UserManagerService.java revision c4dd021322d38ea32ac49930e904b6d08ce6490c
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.internal.widget.LockPatternUtils; 74import com.android.server.LocalServices; 75 76import org.xmlpull.v1.XmlPullParser; 77import org.xmlpull.v1.XmlPullParserException; 78import org.xmlpull.v1.XmlSerializer; 79 80import java.io.BufferedOutputStream; 81import java.io.File; 82import java.io.FileDescriptor; 83import java.io.FileInputStream; 84import java.io.FileNotFoundException; 85import java.io.FileOutputStream; 86import java.io.IOException; 87import java.io.PrintWriter; 88import java.nio.charset.StandardCharsets; 89import java.util.ArrayList; 90import java.util.List; 91 92import libcore.io.IoUtils; 93 94/** 95 * Service for {@link UserManager}. 96 * 97 * Method naming convention: 98 * <ul> 99 * <li> Methods suffixed with "LP" should be called within the {@link #mPackagesLock} lock. 100 * <li> Methods suffixed with "LR" should be called within the {@link #mRestrictionsLock} lock. 101 * <li> Methods suffixed with "LU" should be called within the {@link #mUsersLock} lock. 102 * </ul> 103 */ 104public class UserManagerService extends IUserManager.Stub { 105 private static final String LOG_TAG = "UserManagerService"; 106 static final boolean DBG = false; // DO NOT SUBMIT WITH TRUE 107 private static final boolean DBG_WITH_STACKTRACE = false; // DO NOT SUBMIT WITH TRUE 108 109 private static final String TAG_NAME = "name"; 110 private static final String ATTR_FLAGS = "flags"; 111 private static final String ATTR_ICON_PATH = "icon"; 112 private static final String ATTR_ID = "id"; 113 private static final String ATTR_CREATION_TIME = "created"; 114 private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; 115 private static final String ATTR_SERIAL_NO = "serialNumber"; 116 private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; 117 private static final String ATTR_PARTIAL = "partial"; 118 private static final String ATTR_GUEST_TO_REMOVE = "guestToRemove"; 119 private static final String ATTR_USER_VERSION = "version"; 120 private static final String ATTR_PROFILE_GROUP_ID = "profileGroupId"; 121 private static final String ATTR_RESTRICTED_PROFILE_PARENT_ID = "restrictedProfileParentId"; 122 private static final String TAG_GUEST_RESTRICTIONS = "guestRestrictions"; 123 private static final String TAG_USERS = "users"; 124 private static final String TAG_USER = "user"; 125 private static final String TAG_RESTRICTIONS = "restrictions"; 126 private static final String TAG_DEVICE_POLICY_RESTRICTIONS = "device_policy_restrictions"; 127 private static final String TAG_ENTRY = "entry"; 128 private static final String TAG_VALUE = "value"; 129 private static final String ATTR_KEY = "key"; 130 private static final String ATTR_VALUE_TYPE = "type"; 131 private static final String ATTR_MULTIPLE = "m"; 132 133 private static final String ATTR_TYPE_STRING_ARRAY = "sa"; 134 private static final String ATTR_TYPE_STRING = "s"; 135 private static final String ATTR_TYPE_BOOLEAN = "b"; 136 private static final String ATTR_TYPE_INTEGER = "i"; 137 private static final String ATTR_TYPE_BUNDLE = "B"; 138 private static final String ATTR_TYPE_BUNDLE_ARRAY = "BA"; 139 140 private static final String USER_INFO_DIR = "system" + File.separator + "users"; 141 private static final String USER_LIST_FILENAME = "userlist.xml"; 142 private static final String USER_PHOTO_FILENAME = "photo.png"; 143 private static final String USER_PHOTO_FILENAME_TMP = USER_PHOTO_FILENAME + ".tmp"; 144 145 private static final String RESTRICTIONS_FILE_PREFIX = "res_"; 146 private static final String XML_SUFFIX = ".xml"; 147 148 private static final int MIN_USER_ID = 10; 149 // We need to keep process uid within Integer.MAX_VALUE. 150 private static final int MAX_USER_ID = Integer.MAX_VALUE / UserHandle.PER_USER_RANGE; 151 152 private static final int USER_VERSION = 6; 153 154 private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms 155 156 // Maximum number of managed profiles permitted per user is 1. This cannot be increased 157 // without first making sure that the rest of the framework is prepared for it. 158 private static final int MAX_MANAGED_PROFILES = 1; 159 160 static final int WRITE_USER_MSG = 1; 161 static final int WRITE_USER_DELAY = 2*1000; // 2 seconds 162 163 private static final String XATTR_SERIAL = "user.serial"; 164 165 private final Context mContext; 166 private final PackageManagerService mPm; 167 private final Object mPackagesLock; 168 // Short-term lock for internal state, when interaction/sync with PM is not required 169 private final Object mUsersLock = new Object(); 170 private final Object mRestrictionsLock = new Object(); 171 172 private final Handler mHandler; 173 174 private final File mUsersDir; 175 private final File mUserListFile; 176 177 @GuardedBy("mUsersLock") 178 private final SparseArray<UserInfo> mUsers = new SparseArray<>(); 179 180 /** 181 * User restrictions set via UserManager. This doesn't include restrictions set by 182 * device owner / profile owners. 183 * 184 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 185 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 186 * maybe shared between {@link #mBaseUserRestrictions} and 187 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 188 * (Otherwise we won't be able to detect what restrictions have changed in 189 * {@link #updateUserRestrictionsInternalLR}. 190 */ 191 @GuardedBy("mRestrictionsLock") 192 private final SparseArray<Bundle> mBaseUserRestrictions = new SparseArray<>(); 193 194 /** 195 * Cached user restrictions that are in effect -- i.e. {@link #mBaseUserRestrictions} combined 196 * with device / profile owner restrictions. We'll initialize it lazily; use 197 * {@link #getEffectiveUserRestrictions} to access it. 198 * 199 * DO NOT Change existing {@link Bundle} in it. When changing a restriction for a user, 200 * a new {@link Bundle} should always be created and set. This is because a {@link Bundle} 201 * maybe shared between {@link #mBaseUserRestrictions} and 202 * {@link #mCachedEffectiveUserRestrictions}, but they should always updated separately. 203 * (Otherwise we won't be able to detect what restrictions have changed in 204 * {@link #updateUserRestrictionsInternalLR}. 205 */ 206 @GuardedBy("mRestrictionsLock") 207 private final SparseArray<Bundle> mCachedEffectiveUserRestrictions = new SparseArray<>(); 208 209 /** 210 * User restrictions that have already been applied in 211 * {@link #updateUserRestrictionsInternalLR(Bundle, int)}. We use it to detect restrictions 212 * that have changed since the last 213 * {@link #updateUserRestrictionsInternalLR(Bundle, int)} call. 214 */ 215 @GuardedBy("mRestrictionsLock") 216 private final SparseArray<Bundle> mAppliedUserRestrictions = new SparseArray<>(); 217 218 /** 219 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 220 * that should be applied to all users, including guests. 221 */ 222 @GuardedBy("mRestrictionsLock") 223 private Bundle mDevicePolicyGlobalUserRestrictions; 224 225 /** 226 * User restrictions set by {@link com.android.server.devicepolicy.DevicePolicyManagerService} 227 * for each user. 228 */ 229 @GuardedBy("mRestrictionsLock") 230 private final SparseArray<Bundle> mDevicePolicyLocalUserRestrictions = new SparseArray<>(); 231 232 @GuardedBy("mGuestRestrictions") 233 private final Bundle mGuestRestrictions = new Bundle(); 234 235 /** 236 * Set of user IDs being actively removed. Removed IDs linger in this set 237 * for several seconds to work around a VFS caching issue. 238 */ 239 @GuardedBy("mUsersLock") 240 private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); 241 242 @GuardedBy("mUsersLock") 243 private int[] mUserIds; 244 @GuardedBy("mPackagesLock") 245 private int mNextSerialNumber; 246 private int mUserVersion = 0; 247 248 private IAppOpsService mAppOpsService; 249 250 private final LocalService mLocalService; 251 252 @GuardedBy("mUsersLock") 253 private boolean mIsDeviceManaged; 254 255 @GuardedBy("mUsersLock") 256 private final SparseBooleanArray mIsUserManaged = new SparseBooleanArray(); 257 258 @GuardedBy("mUserRestrictionsListeners") 259 private final ArrayList<UserRestrictionsListener> mUserRestrictionsListeners = 260 new ArrayList<>(); 261 262 private static UserManagerService sInstance; 263 264 public static UserManagerService getInstance() { 265 synchronized (UserManagerService.class) { 266 return sInstance; 267 } 268 } 269 270 @VisibleForTesting 271 UserManagerService(File dataDir) { 272 this(null, null, new Object(), dataDir); 273 } 274 275 /** 276 * Called by package manager to create the service. This is closely 277 * associated with the package manager, and the given lock is the 278 * package manager's own lock. 279 */ 280 UserManagerService(Context context, PackageManagerService pm, Object packagesLock) { 281 this(context, pm, packagesLock, Environment.getDataDirectory()); 282 } 283 284 private UserManagerService(Context context, PackageManagerService pm, 285 Object packagesLock, File dataDir) { 286 mContext = context; 287 mPm = pm; 288 mPackagesLock = packagesLock; 289 mHandler = new MainHandler(); 290 synchronized (mPackagesLock) { 291 mUsersDir = new File(dataDir, USER_INFO_DIR); 292 mUsersDir.mkdirs(); 293 // Make zeroth user directory, for services to migrate their files to that location 294 File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM)); 295 userZeroDir.mkdirs(); 296 FileUtils.setPermissions(mUsersDir.toString(), 297 FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH, 298 -1, -1); 299 mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); 300 initDefaultGuestRestrictions(); 301 readUserListLP(); 302 sInstance = this; 303 } 304 mLocalService = new LocalService(); 305 LocalServices.addService(UserManagerInternal.class, mLocalService); 306 } 307 308 void systemReady() { 309 // Prune out any partially created, partially removed and ephemeral users. 310 ArrayList<UserInfo> partials = new ArrayList<>(); 311 synchronized (mUsersLock) { 312 final int userSize = mUsers.size(); 313 for (int i = 0; i < userSize; i++) { 314 UserInfo ui = mUsers.valueAt(i); 315 if ((ui.partial || ui.guestToRemove || ui.isEphemeral()) && i != 0) { 316 partials.add(ui); 317 } 318 } 319 } 320 final int partialsSize = partials.size(); 321 for (int i = 0; i < partialsSize; i++) { 322 UserInfo ui = partials.get(i); 323 Slog.w(LOG_TAG, "Removing partially created user " + ui.id 324 + " (name=" + ui.name + ")"); 325 removeUserState(ui.id); 326 } 327 328 onUserForeground(UserHandle.USER_SYSTEM); 329 330 mAppOpsService = IAppOpsService.Stub.asInterface( 331 ServiceManager.getService(Context.APP_OPS_SERVICE)); 332 333 synchronized (mRestrictionsLock) { 334 applyUserRestrictionsLR(UserHandle.USER_SYSTEM); 335 } 336 } 337 338 @Override 339 public UserInfo getPrimaryUser() { 340 checkManageUsersPermission("query users"); 341 synchronized (mUsersLock) { 342 final int userSize = mUsers.size(); 343 for (int i = 0; i < userSize; i++) { 344 UserInfo ui = mUsers.valueAt(i); 345 if (ui.isPrimary() && !mRemovingUserIds.get(ui.id)) { 346 return ui; 347 } 348 } 349 } 350 return null; 351 } 352 353 @Override 354 public @NonNull List<UserInfo> getUsers(boolean excludeDying) { 355 checkManageUsersPermission("query users"); 356 synchronized (mUsersLock) { 357 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 358 final int userSize = mUsers.size(); 359 for (int i = 0; i < userSize; i++) { 360 UserInfo ui = mUsers.valueAt(i); 361 if (ui.partial) { 362 continue; 363 } 364 if (!excludeDying || !mRemovingUserIds.get(ui.id)) { 365 users.add(ui); 366 } 367 } 368 return users; 369 } 370 } 371 372 @Override 373 public List<UserInfo> getProfiles(int userId, boolean enabledOnly) { 374 if (userId != UserHandle.getCallingUserId()) { 375 checkManageUsersPermission("getting profiles related to user " + userId); 376 } 377 final long ident = Binder.clearCallingIdentity(); 378 try { 379 synchronized (mUsersLock) { 380 return getProfilesLU(userId, enabledOnly); 381 } 382 } finally { 383 Binder.restoreCallingIdentity(ident); 384 } 385 } 386 387 /** Assume permissions already checked and caller's identity cleared */ 388 private List<UserInfo> getProfilesLU(int userId, boolean enabledOnly) { 389 UserInfo user = getUserInfoLU(userId); 390 ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); 391 if (user == null) { 392 // Probably a dying user 393 return users; 394 } 395 final int userSize = mUsers.size(); 396 for (int i = 0; i < userSize; i++) { 397 UserInfo profile = mUsers.valueAt(i); 398 if (!isProfileOf(user, profile)) { 399 continue; 400 } 401 if (enabledOnly && !profile.isEnabled()) { 402 continue; 403 } 404 if (mRemovingUserIds.get(profile.id)) { 405 continue; 406 } 407 users.add(profile); 408 } 409 return users; 410 } 411 412 @Override 413 public int getCredentialOwnerProfile(int userHandle) { 414 checkManageUsersPermission("get the credential owner"); 415 if (!LockPatternUtils.isSeparateWorkChallengeEnabled()) { 416 synchronized (mUsersLock) { 417 UserInfo profileParent = getProfileParentLU(userHandle); 418 if (profileParent != null) { 419 return profileParent.id; 420 } 421 } 422 } 423 424 return userHandle; 425 } 426 427 @Override 428 public boolean isSameProfileGroup(int userId, int otherUserId) { 429 if (userId == otherUserId) return true; 430 checkManageUsersPermission("check if in the same profile group"); 431 synchronized (mPackagesLock) { 432 return isSameProfileGroupLP(userId, otherUserId); 433 } 434 } 435 436 private boolean isSameProfileGroupLP(int userId, int otherUserId) { 437 synchronized (mUsersLock) { 438 UserInfo userInfo = getUserInfoLU(userId); 439 if (userInfo == null || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 440 return false; 441 } 442 UserInfo otherUserInfo = getUserInfoLU(otherUserId); 443 if (otherUserInfo == null 444 || otherUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 445 return false; 446 } 447 return userInfo.profileGroupId == otherUserInfo.profileGroupId; 448 } 449 } 450 451 @Override 452 public UserInfo getProfileParent(int userHandle) { 453 checkManageUsersPermission("get the profile parent"); 454 synchronized (mUsersLock) { 455 return getProfileParentLU(userHandle); 456 } 457 } 458 459 private UserInfo getProfileParentLU(int userHandle) { 460 UserInfo profile = getUserInfoLU(userHandle); 461 if (profile == null) { 462 return null; 463 } 464 int parentUserId = profile.profileGroupId; 465 if (parentUserId == UserInfo.NO_PROFILE_GROUP_ID) { 466 return null; 467 } else { 468 return getUserInfoLU(parentUserId); 469 } 470 } 471 472 private static boolean isProfileOf(UserInfo user, UserInfo profile) { 473 return user.id == profile.id || 474 (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 475 && user.profileGroupId == profile.profileGroupId); 476 } 477 478 private void broadcastProfileAvailabilityChanges(UserHandle profileHandle, 479 UserHandle parentHandle, Bundle extras) { 480 // Send intent to profile 481 Intent intent = new Intent(Intent.ACTION_AVAILABILITY_CHANGED); 482 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 483 intent.putExtras(extras); 484 mContext.sendBroadcastAsUser(intent, profileHandle); 485 486 // Send intent to parent 487 if (parentHandle != null) { 488 intent = new Intent(Intent.ACTION_MANAGED_PROFILE_AVAILABILITY_CHANGED); 489 intent.putExtra(Intent.EXTRA_USER, profileHandle); 490 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 491 intent.putExtras(extras); 492 mContext.sendBroadcastAsUser(intent, parentHandle); 493 } 494 } 495 496 @Override 497 public void setQuietModeEnabled(int userHandle, boolean enableQuietMode) { 498 checkManageUsersPermission("silence profile"); 499 boolean changed = false; 500 UserInfo profile, parent; 501 synchronized (mPackagesLock) { 502 synchronized (mUsersLock) { 503 profile = getUserInfoLU(userHandle); 504 parent = getProfileParentLU(userHandle); 505 506 } 507 if (profile == null || !profile.isManagedProfile()) { 508 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 509 } 510 if (profile.isQuietModeEnabled() != enableQuietMode) { 511 profile.flags ^= UserInfo.FLAG_QUIET_MODE; 512 writeUserLP(profile); 513 changed = true; 514 } 515 } 516 if (changed) { 517 Bundle extras = new Bundle(); 518 extras.putBoolean(Intent.EXTRA_QUIET_MODE, enableQuietMode); 519 broadcastProfileAvailabilityChanges(profile.getUserHandle(), 520 parent != null ? parent.getUserHandle() : null, extras); 521 } 522 } 523 524 @Override 525 public boolean isQuietModeEnabled(int userHandle) { 526 synchronized (mPackagesLock) { 527 UserInfo info; 528 synchronized (mUsersLock) { 529 info = getUserInfoLU(userHandle); 530 } 531 if (info == null || !info.isManagedProfile()) { 532 throw new IllegalArgumentException("User " + userHandle + " is not a profile"); 533 } 534 return info.isQuietModeEnabled(); 535 } 536 } 537 538 @Override 539 public void setUserEnabled(int userId) { 540 checkManageUsersPermission("enable user"); 541 synchronized (mPackagesLock) { 542 UserInfo info; 543 synchronized (mUsersLock) { 544 info = getUserInfoLU(userId); 545 } 546 if (info != null && !info.isEnabled()) { 547 info.flags ^= UserInfo.FLAG_DISABLED; 548 writeUserLP(info); 549 } 550 } 551 } 552 553 @Override 554 public UserInfo getUserInfo(int userId) { 555 checkManageUsersPermission("query user"); 556 synchronized (mUsersLock) { 557 return getUserInfoLU(userId); 558 } 559 } 560 561 @Override 562 public boolean isRestricted() { 563 synchronized (mUsersLock) { 564 return getUserInfoLU(UserHandle.getCallingUserId()).isRestricted(); 565 } 566 } 567 568 @Override 569 public boolean canHaveRestrictedProfile(int userId) { 570 checkManageUsersPermission("canHaveRestrictedProfile"); 571 synchronized (mUsersLock) { 572 final UserInfo userInfo = getUserInfoLU(userId); 573 if (userInfo == null || !userInfo.canHaveProfile()) { 574 return false; 575 } 576 if (!userInfo.isAdmin()) { 577 return false; 578 } 579 // restricted profile can be created if there is no DO set and the admin user has no PO; 580 return !mIsDeviceManaged && !mIsUserManaged.get(userId); 581 } 582 } 583 584 /* 585 * Should be locked on mUsers before calling this. 586 */ 587 private UserInfo getUserInfoLU(int userId) { 588 UserInfo ui = mUsers.get(userId); 589 // If it is partial and not in the process of being removed, return as unknown user. 590 if (ui != null && ui.partial && !mRemovingUserIds.get(userId)) { 591 Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); 592 return null; 593 } 594 return ui; 595 } 596 597 /** 598 * Obtains {@link #mUsersLock} and return UserInfo from mUsers. 599 * <p>No permissions checking or any addition checks are made</p> 600 */ 601 private UserInfo getUserInfoNoChecks(int userId) { 602 synchronized (mUsersLock) { 603 return mUsers.get(userId); 604 } 605 } 606 607 /** Called by PackageManagerService */ 608 public boolean exists(int userId) { 609 return getUserInfoNoChecks(userId) != null; 610 } 611 612 @Override 613 public void setUserName(int userId, String name) { 614 checkManageUsersPermission("rename users"); 615 boolean changed = false; 616 synchronized (mPackagesLock) { 617 UserInfo info = getUserInfoNoChecks(userId); 618 if (info == null || info.partial) { 619 Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); 620 return; 621 } 622 if (name != null && !name.equals(info.name)) { 623 info.name = name; 624 writeUserLP(info); 625 changed = true; 626 } 627 } 628 if (changed) { 629 sendUserInfoChangedBroadcast(userId); 630 } 631 } 632 633 @Override 634 public void setUserIcon(int userId, Bitmap bitmap) { 635 checkManageUsersPermission("update users"); 636 long ident = Binder.clearCallingIdentity(); 637 try { 638 synchronized (mPackagesLock) { 639 UserInfo info = getUserInfoNoChecks(userId); 640 if (info == null || info.partial) { 641 Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); 642 return; 643 } 644 writeBitmapLP(info, bitmap); 645 writeUserLP(info); 646 } 647 sendUserInfoChangedBroadcast(userId); 648 } finally { 649 Binder.restoreCallingIdentity(ident); 650 } 651 } 652 653 private void sendUserInfoChangedBroadcast(int userId) { 654 Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); 655 changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 656 changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 657 mContext.sendBroadcastAsUser(changedIntent, UserHandle.ALL); 658 } 659 660 @Override 661 public ParcelFileDescriptor getUserIcon(int userId) { 662 String iconPath; 663 synchronized (mPackagesLock) { 664 UserInfo info = getUserInfoNoChecks(userId); 665 if (info == null || info.partial) { 666 Slog.w(LOG_TAG, "getUserIcon: unknown user #" + userId); 667 return null; 668 } 669 int callingGroupId = getUserInfoNoChecks(UserHandle.getCallingUserId()).profileGroupId; 670 if (callingGroupId == UserInfo.NO_PROFILE_GROUP_ID 671 || callingGroupId != info.profileGroupId) { 672 checkManageUsersPermission("get the icon of a user who is not related"); 673 } 674 if (info.iconPath == null) { 675 return null; 676 } 677 iconPath = info.iconPath; 678 } 679 680 try { 681 return ParcelFileDescriptor.open( 682 new File(iconPath), ParcelFileDescriptor.MODE_READ_ONLY); 683 } catch (FileNotFoundException e) { 684 Log.e(LOG_TAG, "Couldn't find icon file", e); 685 } 686 return null; 687 } 688 689 public void makeInitialized(int userId) { 690 checkManageUsersPermission("makeInitialized"); 691 boolean scheduleWriteUser = false; 692 UserInfo info; 693 synchronized (mUsersLock) { 694 info = mUsers.get(userId); 695 if (info == null || info.partial) { 696 Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); 697 return; 698 } 699 if ((info.flags & UserInfo.FLAG_INITIALIZED) == 0) { 700 info.flags |= UserInfo.FLAG_INITIALIZED; 701 scheduleWriteUser = true; 702 } 703 } 704 if (scheduleWriteUser) { 705 scheduleWriteUser(info); 706 } 707 } 708 709 /** 710 * If default guest restrictions haven't been initialized yet, add the basic 711 * restrictions. 712 */ 713 private void initDefaultGuestRestrictions() { 714 synchronized (mGuestRestrictions) { 715 if (mGuestRestrictions.isEmpty()) { 716 mGuestRestrictions.putBoolean(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, true); 717 mGuestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, true); 718 mGuestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true); 719 } 720 } 721 } 722 723 @Override 724 public Bundle getDefaultGuestRestrictions() { 725 checkManageUsersPermission("getDefaultGuestRestrictions"); 726 synchronized (mGuestRestrictions) { 727 return new Bundle(mGuestRestrictions); 728 } 729 } 730 731 @Override 732 public void setDefaultGuestRestrictions(Bundle restrictions) { 733 checkManageUsersPermission("setDefaultGuestRestrictions"); 734 synchronized (mGuestRestrictions) { 735 mGuestRestrictions.clear(); 736 mGuestRestrictions.putAll(restrictions); 737 } 738 synchronized (mPackagesLock) { 739 writeUserListLP(); 740 } 741 } 742 743 /** 744 * See {@link UserManagerInternal#setDevicePolicyUserRestrictions(int, Bundle, Bundle)} 745 */ 746 void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle local, 747 @Nullable Bundle global) { 748 Preconditions.checkNotNull(local); 749 boolean globalChanged = false; 750 boolean localChanged; 751 synchronized (mRestrictionsLock) { 752 if (global != null) { 753 // Update global. 754 globalChanged = !UserRestrictionsUtils.areEqual( 755 mDevicePolicyGlobalUserRestrictions, global); 756 if (globalChanged) { 757 mDevicePolicyGlobalUserRestrictions = global; 758 } 759 } 760 { 761 // Update local. 762 final Bundle prev = mDevicePolicyLocalUserRestrictions.get(userId); 763 localChanged = !UserRestrictionsUtils.areEqual(prev, local); 764 if (localChanged) { 765 mDevicePolicyLocalUserRestrictions.put(userId, local); 766 } 767 } 768 } 769 if (DBG) { 770 Log.d(LOG_TAG, "setDevicePolicyUserRestrictions: userId=" + userId 771 + " global=" + global + (globalChanged ? " (changed)" : "") 772 + " local=" + local + (localChanged ? " (changed)" : "") 773 ); 774 } 775 // Don't call them within the mRestrictionsLock. 776 synchronized (mPackagesLock) { 777 if (globalChanged) { 778 writeUserListLP(); 779 } 780 if (localChanged) { 781 writeUserLP(getUserInfoNoChecks(userId)); 782 } 783 } 784 785 synchronized (mRestrictionsLock) { 786 if (globalChanged) { 787 applyUserRestrictionsForAllUsersLR(); 788 } else if (localChanged) { 789 applyUserRestrictionsLR(userId); 790 } 791 } 792 } 793 794 @GuardedBy("mRestrictionsLock") 795 private Bundle computeEffectiveUserRestrictionsLR(int userId) { 796 final Bundle baseRestrictions = 797 UserRestrictionsUtils.nonNull(mBaseUserRestrictions.get(userId)); 798 final Bundle global = mDevicePolicyGlobalUserRestrictions; 799 final Bundle local = mDevicePolicyLocalUserRestrictions.get(userId); 800 801 if (UserRestrictionsUtils.isEmpty(global) && UserRestrictionsUtils.isEmpty(local)) { 802 // Common case first. 803 return baseRestrictions; 804 } 805 final Bundle effective = UserRestrictionsUtils.clone(baseRestrictions); 806 UserRestrictionsUtils.merge(effective, global); 807 UserRestrictionsUtils.merge(effective, local); 808 809 return effective; 810 } 811 812 @GuardedBy("mRestrictionsLock") 813 private void invalidateEffectiveUserRestrictionsLR(int userId) { 814 if (DBG) { 815 Log.d(LOG_TAG, "invalidateEffectiveUserRestrictions userId=" + userId); 816 } 817 mCachedEffectiveUserRestrictions.remove(userId); 818 } 819 820 private Bundle getEffectiveUserRestrictions(int userId) { 821 synchronized (mRestrictionsLock) { 822 Bundle restrictions = mCachedEffectiveUserRestrictions.get(userId); 823 if (restrictions == null) { 824 restrictions = computeEffectiveUserRestrictionsLR(userId); 825 mCachedEffectiveUserRestrictions.put(userId, restrictions); 826 } 827 return restrictions; 828 } 829 } 830 831 /** @return a specific user restriction that's in effect currently. */ 832 @Override 833 public boolean hasUserRestriction(String restrictionKey, int userId) { 834 Bundle restrictions = getEffectiveUserRestrictions(userId); 835 return restrictions != null && restrictions.getBoolean(restrictionKey); 836 } 837 838 /** 839 * @return UserRestrictions that are in effect currently. This always returns a new 840 * {@link Bundle}. 841 */ 842 @Override 843 public Bundle getUserRestrictions(int userId) { 844 return UserRestrictionsUtils.clone(getEffectiveUserRestrictions(userId)); 845 } 846 847 @Override 848 public boolean hasBaseUserRestriction(String restrictionKey, int userId) { 849 checkManageUsersPermission("hasBaseUserRestriction"); 850 synchronized (mRestrictionsLock) { 851 Bundle bundle = mBaseUserRestrictions.get(userId); 852 return (bundle != null && bundle.getBoolean(restrictionKey, false)); 853 } 854 } 855 856 @Override 857 public void setUserRestriction(String key, boolean value, int userId) { 858 checkManageUsersPermission("setUserRestriction"); 859 synchronized (mRestrictionsLock) { 860 // Note we can't modify Bundles stored in mBaseUserRestrictions directly, so create 861 // a copy. 862 final Bundle newRestrictions = UserRestrictionsUtils.clone( 863 mBaseUserRestrictions.get(userId)); 864 newRestrictions.putBoolean(key, value); 865 866 updateUserRestrictionsInternalLR(newRestrictions, userId); 867 } 868 } 869 870 /** 871 * Optionally updating user restrictions, calculate the effective user restrictions and also 872 * propagate to other services and system settings. 873 * 874 * @param newRestrictions User restrictions to set. 875 * If null, will not update user restrictions and only does the propagation. 876 * @param userId target user ID. 877 */ 878 @GuardedBy("mRestrictionsLock") 879 private void updateUserRestrictionsInternalLR( 880 @Nullable Bundle newRestrictions, int userId) { 881 882 final Bundle prevAppliedRestrictions = UserRestrictionsUtils.nonNull( 883 mAppliedUserRestrictions.get(userId)); 884 885 // Update base restrictions. 886 if (newRestrictions != null) { 887 // If newRestrictions == the current one, it's probably a bug. 888 final Bundle prevBaseRestrictions = mBaseUserRestrictions.get(userId); 889 890 Preconditions.checkState(prevBaseRestrictions != newRestrictions); 891 Preconditions.checkState(mCachedEffectiveUserRestrictions.get(userId) 892 != newRestrictions); 893 894 if (!UserRestrictionsUtils.areEqual(prevBaseRestrictions, newRestrictions)) { 895 mBaseUserRestrictions.put(userId, newRestrictions); 896 scheduleWriteUser(getUserInfoNoChecks(userId)); 897 } 898 } 899 900 final Bundle effective = computeEffectiveUserRestrictionsLR(userId); 901 902 mCachedEffectiveUserRestrictions.put(userId, effective); 903 904 // Apply the new restrictions. 905 if (DBG) { 906 debug("Applying user restrictions: userId=" + userId 907 + " new=" + effective + " prev=" + prevAppliedRestrictions); 908 } 909 910 if (mAppOpsService != null) { // We skip it until system-ready. 911 final long token = Binder.clearCallingIdentity(); 912 try { 913 mAppOpsService.setUserRestrictions(effective, userId); 914 } catch (RemoteException e) { 915 Log.w(LOG_TAG, "Unable to notify AppOpsService of UserRestrictions"); 916 } finally { 917 Binder.restoreCallingIdentity(token); 918 } 919 } 920 921 propagateUserRestrictionsLR(userId, effective, prevAppliedRestrictions); 922 923 mAppliedUserRestrictions.put(userId, new Bundle(effective)); 924 } 925 926 private void propagateUserRestrictionsLR(final int userId, 927 Bundle newRestrictions, Bundle prevRestrictions) { 928 // Note this method doesn't touch any state, meaning it doesn't require mRestrictionsLock 929 // actually, but we still need some kind of synchronization otherwise we might end up 930 // calling listeners out-of-order, thus "LR". 931 932 if (UserRestrictionsUtils.areEqual(newRestrictions, prevRestrictions)) { 933 return; 934 } 935 936 final Bundle newRestrictionsFinal = new Bundle(newRestrictions); 937 final Bundle prevRestrictionsFinal = new Bundle(prevRestrictions); 938 939 mHandler.post(new Runnable() { 940 @Override 941 public void run() { 942 UserRestrictionsUtils.applyUserRestrictions( 943 mContext, userId, newRestrictionsFinal, prevRestrictionsFinal); 944 945 final UserRestrictionsListener[] listeners; 946 synchronized (mUserRestrictionsListeners) { 947 listeners = new UserRestrictionsListener[mUserRestrictionsListeners.size()]; 948 mUserRestrictionsListeners.toArray(listeners); 949 } 950 for (int i = 0; i < listeners.length; i++) { 951 listeners[i].onUserRestrictionsChanged(userId, 952 newRestrictionsFinal, prevRestrictionsFinal); 953 } 954 } 955 }); 956 } 957 958 // Package private for the inner class. 959 void applyUserRestrictionsLR(int userId) { 960 updateUserRestrictionsInternalLR(null, userId); 961 } 962 963 @GuardedBy("mRestrictionsLock") 964 // Package private for the inner class. 965 void applyUserRestrictionsForAllUsersLR() { 966 if (DBG) { 967 debug("applyUserRestrictionsForAllUsersLR"); 968 } 969 // First, invalidate all cached values. 970 mCachedEffectiveUserRestrictions.clear(); 971 972 // We don't want to call into ActivityManagerNative while taking a lock, so we'll call 973 // it on a handler. 974 final Runnable r = new Runnable() { 975 @Override 976 public void run() { 977 // Then get the list of running users. 978 final int[] runningUsers; 979 try { 980 runningUsers = ActivityManagerNative.getDefault().getRunningUserIds(); 981 } catch (RemoteException e) { 982 Log.w(LOG_TAG, "Unable to access ActivityManagerNative"); 983 return; 984 } 985 // Then re-calculate the effective restrictions and apply, only for running users. 986 // It's okay if a new user has started after the getRunningUserIds() call, 987 // because we'll do the same thing (re-calculate the restrictions and apply) 988 // when we start a user. 989 synchronized (mRestrictionsLock) { 990 for (int i = 0; i < runningUsers.length; i++) { 991 applyUserRestrictionsLR(runningUsers[i]); 992 } 993 } 994 } 995 }; 996 mHandler.post(r); 997 } 998 999 /** 1000 * Check if we've hit the limit of how many users can be created. 1001 */ 1002 private boolean isUserLimitReached() { 1003 int count; 1004 synchronized (mUsersLock) { 1005 count = getAliveUsersExcludingGuestsCountLU(); 1006 } 1007 return count >= UserManager.getMaxSupportedUsers(); 1008 } 1009 1010 @Override 1011 public boolean canAddMoreManagedProfiles(int userId, boolean allowedToRemoveOne) { 1012 checkManageUsersPermission("check if more managed profiles can be added."); 1013 if (ActivityManager.isLowRamDeviceStatic()) { 1014 return false; 1015 } 1016 if (!mContext.getPackageManager().hasSystemFeature( 1017 PackageManager.FEATURE_MANAGED_USERS)) { 1018 return false; 1019 } 1020 // Limit number of managed profiles that can be created 1021 final int managedProfilesCount = getProfiles(userId, true).size() - 1; 1022 final int profilesRemovedCount = managedProfilesCount > 0 && allowedToRemoveOne ? 1 : 0; 1023 if (managedProfilesCount - profilesRemovedCount >= MAX_MANAGED_PROFILES) { 1024 return false; 1025 } 1026 synchronized(mUsersLock) { 1027 UserInfo userInfo = getUserInfoLU(userId); 1028 if (!userInfo.canHaveProfile()) { 1029 return false; 1030 } 1031 int usersCountAfterRemoving = getAliveUsersExcludingGuestsCountLU() 1032 - profilesRemovedCount; 1033 // We allow creating a managed profile in the special case where there is only one user. 1034 return usersCountAfterRemoving == 1 1035 || usersCountAfterRemoving < UserManager.getMaxSupportedUsers(); 1036 } 1037 } 1038 1039 private int getAliveUsersExcludingGuestsCountLU() { 1040 int aliveUserCount = 0; 1041 final int totalUserCount = mUsers.size(); 1042 // Skip over users being removed 1043 for (int i = 0; i < totalUserCount; i++) { 1044 UserInfo user = mUsers.valueAt(i); 1045 if (!mRemovingUserIds.get(user.id) 1046 && !user.isGuest() && !user.partial) { 1047 aliveUserCount++; 1048 } 1049 } 1050 return aliveUserCount; 1051 } 1052 1053 /** 1054 * Enforces that only the system UID or root's UID or apps that have the 1055 * {@link android.Manifest.permission#MANAGE_USERS MANAGE_USERS} 1056 * permission can make certain calls to the UserManager. 1057 * 1058 * @param message used as message if SecurityException is thrown 1059 * @throws SecurityException if the caller is not system or root 1060 */ 1061 private static final void checkManageUsersPermission(String message) { 1062 final int uid = Binder.getCallingUid(); 1063 if (uid != Process.SYSTEM_UID && uid != 0 1064 && ActivityManager.checkComponentPermission( 1065 android.Manifest.permission.MANAGE_USERS, 1066 uid, -1, true) != PackageManager.PERMISSION_GRANTED) { 1067 throw new SecurityException("You need MANAGE_USERS permission to: " + message); 1068 } 1069 } 1070 1071 private static void checkSystemOrRoot(String message) { 1072 final int uid = Binder.getCallingUid(); 1073 if (uid != Process.SYSTEM_UID && uid != 0) { 1074 throw new SecurityException("Only system may call: " + message); 1075 } 1076 } 1077 1078 private void writeBitmapLP(UserInfo info, Bitmap bitmap) { 1079 try { 1080 File dir = new File(mUsersDir, Integer.toString(info.id)); 1081 File file = new File(dir, USER_PHOTO_FILENAME); 1082 File tmp = new File(dir, USER_PHOTO_FILENAME_TMP); 1083 if (!dir.exists()) { 1084 dir.mkdir(); 1085 FileUtils.setPermissions( 1086 dir.getPath(), 1087 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1088 -1, -1); 1089 } 1090 FileOutputStream os; 1091 if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp)) 1092 && tmp.renameTo(file)) { 1093 info.iconPath = file.getAbsolutePath(); 1094 } 1095 try { 1096 os.close(); 1097 } catch (IOException ioe) { 1098 // What the ... ! 1099 } 1100 tmp.delete(); 1101 } catch (FileNotFoundException e) { 1102 Slog.w(LOG_TAG, "Error setting photo for user ", e); 1103 } 1104 } 1105 1106 /** 1107 * Returns an array of user ids. This array is cached here for quick access, so do not modify or 1108 * cache it elsewhere. 1109 * @return the array of user ids. 1110 */ 1111 public int[] getUserIds() { 1112 synchronized (mUsersLock) { 1113 return mUserIds; 1114 } 1115 } 1116 1117 private void readUserListLP() { 1118 if (!mUserListFile.exists()) { 1119 fallbackToSingleUserLP(); 1120 return; 1121 } 1122 FileInputStream fis = null; 1123 AtomicFile userListFile = new AtomicFile(mUserListFile); 1124 try { 1125 fis = userListFile.openRead(); 1126 XmlPullParser parser = Xml.newPullParser(); 1127 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1128 int type; 1129 while ((type = parser.next()) != XmlPullParser.START_TAG 1130 && type != XmlPullParser.END_DOCUMENT) { 1131 ; 1132 } 1133 1134 if (type != XmlPullParser.START_TAG) { 1135 Slog.e(LOG_TAG, "Unable to read user list"); 1136 fallbackToSingleUserLP(); 1137 return; 1138 } 1139 1140 mNextSerialNumber = -1; 1141 if (parser.getName().equals(TAG_USERS)) { 1142 String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); 1143 if (lastSerialNumber != null) { 1144 mNextSerialNumber = Integer.parseInt(lastSerialNumber); 1145 } 1146 String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); 1147 if (versionNumber != null) { 1148 mUserVersion = Integer.parseInt(versionNumber); 1149 } 1150 } 1151 1152 final Bundle newDevicePolicyGlobalUserRestrictions = new Bundle(); 1153 1154 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { 1155 if (type == XmlPullParser.START_TAG) { 1156 final String name = parser.getName(); 1157 if (name.equals(TAG_USER)) { 1158 String id = parser.getAttributeValue(null, ATTR_ID); 1159 UserInfo user = readUserLP(Integer.parseInt(id)); 1160 1161 if (user != null) { 1162 synchronized (mUsersLock) { 1163 mUsers.put(user.id, user); 1164 if (mNextSerialNumber < 0 || mNextSerialNumber <= user.id) { 1165 mNextSerialNumber = user.id + 1; 1166 } 1167 } 1168 } 1169 } else if (name.equals(TAG_GUEST_RESTRICTIONS)) { 1170 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1171 && type != XmlPullParser.END_TAG) { 1172 if (type == XmlPullParser.START_TAG) { 1173 if (parser.getName().equals(TAG_RESTRICTIONS)) { 1174 synchronized (mGuestRestrictions) { 1175 UserRestrictionsUtils 1176 .readRestrictions(parser, mGuestRestrictions); 1177 } 1178 } else if (parser.getName().equals(TAG_DEVICE_POLICY_RESTRICTIONS) 1179 ) { 1180 UserRestrictionsUtils.readRestrictions(parser, 1181 newDevicePolicyGlobalUserRestrictions); 1182 } 1183 break; 1184 } 1185 } 1186 } 1187 } 1188 } 1189 synchronized (mRestrictionsLock) { 1190 mDevicePolicyGlobalUserRestrictions = newDevicePolicyGlobalUserRestrictions; 1191 } 1192 updateUserIds(); 1193 upgradeIfNecessaryLP(); 1194 } catch (IOException | XmlPullParserException e) { 1195 fallbackToSingleUserLP(); 1196 } finally { 1197 IoUtils.closeQuietly(fis); 1198 } 1199 } 1200 1201 /** 1202 * Upgrade steps between versions, either for fixing bugs or changing the data format. 1203 */ 1204 private void upgradeIfNecessaryLP() { 1205 final int originalVersion = mUserVersion; 1206 int userVersion = mUserVersion; 1207 if (userVersion < 1) { 1208 // Assign a proper name for the owner, if not initialized correctly before 1209 UserInfo user = getUserInfoNoChecks(UserHandle.USER_SYSTEM); 1210 if ("Primary".equals(user.name)) { 1211 user.name = mContext.getResources().getString(com.android.internal.R.string.owner_name); 1212 scheduleWriteUser(user); 1213 } 1214 userVersion = 1; 1215 } 1216 1217 if (userVersion < 2) { 1218 // Owner should be marked as initialized 1219 UserInfo user = getUserInfoNoChecks(UserHandle.USER_SYSTEM); 1220 if ((user.flags & UserInfo.FLAG_INITIALIZED) == 0) { 1221 user.flags |= UserInfo.FLAG_INITIALIZED; 1222 scheduleWriteUser(user); 1223 } 1224 userVersion = 2; 1225 } 1226 1227 1228 if (userVersion < 4) { 1229 userVersion = 4; 1230 } 1231 1232 if (userVersion < 5) { 1233 initDefaultGuestRestrictions(); 1234 userVersion = 5; 1235 } 1236 1237 if (userVersion < 6) { 1238 final boolean splitSystemUser = UserManager.isSplitSystemUser(); 1239 synchronized (mUsersLock) { 1240 for (int i = 0; i < mUsers.size(); i++) { 1241 UserInfo user = mUsers.valueAt(i); 1242 // In non-split mode, only user 0 can have restricted profiles 1243 if (!splitSystemUser && user.isRestricted() 1244 && (user.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID)) { 1245 user.restrictedProfileParentId = UserHandle.USER_SYSTEM; 1246 scheduleWriteUser(user); 1247 } 1248 } 1249 } 1250 userVersion = 6; 1251 } 1252 1253 if (userVersion < USER_VERSION) { 1254 Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " 1255 + USER_VERSION); 1256 } else { 1257 mUserVersion = userVersion; 1258 1259 if (originalVersion < mUserVersion) { 1260 writeUserListLP(); 1261 } 1262 } 1263 } 1264 1265 private void fallbackToSingleUserLP() { 1266 int flags = UserInfo.FLAG_INITIALIZED; 1267 // In split system user mode, the admin and primary flags are assigned to the first human 1268 // user. 1269 if (!UserManager.isSplitSystemUser()) { 1270 flags |= UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY; 1271 } 1272 // Create the system user 1273 UserInfo system = new UserInfo(UserHandle.USER_SYSTEM, 1274 mContext.getResources().getString(com.android.internal.R.string.owner_name), null, 1275 flags); 1276 synchronized (mUsersLock) { 1277 mUsers.put(system.id, system); 1278 } 1279 mNextSerialNumber = MIN_USER_ID; 1280 mUserVersion = USER_VERSION; 1281 1282 Bundle restrictions = new Bundle(); 1283 synchronized (mRestrictionsLock) { 1284 mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions); 1285 } 1286 1287 updateUserIds(); 1288 initDefaultGuestRestrictions(); 1289 1290 writeUserListLP(); 1291 writeUserLP(system); 1292 } 1293 1294 private void scheduleWriteUser(UserInfo userInfo) { 1295 if (DBG) { 1296 debug("scheduleWriteUser"); 1297 } 1298 // No need to wrap it within a lock -- worst case, we'll just post the same message 1299 // twice. 1300 if (!mHandler.hasMessages(WRITE_USER_MSG, userInfo)) { 1301 Message msg = mHandler.obtainMessage(WRITE_USER_MSG, userInfo); 1302 mHandler.sendMessageDelayed(msg, WRITE_USER_DELAY); 1303 } 1304 } 1305 1306 /* 1307 * Writes the user file in this format: 1308 * 1309 * <user flags="20039023" id="0"> 1310 * <name>Primary</name> 1311 * </user> 1312 */ 1313 private void writeUserLP(UserInfo userInfo) { 1314 if (DBG) { 1315 debug("writeUserLP " + userInfo); 1316 } 1317 FileOutputStream fos = null; 1318 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userInfo.id + XML_SUFFIX)); 1319 try { 1320 fos = userFile.startWrite(); 1321 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1322 1323 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1324 final XmlSerializer serializer = new FastXmlSerializer(); 1325 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1326 serializer.startDocument(null, true); 1327 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1328 1329 serializer.startTag(null, TAG_USER); 1330 serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); 1331 serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); 1332 serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); 1333 serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); 1334 serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, 1335 Long.toString(userInfo.lastLoggedInTime)); 1336 if (userInfo.iconPath != null) { 1337 serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); 1338 } 1339 if (userInfo.partial) { 1340 serializer.attribute(null, ATTR_PARTIAL, "true"); 1341 } 1342 if (userInfo.guestToRemove) { 1343 serializer.attribute(null, ATTR_GUEST_TO_REMOVE, "true"); 1344 } 1345 if (userInfo.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID) { 1346 serializer.attribute(null, ATTR_PROFILE_GROUP_ID, 1347 Integer.toString(userInfo.profileGroupId)); 1348 } 1349 if (userInfo.restrictedProfileParentId != UserInfo.NO_PROFILE_GROUP_ID) { 1350 serializer.attribute(null, ATTR_RESTRICTED_PROFILE_PARENT_ID, 1351 Integer.toString(userInfo.restrictedProfileParentId)); 1352 } 1353 serializer.startTag(null, TAG_NAME); 1354 serializer.text(userInfo.name); 1355 serializer.endTag(null, TAG_NAME); 1356 synchronized (mRestrictionsLock) { 1357 UserRestrictionsUtils.writeRestrictions(serializer, 1358 mBaseUserRestrictions.get(userInfo.id), TAG_RESTRICTIONS); 1359 UserRestrictionsUtils.writeRestrictions(serializer, 1360 mDevicePolicyLocalUserRestrictions.get(userInfo.id), 1361 TAG_DEVICE_POLICY_RESTRICTIONS); 1362 } 1363 serializer.endTag(null, TAG_USER); 1364 1365 serializer.endDocument(); 1366 userFile.finishWrite(fos); 1367 } catch (Exception ioe) { 1368 Slog.e(LOG_TAG, "Error writing user info " + userInfo.id + "\n" + ioe); 1369 userFile.failWrite(fos); 1370 } 1371 } 1372 1373 /* 1374 * Writes the user list file in this format: 1375 * 1376 * <users nextSerialNumber="3"> 1377 * <user id="0"></user> 1378 * <user id="2"></user> 1379 * </users> 1380 */ 1381 private void writeUserListLP() { 1382 if (DBG) { 1383 debug("writeUserList"); 1384 } 1385 FileOutputStream fos = null; 1386 AtomicFile userListFile = new AtomicFile(mUserListFile); 1387 try { 1388 fos = userListFile.startWrite(); 1389 final BufferedOutputStream bos = new BufferedOutputStream(fos); 1390 1391 // XmlSerializer serializer = XmlUtils.serializerInstance(); 1392 final XmlSerializer serializer = new FastXmlSerializer(); 1393 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 1394 serializer.startDocument(null, true); 1395 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 1396 1397 serializer.startTag(null, TAG_USERS); 1398 serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); 1399 serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); 1400 1401 serializer.startTag(null, TAG_GUEST_RESTRICTIONS); 1402 synchronized (mGuestRestrictions) { 1403 UserRestrictionsUtils 1404 .writeRestrictions(serializer, mGuestRestrictions, TAG_RESTRICTIONS); 1405 } 1406 serializer.endTag(null, TAG_GUEST_RESTRICTIONS); 1407 synchronized (mRestrictionsLock) { 1408 UserRestrictionsUtils.writeRestrictions(serializer, 1409 mDevicePolicyGlobalUserRestrictions, TAG_DEVICE_POLICY_RESTRICTIONS); 1410 } 1411 int[] userIdsToWrite; 1412 synchronized (mUsersLock) { 1413 userIdsToWrite = new int[mUsers.size()]; 1414 for (int i = 0; i < userIdsToWrite.length; i++) { 1415 UserInfo user = mUsers.valueAt(i); 1416 userIdsToWrite[i] = user.id; 1417 } 1418 } 1419 for (int id : userIdsToWrite) { 1420 serializer.startTag(null, TAG_USER); 1421 serializer.attribute(null, ATTR_ID, Integer.toString(id)); 1422 serializer.endTag(null, TAG_USER); 1423 } 1424 1425 serializer.endTag(null, TAG_USERS); 1426 1427 serializer.endDocument(); 1428 userListFile.finishWrite(fos); 1429 } catch (Exception e) { 1430 userListFile.failWrite(fos); 1431 Slog.e(LOG_TAG, "Error writing user list"); 1432 } 1433 } 1434 1435 private UserInfo readUserLP(int id) { 1436 int flags = 0; 1437 int serialNumber = id; 1438 String name = null; 1439 String iconPath = null; 1440 long creationTime = 0L; 1441 long lastLoggedInTime = 0L; 1442 int profileGroupId = UserInfo.NO_PROFILE_GROUP_ID; 1443 int restrictedProfileParentId = UserInfo.NO_PROFILE_GROUP_ID; 1444 boolean partial = false; 1445 boolean guestToRemove = false; 1446 Bundle baseRestrictions = new Bundle(); 1447 Bundle localRestrictions = new Bundle(); 1448 1449 FileInputStream fis = null; 1450 try { 1451 AtomicFile userFile = 1452 new AtomicFile(new File(mUsersDir, Integer.toString(id) + XML_SUFFIX)); 1453 fis = userFile.openRead(); 1454 XmlPullParser parser = Xml.newPullParser(); 1455 parser.setInput(fis, StandardCharsets.UTF_8.name()); 1456 int type; 1457 while ((type = parser.next()) != XmlPullParser.START_TAG 1458 && type != XmlPullParser.END_DOCUMENT) { 1459 ; 1460 } 1461 1462 if (type != XmlPullParser.START_TAG) { 1463 Slog.e(LOG_TAG, "Unable to read user " + id); 1464 return null; 1465 } 1466 1467 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { 1468 int storedId = readIntAttribute(parser, ATTR_ID, -1); 1469 if (storedId != id) { 1470 Slog.e(LOG_TAG, "User id does not match the file name"); 1471 return null; 1472 } 1473 serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); 1474 flags = readIntAttribute(parser, ATTR_FLAGS, 0); 1475 iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); 1476 creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); 1477 lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); 1478 profileGroupId = readIntAttribute(parser, ATTR_PROFILE_GROUP_ID, 1479 UserInfo.NO_PROFILE_GROUP_ID); 1480 restrictedProfileParentId = readIntAttribute(parser, 1481 ATTR_RESTRICTED_PROFILE_PARENT_ID, UserInfo.NO_PROFILE_GROUP_ID); 1482 String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); 1483 if ("true".equals(valueString)) { 1484 partial = true; 1485 } 1486 valueString = parser.getAttributeValue(null, ATTR_GUEST_TO_REMOVE); 1487 if ("true".equals(valueString)) { 1488 guestToRemove = true; 1489 } 1490 1491 int outerDepth = parser.getDepth(); 1492 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 1493 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1494 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1495 continue; 1496 } 1497 String tag = parser.getName(); 1498 if (TAG_NAME.equals(tag)) { 1499 type = parser.next(); 1500 if (type == XmlPullParser.TEXT) { 1501 name = parser.getText(); 1502 } 1503 } else if (TAG_RESTRICTIONS.equals(tag)) { 1504 UserRestrictionsUtils.readRestrictions(parser, baseRestrictions); 1505 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) { 1506 UserRestrictionsUtils.readRestrictions(parser, localRestrictions); 1507 } 1508 } 1509 } 1510 1511 UserInfo userInfo = new UserInfo(id, name, iconPath, flags); 1512 userInfo.serialNumber = serialNumber; 1513 userInfo.creationTime = creationTime; 1514 userInfo.lastLoggedInTime = lastLoggedInTime; 1515 userInfo.partial = partial; 1516 userInfo.guestToRemove = guestToRemove; 1517 userInfo.profileGroupId = profileGroupId; 1518 userInfo.restrictedProfileParentId = restrictedProfileParentId; 1519 synchronized (mRestrictionsLock) { 1520 mBaseUserRestrictions.put(id, baseRestrictions); 1521 mDevicePolicyLocalUserRestrictions.put(id, localRestrictions); 1522 } 1523 return userInfo; 1524 1525 } catch (IOException ioe) { 1526 } catch (XmlPullParserException pe) { 1527 } finally { 1528 if (fis != null) { 1529 try { 1530 fis.close(); 1531 } catch (IOException e) { 1532 } 1533 } 1534 } 1535 return null; 1536 } 1537 1538 private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { 1539 String valueString = parser.getAttributeValue(null, attr); 1540 if (valueString == null) return defaultValue; 1541 try { 1542 return Integer.parseInt(valueString); 1543 } catch (NumberFormatException nfe) { 1544 return defaultValue; 1545 } 1546 } 1547 1548 private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { 1549 String valueString = parser.getAttributeValue(null, attr); 1550 if (valueString == null) return defaultValue; 1551 try { 1552 return Long.parseLong(valueString); 1553 } catch (NumberFormatException nfe) { 1554 return defaultValue; 1555 } 1556 } 1557 1558 private boolean isPackageInstalled(String pkg, int userId) { 1559 final ApplicationInfo info = mPm.getApplicationInfo(pkg, 1560 PackageManager.GET_UNINSTALLED_PACKAGES, 1561 userId); 1562 if (info == null || (info.flags&ApplicationInfo.FLAG_INSTALLED) == 0) { 1563 return false; 1564 } 1565 return true; 1566 } 1567 1568 /** 1569 * Removes all the restrictions files (res_<packagename>) for a given user. 1570 * Does not do any permissions checking. 1571 */ 1572 private void cleanAppRestrictions(int userId) { 1573 synchronized (mPackagesLock) { 1574 File dir = Environment.getUserSystemDirectory(userId); 1575 String[] files = dir.list(); 1576 if (files == null) return; 1577 for (String fileName : files) { 1578 if (fileName.startsWith(RESTRICTIONS_FILE_PREFIX)) { 1579 File resFile = new File(dir, fileName); 1580 if (resFile.exists()) { 1581 resFile.delete(); 1582 } 1583 } 1584 } 1585 } 1586 } 1587 1588 /** 1589 * Removes the app restrictions file for a specific package and user id, if it exists. 1590 */ 1591 private void cleanAppRestrictionsForPackage(String pkg, int userId) { 1592 synchronized (mPackagesLock) { 1593 File dir = Environment.getUserSystemDirectory(userId); 1594 File resFile = new File(dir, packageToRestrictionsFileName(pkg)); 1595 if (resFile.exists()) { 1596 resFile.delete(); 1597 } 1598 } 1599 } 1600 1601 @Override 1602 public UserInfo createProfileForUser(String name, int flags, int userId) { 1603 checkManageUsersPermission("Only the system can create users"); 1604 return createUserInternal(name, flags, userId); 1605 } 1606 1607 @Override 1608 public UserInfo createUser(String name, int flags) { 1609 checkManageUsersPermission("Only the system can create users"); 1610 return createUserInternal(name, flags, UserHandle.USER_NULL); 1611 } 1612 1613 private UserInfo createUserInternal(String name, int flags, int parentId) { 1614 if (hasUserRestriction(UserManager.DISALLOW_ADD_USER, UserHandle.getCallingUserId())) { 1615 Log.w(LOG_TAG, "Cannot add user. DISALLOW_ADD_USER is enabled."); 1616 return null; 1617 } 1618 if (ActivityManager.isLowRamDeviceStatic()) { 1619 return null; 1620 } 1621 final boolean isGuest = (flags & UserInfo.FLAG_GUEST) != 0; 1622 final boolean isManagedProfile = (flags & UserInfo.FLAG_MANAGED_PROFILE) != 0; 1623 final boolean isRestricted = (flags & UserInfo.FLAG_RESTRICTED) != 0; 1624 final long ident = Binder.clearCallingIdentity(); 1625 UserInfo userInfo; 1626 final int userId; 1627 try { 1628 synchronized (mPackagesLock) { 1629 UserInfo parent = null; 1630 if (parentId != UserHandle.USER_NULL) { 1631 synchronized (mUsersLock) { 1632 parent = getUserInfoLU(parentId); 1633 } 1634 if (parent == null) return null; 1635 } 1636 if (isManagedProfile && !canAddMoreManagedProfiles(parentId, false)) { 1637 Log.e(LOG_TAG, "Cannot add more managed profiles for user " + parentId); 1638 return null; 1639 } 1640 if (!isGuest && !isManagedProfile && isUserLimitReached()) { 1641 // If we're not adding a guest user or a managed profile and the limit has 1642 // been reached, cannot add a user. 1643 return null; 1644 } 1645 // If we're adding a guest and there already exists one, bail. 1646 if (isGuest && findCurrentGuestUser() != null) { 1647 return null; 1648 } 1649 // In legacy mode, restricted profile's parent can only be the owner user 1650 if (isRestricted && !UserManager.isSplitSystemUser() 1651 && (parentId != UserHandle.USER_SYSTEM)) { 1652 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be owner"); 1653 return null; 1654 } 1655 if (isRestricted && UserManager.isSplitSystemUser()) { 1656 if (parent == null) { 1657 Log.w(LOG_TAG, "Cannot add restricted profile - parent user must be " 1658 + "specified"); 1659 return null; 1660 } 1661 if (!parent.canHaveProfile()) { 1662 Log.w(LOG_TAG, "Cannot add restricted profile - profiles cannot be " 1663 + "created for the specified parent user id " + parentId); 1664 return null; 1665 } 1666 } 1667 // In split system user mode, we assign the first human user the primary flag. 1668 // And if there is no device owner, we also assign the admin flag to primary user. 1669 if (UserManager.isSplitSystemUser() 1670 && !isGuest && !isManagedProfile && getPrimaryUser() == null) { 1671 flags |= UserInfo.FLAG_PRIMARY; 1672 synchronized (mUsersLock) { 1673 if (!mIsDeviceManaged) { 1674 flags |= UserInfo.FLAG_ADMIN; 1675 } 1676 } 1677 } 1678 1679 if (parent != null && parent.isEphemeral()) { 1680 flags |= UserInfo.FLAG_EPHEMERAL; 1681 } 1682 userId = getNextAvailableId(); 1683 userInfo = new UserInfo(userId, name, null, flags); 1684 userInfo.serialNumber = mNextSerialNumber++; 1685 long now = System.currentTimeMillis(); 1686 userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; 1687 userInfo.partial = true; 1688 Environment.getUserSystemDirectory(userInfo.id).mkdirs(); 1689 synchronized (mUsersLock) { 1690 mUsers.put(userId, userInfo); 1691 } 1692 writeUserListLP(); 1693 if (parent != null) { 1694 if (isManagedProfile) { 1695 if (parent.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID) { 1696 parent.profileGroupId = parent.id; 1697 writeUserLP(parent); 1698 } 1699 userInfo.profileGroupId = parent.profileGroupId; 1700 } else if (isRestricted) { 1701 if (parent.restrictedProfileParentId == UserInfo.NO_PROFILE_GROUP_ID) { 1702 parent.restrictedProfileParentId = parent.id; 1703 writeUserLP(parent); 1704 } 1705 userInfo.restrictedProfileParentId = parent.restrictedProfileParentId; 1706 } 1707 } 1708 } 1709 final StorageManager storage = mContext.getSystemService(StorageManager.class); 1710 storage.createUserKey(userId, userInfo.serialNumber, userInfo.isEphemeral()); 1711 for (VolumeInfo vol : storage.getWritablePrivateVolumes()) { 1712 final String volumeUuid = vol.getFsUuid(); 1713 try { 1714 final File userDir = Environment.getDataUserDirectory(volumeUuid, userId); 1715 storage.prepareUserStorage( 1716 volumeUuid, userId, userInfo.serialNumber, userInfo.isEphemeral()); 1717 enforceSerialNumber(userDir, userInfo.serialNumber); 1718 } catch (IOException e) { 1719 Log.wtf(LOG_TAG, "Failed to create user directory on " + volumeUuid, e); 1720 } 1721 } 1722 mPm.createNewUser(userId); 1723 userInfo.partial = false; 1724 synchronized (mPackagesLock) { 1725 writeUserLP(userInfo); 1726 } 1727 updateUserIds(); 1728 Bundle restrictions = new Bundle(); 1729 if (isGuest) { 1730 synchronized (mGuestRestrictions) { 1731 restrictions.putAll(mGuestRestrictions); 1732 } 1733 } 1734 synchronized (mRestrictionsLock) { 1735 mBaseUserRestrictions.append(userId, restrictions); 1736 } 1737 mPm.newUserCreated(userId); 1738 Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); 1739 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); 1740 mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, 1741 android.Manifest.permission.MANAGE_USERS); 1742 } finally { 1743 Binder.restoreCallingIdentity(ident); 1744 } 1745 return userInfo; 1746 } 1747 1748 /** 1749 * @hide 1750 */ 1751 public UserInfo createRestrictedProfile(String name, int parentUserId) { 1752 checkManageUsersPermission("setupRestrictedProfile"); 1753 final UserInfo user = createProfileForUser(name, UserInfo.FLAG_RESTRICTED, parentUserId); 1754 if (user == null) { 1755 return null; 1756 } 1757 setUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS, true, user.id); 1758 // Change the setting before applying the DISALLOW_SHARE_LOCATION restriction, otherwise 1759 // the putIntForUser() will fail. 1760 android.provider.Settings.Secure.putIntForUser(mContext.getContentResolver(), 1761 android.provider.Settings.Secure.LOCATION_MODE, 1762 android.provider.Settings.Secure.LOCATION_MODE_OFF, user.id); 1763 setUserRestriction(UserManager.DISALLOW_SHARE_LOCATION, true, user.id); 1764 return user; 1765 } 1766 1767 /** 1768 * Find the current guest user. If the Guest user is partial, 1769 * then do not include it in the results as it is about to die. 1770 */ 1771 private UserInfo findCurrentGuestUser() { 1772 synchronized (mUsersLock) { 1773 final int size = mUsers.size(); 1774 for (int i = 0; i < size; i++) { 1775 final UserInfo user = mUsers.valueAt(i); 1776 if (user.isGuest() && !user.guestToRemove && !mRemovingUserIds.get(user.id)) { 1777 return user; 1778 } 1779 } 1780 } 1781 return null; 1782 } 1783 1784 /** 1785 * Mark this guest user for deletion to allow us to create another guest 1786 * and switch to that user before actually removing this guest. 1787 * @param userHandle the userid of the current guest 1788 * @return whether the user could be marked for deletion 1789 */ 1790 public boolean markGuestForDeletion(int userHandle) { 1791 checkManageUsersPermission("Only the system can remove users"); 1792 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1793 UserManager.DISALLOW_REMOVE_USER, false)) { 1794 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1795 return false; 1796 } 1797 1798 long ident = Binder.clearCallingIdentity(); 1799 try { 1800 final UserInfo user; 1801 synchronized (mPackagesLock) { 1802 synchronized (mUsersLock) { 1803 user = mUsers.get(userHandle); 1804 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1805 return false; 1806 } 1807 } 1808 if (!user.isGuest()) { 1809 return false; 1810 } 1811 // We set this to a guest user that is to be removed. This is a temporary state 1812 // where we are allowed to add new Guest users, even if this one is still not 1813 // removed. This user will still show up in getUserInfo() calls. 1814 // If we don't get around to removing this Guest user, it will be purged on next 1815 // startup. 1816 user.guestToRemove = true; 1817 // Mark it as disabled, so that it isn't returned any more when 1818 // profiles are queried. 1819 user.flags |= UserInfo.FLAG_DISABLED; 1820 writeUserLP(user); 1821 } 1822 } finally { 1823 Binder.restoreCallingIdentity(ident); 1824 } 1825 return true; 1826 } 1827 1828 /** 1829 * Removes a user and all data directories created for that user. This method should be called 1830 * after the user's processes have been terminated. 1831 * @param userHandle the user's id 1832 */ 1833 public boolean removeUser(int userHandle) { 1834 checkManageUsersPermission("Only the system can remove users"); 1835 if (getUserRestrictions(UserHandle.getCallingUserId()).getBoolean( 1836 UserManager.DISALLOW_REMOVE_USER, false)) { 1837 Log.w(LOG_TAG, "Cannot remove user. DISALLOW_REMOVE_USER is enabled."); 1838 return false; 1839 } 1840 1841 long ident = Binder.clearCallingIdentity(); 1842 try { 1843 final UserInfo user; 1844 int currentUser = ActivityManager.getCurrentUser(); 1845 if (currentUser == userHandle) { 1846 Log.w(LOG_TAG, "Current user cannot be removed"); 1847 return false; 1848 } 1849 synchronized (mPackagesLock) { 1850 synchronized (mUsersLock) { 1851 user = mUsers.get(userHandle); 1852 if (userHandle == 0 || user == null || mRemovingUserIds.get(userHandle)) { 1853 return false; 1854 } 1855 1856 // We remember deleted user IDs to prevent them from being 1857 // reused during the current boot; they can still be reused 1858 // after a reboot. 1859 mRemovingUserIds.put(userHandle, true); 1860 } 1861 1862 try { 1863 mAppOpsService.removeUser(userHandle); 1864 } catch (RemoteException e) { 1865 Log.w(LOG_TAG, "Unable to notify AppOpsService of removing user", e); 1866 } 1867 // Set this to a partially created user, so that the user will be purged 1868 // on next startup, in case the runtime stops now before stopping and 1869 // removing the user completely. 1870 user.partial = true; 1871 // Mark it as disabled, so that it isn't returned any more when 1872 // profiles are queried. 1873 user.flags |= UserInfo.FLAG_DISABLED; 1874 writeUserLP(user); 1875 } 1876 1877 if (user.profileGroupId != UserInfo.NO_PROFILE_GROUP_ID 1878 && user.isManagedProfile()) { 1879 // Send broadcast to notify system that the user removed was a 1880 // managed user. 1881 sendProfileRemovedBroadcast(user.profileGroupId, user.id); 1882 } 1883 1884 if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); 1885 int res; 1886 try { 1887 res = ActivityManagerNative.getDefault().stopUser(userHandle, /* force= */ true, 1888 new IStopUserCallback.Stub() { 1889 @Override 1890 public void userStopped(int userId) { 1891 finishRemoveUser(userId); 1892 } 1893 @Override 1894 public void userStopAborted(int userId) { 1895 } 1896 }); 1897 } catch (RemoteException e) { 1898 return false; 1899 } 1900 return res == ActivityManager.USER_OP_SUCCESS; 1901 } finally { 1902 Binder.restoreCallingIdentity(ident); 1903 } 1904 } 1905 1906 void finishRemoveUser(final int userHandle) { 1907 if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); 1908 // Let other services shutdown any activity and clean up their state before completely 1909 // wiping the user's system directory and removing from the user list 1910 long ident = Binder.clearCallingIdentity(); 1911 try { 1912 Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); 1913 addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); 1914 mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, 1915 android.Manifest.permission.MANAGE_USERS, 1916 1917 new BroadcastReceiver() { 1918 @Override 1919 public void onReceive(Context context, Intent intent) { 1920 if (DBG) { 1921 Slog.i(LOG_TAG, 1922 "USER_REMOVED broadcast sent, cleaning up user data " 1923 + userHandle); 1924 } 1925 new Thread() { 1926 public void run() { 1927 // Clean up any ActivityManager state 1928 LocalServices.getService(ActivityManagerInternal.class) 1929 .onUserRemoved(userHandle); 1930 removeUserState(userHandle); 1931 } 1932 }.start(); 1933 } 1934 }, 1935 1936 null, Activity.RESULT_OK, null, null); 1937 } finally { 1938 Binder.restoreCallingIdentity(ident); 1939 } 1940 } 1941 1942 private void removeUserState(final int userHandle) { 1943 mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle); 1944 // Cleanup package manager settings 1945 mPm.cleanUpUser(this, userHandle); 1946 1947 // Remove this user from the list 1948 synchronized (mUsersLock) { 1949 mUsers.remove(userHandle); 1950 mIsUserManaged.delete(userHandle); 1951 } 1952 synchronized (mRestrictionsLock) { 1953 mBaseUserRestrictions.remove(userHandle); 1954 mAppliedUserRestrictions.remove(userHandle); 1955 mCachedEffectiveUserRestrictions.remove(userHandle); 1956 mDevicePolicyLocalUserRestrictions.remove(userHandle); 1957 } 1958 // Remove user file 1959 AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + XML_SUFFIX)); 1960 userFile.delete(); 1961 // Update the user list 1962 synchronized (mPackagesLock) { 1963 writeUserListLP(); 1964 } 1965 updateUserIds(); 1966 removeDirectoryRecursive(Environment.getUserSystemDirectory(userHandle)); 1967 } 1968 1969 private void removeDirectoryRecursive(File parent) { 1970 if (parent.isDirectory()) { 1971 String[] files = parent.list(); 1972 for (String filename : files) { 1973 File child = new File(parent, filename); 1974 removeDirectoryRecursive(child); 1975 } 1976 } 1977 parent.delete(); 1978 } 1979 1980 private void sendProfileRemovedBroadcast(int parentUserId, int removedUserId) { 1981 Intent managedProfileIntent = new Intent(Intent.ACTION_MANAGED_PROFILE_REMOVED); 1982 managedProfileIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY | 1983 Intent.FLAG_RECEIVER_FOREGROUND); 1984 managedProfileIntent.putExtra(Intent.EXTRA_USER, new UserHandle(removedUserId)); 1985 mContext.sendBroadcastAsUser(managedProfileIntent, new UserHandle(parentUserId), null); 1986 } 1987 1988 @Override 1989 public Bundle getApplicationRestrictions(String packageName) { 1990 return getApplicationRestrictionsForUser(packageName, UserHandle.getCallingUserId()); 1991 } 1992 1993 @Override 1994 public Bundle getApplicationRestrictionsForUser(String packageName, int userId) { 1995 if (UserHandle.getCallingUserId() != userId 1996 || !UserHandle.isSameApp(Binder.getCallingUid(), getUidForPackage(packageName))) { 1997 checkManageUsersPermission("get application restrictions for other users/apps"); 1998 } 1999 synchronized (mPackagesLock) { 2000 // Read the restrictions from XML 2001 return readApplicationRestrictionsLP(packageName, userId); 2002 } 2003 } 2004 2005 @Override 2006 public void setApplicationRestrictions(String packageName, Bundle restrictions, 2007 int userId) { 2008 checkManageUsersPermission("set application restrictions"); 2009 synchronized (mPackagesLock) { 2010 if (restrictions == null || restrictions.isEmpty()) { 2011 cleanAppRestrictionsForPackage(packageName, userId); 2012 } else { 2013 // Write the restrictions to XML 2014 writeApplicationRestrictionsLP(packageName, restrictions, userId); 2015 } 2016 } 2017 2018 if (isPackageInstalled(packageName, userId)) { 2019 // Notify package of changes via an intent - only sent to explicitly registered receivers. 2020 Intent changeIntent = new Intent(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED); 2021 changeIntent.setPackage(packageName); 2022 changeIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 2023 mContext.sendBroadcastAsUser(changeIntent, new UserHandle(userId)); 2024 } 2025 } 2026 2027 private void unhideAllInstalledAppsForUser(final int userHandle) { 2028 mHandler.post(new Runnable() { 2029 @Override 2030 public void run() { 2031 List<ApplicationInfo> apps = 2032 mPm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES, 2033 userHandle).getList(); 2034 final long ident = Binder.clearCallingIdentity(); 2035 try { 2036 for (ApplicationInfo appInfo : apps) { 2037 if ((appInfo.flags & ApplicationInfo.FLAG_INSTALLED) != 0 2038 && (appInfo.privateFlags & ApplicationInfo.PRIVATE_FLAG_HIDDEN) 2039 != 0) { 2040 mPm.setApplicationHiddenSettingAsUser(appInfo.packageName, false, 2041 userHandle); 2042 } 2043 } 2044 } finally { 2045 Binder.restoreCallingIdentity(ident); 2046 } 2047 } 2048 }); 2049 } 2050 private int getUidForPackage(String packageName) { 2051 long ident = Binder.clearCallingIdentity(); 2052 try { 2053 return mContext.getPackageManager().getApplicationInfo(packageName, 2054 PackageManager.GET_UNINSTALLED_PACKAGES).uid; 2055 } catch (NameNotFoundException nnfe) { 2056 return -1; 2057 } finally { 2058 Binder.restoreCallingIdentity(ident); 2059 } 2060 } 2061 2062 private Bundle readApplicationRestrictionsLP(String packageName, int userId) { 2063 AtomicFile restrictionsFile = 2064 new AtomicFile(new File(Environment.getUserSystemDirectory(userId), 2065 packageToRestrictionsFileName(packageName))); 2066 return readApplicationRestrictionsLP(restrictionsFile); 2067 } 2068 2069 @VisibleForTesting 2070 static Bundle readApplicationRestrictionsLP(AtomicFile restrictionsFile) { 2071 final Bundle restrictions = new Bundle(); 2072 final ArrayList<String> values = new ArrayList<>(); 2073 if (!restrictionsFile.getBaseFile().exists()) { 2074 return restrictions; 2075 } 2076 2077 FileInputStream fis = null; 2078 try { 2079 fis = restrictionsFile.openRead(); 2080 XmlPullParser parser = Xml.newPullParser(); 2081 parser.setInput(fis, StandardCharsets.UTF_8.name()); 2082 XmlUtils.nextElement(parser); 2083 if (parser.getEventType() != XmlPullParser.START_TAG) { 2084 Slog.e(LOG_TAG, "Unable to read restrictions file " 2085 + restrictionsFile.getBaseFile()); 2086 return restrictions; 2087 } 2088 while (parser.next() != XmlPullParser.END_DOCUMENT) { 2089 readEntry(restrictions, values, parser); 2090 } 2091 } catch (IOException|XmlPullParserException e) { 2092 Log.w(LOG_TAG, "Error parsing " + restrictionsFile.getBaseFile(), e); 2093 } finally { 2094 IoUtils.closeQuietly(fis); 2095 } 2096 return restrictions; 2097 } 2098 2099 private static void readEntry(Bundle restrictions, ArrayList<String> values, 2100 XmlPullParser parser) throws XmlPullParserException, IOException { 2101 int type = parser.getEventType(); 2102 if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_ENTRY)) { 2103 String key = parser.getAttributeValue(null, ATTR_KEY); 2104 String valType = parser.getAttributeValue(null, ATTR_VALUE_TYPE); 2105 String multiple = parser.getAttributeValue(null, ATTR_MULTIPLE); 2106 if (multiple != null) { 2107 values.clear(); 2108 int count = Integer.parseInt(multiple); 2109 while (count > 0 && (type = parser.next()) != XmlPullParser.END_DOCUMENT) { 2110 if (type == XmlPullParser.START_TAG 2111 && parser.getName().equals(TAG_VALUE)) { 2112 values.add(parser.nextText().trim()); 2113 count--; 2114 } 2115 } 2116 String [] valueStrings = new String[values.size()]; 2117 values.toArray(valueStrings); 2118 restrictions.putStringArray(key, valueStrings); 2119 } else if (ATTR_TYPE_BUNDLE.equals(valType)) { 2120 restrictions.putBundle(key, readBundleEntry(parser, values)); 2121 } else if (ATTR_TYPE_BUNDLE_ARRAY.equals(valType)) { 2122 final int outerDepth = parser.getDepth(); 2123 ArrayList<Bundle> bundleList = new ArrayList<>(); 2124 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2125 Bundle childBundle = readBundleEntry(parser, values); 2126 bundleList.add(childBundle); 2127 } 2128 restrictions.putParcelableArray(key, 2129 bundleList.toArray(new Bundle[bundleList.size()])); 2130 } else { 2131 String value = parser.nextText().trim(); 2132 if (ATTR_TYPE_BOOLEAN.equals(valType)) { 2133 restrictions.putBoolean(key, Boolean.parseBoolean(value)); 2134 } else if (ATTR_TYPE_INTEGER.equals(valType)) { 2135 restrictions.putInt(key, Integer.parseInt(value)); 2136 } else { 2137 restrictions.putString(key, value); 2138 } 2139 } 2140 } 2141 } 2142 2143 private static Bundle readBundleEntry(XmlPullParser parser, ArrayList<String> values) 2144 throws IOException, XmlPullParserException { 2145 Bundle childBundle = new Bundle(); 2146 final int outerDepth = parser.getDepth(); 2147 while (XmlUtils.nextElementWithin(parser, outerDepth)) { 2148 readEntry(childBundle, values, parser); 2149 } 2150 return childBundle; 2151 } 2152 2153 private void writeApplicationRestrictionsLP(String packageName, 2154 Bundle restrictions, int userId) { 2155 AtomicFile restrictionsFile = new AtomicFile( 2156 new File(Environment.getUserSystemDirectory(userId), 2157 packageToRestrictionsFileName(packageName))); 2158 writeApplicationRestrictionsLP(restrictions, restrictionsFile); 2159 } 2160 2161 @VisibleForTesting 2162 static void writeApplicationRestrictionsLP(Bundle restrictions, AtomicFile restrictionsFile) { 2163 FileOutputStream fos = null; 2164 try { 2165 fos = restrictionsFile.startWrite(); 2166 final BufferedOutputStream bos = new BufferedOutputStream(fos); 2167 2168 final XmlSerializer serializer = new FastXmlSerializer(); 2169 serializer.setOutput(bos, StandardCharsets.UTF_8.name()); 2170 serializer.startDocument(null, true); 2171 serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 2172 2173 serializer.startTag(null, TAG_RESTRICTIONS); 2174 writeBundle(restrictions, serializer); 2175 serializer.endTag(null, TAG_RESTRICTIONS); 2176 2177 serializer.endDocument(); 2178 restrictionsFile.finishWrite(fos); 2179 } catch (Exception e) { 2180 restrictionsFile.failWrite(fos); 2181 Slog.e(LOG_TAG, "Error writing application restrictions list", e); 2182 } 2183 } 2184 2185 private static void writeBundle(Bundle restrictions, XmlSerializer serializer) 2186 throws IOException { 2187 for (String key : restrictions.keySet()) { 2188 Object value = restrictions.get(key); 2189 serializer.startTag(null, TAG_ENTRY); 2190 serializer.attribute(null, ATTR_KEY, key); 2191 2192 if (value instanceof Boolean) { 2193 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BOOLEAN); 2194 serializer.text(value.toString()); 2195 } else if (value instanceof Integer) { 2196 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_INTEGER); 2197 serializer.text(value.toString()); 2198 } else if (value == null || value instanceof String) { 2199 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING); 2200 serializer.text(value != null ? (String) value : ""); 2201 } else if (value instanceof Bundle) { 2202 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2203 writeBundle((Bundle) value, serializer); 2204 } else if (value instanceof Parcelable[]) { 2205 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE_ARRAY); 2206 Parcelable[] array = (Parcelable[]) value; 2207 for (Parcelable parcelable : array) { 2208 if (!(parcelable instanceof Bundle)) { 2209 throw new IllegalArgumentException("bundle-array can only hold Bundles"); 2210 } 2211 serializer.startTag(null, TAG_ENTRY); 2212 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_BUNDLE); 2213 writeBundle((Bundle) parcelable, serializer); 2214 serializer.endTag(null, TAG_ENTRY); 2215 } 2216 } else { 2217 serializer.attribute(null, ATTR_VALUE_TYPE, ATTR_TYPE_STRING_ARRAY); 2218 String[] values = (String[]) value; 2219 serializer.attribute(null, ATTR_MULTIPLE, Integer.toString(values.length)); 2220 for (String choice : values) { 2221 serializer.startTag(null, TAG_VALUE); 2222 serializer.text(choice != null ? choice : ""); 2223 serializer.endTag(null, TAG_VALUE); 2224 } 2225 } 2226 serializer.endTag(null, TAG_ENTRY); 2227 } 2228 } 2229 2230 @Override 2231 public int getUserSerialNumber(int userHandle) { 2232 synchronized (mUsersLock) { 2233 if (!exists(userHandle)) return -1; 2234 return getUserInfoLU(userHandle).serialNumber; 2235 } 2236 } 2237 2238 @Override 2239 public int getUserHandle(int userSerialNumber) { 2240 synchronized (mUsersLock) { 2241 for (int userId : mUserIds) { 2242 UserInfo info = getUserInfoLU(userId); 2243 if (info != null && info.serialNumber == userSerialNumber) return userId; 2244 } 2245 // Not found 2246 return -1; 2247 } 2248 } 2249 2250 @Override 2251 public long getUserCreationTime(int userHandle) { 2252 int callingUserId = UserHandle.getCallingUserId(); 2253 UserInfo userInfo = null; 2254 synchronized (mUsersLock) { 2255 if (callingUserId == userHandle) { 2256 userInfo = getUserInfoLU(userHandle); 2257 } else { 2258 UserInfo parent = getProfileParentLU(userHandle); 2259 if (parent != null && parent.id == callingUserId) { 2260 userInfo = getUserInfoLU(userHandle); 2261 } 2262 } 2263 } 2264 if (userInfo == null) { 2265 throw new SecurityException("userHandle can only be the calling user or a managed " 2266 + "profile associated with this user"); 2267 } 2268 return userInfo.creationTime; 2269 } 2270 2271 /** 2272 * Caches the list of user ids in an array, adjusting the array size when necessary. 2273 */ 2274 private void updateUserIds() { 2275 int num = 0; 2276 synchronized (mUsersLock) { 2277 final int userSize = mUsers.size(); 2278 for (int i = 0; i < userSize; i++) { 2279 if (!mUsers.valueAt(i).partial) { 2280 num++; 2281 } 2282 } 2283 final int[] newUsers = new int[num]; 2284 int n = 0; 2285 for (int i = 0; i < userSize; i++) { 2286 if (!mUsers.valueAt(i).partial) { 2287 newUsers[n++] = mUsers.keyAt(i); 2288 } 2289 } 2290 mUserIds = newUsers; 2291 } 2292 } 2293 2294 /** 2295 * Called right before a user starts. This will not be called for the system user. 2296 */ 2297 public void onBeforeStartUser(int userId) { 2298 synchronized (mRestrictionsLock) { 2299 applyUserRestrictionsLR(userId); 2300 } 2301 } 2302 2303 /** 2304 * Make a note of the last started time of a user and do some cleanup. 2305 * @param userId the user that was just foregrounded 2306 */ 2307 public void onUserForeground(int userId) { 2308 UserInfo user = getUserInfoNoChecks(userId); 2309 if (user == null || user.partial) { 2310 Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); 2311 return; 2312 } 2313 long now = System.currentTimeMillis(); 2314 if (now > EPOCH_PLUS_30_YEARS) { 2315 user.lastLoggedInTime = now; 2316 scheduleWriteUser(user); 2317 } 2318 } 2319 2320 /** 2321 * Returns the next available user id, filling in any holes in the ids. 2322 * TODO: May not be a good idea to recycle ids, in case it results in confusion 2323 * for data and battery stats collection, or unexpected cross-talk. 2324 */ 2325 private int getNextAvailableId() { 2326 synchronized (mUsersLock) { 2327 int i = MIN_USER_ID; 2328 while (i < MAX_USER_ID) { 2329 if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { 2330 return i; 2331 } 2332 i++; 2333 } 2334 } 2335 throw new IllegalStateException("No user id available!"); 2336 } 2337 2338 private String packageToRestrictionsFileName(String packageName) { 2339 return RESTRICTIONS_FILE_PREFIX + packageName + XML_SUFFIX; 2340 } 2341 2342 /** 2343 * Enforce that serial number stored in user directory inode matches the 2344 * given expected value. Gracefully sets the serial number if currently 2345 * undefined. 2346 * 2347 * @throws IOException when problem extracting serial number, or serial 2348 * number is mismatched. 2349 */ 2350 public static void enforceSerialNumber(File file, int serialNumber) throws IOException { 2351 final int foundSerial = getSerialNumber(file); 2352 Slog.v(LOG_TAG, "Found " + file + " with serial number " + foundSerial); 2353 2354 if (foundSerial == -1) { 2355 Slog.d(LOG_TAG, "Serial number missing on " + file + "; assuming current is valid"); 2356 try { 2357 setSerialNumber(file, serialNumber); 2358 } catch (IOException e) { 2359 Slog.w(LOG_TAG, "Failed to set serial number on " + file, e); 2360 } 2361 2362 } else if (foundSerial != serialNumber) { 2363 throw new IOException("Found serial number " + foundSerial 2364 + " doesn't match expected " + serialNumber); 2365 } 2366 } 2367 2368 /** 2369 * Set serial number stored in user directory inode. 2370 * 2371 * @throws IOException if serial number was already set 2372 */ 2373 private static void setSerialNumber(File file, int serialNumber) 2374 throws IOException { 2375 try { 2376 final byte[] buf = Integer.toString(serialNumber).getBytes(StandardCharsets.UTF_8); 2377 Os.setxattr(file.getAbsolutePath(), XATTR_SERIAL, buf, OsConstants.XATTR_CREATE); 2378 } catch (ErrnoException e) { 2379 throw e.rethrowAsIOException(); 2380 } 2381 } 2382 2383 /** 2384 * Return serial number stored in user directory inode. 2385 * 2386 * @return parsed serial number, or -1 if not set 2387 */ 2388 private static int getSerialNumber(File file) throws IOException { 2389 try { 2390 final byte[] buf = new byte[256]; 2391 final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf); 2392 final String serial = new String(buf, 0, len); 2393 try { 2394 return Integer.parseInt(serial); 2395 } catch (NumberFormatException e) { 2396 throw new IOException("Bad serial number: " + serial); 2397 } 2398 } catch (ErrnoException e) { 2399 if (e.errno == OsConstants.ENODATA) { 2400 return -1; 2401 } else { 2402 throw e.rethrowAsIOException(); 2403 } 2404 } 2405 } 2406 2407 @Override 2408 public void onShellCommand(FileDescriptor in, FileDescriptor out, 2409 FileDescriptor err, String[] args, ResultReceiver resultReceiver) { 2410 (new Shell()).exec(this, in, out, err, args, resultReceiver); 2411 } 2412 2413 int onShellCommand(Shell shell, String cmd) { 2414 if (cmd == null) { 2415 return shell.handleDefaultCommands(cmd); 2416 } 2417 2418 final PrintWriter pw = shell.getOutPrintWriter(); 2419 try { 2420 switch(cmd) { 2421 case "list": 2422 return runList(pw); 2423 } 2424 } catch (RemoteException e) { 2425 pw.println("Remote exception: " + e); 2426 } 2427 return -1; 2428 } 2429 2430 private int runList(PrintWriter pw) throws RemoteException { 2431 final IActivityManager am = ActivityManagerNative.getDefault(); 2432 final List<UserInfo> users = getUsers(false); 2433 if (users == null) { 2434 pw.println("Error: couldn't get users"); 2435 return 1; 2436 } else { 2437 pw.println("Users:"); 2438 for (int i = 0; i < users.size(); i++) { 2439 String running = am.isUserRunning(users.get(i).id, 0) ? " running" : ""; 2440 pw.println("\t" + users.get(i).toString() + running); 2441 } 2442 return 0; 2443 } 2444 } 2445 2446 @Override 2447 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2448 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2449 != PackageManager.PERMISSION_GRANTED) { 2450 pw.println("Permission Denial: can't dump UserManager from from pid=" 2451 + Binder.getCallingPid() 2452 + ", uid=" + Binder.getCallingUid() 2453 + " without permission " 2454 + android.Manifest.permission.DUMP); 2455 return; 2456 } 2457 2458 long now = System.currentTimeMillis(); 2459 StringBuilder sb = new StringBuilder(); 2460 synchronized (mPackagesLock) { 2461 synchronized (mUsersLock) { 2462 pw.println("Users:"); 2463 for (int i = 0; i < mUsers.size(); i++) { 2464 UserInfo user = mUsers.valueAt(i); 2465 if (user == null) { 2466 continue; 2467 } 2468 final int userId = user.id; 2469 pw.print(" "); pw.print(user); 2470 pw.print(" serialNo="); pw.print(user.serialNumber); 2471 if (mRemovingUserIds.get(userId)) { 2472 pw.print(" <removing> "); 2473 } 2474 if (user.partial) { 2475 pw.print(" <partial>"); 2476 } 2477 pw.println(); 2478 pw.print(" Created: "); 2479 if (user.creationTime == 0) { 2480 pw.println("<unknown>"); 2481 } else { 2482 sb.setLength(0); 2483 TimeUtils.formatDuration(now - user.creationTime, sb); 2484 sb.append(" ago"); 2485 pw.println(sb); 2486 } 2487 pw.print(" Last logged in: "); 2488 if (user.lastLoggedInTime == 0) { 2489 pw.println("<unknown>"); 2490 } else { 2491 sb.setLength(0); 2492 TimeUtils.formatDuration(now - user.lastLoggedInTime, sb); 2493 sb.append(" ago"); 2494 pw.println(sb); 2495 } 2496 pw.print(" Has profile owner: "); 2497 pw.println(mIsUserManaged.get(userId)); 2498 pw.println(" Restrictions:"); 2499 synchronized (mRestrictionsLock) { 2500 UserRestrictionsUtils.dumpRestrictions( 2501 pw, " ", mBaseUserRestrictions.get(user.id)); 2502 pw.println(" Device policy local restrictions:"); 2503 UserRestrictionsUtils.dumpRestrictions( 2504 pw, " ", mDevicePolicyLocalUserRestrictions.get(user.id)); 2505 pw.println(" Effective restrictions:"); 2506 UserRestrictionsUtils.dumpRestrictions( 2507 pw, " ", mCachedEffectiveUserRestrictions.get(user.id)); 2508 } 2509 pw.println(); 2510 } 2511 } 2512 pw.println(" Device policy global restrictions:"); 2513 synchronized (mRestrictionsLock) { 2514 UserRestrictionsUtils 2515 .dumpRestrictions(pw, " ", mDevicePolicyGlobalUserRestrictions); 2516 } 2517 pw.println(); 2518 pw.println(" Guest restrictions:"); 2519 synchronized (mGuestRestrictions) { 2520 UserRestrictionsUtils.dumpRestrictions(pw, " ", mGuestRestrictions); 2521 } 2522 synchronized (mUsersLock) { 2523 pw.println(); 2524 pw.println(" Device managed: " + mIsDeviceManaged); 2525 } 2526 } 2527 } 2528 2529 final class MainHandler extends Handler { 2530 2531 @Override 2532 public void handleMessage(Message msg) { 2533 switch (msg.what) { 2534 case WRITE_USER_MSG: 2535 removeMessages(WRITE_USER_MSG, msg.obj); 2536 synchronized (mPackagesLock) { 2537 int userId = ((UserInfo) msg.obj).id; 2538 UserInfo userInfo = getUserInfoNoChecks(userId); 2539 if (userInfo != null) { 2540 writeUserLP(userInfo); 2541 } 2542 } 2543 } 2544 } 2545 } 2546 2547 /** 2548 * @param userId 2549 * @return whether the user has been initialized yet 2550 */ 2551 boolean isInitialized(int userId) { 2552 return (getUserInfo(userId).flags & UserInfo.FLAG_INITIALIZED) != 0; 2553 } 2554 2555 private class LocalService extends UserManagerInternal { 2556 @Override 2557 public void setDevicePolicyUserRestrictions(int userId, @NonNull Bundle localRestrictions, 2558 @Nullable Bundle globalRestrictions) { 2559 UserManagerService.this.setDevicePolicyUserRestrictions(userId, localRestrictions, 2560 globalRestrictions); 2561 } 2562 2563 @Override 2564 public Bundle getBaseUserRestrictions(int userId) { 2565 synchronized (mRestrictionsLock) { 2566 return mBaseUserRestrictions.get(userId); 2567 } 2568 } 2569 2570 @Override 2571 public void setBaseUserRestrictionsByDpmsForMigration( 2572 int userId, Bundle baseRestrictions) { 2573 synchronized (mRestrictionsLock) { 2574 mBaseUserRestrictions.put(userId, new Bundle(baseRestrictions)); 2575 invalidateEffectiveUserRestrictionsLR(userId); 2576 } 2577 2578 final UserInfo userInfo = getUserInfoNoChecks(userId); 2579 synchronized (mPackagesLock) { 2580 if (userInfo != null) { 2581 writeUserLP(userInfo); 2582 } else { 2583 Slog.w(LOG_TAG, "UserInfo not found for " + userId); 2584 } 2585 } 2586 } 2587 2588 @Override 2589 public boolean getUserRestriction(int userId, String key) { 2590 return getUserRestrictions(userId).getBoolean(key); 2591 } 2592 2593 @Override 2594 public void addUserRestrictionsListener(UserRestrictionsListener listener) { 2595 synchronized (mUserRestrictionsListeners) { 2596 mUserRestrictionsListeners.add(listener); 2597 } 2598 } 2599 2600 @Override 2601 public void removeUserRestrictionsListener(UserRestrictionsListener listener) { 2602 synchronized (mUserRestrictionsListeners) { 2603 mUserRestrictionsListeners.remove(listener); 2604 } 2605 } 2606 2607 @Override 2608 public void setDeviceManaged(boolean isManaged) { 2609 synchronized (mUsersLock) { 2610 mIsDeviceManaged = isManaged; 2611 } 2612 } 2613 2614 @Override 2615 public void setUserManaged(int userId, boolean isManaged) { 2616 synchronized (mUsersLock) { 2617 mIsUserManaged.put(userId, isManaged); 2618 } 2619 } 2620 } 2621 2622 private class Shell extends ShellCommand { 2623 @Override 2624 public int onCommand(String cmd) { 2625 return onShellCommand(this, cmd); 2626 } 2627 2628 @Override 2629 public void onHelp() { 2630 final PrintWriter pw = getOutPrintWriter(); 2631 pw.println("User manager (user) commands:"); 2632 pw.println(" help"); 2633 pw.println(" Print this help text."); 2634 pw.println(""); 2635 pw.println(" list"); 2636 pw.println(" Prints all users on the system."); 2637 } 2638 } 2639 2640 private static void debug(String message) { 2641 Log.d(LOG_TAG, message + 2642 (DBG_WITH_STACKTRACE ? " called at\n" + Debug.getCallers(10, " ") : "")); 2643 } 2644} 2645