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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 2005 Sun Microsystems, Inc. All rights reserved.
*/
/*
* $Id: DOMXMLObject.java 1602377 2014-06-13 11:20:43Z coheigea $
*/
package org.apache.jcp.xml.dsig.internal.dom;
import javax.xml.crypto.*;
import javax.xml.crypto.dsig.*;
import java.security.Provider;
import java.util.*;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
/**
* DOM-based implementation of XMLObject.
*
* @author Sean Mullan
*/
public final class DOMXMLObject extends BaseStructure implements XMLObject {
private final String id;
private final String mimeType;
private final String encoding;
private final List content;
/**
* Creates an 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 null or empty.
* @param id the Id (may be null)
* @param mimeType the mime type (may be null)
* @param encoding the encoding (may be null)
* @throws ClassCastException if content 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.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.
*
* @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 content = 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 (tag.equals("Manifest") && XMLSignature.XMLNS.equals(namespace)) {
content.add(new DOMManifest(childElem, context, provider));
} else if (tag.equals("SignatureProperties") && XMLSignature.XMLNS.equals(namespace)) {
content.add(new DOMSignatureProperties(childElem));
} else if (tag.equals("X509Data") && XMLSignature.XMLNS.equals(namespace)) {
content.add(new DOMX509Data(childElem));
} else {
//@@@FIXME: check for other dsig structures
content.add(new javax.xml.crypto.dom.DOMStructure(firstChild));
}
} else {
content.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)) {
content.add(new javax.xml.crypto.dom.DOMStructure(nsDecl));
}
}
if (content.isEmpty()) {
this.content = Collections.emptyList();
} else {
this.content = Collections.unmodifiableList(content);
}
}
@Override
public List getContent() {
return content;
}
@Override
public String getId() {
return id;
}
@Override
public String getMimeType() {
return mimeType;
}
@Override
public String getEncoding() {
return encoding;
}
public static void marshal(XmlWriter xwriter, XMLObject xmlObj, String dsPrefix, XMLCryptoContext context)
throws MarshalException {
xwriter.writeStartElement(dsPrefix, "Object", XMLSignature.XMLNS);
// set attributes
xwriter.writeIdAttribute("", "", "Id", xmlObj.getId());
xwriter.writeAttribute("", "", "MimeType", xmlObj.getMimeType());
xwriter.writeAttribute("", "", "Encoding", xmlObj.getEncoding());
// create and append any elements and mixed content, if necessary
@SuppressWarnings("unchecked")
List content = xmlObj.getContent();
for (XMLStructure object : content) {
xwriter.marshalStructure(object, dsPrefix, context);
}
xwriter.writeEndElement(); // "Object"
}
@SuppressWarnings("unchecked")
public static List getXmlObjectContent(XMLObject xo) {
return xo.getContent();
}
@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(getXmlObjectContent(oxo));
}
@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 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;
}
}