/** * Listen to entity ownership changes and update icon ownership by moving * icons to their new owner's directory on filestore. * * This will only transfer icons that have a custom location on filestore * and are owned by the entity's owner (instead of the entity itself). * Even though core icon service does not store icons in the entity's owner * directory, there are plugins that do (e.g. file plugin) - this handler * helps such plugins avoid ownership mismatch. * * @param string $event "update:after" * @param string $type "object"|"group" * @param ElggObject $entity Entity * @return void * @access private */ function _elgg_filestore_move_icons($event, $type, $entity) { $original_attributes = $entity->getOriginalAttributes(); if (empty($original_attributes['owner_guid'])) { return; } $previous_owner_guid = $original_attributes['owner_guid']; $new_owner_guid = $entity->owner_guid; $sizes = elgg_get_icon_sizes($entity->getType(), $entity->getSubtype()); foreach ($sizes as $size => $opts) { $new_icon = $entity->getIcon($size); if ($new_icon->owner_guid == $entity->guid) { // we do not need to update icons that are owned by the entity itself continue; } if ($new_icon->owner_guid != $new_owner_guid) { // a plugin implements some custom logic continue; } $old_icon = new \ElggIcon(); $old_icon->owner_guid = $previous_owner_guid; $old_icon->setFilename($new_icon->getFilename()); if (!$old_icon->exists()) { // there is no icon to move continue; } if ($new_icon->exists()) { // there is already a new icon // just removing the old one $old_icon->delete(); elgg_log("Entity {$entity->guid} has been transferred to a new owner but an icon was left behind under {$old_icon->getFilenameOnFilestore()}. " . "Old icon has been deleted", 'NOTICE'); continue; } $old_icon->transfer($new_icon->owner_guid, $new_icon->getFilename()); elgg_log("Entity {$entity->guid} has been transferred to a new owner. " . "Icon was moved from {$old_icon->getFilenameOnFilestore()} to {$new_icon->getFilenameOnFilestore()}.", 'NOTICE'); } }