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<?php |
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|
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namespace FluentBooking\App\Modules\MCP\Support; |
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|
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use FluentBooking\App\Models\Calendar; |
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use FluentBooking\App\Models\CalendarSlot; |
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use FluentBooking\App\Services\PermissionManager; |
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use FluentBooking\Framework\Support\Arr; |
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|
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defined('ABSPATH') || exit; |
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|
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/** |
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* Maps MCP abilities onto FluentBooking's capability model. The caller is a |
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* WordPress user on an application password, so every check delegates to |
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* PermissionManager, the same layer the admin REST policies use. |
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* |
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* Three layers: |
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* 1. isEnabled() the master switch, off by default. MCPInit only registers |
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* the server when it is on. |
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* 2. transport() may this user reach the endpoint at all. |
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* 3. readGate() / bookingWriteGate() / scheduleWriteGate() per-ability |
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* permission_callbacks, which keep write tools out of a |
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* read-only account's tools/list. |
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* |
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* Layer 3 only answers "may this account use this kind of tool". Per-record |
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* checks (BookingWriter::canWriteBooking(), PermissionManager::canWriteCalendar()) |
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* run inside the tool, since the permission_callback doesn't have the record. |
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* |
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* Tool annotations (readonly / destructive) are client hints; this is the |
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* enforcement boundary. |
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*/ |
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class PermissionGate |
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{ |
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/** |
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* Own option, not a key in `_fluent_booking_enabled_modules`: |
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* SettingsController::updateGlobalModules() coerces every value there to |
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* 'yes'/'no', so it can't hold the toolsets array. Autoloaded, so the |
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* boot-time isEnabled() check costs no query. |
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*/ |
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const OPTION_KEY = '_fluent_booking_mcp_settings'; |
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|
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/** |
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* Toolsets are a setting because every tool definition stays in the |
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* client's context all session (~500 tokens each; docs/mcp-server-spec.md |
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* §3.2). `core` can't be switched off. |
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*/ |
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const TOOLSET_CORE = 'core'; |
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|
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const TOOLSET_SCHEDULING = 'scheduling'; |
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|
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const TOOLSET_PAYMENTS = 'payments'; |
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|
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/** |
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* Permission sets that may change bookings. `manage_own_calendar` is the |
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* base host grant; the per-record check in the tool keeps a host to their |
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* own bookings. |
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*/ |
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const BOOKING_WRITE_CAPS = [ |
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'manage_own_calendar', |
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'manage_all_bookings', |
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'manage_all_data', |
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]; |
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|
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/** |
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* Permission sets that may change event types and availability schedules. |
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*/ |
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const SCHEDULE_WRITE_CAPS = [ |
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'manage_own_calendar', |
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'manage_other_calendars', |
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'manage_other_availabilities', |
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'manage_all_data', |
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]; |
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|
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/** |
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* permission_callback for read-only abilities. Reaching the endpoint is |
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* enough; each tool scopes its own query to what the caller may see. |
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* |
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* @param mixed $request |
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* @return true|\WP_Error |
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*/ |
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public static function readGate($request = null) |
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{ |
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return self::transport($request); |
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} |
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|
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/** |
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* permission_callback for the booking write tools. |
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* |
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* @param mixed $request |
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* @return true|\WP_Error |
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*/ |
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public static function bookingWriteGate($request = null) |
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{ |
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return self::writeGate(self::BOOKING_WRITE_CAPS, __('Your account can read bookings but not change them.', 'fluent-booking')); |
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} |
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|
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/** |
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* permission_callback for the scheduling configuration write tools. |
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* |
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* @param mixed $request |
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* @return true|\WP_Error |
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*/ |
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public static function scheduleWriteGate($request = null) |
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{ |
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return self::writeGate(self::SCHEDULE_WRITE_CAPS, __('Your account can read scheduling settings but not change them.', 'fluent-booking')); |
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} |
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|
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/** |
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* @param array $caps |
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* @param string $message |
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* @return true|\WP_Error |
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*/ |
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private static function writeGate($caps, $message) |
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{ |
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$transport = self::transport(); |
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|
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if (is_wp_error($transport)) { |
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return $transport; |
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} |
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|
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if (!PermissionManager::userCan($caps)) { |
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return MCPHelper::error('permission_denied', $message, ['required_any_of' => $caps]); |
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} |
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|
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return true; |
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} |
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|
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/** |
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* Calendar ids this caller may read, or false when they may read all of |
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* them. Every tool uses this so lists and detail reads agree on scope. |
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* Cached per request. |
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* |
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* @return array|false false means "no restriction" |
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*/ |
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public static function readableCalendarIds() |
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{ |
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static $cache = []; |
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|
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$userId = get_current_user_id(); |
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|
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// Keyed by permission set and blog too: grants can change within one |
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// request (the permission-matrix gate does this), and a multisite |
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// request can switch blogs. |
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$blogId = function_exists('get_current_blog_id') ? get_current_blog_id() : 0; |
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|
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$key = $blogId . '|' . $userId . '|' . md5((string) wp_json_encode(PermissionManager::getUserPermissions())); |
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|
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if (array_key_exists($key, $cache)) { |
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return $cache[$key]; |
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} |
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|
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if (PermissionManager::hasAllCalendarAccess(true)) { |
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return $cache[$key] = false; |
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} |
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|
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return $cache[$key] = self::resolveReadableCalendarIds($userId); |
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} |
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|
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/** |
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* The calendars a restricted user may read: the ones they own, plus the |
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* ones CalendarService::isSharedCalendar() would admit them to. Three |
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* narrow queries instead of hydrating every calendar with its events. |
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* |
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* `settings` is PHP-serialized, so team_members can't be filtered in SQL. |
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* The LIKE only narrows the rows; the in_array below decides. |
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* |
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* @param int $userId |
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* |
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* @return array |
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*/ |
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private static function resolveReadableCalendarIds($userId) |
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{ |
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global $wpdb; |
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|
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$calendars = $wpdb->prefix . (new Calendar())->getTable(); |
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$events = $wpdb->prefix . (new CalendarSlot())->getTable(); |
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|
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$owned = $wpdb->get_col($wpdb->prepare("SELECT `id` FROM `{$calendars}` WHERE `user_id` = %d", $userId)); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.PreparedSQL.InterpolatedNotPrepared, PluginCheck.Security.DirectDB.UnescapedDBParameter -- table names come from the models' getTable(), not from request input |
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|
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// isSharedCalendar()'s first branch: the user owns an event on it. |
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$hosting = $wpdb->get_col($wpdb->prepare("SELECT DISTINCT `calendar_id` FROM `{$events}` WHERE `user_id` = %d", $userId)); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.PreparedSQL.InterpolatedNotPrepared, PluginCheck.Security.DirectDB.UnescapedDBParameter -- table names come from the models' getTable(), not from request input |
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|
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$readable = array_merge(array_map('intval', $owned), array_map('intval', $hosting)); |
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|
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// and its second: the user is listed in an event's team_members. |
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$candidates = $wpdb->get_results( // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching, PluginCheck.Security.DirectDB.UnescapedDBParameter -- table names come from the models' getTable(), not from request input |
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$wpdb->prepare( |
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"SELECT `calendar_id`, `settings` FROM `{$events}` WHERE `settings` LIKE %s", // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared |
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'%' . $wpdb->esc_like('i:' . (int) $userId . ';') . '%' |
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), |
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ARRAY_A |
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); |
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|
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foreach ($candidates as $candidate) { |
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$calendarId = (int) $candidate['calendar_id']; |
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|
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if (in_array($calendarId, $readable, true)) { |
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continue; |
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} |
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$settings = maybe_unserialize($candidate['settings']); |
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|
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if (!is_array($settings)) { |
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continue; |
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} |
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$members = array_map('intval', (array) Arr::get($settings, 'team_members', [])); |
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|
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if (in_array((int) $userId, $members, true)) { |
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$readable[] = $calendarId; |
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} |
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} |
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|
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return array_values(array_unique($readable)); |
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} |
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|
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/** |
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* Apply readableCalendarIds() to a query on any table with a calendar_id. |
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* |
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* @param object $query |
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* @param string $column |
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* @return object |
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*/ |
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public static function scopeToReadableCalendars($query, $column = 'calendar_id') |
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{ |
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$ids = self::readableCalendarIds(); |
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|
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if ($ids === false) { |
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return $query; |
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} |
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|
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// whereIn with an empty set must return nothing, not everything. |
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return $query->whereIn($column, $ids ? $ids : [0]); |
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} |
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|
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/** |
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* True when the caller may read bookings beyond their own calendars. One |
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* helper so list and report tools can't drift apart on scope. |
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* |
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* @return bool |
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*/ |
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public static function canSeeAllBookings() |
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{ |
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return PermissionManager::userCanSeeAllBookings(); |
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} |
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|
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/** |
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* The `meta.scope` marker, from the same check the query uses. |
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* |
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* @return string |
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*/ |
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public static function currentScope() |
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{ |
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return self::canSeeAllBookings() ? MCPHelper::SCOPE_ALL : MCPHelper::SCOPE_OWN; |
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} |
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|
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/** |
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* Transport gate for the `fluent-booking` server. Replaces the adapter's |
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* default `current_user_can('read')`, which every subscriber passes and is |
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* too loose for attendee contact data. Per-ability checks still run on top. |
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* |
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* @param mixed $request unused; the adapter passes the REST request |
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* @return true|\WP_Error |
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*/ |
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public static function transport($request = null) |
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{ |
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if (!self::isEnabled()) { |
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return MCPHelper::error( |
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'disabled', |
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__('The FluentBooking MCP server is disabled. Enable it in FluentBooking → Settings → MCP for AI Agents.', 'fluent-booking') |
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); |
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} |
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|
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if (!is_user_logged_in()) { |
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return MCPHelper::error( |
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'unauthorized', |
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__('Authentication is required to access the FluentBooking MCP server.', 'fluent-booking') |
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); |
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} |
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|
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if (!PermissionManager::currentUserHasAnyPermission()) { |
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return MCPHelper::error( |
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'forbidden', |
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__('Your account does not have FluentBooking access.', 'fluent-booking') |
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); |
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} |
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|
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return true; |
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} |
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|
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/** |
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* The stored MCP settings, defaults merged in. |
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* |
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* @param bool $cached |
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* @return array |
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*/ |
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public static function getSettings($cached = true) |
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{ |
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static $settings = null; |
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static $forBlog = null; |
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|
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// Keyed by blog, in case a multisite request switches sites. |
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$blogId = function_exists('get_current_blog_id') ? get_current_blog_id() : 0; |
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|
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if ($cached && $settings !== null && $forBlog === $blogId) { |
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return $settings; |
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} |
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|
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$forBlog = $blogId; |
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|
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$stored = get_option(self::OPTION_KEY, []); |
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|
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if (!is_array($stored)) { |
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$stored = []; |
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} |
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|
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$settings = [ |
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'enabled' => Arr::get($stored, 'enabled') === 'yes' ? 'yes' : 'no', |
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'toolsets' => self::sanitizeToolsets(Arr::get($stored, 'toolsets', [])), |
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]; |
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|
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return $settings; |
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} |
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|
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/** |
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* The master switch. Off by default. |
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* |
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* @return bool |
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*/ |
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public static function isEnabled() |
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{ |
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$settings = self::getSettings(); |
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|
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return Arr::get($settings, 'enabled') === 'yes'; |
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} |
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|
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/** |
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* Persist the master switch. |
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* |
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* The capability is re-checked here even though callers sit behind |
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* SettingsPolicy, because the FluentToolkit toggle path delegates auth to |
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* another plugin. `manage_options`, not is_super_admin: it's a per-site option. |
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* |
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* @param bool $enabled |
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* @return bool the persisted state |
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*/ |
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public static function setEnabled($enabled) |
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{ |
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if (!current_user_can('manage_options')) { |
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return self::isEnabled(); |
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} |
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|
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return self::saveSettings(['enabled' => $enabled ? 'yes' : 'no']); |
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} |
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|
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/** |
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* Toolsets currently exposed. Always includes `core`. |
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* |
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* @return array |
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*/ |
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public static function enabledToolsets() |
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{ |
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$settings = self::getSettings(); |
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|
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return self::sanitizeToolsets(Arr::get($settings, 'toolsets', [])); |
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} |
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|
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/** |
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* @param string $toolset |
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* @return bool |
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*/ |
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public static function isToolsetEnabled($toolset) |
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{ |
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return in_array($toolset, self::enabledToolsets(), true); |
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} |
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|
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/** |
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* Persist toolset selection. |
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* |
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* @param array $toolsets |
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* @return array the persisted toolsets |
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*/ |
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public static function setToolsets($toolsets) |
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{ |
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if (!current_user_can('manage_options')) { |
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return self::enabledToolsets(); |
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} |
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|
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self::saveSettings(['toolsets' => self::sanitizeToolsets($toolsets)]); |
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|
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return self::enabledToolsets(); |
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} |
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|
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/** |
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* Every toolset the server knows about, with its label. `payments` is only |
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* offered when Pro is active. |
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* |
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* @return array keyed by toolset slug |
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*/ |
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public static function availableToolsets() |
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{ |
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$toolsets = [ |
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self::TOOLSET_CORE => [ |
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'label' => __('Core', 'fluent-booking'), |
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'description' => __('Bookings, availability, event types, diagnostics and reporting. Always on.', 'fluent-booking'), |
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'locked' => true, |
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], |
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self::TOOLSET_SCHEDULING => [ |
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'label' => __('Scheduling setup', 'fluent-booking'), |
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'description' => __('Let the agent create and edit event types and availability schedules.', 'fluent-booking'), |
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'locked' => false, |
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], |
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]; |
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|
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if (defined('FLUENT_BOOKING_PRO_DIR_FILE')) { |
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$toolsets[self::TOOLSET_PAYMENTS] = [ |
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'label' => __('Payments', 'fluent-booking'), |
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'description' => __('Let the agent read booking orders and transactions.', 'fluent-booking'), |
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'locked' => false, |
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]; |
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} |
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|
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return $toolsets; |
| 424 |
} |
| 425 |
|
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/** |
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* Coerce a toolset list to known slugs, always including `core`. |
| 428 |
* |
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* @param mixed $toolsets |
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* @return array |
| 431 |
*/ |
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private static function sanitizeToolsets($toolsets) |
| 433 |
{ |
| 434 |
if (!is_array($toolsets)) { |
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$toolsets = []; |
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} |
| 437 |
|
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$known = [self::TOOLSET_CORE, self::TOOLSET_SCHEDULING, self::TOOLSET_PAYMENTS]; |
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|
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$toolsets = array_values(array_intersect($known, array_map('sanitize_text_field', $toolsets))); |
| 441 |
|
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if (!in_array(self::TOOLSET_CORE, $toolsets, true)) { |
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array_unshift($toolsets, self::TOOLSET_CORE); |
| 444 |
} |
| 445 |
|
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return $toolsets; |
| 447 |
} |
| 448 |
|
| 449 |
/** |
| 450 |
* Merge-write into the option so setEnabled() and setToolsets() cannot |
| 451 |
* clobber each other, then bust the static cache. |
| 452 |
* |
| 453 |
* @param array $changes |
| 454 |
* @return bool the persisted enabled state |
| 455 |
*/ |
| 456 |
private static function saveSettings($changes) |
| 457 |
{ |
| 458 |
$current = self::getSettings(false); |
| 459 |
|
| 460 |
update_option(self::OPTION_KEY, array_merge($current, (array) $changes), true); |
| 461 |
|
| 462 |
$settings = self::getSettings(false); |
| 463 |
|
| 464 |
return Arr::get($settings, 'enabled') === 'yes'; |
| 465 |
} |
| 466 |
} |
| 467 |
|
