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<?php
class ReCaptcha extends SimpleCaptcha {
// reCAPTHCA error code returned from recaptcha_check_answer
private $recaptcha_error = null;
/**
* Displays the reCAPTCHA widget.
* If $this->recaptcha_error is set, it will display an error in the widget.
* @param OutputPage $out
*/
function getForm( OutputPage $out ) {
global $wgReCaptchaPublicKey, $wgReCaptchaTheme;
$useHttps = ( isset( $_SERVER['HTTPS'] ) && $_SERVER['HTTPS'] == 'on' );
$js = 'var RecaptchaOptions = ' . Xml::encodeJsVar( array( 'theme' => $wgReCaptchaTheme, 'tabindex' => 1 ) );
return Html::inlineScript( $js ) . recaptcha_get_html( $wgReCaptchaPublicKey, $this->recaptcha_error, $useHttps );
}
/**
* Calls the library function recaptcha_check_answer to verify the users input.
* Sets $this->recaptcha_error if the user is incorrect.
* @return boolean
*
*/
function passCaptcha() {
global $wgReCaptchaPrivateKey, $wgRequest;
// API is hardwired to return wpCaptchaId and wpCaptchaWord, so use that if the standard two are empty
$challenge = $wgRequest->getVal( 'recaptcha_challenge_field', $wgRequest->getVal( 'wpCaptchaId' ) );
$response = $wgRequest->getVal( 'recaptcha_response_field', $wgRequest->getVal( 'wpCaptchaWord' ) );
if ( $response === null ) {
// new captcha session
return false;
}
$ip = $wgRequest->getIP();
$recaptcha_response = recaptcha_check_answer(
$wgReCaptchaPrivateKey,
$ip,
$challenge,
$response
);
if ( !$recaptcha_response->is_valid ) {
$this->recaptcha_error = $recaptcha_response->error;
return false;
}
$recaptcha_error = null;
return true;
}
function addCaptchaAPI( &$resultArr ) {
global $wgReCaptchaPublicKey;
$resultArr['captcha']['type'] = 'recaptcha';
$resultArr['captcha']['mime'] = 'image/png';
$resultArr['captcha']['key'] = $wgReCaptchaPublicKey;
$resultArr['captcha']['error'] = $this->recaptcha_error;
}
/**
* Show a message asking the user to enter a captcha on edit
* The result will be treated as wiki text
*
* @param $action string Action being performed
* @return string
*/
function getMessage( $action ) {
$name = 'recaptcha-' . $action;
$text = wfMessage( $name )->text();
# Obtain a more tailored message, if possible, otherwise, fall back to
# the default for edits
return wfMessage( $name, $text )->isDisabled() ? wfMessage( 'recaptcha-edit' )->text() : $text;
}
public function APIGetAllowedParams( &$module, &$params, $flags ) {
if ( $flags && $this->isAPICaptchaModule( $module ) ) {
$params['recaptcha_challenge_field'] = null;
$params['recaptcha_response_field'] = null;
}
return true;
}
public function APIGetParamDescription( &$module, &$desc ) {
if ( $this->isAPICaptchaModule( $module ) ) {
$desc['recaptcha_challenge_field'] = 'Field from the ReCaptcha widget';
$desc['recaptcha_response_field'] = 'Field from the ReCaptcha widget';
}
return true;
}
}
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