PHPIDS
Current file: /home/mario/workspace/php-ids.org/trunk/lib/IDS/vendors/htmlpurifier/HTMLPurifier/AttrDef/URI/IPv4.php
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 public function validate($aIP, $config, $context)
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       1                 : <?php                                                                        
       2                 :                                                                              
       3                 : /**                                                                          
       4                 :  * Validates an IPv4 address                                                 
       5                 :  * @author Feyd @ forums.devnetwork.net (public domain)                      
       6                 :  */                                                                          
       7               1 : class HTMLPurifier_AttrDef_URI_IPv4 extends HTMLPurifier_AttrDef             
       8                 : {                                                                            
       9                 :                                                                              
      10                 :     /**                                                                      
      11                 :      * IPv4 regex, protected so that IPv6 can reuse it                       
      12                 :      */                                                                      
      13                 :     protected $ip4;                                                          
      14                 :                                                                              
      15                 :     public function validate($aIP, $config, $context) {                      
      16                 :                                                                              
      17               2 :         if (!$this->ip4) $this->_loadRegex();                                
      18                 :                                                                              
      19               2 :         if (preg_match('#^' . $this->ip4 . '$#s', $aIP))                     
      20               2 :         {                                                                    
      21                 :                 return $aIP;                                                 
      22                 :         }                                                                    
      23                 :                                                                              
      24               2 :         return false;                                                        
      25                 :                                                                              
      26                 :     }                                                                        
      27                 :                                                                              
      28                 :     /**                                                                      
      29                 :      * Lazy load function to prevent regex from being stuffed in             
      30                 :      * cache.                                                                
      31                 :      */                                                                      
      32                 :     protected function _loadRegex() {                                        
      33               2 :         $oct = '(?:25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]|[0-9])'; // 0-255
      34               2 :         $this->ip4 = "(?:{$oct}\\.{$oct}\\.{$oct}\\.{$oct})";                
      35               2 :     }                                                                        
      36                 :                                                                              
      37                 : }                                                                            
      38                 :                                                                              

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