PluginProbe
Search Atlas SEO – OTTO AI SEO Automation for WordPress / trunk
Search Atlas SEO – OTTO AI SEO Automation for WordPress vtrunk
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← All changes | includes/class-metasync.php +653 -12 2.6.10trunk View file →
@@ -71,10 +71,19 @@
71 71
72 72
73 73
74 74 public const option_name = "metasync_options";
75 -
75 +
76 76 /**
77 + * Dedicated option key for heartbeat throttle timestamps.
78 + *
79 + * Stored separately from the main options blob so writes to last_heart_beat
80 + * and last_heartbeat_at do not race with concurrent settings writes during
81 + * the 15-second wp_remote_post window in SyncCustomerParams.
82 + */
83 + public const heartbeat_throttle_option = "metasync_heartbeat_throttle";
84 +
85 + /**
77 86 * Search Atlas Domain Constants
78 87 * Centralized constants for all Search Atlas service endpoints
79 88 */
80 89 public const HOMEPAGE_DOMAIN = "https://searchatlas.com";
@@ -84,8 +93,27 @@
84 93 public const SUPPORT_EMAIL = "support@searchatlas.com";
85 94 public const DOCUMENTATION_DOMAIN = "https://help.searchatlas.com";
86 95
87 96 /**
97 + * Storage prefix marking a Search Atlas API key value as encrypted at rest.
98 + */
99 + private const API_KEY_ENC_PREFIX = 'enc_v1:';
100 +
101 + /**
102 + * Request-scoped memo for the decrypted Search Atlas API key.
103 + *
104 + * null = not yet loaded this request
105 + * false = load attempted but decryption failed (salts changed / corrupt)
106 + * string = decrypted plaintext (may be '')
107 + *
108 + * Never written to a transient or the DB — exists only for the lifetime
109 + * of the current request.
110 + *
111 + * @var string|false|null
112 + */
113 + private static $memo_api_key = null;
114 +
115 + /**
88 116 * Define the core functionality of the plugin.
89 117 *
90 118 * Set the plugin name and the plugin version that can be used throughout the plugin.
91 119 * Load the dependencies, define the locale, and set the hooks for the admin area and
@@ -136,9 +164,34 @@
136 164 } else {
137 165 error_log('MetaSync Google Index: google-index-init.php not found at ' . plugin_dir_path(dirname(__FILE__)) . 'google-index/google-index-init.php');
138 166 }
139 167
168 + // The SEO precedence resolver is referenced statically from the render
169 + // filters, the sync layer and four admin screens. Require it explicitly
170 + // for the same reason as the admin navigation below: a partial update can
171 + // leave newer PHP files beside an older committed autoload classmap, and
172 + // a missing class on wp_head or the posts list is a fatal, not a
173 + // degradation.
174 + if (!class_exists('Metasync_Seo_Precedence')) {
175 + require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-metasync-seo-precedence.php';
176 + }
177 +
178 + // Admin navigation is referenced statically from frontend-reachable
179 + // includes (heartbeat/connect managers). Require it explicitly here so
180 + // the static call never fatals when wp_head fires before autoload.
181 + if (!class_exists('Metasync_Admin_Navigation')) {
182 + require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-metasync-admin-navigation.php';
183 + }
184 +
185 + // Hooked on init at priority 0, before any theme or plugin callback
186 + // runs, so it cannot wait for a lazy autoload. See define_public_hooks.
187 + if (!class_exists('Metasync_BookingPress_Compat')) {
188 + require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-metasync-bookingpress-compat.php';
189 + }
190 +
140 191 $this->loader = new Metasync_Loader();
192 + // Install aggregate-option password protection in every runtime context.
193 + Metasync_Settings_Registration::instance();
141 194 $this->db_heartbeat_errors = new Metasync_HeartBeat_Error_Monitor_Database();
142 195 $this->db_redirection = new Metasync_Redirection_Database();
143 196 }
144 197
@@ -240,8 +293,16 @@
240 293 $post_meta_setting = new Metasync_Post_Meta_Settings();
241 294 $this->loader->add_action('admin_init', $post_meta_setting, 'add_post_meta_data', 2);
242 295 $this->loader->add_action('admin_init', $post_meta_setting, 'show_top_admin_bar', 9);
243 296
297 + // Unified "SEO Suite" meta box — consolidates the separate Classic-editor
298 + // meta boxes above into one tabbed box (presentation-only; save handlers
299 + // unchanged). Classic editor only; the block editor keeps its SEO sidebar.
300 + // Self-registers its hooks in the constructor. Opt out via the
301 + // `metasync_enable_seo_suite` filter.
302 + require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-metasync-seo-suite.php';
303 + new Metasync_Seo_Suite();
304 +
244 305 // SEO Health CSV export: must run on admin_init (before output).
245 306 // Cheap $_GET check avoids loading the class on every admin page.
246 307 if (
247 308 isset($_GET['page'], $_GET['export'], $_GET['_wpnonce']) &&
@@ -251,8 +312,22 @@
251 312 $this->loader->add_action('admin_init', Metasync_SEO_Health::get_instance(), 'handle_csv_export', 1);
252 313 }
253 314 $this->loader->add_action('wp', $post_meta_setting, 'show_top_admin_bar', 9);
254 315
316 + // SEO meta columns on the posts/pages list tables (WP-624).
317 + // Registered for both the `posts` and `pages` variants of each hook so the
318 + // columns reach every supported post type; the callbacks bail on unsupported
319 + // ones. Hidden by default — users opt in from Screen Options.
320 + $seo_columns = Metasync_SEO_Columns::get_instance();
321 + $this->loader->add_filter('manage_posts_columns', $seo_columns, 'add_columns', 10, 2);
322 + $this->loader->add_filter('manage_pages_columns', $seo_columns, 'add_columns', 10, 1);
323 + $this->loader->add_action('manage_posts_custom_column', $seo_columns, 'render_column', 10, 2);
324 + $this->loader->add_action('manage_pages_custom_column', $seo_columns, 'render_column', 10, 2);
325 + $this->loader->add_filter('default_hidden_columns', $seo_columns, 'default_hidden_columns', 10, 2);
326 + $this->loader->add_filter('hidden_columns', $seo_columns, 'hidden_columns', 10, 3);
327 + $this->loader->add_action('admin_head', $seo_columns, 'print_styles');
328 + $this->loader->add_action('admin_notices', $seo_columns, 'companion_plugin_notice');
329 +
255 330 // Initialize XML Sitemap auto-update hooks if enabled
256 331 // Note: Must not be gated by is_admin() because Gutenberg saves posts
257 332 // via the REST API where is_admin() returns false, and REST_REQUEST
258 333 // is not yet defined at plugin load time
@@ -303,14 +378,8 @@
303 378
304 379 $this->loader->add_action('wp_head', $code_snippets, 'get_header_snippet');
305 380 $this->loader->add_action('wp_footer', $code_snippets, 'get_footer_snippet');
306 381
307 -
308 -
309 - $optimal_settings = new Metasync_Optimal_Settings();
310 - $this->loader->add_filter('wp_robots', $optimal_settings, 'add_robots_meta');
311 - $this->loader->add_action('the_content', $optimal_settings, 'add_attributes_external_links');
312 -
313 382 $plugin_public = new Metasync_Public($this->get_plugin_name(), $this->get_version());
314 383 $rest_api = $plugin_public->get_rest_api();
315 384 $seo_output = $plugin_public->get_seo_output();
316 385 $get_plugin_basename = sprintf('%1$s/%1$s.php', $this->plugin_name);
@@ -338,15 +407,20 @@
338 407 // archives) into Yoast/Rank Math/AIOSEO term storage on every write.
339 408 $this->loader->add_action('updated_term_meta', $this, 'on_term_meta_updated', 10, 4);
340 409 $this->loader->add_action('added_term_meta', $this, 'on_term_meta_updated', 10, 4);
341 410
342 - // Post-level plugin sync (WP-196): propagate MetaSync post meta into
411 + // Post-level plugin sync: propagate MetaSync post meta into
343 412 // Yoast/Rank Math/AIOSEO post storage on every write.
344 413 $this->loader->add_action('updated_post_meta', $this, 'on_post_meta_updated', 10, 4);
345 414 $this->loader->add_action('added_post_meta', $this, 'on_post_meta_updated', 10, 4);
415 + // Deletes matter too: clearing the last checkbox in a meta box removes
416 + // the meta row, which fires neither hook above.
417 + $this->loader->add_action('deleted_post_meta', $this, 'on_post_meta_deleted', 10, 3);
346 418
347 419 // SEO Output hooks (Metasync_Seo_Output)
348 420 $this->loader->add_action('wp_head', $seo_output, 'hook_metasync_metatags', 1, 1);
421 + // LocalBusiness / Organization / Person JSON-LD from the Local Business page.
422 + $this->loader->add_action('wp_head', $seo_output, 'output_local_business_schema', 2, 1);
349 423 $this->loader->add_action('template_redirect', $seo_output, 'inject_archive_seo_controls');
350 424
351 425 // Hreflang / language alternates output (wp_head @ priority 2).
352 426 $plugin_hreflang = new Metasync_Hreflang_Output();
@@ -354,8 +428,16 @@
354 428
355 429 // Edge Cache: detect Cloudways Varnish and persist for settings UI
356 430 $this->loader->add_action('init', 'Metasync_Edge_Cache_Purge', 'detect_cloudways');
357 431
432 + // BookingPress starts a PHP session on every front-end request (init
433 + // at priority 1), which makes hosts skip page caching site-wide. Its
434 + // booking flows manage their own sessions inside their AJAX handlers,
435 + // so unhook the global start. Priority 0 keeps this ahead of theirs.
436 + // Registered with add_action directly (like Metasync_Oxygen_Compat)
437 + // because the loader's $component parameter is typed to objects.
438 + add_action('init', ['Metasync_BookingPress_Compat', 'neutralize_bookingpress_session'], 0);
439 +
358 440 // Sitemap exclusions for disabled archive types
359 441 $this->loader->add_filter('wp_sitemaps_taxonomies', $seo_output, 'filter_sitemap_taxonomies');
360 442 $this->loader->add_filter('wp_sitemaps_users_entry', $seo_output, 'filter_sitemap_users', 10, 2);
361 443 $this->loader->add_filter('wp_sitemaps_add_provider', $seo_output, 'filter_sitemap_providers', 10, 2);
@@ -388,8 +470,20 @@
388 470 $this->loader->add_action('plugin_action_links_' . $get_plugin_basename, $plugin_public, 'metasync_plugin_links');
389 471
390 472 // REST API hooks (Metasync_Rest_Api)
391 473 $this->loader->add_action('rest_api_init', $rest_api, 'metasync_register_rest_routes');
474 + // Coexist with third-party JWT auth plugins: clear their prior auth error
475 + // for metasync/v1 requests when our own API key validates. The Tmeister
476 + // "JWT Authentication for WP-API" plugin surfaces its jwt_auth_invalid_token
477 + // 403 via rest_pre_dispatch (priority 10), so we hook the same filter at a
478 + // later priority (11) to clear it for our namespace only.
479 + $this->loader->add_filter('rest_pre_dispatch', $rest_api, 'allow_metasync_rest_auth', 11, 3);
480 + // Coexist with site-wide "authenticated users only" REST restrictions.
481 + // Those hook rest_authentication_errors, which WP applies before dispatch,
482 + // so rest_pre_dispatch and permission_callback never run. Hook it late
483 + // (99) to clear the error for metasync/v1 requests that present a valid
484 + // plugin API key; every other route keeps the site's restriction.
485 + $this->loader->add_filter('rest_authentication_errors', $rest_api, 'allow_metasync_rest_authentication', 99, 1);
392 486 $this->loader->add_action('init', $plugin_public, 'metasync_plugin_init', 5);
393 487 $this->loader->add_action('wp_ajax_metasync_lglogin', $rest_api, 'linkgraph_login');
394 488
395 489 // Robots meta filter (Metasync_Seo_Output)
@@ -430,8 +524,27 @@
430 524 require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-metasync-html-to-markdown.php';
431 525 require_once plugin_dir_path(dirname(__FILE__)) . 'llms-txt/class-metasync-llms-txt-generator.php';
432 526 $llms_txt_generator = new Metasync_Llms_Txt_Generator();
433 527
528 + // Serve the IndexNow key file virtually at /{key}.txt so it works
529 + // on read-only web roots and nginx hosts that 403 direct static .txt access.
530 + require_once plugin_dir_path(dirname(__FILE__)) . 'bing-index/class-metasync-bing-instant-index.php';
531 + add_action('template_redirect', array('Metasync_Bing_Instant_Index', 'serve_virtual_key_file'), 0);
532 +
533 + // Scheduled IndexNow submissions, deferred from save_post so a slow
534 + // IndexNow round-trip cannot stall the editor or REST write. Registered
535 + // statically because the class is loaded but never instantiated on
536 + // cron loads. The hook name matches the uninstall cron sweep exactly.
537 + add_action('metasync_bing_indexnow_submit_event', array('Metasync_Bing_Instant_Index', 'run_scheduled_submit'), 10, 1);
538 +
539 + // Construct the robots.txt manager on the public load path so its
540 + // `robots_txt` filter is registered before a plain GET /robots.txt is
541 + // served. The filter is attached in the singleton's constructor, and
542 + // previously only admin screens built the instance — so the virtual
543 + // robots.txt rules and sitemap lines never rendered on the frontend.
544 + require_once plugin_dir_path(dirname(__FILE__)) . 'robots-txt/class-metasync-robots-txt.php';
545 + Metasync_Robots_Txt::get_instance();
546 +
434 547 // One-time upgrade: regenerate sitemap to remove any Beaver Builder template entries
435 548 if ( ! get_option( 'metasync_sitemap_bb_exclusion_applied' ) ) {
436 549 $this->loader->add_action('init', $this, 'maybe_regenerate_sitemap_after_upgrade');
437 550 }
@@ -590,16 +703,86 @@
590 703 * @param string $meta_key Meta key being written.
591 704 * @param mixed $meta_value Meta value being written.
592 705 */
593 706 public function on_post_meta_updated($meta_id, $post_id, $meta_key, $meta_value) {
594 - if (!class_exists('Metasync_Plugin_Sync')) {
707 + if (!self::is_metasync_meta_key($meta_key)) {
595 708 return;
596 709 }
597 710
711 + if (!self::sync_layer_handles('on_meta_updated')) {
712 + return;
713 + }
714 +
598 715 Metasync_Plugin_Sync::get_instance()->on_meta_updated($meta_id, $post_id, $meta_key, $meta_value);
599 716 }
600 717
601 718 /**
719 + * Bridge deleted_post_meta to the sync layer.
720 + *
721 + * Clearing the last checkbox in a meta box deletes its meta row rather than
722 + * updating it, so the update hooks above never fire and mirrored values can
723 + * go stale. Only the legacy robots keys are acted on; see
724 + * Metasync_Plugin_Sync::on_meta_deleted().
725 + *
726 + * @param array $meta_ids Meta row IDs (unused).
727 + * @param int $post_id Post ID.
728 + * @param string $meta_key Meta key being deleted.
729 + */
730 + public function on_post_meta_deleted($meta_ids, $post_id, $meta_key) {
731 + if (!self::is_metasync_meta_key($meta_key)) {
732 + return;
733 + }
734 +
735 + if (!self::sync_layer_handles('on_meta_deleted')) {
736 + return;
737 + }
738 +
739 + Metasync_Plugin_Sync::get_instance()->on_meta_deleted($meta_ids, $post_id, $meta_key);
740 + }
741 +
742 + /**
743 + * Is this meta key one the post sync layer could possibly care about?
744 + *
745 + * Cheap string gate, no autoload, no singleton. Every watched post key is
746 + * either `_metasync_*` (sidebar, OTTO and the mirrored robots JSON) or
747 + * `metasync_*` (the legacy meta box keys), so this keeps third-party meta
748 + * writes out of the sync layer entirely — `deleted_post_meta` and
749 + * `updated_post_meta` fire for every key on the site, including on front-end
750 + * requests, and crossing into the sync layer for keys it will only discard
751 + * costs an autoload plus a singleton on the hot path.
752 + *
753 + * Deliberately broader than the sync layer's own key maps: those stay the
754 + * single source of exact truth, so a new MetaSync key needs no change here.
755 + *
756 + * @param string $meta_key Meta key being written or deleted.
757 + * @return bool
758 + */
759 + private static function is_metasync_meta_key($meta_key) {
760 + return strncmp($meta_key, '_metasync_', 10) === 0
761 + || strncmp($meta_key, 'metasync_', 9) === 0;
762 + }
763 +
764 + /**
765 + * Can the post sync layer actually handle this hook right now?
766 + *
767 + * A partially updated install can leave a newer class-metasync.php beside an
768 + * older class-metasync-plugin-sync.php — stale opcache bytecode for one file
769 + * is enough. Calling a method the loaded class does not define is a fatal,
770 + * and because these bridges run on `wp_head` via third-party meta writes it
771 + * takes the front end down rather than degrading. Check before dispatching.
772 + *
773 + * Checked on the class, not an instance, so a mismatch skips the singleton.
774 + *
775 + * @param string $method Sync-layer method about to be called.
776 + * @return bool
777 + */
778 + private static function sync_layer_handles($method) {
779 + return class_exists('Metasync_Plugin_Sync')
780 + && method_exists('Metasync_Plugin_Sync', 'get_instance')
781 + && method_exists('Metasync_Plugin_Sync', $method);
782 + }
783 +
784 + /**
602 785 * Save current theme information to MetaSync options
603 786 * This runs in WordPress admin context, not during REST API requests
604 787 * Safe to use wp_get_theme() here
605 788 */
@@ -666,13 +849,396 @@
666 849 ]
667 850 );
668 851 }
669 852 }
670 -
853 +
671 854 return $result;
672 855 }
673 856
674 857 /**
858 + * Derive the 32-byte AES key from existing WordPress salts.
859 + *
860 + * No new secret is stored anywhere — the key material is the concatenation
861 + * of three WordPress salts, hashed to a fixed 32 bytes. If the salts change
862 + * (e.g. wp-config regenerated) the derived key changes and previously
863 + * encrypted values can no longer be decrypted, which is handled gracefully
864 + * by the callers (re-authenticate state) rather than fataling.
865 + *
866 + * @return string 32 raw bytes.
867 + */
868 + private static function api_key_crypto_key()
869 + {
870 + $material = wp_salt('secure_auth') . wp_salt('logged_in') . wp_salt('nonce');
871 + return hash('sha256', $material, true);
872 + }
873 +
874 + /**
875 + * Determine whether a stored value is in the encrypted-at-rest format.
876 + *
877 + * @param mixed $value
878 + * @return bool
879 + */
880 + public static function is_encrypted_api_key($value)
881 + {
882 + return is_string($value) && strncmp($value, self::API_KEY_ENC_PREFIX, strlen(self::API_KEY_ENC_PREFIX)) === 0;
883 + }
884 +
885 + /**
886 + * Encrypt a plaintext Search Atlas API key for storage at rest.
887 + *
888 + * Uses AES-256-GCM (authenticated) with a random 12-byte IV. The IV, the
889 + * 16-byte GCM tag and the ciphertext are concatenated and base64-encoded
890 + * behind an `enc_v1:` prefix. An empty string is stored as-is (no key set).
891 + *
892 + * When OpenSSL is unavailable or encryption fails the plaintext is stored
893 + * unchanged (availability over hard-fail) and the degradation is logged so
894 + * it cannot go unnoticed.
895 + *
896 + * @param string $plaintext
897 + * @return string Encrypted blob, or '' when $plaintext is empty.
898 + */
899 + public static function encrypt_api_key($plaintext)
900 + {
901 + $plaintext = (string) $plaintext;
902 + if ($plaintext === '') {
903 + return '';
904 + }
905 +
906 + // Already encrypted — do not double-encrypt.
907 + if (self::is_encrypted_api_key($plaintext)) {
908 + return $plaintext;
909 + }
910 +
911 + if (!function_exists('openssl_encrypt')) {
912 + // OpenSSL unavailable — store plaintext rather than lose the key.
913 + error_log('MetaSync: OpenSSL is unavailable — the Search Atlas API key was stored WITHOUT encryption at rest.');
914 + return $plaintext;
915 + }
916 +
917 + $key = self::api_key_crypto_key();
918 + $iv = random_bytes(12);
919 + $tag = '';
920 + $ciphertext = openssl_encrypt($plaintext, 'aes-256-gcm', $key, OPENSSL_RAW_DATA, $iv, $tag, '', 16);
921 +
922 + if ($ciphertext === false) {
923 + // Encryption failed — fall back to plaintext storage, but say so.
924 + error_log('MetaSync: API key encryption failed — the Search Atlas API key was stored WITHOUT encryption at rest.');
925 + return $plaintext;
926 + }
927 +
928 + return self::API_KEY_ENC_PREFIX . base64_encode($iv . $tag . $ciphertext);
929 + }
930 +
931 + /**
932 + * Decrypt a stored Search Atlas API key value.
933 + *
934 + * Accepts either the encrypted `enc_v1:` format or a legacy plaintext value
935 + * (returned unchanged, supporting installs that pre-date encryption). On any
936 + * decryption failure (salt change / corruption) returns false so callers can
937 + * surface a re-authenticate state instead of using a bad key.
938 + *
939 + * @param mixed $value
940 + * @return string|false Plaintext, or false when an encrypted value cannot be decrypted.
941 + */
942 + public static function decrypt_api_key($value)
943 + {
944 + if (!is_string($value) || $value === '') {
945 + return '';
946 + }
947 +
948 + if (!self::is_encrypted_api_key($value)) {
949 + // Legacy plaintext key.
950 + return $value;
951 + }
952 +
953 + if (!function_exists('openssl_decrypt')) {
954 + return false;
955 + }
956 +
957 + $raw = base64_decode(substr($value, strlen(self::API_KEY_ENC_PREFIX)), true);
958 + if ($raw === false || strlen($raw) < 12 + 16 + 1) {
959 + return false;
960 + }
961 +
962 + $iv = substr($raw, 0, 12);
963 + $tag = substr($raw, 12, 16);
964 + $ciphertext = substr($raw, 28);
965 +
966 + $key = self::api_key_crypto_key();
967 + $plaintext = openssl_decrypt($ciphertext, 'aes-256-gcm', $key, OPENSSL_RAW_DATA, $iv, $tag);
968 +
969 + if ($plaintext === false) {
970 + return false;
971 + }
972 +
973 + return $plaintext;
974 + }
975 +
976 + /**
977 + * Get the decrypted Search Atlas API key, memoized for the request.
978 + *
979 + * Decrypts at most once per request and never persists the decrypted value
980 + * anywhere. When a legacy plaintext key is found it is migrated to the
981 + * encrypted format in place (one-time migration on load). Returns:
982 + * - the plaintext key (string, possibly '')
983 + * - false when an encrypted value exists but cannot be decrypted
984 + * (salts changed / corrupt) — callers should treat this as a
985 + * "please re-authenticate" state.
986 + *
987 + * @return string|false
988 + */
989 + public static function get_searchatlas_api_key()
990 + {
991 + if (self::$memo_api_key !== null) {
992 + return self::$memo_api_key;
993 + }
994 +
995 + $general = self::get_option('general');
996 + $stored = is_array($general) ? ($general['searchatlas_api_key'] ?? '') : '';
997 +
998 + // One-time migration: a non-empty legacy plaintext value is encrypted
999 + // in place the first time it is read after this feature ships.
1000 + if ($stored !== '' && is_string($stored) && !self::is_encrypted_api_key($stored)) {
1001 + $encrypted = self::encrypt_api_key($stored);
1002 + if (self::is_encrypted_api_key($encrypted)) {
1003 + $options = self::get_option();
1004 + if (!is_array($options)) {
1005 + $options = [];
1006 + }
1007 + $options['general']['searchatlas_api_key'] = $encrypted;
1008 + self::set_option($options);
1009 + }
1010 + }
1011 +
1012 + self::$memo_api_key = self::decrypt_api_key($stored);
1013 + return self::$memo_api_key;
1014 + }
1015 +
1016 + /**
1017 + * Clear the request-scoped decrypted-key memo.
1018 + *
1019 + * Call after any write that changes the stored searchatlas_api_key so a
1020 + * subsequent read in the same request reflects the new value.
1021 + */
1022 + public static function invalidate_api_key_cache()
1023 + {
1024 + self::$memo_api_key = null;
1025 + }
1026 +
1027 + /**
1028 + * Read the heartbeat throttle state from its dedicated option.
1029 + *
1030 + * Backfills from the legacy location (`metasync_options['general']`) the
1031 + * first time the dedicated option is empty, so existing installs keep
1032 + * their throttle history across the migration.
1033 + */
1034 + public static function get_heartbeat_throttle(): array
1035 + {
1036 + $value = get_option(self::heartbeat_throttle_option, []);
1037 + if (is_array($value) && !empty($value)) {
1038 + return $value;
1039 + }
1040 +
1041 + $general = self::get_option('general');
1042 + if (is_array($general) && (array_key_exists('last_heart_beat', $general) || array_key_exists('last_heartbeat_at', $general))) {
1043 + $throttle = [
1044 + 'last_heart_beat' => $general['last_heart_beat'] ?? 0,
1045 + 'last_heartbeat_at' => $general['last_heartbeat_at'] ?? null,
1046 + ];
1047 + update_option(self::heartbeat_throttle_option, $throttle);
1048 + return $throttle;
1049 + }
1050 +
1051 + return [];
1052 + }
1053 +
1054 + /**
1055 + * Merge fields into the dedicated heartbeat throttle option.
1056 + *
1057 + * Writes via update_option directly so the main metasync_options blob is
1058 + * never read or rewritten — avoiding the read-modify-write race with
1059 + * concurrent settings saves.
1060 + */
1061 + public static function set_heartbeat_throttle(array $fields): void
1062 + {
1063 + $existing = get_option(self::heartbeat_throttle_option, []);
1064 + if (!is_array($existing)) {
1065 + $existing = [];
1066 + }
1067 + $merged = array_merge($existing, $fields);
1068 + update_option(self::heartbeat_throttle_option, $merged);
1069 + }
1070 +
1071 + /**
1072 + * Storage prefix marking a secret value as encrypted at rest.
1073 + */
1074 + private const SECRET_ENC_PREFIX = 'enc_v1:';
1075 +
1076 + /**
1077 + * Derive the 32-byte AES key from existing WordPress salts.
1078 + *
1079 + * No new secret is stored anywhere — the key material is the concatenation
1080 + * of three WordPress salts, hashed to a fixed 32 bytes. If the salts change
1081 + * (e.g. wp-config regenerated) the derived key changes and previously
1082 + * encrypted values can no longer be decrypted, which callers handle
1083 + * gracefully rather than fataling.
1084 + *
1085 + * @return string 32 raw bytes.
1086 + */
1087 + private static function secret_crypto_key()
1088 + {
1089 + $material = wp_salt('secure_auth') . wp_salt('logged_in') . wp_salt('nonce');
1090 + return hash('sha256', $material, true);
1091 + }
1092 +
1093 + /**
1094 + * Determine whether a stored value is in the encrypted-at-rest format.
1095 + *
1096 + * @param mixed $value
1097 + * @return bool
1098 + */
1099 + public static function is_encrypted_secret($value)
1100 + {
1101 + return is_string($value) && strncmp($value, self::SECRET_ENC_PREFIX, strlen(self::SECRET_ENC_PREFIX)) === 0;
1102 + }
1103 +
1104 + /**
1105 + * Encrypt a plaintext secret (e.g. the whitelabel settings password) for
1106 + * storage at rest.
1107 + *
1108 + * Uses AES-256-GCM (authenticated) with a random 12-byte IV. The IV, the
1109 + * 16-byte GCM tag and the ciphertext are concatenated and base64-encoded
1110 + * behind an `enc_v1:` prefix. An empty string is stored as-is (no secret).
1111 + *
1112 + * When OpenSSL is unavailable or encryption fails the plaintext is stored
1113 + * unchanged (availability over hard-fail) and the degradation is logged so
1114 + * it cannot go unnoticed.
1115 + *
1116 + * @param string $plaintext
1117 + * @return string Encrypted blob, or '' when $plaintext is empty.
1118 + */
1119 + public static function encrypt_secret($plaintext)
1120 + {
1121 + $plaintext = (string) $plaintext;
1122 + if ($plaintext === '') {
1123 + return '';
1124 + }
1125 +
1126 + // Already encrypted — do not double-encrypt.
1127 + if (self::is_encrypted_secret($plaintext)) {
1128 + return $plaintext;
1129 + }
1130 +
1131 + if (!function_exists('openssl_encrypt')) {
1132 + // OpenSSL unavailable — store plaintext rather than lose the secret.
1133 + error_log('MetaSync: OpenSSL is unavailable — a secret was stored WITHOUT encryption at rest.');
1134 + return $plaintext;
1135 + }
1136 +
1137 + $key = self::secret_crypto_key();
1138 + $iv = random_bytes(12);
1139 + $tag = '';
1140 + $ciphertext = openssl_encrypt($plaintext, 'aes-256-gcm', $key, OPENSSL_RAW_DATA, $iv, $tag, '', 16);
1141 +
1142 + if ($ciphertext === false) {
1143 + // Encryption failed — fall back to plaintext storage, but say so.
1144 + error_log('MetaSync: Secret encryption failed — a secret was stored WITHOUT encryption at rest.');
1145 + return $plaintext;
1146 + }
1147 +
1148 + return self::SECRET_ENC_PREFIX . base64_encode($iv . $tag . $ciphertext);
1149 + }
1150 +
1151 + /**
1152 + * Decrypt a stored secret value.
1153 + *
1154 + * Accepts either the encrypted `enc_v1:` format or a legacy plaintext value
1155 + * (returned unchanged, supporting installs that pre-date encryption). On any
1156 + * decryption failure (salt change / corruption) returns false so callers can
1157 + * degrade gracefully instead of using a bad value.
1158 + *
1159 + * @param mixed $value
1160 + * @return string|false Plaintext, or false when an encrypted value cannot be decrypted.
1161 + */
1162 + public static function decrypt_secret($value)
1163 + {
1164 + if (!is_string($value) || $value === '') {
1165 + return '';
1166 + }
1167 +
1168 + if (!self::is_encrypted_secret($value)) {
1169 + // Legacy plaintext value.
1170 + return $value;
1171 + }
1172 +
1173 + if (!function_exists('openssl_decrypt')) {
1174 + return false;
1175 + }
1176 +
1177 + $raw = base64_decode(substr($value, strlen(self::SECRET_ENC_PREFIX)), true);
1178 + if ($raw === false || strlen($raw) < 12 + 16 + 1) {
1179 + return false;
1180 + }
1181 +
1182 + $iv = substr($raw, 0, 12);
1183 + $tag = substr($raw, 12, 16);
1184 + $ciphertext = substr($raw, 28);
1185 +
1186 + $key = self::secret_crypto_key();
1187 + $plaintext = openssl_decrypt($ciphertext, 'aes-256-gcm', $key, OPENSSL_RAW_DATA, $iv, $tag);
1188 +
1189 + if ($plaintext === false) {
1190 + return false;
1191 + }
1192 +
1193 + return $plaintext;
1194 + }
1195 +
1196 + /**
1197 + * Get the decrypted whitelabel settings password.
1198 + *
1199 + * Reads the stored (encrypted) value and returns the plaintext for
1200 + * verification or authorized display. A legacy plaintext value found in
1201 + * storage is migrated to the encrypted format in place (one-time migration
1202 + * on read). Returns '' when no password is set or when an encrypted value
1203 + * can no longer be decrypted (salts changed / corrupt) — in that case the
1204 + * stored value still counts as "password set" for protection checks, but
1205 + * the user password cannot authenticate until it is reset.
1206 + *
1207 + * @return string
1208 + */
1209 + public static function get_whitelabel_password()
1210 + {
1211 + $whitelabel = self::get_whitelabel_settings();
1212 + $stored = $whitelabel['settings_password'] ?? '';
1213 +
1214 + if (!is_string($stored) || $stored === '') {
1215 + return '';
1216 + }
1217 +
1218 + // One-time migration: encrypt a legacy plaintext value in place.
1219 + // This is a whole-blob read-modify-write of metasync_options during a
1220 + // read request; a concurrent settings save could theoretically clobber
1221 + // it, but it fires at most once per legacy install so the window is
1222 + // accepted rather than adding a dedicated option.
1223 + if (!self::is_encrypted_secret($stored)) {
1224 + $encrypted = self::encrypt_secret($stored);
1225 + if (self::is_encrypted_secret($encrypted)) {
1226 + $options = self::get_option();
1227 + if (!is_array($options)) {
1228 + $options = [];
1229 + }
1230 + $options['whitelabel']['settings_password'] = $encrypted;
1231 + self::set_option($options);
1232 + }
1233 + return $stored;
1234 + }
1235 +
1236 + $plaintext = self::decrypt_secret($stored);
1237 + return $plaintext === false ? '' : $plaintext;
1238 + }
1239 +
1240 + /**
675 1241 * Get whitelabel settings
676 1242 * Helper method to retrieve whitelabel configuration
677 1243 */
678 1244 public static function get_whitelabel_settings()
@@ -891,10 +1457,69 @@
891 1457
892 1458 // Priority 3: Return base_name as fallback
893 1459 return $base_name;
894 1460 }
895 -
1461 +
896 1462 /**
1463 + * Render a standalone info-icon tooltip (the same visual/JS pattern used by
1464 + * get_field_tooltips() + render_accordion_sections() in Metasync_Settings_Fields).
1465 + * Use this on any admin page whose fields are NOT rendered through that
1466 + * accordion field-loop (custom render_callback pages, standalone view files) —
1467 + * the trigger/hover/positioning JS in admin/js/metasync-admin.js binds to
1468 + * `.metasync-tooltip-trigger` globally, so no extra wiring is needed as long
1469 + * as this markup is present on a page where metasync-admin.js is enqueued
1470 + * (i.e. any admin page under this plugin's menu).
1471 + *
1472 + * @param string $tooltip_id Unique id for this tooltip (unique per page).
1473 + * @param string $text Plain-English help text (escaped internally).
1474 + */
1475 + public static function render_tooltip_icon($tooltip_id, $text)
1476 + {
1477 + echo self::get_tooltip_icon_html($tooltip_id, $text);
1478 + }
1479 +
1480 + /**
1481 + * Same tooltip markup as render_tooltip_icon(), but RETURNS the HTML string
1482 + * instead of echoing it. Use this when the tooltip needs to be concatenated
1483 + * into another string — e.g. appended to the $title argument of
1484 + * add_settings_field(), which WordPress core echoes raw next to the label.
1485 + *
1486 + * The whole trigger+popup pair is wrapped in its own small
1487 + * `position: relative` anchor span. The popup CSS (.metasync-tooltip) is
1488 + * `position: absolute; left: 100%` and positions itself relative to the
1489 + * nearest positioned ancestor — on the main settings accordion that's the
1490 + * `.metasync-field-label-wrapper` div, but standalone pages (custom
1491 + * render_callback templates, add_settings_field titles on plain
1492 + * do_settings_sections() pages, etc.) usually have no such ancestor, so
1493 + * the popup would escape to whatever distant positioned element exists
1494 + * on the page (rendering in the wrong corner of the screen). Wrapping
1495 + * here makes every tooltip self-contained regardless of where it's placed.
1496 + *
1497 + * @param string $tooltip_id Unique id for this tooltip (unique per page).
1498 + * @param string $text Plain-English help text (escaped internally).
1499 + * @return string HTML markup for the info-icon trigger + tooltip content.
1500 + */
1501 + public static function get_tooltip_icon_html($tooltip_id, $text)
1502 + {
1503 + $html = '<span class="metasync-tooltip-anchor" style="position:relative;display:inline-block;vertical-align:middle;margin-left:8px;">';
1504 + $html .= '<button type="button" class="metasync-tooltip-trigger" data-tooltip-id="' . esc_attr($tooltip_id) . '" aria-label="More information">';
1505 + $html .= '<svg class="metasync-info-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">';
1506 + $html .= '<circle cx="12" cy="12" r="10"></circle>';
1507 + $html .= '<path d="M9.09 9a3 3 0 0 1 5.83 1c0 2-3 3-3 3"></path>';
1508 + $html .= '<line x1="12" y1="17" x2="12.01" y2="17"></line>';
1509 + $html .= '</svg>';
1510 + $html .= '</button>';
1511 +
1512 + $html .= '<div class="metasync-tooltip" id="tooltip-' . esc_attr($tooltip_id) . '" role="tooltip">';
1513 + $html .= '<div class="metasync-tooltip-arrow"></div>';
1514 + $html .= '<div class="metasync-tooltip-content">' . esc_html($text) . '</div>';
1515 + $html .= '</div>';
1516 + $html .= '</span>';
1517 +
1518 + return $html;
1519 + }
1520 +
1521 + /**
897 1522 * Centralized API Key Event Logging
898 1523 * Provides structured logging for all API key related events with consistent formatting
899 1524 *
900 1525 * @since 1.0.0
@@ -961,10 +1586,25 @@
961 1586 if (!is_404()) {
962 1587 return;
963 1588 }
964 1589
1590 + // PROTECTION 0: Skip WordPress system paths — these are not "broken links"
1591 + $request_uri = $_SERVER['REQUEST_URI'] ?? '';
1592 + $skip_prefixes = [
1593 + '/wp-json/',
1594 + '/wp-admin/',
1595 + '/feed/',
1596 + '/xmlrpc.php',
1597 + '/wp-login.php',
1598 + '/wp-cron.php',
1599 + ];
1600 + foreach ($skip_prefixes as $prefix) {
1601 + if (stripos($request_uri, $prefix) === 0) {
1602 + return;
1603 + }
1604 + }
1605 +
965 1606 // PROTECTION 1: Exclude static assets to reduce noise
966 - $request_uri = $_SERVER['REQUEST_URI'] ?? '';
967 1607 $static_extensions = ['.css', '.js', '.jpg', '.jpeg', '.png', '.gif', '.ico', '.svg', '.woff', '.woff2', '.ttf', '.eot', '.map','.webp'];
968 1608 foreach ($static_extensions as $ext) {
969 1609 if (stripos($request_uri, $ext) !== false) {
970 1610 return; // Skip logging static asset 404s
@@ -1016,8 +1656,9 @@
1016 1656 return; // Skip potentially malicious or malformed URLs
1017 1657 }
1018 1658
1019 1659 // Initialize 404 monitor database
1660 + require_once plugin_dir_path(dirname(__FILE__)) . '404-monitor/class-metasync-404-monitor-database.php';
1020 1661 $db_404 = new Metasync_Error_Monitor_Database();
1021 1662
1022 1663 // Get user agent (sanitized)
1023 1664 $user_agent = isset($_SERVER['HTTP_USER_AGENT']) ? sanitize_text_field($_SERVER['HTTP_USER_AGENT']) : '';