misc_pterodactyl-panel/app/Http/Middleware/VerifyReCaptcha.php

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<?php
namespace Pterodactyl\Http\Middleware;
use Closure;
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use stdClass;
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use GuzzleHttp\Client;
use Illuminate\Http\Request;
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use Pterodactyl\Events\Auth\FailedCaptcha;
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use Illuminate\Contracts\Config\Repository;
class VerifyReCaptcha
{
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/**
* @var \Illuminate\Contracts\Config\Repository
*/
private $config;
/**
* VerifyReCaptcha constructor.
*
* @param \Illuminate\Contracts\Config\Repository $config
*/
public function __construct(Repository $config)
{
$this->config = $config;
}
/**
* Handle an incoming request.
*
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* @param \Illuminate\Http\Request $request
* @param \Closure $next
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* @return \Illuminate\Http\RedirectResponse|mixed
*/
public function handle($request, Closure $next)
{
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if (! $this->config->get('recaptcha.enabled')) {
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return $next($request);
}
if ($request->filled('g-recaptcha-response')) {
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$client = new Client();
$res = $client->post($this->config->get('recaptcha.domain'), [
'form_params' => [
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'secret' => $this->config->get('recaptcha.secret_key'),
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'response' => $request->input('g-recaptcha-response'),
],
]);
if ($res->getStatusCode() === 200) {
$result = json_decode($res->getBody());
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if ($result->success && (! $this->config->get('recaptcha.verify_domain') || $this->isResponseVerified($result, $request))) {
return $next($request);
}
}
}
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// Emit an event and return to the previous view with an error (only the captcha error will be shown!)
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event(new FailedCaptcha($request->ip(), (! isset($result) ?: object_get($result, 'hostname'))));
return redirect()->back()->withErrors(['g-recaptcha-response' => trans('strings.captcha_invalid')])->withInput();
}
/**
* Determine if the response from the recaptcha servers was valid.
*
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* @param stdClass $result
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* @param \Illuminate\Http\Request $request
* @return bool
*/
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private function isResponseVerified(stdClass $result, Request $request): bool
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{
if (! $this->config->get('recaptcha.verify_domain')) {
return false;
}
$url = parse_url($request->url());
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return $result->hostname === array_get($url, 'host');
}
}