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<?php
namespace Anhskohbo\NoCaptcha;
use Symfony\Component\HttpFoundation\Request;
use GuzzleHttp\Client;
class NoCaptcha
{
const CLIENT_API = 'https://www.google.com/recaptcha/api.js';
const VERIFY_URL = 'https://www.google.com/recaptcha/api/siteverify';
/**
* The recaptcha secret key.
*
* @var string
*/
protected $secret;
/**
* The recaptcha sitekey key.
*
* @var string
*/
protected $sitekey;
/**
* @var \GuzzleHttp\Client
*/
protected $http;
/**
* NoCaptcha.
*
* @param string $secret
* @param string $sitekey
*/
public function __construct($secret, $sitekey)
{
$this->secret = $secret;
$this->sitekey = $sitekey;
$this->http = new Client([ 'timeout' => 2.0 ]);
}
/**
* Render HTML captcha.
*
* @param array $attributes
* @param string $lang
*
* @return string
*/
public function display($attributes = [], $lang = null)
{
$attributes['data-sitekey'] = $this->sitekey;
$html = '<script src="'.$this->getJsLink($lang).'" async defer></script>'."\n";
$html .= '<div class="g-recaptcha"'.$this->buildAttributes($attributes).'></div>';
return $html;
}
/**
* Verify no-captcha response.
*
* @param string $response
* @param string $clientIp
*
* @return bool
*/
public function verifyResponse($response, $clientIp = null)
{
if (empty($response)) {
return false;
}
$response = $this->sendRequestVerify([
'secret' => $this->secret,
'response' => $response,
'remoteip' => $clientIp,
]);
return isset($response['success']) && $response['success'] === true;
}
/**
* Verify no-captcha response by Symfony Request.
*
* @param Request $request
*
* @return bool
*/
public function verifyRequest(Request $request)
{
return $this->verifyResponse(
$request->get('g-recaptcha-response'),
$request->getClientIp()
);
}
/**
* Get recaptcha js link.
*
* @param string $lang
*
* @return string
*/
public function getJsLink($lang = null)
{
return $lang ? static::CLIENT_API.'?hl='.$lang : static::CLIENT_API;
}
/**
* Send verify request.
*
* @param array $query
*
* @return array
*/
protected function sendRequestVerify(array $query = [])
{
$response = $this->http->request('POST', static::VERIFY_URL, [
'form_params' => $query,
]);
return json_decode($response->getBody(), true);
}
/**
* Build HTML attributes.
*
* @param array $attributes
*
* @return string
*/
protected function buildAttributes(array $attributes)
{
$html = [];
foreach ($attributes as $key => $value) {
$html[] = $key.'="'.$value.'"';
}
return count($html) ? ' '.implode(' ', $html) : '';
}
}
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