/*
* 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: DOMXMLObject.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.dom.DOMCryptoContext;
import javax.xml.crypto.dsig.*;
import java.security.Provider;
import java.util.*;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* DOM-based implementation of XMLObject.
*
* @author Sean Mullan
*/
public final class DOMXMLObject extends DOMStructure implements XMLObject {
private final String id;
private final String mimeType;
private final String encoding;
private final List content;
/**
* Creates an <code>XMLObject</code> 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</code> or empty.
* @param id the Id (may be <code>null</code>)
* @param mimeType the mime type (may be <code>null</code>)
* @param encoding the encoding (may be <code>null</code>)
* @return an <code>XMLObject</code>
* @throws ClassCastException if <code>content</code> contains any
* entries that are not of type {@link XMLStructure}
*/
public DOMXMLObject(List content, String id, String mimeType,
String encoding) {
if (content == null || content.isEmpty()) {
this.content = Collections.EMPTY_LIST;
} else {
List contentCopy = new ArrayList(content);
for (int i = 0, size = contentCopy.size(); i < size; i++) {
if (!(contentCopy.get(i) instanceof XMLStructure)) {
throw new ClassCastException
("content["+i+"] is not a valid type");
}
}
this.content = Collections.unmodifiableList(contentCopy);
}
this.id = id;
this.mimeType = mimeType;
this.encoding = encoding;
}
/**
* Creates an <code>XMLObject</code> 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");
this.id = DOMUtils.getAttributeValue(objElem, "Id");
this.mimeType = DOMUtils.getAttributeValue(objElem, "MimeType");
NodeList nodes = objElem.getChildNodes();
int length = nodes.getLength();
List content = new ArrayList(length);
for (int i = 0; i < length; i++) {
Node child = nodes.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE) {
Element childElem = (Element) child;
String tag = childElem.getLocalName();
if (tag.equals("Manifest")) {
content.add(new DOMManifest(childElem, context, provider));
continue;
} else if (tag.equals("SignatureProperties")) {
content.add(new DOMSignatureProperties(childElem));
continue;
} else if (tag.equals("X509Data")) {
content.add(new DOMX509Data(childElem));
continue;
}
//@@@FIXME: check for other dsig structures
}
content.add(new javax.xml.crypto.dom.DOMStructure(child));
}
if (content.isEmpty()) {
this.content = Collections.EMPTY_LIST;
} else {
this.content = Collections.unmodifiableList(content);
}
}
public List getContent() {
return content;
}
public String getId() {
return id;
}
public String getMimeType() {
return mimeType;
}
public String getEncoding() {
return encoding;
}
public void marshal(Node parent, String dsPrefix, DOMCryptoContext context)
throws MarshalException {
Document ownerDoc = DOMUtils.getOwnerDocument(parent);
Element 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 (int i = 0, size = content.size(); i < size; i++) {
XMLStructure object = (XMLStructure) content.get(i);
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);
}
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()));
}
private boolean equalsContent(List otherContent) {
if (content.size() != otherContent.size()) {
return false;
}
for (int i = 0, osize = otherContent.size(); i < osize; i++) {
XMLStructure oxs = (XMLStructure) otherContent.get(i);
XMLStructure xs = (XMLStructure) 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;
}
}