UserManagerService.java revision c5e057c736dd6552586b104bcd06a6c12c573e28
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.pm; 18 19import static android.content.Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS; 20import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK; 21 22import android.Manifest; 23import android.annotation.NonNull; 24import android.annotation.Nullable; 25import android.annotation.UserIdInt; 26import android.app.Activity; 27import android.app.ActivityManager; 28import android.app.ActivityManagerInternal; 29import android.app.ActivityManagerNative; 30import android.app.AppGlobals; 31import android.app.IActivityManager; 32import android.app.IStopUserCallback; 33import android.app.KeyguardManager; 34import android.app.PendingIntent; 35import android.content.BroadcastReceiver; 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.IntentFilter; 40import android.content.IntentSender; 41import android.content.pm.IPackageManager; 42import android.content.pm.PackageManager; 43import android.content.pm.PackageManager.NameNotFoundException; 44import android.content.pm.UserInfo; 45import android.content.res.Resources; 46import android.graphics.Bitmap; 47import android.os.Binder; 48import android.os.Build; 49import android.os.Bundle; 50import android.os.Debug; 51import android.os.Environment; 52import android.os.FileUtils; 53import android.os.Handler; 54import android.os.IBinder; 55import android.os.IUserManager; 56import android.os.Message; 57import android.os.ParcelFileDescriptor; 58import android.os.Parcelable; 59import android.os.PersistableBundle; 60import android.os.Process; 61import android.os.RemoteException; 62import android.os.ResultReceiver; 63import android.os.SELinux; 64import android.os.ServiceManager; 65import android.os.ShellCommand; 66import android.os.UserHandle; 67import android.os.UserManager; 68import android.os.UserManagerInternal; 69import android.os.UserManagerInternal.UserRestrictionsListener; 70import android.os.storage.StorageManager; 71import android.security.GateKeeper; 72import android.service.gatekeeper.IGateKeeperService; 73import android.system.ErrnoException; 74import android.system.Os; 75import android.system.OsConstants; 76import android.text.TextUtils; 77import android.util.AtomicFile; 78import android.util.IntArray; 79import android.util.Log; 80import android.util.Slog; 81import android.util.SparseArray; 82import android.util.SparseBooleanArray; 83import android.util.SparseIntArray; 84import android.util.TimeUtils; 85import android.util.Xml; 86 87import com.android.internal.annotations.GuardedBy; 88import com.android.internal.annotations.VisibleForTesting; 89import com.android.internal.app.IAppOpsService; 90import com.android.internal.logging.MetricsLogger; 91import com.android.internal.util.FastXmlSerializer; 92import com.android.internal.util.Preconditions; 93import com.android.internal.util.XmlUtils; 94import com.android.internal.widget.LockPatternUtils; 95import com.android.server.LocalServices; 96import com.android.server.SystemService; 97import com.android.server.am.UserState; 98import com.android.server.storage.DeviceStorageMonitorInternal; 99import libcore.io.IoUtils; 100import libcore.util.Objects; 101 102import org.xmlpull.v1.XmlPullParser; 103import org.xmlpull.v1.XmlPullParserException; 104import org.xmlpull.v1.XmlSerializer; 105 106import java.io.BufferedOutputStream; 107import java.io.File; 108import java.io.FileDescriptor; 109import java.io.FileInputStream; 110import java.io.FileNotFoundException; 111import java.io.FileOutputStream; 112import java.io.IOException; 113import java.io.PrintWriter; 114import java.nio.charset.StandardCharsets; 115import java.util.ArrayList; 116import java.util.List; 117 118/** 119 * Service for {@link UserManager}. 120 * 121 * Method naming convention: 122 * <ul> 123 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 124 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 125 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 126 * </ul> 127 */ 128public class UserManagerService extends IUserManager.Stub { 129 130 private static final String LOG_TAG = "UserManagerService"; 131 static final boolean DBG = false; // DO NOT SUBMIT WITH TRUE 132 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 133 134 private static final String TAG_NAME = "name"; 135 private static final String TAG_ACCOUNT = "account"; 136 private static final String ATTR_FLAGS = "flags"; 137 private static final String ATTR_ICON_PATH = "icon"; 138 private static final String ATTR_ID = "id"; 139 private static final String ATTR_CREATION_TIME = "created"; 140 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 141 private static final String ATTR_LAST_LOGGED_IN_FINGERPRINT = "lastLoggedInFingerprint"; 142 private static final String ATTR_SERIAL_NO = "serialNumber"; 143 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 144 private static final String ATTR_PARTIAL = "partial"; 145 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 146 private static final String ATTR_USER_VERSION = "version"; 147 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 148 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 149 private static final String ATTR_SEED_ACCOUNT_NAME = "seedAccountName"; 150 private static final String ATTR_SEED_ACCOUNT_TYPE = "seedAccountType"; 151 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 152 private static final String TAG_USERS = "users"; 153 private static final String TAG_USER = "user"; 154 private static final String TAG_RESTRICTIONS = "restrictions"; 155 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 156 private static final String TAG_GLOBAL_RESTRICTION_OWNER_ID = "globalRestrictionOwnerUserId"; 157 private static final String TAG_ENTRY = "entry"; 158 private static final String TAG_VALUE = "value"; 159 private static final String TAG_SEED_ACCOUNT_OPTIONS = "seedAccountOptions"; 160 private static final String ATTR_KEY = "key"; 161 private static final String ATTR_VALUE_TYPE = "type"; 162 private static final String ATTR_MULTIPLE = "m"; 163 164 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 165 private static final String ATTR_TYPE_STRING = "s"; 166 private static final String ATTR_TYPE_BOOLEAN = "b"; 167 private static final String ATTR_TYPE_INTEGER = "i"; 168 private static final String ATTR_TYPE_BUNDLE = "B"; 169 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 170 171 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 172 private static final String USER_LIST_FILENAME = "userlist.xml"; 173 private static final String USER_PHOTO_FILENAME = "photo.png"; 174 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 175 176 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 177 private static final String XML_SUFFIX = ".xml"; 178 179 private static final int ALLOWED_FLAGS_FOR_CREATE_USERS_PERMISSION = 180 UserInfo.FLAG_MANAGED_PROFILE 181 | UserInfo.FLAG_EPHEMERAL 182 | UserInfo.FLAG_RESTRICTED 183 | UserInfo.FLAG_GUEST; 184 185 private static final int MIN_USER_ID = 10; 186 // We need to keep process uid within Integer.MAX_VALUE. 187 private static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 188 189 private static final int USER_VERSION = 6; 190 191 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 192 193 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 194 // without first making sure that the rest of the framework is prepared for it. 195 private static final int MAX_MANAGED_PROFILES = 1; 196 197 static final int WRITE_USER_MSG = 1; 198 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 199 200 private static final String XATTR_SERIAL = "user.serial"; 201 202 // Tron counters 203 private static final String TRON_GUEST_CREATED = "users_guest_created"; 204 private static final String TRON_USER_CREATED = "users_user_created"; 205 206 private final Context mContext; 207 private final PackageManagerService mPm; 208 private final Object mPackagesLock; 209 // Short-term lock for internal state, when interaction/sync with PM is not required 210 private final Object mUsersLock = new Object(); 211 private final Object mRestrictionsLock = new Object(); 212 213 private final Handler mHandler; 214 215 private final File mUsersDir; 216 private final File mUserListFile; 217 218 private static final IBinder mUserRestriconToken = new Binder(); 219 220 /** 221 * User-related information that is used for persisting to flash. Only UserInfo is 222 * directly exposed to other system apps. 223 */ 224 private static class UserData { 225 // Basic user information and properties 226 UserInfo info; 227 // Account name used when there is a strong association between a user and an account 228 String account; 229 // Account information for seeding into a newly created user. This could also be 230 // used for login validation for an existing user, for updating their credentials. 231 // In the latter case, data may not need to be persisted as it is only valid for the 232 // current login session. 233 String seedAccountName; 234 String seedAccountType; 235 PersistableBundle seedAccountOptions; 236 // Whether to perist the seed account information to be available after a boot 237 boolean persistSeedData; 238 239 void clearSeedAccountData() { 240 seedAccountName = null; 241 seedAccountType = null; 242 seedAccountOptions = null; 243 persistSeedData = false; 244 } 245 } 246 247 @GuardedBy("mUsersLock") 248 private final SparseArray<UserData> mUsers = new SparseArray<>(); 249 250 /** 251 * User restrictions set via UserManager. This doesn't include restrictions set by 252 * device owner / profile owners. 253 * 254 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 255 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 256 * maybe shared between {@link #mBaseUserRestrictions} and 257 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 258 * (Otherwise we won't be able to detect what restrictions have changed in 259 * {@link #updateUserRestrictionsInternalLR}. 260 */ 261 @GuardedBy("mRestrictionsLock") 262 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 263 264 /** 265 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 266 * with device / profile owner restrictions. We'll initialize it lazily; use 267 * {@link #getEffectiveUserRestrictions} to access it. 268 * 269 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 270 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 271 * maybe shared between {@link #mBaseUserRestrictions} and 272 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 273 * (Otherwise we won't be able to detect what restrictions have changed in 274 * {@link #updateUserRestrictionsInternalLR}. 275 */ 276 @GuardedBy("mRestrictionsLock") 277 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 278 279 /** 280 * User restrictions that have already been applied in 281 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 282 * that have changed since the last 283 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 284 */ 285 @GuardedBy("mRestrictionsLock") 286 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 287 288 /** 289 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 290 * that should be applied to all users, including guests. 291 */ 292 @GuardedBy("mRestrictionsLock") 293 private Bundle mDevicePolicyGlobalUserRestrictions; 294 295 /** 296 * Id of the user that set global restrictions. 297 */ 298 @GuardedBy("mRestrictionsLock") 299 private int mGlobalRestrictionOwnerUserId = UserHandle.USER_NULL; 300 301 /** 302 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 303 * for each user. 304 */ 305 @GuardedBy("mRestrictionsLock") 306 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 307 308 @GuardedBy("mGuestRestrictions") 309 private final Bundle mGuestRestrictions = new Bundle(); 310 311 /** 312 * Set of user IDs being actively removed. Removed IDs linger in this set 313 * for several seconds to work around a VFS caching issue. 314 */ 315 @GuardedBy("mUsersLock") 316 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 317 318 @GuardedBy("mUsersLock") 319 private int[] mUserIds; 320 @GuardedBy("mPackagesLock") 321 private int mNextSerialNumber; 322 private int mUserVersion = 0; 323 324 private IAppOpsService mAppOpsService; 325 326 private final LocalService mLocalService; 327 328 @GuardedBy("mUsersLock") 329 private boolean mIsDeviceManaged; 330 331 @GuardedBy("mUsersLock") 332 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 333 334 @GuardedBy("mUserRestrictionsListeners") 335 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 336 new ArrayList<>(); 337 338 private final LockPatternUtils mLockPatternUtils; 339 340 private final String ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK = 341 "com.android.server.pm.DISABLE_QUIET_MODE_AFTER_UNLOCK"; 342 343 private final BroadcastReceiver mDisableQuietModeCallback = new BroadcastReceiver() { 344 @Override 345 public void onReceive(Context context, Intent intent) { 346 if (ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK.equals(intent.getAction())) { 347 final IntentSender target = intent.getParcelableExtra(Intent.EXTRA_INTENT); 348 final int userHandle = intent.getIntExtra(Intent.EXTRA_USER_ID, 0); 349 setQuietModeEnabled(userHandle, false); 350 if (target != null) { 351 try { 352 mContext.startIntentSender(target, null, 0, 0, 0); 353 } catch (IntentSender.SendIntentException e) { 354 /* ignore */ 355 } 356 } 357 } 358 } 359 }; 360 361 /** 362 * Whether all users should be created ephemeral. 363 */ 364 @GuardedBy("mUsersLock") 365 private boolean mForceEphemeralUsers; 366 367 @GuardedBy("mUserStates") 368 private final SparseIntArray mUserStates = new SparseIntArray(); 369 370 private static UserManagerService sInstance; 371 372 public static UserManagerService getInstance() { 373 synchronized (UserManagerService.class) { 374 return sInstance; 375 } 376 } 377 378 public static class LifeCycle extends SystemService { 379 380 private UserManagerService mUms; 381 382 /** 383 * @param context 384 */ 385 public LifeCycle(Context context) { 386 super(context); 387 } 388 389 @Override 390 public void onStart() { 391 mUms = UserManagerService.getInstance(); 392 publishBinderService(Context.USER_SERVICE, mUms); 393 } 394 395 @Override 396 public void onBootPhase(int phase) { 397 if (phase == SystemService.PHASE_ACTIVITY_MANAGER_READY) { 398 mUms.cleanupPartialUsers(); 399 } 400 } 401 } 402 403 @VisibleForTesting 404 UserManagerService(File dataDir) { 405 this(null, null, new Object(), dataDir); 406 } 407 408 /** 409 * Called by package manager to create the service. This is closely 410 * associated with the package manager, and the given lock is the 411 * package manager's own lock. 412 */ 413 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 414 this(context, pm, packagesLock, Environment.getDataDirectory()); 415 } 416 417 private UserManagerService(Context context, PackageManagerService pm, 418 Object packagesLock, File dataDir) { 419 mContext = context; 420 mPm = pm; 421 mPackagesLock = packagesLock; 422 mHandler = new MainHandler(); 423 synchronized (mPackagesLock) { 424 mUsersDir = new File(dataDir, USER_INFO_DIR); 425 mUsersDir.mkdirs(); 426 // Make zeroth user directory, for services to migrate their files to that location 427 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 428 userZeroDir.mkdirs(); 429 FileUtils.setPermissions(mUsersDir.toString(), 430 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 431 -1, -1); 432 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 433 initDefaultGuestRestrictions(); 434 readUserListLP(); 435 sInstance = this; 436 } 437 mLocalService = new LocalService(); 438 LocalServices.addService(UserManagerInternal.class, mLocalService); 439 mLockPatternUtils = new LockPatternUtils(mContext); 440 mUserStates.put(UserHandle.USER_SYSTEM, UserState.STATE_BOOTING); 441 } 442 443 void systemReady() { 444 mAppOpsService = IAppOpsService.Stub.asInterface( 445 ServiceManager.getService(Context.APP_OPS_SERVICE)); 446 447 synchronized (mRestrictionsLock) { 448 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 449 } 450 451 UserInfo currentGuestUser = findCurrentGuestUser(); 452 if (currentGuestUser != null && !hasUserRestriction( 453 UserManager.DISALLOW_CONFIG_WIFI, currentGuestUser.id)) { 454 // If a guest user currently exists, apply the DISALLOW_CONFIG_WIFI option 455 // to it, in case this guest was created in a previous version where this 456 // user restriction was not a default guest restriction. 457 setUserRestriction(UserManager.DISALLOW_CONFIG_WIFI, true, currentGuestUser.id); 458 } 459 460 mContext.registerReceiver(mDisableQuietModeCallback, 461 new IntentFilter(ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK), 462 null, mHandler); 463 } 464 465 void cleanupPartialUsers() { 466 // Prune out any partially created, partially removed and ephemeral users. 467 ArrayList<UserInfo> partials = new ArrayList<>(); 468 synchronized (mUsersLock) { 469 final int userSize = mUsers.size(); 470 for (int i = 0; i < userSize; i++) { 471 UserInfo ui = mUsers.valueAt(i).info; 472 if ((ui.partial || ui.guestToRemove || ui.isEphemeral()) && i != 0) { 473 partials.add(ui); 474 mRemovingUserIds.append(ui.id, true); 475 ui.partial = true; 476 } 477 } 478 } 479 final int partialsSize = partials.size(); 480 for (int i = 0; i < partialsSize; i++) { 481 UserInfo ui = partials.get(i); 482 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 483 + " (name=" + ui.name + ")"); 484 removeUserState(ui.id); 485 } 486 } 487 488 @Override 489 public String getUserAccount(int userId) { 490 checkManageUserAndAcrossUsersFullPermission("get user account"); 491 synchronized (mUsersLock) { 492 return mUsers.get(userId).account; 493 } 494 } 495 496 @Override 497 public void setUserAccount(int userId, String accountName) { 498 checkManageUserAndAcrossUsersFullPermission("set user account"); 499 UserData userToUpdate = null; 500 synchronized (mPackagesLock) { 501 synchronized (mUsersLock) { 502 final UserData userData = mUsers.get(userId); 503 if (userData == null) { 504 Slog.e(LOG_TAG, "User not found for setting user account: u" + userId); 505 return; 506 } 507 String currentAccount = userData.account; 508 if (!Objects.equal(currentAccount, accountName)) { 509 userData.account = accountName; 510 userToUpdate = userData; 511 } 512 } 513 514 if (userToUpdate != null) { 515 writeUserLP(userToUpdate); 516 } 517 } 518 } 519 520 @Override 521 public UserInfo getPrimaryUser() { 522 checkManageUsersPermission("query users"); 523 synchronized (mUsersLock) { 524 final int userSize = mUsers.size(); 525 for (int i = 0; i < userSize; i++) { 526 UserInfo ui = mUsers.valueAt(i).info; 527 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 528 return ui; 529 } 530 } 531 } 532 return null; 533 } 534 535 @Override 536 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 537 checkManageOrCreateUsersPermission("query users"); 538 synchronized (mUsersLock) { 539 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 540 final int userSize = mUsers.size(); 541 for (int i = 0; i < userSize; i++) { 542 UserInfo ui = mUsers.valueAt(i).info; 543 if (ui.partial) { 544 continue; 545 } 546 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 547 users.add(userWithName(ui)); 548 } 549 } 550 return users; 551 } 552 } 553 554 @Override 555 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 556 boolean returnFullInfo = true; 557 if (userId != UserHandle.getCallingUserId()) { 558 checkManageOrCreateUsersPermission("getting profiles related to user " + userId); 559 } else { 560 returnFullInfo = hasManageUsersPermission(); 561 } 562 final long ident = Binder.clearCallingIdentity(); 563 try { 564 synchronized (mUsersLock) { 565 return getProfilesLU(userId, enabledOnly, returnFullInfo); 566 } 567 } finally { 568 Binder.restoreCallingIdentity(ident); 569 } 570 } 571 572 @Override 573 public int[] getProfileIds(int userId, boolean enabledOnly) { 574 if (userId != UserHandle.getCallingUserId()) { 575 checkManageUsersPermission("getting profiles related to user " + userId); 576 } 577 final long ident = Binder.clearCallingIdentity(); 578 try { 579 synchronized (mUsersLock) { 580 return getProfileIdsLU(userId, enabledOnly).toArray(); 581 } 582 } finally { 583 Binder.restoreCallingIdentity(ident); 584 } 585 } 586 587 /** Assume permissions already checked and caller's identity cleared */ 588 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly, boolean fullInfo) { 589 IntArray profileIds = getProfileIdsLU(userId, enabledOnly); 590 ArrayList<UserInfo> users = new ArrayList<>(profileIds.size()); 591 for (int i = 0; i < profileIds.size(); i++) { 592 int profileId = profileIds.get(i); 593 UserInfo userInfo = mUsers.get(profileId).info; 594 // If full info is not required - clear PII data to prevent 3P apps from reading it 595 if (!fullInfo) { 596 userInfo = new UserInfo(userInfo); 597 userInfo.name = null; 598 userInfo.iconPath = null; 599 } else { 600 userInfo = userWithName(userInfo); 601 } 602 users.add(userInfo); 603 } 604 return users; 605 } 606 607 /** 608 * Assume permissions already checked and caller's identity cleared 609 */ 610 private IntArray getProfileIdsLU(int userId, boolean enabledOnly) { 611 UserInfo user = getUserInfoLU(userId); 612 IntArray result = new IntArray(mUsers.size()); 613 if (user == null) { 614 // Probably a dying user 615 return result; 616 } 617 final int userSize = mUsers.size(); 618 for (int i = 0; i < userSize; i++) { 619 UserInfo profile = mUsers.valueAt(i).info; 620 if (!isProfileOf(user, profile)) { 621 continue; 622 } 623 if (enabledOnly && !profile.isEnabled()) { 624 continue; 625 } 626 if (mRemovingUserIds.get(profile.id)) { 627 continue; 628 } 629 if (profile.partial) { 630 continue; 631 } 632 result.add(profile.id); 633 } 634 return result; 635 } 636 637 @Override 638 public int getCredentialOwnerProfile(int userHandle) { 639 checkManageUsersPermission("get the credential owner"); 640 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 641 synchronized (mUsersLock) { 642 UserInfo profileParent = getProfileParentLU(userHandle); 643 if (profileParent != null) { 644 return profileParent.id; 645 } 646 } 647 } 648 649 return userHandle; 650 } 651 652 @Override 653 public boolean isSameProfileGroup(int userId, int otherUserId) { 654 if (userId == otherUserId) return true; 655 checkManageUsersPermission("check if in the same profile group"); 656 synchronized (mPackagesLock) { 657 return isSameProfileGroupLP(userId, otherUserId); 658 } 659 } 660 661 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 662 synchronized (mUsersLock) { 663 UserInfo userInfo = getUserInfoLU(userId); 664 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 665 return false; 666 } 667 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 668 if (otherUserInfo == null 669 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 670 return false; 671 } 672 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 673 } 674 } 675 676 @Override 677 public UserInfo getProfileParent(int userHandle) { 678 checkManageUsersPermission("get the profile parent"); 679 synchronized (mUsersLock) { 680 return getProfileParentLU(userHandle); 681 } 682 } 683 684 private UserInfo getProfileParentLU(int userHandle) { 685 UserInfo profile = getUserInfoLU(userHandle); 686 if (profile == null) { 687 return null; 688 } 689 int parentUserId = profile.profileGroupId; 690 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 691 return null; 692 } else { 693 return getUserInfoLU(parentUserId); 694 } 695 } 696 697 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 698 return user.id == profile.id || 699 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 700 && user.profileGroupId == profile.profileGroupId); 701 } 702 703 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 704 UserHandle parentHandle, boolean inQuietMode) { 705 Intent intent = new Intent(); 706 if (inQuietMode) { 707 intent.setAction(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE); 708 } else { 709 intent.setAction(Intent.ACTION_MANAGED_PROFILE_AVAILABLE); 710 } 711 intent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 712 intent.putExtra(Intent.EXTRA_USER, profileHandle); 713 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 714 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 715 mContext.sendBroadcastAsUser(intent, parentHandle); 716 } 717 718 @Override 719 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 720 checkManageUsersPermission("silence profile"); 721 boolean changed = false; 722 UserInfo profile, parent; 723 synchronized (mPackagesLock) { 724 synchronized (mUsersLock) { 725 profile = getUserInfoLU(userHandle); 726 parent = getProfileParentLU(userHandle); 727 728 } 729 if (profile == null || !profile.isManagedProfile()) { 730 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 731 } 732 if (profile.isQuietModeEnabled() != enableQuietMode) { 733 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 734 writeUserLP(getUserDataLU(profile.id)); 735 changed = true; 736 } 737 } 738 if (changed) { 739 long identity = Binder.clearCallingIdentity(); 740 try { 741 if (enableQuietMode) { 742 ActivityManagerNative.getDefault().stopUser(userHandle, /* force */true, null); 743 LocalServices.getService(ActivityManagerInternal.class) 744 .killForegroundAppsForUser(userHandle); 745 } else { 746 ActivityManagerNative.getDefault().startUserInBackground(userHandle); 747 } 748 } catch (RemoteException e) { 749 Slog.e(LOG_TAG, "fail to start/stop user for quiet mode", e); 750 } finally { 751 Binder.restoreCallingIdentity(identity); 752 } 753 754 broadcastProfileAvailabilityChanges(profile.getUserHandle(), parent.getUserHandle(), 755 enableQuietMode); 756 } 757 } 758 759 @Override 760 public boolean isQuietModeEnabled(int userHandle) { 761 synchronized (mPackagesLock) { 762 UserInfo info; 763 synchronized (mUsersLock) { 764 info = getUserInfoLU(userHandle); 765 } 766 if (info == null || !info.isManagedProfile()) { 767 return false; 768 } 769 return info.isQuietModeEnabled(); 770 } 771 } 772 773 @Override 774 public boolean trySetQuietModeDisabled(int userHandle, IntentSender target) { 775 checkManageUsersPermission("silence profile"); 776 if (StorageManager.isUserKeyUnlocked(userHandle) 777 || !mLockPatternUtils.isSecure(userHandle)) { 778 // if the user is already unlocked, no need to show a profile challenge 779 setQuietModeEnabled(userHandle, false); 780 return true; 781 } 782 783 long identity = Binder.clearCallingIdentity(); 784 try { 785 // otherwise, we show a profile challenge to trigger decryption of the user 786 final KeyguardManager km = (KeyguardManager) mContext.getSystemService( 787 Context.KEYGUARD_SERVICE); 788 // We should use userHandle not credentialOwnerUserId here, as even if it is unified 789 // lock, confirm screenlock page will know and show personal challenge, and unlock 790 // work profile when personal challenge is correct 791 final Intent unlockIntent = km.createConfirmDeviceCredentialIntent(null, null, 792 userHandle); 793 if (unlockIntent == null) { 794 return false; 795 } 796 final Intent callBackIntent = new Intent( 797 ACTION_DISABLE_QUIET_MODE_AFTER_UNLOCK); 798 if (target != null) { 799 callBackIntent.putExtra(Intent.EXTRA_INTENT, target); 800 } 801 callBackIntent.putExtra(Intent.EXTRA_USER_ID, userHandle); 802 callBackIntent.setPackage(mContext.getPackageName()); 803 callBackIntent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); 804 final PendingIntent pendingIntent = PendingIntent.getBroadcast( 805 mContext, 806 0, 807 callBackIntent, 808 PendingIntent.FLAG_CANCEL_CURRENT | 809 PendingIntent.FLAG_ONE_SHOT | 810 PendingIntent.FLAG_IMMUTABLE); 811 // After unlocking the challenge, it will disable quiet mode and run the original 812 // intentSender 813 unlockIntent.putExtra(Intent.EXTRA_INTENT, pendingIntent.getIntentSender()); 814 unlockIntent.setFlags(FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS); 815 mContext.startActivity(unlockIntent); 816 } finally { 817 Binder.restoreCallingIdentity(identity); 818 } 819 return false; 820 } 821 822 @Override 823 public void setUserEnabled(int userId) { 824 checkManageUsersPermission("enable user"); 825 synchronized (mPackagesLock) { 826 UserInfo info; 827 synchronized (mUsersLock) { 828 info = getUserInfoLU(userId); 829 } 830 if (info != null && !info.isEnabled()) { 831 info.flags ^= UserInfo.FLAG_DISABLED; 832 writeUserLP(getUserDataLU(info.id)); 833 } 834 } 835 } 836 837 @Override 838 public UserInfo getUserInfo(int userId) { 839 checkManageOrCreateUsersPermission("query user"); 840 synchronized (mUsersLock) { 841 return userWithName(getUserInfoLU(userId)); 842 } 843 } 844 845 /** 846 * Returns a UserInfo object with the name filled in, for Owner, or the original 847 * if the name is already set. 848 */ 849 private UserInfo userWithName(UserInfo orig) { 850 if (orig != null && orig.name == null && orig.id == UserHandle.USER_SYSTEM) { 851 UserInfo withName = new UserInfo(orig); 852 withName.name = getOwnerName(); 853 return withName; 854 } else { 855 return orig; 856 } 857 } 858 859 @Override 860 public boolean isManagedProfile(int userId) { 861 int callingUserId = UserHandle.getCallingUserId(); 862 if (callingUserId != userId && !hasManageUsersPermission()) { 863 synchronized (mPackagesLock) { 864 if (!isSameProfileGroupLP(callingUserId, userId)) { 865 throw new SecurityException( 866 "You need MANAGE_USERS permission to: check if specified user a " + 867 "managed profile outside your profile group"); 868 } 869 } 870 } 871 synchronized (mUsersLock) { 872 UserInfo userInfo = getUserInfoLU(userId); 873 return userInfo != null && userInfo.isManagedProfile(); 874 } 875 } 876 877 @Override 878 public boolean isDemoUser(int userId) { 879 int callingUserId = UserHandle.getCallingUserId(); 880 if (callingUserId != userId && !hasManageUsersPermission()) { 881 throw new SecurityException("You need MANAGE_USERS permission to query if u=" + userId 882 + " is a demo user"); 883 } 884 synchronized (mUsersLock) { 885 UserInfo userInfo = getUserInfoLU(userId); 886 return userInfo != null && userInfo.isDemo(); 887 } 888 } 889 890 @Override 891 public boolean isRestricted() { 892 synchronized (mUsersLock) { 893 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 894 } 895 } 896 897 @Override 898 public boolean canHaveRestrictedProfile(int userId) { 899 checkManageUsersPermission("canHaveRestrictedProfile"); 900 synchronized (mUsersLock) { 901 final UserInfo userInfo = getUserInfoLU(userId); 902 if (userInfo == null || !userInfo.canHaveProfile()) { 903 return false; 904 } 905 if (!userInfo.isAdmin()) { 906 return false; 907 } 908 // restricted profile can be created if there is no DO set and the admin user has no PO; 909 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 910 } 911 } 912 913 /* 914 * Should be locked on mUsers before calling this. 915 */ 916 private UserInfo getUserInfoLU(int userId) { 917 final UserData userData = mUsers.get(userId); 918 // If it is partial and not in the process of being removed, return as unknown user. 919 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 920 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 921 return null; 922 } 923 return userData != null ? userData.info : null; 924 } 925 926 private UserData getUserDataLU(int userId) { 927 final UserData userData = mUsers.get(userId); 928 // If it is partial and not in the process of being removed, return as unknown user. 929 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 930 return null; 931 } 932 return userData; 933 } 934 935 /** 936 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 937 * <p>No permissions checking or any addition checks are made</p> 938 */ 939 private UserInfo getUserInfoNoChecks(int userId) { 940 synchronized (mUsersLock) { 941 final UserData userData = mUsers.get(userId); 942 return userData != null ? userData.info : null; 943 } 944 } 945 946 /** 947 * Obtains {@link #mUsersLock} and return UserData from mUsers. 948 * <p>No permissions checking or any addition checks are made</p> 949 */ 950 private UserData getUserDataNoChecks(int userId) { 951 synchronized (mUsersLock) { 952 return mUsers.get(userId); 953 } 954 } 955 956 /** Called by PackageManagerService */ 957 public boolean exists(int userId) { 958 return getUserInfoNoChecks(userId) != null; 959 } 960 961 @Override 962 public void setUserName(int userId, String name) { 963 checkManageUsersPermission("rename users"); 964 boolean changed = false; 965 synchronized (mPackagesLock) { 966 UserData userData = getUserDataNoChecks(userId); 967 if (userData == null || userData.info.partial) { 968 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 969 return; 970 } 971 if (name != null && !name.equals(userData.info.name)) { 972 userData.info.name = name; 973 writeUserLP(userData); 974 changed = true; 975 } 976 } 977 if (changed) { 978 sendUserInfoChangedBroadcast(userId); 979 } 980 } 981 982 @Override 983 public void setUserIcon(int userId, Bitmap bitmap) { 984 checkManageUsersPermission("update users"); 985 if (hasUserRestriction(UserManager.DISALLOW_SET_USER_ICON, userId)) { 986 Log.w(LOG_TAG, "Cannot set user icon. DISALLOW_SET_USER_ICON is enabled."); 987 return; 988 } 989 mLocalService.setUserIcon(userId, bitmap); 990 } 991 992 993 994 private void sendUserInfoChangedBroadcast(int userId) { 995 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 996 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 997 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 998 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 999 } 1000 1001 @Override 1002 public ParcelFileDescriptor getUserIcon(int targetUserId) { 1003 String iconPath; 1004 synchronized (mPackagesLock) { 1005 UserInfo targetUserInfo = getUserInfoNoChecks(targetUserId); 1006 if (targetUserInfo == null || targetUserInfo.partial) { 1007 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + targetUserId); 1008 return null; 1009 } 1010 1011 final int callingUserId = UserHandle.getCallingUserId(); 1012 final int callingGroupId = getUserInfoNoChecks(callingUserId).profileGroupId; 1013 final int targetGroupId = targetUserInfo.profileGroupId; 1014 final boolean sameGroup = (callingGroupId != UserInfo.NO_PROFILE_GROUP_ID 1015 && callingGroupId == targetGroupId); 1016 if ((callingUserId != targetUserId) && !sameGroup) { 1017 checkManageUsersPermission("get the icon of a user who is not related"); 1018 } 1019 1020 if (targetUserInfo.iconPath == null) { 1021 return null; 1022 } 1023 iconPath = targetUserInfo.iconPath; 1024 } 1025 1026 try { 1027 return ParcelFileDescriptor.open( 1028 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 1029 } catch (FileNotFoundException e) { 1030 Log.e(LOG_TAG, "Couldn't find icon file", e); 1031 } 1032 return null; 1033 } 1034 1035 public void makeInitialized(int userId) { 1036 checkManageUsersPermission("makeInitialized"); 1037 boolean scheduleWriteUser = false; 1038 UserData userData; 1039 synchronized (mUsersLock) { 1040 userData = mUsers.get(userId); 1041 if (userData == null || userData.info.partial) { 1042 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 1043 return; 1044 } 1045 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1046 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1047 scheduleWriteUser = true; 1048 } 1049 } 1050 if (scheduleWriteUser) { 1051 scheduleWriteUser(userData); 1052 } 1053 } 1054 1055 /** 1056 * If default guest restrictions haven't been initialized yet, add the basic 1057 * restrictions. 1058 */ 1059 private void initDefaultGuestRestrictions() { 1060 synchronized (mGuestRestrictions) { 1061 if (mGuestRestrictions.isEmpty()) { 1062 mGuestRestrictions.putBoolean(UserManager.DISALLOW_CONFIG_WIFI, true); 1063 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 1064 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 1065 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 1066 } 1067 } 1068 } 1069 1070 @Override 1071 public Bundle getDefaultGuestRestrictions() { 1072 checkManageUsersPermission("getDefaultGuestRestrictions"); 1073 synchronized (mGuestRestrictions) { 1074 return new Bundle(mGuestRestrictions); 1075 } 1076 } 1077 1078 @Override 1079 public void setDefaultGuestRestrictions(Bundle restrictions) { 1080 checkManageUsersPermission("setDefaultGuestRestrictions"); 1081 synchronized (mGuestRestrictions) { 1082 mGuestRestrictions.clear(); 1083 mGuestRestrictions.putAll(restrictions); 1084 } 1085 synchronized (mPackagesLock) { 1086 writeUserListLP(); 1087 } 1088 } 1089 1090 /** 1091 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 1092 */ 1093 void setDevicePolicyUserRestrictionsInner(int userId, @NonNull Bundle local, 1094 @Nullable Bundle global) { 1095 Preconditions.checkNotNull(local); 1096 boolean globalChanged = false; 1097 boolean localChanged; 1098 synchronized (mRestrictionsLock) { 1099 if (global != null) { 1100 // Update global. 1101 globalChanged = !UserRestrictionsUtils.areEqual( 1102 mDevicePolicyGlobalUserRestrictions, global); 1103 if (globalChanged) { 1104 mDevicePolicyGlobalUserRestrictions = global; 1105 } 1106 // Remember the global restriction owner userId to be able to make a distinction 1107 // in getUserRestrictionSource on who set local policies. 1108 mGlobalRestrictionOwnerUserId = userId; 1109 } else { 1110 if (mGlobalRestrictionOwnerUserId == userId) { 1111 // When profile owner sets restrictions it passes null global bundle and we 1112 // reset global restriction owner userId. 1113 // This means this user used to have DO, but now the DO is gone and the user 1114 // instead has PO. 1115 mGlobalRestrictionOwnerUserId = UserHandle.USER_NULL; 1116 } 1117 } 1118 { 1119 // Update local. 1120 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 1121 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 1122 if (localChanged) { 1123 mDevicePolicyLocalUserRestrictions.put(userId, local); 1124 } 1125 } 1126 } 1127 if (DBG) { 1128 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 1129 + " global=" + global + (globalChanged ? " (changed)" : "") 1130 + " local=" + local + (localChanged ? " (changed)" : "") 1131 ); 1132 } 1133 // Don't call them within the mRestrictionsLock. 1134 synchronized (mPackagesLock) { 1135 if (localChanged) { 1136 writeUserLP(getUserDataNoChecks(userId)); 1137 } 1138 if (globalChanged) { 1139 writeUserListLP(); 1140 } 1141 } 1142 1143 synchronized (mRestrictionsLock) { 1144 if (globalChanged) { 1145 applyUserRestrictionsForAllUsersLR(); 1146 } else if (localChanged) { 1147 applyUserRestrictionsLR(userId); 1148 } 1149 } 1150 } 1151 1152 @GuardedBy("mRestrictionsLock") 1153 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 1154 final Bundle baseRestrictions = 1155 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 1156 final Bundle global = mDevicePolicyGlobalUserRestrictions; 1157 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 1158 1159 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 1160 // Common case first. 1161 return baseRestrictions; 1162 } 1163 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 1164 UserRestrictionsUtils.merge(effective, global); 1165 UserRestrictionsUtils.merge(effective, local); 1166 1167 return effective; 1168 } 1169 1170 @GuardedBy("mRestrictionsLock") 1171 private void invalidateEffectiveUserRestrictionsLR(int userId) { 1172 if (DBG) { 1173 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 1174 } 1175 mCachedEffectiveUserRestrictions.remove(userId); 1176 } 1177 1178 private Bundle getEffectiveUserRestrictions(int userId) { 1179 synchronized (mRestrictionsLock) { 1180 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 1181 if (restrictions == null) { 1182 restrictions = computeEffectiveUserRestrictionsLR(userId); 1183 mCachedEffectiveUserRestrictions.put(userId, restrictions); 1184 } 1185 return restrictions; 1186 } 1187 } 1188 1189 /** @return a specific user restriction that's in effect currently. */ 1190 @Override 1191 public boolean hasUserRestriction(String restrictionKey, int userId) { 1192 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1193 return false; 1194 } 1195 Bundle restrictions = getEffectiveUserRestrictions(userId); 1196 return restrictions != null && restrictions.getBoolean(restrictionKey); 1197 } 1198 1199 /** 1200 * @hide 1201 * 1202 * Returns who set a user restriction on a user. 1203 * Requires {@link android.Manifest.permission#MANAGE_USERS} permission. 1204 * @param restrictionKey the string key representing the restriction 1205 * @param userId the id of the user for whom to retrieve the restrictions. 1206 * @return The source of user restriction. Any combination of 1207 * {@link UserManager#RESTRICTION_NOT_SET}, 1208 * {@link UserManager#RESTRICTION_SOURCE_SYSTEM}, 1209 * {@link UserManager#RESTRICTION_SOURCE_DEVICE_OWNER} 1210 * and {@link UserManager#RESTRICTION_SOURCE_PROFILE_OWNER} 1211 */ 1212 @Override 1213 public int getUserRestrictionSource(String restrictionKey, int userId) { 1214 checkManageUsersPermission("getUserRestrictionSource"); 1215 int result = UserManager.RESTRICTION_NOT_SET; 1216 1217 // Shortcut for the most common case 1218 if (!hasUserRestriction(restrictionKey, userId)) { 1219 return result; 1220 } 1221 1222 if (hasBaseUserRestriction(restrictionKey, userId)) { 1223 result |= UserManager.RESTRICTION_SOURCE_SYSTEM; 1224 } 1225 1226 synchronized(mRestrictionsLock) { 1227 Bundle localRestrictions = mDevicePolicyLocalUserRestrictions.get(userId); 1228 if (!UserRestrictionsUtils.isEmpty(localRestrictions) 1229 && localRestrictions.getBoolean(restrictionKey)) { 1230 // Local restrictions may have been set by device owner the userId of which is 1231 // stored in mGlobalRestrictionOwnerUserId. 1232 if (mGlobalRestrictionOwnerUserId == userId) { 1233 result |= UserManager.RESTRICTION_SOURCE_DEVICE_OWNER; 1234 } else { 1235 result |= UserManager.RESTRICTION_SOURCE_PROFILE_OWNER; 1236 } 1237 } 1238 if (!UserRestrictionsUtils.isEmpty(mDevicePolicyGlobalUserRestrictions) 1239 && mDevicePolicyGlobalUserRestrictions.getBoolean(restrictionKey)) { 1240 result |= UserManager.RESTRICTION_SOURCE_DEVICE_OWNER; 1241 } 1242 } 1243 1244 return result; 1245 } 1246 1247 /** 1248 * @return UserRestrictions that are in effect currently. This always returns a new 1249 * {@link Bundle}. 1250 */ 1251 @Override 1252 public Bundle getUserRestrictions(int userId) { 1253 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 1254 } 1255 1256 @Override 1257 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 1258 checkManageUsersPermission("hasBaseUserRestriction"); 1259 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1260 return false; 1261 } 1262 synchronized (mRestrictionsLock) { 1263 Bundle bundle = mBaseUserRestrictions.get(userId); 1264 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 1265 } 1266 } 1267 1268 @Override 1269 public void setUserRestriction(String key, boolean value, int userId) { 1270 checkManageUsersPermission("setUserRestriction"); 1271 if (!UserRestrictionsUtils.isValidRestriction(key)) { 1272 return; 1273 } 1274 synchronized (mRestrictionsLock) { 1275 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 1276 // a copy. 1277 final Bundle newRestrictions = UserRestrictionsUtils.clone( 1278 mBaseUserRestrictions.get(userId)); 1279 newRestrictions.putBoolean(key, value); 1280 1281 updateUserRestrictionsInternalLR(newRestrictions, userId); 1282 } 1283 } 1284 1285 /** 1286 * Optionally updating user restrictions, calculate the effective user restrictions and also 1287 * propagate to other services and system settings. 1288 * 1289 * @param newRestrictions User restrictions to set. 1290 * If null, will not update user restrictions and only does the propagation. 1291 * @param userId target user ID. 1292 */ 1293 @GuardedBy("mRestrictionsLock") 1294 private void updateUserRestrictionsInternalLR( 1295 @Nullable Bundle newRestrictions, int userId) { 1296 1297 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 1298 mAppliedUserRestrictions.get(userId)); 1299 1300 // Update base restrictions. 1301 if (newRestrictions != null) { 1302 // If newRestrictions == the current one, it's probably a bug. 1303 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 1304 1305 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 1306 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 1307 != newRestrictions); 1308 1309 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 1310 mBaseUserRestrictions.put(userId, newRestrictions); 1311 scheduleWriteUser(getUserDataNoChecks(userId)); 1312 } 1313 } 1314 1315 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 1316 1317 mCachedEffectiveUserRestrictions.put(userId, effective); 1318 1319 // Apply the new restrictions. 1320 if (DBG) { 1321 debug("Applying user restrictions: userId=" + userId 1322 + " new=" + effective + " prev=" + prevAppliedRestrictions); 1323 } 1324 1325 if (mAppOpsService != null) { // We skip it until system-ready. 1326 mHandler.post(new Runnable() { 1327 @Override 1328 public void run() { 1329 try { 1330 mAppOpsService.setUserRestrictions(effective, mUserRestriconToken, userId); 1331 } catch (RemoteException e) { 1332 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1333 } 1334 } 1335 }); 1336 } 1337 1338 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1339 1340 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1341 } 1342 1343 private void propagateUserRestrictionsLR(final int userId, 1344 Bundle newRestrictions, Bundle prevRestrictions) { 1345 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1346 // actually, but we still need some kind of synchronization otherwise we might end up 1347 // calling listeners out-of-order, thus "LR". 1348 1349 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1350 return; 1351 } 1352 1353 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1354 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1355 1356 mHandler.post(new Runnable() { 1357 @Override 1358 public void run() { 1359 UserRestrictionsUtils.applyUserRestrictions( 1360 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1361 1362 final UserRestrictionsListener[] listeners; 1363 synchronized (mUserRestrictionsListeners) { 1364 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1365 mUserRestrictionsListeners.toArray(listeners); 1366 } 1367 for (int i = 0; i < listeners.length; i++) { 1368 listeners[i].onUserRestrictionsChanged(userId, 1369 newRestrictionsFinal, prevRestrictionsFinal); 1370 } 1371 } 1372 }); 1373 } 1374 1375 // Package private for the inner class. 1376 void applyUserRestrictionsLR(int userId) { 1377 updateUserRestrictionsInternalLR(null, userId); 1378 } 1379 1380 @GuardedBy("mRestrictionsLock") 1381 // Package private for the inner class. 1382 void applyUserRestrictionsForAllUsersLR() { 1383 if (DBG) { 1384 debug("applyUserRestrictionsForAllUsersLR"); 1385 } 1386 // First, invalidate all cached values. 1387 mCachedEffectiveUserRestrictions.clear(); 1388 1389 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 1390 // it on a handler. 1391 final Runnable r = new Runnable() { 1392 @Override 1393 public void run() { 1394 // Then get the list of running users. 1395 final int[] runningUsers; 1396 try { 1397 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 1398 } catch (RemoteException e) { 1399 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 1400 return; 1401 } 1402 // Then re-calculate the effective restrictions and apply, only for running users. 1403 // It's okay if a new user has started after the getRunningUserIds() call, 1404 // because we'll do the same thing (re-calculate the restrictions and apply) 1405 // when we start a user. 1406 synchronized (mRestrictionsLock) { 1407 for (int i = 0; i < runningUsers.length; i++) { 1408 applyUserRestrictionsLR(runningUsers[i]); 1409 } 1410 } 1411 } 1412 }; 1413 mHandler.post(r); 1414 } 1415 1416 /** 1417 * Check if we've hit the limit of how many users can be created. 1418 */ 1419 private boolean isUserLimitReached() { 1420 int count; 1421 synchronized (mUsersLock) { 1422 count = getAliveUsersExcludingGuestsCountLU(); 1423 } 1424 return count >= UserManager.getMaxSupportedUsers(); 1425 } 1426 1427 @Override 1428 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1429 checkManageUsersPermission("check if more managed profiles can be added."); 1430 if (ActivityManager.isLowRamDeviceStatic()) { 1431 return false; 1432 } 1433 if (!mContext.getPackageManager().hasSystemFeature( 1434 PackageManager.FEATURE_MANAGED_USERS)) { 1435 return false; 1436 } 1437 // Limit number of managed profiles that can be created 1438 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1439 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1440 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1441 return false; 1442 } 1443 synchronized(mUsersLock) { 1444 UserInfo userInfo = getUserInfoLU(userId); 1445 if (!userInfo.canHaveProfile()) { 1446 return false; 1447 } 1448 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1449 - profilesRemovedCount; 1450 // We allow creating a managed profile in the special case where there is only one user. 1451 return usersCountAfterRemoving == 1 1452 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1453 } 1454 } 1455 1456 private int getAliveUsersExcludingGuestsCountLU() { 1457 int aliveUserCount = 0; 1458 final int totalUserCount = mUsers.size(); 1459 // Skip over users being removed 1460 for (int i = 0; i < totalUserCount; i++) { 1461 UserInfo user = mUsers.valueAt(i).info; 1462 if (!mRemovingUserIds.get(user.id) 1463 && !user.isGuest() && !user.partial) { 1464 aliveUserCount++; 1465 } 1466 } 1467 return aliveUserCount; 1468 } 1469 1470 /** 1471 * Enforces that only the system UID or root's UID or apps that have the 1472 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1473 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1474 * permissions can make certain calls to the UserManager. 1475 * 1476 * @param message used as message if SecurityException is thrown 1477 * @throws SecurityException if the caller does not have enough privilege. 1478 */ 1479 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1480 final int uid = Binder.getCallingUid(); 1481 if (uid != Process.SYSTEM_UID && uid != 0 1482 && ActivityManager.checkComponentPermission( 1483 Manifest.permission.MANAGE_USERS, 1484 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1485 && ActivityManager.checkComponentPermission( 1486 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1487 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1488 throw new SecurityException( 1489 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1490 + message); 1491 } 1492 } 1493 1494 /** 1495 * Enforces that only the system UID or root's UID or apps that have the 1496 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1497 * permission can make certain calls to the UserManager. 1498 * 1499 * @param message used as message if SecurityException is thrown 1500 * @throws SecurityException if the caller is not system or root 1501 * @see #hasManageUsersPermission() 1502 */ 1503 private static final void checkManageUsersPermission(String message) { 1504 if (!hasManageUsersPermission()) { 1505 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1506 } 1507 } 1508 1509 /** 1510 * Enforces that only the system UID or root's UID or apps that have the 1511 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} or 1512 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS} 1513 * can make certain calls to the UserManager. 1514 * 1515 * @param message used as message if SecurityException is thrown 1516 * @throws SecurityException if the caller is not system or root 1517 * @see #hasManageOrCreateUsersPermission() 1518 */ 1519 private static final void checkManageOrCreateUsersPermission(String message) { 1520 if (!hasManageOrCreateUsersPermission()) { 1521 throw new SecurityException( 1522 "You either need MANAGE_USERS or CREATE_USERS permission to: " + message); 1523 } 1524 } 1525 1526 /** 1527 * Similar to {@link #checkManageOrCreateUsersPermission(String)} but when the caller is tries 1528 * to create user/profiles other than what is allowed for 1529 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS} permission, then it will only 1530 * allow callers with {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} permission. 1531 */ 1532 private static final void checkManageOrCreateUsersPermission(int creationFlags) { 1533 if ((creationFlags & ~ALLOWED_FLAGS_FOR_CREATE_USERS_PERMISSION) == 0) { 1534 if (!hasManageOrCreateUsersPermission()) { 1535 throw new SecurityException("You either need MANAGE_USERS or CREATE_USERS " 1536 + "permission to create an user with flags: " + creationFlags); 1537 } 1538 } else if (!hasManageUsersPermission()) { 1539 throw new SecurityException("You need MANAGE_USERS permission to create an user " 1540 + " with flags: " + creationFlags); 1541 } 1542 } 1543 1544 /** 1545 * @return whether the calling UID is system UID or root's UID or the calling app has the 1546 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS}. 1547 */ 1548 private static final boolean hasManageUsersPermission() { 1549 final int callingUid = Binder.getCallingUid(); 1550 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1551 || callingUid == Process.ROOT_UID 1552 || ActivityManager.checkComponentPermission( 1553 android.Manifest.permission.MANAGE_USERS, 1554 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1555 } 1556 1557 /** 1558 * @return whether the calling UID is system UID or root's UID or the calling app has the 1559 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} or 1560 * {@link android.Manifest.permission#CREATE_USERS CREATE_USERS}. 1561 */ 1562 private static final boolean hasManageOrCreateUsersPermission() { 1563 final int callingUid = Binder.getCallingUid(); 1564 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1565 || callingUid == Process.ROOT_UID 1566 || ActivityManager.checkComponentPermission( 1567 android.Manifest.permission.MANAGE_USERS, 1568 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED 1569 || ActivityManager.checkComponentPermission( 1570 android.Manifest.permission.CREATE_USERS, 1571 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1572 } 1573 1574 /** 1575 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1576 * UserManager. 1577 * 1578 * @param message used as message if SecurityException is thrown 1579 * @throws SecurityException if the caller is not system or root 1580 */ 1581 private static void checkSystemOrRoot(String message) { 1582 final int uid = Binder.getCallingUid(); 1583 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1584 throw new SecurityException("Only system may: " + message); 1585 } 1586 } 1587 1588 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1589 try { 1590 File dir = new File(mUsersDir, Integer.toString(info.id)); 1591 File file = new File(dir, USER_PHOTO_FILENAME); 1592 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1593 if (!dir.exists()) { 1594 dir.mkdir(); 1595 FileUtils.setPermissions( 1596 dir.getPath(), 1597 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1598 -1, -1); 1599 } 1600 FileOutputStream os; 1601 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1602 && tmp.renameTo(file) && SELinux.restorecon(file)) { 1603 info.iconPath = file.getAbsolutePath(); 1604 } 1605 try { 1606 os.close(); 1607 } catch (IOException ioe) { 1608 // What the ... ! 1609 } 1610 tmp.delete(); 1611 } catch (FileNotFoundException e) { 1612 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1613 } 1614 } 1615 1616 /** 1617 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1618 * cache it elsewhere. 1619 * @return the array of user ids. 1620 */ 1621 public int[] getUserIds() { 1622 synchronized (mUsersLock) { 1623 return mUserIds; 1624 } 1625 } 1626 1627 private void readUserListLP() { 1628 if (!mUserListFile.exists()) { 1629 fallbackToSingleUserLP(); 1630 return; 1631 } 1632 FileInputStream fis = null; 1633 AtomicFile userListFile = new AtomicFile(mUserListFile); 1634 try { 1635 fis = userListFile.openRead(); 1636 XmlPullParser parser = Xml.newPullParser(); 1637 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1638 int type; 1639 while ((type = parser.next()) != XmlPullParser.START_TAG 1640 && type != XmlPullParser.END_DOCUMENT) { 1641 // Skip 1642 } 1643 1644 if (type != XmlPullParser.START_TAG) { 1645 Slog.e(LOG_TAG, "Unable to read user list"); 1646 fallbackToSingleUserLP(); 1647 return; 1648 } 1649 1650 mNextSerialNumber = -1; 1651 if (parser.getName().equals(TAG_USERS)) { 1652 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1653 if (lastSerialNumber != null) { 1654 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1655 } 1656 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1657 if (versionNumber != null) { 1658 mUserVersion = Integer.parseInt(versionNumber); 1659 } 1660 } 1661 1662 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1663 1664 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1665 if (type == XmlPullParser.START_TAG) { 1666 final String name = parser.getName(); 1667 if (name.equals(TAG_USER)) { 1668 String id = parser.getAttributeValue(null, ATTR_ID); 1669 1670 UserData userData = readUserLP(Integer.parseInt(id)); 1671 1672 if (userData != null) { 1673 synchronized (mUsersLock) { 1674 mUsers.put(userData.info.id, userData); 1675 if (mNextSerialNumber < 0 1676 || mNextSerialNumber <= userData.info.id) { 1677 mNextSerialNumber = userData.info.id + 1; 1678 } 1679 } 1680 } 1681 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1682 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1683 && type != XmlPullParser.END_TAG) { 1684 if (type == XmlPullParser.START_TAG) { 1685 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1686 synchronized (mGuestRestrictions) { 1687 UserRestrictionsUtils 1688 .readRestrictions(parser, mGuestRestrictions); 1689 } 1690 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1691 ) { 1692 UserRestrictionsUtils.readRestrictions(parser, 1693 newDevicePolicyGlobalUserRestrictions); 1694 } 1695 break; 1696 } 1697 } 1698 } else if (name.equals(TAG_GLOBAL_RESTRICTION_OWNER_ID)) { 1699 String ownerUserId = parser.getAttributeValue(null, ATTR_ID); 1700 if (ownerUserId != null) { 1701 mGlobalRestrictionOwnerUserId = Integer.parseInt(ownerUserId); 1702 } 1703 } 1704 } 1705 } 1706 synchronized (mRestrictionsLock) { 1707 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1708 } 1709 updateUserIds(); 1710 upgradeIfNecessaryLP(); 1711 } catch (IOException | XmlPullParserException e) { 1712 fallbackToSingleUserLP(); 1713 } finally { 1714 IoUtils.closeQuietly(fis); 1715 } 1716 } 1717 1718 /** 1719 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1720 */ 1721 private void upgradeIfNecessaryLP() { 1722 final int originalVersion = mUserVersion; 1723 int userVersion = mUserVersion; 1724 if (userVersion < 1) { 1725 // Assign a proper name for the owner, if not initialized correctly before 1726 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1727 if ("Primary".equals(userData.info.name)) { 1728 userData.info.name = 1729 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1730 scheduleWriteUser(userData); 1731 } 1732 userVersion = 1; 1733 } 1734 1735 if (userVersion < 2) { 1736 // Owner should be marked as initialized 1737 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1738 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1739 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1740 scheduleWriteUser(userData); 1741 } 1742 userVersion = 2; 1743 } 1744 1745 1746 if (userVersion < 4) { 1747 userVersion = 4; 1748 } 1749 1750 if (userVersion < 5) { 1751 initDefaultGuestRestrictions(); 1752 userVersion = 5; 1753 } 1754 1755 if (userVersion < 6) { 1756 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1757 synchronized (mUsersLock) { 1758 for (int i = 0; i < mUsers.size(); i++) { 1759 UserData userData = mUsers.valueAt(i); 1760 // In non-split mode, only user 0 can have restricted profiles 1761 if (!splitSystemUser && userData.info.isRestricted() 1762 && (userData.info.restrictedProfileParentId 1763 == UserInfo.NO_PROFILE_GROUP_ID)) { 1764 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1765 scheduleWriteUser(userData); 1766 } 1767 } 1768 } 1769 userVersion = 6; 1770 } 1771 1772 if (userVersion < USER_VERSION) { 1773 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1774 + USER_VERSION); 1775 } else { 1776 mUserVersion = userVersion; 1777 1778 if (originalVersion < mUserVersion) { 1779 writeUserListLP(); 1780 } 1781 } 1782 } 1783 1784 private void fallbackToSingleUserLP() { 1785 int flags = UserInfo.FLAG_INITIALIZED; 1786 // In split system user mode, the admin and primary flags are assigned to the first human 1787 // user. 1788 if (!UserManager.isSplitSystemUser()) { 1789 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1790 } 1791 // Create the system user 1792 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, null, null, flags); 1793 UserData userData = new UserData(); 1794 userData.info = system; 1795 synchronized (mUsersLock) { 1796 mUsers.put(system.id, userData); 1797 } 1798 mNextSerialNumber = MIN_USER_ID; 1799 mUserVersion = USER_VERSION; 1800 1801 Bundle restrictions = new Bundle(); 1802 try { 1803 final String[] defaultFirstUserRestrictions = mContext.getResources().getStringArray( 1804 com.android.internal.R.array.config_defaultFirstUserRestrictions); 1805 for (String userRestriction : defaultFirstUserRestrictions) { 1806 if (UserRestrictionsUtils.isValidRestriction(userRestriction)) { 1807 restrictions.putBoolean(userRestriction, true); 1808 } 1809 } 1810 } catch (Resources.NotFoundException e) { 1811 Log.e(LOG_TAG, "Couldn't find resource: config_defaultFirstUserRestrictions", e); 1812 } 1813 1814 synchronized (mRestrictionsLock) { 1815 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1816 } 1817 1818 updateUserIds(); 1819 initDefaultGuestRestrictions(); 1820 1821 writeUserLP(userData); 1822 writeUserListLP(); 1823 } 1824 1825 private String getOwnerName() { 1826 return mContext.getResources().getString(com.android.internal.R.string.owner_name); 1827 } 1828 1829 private void scheduleWriteUser(UserData UserData) { 1830 if (DBG) { 1831 debug("scheduleWriteUser"); 1832 } 1833 // No need to wrap it within a lock -- worst case, we'll just post the same message 1834 // twice. 1835 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1836 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1837 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1838 } 1839 } 1840 1841 /* 1842 * Writes the user file in this format: 1843 * 1844 * <user flags="20039023" id="0"> 1845 * <name>Primary</name> 1846 * </user> 1847 */ 1848 private void writeUserLP(UserData userData) { 1849 if (DBG) { 1850 debug("writeUserLP " + userData); 1851 } 1852 FileOutputStream fos = null; 1853 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1854 try { 1855 fos = userFile.startWrite(); 1856 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1857 1858 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1859 final XmlSerializer serializer = new FastXmlSerializer(); 1860 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1861 serializer.startDocument(null, true); 1862 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1863 1864 final UserInfo userInfo = userData.info; 1865 serializer.startTag(null, TAG_USER); 1866 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1867 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1868 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1869 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1870 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1871 Long.toString(userInfo.lastLoggedInTime)); 1872 if (userInfo.lastLoggedInFingerprint != null) { 1873 serializer.attribute(null, ATTR_LAST_LOGGED_IN_FINGERPRINT, 1874 userInfo.lastLoggedInFingerprint); 1875 } 1876 if (userInfo.iconPath != null) { 1877 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1878 } 1879 if (userInfo.partial) { 1880 serializer.attribute(null, ATTR_PARTIAL, "true"); 1881 } 1882 if (userInfo.guestToRemove) { 1883 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1884 } 1885 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1886 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1887 Integer.toString(userInfo.profileGroupId)); 1888 } 1889 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1890 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1891 Integer.toString(userInfo.restrictedProfileParentId)); 1892 } 1893 // Write seed data 1894 if (userData.persistSeedData) { 1895 if (userData.seedAccountName != null) { 1896 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 1897 } 1898 if (userData.seedAccountType != null) { 1899 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 1900 } 1901 } 1902 if (userInfo.name != null) { 1903 serializer.startTag(null, TAG_NAME); 1904 serializer.text(userInfo.name); 1905 serializer.endTag(null, TAG_NAME); 1906 } 1907 synchronized (mRestrictionsLock) { 1908 UserRestrictionsUtils.writeRestrictions(serializer, 1909 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1910 UserRestrictionsUtils.writeRestrictions(serializer, 1911 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1912 TAG_DEVICE_POLICY_RESTRICTIONS); 1913 } 1914 1915 if (userData.account != null) { 1916 serializer.startTag(null, TAG_ACCOUNT); 1917 serializer.text(userData.account); 1918 serializer.endTag(null, TAG_ACCOUNT); 1919 } 1920 1921 if (userData.persistSeedData && userData.seedAccountOptions != null) { 1922 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1923 userData.seedAccountOptions.saveToXml(serializer); 1924 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1925 } 1926 serializer.endTag(null, TAG_USER); 1927 1928 serializer.endDocument(); 1929 userFile.finishWrite(fos); 1930 } catch (Exception ioe) { 1931 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id, ioe); 1932 userFile.failWrite(fos); 1933 } 1934 } 1935 1936 /* 1937 * Writes the user list file in this format: 1938 * 1939 * <users nextSerialNumber="3"> 1940 * <user id="0"></user> 1941 * <user id="2"></user> 1942 * </users> 1943 */ 1944 private void writeUserListLP() { 1945 if (DBG) { 1946 debug("writeUserList"); 1947 } 1948 FileOutputStream fos = null; 1949 AtomicFile userListFile = new AtomicFile(mUserListFile); 1950 try { 1951 fos = userListFile.startWrite(); 1952 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1953 1954 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1955 final XmlSerializer serializer = new FastXmlSerializer(); 1956 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1957 serializer.startDocument(null, true); 1958 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1959 1960 serializer.startTag(null, TAG_USERS); 1961 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1962 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1963 1964 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1965 synchronized (mGuestRestrictions) { 1966 UserRestrictionsUtils 1967 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1968 } 1969 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1970 synchronized (mRestrictionsLock) { 1971 UserRestrictionsUtils.writeRestrictions(serializer, 1972 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1973 } 1974 serializer.startTag(null, TAG_GLOBAL_RESTRICTION_OWNER_ID); 1975 serializer.attribute(null, ATTR_ID, Integer.toString(mGlobalRestrictionOwnerUserId)); 1976 serializer.endTag(null, TAG_GLOBAL_RESTRICTION_OWNER_ID); 1977 int[] userIdsToWrite; 1978 synchronized (mUsersLock) { 1979 userIdsToWrite = new int[mUsers.size()]; 1980 for (int i = 0; i < userIdsToWrite.length; i++) { 1981 UserInfo user = mUsers.valueAt(i).info; 1982 userIdsToWrite[i] = user.id; 1983 } 1984 } 1985 for (int id : userIdsToWrite) { 1986 serializer.startTag(null, TAG_USER); 1987 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1988 serializer.endTag(null, TAG_USER); 1989 } 1990 1991 serializer.endTag(null, TAG_USERS); 1992 1993 serializer.endDocument(); 1994 userListFile.finishWrite(fos); 1995 } catch (Exception e) { 1996 userListFile.failWrite(fos); 1997 Slog.e(LOG_TAG, "Error writing user list"); 1998 } 1999 } 2000 2001 private UserData readUserLP(int id) { 2002 int flags = 0; 2003 int serialNumber = id; 2004 String name = null; 2005 String account = null; 2006 String iconPath = null; 2007 long creationTime = 0L; 2008 long lastLoggedInTime = 0L; 2009 String lastLoggedInFingerprint = null; 2010 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 2011 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 2012 boolean partial = false; 2013 boolean guestToRemove = false; 2014 boolean persistSeedData = false; 2015 String seedAccountName = null; 2016 String seedAccountType = null; 2017 PersistableBundle seedAccountOptions = null; 2018 Bundle baseRestrictions = new Bundle(); 2019 Bundle localRestrictions = new Bundle(); 2020 2021 FileInputStream fis = null; 2022 try { 2023 AtomicFile userFile = 2024 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 2025 fis = userFile.openRead(); 2026 XmlPullParser parser = Xml.newPullParser(); 2027 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2028 int type; 2029 while ((type = parser.next()) != XmlPullParser.START_TAG 2030 && type != XmlPullParser.END_DOCUMENT) { 2031 // Skip 2032 } 2033 2034 if (type != XmlPullParser.START_TAG) { 2035 Slog.e(LOG_TAG, "Unable to read user " + id); 2036 return null; 2037 } 2038 2039 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 2040 int storedId = readIntAttribute(parser, ATTR_ID, -1); 2041 if (storedId != id) { 2042 Slog.e(LOG_TAG, "User id does not match the file name"); 2043 return null; 2044 } 2045 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 2046 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 2047 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 2048 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 2049 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 2050 lastLoggedInFingerprint = parser.getAttributeValue(null, 2051 ATTR_LAST_LOGGED_IN_FINGERPRINT); 2052 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 2053 UserInfo.NO_PROFILE_GROUP_ID); 2054 restrictedProfileParentId = readIntAttribute(parser, 2055 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 2056 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 2057 if ("true".equals(valueString)) { 2058 partial = true; 2059 } 2060 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 2061 if ("true".equals(valueString)) { 2062 guestToRemove = true; 2063 } 2064 2065 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 2066 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 2067 if (seedAccountName != null || seedAccountType != null) { 2068 persistSeedData = true; 2069 } 2070 2071 int outerDepth = parser.getDepth(); 2072 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 2073 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2074 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2075 continue; 2076 } 2077 String tag = parser.getName(); 2078 if (TAG_NAME.equals(tag)) { 2079 type = parser.next(); 2080 if (type == XmlPullParser.TEXT) { 2081 name = parser.getText(); 2082 } 2083 } else if (TAG_RESTRICTIONS.equals(tag)) { 2084 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 2085 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 2086 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 2087 } else if (TAG_ACCOUNT.equals(tag)) { 2088 type = parser.next(); 2089 if (type == XmlPullParser.TEXT) { 2090 account = parser.getText(); 2091 } 2092 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 2093 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 2094 persistSeedData = true; 2095 } 2096 } 2097 } 2098 2099 // Create the UserInfo object that gets passed around 2100 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 2101 userInfo.serialNumber = serialNumber; 2102 userInfo.creationTime = creationTime; 2103 userInfo.lastLoggedInTime = lastLoggedInTime; 2104 userInfo.lastLoggedInFingerprint = lastLoggedInFingerprint; 2105 userInfo.partial = partial; 2106 userInfo.guestToRemove = guestToRemove; 2107 userInfo.profileGroupId = profileGroupId; 2108 userInfo.restrictedProfileParentId = restrictedProfileParentId; 2109 2110 // Create the UserData object that's internal to this class 2111 UserData userData = new UserData(); 2112 userData.info = userInfo; 2113 userData.account = account; 2114 userData.seedAccountName = seedAccountName; 2115 userData.seedAccountType = seedAccountType; 2116 userData.persistSeedData = persistSeedData; 2117 userData.seedAccountOptions = seedAccountOptions; 2118 2119 synchronized (mRestrictionsLock) { 2120 mBaseUserRestrictions.put(id, baseRestrictions); 2121 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 2122 } 2123 return userData; 2124 } catch (IOException ioe) { 2125 } catch (XmlPullParserException pe) { 2126 } finally { 2127 if (fis != null) { 2128 try { 2129 fis.close(); 2130 } catch (IOException e) { 2131 } 2132 } 2133 } 2134 return null; 2135 } 2136 2137 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 2138 String valueString = parser.getAttributeValue(null, attr); 2139 if (valueString == null) return defaultValue; 2140 try { 2141 return Integer.parseInt(valueString); 2142 } catch (NumberFormatException nfe) { 2143 return defaultValue; 2144 } 2145 } 2146 2147 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 2148 String valueString = parser.getAttributeValue(null, attr); 2149 if (valueString == null) return defaultValue; 2150 try { 2151 return Long.parseLong(valueString); 2152 } catch (NumberFormatException nfe) { 2153 return defaultValue; 2154 } 2155 } 2156 2157 /** 2158 * Removes the app restrictions file for a specific package and user id, if it exists. 2159 */ 2160 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 2161 synchronized (mPackagesLock) { 2162 File dir = Environment.getUserSystemDirectory(userId); 2163 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 2164 if (resFile.exists()) { 2165 resFile.delete(); 2166 } 2167 } 2168 } 2169 2170 @Override 2171 public UserInfo createProfileForUser(String name, int flags, int userId) { 2172 checkManageOrCreateUsersPermission(flags); 2173 return createUserInternal(name, flags, userId); 2174 } 2175 2176 @Override 2177 public UserInfo createUser(String name, int flags) { 2178 checkManageOrCreateUsersPermission(flags); 2179 return createUserInternal(name, flags, UserHandle.USER_NULL); 2180 } 2181 2182 private UserInfo createUserInternal(String name, int flags, int parentId) { 2183 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 2184 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 2185 return null; 2186 } 2187 DeviceStorageMonitorInternal dsm = LocalServices 2188 .getService(DeviceStorageMonitorInternal.class); 2189 if (dsm.isMemoryLow()) { 2190 Log.w(LOG_TAG, "Cannot add user. Not enough space on disk."); 2191 return null; 2192 } 2193 return createUserInternalUnchecked(name, flags, parentId); 2194 } 2195 2196 private UserInfo createUserInternalUnchecked(String name, int flags, int parentId) { 2197 if (ActivityManager.isLowRamDeviceStatic()) { 2198 return null; 2199 } 2200 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 2201 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 2202 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 2203 final boolean isDemo = (flags & UserInfo.FLAG_DEMO) != 0; 2204 final long ident = Binder.clearCallingIdentity(); 2205 UserInfo userInfo; 2206 UserData userData; 2207 final int userId; 2208 try { 2209 synchronized (mPackagesLock) { 2210 UserData parent = null; 2211 if (parentId != UserHandle.USER_NULL) { 2212 synchronized (mUsersLock) { 2213 parent = getUserDataLU(parentId); 2214 } 2215 if (parent == null) return null; 2216 } 2217 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 2218 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 2219 return null; 2220 } 2221 if (!isGuest && !isManagedProfile && !isDemo && isUserLimitReached()) { 2222 // If we're not adding a guest/demo user or a managed profile and the limit has 2223 // been reached, cannot add a user. 2224 return null; 2225 } 2226 // If we're adding a guest and there already exists one, bail. 2227 if (isGuest && findCurrentGuestUser() != null) { 2228 return null; 2229 } 2230 // In legacy mode, restricted profile's parent can only be the owner user 2231 if (isRestricted && !UserManager.isSplitSystemUser() 2232 && (parentId != UserHandle.USER_SYSTEM)) { 2233 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 2234 return null; 2235 } 2236 if (isRestricted && UserManager.isSplitSystemUser()) { 2237 if (parent == null) { 2238 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 2239 + "specified"); 2240 return null; 2241 } 2242 if (!parent.info.canHaveProfile()) { 2243 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 2244 + "created for the specified parent user id " + parentId); 2245 return null; 2246 } 2247 } 2248 if (!UserManager.isSplitSystemUser() && (flags & UserInfo.FLAG_EPHEMERAL) != 0 2249 && (flags & UserInfo.FLAG_DEMO) == 0) { 2250 Log.e(LOG_TAG, 2251 "Ephemeral users are supported on split-system-user systems only."); 2252 return null; 2253 } 2254 // In split system user mode, we assign the first human user the primary flag. 2255 // And if there is no device owner, we also assign the admin flag to primary user. 2256 if (UserManager.isSplitSystemUser() 2257 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 2258 flags |= UserInfo.FLAG_PRIMARY; 2259 synchronized (mUsersLock) { 2260 if (!mIsDeviceManaged) { 2261 flags |= UserInfo.FLAG_ADMIN; 2262 } 2263 } 2264 } 2265 2266 userId = getNextAvailableId(); 2267 Environment.getUserSystemDirectory(userId).mkdirs(); 2268 boolean ephemeralGuests = Resources.getSystem() 2269 .getBoolean(com.android.internal.R.bool.config_guestUserEphemeral); 2270 2271 synchronized (mUsersLock) { 2272 // Add ephemeral flag to guests/users if required. Also inherit it from parent. 2273 if ((isGuest && ephemeralGuests) || mForceEphemeralUsers 2274 || (parent != null && parent.info.isEphemeral())) { 2275 flags |= UserInfo.FLAG_EPHEMERAL; 2276 } 2277 2278 userInfo = new UserInfo(userId, name, null, flags); 2279 userInfo.serialNumber = mNextSerialNumber++; 2280 long now = System.currentTimeMillis(); 2281 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 2282 userInfo.partial = true; 2283 userInfo.lastLoggedInFingerprint = Build.FINGERPRINT; 2284 userData = new UserData(); 2285 userData.info = userInfo; 2286 mUsers.put(userId, userData); 2287 } 2288 writeUserLP(userData); 2289 writeUserListLP(); 2290 if (parent != null) { 2291 if (isManagedProfile) { 2292 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 2293 parent.info.profileGroupId = parent.info.id; 2294 writeUserLP(parent); 2295 } 2296 userInfo.profileGroupId = parent.info.profileGroupId; 2297 } else if (isRestricted) { 2298 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 2299 parent.info.restrictedProfileParentId = parent.info.id; 2300 writeUserLP(parent); 2301 } 2302 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 2303 } 2304 } 2305 } 2306 final StorageManager storage = mContext.getSystemService(StorageManager.class); 2307 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 2308 mPm.prepareUserData(userId, userInfo.serialNumber, 2309 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 2310 mPm.createNewUser(userId); 2311 userInfo.partial = false; 2312 synchronized (mPackagesLock) { 2313 writeUserLP(userData); 2314 } 2315 updateUserIds(); 2316 Bundle restrictions = new Bundle(); 2317 if (isGuest) { 2318 synchronized (mGuestRestrictions) { 2319 restrictions.putAll(mGuestRestrictions); 2320 } 2321 } 2322 synchronized (mRestrictionsLock) { 2323 mBaseUserRestrictions.append(userId, restrictions); 2324 } 2325 mPm.onNewUserCreated(userId); 2326 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 2327 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 2328 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 2329 android.Manifest.permission.MANAGE_USERS); 2330 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 2331 } finally { 2332 Binder.restoreCallingIdentity(ident); 2333 } 2334 return userInfo; 2335 } 2336 2337 /** 2338 * @hide 2339 */ 2340 @Override 2341 public UserInfo createRestrictedProfile(String name, int parentUserId) { 2342 checkManageOrCreateUsersPermission("setupRestrictedProfile"); 2343 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 2344 if (user == null) { 2345 return null; 2346 } 2347 long identity = Binder.clearCallingIdentity(); 2348 try { 2349 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 2350 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 2351 // the putIntForUser() will fail. 2352 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 2353 android.provider.Settings.Secure.LOCATION_MODE, 2354 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 2355 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 2356 } finally { 2357 Binder.restoreCallingIdentity(identity); 2358 } 2359 return user; 2360 } 2361 2362 /** 2363 * Find the current guest user. If the Guest user is partial, 2364 * then do not include it in the results as it is about to die. 2365 */ 2366 private UserInfo findCurrentGuestUser() { 2367 synchronized (mUsersLock) { 2368 final int size = mUsers.size(); 2369 for (int i = 0; i < size; i++) { 2370 final UserInfo user = mUsers.valueAt(i).info; 2371 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 2372 return user; 2373 } 2374 } 2375 } 2376 return null; 2377 } 2378 2379 /** 2380 * Mark this guest user for deletion to allow us to create another guest 2381 * and switch to that user before actually removing this guest. 2382 * @param userHandle the userid of the current guest 2383 * @return whether the user could be marked for deletion 2384 */ 2385 @Override 2386 public boolean markGuestForDeletion(int userHandle) { 2387 checkManageUsersPermission("Only the system can remove users"); 2388 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2389 UserManager.DISALLOW_REMOVE_USER, false)) { 2390 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2391 return false; 2392 } 2393 2394 long ident = Binder.clearCallingIdentity(); 2395 try { 2396 final UserData userData; 2397 synchronized (mPackagesLock) { 2398 synchronized (mUsersLock) { 2399 userData = mUsers.get(userHandle); 2400 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2401 return false; 2402 } 2403 } 2404 if (!userData.info.isGuest()) { 2405 return false; 2406 } 2407 // We set this to a guest user that is to be removed. This is a temporary state 2408 // where we are allowed to add new Guest users, even if this one is still not 2409 // removed. This user will still show up in getUserInfo() calls. 2410 // If we don't get around to removing this Guest user, it will be purged on next 2411 // startup. 2412 userData.info.guestToRemove = true; 2413 // Mark it as disabled, so that it isn't returned any more when 2414 // profiles are queried. 2415 userData.info.flags |= UserInfo.FLAG_DISABLED; 2416 writeUserLP(userData); 2417 } 2418 } finally { 2419 Binder.restoreCallingIdentity(ident); 2420 } 2421 return true; 2422 } 2423 2424 /** 2425 * Removes a user and all data directories created for that user. This method should be called 2426 * after the user's processes have been terminated. 2427 * @param userHandle the user's id 2428 */ 2429 @Override 2430 public boolean removeUser(int userHandle) { 2431 checkManageOrCreateUsersPermission("Only the system can remove users"); 2432 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2433 UserManager.DISALLOW_REMOVE_USER, false)) { 2434 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2435 return false; 2436 } 2437 2438 long ident = Binder.clearCallingIdentity(); 2439 try { 2440 final UserData userData; 2441 int currentUser = ActivityManager.getCurrentUser(); 2442 if (currentUser == userHandle) { 2443 Log.w(LOG_TAG, "Current user cannot be removed"); 2444 return false; 2445 } 2446 synchronized (mPackagesLock) { 2447 synchronized (mUsersLock) { 2448 userData = mUsers.get(userHandle); 2449 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2450 return false; 2451 } 2452 2453 // We remember deleted user IDs to prevent them from being 2454 // reused during the current boot; they can still be reused 2455 // after a reboot. 2456 mRemovingUserIds.put(userHandle, true); 2457 } 2458 2459 try { 2460 mAppOpsService.removeUser(userHandle); 2461 } catch (RemoteException e) { 2462 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2463 } 2464 // Set this to a partially created user, so that the user will be purged 2465 // on next startup, in case the runtime stops now before stopping and 2466 // removing the user completely. 2467 userData.info.partial = true; 2468 // Mark it as disabled, so that it isn't returned any more when 2469 // profiles are queried. 2470 userData.info.flags |= UserInfo.FLAG_DISABLED; 2471 writeUserLP(userData); 2472 } 2473 2474 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2475 && userData.info.isManagedProfile()) { 2476 // Send broadcast to notify system that the user removed was a 2477 // managed user. 2478 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2479 } 2480 2481 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2482 int res; 2483 try { 2484 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 2485 new IStopUserCallback.Stub() { 2486 @Override 2487 public void userStopped(int userId) { 2488 finishRemoveUser(userId); 2489 } 2490 @Override 2491 public void userStopAborted(int userId) { 2492 } 2493 }); 2494 } catch (RemoteException e) { 2495 return false; 2496 } 2497 return res == ActivityManager.USER_OP_SUCCESS; 2498 } finally { 2499 Binder.restoreCallingIdentity(ident); 2500 } 2501 } 2502 2503 void finishRemoveUser(final int userHandle) { 2504 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2505 // Let other services shutdown any activity and clean up their state before completely 2506 // wiping the user's system directory and removing from the user list 2507 long ident = Binder.clearCallingIdentity(); 2508 try { 2509 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2510 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2511 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2512 android.Manifest.permission.MANAGE_USERS, 2513 2514 new BroadcastReceiver() { 2515 @Override 2516 public void onReceive(Context context, Intent intent) { 2517 if (DBG) { 2518 Slog.i(LOG_TAG, 2519 "USER_REMOVED broadcast sent, cleaning up user data " 2520 + userHandle); 2521 } 2522 new Thread() { 2523 @Override 2524 public void run() { 2525 // Clean up any ActivityManager state 2526 LocalServices.getService(ActivityManagerInternal.class) 2527 .onUserRemoved(userHandle); 2528 removeUserState(userHandle); 2529 } 2530 }.start(); 2531 } 2532 }, 2533 2534 null, Activity.RESULT_OK, null, null); 2535 } finally { 2536 Binder.restoreCallingIdentity(ident); 2537 } 2538 } 2539 2540 private void removeUserState(final int userHandle) { 2541 try { 2542 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2543 } catch (IllegalStateException e) { 2544 // This may be simply because the user was partially created. 2545 Slog.i(LOG_TAG, 2546 "Destroying key for user " + userHandle + " failed, continuing anyway", e); 2547 } 2548 2549 // Cleanup gatekeeper secure user id 2550 try { 2551 final IGateKeeperService gk = GateKeeper.getService(); 2552 if (gk != null) { 2553 gk.clearSecureUserId(userHandle); 2554 } 2555 } catch (Exception ex) { 2556 Slog.w(LOG_TAG, "unable to clear GK secure user id"); 2557 } 2558 2559 // Cleanup package manager settings 2560 mPm.cleanUpUser(this, userHandle); 2561 2562 // Clean up all data before removing metadata 2563 mPm.destroyUserData(userHandle, 2564 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 2565 2566 // Remove this user from the list 2567 synchronized (mUsersLock) { 2568 mUsers.remove(userHandle); 2569 mIsUserManaged.delete(userHandle); 2570 } 2571 synchronized (mUserStates) { 2572 mUserStates.delete(userHandle); 2573 } 2574 synchronized (mRestrictionsLock) { 2575 mBaseUserRestrictions.remove(userHandle); 2576 mAppliedUserRestrictions.remove(userHandle); 2577 mCachedEffectiveUserRestrictions.remove(userHandle); 2578 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2579 } 2580 // Update the user list 2581 synchronized (mPackagesLock) { 2582 writeUserListLP(); 2583 } 2584 // Remove user file 2585 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2586 userFile.delete(); 2587 updateUserIds(); 2588 } 2589 2590 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2591 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2592 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2593 Intent.FLAG_RECEIVER_FOREGROUND); 2594 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2595 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2596 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2597 } 2598 2599 @Override 2600 public Bundle getApplicationRestrictions(String packageName) { 2601 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2602 } 2603 2604 @Override 2605 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2606 if (UserHandle.getCallingUserId() != userId 2607 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2608 checkSystemOrRoot("get application restrictions for other users/apps"); 2609 } 2610 synchronized (mPackagesLock) { 2611 // Read the restrictions from XML 2612 return readApplicationRestrictionsLP(packageName, userId); 2613 } 2614 } 2615 2616 @Override 2617 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2618 int userId) { 2619 checkSystemOrRoot("set application restrictions"); 2620 if (restrictions != null) { 2621 restrictions.setDefusable(true); 2622 } 2623 synchronized (mPackagesLock) { 2624 if (restrictions == null || restrictions.isEmpty()) { 2625 cleanAppRestrictionsForPackage(packageName, userId); 2626 } else { 2627 // Write the restrictions to XML 2628 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2629 } 2630 } 2631 2632 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2633 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2634 changeIntent.setPackage(packageName); 2635 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2636 mContext.sendBroadcastAsUser(changeIntent, UserHandle.of(userId)); 2637 } 2638 2639 private int getUidForPackage(String packageName) { 2640 long ident = Binder.clearCallingIdentity(); 2641 try { 2642 return mContext.getPackageManager().getApplicationInfo(packageName, 2643 PackageManager.MATCH_UNINSTALLED_PACKAGES).uid; 2644 } catch (NameNotFoundException nnfe) { 2645 return -1; 2646 } finally { 2647 Binder.restoreCallingIdentity(ident); 2648 } 2649 } 2650 2651 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2652 AtomicFile restrictionsFile = 2653 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2654 packageToRestrictionsFileName(packageName))); 2655 return readApplicationRestrictionsLP(restrictionsFile); 2656 } 2657 2658 @VisibleForTesting 2659 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2660 final Bundle restrictions = new Bundle(); 2661 final ArrayList<String> values = new ArrayList<>(); 2662 if (!restrictionsFile.getBaseFile().exists()) { 2663 return restrictions; 2664 } 2665 2666 FileInputStream fis = null; 2667 try { 2668 fis = restrictionsFile.openRead(); 2669 XmlPullParser parser = Xml.newPullParser(); 2670 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2671 XmlUtils.nextElement(parser); 2672 if (parser.getEventType() != XmlPullParser.START_TAG) { 2673 Slog.e(LOG_TAG, "Unable to read restrictions file " 2674 + restrictionsFile.getBaseFile()); 2675 return restrictions; 2676 } 2677 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2678 readEntry(restrictions, values, parser); 2679 } 2680 } catch (IOException|XmlPullParserException e) { 2681 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2682 } finally { 2683 IoUtils.closeQuietly(fis); 2684 } 2685 return restrictions; 2686 } 2687 2688 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2689 XmlPullParser parser) throws XmlPullParserException, IOException { 2690 int type = parser.getEventType(); 2691 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2692 String key = parser.getAttributeValue(null, ATTR_KEY); 2693 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2694 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2695 if (multiple != null) { 2696 values.clear(); 2697 int count = Integer.parseInt(multiple); 2698 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2699 if (type == XmlPullParser.START_TAG 2700 && parser.getName().equals(TAG_VALUE)) { 2701 values.add(parser.nextText().trim()); 2702 count--; 2703 } 2704 } 2705 String [] valueStrings = new String[values.size()]; 2706 values.toArray(valueStrings); 2707 restrictions.putStringArray(key, valueStrings); 2708 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2709 restrictions.putBundle(key, readBundleEntry(parser, values)); 2710 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2711 final int outerDepth = parser.getDepth(); 2712 ArrayList<Bundle> bundleList = new ArrayList<>(); 2713 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2714 Bundle childBundle = readBundleEntry(parser, values); 2715 bundleList.add(childBundle); 2716 } 2717 restrictions.putParcelableArray(key, 2718 bundleList.toArray(new Bundle[bundleList.size()])); 2719 } else { 2720 String value = parser.nextText().trim(); 2721 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2722 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2723 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2724 restrictions.putInt(key, Integer.parseInt(value)); 2725 } else { 2726 restrictions.putString(key, value); 2727 } 2728 } 2729 } 2730 } 2731 2732 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2733 throws IOException, XmlPullParserException { 2734 Bundle childBundle = new Bundle(); 2735 final int outerDepth = parser.getDepth(); 2736 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2737 readEntry(childBundle, values, parser); 2738 } 2739 return childBundle; 2740 } 2741 2742 private void writeApplicationRestrictionsLP(String packageName, 2743 Bundle restrictions, int userId) { 2744 AtomicFile restrictionsFile = new AtomicFile( 2745 new File(Environment.getUserSystemDirectory(userId), 2746 packageToRestrictionsFileName(packageName))); 2747 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2748 } 2749 2750 @VisibleForTesting 2751 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2752 FileOutputStream fos = null; 2753 try { 2754 fos = restrictionsFile.startWrite(); 2755 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2756 2757 final XmlSerializer serializer = new FastXmlSerializer(); 2758 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2759 serializer.startDocument(null, true); 2760 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2761 2762 serializer.startTag(null, TAG_RESTRICTIONS); 2763 writeBundle(restrictions, serializer); 2764 serializer.endTag(null, TAG_RESTRICTIONS); 2765 2766 serializer.endDocument(); 2767 restrictionsFile.finishWrite(fos); 2768 } catch (Exception e) { 2769 restrictionsFile.failWrite(fos); 2770 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2771 } 2772 } 2773 2774 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2775 throws IOException { 2776 for (String key : restrictions.keySet()) { 2777 Object value = restrictions.get(key); 2778 serializer.startTag(null, TAG_ENTRY); 2779 serializer.attribute(null, ATTR_KEY, key); 2780 2781 if (value instanceof Boolean) { 2782 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2783 serializer.text(value.toString()); 2784 } else if (value instanceof Integer) { 2785 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2786 serializer.text(value.toString()); 2787 } else if (value == null || value instanceof String) { 2788 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2789 serializer.text(value != null ? (String) value : ""); 2790 } else if (value instanceof Bundle) { 2791 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2792 writeBundle((Bundle) value, serializer); 2793 } else if (value instanceof Parcelable[]) { 2794 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2795 Parcelable[] array = (Parcelable[]) value; 2796 for (Parcelable parcelable : array) { 2797 if (!(parcelable instanceof Bundle)) { 2798 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2799 } 2800 serializer.startTag(null, TAG_ENTRY); 2801 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2802 writeBundle((Bundle) parcelable, serializer); 2803 serializer.endTag(null, TAG_ENTRY); 2804 } 2805 } else { 2806 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2807 String[] values = (String[]) value; 2808 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2809 for (String choice : values) { 2810 serializer.startTag(null, TAG_VALUE); 2811 serializer.text(choice != null ? choice : ""); 2812 serializer.endTag(null, TAG_VALUE); 2813 } 2814 } 2815 serializer.endTag(null, TAG_ENTRY); 2816 } 2817 } 2818 2819 @Override 2820 public int getUserSerialNumber(int userHandle) { 2821 synchronized (mUsersLock) { 2822 if (!exists(userHandle)) return -1; 2823 return getUserInfoLU(userHandle).serialNumber; 2824 } 2825 } 2826 2827 @Override 2828 public int getUserHandle(int userSerialNumber) { 2829 synchronized (mUsersLock) { 2830 for (int userId : mUserIds) { 2831 UserInfo info = getUserInfoLU(userId); 2832 if (info != null && info.serialNumber == userSerialNumber) return userId; 2833 } 2834 // Not found 2835 return -1; 2836 } 2837 } 2838 2839 @Override 2840 public long getUserCreationTime(int userHandle) { 2841 int callingUserId = UserHandle.getCallingUserId(); 2842 UserInfo userInfo = null; 2843 synchronized (mUsersLock) { 2844 if (callingUserId == userHandle) { 2845 userInfo = getUserInfoLU(userHandle); 2846 } else { 2847 UserInfo parent = getProfileParentLU(userHandle); 2848 if (parent != null && parent.id == callingUserId) { 2849 userInfo = getUserInfoLU(userHandle); 2850 } 2851 } 2852 } 2853 if (userInfo == null) { 2854 throw new SecurityException("userHandle can only be the calling user or a managed " 2855 + "profile associated with this user"); 2856 } 2857 return userInfo.creationTime; 2858 } 2859 2860 /** 2861 * Caches the list of user ids in an array, adjusting the array size when necessary. 2862 */ 2863 private void updateUserIds() { 2864 int num = 0; 2865 synchronized (mUsersLock) { 2866 final int userSize = mUsers.size(); 2867 for (int i = 0; i < userSize; i++) { 2868 if (!mUsers.valueAt(i).info.partial) { 2869 num++; 2870 } 2871 } 2872 final int[] newUsers = new int[num]; 2873 int n = 0; 2874 for (int i = 0; i < userSize; i++) { 2875 if (!mUsers.valueAt(i).info.partial) { 2876 newUsers[n++] = mUsers.keyAt(i); 2877 } 2878 } 2879 mUserIds = newUsers; 2880 } 2881 } 2882 2883 /** 2884 * Called right before a user is started. This gives us a chance to prepare 2885 * app storage and apply any user restrictions. 2886 */ 2887 public void onBeforeStartUser(int userId) { 2888 UserInfo userInfo = getUserInfo(userId); 2889 if (userInfo == null) { 2890 return; 2891 } 2892 final int userSerial = userInfo.serialNumber; 2893 // Migrate only if build fingerprints mismatch 2894 boolean migrateAppsData = !Build.FINGERPRINT.equals(userInfo.lastLoggedInFingerprint); 2895 mPm.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_DE); 2896 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_DE, migrateAppsData); 2897 2898 if (userId != UserHandle.USER_SYSTEM) { 2899 synchronized (mRestrictionsLock) { 2900 applyUserRestrictionsLR(userId); 2901 } 2902 } 2903 2904 maybeInitializeDemoMode(userId); 2905 } 2906 2907 /** 2908 * Called right before a user is unlocked. This gives us a chance to prepare 2909 * app storage. 2910 */ 2911 public void onBeforeUnlockUser(@UserIdInt int userId) { 2912 UserInfo userInfo = getUserInfo(userId); 2913 if (userInfo == null) { 2914 return; 2915 } 2916 final int userSerial = userInfo.serialNumber; 2917 // Migrate only if build fingerprints mismatch 2918 boolean migrateAppsData = !Build.FINGERPRINT.equals(userInfo.lastLoggedInFingerprint); 2919 mPm.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_CE); 2920 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_CE, migrateAppsData); 2921 } 2922 2923 /** 2924 * Make a note of the last started time of a user and do some cleanup. 2925 * This is called with ActivityManagerService lock held. 2926 * @param userId the user that was just foregrounded 2927 */ 2928 public void onUserLoggedIn(@UserIdInt int userId) { 2929 UserData userData = getUserDataNoChecks(userId); 2930 if (userData == null || userData.info.partial) { 2931 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2932 return; 2933 } 2934 2935 final long now = System.currentTimeMillis(); 2936 if (now > EPOCH_PLUS_30_YEARS) { 2937 userData.info.lastLoggedInTime = now; 2938 } 2939 userData.info.lastLoggedInFingerprint = Build.FINGERPRINT; 2940 scheduleWriteUser(userData); 2941 } 2942 2943 private void maybeInitializeDemoMode(int userId) { 2944 if (UserManager.isDeviceInDemoMode(mContext) && userId != UserHandle.USER_SYSTEM) { 2945 String demoLauncher = 2946 mContext.getResources().getString( 2947 com.android.internal.R.string.config_demoModeLauncherComponent); 2948 if (!TextUtils.isEmpty(demoLauncher)) { 2949 ComponentName componentToEnable = ComponentName.unflattenFromString(demoLauncher); 2950 String demoLauncherPkg = componentToEnable.getPackageName(); 2951 try { 2952 final IPackageManager iPm = AppGlobals.getPackageManager(); 2953 iPm.setComponentEnabledSetting(componentToEnable, 2954 PackageManager.COMPONENT_ENABLED_STATE_ENABLED, /* flags= */ 0, 2955 /* userId= */ userId); 2956 iPm.setApplicationEnabledSetting(demoLauncherPkg, 2957 PackageManager.COMPONENT_ENABLED_STATE_ENABLED, /* flags= */ 0, 2958 /* userId= */ userId, null); 2959 } catch (RemoteException re) { 2960 // Internal, shouldn't happen 2961 } 2962 } 2963 } 2964 } 2965 2966 /** 2967 * Returns the next available user id, filling in any holes in the ids. 2968 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2969 * for data and battery stats collection, or unexpected cross-talk. 2970 */ 2971 private int getNextAvailableId() { 2972 synchronized (mUsersLock) { 2973 int i = MIN_USER_ID; 2974 while (i < MAX_USER_ID) { 2975 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2976 return i; 2977 } 2978 i++; 2979 } 2980 } 2981 throw new IllegalStateException("No user id available!"); 2982 } 2983 2984 private String packageToRestrictionsFileName(String packageName) { 2985 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2986 } 2987 2988 /** 2989 * Enforce that serial number stored in user directory inode matches the 2990 * given expected value. Gracefully sets the serial number if currently 2991 * undefined. 2992 * 2993 * @throws IOException when problem extracting serial number, or serial 2994 * number is mismatched. 2995 */ 2996 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2997 if (StorageManager.isFileEncryptedEmulatedOnly()) { 2998 // When we're emulating FBE, the directory may have been chmod 2999 // 000'ed, meaning we can't read the serial number to enforce it; 3000 // instead of destroying the user, just log a warning. 3001 Slog.w(LOG_TAG, "Device is emulating FBE; assuming current serial number is valid"); 3002 return; 3003 } 3004 3005 final int foundSerial = getSerialNumber(file); 3006 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 3007 3008 if (foundSerial == -1) { 3009 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 3010 try { 3011 setSerialNumber(file, serialNumber); 3012 } catch (IOException e) { 3013 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 3014 } 3015 3016 } else if (foundSerial != serialNumber) { 3017 throw new IOException("Found serial number " + foundSerial 3018 + " doesn't match expected " + serialNumber); 3019 } 3020 } 3021 3022 /** 3023 * Set serial number stored in user directory inode. 3024 * 3025 * @throws IOException if serial number was already set 3026 */ 3027 private static void setSerialNumber(File file, int serialNumber) 3028 throws IOException { 3029 try { 3030 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 3031 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 3032 } catch (ErrnoException e) { 3033 throw e.rethrowAsIOException(); 3034 } 3035 } 3036 3037 /** 3038 * Return serial number stored in user directory inode. 3039 * 3040 * @return parsed serial number, or -1 if not set 3041 */ 3042 private static int getSerialNumber(File file) throws IOException { 3043 try { 3044 final byte[] buf = new byte[256]; 3045 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 3046 final String serial = new String(buf, 0, len); 3047 try { 3048 return Integer.parseInt(serial); 3049 } catch (NumberFormatException e) { 3050 throw new IOException("Bad serial number: " + serial); 3051 } 3052 } catch (ErrnoException e) { 3053 if (e.errno == OsConstants.ENODATA) { 3054 return -1; 3055 } else { 3056 throw e.rethrowAsIOException(); 3057 } 3058 } 3059 } 3060 3061 @Override 3062 public void setSeedAccountData(int userId, String accountName, String accountType, 3063 PersistableBundle accountOptions, boolean persist) { 3064 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 3065 synchronized (mPackagesLock) { 3066 final UserData userData; 3067 synchronized (mUsersLock) { 3068 userData = getUserDataLU(userId); 3069 if (userData == null) { 3070 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 3071 return; 3072 } 3073 userData.seedAccountName = accountName; 3074 userData.seedAccountType = accountType; 3075 userData.seedAccountOptions = accountOptions; 3076 userData.persistSeedData = persist; 3077 } 3078 if (persist) { 3079 writeUserLP(userData); 3080 } 3081 } 3082 } 3083 3084 @Override 3085 public String getSeedAccountName() throws RemoteException { 3086 checkManageUsersPermission("Cannot get seed account information"); 3087 synchronized (mUsersLock) { 3088 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3089 return userData.seedAccountName; 3090 } 3091 } 3092 3093 @Override 3094 public String getSeedAccountType() throws RemoteException { 3095 checkManageUsersPermission("Cannot get seed account information"); 3096 synchronized (mUsersLock) { 3097 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3098 return userData.seedAccountType; 3099 } 3100 } 3101 3102 @Override 3103 public PersistableBundle getSeedAccountOptions() throws RemoteException { 3104 checkManageUsersPermission("Cannot get seed account information"); 3105 synchronized (mUsersLock) { 3106 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 3107 return userData.seedAccountOptions; 3108 } 3109 } 3110 3111 @Override 3112 public void clearSeedAccountData() throws RemoteException { 3113 checkManageUsersPermission("Cannot clear seed account information"); 3114 synchronized (mPackagesLock) { 3115 UserData userData; 3116 synchronized (mUsersLock) { 3117 userData = getUserDataLU(UserHandle.getCallingUserId()); 3118 if (userData == null) return; 3119 userData.clearSeedAccountData(); 3120 } 3121 writeUserLP(userData); 3122 } 3123 } 3124 3125 @Override 3126 public boolean someUserHasSeedAccount(String accountName, String accountType) 3127 throws RemoteException { 3128 checkManageUsersPermission("Cannot check seed account information"); 3129 synchronized (mUsersLock) { 3130 final int userSize = mUsers.size(); 3131 for (int i = 0; i < userSize; i++) { 3132 final UserData data = mUsers.valueAt(i); 3133 if (data.info.isInitialized()) continue; 3134 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 3135 continue; 3136 } 3137 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 3138 continue; 3139 } 3140 return true; 3141 } 3142 } 3143 return false; 3144 } 3145 3146 @Override 3147 public void onShellCommand(FileDescriptor in, FileDescriptor out, 3148 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 3149 (new Shell()).exec(this, in, out, err, args, resultReceiver); 3150 } 3151 3152 int onShellCommand(Shell shell, String cmd) { 3153 if (cmd == null) { 3154 return shell.handleDefaultCommands(cmd); 3155 } 3156 3157 final PrintWriter pw = shell.getOutPrintWriter(); 3158 try { 3159 switch(cmd) { 3160 case "list": 3161 return runList(pw); 3162 } 3163 } catch (RemoteException e) { 3164 pw.println("Remote exception: " + e); 3165 } 3166 return -1; 3167 } 3168 3169 private int runList(PrintWriter pw) throws RemoteException { 3170 final IActivityManager am = ActivityManagerNative.getDefault(); 3171 final List<UserInfo> users = getUsers(false); 3172 if (users == null) { 3173 pw.println("Error: couldn't get users"); 3174 return 1; 3175 } else { 3176 pw.println("Users:"); 3177 for (int i = 0; i < users.size(); i++) { 3178 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 3179 pw.println("\t" + users.get(i).toString() + running); 3180 } 3181 return 0; 3182 } 3183 } 3184 3185 @Override 3186 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3187 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 3188 != PackageManager.PERMISSION_GRANTED) { 3189 pw.println("Permission Denial: can't dump UserManager from from pid=" 3190 + Binder.getCallingPid() 3191 + ", uid=" + Binder.getCallingUid() 3192 + " without permission " 3193 + android.Manifest.permission.DUMP); 3194 return; 3195 } 3196 3197 long now = System.currentTimeMillis(); 3198 StringBuilder sb = new StringBuilder(); 3199 synchronized (mPackagesLock) { 3200 synchronized (mUsersLock) { 3201 pw.println("Users:"); 3202 for (int i = 0; i < mUsers.size(); i++) { 3203 UserData userData = mUsers.valueAt(i); 3204 if (userData == null) { 3205 continue; 3206 } 3207 UserInfo userInfo = userData.info; 3208 final int userId = userInfo.id; 3209 pw.print(" "); pw.print(userInfo); 3210 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 3211 if (mRemovingUserIds.get(userId)) { 3212 pw.print(" <removing> "); 3213 } 3214 if (userInfo.partial) { 3215 pw.print(" <partial>"); 3216 } 3217 pw.println(); 3218 pw.print(" Created: "); 3219 if (userInfo.creationTime == 0) { 3220 pw.println("<unknown>"); 3221 } else { 3222 sb.setLength(0); 3223 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 3224 sb.append(" ago"); 3225 pw.println(sb); 3226 } 3227 pw.print(" Last logged in: "); 3228 if (userInfo.lastLoggedInTime == 0) { 3229 pw.println("<unknown>"); 3230 } else { 3231 sb.setLength(0); 3232 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 3233 sb.append(" ago"); 3234 pw.println(sb); 3235 } 3236 pw.print(" Last logged in fingerprint: "); 3237 pw.println(userInfo.lastLoggedInFingerprint); 3238 pw.print(" Has profile owner: "); 3239 pw.println(mIsUserManaged.get(userId)); 3240 pw.println(" Restrictions:"); 3241 synchronized (mRestrictionsLock) { 3242 UserRestrictionsUtils.dumpRestrictions( 3243 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 3244 pw.println(" Device policy local restrictions:"); 3245 UserRestrictionsUtils.dumpRestrictions( 3246 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 3247 pw.println(" Effective restrictions:"); 3248 UserRestrictionsUtils.dumpRestrictions( 3249 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 3250 } 3251 3252 if (userData.account != null) { 3253 pw.print(" Account name: " + userData.account); 3254 pw.println(); 3255 } 3256 3257 if (userData.seedAccountName != null) { 3258 pw.print(" Seed account name: " + userData.seedAccountName); 3259 pw.println(); 3260 if (userData.seedAccountType != null) { 3261 pw.print(" account type: " + userData.seedAccountType); 3262 pw.println(); 3263 } 3264 if (userData.seedAccountOptions != null) { 3265 pw.print(" account options exist"); 3266 pw.println(); 3267 } 3268 } 3269 } 3270 } 3271 pw.println(); 3272 pw.println(" Device policy global restrictions:"); 3273 synchronized (mRestrictionsLock) { 3274 UserRestrictionsUtils 3275 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 3276 } 3277 pw.println(); 3278 pw.println(" Global restrictions owner id:" + mGlobalRestrictionOwnerUserId); 3279 pw.println(); 3280 pw.println(" Guest restrictions:"); 3281 synchronized (mGuestRestrictions) { 3282 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 3283 } 3284 synchronized (mUsersLock) { 3285 pw.println(); 3286 pw.println(" Device managed: " + mIsDeviceManaged); 3287 } 3288 synchronized (mUserStates) { 3289 pw.println(" Started users state: " + mUserStates); 3290 } 3291 // Dump some capabilities 3292 pw.println(); 3293 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 3294 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 3295 pw.println(" All guests ephemeral: " + Resources.getSystem().getBoolean( 3296 com.android.internal.R.bool.config_guestUserEphemeral)); 3297 } 3298 } 3299 3300 final class MainHandler extends Handler { 3301 3302 @Override 3303 public void handleMessage(Message msg) { 3304 switch (msg.what) { 3305 case WRITE_USER_MSG: 3306 removeMessages(WRITE_USER_MSG, msg.obj); 3307 synchronized (mPackagesLock) { 3308 int userId = ((UserData) msg.obj).info.id; 3309 UserData userData = getUserDataNoChecks(userId); 3310 if (userData != null) { 3311 writeUserLP(userData); 3312 } 3313 } 3314 } 3315 } 3316 } 3317 3318 /** 3319 * @param userId 3320 * @return whether the user has been initialized yet 3321 */ 3322 boolean isInitialized(int userId) { 3323 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 3324 } 3325 3326 private class LocalService extends UserManagerInternal { 3327 @Override 3328 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 3329 @Nullable Bundle globalRestrictions) { 3330 UserManagerService.this.setDevicePolicyUserRestrictionsInner(userId, localRestrictions, 3331 globalRestrictions); 3332 } 3333 3334 @Override 3335 public Bundle getBaseUserRestrictions(int userId) { 3336 synchronized (mRestrictionsLock) { 3337 return mBaseUserRestrictions.get(userId); 3338 } 3339 } 3340 3341 @Override 3342 public void setBaseUserRestrictionsByDpmsForMigration( 3343 int userId, Bundle baseRestrictions) { 3344 synchronized (mRestrictionsLock) { 3345 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 3346 invalidateEffectiveUserRestrictionsLR(userId); 3347 } 3348 3349 final UserData userData = getUserDataNoChecks(userId); 3350 synchronized (mPackagesLock) { 3351 if (userData != null) { 3352 writeUserLP(userData); 3353 } else { 3354 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 3355 } 3356 } 3357 } 3358 3359 @Override 3360 public boolean getUserRestriction(int userId, String key) { 3361 return getUserRestrictions(userId).getBoolean(key); 3362 } 3363 3364 @Override 3365 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 3366 synchronized (mUserRestrictionsListeners) { 3367 mUserRestrictionsListeners.add(listener); 3368 } 3369 } 3370 3371 @Override 3372 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 3373 synchronized (mUserRestrictionsListeners) { 3374 mUserRestrictionsListeners.remove(listener); 3375 } 3376 } 3377 3378 @Override 3379 public void setDeviceManaged(boolean isManaged) { 3380 synchronized (mUsersLock) { 3381 mIsDeviceManaged = isManaged; 3382 } 3383 } 3384 3385 @Override 3386 public void setUserManaged(int userId, boolean isManaged) { 3387 synchronized (mUsersLock) { 3388 mIsUserManaged.put(userId, isManaged); 3389 } 3390 } 3391 3392 @Override 3393 public void setUserIcon(int userId, Bitmap bitmap) { 3394 long ident = Binder.clearCallingIdentity(); 3395 try { 3396 synchronized (mPackagesLock) { 3397 UserData userData = getUserDataNoChecks(userId); 3398 if (userData == null || userData.info.partial) { 3399 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 3400 return; 3401 } 3402 writeBitmapLP(userData.info, bitmap); 3403 writeUserLP(userData); 3404 } 3405 sendUserInfoChangedBroadcast(userId); 3406 } finally { 3407 Binder.restoreCallingIdentity(ident); 3408 } 3409 } 3410 3411 @Override 3412 public void setForceEphemeralUsers(boolean forceEphemeralUsers) { 3413 synchronized (mUsersLock) { 3414 mForceEphemeralUsers = forceEphemeralUsers; 3415 } 3416 } 3417 3418 @Override 3419 public void removeAllUsers() { 3420 if (UserHandle.USER_SYSTEM == ActivityManager.getCurrentUser()) { 3421 // Remove the non-system users straight away. 3422 removeNonSystemUsers(); 3423 } else { 3424 // Switch to the system user first and then remove the other users. 3425 BroadcastReceiver userSwitchedReceiver = new BroadcastReceiver() { 3426 @Override 3427 public void onReceive(Context context, Intent intent) { 3428 int userId = 3429 intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3430 if (userId != UserHandle.USER_SYSTEM) { 3431 return; 3432 } 3433 mContext.unregisterReceiver(this); 3434 removeNonSystemUsers(); 3435 } 3436 }; 3437 IntentFilter userSwitchedFilter = new IntentFilter(); 3438 userSwitchedFilter.addAction(Intent.ACTION_USER_SWITCHED); 3439 mContext.registerReceiver( 3440 userSwitchedReceiver, userSwitchedFilter, null, mHandler); 3441 3442 // Switch to the system user. 3443 ActivityManager am = 3444 (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 3445 am.switchUser(UserHandle.USER_SYSTEM); 3446 } 3447 } 3448 3449 @Override 3450 public void onEphemeralUserStop(int userId) { 3451 synchronized (mUsersLock) { 3452 UserInfo userInfo = getUserInfoLU(userId); 3453 if (userInfo != null && userInfo.isEphemeral()) { 3454 // Do not allow switching back to the ephemeral user again as the user is going 3455 // to be deleted. 3456 userInfo.flags |= UserInfo.FLAG_DISABLED; 3457 if (userInfo.isGuest()) { 3458 // Indicate that the guest will be deleted after it stops. 3459 userInfo.guestToRemove = true; 3460 } 3461 } 3462 } 3463 } 3464 3465 @Override 3466 public UserInfo createUserEvenWhenDisallowed(String name, int flags) { 3467 UserInfo user = createUserInternalUnchecked(name, flags, UserHandle.USER_NULL); 3468 // Keep this in sync with UserManager.createUser 3469 if (user != null && !user.isAdmin()) { 3470 setUserRestriction(UserManager.DISALLOW_SMS, true, user.id); 3471 setUserRestriction(UserManager.DISALLOW_OUTGOING_CALLS, true, user.id); 3472 } 3473 return user; 3474 } 3475 3476 @Override 3477 public boolean isUserRunning(int userId) { 3478 synchronized (mUserStates) { 3479 return mUserStates.get(userId, -1) >= 0; 3480 } 3481 } 3482 3483 @Override 3484 public void setUserState(int userId, int userState) { 3485 synchronized (mUserStates) { 3486 mUserStates.put(userId, userState); 3487 } 3488 } 3489 3490 @Override 3491 public void removeUserState(int userId) { 3492 synchronized (mUserStates) { 3493 mUserStates.delete(userId); 3494 } 3495 } 3496 3497 @Override 3498 public boolean isUserUnlockingOrUnlocked(int userId) { 3499 synchronized (mUserStates) { 3500 int state = mUserStates.get(userId, -1); 3501 return (state == UserState.STATE_RUNNING_UNLOCKING) 3502 || (state == UserState.STATE_RUNNING_UNLOCKED); 3503 } 3504 } 3505 } 3506 3507 /* Remove all the users except of the system one. */ 3508 private void removeNonSystemUsers() { 3509 ArrayList<UserInfo> usersToRemove = new ArrayList<>(); 3510 synchronized (mUsersLock) { 3511 final int userSize = mUsers.size(); 3512 for (int i = 0; i < userSize; i++) { 3513 UserInfo ui = mUsers.valueAt(i).info; 3514 if (ui.id != UserHandle.USER_SYSTEM) { 3515 usersToRemove.add(ui); 3516 } 3517 } 3518 } 3519 for (UserInfo ui: usersToRemove) { 3520 removeUser(ui.id); 3521 } 3522 } 3523 3524 private class Shell extends ShellCommand { 3525 @Override 3526 public int onCommand(String cmd) { 3527 return onShellCommand(this, cmd); 3528 } 3529 3530 @Override 3531 public void onHelp() { 3532 final PrintWriter pw = getOutPrintWriter(); 3533 pw.println("User manager (user) commands:"); 3534 pw.println(" help"); 3535 pw.println(" Print this help text."); 3536 pw.println(""); 3537 pw.println(" list"); 3538 pw.println(" Prints all users on the system."); 3539 } 3540 } 3541 3542 private static void debug(String message) { 3543 Log.d(LOG_TAG, message + 3544 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 3545 } 3546} 3547