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/* * Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved. */ /* * $Id: DOMXMLObject.java 1854026 2019-02-21 09:30:01Z coheigea $ */ package org.jcp.xml.dsig.internal.dom; import javax.xml.crypto.*; import javax.xml.crypto.dom.DOMCryptoContext; import javax.xml.crypto.dsig.*; import java.security.Provider; import java.util.*; import org.w3c.dom.Attr; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.NamedNodeMap; import org.w3c.dom.Node;
DOM-based implementation of XMLObject.
/** * DOM-based implementation of XMLObject. * */
public final class DOMXMLObject extends DOMStructure implements XMLObject { private final String id; private final String mimeType; private final String encoding; private final List<XMLStructure> content; private Element objectElem;
Creates an XMLObject from the specified parameters.
Params:
  • content – a list of XMLStructures. The list is defensively copied to protect against subsequent modification. May be null or empty.
  • id – the Id (may be null)
  • mimeType – the mime type (may be null)
  • encoding – the encoding (may be null)
Throws:
/** * Creates an {@code XMLObject} from the specified parameters. * * @param content a list of {@link XMLStructure}s. The list * is defensively copied to protect against subsequent modification. * May be {@code null} or empty. * @param id the Id (may be {@code null}) * @param mimeType the mime type (may be {@code null}) * @param encoding the encoding (may be {@code null}) * @throws ClassCastException if {@code content} contains any * entries that are not of type {@link XMLStructure} */
public DOMXMLObject(List<? extends XMLStructure> content, String id, String mimeType, String encoding) { if (content == null || content.isEmpty()) { this.content = Collections.emptyList(); } else { this.content = Collections.unmodifiableList( new ArrayList<>(content)); for (int i = 0, size = this.content.size(); i < size; i++) { if (!(this.content.get(i) instanceof XMLStructure)) { throw new ClassCastException ("content["+i+"] is not a valid type"); } } } this.id = id; this.mimeType = mimeType; this.encoding = encoding; }
Creates an XMLObject from an element.
Params:
  • objElem – an Object element
Throws:
/** * Creates an {@code XMLObject} from an element. * * @param objElem an Object element * @throws MarshalException if there is an error when unmarshalling */
public DOMXMLObject(Element objElem, XMLCryptoContext context, Provider provider) throws MarshalException { // unmarshal attributes this.encoding = DOMUtils.getAttributeValue(objElem, "Encoding"); Attr attr = objElem.getAttributeNodeNS(null, "Id"); if (attr != null) { this.id = attr.getValue(); objElem.setIdAttributeNode(attr, true); } else { this.id = null; } this.mimeType = DOMUtils.getAttributeValue(objElem, "MimeType"); List<XMLStructure> newContent = new ArrayList<>(); Node firstChild = objElem.getFirstChild(); while (firstChild != null) { if (firstChild.getNodeType() == Node.ELEMENT_NODE) { Element childElem = (Element)firstChild; String tag = childElem.getLocalName(); String namespace = childElem.getNamespaceURI(); if ("Manifest".equals(tag) && XMLSignature.XMLNS.equals(namespace)) { newContent.add(new DOMManifest(childElem, context, provider)); } else if ("SignatureProperties".equals(tag) && XMLSignature.XMLNS.equals(namespace)) { newContent.add(new DOMSignatureProperties(childElem)); } else if ("X509Data".equals(tag) && XMLSignature.XMLNS.equals(namespace)) { newContent.add(new DOMX509Data(childElem)); } else { //@@@FIXME: check for other dsig structures newContent.add(new javax.xml.crypto.dom.DOMStructure(firstChild)); } } else { newContent.add(new javax.xml.crypto.dom.DOMStructure(firstChild)); } firstChild = firstChild.getNextSibling(); } // Here we capture namespace declarations, so that when they're marshalled back // out, we can make copies of them. Note that attributes are NOT captured. NamedNodeMap nnm = objElem.getAttributes(); for (int idx = 0 ; idx < nnm.getLength() ; idx++) { Node nsDecl = nnm.item(idx); if (DOMUtils.isNamespace(nsDecl)) { newContent.add(new javax.xml.crypto.dom.DOMStructure(nsDecl)); } } if (newContent.isEmpty()) { this.content = Collections.emptyList(); } else { this.content = Collections.unmodifiableList(newContent); } this.objectElem = objElem; } public List<XMLStructure> getContent() { return content; } public String getId() { return id; } public String getMimeType() { return mimeType; } public String getEncoding() { return encoding; } @Override public void marshal(Node parent, String dsPrefix, DOMCryptoContext context) throws MarshalException { Document ownerDoc = DOMUtils.getOwnerDocument(parent); Element objElem = objectElem != null ? objectElem : null; if (objElem == null) { objElem = DOMUtils.createElement(ownerDoc, "Object", XMLSignature.XMLNS, dsPrefix); // set attributes DOMUtils.setAttributeID(objElem, "Id", id); DOMUtils.setAttribute(objElem, "MimeType", mimeType); DOMUtils.setAttribute(objElem, "Encoding", encoding); // create and append any elements and mixed content, if necessary for (XMLStructure object : content) { if (object instanceof DOMStructure) { ((DOMStructure)object).marshal(objElem, dsPrefix, context); } else { javax.xml.crypto.dom.DOMStructure domObject = (javax.xml.crypto.dom.DOMStructure)object; DOMUtils.appendChild(objElem, domObject.getNode()); } } } parent.appendChild(objElem); } @SuppressWarnings("unchecked") @Override public boolean equals(Object o) { if (this == o) { return true; } if (!(o instanceof XMLObject)) { return false; } XMLObject oxo = (XMLObject)o; boolean idsEqual = id == null ? oxo.getId() == null : id.equals(oxo.getId()); boolean encodingsEqual = encoding == null ? oxo.getEncoding() == null : encoding.equals(oxo.getEncoding()); boolean mimeTypesEqual = mimeType == null ? oxo.getMimeType() == null : mimeType.equals(oxo.getMimeType()); return idsEqual && encodingsEqual && mimeTypesEqual && equalsContent(oxo.getContent()); } @Override public int hashCode() { int result = 17; if (id != null) { result = 31 * result + id.hashCode(); } if (encoding != null) { result = 31 * result + encoding.hashCode(); } if (mimeType != null) { result = 31 * result + mimeType.hashCode(); } result = 31 * result + content.hashCode(); return result; } private boolean equalsContent(List<XMLStructure> otherContent) { if (content.size() != otherContent.size()) { return false; } for (int i = 0, osize = otherContent.size(); i < osize; i++) { XMLStructure oxs = otherContent.get(i); XMLStructure xs = content.get(i); if (oxs instanceof javax.xml.crypto.dom.DOMStructure) { if (!(xs instanceof javax.xml.crypto.dom.DOMStructure)) { return false; } Node onode = ((javax.xml.crypto.dom.DOMStructure)oxs).getNode(); Node node = ((javax.xml.crypto.dom.DOMStructure)xs).getNode(); if (!DOMUtils.nodesEqual(node, onode)) { return false; } } else { if (!(xs.equals(oxs))) { return false; } } } return true; } }