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 net.sourceforge.guacamole.net.auth.AuthenticationProvider;
  22 import javax.servlet.ServletException;
  23 import javax.servlet.http.HttpServletRequest;
  24 import javax.servlet.http.HttpSession;
  25 import net.sourceforge.guacamole.GuacamoleException;
  26 import net.sourceforge.guacamole.net.InetGuacamoleSocket;
  27 import net.sourceforge.guacamole.protocol.GuacamoleConfiguration;
  28 import net.sourceforge.guacamole.properties.GuacamoleProperties;
  29 import net.sourceforge.guacamole.net.GuacamoleSocket;
  30 import net.sourceforge.guacamole.servlet.GuacamoleSession;
  31 import net.sourceforge.guacamole.net.GuacamoleTunnel;
  32 import net.sourceforge.guacamole.net.auth.UserConfiguration;
  33 import net.sourceforge.guacamole.net.basic.properties.BasicGuacamoleProperties;
  34 import net.sourceforge.guacamole.protocol.ConfiguredGuacamoleSocket;
  35 import net.sourceforge.guacamole.servlet.GuacamoleTunnelServlet;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38
  39 public class BasicGuacamoleTunnelServlet extends GuacamoleTunnelServlet {
  40
  41     private Logger logger = LoggerFactory.getLogger(BasicGuacamoleTunnelServlet.class);
  42
  43     private AuthenticationProvider authProvider;
  44
  45     @Override
  46     public void init() throws ServletException {
  47
  48         // Get auth provider instance
  49         try {
  50             authProvider = GuacamoleProperties.getProperty(BasicGuacamoleProperties.AUTH_PROVIDER);
  51         }
  52         catch (GuacamoleException e) {
  53             logger.error("Error getting authentication provider from properties.", e);
  54             throw new ServletException(e);
  55         }
  56
  57     }
  58
  59     @Override
  60     protected GuacamoleTunnel doConnect(HttpServletRequest request) throws GuacamoleException {
  61
  62         HttpSession httpSession = request.getSession(true);
  63
  64         // Get ID of connection
  65         String id = request.getParameter("id");
  66
  67         // Get authorized configs
  68         UserConfiguration userConfig = (UserConfiguration)
  69                 httpSession.getAttribute("GUAC_USER_CONFIG");
  70
  71         // If no configs in session, not authorized
  72         if (userConfig == null)
  73             throw new GuacamoleException("No authorized configurations.");
  74
  75         // Get authorized config
  76         GuacamoleConfiguration config = userConfig.getConfiguration(id);
  77         if (config == null) {
  78             logger.error("Error retrieving authorized configuration id={}.", id);
  79             throw new GuacamoleException("Unknown configuration ID.");
  80         }
  81
  82         logger.info("Successful connection from {} to \"{}\".", request.getRemoteAddr(), id);
  83
  84         // Configure and connect socket
  85         String hostname = GuacamoleProperties.getProperty(GuacamoleProperties.GUACD_HOSTNAME);
  86         int port = GuacamoleProperties.getProperty(GuacamoleProperties.GUACD_PORT);
  87
  88         GuacamoleSocket socket = new ConfiguredGuacamoleSocket(
  89                 new InetGuacamoleSocket(hostname, port),
  90                 config
  91         );
  92
  93         // Associate socket with tunnel
  94         GuacamoleTunnel tunnel = new GuacamoleTunnel(socket);
  95
  96         // Attach tunnel to session
  97         GuacamoleSession session = new GuacamoleSession(httpSession);
  98         session.attachTunnel(tunnel);
  99
 100         return tunnel;
 101
 102     }
 103
 104 }
 105