UserManagerService.java revision fcf1e55821b694df3b8434f40aa3b6d3c3e7ea50
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.system.ErrnoException; 64import android.system.Os; 65import android.system.OsConstants; 66import android.util.AtomicFile; 67import android.util.IntArray; 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 @Override 487 public int[] getProfileIds(int userId, boolean enabledOnly) { 488 if (userId != UserHandle.getCallingUserId()) { 489 checkManageUsersPermission("getting profiles related to user " + userId); 490 } 491 final long ident = Binder.clearCallingIdentity(); 492 try { 493 synchronized (mUsersLock) { 494 return getProfileIdsLU(userId, enabledOnly).toArray(); 495 } 496 } finally { 497 Binder.restoreCallingIdentity(ident); 498 } 499 } 500 501 /** Assume permissions already checked and caller's identity cleared */ 502 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly, boolean fullInfo) { 503 IntArray profileIds = getProfileIdsLU(userId, enabledOnly); 504 ArrayList<UserInfo> users = new ArrayList<>(profileIds.size()); 505 for (int i = 0; i < profileIds.size(); i++) { 506 int profileId = profileIds.get(i); 507 UserInfo userInfo = mUsers.get(profileId).info; 508 // If full info is not required - clear PII data to prevent 3P apps from reading it 509 if (!fullInfo) { 510 userInfo = new UserInfo(userInfo); 511 userInfo.name = null; 512 userInfo.iconPath = null; 513 } else { 514 userInfo = userWithName(userInfo); 515 } 516 users.add(userInfo); 517 } 518 return users; 519 } 520 521 /** 522 * Assume permissions already checked and caller's identity cleared 523 */ 524 private IntArray getProfileIdsLU(int userId, boolean enabledOnly) { 525 UserInfo user = getUserInfoLU(userId); 526 IntArray result = new IntArray(mUsers.size()); 527 if (user == null) { 528 // Probably a dying user 529 return result; 530 } 531 final int userSize = mUsers.size(); 532 for (int i = 0; i < userSize; i++) { 533 UserInfo profile = mUsers.valueAt(i).info; 534 if (!isProfileOf(user, profile)) { 535 continue; 536 } 537 if (enabledOnly && !profile.isEnabled()) { 538 continue; 539 } 540 if (mRemovingUserIds.get(profile.id)) { 541 continue; 542 } 543 if (profile.partial) { 544 continue; 545 } 546 result.add(profile.id); 547 } 548 return result; 549 } 550 551 @Override 552 public int getCredentialOwnerProfile(int userHandle) { 553 checkManageUsersPermission("get the credential owner"); 554 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 555 synchronized (mUsersLock) { 556 UserInfo profileParent = getProfileParentLU(userHandle); 557 if (profileParent != null) { 558 return profileParent.id; 559 } 560 } 561 } 562 563 return userHandle; 564 } 565 566 @Override 567 public boolean isSameProfileGroup(int userId, int otherUserId) { 568 if (userId == otherUserId) return true; 569 checkManageUsersPermission("check if in the same profile group"); 570 synchronized (mPackagesLock) { 571 return isSameProfileGroupLP(userId, otherUserId); 572 } 573 } 574 575 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 576 synchronized (mUsersLock) { 577 UserInfo userInfo = getUserInfoLU(userId); 578 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 579 return false; 580 } 581 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 582 if (otherUserInfo == null 583 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 584 return false; 585 } 586 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 587 } 588 } 589 590 @Override 591 public UserInfo getProfileParent(int userHandle) { 592 checkManageUsersPermission("get the profile parent"); 593 synchronized (mUsersLock) { 594 return getProfileParentLU(userHandle); 595 } 596 } 597 598 private UserInfo getProfileParentLU(int userHandle) { 599 UserInfo profile = getUserInfoLU(userHandle); 600 if (profile == null) { 601 return null; 602 } 603 int parentUserId = profile.profileGroupId; 604 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 605 return null; 606 } else { 607 return getUserInfoLU(parentUserId); 608 } 609 } 610 611 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 612 return user.id == profile.id || 613 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 614 && user.profileGroupId == profile.profileGroupId); 615 } 616 617 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 618 UserHandle parentHandle, boolean inQuietMode) { 619 Intent intent = new Intent(); 620 if (inQuietMode) { 621 intent.setAction(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE); 622 } else { 623 intent.setAction(Intent.ACTION_MANAGED_PROFILE_AVAILABLE); 624 } 625 intent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 626 intent.putExtra(Intent.EXTRA_USER, profileHandle); 627 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 628 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 629 mContext.sendBroadcastAsUser(intent, parentHandle); 630 631 //TODO: remove once Launcher3 is updated. 632 Intent oldIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_AVAILABILITY_CHANGED); 633 oldIntent.putExtra(Intent.EXTRA_QUIET_MODE, inQuietMode); 634 oldIntent.putExtra(Intent.EXTRA_USER, profileHandle); 635 oldIntent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 636 oldIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 637 mContext.sendBroadcastAsUser(oldIntent, parentHandle); 638 639 } 640 641 @Override 642 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 643 checkManageUsersPermission("silence profile"); 644 boolean changed = false; 645 UserInfo profile, parent; 646 synchronized (mPackagesLock) { 647 synchronized (mUsersLock) { 648 profile = getUserInfoLU(userHandle); 649 parent = getProfileParentLU(userHandle); 650 651 } 652 if (profile == null || !profile.isManagedProfile()) { 653 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 654 } 655 if (profile.isQuietModeEnabled() != enableQuietMode) { 656 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 657 writeUserLP(getUserDataLU(profile.id)); 658 changed = true; 659 } 660 } 661 if (changed) { 662 long identity = Binder.clearCallingIdentity(); 663 try { 664 if (enableQuietMode) { 665 ActivityManagerNative.getDefault().stopUser(userHandle, /* force */true, null); 666 } else { 667 ActivityManagerNative.getDefault().startUserInBackground(userHandle); 668 } 669 } catch (RemoteException e) { 670 Slog.e(LOG_TAG, "fail to start/stop user for quiet mode", e); 671 } finally { 672 Binder.restoreCallingIdentity(identity); 673 } 674 675 broadcastProfileAvailabilityChanges(profile.getUserHandle(), parent.getUserHandle(), 676 enableQuietMode); 677 } 678 } 679 680 @Override 681 public boolean isQuietModeEnabled(int userHandle) { 682 synchronized (mPackagesLock) { 683 UserInfo info; 684 synchronized (mUsersLock) { 685 info = getUserInfoLU(userHandle); 686 } 687 if (info == null || !info.isManagedProfile()) { 688 return false; 689 } 690 return info.isQuietModeEnabled(); 691 } 692 } 693 694 @Override 695 public void setUserEnabled(int userId) { 696 checkManageUsersPermission("enable user"); 697 synchronized (mPackagesLock) { 698 UserInfo info; 699 synchronized (mUsersLock) { 700 info = getUserInfoLU(userId); 701 } 702 if (info != null && !info.isEnabled()) { 703 info.flags ^= UserInfo.FLAG_DISABLED; 704 writeUserLP(getUserDataLU(info.id)); 705 } 706 } 707 } 708 709 @Override 710 public UserInfo getUserInfo(int userId) { 711 checkManageUsersPermission("query user"); 712 synchronized (mUsersLock) { 713 return userWithName(getUserInfoLU(userId)); 714 } 715 } 716 717 /** 718 * Returns a UserInfo object with the name filled in, for Owner, or the original 719 * if the name is already set. 720 */ 721 private UserInfo userWithName(UserInfo orig) { 722 if (orig != null && orig.name == null && orig.id == UserHandle.USER_SYSTEM) { 723 UserInfo withName = new UserInfo(orig); 724 withName.name = getOwnerName(); 725 return withName; 726 } else { 727 return orig; 728 } 729 } 730 731 @Override 732 public boolean isManagedProfile(int userId) { 733 int callingUserId = UserHandle.getCallingUserId(); 734 if (callingUserId != userId && !hasManageUsersPermission()) { 735 synchronized (mPackagesLock) { 736 if (!isSameProfileGroupLP(callingUserId, userId)) { 737 throw new SecurityException( 738 "You need MANAGE_USERS permission to: check if specified user a " + 739 "managed profile outside your profile group"); 740 } 741 } 742 } 743 synchronized (mUsersLock) { 744 UserInfo userInfo = getUserInfoLU(userId); 745 return userInfo != null && userInfo.isManagedProfile(); 746 } 747 } 748 749 @Override 750 public boolean isRestricted() { 751 synchronized (mUsersLock) { 752 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 753 } 754 } 755 756 @Override 757 public boolean canHaveRestrictedProfile(int userId) { 758 checkManageUsersPermission("canHaveRestrictedProfile"); 759 synchronized (mUsersLock) { 760 final UserInfo userInfo = getUserInfoLU(userId); 761 if (userInfo == null || !userInfo.canHaveProfile()) { 762 return false; 763 } 764 if (!userInfo.isAdmin()) { 765 return false; 766 } 767 // restricted profile can be created if there is no DO set and the admin user has no PO; 768 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 769 } 770 } 771 772 /* 773 * Should be locked on mUsers before calling this. 774 */ 775 private UserInfo getUserInfoLU(int userId) { 776 final UserData userData = mUsers.get(userId); 777 // If it is partial and not in the process of being removed, return as unknown user. 778 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 779 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 780 return null; 781 } 782 return userData != null ? userData.info : null; 783 } 784 785 private UserData getUserDataLU(int userId) { 786 final UserData userData = mUsers.get(userId); 787 // If it is partial and not in the process of being removed, return as unknown user. 788 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 789 return null; 790 } 791 return userData; 792 } 793 794 /** 795 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 796 * <p>No permissions checking or any addition checks are made</p> 797 */ 798 private UserInfo getUserInfoNoChecks(int userId) { 799 synchronized (mUsersLock) { 800 final UserData userData = mUsers.get(userId); 801 return userData != null ? userData.info : null; 802 } 803 } 804 805 /** 806 * Obtains {@link #mUsersLock} and return UserData from mUsers. 807 * <p>No permissions checking or any addition checks are made</p> 808 */ 809 private UserData getUserDataNoChecks(int userId) { 810 synchronized (mUsersLock) { 811 return mUsers.get(userId); 812 } 813 } 814 815 /** Called by PackageManagerService */ 816 public boolean exists(int userId) { 817 return getUserInfoNoChecks(userId) != null; 818 } 819 820 @Override 821 public void setUserName(int userId, String name) { 822 checkManageUsersPermission("rename users"); 823 boolean changed = false; 824 synchronized (mPackagesLock) { 825 UserData userData = getUserDataNoChecks(userId); 826 if (userData == null || userData.info.partial) { 827 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 828 return; 829 } 830 if (name != null && !name.equals(userData.info.name)) { 831 userData.info.name = name; 832 writeUserLP(userData); 833 changed = true; 834 } 835 } 836 if (changed) { 837 sendUserInfoChangedBroadcast(userId); 838 } 839 } 840 841 @Override 842 public void setUserIcon(int userId, Bitmap bitmap) { 843 checkManageUsersPermission("update users"); 844 if (hasUserRestriction(UserManager.DISALLOW_SET_USER_ICON, userId)) { 845 Log.w(LOG_TAG, "Cannot set user icon. DISALLOW_SET_USER_ICON is enabled."); 846 return; 847 } 848 mLocalService.setUserIcon(userId, bitmap); 849 } 850 851 852 853 private void sendUserInfoChangedBroadcast(int userId) { 854 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 855 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 856 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 857 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 858 } 859 860 @Override 861 public ParcelFileDescriptor getUserIcon(int targetUserId) { 862 String iconPath; 863 synchronized (mPackagesLock) { 864 UserInfo targetUserInfo = getUserInfoNoChecks(targetUserId); 865 if (targetUserInfo == null || targetUserInfo.partial) { 866 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + targetUserId); 867 return null; 868 } 869 870 final int callingUserId = UserHandle.getCallingUserId(); 871 final int callingGroupId = getUserInfoNoChecks(callingUserId).profileGroupId; 872 final int targetGroupId = targetUserInfo.profileGroupId; 873 final boolean sameGroup = (callingGroupId != UserInfo.NO_PROFILE_GROUP_ID 874 && callingGroupId == targetGroupId); 875 if ((callingUserId != targetUserId) && !sameGroup) { 876 checkManageUsersPermission("get the icon of a user who is not related"); 877 } 878 879 if (targetUserInfo.iconPath == null) { 880 return null; 881 } 882 iconPath = targetUserInfo.iconPath; 883 } 884 885 try { 886 return ParcelFileDescriptor.open( 887 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 888 } catch (FileNotFoundException e) { 889 Log.e(LOG_TAG, "Couldn't find icon file", e); 890 } 891 return null; 892 } 893 894 public void makeInitialized(int userId) { 895 checkManageUsersPermission("makeInitialized"); 896 boolean scheduleWriteUser = false; 897 UserData userData; 898 synchronized (mUsersLock) { 899 userData = mUsers.get(userId); 900 if (userData == null || userData.info.partial) { 901 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 902 return; 903 } 904 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 905 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 906 scheduleWriteUser = true; 907 } 908 } 909 if (scheduleWriteUser) { 910 scheduleWriteUser(userData); 911 } 912 } 913 914 /** 915 * If default guest restrictions haven't been initialized yet, add the basic 916 * restrictions. 917 */ 918 private void initDefaultGuestRestrictions() { 919 synchronized (mGuestRestrictions) { 920 if (mGuestRestrictions.isEmpty()) { 921 mGuestRestrictions.putBoolean(UserManager.DISALLOW_CONFIG_WIFI, true); 922 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 923 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 924 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 925 } 926 } 927 } 928 929 @Override 930 public Bundle getDefaultGuestRestrictions() { 931 checkManageUsersPermission("getDefaultGuestRestrictions"); 932 synchronized (mGuestRestrictions) { 933 return new Bundle(mGuestRestrictions); 934 } 935 } 936 937 @Override 938 public void setDefaultGuestRestrictions(Bundle restrictions) { 939 checkManageUsersPermission("setDefaultGuestRestrictions"); 940 synchronized (mGuestRestrictions) { 941 mGuestRestrictions.clear(); 942 mGuestRestrictions.putAll(restrictions); 943 } 944 synchronized (mPackagesLock) { 945 writeUserListLP(); 946 } 947 } 948 949 /** 950 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 951 */ 952 void setDevicePolicyUserRestrictionsInner(int userId, @NonNull Bundle local, 953 @Nullable Bundle global) { 954 Preconditions.checkNotNull(local); 955 boolean globalChanged = false; 956 boolean localChanged; 957 synchronized (mRestrictionsLock) { 958 if (global != null) { 959 // Update global. 960 globalChanged = !UserRestrictionsUtils.areEqual( 961 mDevicePolicyGlobalUserRestrictions, global); 962 if (globalChanged) { 963 mDevicePolicyGlobalUserRestrictions = global; 964 } 965 } 966 { 967 // Update local. 968 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 969 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 970 if (localChanged) { 971 mDevicePolicyLocalUserRestrictions.put(userId, local); 972 } 973 } 974 } 975 if (DBG) { 976 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 977 + " global=" + global + (globalChanged ? " (changed)" : "") 978 + " local=" + local + (localChanged ? " (changed)" : "") 979 ); 980 } 981 // Don't call them within the mRestrictionsLock. 982 synchronized (mPackagesLock) { 983 if (localChanged) { 984 writeUserLP(getUserDataNoChecks(userId)); 985 } 986 if (globalChanged) { 987 writeUserListLP(); 988 } 989 } 990 991 synchronized (mRestrictionsLock) { 992 if (globalChanged) { 993 applyUserRestrictionsForAllUsersLR(); 994 } else if (localChanged) { 995 applyUserRestrictionsLR(userId); 996 } 997 } 998 } 999 1000 @GuardedBy("mRestrictionsLock") 1001 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 1002 final Bundle baseRestrictions = 1003 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 1004 final Bundle global = mDevicePolicyGlobalUserRestrictions; 1005 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 1006 1007 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 1008 // Common case first. 1009 return baseRestrictions; 1010 } 1011 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 1012 UserRestrictionsUtils.merge(effective, global); 1013 UserRestrictionsUtils.merge(effective, local); 1014 1015 return effective; 1016 } 1017 1018 @GuardedBy("mRestrictionsLock") 1019 private void invalidateEffectiveUserRestrictionsLR(int userId) { 1020 if (DBG) { 1021 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 1022 } 1023 mCachedEffectiveUserRestrictions.remove(userId); 1024 } 1025 1026 private Bundle getEffectiveUserRestrictions(int userId) { 1027 synchronized (mRestrictionsLock) { 1028 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 1029 if (restrictions == null) { 1030 restrictions = computeEffectiveUserRestrictionsLR(userId); 1031 mCachedEffectiveUserRestrictions.put(userId, restrictions); 1032 } 1033 return restrictions; 1034 } 1035 } 1036 1037 /** @return a specific user restriction that's in effect currently. */ 1038 @Override 1039 public boolean hasUserRestriction(String restrictionKey, int userId) { 1040 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1041 return false; 1042 } 1043 Bundle restrictions = getEffectiveUserRestrictions(userId); 1044 return restrictions != null && restrictions.getBoolean(restrictionKey); 1045 } 1046 1047 /** 1048 * @return UserRestrictions that are in effect currently. This always returns a new 1049 * {@link Bundle}. 1050 */ 1051 @Override 1052 public Bundle getUserRestrictions(int userId) { 1053 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 1054 } 1055 1056 @Override 1057 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 1058 checkManageUsersPermission("hasBaseUserRestriction"); 1059 if (!UserRestrictionsUtils.isValidRestriction(restrictionKey)) { 1060 return false; 1061 } 1062 synchronized (mRestrictionsLock) { 1063 Bundle bundle = mBaseUserRestrictions.get(userId); 1064 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 1065 } 1066 } 1067 1068 @Override 1069 public void setUserRestriction(String key, boolean value, int userId) { 1070 checkManageUsersPermission("setUserRestriction"); 1071 if (!UserRestrictionsUtils.isValidRestriction(key)) { 1072 return; 1073 } 1074 synchronized (mRestrictionsLock) { 1075 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 1076 // a copy. 1077 final Bundle newRestrictions = UserRestrictionsUtils.clone( 1078 mBaseUserRestrictions.get(userId)); 1079 newRestrictions.putBoolean(key, value); 1080 1081 updateUserRestrictionsInternalLR(newRestrictions, userId); 1082 } 1083 } 1084 1085 /** 1086 * Optionally updating user restrictions, calculate the effective user restrictions and also 1087 * propagate to other services and system settings. 1088 * 1089 * @param newRestrictions User restrictions to set. 1090 * If null, will not update user restrictions and only does the propagation. 1091 * @param userId target user ID. 1092 */ 1093 @GuardedBy("mRestrictionsLock") 1094 private void updateUserRestrictionsInternalLR( 1095 @Nullable Bundle newRestrictions, int userId) { 1096 1097 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 1098 mAppliedUserRestrictions.get(userId)); 1099 1100 // Update base restrictions. 1101 if (newRestrictions != null) { 1102 // If newRestrictions == the current one, it's probably a bug. 1103 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 1104 1105 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 1106 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 1107 != newRestrictions); 1108 1109 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 1110 mBaseUserRestrictions.put(userId, newRestrictions); 1111 scheduleWriteUser(getUserDataNoChecks(userId)); 1112 } 1113 } 1114 1115 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 1116 1117 mCachedEffectiveUserRestrictions.put(userId, effective); 1118 1119 // Apply the new restrictions. 1120 if (DBG) { 1121 debug("Applying user restrictions: userId=" + userId 1122 + " new=" + effective + " prev=" + prevAppliedRestrictions); 1123 } 1124 1125 if (mAppOpsService != null) { // We skip it until system-ready. 1126 final long token = Binder.clearCallingIdentity(); 1127 try { 1128 mAppOpsService.setUserRestrictions(effective, mUserRestriconToken, userId); 1129 } catch (RemoteException e) { 1130 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1131 } finally { 1132 Binder.restoreCallingIdentity(token); 1133 } 1134 } 1135 1136 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1137 1138 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1139 } 1140 1141 private void propagateUserRestrictionsLR(final int userId, 1142 Bundle newRestrictions, Bundle prevRestrictions) { 1143 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1144 // actually, but we still need some kind of synchronization otherwise we might end up 1145 // calling listeners out-of-order, thus "LR". 1146 1147 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1148 return; 1149 } 1150 1151 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1152 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1153 1154 mHandler.post(new Runnable() { 1155 @Override 1156 public void run() { 1157 UserRestrictionsUtils.applyUserRestrictions( 1158 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1159 1160 final UserRestrictionsListener[] listeners; 1161 synchronized (mUserRestrictionsListeners) { 1162 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1163 mUserRestrictionsListeners.toArray(listeners); 1164 } 1165 for (int i = 0; i < listeners.length; i++) { 1166 listeners[i].onUserRestrictionsChanged(userId, 1167 newRestrictionsFinal, prevRestrictionsFinal); 1168 } 1169 } 1170 }); 1171 } 1172 1173 // Package private for the inner class. 1174 void applyUserRestrictionsLR(int userId) { 1175 updateUserRestrictionsInternalLR(null, userId); 1176 } 1177 1178 @GuardedBy("mRestrictionsLock") 1179 // Package private for the inner class. 1180 void applyUserRestrictionsForAllUsersLR() { 1181 if (DBG) { 1182 debug("applyUserRestrictionsForAllUsersLR"); 1183 } 1184 // First, invalidate all cached values. 1185 mCachedEffectiveUserRestrictions.clear(); 1186 1187 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 1188 // it on a handler. 1189 final Runnable r = new Runnable() { 1190 @Override 1191 public void run() { 1192 // Then get the list of running users. 1193 final int[] runningUsers; 1194 try { 1195 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 1196 } catch (RemoteException e) { 1197 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 1198 return; 1199 } 1200 // Then re-calculate the effective restrictions and apply, only for running users. 1201 // It's okay if a new user has started after the getRunningUserIds() call, 1202 // because we'll do the same thing (re-calculate the restrictions and apply) 1203 // when we start a user. 1204 synchronized (mRestrictionsLock) { 1205 for (int i = 0; i < runningUsers.length; i++) { 1206 applyUserRestrictionsLR(runningUsers[i]); 1207 } 1208 } 1209 } 1210 }; 1211 mHandler.post(r); 1212 } 1213 1214 /** 1215 * Check if we've hit the limit of how many users can be created. 1216 */ 1217 private boolean isUserLimitReached() { 1218 int count; 1219 synchronized (mUsersLock) { 1220 count = getAliveUsersExcludingGuestsCountLU(); 1221 } 1222 return count >= UserManager.getMaxSupportedUsers(); 1223 } 1224 1225 @Override 1226 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1227 checkManageUsersPermission("check if more managed profiles can be added."); 1228 if (ActivityManager.isLowRamDeviceStatic()) { 1229 return false; 1230 } 1231 if (!mContext.getPackageManager().hasSystemFeature( 1232 PackageManager.FEATURE_MANAGED_USERS)) { 1233 return false; 1234 } 1235 // Limit number of managed profiles that can be created 1236 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1237 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1238 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1239 return false; 1240 } 1241 synchronized(mUsersLock) { 1242 UserInfo userInfo = getUserInfoLU(userId); 1243 if (!userInfo.canHaveProfile()) { 1244 return false; 1245 } 1246 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1247 - profilesRemovedCount; 1248 // We allow creating a managed profile in the special case where there is only one user. 1249 return usersCountAfterRemoving == 1 1250 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1251 } 1252 } 1253 1254 private int getAliveUsersExcludingGuestsCountLU() { 1255 int aliveUserCount = 0; 1256 final int totalUserCount = mUsers.size(); 1257 // Skip over users being removed 1258 for (int i = 0; i < totalUserCount; i++) { 1259 UserInfo user = mUsers.valueAt(i).info; 1260 if (!mRemovingUserIds.get(user.id) 1261 && !user.isGuest() && !user.partial) { 1262 aliveUserCount++; 1263 } 1264 } 1265 return aliveUserCount; 1266 } 1267 1268 /** 1269 * Enforces that only the system UID or root's UID or apps that have the 1270 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1271 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1272 * permissions can make certain calls to the UserManager. 1273 * 1274 * @param message used as message if SecurityException is thrown 1275 * @throws SecurityException if the caller does not have enough privilege. 1276 */ 1277 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1278 final int uid = Binder.getCallingUid(); 1279 if (uid != Process.SYSTEM_UID && uid != 0 1280 && ActivityManager.checkComponentPermission( 1281 Manifest.permission.MANAGE_USERS, 1282 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1283 && ActivityManager.checkComponentPermission( 1284 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1285 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1286 throw new SecurityException( 1287 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1288 + message); 1289 } 1290 } 1291 1292 /** 1293 * Enforces that only the system UID or root's UID or apps that have the 1294 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1295 * permission can make certain calls to the UserManager. 1296 * 1297 * @param message used as message if SecurityException is thrown 1298 * @throws SecurityException if the caller is not system or root 1299 * @see #hasManageUsersPermission() 1300 */ 1301 private static final void checkManageUsersPermission(String message) { 1302 if (!hasManageUsersPermission()) { 1303 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1304 } 1305 } 1306 1307 /** 1308 * @return whether the calling UID is system UID or root's UID or the calling app has the 1309 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS}. 1310 */ 1311 private static final boolean hasManageUsersPermission() { 1312 final int callingUid = Binder.getCallingUid(); 1313 return UserHandle.isSameApp(callingUid, Process.SYSTEM_UID) 1314 || callingUid == Process.ROOT_UID 1315 || ActivityManager.checkComponentPermission( 1316 android.Manifest.permission.MANAGE_USERS, 1317 callingUid, -1, true) == PackageManager.PERMISSION_GRANTED; 1318 } 1319 1320 /** 1321 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1322 * UserManager. 1323 * 1324 * @param message used as message if SecurityException is thrown 1325 * @throws SecurityException if the caller is not system or root 1326 */ 1327 private static void checkSystemOrRoot(String message) { 1328 final int uid = Binder.getCallingUid(); 1329 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1330 throw new SecurityException("Only system may: " + message); 1331 } 1332 } 1333 1334 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1335 try { 1336 File dir = new File(mUsersDir, Integer.toString(info.id)); 1337 File file = new File(dir, USER_PHOTO_FILENAME); 1338 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1339 if (!dir.exists()) { 1340 dir.mkdir(); 1341 FileUtils.setPermissions( 1342 dir.getPath(), 1343 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1344 -1, -1); 1345 } 1346 FileOutputStream os; 1347 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1348 && tmp.renameTo(file) && SELinux.restorecon(file)) { 1349 info.iconPath = file.getAbsolutePath(); 1350 } 1351 try { 1352 os.close(); 1353 } catch (IOException ioe) { 1354 // What the ... ! 1355 } 1356 tmp.delete(); 1357 } catch (FileNotFoundException e) { 1358 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1359 } 1360 } 1361 1362 /** 1363 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1364 * cache it elsewhere. 1365 * @return the array of user ids. 1366 */ 1367 public int[] getUserIds() { 1368 synchronized (mUsersLock) { 1369 return mUserIds; 1370 } 1371 } 1372 1373 private void readUserListLP() { 1374 if (!mUserListFile.exists()) { 1375 fallbackToSingleUserLP(); 1376 return; 1377 } 1378 FileInputStream fis = null; 1379 AtomicFile userListFile = new AtomicFile(mUserListFile); 1380 try { 1381 fis = userListFile.openRead(); 1382 XmlPullParser parser = Xml.newPullParser(); 1383 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1384 int type; 1385 while ((type = parser.next()) != XmlPullParser.START_TAG 1386 && type != XmlPullParser.END_DOCUMENT) { 1387 // Skip 1388 } 1389 1390 if (type != XmlPullParser.START_TAG) { 1391 Slog.e(LOG_TAG, "Unable to read user list"); 1392 fallbackToSingleUserLP(); 1393 return; 1394 } 1395 1396 mNextSerialNumber = -1; 1397 if (parser.getName().equals(TAG_USERS)) { 1398 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1399 if (lastSerialNumber != null) { 1400 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1401 } 1402 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1403 if (versionNumber != null) { 1404 mUserVersion = Integer.parseInt(versionNumber); 1405 } 1406 } 1407 1408 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1409 1410 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1411 if (type == XmlPullParser.START_TAG) { 1412 final String name = parser.getName(); 1413 if (name.equals(TAG_USER)) { 1414 String id = parser.getAttributeValue(null, ATTR_ID); 1415 1416 UserData userData = readUserLP(Integer.parseInt(id)); 1417 1418 if (userData != null) { 1419 synchronized (mUsersLock) { 1420 mUsers.put(userData.info.id, userData); 1421 if (mNextSerialNumber < 0 1422 || mNextSerialNumber <= userData.info.id) { 1423 mNextSerialNumber = userData.info.id + 1; 1424 } 1425 } 1426 } 1427 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1428 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1429 && type != XmlPullParser.END_TAG) { 1430 if (type == XmlPullParser.START_TAG) { 1431 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1432 synchronized (mGuestRestrictions) { 1433 UserRestrictionsUtils 1434 .readRestrictions(parser, mGuestRestrictions); 1435 } 1436 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1437 ) { 1438 UserRestrictionsUtils.readRestrictions(parser, 1439 newDevicePolicyGlobalUserRestrictions); 1440 } 1441 break; 1442 } 1443 } 1444 } 1445 } 1446 } 1447 synchronized (mRestrictionsLock) { 1448 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1449 } 1450 updateUserIds(); 1451 upgradeIfNecessaryLP(); 1452 } catch (IOException | XmlPullParserException e) { 1453 fallbackToSingleUserLP(); 1454 } finally { 1455 IoUtils.closeQuietly(fis); 1456 } 1457 } 1458 1459 /** 1460 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1461 */ 1462 private void upgradeIfNecessaryLP() { 1463 final int originalVersion = mUserVersion; 1464 int userVersion = mUserVersion; 1465 if (userVersion < 1) { 1466 // Assign a proper name for the owner, if not initialized correctly before 1467 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1468 if ("Primary".equals(userData.info.name)) { 1469 userData.info.name = 1470 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1471 scheduleWriteUser(userData); 1472 } 1473 userVersion = 1; 1474 } 1475 1476 if (userVersion < 2) { 1477 // Owner should be marked as initialized 1478 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1479 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1480 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1481 scheduleWriteUser(userData); 1482 } 1483 userVersion = 2; 1484 } 1485 1486 1487 if (userVersion < 4) { 1488 userVersion = 4; 1489 } 1490 1491 if (userVersion < 5) { 1492 initDefaultGuestRestrictions(); 1493 userVersion = 5; 1494 } 1495 1496 if (userVersion < 6) { 1497 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1498 synchronized (mUsersLock) { 1499 for (int i = 0; i < mUsers.size(); i++) { 1500 UserData userData = mUsers.valueAt(i); 1501 // In non-split mode, only user 0 can have restricted profiles 1502 if (!splitSystemUser && userData.info.isRestricted() 1503 && (userData.info.restrictedProfileParentId 1504 == UserInfo.NO_PROFILE_GROUP_ID)) { 1505 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1506 scheduleWriteUser(userData); 1507 } 1508 } 1509 } 1510 userVersion = 6; 1511 } 1512 1513 if (userVersion < USER_VERSION) { 1514 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1515 + USER_VERSION); 1516 } else { 1517 mUserVersion = userVersion; 1518 1519 if (originalVersion < mUserVersion) { 1520 writeUserListLP(); 1521 } 1522 } 1523 } 1524 1525 private void fallbackToSingleUserLP() { 1526 int flags = UserInfo.FLAG_INITIALIZED; 1527 // In split system user mode, the admin and primary flags are assigned to the first human 1528 // user. 1529 if (!UserManager.isSplitSystemUser()) { 1530 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1531 } 1532 // Create the system user 1533 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, null, null, flags); 1534 UserData userData = new UserData(); 1535 userData.info = system; 1536 synchronized (mUsersLock) { 1537 mUsers.put(system.id, userData); 1538 } 1539 mNextSerialNumber = MIN_USER_ID; 1540 mUserVersion = USER_VERSION; 1541 1542 Bundle restrictions = new Bundle(); 1543 synchronized (mRestrictionsLock) { 1544 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1545 } 1546 1547 updateUserIds(); 1548 initDefaultGuestRestrictions(); 1549 1550 writeUserLP(userData); 1551 writeUserListLP(); 1552 } 1553 1554 private String getOwnerName() { 1555 return mContext.getResources().getString(com.android.internal.R.string.owner_name); 1556 } 1557 1558 private void scheduleWriteUser(UserData UserData) { 1559 if (DBG) { 1560 debug("scheduleWriteUser"); 1561 } 1562 // No need to wrap it within a lock -- worst case, we'll just post the same message 1563 // twice. 1564 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1565 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1566 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1567 } 1568 } 1569 1570 /* 1571 * Writes the user file in this format: 1572 * 1573 * <user flags="20039023" id="0"> 1574 * <name>Primary</name> 1575 * </user> 1576 */ 1577 private void writeUserLP(UserData userData) { 1578 if (DBG) { 1579 debug("writeUserLP " + userData); 1580 } 1581 FileOutputStream fos = null; 1582 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1583 try { 1584 fos = userFile.startWrite(); 1585 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1586 1587 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1588 final XmlSerializer serializer = new FastXmlSerializer(); 1589 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1590 serializer.startDocument(null, true); 1591 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1592 1593 final UserInfo userInfo = userData.info; 1594 serializer.startTag(null, TAG_USER); 1595 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1596 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1597 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1598 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1599 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1600 Long.toString(userInfo.lastLoggedInTime)); 1601 if (userInfo.lastLoggedInFingerprint != null) { 1602 serializer.attribute(null, ATTR_LAST_LOGGED_IN_FINGERPRINT, 1603 userInfo.lastLoggedInFingerprint); 1604 } 1605 if (userInfo.iconPath != null) { 1606 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1607 } 1608 if (userInfo.partial) { 1609 serializer.attribute(null, ATTR_PARTIAL, "true"); 1610 } 1611 if (userInfo.guestToRemove) { 1612 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1613 } 1614 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1615 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1616 Integer.toString(userInfo.profileGroupId)); 1617 } 1618 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1619 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1620 Integer.toString(userInfo.restrictedProfileParentId)); 1621 } 1622 // Write seed data 1623 if (userData.persistSeedData) { 1624 if (userData.seedAccountName != null) { 1625 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 1626 } 1627 if (userData.seedAccountType != null) { 1628 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 1629 } 1630 } 1631 if (userInfo.name != null) { 1632 serializer.startTag(null, TAG_NAME); 1633 serializer.text(userInfo.name); 1634 serializer.endTag(null, TAG_NAME); 1635 } 1636 synchronized (mRestrictionsLock) { 1637 UserRestrictionsUtils.writeRestrictions(serializer, 1638 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1639 UserRestrictionsUtils.writeRestrictions(serializer, 1640 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1641 TAG_DEVICE_POLICY_RESTRICTIONS); 1642 } 1643 1644 if (userData.account != null) { 1645 serializer.startTag(null, TAG_ACCOUNT); 1646 serializer.text(userData.account); 1647 serializer.endTag(null, TAG_ACCOUNT); 1648 } 1649 1650 if (userData.persistSeedData && userData.seedAccountOptions != null) { 1651 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1652 userData.seedAccountOptions.saveToXml(serializer); 1653 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1654 } 1655 serializer.endTag(null, TAG_USER); 1656 1657 serializer.endDocument(); 1658 userFile.finishWrite(fos); 1659 } catch (Exception ioe) { 1660 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id, ioe); 1661 userFile.failWrite(fos); 1662 } 1663 } 1664 1665 /* 1666 * Writes the user list file in this format: 1667 * 1668 * <users nextSerialNumber="3"> 1669 * <user id="0"></user> 1670 * <user id="2"></user> 1671 * </users> 1672 */ 1673 private void writeUserListLP() { 1674 if (DBG) { 1675 debug("writeUserList"); 1676 } 1677 FileOutputStream fos = null; 1678 AtomicFile userListFile = new AtomicFile(mUserListFile); 1679 try { 1680 fos = userListFile.startWrite(); 1681 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1682 1683 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1684 final XmlSerializer serializer = new FastXmlSerializer(); 1685 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1686 serializer.startDocument(null, true); 1687 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1688 1689 serializer.startTag(null, TAG_USERS); 1690 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1691 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1692 1693 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1694 synchronized (mGuestRestrictions) { 1695 UserRestrictionsUtils 1696 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1697 } 1698 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1699 synchronized (mRestrictionsLock) { 1700 UserRestrictionsUtils.writeRestrictions(serializer, 1701 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1702 } 1703 int[] userIdsToWrite; 1704 synchronized (mUsersLock) { 1705 userIdsToWrite = new int[mUsers.size()]; 1706 for (int i = 0; i < userIdsToWrite.length; i++) { 1707 UserInfo user = mUsers.valueAt(i).info; 1708 userIdsToWrite[i] = user.id; 1709 } 1710 } 1711 for (int id : userIdsToWrite) { 1712 serializer.startTag(null, TAG_USER); 1713 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1714 serializer.endTag(null, TAG_USER); 1715 } 1716 1717 serializer.endTag(null, TAG_USERS); 1718 1719 serializer.endDocument(); 1720 userListFile.finishWrite(fos); 1721 } catch (Exception e) { 1722 userListFile.failWrite(fos); 1723 Slog.e(LOG_TAG, "Error writing user list"); 1724 } 1725 } 1726 1727 private UserData readUserLP(int id) { 1728 int flags = 0; 1729 int serialNumber = id; 1730 String name = null; 1731 String account = null; 1732 String iconPath = null; 1733 long creationTime = 0L; 1734 long lastLoggedInTime = 0L; 1735 String lastLoggedInFingerprint = null; 1736 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 1737 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 1738 boolean partial = false; 1739 boolean guestToRemove = false; 1740 boolean persistSeedData = false; 1741 String seedAccountName = null; 1742 String seedAccountType = null; 1743 PersistableBundle seedAccountOptions = null; 1744 Bundle baseRestrictions = new Bundle(); 1745 Bundle localRestrictions = new Bundle(); 1746 1747 FileInputStream fis = null; 1748 try { 1749 AtomicFile userFile = 1750 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 1751 fis = userFile.openRead(); 1752 XmlPullParser parser = Xml.newPullParser(); 1753 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1754 int type; 1755 while ((type = parser.next()) != XmlPullParser.START_TAG 1756 && type != XmlPullParser.END_DOCUMENT) { 1757 // Skip 1758 } 1759 1760 if (type != XmlPullParser.START_TAG) { 1761 Slog.e(LOG_TAG, "Unable to read user " + id); 1762 return null; 1763 } 1764 1765 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 1766 int storedId = readIntAttribute(parser, ATTR_ID, -1); 1767 if (storedId != id) { 1768 Slog.e(LOG_TAG, "User id does not match the file name"); 1769 return null; 1770 } 1771 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 1772 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 1773 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 1774 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 1775 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 1776 lastLoggedInFingerprint = parser.getAttributeValue(null, 1777 ATTR_LAST_LOGGED_IN_FINGERPRINT); 1778 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 1779 UserInfo.NO_PROFILE_GROUP_ID); 1780 restrictedProfileParentId = readIntAttribute(parser, 1781 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 1782 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 1783 if ("true".equals(valueString)) { 1784 partial = true; 1785 } 1786 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 1787 if ("true".equals(valueString)) { 1788 guestToRemove = true; 1789 } 1790 1791 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 1792 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 1793 if (seedAccountName != null || seedAccountType != null) { 1794 persistSeedData = true; 1795 } 1796 1797 int outerDepth = parser.getDepth(); 1798 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1799 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1800 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1801 continue; 1802 } 1803 String tag = parser.getName(); 1804 if (TAG_NAME.equals(tag)) { 1805 type = parser.next(); 1806 if (type == XmlPullParser.TEXT) { 1807 name = parser.getText(); 1808 } 1809 } else if (TAG_RESTRICTIONS.equals(tag)) { 1810 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 1811 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 1812 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 1813 } else if (TAG_ACCOUNT.equals(tag)) { 1814 type = parser.next(); 1815 if (type == XmlPullParser.TEXT) { 1816 account = parser.getText(); 1817 } 1818 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 1819 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 1820 persistSeedData = true; 1821 } 1822 } 1823 } 1824 1825 // Create the UserInfo object that gets passed around 1826 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 1827 userInfo.serialNumber = serialNumber; 1828 userInfo.creationTime = creationTime; 1829 userInfo.lastLoggedInTime = lastLoggedInTime; 1830 userInfo.lastLoggedInFingerprint = lastLoggedInFingerprint; 1831 userInfo.partial = partial; 1832 userInfo.guestToRemove = guestToRemove; 1833 userInfo.profileGroupId = profileGroupId; 1834 userInfo.restrictedProfileParentId = restrictedProfileParentId; 1835 1836 // Create the UserData object that's internal to this class 1837 UserData userData = new UserData(); 1838 userData.info = userInfo; 1839 userData.account = account; 1840 userData.seedAccountName = seedAccountName; 1841 userData.seedAccountType = seedAccountType; 1842 userData.persistSeedData = persistSeedData; 1843 userData.seedAccountOptions = seedAccountOptions; 1844 1845 synchronized (mRestrictionsLock) { 1846 mBaseUserRestrictions.put(id, baseRestrictions); 1847 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 1848 } 1849 return userData; 1850 } catch (IOException ioe) { 1851 } catch (XmlPullParserException pe) { 1852 } finally { 1853 if (fis != null) { 1854 try { 1855 fis.close(); 1856 } catch (IOException e) { 1857 } 1858 } 1859 } 1860 return null; 1861 } 1862 1863 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1864 String valueString = parser.getAttributeValue(null, attr); 1865 if (valueString == null) return defaultValue; 1866 try { 1867 return Integer.parseInt(valueString); 1868 } catch (NumberFormatException nfe) { 1869 return defaultValue; 1870 } 1871 } 1872 1873 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1874 String valueString = parser.getAttributeValue(null, attr); 1875 if (valueString == null) return defaultValue; 1876 try { 1877 return Long.parseLong(valueString); 1878 } catch (NumberFormatException nfe) { 1879 return defaultValue; 1880 } 1881 } 1882 1883 /** 1884 * Removes the app restrictions file for a specific package and user id, if it exists. 1885 */ 1886 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1887 synchronized (mPackagesLock) { 1888 File dir = Environment.getUserSystemDirectory(userId); 1889 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1890 if (resFile.exists()) { 1891 resFile.delete(); 1892 } 1893 } 1894 } 1895 1896 @Override 1897 public UserInfo createProfileForUser(String name, int flags, int userId) { 1898 checkManageUsersPermission("Only the system can create users"); 1899 return createUserInternal(name, flags, userId); 1900 } 1901 1902 @Override 1903 public UserInfo createUser(String name, int flags) { 1904 checkManageUsersPermission("Only the system can create users"); 1905 return createUserInternal(name, flags, UserHandle.USER_NULL); 1906 } 1907 1908 private UserInfo createUserInternal(String name, int flags, int parentId) { 1909 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 1910 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1911 return null; 1912 } 1913 return createUserInternalUnchecked(name, flags, parentId); 1914 } 1915 1916 private UserInfo createUserInternalUnchecked(String name, int flags, int parentId) { 1917 if (ActivityManager.isLowRamDeviceStatic()) { 1918 return null; 1919 } 1920 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1921 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 1922 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 1923 final long ident = Binder.clearCallingIdentity(); 1924 UserInfo userInfo; 1925 UserData userData; 1926 final int userId; 1927 try { 1928 synchronized (mPackagesLock) { 1929 UserData parent = null; 1930 if (parentId != UserHandle.USER_NULL) { 1931 synchronized (mUsersLock) { 1932 parent = getUserDataLU(parentId); 1933 } 1934 if (parent == null) return null; 1935 } 1936 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 1937 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 1938 return null; 1939 } 1940 if (!isGuest && !isManagedProfile && isUserLimitReached()) { 1941 // If we're not adding a guest user or a managed profile and the limit has 1942 // been reached, cannot add a user. 1943 return null; 1944 } 1945 // If we're adding a guest and there already exists one, bail. 1946 if (isGuest && findCurrentGuestUser() != null) { 1947 return null; 1948 } 1949 // In legacy mode, restricted profile's parent can only be the owner user 1950 if (isRestricted && !UserManager.isSplitSystemUser() 1951 && (parentId != UserHandle.USER_SYSTEM)) { 1952 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 1953 return null; 1954 } 1955 if (isRestricted && UserManager.isSplitSystemUser()) { 1956 if (parent == null) { 1957 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 1958 + "specified"); 1959 return null; 1960 } 1961 if (!parent.info.canHaveProfile()) { 1962 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 1963 + "created for the specified parent user id " + parentId); 1964 return null; 1965 } 1966 } 1967 if (!UserManager.isSplitSystemUser() && (flags & UserInfo.FLAG_EPHEMERAL) != 0) { 1968 Log.e(LOG_TAG, 1969 "Ephemeral users are supported on split-system-user systems only."); 1970 return null; 1971 } 1972 // In split system user mode, we assign the first human user the primary flag. 1973 // And if there is no device owner, we also assign the admin flag to primary user. 1974 if (UserManager.isSplitSystemUser() 1975 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 1976 flags |= UserInfo.FLAG_PRIMARY; 1977 synchronized (mUsersLock) { 1978 if (!mIsDeviceManaged) { 1979 flags |= UserInfo.FLAG_ADMIN; 1980 } 1981 } 1982 } 1983 1984 userId = getNextAvailableId(); 1985 Environment.getUserSystemDirectory(userId).mkdirs(); 1986 boolean ephemeralGuests = Resources.getSystem() 1987 .getBoolean(com.android.internal.R.bool.config_guestUserEphemeral); 1988 1989 synchronized (mUsersLock) { 1990 // Add ephemeral flag to guests/users if required. Also inherit it from parent. 1991 if ((isGuest && ephemeralGuests) || mForceEphemeralUsers 1992 || (parent != null && parent.info.isEphemeral())) { 1993 flags |= UserInfo.FLAG_EPHEMERAL; 1994 } 1995 1996 userInfo = new UserInfo(userId, name, null, flags); 1997 userInfo.serialNumber = mNextSerialNumber++; 1998 long now = System.currentTimeMillis(); 1999 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 2000 userInfo.partial = true; 2001 userInfo.lastLoggedInFingerprint = Build.FINGERPRINT; 2002 userData = new UserData(); 2003 userData.info = userInfo; 2004 mUsers.put(userId, userData); 2005 } 2006 writeUserLP(userData); 2007 writeUserListLP(); 2008 if (parent != null) { 2009 if (isManagedProfile) { 2010 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 2011 parent.info.profileGroupId = parent.info.id; 2012 writeUserLP(parent); 2013 } 2014 userInfo.profileGroupId = parent.info.profileGroupId; 2015 } else if (isRestricted) { 2016 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 2017 parent.info.restrictedProfileParentId = parent.info.id; 2018 writeUserLP(parent); 2019 } 2020 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 2021 } 2022 } 2023 } 2024 final StorageManager storage = mContext.getSystemService(StorageManager.class); 2025 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 2026 mPm.prepareUserData(userId, userInfo.serialNumber, 2027 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 2028 mPm.createNewUser(userId); 2029 userInfo.partial = false; 2030 synchronized (mPackagesLock) { 2031 writeUserLP(userData); 2032 } 2033 updateUserIds(); 2034 Bundle restrictions = new Bundle(); 2035 if (isGuest) { 2036 synchronized (mGuestRestrictions) { 2037 restrictions.putAll(mGuestRestrictions); 2038 } 2039 } 2040 synchronized (mRestrictionsLock) { 2041 mBaseUserRestrictions.append(userId, restrictions); 2042 } 2043 mPm.newUserCreated(userId); 2044 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 2045 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 2046 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 2047 android.Manifest.permission.MANAGE_USERS); 2048 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 2049 } finally { 2050 Binder.restoreCallingIdentity(ident); 2051 } 2052 return userInfo; 2053 } 2054 2055 /** 2056 * @hide 2057 */ 2058 @Override 2059 public UserInfo createRestrictedProfile(String name, int parentUserId) { 2060 checkManageUsersPermission("setupRestrictedProfile"); 2061 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 2062 if (user == null) { 2063 return null; 2064 } 2065 long identity = Binder.clearCallingIdentity(); 2066 try { 2067 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 2068 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 2069 // the putIntForUser() will fail. 2070 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 2071 android.provider.Settings.Secure.LOCATION_MODE, 2072 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 2073 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 2074 } finally { 2075 Binder.restoreCallingIdentity(identity); 2076 } 2077 return user; 2078 } 2079 2080 /** 2081 * Find the current guest user. If the Guest user is partial, 2082 * then do not include it in the results as it is about to die. 2083 */ 2084 private UserInfo findCurrentGuestUser() { 2085 synchronized (mUsersLock) { 2086 final int size = mUsers.size(); 2087 for (int i = 0; i < size; i++) { 2088 final UserInfo user = mUsers.valueAt(i).info; 2089 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 2090 return user; 2091 } 2092 } 2093 } 2094 return null; 2095 } 2096 2097 /** 2098 * Mark this guest user for deletion to allow us to create another guest 2099 * and switch to that user before actually removing this guest. 2100 * @param userHandle the userid of the current guest 2101 * @return whether the user could be marked for deletion 2102 */ 2103 @Override 2104 public boolean markGuestForDeletion(int userHandle) { 2105 checkManageUsersPermission("Only the system can remove users"); 2106 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2107 UserManager.DISALLOW_REMOVE_USER, false)) { 2108 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2109 return false; 2110 } 2111 2112 long ident = Binder.clearCallingIdentity(); 2113 try { 2114 final UserData userData; 2115 synchronized (mPackagesLock) { 2116 synchronized (mUsersLock) { 2117 userData = mUsers.get(userHandle); 2118 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2119 return false; 2120 } 2121 } 2122 if (!userData.info.isGuest()) { 2123 return false; 2124 } 2125 // We set this to a guest user that is to be removed. This is a temporary state 2126 // where we are allowed to add new Guest users, even if this one is still not 2127 // removed. This user will still show up in getUserInfo() calls. 2128 // If we don't get around to removing this Guest user, it will be purged on next 2129 // startup. 2130 userData.info.guestToRemove = true; 2131 // Mark it as disabled, so that it isn't returned any more when 2132 // profiles are queried. 2133 userData.info.flags |= UserInfo.FLAG_DISABLED; 2134 writeUserLP(userData); 2135 } 2136 } finally { 2137 Binder.restoreCallingIdentity(ident); 2138 } 2139 return true; 2140 } 2141 2142 /** 2143 * Removes a user and all data directories created for that user. This method should be called 2144 * after the user's processes have been terminated. 2145 * @param userHandle the user's id 2146 */ 2147 @Override 2148 public boolean removeUser(int userHandle) { 2149 checkManageUsersPermission("Only the system can remove users"); 2150 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2151 UserManager.DISALLOW_REMOVE_USER, false)) { 2152 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2153 return false; 2154 } 2155 2156 long ident = Binder.clearCallingIdentity(); 2157 try { 2158 final UserData userData; 2159 int currentUser = ActivityManager.getCurrentUser(); 2160 if (currentUser == userHandle) { 2161 Log.w(LOG_TAG, "Current user cannot be removed"); 2162 return false; 2163 } 2164 synchronized (mPackagesLock) { 2165 synchronized (mUsersLock) { 2166 userData = mUsers.get(userHandle); 2167 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2168 return false; 2169 } 2170 2171 // We remember deleted user IDs to prevent them from being 2172 // reused during the current boot; they can still be reused 2173 // after a reboot. 2174 mRemovingUserIds.put(userHandle, true); 2175 } 2176 2177 try { 2178 mAppOpsService.removeUser(userHandle); 2179 } catch (RemoteException e) { 2180 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2181 } 2182 // Set this to a partially created user, so that the user will be purged 2183 // on next startup, in case the runtime stops now before stopping and 2184 // removing the user completely. 2185 userData.info.partial = true; 2186 // Mark it as disabled, so that it isn't returned any more when 2187 // profiles are queried. 2188 userData.info.flags |= UserInfo.FLAG_DISABLED; 2189 writeUserLP(userData); 2190 } 2191 2192 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2193 && userData.info.isManagedProfile()) { 2194 // Send broadcast to notify system that the user removed was a 2195 // managed user. 2196 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2197 } 2198 2199 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2200 int res; 2201 try { 2202 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 2203 new IStopUserCallback.Stub() { 2204 @Override 2205 public void userStopped(int userId) { 2206 finishRemoveUser(userId); 2207 } 2208 @Override 2209 public void userStopAborted(int userId) { 2210 } 2211 }); 2212 } catch (RemoteException e) { 2213 return false; 2214 } 2215 return res == ActivityManager.USER_OP_SUCCESS; 2216 } finally { 2217 Binder.restoreCallingIdentity(ident); 2218 } 2219 } 2220 2221 void finishRemoveUser(final int userHandle) { 2222 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2223 // Let other services shutdown any activity and clean up their state before completely 2224 // wiping the user's system directory and removing from the user list 2225 long ident = Binder.clearCallingIdentity(); 2226 try { 2227 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2228 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2229 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2230 android.Manifest.permission.MANAGE_USERS, 2231 2232 new BroadcastReceiver() { 2233 @Override 2234 public void onReceive(Context context, Intent intent) { 2235 if (DBG) { 2236 Slog.i(LOG_TAG, 2237 "USER_REMOVED broadcast sent, cleaning up user data " 2238 + userHandle); 2239 } 2240 new Thread() { 2241 @Override 2242 public void run() { 2243 // Clean up any ActivityManager state 2244 LocalServices.getService(ActivityManagerInternal.class) 2245 .onUserRemoved(userHandle); 2246 removeUserState(userHandle); 2247 } 2248 }.start(); 2249 } 2250 }, 2251 2252 null, Activity.RESULT_OK, null, null); 2253 } finally { 2254 Binder.restoreCallingIdentity(ident); 2255 } 2256 } 2257 2258 private void removeUserState(final int userHandle) { 2259 try { 2260 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2261 } catch (IllegalStateException e) { 2262 // This may be simply because the user was partially created. 2263 Slog.i(LOG_TAG, 2264 "Destroying key for user " + userHandle + " failed, continuing anyway", e); 2265 } 2266 2267 // Cleanup package manager settings 2268 mPm.cleanUpUser(this, userHandle); 2269 // Remove this user from the list 2270 synchronized (mUsersLock) { 2271 mUsers.remove(userHandle); 2272 mIsUserManaged.delete(userHandle); 2273 } 2274 synchronized (mRestrictionsLock) { 2275 mBaseUserRestrictions.remove(userHandle); 2276 mAppliedUserRestrictions.remove(userHandle); 2277 mCachedEffectiveUserRestrictions.remove(userHandle); 2278 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2279 } 2280 // Update the user list 2281 synchronized (mPackagesLock) { 2282 writeUserListLP(); 2283 } 2284 // Remove user file 2285 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2286 userFile.delete(); 2287 updateUserIds(); 2288 2289 // Now that we've purged all the metadata above, destroy the actual data 2290 // on disk; if we battery pull in here we'll finish cleaning up when 2291 // reconciling after reboot. 2292 mPm.destroyUserData(userHandle, 2293 StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE); 2294 } 2295 2296 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2297 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2298 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2299 Intent.FLAG_RECEIVER_FOREGROUND); 2300 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2301 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2302 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2303 } 2304 2305 @Override 2306 public Bundle getApplicationRestrictions(String packageName) { 2307 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2308 } 2309 2310 @Override 2311 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2312 if (UserHandle.getCallingUserId() != userId 2313 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2314 checkSystemOrRoot("get application restrictions for other users/apps"); 2315 } 2316 synchronized (mPackagesLock) { 2317 // Read the restrictions from XML 2318 return readApplicationRestrictionsLP(packageName, userId); 2319 } 2320 } 2321 2322 @Override 2323 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2324 int userId) { 2325 checkSystemOrRoot("set application restrictions"); 2326 synchronized (mPackagesLock) { 2327 if (restrictions == null || restrictions.isEmpty()) { 2328 cleanAppRestrictionsForPackage(packageName, userId); 2329 } else { 2330 restrictions.setDefusable(true); 2331 // Write the restrictions to XML 2332 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2333 } 2334 } 2335 2336 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2337 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2338 changeIntent.setPackage(packageName); 2339 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2340 mContext.sendBroadcastAsUser(changeIntent, UserHandle.of(userId)); 2341 } 2342 2343 private int getUidForPackage(String packageName) { 2344 long ident = Binder.clearCallingIdentity(); 2345 try { 2346 return mContext.getPackageManager().getApplicationInfo(packageName, 2347 PackageManager.MATCH_UNINSTALLED_PACKAGES).uid; 2348 } catch (NameNotFoundException nnfe) { 2349 return -1; 2350 } finally { 2351 Binder.restoreCallingIdentity(ident); 2352 } 2353 } 2354 2355 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2356 AtomicFile restrictionsFile = 2357 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2358 packageToRestrictionsFileName(packageName))); 2359 return readApplicationRestrictionsLP(restrictionsFile); 2360 } 2361 2362 @VisibleForTesting 2363 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2364 final Bundle restrictions = new Bundle(); 2365 final ArrayList<String> values = new ArrayList<>(); 2366 if (!restrictionsFile.getBaseFile().exists()) { 2367 return restrictions; 2368 } 2369 2370 FileInputStream fis = null; 2371 try { 2372 fis = restrictionsFile.openRead(); 2373 XmlPullParser parser = Xml.newPullParser(); 2374 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2375 XmlUtils.nextElement(parser); 2376 if (parser.getEventType() != XmlPullParser.START_TAG) { 2377 Slog.e(LOG_TAG, "Unable to read restrictions file " 2378 + restrictionsFile.getBaseFile()); 2379 return restrictions; 2380 } 2381 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2382 readEntry(restrictions, values, parser); 2383 } 2384 } catch (IOException|XmlPullParserException e) { 2385 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2386 } finally { 2387 IoUtils.closeQuietly(fis); 2388 } 2389 return restrictions; 2390 } 2391 2392 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2393 XmlPullParser parser) throws XmlPullParserException, IOException { 2394 int type = parser.getEventType(); 2395 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2396 String key = parser.getAttributeValue(null, ATTR_KEY); 2397 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2398 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2399 if (multiple != null) { 2400 values.clear(); 2401 int count = Integer.parseInt(multiple); 2402 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2403 if (type == XmlPullParser.START_TAG 2404 && parser.getName().equals(TAG_VALUE)) { 2405 values.add(parser.nextText().trim()); 2406 count--; 2407 } 2408 } 2409 String [] valueStrings = new String[values.size()]; 2410 values.toArray(valueStrings); 2411 restrictions.putStringArray(key, valueStrings); 2412 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2413 restrictions.putBundle(key, readBundleEntry(parser, values)); 2414 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2415 final int outerDepth = parser.getDepth(); 2416 ArrayList<Bundle> bundleList = new ArrayList<>(); 2417 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2418 Bundle childBundle = readBundleEntry(parser, values); 2419 bundleList.add(childBundle); 2420 } 2421 restrictions.putParcelableArray(key, 2422 bundleList.toArray(new Bundle[bundleList.size()])); 2423 } else { 2424 String value = parser.nextText().trim(); 2425 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2426 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2427 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2428 restrictions.putInt(key, Integer.parseInt(value)); 2429 } else { 2430 restrictions.putString(key, value); 2431 } 2432 } 2433 } 2434 } 2435 2436 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2437 throws IOException, XmlPullParserException { 2438 Bundle childBundle = new Bundle(); 2439 final int outerDepth = parser.getDepth(); 2440 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2441 readEntry(childBundle, values, parser); 2442 } 2443 return childBundle; 2444 } 2445 2446 private void writeApplicationRestrictionsLP(String packageName, 2447 Bundle restrictions, int userId) { 2448 AtomicFile restrictionsFile = new AtomicFile( 2449 new File(Environment.getUserSystemDirectory(userId), 2450 packageToRestrictionsFileName(packageName))); 2451 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2452 } 2453 2454 @VisibleForTesting 2455 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2456 FileOutputStream fos = null; 2457 try { 2458 fos = restrictionsFile.startWrite(); 2459 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2460 2461 final XmlSerializer serializer = new FastXmlSerializer(); 2462 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2463 serializer.startDocument(null, true); 2464 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2465 2466 serializer.startTag(null, TAG_RESTRICTIONS); 2467 writeBundle(restrictions, serializer); 2468 serializer.endTag(null, TAG_RESTRICTIONS); 2469 2470 serializer.endDocument(); 2471 restrictionsFile.finishWrite(fos); 2472 } catch (Exception e) { 2473 restrictionsFile.failWrite(fos); 2474 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2475 } 2476 } 2477 2478 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2479 throws IOException { 2480 for (String key : restrictions.keySet()) { 2481 Object value = restrictions.get(key); 2482 serializer.startTag(null, TAG_ENTRY); 2483 serializer.attribute(null, ATTR_KEY, key); 2484 2485 if (value instanceof Boolean) { 2486 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2487 serializer.text(value.toString()); 2488 } else if (value instanceof Integer) { 2489 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2490 serializer.text(value.toString()); 2491 } else if (value == null || value instanceof String) { 2492 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2493 serializer.text(value != null ? (String) value : ""); 2494 } else if (value instanceof Bundle) { 2495 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2496 writeBundle((Bundle) value, serializer); 2497 } else if (value instanceof Parcelable[]) { 2498 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2499 Parcelable[] array = (Parcelable[]) value; 2500 for (Parcelable parcelable : array) { 2501 if (!(parcelable instanceof Bundle)) { 2502 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2503 } 2504 serializer.startTag(null, TAG_ENTRY); 2505 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2506 writeBundle((Bundle) parcelable, serializer); 2507 serializer.endTag(null, TAG_ENTRY); 2508 } 2509 } else { 2510 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2511 String[] values = (String[]) value; 2512 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2513 for (String choice : values) { 2514 serializer.startTag(null, TAG_VALUE); 2515 serializer.text(choice != null ? choice : ""); 2516 serializer.endTag(null, TAG_VALUE); 2517 } 2518 } 2519 serializer.endTag(null, TAG_ENTRY); 2520 } 2521 } 2522 2523 @Override 2524 public int getUserSerialNumber(int userHandle) { 2525 synchronized (mUsersLock) { 2526 if (!exists(userHandle)) return -1; 2527 return getUserInfoLU(userHandle).serialNumber; 2528 } 2529 } 2530 2531 @Override 2532 public int getUserHandle(int userSerialNumber) { 2533 synchronized (mUsersLock) { 2534 for (int userId : mUserIds) { 2535 UserInfo info = getUserInfoLU(userId); 2536 if (info != null && info.serialNumber == userSerialNumber) return userId; 2537 } 2538 // Not found 2539 return -1; 2540 } 2541 } 2542 2543 @Override 2544 public long getUserCreationTime(int userHandle) { 2545 int callingUserId = UserHandle.getCallingUserId(); 2546 UserInfo userInfo = null; 2547 synchronized (mUsersLock) { 2548 if (callingUserId == userHandle) { 2549 userInfo = getUserInfoLU(userHandle); 2550 } else { 2551 UserInfo parent = getProfileParentLU(userHandle); 2552 if (parent != null && parent.id == callingUserId) { 2553 userInfo = getUserInfoLU(userHandle); 2554 } 2555 } 2556 } 2557 if (userInfo == null) { 2558 throw new SecurityException("userHandle can only be the calling user or a managed " 2559 + "profile associated with this user"); 2560 } 2561 return userInfo.creationTime; 2562 } 2563 2564 /** 2565 * Caches the list of user ids in an array, adjusting the array size when necessary. 2566 */ 2567 private void updateUserIds() { 2568 int num = 0; 2569 synchronized (mUsersLock) { 2570 final int userSize = mUsers.size(); 2571 for (int i = 0; i < userSize; i++) { 2572 if (!mUsers.valueAt(i).info.partial) { 2573 num++; 2574 } 2575 } 2576 final int[] newUsers = new int[num]; 2577 int n = 0; 2578 for (int i = 0; i < userSize; i++) { 2579 if (!mUsers.valueAt(i).info.partial) { 2580 newUsers[n++] = mUsers.keyAt(i); 2581 } 2582 } 2583 mUserIds = newUsers; 2584 } 2585 } 2586 2587 /** 2588 * Called right before a user is started. This gives us a chance to prepare 2589 * app storage and apply any user restrictions. 2590 */ 2591 public void onBeforeStartUser(int userId) { 2592 final int userSerial = getUserSerialNumber(userId); 2593 mPm.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_DE); 2594 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_DE); 2595 2596 if (userId != UserHandle.USER_SYSTEM) { 2597 synchronized (mRestrictionsLock) { 2598 applyUserRestrictionsLR(userId); 2599 } 2600 } 2601 } 2602 2603 /** 2604 * Called right before a user is unlocked. This gives us a chance to prepare 2605 * app storage. 2606 */ 2607 public void onBeforeUnlockUser(@UserIdInt int userId) { 2608 final int userSerial = getUserSerialNumber(userId); 2609 mPm.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_CE); 2610 mPm.reconcileAppsData(userId, StorageManager.FLAG_STORAGE_CE); 2611 } 2612 2613 /** 2614 * Make a note of the last started time of a user and do some cleanup. 2615 * @param userId the user that was just foregrounded 2616 */ 2617 public void onUserLoggedIn(@UserIdInt int userId) { 2618 UserData userData = getUserDataNoChecks(userId); 2619 if (userData == null || userData.info.partial) { 2620 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2621 return; 2622 } 2623 2624 final long now = System.currentTimeMillis(); 2625 if (now > EPOCH_PLUS_30_YEARS) { 2626 userData.info.lastLoggedInTime = now; 2627 } 2628 userData.info.lastLoggedInFingerprint = Build.FINGERPRINT; 2629 scheduleWriteUser(userData); 2630 } 2631 2632 /** 2633 * Returns the next available user id, filling in any holes in the ids. 2634 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2635 * for data and battery stats collection, or unexpected cross-talk. 2636 */ 2637 private int getNextAvailableId() { 2638 synchronized (mUsersLock) { 2639 int i = MIN_USER_ID; 2640 while (i < MAX_USER_ID) { 2641 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2642 return i; 2643 } 2644 i++; 2645 } 2646 } 2647 throw new IllegalStateException("No user id available!"); 2648 } 2649 2650 private String packageToRestrictionsFileName(String packageName) { 2651 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2652 } 2653 2654 /** 2655 * Enforce that serial number stored in user directory inode matches the 2656 * given expected value. Gracefully sets the serial number if currently 2657 * undefined. 2658 * 2659 * @throws IOException when problem extracting serial number, or serial 2660 * number is mismatched. 2661 */ 2662 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2663 final int foundSerial = getSerialNumber(file); 2664 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 2665 2666 if (foundSerial == -1) { 2667 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 2668 try { 2669 setSerialNumber(file, serialNumber); 2670 } catch (IOException e) { 2671 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 2672 } 2673 2674 } else if (foundSerial != serialNumber) { 2675 throw new IOException("Found serial number " + foundSerial 2676 + " doesn't match expected " + serialNumber); 2677 } 2678 } 2679 2680 /** 2681 * Set serial number stored in user directory inode. 2682 * 2683 * @throws IOException if serial number was already set 2684 */ 2685 private static void setSerialNumber(File file, int serialNumber) 2686 throws IOException { 2687 try { 2688 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 2689 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 2690 } catch (ErrnoException e) { 2691 throw e.rethrowAsIOException(); 2692 } 2693 } 2694 2695 /** 2696 * Return serial number stored in user directory inode. 2697 * 2698 * @return parsed serial number, or -1 if not set 2699 */ 2700 private static int getSerialNumber(File file) throws IOException { 2701 try { 2702 final byte[] buf = new byte[256]; 2703 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 2704 final String serial = new String(buf, 0, len); 2705 try { 2706 return Integer.parseInt(serial); 2707 } catch (NumberFormatException e) { 2708 throw new IOException("Bad serial number: " + serial); 2709 } 2710 } catch (ErrnoException e) { 2711 if (e.errno == OsConstants.ENODATA) { 2712 return -1; 2713 } else { 2714 throw e.rethrowAsIOException(); 2715 } 2716 } 2717 } 2718 2719 @Override 2720 public void setSeedAccountData(int userId, String accountName, String accountType, 2721 PersistableBundle accountOptions, boolean persist) { 2722 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 2723 synchronized (mPackagesLock) { 2724 final UserData userData; 2725 synchronized (mUsersLock) { 2726 userData = getUserDataLU(userId); 2727 if (userData == null) { 2728 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 2729 return; 2730 } 2731 userData.seedAccountName = accountName; 2732 userData.seedAccountType = accountType; 2733 userData.seedAccountOptions = accountOptions; 2734 userData.persistSeedData = persist; 2735 } 2736 if (persist) { 2737 writeUserLP(userData); 2738 } 2739 } 2740 } 2741 2742 @Override 2743 public String getSeedAccountName() throws RemoteException { 2744 checkManageUsersPermission("Cannot get seed account information"); 2745 synchronized (mUsersLock) { 2746 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2747 return userData.seedAccountName; 2748 } 2749 } 2750 2751 @Override 2752 public String getSeedAccountType() throws RemoteException { 2753 checkManageUsersPermission("Cannot get seed account information"); 2754 synchronized (mUsersLock) { 2755 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2756 return userData.seedAccountType; 2757 } 2758 } 2759 2760 @Override 2761 public PersistableBundle getSeedAccountOptions() throws RemoteException { 2762 checkManageUsersPermission("Cannot get seed account information"); 2763 synchronized (mUsersLock) { 2764 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2765 return userData.seedAccountOptions; 2766 } 2767 } 2768 2769 @Override 2770 public void clearSeedAccountData() throws RemoteException { 2771 checkManageUsersPermission("Cannot clear seed account information"); 2772 synchronized (mPackagesLock) { 2773 UserData userData; 2774 synchronized (mUsersLock) { 2775 userData = getUserDataLU(UserHandle.getCallingUserId()); 2776 if (userData == null) return; 2777 userData.clearSeedAccountData(); 2778 } 2779 writeUserLP(userData); 2780 } 2781 } 2782 2783 @Override 2784 public boolean someUserHasSeedAccount(String accountName, String accountType) 2785 throws RemoteException { 2786 checkManageUsersPermission("Cannot check seed account information"); 2787 synchronized (mUsersLock) { 2788 final int userSize = mUsers.size(); 2789 for (int i = 0; i < userSize; i++) { 2790 final UserData data = mUsers.valueAt(i); 2791 if (data.info.isInitialized()) continue; 2792 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 2793 continue; 2794 } 2795 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 2796 continue; 2797 } 2798 return true; 2799 } 2800 } 2801 return false; 2802 } 2803 2804 @Override 2805 public void onShellCommand(FileDescriptor in, FileDescriptor out, 2806 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 2807 (new Shell()).exec(this, in, out, err, args, resultReceiver); 2808 } 2809 2810 int onShellCommand(Shell shell, String cmd) { 2811 if (cmd == null) { 2812 return shell.handleDefaultCommands(cmd); 2813 } 2814 2815 final PrintWriter pw = shell.getOutPrintWriter(); 2816 try { 2817 switch(cmd) { 2818 case "list": 2819 return runList(pw); 2820 } 2821 } catch (RemoteException e) { 2822 pw.println("Remote exception: " + e); 2823 } 2824 return -1; 2825 } 2826 2827 private int runList(PrintWriter pw) throws RemoteException { 2828 final IActivityManager am = ActivityManagerNative.getDefault(); 2829 final List<UserInfo> users = getUsers(false); 2830 if (users == null) { 2831 pw.println("Error: couldn't get users"); 2832 return 1; 2833 } else { 2834 pw.println("Users:"); 2835 for (int i = 0; i < users.size(); i++) { 2836 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 2837 pw.println("\t" + users.get(i).toString() + running); 2838 } 2839 return 0; 2840 } 2841 } 2842 2843 @Override 2844 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2845 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2846 != PackageManager.PERMISSION_GRANTED) { 2847 pw.println("Permission Denial: can't dump UserManager from from pid=" 2848 + Binder.getCallingPid() 2849 + ", uid=" + Binder.getCallingUid() 2850 + " without permission " 2851 + android.Manifest.permission.DUMP); 2852 return; 2853 } 2854 2855 long now = System.currentTimeMillis(); 2856 StringBuilder sb = new StringBuilder(); 2857 synchronized (mPackagesLock) { 2858 synchronized (mUsersLock) { 2859 pw.println("Users:"); 2860 for (int i = 0; i < mUsers.size(); i++) { 2861 UserData userData = mUsers.valueAt(i); 2862 if (userData == null) { 2863 continue; 2864 } 2865 UserInfo userInfo = userData.info; 2866 final int userId = userInfo.id; 2867 pw.print(" "); pw.print(userInfo); 2868 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 2869 if (mRemovingUserIds.get(userId)) { 2870 pw.print(" <removing> "); 2871 } 2872 if (userInfo.partial) { 2873 pw.print(" <partial>"); 2874 } 2875 pw.println(); 2876 pw.print(" Created: "); 2877 if (userInfo.creationTime == 0) { 2878 pw.println("<unknown>"); 2879 } else { 2880 sb.setLength(0); 2881 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 2882 sb.append(" ago"); 2883 pw.println(sb); 2884 } 2885 pw.print(" Last logged in: "); 2886 if (userInfo.lastLoggedInTime == 0) { 2887 pw.println("<unknown>"); 2888 } else { 2889 sb.setLength(0); 2890 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 2891 sb.append(" ago"); 2892 pw.println(sb); 2893 } 2894 pw.print(" Last logged in fingerprint: "); 2895 pw.println(userInfo.lastLoggedInFingerprint); 2896 pw.print(" Has profile owner: "); 2897 pw.println(mIsUserManaged.get(userId)); 2898 pw.println(" Restrictions:"); 2899 synchronized (mRestrictionsLock) { 2900 UserRestrictionsUtils.dumpRestrictions( 2901 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 2902 pw.println(" Device policy local restrictions:"); 2903 UserRestrictionsUtils.dumpRestrictions( 2904 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 2905 pw.println(" Effective restrictions:"); 2906 UserRestrictionsUtils.dumpRestrictions( 2907 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 2908 } 2909 2910 if (userData.account != null) { 2911 pw.print(" Account name: " + userData.account); 2912 pw.println(); 2913 } 2914 2915 if (userData.seedAccountName != null) { 2916 pw.print(" Seed account name: " + userData.seedAccountName); 2917 pw.println(); 2918 if (userData.seedAccountType != null) { 2919 pw.print(" account type: " + userData.seedAccountType); 2920 pw.println(); 2921 } 2922 if (userData.seedAccountOptions != null) { 2923 pw.print(" account options exist"); 2924 pw.println(); 2925 } 2926 } 2927 } 2928 } 2929 pw.println(); 2930 pw.println(" Device policy global restrictions:"); 2931 synchronized (mRestrictionsLock) { 2932 UserRestrictionsUtils 2933 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 2934 } 2935 pw.println(); 2936 pw.println(" Guest restrictions:"); 2937 synchronized (mGuestRestrictions) { 2938 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 2939 } 2940 synchronized (mUsersLock) { 2941 pw.println(); 2942 pw.println(" Device managed: " + mIsDeviceManaged); 2943 } 2944 // Dump some capabilities 2945 pw.println(); 2946 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 2947 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 2948 pw.println(" All guests ephemeral: " + Resources.getSystem().getBoolean( 2949 com.android.internal.R.bool.config_guestUserEphemeral)); 2950 } 2951 } 2952 2953 final class MainHandler extends Handler { 2954 2955 @Override 2956 public void handleMessage(Message msg) { 2957 switch (msg.what) { 2958 case WRITE_USER_MSG: 2959 removeMessages(WRITE_USER_MSG, msg.obj); 2960 synchronized (mPackagesLock) { 2961 int userId = ((UserData) msg.obj).info.id; 2962 UserData userData = getUserDataNoChecks(userId); 2963 if (userData != null) { 2964 writeUserLP(userData); 2965 } 2966 } 2967 } 2968 } 2969 } 2970 2971 /** 2972 * @param userId 2973 * @return whether the user has been initialized yet 2974 */ 2975 boolean isInitialized(int userId) { 2976 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 2977 } 2978 2979 private class LocalService extends UserManagerInternal { 2980 @Override 2981 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 2982 @Nullable Bundle globalRestrictions) { 2983 UserManagerService.this.setDevicePolicyUserRestrictionsInner(userId, localRestrictions, 2984 globalRestrictions); 2985 } 2986 2987 @Override 2988 public Bundle getBaseUserRestrictions(int userId) { 2989 synchronized (mRestrictionsLock) { 2990 return mBaseUserRestrictions.get(userId); 2991 } 2992 } 2993 2994 @Override 2995 public void setBaseUserRestrictionsByDpmsForMigration( 2996 int userId, Bundle baseRestrictions) { 2997 synchronized (mRestrictionsLock) { 2998 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 2999 invalidateEffectiveUserRestrictionsLR(userId); 3000 } 3001 3002 final UserData userData = getUserDataNoChecks(userId); 3003 synchronized (mPackagesLock) { 3004 if (userData != null) { 3005 writeUserLP(userData); 3006 } else { 3007 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 3008 } 3009 } 3010 } 3011 3012 @Override 3013 public boolean getUserRestriction(int userId, String key) { 3014 return getUserRestrictions(userId).getBoolean(key); 3015 } 3016 3017 @Override 3018 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 3019 synchronized (mUserRestrictionsListeners) { 3020 mUserRestrictionsListeners.add(listener); 3021 } 3022 } 3023 3024 @Override 3025 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 3026 synchronized (mUserRestrictionsListeners) { 3027 mUserRestrictionsListeners.remove(listener); 3028 } 3029 } 3030 3031 @Override 3032 public void setDeviceManaged(boolean isManaged) { 3033 synchronized (mUsersLock) { 3034 mIsDeviceManaged = isManaged; 3035 } 3036 } 3037 3038 @Override 3039 public void setUserManaged(int userId, boolean isManaged) { 3040 synchronized (mUsersLock) { 3041 mIsUserManaged.put(userId, isManaged); 3042 } 3043 } 3044 3045 @Override 3046 public void setUserIcon(int userId, Bitmap bitmap) { 3047 long ident = Binder.clearCallingIdentity(); 3048 try { 3049 synchronized (mPackagesLock) { 3050 UserData userData = getUserDataNoChecks(userId); 3051 if (userData == null || userData.info.partial) { 3052 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 3053 return; 3054 } 3055 writeBitmapLP(userData.info, bitmap); 3056 writeUserLP(userData); 3057 } 3058 sendUserInfoChangedBroadcast(userId); 3059 } finally { 3060 Binder.restoreCallingIdentity(ident); 3061 } 3062 } 3063 3064 @Override 3065 public void setForceEphemeralUsers(boolean forceEphemeralUsers) { 3066 synchronized (mUsersLock) { 3067 mForceEphemeralUsers = forceEphemeralUsers; 3068 } 3069 } 3070 3071 @Override 3072 public void removeAllUsers() { 3073 if (UserHandle.USER_SYSTEM == ActivityManager.getCurrentUser()) { 3074 // Remove the non-system users straight away. 3075 removeNonSystemUsers(); 3076 } else { 3077 // Switch to the system user first and then remove the other users. 3078 BroadcastReceiver userSwitchedReceiver = new BroadcastReceiver() { 3079 @Override 3080 public void onReceive(Context context, Intent intent) { 3081 int userId = 3082 intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3083 if (userId != UserHandle.USER_SYSTEM) { 3084 return; 3085 } 3086 mContext.unregisterReceiver(this); 3087 removeNonSystemUsers(); 3088 } 3089 }; 3090 IntentFilter userSwitchedFilter = new IntentFilter(); 3091 userSwitchedFilter.addAction(Intent.ACTION_USER_SWITCHED); 3092 mContext.registerReceiver( 3093 userSwitchedReceiver, userSwitchedFilter, null, mHandler); 3094 3095 // Switch to the system user. 3096 ActivityManager am = 3097 (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); 3098 am.switchUser(UserHandle.USER_SYSTEM); 3099 } 3100 } 3101 3102 @Override 3103 public void onEphemeralUserStop(int userId) { 3104 synchronized (mUsersLock) { 3105 UserInfo userInfo = getUserInfoLU(userId); 3106 if (userInfo != null && userInfo.isEphemeral()) { 3107 // Do not allow switching back to the ephemeral user again as the user is going 3108 // to be deleted. 3109 userInfo.flags |= UserInfo.FLAG_DISABLED; 3110 if (userInfo.isGuest()) { 3111 // Indicate that the guest will be deleted after it stops. 3112 userInfo.guestToRemove = true; 3113 } 3114 } 3115 } 3116 } 3117 3118 @Override 3119 public UserInfo createUserEvenWhenDisallowed(String name, int flags) { 3120 UserInfo user = createUserInternalUnchecked(name, flags, UserHandle.USER_NULL); 3121 // Keep this in sync with UserManager.createUser 3122 if (user != null && !user.isAdmin()) { 3123 setUserRestriction(UserManager.DISALLOW_SMS, true, user.id); 3124 setUserRestriction(UserManager.DISALLOW_OUTGOING_CALLS, true, user.id); 3125 } 3126 return user; 3127 } 3128 } 3129 3130 /* Remove all the users except of the system one. */ 3131 private void removeNonSystemUsers() { 3132 ArrayList<UserInfo> usersToRemove = new ArrayList<>(); 3133 synchronized (mUsersLock) { 3134 final int userSize = mUsers.size(); 3135 for (int i = 0; i < userSize; i++) { 3136 UserInfo ui = mUsers.valueAt(i).info; 3137 if (ui.id != UserHandle.USER_SYSTEM) { 3138 usersToRemove.add(ui); 3139 } 3140 } 3141 } 3142 for (UserInfo ui: usersToRemove) { 3143 removeUser(ui.id); 3144 } 3145 } 3146 3147 private class Shell extends ShellCommand { 3148 @Override 3149 public int onCommand(String cmd) { 3150 return onShellCommand(this, cmd); 3151 } 3152 3153 @Override 3154 public void onHelp() { 3155 final PrintWriter pw = getOutPrintWriter(); 3156 pw.println("User manager (user) commands:"); 3157 pw.println(" help"); 3158 pw.println(" Print this help text."); 3159 pw.println(""); 3160 pw.println(" list"); 3161 pw.println(" Prints all users on the system."); 3162 } 3163 } 3164 3165 private static void debug(String message) { 3166 Log.d(LOG_TAG, message + 3167 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 3168 } 3169} 3170