| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.catalina.startup; |
| |
| import java.io.BufferedReader; |
| import java.io.FileReader; |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| |
| import org.apache.juli.logging.Log; |
| import org.apache.juli.logging.LogFactory; |
| import org.apache.naming.StringManager; |
| |
| /** |
| * Concrete implementation of the <code>UserDatabase</code> interface |
| * that processes the <code>/etc/passwd</code> file on a Unix system. |
| * |
| * @author Craig R. McClanahan |
| */ |
| public final class PasswdUserDatabase implements UserDatabase { |
| |
| private static final Log log = LogFactory.getLog(PasswdUserDatabase.class); |
| private static final StringManager sm = StringManager.getManager(PasswdUserDatabase.class); |
| |
| /** |
| * The pathname of the Unix password file. |
| */ |
| private static final String PASSWORD_FILE = "/etc/passwd"; |
| |
| |
| /** |
| * The set of home directories for all defined users, keyed by username. |
| */ |
| private final Hashtable<String,String> homes = new Hashtable<>(); |
| |
| |
| /** |
| * The UserConfig listener with which we are associated. |
| */ |
| private UserConfig userConfig = null; |
| |
| |
| /** |
| * Return the UserConfig listener with which we are associated. |
| */ |
| @Override |
| public UserConfig getUserConfig() { |
| return userConfig; |
| } |
| |
| |
| /** |
| * Set the UserConfig listener with which we are associated. |
| * |
| * @param userConfig The new UserConfig listener |
| */ |
| @Override |
| public void setUserConfig(UserConfig userConfig) { |
| this.userConfig = userConfig; |
| init(); |
| } |
| |
| |
| /** |
| * Return an absolute pathname to the home directory for the specified user. |
| * |
| * @param user User for which a home directory should be retrieved |
| */ |
| @Override |
| public String getHome(String user) { |
| return homes.get(user); |
| } |
| |
| |
| /** |
| * Return an enumeration of the usernames defined on this server. |
| */ |
| @Override |
| public Enumeration<String> getUsers() { |
| return homes.keys(); |
| } |
| |
| |
| /** |
| * Initialize our set of users and home directories. |
| */ |
| private void init() { |
| try (BufferedReader reader = new BufferedReader(new FileReader(PASSWORD_FILE))) { |
| String line = reader.readLine(); |
| while (line != null) { |
| String tokens[] = line.split(":"); |
| // Need non-zero 1st and 6th tokens |
| if (tokens.length > 5 && tokens[0].length() > 0 && tokens[5].length() > 0) { |
| // Add this user and corresponding directory |
| homes.put(tokens[0], tokens[5]); |
| } |
| line = reader.readLine(); |
| } |
| } catch (Exception e) { |
| log.warn(sm.getString("passwdUserDatabase.readFail"), e); |
| } |
| } |
| } |