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| 1 | <?php |
| 2 | /** |
| 3 | * Jetpack Monitor Abilities Registration |
| 4 | * |
| 5 | * Registers Jetpack Downtime Monitor abilities with the WordPress Abilities API. |
| 6 | * |
| 7 | * @package automattic/jetpack |
| 8 | */ |
| 9 | |
| 10 | namespace Automattic\Jetpack\Plugin\Abilities; |
| 11 | |
| 12 | use Automattic\Jetpack\Connection\Manager as Connection_Manager; |
| 13 | use Automattic\Jetpack\WP_Abilities\Registrar; |
| 14 | use Jetpack; |
| 15 | use Jetpack_IXR_Client; |
| 16 | |
| 17 | if ( ! defined( 'ABSPATH' ) ) { |
| 18 | exit( 0 ); |
| 19 | } |
| 20 | |
| 21 | /** |
| 22 | * Registers Jetpack Downtime Monitor abilities with the WordPress Abilities API. |
| 23 | * |
| 24 | * Exposes a zero-arg overview read (`get-monitor-status`) and a declarative |
| 25 | * state-setter (`set-notifications`) so AI agents can inspect and configure the |
| 26 | * site's Downtime Monitor through the standard `wp-abilities/v1` REST surface. |
| 27 | */ |
| 28 | class Monitor_Abilities extends Registrar { |
| 29 | |
| 30 | private const MODULE_SLUG = 'monitor'; |
| 31 | |
| 32 | /** |
| 33 | * {@inheritDoc} |
| 34 | * |
| 35 | * Monitor abilities live under the WordPress core `site` category — it is |
| 36 | * registered by the Abilities API itself, so we reference it by slug and |
| 37 | * never register it ourselves (see the no-op `register_category()` below). |
| 38 | */ |
| 39 | public static function get_category_slug(): string { |
| 40 | return 'site'; |
| 41 | } |
| 42 | |
| 43 | /** |
| 44 | * {@inheritDoc} |
| 45 | * |
| 46 | * Unused: the `site` category is owned by WordPress core, so |
| 47 | * `register_category()` is a no-op and this definition is never passed to |
| 48 | * `wp_register_ability_category()`. It remains only to satisfy the abstract |
| 49 | * Registrar contract. |
| 50 | */ |
| 51 | public static function get_category_definition(): array { |
| 52 | return array(); |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * No-op: the `site` ability category is registered by the WordPress core |
| 57 | * Abilities API. Re-registering it here would clobber the core definition, |
| 58 | * so this registrar only references the category by slug. |
| 59 | * |
| 60 | * @return void |
| 61 | */ |
| 62 | public static function register_category() {} |
| 63 | |
| 64 | /** |
| 65 | * {@inheritDoc} |
| 66 | */ |
| 67 | public static function get_abilities(): array { |
| 68 | return array( |
| 69 | 'jetpack-monitor/get-monitor-status' => array( |
| 70 | 'label' => __( 'Get Jetpack Monitor status', 'jetpack' ), |
| 71 | 'description' => __( 'Return the current Downtime Monitor state as { module_active, user_connected, notifications_enabled, last_status_change }. notifications_enabled is a boolean (does the current user receive downtime alerts). last_status_change is the timestamp of the most recent up/down status transition recorded by the Monitor service, as a "YYYY-MM-DD HH:mm:ss" UTC string, or null when no transition has been recorded — this reflects the legacy last_status_change projection, not necessarily the last time downtime began. Fails with jetpack_monitor_not_connected when the current user is not connected to Jetpack (connect first via the My Jetpack admin page), or jetpack_monitor_service_unreachable when the remote Monitor service cannot be reached. These abilities are only registered while the Monitor module is active; if they are absent from wp_get_abilities(), activate the Monitor module first.', 'jetpack' ), |
| 72 | 'input_schema' => array( |
| 73 | 'type' => 'object', |
| 74 | 'additionalProperties' => false, |
| 75 | ), |
| 76 | 'output_schema' => array( |
| 77 | 'type' => 'object', |
| 78 | 'properties' => array( |
| 79 | 'module_active' => array( 'type' => 'boolean' ), |
| 80 | 'user_connected' => array( 'type' => 'boolean' ), |
| 81 | 'notifications_enabled' => array( 'type' => 'boolean' ), |
| 82 | 'last_status_change' => array( 'type' => array( 'string', 'null' ) ), |
| 83 | ), |
| 84 | ), |
| 85 | 'execute_callback' => array( __CLASS__, 'get_monitor_status' ), |
| 86 | 'permission_callback' => array( __CLASS__, 'can_view_monitor' ), |
| 87 | 'meta' => array( |
| 88 | 'annotations' => array( |
| 89 | 'readonly' => true, |
| 90 | 'destructive' => false, |
| 91 | 'idempotent' => true, |
| 92 | ), |
| 93 | 'show_in_rest' => true, |
| 94 | 'mcp' => array( |
| 95 | 'public' => true, |
| 96 | 'type' => 'tool', |
| 97 | ), |
| 98 | ), |
| 99 | ), |
| 100 | |
| 101 | 'jetpack-monitor/set-notifications' => array( |
| 102 | 'label' => __( 'Set Jetpack Monitor notifications', 'jetpack' ), |
| 103 | 'description' => __( 'Enable or disable downtime email notifications for the current user. Idempotent — setting the state to the current value returns changed=false. Returns { enabled, changed }. Preconditions: the Monitor module must be active and the current user must be connected to Jetpack; call jetpack-monitor/get-monitor-status first to verify the connection. Fails with jetpack_monitor_module_inactive (activate the Monitor module first — these abilities are only registered while the module is active, so this error indicates a race) or jetpack_monitor_not_connected when preconditions are not met.', 'jetpack' ), |
| 104 | 'input_schema' => array( |
| 105 | 'type' => 'object', |
| 106 | 'required' => array( 'enabled' ), |
| 107 | 'properties' => array( |
| 108 | 'enabled' => array( |
| 109 | 'type' => 'boolean', |
| 110 | 'description' => __( 'Desired notification state. true enables downtime email notifications for the current user; false disables them.', 'jetpack' ), |
| 111 | ), |
| 112 | ), |
| 113 | 'additionalProperties' => false, |
| 114 | ), |
| 115 | 'output_schema' => array( |
| 116 | 'type' => 'object', |
| 117 | 'properties' => array( |
| 118 | 'enabled' => array( 'type' => 'boolean' ), |
| 119 | 'changed' => array( 'type' => 'boolean' ), |
| 120 | ), |
| 121 | ), |
| 122 | 'execute_callback' => array( __CLASS__, 'set_notifications' ), |
| 123 | 'permission_callback' => array( __CLASS__, 'can_manage_monitor' ), |
| 124 | 'meta' => array( |
| 125 | 'annotations' => array( |
| 126 | 'readonly' => false, |
| 127 | 'destructive' => false, |
| 128 | 'idempotent' => true, |
| 129 | ), |
| 130 | 'show_in_rest' => true, |
| 131 | 'mcp' => array( |
| 132 | 'public' => true, |
| 133 | 'type' => 'tool', |
| 134 | ), |
| 135 | ), |
| 136 | ), |
| 137 | ); |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * Permission check: can the current user read Monitor status? |
| 142 | */ |
| 143 | public static function can_view_monitor(): bool { |
| 144 | return current_user_can( 'jetpack_admin_page' ); |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Permission check: can the current user manage Monitor notifications? |
| 149 | * |
| 150 | * Notifications are a per-user preference that affects the caller's own inbox, |
| 151 | * so `jetpack_admin_page` (the same capability that gates the admin settings UI) |
| 152 | * is the right gate — no stricter cap is warranted. |
| 153 | */ |
| 154 | public static function can_manage_monitor(): bool { |
| 155 | return current_user_can( 'jetpack_admin_page' ); |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Execute: overview read. Returns the full |
| 160 | * `{ module_active, user_connected, notifications_enabled, last_status_change }` |
| 161 | * shape on the happy path. Surfaces precondition and transport failures as |
| 162 | * `WP_Error` so callers (especially AI agents) get an actionable next step |
| 163 | * instead of opaque null fields: |
| 164 | * |
| 165 | * - `jetpack_monitor_module_inactive` — Monitor module is not active. |
| 166 | * Defensive: in practice this is unreachable because the abilities are |
| 167 | * only registered while the module is active. |
| 168 | * - `jetpack_monitor_not_connected` — the current user is not connected to |
| 169 | * Jetpack; the remote read needs the user's token. Steers the caller to |
| 170 | * the My Jetpack admin page to connect. |
| 171 | * - `jetpack_monitor_service_unreachable` — the remote Monitor service |
| 172 | * returned an error for one of the two underlying XML-RPC reads |
| 173 | * (`isUserInNotifications` or `getLastDowntime`). Transient — retry later. |
| 174 | * |
| 175 | * `last_status_change` remains `null` on the happy path when no up/down |
| 176 | * transition has been recorded yet; that is the documented "no data yet" |
| 177 | * signal, not a failure. |
| 178 | * |
| 179 | * @param array|null $input Ability input (no parameters accepted). |
| 180 | * @return array|\WP_Error |
| 181 | */ |
| 182 | public static function get_monitor_status( $input = null ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- Abilities API contract requires execute callbacks to accept the input array even when the schema declares no parameters. |
| 183 | $module_active = Jetpack::is_module_active( self::MODULE_SLUG ); |
| 184 | $user_connected = static::is_user_connected_to_jetpack(); |
| 185 | |
| 186 | if ( ! $module_active ) { |
| 187 | return new \WP_Error( |
| 188 | 'jetpack_monitor_module_inactive', |
| 189 | __( 'The Monitor module is not active. Activate it before reading Monitor status.', 'jetpack' ) |
| 190 | ); |
| 191 | } |
| 192 | |
| 193 | if ( ! $user_connected ) { |
| 194 | return new \WP_Error( |
| 195 | 'jetpack_monitor_not_connected', |
| 196 | __( 'User is not connected to Jetpack. Connect first via the My Jetpack admin page, then retry this ability.', 'jetpack' ) |
| 197 | ); |
| 198 | } |
| 199 | |
| 200 | $state = static::fetch_notifications_state(); |
| 201 | if ( is_wp_error( $state ) ) { |
| 202 | return new \WP_Error( |
| 203 | 'jetpack_monitor_service_unreachable', |
| 204 | __( 'The remote Jetpack Monitor service is unreachable. Retry shortly; this is typically transient.', 'jetpack' ), |
| 205 | array( 'underlying' => $state->get_error_code() ) |
| 206 | ); |
| 207 | } |
| 208 | |
| 209 | $status_change = static::fetch_last_status_change(); |
| 210 | if ( is_wp_error( $status_change ) ) { |
| 211 | return new \WP_Error( |
| 212 | 'jetpack_monitor_service_unreachable', |
| 213 | __( 'The remote Jetpack Monitor service is unreachable. Retry shortly; this is typically transient.', 'jetpack' ), |
| 214 | array( 'underlying' => $status_change->get_error_code() ) |
| 215 | ); |
| 216 | } |
| 217 | |
| 218 | return array( |
| 219 | 'module_active' => $module_active, |
| 220 | 'user_connected' => $user_connected, |
| 221 | 'notifications_enabled' => (bool) $state, |
| 222 | 'last_status_change' => $status_change, |
| 223 | ); |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * Execute: declarative state-setter. Idempotent — compares desired vs current |
| 228 | * and returns changed=false when they match. Either way the local |
| 229 | * `monitor_receive_notifications` option is synced to the remote value (after |
| 230 | * the write on a change, and on the no-op path) so the legacy REST reader, |
| 231 | * which trusts that option first, never reports a stale state. |
| 232 | * |
| 233 | * @param array|null $input Input matching the ability's input_schema. |
| 234 | * @return array|\WP_Error |
| 235 | */ |
| 236 | public static function set_notifications( $input = null ) { |
| 237 | $input = is_array( $input ) ? $input : array(); |
| 238 | |
| 239 | if ( ! array_key_exists( 'enabled', $input ) ) { |
| 240 | return new \WP_Error( |
| 241 | 'jetpack_monitor_missing_enabled', |
| 242 | __( 'A desired enabled state (boolean) is required.', 'jetpack' ) |
| 243 | ); |
| 244 | } |
| 245 | if ( ! is_bool( $input['enabled'] ) ) { |
| 246 | return new \WP_Error( |
| 247 | 'jetpack_monitor_invalid_enabled', |
| 248 | __( 'The enabled parameter must be a boolean. Strings like "true" / "false" are not accepted.', 'jetpack' ) |
| 249 | ); |
| 250 | } |
| 251 | |
| 252 | if ( ! Jetpack::is_module_active( self::MODULE_SLUG ) ) { |
| 253 | return new \WP_Error( |
| 254 | 'jetpack_monitor_module_inactive', |
| 255 | __( 'The Monitor module is not active. Activate it before configuring notifications.', 'jetpack' ) |
| 256 | ); |
| 257 | } |
| 258 | |
| 259 | if ( ! static::is_user_connected_to_jetpack() ) { |
| 260 | return new \WP_Error( |
| 261 | 'jetpack_monitor_not_connected', |
| 262 | __( 'The current user is not connected to Jetpack. Connect the user to Jetpack before configuring Monitor notifications.', 'jetpack' ) |
| 263 | ); |
| 264 | } |
| 265 | |
| 266 | $desired = $input['enabled']; |
| 267 | $current = static::fetch_notifications_state(); |
| 268 | if ( is_wp_error( $current ) ) { |
| 269 | return $current; |
| 270 | } |
| 271 | |
| 272 | if ( $desired === $current ) { |
| 273 | // Sync the local `monitor_receive_notifications` option to the |
| 274 | // known-good remote value even on a no-op. The legacy |
| 275 | // `Jetpack_Core_Json_Api_Endpoints::get_remote_value` reader trusts |
| 276 | // this option before falling back to a remote read, so a stale local |
| 277 | // value would let it report the wrong state. The changed=true path |
| 278 | // below mirrors the option after a write; mirroring here keeps the |
| 279 | // unchanged path self-healing too. |
| 280 | update_option( 'monitor_receive_notifications', $current ); |
| 281 | |
| 282 | return array( |
| 283 | 'enabled' => $current, |
| 284 | 'changed' => false, |
| 285 | ); |
| 286 | } |
| 287 | |
| 288 | $applied = static::apply_notifications_update( $desired ); |
| 289 | if ( is_wp_error( $applied ) ) { |
| 290 | return $applied; |
| 291 | } |
| 292 | |
| 293 | // Mirror the write to the `monitor_receive_notifications` option so the |
| 294 | // legacy `Jetpack_Core_Json_Api_Endpoints::get_remote_value` reader — the |
| 295 | // only other reader of this option — stays in sync with the remote state. |
| 296 | update_option( 'monitor_receive_notifications', $desired ); |
| 297 | |
| 298 | return array( |
| 299 | 'enabled' => $desired, |
| 300 | 'changed' => true, |
| 301 | ); |
| 302 | } |
| 303 | |
| 304 | /** |
| 305 | * Whether the current user is connected to Jetpack. |
| 306 | * |
| 307 | * Extracted as a protected seam so tests can override the connection check |
| 308 | * without standing up a full Jetpack token fixture. |
| 309 | */ |
| 310 | protected static function is_user_connected_to_jetpack(): bool { |
| 311 | return ( new Connection_Manager( 'jetpack' ) )->is_user_connected(); |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * Send the IXR `jetpack.monitor.setNotifications` request to apply the |
| 316 | * desired state on the remote Monitor service. |
| 317 | * |
| 318 | * @param bool $enabled Desired notification state. |
| 319 | * @return true|\WP_Error True on success, WP_Error on remote failure. |
| 320 | */ |
| 321 | protected static function apply_notifications_update( bool $enabled ) { |
| 322 | $xml = new Jetpack_IXR_Client( array( 'user_id' => get_current_user_id() ) ); |
| 323 | $xml->query( 'jetpack.monitor.setNotifications', $enabled ); |
| 324 | if ( $xml->isError() ) { |
| 325 | return new \WP_Error( |
| 326 | 'jetpack_monitor_notifications_update_failed', |
| 327 | sprintf( '%s: %s', $xml->getErrorCode(), $xml->getErrorMessage() ) |
| 328 | ); |
| 329 | } |
| 330 | return true; |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * Fetch the current notifications state from the remote Monitor service. |
| 335 | * |
| 336 | * @return bool|\WP_Error Boolean preference when the remote call succeeds, |
| 337 | * WP_Error when the remote call fails. |
| 338 | */ |
| 339 | protected static function fetch_notifications_state() { |
| 340 | $xml = new Jetpack_IXR_Client( array( 'user_id' => get_current_user_id() ) ); |
| 341 | $xml->query( 'jetpack.monitor.isUserInNotifications' ); |
| 342 | if ( $xml->isError() ) { |
| 343 | return new \WP_Error( |
| 344 | 'jetpack_monitor_notifications_data_unavailable', |
| 345 | sprintf( '%s: %s', $xml->getErrorCode(), $xml->getErrorMessage() ) |
| 346 | ); |
| 347 | } |
| 348 | return (bool) $xml->getResponse(); |
| 349 | } |
| 350 | |
| 351 | /** |
| 352 | * Fetch the last up/down status-change timestamp from the remote Monitor |
| 353 | * service, reusing the same transient key and 10-minute TTL written by the |
| 354 | * legacy module. |
| 355 | * |
| 356 | * The remote `jetpack.monitor.getLastDowntime` XML-RPC method returns the |
| 357 | * legacy `last_status_change` projection — the time of the most recent |
| 358 | * up/down transition, not strictly when downtime began. The transient key |
| 359 | * stays `monitor_last_downtime` because that is what the legacy module |
| 360 | * writes and we share its cache. |
| 361 | * |
| 362 | * @return string|null|\WP_Error YYYY-MM-DD HH:mm:ss string, null when no |
| 363 | * transition has been recorded, or WP_Error |
| 364 | * on a remote failure. |
| 365 | */ |
| 366 | protected static function fetch_last_status_change() { |
| 367 | $cached = get_transient( 'monitor_last_downtime' ); |
| 368 | if ( false !== $cached ) { |
| 369 | return self::normalize_last_status_change( $cached ); |
| 370 | } |
| 371 | |
| 372 | $xml = new Jetpack_IXR_Client(); |
| 373 | $xml->query( 'jetpack.monitor.getLastDowntime' ); |
| 374 | if ( $xml->isError() ) { |
| 375 | return new \WP_Error( |
| 376 | 'jetpack_monitor_downtime_data_unavailable', |
| 377 | sprintf( '%s: %s', $xml->getErrorCode(), $xml->getErrorMessage() ) |
| 378 | ); |
| 379 | } |
| 380 | |
| 381 | $response = $xml->getResponse(); |
| 382 | set_transient( 'monitor_last_downtime', $response, 10 * MINUTE_IN_SECONDS ); |
| 383 | return self::normalize_last_status_change( $response ); |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * Normalize a `last_status_change` value into the documented contract: |
| 388 | * a `YYYY-MM-DD HH:mm:ss` UTC string, or `null` for "no transition yet". |
| 389 | * |
| 390 | * Jetpack Monitor v1 returns an empty string when no transition has been |
| 391 | * recorded; Monitor v2 may instead surface a MySQL zero-date |
| 392 | * (`0000-00-00 00:00:00`) or some other sentinel. Collapse every "no value" |
| 393 | * representation to `null` so the ability's `null` contract stays stable |
| 394 | * regardless of which backend is active. |
| 395 | * |
| 396 | * @param mixed $value Raw remote/cached value. |
| 397 | * @return string|null Pass-through timestamp string, or null when absent. |
| 398 | */ |
| 399 | protected static function normalize_last_status_change( $value ) { |
| 400 | if ( ! is_string( $value ) ) { |
| 401 | return null; |
| 402 | } |
| 403 | |
| 404 | $value = trim( $value ); |
| 405 | if ( '' === $value || 0 === strncmp( $value, '0000-00-00', 10 ) ) { |
| 406 | return null; |
| 407 | } |
| 408 | |
| 409 | $ts = strtotime( $value ); |
| 410 | if ( false === $ts || $ts <= 0 ) { |
| 411 | return null; |
| 412 | } |
| 413 | |
| 414 | return $value; |
| 415 | } |
| 416 | } |