| 1 |
<?php |
| 2 |
/** |
| 3 |
* Docket Cache. |
| 4 |
* |
| 5 |
* @author Nawawi Jamili |
| 6 |
* @license MIT |
| 7 |
* |
| 8 |
* @see https://github.com/nawawi/docket-cache |
| 9 |
*/ |
| 10 |
|
| 11 |
/* |
| 12 |
* This class is a minimal version of cache.php, only used for object-cache.php. |
| 13 |
* |
| 14 |
* Reference: |
| 15 |
* wp-content/plugins/docket-cache/includes/cache.php |
| 16 |
* wp-content/plugins/docket-cache/includes/object-cache.php |
| 17 |
*/ |
| 18 |
|
| 19 |
namespace Nawawi\DocketCache; |
| 20 |
|
| 21 |
\defined('ABSPATH') || exit; |
| 22 |
|
| 23 |
final class Becache |
| 24 |
{ |
| 25 |
private $cache_path; |
| 26 |
private $cache_maxsize = 3145728; |
| 27 |
private $cache_maxttl = 345600; |
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private $multisite = false; |
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private $blog_prefix; |
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private $qlimit = 1000; |
| 31 |
private static $inst; |
| 32 |
private $network_id = 1; |
| 33 |
private $max_execution_time = 0; |
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|
| 35 |
public function __construct() |
| 36 |
{ |
| 37 |
$this->multisite = \function_exists('is_multisite') && is_multisite(); |
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$this->blog_prefix = $this->switch_to_blog(get_current_blog_id()); |
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|
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$this->cache_path = $this->fs()->define_cache_path($this->cf()->dcvalue('PATH')); |
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if (\function_exists('is_multisite') && is_multisite()) { |
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$this->cache_path = nwdcx_network_dirpath($this->cache_path); |
| 43 |
} |
| 44 |
|
| 45 |
if ($this->cf()->is_dcint('MAXSIZE', $dcvalue)) { |
| 46 |
if (!empty($dcvalue)) { |
| 47 |
$this->cache_maxsize = $this->fs()->sanitize_maxsize($dcvalue); |
| 48 |
} |
| 49 |
} |
| 50 |
|
| 51 |
if ($this->cf()->is_dcint('MAXTTL', $dcvalue)) { |
| 52 |
if (!empty($dcvalue)) { |
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$this->cache_maxttl = $this->fs()->sanitize_maxttl($dcvalue); |
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} |
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} |
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|
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$this->network_id = (int) nwdcx_network_id(); |
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$this->max_execution_time = $this->fs()->get_max_execution_time(); |
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} |
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|
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public static function export() |
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{ |
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if (!isset(self::$inst)) { |
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self::$inst = new self(); |
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} |
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|
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self::$inst->export_transient(); |
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self::$inst->export_alloptions(); |
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} |
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|
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private function fs() |
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{ |
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static $inst; |
| 74 |
if (!\is_object($inst)) { |
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$inst = new Filesystem(); |
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} |
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|
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return $inst; |
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} |
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|
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private function cf() |
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{ |
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static $inst; |
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if (!\is_object($inst)) { |
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$inst = new Constans(); |
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} |
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|
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return $inst; |
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} |
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|
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private function cache_key($key, $group) |
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{ |
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if ($this->multisite && 'site-transient' === $group) { |
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$key = $this->blog_prefix.$key; |
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} |
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|
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return $key; |
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} |
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|
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private function item_hash($str, $length = 12) |
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{ |
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if (empty($length)) { |
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return md5($str); |
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} |
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|
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return substr(md5($str), 0, $length); |
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} |
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|
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private function get_file_path($key, $group) |
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{ |
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$hash_group = $this->item_hash($group); |
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$hash_key = $this->item_hash($key); |
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|
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$index = $hash_group.'-'.$hash_key; |
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|
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if ($this->cf()->is_dcfalse('CHUNKCACHEDIR', true)) { |
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return $this->cache_path.$index.'.php'; |
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} |
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|
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$chunk_path = $this->fs()->get_chunk_path($hash_group, $hash_key); |
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|
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return $this->cache_path.$chunk_path.$index.'.php'; |
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} |
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|
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private function dump_code($file, $arr) |
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{ |
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$data = $this->fs()->export_var($arr, $error); |
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if (false === $data) { |
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return false; |
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} |
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|
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$code = $this->fs()->code_stub($data); |
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$stat = $this->fs()->dump($file, $code, false); |
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|
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if (false === $stat) { |
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return false; |
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} |
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|
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if (-1 === $stat) { |
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return false; |
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} |
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|
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$this->fs()->validate_fatal_error_file($file); |
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|
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return $stat; |
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} |
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|
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private function store_cache($key, $data, $group, $expire = 0) |
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{ |
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if (!$this->fs()->mkdir_p($this->cache_path)) { |
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return false; |
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} |
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|
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$cache_key = $this->cache_key($key, $group); |
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$file = $this->get_file_path($cache_key, $group); |
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|
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// chunk dir |
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if ($this->cf()->is_dctrue('CHUNKCACHEDIR', true) && !$this->fs()->mkdir_p(\dirname($file))) { |
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return false; |
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} |
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|
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if ($this->fs()->is_transient($group)) { |
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// transient timeout already as timestamp in DB. |
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$timeout = $expire > 0 ? $expire : time() + 3600; |
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} elseif ('options' === $group) { |
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// initial set to 1 hour. |
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$timeout = time() + 3600; |
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} |
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|
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$timeout = $timeout > $this->cache_maxttl ? time() + $this->cache_maxttl : $timeout; |
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$type = \gettype($data); |
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if ('NULL' === $type && null === $data) { |
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$data = ''; |
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} |
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|
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if (!empty($data)) { |
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$len = 0; |
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$nwdcx_suppresserrors = nwdcx_suppresserrors(true); |
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if (\function_exists('maybe_serialize')) { |
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$len = \strlen(@maybe_serialize($data)); |
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} else { |
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$len = \strlen(@serialize($data)); |
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} |
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nwdcx_suppresserrors($nwdcx_suppresserrors); |
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|
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if ($len >= $this->cache_maxsize) { |
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$this->fs()->unlink($file, false); |
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|
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return false; |
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} |
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|
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if ('string' === $type) { |
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$data = nwdcx_unserialize($data); |
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} elseif ('array' === $type) { |
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$data_r = nwdcx_arraymap('nwdcx_unserialize', $data); |
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|
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if (!empty($data_r)) { |
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$data = $data_r; |
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} |
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unset($data_r); |
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} |
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} |
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|
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$meta = []; |
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$meta['timestamp'] = time(); |
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|
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if ($this->multisite) { |
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$meta['network_id'] = $this->network_id; |
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} |
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|
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$final_type = \gettype($data); |
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if ('string' === $final_type && nwdcx_serialized($data)) { |
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$final_type = 'string_serialize'; |
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} elseif ('array' === $final_type) { |
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$nwdcx_suppresserrors = nwdcx_suppresserrors(true); |
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$export_data = @var_export($data, 1); |
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if (!empty($export_data)) { |
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if (false !== strpos($export_data, 'Requests_Utility_CaseInsensitiveDictionary::__set_state')) { |
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$data = @serialize($data); |
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if (nwdcx_serialized($data)) { |
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$final_type = 'array_serialize'; |
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} |
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} |
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|
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if ('array' === $final_type && $this->fs()->is_transient($group) && false !== strpos($export_data, '::__set_state')) { |
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$data = @serialize($data); |
| 227 |
if (nwdcx_serialized($data)) { |
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$final_type = 'array_serialize'; |
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} |
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} |
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} |
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unset($export_data); |
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nwdcx_suppresserrors($nwdcx_suppresserrors); |
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} |
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|
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$meta['site_id'] = get_current_blog_id(); |
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$meta['group'] = $group; |
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$meta['key'] = $cache_key; |
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$meta['type'] = $final_type; |
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$meta['timeout'] = $timeout; |
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$meta['data'] = $data; |
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|
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if (true === $this->dump_code($file, $meta)) { |
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return true; |
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} |
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|
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return false; |
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} |
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|
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public function export_transient() |
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{ |
| 252 |
if ($this->cf()->is_dctrue('TRANSIENTDB')) { |
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return false; |
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} |
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|
| 256 |
if (!nwdcx_wpdb($wpdb)) { |
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return false; |
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} |
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|
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$suppress = $wpdb->suppress_errors(true); |
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$collect = []; |
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|
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// $results = $wpdb->get_results('SELECT `option_id`,`option_name`,`option_value` FROM `'.$wpdb->options.'` WHERE `option_name` LIKE "_transient_%" OR `option_name` LIKE "_site_transient_%" ORDER BY `option_id` ASC LIMIT '.$this->qlimit, ARRAY_A); |
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$results = $wpdb->get_results('SELECT `option_id`,`option_name`,`option_value` FROM `'.$wpdb->options.'` WHERE `option_name` RLIKE "^(_site)?(_transient)(_timeout)?_.*?" ORDER BY `option_id` ASC LIMIT '.$this->qlimit, ARRAY_A); |
| 265 |
if (!empty($results) && \is_array($results)) { |
| 266 |
while ($row = @array_shift($results)) { |
| 267 |
if ($this->max_execution_time > 0 && \defined('WP_START_TIMESTAMP') && (microtime(true) - WP_START_TIMESTAMP) > $this->max_execution_time) { |
| 268 |
$collect = []; |
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break; |
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} |
| 271 |
|
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// ignore empty value |
| 273 |
if ('' === $row['option_value']) { |
| 274 |
continue; |
| 275 |
} |
| 276 |
|
| 277 |
$key = @preg_replace('@^(_site)?(_transient)(_timeout)?_@', '', $row['option_name']); |
| 278 |
if (!isset($collect[$key])) { |
| 279 |
$collect[$key] = ['value' => '', 'group' => 'transient', 'timeout' => 0]; |
| 280 |
} |
| 281 |
|
| 282 |
$collect[$key]['value'] = $row['option_value']; |
| 283 |
if ('_site_' === substr($row['option_name'], 0, 6)) { |
| 284 |
$collect[$key]['group'] = 'site-transient'; |
| 285 |
} |
| 286 |
|
| 287 |
if (false !== strpos($row['option_name'], '_transient_timeout_')) { |
| 288 |
$collect[$key]['timeout'] = (int) $row['option_value']; |
| 289 |
|
| 290 |
if (time() > $collect[$key]['timeout']) { |
| 291 |
unset($collect[$key]); |
| 292 |
} |
| 293 |
} |
| 294 |
} |
| 295 |
|
| 296 |
if (!empty($collect)) { |
| 297 |
foreach ($collect as $key => $arr) { |
| 298 |
if ($this->max_execution_time > 0 && \defined('WP_START_TIMESTAMP') && (microtime(true) - WP_START_TIMESTAMP) > $this->max_execution_time) { |
| 299 |
break; |
| 300 |
} |
| 301 |
|
| 302 |
$timeout = isset($arr['timeout']) ? $arr['timeout'] : 0; |
| 303 |
$this->store_cache($key, $arr['value'], $arr['group'], $timeout); |
| 304 |
} |
| 305 |
} |
| 306 |
} |
| 307 |
|
| 308 |
$collect = []; |
| 309 |
|
| 310 |
if ($this->multisite && isset($wpdb->sitemeta)) { |
| 311 |
// $results = $wpdb->get_results('SELECT `meta_id`,`meta_key`,`meta_value` FROM `'.$wpdb->sitemeta.'` WHERE `meta_key` LIKE "_site_transient_%" ORDER BY `meta_id` ASC LIMIT '.$this->qlimit, ARRAY_A); |
| 312 |
$results = $wpdb->get_results('SELECT `meta_id`,`meta_key`,`meta_value` FROM `'.$wpdb->sitemeta.'` WHERE `meta_key` RLIKE "^(_site_transient)(_timeout)?_.*?" ORDER BY `meta_id` ASC LIMIT '.$this->qlimit, ARRAY_A); |
| 313 |
if (!empty($results) && \is_array($results)) { |
| 314 |
while ($row = @array_shift($results)) { |
| 315 |
if ($this->max_execution_time > 0 && \defined('WP_START_TIMESTAMP') && (microtime(true) - WP_START_TIMESTAMP) > $this->max_execution_time) { |
| 316 |
$collect = []; |
| 317 |
break; |
| 318 |
} |
| 319 |
|
| 320 |
// ignore empty value |
| 321 |
if ('' === $row['meta_value']) { |
| 322 |
continue; |
| 323 |
} |
| 324 |
|
| 325 |
$key = @preg_replace('@^(_site_transient)(_timeout)?_@', '', $row['meta_key']); |
| 326 |
if (!isset($collect[$key])) { |
| 327 |
$collect[$key] = ['value' => '', 'group' => 'site-transient', 'timeout' => 0]; |
| 328 |
} |
| 329 |
|
| 330 |
$collect[$key]['value'] = $row['meta_value']; |
| 331 |
|
| 332 |
if (false !== strpos($row['meta_key'], '_site_transient_timeout_')) { |
| 333 |
$collect[$key]['timeout'] = (int) $row['meta_value']; |
| 334 |
|
| 335 |
if (time() > $collect[$key]['timeout']) { |
| 336 |
unset($collect[$key]); |
| 337 |
} |
| 338 |
} |
| 339 |
} |
| 340 |
|
| 341 |
if (!empty($collect)) { |
| 342 |
foreach ($collect as $key => $arr) { |
| 343 |
$timeout = isset($arr['timeout']) ? $arr['timeout'] : 0; |
| 344 |
$this->store_cache($key, $arr['value'], $arr['group'], $timeout); |
| 345 |
} |
| 346 |
} |
| 347 |
} |
| 348 |
} |
| 349 |
|
| 350 |
unset($collect, $results); |
| 351 |
$wpdb->suppress_errors($suppress); |
| 352 |
|
| 353 |
return true; |
| 354 |
} |
| 355 |
|
| 356 |
public static function cleanup_transient() |
| 357 |
{ |
| 358 |
if (nwdcx_construe('TRANSIENTDB')) { |
| 359 |
return false; |
| 360 |
} |
| 361 |
|
| 362 |
if (\function_exists('nwdcx_cleanuptransient')) { |
| 363 |
return nwdcx_cleanuptransient(); |
| 364 |
} |
| 365 |
|
| 366 |
return false; |
| 367 |
} |
| 368 |
|
| 369 |
public function export_alloptions() |
| 370 |
{ |
| 371 |
if (!nwdcx_wpdb($wpdb) || $this->multisite) { |
| 372 |
return false; |
| 373 |
} |
| 374 |
|
| 375 |
// Only export if autoload=yes and not transient. |
| 376 |
$suppress = $wpdb->suppress_errors(true); |
| 377 |
$alloptions_db = $wpdb->get_results('SELECT `option_name`,`option_value` FROM `'.$wpdb->options.'` WHERE autoload = \'yes\' AND `option_name` NOT LIKE "_transient_%" AND `option_name` NOT LIKE "_site_transient_%"', ARRAY_A); |
| 378 |
if (empty($alloptions_db)) { |
| 379 |
return false; |
| 380 |
} |
| 381 |
$wpdb->suppress_errors($suppress); |
| 382 |
|
| 383 |
$alloptions = []; |
| 384 |
|
| 385 |
if (\is_array($alloptions_db)) { |
| 386 |
$is_filter = $this->cf()->is_dctrue('WPOPTALOAD', true); |
| 387 |
$wp_options = []; |
| 388 |
if ($is_filter) { |
| 389 |
$wp_options = $this->fs()->keys_alloptions(); |
| 390 |
} |
| 391 |
foreach ($alloptions_db as $num => $options) { |
| 392 |
if ($this->max_execution_time > 0 && \defined('WP_START_TIMESTAMP') && (microtime(true) - WP_START_TIMESTAMP) > $this->max_execution_time) { |
| 393 |
$alloptions = []; |
| 394 |
break; |
| 395 |
} |
| 396 |
|
| 397 |
$key = $options['option_name']; |
| 398 |
if ($is_filter && \array_key_exists($key, $wp_options)) { |
| 399 |
continue; |
| 400 |
} |
| 401 |
$alloptions[$key] = $options['option_value']; |
| 402 |
} |
| 403 |
|
| 404 |
if (!empty($alloptions)) { |
| 405 |
$this->store_cache('alloptions', $alloptions, 'options'); |
| 406 |
} |
| 407 |
} |
| 408 |
|
| 409 |
unset($alloptions, $alloptions_db); |
| 410 |
|
| 411 |
// always true |
| 412 |
return true; |
| 413 |
} |
| 414 |
|
| 415 |
private function switch_to_blog($blog_id) |
| 416 |
{ |
| 417 |
$blog_id = (int) $blog_id; |
| 418 |
$this->blog_prefix = $this->multisite ? $blog_id.':' : ''; |
| 419 |
} |
| 420 |
} |
| 421 |
|
