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: / usr / src / litespeed-wp-plugin / 7.1 / litespeed-cache / src /

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Directive	Local Value
IP Address	162.0.209.101
System	Linux premium169.web-hosting.com 4.18.0-553.50.1.lve.el8.x86_64 #1 SMP Thu Apr 17 19:10:24 UTC 2025 x86_64
User	luxeelil
PHP Version	8.0.30
Software	LiteSpeed
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Edit File : control.cls.php \| Size : 21.63 KB
<?php /** * The plugin cache-control class for X-Litespeed-Cache-Control * * @since 1.1.3 * @package LiteSpeed * @subpackage LiteSpeed/inc * @author LiteSpeed Technologies <info@litespeedtech.com> / namespace LiteSpeed; defined('WPINC') \|\| exit(); class Control extends Root { const LOG_TAG = '💵'; const BM_CACHEABLE = 1; const BM_PRIVATE = 2; const BM_SHARED = 4; const BM_NO_VARY = 8; const BM_FORCED_CACHEABLE = 32; const BM_PUBLIC_FORCED = 64; const BM_STALE = 128; const BM_NOTCACHEABLE = 256; const X_HEADER = 'X-LiteSpeed-Cache-Control'; protected static $_control = 0; protected static $_custom_ttl = 0; private $_response_header_ttls = array(); /* * Init cache control * * @since 1.6.2 / public function init() { /* * Add vary filter for Role Excludes * @since 1.6.2 / add_filter('litespeed_vary', array($this, 'vary_add_role_exclude')); // 301 redirect hook add_filter('wp_redirect', array($this, 'check_redirect'), 10, 2); // Load response header conf $this->_response_header_ttls = $this->conf(Base::O_CACHE_TTL_STATUS); foreach ($this->_response_header_ttls as $k => $v) { $v = explode(' ', $v); if (empty($v[0]) \|\| empty($v[1])) { continue; } $this->_response_header_ttls[$v[0]] = $v[1]; } if ($this->conf(Base::O_PURGE_STALE)) { $this->set_stale(); } } /* * Exclude role from optimization filter * * @since 1.6.2 * @access public / public function vary_add_role_exclude($vary) { if ($this->in_cache_exc_roles()) { $vary['role_exclude_cache'] = 1; } return $vary; } /* * Check if one user role is in exclude cache group settings * * @since 1.6.2 * @since 3.0 Moved here from conf.cls * @access public * @param string $role The user role * @return int The set value if already set / public function in_cache_exc_roles($role = null) { // Get user role if ($role === null) { $role = Router::get_role(); } if (!$role) { return false; } $roles = explode(',', $role); $found = array_intersect($roles, $this->conf(Base::O_CACHE_EXC_ROLES)); return $found ? implode(',', $found) : false; } /* * 1. Initialize cacheable status for `wp` hook * 2. Hook error page tags for cacheable pages * * @since 1.1.3 * @access public / public function init_cacheable() { // Hook `wp` to mark default cacheable status // NOTE: Any process that does NOT run into `wp` hook will not get cacheable by default add_action('wp', array($this, 'set_cacheable'), 5); // Hook WP REST to be cacheable if ($this->conf(Base::O_CACHE_REST)) { add_action('rest_api_init', array($this, 'set_cacheable'), 5); } // Cache resources // NOTE: If any strange resource doesn't use normal WP logic `wp_loaded` hook, rewrite rule can handle it $cache_res = $this->conf(Base::O_CACHE_RES); if ($cache_res) { $uri = esc_url($_SERVER['REQUEST_URI']); // todo: check if need esc_url() $pattern = '!' . LSCWP_CONTENT_FOLDER . Htaccess::RW_PATTERN_RES . '!'; if (preg_match($pattern, $uri)) { add_action('wp_loaded', array($this, 'set_cacheable'), 5); } } // AJAX cache $ajax_cache = $this->conf(Base::O_CACHE_AJAX_TTL); foreach ($ajax_cache as $v) { $v = explode(' ', $v); if (empty($v[0]) \|\| empty($v[1])) { continue; } // self::debug("Initializing cacheable status for wp_ajax_nopriv_" . $v[0]); add_action( 'wp_ajax_nopriv_' . $v[0], function () use ($v) { self::set_custom_ttl($v[1]); self::force_cacheable('ajax Cache setting for action ' . $v[0]); }, 4 ); } // Check error page add_filter('status_header', array($this, 'check_error_codes'), 10, 2); } /* * Check if the page returns any error code. * * @since 1.0.13.1 * @access public * @param $status_header * @param $code * @return $error_status / public function check_error_codes($status_header, $code) { if (array_key_exists($code, $this->_response_header_ttls)) { if (self::is_cacheable() && !$this->_response_header_ttls[$code]) { self::set_nocache('[Ctrl] TTL is set to no cache [status_header] ' . $code); } // Set TTL self::set_custom_ttl($this->_response_header_ttls[$code]); } elseif (self::is_cacheable()) { if (substr($code, 0, 1) == 4 \|\| substr($code, 0, 1) == 5) { self::set_nocache('[Ctrl] 4xx/5xx default to no cache [status_header] ' . $code); } } // Set cache tag if (in_array($code, Tag::$error_code_tags)) { Tag::add(Tag::TYPE_HTTP . $code); } // Give the default status_header back return $status_header; } /* * Set no vary setting * * @access public * @since 1.1.3 / public static function set_no_vary() { if (self::is_no_vary()) { return; } self::$_control \|= self::BM_NO_VARY; self::debug('X Cache_control -> no-vary', 3); } /* * Get no vary setting * * @access public * @since 1.1.3 / public static function is_no_vary() { return self::$_control & self::BM_NO_VARY; } /* * Set stale * * @access public * @since 1.1.3 / public function set_stale() { if (self::is_stale()) { return; } self::$_control \|= self::BM_STALE; self::debug('X Cache_control -> stale'); } /* * Get stale * * @access public * @since 1.1.3 / public static function is_stale() { return self::$_control & self::BM_STALE; } /* * Set cache control to shared private * * @access public * @since 1.1.3 * @param string $reason The reason to no cache / public static function set_shared($reason = false) { if (self::is_shared()) { return; } self::$_control \|= self::BM_SHARED; self::set_private(); if (!is_string($reason)) { $reason = false; } if ($reason) { $reason = "( $reason )"; } self::debug('X Cache_control -> shared ' . $reason); } /* * Check if is shared private * * @access public * @since 1.1.3 / public static function is_shared() { return self::$_control & self::BM_SHARED && self::is_private(); } /* * Set cache control to forced public * * @access public * @since 1.7.1 / public static function set_public_forced($reason = false) { if (self::is_public_forced()) { return; } self::$_control \|= self::BM_PUBLIC_FORCED; if (!is_string($reason)) { $reason = false; } if ($reason) { $reason = "( $reason )"; } self::debug('X Cache_control -> public forced ' . $reason); } /* * Check if is public forced * * @access public * @since 1.7.1 / public static function is_public_forced() { return self::$_control & self::BM_PUBLIC_FORCED; } /* * Set cache control to private * * @access public * @since 1.1.3 * @param string $reason The reason to no cache / public static function set_private($reason = false) { if (self::is_private()) { return; } self::$_control \|= self::BM_PRIVATE; if (!is_string($reason)) { $reason = false; } if ($reason) { $reason = "( $reason )"; } self::debug('X Cache_control -> private ' . $reason); } /* * Check if is private * * @access public * @since 1.1.3 / public static function is_private() { if (defined('LITESPEED_GUEST') && LITESPEED_GUEST) { // return false; } return self::$_control & self::BM_PRIVATE && !self::is_public_forced(); } /* * Initialize cacheable status in `wp` hook, if not call this, by default it will be non-cacheable * * @access public * @since 1.1.3 / public function set_cacheable($reason = false) { self::$_control \|= self::BM_CACHEABLE; if (!is_string($reason)) { $reason = false; } if ($reason) { $reason = ' [reason] ' . $reason; } self::debug('Cache_control init on' . $reason); } /* * This will disable non-cacheable BM * * @access public * @since 2.2 / public static function force_cacheable($reason = false) { self::$_control \|= self::BM_FORCED_CACHEABLE; if (!is_string($reason)) { $reason = false; } if ($reason) { $reason = ' [reason] ' . $reason; } self::debug('Forced cacheable' . $reason); } /* * Switch to nocacheable status * * @access public * @since 1.1.3 * @param string $reason The reason to no cache / public static function set_nocache($reason = false) { self::$_control \|= self::BM_NOTCACHEABLE; if (!is_string($reason)) { $reason = false; } if ($reason) { $reason = "( $reason )"; } self::debug('X Cache_control -> no Cache ' . $reason, 5); } /* * Check current notcacheable bit set * * @access public * @since 1.1.3 * @return bool True if notcacheable bit is set, otherwise false. / public static function isset_notcacheable() { return self::$_control & self::BM_NOTCACHEABLE; } /* * Check current force cacheable bit set * * @access public * @since 2.2 / public static function is_forced_cacheable() { return self::$_control & self::BM_FORCED_CACHEABLE; } /* * Check current cacheable status * * @access public * @since 1.1.3 * @return bool True if is still cacheable, otherwise false. / public static function is_cacheable() { if (defined('LSCACHE_NO_CACHE') && LSCACHE_NO_CACHE) { self::debug('LSCACHE_NO_CACHE constant defined'); return false; } // Guest mode always cacheable if (defined('LITESPEED_GUEST') && LITESPEED_GUEST) { // return true; } // If its forced public cacheable if (self::is_public_forced()) { return true; } // If its forced cacheable if (self::is_forced_cacheable()) { return true; } return !self::isset_notcacheable() && self::$_control & self::BM_CACHEABLE; } /* * Set a custom TTL to use with the request if needed. * * @access public * @since 1.1.3 * @param mixed $ttl An integer or string to use as the TTL. Must be numeric. / public static function set_custom_ttl($ttl, $reason = false) { if (is_numeric($ttl)) { self::$_custom_ttl = $ttl; self::debug('X Cache_control TTL -> ' . $ttl . ($reason ? ' [reason] ' . $ttl : '')); } } /* * Generate final TTL. * * @access public * @since 1.1.3 / public function get_ttl() { if (self::$_custom_ttl != 0) { return self::$_custom_ttl; } // Check if is in timed url list or not $timed_urls = Utility::wildcard2regex($this->conf(Base::O_PURGE_TIMED_URLS)); $timed_urls_time = $this->conf(Base::O_PURGE_TIMED_URLS_TIME); if ($timed_urls && $timed_urls_time) { $current_url = Tag::build_uri_tag(true); // Use time limit ttl $scheduled_time = strtotime($timed_urls_time); $ttl = $scheduled_time - time(); if ($ttl < 0) { $ttl += 86400; // add one day } foreach ($timed_urls as $v) { if (strpos($v, '') !== false) { if (preg_match('#' . $v . '#iU', $current_url)) { self::debug('X Cache_control TTL is limited to ' . $ttl . ' due to scheduled purge regex ' . $v); return $ttl; } } else { if ($v == $current_url) { self::debug('X Cache_control TTL is limited to ' . $ttl . ' due to scheduled purge rule ' . $v); return $ttl; } } } } // Private cache uses private ttl setting if (self::is_private()) { return $this->conf(Base::O_CACHE_TTL_PRIV); } if (is_front_page()) { return $this->conf(Base::O_CACHE_TTL_FRONTPAGE); } $feed_ttl = $this->conf(Base::O_CACHE_TTL_FEED); if (is_feed() && $feed_ttl > 0) { return $feed_ttl; } if ($this->cls('REST')->is_rest() \|\| $this->cls('REST')->is_internal_rest()) { return $this->conf(Base::O_CACHE_TTL_REST); } return $this->conf(Base::O_CACHE_TTL_PUB); } /** * Check if need to set no cache status for redirection or not * * @access public * @since 1.1.3 / public function check_redirect($location, $status) { // TODO: some env don't have SCRIPT_URI but only REQUEST_URI, need to be compatible if (!empty($_SERVER['SCRIPT_URI'])) { // dont check $status == '301' anymore self::debug('301 from ' . $_SERVER['SCRIPT_URI']); self::debug("301 to $location"); $to_check = array(PHP_URL_SCHEME, PHP_URL_HOST, PHP_URL_PATH, PHP_URL_QUERY); $is_same_redirect = true; foreach ($to_check as $v) { $url_parsed = $v == PHP_URL_QUERY ? $_SERVER['QUERY_STRING'] : parse_url($_SERVER['SCRIPT_URI'], $v); $target = parse_url($location, $v); self::debug("Compare [from] $url_parsed [to] $target"); if ($v == PHP_URL_QUERY) { $url_parsed = $url_parsed ? urldecode($url_parsed) : ''; $target = $target ? urldecode($target) : ''; if (substr($url_parsed, -1) == '&') { $url_parsed = substr($url_parsed, 0, -1); } } if ($url_parsed != $target) { $is_same_redirect = false; self::debug('301 different redirection'); break; } } if ($is_same_redirect) { self::set_nocache('301 to same url'); } } return $location; } /* * Sets up the Cache Control header. * * @since 1.1.3 * @access public * @return string empty string if empty, otherwise the cache control header. / public function output() { $esi_hdr = ''; if (ESI::has_esi()) { $esi_hdr = ',esi=on'; } $hdr = self::X_HEADER . ': '; if (defined('DONOTCACHEPAGE') && apply_filters('litespeed_const_DONOTCACHEPAGE', DONOTCACHEPAGE)) { self::debug('❌ forced no cache [reason] DONOTCACHEPAGE const'); $hdr .= 'no-cache' . $esi_hdr; return $hdr; } // Guest mode directly return cacheable result // if ( defined( 'LITESPEED_GUEST' ) && LITESPEED_GUEST ) { // // If is POST, no cache // if ( defined( 'LSCACHE_NO_CACHE' ) && LSCACHE_NO_CACHE ) { // self::debug( "[Ctrl] ❌ forced no cache [reason] LSCACHE_NO_CACHE const" ); // $hdr .= 'no-cache'; // } // else if( $_SERVER[ 'REQUEST_METHOD' ] !== 'GET' ) { // self::debug( "[Ctrl] ❌ forced no cache [reason] req not GET" ); // $hdr .= 'no-cache'; // } // else { // $hdr .= 'public'; // $hdr .= ',max-age=' . $this->get_ttl(); // } // $hdr .= $esi_hdr; // return $hdr; // } // Fix cli `uninstall --deactivate` fatal err if (!self::is_cacheable()) { $hdr .= 'no-cache' . $esi_hdr; return $hdr; } if (self::is_shared()) { $hdr .= 'shared,private'; } elseif (self::is_private()) { $hdr .= 'private'; } else { $hdr .= 'public'; } if (self::is_no_vary()) { $hdr .= ',no-vary'; } $hdr .= ',max-age=' . $this->get_ttl() . $esi_hdr; return $hdr; } /* * Generate all `control` tags before output * * @access public * @since 1.1.3 / public function finalize() { if (defined('LITESPEED_GUEST') && LITESPEED_GUEST) { // return; } if (is_preview()) { self::set_nocache('preview page'); return; } // Check if has metabox non-cacheable setting or not if (file_exists(LSCWP_DIR . 'src/metabox.cls.php') && $this->cls('Metabox')->setting('litespeed_no_cache')) { self::set_nocache('per post metabox setting'); return; } // Check if URI is forced public cache $excludes = $this->conf(Base::O_CACHE_FORCE_PUB_URI); $hit = Utility::str_hit_array($_SERVER['REQUEST_URI'], $excludes, true); if ($hit) { list($result, $this_ttl) = $hit; self::set_public_forced('Setting: ' . $result); self::debug('Forced public cacheable due to setting: ' . $result); if ($this_ttl) { self::set_custom_ttl($this_ttl); } } if (self::is_public_forced()) { return; } // Check if URI is forced cache $excludes = $this->conf(Base::O_CACHE_FORCE_URI); $hit = Utility::str_hit_array($_SERVER['REQUEST_URI'], $excludes, true); if ($hit) { list($result, $this_ttl) = $hit; self::force_cacheable(); self::debug('Forced cacheable due to setting: ' . $result); if ($this_ttl) { self::set_custom_ttl($this_ttl); } } // if is not cacheable, terminate check // Even no need to run 3rd party hook if (!self::is_cacheable()) { self::debug('not cacheable before ctrl finalize'); return; } // Apply 3rd party filter // NOTE: Hook always needs to run asap because some 3rd party set is_mobile in this hook do_action('litespeed_control_finalize', defined('LSCACHE_IS_ESI') ? LSCACHE_IS_ESI : false); // Pass ESI block id // if is not cacheable, terminate check if (!self::is_cacheable()) { self::debug('not cacheable after api_control'); return; } // Check litespeed setting to set cacheable status if (!$this->_setting_cacheable()) { self::set_nocache(); return; } // If user has password cookie, do not cache (moved from vary) global $post; if (!empty($post->post_password) && isset($_COOKIE['wp-postpass_' . COOKIEHASH])) { // If user has password cookie, do not cache self::set_nocache('pswd cookie'); return; } // The following check to the end is ONLY for mobile $is_mobile = apply_filters('litespeed_is_mobile', false); if (!$this->conf(Base::O_CACHE_MOBILE)) { if ($is_mobile) { self::set_nocache('mobile'); } return; } $env_vary = isset($_SERVER['LSCACHE_VARY_VALUE']) ? $_SERVER['LSCACHE_VARY_VALUE'] : false; if (!$env_vary) { $env_vary = isset($_SERVER['HTTP_X_LSCACHE_VARY_VALUE']) ? $_SERVER['HTTP_X_LSCACHE_VARY_VALUE'] : false; } if ($env_vary && strpos($env_vary, 'ismobile') !== false) { if (!wp_is_mobile() && !$is_mobile) { self::set_nocache('is not mobile'); // todo: no need to uncache, it will correct vary value in vary finalize anyways return; } } elseif (wp_is_mobile() \|\| $is_mobile) { self::set_nocache('is mobile'); return; } } /* * Check if is mobile for filter `litespeed_is_mobile` in API * * @since 3.0 * @access public / public static function is_mobile() { return wp_is_mobile(); } /* * Get request method w/ compatibility to X-Http-Method-Override * * @since 6.2 / private function _get_req_method() { if (isset($_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE'])) { self::debug('X-Http-Method-Override -> ' . $_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE']); defined('LITESPEED_X_HTTP_METHOD_OVERRIDE') \|\| define('LITESPEED_X_HTTP_METHOD_OVERRIDE', true); return $_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE']; } if (isset($_SERVER['REQUEST_METHOD'])) { return $_SERVER['REQUEST_METHOD']; } return 'unknown'; } /* * Check if a page is cacheable based on litespeed setting. * * @since 1.0.0 * @access private * @return boolean True if cacheable, false otherwise. / private function _setting_cacheable() { // logged_in users already excluded, no hook added if (!empty($_REQUEST[Router::ACTION])) { return $this->_no_cache_for('Query String Action'); } $method = $this->_get_req_method(); if (defined('LITESPEED_X_HTTP_METHOD_OVERRIDE') && LITESPEED_X_HTTP_METHOD_OVERRIDE && $method == 'HEAD') { return $this->_no_cache_for('HEAD method from override'); } if ('GET' !== $method && 'HEAD' !== $method) { return $this->_no_cache_for('Not GET method: ' . $method); } if (is_feed() && $this->conf(Base::O_CACHE_TTL_FEED) == 0) { return $this->_no_cache_for('feed'); } if (is_trackback()) { return $this->_no_cache_for('trackback'); } if (is_search()) { return $this->_no_cache_for('search'); } // if ( !defined('WP_USE_THEMES') \|\| !WP_USE_THEMES ) { // return $this->_no_cache_for('no theme used'); // } // Check private cache URI setting $excludes = $this->conf(Base::O_CACHE_PRIV_URI); $result = Utility::str_hit_array($_SERVER['REQUEST_URI'], $excludes); if ($result) { self::set_private('Admin cfg Private Cached URI: ' . $result); } if (!self::is_forced_cacheable()) { // Check if URI is excluded from cache $excludes = $this->cls('Data')->load_cache_nocacheable($this->conf(Base::O_CACHE_EXC)); $result = Utility::str_hit_array($_SERVER['REQUEST_URI'], $excludes); if ($result) { return $this->_no_cache_for('Admin configured URI Do not cache: ' . $result); } // Check QS excluded setting $excludes = $this->conf(Base::O_CACHE_EXC_QS); if (!empty($excludes) && ($qs = $this->_is_qs_excluded($excludes))) { return $this->_no_cache_for('Admin configured QS Do not cache: ' . $qs); } $excludes = $this->conf(Base::O_CACHE_EXC_CAT); if (!empty($excludes) && has_category($excludes)) { return $this->_no_cache_for('Admin configured Category Do not cache.'); } $excludes = $this->conf(Base::O_CACHE_EXC_TAG); if (!empty($excludes) && has_tag($excludes)) { return $this->_no_cache_for('Admin configured Tag Do not cache.'); } $excludes = $this->conf(Base::O_CACHE_EXC_COOKIES); if (!empty($excludes) && !empty($_COOKIE)) { $cookie_hit = array_intersect(array_keys($_COOKIE), $excludes); if ($cookie_hit) { return $this->_no_cache_for('Admin configured Cookie Do not cache.'); } } $excludes = $this->conf(Base::O_CACHE_EXC_USERAGENTS); if (!empty($excludes) && isset($_SERVER['HTTP_USER_AGENT'])) { $nummatches = preg_match(Utility::arr2regex($excludes), $_SERVER['HTTP_USER_AGENT']); if ($nummatches) { return $this->_no_cache_for('Admin configured User Agent Do not cache.'); } } // Check if is exclude roles ( Need to set Vary too ) if ($result = $this->in_cache_exc_roles()) { return $this->_no_cache_for('Role Excludes setting ' . $result); } } return true; } /* * Write a debug message for if a page is not cacheable. * * @since 1.0.0 * @access private * @param string $reason An explanation for why the page is not cacheable. * @return boolean Return false. / private function _no_cache_for($reason) { self::debug('X Cache_control off - ' . $reason); return false; } /* * Check if current request has qs excluded setting * * @since 1.3 * @access private * @param array $excludes QS excludes setting * @return boolean\|string False if not excluded, otherwise the hit qs list */ private function _is_qs_excluded($excludes) { if (!empty($_GET) && ($intersect = array_intersect(array_keys($_GET), $excludes))) { return implode(',', $intersect); } return false; } } Back

Edit File : control.cls.php | Size : 21.63 KB

<?php

/**
 * The plugin cache-control class for X-Litespeed-Cache-Control
 *
 * @since      	1.1.3
 * @package    	LiteSpeed
 * @subpackage 	LiteSpeed/inc
 * @author     	LiteSpeed Technologies <info@litespeedtech.com>
 */

namespace LiteSpeed;

defined('WPINC') || exit();

class Control extends Root
{
	const LOG_TAG = '💵';

const BM_CACHEABLE = 1;
	const BM_PRIVATE = 2;
	const BM_SHARED = 4;
	const BM_NO_VARY = 8;
	const BM_FORCED_CACHEABLE = 32;
	const BM_PUBLIC_FORCED = 64;
	const BM_STALE = 128;
	const BM_NOTCACHEABLE = 256;

const X_HEADER = 'X-LiteSpeed-Cache-Control';

protected static $_control = 0;
	protected static $_custom_ttl = 0;

private $_response_header_ttls = array();

/**
	 * Init cache control
	 *
	 * @since  1.6.2
	 */
	public function init()
	{
		/**
		 * Add vary filter for Role Excludes
		 * @since  1.6.2
		 */
		add_filter('litespeed_vary', array($this, 'vary_add_role_exclude'));

// 301 redirect hook
		add_filter('wp_redirect', array($this, 'check_redirect'), 10, 2);

// Load response header conf
		$this->_response_header_ttls = $this->conf(Base::O_CACHE_TTL_STATUS);
		foreach ($this->_response_header_ttls as $k => $v) {
			$v = explode(' ', $v);
			if (empty($v[0]) || empty($v[1])) {
				continue;
			}
			$this->_response_header_ttls[$v[0]] = $v[1];
		}

if ($this->conf(Base::O_PURGE_STALE)) {
			$this->set_stale();
		}
	}

/**
	 * Exclude role from optimization filter
	 *
	 * @since  1.6.2
	 * @access public
	 */
	public function vary_add_role_exclude($vary)
	{
		if ($this->in_cache_exc_roles()) {
			$vary['role_exclude_cache'] = 1;
		}

return $vary;
	}

/**
	 * Check if one user role is in exclude cache group settings
	 *
	 * @since 1.6.2
	 * @since 3.0 Moved here from conf.cls
	 * @access public
	 * @param  string $role The user role
	 * @return int       The set value if already set
	 */
	public function in_cache_exc_roles($role = null)
	{
		// Get user role
		if ($role === null) {
			$role = Router::get_role();
		}

if (!$role) {
			return false;
		}

$roles = explode(',', $role);
		$found = array_intersect($roles, $this->conf(Base::O_CACHE_EXC_ROLES));

return $found ? implode(',', $found) : false;
	}

/**
	 * 1. Initialize cacheable status for `wp` hook
	 * 2. Hook error page tags for cacheable pages
	 *
	 * @since 1.1.3
	 * @access public
	 */
	public function init_cacheable()
	{
		// Hook `wp` to mark default cacheable status
		// NOTE: Any process that does NOT run into `wp` hook will not get cacheable by default
		add_action('wp', array($this, 'set_cacheable'), 5);

// Hook WP REST to be cacheable
		if ($this->conf(Base::O_CACHE_REST)) {
			add_action('rest_api_init', array($this, 'set_cacheable'), 5);
		}

// Cache resources
		// NOTE: If any strange resource doesn't use normal WP logic `wp_loaded` hook, rewrite rule can handle it
		$cache_res = $this->conf(Base::O_CACHE_RES);
		if ($cache_res) {
			$uri = esc_url($_SERVER['REQUEST_URI']); // todo: check if need esc_url()
			$pattern = '!' . LSCWP_CONTENT_FOLDER . Htaccess::RW_PATTERN_RES . '!';
			if (preg_match($pattern, $uri)) {
				add_action('wp_loaded', array($this, 'set_cacheable'), 5);
			}
		}

// AJAX cache
		$ajax_cache = $this->conf(Base::O_CACHE_AJAX_TTL);
		foreach ($ajax_cache as $v) {
			$v = explode(' ', $v);
			if (empty($v[0]) || empty($v[1])) {
				continue;
			}
			// self::debug("Initializing cacheable status for wp_ajax_nopriv_" . $v[0]);
			add_action(
				'wp_ajax_nopriv_' . $v[0],
				function () use ($v) {
					self::set_custom_ttl($v[1]);
					self::force_cacheable('ajax Cache setting for action ' . $v[0]);
				},
				4
			);
		}

// Check error page
		add_filter('status_header', array($this, 'check_error_codes'), 10, 2);
	}

/**
	 * Check if the page returns any error code.
	 *
	 * @since 1.0.13.1
	 * @access public
	 * @param $status_header
	 * @param $code
	 * @return $error_status
	 */
	public function check_error_codes($status_header, $code)
	{
		if (array_key_exists($code, $this->_response_header_ttls)) {
			if (self::is_cacheable() && !$this->_response_header_ttls[$code]) {
				self::set_nocache('[Ctrl] TTL is set to no cache [status_header] ' . $code);
			}

// Set TTL
			self::set_custom_ttl($this->_response_header_ttls[$code]);
		} elseif (self::is_cacheable()) {
			if (substr($code, 0, 1) == 4 || substr($code, 0, 1) == 5) {
				self::set_nocache('[Ctrl] 4xx/5xx default to no cache [status_header] ' . $code);
			}
		}

// Set cache tag
		if (in_array($code, Tag::$error_code_tags)) {
			Tag::add(Tag::TYPE_HTTP . $code);
		}

// Give the default status_header back
		return $status_header;
	}

/**
	 * Set no vary setting
	 *
	 * @access public
	 * @since 1.1.3
	 */
	public static function set_no_vary()
	{
		if (self::is_no_vary()) {
			return;
		}
		self::$_control |= self::BM_NO_VARY;
		self::debug('X Cache_control -> no-vary', 3);
	}

/**
	 * Get no vary setting
	 *
	 * @access public
	 * @since 1.1.3
	 */
	public static function is_no_vary()
	{
		return self::$_control & self::BM_NO_VARY;
	}

/**
	 * Set stale
	 *
	 * @access public
	 * @since 1.1.3
	 */
	public function set_stale()
	{
		if (self::is_stale()) {
			return;
		}
		self::$_control |= self::BM_STALE;
		self::debug('X Cache_control -> stale');
	}

/**
	 * Get stale
	 *
	 * @access public
	 * @since 1.1.3
	 */
	public static function is_stale()
	{
		return self::$_control & self::BM_STALE;
	}

/**
	 * Set cache control to shared private
	 *
	 * @access public
	 * @since 1.1.3
	 * @param string $reason The reason to no cache
	 */
	public static function set_shared($reason = false)
	{
		if (self::is_shared()) {
			return;
		}
		self::$_control |= self::BM_SHARED;
		self::set_private();