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<?php |
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/** |
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* Onboarding support for the mcp-adapter transport — REST endpoints + localized |
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* data for the Settings → MCP tab. |
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* |
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* Scoped to the ADAPTER path specifically, which is why it lives beside the |
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* bridges rather than beside the capabilities: everything here exists to get a |
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* site from "the mcp-adapter plugin is not installed" to "an agent can reach the |
| 9 |
* adapter's server". It is: |
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* - injects `window.templately.mcp` so the React tab knows the adapter's |
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* endpoint URL, WP-CLI paths, and current adapter/app-password availability; |
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* - mints a WordPress Application Password for the current admin (the Basic-Auth |
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* credential the adapter's HTTP transport needs), returned base64-encoded and |
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* shown once; |
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* - installs + activates the separately-distributed "MCP Adapter" plugin |
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* (wp.org if it ever lands there, else the GitHub latest-release built asset). |
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* |
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* The BUILT-IN server needs none of this — it has no external plugin to install |
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* and issues its own credentials. Its connection management is a separate |
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* surface in `modules/mcp-server/REST/Connections.php`. |
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* |
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* @package Templately\Modules\WpAbilitiesApi\REST |
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*/ |
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|
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namespace Templately\Modules\WpAbilitiesApi\REST; |
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|
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use Templately\Modules\McpCore\Support\Permissions; |
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use Templately\Modules\WpAbilitiesApi\Adapters\McpAdapterBridge; |
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use Templately\Utils\Base; |
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use WP_Application_Passwords; |
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use WP_Error; |
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use WP_REST_Request; |
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use WP_REST_Response; |
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|
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class Connection extends Base { |
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|
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/** Main-file path of the MCP Adapter plugin (folder/main-file). */ |
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const ADAPTER_PLUGIN_FILE = 'mcp-adapter/mcp-adapter.php'; |
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|
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/** wp.org slug — tried first (not published there today, kept forward-compatible). */ |
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const ADAPTER_WPORG_SLUG = 'mcp-adapter'; |
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|
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/** GitHub latest-release API — the canonical distribution (ships a built `mcp-adapter.zip`). */ |
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const ADAPTER_GH_RELEASES = 'https://api.github.com/repos/WordPress/mcp-adapter/releases/latest'; |
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|
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public function __construct() { |
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add_filter( 'templately_admin_localized_data', [ $this, 'inject_localized_data' ] ); |
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add_action( 'rest_api_init', [ $this, 'register_routes' ] ); |
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} |
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|
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/** |
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* Expose the data the MCP tab needs on `window.templately.mcp`. |
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* |
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* @param array $data |
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* @return array |
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*/ |
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public function inject_localized_data( $data ) { |
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$user = wp_get_current_user(); |
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|
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$data['mcp'] = [ |
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'adapter_active' => McpAdapterBridge::is_available(), |
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'adapter_installed' => $this->is_adapter_installed(), |
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'app_passwords_available' => $user->exists() && wp_is_application_passwords_available() && wp_is_application_passwords_available_for_user( $user ), |
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'can_install' => $this->can_install_adapter(), |
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'endpoint' => get_rest_url( null, McpAdapterBridge::NAMESPACE . '/' . McpAdapterBridge::ROUTE ), |
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'server_id' => McpAdapterBridge::SERVER_ID, |
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'wp_path' => untrailingslashit( ABSPATH ), |
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'in_container' => self::is_containerized(), |
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'wp_user' => $user->user_login, |
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'is_ssl' => is_ssl(), |
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'docs_url' => 'https://github.com/WordPress/mcp-adapter#readme', |
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]; |
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|
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return $data; |
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} |
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|
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public function register_routes(): void { |
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register_rest_route( |
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'templately/v1', |
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'/mcp/app-password', |
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[ |
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'methods' => 'POST', |
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'callback' => [ $this, 'create_app_password' ], |
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'permission_callback' => [ Permissions::class, 'can_use_abilities' ], |
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'args' => [ |
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'name' => [ |
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'type' => 'string', |
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'required' => false, |
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'sanitize_callback' => 'sanitize_text_field', |
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], |
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], |
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] |
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); |
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|
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register_rest_route( |
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'templately/v1', |
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'/mcp/install-adapter', |
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[ |
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'methods' => 'POST', |
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'callback' => [ $this, 'install_adapter' ], |
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'permission_callback' => [ $this, 'can_install_adapter' ], |
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] |
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); |
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|
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register_rest_route( |
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'templately/v1', |
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'/mcp/status', |
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[ |
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'methods' => 'GET', |
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'callback' => [ $this, 'get_status' ], |
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'permission_callback' => [ Permissions::class, 'can_use_abilities' ], |
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] |
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); |
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} |
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|
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/** |
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* Whether the current user may install/activate the MCP Adapter plugin. |
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* DISALLOW_FILE_MODS (set on locked-down/managed sites) hard-blocks it. |
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* |
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* @return bool |
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*/ |
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public function can_install_adapter(): bool { |
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if ( defined( 'DISALLOW_FILE_MODS' ) && DISALLOW_FILE_MODS ) { |
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return false; |
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} |
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return current_user_can( 'install_plugins' ) && current_user_can( 'activate_plugins' ); |
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} |
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|
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/** |
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* Fresh availability snapshot — the tab polls this after an install to |
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* flip from the "install" CTA to the "connect" instructions without a reload. |
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*/ |
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public function get_status(): WP_REST_Response { |
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$user = wp_get_current_user(); |
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|
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return new WP_REST_Response( |
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[ |
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'adapter_active' => McpAdapterBridge::is_available(), |
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'adapter_installed' => $this->is_adapter_installed(), |
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'app_passwords_available' => $user->exists() && wp_is_application_passwords_available() && wp_is_application_passwords_available_for_user( $user ), |
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'can_install' => $this->can_install_adapter(), |
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] |
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); |
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} |
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|
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/** |
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* Mint a WordPress Application Password for the current admin and return the |
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* base64 Basic-Auth credential the MCP HTTP transport needs. The plaintext |
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* password is returned ONCE (WordPress never stores it in the clear) — the |
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* client must surface it immediately and not persist it server-side. |
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* |
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* @param WP_REST_Request $request |
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* @return WP_REST_Response|WP_Error |
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*/ |
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public function create_app_password( WP_REST_Request $request ) { |
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$user = wp_get_current_user(); |
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|
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if ( ! $user->exists() ) { |
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return new WP_Error( 'templately_mcp_no_user', __( 'No authenticated user.', 'templately' ), [ 'status' => 401 ] ); |
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} |
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|
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if ( ! wp_is_application_passwords_available() || ! wp_is_application_passwords_available_for_user( $user ) ) { |
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return new WP_Error( |
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'templately_mcp_app_pw_unavailable', |
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__( 'Application Passwords are not available for your account. They require an HTTPS connection.', 'templately' ), |
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[ 'status' => 400 ] |
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); |
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} |
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|
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$name = $request->get_param( 'name' ); |
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if ( empty( $name ) ) { |
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$name = __( 'Templately MCP (AI agent)', 'templately' ); |
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} |
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|
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// Reuse the single named slot instead of piling up duplicates: WordPress can't |
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// return an already-created password's plaintext, so "reuse" here means revoke |
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// any prior password WE created under this exact name before minting the fresh |
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// one — the site keeps exactly one active Templately-MCP credential, never a |
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// growing list from repeated clicks. (The React tab additionally avoids |
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// re-minting at all once it already holds a credential this session.) |
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$existing = WP_Application_Passwords::get_user_application_passwords( $user->ID ); |
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foreach ( is_array( $existing ) ? $existing : [] as $item ) { |
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if ( isset( $item['name'], $item['uuid'] ) && $item['name'] === $name ) { |
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WP_Application_Passwords::delete_application_password( $user->ID, $item['uuid'] ); |
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} |
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} |
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|
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$created = WP_Application_Passwords::create_new_application_password( $user->ID, [ 'name' => $name ] ); |
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if ( is_wp_error( $created ) ) { |
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return $created; |
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} |
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|
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$password = $created[0]; // plaintext — shown once. |
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$item = is_array( $created[1] ?? null ) ? $created[1] : []; |
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|
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return new WP_REST_Response( |
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[ |
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'username' => $user->user_login, |
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'password' => $password, |
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'base64' => base64_encode( $user->user_login . ':' . $password ), |
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'uuid' => $item['uuid'] ?? '', |
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'name' => $item['name'] ?? $name, |
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] |
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); |
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} |
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|
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/** |
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* Install (if needed) and activate the MCP Adapter plugin. |
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* |
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* @return WP_REST_Response|WP_Error |
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*/ |
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public function install_adapter() { |
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if ( ! function_exists( 'get_plugins' ) ) { |
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require_once ABSPATH . 'wp-admin/includes/plugin.php'; |
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} |
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|
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// Already installed → just activate. |
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if ( $this->is_adapter_installed() ) { |
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$activated = $this->activate_adapter(); |
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if ( is_wp_error( $activated ) ) { |
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return $activated; |
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} |
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return new WP_REST_Response( [ 'installed' => true, 'active' => true, 'source' => 'existing' ] ); |
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} |
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|
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require_once ABSPATH . 'wp-admin/includes/file.php'; |
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require_once ABSPATH . 'wp-admin/includes/misc.php'; |
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require_once ABSPATH . 'wp-admin/includes/plugin-install.php'; |
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if ( ! class_exists( '\WP_Upgrader' ) ) { |
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require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php'; |
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} |
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if ( ! class_exists( '\WP_Ajax_Upgrader_Skin' ) ) { |
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require_once ABSPATH . 'wp-admin/includes/class-wp-ajax-upgrader-skin.php'; |
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} |
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|
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$resolved = $this->resolve_adapter_download_url(); |
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if ( is_wp_error( $resolved ) ) { |
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return $resolved; |
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} |
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|
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$skin = new \WP_Ajax_Upgrader_Skin(); |
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$upgrader = new \Plugin_Upgrader( $skin ); |
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$result = $upgrader->install( $resolved['url'] ); |
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|
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if ( is_wp_error( $result ) ) { |
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return $result; |
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} |
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if ( is_wp_error( $skin->result ) ) { |
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return $skin->result; |
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} |
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if ( $skin->get_errors()->has_errors() ) { |
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return $skin->get_errors(); |
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} |
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if ( true !== $result ) { |
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return new WP_Error( 'templately_mcp_install_failed', __( 'MCP Adapter installation failed.', 'templately' ), [ 'status' => 500 ] ); |
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} |
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|
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$activated = $this->activate_adapter(); |
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if ( is_wp_error( $activated ) ) { |
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return $activated; |
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} |
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|
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return new WP_REST_Response( [ 'installed' => true, 'active' => true, 'source' => $resolved['source'] ] ); |
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} |
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|
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/** |
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* Resolve a downloadable MCP Adapter zip: wp.org first (forward-compatible), |
| 268 |
* then the GitHub latest-release built asset (the canonical source today). |
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* The GitHub *source* archive is intentionally avoided — it omits the bundled |
| 270 |
* `vendor/` deps the plugin needs; only the release ASSET zip is complete. |
| 271 |
* |
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* @return array{url:string,source:string}|WP_Error |
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*/ |
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private function resolve_adapter_download_url() { |
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if ( ! function_exists( 'plugins_api' ) ) { |
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require_once ABSPATH . 'wp-admin/includes/plugin-install.php'; |
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} |
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|
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$info = plugins_api( |
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'plugin_information', |
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[ 'slug' => self::ADAPTER_WPORG_SLUG, 'fields' => [ 'download_link' => true ] ] |
| 282 |
); |
| 283 |
if ( ! is_wp_error( $info ) && ! empty( $info->download_link ) ) { |
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return [ 'url' => $info->download_link, 'source' => 'wordpress.org' ]; |
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} |
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|
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// NOTE: this is GitHub's API, not the Templately cloud, so it deliberately |
| 288 |
// does NOT go through ResponseNormalizer (spec 043). That normalizer maps |
| 289 |
// Templately's `statusText` vocabulary, applies the site |
| 290 |
// verification/disconnection side-effects and returns Templately error |
| 291 |
// codes — none of which mean anything for a foreign host. Handled locally |
| 292 |
// and on purpose; a future "route everything through the normalizer" sweep |
| 293 |
// should skip this one. |
| 294 |
$response = wp_remote_get( |
| 295 |
self::ADAPTER_GH_RELEASES, |
| 296 |
[ |
| 297 |
'timeout' => 20, |
| 298 |
'headers' => [ |
| 299 |
'Accept' => 'application/vnd.github+json', |
| 300 |
'User-Agent' => 'Templately/' . ( defined( 'TEMPLATELY_VERSION' ) ? TEMPLATELY_VERSION : '1.0.0' ), |
| 301 |
], |
| 302 |
] |
| 303 |
); |
| 304 |
if ( is_wp_error( $response ) ) { |
| 305 |
return $response; |
| 306 |
} |
| 307 |
|
| 308 |
$code = wp_remote_retrieve_response_code( $response ); |
| 309 |
if ( 200 !== (int) $code ) { |
| 310 |
return new WP_Error( |
| 311 |
'templately_mcp_github_http', |
| 312 |
sprintf( __( 'Could not reach GitHub to download the MCP Adapter (HTTP %d).', 'templately' ), (int) $code ), |
| 313 |
[ 'status' => 502 ] |
| 314 |
); |
| 315 |
} |
| 316 |
|
| 317 |
$body = json_decode( wp_remote_retrieve_body( $response ), true ); |
| 318 |
$assets = ( is_array( $body ) && isset( $body['assets'] ) && is_array( $body['assets'] ) ) ? $body['assets'] : []; |
| 319 |
foreach ( $assets as $asset ) { |
| 320 |
$asset_name = $asset['name'] ?? ''; |
| 321 |
$asset_url = $asset['browser_download_url'] ?? ''; |
| 322 |
if ( $asset_url && '.zip' === substr( strtolower( $asset_name ), -4 ) ) { |
| 323 |
return [ 'url' => $asset_url, 'source' => 'github' ]; |
| 324 |
} |
| 325 |
} |
| 326 |
|
| 327 |
return new WP_Error( |
| 328 |
'templately_mcp_no_asset', |
| 329 |
__( 'No downloadable MCP Adapter release was found on GitHub.', 'templately' ), |
| 330 |
[ 'status' => 502 ] |
| 331 |
); |
| 332 |
} |
| 333 |
|
| 334 |
/** |
| 335 |
* Best-effort detection of a container (Docker/Podman) runtime. When true, the |
| 336 |
* WP-CLI STDIO command's `--path` (ABSPATH) is the path *inside* the container — |
| 337 |
* not a path that exists on the agent's host — so the UI warns and steers the |
| 338 |
* user to the HTTP method (or to run `wp` inside the container). |
| 339 |
* |
| 340 |
* @return bool |
| 341 |
*/ |
| 342 |
public static function is_containerized(): bool { |
| 343 |
if ( file_exists( '/.dockerenv' ) || file_exists( '/run/.containerenv' ) ) { |
| 344 |
return true; |
| 345 |
} |
| 346 |
// cgroup fingerprint (Linux hosts) — cheap and only read once per page load. |
| 347 |
$cgroup = '/proc/1/cgroup'; |
| 348 |
if ( is_readable( $cgroup ) ) { |
| 349 |
$contents = @file_get_contents( $cgroup ); |
| 350 |
if ( is_string( $contents ) && preg_match( '/docker|kubepods|containerd|podman/i', $contents ) ) { |
| 351 |
return true; |
| 352 |
} |
| 353 |
} |
| 354 |
return false; |
| 355 |
} |
| 356 |
|
| 357 |
private function is_adapter_installed(): bool { |
| 358 |
if ( ! function_exists( 'get_plugins' ) ) { |
| 359 |
require_once ABSPATH . 'wp-admin/includes/plugin.php'; |
| 360 |
} |
| 361 |
$plugins = get_plugins(); |
| 362 |
return isset( $plugins[ self::ADAPTER_PLUGIN_FILE ] ); |
| 363 |
} |
| 364 |
|
| 365 |
/** |
| 366 |
* @return true|WP_Error |
| 367 |
*/ |
| 368 |
private function activate_adapter() { |
| 369 |
if ( ! function_exists( 'activate_plugin' ) ) { |
| 370 |
require_once ABSPATH . 'wp-admin/includes/plugin.php'; |
| 371 |
} |
| 372 |
if ( is_plugin_active( self::ADAPTER_PLUGIN_FILE ) ) { |
| 373 |
return true; |
| 374 |
} |
| 375 |
$result = activate_plugin( self::ADAPTER_PLUGIN_FILE ); |
| 376 |
return is_wp_error( $result ) ? $result : true; |
| 377 |
} |
| 378 |
} |
| 379 |
|
