Kelunik\AcmeClient\Stores\CertificateStore::doPut PHP Method

    private function doPut(array $certificates)
    {
        if (empty($certificates)) {
            throw new InvalidArgumentException("Empty array not allowed");
        }
        $cert = new Certificate($certificates[0]);
        $commonName = $cert->getSubject()->getCommonName();
        if (!$commonName) {
            throw new CertificateStoreException("Certificate doesn't have a common name.");
        }
        // See https://github.com/amphp/dns/blob/4c4d450d4af26fc55dc56dcf45ec7977373a38bf/lib/functions.php#L83
        if (isset($commonName[253]) || !preg_match("~^(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9]){0,1})(?:\\.[a-z0-9][a-z0-9-]{0,61}[a-z0-9])*\$~i", $commonName)) {
            throw new CertificateStoreException("Invalid common name: '{$commonName}'");
        }
        try {
            $chain = array_slice($certificates, 1);
            $path = $this->root . "/" . $commonName;
            $realpath = realpath($path);
            if (!$realpath && !mkdir($path, 0775, true)) {
                throw new FilesystemException("Couldn't create certificate directory: '{$path}'");
            }
            (yield \Amp\File\put($path . "/cert.pem", $certificates[0]));
            (yield \Amp\File\chmod($path . "/cert.pem", 0644));
            (yield \Amp\File\put($path . "/fullchain.pem", implode("\n", $certificates)));
            (yield \Amp\File\chmod($path . "/fullchain.pem", 0644));
            (yield \Amp\File\put($path . "/chain.pem", implode("\n", $chain)));
            (yield \Amp\File\chmod($path . "/chain.pem", 0644));
        } catch (FilesystemException $e) {
            throw new CertificateStoreException("Couldn't save certificates for '{$commonName}'", 0, $e);
        }
    }