gettunnelsaction.java

来自「这是linux下ssl vpn的实现程序」· Java 代码 · 共 104 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.tunnels.actions;

import java.util.Iterator;
import java.util.List;

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.CoreServlet;
import com.sslexplorer.core.actions.XMLOutputAction;
import com.sslexplorer.policyframework.PolicyUtil;
import com.sslexplorer.policyframework.ResourceUtil;
import com.sslexplorer.security.SystemDatabase;
import com.sslexplorer.security.User;
import com.sslexplorer.security.VPNSession;
import com.sslexplorer.tunnels.Tunnel;

/**
 * This action retrieves a list of available tunnels.
 * 
 * @author Brett Smith
 * @version $Revision$
 */
public class GetTunnelsAction extends XMLOutputAction {

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

    public GetTunnelsAction() {
        super();
    }

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

        try {
            // Get the VPN session
            VPNSession session = CoreServlet.getServlet().getLogonController().getVPNSession(request);

            // Check that we were returned a value
            if (session == null) {
                log.error(request.getRemoteHost() + " cannot get tunnels because the VPN session is invalid");
                sendError("Invalid VPN session!", response);
            } else {

                // Return any tunnels that should be started
                SystemDatabase sdb = CoreServlet.getServlet().getSystemDatabase();
                List tunnels = ResourceUtil.filterResources(session.getSessionInfo().getUser(), sdb.getTunnels(), false);
                Element tunnelsElement = new Element("tunnels");
                for (Iterator i = tunnels.iterator(); i.hasNext();) {
                    Tunnel tunnel = (Tunnel) i.next();
                    try {
                        Element tunnelElement = new Element("tunnel");
                        tunnelElement.setAttribute("id", String.valueOf(tunnel.getResourceId()));
                        tunnelElement.setAttribute("username", String.valueOf(tunnel.getUsername()));
                        tunnelElement.setAttribute("type", String.valueOf(tunnel.getType()));
                        tunnelElement.setAttribute("autoStart", String.valueOf(tunnel.isAutoStart()));
                        tunnelElement.setAttribute("transport", tunnel.getTransport());
                        tunnelElement.setAttribute("sourcePort", String.valueOf(tunnel.getSourcePort()));
                        tunnelElement.setAttribute("destinationPort", String.valueOf(tunnel.getDestination().getPort()));
                        tunnelElement.setAttribute("destinationHost", tunnel.getDestination().getHost());
                        tunnelElement.setAttribute("allowExternalHosts", String.valueOf(tunnel.isAllowExternalHosts()));
                        tunnelsElement.addContent(tunnelElement);
                    } catch (Exception e) {
                        log.warn("Failed to add tunnel.", e);
                    }
                }

                Document doc = new Document(tunnelsElement);
                sendDocument(doc, response);
            }
        } catch (Exception ex) {
            log.error("Request to get list of tunnels failed.", ex);
        }

        return null;
    }
}