package org.apache.archiva.webdav;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *  http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  import org.apache.archiva.admin.model.RepositoryAdminException;
  import org.apache.commons.lang.StringUtils;
  
  import javax.servlet.ServletConfig;
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import java.io.IOException;
  
  /**
   * UnauthenticatedRepositoryServlet
   *
   *
   */
  public class UnauthenticatedRepositoryServlet
      extends RepositoryServlet
  {
      @Override
      public synchronized void initServers( ServletConfig servletConfig )
      {
          try
          {
              super.initServers( servletConfig );
          }
          catch ( RepositoryAdminException e )
          {
              throw new RuntimeException( e.getMessage(), e );
          }
  
          UnauthenticatedDavSessionProvider sessionProvider = new UnauthenticatedDavSessionProvider();
          setDavSessionProvider( sessionProvider );
      }
  
      @Override
      protected void service( HttpServletRequest request, HttpServletResponse response )
          throws ServletException, IOException
      {
          String userAgent = request.getHeader( "User-Agent" );
  
          if ( StringUtils.isEmpty( userAgent ))
          {
              throw new ServletException( "User-Agent is not configured" );
          }
  
          super.service( request, response );
      }
  }