118 lines
3.5 KiB
Java
118 lines
3.5 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.catalina.startup;
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import java.io.BufferedReader;
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import java.io.FileReader;
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import java.util.Enumeration;
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import java.util.Hashtable;
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import org.apache.juli.logging.Log;
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import org.apache.juli.logging.LogFactory;
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import org.apache.naming.StringManager;
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/**
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* Concrete implementation of the <code>UserDatabase</code> interface
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* that processes the <code>/etc/passwd</code> file on a Unix system.
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*
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* @author Craig R. McClanahan
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*/
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public final class PasswdUserDatabase implements UserDatabase {
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private static final Log log = LogFactory.getLog(PasswdUserDatabase.class);
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private static final StringManager sm = StringManager.getManager(PasswdUserDatabase.class);
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/**
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* The pathname of the Unix password file.
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*/
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private static final String PASSWORD_FILE = "/etc/passwd";
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/**
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* The set of home directories for all defined users, keyed by username.
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*/
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private final Hashtable<String,String> homes = new Hashtable<>();
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/**
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* The UserConfig listener with which we are associated.
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*/
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private UserConfig userConfig = null;
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/**
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* Return the UserConfig listener with which we are associated.
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*/
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@Override
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public UserConfig getUserConfig() {
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return userConfig;
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}
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/**
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* Set the UserConfig listener with which we are associated.
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*
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* @param userConfig The new UserConfig listener
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*/
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@Override
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public void setUserConfig(UserConfig userConfig) {
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this.userConfig = userConfig;
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init();
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}
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/**
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* Return an absolute pathname to the home directory for the specified user.
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*
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* @param user User for which a home directory should be retrieved
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*/
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@Override
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public String getHome(String user) {
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return homes.get(user);
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}
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/**
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* Return an enumeration of the usernames defined on this server.
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*/
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@Override
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public Enumeration<String> getUsers() {
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return homes.keys();
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}
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/**
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* Initialize our set of users and home directories.
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*/
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private void init() {
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try (BufferedReader reader = new BufferedReader(new FileReader(PASSWORD_FILE))) {
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String line = reader.readLine();
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while (line != null) {
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String tokens[] = line.split(":");
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// Need non-zero 1st and 6th tokens
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if (tokens.length > 5 && tokens[0].length() > 0 && tokens[5].length() > 0) {
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// Add this user and corresponding directory
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homes.put(tokens[0], tokens[5]);
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}
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line = reader.readLine();
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}
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} catch (Exception e) {
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log.warn(sm.getString("passwdUserDatabase.readFail"), e);
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}
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}
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}
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