UserManagerService.java revision c533b566ff60041d4964765ce09a3da78e8866ca
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 boolean returnFullInfo = true; 471 if (userId != UserHandle.getCallingUserId()) { 472 checkManageUsersPermission("getting profiles related to user " + userId); 473 } else { 474 returnFullInfo = hasManageUsersPermission(); 475 } 476 final long ident = Binder.clearCallingIdentity(); 477 try { 478 synchronized (mUsersLock) { 479 return getProfilesLU(userId, enabledOnly, returnFullInfo); 480 } 481 } finally { 482 Binder.restoreCallingIdentity(ident); 483 } 484 } 485 486 /** Assume permissions already checked and caller's identity cleared */ 487 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly, boolean fullInfo) { 488 UserInfo user = getUserInfoLU(userId); 489 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 490 if (user == null) { 491 // Probably a dying user 492 return users; 493 } 494 final int userSize = mUsers.size(); 495 for (int i = 0; i < userSize; i++) { 496 UserInfo profile = mUsers.valueAt(i).info; 497 if (!isProfileOf(user, profile)) { 498 continue; 499 } 500 if (enabledOnly && !profile.isEnabled()) { 501 continue; 502 } 503 if (mRemovingUserIds.get(profile.id)) { 504 continue; 505 } 506 if (profile.partial) { 507 continue; 508 } 509 UserInfo userInfo = userWithName(profile); 510 // If full info is not required - clear PII data to prevent 3P apps from reading it 511 if (!fullInfo) { 512 userInfo = new UserInfo(userInfo); 513 userInfo.name = null; 514 userInfo.iconPath = null; 515 } 516 users.add(userInfo); 517 } 518 return users; 519 } 520 521 @Override 522 public int getCredentialOwnerProfile(int userHandle) { 523 checkManageUsersPermission("get the credential owner"); 524 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 525 synchronized (mUsersLock) { 526 UserInfo profileParent = getProfileParentLU(userHandle); 527 if (profileParent != null) { 528 return profileParent.id; 529 } 530 } 531 } 532 533 return userHandle; 534 } 535 536 @Override 537 public boolean isSameProfileGroup(int userId, int otherUserId) { 538 if (userId == otherUserId) return true; 539 checkManageUsersPermission("check if in the same profile group"); 540 synchronized (mPackagesLock) { 541 return isSameProfileGroupLP(userId, otherUserId); 542 } 543 } 544 545 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 546 synchronized (mUsersLock) { 547 UserInfo userInfo = getUserInfoLU(userId); 548 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 549 return false; 550 } 551 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 552 if (otherUserInfo == null 553 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 554 return false; 555 } 556 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 557 } 558 } 559 560 @Override 561 public UserInfo getProfileParent(int userHandle) { 562 checkManageUsersPermission("get the profile parent"); 563 synchronized (mUsersLock) { 564 return getProfileParentLU(userHandle); 565 } 566 } 567 568 private UserInfo getProfileParentLU(int userHandle) { 569 UserInfo profile = getUserInfoLU(userHandle); 570 if (profile == null) { 571 return null; 572 } 573 int parentUserId = profile.profileGroupId; 574 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 575 return null; 576 } else { 577 return getUserInfoLU(parentUserId); 578 } 579 } 580 581 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 582 return user.id == profile.id || 583 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 584 && user.profileGroupId == profile.profileGroupId); 585 } 586 587 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 588 UserHandle parentHandle, boolean inQuietMode) { 589 Intent intent = new Intent(); 590 if (inQuietMode) { 591 intent.setAction(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE); 592 } else { 593 intent.setAction(Intent.ACTION_MANAGED_PROFILE_AVAILABLE); 594 } 595 intent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 596 intent.putExtra(Intent.EXTRA_USER, profileHandle); 597 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 598 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 599 mContext.sendBroadcastAsUser(intent, parentHandle); 600 601 //TODO: remove once Launcher3 is updated. 602 Intent oldIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_AVAILABILITY_CHANGED); 603 oldIntent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 604 oldIntent.putExtra(Intent.EXTRA_USER, profileHandle); 605 oldIntent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 606 oldIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 607 mContext.sendBroadcastAsUser(oldIntent, parentHandle); 608 609 } 610 611 @Override 612 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 613 checkManageUsersPermission("silence profile"); 614 boolean changed = false; 615 UserInfo profile, parent; 616 synchronized (mPackagesLock) { 617 synchronized (mUsersLock) { 618 profile = getUserInfoLU(userHandle); 619 parent = getProfileParentLU(userHandle); 620 621 } 622 if (profile == null || !profile.isManagedProfile()) { 623 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 624 } 625 if (profile.isQuietModeEnabled() != enableQuietMode) { 626 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 627 writeUserLP(getUserDataLU(profile.id)); 628 changed = true; 629 } 630 } 631 if (changed) { 632 long identity = Binder.clearCallingIdentity(); 633 try { 634 if (enableQuietMode) { 635 ActivityManagerNative.getDefault().stopUser(userHandle, /* force */true, null); 636 } else { 637 ActivityManagerNative.getDefault().startUserInBackground(userHandle); 638 } 639 } catch (RemoteException e) { 640 Slog.e(LOG_TAG, "fail to start/stop user for quiet mode", e); 641 } finally { 642 Binder.restoreCallingIdentity(identity); 643 } 644 645 broadcastProfileAvailabilityChanges(profile.getUserHandle(), parent.getUserHandle(), 646 enableQuietMode); 647 } 648 } 649 650 @Override 651 public boolean isQuietModeEnabled(int userHandle) { 652 synchronized (mPackagesLock) { 653 UserInfo info; 654 synchronized (mUsersLock) { 655 info = getUserInfoLU(userHandle); 656 } 657 if (info == null || !info.isManagedProfile()) { 658 return false; 659 } 660 return info.isQuietModeEnabled(); 661 } 662 } 663 664 @Override 665 public void setUserEnabled(int userId) { 666 checkManageUsersPermission("enable user"); 667 synchronized (mPackagesLock) { 668 UserInfo info; 669 synchronized (mUsersLock) { 670 info = getUserInfoLU(userId); 671 } 672 if (info != null && !info.isEnabled()) { 673 info.flags ^= UserInfo.FLAG_DISABLED; 674 writeUserLP(getUserDataLU(info.id)); 675 } 676 } 677 } 678 679 @Override 680 public UserInfo getUserInfo(int userId) { 681 checkManageUsersPermission("query user"); 682 synchronized (mUsersLock) { 683 return userWithName(getUserInfoLU(userId)); 684 } 685 } 686 687 /** 688 * Returns a UserInfo object with the name filled in, for Owner, or the original 689 * if the name is already set. 690 */ 691 private UserInfo userWithName(UserInfo orig) { 692 if (orig != null && orig.name == null && orig.id == UserHandle.USER_SYSTEM) { 693 UserInfo withName = new UserInfo(orig); 694 withName.name = getOwnerName(); 695 return withName; 696 } else { 697 return orig; 698 } 699 } 700 701 @Override 702 public boolean isManagedProfile(int userId) { 703 int callingUserId = UserHandle.getCallingUserId(); 704 if (callingUserId != userId && !hasManageUsersPermission()) { 705 synchronized (mPackagesLock) { 706 if (!isSameProfileGroupLP(callingUserId, userId)) { 707 throw new SecurityException( 708 "You need MANAGE_USERS permission to: check if specified user a " + 709 "managed profile outside your profile group"); 710 } 711 } 712 } 713 synchronized (mUsersLock) { 714 UserInfo userInfo = getUserInfoLU(userId); 715 return userInfo != null && userInfo.isManagedProfile(); 716 } 717 } 718 719 @Override 720 public boolean isRestricted() { 721 synchronized (mUsersLock) { 722 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 723 } 724 } 725 726 @Override 727 public boolean canHaveRestrictedProfile(int userId) { 728 checkManageUsersPermission("canHaveRestrictedProfile"); 729 synchronized (mUsersLock) { 730 final UserInfo userInfo = getUserInfoLU(userId); 731 if (userInfo == null || !userInfo.canHaveProfile()) { 732 return false; 733 } 734 if (!userInfo.isAdmin()) { 735 return false; 736 } 737 // restricted profile can be created if there is no DO set and the admin user has no PO; 738 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 739 } 740 } 741 742 /* 743 * Should be locked on mUsers before calling this. 744 */ 745 private UserInfo getUserInfoLU(int userId) { 746 final UserData userData = mUsers.get(userId); 747 // If it is partial and not in the process of being removed, return as unknown user. 748 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 749 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 750 return null; 751 } 752 return userData != null ? userData.info : null; 753 } 754 755 private UserData getUserDataLU(int userId) { 756 final UserData userData = mUsers.get(userId); 757 // If it is partial and not in the process of being removed, return as unknown user. 758 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 759 return null; 760 } 761 return userData; 762 } 763 764 /** 765 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 766 * <p>No permissions checking or any addition checks are made</p> 767 */ 768 private UserInfo getUserInfoNoChecks(int userId) { 769 synchronized (mUsersLock) { 770 final UserData userData = mUsers.get(userId); 771 return userData != null ? userData.info : null; 772 } 773 } 774 775 /** 776 * Obtains {@link #mUsersLock} and return UserData from mUsers. 777 * <p>No permissions checking or any addition checks are made</p> 778 */ 779 private UserData getUserDataNoChecks(int userId) { 780 synchronized (mUsersLock) { 781 return mUsers.get(userId); 782 } 783 } 784 785 /** Called by PackageManagerService */ 786 public boolean exists(int userId) { 787 return getUserInfoNoChecks(userId) != null; 788 } 789 790 @Override 791 public void setUserName(int userId, String name) { 792 checkManageUsersPermission("rename users"); 793 boolean changed = false; 794 synchronized (mPackagesLock) { 795 UserData userData = getUserDataNoChecks(userId); 796 if (userData == null || userData.info.partial) { 797 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 798 return; 799 } 800 if (name != null && !name.equals(userData.info.name)) { 801 userData.info.name = name; 802 writeUserLP(userData); 803 changed = true; 804 } 805 } 806 if (changed) { 807 sendUserInfoChangedBroadcast(userId); 808 } 809 } 810 811 @Override 812 public void setUserIcon(int userId, Bitmap bitmap) { 813 checkManageUsersPermission("update users"); 814 if (hasUserRestriction(UserManager.DISALLOW_SET_USER_ICON, userId)) { 815 Log.w(LOG_TAG, "Cannot set user icon. DISALLOW_SET_USER_ICON is enabled."); 816 return; 817 } 818 mLocalService.setUserIcon(userId, bitmap); 819 } 820 821 822 823 private void sendUserInfoChangedBroadcast(int userId) { 824 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 825 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 826 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 827 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 828 } 829 830 @Override 831 public ParcelFileDescriptor getUserIcon(int targetUserId) { 832 String iconPath; 833 synchronized (mPackagesLock) { 834 UserInfo targetUserInfo = getUserInfoNoChecks(targetUserId); 835 if (targetUserInfo == null || targetUserInfo.partial) { 836 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + targetUserId); 837 return null; 838 } 839 840 final int callingUserId = UserHandle.getCallingUserId(); 841 final int callingGroupId = getUserInfoNoChecks(callingUserId).profileGroupId; 842 final int targetGroupId = targetUserInfo.profileGroupId; 843 final boolean sameGroup = (callingGroupId != UserInfo.NO_PROFILE_GROUP_ID 844 && callingGroupId == targetGroupId); 845 if ((callingUserId != targetUserId) && !sameGroup) { 846 checkManageUsersPermission("get the icon of a user who is not related"); 847 } 848 849 if (targetUserInfo.iconPath == null) { 850 return null; 851 } 852 iconPath = targetUserInfo.iconPath; 853 } 854 855 try { 856 return ParcelFileDescriptor.open( 857 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 858 } catch (FileNotFoundException e) { 859 Log.e(LOG_TAG, "Couldn't find icon file", e); 860 } 861 return null; 862 } 863 864 public void makeInitialized(int userId) { 865 checkManageUsersPermission("makeInitialized"); 866 boolean scheduleWriteUser = false; 867 UserData userData; 868 synchronized (mUsersLock) { 869 userData = mUsers.get(userId); 870 if (userData == null || userData.info.partial) { 871 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 872 return; 873 } 874 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 875 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 876 scheduleWriteUser = true; 877 } 878 } 879 if (scheduleWriteUser) { 880 scheduleWriteUser(userData); 881 } 882 } 883 884 /** 885 * If default guest restrictions haven't been initialized yet, add the basic 886 * restrictions. 887 */ 888 private void initDefaultGuestRestrictions() { 889 synchronized (mGuestRestrictions) { 890 if (mGuestRestrictions.isEmpty()) { 891 mGuestRestrictions.putBoolean(UserManager.DISALLOW_CONFIG_WIFI, true); 892 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 893 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 894 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 895 } 896 } 897 } 898 899 @Override 900 public Bundle getDefaultGuestRestrictions() { 901 checkManageUsersPermission("getDefaultGuestRestrictions"); 902 synchronized (mGuestRestrictions) { 903 return new Bundle(mGuestRestrictions); 904 } 905 } 906 907 @Override 908 public void setDefaultGuestRestrictions(Bundle restrictions) { 909 checkManageUsersPermission("setDefaultGuestRestrictions"); 910 synchronized (mGuestRestrictions) { 911 mGuestRestrictions.clear(); 912 mGuestRestrictions.putAll(restrictions); 913 } 914 synchronized (mPackagesLock) { 915 writeUserListLP(); 916 } 917 } 918 919 /** 920 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 921 */ 922 void setDevicePolicyUserRestrictionsInner(int userId, @NonNull Bundle local, 923 @Nullable Bundle global) { 924 Preconditions.checkNotNull(local); 925 boolean globalChanged = false; 926 boolean localChanged; 927 synchronized (mRestrictionsLock) { 928 if (global != null) { 929 // Update global. 930 globalChanged = !UserRestrictionsUtils.areEqual( 931 mDevicePolicyGlobalUserRestrictions, global); 932 if (globalChanged) { 933 mDevicePolicyGlobalUserRestrictions = global; 934 } 935 } 936 { 937 // Update local. 938 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 939 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 940 if (localChanged) { 941 mDevicePolicyLocalUserRestrictions.put(userId, local); 942 } 943 } 944 } 945 if (DBG) { 946 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 947 + " global=" + global + (globalChanged ? " (changed)" : "") 948 + " local=" + local + (localChanged ? " (changed)" : "") 949 ); 950 } 951 // Don't call them within the mRestrictionsLock. 952 synchronized (mPackagesLock) { 953 if (localChanged) { 954 writeUserLP(getUserDataNoChecks(userId)); 955 } 956 if (globalChanged) { 957 writeUserListLP(); 958 } 959 } 960 961 synchronized (mRestrictionsLock) { 962 if (globalChanged) { 963 applyUserRestrictionsForAllUsersLR(); 964 } else if (localChanged) { 965 applyUserRestrictionsLR(userId); 966 } 967 } 968 } 969 970 @GuardedBy("mRestrictionsLock") 971 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 972 final Bundle baseRestrictions = 973 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 974 final Bundle global = mDevicePolicyGlobalUserRestrictions; 975 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 976 977 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 978 // Common case first. 979 return baseRestrictions; 980 } 981 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 982 UserRestrictionsUtils.merge(effective, global); 983 UserRestrictionsUtils.merge(effective, local); 984 985 return effective; 986 } 987 988 @GuardedBy("mRestrictionsLock") 989 private void invalidateEffectiveUserRestrictionsLR(int userId) { 990 if (DBG) { 991 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 992 } 993 mCachedEffectiveUserRestrictions.remove(userId); 994 } 995 996 private Bundle getEffectiveUserRestrictions(int userId) { 997 synchronized (mRestrictionsLock) { 998 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 999 if (restrictions == null) { 1000 restrictions = computeEffectiveUserRestrictionsLR(userId); 1001 mCachedEffectiveUserRestrictions.put(userId, restrictions); 1002 } 1003 return restrictions; 1004 } 1005 } 1006 1007 /** @return a specific user restriction that's in effect currently. */ 1008 @Override 1009 public boolean hasUserRestriction(String restrictionKey, int userId) { 1010 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1011 return false; 1012 } 1013 Bundle restrictions = getEffectiveUserRestrictions(userId); 1014 return restrictions != null && restrictions.getBoolean(restrictionKey); 1015 } 1016 1017 /** 1018 * @return UserRestrictions that are in effect currently. This always returns a new 1019 * {@link Bundle}. 1020 */ 1021 @Override 1022 public Bundle getUserRestrictions(int userId) { 1023 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 1024 } 1025 1026 @Override 1027 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 1028 checkManageUsersPermission("hasBaseUserRestriction"); 1029 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1030 return false; 1031 } 1032 synchronized (mRestrictionsLock) { 1033 Bundle bundle = mBaseUserRestrictions.get(userId); 1034 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 1035 } 1036 } 1037 1038 @Override 1039 public void setUserRestriction(String key, boolean value, int userId) { 1040 checkManageUsersPermission("setUserRestriction"); 1041 if (!UserRestrictionsUtils.isValidRestriction(key)) { 1042 return; 1043 } 1044 synchronized (mRestrictionsLock) { 1045 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 1046 // a copy. 1047 final Bundle newRestrictions = UserRestrictionsUtils.clone( 1048 mBaseUserRestrictions.get(userId)); 1049 newRestrictions.putBoolean(key, value); 1050 1051 updateUserRestrictionsInternalLR(newRestrictions, userId); 1052 } 1053 } 1054 1055 /** 1056 * Optionally updating user restrictions, calculate the effective user restrictions and also 1057 * propagate to other services and system settings. 1058 * 1059 * @param newRestrictions User restrictions to set. 1060 * If null, will not update user restrictions and only does the propagation. 1061 * @param userId target user ID. 1062 */ 1063 @GuardedBy("mRestrictionsLock") 1064 private void updateUserRestrictionsInternalLR( 1065 @Nullable Bundle newRestrictions, int userId) { 1066 1067 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 1068 mAppliedUserRestrictions.get(userId)); 1069 1070 // Update base restrictions. 1071 if (newRestrictions != null) { 1072 // If newRestrictions == the current one, it's probably a bug. 1073 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 1074 1075 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 1076 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 1077 != newRestrictions); 1078 1079 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 1080 mBaseUserRestrictions.put(userId, newRestrictions); 1081 scheduleWriteUser(getUserDataNoChecks(userId)); 1082 } 1083 } 1084 1085 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 1086 1087 mCachedEffectiveUserRestrictions.put(userId, effective); 1088 1089 // Apply the new restrictions. 1090 if (DBG) { 1091 debug("Applying user restrictions: userId=" + userId 1092 + " new=" + effective + " prev=" + prevAppliedRestrictions); 1093 } 1094 1095 if (mAppOpsService != null) { // We skip it until system-ready. 1096 final long token = Binder.clearCallingIdentity(); 1097 try { 1098 mAppOpsService.setUserRestrictions(effective, mUserRestriconToken, userId); 1099 } catch (RemoteException e) { 1100 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1101 } finally { 1102 Binder.restoreCallingIdentity(token); 1103 } 1104 } 1105 1106 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1107 1108 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1109 } 1110 1111 private void propagateUserRestrictionsLR(final int userId, 1112 Bundle newRestrictions, Bundle prevRestrictions) { 1113 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1114 // actually, but we still need some kind of synchronization otherwise we might end up 1115 // calling listeners out-of-order, thus "LR". 1116 1117 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1118 return; 1119 } 1120 1121 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1122 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1123 1124 mHandler.post(new Runnable() { 1125 @Override 1126 public void run() { 1127 UserRestrictionsUtils.applyUserRestrictions( 1128 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1129 1130 final UserRestrictionsListener[] listeners; 1131 synchronized (mUserRestrictionsListeners) { 1132 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1133 mUserRestrictionsListeners.toArray(listeners); 1134 } 1135 for (int i = 0; i < listeners.length; i++) { 1136 listeners[i].onUserRestrictionsChanged(userId, 1137 newRestrictionsFinal, prevRestrictionsFinal); 1138 } 1139 } 1140 }); 1141 } 1142 1143 // Package private for the inner class. 1144 void applyUserRestrictionsLR(int userId) { 1145 updateUserRestrictionsInternalLR(null, userId); 1146 } 1147 1148 @GuardedBy("mRestrictionsLock") 1149 // Package private for the inner class. 1150 void applyUserRestrictionsForAllUsersLR() { 1151 if (DBG) { 1152 debug("applyUserRestrictionsForAllUsersLR"); 1153 } 1154 // First, invalidate all cached values. 1155 mCachedEffectiveUserRestrictions.clear(); 1156 1157 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 1158 // it on a handler. 1159 final Runnable r = new Runnable() { 1160 @Override 1161 public void run() { 1162 // Then get the list of running users. 1163 final int[] runningUsers; 1164 try { 1165 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 1166 } catch (RemoteException e) { 1167 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 1168 return; 1169 } 1170 // Then re-calculate the effective restrictions and apply, only for running users. 1171 // It's okay if a new user has started after the getRunningUserIds() call, 1172 // because we'll do the same thing (re-calculate the restrictions and apply) 1173 // when we start a user. 1174 synchronized (mRestrictionsLock) { 1175 for (int i = 0; i < runningUsers.length; i++) { 1176 applyUserRestrictionsLR(runningUsers[i]); 1177 } 1178 } 1179 } 1180 }; 1181 mHandler.post(r); 1182 } 1183 1184 /** 1185 * Check if we've hit the limit of how many users can be created. 1186 */ 1187 private boolean isUserLimitReached() { 1188 int count; 1189 synchronized (mUsersLock) { 1190 count = getAliveUsersExcludingGuestsCountLU(); 1191 } 1192 return count >= UserManager.getMaxSupportedUsers(); 1193 } 1194 1195 @Override 1196 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1197 checkManageUsersPermission("check if more managed profiles can be added."); 1198 if (ActivityManager.isLowRamDeviceStatic()) { 1199 return false; 1200 } 1201 if (!mContext.getPackageManager().hasSystemFeature( 1202 PackageManager.FEATURE_MANAGED_USERS)) { 1203 return false; 1204 } 1205 // Limit number of managed profiles that can be created 1206 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1207 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1208 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1209 return false; 1210 } 1211 synchronized(mUsersLock) { 1212 UserInfo userInfo = getUserInfoLU(userId); 1213 if (!userInfo.canHaveProfile()) { 1214 return false; 1215 } 1216 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1217 - profilesRemovedCount; 1218 // We allow creating a managed profile in the special case where there is only one user. 1219 return usersCountAfterRemoving == 1 1220 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1221 } 1222 } 1223 1224 private int getAliveUsersExcludingGuestsCountLU() { 1225 int aliveUserCount = 0; 1226 final int totalUserCount = mUsers.size(); 1227 // Skip over users being removed 1228 for (int i = 0; i < totalUserCount; i++) { 1229 UserInfo user = mUsers.valueAt(i).info; 1230 if (!mRemovingUserIds.get(user.id) 1231 && !user.isGuest() && !user.partial) { 1232 aliveUserCount++; 1233 } 1234 } 1235 return aliveUserCount; 1236 } 1237 1238 /** 1239 * Enforces that only the system UID or root's UID or apps that have the 1240 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1241 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1242 * permissions can make certain calls to the UserManager. 1243 * 1244 * @param message used as message if SecurityException is thrown 1245 * @throws SecurityException if the caller does not have enough privilege. 1246 */ 1247 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1248 final int uid = Binder.getCallingUid(); 1249 if (uid != Process.SYSTEM_UID && uid != 0 1250 && ActivityManager.checkComponentPermission( 1251 Manifest.permission.MANAGE_USERS, 1252 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1253 && ActivityManager.checkComponentPermission( 1254 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1255 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1256 throw new SecurityException( 1257 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1258 + message); 1259 } 1260 } 1261 1262 /** 1263 * Enforces that only the system UID or root's UID or apps that have the 1264 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1265 * permission can make certain calls to the UserManager. 1266 * 1267 * @param message used as message if SecurityException is thrown 1268 * @throws SecurityException if the caller is not system or root 1269 * @see #hasManageUsersPermission() 1270 */ 1271 private static final void checkManageUsersPermission(String message) { 1272 if (!hasManageUsersPermission()) { 1273 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1274 } 1275 } 1276 1277 /** 1278 * @return whether the calling UID is system UID or root's UID or the calling app has the 1279 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS}. 1280 */ 1281 private static final boolean hasManageUsersPermission() { 1282 final int callingUid = Binder.getCallingUid(); 1283 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1284 || callingUid == Process.ROOT_UID 1285 || ActivityManager.checkComponentPermission( 1286 android.Manifest.permission.MANAGE_USERS, 1287 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1288 } 1289 1290 /** 1291 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1292 * UserManager. 1293 * 1294 * @param message used as message if SecurityException is thrown 1295 * @throws SecurityException if the caller is not system or root 1296 */ 1297 private static void checkSystemOrRoot(String message) { 1298 final int uid = Binder.getCallingUid(); 1299 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1300 throw new SecurityException("Only system may: " + message); 1301 } 1302 } 1303 1304 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1305 try { 1306 File dir = new File(mUsersDir, Integer.toString(info.id)); 1307 File file = new File(dir, USER_PHOTO_FILENAME); 1308 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1309 if (!dir.exists()) { 1310 dir.mkdir(); 1311 FileUtils.setPermissions( 1312 dir.getPath(), 1313 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1314 -1, -1); 1315 } 1316 FileOutputStream os; 1317 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1318 && tmp.renameTo(file) && SELinux.restorecon(file)) { 1319 info.iconPath = file.getAbsolutePath(); 1320 } 1321 try { 1322 os.close(); 1323 } catch (IOException ioe) { 1324 // What the ... ! 1325 } 1326 tmp.delete(); 1327 } catch (FileNotFoundException e) { 1328 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1329 } 1330 } 1331 1332 /** 1333 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1334 * cache it elsewhere. 1335 * @return the array of user ids. 1336 */ 1337 public int[] getUserIds() { 1338 synchronized (mUsersLock) { 1339 return mUserIds; 1340 } 1341 } 1342 1343 private void readUserListLP() { 1344 if (!mUserListFile.exists()) { 1345 fallbackToSingleUserLP(); 1346 return; 1347 } 1348 FileInputStream fis = null; 1349 AtomicFile userListFile = new AtomicFile(mUserListFile); 1350 try { 1351 fis = userListFile.openRead(); 1352 XmlPullParser parser = Xml.newPullParser(); 1353 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1354 int type; 1355 while ((type = parser.next()) != XmlPullParser.START_TAG 1356 && type != XmlPullParser.END_DOCUMENT) { 1357 // Skip 1358 } 1359 1360 if (type != XmlPullParser.START_TAG) { 1361 Slog.e(LOG_TAG, "Unable to read user list"); 1362 fallbackToSingleUserLP(); 1363 return; 1364 } 1365 1366 mNextSerialNumber = -1; 1367 if (parser.getName().equals(TAG_USERS)) { 1368 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1369 if (lastSerialNumber != null) { 1370 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1371 } 1372 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1373 if (versionNumber != null) { 1374 mUserVersion = Integer.parseInt(versionNumber); 1375 } 1376 } 1377 1378 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1379 1380 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1381 if (type == XmlPullParser.START_TAG) { 1382 final String name = parser.getName(); 1383 if (name.equals(TAG_USER)) { 1384 String id = parser.getAttributeValue(null, ATTR_ID); 1385 1386 UserData userData = readUserLP(Integer.parseInt(id)); 1387 1388 if (userData != null) { 1389 synchronized (mUsersLock) { 1390 mUsers.put(userData.info.id, userData); 1391 if (mNextSerialNumber < 0 1392 || mNextSerialNumber <= userData.info.id) { 1393 mNextSerialNumber = userData.info.id + 1; 1394 } 1395 } 1396 } 1397 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1398 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1399 && type != XmlPullParser.END_TAG) { 1400 if (type == XmlPullParser.START_TAG) { 1401 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1402 synchronized (mGuestRestrictions) { 1403 UserRestrictionsUtils 1404 .readRestrictions(parser, mGuestRestrictions); 1405 } 1406 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1407 ) { 1408 UserRestrictionsUtils.readRestrictions(parser, 1409 newDevicePolicyGlobalUserRestrictions); 1410 } 1411 break; 1412 } 1413 } 1414 } 1415 } 1416 } 1417 synchronized (mRestrictionsLock) { 1418 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1419 } 1420 updateUserIds(); 1421 upgradeIfNecessaryLP(); 1422 } catch (IOException | XmlPullParserException e) { 1423 fallbackToSingleUserLP(); 1424 } finally { 1425 IoUtils.closeQuietly(fis); 1426 } 1427 } 1428 1429 /** 1430 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1431 */ 1432 private void upgradeIfNecessaryLP() { 1433 final int originalVersion = mUserVersion; 1434 int userVersion = mUserVersion; 1435 if (userVersion < 1) { 1436 // Assign a proper name for the owner, if not initialized correctly before 1437 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1438 if ("Primary".equals(userData.info.name)) { 1439 userData.info.name = 1440 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1441 scheduleWriteUser(userData); 1442 } 1443 userVersion = 1; 1444 } 1445 1446 if (userVersion < 2) { 1447 // Owner should be marked as initialized 1448 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1449 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1450 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1451 scheduleWriteUser(userData); 1452 } 1453 userVersion = 2; 1454 } 1455 1456 1457 if (userVersion < 4) { 1458 userVersion = 4; 1459 } 1460 1461 if (userVersion < 5) { 1462 initDefaultGuestRestrictions(); 1463 userVersion = 5; 1464 } 1465 1466 if (userVersion < 6) { 1467 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1468 synchronized (mUsersLock) { 1469 for (int i = 0; i < mUsers.size(); i++) { 1470 UserData userData = mUsers.valueAt(i); 1471 // In non-split mode, only user 0 can have restricted profiles 1472 if (!splitSystemUser && userData.info.isRestricted() 1473 && (userData.info.restrictedProfileParentId 1474 == UserInfo.NO_PROFILE_GROUP_ID)) { 1475 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1476 scheduleWriteUser(userData); 1477 } 1478 } 1479 } 1480 userVersion = 6; 1481 } 1482 1483 if (userVersion < USER_VERSION) { 1484 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1485 + USER_VERSION); 1486 } else { 1487 mUserVersion = userVersion; 1488 1489 if (originalVersion < mUserVersion) { 1490 writeUserListLP(); 1491 } 1492 } 1493 } 1494 1495 private void fallbackToSingleUserLP() { 1496 int flags = UserInfo.FLAG_INITIALIZED; 1497 // In split system user mode, the admin and primary flags are assigned to the first human 1498 // user. 1499 if (!UserManager.isSplitSystemUser()) { 1500 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1501 } 1502 // Create the system user 1503 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, null, null, flags); 1504 UserData userData = new UserData(); 1505 userData.info = system; 1506 synchronized (mUsersLock) { 1507 mUsers.put(system.id, userData); 1508 } 1509 mNextSerialNumber = MIN_USER_ID; 1510 mUserVersion = USER_VERSION; 1511 1512 Bundle restrictions = new Bundle(); 1513 synchronized (mRestrictionsLock) { 1514 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1515 } 1516 1517 updateUserIds(); 1518 initDefaultGuestRestrictions(); 1519 1520 writeUserLP(userData); 1521 writeUserListLP(); 1522 } 1523 1524 private String getOwnerName() { 1525 return mContext.getResources().getString(com.android.internal.R.string.owner_name); 1526 } 1527 1528 private void scheduleWriteUser(UserData UserData) { 1529 if (DBG) { 1530 debug("scheduleWriteUser"); 1531 } 1532 // No need to wrap it within a lock -- worst case, we'll just post the same message 1533 // twice. 1534 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1535 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1536 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1537 } 1538 } 1539 1540 /* 1541 * Writes the user file in this format: 1542 * 1543 * <user flags="20039023" id="0"> 1544 * <name>Primary</name> 1545 * </user> 1546 */ 1547 private void writeUserLP(UserData userData) { 1548 if (DBG) { 1549 debug("writeUserLP " + userData); 1550 } 1551 FileOutputStream fos = null; 1552 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1553 try { 1554 fos = userFile.startWrite(); 1555 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1556 1557 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1558 final XmlSerializer serializer = new FastXmlSerializer(); 1559 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1560 serializer.startDocument(null, true); 1561 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1562 1563 final UserInfo userInfo = userData.info; 1564 serializer.startTag(null, TAG_USER); 1565 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1566 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1567 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1568 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1569 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1570 Long.toString(userInfo.lastLoggedInTime)); 1571 if (userInfo.lastLoggedInFingerprint != null) { 1572 serializer.attribute(null, ATTR_LAST_LOGGED_IN_FINGERPRINT, 1573 userInfo.lastLoggedInFingerprint); 1574 } 1575 if (userInfo.iconPath != null) { 1576 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1577 } 1578 if (userInfo.partial) { 1579 serializer.attribute(null, ATTR_PARTIAL, "true"); 1580 } 1581 if (userInfo.guestToRemove) { 1582 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1583 } 1584 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1585 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1586 Integer.toString(userInfo.profileGroupId)); 1587 } 1588 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1589 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1590 Integer.toString(userInfo.restrictedProfileParentId)); 1591 } 1592 // Write seed data 1593 if (userData.persistSeedData) { 1594 if (userData.seedAccountName != null) { 1595 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 1596 } 1597 if (userData.seedAccountType != null) { 1598 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 1599 } 1600 } 1601 if (userInfo.name != null) { 1602 serializer.startTag(null, TAG_NAME); 1603 serializer.text(userInfo.name); 1604 serializer.endTag(null, TAG_NAME); 1605 } 1606 synchronized (mRestrictionsLock) { 1607 UserRestrictionsUtils.writeRestrictions(serializer, 1608 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1609 UserRestrictionsUtils.writeRestrictions(serializer, 1610 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1611 TAG_DEVICE_POLICY_RESTRICTIONS); 1612 } 1613 1614 if (userData.account != null) { 1615 serializer.startTag(null, TAG_ACCOUNT); 1616 serializer.text(userData.account); 1617 serializer.endTag(null, TAG_ACCOUNT); 1618 } 1619 1620 if (userData.persistSeedData && userData.seedAccountOptions != null) { 1621 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1622 userData.seedAccountOptions.saveToXml(serializer); 1623 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1624 } 1625 serializer.endTag(null, TAG_USER); 1626 1627 serializer.endDocument(); 1628 userFile.finishWrite(fos); 1629 } catch (Exception ioe) { 1630 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id, ioe); 1631 userFile.failWrite(fos); 1632 } 1633 } 1634 1635 /* 1636 * Writes the user list file in this format: 1637 * 1638 * <users nextSerialNumber="3"> 1639 * <user id="0"></user> 1640 * <user id="2"></user> 1641 * </users> 1642 */ 1643 private void writeUserListLP() { 1644 if (DBG) { 1645 debug("writeUserList"); 1646 } 1647 FileOutputStream fos = null; 1648 AtomicFile userListFile = new AtomicFile(mUserListFile); 1649 try { 1650 fos = userListFile.startWrite(); 1651 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1652 1653 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1654 final XmlSerializer serializer = new FastXmlSerializer(); 1655 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1656 serializer.startDocument(null, true); 1657 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1658 1659 serializer.startTag(null, TAG_USERS); 1660 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1661 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1662 1663 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1664 synchronized (mGuestRestrictions) { 1665 UserRestrictionsUtils 1666 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1667 } 1668 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1669 synchronized (mRestrictionsLock) { 1670 UserRestrictionsUtils.writeRestrictions(serializer, 1671 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1672 } 1673 int[] userIdsToWrite; 1674 synchronized (mUsersLock) { 1675 userIdsToWrite = new int[mUsers.size()]; 1676 for (int i = 0; i < userIdsToWrite.length; i++) { 1677 UserInfo user = mUsers.valueAt(i).info; 1678 userIdsToWrite[i] = user.id; 1679 } 1680 } 1681 for (int id : userIdsToWrite) { 1682 serializer.startTag(null, TAG_USER); 1683 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1684 serializer.endTag(null, TAG_USER); 1685 } 1686 1687 serializer.endTag(null, TAG_USERS); 1688 1689 serializer.endDocument(); 1690 userListFile.finishWrite(fos); 1691 } catch (Exception e) { 1692 userListFile.failWrite(fos); 1693 Slog.e(LOG_TAG, "Error writing user list"); 1694 } 1695 } 1696 1697 private UserData readUserLP(int id) { 1698 int flags = 0; 1699 int serialNumber = id; 1700 String name = null; 1701 String account = null; 1702 String iconPath = null; 1703 long creationTime = 0L; 1704 long lastLoggedInTime = 0L; 1705 String lastLoggedInFingerprint = null; 1706 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 1707 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 1708 boolean partial = false; 1709 boolean guestToRemove = false; 1710 boolean persistSeedData = false; 1711 String seedAccountName = null; 1712 String seedAccountType = null; 1713 PersistableBundle seedAccountOptions = null; 1714 Bundle baseRestrictions = new Bundle(); 1715 Bundle localRestrictions = new Bundle(); 1716 1717 FileInputStream fis = null; 1718 try { 1719 AtomicFile userFile = 1720 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 1721 fis = userFile.openRead(); 1722 XmlPullParser parser = Xml.newPullParser(); 1723 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1724 int type; 1725 while ((type = parser.next()) != XmlPullParser.START_TAG 1726 && type != XmlPullParser.END_DOCUMENT) { 1727 // Skip 1728 } 1729 1730 if (type != XmlPullParser.START_TAG) { 1731 Slog.e(LOG_TAG, "Unable to read user " + id); 1732 return null; 1733 } 1734 1735 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 1736 int storedId = readIntAttribute(parser, ATTR_ID, -1); 1737 if (storedId != id) { 1738 Slog.e(LOG_TAG, "User id does not match the file name"); 1739 return null; 1740 } 1741 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 1742 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 1743 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 1744 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 1745 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 1746 lastLoggedInFingerprint = parser.getAttributeValue(null, 1747 ATTR_LAST_LOGGED_IN_FINGERPRINT); 1748 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 1749 UserInfo.NO_PROFILE_GROUP_ID); 1750 restrictedProfileParentId = readIntAttribute(parser, 1751 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 1752 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 1753 if ("true".equals(valueString)) { 1754 partial = true; 1755 } 1756 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 1757 if ("true".equals(valueString)) { 1758 guestToRemove = true; 1759 } 1760 1761 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 1762 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 1763 if (seedAccountName != null || seedAccountType != null) { 1764 persistSeedData = true; 1765 } 1766 1767 int outerDepth = parser.getDepth(); 1768 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1769 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1770 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1771 continue; 1772 } 1773 String tag = parser.getName(); 1774 if (TAG_NAME.equals(tag)) { 1775 type = parser.next(); 1776 if (type == XmlPullParser.TEXT) { 1777 name = parser.getText(); 1778 } 1779 } else if (TAG_RESTRICTIONS.equals(tag)) { 1780 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 1781 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 1782 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 1783 } else if (TAG_ACCOUNT.equals(tag)) { 1784 type = parser.next(); 1785 if (type == XmlPullParser.TEXT) { 1786 account = parser.getText(); 1787 } 1788 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 1789 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 1790 persistSeedData = true; 1791 } 1792 } 1793 } 1794 1795 // Create the UserInfo object that gets passed around 1796 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 1797 userInfo.serialNumber = serialNumber; 1798 userInfo.creationTime = creationTime; 1799 userInfo.lastLoggedInTime = lastLoggedInTime; 1800 userInfo.lastLoggedInFingerprint = lastLoggedInFingerprint; 1801 userInfo.partial = partial; 1802 userInfo.guestToRemove = guestToRemove; 1803 userInfo.profileGroupId = profileGroupId; 1804 userInfo.restrictedProfileParentId = restrictedProfileParentId; 1805 1806 // Create the UserData object that's internal to this class 1807 UserData userData = new UserData(); 1808 userData.info = userInfo; 1809 userData.account = account; 1810 userData.seedAccountName = seedAccountName; 1811 userData.seedAccountType = seedAccountType; 1812 userData.persistSeedData = persistSeedData; 1813 userData.seedAccountOptions = seedAccountOptions; 1814 1815 synchronized (mRestrictionsLock) { 1816 mBaseUserRestrictions.put(id, baseRestrictions); 1817 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 1818 } 1819 return userData; 1820 } catch (IOException ioe) { 1821 } catch (XmlPullParserException pe) { 1822 } finally { 1823 if (fis != null) { 1824 try { 1825 fis.close(); 1826 } catch (IOException e) { 1827 } 1828 } 1829 } 1830 return null; 1831 } 1832 1833 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1834 String valueString = parser.getAttributeValue(null, attr); 1835 if (valueString == null) return defaultValue; 1836 try { 1837 return Integer.parseInt(valueString); 1838 } catch (NumberFormatException nfe) { 1839 return defaultValue; 1840 } 1841 } 1842 1843 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1844 String valueString = parser.getAttributeValue(null, attr); 1845 if (valueString == null) return defaultValue; 1846 try { 1847 return Long.parseLong(valueString); 1848 } catch (NumberFormatException nfe) { 1849 return defaultValue; 1850 } 1851 } 1852 1853 /** 1854 * Removes the app restrictions file for a specific package and user id, if it exists. 1855 */ 1856 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1857 synchronized (mPackagesLock) { 1858 File dir = Environment.getUserSystemDirectory(userId); 1859 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1860 if (resFile.exists()) { 1861 resFile.delete(); 1862 } 1863 } 1864 } 1865 1866 @Override 1867 public UserInfo createProfileForUser(String name, int flags, int userId) { 1868 checkManageUsersPermission("Only the system can create users"); 1869 return createUserInternal(name, flags, userId); 1870 } 1871 1872 @Override 1873 public UserInfo createUser(String name, int flags) { 1874 checkManageUsersPermission("Only the system can create users"); 1875 return createUserInternal(name, flags, UserHandle.USER_NULL); 1876 } 1877 1878 private UserInfo createUserInternal(String name, int flags, int parentId) { 1879 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 1880 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1881 return null; 1882 } 1883 return createUserInternalUnchecked(name, flags, parentId); 1884 } 1885 1886 private UserInfo createUserInternalUnchecked(String name, int flags, int parentId) { 1887 if (ActivityManager.isLowRamDeviceStatic()) { 1888 return null; 1889 } 1890 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1891 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 1892 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 1893 final long ident = Binder.clearCallingIdentity(); 1894 UserInfo userInfo; 1895 UserData userData; 1896 final int userId; 1897 try { 1898 synchronized (mPackagesLock) { 1899 UserData parent = null; 1900 if (parentId != UserHandle.USER_NULL) { 1901 synchronized (mUsersLock) { 1902 parent = getUserDataLU(parentId); 1903 } 1904 if (parent == null) return null; 1905 } 1906 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 1907 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 1908 return null; 1909 } 1910 if (!isGuest && !isManagedProfile && isUserLimitReached()) { 1911 // If we're not adding a guest user or a managed profile and the limit has 1912 // been reached, cannot add a user. 1913 return null; 1914 } 1915 // If we're adding a guest and there already exists one, bail. 1916 if (isGuest && findCurrentGuestUser() != null) { 1917 return null; 1918 } 1919 // In legacy mode, restricted profile's parent can only be the owner user 1920 if (isRestricted && !UserManager.isSplitSystemUser() 1921 && (parentId != UserHandle.USER_SYSTEM)) { 1922 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 1923 return null; 1924 } 1925 if (isRestricted && UserManager.isSplitSystemUser()) { 1926 if (parent == null) { 1927 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 1928 + "specified"); 1929 return null; 1930 } 1931 if (!parent.info.canHaveProfile()) { 1932 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 1933 + "created for the specified parent user id " + parentId); 1934 return null; 1935 } 1936 } 1937 if (!UserManager.isSplitSystemUser() && (flags & UserInfo.FLAG_EPHEMERAL) != 0) { 1938 Log.e(LOG_TAG, 1939 "Ephemeral users are supported on split-system-user systems only."); 1940 return null; 1941 } 1942 // In split system user mode, we assign the first human user the primary flag. 1943 // And if there is no device owner, we also assign the admin flag to primary user. 1944 if (UserManager.isSplitSystemUser() 1945 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 1946 flags |= UserInfo.FLAG_PRIMARY; 1947 synchronized (mUsersLock) { 1948 if (!mIsDeviceManaged) { 1949 flags |= UserInfo.FLAG_ADMIN; 1950 } 1951 } 1952 } 1953 1954 userId = getNextAvailableId(); 1955 Environment.getUserSystemDirectory(userId).mkdirs(); 1956 boolean ephemeralGuests = Resources.getSystem() 1957 .getBoolean(com.android.internal.R.bool.config_guestUserEphemeral); 1958 1959 synchronized (mUsersLock) { 1960 // Add ephemeral flag to guests/users if required. Also inherit it from parent. 1961 if ((isGuest && ephemeralGuests) || mForceEphemeralUsers 1962 || (parent != null && parent.info.isEphemeral())) { 1963 flags |= UserInfo.FLAG_EPHEMERAL; 1964 } 1965 1966 userInfo = new UserInfo(userId, name, null, flags); 1967 userInfo.serialNumber = mNextSerialNumber++; 1968 long now = System.currentTimeMillis(); 1969 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1970 userInfo.partial = true; 1971 userInfo.lastLoggedInFingerprint = Build.FINGERPRINT; 1972 userData = new UserData(); 1973 userData.info = userInfo; 1974 mUsers.put(userId, userData); 1975 } 1976 writeUserLP(userData); 1977 writeUserListLP(); 1978 if (parent != null) { 1979 if (isManagedProfile) { 1980 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1981 parent.info.profileGroupId = parent.info.id; 1982 writeUserLP(parent); 1983 } 1984 userInfo.profileGroupId = parent.info.profileGroupId; 1985 } else if (isRestricted) { 1986 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 1987 parent.info.restrictedProfileParentId = parent.info.id; 1988 writeUserLP(parent); 1989 } 1990 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 1991 } 1992 } 1993 } 1994 final StorageManager storage = mContext.getSystemService(StorageManager.class); 1995 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 1996 prepareUserStorage(userId, userInfo.serialNumber, 1997 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 1998 mPm.createNewUser(userId); 1999 userInfo.partial = false; 2000 synchronized (mPackagesLock) { 2001 writeUserLP(userData); 2002 } 2003 updateUserIds(); 2004 Bundle restrictions = new Bundle(); 2005 if (isGuest) { 2006 synchronized (mGuestRestrictions) { 2007 restrictions.putAll(mGuestRestrictions); 2008 } 2009 } 2010 synchronized (mRestrictionsLock) { 2011 mBaseUserRestrictions.append(userId, restrictions); 2012 } 2013 mPm.newUserCreated(userId); 2014 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 2015 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 2016 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 2017 android.Manifest.permission.MANAGE_USERS); 2018 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 2019 } finally { 2020 Binder.restoreCallingIdentity(ident); 2021 } 2022 return userInfo; 2023 } 2024 2025 /** 2026 * @hide 2027 */ 2028 @Override 2029 public UserInfo createRestrictedProfile(String name, int parentUserId) { 2030 checkManageUsersPermission("setupRestrictedProfile"); 2031 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 2032 if (user == null) { 2033 return null; 2034 } 2035 long identity = Binder.clearCallingIdentity(); 2036 try { 2037 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 2038 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 2039 // the putIntForUser() will fail. 2040 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 2041 android.provider.Settings.Secure.LOCATION_MODE, 2042 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 2043 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 2044 } finally { 2045 Binder.restoreCallingIdentity(identity); 2046 } 2047 return user; 2048 } 2049 2050 /** 2051 * Find the current guest user. If the Guest user is partial, 2052 * then do not include it in the results as it is about to die. 2053 */ 2054 private UserInfo findCurrentGuestUser() { 2055 synchronized (mUsersLock) { 2056 final int size = mUsers.size(); 2057 for (int i = 0; i < size; i++) { 2058 final UserInfo user = mUsers.valueAt(i).info; 2059 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 2060 return user; 2061 } 2062 } 2063 } 2064 return null; 2065 } 2066 2067 /** 2068 * Mark this guest user for deletion to allow us to create another guest 2069 * and switch to that user before actually removing this guest. 2070 * @param userHandle the userid of the current guest 2071 * @return whether the user could be marked for deletion 2072 */ 2073 @Override 2074 public boolean markGuestForDeletion(int userHandle) { 2075 checkManageUsersPermission("Only the system can remove users"); 2076 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2077 UserManager.DISALLOW_REMOVE_USER, false)) { 2078 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2079 return false; 2080 } 2081 2082 long ident = Binder.clearCallingIdentity(); 2083 try { 2084 final UserData userData; 2085 synchronized (mPackagesLock) { 2086 synchronized (mUsersLock) { 2087 userData = mUsers.get(userHandle); 2088 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2089 return false; 2090 } 2091 } 2092 if (!userData.info.isGuest()) { 2093 return false; 2094 } 2095 // We set this to a guest user that is to be removed. This is a temporary state 2096 // where we are allowed to add new Guest users, even if this one is still not 2097 // removed. This user will still show up in getUserInfo() calls. 2098 // If we don't get around to removing this Guest user, it will be purged on next 2099 // startup. 2100 userData.info.guestToRemove = true; 2101 // Mark it as disabled, so that it isn't returned any more when 2102 // profiles are queried. 2103 userData.info.flags |= UserInfo.FLAG_DISABLED; 2104 writeUserLP(userData); 2105 } 2106 } finally { 2107 Binder.restoreCallingIdentity(ident); 2108 } 2109 return true; 2110 } 2111 2112 /** 2113 * Removes a user and all data directories created for that user. This method should be called 2114 * after the user's processes have been terminated. 2115 * @param userHandle the user's id 2116 */ 2117 @Override 2118 public boolean removeUser(int userHandle) { 2119 checkManageUsersPermission("Only the system can remove users"); 2120 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2121 UserManager.DISALLOW_REMOVE_USER, false)) { 2122 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2123 return false; 2124 } 2125 2126 long ident = Binder.clearCallingIdentity(); 2127 try { 2128 final UserData userData; 2129 int currentUser = ActivityManager.getCurrentUser(); 2130 if (currentUser == userHandle) { 2131 Log.w(LOG_TAG, "Current user cannot be removed"); 2132 return false; 2133 } 2134 synchronized (mPackagesLock) { 2135 synchronized (mUsersLock) { 2136 userData = mUsers.get(userHandle); 2137 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2138 return false; 2139 } 2140 2141 // We remember deleted user IDs to prevent them from being 2142 // reused during the current boot; they can still be reused 2143 // after a reboot. 2144 mRemovingUserIds.put(userHandle, true); 2145 } 2146 2147 try { 2148 mAppOpsService.removeUser(userHandle); 2149 } catch (RemoteException e) { 2150 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2151 } 2152 // Set this to a partially created user, so that the user will be purged 2153 // on next startup, in case the runtime stops now before stopping and 2154 // removing the user completely. 2155 userData.info.partial = true; 2156 // Mark it as disabled, so that it isn't returned any more when 2157 // profiles are queried. 2158 userData.info.flags |= UserInfo.FLAG_DISABLED; 2159 writeUserLP(userData); 2160 } 2161 2162 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2163 && userData.info.isManagedProfile()) { 2164 // Send broadcast to notify system that the user removed was a 2165 // managed user. 2166 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2167 } 2168 2169 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2170 int res; 2171 try { 2172 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 2173 new IStopUserCallback.Stub() { 2174 @Override 2175 public void userStopped(int userId) { 2176 finishRemoveUser(userId); 2177 } 2178 @Override 2179 public void userStopAborted(int userId) { 2180 } 2181 }); 2182 } catch (RemoteException e) { 2183 return false; 2184 } 2185 return res == ActivityManager.USER_OP_SUCCESS; 2186 } finally { 2187 Binder.restoreCallingIdentity(ident); 2188 } 2189 } 2190 2191 void finishRemoveUser(final int userHandle) { 2192 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2193 // Let other services shutdown any activity and clean up their state before completely 2194 // wiping the user's system directory and removing from the user list 2195 long ident = Binder.clearCallingIdentity(); 2196 try { 2197 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2198 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2199 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2200 android.Manifest.permission.MANAGE_USERS, 2201 2202 new BroadcastReceiver() { 2203 @Override 2204 public void onReceive(Context context, Intent intent) { 2205 if (DBG) { 2206 Slog.i(LOG_TAG, 2207 "USER_REMOVED broadcast sent, cleaning up user data " 2208 + userHandle); 2209 } 2210 new Thread() { 2211 @Override 2212 public void run() { 2213 // Clean up any ActivityManager state 2214 LocalServices.getService(ActivityManagerInternal.class) 2215 .onUserRemoved(userHandle); 2216 removeUserState(userHandle); 2217 } 2218 }.start(); 2219 } 2220 }, 2221 2222 null, Activity.RESULT_OK, null, null); 2223 } finally { 2224 Binder.restoreCallingIdentity(ident); 2225 } 2226 } 2227 2228 private void removeUserState(final int userHandle) { 2229 try { 2230 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2231 } catch (IllegalStateException e) { 2232 // This may be simply because the user was partially created. 2233 Slog.i(LOG_TAG, 2234 "Destroying key for user " + userHandle + " failed, continuing anyway", e); 2235 } 2236 // Cleanup package manager settings 2237 mPm.cleanUpUser(this, userHandle); 2238 2239 // Remove this user from the list 2240 synchronized (mUsersLock) { 2241 mUsers.remove(userHandle); 2242 mIsUserManaged.delete(userHandle); 2243 } 2244 synchronized (mRestrictionsLock) { 2245 mBaseUserRestrictions.remove(userHandle); 2246 mAppliedUserRestrictions.remove(userHandle); 2247 mCachedEffectiveUserRestrictions.remove(userHandle); 2248 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2249 } 2250 // Update the user list 2251 synchronized (mPackagesLock) { 2252 writeUserListLP(); 2253 } 2254 // Remove user file 2255 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2256 userFile.delete(); 2257 updateUserIds(); 2258 File userDir = Environment.getUserSystemDirectory(userHandle); 2259 File renamedUserDir = Environment.getUserSystemDirectory(UserHandle.USER_NULL - userHandle); 2260 if (userDir.renameTo(renamedUserDir)) { 2261 removeDirectoryRecursive(renamedUserDir); 2262 } else { 2263 removeDirectoryRecursive(userDir); 2264 } 2265 } 2266 2267 private void removeDirectoryRecursive(File parent) { 2268 if (parent.isDirectory()) { 2269 String[] files = parent.list(); 2270 for (String filename : files) { 2271 File child = new File(parent, filename); 2272 removeDirectoryRecursive(child); 2273 } 2274 } 2275 parent.delete(); 2276 } 2277 2278 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2279 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2280 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2281 Intent.FLAG_RECEIVER_FOREGROUND); 2282 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2283 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2284 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2285 } 2286 2287 @Override 2288 public Bundle getApplicationRestrictions(String packageName) { 2289 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2290 } 2291 2292 @Override 2293 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2294 if (UserHandle.getCallingUserId() != userId 2295 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2296 checkSystemOrRoot("get application restrictions for other users/apps"); 2297 } 2298 synchronized (mPackagesLock) { 2299 // Read the restrictions from XML 2300 return readApplicationRestrictionsLP(packageName, userId); 2301 } 2302 } 2303 2304 @Override 2305 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2306 int userId) { 2307 checkSystemOrRoot("set application restrictions"); 2308 synchronized (mPackagesLock) { 2309 if (restrictions == null || restrictions.isEmpty()) { 2310 cleanAppRestrictionsForPackage(packageName, userId); 2311 } else { 2312 restrictions.setDefusable(true); 2313 // Write the restrictions to XML 2314 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2315 } 2316 } 2317 2318 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2319 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2320 changeIntent.setPackage(packageName); 2321 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2322 mContext.sendBroadcastAsUser(changeIntent, UserHandle.of(userId)); 2323 } 2324 2325 private int getUidForPackage(String packageName) { 2326 long ident = Binder.clearCallingIdentity(); 2327 try { 2328 return mContext.getPackageManager().getApplicationInfo(packageName, 2329 PackageManager.MATCH_UNINSTALLED_PACKAGES).uid; 2330 } catch (NameNotFoundException nnfe) { 2331 return -1; 2332 } finally { 2333 Binder.restoreCallingIdentity(ident); 2334 } 2335 } 2336 2337 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2338 AtomicFile restrictionsFile = 2339 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2340 packageToRestrictionsFileName(packageName))); 2341 return readApplicationRestrictionsLP(restrictionsFile); 2342 } 2343 2344 @VisibleForTesting 2345 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2346 final Bundle restrictions = new Bundle(); 2347 final ArrayList<String> values = new ArrayList<>(); 2348 if (!restrictionsFile.getBaseFile().exists()) { 2349 return restrictions; 2350 } 2351 2352 FileInputStream fis = null; 2353 try { 2354 fis = restrictionsFile.openRead(); 2355 XmlPullParser parser = Xml.newPullParser(); 2356 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2357 XmlUtils.nextElement(parser); 2358 if (parser.getEventType() != XmlPullParser.START_TAG) { 2359 Slog.e(LOG_TAG, "Unable to read restrictions file " 2360 + restrictionsFile.getBaseFile()); 2361 return restrictions; 2362 } 2363 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2364 readEntry(restrictions, values, parser); 2365 } 2366 } catch (IOException|XmlPullParserException e) { 2367 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2368 } finally { 2369 IoUtils.closeQuietly(fis); 2370 } 2371 return restrictions; 2372 } 2373 2374 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2375 XmlPullParser parser) throws XmlPullParserException, IOException { 2376 int type = parser.getEventType(); 2377 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2378 String key = parser.getAttributeValue(null, ATTR_KEY); 2379 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2380 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2381 if (multiple != null) { 2382 values.clear(); 2383 int count = Integer.parseInt(multiple); 2384 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2385 if (type == XmlPullParser.START_TAG 2386 && parser.getName().equals(TAG_VALUE)) { 2387 values.add(parser.nextText().trim()); 2388 count--; 2389 } 2390 } 2391 String [] valueStrings = new String[values.size()]; 2392 values.toArray(valueStrings); 2393 restrictions.putStringArray(key, valueStrings); 2394 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2395 restrictions.putBundle(key, readBundleEntry(parser, values)); 2396 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2397 final int outerDepth = parser.getDepth(); 2398 ArrayList<Bundle> bundleList = new ArrayList<>(); 2399 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2400 Bundle childBundle = readBundleEntry(parser, values); 2401 bundleList.add(childBundle); 2402 } 2403 restrictions.putParcelableArray(key, 2404 bundleList.toArray(new Bundle[bundleList.size()])); 2405 } else { 2406 String value = parser.nextText().trim(); 2407 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2408 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2409 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2410 restrictions.putInt(key, Integer.parseInt(value)); 2411 } else { 2412 restrictions.putString(key, value); 2413 } 2414 } 2415 } 2416 } 2417 2418 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2419 throws IOException, XmlPullParserException { 2420 Bundle childBundle = new Bundle(); 2421 final int outerDepth = parser.getDepth(); 2422 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2423 readEntry(childBundle, values, parser); 2424 } 2425 return childBundle; 2426 } 2427 2428 private void writeApplicationRestrictionsLP(String packageName, 2429 Bundle restrictions, int userId) { 2430 AtomicFile restrictionsFile = new AtomicFile( 2431 new File(Environment.getUserSystemDirectory(userId), 2432 packageToRestrictionsFileName(packageName))); 2433 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2434 } 2435 2436 @VisibleForTesting 2437 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2438 FileOutputStream fos = null; 2439 try { 2440 fos = restrictionsFile.startWrite(); 2441 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2442 2443 final XmlSerializer serializer = new FastXmlSerializer(); 2444 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2445 serializer.startDocument(null, true); 2446 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2447 2448 serializer.startTag(null, TAG_RESTRICTIONS); 2449 writeBundle(restrictions, serializer); 2450 serializer.endTag(null, TAG_RESTRICTIONS); 2451 2452 serializer.endDocument(); 2453 restrictionsFile.finishWrite(fos); 2454 } catch (Exception e) { 2455 restrictionsFile.failWrite(fos); 2456 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2457 } 2458 } 2459 2460 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2461 throws IOException { 2462 for (String key : restrictions.keySet()) { 2463 Object value = restrictions.get(key); 2464 serializer.startTag(null, TAG_ENTRY); 2465 serializer.attribute(null, ATTR_KEY, key); 2466 2467 if (value instanceof Boolean) { 2468 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2469 serializer.text(value.toString()); 2470 } else if (value instanceof Integer) { 2471 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2472 serializer.text(value.toString()); 2473 } else if (value == null || value instanceof String) { 2474 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2475 serializer.text(value != null ? (String) value : ""); 2476 } else if (value instanceof Bundle) { 2477 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2478 writeBundle((Bundle) value, serializer); 2479 } else if (value instanceof Parcelable[]) { 2480 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2481 Parcelable[] array = (Parcelable[]) value; 2482 for (Parcelable parcelable : array) { 2483 if (!(parcelable instanceof Bundle)) { 2484 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2485 } 2486 serializer.startTag(null, TAG_ENTRY); 2487 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2488 writeBundle((Bundle) parcelable, serializer); 2489 serializer.endTag(null, TAG_ENTRY); 2490 } 2491 } else { 2492 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2493 String[] values = (String[]) value; 2494 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2495 for (String choice : values) { 2496 serializer.startTag(null, TAG_VALUE); 2497 serializer.text(choice != null ? choice : ""); 2498 serializer.endTag(null, TAG_VALUE); 2499 } 2500 } 2501 serializer.endTag(null, TAG_ENTRY); 2502 } 2503 } 2504 2505 @Override 2506 public int getUserSerialNumber(int userHandle) { 2507 synchronized (mUsersLock) { 2508 if (!exists(userHandle)) return -1; 2509 return getUserInfoLU(userHandle).serialNumber; 2510 } 2511 } 2512 2513 @Override 2514 public int getUserHandle(int userSerialNumber) { 2515 synchronized (mUsersLock) { 2516 for (int userId : mUserIds) { 2517 UserInfo info = getUserInfoLU(userId); 2518 if (info != null && info.serialNumber == userSerialNumber) return userId; 2519 } 2520 // Not found 2521 return -1; 2522 } 2523 } 2524 2525 @Override 2526 public long getUserCreationTime(int userHandle) { 2527 int callingUserId = UserHandle.getCallingUserId(); 2528 UserInfo userInfo = null; 2529 synchronized (mUsersLock) { 2530 if (callingUserId == userHandle) { 2531 userInfo = getUserInfoLU(userHandle); 2532 } else { 2533 UserInfo parent = getProfileParentLU(userHandle); 2534 if (parent != null && parent.id == callingUserId) { 2535 userInfo = getUserInfoLU(userHandle); 2536 } 2537 } 2538 } 2539 if (userInfo == null) { 2540 throw new SecurityException("userHandle can only be the calling user or a managed " 2541 + "profile associated with this user"); 2542 } 2543 return userInfo.creationTime; 2544 } 2545 2546 /** 2547 * Caches the list of user ids in an array, adjusting the array size when necessary. 2548 */ 2549 private void updateUserIds() { 2550 int num = 0; 2551 synchronized (mUsersLock) { 2552 final int userSize = mUsers.size(); 2553 for (int i = 0; i < userSize; i++) { 2554 if (!mUsers.valueAt(i).info.partial) { 2555 num++; 2556 } 2557 } 2558 final int[] newUsers = new int[num]; 2559 int n = 0; 2560 for (int i = 0; i < userSize; i++) { 2561 if (!mUsers.valueAt(i).info.partial) { 2562 newUsers[n++] = mUsers.keyAt(i); 2563 } 2564 } 2565 mUserIds = newUsers; 2566 } 2567 } 2568 2569 /** 2570 * Prepare storage areas for given user on all mounted devices. 2571 */ 2572 private void prepareUserStorage(int userId, int userSerial, int flags) { 2573 final StorageManager storage = mContext.getSystemService(StorageManager.class); 2574 for (VolumeInfo vol : storage.getWritablePrivateVolumes()) { 2575 final String volumeUuid = vol.getFsUuid(); 2576 storage.prepareUserStorage(volumeUuid, userId, userSerial, flags); 2577 } 2578 } 2579 2580 /** 2581 * Called right before a user is started. This gives us a chance to prepare 2582 * app storage and apply any user restrictions. 2583 */ 2584 public void onBeforeStartUser(int userId) { 2585 final int userSerial = getUserSerialNumber(userId); 2586 prepareUserStorage(userId, userSerial, StorageManager.FLAG_STORAGE_DE); 2587 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_DE); 2588 2589 if (userId != UserHandle.USER_SYSTEM) { 2590 synchronized (mRestrictionsLock) { 2591 applyUserRestrictionsLR(userId); 2592 } 2593 } 2594 } 2595 2596 /** 2597 * Called right before a user is unlocked. This gives us a chance to prepare 2598 * app storage. 2599 */ 2600 public void onBeforeUnlockUser(@UserIdInt int userId) { 2601 final int userSerial = getUserSerialNumber(userId); 2602 prepareUserStorage(userId, userSerial, StorageManager.FLAG_STORAGE_CE); 2603 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_CE); 2604 } 2605 2606 /** 2607 * Make a note of the last started time of a user and do some cleanup. 2608 * @param userId the user that was just foregrounded 2609 */ 2610 public void onUserLoggedIn(@UserIdInt int userId) { 2611 UserData userData = getUserDataNoChecks(userId); 2612 if (userData == null || userData.info.partial) { 2613 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2614 return; 2615 } 2616 2617 final long now = System.currentTimeMillis(); 2618 if (now > EPOCH_PLUS_30_YEARS) { 2619 userData.info.lastLoggedInTime = now; 2620 } 2621 userData.info.lastLoggedInFingerprint = Build.FINGERPRINT; 2622 scheduleWriteUser(userData); 2623 } 2624 2625 /** 2626 * Returns the next available user id, filling in any holes in the ids. 2627 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2628 * for data and battery stats collection, or unexpected cross-talk. 2629 */ 2630 private int getNextAvailableId() { 2631 synchronized (mUsersLock) { 2632 int i = MIN_USER_ID; 2633 while (i < MAX_USER_ID) { 2634 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2635 return i; 2636 } 2637 i++; 2638 } 2639 } 2640 throw new IllegalStateException("No user id available!"); 2641 } 2642 2643 private String packageToRestrictionsFileName(String packageName) { 2644 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2645 } 2646 2647 /** 2648 * Enforce that serial number stored in user directory inode matches the 2649 * given expected value. Gracefully sets the serial number if currently 2650 * undefined. 2651 * 2652 * @throws IOException when problem extracting serial number, or serial 2653 * number is mismatched. 2654 */ 2655 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2656 final int foundSerial = getSerialNumber(file); 2657 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 2658 2659 if (foundSerial == -1) { 2660 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 2661 try { 2662 setSerialNumber(file, serialNumber); 2663 } catch (IOException e) { 2664 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 2665 } 2666 2667 } else if (foundSerial != serialNumber) { 2668 throw new IOException("Found serial number " + foundSerial 2669 + " doesn't match expected " + serialNumber); 2670 } 2671 } 2672 2673 /** 2674 * Set serial number stored in user directory inode. 2675 * 2676 * @throws IOException if serial number was already set 2677 */ 2678 private static void setSerialNumber(File file, int serialNumber) 2679 throws IOException { 2680 try { 2681 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 2682 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 2683 } catch (ErrnoException e) { 2684 throw e.rethrowAsIOException(); 2685 } 2686 } 2687 2688 /** 2689 * Return serial number stored in user directory inode. 2690 * 2691 * @return parsed serial number, or -1 if not set 2692 */ 2693 private static int getSerialNumber(File file) throws IOException { 2694 try { 2695 final byte[] buf = new byte[256]; 2696 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 2697 final String serial = new String(buf, 0, len); 2698 try { 2699 return Integer.parseInt(serial); 2700 } catch (NumberFormatException e) { 2701 throw new IOException("Bad serial number: " + serial); 2702 } 2703 } catch (ErrnoException e) { 2704 if (e.errno == OsConstants.ENODATA) { 2705 return -1; 2706 } else { 2707 throw e.rethrowAsIOException(); 2708 } 2709 } 2710 } 2711 2712 @Override 2713 public void setSeedAccountData(int userId, String accountName, String accountType, 2714 PersistableBundle accountOptions, boolean persist) { 2715 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 2716 synchronized (mPackagesLock) { 2717 final UserData userData; 2718 synchronized (mUsersLock) { 2719 userData = getUserDataLU(userId); 2720 if (userData == null) { 2721 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 2722 return; 2723 } 2724 userData.seedAccountName = accountName; 2725 userData.seedAccountType = accountType; 2726 userData.seedAccountOptions = accountOptions; 2727 userData.persistSeedData = persist; 2728 } 2729 if (persist) { 2730 writeUserLP(userData); 2731 } 2732 } 2733 } 2734 2735 @Override 2736 public String getSeedAccountName() throws RemoteException { 2737 checkManageUsersPermission("Cannot get seed account information"); 2738 synchronized (mUsersLock) { 2739 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2740 return userData.seedAccountName; 2741 } 2742 } 2743 2744 @Override 2745 public String getSeedAccountType() throws RemoteException { 2746 checkManageUsersPermission("Cannot get seed account information"); 2747 synchronized (mUsersLock) { 2748 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2749 return userData.seedAccountType; 2750 } 2751 } 2752 2753 @Override 2754 public PersistableBundle getSeedAccountOptions() throws RemoteException { 2755 checkManageUsersPermission("Cannot get seed account information"); 2756 synchronized (mUsersLock) { 2757 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2758 return userData.seedAccountOptions; 2759 } 2760 } 2761 2762 @Override 2763 public void clearSeedAccountData() throws RemoteException { 2764 checkManageUsersPermission("Cannot clear seed account information"); 2765 synchronized (mPackagesLock) { 2766 UserData userData; 2767 synchronized (mUsersLock) { 2768 userData = getUserDataLU(UserHandle.getCallingUserId()); 2769 if (userData == null) return; 2770 userData.clearSeedAccountData(); 2771 } 2772 writeUserLP(userData); 2773 } 2774 } 2775 2776 @Override 2777 public boolean someUserHasSeedAccount(String accountName, String accountType) 2778 throws RemoteException { 2779 checkManageUsersPermission("Cannot check seed account information"); 2780 synchronized (mUsersLock) { 2781 final int userSize = mUsers.size(); 2782 for (int i = 0; i < userSize; i++) { 2783 final UserData data = mUsers.valueAt(i); 2784 if (data.info.isInitialized()) continue; 2785 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 2786 continue; 2787 } 2788 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 2789 continue; 2790 } 2791 return true; 2792 } 2793 } 2794 return false; 2795 } 2796 2797 @Override 2798 public void onShellCommand(FileDescriptor in, FileDescriptor out, 2799 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 2800 (new Shell()).exec(this, in, out, err, args, resultReceiver); 2801 } 2802 2803 int onShellCommand(Shell shell, String cmd) { 2804 if (cmd == null) { 2805 return shell.handleDefaultCommands(cmd); 2806 } 2807 2808 final PrintWriter pw = shell.getOutPrintWriter(); 2809 try { 2810 switch(cmd) { 2811 case "list": 2812 return runList(pw); 2813 } 2814 } catch (RemoteException e) { 2815 pw.println("Remote exception: " + e); 2816 } 2817 return -1; 2818 } 2819 2820 private int runList(PrintWriter pw) throws RemoteException { 2821 final IActivityManager am = ActivityManagerNative.getDefault(); 2822 final List<UserInfo> users = getUsers(false); 2823 if (users == null) { 2824 pw.println("Error: couldn't get users"); 2825 return 1; 2826 } else { 2827 pw.println("Users:"); 2828 for (int i = 0; i < users.size(); i++) { 2829 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 2830 pw.println("\t" + users.get(i).toString() + running); 2831 } 2832 return 0; 2833 } 2834 } 2835 2836 @Override 2837 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2838 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2839 != PackageManager.PERMISSION_GRANTED) { 2840 pw.println("Permission Denial: can't dump UserManager from from pid=" 2841 + Binder.getCallingPid() 2842 + ", uid=" + Binder.getCallingUid() 2843 + " without permission " 2844 + android.Manifest.permission.DUMP); 2845 return; 2846 } 2847 2848 long now = System.currentTimeMillis(); 2849 StringBuilder sb = new StringBuilder(); 2850 synchronized (mPackagesLock) { 2851 synchronized (mUsersLock) { 2852 pw.println("Users:"); 2853 for (int i = 0; i < mUsers.size(); i++) { 2854 UserData userData = mUsers.valueAt(i); 2855 if (userData == null) { 2856 continue; 2857 } 2858 UserInfo userInfo = userData.info; 2859 final int userId = userInfo.id; 2860 pw.print(" "); pw.print(userInfo); 2861 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 2862 if (mRemovingUserIds.get(userId)) { 2863 pw.print(" <removing> "); 2864 } 2865 if (userInfo.partial) { 2866 pw.print(" <partial>"); 2867 } 2868 pw.println(); 2869 pw.print(" Created: "); 2870 if (userInfo.creationTime == 0) { 2871 pw.println("<unknown>"); 2872 } else { 2873 sb.setLength(0); 2874 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 2875 sb.append(" ago"); 2876 pw.println(sb); 2877 } 2878 pw.print(" Last logged in: "); 2879 if (userInfo.lastLoggedInTime == 0) { 2880 pw.println("<unknown>"); 2881 } else { 2882 sb.setLength(0); 2883 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 2884 sb.append(" ago"); 2885 pw.println(sb); 2886 } 2887 pw.print(" Last logged in fingerprint: "); 2888 pw.println(userInfo.lastLoggedInFingerprint); 2889 pw.print(" Has profile owner: "); 2890 pw.println(mIsUserManaged.get(userId)); 2891 pw.println(" Restrictions:"); 2892 synchronized (mRestrictionsLock) { 2893 UserRestrictionsUtils.dumpRestrictions( 2894 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 2895 pw.println(" Device policy local restrictions:"); 2896 UserRestrictionsUtils.dumpRestrictions( 2897 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 2898 pw.println(" Effective restrictions:"); 2899 UserRestrictionsUtils.dumpRestrictions( 2900 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 2901 } 2902 2903 if (userData.account != null) { 2904 pw.print(" Account name: " + userData.account); 2905 pw.println(); 2906 } 2907 2908 if (userData.seedAccountName != null) { 2909 pw.print(" Seed account name: " + userData.seedAccountName); 2910 pw.println(); 2911 if (userData.seedAccountType != null) { 2912 pw.print(" account type: " + userData.seedAccountType); 2913 pw.println(); 2914 } 2915 if (userData.seedAccountOptions != null) { 2916 pw.print(" account options exist"); 2917 pw.println(); 2918 } 2919 } 2920 } 2921 } 2922 pw.println(); 2923 pw.println(" Device policy global restrictions:"); 2924 synchronized (mRestrictionsLock) { 2925 UserRestrictionsUtils 2926 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 2927 } 2928 pw.println(); 2929 pw.println(" Guest restrictions:"); 2930 synchronized (mGuestRestrictions) { 2931 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 2932 } 2933 synchronized (mUsersLock) { 2934 pw.println(); 2935 pw.println(" Device managed: " + mIsDeviceManaged); 2936 } 2937 // Dump some capabilities 2938 pw.println(); 2939 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 2940 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 2941 pw.println(" All guests ephemeral: " + Resources.getSystem().getBoolean( 2942 com.android.internal.R.bool.config_guestUserEphemeral)); 2943 } 2944 } 2945 2946 final class MainHandler extends Handler { 2947 2948 @Override 2949 public void handleMessage(Message msg) { 2950 switch (msg.what) { 2951 case WRITE_USER_MSG: 2952 removeMessages(WRITE_USER_MSG, msg.obj); 2953 synchronized (mPackagesLock) { 2954 int userId = ((UserData) msg.obj).info.id; 2955 UserData userData = getUserDataNoChecks(userId); 2956 if (userData != null) { 2957 writeUserLP(userData); 2958 } 2959 } 2960 } 2961 } 2962 } 2963 2964 /** 2965 * @param userId 2966 * @return whether the user has been initialized yet 2967 */ 2968 boolean isInitialized(int userId) { 2969 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 2970 } 2971 2972 private class LocalService extends UserManagerInternal { 2973 @Override 2974 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 2975 @Nullable Bundle globalRestrictions) { 2976 UserManagerService.this.setDevicePolicyUserRestrictionsInner(userId, localRestrictions, 2977 globalRestrictions); 2978 } 2979 2980 @Override 2981 public Bundle getBaseUserRestrictions(int userId) { 2982 synchronized (mRestrictionsLock) { 2983 return mBaseUserRestrictions.get(userId); 2984 } 2985 } 2986 2987 @Override 2988 public void setBaseUserRestrictionsByDpmsForMigration( 2989 int userId, Bundle baseRestrictions) { 2990 synchronized (mRestrictionsLock) { 2991 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 2992 invalidateEffectiveUserRestrictionsLR(userId); 2993 } 2994 2995 final UserData userData = getUserDataNoChecks(userId); 2996 synchronized (mPackagesLock) { 2997 if (userData != null) { 2998 writeUserLP(userData); 2999 } else { 3000 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 3001 } 3002 } 3003 } 3004 3005 @Override 3006 public boolean getUserRestriction(int userId, String key) { 3007 return getUserRestrictions(userId).getBoolean(key); 3008 } 3009 3010 @Override 3011 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 3012 synchronized (mUserRestrictionsListeners) { 3013 mUserRestrictionsListeners.add(listener); 3014 } 3015 } 3016 3017 @Override 3018 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 3019 synchronized (mUserRestrictionsListeners) { 3020 mUserRestrictionsListeners.remove(listener); 3021 } 3022 } 3023 3024 @Override 3025 public void setDeviceManaged(boolean isManaged) { 3026 synchronized (mUsersLock) { 3027 mIsDeviceManaged = isManaged; 3028 } 3029 } 3030 3031 @Override 3032 public void setUserManaged(int userId, boolean isManaged) { 3033 synchronized (mUsersLock) { 3034 mIsUserManaged.put(userId, isManaged); 3035 } 3036 } 3037 3038 @Override 3039 public void setUserIcon(int userId, Bitmap bitmap) { 3040 long ident = Binder.clearCallingIdentity(); 3041 try { 3042 synchronized (mPackagesLock) { 3043 UserData userData = getUserDataNoChecks(userId); 3044 if (userData == null || userData.info.partial) { 3045 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 3046 return; 3047 } 3048 writeBitmapLP(userData.info, bitmap); 3049 writeUserLP(userData); 3050 } 3051 sendUserInfoChangedBroadcast(userId); 3052 } finally { 3053 Binder.restoreCallingIdentity(ident); 3054 } 3055 } 3056 3057 @Override 3058 public void setForceEphemeralUsers(boolean forceEphemeralUsers) { 3059 synchronized (mUsersLock) { 3060 mForceEphemeralUsers = forceEphemeralUsers; 3061 } 3062 } 3063 3064 @Override 3065 public void removeAllUsers() { 3066 if (UserHandle.USER_SYSTEM == ActivityManager.getCurrentUser()) { 3067 // Remove the non-system users straight away. 3068 removeNonSystemUsers(); 3069 } else { 3070 // Switch to the system user first and then remove the other users. 3071 BroadcastReceiver userSwitchedReceiver = new BroadcastReceiver() { 3072 @Override 3073 public void onReceive(Context context, Intent intent) { 3074 int userId = 3075 intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3076 if (userId != UserHandle.USER_SYSTEM) { 3077 return; 3078 } 3079 mContext.unregisterReceiver(this); 3080 removeNonSystemUsers(); 3081 } 3082 }; 3083 IntentFilter userSwitchedFilter = new IntentFilter(); 3084 userSwitchedFilter.addAction(Intent.ACTION_USER_SWITCHED); 3085 mContext.registerReceiver( 3086 userSwitchedReceiver, userSwitchedFilter, null, mHandler); 3087 3088 // Switch to the system user. 3089 ActivityManager am = 3090 (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 3091 am.switchUser(UserHandle.USER_SYSTEM); 3092 } 3093 } 3094 3095 @Override 3096 public void onEphemeralUserStop(int userId) { 3097 synchronized (mUsersLock) { 3098 UserInfo userInfo = getUserInfoLU(userId); 3099 if (userInfo != null && userInfo.isEphemeral()) { 3100 // Do not allow switching back to the ephemeral user again as the user is going 3101 // to be deleted. 3102 userInfo.flags |= UserInfo.FLAG_DISABLED; 3103 if (userInfo.isGuest()) { 3104 // Indicate that the guest will be deleted after it stops. 3105 userInfo.guestToRemove = true; 3106 } 3107 } 3108 } 3109 } 3110 3111 @Override 3112 public UserInfo createUserEvenWhenDisallowed(String name, int flags) { 3113 UserInfo user = createUserInternalUnchecked(name, flags, UserHandle.USER_NULL); 3114 // Keep this in sync with UserManager.createUser 3115 if (user != null && !user.isAdmin()) { 3116 setUserRestriction(UserManager.DISALLOW_SMS, true, user.id); 3117 setUserRestriction(UserManager.DISALLOW_OUTGOING_CALLS, true, user.id); 3118 } 3119 return user; 3120 } 3121 } 3122 3123 /* Remove all the users except of the system one. */ 3124 private void removeNonSystemUsers() { 3125 ArrayList<UserInfo> usersToRemove = new ArrayList<>(); 3126 synchronized (mUsersLock) { 3127 final int userSize = mUsers.size(); 3128 for (int i = 0; i < userSize; i++) { 3129 UserInfo ui = mUsers.valueAt(i).info; 3130 if (ui.id != UserHandle.USER_SYSTEM) { 3131 usersToRemove.add(ui); 3132 } 3133 } 3134 } 3135 for (UserInfo ui: usersToRemove) { 3136 removeUser(ui.id); 3137 } 3138 } 3139 3140 private class Shell extends ShellCommand { 3141 @Override 3142 public int onCommand(String cmd) { 3143 return onShellCommand(this, cmd); 3144 } 3145 3146 @Override 3147 public void onHelp() { 3148 final PrintWriter pw = getOutPrintWriter(); 3149 pw.println("User manager (user) commands:"); 3150 pw.println(" help"); 3151 pw.println(" Print this help text."); 3152 pw.println(""); 3153 pw.println(" list"); 3154 pw.println(" Prints all users on the system."); 3155 } 3156 } 3157 3158 private static void debug(String message) { 3159 Log.d(LOG_TAG, message + 3160 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 3161 } 3162} 3163