/**
* 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: DOMKeyInfo.java 1333869 2012-05-04 10:42:44Z coheigea $
*/
package org.apache.jcp.xml.dsig.internal.dom;
import javax.xml.crypto.*;
import javax.xml.crypto.dsig.*;
import javax.xml.crypto.dsig.keyinfo.KeyInfo;
import javax.xml.crypto.dom.*;
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.Node;
import org.w3c.dom.NodeList;
/**
* DOM-based implementation of KeyInfo.
*
* @author Sean Mullan
*/
public final class DOMKeyInfo extends DOMStructure implements KeyInfo {
private final String id;
private final List<XMLStructure> keyInfoTypes;
/**
* Creates a <code>DOMKeyInfo</code>.
*
* @param content a list of one or more {@link XMLStructure}s representing
* key information types. The list is defensively copied to protect
* against subsequent modification.
* @param id an ID attribute
* @throws NullPointerException if <code>content</code> is <code>null</code>
* @throws IllegalArgumentException if <code>content</code> is empty
* @throws ClassCastException if <code>content</code> contains any entries
* that are not of type {@link XMLStructure}
*/
public DOMKeyInfo(List<? extends XMLStructure> content, String id) {
if (content == null) {
throw new NullPointerException("content cannot be null");
}
this.keyInfoTypes =
Collections.unmodifiableList(new ArrayList<XMLStructure>(content));
if (this.keyInfoTypes.isEmpty()) {
throw new IllegalArgumentException("content cannot be empty");
}
for (int i = 0, size = this.keyInfoTypes.size(); i < size; i++) {
if (!(this.keyInfoTypes.get(i) instanceof XMLStructure)) {
throw new ClassCastException
("content["+i+"] is not a valid KeyInfo type");
}
}
this.id = id;
}
/**
* Creates a <code>DOMKeyInfo</code> from XML.
*
* @param kiElem KeyInfo element
*/
public DOMKeyInfo(Element kiElem, XMLCryptoContext context,
Provider provider)
throws MarshalException
{
// get Id attribute, if specified
Attr attr = kiElem.getAttributeNodeNS(null, "Id");
if (attr != null) {
id = attr.getValue();
kiElem.setIdAttributeNode(attr, true);
} else {
id = null;
}
// get all children nodes
NodeList nl = kiElem.getChildNodes();
int length = nl.getLength();
if (length < 1) {
throw new MarshalException
("KeyInfo must contain at least one type");
}
List<XMLStructure> content = new ArrayList<XMLStructure>(length);
for (int i = 0; i < length; i++) {
Node child = nl.item(i);
// ignore all non-Element nodes
if (child.getNodeType() != Node.ELEMENT_NODE) {
continue;
}
Element childElem = (Element)child;
String localName = childElem.getLocalName();
if (localName.equals("X509Data")) {
content.add(new DOMX509Data(childElem));
} else if (localName.equals("KeyName")) {
content.add(new DOMKeyName(childElem));
} else if (localName.equals("KeyValue")) {
content.add(DOMKeyValue.unmarshal(childElem));
} else if (localName.equals("RetrievalMethod")) {
content.add(new DOMRetrievalMethod(childElem,
context, provider));
} else if (localName.equals("PGPData")) {
content.add(new DOMPGPData(childElem));
} else { //may be MgmtData, SPKIData or element from other namespace
content.add(new javax.xml.crypto.dom.DOMStructure((childElem)));
}
}
keyInfoTypes = Collections.unmodifiableList(content);
}
public String getId() {
return id;
}
public List getContent() {
return keyInfoTypes;
}
public void marshal(XMLStructure parent, XMLCryptoContext context)
throws MarshalException
{
if (parent == null || !(parent instanceof javax.xml.crypto.dom.DOMStructure)) {
throw new ClassCastException("parent must be of type DOMStructure");
}
Node pNode = ((javax.xml.crypto.dom.DOMStructure)parent).getNode();
String dsPrefix = DOMUtils.getSignaturePrefix(context);
Element kiElem = DOMUtils.createElement
(DOMUtils.getOwnerDocument(pNode), "KeyInfo",
XMLSignature.XMLNS, dsPrefix);
if (dsPrefix == null || dsPrefix.length() == 0) {
kiElem.setAttributeNS("http://www.w3.org/2000/xmlns/",
"xmlns", XMLSignature.XMLNS);
} else {
kiElem.setAttributeNS("http://www.w3.org/2000/xmlns/",
"xmlns:" + dsPrefix, XMLSignature.XMLNS);
}
marshal(pNode, kiElem, null, dsPrefix, (DOMCryptoContext)context);
}
public void marshal(Node parent, String dsPrefix,
DOMCryptoContext context)
throws MarshalException
{
marshal(parent, null, dsPrefix, context);
}
public void marshal(Node parent, Node nextSibling, String dsPrefix,
DOMCryptoContext context)
throws MarshalException
{
Document ownerDoc = DOMUtils.getOwnerDocument(parent);
Element kiElem = DOMUtils.createElement(ownerDoc, "KeyInfo",
XMLSignature.XMLNS, dsPrefix);
marshal(parent, kiElem, nextSibling, dsPrefix, context);
}
private void marshal(Node parent, Element kiElem, Node nextSibling,
String dsPrefix, DOMCryptoContext context)
throws MarshalException
{
// create and append KeyInfoType elements
for (XMLStructure kiType : keyInfoTypes) {
if (kiType instanceof DOMStructure) {
((DOMStructure)kiType).marshal(kiElem, dsPrefix, context);
} else {
DOMUtils.appendChild(kiElem,
((javax.xml.crypto.dom.DOMStructure)kiType).getNode());
}
}
// append id attribute
DOMUtils.setAttributeID(kiElem, "Id", id);
parent.insertBefore(kiElem, nextSibling);
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof KeyInfo)) {
return false;
}
KeyInfo oki = (KeyInfo)o;
boolean idsEqual = (id == null ? oki.getId() == null
: id.equals(oki.getId()));
return (keyInfoTypes.equals(oki.getContent()) && idsEqual);
}
@Override
public int hashCode() {
int result = 17;
if (id != null) {
result = 31 * result + id.hashCode();
}
if (keyInfoTypes != null) {
result = 31 * result + keyInfoTypes.hashCode();
}
return result;
}
}