John Davidson

Message:

I want to use unicodeString from symfoni in laravel controller

protected function validateWaWebhook($known_token, Request $request)

    {

        if (($signature = $request->headers->get('X-Hub-Signature-256')) == null) {

            // throw new BadRequestHttpException('Header not set');

            return "header not set";

        }



        $signature_parts = explode('=', $signature);



        if (count($signature_parts) != 2) {

            // throw new BadRequestHttpException('signature has invalid format');

            return "Signature invalid format";

        }



        $type = UnicodeString($request->getContent())->normalize(UnicodeString::NFC);

        

        $known_signature = hash_hmac('sha256', $type, $known_token,false);



        if (! hash_equals($known_signature, $signature_parts[1])) {

            // throw new UnauthorizedException('Could not verify request signature ' . $signature_parts[1]);

            return "Could not verify signature";

        }

        return "Valid signature";

    }

When i try it it show

Error: Call to undefined function App\Http\Controllers\UnicodeString()

I've called the symphony

use Symfony\Component\String\UnicodeString;

---

My Answer:
>header('X-Signature')) && ($body = $request->getContent())) {
$unicodeString = new Symfony\Component\String\UnicodeString($body);
$computed_signature = hash_hmac('sha256', $unicodeString->toString(), $known_token);

if ($signature === $computed_signature) {
// Signature is valid
return true;
}
}

// Signature is invalid
return false;
}