Asirra.class.php

   1 <?php
   2 /**
   3  * @author Bachsau
   4  * @author Niklas Laxström
   5  */
   6
   7 class Asirra extends SimpleCaptcha {
   8         public $asirra_clientscript = 'http://challenge.asirra.com/js/AsirraClientSide.js';
   9
  10         // As we don't have to store anything but some other things to do,
  11         // we're going to replace that constructor completely.
  12         function __construct() {
  13                 global $wgExtensionAssetsPath, $wgAsirraScriptPath;
  14                 $this->asirra_localpath = "$wgExtensionAssetsPath/ConfirmEdit";
  15         }
  16
  17         function getForm() {
  18                 global $wgAsirraEnlargedPosition, $wgAsirraCellsPerRow, $wgOut, $wgLang;
  19
  20                 $wgOut->addModules( 'ext.confirmedit.asirra' );
  21                 $js = Html::linkedScript( $this->asirra_clientscript );
  22
  23                 $message = Xml::encodeJsVar( wfMessage( 'asirra-createaccount-fail' )->plain() );
  24                 $js .= Html::inlineScript( <<<JAVASCRIPT
  25 var asirra_js_failed = '$message';
  26 JAVASCRIPT
  27                 );
  28                 $js .=  '<noscript>' . wfMessage( 'asirra-nojs' )->parse() . '</noscript>';
  29                 return $js;
  30         }
  31
  32         function passCaptcha() {
  33                 global $wgRequest;
  34
  35                 $ticket = $wgRequest->getVal( 'Asirra_Ticket' );
  36                 $api = 'http://challenge.asirra.com/cgi/Asirra?';
  37                 $params = array(
  38                         'action' => 'ValidateTicket',
  39                         'ticket' => $ticket,
  40                 );
  41
  42                 $response = Http::get( $api . wfArrayToCgi( $params ) );
  43                 $xml = simplexml_load_string( $response );
  44                 $result = $xml->xpath( '/AsirraValidation/Result' );
  45                 return strval( $result[0] ) === 'Pass';
  46         }
  47 }