UserManagerService.java revision 12747879b0204b9dfee997eddc981d09289e8b77
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.graphics.Bitmap; 36import android.os.Binder; 37import android.os.Bundle; 38import android.os.Debug; 39import android.os.Environment; 40import android.os.FileUtils; 41import android.os.Handler; 42import android.os.IUserManager; 43import android.os.Message; 44import android.os.ParcelFileDescriptor; 45import android.os.Parcelable; 46import android.os.PersistableBundle; 47import android.os.Process; 48import android.os.RemoteException; 49import android.os.ResultReceiver; 50import android.os.ServiceManager; 51import android.os.ShellCommand; 52import android.os.UserHandle; 53import android.os.UserManager; 54import android.os.UserManagerInternal; 55import android.os.UserManagerInternal.UserRestrictionsListener; 56import android.os.storage.StorageManager; 57import android.os.storage.VolumeInfo; 58import android.system.ErrnoException; 59import android.system.Os; 60import android.system.OsConstants; 61import android.util.AtomicFile; 62import android.util.Log; 63import android.util.Slog; 64import android.util.SparseArray; 65import android.util.SparseBooleanArray; 66import android.util.TimeUtils; 67import android.util.Xml; 68 69import com.android.internal.annotations.GuardedBy; 70import com.android.internal.annotations.VisibleForTesting; 71import com.android.internal.app.IAppOpsService; 72import com.android.internal.logging.MetricsLogger; 73import com.android.internal.util.FastXmlSerializer; 74import com.android.internal.util.Preconditions; 75import com.android.internal.util.XmlUtils; 76import com.android.internal.widget.LockPatternUtils; 77import com.android.server.LocalServices; 78import com.android.server.pm.Installer.StorageFlags; 79 80import org.xmlpull.v1.XmlPullParser; 81import org.xmlpull.v1.XmlPullParserException; 82import org.xmlpull.v1.XmlSerializer; 83 84import java.io.BufferedOutputStream; 85import java.io.File; 86import java.io.FileDescriptor; 87import java.io.FileInputStream; 88import java.io.FileNotFoundException; 89import java.io.FileOutputStream; 90import java.io.IOException; 91import java.io.PrintWriter; 92import java.nio.charset.StandardCharsets; 93import java.util.ArrayList; 94import java.util.List; 95 96import libcore.io.IoUtils; 97import libcore.util.Objects; 98 99/** 100 * Service for {@link UserManager}. 101 * 102 * Method naming convention: 103 * <ul> 104 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 105 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 106 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 107 * </ul> 108 */ 109public class UserManagerService extends IUserManager.Stub { 110 private static final String LOG_TAG = "UserManagerService"; 111 static final boolean DBG = true; // DO NOT SUBMIT WITH TRUE 112 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 113 114 private static final String TAG_NAME = "name"; 115 private static final String TAG_ACCOUNT = "account"; 116 private static final String ATTR_FLAGS = "flags"; 117 private static final String ATTR_ICON_PATH = "icon"; 118 private static final String ATTR_ID = "id"; 119 private static final String ATTR_CREATION_TIME = "created"; 120 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 121 private static final String ATTR_SERIAL_NO = "serialNumber"; 122 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 123 private static final String ATTR_PARTIAL = "partial"; 124 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 125 private static final String ATTR_USER_VERSION = "version"; 126 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 127 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 128 private static final String ATTR_SEED_ACCOUNT_NAME = "seedAccountName"; 129 private static final String ATTR_SEED_ACCOUNT_TYPE = "seedAccountType"; 130 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 131 private static final String TAG_USERS = "users"; 132 private static final String TAG_USER = "user"; 133 private static final String TAG_RESTRICTIONS = "restrictions"; 134 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 135 private static final String TAG_ENTRY = "entry"; 136 private static final String TAG_VALUE = "value"; 137 private static final String TAG_SEED_ACCOUNT_OPTIONS = "seedAccountOptions"; 138 private static final String ATTR_KEY = "key"; 139 private static final String ATTR_VALUE_TYPE = "type"; 140 private static final String ATTR_MULTIPLE = "m"; 141 142 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 143 private static final String ATTR_TYPE_STRING = "s"; 144 private static final String ATTR_TYPE_BOOLEAN = "b"; 145 private static final String ATTR_TYPE_INTEGER = "i"; 146 private static final String ATTR_TYPE_BUNDLE = "B"; 147 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 148 149 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 150 private static final String USER_LIST_FILENAME = "userlist.xml"; 151 private static final String USER_PHOTO_FILENAME = "photo.png"; 152 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 153 154 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 155 private static final String XML_SUFFIX = ".xml"; 156 157 private static final int MIN_USER_ID = 10; 158 // We need to keep process uid within Integer.MAX_VALUE. 159 private static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 160 161 private static final int USER_VERSION = 6; 162 163 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 164 165 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 166 // without first making sure that the rest of the framework is prepared for it. 167 private static final int MAX_MANAGED_PROFILES = 1; 168 169 static final int WRITE_USER_MSG = 1; 170 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 171 172 private static final String XATTR_SERIAL = "user.serial"; 173 174 // Tron counters 175 private static final String TRON_GUEST_CREATED = "users_guest_created"; 176 private static final String TRON_USER_CREATED = "users_user_created"; 177 178 private final Context mContext; 179 private final PackageManagerService mPm; 180 private final Object mPackagesLock; 181 // Short-term lock for internal state, when interaction/sync with PM is not required 182 private final Object mUsersLock = new Object(); 183 private final Object mRestrictionsLock = new Object(); 184 185 private final Handler mHandler; 186 187 private final File mUsersDir; 188 private final File mUserListFile; 189 190 /** 191 * User-related information that is used for persisting to flash. Only UserInfo is 192 * directly exposed to other system apps. 193 */ 194 private static class UserData { 195 // Basic user information and properties 196 UserInfo info; 197 // Account name used when there is a strong association between a user and an account 198 String account; 199 // Account information for seeding into a newly created user. This could also be 200 // used for login validation for an existing user, for updating their credentials. 201 // In the latter case, data may not need to be persisted as it is only valid for the 202 // current login session. 203 String seedAccountName; 204 String seedAccountType; 205 PersistableBundle seedAccountOptions; 206 // Whether to perist the seed account information to be available after a boot 207 boolean persistSeedData; 208 209 void clearSeedAccountData() { 210 seedAccountName = null; 211 seedAccountType = null; 212 seedAccountOptions = null; 213 persistSeedData = false; 214 } 215 } 216 217 @GuardedBy("mUsersLock") 218 private final SparseArray<UserData> mUsers = new SparseArray<>(); 219 220 /** 221 * User restrictions set via UserManager. This doesn't include restrictions set by 222 * device owner / profile owners. 223 * 224 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 225 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 226 * maybe shared between {@link #mBaseUserRestrictions} and 227 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 228 * (Otherwise we won't be able to detect what restrictions have changed in 229 * {@link #updateUserRestrictionsInternalLR}. 230 */ 231 @GuardedBy("mRestrictionsLock") 232 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 233 234 /** 235 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 236 * with device / profile owner restrictions. We'll initialize it lazily; use 237 * {@link #getEffectiveUserRestrictions} to access it. 238 * 239 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 240 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 241 * maybe shared between {@link #mBaseUserRestrictions} and 242 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 243 * (Otherwise we won't be able to detect what restrictions have changed in 244 * {@link #updateUserRestrictionsInternalLR}. 245 */ 246 @GuardedBy("mRestrictionsLock") 247 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 248 249 /** 250 * User restrictions that have already been applied in 251 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 252 * that have changed since the last 253 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 254 */ 255 @GuardedBy("mRestrictionsLock") 256 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 257 258 /** 259 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 260 * that should be applied to all users, including guests. 261 */ 262 @GuardedBy("mRestrictionsLock") 263 private Bundle mDevicePolicyGlobalUserRestrictions; 264 265 /** 266 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 267 * for each user. 268 */ 269 @GuardedBy("mRestrictionsLock") 270 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 271 272 @GuardedBy("mGuestRestrictions") 273 private final Bundle mGuestRestrictions = new Bundle(); 274 275 /** 276 * Set of user IDs being actively removed. Removed IDs linger in this set 277 * for several seconds to work around a VFS caching issue. 278 */ 279 @GuardedBy("mUsersLock") 280 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 281 282 @GuardedBy("mUsersLock") 283 private int[] mUserIds; 284 @GuardedBy("mPackagesLock") 285 private int mNextSerialNumber; 286 private int mUserVersion = 0; 287 288 private IAppOpsService mAppOpsService; 289 290 private final LocalService mLocalService; 291 292 @GuardedBy("mUsersLock") 293 private boolean mIsDeviceManaged; 294 295 @GuardedBy("mUsersLock") 296 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 297 298 @GuardedBy("mUserRestrictionsListeners") 299 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 300 new ArrayList<>(); 301 302 private final LockPatternUtils mLockPatternUtils; 303 304 private static UserManagerService sInstance; 305 306 public static UserManagerService getInstance() { 307 synchronized (UserManagerService.class) { 308 return sInstance; 309 } 310 } 311 312 @VisibleForTesting 313 UserManagerService(File dataDir) { 314 this(null, null, new Object(), dataDir); 315 } 316 317 /** 318 * Called by package manager to create the service. This is closely 319 * associated with the package manager, and the given lock is the 320 * package manager's own lock. 321 */ 322 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 323 this(context, pm, packagesLock, Environment.getDataDirectory()); 324 } 325 326 private UserManagerService(Context context, PackageManagerService pm, 327 Object packagesLock, File dataDir) { 328 mContext = context; 329 mPm = pm; 330 mPackagesLock = packagesLock; 331 mHandler = new MainHandler(); 332 synchronized (mPackagesLock) { 333 mUsersDir = new File(dataDir, USER_INFO_DIR); 334 mUsersDir.mkdirs(); 335 // Make zeroth user directory, for services to migrate their files to that location 336 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 337 userZeroDir.mkdirs(); 338 FileUtils.setPermissions(mUsersDir.toString(), 339 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 340 -1, -1); 341 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 342 initDefaultGuestRestrictions(); 343 readUserListLP(); 344 sInstance = this; 345 } 346 mLocalService = new LocalService(); 347 LocalServices.addService(UserManagerInternal.class, mLocalService); 348 mLockPatternUtils = new LockPatternUtils(mContext); 349 } 350 351 void systemReady() { 352 // Prune out any partially created, partially removed and ephemeral users. 353 ArrayList<UserInfo> partials = new ArrayList<>(); 354 synchronized (mUsersLock) { 355 final int userSize = mUsers.size(); 356 for (int i = 0; i < userSize; i++) { 357 UserInfo ui = mUsers.valueAt(i).info; 358 if ((ui.partial || ui.guestToRemove || ui.isEphemeral()) && i != 0) { 359 partials.add(ui); 360 } 361 } 362 } 363 final int partialsSize = partials.size(); 364 for (int i = 0; i < partialsSize; i++) { 365 UserInfo ui = partials.get(i); 366 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 367 + " (name=" + ui.name + ")"); 368 removeUserState(ui.id); 369 } 370 371 onUserForeground(UserHandle.USER_SYSTEM); 372 373 mAppOpsService = IAppOpsService.Stub.asInterface( 374 ServiceManager.getService(Context.APP_OPS_SERVICE)); 375 376 synchronized (mRestrictionsLock) { 377 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 378 } 379 } 380 381 @Override 382 public String getUserAccount(int userId) { 383 checkManageUserAndAcrossUsersFullPermission("get user account"); 384 synchronized (mUsersLock) { 385 return mUsers.get(userId).account; 386 } 387 } 388 389 @Override 390 public void setUserAccount(int userId, String accountName) { 391 checkManageUserAndAcrossUsersFullPermission("set user account"); 392 UserData userToUpdate = null; 393 synchronized (mPackagesLock) { 394 synchronized (mUsersLock) { 395 final UserData userData = mUsers.get(userId); 396 if (userData == null) { 397 Slog.e(LOG_TAG, "User not found for setting user account: u" + userId); 398 return; 399 } 400 String currentAccount = userData.account; 401 if (!Objects.equal(currentAccount, accountName)) { 402 userData.account = accountName; 403 userToUpdate = userData; 404 } 405 } 406 407 if (userToUpdate != null) { 408 writeUserLP(userToUpdate); 409 } 410 } 411 } 412 413 @Override 414 public UserInfo getPrimaryUser() { 415 checkManageUsersPermission("query users"); 416 synchronized (mUsersLock) { 417 final int userSize = mUsers.size(); 418 for (int i = 0; i < userSize; i++) { 419 UserInfo ui = mUsers.valueAt(i).info; 420 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 421 return ui; 422 } 423 } 424 } 425 return null; 426 } 427 428 @Override 429 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 430 checkManageUsersPermission("query users"); 431 synchronized (mUsersLock) { 432 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 433 final int userSize = mUsers.size(); 434 for (int i = 0; i < userSize; i++) { 435 UserInfo ui = mUsers.valueAt(i).info; 436 if (ui.partial) { 437 continue; 438 } 439 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 440 users.add(ui); 441 } 442 } 443 return users; 444 } 445 } 446 447 @Override 448 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 449 if (userId != UserHandle.getCallingUserId()) { 450 checkManageUsersPermission("getting profiles related to user " + userId); 451 } 452 final long ident = Binder.clearCallingIdentity(); 453 try { 454 synchronized (mUsersLock) { 455 return getProfilesLU(userId, enabledOnly); 456 } 457 } finally { 458 Binder.restoreCallingIdentity(ident); 459 } 460 } 461 462 /** Assume permissions already checked and caller's identity cleared */ 463 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly) { 464 UserInfo user = getUserInfoLU(userId); 465 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 466 if (user == null) { 467 // Probably a dying user 468 return users; 469 } 470 final int userSize = mUsers.size(); 471 for (int i = 0; i < userSize; i++) { 472 UserInfo profile = mUsers.valueAt(i).info; 473 if (!isProfileOf(user, profile)) { 474 continue; 475 } 476 if (enabledOnly && !profile.isEnabled()) { 477 continue; 478 } 479 if (mRemovingUserIds.get(profile.id)) { 480 continue; 481 } 482 users.add(profile); 483 } 484 return users; 485 } 486 487 @Override 488 public int getCredentialOwnerProfile(int userHandle) { 489 checkManageUsersPermission("get the credential owner"); 490 if (!mLockPatternUtils.isSeparateProfileChallengeEnabled(userHandle)) { 491 synchronized (mUsersLock) { 492 UserInfo profileParent = getProfileParentLU(userHandle); 493 if (profileParent != null) { 494 return profileParent.id; 495 } 496 } 497 } 498 499 return userHandle; 500 } 501 502 @Override 503 public boolean isSameProfileGroup(int userId, int otherUserId) { 504 if (userId == otherUserId) return true; 505 checkManageUsersPermission("check if in the same profile group"); 506 synchronized (mPackagesLock) { 507 return isSameProfileGroupLP(userId, otherUserId); 508 } 509 } 510 511 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 512 synchronized (mUsersLock) { 513 UserInfo userInfo = getUserInfoLU(userId); 514 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 515 return false; 516 } 517 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 518 if (otherUserInfo == null 519 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 520 return false; 521 } 522 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 523 } 524 } 525 526 @Override 527 public UserInfo getProfileParent(int userHandle) { 528 checkManageUsersPermission("get the profile parent"); 529 synchronized (mUsersLock) { 530 return getProfileParentLU(userHandle); 531 } 532 } 533 534 private UserInfo getProfileParentLU(int userHandle) { 535 UserInfo profile = getUserInfoLU(userHandle); 536 if (profile == null) { 537 return null; 538 } 539 int parentUserId = profile.profileGroupId; 540 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 541 return null; 542 } else { 543 return getUserInfoLU(parentUserId); 544 } 545 } 546 547 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 548 return user.id == profile.id || 549 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 550 && user.profileGroupId == profile.profileGroupId); 551 } 552 553 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 554 UserHandle parentHandle, Bundle extras) { 555 // Send intent to profile 556 Intent intent = new Intent(Intent.ACTION_AVAILABILITY_CHANGED); 557 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 558 intent.putExtras(extras); 559 mContext.sendBroadcastAsUser(intent, profileHandle); 560 561 // Send intent to parent 562 if (parentHandle != null) { 563 intent = new Intent(Intent.ACTION_MANAGED_PROFILE_AVAILABILITY_CHANGED); 564 intent.putExtra(Intent.EXTRA_USER, profileHandle); 565 intent.putExtra(Intent.EXTRA_USER_HANDLE, profileHandle.getIdentifier()); 566 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 567 intent.putExtras(extras); 568 mContext.sendBroadcastAsUser(intent, parentHandle); 569 } 570 } 571 572 @Override 573 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 574 checkManageUsersPermission("silence profile"); 575 boolean changed = false; 576 UserInfo profile, parent; 577 synchronized (mPackagesLock) { 578 synchronized (mUsersLock) { 579 profile = getUserInfoLU(userHandle); 580 parent = getProfileParentLU(userHandle); 581 582 } 583 if (profile == null || !profile.isManagedProfile()) { 584 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 585 } 586 if (profile.isQuietModeEnabled() != enableQuietMode) { 587 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 588 writeUserLP(getUserDataLU(profile.id)); 589 changed = true; 590 } 591 } 592 if (changed) { 593 Bundle extras = new Bundle(); 594 extras.putBoolean(Intent.EXTRA_QUIET_MODE, enableQuietMode); 595 broadcastProfileAvailabilityChanges(profile.getUserHandle(), 596 parent != null ? parent.getUserHandle() : null, extras); 597 } 598 } 599 600 @Override 601 public boolean isQuietModeEnabled(int userHandle) { 602 synchronized (mPackagesLock) { 603 UserInfo info; 604 synchronized (mUsersLock) { 605 info = getUserInfoLU(userHandle); 606 } 607 if (info == null || !info.isManagedProfile()) { 608 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 609 } 610 return info.isQuietModeEnabled(); 611 } 612 } 613 614 @Override 615 public void setUserEnabled(int userId) { 616 checkManageUsersPermission("enable user"); 617 synchronized (mPackagesLock) { 618 UserInfo info; 619 synchronized (mUsersLock) { 620 info = getUserInfoLU(userId); 621 } 622 if (info != null && !info.isEnabled()) { 623 info.flags ^= UserInfo.FLAG_DISABLED; 624 writeUserLP(getUserDataLU(info.id)); 625 } 626 } 627 } 628 629 @Override 630 public UserInfo getUserInfo(int userId) { 631 checkManageUsersPermission("query user"); 632 synchronized (mUsersLock) { 633 return getUserInfoLU(userId); 634 } 635 } 636 637 @Override 638 public boolean isRestricted() { 639 synchronized (mUsersLock) { 640 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 641 } 642 } 643 644 @Override 645 public boolean canHaveRestrictedProfile(int userId) { 646 checkManageUsersPermission("canHaveRestrictedProfile"); 647 synchronized (mUsersLock) { 648 final UserInfo userInfo = getUserInfoLU(userId); 649 if (userInfo == null || !userInfo.canHaveProfile()) { 650 return false; 651 } 652 if (!userInfo.isAdmin()) { 653 return false; 654 } 655 // restricted profile can be created if there is no DO set and the admin user has no PO; 656 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 657 } 658 } 659 660 /* 661 * Should be locked on mUsers before calling this. 662 */ 663 private UserInfo getUserInfoLU(int userId) { 664 final UserData userData = mUsers.get(userId); 665 // If it is partial and not in the process of being removed, return as unknown user. 666 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 667 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 668 return null; 669 } 670 return userData != null ? userData.info : null; 671 } 672 673 private UserData getUserDataLU(int userId) { 674 final UserData userData = mUsers.get(userId); 675 // If it is partial and not in the process of being removed, return as unknown user. 676 if (userData != null && userData.info.partial && !mRemovingUserIds.get(userId)) { 677 return null; 678 } 679 return userData; 680 } 681 682 /** 683 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 684 * <p>No permissions checking or any addition checks are made</p> 685 */ 686 private UserInfo getUserInfoNoChecks(int userId) { 687 synchronized (mUsersLock) { 688 final UserData userData = mUsers.get(userId); 689 return userData != null ? userData.info : null; 690 } 691 } 692 693 /** 694 * Obtains {@link #mUsersLock} and return UserData from mUsers. 695 * <p>No permissions checking or any addition checks are made</p> 696 */ 697 private UserData getUserDataNoChecks(int userId) { 698 synchronized (mUsersLock) { 699 return mUsers.get(userId); 700 } 701 } 702 703 /** Called by PackageManagerService */ 704 public boolean exists(int userId) { 705 return getUserInfoNoChecks(userId) != null; 706 } 707 708 @Override 709 public void setUserName(int userId, String name) { 710 checkManageUsersPermission("rename users"); 711 boolean changed = false; 712 synchronized (mPackagesLock) { 713 UserData userData = getUserDataNoChecks(userId); 714 if (userData == null || userData.info.partial) { 715 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 716 return; 717 } 718 if (name != null && !name.equals(userData.info.name)) { 719 userData.info.name = name; 720 writeUserLP(userData); 721 changed = true; 722 } 723 } 724 if (changed) { 725 sendUserInfoChangedBroadcast(userId); 726 } 727 } 728 729 @Override 730 public void setUserIcon(int userId, Bitmap bitmap) { 731 checkManageUsersPermission("update users"); 732 long ident = Binder.clearCallingIdentity(); 733 try { 734 synchronized (mPackagesLock) { 735 UserData userData = getUserDataNoChecks(userId); 736 if (userData == null || userData.info.partial) { 737 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 738 return; 739 } 740 writeBitmapLP(userData.info, bitmap); 741 writeUserLP(userData); 742 } 743 sendUserInfoChangedBroadcast(userId); 744 } finally { 745 Binder.restoreCallingIdentity(ident); 746 } 747 } 748 749 private void sendUserInfoChangedBroadcast(int userId) { 750 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 751 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 752 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 753 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 754 } 755 756 @Override 757 public ParcelFileDescriptor getUserIcon(int userId) { 758 String iconPath; 759 synchronized (mPackagesLock) { 760 UserInfo info = getUserInfoNoChecks(userId); 761 if (info == null || info.partial) { 762 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + userId); 763 return null; 764 } 765 int callingGroupId = getUserInfoNoChecks(UserHandle.getCallingUserId()).profileGroupId; 766 if (callingGroupId == UserInfo.NO_PROFILE_GROUP_ID 767 || callingGroupId != info.profileGroupId) { 768 checkManageUsersPermission("get the icon of a user who is not related"); 769 } 770 if (info.iconPath == null) { 771 return null; 772 } 773 iconPath = info.iconPath; 774 } 775 776 try { 777 return ParcelFileDescriptor.open( 778 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 779 } catch (FileNotFoundException e) { 780 Log.e(LOG_TAG, "Couldn't find icon file", e); 781 } 782 return null; 783 } 784 785 public void makeInitialized(int userId) { 786 checkManageUsersPermission("makeInitialized"); 787 boolean scheduleWriteUser = false; 788 UserData userData; 789 synchronized (mUsersLock) { 790 userData = mUsers.get(userId); 791 if (userData == null || userData.info.partial) { 792 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 793 return; 794 } 795 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 796 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 797 scheduleWriteUser = true; 798 } 799 } 800 if (scheduleWriteUser) { 801 scheduleWriteUser(userData); 802 } 803 } 804 805 /** 806 * If default guest restrictions haven't been initialized yet, add the basic 807 * restrictions. 808 */ 809 private void initDefaultGuestRestrictions() { 810 synchronized (mGuestRestrictions) { 811 if (mGuestRestrictions.isEmpty()) { 812 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 813 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 814 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 815 } 816 } 817 } 818 819 @Override 820 public Bundle getDefaultGuestRestrictions() { 821 checkManageUsersPermission("getDefaultGuestRestrictions"); 822 synchronized (mGuestRestrictions) { 823 return new Bundle(mGuestRestrictions); 824 } 825 } 826 827 @Override 828 public void setDefaultGuestRestrictions(Bundle restrictions) { 829 checkManageUsersPermission("setDefaultGuestRestrictions"); 830 synchronized (mGuestRestrictions) { 831 mGuestRestrictions.clear(); 832 mGuestRestrictions.putAll(restrictions); 833 } 834 synchronized (mPackagesLock) { 835 writeUserListLP(); 836 } 837 } 838 839 /** 840 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 841 */ 842 void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle local, 843 @Nullable Bundle global) { 844 Preconditions.checkNotNull(local); 845 boolean globalChanged = false; 846 boolean localChanged; 847 synchronized (mRestrictionsLock) { 848 if (global != null) { 849 // Update global. 850 globalChanged = !UserRestrictionsUtils.areEqual( 851 mDevicePolicyGlobalUserRestrictions, global); 852 if (globalChanged) { 853 mDevicePolicyGlobalUserRestrictions = global; 854 } 855 } 856 { 857 // Update local. 858 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 859 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 860 if (localChanged) { 861 mDevicePolicyLocalUserRestrictions.put(userId, local); 862 } 863 } 864 } 865 if (DBG) { 866 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 867 + " global=" + global + (globalChanged ? " (changed)" : "") 868 + " local=" + local + (localChanged ? " (changed)" : "") 869 ); 870 } 871 // Don't call them within the mRestrictionsLock. 872 synchronized (mPackagesLock) { 873 if (globalChanged) { 874 writeUserListLP(); 875 } 876 if (localChanged) { 877 writeUserLP(getUserDataNoChecks(userId)); 878 } 879 } 880 881 synchronized (mRestrictionsLock) { 882 if (globalChanged) { 883 applyUserRestrictionsForAllUsersLR(); 884 } else if (localChanged) { 885 applyUserRestrictionsLR(userId); 886 } 887 } 888 } 889 890 @GuardedBy("mRestrictionsLock") 891 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 892 final Bundle baseRestrictions = 893 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 894 final Bundle global = mDevicePolicyGlobalUserRestrictions; 895 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 896 897 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 898 // Common case first. 899 return baseRestrictions; 900 } 901 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 902 UserRestrictionsUtils.merge(effective, global); 903 UserRestrictionsUtils.merge(effective, local); 904 905 return effective; 906 } 907 908 @GuardedBy("mRestrictionsLock") 909 private void invalidateEffectiveUserRestrictionsLR(int userId) { 910 if (DBG) { 911 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 912 } 913 mCachedEffectiveUserRestrictions.remove(userId); 914 } 915 916 private Bundle getEffectiveUserRestrictions(int userId) { 917 synchronized (mRestrictionsLock) { 918 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 919 if (restrictions == null) { 920 restrictions = computeEffectiveUserRestrictionsLR(userId); 921 mCachedEffectiveUserRestrictions.put(userId, restrictions); 922 } 923 return restrictions; 924 } 925 } 926 927 /** @return a specific user restriction that's in effect currently. */ 928 @Override 929 public boolean hasUserRestriction(String restrictionKey, int userId) { 930 Bundle restrictions = getEffectiveUserRestrictions(userId); 931 return restrictions != null && restrictions.getBoolean(restrictionKey); 932 } 933 934 /** 935 * @return UserRestrictions that are in effect currently. This always returns a new 936 * {@link Bundle}. 937 */ 938 @Override 939 public Bundle getUserRestrictions(int userId) { 940 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 941 } 942 943 @Override 944 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 945 checkManageUsersPermission("hasBaseUserRestriction"); 946 synchronized (mRestrictionsLock) { 947 Bundle bundle = mBaseUserRestrictions.get(userId); 948 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 949 } 950 } 951 952 @Override 953 public void setUserRestriction(String key, boolean value, int userId) { 954 checkManageUsersPermission("setUserRestriction"); 955 synchronized (mRestrictionsLock) { 956 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 957 // a copy. 958 final Bundle newRestrictions = UserRestrictionsUtils.clone( 959 mBaseUserRestrictions.get(userId)); 960 newRestrictions.putBoolean(key, value); 961 962 updateUserRestrictionsInternalLR(newRestrictions, userId); 963 } 964 } 965 966 /** 967 * Optionally updating user restrictions, calculate the effective user restrictions and also 968 * propagate to other services and system settings. 969 * 970 * @param newRestrictions User restrictions to set. 971 * If null, will not update user restrictions and only does the propagation. 972 * @param userId target user ID. 973 */ 974 @GuardedBy("mRestrictionsLock") 975 private void updateUserRestrictionsInternalLR( 976 @Nullable Bundle newRestrictions, int userId) { 977 978 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 979 mAppliedUserRestrictions.get(userId)); 980 981 // Update base restrictions. 982 if (newRestrictions != null) { 983 // If newRestrictions == the current one, it's probably a bug. 984 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 985 986 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 987 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 988 != newRestrictions); 989 990 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 991 mBaseUserRestrictions.put(userId, newRestrictions); 992 scheduleWriteUser(getUserDataNoChecks(userId)); 993 } 994 } 995 996 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 997 998 mCachedEffectiveUserRestrictions.put(userId, effective); 999 1000 // Apply the new restrictions. 1001 if (DBG) { 1002 debug("Applying user restrictions: userId=" + userId 1003 + " new=" + effective + " prev=" + prevAppliedRestrictions); 1004 } 1005 1006 if (mAppOpsService != null) { // We skip it until system-ready. 1007 final long token = Binder.clearCallingIdentity(); 1008 try { 1009 mAppOpsService.setUserRestrictions(effective, userId); 1010 } catch (RemoteException e) { 1011 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 1012 } finally { 1013 Binder.restoreCallingIdentity(token); 1014 } 1015 } 1016 1017 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 1018 1019 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 1020 } 1021 1022 private void propagateUserRestrictionsLR(final int userId, 1023 Bundle newRestrictions, Bundle prevRestrictions) { 1024 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 1025 // actually, but we still need some kind of synchronization otherwise we might end up 1026 // calling listeners out-of-order, thus "LR". 1027 1028 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 1029 return; 1030 } 1031 1032 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 1033 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 1034 1035 mHandler.post(new Runnable() { 1036 @Override 1037 public void run() { 1038 UserRestrictionsUtils.applyUserRestrictions( 1039 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 1040 1041 final UserRestrictionsListener[] listeners; 1042 synchronized (mUserRestrictionsListeners) { 1043 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 1044 mUserRestrictionsListeners.toArray(listeners); 1045 } 1046 for (int i = 0; i < listeners.length; i++) { 1047 listeners[i].onUserRestrictionsChanged(userId, 1048 newRestrictionsFinal, prevRestrictionsFinal); 1049 } 1050 } 1051 }); 1052 } 1053 1054 // Package private for the inner class. 1055 void applyUserRestrictionsLR(int userId) { 1056 updateUserRestrictionsInternalLR(null, userId); 1057 } 1058 1059 @GuardedBy("mRestrictionsLock") 1060 // Package private for the inner class. 1061 void applyUserRestrictionsForAllUsersLR() { 1062 if (DBG) { 1063 debug("applyUserRestrictionsForAllUsersLR"); 1064 } 1065 // First, invalidate all cached values. 1066 mCachedEffectiveUserRestrictions.clear(); 1067 1068 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 1069 // it on a handler. 1070 final Runnable r = new Runnable() { 1071 @Override 1072 public void run() { 1073 // Then get the list of running users. 1074 final int[] runningUsers; 1075 try { 1076 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 1077 } catch (RemoteException e) { 1078 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 1079 return; 1080 } 1081 // Then re-calculate the effective restrictions and apply, only for running users. 1082 // It's okay if a new user has started after the getRunningUserIds() call, 1083 // because we'll do the same thing (re-calculate the restrictions and apply) 1084 // when we start a user. 1085 synchronized (mRestrictionsLock) { 1086 for (int i = 0; i < runningUsers.length; i++) { 1087 applyUserRestrictionsLR(runningUsers[i]); 1088 } 1089 } 1090 } 1091 }; 1092 mHandler.post(r); 1093 } 1094 1095 /** 1096 * Check if we've hit the limit of how many users can be created. 1097 */ 1098 private boolean isUserLimitReached() { 1099 int count; 1100 synchronized (mUsersLock) { 1101 count = getAliveUsersExcludingGuestsCountLU(); 1102 } 1103 return count >= UserManager.getMaxSupportedUsers(); 1104 } 1105 1106 @Override 1107 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1108 checkManageUsersPermission("check if more managed profiles can be added."); 1109 if (ActivityManager.isLowRamDeviceStatic()) { 1110 return false; 1111 } 1112 if (!mContext.getPackageManager().hasSystemFeature( 1113 PackageManager.FEATURE_MANAGED_USERS)) { 1114 return false; 1115 } 1116 // Limit number of managed profiles that can be created 1117 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1118 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1119 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1120 return false; 1121 } 1122 synchronized(mUsersLock) { 1123 UserInfo userInfo = getUserInfoLU(userId); 1124 if (!userInfo.canHaveProfile()) { 1125 return false; 1126 } 1127 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1128 - profilesRemovedCount; 1129 // We allow creating a managed profile in the special case where there is only one user. 1130 return usersCountAfterRemoving == 1 1131 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1132 } 1133 } 1134 1135 private int getAliveUsersExcludingGuestsCountLU() { 1136 int aliveUserCount = 0; 1137 final int totalUserCount = mUsers.size(); 1138 // Skip over users being removed 1139 for (int i = 0; i < totalUserCount; i++) { 1140 UserInfo user = mUsers.valueAt(i).info; 1141 if (!mRemovingUserIds.get(user.id) 1142 && !user.isGuest() && !user.partial) { 1143 aliveUserCount++; 1144 } 1145 } 1146 return aliveUserCount; 1147 } 1148 1149 /** 1150 * Enforces that only the system UID or root's UID or apps that have the 1151 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} and 1152 * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL INTERACT_ACROSS_USERS_FULL} 1153 * permissions can make certain calls to the UserManager. 1154 * 1155 * @param message used as message if SecurityException is thrown 1156 * @throws SecurityException if the caller does not have enough privilege. 1157 */ 1158 private static final void checkManageUserAndAcrossUsersFullPermission(String message) { 1159 final int uid = Binder.getCallingUid(); 1160 if (uid != Process.SYSTEM_UID && uid != 0 1161 && ActivityManager.checkComponentPermission( 1162 Manifest.permission.MANAGE_USERS, 1163 uid, -1, true) != PackageManager.PERMISSION_GRANTED 1164 && ActivityManager.checkComponentPermission( 1165 Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1166 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1167 throw new SecurityException( 1168 "You need MANAGE_USERS and INTERACT_ACROSS_USERS_FULL permission to: " 1169 + message); 1170 } 1171 } 1172 1173 /** 1174 * Enforces that only the system UID or root's UID or apps that have the 1175 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1176 * permission can make certain calls to the UserManager. 1177 * 1178 * @param message used as message if SecurityException is thrown 1179 * @throws SecurityException if the caller is not system or root 1180 */ 1181 private static final void checkManageUsersPermission(String message) { 1182 final int uid = Binder.getCallingUid(); 1183 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID 1184 && ActivityManager.checkComponentPermission( 1185 android.Manifest.permission.MANAGE_USERS, 1186 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1187 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1188 } 1189 } 1190 1191 /** 1192 * Enforces that only the system UID or root's UID (on any user) can make certain calls to the 1193 * UserManager. 1194 * 1195 * @param message used as message if SecurityException is thrown 1196 * @throws SecurityException if the caller is not system or root 1197 */ 1198 private static void checkSystemOrRoot(String message) { 1199 final int uid = Binder.getCallingUid(); 1200 if (!UserHandle.isSameApp(uid, Process.SYSTEM_UID) && uid != Process.ROOT_UID) { 1201 throw new SecurityException("Only system may: " + message); 1202 } 1203 } 1204 1205 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1206 try { 1207 File dir = new File(mUsersDir, Integer.toString(info.id)); 1208 File file = new File(dir, USER_PHOTO_FILENAME); 1209 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1210 if (!dir.exists()) { 1211 dir.mkdir(); 1212 FileUtils.setPermissions( 1213 dir.getPath(), 1214 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1215 -1, -1); 1216 } 1217 FileOutputStream os; 1218 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1219 && tmp.renameTo(file)) { 1220 info.iconPath = file.getAbsolutePath(); 1221 } 1222 try { 1223 os.close(); 1224 } catch (IOException ioe) { 1225 // What the ... ! 1226 } 1227 tmp.delete(); 1228 } catch (FileNotFoundException e) { 1229 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1230 } 1231 } 1232 1233 /** 1234 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1235 * cache it elsewhere. 1236 * @return the array of user ids. 1237 */ 1238 public int[] getUserIds() { 1239 synchronized (mUsersLock) { 1240 return mUserIds; 1241 } 1242 } 1243 1244 private void readUserListLP() { 1245 if (!mUserListFile.exists()) { 1246 fallbackToSingleUserLP(); 1247 return; 1248 } 1249 FileInputStream fis = null; 1250 AtomicFile userListFile = new AtomicFile(mUserListFile); 1251 try { 1252 fis = userListFile.openRead(); 1253 XmlPullParser parser = Xml.newPullParser(); 1254 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1255 int type; 1256 while ((type = parser.next()) != XmlPullParser.START_TAG 1257 && type != XmlPullParser.END_DOCUMENT) { 1258 // Skip 1259 } 1260 1261 if (type != XmlPullParser.START_TAG) { 1262 Slog.e(LOG_TAG, "Unable to read user list"); 1263 fallbackToSingleUserLP(); 1264 return; 1265 } 1266 1267 mNextSerialNumber = -1; 1268 if (parser.getName().equals(TAG_USERS)) { 1269 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1270 if (lastSerialNumber != null) { 1271 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1272 } 1273 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1274 if (versionNumber != null) { 1275 mUserVersion = Integer.parseInt(versionNumber); 1276 } 1277 } 1278 1279 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1280 1281 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1282 if (type == XmlPullParser.START_TAG) { 1283 final String name = parser.getName(); 1284 if (name.equals(TAG_USER)) { 1285 String id = parser.getAttributeValue(null, ATTR_ID); 1286 1287 UserData userData = readUserLP(Integer.parseInt(id)); 1288 1289 if (userData != null) { 1290 synchronized (mUsersLock) { 1291 mUsers.put(userData.info.id, userData); 1292 if (mNextSerialNumber < 0 1293 || mNextSerialNumber <= userData.info.id) { 1294 mNextSerialNumber = userData.info.id + 1; 1295 } 1296 } 1297 } 1298 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1299 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1300 && type != XmlPullParser.END_TAG) { 1301 if (type == XmlPullParser.START_TAG) { 1302 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1303 synchronized (mGuestRestrictions) { 1304 UserRestrictionsUtils 1305 .readRestrictions(parser, mGuestRestrictions); 1306 } 1307 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1308 ) { 1309 UserRestrictionsUtils.readRestrictions(parser, 1310 newDevicePolicyGlobalUserRestrictions); 1311 } 1312 break; 1313 } 1314 } 1315 } 1316 } 1317 } 1318 synchronized (mRestrictionsLock) { 1319 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1320 } 1321 updateUserIds(); 1322 upgradeIfNecessaryLP(); 1323 } catch (IOException | XmlPullParserException e) { 1324 fallbackToSingleUserLP(); 1325 } finally { 1326 IoUtils.closeQuietly(fis); 1327 } 1328 } 1329 1330 /** 1331 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1332 */ 1333 private void upgradeIfNecessaryLP() { 1334 final int originalVersion = mUserVersion; 1335 int userVersion = mUserVersion; 1336 if (userVersion < 1) { 1337 // Assign a proper name for the owner, if not initialized correctly before 1338 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1339 if ("Primary".equals(userData.info.name)) { 1340 userData.info.name = 1341 mContext.getResources().getString(com.android.internal.R.string.owner_name); 1342 scheduleWriteUser(userData); 1343 } 1344 userVersion = 1; 1345 } 1346 1347 if (userVersion < 2) { 1348 // Owner should be marked as initialized 1349 UserData userData = getUserDataNoChecks(UserHandle.USER_SYSTEM); 1350 if ((userData.info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1351 userData.info.flags |= UserInfo.FLAG_INITIALIZED; 1352 scheduleWriteUser(userData); 1353 } 1354 userVersion = 2; 1355 } 1356 1357 1358 if (userVersion < 4) { 1359 userVersion = 4; 1360 } 1361 1362 if (userVersion < 5) { 1363 initDefaultGuestRestrictions(); 1364 userVersion = 5; 1365 } 1366 1367 if (userVersion < 6) { 1368 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1369 synchronized (mUsersLock) { 1370 for (int i = 0; i < mUsers.size(); i++) { 1371 UserData userData = mUsers.valueAt(i); 1372 // In non-split mode, only user 0 can have restricted profiles 1373 if (!splitSystemUser && userData.info.isRestricted() 1374 && (userData.info.restrictedProfileParentId 1375 == UserInfo.NO_PROFILE_GROUP_ID)) { 1376 userData.info.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1377 scheduleWriteUser(userData); 1378 } 1379 } 1380 } 1381 userVersion = 6; 1382 } 1383 1384 if (userVersion < USER_VERSION) { 1385 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1386 + USER_VERSION); 1387 } else { 1388 mUserVersion = userVersion; 1389 1390 if (originalVersion < mUserVersion) { 1391 writeUserListLP(); 1392 } 1393 } 1394 } 1395 1396 private void fallbackToSingleUserLP() { 1397 int flags = UserInfo.FLAG_INITIALIZED; 1398 // In split system user mode, the admin and primary flags are assigned to the first human 1399 // user. 1400 if (!UserManager.isSplitSystemUser()) { 1401 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1402 } 1403 // Create the system user 1404 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, 1405 mContext.getResources().getString(com.android.internal.R.string.owner_name), null, 1406 flags); 1407 UserData userData = new UserData(); 1408 userData.info = system; 1409 synchronized (mUsersLock) { 1410 mUsers.put(system.id, userData); 1411 } 1412 mNextSerialNumber = MIN_USER_ID; 1413 mUserVersion = USER_VERSION; 1414 1415 Bundle restrictions = new Bundle(); 1416 synchronized (mRestrictionsLock) { 1417 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1418 } 1419 1420 updateUserIds(); 1421 initDefaultGuestRestrictions(); 1422 1423 writeUserListLP(); 1424 writeUserLP(userData); 1425 } 1426 1427 private void scheduleWriteUser(UserData UserData) { 1428 if (DBG) { 1429 debug("scheduleWriteUser"); 1430 } 1431 // No need to wrap it within a lock -- worst case, we'll just post the same message 1432 // twice. 1433 if (!mHandler.hasMessages(WRITE_USER_MSG, UserData)) { 1434 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, UserData); 1435 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1436 } 1437 } 1438 1439 /* 1440 * Writes the user file in this format: 1441 * 1442 * <user flags="20039023" id="0"> 1443 * <name>Primary</name> 1444 * </user> 1445 */ 1446 private void writeUserLP(UserData userData) { 1447 if (DBG) { 1448 debug("writeUserLP " + userData); 1449 } 1450 FileOutputStream fos = null; 1451 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userData.info.id + XML_SUFFIX)); 1452 try { 1453 fos = userFile.startWrite(); 1454 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1455 1456 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1457 final XmlSerializer serializer = new FastXmlSerializer(); 1458 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1459 serializer.startDocument(null, true); 1460 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1461 1462 final UserInfo userInfo = userData.info; 1463 serializer.startTag(null, TAG_USER); 1464 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1465 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1466 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1467 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1468 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1469 Long.toString(userInfo.lastLoggedInTime)); 1470 if (userInfo.iconPath != null) { 1471 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1472 } 1473 if (userInfo.partial) { 1474 serializer.attribute(null, ATTR_PARTIAL, "true"); 1475 } 1476 if (userInfo.guestToRemove) { 1477 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1478 } 1479 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1480 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1481 Integer.toString(userInfo.profileGroupId)); 1482 } 1483 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1484 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1485 Integer.toString(userInfo.restrictedProfileParentId)); 1486 } 1487 // Write seed data 1488 if (userData.persistSeedData) { 1489 if (userData.seedAccountName != null) { 1490 serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME, userData.seedAccountName); 1491 } 1492 if (userData.seedAccountType != null) { 1493 serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE, userData.seedAccountType); 1494 } 1495 } 1496 serializer.startTag(null, TAG_NAME); 1497 serializer.text(userInfo.name); 1498 serializer.endTag(null, TAG_NAME); 1499 synchronized (mRestrictionsLock) { 1500 UserRestrictionsUtils.writeRestrictions(serializer, 1501 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1502 UserRestrictionsUtils.writeRestrictions(serializer, 1503 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1504 TAG_DEVICE_POLICY_RESTRICTIONS); 1505 } 1506 1507 if (userData.account != null) { 1508 serializer.startTag(null, TAG_ACCOUNT); 1509 serializer.text(userData.account); 1510 serializer.endTag(null, TAG_ACCOUNT); 1511 } 1512 1513 if (userData.persistSeedData && userData.seedAccountOptions != null) { 1514 serializer.startTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1515 userData.seedAccountOptions.saveToXml(serializer); 1516 serializer.endTag(null, TAG_SEED_ACCOUNT_OPTIONS); 1517 } 1518 serializer.endTag(null, TAG_USER); 1519 1520 serializer.endDocument(); 1521 userFile.finishWrite(fos); 1522 } catch (Exception ioe) { 1523 Slog.e(LOG_TAG, "Error writing user info " + userData.info.id + "\n" + ioe); 1524 userFile.failWrite(fos); 1525 } 1526 } 1527 1528 /* 1529 * Writes the user list file in this format: 1530 * 1531 * <users nextSerialNumber="3"> 1532 * <user id="0"></user> 1533 * <user id="2"></user> 1534 * </users> 1535 */ 1536 private void writeUserListLP() { 1537 if (DBG) { 1538 debug("writeUserList"); 1539 } 1540 FileOutputStream fos = null; 1541 AtomicFile userListFile = new AtomicFile(mUserListFile); 1542 try { 1543 fos = userListFile.startWrite(); 1544 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1545 1546 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1547 final XmlSerializer serializer = new FastXmlSerializer(); 1548 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1549 serializer.startDocument(null, true); 1550 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1551 1552 serializer.startTag(null, TAG_USERS); 1553 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1554 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1555 1556 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1557 synchronized (mGuestRestrictions) { 1558 UserRestrictionsUtils 1559 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1560 } 1561 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1562 synchronized (mRestrictionsLock) { 1563 UserRestrictionsUtils.writeRestrictions(serializer, 1564 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1565 } 1566 int[] userIdsToWrite; 1567 synchronized (mUsersLock) { 1568 userIdsToWrite = new int[mUsers.size()]; 1569 for (int i = 0; i < userIdsToWrite.length; i++) { 1570 UserInfo user = mUsers.valueAt(i).info; 1571 userIdsToWrite[i] = user.id; 1572 } 1573 } 1574 for (int id : userIdsToWrite) { 1575 serializer.startTag(null, TAG_USER); 1576 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1577 serializer.endTag(null, TAG_USER); 1578 } 1579 1580 serializer.endTag(null, TAG_USERS); 1581 1582 serializer.endDocument(); 1583 userListFile.finishWrite(fos); 1584 } catch (Exception e) { 1585 userListFile.failWrite(fos); 1586 Slog.e(LOG_TAG, "Error writing user list"); 1587 } 1588 } 1589 1590 private UserData readUserLP(int id) { 1591 int flags = 0; 1592 int serialNumber = id; 1593 String name = null; 1594 String account = null; 1595 String iconPath = null; 1596 long creationTime = 0L; 1597 long lastLoggedInTime = 0L; 1598 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 1599 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 1600 boolean partial = false; 1601 boolean guestToRemove = false; 1602 boolean persistSeedData = false; 1603 String seedAccountName = null; 1604 String seedAccountType = null; 1605 PersistableBundle seedAccountOptions = null; 1606 Bundle baseRestrictions = new Bundle(); 1607 Bundle localRestrictions = new Bundle(); 1608 1609 FileInputStream fis = null; 1610 try { 1611 AtomicFile userFile = 1612 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 1613 fis = userFile.openRead(); 1614 XmlPullParser parser = Xml.newPullParser(); 1615 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1616 int type; 1617 while ((type = parser.next()) != XmlPullParser.START_TAG 1618 && type != XmlPullParser.END_DOCUMENT) { 1619 // Skip 1620 } 1621 1622 if (type != XmlPullParser.START_TAG) { 1623 Slog.e(LOG_TAG, "Unable to read user " + id); 1624 return null; 1625 } 1626 1627 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 1628 int storedId = readIntAttribute(parser, ATTR_ID, -1); 1629 if (storedId != id) { 1630 Slog.e(LOG_TAG, "User id does not match the file name"); 1631 return null; 1632 } 1633 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 1634 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 1635 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 1636 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 1637 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 1638 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 1639 UserInfo.NO_PROFILE_GROUP_ID); 1640 restrictedProfileParentId = readIntAttribute(parser, 1641 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 1642 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 1643 if ("true".equals(valueString)) { 1644 partial = true; 1645 } 1646 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 1647 if ("true".equals(valueString)) { 1648 guestToRemove = true; 1649 } 1650 1651 seedAccountName = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_NAME); 1652 seedAccountType = parser.getAttributeValue(null, ATTR_SEED_ACCOUNT_TYPE); 1653 if (seedAccountName != null || seedAccountType != null) { 1654 persistSeedData = true; 1655 } 1656 1657 int outerDepth = parser.getDepth(); 1658 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1659 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1660 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1661 continue; 1662 } 1663 String tag = parser.getName(); 1664 if (TAG_NAME.equals(tag)) { 1665 type = parser.next(); 1666 if (type == XmlPullParser.TEXT) { 1667 name = parser.getText(); 1668 } 1669 } else if (TAG_RESTRICTIONS.equals(tag)) { 1670 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 1671 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 1672 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 1673 } else if (TAG_ACCOUNT.equals(tag)) { 1674 type = parser.next(); 1675 if (type == XmlPullParser.TEXT) { 1676 account = parser.getText(); 1677 } 1678 } else if (TAG_SEED_ACCOUNT_OPTIONS.equals(tag)) { 1679 seedAccountOptions = PersistableBundle.restoreFromXml(parser); 1680 persistSeedData = true; 1681 } 1682 } 1683 } 1684 1685 // Create the UserInfo object that gets passed around 1686 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 1687 userInfo.serialNumber = serialNumber; 1688 userInfo.creationTime = creationTime; 1689 userInfo.lastLoggedInTime = lastLoggedInTime; 1690 userInfo.partial = partial; 1691 userInfo.guestToRemove = guestToRemove; 1692 userInfo.profileGroupId = profileGroupId; 1693 userInfo.restrictedProfileParentId = restrictedProfileParentId; 1694 1695 // Create the UserData object that's internal to this class 1696 UserData userData = new UserData(); 1697 userData.info = userInfo; 1698 userData.account = account; 1699 userData.seedAccountName = seedAccountName; 1700 userData.seedAccountType = seedAccountType; 1701 userData.persistSeedData = persistSeedData; 1702 userData.seedAccountOptions = seedAccountOptions; 1703 1704 synchronized (mRestrictionsLock) { 1705 mBaseUserRestrictions.put(id, baseRestrictions); 1706 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 1707 } 1708 return userData; 1709 } catch (IOException ioe) { 1710 } catch (XmlPullParserException pe) { 1711 } finally { 1712 if (fis != null) { 1713 try { 1714 fis.close(); 1715 } catch (IOException e) { 1716 } 1717 } 1718 } 1719 return null; 1720 } 1721 1722 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1723 String valueString = parser.getAttributeValue(null, attr); 1724 if (valueString == null) return defaultValue; 1725 try { 1726 return Integer.parseInt(valueString); 1727 } catch (NumberFormatException nfe) { 1728 return defaultValue; 1729 } 1730 } 1731 1732 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1733 String valueString = parser.getAttributeValue(null, attr); 1734 if (valueString == null) return defaultValue; 1735 try { 1736 return Long.parseLong(valueString); 1737 } catch (NumberFormatException nfe) { 1738 return defaultValue; 1739 } 1740 } 1741 1742 private boolean isPackageInstalled(String pkg, int userId) { 1743 final ApplicationInfo info = mPm.getApplicationInfo(pkg, 1744 PackageManager.GET_UNINSTALLED_PACKAGES, 1745 userId); 1746 if (info == null || (info.flags&ApplicationInfo.FLAG_INSTALLED) == 0) { 1747 return false; 1748 } 1749 return true; 1750 } 1751 1752 /** 1753 * Removes the app restrictions file for a specific package and user id, if it exists. 1754 */ 1755 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1756 synchronized (mPackagesLock) { 1757 File dir = Environment.getUserSystemDirectory(userId); 1758 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1759 if (resFile.exists()) { 1760 resFile.delete(); 1761 } 1762 } 1763 } 1764 1765 @Override 1766 public UserInfo createProfileForUser(String name, int flags, int userId) { 1767 checkManageUsersPermission("Only the system can create users"); 1768 return createUserInternal(name, flags, userId); 1769 } 1770 1771 @Override 1772 public UserInfo createUser(String name, int flags) { 1773 checkManageUsersPermission("Only the system can create users"); 1774 return createUserInternal(name, flags, UserHandle.USER_NULL); 1775 } 1776 1777 private UserInfo createUserInternal(String name, int flags, int parentId) { 1778 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 1779 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1780 return null; 1781 } 1782 if (ActivityManager.isLowRamDeviceStatic()) { 1783 return null; 1784 } 1785 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1786 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 1787 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 1788 final long ident = Binder.clearCallingIdentity(); 1789 UserInfo userInfo; 1790 UserData userData; 1791 final int userId; 1792 try { 1793 synchronized (mPackagesLock) { 1794 UserData parent = null; 1795 if (parentId != UserHandle.USER_NULL) { 1796 synchronized (mUsersLock) { 1797 parent = getUserDataLU(parentId); 1798 } 1799 if (parent == null) return null; 1800 } 1801 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 1802 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 1803 return null; 1804 } 1805 if (!isGuest && !isManagedProfile && isUserLimitReached()) { 1806 // If we're not adding a guest user or a managed profile and the limit has 1807 // been reached, cannot add a user. 1808 return null; 1809 } 1810 // If we're adding a guest and there already exists one, bail. 1811 if (isGuest && findCurrentGuestUser() != null) { 1812 return null; 1813 } 1814 // In legacy mode, restricted profile's parent can only be the owner user 1815 if (isRestricted && !UserManager.isSplitSystemUser() 1816 && (parentId != UserHandle.USER_SYSTEM)) { 1817 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 1818 return null; 1819 } 1820 if (isRestricted && UserManager.isSplitSystemUser()) { 1821 if (parent == null) { 1822 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 1823 + "specified"); 1824 return null; 1825 } 1826 if (!parent.info.canHaveProfile()) { 1827 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 1828 + "created for the specified parent user id " + parentId); 1829 return null; 1830 } 1831 } 1832 // In split system user mode, we assign the first human user the primary flag. 1833 // And if there is no device owner, we also assign the admin flag to primary user. 1834 if (UserManager.isSplitSystemUser() 1835 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 1836 flags |= UserInfo.FLAG_PRIMARY; 1837 synchronized (mUsersLock) { 1838 if (!mIsDeviceManaged) { 1839 flags |= UserInfo.FLAG_ADMIN; 1840 } 1841 } 1842 } 1843 1844 if (parent != null && parent.info.isEphemeral()) { 1845 flags |= UserInfo.FLAG_EPHEMERAL; 1846 } 1847 userId = getNextAvailableId(); 1848 userInfo = new UserInfo(userId, name, null, flags); 1849 userInfo.serialNumber = mNextSerialNumber++; 1850 long now = System.currentTimeMillis(); 1851 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1852 userInfo.partial = true; 1853 userData = new UserData(); 1854 userData.info = userInfo; 1855 Environment.getUserSystemDirectory(userInfo.id).mkdirs(); 1856 synchronized (mUsersLock) { 1857 mUsers.put(userId, userData); 1858 } 1859 writeUserListLP(); 1860 if (parent != null) { 1861 if (isManagedProfile) { 1862 if (parent.info.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1863 parent.info.profileGroupId = parent.info.id; 1864 writeUserLP(parent); 1865 } 1866 userInfo.profileGroupId = parent.info.profileGroupId; 1867 } else if (isRestricted) { 1868 if (parent.info.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 1869 parent.info.restrictedProfileParentId = parent.info.id; 1870 writeUserLP(parent); 1871 } 1872 userInfo.restrictedProfileParentId = parent.info.restrictedProfileParentId; 1873 } 1874 } 1875 } 1876 final StorageManager storage = mContext.getSystemService(StorageManager.class); 1877 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 1878 for (VolumeInfo vol : storage.getWritablePrivateVolumes()) { 1879 final String volumeUuid = vol.getFsUuid(); 1880 try { 1881 final File userDir = Environment.getDataUserDirectory(volumeUuid, userId); 1882 storage.prepareUserStorage( 1883 volumeUuid, userId, userInfo.serialNumber, userInfo.isEphemeral()); 1884 enforceSerialNumber(userDir, userInfo.serialNumber); 1885 } catch (IOException e) { 1886 Log.wtf(LOG_TAG, "Failed to create user directory on " + volumeUuid, e); 1887 } 1888 } 1889 mPm.createNewUser(userId); 1890 userInfo.partial = false; 1891 synchronized (mPackagesLock) { 1892 writeUserLP(userData); 1893 } 1894 updateUserIds(); 1895 Bundle restrictions = new Bundle(); 1896 if (isGuest) { 1897 synchronized (mGuestRestrictions) { 1898 restrictions.putAll(mGuestRestrictions); 1899 } 1900 } 1901 synchronized (mRestrictionsLock) { 1902 mBaseUserRestrictions.append(userId, restrictions); 1903 } 1904 mPm.newUserCreated(userId); 1905 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 1906 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 1907 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 1908 android.Manifest.permission.MANAGE_USERS); 1909 MetricsLogger.count(mContext, isGuest ? TRON_GUEST_CREATED : TRON_USER_CREATED, 1); 1910 } finally { 1911 Binder.restoreCallingIdentity(ident); 1912 } 1913 return userInfo; 1914 } 1915 1916 /** 1917 * @hide 1918 */ 1919 @Override 1920 public UserInfo createRestrictedProfile(String name, int parentUserId) { 1921 checkManageUsersPermission("setupRestrictedProfile"); 1922 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 1923 if (user == null) { 1924 return null; 1925 } 1926 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 1927 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 1928 // the putIntForUser() will fail. 1929 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 1930 android.provider.Settings.Secure.LOCATION_MODE, 1931 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 1932 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 1933 return user; 1934 } 1935 1936 /** 1937 * Find the current guest user. If the Guest user is partial, 1938 * then do not include it in the results as it is about to die. 1939 */ 1940 private UserInfo findCurrentGuestUser() { 1941 synchronized (mUsersLock) { 1942 final int size = mUsers.size(); 1943 for (int i = 0; i < size; i++) { 1944 final UserInfo user = mUsers.valueAt(i).info; 1945 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 1946 return user; 1947 } 1948 } 1949 } 1950 return null; 1951 } 1952 1953 /** 1954 * Mark this guest user for deletion to allow us to create another guest 1955 * and switch to that user before actually removing this guest. 1956 * @param userHandle the userid of the current guest 1957 * @return whether the user could be marked for deletion 1958 */ 1959 @Override 1960 public boolean markGuestForDeletion(int userHandle) { 1961 checkManageUsersPermission("Only the system can remove users"); 1962 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1963 UserManager.DISALLOW_REMOVE_USER, false)) { 1964 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1965 return false; 1966 } 1967 1968 long ident = Binder.clearCallingIdentity(); 1969 try { 1970 final UserData userData; 1971 synchronized (mPackagesLock) { 1972 synchronized (mUsersLock) { 1973 userData = mUsers.get(userHandle); 1974 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 1975 return false; 1976 } 1977 } 1978 if (!userData.info.isGuest()) { 1979 return false; 1980 } 1981 // We set this to a guest user that is to be removed. This is a temporary state 1982 // where we are allowed to add new Guest users, even if this one is still not 1983 // removed. This user will still show up in getUserInfo() calls. 1984 // If we don't get around to removing this Guest user, it will be purged on next 1985 // startup. 1986 userData.info.guestToRemove = true; 1987 // Mark it as disabled, so that it isn't returned any more when 1988 // profiles are queried. 1989 userData.info.flags |= UserInfo.FLAG_DISABLED; 1990 writeUserLP(userData); 1991 } 1992 } finally { 1993 Binder.restoreCallingIdentity(ident); 1994 } 1995 return true; 1996 } 1997 1998 /** 1999 * Removes a user and all data directories created for that user. This method should be called 2000 * after the user's processes have been terminated. 2001 * @param userHandle the user's id 2002 */ 2003 @Override 2004 public boolean removeUser(int userHandle) { 2005 checkManageUsersPermission("Only the system can remove users"); 2006 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 2007 UserManager.DISALLOW_REMOVE_USER, false)) { 2008 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 2009 return false; 2010 } 2011 2012 long ident = Binder.clearCallingIdentity(); 2013 try { 2014 final UserData userData; 2015 int currentUser = ActivityManager.getCurrentUser(); 2016 if (currentUser == userHandle) { 2017 Log.w(LOG_TAG, "Current user cannot be removed"); 2018 return false; 2019 } 2020 synchronized (mPackagesLock) { 2021 synchronized (mUsersLock) { 2022 userData = mUsers.get(userHandle); 2023 if (userHandle == 0 || userData == null || mRemovingUserIds.get(userHandle)) { 2024 return false; 2025 } 2026 2027 // We remember deleted user IDs to prevent them from being 2028 // reused during the current boot; they can still be reused 2029 // after a reboot. 2030 mRemovingUserIds.put(userHandle, true); 2031 } 2032 2033 try { 2034 mAppOpsService.removeUser(userHandle); 2035 } catch (RemoteException e) { 2036 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 2037 } 2038 // Set this to a partially created user, so that the user will be purged 2039 // on next startup, in case the runtime stops now before stopping and 2040 // removing the user completely. 2041 userData.info.partial = true; 2042 // Mark it as disabled, so that it isn't returned any more when 2043 // profiles are queried. 2044 userData.info.flags |= UserInfo.FLAG_DISABLED; 2045 writeUserLP(userData); 2046 } 2047 2048 if (userData.info.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 2049 && userData.info.isManagedProfile()) { 2050 // Send broadcast to notify system that the user removed was a 2051 // managed user. 2052 sendProfileRemovedBroadcast(userData.info.profileGroupId, userData.info.id); 2053 } 2054 2055 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 2056 int res; 2057 try { 2058 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 2059 new IStopUserCallback.Stub() { 2060 @Override 2061 public void userStopped(int userId) { 2062 finishRemoveUser(userId); 2063 } 2064 @Override 2065 public void userStopAborted(int userId) { 2066 } 2067 }); 2068 } catch (RemoteException e) { 2069 return false; 2070 } 2071 return res == ActivityManager.USER_OP_SUCCESS; 2072 } finally { 2073 Binder.restoreCallingIdentity(ident); 2074 } 2075 } 2076 2077 void finishRemoveUser(final int userHandle) { 2078 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 2079 // Let other services shutdown any activity and clean up their state before completely 2080 // wiping the user's system directory and removing from the user list 2081 long ident = Binder.clearCallingIdentity(); 2082 try { 2083 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 2084 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 2085 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 2086 android.Manifest.permission.MANAGE_USERS, 2087 2088 new BroadcastReceiver() { 2089 @Override 2090 public void onReceive(Context context, Intent intent) { 2091 if (DBG) { 2092 Slog.i(LOG_TAG, 2093 "USER_REMOVED broadcast sent, cleaning up user data " 2094 + userHandle); 2095 } 2096 new Thread() { 2097 @Override 2098 public void run() { 2099 // Clean up any ActivityManager state 2100 LocalServices.getService(ActivityManagerInternal.class) 2101 .onUserRemoved(userHandle); 2102 removeUserState(userHandle); 2103 } 2104 }.start(); 2105 } 2106 }, 2107 2108 null, Activity.RESULT_OK, null, null); 2109 } finally { 2110 Binder.restoreCallingIdentity(ident); 2111 } 2112 } 2113 2114 private void removeUserState(final int userHandle) { 2115 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 2116 // Cleanup package manager settings 2117 mPm.cleanUpUser(this, userHandle); 2118 2119 // Remove this user from the list 2120 synchronized (mUsersLock) { 2121 mUsers.remove(userHandle); 2122 mIsUserManaged.delete(userHandle); 2123 } 2124 synchronized (mRestrictionsLock) { 2125 mBaseUserRestrictions.remove(userHandle); 2126 mAppliedUserRestrictions.remove(userHandle); 2127 mCachedEffectiveUserRestrictions.remove(userHandle); 2128 mDevicePolicyLocalUserRestrictions.remove(userHandle); 2129 } 2130 // Remove user file 2131 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 2132 userFile.delete(); 2133 // Update the user list 2134 synchronized (mPackagesLock) { 2135 writeUserListLP(); 2136 } 2137 updateUserIds(); 2138 File userDir = Environment.getUserSystemDirectory(userHandle); 2139 File renamedUserDir = Environment.getUserSystemDirectory(UserHandle.USER_NULL - userHandle); 2140 if (userDir.renameTo(renamedUserDir)) { 2141 removeDirectoryRecursive(renamedUserDir); 2142 } else { 2143 removeDirectoryRecursive(userDir); 2144 } 2145 } 2146 2147 private void removeDirectoryRecursive(File parent) { 2148 if (parent.isDirectory()) { 2149 String[] files = parent.list(); 2150 for (String filename : files) { 2151 File child = new File(parent, filename); 2152 removeDirectoryRecursive(child); 2153 } 2154 } 2155 parent.delete(); 2156 } 2157 2158 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 2159 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 2160 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 2161 Intent.FLAG_RECEIVER_FOREGROUND); 2162 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 2163 managedProfileIntent.putExtra(Intent.EXTRA_USER_HANDLE, removedUserId); 2164 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 2165 } 2166 2167 @Override 2168 public Bundle getApplicationRestrictions(String packageName) { 2169 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 2170 } 2171 2172 @Override 2173 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 2174 if (UserHandle.getCallingUserId() != userId 2175 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 2176 checkSystemOrRoot("get application restrictions for other users/apps"); 2177 } 2178 synchronized (mPackagesLock) { 2179 // Read the restrictions from XML 2180 return readApplicationRestrictionsLP(packageName, userId); 2181 } 2182 } 2183 2184 @Override 2185 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2186 int userId) { 2187 checkSystemOrRoot("set application restrictions"); 2188 synchronized (mPackagesLock) { 2189 if (restrictions == null || restrictions.isEmpty()) { 2190 cleanAppRestrictionsForPackage(packageName, userId); 2191 } else { 2192 // Write the restrictions to XML 2193 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2194 } 2195 } 2196 2197 if (isPackageInstalled(packageName, userId)) { 2198 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2199 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2200 changeIntent.setPackage(packageName); 2201 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2202 mContext.sendBroadcastAsUser(changeIntent, new UserHandle(userId)); 2203 } 2204 } 2205 2206 private int getUidForPackage(String packageName) { 2207 long ident = Binder.clearCallingIdentity(); 2208 try { 2209 return mContext.getPackageManager().getApplicationInfo(packageName, 2210 PackageManager.GET_UNINSTALLED_PACKAGES).uid; 2211 } catch (NameNotFoundException nnfe) { 2212 return -1; 2213 } finally { 2214 Binder.restoreCallingIdentity(ident); 2215 } 2216 } 2217 2218 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2219 AtomicFile restrictionsFile = 2220 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2221 packageToRestrictionsFileName(packageName))); 2222 return readApplicationRestrictionsLP(restrictionsFile); 2223 } 2224 2225 @VisibleForTesting 2226 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2227 final Bundle restrictions = new Bundle(); 2228 final ArrayList<String> values = new ArrayList<>(); 2229 if (!restrictionsFile.getBaseFile().exists()) { 2230 return restrictions; 2231 } 2232 2233 FileInputStream fis = null; 2234 try { 2235 fis = restrictionsFile.openRead(); 2236 XmlPullParser parser = Xml.newPullParser(); 2237 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2238 XmlUtils.nextElement(parser); 2239 if (parser.getEventType() != XmlPullParser.START_TAG) { 2240 Slog.e(LOG_TAG, "Unable to read restrictions file " 2241 + restrictionsFile.getBaseFile()); 2242 return restrictions; 2243 } 2244 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2245 readEntry(restrictions, values, parser); 2246 } 2247 } catch (IOException|XmlPullParserException e) { 2248 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2249 } finally { 2250 IoUtils.closeQuietly(fis); 2251 } 2252 return restrictions; 2253 } 2254 2255 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2256 XmlPullParser parser) throws XmlPullParserException, IOException { 2257 int type = parser.getEventType(); 2258 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2259 String key = parser.getAttributeValue(null, ATTR_KEY); 2260 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2261 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2262 if (multiple != null) { 2263 values.clear(); 2264 int count = Integer.parseInt(multiple); 2265 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2266 if (type == XmlPullParser.START_TAG 2267 && parser.getName().equals(TAG_VALUE)) { 2268 values.add(parser.nextText().trim()); 2269 count--; 2270 } 2271 } 2272 String [] valueStrings = new String[values.size()]; 2273 values.toArray(valueStrings); 2274 restrictions.putStringArray(key, valueStrings); 2275 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2276 restrictions.putBundle(key, readBundleEntry(parser, values)); 2277 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2278 final int outerDepth = parser.getDepth(); 2279 ArrayList<Bundle> bundleList = new ArrayList<>(); 2280 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2281 Bundle childBundle = readBundleEntry(parser, values); 2282 bundleList.add(childBundle); 2283 } 2284 restrictions.putParcelableArray(key, 2285 bundleList.toArray(new Bundle[bundleList.size()])); 2286 } else { 2287 String value = parser.nextText().trim(); 2288 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2289 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2290 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2291 restrictions.putInt(key, Integer.parseInt(value)); 2292 } else { 2293 restrictions.putString(key, value); 2294 } 2295 } 2296 } 2297 } 2298 2299 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2300 throws IOException, XmlPullParserException { 2301 Bundle childBundle = new Bundle(); 2302 final int outerDepth = parser.getDepth(); 2303 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2304 readEntry(childBundle, values, parser); 2305 } 2306 return childBundle; 2307 } 2308 2309 private void writeApplicationRestrictionsLP(String packageName, 2310 Bundle restrictions, int userId) { 2311 AtomicFile restrictionsFile = new AtomicFile( 2312 new File(Environment.getUserSystemDirectory(userId), 2313 packageToRestrictionsFileName(packageName))); 2314 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2315 } 2316 2317 @VisibleForTesting 2318 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2319 FileOutputStream fos = null; 2320 try { 2321 fos = restrictionsFile.startWrite(); 2322 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2323 2324 final XmlSerializer serializer = new FastXmlSerializer(); 2325 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2326 serializer.startDocument(null, true); 2327 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2328 2329 serializer.startTag(null, TAG_RESTRICTIONS); 2330 writeBundle(restrictions, serializer); 2331 serializer.endTag(null, TAG_RESTRICTIONS); 2332 2333 serializer.endDocument(); 2334 restrictionsFile.finishWrite(fos); 2335 } catch (Exception e) { 2336 restrictionsFile.failWrite(fos); 2337 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2338 } 2339 } 2340 2341 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2342 throws IOException { 2343 for (String key : restrictions.keySet()) { 2344 Object value = restrictions.get(key); 2345 serializer.startTag(null, TAG_ENTRY); 2346 serializer.attribute(null, ATTR_KEY, key); 2347 2348 if (value instanceof Boolean) { 2349 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2350 serializer.text(value.toString()); 2351 } else if (value instanceof Integer) { 2352 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2353 serializer.text(value.toString()); 2354 } else if (value == null || value instanceof String) { 2355 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2356 serializer.text(value != null ? (String) value : ""); 2357 } else if (value instanceof Bundle) { 2358 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2359 writeBundle((Bundle) value, serializer); 2360 } else if (value instanceof Parcelable[]) { 2361 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2362 Parcelable[] array = (Parcelable[]) value; 2363 for (Parcelable parcelable : array) { 2364 if (!(parcelable instanceof Bundle)) { 2365 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2366 } 2367 serializer.startTag(null, TAG_ENTRY); 2368 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2369 writeBundle((Bundle) parcelable, serializer); 2370 serializer.endTag(null, TAG_ENTRY); 2371 } 2372 } else { 2373 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2374 String[] values = (String[]) value; 2375 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2376 for (String choice : values) { 2377 serializer.startTag(null, TAG_VALUE); 2378 serializer.text(choice != null ? choice : ""); 2379 serializer.endTag(null, TAG_VALUE); 2380 } 2381 } 2382 serializer.endTag(null, TAG_ENTRY); 2383 } 2384 } 2385 2386 @Override 2387 public int getUserSerialNumber(int userHandle) { 2388 synchronized (mUsersLock) { 2389 if (!exists(userHandle)) return -1; 2390 return getUserInfoLU(userHandle).serialNumber; 2391 } 2392 } 2393 2394 @Override 2395 public int getUserHandle(int userSerialNumber) { 2396 synchronized (mUsersLock) { 2397 for (int userId : mUserIds) { 2398 UserInfo info = getUserInfoLU(userId); 2399 if (info != null && info.serialNumber == userSerialNumber) return userId; 2400 } 2401 // Not found 2402 return -1; 2403 } 2404 } 2405 2406 @Override 2407 public long getUserCreationTime(int userHandle) { 2408 int callingUserId = UserHandle.getCallingUserId(); 2409 UserInfo userInfo = null; 2410 synchronized (mUsersLock) { 2411 if (callingUserId == userHandle) { 2412 userInfo = getUserInfoLU(userHandle); 2413 } else { 2414 UserInfo parent = getProfileParentLU(userHandle); 2415 if (parent != null && parent.id == callingUserId) { 2416 userInfo = getUserInfoLU(userHandle); 2417 } 2418 } 2419 } 2420 if (userInfo == null) { 2421 throw new SecurityException("userHandle can only be the calling user or a managed " 2422 + "profile associated with this user"); 2423 } 2424 return userInfo.creationTime; 2425 } 2426 2427 /** 2428 * Caches the list of user ids in an array, adjusting the array size when necessary. 2429 */ 2430 private void updateUserIds() { 2431 int num = 0; 2432 synchronized (mUsersLock) { 2433 final int userSize = mUsers.size(); 2434 for (int i = 0; i < userSize; i++) { 2435 if (!mUsers.valueAt(i).info.partial) { 2436 num++; 2437 } 2438 } 2439 final int[] newUsers = new int[num]; 2440 int n = 0; 2441 for (int i = 0; i < userSize; i++) { 2442 if (!mUsers.valueAt(i).info.partial) { 2443 newUsers[n++] = mUsers.keyAt(i); 2444 } 2445 } 2446 mUserIds = newUsers; 2447 } 2448 } 2449 2450 /** 2451 * Called right before a user is started. This gives us a chance to prepare 2452 * app storage and apply any user restrictions. 2453 */ 2454 public void onBeforeStartUser(int userId) { 2455 mPm.reconcileAppsData(userId, Installer.FLAG_DE_STORAGE); 2456 2457 if (userId != UserHandle.USER_SYSTEM) { 2458 synchronized (mRestrictionsLock) { 2459 applyUserRestrictionsLR(userId); 2460 } 2461 } 2462 } 2463 2464 /** 2465 * Called right before a user is unlocked. This gives us a chance to prepare 2466 * app storage. 2467 */ 2468 public void onBeforeUnlockUser(int userId) { 2469 mPm.reconcileAppsData(userId, Installer.FLAG_CE_STORAGE); 2470 } 2471 2472 /** 2473 * Make a note of the last started time of a user and do some cleanup. 2474 * @param userId the user that was just foregrounded 2475 */ 2476 public void onUserForeground(int userId) { 2477 UserData userData = getUserDataNoChecks(userId); 2478 if (userData == null || userData.info.partial) { 2479 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2480 return; 2481 } 2482 long now = System.currentTimeMillis(); 2483 if (now > EPOCH_PLUS_30_YEARS) { 2484 userData.info.lastLoggedInTime = now; 2485 scheduleWriteUser(userData); 2486 } 2487 } 2488 2489 /** 2490 * Returns the next available user id, filling in any holes in the ids. 2491 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2492 * for data and battery stats collection, or unexpected cross-talk. 2493 */ 2494 private int getNextAvailableId() { 2495 synchronized (mUsersLock) { 2496 int i = MIN_USER_ID; 2497 while (i < MAX_USER_ID) { 2498 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2499 return i; 2500 } 2501 i++; 2502 } 2503 } 2504 throw new IllegalStateException("No user id available!"); 2505 } 2506 2507 private String packageToRestrictionsFileName(String packageName) { 2508 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2509 } 2510 2511 /** 2512 * Enforce that serial number stored in user directory inode matches the 2513 * given expected value. Gracefully sets the serial number if currently 2514 * undefined. 2515 * 2516 * @throws IOException when problem extracting serial number, or serial 2517 * number is mismatched. 2518 */ 2519 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2520 final int foundSerial = getSerialNumber(file); 2521 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 2522 2523 if (foundSerial == -1) { 2524 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 2525 try { 2526 setSerialNumber(file, serialNumber); 2527 } catch (IOException e) { 2528 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 2529 } 2530 2531 } else if (foundSerial != serialNumber) { 2532 throw new IOException("Found serial number " + foundSerial 2533 + " doesn't match expected " + serialNumber); 2534 } 2535 } 2536 2537 /** 2538 * Set serial number stored in user directory inode. 2539 * 2540 * @throws IOException if serial number was already set 2541 */ 2542 private static void setSerialNumber(File file, int serialNumber) 2543 throws IOException { 2544 try { 2545 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 2546 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 2547 } catch (ErrnoException e) { 2548 throw e.rethrowAsIOException(); 2549 } 2550 } 2551 2552 /** 2553 * Return serial number stored in user directory inode. 2554 * 2555 * @return parsed serial number, or -1 if not set 2556 */ 2557 private static int getSerialNumber(File file) throws IOException { 2558 try { 2559 final byte[] buf = new byte[256]; 2560 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 2561 final String serial = new String(buf, 0, len); 2562 try { 2563 return Integer.parseInt(serial); 2564 } catch (NumberFormatException e) { 2565 throw new IOException("Bad serial number: " + serial); 2566 } 2567 } catch (ErrnoException e) { 2568 if (e.errno == OsConstants.ENODATA) { 2569 return -1; 2570 } else { 2571 throw e.rethrowAsIOException(); 2572 } 2573 } 2574 } 2575 2576 @Override 2577 public void setSeedAccountData(int userId, String accountName, String accountType, 2578 PersistableBundle accountOptions, boolean persist) { 2579 checkManageUsersPermission("Require MANAGE_USERS permission to set user seed data"); 2580 synchronized (mPackagesLock) { 2581 final UserData userData; 2582 synchronized (mUsersLock) { 2583 userData = getUserDataLU(userId); 2584 if (userData == null) { 2585 Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId); 2586 return; 2587 } 2588 userData.seedAccountName = accountName; 2589 userData.seedAccountType = accountType; 2590 userData.seedAccountOptions = accountOptions; 2591 userData.persistSeedData = persist; 2592 } 2593 if (persist) { 2594 writeUserLP(userData); 2595 } 2596 } 2597 } 2598 2599 @Override 2600 public String getSeedAccountName() throws RemoteException { 2601 checkManageUsersPermission("Cannot get seed account information"); 2602 synchronized (mUsersLock) { 2603 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2604 return userData.seedAccountName; 2605 } 2606 } 2607 2608 @Override 2609 public String getSeedAccountType() throws RemoteException { 2610 checkManageUsersPermission("Cannot get seed account information"); 2611 synchronized (mUsersLock) { 2612 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2613 return userData.seedAccountType; 2614 } 2615 } 2616 2617 @Override 2618 public PersistableBundle getSeedAccountOptions() throws RemoteException { 2619 checkManageUsersPermission("Cannot get seed account information"); 2620 synchronized (mUsersLock) { 2621 UserData userData = getUserDataLU(UserHandle.getCallingUserId()); 2622 return userData.seedAccountOptions; 2623 } 2624 } 2625 2626 @Override 2627 public void clearSeedAccountData() throws RemoteException { 2628 checkManageUsersPermission("Cannot clear seed account information"); 2629 synchronized (mPackagesLock) { 2630 UserData userData; 2631 synchronized (mUsersLock) { 2632 userData = getUserDataLU(UserHandle.getCallingUserId()); 2633 if (userData == null) return; 2634 userData.clearSeedAccountData(); 2635 } 2636 writeUserLP(userData); 2637 } 2638 } 2639 2640 @Override 2641 public boolean someUserHasSeedAccount(String accountName, String accountType) 2642 throws RemoteException { 2643 checkManageUsersPermission("Cannot check seed account information"); 2644 synchronized (mUsersLock) { 2645 final int userSize = mUsers.size(); 2646 for (int i = 0; i < userSize; i++) { 2647 final UserData data = mUsers.valueAt(i); 2648 if (data.info.isInitialized()) continue; 2649 if (data.seedAccountName == null || !data.seedAccountName.equals(accountName)) { 2650 continue; 2651 } 2652 if (data.seedAccountType == null || !data.seedAccountType.equals(accountType)) { 2653 continue; 2654 } 2655 return true; 2656 } 2657 } 2658 return false; 2659 } 2660 2661 @Override 2662 public void onShellCommand(FileDescriptor in, FileDescriptor out, 2663 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 2664 (new Shell()).exec(this, in, out, err, args, resultReceiver); 2665 } 2666 2667 int onShellCommand(Shell shell, String cmd) { 2668 if (cmd == null) { 2669 return shell.handleDefaultCommands(cmd); 2670 } 2671 2672 final PrintWriter pw = shell.getOutPrintWriter(); 2673 try { 2674 switch(cmd) { 2675 case "list": 2676 return runList(pw); 2677 } 2678 } catch (RemoteException e) { 2679 pw.println("Remote exception: " + e); 2680 } 2681 return -1; 2682 } 2683 2684 private int runList(PrintWriter pw) throws RemoteException { 2685 final IActivityManager am = ActivityManagerNative.getDefault(); 2686 final List<UserInfo> users = getUsers(false); 2687 if (users == null) { 2688 pw.println("Error: couldn't get users"); 2689 return 1; 2690 } else { 2691 pw.println("Users:"); 2692 for (int i = 0; i < users.size(); i++) { 2693 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 2694 pw.println("\t" + users.get(i).toString() + running); 2695 } 2696 return 0; 2697 } 2698 } 2699 2700 @Override 2701 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2702 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2703 != PackageManager.PERMISSION_GRANTED) { 2704 pw.println("Permission Denial: can't dump UserManager from from pid=" 2705 + Binder.getCallingPid() 2706 + ", uid=" + Binder.getCallingUid() 2707 + " without permission " 2708 + android.Manifest.permission.DUMP); 2709 return; 2710 } 2711 2712 long now = System.currentTimeMillis(); 2713 StringBuilder sb = new StringBuilder(); 2714 synchronized (mPackagesLock) { 2715 synchronized (mUsersLock) { 2716 pw.println("Users:"); 2717 for (int i = 0; i < mUsers.size(); i++) { 2718 UserData userData = mUsers.valueAt(i); 2719 if (userData == null) { 2720 continue; 2721 } 2722 UserInfo userInfo = userData.info; 2723 final int userId = userInfo.id; 2724 pw.print(" "); pw.print(userInfo); 2725 pw.print(" serialNo="); pw.print(userInfo.serialNumber); 2726 if (mRemovingUserIds.get(userId)) { 2727 pw.print(" <removing> "); 2728 } 2729 if (userInfo.partial) { 2730 pw.print(" <partial>"); 2731 } 2732 pw.println(); 2733 pw.print(" Created: "); 2734 if (userInfo.creationTime == 0) { 2735 pw.println("<unknown>"); 2736 } else { 2737 sb.setLength(0); 2738 TimeUtils.formatDuration(now - userInfo.creationTime, sb); 2739 sb.append(" ago"); 2740 pw.println(sb); 2741 } 2742 pw.print(" Last logged in: "); 2743 if (userInfo.lastLoggedInTime == 0) { 2744 pw.println("<unknown>"); 2745 } else { 2746 sb.setLength(0); 2747 TimeUtils.formatDuration(now - userInfo.lastLoggedInTime, sb); 2748 sb.append(" ago"); 2749 pw.println(sb); 2750 } 2751 pw.print(" Has profile owner: "); 2752 pw.println(mIsUserManaged.get(userId)); 2753 pw.println(" Restrictions:"); 2754 synchronized (mRestrictionsLock) { 2755 UserRestrictionsUtils.dumpRestrictions( 2756 pw, " ", mBaseUserRestrictions.get(userInfo.id)); 2757 pw.println(" Device policy local restrictions:"); 2758 UserRestrictionsUtils.dumpRestrictions( 2759 pw, " ", mDevicePolicyLocalUserRestrictions.get(userInfo.id)); 2760 pw.println(" Effective restrictions:"); 2761 UserRestrictionsUtils.dumpRestrictions( 2762 pw, " ", mCachedEffectiveUserRestrictions.get(userInfo.id)); 2763 } 2764 2765 if (userData.account != null) { 2766 pw.print(" Account name: " + userData.account); 2767 pw.println(); 2768 } 2769 2770 if (userData.seedAccountName != null) { 2771 pw.print(" Seed account name: " + userData.seedAccountName); 2772 pw.println(); 2773 if (userData.seedAccountType != null) { 2774 pw.print(" account type: " + userData.seedAccountType); 2775 pw.println(); 2776 } 2777 if (userData.seedAccountOptions != null) { 2778 pw.print(" account options exist"); 2779 pw.println(); 2780 } 2781 } 2782 } 2783 } 2784 pw.println(); 2785 pw.println(" Device policy global restrictions:"); 2786 synchronized (mRestrictionsLock) { 2787 UserRestrictionsUtils 2788 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 2789 } 2790 pw.println(); 2791 pw.println(" Guest restrictions:"); 2792 synchronized (mGuestRestrictions) { 2793 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 2794 } 2795 synchronized (mUsersLock) { 2796 pw.println(); 2797 pw.println(" Device managed: " + mIsDeviceManaged); 2798 } 2799 // Dump some capabilities 2800 pw.println(); 2801 pw.println(" Max users: " + UserManager.getMaxSupportedUsers()); 2802 pw.println(" Supports switchable users: " + UserManager.supportsMultipleUsers()); 2803 } 2804 } 2805 2806 final class MainHandler extends Handler { 2807 2808 @Override 2809 public void handleMessage(Message msg) { 2810 switch (msg.what) { 2811 case WRITE_USER_MSG: 2812 removeMessages(WRITE_USER_MSG, msg.obj); 2813 synchronized (mPackagesLock) { 2814 int userId = ((UserData) msg.obj).info.id; 2815 UserData userData = getUserDataNoChecks(userId); 2816 if (userData != null) { 2817 writeUserLP(userData); 2818 } 2819 } 2820 } 2821 } 2822 } 2823 2824 /** 2825 * @param userId 2826 * @return whether the user has been initialized yet 2827 */ 2828 boolean isInitialized(int userId) { 2829 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 2830 } 2831 2832 private class LocalService extends UserManagerInternal { 2833 @Override 2834 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 2835 @Nullable Bundle globalRestrictions) { 2836 UserManagerService.this.setDevicePolicyUserRestrictions(userId, localRestrictions, 2837 globalRestrictions); 2838 } 2839 2840 @Override 2841 public Bundle getBaseUserRestrictions(int userId) { 2842 synchronized (mRestrictionsLock) { 2843 return mBaseUserRestrictions.get(userId); 2844 } 2845 } 2846 2847 @Override 2848 public void setBaseUserRestrictionsByDpmsForMigration( 2849 int userId, Bundle baseRestrictions) { 2850 synchronized (mRestrictionsLock) { 2851 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 2852 invalidateEffectiveUserRestrictionsLR(userId); 2853 } 2854 2855 final UserData userData = getUserDataNoChecks(userId); 2856 synchronized (mPackagesLock) { 2857 if (userData != null) { 2858 writeUserLP(userData); 2859 } else { 2860 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 2861 } 2862 } 2863 } 2864 2865 @Override 2866 public boolean getUserRestriction(int userId, String key) { 2867 return getUserRestrictions(userId).getBoolean(key); 2868 } 2869 2870 @Override 2871 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 2872 synchronized (mUserRestrictionsListeners) { 2873 mUserRestrictionsListeners.add(listener); 2874 } 2875 } 2876 2877 @Override 2878 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 2879 synchronized (mUserRestrictionsListeners) { 2880 mUserRestrictionsListeners.remove(listener); 2881 } 2882 } 2883 2884 @Override 2885 public void setDeviceManaged(boolean isManaged) { 2886 synchronized (mUsersLock) { 2887 mIsDeviceManaged = isManaged; 2888 } 2889 } 2890 2891 @Override 2892 public void setUserManaged(int userId, boolean isManaged) { 2893 synchronized (mUsersLock) { 2894 mIsUserManaged.put(userId, isManaged); 2895 } 2896 } 2897 } 2898 2899 private class Shell extends ShellCommand { 2900 @Override 2901 public int onCommand(String cmd) { 2902 return onShellCommand(this, cmd); 2903 } 2904 2905 @Override 2906 public void onHelp() { 2907 final PrintWriter pw = getOutPrintWriter(); 2908 pw.println("User manager (user) commands:"); 2909 pw.println(" help"); 2910 pw.println(" Print this help text."); 2911 pw.println(""); 2912 pw.println(" list"); 2913 pw.println(" Prints all users on the system."); 2914 } 2915 } 2916 2917 private static void debug(String message) { 2918 Log.d(LOG_TAG, message + 2919 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 2920 } 2921} 2922