golden hour

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

File/Folder	Size	Actions
activation.cls.php	14.99 KB
admin-display.cls.php	33.22 KB
admin-settings.cls.php	9.52 KB
admin.cls.php	4.44 KB
api.cls.php	11.08 KB
avatar.cls.php	6.06 KB
base.cls.php	30.23 KB
cdn	-
cdn-setup.cls.php	10.45 KB
cdn.cls.php	13.13 KB
cloud.cls.php	42.48 KB
conf.cls.php	18.58 KB
control.cls.php	21.75 KB
core.cls.php	20.05 KB
crawler-map.cls.php	14 KB
crawler.cls.php	34.69 KB
css.cls.php	13.1 KB
data.cls.php	17.41 KB
data.upgrade.func.php	21.37 KB
data_structure	-
db-optm.cls.php	9.58 KB
debug2.cls.php	13.1 KB
doc.cls.php	4.74 KB
error.cls.php	6.91 KB
esi.cls.php	26.91 KB
file.cls.php	10.13 KB
gui.cls.php	27.45 KB
health.cls.php	2.89 KB
htaccess.cls.php	23.95 KB
img-optm.cls.php	60.24 KB
import.cls.php	4.15 KB
instance.cls.php	154 B
lang.cls.php	15.47 KB
localization.cls.php	3.38 KB
media.cls.php	31.08 KB
metabox.cls.php	4.21 KB
object-cache.cls.php	15.92 KB
object.lib.php	33.97 KB
optimize.cls.php	36.67 KB
optimizer.cls.php	9.02 KB
placeholder.cls.php	14.15 KB
preset.cls.php	5.43 KB
purge.cls.php	29.79 KB
report.cls.php	5.33 KB
rest.cls.php	7.87 KB
root.cls.php	12.6 KB
router.cls.php	19.08 KB
str.cls.php	1.37 KB
tag.cls.php	8.62 KB
task.cls.php	5.83 KB
tool.cls.php	3.29 KB
ucss.cls.php	14.39 KB
utility.cls.php	20.63 KB
vary.cls.php	19.17 KB
vpi.cls.php	7.41 KB

Edit: htaccess.cls.php

<?php

/**
 * The htaccess rewrite rule operation class
 *
 *
 * @since      1.0.0
 * @package    LiteSpeed
 * @subpackage LiteSpeed/inc
 * @author     LiteSpeed Technologies <info@litespeedtech.com>
 */

namespace LiteSpeed;

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

class Htaccess extends Root
{
	private $frontend_htaccess = null;
	private $_default_frontend_htaccess = null;
	private $backend_htaccess = null;
	private $_default_backend_htaccess = null;
	private $theme_htaccess = null; // Not used yet
	private $frontend_htaccess_readable = false;
	private $frontend_htaccess_writable = false;
	private $backend_htaccess_readable = false;
	private $backend_htaccess_writable = false;
	private $theme_htaccess_readable = false;
	private $theme_htaccess_writable = false;
	private $__rewrite_on;

const LS_MODULE_START = '<IfModule LiteSpeed>';
	const EXPIRES_MODULE_START = '<IfModule mod_expires.c>';
	const LS_MODULE_END = '</IfModule>';
	const LS_MODULE_REWRITE_START = '<IfModule mod_rewrite.c>';
	const REWRITE_ON = 'RewriteEngine on';
	const LS_MODULE_DONOTEDIT = '## LITESPEED WP CACHE PLUGIN - Do not edit the contents of this block! ##';
	const MARKER = 'LSCACHE';
	const MARKER_NONLS = 'NON_LSCACHE';
	const MARKER_LOGIN_COOKIE = '### marker LOGIN COOKIE';
	const MARKER_ASYNC = '### marker ASYNC';
	const MARKER_CRAWLER = '### marker CRAWLER';
	const MARKER_MOBILE = '### marker MOBILE';
	const MARKER_NOCACHE_COOKIES = '### marker NOCACHE COOKIES';
	const MARKER_NOCACHE_USER_AGENTS = '### marker NOCACHE USER AGENTS';
	const MARKER_CACHE_RESOURCE = '### marker CACHE RESOURCE';
	const MARKER_BROWSER_CACHE = '### marker BROWSER CACHE';
	const MARKER_MINIFY = '### marker MINIFY';
	const MARKER_CORS = '### marker CORS';
	const MARKER_WEBP = '### marker WEBP';
	const MARKER_DROPQS = '### marker DROPQS';
	const MARKER_START = ' start ###';
	const MARKER_END = ' end ###';

/**
	 * Initialize the class and set its properties.
	 *
	 * @since    1.0.7
	 */
	public function __construct()
	{
		$this->_path_set();
		$this->_default_frontend_htaccess = $this->frontend_htaccess;
		$this->_default_backend_htaccess = $this->backend_htaccess;

$frontend_htaccess = defined('LITESPEED_CFG_HTACCESS') ? LITESPEED_CFG_HTACCESS : false;
		if ($frontend_htaccess && substr($frontend_htaccess, -10) === '/.htaccess') {
			$this->frontend_htaccess = $frontend_htaccess;
		}
		$backend_htaccess = defined('LITESPEED_CFG_HTACCESS_BACKEND') ? LITESPEED_CFG_HTACCESS_BACKEND : false;
		if ($backend_htaccess && substr($backend_htaccess, -10) === '/.htaccess') {
			$this->backend_htaccess = $backend_htaccess;
		}

// Filter for frontend&backend htaccess path
		$this->frontend_htaccess = apply_filters('litespeed_frontend_htaccess', $this->frontend_htaccess);
		$this->backend_htaccess = apply_filters('litespeed_backend_htaccess', $this->backend_htaccess);

clearstatcache();

// frontend .htaccess privilege
		$test_permissions = file_exists($this->frontend_htaccess) ? $this->frontend_htaccess : dirname($this->frontend_htaccess);
		if (is_readable($test_permissions)) {
			$this->frontend_htaccess_readable = true;
		}
		if (is_writable($test_permissions)) {
			$this->frontend_htaccess_writable = true;
		}

$this->__rewrite_on = array(
			self::REWRITE_ON,
			'CacheLookup on',
			'RewriteRule .* - [E=Cache-Control:no-autoflush]',
			'RewriteRule ' . preg_quote(LITESPEED_DATA_FOLDER) . '/debug/.*\.log$ - [F,L]',
			'RewriteRule ' . preg_quote(self::CONF_FILE) . ' - [F,L]',
		);

// backend .htaccess privilege
		if ($this->frontend_htaccess === $this->backend_htaccess) {
			$this->backend_htaccess_readable = $this->frontend_htaccess_readable;
			$this->backend_htaccess_writable = $this->frontend_htaccess_writable;
		} else {
			$test_permissions = file_exists($this->backend_htaccess) ? $this->backend_htaccess : dirname($this->backend_htaccess);
			if (is_readable($test_permissions)) {
				$this->backend_htaccess_readable = true;
			}
			if (is_writable($test_permissions)) {
				$this->backend_htaccess_writable = true;
			}
		}
	}

/**
	 * Get if htaccess file is readable
	 *
	 * @since 1.1.0
	 * @return string
	 */
	private function _readable($kind = 'frontend')
	{
		if ($kind === 'frontend') {
			return $this->frontend_htaccess_readable;
		}
		if ($kind === 'backend') {
			return $this->backend_htaccess_readable;
		}
	}

/**
	 * Get if htaccess file is writable
	 *
	 * @since 1.1.0
	 * @return string
	 */
	public function writable($kind = 'frontend')
	{
		if ($kind === 'frontend') {
			return $this->frontend_htaccess_writable;
		}
		if ($kind === 'backend') {
			return $this->backend_htaccess_writable;
		}
	}

/**
	 * Get frontend htaccess path
	 *
	 * @since 1.1.0
	 * @return string
	 */
	public static function get_frontend_htaccess($show_default = false)
	{
		if ($show_default) {
			return self::cls()->_default_frontend_htaccess;
		}
		return self::cls()->frontend_htaccess;
	}

/**
	 * Get backend htaccess path
	 *
	 * @since 1.1.0
	 * @return string
	 */
	public static function get_backend_htaccess($show_default = false)
	{
		if ($show_default) {
			return self::cls()->_default_backend_htaccess;
		}
		return self::cls()->backend_htaccess;
	}

/**
	 * Check to see if .htaccess exists starting at $start_path and going up directories until it hits DOCUMENT_ROOT.
	 *
	 * As dirname() strips the ending '/', paths passed in must exclude the final '/'
	 *
	 * @since 1.0.11
	 * @access private
	 */
	private function _htaccess_search($start_path)
	{
		while (!file_exists($start_path . '/.htaccess')) {
			if ($start_path === '/' || !$start_path) {
				return false;
			}

if (!empty($_SERVER['DOCUMENT_ROOT']) && wp_normalize_path($start_path) === wp_normalize_path($_SERVER['DOCUMENT_ROOT'])) {
				return false;
			}

if (dirname($start_path) === $start_path) {
				return false;
			}

$start_path = dirname($start_path);
		}

return $start_path;
	}

/**
	 * Set the path class variables.
	 *
	 * @since 1.0.11
	 * @access private
	 */
	private function _path_set()
	{
		$frontend = Router::frontend_path();
		$frontend_htaccess_search = $this->_htaccess_search($frontend); // The existing .htaccess path to be used for frontend .htaccess
		$this->frontend_htaccess = ($frontend_htaccess_search ?: $frontend) . '/.htaccess';

$backend = realpath(ABSPATH); // /home/user/public_html/backend/
		if ($frontend == $backend) {
			$this->backend_htaccess = $this->frontend_htaccess;
			return;
		}

// Backend is a different path
		$backend_htaccess_search = $this->_htaccess_search($backend);
		// Found affected .htaccess
		if ($backend_htaccess_search) {
			$this->backend_htaccess = $backend_htaccess_search . '/.htaccess';
			return;
		}

// Frontend path is the parent of backend path
		if (stripos($backend, $frontend . '/') === 0) {
			// backend use frontend htaccess
			$this->backend_htaccess = $this->frontend_htaccess;
			return;
		}

$this->backend_htaccess = $backend . '/.htaccess';
	}

/**
	 * Get corresponding htaccess path
	 *
	 * @since 1.1.0
	 * @param  string $kind Frontend or backend
	 * @return string       Path
	 */
	public function htaccess_path($kind = 'frontend')
	{
		switch ($kind) {
			case 'backend':
				$path = $this->backend_htaccess;
				break;

case 'frontend':
			default:
				$path = $this->frontend_htaccess;
				break;
		}
		return $path;
	}

/**
	 * Get the content of the rules file.
	 *
	 * NOTE: will throw error if failed
	 *
	 * @since 1.0.4
	 * @since  2.9 Used exception for failed reading
	 * @access public
	 */
	public function htaccess_read($kind = 'frontend')
	{
		$path = $this->htaccess_path($kind);

if (!$path || !file_exists($path)) {
			return "\n";
		}

if (!$this->_readable($kind)) {
			Error::t('HTA_R');
		}

$content = File::read($path);
		if ($content === false) {
			Error::t('HTA_GET');
		}

// Remove ^M characters.
		$content = str_ireplace("\x0D", '', $content);
		return $content;
	}

/**
	 * Try to backup the .htaccess file if we didn't save one before.
	 *
	 * NOTE: will throw error if failed
	 *
	 * @since 1.0.10
	 * @access private
	 */
	private function _htaccess_backup($kind = 'frontend')
	{
		$path = $this->htaccess_path($kind);

if (!file_exists($path)) {
			return;
		}

if (file_exists($path . '.bk')) {
			return;
		}

$res = copy($path, $path . '.bk');

// Failed to backup, abort
		if (!$res) {
			Error::t('HTA_BK');
		}
	}

/**
	 * Get mobile view rule from htaccess file
	 *
	 * NOTE: will throw error if failed
	 *
	 * @since 1.1.0
	 */
	public function current_mobile_agents()
	{
		$rules = $this->_get_rule_by(self::MARKER_MOBILE);
		if (!isset($rules[0])) {
			Error::t('HTA_DNF', self::MARKER_MOBILE);
		}

$rule = trim($rules[0]);
		// 'RewriteCond %{HTTP_USER_AGENT} ' . Utility::arr2regex( $cfg[ $id ], true ) . ' [NC]';
		$match = substr($rule, strlen('RewriteCond %{HTTP_USER_AGENT} '), -strlen(' [NC]'));

if (!$match) {
			Error::t('HTA_DNF', __('Mobile Agent Rules', 'litespeed-cache'));
		}

return $match;
	}

/**
	 * Parse rewrites rule from the .htaccess file.
	 *
	 * NOTE: will throw error if failed
	 *
	 * @since 1.1.0
	 * @access public
	 */
	public function current_login_cookie($kind = 'frontend')
	{
		$rule = $this->_get_rule_by(self::MARKER_LOGIN_COOKIE, $kind);

if (!$rule) {
			Error::t('HTA_DNF', self::MARKER_LOGIN_COOKIE);
		}

if (strpos($rule, 'RewriteRule .? - [E=') !== 0) {
			Error::t('HTA_LOGIN_COOKIE_INVALID');
		}

$rule_cookie = substr($rule, strlen('RewriteRule .? - [E='), -1);

if (LITESPEED_SERVER_TYPE === 'LITESPEED_SERVER_OLS') {
			$rule_cookie = trim($rule_cookie, '"');
		}

// Drop `Cache-Vary:`
		$rule_cookie = substr($rule_cookie, strlen('Cache-Vary:'));

return $rule_cookie;
	}

/**
	 * Get rewrite rules based on the marker
	 *
	 * @since  2.0
	 * @access private
	 */
	private function _get_rule_by($cond, $kind = 'frontend')
	{
		clearstatcache();
		$path = $this->htaccess_path($kind);
		if (!$this->_readable($kind)) {
			return false;
		}

$rules = File::extract_from_markers($path, self::MARKER);
		if (!in_array($cond . self::MARKER_START, $rules) || !in_array($cond . self::MARKER_END, $rules)) {
			return false;
		}

$key_start = array_search($cond . self::MARKER_START, $rules);
		$key_end = array_search($cond . self::MARKER_END, $rules);
		if ($key_start === false || $key_end === false) {
			return false;
		}

$results = array_slice($rules, $key_start + 1, $key_end - $key_start - 1);
		if (!$results) {
			return false;
		}

if (count($results) == 1) {
			return trim($results[0]);
		}

return array_filter($results);
	}

/**
	 * Generate browser cache rules
	 *
	 * @since  1.3
	 * @access private
	 * @return array Rules set
	 */
	private function _browser_cache_rules($cfg)
	{
		/**
		 * Add ttl setting
		 * @since 1.6.3
		 */
		$id = Base::O_CACHE_TTL_BROWSER;
		$ttl = $cfg[$id];
		$rules = array(
			self::EXPIRES_MODULE_START,
			// '<FilesMatch "\.(pdf|ico|svg|xml|jpg|jpeg|png|gif|webp|ogg|mp4|webm|js|css|woff|woff2|ttf|eot)(\.gz)?$">',
			'ExpiresActive on',
			'ExpiresByType application/pdf A' . $ttl,
			'ExpiresByType image/x-icon A' . $ttl,
			'ExpiresByType image/vnd.microsoft.icon A' . $ttl,
			'ExpiresByType image/svg+xml A' . $ttl,
			'',
			'ExpiresByType image/jpg A' . $ttl,
			'ExpiresByType image/jpeg A' . $ttl,
			'ExpiresByType image/png A' . $ttl,
			'ExpiresByType image/gif A' . $ttl,
			'ExpiresByType image/webp A' . $ttl,
			'',
			'ExpiresByType video/ogg A' . $ttl,
			'ExpiresByType audio/ogg A' . $ttl,
			'ExpiresByType video/mp4 A' . $ttl,
			'ExpiresByType video/webm A' . $ttl,
			'',
			'ExpiresByType text/css A' . $ttl,
			'ExpiresByType text/javascript A' . $ttl,
			'ExpiresByType application/javascript A' . $ttl,
			'ExpiresByType application/x-javascript A' . $ttl,
			'',
			'ExpiresByType application/x-font-ttf A' . $ttl,
			'ExpiresByType application/x-font-woff A' . $ttl,
			'ExpiresByType application/font-woff A' . $ttl,
			'ExpiresByType application/font-woff2 A' . $ttl,
			'ExpiresByType application/vnd.ms-fontobject A' . $ttl,
			'ExpiresByType font/ttf A' . $ttl,
			'ExpiresByType font/otf A' . $ttl,
			'ExpiresByType font/woff A' . $ttl,
			'ExpiresByType font/woff2 A' . $ttl,
			'',
			// '</FilesMatch>',
			self::LS_MODULE_END,
		);
		return $rules;
	}

/**
	 * Generate CORS rules for fonts
	 *
	 * @since  1.5
	 * @access private
	 * @return array Rules set
	 */
	private function _cors_rules()
	{
		return array(
			'<FilesMatch "\.(ttf|ttc|otf|eot|woff|woff2|font\.css)$">',
			'<IfModule mod_headers.c>',
			'Header set Access-Control-Allow-Origin "*"',
			'</IfModule>',
			'</FilesMatch>',
		);
	}

/**
	 * Generate rewrite rules based on settings
	 *
	 * @since  1.3
	 * @access private
	 * @param  array $cfg  The settings to be used for rewrite rule
	 * @return array      Rules array
	 */
	private function _generate_rules($cfg)
	{
		$new_rules = array();
		$new_rules_nonls = array();
		$new_rules_backend = array();
		$new_rules_backend_nonls = array();

# continual crawler
		// $id = Base::O_CRAWLER;
		// if (!empty($cfg[$id])) {
		$new_rules[] = self::MARKER_ASYNC . self::MARKER_START;
		$new_rules[] = 'RewriteCond %{REQUEST_URI} /wp-admin/admin-ajax\.php';
		$new_rules[] = 'RewriteCond %{QUERY_STRING} action=async_litespeed';
		$new_rules[] = 'RewriteRule .* - [E=noabort:1]';
		$new_rules[] = self::MARKER_ASYNC . self::MARKER_END;
		$new_rules[] = '';
		// }

// mobile agents
		$id = Base::O_CACHE_MOBILE_RULES;
		if ((!empty($cfg[Base::O_CACHE_MOBILE]) || !empty($cfg[Base::O_GUEST])) && !empty($cfg[$id])) {
			$new_rules[] = self::MARKER_MOBILE . self::MARKER_START;
			$new_rules[] = 'RewriteCond %{HTTP_USER_AGENT} ' . Utility::arr2regex($cfg[$id], true) . ' [NC]';
			$new_rules[] = 'RewriteRule .* - [E=Cache-Control:vary=%{ENV:LSCACHE_VARY_VALUE}+ismobile]';
			$new_rules[] = self::MARKER_MOBILE . self::MARKER_END;
			$new_rules[] = '';
		}

// nocache cookie
		$id = Base::O_CACHE_EXC_COOKIES;
		if (!empty($cfg[$id])) {
			$new_rules[] = self::MARKER_NOCACHE_COOKIES . self::MARKER_START;
			$new_rules[] = 'RewriteCond %{HTTP_COOKIE} ' . Utility::arr2regex($cfg[$id], true);
			$new_rules[] = 'RewriteRule .* - [E=Cache-Control:no-cache]';
			$new_rules[] = self::MARKER_NOCACHE_COOKIES . self::MARKER_END;
			$new_rules[] = '';
		}

// nocache user agents
		$id = Base::O_CACHE_EXC_USERAGENTS;
		if (!empty($cfg[$id])) {
			$new_rules[] = self::MARKER_NOCACHE_USER_AGENTS . self::MARKER_START;
			$new_rules[] = 'RewriteCond %{HTTP_USER_AGENT} ' . Utility::arr2regex($cfg[$id], true) . ' [NC]';
			$new_rules[] = 'RewriteRule .* - [E=Cache-Control:no-cache]';
			$new_rules[] = self::MARKER_NOCACHE_USER_AGENTS . self::MARKER_END;
			$new_rules[] = '';
		}

// caching php resource
		$id = Base::O_CACHE_RES;
		if (!empty($cfg[$id])) {
			$new_rules[] = $new_rules_backend[] = self::MARKER_CACHE_RESOURCE . self::MARKER_START;
			$new_rules[] = $new_rules_backend[] = 'RewriteRule ' . LSCWP_CONTENT_FOLDER . self::RW_PATTERN_RES . ' - [E=cache-control:max-age=3600]';
			$new_rules[] = $new_rules_backend[] = self::MARKER_CACHE_RESOURCE . self::MARKER_END;
			$new_rules[] = $new_rules_backend[] = '';
		}

// check login cookie
		$vary_cookies = $cfg[Base::O_CACHE_VARY_COOKIES];
		$id = Base::O_CACHE_LOGIN_COOKIE;
		if (!empty($cfg[$id])) {
			$vary_cookies[] = $cfg[$id];
		}
		if (LITESPEED_SERVER_TYPE === 'LITESPEED_SERVER_OLS') {
			// Need to keep this due to different behavior of OLS when handling response vary header @Sep/22/2018
			if (defined('COOKIEHASH')) {
				$vary_cookies[] = ',wp-postpass_' . COOKIEHASH;
			}
		}
		$vary_cookies = apply_filters('litespeed_vary_cookies', $vary_cookies); // todo: test if response vary header can work in latest OLS, drop the above two lines
		// frontend and backend
		if ($vary_cookies) {
			$env = 'Cache-Vary:' . implode(',', $vary_cookies);
			// if (LITESPEED_SERVER_TYPE === 'LITESPEED_SERVER_OLS') {
			// }
			$env = '"' . $env . '"';
			$new_rules[] = $new_rules_backend[] = self::MARKER_LOGIN_COOKIE . self::MARKER_START;
			$new_rules[] = $new_rules_backend[] = 'RewriteRule .? - [E=' . $env . ']';
			$new_rules[] = $new_rules_backend[] = self::MARKER_LOGIN_COOKIE . self::MARKER_END;
			$new_rules[] = '';
		}

// CORS font rules
		$id = Base::O_CDN;
		if (!empty($cfg[$id])) {
			$new_rules[] = self::MARKER_CORS . self::MARKER_START;
			$new_rules = array_merge($new_rules, $this->_cors_rules()); //todo: network
			$new_rules[] = self::MARKER_CORS . self::MARKER_END;
			$new_rules[] = '';
		}

// webp support
		$id = Base::O_IMG_OPTM_WEBP;
		if (!empty($cfg[$id]) || (!empty($cfg[Base::O_GUEST]) && !empty($cfg[Base::O_GUEST_OPTM]))) {
			$new_rules[] = self::MARKER_WEBP . self::MARKER_START;
			$new_rules[] = 'RewriteCond %{HTTP_ACCEPT} "image/webp"';
			$new_rules[] = 'RewriteRule .* - [E=Cache-Control:vary=%{ENV:LSCACHE_VARY_VALUE}+webp]';
			$new_rules[] = 'RewriteCond %{HTTP_USER_AGENT} iPhone.*Version/(\d{2}).*Safari';
			$new_rules[] = 'RewriteCond %1 >13';
			$new_rules[] = 'RewriteRule .* - [E=Cache-Control:vary=%{ENV:LSCACHE_VARY_VALUE}+webp]';
			$new_rules[] = self::MARKER_WEBP . self::MARKER_END;
			$new_rules[] = '';
		}

// drop qs support
		$id = Base::O_CACHE_DROP_QS;
		if (!empty($cfg[$id])) {
			$new_rules[] = self::MARKER_DROPQS . self::MARKER_START;
			foreach ($cfg[$id] as $v) {
				$new_rules[] = 'CacheKeyModify -qs:' . $v;
			}
			$new_rules[] = self::MARKER_DROPQS . self::MARKER_END;
			$new_rules[] = '';
		}

// Browser cache
		$id = Base::O_CACHE_BROWSER;
		if (!empty($cfg[$id])) {
			$new_rules_nonls[] = $new_rules_backend_nonls[] = self::MARKER_BROWSER_CACHE . self::MARKER_START;
			$new_rules_nonls = array_merge($new_rules_nonls, $this->_browser_cache_rules($cfg));
			$new_rules_backend_nonls = array_merge($new_rules_backend_nonls, $this->_browser_cache_rules($cfg));
			$new_rules_nonls[] = $new_rules_backend_nonls[] = self::MARKER_BROWSER_CACHE . self::MARKER_END;
			$new_rules_nonls[] = '';
		}

// Add module wrapper for LiteSpeed rules
		if ($new_rules) {
			$new_rules = $this->_wrap_ls_module($new_rules);
		}

if ($new_rules_backend) {
			$new_rules_backend = $this->_wrap_ls_module($new_rules_backend);
		}

return array($new_rules, $new_rules_backend, $new_rules_nonls, $new_rules_backend_nonls);
	}

/**
	 * Add LitSpeed module wrapper with rewrite on
	 *
	 * @since  2.1.1
	 * @access private
	 */
	private function _wrap_ls_module($rules = array())
	{
		return array_merge(array(self::LS_MODULE_START), $this->__rewrite_on, array(''), $rules, array(self::LS_MODULE_END));
	}

/**
	 * Insert LitSpeed module wrapper with rewrite on
	 *
	 * @since  2.1.1
	 * @access public
	 */
	public function insert_ls_wrapper()
	{
		$rules = $this->_wrap_ls_module();
		$this->_insert_wrapper($rules);
	}

/**
	 * wrap rules with module on info
	 *
	 * @since  1.1.5
	 * @param  array  $rules
	 * @return array        wrapped rules with module info
	 */
	private function _wrap_do_no_edit($rules)
	{
		// When to clear rules, don't need DONOTEDIT msg
		if ($rules === false || !is_array($rules)) {
			return $rules;
		}

$rules = array_merge(array(self::LS_MODULE_DONOTEDIT), $rules, array(self::LS_MODULE_DONOTEDIT));

return $rules;
	}

/**
	 * Write to htaccess with rules
	 *
	 * NOTE: will throw error if failed
	 *
	 * @since  1.1.0
	 * @access private
	 */
	private function _insert_wrapper($rules = array(), $kind = false, $marker = false)
	{
		if ($kind != 'backend') {
			$kind = 'frontend';
		}

// Default marker is LiteSpeed marker `LSCACHE`
		if ($marker === false) {
			$marker = self::MARKER;
		}

$this->_htaccess_backup($kind);

File::insert_with_markers($this->htaccess_path($kind), $this->_wrap_do_no_edit($rules), $marker, true);
	}

/**
	 * Update rewrite rules based on setting
	 *
	 * NOTE: will throw error if failed
	 *
	 * @since 1.3
	 * @access public
	 */
	public function update($cfg)
	{
		list($frontend_rules, $backend_rules, $frontend_rules_nonls, $backend_rules_nonls) = $this->_generate_rules($cfg);

// Check frontend content
		list($rules, $rules_nonls) = $this->_extract_rules();

// Check Non-LiteSpeed rules
		if ($this->_wrap_do_no_edit($frontend_rules_nonls) != $rules_nonls) {
			Debug2::debug('[Rules] Update non-ls frontend rules');
			// Need to update frontend htaccess
			try {
				$this->_insert_wrapper($frontend_rules_nonls, false, self::MARKER_NONLS);
			} catch (\Exception $e) {
				$manual_guide_codes = $this->_rewrite_codes_msg($this->frontend_htaccess, $frontend_rules_nonls, self::MARKER_NONLS);
				Debug2::debug('[Rules] Update Failed');
				throw new \Exception($manual_guide_codes);
			}
		}

// Check LiteSpeed rules
		if ($this->_wrap_do_no_edit($frontend_rules) != $rules) {
			Debug2::debug('[Rules] Update frontend rules');
			// Need to update frontend htaccess
			try {
				$this->_insert_wrapper($frontend_rules);
			} catch (\Exception $e) {
				Debug2::debug('[Rules] Update Failed');
				$manual_guide_codes = $this->_rewrite_codes_msg($this->frontend_htaccess, $frontend_rules);
				throw new \Exception($manual_guide_codes);
			}
		}

if ($this->frontend_htaccess !== $this->backend_htaccess) {
			list($rules, $rules_nonls) = $this->_extract_rules('backend');

// Check Non-LiteSpeed rules for backend
			if ($this->_wrap_do_no_edit($backend_rules_nonls) != $rules_nonls) {
				Debug2::debug('[Rules] Update non-ls backend rules');
				// Need to update frontend htaccess
				try {
					$this->_insert_wrapper($backend_rules_nonls, 'backend', self::MARKER_NONLS);
				} catch (\Exception $e) {
					Debug2::debug('[Rules] Update Failed');
					$manual_guide_codes = $this->_rewrite_codes_msg($this->backend_htaccess, $backend_rules_nonls, self::MARKER_NONLS);
					throw new \Exception($manual_guide_codes);
				}
			}

// Check backend content
			if ($this->_wrap_do_no_edit($backend_rules) != $rules) {
				Debug2::debug('[Rules] Update backend rules');
				// Need to update backend htaccess
				try {
					$this->_insert_wrapper($backend_rules, 'backend');
				} catch (\Exception $e) {
					Debug2::debug('[Rules] Update Failed');
					$manual_guide_codes = $this->_rewrite_codes_msg($this->backend_htaccess, $backend_rules);
					throw new \Exception($manual_guide_codes);
				}
			}
		}

return true;
	}

/**
	 * Get existing rewrite rules
	 *
	 * NOTE: will throw error if failed
	 *
	 * @since  1.3
	 * @access private
	 * @param  string $kind Frontend or backend .htaccess file
	 */
	private function _extract_rules($kind = 'frontend')
	{
		clearstatcache();
		$path = $this->htaccess_path($kind);
		if (!$this->_readable($kind)) {
			Error::t('E_HTA_R');
		}

$rules = File::extract_from_markers($path, self::MARKER);
		$rules_nonls = File::extract_from_markers($path, self::MARKER_NONLS);

return array($rules, $rules_nonls);
	}

/**
	 * Output the msg with rules plain data for manual insert
	 *
	 * @since  1.1.5
	 * @param  string  $file
	 * @param  array  $rules
	 * @return string        final msg to output
	 */
	private function _rewrite_codes_msg($file, $rules, $marker = false)
	{
		return sprintf(
			__('<p>Please add/replace the following codes into the beginning of %1$s:</p> %2$s', 'litespeed-cache'),
			$file,
			'<textarea style="width:100%;" rows="10" readonly>' . htmlspecialchars($this->_wrap_rules_with_marker($rules, $marker)) . '</textarea>'
		);
	}

/**
	 * Generate rules plain data for manual insert
	 *
	 * @since  1.1.5
	 */
	private function _wrap_rules_with_marker($rules, $marker = false)
	{
		// Default marker is LiteSpeed marker `LSCACHE`
		if ($marker === false) {
			$marker = self::MARKER;
		}

$start_marker = "# BEGIN {$marker}";
		$end_marker = "# END {$marker}";
		$new_file_data = implode("\n", array_merge(array($start_marker), $this->_wrap_do_no_edit($rules), array($end_marker)));

return $new_file_data;
	}

/**
	 * Clear the rules file of any changes added by the plugin specifically.
	 *
	 * @since 1.0.4
	 * @access public
	 */
	public function clear_rules()
	{
		$this->_insert_wrapper(false); // Use false to avoid do-not-edit msg
		// Clear non ls rules
		$this->_insert_wrapper(false, false, self::MARKER_NONLS);

if ($this->frontend_htaccess !== $this->backend_htaccess) {
			$this->_insert_wrapper(false, 'backend');
			$this->_insert_wrapper(false, 'backend', self::MARKER_NONLS);
		}
	}
}