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/*
* DOMSTRTransform.java
*
* Created on February 22, 2005, 2:18 PM
*/
package com.sun.xml.wss.impl.transform;
import com.sun.xml.wss.impl.XMLUtil;
import com.sun.xml.wss.impl.MessageConstants;
import com.sun.xml.wss.logging.LogDomainConstants;
import com.sun.xml.wss.logging.impl.dsig.LogStringsMessages;
import java.io.OutputStream;
import java.security.InvalidAlgorithmParameterException;
import java.security.spec.AlgorithmParameterSpec;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.crypto.Data;
import javax.xml.crypto.MarshalException;
import javax.xml.crypto.XMLCryptoContext;
import javax.xml.crypto.XMLStructure;
import javax.xml.crypto.dom.DOMStructure;
import javax.xml.crypto.dsig.CanonicalizationMethod;
import javax.xml.crypto.dsig.TransformService;
import javax.xml.crypto.dsig.XMLSignature;
import javax.xml.crypto.dsig.spec.C14NMethodParameterSpec;
import javax.xml.crypto.dsig.spec.TransformParameterSpec;
import javax.xml.crypto.dsig.TransformException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
*
* @author K.Venugopal@sun.com
* @author Sean Mullan
*/
public class DOMSTRTransform extends TransformService {
private STRTransformParameterSpec params;
private static Logger logger = Logger.getLogger(LogDomainConstants.IMPL_SIGNATURE_DOMAIN,
LogDomainConstants.IMPL_SIGNATURE_DOMAIN_BUNDLE);
public static final String WSSE =
"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd";
public static final String WSU =
"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd";
public void init(TransformParameterSpec params) throws InvalidAlgorithmParameterException {
if (params == null) {
throw new InvalidAlgorithmParameterException("params are required");
}
this.params = (STRTransformParameterSpec) params;
}
public void init(javax.xml.crypto.XMLStructure params, javax.xml.crypto.XMLCryptoContext xMLCryptoContext)
throws java.security.InvalidAlgorithmParameterException {
DOMStructure domParams = (DOMStructure) params;
try {
unmarshalParams(domParams.getNode(), xMLCryptoContext);
} catch (MarshalException me) {
throw new InvalidAlgorithmParameterException(me.getMessage());
}
}
public java.security.spec.AlgorithmParameterSpec getParameterSpec() {
return params;
}
public void marshalParams(XMLStructure parent, XMLCryptoContext context) throws MarshalException {
Node pn = ((DOMStructure) parent).getNode();
Document ownerDoc = XMLUtil.getOwnerDocument(pn);
String prefix = null;
String dsPrefix = null;
if (context != null) {
prefix = context.getNamespacePrefix
(WSSE, "wsse");
dsPrefix = context.getNamespacePrefix
(XMLSignature.XMLNS, context.getDefaultNamespacePrefix());
}
Element transformParamElem =XMLUtil.createElement
(ownerDoc, "TransformationParameters", WSSE, prefix);
CanonicalizationMethod cm = params.getCanonicalizationMethod();
Element c14nElem = XMLUtil.createElement
(ownerDoc, "CanonicalizationMethod", XMLSignature.XMLNS, dsPrefix);
c14nElem.setAttributeNS(null, "Algorithm", cm.getAlgorithm());
C14NMethodParameterSpec cs =
(C14NMethodParameterSpec) cm.getParameterSpec();
if (cs != null) {
TransformService cmSpi = null;
try {
cmSpi = TransformService.getInstance( cm.getAlgorithm(),"DOM");
cmSpi.init(cs);
cmSpi.marshalParams(new DOMStructure(c14nElem), context);
} catch (Exception e) {
logger.log(Level.SEVERE,LogStringsMessages.WSS_1321_STR_MARSHAL_TRANSFORM_ERROR(),e);
throw new MarshalException(e);
}
}
transformParamElem.appendChild(c14nElem);
pn.appendChild(transformParamElem);
}
public javax.xml.crypto.Data transform(javax.xml.crypto.Data data, javax.xml.crypto.XMLCryptoContext xc) throws javax.xml.crypto.dsig.TransformException {
java.io.OutputStream outputStream = null;
return new STRTransformImpl().transform(data,xc,outputStream);
}
public javax.xml.crypto.Data transform(javax.xml.crypto.Data data, javax.xml.crypto.XMLCryptoContext xc, java.io.OutputStream outputStream) throws javax.xml.crypto.dsig.TransformException {
//throw new UnsupportedOperationException();
return new STRTransformImpl().transform(data,xc,outputStream);
}
public void unmarshalParams(XMLStructure parent, XMLCryptoContext context)
throws MarshalException ,java.security.InvalidAlgorithmParameterException{
Element transformElem = (Element) ((DOMStructure) parent).getNode();
Element tpElem = XMLUtil.getFirstChildElement(transformElem);
unmarshalParams(tpElem, context);
}
private void unmarshalParams(Node tpElem, XMLCryptoContext context)
throws MarshalException,java.security.InvalidAlgorithmParameterException {
Element c14nElem = null;
if(tpElem.getNodeType() == Node.DOCUMENT_NODE){
c14nElem =(Element) ((Document)tpElem).getFirstChild();
}else{
c14nElem = XMLUtil.getFirstChildElement(tpElem);
}
if(!"CanonicalizationMethod".equals(c14nElem.getLocalName())){
NodeList nl = c14nElem.getElementsByTagNameNS(MessageConstants.DSIG_NS, "CanonicalizationMethod");
if(nl.getLength() >0)c14nElem = (Element)nl.item(0);
}
if(c14nElem == null){
throw new java.security.InvalidAlgorithmParameterException("Cannont find CanonicalizationMethod in TransformationParameters element");
}
String c14nAlg = c14nElem.getAttributeNodeNS(null, "Algorithm").getValue();
if (logger.isLoggable(Level.FINE)) {
logger.log(Level.FINE, "C14 Algo="+c14nAlg);
}
C14NMethodParameterSpec cs = null;
Element paramsElem = XMLUtil.getFirstChildElement(c14nElem);
javax.xml.crypto.dsig.TransformService cmSpi = null;
try {
cmSpi = javax.xml.crypto.dsig.TransformService.getInstance(c14nAlg, "DOM");
if (paramsElem != null) {
cmSpi.init(new DOMStructure(paramsElem), context);
//cs = (C14NMethodParameterSpec) cmSpi.getParameterSpec();
}
CanonicalizationMethod cm = new STRC14NMethod(cmSpi);
this.params = new STRTransformParameterSpec( cm);
} catch (Throwable e) {
logger.log(Level.SEVERE,LogStringsMessages.WSS_1320_STR_UN_TRANSFORM_ERROR(),e);
throw new MarshalException(e);
}
}
public boolean isFeatureSupported(String str) {
return false;
}
private static class STRC14NMethod implements CanonicalizationMethod {
private javax.xml.crypto.dsig.TransformService cmSpi;
STRC14NMethod(javax.xml.crypto.dsig.TransformService cmSpi) {
this.cmSpi = cmSpi;
}
public String getAlgorithm() { return cmSpi.getAlgorithm(); }
public AlgorithmParameterSpec getParameterSpec() {
return cmSpi.getParameterSpec();
}
public boolean isFeatureSupported(String feature) { return false; }
public Data transform(Data data, XMLCryptoContext context) throws TransformException {
return cmSpi.transform(data, context);
}
public Data transform(Data data, XMLCryptoContext context, OutputStream os) throws TransformException {
return cmSpi.transform(data, context, os);
}
}
public static class STRTransformParameterSpec implements TransformParameterSpec {
private CanonicalizationMethod c14nMethod;
public STRTransformParameterSpec(CanonicalizationMethod c14nMethod) {
this.c14nMethod = c14nMethod;
}
public CanonicalizationMethod getCanonicalizationMethod() {
return c14nMethod;
}
}
}