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Java > Open Source Codes > org > apache > catalina > valves > RemoteHostValve


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18
19 package org.apache.catalina.valves;
20
21
22 import java.io.IOException JavaDoc;
23 import javax.servlet.ServletException JavaDoc;
24 import org.apache.catalina.connector.Request;
25 import org.apache.catalina.connector.Response;
26
27
28 /**
29  * Concrete implementation of <code>RequestFilterValve</code> that filters
30  * based on the remote client's host name.
31  *
32  * @author Craig R. McClanahan
33  * @version $Revision: 467222 $ $Date: 2006-10-24 05:17:11 +0200 (mar., 24 oct. 2006) $
34  */
35
36 public final class RemoteHostValve
37     extends RequestFilterValve {
38
39
40     // ----------------------------------------------------- Instance Variables
41
42
43     /**
44      * The descriptive information related to this implementation.
45      */
46     private static final String JavaDoc info =
47         "org.apache.catalina.valves.RemoteHostValve/1.0";
48
49
50     // ------------------------------------------------------------- Properties
51
52
53     /**
54      * Return descriptive information about this Valve implementation.
55      */
56     public String JavaDoc getInfo() {
57
58         return (info);
59
60     }
61
62
63     // --------------------------------------------------------- Public Methods
64
65
66     /**
67      * Extract the desired request property, and pass it (along with the
68      * specified request and response objects) to the protected
69      * <code>process()</code> method to perform the actual filtering.
70      * This method must be implemented by a concrete subclass.
71      *
72      * @param request The servlet request to be processed
73      * @param response The servlet response to be created
74      *
75      * @exception IOException if an input/output error occurs
76      * @exception ServletException if a servlet error occurs
77      */
78     public void invoke(Request request, Response response)
79         throws IOException JavaDoc, ServletException JavaDoc {
80
81         process(request.getRequest().getRemoteHost(), request, response);
82
83     }
84
85
86 }
87
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