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/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* Copyright 2005 The Apache Software Foundation.
*
* Licensed 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.
*
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
*/
/*
* $Id: DOMCanonicalXMLC14NMethod.java,v 1.2 2008/07/24 15:20:32 mullan Exp $
*/
package org.jcp.xml.dsig.internal.dom;
import javax.xml.crypto.*;
import javax.xml.crypto.dsig.*;
import javax.xml.crypto.dsig.spec.TransformParameterSpec;
import java.security.InvalidAlgorithmParameterException;
import com.sun.org.apache.xml.internal.security.c14n.Canonicalizer;
import com.sun.org.apache.xml.internal.security.c14n.InvalidCanonicalizerException;
/**
* DOM-based implementation of CanonicalizationMethod for Canonical XML
* (with or without comments). Uses Apache XML-Sec Canonicalizer.
*
* @author Sean Mullan
*/
public final class DOMCanonicalXMLC14NMethod extends ApacheCanonicalizer {
public void init(TransformParameterSpec params)
throws InvalidAlgorithmParameterException {
if (params != null) {
throw new InvalidAlgorithmParameterException("no parameters " +
"should be specified for Canonical XML C14N algorithm");
}
}
public Data transform(Data data, XMLCryptoContext xc)
throws TransformException {
// ignore comments if dereferencing same-document URI that requires
// you to omit comments, even if the Transform says otherwise -
// this is to be compliant with section 4.3.3.3 of W3C Rec.
if (data instanceof DOMSubTreeData) {
DOMSubTreeData subTree = (DOMSubTreeData) data;
if (subTree.excludeComments()) {
try {
apacheCanonicalizer = Canonicalizer.getInstance
(CanonicalizationMethod.INCLUSIVE);
} catch (InvalidCanonicalizerException ice) {
throw new TransformException
("Couldn't find Canonicalizer for: " +
CanonicalizationMethod.INCLUSIVE + ": " +
ice.getMessage(), ice);
}
}
}
return canonicalize(data, xc);
}
}
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