UserAgent.php

Go to the documentation of this file.

<?php
 
namespace Rsi\Fred\Security\Check;
 
class UserAgent extends \Rsi\Fred\Security\Check{
 
  public $illegal = ['<script','{','}']; //!< Array containing illegal characters / snippets (reg-ex).
 
  public function check($expected = false){
    if($user_agent = $this->component('client')->userAgent){
      $user_agent = preg_replace('/\\d+/','*',$user_agent);
      if(preg_match('/(' . implode('|',$this->illegal) . ')/i',$user_agent)) return false;
      $orig = $this->session->userAgent;
      if($orig !== null) return $user_agent === $orig;
      $this->session->userAgent = $user_agent;
    }
    return true;
  }
 
}