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PHP Cross Reference of WordPress Trunk (Updated Daily) |
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1 <?php 2 /** 3 * Class for looking up a site's health based on a user's WordPress environment. 4 * 5 * @package WordPress 6 * @subpackage Site_Health 7 * @since 5.2.0 8 */ 9 10 #[AllowDynamicProperties] 11 class WP_Site_Health { 12 private static $instance = null; 13 14 private $is_acceptable_mysql_version; 15 private $is_recommended_mysql_version; 16 17 public $is_mariadb = false; 18 private $mysql_server_version = ''; 19 private $mysql_required_version = '5.5'; 20 private $mysql_recommended_version = '8.0'; 21 private $mariadb_recommended_version = '10.4'; 22 23 public $php_memory_limit; 24 25 public $schedules; 26 public $crons; 27 public $last_missed_cron = null; 28 public $last_late_cron = null; 29 private $timeout_missed_cron = null; 30 private $timeout_late_cron = null; 31 32 /** 33 * WP_Site_Health constructor. 34 * 35 * @since 5.2.0 36 */ 37 public function __construct() { 38 $this->maybe_create_scheduled_event(); 39 40 // Save memory limit before it's affected by wp_raise_memory_limit( 'admin' ). 41 $this->php_memory_limit = ini_get( 'memory_limit' ); 42 43 $this->timeout_late_cron = 0; 44 $this->timeout_missed_cron = - 5 * MINUTE_IN_SECONDS; 45 46 if ( defined( 'DISABLE_WP_CRON' ) && DISABLE_WP_CRON ) { 47 $this->timeout_late_cron = - 15 * MINUTE_IN_SECONDS; 48 $this->timeout_missed_cron = - 1 * HOUR_IN_SECONDS; 49 } 50 51 add_filter( 'admin_body_class', array( $this, 'admin_body_class' ) ); 52 53 add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_scripts' ) ); 54 add_action( 'wp_site_health_scheduled_check', array( $this, 'wp_cron_scheduled_check' ) ); 55 56 add_action( 'site_health_tab_content', array( $this, 'show_site_health_tab' ) ); 57 } 58 59 /** 60 * Outputs the content of a tab in the Site Health screen. 61 * 62 * @since 5.8.0 63 * 64 * @param string $tab Slug of the current tab being displayed. 65 */ 66 public function show_site_health_tab( $tab ) { 67 if ( 'debug' === $tab ) { 68 require_once ABSPATH . 'wp-admin/site-health-info.php'; 69 } 70 } 71 72 /** 73 * Returns an instance of the WP_Site_Health class, or create one if none exist yet. 74 * 75 * @since 5.4.0 76 * 77 * @return WP_Site_Health|null 78 */ 79 public static function get_instance() { 80 if ( null === self::$instance ) { 81 self::$instance = new WP_Site_Health(); 82 } 83 84 return self::$instance; 85 } 86 87 /** 88 * Enqueues the site health scripts. 89 * 90 * @since 5.2.0 91 */ 92 public function enqueue_scripts() { 93 $screen = get_current_screen(); 94 if ( 'site-health' !== $screen->id && 'dashboard' !== $screen->id ) { 95 return; 96 } 97 98 $health_check_js_variables = array( 99 'screen' => $screen->id, 100 'nonce' => array( 101 'site_status' => wp_create_nonce( 'health-check-site-status' ), 102 'site_status_result' => wp_create_nonce( 'health-check-site-status-result' ), 103 ), 104 'site_status' => array( 105 'direct' => array(), 106 'async' => array(), 107 'issues' => array( 108 'good' => 0, 109 'recommended' => 0, 110 'critical' => 0, 111 ), 112 ), 113 ); 114 115 $issue_counts = get_transient( 'health-check-site-status-result' ); 116 117 if ( false !== $issue_counts ) { 118 $issue_counts = json_decode( $issue_counts ); 119 120 $health_check_js_variables['site_status']['issues'] = $issue_counts; 121 } 122 123 if ( 'site-health' === $screen->id && ( ! isset( $_GET['tab'] ) || empty( $_GET['tab'] ) ) ) { 124 $tests = WP_Site_Health::get_tests(); 125 126 // Don't run https test on development environments. 127 if ( $this->is_development_environment() ) { 128 unset( $tests['async']['https_status'] ); 129 } 130 131 foreach ( $tests['direct'] as $test ) { 132 if ( is_string( $test['test'] ) ) { 133 $test_function = sprintf( 134 'get_test_%s', 135 $test['test'] 136 ); 137 138 if ( method_exists( $this, $test_function ) && is_callable( array( $this, $test_function ) ) ) { 139 $health_check_js_variables['site_status']['direct'][] = $this->perform_test( array( $this, $test_function ) ); 140 continue; 141 } 142 } 143 144 if ( is_callable( $test['test'] ) ) { 145 $health_check_js_variables['site_status']['direct'][] = $this->perform_test( $test['test'] ); 146 } 147 } 148 149 foreach ( $tests['async'] as $test ) { 150 if ( is_string( $test['test'] ) ) { 151 $health_check_js_variables['site_status']['async'][] = array( 152 'test' => $test['test'], 153 'has_rest' => ( isset( $test['has_rest'] ) ? $test['has_rest'] : false ), 154 'completed' => false, 155 'headers' => isset( $test['headers'] ) ? $test['headers'] : array(), 156 ); 157 } 158 } 159 } 160 161 wp_localize_script( 'site-health', 'SiteHealth', $health_check_js_variables ); 162 } 163 164 /** 165 * Runs a Site Health test directly. 166 * 167 * @since 5.4.0 168 * 169 * @param callable $callback 170 * @return mixed|void 171 */ 172 private function perform_test( $callback ) { 173 /** 174 * Filters the output of a finished Site Health test. 175 * 176 * @since 5.3.0 177 * 178 * @param array $test_result { 179 * An associative array of test result data. 180 * 181 * @type string $label A label describing the test, and is used as a header in the output. 182 * @type string $status The status of the test, which can be a value of `good`, `recommended` or `critical`. 183 * @type array $badge { 184 * Tests are put into categories which have an associated badge shown, these can be modified and assigned here. 185 * 186 * @type string $label The test label, for example `Performance`. 187 * @type string $color Default `blue`. A string representing a color to use for the label. 188 * } 189 * @type string $description A more descriptive explanation of what the test looks for, and why it is important for the end user. 190 * @type string $actions An action to direct the user to where they can resolve the issue, if one exists. 191 * @type string $test The name of the test being ran, used as a reference point. 192 * } 193 */ 194 return apply_filters( 'site_status_test_result', call_user_func( $callback ) ); 195 } 196 197 /** 198 * Runs the SQL version checks. 199 * 200 * These values are used in later tests, but the part of preparing them is more easily managed 201 * early in the class for ease of access and discovery. 202 * 203 * @since 5.2.0 204 * 205 * @global wpdb $wpdb WordPress database abstraction object. 206 */ 207 private function prepare_sql_data() { 208 global $wpdb; 209 210 $mysql_server_type = $wpdb->db_server_info(); 211 212 $this->mysql_server_version = $wpdb->get_var( 'SELECT VERSION()' ); 213 214 if ( stristr( $mysql_server_type, 'mariadb' ) ) { 215 $this->is_mariadb = true; 216 $this->mysql_recommended_version = $this->mariadb_recommended_version; 217 } 218 219 $this->is_acceptable_mysql_version = version_compare( $this->mysql_required_version, $this->mysql_server_version, '<=' ); 220 $this->is_recommended_mysql_version = version_compare( $this->mysql_recommended_version, $this->mysql_server_version, '<=' ); 221 } 222 223 /** 224 * Tests whether `wp_version_check` is blocked. 225 * 226 * It's possible to block updates with the `wp_version_check` filter, but this can't be checked 227 * during an Ajax call, as the filter is never introduced then. 228 * 229 * This filter overrides a standard page request if it's made by an admin through the Ajax call 230 * with the right query argument to check for this. 231 * 232 * @since 5.2.0 233 */ 234 public function check_wp_version_check_exists() { 235 if ( ! is_admin() || ! is_user_logged_in() || ! current_user_can( 'update_core' ) || ! isset( $_GET['health-check-test-wp_version_check'] ) ) { 236 return; 237 } 238 239 echo ( has_filter( 'wp_version_check', 'wp_version_check' ) ? 'yes' : 'no' ); 240 241 die(); 242 } 243 244 /** 245 * Tests for WordPress version and outputs it. 246 * 247 * Gives various results depending on what kind of updates are available, if any, to encourage 248 * the user to install security updates as a priority. 249 * 250 * @since 5.2.0 251 * 252 * @return array The test result. 253 */ 254 public function get_test_wordpress_version() { 255 $result = array( 256 'label' => '', 257 'status' => '', 258 'badge' => array( 259 'label' => __( 'Performance' ), 260 'color' => 'blue', 261 ), 262 'description' => '', 263 'actions' => '', 264 'test' => 'wordpress_version', 265 ); 266 267 $core_current_version = get_bloginfo( 'version' ); 268 $core_updates = get_core_updates(); 269 270 if ( ! is_array( $core_updates ) ) { 271 $result['status'] = 'recommended'; 272 273 $result['label'] = sprintf( 274 /* translators: %s: Your current version of WordPress. */ 275 __( 'WordPress version %s' ), 276 $core_current_version 277 ); 278 279 $result['description'] = sprintf( 280 '<p>%s</p>', 281 __( 'Unable to check if any new versions of WordPress are available.' ) 282 ); 283 284 $result['actions'] = sprintf( 285 '<a href="%s">%s</a>', 286 esc_url( admin_url( 'update-core.php?force-check=1' ) ), 287 __( 'Check for updates manually' ) 288 ); 289 } else { 290 foreach ( $core_updates as $core => $update ) { 291 if ( 'upgrade' === $update->response ) { 292 $current_version = explode( '.', $core_current_version ); 293 $new_version = explode( '.', $update->version ); 294 295 $current_major = $current_version[0] . '.' . $current_version[1]; 296 $new_major = $new_version[0] . '.' . $new_version[1]; 297 298 $result['label'] = sprintf( 299 /* translators: %s: The latest version of WordPress available. */ 300 __( 'WordPress update available (%s)' ), 301 $update->version 302 ); 303 304 $result['actions'] = sprintf( 305 '<a href="%s">%s</a>', 306 esc_url( admin_url( 'update-core.php' ) ), 307 __( 'Install the latest version of WordPress' ) 308 ); 309 310 if ( $current_major !== $new_major ) { 311 // This is a major version mismatch. 312 $result['status'] = 'recommended'; 313 $result['description'] = sprintf( 314 '<p>%s</p>', 315 __( 'A new version of WordPress is available.' ) 316 ); 317 } else { 318 // This is a minor version, sometimes considered more critical. 319 $result['status'] = 'critical'; 320 $result['badge']['label'] = __( 'Security' ); 321 $result['description'] = sprintf( 322 '<p>%s</p>', 323 __( 'A new minor update is available for your site. Because minor updates often address security, it’s important to install them.' ) 324 ); 325 } 326 } else { 327 $result['status'] = 'good'; 328 $result['label'] = sprintf( 329 /* translators: %s: The current version of WordPress installed on this site. */ 330 __( 'Your version of WordPress (%s) is up to date' ), 331 $core_current_version 332 ); 333 334 $result['description'] = sprintf( 335 '<p>%s</p>', 336 __( 'You are currently running the latest version of WordPress available, keep it up!' ) 337 ); 338 } 339 } 340 } 341 342 return $result; 343 } 344 345 /** 346 * Tests if plugins are outdated, or unnecessary. 347 * 348 * The test checks if your plugins are up to date, and encourages you to remove any 349 * that are not in use. 350 * 351 * @since 5.2.0 352 * 353 * @return array The test result. 354 */ 355 public function get_test_plugin_version() { 356 $result = array( 357 'label' => __( 'Your plugins are all up to date' ), 358 'status' => 'good', 359 'badge' => array( 360 'label' => __( 'Security' ), 361 'color' => 'blue', 362 ), 363 'description' => sprintf( 364 '<p>%s</p>', 365 __( 'Plugins extend your site’s functionality with things like contact forms, ecommerce and much more. That means they have deep access to your site, so it’s vital to keep them up to date.' ) 366 ), 367 'actions' => sprintf( 368 '<p><a href="%s">%s</a></p>', 369 esc_url( admin_url( 'plugins.php' ) ), 370 __( 'Manage your plugins' ) 371 ), 372 'test' => 'plugin_version', 373 ); 374 375 $plugins = get_plugins(); 376 $plugin_updates = get_plugin_updates(); 377 378 $plugins_active = 0; 379 $plugins_total = 0; 380 $plugins_need_update = 0; 381 382 // Loop over the available plugins and check their versions and active state. 383 foreach ( $plugins as $plugin_path => $plugin ) { 384 ++$plugins_total; 385 386 if ( is_plugin_active( $plugin_path ) ) { 387 ++$plugins_active; 388 } 389 390 if ( array_key_exists( $plugin_path, $plugin_updates ) ) { 391 ++$plugins_need_update; 392 } 393 } 394 395 // Add a notice if there are outdated plugins. 396 if ( $plugins_need_update > 0 ) { 397 $result['status'] = 'critical'; 398 399 $result['label'] = __( 'You have plugins waiting to be updated' ); 400 401 $result['description'] .= sprintf( 402 '<p>%s</p>', 403 sprintf( 404 /* translators: %d: The number of outdated plugins. */ 405 _n( 406 'Your site has %d plugin waiting to be updated.', 407 'Your site has %d plugins waiting to be updated.', 408 $plugins_need_update 409 ), 410 $plugins_need_update 411 ) 412 ); 413 414 $result['actions'] .= sprintf( 415 '<p><a href="%s">%s</a></p>', 416 esc_url( network_admin_url( 'plugins.php?plugin_status=upgrade' ) ), 417 __( 'Update your plugins' ) 418 ); 419 } else { 420 if ( 1 === $plugins_active ) { 421 $result['description'] .= sprintf( 422 '<p>%s</p>', 423 __( 'Your site has 1 active plugin, and it is up to date.' ) 424 ); 425 } elseif ( $plugins_active > 0 ) { 426 $result['description'] .= sprintf( 427 '<p>%s</p>', 428 sprintf( 429 /* translators: %d: The number of active plugins. */ 430 _n( 431 'Your site has %d active plugin, and it is up to date.', 432 'Your site has %d active plugins, and they are all up to date.', 433 $plugins_active 434 ), 435 $plugins_active 436 ) 437 ); 438 } else { 439 $result['description'] .= sprintf( 440 '<p>%s</p>', 441 __( 'Your site does not have any active plugins.' ) 442 ); 443 } 444 } 445 446 // Check if there are inactive plugins. 447 if ( $plugins_total > $plugins_active && ! is_multisite() ) { 448 $unused_plugins = $plugins_total - $plugins_active; 449 450 $result['status'] = 'recommended'; 451 452 $result['label'] = __( 'You should remove inactive plugins' ); 453 454 $result['description'] .= sprintf( 455 '<p>%s %s</p>', 456 sprintf( 457 /* translators: %d: The number of inactive plugins. */ 458 _n( 459 'Your site has %d inactive plugin.', 460 'Your site has %d inactive plugins.', 461 $unused_plugins 462 ), 463 $unused_plugins 464 ), 465 __( 'Inactive plugins are tempting targets for attackers. If you are not going to use a plugin, you should consider removing it.' ) 466 ); 467 468 $result['actions'] .= sprintf( 469 '<p><a href="%s">%s</a></p>', 470 esc_url( admin_url( 'plugins.php?plugin_status=inactive' ) ), 471 __( 'Manage inactive plugins' ) 472 ); 473 } 474 475 return $result; 476 } 477 478 /** 479 * Tests if themes are outdated, or unnecessary. 480 * 481 * Checks if your site has a default theme (to fall back on if there is a need), 482 * if your themes are up to date and, finally, encourages you to remove any themes 483 * that are not needed. 484 * 485 * @since 5.2.0 486 * 487 * @return array The test results. 488 */ 489 public function get_test_theme_version() { 490 $result = array( 491 'label' => __( 'Your themes are all up to date' ), 492 'status' => 'good', 493 'badge' => array( 494 'label' => __( 'Security' ), 495 'color' => 'blue', 496 ), 497 'description' => sprintf( 498 '<p>%s</p>', 499 __( 'Themes add your site’s look and feel. It’s important to keep them up to date, to stay consistent with your brand and keep your site secure.' ) 500 ), 501 'actions' => sprintf( 502 '<p><a href="%s">%s</a></p>', 503 esc_url( admin_url( 'themes.php' ) ), 504 __( 'Manage your themes' ) 505 ), 506 'test' => 'theme_version', 507 ); 508 509 $theme_updates = get_theme_updates(); 510 511 $themes_total = 0; 512 $themes_need_updates = 0; 513 $themes_inactive = 0; 514 515 // This value is changed during processing to determine how many themes are considered a reasonable amount. 516 $allowed_theme_count = 1; 517 518 $has_default_theme = false; 519 $has_unused_themes = false; 520 $show_unused_themes = true; 521 $using_default_theme = false; 522 523 // Populate a list of all themes available in the install. 524 $all_themes = wp_get_themes(); 525 $active_theme = wp_get_theme(); 526 527 // If WP_DEFAULT_THEME doesn't exist, fall back to the latest core default theme. 528 $default_theme = wp_get_theme( WP_DEFAULT_THEME ); 529 if ( ! $default_theme->exists() ) { 530 $default_theme = WP_Theme::get_core_default_theme(); 531 } 532 533 if ( $default_theme ) { 534 $has_default_theme = true; 535 536 if ( 537 $active_theme->get_stylesheet() === $default_theme->get_stylesheet() 538 || 539 is_child_theme() && $active_theme->get_template() === $default_theme->get_template() 540 ) { 541 $using_default_theme = true; 542 } 543 } 544 545 foreach ( $all_themes as $theme_slug => $theme ) { 546 ++$themes_total; 547 548 if ( array_key_exists( $theme_slug, $theme_updates ) ) { 549 ++$themes_need_updates; 550 } 551 } 552 553 // If this is a child theme, increase the allowed theme count by one, to account for the parent. 554 if ( is_child_theme() ) { 555 ++$allowed_theme_count; 556 } 557 558 // If there's a default theme installed and not in use, we count that as allowed as well. 559 if ( $has_default_theme && ! $using_default_theme ) { 560 ++$allowed_theme_count; 561 } 562 563 if ( $themes_total > $allowed_theme_count ) { 564 $has_unused_themes = true; 565 $themes_inactive = ( $themes_total - $allowed_theme_count ); 566 } 567 568 // Check if any themes need to be updated. 569 if ( $themes_need_updates > 0 ) { 570 $result['status'] = 'critical'; 571 572 $result['label'] = __( 'You have themes waiting to be updated' ); 573 574 $result['description'] .= sprintf( 575 '<p>%s</p>', 576 sprintf( 577 /* translators: %d: The number of outdated themes. */ 578 _n( 579 'Your site has %d theme waiting to be updated.', 580 'Your site has %d themes waiting to be updated.', 581 $themes_need_updates 582 ), 583 $themes_need_updates 584 ) 585 ); 586 } else { 587 // Give positive feedback about the site being good about keeping things up to date. 588 if ( 1 === $themes_total ) { 589 $result['description'] .= sprintf( 590 '<p>%s</p>', 591 __( 'Your site has 1 installed theme, and it is up to date.' ) 592 ); 593 } elseif ( $themes_total > 0 ) { 594 $result['description'] .= sprintf( 595 '<p>%s</p>', 596 sprintf( 597 /* translators: %d: The number of themes. */ 598 _n( 599 'Your site has %d installed theme, and it is up to date.', 600 'Your site has %d installed themes, and they are all up to date.', 601 $themes_total 602 ), 603 $themes_total 604 ) 605 ); 606 } else { 607 $result['description'] .= sprintf( 608 '<p>%s</p>', 609 __( 'Your site does not have any installed themes.' ) 610 ); 611 } 612 } 613 614 if ( $has_unused_themes && $show_unused_themes && ! is_multisite() ) { 615 616 // This is a child theme, so we want to be a bit more explicit in our messages. 617 if ( $active_theme->parent() ) { 618 // Recommend removing inactive themes, except a default theme, your current one, and the parent theme. 619 $result['status'] = 'recommended'; 620 621 $result['label'] = __( 'You should remove inactive themes' ); 622 623 if ( $using_default_theme ) { 624 $result['description'] .= sprintf( 625 '<p>%s %s</p>', 626 sprintf( 627 /* translators: %d: The number of inactive themes. */ 628 _n( 629 'Your site has %d inactive theme.', 630 'Your site has %d inactive themes.', 631 $themes_inactive 632 ), 633 $themes_inactive 634 ), 635 sprintf( 636 /* translators: 1: The currently active theme. 2: The active theme's parent theme. */ 637 __( 'To enhance your site’s security, you should consider removing any themes you are not using. You should keep your active theme, %1$s, and %2$s, its parent theme.' ), 638 $active_theme->name, 639 $active_theme->parent()->name 640 ) 641 ); 642 } else { 643 $result['description'] .= sprintf( 644 '<p>%s %s</p>', 645 sprintf( 646 /* translators: %d: The number of inactive themes. */ 647 _n( 648 'Your site has %d inactive theme.', 649 'Your site has %d inactive themes.', 650 $themes_inactive 651 ), 652 $themes_inactive 653 ), 654 sprintf( 655 /* translators: 1: The default theme for WordPress. 2: The currently active theme. 3: The active theme's parent theme. */ 656 __( 'To enhance your site’s security, you should consider removing any themes you are not using. You should keep %1$s, the default WordPress theme, %2$s, your active theme, and %3$s, its parent theme.' ), 657 $default_theme ? $default_theme->name : WP_DEFAULT_THEME, 658 $active_theme->name, 659 $active_theme->parent()->name 660 ) 661 ); 662 } 663 } else { 664 // Recommend removing all inactive themes. 665 $result['status'] = 'recommended'; 666 667 $result['label'] = __( 'You should remove inactive themes' ); 668 669 if ( $using_default_theme ) { 670 $result['description'] .= sprintf( 671 '<p>%s %s</p>', 672 sprintf( 673 /* translators: 1: The amount of inactive themes. 2: The currently active theme. */ 674 _n( 675 'Your site has %1$d inactive theme, other than %2$s, your active theme.', 676 'Your site has %1$d inactive themes, other than %2$s, your active theme.', 677 $themes_inactive 678 ), 679 $themes_inactive, 680 $active_theme->name 681 ), 682 __( 'You should consider removing any unused themes to enhance your site’s security.' ) 683 ); 684 } else { 685 $result['description'] .= sprintf( 686 '<p>%s %s</p>', 687 sprintf( 688 /* translators: 1: The amount of inactive themes. 2: The default theme for WordPress. 3: The currently active theme. */ 689 _n( 690 'Your site has %1$d inactive theme, other than %2$s, the default WordPress theme, and %3$s, your active theme.', 691 'Your site has %1$d inactive themes, other than %2$s, the default WordPress theme, and %3$s, your active theme.', 692 $themes_inactive 693 ), 694 $themes_inactive, 695 $default_theme ? $default_theme->name : WP_DEFAULT_THEME, 696 $active_theme->name 697 ), 698 __( 'You should consider removing any unused themes to enhance your site’s security.' ) 699 ); 700 } 701 } 702 } 703 704 // If no default Twenty* theme exists. 705 if ( ! $has_default_theme ) { 706 $result['status'] = 'recommended'; 707 708 $result['label'] = __( 'Have a default theme available' ); 709 710 $result['description'] .= sprintf( 711 '<p>%s</p>', 712 __( 'Your site does not have any default theme. Default themes are used by WordPress automatically if anything is wrong with your chosen theme.' ) 713 ); 714 } 715 716 return $result; 717 } 718 719 /** 720 * Tests if the supplied PHP version is supported. 721 * 722 * @since 5.2.0 723 * 724 * @return array The test results. 725 */ 726 public function get_test_php_version() { 727 $response = wp_check_php_version(); 728 729 $result = array( 730 'label' => sprintf( 731 /* translators: %s: The current PHP version. */ 732 __( 'Your site is running the current version of PHP (%s)' ), 733 PHP_VERSION 734 ), 735 'status' => 'good', 736 'badge' => array( 737 'label' => __( 'Performance' ), 738 'color' => 'blue', 739 ), 740 'description' => sprintf( 741 '<p>%s</p>', 742 sprintf( 743 /* translators: %s: The minimum recommended PHP version. */ 744 __( 'PHP is one of the programming languages used to build WordPress. Newer versions of PHP receive regular security updates and may increase your site’s performance. The minimum recommended version of PHP is %s.' ), 745 $response ? $response['recommended_version'] : '' 746 ) 747 ), 748 'actions' => sprintf( 749 '<p><a href="%s" target="_blank" rel="noopener">%s<span class="screen-reader-text"> %s</span><span aria-hidden="true" class="dashicons dashicons-external"></span></a></p>', 750 esc_url( wp_get_update_php_url() ), 751 __( 'Learn more about updating PHP' ), 752 /* translators: Hidden accessibility text. */ 753 __( '(opens in a new tab)' ) 754 ), 755 'test' => 'php_version', 756 ); 757 758 // PHP is up to date. 759 if ( ! $response || version_compare( PHP_VERSION, $response['recommended_version'], '>=' ) ) { 760 return $result; 761 } 762 763 // The PHP version is older than the recommended version, but still receiving active support. 764 if ( $response['is_supported'] ) { 765 $result['label'] = sprintf( 766 /* translators: %s: The server PHP version. */ 767 __( 'Your site is running on an older version of PHP (%s)' ), 768 PHP_VERSION 769 ); 770 $result['status'] = 'recommended'; 771 772 return $result; 773 } 774 775 /* 776 * The PHP version is still receiving security fixes, but is lower than 777 * the expected minimum version that will be required by WordPress in the near future. 778 */ 779 if ( $response['is_secure'] && $response['is_lower_than_future_minimum'] ) { 780 // The `is_secure` array key name doesn't actually imply this is a secure version of PHP. It only means it receives security updates. 781 782 $result['label'] = sprintf( 783 /* translators: %s: The server PHP version. */ 784 __( 'Your site is running on an outdated version of PHP (%s), which soon will not be supported by WordPress.' ), 785 PHP_VERSION 786 ); 787 788 $result['status'] = 'critical'; 789 $result['badge']['label'] = __( 'Requirements' ); 790 791 return $result; 792 } 793 794 // The PHP version is only receiving security fixes. 795 if ( $response['is_secure'] ) { 796 $result['label'] = sprintf( 797 /* translators: %s: The server PHP version. */ 798 __( 'Your site is running on an older version of PHP (%s), which should be updated' ), 799 PHP_VERSION 800 ); 801 $result['status'] = 'recommended'; 802 803 return $result; 804 } 805 806 // No more security updates for the PHP version, and lower than the expected minimum version required by WordPress. 807 if ( $response['is_lower_than_future_minimum'] ) { 808 $message = sprintf( 809 /* translators: %s: The server PHP version. */ 810 __( 'Your site is running on an outdated version of PHP (%s), which does not receive security updates and soon will not be supported by WordPress.' ), 811 PHP_VERSION 812 ); 813 } else { 814 // No more security updates for the PHP version, must be updated. 815 $message = sprintf( 816 /* translators: %s: The server PHP version. */ 817 __( 'Your site is running on an outdated version of PHP (%s), which does not receive security updates. It should be updated.' ), 818 PHP_VERSION 819 ); 820 } 821 822 $result['label'] = $message; 823 $result['status'] = 'critical'; 824 825 $result['badge']['label'] = __( 'Security' ); 826 827 return $result; 828 } 829 830 /** 831 * Checks if the passed extension or function are available. 832 * 833 * Make the check for available PHP modules into a simple boolean operator for a cleaner test runner. 834 * 835 * @since 5.2.0 836 * @since 5.3.0 The `$constant_name` and `$class_name` parameters were added. 837 * 838 * @param string $extension_name Optional. The extension name to test. Default null. 839 * @param string $function_name Optional. The function name to test. Default null. 840 * @param string $constant_name Optional. The constant name to test for. Default null. 841 * @param string $class_name Optional. The class name to test for. Default null. 842 * @return bool Whether or not the extension and function are available. 843 */ 844 private function test_php_extension_availability( $extension_name = null, $function_name = null, $constant_name = null, $class_name = null ) { 845 // If no extension or function is passed, claim to fail testing, as we have nothing to test against. 846 if ( ! $extension_name && ! $function_name && ! $constant_name && ! $class_name ) { 847 return false; 848 } 849 850 if ( $extension_name && ! extension_loaded( $extension_name ) ) { 851 return false; 852 } 853 854 if ( $function_name && ! function_exists( $function_name ) ) { 855 return false; 856 } 857 858 if ( $constant_name && ! defined( $constant_name ) ) { 859 return false; 860 } 861 862 if ( $class_name && ! class_exists( $class_name ) ) { 863 return false; 864 } 865 866 return true; 867 } 868 869 /** 870 * Tests if required PHP modules are installed on the host. 871 * 872 * This test builds on the recommendations made by the WordPress Hosting Team 873 * as seen at https://make.wordpress.org/hosting/handbook/handbook/server-environment/#php-extensions 874 * 875 * @since 5.2.0 876 * 877 * @return array 878 */ 879 public function get_test_php_extensions() { 880 $result = array( 881 'label' => __( 'Required and recommended modules are installed' ), 882 'status' => 'good', 883 'badge' => array( 884 'label' => __( 'Performance' ), 885 'color' => 'blue', 886 ), 887 'description' => sprintf( 888 '<p>%s</p><p>%s</p>', 889 __( 'PHP modules perform most of the tasks on the server that make your site run. Any changes to these must be made by your server administrator.' ), 890 sprintf( 891 /* translators: 1: Link to the hosting group page about recommended PHP modules. 2: Additional link attributes. 3: Accessibility text. */ 892 __( 'The WordPress Hosting Team maintains a list of those modules, both recommended and required, in <a href="%1$s" %2$s>the team handbook%3$s</a>.' ), 893 /* translators: Localized team handbook, if one exists. */ 894 esc_url( __( 'https://make.wordpress.org/hosting/handbook/handbook/server-environment/#php-extensions' ) ), 895 'target="_blank" rel="noopener"', 896 sprintf( 897 '<span class="screen-reader-text"> %s</span><span aria-hidden="true" class="dashicons dashicons-external"></span>', 898 /* translators: Hidden accessibility text. */ 899 __( '(opens in a new tab)' ) 900 ) 901 ) 902 ), 903 'actions' => '', 904 'test' => 'php_extensions', 905 ); 906 907 $modules = array( 908 'curl' => array( 909 'function' => 'curl_version', 910 'required' => false, 911 ), 912 'dom' => array( 913 'class' => 'DOMNode', 914 'required' => false, 915 ), 916 'exif' => array( 917 'function' => 'exif_read_data', 918 'required' => false, 919 ), 920 'fileinfo' => array( 921 'function' => 'finfo_file', 922 'required' => false, 923 ), 924 'hash' => array( 925 'function' => 'hash', 926 'required' => false, 927 ), 928 'imagick' => array( 929 'extension' => 'imagick', 930 'required' => false, 931 ), 932 'json' => array( 933 'function' => 'json_last_error', 934 'required' => true, 935 ), 936 'mbstring' => array( 937 'function' => 'mb_check_encoding', 938 'required' => false, 939 ), 940 'mysqli' => array( 941 'function' => 'mysqli_connect', 942 'required' => false, 943 ), 944 'libsodium' => array( 945 'constant' => 'SODIUM_LIBRARY_VERSION', 946 'required' => false, 947 'php_bundled_version' => '7.2.0', 948 ), 949 'openssl' => array( 950 'function' => 'openssl_encrypt', 951 'required' => false, 952 ), 953 'pcre' => array( 954 'function' => 'preg_match', 955 'required' => false, 956 ), 957 'mod_xml' => array( 958 'extension' => 'libxml', 959 'required' => false, 960 ), 961 'zip' => array( 962 'class' => 'ZipArchive', 963 'required' => false, 964 ), 965 'filter' => array( 966 'function' => 'filter_list', 967 'required' => false, 968 ), 969 'gd' => array( 970 'extension' => 'gd', 971 'required' => false, 972 'fallback_for' => 'imagick', 973 ), 974 'iconv' => array( 975 'function' => 'iconv', 976 'required' => false, 977 ), 978 'intl' => array( 979 'extension' => 'intl', 980 'required' => false, 981 ), 982 'mcrypt' => array( 983 'extension' => 'mcrypt', 984 'required' => false, 985 'fallback_for' => 'libsodium', 986 ), 987 'simplexml' => array( 988 'extension' => 'simplexml', 989 'required' => false, 990 'fallback_for' => 'mod_xml', 991 ), 992 'xmlreader' => array( 993 'extension' => 'xmlreader', 994 'required' => false, 995 'fallback_for' => 'mod_xml', 996 ), 997 'zlib' => array( 998 'extension' => 'zlib', 999 'required' => false, 1000 'fallback_for' => 'zip', 1001 ), 1002 ); 1003 1004 /** 1005 * Filters the array representing all the modules we wish to test for. 1006 * 1007 * @since 5.2.0 1008 * @since 5.3.0 The `$constant` and `$class` parameters were added. 1009 * 1010 * @param array $modules { 1011 * An associative array of modules to test for. 1012 * 1013 * @type array ...$0 { 1014 * An associative array of module properties used during testing. 1015 * One of either `$function` or `$extension` must be provided, or they will fail by default. 1016 * 1017 * @type string $function Optional. A function name to test for the existence of. 1018 * @type string $extension Optional. An extension to check if is loaded in PHP. 1019 * @type string $constant Optional. A constant name to check for to verify an extension exists. 1020 * @type string $class Optional. A class name to check for to verify an extension exists. 1021 * @type bool $required Is this a required feature or not. 1022 * @type string $fallback_for Optional. The module this module replaces as a fallback. 1023 * } 1024 * } 1025 */ 1026 $modules = apply_filters( 'site_status_test_php_modules', $modules ); 1027 1028 $failures = array(); 1029 1030 foreach ( $modules as $library => $module ) { 1031 $extension_name = ( isset( $module['extension'] ) ? $module['extension'] : null ); 1032 $function_name = ( isset( $module['function'] ) ? $module['function'] : null ); 1033 $constant_name = ( isset( $module['constant'] ) ? $module['constant'] : null ); 1034 $class_name = ( isset( $module['class'] ) ? $module['class'] : null ); 1035 1036 // If this module is a fallback for another function, check if that other function passed. 1037 if ( isset( $module['fallback_for'] ) ) { 1038 /* 1039 * If that other function has a failure, mark this module as required for usual operations. 1040 * If that other function hasn't failed, skip this test as it's only a fallback. 1041 */ 1042 if ( isset( $failures[ $module['fallback_for'] ] ) ) { 1043 $module['required'] = true; 1044 } else { 1045 continue; 1046 } 1047 } 1048 1049 if ( ! $this->test_php_extension_availability( $extension_name, $function_name, $constant_name, $class_name ) 1050 && ( ! isset( $module['php_bundled_version'] ) 1051 || version_compare( PHP_VERSION, $module['php_bundled_version'], '<' ) ) 1052 ) { 1053 if ( $module['required'] ) { 1054 $result['status'] = 'critical'; 1055 1056 $class = 'error'; 1057 /* translators: Hidden accessibility text. */ 1058 $screen_reader = __( 'Error' ); 1059 $message = sprintf( 1060 /* translators: %s: The module name. */ 1061 __( 'The required module, %s, is not installed, or has been disabled.' ), 1062 $library 1063 ); 1064 } else { 1065 $class = 'warning'; 1066 /* translators: Hidden accessibility text. */ 1067 $screen_reader = __( 'Warning' ); 1068 $message = sprintf( 1069 /* translators: %s: The module name. */ 1070 __( 'The optional module, %s, is not installed, or has been disabled.' ), 1071 $library 1072 ); 1073 } 1074 1075 if ( ! $module['required'] && 'good' === $result['status'] ) { 1076 $result['status'] = 'recommended'; 1077 } 1078 1079 $failures[ $library ] = "<span class='dashicons $class'><span class='screen-reader-text'>$screen_reader</span></span> $message"; 1080 } 1081 } 1082 1083 if ( ! empty( $failures ) ) { 1084 $output = '<ul>'; 1085 1086 foreach ( $failures as $failure ) { 1087 $output .= sprintf( 1088 '<li>%s</li>', 1089 $failure 1090 ); 1091 } 1092 1093 $output .= '</ul>'; 1094 } 1095 1096 if ( 'good' !== $result['status'] ) { 1097 if ( 'recommended' === $result['status'] ) { 1098 $result['label'] = __( 'One or more recommended modules are missing' ); 1099 } 1100 if ( 'critical' === $result['status'] ) { 1101 $result['label'] = __( 'One or more required modules are missing' ); 1102 } 1103 1104 $result['description'] .= $output; 1105 } 1106 1107 return $result; 1108 } 1109 1110 /** 1111 * Tests if the PHP default timezone is set to UTC. 1112 * 1113 * @since 5.3.1 1114 * 1115 * @return array The test results. 1116 */ 1117 public function get_test_php_default_timezone() { 1118 $result = array( 1119 'label' => __( 'PHP default timezone is valid' ), 1120 'status' => 'good', 1121 'badge' => array( 1122 'label' => __( 'Performance' ), 1123 'color' => 'blue', 1124 ), 1125 'description' => sprintf( 1126 '<p>%s</p>', 1127 __( 'PHP default timezone was configured by WordPress on loading. This is necessary for correct calculations of dates and times.' ) 1128 ), 1129 'actions' => '', 1130 'test' => 'php_default_timezone', 1131 ); 1132 1133 if ( 'UTC' !== date_default_timezone_get() ) { 1134 $result['status'] = 'critical'; 1135 1136 $result['label'] = __( 'PHP default timezone is invalid' ); 1137 1138 $result['description'] = sprintf( 1139 '<p>%s</p>', 1140 sprintf( 1141 /* translators: %s: date_default_timezone_set() */ 1142 __( 'PHP default timezone was changed after WordPress loading by a %s function call. This interferes with correct calculations of dates and times.' ), 1143 '<code>date_default_timezone_set()</code>' 1144 ) 1145 ); 1146 } 1147 1148 return $result; 1149 } 1150 1151 /** 1152 * Tests if there's an active PHP session that can affect loopback requests. 1153 * 1154 * @since 5.5.0 1155 * 1156 * @return array The test results. 1157 */ 1158 public function get_test_php_sessions() { 1159 $result = array( 1160 'label' => __( 'No PHP sessions detected' ), 1161 'status' => 'good', 1162 'badge' => array( 1163 'label' => __( 'Performance' ), 1164 'color' => 'blue', 1165 ), 1166 'description' => sprintf( 1167 '<p>%s</p>', 1168 sprintf( 1169 /* translators: 1: session_start(), 2: session_write_close() */ 1170 __( 'PHP sessions created by a %1$s function call may interfere with REST API and loopback requests. An active session should be closed by %2$s before making any HTTP requests.' ), 1171 '<code>session_start()</code>', 1172 '<code>session_write_close()</code>' 1173 ) 1174 ), 1175 'test' => 'php_sessions', 1176 ); 1177 1178 if ( function_exists( 'session_status' ) && PHP_SESSION_ACTIVE === session_status() ) { 1179 $result['status'] = 'critical'; 1180 1181 $result['label'] = __( 'An active PHP session was detected' ); 1182 1183 $result['description'] = sprintf( 1184 '<p>%s</p>', 1185 sprintf( 1186 /* translators: 1: session_start(), 2: session_write_close() */ 1187 __( 'A PHP session was created by a %1$s function call. This interferes with REST API and loopback requests. The session should be closed by %2$s before making any HTTP requests.' ), 1188 '<code>session_start()</code>', 1189 '<code>session_write_close()</code>' 1190 ) 1191 ); 1192 } 1193 1194 return $result; 1195 } 1196 1197 /** 1198 * Tests if the SQL server is up to date. 1199 * 1200 * @since 5.2.0 1201 * 1202 * @return array The test results. 1203 */ 1204 public function get_test_sql_server() { 1205 if ( ! $this->mysql_server_version ) { 1206 $this->prepare_sql_data(); 1207 } 1208 1209 $result = array( 1210 'label' => __( 'SQL server is up to date' ), 1211 'status' => 'good', 1212 'badge' => array( 1213 'label' => __( 'Performance' ), 1214 'color' => 'blue', 1215 ), 1216 'description' => sprintf( 1217 '<p>%s</p>', 1218 __( 'The SQL server is a required piece of software for the database WordPress uses to store all your site’s content and settings.' ) 1219 ), 1220 'actions' => sprintf( 1221 '<p><a href="%s" target="_blank" rel="noopener">%s<span class="screen-reader-text"> %s</span><span aria-hidden="true" class="dashicons dashicons-external"></span></a></p>', 1222 /* translators: Localized version of WordPress requirements if one exists. */ 1223 esc_url( __( 'https://wordpress.org/about/requirements/' ) ), 1224 __( 'Learn more about what WordPress requires to run.' ), 1225 /* translators: Hidden accessibility text. */ 1226 __( '(opens in a new tab)' ) 1227 ), 1228 'test' => 'sql_server', 1229 ); 1230 1231 $db_dropin = file_exists( WP_CONTENT_DIR . '/db.php' ); 1232 1233 if ( ! $this->is_recommended_mysql_version ) { 1234 $result['status'] = 'recommended'; 1235 1236 $result['label'] = __( 'Outdated SQL server' ); 1237 1238 $result['description'] .= sprintf( 1239 '<p>%s</p>', 1240 sprintf( 1241 /* translators: 1: The database engine in use (MySQL or MariaDB). 2: Database server recommended version number. */ 1242 __( 'For optimal performance and security reasons, you should consider running %1$s version %2$s or higher. Contact your web hosting company to correct this.' ), 1243 ( $this->is_mariadb ? 'MariaDB' : 'MySQL' ), 1244 $this->mysql_recommended_version 1245 ) 1246 ); 1247 } 1248 1249 if ( ! $this->is_acceptable_mysql_version ) { 1250 $result['status'] = 'critical'; 1251 1252 $result['label'] = __( 'Severely outdated SQL server' ); 1253 $result['badge']['label'] = __( 'Security' ); 1254 1255 $result['description'] .= sprintf( 1256 '<p>%s</p>', 1257 sprintf( 1258 /* translators: 1: The database engine in use (MySQL or MariaDB). 2: Database server minimum version number. */ 1259 __( 'WordPress requires %1$s version %2$s or higher. Contact your web hosting company to correct this.' ), 1260 ( $this->is_mariadb ? 'MariaDB' : 'MySQL' ), 1261 $this->mysql_required_version 1262 ) 1263 ); 1264 } 1265 1266 if ( $db_dropin ) { 1267 $result['description'] .= sprintf( 1268 '<p>%s</p>', 1269 wp_kses( 1270 sprintf( 1271 /* translators: 1: The name of the drop-in. 2: The name of the database engine. */ 1272 __( 'You are using a %1$s drop-in which might mean that a %2$s database is not being used.' ), 1273 '<code>wp-content/db.php</code>', 1274 ( $this->is_mariadb ? 'MariaDB' : 'MySQL' ) 1275 ), 1276 array( 1277 'code' => true, 1278 ) 1279 ) 1280 ); 1281 } 1282 1283 return $result; 1284 } 1285 1286 /** 1287 * Tests if the site can communicate with WordPress.org. 1288 * 1289 * @since 5.2.0 1290 * 1291 * @return array The test results. 1292 */ 1293 public function get_test_dotorg_communication() { 1294 $result = array( 1295 'label' => __( 'Can communicate with WordPress.org' ), 1296 'status' => '', 1297 'badge' => array( 1298 'label' => __( 'Security' ), 1299 'color' => 'blue', 1300 ), 1301 'description' => sprintf( 1302 '<p>%s</p>', 1303 __( 'Communicating with the WordPress servers is used to check for new versions, and to both install and update WordPress core, themes or plugins.' ) 1304 ), 1305 'actions' => '', 1306 'test' => 'dotorg_communication', 1307 ); 1308 1309 $wp_dotorg = wp_remote_get( 1310 'https://api.wordpress.org', 1311 array( 1312 'timeout' => 10, 1313 ) 1314 ); 1315 if ( ! is_wp_error( $wp_dotorg ) ) { 1316 $result['status'] = 'good'; 1317 } else { 1318 $result['status'] = 'critical'; 1319 1320 $result['label'] = __( 'Could not reach WordPress.org' ); 1321 1322 $result['description'] .= sprintf( 1323 '<p>%s</p>', 1324 sprintf( 1325 '<span class="error"><span class="screen-reader-text">%s</span></span> %s', 1326 /* translators: Hidden accessibility text. */ 1327 __( 'Error' ), 1328 sprintf( 1329 /* translators: 1: The IP address WordPress.org resolves to. 2: The error returned by the lookup. */ 1330 __( 'Your site is unable to reach WordPress.org at %1$s, and returned the error: %2$s' ), 1331 gethostbyname( 'api.wordpress.org' ), 1332 $wp_dotorg->get_error_message() 1333 ) 1334 ) 1335 ); 1336 1337 $result['actions'] = sprintf( 1338 '<p><a href="%s" target="_blank" rel="noopener">%s<span class="screen-reader-text"> %s</span><span aria-hidden="true" class="dashicons dashicons-external"></span></a></p>', 1339 /* translators: Localized Support reference. */ 1340 esc_url( __( 'https://wordpress.org/support/forums/' ) ), 1341 __( 'Get help resolving this issue.' ), 1342 /* translators: Hidden accessibility text. */ 1343 __( '(opens in a new tab)' ) 1344 ); 1345 } 1346 1347 return $result; 1348 } 1349 1350 /** 1351 * Tests if debug information is enabled. 1352 * 1353 * When WP_DEBUG is enabled, errors and information may be disclosed to site visitors, 1354 * or logged to a publicly accessible file. 1355 * 1356 * Debugging is also frequently left enabled after looking for errors on a site, 1357 * as site owners do not understand the implications of this. 1358 * 1359 * @since 5.2.0 1360 * 1361 * @return array The test results. 1362 */ 1363 public function get_test_is_in_debug_mode() { 1364 $result = array( 1365 'label' => __( 'Your site is not set to output debug information' ), 1366 'status' => 'good', 1367 'badge' => array( 1368 'label' => __( 'Security' ), 1369 'color' => 'blue', 1370 ), 1371 'description' => sprintf( 1372 '<p>%s</p>', 1373 __( 'Debug mode is often enabled to gather more details about an error or site failure, but may contain sensitive information which should not be available on a publicly available website.' ) 1374 ), 1375 'actions' => sprintf( 1376 '<p><a href="%s" target="_blank" rel="noopener">%s<span class="screen-reader-text"> %s</span><span aria-hidden="true" class="dashicons dashicons-external"></span></a></p>', 1377 /* translators: Documentation explaining debugging in WordPress. */ 1378 esc_url( __( 'https://developer.wordpress.org/advanced-administration/debug/debug-wordpress/' ) ), 1379 __( 'Learn more about debugging in WordPress.' ), 1380 /* translators: Hidden accessibility text. */ 1381 __( '(opens in a new tab)' ) 1382 ), 1383 'test' => 'is_in_debug_mode', 1384 ); 1385 1386 if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) { 1387 if ( defined( 'WP_DEBUG_LOG' ) && WP_DEBUG_LOG ) { 1388 $result['label'] = __( 'Your site is set to log errors to a potentially public file' ); 1389 1390 $result['status'] = str_starts_with( ini_get( 'error_log' ), ABSPATH ) ? 'critical' : 'recommended'; 1391 1392 $result['description'] .= sprintf( 1393 '<p>%s</p>', 1394 sprintf( 1395 /* translators: %s: WP_DEBUG_LOG */ 1396 __( 'The value, %s, has been added to this website’s configuration file. This means any errors on the site will be written to a file which is potentially available to all users.' ), 1397 '<code>WP_DEBUG_LOG</code>' 1398 ) 1399 ); 1400 } 1401 1402 if ( defined( 'WP_DEBUG_DISPLAY' ) && WP_DEBUG_DISPLAY ) { 1403 $result['label'] = __( 'Your site is set to display errors to site visitors' ); 1404 1405 $result['status'] = 'critical'; 1406 1407 // On development environments, set the status to recommended. 1408 if ( $this->is_development_environment() ) { 1409 $result['status'] = 'recommended'; 1410 } 1411 1412 $result['description'] .= sprintf( 1413 '<p>%s</p>', 1414 sprintf( 1415 /* translators: 1: WP_DEBUG_DISPLAY, 2: WP_DEBUG */ 1416 __( 'The value, %1$s, has either been enabled by %2$s or added to your configuration file. This will make errors display on the front end of your site.' ), 1417 '<code>WP_DEBUG_DISPLAY</code>', 1418 '<code>WP_DEBUG</code>' 1419 ) 1420 ); 1421 } 1422 } 1423 1424 return $result; 1425 } 1426 1427 /** 1428 * Tests if the site is serving content over HTTPS. 1429 * 1430 * Many sites have varying degrees of HTTPS support, the most common of which is sites that have it 1431 * enabled, but only if you visit the right site address. 1432 * 1433 * @since 5.2.0 1434 * @since 5.7.0 Updated to rely on {@see wp_is_using_https()} and {@see wp_is_https_supported()}. 1435 * 1436 * @return array The test results. 1437 */ 1438 public function get_test_https_status() { 1439 /* 1440 * Check HTTPS detection results. 1441 */ 1442 $errors = wp_get_https_detection_errors(); 1443 1444 $default_update_url = wp_get_default_update_https_url(); 1445 1446 $result = array( 1447 'label' => __( 'Your website is using an active HTTPS connection' ), 1448 'status' => 'good', 1449 'badge' => array( 1450 'label' => __( 'Security' ), 1451 'color' => 'blue', 1452 ), 1453 'description' => sprintf( 1454 '<p>%s</p>', 1455 __( 'An HTTPS connection is a more secure way of browsing the web. Many services now have HTTPS as a requirement. HTTPS allows you to take advantage of new features that can increase site speed, improve search rankings, and gain the trust of your visitors by helping to protect their online privacy.' ) 1456 ), 1457 'actions' => sprintf( 1458 '<p><a href="%s" target="_blank" rel="noopener">%s<span class="screen-reader-text"> %s</span><span aria-hidden="true" class="dashicons dashicons-external"></span></a></p>', 1459 esc_url( $default_update_url ), 1460 __( 'Learn more about why you should use HTTPS' ), 1461 /* translators: Hidden accessibility text. */ 1462 __( '(opens in a new tab)' ) 1463 ), 1464 'test' => 'https_status', 1465 ); 1466 1467 if ( ! wp_is_using_https() ) { 1468 /* 1469 * If the website is not using HTTPS, provide more information 1470 * about whether it is supported and how it can be enabled. 1471 */ 1472 $result['status'] = 'recommended'; 1473 $result['label'] = __( 'Your website does not use HTTPS' ); 1474 1475 if ( wp_is_site_url_using_https() ) { 1476 if ( is_ssl() ) { 1477 $result['description'] = sprintf( 1478 '<p>%s</p>', 1479 sprintf( 1480 /* translators: %s: URL to Settings > General > Site Address. */ 1481 __( 'You are accessing this website using HTTPS, but your <a href="%s">Site Address</a> is not set up to use HTTPS by default.' ), 1482 esc_url( admin_url( 'options-general.php' ) . '#home' ) 1483 ) 1484 ); 1485 } else { 1486 $result['description'] = sprintf( 1487 '<p>%s</p>', 1488 sprintf( 1489 /* translators: %s: URL to Settings > General > Site Address. */ 1490 __( 'Your <a href="%s">Site Address</a> is not set up to use HTTPS.' ), 1491 esc_url( admin_url( 'options-general.php' ) . '#home' ) 1492 ) 1493 ); 1494 } 1495 } else { 1496 if ( is_ssl() ) { 1497 $result['description'] = sprintf( 1498 '<p>%s</p>', 1499 sprintf( 1500 /* translators: 1: URL to Settings > General > WordPress Address, 2: URL to Settings > General > Site Address. */ 1501 __( 'You are accessing this website using HTTPS, but your <a href="%1$s">WordPress Address</a> and <a href="%2$s">Site Address</a> are not set up to use HTTPS by default.' ), 1502 esc_url( admin_url( 'options-general.php' ) . '#siteurl' ), 1503 esc_url( admin_url( 'options-general.php' ) . '#home' ) 1504 ) 1505 ); 1506 } else { 1507 $result['description'] = sprintf( 1508 '<p>%s</p>', 1509 sprintf( 1510 /* translators: 1: URL to Settings > General > WordPress Address, 2: URL to Settings > General > Site Address. */ 1511 __( 'Your <a href="%1$s">WordPress Address</a> and <a href="%2$s">Site Address</a> are not set up to use HTTPS.' ), 1512 esc_url( admin_url( 'options-general.php' ) . '#siteurl' ), 1513 esc_url( admin_url( 'options-general.php' ) . '#home' ) 1514 ) 1515 ); 1516 } 1517 } 1518 1519 if ( wp_is_https_supported() ) { 1520 $result['description'] .= sprintf( 1521 '<p>%s</p>', 1522 __( 'HTTPS is already supported for your website.' ) 1523 ); 1524 1525 if ( defined( 'WP_HOME' ) || defined( 'WP_SITEURL' ) ) { 1526 $result['description'] .= sprintf( 1527 '<p>%s</p>', 1528 sprintf( 1529 /* translators: 1: wp-config.php, 2: WP_HOME, 3: WP_SITEURL */ 1530 __( 'However, your WordPress Address is currently controlled by a PHP constant and therefore cannot be updated. You need to edit your %1$s and remove or update the definitions of %2$s and %3$s.' ), 1531 '<code>wp-config.php</code>', 1532 '<code>WP_HOME</code>', 1533 '<code>WP_SITEURL</code>' 1534 ) 1535 ); 1536 } elseif ( current_user_can( 'update_https' ) ) { 1537 $default_direct_update_url = add_query_arg( 'action', 'update_https', wp_nonce_url( admin_url( 'site-health.php' ), 'wp_update_https' ) ); 1538 $direct_update_url = wp_get_direct_update_https_url(); 1539 1540 if ( ! empty( $direct_update_url ) ) { 1541 $result['actions'] = sprintf( 1542 '<p class="button-container"><a class="button button-primary" href="%1$s" target="_blank" rel="noopener">%2$s<span class="screen-reader-text"> %3$s</span><span aria-hidden="true" class="dashicons dashicons-external"></span></a></p>', 1543 esc_url( $direct_update_url ), 1544 __( 'Update your site to use HTTPS' ), 1545 /* translators: Hidden accessibility text. */ 1546 __( '(opens in a new tab)' ) 1547 ); 1548 } else { 1549 $result['actions'] = sprintf( 1550 '<p class="button-container"><a class="button button-primary" href="%1$s">%2$s</a></p>', 1551 esc_url( $default_direct_update_url ), 1552 __( 'Update your site to use HTTPS' ) 1553 ); 1554 } 1555 } 1556 } else { 1557 // If host-specific "Update HTTPS" URL is provided, include a link. 1558 $update_url = wp_get_update_https_url(); 1559 if ( $update_url !== $default_update_url ) { 1560 $result['description'] .= sprintf( 1561 '<p><a href="%s" target="_blank" rel="noopener">%s<span class="screen-reader-text"> %s</span><span aria-hidden="true" class="dashicons dashicons-external"></span></a></p>', 1562 esc_url( $update_url ), 1563 __( 'Talk to your web host about supporting HTTPS for your website.' ), 1564 /* translators: Hidden accessibility text. */ 1565 __( '(opens in a new tab)' ) 1566 ); 1567 } else { 1568 $result['description'] .= sprintf( 1569 '<p>%s</p>', 1570 __( 'Talk to your web host about supporting HTTPS for your website.' ) 1571 ); 1572 } 1573 } 1574 } 1575 1576 return $result; 1577 } 1578 1579 /** 1580 * Checks if the HTTP API can handle SSL/TLS requests. 1581 * 1582 * @since 5.2.0 1583 * 1584 * @return array The test result. 1585 */ 1586 public function get_test_ssl_support() { 1587 $result = array( 1588 'label' => '', 1589 'status' => '', 1590 'badge' => array( 1591 'label' => __( 'Security' ), 1592 'color' => 'blue', 1593 ), 1594 'description' => sprintf( 1595 '<p>%s</p>', 1596 __( 'Securely communicating between servers are needed for transactions such as fetching files, conducting sales on store sites, and much more.' ) 1597 ), 1598 'actions' => '', 1599 'test' => 'ssl_support', 1600 ); 1601 1602 $supports_https = wp_http_supports( array( 'ssl' ) ); 1603 1604 if ( $supports_https ) { 1605 $result['status'] = 'good'; 1606 1607 $result['label'] = __( 'Your site can communicate securely with other services' ); 1608 } else { 1609 $result['status'] = 'critical'; 1610 1611 $result['label'] = __( 'Your site is unable to communicate securely with other services' ); 1612 1613 $result['description'] .= sprintf( 1614 '<p>%s</p>', 1615 __( 'Talk to your web host about OpenSSL support for PHP.' ) 1616 ); 1617 } 1618 1619 return $result; 1620 } 1621 1622 /** 1623 * Tests if scheduled events run as intended. 1624 * 1625 * If scheduled events are not running, this may indicate something with WP_Cron is not working 1626 * as intended, or that there are orphaned events hanging around from older code. 1627 * 1628 * @since 5.2.0 1629 * 1630 * @return array The test results. 1631 */ 1632 public function get_test_scheduled_events() { 1633 $result = array( 1634 'label' => __( 'Scheduled events are running' ), 1635 'status' => 'good', 1636 'badge' => array( 1637 'label' => __( 'Performance' ), 1638 'color' => 'blue', 1639 ), 1640 'description' => sprintf( 1641 '<p>%s</p>', 1642 __( 'Scheduled events are what periodically looks for updates to plugins, themes and WordPress itself. It is also what makes sure scheduled posts are published on time. It may also be used by various plugins to make sure that planned actions are executed.' ) 1643 ), 1644 'actions' => '', 1645 'test' => 'scheduled_events', 1646 ); 1647 1648 $this->wp_schedule_test_init(); 1649 1650 if ( is_wp_error( $this->has_missed_cron() ) ) { 1651 $result['status'] = 'critical'; 1652 1653 $result['label'] = __( 'It was not possible to check your scheduled events' ); 1654 1655 $result['description'] = sprintf( 1656 '<p>%s</p>', 1657 sprintf( 1658 /* translators: %s: The error message returned while from the cron scheduler. */ 1659 __( 'While trying to test your site’s scheduled events, the following error was returned: %s' ), 1660 $this->has_missed_cron()->get_error_message() 1661 ) 1662 ); 1663 } elseif ( $this->has_missed_cron() ) { 1664 $result['status'] = 'recommended'; 1665 1666 $result['label'] = __( 'A scheduled event has failed' ); 1667 1668 $result['description'] = sprintf( 1669 '<p>%s</p>', 1670 sprintf( 1671 /* translators: %s: The name of the failed cron event. */ 1672 __( 'The scheduled event, %s, failed to run. Your site still works, but this may indicate that scheduling posts or automated updates may not work as intended.' ), 1673 $this->last_missed_cron 1674 ) 1675 ); 1676 } elseif ( $this->has_late_cron() ) { 1677 $result['status'] = 'recommended'; 1678 1679 $result['label'] = __( 'A scheduled event is late' ); 1680 1681 $result['description'] = sprintf( 1682 '<p>%s</p>', 1683 sprintf( 1684 /* translators: %s: The name of the late cron event. */ 1685 __( 'The scheduled event, %s, is late to run. Your site still works, but this may indicate that scheduling posts or automated updates may not work as intended.' ), 1686 $this->last_late_cron 1687 ) 1688 ); 1689 } 1690 1691 return $result; 1692 } 1693 1694 /** 1695 * Tests if WordPress can run automated background updates. 1696 * 1697 * Background updates in WordPress are primarily used for minor releases and security updates. 1698 * It's important to either have these working, or be aware that they are intentionally disabled 1699 * for whatever reason. 1700 * 1701 * @since 5.2.0 1702 * 1703 * @return array The test results. 1704 */ 1705 public function get_test_background_updates() { 1706 $result = array( 1707 'label' => __( 'Background updates are working' ), 1708 'status' => 'good', 1709 'badge' => array( 1710 'label' => __( 'Security' ), 1711 'color' => 'blue', 1712 ), 1713 'description' => sprintf( 1714 '<p>%s</p>', 1715 __( 'Background updates ensure that WordPress can auto-update if a security update is released for the version you are currently using.' ) 1716 ), 1717 'actions' => '', 1718 'test' => 'background_updates', 1719 ); 1720 1721 if ( ! class_exists( 'WP_Site_Health_Auto_Updates' ) ) { 1722 require_once ABSPATH . 'wp-admin/includes/class-wp-site-health-auto-updates.php'; 1723 } 1724 1725 /* 1726 * Run the auto-update tests in a separate class, 1727 * as there are many considerations to be made. 1728 */ 1729 $automatic_updates = new WP_Site_Health_Auto_Updates(); 1730 $tests = $automatic_updates->run_tests(); 1731 1732 $output = '<ul>'; 1733 1734 foreach ( $tests as $test ) { 1735 /* translators: Hidden accessibility text. */ 1736 $severity_string = __( 'Passed' ); 1737 1738 if ( 'fail' === $test->severity ) { 1739 $result['label'] = __( 'Background updates are not working as expected' ); 1740 1741 $result['status'] = 'critical'; 1742 1743 /* translators: Hidden accessibility text. */ 1744 $severity_string = __( 'Error' ); 1745 } 1746 1747 if ( 'warning' === $test->severity && 'good' === $result['status'] ) { 1748 $result['label'] = __( 'Background updates may not be working properly' ); 1749 1750 $result['status'] = 'recommended'; 1751 1752 /* translators: Hidden accessibility text. */ 1753 $severity_string = __( 'Warning' ); 1754 } 1755 1756 $output .= sprintf( 1757 '<li><span class="dashicons %s"><span class="screen-reader-text">%s</span></span> %s</li>', 1758 esc_attr( $test->severity ), 1759 $severity_string, 1760 $test->description 1761 ); 1762 } 1763 1764 $output .= '</ul>'; 1765 1766 if ( 'good' !== $result['status'] ) { 1767 $result['description'] .= $output; 1768 } 1769 1770 return $result; 1771 } 1772 1773 /** 1774 * Tests if plugin and theme auto-updates appear to be configured correctly. 1775 * 1776 * @since 5.5.0 1777 * 1778 * @return array The test results. 1779 */ 1780 public function get_test_plugin_theme_auto_updates() { 1781 $result = array( 1782 'label' => __( 'Plugin and theme auto-updates appear to be configured correctly' ), 1783 'status' => 'good', 1784 'badge' => array( 1785 'label' => __( 'Security' ), 1786 'color' => 'blue', 1787 ), 1788 'description' => sprintf( 1789 '<p>%s</p>', 1790 __( 'Plugin and theme auto-updates ensure that the latest versions are always installed.' ) 1791 ), 1792 'actions' => '', 1793 'test' => 'plugin_theme_auto_updates', 1794 ); 1795 1796 $check_plugin_theme_updates = $this->detect_plugin_theme_auto_update_issues(); 1797 1798 $result['status'] = $check_plugin_theme_updates->status; 1799 1800 if ( 'good' !== $result['status'] ) { 1801 $result['label'] = __( 'Your site may have problems auto-updating plugins and themes' ); 1802 1803 $result['description'] .= sprintf( 1804 '<p>%s</p>', 1805 $check_plugin_theme_updates->message 1806 ); 1807 } 1808 1809 return $result; 1810 } 1811 1812 /** 1813 * Tests available disk space for updates. 1814 * 1815 * @since 6.3.0 1816 * 1817 * @return array The test results. 1818 */ 1819 public function get_test_available_updates_disk_space() { 1820 $available_space = function_exists( 'disk_free_space' ) ? @disk_free_space( WP_CONTENT_DIR . '/upgrade/' ) : false; 1821 1822 $result = array( 1823 'label' => __( 'Disk space available to safely perform updates' ), 1824 'status' => 'good', 1825 'badge' => array( 1826 'label' => __( 'Security' ), 1827 'color' => 'blue', 1828 ), 1829 'description' => sprintf( 1830 /* translators: %s: Available disk space in MB or GB. */ 1831 '<p>' . __( '%s available disk space was detected, update routines can be performed safely.' ) . '</p>', 1832 size_format( $available_space ) 1833 ), 1834 'actions' => '', 1835 'test' => 'available_updates_disk_space', 1836 ); 1837 1838 if ( false === $available_space ) { 1839 $result['description'] = __( 'Could not determine available disk space for updates.' ); 1840 $result['status'] = 'recommended'; 1841 } elseif ( $available_space < 20 * MB_IN_BYTES ) { 1842 $result['description'] = sprintf( 1843 /* translators: %s: Available disk space in MB or GB. */ 1844 __( 'Available disk space is critically low, less than %s available. Proceed with caution, updates may fail.' ), 1845 size_format( 20 * MB_IN_BYTES ) 1846 ); 1847 $result['status'] = 'critical'; 1848 } elseif ( $available_space < 100 * MB_IN_BYTES ) { 1849 $result['description'] = sprintf( 1850 /* translators: %s: Available disk space in MB or GB. */ 1851 __( 'Available disk space is low, less than %s available.' ), 1852 size_format( 100 * MB_IN_BYTES ) 1853 ); 1854 $result['status'] = 'recommended'; 1855 } 1856 1857 return $result; 1858 } 1859 1860 /** 1861 * Tests if plugin and theme temporary backup directories are writable or can be created. 1862 * 1863 * @since 6.3.0 1864 * 1865 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1866 * 1867 * @return array The test results. 1868 */ 1869 public function get_test_update_temp_backup_writable() { 1870 global $wp_filesystem; 1871 1872 $result = array( 1873 'label' => __( 'Plugin and theme temporary backup directory is writable' ), 1874 'status' => 'good', 1875 'badge' => array( 1876 'label' => __( 'Security' ), 1877 'color' => 'blue', 1878 ), 1879 'description' => sprintf( 1880 /* translators: %s: wp-content/upgrade-temp-backup */ 1881 '<p>' . __( 'The %s directory used to improve the stability of plugin and theme updates is writable.' ) . '</p>', 1882 '<code>wp-content/upgrade-temp-backup</code>' 1883 ), 1884 'actions' => '', 1885 'test' => 'update_temp_backup_writable', 1886 ); 1887 1888 if ( ! function_exists( 'WP_Filesystem' ) ) { 1889 require_once ABSPATH . '/wp-admin/includes/file.php'; 1890 } 1891 1892 ob_start(); 1893 $credentials = request_filesystem_credentials( '' ); 1894 ob_end_clean(); 1895 1896 if ( false === $credentials || ! WP_Filesystem( $credentials ) ) { 1897 $result['status'] = 'recommended'; 1898 $result['label'] = __( 'Could not access filesystem' ); 1899 $result['description'] = __( 'Unable to connect to the filesystem. Please confirm your credentials.' ); 1900 return $result; 1901 } 1902 1903 $wp_content = $wp_filesystem->wp_content_dir(); 1904 1905 if ( ! $wp_content ) { 1906 $result['status'] = 'critical'; 1907 $result['label'] = __( 'Unable to locate WordPress content directory' ); 1908 $result['description'] = sprintf( 1909 /* translators: %s: wp-content */ 1910 '<p>' . __( 'The %s directory cannot be located.' ) . '</p>', 1911 '<code>wp-content</code>' 1912 ); 1913 return $result; 1914 } 1915 1916 $upgrade_dir_exists = $wp_filesystem->is_dir( "$wp_content/upgrade" ); 1917 $upgrade_dir_is_writable = $wp_filesystem->is_writable( "$wp_content/upgrade" ); 1918 $backup_dir_exists = $wp_filesystem->is_dir( "$wp_content/upgrade-temp-backup" ); 1919 $backup_dir_is_writable = $wp_filesystem->is_writable( "$wp_content/upgrade-temp-backup" ); 1920 1921 $plugins_dir_exists = $wp_filesystem->is_dir( "$wp_content/upgrade-temp-backup/plugins" ); 1922 $plugins_dir_is_writable = $wp_filesystem->is_writable( "$wp_content/upgrade-temp-backup/plugins" ); 1923 $themes_dir_exists = $wp_filesystem->is_dir( "$wp_content/upgrade-temp-backup/themes" ); 1924 $themes_dir_is_writable = $wp_filesystem->is_writable( "$wp_content/upgrade-temp-backup/themes" ); 1925 1926 if ( $plugins_dir_exists && ! $plugins_dir_is_writable && $themes_dir_exists && ! $themes_dir_is_writable ) { 1927 $result['status'] = 'critical'; 1928 $result['label'] = __( 'Plugin and theme temporary backup directories exist but are not writable' ); 1929 $result['description'] = sprintf( 1930 /* translators: 1: wp-content/upgrade-temp-backup/plugins, 2: wp-content/upgrade-temp-backup/themes. */ 1931 '<p>' . __( 'The %1$s and %2$s directories exist but are not writable. These directories are used to improve the stability of plugin updates. Please make sure the server has write permissions to these directories.' ) . '</p>', 1932 '<code>wp-content/upgrade-temp-backup/plugins</code>', 1933 '<code>wp-content/upgrade-temp-backup/themes</code>' 1934 ); 1935 return $result; 1936 } 1937 1938 if ( $plugins_dir_exists && ! $plugins_dir_is_writable ) { 1939 $result['status'] = 'critical'; 1940 $result['label'] = __( 'Plugin temporary backup directory exists but is not writable' ); 1941 $result['description'] = sprintf( 1942 /* translators: %s: wp-content/upgrade-temp-backup/plugins */ 1943 '<p>' . __( 'The %s directory exists but is not writable. This directory is used to improve the stability of plugin updates. Please make sure the server has write permissions to this directory.' ) . '</p>', 1944 '<code>wp-content/upgrade-temp-backup/plugins</code>' 1945 ); 1946 return $result; 1947 } 1948 1949 if ( $themes_dir_exists && ! $themes_dir_is_writable ) { 1950 $result['status'] = 'critical'; 1951 $result['label'] = __( 'Theme temporary backup directory exists but is not writable' ); 1952 $result['description'] = sprintf( 1953 /* translators: %s: wp-content/upgrade-temp-backup/themes */ 1954 '<p>' . __( 'The %s directory exists but is not writable. This directory is used to improve the stability of theme updates. Please make sure the server has write permissions to this directory.' ) . '</p>', 1955 '<code>wp-content/upgrade-temp-backup/themes</code>' 1956 ); 1957 return $result; 1958 } 1959 1960 if ( ( ! $plugins_dir_exists || ! $themes_dir_exists ) && $backup_dir_exists && ! $backup_dir_is_writable ) { 1961 $result['status'] = 'critical'; 1962 $result['label'] = __( 'The temporary backup directory exists but is not writable' ); 1963 $result['description'] = sprintf( 1964 /* translators: %s: wp-content/upgrade-temp-backup */ 1965 '<p>' . __( 'The %s directory exists but is not writable. This directory is used to improve the stability of plugin and theme updates. Please make sure the server has write permissions to this directory.' ) . '</p>', 1966 '<code>wp-content/upgrade-temp-backup</code>' 1967 ); 1968 return $result; 1969 } 1970 1971 if ( ! $backup_dir_exists && $upgrade_dir_exists && ! $upgrade_dir_is_writable ) { 1972 $result['status'] = 'critical'; 1973 $result['label'] = __( 'The upgrade directory exists but is not writable' ); 1974 $result['description'] = sprintf( 1975 /* translators: %s: wp-content/upgrade */ 1976 '<p>' . __( 'The %s directory exists but is not writable. This directory is used for plugin and theme updates. Please make sure the server has write permissions to this directory.' ) . '</p>', 1977 '<code>wp-content/upgrade</code>' 1978 ); 1979 return $result; 1980 } 1981 1982 if ( ! $upgrade_dir_exists && ! $wp_filesystem->is_writable( $wp_content ) ) { 1983 $result['status'] = 'critical'; 1984 $result['label'] = __( 'The upgrade directory cannot be created' ); 1985 $result['description'] = sprintf( 1986 /* translators: 1: wp-content/upgrade, 2: wp-content. */ 1987 '<p>' . __( 'The %1$s directory does not exist, and the server does not have write permissions in %2$s to create it. This directory is used for plugin and theme updates. Please make sure the server has write permissions in %2$s.' ) . '</p>', 1988 '<code>wp-content/upgrade</code>', 1989 '<code>wp-content</code>' 1990 ); 1991 return $result; 1992 } 1993 1994 return $result; 1995 } 1996 1997 /** 1998 * Tests if loopbacks work as expected. 1999 * 2000 * A loopback is when WordPress queries itself, for example to start a new WP_Cron instance, 2001 * or when editing a plugin or theme. This has shown itself to be a recurring issue, 2002 * as code can very easily break this interaction. 2003 * 2004 * @since 5.2.0 2005 * 2006 * @return array The test results. 2007 */ 2008 public function get_test_loopback_requests() { 2009 $result = array( 2010 'label' => __( 'Your site can perform loopback requests' ), 2011 'status' => 'good', 2012 'badge' => array( 2013 'label' => __( 'Performance' ), 2014 'color' => 'blue', 2015 ), 2016 'description' => sprintf( 2017 '<p>%s</p>', 2018 __( 'Loopback requests are used to run scheduled events, and are also used by the built-in editors for themes and plugins to verify code stability.' ) 2019 ), 2020 'actions' => '', 2021 'test' => 'loopback_requests', 2022 ); 2023 2024 $check_loopback = $this->can_perform_loopback(); 2025 2026 $result['status'] = $check_loopback->status; 2027 2028 if ( 'good' !== $result['status'] ) { 2029 $result['label'] = __( 'Your site could not complete a loopback request' ); 2030 2031 $result['description'] .= sprintf( 2032 '<p>%s</p>', 2033 $check_loopback->message 2034 ); 2035 } 2036 2037 return $result; 2038 } 2039 2040 /** 2041 * Tests if HTTP requests are blocked. 2042 * 2043 * It's possible to block all outgoing communication (with the possibility of allowing certain 2044 * hosts) via the HTTP API. This may create problems for users as many features are running as 2045 * services these days. 2046 * 2047 * @since 5.2.0 2048 * 2049 * @return array The test results. 2050 */ 2051 public function get_test_http_requests() { 2052 $result = array( 2053 'label' => __( 'HTTP requests seem to be working as expected' ), 2054 'status' => 'good', 2055 'badge' => array( 2056 'label' => __( 'Performance' ), 2057 'color' => 'blue', 2058 ), 2059 'description' => sprintf( 2060 '<p>%s</p>', 2061 __( 'It is possible for site maintainers to block all, or some, communication to other sites and services. If set up incorrectly, this may prevent plugins and themes from working as intended.' ) 2062 ), 2063 'actions' => '', 2064 'test' => 'http_requests', 2065 ); 2066 2067 $blocked = false; 2068 $hosts = array(); 2069 2070 if ( defined( 'WP_HTTP_BLOCK_EXTERNAL' ) && WP_HTTP_BLOCK_EXTERNAL ) { 2071 $blocked = true; 2072 } 2073 2074 if ( defined( 'WP_ACCESSIBLE_HOSTS' ) ) { 2075 $hosts = explode( ',', WP_ACCESSIBLE_HOSTS ); 2076 } 2077 2078 if ( $blocked && 0 === count( $hosts ) ) { 2079 $result['status'] = 'critical'; 2080 2081 $result['label'] = __( 'HTTP requests are blocked' ); 2082 2083 $result['description'] .= sprintf( 2084 '<p>%s</p>', 2085 sprintf( 2086 /* translators: %s: Name of the constant used. */ 2087 __( 'HTTP requests have been blocked by the %s constant, with no allowed hosts.' ), 2088 '<code>WP_HTTP_BLOCK_EXTERNAL</code>' 2089 ) 2090 ); 2091 } 2092 2093 if ( $blocked && 0 < count( $hosts ) ) { 2094 $result['status'] = 'recommended'; 2095 2096 $result['label'] = __( 'HTTP requests are partially blocked' ); 2097 2098 $result['description'] .= sprintf( 2099 '<p>%s</p>', 2100 sprintf( 2101 /* translators: 1: Name of the constant used. 2: List of allowed hostnames. */ 2102 __( 'HTTP requests have been blocked by the %1$s constant, with some allowed hosts: %2$s.' ), 2103 '<code>WP_HTTP_BLOCK_EXTERNAL</code>', 2104 implode( ',', $hosts ) 2105 ) 2106 ); 2107 } 2108 2109 return $result; 2110 } 2111 2112 /** 2113 * Tests if the REST API is accessible. 2114 * 2115 * Various security measures may block the REST API from working, or it may have been disabled in general. 2116 * This is required for the new block editor to work, so we explicitly test for this. 2117 * 2118 * @since 5.2.0 2119 * 2120 * @return array The test results. 2121 */ 2122 public function get_test_rest_availability() { 2123 $result = array( 2124 'label' => __( 'The REST API is available' ), 2125 'status' => 'good', 2126 'badge' => array( 2127 'label' => __( 'Performance' ), 2128 'color' => 'blue', 2129 ), 2130 'description' => sprintf( 2131 '<p>%s</p>', 2132 __( 'The REST API is one way that WordPress and other applications communicate with the server. For example, the block editor screen relies on the REST API to display and save your posts and pages.' ) 2133 ), 2134 'actions' => '', 2135 'test' => 'rest_availability', 2136 ); 2137 2138 $cookies = wp_unslash( $_COOKIE ); 2139 $timeout = 10; // 10 seconds. 2140 $headers = array( 2141 'Cache-Control' => 'no-cache', 2142 'X-WP-Nonce' => wp_create_nonce( 'wp_rest' ), 2143 ); 2144 /** This filter is documented in wp-includes/class-wp-http-streams.php */ 2145 $sslverify = apply_filters( 'https_local_ssl_verify', false ); 2146 2147 // Include Basic auth in loopback requests. 2148 if ( isset( $_SERVER['PHP_AUTH_USER'] ) && isset( $_SERVER['PHP_AUTH_PW'] ) ) { 2149 $headers['Authorization'] = 'Basic ' . base64_encode( wp_unslash( $_SERVER['PHP_AUTH_USER'] ) . ':' . wp_unslash( $_SERVER['PHP_AUTH_PW'] ) ); 2150 } 2151 2152 $url = rest_url( 'wp/v2/types/post' ); 2153 2154 // The context for this is editing with the new block editor. 2155 $url = add_query_arg( 2156 array( 2157 'context' => 'edit', 2158 ), 2159 $url 2160 ); 2161 2162 $r = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout', 'sslverify' ) ); 2163 2164 if ( is_wp_error( $r ) ) { 2165 $result['status'] = 'critical'; 2166 2167 $result['label'] = __( 'The REST API encountered an error' ); 2168 2169 $result['description'] .= sprintf( 2170 '<p>%s</p><p>%s<br>%s</p>', 2171 __( 'When testing the REST API, an error was encountered:' ), 2172 sprintf( 2173 // translators: %s: The REST API URL. 2174 __( 'REST API Endpoint: %s' ), 2175 $url 2176 ), 2177 sprintf( 2178 // translators: 1: The WordPress error code. 2: The WordPress error message. 2179 __( 'REST API Response: (%1$s) %2$s' ), 2180 $r->get_error_code(), 2181 $r->get_error_message() 2182 ) 2183 ); 2184 } elseif ( 200 !== wp_remote_retrieve_response_code( $r ) ) { 2185 $result['status'] = 'recommended'; 2186 2187 $result['label'] = __( 'The REST API encountered an unexpected result' ); 2188 2189 $result['description'] .= sprintf( 2190 '<p>%s</p><p>%s<br>%s</p>', 2191 __( 'When testing the REST API, an unexpected result was returned:' ), 2192 sprintf( 2193 // translators: %s: The REST API URL. 2194 __( 'REST API Endpoint: %s' ), 2195 $url 2196 ), 2197 sprintf( 2198 // translators: 1: The WordPress error code. 2: The HTTP status code error message. 2199 __( 'REST API Response: (%1$s) %2$s' ), 2200 wp_remote_retrieve_response_code( $r ), 2201 wp_remote_retrieve_response_message( $r ) 2202 ) 2203 ); 2204 } else { 2205 $json = json_decode( wp_remote_retrieve_body( $r ), true ); 2206 2207 if ( false !== $json && ! isset( $json['capabilities'] ) ) { 2208 $result['status'] = 'recommended'; 2209 2210 $result['label'] = __( 'The REST API did not behave correctly' ); 2211 2212 $result['description'] .= sprintf( 2213 '<p>%s</p>', 2214 sprintf( 2215 /* translators: %s: The name of the query parameter being tested. */ 2216 __( 'The REST API did not process the %s query parameter correctly.' ), 2217 '<code>context</code>' 2218 ) 2219 ); 2220 } 2221 } 2222 2223 return $result; 2224 } 2225 2226 /** 2227 * Tests if 'file_uploads' directive in PHP.ini is turned off. 2228 * 2229 * @since 5.5.0 2230 * 2231 * @return array The test results. 2232 */ 2233 public function get_test_file_uploads() { 2234 $result = array( 2235 'label' => __( 'Files can be uploaded' ), 2236 'status' => 'good', 2237 'badge' => array( 2238 'label' => __( 'Performance' ), 2239 'color' => 'blue', 2240 ), 2241 'description' => sprintf( 2242 '<p>%s</p>', 2243 sprintf( 2244 /* translators: 1: file_uploads, 2: php.ini */ 2245 __( 'The %1$s directive in %2$s determines if uploading files is allowed on your site.' ), 2246 '<code>file_uploads</code>', 2247 '<code>php.ini</code>' 2248 ) 2249 ), 2250 'actions' => '', 2251 'test' => 'file_uploads', 2252 ); 2253 2254 if ( ! function_exists( 'ini_get' ) ) { 2255 $result['status'] = 'critical'; 2256 $result['description'] .= sprintf( 2257 /* translators: %s: ini_get() */ 2258 __( 'The %s function has been disabled, some media settings are unavailable because of this.' ), 2259 '<code>ini_get()</code>' 2260 ); 2261 return $result; 2262 } 2263 2264 if ( empty( ini_get( 'file_uploads' ) ) ) { 2265 $result['status'] = 'critical'; 2266 $result['description'] .= sprintf( 2267 '<p>%s</p>', 2268 sprintf( 2269 /* translators: 1: file_uploads, 2: 0 */ 2270 __( '%1$s is set to %2$s. You won\'t be able to upload files on your site.' ), 2271 '<code>file_uploads</code>', 2272 '<code>0</code>' 2273 ) 2274 ); 2275 return $result; 2276 } 2277 2278 $post_max_size = ini_get( 'post_max_size' ); 2279 $upload_max_filesize = ini_get( 'upload_max_filesize' ); 2280 2281 if ( wp_convert_hr_to_bytes( $post_max_size ) < wp_convert_hr_to_bytes( $upload_max_filesize ) ) { 2282 $result['label'] = sprintf( 2283 /* translators: 1: post_max_size, 2: upload_max_filesize */ 2284 __( 'The "%1$s" value is smaller than "%2$s"' ), 2285 'post_max_size', 2286 'upload_max_filesize' 2287 ); 2288 $result['status'] = 'recommended'; 2289 2290 if ( 0 === wp_convert_hr_to_bytes( $post_max_size ) ) { 2291 $result['description'] = sprintf( 2292 '<p>%s</p>', 2293 sprintf( 2294 /* translators: 1: post_max_size, 2: upload_max_filesize */ 2295 __( 'The setting for %1$s is currently configured as 0, this could cause some problems when trying to upload files through plugin or theme features that rely on various upload methods. It is recommended to configure this setting to a fixed value, ideally matching the value of %2$s, as some upload methods read the value 0 as either unlimited, or disabled.' ), 2296 '<code>post_max_size</code>', 2297 '<code>upload_max_filesize</code>' 2298 ) 2299 ); 2300 } else { 2301 $result['description'] = sprintf( 2302 '<p>%s</p>', 2303 sprintf( 2304 /* translators: 1: post_max_size, 2: upload_max_filesize */ 2305 __( 'The setting for %1$s is smaller than %2$s, this could cause some problems when trying to upload files.' ), 2306 '<code>post_max_size</code>', 2307 '<code>upload_max_filesize</code>' 2308 ) 2309 ); 2310 } 2311 2312 return $result; 2313 } 2314 2315 return $result; 2316 } 2317 2318 /** 2319 * Tests if the Authorization header has the expected values. 2320 * 2321 * @since 5.6.0 2322 * 2323 * @return array 2324 */ 2325 public function get_test_authorization_header() { 2326 $result = array( 2327 'label' => __( 'The Authorization header is working as expected' ), 2328 'status' => 'good', 2329 'badge' => array( 2330 'label' => __( 'Security' ), 2331 'color' => 'blue', 2332 ), 2333 'description' => sprintf( 2334 '<p>%s</p>', 2335 __( 'The Authorization header is used by third-party applications you have approved for this site. Without this header, those apps cannot connect to your site.' ) 2336 ), 2337 'actions' => '', 2338 'test' => 'authorization_header', 2339 ); 2340 2341 if ( ! isset( $_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW'] ) ) { 2342 $result['label'] = __( 'The authorization header is missing' ); 2343 } elseif ( 'user' !== $_SERVER['PHP_AUTH_USER'] || 'pwd' !== $_SERVER['PHP_AUTH_PW'] ) { 2344 $result['label'] = __( 'The authorization header is invalid' ); 2345 } else { 2346 return $result; 2347 } 2348 2349 $result['status'] = 'recommended'; 2350 $result['description'] .= sprintf( 2351 '<p>%s</p>', 2352 __( 'If you are still seeing this warning after having tried the actions below, you may need to contact your hosting provider for further assistance.' ) 2353 ); 2354 2355 if ( ! function_exists( 'got_mod_rewrite' ) ) { 2356 require_once ABSPATH . 'wp-admin/includes/misc.php'; 2357 } 2358 2359 if ( got_mod_rewrite() ) { 2360 $result['actions'] .= sprintf( 2361 '<p><a href="%s">%s</a></p>', 2362 esc_url( admin_url( 'options-permalink.php' ) ), 2363 __( 'Flush permalinks' ) 2364 ); 2365 } else { 2366 $result['actions'] .= sprintf( 2367 '<p><a href="%s" target="_blank" rel="noopener">%s<span class="screen-reader-text"> %s</span><span aria-hidden="true" class="dashicons dashicons-external"></span></a></p>', 2368 __( 'https://developer.wordpress.org/rest-api/frequently-asked-questions/#why-is-authentication-not-working' ), 2369 __( 'Learn how to configure the Authorization header.' ), 2370 /* translators: Hidden accessibility text. */ 2371 __( '(opens in a new tab)' ) 2372 ); 2373 } 2374 2375 return $result; 2376 } 2377 2378 /** 2379 * Tests if a full page cache is available. 2380 * 2381 * @since 6.1.0 2382 * 2383 * @return array The test result. 2384 */ 2385 public function get_test_page_cache() { 2386 $description = '<p>' . __( 'Page cache enhances the speed and performance of your site by saving and serving static pages instead of calling for a page every time a user visits.' ) . '</p>'; 2387 $description .= '<p>' . __( 'Page cache is detected by looking for an active page cache plugin as well as making three requests to the homepage and looking for one or more of the following HTTP client caching response headers:' ) . '</p>'; 2388 $description .= '<code>' . implode( '</code>, <code>', array_keys( $this->get_page_cache_headers() ) ) . '.</code>'; 2389 2390 $result = array( 2391 'badge' => array( 2392 'label' => __( 'Performance' ), 2393 'color' => 'blue', 2394 ), 2395 'description' => wp_kses_post( $description ), 2396 'test' => 'page_cache', 2397 'status' => 'good', 2398 'label' => '', 2399 'actions' => sprintf( 2400 '<p><a href="%1$s" target="_blank" rel="noopener noreferrer">%2$s<span class="screen-reader-text"> %3$s</span><span aria-hidden="true" class="dashicons dashicons-external"></span></a></p>', 2401 __( 'https://developer.wordpress.org/advanced-administration/performance/optimization/#caching' ), 2402 __( 'Learn more about page cache' ), 2403 /* translators: Hidden accessibility text. */ 2404 __( '(opens in a new tab)' ) 2405 ), 2406 ); 2407 2408 $page_cache_detail = $this->get_page_cache_detail(); 2409 2410 if ( is_wp_error( $page_cache_detail ) ) { 2411 $result['label'] = __( 'Unable to detect the presence of page cache' ); 2412 $result['status'] = 'recommended'; 2413 $error_info = sprintf( 2414 /* translators: 1: Error message, 2: Error code. */ 2415 __( 'Unable to detect page cache due to possible loopback request problem. Please verify that the loopback request test is passing. Error: %1$s (Code: %2$s)' ), 2416 $page_cache_detail->get_error_message(), 2417 $page_cache_detail->get_error_code() 2418 ); 2419 $result['description'] = wp_kses_post( "<p>$error_info</p>" ) . $result['description']; 2420 return $result; 2421 } 2422 2423 $result['status'] = $page_cache_detail['status']; 2424 2425 switch ( $page_cache_detail['status'] ) { 2426 case 'recommended': 2427 $result['label'] = __( 'Page cache is not detected but the server response time is OK' ); 2428 break; 2429 case 'good': 2430 $result['label'] = __( 'Page cache is detected and the server response time is good' ); 2431 break; 2432 default: 2433 if ( empty( $page_cache_detail['headers'] ) && ! $page_cache_detail['advanced_cache_present'] ) { 2434 $result['label'] = __( 'Page cache is not detected and the server response time is slow' ); 2435 } else { 2436 $result['label'] = __( 'Page cache is detected but the server response time is still slow' ); 2437 } 2438 } 2439 2440 $page_cache_test_summary = array(); 2441 2442 if ( empty( $page_cache_detail['response_time'] ) ) { 2443 $page_cache_test_summary[] = '<span class="dashicons dashicons-dismiss"></span> ' . __( 'Server response time could not be determined. Verify that loopback requests are working.' ); 2444 } else { 2445 2446 $threshold = $this->get_good_response_time_threshold(); 2447 if ( $page_cache_detail['response_time'] < $threshold ) { 2448 $page_cache_test_summary[] = '<span class="dashicons dashicons-yes-alt"></span> ' . sprintf( 2449 /* translators: 1: The response time in milliseconds, 2: The recommended threshold in milliseconds. */ 2450 __( 'Median server response time was %1$s milliseconds. This is less than the recommended %2$s milliseconds threshold.' ), 2451 number_format_i18n( $page_cache_detail['response_time'] ), 2452 number_format_i18n( $threshold ) 2453 ); 2454 } else { 2455 $page_cache_test_summary[] = '<span class="dashicons dashicons-warning"></span> ' . sprintf( 2456 /* translators: 1: The response time in milliseconds, 2: The recommended threshold in milliseconds. */ 2457 __( 'Median server response time was %1$s milliseconds. It should be less than the recommended %2$s milliseconds threshold.' ), 2458 number_format_i18n( $page_cache_detail['response_time'] ), 2459 number_format_i18n( $threshold ) 2460 ); 2461 } 2462 2463 if ( empty( $page_cache_detail['headers'] ) ) { 2464 $page_cache_test_summary[] = '<span class="dashicons dashicons-warning"></span> ' . __( 'No client caching response headers were detected.' ); 2465 } else { 2466 $headers_summary = '<span class="dashicons dashicons-yes-alt"></span>'; 2467 $headers_summary .= ' ' . sprintf( 2468 /* translators: %d: Number of caching headers. */ 2469 _n( 2470 'There was %d client caching response header detected:', 2471 'There were %d client caching response headers detected:', 2472 count( $page_cache_detail['headers'] ) 2473 ), 2474 count( $page_cache_detail['headers'] ) 2475 ); 2476 $headers_summary .= ' <code>' . implode( '</code>, <code>', $page_cache_detail['headers'] ) . '</code>.'; 2477 $page_cache_test_summary[] = $headers_summary; 2478 } 2479 } 2480 2481 if ( $page_cache_detail['advanced_cache_present'] ) { 2482 $page_cache_test_summary[] = '<span class="dashicons dashicons-yes-alt"></span> ' . __( 'A page cache plugin was detected.' ); 2483 } elseif ( ! ( is_array( $page_cache_detail ) && ! empty( $page_cache_detail['headers'] ) ) ) { 2484 // Note: This message is not shown if client caching response headers were present since an external caching layer may be employed. 2485 $page_cache_test_summary[] = '<span class="dashicons dashicons-warning"></span> ' . __( 'A page cache plugin was not detected.' ); 2486 } 2487 2488 $result['description'] .= '<ul><li>' . implode( '</li><li>', $page_cache_test_summary ) . '</li></ul>'; 2489 return $result; 2490 } 2491 2492 /** 2493 * Tests if the site uses persistent object cache and recommends to use it if not. 2494 * 2495 * @since 6.1.0 2496 * 2497 * @return array The test result. 2498 */ 2499 public function get_test_persistent_object_cache() { 2500 /** 2501 * Filters the action URL for the persistent object cache health check. 2502 * 2503 * @since 6.1.0 2504 * 2505 * @param string $action_url Learn more link for persistent object cache health check. 2506 */ 2507 $action_url = apply_filters( 2508 'site_status_persistent_object_cache_url', 2509 /* translators: Localized Support reference. */ 2510 __( 'https://developer.wordpress.org/advanced-administration/performance/optimization/#persistent-object-cache' ) 2511 ); 2512 2513 $result = array( 2514 'test' => 'persistent_object_cache', 2515 'status' => 'good', 2516 'badge' => array( 2517 'label' => __( 'Performance' ), 2518 'color' => 'blue', 2519 ), 2520 'label' => __( 'A persistent object cache is being used' ), 2521 'description' => sprintf( 2522 '<p>%s</p>', 2523 __( 'A persistent object cache makes your site’s database more efficient, resulting in faster load times because WordPress can retrieve your site’s content and settings much more quickly.' ) 2524 ), 2525 'actions' => sprintf( 2526 '<p><a href="%s" target="_blank" rel="noopener">%s<span class="screen-reader-text"> %s</span><span aria-hidden="true" class="dashicons dashicons-external"></span></a></p>', 2527 esc_url( $action_url ), 2528 __( 'Learn more about persistent object caching.' ), 2529 /* translators: Hidden accessibility text. */ 2530 __( '(opens in a new tab)' ) 2531 ), 2532 ); 2533 2534 if ( wp_using_ext_object_cache() ) { 2535 return $result; 2536 } 2537 2538 if ( ! $this->should_suggest_persistent_object_cache() ) { 2539 $result['label'] = __( 'A persistent object cache is not required' ); 2540 2541 return $result; 2542 } 2543 2544 $available_services = $this->available_object_cache_services(); 2545 2546 $notes = __( 'Your hosting provider can tell you if a persistent object cache can be enabled on your site.' ); 2547 2548 if ( ! empty( $available_services ) ) { 2549 $notes .= ' ' . sprintf( 2550 /* translators: Available object caching services. */ 2551 __( 'Your host appears to support the following object caching services: %s.' ), 2552 implode( ', ', $available_services ) 2553 ); 2554 } 2555 2556 /** 2557 * Filters the second paragraph of the health check's description 2558 * when suggesting the use of a persistent object cache. 2559 * 2560 * Hosts may want to replace the notes to recommend their preferred object caching solution. 2561 * 2562 * Plugin authors may want to append notes (not replace) on why object caching is recommended for their plugin. 2563 * 2564 * @since 6.1.0 2565 * 2566 * @param string $notes The notes appended to the health check description. 2567 * @param string[] $available_services The list of available persistent object cache services. 2568 */ 2569 $notes = apply_filters( 'site_status_persistent_object_cache_notes', $notes, $available_services ); 2570 2571 $result['status'] = 'recommended'; 2572 $result['label'] = __( 'You should use a persistent object cache' ); 2573 $result['description'] .= sprintf( 2574 '<p>%s</p>', 2575 wp_kses( 2576 $notes, 2577 array( 2578 'a' => array( 'href' => true ), 2579 'code' => true, 2580 'em' => true, 2581 'strong' => true, 2582 ) 2583 ) 2584 ); 2585 2586 return $result; 2587 } 2588 2589 /** 2590 * Returns a set of tests that belong to the site status page. 2591 * 2592 * Each site status test is defined here, they may be `direct` tests, that run on page load, or `async` tests 2593 * which will run later down the line via JavaScript calls to improve page performance and hopefully also user 2594 * experiences. 2595 * 2596 * @since 5.2.0 2597 * @since 5.6.0 Added support for `has_rest` and `permissions`. 2598 * 2599 * @return array The list of tests to run. 2600 */ 2601 public static function get_tests() { 2602 $tests = array( 2603 'direct' => array( 2604 'wordpress_version' => array( 2605 'label' => __( 'WordPress Version' ), 2606 'test' => 'wordpress_version', 2607 ), 2608 'plugin_version' => array( 2609 'label' => __( 'Plugin Versions' ), 2610 'test' => 'plugin_version', 2611 ), 2612 'theme_version' => array( 2613 'label' => __( 'Theme Versions' ), 2614 'test' => 'theme_version', 2615 ), 2616 'php_version' => array( 2617 'label' => __( 'PHP Version' ), 2618 'test' => 'php_version', 2619 ), 2620 'php_extensions' => array( 2621 'label' => __( 'PHP Extensions' ), 2622 'test' => 'php_extensions', 2623 ), 2624 'php_default_timezone' => array( 2625 'label' => __( 'PHP Default Timezone' ), 2626 'test' => 'php_default_timezone', 2627 ), 2628 'php_sessions' => array( 2629 'label' => __( 'PHP Sessions' ), 2630 'test' => 'php_sessions', 2631 ), 2632 'sql_server' => array( 2633 'label' => __( 'Database Server version' ), 2634 'test' => 'sql_server', 2635 ), 2636 'ssl_support' => array( 2637 'label' => __( 'Secure communication' ), 2638 'test' => 'ssl_support', 2639 ), 2640 'scheduled_events' => array( 2641 'label' => __( 'Scheduled events' ), 2642 'test' => 'scheduled_events', 2643 ), 2644 'http_requests' => array( 2645 'label' => __( 'HTTP Requests' ), 2646 'test' => 'http_requests', 2647 ), 2648 'rest_availability' => array( 2649 'label' => __( 'REST API availability' ), 2650 'test' => 'rest_availability', 2651 'skip_cron' => true, 2652 ), 2653 'debug_enabled' => array( 2654 'label' => __( 'Debugging enabled' ), 2655 'test' => 'is_in_debug_mode', 2656 ), 2657 'file_uploads' => array( 2658 'label' => __( 'File uploads' ), 2659 'test' => 'file_uploads', 2660 ), 2661 'plugin_theme_auto_updates' => array( 2662 'label' => __( 'Plugin and theme auto-updates' ), 2663 'test' => 'plugin_theme_auto_updates', 2664 ), 2665 'update_temp_backup_writable' => array( 2666 'label' => __( 'Plugin and theme temporary backup directory access' ), 2667 'test' => 'update_temp_backup_writable', 2668 ), 2669 'available_updates_disk_space' => array( 2670 'label' => __( 'Available disk space' ), 2671 'test' => 'available_updates_disk_space', 2672 ), 2673 ), 2674 'async' => array( 2675 'dotorg_communication' => array( 2676 'label' => __( 'Communication with WordPress.org' ), 2677 'test' => rest_url( 'wp-site-health/v1/tests/dotorg-communication' ), 2678 'has_rest' => true, 2679 'async_direct_test' => array( WP_Site_Health::get_instance(), 'get_test_dotorg_communication' ), 2680 ), 2681 'background_updates' => array( 2682 'label' => __( 'Background updates' ), 2683 'test' => rest_url( 'wp-site-health/v1/tests/background-updates' ), 2684 'has_rest' => true, 2685 'async_direct_test' => array( WP_Site_Health::get_instance(), 'get_test_background_updates' ), 2686 ), 2687 'loopback_requests' => array( 2688 'label' => __( 'Loopback request' ), 2689 'test' => rest_url( 'wp-site-health/v1/tests/loopback-requests' ), 2690 'has_rest' => true, 2691 'async_direct_test' => array( WP_Site_Health::get_instance(), 'get_test_loopback_requests' ), 2692 ), 2693 'https_status' => array( 2694 'label' => __( 'HTTPS status' ), 2695 'test' => rest_url( 'wp-site-health/v1/tests/https-status' ), 2696 'has_rest' => true, 2697 'async_direct_test' => array( WP_Site_Health::get_instance(), 'get_test_https_status' ), 2698 ), 2699 ), 2700 ); 2701 2702 // Conditionally include Authorization header test if the site isn't protected by Basic Auth. 2703 if ( ! wp_is_site_protected_by_basic_auth() ) { 2704 $tests['async']['authorization_header'] = array( 2705 'label' => __( 'Authorization header' ), 2706 'test' => rest_url( 'wp-site-health/v1/tests/authorization-header' ), 2707 'has_rest' => true, 2708 'headers' => array( 'Authorization' => 'Basic ' . base64_encode( 'user:pwd' ) ), 2709 'skip_cron' => true, 2710 ); 2711 } 2712 2713 // Only check for caches in production environments. 2714 if ( 'production' === wp_get_environment_type() ) { 2715 $tests['async']['page_cache'] = array( 2716 'label' => __( 'Page cache' ), 2717 'test' => rest_url( 'wp-site-health/v1/tests/page-cache' ), 2718 'has_rest' => true, 2719 'async_direct_test' => array( WP_Site_Health::get_instance(), 'get_test_page_cache' ), 2720 ); 2721 2722 $tests['direct']['persistent_object_cache'] = array( 2723 'label' => __( 'Persistent object cache' ), 2724 'test' => 'persistent_object_cache', 2725 ); 2726 } 2727 2728 /** 2729 * Filters which site status tests are run on a site. 2730 * 2731 * The site health is determined by a set of tests based on best practices from 2732 * both the WordPress Hosting Team and web standards in general. 2733 * 2734 * Some sites may not have the same requirements, for example the automatic update 2735 * checks may be handled by a host, and are therefore disabled in core. 2736 * Or maybe you want to introduce a new test, is caching enabled/disabled/stale for example. 2737 * 2738 * Tests may be added either as direct, or asynchronous ones. Any test that may require some time 2739 * to complete should run asynchronously, to avoid extended loading periods within wp-admin. 2740 * 2741 * @since 5.2.0 2742 * @since 5.6.0 Added the `async_direct_test` array key for asynchronous tests. 2743 * Added the `skip_cron` array key for all tests. 2744 * 2745 * @param array[] $tests { 2746 * An associative array of direct and asynchronous tests. 2747 * 2748 * @type array[] $direct { 2749 * An array of direct tests. 2750 * 2751 * @type array ...$identifier { 2752 * `$identifier` should be a unique identifier for the test. Plugins and themes are encouraged to 2753 * prefix test identifiers with their slug to avoid collisions between tests. 2754 * 2755 * @type string $label The friendly label to identify the test. 2756 * @type callable $test The callback function that runs the test and returns its result. 2757 * @type bool $skip_cron Whether to skip this test when running as cron. 2758 * } 2759 * } 2760 * @type array[] $async { 2761 * An array of asynchronous tests. 2762 * 2763 * @type array ...$identifier { 2764 * `$identifier` should be a unique identifier for the test. Plugins and themes are encouraged to 2765 * prefix test identifiers with their slug to avoid collisions between tests. 2766 * 2767 * @type string $label The friendly label to identify the test. 2768 * @type string $test An admin-ajax.php action to be called to perform the test, or 2769 * if `$has_rest` is true, a URL to a REST API endpoint to perform 2770 * the test. 2771 * @type bool $has_rest Whether the `$test` property points to a REST API endpoint. 2772 * @type bool $skip_cron Whether to skip this test when running as cron. 2773 * @type callable $async_direct_test A manner of directly calling the test marked as asynchronous, 2774 * as the scheduled event can not authenticate, and endpoints 2775 * may require authentication. 2776 * } 2777 * } 2778 * } 2779 */ 2780 $tests = apply_filters( 'site_status_tests', $tests ); 2781 2782 // Ensure that the filtered tests contain the required array keys. 2783 $tests = array_merge( 2784 array( 2785 'direct' => array(), 2786 'async' => array(), 2787 ), 2788 $tests 2789 ); 2790 2791 return $tests; 2792 } 2793 2794 /** 2795 * Adds a class to the body HTML tag. 2796 * 2797 * Filters the body class string for admin pages and adds our own class for easier styling. 2798 * 2799 * @since 5.2.0 2800 * 2801 * @param string $body_class The body class string. 2802 * @return string The modified body class string. 2803 */ 2804 public function admin_body_class( $body_class ) { 2805 $screen = get_current_screen(); 2806 if ( 'site-health' !== $screen->id ) { 2807 return $body_class; 2808 } 2809 2810 $body_class .= ' site-health'; 2811 2812 return $body_class; 2813 } 2814 2815 /** 2816 * Initiates the WP_Cron schedule test cases. 2817 * 2818 * @since 5.2.0 2819 */ 2820 private function wp_schedule_test_init() { 2821 $this->schedules = wp_get_schedules(); 2822 $this->get_cron_tasks(); 2823 } 2824 2825 /** 2826 * Populates the list of cron events and store them to a class-wide variable. 2827 * 2828 * @since 5.2.0 2829 */ 2830 private function get_cron_tasks() { 2831 $cron_tasks = _get_cron_array(); 2832 2833 if ( empty( $cron_tasks ) ) { 2834 $this->crons = new WP_Error( 'no_tasks', __( 'No scheduled events exist on this site.' ) ); 2835 return; 2836 } 2837 2838 $this->crons = array(); 2839 2840 foreach ( $cron_tasks as $time => $cron ) { 2841 foreach ( $cron as $hook => $dings ) { 2842 foreach ( $dings as $sig => $data ) { 2843 2844 $this->crons[ "$hook-$sig-$time" ] = (object) array( 2845 'hook' => $hook, 2846 'time' => $time, 2847 'sig' => $sig, 2848 'args' => $data['args'], 2849 'schedule' => $data['schedule'], 2850 'interval' => isset( $data['interval'] ) ? $data['interval'] : null, 2851 ); 2852 2853 } 2854 } 2855 } 2856 } 2857 2858 /** 2859 * Checks if any scheduled tasks have been missed. 2860 * 2861 * Returns a boolean value of `true` if a scheduled task has been missed and ends processing. 2862 * 2863 * If the list of crons is an instance of WP_Error, returns the instance instead of a boolean value. 2864 * 2865 * @since 5.2.0 2866 * 2867 * @return bool|WP_Error True if a cron was missed, false if not. WP_Error if the cron is set to that. 2868 */ 2869 public function has_missed_cron() { 2870 if ( is_wp_error( $this->crons ) ) { 2871 return $this->crons; 2872 } 2873 2874 foreach ( $this->crons as $id => $cron ) { 2875 if ( ( $cron->time - time() ) < $this->timeout_missed_cron ) { 2876 $this->last_missed_cron = $cron->hook; 2877 return true; 2878 } 2879 } 2880 2881 return false; 2882 } 2883 2884 /** 2885 * Checks if any scheduled tasks are late. 2886 * 2887 * Returns a boolean value of `true` if a scheduled task is late and ends processing. 2888 * 2889 * If the list of crons is an instance of WP_Error, returns the instance instead of a boolean value. 2890 * 2891 * @since 5.3.0 2892 * 2893 * @return bool|WP_Error True if a cron is late, false if not. WP_Error if the cron is set to that. 2894 */ 2895 public function has_late_cron() { 2896 if ( is_wp_error( $this->crons ) ) { 2897 return $this->crons; 2898 } 2899 2900 foreach ( $this->crons as $id => $cron ) { 2901 $cron_offset = $cron->time - time(); 2902 if ( 2903 $cron_offset >= $this->timeout_missed_cron && 2904 $cron_offset < $this->timeout_late_cron 2905 ) { 2906 $this->last_late_cron = $cron->hook; 2907 return true; 2908 } 2909 } 2910 2911 return false; 2912 } 2913 2914 /** 2915 * Checks for potential issues with plugin and theme auto-updates. 2916 * 2917 * Though there is no way to 100% determine if plugin and theme auto-updates are configured 2918 * correctly, a few educated guesses could be made to flag any conditions that would 2919 * potentially cause unexpected behaviors. 2920 * 2921 * @since 5.5.0 2922 * 2923 * @return object The test results. 2924 */ 2925 public function detect_plugin_theme_auto_update_issues() { 2926 $mock_plugin = (object) array( 2927 'id' => 'w.org/plugins/a-fake-plugin', 2928 'slug' => 'a-fake-plugin', 2929 'plugin' => 'a-fake-plugin/a-fake-plugin.php', 2930 'new_version' => '9.9', 2931 'url' => 'https://wordpress.org/plugins/a-fake-plugin/', 2932 'package' => 'https://downloads.wordpress.org/plugin/a-fake-plugin.9.9.zip', 2933 'icons' => array( 2934 '2x' => 'https://ps.w.org/a-fake-plugin/assets/icon-256x256.png', 2935 '1x' => 'https://ps.w.org/a-fake-plugin/assets/icon-128x128.png', 2936 ), 2937 'banners' => array( 2938 '2x' => 'https://ps.w.org/a-fake-plugin/assets/banner-1544x500.png', 2939 '1x' => 'https://ps.w.org/a-fake-plugin/assets/banner-772x250.png', 2940 ), 2941 'banners_rtl' => array(), 2942 'tested' => '5.5.0', 2943 'requires_php' => '5.6.20', 2944 'compatibility' => new stdClass(), 2945 ); 2946 2947 $mock_theme = (object) array( 2948 'theme' => 'a-fake-theme', 2949 'new_version' => '9.9', 2950 'url' => 'https://wordpress.org/themes/a-fake-theme/', 2951 'package' => 'https://downloads.wordpress.org/theme/a-fake-theme.9.9.zip', 2952 'requires' => '5.0.0', 2953 'requires_php' => '5.6.20', 2954 ); 2955 2956 $test_plugins_enabled = wp_is_auto_update_forced_for_item( 'plugin', true, $mock_plugin ); 2957 $test_themes_enabled = wp_is_auto_update_forced_for_item( 'theme', true, $mock_theme ); 2958 2959 $ui_enabled_for_plugins = wp_is_auto_update_enabled_for_type( 'plugin' ); 2960 $ui_enabled_for_themes = wp_is_auto_update_enabled_for_type( 'theme' ); 2961 $plugin_filter_present = has_filter( 'auto_update_plugin' ); 2962 $theme_filter_present = has_filter( 'auto_update_theme' ); 2963 2964 if ( ( ! $test_plugins_enabled && $ui_enabled_for_plugins ) 2965 || ( ! $test_themes_enabled && $ui_enabled_for_themes ) 2966 ) { 2967 return (object) array( 2968 'status' => 'critical', 2969 'message' => __( 'Auto-updates for plugins and/or themes appear to be disabled, but settings are still set to be displayed. This could cause auto-updates to not work as expected.' ), 2970 ); 2971 } 2972 2973 if ( ( ! $test_plugins_enabled && $plugin_filter_present ) 2974 && ( ! $test_themes_enabled && $theme_filter_present ) 2975 ) { 2976 return (object) array( 2977 'status' => 'recommended', 2978 'message' => __( 'Auto-updates for plugins and themes appear to be disabled. This will prevent your site from receiving new versions automatically when available.' ), 2979 ); 2980 } elseif ( ! $test_plugins_enabled && $plugin_filter_present ) { 2981 return (object) array( 2982 'status' => 'recommended', 2983 'message' => __( 'Auto-updates for plugins appear to be disabled. This will prevent your site from receiving new versions automatically when available.' ), 2984 ); 2985 } elseif ( ! $test_themes_enabled && $theme_filter_present ) { 2986 return (object) array( 2987 'status' => 'recommended', 2988 'message' => __( 'Auto-updates for themes appear to be disabled. This will prevent your site from receiving new versions automatically when available.' ), 2989 ); 2990 } 2991 2992 return (object) array( 2993 'status' => 'good', 2994 'message' => __( 'There appear to be no issues with plugin and theme auto-updates.' ), 2995 ); 2996 } 2997 2998 /** 2999 * Runs a loopback test on the site. 3000 * 3001 * Loopbacks are what WordPress uses to communicate with itself to start up WP_Cron, scheduled posts, 3002 * make sure plugin or theme edits don't cause site failures and similar. 3003 * 3004 * @since 5.2.0 3005 * 3006 * @return object The test results. 3007 */ 3008 public function can_perform_loopback() { 3009 $body = array( 'site-health' => 'loopback-test' ); 3010 $cookies = wp_unslash( $_COOKIE ); 3011 $timeout = 10; // 10 seconds. 3012 $headers = array( 3013 'Cache-Control' => 'no-cache', 3014 ); 3015 /** This filter is documented in wp-includes/class-wp-http-streams.php */ 3016 $sslverify = apply_filters( 'https_local_ssl_verify', false ); 3017 3018 // Include Basic auth in loopback requests. 3019 if ( isset( $_SERVER['PHP_AUTH_USER'] ) && isset( $_SERVER['PHP_AUTH_PW'] ) ) { 3020 $headers['Authorization'] = 'Basic ' . base64_encode( wp_unslash( $_SERVER['PHP_AUTH_USER'] ) . ':' . wp_unslash( $_SERVER['PHP_AUTH_PW'] ) ); 3021 } 3022 3023 $url = site_url( 'wp-cron.php' ); 3024 3025 /* 3026 * A post request is used for the wp-cron.php loopback test to cause the file 3027 * to finish early without triggering cron jobs. This has two benefits: 3028 * - cron jobs are not triggered a second time on the site health page, 3029 * - the loopback request finishes sooner providing a quicker result. 3030 * 3031 * Using a POST request causes the loopback to differ slightly to the standard 3032 * GET request WordPress uses for wp-cron.php loopback requests but is close 3033 * enough. See https://core.trac.wordpress.org/ticket/52547 3034 */ 3035 $r = wp_remote_post( $url, compact( 'body', 'cookies', 'headers', 'timeout', 'sslverify' ) ); 3036 3037 if ( is_wp_error( $r ) ) { 3038 return (object) array( 3039 'status' => 'critical', 3040 'message' => sprintf( 3041 '%s<br>%s', 3042 __( 'The loopback request to your site failed, this means features relying on them are not currently working as expected.' ), 3043 sprintf( 3044 /* translators: 1: The WordPress error message. 2: The WordPress error code. */ 3045 __( 'Error: %1$s (%2$s)' ), 3046 $r->get_error_message(), 3047 $r->get_error_code() 3048 ) 3049 ), 3050 ); 3051 } 3052 3053 if ( 200 !== wp_remote_retrieve_response_code( $r ) ) { 3054 return (object) array( 3055 'status' => 'recommended', 3056 'message' => sprintf( 3057 /* translators: %d: The HTTP response code returned. */ 3058 __( 'The loopback request returned an unexpected http status code, %d, it was not possible to determine if this will prevent features from working as expected.' ), 3059 wp_remote_retrieve_response_code( $r ) 3060 ), 3061 ); 3062 } 3063 3064 return (object) array( 3065 'status' => 'good', 3066 'message' => __( 'The loopback request to your site completed successfully.' ), 3067 ); 3068 } 3069 3070 /** 3071 * Creates a weekly cron event, if one does not already exist. 3072 * 3073 * @since 5.4.0 3074 */ 3075 public function maybe_create_scheduled_event() { 3076 if ( ! wp_next_scheduled( 'wp_site_health_scheduled_check' ) && ! wp_installing() ) { 3077 wp_schedule_event( time() + DAY_IN_SECONDS, 'weekly', 'wp_site_health_scheduled_check' ); 3078 } 3079 } 3080 3081 /** 3082 * Runs the scheduled event to check and update the latest site health status for the website. 3083 * 3084 * @since 5.4.0 3085 */ 3086 public function wp_cron_scheduled_check() { 3087 // Bootstrap wp-admin, as WP_Cron doesn't do this for us. 3088 require_once trailingslashit( ABSPATH ) . 'wp-admin/includes/admin.php'; 3089 3090 $tests = WP_Site_Health::get_tests(); 3091 3092 $results = array(); 3093 3094 $site_status = array( 3095 'good' => 0, 3096 'recommended' => 0, 3097 'critical' => 0, 3098 ); 3099 3100 // Don't run https test on development environments. 3101 if ( $this->is_development_environment() ) { 3102 unset( $tests['async']['https_status'] ); 3103 } 3104 3105 foreach ( $tests['direct'] as $test ) { 3106 if ( ! empty( $test['skip_cron'] ) ) { 3107 continue; 3108 } 3109 3110 if ( is_string( $test['test'] ) ) { 3111 $test_function = sprintf( 3112 'get_test_%s', 3113 $test['test'] 3114 ); 3115 3116 if ( method_exists( $this, $test_function ) && is_callable( array( $this, $test_function ) ) ) { 3117 $results[] = $this->perform_test( array( $this, $test_function ) ); 3118 continue; 3119 } 3120 } 3121 3122 if ( is_callable( $test['test'] ) ) { 3123 $results[] = $this->perform_test( $test['test'] ); 3124 } 3125 } 3126 3127 foreach ( $tests['async'] as $test ) { 3128 if ( ! empty( $test['skip_cron'] ) ) { 3129 continue; 3130 } 3131 3132 // Local endpoints may require authentication, so asynchronous tests can pass a direct test runner as well. 3133 if ( ! empty( $test['async_direct_test'] ) && is_callable( $test['async_direct_test'] ) ) { 3134 // This test is callable, do so and continue to the next asynchronous check. 3135 $results[] = $this->perform_test( $test['async_direct_test'] ); 3136 continue; 3137 } 3138 3139 if ( is_string( $test['test'] ) ) { 3140 // Check if this test has a REST API endpoint. 3141 if ( isset( $test['has_rest'] ) && $test['has_rest'] ) { 3142 $result_fetch = wp_remote_get( 3143 $test['test'], 3144 array( 3145 'body' => array( 3146 '_wpnonce' => wp_create_nonce( 'wp_rest' ), 3147 ), 3148 ) 3149 ); 3150 } else { 3151 $result_fetch = wp_remote_post( 3152 admin_url( 'admin-ajax.php' ), 3153 array( 3154 'body' => array( 3155 'action' => $test['test'], 3156 '_wpnonce' => wp_create_nonce( 'health-check-site-status' ), 3157 ), 3158 ) 3159 ); 3160 } 3161 3162 if ( ! is_wp_error( $result_fetch ) && 200 === wp_remote_retrieve_response_code( $result_fetch ) ) { 3163 $result = json_decode( wp_remote_retrieve_body( $result_fetch ), true ); 3164 } else { 3165 $result = false; 3166 } 3167 3168 if ( is_array( $result ) ) { 3169 $results[] = $result; 3170 } else { 3171 $results[] = array( 3172 'status' => 'recommended', 3173 'label' => __( 'A test is unavailable' ), 3174 ); 3175 } 3176 } 3177 } 3178 3179 foreach ( $results as $result ) { 3180 if ( 'critical' === $result['status'] ) { 3181 ++$site_status['critical']; 3182 } elseif ( 'recommended' === $result['status'] ) { 3183 ++$site_status['recommended']; 3184 } else { 3185 ++$site_status['good']; 3186 } 3187 } 3188 3189 set_transient( 'health-check-site-status-result', wp_json_encode( $site_status ) ); 3190 } 3191 3192 /** 3193 * Checks if the current environment type is set to 'development' or 'local'. 3194 * 3195 * @since 5.6.0 3196 * 3197 * @return bool True if it is a development environment, false if not. 3198 */ 3199 public function is_development_environment() { 3200 return in_array( wp_get_environment_type(), array( 'development', 'local' ), true ); 3201 } 3202 3203 /** 3204 * Returns a list of headers and its verification callback to verify if page cache is enabled or not. 3205 * 3206 * Note: key is header name and value could be callable function to verify header value. 3207 * Empty value mean existence of header detect page cache is enabled. 3208 * 3209 * @since 6.1.0 3210 * 3211 * @return array List of client caching headers and their (optional) verification callbacks. 3212 */ 3213 public function get_page_cache_headers() { 3214 3215 $cache_hit_callback = static function ( $header_value ) { 3216 return str_contains( strtolower( $header_value ), 'hit' ); 3217 }; 3218 3219 $cache_headers = array( 3220 'cache-control' => static function ( $header_value ) { 3221 return (bool) preg_match( '/max-age=[1-9]/', $header_value ); 3222 }, 3223 'expires' => static function ( $header_value ) { 3224 return strtotime( $header_value ) > time(); 3225 }, 3226 'age' => static function ( $header_value ) { 3227 return is_numeric( $header_value ) && $header_value > 0; 3228 }, 3229 'last-modified' => '', 3230 'etag' => '', 3231 'x-cache-enabled' => static function ( $header_value ) { 3232 return 'true' === strtolower( $header_value ); 3233 }, 3234 'x-cache-disabled' => static function ( $header_value ) { 3235 return ( 'on' !== strtolower( $header_value ) ); 3236 }, 3237 'x-srcache-store-status' => $cache_hit_callback, 3238 'x-srcache-fetch-status' => $cache_hit_callback, 3239 ); 3240 3241 /** 3242 * Filters the list of cache headers supported by core. 3243 * 3244 * @since 6.1.0 3245 * 3246 * @param array $cache_headers Array of supported cache headers. 3247 */ 3248 return apply_filters( 'site_status_page_cache_supported_cache_headers', $cache_headers ); 3249 } 3250 3251 /** 3252 * Checks if site has page cache enabled or not. 3253 * 3254 * @since 6.1.0 3255 * 3256 * @return WP_Error|array { 3257 * Page cache detection details or else error information. 3258 * 3259 * @type bool $advanced_cache_present Whether a page cache plugin is present. 3260 * @type array[] $page_caching_response_headers Sets of client caching headers for the responses. 3261 * @type float[] $response_timing Response timings. 3262 * } 3263 */ 3264 private function check_for_page_caching() { 3265 3266 /** This filter is documented in wp-includes/class-wp-http-streams.php */ 3267 $sslverify = apply_filters( 'https_local_ssl_verify', false ); 3268 3269 $headers = array(); 3270 3271 /* 3272 * Include basic auth in loopback requests. Note that this will only pass along basic auth when user is 3273 * initiating the test. If a site requires basic auth, the test will fail when it runs in WP Cron as part of 3274 * wp_site_health_scheduled_check. This logic is copied from WP_Site_Health::can_perform_loopback(). 3275 */ 3276 if ( isset( $_SERVER['PHP_AUTH_USER'] ) && isset( $_SERVER['PHP_AUTH_PW'] ) ) { 3277 $headers['Authorization'] = 'Basic ' . base64_encode( wp_unslash( $_SERVER['PHP_AUTH_USER'] ) . ':' . wp_unslash( $_SERVER['PHP_AUTH_PW'] ) ); 3278 } 3279 3280 $caching_headers = $this->get_page_cache_headers(); 3281 $page_caching_response_headers = array(); 3282 $response_timing = array(); 3283 3284 for ( $i = 1; $i <= 3; $i++ ) { 3285 $start_time = microtime( true ); 3286 $http_response = wp_remote_get( home_url( '/' ), compact( 'sslverify', 'headers' ) ); 3287 $end_time = microtime( true ); 3288 3289 if ( is_wp_error( $http_response ) ) { 3290 return $http_response; 3291 } 3292 if ( wp_remote_retrieve_response_code( $http_response ) !== 200 ) { 3293 return new WP_Error( 3294 'http_' . wp_remote_retrieve_response_code( $http_response ), 3295 wp_remote_retrieve_response_message( $http_response ) 3296 ); 3297 } 3298 3299 $response_headers = array(); 3300 3301 foreach ( $caching_headers as $header => $callback ) { 3302 $header_values = wp_remote_retrieve_header( $http_response, $header ); 3303 if ( empty( $header_values ) ) { 3304 continue; 3305 } 3306 $header_values = (array) $header_values; 3307 if ( empty( $callback ) || ( is_callable( $callback ) && count( array_filter( $header_values, $callback ) ) > 0 ) ) { 3308 $response_headers[ $header ] = $header_values; 3309 } 3310 } 3311 3312 $page_caching_response_headers[] = $response_headers; 3313 $response_timing[] = ( $end_time - $start_time ) * 1000; 3314 } 3315 3316 return array( 3317 'advanced_cache_present' => ( 3318 file_exists( WP_CONTENT_DIR . '/advanced-cache.php' ) 3319 && 3320 ( defined( 'WP_CACHE' ) && WP_CACHE ) 3321 && 3322 /** This filter is documented in wp-settings.php */ 3323 apply_filters( 'enable_loading_advanced_cache_dropin', true ) 3324 ), 3325 'page_caching_response_headers' => $page_caching_response_headers, 3326 'response_timing' => $response_timing, 3327 ); 3328 } 3329 3330 /** 3331 * Gets page cache details. 3332 * 3333 * @since 6.1.0 3334 * 3335 * @return WP_Error|array { 3336 * Page cache detail or else a WP_Error if unable to determine. 3337 * 3338 * @type string $status Page cache status. Good, Recommended or Critical. 3339 * @type bool $advanced_cache_present Whether page cache plugin is available or not. 3340 * @type string[] $headers Client caching response headers detected. 3341 * @type float $response_time Response time of site. 3342 * } 3343 */ 3344 private function get_page_cache_detail() { 3345 $page_cache_detail = $this->check_for_page_caching(); 3346 if ( is_wp_error( $page_cache_detail ) ) { 3347 return $page_cache_detail; 3348 } 3349 3350 // Use the median server response time. 3351 $response_timings = $page_cache_detail['response_timing']; 3352 rsort( $response_timings ); 3353 $page_speed = $response_timings[ floor( count( $response_timings ) / 2 ) ]; 3354 3355 // Obtain unique set of all client caching response headers. 3356 $headers = array(); 3357 foreach ( $page_cache_detail['page_caching_response_headers'] as $page_caching_response_headers ) { 3358 $headers = array_merge( $headers, array_keys( $page_caching_response_headers ) ); 3359 } 3360 $headers = array_unique( $headers ); 3361 3362 // Page cache is detected if there are response headers or a page cache plugin is present. 3363 $has_page_caching = ( count( $headers ) > 0 || $page_cache_detail['advanced_cache_present'] ); 3364 3365 if ( $page_speed && $page_speed < $this->get_good_response_time_threshold() ) { 3366 $result = $has_page_caching ? 'good' : 'recommended'; 3367 } else { 3368 $result = 'critical'; 3369 } 3370 3371 return array( 3372 'status' => $result, 3373 'advanced_cache_present' => $page_cache_detail['advanced_cache_present'], 3374 'headers' => $headers, 3375 'response_time' => $page_speed, 3376 ); 3377 } 3378 3379 /** 3380 * Gets the threshold below which a response time is considered good. 3381 * 3382 * @since 6.1.0 3383 * 3384 * @return int Threshold in milliseconds. 3385 */ 3386 private function get_good_response_time_threshold() { 3387 /** 3388 * Filters the threshold below which a response time is considered good. 3389 * 3390 * The default is based on https://web.dev/time-to-first-byte/. 3391 * 3392 * @param int $threshold Threshold in milliseconds. Default 600. 3393 * 3394 * @since 6.1.0 3395 */ 3396 return (int) apply_filters( 'site_status_good_response_time_threshold', 600 ); 3397 } 3398 3399 /** 3400 * Determines whether to suggest using a persistent object cache. 3401 * 3402 * @since 6.1.0 3403 * 3404 * @global wpdb $wpdb WordPress database abstraction object. 3405 * 3406 * @return bool Whether to suggest using a persistent object cache. 3407 */ 3408 public function should_suggest_persistent_object_cache() { 3409 global $wpdb; 3410 3411 /** 3412 * Filters whether to suggest use of a persistent object cache and bypass default threshold checks. 3413 * 3414 * Using this filter allows to override the default logic, effectively short-circuiting the method. 3415 * 3416 * @since 6.1.0 3417 * 3418 * @param bool|null $suggest Boolean to short-circuit, for whether to suggest using a persistent object cache. 3419 * Default null. 3420 */ 3421 $short_circuit = apply_filters( 'site_status_should_suggest_persistent_object_cache', null ); 3422 if ( is_bool( $short_circuit ) ) { 3423 return $short_circuit; 3424 } 3425 3426 if ( is_multisite() ) { 3427 return true; 3428 } 3429 3430 /** 3431 * Filters the thresholds used to determine whether to suggest the use of a persistent object cache. 3432 * 3433 * @since 6.1.0 3434 * 3435 * @param int[] $thresholds The list of threshold numbers keyed by threshold name. 3436 */ 3437 $thresholds = apply_filters( 3438 'site_status_persistent_object_cache_thresholds', 3439 array( 3440 'alloptions_count' => 500, 3441 'alloptions_bytes' => 100000, 3442 'comments_count' => 1000, 3443 'options_count' => 1000, 3444 'posts_count' => 1000, 3445 'terms_count' => 1000, 3446 'users_count' => 1000, 3447 ) 3448 ); 3449 3450 $alloptions = wp_load_alloptions(); 3451 3452 if ( $thresholds['alloptions_count'] < count( $alloptions ) ) { 3453 return true; 3454 } 3455 3456 if ( $thresholds['alloptions_bytes'] < strlen( serialize( $alloptions ) ) ) { 3457 return true; 3458 } 3459 3460 $table_names = implode( "','", array( $wpdb->comments, $wpdb->options, $wpdb->posts, $wpdb->terms, $wpdb->users ) ); 3461 3462 // With InnoDB the `TABLE_ROWS` are estimates, which are accurate enough and faster to retrieve than individual `COUNT()` queries. 3463 $results = $wpdb->get_results( 3464 $wpdb->prepare( 3465 // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- This query cannot use interpolation. 3466 "SELECT TABLE_NAME AS 'table', TABLE_ROWS AS 'rows', SUM(data_length + index_length) as 'bytes' FROM information_schema.TABLES WHERE TABLE_SCHEMA = %s AND TABLE_NAME IN ('$table_names') GROUP BY TABLE_NAME;", 3467 DB_NAME 3468 ), 3469 OBJECT_K 3470 ); 3471 3472 $threshold_map = array( 3473 'comments_count' => $wpdb->comments, 3474 'options_count' => $wpdb->options, 3475 'posts_count' => $wpdb->posts, 3476 'terms_count' => $wpdb->terms, 3477 'users_count' => $wpdb->users, 3478 ); 3479 3480 foreach ( $threshold_map as $threshold => $table ) { 3481 if ( $thresholds[ $threshold ] <= $results[ $table ]->rows ) { 3482 return true; 3483 } 3484 } 3485 3486 return false; 3487 } 3488 3489 /** 3490 * Returns a list of available persistent object cache services. 3491 * 3492 * @since 6.1.0 3493 * 3494 * @return string[] The list of available persistent object cache services. 3495 */ 3496 private function available_object_cache_services() { 3497 $extensions = array_map( 3498 'extension_loaded', 3499 array( 3500 'APCu' => 'apcu', 3501 'Redis' => 'redis', 3502 'Relay' => 'relay', 3503 'Memcache' => 'memcache', 3504 'Memcached' => 'memcached', 3505 ) 3506 ); 3507 3508 $services = array_keys( array_filter( $extensions ) ); 3509 3510 /** 3511 * Filters the persistent object cache services available to the user. 3512 * 3513 * This can be useful to hide or add services not included in the defaults. 3514 * 3515 * @since 6.1.0 3516 * 3517 * @param string[] $services The list of available persistent object cache services. 3518 */ 3519 return apply_filters( 'site_status_available_object_cache_services', $services ); 3520 } 3521 }
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