/*
* JBoss, Home of Professional Open Source.
* Copyright 2013, 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.wildfly.extension.undertow.security.jacc;
import java.security.PrivilegedAction;
import javax.security.jacc.PolicyContext;
import io.undertow.predicate.Predicates;
import io.undertow.server.HandlerWrapper;
import io.undertow.server.HttpHandler;
import io.undertow.server.HttpServerExchange;
import io.undertow.server.handlers.PredicateHandler;
import io.undertow.servlet.predicate.DispatcherTypePredicate;
import org.wildfly.security.manager.WildFlySecurityManager;
/**
* <p>
* A {@link HttpHandler} that sets the web application JACC contextId in the {@link PolicyContext}. Any previously registered
* contextId is suspended for the duration of the request and is restored when this handler is done.
* </p>
*
* @author <a href="mailto:sguilhen@redhat.com">Stefan Guilhen</a>
*/
public class JACCContextIdHandler implements HttpHandler {
private final PrivilegedAction<String> setContextIdAction;
private final HttpHandler next;
public JACCContextIdHandler(String contextId, HttpHandler next) {
this.setContextIdAction = new SetContextIDAction(contextId);
this.next = next;
}
@Override
public void handleRequest(final HttpServerExchange exchange) throws Exception {
// set JACC contextID and forward the request to the next handler.
String previousContextID = null;
try {
previousContextID = setContextID(setContextIdAction);
next.handleRequest(exchange);
}
finally {
// restore the previous JACC contextID.
setContextID(new SetContextIDAction(previousContextID));
}
}
/**
* <p>
* A {@link PrivilegedAction} that sets the contextId in the {@link PolicyContext}.
* </p>
*/
private static class SetContextIDAction implements PrivilegedAction<String> {
private final String contextID;
SetContextIDAction(String contextID) {
this.contextID = contextID;
}
@Override
public String run() {
String currentContextID = PolicyContext.getContextID();
PolicyContext.setContextID(this.contextID);
return currentContextID;
}
}
private String setContextID(PrivilegedAction<String> action) {
if(WildFlySecurityManager.isChecking()) {
return WildFlySecurityManager.doUnchecked(action);
}else {
return action.run();
}
}
public static HandlerWrapper wrapper(final String contextId) {
return new HandlerWrapper() {
@Override
public HttpHandler wrap(final HttpHandler handler) {
//we only run this on REQUEST or ASYNC invocations
return new PredicateHandler(Predicates.or(DispatcherTypePredicate.REQUEST, DispatcherTypePredicate.ASYNC), new JACCContextIdHandler(contextId, handler), handler);
}
};
}
}