<?php
declare(strict_types=1);
/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2021 Spomky-Labs
*
* This software may be modified and distributed under the terms
* of the MIT license. See the LICENSE file for details.
*/
namespace Webauthn\MetadataService;
use Assert\Assertion;
use Base64Url\Base64Url;
use Psr\Http\Client\ClientInterface;
use Psr\Http\Message\RequestFactoryInterface;
use function Safe\json_decode;
use function Safe\sprintf;
class DistantSingleMetadata extends SingleMetadata
{
/**
* @var ClientInterface
*/
private $httpClient;
/**
* @var RequestFactoryInterface
*/
private $requestFactory;
/**
* @var array
*/
private $additionalHeaders;
/**
* @var string
*/
private $uri;
/**
* @var bool
*/
private $isBase64Encoded;
public function __construct(string $uri, bool $isBase64Encoded, ClientInterface $httpClient, RequestFactoryInterface $requestFactory, array $additionalHeaders = [])
{
parent::__construct($uri, $isBase64Encoded); //Useless
$this->uri = $uri;
$this->isBase64Encoded = $isBase64Encoded;
$this->httpClient = $httpClient;
$this->requestFactory = $requestFactory;
$this->additionalHeaders = $additionalHeaders;
}
public function getMetadataStatement(): MetadataStatement
{
$payload = $this->fetch();
$json = $this->isBase64Encoded ? Base64Url::decode($payload) : $payload;
$data = json_decode($json, true);
return MetadataStatement::createFromArray($data);
}
private function fetch(): string
{
$request = $this->requestFactory->createRequest('GET', $this->uri);
foreach ($this->additionalHeaders as $k => $v) {
$request = $request->withHeader($k, $v);
}
$response = $this->httpClient->sendRequest($request);
Assertion::eq(200, $response->getStatusCode(), sprintf('Unable to contact the server. Response code is %d', $response->getStatusCode()));
$content = $response->getBody()->getContents();
Assertion::notEmpty($content, 'Unable to contact the server. The response has no content');
return $content;
}
}