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<?php
use MediaWiki\Auth\AuthenticationRequest;
class ReCaptchaNoCaptcha extends SimpleCaptcha {
// used for renocaptcha-edit, renocaptcha-addurl, renocaptcha-badlogin, renocaptcha-createaccount,
// renocaptcha-create, renocaptcha-sendemail via getMessage()
protected static $messagePrefix = 'renocaptcha-';
private $error = null;
/**
* Get the captcha form.
* @param int $tabIndex
* @return array
*/
function getFormInformation( $tabIndex = 1 ) {
global $wgReCaptchaSiteKey, $wgLang;
$lang = htmlspecialchars( urlencode( $wgLang->getCode() ) );
$output = Html::element( 'div', [
'class' => [
'g-recaptcha',
'mw-confirmedit-captcha-fail' => !!$this->error,
],
'data-sitekey' => $wgReCaptchaSiteKey
] );
$htmlUrlencoded = htmlspecialchars( urlencode( $wgReCaptchaSiteKey ) );
$output .= <<<HTML
<noscript>
<div>
<div style="width: 302px; height: 422px; position: relative;">
<div style="width: 302px; height: 422px; position: absolute;">
<iframe src="https://www.google.com/recaptcha/api/fallback?k={$htmlUrlencoded}&hl={$lang}"
frameborder="0" scrolling="no"
style="width: 302px; height:422px; border-style: none;">
</iframe>
</div>
</div>
<div style="width: 300px; height: 60px; border-style: none;
bottom: 12px; left: 25px; margin: 0px; padding: 0px; right: 25px;
background: #f9f9f9; border: 1px solid #c1c1c1; border-radius: 3px;">
<textarea id="g-recaptcha-response" name="g-recaptcha-response"
class="g-recaptcha-response"
style="width: 250px; height: 40px; border: 1px solid #c1c1c1;
margin: 10px 25px; padding: 0px; resize: none;" >
</textarea>
</div>
</div>
</noscript>
HTML;
return [
'html' => $output,
'headitems' => [
// Insert reCAPTCHA script, in display language, if available.
// Language falls back to the browser's display language.
// See https://developers.google.com/recaptcha/docs/faq
"<script src=\"https://www.google.com/recaptcha/api.js?hl={$lang}\" async defer></script>"
]
];
}
/**
* @param Status|array|string $info
*/
protected function logCheckError( $info ) {
if ( $info instanceof Status ) {
$errors = $info->getErrorsArray();
$error = $errors[0][0];
} elseif ( is_array( $info ) ) {
$error = implode( ',', $info );
} else {
$error = $info;
}
wfDebugLog( 'captcha', 'Unable to validate response: ' . $error );
}
/**
* @param WebRequest $request
* @return array
*/
protected function getCaptchaParamsFromRequest( WebRequest $request ) {
$index = 'not used'; // ReCaptchaNoCaptcha combines captcha ID + solution into a single value
// API is hardwired to return captchaWord, so use that if the standard isempty
$response = $request->getVal( 'g-recaptcha-response', $request->getVal( 'captchaWord' ) );
return [ $index, $response ];
}
/**
* Check, if the user solved the captcha.
*
* Based on reference implementation:
* https://github.com/google/recaptcha#php
*
* @param mixed $_ Not used (ReCaptcha v2 puts index and solution in a single string)
* @param string $word captcha solution
* @return bool
*/
function passCaptcha( $_, $word ) {
global $wgRequest, $wgReCaptchaSecretKey, $wgReCaptchaSendRemoteIP;
$url = 'https://www.google.com/recaptcha/api/siteverify';
// Build data to append to request
$data = [
'secret' => $wgReCaptchaSecretKey,
'response' => $word,
];
if ( $wgReCaptchaSendRemoteIP ) {
$data['remoteip'] = $wgRequest->getIP();
}
$url = wfAppendQuery( $url, $data );
$request = MWHttpRequest::factory( $url, [ 'method' => 'GET' ] );
$status = $request->execute();
if ( !$status->isOK() ) {
$this->error = 'http';
$this->logCheckError( $status );
return false;
}
$response = FormatJson::decode( $request->getContent(), true );
if ( !$response ) {
$this->error = 'json';
$this->logCheckError( $this->error );
return false;
}
if ( isset( $response['error-codes'] ) ) {
$this->error = 'recaptcha-api';
$this->logCheckError( $response['error-codes'] );
return false;
}
return $response['success'];
}
/**
* @param array &$resultArr
*/
function addCaptchaAPI( &$resultArr ) {
$resultArr['captcha'] = $this->describeCaptchaType();
$resultArr['captcha']['error'] = $this->error;
}
/**
* @return array
*/
public function describeCaptchaType() {
global $wgReCaptchaSiteKey;
return [
'type' => 'recaptchanocaptcha',
'mime' => 'image/png',
'key' => $wgReCaptchaSiteKey,
];
}
/**
* Show a message asking the user to enter a captcha on edit
* The result will be treated as wiki text
*
* @param string $action Action being performed
* @return string Wikitext
*/
public function getMessage( $action ) {
$msg = parent::getMessage( $action );
if ( $this->error ) {
$msg = new RawMessage( '<div class="error">$1</div>', [ $msg ] );
}
return $msg;
}
/**
* @param ApiBase &$module
* @param array &$params
* @param int $flags
* @return bool
*/
public function APIGetAllowedParams( &$module, &$params, $flags ) {
if ( $flags && $this->isAPICaptchaModule( $module ) ) {
$params['g-recaptcha-response'] = [
ApiBase::PARAM_HELP_MSG => 'renocaptcha-apihelp-param-g-recaptcha-response',
];
}
return true;
}
public function getError() {
return $this->error;
}
public function storeCaptcha( $info ) {
// ReCaptcha is stored by Google; the ID will be generated at that time as well, and
// the one returned here won't be used. Just pretend this worked.
return 'not used';
}
public function retrieveCaptcha( $index ) {
// just pretend it worked
return [ 'index' => $index ];
}
public function getCaptcha() {
// ReCaptcha is handled by frontend code + an external provider; nothing to do here.
return [];
}
/**
* @param array $captchaData
* @param string $id
* @return Message
*/
public function getCaptchaInfo( $captchaData, $id ) {
return wfMessage( 'renocaptcha-info' );
}
/**
* @return ReCaptchaNoCaptchaAuthenticationRequest
*/
public function createAuthenticationRequest() {
return new ReCaptchaNoCaptchaAuthenticationRequest();
}
/**
* @param array $requests
* @param array $fieldInfo
* @param array &$formDescriptor
* @param string $action
*/
public function onAuthChangeFormFields(
array $requests, array $fieldInfo, array &$formDescriptor, $action
) {
global $wgReCaptchaSiteKey;
$req = AuthenticationRequest::getRequestByClass( $requests,
CaptchaAuthenticationRequest::class, true );
if ( !$req ) {
return;
}
// ugly way to retrieve error information
$captcha = ConfirmEditHooks::getInstance();
$formDescriptor['captchaWord'] = [
'class' => HTMLReCaptchaNoCaptchaField::class,
'key' => $wgReCaptchaSiteKey,
'error' => $captcha->getError(),
] + $formDescriptor['captchaWord'];
}
}
|
