mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/ConfirmEdit
synced 2024-11-13 18:07:00 +00:00
140 lines
4.2 KiB
PHP
140 lines
4.2 KiB
PHP
<?php
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/**
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* Captcha class using the reCAPTCHA widget.
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* Stop Spam. Read Books.
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*
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* @addtogroup Extensions
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* @author Mike Crawford <mike.crawford@gmail.com>
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* @copyright Copyright (c) 2007 reCAPTCHA -- http://recaptcha.net
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* @licence MIT/X11
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*/
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if( !defined( 'MEDIAWIKI' ) ) {
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exit;
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}
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$wgExtensionMessagesFiles['ReCaptcha'] = dirname( __FILE__ ) . '/ReCaptcha.i18n.php';
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require_once( 'recaptchalib.php' );
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// Set these in LocalSettings.php
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$wgReCaptchaPublicKey = '';
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$wgReCaptchaPrivateKey = '';
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// For backwards compatibility
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$recaptcha_public_key = '';
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$recaptcha_private_key = '';
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/**
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* Make sure the keys are defined.
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*/
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function efReCaptcha() {
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global $wgReCaptchaPublicKey, $wgReCaptchaPrivateKey;
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global $recaptcha_public_key, $recaptcha_private_key;
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global $wgServerName;
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// Backwards compatibility
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$wgReCaptchaPublicKey == '' ) {
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$wgReCaptchaPublicKey = $recaptcha_public_key;
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}
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if ( $wgReCaptchaPrivateKey == '' ) {
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$wgReCaptchaPrivateKey = $recaptcha_private_key;
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}
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if ($wgReCaptchaPublicKey == '' || $wgReCaptchaPrivateKey == '') {
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die ('You need to set $wgReCaptchaPrivateKey and $wgReCaptchaPublicKey in LocalSettings.php to ' .
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"use the reCAPTCHA plugin. You can sign up for a key <a href='" .
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htmlentities(recaptcha_get_signup_url ($wgServerName, "mediawiki")) . "'>here</a>.");
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}
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}
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class ReCaptcha extends SimpleCaptcha {
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//reCAPTHCA error code returned from recaptcha_check_answer
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private $recaptcha_error = null;
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/**
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* Displays the reCAPTCHA widget.
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* If $this->recaptcha_error is set, it will display an error in the widget.
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*
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*/
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function getForm() {
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global $wgReCaptchaPublicKey;
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return "<script>var RecaptchaOptions = { tabindex : 1 }; </script> " .
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recaptcha_get_html($wgReCaptchaPublicKey, $this->recaptcha_error);
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}
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/**
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* Calls the library function recaptcha_check_answer to verify the users input.
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* Sets $this->recaptcha_error if the user is incorrect.
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* @return boolean
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*
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*/
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function passCaptcha() {
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global $wgReCaptchaPrivateKey;
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$recaptcha_response = recaptcha_check_answer ($wgReCaptchaPrivateKey,
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wfGetIP (),
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$_POST['recaptcha_challenge_field'],
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$_POST['recaptcha_response_field']);
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if (!$recaptcha_response->is_valid) {
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$this->recaptcha_error = $recaptcha_response->error;
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return false;
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}
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$recaptcha_error = null;
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return true;
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}
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/**
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* Called on all edit page saves. (EditFilter events)
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* @return boolean - true if page save should continue, false if should display Captcha widget.
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*/
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function confirmEdit( $editPage, $newtext, $section ) {
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if( $this->shouldCheck( $editPage, $newtext, $section ) ) {
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if (!isset($_POST['recaptcha_response_field'])) {
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//User has not yet been presented with Captcha, show the widget.
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$editPage->showEditForm( array( &$this, 'editCallback' ) );
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return false;
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}
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if( $this->passCaptcha() ) {
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return true;
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} else {
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//Try again - show the widget
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$editPage->showEditForm( array( &$this, 'editCallback' ) );
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return false;
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}
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} else {
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wfDebug( "ConfirmEdit: no need to show captcha.\n" );
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return true;
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}
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}
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/**
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* Show a message asking the user to enter a captcha on edit
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* The result will be treated as wiki text
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*
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* @param $action Action being performed
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* @return string
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*/
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function getMessage( $action ) {
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$name = 'recaptcha-' . $action;
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$text = wfMsg( $name );
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# Obtain a more tailored message, if possible, otherwise, fall back to
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# the default for edits
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return wfEmptyMsg( $name, $text ) ? wfMsg( 'recaptcha-edit' ) : $text;
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}
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}
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