001: /*
002: * $Header: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/valves/RemoteHostValve.java,v 1.3 2001/07/22 20:25:15 pier Exp $
003: * $Revision: 1.3 $
004: * $Date: 2001/07/22 20:25:15 $
005: *
006: * ====================================================================
007: *
008: * The Apache Software License, Version 1.1
009: *
010: * Copyright (c) 1999-2001 The Apache Software Foundation. All rights
011: * reserved.
012: *
013: * Redistribution and use in source and binary forms, with or without
014: * modification, are permitted provided that the following conditions
015: * are met:
016: *
017: * 1. Redistributions of source code must retain the above copyright
018: * notice, this list of conditions and the following disclaimer.
019: *
020: * 2. Redistributions in binary form must reproduce the above copyright
021: * notice, this list of conditions and the following disclaimer in
022: * the documentation and/or other materials provided with the
023: * distribution.
024: *
025: * 3. The end-user documentation included with the redistribution, if
026: * any, must include the following acknowlegement:
027: * "This product includes software developed by the
028: * Apache Software Foundation (http://www.apache.org/)."
029: * Alternately, this acknowlegement may appear in the software itself,
030: * if and wherever such third-party acknowlegements normally appear.
031: *
032: * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
033: * Foundation" must not be used to endorse or promote products derived
034: * from this software without prior written permission. For written
035: * permission, please contact apache@apache.org.
036: *
037: * 5. Products derived from this software may not be called "Apache"
038: * nor may "Apache" appear in their names without prior written
039: * permission of the Apache Group.
040: *
041: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
042: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
043: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
044: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
045: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
046: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
047: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
048: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
049: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
050: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
051: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
052: * SUCH DAMAGE.
053: * ====================================================================
054: *
055: * This software consists of voluntary contributions made by many
056: * individuals on behalf of the Apache Software Foundation. For more
057: * information on the Apache Software Foundation, please see
058: * <http://www.apache.org/>.
059: *
060: * [Additional notices, if required by prior licensing conditions]
061: *
062: */
063:
064: package org.apache.catalina.valves;
065:
066: import java.io.IOException;
067: import javax.servlet.ServletException;
068: import org.apache.catalina.Request;
069: import org.apache.catalina.Response;
070: import org.apache.catalina.ValveContext;
071:
072: /**
073: * Concrete implementation of <code>RequestFilterValve</code> that filters
074: * based on the string representation of the remote client's IP address.
075: *
076: * @author Craig R. McClanahan
077: * @version $Revision: 1.3 $ $Date: 2001/07/22 20:25:15 $
078: */
079:
080: public final class RemoteHostValve extends RequestFilterValve {
081:
082: // ----------------------------------------------------- Instance Variables
083:
084: /**
085: * The descriptive information related to this implementation.
086: */
087: private static final String info = "org.apache.catalina.valves.RemoteHostValve/1.0";
088:
089: // ------------------------------------------------------------- Properties
090:
091: /**
092: * Return descriptive information about this Valve implementation.
093: */
094: public String getInfo() {
095:
096: return (info);
097:
098: }
099:
100: // --------------------------------------------------------- Public Methods
101:
102: /**
103: * Extract the desired request property, and pass it (along with the
104: * specified request and response objects) to the protected
105: * <code>process()</code> method to perform the actual filtering.
106: * This method must be implemented by a concrete subclass.
107: *
108: * @param request The servlet request to be processed
109: * @param response The servlet response to be created
110: * @param context The valve context used to invoke the next valve
111: * in the current processing pipeline
112: *
113: * @exception IOException if an input/output error occurs
114: * @exception ServletException if a servlet error occurs
115: */
116: public void invoke(Request request, Response response,
117: ValveContext context) throws IOException, ServletException {
118:
119: process(request.getRequest().getRemoteHost(), request,
120: response, context);
121:
122: }
123:
124: }
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