I have ecommerce with WorldPay integration, and the back end is working, BUT when WorldPay displays the callback page, with URL like:
https://select.worldpay.com/wcc/card?op-PMGetNextPage&PaymentID=mg1imsps........ etc.
I see:
I have narrowed the problem down somewhat. If I use
print_r($account);
in line 379 of user.module (Drupal 5.9), meaning directly after
if (!isset($perm[$account->uid])) {
and I call the worldpay_callback URL in my browser then I see:
stdClass Object ( [uid] => 0 [hostname] => XX.ZZ.AA.CC [roles] => Array ( [1] => anonymous user )
[session] => [cache] => 0 )
which makes sense. But if I leave that code in and view the callback page as it is sent to Worldpay, then that print_r has no output whatsoever. I confirmed this 100% by putting a simple echo before and after--those echos I see, but the print_r serves up no results.
Seems perhaps that Worldpay is calling the page differently and the global $user is not being set. Because $account is set to be whatever $user is.