content: /*
   * Copyright (C) 2014 Glyptodon LLC
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  package org.glyptodon.guacamole.protocol;
  
  import org.glyptodon.guacamole.GuacamoleException;
  import org.glyptodon.guacamole.io.GuacamoleReader;
  import org.glyptodon.guacamole.io.GuacamoleWriter;
  import org.glyptodon.guacamole.net.GuacamoleSocket;
  
  /**
   * Implementation of GuacamoleSocket which allows individual instructions to be
   * intercepted, overridden, etc.
   *
   * @author Michael Jumper
   */
  public class FilteredGuacamoleSocket implements GuacamoleSocket {
  
      /**
       * Wrapped GuacamoleSocket.
       */
      private final GuacamoleSocket socket;
  
      /**
       * A reader for the wrapped GuacamoleSocket which may be filtered.
       */
      private final GuacamoleReader reader;
      
      /**
       * A writer for the wrapped GuacamoleSocket which may be filtered.
       */
      private final GuacamoleWriter writer;
      
      /**
       * Creates a new FilteredGuacamoleSocket which uses the given filters to
       * determine whether instructions read/written are allowed through,
       * modified, etc. If reads or writes should be unfiltered, simply specify
       * null rather than a particular filter.
       *
       * @param socket The GuacamoleSocket to wrap.
       * @param readFilter The GuacamoleFilter to apply to all read instructions,
       *                   if any.
       * @param writeFilter The GuacamoleFilter to apply to all written 
       *                    instructions, if any.
       */
      public FilteredGuacamoleSocket(GuacamoleSocket socket, GuacamoleFilter readFilter, GuacamoleFilter writeFilter) {
          this.socket = socket;
  
          // Apply filter to reader
          if (readFilter != null)
              reader = new FilteredGuacamoleReader(socket.getReader(), readFilter);
          else
              reader = socket.getReader();
  
          // Apply filter to writer
          if (writeFilter != null)
              writer = new FilteredGuacamoleWriter(socket.getWriter(), writeFilter);
          else
              writer = socket.getWriter();
  
      }
      
      @Override
      public GuacamoleReader getReader() {
          return reader;
      }
  
      @Override
      public GuacamoleWriter getWriter() {
          return writer;
      }
  
      @Override
      public void close() throws GuacamoleException {
          socket.close();
      }
  
      @Override
      public boolean isOpen() {
          return socket.isOpen();
      }
      
  }
  