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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * OIDC discovery document loader. |
| 5 | * |
| 6 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 7 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 8 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 9 | * |
| 10 | * @package phpMyFAQ |
| 11 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 12 | * @copyright 2026 phpMyFAQ Team |
| 13 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 14 | * @link https://www.phpmyfaq.de |
| 15 | * @since 2026-04-18 |
| 16 | */ |
| 17 | |
| 18 | declare(strict_types=1); |
| 19 | |
| 20 | namespace phpMyFAQ\Auth\Oidc; |
| 21 | |
| 22 | use JsonException; |
| 23 | use RuntimeException; |
| 24 | use Symfony\Contracts\HttpClient\Exception\ExceptionInterface; |
| 25 | use Symfony\Contracts\HttpClient\HttpClientInterface; |
| 26 | |
| 27 | final readonly class OidcDiscoveryService |
| 28 | { |
| 29 | public function __construct( |
| 30 | private HttpClientInterface $httpClient, |
| 31 | ) { |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * @throws ExceptionInterface |
| 36 | */ |
| 37 | public function discover(OidcProviderConfig $config): OidcDiscoveryDocument |
| 38 | { |
| 39 | $response = $this->httpClient->request('GET', $config->discoveryUrl); |
| 40 | $content = $response->getContent(false); |
| 41 | |
| 42 | if ($response->getStatusCode() >= 400) { |
| 43 | throw new RuntimeException(sprintf( |
| 44 | 'OIDC discovery request failed for %s with status %d', |
| 45 | $config->provider, |
| 46 | $response->getStatusCode(), |
| 47 | )); |
| 48 | } |
| 49 | |
| 50 | try { |
| 51 | $payload = json_decode($content, associative: true, depth: 512, flags: JSON_THROW_ON_ERROR); |
| 52 | } catch (JsonException $exception) { |
| 53 | throw new RuntimeException('OIDC discovery response is not valid JSON', previous: $exception); |
| 54 | } |
| 55 | |
| 56 | if (!is_array($payload)) { |
| 57 | throw new RuntimeException(sprintf( |
| 58 | 'OIDC discovery response is not a JSON object/array, got %s', |
| 59 | gettype($payload), |
| 60 | )); |
| 61 | } |
| 62 | |
| 63 | $normalizedPayload = []; |
| 64 | foreach ($payload as $payloadKey => $payloadValue) { |
| 65 | $normalizedPayload[(string) $payloadKey] = $payloadValue; |
| 66 | } |
| 67 | |
| 68 | return OidcDiscoveryDocument::fromArray($normalizedPayload); |
| 69 | } |
| 70 | } |