golden hour

/home/godaofbq/cellsonic-usa.com/wp-content/plugins/litespeed-cache/src

File/Folder	Size	Actions
activation.cls.php	17.62 KB
admin-display.cls.php	48.76 KB
admin-settings.cls.php	12.77 KB
admin.cls.php	6.13 KB
api.cls.php	10.44 KB
avatar.cls.php	9.25 KB
base.cls.php	37.66 KB
cdn	-
cdn.cls.php	17.76 KB
cloud-auth-callback.trait.php	10.43 KB
cloud-auth-ip.trait.php	4.33 KB
cloud-auth.trait.php	9.38 KB
cloud-misc.trait.php	10.32 KB
cloud-node.trait.php	5.95 KB
cloud-queue-svc.cls.php	9.33 KB
cloud-request.trait.php	19.68 KB
cloud.cls.php	7.32 KB
conf.cls.php	19.53 KB
control.cls.php	24.35 KB
core.cls.php	21.53 KB
crawler-map.cls.php	22.3 KB
crawler.cls.php	44 KB
css.cls.php	7.26 KB
data.cls.php	22.2 KB
data.upgrade.func.php	6.41 KB
data_structure	-
db-optm.cls.php	15.35 KB
debug2.cls.php	18.4 KB
doc.cls.php	5.45 KB
error.cls.php	7.35 KB
esi.cls.php	31.37 KB
file.cls.php	13.75 KB
guest.cls.php	2.75 KB
gui.cls.php	35.09 KB
health.cls.php	4.66 KB
htaccess.cls.php	29.81 KB
img-optm-manage.trait.php	31.25 KB
img-optm-pull.trait.php	22.1 KB
img-optm-send.trait.php	20.77 KB
img-optm.cls.php	5.25 KB
import.cls.php	4.29 KB
import.preset.cls.php	5.5 KB
lang.cls.php	17.02 KB
localization.cls.php	4.03 KB
media.cls.php	44.06 KB
metabox.cls.php	5.29 KB
object-cache-wp.cls.php	18.82 KB
object-cache.cls.php	21.82 KB
object.lib.php	13.85 KB
optimax.cls.php	8.94 KB
optimize.cls.php	38.74 KB
optimizer.cls.php	12.71 KB
placeholder.cls.php	17.64 KB
purge.cls.php	35.48 KB
report.cls.php	7.53 KB
rest.cls.php	7.95 KB
root.cls.php	14.29 KB
router.cls.php	20.86 KB
str.cls.php	3.08 KB
tag.cls.php	9.26 KB
task.cls.php	8.98 KB
tool.cls.php	4.58 KB
ucss.cls.php	7.34 KB
utility.cls.php	27.11 KB
vary.cls.php	21.33 KB
vpi.cls.php	4.25 KB

Edit: esi.cls.php

<?php
// phpcs:ignoreFile

/**
 * The ESI class.
 *
 * This is used to define all esi related functions.
 *
 * @since       1.1.3
 * @package     LiteSpeed
 */

namespace LiteSpeed;

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

class ESI extends Root {

const LOG_TAG = '⏺';

private static $has_esi        = false;
	private static $_combine_ids   = array();
	private static $_clean_counter = 0;
	private $esi_args              = null;
	private $_esi_preserve_list  = array();
	private $_nonce_actions      = array( -1 => '' ); // val is cache control

const QS_ACTION = 'lsesi';
	const QS_PARAMS = 'esi';
	const COMBO     = '__combo'; // ESI include combine='main' handler

const PARAM_ARGS     = 'args';
	const PARAM_ID       = 'id';
	const PARAM_INSTANCE = 'instance';
	const PARAM_NAME     = 'name';

const WIDGET_O_ESIENABLE = 'widget_esi_enable';
	const WIDGET_O_TTL       = 'widget_ttl';

/**
	 * Confructor of ESI
	 *
	 * @since  1.2.0
	 * @since  4.0 Change to be after Vary init in hook 'after_setup_theme'
	 */
	public function init() {
		/**
		 * Bypass ESI related funcs if disabled ESI to fix potential DIVI compatibility issue
		 *
		 * @since  2.9.7.2
		 */
		if (Router::is_ajax() || !$this->cls('Router')->esi_enabled()) {
			return;
		}

// Guest mode, don't need to use ESI
		if (defined('LITESPEED_GUEST') && LITESPEED_GUEST) {
			return;
		}

if (defined('LITESPEED_ESI_OFF')) {
			return;
		}

// If page is not cacheable
		if (defined('DONOTCACHEPAGE') && apply_filters('litespeed_const_DONOTCACHEPAGE', DONOTCACHEPAGE)) {
			return;
		}

// Init ESI in `after_setup_theme` hook after detected if LITESPEED_DISABLE_ALL is ON or not
		$this->_hooks();

/**
		 * Overwrite wp_create_nonce func
		 *
		 * @since  2.9.5
		 */
		$this->_transform_nonce();

!defined('LITESPEED_ESI_INITED') && define('LITESPEED_ESI_INITED', true);
	}

/**
	 * Init ESI related hooks
	 *
	 * Load delayed by hook to give the ability to bypass by LITESPEED_DISABLE_ALL const
	 *
	 * @since 2.9.7.2
	 * @since  4.0 Changed to private from public
	 * @access private
	 */
	private function _hooks() {
		add_filter('template_include', array( $this, 'esi_template' ), 99999);

add_action('load-widgets.php', __NAMESPACE__ . '\Purge::purge_widget');
		add_action('wp_update_comment_count', __NAMESPACE__ . '\Purge::purge_comment_widget');

/**
		 * Recover REQUEST_URI
		 *
		 * @since  1.8.1
		 */
		if (!empty($_GET[self::QS_ACTION])) {
			self::debug('ESI req');
			$this->_register_esi_actions();
		}

/**
		 * Shortcode ESI
		 *
		 * To use it, just change the original shortcode as below:
		 *      old: [someshortcode aa='bb']
		 *      new: [esi someshortcode aa='bb' cache='private,no-vary' ttl='600']
		 *
		 *  1. `cache` attribute is optional, default to 'public,no-vary'.
		 *  2. `ttl` attribute is optional, default is your public TTL setting.
		 *  3. `_ls_silence` attribute is optional, default is false.
		 *
		 * @since  2.8
		 * @since  2.8.1 Check is_admin for Elementor compatibility #726013
		 */
		if (!is_admin()) {
			add_shortcode('esi', array( $this, 'shortcode' ));
		}
	}

/**
	 * Take over all nonce calls and transform to ESI
	 *
	 * @since  2.9.5
	 */
	private function _transform_nonce() {
		if (is_admin()) {
			return;
		}

// Load ESI nonces in conf
		$nonces = $this->conf(Base::O_ESI_NONCE);
		add_filter('litespeed_esi_nonces', array( $this->cls('Data'), 'load_esi_nonces' ));
		if ($nonces = apply_filters('litespeed_esi_nonces', $nonces)) {
			foreach ($nonces as $action) {
				$this->nonce_action($action);
			}
		}

add_action('litespeed_nonce', array( $this, 'nonce_action' ));
	}

/**
	 * Register a new nonce action to convert it to ESI
	 *
	 * @since  2.9.5
	 */
	public function nonce_action( $action ) {
		// Split the Cache Control
		$action  = explode(' ', $action);
		$control = !empty($action[1]) ? $action[1] : '';
		$action  = $action[0];

// Wildcard supported
		$action = Utility::wildcard2regex($action);

if (array_key_exists($action, $this->_nonce_actions)) {
			return;
		}

$this->_nonce_actions[$action] = $control;

// self::debug('[ESI] Appended nonce action to nonce list [action] ' . $action);
	}

/**
	 * Check if an action is registered to replace ESI
	 *
	 * @since 2.9.5
	 */
	public function is_nonce_action( $action ) {
		// If GM not run yet, then ESI not init yet, then ESI nonce will not be allowed even nonce func replaced.
		if (!defined('LITESPEED_ESI_INITED')) {
			return null;
		}

if (is_admin()) {
			return null;
		}

if (defined('LITESPEED_ESI_OFF')) {
			return null;
		}

foreach ($this->_nonce_actions as $k => $v) {
			if (strpos($k, '*') !== false) {
				if (preg_match('#' . $k . '#iU', $action)) {
					return $v;
				}
			} elseif ($k == $action) {
				return $v;
			}
		}

return null;
	}

/**
	 * Shortcode ESI
	 *
	 * @since 2.8
	 * @access public
	 */
	public function shortcode( $atts ) {
		if (empty($atts[0])) {
			self::debug('[ESI] ===shortcode wrong format', $atts);
			return 'Wrong shortcode esi format';
		}

$cache = 'public,no-vary';
		if (!empty($atts['cache'])) {
			$cache = $atts['cache'];
			unset($atts['cache']);
		}

$silence = false;
		if (!empty($atts['_ls_silence'])) {
			$silence = true;
		}

do_action('litespeed_esi_shortcode-' . $atts[0]);

// Show ESI link
		return $this->sub_esi_block('esi', 'esi-shortcode', $atts, $cache, $silence);
	}

/**
	 * Check if the requested page has esi elements. If so, return esi on
	 * header.
	 *
	 * @since 1.1.3
	 * @access public
	 * @return string Esi On header if request has esi, empty string otherwise.
	 */
	public static function has_esi() {
		return self::$has_esi;
	}

/**
	 * Sets that the requested page has esi elements.
	 *
	 * @since 1.1.3
	 * @access public
	 */
	public static function set_has_esi() {
		self::$has_esi = true;
	}

/**
	 * Register all of the hooks related to the esi logic of the plugin.
	 * Specifically when the page IS an esi page.
	 *
	 * @since    1.1.3
	 * @access   private
	 */
	private function _register_esi_actions() {
		/**
		 * This hook is in `init`
		 * For any plugin need to check if page is ESI, use `LSCACHE_IS_ESI` check after `init` hook
		 */
		!defined('LSCACHE_IS_ESI') && define('LSCACHE_IS_ESI', $_GET[self::QS_ACTION]); // Reused this to ESI block ID

!empty($_SERVER['ESI_REFERER']) && defined('LSCWP_LOG') && self::debug('[ESI] ESI_REFERER: ' . $_SERVER['ESI_REFERER']);

/**
		 * Only when ESI's parent is not REST, replace REQUEST_URI to avoid breaking WP5 editor REST call
		 *
		 * @since 2.9.3
		 */
		if (!empty($_SERVER['ESI_REFERER']) && !$this->cls('REST')->is_rest($_SERVER['ESI_REFERER'])) {
			self::debug('overwrite REQUEST_URI to ESI_REFERER [from] ' . $_SERVER['REQUEST_URI'] . ' [to] ' . $_SERVER['ESI_REFERER']);
			if (!empty($_SERVER['ESI_REFERER'])) {
				$_SERVER['REQUEST_URI'] = $_SERVER['ESI_REFERER'];
				if (substr(get_option('permalink_structure'), -1) === '/' && strpos($_SERVER['ESI_REFERER'], '?') === false) {
					$_SERVER['REQUEST_URI'] = trailingslashit($_SERVER['ESI_REFERER']);
				}
			}
			// Prevent from 301 redirecting
			if (!empty($_SERVER['SCRIPT_URI'])) {
				$SCRIPT_URI         = parse_url($_SERVER['SCRIPT_URI']);
				$SCRIPT_URI['path'] = $_SERVER['REQUEST_URI'];
				Utility::compatibility();
				$_SERVER['SCRIPT_URI'] = http_build_url($SCRIPT_URI);
			}
		}

if (!empty($_SERVER['ESI_CONTENT_TYPE']) && strpos($_SERVER['ESI_CONTENT_TYPE'], 'application/json') === 0) {
			add_filter('litespeed_is_json', '__return_true');
		}

/**
		 * Make REST call be able to parse ESI
		 * NOTE: Not effective due to ESI req are all to `/` yet
		 *
		 * @since 2.9.4
		 */
		add_action('rest_api_init', array( $this, 'load_esi_block' ), 101);

// Register ESI blocks
		add_action('litespeed_esi_load-widget', array( $this, 'load_widget_block' ));
		add_action('litespeed_esi_load-admin-bar', array( $this, 'load_admin_bar_block' ));
		add_action('litespeed_esi_load-comment-form', array( $this, 'load_comment_form_block' ));

add_action('litespeed_esi_load-nonce', array( $this, 'load_nonce_block' ));
		add_action('litespeed_esi_load-esi', array( $this, 'load_esi_shortcode' ));

add_action('litespeed_esi_load-' . self::COMBO, array( $this, 'load_combo' ));
	}

/**
	 * Hooked to the template_include action.
	 * Selects the esi template file when the post type is a LiteSpeed ESI page.
	 *
	 * @since 1.1.3
	 * @access public
	 * @param string $template The template path filtered.
	 * @return string The new template path.
	 */
	public function esi_template( $template ) {
		// Check if is an ESI request
		if (defined('LSCACHE_IS_ESI')) {
			self::debug('calling ESI template');

return LSCWP_DIR . 'tpl/esi.tpl.php';
		}
		self::debug('calling default template');
		$this->_register_not_esi_actions();
		return $template;
	}

/**
	 * Register all of the hooks related to the esi logic of the plugin.
	 * Specifically when the page is NOT an esi page.
	 *
	 * @since    1.1.3
	 * @access   private
	 */
	private function _register_not_esi_actions() {
		do_action('litespeed_tpl_normal');

if (!Control::is_cacheable()) {
			return;
		}

if (Router::is_ajax()) {
			return;
		}

add_filter('widget_display_callback', array( $this, 'sub_widget_block' ), 0, 3);

// Add admin_bar esi
		if (Router::is_logged_in()) {
			remove_action('wp_body_open', 'wp_admin_bar_render', 0); // Remove default Admin bar. Fix https://github.com/elementor/elementor/issues/25198
			remove_action('wp_footer', 'wp_admin_bar_render', 1000);
			add_action('wp_footer', array( $this, 'sub_admin_bar_block' ), 1000);
		}

// Add comment forum esi for logged-in user or commenter
		if (!Router::is_ajax() && Vary::has_vary()) {
			add_filter('comment_form_defaults', array( $this, 'register_comment_form_actions' ));
		}
	}

/**
	 * Set an ESI to be combine='sub'
	 *
	 * @since  3.4.2
	 */
	public static function combine( $block_id ) {
		if (!isset($_SERVER['X-LSCACHE']) || strpos($_SERVER['X-LSCACHE'], 'combine') === false) {
			return;
		}

if (in_array($block_id, self::$_combine_ids)) {
			return;
		}

self::$_combine_ids[] = $block_id;
	}

/**
	 * Load combined ESI
	 *
	 * @since  3.4.2
	 */
	public function load_combo() {
		Control::set_nocache('ESI combine request');

if (empty($_POST['esi_include'])) {
			return;
		}

self::set_has_esi();

self::debug('[ESI] 🍔 Load combo', $_POST['esi_include']);

$output = '';
		foreach ($_POST['esi_include'] as $url) {
			$qs = parse_url(htmlspecialchars_decode($url), PHP_URL_QUERY);
			parse_str($qs, $qs);
			if (empty($qs[self::QS_ACTION])) {
				continue;
			}
			$esi_id       = $qs[self::QS_ACTION];
			$esi_param    = !empty($qs[self::QS_PARAMS]) ? $this->_parse_esi_param($qs[self::QS_PARAMS]) : false;
			$inline_param = apply_filters('litespeed_esi_inline-' . $esi_id, array(), $esi_param); // Returned array need to be [ val, control, tag ]
			if ($inline_param) {
				$output .= self::_build_inline($url, $inline_param);
			}
		}

echo $output;
	}

/**
	 * Build a whole inline segment
	 *
	 * @since  3.4.2
	 */
	private static function _build_inline( $url, $inline_param ) {
		if (!$url || empty($inline_param['val']) || empty($inline_param['control']) || empty($inline_param['tag'])) {
			return '';
		}

$url     = esc_attr($url);
		$control = esc_attr($inline_param['control']);
		$tag     = esc_attr($inline_param['tag']);

return "<esi:inline name='$url' cache-control='" . $control . "' cache-tag='" . $tag . "'>" . $inline_param['val'] . '</esi:inline>';
	}

/**
	 * Build the esi url. This method will build the html comment wrapper as well as serialize and encode the parameter array.
	 *
	 * The block_id parameter should contain alphanumeric and '-_' only.
	 *
	 * @since 1.1.3
	 * @access private
	 * @param string $block_id     The id to use to display the correct esi block.
	 * @param string $wrapper      The wrapper for the esi comments.
	 * @param array  $params       The esi parameters.
	 * @param string $control      The cache control attribute if any.
	 * @param bool   $silence      If generate wrapper comment or not
	 * @param bool   $preserved    If this ESI block is used in any filter, need to temporarily convert it to a string to avoid the HTML tag being removed/filtered.
	 * @param bool   $svar         If store the value in memory or not, in memory will be faster
	 * @param array  $inline_param If show the current value for current request( this can avoid multiple esi requests in first time cache generating process )
	 */
	public function sub_esi_block(
		$block_id,
		$wrapper,
		$params = array(),
		$control = 'private,no-vary',
		$silence = false,
		$preserved = false,
		$svar = false,
		$inline_param = array()
	) {
		if (empty($block_id) || !is_array($params) || preg_match('/[^\w-]/', $block_id)) {
			return false;
		}

if (defined('LITESPEED_ESI_OFF')) {
			self::debug('[ESI] ESI OFF so force loading [block_id] ' . $block_id);
			do_action('litespeed_esi_load-' . $block_id, $params);
			return;
		}

if ($silence) {
			// Don't add comment to esi block ( original for nonce used in tag property data-nonce='esi_block' )
			$params['_ls_silence'] = true;
		}

if ($this->cls('REST')->is_rest() || $this->cls('REST')->is_internal_rest()) {
			$params['is_json'] = 1;
		}

$params  = apply_filters('litespeed_esi_params', $params, $block_id);
		$control = apply_filters('litespeed_esi_control', $control, $block_id);

if (!is_array($params) || !is_string($control)) {
			defined('LSCWP_LOG') && self::debug("[ESI] 🛑 Sub hooks returned Params: \n" . var_export($params, true) . "\ncache control: \n" . var_export($control, true));

return false;
		}

// Build params for URL
		$appended_params = array(
			self::QS_ACTION => $block_id,
		);
		if (!empty($control)) {
			$appended_params['_control'] = $control;
		}
		if ($params) {
			$appended_params[self::QS_PARAMS] = base64_encode(\json_encode($params));
			self::debug2('param ', $params);
		}

// Append hash
		$appended_params['_hash'] = $this->_gen_esi_md5($appended_params);

/**
		 * Escape potential chars
		 *
		 * @since 2.9.4
		 */
		$appended_params = array_map('urlencode', $appended_params);

// Generate ESI URL
		$url = add_query_arg($appended_params, trailingslashit(wp_make_link_relative(home_url())));

$output = '';
		if ($inline_param) {
			$output .= self::_build_inline($url, $inline_param);
		}

$output .= "<esi:include src='$url'";
		if (!empty($control)) {
			$control = esc_attr($control);
			$output .= " cache-control='$control'";
		}
		if ($svar) {
			$output .= " as-var='1'";
		}
		if (in_array($block_id, self::$_combine_ids)) {
			$output .= " combine='sub'";
		}
		if ($block_id == self::COMBO && isset($_SERVER['X-LSCACHE']) && strpos($_SERVER['X-LSCACHE'], 'combine') !== false) {
			$output .= " combine='main'";
		}
		$output .= ' />';

if (!$silence) {
			$output = "$output";
		}

self::debug("💕  [BLock_ID] $block_id \t[wrapper] $wrapper \t\t[Control] $control");
		self::debug2($output);

self::set_has_esi();

// Convert to string to avoid html chars filter when using
		// Will reverse the buffer when output in self::finalize()
		if ($preserved) {
			$hash                            = md5($output);
			$this->_esi_preserve_list[$hash] = $output;
			self::debug("Preserved to $hash");

return $hash;
		}

return $output;
	}

/**
	 * Generate ESI hash md5
	 *
	 * @since  2.9.6
	 * @access private
	 */
	private function _gen_esi_md5( $params ) {
		$keys = array( self::QS_ACTION, '_control', self::QS_PARAMS );

$str = '';
		foreach ($keys as $v) {
			if (isset($params[$v]) && is_string($params[$v])) {
				$str .= $params[$v];
			}
		}
		self::debug2('md5_string=' . $str);

return md5($this->conf(Base::HASH) . $str);
	}

/**
	 * Parses the request parameters on an ESI request
	 *
	 * @since 1.1.3
	 * @access private
	 */
	private function _parse_esi_param( $qs_params = false ) {
		$req_params = false;
		if ($qs_params) {
			$req_params = $qs_params;
		} elseif (isset($_REQUEST[self::QS_PARAMS])) {
			$req_params = $_REQUEST[self::QS_PARAMS];
		}

if (!$req_params) {
			return false;
		}

$unencrypted = base64_decode($req_params);
		if ($unencrypted === false) {
			return false;
		}

self::debug2('params', $unencrypted);
		// $unencoded = urldecode($unencrypted); no need to do this as $_GET is already parsed
		$params = \json_decode($unencrypted, true);

return $params;
	}

/**
	 * Select the correct esi output based on the parameters in an ESI request.
	 *
	 * @since 1.1.3
	 * @access public
	 */
	public function load_esi_block() {
		$params = $this->_parse_esi_param();

/**
		 * Silent ESI blocks (e.g. nonces, which are injected directly into inline
		 * JavaScript/JSON) must never emit the running-info HTML comment. Set the
		 * silence flag before the _hash validation below so that a failed or stale
		 * block degrades to an empty string instead of corrupting the inline JS it
		 * is embedded in.
		 *
		 * The params are only read here to decide comment suppression; the block
		 * itself is still not executed until the _hash validation passes.
		 */
		if (!empty($params['_ls_silence'])) {
			!defined('LSCACHE_ESI_SILENCE') && define('LSCACHE_ESI_SILENCE', true);
		}

/**
		 * Validate if is a legal ESI req
		 *
		 * @since 2.9.6
		 */
		if (empty($_GET['_hash']) || $this->_gen_esi_md5($_GET) != $_GET['_hash']) {
			self::debug('[ESI] ❌ Failed to validate _hash');
			return;
		}

if (defined('LSCWP_LOG')) {
			$logInfo = '[ESI] ⭕ ';
			if (!empty($params[self::PARAM_NAME])) {
				$logInfo .= ' Name: ' . $params[self::PARAM_NAME] . ' ----- ';
			}
			$logInfo .= ' [ID] ' . LSCACHE_IS_ESI;
			self::debug($logInfo);
		}

/**
		 * Buffer needs to be JSON format
		 *
		 * @since  2.9.4
		 */
		if (!empty($params['is_json'])) {
			add_filter('litespeed_is_json', '__return_true');
		}

Tag::add(rtrim(Tag::TYPE_ESI, '.'));
		Tag::add(Tag::TYPE_ESI . LSCACHE_IS_ESI);

// self::debug(var_export($params, true ));

/**
		 * Handle default cache control 'private,no-vary' for sub_esi_block()   @ticket #923505
		 *
		 * @since  2.2.3
		 */
		if (!empty($_GET['_control'])) {
			$control = explode(',', $_GET['_control']);
			if (in_array('private', $control)) {
				Control::set_private();
			}

if (in_array('no-vary', $control)) {
				Control::set_no_vary();
			}
		}

do_action('litespeed_esi_load-' . LSCACHE_IS_ESI, $params);
	}

// The *_sub_* functions are helpers for the sub_* functions.
	// The *_load_* functions are helpers for the load_* functions.

/**
	 * Loads the default options for default WordPress widgets.
	 *
	 * @since 1.1.3
	 * @access public
	 */
	public static function widget_default_options( $options, $widget ) {
		if (!is_array($options)) {
			return $options;
		}

$widget_name = get_class($widget);
		switch ($widget_name) {
			case 'WP_Widget_Recent_Posts':
			case 'WP_Widget_Recent_Comments':
            $options[self::WIDGET_O_ESIENABLE] = Base::VAL_OFF;
            $options[self::WIDGET_O_TTL]       = 86400;
				break;
			default:
				break;
		}
		return $options;
	}

/**
	 * Hooked to the widget_display_callback filter.
	 * If the admin configured the widget to display via esi, this function
	 * will set up the esi request and cancel the widget display.
	 *
	 * @since 1.1.3
	 * @access public
	 * @param array      $instance Parameter used to build the widget.
	 * @param \WP_Widget $widget The widget to build.
	 * @param array      $args Parameter used to build the widget.
	 * @return mixed Return false if display through esi, instance otherwise.
	 */
	public function sub_widget_block( $instance, $widget, $args ) {
		// #210407
		if (!is_array($instance)) {
			return $instance;
		}

$name = get_class($widget);
		if (!isset($instance[Base::OPTION_NAME])) {
			return $instance;
		}
		$options = $instance[Base::OPTION_NAME];
		if (!isset($options) || !$options[self::WIDGET_O_ESIENABLE]) {
			defined('LSCWP_LOG') && self::debug('ESI 0 ' . $name . ': ' . (!isset($options) ? 'not set' : 'set off'));

return $instance;
		}

$esi_private = $options[self::WIDGET_O_ESIENABLE] == Base::VAL_ON2 ? 'private,' : '';

$params = array(
			self::PARAM_NAME => $name,
			self::PARAM_ID => $widget->id,
			self::PARAM_INSTANCE => $instance,
			self::PARAM_ARGS => $args,
		);

echo $this->sub_esi_block('widget', 'widget ' . $name, $params, $esi_private . 'no-vary');

return false;
	}

/**
	 * Hooked to the wp_footer action.
	 * Sets up the ESI request for the admin bar.
	 *
	 * @access public
	 * @since 1.1.3
	 * @global type $wp_admin_bar
	 */
	public function sub_admin_bar_block() {
		global $wp_admin_bar;

if (!is_admin_bar_showing() || !is_object($wp_admin_bar)) {
			return;
		}

// To make each admin bar ESI request different for `Edit` button different link
		$params = array(
			'ref' => $_SERVER['REQUEST_URI'],
		);

echo $this->sub_esi_block('admin-bar', 'adminbar', $params);
	}

/**
	 * Parses the esi input parameters and generates the widget for esi display.
	 *
	 * @access public
	 * @since 1.1.3
	 * @global $wp_widget_factory
	 * @param array $params Input parameters needed to correctly display widget
	 */
	public function load_widget_block( $params ) {
		// global $wp_widget_factory;
		// $widget = $wp_widget_factory->widgets[ $params[ self::PARAM_NAME ] ];
		$option = $params[self::PARAM_INSTANCE];
		$option = $option[Base::OPTION_NAME];

// Since we only reach here via esi, safe to assume setting exists.
		$ttl = $option[self::WIDGET_O_TTL];
		defined('LSCWP_LOG') && self::debug('ESI widget render: name ' . $params[self::PARAM_NAME] . ', id ' . $params[self::PARAM_ID] . ', ttl ' . $ttl);
		if ($ttl == 0) {
			Control::set_nocache('ESI Widget time to live set to 0');
		} else {
			Control::set_custom_ttl($ttl);

if ($option[self::WIDGET_O_ESIENABLE] == Base::VAL_ON2) {
				Control::set_private();
			}
			Control::set_no_vary();
			Tag::add(Tag::TYPE_WIDGET . $params[self::PARAM_ID]);
		}
		the_widget($params[self::PARAM_NAME], $params[self::PARAM_INSTANCE], $params[self::PARAM_ARGS]);
	}

/**
	 * Generates the admin bar for esi display.
	 *
	 * @access public
	 * @since 1.1.3
	 */
	public function load_admin_bar_block( $params ) {
		global $wp_the_query;

if (!empty($params['ref'])) {
			$ref_qs = parse_url($params['ref'], PHP_URL_QUERY);
			if (!empty($ref_qs)) {
				parse_str($ref_qs, $ref_qs_arr);

if (!empty($ref_qs_arr)) {
					foreach ($ref_qs_arr as $k => $v) {
						$_GET[$k] = $v;
					}
				}
			}
		}

// Needed when permalink structure is "Plain"
		if (!isset($wp_the_query)) {
			wp();
		}

wp_admin_bar_render();
		if (!$this->conf(Base::O_ESI_CACHE_ADMBAR)) {
			Control::set_nocache('build-in set to not cacheable');
		} else {
			Control::set_private();
			Control::set_no_vary();
		}

defined('LSCWP_LOG') && self::debug('ESI: adminbar ref: ' . $_SERVER['REQUEST_URI']);
	}

/**
	 * Parses the esi input parameters and generates the comment form for esi display.
	 *
	 * @access public
	 * @since 1.1.3
	 * @param array $params Input parameters needed to correctly display comment form
	 */
	public function load_comment_form_block( $params ) {
		comment_form($params[self::PARAM_ARGS], $params[self::PARAM_ID]);

if (!$this->conf(Base::O_ESI_CACHE_COMMFORM)) {
			Control::set_nocache('build-in set to not cacheable');
		} else {
			// by default comment form is public
			if (Vary::has_vary()) {
				Control::set_private();
				Control::set_no_vary();
			}
		}
	}

/**
	 * Generate nonce for certain action
	 *
	 * @access public
	 * @since 2.6
	 */
	public function load_nonce_block( $params ) {
		$action = $params['action'];

self::debug('[ESI] load_nonce_block [action] ' . $action);

// Set the nonce block TTL to the current nonce tick length.
		Control::set_custom_ttl($this->_nonce_block_ttl($action));

if (Router::is_logged_in()) {
			Control::set_private();
		}

if (function_exists('wp_create_nonce_litespeed_esi')) {
			echo wp_create_nonce_litespeed_esi($action);
		} else {
			echo wp_create_nonce($action);
		}
	}

/**
	 * Gets the TTL for an ESI nonce block.
	 *
	 * WordPress nonces are based on ticks of nonce_life / 2. Respect the effective
	 * nonce lifetime for the specific action so ESI nonce fragments do not outlive
	 * shorter custom nonce windows.
	 *
	 * @access private
	 * @param mixed $action Action name or -1.
	 * @return int
	 */
	private function _nonce_block_ttl( $action ) {
		if ($this->_wp_nonce_tick_accepts_action()) {
			$lifespan = (int) apply_filters('nonce_life', DAY_IN_SECONDS, $action);
		} else {
			$lifespan = (int) apply_filters('nonce_life', DAY_IN_SECONDS);
		}

if ($lifespan <= 0) {
			$lifespan = DAY_IN_SECONDS;
		}

return max(1, (int) ceil($lifespan / 2));
	}

/**
	 * Checks whether wp_nonce_tick() supports the nonce action parameter.
	 *
	 * @access private
	 * @return bool
	 */
	private function _wp_nonce_tick_accepts_action() {
		static $wp_nonce_tick_accepts_action = null;

if (null === $wp_nonce_tick_accepts_action) {
			$reflection                   = new \ReflectionFunction('wp_nonce_tick');
			$wp_nonce_tick_accepts_action = $reflection->getNumberOfParameters() > 0;
		}

return $wp_nonce_tick_accepts_action;
	}

/**
	 * Show original shortcode
	 *
	 * @access public
	 * @since 2.8
	 */
	public function load_esi_shortcode( $params ) {
		if (isset($params['ttl'])) {
			if (!$params['ttl']) {
				Control::set_nocache('ESI shortcode att ttl=0');
			} else {
				Control::set_custom_ttl($params['ttl']);
			}
			unset($params['ttl']);
		}

// Replace to original shortcode
		$shortcode = $params[0];
		$atts_ori  = array();
		foreach ($params as $k => $v) {
			if ($k === 0) {
				continue;
			}

$atts_ori[] = is_string($k) ? "$k='" . addslashes($v) . "'" : $v;
		}

Tag::add(Tag::TYPE_ESI . "esi.$shortcode");

// Output original shortcode final content
		echo do_shortcode("[$shortcode " . implode(' ', $atts_ori) . ' ]');
	}

/**
	 * Hooked to the comment_form_defaults filter.
	 * Stores the default comment form settings.
	 * If sub_comment_form_block is triggered, the output buffer is cleared and an esi block is added. The remaining comment form is also buffered and cleared.
	 * Else there is no need to make the comment form ESI.
	 *
	 * @since 1.1.3
	 * @access public
	 */
	public function register_comment_form_actions( $defaults ) {
		$this->esi_args = $defaults;
		echo self::clean_wrapper_begin();
		add_filter('comment_form_submit_button', array( $this, 'sub_comment_form_btn' ), 1000, 2); // To save the params passed in
		add_action('comment_form', array( $this, 'sub_comment_form_block' ), 1000);
		return $defaults;
	}

/**
	 * Store the args passed in comment_form for the ESI comment param usage in `$this->sub_comment_form_block()`
	 *
	 * @since  3.4
	 * @access public
	 */
	public function sub_comment_form_btn( $unused, $args ) {
		if (empty($args) || empty($this->esi_args)) {
			self::debug('comment form args empty?');
			return $unused;
		}
		$esi_args = array();

// compare current args with default ones
		foreach ($args as $k => $v) {
			if (!isset($this->esi_args[$k])) {
				$esi_args[$k] = $v;
			} elseif (is_array($v)) {
				$diff = array_diff_assoc($v, $this->esi_args[$k]);
				if (!empty($diff)) {
					$esi_args[$k] = $diff;
				}
			} elseif ($v !== $this->esi_args[$k]) {
				$esi_args[$k] = $v;
			}
		}

$this->esi_args = $esi_args;

return $unused;
	}

/**
	 * Hooked to the comment_form_submit_button filter.
	 *
	 * This method will compare the used comment form args against the default args. The difference will be passed to the esi request.
	 *
	 * @access public
	 * @since 1.1.3
	 */
	public function sub_comment_form_block( $post_id ) {
		echo self::clean_wrapper_end();
		$params = array(
			self::PARAM_ID => $post_id,
			self::PARAM_ARGS => $this->esi_args,
		);

echo $this->sub_esi_block('comment-form', 'comment form', $params);
		echo self::clean_wrapper_begin();
		add_action('comment_form_after', array( $this, 'comment_form_sub_clean' ));
	}

/**
	 * Hooked to the comment_form_after action.
	 * Cleans up the remaining comment form output.
	 *
	 * @since 1.1.3
	 * @access public
	 */
	public function comment_form_sub_clean() {
		echo self::clean_wrapper_end();
	}

/**
	 * Display a to-be-removed HTML wrapper (begin tag).
	 *
	 * @since 1.4
	 * @since 7.9 Moved from GUI to ESI
	 * @access public
	 *
	 * @param int|false $counter Optional explicit wrapper id; auto-increment if false.
	 * @return string Wrapper begin HTML comment.
	 */
	public static function clean_wrapper_begin( $counter = false ) {
		if (false === $counter) {
			++self::$_clean_counter;
			$counter = self::$_clean_counter;
			self::debug('clean wrapper ' . $counter . ' begin');
		}
		return '';
	}

/**
	 * Display a to-be-removed HTML wrapper (end tag).
	 *
	 * @since 1.4
	 * @since 7.9 Moved from GUI to ESI.
	 * @access public
	 *
	 * @param int|false $counter Optional explicit wrapper id; use latest if false.
	 * @return string Wrapper end HTML comment.
	 */
	public static function clean_wrapper_end( $counter = false ) {
		if (false === $counter) {
			$counter = self::$_clean_counter;
			self::debug('clean wrapper ' . $counter . ' end');
		}
		return '';
	}

/**
	 * Strip wrapped default HTML that ESI replaced.
	 *
	 * MUST run before any optimizer hook: HTML minifier strips HTML comments, which would remove the wrapper markers themselves and leave the wrapped default HTML orphaned in the final output. Called unconditionally from Core::send_headers_force() so that NO_OPTM requests still get a clean buffer.
	 *
	 * @since 7.9
	 * @access public
	 *
	 * @param string $buffer HTML buffer.
	 * @return string Cleaned buffer.
	 */
	public function finalize_clean_wrapper( $buffer ) {
		if (self::$_clean_counter < 1) {
			self::debug2('clean wrapper bypassed by no counter');
			return $buffer;
		}

self::debug2('clean wrapper start, counter ' . self::$_clean_counter);

for ($i = 1; $i <= self::$_clean_counter; $i++) {
			// If miss beginning.
			$start = strpos($buffer, self::clean_wrapper_begin($i));
			if (false === $start) {
				$buffer = str_replace(self::clean_wrapper_end($i), '', $buffer);
				self::debug2("lost beginning wrapper $i");
				continue;
			}

// If miss end.
			$end_wrapper = self::clean_wrapper_end($i);
			$end         = strpos($buffer, $end_wrapper);
			if (false === $end) {
				$buffer = str_replace(self::clean_wrapper_begin($i), '', $buffer);
				self::debug2("lost ending wrapper $i");
				continue;
			}

// Now replace wrapped content.
			$buffer = substr_replace($buffer, '', $start, $end - $start + strlen($end_wrapper));
			self::debug2("cleaned wrapper $i");
		}

return $buffer;
	}

/**
	 * Replace preserved blocks
	 *
	 * @since  2.6
	 * @access public
	 */
	public function finalize( $buffer ) {
		// Prepend combo esi block
		if (self::$_combine_ids) {
			self::debug('[ESI] 🍔 Enabled combo');
			$esi_block = $this->sub_esi_block(self::COMBO, '__COMBINE_MAIN__', array(), 'no-cache', true);
			$buffer    = $esi_block . $buffer;
		}

// Bypass if no preserved list to be replaced
		if (!$this->_esi_preserve_list) {
			return $buffer;
		}

$keys = array_keys($this->_esi_preserve_list);

self::debug('[ESI] replacing preserved blocks', $keys);

$buffer = str_replace($keys, $this->_esi_preserve_list, $buffer);

return $buffer;
	}

/**
	 * Check if the content contains preserved list or not
	 *
	 * @since  3.3
	 */
	public function contain_preserve_esi( $content ) {
		$hit_list = array();
		foreach ($this->_esi_preserve_list as $k => $v) {
			if (strpos($content, '"' . $k . '"') !== false) {
				$hit_list[] = '"' . $k . '"';
			}
			if (strpos($content, "'" . $k . "'") !== false) {
				$hit_list[] = "'" . $k . "'";
			}
		}
		return $hit_list;
	}
}