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<?php |
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declare(strict_types=1); |
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namespace TMV\OpenIdClient\Issuer\Metadata\Provider; |
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use function array_key_exists; |
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use function explode; |
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use Http\Discovery\Psr17FactoryDiscovery; |
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use Http\Discovery\Psr18ClientDiscovery; |
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use function http_build_query; |
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use function is_array; |
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use function is_string; |
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use function parse_url; |
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use Psr\Http\Client\ClientExceptionInterface; |
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use Psr\Http\Client\ClientInterface; |
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use Psr\Http\Message\RequestFactoryInterface; |
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use Psr\Http\Message\UriFactoryInterface; |
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use function strpos; |
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use TMV\OpenIdClient\Exception\InvalidArgumentException; |
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use TMV\OpenIdClient\Exception\RuntimeException; |
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use function TMV\OpenIdClient\normalize_webfinger; |
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use function TMV\OpenIdClient\parse_metadata_response; |
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final class WebFingerProvider implements WebFingerProviderInterface |
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{ |
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private const OIDC_DISCOVERY = '/.well-known/openid-configuration'; |
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private const WEBFINGER = '/.well-known/webfinger'; |
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private const REL = 'http://openid.net/specs/connect/1.0/issuer'; |
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private const AAD_MULTITENANT_DISCOVERY = 'https://login.microsoftonline.com/common/v2.0$' . self::OIDC_DISCOVERY; |
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/** @var ClientInterface */ |
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private $client; |
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/** @var RequestFactoryInterface */ |
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private $requestFactory; |
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/** @var UriFactoryInterface */ |
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private $uriFactory; |
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/** @var DiscoveryProviderInterface */ |
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private $discoveryProvider; |
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2 |
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public function __construct( |
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?ClientInterface $client = null, |
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?RequestFactoryInterface $requestFactory = null, |
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?UriFactoryInterface $uriFactory = null, |
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?DiscoveryProviderInterface $discoveryProvider = null |
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) { |
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$this->client = $client ?: Psr18ClientDiscovery::find(); |
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$this->requestFactory = $requestFactory ?: Psr17FactoryDiscovery::findRequestFactory(); |
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$this->uriFactory = $uriFactory ?: Psr17FactoryDiscovery::findUrlFactory(); |
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$this->discoveryProvider = $discoveryProvider ?: new DiscoveryProvider( |
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$this->client, |
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$this->requestFactory, |
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$this->uriFactory |
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); |
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} |
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public function fetch(string $resource): array |
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{ |
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$resource = normalize_webfinger($resource); |
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$parsedUrl = parse_url( |
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false !== strpos($resource, '@') |
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? 'https://' . explode('@', $resource)[1] |
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: $resource |
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); |
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if (! is_array($parsedUrl) || ! array_key_exists('host', $parsedUrl)) { |
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throw new RuntimeException('Unable to parse resource'); |
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} |
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$host = $parsedUrl['host']; |
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/** @var string|int|null $port */ |
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$port = $parsedUrl['port'] ?? null; |
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if ((int) $port > 0) { |
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$host .= ':' . $port; |
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} |
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$webFingerUrl = $this->uriFactory->createUri('https://' . $host . self::WEBFINGER) |
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->withQuery(http_build_query(['resource' => $resource, 'rel' => self::REL])); |
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$request = $this->requestFactory->createRequest('GET', $webFingerUrl) |
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->withHeader('accept', 'application/json'); |
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try { |
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$data = parse_metadata_response($this->client->sendRequest($request)); |
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} catch (ClientExceptionInterface $e) { |
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throw new RuntimeException('Unable to fetch provider metadata', 0, $e); |
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} |
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$links = $data['links'] ?? []; |
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$href = null; |
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foreach ($links as $link) { |
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if (! is_array($link)) { |
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continue; |
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} |
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if (($link['rel'] ?? null) !== self::REL) { |
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continue; |
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} |
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if (! array_key_exists('href', $link)) { |
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continue; |
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} |
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$href = $link['href']; |
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} |
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if (! is_string($href) || 0 !== strpos($href, 'https://')) { |
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throw new InvalidArgumentException('Invalid issuer location'); |
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} |
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$metadata = $this->discoveryProvider->discovery($href); |
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if (($metadata['issuer'] ?? null) !== $href) { |
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throw new RuntimeException('Discovered issuer mismatch'); |
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} |
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return $metadata; |
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} |
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} |
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thomasvargiu /
php-openid-client
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