src/main/java/net/sourceforge/guacamole/net/basic/BasicGuacamoleTunnelServlet.java

   1 package net.sourceforge.guacamole.net.basic;
   2
   3 /*
   4  *  Guacamole - Clientless Remote Desktop
   5  *  Copyright (C) 2010  Michael Jumper
   6  *
   7  *  This program is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU Affero General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU Affero General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU Affero General Public License
  18  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 import java.io.IOException;
  22 import java.util.Map;
  23 import javax.servlet.ServletException;
  24 import javax.servlet.http.HttpServletRequest;
  25 import javax.servlet.http.HttpServletResponse;
  26 import javax.servlet.http.HttpSession;
  27 import net.sourceforge.guacamole.GuacamoleException;
  28 import net.sourceforge.guacamole.net.InetGuacamoleSocket;
  29 import net.sourceforge.guacamole.protocol.GuacamoleConfiguration;
  30 import net.sourceforge.guacamole.properties.GuacamoleProperties;
  31 import net.sourceforge.guacamole.net.GuacamoleSocket;
  32 import net.sourceforge.guacamole.net.GuacamoleTunnel;
  33 import net.sourceforge.guacamole.net.auth.Credentials;
  34 import net.sourceforge.guacamole.protocol.ConfiguredGuacamoleSocket;
  35 import net.sourceforge.guacamole.servlet.GuacamoleHTTPTunnelServlet;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38
  39 /**
  40  * Connects users to a tunnel associated with the authorized configuration
  41  * having the given ID.
  42  *
  43  * @author Michael Jumper
  44  */
  45 public class BasicGuacamoleTunnelServlet extends AuthenticatingHttpServlet {
  46
  47     private Logger logger = LoggerFactory.getLogger(BasicGuacamoleTunnelServlet.class);
  48
  49     @Override
  50     protected void authenticatedService(
  51             Map<String, GuacamoleConfiguration> configs,
  52             HttpServletRequest request, HttpServletResponse response)
  53     throws IOException, ServletException {
  54
  55         // If authenticated, respond as tunnel
  56         tunnelServlet.service(request, response);
  57
  58     }
  59
  60     /**
  61      * Wrapped GuacamoleHTTPTunnelServlet which will handle all authenticated
  62      * requests.
  63      */
  64     private GuacamoleHTTPTunnelServlet tunnelServlet = new GuacamoleHTTPTunnelServlet() {
  65
  66         @Override
  67         protected GuacamoleTunnel doConnect(HttpServletRequest request) throws GuacamoleException {
  68
  69             HttpSession httpSession = request.getSession(true);
  70
  71             // Get ID of connection
  72             String id = request.getParameter("id");
  73
  74             // Get credentials
  75             Credentials credentials = getCredentials(httpSession);
  76
  77             // Get authorized configs
  78             Map<String, GuacamoleConfiguration> configs = getConfigurations(httpSession);
  79
  80             // If no configs/credentials in session, not authorized
  81             if (credentials == null || configs == null)
  82                 throw new GuacamoleException("Cannot connect - user not logged in.");
  83
  84             // Get authorized config
  85             GuacamoleConfiguration config = configs.get(id);
  86             if (config == null) {
  87                 logger.error("Error retrieving authorized configuration id={}.", id);
  88                 throw new GuacamoleException("Unknown configuration ID.");
  89             }
  90
  91             logger.info("Successful connection from {} to \"{}\".", request.getRemoteAddr(), id);
  92
  93             // Configure and connect socket
  94             String hostname = GuacamoleProperties.getProperty(GuacamoleProperties.GUACD_HOSTNAME);
  95             int port = GuacamoleProperties.getProperty(GuacamoleProperties.GUACD_PORT);
  96
  97             GuacamoleSocket socket = new ConfiguredGuacamoleSocket(
  98                     new InetGuacamoleSocket(hostname, port),
  99                     config
 100             );
 101
 102             // Associate socket with tunnel
 103             GuacamoleTunnel tunnel = new GuacamoleTunnel(socket);
 104
 105             return tunnel;
 106
 107         }
 108
 109     };
 110
 111 }
 112