UserManagerService.java revision cd57599273738c30cc209894d1f87731c9defb16
1 2/* 3 * Copyright (C) 2011 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18package com.android.server.pm; 19 20import android.Manifest; 21import android.annotation.NonNull; 22import android.annotation.Nullable; 23import android.annotation.UserIdInt; 24import android.app.Activity; 25import android.app.ActivityManager; 26import android.app.ActivityManagerInternal; 27import android.app.ActivityManagerNative; 28import android.app.IActivityManager; 29import android.app.IStopUserCallback; 30import android.content.BroadcastReceiver; 31import android.content.Context; 32import android.content.Intent; 33import android.content.IntentFilter; 34import android.content.pm.PackageManager; 35import android.content.pm.PackageManager.NameNotFoundException; 36import android.content.pm.UserInfo; 37import android.content.res.Resources; 38import android.graphics.Bitmap; 39import android.os.Binder; 40import android.os.Build; 41import android.os.Bundle; 42import android.os.Debug; 43import android.os.Environment; 44import android.os.FileUtils; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.IUserManager; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 50import android.os.Parcelable; 51import android.os.PersistableBundle; 52import android.os.Process; 53import android.os.RemoteException; 54import android.os.ResultReceiver; 55import android.os.SELinux; 56import android.os.ServiceManager; 57import android.os.ShellCommand; 58import android.os.UserHandle; 59import android.os.UserManager; 60import android.os.UserManagerInternal; 61import android.os.UserManagerInternal.UserRestrictionsListener; 62import android.os.storage.StorageManager; 63import android.os.storage.VolumeInfo; 64import android.system.ErrnoException; 65import android.system.Os; 66import android.system.OsConstants; 67import android.util.AtomicFile; 68import android.util.Log; 69import android.util.Slog; 70import android.util.SparseArray; 71import android.util.SparseBooleanArray; 72import android.util.TimeUtils; 73import android.util.Xml; 74 75import com.android.internal.annotations.GuardedBy; 76import com.android.internal.annotations.VisibleForTesting; 77import com.android.internal.app.IAppOpsService; 78import com.android.internal.logging.MetricsLogger; 79import com.android.internal.util.FastXmlSerializer; 80import com.android.internal.util.Preconditions; 81import com.android.internal.util.XmlUtils; 82import com.android.internal.widget.LockPatternUtils; 83import com.android.server.LocalServices; 84 85import libcore.io.IoUtils; 86import libcore.util.Objects; 87 88import org.xmlpull.v1.XmlPullParser; 89import org.xmlpull.v1.XmlPullParserException; 90import org.xmlpull.v1.XmlSerializer; 91 92import java.io.BufferedOutputStream; 93import java.io.File; 94import java.io.FileDescriptor; 95import java.io.FileInputStream; 96import java.io.FileNotFoundException; 97import java.io.FileOutputStream; 98import java.io.IOException; 99import java.io.PrintWriter; 100import java.nio.charset.StandardCharsets; 101import java.util.ArrayList; 102import java.util.List; 103 104/** 105 * Service for {@link UserManager}. 106 * 107 * Method naming convention: 108 * <ul> 109 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 110 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 111 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 112 * </ul> 113 */ 114public class UserManagerService extends IUserManager.Stub { 115 private static final String LOG_TAG = "UserManagerService"; 116 static final boolean DBG = false; // DO NOT SUBMIT WITH TRUE 117 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 118 119 private static final String TAG_NAME = "name"; 120 private static final String TAG_ACCOUNT = "account"; 121 private static final String ATTR_FLAGS = "flags"; 122 private static final String ATTR_ICON_PATH = "icon"; 123 private static final String ATTR_ID = "id"; 124 private static final String ATTR_CREATION_TIME = "created"; 125 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 126 private static final String ATTR_LAST_LOGGED_IN_FINGERPRINT = "lastLoggedInFingerprint"; 127 private static final String ATTR_SERIAL_NO = "serialNumber"; 128 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 129 private static final String ATTR_PARTIAL = "partial"; 130 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 131 private static final String ATTR_USER_VERSION = "version"; 132 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 133 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 134 private static final String ATTR_SEED_ACCOUNT_NAME = "seedAccountName"; 135 private static final String ATTR_SEED_ACCOUNT_TYPE = "seedAccountType"; 136 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 137 private static final String TAG_USERS = "users"; 138 private static final String TAG_USER = "user"; 139 private static final String TAG_RESTRICTIONS = "restrictions"; 140 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 141 private static final String TAG_ENTRY = "entry"; 142 private static final String TAG_VALUE = "value"; 143 private static final String TAG_SEED_ACCOUNT_OPTIONS = "seedAccountOptions"; 144 private static final String ATTR_KEY = "key"; 145 private static final String ATTR_VALUE_TYPE = "type"; 146 private static final String ATTR_MULTIPLE = "m"; 147 148 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 149 private static final String ATTR_TYPE_STRING = "s"; 150 private static final String ATTR_TYPE_BOOLEAN = "b"; 151 private static final String ATTR_TYPE_INTEGER = "i"; 152 private static final String ATTR_TYPE_BUNDLE = "B"; 153 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 154 155 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 156 private static final String USER_LIST_FILENAME = "userlist.xml"; 157 private static final String USER_PHOTO_FILENAME = "photo.png"; 158 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 159 160 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 161 private static final String XML_SUFFIX = ".xml"; 162 163 private static final int MIN_USER_ID = 10; 164 // We need to keep process uid within Integer.MAX_VALUE. 165 private static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 166 167 private static final int USER_VERSION = 6; 168 169 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 170 171 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 172 // without first making sure that the rest of the framework is prepared for it. 173 private static final int MAX_MANAGED_PROFILES = 1; 174 175 static final int WRITE_USER_MSG = 1; 176 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 177 178 private static final String XATTR_SERIAL = "user.serial"; 179 180 // Tron counters 181 private static final String TRON_GUEST_CREATED = "users_guest_created"; 182 private static final String TRON_USER_CREATED = "users_user_created"; 183 184 private final Context mContext; 185 private final PackageManagerService mPm; 186 private final Object mPackagesLock; 187 // Short-term lock for internal state, when interaction/sync with PM is not required 188 private final Object mUsersLock = new Object(); 189 private final Object mRestrictionsLock = new Object(); 190 191 private final Handler mHandler; 192 193 private final File mUsersDir; 194 private final File mUserListFile; 195 196 private static final IBinder mUserRestriconToken = new Binder(); 197 198 /** 199 * User-related information that is used for persisting to flash. Only UserInfo is 200 * directly exposed to other system apps. 201 */ 202 private static class UserData { 203 // Basic user information and properties 204 UserInfo info; 205 // Account name used when there is a strong association between a user and an account 206 String account; 207 // Account information for seeding into a newly created user. This could also be 208 // used for login validation for an existing user, for updating their credentials. 209 // In the latter case, data may not need to be persisted as it is only valid for the 210 // current login session. 211 String seedAccountName; 212 String seedAccountType; 213 PersistableBundle seedAccountOptions; 214 // Whether to perist the seed account information to be available after a boot 215 boolean persistSeedData; 216 217 void clearSeedAccountData() { 218 seedAccountName = null; 219 seedAccountType = null; 220 seedAccountOptions = null; 221 persistSeedData = false; 222 } 223 } 224 225 @GuardedBy("mUsersLock") 226 private final SparseArray<UserData> mUsers = new SparseArray<>(); 227 228 /** 229 * User restrictions set via UserManager. This doesn't include restrictions set by 230 * device owner / profile owners. 231 * 232 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 233 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 234 * maybe shared between {@link #mBaseUserRestrictions} and 235 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 236 * (Otherwise we won't be able to detect what restrictions have changed in 237 * {@link #updateUserRestrictionsInternalLR}. 238 */ 239 @GuardedBy("mRestrictionsLock") 240 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 241 242 /** 243 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 244 * with device / profile owner restrictions. We'll initialize it lazily; use 245 * {@link #getEffectiveUserRestrictions} to access it. 246 * 247 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 248 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 249 * maybe shared between {@link #mBaseUserRestrictions} and 250 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 251 * (Otherwise we won't be able to detect what restrictions have changed in 252 * {@link #updateUserRestrictionsInternalLR}. 253 */ 254 @GuardedBy("mRestrictionsLock") 255 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 256 257 /** 258 * User restrictions that have already been applied in 259 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 260 * that have changed since the last 261 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 262 */ 263 @GuardedBy("mRestrictionsLock") 264 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 265 266 /** 267 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 268 * that should be applied to all users, including guests. 269 */ 270 @GuardedBy("mRestrictionsLock") 271 private Bundle mDevicePolicyGlobalUserRestrictions; 272 273 /** 274 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 275 * for each user. 276 */ 277 @GuardedBy("mRestrictionsLock") 278 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 279 280 @GuardedBy("mGuestRestrictions") 281 private final Bundle mGuestRestrictions = new Bundle(); 282 283 /** 284 * Set of user IDs being actively removed. Removed IDs linger in this set 285 * for several seconds to work around a VFS caching issue. 286 */ 287 @GuardedBy("mUsersLock") 288 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 289 290 @GuardedBy("mUsersLock") 291 private int[] mUserIds; 292 @GuardedBy("mPackagesLock") 293 private int mNextSerialNumber; 294 private int mUserVersion = 0; 295 296 private IAppOpsService mAppOpsService; 297 298 private final LocalService mLocalService; 299 300 @GuardedBy("mUsersLock") 301 private boolean mIsDeviceManaged; 302 303 @GuardedBy("mUsersLock") 304 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 305 306 @GuardedBy("mUserRestrictionsListeners") 307 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 308 new ArrayList<>(); 309 310 private final LockPatternUtils mLockPatternUtils; 311 312 /** 313 * Whether all users should be created ephemeral. 314 */ 315 @GuardedBy("mUsersLock") 316 private boolean mForceEphemeralUsers; 317 318 private static UserManagerService sInstance; 319 320 public static UserManagerService getInstance() { 321 synchronized (UserManagerService.class) { 322 return sInstance; 323 } 324 } 325 326 @VisibleForTesting 327 UserManagerService(File dataDir) { 328 this(null, null, new Object(), dataDir); 329 } 330 331 /** 332 * Called by package manager to create the service. This is closely 333 * associated with the package manager, and the given lock is the 334 * package manager's own lock. 335 */ 336 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 337 this(context, pm, packagesLock, Environment.getDataDirectory()); 338 } 339 340 private UserManagerService(Context context, PackageManagerService pm, 341 Object packagesLock, File dataDir) { 342 mContext = context; 343 mPm = pm; 344 mPackagesLock = packagesLock; 345 mHandler = new MainHandler(); 346 synchronized (mPackagesLock) { 347 mUsersDir = new File(dataDir, USER_INFO_DIR); 348 mUsersDir.mkdirs(); 349 // Make zeroth user directory, for services to migrate their files to that location 350 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 351 userZeroDir.mkdirs(); 352 FileUtils.setPermissions(mUsersDir.toString(), 353 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 354 -1, -1); 355 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 356 initDefaultGuestRestrictions(); 357 readUserListLP(); 358 sInstance = this; 359 } 360 mLocalService = new LocalService(); 361 LocalServices.addService(UserManagerInternal.class, mLocalService); 362 mLockPatternUtils = new LockPatternUtils(mContext); 363 } 364 365 void systemReady() { 366 // Prune out any partially created, partially removed and ephemeral users. 367 ArrayList<UserInfo> partials = new ArrayList<>(); 368 synchronized (mUsersLock) { 369 final int userSize = mUsers.size(); 370 for (int i = 0; i < userSize; i++) { 371 UserInfo ui = mUsers.valueAt(i).info; 372 if ((ui.partial || ui.guestToRemove || ui.isEphemeral()) && i != 0) { 373 partials.add(ui); 374 } 375 } 376 } 377 final int partialsSize = partials.size(); 378 for (int i = 0; i < partialsSize; i++) { 379 UserInfo ui = partials.get(i); 380 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 381 + " (name=" + ui.name + ")"); 382 removeUserState(ui.id); 383 } 384 385 mAppOpsService = IAppOpsService.Stub.asInterface( 386 ServiceManager.getService(Context.APP_OPS_SERVICE)); 387 388 synchronized (mRestrictionsLock) { 389 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 390 } 391 392 UserInfo currentGuestUser = findCurrentGuestUser(); 393 if (currentGuestUser != null && !hasUserRestriction( 394 UserManager.DISALLOW_CONFIG_WIFI, currentGuestUser.id)) { 395 // If a guest user currently exists, apply the DISALLOW_CONFIG_WIFI option 396 // to it, in case this guest was created in a previous version where this 397 // user restriction was not a default guest restriction. 398 setUserRestriction(UserManager.DISALLOW_CONFIG_WIFI, true, currentGuestUser.id); 399 } 400 } 401 402 @Override 403 public String getUserAccount(int userId) { 404 checkManageUserAndAcrossUsersFullPermission("get user account"); 405 synchronized (mUsersLock) { 406 return mUsers.get(userId).account; 407 } 408 } 409 410 @Override 411 public void setUserAccount(int userId, String accountName) { 412 checkManageUserAndAcrossUsersFullPermission("set user account"); 413 UserData userToUpdate = null; 414 synchronized (mPackagesLock) { 415 synchronized (mUsersLock) { 416 final UserData userData = mUsers.get(userId); 417 if (userData == null) { 418 Slog.e(LOG_TAG, "User not found for setting user account: u" + userId); 419 return; 420 } 421 String currentAccount = userData.account; 422 if (!Objects.equal(currentAccount, accountName)) { 423 userData.account = accountName; 424 userToUpdate = userData; 425 } 426 } 427 428 if (userToUpdate != null) { 429 writeUserLP(userToUpdate); 430 } 431 } 432 } 433 434 @Override 435 public UserInfo getPrimaryUser() { 436 checkManageUsersPermission("query users"); 437 synchronized (mUsersLock) { 438 final int userSize = mUsers.size(); 439 for (int i = 0; i < userSize; i++) { 440 UserInfo ui = mUsers.valueAt(i).info; 441 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 442 return ui; 443 } 444 } 445 } 446 return null; 447 } 448 449 @Override 450 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 451 checkManageUsersPermission("query users"); 452 synchronized (mUsersLock) { 453 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 454 final int userSize = mUsers.size(); 455 for (int i = 0; i < userSize; i++) { 456 UserInfo ui = mUsers.valueAt(i).info; 457 if (ui.partial) { 458 continue; 459 } 460 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 461 users.add(userWithName(ui)); 462 } 463 } 464 return users; 465 } 466 } 467 468 @Override 469 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 470 if (userId != UserHandle.getCallingUserId()) { 471 checkManageUsersPermission("getting profiles related to user " + userId); 472 } 473 final long ident = Binder.clearCallingIdentity(); 474 try { 475 synchronized (mUsersLock) { 476 return getProfilesLU(userId, enabledOnly); 477 } 478 } finally { 479 Binder.restoreCallingIdentity(ident); 480 } 481 } 482 483 /** Assume permissions already checked and caller's identity cleared */ 484 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly) { 485 UserInfo user = getUserInfoLU(userId); 486 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 487 if (user == null) { 488 // Probably a dying user 489 return users; 490 } 491 final int userSize = mUsers.size(); 492 for (int i = 0; i < userSize; i++) { 493 UserInfo profile = mUsers.valueAt(i).info; 494 if (!isProfileOf(user, profile)) { 495 continue; 496 } 497 if (enabledOnly && !profile.isEnabled()) { 498 continue; 499 } 500 if (mRemovingUserIds.get(profile.id)) { 501 continue; 502 } 503 users.add(userWithName(profile)); 504 } 505 return users; 506 } 507 508 @Override 509 public int getCredentialOwnerProfile(int userHandle) { 510 checkManageUsersPermission("get the credential owner"); 511 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 512 synchronized (mUsersLock) { 513 UserInfo profileParent = getProfileParentLU(userHandle); 514 if (profileParent != null) { 515 return profileParent.id; 516 } 517 } 518 } 519 520 return userHandle; 521 } 522 523 @Override 524 public boolean isSameProfileGroup(int userId, int otherUserId) { 525 if (userId == otherUserId) return true; 526 checkManageUsersPermission("check if in the same profile group"); 527 synchronized (mPackagesLock) { 528 return isSameProfileGroupLP(userId, otherUserId); 529 } 530 } 531 532 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 533 synchronized (mUsersLock) { 534 UserInfo userInfo = getUserInfoLU(userId); 535 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 536 return false; 537 } 538 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 539 if (otherUserInfo == null 540 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 541 return false; 542 } 543 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 544 } 545 } 546 547 @Override 548 public UserInfo getProfileParent(int userHandle) { 549 checkManageUsersPermission("get the profile parent"); 550 synchronized (mUsersLock) { 551 return getProfileParentLU(userHandle); 552 } 553 } 554 555 private UserInfo getProfileParentLU(int userHandle) { 556 UserInfo profile = getUserInfoLU(userHandle); 557 if (profile == null) { 558 return null; 559 } 560 int parentUserId = profile.profileGroupId; 561 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 562 return null; 563 } else { 564 return getUserInfoLU(parentUserId); 565 } 566 } 567 568 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 569 return user.id == profile.id || 570 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 571 && user.profileGroupId == profile.profileGroupId); 572 } 573 574 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 575 UserHandle parentHandle, boolean inQuietMode) { 576 Intent intent = new Intent(Intent.ACTION_MANAGED_PROFILE_AVAILABILITY_CHANGED); 577 intent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 578 intent.putExtra(Intent.EXTRA_USER, profileHandle); 579 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 580 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 581 mContext.sendBroadcastAsUser(intent, parentHandle); 582 } 583 584 @Override 585 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 586 checkManageUsersPermission("silence profile"); 587 boolean changed = false; 588 UserInfo profile, parent; 589 synchronized (mPackagesLock) { 590 synchronized (mUsersLock) { 591 profile = getUserInfoLU(userHandle); 592 parent = getProfileParentLU(userHandle); 593 594 } 595 if (profile == null || !profile.isManagedProfile()) { 596 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 597 } 598 if (profile.isQuietModeEnabled() != enableQuietMode) { 599 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 600 writeUserLP(getUserDataLU(profile.id)); 601 changed = true; 602 } 603 } 604 if (changed) { 605 long identity = Binder.clearCallingIdentity(); 606 try { 607 if (enableQuietMode) { 608 ActivityManagerNative.getDefault().stopUser(userHandle, /* force */true, null); 609 } else { 610 ActivityManagerNative.getDefault().startUserInBackground(userHandle); 611 } 612 } catch (RemoteException e) { 613 Slog.e(LOG_TAG, "fail to start/stop user for quiet mode", e); 614 } finally { 615 Binder.restoreCallingIdentity(identity); 616 } 617 618 broadcastProfileAvailabilityChanges(profile.getUserHandle(), parent.getUserHandle(), 619 enableQuietMode); 620 } 621 } 622 623 @Override 624 public boolean isQuietModeEnabled(int userHandle) { 625 synchronized (mPackagesLock) { 626 UserInfo info; 627 synchronized (mUsersLock) { 628 info = getUserInfoLU(userHandle); 629 } 630 if (info == null || !info.isManagedProfile()) { 631 return false; 632 } 633 return info.isQuietModeEnabled(); 634 } 635 } 636 637 @Override 638 public void setUserEnabled(int userId) { 639 checkManageUsersPermission("enable user"); 640 synchronized (mPackagesLock) { 641 UserInfo info; 642 synchronized (mUsersLock) { 643 info = getUserInfoLU(userId); 644 } 645 if (info != null && !info.isEnabled()) { 646 info.flags ^= UserInfo.FLAG_DISABLED; 647 writeUserLP(getUserDataLU(info.id)); 648 } 649 } 650 } 651 652 @Override 653 public UserInfo getUserInfo(int userId) { 654 checkManageUsersPermission("query user"); 655 synchronized (mUsersLock) { 656 return userWithName(getUserInfoLU(userId)); 657 } 658 } 659 660 /** 661 * Returns a UserInfo object with the name filled in, for Owner, or the original 662 * if the name is already set. 663 */ 664 private UserInfo userWithName(UserInfo orig) { 665 if (orig != null && orig.name == null && orig.id == UserHandle.USER_SYSTEM) { 666 UserInfo withName = new UserInfo(orig); 667 withName.name = getOwnerName(); 668 return withName; 669 } else { 670 return orig; 671 } 672 } 673 674 @Override 675 public boolean isManagedProfile(int userId) { 676 int callingUserId = UserHandle.getCallingUserId(); 677 if (callingUserId != userId && !hasManageUsersPermission()) { 678 synchronized (mPackagesLock) { 679 if (!isSameProfileGroupLP(callingUserId, userId)) { 680 throw new SecurityException( 681 "You need MANAGE_USERS permission to: check if specified user a " + 682 "managed profile outside your profile group"); 683 } 684 } 685 } 686 synchronized (mUsersLock) { 687 UserInfo userInfo = getUserInfoLU(userId); 688 return userInfo != null && userInfo.isManagedProfile(); 689 } 690 } 691 692 @Override 693 public boolean isRestricted() { 694 synchronized (mUsersLock) { 695 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 696 } 697 } 698 699 @Override 700 public boolean canHaveRestrictedProfile(int userId) { 701 checkManageUsersPermission("canHaveRestrictedProfile"); 702 synchronized (mUsersLock) { 703 final UserInfo userInfo = getUserInfoLU(userId); 704 if (userInfo == null || !userInfo.canHaveProfile()) { 705 return false; 706 } 707 if (!userInfo.isAdmin()) { 708 return false; 709 } 710 // restricted profile can be created if there is no DO set and the admin user has no PO; 711 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 712 } 713 } 714 715 /* 716 * Should be locked on mUsers before calling this. 717 */ 718 private UserInfo getUserInfoLU(int userId) { 719 final UserData userData = mUsers.get(userId); 720 // If it is partial and not in the process of being removed, return as unknown user. 721 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 722 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 723 return null; 724 } 725 return userData != null ? userData.info : null; 726 } 727 728 private UserData getUserDataLU(int userId) { 729 final UserData userData = mUsers.get(userId); 730 // If it is partial and not in the process of being removed, return as unknown user. 731 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 732 return null; 733 } 734 return userData; 735 } 736 737 /** 738 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 739 * <p>No permissions checking or any addition checks are made</p> 740 */ 741 private UserInfo getUserInfoNoChecks(int userId) { 742 synchronized (mUsersLock) { 743 final UserData userData = mUsers.get(userId); 744 return userData != null ? userData.info : null; 745 } 746 } 747 748 /** 749 * Obtains {@link #mUsersLock} and return UserData from mUsers. 750 * <p>No permissions checking or any addition checks are made</p> 751 */ 752 private UserData getUserDataNoChecks(int userId) { 753 synchronized (mUsersLock) { 754 return mUsers.get(userId); 755 } 756 } 757 758 /** Called by PackageManagerService */ 759 public boolean exists(int userId) { 760 return getUserInfoNoChecks(userId) != null; 761 } 762 763 @Override 764 public void setUserName(int userId, String name) { 765 checkManageUsersPermission("rename users"); 766 boolean changed = false; 767 synchronized (mPackagesLock) { 768 UserData userData = getUserDataNoChecks(userId); 769 if (userData == null || userData.info.partial) { 770 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 771 return; 772 } 773 if (name != null && !name.equals(userData.info.name)) { 774 userData.info.name = name; 775 writeUserLP(userData); 776 changed = true; 777 } 778 } 779 if (changed) { 780 sendUserInfoChangedBroadcast(userId); 781 } 782 } 783 784 @Override 785 public void setUserIcon(int userId, Bitmap bitmap) { 786 checkManageUsersPermission("update users"); 787 if (hasUserRestriction(UserManager.DISALLOW_SET_USER_ICON, userId)) { 788 Log.w(LOG_TAG, "Cannot set user icon. DISALLOW_SET_USER_ICON is enabled."); 789 return; 790 } 791 mLocalService.setUserIcon(userId, bitmap); 792 } 793 794 795 796 private void sendUserInfoChangedBroadcast(int userId) { 797 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 798 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 799 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 800 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 801 } 802 803 @Override 804 public ParcelFileDescriptor getUserIcon(int targetUserId) { 805 String iconPath; 806 synchronized (mPackagesLock) { 807 UserInfo targetUserInfo = getUserInfoNoChecks(targetUserId); 808 if (targetUserInfo == null || targetUserInfo.partial) { 809 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + targetUserId); 810 return null; 811 } 812 813 final int callingUserId = UserHandle.getCallingUserId(); 814 final int callingGroupId = getUserInfoNoChecks(callingUserId).profileGroupId; 815 final int targetGroupId = targetUserInfo.profileGroupId; 816 final boolean sameGroup = (callingGroupId != UserInfo.NO_PROFILE_GROUP_ID 817 && callingGroupId == targetGroupId); 818 if ((callingUserId != targetUserId) && !sameGroup) { 819 checkManageUsersPermission("get the icon of a user who is not related"); 820 } 821 822 if (targetUserInfo.iconPath == null) { 823 return null; 824 } 825 iconPath = targetUserInfo.iconPath; 826 } 827 828 try { 829 return ParcelFileDescriptor.open( 830 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 831 } catch (FileNotFoundException e) { 832 Log.e(LOG_TAG, "Couldn't find icon file", e); 833 } 834 return null; 835 } 836 837 public void makeInitialized(int userId) { 838 checkManageUsersPermission("makeInitialized"); 839 boolean scheduleWriteUser = false; 840 UserData userData; 841 synchronized (mUsersLock) { 842 userData = mUsers.get(userId); 843 if (userData == null || userData.info.partial) { 844 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 845 return; 846 } 847 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 848 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 849 scheduleWriteUser = true; 850 } 851 } 852 if (scheduleWriteUser) { 853 scheduleWriteUser(userData); 854 } 855 } 856 857 /** 858 * If default guest restrictions haven't been initialized yet, add the basic 859 * restrictions. 860 */ 861 private void initDefaultGuestRestrictions() { 862 synchronized (mGuestRestrictions) { 863 if (mGuestRestrictions.isEmpty()) { 864 mGuestRestrictions.putBoolean(UserManager.DISALLOW_CONFIG_WIFI, true); 865 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 866 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 867 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 868 } 869 } 870 } 871 872 @Override 873 public Bundle getDefaultGuestRestrictions() { 874 checkManageUsersPermission("getDefaultGuestRestrictions"); 875 synchronized (mGuestRestrictions) { 876 return new Bundle(mGuestRestrictions); 877 } 878 } 879 880 @Override 881 public void setDefaultGuestRestrictions(Bundle restrictions) { 882 checkManageUsersPermission("setDefaultGuestRestrictions"); 883 synchronized (mGuestRestrictions) { 884 mGuestRestrictions.clear(); 885 mGuestRestrictions.putAll(restrictions); 886 } 887 synchronized (mPackagesLock) { 888 writeUserListLP(); 889 } 890 } 891 892 /** 893 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 894 */ 895 void setDevicePolicyUserRestrictionsInner(int userId, @NonNull Bundle local, 896 @Nullable Bundle global) { 897 Preconditions.checkNotNull(local); 898 boolean globalChanged = false; 899 boolean localChanged; 900 synchronized (mRestrictionsLock) { 901 if (global != null) { 902 // Update global. 903 globalChanged = !UserRestrictionsUtils.areEqual( 904 mDevicePolicyGlobalUserRestrictions, global); 905 if (globalChanged) { 906 mDevicePolicyGlobalUserRestrictions = global; 907 } 908 } 909 { 910 // Update local. 911 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 912 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 913 if (localChanged) { 914 mDevicePolicyLocalUserRestrictions.put(userId, local); 915 } 916 } 917 } 918 if (DBG) { 919 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 920 + " global=" + global + (globalChanged ? " (changed)" : "") 921 + " local=" + local + (localChanged ? " (changed)" : "") 922 ); 923 } 924 // Don't call them within the mRestrictionsLock. 925 synchronized (mPackagesLock) { 926 if (localChanged) { 927 writeUserLP(getUserDataNoChecks(userId)); 928 } 929 if (globalChanged) { 930 writeUserListLP(); 931 } 932 } 933 934 synchronized (mRestrictionsLock) { 935 if (globalChanged) { 936 applyUserRestrictionsForAllUsersLR(); 937 } else if (localChanged) { 938 applyUserRestrictionsLR(userId); 939 } 940 } 941 } 942 943 @GuardedBy("mRestrictionsLock") 944 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 945 final Bundle baseRestrictions = 946 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 947 final Bundle global = mDevicePolicyGlobalUserRestrictions; 948 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 949 950 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 951 // Common case first. 952 return baseRestrictions; 953 } 954 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 955 UserRestrictionsUtils.merge(effective, global); 956 UserRestrictionsUtils.merge(effective, local); 957 958 return effective; 959 } 960 961 @GuardedBy("mRestrictionsLock") 962 private void invalidateEffectiveUserRestrictionsLR(int userId) { 963 if (DBG) { 964 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 965 } 966 mCachedEffectiveUserRestrictions.remove(userId); 967 } 968 969 private Bundle getEffectiveUserRestrictions(int userId) { 970 synchronized (mRestrictionsLock) { 971 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 972 if (restrictions == null) { 973 restrictions = computeEffectiveUserRestrictionsLR(userId); 974 mCachedEffectiveUserRestrictions.put(userId, restrictions); 975 } 976 return restrictions; 977 } 978 } 979 980 /** @return a specific user restriction that's in effect currently. */ 981 @Override 982 public boolean hasUserRestriction(String restrictionKey, int userId) { 983 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 984 return false; 985 } 986 Bundle restrictions = getEffectiveUserRestrictions(userId); 987 return restrictions != null && restrictions.getBoolean(restrictionKey); 988 } 989 990 /** 991 * @return UserRestrictions that are in effect currently. This always returns a new 992 * {@link Bundle}. 993 */ 994 @Override 995 public Bundle getUserRestrictions(int userId) { 996 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 997 } 998 999 @Override 1000 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 1001 checkManageUsersPermission("hasBaseUserRestriction"); 1002 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1003 return false; 1004 } 1005 synchronized (mRestrictionsLock) { 1006 Bundle bundle = mBaseUserRestrictions.get(userId); 1007 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 1008 } 1009 } 1010 1011 @Override 1012 public void setUserRestriction(String key, boolean value, int userId) { 1013 checkManageUsersPermission("setUserRestriction"); 1014 if (!UserRestrictionsUtils.isValidRestriction(key)) { 1015 return; 1016 } 1017 synchronized (mRestrictionsLock) { 1018 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 1019 // a copy. 1020 final Bundle newRestrictions = UserRestrictionsUtils.clone( 1021 mBaseUserRestrictions.get(userId)); 1022 newRestrictions.putBoolean(key, value); 1023 1024 updateUserRestrictionsInternalLR(newRestrictions, userId); 1025 } 1026 } 1027 1028 /** 1029 * Optionally updating user restrictions, calculate the effective user restrictions and also 1030 * propagate to other services and system settings. 1031 * 1032 * @param newRestrictions User restrictions to set. 1033 * If null, will not update user restrictions and only does the propagation. 1034 * @param userId target user ID. 1035 */ 1036 @GuardedBy("mRestrictionsLock") 1037 private void updateUserRestrictionsInternalLR( 1038 @Nullable Bundle newRestrictions, int userId) { 1039 1040 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 1041 mAppliedUserRestrictions.get(userId)); 1042 1043 // Update base restrictions. 1044 if (newRestrictions != null) { 1045 // If newRestrictions == the current one, it's probably a bug. 1046 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 1047 1048 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 1049 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 1050 != newRestrictions); 1051 1052 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 1053 mBaseUserRestrictions.put(userId, newRestrictions); 1054 scheduleWriteUser(getUserDataNoChecks(userId)); 1055 } 1056 } 1057 1058 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 1059 1060 mCachedEffectiveUserRestrictions.put(userId, effective); 1061 1062 // Apply the new restrictions. 1063 if (DBG) { 1064 debug("Applying user restrictions: userId=" + userId 1065 + " new=" + effective + " prev=" + prevAppliedRestrictions); 1066 } 1067 1068 if (mAppOpsService != null) { // We skip it until system-ready. 1069 final long token = Binder.clearCallingIdentity(); 1070 try { 1071 mAppOpsService.setUserRestrictions(effective, mUserRestriconToken, userId); 1072 } catch (RemoteException e) { 1073 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1074 } finally { 1075 Binder.restoreCallingIdentity(token); 1076 } 1077 } 1078 1079 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1080 1081 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1082 } 1083 1084 private void propagateUserRestrictionsLR(final int userId, 1085 Bundle newRestrictions, Bundle prevRestrictions) { 1086 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1087 // actually, but we still need some kind of synchronization otherwise we might end up 1088 // calling listeners out-of-order, thus "LR". 1089 1090 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1091 return; 1092 } 1093 1094 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1095 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1096 1097 mHandler.post(new Runnable() { 1098 @Override 1099 public void run() { 1100 UserRestrictionsUtils.applyUserRestrictions( 1101 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1102 1103 final UserRestrictionsListener[] listeners; 1104 synchronized (mUserRestrictionsListeners) { 1105 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1106 mUserRestrictionsListeners.toArray(listeners); 1107 } 1108 for (int i = 0; i < listeners.length; i++) { 1109 listeners[i].onUserRestrictionsChanged(userId, 1110 newRestrictionsFinal, prevRestrictionsFinal); 1111 } 1112 } 1113 }); 1114 } 1115 1116 // Package private for the inner class. 1117 void applyUserRestrictionsLR(int userId) { 1118 updateUserRestrictionsInternalLR(null, userId); 1119 } 1120 1121 @GuardedBy("mRestrictionsLock") 1122 // Package private for the inner class. 1123 void applyUserRestrictionsForAllUsersLR() { 1124 if (DBG) { 1125 debug("applyUserRestrictionsForAllUsersLR"); 1126 } 1127 // First, invalidate all cached values. 1128 mCachedEffectiveUserRestrictions.clear(); 1129 1130 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 1131 // it on a handler. 1132 final Runnable r = new Runnable() { 1133 @Override 1134 public void run() { 1135 // Then get the list of running users. 1136 final int[] runningUsers; 1137 try { 1138 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 1139 } catch (RemoteException e) { 1140 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 1141 return; 1142 } 1143 // Then re-calculate the effective restrictions and apply, only for running users. 1144 // It's okay if a new user has started after the getRunningUserIds() call, 1145 // because we'll do the same thing (re-calculate the restrictions and apply) 1146 // when we start a user. 1147 synchronized (mRestrictionsLock) { 1148 for (int i = 0; i < runningUsers.length; i++) { 1149 applyUserRestrictionsLR(runningUsers[i]); 1150 } 1151 } 1152 } 1153 }; 1154 mHandler.post(r); 1155 } 1156 1157 /** 1158 * Check if we've hit the limit of how many users can be created. 1159 */ 1160 private boolean isUserLimitReached() { 1161 int count; 1162 synchronized (mUsersLock) { 1163 count = getAliveUsersExcludingGuestsCountLU(); 1164 } 1165 return count >= UserManager.getMaxSupportedUsers(); 1166 } 1167 1168 @Override 1169 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1170 checkManageUsersPermission("check if more managed profiles can be added."); 1171 if (ActivityManager.isLowRamDeviceStatic()) { 1172 return false; 1173 } 1174 if (!mContext.getPackageManager().hasSystemFeature( 1175 PackageManager.FEATURE_MANAGED_USERS)) { 1176 return false; 1177 } 1178 // Limit number of managed profiles that can be created 1179 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1180 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1181 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1182 return false; 1183 } 1184 synchronized(mUsersLock) { 1185 UserInfo userInfo = getUserInfoLU(userId); 1186 if (!userInfo.canHaveProfile()) { 1187 return false; 1188 } 1189 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1190 - profilesRemovedCount; 1191 // We allow creating a managed profile in the special case where there is only one user. 1192 return usersCountAfterRemoving == 1 1193 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1194 } 1195 } 1196 1197 private int getAliveUsersExcludingGuestsCountLU() { 1198 int aliveUserCount = 0; 1199 final int totalUserCount = mUsers.size(); 1200 // Skip over users being removed 1201 for (int i = 0; i < totalUserCount; i++) { 1202 UserInfo user = mUsers.valueAt(i).info; 1203 if (!mRemovingUserIds.get(user.id) 1204 && !user.isGuest() && !user.partial) { 1205 aliveUserCount++; 1206 } 1207 } 1208 return aliveUserCount; 1209 } 1210 1211 /** 1212 * Enforces that only the system UID or root's UID or apps that have the 1213 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1214 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1215 * permissions can make certain calls to the UserManager. 1216 * 1217 * @param message used as message if SecurityException is thrown 1218 * @throws SecurityException if the caller does not have enough privilege. 1219 */ 1220 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1221 final int uid = Binder.getCallingUid(); 1222 if (uid != Process.SYSTEM_UID && uid != 0 1223 && ActivityManager.checkComponentPermission( 1224 Manifest.permission.MANAGE_USERS, 1225 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1226 && ActivityManager.checkComponentPermission( 1227 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1228 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1229 throw new SecurityException( 1230 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1231 + message); 1232 } 1233 } 1234 1235 /** 1236 * Enforces that only the system UID or root's UID or apps that have the 1237 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1238 * permission can make certain calls to the UserManager. 1239 * 1240 * @param message used as message if SecurityException is thrown 1241 * @throws SecurityException if the caller is not system or root 1242 * @see #hasManageUsersPermission() 1243 */ 1244 private static final void checkManageUsersPermission(String message) { 1245 if (!hasManageUsersPermission()) { 1246 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1247 } 1248 } 1249 1250 /** 1251 * @return whether the calling UID is system UID or root's UID or the calling app has the 1252 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS}. 1253 */ 1254 private static final boolean hasManageUsersPermission() { 1255 final int callingUid = Binder.getCallingUid(); 1256 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1257 || callingUid == Process.ROOT_UID 1258 || ActivityManager.checkComponentPermission( 1259 android.Manifest.permission.MANAGE_USERS, 1260 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1261 } 1262 1263 /** 1264 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1265 * UserManager. 1266 * 1267 * @param message used as message if SecurityException is thrown 1268 * @throws SecurityException if the caller is not system or root 1269 */ 1270 private static void checkSystemOrRoot(String message) { 1271 final int uid = Binder.getCallingUid(); 1272 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1273 throw new SecurityException("Only system may: " + message); 1274 } 1275 } 1276 1277 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1278 try { 1279 File dir = new File(mUsersDir, Integer.toString(info.id)); 1280 File file = new File(dir, USER_PHOTO_FILENAME); 1281 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1282 if (!dir.exists()) { 1283 dir.mkdir(); 1284 FileUtils.setPermissions( 1285 dir.getPath(), 1286 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1287 -1, -1); 1288 } 1289 FileOutputStream os; 1290 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1291 && tmp.renameTo(file) && SELinux.restorecon(file)) { 1292 info.iconPath = file.getAbsolutePath(); 1293 } 1294 try { 1295 os.close(); 1296 } catch (IOException ioe) { 1297 // What the ... ! 1298 } 1299 tmp.delete(); 1300 } catch (FileNotFoundException e) { 1301 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1302 } 1303 } 1304 1305 /** 1306 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1307 * cache it elsewhere. 1308 * @return the array of user ids. 1309 */ 1310 public int[] getUserIds() { 1311 synchronized (mUsersLock) { 1312 return mUserIds; 1313 } 1314 } 1315 1316 private void readUserListLP() { 1317 if (!mUserListFile.exists()) { 1318 fallbackToSingleUserLP(); 1319 return; 1320 } 1321 FileInputStream fis = null; 1322 AtomicFile userListFile = new AtomicFile(mUserListFile); 1323 try { 1324 fis = userListFile.openRead(); 1325 XmlPullParser parser = Xml.newPullParser(); 1326 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1327 int type; 1328 while ((type = parser.next()) != XmlPullParser.START_TAG 1329 && type != XmlPullParser.END_DOCUMENT) { 1330 // Skip 1331 } 1332 1333 if (type != XmlPullParser.START_TAG) { 1334 Slog.e(LOG_TAG, "Unable to read user list"); 1335 fallbackToSingleUserLP(); 1336 return; 1337 } 1338 1339 mNextSerialNumber = -1; 1340 if (parser.getName().equals(TAG_USERS)) { 1341 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1342 if (lastSerialNumber != null) { 1343 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1344 } 1345 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1346 if (versionNumber != null) { 1347 mUserVersion = Integer.parseInt(versionNumber); 1348 } 1349 } 1350 1351 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1352 1353 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1354 if (type == XmlPullParser.START_TAG) { 1355 final String name = parser.getName(); 1356 if (name.equals(TAG_USER)) { 1357 String id = parser.getAttributeValue(null, ATTR_ID); 1358 1359 UserData userData = readUserLP(Integer.parseInt(id)); 1360 1361 if (userData != null) { 1362 synchronized (mUsersLock) { 1363 mUsers.put(userData.info.id, userData); 1364 if (mNextSerialNumber < 0 1365 || mNextSerialNumber <= userData.info.id) { 1366 mNextSerialNumber = userData.info.id + 1; 1367 } 1368 } 1369 } 1370 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1371 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1372 && type != XmlPullParser.END_TAG) { 1373 if (type == XmlPullParser.START_TAG) { 1374 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1375 synchronized (mGuestRestrictions) { 1376 UserRestrictionsUtils 1377 .readRestrictions(parser, mGuestRestrictions); 1378 } 1379 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1380 ) { 1381 UserRestrictionsUtils.readRestrictions(parser, 1382 newDevicePolicyGlobalUserRestrictions); 1383 } 1384 break; 1385 } 1386 } 1387 } 1388 } 1389 } 1390 synchronized (mRestrictionsLock) { 1391 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1392 } 1393 updateUserIds(); 1394 upgradeIfNecessaryLP(); 1395 } catch (IOException | XmlPullParserException e) { 1396 fallbackToSingleUserLP(); 1397 } finally { 1398 IoUtils.closeQuietly(fis); 1399 } 1400 } 1401 1402 /** 1403 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1404 */ 1405 private void upgradeIfNecessaryLP() { 1406 final int originalVersion = mUserVersion; 1407 int userVersion = mUserVersion; 1408 if (userVersion < 1) { 1409 // Assign a proper name for the owner, if not initialized correctly before 1410 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1411 if ("Primary".equals(userData.info.name)) { 1412 userData.info.name = 1413 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1414 scheduleWriteUser(userData); 1415 } 1416 userVersion = 1; 1417 } 1418 1419 if (userVersion < 2) { 1420 // Owner should be marked as initialized 1421 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1422 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1423 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1424 scheduleWriteUser(userData); 1425 } 1426 userVersion = 2; 1427 } 1428 1429 1430 if (userVersion < 4) { 1431 userVersion = 4; 1432 } 1433 1434 if (userVersion < 5) { 1435 initDefaultGuestRestrictions(); 1436 userVersion = 5; 1437 } 1438 1439 if (userVersion < 6) { 1440 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1441 synchronized (mUsersLock) { 1442 for (int i = 0; i < mUsers.size(); i++) { 1443 UserData userData = mUsers.valueAt(i); 1444 // In non-split mode, only user 0 can have restricted profiles 1445 if (!splitSystemUser && userData.info.isRestricted() 1446 && (userData.info.restrictedProfileParentId 1447 == UserInfo.NO_PROFILE_GROUP_ID)) { 1448 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1449 scheduleWriteUser(userData); 1450 } 1451 } 1452 } 1453 userVersion = 6; 1454 } 1455 1456 if (userVersion < USER_VERSION) { 1457 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1458 + USER_VERSION); 1459 } else { 1460 mUserVersion = userVersion; 1461 1462 if (originalVersion < mUserVersion) { 1463 writeUserListLP(); 1464 } 1465 } 1466 } 1467 1468 private void fallbackToSingleUserLP() { 1469 int flags = UserInfo.FLAG_INITIALIZED; 1470 // In split system user mode, the admin and primary flags are assigned to the first human 1471 // user. 1472 if (!UserManager.isSplitSystemUser()) { 1473 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1474 } 1475 // Create the system user 1476 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, null, null, flags); 1477 UserData userData = new UserData(); 1478 userData.info = system; 1479 synchronized (mUsersLock) { 1480 mUsers.put(system.id, userData); 1481 } 1482 mNextSerialNumber = MIN_USER_ID; 1483 mUserVersion = USER_VERSION; 1484 1485 Bundle restrictions = new Bundle(); 1486 synchronized (mRestrictionsLock) { 1487 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1488 } 1489 1490 updateUserIds(); 1491 initDefaultGuestRestrictions(); 1492 1493 writeUserLP(userData); 1494 writeUserListLP(); 1495 } 1496 1497 private String getOwnerName() { 1498 return mContext.getResources().getString(com.android.internal.R.string.owner_name); 1499 } 1500 1501 private void scheduleWriteUser(UserData UserData) { 1502 if (DBG) { 1503 debug("scheduleWriteUser"); 1504 } 1505 // No need to wrap it within a lock -- worst case, we'll just post the same message 1506 // twice. 1507 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1508 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1509 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1510 } 1511 } 1512 1513 /* 1514 * Writes the user file in this format: 1515 * 1516 * <user flags="20039023" id="0"> 1517 * <name>Primary</name> 1518 * </user> 1519 */ 1520 private void writeUserLP(UserData userData) { 1521 if (DBG) { 1522 debug("writeUserLP " + userData); 1523 } 1524 FileOutputStream fos = null; 1525 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1526 try { 1527 fos = userFile.startWrite(); 1528 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1529 1530 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1531 final XmlSerializer serializer = new FastXmlSerializer(); 1532 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1533 serializer.startDocument(null, true); 1534 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1535 1536 final UserInfo userInfo = userData.info; 1537 serializer.startTag(null, TAG_USER); 1538 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1539 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1540 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1541 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1542 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1543 Long.toString(userInfo.lastLoggedInTime)); 1544 if (userInfo.lastLoggedInFingerprint != null) { 1545 serializer.attribute(null, ATTR_LAST_LOGGED_IN_FINGERPRINT, 1546 userInfo.lastLoggedInFingerprint); 1547 } 1548 if (userInfo.iconPath != null) { 1549 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1550 } 1551 if (userInfo.partial) { 1552 serializer.attribute(null, ATTR_PARTIAL, "true"); 1553 } 1554 if (userInfo.guestToRemove) { 1555 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1556 } 1557 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1558 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1559 Integer.toString(userInfo.profileGroupId)); 1560 } 1561 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1562 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1563 Integer.toString(userInfo.restrictedProfileParentId)); 1564 } 1565 // Write seed data 1566 if (userData.persistSeedData) { 1567 if (userData.seedAccountName != null) { 1568 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 1569 } 1570 if (userData.seedAccountType != null) { 1571 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 1572 } 1573 } 1574 if (userInfo.name != null) { 1575 serializer.startTag(null, TAG_NAME); 1576 serializer.text(userInfo.name); 1577 serializer.endTag(null, TAG_NAME); 1578 } 1579 synchronized (mRestrictionsLock) { 1580 UserRestrictionsUtils.writeRestrictions(serializer, 1581 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1582 UserRestrictionsUtils.writeRestrictions(serializer, 1583 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1584 TAG_DEVICE_POLICY_RESTRICTIONS); 1585 } 1586 1587 if (userData.account != null) { 1588 serializer.startTag(null, TAG_ACCOUNT); 1589 serializer.text(userData.account); 1590 serializer.endTag(null, TAG_ACCOUNT); 1591 } 1592 1593 if (userData.persistSeedData && userData.seedAccountOptions != null) { 1594 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1595 userData.seedAccountOptions.saveToXml(serializer); 1596 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1597 } 1598 serializer.endTag(null, TAG_USER); 1599 1600 serializer.endDocument(); 1601 userFile.finishWrite(fos); 1602 } catch (Exception ioe) { 1603 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id, ioe); 1604 userFile.failWrite(fos); 1605 } 1606 } 1607 1608 /* 1609 * Writes the user list file in this format: 1610 * 1611 * <users nextSerialNumber="3"> 1612 * <user id="0"></user> 1613 * <user id="2"></user> 1614 * </users> 1615 */ 1616 private void writeUserListLP() { 1617 if (DBG) { 1618 debug("writeUserList"); 1619 } 1620 FileOutputStream fos = null; 1621 AtomicFile userListFile = new AtomicFile(mUserListFile); 1622 try { 1623 fos = userListFile.startWrite(); 1624 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1625 1626 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1627 final XmlSerializer serializer = new FastXmlSerializer(); 1628 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1629 serializer.startDocument(null, true); 1630 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1631 1632 serializer.startTag(null, TAG_USERS); 1633 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1634 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1635 1636 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1637 synchronized (mGuestRestrictions) { 1638 UserRestrictionsUtils 1639 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1640 } 1641 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1642 synchronized (mRestrictionsLock) { 1643 UserRestrictionsUtils.writeRestrictions(serializer, 1644 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1645 } 1646 int[] userIdsToWrite; 1647 synchronized (mUsersLock) { 1648 userIdsToWrite = new int[mUsers.size()]; 1649 for (int i = 0; i < userIdsToWrite.length; i++) { 1650 UserInfo user = mUsers.valueAt(i).info; 1651 userIdsToWrite[i] = user.id; 1652 } 1653 } 1654 for (int id : userIdsToWrite) { 1655 serializer.startTag(null, TAG_USER); 1656 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1657 serializer.endTag(null, TAG_USER); 1658 } 1659 1660 serializer.endTag(null, TAG_USERS); 1661 1662 serializer.endDocument(); 1663 userListFile.finishWrite(fos); 1664 } catch (Exception e) { 1665 userListFile.failWrite(fos); 1666 Slog.e(LOG_TAG, "Error writing user list"); 1667 } 1668 } 1669 1670 private UserData readUserLP(int id) { 1671 int flags = 0; 1672 int serialNumber = id; 1673 String name = null; 1674 String account = null; 1675 String iconPath = null; 1676 long creationTime = 0L; 1677 long lastLoggedInTime = 0L; 1678 String lastLoggedInFingerprint = null; 1679 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 1680 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 1681 boolean partial = false; 1682 boolean guestToRemove = false; 1683 boolean persistSeedData = false; 1684 String seedAccountName = null; 1685 String seedAccountType = null; 1686 PersistableBundle seedAccountOptions = null; 1687 Bundle baseRestrictions = new Bundle(); 1688 Bundle localRestrictions = new Bundle(); 1689 1690 FileInputStream fis = null; 1691 try { 1692 AtomicFile userFile = 1693 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 1694 fis = userFile.openRead(); 1695 XmlPullParser parser = Xml.newPullParser(); 1696 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1697 int type; 1698 while ((type = parser.next()) != XmlPullParser.START_TAG 1699 && type != XmlPullParser.END_DOCUMENT) { 1700 // Skip 1701 } 1702 1703 if (type != XmlPullParser.START_TAG) { 1704 Slog.e(LOG_TAG, "Unable to read user " + id); 1705 return null; 1706 } 1707 1708 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 1709 int storedId = readIntAttribute(parser, ATTR_ID, -1); 1710 if (storedId != id) { 1711 Slog.e(LOG_TAG, "User id does not match the file name"); 1712 return null; 1713 } 1714 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 1715 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 1716 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 1717 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 1718 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 1719 lastLoggedInFingerprint = parser.getAttributeValue(null, 1720 ATTR_LAST_LOGGED_IN_FINGERPRINT); 1721 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 1722 UserInfo.NO_PROFILE_GROUP_ID); 1723 restrictedProfileParentId = readIntAttribute(parser, 1724 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 1725 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 1726 if ("true".equals(valueString)) { 1727 partial = true; 1728 } 1729 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 1730 if ("true".equals(valueString)) { 1731 guestToRemove = true; 1732 } 1733 1734 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 1735 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 1736 if (seedAccountName != null || seedAccountType != null) { 1737 persistSeedData = true; 1738 } 1739 1740 int outerDepth = parser.getDepth(); 1741 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1742 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1743 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1744 continue; 1745 } 1746 String tag = parser.getName(); 1747 if (TAG_NAME.equals(tag)) { 1748 type = parser.next(); 1749 if (type == XmlPullParser.TEXT) { 1750 name = parser.getText(); 1751 } 1752 } else if (TAG_RESTRICTIONS.equals(tag)) { 1753 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 1754 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 1755 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 1756 } else if (TAG_ACCOUNT.equals(tag)) { 1757 type = parser.next(); 1758 if (type == XmlPullParser.TEXT) { 1759 account = parser.getText(); 1760 } 1761 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 1762 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 1763 persistSeedData = true; 1764 } 1765 } 1766 } 1767 1768 // Create the UserInfo object that gets passed around 1769 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 1770 userInfo.serialNumber = serialNumber; 1771 userInfo.creationTime = creationTime; 1772 userInfo.lastLoggedInTime = lastLoggedInTime; 1773 userInfo.lastLoggedInFingerprint = lastLoggedInFingerprint; 1774 userInfo.partial = partial; 1775 userInfo.guestToRemove = guestToRemove; 1776 userInfo.profileGroupId = profileGroupId; 1777 userInfo.restrictedProfileParentId = restrictedProfileParentId; 1778 1779 // Create the UserData object that's internal to this class 1780 UserData userData = new UserData(); 1781 userData.info = userInfo; 1782 userData.account = account; 1783 userData.seedAccountName = seedAccountName; 1784 userData.seedAccountType = seedAccountType; 1785 userData.persistSeedData = persistSeedData; 1786 userData.seedAccountOptions = seedAccountOptions; 1787 1788 synchronized (mRestrictionsLock) { 1789 mBaseUserRestrictions.put(id, baseRestrictions); 1790 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 1791 } 1792 return userData; 1793 } catch (IOException ioe) { 1794 } catch (XmlPullParserException pe) { 1795 } finally { 1796 if (fis != null) { 1797 try { 1798 fis.close(); 1799 } catch (IOException e) { 1800 } 1801 } 1802 } 1803 return null; 1804 } 1805 1806 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1807 String valueString = parser.getAttributeValue(null, attr); 1808 if (valueString == null) return defaultValue; 1809 try { 1810 return Integer.parseInt(valueString); 1811 } catch (NumberFormatException nfe) { 1812 return defaultValue; 1813 } 1814 } 1815 1816 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1817 String valueString = parser.getAttributeValue(null, attr); 1818 if (valueString == null) return defaultValue; 1819 try { 1820 return Long.parseLong(valueString); 1821 } catch (NumberFormatException nfe) { 1822 return defaultValue; 1823 } 1824 } 1825 1826 /** 1827 * Removes the app restrictions file for a specific package and user id, if it exists. 1828 */ 1829 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1830 synchronized (mPackagesLock) { 1831 File dir = Environment.getUserSystemDirectory(userId); 1832 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1833 if (resFile.exists()) { 1834 resFile.delete(); 1835 } 1836 } 1837 } 1838 1839 @Override 1840 public UserInfo createProfileForUser(String name, int flags, int userId) { 1841 checkManageUsersPermission("Only the system can create users"); 1842 return createUserInternal(name, flags, userId); 1843 } 1844 1845 @Override 1846 public UserInfo createUser(String name, int flags) { 1847 checkManageUsersPermission("Only the system can create users"); 1848 return createUserInternal(name, flags, UserHandle.USER_NULL); 1849 } 1850 1851 private UserInfo createUserInternal(String name, int flags, int parentId) { 1852 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 1853 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1854 return null; 1855 } 1856 return createUserInternalUnchecked(name, flags, parentId); 1857 } 1858 1859 private UserInfo createUserInternalUnchecked(String name, int flags, int parentId) { 1860 if (ActivityManager.isLowRamDeviceStatic()) { 1861 return null; 1862 } 1863 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1864 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 1865 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 1866 final long ident = Binder.clearCallingIdentity(); 1867 UserInfo userInfo; 1868 UserData userData; 1869 final int userId; 1870 try { 1871 synchronized (mPackagesLock) { 1872 UserData parent = null; 1873 if (parentId != UserHandle.USER_NULL) { 1874 synchronized (mUsersLock) { 1875 parent = getUserDataLU(parentId); 1876 } 1877 if (parent == null) return null; 1878 } 1879 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 1880 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 1881 return null; 1882 } 1883 if (!isGuest && !isManagedProfile && isUserLimitReached()) { 1884 // If we're not adding a guest user or a managed profile and the limit has 1885 // been reached, cannot add a user. 1886 return null; 1887 } 1888 // If we're adding a guest and there already exists one, bail. 1889 if (isGuest && findCurrentGuestUser() != null) { 1890 return null; 1891 } 1892 // In legacy mode, restricted profile's parent can only be the owner user 1893 if (isRestricted && !UserManager.isSplitSystemUser() 1894 && (parentId != UserHandle.USER_SYSTEM)) { 1895 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 1896 return null; 1897 } 1898 if (isRestricted && UserManager.isSplitSystemUser()) { 1899 if (parent == null) { 1900 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 1901 + "specified"); 1902 return null; 1903 } 1904 if (!parent.info.canHaveProfile()) { 1905 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 1906 + "created for the specified parent user id " + parentId); 1907 return null; 1908 } 1909 } 1910 if (!UserManager.isSplitSystemUser() && (flags & UserInfo.FLAG_EPHEMERAL) != 0) { 1911 Log.e(LOG_TAG, 1912 "Ephemeral users are supported on split-system-user systems only."); 1913 return null; 1914 } 1915 // In split system user mode, we assign the first human user the primary flag. 1916 // And if there is no device owner, we also assign the admin flag to primary user. 1917 if (UserManager.isSplitSystemUser() 1918 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 1919 flags |= UserInfo.FLAG_PRIMARY; 1920 synchronized (mUsersLock) { 1921 if (!mIsDeviceManaged) { 1922 flags |= UserInfo.FLAG_ADMIN; 1923 } 1924 } 1925 } 1926 1927 userId = getNextAvailableId(); 1928 Environment.getUserSystemDirectory(userId).mkdirs(); 1929 boolean ephemeralGuests = Resources.getSystem() 1930 .getBoolean(com.android.internal.R.bool.config_guestUserEphemeral); 1931 1932 synchronized (mUsersLock) { 1933 // Add ephemeral flag to guests/users if required. Also inherit it from parent. 1934 if ((isGuest && ephemeralGuests) || mForceEphemeralUsers 1935 || (parent != null && parent.info.isEphemeral())) { 1936 flags |= UserInfo.FLAG_EPHEMERAL; 1937 } 1938 1939 userInfo = new UserInfo(userId, name, null, flags); 1940 userInfo.serialNumber = mNextSerialNumber++; 1941 long now = System.currentTimeMillis(); 1942 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1943 userInfo.partial = true; 1944 userData = new UserData(); 1945 userData.info = userInfo; 1946 mUsers.put(userId, userData); 1947 } 1948 writeUserLP(userData); 1949 writeUserListLP(); 1950 if (parent != null) { 1951 if (isManagedProfile) { 1952 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1953 parent.info.profileGroupId = parent.info.id; 1954 writeUserLP(parent); 1955 } 1956 userInfo.profileGroupId = parent.info.profileGroupId; 1957 } else if (isRestricted) { 1958 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 1959 parent.info.restrictedProfileParentId = parent.info.id; 1960 writeUserLP(parent); 1961 } 1962 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 1963 } 1964 } 1965 } 1966 final StorageManager storage = mContext.getSystemService(StorageManager.class); 1967 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 1968 prepareUserStorage(userId, userInfo.serialNumber, 1969 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 1970 mPm.createNewUser(userId); 1971 userInfo.partial = false; 1972 synchronized (mPackagesLock) { 1973 writeUserLP(userData); 1974 } 1975 updateUserIds(); 1976 Bundle restrictions = new Bundle(); 1977 if (isGuest) { 1978 synchronized (mGuestRestrictions) { 1979 restrictions.putAll(mGuestRestrictions); 1980 } 1981 } 1982 synchronized (mRestrictionsLock) { 1983 mBaseUserRestrictions.append(userId, restrictions); 1984 } 1985 mPm.newUserCreated(userId); 1986 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 1987 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 1988 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 1989 android.Manifest.permission.MANAGE_USERS); 1990 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 1991 } finally { 1992 Binder.restoreCallingIdentity(ident); 1993 } 1994 return userInfo; 1995 } 1996 1997 /** 1998 * @hide 1999 */ 2000 @Override 2001 public UserInfo createRestrictedProfile(String name, int parentUserId) { 2002 checkManageUsersPermission("setupRestrictedProfile"); 2003 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 2004 if (user == null) { 2005 return null; 2006 } 2007 long identity = Binder.clearCallingIdentity(); 2008 try { 2009 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 2010 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 2011 // the putIntForUser() will fail. 2012 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 2013 android.provider.Settings.Secure.LOCATION_MODE, 2014 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 2015 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 2016 } finally { 2017 Binder.restoreCallingIdentity(identity); 2018 } 2019 return user; 2020 } 2021 2022 /** 2023 * Find the current guest user. If the Guest user is partial, 2024 * then do not include it in the results as it is about to die. 2025 */ 2026 private UserInfo findCurrentGuestUser() { 2027 synchronized (mUsersLock) { 2028 final int size = mUsers.size(); 2029 for (int i = 0; i < size; i++) { 2030 final UserInfo user = mUsers.valueAt(i).info; 2031 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 2032 return user; 2033 } 2034 } 2035 } 2036 return null; 2037 } 2038 2039 /** 2040 * Mark this guest user for deletion to allow us to create another guest 2041 * and switch to that user before actually removing this guest. 2042 * @param userHandle the userid of the current guest 2043 * @return whether the user could be marked for deletion 2044 */ 2045 @Override 2046 public boolean markGuestForDeletion(int userHandle) { 2047 checkManageUsersPermission("Only the system can remove users"); 2048 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2049 UserManager.DISALLOW_REMOVE_USER, false)) { 2050 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2051 return false; 2052 } 2053 2054 long ident = Binder.clearCallingIdentity(); 2055 try { 2056 final UserData userData; 2057 synchronized (mPackagesLock) { 2058 synchronized (mUsersLock) { 2059 userData = mUsers.get(userHandle); 2060 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2061 return false; 2062 } 2063 } 2064 if (!userData.info.isGuest()) { 2065 return false; 2066 } 2067 // We set this to a guest user that is to be removed. This is a temporary state 2068 // where we are allowed to add new Guest users, even if this one is still not 2069 // removed. This user will still show up in getUserInfo() calls. 2070 // If we don't get around to removing this Guest user, it will be purged on next 2071 // startup. 2072 userData.info.guestToRemove = true; 2073 // Mark it as disabled, so that it isn't returned any more when 2074 // profiles are queried. 2075 userData.info.flags |= UserInfo.FLAG_DISABLED; 2076 writeUserLP(userData); 2077 } 2078 } finally { 2079 Binder.restoreCallingIdentity(ident); 2080 } 2081 return true; 2082 } 2083 2084 /** 2085 * Removes a user and all data directories created for that user. This method should be called 2086 * after the user's processes have been terminated. 2087 * @param userHandle the user's id 2088 */ 2089 @Override 2090 public boolean removeUser(int userHandle) { 2091 checkManageUsersPermission("Only the system can remove users"); 2092 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2093 UserManager.DISALLOW_REMOVE_USER, false)) { 2094 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2095 return false; 2096 } 2097 2098 long ident = Binder.clearCallingIdentity(); 2099 try { 2100 final UserData userData; 2101 int currentUser = ActivityManager.getCurrentUser(); 2102 if (currentUser == userHandle) { 2103 Log.w(LOG_TAG, "Current user cannot be removed"); 2104 return false; 2105 } 2106 synchronized (mPackagesLock) { 2107 synchronized (mUsersLock) { 2108 userData = mUsers.get(userHandle); 2109 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2110 return false; 2111 } 2112 2113 // We remember deleted user IDs to prevent them from being 2114 // reused during the current boot; they can still be reused 2115 // after a reboot. 2116 mRemovingUserIds.put(userHandle, true); 2117 } 2118 2119 try { 2120 mAppOpsService.removeUser(userHandle); 2121 } catch (RemoteException e) { 2122 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2123 } 2124 // Set this to a partially created user, so that the user will be purged 2125 // on next startup, in case the runtime stops now before stopping and 2126 // removing the user completely. 2127 userData.info.partial = true; 2128 // Mark it as disabled, so that it isn't returned any more when 2129 // profiles are queried. 2130 userData.info.flags |= UserInfo.FLAG_DISABLED; 2131 writeUserLP(userData); 2132 } 2133 2134 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2135 && userData.info.isManagedProfile()) { 2136 // Send broadcast to notify system that the user removed was a 2137 // managed user. 2138 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2139 } 2140 2141 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2142 int res; 2143 try { 2144 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 2145 new IStopUserCallback.Stub() { 2146 @Override 2147 public void userStopped(int userId) { 2148 finishRemoveUser(userId); 2149 } 2150 @Override 2151 public void userStopAborted(int userId) { 2152 } 2153 }); 2154 } catch (RemoteException e) { 2155 return false; 2156 } 2157 return res == ActivityManager.USER_OP_SUCCESS; 2158 } finally { 2159 Binder.restoreCallingIdentity(ident); 2160 } 2161 } 2162 2163 void finishRemoveUser(final int userHandle) { 2164 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2165 // Let other services shutdown any activity and clean up their state before completely 2166 // wiping the user's system directory and removing from the user list 2167 long ident = Binder.clearCallingIdentity(); 2168 try { 2169 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2170 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2171 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2172 android.Manifest.permission.MANAGE_USERS, 2173 2174 new BroadcastReceiver() { 2175 @Override 2176 public void onReceive(Context context, Intent intent) { 2177 if (DBG) { 2178 Slog.i(LOG_TAG, 2179 "USER_REMOVED broadcast sent, cleaning up user data " 2180 + userHandle); 2181 } 2182 new Thread() { 2183 @Override 2184 public void run() { 2185 // Clean up any ActivityManager state 2186 LocalServices.getService(ActivityManagerInternal.class) 2187 .onUserRemoved(userHandle); 2188 removeUserState(userHandle); 2189 } 2190 }.start(); 2191 } 2192 }, 2193 2194 null, Activity.RESULT_OK, null, null); 2195 } finally { 2196 Binder.restoreCallingIdentity(ident); 2197 } 2198 } 2199 2200 private void removeUserState(final int userHandle) { 2201 try { 2202 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2203 } catch (IllegalStateException e) { 2204 // This may be simply because the user was partially created. 2205 Slog.i(LOG_TAG, 2206 "Destroying key for user " + userHandle + " failed, continuing anyway", e); 2207 } 2208 // Cleanup package manager settings 2209 mPm.cleanUpUser(this, userHandle); 2210 2211 // Remove this user from the list 2212 synchronized (mUsersLock) { 2213 mUsers.remove(userHandle); 2214 mIsUserManaged.delete(userHandle); 2215 } 2216 synchronized (mRestrictionsLock) { 2217 mBaseUserRestrictions.remove(userHandle); 2218 mAppliedUserRestrictions.remove(userHandle); 2219 mCachedEffectiveUserRestrictions.remove(userHandle); 2220 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2221 } 2222 // Update the user list 2223 synchronized (mPackagesLock) { 2224 writeUserListLP(); 2225 } 2226 // Remove user file 2227 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2228 userFile.delete(); 2229 updateUserIds(); 2230 File userDir = Environment.getUserSystemDirectory(userHandle); 2231 File renamedUserDir = Environment.getUserSystemDirectory(UserHandle.USER_NULL - userHandle); 2232 if (userDir.renameTo(renamedUserDir)) { 2233 removeDirectoryRecursive(renamedUserDir); 2234 } else { 2235 removeDirectoryRecursive(userDir); 2236 } 2237 } 2238 2239 private void removeDirectoryRecursive(File parent) { 2240 if (parent.isDirectory()) { 2241 String[] files = parent.list(); 2242 for (String filename : files) { 2243 File child = new File(parent, filename); 2244 removeDirectoryRecursive(child); 2245 } 2246 } 2247 parent.delete(); 2248 } 2249 2250 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2251 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2252 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2253 Intent.FLAG_RECEIVER_FOREGROUND); 2254 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2255 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2256 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2257 } 2258 2259 @Override 2260 public Bundle getApplicationRestrictions(String packageName) { 2261 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2262 } 2263 2264 @Override 2265 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2266 if (UserHandle.getCallingUserId() != userId 2267 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2268 checkSystemOrRoot("get application restrictions for other users/apps"); 2269 } 2270 synchronized (mPackagesLock) { 2271 // Read the restrictions from XML 2272 return readApplicationRestrictionsLP(packageName, userId); 2273 } 2274 } 2275 2276 @Override 2277 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2278 int userId) { 2279 checkSystemOrRoot("set application restrictions"); 2280 synchronized (mPackagesLock) { 2281 if (restrictions == null || restrictions.isEmpty()) { 2282 cleanAppRestrictionsForPackage(packageName, userId); 2283 } else { 2284 // Write the restrictions to XML 2285 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2286 } 2287 } 2288 2289 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2290 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2291 changeIntent.setPackage(packageName); 2292 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2293 mContext.sendBroadcastAsUser(changeIntent, UserHandle.of(userId)); 2294 } 2295 2296 private int getUidForPackage(String packageName) { 2297 long ident = Binder.clearCallingIdentity(); 2298 try { 2299 return mContext.getPackageManager().getApplicationInfo(packageName, 2300 PackageManager.MATCH_UNINSTALLED_PACKAGES).uid; 2301 } catch (NameNotFoundException nnfe) { 2302 return -1; 2303 } finally { 2304 Binder.restoreCallingIdentity(ident); 2305 } 2306 } 2307 2308 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2309 AtomicFile restrictionsFile = 2310 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2311 packageToRestrictionsFileName(packageName))); 2312 return readApplicationRestrictionsLP(restrictionsFile); 2313 } 2314 2315 @VisibleForTesting 2316 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2317 final Bundle restrictions = new Bundle(); 2318 final ArrayList<String> values = new ArrayList<>(); 2319 if (!restrictionsFile.getBaseFile().exists()) { 2320 return restrictions; 2321 } 2322 2323 FileInputStream fis = null; 2324 try { 2325 fis = restrictionsFile.openRead(); 2326 XmlPullParser parser = Xml.newPullParser(); 2327 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2328 XmlUtils.nextElement(parser); 2329 if (parser.getEventType() != XmlPullParser.START_TAG) { 2330 Slog.e(LOG_TAG, "Unable to read restrictions file " 2331 + restrictionsFile.getBaseFile()); 2332 return restrictions; 2333 } 2334 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2335 readEntry(restrictions, values, parser); 2336 } 2337 } catch (IOException|XmlPullParserException e) { 2338 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2339 } finally { 2340 IoUtils.closeQuietly(fis); 2341 } 2342 return restrictions; 2343 } 2344 2345 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2346 XmlPullParser parser) throws XmlPullParserException, IOException { 2347 int type = parser.getEventType(); 2348 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2349 String key = parser.getAttributeValue(null, ATTR_KEY); 2350 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2351 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2352 if (multiple != null) { 2353 values.clear(); 2354 int count = Integer.parseInt(multiple); 2355 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2356 if (type == XmlPullParser.START_TAG 2357 && parser.getName().equals(TAG_VALUE)) { 2358 values.add(parser.nextText().trim()); 2359 count--; 2360 } 2361 } 2362 String [] valueStrings = new String[values.size()]; 2363 values.toArray(valueStrings); 2364 restrictions.putStringArray(key, valueStrings); 2365 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2366 restrictions.putBundle(key, readBundleEntry(parser, values)); 2367 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2368 final int outerDepth = parser.getDepth(); 2369 ArrayList<Bundle> bundleList = new ArrayList<>(); 2370 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2371 Bundle childBundle = readBundleEntry(parser, values); 2372 bundleList.add(childBundle); 2373 } 2374 restrictions.putParcelableArray(key, 2375 bundleList.toArray(new Bundle[bundleList.size()])); 2376 } else { 2377 String value = parser.nextText().trim(); 2378 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2379 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2380 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2381 restrictions.putInt(key, Integer.parseInt(value)); 2382 } else { 2383 restrictions.putString(key, value); 2384 } 2385 } 2386 } 2387 } 2388 2389 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2390 throws IOException, XmlPullParserException { 2391 Bundle childBundle = new Bundle(); 2392 final int outerDepth = parser.getDepth(); 2393 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2394 readEntry(childBundle, values, parser); 2395 } 2396 return childBundle; 2397 } 2398 2399 private void writeApplicationRestrictionsLP(String packageName, 2400 Bundle restrictions, int userId) { 2401 AtomicFile restrictionsFile = new AtomicFile( 2402 new File(Environment.getUserSystemDirectory(userId), 2403 packageToRestrictionsFileName(packageName))); 2404 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2405 } 2406 2407 @VisibleForTesting 2408 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2409 FileOutputStream fos = null; 2410 try { 2411 fos = restrictionsFile.startWrite(); 2412 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2413 2414 final XmlSerializer serializer = new FastXmlSerializer(); 2415 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2416 serializer.startDocument(null, true); 2417 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2418 2419 serializer.startTag(null, TAG_RESTRICTIONS); 2420 writeBundle(restrictions, serializer); 2421 serializer.endTag(null, TAG_RESTRICTIONS); 2422 2423 serializer.endDocument(); 2424 restrictionsFile.finishWrite(fos); 2425 } catch (Exception e) { 2426 restrictionsFile.failWrite(fos); 2427 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2428 } 2429 } 2430 2431 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2432 throws IOException { 2433 for (String key : restrictions.keySet()) { 2434 Object value = restrictions.get(key); 2435 serializer.startTag(null, TAG_ENTRY); 2436 serializer.attribute(null, ATTR_KEY, key); 2437 2438 if (value instanceof Boolean) { 2439 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2440 serializer.text(value.toString()); 2441 } else if (value instanceof Integer) { 2442 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2443 serializer.text(value.toString()); 2444 } else if (value == null || value instanceof String) { 2445 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2446 serializer.text(value != null ? (String) value : ""); 2447 } else if (value instanceof Bundle) { 2448 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2449 writeBundle((Bundle) value, serializer); 2450 } else if (value instanceof Parcelable[]) { 2451 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2452 Parcelable[] array = (Parcelable[]) value; 2453 for (Parcelable parcelable : array) { 2454 if (!(parcelable instanceof Bundle)) { 2455 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2456 } 2457 serializer.startTag(null, TAG_ENTRY); 2458 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2459 writeBundle((Bundle) parcelable, serializer); 2460 serializer.endTag(null, TAG_ENTRY); 2461 } 2462 } else { 2463 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2464 String[] values = (String[]) value; 2465 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2466 for (String choice : values) { 2467 serializer.startTag(null, TAG_VALUE); 2468 serializer.text(choice != null ? choice : ""); 2469 serializer.endTag(null, TAG_VALUE); 2470 } 2471 } 2472 serializer.endTag(null, TAG_ENTRY); 2473 } 2474 } 2475 2476 @Override 2477 public int getUserSerialNumber(int userHandle) { 2478 synchronized (mUsersLock) { 2479 if (!exists(userHandle)) return -1; 2480 return getUserInfoLU(userHandle).serialNumber; 2481 } 2482 } 2483 2484 @Override 2485 public int getUserHandle(int userSerialNumber) { 2486 synchronized (mUsersLock) { 2487 for (int userId : mUserIds) { 2488 UserInfo info = getUserInfoLU(userId); 2489 if (info != null && info.serialNumber == userSerialNumber) return userId; 2490 } 2491 // Not found 2492 return -1; 2493 } 2494 } 2495 2496 @Override 2497 public long getUserCreationTime(int userHandle) { 2498 int callingUserId = UserHandle.getCallingUserId(); 2499 UserInfo userInfo = null; 2500 synchronized (mUsersLock) { 2501 if (callingUserId == userHandle) { 2502 userInfo = getUserInfoLU(userHandle); 2503 } else { 2504 UserInfo parent = getProfileParentLU(userHandle); 2505 if (parent != null && parent.id == callingUserId) { 2506 userInfo = getUserInfoLU(userHandle); 2507 } 2508 } 2509 } 2510 if (userInfo == null) { 2511 throw new SecurityException("userHandle can only be the calling user or a managed " 2512 + "profile associated with this user"); 2513 } 2514 return userInfo.creationTime; 2515 } 2516 2517 /** 2518 * Caches the list of user ids in an array, adjusting the array size when necessary. 2519 */ 2520 private void updateUserIds() { 2521 int num = 0; 2522 synchronized (mUsersLock) { 2523 final int userSize = mUsers.size(); 2524 for (int i = 0; i < userSize; i++) { 2525 if (!mUsers.valueAt(i).info.partial) { 2526 num++; 2527 } 2528 } 2529 final int[] newUsers = new int[num]; 2530 int n = 0; 2531 for (int i = 0; i < userSize; i++) { 2532 if (!mUsers.valueAt(i).info.partial) { 2533 newUsers[n++] = mUsers.keyAt(i); 2534 } 2535 } 2536 mUserIds = newUsers; 2537 } 2538 } 2539 2540 /** 2541 * Prepare storage areas for given user on all mounted devices. 2542 */ 2543 private void prepareUserStorage(int userId, int userSerial, int flags) { 2544 final StorageManager storage = mContext.getSystemService(StorageManager.class); 2545 for (VolumeInfo vol : storage.getWritablePrivateVolumes()) { 2546 final String volumeUuid = vol.getFsUuid(); 2547 storage.prepareUserStorage(volumeUuid, userId, userSerial, flags); 2548 } 2549 } 2550 2551 /** 2552 * Called right before a user is started. This gives us a chance to prepare 2553 * app storage and apply any user restrictions. 2554 */ 2555 public void onBeforeStartUser(int userId) { 2556 final int userSerial = getUserSerialNumber(userId); 2557 prepareUserStorage(userId, userSerial, StorageManager.FLAG_STORAGE_DE); 2558 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_DE); 2559 2560 if (userId != UserHandle.USER_SYSTEM) { 2561 synchronized (mRestrictionsLock) { 2562 applyUserRestrictionsLR(userId); 2563 } 2564 } 2565 } 2566 2567 /** 2568 * Called right before a user is unlocked. This gives us a chance to prepare 2569 * app storage. 2570 */ 2571 public void onBeforeUnlockUser(@UserIdInt int userId) { 2572 final int userSerial = getUserSerialNumber(userId); 2573 prepareUserStorage(userId, userSerial, StorageManager.FLAG_STORAGE_CE); 2574 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_CE); 2575 } 2576 2577 /** 2578 * Make a note of the last started time of a user and do some cleanup. 2579 * @param userId the user that was just foregrounded 2580 */ 2581 public void onUserLoggedIn(@UserIdInt int userId) { 2582 UserData userData = getUserDataNoChecks(userId); 2583 if (userData == null || userData.info.partial) { 2584 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2585 return; 2586 } 2587 2588 final long now = System.currentTimeMillis(); 2589 if (now > EPOCH_PLUS_30_YEARS) { 2590 userData.info.lastLoggedInTime = now; 2591 } 2592 userData.info.lastLoggedInFingerprint = Build.FINGERPRINT; 2593 scheduleWriteUser(userData); 2594 } 2595 2596 /** 2597 * Returns the next available user id, filling in any holes in the ids. 2598 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2599 * for data and battery stats collection, or unexpected cross-talk. 2600 */ 2601 private int getNextAvailableId() { 2602 synchronized (mUsersLock) { 2603 int i = MIN_USER_ID; 2604 while (i < MAX_USER_ID) { 2605 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2606 return i; 2607 } 2608 i++; 2609 } 2610 } 2611 throw new IllegalStateException("No user id available!"); 2612 } 2613 2614 private String packageToRestrictionsFileName(String packageName) { 2615 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2616 } 2617 2618 /** 2619 * Enforce that serial number stored in user directory inode matches the 2620 * given expected value. Gracefully sets the serial number if currently 2621 * undefined. 2622 * 2623 * @throws IOException when problem extracting serial number, or serial 2624 * number is mismatched. 2625 */ 2626 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2627 final int foundSerial = getSerialNumber(file); 2628 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 2629 2630 if (foundSerial == -1) { 2631 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 2632 try { 2633 setSerialNumber(file, serialNumber); 2634 } catch (IOException e) { 2635 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 2636 } 2637 2638 } else if (foundSerial != serialNumber) { 2639 throw new IOException("Found serial number " + foundSerial 2640 + " doesn't match expected " + serialNumber); 2641 } 2642 } 2643 2644 /** 2645 * Set serial number stored in user directory inode. 2646 * 2647 * @throws IOException if serial number was already set 2648 */ 2649 private static void setSerialNumber(File file, int serialNumber) 2650 throws IOException { 2651 try { 2652 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 2653 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 2654 } catch (ErrnoException e) { 2655 throw e.rethrowAsIOException(); 2656 } 2657 } 2658 2659 /** 2660 * Return serial number stored in user directory inode. 2661 * 2662 * @return parsed serial number, or -1 if not set 2663 */ 2664 private static int getSerialNumber(File file) throws IOException { 2665 try { 2666 final byte[] buf = new byte[256]; 2667 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 2668 final String serial = new String(buf, 0, len); 2669 try { 2670 return Integer.parseInt(serial); 2671 } catch (NumberFormatException e) { 2672 throw new IOException("Bad serial number: " + serial); 2673 } 2674 } catch (ErrnoException e) { 2675 if (e.errno == OsConstants.ENODATA) { 2676 return -1; 2677 } else { 2678 throw e.rethrowAsIOException(); 2679 } 2680 } 2681 } 2682 2683 @Override 2684 public void setSeedAccountData(int userId, String accountName, String accountType, 2685 PersistableBundle accountOptions, boolean persist) { 2686 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 2687 synchronized (mPackagesLock) { 2688 final UserData userData; 2689 synchronized (mUsersLock) { 2690 userData = getUserDataLU(userId); 2691 if (userData == null) { 2692 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 2693 return; 2694 } 2695 userData.seedAccountName = accountName; 2696 userData.seedAccountType = accountType; 2697 userData.seedAccountOptions = accountOptions; 2698 userData.persistSeedData = persist; 2699 } 2700 if (persist) { 2701 writeUserLP(userData); 2702 } 2703 } 2704 } 2705 2706 @Override 2707 public String getSeedAccountName() throws RemoteException { 2708 checkManageUsersPermission("Cannot get seed account information"); 2709 synchronized (mUsersLock) { 2710 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2711 return userData.seedAccountName; 2712 } 2713 } 2714 2715 @Override 2716 public String getSeedAccountType() throws RemoteException { 2717 checkManageUsersPermission("Cannot get seed account information"); 2718 synchronized (mUsersLock) { 2719 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2720 return userData.seedAccountType; 2721 } 2722 } 2723 2724 @Override 2725 public PersistableBundle getSeedAccountOptions() throws RemoteException { 2726 checkManageUsersPermission("Cannot get seed account information"); 2727 synchronized (mUsersLock) { 2728 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2729 return userData.seedAccountOptions; 2730 } 2731 } 2732 2733 @Override 2734 public void clearSeedAccountData() throws RemoteException { 2735 checkManageUsersPermission("Cannot clear seed account information"); 2736 synchronized (mPackagesLock) { 2737 UserData userData; 2738 synchronized (mUsersLock) { 2739 userData = getUserDataLU(UserHandle.getCallingUserId()); 2740 if (userData == null) return; 2741 userData.clearSeedAccountData(); 2742 } 2743 writeUserLP(userData); 2744 } 2745 } 2746 2747 @Override 2748 public boolean someUserHasSeedAccount(String accountName, String accountType) 2749 throws RemoteException { 2750 checkManageUsersPermission("Cannot check seed account information"); 2751 synchronized (mUsersLock) { 2752 final int userSize = mUsers.size(); 2753 for (int i = 0; i < userSize; i++) { 2754 final UserData data = mUsers.valueAt(i); 2755 if (data.info.isInitialized()) continue; 2756 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 2757 continue; 2758 } 2759 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 2760 continue; 2761 } 2762 return true; 2763 } 2764 } 2765 return false; 2766 } 2767 2768 @Override 2769 public void onShellCommand(FileDescriptor in, FileDescriptor out, 2770 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 2771 (new Shell()).exec(this, in, out, err, args, resultReceiver); 2772 } 2773 2774 int onShellCommand(Shell shell, String cmd) { 2775 if (cmd == null) { 2776 return shell.handleDefaultCommands(cmd); 2777 } 2778 2779 final PrintWriter pw = shell.getOutPrintWriter(); 2780 try { 2781 switch(cmd) { 2782 case "list": 2783 return runList(pw); 2784 } 2785 } catch (RemoteException e) { 2786 pw.println("Remote exception: " + e); 2787 } 2788 return -1; 2789 } 2790 2791 private int runList(PrintWriter pw) throws RemoteException { 2792 final IActivityManager am = ActivityManagerNative.getDefault(); 2793 final List<UserInfo> users = getUsers(false); 2794 if (users == null) { 2795 pw.println("Error: couldn't get users"); 2796 return 1; 2797 } else { 2798 pw.println("Users:"); 2799 for (int i = 0; i < users.size(); i++) { 2800 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 2801 pw.println("\t" + users.get(i).toString() + running); 2802 } 2803 return 0; 2804 } 2805 } 2806 2807 @Override 2808 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2809 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2810 != PackageManager.PERMISSION_GRANTED) { 2811 pw.println("Permission Denial: can't dump UserManager from from pid=" 2812 + Binder.getCallingPid() 2813 + ", uid=" + Binder.getCallingUid() 2814 + " without permission " 2815 + android.Manifest.permission.DUMP); 2816 return; 2817 } 2818 2819 long now = System.currentTimeMillis(); 2820 StringBuilder sb = new StringBuilder(); 2821 synchronized (mPackagesLock) { 2822 synchronized (mUsersLock) { 2823 pw.println("Users:"); 2824 for (int i = 0; i < mUsers.size(); i++) { 2825 UserData userData = mUsers.valueAt(i); 2826 if (userData == null) { 2827 continue; 2828 } 2829 UserInfo userInfo = userData.info; 2830 final int userId = userInfo.id; 2831 pw.print(" "); pw.print(userInfo); 2832 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 2833 if (mRemovingUserIds.get(userId)) { 2834 pw.print(" <removing> "); 2835 } 2836 if (userInfo.partial) { 2837 pw.print(" <partial>"); 2838 } 2839 pw.println(); 2840 pw.print(" Created: "); 2841 if (userInfo.creationTime == 0) { 2842 pw.println("<unknown>"); 2843 } else { 2844 sb.setLength(0); 2845 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 2846 sb.append(" ago"); 2847 pw.println(sb); 2848 } 2849 pw.print(" Last logged in: "); 2850 if (userInfo.lastLoggedInTime == 0) { 2851 pw.println("<unknown>"); 2852 } else { 2853 sb.setLength(0); 2854 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 2855 sb.append(" ago"); 2856 pw.println(sb); 2857 } 2858 pw.print(" Last logged in fingerprint: "); 2859 pw.println(userInfo.lastLoggedInFingerprint); 2860 pw.print(" Has profile owner: "); 2861 pw.println(mIsUserManaged.get(userId)); 2862 pw.println(" Restrictions:"); 2863 synchronized (mRestrictionsLock) { 2864 UserRestrictionsUtils.dumpRestrictions( 2865 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 2866 pw.println(" Device policy local restrictions:"); 2867 UserRestrictionsUtils.dumpRestrictions( 2868 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 2869 pw.println(" Effective restrictions:"); 2870 UserRestrictionsUtils.dumpRestrictions( 2871 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 2872 } 2873 2874 if (userData.account != null) { 2875 pw.print(" Account name: " + userData.account); 2876 pw.println(); 2877 } 2878 2879 if (userData.seedAccountName != null) { 2880 pw.print(" Seed account name: " + userData.seedAccountName); 2881 pw.println(); 2882 if (userData.seedAccountType != null) { 2883 pw.print(" account type: " + userData.seedAccountType); 2884 pw.println(); 2885 } 2886 if (userData.seedAccountOptions != null) { 2887 pw.print(" account options exist"); 2888 pw.println(); 2889 } 2890 } 2891 } 2892 } 2893 pw.println(); 2894 pw.println(" Device policy global restrictions:"); 2895 synchronized (mRestrictionsLock) { 2896 UserRestrictionsUtils 2897 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 2898 } 2899 pw.println(); 2900 pw.println(" Guest restrictions:"); 2901 synchronized (mGuestRestrictions) { 2902 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 2903 } 2904 synchronized (mUsersLock) { 2905 pw.println(); 2906 pw.println(" Device managed: " + mIsDeviceManaged); 2907 } 2908 // Dump some capabilities 2909 pw.println(); 2910 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 2911 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 2912 pw.println(" All guests ephemeral: " + Resources.getSystem().getBoolean( 2913 com.android.internal.R.bool.config_guestUserEphemeral)); 2914 } 2915 } 2916 2917 final class MainHandler extends Handler { 2918 2919 @Override 2920 public void handleMessage(Message msg) { 2921 switch (msg.what) { 2922 case WRITE_USER_MSG: 2923 removeMessages(WRITE_USER_MSG, msg.obj); 2924 synchronized (mPackagesLock) { 2925 int userId = ((UserData) msg.obj).info.id; 2926 UserData userData = getUserDataNoChecks(userId); 2927 if (userData != null) { 2928 writeUserLP(userData); 2929 } 2930 } 2931 } 2932 } 2933 } 2934 2935 /** 2936 * @param userId 2937 * @return whether the user has been initialized yet 2938 */ 2939 boolean isInitialized(int userId) { 2940 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 2941 } 2942 2943 private class LocalService extends UserManagerInternal { 2944 @Override 2945 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 2946 @Nullable Bundle globalRestrictions) { 2947 UserManagerService.this.setDevicePolicyUserRestrictionsInner(userId, localRestrictions, 2948 globalRestrictions); 2949 } 2950 2951 @Override 2952 public Bundle getBaseUserRestrictions(int userId) { 2953 synchronized (mRestrictionsLock) { 2954 return mBaseUserRestrictions.get(userId); 2955 } 2956 } 2957 2958 @Override 2959 public void setBaseUserRestrictionsByDpmsForMigration( 2960 int userId, Bundle baseRestrictions) { 2961 synchronized (mRestrictionsLock) { 2962 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 2963 invalidateEffectiveUserRestrictionsLR(userId); 2964 } 2965 2966 final UserData userData = getUserDataNoChecks(userId); 2967 synchronized (mPackagesLock) { 2968 if (userData != null) { 2969 writeUserLP(userData); 2970 } else { 2971 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 2972 } 2973 } 2974 } 2975 2976 @Override 2977 public boolean getUserRestriction(int userId, String key) { 2978 return getUserRestrictions(userId).getBoolean(key); 2979 } 2980 2981 @Override 2982 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 2983 synchronized (mUserRestrictionsListeners) { 2984 mUserRestrictionsListeners.add(listener); 2985 } 2986 } 2987 2988 @Override 2989 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 2990 synchronized (mUserRestrictionsListeners) { 2991 mUserRestrictionsListeners.remove(listener); 2992 } 2993 } 2994 2995 @Override 2996 public void setDeviceManaged(boolean isManaged) { 2997 synchronized (mUsersLock) { 2998 mIsDeviceManaged = isManaged; 2999 } 3000 } 3001 3002 @Override 3003 public void setUserManaged(int userId, boolean isManaged) { 3004 synchronized (mUsersLock) { 3005 mIsUserManaged.put(userId, isManaged); 3006 } 3007 } 3008 3009 @Override 3010 public void setUserIcon(int userId, Bitmap bitmap) { 3011 long ident = Binder.clearCallingIdentity(); 3012 try { 3013 synchronized (mPackagesLock) { 3014 UserData userData = getUserDataNoChecks(userId); 3015 if (userData == null || userData.info.partial) { 3016 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 3017 return; 3018 } 3019 writeBitmapLP(userData.info, bitmap); 3020 writeUserLP(userData); 3021 } 3022 sendUserInfoChangedBroadcast(userId); 3023 } finally { 3024 Binder.restoreCallingIdentity(ident); 3025 } 3026 } 3027 3028 @Override 3029 public void setForceEphemeralUsers(boolean forceEphemeralUsers) { 3030 synchronized (mUsersLock) { 3031 mForceEphemeralUsers = forceEphemeralUsers; 3032 } 3033 } 3034 3035 @Override 3036 public void removeAllUsers() { 3037 if (UserHandle.USER_SYSTEM == ActivityManager.getCurrentUser()) { 3038 // Remove the non-system users straight away. 3039 removeNonSystemUsers(); 3040 } else { 3041 // Switch to the system user first and then remove the other users. 3042 BroadcastReceiver userSwitchedReceiver = new BroadcastReceiver() { 3043 @Override 3044 public void onReceive(Context context, Intent intent) { 3045 int userId = 3046 intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3047 if (userId != UserHandle.USER_SYSTEM) { 3048 return; 3049 } 3050 mContext.unregisterReceiver(this); 3051 removeNonSystemUsers(); 3052 } 3053 }; 3054 IntentFilter userSwitchedFilter = new IntentFilter(); 3055 userSwitchedFilter.addAction(Intent.ACTION_USER_SWITCHED); 3056 mContext.registerReceiver( 3057 userSwitchedReceiver, userSwitchedFilter, null, mHandler); 3058 3059 // Switch to the system user. 3060 ActivityManager am = 3061 (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 3062 am.switchUser(UserHandle.USER_SYSTEM); 3063 } 3064 } 3065 3066 @Override 3067 public void onEphemeralUserStop(int userId) { 3068 synchronized (mUsersLock) { 3069 UserInfo userInfo = getUserInfoLU(userId); 3070 if (userInfo != null && userInfo.isEphemeral()) { 3071 // Do not allow switching back to the ephemeral user again as the user is going 3072 // to be deleted. 3073 userInfo.flags |= UserInfo.FLAG_DISABLED; 3074 if (userInfo.isGuest()) { 3075 // Indicate that the guest will be deleted after it stops. 3076 userInfo.guestToRemove = true; 3077 } 3078 } 3079 } 3080 } 3081 3082 @Override 3083 public UserInfo createUserEvenWhenDisallowed(String name, int flags) { 3084 UserInfo user = createUserInternalUnchecked(name, flags, UserHandle.USER_NULL); 3085 // Keep this in sync with UserManager.createUser 3086 if (user != null && !user.isAdmin()) { 3087 setUserRestriction(UserManager.DISALLOW_SMS, true, user.id); 3088 setUserRestriction(UserManager.DISALLOW_OUTGOING_CALLS, true, user.id); 3089 } 3090 return user; 3091 } 3092 } 3093 3094 /* Remove all the users except of the system one. */ 3095 private void removeNonSystemUsers() { 3096 ArrayList<UserInfo> usersToRemove = new ArrayList<>(); 3097 synchronized (mUsersLock) { 3098 final int userSize = mUsers.size(); 3099 for (int i = 0; i < userSize; i++) { 3100 UserInfo ui = mUsers.valueAt(i).info; 3101 if (ui.id != UserHandle.USER_SYSTEM) { 3102 usersToRemove.add(ui); 3103 } 3104 } 3105 } 3106 for (UserInfo ui: usersToRemove) { 3107 removeUser(ui.id); 3108 } 3109 } 3110 3111 private class Shell extends ShellCommand { 3112 @Override 3113 public int onCommand(String cmd) { 3114 return onShellCommand(this, cmd); 3115 } 3116 3117 @Override 3118 public void onHelp() { 3119 final PrintWriter pw = getOutPrintWriter(); 3120 pw.println("User manager (user) commands:"); 3121 pw.println(" help"); 3122 pw.println(" Print this help text."); 3123 pw.println(""); 3124 pw.println(" list"); 3125 pw.println(" Prints all users on the system."); 3126 } 3127 } 3128 3129 private static void debug(String message) { 3130 Log.d(LOG_TAG, message + 3131 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 3132 } 3133} 3134