sibtracker/system/modules/sitelogin.php

<?php
if( ! defined( 'DATALIFEENGINE' ) ) {die( "Hacking attempt!" );}

$_IP = $db->safesql( $_SERVER['REMOTE_ADDR'] );
$dle_login_hash = "";

//Завершение сеанса пользователя
if( isset( $_REQUEST['action'] ) and $_REQUEST['action'] == "logout" ) {
	$dle_user_id = "";
	$dle_password = "";
	set_cookie( "dle_user_id", "", 0 );
	set_cookie( "dle_name", "", 0 );
	set_cookie( "dle_password", "", 0 );
	set_cookie( "dle_skin", "", 0 );
	set_cookie( "dle_newpm", "", 0 );
	set_cookie( "dle_hash", "", 0 );
	set_cookie( session_name(), "", 0 );
    setcookie("dle_onl_session","", time() - 3600, "/", $domain);
	@session_destroy();
	@session_unset();
	$is_logged = 0;
	
    header( "Location: ".str_replace("index.php","",$_SERVER['PHP_SELF']) );
	die();
}

$is_logged = 0;
$member_id = array ();

if( isset( $_POST['login'] ) AND $_POST['login_name'] AND $_POST['login_password'] AND $_POST['login'] == "submit" ) {
    $_POST['login_name'] = $db->safesql( $_POST['login_name'] );
   	$_POST['login_password'] = @md5( $_POST['login_password'] );
	
    if ( !preg_match( "/[\||\'|\<|\>|\"|\!|\?|\$|\@|\/|\\\|\&\~\*\+]/", $_POST['login_name']) ) {
		
		$member_id = $db->super_query( "SELECT * FROM " . USERPREFIX . "_users where name='{$_POST['login_name']}' and password='" . md5( $_POST['login_password'] ) . "'" );
		
		if( $member_id['user_id'] ) {
			set_cookie( "dle_user_id", $member_id['user_id'], 365 );
			set_cookie( "dle_password", $_POST['login_password'], 365 );
			
			$_SESSION['dle_user_id'] = $member_id['user_id'];
			$_SESSION['dle_password'] = $_POST['login_password'];

            $dle_login_hash = md5( $_SERVER['HTTP_HOST'] . $member_id['user_id'] . sha1($_POST['login_password']) . $config['key'] . date( "Ymd" ) );
			
			if( $config['log_hash'] ) {
				
				$salt = "abchefghjkmnpqrstuvwxyz0123456789";
				$hash = '';
				srand( ( double ) microtime() * 1000000 );
				
				for($i = 0; $i < 9; $i ++) {
					$hash .= $salt{rand( 0, 33 )};
				}
				
				$hash = md5( $hash );
				
				$db->query( "UPDATE " . USERPREFIX . "_users set hash='" . $hash . "', lastdate='{$_TIME}', logged_ip='" . $_IP . "' WHERE user_id='{$member_id['user_id']}'" );
				
				set_cookie( "dle_hash", $hash, 365 );
				
				$_COOKIE['dle_hash'] = $hash;
				$member_id['hash'] = $hash;
			
			} else
				$db->query( "UPDATE LOW_PRIORITY " . USERPREFIX . "_users set lastdate='{$_TIME}', logged_ip='" . $_IP . "' WHERE user_id='{$member_id['user_id']}'" );
			
			$is_logged = TRUE;
		}
	}

} elseif( isset( $_SESSION['dle_user_id'] ) AND  intval( $_SESSION['dle_user_id'] ) > 0 AND $_SESSION['dle_password'] ) {
	
	$member_id = $db->super_query( "SELECT * FROM " . USERPREFIX . "_users WHERE user_id='" . intval( $_SESSION['dle_user_id'] ) . "'" );

    if( $member_id['user_id'] AND $member_id['password'] AND $member_id['password'] == md5( $_SESSION['dle_password'] ) ) {
		
		$is_logged = TRUE;
        $dle_login_hash = md5( $_SERVER['HTTP_HOST'] . $member_id['user_id'] . sha1($_SESSION['dle_password']) . $config['key'] . date( "Ymd" ) );
	
	} else {
		
		$member_id = array ();
		$is_logged = false;
	}

} elseif( isset( $_COOKIE['dle_user_id'] ) AND intval( $_COOKIE['dle_user_id'] ) > 0 AND $_COOKIE['dle_password']) {
	
	$member_id = $db->super_query( "SELECT * FROM " . USERPREFIX . "_users WHERE user_id='" . intval( $_COOKIE['dle_user_id'] ) . "'" );

    if( $member_id['user_id'] AND $member_id['password'] AND $member_id['password'] == md5( $_COOKIE['dle_password'] ) ) {
		
		$is_logged = TRUE;
        $dle_login_hash = md5( $_SERVER['HTTP_HOST'] . $member_id['user_id'] . sha1($_COOKIE['dle_password']) . $config['key'] . date( "Ymd" ) );
		
		$_SESSION['dle_user_id'] = $member_id['user_id'];
		$_SESSION['dle_password'] = $_COOKIE['dle_password'];
	
	} else {		
		$member_id = array ();
		$is_logged = false;
	
	}

    if( $config['log_hash'] and (($_COOKIE['dle_hash'] != $member_id['hash']) or ($member_id['hash'] == "")) ) {
  			$member_id = array ();
  			$is_logged = false;
  		}
}

if( isset( $_POST['login'] ) and ! $is_logged ) {msgbox( $lang['login_err'], $lang['login_err_1'] );}

//Пользователь авторизировался
if( $is_logged ) {
	if(!$_TIME) $_TIME = time() + ($config['date_adjust'] * 60);
	//Проверка на привязанность к IP	
	if( ! allowed_ip( $member_id['allowed_ip'] ) ) {
		$is_logged = 0;
		msgbox( $lang['login_err'], $lang['ip_block_login'] );
	}
	
	if( $config['ip_control'] == '2' and ! check_netz( $member_id['logged_ip'], $_IP ) and ! isset( $_POST['login'] ) ) $is_logged = 0;
	elseif( $config['ip_control'] == '1' and $user_group[$member_id['user_group']]['allow_admin'] and ! check_netz( $member_id['logged_ip'], $_IP ) and ! isset( $_POST['login'] ) ) $is_logged = 0;
}

//Не авторизированный пользователь
if( ! $is_logged ) {
	$member_id = array ();
	set_cookie( "dle_user_id", "", 0 );
	set_cookie( "dle_password", "", 0 );
	set_cookie( "dle_hash", "", 0 );
	$_SESSION['dle_user_id'] = 0;
	$_SESSION['dle_password'] = "";

	//Если не авторизирован, то группа пользователей 5(Гость)
	$member_id['user_group'] = 5;
}
?>