UserManagerService.java revision e95057ade126e9e159fe05b69c32f85f7891490f
1 2/* 3 * Copyright (C) 2011 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18package com.android.server.pm; 19 20import android.Manifest; 21import android.annotation.NonNull; 22import android.annotation.Nullable; 23import android.annotation.UserIdInt; 24import android.app.Activity; 25import android.app.ActivityManager; 26import android.app.ActivityManagerInternal; 27import android.app.ActivityManagerNative; 28import android.app.IActivityManager; 29import android.app.IStopUserCallback; 30import android.content.BroadcastReceiver; 31import android.content.Context; 32import android.content.Intent; 33import android.content.IntentFilter; 34import android.content.pm.PackageManager; 35import android.content.pm.PackageManager.NameNotFoundException; 36import android.content.pm.UserInfo; 37import android.content.res.Resources; 38import android.graphics.Bitmap; 39import android.os.Binder; 40import android.os.Build; 41import android.os.Bundle; 42import android.os.Debug; 43import android.os.Environment; 44import android.os.FileUtils; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.IUserManager; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 50import android.os.Parcelable; 51import android.os.PersistableBundle; 52import android.os.Process; 53import android.os.RemoteException; 54import android.os.ResultReceiver; 55import android.os.SELinux; 56import android.os.ServiceManager; 57import android.os.ShellCommand; 58import android.os.UserHandle; 59import android.os.UserManager; 60import android.os.UserManagerInternal; 61import android.os.UserManagerInternal.UserRestrictionsListener; 62import android.os.storage.StorageManager; 63import android.os.storage.VolumeInfo; 64import android.system.ErrnoException; 65import android.system.Os; 66import android.system.OsConstants; 67import android.util.AtomicFile; 68import android.util.Log; 69import android.util.Slog; 70import android.util.SparseArray; 71import android.util.SparseBooleanArray; 72import android.util.TimeUtils; 73import android.util.Xml; 74 75import com.android.internal.annotations.GuardedBy; 76import com.android.internal.annotations.VisibleForTesting; 77import com.android.internal.app.IAppOpsService; 78import com.android.internal.logging.MetricsLogger; 79import com.android.internal.util.FastXmlSerializer; 80import com.android.internal.util.Preconditions; 81import com.android.internal.util.XmlUtils; 82import com.android.internal.widget.LockPatternUtils; 83import com.android.server.LocalServices; 84 85import libcore.io.IoUtils; 86import libcore.util.Objects; 87 88import org.xmlpull.v1.XmlPullParser; 89import org.xmlpull.v1.XmlPullParserException; 90import org.xmlpull.v1.XmlSerializer; 91 92import java.io.BufferedOutputStream; 93import java.io.File; 94import java.io.FileDescriptor; 95import java.io.FileInputStream; 96import java.io.FileNotFoundException; 97import java.io.FileOutputStream; 98import java.io.IOException; 99import java.io.PrintWriter; 100import java.nio.charset.StandardCharsets; 101import java.util.ArrayList; 102import java.util.List; 103 104/** 105 * Service for {@link UserManager}. 106 * 107 * Method naming convention: 108 * <ul> 109 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 110 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 111 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 112 * </ul> 113 */ 114public class UserManagerService extends IUserManager.Stub { 115 private static final String LOG_TAG = "UserManagerService"; 116 static final boolean DBG = false; // DO NOT SUBMIT WITH TRUE 117 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 118 119 private static final String TAG_NAME = "name"; 120 private static final String TAG_ACCOUNT = "account"; 121 private static final String ATTR_FLAGS = "flags"; 122 private static final String ATTR_ICON_PATH = "icon"; 123 private static final String ATTR_ID = "id"; 124 private static final String ATTR_CREATION_TIME = "created"; 125 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 126 private static final String ATTR_LAST_LOGGED_IN_FINGERPRINT = "lastLoggedInFingerprint"; 127 private static final String ATTR_SERIAL_NO = "serialNumber"; 128 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 129 private static final String ATTR_PARTIAL = "partial"; 130 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 131 private static final String ATTR_USER_VERSION = "version"; 132 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 133 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 134 private static final String ATTR_SEED_ACCOUNT_NAME = "seedAccountName"; 135 private static final String ATTR_SEED_ACCOUNT_TYPE = "seedAccountType"; 136 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 137 private static final String TAG_USERS = "users"; 138 private static final String TAG_USER = "user"; 139 private static final String TAG_RESTRICTIONS = "restrictions"; 140 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 141 private static final String TAG_ENTRY = "entry"; 142 private static final String TAG_VALUE = "value"; 143 private static final String TAG_SEED_ACCOUNT_OPTIONS = "seedAccountOptions"; 144 private static final String ATTR_KEY = "key"; 145 private static final String ATTR_VALUE_TYPE = "type"; 146 private static final String ATTR_MULTIPLE = "m"; 147 148 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 149 private static final String ATTR_TYPE_STRING = "s"; 150 private static final String ATTR_TYPE_BOOLEAN = "b"; 151 private static final String ATTR_TYPE_INTEGER = "i"; 152 private static final String ATTR_TYPE_BUNDLE = "B"; 153 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 154 155 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 156 private static final String USER_LIST_FILENAME = "userlist.xml"; 157 private static final String USER_PHOTO_FILENAME = "photo.png"; 158 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 159 160 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 161 private static final String XML_SUFFIX = ".xml"; 162 163 private static final int MIN_USER_ID = 10; 164 // We need to keep process uid within Integer.MAX_VALUE. 165 private static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 166 167 private static final int USER_VERSION = 6; 168 169 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 170 171 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 172 // without first making sure that the rest of the framework is prepared for it. 173 private static final int MAX_MANAGED_PROFILES = 1; 174 175 static final int WRITE_USER_MSG = 1; 176 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 177 178 private static final String XATTR_SERIAL = "user.serial"; 179 180 // Tron counters 181 private static final String TRON_GUEST_CREATED = "users_guest_created"; 182 private static final String TRON_USER_CREATED = "users_user_created"; 183 184 private final Context mContext; 185 private final PackageManagerService mPm; 186 private final Object mPackagesLock; 187 // Short-term lock for internal state, when interaction/sync with PM is not required 188 private final Object mUsersLock = new Object(); 189 private final Object mRestrictionsLock = new Object(); 190 191 private final Handler mHandler; 192 193 private final File mUsersDir; 194 private final File mUserListFile; 195 196 private static final IBinder mUserRestriconToken = new Binder(); 197 198 /** 199 * User-related information that is used for persisting to flash. Only UserInfo is 200 * directly exposed to other system apps. 201 */ 202 private static class UserData { 203 // Basic user information and properties 204 UserInfo info; 205 // Account name used when there is a strong association between a user and an account 206 String account; 207 // Account information for seeding into a newly created user. This could also be 208 // used for login validation for an existing user, for updating their credentials. 209 // In the latter case, data may not need to be persisted as it is only valid for the 210 // current login session. 211 String seedAccountName; 212 String seedAccountType; 213 PersistableBundle seedAccountOptions; 214 // Whether to perist the seed account information to be available after a boot 215 boolean persistSeedData; 216 217 void clearSeedAccountData() { 218 seedAccountName = null; 219 seedAccountType = null; 220 seedAccountOptions = null; 221 persistSeedData = false; 222 } 223 } 224 225 @GuardedBy("mUsersLock") 226 private final SparseArray<UserData> mUsers = new SparseArray<>(); 227 228 /** 229 * User restrictions set via UserManager. This doesn't include restrictions set by 230 * device owner / profile owners. 231 * 232 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 233 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 234 * maybe shared between {@link #mBaseUserRestrictions} and 235 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 236 * (Otherwise we won't be able to detect what restrictions have changed in 237 * {@link #updateUserRestrictionsInternalLR}. 238 */ 239 @GuardedBy("mRestrictionsLock") 240 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 241 242 /** 243 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 244 * with device / profile owner restrictions. We'll initialize it lazily; use 245 * {@link #getEffectiveUserRestrictions} to access it. 246 * 247 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 248 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 249 * maybe shared between {@link #mBaseUserRestrictions} and 250 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 251 * (Otherwise we won't be able to detect what restrictions have changed in 252 * {@link #updateUserRestrictionsInternalLR}. 253 */ 254 @GuardedBy("mRestrictionsLock") 255 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 256 257 /** 258 * User restrictions that have already been applied in 259 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 260 * that have changed since the last 261 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 262 */ 263 @GuardedBy("mRestrictionsLock") 264 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 265 266 /** 267 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 268 * that should be applied to all users, including guests. 269 */ 270 @GuardedBy("mRestrictionsLock") 271 private Bundle mDevicePolicyGlobalUserRestrictions; 272 273 /** 274 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 275 * for each user. 276 */ 277 @GuardedBy("mRestrictionsLock") 278 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 279 280 @GuardedBy("mGuestRestrictions") 281 private final Bundle mGuestRestrictions = new Bundle(); 282 283 /** 284 * Set of user IDs being actively removed. Removed IDs linger in this set 285 * for several seconds to work around a VFS caching issue. 286 */ 287 @GuardedBy("mUsersLock") 288 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 289 290 @GuardedBy("mUsersLock") 291 private int[] mUserIds; 292 @GuardedBy("mPackagesLock") 293 private int mNextSerialNumber; 294 private int mUserVersion = 0; 295 296 private IAppOpsService mAppOpsService; 297 298 private final LocalService mLocalService; 299 300 @GuardedBy("mUsersLock") 301 private boolean mIsDeviceManaged; 302 303 @GuardedBy("mUsersLock") 304 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 305 306 @GuardedBy("mUserRestrictionsListeners") 307 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 308 new ArrayList<>(); 309 310 private final LockPatternUtils mLockPatternUtils; 311 312 /** 313 * Whether all users should be created ephemeral. 314 */ 315 @GuardedBy("mUsersLock") 316 private boolean mForceEphemeralUsers; 317 318 private static UserManagerService sInstance; 319 320 public static UserManagerService getInstance() { 321 synchronized (UserManagerService.class) { 322 return sInstance; 323 } 324 } 325 326 @VisibleForTesting 327 UserManagerService(File dataDir) { 328 this(null, null, new Object(), dataDir); 329 } 330 331 /** 332 * Called by package manager to create the service. This is closely 333 * associated with the package manager, and the given lock is the 334 * package manager's own lock. 335 */ 336 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 337 this(context, pm, packagesLock, Environment.getDataDirectory()); 338 } 339 340 private UserManagerService(Context context, PackageManagerService pm, 341 Object packagesLock, File dataDir) { 342 mContext = context; 343 mPm = pm; 344 mPackagesLock = packagesLock; 345 mHandler = new MainHandler(); 346 synchronized (mPackagesLock) { 347 mUsersDir = new File(dataDir, USER_INFO_DIR); 348 mUsersDir.mkdirs(); 349 // Make zeroth user directory, for services to migrate their files to that location 350 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 351 userZeroDir.mkdirs(); 352 FileUtils.setPermissions(mUsersDir.toString(), 353 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 354 -1, -1); 355 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 356 initDefaultGuestRestrictions(); 357 readUserListLP(); 358 sInstance = this; 359 } 360 mLocalService = new LocalService(); 361 LocalServices.addService(UserManagerInternal.class, mLocalService); 362 mLockPatternUtils = new LockPatternUtils(mContext); 363 } 364 365 void systemReady() { 366 // Prune out any partially created, partially removed and ephemeral users. 367 ArrayList<UserInfo> partials = new ArrayList<>(); 368 synchronized (mUsersLock) { 369 final int userSize = mUsers.size(); 370 for (int i = 0; i < userSize; i++) { 371 UserInfo ui = mUsers.valueAt(i).info; 372 if ((ui.partial || ui.guestToRemove || ui.isEphemeral()) && i != 0) { 373 partials.add(ui); 374 } 375 } 376 } 377 final int partialsSize = partials.size(); 378 for (int i = 0; i < partialsSize; i++) { 379 UserInfo ui = partials.get(i); 380 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 381 + " (name=" + ui.name + ")"); 382 removeUserState(ui.id); 383 } 384 385 mAppOpsService = IAppOpsService.Stub.asInterface( 386 ServiceManager.getService(Context.APP_OPS_SERVICE)); 387 388 synchronized (mRestrictionsLock) { 389 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 390 } 391 392 UserInfo currentGuestUser = findCurrentGuestUser(); 393 if (currentGuestUser != null && !hasUserRestriction( 394 UserManager.DISALLOW_CONFIG_WIFI, currentGuestUser.id)) { 395 // If a guest user currently exists, apply the DISALLOW_CONFIG_WIFI option 396 // to it, in case this guest was created in a previous version where this 397 // user restriction was not a default guest restriction. 398 setUserRestriction(UserManager.DISALLOW_CONFIG_WIFI, true, currentGuestUser.id); 399 } 400 } 401 402 @Override 403 public String getUserAccount(int userId) { 404 checkManageUserAndAcrossUsersFullPermission("get user account"); 405 synchronized (mUsersLock) { 406 return mUsers.get(userId).account; 407 } 408 } 409 410 @Override 411 public void setUserAccount(int userId, String accountName) { 412 checkManageUserAndAcrossUsersFullPermission("set user account"); 413 UserData userToUpdate = null; 414 synchronized (mPackagesLock) { 415 synchronized (mUsersLock) { 416 final UserData userData = mUsers.get(userId); 417 if (userData == null) { 418 Slog.e(LOG_TAG, "User not found for setting user account: u" + userId); 419 return; 420 } 421 String currentAccount = userData.account; 422 if (!Objects.equal(currentAccount, accountName)) { 423 userData.account = accountName; 424 userToUpdate = userData; 425 } 426 } 427 428 if (userToUpdate != null) { 429 writeUserLP(userToUpdate); 430 } 431 } 432 } 433 434 @Override 435 public UserInfo getPrimaryUser() { 436 checkManageUsersPermission("query users"); 437 synchronized (mUsersLock) { 438 final int userSize = mUsers.size(); 439 for (int i = 0; i < userSize; i++) { 440 UserInfo ui = mUsers.valueAt(i).info; 441 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 442 return ui; 443 } 444 } 445 } 446 return null; 447 } 448 449 @Override 450 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 451 checkManageUsersPermission("query users"); 452 synchronized (mUsersLock) { 453 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 454 final int userSize = mUsers.size(); 455 for (int i = 0; i < userSize; i++) { 456 UserInfo ui = mUsers.valueAt(i).info; 457 if (ui.partial) { 458 continue; 459 } 460 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 461 users.add(userWithName(ui)); 462 } 463 } 464 return users; 465 } 466 } 467 468 @Override 469 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 470 if (userId != UserHandle.getCallingUserId()) { 471 checkManageUsersPermission("getting profiles related to user " + userId); 472 } 473 final long ident = Binder.clearCallingIdentity(); 474 try { 475 synchronized (mUsersLock) { 476 return getProfilesLU(userId, enabledOnly); 477 } 478 } finally { 479 Binder.restoreCallingIdentity(ident); 480 } 481 } 482 483 /** Assume permissions already checked and caller's identity cleared */ 484 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly) { 485 UserInfo user = getUserInfoLU(userId); 486 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 487 if (user == null) { 488 // Probably a dying user 489 return users; 490 } 491 final int userSize = mUsers.size(); 492 for (int i = 0; i < userSize; i++) { 493 UserInfo profile = mUsers.valueAt(i).info; 494 if (!isProfileOf(user, profile)) { 495 continue; 496 } 497 if (enabledOnly && !profile.isEnabled()) { 498 continue; 499 } 500 if (mRemovingUserIds.get(profile.id)) { 501 continue; 502 } 503 users.add(userWithName(profile)); 504 } 505 return users; 506 } 507 508 @Override 509 public int getCredentialOwnerProfile(int userHandle) { 510 checkManageUsersPermission("get the credential owner"); 511 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 512 synchronized (mUsersLock) { 513 UserInfo profileParent = getProfileParentLU(userHandle); 514 if (profileParent != null) { 515 return profileParent.id; 516 } 517 } 518 } 519 520 return userHandle; 521 } 522 523 @Override 524 public boolean isSameProfileGroup(int userId, int otherUserId) { 525 if (userId == otherUserId) return true; 526 checkManageUsersPermission("check if in the same profile group"); 527 synchronized (mPackagesLock) { 528 return isSameProfileGroupLP(userId, otherUserId); 529 } 530 } 531 532 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 533 synchronized (mUsersLock) { 534 UserInfo userInfo = getUserInfoLU(userId); 535 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 536 return false; 537 } 538 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 539 if (otherUserInfo == null 540 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 541 return false; 542 } 543 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 544 } 545 } 546 547 @Override 548 public UserInfo getProfileParent(int userHandle) { 549 checkManageUsersPermission("get the profile parent"); 550 synchronized (mUsersLock) { 551 return getProfileParentLU(userHandle); 552 } 553 } 554 555 private UserInfo getProfileParentLU(int userHandle) { 556 UserInfo profile = getUserInfoLU(userHandle); 557 if (profile == null) { 558 return null; 559 } 560 int parentUserId = profile.profileGroupId; 561 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 562 return null; 563 } else { 564 return getUserInfoLU(parentUserId); 565 } 566 } 567 568 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 569 return user.id == profile.id || 570 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 571 && user.profileGroupId == profile.profileGroupId); 572 } 573 574 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 575 UserHandle parentHandle, boolean inQuietMode) { 576 Intent intent = new Intent(); 577 if (inQuietMode) { 578 intent.setAction(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE); 579 } else { 580 intent.setAction(Intent.ACTION_MANAGED_PROFILE_AVAILABLE); 581 } 582 intent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 583 intent.putExtra(Intent.EXTRA_USER, profileHandle); 584 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 585 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 586 mContext.sendBroadcastAsUser(intent, parentHandle); 587 588 //TODO: remove once Launcher3 is updated. 589 Intent oldIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_AVAILABILITY_CHANGED); 590 oldIntent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 591 oldIntent.putExtra(Intent.EXTRA_USER, profileHandle); 592 oldIntent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 593 oldIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 594 mContext.sendBroadcastAsUser(oldIntent, parentHandle); 595 596 } 597 598 @Override 599 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 600 checkManageUsersPermission("silence profile"); 601 boolean changed = false; 602 UserInfo profile, parent; 603 synchronized (mPackagesLock) { 604 synchronized (mUsersLock) { 605 profile = getUserInfoLU(userHandle); 606 parent = getProfileParentLU(userHandle); 607 608 } 609 if (profile == null || !profile.isManagedProfile()) { 610 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 611 } 612 if (profile.isQuietModeEnabled() != enableQuietMode) { 613 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 614 writeUserLP(getUserDataLU(profile.id)); 615 changed = true; 616 } 617 } 618 if (changed) { 619 long identity = Binder.clearCallingIdentity(); 620 try { 621 if (enableQuietMode) { 622 ActivityManagerNative.getDefault().stopUser(userHandle, /* force */true, null); 623 } else { 624 ActivityManagerNative.getDefault().startUserInBackground(userHandle); 625 } 626 } catch (RemoteException e) { 627 Slog.e(LOG_TAG, "fail to start/stop user for quiet mode", e); 628 } finally { 629 Binder.restoreCallingIdentity(identity); 630 } 631 632 broadcastProfileAvailabilityChanges(profile.getUserHandle(), parent.getUserHandle(), 633 enableQuietMode); 634 } 635 } 636 637 @Override 638 public boolean isQuietModeEnabled(int userHandle) { 639 synchronized (mPackagesLock) { 640 UserInfo info; 641 synchronized (mUsersLock) { 642 info = getUserInfoLU(userHandle); 643 } 644 if (info == null || !info.isManagedProfile()) { 645 return false; 646 } 647 return info.isQuietModeEnabled(); 648 } 649 } 650 651 @Override 652 public void setUserEnabled(int userId) { 653 checkManageUsersPermission("enable user"); 654 synchronized (mPackagesLock) { 655 UserInfo info; 656 synchronized (mUsersLock) { 657 info = getUserInfoLU(userId); 658 } 659 if (info != null && !info.isEnabled()) { 660 info.flags ^= UserInfo.FLAG_DISABLED; 661 writeUserLP(getUserDataLU(info.id)); 662 } 663 } 664 } 665 666 @Override 667 public UserInfo getUserInfo(int userId) { 668 checkManageUsersPermission("query user"); 669 synchronized (mUsersLock) { 670 return userWithName(getUserInfoLU(userId)); 671 } 672 } 673 674 /** 675 * Returns a UserInfo object with the name filled in, for Owner, or the original 676 * if the name is already set. 677 */ 678 private UserInfo userWithName(UserInfo orig) { 679 if (orig != null && orig.name == null && orig.id == UserHandle.USER_SYSTEM) { 680 UserInfo withName = new UserInfo(orig); 681 withName.name = getOwnerName(); 682 return withName; 683 } else { 684 return orig; 685 } 686 } 687 688 @Override 689 public boolean isManagedProfile(int userId) { 690 int callingUserId = UserHandle.getCallingUserId(); 691 if (callingUserId != userId && !hasManageUsersPermission()) { 692 synchronized (mPackagesLock) { 693 if (!isSameProfileGroupLP(callingUserId, userId)) { 694 throw new SecurityException( 695 "You need MANAGE_USERS permission to: check if specified user a " + 696 "managed profile outside your profile group"); 697 } 698 } 699 } 700 synchronized (mUsersLock) { 701 UserInfo userInfo = getUserInfoLU(userId); 702 return userInfo != null && userInfo.isManagedProfile(); 703 } 704 } 705 706 @Override 707 public boolean isRestricted() { 708 synchronized (mUsersLock) { 709 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 710 } 711 } 712 713 @Override 714 public boolean canHaveRestrictedProfile(int userId) { 715 checkManageUsersPermission("canHaveRestrictedProfile"); 716 synchronized (mUsersLock) { 717 final UserInfo userInfo = getUserInfoLU(userId); 718 if (userInfo == null || !userInfo.canHaveProfile()) { 719 return false; 720 } 721 if (!userInfo.isAdmin()) { 722 return false; 723 } 724 // restricted profile can be created if there is no DO set and the admin user has no PO; 725 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 726 } 727 } 728 729 /* 730 * Should be locked on mUsers before calling this. 731 */ 732 private UserInfo getUserInfoLU(int userId) { 733 final UserData userData = mUsers.get(userId); 734 // If it is partial and not in the process of being removed, return as unknown user. 735 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 736 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 737 return null; 738 } 739 return userData != null ? userData.info : null; 740 } 741 742 private UserData getUserDataLU(int userId) { 743 final UserData userData = mUsers.get(userId); 744 // If it is partial and not in the process of being removed, return as unknown user. 745 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 746 return null; 747 } 748 return userData; 749 } 750 751 /** 752 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 753 * <p>No permissions checking or any addition checks are made</p> 754 */ 755 private UserInfo getUserInfoNoChecks(int userId) { 756 synchronized (mUsersLock) { 757 final UserData userData = mUsers.get(userId); 758 return userData != null ? userData.info : null; 759 } 760 } 761 762 /** 763 * Obtains {@link #mUsersLock} and return UserData from mUsers. 764 * <p>No permissions checking or any addition checks are made</p> 765 */ 766 private UserData getUserDataNoChecks(int userId) { 767 synchronized (mUsersLock) { 768 return mUsers.get(userId); 769 } 770 } 771 772 /** Called by PackageManagerService */ 773 public boolean exists(int userId) { 774 return getUserInfoNoChecks(userId) != null; 775 } 776 777 @Override 778 public void setUserName(int userId, String name) { 779 checkManageUsersPermission("rename users"); 780 boolean changed = false; 781 synchronized (mPackagesLock) { 782 UserData userData = getUserDataNoChecks(userId); 783 if (userData == null || userData.info.partial) { 784 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 785 return; 786 } 787 if (name != null && !name.equals(userData.info.name)) { 788 userData.info.name = name; 789 writeUserLP(userData); 790 changed = true; 791 } 792 } 793 if (changed) { 794 sendUserInfoChangedBroadcast(userId); 795 } 796 } 797 798 @Override 799 public void setUserIcon(int userId, Bitmap bitmap) { 800 checkManageUsersPermission("update users"); 801 if (hasUserRestriction(UserManager.DISALLOW_SET_USER_ICON, userId)) { 802 Log.w(LOG_TAG, "Cannot set user icon. DISALLOW_SET_USER_ICON is enabled."); 803 return; 804 } 805 mLocalService.setUserIcon(userId, bitmap); 806 } 807 808 809 810 private void sendUserInfoChangedBroadcast(int userId) { 811 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 812 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 813 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 814 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 815 } 816 817 @Override 818 public ParcelFileDescriptor getUserIcon(int targetUserId) { 819 String iconPath; 820 synchronized (mPackagesLock) { 821 UserInfo targetUserInfo = getUserInfoNoChecks(targetUserId); 822 if (targetUserInfo == null || targetUserInfo.partial) { 823 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + targetUserId); 824 return null; 825 } 826 827 final int callingUserId = UserHandle.getCallingUserId(); 828 final int callingGroupId = getUserInfoNoChecks(callingUserId).profileGroupId; 829 final int targetGroupId = targetUserInfo.profileGroupId; 830 final boolean sameGroup = (callingGroupId != UserInfo.NO_PROFILE_GROUP_ID 831 && callingGroupId == targetGroupId); 832 if ((callingUserId != targetUserId) && !sameGroup) { 833 checkManageUsersPermission("get the icon of a user who is not related"); 834 } 835 836 if (targetUserInfo.iconPath == null) { 837 return null; 838 } 839 iconPath = targetUserInfo.iconPath; 840 } 841 842 try { 843 return ParcelFileDescriptor.open( 844 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 845 } catch (FileNotFoundException e) { 846 Log.e(LOG_TAG, "Couldn't find icon file", e); 847 } 848 return null; 849 } 850 851 public void makeInitialized(int userId) { 852 checkManageUsersPermission("makeInitialized"); 853 boolean scheduleWriteUser = false; 854 UserData userData; 855 synchronized (mUsersLock) { 856 userData = mUsers.get(userId); 857 if (userData == null || userData.info.partial) { 858 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 859 return; 860 } 861 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 862 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 863 scheduleWriteUser = true; 864 } 865 } 866 if (scheduleWriteUser) { 867 scheduleWriteUser(userData); 868 } 869 } 870 871 /** 872 * If default guest restrictions haven't been initialized yet, add the basic 873 * restrictions. 874 */ 875 private void initDefaultGuestRestrictions() { 876 synchronized (mGuestRestrictions) { 877 if (mGuestRestrictions.isEmpty()) { 878 mGuestRestrictions.putBoolean(UserManager.DISALLOW_CONFIG_WIFI, true); 879 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 880 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 881 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 882 } 883 } 884 } 885 886 @Override 887 public Bundle getDefaultGuestRestrictions() { 888 checkManageUsersPermission("getDefaultGuestRestrictions"); 889 synchronized (mGuestRestrictions) { 890 return new Bundle(mGuestRestrictions); 891 } 892 } 893 894 @Override 895 public void setDefaultGuestRestrictions(Bundle restrictions) { 896 checkManageUsersPermission("setDefaultGuestRestrictions"); 897 synchronized (mGuestRestrictions) { 898 mGuestRestrictions.clear(); 899 mGuestRestrictions.putAll(restrictions); 900 } 901 synchronized (mPackagesLock) { 902 writeUserListLP(); 903 } 904 } 905 906 /** 907 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 908 */ 909 void setDevicePolicyUserRestrictionsInner(int userId, @NonNull Bundle local, 910 @Nullable Bundle global) { 911 Preconditions.checkNotNull(local); 912 boolean globalChanged = false; 913 boolean localChanged; 914 synchronized (mRestrictionsLock) { 915 if (global != null) { 916 // Update global. 917 globalChanged = !UserRestrictionsUtils.areEqual( 918 mDevicePolicyGlobalUserRestrictions, global); 919 if (globalChanged) { 920 mDevicePolicyGlobalUserRestrictions = global; 921 } 922 } 923 { 924 // Update local. 925 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 926 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 927 if (localChanged) { 928 mDevicePolicyLocalUserRestrictions.put(userId, local); 929 } 930 } 931 } 932 if (DBG) { 933 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 934 + " global=" + global + (globalChanged ? " (changed)" : "") 935 + " local=" + local + (localChanged ? " (changed)" : "") 936 ); 937 } 938 // Don't call them within the mRestrictionsLock. 939 synchronized (mPackagesLock) { 940 if (localChanged) { 941 writeUserLP(getUserDataNoChecks(userId)); 942 } 943 if (globalChanged) { 944 writeUserListLP(); 945 } 946 } 947 948 synchronized (mRestrictionsLock) { 949 if (globalChanged) { 950 applyUserRestrictionsForAllUsersLR(); 951 } else if (localChanged) { 952 applyUserRestrictionsLR(userId); 953 } 954 } 955 } 956 957 @GuardedBy("mRestrictionsLock") 958 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 959 final Bundle baseRestrictions = 960 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 961 final Bundle global = mDevicePolicyGlobalUserRestrictions; 962 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 963 964 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 965 // Common case first. 966 return baseRestrictions; 967 } 968 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 969 UserRestrictionsUtils.merge(effective, global); 970 UserRestrictionsUtils.merge(effective, local); 971 972 return effective; 973 } 974 975 @GuardedBy("mRestrictionsLock") 976 private void invalidateEffectiveUserRestrictionsLR(int userId) { 977 if (DBG) { 978 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 979 } 980 mCachedEffectiveUserRestrictions.remove(userId); 981 } 982 983 private Bundle getEffectiveUserRestrictions(int userId) { 984 synchronized (mRestrictionsLock) { 985 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 986 if (restrictions == null) { 987 restrictions = computeEffectiveUserRestrictionsLR(userId); 988 mCachedEffectiveUserRestrictions.put(userId, restrictions); 989 } 990 return restrictions; 991 } 992 } 993 994 /** @return a specific user restriction that's in effect currently. */ 995 @Override 996 public boolean hasUserRestriction(String restrictionKey, int userId) { 997 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 998 return false; 999 } 1000 Bundle restrictions = getEffectiveUserRestrictions(userId); 1001 return restrictions != null && restrictions.getBoolean(restrictionKey); 1002 } 1003 1004 /** 1005 * @return UserRestrictions that are in effect currently. This always returns a new 1006 * {@link Bundle}. 1007 */ 1008 @Override 1009 public Bundle getUserRestrictions(int userId) { 1010 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 1011 } 1012 1013 @Override 1014 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 1015 checkManageUsersPermission("hasBaseUserRestriction"); 1016 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1017 return false; 1018 } 1019 synchronized (mRestrictionsLock) { 1020 Bundle bundle = mBaseUserRestrictions.get(userId); 1021 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 1022 } 1023 } 1024 1025 @Override 1026 public void setUserRestriction(String key, boolean value, int userId) { 1027 checkManageUsersPermission("setUserRestriction"); 1028 if (!UserRestrictionsUtils.isValidRestriction(key)) { 1029 return; 1030 } 1031 synchronized (mRestrictionsLock) { 1032 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 1033 // a copy. 1034 final Bundle newRestrictions = UserRestrictionsUtils.clone( 1035 mBaseUserRestrictions.get(userId)); 1036 newRestrictions.putBoolean(key, value); 1037 1038 updateUserRestrictionsInternalLR(newRestrictions, userId); 1039 } 1040 } 1041 1042 /** 1043 * Optionally updating user restrictions, calculate the effective user restrictions and also 1044 * propagate to other services and system settings. 1045 * 1046 * @param newRestrictions User restrictions to set. 1047 * If null, will not update user restrictions and only does the propagation. 1048 * @param userId target user ID. 1049 */ 1050 @GuardedBy("mRestrictionsLock") 1051 private void updateUserRestrictionsInternalLR( 1052 @Nullable Bundle newRestrictions, int userId) { 1053 1054 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 1055 mAppliedUserRestrictions.get(userId)); 1056 1057 // Update base restrictions. 1058 if (newRestrictions != null) { 1059 // If newRestrictions == the current one, it's probably a bug. 1060 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 1061 1062 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 1063 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 1064 != newRestrictions); 1065 1066 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 1067 mBaseUserRestrictions.put(userId, newRestrictions); 1068 scheduleWriteUser(getUserDataNoChecks(userId)); 1069 } 1070 } 1071 1072 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 1073 1074 mCachedEffectiveUserRestrictions.put(userId, effective); 1075 1076 // Apply the new restrictions. 1077 if (DBG) { 1078 debug("Applying user restrictions: userId=" + userId 1079 + " new=" + effective + " prev=" + prevAppliedRestrictions); 1080 } 1081 1082 if (mAppOpsService != null) { // We skip it until system-ready. 1083 final long token = Binder.clearCallingIdentity(); 1084 try { 1085 mAppOpsService.setUserRestrictions(effective, mUserRestriconToken, userId); 1086 } catch (RemoteException e) { 1087 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1088 } finally { 1089 Binder.restoreCallingIdentity(token); 1090 } 1091 } 1092 1093 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1094 1095 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1096 } 1097 1098 private void propagateUserRestrictionsLR(final int userId, 1099 Bundle newRestrictions, Bundle prevRestrictions) { 1100 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1101 // actually, but we still need some kind of synchronization otherwise we might end up 1102 // calling listeners out-of-order, thus "LR". 1103 1104 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1105 return; 1106 } 1107 1108 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1109 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1110 1111 mHandler.post(new Runnable() { 1112 @Override 1113 public void run() { 1114 UserRestrictionsUtils.applyUserRestrictions( 1115 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1116 1117 final UserRestrictionsListener[] listeners; 1118 synchronized (mUserRestrictionsListeners) { 1119 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1120 mUserRestrictionsListeners.toArray(listeners); 1121 } 1122 for (int i = 0; i < listeners.length; i++) { 1123 listeners[i].onUserRestrictionsChanged(userId, 1124 newRestrictionsFinal, prevRestrictionsFinal); 1125 } 1126 } 1127 }); 1128 } 1129 1130 // Package private for the inner class. 1131 void applyUserRestrictionsLR(int userId) { 1132 updateUserRestrictionsInternalLR(null, userId); 1133 } 1134 1135 @GuardedBy("mRestrictionsLock") 1136 // Package private for the inner class. 1137 void applyUserRestrictionsForAllUsersLR() { 1138 if (DBG) { 1139 debug("applyUserRestrictionsForAllUsersLR"); 1140 } 1141 // First, invalidate all cached values. 1142 mCachedEffectiveUserRestrictions.clear(); 1143 1144 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 1145 // it on a handler. 1146 final Runnable r = new Runnable() { 1147 @Override 1148 public void run() { 1149 // Then get the list of running users. 1150 final int[] runningUsers; 1151 try { 1152 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 1153 } catch (RemoteException e) { 1154 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 1155 return; 1156 } 1157 // Then re-calculate the effective restrictions and apply, only for running users. 1158 // It's okay if a new user has started after the getRunningUserIds() call, 1159 // because we'll do the same thing (re-calculate the restrictions and apply) 1160 // when we start a user. 1161 synchronized (mRestrictionsLock) { 1162 for (int i = 0; i < runningUsers.length; i++) { 1163 applyUserRestrictionsLR(runningUsers[i]); 1164 } 1165 } 1166 } 1167 }; 1168 mHandler.post(r); 1169 } 1170 1171 /** 1172 * Check if we've hit the limit of how many users can be created. 1173 */ 1174 private boolean isUserLimitReached() { 1175 int count; 1176 synchronized (mUsersLock) { 1177 count = getAliveUsersExcludingGuestsCountLU(); 1178 } 1179 return count >= UserManager.getMaxSupportedUsers(); 1180 } 1181 1182 @Override 1183 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1184 checkManageUsersPermission("check if more managed profiles can be added."); 1185 if (ActivityManager.isLowRamDeviceStatic()) { 1186 return false; 1187 } 1188 if (!mContext.getPackageManager().hasSystemFeature( 1189 PackageManager.FEATURE_MANAGED_USERS)) { 1190 return false; 1191 } 1192 // Limit number of managed profiles that can be created 1193 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1194 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1195 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1196 return false; 1197 } 1198 synchronized(mUsersLock) { 1199 UserInfo userInfo = getUserInfoLU(userId); 1200 if (!userInfo.canHaveProfile()) { 1201 return false; 1202 } 1203 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1204 - profilesRemovedCount; 1205 // We allow creating a managed profile in the special case where there is only one user. 1206 return usersCountAfterRemoving == 1 1207 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1208 } 1209 } 1210 1211 private int getAliveUsersExcludingGuestsCountLU() { 1212 int aliveUserCount = 0; 1213 final int totalUserCount = mUsers.size(); 1214 // Skip over users being removed 1215 for (int i = 0; i < totalUserCount; i++) { 1216 UserInfo user = mUsers.valueAt(i).info; 1217 if (!mRemovingUserIds.get(user.id) 1218 && !user.isGuest() && !user.partial) { 1219 aliveUserCount++; 1220 } 1221 } 1222 return aliveUserCount; 1223 } 1224 1225 /** 1226 * Enforces that only the system UID or root's UID or apps that have the 1227 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1228 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1229 * permissions can make certain calls to the UserManager. 1230 * 1231 * @param message used as message if SecurityException is thrown 1232 * @throws SecurityException if the caller does not have enough privilege. 1233 */ 1234 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1235 final int uid = Binder.getCallingUid(); 1236 if (uid != Process.SYSTEM_UID && uid != 0 1237 && ActivityManager.checkComponentPermission( 1238 Manifest.permission.MANAGE_USERS, 1239 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1240 && ActivityManager.checkComponentPermission( 1241 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1242 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1243 throw new SecurityException( 1244 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1245 + message); 1246 } 1247 } 1248 1249 /** 1250 * Enforces that only the system UID or root's UID or apps that have the 1251 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1252 * permission can make certain calls to the UserManager. 1253 * 1254 * @param message used as message if SecurityException is thrown 1255 * @throws SecurityException if the caller is not system or root 1256 * @see #hasManageUsersPermission() 1257 */ 1258 private static final void checkManageUsersPermission(String message) { 1259 if (!hasManageUsersPermission()) { 1260 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1261 } 1262 } 1263 1264 /** 1265 * @return whether the calling UID is system UID or root's UID or the calling app has the 1266 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS}. 1267 */ 1268 private static final boolean hasManageUsersPermission() { 1269 final int callingUid = Binder.getCallingUid(); 1270 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1271 || callingUid == Process.ROOT_UID 1272 || ActivityManager.checkComponentPermission( 1273 android.Manifest.permission.MANAGE_USERS, 1274 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1275 } 1276 1277 /** 1278 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1279 * UserManager. 1280 * 1281 * @param message used as message if SecurityException is thrown 1282 * @throws SecurityException if the caller is not system or root 1283 */ 1284 private static void checkSystemOrRoot(String message) { 1285 final int uid = Binder.getCallingUid(); 1286 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1287 throw new SecurityException("Only system may: " + message); 1288 } 1289 } 1290 1291 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1292 try { 1293 File dir = new File(mUsersDir, Integer.toString(info.id)); 1294 File file = new File(dir, USER_PHOTO_FILENAME); 1295 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1296 if (!dir.exists()) { 1297 dir.mkdir(); 1298 FileUtils.setPermissions( 1299 dir.getPath(), 1300 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1301 -1, -1); 1302 } 1303 FileOutputStream os; 1304 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1305 && tmp.renameTo(file) && SELinux.restorecon(file)) { 1306 info.iconPath = file.getAbsolutePath(); 1307 } 1308 try { 1309 os.close(); 1310 } catch (IOException ioe) { 1311 // What the ... ! 1312 } 1313 tmp.delete(); 1314 } catch (FileNotFoundException e) { 1315 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1316 } 1317 } 1318 1319 /** 1320 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1321 * cache it elsewhere. 1322 * @return the array of user ids. 1323 */ 1324 public int[] getUserIds() { 1325 synchronized (mUsersLock) { 1326 return mUserIds; 1327 } 1328 } 1329 1330 private void readUserListLP() { 1331 if (!mUserListFile.exists()) { 1332 fallbackToSingleUserLP(); 1333 return; 1334 } 1335 FileInputStream fis = null; 1336 AtomicFile userListFile = new AtomicFile(mUserListFile); 1337 try { 1338 fis = userListFile.openRead(); 1339 XmlPullParser parser = Xml.newPullParser(); 1340 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1341 int type; 1342 while ((type = parser.next()) != XmlPullParser.START_TAG 1343 && type != XmlPullParser.END_DOCUMENT) { 1344 // Skip 1345 } 1346 1347 if (type != XmlPullParser.START_TAG) { 1348 Slog.e(LOG_TAG, "Unable to read user list"); 1349 fallbackToSingleUserLP(); 1350 return; 1351 } 1352 1353 mNextSerialNumber = -1; 1354 if (parser.getName().equals(TAG_USERS)) { 1355 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1356 if (lastSerialNumber != null) { 1357 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1358 } 1359 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1360 if (versionNumber != null) { 1361 mUserVersion = Integer.parseInt(versionNumber); 1362 } 1363 } 1364 1365 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1366 1367 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1368 if (type == XmlPullParser.START_TAG) { 1369 final String name = parser.getName(); 1370 if (name.equals(TAG_USER)) { 1371 String id = parser.getAttributeValue(null, ATTR_ID); 1372 1373 UserData userData = readUserLP(Integer.parseInt(id)); 1374 1375 if (userData != null) { 1376 synchronized (mUsersLock) { 1377 mUsers.put(userData.info.id, userData); 1378 if (mNextSerialNumber < 0 1379 || mNextSerialNumber <= userData.info.id) { 1380 mNextSerialNumber = userData.info.id + 1; 1381 } 1382 } 1383 } 1384 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1385 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1386 && type != XmlPullParser.END_TAG) { 1387 if (type == XmlPullParser.START_TAG) { 1388 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1389 synchronized (mGuestRestrictions) { 1390 UserRestrictionsUtils 1391 .readRestrictions(parser, mGuestRestrictions); 1392 } 1393 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1394 ) { 1395 UserRestrictionsUtils.readRestrictions(parser, 1396 newDevicePolicyGlobalUserRestrictions); 1397 } 1398 break; 1399 } 1400 } 1401 } 1402 } 1403 } 1404 synchronized (mRestrictionsLock) { 1405 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1406 } 1407 updateUserIds(); 1408 upgradeIfNecessaryLP(); 1409 } catch (IOException | XmlPullParserException e) { 1410 fallbackToSingleUserLP(); 1411 } finally { 1412 IoUtils.closeQuietly(fis); 1413 } 1414 } 1415 1416 /** 1417 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1418 */ 1419 private void upgradeIfNecessaryLP() { 1420 final int originalVersion = mUserVersion; 1421 int userVersion = mUserVersion; 1422 if (userVersion < 1) { 1423 // Assign a proper name for the owner, if not initialized correctly before 1424 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1425 if ("Primary".equals(userData.info.name)) { 1426 userData.info.name = 1427 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1428 scheduleWriteUser(userData); 1429 } 1430 userVersion = 1; 1431 } 1432 1433 if (userVersion < 2) { 1434 // Owner should be marked as initialized 1435 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1436 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1437 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1438 scheduleWriteUser(userData); 1439 } 1440 userVersion = 2; 1441 } 1442 1443 1444 if (userVersion < 4) { 1445 userVersion = 4; 1446 } 1447 1448 if (userVersion < 5) { 1449 initDefaultGuestRestrictions(); 1450 userVersion = 5; 1451 } 1452 1453 if (userVersion < 6) { 1454 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1455 synchronized (mUsersLock) { 1456 for (int i = 0; i < mUsers.size(); i++) { 1457 UserData userData = mUsers.valueAt(i); 1458 // In non-split mode, only user 0 can have restricted profiles 1459 if (!splitSystemUser && userData.info.isRestricted() 1460 && (userData.info.restrictedProfileParentId 1461 == UserInfo.NO_PROFILE_GROUP_ID)) { 1462 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1463 scheduleWriteUser(userData); 1464 } 1465 } 1466 } 1467 userVersion = 6; 1468 } 1469 1470 if (userVersion < USER_VERSION) { 1471 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1472 + USER_VERSION); 1473 } else { 1474 mUserVersion = userVersion; 1475 1476 if (originalVersion < mUserVersion) { 1477 writeUserListLP(); 1478 } 1479 } 1480 } 1481 1482 private void fallbackToSingleUserLP() { 1483 int flags = UserInfo.FLAG_INITIALIZED; 1484 // In split system user mode, the admin and primary flags are assigned to the first human 1485 // user. 1486 if (!UserManager.isSplitSystemUser()) { 1487 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1488 } 1489 // Create the system user 1490 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, null, null, flags); 1491 UserData userData = new UserData(); 1492 userData.info = system; 1493 synchronized (mUsersLock) { 1494 mUsers.put(system.id, userData); 1495 } 1496 mNextSerialNumber = MIN_USER_ID; 1497 mUserVersion = USER_VERSION; 1498 1499 Bundle restrictions = new Bundle(); 1500 synchronized (mRestrictionsLock) { 1501 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1502 } 1503 1504 updateUserIds(); 1505 initDefaultGuestRestrictions(); 1506 1507 writeUserLP(userData); 1508 writeUserListLP(); 1509 } 1510 1511 private String getOwnerName() { 1512 return mContext.getResources().getString(com.android.internal.R.string.owner_name); 1513 } 1514 1515 private void scheduleWriteUser(UserData UserData) { 1516 if (DBG) { 1517 debug("scheduleWriteUser"); 1518 } 1519 // No need to wrap it within a lock -- worst case, we'll just post the same message 1520 // twice. 1521 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1522 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1523 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1524 } 1525 } 1526 1527 /* 1528 * Writes the user file in this format: 1529 * 1530 * <user flags="20039023" id="0"> 1531 * <name>Primary</name> 1532 * </user> 1533 */ 1534 private void writeUserLP(UserData userData) { 1535 if (DBG) { 1536 debug("writeUserLP " + userData); 1537 } 1538 FileOutputStream fos = null; 1539 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1540 try { 1541 fos = userFile.startWrite(); 1542 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1543 1544 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1545 final XmlSerializer serializer = new FastXmlSerializer(); 1546 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1547 serializer.startDocument(null, true); 1548 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1549 1550 final UserInfo userInfo = userData.info; 1551 serializer.startTag(null, TAG_USER); 1552 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1553 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1554 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1555 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1556 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1557 Long.toString(userInfo.lastLoggedInTime)); 1558 if (userInfo.lastLoggedInFingerprint != null) { 1559 serializer.attribute(null, ATTR_LAST_LOGGED_IN_FINGERPRINT, 1560 userInfo.lastLoggedInFingerprint); 1561 } 1562 if (userInfo.iconPath != null) { 1563 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1564 } 1565 if (userInfo.partial) { 1566 serializer.attribute(null, ATTR_PARTIAL, "true"); 1567 } 1568 if (userInfo.guestToRemove) { 1569 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1570 } 1571 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1572 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1573 Integer.toString(userInfo.profileGroupId)); 1574 } 1575 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1576 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1577 Integer.toString(userInfo.restrictedProfileParentId)); 1578 } 1579 // Write seed data 1580 if (userData.persistSeedData) { 1581 if (userData.seedAccountName != null) { 1582 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 1583 } 1584 if (userData.seedAccountType != null) { 1585 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 1586 } 1587 } 1588 if (userInfo.name != null) { 1589 serializer.startTag(null, TAG_NAME); 1590 serializer.text(userInfo.name); 1591 serializer.endTag(null, TAG_NAME); 1592 } 1593 synchronized (mRestrictionsLock) { 1594 UserRestrictionsUtils.writeRestrictions(serializer, 1595 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1596 UserRestrictionsUtils.writeRestrictions(serializer, 1597 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1598 TAG_DEVICE_POLICY_RESTRICTIONS); 1599 } 1600 1601 if (userData.account != null) { 1602 serializer.startTag(null, TAG_ACCOUNT); 1603 serializer.text(userData.account); 1604 serializer.endTag(null, TAG_ACCOUNT); 1605 } 1606 1607 if (userData.persistSeedData && userData.seedAccountOptions != null) { 1608 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1609 userData.seedAccountOptions.saveToXml(serializer); 1610 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1611 } 1612 serializer.endTag(null, TAG_USER); 1613 1614 serializer.endDocument(); 1615 userFile.finishWrite(fos); 1616 } catch (Exception ioe) { 1617 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id, ioe); 1618 userFile.failWrite(fos); 1619 } 1620 } 1621 1622 /* 1623 * Writes the user list file in this format: 1624 * 1625 * <users nextSerialNumber="3"> 1626 * <user id="0"></user> 1627 * <user id="2"></user> 1628 * </users> 1629 */ 1630 private void writeUserListLP() { 1631 if (DBG) { 1632 debug("writeUserList"); 1633 } 1634 FileOutputStream fos = null; 1635 AtomicFile userListFile = new AtomicFile(mUserListFile); 1636 try { 1637 fos = userListFile.startWrite(); 1638 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1639 1640 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1641 final XmlSerializer serializer = new FastXmlSerializer(); 1642 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1643 serializer.startDocument(null, true); 1644 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1645 1646 serializer.startTag(null, TAG_USERS); 1647 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1648 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1649 1650 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1651 synchronized (mGuestRestrictions) { 1652 UserRestrictionsUtils 1653 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1654 } 1655 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1656 synchronized (mRestrictionsLock) { 1657 UserRestrictionsUtils.writeRestrictions(serializer, 1658 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1659 } 1660 int[] userIdsToWrite; 1661 synchronized (mUsersLock) { 1662 userIdsToWrite = new int[mUsers.size()]; 1663 for (int i = 0; i < userIdsToWrite.length; i++) { 1664 UserInfo user = mUsers.valueAt(i).info; 1665 userIdsToWrite[i] = user.id; 1666 } 1667 } 1668 for (int id : userIdsToWrite) { 1669 serializer.startTag(null, TAG_USER); 1670 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1671 serializer.endTag(null, TAG_USER); 1672 } 1673 1674 serializer.endTag(null, TAG_USERS); 1675 1676 serializer.endDocument(); 1677 userListFile.finishWrite(fos); 1678 } catch (Exception e) { 1679 userListFile.failWrite(fos); 1680 Slog.e(LOG_TAG, "Error writing user list"); 1681 } 1682 } 1683 1684 private UserData readUserLP(int id) { 1685 int flags = 0; 1686 int serialNumber = id; 1687 String name = null; 1688 String account = null; 1689 String iconPath = null; 1690 long creationTime = 0L; 1691 long lastLoggedInTime = 0L; 1692 String lastLoggedInFingerprint = null; 1693 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 1694 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 1695 boolean partial = false; 1696 boolean guestToRemove = false; 1697 boolean persistSeedData = false; 1698 String seedAccountName = null; 1699 String seedAccountType = null; 1700 PersistableBundle seedAccountOptions = null; 1701 Bundle baseRestrictions = new Bundle(); 1702 Bundle localRestrictions = new Bundle(); 1703 1704 FileInputStream fis = null; 1705 try { 1706 AtomicFile userFile = 1707 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 1708 fis = userFile.openRead(); 1709 XmlPullParser parser = Xml.newPullParser(); 1710 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1711 int type; 1712 while ((type = parser.next()) != XmlPullParser.START_TAG 1713 && type != XmlPullParser.END_DOCUMENT) { 1714 // Skip 1715 } 1716 1717 if (type != XmlPullParser.START_TAG) { 1718 Slog.e(LOG_TAG, "Unable to read user " + id); 1719 return null; 1720 } 1721 1722 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 1723 int storedId = readIntAttribute(parser, ATTR_ID, -1); 1724 if (storedId != id) { 1725 Slog.e(LOG_TAG, "User id does not match the file name"); 1726 return null; 1727 } 1728 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 1729 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 1730 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 1731 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 1732 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 1733 lastLoggedInFingerprint = parser.getAttributeValue(null, 1734 ATTR_LAST_LOGGED_IN_FINGERPRINT); 1735 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 1736 UserInfo.NO_PROFILE_GROUP_ID); 1737 restrictedProfileParentId = readIntAttribute(parser, 1738 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 1739 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 1740 if ("true".equals(valueString)) { 1741 partial = true; 1742 } 1743 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 1744 if ("true".equals(valueString)) { 1745 guestToRemove = true; 1746 } 1747 1748 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 1749 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 1750 if (seedAccountName != null || seedAccountType != null) { 1751 persistSeedData = true; 1752 } 1753 1754 int outerDepth = parser.getDepth(); 1755 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1756 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1757 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1758 continue; 1759 } 1760 String tag = parser.getName(); 1761 if (TAG_NAME.equals(tag)) { 1762 type = parser.next(); 1763 if (type == XmlPullParser.TEXT) { 1764 name = parser.getText(); 1765 } 1766 } else if (TAG_RESTRICTIONS.equals(tag)) { 1767 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 1768 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 1769 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 1770 } else if (TAG_ACCOUNT.equals(tag)) { 1771 type = parser.next(); 1772 if (type == XmlPullParser.TEXT) { 1773 account = parser.getText(); 1774 } 1775 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 1776 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 1777 persistSeedData = true; 1778 } 1779 } 1780 } 1781 1782 // Create the UserInfo object that gets passed around 1783 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 1784 userInfo.serialNumber = serialNumber; 1785 userInfo.creationTime = creationTime; 1786 userInfo.lastLoggedInTime = lastLoggedInTime; 1787 userInfo.lastLoggedInFingerprint = lastLoggedInFingerprint; 1788 userInfo.partial = partial; 1789 userInfo.guestToRemove = guestToRemove; 1790 userInfo.profileGroupId = profileGroupId; 1791 userInfo.restrictedProfileParentId = restrictedProfileParentId; 1792 1793 // Create the UserData object that's internal to this class 1794 UserData userData = new UserData(); 1795 userData.info = userInfo; 1796 userData.account = account; 1797 userData.seedAccountName = seedAccountName; 1798 userData.seedAccountType = seedAccountType; 1799 userData.persistSeedData = persistSeedData; 1800 userData.seedAccountOptions = seedAccountOptions; 1801 1802 synchronized (mRestrictionsLock) { 1803 mBaseUserRestrictions.put(id, baseRestrictions); 1804 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 1805 } 1806 return userData; 1807 } catch (IOException ioe) { 1808 } catch (XmlPullParserException pe) { 1809 } finally { 1810 if (fis != null) { 1811 try { 1812 fis.close(); 1813 } catch (IOException e) { 1814 } 1815 } 1816 } 1817 return null; 1818 } 1819 1820 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1821 String valueString = parser.getAttributeValue(null, attr); 1822 if (valueString == null) return defaultValue; 1823 try { 1824 return Integer.parseInt(valueString); 1825 } catch (NumberFormatException nfe) { 1826 return defaultValue; 1827 } 1828 } 1829 1830 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1831 String valueString = parser.getAttributeValue(null, attr); 1832 if (valueString == null) return defaultValue; 1833 try { 1834 return Long.parseLong(valueString); 1835 } catch (NumberFormatException nfe) { 1836 return defaultValue; 1837 } 1838 } 1839 1840 /** 1841 * Removes the app restrictions file for a specific package and user id, if it exists. 1842 */ 1843 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1844 synchronized (mPackagesLock) { 1845 File dir = Environment.getUserSystemDirectory(userId); 1846 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1847 if (resFile.exists()) { 1848 resFile.delete(); 1849 } 1850 } 1851 } 1852 1853 @Override 1854 public UserInfo createProfileForUser(String name, int flags, int userId) { 1855 checkManageUsersPermission("Only the system can create users"); 1856 return createUserInternal(name, flags, userId); 1857 } 1858 1859 @Override 1860 public UserInfo createUser(String name, int flags) { 1861 checkManageUsersPermission("Only the system can create users"); 1862 return createUserInternal(name, flags, UserHandle.USER_NULL); 1863 } 1864 1865 private UserInfo createUserInternal(String name, int flags, int parentId) { 1866 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 1867 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1868 return null; 1869 } 1870 return createUserInternalUnchecked(name, flags, parentId); 1871 } 1872 1873 private UserInfo createUserInternalUnchecked(String name, int flags, int parentId) { 1874 if (ActivityManager.isLowRamDeviceStatic()) { 1875 return null; 1876 } 1877 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1878 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 1879 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 1880 final long ident = Binder.clearCallingIdentity(); 1881 UserInfo userInfo; 1882 UserData userData; 1883 final int userId; 1884 try { 1885 synchronized (mPackagesLock) { 1886 UserData parent = null; 1887 if (parentId != UserHandle.USER_NULL) { 1888 synchronized (mUsersLock) { 1889 parent = getUserDataLU(parentId); 1890 } 1891 if (parent == null) return null; 1892 } 1893 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 1894 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 1895 return null; 1896 } 1897 if (!isGuest && !isManagedProfile && isUserLimitReached()) { 1898 // If we're not adding a guest user or a managed profile and the limit has 1899 // been reached, cannot add a user. 1900 return null; 1901 } 1902 // If we're adding a guest and there already exists one, bail. 1903 if (isGuest && findCurrentGuestUser() != null) { 1904 return null; 1905 } 1906 // In legacy mode, restricted profile's parent can only be the owner user 1907 if (isRestricted && !UserManager.isSplitSystemUser() 1908 && (parentId != UserHandle.USER_SYSTEM)) { 1909 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 1910 return null; 1911 } 1912 if (isRestricted && UserManager.isSplitSystemUser()) { 1913 if (parent == null) { 1914 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 1915 + "specified"); 1916 return null; 1917 } 1918 if (!parent.info.canHaveProfile()) { 1919 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 1920 + "created for the specified parent user id " + parentId); 1921 return null; 1922 } 1923 } 1924 if (!UserManager.isSplitSystemUser() && (flags & UserInfo.FLAG_EPHEMERAL) != 0) { 1925 Log.e(LOG_TAG, 1926 "Ephemeral users are supported on split-system-user systems only."); 1927 return null; 1928 } 1929 // In split system user mode, we assign the first human user the primary flag. 1930 // And if there is no device owner, we also assign the admin flag to primary user. 1931 if (UserManager.isSplitSystemUser() 1932 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 1933 flags |= UserInfo.FLAG_PRIMARY; 1934 synchronized (mUsersLock) { 1935 if (!mIsDeviceManaged) { 1936 flags |= UserInfo.FLAG_ADMIN; 1937 } 1938 } 1939 } 1940 1941 userId = getNextAvailableId(); 1942 Environment.getUserSystemDirectory(userId).mkdirs(); 1943 boolean ephemeralGuests = Resources.getSystem() 1944 .getBoolean(com.android.internal.R.bool.config_guestUserEphemeral); 1945 1946 synchronized (mUsersLock) { 1947 // Add ephemeral flag to guests/users if required. Also inherit it from parent. 1948 if ((isGuest && ephemeralGuests) || mForceEphemeralUsers 1949 || (parent != null && parent.info.isEphemeral())) { 1950 flags |= UserInfo.FLAG_EPHEMERAL; 1951 } 1952 1953 userInfo = new UserInfo(userId, name, null, flags); 1954 userInfo.serialNumber = mNextSerialNumber++; 1955 long now = System.currentTimeMillis(); 1956 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1957 userInfo.partial = true; 1958 userInfo.lastLoggedInFingerprint = Build.FINGERPRINT; 1959 userData = new UserData(); 1960 userData.info = userInfo; 1961 mUsers.put(userId, userData); 1962 } 1963 writeUserLP(userData); 1964 writeUserListLP(); 1965 if (parent != null) { 1966 if (isManagedProfile) { 1967 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1968 parent.info.profileGroupId = parent.info.id; 1969 writeUserLP(parent); 1970 } 1971 userInfo.profileGroupId = parent.info.profileGroupId; 1972 } else if (isRestricted) { 1973 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 1974 parent.info.restrictedProfileParentId = parent.info.id; 1975 writeUserLP(parent); 1976 } 1977 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 1978 } 1979 } 1980 } 1981 final StorageManager storage = mContext.getSystemService(StorageManager.class); 1982 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 1983 prepareUserStorage(userId, userInfo.serialNumber, 1984 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 1985 mPm.createNewUser(userId); 1986 userInfo.partial = false; 1987 synchronized (mPackagesLock) { 1988 writeUserLP(userData); 1989 } 1990 updateUserIds(); 1991 Bundle restrictions = new Bundle(); 1992 if (isGuest) { 1993 synchronized (mGuestRestrictions) { 1994 restrictions.putAll(mGuestRestrictions); 1995 } 1996 } 1997 synchronized (mRestrictionsLock) { 1998 mBaseUserRestrictions.append(userId, restrictions); 1999 } 2000 mPm.newUserCreated(userId); 2001 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 2002 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 2003 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 2004 android.Manifest.permission.MANAGE_USERS); 2005 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 2006 } finally { 2007 Binder.restoreCallingIdentity(ident); 2008 } 2009 return userInfo; 2010 } 2011 2012 /** 2013 * @hide 2014 */ 2015 @Override 2016 public UserInfo createRestrictedProfile(String name, int parentUserId) { 2017 checkManageUsersPermission("setupRestrictedProfile"); 2018 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 2019 if (user == null) { 2020 return null; 2021 } 2022 long identity = Binder.clearCallingIdentity(); 2023 try { 2024 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 2025 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 2026 // the putIntForUser() will fail. 2027 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 2028 android.provider.Settings.Secure.LOCATION_MODE, 2029 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 2030 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 2031 } finally { 2032 Binder.restoreCallingIdentity(identity); 2033 } 2034 return user; 2035 } 2036 2037 /** 2038 * Find the current guest user. If the Guest user is partial, 2039 * then do not include it in the results as it is about to die. 2040 */ 2041 private UserInfo findCurrentGuestUser() { 2042 synchronized (mUsersLock) { 2043 final int size = mUsers.size(); 2044 for (int i = 0; i < size; i++) { 2045 final UserInfo user = mUsers.valueAt(i).info; 2046 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 2047 return user; 2048 } 2049 } 2050 } 2051 return null; 2052 } 2053 2054 /** 2055 * Mark this guest user for deletion to allow us to create another guest 2056 * and switch to that user before actually removing this guest. 2057 * @param userHandle the userid of the current guest 2058 * @return whether the user could be marked for deletion 2059 */ 2060 @Override 2061 public boolean markGuestForDeletion(int userHandle) { 2062 checkManageUsersPermission("Only the system can remove users"); 2063 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2064 UserManager.DISALLOW_REMOVE_USER, false)) { 2065 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2066 return false; 2067 } 2068 2069 long ident = Binder.clearCallingIdentity(); 2070 try { 2071 final UserData userData; 2072 synchronized (mPackagesLock) { 2073 synchronized (mUsersLock) { 2074 userData = mUsers.get(userHandle); 2075 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2076 return false; 2077 } 2078 } 2079 if (!userData.info.isGuest()) { 2080 return false; 2081 } 2082 // We set this to a guest user that is to be removed. This is a temporary state 2083 // where we are allowed to add new Guest users, even if this one is still not 2084 // removed. This user will still show up in getUserInfo() calls. 2085 // If we don't get around to removing this Guest user, it will be purged on next 2086 // startup. 2087 userData.info.guestToRemove = true; 2088 // Mark it as disabled, so that it isn't returned any more when 2089 // profiles are queried. 2090 userData.info.flags |= UserInfo.FLAG_DISABLED; 2091 writeUserLP(userData); 2092 } 2093 } finally { 2094 Binder.restoreCallingIdentity(ident); 2095 } 2096 return true; 2097 } 2098 2099 /** 2100 * Removes a user and all data directories created for that user. This method should be called 2101 * after the user's processes have been terminated. 2102 * @param userHandle the user's id 2103 */ 2104 @Override 2105 public boolean removeUser(int userHandle) { 2106 checkManageUsersPermission("Only the system can remove users"); 2107 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2108 UserManager.DISALLOW_REMOVE_USER, false)) { 2109 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2110 return false; 2111 } 2112 2113 long ident = Binder.clearCallingIdentity(); 2114 try { 2115 final UserData userData; 2116 int currentUser = ActivityManager.getCurrentUser(); 2117 if (currentUser == userHandle) { 2118 Log.w(LOG_TAG, "Current user cannot be removed"); 2119 return false; 2120 } 2121 synchronized (mPackagesLock) { 2122 synchronized (mUsersLock) { 2123 userData = mUsers.get(userHandle); 2124 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2125 return false; 2126 } 2127 2128 // We remember deleted user IDs to prevent them from being 2129 // reused during the current boot; they can still be reused 2130 // after a reboot. 2131 mRemovingUserIds.put(userHandle, true); 2132 } 2133 2134 try { 2135 mAppOpsService.removeUser(userHandle); 2136 } catch (RemoteException e) { 2137 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2138 } 2139 // Set this to a partially created user, so that the user will be purged 2140 // on next startup, in case the runtime stops now before stopping and 2141 // removing the user completely. 2142 userData.info.partial = true; 2143 // Mark it as disabled, so that it isn't returned any more when 2144 // profiles are queried. 2145 userData.info.flags |= UserInfo.FLAG_DISABLED; 2146 writeUserLP(userData); 2147 } 2148 2149 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2150 && userData.info.isManagedProfile()) { 2151 // Send broadcast to notify system that the user removed was a 2152 // managed user. 2153 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2154 } 2155 2156 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2157 int res; 2158 try { 2159 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 2160 new IStopUserCallback.Stub() { 2161 @Override 2162 public void userStopped(int userId) { 2163 finishRemoveUser(userId); 2164 } 2165 @Override 2166 public void userStopAborted(int userId) { 2167 } 2168 }); 2169 } catch (RemoteException e) { 2170 return false; 2171 } 2172 return res == ActivityManager.USER_OP_SUCCESS; 2173 } finally { 2174 Binder.restoreCallingIdentity(ident); 2175 } 2176 } 2177 2178 void finishRemoveUser(final int userHandle) { 2179 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2180 // Let other services shutdown any activity and clean up their state before completely 2181 // wiping the user's system directory and removing from the user list 2182 long ident = Binder.clearCallingIdentity(); 2183 try { 2184 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2185 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2186 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2187 android.Manifest.permission.MANAGE_USERS, 2188 2189 new BroadcastReceiver() { 2190 @Override 2191 public void onReceive(Context context, Intent intent) { 2192 if (DBG) { 2193 Slog.i(LOG_TAG, 2194 "USER_REMOVED broadcast sent, cleaning up user data " 2195 + userHandle); 2196 } 2197 new Thread() { 2198 @Override 2199 public void run() { 2200 // Clean up any ActivityManager state 2201 LocalServices.getService(ActivityManagerInternal.class) 2202 .onUserRemoved(userHandle); 2203 removeUserState(userHandle); 2204 } 2205 }.start(); 2206 } 2207 }, 2208 2209 null, Activity.RESULT_OK, null, null); 2210 } finally { 2211 Binder.restoreCallingIdentity(ident); 2212 } 2213 } 2214 2215 private void removeUserState(final int userHandle) { 2216 try { 2217 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2218 } catch (IllegalStateException e) { 2219 // This may be simply because the user was partially created. 2220 Slog.i(LOG_TAG, 2221 "Destroying key for user " + userHandle + " failed, continuing anyway", e); 2222 } 2223 // Cleanup package manager settings 2224 mPm.cleanUpUser(this, userHandle); 2225 2226 // Remove this user from the list 2227 synchronized (mUsersLock) { 2228 mUsers.remove(userHandle); 2229 mIsUserManaged.delete(userHandle); 2230 } 2231 synchronized (mRestrictionsLock) { 2232 mBaseUserRestrictions.remove(userHandle); 2233 mAppliedUserRestrictions.remove(userHandle); 2234 mCachedEffectiveUserRestrictions.remove(userHandle); 2235 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2236 } 2237 // Update the user list 2238 synchronized (mPackagesLock) { 2239 writeUserListLP(); 2240 } 2241 // Remove user file 2242 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2243 userFile.delete(); 2244 updateUserIds(); 2245 File userDir = Environment.getUserSystemDirectory(userHandle); 2246 File renamedUserDir = Environment.getUserSystemDirectory(UserHandle.USER_NULL - userHandle); 2247 if (userDir.renameTo(renamedUserDir)) { 2248 removeDirectoryRecursive(renamedUserDir); 2249 } else { 2250 removeDirectoryRecursive(userDir); 2251 } 2252 } 2253 2254 private void removeDirectoryRecursive(File parent) { 2255 if (parent.isDirectory()) { 2256 String[] files = parent.list(); 2257 for (String filename : files) { 2258 File child = new File(parent, filename); 2259 removeDirectoryRecursive(child); 2260 } 2261 } 2262 parent.delete(); 2263 } 2264 2265 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2266 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2267 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2268 Intent.FLAG_RECEIVER_FOREGROUND); 2269 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2270 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2271 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2272 } 2273 2274 @Override 2275 public Bundle getApplicationRestrictions(String packageName) { 2276 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2277 } 2278 2279 @Override 2280 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2281 if (UserHandle.getCallingUserId() != userId 2282 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2283 checkSystemOrRoot("get application restrictions for other users/apps"); 2284 } 2285 synchronized (mPackagesLock) { 2286 // Read the restrictions from XML 2287 return readApplicationRestrictionsLP(packageName, userId); 2288 } 2289 } 2290 2291 @Override 2292 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2293 int userId) { 2294 checkSystemOrRoot("set application restrictions"); 2295 synchronized (mPackagesLock) { 2296 if (restrictions == null || restrictions.isEmpty()) { 2297 cleanAppRestrictionsForPackage(packageName, userId); 2298 } else { 2299 restrictions.setDefusable(true); 2300 // Write the restrictions to XML 2301 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2302 } 2303 } 2304 2305 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2306 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2307 changeIntent.setPackage(packageName); 2308 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2309 mContext.sendBroadcastAsUser(changeIntent, UserHandle.of(userId)); 2310 } 2311 2312 private int getUidForPackage(String packageName) { 2313 long ident = Binder.clearCallingIdentity(); 2314 try { 2315 return mContext.getPackageManager().getApplicationInfo(packageName, 2316 PackageManager.MATCH_UNINSTALLED_PACKAGES).uid; 2317 } catch (NameNotFoundException nnfe) { 2318 return -1; 2319 } finally { 2320 Binder.restoreCallingIdentity(ident); 2321 } 2322 } 2323 2324 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2325 AtomicFile restrictionsFile = 2326 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2327 packageToRestrictionsFileName(packageName))); 2328 return readApplicationRestrictionsLP(restrictionsFile); 2329 } 2330 2331 @VisibleForTesting 2332 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2333 final Bundle restrictions = new Bundle(); 2334 final ArrayList<String> values = new ArrayList<>(); 2335 if (!restrictionsFile.getBaseFile().exists()) { 2336 return restrictions; 2337 } 2338 2339 FileInputStream fis = null; 2340 try { 2341 fis = restrictionsFile.openRead(); 2342 XmlPullParser parser = Xml.newPullParser(); 2343 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2344 XmlUtils.nextElement(parser); 2345 if (parser.getEventType() != XmlPullParser.START_TAG) { 2346 Slog.e(LOG_TAG, "Unable to read restrictions file " 2347 + restrictionsFile.getBaseFile()); 2348 return restrictions; 2349 } 2350 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2351 readEntry(restrictions, values, parser); 2352 } 2353 } catch (IOException|XmlPullParserException e) { 2354 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2355 } finally { 2356 IoUtils.closeQuietly(fis); 2357 } 2358 return restrictions; 2359 } 2360 2361 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2362 XmlPullParser parser) throws XmlPullParserException, IOException { 2363 int type = parser.getEventType(); 2364 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2365 String key = parser.getAttributeValue(null, ATTR_KEY); 2366 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2367 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2368 if (multiple != null) { 2369 values.clear(); 2370 int count = Integer.parseInt(multiple); 2371 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2372 if (type == XmlPullParser.START_TAG 2373 && parser.getName().equals(TAG_VALUE)) { 2374 values.add(parser.nextText().trim()); 2375 count--; 2376 } 2377 } 2378 String [] valueStrings = new String[values.size()]; 2379 values.toArray(valueStrings); 2380 restrictions.putStringArray(key, valueStrings); 2381 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2382 restrictions.putBundle(key, readBundleEntry(parser, values)); 2383 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2384 final int outerDepth = parser.getDepth(); 2385 ArrayList<Bundle> bundleList = new ArrayList<>(); 2386 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2387 Bundle childBundle = readBundleEntry(parser, values); 2388 bundleList.add(childBundle); 2389 } 2390 restrictions.putParcelableArray(key, 2391 bundleList.toArray(new Bundle[bundleList.size()])); 2392 } else { 2393 String value = parser.nextText().trim(); 2394 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2395 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2396 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2397 restrictions.putInt(key, Integer.parseInt(value)); 2398 } else { 2399 restrictions.putString(key, value); 2400 } 2401 } 2402 } 2403 } 2404 2405 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2406 throws IOException, XmlPullParserException { 2407 Bundle childBundle = new Bundle(); 2408 final int outerDepth = parser.getDepth(); 2409 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2410 readEntry(childBundle, values, parser); 2411 } 2412 return childBundle; 2413 } 2414 2415 private void writeApplicationRestrictionsLP(String packageName, 2416 Bundle restrictions, int userId) { 2417 AtomicFile restrictionsFile = new AtomicFile( 2418 new File(Environment.getUserSystemDirectory(userId), 2419 packageToRestrictionsFileName(packageName))); 2420 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2421 } 2422 2423 @VisibleForTesting 2424 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2425 FileOutputStream fos = null; 2426 try { 2427 fos = restrictionsFile.startWrite(); 2428 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2429 2430 final XmlSerializer serializer = new FastXmlSerializer(); 2431 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2432 serializer.startDocument(null, true); 2433 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2434 2435 serializer.startTag(null, TAG_RESTRICTIONS); 2436 writeBundle(restrictions, serializer); 2437 serializer.endTag(null, TAG_RESTRICTIONS); 2438 2439 serializer.endDocument(); 2440 restrictionsFile.finishWrite(fos); 2441 } catch (Exception e) { 2442 restrictionsFile.failWrite(fos); 2443 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2444 } 2445 } 2446 2447 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2448 throws IOException { 2449 for (String key : restrictions.keySet()) { 2450 Object value = restrictions.get(key); 2451 serializer.startTag(null, TAG_ENTRY); 2452 serializer.attribute(null, ATTR_KEY, key); 2453 2454 if (value instanceof Boolean) { 2455 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2456 serializer.text(value.toString()); 2457 } else if (value instanceof Integer) { 2458 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2459 serializer.text(value.toString()); 2460 } else if (value == null || value instanceof String) { 2461 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2462 serializer.text(value != null ? (String) value : ""); 2463 } else if (value instanceof Bundle) { 2464 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2465 writeBundle((Bundle) value, serializer); 2466 } else if (value instanceof Parcelable[]) { 2467 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2468 Parcelable[] array = (Parcelable[]) value; 2469 for (Parcelable parcelable : array) { 2470 if (!(parcelable instanceof Bundle)) { 2471 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2472 } 2473 serializer.startTag(null, TAG_ENTRY); 2474 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2475 writeBundle((Bundle) parcelable, serializer); 2476 serializer.endTag(null, TAG_ENTRY); 2477 } 2478 } else { 2479 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2480 String[] values = (String[]) value; 2481 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2482 for (String choice : values) { 2483 serializer.startTag(null, TAG_VALUE); 2484 serializer.text(choice != null ? choice : ""); 2485 serializer.endTag(null, TAG_VALUE); 2486 } 2487 } 2488 serializer.endTag(null, TAG_ENTRY); 2489 } 2490 } 2491 2492 @Override 2493 public int getUserSerialNumber(int userHandle) { 2494 synchronized (mUsersLock) { 2495 if (!exists(userHandle)) return -1; 2496 return getUserInfoLU(userHandle).serialNumber; 2497 } 2498 } 2499 2500 @Override 2501 public int getUserHandle(int userSerialNumber) { 2502 synchronized (mUsersLock) { 2503 for (int userId : mUserIds) { 2504 UserInfo info = getUserInfoLU(userId); 2505 if (info != null && info.serialNumber == userSerialNumber) return userId; 2506 } 2507 // Not found 2508 return -1; 2509 } 2510 } 2511 2512 @Override 2513 public long getUserCreationTime(int userHandle) { 2514 int callingUserId = UserHandle.getCallingUserId(); 2515 UserInfo userInfo = null; 2516 synchronized (mUsersLock) { 2517 if (callingUserId == userHandle) { 2518 userInfo = getUserInfoLU(userHandle); 2519 } else { 2520 UserInfo parent = getProfileParentLU(userHandle); 2521 if (parent != null && parent.id == callingUserId) { 2522 userInfo = getUserInfoLU(userHandle); 2523 } 2524 } 2525 } 2526 if (userInfo == null) { 2527 throw new SecurityException("userHandle can only be the calling user or a managed " 2528 + "profile associated with this user"); 2529 } 2530 return userInfo.creationTime; 2531 } 2532 2533 /** 2534 * Caches the list of user ids in an array, adjusting the array size when necessary. 2535 */ 2536 private void updateUserIds() { 2537 int num = 0; 2538 synchronized (mUsersLock) { 2539 final int userSize = mUsers.size(); 2540 for (int i = 0; i < userSize; i++) { 2541 if (!mUsers.valueAt(i).info.partial) { 2542 num++; 2543 } 2544 } 2545 final int[] newUsers = new int[num]; 2546 int n = 0; 2547 for (int i = 0; i < userSize; i++) { 2548 if (!mUsers.valueAt(i).info.partial) { 2549 newUsers[n++] = mUsers.keyAt(i); 2550 } 2551 } 2552 mUserIds = newUsers; 2553 } 2554 } 2555 2556 /** 2557 * Prepare storage areas for given user on all mounted devices. 2558 */ 2559 private void prepareUserStorage(int userId, int userSerial, int flags) { 2560 final StorageManager storage = mContext.getSystemService(StorageManager.class); 2561 for (VolumeInfo vol : storage.getWritablePrivateVolumes()) { 2562 final String volumeUuid = vol.getFsUuid(); 2563 storage.prepareUserStorage(volumeUuid, userId, userSerial, flags); 2564 } 2565 } 2566 2567 /** 2568 * Called right before a user is started. This gives us a chance to prepare 2569 * app storage and apply any user restrictions. 2570 */ 2571 public void onBeforeStartUser(int userId) { 2572 final int userSerial = getUserSerialNumber(userId); 2573 prepareUserStorage(userId, userSerial, StorageManager.FLAG_STORAGE_DE); 2574 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_DE); 2575 2576 if (userId != UserHandle.USER_SYSTEM) { 2577 synchronized (mRestrictionsLock) { 2578 applyUserRestrictionsLR(userId); 2579 } 2580 } 2581 } 2582 2583 /** 2584 * Called right before a user is unlocked. This gives us a chance to prepare 2585 * app storage. 2586 */ 2587 public void onBeforeUnlockUser(@UserIdInt int userId) { 2588 final int userSerial = getUserSerialNumber(userId); 2589 prepareUserStorage(userId, userSerial, StorageManager.FLAG_STORAGE_CE); 2590 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_CE); 2591 } 2592 2593 /** 2594 * Make a note of the last started time of a user and do some cleanup. 2595 * @param userId the user that was just foregrounded 2596 */ 2597 public void onUserLoggedIn(@UserIdInt int userId) { 2598 UserData userData = getUserDataNoChecks(userId); 2599 if (userData == null || userData.info.partial) { 2600 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2601 return; 2602 } 2603 2604 final long now = System.currentTimeMillis(); 2605 if (now > EPOCH_PLUS_30_YEARS) { 2606 userData.info.lastLoggedInTime = now; 2607 } 2608 userData.info.lastLoggedInFingerprint = Build.FINGERPRINT; 2609 scheduleWriteUser(userData); 2610 } 2611 2612 /** 2613 * Returns the next available user id, filling in any holes in the ids. 2614 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2615 * for data and battery stats collection, or unexpected cross-talk. 2616 */ 2617 private int getNextAvailableId() { 2618 synchronized (mUsersLock) { 2619 int i = MIN_USER_ID; 2620 while (i < MAX_USER_ID) { 2621 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2622 return i; 2623 } 2624 i++; 2625 } 2626 } 2627 throw new IllegalStateException("No user id available!"); 2628 } 2629 2630 private String packageToRestrictionsFileName(String packageName) { 2631 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2632 } 2633 2634 /** 2635 * Enforce that serial number stored in user directory inode matches the 2636 * given expected value. Gracefully sets the serial number if currently 2637 * undefined. 2638 * 2639 * @throws IOException when problem extracting serial number, or serial 2640 * number is mismatched. 2641 */ 2642 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2643 final int foundSerial = getSerialNumber(file); 2644 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 2645 2646 if (foundSerial == -1) { 2647 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 2648 try { 2649 setSerialNumber(file, serialNumber); 2650 } catch (IOException e) { 2651 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 2652 } 2653 2654 } else if (foundSerial != serialNumber) { 2655 throw new IOException("Found serial number " + foundSerial 2656 + " doesn't match expected " + serialNumber); 2657 } 2658 } 2659 2660 /** 2661 * Set serial number stored in user directory inode. 2662 * 2663 * @throws IOException if serial number was already set 2664 */ 2665 private static void setSerialNumber(File file, int serialNumber) 2666 throws IOException { 2667 try { 2668 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 2669 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 2670 } catch (ErrnoException e) { 2671 throw e.rethrowAsIOException(); 2672 } 2673 } 2674 2675 /** 2676 * Return serial number stored in user directory inode. 2677 * 2678 * @return parsed serial number, or -1 if not set 2679 */ 2680 private static int getSerialNumber(File file) throws IOException { 2681 try { 2682 final byte[] buf = new byte[256]; 2683 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 2684 final String serial = new String(buf, 0, len); 2685 try { 2686 return Integer.parseInt(serial); 2687 } catch (NumberFormatException e) { 2688 throw new IOException("Bad serial number: " + serial); 2689 } 2690 } catch (ErrnoException e) { 2691 if (e.errno == OsConstants.ENODATA) { 2692 return -1; 2693 } else { 2694 throw e.rethrowAsIOException(); 2695 } 2696 } 2697 } 2698 2699 @Override 2700 public void setSeedAccountData(int userId, String accountName, String accountType, 2701 PersistableBundle accountOptions, boolean persist) { 2702 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 2703 synchronized (mPackagesLock) { 2704 final UserData userData; 2705 synchronized (mUsersLock) { 2706 userData = getUserDataLU(userId); 2707 if (userData == null) { 2708 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 2709 return; 2710 } 2711 userData.seedAccountName = accountName; 2712 userData.seedAccountType = accountType; 2713 userData.seedAccountOptions = accountOptions; 2714 userData.persistSeedData = persist; 2715 } 2716 if (persist) { 2717 writeUserLP(userData); 2718 } 2719 } 2720 } 2721 2722 @Override 2723 public String getSeedAccountName() throws RemoteException { 2724 checkManageUsersPermission("Cannot get seed account information"); 2725 synchronized (mUsersLock) { 2726 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2727 return userData.seedAccountName; 2728 } 2729 } 2730 2731 @Override 2732 public String getSeedAccountType() throws RemoteException { 2733 checkManageUsersPermission("Cannot get seed account information"); 2734 synchronized (mUsersLock) { 2735 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2736 return userData.seedAccountType; 2737 } 2738 } 2739 2740 @Override 2741 public PersistableBundle getSeedAccountOptions() throws RemoteException { 2742 checkManageUsersPermission("Cannot get seed account information"); 2743 synchronized (mUsersLock) { 2744 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2745 return userData.seedAccountOptions; 2746 } 2747 } 2748 2749 @Override 2750 public void clearSeedAccountData() throws RemoteException { 2751 checkManageUsersPermission("Cannot clear seed account information"); 2752 synchronized (mPackagesLock) { 2753 UserData userData; 2754 synchronized (mUsersLock) { 2755 userData = getUserDataLU(UserHandle.getCallingUserId()); 2756 if (userData == null) return; 2757 userData.clearSeedAccountData(); 2758 } 2759 writeUserLP(userData); 2760 } 2761 } 2762 2763 @Override 2764 public boolean someUserHasSeedAccount(String accountName, String accountType) 2765 throws RemoteException { 2766 checkManageUsersPermission("Cannot check seed account information"); 2767 synchronized (mUsersLock) { 2768 final int userSize = mUsers.size(); 2769 for (int i = 0; i < userSize; i++) { 2770 final UserData data = mUsers.valueAt(i); 2771 if (data.info.isInitialized()) continue; 2772 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 2773 continue; 2774 } 2775 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 2776 continue; 2777 } 2778 return true; 2779 } 2780 } 2781 return false; 2782 } 2783 2784 @Override 2785 public void onShellCommand(FileDescriptor in, FileDescriptor out, 2786 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 2787 (new Shell()).exec(this, in, out, err, args, resultReceiver); 2788 } 2789 2790 int onShellCommand(Shell shell, String cmd) { 2791 if (cmd == null) { 2792 return shell.handleDefaultCommands(cmd); 2793 } 2794 2795 final PrintWriter pw = shell.getOutPrintWriter(); 2796 try { 2797 switch(cmd) { 2798 case "list": 2799 return runList(pw); 2800 } 2801 } catch (RemoteException e) { 2802 pw.println("Remote exception: " + e); 2803 } 2804 return -1; 2805 } 2806 2807 private int runList(PrintWriter pw) throws RemoteException { 2808 final IActivityManager am = ActivityManagerNative.getDefault(); 2809 final List<UserInfo> users = getUsers(false); 2810 if (users == null) { 2811 pw.println("Error: couldn't get users"); 2812 return 1; 2813 } else { 2814 pw.println("Users:"); 2815 for (int i = 0; i < users.size(); i++) { 2816 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 2817 pw.println("\t" + users.get(i).toString() + running); 2818 } 2819 return 0; 2820 } 2821 } 2822 2823 @Override 2824 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2825 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2826 != PackageManager.PERMISSION_GRANTED) { 2827 pw.println("Permission Denial: can't dump UserManager from from pid=" 2828 + Binder.getCallingPid() 2829 + ", uid=" + Binder.getCallingUid() 2830 + " without permission " 2831 + android.Manifest.permission.DUMP); 2832 return; 2833 } 2834 2835 long now = System.currentTimeMillis(); 2836 StringBuilder sb = new StringBuilder(); 2837 synchronized (mPackagesLock) { 2838 synchronized (mUsersLock) { 2839 pw.println("Users:"); 2840 for (int i = 0; i < mUsers.size(); i++) { 2841 UserData userData = mUsers.valueAt(i); 2842 if (userData == null) { 2843 continue; 2844 } 2845 UserInfo userInfo = userData.info; 2846 final int userId = userInfo.id; 2847 pw.print(" "); pw.print(userInfo); 2848 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 2849 if (mRemovingUserIds.get(userId)) { 2850 pw.print(" <removing> "); 2851 } 2852 if (userInfo.partial) { 2853 pw.print(" <partial>"); 2854 } 2855 pw.println(); 2856 pw.print(" Created: "); 2857 if (userInfo.creationTime == 0) { 2858 pw.println("<unknown>"); 2859 } else { 2860 sb.setLength(0); 2861 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 2862 sb.append(" ago"); 2863 pw.println(sb); 2864 } 2865 pw.print(" Last logged in: "); 2866 if (userInfo.lastLoggedInTime == 0) { 2867 pw.println("<unknown>"); 2868 } else { 2869 sb.setLength(0); 2870 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 2871 sb.append(" ago"); 2872 pw.println(sb); 2873 } 2874 pw.print(" Last logged in fingerprint: "); 2875 pw.println(userInfo.lastLoggedInFingerprint); 2876 pw.print(" Has profile owner: "); 2877 pw.println(mIsUserManaged.get(userId)); 2878 pw.println(" Restrictions:"); 2879 synchronized (mRestrictionsLock) { 2880 UserRestrictionsUtils.dumpRestrictions( 2881 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 2882 pw.println(" Device policy local restrictions:"); 2883 UserRestrictionsUtils.dumpRestrictions( 2884 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 2885 pw.println(" Effective restrictions:"); 2886 UserRestrictionsUtils.dumpRestrictions( 2887 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 2888 } 2889 2890 if (userData.account != null) { 2891 pw.print(" Account name: " + userData.account); 2892 pw.println(); 2893 } 2894 2895 if (userData.seedAccountName != null) { 2896 pw.print(" Seed account name: " + userData.seedAccountName); 2897 pw.println(); 2898 if (userData.seedAccountType != null) { 2899 pw.print(" account type: " + userData.seedAccountType); 2900 pw.println(); 2901 } 2902 if (userData.seedAccountOptions != null) { 2903 pw.print(" account options exist"); 2904 pw.println(); 2905 } 2906 } 2907 } 2908 } 2909 pw.println(); 2910 pw.println(" Device policy global restrictions:"); 2911 synchronized (mRestrictionsLock) { 2912 UserRestrictionsUtils 2913 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 2914 } 2915 pw.println(); 2916 pw.println(" Guest restrictions:"); 2917 synchronized (mGuestRestrictions) { 2918 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 2919 } 2920 synchronized (mUsersLock) { 2921 pw.println(); 2922 pw.println(" Device managed: " + mIsDeviceManaged); 2923 } 2924 // Dump some capabilities 2925 pw.println(); 2926 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 2927 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 2928 pw.println(" All guests ephemeral: " + Resources.getSystem().getBoolean( 2929 com.android.internal.R.bool.config_guestUserEphemeral)); 2930 } 2931 } 2932 2933 final class MainHandler extends Handler { 2934 2935 @Override 2936 public void handleMessage(Message msg) { 2937 switch (msg.what) { 2938 case WRITE_USER_MSG: 2939 removeMessages(WRITE_USER_MSG, msg.obj); 2940 synchronized (mPackagesLock) { 2941 int userId = ((UserData) msg.obj).info.id; 2942 UserData userData = getUserDataNoChecks(userId); 2943 if (userData != null) { 2944 writeUserLP(userData); 2945 } 2946 } 2947 } 2948 } 2949 } 2950 2951 /** 2952 * @param userId 2953 * @return whether the user has been initialized yet 2954 */ 2955 boolean isInitialized(int userId) { 2956 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 2957 } 2958 2959 private class LocalService extends UserManagerInternal { 2960 @Override 2961 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 2962 @Nullable Bundle globalRestrictions) { 2963 UserManagerService.this.setDevicePolicyUserRestrictionsInner(userId, localRestrictions, 2964 globalRestrictions); 2965 } 2966 2967 @Override 2968 public Bundle getBaseUserRestrictions(int userId) { 2969 synchronized (mRestrictionsLock) { 2970 return mBaseUserRestrictions.get(userId); 2971 } 2972 } 2973 2974 @Override 2975 public void setBaseUserRestrictionsByDpmsForMigration( 2976 int userId, Bundle baseRestrictions) { 2977 synchronized (mRestrictionsLock) { 2978 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 2979 invalidateEffectiveUserRestrictionsLR(userId); 2980 } 2981 2982 final UserData userData = getUserDataNoChecks(userId); 2983 synchronized (mPackagesLock) { 2984 if (userData != null) { 2985 writeUserLP(userData); 2986 } else { 2987 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 2988 } 2989 } 2990 } 2991 2992 @Override 2993 public boolean getUserRestriction(int userId, String key) { 2994 return getUserRestrictions(userId).getBoolean(key); 2995 } 2996 2997 @Override 2998 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 2999 synchronized (mUserRestrictionsListeners) { 3000 mUserRestrictionsListeners.add(listener); 3001 } 3002 } 3003 3004 @Override 3005 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 3006 synchronized (mUserRestrictionsListeners) { 3007 mUserRestrictionsListeners.remove(listener); 3008 } 3009 } 3010 3011 @Override 3012 public void setDeviceManaged(boolean isManaged) { 3013 synchronized (mUsersLock) { 3014 mIsDeviceManaged = isManaged; 3015 } 3016 } 3017 3018 @Override 3019 public void setUserManaged(int userId, boolean isManaged) { 3020 synchronized (mUsersLock) { 3021 mIsUserManaged.put(userId, isManaged); 3022 } 3023 } 3024 3025 @Override 3026 public void setUserIcon(int userId, Bitmap bitmap) { 3027 long ident = Binder.clearCallingIdentity(); 3028 try { 3029 synchronized (mPackagesLock) { 3030 UserData userData = getUserDataNoChecks(userId); 3031 if (userData == null || userData.info.partial) { 3032 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 3033 return; 3034 } 3035 writeBitmapLP(userData.info, bitmap); 3036 writeUserLP(userData); 3037 } 3038 sendUserInfoChangedBroadcast(userId); 3039 } finally { 3040 Binder.restoreCallingIdentity(ident); 3041 } 3042 } 3043 3044 @Override 3045 public void setForceEphemeralUsers(boolean forceEphemeralUsers) { 3046 synchronized (mUsersLock) { 3047 mForceEphemeralUsers = forceEphemeralUsers; 3048 } 3049 } 3050 3051 @Override 3052 public void removeAllUsers() { 3053 if (UserHandle.USER_SYSTEM == ActivityManager.getCurrentUser()) { 3054 // Remove the non-system users straight away. 3055 removeNonSystemUsers(); 3056 } else { 3057 // Switch to the system user first and then remove the other users. 3058 BroadcastReceiver userSwitchedReceiver = new BroadcastReceiver() { 3059 @Override 3060 public void onReceive(Context context, Intent intent) { 3061 int userId = 3062 intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3063 if (userId != UserHandle.USER_SYSTEM) { 3064 return; 3065 } 3066 mContext.unregisterReceiver(this); 3067 removeNonSystemUsers(); 3068 } 3069 }; 3070 IntentFilter userSwitchedFilter = new IntentFilter(); 3071 userSwitchedFilter.addAction(Intent.ACTION_USER_SWITCHED); 3072 mContext.registerReceiver( 3073 userSwitchedReceiver, userSwitchedFilter, null, mHandler); 3074 3075 // Switch to the system user. 3076 ActivityManager am = 3077 (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 3078 am.switchUser(UserHandle.USER_SYSTEM); 3079 } 3080 } 3081 3082 @Override 3083 public void onEphemeralUserStop(int userId) { 3084 synchronized (mUsersLock) { 3085 UserInfo userInfo = getUserInfoLU(userId); 3086 if (userInfo != null && userInfo.isEphemeral()) { 3087 // Do not allow switching back to the ephemeral user again as the user is going 3088 // to be deleted. 3089 userInfo.flags |= UserInfo.FLAG_DISABLED; 3090 if (userInfo.isGuest()) { 3091 // Indicate that the guest will be deleted after it stops. 3092 userInfo.guestToRemove = true; 3093 } 3094 } 3095 } 3096 } 3097 3098 @Override 3099 public UserInfo createUserEvenWhenDisallowed(String name, int flags) { 3100 UserInfo user = createUserInternalUnchecked(name, flags, UserHandle.USER_NULL); 3101 // Keep this in sync with UserManager.createUser 3102 if (user != null && !user.isAdmin()) { 3103 setUserRestriction(UserManager.DISALLOW_SMS, true, user.id); 3104 setUserRestriction(UserManager.DISALLOW_OUTGOING_CALLS, true, user.id); 3105 } 3106 return user; 3107 } 3108 } 3109 3110 /* Remove all the users except of the system one. */ 3111 private void removeNonSystemUsers() { 3112 ArrayList<UserInfo> usersToRemove = new ArrayList<>(); 3113 synchronized (mUsersLock) { 3114 final int userSize = mUsers.size(); 3115 for (int i = 0; i < userSize; i++) { 3116 UserInfo ui = mUsers.valueAt(i).info; 3117 if (ui.id != UserHandle.USER_SYSTEM) { 3118 usersToRemove.add(ui); 3119 } 3120 } 3121 } 3122 for (UserInfo ui: usersToRemove) { 3123 removeUser(ui.id); 3124 } 3125 } 3126 3127 private class Shell extends ShellCommand { 3128 @Override 3129 public int onCommand(String cmd) { 3130 return onShellCommand(this, cmd); 3131 } 3132 3133 @Override 3134 public void onHelp() { 3135 final PrintWriter pw = getOutPrintWriter(); 3136 pw.println("User manager (user) commands:"); 3137 pw.println(" help"); 3138 pw.println(" Print this help text."); 3139 pw.println(""); 3140 pw.println(" list"); 3141 pw.println(" Prints all users on the system."); 3142 } 3143 } 3144 3145 private static void debug(String message) { 3146 Log.d(LOG_TAG, message + 3147 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 3148 } 3149} 3150