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<?php
/**
* Plugin Name: LiteSpeed Cache
* Plugin URI: https://www.litespeedtech.com/products/cache-plugins/wordpress-acceleration
* Description: High-performance page caching and site optimization from LiteSpeed
* Version: 7.4
* Author: LiteSpeed Technologies
* Author URI: https://www.litespeedtech.com
* License: GPLv3
* License URI: https://www.gnu.org/licenses/gpl-3.0.html
* Text Domain: litespeed-cache
* Domain Path: /lang
*
* @package LiteSpeed
*
* Copyright (C) 2015-2025 LiteSpeed Technologies, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
defined( 'WPINC' ) || exit();
if ( defined( 'LSCWP_V' ) ) {
return;
}
! defined( 'LSCWP_V' ) && define( 'LSCWP_V', '7.4' );
! defined( 'LSCWP_CONTENT_DIR' ) && define( 'LSCWP_CONTENT_DIR', WP_CONTENT_DIR );
! defined( 'LSCWP_DIR' ) && define( 'LSCWP_DIR', __DIR__ . '/' ); // Full absolute path '/var/www/html/***/wp-content/plugins/litespeed-cache/' or MU
! defined( 'LSCWP_BASENAME' ) && define( 'LSCWP_BASENAME', 'litespeed-cache/litespeed-cache.php' ); // LSCWP_BASENAME='litespeed-cache/litespeed-cache.php'
/**
* This needs to be before activation because admin-rules.class.php need const `LSCWP_CONTENT_FOLDER`
* This also needs to be before cfg.cls init because default cdn_included_dir needs `LSCWP_CONTENT_FOLDER`
*
* @since 5.2 Auto correct protocol for CONTENT URL
*/
$wp_content_url = WP_CONTENT_URL;
$site_url = site_url( '/' );
if ( 'http:' === substr( $wp_content_url, 0, 5 ) && 'https' === substr( $site_url, 0, 5 ) ) {
$wp_content_url = str_replace( 'http://', 'https://', $wp_content_url );
}
! defined( 'LSCWP_CONTENT_FOLDER' ) && define( 'LSCWP_CONTENT_FOLDER', str_replace( $site_url, '', $wp_content_url ) ); // `wp-content`
unset( $site_url );
! defined( 'LSWCP_PLUGIN_URL' ) && define( 'LSWCP_PLUGIN_URL', plugin_dir_url( __FILE__ ) ); // Full URL path '//example.com/wp-content/plugins/litespeed-cache/'
/**
* Static cache files consts
*
* @since 3.0
*/
! defined( 'LITESPEED_DATA_FOLDER' ) && define( 'LITESPEED_DATA_FOLDER', 'litespeed' );
! defined( 'LITESPEED_STATIC_URL' ) && define( 'LITESPEED_STATIC_URL', $wp_content_url . '/' . LITESPEED_DATA_FOLDER ); // Full static cache folder URL '//example.com/wp-content/litespeed'
unset( $wp_content_url );
! defined( 'LITESPEED_STATIC_DIR' ) && define( 'LITESPEED_STATIC_DIR', LSCWP_CONTENT_DIR . '/' . LITESPEED_DATA_FOLDER ); // Full static cache folder path '/var/www/html/***/wp-content/litespeed'
! defined( 'LITESPEED_TIME_OFFSET' ) && define( 'LITESPEED_TIME_OFFSET', get_option( 'gmt_offset' ) * 60 * 60 );
// Placeholder for lazyload img
! defined( 'LITESPEED_PLACEHOLDER' ) && define( 'LITESPEED_PLACEHOLDER', 'data:image/gif;base64,R0lGODdhAQABAPAAAMPDwwAAACwAAAAAAQABAAACAkQBADs=' );
// Auto register LiteSpeed classes
require_once LSCWP_DIR . 'autoload.php';
// Define CLI
if ( ( defined( 'WP_CLI' ) && WP_CLI ) || 'cli' === PHP_SAPI ) {
! defined( 'LITESPEED_CLI' ) && define( 'LITESPEED_CLI', true );
// Register CLI cmd
if ( method_exists( 'WP_CLI', 'add_command' ) ) {
WP_CLI::add_command( 'litespeed-option', 'LiteSpeed\CLI\Option' );
WP_CLI::add_command( 'litespeed-purge', 'LiteSpeed\CLI\Purge' );
WP_CLI::add_command( 'litespeed-online', 'LiteSpeed\CLI\Online' );
WP_CLI::add_command( 'litespeed-image', 'LiteSpeed\CLI\Image' );
WP_CLI::add_command( 'litespeed-debug', 'LiteSpeed\CLI\Debug' );
WP_CLI::add_command( 'litespeed-presets', 'LiteSpeed\CLI\Presets' );
WP_CLI::add_command( 'litespeed-crawler', 'LiteSpeed\CLI\Crawler' );
WP_CLI::add_command( 'litespeed-database', 'LiteSpeed\CLI\Database' );
}
}
// Server type
if ( ! defined( 'LITESPEED_SERVER_TYPE' ) ) {
$http_x_lscache = isset( $_SERVER['HTTP_X_LSCACHE'] ) ? sanitize_text_field( wp_unslash( $_SERVER['HTTP_X_LSCACHE'] ) ) : '';
$lsws_edition = isset( $_SERVER['LSWS_EDITION'] ) ? sanitize_text_field( wp_unslash( $_SERVER['LSWS_EDITION'] ) ) : '';
$server_software = isset( $_SERVER['SERVER_SOFTWARE'] ) ? sanitize_text_field( wp_unslash( $_SERVER['SERVER_SOFTWARE'] ) ) : '';
if ( $http_x_lscache ) {
define( 'LITESPEED_SERVER_TYPE', 'LITESPEED_SERVER_ADC' );
} elseif ( 0 === strpos( $lsws_edition, 'Openlitespeed' ) ) {
define( 'LITESPEED_SERVER_TYPE', 'LITESPEED_SERVER_OLS' );
} elseif ( 'LiteSpeed' === $server_software ) {
define( 'LITESPEED_SERVER_TYPE', 'LITESPEED_SERVER_ENT' );
} else {
define( 'LITESPEED_SERVER_TYPE', 'NONE' );
}
}
// Checks if caching is allowed via server variable
if ( ! empty( $_SERVER['X-LSCACHE'] ) || 'LITESPEED_SERVER_ADC' === LITESPEED_SERVER_TYPE || defined( 'LITESPEED_CLI' ) ) {
! defined( 'LITESPEED_ALLOWED' ) && define( 'LITESPEED_ALLOWED', true );
}
// ESI const definition
if ( ! defined( 'LSWCP_ESI_SUPPORT' ) ) {
define( 'LSWCP_ESI_SUPPORT', LITESPEED_SERVER_TYPE !== 'LITESPEED_SERVER_OLS' );
}
if ( ! defined( 'LSWCP_TAG_PREFIX' ) ) {
define( 'LSWCP_TAG_PREFIX', substr( md5( LSCWP_DIR ), -3 ) );
}
if ( ! function_exists( 'litespeed_exception_handler' ) ) {
/**
* Handle exception
*
* @param int $errno Error number.
* @param string $errstr Error string.
* @param string $errfile Error file.
* @param int $errline Error line.
* @throws \ErrorException When an error is encountered.
*/
function litespeed_exception_handler( $errno, $errstr, $errfile, $errline ) {
throw new \ErrorException(
esc_html( $errstr ),
0,
absint( $errno ),
esc_html( $errfile ),
absint( $errline )
);
}
}
if ( ! function_exists( 'litespeed_define_nonce_func' ) ) {
/**
* Overwrite the WP nonce funcs outside of LiteSpeed namespace
*
* @since 3.0
*/
function litespeed_define_nonce_func() {
/**
* If the nonce is in none_actions filter, convert it to ESI
*
* @param mixed $action Action name or -1.
* @return string
*/
function wp_create_nonce( $action = -1 ) {
if ( ! defined( 'LITESPEED_DISABLE_ALL' ) || ! LITESPEED_DISABLE_ALL ) {
$control = \LiteSpeed\ESI::cls()->is_nonce_action( $action );
if ( null !== $control ) {
$params = array(
'action' => $action,
);
return \LiteSpeed\ESI::cls()->sub_esi_block( 'nonce', 'wp_create_nonce ' . $action, $params, $control, true, true, true );
}
}
return wp_create_nonce_litespeed_esi( $action );
}
/**
* Ori WP wp_create_nonce
*
* @param mixed $action Action name or -1.
* @return string
*/
function wp_create_nonce_litespeed_esi( $action = -1 ) {
$uid = get_current_user_id();
if ( ! $uid ) {
/** This filter is documented in wp-includes/pluggable.php */
$uid = apply_filters( 'nonce_user_logged_out', $uid, $action );
}
$token = wp_get_session_token();
$i = wp_nonce_tick();
return substr( wp_hash( $i . '|' . $action . '|' . $uid . '|' . $token, 'nonce' ), -12, 10 );
}
}
}
if ( ! function_exists( 'run_litespeed_cache' ) ) {
/**
* Begins execution of the plugin.
*
* @since 1.0.0
*/
function run_litespeed_cache() {
// Check minimum PHP requirements, which is 7.2 at the moment.
if ( version_compare( PHP_VERSION, '7.2.0', '<' ) ) {
return;
}
// Check minimum WP requirements, which is 5.3 at the moment.
if ( version_compare( $GLOBALS['wp_version'], '5.3', '<' ) ) {
return;
}
\LiteSpeed\Core::cls();
}
run_litespeed_cache();
}