edu.cornell.mannlib.vitro.webapp.controller.edit.Logout.java Source code

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Here is the source code for edu.cornell.mannlib.vitro.webapp.controller.edit.Logout.java

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/* $This file is distributed under the terms of the license in /doc/license.txt$ */

package edu.cornell.mannlib.vitro.webapp.controller.edit;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import edu.cornell.mannlib.vitro.webapp.beans.DisplayMessage;
import edu.cornell.mannlib.vitro.webapp.controller.authenticate.Authenticator;
import edu.cornell.mannlib.vitro.webapp.controller.authenticate.LogoutRedirector;
import edu.cornell.mannlib.vitro.webapp.i18n.I18n;

/**
 * Provide a means for programmatic logout.
 */
public class Logout extends HttpServlet {
    private static final Log log = LogFactory.getLog(Logout.class.getName());

    /** This http header holds the referring page. */
    private static final String HEADING_REFERRER = "referer";

    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response) {
        try {
            String referrer = getReferringPage(request);
            String redirectUrl = LogoutRedirector.getRedirectUrl(request, response, referrer);

            Authenticator.getInstance(request).recordUserIsLoggedOut();
            DisplayMessage.setMessage(request, I18n.bundle(request).text("logged_out"));

            response.sendRedirect(redirectUrl);
        } catch (Exception ex) {
            log.error(ex, ex);
        }
    }

    private String getReferringPage(HttpServletRequest request) {
        String referrer = request.getHeader(HEADING_REFERRER);
        if (referrer == null) {
            referrer = "/.";
        }
        log.debug("Referring page is '" + referrer + "'");
        return referrer;
    }

    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response) {
        doPost(request, response);
    }
}