/*
* JBoss, a division of Red Hat
* Copyright 2013, Red Hat Middleware, LLC, 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.gatein.security.oauth.webapi;
import java.io.IOException;
import java.util.Map;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.gatein.common.logging.Logger;
import org.gatein.common.logging.LoggerFactory;
import org.gatein.sso.agent.filter.api.SSOInterceptor;
import org.gatein.sso.integration.SSODelegateFilter;
/**
* Filter will delegate the work to configured OAuth interceptors
*
* @author <a href="mailto:mposolda@redhat.com">Marek Posolda</a>
*/
public class OAuthDelegateFilter extends SSODelegateFilter {
private volatile Map<SSOInterceptor, String> oauthInterceptors;
private static final Logger log = LoggerFactory.getLogger(OAuthDelegateFilter.class);
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
Map<SSOInterceptor, String> oauthInterceptors = getInterceptors();
// skip this filter if no oauthInterceptors are declared
if (!oauthInterceptors.isEmpty()) {
OAuthFilterChain oauthChain = new OAuthFilterChain(chain, getInterceptors(), this);
oauthChain.doFilter(request, response);
} else {
chain.doFilter(request, response);
}
}
private Map<SSOInterceptor, String> getInterceptors() {
if (oauthInterceptors == null) {
synchronized (this) {
if (oauthInterceptors == null) {
OAuthFilterIntegrator oauthFilterIntegrator = (OAuthFilterIntegrator)getContainer().getComponentInstanceOfType(OAuthFilterIntegrator.class);
oauthInterceptors = oauthFilterIntegrator.getOAuthInterceptors();
if (!oauthInterceptors.isEmpty()) {
log.info("Initialized OAuth integrator with interceptors: " + oauthInterceptors);
}
}
}
}
return oauthInterceptors;
}
private static class OAuthFilterChain extends SSODelegateFilter.SSOFilterChain {
private OAuthFilterChain(FilterChain containerChain, Map<SSOInterceptor, String> interceptors, OAuthDelegateFilter oauthDelegateFilter) {
super(containerChain, interceptors, oauthDelegateFilter);
}
}
}