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/*
************************************************************************
******************* CANADIAN ASTRONOMY DATA CENTRE *******************
************** CENTRE CANADIEN DE DONNÉES ASTRONOMIQUES **************
*
* (c) 2015. (c) 2015.
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* Government of Canada Gouvernement du Canada
* National Research Council Conseil national de recherches
* Ottawa, Canada, K1A 0R6 Ottawa, Canada, K1A 0R6
* All rights reserved Tous droits réservés
*
* NRC disclaims any warranties, Le CNRC dénie toute garantie
* expressed, implied, or énoncée, implicite ou légale,
* statutory, of any kind with de quelque nature que ce
* respect to the software, soit, concernant le logiciel,
* including without limitation y compris sans restriction
* any warranty of merchantability toute garantie de valeur
* or fitness for a particular marchande ou de pertinence
* purpose. NRC shall not be pour un usage particulier.
* liable in any event for any Le CNRC ne pourra en aucun cas
* damages, whether direct or être tenu responsable de tout
* indirect, special or general, dommage, direct ou indirect,
* consequential or incidental, particulier ou général,
* arising from the use of the accessoire ou fortuit, résultant
* software. Neither the name de l'utilisation du logiciel. Ni
* of the National Research le nom du Conseil National de
* Council of Canada nor the Recherches du Canada ni les noms
* names of its contributors may de ses participants ne peuvent
* be used to endorse or promote être utilisés pour approuver ou
* products derived from this promouvoir les produits dérivés
* software without specific prior de ce logiciel sans autorisation
* written permission. préalable et particulière
* par écrit.
*
* This file is part of the Ce fichier fait partie du projet
* OpenCADC project. OpenCADC.
*
* OpenCADC is free software: OpenCADC est un logiciel libre ;
* you can redistribute it and/or vous pouvez le redistribuer ou le
* modify it under the terms of modifier suivant les termes de
* the GNU Affero General Public la “GNU Affero General Public
* License as published by the License” telle que publiée
* Free Software Foundation, par la Free Software Foundation
* either version 3 of the : soit la version 3 de cette
* License, or (at your option) licence, soit (à votre gré)
* any later version. toute version ultérieure.
*
* OpenCADC is distributed in the OpenCADC est distribué
* hope that it will be useful, dans l’espoir qu’il vous
* but WITHOUT ANY WARRANTY; sera utile, mais SANS AUCUNE
* without even the implied GARANTIE : sans même la garantie
* warranty of MERCHANTABILITY implicite de COMMERCIALISABILITÉ
* or FITNESS FOR A PARTICULAR ni d’ADÉQUATION À UN OBJECTIF
* PURPOSE. See the GNU Affero PARTICULIER. Consultez la Licence
* General Public License for Générale Publique GNU Affero
* more details. pour plus de détails.
*
* You should have received Vous devriez avoir reçu une
* a copy of the GNU Affero copie de la Licence Générale
* General Public License along Publique GNU Affero avec
* with OpenCADC. If not, see OpenCADC ; si ce n’est
* <http://www.gnu.org/licenses/>. pas le cas, consultez :
* <http://www.gnu.org/licenses/>.
*
*
************************************************************************
*/
package ca.nrc.cadc.ac.server.web;
import java.io.IOException;
import java.net.URI;
import java.net.URL;
import java.util.Set;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import ca.nrc.cadc.auth.AuthMethod;
import ca.nrc.cadc.reg.Standards;
import org.apache.log4j.Logger;
import ca.nrc.cadc.auth.AuthenticationUtil;
import ca.nrc.cadc.auth.HttpPrincipal;
import ca.nrc.cadc.log.ServletLogInfo;
import ca.nrc.cadc.reg.client.LocalAuthority;
import ca.nrc.cadc.reg.client.RegistryClient;
* Servlet to handle GET requests asking for the current User. This servlet
* will implement the /whoami functionality to return details about the
* currently authenticated user, or rather, the user whose Subject is currently
* found in this context.
public class WhoAmIServlet extends HttpServlet
private static final Logger log = Logger.getLogger(WhoAmIServlet.class);
static final String USER_GET_PATH = "/%s?idType=HTTP";
* Handle a /whoami GET operation.
*
* @param request The HTTP Request.
* @param response The HTTP Response.
* @throws ServletException Anything goes wrong at the Servlet level.
* @throws IOException Any reading/writing errors.
@Override
protected void doGet(final HttpServletRequest request,
final HttpServletResponse response)
throws ServletException, IOException
final long start = System.currentTimeMillis();
final ServletLogInfo logInfo = new ServletLogInfo(request);
log.info(logInfo.start());
final Subject currentSubject = getSubject(request);
final Set<HttpPrincipal> currentWebPrincipals =
currentSubject.getPrincipals(HttpPrincipal.class);
if (currentWebPrincipals.isEmpty())
response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
else
redirect(response, currentWebPrincipals.toArray(
new HttpPrincipal[1])[0], request.getScheme());
}
catch (IllegalArgumentException e)
{
log.debug(e.getMessage(), e);
logInfo.setMessage(e.getMessage());
response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
}
catch (Throwable t)
{
String message = "Internal Server Error: " + t.getMessage();
log.error(message, t);
logInfo.setSuccess(false);
logInfo.setMessage(message);
response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
}
finally
{
logInfo.setElapsedTime(System.currentTimeMillis() - start);
log.info(logInfo.end());
}
}
/**
* Forward on to the Service's user endpoint.
*
* @param response The HTTP response.
* @param webPrincipal The HttpPrincipal instance.
*/
void redirect(final HttpServletResponse response,
final HttpPrincipal webPrincipal,
final String scheme) throws IOException
final RegistryClient registryClient = getRegistryClient();
LocalAuthority localAuthority = new LocalAuthority();
URI umsServiceURI = localAuthority.getServiceURI("ums");
log.debug("ums service uri: " + umsServiceURI);
final URL serviceURL = registryClient.getServiceURL(umsServiceURI, Standards.UMS_USERS_01, AuthMethod.PASSWORD);
final URL redirectURL = new URL(serviceURL.toExternalForm() + USER_GET_PATH);
// Take the first one.
final String redirectUrl =
String.format(redirectURL.toString(), webPrincipal.getName());
final URI redirectURI = URI.create(redirectUrl);
log.debug("redirecting to " + redirectURI.toASCIIString());
response.sendRedirect(redirectURI.getPath() + "?" + redirectURI.getQuery());
/**
* Tests will need to override this method so as not to rely on the
* environment.
*
* @return Registry Client instance.
*/
RegistryClient getRegistryClient()
return new RegistryClient();
/**
* Get and augment the Subject. Tests can override this method.
*
* @param request Servlet request
* @return augmented Subject
*/
Subject getSubject(final HttpServletRequest request)
return AuthenticationUtil.getSubject(request);