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<?php |
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|
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/** |
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* The OAuth dynamic client registration endpoint. |
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*/ |
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|
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namespace Extendify\Mcp\OAuth; |
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|
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defined('ABSPATH') || die('No direct access.'); |
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|
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use Extendify\Config; |
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|
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/** |
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* A client that publishes no metadata document registers here first (RFC 7591) |
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* and is handed an id; nothing else about it is verified. |
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*/ |
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class RegistrationEndpoint |
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{ |
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/** |
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* @return void |
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*/ |
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public static function register() |
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{ |
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\add_action('rest_api_init', [self::class, 'registerRoute']); |
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} |
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|
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/** |
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* @return void |
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*/ |
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public static function registerRoute() |
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{ |
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\register_rest_route(Config::$slug . '/' . Config::$apiVersion, '/oauth/register', [ |
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'methods' => 'POST', |
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'callback' => [self::class, 'handle'], |
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// Registration comes before any credential exists; Clients caps what a stranger can fill. |
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'permission_callback' => '__return_true', |
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'show_in_index' => false, |
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]); |
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} |
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|
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/** |
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* @param \WP_REST_Request $request - The incoming request. |
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* @return \WP_REST_Response |
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*/ |
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public static function handle(\WP_REST_Request $request) |
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{ |
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$sent = $request->get_json_params(); |
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if (!is_array($sent)) { |
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return self::answer(400, [ |
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'error' => 'invalid_client_metadata', |
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'error_description' => 'The registration must be a JSON object.', |
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]); |
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} |
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|
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$uris = is_array($sent['redirect_uris'] ?? null) ? array_values($sent['redirect_uris']) : []; |
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$acceptable = array_filter($uris, function ($uri) { |
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return is_string($uri) && Clients::acceptableRedirect($uri); |
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}); |
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if (!$uris || count($uris) > Clients::MAX_REDIRECTS || count($acceptable) !== count($uris)) { |
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return self::answer(400, [ |
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'error' => 'invalid_redirect_uri', |
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'error_description' => sprintf( |
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'Send up to %d redirect URIs, each https or http on a loopback address,' |
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. ' with no fragment and at most %d characters.', |
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Clients::MAX_REDIRECTS, |
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Clients::MAX_REDIRECT_LENGTH |
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), |
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]); |
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} |
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|
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$name = is_string($sent['client_name'] ?? null) ? $sent['client_name'] : ''; |
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$client = Clients::register($name, $uris); |
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|
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return self::answer(201, [ |
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'client_id' => $client['id'], |
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'client_id_issued_at' => time(), |
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'client_name' => $client['name'], |
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'redirect_uris' => $client['redirectUris'], |
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'token_endpoint_auth_method' => 'none', |
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'grant_types' => ['authorization_code', 'refresh_token'], |
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'response_types' => ['code'], |
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]); |
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} |
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|
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/** |
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* @param integer $status - The HTTP status. |
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* @param array $body - The JSON body. |
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* @return \WP_REST_Response |
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*/ |
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private static function answer($status, array $body) |
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{ |
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$response = new \WP_REST_Response($body, $status); |
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$response->header('Cache-Control', 'no-store'); |
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$response->header('Pragma', 'no-cache'); |
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|
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return $response; |
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} |
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} |
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|
