<?php

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/**

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* The htaccess rewrite rule operation class

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*

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*

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* @since 1.0.0

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* @package LiteSpeed

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* @subpackage LiteSpeed/inc

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* @author LiteSpeed Technologies <info@litespeedtech.com>

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*/

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namespace LiteSpeed;

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

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class Htaccess extends Root

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{

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private $frontend_htaccess = null;

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private $_default_frontend_htaccess = null;

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private $backend_htaccess = null;

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private $_default_backend_htaccess = null;

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private $theme_htaccess = null; // Not used yet

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private $frontend_htaccess_readable = false;

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private $frontend_htaccess_writable = false;

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private $backend_htaccess_readable = false;

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private $backend_htaccess_writable = false;

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private $theme_htaccess_readable = false;

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private $theme_htaccess_writable = false;

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private $__rewrite_on;

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const LS_MODULE_START = '<IfModule LiteSpeed>';

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const EXPIRES_MODULE_START = '<IfModule mod_expires.c>';

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const LS_MODULE_END = '</IfModule>';

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const LS_MODULE_REWRITE_START = '<IfModule mod_rewrite.c>';

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const REWRITE_ON = 'RewriteEngine on';

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const LS_MODULE_DONOTEDIT = '## LITESPEED WP CACHE PLUGIN - Do not edit the contents of this block! ##';

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const MARKER = 'LSCACHE';

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const MARKER_NONLS = 'NON_LSCACHE';

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const MARKER_LOGIN_COOKIE = '### marker LOGIN COOKIE';

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const MARKER_ASYNC = '### marker ASYNC';

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const MARKER_CRAWLER = '### marker CRAWLER';

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const MARKER_MOBILE = '### marker MOBILE';

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const MARKER_NOCACHE_COOKIES = '### marker NOCACHE COOKIES';

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const MARKER_NOCACHE_USER_AGENTS = '### marker NOCACHE USER AGENTS';

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const MARKER_CACHE_RESOURCE = '### marker CACHE RESOURCE';

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const MARKER_BROWSER_CACHE = '### marker BROWSER CACHE';

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const MARKER_MINIFY = '### marker MINIFY';

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const MARKER_CORS = '### marker CORS';

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const MARKER_WEBP = '### marker WEBP';

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const MARKER_DROPQS = '### marker DROPQS';

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const MARKER_START = ' start ###';

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const MARKER_END = ' end ###';

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const RW_PATTERN_RES = '/.*/[^/]*(responsive|css|js|dynamic|loader|fonts)\.php';

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/**

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* Initialize the class and set its properties.

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*

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* @since 1.0.7

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*/

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public function __construct()

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{

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$this->_path_set();

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$this->_default_frontend_htaccess = $this->frontend_htaccess;

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$this->_default_backend_htaccess = $this->backend_htaccess;

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$frontend_htaccess = defined('LITESPEED_CFG_HTACCESS') ? LITESPEED_CFG_HTACCESS : false;

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if ($frontend_htaccess && substr($frontend_htaccess, -10) === '/.htaccess') {

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$this->frontend_htaccess = $frontend_htaccess;

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}

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$backend_htaccess = defined('LITESPEED_CFG_HTACCESS_BACKEND') ? LITESPEED_CFG_HTACCESS_BACKEND : false;

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if ($backend_htaccess && substr($backend_htaccess, -10) === '/.htaccess') {

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$this->backend_htaccess = $backend_htaccess;

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}

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// Filter for frontend&backend htaccess path

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$this->frontend_htaccess = apply_filters('litespeed_frontend_htaccess', $this->frontend_htaccess);

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$this->backend_htaccess = apply_filters('litespeed_backend_htaccess', $this->backend_htaccess);

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clearstatcache();

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// frontend .htaccess privilege

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$test_permissions = file_exists($this->frontend_htaccess) ? $this->frontend_htaccess : dirname($this->frontend_htaccess);

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if (is_readable($test_permissions)) {

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$this->frontend_htaccess_readable = true;

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}

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if (is_writable($test_permissions)) {

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$this->frontend_htaccess_writable = true;

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}

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$this->__rewrite_on = array(

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self::REWRITE_ON,

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'CacheLookup on',

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'RewriteRule .* - [E=Cache-Control:no-autoflush]',

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// "RewriteRule \.object-cache\.ini - [F,L]",

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'RewriteRule ' . preg_quote(self::CONF_FILE) . ' - [F,L]',

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);

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// backend .htaccess privilege

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if ($this->frontend_htaccess === $this->backend_htaccess) {

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$this->backend_htaccess_readable = $this->frontend_htaccess_readable;

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$this->backend_htaccess_writable = $this->frontend_htaccess_writable;

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} else {

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$test_permissions = file_exists($this->backend_htaccess) ? $this->backend_htaccess : dirname($this->backend_htaccess);

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if (is_readable($test_permissions)) {

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$this->backend_htaccess_readable = true;

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}

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if (is_writable($test_permissions)) {

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$this->backend_htaccess_writable = true;

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}

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}

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}

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/**

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* Get if htaccess file is readable

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*

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* @since 1.1.0

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* @return string

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*/

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private function _readable($kind = 'frontend')

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{

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if ($kind === 'frontend') {

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return $this->frontend_htaccess_readable;

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}

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if ($kind === 'backend') {

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return $this->backend_htaccess_readable;

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}

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}

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/**

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* Get if htaccess file is writable

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*

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* @since 1.1.0

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* @return string

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*/

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public function writable($kind = 'frontend')

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{

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if ($kind === 'frontend') {

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return $this->frontend_htaccess_writable;

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}

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if ($kind === 'backend') {

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return $this->backend_htaccess_writable;

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}

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}

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/**

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* Get frontend htaccess path

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*

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* @since 1.1.0

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* @return string

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*/

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public static function get_frontend_htaccess($show_default = false)

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{

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if ($show_default) {

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return self::cls()->_default_frontend_htaccess;

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}

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return self::cls()->frontend_htaccess;

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}

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/**

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* Get backend htaccess path

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*

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* @since 1.1.0

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* @return string

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*/

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public static function get_backend_htaccess($show_default = false)

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{

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if ($show_default) {

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return self::cls()->_default_backend_htaccess;

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}

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return self::cls()->backend_htaccess;

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}

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/**

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* Check to see if .htaccess exists starting at $start_path and going up directories until it hits DOCUMENT_ROOT.

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*

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* As dirname() strips the ending '/', paths passed in must exclude the final '/'

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*

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* @since 1.0.11

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* @access private

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*/

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private function _htaccess_search($start_path)

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{

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while (!file_exists($start_path . '/.htaccess')) {

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if ($start_path === '/' || !$start_path) {

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return false;

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}

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

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return false;

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}

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if (dirname($start_path) === $start_path) {

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return false;

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}

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$start_path = dirname($start_path);

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}

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return $start_path;

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}

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/**

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* Set the path class variables.

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*

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* @since 1.0.11

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* @access private

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*/

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private function _path_set()

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{

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$frontend = Router::frontend_path();

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$frontend_htaccess_search = $this->_htaccess_search($frontend); // The existing .htaccess path to be used for frontend .htaccess

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$this->frontend_htaccess = ($frontend_htaccess_search ?: $frontend) . '/.htaccess';

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$backend = realpath(ABSPATH); // /home/user/public_html/backend/

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if ($frontend == $backend) {

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$this->backend_htaccess = $this->frontend_htaccess;

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return;

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}

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// Backend is a different path

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$backend_htaccess_search = $this->_htaccess_search($backend);

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// Found affected .htaccess

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if ($backend_htaccess_search) {

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$this->backend_htaccess = $backend_htaccess_search . '/.htaccess';

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return;

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}

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// Frontend path is the parent of backend path

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if (stripos($backend, $frontend . '/') === 0) {

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// backend use frontend htaccess

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$this->backend_htaccess = $this->frontend_htaccess;

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return;

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}

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

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}

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/**

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* Get corresponding htaccess path

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*

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* @since 1.1.0

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* @param string $kind Frontend or backend

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* @return string Path

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*/

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public function htaccess_path($kind = 'frontend')

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{

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switch ($kind) {

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case 'backend':

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$path = $this->backend_htaccess;

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break;

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case 'frontend':

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default:

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$path = $this->frontend_htaccess;

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break;

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}

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return $path;

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}

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/**

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* Get the content of the rules file.

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*

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* NOTE: will throw error if failed

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*

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* @since 1.0.4

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* @since 2.9 Used exception for failed reading

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* @access public

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*/

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public function htaccess_read($kind = 'frontend')

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{

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$path = $this->htaccess_path($kind);

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if (!$path || !file_exists($path)) {

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return "\n";

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}

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if (!$this->_readable($kind)) {

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Error::t('HTA_R');

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}

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$content = File::read($path);

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if ($content === false) {

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Error::t('HTA_GET');

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}

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// Remove ^M characters.

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$content = str_ireplace("\x0D", '', $content);

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return $content;

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}

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/**

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* Try to backup the .htaccess file if we didn't save one before.

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*

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* NOTE: will throw error if failed

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*

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* @since 1.0.10

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* @access private

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*/

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private function _htaccess_backup($kind = 'frontend')

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{

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$path = $this->htaccess_path($kind);

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if (!file_exists($path)) {

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return;

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}

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if (file_exists($path . '.bk')) {

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return;

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}

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

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// Failed to backup, abort

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if (!$res) {

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Error::t('HTA_BK');

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}

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}

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/**

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* Get mobile view rule from htaccess file

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*

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* NOTE: will throw error if failed

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*

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* @since 1.1.0

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*/

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public function current_mobile_agents()

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{

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$rules = $this->_get_rule_by(self::MARKER_MOBILE);

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if (!isset($rules[0])) {

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Error::t('HTA_DNF', self::MARKER_MOBILE);

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}

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$rule = trim($rules[0]);

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// 'RewriteCond %{HTTP_USER_AGENT} ' . Utility::arr2regex( $cfg[ $id ], true ) . ' [NC]';

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$match = substr($rule, strlen('RewriteCond %{HTTP_USER_AGENT} '), -strlen(' [NC]'));

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if (!$match) {

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Error::t('HTA_DNF', __('Mobile Agent Rules', 'litespeed-cache'));

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}

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return $match;

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}

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/**

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* Parse rewrites rule from the .htaccess file.

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*

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* NOTE: will throw error if failed

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*

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* @since 1.1.0

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* @access public

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*/

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public function current_login_cookie($kind = 'frontend')

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{

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$rule = $this->_get_rule_by(self::MARKER_LOGIN_COOKIE, $kind);

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if (!$rule) {

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Error::t('HTA_DNF', self::MARKER_LOGIN_COOKIE);

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}

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if (strpos($rule, 'RewriteRule .? - [E=') !== 0) {

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Error::t('HTA_LOGIN_COOKIE_INVALID');

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}

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

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if (LITESPEED_SERVER_TYPE === 'LITESPEED_SERVER_OLS') {

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$rule_cookie = trim($rule_cookie, '"');

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}

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// Drop `Cache-Vary:`

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

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return $rule_cookie;

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}

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/**

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* Get rewrite rules based on the marker

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*

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* @since 2.0

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* @access private

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*/

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private function _get_rule_by($cond, $kind = 'frontend')

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{

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clearstatcache();

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$path = $this->htaccess_path($kind);

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if (!$this->_readable($kind)) {

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return false;

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}

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

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if (!in_array($cond . self::MARKER_START, $rules) || !in_array($cond . self::MARKER_END, $rules)) {

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return false;

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}

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$key_start = array_search($cond . self::MARKER_START, $rules);

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$key_end = array_search($cond . self::MARKER_END, $rules);

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if ($key_start === false || $key_end === false) {

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return false;

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}

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$results = array_slice($rules, $key_start + 1, $key_end - $key_start - 1);

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if (!$results) {

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return false;

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}

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if (count($results) == 1) {

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return trim($results[0]);

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}

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return array_filter($results);

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}

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/**

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* Generate browser cache rules

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*

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* @since 1.3

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* @access private

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* @return array Rules set

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*/

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private function _browser_cache_rules($cfg)

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{

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/**

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* Add ttl setting

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* @since 1.6.3

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*/

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$id = Base::O_CACHE_TTL_BROWSER;

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$ttl = $cfg[$id];

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$rules = array(

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self::EXPIRES_MODULE_START,

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// '<FilesMatch "\.(pdf|ico|svg|xml|jpg|jpeg|png|gif|webp|ogg|mp4|webm|js|css|woff|woff2|ttf|eot)(\.gz)?$">',

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'ExpiresActive on',

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'ExpiresByType application/pdf A' . $ttl,

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'ExpiresByType image/x-icon A' . $ttl,

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'ExpiresByType image/vnd.microsoft.icon A' . $ttl,

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'ExpiresByType image/svg+xml A' . $ttl,

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'',

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'ExpiresByType image/jpg A' . $ttl,

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'ExpiresByType image/jpeg A' . $ttl,

[439] Fix | Delete

'ExpiresByType image/png A' . $ttl,

[440] Fix | Delete

'ExpiresByType image/gif A' . $ttl,

[441] Fix | Delete

'ExpiresByType image/webp A' . $ttl,

[442] Fix | Delete

'',

[443] Fix | Delete

'ExpiresByType video/ogg A' . $ttl,

[444] Fix | Delete

'ExpiresByType audio/ogg A' . $ttl,

[445] Fix | Delete

'ExpiresByType video/mp4 A' . $ttl,

[446] Fix | Delete

'ExpiresByType video/webm A' . $ttl,

[447] Fix | Delete

'',

[448] Fix | Delete

'ExpiresByType text/css A' . $ttl,

[449] Fix | Delete

'ExpiresByType text/javascript A' . $ttl,

[450] Fix | Delete

'ExpiresByType application/javascript A' . $ttl,

[451] Fix | Delete

'ExpiresByType application/x-javascript A' . $ttl,

[452] Fix | Delete

'',

[453] Fix | Delete

'ExpiresByType application/x-font-ttf A' . $ttl,

[454] Fix | Delete

'ExpiresByType application/x-font-woff A' . $ttl,

[455] Fix | Delete

'ExpiresByType application/font-woff A' . $ttl,

[456] Fix | Delete

'ExpiresByType application/font-woff2 A' . $ttl,

[457] Fix | Delete

'ExpiresByType application/vnd.ms-fontobject A' . $ttl,

[458] Fix | Delete

'ExpiresByType font/ttf A' . $ttl,

[459] Fix | Delete

'ExpiresByType font/otf A' . $ttl,

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'ExpiresByType font/woff A' . $ttl,

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'ExpiresByType font/woff2 A' . $ttl,

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'',

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// '</FilesMatch>',

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self::LS_MODULE_END,

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);

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return $rules;

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}

[468] Fix | Delete

[469] Fix | Delete

/**

[470] Fix | Delete

* Generate CORS rules for fonts

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*

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* @since 1.5

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* @access private

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* @return array Rules set

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*/

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private function _cors_rules()

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{

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return array(

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'<FilesMatch "\.(ttf|ttc|otf|eot|woff|woff2|font\.css)$">',

[480] Fix | Delete

'<IfModule mod_headers.c>',

[481] Fix | Delete

'Header set Access-Control-Allow-Origin "*"',

[482] Fix | Delete

'</IfModule>',

[483] Fix | Delete

'</FilesMatch>',

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);

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}

[486] Fix | Delete

[487] Fix | Delete

/**

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* Generate rewrite rules based on settings

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*

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* @since 1.3

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* @access private

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* @param array $cfg The settings to be used for rewrite rule

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* @return array Rules array

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*/

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private function _generate_rules($cfg)

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{

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$new_rules = array();

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$new_rules_nonls = array();

[499] Fix | Delete