/*
* JBoss, Home of Professional Open Source
* Copyright 2007, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.security.xacml.core;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import javax.xml.bind.JAXB;
import javax.xml.bind.JAXBElement;
import javax.xml.parsers.DocumentBuilderFactory;
import org.jboss.security.xacml.core.model.context.ObjectFactory;
import org.jboss.security.xacml.core.model.context.RequestType;
import org.jboss.security.xacml.interfaces.ContextMapOp;
import org.jboss.security.xacml.interfaces.RequestContext;
import org.jboss.security.xacml.interfaces.XACMLConstants;
import org.jboss.security.xacml.sunxacml.ctx.RequestCtx;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* Implementation of the RequestContext interface
* @author Anil.Saldhana@redhat.com
* @since Jul 6, 2007
* @version $Revision$
*/
public class JBossRequestContext implements RequestContext
{
private Map<String,Object> map = new HashMap<String,Object>();
/**
* @see ContextMapOp#get(String)
*/
@SuppressWarnings("unchecked")
public <T> T get(String key)
{
return (T) map.get(key);
}
/**
* @see ContextMapOp#set(String, Object)
*/
public <T> void set(String key, T obj)
{
map.put(key, obj);
}
/**
* @see RequestContext#setRequest(RequestType)
*/
public void setRequest(RequestType requestType) throws IOException
{
JAXBElement<RequestType> requestJAXB = new ObjectFactory().createRequest(requestType);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
JAXB.marshal(requestJAXB, baos);
ByteArrayInputStream bis = new ByteArrayInputStream(baos.toByteArray());
readRequest(bis);
}
/**
* @see RequestContext#readRequest(InputStream)
*/
public void readRequest(InputStream is) throws IOException
{
try
{
RequestCtx request = RequestCtx.getInstance(getRequest(is));
set(XACMLConstants.REQUEST_CTX, request);
}
catch (Exception e)
{
throw new RuntimeException(e);
}
}
/**
* @see RequestContext#readRequest(Node)
*/
public void readRequest(Node node) throws IOException
{
try
{
RequestCtx request = RequestCtx.getInstance(node);
set(XACMLConstants.REQUEST_CTX, request);
}
catch (Exception e)
{
throw new RuntimeException(e);
}
}
/**
* @see RequestContext#marshall(OutputStream)
*/
public void marshall(OutputStream os) throws IOException
{
RequestCtx storedRequest = get(XACMLConstants.REQUEST_CTX);
if(storedRequest != null)
storedRequest.encode(os);
}
private Node getRequest(InputStream is) throws Exception
{
String contextSchema = "urn:oasis:names:tc:xacml:2.0:context:schema:os";
DocumentBuilderFactory factory =
DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
factory.setIgnoringComments(true);
Document doc = factory.newDocumentBuilder().parse(is);
NodeList nodes = doc.getElementsByTagNameNS(contextSchema, "Request");
return nodes.item(0);
}
}