Logs Customer Out When Wrong Coupon Code Entered

[Hade]

Hi,

 

This problem only occurs on my XP testing server with Apache 2.0.59 & PHP 5.

It does not occur on my live linux server, which I think is PHP4

 

When the customer enters an incorrect coupon code or referral email (points & rewards contrib) they are asked to login, even though they are already logged in.

 

So the problem seems to be that when order total modules should be stopping the checkout process and asking to re-enter the values, the user is just getting logged out.

 

Thanks for any help.

[Hade]

I've narrowed it down.

 

checkout_confirmation.php has the following code:

 

if (isset($HTTP_POST_VARS['customer_referred']) && tep_not_null($HTTP_POST_VARS['customer_referred'])) {
$valid_referral_query = tep_db_query("SELECT customers_id FROM " . TABLE_CUSTOMERS . " WHERE customers_email_address = '" . $HTTP_POST_VARS['customer_referred'] . "'");
$valid_referral = tep_db_fetch_array($valid_referral_query);
if (!tep_db_num_rows($valid_referral_query)) {
  tep_redirect(tep_href_link(FILENAME_CHECKOUT_PAYMENT, 'error_message=' . urlencode(REFERRAL_ERROR_NOT_FOUND), 'SSL'));
}
if ($HTTP_POST_VARS['customer_referred'] == $order->customer['email_address']) {
  tep_redirect(tep_href_link(FILENAME_CHECKOUT_PAYMENT, 'error_message=' . urlencode(REFERRAL_ERROR_SELF), 'SSL'));
} else {
  $customer_referral = $valid_referral['customers_id'];
  if (!tep_session_is_registered('customer_referral')) tep_session_register('customer_referral');
}

 

So I'm thinking there is a problem with the redirect.

Does anyone know what this problem could be? is there an issue with PHP5? Windows?