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   1  <?php
   2  
   3  declare(strict_types=1);
   4  
   5  /*
   6   * The MIT License (MIT)
   7   *
   8   * Copyright (c) 2014-2019 Spomky-Labs
   9   *
  10   * This software may be modified and distributed under the terms
  11   * of the MIT license.  See the LICENSE file for details.
  12   */
  13  
  14  namespace Webauthn\MetadataService;
  15  
  16  use function League\Uri\build;
  17  use function League\Uri\build_query;
  18  use function League\Uri\parse;
  19  use function League\Uri\parse_query;
  20  use Psr\Http\Client\ClientInterface;
  21  use Psr\Http\Message\RequestFactoryInterface;
  22  
  23  class MetadataService
  24  {
  25      /**
  26       * @var ClientInterface
  27       */
  28      private $httpClient;
  29  
  30      /**
  31       * @var RequestFactoryInterface
  32       */
  33      private $requestFactory;
  34  
  35      /**
  36       * @var array
  37       */
  38      private $additionalQueryStringValues;
  39  
  40      /**
  41       * @var array
  42       */
  43      private $additionalHeaders;
  44      /**
  45       * @var string
  46       */
  47      private $serviceUri;
  48  
  49      public function __construct(string $serviceUri, ClientInterface $httpClient, RequestFactoryInterface $requestFactory, array $additionalQueryStringValues = [], array $additionalHeaders = [])
  50      {
  51          $this->serviceUri = $serviceUri;
  52          $this->httpClient = $httpClient;
  53          $this->requestFactory = $requestFactory;
  54          $this->additionalQueryStringValues = $additionalQueryStringValues;
  55          $this->additionalHeaders = $additionalHeaders;
  56      }
  57  
  58      public function getMetadataStatementFor(MetadataTOCPayloadEntry $entry): MetadataStatement
  59      {
  60          $uri = $this->buildUri($entry->getUrl());
  61  
  62          return MetadataStatementFetcher::fetchMetadataStatement($uri, true, $this->httpClient, $this->requestFactory, $this->additionalHeaders);
  63      }
  64  
  65      public function getMetadataTOCPayload(): MetadataTOCPayload
  66      {
  67          $uri = $this->buildUri($this->serviceUri);
  68  
  69          return MetadataStatementFetcher::fetchTableOfContent($uri, $this->httpClient, $this->requestFactory, $this->additionalHeaders);
  70      }
  71  
  72      private function buildUri(string $uri): string
  73      {
  74          $parsedUri = parse($uri);
  75          $queryString = $parsedUri['query'];
  76          $query = parse_query($queryString ?? '');
  77          foreach ($this->additionalQueryStringValues as $k => $v) {
  78              $query[$k] = $v;
  79          }
  80          $parsedUri['query'] = build_query($query);
  81  
  82          return build($parsedUri);
  83      }
  84  }