gistfile1.php

<?php
class Demac_Casl_Model_Subscriber extends Mage_Core_Model_Abstract
{
    protected function _construct()
    {
        $this->_init('demac_casl/subscriber');
    }

    public function addCaslData()
    {
        $ip = Mage::helper('core/http')->getRemoteAddr();
        $currentTimestamp = Mage::getModel('core/date')->timestamp(time());
        $currentDate = date('Y-m-d', $currentTimestamp);
        $referrerUrl = Mage::app()->getRequest()->getServer('HTTP_REFERER');

        $this->setIpAddress($ip);
        $this->setDateSubscribed($currentDate);
        $this->setReferrerUrl($referrerUrl);
    }
}