deregisterclientaction.java

来自「这是linux下ssl vpn的实现程序」· Java 代码 · 共 100 行

/*
 *  SSL-Explorer
 *
 *  Copyright (C) 2003-2006 3SP LTD. All Rights Reserved
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2 of
 *  the License, or (at your option) any later version.
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public
 *  License along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
			
package com.sslexplorer.security.actions;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.jdom.Document;
import org.jdom.Element;

import com.sslexplorer.core.CoreEvent;
import com.sslexplorer.core.CoreEventConstants;
import com.sslexplorer.core.CoreServlet;
import com.sslexplorer.core.actions.XMLOutputAction;
import com.sslexplorer.security.VPNSession;

/**
 * When a VPN client is stopped it must connect to the SSL Explorer and
 * deregister itself by providing the VPN session ticket the user was allocated
 * when the client was started. This will allow the VPN client status to be
 * updated next time the page is updated.
 * 
 * @author Brett Smith
 * @version $Revision: 1.11 $
 */
public class DeregisterClientAction extends XMLOutputAction {

    static Log log = LogFactory.getLog(DeregisterClientAction.class);

    public DeregisterClientAction() {
    }

    public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)
                    throws Exception {

        // Get the pending VPN session ticket
        String ticket = request.getParameter("ticket");

        // Check the values and send error if incorrect
        if (ticket == null) {
            log.error("The client failed to provide a ticket");
            sendError("A VPN session ticket is requried", response);
        } else {
            log.error("Deregistering client VPN session for " + request.getRemoteHost());

            // Everything looks good so deregister the client
            VPNSession vpnSession = CoreServlet.getServlet().getLogonController().getVPNSessionByTicket(ticket);
            if (vpnSession == null) {
                // The ticket is invalid
                log.error("SSL-Explorer Agent " + request.getRemoteHost() + " provided an invalid ticket");
                sendError("SSL-Explorer Agent " + request.getRemoteHost() + " provided an invalid ticket", response);
            } else {
                try {
                    CoreServlet.getServlet().getLogonController().deregisterVPNClient(vpnSession);
    
                    if (log.isInfoEnabled())
                    	log.info("SSL-Explorer Agent " + request.getRemoteHost() + " has been deregistered");
    
                    Element root = new Element("success");
                    Document doc = new Document(root);
    
                    sendDocument(doc, response);

                }
                catch(Exception e) {
                    log.error("Failed to de-register SSL-Explorer Agent.", e);
                    sendError(e.getMessage(), response);
                    
                }
            }
        }

        // We have processed the output ourselves
        return null;
    }

}