UserManagerService.java revision 81c61eabba101f81b3f1395cd849e7b20d59a0d2
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.pm; 18 19import android.Manifest; 20import android.annotation.NonNull; 21import android.annotation.Nullable; 22import android.app.Activity; 23import android.app.ActivityManager; 24import android.app.ActivityManagerInternal; 25import android.app.ActivityManagerNative; 26import android.app.IActivityManager; 27import android.app.IStopUserCallback; 28import android.content.BroadcastReceiver; 29import android.content.Context; 30import android.content.Intent; 31import android.content.pm.ApplicationInfo; 32import android.content.pm.PackageManager; 33import android.content.pm.PackageManager.NameNotFoundException; 34import android.content.pm.UserInfo; 35import android.content.res.Resources; 36import android.graphics.Bitmap; 37import android.os.Binder; 38import android.os.Bundle; 39import android.os.Debug; 40import android.os.Environment; 41import android.os.FileUtils; 42import android.os.Handler; 43import android.os.IUserManager; 44import android.os.Message; 45import android.os.ParcelFileDescriptor; 46import android.os.Parcelable; 47import android.os.PersistableBundle; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.ResultReceiver; 51import android.os.ServiceManager; 52import android.os.ShellCommand; 53import android.os.UserHandle; 54import android.os.UserManager; 55import android.os.UserManagerInternal; 56import android.os.UserManagerInternal.UserRestrictionsListener; 57import android.os.storage.StorageManager; 58import android.os.storage.VolumeInfo; 59import android.system.ErrnoException; 60import android.system.Os; 61import android.system.OsConstants; 62import android.util.AtomicFile; 63import android.util.Log; 64import android.util.Slog; 65import android.util.SparseArray; 66import android.util.SparseBooleanArray; 67import android.util.TimeUtils; 68import android.util.Xml; 69 70import com.android.internal.annotations.GuardedBy; 71import com.android.internal.annotations.VisibleForTesting; 72import com.android.internal.app.IAppOpsService; 73import com.android.internal.logging.MetricsLogger; 74import com.android.internal.util.FastXmlSerializer; 75import com.android.internal.util.Preconditions; 76import com.android.internal.util.XmlUtils; 77import com.android.internal.widget.LockPatternUtils; 78import com.android.server.LocalServices; 79import com.android.server.pm.Installer.StorageFlags; 80 81import org.xmlpull.v1.XmlPullParser; 82import org.xmlpull.v1.XmlPullParserException; 83import org.xmlpull.v1.XmlSerializer; 84 85import java.io.BufferedOutputStream; 86import java.io.File; 87import java.io.FileDescriptor; 88import java.io.FileInputStream; 89import java.io.FileNotFoundException; 90import java.io.FileOutputStream; 91import java.io.IOException; 92import java.io.PrintWriter; 93import java.nio.charset.StandardCharsets; 94import java.util.ArrayList; 95import java.util.List; 96 97import libcore.io.IoUtils; 98import libcore.util.Objects; 99 100/** 101 * Service for {@link UserManager}. 102 * 103 * Method naming convention: 104 * <ul> 105 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 106 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 107 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 108 * </ul> 109 */ 110public class UserManagerService extends IUserManager.Stub { 111 private static final String LOG_TAG = "UserManagerService"; 112 static final boolean DBG = false; // DO NOT SUBMIT WITH TRUE 113 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 114 115 private static final String TAG_NAME = "name"; 116 private static final String TAG_ACCOUNT = "account"; 117 private static final String ATTR_FLAGS = "flags"; 118 private static final String ATTR_ICON_PATH = "icon"; 119 private static final String ATTR_ID = "id"; 120 private static final String ATTR_CREATION_TIME = "created"; 121 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 122 private static final String ATTR_SERIAL_NO = "serialNumber"; 123 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 124 private static final String ATTR_PARTIAL = "partial"; 125 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 126 private static final String ATTR_USER_VERSION = "version"; 127 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 128 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 129 private static final String ATTR_SEED_ACCOUNT_NAME = "seedAccountName"; 130 private static final String ATTR_SEED_ACCOUNT_TYPE = "seedAccountType"; 131 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 132 private static final String TAG_USERS = "users"; 133 private static final String TAG_USER = "user"; 134 private static final String TAG_RESTRICTIONS = "restrictions"; 135 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 136 private static final String TAG_ENTRY = "entry"; 137 private static final String TAG_VALUE = "value"; 138 private static final String TAG_SEED_ACCOUNT_OPTIONS = "seedAccountOptions"; 139 private static final String ATTR_KEY = "key"; 140 private static final String ATTR_VALUE_TYPE = "type"; 141 private static final String ATTR_MULTIPLE = "m"; 142 143 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 144 private static final String ATTR_TYPE_STRING = "s"; 145 private static final String ATTR_TYPE_BOOLEAN = "b"; 146 private static final String ATTR_TYPE_INTEGER = "i"; 147 private static final String ATTR_TYPE_BUNDLE = "B"; 148 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 149 150 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 151 private static final String USER_LIST_FILENAME = "userlist.xml"; 152 private static final String USER_PHOTO_FILENAME = "photo.png"; 153 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 154 155 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 156 private static final String XML_SUFFIX = ".xml"; 157 158 private static final int MIN_USER_ID = 10; 159 // We need to keep process uid within Integer.MAX_VALUE. 160 private static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 161 162 private static final int USER_VERSION = 6; 163 164 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 165 166 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 167 // without first making sure that the rest of the framework is prepared for it. 168 private static final int MAX_MANAGED_PROFILES = 1; 169 170 static final int WRITE_USER_MSG = 1; 171 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 172 173 private static final String XATTR_SERIAL = "user.serial"; 174 175 // Tron counters 176 private static final String TRON_GUEST_CREATED = "users_guest_created"; 177 private static final String TRON_USER_CREATED = "users_user_created"; 178 179 private final Context mContext; 180 private final PackageManagerService mPm; 181 private final Object mPackagesLock; 182 // Short-term lock for internal state, when interaction/sync with PM is not required 183 private final Object mUsersLock = new Object(); 184 private final Object mRestrictionsLock = new Object(); 185 186 private final Handler mHandler; 187 188 private final File mUsersDir; 189 private final File mUserListFile; 190 191 /** 192 * User-related information that is used for persisting to flash. Only UserInfo is 193 * directly exposed to other system apps. 194 */ 195 private static class UserData { 196 // Basic user information and properties 197 UserInfo info; 198 // Account name used when there is a strong association between a user and an account 199 String account; 200 // Account information for seeding into a newly created user. This could also be 201 // used for login validation for an existing user, for updating their credentials. 202 // In the latter case, data may not need to be persisted as it is only valid for the 203 // current login session. 204 String seedAccountName; 205 String seedAccountType; 206 PersistableBundle seedAccountOptions; 207 // Whether to perist the seed account information to be available after a boot 208 boolean persistSeedData; 209 210 void clearSeedAccountData() { 211 seedAccountName = null; 212 seedAccountType = null; 213 seedAccountOptions = null; 214 persistSeedData = false; 215 } 216 } 217 218 @GuardedBy("mUsersLock") 219 private final SparseArray<UserData> mUsers = new SparseArray<>(); 220 221 /** 222 * User restrictions set via UserManager. This doesn't include restrictions set by 223 * device owner / profile owners. 224 * 225 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 226 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 227 * maybe shared between {@link #mBaseUserRestrictions} and 228 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 229 * (Otherwise we won't be able to detect what restrictions have changed in 230 * {@link #updateUserRestrictionsInternalLR}. 231 */ 232 @GuardedBy("mRestrictionsLock") 233 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 234 235 /** 236 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 237 * with device / profile owner restrictions. We'll initialize it lazily; use 238 * {@link #getEffectiveUserRestrictions} to access it. 239 * 240 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 241 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 242 * maybe shared between {@link #mBaseUserRestrictions} and 243 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 244 * (Otherwise we won't be able to detect what restrictions have changed in 245 * {@link #updateUserRestrictionsInternalLR}. 246 */ 247 @GuardedBy("mRestrictionsLock") 248 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 249 250 /** 251 * User restrictions that have already been applied in 252 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 253 * that have changed since the last 254 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 255 */ 256 @GuardedBy("mRestrictionsLock") 257 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 258 259 /** 260 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 261 * that should be applied to all users, including guests. 262 */ 263 @GuardedBy("mRestrictionsLock") 264 private Bundle mDevicePolicyGlobalUserRestrictions; 265 266 /** 267 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 268 * for each user. 269 */ 270 @GuardedBy("mRestrictionsLock") 271 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 272 273 @GuardedBy("mGuestRestrictions") 274 private final Bundle mGuestRestrictions = new Bundle(); 275 276 /** 277 * Set of user IDs being actively removed. Removed IDs linger in this set 278 * for several seconds to work around a VFS caching issue. 279 */ 280 @GuardedBy("mUsersLock") 281 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 282 283 @GuardedBy("mUsersLock") 284 private int[] mUserIds; 285 @GuardedBy("mPackagesLock") 286 private int mNextSerialNumber; 287 private int mUserVersion = 0; 288 289 private IAppOpsService mAppOpsService; 290 291 private final LocalService mLocalService; 292 293 @GuardedBy("mUsersLock") 294 private boolean mIsDeviceManaged; 295 296 @GuardedBy("mUsersLock") 297 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 298 299 @GuardedBy("mUserRestrictionsListeners") 300 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 301 new ArrayList<>(); 302 303 private final LockPatternUtils mLockPatternUtils; 304 305 private static UserManagerService sInstance; 306 307 public static UserManagerService getInstance() { 308 synchronized (UserManagerService.class) { 309 return sInstance; 310 } 311 } 312 313 @VisibleForTesting 314 UserManagerService(File dataDir) { 315 this(null, null, new Object(), dataDir); 316 } 317 318 /** 319 * Called by package manager to create the service. This is closely 320 * associated with the package manager, and the given lock is the 321 * package manager's own lock. 322 */ 323 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 324 this(context, pm, packagesLock, Environment.getDataDirectory()); 325 } 326 327 private UserManagerService(Context context, PackageManagerService pm, 328 Object packagesLock, File dataDir) { 329 mContext = context; 330 mPm = pm; 331 mPackagesLock = packagesLock; 332 mHandler = new MainHandler(); 333 synchronized (mPackagesLock) { 334 mUsersDir = new File(dataDir, USER_INFO_DIR); 335 mUsersDir.mkdirs(); 336 // Make zeroth user directory, for services to migrate their files to that location 337 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 338 userZeroDir.mkdirs(); 339 FileUtils.setPermissions(mUsersDir.toString(), 340 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 341 -1, -1); 342 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 343 initDefaultGuestRestrictions(); 344 readUserListLP(); 345 sInstance = this; 346 } 347 mLocalService = new LocalService(); 348 LocalServices.addService(UserManagerInternal.class, mLocalService); 349 mLockPatternUtils = new LockPatternUtils(mContext); 350 } 351 352 void systemReady() { 353 // Prune out any partially created, partially removed and ephemeral users. 354 ArrayList<UserInfo> partials = new ArrayList<>(); 355 synchronized (mUsersLock) { 356 final int userSize = mUsers.size(); 357 for (int i = 0; i < userSize; i++) { 358 UserInfo ui = mUsers.valueAt(i).info; 359 if ((ui.partial || ui.guestToRemove || ui.isEphemeral()) && i != 0) { 360 partials.add(ui); 361 } 362 } 363 } 364 final int partialsSize = partials.size(); 365 for (int i = 0; i < partialsSize; i++) { 366 UserInfo ui = partials.get(i); 367 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 368 + " (name=" + ui.name + ")"); 369 removeUserState(ui.id); 370 } 371 372 onUserForeground(UserHandle.USER_SYSTEM); 373 374 mAppOpsService = IAppOpsService.Stub.asInterface( 375 ServiceManager.getService(Context.APP_OPS_SERVICE)); 376 377 synchronized (mRestrictionsLock) { 378 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 379 } 380 } 381 382 @Override 383 public String getUserAccount(int userId) { 384 checkManageUserAndAcrossUsersFullPermission("get user account"); 385 synchronized (mUsersLock) { 386 return mUsers.get(userId).account; 387 } 388 } 389 390 @Override 391 public void setUserAccount(int userId, String accountName) { 392 checkManageUserAndAcrossUsersFullPermission("set user account"); 393 UserData userToUpdate = null; 394 synchronized (mPackagesLock) { 395 synchronized (mUsersLock) { 396 final UserData userData = mUsers.get(userId); 397 if (userData == null) { 398 Slog.e(LOG_TAG, "User not found for setting user account: u" + userId); 399 return; 400 } 401 String currentAccount = userData.account; 402 if (!Objects.equal(currentAccount, accountName)) { 403 userData.account = accountName; 404 userToUpdate = userData; 405 } 406 } 407 408 if (userToUpdate != null) { 409 writeUserLP(userToUpdate); 410 } 411 } 412 } 413 414 @Override 415 public UserInfo getPrimaryUser() { 416 checkManageUsersPermission("query users"); 417 synchronized (mUsersLock) { 418 final int userSize = mUsers.size(); 419 for (int i = 0; i < userSize; i++) { 420 UserInfo ui = mUsers.valueAt(i).info; 421 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 422 return ui; 423 } 424 } 425 } 426 return null; 427 } 428 429 @Override 430 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 431 checkManageUsersPermission("query users"); 432 synchronized (mUsersLock) { 433 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 434 final int userSize = mUsers.size(); 435 for (int i = 0; i < userSize; i++) { 436 UserInfo ui = mUsers.valueAt(i).info; 437 if (ui.partial) { 438 continue; 439 } 440 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 441 users.add(ui); 442 } 443 } 444 return users; 445 } 446 } 447 448 @Override 449 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 450 if (userId != UserHandle.getCallingUserId()) { 451 checkManageUsersPermission("getting profiles related to user " + userId); 452 } 453 final long ident = Binder.clearCallingIdentity(); 454 try { 455 synchronized (mUsersLock) { 456 return getProfilesLU(userId, enabledOnly); 457 } 458 } finally { 459 Binder.restoreCallingIdentity(ident); 460 } 461 } 462 463 /** Assume permissions already checked and caller's identity cleared */ 464 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly) { 465 UserInfo user = getUserInfoLU(userId); 466 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 467 if (user == null) { 468 // Probably a dying user 469 return users; 470 } 471 final int userSize = mUsers.size(); 472 for (int i = 0; i < userSize; i++) { 473 UserInfo profile = mUsers.valueAt(i).info; 474 if (!isProfileOf(user, profile)) { 475 continue; 476 } 477 if (enabledOnly && !profile.isEnabled()) { 478 continue; 479 } 480 if (mRemovingUserIds.get(profile.id)) { 481 continue; 482 } 483 users.add(profile); 484 } 485 return users; 486 } 487 488 @Override 489 public int getCredentialOwnerProfile(int userHandle) { 490 checkManageUsersPermission("get the credential owner"); 491 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 492 synchronized (mUsersLock) { 493 UserInfo profileParent = getProfileParentLU(userHandle); 494 if (profileParent != null) { 495 return profileParent.id; 496 } 497 } 498 } 499 500 return userHandle; 501 } 502 503 @Override 504 public boolean isSameProfileGroup(int userId, int otherUserId) { 505 if (userId == otherUserId) return true; 506 checkManageUsersPermission("check if in the same profile group"); 507 synchronized (mPackagesLock) { 508 return isSameProfileGroupLP(userId, otherUserId); 509 } 510 } 511 512 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 513 synchronized (mUsersLock) { 514 UserInfo userInfo = getUserInfoLU(userId); 515 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 516 return false; 517 } 518 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 519 if (otherUserInfo == null 520 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 521 return false; 522 } 523 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 524 } 525 } 526 527 @Override 528 public UserInfo getProfileParent(int userHandle) { 529 checkManageUsersPermission("get the profile parent"); 530 synchronized (mUsersLock) { 531 return getProfileParentLU(userHandle); 532 } 533 } 534 535 private UserInfo getProfileParentLU(int userHandle) { 536 UserInfo profile = getUserInfoLU(userHandle); 537 if (profile == null) { 538 return null; 539 } 540 int parentUserId = profile.profileGroupId; 541 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 542 return null; 543 } else { 544 return getUserInfoLU(parentUserId); 545 } 546 } 547 548 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 549 return user.id == profile.id || 550 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 551 && user.profileGroupId == profile.profileGroupId); 552 } 553 554 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 555 UserHandle parentHandle, Bundle extras) { 556 // Send intent to profile 557 Intent intent = new Intent(Intent.ACTION_AVAILABILITY_CHANGED); 558 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 559 intent.putExtras(extras); 560 mContext.sendBroadcastAsUser(intent, profileHandle); 561 562 // Send intent to parent 563 if (parentHandle != null) { 564 intent = new Intent(Intent.ACTION_MANAGED_PROFILE_AVAILABILITY_CHANGED); 565 intent.putExtra(Intent.EXTRA_USER, profileHandle); 566 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 567 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 568 intent.putExtras(extras); 569 mContext.sendBroadcastAsUser(intent, parentHandle); 570 } 571 } 572 573 @Override 574 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 575 checkManageUsersPermission("silence profile"); 576 boolean changed = false; 577 UserInfo profile, parent; 578 synchronized (mPackagesLock) { 579 synchronized (mUsersLock) { 580 profile = getUserInfoLU(userHandle); 581 parent = getProfileParentLU(userHandle); 582 583 } 584 if (profile == null || !profile.isManagedProfile()) { 585 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 586 } 587 if (profile.isQuietModeEnabled() != enableQuietMode) { 588 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 589 writeUserLP(getUserDataLU(profile.id)); 590 changed = true; 591 } 592 } 593 if (changed) { 594 Bundle extras = new Bundle(); 595 extras.putBoolean(Intent.EXTRA_QUIET_MODE, enableQuietMode); 596 broadcastProfileAvailabilityChanges(profile.getUserHandle(), 597 parent != null ? parent.getUserHandle() : null, extras); 598 } 599 } 600 601 @Override 602 public boolean isQuietModeEnabled(int userHandle) { 603 synchronized (mPackagesLock) { 604 UserInfo info; 605 synchronized (mUsersLock) { 606 info = getUserInfoLU(userHandle); 607 } 608 if (info == null || !info.isManagedProfile()) { 609 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 610 } 611 return info.isQuietModeEnabled(); 612 } 613 } 614 615 @Override 616 public void setUserEnabled(int userId) { 617 checkManageUsersPermission("enable user"); 618 synchronized (mPackagesLock) { 619 UserInfo info; 620 synchronized (mUsersLock) { 621 info = getUserInfoLU(userId); 622 } 623 if (info != null && !info.isEnabled()) { 624 info.flags ^= UserInfo.FLAG_DISABLED; 625 writeUserLP(getUserDataLU(info.id)); 626 } 627 } 628 } 629 630 @Override 631 public UserInfo getUserInfo(int userId) { 632 checkManageUsersPermission("query user"); 633 synchronized (mUsersLock) { 634 return getUserInfoLU(userId); 635 } 636 } 637 638 @Override 639 public boolean isRestricted() { 640 synchronized (mUsersLock) { 641 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 642 } 643 } 644 645 @Override 646 public boolean canHaveRestrictedProfile(int userId) { 647 checkManageUsersPermission("canHaveRestrictedProfile"); 648 synchronized (mUsersLock) { 649 final UserInfo userInfo = getUserInfoLU(userId); 650 if (userInfo == null || !userInfo.canHaveProfile()) { 651 return false; 652 } 653 if (!userInfo.isAdmin()) { 654 return false; 655 } 656 // restricted profile can be created if there is no DO set and the admin user has no PO; 657 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 658 } 659 } 660 661 /* 662 * Should be locked on mUsers before calling this. 663 */ 664 private UserInfo getUserInfoLU(int userId) { 665 final UserData userData = mUsers.get(userId); 666 // If it is partial and not in the process of being removed, return as unknown user. 667 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 668 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 669 return null; 670 } 671 return userData != null ? userData.info : null; 672 } 673 674 private UserData getUserDataLU(int userId) { 675 final UserData userData = mUsers.get(userId); 676 // If it is partial and not in the process of being removed, return as unknown user. 677 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 678 return null; 679 } 680 return userData; 681 } 682 683 /** 684 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 685 * <p>No permissions checking or any addition checks are made</p> 686 */ 687 private UserInfo getUserInfoNoChecks(int userId) { 688 synchronized (mUsersLock) { 689 final UserData userData = mUsers.get(userId); 690 return userData != null ? userData.info : null; 691 } 692 } 693 694 /** 695 * Obtains {@link #mUsersLock} and return UserData from mUsers. 696 * <p>No permissions checking or any addition checks are made</p> 697 */ 698 private UserData getUserDataNoChecks(int userId) { 699 synchronized (mUsersLock) { 700 return mUsers.get(userId); 701 } 702 } 703 704 /** Called by PackageManagerService */ 705 public boolean exists(int userId) { 706 return getUserInfoNoChecks(userId) != null; 707 } 708 709 @Override 710 public void setUserName(int userId, String name) { 711 checkManageUsersPermission("rename users"); 712 boolean changed = false; 713 synchronized (mPackagesLock) { 714 UserData userData = getUserDataNoChecks(userId); 715 if (userData == null || userData.info.partial) { 716 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 717 return; 718 } 719 if (name != null && !name.equals(userData.info.name)) { 720 userData.info.name = name; 721 writeUserLP(userData); 722 changed = true; 723 } 724 } 725 if (changed) { 726 sendUserInfoChangedBroadcast(userId); 727 } 728 } 729 730 @Override 731 public void setUserIcon(int userId, Bitmap bitmap) { 732 checkManageUsersPermission("update users"); 733 if (hasUserRestriction(UserManager.DISALLOW_SET_USER_ICON, userId)) { 734 Log.w(LOG_TAG, "Cannot set user icon. DISALLOW_SET_USER_ICON is enabled."); 735 return; 736 } 737 mLocalService.setUserIcon(userId, bitmap); 738 } 739 740 741 742 private void sendUserInfoChangedBroadcast(int userId) { 743 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 744 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 745 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 746 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 747 } 748 749 @Override 750 public ParcelFileDescriptor getUserIcon(int userId) { 751 String iconPath; 752 synchronized (mPackagesLock) { 753 UserInfo info = getUserInfoNoChecks(userId); 754 if (info == null || info.partial) { 755 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + userId); 756 return null; 757 } 758 int callingGroupId = getUserInfoNoChecks(UserHandle.getCallingUserId()).profileGroupId; 759 if (callingGroupId == UserInfo.NO_PROFILE_GROUP_ID 760 || callingGroupId != info.profileGroupId) { 761 checkManageUsersPermission("get the icon of a user who is not related"); 762 } 763 if (info.iconPath == null) { 764 return null; 765 } 766 iconPath = info.iconPath; 767 } 768 769 try { 770 return ParcelFileDescriptor.open( 771 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 772 } catch (FileNotFoundException e) { 773 Log.e(LOG_TAG, "Couldn't find icon file", e); 774 } 775 return null; 776 } 777 778 public void makeInitialized(int userId) { 779 checkManageUsersPermission("makeInitialized"); 780 boolean scheduleWriteUser = false; 781 UserData userData; 782 synchronized (mUsersLock) { 783 userData = mUsers.get(userId); 784 if (userData == null || userData.info.partial) { 785 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 786 return; 787 } 788 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 789 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 790 scheduleWriteUser = true; 791 } 792 } 793 if (scheduleWriteUser) { 794 scheduleWriteUser(userData); 795 } 796 } 797 798 /** 799 * If default guest restrictions haven't been initialized yet, add the basic 800 * restrictions. 801 */ 802 private void initDefaultGuestRestrictions() { 803 synchronized (mGuestRestrictions) { 804 if (mGuestRestrictions.isEmpty()) { 805 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 806 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 807 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 808 } 809 } 810 } 811 812 @Override 813 public Bundle getDefaultGuestRestrictions() { 814 checkManageUsersPermission("getDefaultGuestRestrictions"); 815 synchronized (mGuestRestrictions) { 816 return new Bundle(mGuestRestrictions); 817 } 818 } 819 820 @Override 821 public void setDefaultGuestRestrictions(Bundle restrictions) { 822 checkManageUsersPermission("setDefaultGuestRestrictions"); 823 synchronized (mGuestRestrictions) { 824 mGuestRestrictions.clear(); 825 mGuestRestrictions.putAll(restrictions); 826 } 827 synchronized (mPackagesLock) { 828 writeUserListLP(); 829 } 830 } 831 832 /** 833 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 834 */ 835 void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle local, 836 @Nullable Bundle global) { 837 Preconditions.checkNotNull(local); 838 boolean globalChanged = false; 839 boolean localChanged; 840 synchronized (mRestrictionsLock) { 841 if (global != null) { 842 // Update global. 843 globalChanged = !UserRestrictionsUtils.areEqual( 844 mDevicePolicyGlobalUserRestrictions, global); 845 if (globalChanged) { 846 mDevicePolicyGlobalUserRestrictions = global; 847 } 848 } 849 { 850 // Update local. 851 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 852 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 853 if (localChanged) { 854 mDevicePolicyLocalUserRestrictions.put(userId, local); 855 } 856 } 857 } 858 if (DBG) { 859 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 860 + " global=" + global + (globalChanged ? " (changed)" : "") 861 + " local=" + local + (localChanged ? " (changed)" : "") 862 ); 863 } 864 // Don't call them within the mRestrictionsLock. 865 synchronized (mPackagesLock) { 866 if (globalChanged) { 867 writeUserListLP(); 868 } 869 if (localChanged) { 870 writeUserLP(getUserDataNoChecks(userId)); 871 } 872 } 873 874 synchronized (mRestrictionsLock) { 875 if (globalChanged) { 876 applyUserRestrictionsForAllUsersLR(); 877 } else if (localChanged) { 878 applyUserRestrictionsLR(userId); 879 } 880 } 881 } 882 883 @GuardedBy("mRestrictionsLock") 884 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 885 final Bundle baseRestrictions = 886 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 887 final Bundle global = mDevicePolicyGlobalUserRestrictions; 888 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 889 890 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 891 // Common case first. 892 return baseRestrictions; 893 } 894 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 895 UserRestrictionsUtils.merge(effective, global); 896 UserRestrictionsUtils.merge(effective, local); 897 898 return effective; 899 } 900 901 @GuardedBy("mRestrictionsLock") 902 private void invalidateEffectiveUserRestrictionsLR(int userId) { 903 if (DBG) { 904 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 905 } 906 mCachedEffectiveUserRestrictions.remove(userId); 907 } 908 909 private Bundle getEffectiveUserRestrictions(int userId) { 910 synchronized (mRestrictionsLock) { 911 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 912 if (restrictions == null) { 913 restrictions = computeEffectiveUserRestrictionsLR(userId); 914 mCachedEffectiveUserRestrictions.put(userId, restrictions); 915 } 916 return restrictions; 917 } 918 } 919 920 /** @return a specific user restriction that's in effect currently. */ 921 @Override 922 public boolean hasUserRestriction(String restrictionKey, int userId) { 923 Bundle restrictions = getEffectiveUserRestrictions(userId); 924 return restrictions != null && restrictions.getBoolean(restrictionKey); 925 } 926 927 /** 928 * @return UserRestrictions that are in effect currently. This always returns a new 929 * {@link Bundle}. 930 */ 931 @Override 932 public Bundle getUserRestrictions(int userId) { 933 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 934 } 935 936 @Override 937 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 938 checkManageUsersPermission("hasBaseUserRestriction"); 939 synchronized (mRestrictionsLock) { 940 Bundle bundle = mBaseUserRestrictions.get(userId); 941 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 942 } 943 } 944 945 @Override 946 public void setUserRestriction(String key, boolean value, int userId) { 947 checkManageUsersPermission("setUserRestriction"); 948 synchronized (mRestrictionsLock) { 949 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 950 // a copy. 951 final Bundle newRestrictions = UserRestrictionsUtils.clone( 952 mBaseUserRestrictions.get(userId)); 953 newRestrictions.putBoolean(key, value); 954 955 updateUserRestrictionsInternalLR(newRestrictions, userId); 956 } 957 } 958 959 /** 960 * Optionally updating user restrictions, calculate the effective user restrictions and also 961 * propagate to other services and system settings. 962 * 963 * @param newRestrictions User restrictions to set. 964 * If null, will not update user restrictions and only does the propagation. 965 * @param userId target user ID. 966 */ 967 @GuardedBy("mRestrictionsLock") 968 private void updateUserRestrictionsInternalLR( 969 @Nullable Bundle newRestrictions, int userId) { 970 971 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 972 mAppliedUserRestrictions.get(userId)); 973 974 // Update base restrictions. 975 if (newRestrictions != null) { 976 // If newRestrictions == the current one, it's probably a bug. 977 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 978 979 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 980 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 981 != newRestrictions); 982 983 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 984 mBaseUserRestrictions.put(userId, newRestrictions); 985 scheduleWriteUser(getUserDataNoChecks(userId)); 986 } 987 } 988 989 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 990 991 mCachedEffectiveUserRestrictions.put(userId, effective); 992 993 // Apply the new restrictions. 994 if (DBG) { 995 debug("Applying user restrictions: userId=" + userId 996 + " new=" + effective + " prev=" + prevAppliedRestrictions); 997 } 998 999 if (mAppOpsService != null) { // We skip it until system-ready. 1000 final long token = Binder.clearCallingIdentity(); 1001 try { 1002 mAppOpsService.setUserRestrictions(effective, userId); 1003 } catch (RemoteException e) { 1004 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1005 } finally { 1006 Binder.restoreCallingIdentity(token); 1007 } 1008 } 1009 1010 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1011 1012 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1013 } 1014 1015 private void propagateUserRestrictionsLR(final int userId, 1016 Bundle newRestrictions, Bundle prevRestrictions) { 1017 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1018 // actually, but we still need some kind of synchronization otherwise we might end up 1019 // calling listeners out-of-order, thus "LR". 1020 1021 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1022 return; 1023 } 1024 1025 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1026 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1027 1028 mHandler.post(new Runnable() { 1029 @Override 1030 public void run() { 1031 UserRestrictionsUtils.applyUserRestrictions( 1032 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1033 1034 final UserRestrictionsListener[] listeners; 1035 synchronized (mUserRestrictionsListeners) { 1036 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1037 mUserRestrictionsListeners.toArray(listeners); 1038 } 1039 for (int i = 0; i < listeners.length; i++) { 1040 listeners[i].onUserRestrictionsChanged(userId, 1041 newRestrictionsFinal, prevRestrictionsFinal); 1042 } 1043 } 1044 }); 1045 } 1046 1047 // Package private for the inner class. 1048 void applyUserRestrictionsLR(int userId) { 1049 updateUserRestrictionsInternalLR(null, userId); 1050 } 1051 1052 @GuardedBy("mRestrictionsLock") 1053 // Package private for the inner class. 1054 void applyUserRestrictionsForAllUsersLR() { 1055 if (DBG) { 1056 debug("applyUserRestrictionsForAllUsersLR"); 1057 } 1058 // First, invalidate all cached values. 1059 mCachedEffectiveUserRestrictions.clear(); 1060 1061 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 1062 // it on a handler. 1063 final Runnable r = new Runnable() { 1064 @Override 1065 public void run() { 1066 // Then get the list of running users. 1067 final int[] runningUsers; 1068 try { 1069 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 1070 } catch (RemoteException e) { 1071 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 1072 return; 1073 } 1074 // Then re-calculate the effective restrictions and apply, only for running users. 1075 // It's okay if a new user has started after the getRunningUserIds() call, 1076 // because we'll do the same thing (re-calculate the restrictions and apply) 1077 // when we start a user. 1078 synchronized (mRestrictionsLock) { 1079 for (int i = 0; i < runningUsers.length; i++) { 1080 applyUserRestrictionsLR(runningUsers[i]); 1081 } 1082 } 1083 } 1084 }; 1085 mHandler.post(r); 1086 } 1087 1088 /** 1089 * Check if we've hit the limit of how many users can be created. 1090 */ 1091 private boolean isUserLimitReached() { 1092 int count; 1093 synchronized (mUsersLock) { 1094 count = getAliveUsersExcludingGuestsCountLU(); 1095 } 1096 return count >= UserManager.getMaxSupportedUsers(); 1097 } 1098 1099 @Override 1100 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1101 checkManageUsersPermission("check if more managed profiles can be added."); 1102 if (ActivityManager.isLowRamDeviceStatic()) { 1103 return false; 1104 } 1105 if (!mContext.getPackageManager().hasSystemFeature( 1106 PackageManager.FEATURE_MANAGED_USERS)) { 1107 return false; 1108 } 1109 // Limit number of managed profiles that can be created 1110 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1111 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1112 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1113 return false; 1114 } 1115 synchronized(mUsersLock) { 1116 UserInfo userInfo = getUserInfoLU(userId); 1117 if (!userInfo.canHaveProfile()) { 1118 return false; 1119 } 1120 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1121 - profilesRemovedCount; 1122 // We allow creating a managed profile in the special case where there is only one user. 1123 return usersCountAfterRemoving == 1 1124 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1125 } 1126 } 1127 1128 private int getAliveUsersExcludingGuestsCountLU() { 1129 int aliveUserCount = 0; 1130 final int totalUserCount = mUsers.size(); 1131 // Skip over users being removed 1132 for (int i = 0; i < totalUserCount; i++) { 1133 UserInfo user = mUsers.valueAt(i).info; 1134 if (!mRemovingUserIds.get(user.id) 1135 && !user.isGuest() && !user.partial) { 1136 aliveUserCount++; 1137 } 1138 } 1139 return aliveUserCount; 1140 } 1141 1142 /** 1143 * Enforces that only the system UID or root's UID or apps that have the 1144 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1145 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1146 * permissions can make certain calls to the UserManager. 1147 * 1148 * @param message used as message if SecurityException is thrown 1149 * @throws SecurityException if the caller does not have enough privilege. 1150 */ 1151 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1152 final int uid = Binder.getCallingUid(); 1153 if (uid != Process.SYSTEM_UID && uid != 0 1154 && ActivityManager.checkComponentPermission( 1155 Manifest.permission.MANAGE_USERS, 1156 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1157 && ActivityManager.checkComponentPermission( 1158 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1159 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1160 throw new SecurityException( 1161 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1162 + message); 1163 } 1164 } 1165 1166 /** 1167 * Enforces that only the system UID or root's UID or apps that have the 1168 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1169 * permission can make certain calls to the UserManager. 1170 * 1171 * @param message used as message if SecurityException is thrown 1172 * @throws SecurityException if the caller is not system or root 1173 */ 1174 private static final void checkManageUsersPermission(String message) { 1175 final int uid = Binder.getCallingUid(); 1176 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID 1177 && ActivityManager.checkComponentPermission( 1178 android.Manifest.permission.MANAGE_USERS, 1179 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1180 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1181 } 1182 } 1183 1184 /** 1185 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1186 * UserManager. 1187 * 1188 * @param message used as message if SecurityException is thrown 1189 * @throws SecurityException if the caller is not system or root 1190 */ 1191 private static void checkSystemOrRoot(String message) { 1192 final int uid = Binder.getCallingUid(); 1193 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1194 throw new SecurityException("Only system may: " + message); 1195 } 1196 } 1197 1198 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1199 try { 1200 File dir = new File(mUsersDir, Integer.toString(info.id)); 1201 File file = new File(dir, USER_PHOTO_FILENAME); 1202 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1203 if (!dir.exists()) { 1204 dir.mkdir(); 1205 FileUtils.setPermissions( 1206 dir.getPath(), 1207 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1208 -1, -1); 1209 } 1210 FileOutputStream os; 1211 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1212 && tmp.renameTo(file)) { 1213 info.iconPath = file.getAbsolutePath(); 1214 } 1215 try { 1216 os.close(); 1217 } catch (IOException ioe) { 1218 // What the ... ! 1219 } 1220 tmp.delete(); 1221 } catch (FileNotFoundException e) { 1222 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1223 } 1224 } 1225 1226 /** 1227 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1228 * cache it elsewhere. 1229 * @return the array of user ids. 1230 */ 1231 public int[] getUserIds() { 1232 synchronized (mUsersLock) { 1233 return mUserIds; 1234 } 1235 } 1236 1237 private void readUserListLP() { 1238 if (!mUserListFile.exists()) { 1239 fallbackToSingleUserLP(); 1240 return; 1241 } 1242 FileInputStream fis = null; 1243 AtomicFile userListFile = new AtomicFile(mUserListFile); 1244 try { 1245 fis = userListFile.openRead(); 1246 XmlPullParser parser = Xml.newPullParser(); 1247 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1248 int type; 1249 while ((type = parser.next()) != XmlPullParser.START_TAG 1250 && type != XmlPullParser.END_DOCUMENT) { 1251 // Skip 1252 } 1253 1254 if (type != XmlPullParser.START_TAG) { 1255 Slog.e(LOG_TAG, "Unable to read user list"); 1256 fallbackToSingleUserLP(); 1257 return; 1258 } 1259 1260 mNextSerialNumber = -1; 1261 if (parser.getName().equals(TAG_USERS)) { 1262 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1263 if (lastSerialNumber != null) { 1264 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1265 } 1266 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1267 if (versionNumber != null) { 1268 mUserVersion = Integer.parseInt(versionNumber); 1269 } 1270 } 1271 1272 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1273 1274 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1275 if (type == XmlPullParser.START_TAG) { 1276 final String name = parser.getName(); 1277 if (name.equals(TAG_USER)) { 1278 String id = parser.getAttributeValue(null, ATTR_ID); 1279 1280 UserData userData = readUserLP(Integer.parseInt(id)); 1281 1282 if (userData != null) { 1283 synchronized (mUsersLock) { 1284 mUsers.put(userData.info.id, userData); 1285 if (mNextSerialNumber < 0 1286 || mNextSerialNumber <= userData.info.id) { 1287 mNextSerialNumber = userData.info.id + 1; 1288 } 1289 } 1290 } 1291 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1292 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1293 && type != XmlPullParser.END_TAG) { 1294 if (type == XmlPullParser.START_TAG) { 1295 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1296 synchronized (mGuestRestrictions) { 1297 UserRestrictionsUtils 1298 .readRestrictions(parser, mGuestRestrictions); 1299 } 1300 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1301 ) { 1302 UserRestrictionsUtils.readRestrictions(parser, 1303 newDevicePolicyGlobalUserRestrictions); 1304 } 1305 break; 1306 } 1307 } 1308 } 1309 } 1310 } 1311 synchronized (mRestrictionsLock) { 1312 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1313 } 1314 updateUserIds(); 1315 upgradeIfNecessaryLP(); 1316 } catch (IOException | XmlPullParserException e) { 1317 fallbackToSingleUserLP(); 1318 } finally { 1319 IoUtils.closeQuietly(fis); 1320 } 1321 } 1322 1323 /** 1324 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1325 */ 1326 private void upgradeIfNecessaryLP() { 1327 final int originalVersion = mUserVersion; 1328 int userVersion = mUserVersion; 1329 if (userVersion < 1) { 1330 // Assign a proper name for the owner, if not initialized correctly before 1331 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1332 if ("Primary".equals(userData.info.name)) { 1333 userData.info.name = 1334 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1335 scheduleWriteUser(userData); 1336 } 1337 userVersion = 1; 1338 } 1339 1340 if (userVersion < 2) { 1341 // Owner should be marked as initialized 1342 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1343 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1344 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1345 scheduleWriteUser(userData); 1346 } 1347 userVersion = 2; 1348 } 1349 1350 1351 if (userVersion < 4) { 1352 userVersion = 4; 1353 } 1354 1355 if (userVersion < 5) { 1356 initDefaultGuestRestrictions(); 1357 userVersion = 5; 1358 } 1359 1360 if (userVersion < 6) { 1361 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1362 synchronized (mUsersLock) { 1363 for (int i = 0; i < mUsers.size(); i++) { 1364 UserData userData = mUsers.valueAt(i); 1365 // In non-split mode, only user 0 can have restricted profiles 1366 if (!splitSystemUser && userData.info.isRestricted() 1367 && (userData.info.restrictedProfileParentId 1368 == UserInfo.NO_PROFILE_GROUP_ID)) { 1369 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1370 scheduleWriteUser(userData); 1371 } 1372 } 1373 } 1374 userVersion = 6; 1375 } 1376 1377 if (userVersion < USER_VERSION) { 1378 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1379 + USER_VERSION); 1380 } else { 1381 mUserVersion = userVersion; 1382 1383 if (originalVersion < mUserVersion) { 1384 writeUserListLP(); 1385 } 1386 } 1387 } 1388 1389 private void fallbackToSingleUserLP() { 1390 int flags = UserInfo.FLAG_INITIALIZED; 1391 // In split system user mode, the admin and primary flags are assigned to the first human 1392 // user. 1393 if (!UserManager.isSplitSystemUser()) { 1394 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1395 } 1396 // Create the system user 1397 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, 1398 mContext.getResources().getString(com.android.internal.R.string.owner_name), null, 1399 flags); 1400 UserData userData = new UserData(); 1401 userData.info = system; 1402 synchronized (mUsersLock) { 1403 mUsers.put(system.id, userData); 1404 } 1405 mNextSerialNumber = MIN_USER_ID; 1406 mUserVersion = USER_VERSION; 1407 1408 Bundle restrictions = new Bundle(); 1409 synchronized (mRestrictionsLock) { 1410 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1411 } 1412 1413 updateUserIds(); 1414 initDefaultGuestRestrictions(); 1415 1416 writeUserListLP(); 1417 writeUserLP(userData); 1418 } 1419 1420 private void scheduleWriteUser(UserData UserData) { 1421 if (DBG) { 1422 debug("scheduleWriteUser"); 1423 } 1424 // No need to wrap it within a lock -- worst case, we'll just post the same message 1425 // twice. 1426 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1427 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1428 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1429 } 1430 } 1431 1432 /* 1433 * Writes the user file in this format: 1434 * 1435 * <user flags="20039023" id="0"> 1436 * <name>Primary</name> 1437 * </user> 1438 */ 1439 private void writeUserLP(UserData userData) { 1440 if (DBG) { 1441 debug("writeUserLP " + userData); 1442 } 1443 FileOutputStream fos = null; 1444 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1445 try { 1446 fos = userFile.startWrite(); 1447 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1448 1449 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1450 final XmlSerializer serializer = new FastXmlSerializer(); 1451 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1452 serializer.startDocument(null, true); 1453 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1454 1455 final UserInfo userInfo = userData.info; 1456 serializer.startTag(null, TAG_USER); 1457 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1458 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1459 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1460 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1461 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1462 Long.toString(userInfo.lastLoggedInTime)); 1463 if (userInfo.iconPath != null) { 1464 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1465 } 1466 if (userInfo.partial) { 1467 serializer.attribute(null, ATTR_PARTIAL, "true"); 1468 } 1469 if (userInfo.guestToRemove) { 1470 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1471 } 1472 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1473 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1474 Integer.toString(userInfo.profileGroupId)); 1475 } 1476 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1477 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1478 Integer.toString(userInfo.restrictedProfileParentId)); 1479 } 1480 // Write seed data 1481 if (userData.persistSeedData) { 1482 if (userData.seedAccountName != null) { 1483 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 1484 } 1485 if (userData.seedAccountType != null) { 1486 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 1487 } 1488 } 1489 serializer.startTag(null, TAG_NAME); 1490 serializer.text(userInfo.name); 1491 serializer.endTag(null, TAG_NAME); 1492 synchronized (mRestrictionsLock) { 1493 UserRestrictionsUtils.writeRestrictions(serializer, 1494 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1495 UserRestrictionsUtils.writeRestrictions(serializer, 1496 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1497 TAG_DEVICE_POLICY_RESTRICTIONS); 1498 } 1499 1500 if (userData.account != null) { 1501 serializer.startTag(null, TAG_ACCOUNT); 1502 serializer.text(userData.account); 1503 serializer.endTag(null, TAG_ACCOUNT); 1504 } 1505 1506 if (userData.persistSeedData && userData.seedAccountOptions != null) { 1507 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1508 userData.seedAccountOptions.saveToXml(serializer); 1509 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1510 } 1511 serializer.endTag(null, TAG_USER); 1512 1513 serializer.endDocument(); 1514 userFile.finishWrite(fos); 1515 } catch (Exception ioe) { 1516 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id + "\n" + ioe); 1517 userFile.failWrite(fos); 1518 } 1519 } 1520 1521 /* 1522 * Writes the user list file in this format: 1523 * 1524 * <users nextSerialNumber="3"> 1525 * <user id="0"></user> 1526 * <user id="2"></user> 1527 * </users> 1528 */ 1529 private void writeUserListLP() { 1530 if (DBG) { 1531 debug("writeUserList"); 1532 } 1533 FileOutputStream fos = null; 1534 AtomicFile userListFile = new AtomicFile(mUserListFile); 1535 try { 1536 fos = userListFile.startWrite(); 1537 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1538 1539 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1540 final XmlSerializer serializer = new FastXmlSerializer(); 1541 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1542 serializer.startDocument(null, true); 1543 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1544 1545 serializer.startTag(null, TAG_USERS); 1546 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1547 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1548 1549 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1550 synchronized (mGuestRestrictions) { 1551 UserRestrictionsUtils 1552 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1553 } 1554 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1555 synchronized (mRestrictionsLock) { 1556 UserRestrictionsUtils.writeRestrictions(serializer, 1557 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1558 } 1559 int[] userIdsToWrite; 1560 synchronized (mUsersLock) { 1561 userIdsToWrite = new int[mUsers.size()]; 1562 for (int i = 0; i < userIdsToWrite.length; i++) { 1563 UserInfo user = mUsers.valueAt(i).info; 1564 userIdsToWrite[i] = user.id; 1565 } 1566 } 1567 for (int id : userIdsToWrite) { 1568 serializer.startTag(null, TAG_USER); 1569 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1570 serializer.endTag(null, TAG_USER); 1571 } 1572 1573 serializer.endTag(null, TAG_USERS); 1574 1575 serializer.endDocument(); 1576 userListFile.finishWrite(fos); 1577 } catch (Exception e) { 1578 userListFile.failWrite(fos); 1579 Slog.e(LOG_TAG, "Error writing user list"); 1580 } 1581 } 1582 1583 private UserData readUserLP(int id) { 1584 int flags = 0; 1585 int serialNumber = id; 1586 String name = null; 1587 String account = null; 1588 String iconPath = null; 1589 long creationTime = 0L; 1590 long lastLoggedInTime = 0L; 1591 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 1592 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 1593 boolean partial = false; 1594 boolean guestToRemove = false; 1595 boolean persistSeedData = false; 1596 String seedAccountName = null; 1597 String seedAccountType = null; 1598 PersistableBundle seedAccountOptions = null; 1599 Bundle baseRestrictions = new Bundle(); 1600 Bundle localRestrictions = new Bundle(); 1601 1602 FileInputStream fis = null; 1603 try { 1604 AtomicFile userFile = 1605 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 1606 fis = userFile.openRead(); 1607 XmlPullParser parser = Xml.newPullParser(); 1608 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1609 int type; 1610 while ((type = parser.next()) != XmlPullParser.START_TAG 1611 && type != XmlPullParser.END_DOCUMENT) { 1612 // Skip 1613 } 1614 1615 if (type != XmlPullParser.START_TAG) { 1616 Slog.e(LOG_TAG, "Unable to read user " + id); 1617 return null; 1618 } 1619 1620 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 1621 int storedId = readIntAttribute(parser, ATTR_ID, -1); 1622 if (storedId != id) { 1623 Slog.e(LOG_TAG, "User id does not match the file name"); 1624 return null; 1625 } 1626 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 1627 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 1628 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 1629 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 1630 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 1631 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 1632 UserInfo.NO_PROFILE_GROUP_ID); 1633 restrictedProfileParentId = readIntAttribute(parser, 1634 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 1635 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 1636 if ("true".equals(valueString)) { 1637 partial = true; 1638 } 1639 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 1640 if ("true".equals(valueString)) { 1641 guestToRemove = true; 1642 } 1643 1644 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 1645 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 1646 if (seedAccountName != null || seedAccountType != null) { 1647 persistSeedData = true; 1648 } 1649 1650 int outerDepth = parser.getDepth(); 1651 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1652 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1653 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1654 continue; 1655 } 1656 String tag = parser.getName(); 1657 if (TAG_NAME.equals(tag)) { 1658 type = parser.next(); 1659 if (type == XmlPullParser.TEXT) { 1660 name = parser.getText(); 1661 } 1662 } else if (TAG_RESTRICTIONS.equals(tag)) { 1663 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 1664 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 1665 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 1666 } else if (TAG_ACCOUNT.equals(tag)) { 1667 type = parser.next(); 1668 if (type == XmlPullParser.TEXT) { 1669 account = parser.getText(); 1670 } 1671 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 1672 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 1673 persistSeedData = true; 1674 } 1675 } 1676 } 1677 1678 // Create the UserInfo object that gets passed around 1679 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 1680 userInfo.serialNumber = serialNumber; 1681 userInfo.creationTime = creationTime; 1682 userInfo.lastLoggedInTime = lastLoggedInTime; 1683 userInfo.partial = partial; 1684 userInfo.guestToRemove = guestToRemove; 1685 userInfo.profileGroupId = profileGroupId; 1686 userInfo.restrictedProfileParentId = restrictedProfileParentId; 1687 1688 // Create the UserData object that's internal to this class 1689 UserData userData = new UserData(); 1690 userData.info = userInfo; 1691 userData.account = account; 1692 userData.seedAccountName = seedAccountName; 1693 userData.seedAccountType = seedAccountType; 1694 userData.persistSeedData = persistSeedData; 1695 userData.seedAccountOptions = seedAccountOptions; 1696 1697 synchronized (mRestrictionsLock) { 1698 mBaseUserRestrictions.put(id, baseRestrictions); 1699 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 1700 } 1701 return userData; 1702 } catch (IOException ioe) { 1703 } catch (XmlPullParserException pe) { 1704 } finally { 1705 if (fis != null) { 1706 try { 1707 fis.close(); 1708 } catch (IOException e) { 1709 } 1710 } 1711 } 1712 return null; 1713 } 1714 1715 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1716 String valueString = parser.getAttributeValue(null, attr); 1717 if (valueString == null) return defaultValue; 1718 try { 1719 return Integer.parseInt(valueString); 1720 } catch (NumberFormatException nfe) { 1721 return defaultValue; 1722 } 1723 } 1724 1725 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1726 String valueString = parser.getAttributeValue(null, attr); 1727 if (valueString == null) return defaultValue; 1728 try { 1729 return Long.parseLong(valueString); 1730 } catch (NumberFormatException nfe) { 1731 return defaultValue; 1732 } 1733 } 1734 1735 private boolean isPackageInstalled(String pkg, int userId) { 1736 final ApplicationInfo info = mPm.getApplicationInfo(pkg, 1737 PackageManager.GET_UNINSTALLED_PACKAGES, 1738 userId); 1739 if (info == null || (info.flags&ApplicationInfo.FLAG_INSTALLED) == 0) { 1740 return false; 1741 } 1742 return true; 1743 } 1744 1745 /** 1746 * Removes the app restrictions file for a specific package and user id, if it exists. 1747 */ 1748 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1749 synchronized (mPackagesLock) { 1750 File dir = Environment.getUserSystemDirectory(userId); 1751 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1752 if (resFile.exists()) { 1753 resFile.delete(); 1754 } 1755 } 1756 } 1757 1758 @Override 1759 public UserInfo createProfileForUser(String name, int flags, int userId) { 1760 checkManageUsersPermission("Only the system can create users"); 1761 return createUserInternal(name, flags, userId); 1762 } 1763 1764 @Override 1765 public UserInfo createUser(String name, int flags) { 1766 checkManageUsersPermission("Only the system can create users"); 1767 return createUserInternal(name, flags, UserHandle.USER_NULL); 1768 } 1769 1770 private UserInfo createUserInternal(String name, int flags, int parentId) { 1771 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 1772 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1773 return null; 1774 } 1775 if (ActivityManager.isLowRamDeviceStatic()) { 1776 return null; 1777 } 1778 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1779 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 1780 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 1781 final long ident = Binder.clearCallingIdentity(); 1782 UserInfo userInfo; 1783 UserData userData; 1784 final int userId; 1785 try { 1786 synchronized (mPackagesLock) { 1787 UserData parent = null; 1788 if (parentId != UserHandle.USER_NULL) { 1789 synchronized (mUsersLock) { 1790 parent = getUserDataLU(parentId); 1791 } 1792 if (parent == null) return null; 1793 } 1794 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 1795 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 1796 return null; 1797 } 1798 if (!isGuest && !isManagedProfile && isUserLimitReached()) { 1799 // If we're not adding a guest user or a managed profile and the limit has 1800 // been reached, cannot add a user. 1801 return null; 1802 } 1803 // If we're adding a guest and there already exists one, bail. 1804 if (isGuest && findCurrentGuestUser() != null) { 1805 return null; 1806 } 1807 // In legacy mode, restricted profile's parent can only be the owner user 1808 if (isRestricted && !UserManager.isSplitSystemUser() 1809 && (parentId != UserHandle.USER_SYSTEM)) { 1810 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 1811 return null; 1812 } 1813 if (isRestricted && UserManager.isSplitSystemUser()) { 1814 if (parent == null) { 1815 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 1816 + "specified"); 1817 return null; 1818 } 1819 if (!parent.info.canHaveProfile()) { 1820 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 1821 + "created for the specified parent user id " + parentId); 1822 return null; 1823 } 1824 } 1825 // In split system user mode, we assign the first human user the primary flag. 1826 // And if there is no device owner, we also assign the admin flag to primary user. 1827 if (UserManager.isSplitSystemUser() 1828 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 1829 flags |= UserInfo.FLAG_PRIMARY; 1830 synchronized (mUsersLock) { 1831 if (!mIsDeviceManaged) { 1832 flags |= UserInfo.FLAG_ADMIN; 1833 } 1834 } 1835 } 1836 1837 // Add ephemeral flag to guests if required. Also inherit it from parent. 1838 boolean ephemeralGuests = Resources.getSystem() 1839 .getBoolean(com.android.internal.R.bool.config_guestUserEphemeral); 1840 if ((isGuest && ephemeralGuests) 1841 || (parent != null && parent.info.isEphemeral())) { 1842 flags |= UserInfo.FLAG_EPHEMERAL; 1843 } 1844 userId = getNextAvailableId(); 1845 userInfo = new UserInfo(userId, name, null, flags); 1846 userInfo.serialNumber = mNextSerialNumber++; 1847 long now = System.currentTimeMillis(); 1848 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1849 userInfo.partial = true; 1850 userData = new UserData(); 1851 userData.info = userInfo; 1852 Environment.getUserSystemDirectory(userInfo.id).mkdirs(); 1853 synchronized (mUsersLock) { 1854 mUsers.put(userId, userData); 1855 } 1856 writeUserListLP(); 1857 if (parent != null) { 1858 if (isManagedProfile) { 1859 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1860 parent.info.profileGroupId = parent.info.id; 1861 writeUserLP(parent); 1862 } 1863 userInfo.profileGroupId = parent.info.profileGroupId; 1864 } else if (isRestricted) { 1865 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 1866 parent.info.restrictedProfileParentId = parent.info.id; 1867 writeUserLP(parent); 1868 } 1869 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 1870 } 1871 } 1872 } 1873 final StorageManager storage = mContext.getSystemService(StorageManager.class); 1874 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 1875 for (VolumeInfo vol : storage.getWritablePrivateVolumes()) { 1876 final String volumeUuid = vol.getFsUuid(); 1877 try { 1878 final File userDir = Environment.getDataUserDirectory(volumeUuid, userId); 1879 storage.prepareUserStorage( 1880 volumeUuid, userId, userInfo.serialNumber, userInfo.isEphemeral()); 1881 enforceSerialNumber(userDir, userInfo.serialNumber); 1882 } catch (IOException e) { 1883 Log.wtf(LOG_TAG, "Failed to create user directory on " + volumeUuid, e); 1884 } 1885 } 1886 mPm.createNewUser(userId); 1887 userInfo.partial = false; 1888 synchronized (mPackagesLock) { 1889 writeUserLP(userData); 1890 } 1891 updateUserIds(); 1892 Bundle restrictions = new Bundle(); 1893 if (isGuest) { 1894 synchronized (mGuestRestrictions) { 1895 restrictions.putAll(mGuestRestrictions); 1896 } 1897 } 1898 synchronized (mRestrictionsLock) { 1899 mBaseUserRestrictions.append(userId, restrictions); 1900 } 1901 mPm.newUserCreated(userId); 1902 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 1903 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 1904 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 1905 android.Manifest.permission.MANAGE_USERS); 1906 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 1907 } finally { 1908 Binder.restoreCallingIdentity(ident); 1909 } 1910 return userInfo; 1911 } 1912 1913 /** 1914 * @hide 1915 */ 1916 @Override 1917 public UserInfo createRestrictedProfile(String name, int parentUserId) { 1918 checkManageUsersPermission("setupRestrictedProfile"); 1919 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 1920 if (user == null) { 1921 return null; 1922 } 1923 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 1924 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 1925 // the putIntForUser() will fail. 1926 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 1927 android.provider.Settings.Secure.LOCATION_MODE, 1928 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 1929 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 1930 return user; 1931 } 1932 1933 /** 1934 * Find the current guest user. If the Guest user is partial, 1935 * then do not include it in the results as it is about to die. 1936 */ 1937 private UserInfo findCurrentGuestUser() { 1938 synchronized (mUsersLock) { 1939 final int size = mUsers.size(); 1940 for (int i = 0; i < size; i++) { 1941 final UserInfo user = mUsers.valueAt(i).info; 1942 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 1943 return user; 1944 } 1945 } 1946 } 1947 return null; 1948 } 1949 1950 /** 1951 * Mark this guest user for deletion to allow us to create another guest 1952 * and switch to that user before actually removing this guest. 1953 * @param userHandle the userid of the current guest 1954 * @return whether the user could be marked for deletion 1955 */ 1956 @Override 1957 public boolean markGuestForDeletion(int userHandle) { 1958 checkManageUsersPermission("Only the system can remove users"); 1959 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1960 UserManager.DISALLOW_REMOVE_USER, false)) { 1961 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1962 return false; 1963 } 1964 1965 long ident = Binder.clearCallingIdentity(); 1966 try { 1967 final UserData userData; 1968 synchronized (mPackagesLock) { 1969 synchronized (mUsersLock) { 1970 userData = mUsers.get(userHandle); 1971 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 1972 return false; 1973 } 1974 } 1975 if (!userData.info.isGuest()) { 1976 return false; 1977 } 1978 // We set this to a guest user that is to be removed. This is a temporary state 1979 // where we are allowed to add new Guest users, even if this one is still not 1980 // removed. This user will still show up in getUserInfo() calls. 1981 // If we don't get around to removing this Guest user, it will be purged on next 1982 // startup. 1983 userData.info.guestToRemove = true; 1984 // Mark it as disabled, so that it isn't returned any more when 1985 // profiles are queried. 1986 userData.info.flags |= UserInfo.FLAG_DISABLED; 1987 writeUserLP(userData); 1988 } 1989 } finally { 1990 Binder.restoreCallingIdentity(ident); 1991 } 1992 return true; 1993 } 1994 1995 /** 1996 * Removes a user and all data directories created for that user. This method should be called 1997 * after the user's processes have been terminated. 1998 * @param userHandle the user's id 1999 */ 2000 @Override 2001 public boolean removeUser(int userHandle) { 2002 checkManageUsersPermission("Only the system can remove users"); 2003 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2004 UserManager.DISALLOW_REMOVE_USER, false)) { 2005 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2006 return false; 2007 } 2008 2009 long ident = Binder.clearCallingIdentity(); 2010 try { 2011 final UserData userData; 2012 int currentUser = ActivityManager.getCurrentUser(); 2013 if (currentUser == userHandle) { 2014 Log.w(LOG_TAG, "Current user cannot be removed"); 2015 return false; 2016 } 2017 synchronized (mPackagesLock) { 2018 synchronized (mUsersLock) { 2019 userData = mUsers.get(userHandle); 2020 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2021 return false; 2022 } 2023 2024 // We remember deleted user IDs to prevent them from being 2025 // reused during the current boot; they can still be reused 2026 // after a reboot. 2027 mRemovingUserIds.put(userHandle, true); 2028 } 2029 2030 try { 2031 mAppOpsService.removeUser(userHandle); 2032 } catch (RemoteException e) { 2033 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2034 } 2035 // Set this to a partially created user, so that the user will be purged 2036 // on next startup, in case the runtime stops now before stopping and 2037 // removing the user completely. 2038 userData.info.partial = true; 2039 // Mark it as disabled, so that it isn't returned any more when 2040 // profiles are queried. 2041 userData.info.flags |= UserInfo.FLAG_DISABLED; 2042 writeUserLP(userData); 2043 } 2044 2045 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2046 && userData.info.isManagedProfile()) { 2047 // Send broadcast to notify system that the user removed was a 2048 // managed user. 2049 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2050 } 2051 2052 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2053 int res; 2054 try { 2055 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 2056 new IStopUserCallback.Stub() { 2057 @Override 2058 public void userStopped(int userId) { 2059 finishRemoveUser(userId); 2060 } 2061 @Override 2062 public void userStopAborted(int userId) { 2063 } 2064 }); 2065 } catch (RemoteException e) { 2066 return false; 2067 } 2068 return res == ActivityManager.USER_OP_SUCCESS; 2069 } finally { 2070 Binder.restoreCallingIdentity(ident); 2071 } 2072 } 2073 2074 void finishRemoveUser(final int userHandle) { 2075 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2076 // Let other services shutdown any activity and clean up their state before completely 2077 // wiping the user's system directory and removing from the user list 2078 long ident = Binder.clearCallingIdentity(); 2079 try { 2080 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2081 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2082 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2083 android.Manifest.permission.MANAGE_USERS, 2084 2085 new BroadcastReceiver() { 2086 @Override 2087 public void onReceive(Context context, Intent intent) { 2088 if (DBG) { 2089 Slog.i(LOG_TAG, 2090 "USER_REMOVED broadcast sent, cleaning up user data " 2091 + userHandle); 2092 } 2093 new Thread() { 2094 @Override 2095 public void run() { 2096 // Clean up any ActivityManager state 2097 LocalServices.getService(ActivityManagerInternal.class) 2098 .onUserRemoved(userHandle); 2099 removeUserState(userHandle); 2100 } 2101 }.start(); 2102 } 2103 }, 2104 2105 null, Activity.RESULT_OK, null, null); 2106 } finally { 2107 Binder.restoreCallingIdentity(ident); 2108 } 2109 } 2110 2111 private void removeUserState(final int userHandle) { 2112 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2113 // Cleanup package manager settings 2114 mPm.cleanUpUser(this, userHandle); 2115 2116 // Remove this user from the list 2117 synchronized (mUsersLock) { 2118 mUsers.remove(userHandle); 2119 mIsUserManaged.delete(userHandle); 2120 } 2121 synchronized (mRestrictionsLock) { 2122 mBaseUserRestrictions.remove(userHandle); 2123 mAppliedUserRestrictions.remove(userHandle); 2124 mCachedEffectiveUserRestrictions.remove(userHandle); 2125 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2126 } 2127 // Remove user file 2128 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2129 userFile.delete(); 2130 // Update the user list 2131 synchronized (mPackagesLock) { 2132 writeUserListLP(); 2133 } 2134 updateUserIds(); 2135 File userDir = Environment.getUserSystemDirectory(userHandle); 2136 File renamedUserDir = Environment.getUserSystemDirectory(UserHandle.USER_NULL - userHandle); 2137 if (userDir.renameTo(renamedUserDir)) { 2138 removeDirectoryRecursive(renamedUserDir); 2139 } else { 2140 removeDirectoryRecursive(userDir); 2141 } 2142 } 2143 2144 private void removeDirectoryRecursive(File parent) { 2145 if (parent.isDirectory()) { 2146 String[] files = parent.list(); 2147 for (String filename : files) { 2148 File child = new File(parent, filename); 2149 removeDirectoryRecursive(child); 2150 } 2151 } 2152 parent.delete(); 2153 } 2154 2155 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2156 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2157 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2158 Intent.FLAG_RECEIVER_FOREGROUND); 2159 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2160 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2161 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2162 } 2163 2164 @Override 2165 public Bundle getApplicationRestrictions(String packageName) { 2166 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2167 } 2168 2169 @Override 2170 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2171 if (UserHandle.getCallingUserId() != userId 2172 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2173 checkSystemOrRoot("get application restrictions for other users/apps"); 2174 } 2175 synchronized (mPackagesLock) { 2176 // Read the restrictions from XML 2177 return readApplicationRestrictionsLP(packageName, userId); 2178 } 2179 } 2180 2181 @Override 2182 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2183 int userId) { 2184 checkSystemOrRoot("set application restrictions"); 2185 synchronized (mPackagesLock) { 2186 if (restrictions == null || restrictions.isEmpty()) { 2187 cleanAppRestrictionsForPackage(packageName, userId); 2188 } else { 2189 // Write the restrictions to XML 2190 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2191 } 2192 } 2193 2194 if (isPackageInstalled(packageName, userId)) { 2195 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2196 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2197 changeIntent.setPackage(packageName); 2198 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2199 mContext.sendBroadcastAsUser(changeIntent, new UserHandle(userId)); 2200 } 2201 } 2202 2203 private int getUidForPackage(String packageName) { 2204 long ident = Binder.clearCallingIdentity(); 2205 try { 2206 return mContext.getPackageManager().getApplicationInfo(packageName, 2207 PackageManager.GET_UNINSTALLED_PACKAGES).uid; 2208 } catch (NameNotFoundException nnfe) { 2209 return -1; 2210 } finally { 2211 Binder.restoreCallingIdentity(ident); 2212 } 2213 } 2214 2215 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2216 AtomicFile restrictionsFile = 2217 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2218 packageToRestrictionsFileName(packageName))); 2219 return readApplicationRestrictionsLP(restrictionsFile); 2220 } 2221 2222 @VisibleForTesting 2223 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2224 final Bundle restrictions = new Bundle(); 2225 final ArrayList<String> values = new ArrayList<>(); 2226 if (!restrictionsFile.getBaseFile().exists()) { 2227 return restrictions; 2228 } 2229 2230 FileInputStream fis = null; 2231 try { 2232 fis = restrictionsFile.openRead(); 2233 XmlPullParser parser = Xml.newPullParser(); 2234 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2235 XmlUtils.nextElement(parser); 2236 if (parser.getEventType() != XmlPullParser.START_TAG) { 2237 Slog.e(LOG_TAG, "Unable to read restrictions file " 2238 + restrictionsFile.getBaseFile()); 2239 return restrictions; 2240 } 2241 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2242 readEntry(restrictions, values, parser); 2243 } 2244 } catch (IOException|XmlPullParserException e) { 2245 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2246 } finally { 2247 IoUtils.closeQuietly(fis); 2248 } 2249 return restrictions; 2250 } 2251 2252 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2253 XmlPullParser parser) throws XmlPullParserException, IOException { 2254 int type = parser.getEventType(); 2255 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2256 String key = parser.getAttributeValue(null, ATTR_KEY); 2257 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2258 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2259 if (multiple != null) { 2260 values.clear(); 2261 int count = Integer.parseInt(multiple); 2262 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2263 if (type == XmlPullParser.START_TAG 2264 && parser.getName().equals(TAG_VALUE)) { 2265 values.add(parser.nextText().trim()); 2266 count--; 2267 } 2268 } 2269 String [] valueStrings = new String[values.size()]; 2270 values.toArray(valueStrings); 2271 restrictions.putStringArray(key, valueStrings); 2272 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2273 restrictions.putBundle(key, readBundleEntry(parser, values)); 2274 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2275 final int outerDepth = parser.getDepth(); 2276 ArrayList<Bundle> bundleList = new ArrayList<>(); 2277 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2278 Bundle childBundle = readBundleEntry(parser, values); 2279 bundleList.add(childBundle); 2280 } 2281 restrictions.putParcelableArray(key, 2282 bundleList.toArray(new Bundle[bundleList.size()])); 2283 } else { 2284 String value = parser.nextText().trim(); 2285 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2286 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2287 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2288 restrictions.putInt(key, Integer.parseInt(value)); 2289 } else { 2290 restrictions.putString(key, value); 2291 } 2292 } 2293 } 2294 } 2295 2296 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2297 throws IOException, XmlPullParserException { 2298 Bundle childBundle = new Bundle(); 2299 final int outerDepth = parser.getDepth(); 2300 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2301 readEntry(childBundle, values, parser); 2302 } 2303 return childBundle; 2304 } 2305 2306 private void writeApplicationRestrictionsLP(String packageName, 2307 Bundle restrictions, int userId) { 2308 AtomicFile restrictionsFile = new AtomicFile( 2309 new File(Environment.getUserSystemDirectory(userId), 2310 packageToRestrictionsFileName(packageName))); 2311 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2312 } 2313 2314 @VisibleForTesting 2315 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2316 FileOutputStream fos = null; 2317 try { 2318 fos = restrictionsFile.startWrite(); 2319 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2320 2321 final XmlSerializer serializer = new FastXmlSerializer(); 2322 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2323 serializer.startDocument(null, true); 2324 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2325 2326 serializer.startTag(null, TAG_RESTRICTIONS); 2327 writeBundle(restrictions, serializer); 2328 serializer.endTag(null, TAG_RESTRICTIONS); 2329 2330 serializer.endDocument(); 2331 restrictionsFile.finishWrite(fos); 2332 } catch (Exception e) { 2333 restrictionsFile.failWrite(fos); 2334 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2335 } 2336 } 2337 2338 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2339 throws IOException { 2340 for (String key : restrictions.keySet()) { 2341 Object value = restrictions.get(key); 2342 serializer.startTag(null, TAG_ENTRY); 2343 serializer.attribute(null, ATTR_KEY, key); 2344 2345 if (value instanceof Boolean) { 2346 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2347 serializer.text(value.toString()); 2348 } else if (value instanceof Integer) { 2349 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2350 serializer.text(value.toString()); 2351 } else if (value == null || value instanceof String) { 2352 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2353 serializer.text(value != null ? (String) value : ""); 2354 } else if (value instanceof Bundle) { 2355 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2356 writeBundle((Bundle) value, serializer); 2357 } else if (value instanceof Parcelable[]) { 2358 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2359 Parcelable[] array = (Parcelable[]) value; 2360 for (Parcelable parcelable : array) { 2361 if (!(parcelable instanceof Bundle)) { 2362 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2363 } 2364 serializer.startTag(null, TAG_ENTRY); 2365 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2366 writeBundle((Bundle) parcelable, serializer); 2367 serializer.endTag(null, TAG_ENTRY); 2368 } 2369 } else { 2370 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2371 String[] values = (String[]) value; 2372 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2373 for (String choice : values) { 2374 serializer.startTag(null, TAG_VALUE); 2375 serializer.text(choice != null ? choice : ""); 2376 serializer.endTag(null, TAG_VALUE); 2377 } 2378 } 2379 serializer.endTag(null, TAG_ENTRY); 2380 } 2381 } 2382 2383 @Override 2384 public int getUserSerialNumber(int userHandle) { 2385 synchronized (mUsersLock) { 2386 if (!exists(userHandle)) return -1; 2387 return getUserInfoLU(userHandle).serialNumber; 2388 } 2389 } 2390 2391 @Override 2392 public int getUserHandle(int userSerialNumber) { 2393 synchronized (mUsersLock) { 2394 for (int userId : mUserIds) { 2395 UserInfo info = getUserInfoLU(userId); 2396 if (info != null && info.serialNumber == userSerialNumber) return userId; 2397 } 2398 // Not found 2399 return -1; 2400 } 2401 } 2402 2403 @Override 2404 public long getUserCreationTime(int userHandle) { 2405 int callingUserId = UserHandle.getCallingUserId(); 2406 UserInfo userInfo = null; 2407 synchronized (mUsersLock) { 2408 if (callingUserId == userHandle) { 2409 userInfo = getUserInfoLU(userHandle); 2410 } else { 2411 UserInfo parent = getProfileParentLU(userHandle); 2412 if (parent != null && parent.id == callingUserId) { 2413 userInfo = getUserInfoLU(userHandle); 2414 } 2415 } 2416 } 2417 if (userInfo == null) { 2418 throw new SecurityException("userHandle can only be the calling user or a managed " 2419 + "profile associated with this user"); 2420 } 2421 return userInfo.creationTime; 2422 } 2423 2424 /** 2425 * Caches the list of user ids in an array, adjusting the array size when necessary. 2426 */ 2427 private void updateUserIds() { 2428 int num = 0; 2429 synchronized (mUsersLock) { 2430 final int userSize = mUsers.size(); 2431 for (int i = 0; i < userSize; i++) { 2432 if (!mUsers.valueAt(i).info.partial) { 2433 num++; 2434 } 2435 } 2436 final int[] newUsers = new int[num]; 2437 int n = 0; 2438 for (int i = 0; i < userSize; i++) { 2439 if (!mUsers.valueAt(i).info.partial) { 2440 newUsers[n++] = mUsers.keyAt(i); 2441 } 2442 } 2443 mUserIds = newUsers; 2444 } 2445 } 2446 2447 /** 2448 * Called right before a user is started. This gives us a chance to prepare 2449 * app storage and apply any user restrictions. 2450 */ 2451 public void onBeforeStartUser(int userId) { 2452 mPm.reconcileAppsData(userId, Installer.FLAG_DE_STORAGE); 2453 2454 if (userId != UserHandle.USER_SYSTEM) { 2455 synchronized (mRestrictionsLock) { 2456 applyUserRestrictionsLR(userId); 2457 } 2458 } 2459 } 2460 2461 /** 2462 * Called right before a user is unlocked. This gives us a chance to prepare 2463 * app storage. 2464 */ 2465 public void onBeforeUnlockUser(int userId) { 2466 mPm.reconcileAppsData(userId, Installer.FLAG_CE_STORAGE); 2467 } 2468 2469 /** 2470 * Make a note of the last started time of a user and do some cleanup. 2471 * @param userId the user that was just foregrounded 2472 */ 2473 public void onUserForeground(int userId) { 2474 UserData userData = getUserDataNoChecks(userId); 2475 if (userData == null || userData.info.partial) { 2476 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2477 return; 2478 } 2479 long now = System.currentTimeMillis(); 2480 if (now > EPOCH_PLUS_30_YEARS) { 2481 userData.info.lastLoggedInTime = now; 2482 scheduleWriteUser(userData); 2483 } 2484 } 2485 2486 /** 2487 * Returns the next available user id, filling in any holes in the ids. 2488 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2489 * for data and battery stats collection, or unexpected cross-talk. 2490 */ 2491 private int getNextAvailableId() { 2492 synchronized (mUsersLock) { 2493 int i = MIN_USER_ID; 2494 while (i < MAX_USER_ID) { 2495 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2496 return i; 2497 } 2498 i++; 2499 } 2500 } 2501 throw new IllegalStateException("No user id available!"); 2502 } 2503 2504 private String packageToRestrictionsFileName(String packageName) { 2505 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2506 } 2507 2508 /** 2509 * Enforce that serial number stored in user directory inode matches the 2510 * given expected value. Gracefully sets the serial number if currently 2511 * undefined. 2512 * 2513 * @throws IOException when problem extracting serial number, or serial 2514 * number is mismatched. 2515 */ 2516 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2517 final int foundSerial = getSerialNumber(file); 2518 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 2519 2520 if (foundSerial == -1) { 2521 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 2522 try { 2523 setSerialNumber(file, serialNumber); 2524 } catch (IOException e) { 2525 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 2526 } 2527 2528 } else if (foundSerial != serialNumber) { 2529 throw new IOException("Found serial number " + foundSerial 2530 + " doesn't match expected " + serialNumber); 2531 } 2532 } 2533 2534 /** 2535 * Set serial number stored in user directory inode. 2536 * 2537 * @throws IOException if serial number was already set 2538 */ 2539 private static void setSerialNumber(File file, int serialNumber) 2540 throws IOException { 2541 try { 2542 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 2543 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 2544 } catch (ErrnoException e) { 2545 throw e.rethrowAsIOException(); 2546 } 2547 } 2548 2549 /** 2550 * Return serial number stored in user directory inode. 2551 * 2552 * @return parsed serial number, or -1 if not set 2553 */ 2554 private static int getSerialNumber(File file) throws IOException { 2555 try { 2556 final byte[] buf = new byte[256]; 2557 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 2558 final String serial = new String(buf, 0, len); 2559 try { 2560 return Integer.parseInt(serial); 2561 } catch (NumberFormatException e) { 2562 throw new IOException("Bad serial number: " + serial); 2563 } 2564 } catch (ErrnoException e) { 2565 if (e.errno == OsConstants.ENODATA) { 2566 return -1; 2567 } else { 2568 throw e.rethrowAsIOException(); 2569 } 2570 } 2571 } 2572 2573 @Override 2574 public void setSeedAccountData(int userId, String accountName, String accountType, 2575 PersistableBundle accountOptions, boolean persist) { 2576 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 2577 synchronized (mPackagesLock) { 2578 final UserData userData; 2579 synchronized (mUsersLock) { 2580 userData = getUserDataLU(userId); 2581 if (userData == null) { 2582 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 2583 return; 2584 } 2585 userData.seedAccountName = accountName; 2586 userData.seedAccountType = accountType; 2587 userData.seedAccountOptions = accountOptions; 2588 userData.persistSeedData = persist; 2589 } 2590 if (persist) { 2591 writeUserLP(userData); 2592 } 2593 } 2594 } 2595 2596 @Override 2597 public String getSeedAccountName() throws RemoteException { 2598 checkManageUsersPermission("Cannot get seed account information"); 2599 synchronized (mUsersLock) { 2600 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2601 return userData.seedAccountName; 2602 } 2603 } 2604 2605 @Override 2606 public String getSeedAccountType() throws RemoteException { 2607 checkManageUsersPermission("Cannot get seed account information"); 2608 synchronized (mUsersLock) { 2609 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2610 return userData.seedAccountType; 2611 } 2612 } 2613 2614 @Override 2615 public PersistableBundle getSeedAccountOptions() throws RemoteException { 2616 checkManageUsersPermission("Cannot get seed account information"); 2617 synchronized (mUsersLock) { 2618 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2619 return userData.seedAccountOptions; 2620 } 2621 } 2622 2623 @Override 2624 public void clearSeedAccountData() throws RemoteException { 2625 checkManageUsersPermission("Cannot clear seed account information"); 2626 synchronized (mPackagesLock) { 2627 UserData userData; 2628 synchronized (mUsersLock) { 2629 userData = getUserDataLU(UserHandle.getCallingUserId()); 2630 if (userData == null) return; 2631 userData.clearSeedAccountData(); 2632 } 2633 writeUserLP(userData); 2634 } 2635 } 2636 2637 @Override 2638 public boolean someUserHasSeedAccount(String accountName, String accountType) 2639 throws RemoteException { 2640 checkManageUsersPermission("Cannot check seed account information"); 2641 synchronized (mUsersLock) { 2642 final int userSize = mUsers.size(); 2643 for (int i = 0; i < userSize; i++) { 2644 final UserData data = mUsers.valueAt(i); 2645 if (data.info.isInitialized()) continue; 2646 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 2647 continue; 2648 } 2649 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 2650 continue; 2651 } 2652 return true; 2653 } 2654 } 2655 return false; 2656 } 2657 2658 @Override 2659 public void onShellCommand(FileDescriptor in, FileDescriptor out, 2660 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 2661 (new Shell()).exec(this, in, out, err, args, resultReceiver); 2662 } 2663 2664 int onShellCommand(Shell shell, String cmd) { 2665 if (cmd == null) { 2666 return shell.handleDefaultCommands(cmd); 2667 } 2668 2669 final PrintWriter pw = shell.getOutPrintWriter(); 2670 try { 2671 switch(cmd) { 2672 case "list": 2673 return runList(pw); 2674 } 2675 } catch (RemoteException e) { 2676 pw.println("Remote exception: " + e); 2677 } 2678 return -1; 2679 } 2680 2681 private int runList(PrintWriter pw) throws RemoteException { 2682 final IActivityManager am = ActivityManagerNative.getDefault(); 2683 final List<UserInfo> users = getUsers(false); 2684 if (users == null) { 2685 pw.println("Error: couldn't get users"); 2686 return 1; 2687 } else { 2688 pw.println("Users:"); 2689 for (int i = 0; i < users.size(); i++) { 2690 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 2691 pw.println("\t" + users.get(i).toString() + running); 2692 } 2693 return 0; 2694 } 2695 } 2696 2697 @Override 2698 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2699 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2700 != PackageManager.PERMISSION_GRANTED) { 2701 pw.println("Permission Denial: can't dump UserManager from from pid=" 2702 + Binder.getCallingPid() 2703 + ", uid=" + Binder.getCallingUid() 2704 + " without permission " 2705 + android.Manifest.permission.DUMP); 2706 return; 2707 } 2708 2709 long now = System.currentTimeMillis(); 2710 StringBuilder sb = new StringBuilder(); 2711 synchronized (mPackagesLock) { 2712 synchronized (mUsersLock) { 2713 pw.println("Users:"); 2714 for (int i = 0; i < mUsers.size(); i++) { 2715 UserData userData = mUsers.valueAt(i); 2716 if (userData == null) { 2717 continue; 2718 } 2719 UserInfo userInfo = userData.info; 2720 final int userId = userInfo.id; 2721 pw.print(" "); pw.print(userInfo); 2722 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 2723 if (mRemovingUserIds.get(userId)) { 2724 pw.print(" <removing> "); 2725 } 2726 if (userInfo.partial) { 2727 pw.print(" <partial>"); 2728 } 2729 pw.println(); 2730 pw.print(" Created: "); 2731 if (userInfo.creationTime == 0) { 2732 pw.println("<unknown>"); 2733 } else { 2734 sb.setLength(0); 2735 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 2736 sb.append(" ago"); 2737 pw.println(sb); 2738 } 2739 pw.print(" Last logged in: "); 2740 if (userInfo.lastLoggedInTime == 0) { 2741 pw.println("<unknown>"); 2742 } else { 2743 sb.setLength(0); 2744 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 2745 sb.append(" ago"); 2746 pw.println(sb); 2747 } 2748 pw.print(" Has profile owner: "); 2749 pw.println(mIsUserManaged.get(userId)); 2750 pw.println(" Restrictions:"); 2751 synchronized (mRestrictionsLock) { 2752 UserRestrictionsUtils.dumpRestrictions( 2753 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 2754 pw.println(" Device policy local restrictions:"); 2755 UserRestrictionsUtils.dumpRestrictions( 2756 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 2757 pw.println(" Effective restrictions:"); 2758 UserRestrictionsUtils.dumpRestrictions( 2759 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 2760 } 2761 2762 if (userData.account != null) { 2763 pw.print(" Account name: " + userData.account); 2764 pw.println(); 2765 } 2766 2767 if (userData.seedAccountName != null) { 2768 pw.print(" Seed account name: " + userData.seedAccountName); 2769 pw.println(); 2770 if (userData.seedAccountType != null) { 2771 pw.print(" account type: " + userData.seedAccountType); 2772 pw.println(); 2773 } 2774 if (userData.seedAccountOptions != null) { 2775 pw.print(" account options exist"); 2776 pw.println(); 2777 } 2778 } 2779 } 2780 } 2781 pw.println(); 2782 pw.println(" Device policy global restrictions:"); 2783 synchronized (mRestrictionsLock) { 2784 UserRestrictionsUtils 2785 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 2786 } 2787 pw.println(); 2788 pw.println(" Guest restrictions:"); 2789 synchronized (mGuestRestrictions) { 2790 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 2791 } 2792 synchronized (mUsersLock) { 2793 pw.println(); 2794 pw.println(" Device managed: " + mIsDeviceManaged); 2795 } 2796 // Dump some capabilities 2797 pw.println(); 2798 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 2799 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 2800 pw.println(" All guests ephemeral: " + Resources.getSystem().getBoolean( 2801 com.android.internal.R.bool.config_guestUserEphemeral)); 2802 } 2803 } 2804 2805 final class MainHandler extends Handler { 2806 2807 @Override 2808 public void handleMessage(Message msg) { 2809 switch (msg.what) { 2810 case WRITE_USER_MSG: 2811 removeMessages(WRITE_USER_MSG, msg.obj); 2812 synchronized (mPackagesLock) { 2813 int userId = ((UserData) msg.obj).info.id; 2814 UserData userData = getUserDataNoChecks(userId); 2815 if (userData != null) { 2816 writeUserLP(userData); 2817 } 2818 } 2819 } 2820 } 2821 } 2822 2823 /** 2824 * @param userId 2825 * @return whether the user has been initialized yet 2826 */ 2827 boolean isInitialized(int userId) { 2828 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 2829 } 2830 2831 private class LocalService extends UserManagerInternal { 2832 @Override 2833 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 2834 @Nullable Bundle globalRestrictions) { 2835 UserManagerService.this.setDevicePolicyUserRestrictions(userId, localRestrictions, 2836 globalRestrictions); 2837 } 2838 2839 @Override 2840 public Bundle getBaseUserRestrictions(int userId) { 2841 synchronized (mRestrictionsLock) { 2842 return mBaseUserRestrictions.get(userId); 2843 } 2844 } 2845 2846 @Override 2847 public void setBaseUserRestrictionsByDpmsForMigration( 2848 int userId, Bundle baseRestrictions) { 2849 synchronized (mRestrictionsLock) { 2850 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 2851 invalidateEffectiveUserRestrictionsLR(userId); 2852 } 2853 2854 final UserData userData = getUserDataNoChecks(userId); 2855 synchronized (mPackagesLock) { 2856 if (userData != null) { 2857 writeUserLP(userData); 2858 } else { 2859 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 2860 } 2861 } 2862 } 2863 2864 @Override 2865 public boolean getUserRestriction(int userId, String key) { 2866 return getUserRestrictions(userId).getBoolean(key); 2867 } 2868 2869 @Override 2870 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 2871 synchronized (mUserRestrictionsListeners) { 2872 mUserRestrictionsListeners.add(listener); 2873 } 2874 } 2875 2876 @Override 2877 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 2878 synchronized (mUserRestrictionsListeners) { 2879 mUserRestrictionsListeners.remove(listener); 2880 } 2881 } 2882 2883 @Override 2884 public void setDeviceManaged(boolean isManaged) { 2885 synchronized (mUsersLock) { 2886 mIsDeviceManaged = isManaged; 2887 } 2888 } 2889 2890 @Override 2891 public void setUserManaged(int userId, boolean isManaged) { 2892 synchronized (mUsersLock) { 2893 mIsUserManaged.put(userId, isManaged); 2894 } 2895 } 2896 2897 @Override 2898 public void setUserIcon(int userId, Bitmap bitmap) { 2899 long ident = Binder.clearCallingIdentity(); 2900 try { 2901 synchronized (mPackagesLock) { 2902 UserData userData = getUserDataNoChecks(userId); 2903 if (userData == null || userData.info.partial) { 2904 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 2905 return; 2906 } 2907 writeBitmapLP(userData.info, bitmap); 2908 writeUserLP(userData); 2909 } 2910 sendUserInfoChangedBroadcast(userId); 2911 } finally { 2912 Binder.restoreCallingIdentity(ident); 2913 } 2914 } 2915 } 2916 2917 private class Shell extends ShellCommand { 2918 @Override 2919 public int onCommand(String cmd) { 2920 return onShellCommand(this, cmd); 2921 } 2922 2923 @Override 2924 public void onHelp() { 2925 final PrintWriter pw = getOutPrintWriter(); 2926 pw.println("User manager (user) commands:"); 2927 pw.println(" help"); 2928 pw.println(" Print this help text."); 2929 pw.println(""); 2930 pw.println(" list"); 2931 pw.println(" Prints all users on the system."); 2932 } 2933 } 2934 2935 private static void debug(String message) { 2936 Log.d(LOG_TAG, message + 2937 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 2938 } 2939} 2940