blacklister/index.php

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

    public function __construct() {
        @parent::__construct($this->host, $this->user, $this->pass, $this->db);
        if($this->connect_errno){
            die($this->connect_error);
        }
        $this->set_charset('utf8');
    }
}

class checkToken {
    use db;
    private $db = null;

    public function __construct() {
        $this->db = new db();
    }

    private function getRole($token) {
        $dbAction = $this->db->prepare("SELECT role FROM clients WHERE token = ?");
        $dbAction->bind_param('s',$token);
        $dbAction->execute();
        $dbAction->store_result();
        $dbAction->bind_result($role);
        $dbAction->fetch();
        if ($dbAction->num_rows() == 1){
            return $role;
        }
        return false;
    }

    public function isAdmin($token) {
        if($this->getRole($token) == 'admin') {
            return true;
        }
        return false;
    }

    public function isClient($token) {
        if($this->getRole($token) == 'client') {
            return true;
        }
        return false;
    }
}

class action {
    use db;

    public function __construct() {
        $this->db = new db();
    }

    private function isListed($ip) {
        $dbAction = $this->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;
    }

    private function deListCount($ip) {
        $dbAction = $this->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;
    }

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

    public function delist($ip) {
        if(!islisted($ip)) {
            return false;
        }
        //check delisting count
        if (delistCount($ip) > 3){
            echo "Fatal: ". $ip . " delisted to often!\n";
            return false;
        }
        //delist ip
        $dbAction = $this->db->prepare("DELETE FROM list WHERE ip = ?");
        $dbAction->bind_param('i',ip2long($ip));
        $dbAction->execute();
        //update delist count
        $dbAction = $this->db->prepare("INSERT INTO delist (ip) VALUES (?) ON DUPLICATE KEY UPDATE count = count + 1");
        $dbAction->bind_param('i',ip2long($ip));
        $dbAction->execute();
        return true;
    }
}
$ip = trim($_GET['ip']);
$token = trim($_GET['token']);
$action = trim($_GET['action']);

switch($action) {
    case 'delist':
        if((new action)->delist($ip)){
            echo "$ip delisted\n";
        } else {
            echo "$ip not delisted\n";
        };
        break;
    case 'blacklist':
        break;
    case 'whitelist':
        break;
    default:
        if ((new checkToken)->isClient($token)){
            if((new action)->set($ip)){
                echo " inserted " . $ip ."\n";
            } else {
                echo " fehler\n";
            };
        } else {
            echo "Client token " . $token . " not registered\n";
        };
}