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  • Created by Unknown User (wiki_transfer), last modified on Apr 05, 2010

<?xml version="1.0" encoding="utf-8"?>
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Notes

  • JhuNavigation is a bad name
  • If I had to do this again I probably wouldn't pull the SSO value out of the database, instead I'd pull it from HTTP.
  • The 'jhu_authentication' metadata element is not used by the business layer; SSO authentication/authorization has already occurred. The element is there purely to allow stylers to add hints in the UI that the user has authenticated with SSO.
    *In retrospect I should have put this in its own aspect instead of modifying the EPerson aspect.

aspects/EPerson/sitemap.xmap

...
<map:transformers>
...
<!-- Adds metadata to the <userMeta> section of the DRI indicating whether or not
the user authenticated using single sign on (SiteMinder). -->
<map:transformer name="IsSsoLogin" src="edu.jhu.library.dspace.app.xmlui.eperson.JhuNavigation"/>
...
</map:transformers>
...
<map:pipelines>
<map:pipeline>
...
<map:transform type="Navigation"/>

<!--
If the user is using Johns Hopkins single sign on, then update
the <userMeta> element of the DRI document by adding a <metadata>
element:

<dri:metadata element="jhu_authentication" qualifier="singleSignOn">true</dri:metadata>

Themes can take advantage of this to provide additional styling.
-->
<map:transform type="IsSsoLogin"/>
...

aspects/EPerson/src/edu/jhu/library/dspace/app/xmlui/eperson/JhuNavigation.java

package edu.jhu.library.dspace.app.xmlui.eperson;

import edu.jhu.library.dspace.eperson.JhuEpersonDbField;
import org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer;
import org.dspace.app.xmlui.utils.UIException;
import org.dspace.app.xmlui.wing.WingException;
import org.dspace.app.xmlui.wing.element.UserMeta;
import org.dspace.authorize.AuthorizeException;
import org.dspace.eperson.EPerson;
import org.xml.sax.SAXException;

import java.io.IOException;
import java.sql.SQLException;

/**

  • Emits JHU-specific Single Sign On information into the DRI.
    */
    public class JhuNavigation extends AbstractDSpaceTransformer
    {

public void addUserMeta( UserMeta userMeta ) throws SAXException, WingException, UIException, SQLException, IOException, AuthorizeException
{
EPerson ePerson = context.getCurrentUser();
if ( ePerson != null )
{
if ( "true".equalsIgnoreCase( ePerson.getMetadata( JhuEpersonDbField.SSO_LOGIN ) ) )
{
userMeta
.addMetadata( JhuDri.DRI_AUTHN_ELEMENT, JhuDri.AUTHN_QUALIFIER_SSO )
.addContent( JhuDri.AUTHN_SSO_ENABLED );
}
}
}

}

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