org.ow2.bonita.facade.EJB3SecurityContext Maven / Gradle / Ivy

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package org.ow2.bonita.facade;

import java.lang.reflect.Method;
import java.security.Principal;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.ow2.bonita.util.BonitaRuntimeException;
import org.ow2.bonita.util.Misc;

public class EJB3SecurityContext implements BonitaSecurityContext {

  private static final Logger LOG = Logger.getLogger(EJB3SecurityContext.class.getName());
  
  public String getUser() {
    if (LOG.isLoggable(Level.FINEST)) {
      LOG.finest("Looking for user in " + EJB3SecurityContext.class);
    }
    try {
      final Object ejbContext = Misc.lookup("java:comp/EJBContext", null);
      if (LOG.isLoggable(Level.FINEST)) {
        LOG.finest("Looking for user in " + EJB3SecurityContext.class + ", ejbContext=" + ejbContext);
      }
      final Class< ? > ejbContextClass = Class.forName("javax.ejb.EJBContext");
      final Method getCallerPrincipalMethod = ejbContextClass.getMethod("getCallerPrincipal");
      final Principal principal = (Principal) getCallerPrincipalMethod.invoke(ejbContext);
      String user = principal.getName();
      if (LOG.isLoggable(Level.FINEST)) {
        LOG.finest("User found in " + EJB3SecurityContext.class + ": " + user);
      }
      return user;
    } catch (Exception e) {
      if (LOG.isLoggable(Level.FINEST)) {
        LOG.finest("Exception caught while looking for user in " + EJB3SecurityContext.class + ": " + e.getMessage());
      }
      throw new BonitaRuntimeException(e);
    }
  }

}