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<?php
class CLIENT
{
const UTYPE = 'LSWS' ;
private $id = '' ;
private $id_field = "lsws_uid" ;
private $pass = '' ;
private $pass_field = "lsws_pass" ;
private $secret = null ;
private $token = '' ;
private $timeout = 0 ;
private $valid = false ;
private $changed = false ;
//limit array size per stat..
private $stat_limit = 60 ;
private static $_instance = null ;
// prevent an object from being constructed
private function __construct()
{
}
public static function singleton()
{
if ( ! isset(self::$_instance) ) {
$c = __CLASS__ ;
self::$_instance = new $c ;
self::$_instance->init() ;
}
return self::$_instance ;
}
public function getToken()
{
return $this->token ;
}
public function hasChanged()
{
return $this->changed ;
}
public function setChanged($changed=true)
{
$this->changed = $changed;
}
public function init()
{
session_name(self::UTYPE . 'WEBUI') ; // to prevent conflicts with other app sessions
session_start() ;
if ( ! array_key_exists('secret', $_SESSION) ) {
$_SESSION['secret'] = 'litespeedrocks' ;
}
if ( ! array_key_exists('changed', $_SESSION) ) {
$_SESSION['changed'] = false ;
}
if ( ! array_key_exists('valid', $_SESSION) ) {
$_SESSION['valid'] = false ;
}
if ( ! array_key_exists('timeout', $_SESSION) ) {
$_SESSION['timeout'] = 0 ;
}
if ( ! array_key_exists('token', $_SESSION) ) {
$_SESSION['token'] = microtime() ;
}
$this->valid = &$_SESSION['valid'] ;
$this->changed = &$_SESSION['changed'] ;
$this->secret = &$_SESSION['secret'] ;
$this->timeout = &$_SESSION['timeout'] ;
$this->token = $_SESSION['token'] ;
if ( $this->valid == true ) {
if ( array_key_exists('lastaccess', $_SESSION) ) {
if ( $this->timeout > 0 && time() - $_SESSION['lastaccess'] > $this->timeout ) {
$this->clear() ;
header("location:/login.php?timedout=1") ;
die() ;
}
$this->id = DUtil::grab_input('cookie', $this->id_field) ;
$this->pass = DUtil::grab_input('cookie', $this->pass_field) ;
}
$this->updateAccessTime() ;
}
}
public function isValid()
{
if ($this->valid !== true) {
return false;
}
// otherwise enforce referrer exists
if (!isset($_SERVER['HTTP_REFERER'])) {
return false;
}
if (strpos($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST']) === false) {
return false;
}
return true;
}
public function store( $uid, $pass )
{
$domain = $_SERVER['HTTP_HOST'];
if ($pos = strpos($domain, ':')) {
$domain = substr($domain, 0, $pos);
}
$secure = !empty($_SERVER['HTTPS']);
$httponly = true;
setcookie($this->id_field, $uid, 0, '/', $domain, $secure, $httponly) ;
setcookie($this->pass_field, $pass, 0, '/', $domain, $secure, $httponly) ;
$this->updateAccessTime() ;
$this->valid = true ;
}
public function getIdData()
{
return array('id' => $this->id, 'pass' => $this->pass,
'sec0' => $this->secret[0], 'sec1' => $this->secret[1]);
}
public function setSecret( $secret )
{
$this->secret = $secret ;
}
public function getTimeout()
{
return $this->timeout ;
}
public function setTimeout( $timeout )
{
$this->timeout = (int) $timeout ;
}
public function updateAccessTime()
{
$_SESSION['lastaccess'] = time() ;
}
public function clear()
{
$this->valid = false ;
session_destroy() ;
session_unset() ;
$outdated = time() - 3600 * 24 * 30 ;
setcookie($this->id_field, '', $outdated, "/") ;
setcookie($this->pass_field, '', $outdated, "/") ;
setcookie(session_name(), '', $outdated, "/") ;
}
private function authuser( $authUser, $authPass )
{
$auth = false ;
$authUser1 = escapeshellcmd($authUser);
if (($authUser === $authUser1)
&& !preg_match('/[:\/]/', $authUser)
&& strlen($authUser) && strlen($authPass) ) {
$filename = DUtil::grab_input("server", "LS_SERVER_ROOT") . 'admin/conf/htpasswd' ;
$fd = fopen($filename, 'r') ;
if ( ! $fd ) {
return false ;
}
$all = trim(fread($fd, filesize($filename))) ;
fclose($fd) ;
$lines = explode("\n", $all) ;
foreach ( $lines as $line ) {
list($user, $hash) = explode(':', $line) ;
if ( $user == $authUser ) {
$encypt = crypt($authPass, $hash) ;
if ( $hash == $encypt ) {
$auth = true ;
break ;
}
}
}
}
return $auth ;
}
public function authenticate( $authUser, $authPass )
{
$auth = $this->authuser($authUser, $authPass);
if ( ! $auth ) {
$this->emailNotify(escapeshellcmd($authUser));
}
return $auth ;
}
public function reauthenticate()
{
$uid = PMA_blowfish_decrypt( $this->id, $this->secret[0]);
$password = PMA_blowfish_decrypt( $this->pass, $this->secret[1]);
if (!$this->authuser($uid, $password)) {
$this->clear() ;
header("location:/login.php?timedout=2") ;
die() ;
}
}
protected function emailNotify($userid)
{
// log in error log
$ip = $_SERVER["REMOTE_ADDR"];
$uri = $_SERVER['SCRIPT_URI'];
error_log("[WebAdmin Console] Failed Login Attempt - username: $userid ip: $ip url: $uri\n");
// email notice
$confcenter = ConfCenter::singleton();
$emails = $confcenter->GetAdminEmails();
if ($emails != '') {
$date = date("F j, Y, g:i a");
$subject = 'LiteSpeed Web Server Admin Console Failed Login Attempt';
$contents = "A recent login attempt to LiteSpeed Web Server WebAdmin console failed. Details of the attempt are below.\n
Date/Time: $date
Username: $userid
IP Address: $ip
URL: $uri
If you do not recognize the IP address, please follow below recommended ways to secure your admin console:
1. set access allowed list to limit certain IP that can access under WebConsole->Admin->Security tab;
2. change the listener port from default value 7080;
3. do not use simple password;
4. use a real SSL certificate for admin console to replace the default self-signed one.
";
$result = mail($emails, $subject, $contents);
}
}
//persistent stats
public function &getStat( $key )
{
$key = "stat_$key" ;
if ( isset($_SESSION[$key]) ) {
return $_SESSION[$key] ;
}
else {
$temp = null ;
return $temp ;
}
}
public function addStat( $key, &$data )
{
$result = &$this->getStat($key) ;
$sess_key = "stat_$key" ;
$sess_keylock = "{$key}_lock_" ;
if ( $result != null ) {
$curtime = time() ;
$time_span = $curtime - $_SESSION[$sess_keylock] ;
if ( isset($_SESSION[$sess_keylock]) ) {
if ( $time_span <= 1 ) {
//multiple stats windows open...check locks
echo("multiple stats windows open\n") ;
return false ;
}
elseif ( $time_span > 70 ) {
//data is stale
$_SESSION[$sess_key] = null ;
echo ("data is stale\n") ;
return false ;
}
}
//incoming data's column set does not match that of store data
if ( count($data) != count($result) ) {
echo("incoming data's column set does not match that of the stored data.\n") ;
return false ;
}
//max item 30 reached...shorten array by 1 from head
if ( count($result[0]) >= $this->stat_limit ) {
foreach ( $result as $index => $set ) {
while ( count($result[$index]) >= $this->stat_limit ) {
array_shift($result[$index]) ;
}
}
}
//add data
foreach ( $result as $index => $set ) {
$result[$index][] = $data[$index] ;
}
$_SESSION[$sess_keylock] = $curtime ;
return true ;
}
else {
$result = [] ;
//init data
foreach ( $data as $index => $value ) {
$result[$index] = [] ;
$result[$index][] = $value ;
}
$_SESSION[$sess_key] = &$result ;
$_SESSION[$sess_keylock] = $curtime ;
return true ;
}
}
}