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Race condition in cron for Scheduled-Capture (very very big sites and…

… order review enabled only).

In one cron, 250-500 orders may be processed (based on 5 minutes).
If an admin sets cron time up smaller than 5 minutes and
250-500> new transactions are made after last cron executed, it can be blocked.
Authorize cron sets up an_lastcron every time when admin/cron.php executes.
This must be set up after blocking check code.

As result, if pending orders aren't accepted with in 30 days at payment management page, they expired and users cannot enrol.
When an admin enabled order review, he is guaranteed 'Payment managers accept/deny transactions manually'.
Scheduled-Capture is designed for forgotten orders only ;)

Backported from HEAD.
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1 parent d00f6bb commit 04250321539e8444c8e3e45a966b683e778d0f2f ethem committed Mar 11, 2008
Showing with 5 additions and 3 deletions.
  1. +5 −3 enrol/authorize/enrol.php
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8 enrol/authorize/enrol.php
@@ -436,7 +436,8 @@ function config_form($frm)
$captureday = intval($frm->an_capture_day);
$emailexpired = intval($frm->an_emailexpired);
if ($captureday > 0 || $emailexpired > 0) {
- if ((time() - intval($mconfig->an_lastcron) > 3600 * 24)) {
+ $lastcron = get_field_sql('SELECT max(lastcron) FROM ' . $CFG->prefix . 'modules');
+ if ((time() - intval($lastcron) > 3600 * 24)) {
notify(get_string('admincronsetup', 'enrol_authorize'));
}
}
@@ -511,7 +512,8 @@ function process_config($config)
$emailexpired = ($emailexpired > 5) ? 5 : (($emailexpired < 0) ? 0 : $emailexpired);
if (!empty($reviewval) && ($captureday > 0 || $emailexpired > 0)) {
- if (time() - intval($mconfig->an_lastcron) > 3600 * 24) {
+ $lastcron = get_field_sql('SELECT max(lastcron) FROM ' . $CFG->prefix . 'modules');
+ if (time() - intval($lastcron) > 3600 * 24) {
return false;
}
}
@@ -579,7 +581,6 @@ function cron()
$settlementtime = authorize_getsettletime($timenow);
$timediff30 = $settlementtime - (30 * $oneday);
$mconfig = get_config('enrol/authorize');
- set_config('an_lastcron', $timenow, 'enrol/authorize');
mtrace("Processing authorize cron...");
@@ -617,6 +618,7 @@ function cron()
mtrace("blocked");
return;
}
+ set_config('an_lastcron', $timenow, 'enrol/authorize');
mtrace(" $ordercount orders are being processed now", ": ");

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