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| 1 | <?php |
| 2 | /** |
| 3 | * The Activity Log REST Controller. |
| 4 | * |
| 5 | * Registers the `/jetpack/v4/activity-log/*` routes backing the admin |
| 6 | * UI. Each route is a thin proxy to the corresponding WPCOM v2 |
| 7 | * endpoint, authenticated with the site's blog token. |
| 8 | * |
| 9 | * @package automattic/jetpack-activity-log |
| 10 | */ |
| 11 | |
| 12 | namespace Automattic\Jetpack\Activity_Log; |
| 13 | |
| 14 | use Automattic\Jetpack\Connection\Client; |
| 15 | use Automattic\Jetpack\Connection\Manager as Connection_Manager; |
| 16 | use Automattic\Jetpack\Status\Visitor; |
| 17 | use Jetpack_Options; |
| 18 | use WP_Error; |
| 19 | use WP_REST_Request; |
| 20 | use WP_REST_Server; |
| 21 | use function current_user_can; |
| 22 | use function delete_site_transient; |
| 23 | use function esc_html__; |
| 24 | use function get_site_transient; |
| 25 | use function http_build_query; |
| 26 | use function is_wp_error; |
| 27 | use function json_decode; |
| 28 | use function register_rest_route; |
| 29 | use function rest_ensure_response; |
| 30 | use function set_site_transient; |
| 31 | use function wp_remote_retrieve_body; |
| 32 | use function wp_remote_retrieve_response_code; |
| 33 | |
| 34 | /** |
| 35 | * REST routes for the Activity Log UI. |
| 36 | */ |
| 37 | class REST_Controller { |
| 38 | |
| 39 | /** |
| 40 | * REST namespace used by this package. |
| 41 | * |
| 42 | * @var string |
| 43 | */ |
| 44 | const REST_NAMESPACE = 'jetpack/v4'; |
| 45 | |
| 46 | /** |
| 47 | * Max items returned per request on the free tier. Matches the "20 most |
| 48 | * recent events" copy used by Calypso's upsell callout. |
| 49 | * |
| 50 | * @var int |
| 51 | */ |
| 52 | const FREE_TIER_ITEM_CAP = 20; |
| 53 | |
| 54 | /** |
| 55 | * Site-transient TTL for the has-access capability check. |
| 56 | * |
| 57 | * @var int |
| 58 | */ |
| 59 | const CAPABILITY_CACHE_TTL = 5 * MINUTE_IN_SECONDS; |
| 60 | |
| 61 | /** |
| 62 | * Transient key prefix for the per-blog access cache. |
| 63 | * |
| 64 | * @var string |
| 65 | */ |
| 66 | const CAPABILITY_CACHE_KEY = 'jetpack_activity_log_has_access_'; |
| 67 | |
| 68 | /** |
| 69 | * Query params accepted by the list endpoint. Shape matches Calypso's |
| 70 | * ActivityLogParams so the ported UI can forward its filter state |
| 71 | * verbatim. |
| 72 | * |
| 73 | * @return array |
| 74 | */ |
| 75 | private static function list_args() { |
| 76 | return array( |
| 77 | 'number' => array( |
| 78 | 'description' => __( 'Number of items to return per page.', 'jetpack-activity-log' ), |
| 79 | 'type' => 'integer', |
| 80 | 'minimum' => 1, |
| 81 | 'maximum' => 1000, |
| 82 | ), |
| 83 | 'page' => array( |
| 84 | 'description' => __( '1-indexed page number.', 'jetpack-activity-log' ), |
| 85 | 'type' => 'integer', |
| 86 | 'minimum' => 1, |
| 87 | ), |
| 88 | 'sort_order' => array( |
| 89 | 'description' => __( 'Sort direction.', 'jetpack-activity-log' ), |
| 90 | 'type' => 'string', |
| 91 | 'enum' => array( 'asc', 'desc' ), |
| 92 | ), |
| 93 | 'after' => array( |
| 94 | 'description' => __( 'ISO 8601 lower bound on event timestamp.', 'jetpack-activity-log' ), |
| 95 | 'type' => 'string', |
| 96 | 'format' => 'date-time', |
| 97 | ), |
| 98 | 'before' => array( |
| 99 | 'description' => __( 'ISO 8601 upper bound on event timestamp.', 'jetpack-activity-log' ), |
| 100 | 'type' => 'string', |
| 101 | 'format' => 'date-time', |
| 102 | ), |
| 103 | 'group' => array( |
| 104 | 'description' => __( 'Only return events in these groups.', 'jetpack-activity-log' ), |
| 105 | 'type' => 'array', |
| 106 | 'items' => array( 'type' => 'string' ), |
| 107 | ), |
| 108 | 'not_group' => array( |
| 109 | 'description' => __( 'Exclude events in these groups.', 'jetpack-activity-log' ), |
| 110 | 'type' => 'array', |
| 111 | 'items' => array( 'type' => 'string' ), |
| 112 | ), |
| 113 | 'text_search' => array( |
| 114 | 'description' => __( 'Full-text search string.', 'jetpack-activity-log' ), |
| 115 | 'type' => 'string', |
| 116 | ), |
| 117 | 'actor' => array( |
| 118 | 'description' => __( 'Only return events performed by these actor IDs.', 'jetpack-activity-log' ), |
| 119 | 'type' => 'array', |
| 120 | 'items' => array( 'type' => 'string' ), |
| 121 | ), |
| 122 | ); |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * Query params accepted by the actors endpoint. Same date window as the |
| 127 | * counts endpoint (no pagination, no sort, no filters) — we just want |
| 128 | * the distinct set for the "Performed by" dropdown. |
| 129 | * |
| 130 | * @return array |
| 131 | */ |
| 132 | private static function actors_args() { |
| 133 | return array( |
| 134 | 'number' => array( |
| 135 | 'description' => __( 'Cap on the number of events considered when collecting actors.', 'jetpack-activity-log' ), |
| 136 | 'type' => 'integer', |
| 137 | 'minimum' => 1, |
| 138 | 'maximum' => 1000, |
| 139 | ), |
| 140 | 'after' => array( |
| 141 | 'description' => __( 'ISO 8601 lower bound on event timestamp.', 'jetpack-activity-log' ), |
| 142 | 'type' => 'string', |
| 143 | 'format' => 'date-time', |
| 144 | ), |
| 145 | 'before' => array( |
| 146 | 'description' => __( 'ISO 8601 upper bound on event timestamp.', 'jetpack-activity-log' ), |
| 147 | 'type' => 'string', |
| 148 | 'format' => 'date-time', |
| 149 | ), |
| 150 | ); |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Query params accepted by the group-counts endpoint. A subset of the |
| 155 | * list params — no pagination or sort, no text search. |
| 156 | * |
| 157 | * @return array |
| 158 | */ |
| 159 | private static function group_counts_args() { |
| 160 | return array( |
| 161 | 'number' => array( |
| 162 | 'description' => __( 'Cap on the number of events considered when counting groups.', 'jetpack-activity-log' ), |
| 163 | 'type' => 'integer', |
| 164 | 'minimum' => 1, |
| 165 | 'maximum' => 1000, |
| 166 | ), |
| 167 | 'after' => array( |
| 168 | 'description' => __( 'ISO 8601 lower bound on event timestamp.', 'jetpack-activity-log' ), |
| 169 | 'type' => 'string', |
| 170 | 'format' => 'date-time', |
| 171 | ), |
| 172 | 'before' => array( |
| 173 | 'description' => __( 'ISO 8601 upper bound on event timestamp.', 'jetpack-activity-log' ), |
| 174 | 'type' => 'string', |
| 175 | 'format' => 'date-time', |
| 176 | ), |
| 177 | 'group' => array( |
| 178 | 'description' => __( 'Only count events in these groups.', 'jetpack-activity-log' ), |
| 179 | 'type' => 'array', |
| 180 | 'items' => array( 'type' => 'string' ), |
| 181 | ), |
| 182 | 'not_group' => array( |
| 183 | 'description' => __( 'Exclude events in these groups.', 'jetpack-activity-log' ), |
| 184 | 'type' => 'array', |
| 185 | 'items' => array( 'type' => 'string' ), |
| 186 | ), |
| 187 | ); |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * Register the Activity Log REST routes. |
| 192 | * |
| 193 | * Hooked on `rest_api_init` by {@see Jetpack_Activity_Log::initialize()}. |
| 194 | */ |
| 195 | public static function register_rest_routes() { |
| 196 | register_rest_route( |
| 197 | self::REST_NAMESPACE, |
| 198 | '/activity-log', |
| 199 | array( |
| 200 | 'methods' => WP_REST_Server::READABLE, |
| 201 | 'callback' => array( __CLASS__, 'get_activity_log' ), |
| 202 | 'permission_callback' => array( __CLASS__, 'permissions_callback' ), |
| 203 | 'args' => self::list_args(), |
| 204 | ) |
| 205 | ); |
| 206 | |
| 207 | register_rest_route( |
| 208 | self::REST_NAMESPACE, |
| 209 | '/activity-log/count/group', |
| 210 | array( |
| 211 | 'methods' => WP_REST_Server::READABLE, |
| 212 | 'callback' => array( __CLASS__, 'get_activity_log_group_counts' ), |
| 213 | 'permission_callback' => array( __CLASS__, 'permissions_callback' ), |
| 214 | 'args' => self::group_counts_args(), |
| 215 | ) |
| 216 | ); |
| 217 | |
| 218 | register_rest_route( |
| 219 | self::REST_NAMESPACE, |
| 220 | '/activity-log/actors', |
| 221 | array( |
| 222 | 'methods' => WP_REST_Server::READABLE, |
| 223 | 'callback' => array( __CLASS__, 'get_activity_log_actors' ), |
| 224 | 'permission_callback' => array( __CLASS__, 'permissions_callback' ), |
| 225 | 'args' => self::actors_args(), |
| 226 | ) |
| 227 | ); |
| 228 | } |
| 229 | |
| 230 | /** |
| 231 | * Permission callback. Mirrors the menu gating — any admin on a |
| 232 | * non-multisite install with a user-level WPCOM connection can read |
| 233 | * the log. A user-level connection is required because the upstream |
| 234 | * WPCOM endpoint is user-gated (it needs to identify *which* admin |
| 235 | * is asking); signing as the blog gets rejected with "Only |
| 236 | * Administrators can query information about the current site." |
| 237 | * |
| 238 | * @return bool|WP_Error |
| 239 | */ |
| 240 | public static function permissions_callback() { |
| 241 | if ( ! current_user_can( 'manage_options' ) ) { |
| 242 | return false; |
| 243 | } |
| 244 | |
| 245 | if ( ! ( new Connection_Manager() )->is_user_connected() ) { |
| 246 | return new WP_Error( |
| 247 | 'activity_log_user_not_connected', |
| 248 | esc_html__( 'Your WordPress.com account is not connected to this site. Connect it to use the Activity Log.', 'jetpack-activity-log' ), |
| 249 | array( 'status' => 403 ) |
| 250 | ); |
| 251 | } |
| 252 | |
| 253 | return true; |
| 254 | } |
| 255 | |
| 256 | /** |
| 257 | * Whether the site's current plan unlocks the full activity log. |
| 258 | * |
| 259 | * Checks the WPCOM `/sites/{id}/features` endpoint for the |
| 260 | * `full-activity-log` feature flag and caches the boolean for |
| 261 | * {@see self::CAPABILITY_CACHE_TTL} seconds in a site transient so the |
| 262 | * list endpoint doesn't pay the round-trip on every pagination page. |
| 263 | * The cache is per-blog (fine for multisite) and keyed on `blog_id`. |
| 264 | * |
| 265 | * Checking the feature flag (rather than a specific plan slug or the |
| 266 | * rewind state) means Jetpack Complete, Security, Personal, and all |
| 267 | * standalone Backup plans are covered correctly, regardless of whether |
| 268 | * backup credentials have been configured. |
| 269 | * |
| 270 | * @return bool True when the site has the full-activity-log feature. |
| 271 | */ |
| 272 | public static function has_activity_logs_access() { |
| 273 | $blog_id = (int) Jetpack_Options::get_option( 'id' ); |
| 274 | if ( ! $blog_id ) { |
| 275 | return false; |
| 276 | } |
| 277 | |
| 278 | $cache_key = self::CAPABILITY_CACHE_KEY . $blog_id; |
| 279 | $cached = get_site_transient( $cache_key ); |
| 280 | if ( false !== $cached ) { |
| 281 | return 'yes' === $cached; |
| 282 | } |
| 283 | |
| 284 | $response = Client::wpcom_json_api_request_as_blog( |
| 285 | sprintf( '/sites/%d/features', $blog_id ), |
| 286 | '1.1', |
| 287 | array( 'timeout' => 2 ) |
| 288 | ); |
| 289 | |
| 290 | if ( is_wp_error( $response ) || 200 !== (int) wp_remote_retrieve_response_code( $response ) ) { |
| 291 | // Fail closed: assume no access if we can't reach WPCOM. Cache for |
| 292 | // a short window to avoid hammering the endpoint on every call. |
| 293 | set_site_transient( $cache_key, 'no', 10 ); |
| 294 | return false; |
| 295 | } |
| 296 | |
| 297 | $body = json_decode( wp_remote_retrieve_body( $response ) ); |
| 298 | $active = is_object( $body ) && isset( $body->active ) && is_array( $body->active ) ? $body->active : array(); |
| 299 | $has_it = in_array( 'full-activity-log', $active, true ); |
| 300 | set_site_transient( $cache_key, $has_it ? 'yes' : 'no', self::CAPABILITY_CACHE_TTL ); |
| 301 | return $has_it; |
| 302 | } |
| 303 | |
| 304 | /** |
| 305 | * Clear the cached has-access flag. Exposed so front-end flows that |
| 306 | * know the plan just changed (e.g. a successful checkout redirect) can |
| 307 | * force a refresh on the next request. |
| 308 | * |
| 309 | * @return void |
| 310 | */ |
| 311 | public static function clear_access_cache() { |
| 312 | $blog_id = (int) Jetpack_Options::get_option( 'id' ); |
| 313 | if ( $blog_id ) { |
| 314 | delete_site_transient( self::CAPABILITY_CACHE_KEY . $blog_id ); |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | /** |
| 319 | * Free-tier params that survive the filter strip in |
| 320 | * {@see self::get_activity_log()}. Anything outside this list is |
| 321 | * nulled out before the request reaches WPCOM. |
| 322 | * |
| 323 | * @var string[] |
| 324 | */ |
| 325 | const FREE_TIER_ALLOWED_PARAMS = array( 'number', 'page', 'sort_order' ); |
| 326 | |
| 327 | /** |
| 328 | * Proxy the paginated activity list. |
| 329 | * |
| 330 | * Enforces the free-tier boundary server-side. When the site doesn't |
| 331 | * have access: |
| 332 | * |
| 333 | * 1. `number` is clamped to {@see self::FREE_TIER_ITEM_CAP}. |
| 334 | * 2. `page` is forced to 1. |
| 335 | * 3. All filter inputs (`after`, `before`, `group`, `not_group`, |
| 336 | * `text_search`, `actor`) are dropped. |
| 337 | * |
| 338 | * Together these mean a client-side bypass (DevTools, direct |
| 339 | * `wp.apiFetch`) is bounded to "the 20 most recent events overall" — |
| 340 | * the same dataset the locked-down UI surfaces. Without (3), |
| 341 | * date-walking via `before` would let a free-tier caller page through |
| 342 | * the entire history 20 rows at a time. |
| 343 | * |
| 344 | * @param WP_REST_Request $request Request. |
| 345 | * @return mixed |
| 346 | */ |
| 347 | public static function get_activity_log( WP_REST_Request $request ) { |
| 348 | if ( ! self::has_activity_logs_access() ) { |
| 349 | // Mutating the request in-place is deliberate: any |
| 350 | // downstream `rest_request_*` filter sees the clamped |
| 351 | // values, not the caller's originals. For a security |
| 352 | // clamp that's the right side of the trade — no filter |
| 353 | // can undo the limit. |
| 354 | $requested = (int) $request->get_param( 'number' ); |
| 355 | $request->set_param( |
| 356 | 'number', |
| 357 | $requested > 0 ? min( $requested, self::FREE_TIER_ITEM_CAP ) : self::FREE_TIER_ITEM_CAP |
| 358 | ); |
| 359 | $request->set_param( 'page', 1 ); |
| 360 | |
| 361 | foreach ( array_keys( self::list_args() ) as $key ) { |
| 362 | if ( ! in_array( $key, self::FREE_TIER_ALLOWED_PARAMS, true ) ) { |
| 363 | $request->set_param( $key, null ); |
| 364 | } |
| 365 | } |
| 366 | } |
| 367 | return self::proxy_get( '/activity', $request, array_keys( self::list_args() ) ); |
| 368 | } |
| 369 | |
| 370 | /** |
| 371 | * Proxy the group-counts endpoint. |
| 372 | * |
| 373 | * Deliberately not tier-clamped — the free-tier list clamp |
| 374 | * (`number` → 20 / `page` → 1) is the security boundary; the group |
| 375 | * counts are cosmetic metadata that powers the filter dropdown. A |
| 376 | * stable, full-history count keeps the dropdown from flickering as |
| 377 | * users type in the search field, matching Calypso's behavior at |
| 378 | * `wp-calypso:client/dashboard/sites/logs-activity/dataviews/ |
| 379 | * index.tsx:100-102`. |
| 380 | * |
| 381 | * @param WP_REST_Request $request Request. |
| 382 | * @return mixed |
| 383 | */ |
| 384 | public static function get_activity_log_group_counts( WP_REST_Request $request ) { |
| 385 | return self::proxy_get( '/activity/count/group', $request, array_keys( self::group_counts_args() ) ); |
| 386 | } |
| 387 | |
| 388 | /** |
| 389 | * Proxy the actors endpoint. Returns the distinct actors that have at |
| 390 | * least one event in the requested date window — used to populate the |
| 391 | * "Performed by" filter dropdown. |
| 392 | * |
| 393 | * Tier-clamping mirrors the group-counts endpoint: the list clamp at |
| 394 | * {@see self::get_activity_log()} is the security boundary, so the |
| 395 | * actors metadata is fine to serve unconditionally. |
| 396 | * |
| 397 | * @param WP_REST_Request $request Request. |
| 398 | * @return mixed |
| 399 | */ |
| 400 | public static function get_activity_log_actors( WP_REST_Request $request ) { |
| 401 | return self::proxy_get( '/activity/actors', $request, array_keys( self::actors_args() ) ); |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * Shared helper: forward whitelisted query params from $request to the |
| 406 | * equivalent WPCOM v2 path under `/sites/{blog_id}`. |
| 407 | * |
| 408 | * @param string $wpcom_path Path relative to the site, starting with "/". |
| 409 | * @param WP_REST_Request $request Incoming request. |
| 410 | * @param array $allowed_keys Params to forward. Any unset keys are dropped. |
| 411 | * @return mixed Decoded JSON response from WPCOM, or WP_Error on failure. |
| 412 | */ |
| 413 | private static function proxy_get( $wpcom_path, WP_REST_Request $request, array $allowed_keys ) { |
| 414 | $blog_id = Jetpack_Options::get_option( 'id' ); |
| 415 | if ( ! $blog_id ) { |
| 416 | return new WP_Error( |
| 417 | 'activity_log_not_connected', |
| 418 | esc_html__( 'This site is not connected to WordPress.com.', 'jetpack-activity-log' ), |
| 419 | array( 'status' => 400 ) |
| 420 | ); |
| 421 | } |
| 422 | |
| 423 | $params = array(); |
| 424 | foreach ( $allowed_keys as $key ) { |
| 425 | $value = $request->get_param( $key ); |
| 426 | if ( $value !== null ) { |
| 427 | $params[ $key ] = $value; |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | $path = sprintf( '/sites/%d%s', (int) $blog_id, $wpcom_path ); |
| 432 | if ( ! empty( $params ) ) { |
| 433 | $path .= '?' . http_build_query( $params ); |
| 434 | } |
| 435 | |
| 436 | // Sign as the current user, not the blog: the upstream /sites/{id}/activity |
| 437 | // endpoint checks that a specific admin is asking. Forward the visitor IP |
| 438 | // so WPCOM logs match the existing /jetpack/v4/site/activity proxy. |
| 439 | $response = Client::wpcom_json_api_request_as_user( |
| 440 | $path, |
| 441 | '2', |
| 442 | array( |
| 443 | 'method' => 'GET', |
| 444 | 'headers' => array( |
| 445 | 'X-Forwarded-For' => ( new Visitor() )->get_ip( true ), |
| 446 | ), |
| 447 | ), |
| 448 | null, |
| 449 | 'wpcom' |
| 450 | ); |
| 451 | |
| 452 | if ( is_wp_error( $response ) ) { |
| 453 | return new WP_Error( |
| 454 | 'activity_log_request_failed', |
| 455 | $response->get_error_message(), |
| 456 | array( 'status' => 500 ) |
| 457 | ); |
| 458 | } |
| 459 | |
| 460 | $status = (int) wp_remote_retrieve_response_code( $response ); |
| 461 | $body = json_decode( wp_remote_retrieve_body( $response ), true ); |
| 462 | |
| 463 | if ( 200 !== $status ) { |
| 464 | return new WP_Error( |
| 465 | 'activity_log_request_failed', |
| 466 | isset( $body['message'] ) ? (string) $body['message'] : esc_html__( 'Unable to fetch activity log.', 'jetpack-activity-log' ), |
| 467 | array( 'status' => $status ? $status : 500 ) |
| 468 | ); |
| 469 | } |
| 470 | |
| 471 | return rest_ensure_response( $body ); |
| 472 | } |
| 473 | } |