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Search Atlas SEO – OTTO AI SEO Automation for WordPress / 2.7.2
Search Atlas SEO – OTTO AI SEO Automation for WordPress v2.7.2
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← All changes | includes/class-metasync-activator.php +572 -39 2.6.14 → 2.7.2 View file →
@@ -23,8 +23,55 @@
23 23 class Metasync_Activator
24 24 {
25 25
26 26 /**
27 + * Option recording the last failed White Label JSON import.
28 + * Stores array{file_hash: string, failed_at: int, error: string}.
29 + *
30 + * @var string
31 + */
32 + const IMPORT_FAILURE_OPTION = 'metasync_whitelabel_import_failure';
33 +
34 + /**
35 + * Retry cadence (seconds) for a failing White Label import so a
36 + * broken file cannot produce a silent retry storm on every admin request.
37 + *
38 + * @var int
39 + */
40 + const IMPORT_RETRY_BACKOFF_SECONDS = 3600;
41 +
42 + /**
43 + * The white-label settings whose values are mirrored into the
44 + * metasync.php plugin header.
45 + *
46 + * @var string[]
47 + */
48 + const BRANDING_HEADER_FIELDS = [
49 + 'white_label_plugin_name',
50 + 'white_label_plugin_description',
51 + 'white_label_plugin_author',
52 + 'white_label_plugin_author_uri',
53 + 'white_label_plugin_uri',
54 + ];
55 +
56 + /**
57 + * Machine-readable reason for the most recent import failure, consumed
58 + * by render_whitelabel_import_failure_notice().
59 + *
60 + * @var string
61 + */
62 + private static $last_import_error = '';
63 +
64 + /**
65 + * Field-specific validation errors for the most recent import failure,
66 + * keyed by white-label setting name. Populated only when the import was
67 + * rejected because a branding value fails the plugin-header contract.
68 + *
69 + * @var array<string, string>
70 + */
71 + private static $last_import_invalid_fields = array();
72 +
73 + /**
27 74 * Canonical list of MetaSync custom WP-Cron hooks.
28 75 * Shared with Metasync_Deactivator so deactivation cleans up every scheduled hook.
29 76 *
30 77 * @since 2.5.x
@@ -45,8 +92,10 @@
45 92 'metasync_speed_cache_cleanup',
46 93 'metasync_process_seo_job',
47 94 'metasync_process_otto_crawl_url_job',
48 95 'metasync_process_otto_batch_cache_job',
96 + 'metasync_host_blocking_check',
97 + 'metasync_host_blocking_weekly_check',
49 98 ];
50 99
51 100 /**
52 101 * Short Description. (use period)
@@ -66,9 +115,9 @@
66 115 self::ensure_plugin_auth_token();
67 116
68 117 // Import whitelabel settings only if the JSON file is new or changed
69 118 // (prevents overwriting admin UI changes on every deactivate/activate cycle)
70 - self::check_whitelabel_settings_update();
119 + self::check_whitelabel_settings_update(true);
71 120
72 121 // Pre-SSO announce: tell backend plugin is installed (PR4 - heartbeat reliability)
73 122 update_option('metasync_announce_attempt_count', 0);
74 123 self::send_announce_ping();
@@ -78,8 +127,16 @@
78 127 if (!wp_next_scheduled('metasync_announce_cron')) {
79 128 wp_schedule_event(time() + 10 * MINUTE_IN_SECONDS, 'metasync_every_10_minutes', 'metasync_announce_cron');
80 129 }
81 130
131 + // Detect a host that blocks GET/POST between this site and Search Atlas.
132 + // Deferred to cron (~10 minutes out) rather than run here — a blocking HTTP call
133 + // inside the activation request is exactly what has taken slow hosts down before,
134 + // and a firewall-blocked request is the slowest kind there is.
135 + if (class_exists('Metasync_Host_Blocking_Check')) {
136 + Metasync_Host_Blocking_Check::schedule_initial_check();
137 + }
138 +
82 139 // Set first activation flag for setup wizard
83 140 if (!get_option('metasync_first_activation_time')) {
84 141 update_option('metasync_first_activation_time', current_time('mysql'));
85 142 update_option('metasync_show_wizard', true);
@@ -84,9 +141,9 @@
84 141 update_option('metasync_first_activation_time', current_time('mysql'));
85 142 update_option('metasync_show_wizard', true);
86 143 }
87 144
88 - // Auto-disable WP core sitemap if a MetaSync sitemap already exists (WP-396).
145 + // Auto-disable WP core sitemap if a MetaSync sitemap already exists.
89 146 // Skip on fresh installs where no sitemap has been generated yet so the site
90 147 // doesn't end up with zero sitemaps.
91 148 if (get_option('metasync_sitemap_auto_update', false)
92 149 || !empty(get_option('metasync_sitemap_files', []))
@@ -195,21 +252,40 @@
195 252 /**
196 253 * Check if whitelabel settings file has been updated and import if needed
197 254 * This method should be called on init to detect plugin uploads/updates
198 255 *
256 + * @param bool $trusted_update_context True only for core activation/upgrader hooks.
257 + * @return bool Whether the file was already current or imported successfully.
199 258 * @since 2.5.0
200 259 */
201 - public static function check_whitelabel_settings_update()
260 + public static function check_whitelabel_settings_update($trusted_update_context = false)
202 261 {
262 +// Never run the import from AJAX handlers. admin-ajax requests
263 + // (notably the Forgot Password recovery call) run admin_init first, so an
264 + // import attempted there already holds the shared recovery lock when the
265 + // handler itself runs, and every recovery request returns HTTP 429.
266 + // Trusted activation/upgrader contexts run once per update, not per
267 + // request, and stay exempt.
268 + if (!$trusted_update_context && wp_doing_ajax()) {
269 + return false;
270 + }
271 +
272 + if (!$trusted_update_context && !current_user_can('manage_options')) {
273 + return false;
274 + }
275 +
203 276 $json_file = self::get_whitelabel_settings_file();
204 277
205 278 if ($json_file === false) {
206 - return;
279 + return false;
207 280 }
208 281
209 282 // Get current file modification time and content hash
210 283 $file_mtime = filemtime($json_file);
211 284 $file_hash = md5_file($json_file);
285 + if (!is_int($file_mtime) || !is_string($file_hash)) {
286 + return false;
287 + }
212 288
213 289 // Get stored file info
214 290 $stored_mtime = get_option('metasync_whitelabel_file_mtime', 0);
215 291 $stored_hash = get_option('metasync_whitelabel_file_hash', '');
@@ -215,49 +291,151 @@
215 291 $stored_hash = get_option('metasync_whitelabel_file_hash', '');
216 292
217 293 // Check if file has changed (either modification time or content)
218 294 if ($file_mtime > $stored_mtime || $file_hash !== $stored_hash) {
295 + // A failing import must not retry on every admin request.
296 + // Back off per failing file hash; a successful import or a changed
297 + // file clears the state and retries immediately.
298 + $failure = get_option(self::IMPORT_FAILURE_OPTION, array());
299 + if (is_array($failure)
300 + && isset($failure['file_hash'], $failure['failed_at'])
301 + && (string) $failure['file_hash'] === $file_hash
302 + && (time() - (int) $failure['failed_at']) < self::IMPORT_RETRY_BACKOFF_SECONDS) {
303 + return false;
304 + }
305 +
219 306 // File has changed, import settings
220 - self::import_whitelabel_settings();
307 + if (!self::import_whitelabel_settings()) {
308 + $failure = array(
309 + 'file_hash' => $file_hash,
310 + 'failed_at' => time(),
311 + 'error' => self::$last_import_error,
312 + );
313 + if (self::$last_import_error === 'branding_field_invalid' && !empty(self::$last_import_invalid_fields)) {
314 + $failure['invalid_fields'] = self::$last_import_invalid_fields;
315 + }
316 + update_option(self::IMPORT_FAILURE_OPTION, $failure);
317 + return false;
318 + }
319 + delete_option(self::IMPORT_FAILURE_OPTION);
221 320
222 - // Store new file info
321 + // Record the file only after the complete import succeeds.
223 322 update_option('metasync_whitelabel_file_mtime', $file_mtime);
224 323 update_option('metasync_whitelabel_file_hash', $file_hash);
225 324 }
325 +
326 + return true;
226 327 }
227 328
228 329 /**
330 + * Machine-readable reason of the most recent failed White Label import.
331 + *
332 + * @return string
333 + */
334 + public static function get_last_import_error()
335 + {
336 + return self::$last_import_error;
337 + }
338 +
339 + /**
340 + * Field-specific branding errors of the most recent failed White Label import.
341 + *
342 + * @return array<string, string>
343 + */
344 + public static function get_last_import_invalid_fields()
345 + {
346 + return self::$last_import_invalid_fields;
347 + }
348 +
349 + /**
350 + * Admin notice for a White Label JSON import that keeps failing.
351 + * Registered from metasync_check_whitelabel_on_admin(); the state is set
352 + * by check_whitelabel_settings_update() when an import fails.
353 + *
354 + * @return void
355 + */
356 + public static function render_whitelabel_import_failure_notice()
357 + {
358 + if (!current_user_can('manage_options')) {
359 + return;
360 + }
361 + $failure = get_option(self::IMPORT_FAILURE_OPTION, array());
362 + if (!is_array($failure) || empty($failure['file_hash']) || empty($failure['failed_at'])) {
363 + return;
364 + }
365 + $reasons = array(
366 + 'json_read_failed' => 'the file could not be read',
367 + 'json_invalid' => 'the file is not valid JSON',
368 + 'json_structure_invalid' => 'the file structure is invalid',
369 + 'plugin_file_unreadable' => 'metasync.php could not be read',
370 + 'branding_field_invalid' => 'the white-label branding values are not valid',
371 + 'plugin_header_write_failed' => 'the plugin file headers could not be updated (is metasync.php writable?)',
372 + 'recovery_lock_busy' => 'another password operation was in progress',
373 + 'options_write_failed' => 'the settings could not be saved',
374 + );
375 + $reason = isset($failure['error'], $reasons[$failure['error']]) ? $reasons[$failure['error']] : 'an unexpected error occurred';
376 +
377 + // Field-specific detail for a content rejection: name the exact
378 + // branding field so the package can be fixed rather than retried blind.
379 + echo '<div class="notice notice-error"><p><strong>White Label settings import failed.</strong> '
380 + . 'MetaSync could not import <code>whitelabel-settings.json</code>: ' . esc_html($reason)
381 + . '. The import will be retried automatically; fix the file and reload to retry immediately.</p>';
382 + if (isset($failure['invalid_fields']) && is_array($failure['invalid_fields']) && !empty($failure['invalid_fields'])) {
383 + echo '<ul style="margin: 8px 0 0 0; list-style: disc; padding-left: 20px;">';
384 + foreach ($failure['invalid_fields'] as $message) {
385 + echo '<li>' . esc_html((string) $message) . '</li>';
386 + }
387 + echo '</ul>';
388 + echo '<p style="margin: 8px 0 0 0;">Allowed: single-line text (including valid Unicode) and http(s) URLs. Line breaks, control/invisible characters, comment-ending text, PHP tags, and non-http(s) URLs are rejected.</p>';
389 + }
390 + echo '</div>';
391 + }
392 +
393 + /**
229 394 * Import whitelabel settings from JSON file if available
230 395 * Checks for whitelabel-settings.json in the plugin directory or extracted zip
231 396 *
232 - * This method is public to allow calling during both activation and plugin updates.
397 + * @return bool Whether the complete import succeeded.
233 398 * @since 2.5.0
234 399 */
235 - public static function import_whitelabel_settings()
400 + private static function import_whitelabel_settings()
236 401 {
237 402 $json_file = self::get_whitelabel_settings_file();
238 403
239 404 if ($json_file === false) {
240 - return;
405 + return false;
241 406 }
242 407
408 + self::$last_import_error = 'unknown';
409 + self::$last_import_invalid_fields = array();
410 +
243 411 // Read JSON file
244 412 $json_content = file_get_contents($json_file);
245 413 if ($json_content === false) {
246 - return;
414 + self::$last_import_error = 'json_read_failed';
415 + return false;
247 416 }
248 417
249 418 // Decode JSON
250 419 $import_data = json_decode($json_content, true);
251 420 if ($import_data === null || json_last_error() !== JSON_ERROR_NONE) {
252 - return;
421 + self::$last_import_error = 'json_invalid';
422 + return false;
253 423 }
254 424
255 425 // Validate import data structure
256 426 if (!isset($import_data['whitelabel_settings']) || !is_array($import_data['whitelabel_settings'])) {
257 - return;
427 + self::$last_import_error = 'json_structure_invalid';
428 + return false;
258 429 }
259 430
431 + $plugin_file = plugin_dir_path(dirname(__FILE__)) . 'metasync.php';
432 + $original_plugin_content = file_get_contents($plugin_file);
433 + if ($original_plugin_content === false) {
434 + self::$last_import_error = 'plugin_file_unreadable';
435 + return false;
436 + }
437 +
260 438 // Get current options
261 439 $options = get_option('metasync_options', array());
262 440
263 441 // Import whitelabel settings
@@ -271,8 +449,14 @@
271 449
272 450 // Merge imported settings with existing (imported settings take precedence)
273 451 $options['whitelabel'] = array_merge($options['whitelabel'], $whitelabel_settings);
274 452
453 + // The settings password travels as plaintext in the export file so it
454 + // can be imported on a site with different salts — encrypt it at rest.
455 + if (!empty($options['whitelabel']['settings_password']) && is_string($options['whitelabel']['settings_password'])) {
456 + $options['whitelabel']['settings_password'] = Metasync::encrypt_secret($options['whitelabel']['settings_password']);
457 + }
458 +
275 459 // Update timestamp
276 460 $options['whitelabel']['updated_at'] = time();
277 461 $options['whitelabel']['imported_at'] = current_time('mysql');
278 462 }
@@ -288,8 +472,25 @@
288 472 $options['general'][$key] = $value;
289 473 }
290 474 }
291 475
476 + // Validate and persist the public plugin headers before any other import side effect.
477 + $header_data = array(
478 + 'general_settings' => $options['general'] ?? array(),
479 + );
480 + if (!self::update_plugin_file_headers($header_data, $plugin_file)) {
481 + self::$last_import_error = 'plugin_header_write_failed';
482 + // Distinguish a content rejection (invalid branding values) from an
483 + // environmental failure (unwritable file, mangled header block) so the
484 + // admin notice can point at the offending field.
485 + $invalid_fields = self::validate_plugin_header_settings($options['general'] ?? array());
486 + if (!empty($invalid_fields)) {
487 + self::$last_import_error = 'branding_field_invalid';
488 + self::$last_import_invalid_fields = $invalid_fields;
489 + }
490 + return false;
491 + }
492 +
292 493 // Restore bundled icon: if the icon value is a __bundled_icon__{ext} marker,
293 494 // copy the bundled file from the plugin directory to uploads and update the URL.
294 495 $icon_value = $options['general']['white_label_plugin_menu_icon'] ?? '';
295 496 if (!empty($icon_value) && strpos($icon_value, '__bundled_icon__') === 0) {
@@ -315,19 +516,80 @@
315 516 $options['general']['white_label_plugin_menu_icon'] = '';
316 517 }
317 518 }
318 519
319 - // Save updated options
320 - update_option('metasync_options', $options);
520 + // Save updated options.
521 +// when the package carries a settings password this is a
522 + // legitimate import write, but the recovery protection filter treats any
523 + // unauthenticated password write as a conflict and swaps it back to the
524 + // stored password — the verification below could then never pass once a
525 + // password is stored, and the retry loop would hold the shared recovery
526 + // lock on every admin request, blocking the Forgot Password flow.
527 + // Mirror the recovery flow's own persist path: take the lock and
528 + // authorize the write for the duration of the save.
529 + $carries_password = !empty($options['whitelabel']['settings_password']);
530 + $import_lock_owner = '';
531 + if ($carries_password) {
532 + require_once __DIR__ . '/class-metasync-admin-ajax.php';
533 + require_once __DIR__ . '/class-metasync-settings-registration.php';
534 + if (!self::class_supports_methods('Metasync_Admin_Ajax', array('acquire_recovery_lock', 'release_recovery_lock'))
535 + || !self::class_supports_methods('Metasync_Settings_Registration', array('authorize_recovery_password_write'))) {
536 + // The updater can replace plugin files after the old classes were
537 + // loaded in this request. Defer the import to the next request.
538 + self::$last_import_error = 'recovery_api_unavailable';
539 + return false;
540 + }
541 + if (!Metasync_Admin_Ajax::instance()->acquire_recovery_lock($import_lock_owner)) {
542 + // A recovery or settings save is mid-write; retry via the normal
543 + // backoff instead of fighting for the lock.
544 + self::$last_import_error = 'recovery_lock_busy';
545 + return false;
546 + }
547 + }
548 + try {
549 + if ($carries_password) {
550 + Metasync_Settings_Registration::authorize_recovery_password_write(true);
551 + }
552 + update_option('metasync_options', $options);
553 + } finally {
554 + if ($carries_password) {
555 + Metasync_Settings_Registration::authorize_recovery_password_write(false);
556 + Metasync_Admin_Ajax::instance()->release_recovery_lock($import_lock_owner);
557 + }
558 + }
559 + if (get_option('metasync_options', null) !== $options) {
560 + if (self::atomically_replace_plugin_file($plugin_file, $original_plugin_content)) {
561 + wp_cache_delete('plugins', 'plugins');
562 + }
563 + self::$last_import_error = 'options_write_failed';
564 + return false;
565 + }
321 566
322 - // Update the plugin file headers so whitelabel shows even when deactivated
323 - self::update_plugin_file_headers($import_data);
324 -
325 567 // Optionally delete the JSON file after successful import (uncomment if desired)
326 568 // unlink($json_file);
569 +
570 + return true;
327 571 }
328 572
329 573 /**
574 + * Check runtime class compatibility without letting static analysis fold it.
575 + *
576 + * @param string $class_name Class name loaded in the current request.
577 + * @param string[] $methods Required method names.
578 + * @return bool
579 + */
580 + private static function class_supports_methods($class_name, $methods)
581 + {
582 + foreach ($methods as $method) {
583 + if (!method_exists($class_name, $method)) {
584 + return false;
585 + }
586 + }
587 +
588 + return true;
589 + }
590 +
591 + /**
330 592 * Sync plugin file headers from the current saved options in the database.
331 593 * Call this after saving whitelabel settings via the admin UI to ensure
332 594 * the plugin file headers reflect the latest whitelabel values.
333 595 *
@@ -334,8 +596,12 @@
334 596 * @since 2.5.0
335 597 */
336 598 public static function sync_plugin_file_headers()
337 599 {
600 + if (!current_user_can('manage_options')) {
601 + return false;
602 + }
603 +
338 604 $options = get_option('metasync_options', array());
339 605 $general = $options['general'] ?? array();
340 606
341 607 // Build the import_data format expected by update_plugin_file_headers
@@ -342,12 +608,138 @@
342 608 $import_data = array(
343 609 'general_settings' => $general,
344 610 );
345 611
346 - self::update_plugin_file_headers($import_data);
612 + return self::update_plugin_file_headers($import_data);
347 613 }
348 614
349 615 /**
616 + * Absolute path of the plugin file whose header carries the branding.
617 + *
618 + * @return string
619 + */
620 + public static function plugin_header_file_path()
621 + {
622 + return plugin_dir_path(dirname(__FILE__)) . 'metasync.php';
623 + }
624 +
625 + /**
626 + * Apply a proposed save's branding to the physical plugin header BEFORE
627 + * the options write starts, so an unwritable or malformed target stops
628 + * the save while nothing has been persisted yet.
629 + *
630 + * Returns null when none of the branding values changed (the file is left
631 + * untouched — unrelated saves must not rewrite metasync.php), true when
632 + * the header now matches the proposed values, and false when the update
633 + * was rejected or failed (file unchanged, save must be aborted).
634 + *
635 + * @param mixed $proposed_general General section proposed for saving.
636 + * @param mixed $stored_general General section currently stored.
637 + * @return bool|null
638 + */
639 + public static function apply_plugin_file_headers_for_save($proposed_general, $stored_general)
640 + {
641 + $proposed_general = is_array($proposed_general) ? $proposed_general : array();
642 + $stored_general = is_array($stored_general) ? $stored_general : array();
643 +
644 + $changed = false;
645 + foreach (self::BRANDING_HEADER_FIELDS as $key) {
646 + if ((string) ($proposed_general[$key] ?? '') !== (string) ($stored_general[$key] ?? '')) {
647 + $changed = true;
648 + break;
649 + }
650 + }
651 + if (!$changed) {
652 + return null;
653 + }
654 +
655 + return self::update_plugin_file_headers(array('general_settings' => $proposed_general));
656 + }
657 +
658 + /**
659 + * Restore a previous metasync.php content after a save that wrote new
660 + * headers but then failed to persist the matching options.
661 + *
662 + * @param string $plugin_file Absolute path to metasync.php.
663 + * @param string|false $original_content Content captured before the header write (file_get_contents() result).
664 + * @return bool Whether the restore succeeded.
665 + */
666 + public static function restore_plugin_file_content($plugin_file, $original_content)
667 + {
668 + if (!is_string($original_content) || $original_content === '') {
669 + return false;
670 + }
671 + if (!self::atomically_replace_plugin_file($plugin_file, $original_content)) {
672 + return false;
673 + }
674 + wp_cache_delete('plugins', 'plugins');
675 + return true;
676 + }
677 +
678 + /**
679 + * Validate the five values that are written into metasync.php's plugin header.
680 + *
681 + * This is deliberately shared by administrator saves and package imports so
682 + * both paths enforce the same contract before options are persisted.
683 + *
684 + * @param mixed $general General settings submitted or imported.
685 + * @return array<string, string> Field-specific errors, keyed by setting name.
686 + */
687 + public static function validate_plugin_header_settings($general)
688 + {
689 + $general = is_array($general) ? $general : array();
690 + $header_map = array(
691 + 'white_label_plugin_name' => array(
692 + 'label' => 'Plugin Name',
693 + 'default' => 'Search Atlas SEO - OTTO AI SEO Automation for WordPress',
694 + 'url' => false,
695 + ),
696 + 'white_label_plugin_description' => array(
697 + 'label' => 'Plugin Description',
698 + 'default' => 'Search Atlas SEO is an intuitive WordPress Plugin that transforms the most complicated, most labor-intensive SEO tasks into streamlined, straightforward processes. With a few clicks, the meta-bulk update feature automates the re-optimization of meta tags using AI to increase clicks. Stay up-to-date with the freshest Google Search data for your entire site or targeted URLs within the Meta Sync plug-in page.',
699 + 'url' => false,
700 + ),
701 + 'white_label_plugin_author' => array(
702 + 'label' => 'Author',
703 + 'default' => 'Search Atlas',
704 + 'url' => false,
705 + ),
706 + 'white_label_plugin_author_uri' => array(
707 + 'label' => 'Author URI',
708 + 'default' => 'https://searchatlas.com',
709 + 'url' => true,
710 + ),
711 + 'white_label_plugin_uri' => array(
712 + 'label' => 'Plugin URI',
713 + 'default' => 'https://searchatlas.com/',
714 + 'url' => true,
715 + ),
716 + );
717 + $errors = array();
718 +
719 + foreach ($header_map as $key => $config) {
720 + // A present-but-empty string resets to the default; a scalar like
721 + // "0" is a real value and must not be conflated with unset (the
722 + // classic PHP !empty() trap). Malformed non-strings fall through
723 + // to the is_string rejection below.
724 + $value = $config['default'];
725 + if (array_key_exists($key, $general)) {
726 + $raw = $general[$key];
727 + if (is_string($raw)) {
728 + $value = $raw !== '' ? $raw : $config['default'];
729 + } elseif ($raw !== null) {
730 + $value = $raw;
731 + }
732 + }
733 + if (!is_string($value) || !self::is_valid_plugin_header_value($value, $config['url'])) {
734 + $errors[$key] = sprintf('%s contains invalid characters or format.', $config['label']);
735 + }
736 + }
737 +
738 + return $errors;
739 + }
740 +
741 + /**
350 742 * Update the main plugin file headers with whitelabel values
351 743 * WordPress reads plugin metadata directly from the file header comments,
352 744 * so modifying these ensures whitelabel shows even when the plugin is deactivated.
353 745 *
@@ -353,19 +745,19 @@
353 745 *
354 746 * @param array $import_data The imported whitelabel data
355 747 * @since 2.5.0
356 748 */
357 - private static function update_plugin_file_headers($import_data)
749 + private static function update_plugin_file_headers($import_data, $plugin_file = null)
358 750 {
359 - $plugin_file = plugin_dir_path(dirname(__FILE__)) . 'metasync.php';
751 + $plugin_file = $plugin_file ?: plugin_dir_path(dirname(__FILE__)) . 'metasync.php';
360 752
361 - if (!file_exists($plugin_file) || !is_writable($plugin_file)) {
362 - return;
753 + if (!file_exists($plugin_file) || !wp_is_writable($plugin_file)) {
754 + return false;
363 755 }
364 756
365 757 $content = file_get_contents($plugin_file);
366 758 if ($content === false) {
367 - return;
759 + return false;
368 760 }
369 761
370 762 $general = $import_data['general_settings'] ?? array();
371 763
@@ -373,9 +765,9 @@
373 765 // with default values to restore when whitelabel is cleared
374 766 $header_map = array(
375 767 'white_label_plugin_name' => array(
376 768 'header' => 'Plugin Name',
377 - 'default' => 'Search Atlas: The Premier AI SEO Plugin for Instant Optimization',
769 + 'default' => 'Search Atlas SEO - OTTO AI SEO Automation for WordPress',
378 770 ),
379 771 'white_label_plugin_description' => array(
380 772 'header' => 'Description',
381 773 'default' => 'Search Atlas SEO is an intuitive WordPress Plugin that transforms the most complicated, most labor-intensive SEO tasks into streamlined, straightforward processes. With a few clicks, the meta-bulk update feature automates the re-optimization of meta tags using AI to increase clicks. Stay up-to-date with the freshest Google Search data for your entire site or targeted URLs within the Meta Sync plug-in page.',
@@ -394,36 +786,177 @@
394 786 ),
395 787 );
396 788
397 789 $modified = false;
790 + $original_content = $content;
791 + $url_fields = array('white_label_plugin_author_uri', 'white_label_plugin_uri');
398 792
399 793 foreach ($header_map as $setting_key => $field_config) {
400 794 $header_field = $field_config['header'];
401 795
402 - // Use whitelabel value if set, otherwise restore default
403 - $new_value = !empty($general[$setting_key])
404 - ? $general[$setting_key]
405 - : $field_config['default'];
796 + // Use whitelabel value if set, otherwise restore default. A scalar
797 + // like "0" is a real value, not an unset field; an empty string or
798 + // null restores the default; malformed non-strings are rejected by
799 + // the is_string check below.
800 + $new_value = $field_config['default'];
801 + if (array_key_exists($setting_key, $general)) {
802 + $raw_value = $general[$setting_key];
803 + if (is_string($raw_value)) {
804 + $new_value = $raw_value !== '' ? $raw_value : $field_config['default'];
805 + } elseif ($raw_value !== null) {
806 + $new_value = $raw_value;
807 + }
808 + }
406 809
810 + if (!is_string($new_value) || !self::is_valid_plugin_header_value($new_value, in_array($setting_key, $url_fields, true))) {
811 + return false;
812 + }
813 +
407 814 // Match the header line: " * Field Name: any value"
408 815 // Handles varying whitespace between field name and value
409 816 $pattern = '/^(\s*\*\s*' . preg_quote($header_field, '/') . ':\s*)(.+)$/m';
410 817
411 - if (preg_match($pattern, $content, $matches)) {
412 - // Only replace if the value actually differs from what's in the file
413 - if (trim($matches[2]) !== trim($new_value)) {
414 - // Escape both backslashes and $ signs for preg_replace replacement string
415 - $escaped_value = str_replace(array('\\', '$'), array('\\\\', '\\$'), $new_value);
416 - $content = preg_replace($pattern, '${1}' . $escaped_value, $content, 1);
417 - $modified = true;
818 + if (preg_match_all($pattern, $content, $matches) !== 1) {
819 + return false;
820 + }
821 +
822 + // Only replace if the value actually differs from what's in the file.
823 + if (trim($matches[2][0]) !== trim($new_value)) {
824 + $content = preg_replace_callback(
825 + $pattern,
826 + static function ($match) use ($new_value) {
827 + return $match[1] . $new_value;
828 + },
829 + $content,
830 + 1,
831 + $replacement_count
832 + );
833 +
834 + if (!is_string($content) || $replacement_count !== 1) {
835 + return false;
418 836 }
837 + $modified = true;
419 838 }
420 839 }
421 840
422 - if ($modified) {
423 - file_put_contents($plugin_file, $content);
841 + if (!self::is_valid_transformed_plugin_file($original_content, $content, $header_map)) {
842 + return false;
843 + }
424 844
425 - // Clear WordPress plugin cache so it reads the updated headers
426 - wp_cache_delete('plugins', 'plugins');
845 + if (!$modified) {
846 + return true;
427 847 }
848 +
849 + if (!self::atomically_replace_plugin_file($plugin_file, $content)) {
850 + return false;
851 + }
852 +
853 + // Clear WordPress plugin cache so it reads the updated headers.
854 + wp_cache_delete('plugins', 'plugins');
855 +
856 + return true;
857 + }
858 +
859 + /**
860 + * Validate a value before placing it inside the plugin's PHP docblock.
861 + *
862 + * Public so form/import handlers can pre-validate a value with the exact
863 + * contract used when metasync.php is physically rewritten.
864 + *
865 + * @param string $value Candidate header value.
866 + * @param bool $is_url Whether the value must be an http(s) URL.
867 + * @return bool
868 + */
869 + public static function is_valid_plugin_header_value($value, $is_url)
870 + {
871 + if (
872 + $value === ''
873 + || preg_match('/^[\p{L}\p{M}\p{N}\p{P}\p{S}\p{Zs}]+$/u', $value) !== 1
874 + || preg_match('/\*\/|<\?php|\?>/i', $value) !== 0
875 + ) {
876 + return false;
877 + }
878 +
879 + if (!$is_url) {
880 + return true;
881 + }
882 +
883 + if (filter_var($value, FILTER_VALIDATE_URL) === false) {
884 + return false;
885 + }
886 +
887 + $scheme = strtolower((string) wp_parse_url($value, PHP_URL_SCHEME));
888 +
889 + return in_array($scheme, array('http', 'https'), true);
890 + }
891 +
892 + /**
893 + * Validate the complete transformed PHP file and its header structure.
894 + */
895 + private static function is_valid_transformed_plugin_file($original, $transformed, $header_map)
896 + {
897 + if (!is_string($transformed) || strpos($transformed, '<?php') !== 0) {
898 + return false;
899 + }
900 +
901 + if (
902 + substr_count($original, '<?php') !== substr_count($transformed, '<?php')
903 + || substr_count($original, '?>') !== substr_count($transformed, '?>')
904 + ) {
905 + return false;
906 + }
907 +
908 + foreach ($header_map as $field_config) {
909 + $pattern = '/^\s*\*\s*' . preg_quote($field_config['header'], '/') . ':\s*.+$/m';
910 + if (preg_match_all($pattern, $transformed) !== 1) {
911 + return false;
912 + }
913 + }
914 +
915 + try {
916 + $tokens = token_get_all($transformed, TOKEN_PARSE);
917 + } catch (ParseError $error) {
918 + return false;
919 + }
920 +
921 + return true;
922 + }
923 +
924 + /**
925 + * Replace a plugin file from a same-directory temporary file.
926 + */
927 + private static function atomically_replace_plugin_file($plugin_file, $content, $rename_file = null)
928 + {
929 + $directory = dirname($plugin_file);
930 + $temp_file = tempnam($directory, '.metasync-header-');
931 + if ($temp_file === false) {
932 + return false;
933 + }
934 +
935 + $permissions = fileperms($plugin_file);
936 + $written = file_put_contents($temp_file, $content, LOCK_EX);
937 + if ($written !== strlen($content)) {
938 + @wp_delete_file($temp_file);
939 + return false;
940 + }
941 +
942 + if ($permissions !== false) {
943 + @chmod($temp_file, $permissions & 0777); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_chmod -- direct POSIX permission change; WP_Filesystem would prompt for FTP credentials on non-direct hosts
944 + }
945 +
946 + if ($rename_file === null) {
947 + $rename_file = static function ($source, $destination) {
948 + return @rename($source, $destination); // phpcs:ignore WordPress.WP.AlternativeFunctions.rename_rename -- atomic same-filesystem replace; WP_Filesystem::move() needs credential bootstrapping on non-direct hosts
949 + };
950 + }
951 +
952 + // The temporary file is on the same filesystem, so a successful rename is
953 + // atomic. On failure the original path has not been touched.
954 + if ($rename_file($temp_file, $plugin_file)) {
955 + return true;
956 + }
957 +
958 + @wp_delete_file($temp_file);
959 +
960 + return false;
428 961 }
429 962 }