/**
* Run an update check and output the result. Useful for making sure that
* the update checking process works as expected.
*/
public function ajaxCheckNow()
{
if ($_POST['slug'] !== $this->updateChecker->slug) {
return;
}
$this->preAjaxReqest();
$update = $this->updateChecker->checkForUpdates();
if ($update !== null) {
echo "An update is available:";
echo '<pre>', htmlentities(print_r($update, true)), '</pre>';
} else {
echo 'No updates found.';
}
exit;
}
/**
* Check for updates if the configured check interval has already elapsed.
* Will use a shorter check interval on certain admin pages like "Dashboard -> Updates" or when doing cron.
*
* You can override the default behaviour by using the "puc_check_now-$slug" filter.
* The filter callback will be passed three parameters:
* - Current decision. TRUE = check updates now, FALSE = don't check now.
* - Last check time as a Unix timestamp.
* - Configured check period in hours.
* Return TRUE to check for updates immediately, or FALSE to cancel.
*
* This method is declared public because it's a hook callback. Calling it directly is not recommended.
*/
public function maybeCheckForUpdates()
{
if (empty($this->checkPeriod)) {
return;
}
$state = $this->updateChecker->getUpdateState();
$shouldCheck = empty($state) || !isset($state->lastCheck) || time() - $state->lastCheck >= $this->getEffectiveCheckPeriod();
//Let plugin authors substitute their own algorithm.
$shouldCheck = apply_filters('puc_check_now-' . $this->updateChecker->slug, $shouldCheck, !empty($state) && isset($state->lastCheck) ? $state->lastCheck : 0, $this->checkPeriod);
if ($shouldCheck) {
$this->updateChecker->checkForUpdates();
}
}