waitforvpnclientderegisteraction.java

这是linux下ssl vpn的实现程序

/*
 *  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.agent.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 com.sslexplorer.core.CoreServlet;
import com.sslexplorer.core.actions.AuthenticatedAction;
import com.sslexplorer.security.Constants;
import com.sslexplorer.security.SessionInfo;
import com.sslexplorer.security.VPNSession;

/**
 * An implementation of {@link com.sslexplorer.core.actions.AuthenticatedAction}
 * that blocks until the specified <i>SSL-Explorer Agent</i> or application
 * using the <i>Embedded Client API</i> has de-registered. 
 * <p>
 * This action is used during the logoff sequence when the user logoffs without
 * first shutting down their agent. 
 * 
 * @author Brett Smith <a href="mailto: [e-mail]">&lt;[e-mail]&gt;</a>
 */
public class WaitForVPNClientDeregisterAction extends AuthenticatedAction {

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

    /**
     * Constructor
     */
    public WaitForVPNClientDeregisterAction() {
        super();
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.sslexplorer.core.actions.AuthenticatedAction#onExecute(org.apache.struts.action.ActionMapping,
     *      org.apache.struts.action.ActionForm,
     *      javax.servlet.http.HttpServletRequest,
     *      javax.servlet.http.HttpServletResponse)
     */
    public ActionForward onExecute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)
                    throws Exception {

        VPNSession session = null;
        session = CoreServlet.getServlet().getLogonController().getPrimaryVPNSession(
                        CoreServlet.getServlet().getLogonController().getVPNSessionsByLogon(
                                        (String) request.getSession().getAttribute(Constants.LOGON_TICKET)));
        if (session != null) {
            synchronized (session) {
                if (CoreServlet.getServlet().getLogonController().isVPNSessionValid(session)) {
                	if (log.isInfoEnabled())
                		log.info("Waiting for SSL-Explorer Agent to de-register.");
                    session.wait(30000);
                    if (log.isInfoEnabled())
                    	log.info("SSL-Explorer Agent de-registered.");
                }
            }
        }
        String path = request.getParameter("path");
        return new ActionForward(path, true);
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.sslexplorer.core.actions.CoreAction#getNavigationContext(org.apache.struts.action.ActionMapping,
     *      org.apache.struts.action.ActionForm,
     *      javax.servlet.http.HttpServletRequest,
     *      javax.servlet.http.HttpServletResponse)
     */
    public int getNavigationContext(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) {
        return SessionInfo.MANAGEMENT_CONSOLE_CONTEXT | SessionInfo.USER_CONSOLE_CONTEXT;
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.sslexplorer.core.actions.AuthenticatedAction#requiresProfile()
     */
    protected boolean requiresProfile() {
        return false;
    }

}