/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, 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 "<WebSig>" 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 (INCLUDING, 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 based on software copyright (c) 2001, Institute for
* Data Communications Systems, <http://www.nue.et-inf.uni-siegen.de/>.
* The development of this software was partly funded by the European
* Commission in the <WebSig> project in the ISIS Programme.
* For more information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.xml.security.transforms.implementations;
import java.io.IOException;
import java.io.ByteArrayInputStream;
import org.apache.xml.security.signature.XMLSignatureInput;
import org.apache.xml.security.exceptions.XMLSecurityException;
import org.apache.xml.security.utils.Constants;
import org.apache.xml.security.c14n.*;
import org.apache.xml.security.c14n.implementations.*;
import org.apache.xml.security.transforms.*;
import org.apache.xml.security.transforms.params.InclusiveNamespaces;
import javax.xml.parsers.ParserConfigurationException;
import org.xml.sax.SAXException;
import org.w3c.dom.*;
/**
* Class TransformC14NExclusive
*
* @author $Author: vdkoogh $
* @version $Revision: 1.3 $
*/
public class TransformC14NExclusive extends TransformSpi {
/** Field implementedTransformURI */
public static final String implementedTransformURI =
Transforms.TRANSFORM_C14N_EXCL_OMIT_COMMENTS;
//J-
public boolean wantsOctetStream () { return false; }
public boolean wantsNodeSet () { return true; }
public boolean returnsOctetStream () { return true; }
public boolean returnsNodeSet () { return false; }
//J+
/**
* Method engineGetURI
*
*
*/
protected String engineGetURI() {
return this.implementedTransformURI;
}
/**
* Method enginePerformTransform
*
* @param input
*
* @throws CanonicalizationException
* @throws InvalidCanonicalizerException
*/
protected XMLSignatureInput enginePerformTransform(XMLSignatureInput input)
throws CanonicalizationException, InvalidCanonicalizerException {
try {
InclusiveNamespaces inclusiveNamespaces = null;
if (this._transformObject
.length(InclusiveNamespaces
.ExclusiveCanonicalizationNamespace, InclusiveNamespaces
._TAG_EC_INCLUSIVENAMESPACES) == 1) {
Element inclusiveElement =
this._transformObject.getChildElementLocalName(0,
InclusiveNamespaces.ExclusiveCanonicalizationNamespace,
InclusiveNamespaces._TAG_EC_INCLUSIVENAMESPACES);
inclusiveNamespaces = new InclusiveNamespaces(inclusiveElement,
this._transformObject.getBaseURI());
}
Canonicalizer20010315ExclOmitComments c14n =
new Canonicalizer20010315ExclOmitComments();
if (input.isOctetStream()) {
return new XMLSignatureInput(c14n
.engineCanonicalize(input.getBytes()));
} else {
if (inclusiveNamespaces == null) {
return new XMLSignatureInput(c14n
.engineCanonicalizeXPathNodeSet(input.getNodeSet()));
} else {
return new XMLSignatureInput(c14n
.engineCanonicalizeXPathNodeSet(input
.getNodeSet(), inclusiveNamespaces
.getInclusiveNamespaces()));
}
}
} catch (IOException ex) {
throw new CanonicalizationException("empty", ex);
} catch (ParserConfigurationException ex) {
throw new CanonicalizationException("empty", ex);
} catch (XMLSecurityException ex) {
throw new CanonicalizationException("empty", ex);
} catch (SAXException ex) {
throw new CanonicalizationException("empty", ex);
}
}
}