<?php
error_reporting(E_ALL);
class db extends mysqli {
    protected $host = 'localhost';
    protected $user = 'ban';
    protected $pass = 'Blubb123-';
    protected $db   = 'ban';

    public function __construct($host = 'localhost', $user = null, $pass = null, $db = null) {
        print_r($user);
        @parent::__construct($host, $user, $pass, $db);
        if($this->connect_errno){
            die($this->connect_error);
        }
    }
}
$ip = trim($_GET['ip']);
$token = trim($_GET['token']);
$action = trim($_GET['action']);
$db = new db();
$db->set_charset('utf8');

function checkToken($token,$db) {
    $dbAction = $db->prepare("SELECT description FROM clients WHERE token = ?");
    $dbAction->bind_param('s',$token);
    $dbAction->execute();
    $dbAction->store_result();
    $dbAction->bind_result($desc);
    $dbAction->fetch();
    if ($dbAction->num_rows() == 1){
        echo "Client " . $desc;
        return true;
    }
    return false;
}

function checkAdmin($token,$db) {
    $dbAction = $db->prepare("SELECT description FROM clients WHERE token = ?");
    $dbAction->bind_param('s',$token);
    $dbAction->execute();
    $dbAction->store_result();
    $dbAction->bind_result($desc);
    $dbAction->fetch();
    if ($dbAction->num_rows() == 1){
        if($desc == 'admin') {
            return true;
        }
    }
    return false;
}

function set($ip,$db) {
    $dbAction = $db->prepare("INSERT IGNORE INTO list VALUES (?)");
    $dbAction->bind_param('i',ip2long($ip));
    return $dbAction->execute();
}

function islisted($ip,$db) {
    $dbAction = $db->prepare("SELECT ip FROM list WHERE ip = ?");
    $dbAction->bind_param('i',ip2long($ip));
    $dbAction->execute();
    $dbAction->store_result();
    if($dbAction->num_rows() == 0) {
        return false;
    }
    return true;
}

function delistCount($ip,$db) {
    $dbAction = $db->prepare("SELECT count FROM delist WHERE ip = ?");
    $dbAction->bind_param('i',ip2long($ip));
    $dbAction->execute();
    $dbAction->store_result();
    $dbAction->bind_result($count);
    $dbAction->fetch();
    return $count;
}

function delist($ip,$db) {
    if(!islisted($ip,$db)) {
        return false;
    }
    //check delisting count
    if (delistCount($ip,$db) > 3){
        echo "Fatal: ". $ip . " delisted to often!\n";
        return false;
    }
    //delist ip
    $dbAction = $db->prepare("DELETE FROM list WHERE ip = ?");
    $dbAction->bind_param('i',ip2long($ip));
    $dbAction->execute();
    //update delist count
    $dbAction = $db->prepare("INSERT INTO delist (ip) VALUES (?) ON DUPLICATE KEY UPDATE count = count + 1");
    $dbAction->bind_param('i',ip2long($ip));
    $dbAction->execute();
    return true;
}
switch($action) {
    case 'delist':
        if(delist($ip,$db)){
            echo "$ip delisted\n";
        } else {
            echo "$ip not delisted\n";
        };
        break;
    case 'blacklist':
        break;
    case 'whitelist':
        break;
    default:
        if (checkToken($token,$db)){
            if(set($ip,$db)){
                echo " inserted " . $ip ."\n";
            } else {
                echo " fehler\n";
            };
        } else {
            echo "Client token " . $token . " not registered\n";
        };
}