| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.pm; |
| |
| import static android.text.format.DateUtils.MINUTE_IN_MILLIS; |
| |
| import android.app.Activity; |
| import android.app.ActivityManager; |
| import android.app.ActivityManagerNative; |
| import android.app.IStopUserCallback; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.content.pm.UserInfo; |
| import android.graphics.Bitmap; |
| import android.graphics.BitmapFactory; |
| import android.os.Binder; |
| import android.os.Environment; |
| import android.os.FileUtils; |
| import android.os.Handler; |
| import android.os.IUserManager; |
| import android.os.Process; |
| import android.os.RemoteException; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.util.AtomicFile; |
| import android.util.Slog; |
| import android.util.SparseArray; |
| import android.util.SparseBooleanArray; |
| import android.util.TimeUtils; |
| import android.util.Xml; |
| |
| import com.android.internal.util.ArrayUtils; |
| import com.android.internal.util.FastXmlSerializer; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| import org.xmlpull.v1.XmlSerializer; |
| |
| import java.io.BufferedOutputStream; |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class UserManagerService extends IUserManager.Stub { |
| |
| private static final String LOG_TAG = "UserManagerService"; |
| |
| private static final boolean DBG = false; |
| |
| private static final String TAG_NAME = "name"; |
| private static final String ATTR_FLAGS = "flags"; |
| private static final String ATTR_ICON_PATH = "icon"; |
| private static final String ATTR_ID = "id"; |
| private static final String ATTR_CREATION_TIME = "created"; |
| private static final String ATTR_LAST_LOGGED_IN_TIME = "lastLoggedIn"; |
| private static final String ATTR_SERIAL_NO = "serialNumber"; |
| private static final String ATTR_NEXT_SERIAL_NO = "nextSerialNumber"; |
| private static final String ATTR_PARTIAL = "partial"; |
| private static final String ATTR_USER_VERSION = "version"; |
| private static final String TAG_USERS = "users"; |
| private static final String TAG_USER = "user"; |
| |
| private static final String USER_INFO_DIR = "system" + File.separator + "users"; |
| private static final String USER_LIST_FILENAME = "userlist.xml"; |
| private static final String USER_PHOTO_FILENAME = "photo.png"; |
| |
| private static final int MIN_USER_ID = 10; |
| |
| private static final int USER_VERSION = 1; |
| |
| private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms |
| |
| private final Context mContext; |
| private final PackageManagerService mPm; |
| private final Object mInstallLock; |
| private final Object mPackagesLock; |
| |
| private final Handler mHandler; |
| |
| private final File mUsersDir; |
| private final File mUserListFile; |
| private final File mBaseUserPath; |
| |
| private final SparseArray<UserInfo> mUsers = new SparseArray<UserInfo>(); |
| |
| /** |
| * Set of user IDs being actively removed. Removed IDs linger in this set |
| * for several seconds to work around a VFS caching issue. |
| */ |
| // @GuardedBy("mPackagesLock") |
| private final SparseBooleanArray mRemovingUserIds = new SparseBooleanArray(); |
| |
| private int[] mUserIds; |
| private boolean mGuestEnabled; |
| private int mNextSerialNumber; |
| private int mUserVersion = 0; |
| |
| private static UserManagerService sInstance; |
| |
| public static UserManagerService getInstance() { |
| synchronized (UserManagerService.class) { |
| return sInstance; |
| } |
| } |
| |
| /** |
| * Available for testing purposes. |
| */ |
| UserManagerService(File dataDir, File baseUserPath) { |
| this(null, null, new Object(), new Object(), dataDir, baseUserPath); |
| } |
| |
| /** |
| * Called by package manager to create the service. This is closely |
| * associated with the package manager, and the given lock is the |
| * package manager's own lock. |
| */ |
| UserManagerService(Context context, PackageManagerService pm, |
| Object installLock, Object packagesLock) { |
| this(context, pm, installLock, packagesLock, |
| Environment.getDataDirectory(), |
| new File(Environment.getDataDirectory(), "user")); |
| } |
| |
| /** |
| * Available for testing purposes. |
| */ |
| private UserManagerService(Context context, PackageManagerService pm, |
| Object installLock, Object packagesLock, |
| File dataDir, File baseUserPath) { |
| mContext = context; |
| mPm = pm; |
| mInstallLock = installLock; |
| mPackagesLock = packagesLock; |
| mHandler = new Handler(); |
| synchronized (mInstallLock) { |
| synchronized (mPackagesLock) { |
| mUsersDir = new File(dataDir, USER_INFO_DIR); |
| mUsersDir.mkdirs(); |
| // Make zeroth user directory, for services to migrate their files to that location |
| File userZeroDir = new File(mUsersDir, "0"); |
| userZeroDir.mkdirs(); |
| mBaseUserPath = baseUserPath; |
| FileUtils.setPermissions(mUsersDir.toString(), |
| FileUtils.S_IRWXU|FileUtils.S_IRWXG |
| |FileUtils.S_IROTH|FileUtils.S_IXOTH, |
| -1, -1); |
| mUserListFile = new File(mUsersDir, USER_LIST_FILENAME); |
| readUserListLocked(); |
| // Prune out any partially created/partially removed users. |
| ArrayList<UserInfo> partials = new ArrayList<UserInfo>(); |
| for (int i = 0; i < mUsers.size(); i++) { |
| UserInfo ui = mUsers.valueAt(i); |
| if (ui.partial && i != 0) { |
| partials.add(ui); |
| } |
| } |
| for (int i = 0; i < partials.size(); i++) { |
| UserInfo ui = partials.get(i); |
| Slog.w(LOG_TAG, "Removing partially created user #" + i |
| + " (name=" + ui.name + ")"); |
| removeUserStateLocked(ui.id); |
| } |
| sInstance = this; |
| } |
| } |
| } |
| |
| @Override |
| public List<UserInfo> getUsers(boolean excludeDying) { |
| checkManageUsersPermission("query users"); |
| synchronized (mPackagesLock) { |
| ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); |
| for (int i = 0; i < mUsers.size(); i++) { |
| UserInfo ui = mUsers.valueAt(i); |
| if (ui.partial) { |
| continue; |
| } |
| if (!excludeDying || !mRemovingUserIds.get(ui.id)) { |
| users.add(ui); |
| } |
| } |
| return users; |
| } |
| } |
| |
| @Override |
| public UserInfo getUserInfo(int userId) { |
| checkManageUsersPermission("query user"); |
| synchronized (mPackagesLock) { |
| return getUserInfoLocked(userId); |
| } |
| } |
| |
| /* |
| * Should be locked on mUsers before calling this. |
| */ |
| private UserInfo getUserInfoLocked(int userId) { |
| UserInfo ui = mUsers.get(userId); |
| // If it is partial and not in the process of being removed, return as unknown user. |
| if (ui != null && ui.partial && !mRemovingUserIds.get(userId)) { |
| Slog.w(LOG_TAG, "getUserInfo: unknown user #" + userId); |
| return null; |
| } |
| return ui; |
| } |
| |
| public boolean exists(int userId) { |
| synchronized (mPackagesLock) { |
| return ArrayUtils.contains(mUserIds, userId); |
| } |
| } |
| |
| @Override |
| public void setUserName(int userId, String name) { |
| checkManageUsersPermission("rename users"); |
| boolean changed = false; |
| synchronized (mPackagesLock) { |
| UserInfo info = mUsers.get(userId); |
| if (info == null || info.partial) { |
| Slog.w(LOG_TAG, "setUserName: unknown user #" + userId); |
| return; |
| } |
| if (name != null && !name.equals(info.name)) { |
| info.name = name; |
| writeUserLocked(info); |
| changed = true; |
| } |
| } |
| if (changed) { |
| sendUserInfoChangedBroadcast(userId); |
| } |
| } |
| |
| @Override |
| public void setUserIcon(int userId, Bitmap bitmap) { |
| checkManageUsersPermission("update users"); |
| synchronized (mPackagesLock) { |
| UserInfo info = mUsers.get(userId); |
| if (info == null || info.partial) { |
| Slog.w(LOG_TAG, "setUserIcon: unknown user #" + userId); |
| return; |
| } |
| writeBitmapLocked(info, bitmap); |
| writeUserLocked(info); |
| } |
| sendUserInfoChangedBroadcast(userId); |
| } |
| |
| private void sendUserInfoChangedBroadcast(int userId) { |
| Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED); |
| changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId); |
| changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); |
| mContext.sendBroadcastAsUser(changedIntent, new UserHandle(userId)); |
| } |
| |
| @Override |
| public Bitmap getUserIcon(int userId) { |
| checkManageUsersPermission("read users"); |
| synchronized (mPackagesLock) { |
| UserInfo info = mUsers.get(userId); |
| if (info == null || info.partial) { |
| Slog.w(LOG_TAG, "getUserIcon: unknown user #" + userId); |
| return null; |
| } |
| if (info.iconPath == null) { |
| return null; |
| } |
| return BitmapFactory.decodeFile(info.iconPath); |
| } |
| } |
| |
| @Override |
| public void setGuestEnabled(boolean enable) { |
| checkManageUsersPermission("enable guest users"); |
| synchronized (mPackagesLock) { |
| if (mGuestEnabled != enable) { |
| mGuestEnabled = enable; |
| // Erase any guest user that currently exists |
| for (int i = 0; i < mUsers.size(); i++) { |
| UserInfo user = mUsers.valueAt(i); |
| if (!user.partial && user.isGuest()) { |
| if (!enable) { |
| removeUser(user.id); |
| } |
| return; |
| } |
| } |
| // No guest was found |
| if (enable) { |
| createUser("Guest", UserInfo.FLAG_GUEST); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public boolean isGuestEnabled() { |
| synchronized (mPackagesLock) { |
| return mGuestEnabled; |
| } |
| } |
| |
| @Override |
| public void wipeUser(int userHandle) { |
| checkManageUsersPermission("wipe user"); |
| // TODO: |
| } |
| |
| public void makeInitialized(int userId) { |
| checkManageUsersPermission("makeInitialized"); |
| synchronized (mPackagesLock) { |
| UserInfo info = mUsers.get(userId); |
| if (info == null || info.partial) { |
| Slog.w(LOG_TAG, "makeInitialized: unknown user #" + userId); |
| } |
| if ((info.flags&UserInfo.FLAG_INITIALIZED) == 0) { |
| info.flags |= UserInfo.FLAG_INITIALIZED; |
| writeUserLocked(info); |
| } |
| } |
| } |
| |
| /** |
| * Check if we've hit the limit of how many users can be created. |
| */ |
| private boolean isUserLimitReachedLocked() { |
| int nUsers = mUsers.size(); |
| return nUsers >= UserManager.getMaxSupportedUsers(); |
| } |
| |
| /** |
| * Enforces that only the system UID or root's UID or apps that have the |
| * {@link android.Manifest.permission.MANAGE_USERS MANAGE_USERS} |
| * permission can make certain calls to the UserManager. |
| * |
| * @param message used as message if SecurityException is thrown |
| * @throws SecurityException if the caller is not system or root |
| */ |
| private static final void checkManageUsersPermission(String message) { |
| final int uid = Binder.getCallingUid(); |
| if (uid != Process.SYSTEM_UID && uid != 0 |
| && ActivityManager.checkComponentPermission( |
| android.Manifest.permission.MANAGE_USERS, |
| uid, -1, true) != PackageManager.PERMISSION_GRANTED) { |
| throw new SecurityException("You need MANAGE_USERS permission to: " + message); |
| } |
| } |
| |
| private void writeBitmapLocked(UserInfo info, Bitmap bitmap) { |
| try { |
| File dir = new File(mUsersDir, Integer.toString(info.id)); |
| File file = new File(dir, USER_PHOTO_FILENAME); |
| if (!dir.exists()) { |
| dir.mkdir(); |
| FileUtils.setPermissions( |
| dir.getPath(), |
| FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, |
| -1, -1); |
| } |
| FileOutputStream os; |
| if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(file))) { |
| info.iconPath = file.getAbsolutePath(); |
| } |
| try { |
| os.close(); |
| } catch (IOException ioe) { |
| // What the ... ! |
| } |
| } catch (FileNotFoundException e) { |
| Slog.w(LOG_TAG, "Error setting photo for user ", e); |
| } |
| } |
| |
| /** |
| * Returns an array of user ids. This array is cached here for quick access, so do not modify or |
| * cache it elsewhere. |
| * @return the array of user ids. |
| */ |
| public int[] getUserIds() { |
| synchronized (mPackagesLock) { |
| return mUserIds; |
| } |
| } |
| |
| int[] getUserIdsLPr() { |
| return mUserIds; |
| } |
| |
| private void readUserList() { |
| synchronized (mPackagesLock) { |
| readUserListLocked(); |
| } |
| } |
| |
| private void readUserListLocked() { |
| mGuestEnabled = false; |
| if (!mUserListFile.exists()) { |
| fallbackToSingleUserLocked(); |
| return; |
| } |
| FileInputStream fis = null; |
| AtomicFile userListFile = new AtomicFile(mUserListFile); |
| try { |
| fis = userListFile.openRead(); |
| XmlPullParser parser = Xml.newPullParser(); |
| parser.setInput(fis, null); |
| int type; |
| while ((type = parser.next()) != XmlPullParser.START_TAG |
| && type != XmlPullParser.END_DOCUMENT) { |
| ; |
| } |
| |
| if (type != XmlPullParser.START_TAG) { |
| Slog.e(LOG_TAG, "Unable to read user list"); |
| fallbackToSingleUserLocked(); |
| return; |
| } |
| |
| mNextSerialNumber = -1; |
| if (parser.getName().equals(TAG_USERS)) { |
| String lastSerialNumber = parser.getAttributeValue(null, ATTR_NEXT_SERIAL_NO); |
| if (lastSerialNumber != null) { |
| mNextSerialNumber = Integer.parseInt(lastSerialNumber); |
| } |
| String versionNumber = parser.getAttributeValue(null, ATTR_USER_VERSION); |
| if (versionNumber != null) { |
| mUserVersion = Integer.parseInt(versionNumber); |
| } |
| } |
| |
| while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) { |
| if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { |
| String id = parser.getAttributeValue(null, ATTR_ID); |
| UserInfo user = readUser(Integer.parseInt(id)); |
| |
| if (user != null) { |
| mUsers.put(user.id, user); |
| if (user.isGuest()) { |
| mGuestEnabled = true; |
| } |
| if (mNextSerialNumber < 0 || mNextSerialNumber <= user.id) { |
| mNextSerialNumber = user.id + 1; |
| } |
| } |
| } |
| } |
| updateUserIdsLocked(); |
| upgradeIfNecessary(); |
| } catch (IOException ioe) { |
| fallbackToSingleUserLocked(); |
| } catch (XmlPullParserException pe) { |
| fallbackToSingleUserLocked(); |
| } finally { |
| if (fis != null) { |
| try { |
| fis.close(); |
| } catch (IOException e) { |
| } |
| } |
| } |
| } |
| |
| /** |
| * This fixes an incorrect initialization of user name for the owner. |
| * TODO: Remove in the next release. |
| */ |
| private void upgradeIfNecessary() { |
| int userVersion = mUserVersion; |
| if (userVersion < 1) { |
| // Assign a proper name for the owner, if not initialized correctly before |
| UserInfo user = mUsers.get(UserHandle.USER_OWNER); |
| if ("Primary".equals(user.name)) { |
| user.name = mContext.getResources().getString(com.android.internal.R.string.owner_name); |
| writeUserLocked(user); |
| } |
| userVersion = 1; |
| } |
| |
| if (userVersion < USER_VERSION) { |
| Slog.w(LOG_TAG, "User version " + mUserVersion + " didn't upgrade as expected to " |
| + USER_VERSION); |
| } else { |
| mUserVersion = userVersion; |
| writeUserListLocked(); |
| } |
| } |
| |
| private void fallbackToSingleUserLocked() { |
| // Create the primary user |
| UserInfo primary = new UserInfo(0, |
| mContext.getResources().getString(com.android.internal.R.string.owner_name), null, |
| UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY | UserInfo.FLAG_INITIALIZED); |
| mUsers.put(0, primary); |
| mNextSerialNumber = MIN_USER_ID; |
| updateUserIdsLocked(); |
| |
| writeUserListLocked(); |
| writeUserLocked(primary); |
| } |
| |
| /* |
| * Writes the user file in this format: |
| * |
| * <user flags="20039023" id="0"> |
| * <name>Primary</name> |
| * </user> |
| */ |
| private void writeUserLocked(UserInfo userInfo) { |
| FileOutputStream fos = null; |
| AtomicFile userFile = new AtomicFile(new File(mUsersDir, userInfo.id + ".xml")); |
| try { |
| fos = userFile.startWrite(); |
| final BufferedOutputStream bos = new BufferedOutputStream(fos); |
| |
| // XmlSerializer serializer = XmlUtils.serializerInstance(); |
| final XmlSerializer serializer = new FastXmlSerializer(); |
| serializer.setOutput(bos, "utf-8"); |
| serializer.startDocument(null, true); |
| serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); |
| |
| serializer.startTag(null, TAG_USER); |
| serializer.attribute(null, ATTR_ID, Integer.toString(userInfo.id)); |
| serializer.attribute(null, ATTR_SERIAL_NO, Integer.toString(userInfo.serialNumber)); |
| serializer.attribute(null, ATTR_FLAGS, Integer.toString(userInfo.flags)); |
| serializer.attribute(null, ATTR_CREATION_TIME, Long.toString(userInfo.creationTime)); |
| serializer.attribute(null, ATTR_LAST_LOGGED_IN_TIME, |
| Long.toString(userInfo.lastLoggedInTime)); |
| if (userInfo.iconPath != null) { |
| serializer.attribute(null, ATTR_ICON_PATH, userInfo.iconPath); |
| } |
| if (userInfo.partial) { |
| serializer.attribute(null, ATTR_PARTIAL, "true"); |
| } |
| |
| serializer.startTag(null, TAG_NAME); |
| serializer.text(userInfo.name); |
| serializer.endTag(null, TAG_NAME); |
| |
| serializer.endTag(null, TAG_USER); |
| |
| serializer.endDocument(); |
| userFile.finishWrite(fos); |
| } catch (Exception ioe) { |
| Slog.e(LOG_TAG, "Error writing user info " + userInfo.id + "\n" + ioe); |
| userFile.failWrite(fos); |
| } |
| } |
| |
| /* |
| * Writes the user list file in this format: |
| * |
| * <users nextSerialNumber="3"> |
| * <user id="0"></user> |
| * <user id="2"></user> |
| * </users> |
| */ |
| private void writeUserListLocked() { |
| FileOutputStream fos = null; |
| AtomicFile userListFile = new AtomicFile(mUserListFile); |
| try { |
| fos = userListFile.startWrite(); |
| final BufferedOutputStream bos = new BufferedOutputStream(fos); |
| |
| // XmlSerializer serializer = XmlUtils.serializerInstance(); |
| final XmlSerializer serializer = new FastXmlSerializer(); |
| serializer.setOutput(bos, "utf-8"); |
| serializer.startDocument(null, true); |
| serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); |
| |
| serializer.startTag(null, TAG_USERS); |
| serializer.attribute(null, ATTR_NEXT_SERIAL_NO, Integer.toString(mNextSerialNumber)); |
| serializer.attribute(null, ATTR_USER_VERSION, Integer.toString(mUserVersion)); |
| |
| for (int i = 0; i < mUsers.size(); i++) { |
| UserInfo user = mUsers.valueAt(i); |
| serializer.startTag(null, TAG_USER); |
| serializer.attribute(null, ATTR_ID, Integer.toString(user.id)); |
| serializer.endTag(null, TAG_USER); |
| } |
| |
| serializer.endTag(null, TAG_USERS); |
| |
| serializer.endDocument(); |
| userListFile.finishWrite(fos); |
| } catch (Exception e) { |
| userListFile.failWrite(fos); |
| Slog.e(LOG_TAG, "Error writing user list"); |
| } |
| } |
| |
| private UserInfo readUser(int id) { |
| int flags = 0; |
| int serialNumber = id; |
| String name = null; |
| String iconPath = null; |
| long creationTime = 0L; |
| long lastLoggedInTime = 0L; |
| boolean partial = false; |
| |
| FileInputStream fis = null; |
| try { |
| AtomicFile userFile = |
| new AtomicFile(new File(mUsersDir, Integer.toString(id) + ".xml")); |
| fis = userFile.openRead(); |
| XmlPullParser parser = Xml.newPullParser(); |
| parser.setInput(fis, null); |
| int type; |
| while ((type = parser.next()) != XmlPullParser.START_TAG |
| && type != XmlPullParser.END_DOCUMENT) { |
| ; |
| } |
| |
| if (type != XmlPullParser.START_TAG) { |
| Slog.e(LOG_TAG, "Unable to read user " + id); |
| return null; |
| } |
| |
| if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { |
| int storedId = readIntAttribute(parser, ATTR_ID, -1); |
| if (storedId != id) { |
| Slog.e(LOG_TAG, "User id does not match the file name"); |
| return null; |
| } |
| serialNumber = readIntAttribute(parser, ATTR_SERIAL_NO, id); |
| flags = readIntAttribute(parser, ATTR_FLAGS, 0); |
| iconPath = parser.getAttributeValue(null, ATTR_ICON_PATH); |
| creationTime = readLongAttribute(parser, ATTR_CREATION_TIME, 0); |
| lastLoggedInTime = readLongAttribute(parser, ATTR_LAST_LOGGED_IN_TIME, 0); |
| String valueString = parser.getAttributeValue(null, ATTR_PARTIAL); |
| if ("true".equals(valueString)) { |
| partial = true; |
| } |
| |
| while ((type = parser.next()) != XmlPullParser.START_TAG |
| && type != XmlPullParser.END_DOCUMENT) { |
| } |
| if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_NAME)) { |
| type = parser.next(); |
| if (type == XmlPullParser.TEXT) { |
| name = parser.getText(); |
| } |
| } |
| } |
| |
| UserInfo userInfo = new UserInfo(id, name, iconPath, flags); |
| userInfo.serialNumber = serialNumber; |
| userInfo.creationTime = creationTime; |
| userInfo.lastLoggedInTime = lastLoggedInTime; |
| userInfo.partial = partial; |
| return userInfo; |
| |
| } catch (IOException ioe) { |
| } catch (XmlPullParserException pe) { |
| } finally { |
| if (fis != null) { |
| try { |
| fis.close(); |
| } catch (IOException e) { |
| } |
| } |
| } |
| return null; |
| } |
| |
| private int readIntAttribute(XmlPullParser parser, String attr, int defaultValue) { |
| String valueString = parser.getAttributeValue(null, attr); |
| if (valueString == null) return defaultValue; |
| try { |
| return Integer.parseInt(valueString); |
| } catch (NumberFormatException nfe) { |
| return defaultValue; |
| } |
| } |
| |
| private long readLongAttribute(XmlPullParser parser, String attr, long defaultValue) { |
| String valueString = parser.getAttributeValue(null, attr); |
| if (valueString == null) return defaultValue; |
| try { |
| return Long.parseLong(valueString); |
| } catch (NumberFormatException nfe) { |
| return defaultValue; |
| } |
| } |
| |
| @Override |
| public UserInfo createUser(String name, int flags) { |
| checkManageUsersPermission("Only the system can create users"); |
| |
| final long ident = Binder.clearCallingIdentity(); |
| final UserInfo userInfo; |
| try { |
| synchronized (mInstallLock) { |
| synchronized (mPackagesLock) { |
| if (isUserLimitReachedLocked()) return null; |
| int userId = getNextAvailableIdLocked(); |
| userInfo = new UserInfo(userId, name, null, flags); |
| File userPath = new File(mBaseUserPath, Integer.toString(userId)); |
| userInfo.serialNumber = mNextSerialNumber++; |
| long now = System.currentTimeMillis(); |
| userInfo.creationTime = (now > EPOCH_PLUS_30_YEARS) ? now : 0; |
| userInfo.partial = true; |
| Environment.getUserSystemDirectory(userInfo.id).mkdirs(); |
| mUsers.put(userId, userInfo); |
| writeUserListLocked(); |
| writeUserLocked(userInfo); |
| mPm.createNewUserLILPw(userId, userPath); |
| userInfo.partial = false; |
| writeUserLocked(userInfo); |
| updateUserIdsLocked(); |
| } |
| } |
| if (userInfo != null) { |
| Intent addedIntent = new Intent(Intent.ACTION_USER_ADDED); |
| addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userInfo.id); |
| mContext.sendBroadcastAsUser(addedIntent, UserHandle.ALL, |
| android.Manifest.permission.MANAGE_USERS); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| return userInfo; |
| } |
| |
| /** |
| * Removes a user and all data directories created for that user. This method should be called |
| * after the user's processes have been terminated. |
| * @param id the user's id |
| */ |
| public boolean removeUser(int userHandle) { |
| checkManageUsersPermission("Only the system can remove users"); |
| final UserInfo user; |
| synchronized (mPackagesLock) { |
| user = mUsers.get(userHandle); |
| if (userHandle == 0 || user == null) { |
| return false; |
| } |
| mRemovingUserIds.put(userHandle, true); |
| // Set this to a partially created user, so that the user will be purged |
| // on next startup, in case the runtime stops now before stopping and |
| // removing the user completely. |
| user.partial = true; |
| writeUserLocked(user); |
| } |
| if (DBG) Slog.i(LOG_TAG, "Stopping user " + userHandle); |
| int res; |
| try { |
| res = ActivityManagerNative.getDefault().stopUser(userHandle, |
| new IStopUserCallback.Stub() { |
| @Override |
| public void userStopped(int userId) { |
| finishRemoveUser(userId); |
| } |
| @Override |
| public void userStopAborted(int userId) { |
| } |
| }); |
| } catch (RemoteException e) { |
| return false; |
| } |
| |
| return res == ActivityManager.USER_OP_SUCCESS; |
| } |
| |
| void finishRemoveUser(final int userHandle) { |
| if (DBG) Slog.i(LOG_TAG, "finishRemoveUser " + userHandle); |
| // Let other services shutdown any activity and clean up their state before completely |
| // wiping the user's system directory and removing from the user list |
| long ident = Binder.clearCallingIdentity(); |
| try { |
| Intent addedIntent = new Intent(Intent.ACTION_USER_REMOVED); |
| addedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userHandle); |
| mContext.sendOrderedBroadcastAsUser(addedIntent, UserHandle.ALL, |
| android.Manifest.permission.MANAGE_USERS, |
| |
| new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (DBG) { |
| Slog.i(LOG_TAG, |
| "USER_REMOVED broadcast sent, cleaning up user data " |
| + userHandle); |
| } |
| new Thread() { |
| public void run() { |
| synchronized (mInstallLock) { |
| synchronized (mPackagesLock) { |
| removeUserStateLocked(userHandle); |
| } |
| } |
| } |
| }.start(); |
| } |
| }, |
| |
| null, Activity.RESULT_OK, null, null); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| private void removeUserStateLocked(final int userHandle) { |
| // Cleanup package manager settings |
| mPm.cleanUpUserLILPw(userHandle); |
| |
| // Remove this user from the list |
| mUsers.remove(userHandle); |
| |
| // Have user ID linger for several seconds to let external storage VFS |
| // cache entries expire. This must be greater than the 'entry_valid' |
| // timeout used by the FUSE daemon. |
| mHandler.postDelayed(new Runnable() { |
| @Override |
| public void run() { |
| synchronized (mPackagesLock) { |
| mRemovingUserIds.delete(userHandle); |
| } |
| } |
| }, MINUTE_IN_MILLIS); |
| |
| // Remove user file |
| AtomicFile userFile = new AtomicFile(new File(mUsersDir, userHandle + ".xml")); |
| userFile.delete(); |
| // Update the user list |
| writeUserListLocked(); |
| updateUserIdsLocked(); |
| removeDirectoryRecursive(Environment.getUserSystemDirectory(userHandle)); |
| } |
| |
| private void removeDirectoryRecursive(File parent) { |
| if (parent.isDirectory()) { |
| String[] files = parent.list(); |
| for (String filename : files) { |
| File child = new File(parent, filename); |
| removeDirectoryRecursive(child); |
| } |
| } |
| parent.delete(); |
| } |
| |
| @Override |
| public int getUserSerialNumber(int userHandle) { |
| synchronized (mPackagesLock) { |
| if (!exists(userHandle)) return -1; |
| return getUserInfoLocked(userHandle).serialNumber; |
| } |
| } |
| |
| @Override |
| public int getUserHandle(int userSerialNumber) { |
| synchronized (mPackagesLock) { |
| for (int userId : mUserIds) { |
| if (getUserInfoLocked(userId).serialNumber == userSerialNumber) return userId; |
| } |
| // Not found |
| return -1; |
| } |
| } |
| |
| /** |
| * Caches the list of user ids in an array, adjusting the array size when necessary. |
| */ |
| private void updateUserIdsLocked() { |
| int num = 0; |
| for (int i = 0; i < mUsers.size(); i++) { |
| if (!mUsers.valueAt(i).partial) { |
| num++; |
| } |
| } |
| final int[] newUsers = new int[num]; |
| int n = 0; |
| for (int i = 0; i < mUsers.size(); i++) { |
| if (!mUsers.valueAt(i).partial) { |
| newUsers[n++] = mUsers.keyAt(i); |
| } |
| } |
| mUserIds = newUsers; |
| } |
| |
| /** |
| * Make a note of the last started time of a user. |
| * @param userId the user that was just foregrounded |
| */ |
| public void userForeground(int userId) { |
| synchronized (mPackagesLock) { |
| UserInfo user = mUsers.get(userId); |
| long now = System.currentTimeMillis(); |
| if (user == null || user.partial) { |
| Slog.w(LOG_TAG, "userForeground: unknown user #" + userId); |
| return; |
| } |
| if (now > EPOCH_PLUS_30_YEARS) { |
| user.lastLoggedInTime = now; |
| writeUserLocked(user); |
| } |
| } |
| } |
| |
| /** |
| * Returns the next available user id, filling in any holes in the ids. |
| * TODO: May not be a good idea to recycle ids, in case it results in confusion |
| * for data and battery stats collection, or unexpected cross-talk. |
| * @return |
| */ |
| private int getNextAvailableIdLocked() { |
| synchronized (mPackagesLock) { |
| int i = MIN_USER_ID; |
| while (i < Integer.MAX_VALUE) { |
| if (mUsers.indexOfKey(i) < 0 && !mRemovingUserIds.get(i)) { |
| break; |
| } |
| i++; |
| } |
| return i; |
| } |
| } |
| |
| @Override |
| protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) |
| != PackageManager.PERMISSION_GRANTED) { |
| pw.println("Permission Denial: can't dump UserManager from from pid=" |
| + Binder.getCallingPid() |
| + ", uid=" + Binder.getCallingUid() |
| + " without permission " |
| + android.Manifest.permission.DUMP); |
| return; |
| } |
| |
| long now = System.currentTimeMillis(); |
| StringBuilder sb = new StringBuilder(); |
| synchronized (mPackagesLock) { |
| pw.println("Users:"); |
| for (int i = 0; i < mUsers.size(); i++) { |
| UserInfo user = mUsers.valueAt(i); |
| if (user == null) continue; |
| pw.print(" "); pw.print(user); pw.print(" serialNo="); pw.print(user.serialNumber); |
| if (mRemovingUserIds.get(mUsers.keyAt(i))) pw.print(" <removing> "); |
| if (user.partial) pw.print(" <partial>"); |
| pw.println(); |
| pw.print(" Created: "); |
| if (user.creationTime == 0) { |
| pw.println("<unknown>"); |
| } else { |
| sb.setLength(0); |
| TimeUtils.formatDuration(now - user.creationTime, sb); |
| sb.append(" ago"); |
| pw.println(sb); |
| } |
| pw.print(" Last logged in: "); |
| if (user.lastLoggedInTime == 0) { |
| pw.println("<unknown>"); |
| } else { |
| sb.setLength(0); |
| TimeUtils.formatDuration(now - user.lastLoggedInTime, sb); |
| sb.append(" ago"); |
| pw.println(sb); |
| } |
| } |
| } |
| } |
| } |
