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Edit File : htaccess.cls.php \| Size : 24.13 KB
<?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 ###'; const RW_PATTERN_RES = '/./[^/](responsive\|css\|js\|dynamic\|loader\|fonts)\.php'; /* * 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 image/avif 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[] = ''; } // 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])) { $webP_rule = 'RewriteRule .* - [E=Cache-Control:vary=%{ENV:LSCACHE_VARY_VALUE}+webp]'; $next_gen_format = 'webp'; if ($cfg[$id] == 2) { $next_gen_format = 'avif'; } $new_rules[] = self::MARKER_WEBP . self::MARKER_START; $new_rules[] = 'RewriteCond %{HTTP_ACCEPT} "image/' . $next_gen_format . '"'; $new_rules[] = $webP_rule; $new_rules[] = 'RewriteCond %{HTTP_USER_AGENT} iPhone.Version/(\d{2}).Safari'; $new_rules[] = 'RewriteCond %1 >13'; $new_rules[] = $webP_rule; $new_rules[] = 'RewriteCond %{HTTP_USER_AGENT} Firefox/([0-9]+)'; $new_rules[] = 'RewriteCond %1 >=65'; $new_rules[] = $webP_rule; $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); } } } Back

Edit File : htaccess.cls.php | Size : 24.13 KB

<?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 image/avif 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[] = '';
		}

// 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])) {
			$webP_rule       = 'RewriteRule .* - [E=Cache-Control:vary=%{ENV:LSCACHE_VARY_VALUE}+webp]';
			$next_gen_format = 'webp';
			if ($cfg[$id] == 2) {
				$next_gen_format = 'avif';
			}
			$new_rules[] = self::MARKER_WEBP . self::MARKER_START;
			$new_rules[] = 'RewriteCond %{HTTP_ACCEPT} "image/' . $next_gen_format . '"';
			$new_rules[] = $webP_rule;

$new_rules[] = 'RewriteCond %{HTTP_USER_AGENT} iPhone.*Version/(\d{2}).*Safari';
			$new_rules[] = 'RewriteCond %1 >13';
			$new_rules[] = $webP_rule;

$new_rules[] = 'RewriteCond %{HTTP_USER_AGENT} Firefox/([0-9]+)';
			$new_rules[] = 'RewriteCond %1 >=65';
			$new_rules[] = $webP_rule;
			$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);
		}
	}
}

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