package com.sun.org.apache.xml.internal.security.transforms.implementations;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Method;
import javax.xml.XMLConstants;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import com.sun.org.apache.xml.internal.security.exceptions.XMLSecurityException;
import com.sun.org.apache.xml.internal.security.signature.XMLSignatureInput;
import com.sun.org.apache.xml.internal.security.transforms.Transform;
import com.sun.org.apache.xml.internal.security.transforms.TransformSpi;
import com.sun.org.apache.xml.internal.security.transforms.TransformationException;
import com.sun.org.apache.xml.internal.security.transforms.Transforms;
import com.sun.org.apache.xml.internal.security.utils.XMLUtils;
import org.w3c.dom.Element;
public class TransformXSLT extends TransformSpi {
public static final String implementedTransformURI =
Transforms.TRANSFORM_XSLT;
static final String XSLTSpecNS = "http://www.w3.org/1999/XSL/Transform";
static final String defaultXSLTSpecNSprefix = "xslt";
static final String XSLTSTYLESHEET = "stylesheet";
static java.util.logging.Logger log =
java.util.logging.Logger.getLogger(
TransformXSLT.class.getName());
protected String engineGetURI() {
return implementedTransformURI;
}
protected XMLSignatureInput enginePerformTransform
(XMLSignatureInput input, Transform _transformObject)
throws IOException,
TransformationException {
return enginePerformTransform(input, null, _transformObject);
}
protected XMLSignatureInput enginePerformTransform(XMLSignatureInput input,OutputStream baos, Transform _transformObject)
throws IOException,
TransformationException {
try {
Element transformElement = _transformObject.getElement();
Element _xsltElement =
XMLUtils.selectNode(transformElement.getFirstChild(),
XSLTSpecNS,"stylesheet", 0);
if (_xsltElement == null) {
Object exArgs[] = { "xslt:stylesheet", "Transform" };
throw new TransformationException("xml.WrongContent", exArgs);
}
TransformerFactory tFactory = TransformerFactory.newInstance();
tFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING,
Boolean.TRUE);
Source xmlSource =
new StreamSource(new ByteArrayInputStream(input.getBytes()));
Source stylesheet;
{
ByteArrayOutputStream os = new ByteArrayOutputStream();
Transformer transformer = tFactory.newTransformer();
DOMSource source = new DOMSource(_xsltElement);
StreamResult result = new StreamResult(os);
transformer.transform(source, result);
stylesheet =
new StreamSource(new ByteArrayInputStream(os.toByteArray()));
}
Transformer transformer = tFactory.newTransformer(stylesheet);
try {
transformer.setOutputProperty
("{http://xml.apache.org/xalan}line-separator", "\n");
} catch (Exception e) {
log.log(java.util.logging.Level.WARNING, "Unable to set Xalan line-separator property: "
+ e.getMessage());
}
if (baos==null) {
ByteArrayOutputStream baos1 = new ByteArrayOutputStream();
StreamResult outputTarget = new StreamResult(baos1);
transformer.transform(xmlSource, outputTarget);
return new XMLSignatureInput(baos1.toByteArray());
}
StreamResult outputTarget = new StreamResult(baos);
transformer.transform(xmlSource, outputTarget);
XMLSignatureInput output=new XMLSignatureInput((byte[])null);
output.setOutputStream(baos);
return output;
} catch (XMLSecurityException ex) {
Object exArgs[] = { ex.getMessage() };
throw new TransformationException("generic.EmptyMessage", exArgs, ex);
} catch (TransformerConfigurationException ex) {
Object exArgs[] = { ex.getMessage() };
throw new TransformationException("generic.EmptyMessage", exArgs, ex);
} catch (TransformerException ex) {
Object exArgs[] = { ex.getMessage() };
throw new TransformationException("generic.EmptyMessage", exArgs, ex);
}
}
}