Implements hook_file_download_access().
function comment_file_download_access($field, EntityInterface $entity, File $file) {
if ($entity
->entityType() == 'comment') {
if (user_access('access comments') && $entity->status == COMMENT_PUBLISHED || user_access('administer comments')) {
$node = node_load($entity->nid);
return node_access('view', $node);
}
return FALSE;
}
}