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<?php |
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namespace Kmedia\ReCaptcha; |
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use Locale; |
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use SilverStripe\Control\Controller; |
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use SilverStripe\Forms\FormField; |
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use SilverStripe\i18n\i18n; |
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use SilverStripe\ORM\FieldType\DBHTMLText; |
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use SilverStripe\View\Requirements; |
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class ReCaptchaField extends FormField |
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{ |
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/** |
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* Captcha theme, currently options are light and dark |
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* @config ReCaptchaField.theme |
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* @default light |
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* @var string |
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*/ |
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private static $theme = 'light'; |
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/** |
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* Captcha size, currently options are normal, compact and invisible |
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* @config ReCaptchaField.size |
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* @default normal |
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* @var string |
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*/ |
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private static $size = 'normal'; |
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/** |
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* Captcha badge, currently options are bottomright, bottomleft and inline |
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* @config ReCaptchaField.size |
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* @default bottomright |
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* @var string |
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*/ |
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private static $badge = 'bottomright'; |
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/** |
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* Recaptcha Site Key - Configurable via Injector config |
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*/ |
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protected $siteKey; |
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/** |
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* Recaptcha Secret Key - Configurable via Injector config |
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*/ |
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protected $secretKey; |
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/** |
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* Getter for siteKey |
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* @return string |
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*/ |
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public function getSiteKey() |
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{ |
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return $this->siteKey; |
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} |
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/** |
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* Setter for siteKey to allow injector config to override the value |
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*/ |
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public function setSiteKey($siteKey) |
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{ |
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$this->siteKey = $siteKey; |
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} |
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/** |
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* Getter for secretKey |
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* @return string |
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*/ |
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public function getSecretKey() |
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{ |
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return $this->secretKey; |
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} |
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/** |
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* Setter for secretKey to allow injector config to override the value |
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* @param string $secretKey |
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*/ |
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public function setSecretKey($secretKey) |
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{ |
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$this->secretKey = $secretKey; |
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} |
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/** |
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* Getter for theme |
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* @return string |
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*/ |
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public function getTheme() |
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{ |
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return $this->config()->theme; |
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} |
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/** |
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* Getter for size |
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* @return string |
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*/ |
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public function getSize() |
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{ |
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return $this->config()->size; |
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} |
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/** |
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* Getter for badge |
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* @return string |
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*/ |
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public function getBadge() |
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{ |
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return $this->config()->badge; |
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} |
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/** |
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* Adds the requirements and returns the form field. |
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* @param array $properties |
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* @return DBHTMLText |
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*/ |
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public function Field($properties = array()) |
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{ |
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if (empty($this->siteKey) || empty($this->secretKey)) { |
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user_error('You must set SS_RECAPTCHA_SITE_KEY and SS_RECAPTCHA_SECRET_KEY environment.', E_USER_ERROR); |
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} |
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Requirements::customScript("var SS_LOCALE='" . Locale::getPrimaryLanguage(i18n::get_locale()) . "',ReCaptchaFormId='" . $this->getFormID() . "';"); |
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Requirements::javascript('kmedia/silverstripe-recaptcha:javascript/domReady.js'); |
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Requirements::javascript('kmedia/silverstripe-recaptcha:javascript/ReCaptchaField.js'); |
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return parent::Field($properties); |
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} |
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/** |
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* Getter for the form's id |
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* @return string |
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*/ |
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public function getFormID() |
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{ |
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return $this->form ? $this->getTemplateHelper()->generateFormID($this->form) : null; |
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} |
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public function validate($validator) |
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{ |
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$recaptchaResponse = Controller::curr()->getRequest()->requestVar('g-recaptcha-response'); |
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$response = json_decode((string)$this->siteVerify($recaptchaResponse), true); |
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return $this->verify($response, $validator); |
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} |
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private function siteVerify($token) |
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{ |
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$url = 'https://www.google.com/recaptcha/api/siteverify?secret=' |
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. $this->secretKey . '&response=' . rawurlencode($token) |
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. '&remoteip=' . rawurlencode($_SERVER['REMOTE_ADDR']); |
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$ch = curl_init(); |
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if ($ch === false) { |
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user_error('An error occurred when initializing cURL.', E_USER_ERROR); |
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return false; |
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} |
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curl_setopt_array($ch, [ |
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CURLOPT_URL => $url, |
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CURLOPT_TIMEOUT => 10, |
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CURLOPT_RETURNTRANSFER => true, |
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CURLOPT_SSL_VERIFYPEER => true, |
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]); |
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$result = curl_exec($ch); |
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if ($result === false) { |
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user_error('An error occurred while cURL was being executed: ' . curl_error($ch), E_USER_ERROR); |
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return false; |
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} |
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curl_close($ch); |
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return $result; |
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} |
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private function verify($response, $validator) |
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{ |
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if (is_array($response)) { |
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if (array_key_exists('success', $response) && $response['success'] == false) { |
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$validator->validationError( |
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$this->name, |
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_t('Kmedia\\ReCaptcha.EMPTY', |
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'Please answer the captcha, if you do not see the captcha please enable JavaScript.'), |
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'validation' |
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); |
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return false; |
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} |
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} else { |
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$validator->validationError($this->name, |
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_t('Kmedia\\ReCaptcha.VALIDATE_ERROR', 'Captcha could not be validated.'), |
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'validation'); |
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return false; |
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} |
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return true; |
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} |
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} |
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kMediaGbR /
silverstripe-recaptcha
