private function inferTrafficAttribution()
{
$ref = owa_coreAPI::getServerParam('HTTP_REFERER');
$medium = 'direct';
$source = '(none)';
$search_terms = '(none)';
$session_referer = '(none)';
if ($ref) {
$uri = owa_lib::parse_url($ref);
// check for external referer
$host = owa_coreAPI::getServerParam('HTTP_HOST');
if ($host != $uri['host']) {
$medium = 'referral';
$source = owa_lib::stripWwwFromDomain($uri['host']);
$engine = $this->isRefererSearchEngine($uri);
$session_referer = $ref;
if ($engine) {
$medium = 'organic-search';
$search_terms = $engine['t'];
}
}
}
owa_coreAPI::setState('s', 'referer', $session_referer);
owa_coreAPI::setState('s', 'medium', $medium);
owa_coreAPI::setState('s', 'source', $source);
owa_coreAPI::setState('s', 'search_terms', $search_terms);
}
