String fromPage = request.getParameter("fromPage");
String fromPage = request.getHeader("Referer");   String host = ConfigurationManager.getProperty("dspace.hostname");  String basicHost = ""; if (host.equals("localhost") || host.equals("127.0.0.1") || host.equals(InetAddress.getLocalHost().getHostAddress())) basicHost = host; else {   int lastDot = host.lastIndexOf("."); basicHost = host.substring(host.substring(0, lastDot).lastIndexOf(".")); }  if (fromPage == null || fromPage.indexOf(basicHost) == -1) { throw new AuthorizeException(); }
    protected void doDSGet(Context context, HttpServletRequest request,            HttpServletResponse response) throws ServletException, IOException,            SQLException, AuthorizeException    {        // Obtain information from request        // The page where the user came from        String fromPage = request.getParameter("fromPage");        // The email address they provided        String formEmail = request.getParameter("email");        // Browser        String userAgent = request.getHeader("User-Agent");        // Session id        String sessionID = request.getSession().getId();        // User email from context        EPerson currentUser = context.getCurrentUser();        String authEmail = null;        if (currentUser != null)        {            authEmail = currentUser.getEmail();        }        // Has the user just posted their feedback?        if (request.getParameter("submit") != null)        {            String feedback = request.getParameter("feedback");            // Check all data is there            if ((formEmail == null) || formEmail.equals("")                    || (feedback == null) || feedback.equals(""))            {                log.info(LogManager.getHeader(context, "show_feedback_form",                        "problem=true"));                request.setAttribute("feedback.problem", new Boolean(true));                JSPManager.showJSP(request, response, "/feedback/form.jsp");                return;            }            // All data is there, send the email            try            {                Email email = ConfigurationManager.getEmail("feedback");                email.addRecipient(ConfigurationManager                        .getProperty("feedback.recipient"));                email.addArgument(new Date()); // Date                email.addArgument(formEmail); // Email                email.addArgument(authEmail); // Logged in as                email.addArgument(fromPage); // Referring page                email.addArgument(userAgent); // User agent                email.addArgument(sessionID); // Session ID                email.addArgument(feedback); // The feedback itself                // Replying to feedback will reply to email on form                email.setReplyTo(formEmail);                email.send();                log.info(LogManager.getHeader(context, "sent_feedback", "from="                        + formEmail));                JSPManager.showJSP(request, response,                        "/feedback/acknowledge.jsp");            }            catch (MessagingException me)            {                log.warn(LogManager.getHeader(context,                        "error_mailing_feedback", ""), me);                JSPManager.showInternalError(request, response);            }        }        else        {            // Display feedback form            log.info(LogManager.getHeader(context, "show_feedback_form",                    "problem=false"));            request.setAttribute("authenticated.email", authEmail);            JSPManager.showJSP(request, response, "/feedback/form.jsp");        }    }