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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\cache\driver; | |
| abstract class base implements \phpbb\cache\driver\driver_interface | |
| { | |
| var $vars = array(); | |
| var $is_modified = false; | |
| var $sql_rowset = array(); | |
| var $sql_row_pointer = array(); | |
| var $cache_dir = ''; | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function purge() | |
| { | |
| // Purge all phpbb cache files | |
| try | |
| { | |
| $iterator = new \DirectoryIterator($this->cache_dir); | |
| } | |
| catch (\Exception $e) | |
| { | |
| return; | |
| } | |
| foreach ($iterator as $fileInfo) | |
| { | |
| if ($fileInfo->isDot()) | |
| { | |
| continue; | |
| } | |
| $filename = $fileInfo->getFilename(); | |
| if ($fileInfo->isDir()) | |
| { | |
| $this->remove_dir($fileInfo->getPathname()); | |
| } | |
| else if (strpos($filename, 'container_') === 0 || | |
| strpos($filename, 'autoload_') === 0 || | |
| strpos($filename, 'url_matcher') === 0 || | |
| strpos($filename, 'url_generator') === 0 || | |
| strpos($filename, 'sql_') === 0 || | |
| strpos($filename, 'data_') === 0) | |
| { | |
| $this->remove_file($fileInfo->getPathname()); | |
| } | |
| } | |
| unset($this->vars); | |
| unset($this->sql_rowset); | |
| unset($this->sql_row_pointer); | |
| if (function_exists('opcache_reset')) | |
| { | |
| @opcache_reset(); | |
| } | |
| $this->vars = array(); | |
| $this->sql_rowset = array(); | |
| $this->sql_row_pointer = array(); | |
| $this->is_modified = false; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function unload() | |
| { | |
| $this->save(); | |
| unset($this->vars); | |
| unset($this->sql_rowset); | |
| unset($this->sql_row_pointer); | |
| $this->vars = array(); | |
| $this->sql_rowset = array(); | |
| $this->sql_row_pointer = array(); | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function sql_load($query) | |
| { | |
| // Remove extra spaces and tabs | |
| $query = preg_replace('/[\n\r\s\t]+/', ' ', $query); | |
| $query_id = md5($query); | |
| if (($result = $this->_read('sql_' . $query_id)) === false) | |
| { | |
| return false; | |
| } | |
| $this->sql_rowset[$query_id] = $result; | |
| $this->sql_row_pointer[$query_id] = 0; | |
| return $query_id; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function sql_exists($query_id) | |
| { | |
| $query_id = $this->clean_query_id($query_id); | |
| return isset($this->sql_rowset[$query_id]); | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function sql_fetchrow($query_id) | |
| { | |
| $query_id = $this->clean_query_id($query_id); | |
| if ($this->sql_row_pointer[$query_id] < count($this->sql_rowset[$query_id])) | |
| { | |
| return $this->sql_rowset[$query_id][$this->sql_row_pointer[$query_id]++]; | |
| } | |
| return false; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function sql_fetchfield($query_id, $field) | |
| { | |
| $query_id = $this->clean_query_id($query_id); | |
| if ($this->sql_row_pointer[$query_id] < count($this->sql_rowset[$query_id])) | |
| { | |
| return (isset($this->sql_rowset[$query_id][$this->sql_row_pointer[$query_id]][$field])) ? $this->sql_rowset[$query_id][$this->sql_row_pointer[$query_id]++][$field] : false; | |
| } | |
| return false; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function sql_rowseek($rownum, $query_id) | |
| { | |
| $query_id = $this->clean_query_id($query_id); | |
| if ($rownum >= count($this->sql_rowset[$query_id])) | |
| { | |
| return false; | |
| } | |
| $this->sql_row_pointer[$query_id] = $rownum; | |
| return true; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function sql_freeresult($query_id) | |
| { | |
| $query_id = $this->clean_query_id($query_id); | |
| if (!isset($this->sql_rowset[$query_id])) | |
| { | |
| return false; | |
| } | |
| unset($this->sql_rowset[$query_id]); | |
| unset($this->sql_row_pointer[$query_id]); | |
| return true; | |
| } | |
| /** | |
| * Removes/unlinks file | |
| * | |
| * @param string $filename Filename to remove | |
| * @param bool $check Check file permissions | |
| * @return bool True if the file was successfully removed, otherwise false | |
| */ | |
| function remove_file($filename, $check = false) | |
| { | |
| global $phpbb_filesystem; | |
| if ($check && !$phpbb_filesystem->is_writable($this->cache_dir)) | |
| { | |
| // E_USER_ERROR - not using language entry - intended. | |
| trigger_error('Unable to remove files within ' . $this->cache_dir . '. Please check directory permissions.', E_USER_ERROR); | |
| } | |
| return @unlink($filename); | |
| } | |
| /** | |
| * Remove directory | |
| * | |
| * @param string $dir Directory to remove | |
| * | |
| * @return null | |
| */ | |
| protected function remove_dir($dir) | |
| { | |
| try | |
| { | |
| $iterator = new \DirectoryIterator($dir); | |
| } | |
| catch (\Exception $e) | |
| { | |
| return; | |
| } | |
| foreach ($iterator as $fileInfo) | |
| { | |
| if ($fileInfo->isDot()) | |
| { | |
| continue; | |
| } | |
| if ($fileInfo->isDir()) | |
| { | |
| $this->remove_dir($fileInfo->getPathname()); | |
| } | |
| else | |
| { | |
| $this->remove_file($fileInfo->getPathname()); | |
| } | |
| } | |
| @rmdir($dir); | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| public function clean_query_id($query_id) | |
| { | |
| // Some DBMS functions accept/return objects and/or resources instead of integer identifier | |
| // Attempting to cast object to int will throw error, hence correctly handle all cases | |
| if (is_resource($query_id)) | |
| { | |
| return function_exists('get_resource_id') ? get_resource_id($query_id) : (int) $query_id; | |
| } | |
| else | |
| { | |
| return is_object($query_id) ? spl_object_id($query_id) : $query_id; | |
| } | |
| } | |
| } |