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<?php |
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/** |
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* Install Bundled Plugin — a server-side ability. The website builder uses it |
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* in place of `wp plugin install <slug> --activate` and |
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* `wp plugin activate <slug>`. RunWpCli's dispatcher now refuses both of |
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* those. It redirects them to the browser-proxied `zipai/install-plugin` and |
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* `zipai/activate-plugin` js_hook tools. Those tools cannot run from a |
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* server-to-server call. There is no browser session for them. |
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* |
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* This ability runs `Plugin_Upgrader` server-side. This is the same path the |
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* admin "Install Now" button uses. A server-side install is acceptable here |
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* for these reasons: |
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* 1. The caller is the trusted builder backend (Bearer-auth). |
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* 2. The acting WP user must have `install_plugins` and `activate_plugins`. |
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* `setup_user_context()` resolves this user. |
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* 3. The slug is limited to lower-case alphanumerics and hyphens. |
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* These are the WP.org plugin-directory naming rules. |
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* 4. The code honours `DISALLOW_FILE_MODS`. |
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* |
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* The ability is hidden from the LLM catalog (`meta.visibility = internal`). |
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* So chat-driven installs still flow through the browser-proxied path. |
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* |
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* @since 0.0.5 |
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* @package zip-ai |
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*/ |
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|
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namespace ZipAI\MCP\Classes\Abilities\Zipai\Builder; |
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|
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use ZipAI\MCP\Classes\Abilities\Abstract_Ability; |
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use ZipAI\MCP\Classes\Core\Tool_Types; |
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use ZipAI\MCP\Classes\Core\Response; |
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use ZipAI\MCP\Classes\Core\Helper; |
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use ZipAI\MCP\Classes\Core\Plugin_Abilities_Toggler; |
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|
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defined( 'ABSPATH' ) || exit; |
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|
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/** |
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* Ability: install (if missing) and activate a wp.org plugin slug. |
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*/ |
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class InstallBundledPlugin extends Abstract_Ability { |
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|
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/** |
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* Flags this ability as destructive (mutates site state). |
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* |
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* @var bool |
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*/ |
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protected $is_destructive = true; |
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|
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/** |
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* Configures the ability's id, label, description and metadata. |
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* |
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* @return void |
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*/ |
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public function configure() { |
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$this->id = 'zipai/install-bundled-plugin'; |
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$this->label = 'Install Bundled Plugin (server-side)'; |
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$this->description = 'Install and optionally activate a wp.org plugin slug. Internal builder-side replacement for `wp plugin install <slug> --activate` / `wp plugin activate <slug>` — those wp-cli paths route to browser-proxied js_hook tools which cannot run from a Laravel server-to-server call.'; |
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// Caller must hold BOTH caps. `install_plugins` is checked again |
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// inside `Plugin_Upgrader::install()` by core; we re-check here so |
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// any future direct caller still gets the same gate. |
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$this->capability = 'install_plugins'; |
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|
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$this->meta['visibility'] = 'internal'; |
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} |
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|
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/** |
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* Returns the tool-type classification for this ability. |
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* |
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* @return string One of the Tool_Types constants. |
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*/ |
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public function get_tool_type() { |
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return Tool_Types::ACTION; |
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} |
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|
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/** |
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* Returns the JSON Schema for this ability's input arguments. |
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* |
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* @return array<string,mixed> JSON Schema describing accepted arguments. |
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*/ |
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public function get_input_schema() { |
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return array( |
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'type' => 'object', |
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'required' => array( 'slug' ), |
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'additionalProperties' => false, |
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'properties' => array( |
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'slug' => array( |
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'type' => 'string', |
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'description' => 'wp.org plugin slug (lower-case alphanumerics and hyphens, e.g. "contact-form-7"). NOT a `folder/file.php` shape.', |
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'pattern' => '^[a-z0-9][a-z0-9-]{0,62}$', |
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), |
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'activate' => array( |
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'type' => 'boolean', |
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'description' => 'Activate after install. Default true. If the plugin is already installed but inactive, activation still runs.', |
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'default' => true, |
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), |
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), |
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); |
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} |
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|
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/** |
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* Installs (if missing) and optionally activates a wp.org plugin slug. |
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* |
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* @param array<string,mixed> $args Validated input arguments. |
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* @return array<string,mixed> Standardized success or error response. |
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*/ |
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public function execute( $args ) { |
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// Validate the RAW input against the slug regex first — `sanitize_key` |
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// silently strips slashes / dots / spaces which would otherwise let |
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// shapes like "foo/bar.php" pass and then fail later at wp.org lookup |
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// with a misleading "Plugin not found" message. |
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$raw_slug = isset( $args['slug'] ) && is_string( $args['slug'] ) ? $args['slug'] : ''; |
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$activate = isset( $args['activate'] ) ? (bool) $args['activate'] : true; |
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|
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if ( '' === $raw_slug || ! preg_match( '/^[a-z0-9][a-z0-9-]{0,62}$/', $raw_slug ) ) { |
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return self::coded_error( 'Invalid slug — expected wp.org plugin slug (a–z, 0–9, hyphens).', 'invalid_slug' ); |
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} |
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$slug = sanitize_key( $raw_slug ); |
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|
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// File-mods gate first — if file mods are off, capability state is moot. |
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if ( ! wp_is_file_mod_allowed( 'zipai_install_bundled_plugin' ) ) { |
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return self::coded_error( 'File modifications are disabled on this site (DISALLOW_FILE_MODS or the file_mod_allowed filter).', 'file_mods_disabled' ); |
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} |
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|
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// Capability double-check — defense-in-depth on top of the Abilities |
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// API `permission_callback`. |
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if ( ! current_user_can( 'install_plugins' ) ) { |
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return self::coded_error( 'You do not have install_plugins capability.', 'insufficient_capability' ); |
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} |
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if ( $activate && ! current_user_can( 'activate_plugins' ) ) { |
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return self::coded_error( 'You do not have activate_plugins capability.', 'insufficient_capability' ); |
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} |
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|
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// Network-admin gate — installing into a multisite from a sub-site is |
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// surprising; restrict to network admins. |
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if ( is_multisite() && ! is_super_admin() ) { |
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return self::coded_error( 'On multisite, only network super-admins may install plugins.', 'multisite_super_admin_required' ); |
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} |
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|
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// Bring in admin-only loaders. |
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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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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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if ( ! class_exists( 'Plugin_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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// Plugin_Upgrader may call request_filesystem_credentials() through |
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// WP_Upgrader internals. Load file.php explicitly in non-admin |
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// contexts to avoid fatal "undefined function" during server-side |
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// installs invoked server-to-server. |
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if ( ! function_exists( 'request_filesystem_credentials' ) ) { |
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require_once ABSPATH . 'wp-admin/includes/file.php'; |
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} |
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|
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// Fast path: already installed → skip install, jump to activate. |
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$existing_file = Helper::find_plugin_file_for_slug( $slug ); |
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|
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if ( null === $existing_file ) { |
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// Not installed — fetch package URL + run install. |
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$information = plugins_api( |
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'plugin_information', |
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array( |
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'slug' => $slug, |
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'fields' => array( 'sections' => false ), |
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) |
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); |
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if ( is_wp_error( $information ) ) { |
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return self::coded_error( 'wp.org lookup failed: ' . $information->get_error_message(), 'wporg_lookup_failed' ); |
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} |
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$package = is_object( $information ) && isset( $information->download_link ) && is_string( $information->download_link ) ? $information->download_link : ''; |
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if ( '' === $package ) { |
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return self::coded_error( sprintf( 'wp.org returned no download link for "%s".', $slug ), 'wporg_missing_download_link' ); |
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} |
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|
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// Hard-pin the download host, same as the system/ install |
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// abilities: the API response rides plain-parseable JSON, and the |
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// upgrader runs whatever archive URL it is handed. |
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$download_host = wp_parse_url( $package, PHP_URL_HOST ); |
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if ( 'downloads.wordpress.org' !== $download_host ) { |
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return self::coded_error( |
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sprintf( 'Refusing to install "%s": download host "%s" is not downloads.wordpress.org.', $slug, is_string( $download_host ) ? $download_host : '' ), |
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'untrusted_download_host' |
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); |
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} |
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|
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$upgrader = new \Plugin_Upgrader( new \WP_Ajax_Upgrader_Skin() ); |
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$result = $upgrader->install( $package ); |
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if ( is_wp_error( $result ) ) { |
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return self::coded_error( 'install failed: ' . $result->get_error_message(), 'install_failed' ); |
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} |
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if ( ! $result ) { |
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return self::coded_error( 'install failed (unknown error).', 'install_failed' ); |
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} |
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$existing_file = $upgrader->plugin_info(); |
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if ( ! $existing_file ) { |
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$existing_file = Helper::find_plugin_file_for_slug( $slug ); |
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} |
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if ( ! $existing_file ) { |
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return self::coded_error( 'install succeeded but plugin file could not be resolved.', 'plugin_file_unresolved' ); |
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} |
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} |
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|
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$was_active = is_plugin_active( $existing_file ) || is_plugin_active_for_network( $existing_file ); |
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if ( $activate && ! $was_active ) { |
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$activation = activate_plugin( $existing_file ); |
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if ( is_wp_error( $activation ) ) { |
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return self::coded_error( 'activation failed: ' . $activation->get_error_message(), 'activation_failed' ); |
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} |
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// `activate_plugin()` returns null on success OR when an |
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// `update_option(active_plugins)` filter silently rejected the |
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// write. Verify post-state so silent-failure surfaces as a real |
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// error instead of a false success. Read the option stores directly |
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// (equivalent to is_plugin_active/is_plugin_active_for_network) so the |
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// re-check reflects the post-activation runtime state. |
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$active_plugins = (array) get_option( 'active_plugins', array() ); |
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$network_plugins = is_multisite() ? (array) get_site_option( 'active_sitewide_plugins', array() ) : array(); |
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$still_inactive = ! in_array( $existing_file, $active_plugins, true ) && ! isset( $network_plugins[ $existing_file ] ); |
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if ( $still_inactive ) { |
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return self::coded_error( |
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sprintf( 'activate_plugin() returned no error for "%s" but plugin is still inactive — likely an `update_option(active_plugins)` filter rejected the write.', $slug ), |
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'activation_rejected' |
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); |
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} |
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} |
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|
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$toggle_result = Plugin_Abilities_Toggler::enable_for_slug( $slug ); |
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|
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// Read the version off the plugin header rather than from get_plugins(), |
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// whose cache can predate an install this call just ran. Callers gate |
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// features on a minimum version, so a stale reading would gate on the |
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// wrong number. Additive field — the rest of the payload is unchanged. |
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$plugin_data = get_plugin_data( WP_PLUGIN_DIR . '/' . $existing_file, false, false ); |
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$version = $plugin_data['Version']; |
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|
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return Response::success( |
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array( |
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'slug' => $slug, |
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'file' => $existing_file, |
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'version' => $version, |
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'active' => $activate ? ( is_plugin_active( $existing_file ) || is_plugin_active_for_network( $existing_file ) ) : $was_active, |
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'toggles' => $toggle_result, |
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'message' => $activate |
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? sprintf( 'Plugin "%s" installed and active.', $slug ) |
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: sprintf( 'Plugin "%s" installed.', $slug ), |
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) |
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); |
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} |
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|
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/** |
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* Returns the JSON Schema for this ability's response. |
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* |
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* @return array<string,mixed> JSON Schema describing the response shape. |
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*/ |
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public function get_output_schema() { |
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return array( |
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'type' => 'object', |
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'properties' => array( |
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'success' => array( 'type' => 'boolean' ), |
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'message' => array( 'type' => 'object' ), |
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), |
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); |
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} |
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|
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/** |
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* Error payload with machine-readable code for callers. |
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* |
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* @param string $message Human-readable error. |
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* @param string $code Stable error code. |
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* @return array<string,mixed> |
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*/ |
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private static function coded_error( string $message, string $code ): array { |
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return array( |
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'success' => false, |
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'error' => $message, |
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'error_code' => $code, |
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); |
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} |
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} |
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|
