UserManagerService.java revision bd91e2f3f6aca512a02be645b2515b5e3331e177
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.ApplicationInfo; 35import android.content.pm.PackageManager; 36import android.content.pm.PackageManager.NameNotFoundException; 37import android.content.pm.UserInfo; 38import android.content.res.Resources; 39import android.graphics.Bitmap; 40import android.os.Binder; 41import android.os.Build; 42import android.os.Bundle; 43import android.os.Debug; 44import android.os.Environment; 45import android.os.FileUtils; 46import android.os.Handler; 47import android.os.IBinder; 48import android.os.IUserManager; 49import android.os.Message; 50import android.os.ParcelFileDescriptor; 51import android.os.Parcelable; 52import android.os.PersistableBundle; 53import android.os.Process; 54import android.os.RemoteException; 55import android.os.ResultReceiver; 56import android.os.SELinux; 57import android.os.ServiceManager; 58import android.os.ShellCommand; 59import android.os.UserHandle; 60import android.os.UserManager; 61import android.os.UserManagerInternal; 62import android.os.UserManagerInternal.UserRestrictionsListener; 63import android.os.storage.StorageManager; 64import android.os.storage.VolumeInfo; 65import android.system.ErrnoException; 66import android.system.Os; 67import android.system.OsConstants; 68import android.util.AtomicFile; 69import android.util.Log; 70import android.util.Slog; 71import android.util.SparseArray; 72import android.util.SparseBooleanArray; 73import android.util.TimeUtils; 74import android.util.Xml; 75 76import com.android.internal.annotations.GuardedBy; 77import com.android.internal.annotations.VisibleForTesting; 78import com.android.internal.app.IAppOpsService; 79import com.android.internal.logging.MetricsLogger; 80import com.android.internal.util.FastXmlSerializer; 81import com.android.internal.util.Preconditions; 82import com.android.internal.util.XmlUtils; 83import com.android.internal.widget.LockPatternUtils; 84import com.android.server.LocalServices; 85 86import libcore.io.IoUtils; 87import libcore.util.Objects; 88 89import org.xmlpull.v1.XmlPullParser; 90import org.xmlpull.v1.XmlPullParserException; 91import org.xmlpull.v1.XmlSerializer; 92 93import java.io.BufferedOutputStream; 94import java.io.File; 95import java.io.FileDescriptor; 96import java.io.FileInputStream; 97import java.io.FileNotFoundException; 98import java.io.FileOutputStream; 99import java.io.IOException; 100import java.io.PrintWriter; 101import java.nio.charset.StandardCharsets; 102import java.util.ArrayList; 103import java.util.List; 104 105/** 106 * Service for {@link UserManager}. 107 * 108 * Method naming convention: 109 * <ul> 110 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 111 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 112 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 113 * </ul> 114 */ 115public class UserManagerService extends IUserManager.Stub { 116 private static final String LOG_TAG = "UserManagerService"; 117 static final boolean DBG = false; // DO NOT SUBMIT WITH TRUE 118 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 119 120 private static final String TAG_NAME = "name"; 121 private static final String TAG_ACCOUNT = "account"; 122 private static final String ATTR_FLAGS = "flags"; 123 private static final String ATTR_ICON_PATH = "icon"; 124 private static final String ATTR_ID = "id"; 125 private static final String ATTR_CREATION_TIME = "created"; 126 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 127 private static final String ATTR_LAST_LOGGED_IN_FINGERPRINT = "lastLoggedInFingerprint"; 128 private static final String ATTR_SERIAL_NO = "serialNumber"; 129 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 130 private static final String ATTR_PARTIAL = "partial"; 131 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 132 private static final String ATTR_USER_VERSION = "version"; 133 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 134 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 135 private static final String ATTR_SEED_ACCOUNT_NAME = "seedAccountName"; 136 private static final String ATTR_SEED_ACCOUNT_TYPE = "seedAccountType"; 137 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 138 private static final String TAG_USERS = "users"; 139 private static final String TAG_USER = "user"; 140 private static final String TAG_RESTRICTIONS = "restrictions"; 141 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 142 private static final String TAG_ENTRY = "entry"; 143 private static final String TAG_VALUE = "value"; 144 private static final String TAG_SEED_ACCOUNT_OPTIONS = "seedAccountOptions"; 145 private static final String ATTR_KEY = "key"; 146 private static final String ATTR_VALUE_TYPE = "type"; 147 private static final String ATTR_MULTIPLE = "m"; 148 149 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 150 private static final String ATTR_TYPE_STRING = "s"; 151 private static final String ATTR_TYPE_BOOLEAN = "b"; 152 private static final String ATTR_TYPE_INTEGER = "i"; 153 private static final String ATTR_TYPE_BUNDLE = "B"; 154 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 155 156 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 157 private static final String USER_LIST_FILENAME = "userlist.xml"; 158 private static final String USER_PHOTO_FILENAME = "photo.png"; 159 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 160 161 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 162 private static final String XML_SUFFIX = ".xml"; 163 164 private static final int MIN_USER_ID = 10; 165 // We need to keep process uid within Integer.MAX_VALUE. 166 private static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 167 168 private static final int USER_VERSION = 6; 169 170 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 171 172 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 173 // without first making sure that the rest of the framework is prepared for it. 174 private static final int MAX_MANAGED_PROFILES = 1; 175 176 static final int WRITE_USER_MSG = 1; 177 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 178 179 private static final String XATTR_SERIAL = "user.serial"; 180 181 // Tron counters 182 private static final String TRON_GUEST_CREATED = "users_guest_created"; 183 private static final String TRON_USER_CREATED = "users_user_created"; 184 185 private final Context mContext; 186 private final PackageManagerService mPm; 187 private final Object mPackagesLock; 188 // Short-term lock for internal state, when interaction/sync with PM is not required 189 private final Object mUsersLock = new Object(); 190 private final Object mRestrictionsLock = new Object(); 191 192 private final Handler mHandler; 193 194 private final File mUsersDir; 195 private final File mUserListFile; 196 197 private static final IBinder mUserRestriconToken = new Binder(); 198 199 /** 200 * User-related information that is used for persisting to flash. Only UserInfo is 201 * directly exposed to other system apps. 202 */ 203 private static class UserData { 204 // Basic user information and properties 205 UserInfo info; 206 // Account name used when there is a strong association between a user and an account 207 String account; 208 // Account information for seeding into a newly created user. This could also be 209 // used for login validation for an existing user, for updating their credentials. 210 // In the latter case, data may not need to be persisted as it is only valid for the 211 // current login session. 212 String seedAccountName; 213 String seedAccountType; 214 PersistableBundle seedAccountOptions; 215 // Whether to perist the seed account information to be available after a boot 216 boolean persistSeedData; 217 218 void clearSeedAccountData() { 219 seedAccountName = null; 220 seedAccountType = null; 221 seedAccountOptions = null; 222 persistSeedData = false; 223 } 224 } 225 226 @GuardedBy("mUsersLock") 227 private final SparseArray<UserData> mUsers = new SparseArray<>(); 228 229 /** 230 * User restrictions set via UserManager. This doesn't include restrictions set by 231 * device owner / profile owners. 232 * 233 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 234 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 235 * maybe shared between {@link #mBaseUserRestrictions} and 236 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 237 * (Otherwise we won't be able to detect what restrictions have changed in 238 * {@link #updateUserRestrictionsInternalLR}. 239 */ 240 @GuardedBy("mRestrictionsLock") 241 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 242 243 /** 244 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 245 * with device / profile owner restrictions. We'll initialize it lazily; use 246 * {@link #getEffectiveUserRestrictions} to access it. 247 * 248 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 249 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 250 * maybe shared between {@link #mBaseUserRestrictions} and 251 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 252 * (Otherwise we won't be able to detect what restrictions have changed in 253 * {@link #updateUserRestrictionsInternalLR}. 254 */ 255 @GuardedBy("mRestrictionsLock") 256 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 257 258 /** 259 * User restrictions that have already been applied in 260 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 261 * that have changed since the last 262 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 263 */ 264 @GuardedBy("mRestrictionsLock") 265 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 266 267 /** 268 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 269 * that should be applied to all users, including guests. 270 */ 271 @GuardedBy("mRestrictionsLock") 272 private Bundle mDevicePolicyGlobalUserRestrictions; 273 274 /** 275 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 276 * for each user. 277 */ 278 @GuardedBy("mRestrictionsLock") 279 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 280 281 @GuardedBy("mGuestRestrictions") 282 private final Bundle mGuestRestrictions = new Bundle(); 283 284 /** 285 * Set of user IDs being actively removed. Removed IDs linger in this set 286 * for several seconds to work around a VFS caching issue. 287 */ 288 @GuardedBy("mUsersLock") 289 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 290 291 @GuardedBy("mUsersLock") 292 private int[] mUserIds; 293 @GuardedBy("mPackagesLock") 294 private int mNextSerialNumber; 295 private int mUserVersion = 0; 296 297 private IAppOpsService mAppOpsService; 298 299 private final LocalService mLocalService; 300 301 @GuardedBy("mUsersLock") 302 private boolean mIsDeviceManaged; 303 304 @GuardedBy("mUsersLock") 305 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 306 307 @GuardedBy("mUserRestrictionsListeners") 308 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 309 new ArrayList<>(); 310 311 private final LockPatternUtils mLockPatternUtils; 312 313 /** 314 * Whether all users should be created ephemeral. 315 */ 316 @GuardedBy("mUsersLock") 317 private boolean mForceEphemeralUsers; 318 319 private static UserManagerService sInstance; 320 321 public static UserManagerService getInstance() { 322 synchronized (UserManagerService.class) { 323 return sInstance; 324 } 325 } 326 327 @VisibleForTesting 328 UserManagerService(File dataDir) { 329 this(null, null, new Object(), dataDir); 330 } 331 332 /** 333 * Called by package manager to create the service. This is closely 334 * associated with the package manager, and the given lock is the 335 * package manager's own lock. 336 */ 337 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 338 this(context, pm, packagesLock, Environment.getDataDirectory()); 339 } 340 341 private UserManagerService(Context context, PackageManagerService pm, 342 Object packagesLock, File dataDir) { 343 mContext = context; 344 mPm = pm; 345 mPackagesLock = packagesLock; 346 mHandler = new MainHandler(); 347 synchronized (mPackagesLock) { 348 mUsersDir = new File(dataDir, USER_INFO_DIR); 349 mUsersDir.mkdirs(); 350 // Make zeroth user directory, for services to migrate their files to that location 351 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 352 userZeroDir.mkdirs(); 353 FileUtils.setPermissions(mUsersDir.toString(), 354 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 355 -1, -1); 356 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 357 initDefaultGuestRestrictions(); 358 readUserListLP(); 359 sInstance = this; 360 } 361 mLocalService = new LocalService(); 362 LocalServices.addService(UserManagerInternal.class, mLocalService); 363 mLockPatternUtils = new LockPatternUtils(mContext); 364 } 365 366 void systemReady() { 367 // Prune out any partially created, partially removed and ephemeral users. 368 ArrayList<UserInfo> partials = new ArrayList<>(); 369 synchronized (mUsersLock) { 370 final int userSize = mUsers.size(); 371 for (int i = 0; i < userSize; i++) { 372 UserInfo ui = mUsers.valueAt(i).info; 373 if ((ui.partial || ui.guestToRemove || ui.isEphemeral()) && i != 0) { 374 partials.add(ui); 375 } 376 } 377 } 378 final int partialsSize = partials.size(); 379 for (int i = 0; i < partialsSize; i++) { 380 UserInfo ui = partials.get(i); 381 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 382 + " (name=" + ui.name + ")"); 383 removeUserState(ui.id); 384 } 385 386 mAppOpsService = IAppOpsService.Stub.asInterface( 387 ServiceManager.getService(Context.APP_OPS_SERVICE)); 388 389 synchronized (mRestrictionsLock) { 390 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 391 } 392 393 UserInfo currentGuestUser = findCurrentGuestUser(); 394 if (currentGuestUser != null && !hasUserRestriction( 395 UserManager.DISALLOW_CONFIG_WIFI, currentGuestUser.id)) { 396 // If a guest user currently exists, apply the DISALLOW_CONFIG_WIFI option 397 // to it, in case this guest was created in a previous version where this 398 // user restriction was not a default guest restriction. 399 setUserRestriction(UserManager.DISALLOW_CONFIG_WIFI, true, currentGuestUser.id); 400 } 401 } 402 403 @Override 404 public String getUserAccount(int userId) { 405 checkManageUserAndAcrossUsersFullPermission("get user account"); 406 synchronized (mUsersLock) { 407 return mUsers.get(userId).account; 408 } 409 } 410 411 @Override 412 public void setUserAccount(int userId, String accountName) { 413 checkManageUserAndAcrossUsersFullPermission("set user account"); 414 UserData userToUpdate = null; 415 synchronized (mPackagesLock) { 416 synchronized (mUsersLock) { 417 final UserData userData = mUsers.get(userId); 418 if (userData == null) { 419 Slog.e(LOG_TAG, "User not found for setting user account: u" + userId); 420 return; 421 } 422 String currentAccount = userData.account; 423 if (!Objects.equal(currentAccount, accountName)) { 424 userData.account = accountName; 425 userToUpdate = userData; 426 } 427 } 428 429 if (userToUpdate != null) { 430 writeUserLP(userToUpdate); 431 } 432 } 433 } 434 435 @Override 436 public UserInfo getPrimaryUser() { 437 checkManageUsersPermission("query users"); 438 synchronized (mUsersLock) { 439 final int userSize = mUsers.size(); 440 for (int i = 0; i < userSize; i++) { 441 UserInfo ui = mUsers.valueAt(i).info; 442 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 443 return ui; 444 } 445 } 446 } 447 return null; 448 } 449 450 @Override 451 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 452 checkManageUsersPermission("query users"); 453 synchronized (mUsersLock) { 454 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 455 final int userSize = mUsers.size(); 456 for (int i = 0; i < userSize; i++) { 457 UserInfo ui = mUsers.valueAt(i).info; 458 if (ui.partial) { 459 continue; 460 } 461 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 462 users.add(userWithName(ui)); 463 } 464 } 465 return users; 466 } 467 } 468 469 @Override 470 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 471 if (userId != UserHandle.getCallingUserId()) { 472 checkManageUsersPermission("getting profiles related to user " + userId); 473 } 474 final long ident = Binder.clearCallingIdentity(); 475 try { 476 synchronized (mUsersLock) { 477 return getProfilesLU(userId, enabledOnly); 478 } 479 } finally { 480 Binder.restoreCallingIdentity(ident); 481 } 482 } 483 484 /** Assume permissions already checked and caller's identity cleared */ 485 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly) { 486 UserInfo user = getUserInfoLU(userId); 487 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 488 if (user == null) { 489 // Probably a dying user 490 return users; 491 } 492 final int userSize = mUsers.size(); 493 for (int i = 0; i < userSize; i++) { 494 UserInfo profile = mUsers.valueAt(i).info; 495 if (!isProfileOf(user, profile)) { 496 continue; 497 } 498 if (enabledOnly && !profile.isEnabled()) { 499 continue; 500 } 501 if (mRemovingUserIds.get(profile.id)) { 502 continue; 503 } 504 users.add(userWithName(profile)); 505 } 506 return users; 507 } 508 509 @Override 510 public int getCredentialOwnerProfile(int userHandle) { 511 checkManageUsersPermission("get the credential owner"); 512 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 513 synchronized (mUsersLock) { 514 UserInfo profileParent = getProfileParentLU(userHandle); 515 if (profileParent != null) { 516 return profileParent.id; 517 } 518 } 519 } 520 521 return userHandle; 522 } 523 524 @Override 525 public boolean isSameProfileGroup(int userId, int otherUserId) { 526 if (userId == otherUserId) return true; 527 checkManageUsersPermission("check if in the same profile group"); 528 synchronized (mPackagesLock) { 529 return isSameProfileGroupLP(userId, otherUserId); 530 } 531 } 532 533 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 534 synchronized (mUsersLock) { 535 UserInfo userInfo = getUserInfoLU(userId); 536 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 537 return false; 538 } 539 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 540 if (otherUserInfo == null 541 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 542 return false; 543 } 544 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 545 } 546 } 547 548 @Override 549 public UserInfo getProfileParent(int userHandle) { 550 checkManageUsersPermission("get the profile parent"); 551 synchronized (mUsersLock) { 552 return getProfileParentLU(userHandle); 553 } 554 } 555 556 private UserInfo getProfileParentLU(int userHandle) { 557 UserInfo profile = getUserInfoLU(userHandle); 558 if (profile == null) { 559 return null; 560 } 561 int parentUserId = profile.profileGroupId; 562 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 563 return null; 564 } else { 565 return getUserInfoLU(parentUserId); 566 } 567 } 568 569 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 570 return user.id == profile.id || 571 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 572 && user.profileGroupId == profile.profileGroupId); 573 } 574 575 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 576 UserHandle parentHandle, boolean inQuietMode) { 577 Intent intent = new Intent(Intent.ACTION_MANAGED_PROFILE_AVAILABILITY_CHANGED); 578 intent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 579 intent.putExtra(Intent.EXTRA_USER, profileHandle); 580 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 581 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 582 mContext.sendBroadcastAsUser(intent, parentHandle); 583 } 584 585 @Override 586 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 587 checkManageUsersPermission("silence profile"); 588 boolean changed = false; 589 UserInfo profile, parent; 590 synchronized (mPackagesLock) { 591 synchronized (mUsersLock) { 592 profile = getUserInfoLU(userHandle); 593 parent = getProfileParentLU(userHandle); 594 595 } 596 if (profile == null || !profile.isManagedProfile()) { 597 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 598 } 599 if (profile.isQuietModeEnabled() != enableQuietMode) { 600 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 601 writeUserLP(getUserDataLU(profile.id)); 602 changed = true; 603 } 604 } 605 if (changed) { 606 long identity = Binder.clearCallingIdentity(); 607 try { 608 if (enableQuietMode) { 609 ActivityManagerNative.getDefault().stopUser(userHandle, /* force */true, null); 610 } else { 611 ActivityManagerNative.getDefault().startUserInBackground(userHandle); 612 } 613 } catch (RemoteException e) { 614 Slog.e(LOG_TAG, "fail to start/stop user for quiet mode", e); 615 } finally { 616 Binder.restoreCallingIdentity(identity); 617 } 618 619 broadcastProfileAvailabilityChanges(profile.getUserHandle(), parent.getUserHandle(), 620 enableQuietMode); 621 } 622 } 623 624 @Override 625 public boolean isQuietModeEnabled(int userHandle) { 626 synchronized (mPackagesLock) { 627 UserInfo info; 628 synchronized (mUsersLock) { 629 info = getUserInfoLU(userHandle); 630 } 631 if (info == null || !info.isManagedProfile()) { 632 return false; 633 } 634 return info.isQuietModeEnabled(); 635 } 636 } 637 638 @Override 639 public void setUserEnabled(int userId) { 640 checkManageUsersPermission("enable user"); 641 synchronized (mPackagesLock) { 642 UserInfo info; 643 synchronized (mUsersLock) { 644 info = getUserInfoLU(userId); 645 } 646 if (info != null && !info.isEnabled()) { 647 info.flags ^= UserInfo.FLAG_DISABLED; 648 writeUserLP(getUserDataLU(info.id)); 649 } 650 } 651 } 652 653 @Override 654 public UserInfo getUserInfo(int userId) { 655 checkManageUsersPermission("query user"); 656 synchronized (mUsersLock) { 657 return userWithName(getUserInfoLU(userId)); 658 } 659 } 660 661 /** 662 * Returns a UserInfo object with the name filled in, for Owner, or the original 663 * if the name is already set. 664 */ 665 private UserInfo userWithName(UserInfo orig) { 666 if (orig != null && orig.name == null && orig.id == UserHandle.USER_SYSTEM) { 667 UserInfo withName = new UserInfo(orig); 668 withName.name = getOwnerName(); 669 return withName; 670 } else { 671 return orig; 672 } 673 } 674 675 @Override 676 public boolean isManagedProfile(int userId) { 677 int callingUserId = UserHandle.getCallingUserId(); 678 if (callingUserId != userId && !hasManageUsersPermission()) { 679 synchronized (mPackagesLock) { 680 if (!isSameProfileGroupLP(callingUserId, userId)) { 681 throw new SecurityException( 682 "You need MANAGE_USERS permission to: check if specified user a " + 683 "managed profile outside your profile group"); 684 } 685 } 686 } 687 synchronized (mUsersLock) { 688 UserInfo userInfo = getUserInfoLU(userId); 689 return userInfo != null && userInfo.isManagedProfile(); 690 } 691 } 692 693 @Override 694 public boolean isRestricted() { 695 synchronized (mUsersLock) { 696 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 697 } 698 } 699 700 @Override 701 public boolean canHaveRestrictedProfile(int userId) { 702 checkManageUsersPermission("canHaveRestrictedProfile"); 703 synchronized (mUsersLock) { 704 final UserInfo userInfo = getUserInfoLU(userId); 705 if (userInfo == null || !userInfo.canHaveProfile()) { 706 return false; 707 } 708 if (!userInfo.isAdmin()) { 709 return false; 710 } 711 // restricted profile can be created if there is no DO set and the admin user has no PO; 712 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 713 } 714 } 715 716 /* 717 * Should be locked on mUsers before calling this. 718 */ 719 private UserInfo getUserInfoLU(int userId) { 720 final UserData userData = mUsers.get(userId); 721 // If it is partial and not in the process of being removed, return as unknown user. 722 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 723 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 724 return null; 725 } 726 return userData != null ? userData.info : null; 727 } 728 729 private UserData getUserDataLU(int userId) { 730 final UserData userData = mUsers.get(userId); 731 // If it is partial and not in the process of being removed, return as unknown user. 732 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 733 return null; 734 } 735 return userData; 736 } 737 738 /** 739 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 740 * <p>No permissions checking or any addition checks are made</p> 741 */ 742 private UserInfo getUserInfoNoChecks(int userId) { 743 synchronized (mUsersLock) { 744 final UserData userData = mUsers.get(userId); 745 return userData != null ? userData.info : null; 746 } 747 } 748 749 /** 750 * Obtains {@link #mUsersLock} and return UserData from mUsers. 751 * <p>No permissions checking or any addition checks are made</p> 752 */ 753 private UserData getUserDataNoChecks(int userId) { 754 synchronized (mUsersLock) { 755 return mUsers.get(userId); 756 } 757 } 758 759 /** Called by PackageManagerService */ 760 public boolean exists(int userId) { 761 return getUserInfoNoChecks(userId) != null; 762 } 763 764 @Override 765 public void setUserName(int userId, String name) { 766 checkManageUsersPermission("rename users"); 767 boolean changed = false; 768 synchronized (mPackagesLock) { 769 UserData userData = getUserDataNoChecks(userId); 770 if (userData == null || userData.info.partial) { 771 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 772 return; 773 } 774 if (name != null && !name.equals(userData.info.name)) { 775 userData.info.name = name; 776 writeUserLP(userData); 777 changed = true; 778 } 779 } 780 if (changed) { 781 sendUserInfoChangedBroadcast(userId); 782 } 783 } 784 785 @Override 786 public void setUserIcon(int userId, Bitmap bitmap) { 787 checkManageUsersPermission("update users"); 788 if (hasUserRestriction(UserManager.DISALLOW_SET_USER_ICON, userId)) { 789 Log.w(LOG_TAG, "Cannot set user icon. DISALLOW_SET_USER_ICON is enabled."); 790 return; 791 } 792 mLocalService.setUserIcon(userId, bitmap); 793 } 794 795 796 797 private void sendUserInfoChangedBroadcast(int userId) { 798 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 799 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 800 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 801 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 802 } 803 804 @Override 805 public ParcelFileDescriptor getUserIcon(int targetUserId) { 806 String iconPath; 807 synchronized (mPackagesLock) { 808 UserInfo targetUserInfo = getUserInfoNoChecks(targetUserId); 809 if (targetUserInfo == null || targetUserInfo.partial) { 810 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + targetUserId); 811 return null; 812 } 813 814 final int callingUserId = UserHandle.getCallingUserId(); 815 final int callingGroupId = getUserInfoNoChecks(callingUserId).profileGroupId; 816 final int targetGroupId = targetUserInfo.profileGroupId; 817 final boolean sameGroup = (callingGroupId != UserInfo.NO_PROFILE_GROUP_ID 818 && callingGroupId == targetGroupId); 819 if ((callingUserId != targetUserId) && !sameGroup) { 820 checkManageUsersPermission("get the icon of a user who is not related"); 821 } 822 823 if (targetUserInfo.iconPath == null) { 824 return null; 825 } 826 iconPath = targetUserInfo.iconPath; 827 } 828 829 try { 830 return ParcelFileDescriptor.open( 831 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 832 } catch (FileNotFoundException e) { 833 Log.e(LOG_TAG, "Couldn't find icon file", e); 834 } 835 return null; 836 } 837 838 public void makeInitialized(int userId) { 839 checkManageUsersPermission("makeInitialized"); 840 boolean scheduleWriteUser = false; 841 UserData userData; 842 synchronized (mUsersLock) { 843 userData = mUsers.get(userId); 844 if (userData == null || userData.info.partial) { 845 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 846 return; 847 } 848 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 849 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 850 scheduleWriteUser = true; 851 } 852 } 853 if (scheduleWriteUser) { 854 scheduleWriteUser(userData); 855 } 856 } 857 858 /** 859 * If default guest restrictions haven't been initialized yet, add the basic 860 * restrictions. 861 */ 862 private void initDefaultGuestRestrictions() { 863 synchronized (mGuestRestrictions) { 864 if (mGuestRestrictions.isEmpty()) { 865 mGuestRestrictions.putBoolean(UserManager.DISALLOW_CONFIG_WIFI, true); 866 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 867 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 868 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 869 } 870 } 871 } 872 873 @Override 874 public Bundle getDefaultGuestRestrictions() { 875 checkManageUsersPermission("getDefaultGuestRestrictions"); 876 synchronized (mGuestRestrictions) { 877 return new Bundle(mGuestRestrictions); 878 } 879 } 880 881 @Override 882 public void setDefaultGuestRestrictions(Bundle restrictions) { 883 checkManageUsersPermission("setDefaultGuestRestrictions"); 884 synchronized (mGuestRestrictions) { 885 mGuestRestrictions.clear(); 886 mGuestRestrictions.putAll(restrictions); 887 } 888 synchronized (mPackagesLock) { 889 writeUserListLP(); 890 } 891 } 892 893 /** 894 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 895 */ 896 void setDevicePolicyUserRestrictionsInner(int userId, @NonNull Bundle local, 897 @Nullable Bundle global) { 898 Preconditions.checkNotNull(local); 899 boolean globalChanged = false; 900 boolean localChanged; 901 synchronized (mRestrictionsLock) { 902 if (global != null) { 903 // Update global. 904 globalChanged = !UserRestrictionsUtils.areEqual( 905 mDevicePolicyGlobalUserRestrictions, global); 906 if (globalChanged) { 907 mDevicePolicyGlobalUserRestrictions = global; 908 } 909 } 910 { 911 // Update local. 912 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 913 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 914 if (localChanged) { 915 mDevicePolicyLocalUserRestrictions.put(userId, local); 916 } 917 } 918 } 919 if (DBG) { 920 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 921 + " global=" + global + (globalChanged ? " (changed)" : "") 922 + " local=" + local + (localChanged ? " (changed)" : "") 923 ); 924 } 925 // Don't call them within the mRestrictionsLock. 926 synchronized (mPackagesLock) { 927 if (globalChanged) { 928 writeUserListLP(); 929 } 930 if (localChanged) { 931 writeUserLP(getUserDataNoChecks(userId)); 932 } 933 } 934 935 synchronized (mRestrictionsLock) { 936 if (globalChanged) { 937 applyUserRestrictionsForAllUsersLR(); 938 } else if (localChanged) { 939 applyUserRestrictionsLR(userId); 940 } 941 } 942 } 943 944 @GuardedBy("mRestrictionsLock") 945 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 946 final Bundle baseRestrictions = 947 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 948 final Bundle global = mDevicePolicyGlobalUserRestrictions; 949 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 950 951 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 952 // Common case first. 953 return baseRestrictions; 954 } 955 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 956 UserRestrictionsUtils.merge(effective, global); 957 UserRestrictionsUtils.merge(effective, local); 958 959 return effective; 960 } 961 962 @GuardedBy("mRestrictionsLock") 963 private void invalidateEffectiveUserRestrictionsLR(int userId) { 964 if (DBG) { 965 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 966 } 967 mCachedEffectiveUserRestrictions.remove(userId); 968 } 969 970 private Bundle getEffectiveUserRestrictions(int userId) { 971 synchronized (mRestrictionsLock) { 972 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 973 if (restrictions == null) { 974 restrictions = computeEffectiveUserRestrictionsLR(userId); 975 mCachedEffectiveUserRestrictions.put(userId, restrictions); 976 } 977 return restrictions; 978 } 979 } 980 981 /** @return a specific user restriction that's in effect currently. */ 982 @Override 983 public boolean hasUserRestriction(String restrictionKey, int userId) { 984 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 985 return false; 986 } 987 Bundle restrictions = getEffectiveUserRestrictions(userId); 988 return restrictions != null && restrictions.getBoolean(restrictionKey); 989 } 990 991 /** 992 * @return UserRestrictions that are in effect currently. This always returns a new 993 * {@link Bundle}. 994 */ 995 @Override 996 public Bundle getUserRestrictions(int userId) { 997 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 998 } 999 1000 @Override 1001 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 1002 checkManageUsersPermission("hasBaseUserRestriction"); 1003 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1004 return false; 1005 } 1006 synchronized (mRestrictionsLock) { 1007 Bundle bundle = mBaseUserRestrictions.get(userId); 1008 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 1009 } 1010 } 1011 1012 @Override 1013 public void setUserRestriction(String key, boolean value, int userId) { 1014 checkManageUsersPermission("setUserRestriction"); 1015 if (!UserRestrictionsUtils.isValidRestriction(key)) { 1016 return; 1017 } 1018 synchronized (mRestrictionsLock) { 1019 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 1020 // a copy. 1021 final Bundle newRestrictions = UserRestrictionsUtils.clone( 1022 mBaseUserRestrictions.get(userId)); 1023 newRestrictions.putBoolean(key, value); 1024 1025 updateUserRestrictionsInternalLR(newRestrictions, userId); 1026 } 1027 } 1028 1029 /** 1030 * Optionally updating user restrictions, calculate the effective user restrictions and also 1031 * propagate to other services and system settings. 1032 * 1033 * @param newRestrictions User restrictions to set. 1034 * If null, will not update user restrictions and only does the propagation. 1035 * @param userId target user ID. 1036 */ 1037 @GuardedBy("mRestrictionsLock") 1038 private void updateUserRestrictionsInternalLR( 1039 @Nullable Bundle newRestrictions, int userId) { 1040 1041 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 1042 mAppliedUserRestrictions.get(userId)); 1043 1044 // Update base restrictions. 1045 if (newRestrictions != null) { 1046 // If newRestrictions == the current one, it's probably a bug. 1047 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 1048 1049 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 1050 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 1051 != newRestrictions); 1052 1053 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 1054 mBaseUserRestrictions.put(userId, newRestrictions); 1055 scheduleWriteUser(getUserDataNoChecks(userId)); 1056 } 1057 } 1058 1059 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 1060 1061 mCachedEffectiveUserRestrictions.put(userId, effective); 1062 1063 // Apply the new restrictions. 1064 if (DBG) { 1065 debug("Applying user restrictions: userId=" + userId 1066 + " new=" + effective + " prev=" + prevAppliedRestrictions); 1067 } 1068 1069 if (mAppOpsService != null) { // We skip it until system-ready. 1070 final long token = Binder.clearCallingIdentity(); 1071 try { 1072 mAppOpsService.setUserRestrictions(effective, mUserRestriconToken, userId); 1073 } catch (RemoteException e) { 1074 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1075 } finally { 1076 Binder.restoreCallingIdentity(token); 1077 } 1078 } 1079 1080 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1081 1082 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1083 } 1084 1085 private void propagateUserRestrictionsLR(final int userId, 1086 Bundle newRestrictions, Bundle prevRestrictions) { 1087 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1088 // actually, but we still need some kind of synchronization otherwise we might end up 1089 // calling listeners out-of-order, thus "LR". 1090 1091 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1092 return; 1093 } 1094 1095 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1096 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1097 1098 mHandler.post(new Runnable() { 1099 @Override 1100 public void run() { 1101 UserRestrictionsUtils.applyUserRestrictions( 1102 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1103 1104 final UserRestrictionsListener[] listeners; 1105 synchronized (mUserRestrictionsListeners) { 1106 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1107 mUserRestrictionsListeners.toArray(listeners); 1108 } 1109 for (int i = 0; i < listeners.length; i++) { 1110 listeners[i].onUserRestrictionsChanged(userId, 1111 newRestrictionsFinal, prevRestrictionsFinal); 1112 } 1113 } 1114 }); 1115 } 1116 1117 // Package private for the inner class. 1118 void applyUserRestrictionsLR(int userId) { 1119 updateUserRestrictionsInternalLR(null, userId); 1120 } 1121 1122 @GuardedBy("mRestrictionsLock") 1123 // Package private for the inner class. 1124 void applyUserRestrictionsForAllUsersLR() { 1125 if (DBG) { 1126 debug("applyUserRestrictionsForAllUsersLR"); 1127 } 1128 // First, invalidate all cached values. 1129 mCachedEffectiveUserRestrictions.clear(); 1130 1131 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 1132 // it on a handler. 1133 final Runnable r = new Runnable() { 1134 @Override 1135 public void run() { 1136 // Then get the list of running users. 1137 final int[] runningUsers; 1138 try { 1139 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 1140 } catch (RemoteException e) { 1141 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 1142 return; 1143 } 1144 // Then re-calculate the effective restrictions and apply, only for running users. 1145 // It's okay if a new user has started after the getRunningUserIds() call, 1146 // because we'll do the same thing (re-calculate the restrictions and apply) 1147 // when we start a user. 1148 synchronized (mRestrictionsLock) { 1149 for (int i = 0; i < runningUsers.length; i++) { 1150 applyUserRestrictionsLR(runningUsers[i]); 1151 } 1152 } 1153 } 1154 }; 1155 mHandler.post(r); 1156 } 1157 1158 /** 1159 * Check if we've hit the limit of how many users can be created. 1160 */ 1161 private boolean isUserLimitReached() { 1162 int count; 1163 synchronized (mUsersLock) { 1164 count = getAliveUsersExcludingGuestsCountLU(); 1165 } 1166 return count >= UserManager.getMaxSupportedUsers(); 1167 } 1168 1169 @Override 1170 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1171 checkManageUsersPermission("check if more managed profiles can be added."); 1172 if (ActivityManager.isLowRamDeviceStatic()) { 1173 return false; 1174 } 1175 if (!mContext.getPackageManager().hasSystemFeature( 1176 PackageManager.FEATURE_MANAGED_USERS)) { 1177 return false; 1178 } 1179 // Limit number of managed profiles that can be created 1180 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1181 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1182 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1183 return false; 1184 } 1185 synchronized(mUsersLock) { 1186 UserInfo userInfo = getUserInfoLU(userId); 1187 if (!userInfo.canHaveProfile()) { 1188 return false; 1189 } 1190 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1191 - profilesRemovedCount; 1192 // We allow creating a managed profile in the special case where there is only one user. 1193 return usersCountAfterRemoving == 1 1194 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1195 } 1196 } 1197 1198 private int getAliveUsersExcludingGuestsCountLU() { 1199 int aliveUserCount = 0; 1200 final int totalUserCount = mUsers.size(); 1201 // Skip over users being removed 1202 for (int i = 0; i < totalUserCount; i++) { 1203 UserInfo user = mUsers.valueAt(i).info; 1204 if (!mRemovingUserIds.get(user.id) 1205 && !user.isGuest() && !user.partial) { 1206 aliveUserCount++; 1207 } 1208 } 1209 return aliveUserCount; 1210 } 1211 1212 /** 1213 * Enforces that only the system UID or root's UID or apps that have the 1214 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1215 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1216 * permissions can make certain calls to the UserManager. 1217 * 1218 * @param message used as message if SecurityException is thrown 1219 * @throws SecurityException if the caller does not have enough privilege. 1220 */ 1221 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1222 final int uid = Binder.getCallingUid(); 1223 if (uid != Process.SYSTEM_UID && uid != 0 1224 && ActivityManager.checkComponentPermission( 1225 Manifest.permission.MANAGE_USERS, 1226 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1227 && ActivityManager.checkComponentPermission( 1228 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1229 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1230 throw new SecurityException( 1231 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1232 + message); 1233 } 1234 } 1235 1236 /** 1237 * Enforces that only the system UID or root's UID or apps that have the 1238 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1239 * permission can make certain calls to the UserManager. 1240 * 1241 * @param message used as message if SecurityException is thrown 1242 * @throws SecurityException if the caller is not system or root 1243 * @see #hasManageUsersPermission() 1244 */ 1245 private static final void checkManageUsersPermission(String message) { 1246 if (!hasManageUsersPermission()) { 1247 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1248 } 1249 } 1250 1251 /** 1252 * @return whether the calling UID is system UID or root's UID or the calling app has the 1253 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS}. 1254 */ 1255 private static final boolean hasManageUsersPermission() { 1256 final int callingUid = Binder.getCallingUid(); 1257 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1258 || callingUid == Process.ROOT_UID 1259 || ActivityManager.checkComponentPermission( 1260 android.Manifest.permission.MANAGE_USERS, 1261 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1262 } 1263 1264 /** 1265 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1266 * UserManager. 1267 * 1268 * @param message used as message if SecurityException is thrown 1269 * @throws SecurityException if the caller is not system or root 1270 */ 1271 private static void checkSystemOrRoot(String message) { 1272 final int uid = Binder.getCallingUid(); 1273 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1274 throw new SecurityException("Only system may: " + message); 1275 } 1276 } 1277 1278 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1279 try { 1280 File dir = new File(mUsersDir, Integer.toString(info.id)); 1281 File file = new File(dir, USER_PHOTO_FILENAME); 1282 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1283 if (!dir.exists()) { 1284 dir.mkdir(); 1285 FileUtils.setPermissions( 1286 dir.getPath(), 1287 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1288 -1, -1); 1289 } 1290 FileOutputStream os; 1291 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1292 && tmp.renameTo(file) && SELinux.restorecon(file)) { 1293 info.iconPath = file.getAbsolutePath(); 1294 } 1295 try { 1296 os.close(); 1297 } catch (IOException ioe) { 1298 // What the ... ! 1299 } 1300 tmp.delete(); 1301 } catch (FileNotFoundException e) { 1302 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1303 } 1304 } 1305 1306 /** 1307 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1308 * cache it elsewhere. 1309 * @return the array of user ids. 1310 */ 1311 public int[] getUserIds() { 1312 synchronized (mUsersLock) { 1313 return mUserIds; 1314 } 1315 } 1316 1317 private void readUserListLP() { 1318 if (!mUserListFile.exists()) { 1319 fallbackToSingleUserLP(); 1320 return; 1321 } 1322 FileInputStream fis = null; 1323 AtomicFile userListFile = new AtomicFile(mUserListFile); 1324 try { 1325 fis = userListFile.openRead(); 1326 XmlPullParser parser = Xml.newPullParser(); 1327 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1328 int type; 1329 while ((type = parser.next()) != XmlPullParser.START_TAG 1330 && type != XmlPullParser.END_DOCUMENT) { 1331 // Skip 1332 } 1333 1334 if (type != XmlPullParser.START_TAG) { 1335 Slog.e(LOG_TAG, "Unable to read user list"); 1336 fallbackToSingleUserLP(); 1337 return; 1338 } 1339 1340 mNextSerialNumber = -1; 1341 if (parser.getName().equals(TAG_USERS)) { 1342 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1343 if (lastSerialNumber != null) { 1344 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1345 } 1346 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1347 if (versionNumber != null) { 1348 mUserVersion = Integer.parseInt(versionNumber); 1349 } 1350 } 1351 1352 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1353 1354 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1355 if (type == XmlPullParser.START_TAG) { 1356 final String name = parser.getName(); 1357 if (name.equals(TAG_USER)) { 1358 String id = parser.getAttributeValue(null, ATTR_ID); 1359 1360 UserData userData = readUserLP(Integer.parseInt(id)); 1361 1362 if (userData != null) { 1363 synchronized (mUsersLock) { 1364 mUsers.put(userData.info.id, userData); 1365 if (mNextSerialNumber < 0 1366 || mNextSerialNumber <= userData.info.id) { 1367 mNextSerialNumber = userData.info.id + 1; 1368 } 1369 } 1370 } 1371 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1372 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1373 && type != XmlPullParser.END_TAG) { 1374 if (type == XmlPullParser.START_TAG) { 1375 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1376 synchronized (mGuestRestrictions) { 1377 UserRestrictionsUtils 1378 .readRestrictions(parser, mGuestRestrictions); 1379 } 1380 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1381 ) { 1382 UserRestrictionsUtils.readRestrictions(parser, 1383 newDevicePolicyGlobalUserRestrictions); 1384 } 1385 break; 1386 } 1387 } 1388 } 1389 } 1390 } 1391 synchronized (mRestrictionsLock) { 1392 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1393 } 1394 updateUserIds(); 1395 upgradeIfNecessaryLP(); 1396 } catch (IOException | XmlPullParserException e) { 1397 fallbackToSingleUserLP(); 1398 } finally { 1399 IoUtils.closeQuietly(fis); 1400 } 1401 } 1402 1403 /** 1404 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1405 */ 1406 private void upgradeIfNecessaryLP() { 1407 final int originalVersion = mUserVersion; 1408 int userVersion = mUserVersion; 1409 if (userVersion < 1) { 1410 // Assign a proper name for the owner, if not initialized correctly before 1411 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1412 if ("Primary".equals(userData.info.name)) { 1413 userData.info.name = 1414 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1415 scheduleWriteUser(userData); 1416 } 1417 userVersion = 1; 1418 } 1419 1420 if (userVersion < 2) { 1421 // Owner should be marked as initialized 1422 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1423 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1424 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1425 scheduleWriteUser(userData); 1426 } 1427 userVersion = 2; 1428 } 1429 1430 1431 if (userVersion < 4) { 1432 userVersion = 4; 1433 } 1434 1435 if (userVersion < 5) { 1436 initDefaultGuestRestrictions(); 1437 userVersion = 5; 1438 } 1439 1440 if (userVersion < 6) { 1441 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1442 synchronized (mUsersLock) { 1443 for (int i = 0; i < mUsers.size(); i++) { 1444 UserData userData = mUsers.valueAt(i); 1445 // In non-split mode, only user 0 can have restricted profiles 1446 if (!splitSystemUser && userData.info.isRestricted() 1447 && (userData.info.restrictedProfileParentId 1448 == UserInfo.NO_PROFILE_GROUP_ID)) { 1449 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1450 scheduleWriteUser(userData); 1451 } 1452 } 1453 } 1454 userVersion = 6; 1455 } 1456 1457 if (userVersion < USER_VERSION) { 1458 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1459 + USER_VERSION); 1460 } else { 1461 mUserVersion = userVersion; 1462 1463 if (originalVersion < mUserVersion) { 1464 writeUserListLP(); 1465 } 1466 } 1467 } 1468 1469 private void fallbackToSingleUserLP() { 1470 int flags = UserInfo.FLAG_INITIALIZED; 1471 // In split system user mode, the admin and primary flags are assigned to the first human 1472 // user. 1473 if (!UserManager.isSplitSystemUser()) { 1474 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1475 } 1476 // Create the system user 1477 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, null, null, flags); 1478 UserData userData = new UserData(); 1479 userData.info = system; 1480 synchronized (mUsersLock) { 1481 mUsers.put(system.id, userData); 1482 } 1483 mNextSerialNumber = MIN_USER_ID; 1484 mUserVersion = USER_VERSION; 1485 1486 Bundle restrictions = new Bundle(); 1487 synchronized (mRestrictionsLock) { 1488 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1489 } 1490 1491 updateUserIds(); 1492 initDefaultGuestRestrictions(); 1493 1494 writeUserListLP(); 1495 writeUserLP(userData); 1496 } 1497 1498 private String getOwnerName() { 1499 return mContext.getResources().getString(com.android.internal.R.string.owner_name); 1500 } 1501 1502 private void scheduleWriteUser(UserData UserData) { 1503 if (DBG) { 1504 debug("scheduleWriteUser"); 1505 } 1506 // No need to wrap it within a lock -- worst case, we'll just post the same message 1507 // twice. 1508 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1509 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1510 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1511 } 1512 } 1513 1514 /* 1515 * Writes the user file in this format: 1516 * 1517 * <user flags="20039023" id="0"> 1518 * <name>Primary</name> 1519 * </user> 1520 */ 1521 private void writeUserLP(UserData userData) { 1522 if (DBG) { 1523 debug("writeUserLP " + userData); 1524 } 1525 FileOutputStream fos = null; 1526 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1527 try { 1528 fos = userFile.startWrite(); 1529 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1530 1531 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1532 final XmlSerializer serializer = new FastXmlSerializer(); 1533 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1534 serializer.startDocument(null, true); 1535 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1536 1537 final UserInfo userInfo = userData.info; 1538 serializer.startTag(null, TAG_USER); 1539 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1540 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1541 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1542 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1543 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1544 Long.toString(userInfo.lastLoggedInTime)); 1545 serializer.attribute(null, ATTR_LAST_LOGGED_IN_FINGERPRINT, 1546 userInfo.lastLoggedInFingerprint); 1547 if (userInfo.iconPath != null) { 1548 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1549 } 1550 if (userInfo.partial) { 1551 serializer.attribute(null, ATTR_PARTIAL, "true"); 1552 } 1553 if (userInfo.guestToRemove) { 1554 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1555 } 1556 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1557 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1558 Integer.toString(userInfo.profileGroupId)); 1559 } 1560 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1561 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1562 Integer.toString(userInfo.restrictedProfileParentId)); 1563 } 1564 // Write seed data 1565 if (userData.persistSeedData) { 1566 if (userData.seedAccountName != null) { 1567 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 1568 } 1569 if (userData.seedAccountType != null) { 1570 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 1571 } 1572 } 1573 if (userInfo.name != null) { 1574 serializer.startTag(null, TAG_NAME); 1575 serializer.text(userInfo.name); 1576 serializer.endTag(null, TAG_NAME); 1577 } 1578 synchronized (mRestrictionsLock) { 1579 UserRestrictionsUtils.writeRestrictions(serializer, 1580 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1581 UserRestrictionsUtils.writeRestrictions(serializer, 1582 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1583 TAG_DEVICE_POLICY_RESTRICTIONS); 1584 } 1585 1586 if (userData.account != null) { 1587 serializer.startTag(null, TAG_ACCOUNT); 1588 serializer.text(userData.account); 1589 serializer.endTag(null, TAG_ACCOUNT); 1590 } 1591 1592 if (userData.persistSeedData && userData.seedAccountOptions != null) { 1593 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1594 userData.seedAccountOptions.saveToXml(serializer); 1595 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1596 } 1597 serializer.endTag(null, TAG_USER); 1598 1599 serializer.endDocument(); 1600 userFile.finishWrite(fos); 1601 } catch (Exception ioe) { 1602 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id + "\n" + ioe); 1603 userFile.failWrite(fos); 1604 } 1605 } 1606 1607 /* 1608 * Writes the user list file in this format: 1609 * 1610 * <users nextSerialNumber="3"> 1611 * <user id="0"></user> 1612 * <user id="2"></user> 1613 * </users> 1614 */ 1615 private void writeUserListLP() { 1616 if (DBG) { 1617 debug("writeUserList"); 1618 } 1619 FileOutputStream fos = null; 1620 AtomicFile userListFile = new AtomicFile(mUserListFile); 1621 try { 1622 fos = userListFile.startWrite(); 1623 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1624 1625 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1626 final XmlSerializer serializer = new FastXmlSerializer(); 1627 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1628 serializer.startDocument(null, true); 1629 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1630 1631 serializer.startTag(null, TAG_USERS); 1632 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1633 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1634 1635 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1636 synchronized (mGuestRestrictions) { 1637 UserRestrictionsUtils 1638 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1639 } 1640 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1641 synchronized (mRestrictionsLock) { 1642 UserRestrictionsUtils.writeRestrictions(serializer, 1643 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1644 } 1645 int[] userIdsToWrite; 1646 synchronized (mUsersLock) { 1647 userIdsToWrite = new int[mUsers.size()]; 1648 for (int i = 0; i < userIdsToWrite.length; i++) { 1649 UserInfo user = mUsers.valueAt(i).info; 1650 userIdsToWrite[i] = user.id; 1651 } 1652 } 1653 for (int id : userIdsToWrite) { 1654 serializer.startTag(null, TAG_USER); 1655 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1656 serializer.endTag(null, TAG_USER); 1657 } 1658 1659 serializer.endTag(null, TAG_USERS); 1660 1661 serializer.endDocument(); 1662 userListFile.finishWrite(fos); 1663 } catch (Exception e) { 1664 userListFile.failWrite(fos); 1665 Slog.e(LOG_TAG, "Error writing user list"); 1666 } 1667 } 1668 1669 private UserData readUserLP(int id) { 1670 int flags = 0; 1671 int serialNumber = id; 1672 String name = null; 1673 String account = null; 1674 String iconPath = null; 1675 long creationTime = 0L; 1676 long lastLoggedInTime = 0L; 1677 String lastLoggedInFingerprint = null; 1678 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 1679 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 1680 boolean partial = false; 1681 boolean guestToRemove = false; 1682 boolean persistSeedData = false; 1683 String seedAccountName = null; 1684 String seedAccountType = null; 1685 PersistableBundle seedAccountOptions = null; 1686 Bundle baseRestrictions = new Bundle(); 1687 Bundle localRestrictions = new Bundle(); 1688 1689 FileInputStream fis = null; 1690 try { 1691 AtomicFile userFile = 1692 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 1693 fis = userFile.openRead(); 1694 XmlPullParser parser = Xml.newPullParser(); 1695 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1696 int type; 1697 while ((type = parser.next()) != XmlPullParser.START_TAG 1698 && type != XmlPullParser.END_DOCUMENT) { 1699 // Skip 1700 } 1701 1702 if (type != XmlPullParser.START_TAG) { 1703 Slog.e(LOG_TAG, "Unable to read user " + id); 1704 return null; 1705 } 1706 1707 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 1708 int storedId = readIntAttribute(parser, ATTR_ID, -1); 1709 if (storedId != id) { 1710 Slog.e(LOG_TAG, "User id does not match the file name"); 1711 return null; 1712 } 1713 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 1714 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 1715 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 1716 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 1717 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 1718 lastLoggedInFingerprint = parser.getAttributeValue(null, 1719 ATTR_LAST_LOGGED_IN_FINGERPRINT); 1720 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 1721 UserInfo.NO_PROFILE_GROUP_ID); 1722 restrictedProfileParentId = readIntAttribute(parser, 1723 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 1724 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 1725 if ("true".equals(valueString)) { 1726 partial = true; 1727 } 1728 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 1729 if ("true".equals(valueString)) { 1730 guestToRemove = true; 1731 } 1732 1733 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 1734 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 1735 if (seedAccountName != null || seedAccountType != null) { 1736 persistSeedData = true; 1737 } 1738 1739 int outerDepth = parser.getDepth(); 1740 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1741 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1742 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1743 continue; 1744 } 1745 String tag = parser.getName(); 1746 if (TAG_NAME.equals(tag)) { 1747 type = parser.next(); 1748 if (type == XmlPullParser.TEXT) { 1749 name = parser.getText(); 1750 } 1751 } else if (TAG_RESTRICTIONS.equals(tag)) { 1752 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 1753 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 1754 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 1755 } else if (TAG_ACCOUNT.equals(tag)) { 1756 type = parser.next(); 1757 if (type == XmlPullParser.TEXT) { 1758 account = parser.getText(); 1759 } 1760 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 1761 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 1762 persistSeedData = true; 1763 } 1764 } 1765 } 1766 1767 // Create the UserInfo object that gets passed around 1768 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 1769 userInfo.serialNumber = serialNumber; 1770 userInfo.creationTime = creationTime; 1771 userInfo.lastLoggedInTime = lastLoggedInTime; 1772 userInfo.lastLoggedInFingerprint = lastLoggedInFingerprint; 1773 userInfo.partial = partial; 1774 userInfo.guestToRemove = guestToRemove; 1775 userInfo.profileGroupId = profileGroupId; 1776 userInfo.restrictedProfileParentId = restrictedProfileParentId; 1777 1778 // Create the UserData object that's internal to this class 1779 UserData userData = new UserData(); 1780 userData.info = userInfo; 1781 userData.account = account; 1782 userData.seedAccountName = seedAccountName; 1783 userData.seedAccountType = seedAccountType; 1784 userData.persistSeedData = persistSeedData; 1785 userData.seedAccountOptions = seedAccountOptions; 1786 1787 synchronized (mRestrictionsLock) { 1788 mBaseUserRestrictions.put(id, baseRestrictions); 1789 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 1790 } 1791 return userData; 1792 } catch (IOException ioe) { 1793 } catch (XmlPullParserException pe) { 1794 } finally { 1795 if (fis != null) { 1796 try { 1797 fis.close(); 1798 } catch (IOException e) { 1799 } 1800 } 1801 } 1802 return null; 1803 } 1804 1805 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1806 String valueString = parser.getAttributeValue(null, attr); 1807 if (valueString == null) return defaultValue; 1808 try { 1809 return Integer.parseInt(valueString); 1810 } catch (NumberFormatException nfe) { 1811 return defaultValue; 1812 } 1813 } 1814 1815 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1816 String valueString = parser.getAttributeValue(null, attr); 1817 if (valueString == null) return defaultValue; 1818 try { 1819 return Long.parseLong(valueString); 1820 } catch (NumberFormatException nfe) { 1821 return defaultValue; 1822 } 1823 } 1824 1825 /** 1826 * Removes the app restrictions file for a specific package and user id, if it exists. 1827 */ 1828 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1829 synchronized (mPackagesLock) { 1830 File dir = Environment.getUserSystemDirectory(userId); 1831 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1832 if (resFile.exists()) { 1833 resFile.delete(); 1834 } 1835 } 1836 } 1837 1838 @Override 1839 public UserInfo createProfileForUser(String name, int flags, int userId) { 1840 checkManageUsersPermission("Only the system can create users"); 1841 return createUserInternal(name, flags, userId); 1842 } 1843 1844 @Override 1845 public UserInfo createUser(String name, int flags) { 1846 checkManageUsersPermission("Only the system can create users"); 1847 return createUserInternal(name, flags, UserHandle.USER_NULL); 1848 } 1849 1850 private UserInfo createUserInternal(String name, int flags, int parentId) { 1851 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 1852 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1853 return null; 1854 } 1855 return createUserInternalUnchecked(name, flags, parentId); 1856 } 1857 1858 private UserInfo createUserInternalUnchecked(String name, int flags, int parentId) { 1859 if (ActivityManager.isLowRamDeviceStatic()) { 1860 return null; 1861 } 1862 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1863 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 1864 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 1865 final long ident = Binder.clearCallingIdentity(); 1866 UserInfo userInfo; 1867 UserData userData; 1868 final int userId; 1869 try { 1870 synchronized (mPackagesLock) { 1871 UserData parent = null; 1872 if (parentId != UserHandle.USER_NULL) { 1873 synchronized (mUsersLock) { 1874 parent = getUserDataLU(parentId); 1875 } 1876 if (parent == null) return null; 1877 } 1878 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 1879 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 1880 return null; 1881 } 1882 if (!isGuest && !isManagedProfile && isUserLimitReached()) { 1883 // If we're not adding a guest user or a managed profile and the limit has 1884 // been reached, cannot add a user. 1885 return null; 1886 } 1887 // If we're adding a guest and there already exists one, bail. 1888 if (isGuest && findCurrentGuestUser() != null) { 1889 return null; 1890 } 1891 // In legacy mode, restricted profile's parent can only be the owner user 1892 if (isRestricted && !UserManager.isSplitSystemUser() 1893 && (parentId != UserHandle.USER_SYSTEM)) { 1894 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 1895 return null; 1896 } 1897 if (isRestricted && UserManager.isSplitSystemUser()) { 1898 if (parent == null) { 1899 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 1900 + "specified"); 1901 return null; 1902 } 1903 if (!parent.info.canHaveProfile()) { 1904 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 1905 + "created for the specified parent user id " + parentId); 1906 return null; 1907 } 1908 } 1909 if (!UserManager.isSplitSystemUser() && (flags & UserInfo.FLAG_EPHEMERAL) != 0) { 1910 Log.e(LOG_TAG, 1911 "Ephemeral users are supported on split-system-user systems only."); 1912 return null; 1913 } 1914 // In split system user mode, we assign the first human user the primary flag. 1915 // And if there is no device owner, we also assign the admin flag to primary user. 1916 if (UserManager.isSplitSystemUser() 1917 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 1918 flags |= UserInfo.FLAG_PRIMARY; 1919 synchronized (mUsersLock) { 1920 if (!mIsDeviceManaged) { 1921 flags |= UserInfo.FLAG_ADMIN; 1922 } 1923 } 1924 } 1925 1926 userId = getNextAvailableId(); 1927 Environment.getUserSystemDirectory(userId).mkdirs(); 1928 boolean ephemeralGuests = Resources.getSystem() 1929 .getBoolean(com.android.internal.R.bool.config_guestUserEphemeral); 1930 1931 synchronized (mUsersLock) { 1932 // Add ephemeral flag to guests/users if required. Also inherit it from parent. 1933 if ((isGuest && ephemeralGuests) || mForceEphemeralUsers 1934 || (parent != null && parent.info.isEphemeral())) { 1935 flags |= UserInfo.FLAG_EPHEMERAL; 1936 } 1937 1938 userInfo = new UserInfo(userId, name, null, flags); 1939 userInfo.serialNumber = mNextSerialNumber++; 1940 long now = System.currentTimeMillis(); 1941 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1942 userInfo.partial = true; 1943 userData = new UserData(); 1944 userData.info = userInfo; 1945 mUsers.put(userId, userData); 1946 } 1947 writeUserListLP(); 1948 if (parent != null) { 1949 if (isManagedProfile) { 1950 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1951 parent.info.profileGroupId = parent.info.id; 1952 writeUserLP(parent); 1953 } 1954 userInfo.profileGroupId = parent.info.profileGroupId; 1955 } else if (isRestricted) { 1956 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 1957 parent.info.restrictedProfileParentId = parent.info.id; 1958 writeUserLP(parent); 1959 } 1960 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 1961 } 1962 } 1963 } 1964 final StorageManager storage = mContext.getSystemService(StorageManager.class); 1965 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 1966 prepareUserStorage(userId, userInfo.serialNumber, 1967 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 1968 mPm.createNewUser(userId); 1969 userInfo.partial = false; 1970 synchronized (mPackagesLock) { 1971 writeUserLP(userData); 1972 } 1973 updateUserIds(); 1974 Bundle restrictions = new Bundle(); 1975 if (isGuest) { 1976 synchronized (mGuestRestrictions) { 1977 restrictions.putAll(mGuestRestrictions); 1978 } 1979 } 1980 synchronized (mRestrictionsLock) { 1981 mBaseUserRestrictions.append(userId, restrictions); 1982 } 1983 mPm.newUserCreated(userId); 1984 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 1985 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 1986 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 1987 android.Manifest.permission.MANAGE_USERS); 1988 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 1989 } finally { 1990 Binder.restoreCallingIdentity(ident); 1991 } 1992 return userInfo; 1993 } 1994 1995 /** 1996 * @hide 1997 */ 1998 @Override 1999 public UserInfo createRestrictedProfile(String name, int parentUserId) { 2000 checkManageUsersPermission("setupRestrictedProfile"); 2001 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 2002 if (user == null) { 2003 return null; 2004 } 2005 long identity = Binder.clearCallingIdentity(); 2006 try { 2007 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 2008 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 2009 // the putIntForUser() will fail. 2010 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 2011 android.provider.Settings.Secure.LOCATION_MODE, 2012 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 2013 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 2014 } finally { 2015 Binder.restoreCallingIdentity(identity); 2016 } 2017 return user; 2018 } 2019 2020 /** 2021 * Find the current guest user. If the Guest user is partial, 2022 * then do not include it in the results as it is about to die. 2023 */ 2024 private UserInfo findCurrentGuestUser() { 2025 synchronized (mUsersLock) { 2026 final int size = mUsers.size(); 2027 for (int i = 0; i < size; i++) { 2028 final UserInfo user = mUsers.valueAt(i).info; 2029 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 2030 return user; 2031 } 2032 } 2033 } 2034 return null; 2035 } 2036 2037 /** 2038 * Mark this guest user for deletion to allow us to create another guest 2039 * and switch to that user before actually removing this guest. 2040 * @param userHandle the userid of the current guest 2041 * @return whether the user could be marked for deletion 2042 */ 2043 @Override 2044 public boolean markGuestForDeletion(int userHandle) { 2045 checkManageUsersPermission("Only the system can remove users"); 2046 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2047 UserManager.DISALLOW_REMOVE_USER, false)) { 2048 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2049 return false; 2050 } 2051 2052 long ident = Binder.clearCallingIdentity(); 2053 try { 2054 final UserData userData; 2055 synchronized (mPackagesLock) { 2056 synchronized (mUsersLock) { 2057 userData = mUsers.get(userHandle); 2058 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2059 return false; 2060 } 2061 } 2062 if (!userData.info.isGuest()) { 2063 return false; 2064 } 2065 // We set this to a guest user that is to be removed. This is a temporary state 2066 // where we are allowed to add new Guest users, even if this one is still not 2067 // removed. This user will still show up in getUserInfo() calls. 2068 // If we don't get around to removing this Guest user, it will be purged on next 2069 // startup. 2070 userData.info.guestToRemove = true; 2071 // Mark it as disabled, so that it isn't returned any more when 2072 // profiles are queried. 2073 userData.info.flags |= UserInfo.FLAG_DISABLED; 2074 writeUserLP(userData); 2075 } 2076 } finally { 2077 Binder.restoreCallingIdentity(ident); 2078 } 2079 return true; 2080 } 2081 2082 /** 2083 * Removes a user and all data directories created for that user. This method should be called 2084 * after the user's processes have been terminated. 2085 * @param userHandle the user's id 2086 */ 2087 @Override 2088 public boolean removeUser(int userHandle) { 2089 checkManageUsersPermission("Only the system can remove users"); 2090 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2091 UserManager.DISALLOW_REMOVE_USER, false)) { 2092 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2093 return false; 2094 } 2095 2096 long ident = Binder.clearCallingIdentity(); 2097 try { 2098 final UserData userData; 2099 int currentUser = ActivityManager.getCurrentUser(); 2100 if (currentUser == userHandle) { 2101 Log.w(LOG_TAG, "Current user cannot be removed"); 2102 return false; 2103 } 2104 synchronized (mPackagesLock) { 2105 synchronized (mUsersLock) { 2106 userData = mUsers.get(userHandle); 2107 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2108 return false; 2109 } 2110 2111 // We remember deleted user IDs to prevent them from being 2112 // reused during the current boot; they can still be reused 2113 // after a reboot. 2114 mRemovingUserIds.put(userHandle, true); 2115 } 2116 2117 try { 2118 mAppOpsService.removeUser(userHandle); 2119 } catch (RemoteException e) { 2120 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2121 } 2122 // Set this to a partially created user, so that the user will be purged 2123 // on next startup, in case the runtime stops now before stopping and 2124 // removing the user completely. 2125 userData.info.partial = true; 2126 // Mark it as disabled, so that it isn't returned any more when 2127 // profiles are queried. 2128 userData.info.flags |= UserInfo.FLAG_DISABLED; 2129 writeUserLP(userData); 2130 } 2131 2132 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2133 && userData.info.isManagedProfile()) { 2134 // Send broadcast to notify system that the user removed was a 2135 // managed user. 2136 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2137 } 2138 2139 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2140 int res; 2141 try { 2142 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 2143 new IStopUserCallback.Stub() { 2144 @Override 2145 public void userStopped(int userId) { 2146 finishRemoveUser(userId); 2147 } 2148 @Override 2149 public void userStopAborted(int userId) { 2150 } 2151 }); 2152 } catch (RemoteException e) { 2153 return false; 2154 } 2155 return res == ActivityManager.USER_OP_SUCCESS; 2156 } finally { 2157 Binder.restoreCallingIdentity(ident); 2158 } 2159 } 2160 2161 void finishRemoveUser(final int userHandle) { 2162 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2163 // Let other services shutdown any activity and clean up their state before completely 2164 // wiping the user's system directory and removing from the user list 2165 long ident = Binder.clearCallingIdentity(); 2166 try { 2167 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2168 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2169 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2170 android.Manifest.permission.MANAGE_USERS, 2171 2172 new BroadcastReceiver() { 2173 @Override 2174 public void onReceive(Context context, Intent intent) { 2175 if (DBG) { 2176 Slog.i(LOG_TAG, 2177 "USER_REMOVED broadcast sent, cleaning up user data " 2178 + userHandle); 2179 } 2180 new Thread() { 2181 @Override 2182 public void run() { 2183 // Clean up any ActivityManager state 2184 LocalServices.getService(ActivityManagerInternal.class) 2185 .onUserRemoved(userHandle); 2186 removeUserState(userHandle); 2187 } 2188 }.start(); 2189 } 2190 }, 2191 2192 null, Activity.RESULT_OK, null, null); 2193 } finally { 2194 Binder.restoreCallingIdentity(ident); 2195 } 2196 } 2197 2198 private void removeUserState(final int userHandle) { 2199 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2200 // Cleanup package manager settings 2201 mPm.cleanUpUser(this, userHandle); 2202 2203 // Remove this user from the list 2204 synchronized (mUsersLock) { 2205 mUsers.remove(userHandle); 2206 mIsUserManaged.delete(userHandle); 2207 } 2208 synchronized (mRestrictionsLock) { 2209 mBaseUserRestrictions.remove(userHandle); 2210 mAppliedUserRestrictions.remove(userHandle); 2211 mCachedEffectiveUserRestrictions.remove(userHandle); 2212 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2213 } 2214 // Remove user file 2215 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2216 userFile.delete(); 2217 // Update the user list 2218 synchronized (mPackagesLock) { 2219 writeUserListLP(); 2220 } 2221 updateUserIds(); 2222 File userDir = Environment.getUserSystemDirectory(userHandle); 2223 File renamedUserDir = Environment.getUserSystemDirectory(UserHandle.USER_NULL - userHandle); 2224 if (userDir.renameTo(renamedUserDir)) { 2225 removeDirectoryRecursive(renamedUserDir); 2226 } else { 2227 removeDirectoryRecursive(userDir); 2228 } 2229 } 2230 2231 private void removeDirectoryRecursive(File parent) { 2232 if (parent.isDirectory()) { 2233 String[] files = parent.list(); 2234 for (String filename : files) { 2235 File child = new File(parent, filename); 2236 removeDirectoryRecursive(child); 2237 } 2238 } 2239 parent.delete(); 2240 } 2241 2242 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2243 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2244 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2245 Intent.FLAG_RECEIVER_FOREGROUND); 2246 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2247 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2248 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2249 } 2250 2251 @Override 2252 public Bundle getApplicationRestrictions(String packageName) { 2253 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2254 } 2255 2256 @Override 2257 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2258 if (UserHandle.getCallingUserId() != userId 2259 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2260 checkSystemOrRoot("get application restrictions for other users/apps"); 2261 } 2262 synchronized (mPackagesLock) { 2263 // Read the restrictions from XML 2264 return readApplicationRestrictionsLP(packageName, userId); 2265 } 2266 } 2267 2268 @Override 2269 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2270 int userId) { 2271 checkSystemOrRoot("set application restrictions"); 2272 synchronized (mPackagesLock) { 2273 if (restrictions == null || restrictions.isEmpty()) { 2274 cleanAppRestrictionsForPackage(packageName, userId); 2275 } else { 2276 // Write the restrictions to XML 2277 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2278 } 2279 } 2280 2281 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2282 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2283 changeIntent.setPackage(packageName); 2284 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2285 mContext.sendBroadcastAsUser(changeIntent, UserHandle.of(userId)); 2286 } 2287 2288 private int getUidForPackage(String packageName) { 2289 long ident = Binder.clearCallingIdentity(); 2290 try { 2291 return mContext.getPackageManager().getApplicationInfo(packageName, 2292 PackageManager.MATCH_UNINSTALLED_PACKAGES).uid; 2293 } catch (NameNotFoundException nnfe) { 2294 return -1; 2295 } finally { 2296 Binder.restoreCallingIdentity(ident); 2297 } 2298 } 2299 2300 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2301 AtomicFile restrictionsFile = 2302 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2303 packageToRestrictionsFileName(packageName))); 2304 return readApplicationRestrictionsLP(restrictionsFile); 2305 } 2306 2307 @VisibleForTesting 2308 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2309 final Bundle restrictions = new Bundle(); 2310 final ArrayList<String> values = new ArrayList<>(); 2311 if (!restrictionsFile.getBaseFile().exists()) { 2312 return restrictions; 2313 } 2314 2315 FileInputStream fis = null; 2316 try { 2317 fis = restrictionsFile.openRead(); 2318 XmlPullParser parser = Xml.newPullParser(); 2319 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2320 XmlUtils.nextElement(parser); 2321 if (parser.getEventType() != XmlPullParser.START_TAG) { 2322 Slog.e(LOG_TAG, "Unable to read restrictions file " 2323 + restrictionsFile.getBaseFile()); 2324 return restrictions; 2325 } 2326 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2327 readEntry(restrictions, values, parser); 2328 } 2329 } catch (IOException|XmlPullParserException e) { 2330 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2331 } finally { 2332 IoUtils.closeQuietly(fis); 2333 } 2334 return restrictions; 2335 } 2336 2337 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2338 XmlPullParser parser) throws XmlPullParserException, IOException { 2339 int type = parser.getEventType(); 2340 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2341 String key = parser.getAttributeValue(null, ATTR_KEY); 2342 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2343 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2344 if (multiple != null) { 2345 values.clear(); 2346 int count = Integer.parseInt(multiple); 2347 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2348 if (type == XmlPullParser.START_TAG 2349 && parser.getName().equals(TAG_VALUE)) { 2350 values.add(parser.nextText().trim()); 2351 count--; 2352 } 2353 } 2354 String [] valueStrings = new String[values.size()]; 2355 values.toArray(valueStrings); 2356 restrictions.putStringArray(key, valueStrings); 2357 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2358 restrictions.putBundle(key, readBundleEntry(parser, values)); 2359 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2360 final int outerDepth = parser.getDepth(); 2361 ArrayList<Bundle> bundleList = new ArrayList<>(); 2362 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2363 Bundle childBundle = readBundleEntry(parser, values); 2364 bundleList.add(childBundle); 2365 } 2366 restrictions.putParcelableArray(key, 2367 bundleList.toArray(new Bundle[bundleList.size()])); 2368 } else { 2369 String value = parser.nextText().trim(); 2370 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2371 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2372 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2373 restrictions.putInt(key, Integer.parseInt(value)); 2374 } else { 2375 restrictions.putString(key, value); 2376 } 2377 } 2378 } 2379 } 2380 2381 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2382 throws IOException, XmlPullParserException { 2383 Bundle childBundle = new Bundle(); 2384 final int outerDepth = parser.getDepth(); 2385 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2386 readEntry(childBundle, values, parser); 2387 } 2388 return childBundle; 2389 } 2390 2391 private void writeApplicationRestrictionsLP(String packageName, 2392 Bundle restrictions, int userId) { 2393 AtomicFile restrictionsFile = new AtomicFile( 2394 new File(Environment.getUserSystemDirectory(userId), 2395 packageToRestrictionsFileName(packageName))); 2396 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2397 } 2398 2399 @VisibleForTesting 2400 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2401 FileOutputStream fos = null; 2402 try { 2403 fos = restrictionsFile.startWrite(); 2404 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2405 2406 final XmlSerializer serializer = new FastXmlSerializer(); 2407 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2408 serializer.startDocument(null, true); 2409 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2410 2411 serializer.startTag(null, TAG_RESTRICTIONS); 2412 writeBundle(restrictions, serializer); 2413 serializer.endTag(null, TAG_RESTRICTIONS); 2414 2415 serializer.endDocument(); 2416 restrictionsFile.finishWrite(fos); 2417 } catch (Exception e) { 2418 restrictionsFile.failWrite(fos); 2419 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2420 } 2421 } 2422 2423 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2424 throws IOException { 2425 for (String key : restrictions.keySet()) { 2426 Object value = restrictions.get(key); 2427 serializer.startTag(null, TAG_ENTRY); 2428 serializer.attribute(null, ATTR_KEY, key); 2429 2430 if (value instanceof Boolean) { 2431 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2432 serializer.text(value.toString()); 2433 } else if (value instanceof Integer) { 2434 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2435 serializer.text(value.toString()); 2436 } else if (value == null || value instanceof String) { 2437 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2438 serializer.text(value != null ? (String) value : ""); 2439 } else if (value instanceof Bundle) { 2440 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2441 writeBundle((Bundle) value, serializer); 2442 } else if (value instanceof Parcelable[]) { 2443 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2444 Parcelable[] array = (Parcelable[]) value; 2445 for (Parcelable parcelable : array) { 2446 if (!(parcelable instanceof Bundle)) { 2447 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2448 } 2449 serializer.startTag(null, TAG_ENTRY); 2450 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2451 writeBundle((Bundle) parcelable, serializer); 2452 serializer.endTag(null, TAG_ENTRY); 2453 } 2454 } else { 2455 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2456 String[] values = (String[]) value; 2457 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2458 for (String choice : values) { 2459 serializer.startTag(null, TAG_VALUE); 2460 serializer.text(choice != null ? choice : ""); 2461 serializer.endTag(null, TAG_VALUE); 2462 } 2463 } 2464 serializer.endTag(null, TAG_ENTRY); 2465 } 2466 } 2467 2468 @Override 2469 public int getUserSerialNumber(int userHandle) { 2470 synchronized (mUsersLock) { 2471 if (!exists(userHandle)) return -1; 2472 return getUserInfoLU(userHandle).serialNumber; 2473 } 2474 } 2475 2476 @Override 2477 public int getUserHandle(int userSerialNumber) { 2478 synchronized (mUsersLock) { 2479 for (int userId : mUserIds) { 2480 UserInfo info = getUserInfoLU(userId); 2481 if (info != null && info.serialNumber == userSerialNumber) return userId; 2482 } 2483 // Not found 2484 return -1; 2485 } 2486 } 2487 2488 @Override 2489 public long getUserCreationTime(int userHandle) { 2490 int callingUserId = UserHandle.getCallingUserId(); 2491 UserInfo userInfo = null; 2492 synchronized (mUsersLock) { 2493 if (callingUserId == userHandle) { 2494 userInfo = getUserInfoLU(userHandle); 2495 } else { 2496 UserInfo parent = getProfileParentLU(userHandle); 2497 if (parent != null && parent.id == callingUserId) { 2498 userInfo = getUserInfoLU(userHandle); 2499 } 2500 } 2501 } 2502 if (userInfo == null) { 2503 throw new SecurityException("userHandle can only be the calling user or a managed " 2504 + "profile associated with this user"); 2505 } 2506 return userInfo.creationTime; 2507 } 2508 2509 /** 2510 * Caches the list of user ids in an array, adjusting the array size when necessary. 2511 */ 2512 private void updateUserIds() { 2513 int num = 0; 2514 synchronized (mUsersLock) { 2515 final int userSize = mUsers.size(); 2516 for (int i = 0; i < userSize; i++) { 2517 if (!mUsers.valueAt(i).info.partial) { 2518 num++; 2519 } 2520 } 2521 final int[] newUsers = new int[num]; 2522 int n = 0; 2523 for (int i = 0; i < userSize; i++) { 2524 if (!mUsers.valueAt(i).info.partial) { 2525 newUsers[n++] = mUsers.keyAt(i); 2526 } 2527 } 2528 mUserIds = newUsers; 2529 } 2530 } 2531 2532 /** 2533 * Prepare storage areas for given user on all mounted devices. 2534 */ 2535 private void prepareUserStorage(int userId, int userSerial, int flags) { 2536 final StorageManager storage = mContext.getSystemService(StorageManager.class); 2537 for (VolumeInfo vol : storage.getWritablePrivateVolumes()) { 2538 final String volumeUuid = vol.getFsUuid(); 2539 storage.prepareUserStorage(volumeUuid, userId, userSerial, flags); 2540 } 2541 } 2542 2543 /** 2544 * Called right before a user is started. This gives us a chance to prepare 2545 * app storage and apply any user restrictions. 2546 */ 2547 public void onBeforeStartUser(int userId) { 2548 final int userSerial = getUserSerialNumber(userId); 2549 prepareUserStorage(userId, userSerial, StorageManager.FLAG_STORAGE_DE); 2550 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_DE); 2551 2552 if (userId != UserHandle.USER_SYSTEM) { 2553 synchronized (mRestrictionsLock) { 2554 applyUserRestrictionsLR(userId); 2555 } 2556 } 2557 } 2558 2559 /** 2560 * Called right before a user is unlocked. This gives us a chance to prepare 2561 * app storage. 2562 */ 2563 public void onBeforeUnlockUser(@UserIdInt int userId) { 2564 final int userSerial = getUserSerialNumber(userId); 2565 prepareUserStorage(userId, userSerial, StorageManager.FLAG_STORAGE_CE); 2566 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_CE); 2567 } 2568 2569 /** 2570 * Make a note of the last started time of a user and do some cleanup. 2571 * @param userId the user that was just foregrounded 2572 */ 2573 public void onUserLoggedIn(@UserIdInt int userId) { 2574 UserData userData = getUserDataNoChecks(userId); 2575 if (userData == null || userData.info.partial) { 2576 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2577 return; 2578 } 2579 2580 final long now = System.currentTimeMillis(); 2581 if (now > EPOCH_PLUS_30_YEARS) { 2582 userData.info.lastLoggedInTime = now; 2583 } 2584 userData.info.lastLoggedInFingerprint = Build.FINGERPRINT; 2585 scheduleWriteUser(userData); 2586 } 2587 2588 /** 2589 * Returns the next available user id, filling in any holes in the ids. 2590 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2591 * for data and battery stats collection, or unexpected cross-talk. 2592 */ 2593 private int getNextAvailableId() { 2594 synchronized (mUsersLock) { 2595 int i = MIN_USER_ID; 2596 while (i < MAX_USER_ID) { 2597 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2598 return i; 2599 } 2600 i++; 2601 } 2602 } 2603 throw new IllegalStateException("No user id available!"); 2604 } 2605 2606 private String packageToRestrictionsFileName(String packageName) { 2607 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2608 } 2609 2610 /** 2611 * Enforce that serial number stored in user directory inode matches the 2612 * given expected value. Gracefully sets the serial number if currently 2613 * undefined. 2614 * 2615 * @throws IOException when problem extracting serial number, or serial 2616 * number is mismatched. 2617 */ 2618 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2619 final int foundSerial = getSerialNumber(file); 2620 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 2621 2622 if (foundSerial == -1) { 2623 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 2624 try { 2625 setSerialNumber(file, serialNumber); 2626 } catch (IOException e) { 2627 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 2628 } 2629 2630 } else if (foundSerial != serialNumber) { 2631 throw new IOException("Found serial number " + foundSerial 2632 + " doesn't match expected " + serialNumber); 2633 } 2634 } 2635 2636 /** 2637 * Set serial number stored in user directory inode. 2638 * 2639 * @throws IOException if serial number was already set 2640 */ 2641 private static void setSerialNumber(File file, int serialNumber) 2642 throws IOException { 2643 try { 2644 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 2645 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 2646 } catch (ErrnoException e) { 2647 throw e.rethrowAsIOException(); 2648 } 2649 } 2650 2651 /** 2652 * Return serial number stored in user directory inode. 2653 * 2654 * @return parsed serial number, or -1 if not set 2655 */ 2656 private static int getSerialNumber(File file) throws IOException { 2657 try { 2658 final byte[] buf = new byte[256]; 2659 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 2660 final String serial = new String(buf, 0, len); 2661 try { 2662 return Integer.parseInt(serial); 2663 } catch (NumberFormatException e) { 2664 throw new IOException("Bad serial number: " + serial); 2665 } 2666 } catch (ErrnoException e) { 2667 if (e.errno == OsConstants.ENODATA) { 2668 return -1; 2669 } else { 2670 throw e.rethrowAsIOException(); 2671 } 2672 } 2673 } 2674 2675 @Override 2676 public void setSeedAccountData(int userId, String accountName, String accountType, 2677 PersistableBundle accountOptions, boolean persist) { 2678 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 2679 synchronized (mPackagesLock) { 2680 final UserData userData; 2681 synchronized (mUsersLock) { 2682 userData = getUserDataLU(userId); 2683 if (userData == null) { 2684 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 2685 return; 2686 } 2687 userData.seedAccountName = accountName; 2688 userData.seedAccountType = accountType; 2689 userData.seedAccountOptions = accountOptions; 2690 userData.persistSeedData = persist; 2691 } 2692 if (persist) { 2693 writeUserLP(userData); 2694 } 2695 } 2696 } 2697 2698 @Override 2699 public String getSeedAccountName() throws RemoteException { 2700 checkManageUsersPermission("Cannot get seed account information"); 2701 synchronized (mUsersLock) { 2702 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2703 return userData.seedAccountName; 2704 } 2705 } 2706 2707 @Override 2708 public String getSeedAccountType() throws RemoteException { 2709 checkManageUsersPermission("Cannot get seed account information"); 2710 synchronized (mUsersLock) { 2711 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2712 return userData.seedAccountType; 2713 } 2714 } 2715 2716 @Override 2717 public PersistableBundle getSeedAccountOptions() throws RemoteException { 2718 checkManageUsersPermission("Cannot get seed account information"); 2719 synchronized (mUsersLock) { 2720 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2721 return userData.seedAccountOptions; 2722 } 2723 } 2724 2725 @Override 2726 public void clearSeedAccountData() throws RemoteException { 2727 checkManageUsersPermission("Cannot clear seed account information"); 2728 synchronized (mPackagesLock) { 2729 UserData userData; 2730 synchronized (mUsersLock) { 2731 userData = getUserDataLU(UserHandle.getCallingUserId()); 2732 if (userData == null) return; 2733 userData.clearSeedAccountData(); 2734 } 2735 writeUserLP(userData); 2736 } 2737 } 2738 2739 @Override 2740 public boolean someUserHasSeedAccount(String accountName, String accountType) 2741 throws RemoteException { 2742 checkManageUsersPermission("Cannot check seed account information"); 2743 synchronized (mUsersLock) { 2744 final int userSize = mUsers.size(); 2745 for (int i = 0; i < userSize; i++) { 2746 final UserData data = mUsers.valueAt(i); 2747 if (data.info.isInitialized()) continue; 2748 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 2749 continue; 2750 } 2751 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 2752 continue; 2753 } 2754 return true; 2755 } 2756 } 2757 return false; 2758 } 2759 2760 @Override 2761 public void onShellCommand(FileDescriptor in, FileDescriptor out, 2762 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 2763 (new Shell()).exec(this, in, out, err, args, resultReceiver); 2764 } 2765 2766 int onShellCommand(Shell shell, String cmd) { 2767 if (cmd == null) { 2768 return shell.handleDefaultCommands(cmd); 2769 } 2770 2771 final PrintWriter pw = shell.getOutPrintWriter(); 2772 try { 2773 switch(cmd) { 2774 case "list": 2775 return runList(pw); 2776 } 2777 } catch (RemoteException e) { 2778 pw.println("Remote exception: " + e); 2779 } 2780 return -1; 2781 } 2782 2783 private int runList(PrintWriter pw) throws RemoteException { 2784 final IActivityManager am = ActivityManagerNative.getDefault(); 2785 final List<UserInfo> users = getUsers(false); 2786 if (users == null) { 2787 pw.println("Error: couldn't get users"); 2788 return 1; 2789 } else { 2790 pw.println("Users:"); 2791 for (int i = 0; i < users.size(); i++) { 2792 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 2793 pw.println("\t" + users.get(i).toString() + running); 2794 } 2795 return 0; 2796 } 2797 } 2798 2799 @Override 2800 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2801 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2802 != PackageManager.PERMISSION_GRANTED) { 2803 pw.println("Permission Denial: can't dump UserManager from from pid=" 2804 + Binder.getCallingPid() 2805 + ", uid=" + Binder.getCallingUid() 2806 + " without permission " 2807 + android.Manifest.permission.DUMP); 2808 return; 2809 } 2810 2811 long now = System.currentTimeMillis(); 2812 StringBuilder sb = new StringBuilder(); 2813 synchronized (mPackagesLock) { 2814 synchronized (mUsersLock) { 2815 pw.println("Users:"); 2816 for (int i = 0; i < mUsers.size(); i++) { 2817 UserData userData = mUsers.valueAt(i); 2818 if (userData == null) { 2819 continue; 2820 } 2821 UserInfo userInfo = userData.info; 2822 final int userId = userInfo.id; 2823 pw.print(" "); pw.print(userInfo); 2824 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 2825 if (mRemovingUserIds.get(userId)) { 2826 pw.print(" <removing> "); 2827 } 2828 if (userInfo.partial) { 2829 pw.print(" <partial>"); 2830 } 2831 pw.println(); 2832 pw.print(" Created: "); 2833 if (userInfo.creationTime == 0) { 2834 pw.println("<unknown>"); 2835 } else { 2836 sb.setLength(0); 2837 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 2838 sb.append(" ago"); 2839 pw.println(sb); 2840 } 2841 pw.print(" Last logged in: "); 2842 if (userInfo.lastLoggedInTime == 0) { 2843 pw.println("<unknown>"); 2844 } else { 2845 sb.setLength(0); 2846 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 2847 sb.append(" ago"); 2848 pw.println(sb); 2849 } 2850 pw.print(" Last logged in fingerprint: "); 2851 pw.println(userInfo.lastLoggedInFingerprint); 2852 pw.print(" Has profile owner: "); 2853 pw.println(mIsUserManaged.get(userId)); 2854 pw.println(" Restrictions:"); 2855 synchronized (mRestrictionsLock) { 2856 UserRestrictionsUtils.dumpRestrictions( 2857 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 2858 pw.println(" Device policy local restrictions:"); 2859 UserRestrictionsUtils.dumpRestrictions( 2860 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 2861 pw.println(" Effective restrictions:"); 2862 UserRestrictionsUtils.dumpRestrictions( 2863 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 2864 } 2865 2866 if (userData.account != null) { 2867 pw.print(" Account name: " + userData.account); 2868 pw.println(); 2869 } 2870 2871 if (userData.seedAccountName != null) { 2872 pw.print(" Seed account name: " + userData.seedAccountName); 2873 pw.println(); 2874 if (userData.seedAccountType != null) { 2875 pw.print(" account type: " + userData.seedAccountType); 2876 pw.println(); 2877 } 2878 if (userData.seedAccountOptions != null) { 2879 pw.print(" account options exist"); 2880 pw.println(); 2881 } 2882 } 2883 } 2884 } 2885 pw.println(); 2886 pw.println(" Device policy global restrictions:"); 2887 synchronized (mRestrictionsLock) { 2888 UserRestrictionsUtils 2889 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 2890 } 2891 pw.println(); 2892 pw.println(" Guest restrictions:"); 2893 synchronized (mGuestRestrictions) { 2894 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 2895 } 2896 synchronized (mUsersLock) { 2897 pw.println(); 2898 pw.println(" Device managed: " + mIsDeviceManaged); 2899 } 2900 // Dump some capabilities 2901 pw.println(); 2902 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 2903 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 2904 pw.println(" All guests ephemeral: " + Resources.getSystem().getBoolean( 2905 com.android.internal.R.bool.config_guestUserEphemeral)); 2906 } 2907 } 2908 2909 final class MainHandler extends Handler { 2910 2911 @Override 2912 public void handleMessage(Message msg) { 2913 switch (msg.what) { 2914 case WRITE_USER_MSG: 2915 removeMessages(WRITE_USER_MSG, msg.obj); 2916 synchronized (mPackagesLock) { 2917 int userId = ((UserData) msg.obj).info.id; 2918 UserData userData = getUserDataNoChecks(userId); 2919 if (userData != null) { 2920 writeUserLP(userData); 2921 } 2922 } 2923 } 2924 } 2925 } 2926 2927 /** 2928 * @param userId 2929 * @return whether the user has been initialized yet 2930 */ 2931 boolean isInitialized(int userId) { 2932 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 2933 } 2934 2935 private class LocalService extends UserManagerInternal { 2936 @Override 2937 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 2938 @Nullable Bundle globalRestrictions) { 2939 UserManagerService.this.setDevicePolicyUserRestrictionsInner(userId, localRestrictions, 2940 globalRestrictions); 2941 } 2942 2943 @Override 2944 public Bundle getBaseUserRestrictions(int userId) { 2945 synchronized (mRestrictionsLock) { 2946 return mBaseUserRestrictions.get(userId); 2947 } 2948 } 2949 2950 @Override 2951 public void setBaseUserRestrictionsByDpmsForMigration( 2952 int userId, Bundle baseRestrictions) { 2953 synchronized (mRestrictionsLock) { 2954 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 2955 invalidateEffectiveUserRestrictionsLR(userId); 2956 } 2957 2958 final UserData userData = getUserDataNoChecks(userId); 2959 synchronized (mPackagesLock) { 2960 if (userData != null) { 2961 writeUserLP(userData); 2962 } else { 2963 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 2964 } 2965 } 2966 } 2967 2968 @Override 2969 public boolean getUserRestriction(int userId, String key) { 2970 return getUserRestrictions(userId).getBoolean(key); 2971 } 2972 2973 @Override 2974 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 2975 synchronized (mUserRestrictionsListeners) { 2976 mUserRestrictionsListeners.add(listener); 2977 } 2978 } 2979 2980 @Override 2981 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 2982 synchronized (mUserRestrictionsListeners) { 2983 mUserRestrictionsListeners.remove(listener); 2984 } 2985 } 2986 2987 @Override 2988 public void setDeviceManaged(boolean isManaged) { 2989 synchronized (mUsersLock) { 2990 mIsDeviceManaged = isManaged; 2991 } 2992 } 2993 2994 @Override 2995 public void setUserManaged(int userId, boolean isManaged) { 2996 synchronized (mUsersLock) { 2997 mIsUserManaged.put(userId, isManaged); 2998 } 2999 } 3000 3001 @Override 3002 public void setUserIcon(int userId, Bitmap bitmap) { 3003 long ident = Binder.clearCallingIdentity(); 3004 try { 3005 synchronized (mPackagesLock) { 3006 UserData userData = getUserDataNoChecks(userId); 3007 if (userData == null || userData.info.partial) { 3008 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 3009 return; 3010 } 3011 writeBitmapLP(userData.info, bitmap); 3012 writeUserLP(userData); 3013 } 3014 sendUserInfoChangedBroadcast(userId); 3015 } finally { 3016 Binder.restoreCallingIdentity(ident); 3017 } 3018 } 3019 3020 @Override 3021 public void setForceEphemeralUsers(boolean forceEphemeralUsers) { 3022 synchronized (mUsersLock) { 3023 mForceEphemeralUsers = forceEphemeralUsers; 3024 } 3025 } 3026 3027 @Override 3028 public void removeAllUsers() { 3029 if (UserHandle.USER_SYSTEM == ActivityManager.getCurrentUser()) { 3030 // Remove the non-system users straight away. 3031 removeNonSystemUsers(); 3032 } else { 3033 // Switch to the system user first and then remove the other users. 3034 BroadcastReceiver userSwitchedReceiver = new BroadcastReceiver() { 3035 @Override 3036 public void onReceive(Context context, Intent intent) { 3037 int userId = 3038 intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3039 if (userId != UserHandle.USER_SYSTEM) { 3040 return; 3041 } 3042 mContext.unregisterReceiver(this); 3043 removeNonSystemUsers(); 3044 } 3045 }; 3046 IntentFilter userSwitchedFilter = new IntentFilter(); 3047 userSwitchedFilter.addAction(Intent.ACTION_USER_SWITCHED); 3048 mContext.registerReceiver( 3049 userSwitchedReceiver, userSwitchedFilter, null, mHandler); 3050 3051 // Switch to the system user. 3052 ActivityManager am = 3053 (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 3054 am.switchUser(UserHandle.USER_SYSTEM); 3055 } 3056 } 3057 3058 @Override 3059 public void onEphemeralUserStop(int userId) { 3060 synchronized (mUsersLock) { 3061 UserInfo userInfo = getUserInfoLU(userId); 3062 if (userInfo != null && userInfo.isEphemeral()) { 3063 // Do not allow switching back to the ephemeral user again as the user is going 3064 // to be deleted. 3065 userInfo.flags |= UserInfo.FLAG_DISABLED; 3066 if (userInfo.isGuest()) { 3067 // Indicate that the guest will be deleted after it stops. 3068 userInfo.guestToRemove = true; 3069 } 3070 } 3071 } 3072 } 3073 3074 @Override 3075 public UserInfo createUserEvenWhenDisallowed(String name, int flags) { 3076 UserInfo user = createUserInternalUnchecked(name, flags, UserHandle.USER_NULL); 3077 // Keep this in sync with UserManager.createUser 3078 if (user != null && !user.isAdmin()) { 3079 setUserRestriction(UserManager.DISALLOW_SMS, true, user.id); 3080 setUserRestriction(UserManager.DISALLOW_OUTGOING_CALLS, true, user.id); 3081 } 3082 return user; 3083 } 3084 } 3085 3086 /* Remove all the users except of the system one. */ 3087 private void removeNonSystemUsers() { 3088 ArrayList<UserInfo> usersToRemove = new ArrayList<>(); 3089 synchronized (mUsersLock) { 3090 final int userSize = mUsers.size(); 3091 for (int i = 0; i < userSize; i++) { 3092 UserInfo ui = mUsers.valueAt(i).info; 3093 if (ui.id != UserHandle.USER_SYSTEM) { 3094 usersToRemove.add(ui); 3095 } 3096 } 3097 } 3098 for (UserInfo ui: usersToRemove) { 3099 removeUser(ui.id); 3100 } 3101 } 3102 3103 private class Shell extends ShellCommand { 3104 @Override 3105 public int onCommand(String cmd) { 3106 return onShellCommand(this, cmd); 3107 } 3108 3109 @Override 3110 public void onHelp() { 3111 final PrintWriter pw = getOutPrintWriter(); 3112 pw.println("User manager (user) commands:"); 3113 pw.println(" help"); 3114 pw.println(" Print this help text."); 3115 pw.println(""); 3116 pw.println(" list"); 3117 pw.println(" Prints all users on the system."); 3118 } 3119 } 3120 3121 private static void debug(String message) { 3122 Log.d(LOG_TAG, message + 3123 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 3124 } 3125} 3126