/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., 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.jboss.security.authorization.modules.ejb;
import java.util.Map;
import javax.security.auth.Subject;
import org.jboss.logging.Logger;
import org.jboss.security.authorization.AuthorizationContext;
import org.jboss.security.authorization.PolicyRegistration;
import org.jboss.security.authorization.Resource;
import org.jboss.security.authorization.ResourceKeys;
import org.jboss.security.authorization.modules.AuthorizationModuleDelegate;
import org.jboss.security.authorization.resources.EJBResource;
import org.jboss.security.identity.RoleGroup;
import org.jboss.security.xacml.interfaces.PolicyDecisionPoint;
import org.jboss.security.xacml.interfaces.RequestContext;
import org.jboss.security.xacml.interfaces.ResponseContext;
import org.jboss.security.xacml.interfaces.XACMLConstants;
//$Id: EJBXACMLPolicyModuleDelegate.java 79981 2008-10-23 15:55:18Z anil.saldhana@jboss.com $
/**
* Authorization Module Delegate that deals with the authorization decisions
* for the EJB Layer
* @author <a href="mailto:Anil.Saldhana@jboss.org">Anil Saldhana</a>
* @since Jul 6, 2006
* @version $Revision: 79981 $
*/
public class EJBXACMLPolicyModuleDelegate extends EJBPolicyModuleDelegate
{
private String policyContextID;
public EJBXACMLPolicyModuleDelegate()
{
log = Logger.getLogger(getClass());
trace = log.isTraceEnabled();
}
/**
* @see AuthorizationModuleDelegate#authorize(Resource)
*/
public int authorize(Resource resource, Subject callerSubject, RoleGroup role)
{
if(resource instanceof EJBResource == false)
throw new IllegalArgumentException("resource is not an EJBResource");
EJBResource ejbResource = (EJBResource) resource;
//Get the context map
Map<String,Object> map = resource.getMap();
if(map == null)
throw new IllegalStateException("Map from the Resource is null");
this.policyRegistration = (PolicyRegistration) map.get(ResourceKeys.POLICY_REGISTRATION);
if(this.policyRegistration == null)
throw new IllegalStateException("Policy Registration passed is null");
this.callerRunAs = ejbResource.getCallerRunAsIdentity();
this.ejbName = ejbResource.getEjbName();
this.ejbMethod = ejbResource.getEjbMethod();
this.ejbPrincipal = ejbResource.getPrincipal();
this.policyContextID = ejbResource.getPolicyContextID();
if(policyContextID == null)
throw new IllegalStateException("Context ID is null");
this.securityRoleReferences = ejbResource.getSecurityRoleReferences();
//isCallerInRole checks
this.roleName = (String)map.get(ResourceKeys.ROLENAME);
Boolean roleRefCheck = checkBooleanValue((Boolean)map.get(ResourceKeys.ROLEREF_PERM_CHECK));
if(roleRefCheck)
return checkRoleRef(role); //Base class handles this
return process(role);
}
//Private Methods
/**
* Process the ejb request
* @param request
* @param sc
* @return
*/
private int process(RoleGroup callerRoles)
{
int result = AuthorizationContext.DENY;
EJBXACMLUtil util = new EJBXACMLUtil();
try
{
RequestContext requestCtx = util.createXACMLRequest(this.ejbName,
this.ejbMethod.getName(),this.ejbPrincipal, callerRoles);
PolicyDecisionPoint pdp = util.getPDP(policyRegistration, this.policyContextID);
if(pdp == null)
throw new IllegalStateException("PDP is null");
ResponseContext response = pdp.evaluate(requestCtx);
result = response.getDecision() == XACMLConstants.DECISION_PERMIT ?
AuthorizationContext.PERMIT : AuthorizationContext.DENY;
}
catch(Exception e)
{
if(trace)
log.trace("Exception in processing:",e);
result = AuthorizationContext.DENY;
}
return result;
}
/**
* Ensure that the bool is a valid value
* @param bool
* @return bool or Boolean.FALSE (when bool is null)
*/
private Boolean checkBooleanValue(Boolean bool)
{
if(bool == null)
return Boolean.FALSE;
return bool;
}
}