content: /*
   * Copyright (C) 2013 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.net.auth.simple;
  
  import java.util.Collections;
  import java.util.Set;
  import org.glyptodon.guacamole.GuacamoleException;
  import org.glyptodon.guacamole.GuacamoleSecurityException;
  import org.glyptodon.guacamole.net.auth.Directory;
  import org.glyptodon.guacamole.net.auth.User;
  
  /**
   * An extremely simple read-only implementation of a Directory of Users which
   * provides access to a single pre-defined User.
   *
   * @author Michael Jumper
   */
  public class SimpleUserDirectory implements Directory<String, User> {
  
      /**
       * The only user to be contained within this directory.
       */
      private User user;
  
      /**
       * Creates a new SimpleUserDirectory which provides access to the single
       * user provided.
       *
       * @param user The user to provide access to.
       */
      public SimpleUserDirectory(User user) {
          this.user = user;
      }
  
      @Override
      public User get(String username) throws GuacamoleException {
  
          // If username matches, return the user
          if (user.getUsername().equals(username))
              return user;
  
          // Otherwise, not found
          return null;
  
      }
  
      @Override
      public Set<String> getIdentifiers() throws GuacamoleException {
          return Collections.singleton(user.getUsername());
      }
  
      @Override
      public void add(User user) throws GuacamoleException {
          throw new GuacamoleSecurityException("Permission denied.");
      }
  
      @Override
      public void update(User user) throws GuacamoleException {
          throw new GuacamoleSecurityException("Permission denied.");
      }
  
      @Override
      public void remove(String username) throws GuacamoleException {
          throw new GuacamoleSecurityException("Permission denied.");
      }
  
      @Override
      public void move(String identifier, Directory<String, User> directory) 
              throws GuacamoleException {
          throw new GuacamoleSecurityException("Permission denied.");
      }
  
  }
  