auth.php

#!/usr/bin/php-cgi
<?php
session_name("mit_cert_auth");
session_set_cookie_params(0, '/', '.mit.edu');
session_start();
$server = $_SESSION['server'];
if(empty($server)){
	die("Invalid Callback");
}
 if (@isset($_SERVER['SSL_CLIENT_S_DN_CN'])) {
	$time = time();
	$tohash = "SecretKey123".$_SERVER['SSL_CLIENT_I_DN_O'].$time;
	$hash = urlencode(sha1(md5($tohash)));
	header("Location: http://$server/?hash=".$hash."&time=".$time."&name=".urlencode($_SERVER['SSL_CLIENT_S_DN_CN'])."&email=".urlencode($_SERVER['SSL_CLIENT_S_DN_Email']));
	exit();
 } else {
 	header("Location: http://$server/?err=nocert");
	exit();
} ?>