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
020package org.crsh.telnet.term;
021
022import net.wimpi.telnetd.io.terminal.TerminalManager;
023import net.wimpi.telnetd.net.Connection;
024import net.wimpi.telnetd.net.ConnectionManager;
025import net.wimpi.telnetd.net.PortListener;
026import net.wimpi.telnetd.shell.ShellManager;
027import net.wimpi.telnetd.util.StringUtil;
028import org.crsh.plugin.PluginContext;
029import org.crsh.term.TermLifeCycle;
030import org.crsh.vfs.Resource;
031
032import java.io.ByteArrayInputStream;
033import java.util.ArrayList;
034import java.util.List;
035import java.util.Properties;
036import java.util.concurrent.ConcurrentHashMap;
037import java.util.logging.Level;
038import java.util.logging.Logger;
039
040public class TelnetLifeCycle extends TermLifeCycle {
041
042  /** . */
043  private final Logger log = Logger.getLogger(TelnetLifeCycle.class.getName());
044
045  /** . */
046  private Integer port;
047
048  /** . */
049  private List<PortListener> listeners;
050
051  /** . */
052  private static final ConcurrentHashMap<ConnectionManager, TelnetLifeCycle> map = new ConcurrentHashMap<ConnectionManager, TelnetLifeCycle>();
053
054  /** . */
055  private Resource config;
056
057  static TelnetLifeCycle getLifeCycle(Connection conn) {
058    return map.get(conn.getConnectionData().getManager());
059  }
060
061  public TelnetLifeCycle(PluginContext context) {
062    super(context);
063  }
064
065  public Integer getPort() {
066    return port;
067  }
068
069  public void setPort(Integer port) {
070    this.port = port;
071  }
072
073  public Resource getConfig() {
074    return config;
075  }
076
077  public void setConfig(Resource config) {
078    this.config = config;
079  }
080
081  @Override
082  protected synchronized void doInit() throws Exception {
083    Properties props = new Properties();
084    props.load(new ByteArrayInputStream(config.getContent()));
085
086    //
087    if (port != null) {
088      log.log(Level.FINE, "Explicit telnet port configuration with value " + port);
089      props.put("std.port", port.toString());
090    } else {
091      log.log(Level.FINE, "Use default telnet port configuration " + props.getProperty("std.port"));
092    }
093
094    //
095    ShellManager.createShellManager(props);
096
097    //
098    TerminalManager.createTerminalManager(props);
099
100    //
101    ArrayList<PortListener> listeners = new ArrayList<PortListener>();
102    String[] listnames = StringUtil.split(props.getProperty("listeners"), ",");
103    for (String listname : listnames) {
104      PortListener listener = PortListener.createPortListener(listname, props);
105      listeners.add(listener);
106    }
107
108    //
109    this.listeners = listeners;
110
111    // Start listeners
112    for (PortListener listener : this.listeners) {
113      listener.start();
114      map.put(listener.getConnectionManager(), this);
115    }
116  }
117
118  @Override
119  protected synchronized void doDestroy() {
120    log.log(Level.INFO, "Destroying telnet life cycle");
121    if (listeners != null) {
122      List<PortListener> listeners = this.listeners;
123      this.listeners = null;
124      for (PortListener listener : listeners) {
125        try {
126          listener.stop();
127        } catch (Exception ignore) {
128        } finally {
129          map.remove(listener.getConnectionManager());
130        }
131      }
132    }
133  }
134}