001 /*
002 * Copyright (C) 2012 eXo Platform SAS.
003 *
004 * This is free software; you can redistribute it and/or modify it
005 * under the terms of the GNU Lesser General Public License as
006 * published by the Free Software Foundation; either version 2.1 of
007 * the License, or (at your option) any later version.
008 *
009 * This software is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this software; if not, write to the Free
016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018 */
019
020 package org.crsh.telnet.term;
021
022 import net.wimpi.telnetd.io.terminal.TerminalManager;
023 import net.wimpi.telnetd.net.Connection;
024 import net.wimpi.telnetd.net.ConnectionManager;
025 import net.wimpi.telnetd.net.PortListener;
026 import net.wimpi.telnetd.shell.ShellManager;
027 import net.wimpi.telnetd.util.StringUtil;
028 import org.crsh.plugin.PluginContext;
029 import org.crsh.vfs.Resource;
030
031 import java.io.ByteArrayInputStream;
032 import java.util.ArrayList;
033 import java.util.List;
034 import java.util.Properties;
035 import java.util.concurrent.ConcurrentHashMap;
036 import java.util.logging.Level;
037 import java.util.logging.Logger;
038
039 public class TelnetLifeCycle extends TermLifeCycle {
040
041 /** . */
042 private final Logger log = Logger.getLogger(TelnetLifeCycle.class.getName());
043
044 /** . */
045 private Integer port;
046
047 /** . */
048 private List<PortListener> listeners;
049
050 /** . */
051 private static final ConcurrentHashMap<ConnectionManager, TelnetLifeCycle> map = new ConcurrentHashMap<ConnectionManager, TelnetLifeCycle>();
052
053 /** . */
054 private Resource config;
055
056 static TelnetLifeCycle getLifeCycle(Connection conn) {
057 return map.get(conn.getConnectionData().getManager());
058 }
059
060 public TelnetLifeCycle(PluginContext context) {
061 super(context);
062 }
063
064 public Integer getPort() {
065 return port;
066 }
067
068 public void setPort(Integer port) {
069 this.port = port;
070 }
071
072 public Resource getConfig() {
073 return config;
074 }
075
076 public void setConfig(Resource config) {
077 this.config = config;
078 }
079
080 @Override
081 protected synchronized void doInit() throws Exception {
082 Properties props = new Properties();
083 props.load(new ByteArrayInputStream(config.getContent()));
084
085 //
086 if (port != null) {
087 log.log(Level.FINE, "Explicit telnet port configuration with value " + port);
088 props.put("std.port", port.toString());
089 } else {
090 log.log(Level.FINE, "Use default telnet port configuration " + props.getProperty("std.port"));
091 }
092
093 //
094 ShellManager.createShellManager(props);
095
096 //
097 TerminalManager.createTerminalManager(props);
098
099 //
100 ArrayList<PortListener> listeners = new ArrayList<PortListener>();
101 String[] listnames = StringUtil.split(props.getProperty("listeners"), ",");
102 for (String listname : listnames) {
103 PortListener listener = PortListener.createPortListener(listname, props);
104 listeners.add(listener);
105 }
106
107 //
108 this.listeners = listeners;
109
110 // Start listeners
111 for (PortListener listener : this.listeners) {
112 listener.start();
113 map.put(listener.getConnectionManager(), this);
114 }
115 }
116
117 @Override
118 protected synchronized void doDestroy() {
119 log.log(Level.INFO, "Destroying telnet life cycle");
120 if (listeners != null) {
121 List<PortListener> listeners = this.listeners;
122 this.listeners = null;
123 for (PortListener listener : listeners) {
124 try {
125 listener.stop();
126 } catch (Exception ignore) {
127 } finally {
128 map.remove(listener.getConnectionManager());
129 }
130 }
131 }
132 }
133 }