| /* |
| * 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 (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved. |
| */ |
| /* |
| * $Id: DOMXPathTransform.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 javax.xml.crypto.dsig.spec.XPathFilterParameterSpec; |
| import java.security.InvalidAlgorithmParameterException; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.HashMap; |
| import org.w3c.dom.Attr; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.NamedNodeMap; |
| |
| /** |
| * DOM-based implementation of XPath Filtering Transform. |
| * (Uses Apache XML-Sec Transform implementation) |
| * |
| * @author Sean Mullan |
| */ |
| public final class DOMXPathTransform extends ApacheTransform { |
| |
| public void init(TransformParameterSpec params) |
| throws InvalidAlgorithmParameterException { |
| if (params == null) { |
| throw new InvalidAlgorithmParameterException("params are required"); |
| } else if (!(params instanceof XPathFilterParameterSpec)) { |
| throw new InvalidAlgorithmParameterException |
| ("params must be of type XPathFilterParameterSpec"); |
| } |
| this.params = params; |
| } |
| |
| public void init(XMLStructure parent, XMLCryptoContext context) |
| throws InvalidAlgorithmParameterException { |
| |
| super.init(parent, context); |
| unmarshalParams(DOMUtils.getFirstChildElement(transformElem)); |
| } |
| |
| private void unmarshalParams(Element paramsElem) { |
| String xPath = paramsElem.getFirstChild().getNodeValue(); |
| // create a Map of namespace prefixes |
| NamedNodeMap attributes = paramsElem.getAttributes(); |
| if (attributes != null) { |
| int length = attributes.getLength(); |
| Map namespaceMap = new HashMap(length); |
| for (int i = 0; i < length; i++) { |
| Attr attr = (Attr) attributes.item(i); |
| String prefix = attr.getPrefix(); |
| if (prefix != null && prefix.equals("xmlns")) { |
| namespaceMap.put(attr.getLocalName(), attr.getValue()); |
| } |
| } |
| this.params = new XPathFilterParameterSpec(xPath, namespaceMap); |
| } else { |
| this.params = new XPathFilterParameterSpec(xPath); |
| } |
| } |
| |
| public void marshalParams(XMLStructure parent, XMLCryptoContext context) |
| throws MarshalException { |
| |
| super.marshalParams(parent, context); |
| XPathFilterParameterSpec xp = |
| (XPathFilterParameterSpec) getParameterSpec(); |
| Element xpathElem = DOMUtils.createElement |
| (ownerDoc, "XPath", XMLSignature.XMLNS, |
| DOMUtils.getSignaturePrefix(context)); |
| xpathElem.appendChild(ownerDoc.createTextNode(xp.getXPath())); |
| |
| // add namespace attributes, if necessary |
| Iterator i = xp.getNamespaceMap().entrySet().iterator(); |
| while (i.hasNext()) { |
| Map.Entry entry = (Map.Entry) i.next(); |
| xpathElem.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:" |
| + (String) entry.getKey(), (String) entry.getValue()); |
| } |
| |
| transformElem.appendChild(xpathElem); |
| } |
| } |