QuestyCaptcha.class.php

   1 <?php
   2
   3 /**
   4  * QuestyCaptcha class
   5  *
   6  * @file
   7  * @author Benjamin Lees <emufarmers@gmail.com>
   8  * @ingroup Extensions
   9  */
  10
  11 class QuestyCaptcha extends SimpleCaptcha {
  12
  13         /** Validate a captcha response */
  14         function keyMatch( $answer, $info ) {
  15                 return strtolower( $answer ) == strtolower( $info['answer'] );
  16         }
  17
  18         function addCaptchaAPI( &$resultArr ) {
  19                 $captcha = $this->getCaptcha();
  20                 $index = $this->storeCaptcha( $captcha );
  21                 $resultArr['captcha']['type'] = 'question';
  22                 $resultArr['captcha']['mime'] = 'text/plain';
  23                 $resultArr['captcha']['id'] = $index;
  24                 $resultArr['captcha']['question'] = $captcha['question'];
  25         }
  26
  27         function getCaptcha() {
  28                 global $wgCaptchaQuestions;
  29                 return $wgCaptchaQuestions[mt_rand( 0, count( $wgCaptchaQuestions ) - 1 )]; // pick a question, any question
  30         }
  31
  32         function getForm() {
  33                 $captcha = $this->getCaptcha();
  34                 if ( !$captcha ) {
  35                         die( "No questions found; set some in LocalSettings.php using the format from QuestyCaptcha.php." );
  36                 }
  37                 $index = $this->storeCaptcha( $captcha );
  38                 return "<p><label for=\"wpCaptchaWord\">{$captcha['question']}</label> " .
  39                         Xml::element( 'input', array(
  40                                 'name' => 'wpCaptchaWord',
  41                                 'id'   => 'wpCaptchaWord',
  42                                 'tabindex' => 1 ) ) . // tab in before the edit textarea
  43                         "</p>\n" .
  44                         Xml::element( 'input', array(
  45                                 'type'  => 'hidden',
  46                                 'name'  => 'wpCaptchaId',
  47                                 'id'    => 'wpCaptchaId',
  48                                 'value' => $index ) );
  49         }
  50
  51         function getMessage( $action ) {
  52                 $name = 'questycaptcha-' . $action;
  53                 $text = wfMsg( $name );
  54                 # Obtain a more tailored message, if possible, otherwise, fall back to
  55                 # the default for edits
  56                 return wfEmptyMsg( $name, $text ) ? wfMsg( 'questycaptcha-edit' ) : $text;
  57         }
  58
  59         function showHelp() {
  60                 global $wgOut, $ceAllowConfirmedEmail;
  61                 $wgOut->setPageTitle( wfMsg( 'captchahelp-title' ) );
  62                 $wgOut->addWikiText( wfMsg( 'questycaptchahelp-text' ) );
  63                 if ( $this->storage->cookiesNeeded() ) {
  64                         $wgOut->addWikiText( wfMsg( 'captchahelp-cookies-needed' ) );
  65                 }
  66         }
  67 }