/**
* Loads the temporary object identified by the argument from the DB, verifies
* ownership (using the midgard:owner privilege) and returns the instance.
*
* The object timestamp is updated implicitly by the temporary object class.
*
* Objects which have exceeded their lifetime will no longer be returned for
* security reasons.
*
* @param int $id The temporary object ID to load.
* @return midcom_core_temporary_object The associated object or null in case that it
* is unavailable.
*/
function request_object($id)
{
if (!$id) {
debug_add("Invalid argument, may not evaluate to false", MIDCOM_LOG_INFO);
debug_print_r('Got this argument:', $id);
return null;
}
$tmp = new midcom_core_temporary_object((int) $id);
if (!$tmp->can_do('midgard:owner')) {
debug_add("The current user does not have owner privileges on the temporary object {$id}, denying access.", MIDCOM_LOG_INFO);
debug_print_r('Got this object:', $tmp);
return null;
}
// Check if the object has timeouted already.
$timeout = time() - $GLOBALS['midcom_config']['midcom_temporary_resource_timeout'];
if ($tmp->timestamp < $timeout) {
debug_add("The temporary object {$id} has exceeded its maximum lifetime, rejecting access and dropping it", MIDCOM_LOG_INFO);
debug_print_r("Object was:", $tmp);
$tmp->delete();
return null;
}
// Update the object timestamp
$tmp->update();
return $tmp;
}
