Merge branch 's1848' into ac2

package ca.nrc.cadc.cred.server.actions;

import ca.nrc.cadc.auth.AuthenticationUtil;

import ca.nrc.cadc.auth.DelegationToken;

import ca.nrc.cadc.auth.HttpPrincipal;

import ca.nrc.cadc.auth.PrincipalExtractor;

import ca.nrc.cadc.auth.*;

import java.util.Map;

import javax.security.auth.x500.X500Principal;

import javax.servlet.http.HttpServletRequest;

import ca.nrc.cadc.auth.X509CertificateChain;

import ca.nrc.cadc.cred.server.CertificateDAO;

import ca.nrc.cadc.net.ResourceNotFoundException;

import ca.nrc.cadc.profiler.Profiler;

            {

                return null;

            }

            /**

             * Create and return a SSOCookieCredential from the request

             *

             * @return

             */

            @Override

            public SSOCookieCredential getSSOCookieCredential()

            {

                return null;

            }

        });

        log.debug("augmented: " + s);

        profiler.checkpoint("getUser");

        Set<X500Principal> xp = s.getPrincipals(X500Principal.class);

        if (xp != null && !xp.isEmpty())

        if (xp.isEmpty())

        {

            X500Principal p = xp.iterator().next();

            return p;

        }

            throw new ResourceNotFoundException("user not found: " + userid);

        }

        else

        {

            return xp.iterator().next();

        }

    }

    /**

     * Action indicating that a resource could not be found.