IO support/community

Hi @sharedeals

Does anyone know how to generate the signature in PHP? I keep getting 401 Unauthorized. The client must authenticate itself to get the requested response.

it work to me:

<?php

declare(strict_types=1);


namespace WalmartBundle\Services;


use Psr\Log\LoggerInterface;
use Symfony\Component\HttpClient\HttpClient;
use Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface;
use Symfony\Contracts\HttpClient\HttpClientInterface;
use Symfony\Contracts\HttpClient\ResponseInterface;

/**
 * @author Serge Gorenstein <digitkraft@gmail.com>
 */
class WalmartHttpClient
{
    private const WM_BASE_URL = 'https://developer.api.walmart.com/api-proxy/service/affil/product/v2/';
    private const WM_CONSUMER_ID = 'YOU CONSUMER_ID';
    private const WM_SEC_KEY_VERSION = '2';
    private const WM_SEC_PRIVATE_KEY = 'YOU PRIVATE_KEY';

    protected HttpClientInterface $httpClient;
    protected string $milliseconds;
    private LoggerInterface $logger;

    public function __construct(LoggerInterface $logger)
    {
        $this->logger = $logger;
        $this->milliseconds = (string)round(microtime(true) * 1000);
        $this->httpClient = HttpClient::create($this->getDefaultOptions());
    }

    public function request(string $method, string $path, array $option = []): ResponseInterface
    {
        $url = self::WM_BASE_URL . $path;

        try {
            return $this->httpClient->request($method, $url, $option);
        } catch (TransportExceptionInterface $e) {
            $this->logger->error($url . ' :: ' . $e->getMessage());
            throw $e;
        }
    }

    private function getDefaultOptions(): array
    {
        return [
            'headers' => [
                'WM_SEC.KEY_VERSION' => self::WM_SEC_KEY_VERSION,
                'WM_CONSUMER.ID' => self::WM_CONSUMER_ID,
                'WM_CONSUMER.INTIMESTAMP' => $this->milliseconds,
                'WM_SEC.AUTH_SIGNATURE' => $this->getSignature(),
                'Accept' => 'application/json',
            ],
            //'max_host_connections' => 1,
            //'timeout' => 15.0,
            //'max_duration' => 60.0,
            //'http_version' => '1.1',
        ];
    }

    private function getSignature(): string
    {
        $message = self::WM_CONSUMER_ID . "\n" . $this->milliseconds . "\n" . self::WM_SEC_KEY_VERSION . "\n";

        return WalmartAuthSignature::sign($message, self::WM_SEC_PRIVATE_KEY);
    }
}

<?php

declare(strict_types=1);

namespace WalmartBundle\Services;


use phpseclib\Crypt\RSA;

/**
 * Class WalmartAuthSignature
 *
 *  Thanks: https://github.com/fillup/walmart-auth-signature-php/blob/develop/src/Signature.php

 * @author Serge Gorenstein <digitkraft@gmail.com>
 * @package WalmartBundle\Services
 */
class WalmartAuthSignature
{
    public static function sign(string $message, string $privateKey): string
    {
        $rsa = new RSA();

        $decodedPrivateKey = base64_decode($privateKey);
        $rsa->setPrivateKeyFormat(RSA::PRIVATE_FORMAT_PKCS8);
        $rsa->setPublicKeyFormat(RSA::PRIVATE_FORMAT_PKCS8);

        if ($rsa->loadKey($decodedPrivateKey, RSA::PRIVATE_FORMAT_PKCS8)) {
            $rsa->setHash('sha256');
            $rsa->setSignatureMode(RSA::SIGNATURE_PKCS1);
            $signed = $rsa->sign($message);

            return base64_encode($signed);
        }

        throw new \Exception('Unable to load private key');
    }
}