GuestInterceptorWrapper.java

/**
 * Copyright (c) Codice Foundation
 * <p>
 * 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 3 of the
 * License, or any later version.
 * <p>
 * This program 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. A copy of the GNU Lesser General Public License
 * is distributed along with this program and can be found at
 * <http://www.gnu.org/licenses/lgpl.html>.
 */

package org.codice.ddf.security.interceptor;

import java.util.Collection;
import java.util.Iterator;
import java.util.Set;

import org.apache.cxf.binding.soap.SoapMessage;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.phase.Phase;
import org.apache.cxf.phase.PhaseInterceptor;
import org.apache.cxf.ws.security.wss4j.AbstractWSS4JInterceptor;
import org.apache.cxf.ws.security.wss4j.PolicyBasedWSS4JInInterceptor;
import org.apache.cxf.ws.security.wss4j.WSS4JInInterceptor;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.framework.ServiceReference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class GuestInterceptorWrapper extends AbstractWSS4JInterceptor {
    private static final Logger LOGGER = LoggerFactory.getLogger(GuestInterceptorWrapper.class);

    private PhaseInterceptor guestIntercep;

    public GuestInterceptorWrapper() {
        super();
        setPhase(Phase.PRE_PROTOCOL);
        //make sure this interceptor runs before the WSS4J one in the same Phase, otherwise it won't work
        Set<String> before = getBefore();
        before.add(WSS4JInInterceptor.class.getName());
        before.add(PolicyBasedWSS4JInInterceptor.class.getName());
    }

    protected BundleContext getContext() {
        Bundle cxfBundle = FrameworkUtil.getBundle(GuestInterceptorWrapper.class);
        if (cxfBundle != null) {
            return cxfBundle.getBundleContext();
        }
        return null;
    }

    @Override
    public void handleMessage(SoapMessage msg) throws Fault {
        BundleContext context = getContext();
        PhaseInterceptor guestIntercep = null;
        Collection<ServiceReference<PhaseInterceptor>> guestIntercepRefs = null;
        if (context != null) {
            try {
                guestIntercepRefs = context.getServiceReferences(PhaseInterceptor.class,
                        "(interceptor=guest)");
            } catch (InvalidSyntaxException e) {
                //ignore, it isn't invalid
            }

            if (guestIntercepRefs != null && guestIntercepRefs.size() > 0) {
                Iterator<ServiceReference<PhaseInterceptor>> iterator =
                        guestIntercepRefs.iterator();
                guestIntercep = context.getService(iterator.next());
            }
            if (guestIntercep != null) {
                guestIntercep.handleMessage(msg);
            } else {
                LOGGER.debug("Guest Interceptor is not installed, ignoring");
            }
        } else {
            LOGGER.debug("Unable to acquire bundle context for guest interceptor");
        }
    }

}