| /* |
| * 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 com.android.internal.util.FastXmlSerializer; |
| |
| import android.content.pm.UserInfo; |
| import android.os.Environment; |
| import android.os.FileUtils; |
| import android.util.Slog; |
| import android.util.SparseArray; |
| import android.util.Xml; |
| |
| import java.io.BufferedOutputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| import org.xmlpull.v1.XmlSerializer; |
| |
| public class UserDetails { |
| private static final String TAG_NAME = "name"; |
| |
| private static final String ATTR_FLAGS = "flags"; |
| |
| private static final String ATTR_ID = "id"; |
| |
| private static final String TAG_USERS = "users"; |
| |
| private static final String TAG_USER = "user"; |
| |
| private static final String TAG = "UserDetails"; |
| |
| private static final String USER_INFO_DIR = "system/users"; |
| private static final String USER_LIST_FILENAME = "userlist.xml"; |
| |
| private SparseArray<UserInfo> mUsers; |
| |
| private final File mUsersDir; |
| private final File mUserListFile; |
| |
| /** |
| * Available for testing purposes. |
| */ |
| UserDetails(File dataDir) { |
| mUsersDir = new File(dataDir, USER_INFO_DIR); |
| mUsersDir.mkdirs(); |
| 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); |
| readUserList(); |
| } |
| |
| public UserDetails() { |
| this(Environment.getDataDirectory()); |
| } |
| |
| public List<UserInfo> getUsers() { |
| ArrayList<UserInfo> users = new ArrayList<UserInfo>(mUsers.size()); |
| for (int i = 0; i < mUsers.size(); i++) { |
| users.add(mUsers.valueAt(i)); |
| } |
| return users; |
| } |
| |
| private void readUserList() { |
| mUsers = new SparseArray<UserInfo>(); |
| if (!mUserListFile.exists()) { |
| fallbackToSingleUser(); |
| return; |
| } |
| FileInputStream fis = null; |
| try { |
| fis = new FileInputStream(mUserListFile); |
| 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(TAG, "Unable to read user list"); |
| fallbackToSingleUser(); |
| return; |
| } |
| |
| 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); |
| } |
| } |
| } |
| } catch (IOException ioe) { |
| fallbackToSingleUser(); |
| } catch (XmlPullParserException pe) { |
| fallbackToSingleUser(); |
| } |
| } |
| |
| private void fallbackToSingleUser() { |
| // Create the primary user |
| UserInfo primary = new UserInfo(0, "Primary", |
| UserInfo.FLAG_ADMIN | UserInfo.FLAG_PRIMARY); |
| mUsers.put(0, primary); |
| |
| writeUserList(); |
| writeUser(primary); |
| } |
| |
| /* |
| * Writes the user file in this format: |
| * |
| * <user flags="20039023" id="0"> |
| * <name>Primary</name> |
| * </user> |
| */ |
| private void writeUser(UserInfo userInfo) { |
| try { |
| final File mUserFile = new File(mUsersDir, userInfo.id + ".xml"); |
| final FileOutputStream fos = new FileOutputStream(mUserFile); |
| 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_FLAGS, Integer.toString(userInfo.flags)); |
| |
| serializer.startTag(null, TAG_NAME); |
| serializer.text(userInfo.name); |
| serializer.endTag(null, TAG_NAME); |
| |
| serializer.endTag(null, TAG_USER); |
| |
| serializer.endDocument(); |
| } catch (IOException ioe) { |
| Slog.e(TAG, "Error writing user info " + userInfo.id + "\n" + ioe); |
| } |
| } |
| |
| /* |
| * Writes the user list file in this format: |
| * |
| * <users> |
| * <user id="0"></user> |
| * <user id="2"></user> |
| * </users> |
| */ |
| private void writeUserList() { |
| try { |
| final FileOutputStream fos = new FileOutputStream(mUserListFile); |
| 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); |
| |
| 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); |
| Slog.e(TAG, "Wrote user " + user.id + " to userlist.xml"); |
| } |
| |
| serializer.endTag(null, TAG_USERS); |
| |
| serializer.endDocument(); |
| } catch (IOException ioe) { |
| Slog.e(TAG, "Error writing user list"); |
| } |
| } |
| |
| private UserInfo readUser(int id) { |
| int flags = 0; |
| String name = null; |
| |
| FileInputStream fis = null; |
| try { |
| File userFile = new File(mUsersDir, Integer.toString(id) + ".xml"); |
| fis = new FileInputStream(userFile); |
| 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(TAG, "Unable to read user " + id); |
| return null; |
| } |
| |
| if (type == XmlPullParser.START_TAG && parser.getName().equals(TAG_USER)) { |
| String storedId = parser.getAttributeValue(null, ATTR_ID); |
| if (Integer.parseInt(storedId) != id) { |
| Slog.e(TAG, "User id does not match the file name"); |
| return null; |
| } |
| String flagString = parser.getAttributeValue(null, ATTR_FLAGS); |
| flags = Integer.parseInt(flagString); |
| |
| 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(); |
| } |
| } |
| } |
| fis.close(); |
| |
| UserInfo userInfo = new UserInfo(id, name, flags); |
| return userInfo; |
| |
| } catch (IOException ioe) { |
| } catch (XmlPullParserException pe) { |
| } |
| return null; |
| } |
| |
| public UserInfo createUser(String name, int flags) { |
| int id = getNextAvailableId(); |
| UserInfo userInfo = new UserInfo(id, name, flags); |
| if (!createPackageFolders(id)) { |
| return null; |
| } |
| mUsers.put(id, userInfo); |
| writeUserList(); |
| writeUser(userInfo); |
| return userInfo; |
| } |
| |
| public void removeUser(int id) { |
| // Remove from the list |
| UserInfo userInfo = mUsers.get(id); |
| if (userInfo != null) { |
| // Remove this user from the list |
| mUsers.remove(id); |
| // Remove user file |
| File userFile = new File(mUsersDir, id + ".xml"); |
| userFile.delete(); |
| writeUserList(); |
| removePackageFolders(id); |
| } |
| } |
| |
| private int getNextAvailableId() { |
| int i = 0; |
| while (i < Integer.MAX_VALUE) { |
| if (mUsers.indexOfKey(i) < 0) { |
| break; |
| } |
| i++; |
| } |
| return i; |
| } |
| |
| private boolean createPackageFolders(int id) { |
| // TODO: Create data directories for all the packages for a new user, w/ specified user id. |
| return true; |
| } |
| |
| private boolean removePackageFolders(int id) { |
| // TODO: Remove all the data directories for the specified user. |
| return true; |
| } |
| } |