/*
* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
/**
* 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.
*/
package com.sun.org.apache.xml.internal.security.encryption;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.StringReader;
import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* Converts <code>String</code>s into <code>Node</code>s and visa versa.
*/
public class DocumentSerializer extends AbstractSerializer {
protected DocumentBuilderFactory dbf;
/**
* @param source
* @param ctx
* @return the Node resulting from the parse of the source
* @throws XMLEncryptionException
*/
public Node deserialize(byte[] source, Node ctx) throws XMLEncryptionException {
byte[] fragment = createContext(source, ctx);
return deserialize(ctx, new InputSource(new ByteArrayInputStream(fragment)));
}
/**
* @param source
* @param ctx
* @return the Node resulting from the parse of the source
* @throws XMLEncryptionException
*/
public Node deserialize(String source, Node ctx) throws XMLEncryptionException {
String fragment = createContext(source, ctx);
return deserialize(ctx, new InputSource(new StringReader(fragment)));
}
/**
* @param ctx
* @param inputSource
* @return the Node resulting from the parse of the source
* @throws XMLEncryptionException
*/
private Node deserialize(Node ctx, InputSource inputSource) throws XMLEncryptionException {
try {
if (dbf == null) {
dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
dbf.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, Boolean.TRUE);
dbf.setAttribute("http://xml.org/sax/features/namespaces", Boolean.TRUE);
dbf.setValidating(false);
}
DocumentBuilder db = dbf.newDocumentBuilder();
Document d = db.parse(inputSource);
Document contextDocument = null;
if (Node.DOCUMENT_NODE == ctx.getNodeType()) {
contextDocument = (Document)ctx;
} else {
contextDocument = ctx.getOwnerDocument();
}
Element fragElt =
(Element) contextDocument.importNode(d.getDocumentElement(), true);
DocumentFragment result = contextDocument.createDocumentFragment();
Node child = fragElt.getFirstChild();
while (child != null) {
fragElt.removeChild(child);
result.appendChild(child);
child = fragElt.getFirstChild();
}
return result;
} catch (SAXException se) {
throw new XMLEncryptionException("empty", se);
} catch (ParserConfigurationException pce) {
throw new XMLEncryptionException("empty", pce);
} catch (IOException ioe) {
throw new XMLEncryptionException("empty", ioe);
}
}
}