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<?php |
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namespace kalanis\kw_forms\Controls\Security\Captcha; |
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use kalanis\kw_rules\Interfaces\IRules; |
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/** |
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* The NOCAPTCHA server URL's |
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*/ |
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define('NOCAPTCHA_API_SERVER', 'https://www.google.com/recaptcha/api.js'); |
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define('NOCAPTCHA_API_SECURE_SERVER', 'https://www.google.com/recaptcha/api/siteverify'); |
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/** |
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* Class NoCaptcha |
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* @package kalanis\kw_forms\Controls\Security\Captcha |
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* Define NoCaptcha service to render captcha |
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* Uses service from Google to check if response contains correct answer |
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* @codeCoverageIgnore remote service |
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*/ |
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class NoCaptcha extends ACaptcha |
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{ |
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/** @var string */ |
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protected static $publicKey = ''; |
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/** @var string */ |
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protected static $privateKey = ''; |
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public static function init(string $privateKey, string $publicKey): void |
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{ |
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static::$publicKey = $publicKey; |
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static::$privateKey = $privateKey; |
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} |
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public function set(string $alias, string $errorMessage): self |
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{ |
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$this->setEntry($alias); |
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parent::addRule(IRules::SATISFIES_CALLBACK, $errorMessage, [$this, 'checkNoCaptcha']); |
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return $this; |
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} |
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public function addRule(/** @scrutinizer ignore-unused */ string $ruleName, /** @scrutinizer ignore-unused */ string $errorText, /** @scrutinizer ignore-unused */ ...$args): void |
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{ |
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// no additional rules applicable |
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} |
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/** |
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* @param mixed $value |
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* @return bool |
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*/ |
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public function checkNoCaptcha($value): bool |
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{ |
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// entry has key: g-recaptcha-response |
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$response = strval(file_get_contents(NOCAPTCHA_API_SECURE_SERVER . '?secret=' . static::$privateKey . '&response=' . strval($value))); |
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$responseStructure = json_decode($response, true); |
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return !is_null($responseStructure) && !empty($responseStructure['success']) && true === $responseStructure['success']; |
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} |
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public function renderInput($attributes = null): string |
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{ |
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return $this->canPass() ? '' : $this->getHtml(); |
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} |
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/** |
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* Gets the challenge HTML (javascript only version). |
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* This is called from the browser, and the resulting NoReCAPTCHA HTML widget |
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* is embedded within the HTML form it was called from. |
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* |
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* @return string - The HTML to be embedded in the user's form. |
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*/ |
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protected function getHtml(): string |
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{ |
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return '<script src="' . NOCAPTCHA_API_SERVER . '"></script> |
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<div class="g-recaptcha" data-sitekey="' . static::$publicKey. '"></div>'; |
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} |
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} |
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alex-kalanis /
kw_forms
