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