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<?php
namespace LiteSpeed\Lib;
/**
* Update guest vary
*
* @since 4.1
*/
class Guest {
const CONF_FILE = '.litespeed_conf.dat';
const HASH = 'hash'; // Not set-able
const O_CACHE_LOGIN_COOKIE = 'cache-login_cookie';
const O_DEBUG = 'debug';
const O_DEBUG_IPS = 'debug-ips';
const O_UTIL_NO_HTTPS_VARY = 'util-no_https_vary';
const O_GUEST_UAS = 'guest_uas';
const O_GUEST_IPS = 'guest_ips';
private static $_ip;
private static $_vary_name = '_lscache_vary'; // this default vary cookie is used for logged in status check
private $_conf = false;
/**
* Construtor
*
* @since 4.1
*/
public function __construct() {
! defined( 'LSCWP_CONTENT_FOLDER' ) && define( 'LSCWP_CONTENT_FOLDER', dirname( dirname( dirname( __DIR__ ) ) ) );
// Load config
$this->_conf = file_get_contents( LSCWP_CONTENT_FOLDER . '/' . self::CONF_FILE );
if ( $this->_conf ) {
$this->_conf = json_decode( $this->_conf, true );
}
if ( ! empty( $this->_conf[ self::O_CACHE_LOGIN_COOKIE ] ) ) {
self::$_vary_name = $this->_conf[ self::O_CACHE_LOGIN_COOKIE ];
}
}
/**
* Update Guest vary
*
* @since 4.0
*/
public function update_guest_vary() {
// This process must not be cached
header( 'X-LiteSpeed-Cache-Control: no-cache' );
if ( $this->always_guest() ) {
echo '[]';
exit;
}
// If contains vary already, don't reload to avoid infinite loop when parent page having browser cache
if ( $this->_conf && self::has_vary() ) {
echo '[]';
exit;
}
// Send vary cookie
$vary = 'guest_mode:1';
if ( $this->_conf && empty( $this->_conf[ self::O_DEBUG ] ) ) {
$vary = md5( $this->_conf[ self::HASH ] . $vary );
}
$expire = time() + 2 * 86400;
$is_ssl = ! empty( $this->_conf[ self::O_UTIL_NO_HTTPS_VARY ] ) ? false : $this->is_ssl();
setcookie( self::$_vary_name, $vary, $expire, '/', false, $is_ssl, true );
// return json
echo json_encode( array( 'reload' => 'yes' ) );
exit;
}
/**
* WP's is_ssl() func
*
* @since 4.1
*/
private function is_ssl() {
if ( isset( $_SERVER['HTTPS'] ) ) {
if ( 'on' === strtolower( $_SERVER['HTTPS'] ) ) {
return true;
}
if ( '1' == $_SERVER['HTTPS'] ) {
return true;
}
} elseif ( isset( $_SERVER['SERVER_PORT'] ) && ( '443' == $_SERVER['SERVER_PORT'] ) ) {
return true;
}
return false;
}
/**
* Check if default vary has a value
*
* @since 1.1.3
* @access public
*/
public static function has_vary() {
if ( empty( $_COOKIE[ self::$_vary_name ] ) ) {
return false;
}
return $_COOKIE[ self::$_vary_name ];
}
/**
* Detect if is a guest visitor or not
*
* @since 4.0
*/
public function always_guest() {
if ( empty( $_SERVER[ 'HTTP_USER_AGENT' ] ) ) {
return false;
}
if ( $this->_conf[ self::O_GUEST_UAS ] ) {
$quoted_uas = array();
foreach ( $this->_conf[ self::O_GUEST_UAS ] as $v ) {
$quoted_uas[] = preg_quote( $v, '#' );
}
$match = preg_match( '#' . implode( '|', $quoted_uas ) . '#i', $_SERVER[ 'HTTP_USER_AGENT' ] );
if ( $match ) {
return true;
}
}
if ( $this->ip_access( $this->_conf[ self::O_GUEST_IPS ] ) ) {
return true;
}
return false;
}
/**
* Check if the ip is in the range
*
* @since 1.1.0
* @access public
*/
public function ip_access( $ip_list ) {
if ( ! $ip_list ) {
return false;
}
if ( ! isset( self::$_ip ) ) {
self::$_ip = self::get_ip();
}
// $uip = explode('.', $_ip);
// if(empty($uip) || count($uip) != 4) Return false;
// foreach($ip_list as $key => $ip) $ip_list[$key] = explode('.', trim($ip));
// foreach($ip_list as $key => $ip) {
// if(count($ip) != 4) continue;
// for($i = 0; $i <= 3; $i++) if($ip[$i] == '*') $ip_list[$key][$i] = $uip[$i];
// }
return in_array( self::$_ip, $ip_list );
}
/**
* Get client ip
*
* @since 1.1.0
* @since 1.6.5 changed to public
* @access public
* @return string
*/
public static function get_ip() {
$_ip = '';
if ( function_exists( 'apache_request_headers' ) ) {
$apache_headers = apache_request_headers();
$_ip = ! empty( $apache_headers['True-Client-IP'] ) ? $apache_headers['True-Client-IP'] : false;
if ( ! $_ip ) {
$_ip = ! empty( $apache_headers['X-Forwarded-For'] ) ? $apache_headers['X-Forwarded-For'] : false;
$_ip = explode( ',', $_ip );
$_ip = $_ip[ 0 ];
}
}
if ( ! $_ip ) {
$_ip = ! empty( $_SERVER['REMOTE_ADDR'] ) ? $_SERVER['REMOTE_ADDR'] : false;
}
return $_ip;
}
}