+<?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, 'url_matcher') === 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);

+

+ if (($rowset = $this->_read('sql_' . md5($query))) === false)

+ {

+ return false;

+ }

+

+ $query_id = sizeof($this->sql_rowset);

+ $this->sql_rowset[$query_id] = $rowset;

+ $this->sql_row_pointer[$query_id] = 0;

+

+ return $query_id;

+ }

+

+ /**

+ * {@inheritDoc}

+ */

+ function sql_exists($query_id)

+ {

+ return isset($this->sql_rowset[$query_id]);

+ }

+

+ /**

+ * {@inheritDoc}

+ */

+ function sql_fetchrow($query_id)

+ {

+ if ($this->sql_row_pointer[$query_id] < sizeof($this->sql_rowset[$query_id]))

+ {

+ return $this->sql_rowset[$query_id][$this->sql_row_pointer[$query_id]++];

+ }

+

+ return false;

+ }

+

+ /**

+ * {@inheritDoc}

+ */

+ function sql_fetchfield($query_id, $field)

+ {

+ if ($this->sql_row_pointer[$query_id] < sizeof($this->sql_rowset[$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)

+ {

+ if ($rownum >= sizeof($this->sql_rowset[$query_id]))

+ {

+ return false;

+ }

+

+ $this->sql_row_pointer[$query_id] = $rownum;

+ return true;

+ }

+

+ /**

+ * {@inheritDoc}

+ */

+ function sql_freeresult($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)

+ {

+ if (!function_exists('phpbb_is_writable'))

+ {

+ global $phpbb_root_path, $phpEx;

+ include($phpbb_root_path . 'includes/functions.' . $phpEx);

+ }

+

+ if ($check && !phpbb_is_writable($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);

+ }

+}