| /* |
| * 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. |
| * |
| */ |
| /* |
| * =========================================================================== |
| * |
| * (C) Copyright IBM Corp. 2003 All Rights Reserved. |
| * |
| * =========================================================================== |
| */ |
| /* |
| * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved. |
| */ |
| /* |
| * $Id: DOMXPathFilter2Transform.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.XPathType; |
| import javax.xml.crypto.dsig.spec.XPathFilter2ParameterSpec; |
| import java.security.InvalidAlgorithmParameterException; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| 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 Filter 2.0 Transform. |
| * (Uses Apache XML-Sec Transform implementation) |
| * |
| * @author Joyce Leung |
| */ |
| public final class DOMXPathFilter2Transform extends ApacheTransform { |
| |
| public void init(TransformParameterSpec params) |
| throws InvalidAlgorithmParameterException { |
| if (params == null) { |
| throw new InvalidAlgorithmParameterException("params are required"); |
| } else if (!(params instanceof XPathFilter2ParameterSpec)) { |
| throw new InvalidAlgorithmParameterException |
| ("params must be of type XPathFilter2ParameterSpec"); |
| } |
| this.params = params; |
| } |
| |
| public void init(XMLStructure parent, XMLCryptoContext context) |
| throws InvalidAlgorithmParameterException { |
| |
| super.init(parent, context); |
| try { |
| unmarshalParams(DOMUtils.getFirstChildElement(transformElem)); |
| } catch (MarshalException me) { |
| throw (InvalidAlgorithmParameterException) |
| new InvalidAlgorithmParameterException().initCause(me); |
| } |
| } |
| |
| private void unmarshalParams(Element curXPathElem) throws MarshalException { |
| List list = new ArrayList(); |
| while (curXPathElem != null) { |
| String xPath = curXPathElem.getFirstChild().getNodeValue(); |
| String filterVal = |
| DOMUtils.getAttributeValue(curXPathElem, "Filter"); |
| if (filterVal == null) { |
| throw new MarshalException("filter cannot be null"); |
| } |
| XPathType.Filter filter = null; |
| if (filterVal.equals("intersect")) { |
| filter = XPathType.Filter.INTERSECT; |
| } else if (filterVal.equals("subtract")) { |
| filter = XPathType.Filter.SUBTRACT; |
| } else if (filterVal.equals("union")) { |
| filter = XPathType.Filter.UNION; |
| } else { |
| throw new MarshalException("Unknown XPathType filter type" |
| + filterVal); |
| } |
| NamedNodeMap attributes = curXPathElem.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()); |
| } |
| } |
| list.add(new XPathType(xPath, filter, namespaceMap)); |
| } else { |
| list.add(new XPathType(xPath, filter)); |
| } |
| |
| curXPathElem = DOMUtils.getNextSiblingElement(curXPathElem); |
| } |
| this.params = new XPathFilter2ParameterSpec(list); |
| } |
| |
| public void marshalParams(XMLStructure parent, XMLCryptoContext context) |
| throws MarshalException { |
| |
| super.marshalParams(parent, context); |
| XPathFilter2ParameterSpec xp = |
| (XPathFilter2ParameterSpec) getParameterSpec(); |
| String prefix = DOMUtils.getNSPrefix(context, Transform.XPATH2); |
| String qname = (prefix == null || prefix.length() == 0) |
| ? "xmlns" : "xmlns:" + prefix; |
| List list = xp.getXPathList(); |
| for (int i = 0, size = list.size(); i < size; i++) { |
| XPathType xpathType = (XPathType) list.get(i); |
| Element elem = DOMUtils.createElement |
| (ownerDoc, "XPath", Transform.XPATH2, prefix); |
| elem.appendChild |
| (ownerDoc.createTextNode(xpathType.getExpression())); |
| DOMUtils.setAttribute |
| (elem, "Filter", xpathType.getFilter().toString()); |
| elem.setAttributeNS("http://www.w3.org/2000/xmlns/", qname, |
| Transform.XPATH2); |
| |
| // add namespace attributes, if necessary |
| Iterator it = xpathType.getNamespaceMap().entrySet().iterator(); |
| while (it.hasNext()) { |
| Map.Entry entry = (Map.Entry) it.next(); |
| elem.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:" |
| + (String) entry.getKey(), (String) entry.getValue()); |
| } |
| |
| transformElem.appendChild(elem); |
| } |
| } |
| } |