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<?php
/*
http://snipplr.com/view/17481/modx-referer-authentication-snippet/
MODx referer authentication snippet
For low level authentication only.
*/

$referer = $_SERVER['HTTP_REFERER'];
$referer_parse = parse_url($referer);
 
if($referer_parse['host'] == "site.com" || $referer_parse['host'] == "www.site.com") {
     // download...
     $chunk = $modx->getChunk("displayChunk");
	 echo $chunk;
} else {
     //header("Location: http://www.mysite.com"); 
     //$modx->sendRedirect();
     echo $modx->getChunk("noAccess");
     //exit();
}
?>