001    /*
002     * Copyright (C) 2003-2009 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;
021    
022    import org.crsh.plugin.*;
023    import org.crsh.telnet.term.TelnetLifeCycle;
024    import org.crsh.vfs.Resource;
025    
026    import java.net.URL;
027    import java.util.Collections;
028    
029    /**
030     * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
031     * @version $Revision$
032     */
033    public class TelnetPlugin extends CRaSHPlugin<TelnetPlugin> {
034    
035      /** . */
036      public static final PropertyDescriptor<Integer> TELNET_PORT = PropertyDescriptor.create("telnet.port", 5000, "The telnet port");
037    
038      /** . */
039      private TelnetLifeCycle lifeCycle;
040    
041      @Override
042      public TelnetPlugin getImplementation() {
043        return this;
044      }
045    
046      @Override
047      protected Iterable<PropertyDescriptor<?>> createConfigurationCapabilities() {
048        return Collections.<PropertyDescriptor<?>>singletonList(TELNET_PORT);
049      }
050    
051      @Override
052      public void init() {
053        PluginContext context = getContext();
054    
055        //
056        URL configURL = TelnetPlugin.class.getResource("telnet.properties");
057        if (configURL != null) {
058          log.debug("Found embedded telnet config url " + configURL);
059        }
060    
061        // Override from config if any
062        Resource res = getContext().loadResource("telnet.properties", ResourceKind.CONFIG);
063        if (res != null) {
064          configURL = res.getURL();
065          log.debug("Found telnet config url " + configURL);
066        }
067    
068        //
069        if (configURL == null) {
070          log.info("Could not boot Telnet due to missing config");
071          return;
072        }
073    
074        //
075        TelnetLifeCycle lifeCycle = new TelnetLifeCycle(context);
076        lifeCycle.setConfigURL(configURL);
077        Integer port = context.getProperty(TELNET_PORT);
078        if (port != null) {
079          lifeCycle.setPort(port);
080        }
081    
082        //
083        lifeCycle.init();
084    
085        //
086        this.lifeCycle = lifeCycle;
087      }
088    
089      @Override
090      public void destroy() {
091        if (lifeCycle != null) {
092          lifeCycle.destroy();
093        }
094      }
095    }