UserManagerService.java revision 3bbceddb94d627495c0022d6e3f92a5cb16aebea
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.annotation.NonNull; 20import android.annotation.Nullable; 21import android.app.Activity; 22import android.app.ActivityManager; 23import android.app.ActivityManagerInternal; 24import android.app.ActivityManagerNative; 25import android.app.IActivityManager; 26import android.app.IStopUserCallback; 27import android.content.BroadcastReceiver; 28import android.content.Context; 29import android.content.Intent; 30import android.content.pm.ApplicationInfo; 31import android.content.pm.PackageManager; 32import android.content.pm.PackageManager.NameNotFoundException; 33import android.content.pm.UserInfo; 34import android.graphics.Bitmap; 35import android.os.Binder; 36import android.os.Bundle; 37import android.os.Debug; 38import android.os.Environment; 39import android.os.FileUtils; 40import android.os.Handler; 41import android.os.IUserManager; 42import android.os.Message; 43import android.os.ParcelFileDescriptor; 44import android.os.Parcelable; 45import android.os.Process; 46import android.os.RemoteException; 47import android.os.ResultReceiver; 48import android.os.ServiceManager; 49import android.os.ShellCommand; 50import android.os.UserHandle; 51import android.os.UserManager; 52import android.os.UserManagerInternal; 53import android.os.UserManagerInternal.UserRestrictionsListener; 54import android.os.storage.StorageManager; 55import android.os.storage.VolumeInfo; 56import android.system.ErrnoException; 57import android.system.Os; 58import android.system.OsConstants; 59import android.util.AtomicFile; 60import android.util.Log; 61import android.util.Slog; 62import android.util.SparseArray; 63import android.util.SparseBooleanArray; 64import android.util.TimeUtils; 65import android.util.Xml; 66 67import com.android.internal.annotations.GuardedBy; 68import com.android.internal.annotations.VisibleForTesting; 69import com.android.internal.app.IAppOpsService; 70import com.android.internal.util.FastXmlSerializer; 71import com.android.internal.util.Preconditions; 72import com.android.internal.util.XmlUtils; 73import com.android.server.LocalServices; 74 75import org.xmlpull.v1.XmlPullParser; 76import org.xmlpull.v1.XmlPullParserException; 77import org.xmlpull.v1.XmlSerializer; 78 79import java.io.BufferedOutputStream; 80import java.io.File; 81import java.io.FileDescriptor; 82import java.io.FileInputStream; 83import java.io.FileNotFoundException; 84import java.io.FileOutputStream; 85import java.io.IOException; 86import java.io.PrintWriter; 87import java.nio.charset.StandardCharsets; 88import java.util.ArrayList; 89import java.util.List; 90 91import libcore.io.IoUtils; 92 93/** 94 * Service for {@link UserManager}. 95 * 96 * Method naming convention: 97 * <ul> 98 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 99 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 100 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 101 * </ul> 102 */ 103public class UserManagerService extends IUserManager.Stub { 104 private static final String LOG_TAG = "UserManagerService"; 105 static final boolean DBG = false; // DO NOT SUBMIT WITH TRUE 106 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 107 108 private static final String TAG_NAME = "name"; 109 private static final String ATTR_FLAGS = "flags"; 110 private static final String ATTR_ICON_PATH = "icon"; 111 private static final String ATTR_ID = "id"; 112 private static final String ATTR_CREATION_TIME = "created"; 113 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 114 private static final String ATTR_SERIAL_NO = "serialNumber"; 115 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 116 private static final String ATTR_PARTIAL = "partial"; 117 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 118 private static final String ATTR_USER_VERSION = "version"; 119 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 120 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 121 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 122 private static final String TAG_USERS = "users"; 123 private static final String TAG_USER = "user"; 124 private static final String TAG_RESTRICTIONS = "restrictions"; 125 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 126 private static final String TAG_ENTRY = "entry"; 127 private static final String TAG_VALUE = "value"; 128 private static final String ATTR_KEY = "key"; 129 private static final String ATTR_VALUE_TYPE = "type"; 130 private static final String ATTR_MULTIPLE = "m"; 131 132 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 133 private static final String ATTR_TYPE_STRING = "s"; 134 private static final String ATTR_TYPE_BOOLEAN = "b"; 135 private static final String ATTR_TYPE_INTEGER = "i"; 136 private static final String ATTR_TYPE_BUNDLE = "B"; 137 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 138 139 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 140 private static final String USER_LIST_FILENAME = "userlist.xml"; 141 private static final String USER_PHOTO_FILENAME = "photo.png"; 142 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 143 144 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 145 private static final String XML_SUFFIX = ".xml"; 146 147 private static final int MIN_USER_ID = 10; 148 // We need to keep process uid within Integer.MAX_VALUE. 149 private static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 150 151 private static final int USER_VERSION = 6; 152 153 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 154 155 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 156 // without first making sure that the rest of the framework is prepared for it. 157 private static final int MAX_MANAGED_PROFILES = 1; 158 159 static final int WRITE_USER_MSG = 1; 160 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 161 162 private static final String XATTR_SERIAL = "user.serial"; 163 164 private final Context mContext; 165 private final PackageManagerService mPm; 166 private final Object mPackagesLock; 167 // Short-term lock for internal state, when interaction/sync with PM is not required 168 private final Object mUsersLock = new Object(); 169 private final Object mRestrictionsLock = new Object(); 170 171 private final Handler mHandler; 172 173 private final File mUsersDir; 174 private final File mUserListFile; 175 176 @GuardedBy("mUsersLock") 177 private final SparseArray<UserInfo> mUsers = new SparseArray<>(); 178 179 /** 180 * User restrictions set via UserManager. This doesn't include restrictions set by 181 * device owner / profile owners. 182 * 183 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 184 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 185 * maybe shared between {@link #mBaseUserRestrictions} and 186 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 187 * (Otherwise we won't be able to detect what restrictions have changed in 188 * {@link #updateUserRestrictionsInternalLR}. 189 */ 190 @GuardedBy("mRestrictionsLock") 191 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 192 193 /** 194 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 195 * with device / profile owner restrictions. We'll initialize it lazily; use 196 * {@link #getEffectiveUserRestrictions} to access it. 197 * 198 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 199 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 200 * maybe shared between {@link #mBaseUserRestrictions} and 201 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 202 * (Otherwise we won't be able to detect what restrictions have changed in 203 * {@link #updateUserRestrictionsInternalLR}. 204 */ 205 @GuardedBy("mRestrictionsLock") 206 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 207 208 /** 209 * User restrictions that have already been applied in 210 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 211 * that have changed since the last 212 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 213 */ 214 @GuardedBy("mRestrictionsLock") 215 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 216 217 /** 218 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 219 * that should be applied to all users, including guests. 220 */ 221 @GuardedBy("mRestrictionsLock") 222 private Bundle mDevicePolicyGlobalUserRestrictions; 223 224 /** 225 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 226 * for each user. 227 */ 228 @GuardedBy("mRestrictionsLock") 229 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 230 231 @GuardedBy("mGuestRestrictions") 232 private final Bundle mGuestRestrictions = new Bundle(); 233 234 /** 235 * Set of user IDs being actively removed. Removed IDs linger in this set 236 * for several seconds to work around a VFS caching issue. 237 */ 238 @GuardedBy("mUsersLock") 239 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 240 241 @GuardedBy("mUsersLock") 242 private int[] mUserIds; 243 @GuardedBy("mPackagesLock") 244 private int mNextSerialNumber; 245 private int mUserVersion = 0; 246 247 private IAppOpsService mAppOpsService; 248 249 private final LocalService mLocalService; 250 251 @GuardedBy("mUsersLock") 252 private boolean mIsDeviceManaged; 253 254 @GuardedBy("mUsersLock") 255 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 256 257 @GuardedBy("mUserRestrictionsListeners") 258 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 259 new ArrayList<>(); 260 261 private static UserManagerService sInstance; 262 263 public static UserManagerService getInstance() { 264 synchronized (UserManagerService.class) { 265 return sInstance; 266 } 267 } 268 269 @VisibleForTesting 270 UserManagerService(File dataDir) { 271 this(null, null, new Object(), dataDir); 272 } 273 274 /** 275 * Called by package manager to create the service. This is closely 276 * associated with the package manager, and the given lock is the 277 * package manager's own lock. 278 */ 279 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 280 this(context, pm, packagesLock, Environment.getDataDirectory()); 281 } 282 283 private UserManagerService(Context context, PackageManagerService pm, 284 Object packagesLock, File dataDir) { 285 mContext = context; 286 mPm = pm; 287 mPackagesLock = packagesLock; 288 mHandler = new MainHandler(); 289 synchronized (mPackagesLock) { 290 mUsersDir = new File(dataDir, USER_INFO_DIR); 291 mUsersDir.mkdirs(); 292 // Make zeroth user directory, for services to migrate their files to that location 293 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 294 userZeroDir.mkdirs(); 295 FileUtils.setPermissions(mUsersDir.toString(), 296 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 297 -1, -1); 298 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 299 initDefaultGuestRestrictions(); 300 readUserListLP(); 301 sInstance = this; 302 } 303 mLocalService = new LocalService(); 304 LocalServices.addService(UserManagerInternal.class, mLocalService); 305 } 306 307 void systemReady() { 308 // Prune out any partially created/partially removed users. 309 ArrayList<UserInfo> partials = new ArrayList<>(); 310 synchronized (mUsersLock) { 311 final int userSize = mUsers.size(); 312 for (int i = 0; i < userSize; i++) { 313 UserInfo ui = mUsers.valueAt(i); 314 if ((ui.partial || ui.guestToRemove) && i != 0) { 315 partials.add(ui); 316 } 317 } 318 } 319 final int partialsSize = partials.size(); 320 for (int i = 0; i < partialsSize; i++) { 321 UserInfo ui = partials.get(i); 322 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 323 + " (name=" + ui.name + ")"); 324 removeUserState(ui.id); 325 } 326 327 onUserForeground(UserHandle.USER_SYSTEM); 328 329 mAppOpsService = IAppOpsService.Stub.asInterface( 330 ServiceManager.getService(Context.APP_OPS_SERVICE)); 331 332 synchronized (mRestrictionsLock) { 333 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 334 } 335 } 336 337 @Override 338 public UserInfo getPrimaryUser() { 339 checkManageUsersPermission("query users"); 340 synchronized (mUsersLock) { 341 final int userSize = mUsers.size(); 342 for (int i = 0; i < userSize; i++) { 343 UserInfo ui = mUsers.valueAt(i); 344 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 345 return ui; 346 } 347 } 348 } 349 return null; 350 } 351 352 @Override 353 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 354 checkManageUsersPermission("query users"); 355 synchronized (mUsersLock) { 356 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 357 final int userSize = mUsers.size(); 358 for (int i = 0; i < userSize; i++) { 359 UserInfo ui = mUsers.valueAt(i); 360 if (ui.partial) { 361 continue; 362 } 363 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 364 users.add(ui); 365 } 366 } 367 return users; 368 } 369 } 370 371 @Override 372 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 373 if (userId != UserHandle.getCallingUserId()) { 374 checkManageUsersPermission("getting profiles related to user " + userId); 375 } 376 final long ident = Binder.clearCallingIdentity(); 377 try { 378 synchronized (mUsersLock) { 379 return getProfilesLU(userId, enabledOnly); 380 } 381 } finally { 382 Binder.restoreCallingIdentity(ident); 383 } 384 } 385 386 /** Assume permissions already checked and caller's identity cleared */ 387 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly) { 388 UserInfo user = getUserInfoLU(userId); 389 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 390 if (user == null) { 391 // Probably a dying user 392 return users; 393 } 394 final int userSize = mUsers.size(); 395 for (int i = 0; i < userSize; i++) { 396 UserInfo profile = mUsers.valueAt(i); 397 if (!isProfileOf(user, profile)) { 398 continue; 399 } 400 if (enabledOnly && !profile.isEnabled()) { 401 continue; 402 } 403 if (mRemovingUserIds.get(profile.id)) { 404 continue; 405 } 406 users.add(profile); 407 } 408 return users; 409 } 410 411 @Override 412 public int getCredentialOwnerProfile(int userHandle) { 413 checkManageUsersPermission("get the credential owner"); 414 if (!StorageManager.isFileBasedEncryptionEnabled()) { 415 synchronized (mUsersLock) { 416 UserInfo profileParent = getProfileParentLU(userHandle); 417 if (profileParent != null) { 418 return profileParent.id; 419 } 420 } 421 } 422 423 return userHandle; 424 } 425 426 @Override 427 public boolean isSameProfileGroup(int userId, int otherUserId) { 428 if (userId == otherUserId) return true; 429 checkManageUsersPermission("check if in the same profile group"); 430 synchronized (mPackagesLock) { 431 return isSameProfileGroupLP(userId, otherUserId); 432 } 433 } 434 435 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 436 synchronized (mUsersLock) { 437 UserInfo userInfo = getUserInfoLU(userId); 438 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 439 return false; 440 } 441 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 442 if (otherUserInfo == null 443 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 444 return false; 445 } 446 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 447 } 448 } 449 450 @Override 451 public UserInfo getProfileParent(int userHandle) { 452 checkManageUsersPermission("get the profile parent"); 453 synchronized (mUsersLock) { 454 return getProfileParentLU(userHandle); 455 } 456 } 457 458 private UserInfo getProfileParentLU(int userHandle) { 459 UserInfo profile = getUserInfoLU(userHandle); 460 if (profile == null) { 461 return null; 462 } 463 int parentUserId = profile.profileGroupId; 464 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 465 return null; 466 } else { 467 return getUserInfoLU(parentUserId); 468 } 469 } 470 471 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 472 return user.id == profile.id || 473 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 474 && user.profileGroupId == profile.profileGroupId); 475 } 476 477 @Override 478 public void setUserEnabled(int userId) { 479 checkManageUsersPermission("enable user"); 480 synchronized (mPackagesLock) { 481 UserInfo info; 482 synchronized (mUsersLock) { 483 info = getUserInfoLU(userId); 484 } 485 if (info != null && !info.isEnabled()) { 486 info.flags ^= UserInfo.FLAG_DISABLED; 487 writeUserLP(info); 488 } 489 } 490 } 491 492 @Override 493 public UserInfo getUserInfo(int userId) { 494 checkManageUsersPermission("query user"); 495 synchronized (mUsersLock) { 496 return getUserInfoLU(userId); 497 } 498 } 499 500 @Override 501 public boolean isRestricted() { 502 synchronized (mUsersLock) { 503 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 504 } 505 } 506 507 @Override 508 public boolean canHaveRestrictedProfile(int userId) { 509 checkManageUsersPermission("canHaveRestrictedProfile"); 510 synchronized (mUsersLock) { 511 final UserInfo userInfo = getUserInfoLU(userId); 512 if (userInfo == null || !userInfo.canHaveProfile()) { 513 return false; 514 } 515 if (!userInfo.isAdmin()) { 516 return false; 517 } 518 // restricted profile can be created if there is no DO set and the admin user has no PO; 519 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 520 } 521 } 522 523 /* 524 * Should be locked on mUsers before calling this. 525 */ 526 private UserInfo getUserInfoLU(int userId) { 527 UserInfo ui = mUsers.get(userId); 528 // If it is partial and not in the process of being removed, return as unknown user. 529 if (ui != null && ui.partial && !mRemovingUserIds.get(userId)) { 530 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 531 return null; 532 } 533 return ui; 534 } 535 536 /** 537 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 538 * <p>No permissions checking or any addition checks are made</p> 539 */ 540 private UserInfo getUserInfoNoChecks(int userId) { 541 synchronized (mUsersLock) { 542 return mUsers.get(userId); 543 } 544 } 545 546 /** Called by PackageManagerService */ 547 public boolean exists(int userId) { 548 return getUserInfoNoChecks(userId) != null; 549 } 550 551 @Override 552 public void setUserName(int userId, String name) { 553 checkManageUsersPermission("rename users"); 554 boolean changed = false; 555 synchronized (mPackagesLock) { 556 UserInfo info = getUserInfoNoChecks(userId); 557 if (info == null || info.partial) { 558 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 559 return; 560 } 561 if (name != null && !name.equals(info.name)) { 562 info.name = name; 563 writeUserLP(info); 564 changed = true; 565 } 566 } 567 if (changed) { 568 sendUserInfoChangedBroadcast(userId); 569 } 570 } 571 572 @Override 573 public void setUserIcon(int userId, Bitmap bitmap) { 574 checkManageUsersPermission("update users"); 575 long ident = Binder.clearCallingIdentity(); 576 try { 577 synchronized (mPackagesLock) { 578 UserInfo info = getUserInfoNoChecks(userId); 579 if (info == null || info.partial) { 580 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 581 return; 582 } 583 writeBitmapLP(info, bitmap); 584 writeUserLP(info); 585 } 586 sendUserInfoChangedBroadcast(userId); 587 } finally { 588 Binder.restoreCallingIdentity(ident); 589 } 590 } 591 592 private void sendUserInfoChangedBroadcast(int userId) { 593 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 594 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 595 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 596 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 597 } 598 599 @Override 600 public ParcelFileDescriptor getUserIcon(int userId) { 601 String iconPath; 602 synchronized (mPackagesLock) { 603 UserInfo info = getUserInfoNoChecks(userId); 604 if (info == null || info.partial) { 605 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + userId); 606 return null; 607 } 608 int callingGroupId = getUserInfoNoChecks(UserHandle.getCallingUserId()).profileGroupId; 609 if (callingGroupId == UserInfo.NO_PROFILE_GROUP_ID 610 || callingGroupId != info.profileGroupId) { 611 checkManageUsersPermission("get the icon of a user who is not related"); 612 } 613 if (info.iconPath == null) { 614 return null; 615 } 616 iconPath = info.iconPath; 617 } 618 619 try { 620 return ParcelFileDescriptor.open( 621 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 622 } catch (FileNotFoundException e) { 623 Log.e(LOG_TAG, "Couldn't find icon file", e); 624 } 625 return null; 626 } 627 628 public void makeInitialized(int userId) { 629 checkManageUsersPermission("makeInitialized"); 630 boolean scheduleWriteUser = false; 631 UserInfo info; 632 synchronized (mUsersLock) { 633 info = mUsers.get(userId); 634 if (info == null || info.partial) { 635 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 636 return; 637 } 638 if ((info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 639 info.flags |= UserInfo.FLAG_INITIALIZED; 640 scheduleWriteUser = true; 641 } 642 } 643 if (scheduleWriteUser) { 644 scheduleWriteUser(info); 645 } 646 } 647 648 /** 649 * If default guest restrictions haven't been initialized yet, add the basic 650 * restrictions. 651 */ 652 private void initDefaultGuestRestrictions() { 653 synchronized (mGuestRestrictions) { 654 if (mGuestRestrictions.isEmpty()) { 655 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 656 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 657 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 658 } 659 } 660 } 661 662 @Override 663 public Bundle getDefaultGuestRestrictions() { 664 checkManageUsersPermission("getDefaultGuestRestrictions"); 665 synchronized (mGuestRestrictions) { 666 return new Bundle(mGuestRestrictions); 667 } 668 } 669 670 @Override 671 public void setDefaultGuestRestrictions(Bundle restrictions) { 672 checkManageUsersPermission("setDefaultGuestRestrictions"); 673 synchronized (mGuestRestrictions) { 674 mGuestRestrictions.clear(); 675 mGuestRestrictions.putAll(restrictions); 676 } 677 synchronized (mPackagesLock) { 678 writeUserListLP(); 679 } 680 } 681 682 /** 683 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 684 */ 685 void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle local, 686 @Nullable Bundle global) { 687 Preconditions.checkNotNull(local); 688 boolean globalChanged = false; 689 boolean localChanged; 690 synchronized (mRestrictionsLock) { 691 if (global != null) { 692 // Update global. 693 globalChanged = !UserRestrictionsUtils.areEqual( 694 mDevicePolicyGlobalUserRestrictions, global); 695 if (globalChanged) { 696 mDevicePolicyGlobalUserRestrictions = global; 697 } 698 } 699 { 700 // Update local. 701 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 702 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 703 if (localChanged) { 704 mDevicePolicyLocalUserRestrictions.put(userId, local); 705 } 706 } 707 } 708 if (DBG) { 709 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 710 + " global=" + global + (globalChanged ? " (changed)" : "") 711 + " local=" + local + (localChanged ? " (changed)" : "") 712 ); 713 } 714 // Don't call them within the mRestrictionsLock. 715 synchronized (mPackagesLock) { 716 if (globalChanged) { 717 writeUserListLP(); 718 } 719 if (localChanged) { 720 writeUserLP(getUserInfoNoChecks(userId)); 721 } 722 } 723 724 synchronized (mRestrictionsLock) { 725 if (globalChanged) { 726 applyUserRestrictionsForAllUsersLR(); 727 } else if (localChanged) { 728 applyUserRestrictionsLR(userId); 729 } 730 } 731 } 732 733 @GuardedBy("mRestrictionsLock") 734 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 735 final Bundle baseRestrictions = 736 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 737 final Bundle global = mDevicePolicyGlobalUserRestrictions; 738 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 739 740 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 741 // Common case first. 742 return baseRestrictions; 743 } 744 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 745 UserRestrictionsUtils.merge(effective, global); 746 UserRestrictionsUtils.merge(effective, local); 747 748 return effective; 749 } 750 751 @GuardedBy("mRestrictionsLock") 752 private void invalidateEffectiveUserRestrictionsLR(int userId) { 753 if (DBG) { 754 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 755 } 756 mCachedEffectiveUserRestrictions.remove(userId); 757 } 758 759 private Bundle getEffectiveUserRestrictions(int userId) { 760 synchronized (mRestrictionsLock) { 761 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 762 if (restrictions == null) { 763 restrictions = computeEffectiveUserRestrictionsLR(userId); 764 mCachedEffectiveUserRestrictions.put(userId, restrictions); 765 } 766 return restrictions; 767 } 768 } 769 770 /** @return a specific user restriction that's in effect currently. */ 771 @Override 772 public boolean hasUserRestriction(String restrictionKey, int userId) { 773 Bundle restrictions = getEffectiveUserRestrictions(userId); 774 return restrictions != null && restrictions.getBoolean(restrictionKey); 775 } 776 777 /** 778 * @return UserRestrictions that are in effect currently. This always returns a new 779 * {@link Bundle}. 780 */ 781 @Override 782 public Bundle getUserRestrictions(int userId) { 783 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 784 } 785 786 @Override 787 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 788 checkManageUsersPermission("hasBaseUserRestriction"); 789 synchronized (mRestrictionsLock) { 790 Bundle bundle = mBaseUserRestrictions.get(userId); 791 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 792 } 793 } 794 795 @Override 796 public void setUserRestriction(String key, boolean value, int userId) { 797 checkManageUsersPermission("setUserRestriction"); 798 synchronized (mRestrictionsLock) { 799 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 800 // a copy. 801 final Bundle newRestrictions = UserRestrictionsUtils.clone( 802 mBaseUserRestrictions.get(userId)); 803 newRestrictions.putBoolean(key, value); 804 805 updateUserRestrictionsInternalLR(newRestrictions, userId); 806 } 807 } 808 809 /** 810 * Optionally updating user restrictions, calculate the effective user restrictions and also 811 * propagate to other services and system settings. 812 * 813 * @param newRestrictions User restrictions to set. 814 * If null, will not update user restrictions and only does the propagation. 815 * @param userId target user ID. 816 */ 817 @GuardedBy("mRestrictionsLock") 818 private void updateUserRestrictionsInternalLR( 819 @Nullable Bundle newRestrictions, int userId) { 820 821 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 822 mAppliedUserRestrictions.get(userId)); 823 824 // Update base restrictions. 825 if (newRestrictions != null) { 826 // If newRestrictions == the current one, it's probably a bug. 827 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 828 829 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 830 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 831 != newRestrictions); 832 833 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 834 mBaseUserRestrictions.put(userId, newRestrictions); 835 scheduleWriteUser(getUserInfoNoChecks(userId)); 836 } 837 } 838 839 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 840 841 mCachedEffectiveUserRestrictions.put(userId, effective); 842 843 // Apply the new restrictions. 844 if (DBG) { 845 debug("Applying user restrictions: userId=" + userId 846 + " new=" + effective + " prev=" + prevAppliedRestrictions); 847 } 848 849 if (mAppOpsService != null) { // We skip it until system-ready. 850 final long token = Binder.clearCallingIdentity(); 851 try { 852 mAppOpsService.setUserRestrictions(effective, userId); 853 } catch (RemoteException e) { 854 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 855 } finally { 856 Binder.restoreCallingIdentity(token); 857 } 858 } 859 860 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 861 862 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 863 } 864 865 private void propagateUserRestrictionsLR(final int userId, 866 Bundle newRestrictions, Bundle prevRestrictions) { 867 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 868 // actually, but we still need some kind of synchronization otherwise we might end up 869 // calling listeners out-of-order, thus "LR". 870 871 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 872 return; 873 } 874 875 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 876 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 877 878 mHandler.post(new Runnable() { 879 @Override 880 public void run() { 881 synchronized (mRestrictionsLock) { 882 UserRestrictionsUtils.applyUserRestrictionsLR( 883 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 884 } 885 886 final UserRestrictionsListener[] listeners; 887 synchronized (mUserRestrictionsListeners) { 888 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 889 mUserRestrictionsListeners.toArray(listeners); 890 } 891 for (int i = 0; i < listeners.length; i++) { 892 listeners[i].onUserRestrictionsChanged(userId, 893 newRestrictionsFinal, prevRestrictionsFinal); 894 } 895 } 896 }); 897 } 898 899 // Package private for the inner class. 900 void applyUserRestrictionsLR(int userId) { 901 updateUserRestrictionsInternalLR(null, userId); 902 } 903 904 @GuardedBy("mRestrictionsLock") 905 // Package private for the inner class. 906 void applyUserRestrictionsForAllUsersLR() { 907 if (DBG) { 908 debug("applyUserRestrictionsForAllUsersLR"); 909 } 910 // First, invalidate all cached values. 911 mCachedEffectiveUserRestrictions.clear(); 912 913 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 914 // it on a handler. 915 final Runnable r = new Runnable() { 916 @Override 917 public void run() { 918 // Then get the list of running users. 919 final int[] runningUsers; 920 try { 921 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 922 } catch (RemoteException e) { 923 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 924 return; 925 } 926 // Then re-calculate the effective restrictions and apply, only for running users. 927 // It's okay if a new user has started after the getRunningUserIds() call, 928 // because we'll do the same thing (re-calculate the restrictions and apply) 929 // when we start a user. 930 synchronized (mRestrictionsLock) { 931 for (int i = 0; i < runningUsers.length; i++) { 932 applyUserRestrictionsLR(runningUsers[i]); 933 } 934 } 935 } 936 }; 937 mHandler.post(r); 938 } 939 940 /** 941 * Check if we've hit the limit of how many users can be created. 942 */ 943 private boolean isUserLimitReached() { 944 int count; 945 synchronized (mUsersLock) { 946 count = getAliveUsersExcludingGuestsCountLU(); 947 } 948 return count >= UserManager.getMaxSupportedUsers(); 949 } 950 951 @Override 952 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 953 checkManageUsersPermission("check if more managed profiles can be added."); 954 if (ActivityManager.isLowRamDeviceStatic()) { 955 return false; 956 } 957 if (!mContext.getPackageManager().hasSystemFeature( 958 PackageManager.FEATURE_MANAGED_USERS)) { 959 return false; 960 } 961 // Limit number of managed profiles that can be created 962 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 963 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 964 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 965 return false; 966 } 967 synchronized(mUsersLock) { 968 UserInfo userInfo = getUserInfoLU(userId); 969 if (!userInfo.canHaveProfile()) { 970 return false; 971 } 972 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 973 - profilesRemovedCount; 974 // We allow creating a managed profile in the special case where there is only one user. 975 return usersCountAfterRemoving == 1 976 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 977 } 978 } 979 980 private int getAliveUsersExcludingGuestsCountLU() { 981 int aliveUserCount = 0; 982 final int totalUserCount = mUsers.size(); 983 // Skip over users being removed 984 for (int i = 0; i < totalUserCount; i++) { 985 UserInfo user = mUsers.valueAt(i); 986 if (!mRemovingUserIds.get(user.id) 987 && !user.isGuest() && !user.partial) { 988 aliveUserCount++; 989 } 990 } 991 return aliveUserCount; 992 } 993 994 /** 995 * Enforces that only the system UID or root's UID or apps that have the 996 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 997 * permission can make certain calls to the UserManager. 998 * 999 * @param message used as message if SecurityException is thrown 1000 * @throws SecurityException if the caller is not system or root 1001 */ 1002 private static final void checkManageUsersPermission(String message) { 1003 final int uid = Binder.getCallingUid(); 1004 if (uid != Process.SYSTEM_UID && uid != 0 1005 && ActivityManager.checkComponentPermission( 1006 android.Manifest.permission.MANAGE_USERS, 1007 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1008 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1009 } 1010 } 1011 1012 private static void checkSystemOrRoot(String message) { 1013 final int uid = Binder.getCallingUid(); 1014 if (uid != Process.SYSTEM_UID && uid != 0) { 1015 throw new SecurityException("Only system may call: " + message); 1016 } 1017 } 1018 1019 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1020 try { 1021 File dir = new File(mUsersDir, Integer.toString(info.id)); 1022 File file = new File(dir, USER_PHOTO_FILENAME); 1023 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1024 if (!dir.exists()) { 1025 dir.mkdir(); 1026 FileUtils.setPermissions( 1027 dir.getPath(), 1028 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1029 -1, -1); 1030 } 1031 FileOutputStream os; 1032 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1033 && tmp.renameTo(file)) { 1034 info.iconPath = file.getAbsolutePath(); 1035 } 1036 try { 1037 os.close(); 1038 } catch (IOException ioe) { 1039 // What the ... ! 1040 } 1041 tmp.delete(); 1042 } catch (FileNotFoundException e) { 1043 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1044 } 1045 } 1046 1047 /** 1048 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1049 * cache it elsewhere. 1050 * @return the array of user ids. 1051 */ 1052 public int[] getUserIds() { 1053 synchronized (mUsersLock) { 1054 return mUserIds; 1055 } 1056 } 1057 1058 private void readUserListLP() { 1059 if (!mUserListFile.exists()) { 1060 fallbackToSingleUserLP(); 1061 return; 1062 } 1063 FileInputStream fis = null; 1064 AtomicFile userListFile = new AtomicFile(mUserListFile); 1065 try { 1066 fis = userListFile.openRead(); 1067 XmlPullParser parser = Xml.newPullParser(); 1068 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1069 int type; 1070 while ((type = parser.next()) != XmlPullParser.START_TAG 1071 && type != XmlPullParser.END_DOCUMENT) { 1072 ; 1073 } 1074 1075 if (type != XmlPullParser.START_TAG) { 1076 Slog.e(LOG_TAG, "Unable to read user list"); 1077 fallbackToSingleUserLP(); 1078 return; 1079 } 1080 1081 mNextSerialNumber = -1; 1082 if (parser.getName().equals(TAG_USERS)) { 1083 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1084 if (lastSerialNumber != null) { 1085 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1086 } 1087 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1088 if (versionNumber != null) { 1089 mUserVersion = Integer.parseInt(versionNumber); 1090 } 1091 } 1092 1093 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1094 1095 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1096 if (type == XmlPullParser.START_TAG) { 1097 final String name = parser.getName(); 1098 if (name.equals(TAG_USER)) { 1099 String id = parser.getAttributeValue(null, ATTR_ID); 1100 UserInfo user = readUserLP(Integer.parseInt(id)); 1101 1102 if (user != null) { 1103 synchronized (mUsersLock) { 1104 mUsers.put(user.id, user); 1105 if (mNextSerialNumber < 0 || mNextSerialNumber <= user.id) { 1106 mNextSerialNumber = user.id + 1; 1107 } 1108 } 1109 } 1110 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1111 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1112 && type != XmlPullParser.END_TAG) { 1113 if (type == XmlPullParser.START_TAG) { 1114 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1115 synchronized (mGuestRestrictions) { 1116 UserRestrictionsUtils 1117 .readRestrictions(parser, mGuestRestrictions); 1118 } 1119 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1120 ) { 1121 UserRestrictionsUtils.readRestrictions(parser, 1122 newDevicePolicyGlobalUserRestrictions); 1123 } 1124 break; 1125 } 1126 } 1127 } 1128 } 1129 } 1130 synchronized (mRestrictionsLock) { 1131 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1132 } 1133 updateUserIds(); 1134 upgradeIfNecessaryLP(); 1135 } catch (IOException | XmlPullParserException e) { 1136 fallbackToSingleUserLP(); 1137 } finally { 1138 IoUtils.closeQuietly(fis); 1139 } 1140 } 1141 1142 /** 1143 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1144 */ 1145 private void upgradeIfNecessaryLP() { 1146 final int originalVersion = mUserVersion; 1147 int userVersion = mUserVersion; 1148 if (userVersion < 1) { 1149 // Assign a proper name for the owner, if not initialized correctly before 1150 UserInfo user = getUserInfoNoChecks(UserHandle.USER_SYSTEM); 1151 if ("Primary".equals(user.name)) { 1152 user.name = mContext.getResources().getString(com.android.internal.R.string.owner_name); 1153 scheduleWriteUser(user); 1154 } 1155 userVersion = 1; 1156 } 1157 1158 if (userVersion < 2) { 1159 // Owner should be marked as initialized 1160 UserInfo user = getUserInfoNoChecks(UserHandle.USER_SYSTEM); 1161 if ((user.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1162 user.flags |= UserInfo.FLAG_INITIALIZED; 1163 scheduleWriteUser(user); 1164 } 1165 userVersion = 2; 1166 } 1167 1168 1169 if (userVersion < 4) { 1170 userVersion = 4; 1171 } 1172 1173 if (userVersion < 5) { 1174 initDefaultGuestRestrictions(); 1175 userVersion = 5; 1176 } 1177 1178 if (userVersion < 6) { 1179 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1180 synchronized (mUsersLock) { 1181 for (int i = 0; i < mUsers.size(); i++) { 1182 UserInfo user = mUsers.valueAt(i); 1183 // In non-split mode, only user 0 can have restricted profiles 1184 if (!splitSystemUser && user.isRestricted() 1185 && (user.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID)) { 1186 user.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1187 scheduleWriteUser(user); 1188 } 1189 } 1190 } 1191 userVersion = 6; 1192 } 1193 1194 if (userVersion < USER_VERSION) { 1195 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1196 + USER_VERSION); 1197 } else { 1198 mUserVersion = userVersion; 1199 1200 if (originalVersion < mUserVersion) { 1201 writeUserListLP(); 1202 } 1203 } 1204 } 1205 1206 private void fallbackToSingleUserLP() { 1207 int flags = UserInfo.FLAG_INITIALIZED; 1208 // In split system user mode, the admin and primary flags are assigned to the first human 1209 // user. 1210 if (!UserManager.isSplitSystemUser()) { 1211 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1212 } 1213 // Create the system user 1214 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, 1215 mContext.getResources().getString(com.android.internal.R.string.owner_name), null, 1216 flags); 1217 synchronized (mUsersLock) { 1218 mUsers.put(system.id, system); 1219 } 1220 mNextSerialNumber = MIN_USER_ID; 1221 mUserVersion = USER_VERSION; 1222 1223 Bundle restrictions = new Bundle(); 1224 synchronized (mRestrictionsLock) { 1225 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1226 } 1227 1228 updateUserIds(); 1229 initDefaultGuestRestrictions(); 1230 1231 writeUserListLP(); 1232 writeUserLP(system); 1233 } 1234 1235 private void scheduleWriteUser(UserInfo userInfo) { 1236 if (DBG) { 1237 debug("scheduleWriteUser"); 1238 } 1239 // No need to wrap it within a lock -- worst case, we'll just post the same message 1240 // twice. 1241 if (!mHandler.hasMessages(WRITE_USER_MSG, userInfo)) { 1242 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, userInfo); 1243 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1244 } 1245 } 1246 1247 /* 1248 * Writes the user file in this format: 1249 * 1250 * <user flags="20039023" id="0"> 1251 * <name>Primary</name> 1252 * </user> 1253 */ 1254 private void writeUserLP(UserInfo userInfo) { 1255 if (DBG) { 1256 debug("writeUserLP " + userInfo); 1257 } 1258 FileOutputStream fos = null; 1259 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userInfo.id + XML_SUFFIX)); 1260 try { 1261 fos = userFile.startWrite(); 1262 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1263 1264 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1265 final XmlSerializer serializer = new FastXmlSerializer(); 1266 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1267 serializer.startDocument(null, true); 1268 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1269 1270 serializer.startTag(null, TAG_USER); 1271 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1272 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1273 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1274 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1275 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1276 Long.toString(userInfo.lastLoggedInTime)); 1277 if (userInfo.iconPath != null) { 1278 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1279 } 1280 if (userInfo.partial) { 1281 serializer.attribute(null, ATTR_PARTIAL, "true"); 1282 } 1283 if (userInfo.guestToRemove) { 1284 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1285 } 1286 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1287 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1288 Integer.toString(userInfo.profileGroupId)); 1289 } 1290 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1291 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1292 Integer.toString(userInfo.restrictedProfileParentId)); 1293 } 1294 serializer.startTag(null, TAG_NAME); 1295 serializer.text(userInfo.name); 1296 serializer.endTag(null, TAG_NAME); 1297 synchronized (mRestrictionsLock) { 1298 UserRestrictionsUtils.writeRestrictions(serializer, 1299 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1300 UserRestrictionsUtils.writeRestrictions(serializer, 1301 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1302 TAG_DEVICE_POLICY_RESTRICTIONS); 1303 } 1304 serializer.endTag(null, TAG_USER); 1305 1306 serializer.endDocument(); 1307 userFile.finishWrite(fos); 1308 } catch (Exception ioe) { 1309 Slog.e(LOG_TAG, "Error writing user info " + userInfo.id + "\n" + ioe); 1310 userFile.failWrite(fos); 1311 } 1312 } 1313 1314 /* 1315 * Writes the user list file in this format: 1316 * 1317 * <users nextSerialNumber="3"> 1318 * <user id="0"></user> 1319 * <user id="2"></user> 1320 * </users> 1321 */ 1322 private void writeUserListLP() { 1323 if (DBG) { 1324 debug("writeUserList"); 1325 } 1326 FileOutputStream fos = null; 1327 AtomicFile userListFile = new AtomicFile(mUserListFile); 1328 try { 1329 fos = userListFile.startWrite(); 1330 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1331 1332 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1333 final XmlSerializer serializer = new FastXmlSerializer(); 1334 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1335 serializer.startDocument(null, true); 1336 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1337 1338 serializer.startTag(null, TAG_USERS); 1339 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1340 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1341 1342 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1343 synchronized (mGuestRestrictions) { 1344 UserRestrictionsUtils 1345 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1346 } 1347 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1348 synchronized (mRestrictionsLock) { 1349 UserRestrictionsUtils.writeRestrictions(serializer, 1350 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1351 } 1352 int[] userIdsToWrite; 1353 synchronized (mUsersLock) { 1354 userIdsToWrite = new int[mUsers.size()]; 1355 for (int i = 0; i < userIdsToWrite.length; i++) { 1356 UserInfo user = mUsers.valueAt(i); 1357 userIdsToWrite[i] = user.id; 1358 } 1359 } 1360 for (int id : userIdsToWrite) { 1361 serializer.startTag(null, TAG_USER); 1362 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1363 serializer.endTag(null, TAG_USER); 1364 } 1365 1366 serializer.endTag(null, TAG_USERS); 1367 1368 serializer.endDocument(); 1369 userListFile.finishWrite(fos); 1370 } catch (Exception e) { 1371 userListFile.failWrite(fos); 1372 Slog.e(LOG_TAG, "Error writing user list"); 1373 } 1374 } 1375 1376 private UserInfo readUserLP(int id) { 1377 int flags = 0; 1378 int serialNumber = id; 1379 String name = null; 1380 String iconPath = null; 1381 long creationTime = 0L; 1382 long lastLoggedInTime = 0L; 1383 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 1384 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 1385 boolean partial = false; 1386 boolean guestToRemove = false; 1387 Bundle baseRestrictions = new Bundle(); 1388 Bundle localRestrictions = new Bundle(); 1389 1390 FileInputStream fis = null; 1391 try { 1392 AtomicFile userFile = 1393 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 1394 fis = userFile.openRead(); 1395 XmlPullParser parser = Xml.newPullParser(); 1396 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1397 int type; 1398 while ((type = parser.next()) != XmlPullParser.START_TAG 1399 && type != XmlPullParser.END_DOCUMENT) { 1400 ; 1401 } 1402 1403 if (type != XmlPullParser.START_TAG) { 1404 Slog.e(LOG_TAG, "Unable to read user " + id); 1405 return null; 1406 } 1407 1408 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 1409 int storedId = readIntAttribute(parser, ATTR_ID, -1); 1410 if (storedId != id) { 1411 Slog.e(LOG_TAG, "User id does not match the file name"); 1412 return null; 1413 } 1414 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 1415 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 1416 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 1417 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 1418 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 1419 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 1420 UserInfo.NO_PROFILE_GROUP_ID); 1421 restrictedProfileParentId = readIntAttribute(parser, 1422 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 1423 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 1424 if ("true".equals(valueString)) { 1425 partial = true; 1426 } 1427 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 1428 if ("true".equals(valueString)) { 1429 guestToRemove = true; 1430 } 1431 1432 int outerDepth = parser.getDepth(); 1433 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1434 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1435 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1436 continue; 1437 } 1438 String tag = parser.getName(); 1439 if (TAG_NAME.equals(tag)) { 1440 type = parser.next(); 1441 if (type == XmlPullParser.TEXT) { 1442 name = parser.getText(); 1443 } 1444 } else if (TAG_RESTRICTIONS.equals(tag)) { 1445 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 1446 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 1447 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 1448 } 1449 } 1450 } 1451 1452 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 1453 userInfo.serialNumber = serialNumber; 1454 userInfo.creationTime = creationTime; 1455 userInfo.lastLoggedInTime = lastLoggedInTime; 1456 userInfo.partial = partial; 1457 userInfo.guestToRemove = guestToRemove; 1458 userInfo.profileGroupId = profileGroupId; 1459 userInfo.restrictedProfileParentId = restrictedProfileParentId; 1460 synchronized (mRestrictionsLock) { 1461 mBaseUserRestrictions.put(id, baseRestrictions); 1462 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 1463 } 1464 return userInfo; 1465 1466 } catch (IOException ioe) { 1467 } catch (XmlPullParserException pe) { 1468 } finally { 1469 if (fis != null) { 1470 try { 1471 fis.close(); 1472 } catch (IOException e) { 1473 } 1474 } 1475 } 1476 return null; 1477 } 1478 1479 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1480 String valueString = parser.getAttributeValue(null, attr); 1481 if (valueString == null) return defaultValue; 1482 try { 1483 return Integer.parseInt(valueString); 1484 } catch (NumberFormatException nfe) { 1485 return defaultValue; 1486 } 1487 } 1488 1489 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1490 String valueString = parser.getAttributeValue(null, attr); 1491 if (valueString == null) return defaultValue; 1492 try { 1493 return Long.parseLong(valueString); 1494 } catch (NumberFormatException nfe) { 1495 return defaultValue; 1496 } 1497 } 1498 1499 private boolean isPackageInstalled(String pkg, int userId) { 1500 final ApplicationInfo info = mPm.getApplicationInfo(pkg, 1501 PackageManager.GET_UNINSTALLED_PACKAGES, 1502 userId); 1503 if (info == null || (info.flags&ApplicationInfo.FLAG_INSTALLED) == 0) { 1504 return false; 1505 } 1506 return true; 1507 } 1508 1509 /** 1510 * Removes all the restrictions files (res_<packagename>) for a given user. 1511 * Does not do any permissions checking. 1512 */ 1513 private void cleanAppRestrictions(int userId) { 1514 synchronized (mPackagesLock) { 1515 File dir = Environment.getUserSystemDirectory(userId); 1516 String[] files = dir.list(); 1517 if (files == null) return; 1518 for (String fileName : files) { 1519 if (fileName.startsWith(RESTRICTIONS_FILE_PREFIX)) { 1520 File resFile = new File(dir, fileName); 1521 if (resFile.exists()) { 1522 resFile.delete(); 1523 } 1524 } 1525 } 1526 } 1527 } 1528 1529 /** 1530 * Removes the app restrictions file for a specific package and user id, if it exists. 1531 */ 1532 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1533 synchronized (mPackagesLock) { 1534 File dir = Environment.getUserSystemDirectory(userId); 1535 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1536 if (resFile.exists()) { 1537 resFile.delete(); 1538 } 1539 } 1540 } 1541 1542 @Override 1543 public UserInfo createProfileForUser(String name, int flags, int userId) { 1544 checkManageUsersPermission("Only the system can create users"); 1545 return createUserInternal(name, flags, userId); 1546 } 1547 1548 @Override 1549 public UserInfo createUser(String name, int flags) { 1550 checkManageUsersPermission("Only the system can create users"); 1551 return createUserInternal(name, flags, UserHandle.USER_NULL); 1552 } 1553 1554 private UserInfo createUserInternal(String name, int flags, int parentId) { 1555 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 1556 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1557 return null; 1558 } 1559 if (ActivityManager.isLowRamDeviceStatic()) { 1560 return null; 1561 } 1562 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1563 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 1564 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 1565 final long ident = Binder.clearCallingIdentity(); 1566 UserInfo userInfo; 1567 final int userId; 1568 try { 1569 synchronized (mPackagesLock) { 1570 UserInfo parent = null; 1571 if (parentId != UserHandle.USER_NULL) { 1572 synchronized (mUsersLock) { 1573 parent = getUserInfoLU(parentId); 1574 } 1575 if (parent == null) return null; 1576 } 1577 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 1578 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 1579 return null; 1580 } 1581 if (!isGuest && !isManagedProfile && isUserLimitReached()) { 1582 // If we're not adding a guest user or a managed profile and the limit has 1583 // been reached, cannot add a user. 1584 return null; 1585 } 1586 // If we're adding a guest and there already exists one, bail. 1587 if (isGuest && findCurrentGuestUser() != null) { 1588 return null; 1589 } 1590 // In legacy mode, restricted profile's parent can only be the owner user 1591 if (isRestricted && !UserManager.isSplitSystemUser() 1592 && (parentId != UserHandle.USER_SYSTEM)) { 1593 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 1594 return null; 1595 } 1596 if (isRestricted && UserManager.isSplitSystemUser()) { 1597 if (parent == null) { 1598 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 1599 + "specified"); 1600 return null; 1601 } 1602 if (!parent.canHaveProfile()) { 1603 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 1604 + "created for the specified parent user id " + parentId); 1605 return null; 1606 } 1607 } 1608 // In split system user mode, we assign the first human user the primary flag. 1609 // And if there is no device owner, we also assign the admin flag to primary user. 1610 if (UserManager.isSplitSystemUser() 1611 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 1612 flags |= UserInfo.FLAG_PRIMARY; 1613 synchronized (mUsersLock) { 1614 if (!mIsDeviceManaged) { 1615 flags |= UserInfo.FLAG_ADMIN; 1616 } 1617 } 1618 } 1619 userId = getNextAvailableId(); 1620 userInfo = new UserInfo(userId, name, null, flags); 1621 userInfo.serialNumber = mNextSerialNumber++; 1622 long now = System.currentTimeMillis(); 1623 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1624 userInfo.partial = true; 1625 Environment.getUserSystemDirectory(userInfo.id).mkdirs(); 1626 synchronized (mUsersLock) { 1627 mUsers.put(userId, userInfo); 1628 } 1629 writeUserListLP(); 1630 if (parent != null) { 1631 if (isManagedProfile) { 1632 if (parent.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1633 parent.profileGroupId = parent.id; 1634 writeUserLP(parent); 1635 } 1636 userInfo.profileGroupId = parent.profileGroupId; 1637 } else if (isRestricted) { 1638 if (parent.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 1639 parent.restrictedProfileParentId = parent.id; 1640 writeUserLP(parent); 1641 } 1642 userInfo.restrictedProfileParentId = parent.restrictedProfileParentId; 1643 } 1644 } 1645 } 1646 final StorageManager storage = mContext.getSystemService(StorageManager.class); 1647 storage.createUserKey(userId, userInfo.serialNumber); 1648 for (VolumeInfo vol : storage.getWritablePrivateVolumes()) { 1649 final String volumeUuid = vol.getFsUuid(); 1650 try { 1651 final File userDir = Environment.getDataUserDirectory(volumeUuid, userId); 1652 storage.prepareUserStorage(volumeUuid, userId, userInfo.serialNumber); 1653 enforceSerialNumber(userDir, userInfo.serialNumber); 1654 } catch (IOException e) { 1655 Log.wtf(LOG_TAG, "Failed to create user directory on " + volumeUuid, e); 1656 } 1657 } 1658 mPm.createNewUser(userId); 1659 userInfo.partial = false; 1660 synchronized (mPackagesLock) { 1661 writeUserLP(userInfo); 1662 } 1663 updateUserIds(); 1664 Bundle restrictions = new Bundle(); 1665 if (isGuest) { 1666 synchronized (mGuestRestrictions) { 1667 restrictions.putAll(mGuestRestrictions); 1668 } 1669 } 1670 synchronized (mRestrictionsLock) { 1671 mBaseUserRestrictions.append(userId, restrictions); 1672 } 1673 mPm.newUserCreated(userId); 1674 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 1675 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 1676 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 1677 android.Manifest.permission.MANAGE_USERS); 1678 } finally { 1679 Binder.restoreCallingIdentity(ident); 1680 } 1681 return userInfo; 1682 } 1683 1684 /** 1685 * @hide 1686 */ 1687 public UserInfo createRestrictedProfile(String name, int parentUserId) { 1688 checkManageUsersPermission("setupRestrictedProfile"); 1689 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 1690 if (user == null) { 1691 return null; 1692 } 1693 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 1694 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 1695 // the putIntForUser() will fail. 1696 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 1697 android.provider.Settings.Secure.LOCATION_MODE, 1698 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 1699 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 1700 return user; 1701 } 1702 1703 /** 1704 * Find the current guest user. If the Guest user is partial, 1705 * then do not include it in the results as it is about to die. 1706 */ 1707 private UserInfo findCurrentGuestUser() { 1708 synchronized (mUsersLock) { 1709 final int size = mUsers.size(); 1710 for (int i = 0; i < size; i++) { 1711 final UserInfo user = mUsers.valueAt(i); 1712 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 1713 return user; 1714 } 1715 } 1716 } 1717 return null; 1718 } 1719 1720 /** 1721 * Mark this guest user for deletion to allow us to create another guest 1722 * and switch to that user before actually removing this guest. 1723 * @param userHandle the userid of the current guest 1724 * @return whether the user could be marked for deletion 1725 */ 1726 public boolean markGuestForDeletion(int userHandle) { 1727 checkManageUsersPermission("Only the system can remove users"); 1728 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1729 UserManager.DISALLOW_REMOVE_USER, false)) { 1730 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1731 return false; 1732 } 1733 1734 long ident = Binder.clearCallingIdentity(); 1735 try { 1736 final UserInfo user; 1737 synchronized (mPackagesLock) { 1738 synchronized (mUsersLock) { 1739 user = mUsers.get(userHandle); 1740 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1741 return false; 1742 } 1743 } 1744 if (!user.isGuest()) { 1745 return false; 1746 } 1747 // We set this to a guest user that is to be removed. This is a temporary state 1748 // where we are allowed to add new Guest users, even if this one is still not 1749 // removed. This user will still show up in getUserInfo() calls. 1750 // If we don't get around to removing this Guest user, it will be purged on next 1751 // startup. 1752 user.guestToRemove = true; 1753 // Mark it as disabled, so that it isn't returned any more when 1754 // profiles are queried. 1755 user.flags |= UserInfo.FLAG_DISABLED; 1756 writeUserLP(user); 1757 } 1758 } finally { 1759 Binder.restoreCallingIdentity(ident); 1760 } 1761 return true; 1762 } 1763 1764 /** 1765 * Removes a user and all data directories created for that user. This method should be called 1766 * after the user's processes have been terminated. 1767 * @param userHandle the user's id 1768 */ 1769 public boolean removeUser(int userHandle) { 1770 checkManageUsersPermission("Only the system can remove users"); 1771 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1772 UserManager.DISALLOW_REMOVE_USER, false)) { 1773 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1774 return false; 1775 } 1776 1777 long ident = Binder.clearCallingIdentity(); 1778 try { 1779 final UserInfo user; 1780 int currentUser = ActivityManager.getCurrentUser(); 1781 if (currentUser == userHandle) { 1782 Log.w(LOG_TAG, "Current user cannot be removed"); 1783 return false; 1784 } 1785 synchronized (mPackagesLock) { 1786 synchronized (mUsersLock) { 1787 user = mUsers.get(userHandle); 1788 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1789 return false; 1790 } 1791 1792 // We remember deleted user IDs to prevent them from being 1793 // reused during the current boot; they can still be reused 1794 // after a reboot. 1795 mRemovingUserIds.put(userHandle, true); 1796 } 1797 1798 try { 1799 mAppOpsService.removeUser(userHandle); 1800 } catch (RemoteException e) { 1801 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 1802 } 1803 // Set this to a partially created user, so that the user will be purged 1804 // on next startup, in case the runtime stops now before stopping and 1805 // removing the user completely. 1806 user.partial = true; 1807 // Mark it as disabled, so that it isn't returned any more when 1808 // profiles are queried. 1809 user.flags |= UserInfo.FLAG_DISABLED; 1810 writeUserLP(user); 1811 } 1812 1813 if (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 1814 && user.isManagedProfile()) { 1815 // Send broadcast to notify system that the user removed was a 1816 // managed user. 1817 sendProfileRemovedBroadcast(user.profileGroupId, user.id); 1818 } 1819 1820 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 1821 int res; 1822 try { 1823 res = ActivityManagerNative.getDefault().stopUser(userHandle, 1824 new IStopUserCallback.Stub() { 1825 @Override 1826 public void userStopped(int userId) { 1827 finishRemoveUser(userId); 1828 } 1829 @Override 1830 public void userStopAborted(int userId) { 1831 } 1832 }); 1833 } catch (RemoteException e) { 1834 return false; 1835 } 1836 return res == ActivityManager.USER_OP_SUCCESS; 1837 } finally { 1838 Binder.restoreCallingIdentity(ident); 1839 } 1840 } 1841 1842 void finishRemoveUser(final int userHandle) { 1843 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 1844 // Let other services shutdown any activity and clean up their state before completely 1845 // wiping the user's system directory and removing from the user list 1846 long ident = Binder.clearCallingIdentity(); 1847 try { 1848 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 1849 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 1850 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 1851 android.Manifest.permission.MANAGE_USERS, 1852 1853 new BroadcastReceiver() { 1854 @Override 1855 public void onReceive(Context context, Intent intent) { 1856 if (DBG) { 1857 Slog.i(LOG_TAG, 1858 "USER_REMOVED broadcast sent, cleaning up user data " 1859 + userHandle); 1860 } 1861 new Thread() { 1862 public void run() { 1863 // Clean up any ActivityManager state 1864 LocalServices.getService(ActivityManagerInternal.class) 1865 .onUserRemoved(userHandle); 1866 removeUserState(userHandle); 1867 } 1868 }.start(); 1869 } 1870 }, 1871 1872 null, Activity.RESULT_OK, null, null); 1873 } finally { 1874 Binder.restoreCallingIdentity(ident); 1875 } 1876 } 1877 1878 private void removeUserState(final int userHandle) { 1879 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 1880 // Cleanup package manager settings 1881 mPm.cleanUpUser(this, userHandle); 1882 1883 // Remove this user from the list 1884 synchronized (mUsersLock) { 1885 mUsers.remove(userHandle); 1886 mIsUserManaged.delete(userHandle); 1887 } 1888 synchronized (mRestrictionsLock) { 1889 mBaseUserRestrictions.remove(userHandle); 1890 mAppliedUserRestrictions.remove(userHandle); 1891 mCachedEffectiveUserRestrictions.remove(userHandle); 1892 mDevicePolicyLocalUserRestrictions.remove(userHandle); 1893 } 1894 // Remove user file 1895 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 1896 userFile.delete(); 1897 // Update the user list 1898 synchronized (mPackagesLock) { 1899 writeUserListLP(); 1900 } 1901 updateUserIds(); 1902 removeDirectoryRecursive(Environment.getUserSystemDirectory(userHandle)); 1903 } 1904 1905 private void removeDirectoryRecursive(File parent) { 1906 if (parent.isDirectory()) { 1907 String[] files = parent.list(); 1908 for (String filename : files) { 1909 File child = new File(parent, filename); 1910 removeDirectoryRecursive(child); 1911 } 1912 } 1913 parent.delete(); 1914 } 1915 1916 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 1917 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 1918 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 1919 Intent.FLAG_RECEIVER_FOREGROUND); 1920 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 1921 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 1922 } 1923 1924 @Override 1925 public Bundle getApplicationRestrictions(String packageName) { 1926 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 1927 } 1928 1929 @Override 1930 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 1931 if (UserHandle.getCallingUserId() != userId 1932 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 1933 checkManageUsersPermission("get application restrictions for other users/apps"); 1934 } 1935 synchronized (mPackagesLock) { 1936 // Read the restrictions from XML 1937 return readApplicationRestrictionsLP(packageName, userId); 1938 } 1939 } 1940 1941 @Override 1942 public void setApplicationRestrictions(String packageName, Bundle restrictions, 1943 int userId) { 1944 checkManageUsersPermission("set application restrictions"); 1945 synchronized (mPackagesLock) { 1946 if (restrictions == null || restrictions.isEmpty()) { 1947 cleanAppRestrictionsForPackage(packageName, userId); 1948 } else { 1949 // Write the restrictions to XML 1950 writeApplicationRestrictionsLP(packageName, restrictions, userId); 1951 } 1952 } 1953 1954 if (isPackageInstalled(packageName, userId)) { 1955 // Notify package of changes via an intent - only sent to explicitly registered receivers. 1956 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 1957 changeIntent.setPackage(packageName); 1958 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1959 mContext.sendBroadcastAsUser(changeIntent, new UserHandle(userId)); 1960 } 1961 } 1962 1963 private void unhideAllInstalledAppsForUser(final int userHandle) { 1964 mHandler.post(new Runnable() { 1965 @Override 1966 public void run() { 1967 List<ApplicationInfo> apps = 1968 mPm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES, 1969 userHandle).getList(); 1970 final long ident = Binder.clearCallingIdentity(); 1971 try { 1972 for (ApplicationInfo appInfo : apps) { 1973 if ((appInfo.flags & ApplicationInfo.FLAG_INSTALLED) != 0 1974 && (appInfo.privateFlags & ApplicationInfo.PRIVATE_FLAG_HIDDEN) 1975 != 0) { 1976 mPm.setApplicationHiddenSettingAsUser(appInfo.packageName, false, 1977 userHandle); 1978 } 1979 } 1980 } finally { 1981 Binder.restoreCallingIdentity(ident); 1982 } 1983 } 1984 }); 1985 } 1986 private int getUidForPackage(String packageName) { 1987 long ident = Binder.clearCallingIdentity(); 1988 try { 1989 return mContext.getPackageManager().getApplicationInfo(packageName, 1990 PackageManager.GET_UNINSTALLED_PACKAGES).uid; 1991 } catch (NameNotFoundException nnfe) { 1992 return -1; 1993 } finally { 1994 Binder.restoreCallingIdentity(ident); 1995 } 1996 } 1997 1998 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 1999 AtomicFile restrictionsFile = 2000 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2001 packageToRestrictionsFileName(packageName))); 2002 return readApplicationRestrictionsLP(restrictionsFile); 2003 } 2004 2005 @VisibleForTesting 2006 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2007 final Bundle restrictions = new Bundle(); 2008 final ArrayList<String> values = new ArrayList<>(); 2009 if (!restrictionsFile.getBaseFile().exists()) { 2010 return restrictions; 2011 } 2012 2013 FileInputStream fis = null; 2014 try { 2015 fis = restrictionsFile.openRead(); 2016 XmlPullParser parser = Xml.newPullParser(); 2017 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2018 XmlUtils.nextElement(parser); 2019 if (parser.getEventType() != XmlPullParser.START_TAG) { 2020 Slog.e(LOG_TAG, "Unable to read restrictions file " 2021 + restrictionsFile.getBaseFile()); 2022 return restrictions; 2023 } 2024 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2025 readEntry(restrictions, values, parser); 2026 } 2027 } catch (IOException|XmlPullParserException e) { 2028 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2029 } finally { 2030 IoUtils.closeQuietly(fis); 2031 } 2032 return restrictions; 2033 } 2034 2035 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2036 XmlPullParser parser) throws XmlPullParserException, IOException { 2037 int type = parser.getEventType(); 2038 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2039 String key = parser.getAttributeValue(null, ATTR_KEY); 2040 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2041 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2042 if (multiple != null) { 2043 values.clear(); 2044 int count = Integer.parseInt(multiple); 2045 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2046 if (type == XmlPullParser.START_TAG 2047 && parser.getName().equals(TAG_VALUE)) { 2048 values.add(parser.nextText().trim()); 2049 count--; 2050 } 2051 } 2052 String [] valueStrings = new String[values.size()]; 2053 values.toArray(valueStrings); 2054 restrictions.putStringArray(key, valueStrings); 2055 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2056 restrictions.putBundle(key, readBundleEntry(parser, values)); 2057 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2058 final int outerDepth = parser.getDepth(); 2059 ArrayList<Bundle> bundleList = new ArrayList<>(); 2060 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2061 Bundle childBundle = readBundleEntry(parser, values); 2062 bundleList.add(childBundle); 2063 } 2064 restrictions.putParcelableArray(key, 2065 bundleList.toArray(new Bundle[bundleList.size()])); 2066 } else { 2067 String value = parser.nextText().trim(); 2068 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2069 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2070 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2071 restrictions.putInt(key, Integer.parseInt(value)); 2072 } else { 2073 restrictions.putString(key, value); 2074 } 2075 } 2076 } 2077 } 2078 2079 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2080 throws IOException, XmlPullParserException { 2081 Bundle childBundle = new Bundle(); 2082 final int outerDepth = parser.getDepth(); 2083 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2084 readEntry(childBundle, values, parser); 2085 } 2086 return childBundle; 2087 } 2088 2089 private void writeApplicationRestrictionsLP(String packageName, 2090 Bundle restrictions, int userId) { 2091 AtomicFile restrictionsFile = new AtomicFile( 2092 new File(Environment.getUserSystemDirectory(userId), 2093 packageToRestrictionsFileName(packageName))); 2094 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2095 } 2096 2097 @VisibleForTesting 2098 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2099 FileOutputStream fos = null; 2100 try { 2101 fos = restrictionsFile.startWrite(); 2102 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2103 2104 final XmlSerializer serializer = new FastXmlSerializer(); 2105 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2106 serializer.startDocument(null, true); 2107 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2108 2109 serializer.startTag(null, TAG_RESTRICTIONS); 2110 writeBundle(restrictions, serializer); 2111 serializer.endTag(null, TAG_RESTRICTIONS); 2112 2113 serializer.endDocument(); 2114 restrictionsFile.finishWrite(fos); 2115 } catch (Exception e) { 2116 restrictionsFile.failWrite(fos); 2117 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2118 } 2119 } 2120 2121 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2122 throws IOException { 2123 for (String key : restrictions.keySet()) { 2124 Object value = restrictions.get(key); 2125 serializer.startTag(null, TAG_ENTRY); 2126 serializer.attribute(null, ATTR_KEY, key); 2127 2128 if (value instanceof Boolean) { 2129 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2130 serializer.text(value.toString()); 2131 } else if (value instanceof Integer) { 2132 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2133 serializer.text(value.toString()); 2134 } else if (value == null || value instanceof String) { 2135 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2136 serializer.text(value != null ? (String) value : ""); 2137 } else if (value instanceof Bundle) { 2138 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2139 writeBundle((Bundle) value, serializer); 2140 } else if (value instanceof Parcelable[]) { 2141 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2142 Parcelable[] array = (Parcelable[]) value; 2143 for (Parcelable parcelable : array) { 2144 if (!(parcelable instanceof Bundle)) { 2145 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2146 } 2147 serializer.startTag(null, TAG_ENTRY); 2148 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2149 writeBundle((Bundle) parcelable, serializer); 2150 serializer.endTag(null, TAG_ENTRY); 2151 } 2152 } else { 2153 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2154 String[] values = (String[]) value; 2155 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2156 for (String choice : values) { 2157 serializer.startTag(null, TAG_VALUE); 2158 serializer.text(choice != null ? choice : ""); 2159 serializer.endTag(null, TAG_VALUE); 2160 } 2161 } 2162 serializer.endTag(null, TAG_ENTRY); 2163 } 2164 } 2165 2166 @Override 2167 public int getUserSerialNumber(int userHandle) { 2168 synchronized (mUsersLock) { 2169 if (!exists(userHandle)) return -1; 2170 return getUserInfoLU(userHandle).serialNumber; 2171 } 2172 } 2173 2174 @Override 2175 public int getUserHandle(int userSerialNumber) { 2176 synchronized (mUsersLock) { 2177 for (int userId : mUserIds) { 2178 UserInfo info = getUserInfoLU(userId); 2179 if (info != null && info.serialNumber == userSerialNumber) return userId; 2180 } 2181 // Not found 2182 return -1; 2183 } 2184 } 2185 2186 @Override 2187 public long getUserCreationTime(int userHandle) { 2188 int callingUserId = UserHandle.getCallingUserId(); 2189 UserInfo userInfo = null; 2190 synchronized (mUsersLock) { 2191 if (callingUserId == userHandle) { 2192 userInfo = getUserInfoLU(userHandle); 2193 } else { 2194 UserInfo parent = getProfileParentLU(userHandle); 2195 if (parent != null && parent.id == callingUserId) { 2196 userInfo = getUserInfoLU(userHandle); 2197 } 2198 } 2199 } 2200 if (userInfo == null) { 2201 throw new SecurityException("userHandle can only be the calling user or a managed " 2202 + "profile associated with this user"); 2203 } 2204 return userInfo.creationTime; 2205 } 2206 2207 /** 2208 * Caches the list of user ids in an array, adjusting the array size when necessary. 2209 */ 2210 private void updateUserIds() { 2211 int num = 0; 2212 synchronized (mUsersLock) { 2213 final int userSize = mUsers.size(); 2214 for (int i = 0; i < userSize; i++) { 2215 if (!mUsers.valueAt(i).partial) { 2216 num++; 2217 } 2218 } 2219 final int[] newUsers = new int[num]; 2220 int n = 0; 2221 for (int i = 0; i < userSize; i++) { 2222 if (!mUsers.valueAt(i).partial) { 2223 newUsers[n++] = mUsers.keyAt(i); 2224 } 2225 } 2226 mUserIds = newUsers; 2227 } 2228 } 2229 2230 /** 2231 * Called right before a user starts. This will not be called for the system user. 2232 */ 2233 public void onBeforeStartUser(int userId) { 2234 synchronized (mRestrictionsLock) { 2235 applyUserRestrictionsLR(userId); 2236 } 2237 } 2238 2239 /** 2240 * Make a note of the last started time of a user and do some cleanup. 2241 * @param userId the user that was just foregrounded 2242 */ 2243 public void onUserForeground(int userId) { 2244 UserInfo user = getUserInfoNoChecks(userId); 2245 if (user == null || user.partial) { 2246 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2247 return; 2248 } 2249 long now = System.currentTimeMillis(); 2250 if (now > EPOCH_PLUS_30_YEARS) { 2251 user.lastLoggedInTime = now; 2252 scheduleWriteUser(user); 2253 } 2254 } 2255 2256 /** 2257 * Returns the next available user id, filling in any holes in the ids. 2258 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2259 * for data and battery stats collection, or unexpected cross-talk. 2260 */ 2261 private int getNextAvailableId() { 2262 synchronized (mUsersLock) { 2263 int i = MIN_USER_ID; 2264 while (i < MAX_USER_ID) { 2265 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2266 return i; 2267 } 2268 i++; 2269 } 2270 } 2271 throw new IllegalStateException("No user id available!"); 2272 } 2273 2274 private String packageToRestrictionsFileName(String packageName) { 2275 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2276 } 2277 2278 /** 2279 * Enforce that serial number stored in user directory inode matches the 2280 * given expected value. Gracefully sets the serial number if currently 2281 * undefined. 2282 * 2283 * @throws IOException when problem extracting serial number, or serial 2284 * number is mismatched. 2285 */ 2286 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2287 final int foundSerial = getSerialNumber(file); 2288 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 2289 2290 if (foundSerial == -1) { 2291 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 2292 try { 2293 setSerialNumber(file, serialNumber); 2294 } catch (IOException e) { 2295 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 2296 } 2297 2298 } else if (foundSerial != serialNumber) { 2299 throw new IOException("Found serial number " + foundSerial 2300 + " doesn't match expected " + serialNumber); 2301 } 2302 } 2303 2304 /** 2305 * Set serial number stored in user directory inode. 2306 * 2307 * @throws IOException if serial number was already set 2308 */ 2309 private static void setSerialNumber(File file, int serialNumber) 2310 throws IOException { 2311 try { 2312 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 2313 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 2314 } catch (ErrnoException e) { 2315 throw e.rethrowAsIOException(); 2316 } 2317 } 2318 2319 /** 2320 * Return serial number stored in user directory inode. 2321 * 2322 * @return parsed serial number, or -1 if not set 2323 */ 2324 private static int getSerialNumber(File file) throws IOException { 2325 try { 2326 final byte[] buf = new byte[256]; 2327 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 2328 final String serial = new String(buf, 0, len); 2329 try { 2330 return Integer.parseInt(serial); 2331 } catch (NumberFormatException e) { 2332 throw new IOException("Bad serial number: " + serial); 2333 } 2334 } catch (ErrnoException e) { 2335 if (e.errno == OsConstants.ENODATA) { 2336 return -1; 2337 } else { 2338 throw e.rethrowAsIOException(); 2339 } 2340 } 2341 } 2342 2343 @Override 2344 public void onShellCommand(FileDescriptor in, FileDescriptor out, 2345 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 2346 (new Shell()).exec(this, in, out, err, args, resultReceiver); 2347 } 2348 2349 int onShellCommand(Shell shell, String cmd) { 2350 if (cmd == null) { 2351 return shell.handleDefaultCommands(cmd); 2352 } 2353 2354 final PrintWriter pw = shell.getOutPrintWriter(); 2355 try { 2356 switch(cmd) { 2357 case "list": 2358 return runList(pw); 2359 } 2360 } catch (RemoteException e) { 2361 pw.println("Remote exception: " + e); 2362 } 2363 return -1; 2364 } 2365 2366 private int runList(PrintWriter pw) throws RemoteException { 2367 final IActivityManager am = ActivityManagerNative.getDefault(); 2368 final List<UserInfo> users = getUsers(false); 2369 if (users == null) { 2370 pw.println("Error: couldn't get users"); 2371 return 1; 2372 } else { 2373 pw.println("Users:"); 2374 for (int i = 0; i < users.size(); i++) { 2375 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 2376 pw.println("\t" + users.get(i).toString() + running); 2377 } 2378 return 0; 2379 } 2380 } 2381 2382 @Override 2383 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2384 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2385 != PackageManager.PERMISSION_GRANTED) { 2386 pw.println("Permission Denial: can't dump UserManager from from pid=" 2387 + Binder.getCallingPid() 2388 + ", uid=" + Binder.getCallingUid() 2389 + " without permission " 2390 + android.Manifest.permission.DUMP); 2391 return; 2392 } 2393 2394 long now = System.currentTimeMillis(); 2395 StringBuilder sb = new StringBuilder(); 2396 synchronized (mPackagesLock) { 2397 synchronized (mUsersLock) { 2398 pw.println("Users:"); 2399 for (int i = 0; i < mUsers.size(); i++) { 2400 UserInfo user = mUsers.valueAt(i); 2401 if (user == null) { 2402 continue; 2403 } 2404 final int userId = user.id; 2405 pw.print(" "); pw.print(user); 2406 pw.print(" serialNo="); pw.print(user.serialNumber); 2407 if (mRemovingUserIds.get(userId)) { 2408 pw.print(" <removing> "); 2409 } 2410 if (user.partial) { 2411 pw.print(" <partial>"); 2412 } 2413 pw.println(); 2414 pw.print(" Created: "); 2415 if (user.creationTime == 0) { 2416 pw.println("<unknown>"); 2417 } else { 2418 sb.setLength(0); 2419 TimeUtils.formatDuration(now - user.creationTime, sb); 2420 sb.append(" ago"); 2421 pw.println(sb); 2422 } 2423 pw.print(" Last logged in: "); 2424 if (user.lastLoggedInTime == 0) { 2425 pw.println("<unknown>"); 2426 } else { 2427 sb.setLength(0); 2428 TimeUtils.formatDuration(now - user.lastLoggedInTime, sb); 2429 sb.append(" ago"); 2430 pw.println(sb); 2431 } 2432 pw.print(" Has profile owner: "); 2433 pw.println(mIsUserManaged.get(userId)); 2434 pw.println(" Restrictions:"); 2435 synchronized (mRestrictionsLock) { 2436 UserRestrictionsUtils.dumpRestrictions( 2437 pw, " ", mBaseUserRestrictions.get(user.id)); 2438 pw.println(" Device policy local restrictions:"); 2439 UserRestrictionsUtils.dumpRestrictions( 2440 pw, " ", mDevicePolicyLocalUserRestrictions.get(user.id)); 2441 pw.println(" Effective restrictions:"); 2442 UserRestrictionsUtils.dumpRestrictions( 2443 pw, " ", mCachedEffectiveUserRestrictions.get(user.id)); 2444 } 2445 pw.println(); 2446 } 2447 } 2448 pw.println(" Device policy global restrictions:"); 2449 synchronized (mRestrictionsLock) { 2450 UserRestrictionsUtils 2451 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 2452 } 2453 pw.println(); 2454 pw.println(" Guest restrictions:"); 2455 synchronized (mGuestRestrictions) { 2456 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 2457 } 2458 synchronized (mUsersLock) { 2459 pw.println(); 2460 pw.println(" Device managed: " + mIsDeviceManaged); 2461 } 2462 } 2463 } 2464 2465 final class MainHandler extends Handler { 2466 2467 @Override 2468 public void handleMessage(Message msg) { 2469 switch (msg.what) { 2470 case WRITE_USER_MSG: 2471 removeMessages(WRITE_USER_MSG, msg.obj); 2472 synchronized (mPackagesLock) { 2473 int userId = ((UserInfo) msg.obj).id; 2474 UserInfo userInfo = getUserInfoNoChecks(userId); 2475 if (userInfo != null) { 2476 writeUserLP(userInfo); 2477 } 2478 } 2479 } 2480 } 2481 } 2482 2483 /** 2484 * @param userId 2485 * @return whether the user has been initialized yet 2486 */ 2487 boolean isInitialized(int userId) { 2488 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 2489 } 2490 2491 private class LocalService extends UserManagerInternal { 2492 @Override 2493 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 2494 @Nullable Bundle globalRestrictions) { 2495 UserManagerService.this.setDevicePolicyUserRestrictions(userId, localRestrictions, 2496 globalRestrictions); 2497 } 2498 2499 @Override 2500 public Bundle getBaseUserRestrictions(int userId) { 2501 synchronized (mRestrictionsLock) { 2502 return mBaseUserRestrictions.get(userId); 2503 } 2504 } 2505 2506 @Override 2507 public void setBaseUserRestrictionsByDpmsForMigration( 2508 int userId, Bundle baseRestrictions) { 2509 synchronized (mRestrictionsLock) { 2510 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 2511 invalidateEffectiveUserRestrictionsLR(userId); 2512 } 2513 2514 final UserInfo userInfo = getUserInfoNoChecks(userId); 2515 synchronized (mPackagesLock) { 2516 if (userInfo != null) { 2517 writeUserLP(userInfo); 2518 } else { 2519 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 2520 } 2521 } 2522 } 2523 2524 @Override 2525 public boolean getUserRestriction(int userId, String key) { 2526 return getUserRestrictions(userId).getBoolean(key); 2527 } 2528 2529 @Override 2530 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 2531 synchronized (mUserRestrictionsListeners) { 2532 mUserRestrictionsListeners.add(listener); 2533 } 2534 } 2535 2536 @Override 2537 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 2538 synchronized (mUserRestrictionsListeners) { 2539 mUserRestrictionsListeners.remove(listener); 2540 } 2541 } 2542 2543 @Override 2544 public void setDeviceManaged(boolean isManaged) { 2545 synchronized (mUsersLock) { 2546 mIsDeviceManaged = isManaged; 2547 } 2548 } 2549 2550 @Override 2551 public void setUserManaged(int userId, boolean isManaged) { 2552 synchronized (mUsersLock) { 2553 mIsUserManaged.put(userId, isManaged); 2554 } 2555 } 2556 } 2557 2558 private class Shell extends ShellCommand { 2559 @Override 2560 public int onCommand(String cmd) { 2561 return onShellCommand(this, cmd); 2562 } 2563 2564 @Override 2565 public void onHelp() { 2566 final PrintWriter pw = getOutPrintWriter(); 2567 pw.println("User manager (user) commands:"); 2568 pw.println(" help"); 2569 pw.println(" Print this help text."); 2570 pw.println(""); 2571 pw.println(" list"); 2572 pw.println(" Prints all users on the system."); 2573 } 2574 } 2575 2576 private static void debug(String message) { 2577 Log.d(LOG_TAG, message + 2578 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 2579 } 2580} 2581