/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.xml.security.samples.transforms;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathFactory;
import org.apache.xml.security.signature.XMLSignatureInput;
import org.apache.xml.security.samples.DSNamespaceContext;
import org.apache.xml.security.samples.SampleUtils;
import org.apache.xml.security.transforms.Transforms;
import org.apache.xml.security.utils.Constants;
import org.apache.xml.security.utils.XMLUtils;
import org.w3c.dom.Element;
/**
* This class demonstrates the use of a Transform for XSLT. The
* <CODE>xsl:stylesheet</CODE> is directly embedded in the <CODE>ds:Transform</CODE>,
* so the {@link Transform} object is created by using the Element.
*
* @author Christian Geuer-Pollmann
* @version %I%, %G%
*/
public class SampleTransformChaining {
/**
* Method main
*
* @param args
* @throws Exception
*/
public static void main(String args[]) throws Exception {
String inputStr =
"<?xml version=\"1.0\"?>" + "\n"
+ "<Class>" + "\n"
+ " <BASE64>" + "\n"
+ " PGNvbnRhaW5lcj4KICAgPGU+SGVsbG8sIDwhLS0gY29tbWVudCAtLT4gd29ybGQhPC9lPgogICA8" + "\n"
+ " T3JkZXIgTmFtZT0nVElOQU1JRk9STUVTJyB4bWxucz0naHR0cDovL3NmZGZnLyc+CiAgICAgIDxG" + "\n"
+ " YW1pbHkgTmFtZT0nVElOQU1JREFFJz4KICAgICAgICAgPFNwZWNpZXMgU2NpZW50aWZpY19OYW1l" + "\n"
+ " PSdDcnlwdHVyZWxsdXMgYm91Y2FyZGknPlNsYXR5LWJyZWFzdGVkIFRpbmFtb3UuPC9TcGVjaWVz" + "\n"
+ " PgogICAgICA8L0ZhbWlseT4KICAgPC9PcmRlcj4KICAgPE9yZGVyIE5hbWU9J1BPRElDSVBFRElG" + "\n"
+ " T1JNRVMnLz4KPC9jb250YWluZXI+Cg==" + "\n"
+ " </BASE64>" + "\n"
+ "<Signature Id='SignatureToBeOmitted' xmlns='http://www.w3.org/2000/09/xmldsig#'>" + "\n"
+ " <SignedInfo>" + "\n"
+ " <Reference URI=''>" + "\n"
+ " <Transforms>" + "\n"
+ " <Transform Algorithm='http://www.w3.org/TR/1999/REC-xpath-19991116'>\n"
+ " <!-- Exclude all signatures -->\n"
+ " <ds:XPath xmlns:ds='http://www.w3.org/2000/09/xmldsig#'>\n"
+ " ancestor::BASE64"
+ " </ds:XPath>\n"
+ " </Transform>\n"
+ " <Transform Algorithm='http://www.w3.org/2000/09/xmldsig#base64' />\n"
+ " <Transform Algorithm='http://www.w3.org/TR/1999/REC-xpath-19991116'>\n"
+ " <ds:XPath xmlns:ds='http://www.w3.org/2000/09/xmldsig#'>\n"
+ " not(self::container) "
+ " </ds:XPath>\n"
+ " </Transform>\n"
+ " <Transform Algorithm='http://www.w3.org/TR/2001/REC-xml-c14n-20010315' />\n"
+ " </Transforms>" + "\n"
+ " </Reference>" + "\n"
+ " </SignedInfo>" + "\n"
+ " </Signature>"
+ "</Class>" + "\n"
;
org.apache.xml.security.Init.init();
javax.xml.parsers.DocumentBuilderFactory dbf =
javax.xml.parsers.DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
javax.xml.parsers.DocumentBuilder db = dbf.newDocumentBuilder();
org.w3c.dom.Document doc =
db.parse(new java.io.ByteArrayInputStream(inputStr.getBytes()));
XPathFactory xpf = XPathFactory.newInstance();
XPath xpath = xpf.newXPath();
xpath.setNamespaceContext(new DSNamespaceContext());
String expression = "//ds:Transforms[1]";
Element transformsElement =
(Element) xpath.evaluate(expression, doc, XPathConstants.NODE);
Transforms transforms = new Transforms(transformsElement, "memory://");
XMLSignatureInput input = new XMLSignatureInput(doc);
// execute Transforms
XMLSignatureInput result = transforms.performTransforms(input);
// output result
System.out.println(new String(result.getBytes()));
}
}