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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) | |
{ | |
return isset($this->sql_rowset[$query_id]); | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
function sql_fetchrow($query_id) | |
{ | |
if ($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, $field) | |
{ | |
if ($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, $query_id) | |
{ | |
if ($rownum >= count($this->sql_rowset[$query_id])) | |
{ | |
return false; | |
} | |
$this->sql_row_pointer[$query_id] = $rownum; | |
return true; | |
} | |
/** | |
* {@inheritDoc} | |
*/ | |
function sql_freeresult($query_id) | |
{ | |
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); | |
} | |
} |