com.sun.xml.wss.impl.c14n.ImageCanonicalizer Maven / Gradle / Ivy

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This module contains the Metro WSIT runtime code.
There is a newer version: 4.0.4
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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/*
 * $Id: ImageCanonicalizer.java,v 1.2 2010-10-21 15:37:19 snajper Exp $
 * $Revision: 1.2 $
 * $Date: 2010-10-21 15:37:19 $
 */

package com.sun.xml.wss.impl.c14n;

import com.sun.xml.wss.XWSSecurityException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.logging.Level;

/**
 * Section 4.2 on Image Media types in RFC 2046
 * http://www.rfc-editor.org/rfc/rfc2046.txt
 * does not specify any rules for image canonicalization.
 *
 * So assuming that this binary data need not be canonicalized.
 *
 * @author  XWS-Security Team
 */
public class ImageCanonicalizer extends Canonicalizer {
    
    public ImageCanonicalizer() {}
    
    public ImageCanonicalizer(String charset) {
        super(charset);
    }
    
    /*
     * RFC 3851 says - http://www.rfc-archive.org/getrfc.php?rfc=3851
     * Other than text types, most types
     * have only one representation regardless of computing platform or
     * environment which can be considered their canonical representation.
     *
     * So right now we are just serializing the attachment for gif data types.
     *
     */
    public byte[] canonicalize(byte[] input) throws XWSSecurityException {
        return input;
    }
    
    public InputStream canonicalize(InputStream input,OutputStream outputStream)
    throws javax.xml.crypto.dsig.TransformException  {
        try{
            if(outputStream == null){
                return input;
            }else{
                byte [] data = new byte[128];
                while(true){
                    int len = input.read(data);
                    if(len <= 0)
                        break;
                    outputStream.write(data,0,len);
                }
            }
        }catch(Exception ex){
            log.log(Level.SEVERE, "WSS1001.error.canonicalizing.image", 
                    new Object[] {ex.getMessage()});
            throw new javax.xml.crypto.dsig.TransformException(ex.getMessage());
        }
        return null;
    }
}