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| 1 | <?php |
| 2 | /** |
| 3 | * Protect dashboard: the Scan section. |
| 4 | * |
| 5 | * @package automattic/jetpack-protect |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\Protect\Sections; |
| 9 | |
| 10 | use Automattic\Jetpack\Connection\Client; |
| 11 | use Automattic\Jetpack\Protect\Dashboard; |
| 12 | use Automattic\Jetpack\Protect\Dashboard_Section; |
| 13 | use Automattic\Jetpack\Protect\Dashboard_Threats; |
| 14 | use Automattic\Jetpack\Protect_Status\Protect_Status; |
| 15 | use Automattic\Jetpack\Protect_Status\Scan_Status; |
| 16 | use Automattic\Jetpack\Protect_Status\Status; |
| 17 | use Automattic\Jetpack\Redirect; |
| 18 | use Jetpack_Options; |
| 19 | use WP_Error; |
| 20 | use WP_REST_Request; |
| 21 | use WP_REST_Server; |
| 22 | |
| 23 | if ( ! defined( 'ABSPATH' ) ) { |
| 24 | exit( 0 ); |
| 25 | } |
| 26 | |
| 27 | /** |
| 28 | * Vulnerability results, from Scan on a paid plan or Protect's free daily check, and on-demand scans. |
| 29 | * |
| 30 | * @since 0.1.0 |
| 31 | */ |
| 32 | class Scan implements Dashboard_Section { |
| 33 | |
| 34 | /** |
| 35 | * Scan statuses that mean a scan is still running, as the Protect plugin reads them. |
| 36 | * |
| 37 | * @var string[] |
| 38 | */ |
| 39 | const SCANNING_STATUSES = array( 'provisioning', 'scheduled', 'scanning' ); |
| 40 | |
| 41 | /** |
| 42 | * How many copy variants the free-plan upsell tests. |
| 43 | * |
| 44 | * @var int |
| 45 | */ |
| 46 | const UPSELL_VARIANTS = 8; |
| 47 | |
| 48 | /** |
| 49 | * Statuses that mean the first scan has not run yet when there is no report date. |
| 50 | * |
| 51 | * @var string[] |
| 52 | */ |
| 53 | const INITIALIZING_STATUSES = array( 'idle', 'unavailable' ); |
| 54 | |
| 55 | /** |
| 56 | * Lock held for a minute after a scan request, so repeated requests don't stack. |
| 57 | * |
| 58 | * @var string |
| 59 | */ |
| 60 | const REQUEST_LOCK = 'jetpack_protect_dashboard_scan_requested'; |
| 61 | |
| 62 | /** |
| 63 | * Fixer statuses that mean a fix has finished, one way or the other. |
| 64 | * |
| 65 | * @var string[] |
| 66 | */ |
| 67 | const FIX_DONE_STATUSES = array( 'fixed', 'not_fixed' ); |
| 68 | |
| 69 | /** |
| 70 | * Transient caching Scan history, which is slow to fetch; the ignored list and the History tab share it. |
| 71 | * |
| 72 | * @var string |
| 73 | */ |
| 74 | const HISTORY_CACHE = 'jetpack_protect_dashboard_scan_history'; |
| 75 | |
| 76 | /** |
| 77 | * The largest file the dashboard shows in full, in bytes. |
| 78 | * |
| 79 | * @var int |
| 80 | */ |
| 81 | const MAX_FILE_BYTES = 512 * KB_IN_BYTES; |
| 82 | |
| 83 | /** |
| 84 | * The section key. |
| 85 | * |
| 86 | * @return string |
| 87 | */ |
| 88 | public function get_key() { |
| 89 | return 'scan'; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * The plan, where to manage or buy Scan, and the latest report. |
| 94 | * |
| 95 | * @return array |
| 96 | */ |
| 97 | public function get_state() { |
| 98 | $has_plan = Dashboard::has_scan_plan(); |
| 99 | |
| 100 | return array_merge( |
| 101 | array( |
| 102 | 'hasPlan' => $has_plan, |
| 103 | 'url' => $has_plan |
| 104 | ? Redirect::get_url( 'my-jetpack-manage-scan' ) |
| 105 | : Dashboard::get_scan_upgrade_url(), |
| 106 | ), |
| 107 | $has_plan ? array() : array( |
| 108 | 'upsellVariant' => self::get_upsell_variant(), |
| 109 | 'upsellVariantForced' => (bool) has_filter( 'jetpack_protect_dashboard_scan_upsell_variant' ), |
| 110 | ), |
| 111 | self::get_scan_report( $has_plan ) |
| 112 | ); |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Where this site's upsell copy rotation starts, spread across sites by blog ID. |
| 117 | * |
| 118 | * @return int From 1 to UPSELL_VARIANTS. |
| 119 | */ |
| 120 | public static function get_upsell_variant() { |
| 121 | $blog_id = (int) Jetpack_Options::get_option( 'id' ); |
| 122 | $variant = $blog_id > 0 ? ( $blog_id % self::UPSELL_VARIANTS ) + 1 : 1; |
| 123 | |
| 124 | /** |
| 125 | * Filters which free-plan Scan upsell copy the Protect dashboard shows; a filtered one isn't rotated. |
| 126 | * |
| 127 | * @since $$next-version$$ |
| 128 | * |
| 129 | * @param int $variant From 1 to 8. |
| 130 | */ |
| 131 | $variant = (int) apply_filters( 'jetpack_protect_dashboard_scan_upsell_variant', $variant ); |
| 132 | |
| 133 | return $variant >= 1 && $variant <= self::UPSELL_VARIANTS ? $variant : 1; |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * Register `jetpack/v4/protect-dashboard/scan`. |
| 138 | * |
| 139 | * @return void |
| 140 | */ |
| 141 | public function register_routes() { |
| 142 | register_rest_route( |
| 143 | 'jetpack/v4', |
| 144 | '/protect-dashboard/scan', |
| 145 | array( |
| 146 | array( |
| 147 | 'methods' => WP_REST_Server::READABLE, |
| 148 | 'callback' => array( __CLASS__, 'get_scan' ), |
| 149 | 'permission_callback' => array( Dashboard::class, 'can_manage' ), |
| 150 | ), |
| 151 | array( |
| 152 | 'methods' => WP_REST_Server::CREATABLE, |
| 153 | 'callback' => array( __CLASS__, 'start_scan' ), |
| 154 | 'permission_callback' => array( Dashboard::class, 'can_manage' ), |
| 155 | ), |
| 156 | ) |
| 157 | ); |
| 158 | |
| 159 | register_rest_route( |
| 160 | 'jetpack/v4', |
| 161 | '/protect-dashboard/scan/threats/(?P<id>\d+)/ignore', |
| 162 | array( |
| 163 | 'methods' => WP_REST_Server::CREATABLE, |
| 164 | 'callback' => array( __CLASS__, 'ignore_threat' ), |
| 165 | 'permission_callback' => array( __CLASS__, 'can_act_on_threats' ), |
| 166 | ) |
| 167 | ); |
| 168 | |
| 169 | register_rest_route( |
| 170 | 'jetpack/v4', |
| 171 | '/protect-dashboard/scan/threats/(?P<id>\d+)/unignore', |
| 172 | array( |
| 173 | 'methods' => WP_REST_Server::CREATABLE, |
| 174 | 'callback' => array( __CLASS__, 'unignore_threat' ), |
| 175 | 'permission_callback' => array( __CLASS__, 'can_act_on_threats' ), |
| 176 | ) |
| 177 | ); |
| 178 | |
| 179 | register_rest_route( |
| 180 | 'jetpack/v4', |
| 181 | '/protect-dashboard/scan/threats/(?P<id>\d+)/file', |
| 182 | array( |
| 183 | 'methods' => WP_REST_Server::READABLE, |
| 184 | 'callback' => array( __CLASS__, 'get_threat_file' ), |
| 185 | 'permission_callback' => array( __CLASS__, 'can_act_on_threats' ), |
| 186 | ) |
| 187 | ); |
| 188 | |
| 189 | register_rest_route( |
| 190 | 'jetpack/v4', |
| 191 | '/protect-dashboard/scan/ignored', |
| 192 | array( |
| 193 | 'methods' => WP_REST_Server::READABLE, |
| 194 | 'callback' => array( __CLASS__, 'get_ignored_threats' ), |
| 195 | 'permission_callback' => array( __CLASS__, 'can_act_on_threats' ), |
| 196 | ) |
| 197 | ); |
| 198 | |
| 199 | register_rest_route( |
| 200 | 'jetpack/v4', |
| 201 | '/protect-dashboard/scan/software/delete', |
| 202 | array( |
| 203 | 'methods' => WP_REST_Server::CREATABLE, |
| 204 | 'callback' => array( __CLASS__, 'delete_software' ), |
| 205 | 'permission_callback' => array( Dashboard::class, 'can_manage' ), |
| 206 | 'args' => array( |
| 207 | 'type' => array( |
| 208 | 'type' => 'string', |
| 209 | 'enum' => array( 'plugins', 'themes' ), |
| 210 | 'required' => true, |
| 211 | ), |
| 212 | 'slug' => array( |
| 213 | 'type' => 'string', |
| 214 | 'required' => true, |
| 215 | ), |
| 216 | ), |
| 217 | ) |
| 218 | ); |
| 219 | |
| 220 | register_rest_route( |
| 221 | 'jetpack/v4', |
| 222 | '/protect-dashboard/scan/threats/(?P<id>\d+)/fix', |
| 223 | array( |
| 224 | array( |
| 225 | 'methods' => WP_REST_Server::READABLE, |
| 226 | 'callback' => array( __CLASS__, 'get_fix_status' ), |
| 227 | 'permission_callback' => array( __CLASS__, 'can_act_on_threats' ), |
| 228 | ), |
| 229 | array( |
| 230 | 'methods' => WP_REST_Server::CREATABLE, |
| 231 | 'callback' => array( __CLASS__, 'fix_threat' ), |
| 232 | 'permission_callback' => array( __CLASS__, 'can_act_on_threats' ), |
| 233 | ), |
| 234 | ) |
| 235 | ); |
| 236 | } |
| 237 | |
| 238 | /** |
| 239 | * Only Scan can fix or ignore threats; the free vulnerability check can't. |
| 240 | * |
| 241 | * @return bool|WP_Error |
| 242 | */ |
| 243 | public static function can_act_on_threats() { |
| 244 | if ( ! Dashboard::can_manage() ) { |
| 245 | return false; |
| 246 | } |
| 247 | if ( ! Dashboard::has_scan_plan() ) { |
| 248 | return new WP_Error( 'scan_plan_required', __( 'Fixing and ignoring threats needs Jetpack Scan.', 'jetpack-protect-pkg' ), array( 'status' => 403 ) ); |
| 249 | } |
| 250 | return true; |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Ignore a threat; the client moves it to its ignored list. |
| 255 | * |
| 256 | * @param WP_REST_Request $request The request, with the threat `id`. |
| 257 | * @return array|WP_Error |
| 258 | */ |
| 259 | public static function ignore_threat( WP_REST_Request $request ) { |
| 260 | return self::set_ignored( (int) $request['id'], true ); |
| 261 | } |
| 262 | |
| 263 | /** |
| 264 | * Report an ignored threat again; the client moves it back to its active list. |
| 265 | * |
| 266 | * @param WP_REST_Request $request The request, with the threat `id`. |
| 267 | * @return array|WP_Error |
| 268 | */ |
| 269 | public static function unignore_threat( WP_REST_Request $request ) { |
| 270 | return self::set_ignored( (int) $request['id'], false ); |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * Ignore or unignore a threat, and drop the caches that list it. |
| 275 | * |
| 276 | * @param int $id The threat id. |
| 277 | * @param bool $ignore True to ignore, false to unignore. |
| 278 | * @return array|WP_Error |
| 279 | */ |
| 280 | private static function set_ignored( $id, $ignore ) { |
| 281 | $response = self::alerts_request( '/' . $id, 'POST', array( $ignore ? 'ignore' : 'unignore' => true ) ); |
| 282 | if ( is_wp_error( $response ) ) { |
| 283 | return $ignore |
| 284 | ? new WP_Error( 'threat_not_ignored', __( 'The threat couldn’t be ignored. Try again in a few minutes.', 'jetpack-protect-pkg' ), array( 'status' => 502 ) ) |
| 285 | : new WP_Error( 'threat_not_unignored', __( 'The threat couldn’t be unignored. Try again in a few minutes.', 'jetpack-protect-pkg' ), array( 'status' => 502 ) ); |
| 286 | } |
| 287 | |
| 288 | Scan_Status::delete_option(); |
| 289 | delete_transient( self::HISTORY_CACHE ); |
| 290 | return array( 'ok' => true ); |
| 291 | } |
| 292 | |
| 293 | /** |
| 294 | * Threats the site has ignored, from Scan history. |
| 295 | * |
| 296 | * @return array|WP_Error |
| 297 | */ |
| 298 | public static function get_ignored_threats() { |
| 299 | $history = self::get_history_threats(); |
| 300 | if ( is_wp_error( $history ) ) { |
| 301 | return new WP_Error( 'ignored_unavailable', __( 'Ignored threats are unavailable right now.', 'jetpack-protect-pkg' ), array( 'status' => 502 ) ); |
| 302 | } |
| 303 | return array_values( |
| 304 | array_filter( |
| 305 | $history, |
| 306 | function ( $threat ) { |
| 307 | return 'ignored' === $threat['status']; |
| 308 | } |
| 309 | ) |
| 310 | ); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * The whole file a threat was found in, looked up by threat so the client can't name a path. |
| 315 | * |
| 316 | * @param WP_REST_Request $request The request, with the threat `id`. |
| 317 | * @return array|WP_Error The file's site-relative `path`, `modified` time and `contents`. |
| 318 | */ |
| 319 | public static function get_threat_file( WP_REST_Request $request ) { |
| 320 | $filename = self::get_threat_filename( (int) $request['id'] ); |
| 321 | $path = $filename ? self::locate_threat_file( $filename ) : null; |
| 322 | if ( ! $path ) { |
| 323 | return new WP_Error( 'threat_file_not_found', __( 'This file is no longer on your site.', 'jetpack-protect-pkg' ), array( 'status' => 404 ) ); |
| 324 | } |
| 325 | if ( filesize( $path ) > self::MAX_FILE_BYTES ) { |
| 326 | return new WP_Error( 'threat_file_too_large', __( 'This file is too large to show here.', 'jetpack-protect-pkg' ), array( 'status' => 413 ) ); |
| 327 | } |
| 328 | |
| 329 | $contents = file_get_contents( $path ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- A local file. |
| 330 | if ( false === $contents ) { |
| 331 | return new WP_Error( 'threat_file_unreadable', __( 'This file couldn’t be read.', 'jetpack-protect-pkg' ), array( 'status' => 500 ) ); |
| 332 | } |
| 333 | if ( false !== strpos( $contents, "\0" ) ) { |
| 334 | return new WP_Error( 'threat_file_binary', __( 'This is a binary file, so it can’t be shown here.', 'jetpack-protect-pkg' ), array( 'status' => 415 ) ); |
| 335 | } |
| 336 | |
| 337 | $modified = filemtime( $path ); |
| 338 | return array( |
| 339 | 'path' => self::get_site_relative_path( $path ), |
| 340 | 'modified' => $modified ? gmdate( 'c', $modified ) : null, |
| 341 | // JSON can't carry invalid UTF-8, which obfuscated code often has. |
| 342 | 'contents' => wp_check_invalid_utf8( $contents, true ), |
| 343 | ); |
| 344 | } |
| 345 | |
| 346 | /** |
| 347 | * The file Scan reported a threat in, from the current report or, for an ignored threat, history. |
| 348 | * |
| 349 | * @param int $id The threat id. |
| 350 | * @return string|null The path as Scan names it, or null when the threat isn't in a file. |
| 351 | */ |
| 352 | private static function get_threat_filename( $id ) { |
| 353 | $threats = class_exists( Status::class ) ? (array) ( Scan_Status::get_status()->threats ?? array() ) : array(); |
| 354 | foreach ( $threats as $threat ) { |
| 355 | if ( (int) ( $threat->id ?? 0 ) === $id ) { |
| 356 | return $threat->filename ?? null; |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | $history = self::get_history_threats(); |
| 361 | if ( ! is_array( $history ) ) { |
| 362 | return null; |
| 363 | } |
| 364 | foreach ( $history as $threat ) { |
| 365 | if ( (int) $threat['id'] === $id ) { |
| 366 | return $threat['filename'] ?? null; |
| 367 | } |
| 368 | } |
| 369 | return null; |
| 370 | } |
| 371 | |
| 372 | /** |
| 373 | * Where a file Scan reported is on this server, since Scan names it from its own root, such as `/htdocs/wp-content/…`. |
| 374 | * |
| 375 | * @param string $filename The path as Scan names it. |
| 376 | * @return string|null The file's real path, only ever inside the site's directories. |
| 377 | */ |
| 378 | private static function locate_threat_file( $filename ) { |
| 379 | $roots = array_unique( array_filter( array( realpath( ABSPATH ), realpath( dirname( WP_CONTENT_DIR ) ) ) ) ); |
| 380 | $parts = array_values( array_filter( explode( '/', wp_normalize_path( $filename ) ), 'strlen' ) ); |
| 381 | |
| 382 | // Anchored at wp-content, so a deleted plugin file can't fall back to a same-named file higher up. |
| 383 | $anchor = array_search( 'wp-content', $parts, true ); |
| 384 | $candidates = array(); |
| 385 | if ( false !== $anchor ) { |
| 386 | $candidates[] = WP_CONTENT_DIR . '/' . implode( '/', array_slice( $parts, $anchor + 1 ) ); |
| 387 | } else { |
| 388 | // Scan's root has a different path here, so try the longest tail first. |
| 389 | for ( $i = 0, $count = count( $parts ); $i < $count; $i++ ) { |
| 390 | foreach ( $roots as $root ) { |
| 391 | $candidates[] = $root . '/' . implode( '/', array_slice( $parts, $i ) ); |
| 392 | } |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | foreach ( $candidates as $candidate ) { |
| 397 | $path = realpath( $candidate ); |
| 398 | if ( ! $path || ! is_file( $path ) ) { |
| 399 | continue; |
| 400 | } |
| 401 | foreach ( array_merge( $roots, array( realpath( WP_CONTENT_DIR ) ) ) as $root ) { |
| 402 | if ( $root && 0 === strpos( $path, trailingslashit( $root ) ) ) { |
| 403 | return $path; |
| 404 | } |
| 405 | } |
| 406 | } |
| 407 | return null; |
| 408 | } |
| 409 | |
| 410 | /** |
| 411 | * A file's path from the site's root, such as `wp-content/uploads/evil.php`. |
| 412 | * |
| 413 | * @param string $path The file's real path, inside the site. |
| 414 | * @return string |
| 415 | */ |
| 416 | private static function get_site_relative_path( $path ) { |
| 417 | foreach ( array( dirname( WP_CONTENT_DIR ), ABSPATH ) as $root ) { |
| 418 | $root = realpath( $root ); |
| 419 | if ( $root && 0 === strpos( $path, trailingslashit( $root ) ) ) { |
| 420 | return substr( $path, strlen( trailingslashit( $root ) ) ); |
| 421 | } |
| 422 | } |
| 423 | return basename( $path ); |
| 424 | } |
| 425 | |
| 426 | /** |
| 427 | * Every threat Scan has fixed or ignored, cached for five minutes. |
| 428 | * |
| 429 | * @return array|WP_Error |
| 430 | */ |
| 431 | public static function get_history_threats() { |
| 432 | $cached = get_transient( self::HISTORY_CACHE ); |
| 433 | if ( is_array( $cached ) ) { |
| 434 | return $cached; |
| 435 | } |
| 436 | |
| 437 | $api_url = Scan_Status::get_api_url(); |
| 438 | $response = is_wp_error( $api_url ) ? $api_url : Client::wpcom_json_api_request_as_blog( |
| 439 | $api_url . '/history', |
| 440 | '2', |
| 441 | array( |
| 442 | 'method' => 'GET', |
| 443 | 'timeout' => 30, |
| 444 | ), |
| 445 | null, |
| 446 | 'wpcom' |
| 447 | ); |
| 448 | $body = is_wp_error( $response ) ? null : json_decode( wp_remote_retrieve_body( $response ) ); |
| 449 | if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) || ! is_object( $body ) ) { |
| 450 | return new WP_Error( 'history_unavailable', __( 'Scan history is unavailable right now.', 'jetpack-protect-pkg' ), array( 'status' => 502 ) ); |
| 451 | } |
| 452 | |
| 453 | $threats = Dashboard_Threats::format_all( (array) ( $body->threats ?? array() ) ); |
| 454 | set_transient( self::HISTORY_CACHE, $threats, 5 * MINUTE_IN_SECONDS ); |
| 455 | return $threats; |
| 456 | } |
| 457 | |
| 458 | /** |
| 459 | * Delete an inactive plugin or a theme the site doesn't use, so its threats go with it. |
| 460 | * |
| 461 | * @param WP_REST_Request $request The request, with the extension `type` and `slug`. |
| 462 | * @return array|WP_Error |
| 463 | */ |
| 464 | public static function delete_software( WP_REST_Request $request ) { |
| 465 | $type = $request['type']; |
| 466 | $slug = $request['slug']; |
| 467 | |
| 468 | require_once ABSPATH . 'wp-admin/includes/file.php'; |
| 469 | require_once ABSPATH . 'wp-admin/includes/plugin.php'; |
| 470 | require_once ABSPATH . 'wp-admin/includes/theme.php'; |
| 471 | |
| 472 | // Looked up by key, so only the slug of installed software matches and anything else is refused. |
| 473 | $file = 'plugins' === $type ? ( Dashboard_Threats::get_plugin_files( get_plugins() )[ $slug ] ?? null ) : null; |
| 474 | $theme = 'themes' === $type ? ( wp_get_themes( array( 'errors' => null ) )[ $slug ] ?? null ) : null; |
| 475 | if ( ! Dashboard_Threats::can_delete( $type, $file, $theme ) ) { |
| 476 | return new WP_Error( 'software_not_deletable', __( 'This can’t be deleted here. It may be in use, or already gone.', 'jetpack-protect-pkg' ), array( 'status' => 403 ) ); |
| 477 | } |
| 478 | |
| 479 | $deleted = null; |
| 480 | if ( self::can_write_files() ) { |
| 481 | $deleted = 'plugins' === $type ? delete_plugins( array( $file ) ) : delete_theme( $theme->get_stylesheet() ); |
| 482 | } |
| 483 | if ( true !== $deleted ) { |
| 484 | return new WP_Error( 'software_not_deleted', is_wp_error( $deleted ) ? $deleted->get_error_message() : __( 'WordPress couldn’t delete the files. Try deleting it from the Plugins or Themes screen.', 'jetpack-protect-pkg' ), array( 'status' => 500 ) ); |
| 485 | } |
| 486 | |
| 487 | delete_transient( self::HISTORY_CACHE ); |
| 488 | if ( class_exists( Status::class ) ) { |
| 489 | Scan_Status::delete_option(); |
| 490 | Protect_Status::delete_option(); |
| 491 | } |
| 492 | return array( 'ok' => true ); |
| 493 | } |
| 494 | |
| 495 | /** |
| 496 | * Whether WordPress can delete files without asking for filesystem credentials. |
| 497 | * |
| 498 | * Core's delete functions print the credentials form and exit when it can't, which a REST request can't show. |
| 499 | * |
| 500 | * @return bool |
| 501 | */ |
| 502 | private static function can_write_files() { |
| 503 | if ( 'direct' === get_filesystem_method() ) { |
| 504 | return true; |
| 505 | } |
| 506 | ob_start(); |
| 507 | $has_credentials = request_filesystem_credentials( self_admin_url() ); |
| 508 | ob_end_clean(); |
| 509 | return (bool) $has_credentials; |
| 510 | } |
| 511 | |
| 512 | /** |
| 513 | * Ask Scan to fix a threat. |
| 514 | * |
| 515 | * @param WP_REST_Request $request The request, with the threat `id`. |
| 516 | * @return array|WP_Error The threat's fixer status. |
| 517 | */ |
| 518 | public static function fix_threat( WP_REST_Request $request ) { |
| 519 | $id = (int) $request['id']; |
| 520 | $response = self::alerts_request( '/fix', 'POST', array( 'threat_ids' => array( $id ) ) ); |
| 521 | if ( is_wp_error( $response ) ) { |
| 522 | return new WP_Error( 'threat_not_fixed', __( 'The fix couldn’t be started. Try again in a few minutes.', 'jetpack-protect-pkg' ), array( 'status' => 502 ) ); |
| 523 | } |
| 524 | |
| 525 | Scan_Status::delete_option(); |
| 526 | $status = self::get_threat_fix_status( $response, $id ); |
| 527 | if ( 'fixed' === $status['status'] ) { |
| 528 | delete_transient( self::HISTORY_CACHE ); |
| 529 | } |
| 530 | return $status; |
| 531 | } |
| 532 | |
| 533 | /** |
| 534 | * How a fix is going, with the refreshed report once it has finished. |
| 535 | * |
| 536 | * @param WP_REST_Request $request The request, with the threat `id`. |
| 537 | * @return array|WP_Error |
| 538 | */ |
| 539 | public static function get_fix_status( WP_REST_Request $request ) { |
| 540 | $id = (int) $request['id']; |
| 541 | $response = self::alerts_request( add_query_arg( 'threat_ids', array( $id ), '/fix' ), 'GET' ); |
| 542 | if ( is_wp_error( $response ) ) { |
| 543 | return new WP_Error( 'fix_status_unavailable', __( 'We couldn’t check on the fix.', 'jetpack-protect-pkg' ), array( 'status' => 502 ) ); |
| 544 | } |
| 545 | |
| 546 | $status = self::get_threat_fix_status( $response, $id ); |
| 547 | if ( in_array( $status['status'], self::FIX_DONE_STATUSES, true ) ) { |
| 548 | // A fixed threat moves into Scan history. |
| 549 | if ( 'fixed' === $status['status'] ) { |
| 550 | delete_transient( self::HISTORY_CACHE ); |
| 551 | } |
| 552 | $status['scan'] = self::get_scan_report( true, true ); |
| 553 | } |
| 554 | return $status; |
| 555 | } |
| 556 | |
| 557 | /** |
| 558 | * One threat's status from a WordPress.com fixer response. |
| 559 | * |
| 560 | * @param object $response The decoded response, with fixer statuses under `threats`, keyed by threat id. |
| 561 | * @param int $id The threat id. |
| 562 | * @return array The `status`, such as `in_progress` or `fixed`, and any `error`. |
| 563 | */ |
| 564 | private static function get_threat_fix_status( $response, $id ) { |
| 565 | $threat = $response->threats->{ (string) $id } ?? null; |
| 566 | return array( |
| 567 | 'status' => $threat->status ?? ( empty( $threat->error ) ? 'in_progress' : 'not_fixed' ), |
| 568 | 'error' => $threat->error ?? null, |
| 569 | ); |
| 570 | } |
| 571 | |
| 572 | /** |
| 573 | * Call the site's WordPress.com alerts API as the current user, as the Protect plugin does. |
| 574 | * |
| 575 | * @param string $path Path after `/sites/{id}/alerts`. |
| 576 | * @param string $method HTTP method. |
| 577 | * @param array|null $body Body to send as JSON. |
| 578 | * @return object|WP_Error The decoded response. |
| 579 | */ |
| 580 | private static function alerts_request( $path, $method, $body = null ) { |
| 581 | $blog_id = (int) Jetpack_Options::get_option( 'id' ); |
| 582 | if ( ! $blog_id ) { |
| 583 | return new WP_Error( 'site_not_connected' ); |
| 584 | } |
| 585 | |
| 586 | $response = Client::wpcom_json_api_request_as_user( |
| 587 | sprintf( '/sites/%d/alerts%s', $blog_id, $path ), |
| 588 | '2', |
| 589 | array( 'method' => $method ), |
| 590 | null === $body ? null : wp_json_encode( $body, JSON_UNESCAPED_SLASHES ), |
| 591 | 'wpcom' |
| 592 | ); |
| 593 | if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) { |
| 594 | return new WP_Error( 'alerts_request_failed' ); |
| 595 | } |
| 596 | |
| 597 | // Ignoring answers with no useful body; only the status code matters there. |
| 598 | $decoded = json_decode( wp_remote_retrieve_body( $response ) ); |
| 599 | return is_object( $decoded ) ? $decoded : new \stdClass(); |
| 600 | } |
| 601 | |
| 602 | /** |
| 603 | * The latest report, fresh from WordPress.com, for polling while a scan runs. |
| 604 | * |
| 605 | * @return array |
| 606 | */ |
| 607 | public static function get_scan() { |
| 608 | return self::get_scan_report( Dashboard::has_scan_plan(), true ); |
| 609 | } |
| 610 | |
| 611 | /** |
| 612 | * Start a scan: enqueue one with a Scan plan, otherwise ask for the latest vulnerability report. |
| 613 | * |
| 614 | * @return array|WP_Error |
| 615 | */ |
| 616 | public static function start_scan() { |
| 617 | $has_plan = Dashboard::has_scan_plan(); |
| 618 | |
| 619 | if ( $has_plan && self::claim_request_lock() ) { |
| 620 | $api_url = Scan_Status::get_api_url(); |
| 621 | $response = is_wp_error( $api_url ) |
| 622 | ? $api_url |
| 623 | : Client::wpcom_json_api_request_as_blog( $api_url . '/enqueue', '2', array( 'method' => 'POST' ), null, 'wpcom' ); |
| 624 | $error = self::get_enqueue_error( $response ); |
| 625 | if ( $error ) { |
| 626 | self::release_request_lock(); |
| 627 | return $error; |
| 628 | } |
| 629 | Scan_Status::delete_option(); |
| 630 | delete_transient( self::HISTORY_CACHE ); |
| 631 | |
| 632 | /** |
| 633 | * Fires after the Protect dashboard enqueues a scan on WordPress.com. |
| 634 | * |
| 635 | * @since 0.1.0 |
| 636 | */ |
| 637 | do_action( 'jetpack_protect_dashboard_scan_started' ); |
| 638 | } |
| 639 | |
| 640 | return self::get_scan_report( $has_plan, true ); |
| 641 | } |
| 642 | |
| 643 | /** |
| 644 | * Why WordPress.com didn't enqueue a scan, including a `success: false` it answers with a 200. |
| 645 | * |
| 646 | * @param array|WP_Error $response The enqueue response. |
| 647 | * @return WP_Error|null The error, with WordPress.com's reason when it gives one, or null once enqueued. |
| 648 | */ |
| 649 | private static function get_enqueue_error( $response ) { |
| 650 | $body = is_wp_error( $response ) ? null : json_decode( wp_remote_retrieve_body( $response ) ); |
| 651 | if ( ! is_wp_error( $response ) && 200 === wp_remote_retrieve_response_code( $response ) && false !== ( $body->success ?? null ) ) { |
| 652 | return null; |
| 653 | } |
| 654 | |
| 655 | $reasons = (array) ( $body->error->errors ?? array() ); |
| 656 | $reason = $reasons ? (array) reset( $reasons ) : array(); |
| 657 | $reason = $reason[0] ?? $body->message ?? null; |
| 658 | $message = is_string( $reason ) && '' !== $reason |
| 659 | /* translators: %s is the reason WordPress.com gave, such as "Unable to find a valid site." */ |
| 660 | ? sprintf( __( 'The scan couldn’t be started: %s', 'jetpack-protect-pkg' ), $reason ) |
| 661 | : __( 'The scan couldn’t be started. Try again in a few minutes.', 'jetpack-protect-pkg' ); |
| 662 | |
| 663 | return new WP_Error( 'scan_not_started', $message, array( 'status' => 502 ) ); |
| 664 | } |
| 665 | |
| 666 | /** |
| 667 | * Claim the once-a-minute scan request slot before calling WordPress.com, so concurrent requests don't both enqueue. |
| 668 | * |
| 669 | * @return bool Whether this request got the slot. |
| 670 | */ |
| 671 | private static function claim_request_lock() { |
| 672 | // `wp_cache_add()` is atomic with a persistent object cache; transients can only narrow the race. |
| 673 | if ( wp_using_ext_object_cache() ) { |
| 674 | return wp_cache_add( self::REQUEST_LOCK, time(), 'jetpack_protect', MINUTE_IN_SECONDS ); |
| 675 | } |
| 676 | if ( get_transient( self::REQUEST_LOCK ) ) { |
| 677 | return false; |
| 678 | } |
| 679 | set_transient( self::REQUEST_LOCK, time(), MINUTE_IN_SECONDS ); |
| 680 | return true; |
| 681 | } |
| 682 | |
| 683 | /** |
| 684 | * Give the scan request slot back after a failed request, so the user can retry straight away. |
| 685 | * |
| 686 | * @return void |
| 687 | */ |
| 688 | private static function release_request_lock() { |
| 689 | if ( wp_using_ext_object_cache() ) { |
| 690 | wp_cache_delete( self::REQUEST_LOCK, 'jetpack_protect' ); |
| 691 | } else { |
| 692 | delete_transient( self::REQUEST_LOCK ); |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | /** |
| 697 | * The latest vulnerability report: from Scan on a paid plan, otherwise Protect's free check. |
| 698 | * |
| 699 | * @param bool $has_plan Whether the site has a Scan plan. |
| 700 | * @param bool $refresh Fetch the report from WordPress.com instead of the cache; the plan is never refreshed. |
| 701 | * @return array |
| 702 | */ |
| 703 | private static function get_scan_report( $has_plan, $refresh = false ) { |
| 704 | $error = array( |
| 705 | 'error' => true, |
| 706 | 'scanning' => false, |
| 707 | ); |
| 708 | if ( ! class_exists( Status::class ) ) { |
| 709 | return $error; |
| 710 | } |
| 711 | |
| 712 | if ( $refresh ) { |
| 713 | Status::$status = null; |
| 714 | } |
| 715 | $status = $has_plan ? Scan_Status::get_status( $refresh ) : Protect_Status::get_status( $refresh ); |
| 716 | if ( ! empty( $status->error ) ) { |
| 717 | return $error; |
| 718 | } |
| 719 | |
| 720 | if ( ! function_exists( 'get_plugins' ) ) { |
| 721 | require_once ABSPATH . 'wp-admin/includes/plugin.php'; |
| 722 | } |
| 723 | |
| 724 | $is_initializing = empty( $status->last_checked ) && in_array( $status->status, self::INITIALIZING_STATUSES, true ); |
| 725 | |
| 726 | return array( |
| 727 | 'error' => false, |
| 728 | 'scanning' => $is_initializing || in_array( $status->status, self::SCANNING_STATUSES, true ), |
| 729 | 'lastChecked' => $status->last_checked, |
| 730 | 'progress' => isset( $status->current_progress ) ? (int) $status->current_progress : null, |
| 731 | 'pluginsChecked' => count( get_plugins() ), |
| 732 | 'themesChecked' => count( wp_get_themes() ), |
| 733 | 'threats' => Dashboard_Threats::format_all( $status->threats ), |
| 734 | ); |
| 735 | } |
| 736 | } |