2009/05/20 - Apache Shale has been retired.

 /*

  * 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.

  */

 package org.apache.shale.application;

 import org.apache.shale.application.faces.ShaleWebContext;

 /**

  * <p>Command that filters incoming requests based on matching the remote

  * host name (or the remote address, if no remote host name is available)

  * against regular expression patterns that are configured on

  * this instance.  See {@link AbstractRegExpFilter} for details of the

  * matching algorithm.</p>

  *

  * <p><strong>USAGE NOTE:</strong> - This command will only be effective if

  * used before the regular filter chain is processed.  In other words, you

  * should invoke it as part of a <code>preprocess</code> chain in the

  * <code>shale</code> catalog.</p>

  *

  * $Id: RemoteHostFilter.java 464373 2006-10-16 04:21:54Z rahul $

  *

  * @see AbstractRegExpFilter

  */

 public class RemoteHostFilter extends AbstractRegExpFilter {

     // ------------------------------------------------------- Protected Methods

     /**

      * <p>Return the value to be tested against exclude and include patterns.

      * This will be the value of the <code>remoteHost</code> property (if any);

      * otherwise the value of the <code>remoteAddr</code> property.</p>

      *

      * @param context <code>Context</code> for the current request

      */

     protected String value(ShaleWebContext context) {

         String value = context.getRequest().getRemoteHost();

         if (value == null) {

             value = context.getRequest().getRemoteAddr();

         }

         return value;

     }

 }