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<?php |
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/** |
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* Loopback self-test for the NotificationX MCP server. |
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* |
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* Calls the site's own MCP endpoint the way an AI client would and reports the |
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* first thing that is wrong, so an admin gets an actionable answer ("HTTPS |
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* mismatch", "0 tools") instead of a silent "connected but useless" state. |
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* |
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* @package NotificationX\MCP |
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*/ |
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|
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namespace NotificationX\MCP; |
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|
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use NotificationX\GetInstance; |
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|
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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|
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/** |
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* @method static SelfTest get_instance( $args = null ) |
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*/ |
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class SelfTest { |
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|
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use GetInstance; |
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|
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/** |
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* Run the staged diagnostic. |
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* |
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* @return array { ok:bool, step:string, message:string, tools:int } |
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*/ |
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public function run() { |
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if ( ! Manager::get_instance()->is_enabled() ) { |
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return $this->fail( 'disabled', __( 'MCP is turned off.', 'notificationx' ) ); |
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} |
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|
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$pairing = Pairing::get_instance(); |
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if ( ! $pairing->is_connected() ) { |
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return $this->fail( 'not_connected', __( 'No connection token has been generated yet.', 'notificationx' ) ); |
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} |
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|
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$endpoint = home_url( '/notificationx/mcp' ); |
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$token = $pairing->site_token(); |
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|
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// 1) Authenticated tools/list must succeed and return at least one tool. |
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$response = wp_remote_post( $endpoint, array( |
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'timeout' => 15, |
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'sslverify' => apply_filters( 'https_local_ssl_verify', false ), // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound -- core filter name. |
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'headers' => array( |
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'Content-Type' => 'application/json', |
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'Authorization' => 'Bearer ' . $token, |
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), |
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'body' => wp_json_encode( array( |
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'jsonrpc' => '2.0', |
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'id' => 1, |
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'method' => 'tools/list', |
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'params' => (object) array(), |
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) ), |
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) ); |
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|
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if ( is_wp_error( $response ) ) { |
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return $this->fail( 'unreachable', sprintf( |
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/* translators: %s: error detail. */ |
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__( 'The MCP endpoint could not be reached from the server itself: %s', 'notificationx' ), |
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$response->get_error_message() |
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) ); |
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} |
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|
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$code = wp_remote_retrieve_response_code( $response ); |
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if ( 401 === (int) $code || 403 === (int) $code ) { |
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return $this->fail( 'auth', __( 'The endpoint rejected the connection token.', 'notificationx' ) ); |
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} |
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|
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$body = json_decode( wp_remote_retrieve_body( $response ), true ); |
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$tools = isset( $body['result']['tools'] ) && is_array( $body['result']['tools'] ) ? count( $body['result']['tools'] ) : 0; |
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|
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if ( $tools < 1 ) { |
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return $this->fail( 'no_tools', __( 'The server responded but exposed no tools.', 'notificationx' ) ); |
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} |
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|
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// 2) An unauthenticated call must be challenged (401 + WWW-Authenticate). |
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$probe = wp_remote_post( $endpoint, array( |
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'timeout' => 15, |
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'sslverify' => apply_filters( 'https_local_ssl_verify', false ), // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound -- core filter name. |
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'headers' => array( 'Content-Type' => 'application/json' ), |
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'body' => wp_json_encode( array( 'jsonrpc' => '2.0', 'id' => 2, 'method' => 'ping' ) ), |
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) ); |
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|
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if ( ! is_wp_error( $probe ) ) { |
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$probe_code = (int) wp_remote_retrieve_response_code( $probe ); |
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$challenge = wp_remote_retrieve_header( $probe, 'www-authenticate' ); |
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if ( 401 !== $probe_code || empty( $challenge ) ) { |
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return $this->fail( 'challenge', __( 'The endpoint did not correctly challenge an unauthenticated request; OAuth discovery may fail for some clients.', 'notificationx' ) ); |
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} |
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} |
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|
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return array( |
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'ok' => true, |
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'step' => 'ok', |
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'message' => sprintf( |
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/* translators: %d: number of tools. */ |
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_n( 'MCP is working. %d tool is available.', 'MCP is working. %d tools are available.', $tools, 'notificationx' ), |
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$tools |
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), |
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'tools' => $tools, |
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); |
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} |
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|
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/** |
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* Build a failure result. |
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* |
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* @param string $step Failing step id. |
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* @param string $message Human message. |
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* @return array |
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*/ |
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protected function fail( $step, $message ) { |
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return array( |
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'ok' => false, |
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'step' => $step, |
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'message' => $message, |
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'tools' => 0, |
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); |
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} |
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} |
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|
