/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2011, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file 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.as.web.security;

import javax.security.jacc.PolicyContextException;
import javax.security.jacc.PolicyContextHandler;

import org.jboss.security.SecurityConstants;

/**
 * A PolicyContextHandler for the active HttpServletRequest
 *
 * @author Scott.Stark@jboss.org
 * @author <a href="mailto:mmoyses@redhat.com">Marcus Moyses</a>
 */
public class HttpServletRequestPolicyContextHandler implements PolicyContextHandler {

    /** {@inheritDoc} */
    @Override
    public Object getContext(String key, Object data) throws PolicyContextException {
        if (!key.equalsIgnoreCase(SecurityConstants.WEB_REQUEST_KEY))
            return null;
        return SecurityContextAssociationValve.getActiveRequest();
    }

    /** {@inheritDoc} */
    @Override
    public String[] getKeys() throws PolicyContextException {
        String[] keys = { SecurityConstants.WEB_REQUEST_KEY };
        return keys;
    }

    /** {@inheritDoc} */
    @Override
    public boolean supports(String key) throws PolicyContextException {
        return key.equalsIgnoreCase(SecurityConstants.WEB_REQUEST_KEY);
    }

}