编写自己的WifiDog认证服务器

<?php  
include ‘./tool/MySQLHelper.php‘;  
if (!empty($_GET["mac"])){  
    $result = selectMacByToken($_GET["mac"]);  
    if (!empty($result)){  
        header("location: http://192.168.1.1:2060/wifidog/auth?token=".$result);  
    }  
    else {  
        header("location: http://xxxxx/WelcomePage.php?mac=".$_GET["mac"]);  
    }  
}  
else {  
    header("location: http://xxxxx/WelcomePage.php?mac=".$_GET["mac"]);  
}  
?>  

<?php  
echo "Pong";  
?>  

<?php  
// 后门  
if ($_GET["token"] == "123"){  
    echo "Auth: 1";  
    return;  
}  

if (!empty($_GET["token"]) && isset($_GET["token"])){  
    //获取$result的过程//  
    isValidate($result);  
    //**后续处理**//  
    return;  
}  
else if((!empty ($_GET["mac"])) && isset($_GET["mac"])){  
    //**获取result*//  
    $result = isSubscribeByMac($_GET["mac"]);  
    isValidate($result);  
    return;  
}  
else  
{  
    echo "Auth: 0";  
}  

// 输出是否合法.  
function isValidate($result){  
    if ($result == 1){  
        echo "Auth: 1";  
    }  
    else {  
        echo "Auth: 0";  
    }  
}  
?>