userData != null ? userData.info : null; 930 } 931 } 932 933 /** 934 * Obtains {@link #mUsersLock} and return UserData from mUsers. 935 * <p>No permissions checking or any addition checks are made</p> 936 */ 937 private UserData getUserDataNoChecks(int userId) { 938 synchronized (mUsersLock) { 939 return mUsers.get(userId); 940 } 941 } 942 943 /** Called by PackageManagerService */ 944 public boolean exists(int userId) { 945 return getUserInfoNoChecks(userId) != null; 946 } 947 948 @Override 949 public void setUserName(int userId, String name) { 950 checkManageUsersPermission("rename users"); 951 boolean changed = false; 952 synchronized (mPackagesLock) { 953 UserData userData = getUserDataNoChecks(userId); 954 if (userData == null || userData.info.partial) { 955 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 956 return; 957 } 958 if (name != null && !name.equals(userData.info.name)) { 959 userData.info.name = name; 960 writeUserLP(userData); 961 changed = true; 962 } 963 } 964 if (changed) { 965 sendUserInfoChangedBroadcast(userId); 966 } 967 } 968 969 @Override 970 public void setUserIcon(int userId, Bitmap bitmap) { 971 checkManageUsersPermission("update users"); 972 if (hasUserRestriction(UserManager.DISALLOW_SET_USER_ICON, userId)) { 973 Log.w(LOG_TAG, "Cannot set user icon. DISALLOW_SET_USER_ICON is enabled."); 974 return; 975 } 976 mLocalService.setUserIcon(userId, bitmap); 977 } 978 979 980 981 private void sendUserInfoChangedBroadcast(int userId) { 982 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 983 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 984 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 985 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 986 } 987 988 @Override 989 public ParcelFileDescriptor getUserIcon(int targetUserId) { 990 String iconPath; 991 synchronized (mPackagesLock) { 992 UserInfo targetUserInfo = getUserInfoNoChecks(targetUserId); 993 if (targetUserInfo == null || targetUserInfo.partial) { 994 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + targetUserId); 995 return null; 996 } 997 998 final int callingUserId = UserHandle.getCallingUserId(); 999 final int callingGroupId = getUserInfoNoChecks(callingUserId).profileGroupId; 1000 final int targetGroupId = targetUserInfo.profileGroupId; 1001 final boolean sameGroup = (callingGroupId != UserInfo.NO_PROFILE_GROUP_ID 1002 && callingGroupId == targetGroupId); 1003 if ((callingUserId != targetUserId) && !sameGroup) { 1004 checkManageUsersPermission("get the icon of a user who is not related"); 1005 } 1006 1007 if (targetUserInfo.iconPath == null) { 1008 return null; 1009 } 1010 iconPath = targetUserInfo.iconPath; 1011 } 1012 1013 try { 1014 return ParcelFileDescriptor.open( 1015 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 1016 } catch (FileNotFoundException e) { 1017 Log.e(LOG_TAG, "Couldn't find icon file", e); 1018 } 1019 return null; 1020 } 1021 1022 public void makeInitialized(int userId) { 1023 checkManageUsersPermission("makeInitialized"); 1024 boolean scheduleWriteUser = false; 1025 UserData userData; 1026 synchronized (mUsersLock) { 1027 userData = mUsers.get(userId); 1028 if (userData == null || userData.info.partial) { 1029 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 1030 return; 1031 } 1032 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1033 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1034 scheduleWriteUser = true; 1035 } 1036 } 1037 if (scheduleWriteUser) { 1038 scheduleWriteUser(userData); 1039 } 1040 } 1041 1042 /** 1043 * If default guest restrictions haven't been initialized yet, add the basic 1044 * restrictions. 1045 */ 1046 private void initDefaultGuestRestrictions() { 1047 synchronized (mGuestRestrictions) { 1048 if (mGuestRestrictions.isEmpty()) { 1049 mGuestRestrictions.putBoolean(UserManager.DISALLOW_CONFIG_WIFI, true); 1050 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 1051 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 1052 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 1053 } 1054 } 1055 } 1056 1057 @Override 1058 public Bundle getDefaultGuestRestrictions() { 1059 checkManageUsersPermission("getDefaultGuestRestrictions"); 1060 synchronized (mGuestRestrictions) { 1061 return new Bundle(mGuestRestrictions); 1062 } 1063 } 1064 1065 @Override 1066 public void setDefaultGuestRestrictions(Bundle restrictions) { 1067 checkManageUsersPermission("setDefaultGuestRestrictions"); 1068 synchronized (mGuestRestrictions) { 1069 mGuestRestrictions.clear(); 1070 mGuestRestrictions.putAll(restrictions); 1071 } 1072 synchronized (mPackagesLock) { 1073 writeUserListLP(); 1074 } 1075 } 1076 1077 /** 1078 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 1079 */ 1080 void setDevicePolicyUserRestrictionsInner(int userId, @NonNull Bundle local, 1081 @Nullable Bundle global) { 1082 Preconditions.checkNotNull(local); 1083 boolean globalChanged = false; 1084 boolean localChanged; 1085 synchronized (mRestrictionsLock) { 1086 if (global != null) { 1087 // Update global. 1088 globalChanged = !UserRestrictionsUtils.areEqual( 1089 mDevicePolicyGlobalUserRestrictions, global); 1090 if (globalChanged) { 1091 mDevicePolicyGlobalUserRestrictions = global; 1092 } 1093 // Remember the global restriction owner userId to be able to make a distinction 1094 // in getUserRestrictionSource on who set local policies. 1095 mGlobalRestrictionOwnerUserId = userId; 1096 } else { 1097 if (mGlobalRestrictionOwnerUserId == userId) { 1098 // When profile owner sets restrictions it passes null global bundle and we 1099 // reset global restriction owner userId. 1100 // This means this user used to have DO, but now the DO is gone and the user 1101 // instead has PO. 1102 mGlobalRestrictionOwnerUserId = UserHandle.USER_NULL; 1103 } 1104 } 1105 { 1106 // Update local. 1107 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 1108 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 1109 if (localChanged) { 1110 mDevicePolicyLocalUserRestrictions.put(userId, local); 1111 } 1112 } 1113 } 1114 if (DBG) { 1115 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 1116 + " global=" + global + (globalChanged ? " (changed)" : "") 1117 + " local=" + local + (localChanged ? " (changed)" : "") 1118 ); 1119 } 1120 // Don't call them within the mRestrictionsLock. 1121 synchronized (mPackagesLock) { 1122 if (localChanged) { 1123 writeUserLP(getUserDataNoChecks(userId)); 1124 } 1125 if (globalChanged) { 1126 writeUserListLP(); 1127 } 1128 } 1129 1130 synchronized (mRestrictionsLock) { 1131 if (globalChanged) { 1132 applyUserRestrictionsForAllUsersLR(); 1133 } else if (localChanged) { 1134 applyUserRestrictionsLR(userId); 1135 } 1136 } 1137 } 1138 1139 @GuardedBy("mRestrictionsLock") 1140 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 1141 final Bundle baseRestrictions = 1142 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 1143 final Bundle global = mDevicePolicyGlobalUserRestrictions; 1144 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 1145 1146 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 1147 // Common case first. 1148 return baseRestrictions; 1149 } 1150 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 1151 UserRestrictionsUtils.merge(effective, global); 1152 UserRestrictionsUtils.merge(effective, local); 1153 1154 return effective; 1155 } 1156 1157 @GuardedBy("mRestrictionsLock") 1158 private void invalidateEffectiveUserRestrictionsLR(int userId) { 1159 if (DBG) { 1160 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 1161 } 1162 mCachedEffectiveUserRestrictions.remove(userId); 1163 } 1164 1165 private Bundle getEffectiveUserRestrictions(int userId) { 1166 synchronized (mRestrictionsLock) { 1167 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 1168 if (restrictions == null) { 1169 restrictions = computeEffectiveUserRestrictionsLR(userId); 1170 mCachedEffectiveUserRestrictions.put(userId, restrictions); 1171 } 1172 return restrictions; 1173 } 1174 } 1175 1176 /** @return a specific user restriction that's in effect currently. */ 1177 @Override 1178 public boolean hasUserRestriction(String restrictionKey, int userId) { 1179 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1180 return false; 1181 } 1182 Bundle restrictions = getEffectiveUserRestrictions(userId); 1183 return restrictions != null && restrictions.getBoolean(restrictionKey); 1184 } 1185 1186 /** 1187 * @hide 1188 * 1189 * Returns who set a user restriction on a user. 1190 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 1191 * @param restrictionKey the string key representing the restriction 1192 * @param userId the id of the user for whom to retrieve the restrictions. 1193 * @return The source of user restriction. Any combination of 1194 * {@link UserManager#RESTRICTION_NOT_SET}, 1195 * {@link UserManager#RESTRICTION_SOURCE_SYSTEM}, 1196 * {@link UserManager#RESTRICTION_SOURCE_DEVICE_OWNER} 1197 * and {@link UserManager#RESTRICTION_SOURCE_PROFILE_OWNER} 1198 */ 1199 @Override 1200 public int getUserRestrictionSource(String restrictionKey, int userId) { 1201 checkManageUsersPermission("getUserRestrictionSource"); 1202 int result = UserManager.RESTRICTION_NOT_SET; 1203 1204 // Shortcut for the most common case 1205 if (!hasUserRestriction(restrictionKey, userId)) { 1206 return result; 1207 } 1208 1209 if (hasBaseUserRestriction(restrictionKey, userId)) { 1210 result |= UserManager.RESTRICTION_SOURCE_SYSTEM; 1211 } 1212 1213 synchronized(mRestrictionsLock) { 1214 Bundle localRestrictions = mDevicePolicyLocalUserRestrictions.get(userId); 1215 if (!UserRestrictionsUtils.isEmpty(localRestrictions) 1216 && localRestrictions.getBoolean(restrictionKey)) { 1217 // Local restrictions may have been set by device owner the userId of which is 1218 // stored in mGlobalRestrictionOwnerUserId. 1219 if (mGlobalRestrictionOwnerUserId == userId) { 1220 result |= UserManager.RESTRICTION_SOURCE_DEVICE_OWNER; 1221 } else { 1222 result |= UserManager.RESTRICTION_SOURCE_PROFILE_OWNER; 1223 } 1224 } 1225 if (!UserRestrictionsUtils.isEmpty(mDevicePolicyGlobalUserRestrictions) 1226 && mDevicePolicyGlobalUserRestrictions.getBoolean(restrictionKey)) { 1227 result |= UserManager.RESTRICTION_SOURCE_DEVICE_OWNER; 1228 } 1229 } 1230 1231 return result; 1232 } 1233 1234 /** 1235 * @return UserRestrictions that are in effect currently. This always returns a new 1236 * {@link Bundle}. 1237 */ 1238 @Override 1239 public Bundle getUserRestrictions(int userId) { 1240 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 1241 } 1242 1243 @Override 1244 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 1245 checkManageUsersPermission("hasBaseUserRestriction"); 1246 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1247 return false; 1248 } 1249 synchronized (mRestrictionsLock) { 1250 Bundle bundle = mBaseUserRestrictions.get(userId); 1251 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 1252 } 1253 } 1254 1255 @Override 1256 public void setUserRestriction(String key, boolean value, int userId) { 1257 checkManageUsersPermission("setUserRestriction"); 1258 if (!UserRestrictionsUtils.isValidRestriction(key)) { 1259 return; 1260 } 1261 synchronized (mRestrictionsLock) { 1262 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 1263 // a copy. 1264 final Bundle newRestrictions = UserRestrictionsUtils.clone( 1265 mBaseUserRestrictions.get(userId)); 1266 newRestrictions.putBoolean(key, value); 1267 1268 updateUserRestrictionsInternalLR(newRestrictions, userId); 1269 } 1270 } 1271 1272 /** 1273 * Optionally updating user restrictions, calculate the effective user restrictions and also 1274 * propagate to other services and system settings. 1275 * 1276 * @param newRestrictions User restrictions to set. 1277 * If null, will not update user restrictions and only does the propagation. 1278 * @param userId target user ID. 1279 */ 1280 @GuardedBy("mRestrictionsLock") 1281 private void updateUserRestrictionsInternalLR( 1282 @Nullable Bundle newRestrictions, int userId) { 1283 1284 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 1285 mAppliedUserRestrictions.get(userId)); 1286 1287 // Update base restrictions. 1288 if (newRestrictions != null) { 1289 // If newRestrictions == the current one, it's probably a bug. 1290 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 1291 1292 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 1293 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 1294 != newRestrictions); 1295 1296 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 1297 mBaseUserRestrictions.put(userId, newRestrictions); 1298 scheduleWriteUser(getUserDataNoChecks(userId)); 1299 } 1300 } 1301 1302 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 1303 1304 mCachedEffectiveUserRestrictions.put(userId, effective); 1305 1306 // Apply the new restrictions. 1307 if (DBG) { 1308 debug("Applying user restrictions: userId=" + userId 1309 + " new=" + effective + " prev=" + prevAppliedRestrictions); 1310 } 1311 1312 if (mAppOpsService != null) { // We skip it until system-ready. 1313 mHandler.post(new Runnable() { 1314 @Override 1315 public void run() { 1316 try { 1317 mAppOpsService.setUserRestrictions(effective, mUserRestriconToken, userId); 1318 } catch (RemoteException e) { 1319 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1320 } 1321 } 1322 }); 1323 } 1324 1325 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1326 1327 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1328 } 1329 1330 private void propagateUserRestrictionsLR(final int userId, 1331 Bundle newRestrictions, Bundle prevRestrictions) { 1332 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1333 // actually, but we still need some kind of synchronization otherwise we might end up 1334 // calling listeners out-of-order, thus "LR". 1335 1336 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1337 return; 1338 } 1339 1340 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1341 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1342 1343 mHandler.post(new Runnable() { 1344 @Override 1345 public void run() { 1346 UserRestrictionsUtils.applyUserRestrictions( 1347 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1348 1349 final UserRestrictionsListener[] listeners; 1350 synchronized (mUserRestrictionsListeners) { 1351 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1352 mUserRestrictionsListeners.toArray(listeners); 1353 } 1354 for (int i = 0; i < listeners.length; i++) { 1355 listeners[i].onUserRestrictionsChanged(userId, 1356 newRestrictionsFinal, prevRestrictionsFinal); 1357 } 1358 } 1359 }); 1360 } 1361 1362 // Package private for the inner class. 1363 void applyUserRestrictionsLR(int userId) { 1364 updateUserRestrictionsInternalLR(null, userId); 1365 } 1366 1367 @GuardedBy("mRestrictionsLock") 1368 // Package private for the inner class. 1369 void applyUserRestrictionsForAllUsersLR() { 1370 if (DBG) { 1371 debug("applyUserRestrictionsForAllUsersLR"); 1372 } 1373 // First, invalidate all cached values. 1374 mCachedEffectiveUserRestrictions.clear(); 1375 1376 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 1377 // it on a handler. 1378 final Runnable r = new Runnable() { 1379 @Override 1380 public void run() { 1381 // Then get the list of running users. 1382 final int[] runningUsers; 1383 try { 1384 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 1385 } catch (RemoteException e) { 1386 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 1387 return; 1388 } 1389 // Then re-calculate the effective restrictions and apply, only for running users. 1390 // It's okay if a new user has started after the getRunningUserIds() call, 1391 // because we'll do the same thing (re-calculate the restrictions and apply) 1392 // when we start a user. 1393 synchronized (mRestrictionsLock) { 1394 for (int i = 0; i < runningUsers.length; i++) { 1395 applyUserRestrictionsLR(runningUsers[i]); 1396 } 1397 } 1398 } 1399 }; 1400 mHandler.post(r); 1401 } 1402 1403 /** 1404 * Check if we've hit the limit of how many users can be created. 1405 */ 1406 private boolean isUserLimitReached() { 1407 int count; 1408 synchronized (mUsersLock) { 1409 count = getAliveUsersExcludingGuestsCountLU(); 1410 } 1411 return count >= UserManager.getMaxSupportedUsers(); 1412 } 1413 1414 @Override 1415 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1416 checkManageUsersPermission("check if more managed profiles can be added."); 1417 if (ActivityManager.isLowRamDeviceStatic()) { 1418 return false; 1419 } 1420 if (!mContext.getPackageManager().hasSystemFeature( 1421 PackageManager.FEATURE_MANAGED_USERS)) { 1422 return false; 1423 } 1424 // Limit number of managed profiles that can be created 1425 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1426 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1427 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1428 return false; 1429 } 1430 synchronized(mUsersLock) { 1431 UserInfo userInfo = getUserInfoLU(userId); 1432 if (!userInfo.canHaveProfile()) { 1433 return false; 1434 } 1435 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1436 - profilesRemovedCount; 1437 // We allow creating a managed profile in the special case where there is only one user. 1438 return usersCountAfterRemoving == 1 1439 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1440 } 1441 } 1442 1443 private int getAliveUsersExcludingGuestsCountLU() { 1444 int aliveUserCount = 0; 1445 final int totalUserCount = mUsers.size(); 1446 // Skip over users being removed 1447 for (int i = 0; i < totalUserCount; i++) { 1448 UserInfo user = mUsers.valueAt(i).info; 1449 if (!mRemovingUserIds.get(user.id) 1450 && !user.isGuest() && !user.partial) { 1451 aliveUserCount++; 1452 } 1453 } 1454 return aliveUserCount; 1455 } 1456 1457 /** 1458 * Enforces that only the system UID or root's UID or apps that have the 1459 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1460 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1461 * permissions can make certain calls to the UserManager. 1462 * 1463 * @param message used as message if SecurityException is thrown 1464 * @throws SecurityException if the caller does not have enough privilege. 1465 */ 1466 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1467 final int uid = Binder.getCallingUid(); 1468 if (uid != Process.SYSTEM_UID && uid != 0 1469 && ActivityManager.checkComponentPermission( 1470 Manifest.permission.MANAGE_USERS, 1471 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1472 && ActivityManager.checkComponentPermission( 1473 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1474 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1475 throw new SecurityException( 1476 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1477 + message); 1478 } 1479 } 1480 1481 /** 1482 * Enforces that only the system UID or root's UID or apps that have the 1483 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1484 * permission can make certain calls to the UserManager. 1485 * 1486 * @param message used as message if SecurityException is thrown 1487 * @throws SecurityException if the caller is not system or root 1488 * @see #hasManageUsersPermission() 1489 */ 1490 private static final void checkManageUsersPermission(String message) { 1491 if (!hasManageUsersPermission()) { 1492 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1493 } 1494 } 1495 1496 /** 1497 * Enforces that only the system UID or root's UID or apps that have the 1498 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} or 1499 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS} 1500 * can make certain calls to the UserManager. 1501 * 1502 * @param message used as message if SecurityException is thrown 1503 * @throws SecurityException if the caller is not system or root 1504 * @see #hasManageOrCreateUsersPermission() 1505 */ 1506 private static final void checkManageOrCreateUsersPermission(String message) { 1507 if (!hasManageOrCreateUsersPermission()) { 1508 throw new SecurityException( 1509 "You either need MANAGE_USERS or CREATE_USERS permission to: " + message); 1510 } 1511 } 1512 1513 /** 1514 * Similar to {@link #checkManageOrCreateUsersPermission(String)} but when the caller is tries 1515 * to create user/profiles other than what is allowed for 1516 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS} permission, then it will only 1517 * allow callers with {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} permission. 1518 */ 1519 private static final void checkManageOrCreateUsersPermission(int creationFlags) { 1520 if ((creationFlags & ~ALLOWED_FLAGS_FOR_CREATE_USERS_PERMISSION) == 0) { 1521 if (!hasManageOrCreateUsersPermission()) { 1522 throw new SecurityException("You either need MANAGE_USERS or CREATE_USERS " 1523 + "permission to create an user with flags: " + creationFlags); 1524 } 1525 } else if (!hasManageUsersPermission()) { 1526 throw new SecurityException("You need MANAGE_USERS permission to create an user " 1527 + " with flags: " + creationFlags); 1528 } 1529 } 1530 1531 /** 1532 * @return whether the calling UID is system UID or root's UID or the calling app has the 1533 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS}. 1534 */ 1535 private static final boolean hasManageUsersPermission() { 1536 final int callingUid = Binder.getCallingUid(); 1537 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1538 || callingUid == Process.ROOT_UID 1539 || ActivityManager.checkComponentPermission( 1540 android.Manifest.permission.MANAGE_USERS, 1541 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1542 } 1543 1544 /** 1545 * @return whether the calling UID is system UID or root's UID or the calling app has the 1546 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} or 1547 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS}. 1548 */ 1549 private static final boolean hasManageOrCreateUsersPermission() { 1550 final int callingUid = Binder.getCallingUid(); 1551 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1552 || callingUid == Process.ROOT_UID 1553 || ActivityManager.checkComponentPermission( 1554 android.Manifest.permission.MANAGE_USERS, 1555 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED 1556 || ActivityManager.checkComponentPermission( 1557 android.Manifest.permission.CREATE_USERS, 1558 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1559 } 1560 1561 /** 1562 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1563 * UserManager. 1564 * 1565 * @param message used as message if SecurityException is thrown 1566 * @throws SecurityException if the caller is not system or root 1567 */ 1568 private static void checkSystemOrRoot(String message) { 1569 final int uid = Binder.getCallingUid(); 1570 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1571 throw new SecurityException("Only system may: " + message); 1572 } 1573 } 1574 1575 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1576 try { 1577 File dir = new File(mUsersDir, Integer.toString(info.id)); 1578 File file = new File(dir, USER_PHOTO_FILENAME); 1579 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1580 if (!dir.exists()) { 1581 dir.mkdir(); 1582 FileUtils.setPermissions( 1583 dir.getPath(), 1584 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1585 -1, -1); 1586 } 1587 FileOutputStream os; 1588 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1589 && tmp.renameTo(file) && SELinux.restorecon(file)) { 1590 info.iconPath = file.getAbsolutePath(); 1591 } 1592 try { 1593 os.close(); 1594 } catch (IOException ioe) { 1595 // What the ... ! 1596 } 1597 tmp.delete(); 1598 } catch (FileNotFoundException e) { 1599 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1600 } 1601 } 1602 1603 /** 1604 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1605 * cache it elsewhere. 1606 * @return the array of user ids. 1607 */ 1608 public int[] getUserIds() { 1609 synchronized (mUsersLock) { 1610 return mUserIds; 1611 } 1612 } 1613 1614 private void readUserListLP() { 1615 if (!mUserListFile.exists()) { 1616 fallbackToSingleUserLP(); 1617 return; 1618 } 1619 FileInputStream fis = null; 1620 AtomicFile userListFile = new AtomicFile(mUserListFile); 1621 try { 1622 fis = userListFile.openRead(); 1623 XmlPullParser parser = Xml.newPullParser(); 1624 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1625 int type; 1626 while ((type = parser.next()) != XmlPullParser.START_TAG 1627 && type != XmlPullParser.END_DOCUMENT) { 1628 // Skip 1629 } 1630 1631 if (type != XmlPullParser.START_TAG) { 1632 Slog.e(LOG_TAG, "Unable to read user list"); 1633 fallbackToSingleUserLP(); 1634 return; 1635 } 1636 1637 mNextSerialNumber = -1; 1638 if (parser.getName().equals(TAG_USERS)) { 1639 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1640 if (lastSerialNumber != null) { 1641 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1642 } 1643 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1644 if (versionNumber != null) { 1645 mUserVersion = Integer.parseInt(versionNumber); 1646 } 1647 } 1648 1649 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1650 1651 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1652 if (type == XmlPullParser.START_TAG) { 1653 final String name = parser.getName(); 1654 if (name.equals(TAG_USER)) { 1655 String id = parser.getAttributeValue(null, ATTR_ID); 1656 1657 UserData userData = readUserLP(Integer.parseInt(id)); 1658 1659 if (userData != null) { 1660 synchronized (mUsersLock) { 1661 mUsers.put(userData.info.id, userData); 1662 if (mNextSerialNumber < 0 1663 || mNextSerialNumber <= userData.info.id) { 1664 mNextSerialNumber = userData.info.id + 1; 1665 } 1666 } 1667 } 1668 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1669 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1670 && type != XmlPullParser.END_TAG) { 1671 if (type == XmlPullParser.START_TAG) { 1672 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1673 synchronized (mGuestRestrictions) { 1674 UserRestrictionsUtils 1675 .readRestrictions(parser, mGuestRestrictions); 1676 } 1677 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1678 ) { 1679 UserRestrictionsUtils.readRestrictions(parser, 1680 newDevicePolicyGlobalUserRestrictions); 1681 } 1682 break; 1683 } 1684 } 1685 } else if (name.equals(TAG_GLOBAL_RESTRICTION_OWNER_ID)) { 1686 String ownerUserId = parser.getAttributeValue(null, ATTR_ID); 1687 if (ownerUserId != null) { 1688 mGlobalRestrictionOwnerUserId = Integer.parseInt(ownerUserId); 1689 } 1690 } 1691 } 1692 } 1693 synchronized (mRestrictionsLock) { 1694 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1695 } 1696 updateUserIds(); 1697 upgradeIfNecessaryLP(); 1698 } catch (IOException | XmlPullParserException e) { 1699 fallbackToSingleUserLP(); 1700 } finally { 1701 IoUtils.closeQuietly(fis); 1702 } 1703 } 1704 1705 /** 1706 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1707 */ 1708 private void upgradeIfNecessaryLP() { 1709 final int originalVersion = mUserVersion; 1710 int userVersion = mUserVersion; 1711 if (userVersion < 1) { 1712 // Assign a proper name for the owner, if not initialized correctly before 1713 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1714 if ("Primary".equals(userData.info.name)) { 1715 userData.info.name = 1716 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1717 scheduleWriteUser(userData); 1718 } 1719 userVersion = 1; 1720 } 1721 1722 if (userVersion < 2) { 1723 // Owner should be marked as initialized 1724 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1725 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1726 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1727 scheduleWriteUser(userData); 1728 } 1729 userVersion = 2; 1730 } 1731 1732 1733 if (userVersion < 4) { 1734 userVersion = 4; 1735 } 1736 1737 if (userVersion < 5) { 1738 initDefaultGuestRestrictions(); 1739 userVersion = 5; 1740 } 1741 1742 if (userVersion < 6) { 1743 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1744 synchronized (mUsersLock) { 1745 for (int i = 0; i < mUsers.size(); i++) { 1746 UserData userData = mUsers.valueAt(i); 1747 // In non-split mode, only user 0 can have restricted profiles 1748 if (!splitSystemUser && userData.info.isRestricted() 1749 && (userData.info.restrictedProfileParentId 1750 == UserInfo.NO_PROFILE_GROUP_ID)) { 1751 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1752 scheduleWriteUser(userData); 1753 } 1754 } 1755 } 1756 userVersion = 6; 1757 } 1758 1759 if (userVersion < USER_VERSION) { 1760 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1761 + USER_VERSION); 1762 } else { 1763 mUserVersion = userVersion; 1764 1765 if (originalVersion < mUserVersion) { 1766 writeUserListLP(); 1767 } 1768 } 1769 } 1770 1771 private void fallbackToSingleUserLP() { 1772 int flags = UserInfo.FLAG_INITIALIZED; 1773 // In split system user mode, the admin and primary flags are assigned to the first human 1774 // user. 1775 if (!UserManager.isSplitSystemUser()) { 1776 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1777 } 1778 // Create the system user 1779 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, null, null, flags); 1780 UserData userData = new UserData(); 1781 userData.info = system; 1782 synchronized (mUsersLock) { 1783 mUsers.put(system.id, userData); 1784 } 1785 mNextSerialNumber = MIN_USER_ID; 1786 mUserVersion = USER_VERSION; 1787 1788 Bundle restrictions = new Bundle(); 1789 synchronized (mRestrictionsLock) { 1790 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1791 } 1792 1793 updateUserIds(); 1794 initDefaultGuestRestrictions(); 1795 1796 writeUserLP(userData); 1797 writeUserListLP(); 1798 } 1799 1800 private String getOwnerName() { 1801 return mContext.getResources().getString(com.android.internal.R.string.owner_name); 1802 } 1803 1804 private void scheduleWriteUser(UserData UserData) { 1805 if (DBG) { 1806 debug("scheduleWriteUser"); 1807 } 1808 // No need to wrap it within a lock -- worst case, we'll just post the same message 1809 // twice. 1810 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1811 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1812 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1813 } 1814 } 1815 1816 /* 1817 * Writes the user file in this format: 1818 * 1819 * <user flags="20039023" id="0"> 1820 * <name>Primary</name> 1821 * </user> 1822 */ 1823 private void writeUserLP(UserData userData) { 1824 if (DBG) { 1825 debug("writeUserLP " + userData); 1826 } 1827 FileOutputStream fos = null; 1828 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1829 try { 1830 fos = userFile.startWrite(); 1831 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1832 1833 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1834 final XmlSerializer serializer = new FastXmlSerializer(); 1835 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1836 serializer.startDocument(null, true); 1837 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1838 1839 final UserInfo userInfo = userData.info; 1840 serializer.startTag(null, TAG_USER); 1841 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1842 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1843 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1844 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1845 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1846 Long.toString(userInfo.lastLoggedInTime)); 1847 if (userInfo.lastLoggedInFingerprint != null) { 1848 serializer.attribute(null, ATTR_LAST_LOGGED_IN_FINGERPRINT, 1849 userInfo.lastLoggedInFingerprint); 1850 } 1851 if (userInfo.iconPath != null) { 1852 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1853 } 1854 if (userInfo.partial) { 1855 serializer.attribute(null, ATTR_PARTIAL, "true"); 1856 } 1857 if (userInfo.guestToRemove) { 1858 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1859 } 1860 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1861 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1862 Integer.toString(userInfo.profileGroupId)); 1863 } 1864 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1865 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1866 Integer.toString(userInfo.restrictedProfileParentId)); 1867 } 1868 // Write seed data 1869 if (userData.persistSeedData) { 1870 if (userData.seedAccountName != null) { 1871 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 1872 } 1873 if (userData.seedAccountType != null) { 1874 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 1875 } 1876 } 1877 if (userInfo.name != null) { 1878 serializer.startTag(null, TAG_NAME); 1879 serializer.text(userInfo.name); 1880 serializer.endTag(null, TAG_NAME); 1881 } 1882 synchronized (mRestrictionsLock) { 1883 UserRestrictionsUtils.writeRestrictions(serializer, 1884 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1885 UserRestrictionsUtils.writeRestrictions(serializer, 1886 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1887 TAG_DEVICE_POLICY_RESTRICTIONS); 1888 } 1889 1890 if (userData.account != null) { 1891 serializer.startTag(null, TAG_ACCOUNT); 1892 serializer.text(userData.account); 1893 serializer.endTag(null, TAG_ACCOUNT); 1894 } 1895 1896 if (userData.persistSeedData && userData.seedAccountOptions != null) { 1897 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1898 userData.seedAccountOptions.saveToXml(serializer); 1899 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1900 } 1901 serializer.endTag(null, TAG_USER); 1902 1903 serializer.endDocument(); 1904 userFile.finishWrite(fos); 1905 } catch (Exception ioe) { 1906 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id, ioe); 1907 userFile.failWrite(fos); 1908 } 1909 } 1910 1911 /* 1912 * Writes the user list file in this format: 1913 * 1914 * <users nextSerialNumber="3"> 1915 * <user id="0"></user> 1916 * <user id="2"></user> 1917 * </users> 1918 */ 1919 private void writeUserListLP() { 1920 if (DBG) { 1921 debug("writeUserList"); 1922 } 1923 FileOutputStream fos = null; 1924 AtomicFile userListFile = new AtomicFile(mUserListFile); 1925 try { 1926 fos = userListFile.startWrite(); 1927 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1928 1929 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1930 final XmlSerializer serializer = new FastXmlSerializer(); 1931 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1932 serializer.startDocument(null, true); 1933 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1934 1935 serializer.startTag(null, TAG_USERS); 1936 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1937 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1938 1939 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1940 synchronized (mGuestRestrictions) { 1941 UserRestrictionsUtils 1942 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1943 } 1944 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1945 synchronized (mRestrictionsLock) { 1946 UserRestrictionsUtils.writeRestrictions(serializer, 1947 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1948 } 1949 serializer.startTag(null, TAG_GLOBAL_RESTRICTION_OWNER_ID); 1950 serializer.attribute(null, ATTR_ID, Integer.toString(mGlobalRestrictionOwnerUserId)); 1951 serializer.endTag(null, TAG_GLOBAL_RESTRICTION_OWNER_ID); 1952 int[] userIdsToWrite; 1953 synchronized (mUsersLock) { 1954 userIdsToWrite = new int[mUsers.size()]; 1955 for (int i = 0; i < userIdsToWrite.length; i++) { 1956 UserInfo user = mUsers.valueAt(i).info; 1957 userIdsToWrite[i] = user.id; 1958 } 1959 } 1960 for (int id : userIdsToWrite) { 1961 serializer.startTag(null, TAG_USER); 1962 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1963 serializer.endTag(null, TAG_USER); 1964 } 1965 1966 serializer.endTag(null, TAG_USERS); 1967 1968 serializer.endDocument(); 1969 userListFile.finishWrite(fos); 1970 } catch (Exception e) { 1971 userListFile.failWrite(fos); 1972 Slog.e(LOG_TAG, "Error writing user list"); 1973 } 1974 } 1975 1976 private UserData readUserLP(int id) { 1977 int flags = 0; 1978 int serialNumber = id; 1979 String name = null; 1980 String account = null; 1981 String iconPath = null; 1982 long creationTime = 0L; 1983 long lastLoggedInTime = 0L; 1984 String lastLoggedInFingerprint = null; 1985 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 1986 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 1987 boolean partial = false; 1988 boolean guestToRemove = false; 1989 boolean persistSeedData = false; 1990 String seedAccountName = null; 1991 String seedAccountType = null; 1992 PersistableBundle seedAccountOptions = null; 1993 Bundle baseRestrictions = new Bundle(); 1994 Bundle localRestrictions = new Bundle(); 1995 1996 FileInputStream fis = null; 1997 try { 1998 AtomicFile userFile = 1999 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 2000 fis = userFile.openRead(); 2001 XmlPullParser parser = Xml.newPullParser(); 2002 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2003 int type; 2004 while ((type = parser.next()) != XmlPullParser.START_TAG 2005 && type != XmlPullParser.END_DOCUMENT) { 2006 // Skip 2007 } 2008 2009 if (type != XmlPullParser.START_TAG) { 2010 Slog.e(LOG_TAG, "Unable to read user " + id); 2011 return null; 2012 } 2013 2014 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 2015 int storedId = readIntAttribute(parser, ATTR_ID, -1); 2016 if (storedId != id) { 2017 Slog.e(LOG_TAG, "User id does not match the file name"); 2018 return null; 2019 } 2020 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 2021 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 2022 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 2023 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 2024 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 2025 lastLoggedInFingerprint = parser.getAttributeValue(null, 2026 ATTR_LAST_LOGGED_IN_FINGERPRINT); 2027 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 2028 UserInfo.NO_PROFILE_GROUP_ID); 2029 restrictedProfileParentId = readIntAttribute(parser, 2030 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 2031 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 2032 if ("true".equals(valueString)) { 2033 partial = true; 2034 } 2035 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 2036 if ("true".equals(valueString)) { 2037 guestToRemove = true; 2038 } 2039 2040 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 2041 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 2042 if (seedAccountName != null || seedAccountType != null) { 2043 persistSeedData = true; 2044 } 2045 2046 int outerDepth = parser.getDepth(); 2047 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 2048 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2049 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2050 continue; 2051 } 2052 String tag = parser.getName(); 2053 if (TAG_NAME.equals(tag)) { 2054 type = parser.next(); 2055 if (type == XmlPullParser.TEXT) { 2056 name = parser.getText(); 2057 } 2058 } else if (TAG_RESTRICTIONS.equals(tag)) { 2059 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 2060 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 2061 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 2062 } else if (TAG_ACCOUNT.equals(tag)) { 2063 type = parser.next(); 2064 if (type == XmlPullParser.TEXT) { 2065 account = parser.getText(); 2066 } 2067 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 2068 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 2069 persistSeedData = true; 2070 } 2071 } 2072 } 2073 2074 // Create the UserInfo object that gets passed around 2075 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 2076 userInfo.serialNumber = serialNumber; 2077 userInfo.creationTime = creationTime; 2078 userInfo.lastLoggedInTime = lastLoggedInTime; 2079 userInfo.lastLoggedInFingerprint = lastLoggedInFingerprint; 2080 userInfo.partial = partial; 2081 userInfo.guestToRemove = guestToRemove; 2082 userInfo.profileGroupId = profileGroupId; 2083 userInfo.restrictedProfileParentId = restrictedProfileParentId; 2084 2085 // Create the UserData object that's internal to this class 2086 UserData userData = new UserData(); 2087 userData.info = userInfo; 2088 userData.account = account; 2089 userData.seedAccountName = seedAccountName; 2090 userData.seedAccountType = seedAccountType; 2091 userData.persistSeedData = persistSeedData; 2092 userData.seedAccountOptions = seedAccountOptions; 2093 2094 synchronized (mRestrictionsLock) { 2095 mBaseUserRestrictions.put(id, baseRestrictions); 2096 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 2097 } 2098 return userData; 2099 } catch (IOException ioe) { 2100 } catch (XmlPullParserException pe) { 2101 } finally { 2102 if (fis != null) { 2103 try { 2104 fis.close(); 2105 } catch (IOException e) { 2106 } 2107 } 2108 } 2109 return null; 2110 } 2111 2112 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 2113 String valueString = parser.getAttributeValue(null, attr); 2114 if (valueString == null) return defaultValue; 2115 try { 2116 return Integer.parseInt(valueString); 2117 } catch (NumberFormatException nfe) { 2118 return defaultValue; 2119 } 2120 } 2121 2122 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 2123 String valueString = parser.getAttributeValue(null, attr); 2124 if (valueString == null) return defaultValue; 2125 try { 2126 return Long.parseLong(valueString); 2127 } catch (NumberFormatException nfe) { 2128 return defaultValue; 2129 } 2130 } 2131 2132 /** 2133 * Removes the app restrictions file for a specific package and user id, if it exists. 2134 */ 2135 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 2136 synchronized (mPackagesLock) { 2137 File dir = Environment.getUserSystemDirectory(userId); 2138 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 2139 if (resFile.exists()) { 2140 resFile.delete(); 2141 } 2142 } 2143 } 2144 2145 @Override 2146 public UserInfo createProfileForUser(String name, int flags, int userId) { 2147 checkManageOrCreateUsersPermission(flags); 2148 return createUserInternal(name, flags, userId); 2149 } 2150 2151 @Override 2152 public UserInfo createUser(String name, int flags) { 2153 checkManageOrCreateUsersPermission(flags); 2154 return createUserInternal(name, flags, UserHandle.USER_NULL); 2155 } 2156 2157 private UserInfo createUserInternal(String name, int flags, int parentId) { 2158 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 2159 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 2160 return null; 2161 } 2162 return createUserInternalUnchecked(name, flags, parentId); 2163 } 2164 2165 private UserInfo createUserInternalUnchecked(String name, int flags, int parentId) { 2166 if (ActivityManager.isLowRamDeviceStatic()) { 2167 return null; 2168 } 2169 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 2170 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 2171 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 2172 final boolean isDemo = (flags & UserInfo.FLAG_DEMO) != 0; 2173 final long ident = Binder.clearCallingIdentity(); 2174 UserInfo userInfo; 2175 UserData userData; 2176 final int userId; 2177 try { 2178 synchronized (mPackagesLock) { 2179 UserData parent = null; 2180 if (parentId != UserHandle.USER_NULL) { 2181 synchronized (mUsersLock) { 2182 parent = getUserDataLU(parentId); 2183 } 2184 if (parent == null) return null; 2185 } 2186 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 2187 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 2188 return null; 2189 } 2190 if (!isGuest && !isManagedProfile && !isDemo && isUserLimitReached()) { 2191 // If we're not adding a guest/demo user or a managed profile and the limit has 2192 // been reached, cannot add a user. 2193 return null; 2194 } 2195 // If we're adding a guest and there already exists one, bail. 2196 if (isGuest && findCurrentGuestUser() != null) { 2197 return null; 2198 } 2199 // In legacy mode, restricted profile's parent can only be the owner user 2200 if (isRestricted && !UserManager.isSplitSystemUser() 2201 && (parentId != UserHandle.USER_SYSTEM)) { 2202 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 2203 return null; 2204 } 2205 if (isRestricted && UserManager.isSplitSystemUser()) { 2206 if (parent == null) { 2207 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 2208 + "specified"); 2209 return null; 2210 } 2211 if (!parent.info.canHaveProfile()) { 2212 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 2213 + "created for the specified parent user id " + parentId); 2214 return null; 2215 } 2216 } 2217 if (!UserManager.isSplitSystemUser() && (flags & UserInfo.FLAG_EPHEMERAL) != 0 2218 && (flags & UserInfo.FLAG_DEMO) == 0) { 2219 Log.e(LOG_TAG, 2220 "Ephemeral users are supported on split-system-user systems only."); 2221 return null; 2222 } 2223 // In split system user mode, we assign the first human user the primary flag. 2224 // And if there is no device owner, we also assign the admin flag to primary user. 2225 if (UserManager.isSplitSystemUser() 2226 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 2227 flags |= UserInfo.FLAG_PRIMARY; 2228 synchronized (mUsersLock) { 2229 if (!mIsDeviceManaged) { 2230 flags |= UserInfo.FLAG_ADMIN; 2231 } 2232 } 2233 } 2234 2235 userId = getNextAvailableId(); 2236 Environment.getUserSystemDirectory(userId).mkdirs(); 2237 boolean ephemeralGuests = Resources.getSystem() 2238 .getBoolean(com.android.internal.R.bool.config_guestUserEphemeral); 2239 2240 synchronized (mUsersLock) { 2241 // Add ephemeral flag to guests/users if required. Also inherit it from parent. 2242 if ((isGuest && ephemeralGuests) || mForceEphemeralUsers 2243 || (parent != null && parent.info.isEphemeral())) { 2244 flags |= UserInfo.FLAG_EPHEMERAL; 2245 } 2246 2247 userInfo = new UserInfo(userId, name, null, flags); 2248 userInfo.serialNumber = mNextSerialNumber++; 2249 long now = System.currentTimeMillis(); 2250 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 2251 userInfo.partial = true; 2252 userInfo.lastLoggedInFingerprint = Build.FINGERPRINT; 2253 userData = new UserData(); 2254 userData.info = userInfo; 2255 mUsers.put(userId, userData); 2256 } 2257 writeUserLP(userData); 2258 writeUserListLP(); 2259 if (parent != null) { 2260 if (isManagedProfile) { 2261 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 2262 parent.info.profileGroupId = parent.info.id; 2263 writeUserLP(parent); 2264 } 2265 userInfo.profileGroupId = parent.info.profileGroupId; 2266 } else if (isRestricted) { 2267 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 2268 parent.info.restrictedProfileParentId = parent.info.id; 2269 writeUserLP(parent); 2270 } 2271 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 2272 } 2273 } 2274 } 2275 final StorageManager storage = mContext.getSystemService(StorageManager.class); 2276 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 2277 mPm.prepareUserData(userId, userInfo.serialNumber, 2278 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 2279 mPm.createNewUser(userId); 2280 userInfo.partial = false; 2281 synchronized (mPackagesLock) { 2282 writeUserLP(userData); 2283 } 2284 updateUserIds(); 2285 Bundle restrictions = new Bundle(); 2286 if (isGuest) { 2287 synchronized (mGuestRestrictions) { 2288 restrictions.putAll(mGuestRestrictions); 2289 } 2290 } 2291 synchronized (mRestrictionsLock) { 2292 mBaseUserRestrictions.append(userId, restrictions); 2293 } 2294 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 2295 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 2296 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 2297 android.Manifest.permission.MANAGE_USERS); 2298 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 2299 } finally { 2300 Binder.restoreCallingIdentity(ident); 2301 } 2302 return userInfo; 2303 } 2304 2305 /** 2306 * @hide 2307 */ 2308 @Override 2309 public UserInfo createRestrictedProfile(String name, int parentUserId) { 2310 checkManageOrCreateUsersPermission("setupRestrictedProfile"); 2311 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 2312 if (user == null) { 2313 return null; 2314 } 2315 long identity = Binder.clearCallingIdentity(); 2316 try { 2317 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 2318 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 2319 // the putIntForUser() will fail. 2320 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 2321 android.provider.Settings.Secure.LOCATION_MODE, 2322 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 2323 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 2324 } finally { 2325 Binder.restoreCallingIdentity(identity); 2326 } 2327 return user; 2328 } 2329 2330 /** 2331 * Find the current guest user. If the Guest user is partial, 2332 * then do not include it in the results as it is about to die. 2333 */ 2334 private UserInfo findCurrentGuestUser() { 2335 synchronized (mUsersLock) { 2336 final int size = mUsers.size(); 2337 for (int i = 0; i < size; i++) { 2338 final UserInfo user = mUsers.valueAt(i).info; 2339 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 2340 return user; 2341 } 2342 } 2343 } 2344 return null; 2345 } 2346 2347 /** 2348 * Mark this guest user for deletion to allow us to create another guest 2349 * and switch to that user before actually removing this guest. 2350 * @param userHandle the userid of the current guest 2351 * @return whether the user could be marked for deletion 2352 */ 2353 @Override 2354 public boolean markGuestForDeletion(int userHandle) { 2355 checkManageUsersPermission("Only the system can remove users"); 2356 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2357 UserManager.DISALLOW_REMOVE_USER, false)) { 2358 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2359 return false; 2360 } 2361 2362 long ident = Binder.clearCallingIdentity(); 2363 try { 2364 final UserData userData; 2365 synchronized (mPackagesLock) { 2366 synchronized (mUsersLock) { 2367 userData = mUsers.get(userHandle); 2368 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2369 return false; 2370 } 2371 } 2372 if (!userData.info.isGuest()) { 2373 return false; 2374 } 2375 // We set this to a guest user that is to be removed. This is a temporary state 2376 // where we are allowed to add new Guest users, even if this one is still not 2377 // removed. This user will still show up in getUserInfo() calls. 2378 // If we don't get around to removing this Guest user, it will be purged on next 2379 // startup. 2380 userData.info.guestToRemove = true; 2381 // Mark it as disabled, so that it isn't returned any more when 2382 // profiles are queried. 2383 userData.info.flags |= UserInfo.FLAG_DISABLED; 2384 writeUserLP(userData); 2385 } 2386 } finally { 2387 Binder.restoreCallingIdentity(ident); 2388 } 2389 return true; 2390 } 2391 2392 /** 2393 * Removes a user and all data directories created for that user. This method should be called 2394 * after the user's processes have been terminated. 2395 * @param userHandle the user's id 2396 */ 2397 @Override 2398 public boolean removeUser(int userHandle) { 2399 checkManageOrCreateUsersPermission("Only the system can remove users"); 2400 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2401 UserManager.DISALLOW_REMOVE_USER, false)) { 2402 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2403 return false; 2404 } 2405 2406 long ident = Binder.clearCallingIdentity(); 2407 try { 2408 final UserData userData; 2409 int currentUser = ActivityManager.getCurrentUser(); 2410 if (currentUser == userHandle) { 2411 Log.w(LOG_TAG, "Current user cannot be removed"); 2412 return false; 2413 } 2414 synchronized (mPackagesLock) { 2415 synchronized (mUsersLock) { 2416 userData = mUsers.get(userHandle); 2417 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2418 return false; 2419 } 2420 2421 // We remember deleted user IDs to prevent them from being 2422 // reused during the current boot; they can still be reused 2423 // after a reboot. 2424 mRemovingUserIds.put(userHandle, true); 2425 } 2426 2427 try { 2428 mAppOpsService.removeUser(userHandle); 2429 } catch (RemoteException e) { 2430 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2431 } 2432 // Set this to a partially created user, so that the user will be purged 2433 // on next startup, in case the runtime stops now before stopping and 2434 // removing the user completely. 2435 userData.info.partial = true; 2436 // Mark it as disabled, so that it isn't returned any more when 2437 // profiles are queried. 2438 userData.info.flags |= UserInfo.FLAG_DISABLED; 2439 writeUserLP(userData); 2440 } 2441 2442 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2443 && userData.info.isManagedProfile()) { 2444 // Send broadcast to notify system that the user removed was a 2445 // managed user. 2446 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2447 } 2448 2449 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2450 int res; 2451 try { 2452 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 2453 new IStopUserCallback.Stub() { 2454 @Override 2455 public void userStopped(int userId) { 2456 finishRemoveUser(userId); 2457 } 2458 @Override 2459 public void userStopAborted(int userId) { 2460 } 2461 }); 2462 } catch (RemoteException e) { 2463 return false; 2464 } 2465 return res == ActivityManager.USER_OP_SUCCESS; 2466 } finally { 2467 Binder.restoreCallingIdentity(ident); 2468 } 2469 } 2470 2471 void finishRemoveUser(final int userHandle) { 2472 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2473 // Let other services shutdown any activity and clean up their state before completely 2474 // wiping the user's system directory and removing from the user list 2475 long ident = Binder.clearCallingIdentity(); 2476 try { 2477 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2478 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2479 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2480 android.Manifest.permission.MANAGE_USERS, 2481 2482 new BroadcastReceiver() { 2483 @Override 2484 public void onReceive(Context context, Intent intent) { 2485 if (DBG) { 2486 Slog.i(LOG_TAG, 2487 "USER_REMOVED broadcast sent, cleaning up user data " 2488 + userHandle); 2489 } 2490 new Thread() { 2491 @Override 2492 public void run() { 2493 // Clean up any ActivityManager state 2494 LocalServices.getService(ActivityManagerInternal.class) 2495 .onUserRemoved(userHandle); 2496 removeUserState(userHandle); 2497 } 2498 }.start(); 2499 } 2500 }, 2501 2502 null, Activity.RESULT_OK, null, null); 2503 } finally { 2504 Binder.restoreCallingIdentity(ident); 2505 } 2506 } 2507 2508 private void removeUserState(final int userHandle) { 2509 try { 2510 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2511 } catch (IllegalStateException e) { 2512 // This may be simply because the user was partially created. 2513 Slog.i(LOG_TAG, 2514 "Destroying key for user " + userHandle + " failed, continuing anyway", e); 2515 } 2516 2517 // Cleanup gatekeeper secure user id 2518 try { 2519 final IGateKeeperService gk = GateKeeper.getService(); 2520 if (gk != null) { 2521 gk.clearSecureUserId(userHandle); 2522 } 2523 } catch (Exception ex) { 2524 Slog.w(LOG_TAG, "unable to clear GK secure user id"); 2525 } 2526 2527 // Cleanup package manager settings 2528 mPm.cleanUpUser(this, userHandle); 2529 2530 // Clean up all data before removing metadata 2531 mPm.destroyUserData(userHandle, 2532 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 2533 2534 // Remove this user from the list 2535 synchronized (mUsersLock) { 2536 mUsers.remove(userHandle); 2537 mIsUserManaged.delete(userHandle); 2538 } 2539 synchronized (mUserStates) { 2540 mUserStates.delete(userHandle); 2541 } 2542 synchronized (mRestrictionsLock) { 2543 mBaseUserRestrictions.remove(userHandle); 2544 mAppliedUserRestrictions.remove(userHandle); 2545 mCachedEffectiveUserRestrictions.remove(userHandle); 2546 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2547 } 2548 // Update the user list 2549 synchronized (mPackagesLock) { 2550 writeUserListLP(); 2551 } 2552 // Remove user file 2553 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2554 userFile.delete(); 2555 updateUserIds(); 2556 } 2557 2558 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2559 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2560 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2561 Intent.FLAG_RECEIVER_FOREGROUND); 2562 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2563 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2564 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2565 } 2566 2567 @Override 2568 public Bundle getApplicationRestrictions(String packageName) { 2569 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2570 } 2571 2572 @Override 2573 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2574 if (UserHandle.getCallingUserId() != userId 2575 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2576 checkSystemOrRoot("get application restrictions for other users/apps"); 2577 } 2578 synchronized (mPackagesLock) { 2579 // Read the restrictions from XML 2580 return readApplicationRestrictionsLP(packageName, userId); 2581 } 2582 } 2583 2584 @Override 2585 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2586 int userId) { 2587 checkSystemOrRoot("set application restrictions"); 2588 if (restrictions != null) { 2589 restrictions.setDefusable(true); 2590 } 2591 synchronized (mPackagesLock) { 2592 if (restrictions == null || restrictions.isEmpty()) { 2593 cleanAppRestrictionsForPackage(packageName, userId); 2594 } else { 2595 // Write the restrictions to XML 2596 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2597 } 2598 } 2599 2600 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2601 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2602 changeIntent.setPackage(packageName); 2603 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2604 mContext.sendBroadcastAsUser(changeIntent, UserHandle.of(userId)); 2605 } 2606 2607 private int getUidForPackage(String packageName) { 2608 long ident = Binder.clearCallingIdentity(); 2609 try { 2610 return mContext.getPackageManager().getApplicationInfo(packageName, 2611 PackageManager.MATCH_UNINSTALLED_PACKAGES).uid; 2612 } catch (NameNotFoundException nnfe) { 2613 return -1; 2614 } finally { 2615 Binder.restoreCallingIdentity(ident); 2616 } 2617 } 2618 2619 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2620 AtomicFile restrictionsFile = 2621 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2622 packageToRestrictionsFileName(packageName))); 2623 return readApplicationRestrictionsLP(restrictionsFile); 2624 } 2625 2626 @VisibleForTesting 2627 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2628 final Bundle restrictions = new Bundle(); 2629 final ArrayList<String> values = new ArrayList<>(); 2630 if (!restrictionsFile.getBaseFile().exists()) { 2631 return restrictions; 2632 } 2633 2634 FileInputStream fis = null; 2635 try { 2636 fis = restrictionsFile.openRead(); 2637 XmlPullParser parser = Xml.newPullParser(); 2638 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2639 XmlUtils.nextElement(parser); 2640 if (parser.getEventType() != XmlPullParser.START_TAG) { 2641 Slog.e(LOG_TAG, "Unable to read restrictions file " 2642 + restrictionsFile.getBaseFile()); 2643 return restrictions; 2644 } 2645 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2646 readEntry(restrictions, values, parser); 2647 } 2648 } catch (IOException|XmlPullParserException e) { 2649 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2650 } finally { 2651 IoUtils.closeQuietly(fis); 2652 } 2653 return restrictions; 2654 } 2655 2656 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2657 XmlPullParser parser) throws XmlPullParserException, IOException { 2658 int type = parser.getEventType(); 2659 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2660 String key = parser.getAttributeValue(null, ATTR_KEY); 2661 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2662 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2663 if (multiple != null) { 2664 values.clear(); 2665 int count = Integer.parseInt(multiple); 2666 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2667 if (type == XmlPullParser.START_TAG 2668 && parser.getName().equals(TAG_VALUE)) { 2669 values.add(parser.nextText().trim()); 2670 count--; 2671 } 2672 } 2673 String [] valueStrings = new String[values.size()]; 2674 values.toArray(valueStrings); 2675 restrictions.putStringArray(key, valueStrings); 2676 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2677 restrictions.putBundle(key, readBundleEntry(parser, values)); 2678 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2679 final int outerDepth = parser.getDepth(); 2680 ArrayList<Bundle> bundleList = new ArrayList<>(); 2681 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2682 Bundle childBundle = readBundleEntry(parser, values); 2683 bundleList.add(childBundle); 2684 } 2685 restrictions.putParcelableArray(key, 2686 bundleList.toArray(new Bundle[bundleList.size()])); 2687 } else { 2688 String value = parser.nextText().trim(); 2689 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2690 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2691 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2692 restrictions.putInt(key, Integer.parseInt(value)); 2693 } else { 2694 restrictions.putString(key, value); 2695 } 2696 } 2697 } 2698 } 2699 2700 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2701 throws IOException, XmlPullParserException { 2702 Bundle childBundle = new Bundle(); 2703 final int outerDepth = parser.getDepth(); 2704 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2705 readEntry(childBundle, values, parser); 2706 } 2707 return childBundle; 2708 } 2709 2710 private void writeApplicationRestrictionsLP(String packageName, 2711 Bundle restrictions, int userId) { 2712 AtomicFile restrictionsFile = new AtomicFile( 2713 new File(Environment.getUserSystemDirectory(userId), 2714 packageToRestrictionsFileName(packageName))); 2715 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2716 } 2717 2718 @VisibleForTesting 2719 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2720 FileOutputStream fos = null; 2721 try { 2722 fos = restrictionsFile.startWrite(); 2723 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2724 2725 final XmlSerializer serializer = new FastXmlSerializer(); 2726 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2727 serializer.startDocument(null, true); 2728 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2729 2730 serializer.startTag(null, TAG_RESTRICTIONS); 2731 writeBundle(restrictions, serializer); 2732 serializer.endTag(null, TAG_RESTRICTIONS); 2733 2734 serializer.endDocument(); 2735 restrictionsFile.finishWrite(fos); 2736 } catch (Exception e) { 2737 restrictionsFile.failWrite(fos); 2738 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2739 } 2740 } 2741 2742 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2743 throws IOException { 2744 for (String key : restrictions.keySet()) { 2745 Object value = restrictions.get(key); 2746 serializer.startTag(null, TAG_ENTRY); 2747 serializer.attribute(null, ATTR_KEY, key); 2748 2749 if (value instanceof Boolean) { 2750 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2751 serializer.text(value.toString()); 2752 } else if (value instanceof Integer) { 2753 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2754 serializer.text(value.toString()); 2755 } else if (value == null || value instanceof String) { 2756 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2757 serializer.text(value != null ? (String) value : ""); 2758 } else if (value instanceof Bundle) { 2759 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2760 writeBundle((Bundle) value, serializer); 2761 } else if (value instanceof Parcelable[]) { 2762 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2763 Parcelable[] array = (Parcelable[]) value; 2764 for (Parcelable parcelable : array) { 2765 if (!(parcelable instanceof Bundle)) { 2766 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2767 } 2768 serializer.startTag(null, TAG_ENTRY); 2769 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2770 writeBundle((Bundle) parcelable, serializer); 2771 serializer.endTag(null, TAG_ENTRY); 2772 } 2773 } else { 2774 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2775 String[] values = (String[]) value; 2776 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2777 for (String choice : values) { 2778 serializer.startTag(null, TAG_VALUE); 2779 serializer.text(choice != null ? choice : ""); 2780 serializer.endTag(null, TAG_VALUE); 2781 } 2782 } 2783 serializer.endTag(null, TAG_ENTRY); 2784 } 2785 } 2786 2787 @Override 2788 public int getUserSerialNumber(int userHandle) { 2789 synchronized (mUsersLock) { 2790 if (!exists(userHandle)) return -1; 2791 return getUserInfoLU(userHandle).serialNumber; 2792 } 2793 } 2794 2795 @Override 2796 public int getUserHandle(int userSerialNumber) { 2797 synchronized (mUsersLock) { 2798 for (int userId : mUserIds) { 2799 UserInfo info = getUserInfoLU(userId); 2800 if (info != null && info.serialNumber == userSerialNumber) return userId; 2801 } 2802 // Not found 2803 return -1; 2804 } 2805 } 2806 2807 @Override 2808 public long getUserCreationTime(int userHandle) { 2809 int callingUserId = UserHandle.getCallingUserId(); 2810 UserInfo userInfo = null; 2811 synchronized (mUsersLock) { 2812 if (callingUserId == userHandle) { 2813 userInfo = getUserInfoLU(userHandle); 2814 } else { 2815 UserInfo parent = getProfileParentLU(userHandle); 2816 if (parent != null && parent.id == callingUserId) { 2817 userInfo = getUserInfoLU(userHandle); 2818 } 2819 } 2820 } 2821 if (userInfo == null) { 2822 throw new SecurityException("userHandle can only be the calling user or a managed " 2823 + "profile associated with this user"); 2824 } 2825 return userInfo.creationTime; 2826 } 2827 2828 /** 2829 * Caches the list of user ids in an array, adjusting the array size when necessary. 2830 */ 2831 private void updateUserIds() { 2832 int num = 0; 2833 synchronized (mUsersLock) { 2834 final int userSize = mUsers.size(); 2835 for (int i = 0; i < userSize; i++) { 2836 if (!mUsers.valueAt(i).info.partial) { 2837 num++; 2838 } 2839 } 2840 final int[] newUsers = new int[num]; 2841 int n = 0; 2842 for (int i = 0; i < userSize; i++) { 2843 if (!mUsers.valueAt(i).info.partial) { 2844 newUsers[n++] = mUsers.keyAt(i); 2845 } 2846 } 2847 mUserIds = newUsers; 2848 } 2849 } 2850 2851 /** 2852 * Called right before a user is started. This gives us a chance to prepare 2853 * app storage and apply any user restrictions. 2854 */ 2855 public void onBeforeStartUser(int userId) { 2856 final int userSerial = getUserSerialNumber(userId); 2857 mPm.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_DE); 2858 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_DE); 2859 2860 if (userId != UserHandle.USER_SYSTEM) { 2861 synchronized (mRestrictionsLock) { 2862 applyUserRestrictionsLR(userId); 2863 } 2864 UserInfo userInfo = getUserInfoNoChecks(userId); 2865 if (userInfo != null && !userInfo.isInitialized()) { 2866 mPm.onBeforeUserStartUninitialized(userId); 2867 } 2868 } 2869 2870 maybeInitializeDemoMode(userId); 2871 } 2872 2873 /** 2874 * Called right before a user is unlocked. This gives us a chance to prepare 2875 * app storage. 2876 */ 2877 public void onBeforeUnlockUser(@UserIdInt int userId) { 2878 final int userSerial = getUserSerialNumber(userId); 2879 mPm.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_CE); 2880 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_CE); 2881 } 2882 2883 /** 2884 * Make a note of the last started time of a user and do some cleanup. 2885 * This is called with ActivityManagerService lock held. 2886 * @param userId the user that was just foregrounded 2887 */ 2888 public void onUserLoggedIn(@UserIdInt int userId) { 2889 UserData userData = getUserDataNoChecks(userId); 2890 if (userData == null || userData.info.partial) { 2891 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2892 return; 2893 } 2894 2895 final long now = System.currentTimeMillis(); 2896 if (now > EPOCH_PLUS_30_YEARS) { 2897 userData.info.lastLoggedInTime = now; 2898 } 2899 userData.info.lastLoggedInFingerprint = Build.FINGERPRINT; 2900 scheduleWriteUser(userData); 2901 } 2902 2903 private void maybeInitializeDemoMode(int userId) { 2904 if (UserManager.isDeviceInDemoMode(mContext)) { 2905 String demoLauncher = 2906 mContext.getResources().getString( 2907 com.android.internal.R.string.config_demoModeLauncherComponent); 2908 if (!TextUtils.isEmpty(demoLauncher)) { 2909 ComponentName componentToEnable = ComponentName.unflattenFromString(demoLauncher); 2910 try { 2911 AppGlobals.getPackageManager().setComponentEnabledSetting(componentToEnable, 2912 PackageManager.COMPONENT_ENABLED_STATE_ENABLED, /* flags= */ 0, 2913 /* userId= */ userId); 2914 } catch (RemoteException re) { 2915 // Internal, shouldn't happen 2916 } 2917 } 2918 } 2919 } 2920 2921 /** 2922 * Returns the next available user id, filling in any holes in the ids. 2923 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2924 * for data and battery stats collection, or unexpected cross-talk. 2925 */ 2926 private int getNextAvailableId() { 2927 synchronized (mUsersLock) { 2928 int i = MIN_USER_ID; 2929 while (i < MAX_USER_ID) { 2930 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2931 return i; 2932 } 2933 i++; 2934 } 2935 } 2936 throw new IllegalStateException("No user id available!"); 2937 } 2938 2939 private String packageToRestrictionsFileName(String packageName) { 2940 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2941 } 2942 2943 /** 2944 * Enforce that serial number stored in user directory inode matches the 2945 * given expected value. Gracefully sets the serial number if currently 2946 * undefined. 2947 * 2948 * @throws IOException when problem extracting serial number, or serial 2949 * number is mismatched. 2950 */ 2951 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2952 final int foundSerial = getSerialNumber(file); 2953 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 2954 2955 if (foundSerial == -1) { 2956 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 2957 try { 2958 setSerialNumber(file, serialNumber); 2959 } catch (IOException e) { 2960 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 2961 } 2962 2963 } else if (foundSerial != serialNumber) { 2964 throw new IOException("Found serial number " + foundSerial 2965 + " doesn't match expected " + serialNumber); 2966 } 2967 } 2968 2969 /** 2970 * Set serial number stored in user directory inode. 2971 * 2972 * @throws IOException if serial number was already set 2973 */ 2974 private static void setSerialNumber(File file, int serialNumber) 2975 throws IOException { 2976 try { 2977 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 2978 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 2979 } catch (ErrnoException e) { 2980 throw e.rethrowAsIOException(); 2981 } 2982 } 2983 2984 /** 2985 * Return serial number stored in user directory inode. 2986 * 2987 * @return parsed serial number, or -1 if not set 2988 */ 2989 private static int getSerialNumber(File file) throws IOException { 2990 try { 2991 final byte[] buf = new byte[256]; 2992 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 2993 final String serial = new String(buf, 0, len); 2994 try { 2995 return Integer.parseInt(serial); 2996 } catch (NumberFormatException e) { 2997 throw new IOException("Bad serial number: " + serial); 2998 } 2999 } catch (ErrnoException e) { 3000 if (e.errno == OsConstants.ENODATA) { 3001 return -1; 3002 } else { 3003 throw e.rethrowAsIOException(); 3004 } 3005 } 3006 } 3007 3008 @Override 3009 public void setSeedAccountData(int userId, String accountName, String accountType, 3010 PersistableBundle accountOptions, boolean persist) { 3011 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 3012 synchronized (mPackagesLock) { 3013 final UserData userData; 3014 synchronized (mUsersLock) { 3015 userData = getUserDataLU(userId); 3016 if (userData == null) { 3017 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 3018 return; 3019 } 3020 userData.seedAccountName = accountName; 3021 userData.seedAccountType = accountType; 3022 userData.seedAccountOptions = accountOptions; 3023 userData.persistSeedData = persist; 3024 } 3025 if (persist) { 3026 writeUserLP(userData); 3027 } 3028 } 3029 } 3030 3031 @Override 3032 public String getSeedAccountName() throws RemoteException { 3033 checkManageUsersPermission("Cannot get seed account information"); 3034 synchronized (mUsersLock) { 3035 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3036 return userData.seedAccountName; 3037 } 3038 } 3039 3040 @Override 3041 public String getSeedAccountType() throws RemoteException { 3042 checkManageUsersPermission("Cannot get seed account information"); 3043 synchronized (mUsersLock) { 3044 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3045 return userData.seedAccountType; 3046 } 3047 } 3048 3049 @Override 3050 public PersistableBundle getSeedAccountOptions() throws RemoteException { 3051 checkManageUsersPermission("Cannot get seed account information"); 3052 synchronized (mUsersLock) { 3053 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3054 return userData.seedAccountOptions; 3055 } 3056 } 3057 3058 @Override 3059 public void clearSeedAccountData() throws RemoteException { 3060 checkManageUsersPermission("Cannot clear seed account information"); 3061 synchronized (mPackagesLock) { 3062 UserData userData; 3063 synchronized (mUsersLock) { 3064 userData = getUserDataLU(UserHandle.getCallingUserId()); 3065 if (userData == null) return; 3066 userData.clearSeedAccountData(); 3067 } 3068 writeUserLP(userData); 3069 } 3070 } 3071 3072 @Override 3073 public boolean someUserHasSeedAccount(String accountName, String accountType) 3074 throws RemoteException { 3075 checkManageUsersPermission("Cannot check seed account information"); 3076 synchronized (mUsersLock) { 3077 final int userSize = mUsers.size(); 3078 for (int i = 0; i < userSize; i++) { 3079 final UserData data = mUsers.valueAt(i); 3080 if (data.info.isInitialized()) continue; 3081 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 3082 continue; 3083 } 3084 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 3085 continue; 3086 } 3087 return true; 3088 } 3089 } 3090 return false; 3091 } 3092 3093 @Override 3094 public void onShellCommand(FileDescriptor in, FileDescriptor out, 3095 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 3096 (new Shell()).exec(this, in, out, err, args, resultReceiver); 3097 } 3098 3099 int onShellCommand(Shell shell, String cmd) { 3100 if (cmd == null) { 3101 return shell.handleDefaultCommands(cmd); 3102 } 3103 3104 final PrintWriter pw = shell.getOutPrintWriter(); 3105 try { 3106 switch(cmd) { 3107 case "list": 3108 return runList(pw); 3109 } 3110 } catch (RemoteException e) { 3111 pw.println("Remote exception: " + e); 3112 } 3113 return -1; 3114 } 3115 3116 private int runList(PrintWriter pw) throws RemoteException { 3117 final IActivityManager am = ActivityManagerNative.getDefault(); 3118 final List<UserInfo> users = getUsers(false); 3119 if (users == null) { 3120 pw.println("Error: couldn't get users"); 3121 return 1; 3122 } else { 3123 pw.println("Users:"); 3124 for (int i = 0; i < users.size(); i++) { 3125 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 3126 pw.println("\t" + users.get(i).toString() + running); 3127 } 3128 return 0; 3129 } 3130 } 3131 3132 @Override 3133 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3134 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 3135 != PackageManager.PERMISSION_GRANTED) { 3136 pw.println("Permission Denial: can't dump UserManager from from pid=" 3137 + Binder.getCallingPid() 3138 + ", uid=" + Binder.getCallingUid() 3139 + " without permission " 3140 + android.Manifest.permission.DUMP); 3141 return; 3142 } 3143 3144 long now = System.currentTimeMillis(); 3145 StringBuilder sb = new StringBuilder(); 3146 synchronized (mPackagesLock) { 3147 synchronized (mUsersLock) { 3148 pw.println("Users:"); 3149 for (int i = 0; i < mUsers.size(); i++) { 3150 UserData userData = mUsers.valueAt(i); 3151 if (userData == null) { 3152 continue; 3153 } 3154 UserInfo userInfo = userData.info; 3155 final int userId = userInfo.id; 3156 pw.print(" "); pw.print(userInfo); 3157 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 3158 if (mRemovingUserIds.get(userId)) { 3159 pw.print(" <removing> "); 3160 } 3161 if (userInfo.partial) { 3162 pw.print(" <partial>"); 3163 } 3164 pw.println(); 3165 pw.print(" Created: "); 3166 if (userInfo.creationTime == 0) { 3167 pw.println("<unknown>"); 3168 } else { 3169 sb.setLength(0); 3170 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 3171 sb.append(" ago"); 3172 pw.println(sb); 3173 } 3174 pw.print(" Last logged in: "); 3175 if (userInfo.lastLoggedInTime == 0) { 3176 pw.println("<unknown>"); 3177 } else { 3178 sb.setLength(0); 3179 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 3180 sb.append(" ago"); 3181 pw.println(sb); 3182 } 3183 pw.print(" Last logged in fingerprint: "); 3184 pw.println(userInfo.lastLoggedInFingerprint); 3185 pw.print(" Has profile owner: "); 3186 pw.println(mIsUserManaged.get(userId)); 3187 pw.println(" Restrictions:"); 3188 synchronized (mRestrictionsLock) { 3189 UserRestrictionsUtils.dumpRestrictions( 3190 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 3191 pw.println(" Device policy local restrictions:"); 3192 UserRestrictionsUtils.dumpRestrictions( 3193 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 3194 pw.println(" Effective restrictions:"); 3195 UserRestrictionsUtils.dumpRestrictions( 3196 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 3197 } 3198 3199 if (userData.account != null) { 3200 pw.print(" Account name: " + userData.account); 3201 pw.println(); 3202 } 3203 3204 if (userData.seedAccountName != null) { 3205 pw.print(" Seed account name: " + userData.seedAccountName); 3206 pw.println(); 3207 if (userData.seedAccountType != null) { 3208 pw.print(" account type: " + userData.seedAccountType); 3209 pw.println(); 3210 } 3211 if (userData.seedAccountOptions != null) { 3212 pw.print(" account options exist"); 3213 pw.println(); 3214 } 3215 } 3216 } 3217 } 3218 pw.println(); 3219 pw.println(" Device policy global restrictions:"); 3220 synchronized (mRestrictionsLock) { 3221 UserRestrictionsUtils 3222 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 3223 } 3224 pw.println(); 3225 pw.println(" Global restrictions owner id:" + mGlobalRestrictionOwnerUserId); 3226 pw.println(); 3227 pw.println(" Guest restrictions:"); 3228 synchronized (mGuestRestrictions) { 3229 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 3230 } 3231 synchronized (mUsersLock) { 3232 pw.println(); 3233 pw.println(" Device managed: " + mIsDeviceManaged); 3234 } 3235 synchronized (mUserStates) { 3236 pw.println(" Started users state: " + mUserStates); 3237 } 3238 // Dump some capabilities 3239 pw.println(); 3240 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 3241 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 3242 pw.println(" All guests ephemeral: " + Resources.getSystem().getBoolean( 3243 com.android.internal.R.bool.config_guestUserEphemeral)); 3244 } 3245 } 3246 3247 final class MainHandler extends Handler { 3248 3249 @Override 3250 public void handleMessage(Message msg) { 3251 switch (msg.what) { 3252 case WRITE_USER_MSG: 3253 removeMessages(WRITE_USER_MSG, msg.obj); 3254 synchronized (mPackagesLock) { 3255 int userId = ((UserData) msg.obj).info.id; 3256 UserData userData = getUserDataNoChecks(userId); 3257 if (userData != null) { 3258 writeUserLP(userData); 3259 } 3260 } 3261 } 3262 } 3263 } 3264 3265 /** 3266 * @param userId 3267 * @return whether the user has been initialized yet 3268 */ 3269 boolean isInitialized(int userId) { 3270 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 3271 } 3272 3273 private class LocalService extends UserManagerInternal { 3274 @Override 3275 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 3276 @Nullable Bundle globalRestrictions) { 3277 UserManagerService.this.setDevicePolicyUserRestrictionsInner(userId, localRestrictions, 3278 globalRestrictions); 3279 } 3280 3281 @Override 3282 public Bundle getBaseUserRestrictions(int userId) { 3283 synchronized (mRestrictionsLock) { 3284 return mBaseUserRestrictions.get(userId); 3285 } 3286 } 3287 3288 @Override 3289 public void setBaseUserRestrictionsByDpmsForMigration( 3290 int userId, Bundle baseRestrictions) { 3291 synchronized (mRestrictionsLock) { 3292 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 3293 invalidateEffectiveUserRestrictionsLR(userId); 3294 } 3295 3296 final UserData userData = getUserDataNoChecks(userId); 3297 synchronized (mPackagesLock) { 3298 if (userData != null) { 3299 writeUserLP(userData); 3300 } else { 3301 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 3302 } 3303 } 3304 } 3305 3306 @Override 3307 public boolean getUserRestriction(int userId, String key) { 3308 return getUserRestrictions(userId).getBoolean(key); 3309 } 3310 3311 @Override 3312 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 3313 synchronized (mUserRestrictionsListeners) { 3314 mUserRestrictionsListeners.add(listener); 3315 } 3316 } 3317 3318 @Override 3319 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 3320 synchronized (mUserRestrictionsListeners) { 3321 mUserRestrictionsListeners.remove(listener); 3322 } 3323 } 3324 3325 @Override 3326 public void setDeviceManaged(boolean isManaged) { 3327 synchronized (mUsersLock) { 3328 mIsDeviceManaged = isManaged; 3329 } 3330 } 3331 3332 @Override 3333 public void setUserManaged(int userId, boolean isManaged) { 3334 synchronized (mUsersLock) { 3335 mIsUserManaged.put(userId, isManaged); 3336 } 3337 } 3338 3339 @Override 3340 public void setUserIcon(int userId, Bitmap bitmap) { 3341 long ident = Binder.clearCallingIdentity(); 3342 try { 3343 synchronized (mPackagesLock) { 3344 UserData userData = getUserDataNoChecks(userId); 3345 if (userData == null || userData.info.partial) { 3346 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 3347 return; 3348 } 3349 writeBitmapLP(userData.info, bitmap); 3350 writeUserLP(userData); 3351 } 3352 sendUserInfoChangedBroadcast(userId); 3353 } finally { 3354 Binder.restoreCallingIdentity(ident); 3355 } 3356 } 3357 3358 @Override 3359 public void setForceEphemeralUsers(boolean forceEphemeralUsers) { 3360 synchronized (mUsersLock) { 3361 mForceEphemeralUsers = forceEphemeralUsers; 3362 } 3363 } 3364 3365 @Override 3366 public void removeAllUsers() { 3367 if (UserHandle.USER_SYSTEM == ActivityManager.getCurrentUser()) { 3368 // Remove the non-system users straight away. 3369 removeNonSystemUsers(); 3370 } else { 3371 // Switch to the system user first and then remove the other users. 3372 BroadcastReceiver userSwitchedReceiver = new BroadcastReceiver() { 3373 @Override 3374 public void onReceive(Context context, Intent intent) { 3375 int userId = 3376 intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3377 if (userId != UserHandle.USER_SYSTEM) { 3378 return; 3379 } 3380 mContext.unregisterReceiver(this); 3381 removeNonSystemUsers(); 3382 } 3383 }; 3384 IntentFilter userSwitchedFilter = new IntentFilter(); 3385 userSwitchedFilter.addAction(Intent.ACTION_USER_SWITCHED); 3386 mContext.registerReceiver( 3387 userSwitchedReceiver, userSwitchedFilter, null, mHandler); 3388 3389 // Switch to the system user. 3390 ActivityManager am = 3391 (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 3392 am.switchUser(UserHandle.USER_SYSTEM); 3393 } 3394 } 3395 3396 @Override 3397 public void onEphemeralUserStop(int userId) { 3398 synchronized (mUsersLock) { 3399 UserInfo userInfo = getUserInfoLU(userId); 3400 if (userInfo != null && userInfo.isEphemeral()) { 3401 // Do not allow switching back to the ephemeral user again as the user is going 3402 // to be deleted. 3403 userInfo.flags |= UserInfo.FLAG_DISABLED; 3404 if (userInfo.isGuest()) { 3405 // Indicate that the guest will be deleted after it stops. 3406 userInfo.guestToRemove = true; 3407 } 3408 } 3409 } 3410 } 3411 3412 @Override 3413 public UserInfo createUserEvenWhenDisallowed(String name, int flags) { 3414 UserInfo user = createUserInternalUnchecked(name, flags, UserHandle.USER_NULL); 3415 // Keep this in sync with UserManager.createUser 3416 if (user != null && !user.isAdmin()) { 3417 setUserRestriction(UserManager.DISALLOW_SMS, true, user.id); 3418 setUserRestriction(UserManager.DISALLOW_OUTGOING_CALLS, true, user.id); 3419 } 3420 return user; 3421 } 3422 3423 @Override 3424 public boolean isUserRunning(int userId) { 3425 synchronized (mUserStates) { 3426 return mUserStates.get(userId, -1) >= 0; 3427 } 3428 } 3429 3430 @Override 3431 public void setUserState(int userId, int userState) { 3432 synchronized (mUserStates) { 3433 mUserStates.put(userId, userState); 3434 } 3435 } 3436 3437 @Override 3438 public void removeUserState(int userId) { 3439 synchronized (mUserStates) { 3440 mUserStates.delete(userId); 3441 } 3442 } 3443 3444 @Override 3445 public boolean isUserUnlockingOrUnlocked(int userId) { 3446 synchronized (mUserStates) { 3447 int state = mUserStates.get(userId, -1); 3448 return (state == UserState.STATE_RUNNING_UNLOCKING) 3449 || (state == UserState.STATE_RUNNING_UNLOCKED); 3450 } 3451 } 3452 } 3453 3454 /* Remove all the users except of the system one. */ 3455 private void removeNonSystemUsers() { 3456 ArrayList<UserInfo> usersToRemove = new ArrayList<>(); 3457 synchronized (mUsersLock) { 3458 final int userSize = mUsers.size(); 3459 for (int i = 0; i < userSize; i++) { 3460 UserInfo ui = mUsers.valueAt(i).info; 3461 if (ui.id != UserHandle.USER_SYSTEM) { 3462 usersToRemove.add(ui); 3463 } 3464 } 3465 } 3466 for (UserInfo ui: usersToRemove) { 3467 removeUser(ui.id); 3468 } 3469 } 3470 3471 private class Shell extends ShellCommand { 3472 @Override 3473 public int onCommand(String cmd) { 3474 return onShellCommand(this, cmd); 3475 } 3476 3477 @Override 3478 public void onHelp() { 3479 final PrintWriter pw = getOutPrintWriter(); 3480 pw.println("User manager (user) commands:"); 3481 pw.println(" help"); 3482 pw.println(" Print this help text."); 3483 pw.println(""); 3484 pw.println(" list"); 3485 pw.println(" Prints all users on the system."); 3486 } 3487 } 3488 3489 private static void debug(String message) { 3490 Log.d(LOG_TAG, message + 3491 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 3492 } 3493} 3494