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Posted to cvs@cocoon.apache.org by gr...@locus.apache.org on 2000/12/08 23:47:52 UTC
cvs commit: xml-cocoon/src/org/apache/cocoon/processor LinkEncodingProcessor.java
greenrd 00/12/08 14:47:51
Added: src/org/apache/cocoon/processor LinkEncodingProcessor.java
Log:
for encoding sessions in all links
Revision Changes Path
1.1 xml-cocoon/src/org/apache/cocoon/processor/LinkEncodingProcessor.java
Index: LinkEncodingProcessor.java
===================================================================
/*-- $Id: LinkEncodingProcessor.java,v 1.1 2000/12/08 22:47:50 greenrd Exp $ --
============================================================================
The Apache Software License, Version 1.1
============================================================================
Copyright (C) @year@ The Apache Software Foundation. All rights reserved.
Redistribution and use in source and binary forms, with or without modifica-
tion, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. The end-user documentation included with the redistribution, if any, must
include the following acknowledgment: "This product includes software
developed by the Apache Software Foundation (http://www.apache.org/)."
Alternately, this acknowledgment may appear in the software itself, if
and wherever such third-party acknowledgments normally appear.
4. The names "Cocoon" and "Apache Software Foundation" must not be used to
endorse or promote products derived from this software without prior
written permission. For written permission, please contact
apache@apache.org.
5. Products derived from this software may not be called "Apache", nor may
"Apache" appear in their name, without prior written permission of the
Apache Software Foundation.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
This software consists of voluntary contributions made by many individuals
on behalf of the Apache Software Foundation and was originally created by
Stefano Mazzocchi <st...@apache.org>. For more information on the Apache
Software Foundation, please see <http://www.apache.org/>.
*/
package org.apache.cocoon.processor;
import java.net.*;
import java.util.Dictionary;
import org.w3c.dom.*;
import javax.servlet.http.*;
import org.apache.cocoon.collections.Predicate;
import org.apache.cocoon.framework.*;
/**
* This class implements a LinkEncodingProcessor which encodes all URLs
* found in attributes specified by a Predicate. It is useful for use
* with cookie-less clients. You could use Xalan extension functions instead,
* but this is probably easier and faster, and doesn't require the use of
* Xalan-specific features in your stylesheet.
*
* @author <a href="mailto:greenrd@hotmail.com">Robin Green</a>
* @version $Revision: 1.1 $ $Date: 2000/12/08 22:47:50 $
*/
public class LinkEncodingProcessor implements Processor, Status {
public void init (Director director) {
}
public Document process(Document document, Dictionary parameters) throws Exception {
HttpServletRequest request = (HttpServletRequest) parameters.get ("request");
HttpServletResponse response = (HttpServletResponse) parameters.get ("response");
recurse (document.getDocumentElement (),
new DefaultLinkPredicate (request),
response);
return document;
}
protected void recurse
(Element e, Predicate linkPredicate, HttpServletResponse response) {
NodeList nl = e.getElementsByTagName ("*"); // all elements, recursively
int n = nl.getLength ();
for (int j = 0; j < n; j++) {
NamedNodeMap atts = e.getAttributes ();
int m = atts.getLength ();
for (int i = 0; i < n; i++) {
Attr att = (Attr) atts.item (i);
if (linkPredicate.matches (att)) {
// Have to use deprecated method for servlet-2.1 API compatibility
att.setValue (response.encodeUrl (att.getValue ()));
}
}
}
}
public boolean hasChanged (Object request) {
return true;
}
/**
* Matches href attributes which point to the same hostname as the request
* (implicitly or explicitly) and are well-formed URLs.
*/
private class DefaultLinkPredicate implements Predicate {
protected URL requestBase;
protected String hostName;
public DefaultLinkPredicate (HttpServletRequest request)
throws MalformedURLException {
this.requestBase = new URL (request.getRequestURI ());
this.hostName = requestBase.getHost ();
}
public boolean matches (Object x) {
Attr attr = (Attr) x;
if (!attr.getName ().equals ("href")) return false;
String href = attr.getValue ();
try {
return new URL (requestBase, href).getHost ().equals (hostName);
}
catch (MalformedURLException ex) {
return false;
}
}
}
public String getStatus () {
return "Link Encoding Processor";
}
}