/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, 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.jmx.connector.invoker;
import java.security.Principal;
import javax.naming.InitialContext;
import javax.security.auth.Subject;
import org.jboss.mx.interceptor.AbstractInterceptor;
import org.jboss.mx.interceptor.Interceptor;
import org.jboss.mx.server.Invocation;
import org.jboss.security.SecurityConstants;
import org.jboss.security.SecurityContext;
import org.jboss.security.SubjectSecurityManager;
/** A security interceptor that requires an authorized user for invoke(Invocation)
* operation calls when the SecurityDomain and SecurityMgr attributes are
* specified. Access to attributes and the MBeanInfo are not intercepted.
*
* @see Interceptor
*
* @author <a href="mailto:juha@jboss.org">Juha Lindfors</a>.
* @author Scott.Stark@jboss.org
* @version $Revision$
*
*/
public final class AuthenticationInterceptor extends AbstractInterceptor
{
private SubjectSecurityManager securityMgr;
private String securityDomain;
private boolean initialized = false;
public void setSecurityDomain(String securityDomain) throws Exception
{
this.securityDomain = securityDomain;
}
/**
*
* @param invocation
* @return
* @throws Throwable
*/
public Object invoke(Invocation invocation) throws Throwable
{
SecurityContext previousSC = null;
String type = invocation.getType();
Subject subject = null;
if (!initialized)
initialize();
if (type == Invocation.OP_INVOKE && securityMgr != null)
{
String opName = invocation.getName();
if (opName.equals("invoke"))
{
Object[] args = invocation.getArgs();
org.jboss.invocation.Invocation inv = (org.jboss.invocation.Invocation) args[0];
// Authenticate the caller based on the security association
Principal caller = inv.getPrincipal();
Object credential = inv.getCredential();
subject = new Subject();
boolean isValid = securityMgr.isValid(caller, credential, subject);
if (isValid == false)
{
String msg = "Failed to authenticate principal=" + caller + ", securityDomain="
+ securityMgr.getSecurityDomain();
throw new SecurityException(msg);
}
String securityDomain = SecurityConstants.DEFAULT_APPLICATION_POLICY;
if (securityMgr != null)
securityDomain = securityMgr.getSecurityDomain();
// store current security context
previousSC = SecurityActions.getSecurityContext();
SecurityContext sc = SecurityActions.createSecurityContext(securityDomain);
SecurityActions.setSecurityContext(sc);
// Push the caller security context
SecurityActions.pushSubjectContext(caller, credential, subject);
}
}
try
{
Interceptor i = invocation.nextInterceptor();
return i.invoke(invocation);
}
finally
{
// restore previous security context
if (subject != null)
SecurityActions.setSecurityContext(previousSC);
}
}
private void initialize()
{
try
{
InitialContext ctx = new InitialContext();
securityMgr = (SubjectSecurityManager) ctx.lookup(securityDomain);
}
catch (Exception e)
{
}
if (securityMgr == null)
log.warn("Unable to locate security domain " + securityDomain
+ ". The AuthenticationInterceptor will have no effect");
initialized = true;
}
}