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| <?php | |
| /** | |
| * | |
| * This file is part of the phpBB Forum Software package. | |
| * | |
| * @copyright (c) phpBB Limited <https://www.phpbb.com> | |
| * @license GNU General Public License, version 2 (GPL-2.0) | |
| * | |
| * For full copyright and license information, please see | |
| * the docs/CREDITS.txt file. | |
| * | |
| */ | |
| namespace phpbb\attachment; | |
| use phpbb\db\driver\driver_interface; | |
| /** | |
| * Attachment resync class | |
| */ | |
| class resync | |
| { | |
| /** @var driver_interface */ | |
| protected $db; | |
| /** @var string Attachment table SQL ID */ | |
| private $attach_sql_id; | |
| /** @var string Resync table SQL ID */ | |
| private $resync_sql_id; | |
| /** @var string Resync SQL table */ | |
| private $resync_table; | |
| /** @var string SQL where statement */ | |
| private $sql_where; | |
| /** | |
| * Constructor for attachment resync class | |
| * | |
| * @param driver_interface $db Database driver | |
| */ | |
| public function __construct(driver_interface $db) | |
| { | |
| $this->db = $db; | |
| } | |
| /** | |
| * Set type constraints for attachment resync | |
| * | |
| * @param string $type Type of resync; can be: message|post|topic | |
| */ | |
| protected function set_type_constraints($type) | |
| { | |
| switch ($type) | |
| { | |
| case 'message': | |
| $this->attach_sql_id = 'post_msg_id'; | |
| $this->sql_where = ' AND in_message = 1 | |
| AND is_orphan = 0'; | |
| $this->resync_table = PRIVMSGS_TABLE; | |
| $this->resync_sql_id = 'msg_id'; | |
| break; | |
| case 'post': | |
| $this->attach_sql_id = 'post_msg_id'; | |
| $this->sql_where = ' AND in_message = 0 | |
| AND is_orphan = 0'; | |
| $this->resync_table = POSTS_TABLE; | |
| $this->resync_sql_id = 'post_id'; | |
| break; | |
| case 'topic': | |
| $this->attach_sql_id = 'topic_id'; | |
| $this->sql_where = ' AND is_orphan = 0'; | |
| $this->resync_table = TOPICS_TABLE; | |
| $this->resync_sql_id = 'topic_id'; | |
| break; | |
| } | |
| } | |
| /** | |
| * Resync specified type | |
| * | |
| * @param string $type Type of resync | |
| * @param array $ids IDs to resync | |
| */ | |
| public function resync($type, $ids) | |
| { | |
| if (empty($type) || !is_array($ids) || !count($ids) || !in_array($type, array('post', 'topic', 'message'))) | |
| { | |
| return; | |
| } | |
| $this->set_type_constraints($type); | |
| // Just check which elements are still having an assigned attachment | |
| // not orphaned by querying the attachments table | |
| $sql = 'SELECT ' . $this->attach_sql_id . ' | |
| FROM ' . ATTACHMENTS_TABLE . ' | |
| WHERE ' . $this->db->sql_in_set($this->attach_sql_id, $ids) | |
| . $this->sql_where; | |
| $result = $this->db->sql_query($sql); | |
| $remaining_ids = array(); | |
| while ($row = $this->db->sql_fetchrow($result)) | |
| { | |
| $remaining_ids[] = $row[$this->attach_sql_id]; | |
| } | |
| $this->db->sql_freeresult($result); | |
| // Now only unset those ids remaining | |
| $ids = array_diff($ids, $remaining_ids); | |
| if (count($ids)) | |
| { | |
| $sql = 'UPDATE ' . $this->resync_table . ' | |
| SET ' . $type . '_attachment = 0 | |
| WHERE ' . $this->db->sql_in_set($this->resync_sql_id, $ids); | |
| $this->db->sql_query($sql); | |
| } | |
| } | |
| } |