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| 1 | <?php |
| 2 | /** |
| 3 | * The Jetpack Connection error class file. |
| 4 | * |
| 5 | * @package automattic/jetpack-connection |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\Connection; |
| 9 | |
| 10 | /** |
| 11 | * The Jetpack Connection Errors that handles errors |
| 12 | * |
| 13 | * This class handles the following workflow for incoming XML-RPC and REST API requests: |
| 14 | * |
| 15 | * 1. An incoming XML-RPC or REST API request with an invalid signature triggers an error |
| 16 | * 2. Applies a gate to only process each error code once an hour to avoid overflow |
| 17 | * 3. It stores the error on the database, but we don't know yet if this is a valid error, because |
| 18 | * we can't confirm it came from WP.com. |
| 19 | * 4. It encrypts the error details and sends it to the wp.com server |
| 20 | * 5. wp.com checks it and, if valid, sends a new request back to this site using the verify_xml_rpc_error REST endpoint |
| 21 | * 6. This endpoint adds this error to the Verified errors in the database |
| 22 | * 7. Triggers a workflow depending on the error (display user an error message, do some self healing, etc.) |
| 23 | * |
| 24 | * Note: This class only handles authentication/signature errors from incoming requests to this site. |
| 25 | * Outgoing request signing issues (when this site makes requests to WP.com) are not handled here. |
| 26 | * |
| 27 | * Errors are stored in the database as options in the following format: |
| 28 | * |
| 29 | * [ |
| 30 | * $error_code => [ |
| 31 | * $user_id => [ |
| 32 | * $error_details |
| 33 | * ] |
| 34 | * ] |
| 35 | * ] |
| 36 | * |
| 37 | * For each error code we store a maximum of 5 errors for 5 different user ids. |
| 38 | * |
| 39 | * A user ID can be: |
| 40 | * * 0 for blog tokens |
| 41 | * * positive integer for user tokens |
| 42 | * * 'invalid' for malformed tokens |
| 43 | * |
| 44 | * Example error structure: |
| 45 | * [ |
| 46 | * 'invalid_token' => [ |
| 47 | * '123' => [ |
| 48 | * 'error_code' => 'invalid_token', |
| 49 | * 'user_id' => '123', |
| 50 | * 'error_message' => 'The token is invalid', |
| 51 | * 'error_data' => ['action' => 'reconnect'], |
| 52 | * 'timestamp' => 1234567890, |
| 53 | * 'nonce' => 'abc123def', |
| 54 | * 'error_type' => 'xmlrpc' |
| 55 | * ] |
| 56 | * ] |
| 57 | * ] |
| 58 | * |
| 59 | * @since 1.14.2 |
| 60 | */ |
| 61 | class Error_Handler { |
| 62 | |
| 63 | /** |
| 64 | * The name of the option that stores the errors |
| 65 | * |
| 66 | * @since 1.14.2 |
| 67 | * |
| 68 | * @var string |
| 69 | */ |
| 70 | const STORED_ERRORS_OPTION = 'jetpack_connection_xmlrpc_errors'; |
| 71 | |
| 72 | /** |
| 73 | * The name of the option that stores the errors |
| 74 | * |
| 75 | * @since 1.14.2 |
| 76 | * |
| 77 | * @var string |
| 78 | */ |
| 79 | const STORED_VERIFIED_ERRORS_OPTION = 'jetpack_connection_xmlrpc_verified_errors'; |
| 80 | |
| 81 | /** |
| 82 | * The prefix of the transient that controls the gate for each error code |
| 83 | * |
| 84 | * @since 1.14.2 |
| 85 | * |
| 86 | * @var string |
| 87 | */ |
| 88 | const ERROR_REPORTING_GATE = 'jetpack_connection_error_reporting_gate_'; |
| 89 | |
| 90 | /** |
| 91 | * Time in seconds a test should live in the database before being discarded |
| 92 | * |
| 93 | * @since 1.14.2 |
| 94 | */ |
| 95 | const ERROR_LIFE_TIME = DAY_IN_SECONDS; |
| 96 | |
| 97 | /** |
| 98 | * List of known errors. Only error codes in this list will be handled |
| 99 | * |
| 100 | * @since 1.14.2 |
| 101 | * |
| 102 | * @var array |
| 103 | */ |
| 104 | public $known_errors = array( |
| 105 | 'malformed_token', |
| 106 | 'malformed_user_id', |
| 107 | 'unknown_user', |
| 108 | 'no_user_tokens', |
| 109 | 'empty_master_user_option', |
| 110 | 'no_token_for_user', |
| 111 | 'token_malformed', |
| 112 | 'user_id_mismatch', |
| 113 | 'no_possible_tokens', |
| 114 | 'no_valid_user_token', |
| 115 | 'no_valid_blog_token', |
| 116 | 'unknown_token', |
| 117 | 'could_not_sign', |
| 118 | 'invalid_scheme', |
| 119 | 'invalid_secret', |
| 120 | 'invalid_token', |
| 121 | 'token_mismatch', |
| 122 | 'invalid_body', |
| 123 | 'invalid_signature', |
| 124 | 'invalid_body_hash', |
| 125 | 'invalid_nonce', |
| 126 | 'signature_mismatch', |
| 127 | 'invalid_connection_owner', |
| 128 | ); |
| 129 | |
| 130 | /** |
| 131 | * Holds the instance of this singleton class |
| 132 | * |
| 133 | * @since 1.14.2 |
| 134 | * |
| 135 | * @var Error_Handler $instance |
| 136 | */ |
| 137 | public static $instance = null; |
| 138 | |
| 139 | /** |
| 140 | * Cached displayable errors to avoid duplicate processing |
| 141 | * |
| 142 | * @since 6.13.10 |
| 143 | * |
| 144 | * @var array|null |
| 145 | */ |
| 146 | private $cached_displayable_errors = null; |
| 147 | |
| 148 | /** |
| 149 | * Initialize instance, hooks and load verified errors handlers |
| 150 | * |
| 151 | * @since 1.14.2 |
| 152 | */ |
| 153 | private function __construct() { |
| 154 | defined( 'JETPACK__ERRORS_PUBLIC_KEY' ) || define( 'JETPACK__ERRORS_PUBLIC_KEY', 'KdZY80axKX+nWzfrOcizf0jqiFHnrWCl9X8yuaClKgM=' ); |
| 155 | |
| 156 | add_action( 'rest_api_init', array( $this, 'register_verify_error_endpoint' ) ); |
| 157 | |
| 158 | // Handle verified errors on admin pages. |
| 159 | add_action( 'admin_init', array( $this, 'handle_verified_errors' ) ); |
| 160 | |
| 161 | // If the site gets reconnected, clear errors. |
| 162 | add_action( 'jetpack_site_registered', array( $this, 'delete_all_errors' ) ); |
| 163 | add_action( 'jetpack_get_site_data_success', array( $this, 'delete_all_api_errors' ) ); |
| 164 | add_filter( 'jetpack_connection_disconnect_site_wpcom', array( $this, 'delete_all_errors_and_return_unfiltered_value' ) ); |
| 165 | add_filter( 'jetpack_connection_delete_all_tokens', array( $this, 'delete_all_errors_and_return_unfiltered_value' ) ); |
| 166 | add_action( 'jetpack_unlinked_user', array( $this, 'delete_all_errors' ) ); |
| 167 | add_action( 'jetpack_updated_user_token', array( $this, 'delete_all_errors' ) ); |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Gets displayable errors with predefined structure and optional filtering. |
| 172 | * |
| 173 | * This method returns a hierarchical array of errors (error_code => user_id => error_details) |
| 174 | * that can be safely displayed in My Jetpack and other UI components. It includes |
| 175 | * predefined error messages and actions, with optional filtering for specific sites. |
| 176 | * Only processes a limited set of error codes that are meant to be displayed to users. |
| 177 | * |
| 178 | * @since 6.13.10 |
| 179 | * |
| 180 | * @return array Array of displayable errors with hierarchical structure. |
| 181 | * Example: |
| 182 | * [ |
| 183 | * 'invalid_token' => [ |
| 184 | * '123' => [ |
| 185 | * 'error_code' => 'invalid_token', |
| 186 | * 'user_id' => '123', |
| 187 | * 'error_message' => 'Your connection with WordPress.com seems to be broken...', |
| 188 | * 'error_data' => ['action' => 'reconnect'], |
| 189 | * 'timestamp' => 1234567890, |
| 190 | * 'nonce' => 'abc123def', |
| 191 | * 'error_type' => 'xmlrpc' |
| 192 | * ] |
| 193 | * ] |
| 194 | * ] |
| 195 | */ |
| 196 | public function get_displayable_errors() { |
| 197 | // Check if we have cached result AND no filters are applied |
| 198 | if ( $this->cached_displayable_errors !== null && ! $this->has_external_filters() ) { |
| 199 | return $this->cached_displayable_errors; |
| 200 | } |
| 201 | |
| 202 | $verified_errors = $this->get_verified_errors(); |
| 203 | $displayable_errors = array(); |
| 204 | |
| 205 | // Only process error codes that are meant to be displayed to users |
| 206 | $displayable_error_codes = array( |
| 207 | 'malformed_token', |
| 208 | 'token_malformed', |
| 209 | 'no_possible_tokens', |
| 210 | 'no_valid_user_token', |
| 211 | 'no_valid_blog_token', |
| 212 | 'unknown_token', |
| 213 | 'could_not_sign', |
| 214 | 'invalid_token', |
| 215 | 'token_mismatch', |
| 216 | 'invalid_signature', |
| 217 | 'signature_mismatch', |
| 218 | 'no_user_tokens', |
| 219 | 'no_token_for_user', |
| 220 | 'invalid_connection_owner', |
| 221 | ); |
| 222 | |
| 223 | foreach ( $verified_errors as $error_code => $users ) { |
| 224 | // Skip error codes that are not meant to be displayed |
| 225 | if ( ! in_array( $error_code, $displayable_error_codes, true ) ) { |
| 226 | continue; |
| 227 | } |
| 228 | |
| 229 | $displayable_errors[ $error_code ] = array(); |
| 230 | |
| 231 | foreach ( $users as $user_id => $error ) { |
| 232 | // Override other error messages with default display message |
| 233 | $displayable_errors[ $error_code ][ $user_id ] = array_merge( |
| 234 | $error, |
| 235 | array( |
| 236 | 'error_message' => __( "Your connection with WordPress.com seems to be broken. If you're experiencing issues, please try reconnecting.", 'jetpack-connection' ), |
| 237 | ) |
| 238 | ); |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | /** |
| 243 | * Filter displayable connection errors to allow customization of error messages and actions. |
| 244 | * |
| 245 | * This filter allows sites to customize how connection errors are displayed, |
| 246 | * including modifying error messages, actions, and data. Access to this filter |
| 247 | * is controlled by should_allow_error_filtering(). |
| 248 | * |
| 249 | * @since 6.12.0 |
| 250 | * |
| 251 | * @param array $displayable_errors Array of displayable errors with hierarchical structure. |
| 252 | * @param array $verified_errors Array of raw verified errors from the database. |
| 253 | */ |
| 254 | if ( $this->should_allow_error_filtering() ) { |
| 255 | $displayable_errors = apply_filters( 'jetpack_connection_get_verified_errors', $displayable_errors, $verified_errors ); |
| 256 | } |
| 257 | |
| 258 | // Only cache if no external filters are applied |
| 259 | if ( ! $this->has_external_filters() ) { |
| 260 | $this->cached_displayable_errors = $displayable_errors; |
| 261 | } |
| 262 | |
| 263 | return $displayable_errors; |
| 264 | } |
| 265 | |
| 266 | /** |
| 267 | * Sets up hooks for displaying verified errors on admin pages. |
| 268 | * |
| 269 | * This method is hooked into 'admin_init'. It retrieves displayable errors |
| 270 | * and, if any exist, sets up the necessary action and filter hooks to display |
| 271 | * them in admin notices and the React dashboard. |
| 272 | * |
| 273 | * @since 1.14.2 |
| 274 | */ |
| 275 | public function handle_verified_errors() { |
| 276 | $displayable_errors = $this->get_displayable_errors(); |
| 277 | |
| 278 | // If there are any displayable errors, set up the hooks for displaying them in React dashboard and admin notices. |
| 279 | if ( ! empty( $displayable_errors ) ) { |
| 280 | add_action( 'admin_notices', array( $this, 'generic_admin_notice_error' ) ); |
| 281 | add_filter( 'react_connection_errors_initial_state', array( $this, 'jetpack_react_dashboard_error' ), 10, 1 ); |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | /** |
| 286 | * Determines whether error filtering should be allowed. |
| 287 | * |
| 288 | * This method controls access to the jetpack_connection_displayable_errors filter. |
| 289 | * Currently, only WoA sites are allowed to use this filter. |
| 290 | * |
| 291 | * @since 6.13.10 |
| 292 | * |
| 293 | * @return bool True if error filtering should be allowed, false otherwise. |
| 294 | */ |
| 295 | protected function should_allow_error_filtering() { |
| 296 | $host = new \Automattic\Jetpack\Status\Host(); |
| 297 | if ( $host->is_woa_site() || $host->is_vip_site() || $host->is_newspack_site() ) { |
| 298 | return true; |
| 299 | } |
| 300 | |
| 301 | return false; |
| 302 | } |
| 303 | |
| 304 | /** |
| 305 | * Provides displayable connection errors for the React dashboard in a flat array format. |
| 306 | * |
| 307 | * This method transforms the hierarchical displayable_errors structure into the flat format |
| 308 | * expected by the React dashboard. It's used as a filter for 'react_connection_errors_initial_state'. |
| 309 | * Returns only the first error to avoid overwhelming the user with multiple error messages. |
| 310 | * |
| 311 | * @since 8.9.0 |
| 312 | * |
| 313 | * @param array $errors Existing errors from other filters (unused but required for filter signature). |
| 314 | * @return array Array containing only the first displayable error for the React dashboard. |
| 315 | * Example: |
| 316 | * [ |
| 317 | * [ |
| 318 | * 'code' => 'connection_error', |
| 319 | * 'message' => 'Your connection with WordPress.com seems to be broken...', |
| 320 | * 'action' => 'reconnect', |
| 321 | * 'data' => [ |
| 322 | * 'api_error_code' => 'invalid_token', |
| 323 | * 'action' => 'reconnect' |
| 324 | * ] |
| 325 | * ] |
| 326 | * ] |
| 327 | */ |
| 328 | public function jetpack_react_dashboard_error( $errors ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable |
| 329 | $displayable_errors = $this->get_displayable_errors(); |
| 330 | |
| 331 | // Get the first error only |
| 332 | $first_error_code = array_key_first( $displayable_errors ); |
| 333 | if ( ! $first_error_code ) { |
| 334 | return array(); // No errors |
| 335 | } |
| 336 | |
| 337 | $first_user_errors = $displayable_errors[ $first_error_code ]; |
| 338 | if ( ! is_array( $first_user_errors ) || empty( $first_user_errors ) ) { |
| 339 | return array(); // Invalid error structure |
| 340 | } |
| 341 | |
| 342 | $first_error = reset( $first_user_errors ); |
| 343 | |
| 344 | // Validate error structure |
| 345 | if ( ! is_array( $first_error ) || ! isset( $first_error['error_message'] ) ) { |
| 346 | return array(); // Invalid error structure |
| 347 | } |
| 348 | |
| 349 | // Determine the action - use the one from error_data if available, otherwise default to 'reconnect' |
| 350 | $action = 'reconnect'; // Default action for connection errors |
| 351 | if ( isset( $first_error['error_data']['action'] ) && is_string( $first_error['error_data']['action'] ) ) { |
| 352 | $action = $first_error['error_data']['action']; |
| 353 | } |
| 354 | |
| 355 | // Safely merge error data, ensuring we don't overwrite critical fields |
| 356 | $error_data = isset( $first_error['error_data'] ) && is_array( $first_error['error_data'] ) ? $first_error['error_data'] : array(); |
| 357 | |
| 358 | // Build the data array with safe merging |
| 359 | $dashboard_data = array( 'api_error_code' => $first_error_code ); |
| 360 | |
| 361 | // Add error_data fields, but be careful not to overwrite api_error_code |
| 362 | foreach ( $error_data as $key => $value ) { |
| 363 | if ( 'api_error_code' !== $key ) { |
| 364 | $dashboard_data[ $key ] = $value; |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | $dashboard_error = array( |
| 369 | array( |
| 370 | 'code' => 'connection_error', |
| 371 | 'message' => $first_error['error_message'], |
| 372 | 'action' => $action, |
| 373 | 'data' => $dashboard_data, |
| 374 | ), |
| 375 | ); |
| 376 | |
| 377 | return $dashboard_error; |
| 378 | } |
| 379 | |
| 380 | /** |
| 381 | * Gets the instance of this singleton class |
| 382 | * |
| 383 | * @since 1.14.2 |
| 384 | * |
| 385 | * @return Error_Handler $instance |
| 386 | */ |
| 387 | public static function get_instance() { |
| 388 | if ( self::$instance === null ) { |
| 389 | self::$instance = new self(); |
| 390 | } |
| 391 | return self::$instance; |
| 392 | } |
| 393 | |
| 394 | /** |
| 395 | * Keep track of a connection error that was encountered |
| 396 | * |
| 397 | * @param \WP_Error $error The error object. |
| 398 | * @param boolean $force Force the report, even if should_report_error is false. |
| 399 | * @param boolean $skip_wpcom_verification Set to 'true' to verify the error locally and skip the WP.com verification. |
| 400 | * |
| 401 | * @return void |
| 402 | * @since 1.14.2 |
| 403 | */ |
| 404 | public function report_error( \WP_Error $error, $force = false, $skip_wpcom_verification = false ) { |
| 405 | if ( in_array( $error->get_error_code(), $this->known_errors, true ) && ( $this->should_report_error( $error ) || $force ) ) { |
| 406 | $stored_error = $this->store_error( $error ); |
| 407 | if ( $stored_error ) { |
| 408 | $skip_wpcom_verification ? $this->verify_error( $stored_error ) : $this->send_error_to_wpcom( $stored_error ); |
| 409 | } |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | /** |
| 414 | * Checks the status of the gate |
| 415 | * |
| 416 | * This protects the site (and WPCOM) against over loads. |
| 417 | * |
| 418 | * @since 1.14.2 |
| 419 | * |
| 420 | * @param \WP_Error $error the error object. |
| 421 | * @return boolean $should_report True if gate is open and the error should be reported. |
| 422 | */ |
| 423 | public function should_report_error( \WP_Error $error ) { |
| 424 | if ( defined( '\\JETPACK_DEV_DEBUG' ) && constant( '\\JETPACK_DEV_DEBUG' ) ) { |
| 425 | return true; |
| 426 | } |
| 427 | |
| 428 | /** |
| 429 | * Whether to bypass the gate for the error handling |
| 430 | * |
| 431 | * By default, we only process errors once an hour for each error code. |
| 432 | * This is done to avoid overflows. If you need to disable this gate, you can set this variable to true. |
| 433 | * |
| 434 | * This filter is useful for unit testing |
| 435 | * |
| 436 | * @since 1.14.2 |
| 437 | * |
| 438 | * @param boolean $bypass_gate whether to bypass the gate. Default is false, do not bypass. |
| 439 | */ |
| 440 | $bypass_gate = apply_filters( 'jetpack_connection_bypass_error_reporting_gate', false ); |
| 441 | if ( true === $bypass_gate ) { |
| 442 | return true; |
| 443 | } |
| 444 | |
| 445 | $transient = self::ERROR_REPORTING_GATE . $error->get_error_code(); |
| 446 | |
| 447 | if ( get_transient( $transient ) ) { |
| 448 | return false; |
| 449 | } |
| 450 | |
| 451 | set_transient( $transient, true, HOUR_IN_SECONDS ); |
| 452 | return true; |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * Stores the error in the database so we know there is an issue and can inform the user |
| 457 | * |
| 458 | * @since 1.14.2 |
| 459 | * |
| 460 | * @param \WP_Error $error the error object. |
| 461 | * @return boolean|array False if stored errors were not updated and the error array if it was successfully stored. |
| 462 | */ |
| 463 | public function store_error( \WP_Error $error ) { |
| 464 | |
| 465 | $stored_errors = $this->get_stored_errors(); |
| 466 | $error_array = $this->wp_error_to_array( $error ); |
| 467 | $error_code = $error->get_error_code(); |
| 468 | $user_id = $error_array['user_id']; |
| 469 | |
| 470 | if ( ! isset( $stored_errors[ $error_code ] ) || ! is_array( $stored_errors[ $error_code ] ) ) { |
| 471 | $stored_errors[ $error_code ] = array(); |
| 472 | } |
| 473 | |
| 474 | $stored_errors[ $error_code ][ $user_id ] = $error_array; |
| 475 | |
| 476 | // Let's store a maximum of 5 different user ids for each error code. |
| 477 | $error_code_count = is_countable( $stored_errors[ $error_code ] ) ? count( $stored_errors[ $error_code ] ) : 0; |
| 478 | if ( $error_code_count > 5 ) { |
| 479 | // array_shift will destroy keys here because they are numeric, so manually remove first item. |
| 480 | $keys = array_keys( $stored_errors[ $error_code ] ); |
| 481 | unset( $stored_errors[ $error_code ][ $keys[0] ] ); |
| 482 | } |
| 483 | |
| 484 | if ( update_option( self::STORED_ERRORS_OPTION, $stored_errors ) ) { |
| 485 | return $error_array; |
| 486 | } |
| 487 | |
| 488 | return false; |
| 489 | } |
| 490 | |
| 491 | /** |
| 492 | * Builds action error data for generic JavaScript components. |
| 493 | * |
| 494 | * This helper method creates standardized error_data arrays that work with the generic |
| 495 | * JavaScript error handling components. External plugins (like wpcomsh) can use this |
| 496 | * to ensure their error structures are compatible. |
| 497 | * |
| 498 | * @since 6.16.0 |
| 499 | * |
| 500 | * @param array $args Action configuration arguments - only non-empty values will be included. |
| 501 | * @return array Standardized error_data array for JavaScript components. |
| 502 | */ |
| 503 | public function build_action_error_data( array $args = array() ) { |
| 504 | // Set default values for variants |
| 505 | $args = wp_parse_args( |
| 506 | $args, |
| 507 | array( |
| 508 | 'action_variant' => 'primary', |
| 509 | 'secondary_action_variant' => 'secondary', |
| 510 | ) |
| 511 | ); |
| 512 | |
| 513 | // Start with core data |
| 514 | $error_data = array( |
| 515 | 'blog_id' => \Jetpack_Options::get_option( 'id' ), |
| 516 | ); |
| 517 | |
| 518 | // Validate variant values |
| 519 | $valid_variants = array( 'primary', 'secondary' ); |
| 520 | if ( ! in_array( $args['action_variant'], $valid_variants, true ) ) { |
| 521 | $args['action_variant'] = 'primary'; |
| 522 | } |
| 523 | if ( ! in_array( $args['secondary_action_variant'], $valid_variants, true ) ) { |
| 524 | $args['secondary_action_variant'] = 'secondary'; |
| 525 | } |
| 526 | |
| 527 | // Merge extra_data first, then regular args (so args take precedence) |
| 528 | if ( ! empty( $args['extra_data'] ) && is_array( $args['extra_data'] ) ) { |
| 529 | $error_data = array_merge( $error_data, $args['extra_data'] ); |
| 530 | unset( $args['extra_data'] ); // Remove from args to avoid duplication |
| 531 | } |
| 532 | |
| 533 | // Filter out empty values and merge with error_data |
| 534 | $filtered_args = array_filter( |
| 535 | $args, |
| 536 | function ( $value ) { |
| 537 | return ! empty( $value ); |
| 538 | } |
| 539 | ); |
| 540 | |
| 541 | return array_merge( $error_data, $filtered_args ); |
| 542 | } |
| 543 | |
| 544 | /** |
| 545 | * Builds a standardized error array for the connection error system. |
| 546 | * |
| 547 | * This method creates a consistent error array structure that can be used |
| 548 | * by both internal error handling and external plugins/customizations. |
| 549 | * |
| 550 | * @since 1.14.2 |
| 551 | * |
| 552 | * @param string $error_code The error code identifier. |
| 553 | * @param string $error_message The human-readable error message. |
| 554 | * @param array $error_data Additional error data (optional). |
| 555 | * @param string $user_id The user ID associated with the error (optional). |
| 556 | * @param string $error_type The type of error (optional). |
| 557 | * @return array|false The standardized error array or false on failure. |
| 558 | * Example successful return: |
| 559 | * [ |
| 560 | * 'error_code' => 'invalid_token', |
| 561 | * 'user_id' => '123', |
| 562 | * 'error_message' => 'The token is invalid', |
| 563 | * 'error_data' => ['action' => 'reconnect'], |
| 564 | * 'timestamp' => 1234567890, |
| 565 | * 'nonce' => 'abc123def', |
| 566 | * 'error_type' => 'xmlrpc' |
| 567 | * ] |
| 568 | */ |
| 569 | public function build_error_array( string $error_code, string $error_message, array $error_data = array(), $user_id = '0', string $error_type = '' ) { |
| 570 | // Validate required parameters |
| 571 | if ( empty( $error_code ) || empty( $error_message ) ) { |
| 572 | return false; |
| 573 | } |
| 574 | |
| 575 | // Validate user_id is a string or integer |
| 576 | if ( ! is_string( $user_id ) && ! is_int( $user_id ) ) { |
| 577 | return false; |
| 578 | } |
| 579 | |
| 580 | return array( |
| 581 | 'error_code' => $error_code, |
| 582 | 'user_id' => $user_id, |
| 583 | 'error_message' => $error_message, |
| 584 | 'error_data' => $error_data, |
| 585 | 'timestamp' => time(), |
| 586 | 'nonce' => wp_generate_password( 10, false ), |
| 587 | 'error_type' => $error_type, |
| 588 | ); |
| 589 | } |
| 590 | |
| 591 | /** |
| 592 | * Converts a WP_Error object in the array representation we store in the database |
| 593 | * |
| 594 | * @since 1.14.2 |
| 595 | * |
| 596 | * @param \WP_Error $error the error object. |
| 597 | * @return boolean|array False if error is invalid or the error array |
| 598 | */ |
| 599 | public function wp_error_to_array( \WP_Error $error ) { |
| 600 | |
| 601 | $data = $error->get_error_data(); |
| 602 | |
| 603 | if ( ! isset( $data['signature_details'] ) || ! is_array( $data['signature_details'] ) ) { |
| 604 | return false; |
| 605 | } |
| 606 | |
| 607 | $signature_details = $data['signature_details']; |
| 608 | |
| 609 | if ( ! isset( $signature_details['token'] ) ) { |
| 610 | return false; |
| 611 | } |
| 612 | |
| 613 | $user_id = $this->get_user_id_from_token( $signature_details['token'] ); |
| 614 | |
| 615 | return $this->build_error_array( |
| 616 | $error->get_error_code(), |
| 617 | $error->get_error_message(), |
| 618 | $signature_details, |
| 619 | $user_id, |
| 620 | empty( $data['error_type'] ) ? '' : $data['error_type'] |
| 621 | ); |
| 622 | } |
| 623 | |
| 624 | /** |
| 625 | * Sends the error to WP.com to be verified |
| 626 | * |
| 627 | * @since 1.14.2 |
| 628 | * |
| 629 | * @param array $error_array The array representation of the error as it is stored in the database. |
| 630 | * @return bool |
| 631 | */ |
| 632 | public function send_error_to_wpcom( $error_array ) { |
| 633 | |
| 634 | $blog_id = \Jetpack_Options::get_option( 'id' ); |
| 635 | |
| 636 | $encrypted_data = $this->encrypt_data_to_wpcom( $error_array ); |
| 637 | |
| 638 | if ( false === $encrypted_data ) { |
| 639 | return false; |
| 640 | } |
| 641 | |
| 642 | $args = array( |
| 643 | 'body' => array( |
| 644 | 'error_data' => $encrypted_data, |
| 645 | ), |
| 646 | ); |
| 647 | |
| 648 | // send encrypted data to WP.com Public-API v2. |
| 649 | wp_remote_post( "https://public-api.wordpress.com/wpcom/v2/sites/{$blog_id}/jetpack-report-error/", $args ); |
| 650 | return true; |
| 651 | } |
| 652 | |
| 653 | /** |
| 654 | * Encrypt data to be sent over to WP.com |
| 655 | * |
| 656 | * @since 1.14.2 |
| 657 | * |
| 658 | * @param array|string $data the data to be encoded. |
| 659 | * @return boolean|string The encoded string on success, false on failure |
| 660 | */ |
| 661 | public function encrypt_data_to_wpcom( $data ) { |
| 662 | |
| 663 | try { |
| 664 | // phpcs:disable WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode |
| 665 | // phpcs:disable WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode |
| 666 | $encrypted_data = base64_encode( sodium_crypto_box_seal( wp_json_encode( $data, JSON_UNESCAPED_SLASHES ), base64_decode( JETPACK__ERRORS_PUBLIC_KEY ) ) ); |
| 667 | // phpcs:enable WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode |
| 668 | // phpcs:enable WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode |
| 669 | } catch ( \SodiumException $e ) { |
| 670 | // error encrypting data. |
| 671 | return false; |
| 672 | } |
| 673 | |
| 674 | return $encrypted_data; |
| 675 | } |
| 676 | |
| 677 | /** |
| 678 | * Extracts the user ID from a token |
| 679 | * |
| 680 | * @since 1.14.2 |
| 681 | * |
| 682 | * @param string $token the token used to make the request. |
| 683 | * @return string $the user id or `invalid` if user id not present. |
| 684 | */ |
| 685 | public function get_user_id_from_token( $token ) { |
| 686 | $user_id = 'invalid'; |
| 687 | |
| 688 | if ( $token ) { |
| 689 | $parsed_token = explode( ':', wp_unslash( $token ) ); |
| 690 | |
| 691 | if ( isset( $parsed_token[2] ) && ctype_digit( $parsed_token[2] ) ) { |
| 692 | $user_id = $parsed_token[2]; |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | return $user_id; |
| 697 | } |
| 698 | |
| 699 | /** |
| 700 | * Gets the reported errors stored in the database |
| 701 | * |
| 702 | * @since 1.14.2 |
| 703 | * |
| 704 | * @return array $errors |
| 705 | */ |
| 706 | public function get_stored_errors() { |
| 707 | |
| 708 | $stored_errors = get_option( self::STORED_ERRORS_OPTION ); |
| 709 | |
| 710 | if ( ! is_array( $stored_errors ) ) { |
| 711 | $stored_errors = array(); |
| 712 | } |
| 713 | |
| 714 | $stored_errors = $this->garbage_collector( $stored_errors ); |
| 715 | |
| 716 | return $stored_errors; |
| 717 | } |
| 718 | |
| 719 | /** |
| 720 | * Gets the verified errors stored in the database. |
| 721 | * |
| 722 | * This method retrieves only the errors that are actually stored in the database, |
| 723 | * without applying any filters that might inject additional errors. This is used |
| 724 | * internally by methods that need to modify and store the verified errors back |
| 725 | * to the database to prevent accidentally persisting filtered/injected errors. |
| 726 | * |
| 727 | * @since 1.14.2 |
| 728 | * |
| 729 | * @return array $errors |
| 730 | */ |
| 731 | public function get_verified_errors() { |
| 732 | $verified_errors = get_option( self::STORED_VERIFIED_ERRORS_OPTION ); |
| 733 | |
| 734 | if ( ! is_array( $verified_errors ) ) { |
| 735 | $verified_errors = array(); |
| 736 | } |
| 737 | |
| 738 | $verified_errors = $this->garbage_collector( $verified_errors ); |
| 739 | |
| 740 | return $verified_errors; |
| 741 | } |
| 742 | |
| 743 | /** |
| 744 | * Removes expired errors from the array |
| 745 | * |
| 746 | * This method is called by get_stored_errors and get_verified errors and filters their result |
| 747 | * Whenever a new error is stored to the database or verified, this will be triggered and the |
| 748 | * expired error will be permanently removed from the database |
| 749 | * |
| 750 | * @since 1.14.2 |
| 751 | * |
| 752 | * @param array $errors array of errors as stored in the database. |
| 753 | * @return array |
| 754 | */ |
| 755 | private function garbage_collector( $errors ) { |
| 756 | foreach ( $errors as $error_code => $users ) { |
| 757 | foreach ( $users as $user_id => $error ) { |
| 758 | if ( empty( $error['timestamp'] ) || self::ERROR_LIFE_TIME < time() - (int) $error['timestamp'] ) { |
| 759 | unset( $errors[ $error_code ][ $user_id ] ); |
| 760 | } |
| 761 | } |
| 762 | } |
| 763 | // Clear empty error codes. |
| 764 | $errors = array_filter( |
| 765 | $errors, |
| 766 | function ( $user_errors ) { |
| 767 | return ! empty( $user_errors ); |
| 768 | } |
| 769 | ); |
| 770 | return $errors; |
| 771 | } |
| 772 | |
| 773 | /** |
| 774 | * Delete all stored and verified errors from the database |
| 775 | * |
| 776 | * @since 1.14.2 |
| 777 | * |
| 778 | * @return void |
| 779 | */ |
| 780 | public function delete_all_errors() { |
| 781 | $this->delete_stored_errors(); |
| 782 | $this->delete_verified_errors(); |
| 783 | |
| 784 | // Invalidate cache since we deleted all errors |
| 785 | $this->invalidate_displayable_errors_cache(); |
| 786 | } |
| 787 | |
| 788 | /** |
| 789 | * Delete all stored and verified API errors from the database, leave the non-API errors intact. |
| 790 | * |
| 791 | * @since 1.54.0 |
| 792 | * |
| 793 | * @return void |
| 794 | */ |
| 795 | public function delete_all_api_errors() { |
| 796 | $type_filter = function ( $errors ) { |
| 797 | if ( is_array( $errors ) ) { |
| 798 | foreach ( $errors as $key => $error ) { |
| 799 | if ( ! empty( $error['error_type'] ) && in_array( $error['error_type'], array( 'xmlrpc', 'rest' ), true ) ) { |
| 800 | unset( $errors[ $key ] ); |
| 801 | } |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | return count( $errors ) ? $errors : null; |
| 806 | }; |
| 807 | |
| 808 | $stored_errors = $this->get_stored_errors(); |
| 809 | if ( is_array( $stored_errors ) && count( $stored_errors ) ) { |
| 810 | $stored_errors = array_filter( array_map( $type_filter, $stored_errors ) ); |
| 811 | if ( count( $stored_errors ) ) { |
| 812 | update_option( static::STORED_ERRORS_OPTION, $stored_errors ); |
| 813 | } else { |
| 814 | delete_option( static::STORED_ERRORS_OPTION ); |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | $verified_errors = $this->get_verified_errors(); |
| 819 | if ( is_array( $verified_errors ) && count( $verified_errors ) ) { |
| 820 | $verified_errors = array_filter( array_map( $type_filter, $verified_errors ) ); |
| 821 | if ( count( $verified_errors ) ) { |
| 822 | update_option( static::STORED_VERIFIED_ERRORS_OPTION, $verified_errors ); |
| 823 | } else { |
| 824 | delete_option( static::STORED_VERIFIED_ERRORS_OPTION ); |
| 825 | } |
| 826 | } |
| 827 | |
| 828 | // Invalidate cache since we may have deleted verified errors |
| 829 | $this->invalidate_displayable_errors_cache(); |
| 830 | } |
| 831 | |
| 832 | /** |
| 833 | * Delete all stored and verified errors from the database and returns unfiltered value |
| 834 | * |
| 835 | * This is used to hook into a couple of filters that expect true to not short circuit the disconnection flow |
| 836 | * |
| 837 | * @since 8.9.0 |
| 838 | * |
| 839 | * @param mixed $check The input sent by the filter. |
| 840 | * @return boolean |
| 841 | */ |
| 842 | public function delete_all_errors_and_return_unfiltered_value( $check ) { |
| 843 | $this->delete_all_errors(); |
| 844 | return $check; |
| 845 | } |
| 846 | |
| 847 | /** |
| 848 | * Delete the reported errors stored in the database |
| 849 | * |
| 850 | * @since 1.14.2 |
| 851 | * |
| 852 | * @return boolean True, if option is successfully deleted. False on failure. |
| 853 | */ |
| 854 | public function delete_stored_errors() { |
| 855 | return delete_option( self::STORED_ERRORS_OPTION ); |
| 856 | } |
| 857 | |
| 858 | /** |
| 859 | * Delete the verified errors stored in the database |
| 860 | * |
| 861 | * @since 1.14.2 |
| 862 | * |
| 863 | * @return boolean True, if option is successfully deleted. False on failure. |
| 864 | */ |
| 865 | public function delete_verified_errors() { |
| 866 | return delete_option( self::STORED_VERIFIED_ERRORS_OPTION ); |
| 867 | } |
| 868 | |
| 869 | /** |
| 870 | * Gets an error based on the nonce |
| 871 | * |
| 872 | * Receives a nonce and finds the related error. |
| 873 | * |
| 874 | * @since 1.14.2 |
| 875 | * |
| 876 | * @param string $nonce The nonce created for the error we want to get. |
| 877 | * @return null|array Returns the error array representation or null if error not found. |
| 878 | */ |
| 879 | public function get_error_by_nonce( $nonce ) { |
| 880 | $errors = $this->get_stored_errors(); |
| 881 | foreach ( $errors as $user_group ) { |
| 882 | foreach ( $user_group as $error ) { |
| 883 | if ( $error['nonce'] === $nonce ) { |
| 884 | return $error; |
| 885 | } |
| 886 | } |
| 887 | } |
| 888 | return null; |
| 889 | } |
| 890 | |
| 891 | /** |
| 892 | * Adds an error to the verified error list |
| 893 | * |
| 894 | * @since 1.14.2 |
| 895 | * |
| 896 | * @param array $error The error array, as it was saved in the unverified errors list. |
| 897 | * @return void |
| 898 | */ |
| 899 | public function verify_error( $error ) { |
| 900 | |
| 901 | $verified_errors = $this->get_verified_errors(); |
| 902 | $error_code = $error['error_code']; |
| 903 | $user_id = $error['user_id']; |
| 904 | |
| 905 | if ( ! isset( $verified_errors[ $error_code ] ) ) { |
| 906 | $verified_errors[ $error_code ] = array(); |
| 907 | } |
| 908 | |
| 909 | $verified_errors[ $error_code ][ $user_id ] = $error; |
| 910 | |
| 911 | update_option( self::STORED_VERIFIED_ERRORS_OPTION, $verified_errors ); |
| 912 | |
| 913 | // Invalidate cache since we added a new verified error |
| 914 | $this->invalidate_displayable_errors_cache(); |
| 915 | } |
| 916 | |
| 917 | /** |
| 918 | * Register REST API end point for error handling. |
| 919 | * |
| 920 | * @since 1.14.2 |
| 921 | * |
| 922 | * @return void |
| 923 | */ |
| 924 | public function register_verify_error_endpoint() { |
| 925 | register_rest_route( |
| 926 | 'jetpack/v4', |
| 927 | '/verify_xmlrpc_error', |
| 928 | array( |
| 929 | 'methods' => \WP_REST_Server::CREATABLE, |
| 930 | 'callback' => array( $this, 'verify_xml_rpc_error' ), |
| 931 | 'permission_callback' => '__return_true', |
| 932 | 'args' => array( |
| 933 | 'nonce' => array( |
| 934 | 'required' => true, |
| 935 | 'type' => 'string', |
| 936 | ), |
| 937 | ), |
| 938 | ) |
| 939 | ); |
| 940 | } |
| 941 | |
| 942 | /** |
| 943 | * Handles verification that a xml rpc error is legit and came from WordPres.com |
| 944 | * |
| 945 | * @since 1.14.2 |
| 946 | * |
| 947 | * @param \WP_REST_Request $request The request sent to the WP REST API. |
| 948 | * |
| 949 | * @return boolean |
| 950 | */ |
| 951 | public function verify_xml_rpc_error( \WP_REST_Request $request ) { |
| 952 | $error = $this->get_error_by_nonce( $request['nonce'] ); |
| 953 | |
| 954 | if ( $error ) { |
| 955 | $this->verify_error( $error ); |
| 956 | return new \WP_REST_Response( true, 200 ); |
| 957 | } |
| 958 | |
| 959 | return new \WP_REST_Response( false, 200 ); |
| 960 | } |
| 961 | |
| 962 | /** |
| 963 | * Prints a generic error notice for all connection errors |
| 964 | * |
| 965 | * @since 8.9.0 |
| 966 | * |
| 967 | * @return void |
| 968 | */ |
| 969 | public function generic_admin_notice_error() { |
| 970 | // do not add admin notice to the jetpack dashboard. |
| 971 | global $pagenow; |
| 972 | if ( 'admin.php' === $pagenow || isset( $_GET['page'] ) && 'jetpack' === $_GET['page'] ) { // phpcs:ignore |
| 973 | return; |
| 974 | } |
| 975 | |
| 976 | if ( ! current_user_can( 'jetpack_connect' ) ) { |
| 977 | return; |
| 978 | } |
| 979 | |
| 980 | /** |
| 981 | * Filters the message to be displayed in the admin notices area when there's a connection error. |
| 982 | * |
| 983 | * By default we don't display any errors. |
| 984 | * |
| 985 | * Return an empty value to disable the message. |
| 986 | * |
| 987 | * @since 8.9.0 |
| 988 | * |
| 989 | * @param string $message The error message. |
| 990 | * @param array $errors The array of errors. See Automattic\Jetpack\Connection\Error_Handler for details on the array structure. |
| 991 | */ |
| 992 | $message = apply_filters( 'jetpack_connection_error_notice_message', '', $this->get_displayable_errors() ); |
| 993 | |
| 994 | /** |
| 995 | * Fires inside the admin_notices hook just before displaying the error message for a broken connection. |
| 996 | * |
| 997 | * If you want to disable the default message from being displayed, return an empty value in the jetpack_connection_error_notice_message filter. |
| 998 | * |
| 999 | * @since 8.9.0 |
| 1000 | * |
| 1001 | * @param array $errors The array of errors. See Automattic\Jetpack\Connection\Error_Handler for details on the array structure. |
| 1002 | */ |
| 1003 | do_action( 'jetpack_connection_error_notice', $this->get_displayable_errors() ); |
| 1004 | |
| 1005 | if ( empty( $message ) ) { |
| 1006 | return; |
| 1007 | } |
| 1008 | |
| 1009 | wp_admin_notice( |
| 1010 | esc_html( $message ), |
| 1011 | array( |
| 1012 | 'type' => 'error', |
| 1013 | 'dismissible' => true, |
| 1014 | 'additional_classes' => array( 'jetpack-message', 'jp-connect' ), |
| 1015 | 'attributes' => array( 'style' => 'display:block !important;' ), |
| 1016 | ) |
| 1017 | ); |
| 1018 | } |
| 1019 | |
| 1020 | /** |
| 1021 | * Check REST API response for errors, and report them to WP.com if needed. |
| 1022 | * |
| 1023 | * @see wp_remote_request() For more information on the $http_response array format. |
| 1024 | * @param array|\WP_Error $http_response The response or WP_Error on failure. |
| 1025 | * @param array $auth_data Auth data, allowed keys: `token`, `timestamp`, `nonce`, `body-hash`. |
| 1026 | * @param string $url Request URL. |
| 1027 | * @param string $method Request method. |
| 1028 | * @param string $error_type The source of an error: 'xmlrpc' or 'rest'. |
| 1029 | * |
| 1030 | * @return void |
| 1031 | */ |
| 1032 | public function check_api_response_for_errors( $http_response, $auth_data, $url, $method, $error_type ) { |
| 1033 | if ( 200 === wp_remote_retrieve_response_code( $http_response ) || ! is_array( $auth_data ) || ! $url || ! $method ) { |
| 1034 | return; |
| 1035 | } |
| 1036 | |
| 1037 | $body_raw = wp_remote_retrieve_body( $http_response ); |
| 1038 | if ( ! $body_raw ) { |
| 1039 | return; |
| 1040 | } |
| 1041 | |
| 1042 | $body = json_decode( $body_raw, true ); |
| 1043 | if ( empty( $body['error'] ) || ( ! is_string( $body['error'] ) && ! is_int( $body['error'] ) ) ) { |
| 1044 | return; |
| 1045 | } |
| 1046 | |
| 1047 | $error = new \WP_Error( |
| 1048 | $body['error'], |
| 1049 | empty( $body['message'] ) ? '' : $body['message'], |
| 1050 | array( |
| 1051 | 'signature_details' => array( |
| 1052 | 'token' => empty( $auth_data['token'] ) ? '' : $auth_data['token'], |
| 1053 | 'timestamp' => empty( $auth_data['timestamp'] ) ? '' : $auth_data['timestamp'], |
| 1054 | 'nonce' => empty( $auth_data['nonce'] ) ? '' : $auth_data['nonce'], |
| 1055 | 'body_hash' => empty( $auth_data['body_hash'] ) ? '' : $auth_data['body_hash'], |
| 1056 | 'method' => $method, |
| 1057 | 'url' => $url, |
| 1058 | ), |
| 1059 | 'error_type' => in_array( $error_type, array( 'xmlrpc', 'rest' ), true ) ? $error_type : '', |
| 1060 | ) |
| 1061 | ); |
| 1062 | |
| 1063 | $this->report_error( $error, false, true ); |
| 1064 | } |
| 1065 | |
| 1066 | /** |
| 1067 | * Determines whether external filters are applied to the get_displayable_errors method. |
| 1068 | * |
| 1069 | * @since 6.13.10 |
| 1070 | * |
| 1071 | * @return bool True if external filters are applied, false otherwise. |
| 1072 | */ |
| 1073 | private function has_external_filters() { |
| 1074 | return has_filter( 'jetpack_connection_get_verified_errors' ) && |
| 1075 | $this->should_allow_error_filtering(); |
| 1076 | } |
| 1077 | |
| 1078 | /** |
| 1079 | * Invalidates the cached displayable errors |
| 1080 | * |
| 1081 | * @since 6.13.10 |
| 1082 | * |
| 1083 | * @return void |
| 1084 | */ |
| 1085 | private function invalidate_displayable_errors_cache() { |
| 1086 | $this->cached_displayable_errors = null; |
| 1087 | } |
| 1088 | } |