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  1. <?php
  2.  
  3. namespace Kitsune\ClubPenguin\Plugins\AntiCensor;
  4.  
  5. use Kitsune\Logging\Logger;
  6. use Kitsune\ClubPenguin\Packets\Packet;
  7. use Kitsune\ClubPenguin\Plugins\Base\Plugin;
  8.  
  9. final class AntiCensor extends Plugin {
  10.  
  11. public $worldHandlers = array(
  12. "s" => array(
  13. "m#sm" => array("handleSendMessage", self::Before),
  14. "m#spm" => array("handleSendPrivateMessage", self::Before),
  15. "s#upm" => array("handleSendUpdatePlayerMood", self::Before)
  16. )
  17. );
  18.  
  19. public $xmlHandlers = array(null);
  20.  
  21. public $urls;
  22. public $excludables = array("cpps"); #~ list of phrases to exclude from the filter
  23. public $cache;
  24.  
  25. const FileName = "censor.json";
  26.  
  27. public function __construct($server) {
  28. $this->server = $server;
  29. }
  30.  
  31. public function onReady() {
  32. parent::__construct(__CLASS__);
  33.  
  34. if(file_exists(self::FileName)) {
  35. $jsonData = file_get_contents(self::FileName);
  36. } else {
  37. Logger::Error("Couldn't locate '" . self::FileName . "'");
  38. return;
  39. }
  40.  
  41. $this->urls = json_decode($jsonData, true);
  42. $this->cache = $this->urls; #~ cache the original urls so we can update the data store
  43.  
  44. Logger::Info("Building table of banned URLs");
  45.  
  46. #~ generate a table of cheeky versions!
  47. foreach($this->urls as $url) {
  48. $url = explode(".", $url);
  49. $this->urls[] = implode("", $url);
  50. if(!in_array($url[0], $this->excludables)) {
  51. $this->urls[] = $url[0];
  52. }
  53. }
  54.  
  55. Logger::Info("Table of " . count($this->urls) . " bad URLs built");
  56. }
  57.  
  58. public function handleSendMessage($penguin) {
  59. $message = Packet::$Data[3];
  60.  
  61. if(!$this->check($message)) {
  62. Packet::$Extension = null;
  63. Logger::Warn("{$penguin->username} sent bad URL '$message'");
  64. }
  65. }
  66.  
  67. public function handleSendPrivateMessage($penguin) {
  68. $message = Packet::$Data[3];
  69.  
  70. if(!$this->check($message)) {
  71. Packet::$Extension = null;
  72. Logger::Warn("{$penguin->username} sent bad URL '$message'");
  73. }
  74. }
  75.  
  76. public function handleSendUpdatePlayerMood($penguin) {
  77. $mood = Packet::$Data[2];
  78.  
  79. if(!$this->check($mood)) {
  80. Packet::$Extension = null;
  81. Logger::Warn("{$penguin->username} used a bad URL in their mood '$mood'");
  82. }
  83. }
  84.  
  85. private function check($string) {
  86. #~ reverse any dumb shit the user did to fool the system
  87.  
  88. $normalizeChars = array(
  89. 'Š'=>'S', 'š'=>'s', '?'=>'Dj','Ž'=>'Z', 'ž'=>'z', 'A'=>'A', 'Á'=>'A', 'Â'=>'A', 'A'=>'A', 'Ä'=>'A',
  90. 'A'=>'A', 'A'=>'A', 'Ç'=>'C', 'E'=>'E', 'É'=>'E', 'E'=>'E', 'Ë'=>'E', 'I'=>'I', 'Í'=>'I', 'Î'=>'I',
  91. 'I'=>'I', 'N'=>'N', 'Ń'=>'N', 'O'=>'O', 'Ó'=>'O', 'Ô'=>'O', 'O'=>'O', 'Ö'=>'O', 'O'=>'O', 'U'=>'U', 'Ú'=>'U',
  92. 'U'=>'U', 'Ü'=>'U', 'Ý'=>'Y', '?'=>'B', 'ß'=>'Ss','a'=>'a', 'á'=>'a', 'â'=>'a', 'a'=>'a', 'ä'=>'a',
  93. 'a'=>'a', 'a'=>'a', 'ç'=>'c', 'e'=>'e', 'é'=>'e', 'e'=>'e', 'ë'=>'e', 'i'=>'i', 'í'=>'i', 'î'=>'i',
  94. 'i'=>'i', '?'=>'o', 'n'=>'n', 'ń'=>'n', 'o'=>'o', 'ó'=>'o', 'ô'=>'o', 'o'=>'o', 'ö'=>'o', 'o'=>'o', 'u'=>'u',
  95. 'ú'=>'u', 'u'=>'u', 'ü'=>'u', 'ý'=>'y', 'ý'=>'y', '?'=>'b', 'y'=>'y', 'f'=>'f',
  96. 'ă'=>'a', 'î'=>'i', 'â'=>'a', '?'=>'s', '?'=>'t', 'Ă'=>'A', 'Î'=>'I', 'Â'=>'A', '?'=>'S', '?'=>'T',
  97. );
  98. $string = strtr($string, $normalizeChars);
  99.  
  100. $string = strtolower($string);
  101.  
  102. $old = $string;
  103. $string .= preg_replace("/(.)\\1+/", "$1", $old);
  104.  
  105. $string = preg_replace("/[^A-Za-z0-9]/", "", $string);
  106.  
  107. $english = array("a", "e", "s", "a", "o", "t", "l", "H", "W", "M", "D", "V", "x", ".");
  108. $leet = array("4", "3", "z", "4", "0", "+", "1", "|-|", "\\/\\/", "|\\/|", "|)", "\\/", "><", "dot");
  109.  
  110. $string = str_replace($leet, $english, $string);
  111.  
  112. #~ check if their message contains a banned URL
  113. foreach($this->urls as $url) {
  114. if(strpos($string, $url) !== false){
  115. return false;
  116. }
  117.  
  118. $url = preg_replace("/(.)\\1+/", "$1", $url);
  119. if(strpos($string, $url) !== false && $url != $old) {
  120. return false;
  121. }
  122. }
  123.  
  124. return true;
  125. }
  126. }
  127.  
  128. ?>
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