XAseco Plugin to Sync Blacklist files across multiple gameservers

plugin.sync_servers.php

<?php
/* vim: set noexpandtab tabstop=2 softtabstop=2 shiftwidth=2: */

/**
 * Sync servers plugin.
 * Synchronizes black lists accross servers upon each round.
 * Created by Bueddl
 *
 * Dependencies: none
 */

Aseco::registerEvent('onPlayerConnect', 'ss_handle_player_connect');

class ss_plugin_status
{
  private static $_instance = null;

  private $_aseco;

  private $_checksum = null;

  private $_filename = 'blacklist.txt';

  public function __construct($aseco)
  {
    $this->_aseco = $aseco;
  }

  public function hasChecksum()
  {
    return !is_null($this->_checksum);
  }

  public function getChecksum()
  {
    return $this->_checksum;
  }

  public function setChecksum($checksum)
  {
    $this->_checksum = $checksum;
  }

  public function reloadBlacklist()
  {
    $filepath = '/var/gameserver/data/app/TrackmaniaForever/GameData/Config/' . $this->_filename;
    $checksum = md5_file($filepath);
    if ($this->hasChecksum() && $checksum == $this->getChecksum())
      return false;

    $this->log('Blacklist outdated, reloading (md5=' . $checksum . ')');
    $this->_aseco->client->query('LoadBlackList', $this->_filename);
    $this->setChecksum($checksum);
    return true;
  }

  public function isPlayerBlacklisted($player)
  {
    for ($idx = 0; ; $idx += 300)
    {
      $this->_aseco->client->query('GetBlackList', 300, $idx);
      $players = $this->_aseco->client->getResponse();
      foreach ($players as $entry)
      {
        if ($entry['Login'] == $player->login)
          return true;
      }

      if (count($players) < 300)
        break;
    }

    return false;
  }

  private function log($message)
  {
    $this->_aseco->console($message);
  }

  public static function getInstance($aseco)
  {
    if (is_null(self::$_instance))
      self::$_instance = new ss_plugin_status($aseco);
    return self::$_instance;
  }
}

function ss_handle_player_connect($aseco, $player)
{
  $plugin = ss_plugin_status::getInstance($aseco);
  if ($plugin->reloadBlacklist())
  {
    if ($plugin->isPlayerBlacklisted($player))
    {
      $aseco->console('[!!!] Player is blacklisted!');
      $aseco->client->query('Kick', $player->login, 'You are blacklisted. Bye bye!');
    }
  }
}