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<?php |
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// If this file is called directly, abort. |
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if (!defined('ABSPATH')) { |
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exit; |
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} |
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|
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/** |
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* This class handles the Otto Pixel Functions |
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*/ |
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Class Metasync_otto_pixel{ |
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|
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#otto html class |
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public $o_html; |
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|
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# crawl data option |
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public $option_name = 'metasync_otto_crawldata'; |
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|
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# no cache wp pages |
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public $no_cache_pages = ['wp-login.php']; |
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|
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# OTTO UUID |
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private $otto_uuid; |
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|
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# |
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function __construct($otto_uuid){ |
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|
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# store the UUID |
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$this->otto_uuid = $otto_uuid; |
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|
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# load the html class |
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$this->o_html = new Metasync_otto_html($otto_uuid); |
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|
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} |
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|
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# method to handle cache refresh |
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# NOTE: Cache system removed - always process in real-time |
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function refresh_cache($route){ |
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# No-op: Cache system has been removed |
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# All pages are processed in real-time from OTTO API |
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return true; |
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} |
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|
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|
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# method to save crawl data into |
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function save_crawl_data($data){ |
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|
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# get the option name |
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$option_name = $this->option_name; |
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|
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# handle data |
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$saved = get_option($option_name); |
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|
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# log saved |
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|
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# if saved false save |
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if(empty($saved['urls'])){ |
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|
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# save the option |
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update_option($option_name, $data); |
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|
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return; |
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} |
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|
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# get new unique list of urls |
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$new_list = array_unique(array_merge($data['urls'], $saved['urls'])); |
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|
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# set data |
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$data['urls'] = $new_list; |
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|
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# log saved |
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|
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# save the option |
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update_option($option_name, $data); |
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} |
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|
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/** |
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* Check if a URL has been crawled by Otto |
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* - Validates domain against saved domain |
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* - Ignores query strings |
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* - Does exact path matching as Otto stores paths exactly as they appear |
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* @param string $url - Full URL to check |
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* @return bool - True if URL was crawled, false otherwise |
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*/ |
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function is_url_crawled($url) { |
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# Ensure valid input |
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if (empty($url) || !is_string($url)) { |
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return false; |
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} |
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|
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# Get saved crawl data |
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$saved = get_option($this->option_name); |
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|
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if ( |
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empty($saved) || |
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!is_array($saved) || |
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empty($saved['domain']) || |
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empty($saved['urls']) || |
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!is_array($saved['urls']) |
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) { |
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return false; |
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} |
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|
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# Parse saved domain + incoming URL |
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$saved_domain = wp_parse_url($saved['domain'], PHP_URL_HOST); |
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$incoming_domain = wp_parse_url($url, PHP_URL_HOST); |
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|
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# Domain mismatch - not crawled |
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if (empty($saved_domain) || empty($incoming_domain) || strcasecmp($saved_domain, $incoming_domain) !== 0) { |
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return false; |
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} |
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|
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# Parse incoming path (ignore query string) |
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$parsed_url = wp_parse_url($url); |
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$url_path = $parsed_url['path'] ?? '/'; |
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|
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# Ensure path starts with / but don't modify trailing slashes |
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# Otto stores paths exactly as they appear in URLs |
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if (substr($url_path, 0, 1) !== '/') { |
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$url_path = '/' . $url_path; |
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} |
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|
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# Compare against crawled URLs - exact match |
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foreach ($saved['urls'] as $crawled_url) { |
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if (!is_string($crawled_url)) { |
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continue; |
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} |
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|
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# Direct comparison - Otto stores paths exactly as they are |
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if (strcasecmp($crawled_url, $url_path) === 0) { |
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return true; |
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} |
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} |
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|
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return false; |
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} |
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|
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# get the current route |
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function get_route(){ |
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|
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# check if we're in an HTTP context |
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if(empty($_SERVER['HTTP_HOST']) || empty($_SERVER['REQUEST_URI'])){ |
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# not in HTTP context (CLI, cron, etc.), return false |
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return false; |
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} |
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|
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# get req scheme |
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$scheme = ( is_ssl() ? 'https' : 'http' ); |
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|
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# get req host |
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$host = $_SERVER['HTTP_HOST']; |
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|
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# get the uri — strip query string before building the route. |
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# OTTO suggestions are canonical-URL-based; query parameters (Kinsta cache-bypass |
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# tokens, UTM params, tracking params, etc.) never produce different OTTO content. |
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# Stripping them ensures that: |
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# - The transient populated via a Kinsta BYPASS request (always has ?params) is |
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# shared with the clean-URL MISS request (no params). |
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# - The OTTO API is called with the canonical URL, not a noisy variant. |
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$request_uri = strtok($_SERVER['REQUEST_URI'], '?') ?: $_SERVER['REQUEST_URI']; |
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|
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# return the formatted url |
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return $scheme . '://' . $host . $request_uri; |
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} |
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|
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# get the html for a route |
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# OPTION 1 IMPLEMENTATION: Use transient cache for suggestions |
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function get_route_html($route, $cache_track_key = null, $suggestions = null){ |
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# If suggestions already provided (from render_route_html), use them directly |
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if ($suggestions !== null && is_array($suggestions)) { |
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# Process route with provided suggestions data |
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return $this->o_html->process_route_with_data($route, $suggestions, ''); |
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} |
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|
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# Get OTTO UUID from options |
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global $metasync_options; |
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$otto_uuid = $metasync_options['general']['otto_pixel_uuid'] ?? ''; |
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|
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if (empty($otto_uuid)) { |
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return false; |
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} |
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|
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# Get suggestions from transient cache (with API fallback) |
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$transient_cache = new Metasync_Otto_Transient_Cache($otto_uuid); |
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$track_key = $cache_track_key ?: md5($route); |
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$suggestions = $transient_cache->get_suggestions($route, $track_key); |
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|
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if (!$suggestions || !$transient_cache->has_payload($suggestions)) { |
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# No suggestions available |
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return false; |
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} |
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|
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# Process route with cached suggestions data |
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return $this->o_html->process_route_with_data($route, $suggestions, ''); |
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} |
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|
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|
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# render route html |
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function render_route_html(){ |
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|
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# Headless frontends do not consume WordPress-rendered HTML, so avoid |
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# suggestion lookups, buffering and internal fetches altogether. |
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# Falls back to a guarded direct read rather than skipping the check: |
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# silently skipping would render OTTO markup on a headless site. |
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# @phpstan-ignore-next-line function.alreadyNarrowedType |
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$headless = function_exists('metasync_headless_is_active') |
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? metasync_headless_is_active() |
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: (class_exists('Metasync_Headless_Config') && Metasync_Headless_Config::is_active()); |
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|
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if ($headless) { |
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return; |
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} |
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|
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# Clear per-request statics before any path runs. Harmless under PHP-FPM |
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# (the process ends with the request) but required under persistent-worker |
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# SAPIs, where a latched flag would silently disable cache capping and |
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# failure reporting for every later request in that worker. |
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# |
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# method_exists() is redundant to static analysis — this MR adds the method, |
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# so PHPStan proves the call always true. It is kept for the upgrade window: |
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# during a plugin update an opcache can still hold the previous |
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# Metasync_Otto_Render_Strategy, where class_exists() passes but the method |
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# is absent, and an unguarded static call would fatal the page. |
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# @phpstan-ignore-next-line function.alreadyNarrowedType |
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if (class_exists('Metasync_Otto_Render_Strategy') && method_exists('Metasync_Otto_Render_Strategy', 'reset_request_state')) { |
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Metasync_Otto_Render_Strategy::reset_request_state(); |
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} |
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|
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# Disable SG Cache for Brizy pages FIRST - before any other processing |
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# Using global function defined in otto_pixel.php |
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if (function_exists('metasync_otto_disable_sg_cache_for_brizy')) { |
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metasync_otto_disable_sg_cache_for_brizy(); |
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} |
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|
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# get the route |
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$route = $this->get_route(); |
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|
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# get the current page from globas |
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# this is to help us exclude the login page |
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|
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$page_now = $GLOBALS['pagenow'] ?? false; |
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|
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# check whether page now in excluded pages |
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if(in_array($page_now , $this->no_cache_pages)){ |
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|
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# stop otto |
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return; |
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} |
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|
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/* |
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#uncomment to test on local hosts |
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if(!empty($_GET['otto_test'])){ |
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|
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# @dev |
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$route = 'https://staging-perm.wp65.qa.internal.searchatlas.com/'; |
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} |
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*/ |
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|
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# OPTION 1 IMPLEMENTATION: Check transient cache instead of notification data |
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# This makes the system self-healing - works even if notifications fail |
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|
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# Get OTTO UUID from options |
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global $metasync_options; |
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$otto_uuid = $metasync_options['general']['otto_pixel_uuid'] ?? ''; |
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|
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if (empty($otto_uuid)) { |
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return; |
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} |
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|
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$transient_cache = new Metasync_Otto_Transient_Cache($otto_uuid); |
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|
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# Create tracking key for cache status |
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$cache_track_key = 'otto_' . md5($route); |
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|
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# Check if URL has OTTO suggestions (checks transient, calls API if needed) |
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# Use get_suggestions directly to track cache status |
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$suggestions = $transient_cache->get_suggestions($route, $cache_track_key); |
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|
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if (!$suggestions || !$transient_cache->has_payload($suggestions)) { |
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# No suggestions available for this URL. |
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$cache_status = Metasync_Otto_Transient_Cache::get_cache_status($cache_track_key); |
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|
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# Two very different situations reach this point, and they must be |
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# treated differently. |
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# |
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# A transient failure means the suggestions exist upstream but could |
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# not be retrieved on this request — the API errored or timed out, the |
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# per-minute budget was spent, or another worker held the lock. The |
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# next request will probably succeed. Serving the un-optimized page |
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# with normal cache headers lets a caching layer store it and hand it |
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# to everyone until its TTL expires, so cap how long it may be kept. |
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# |
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# Everything else here is a legitimate answer: OTTO simply has nothing |
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# for this URL (NO_SUGGESTIONS, including the 404 case). Most URLs on |
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# most sites are in that state permanently, so capping those would |
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# strip caching from the bulk of the site and move that load onto the |
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# origin. Those stay fully cacheable. |
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$transient_failures = ['RATE_LIMITED', 'LOCKED', 'API_ERROR']; |
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|
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if (in_array($cache_status, $transient_failures, true) |
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&& function_exists('metasync_otto_limit_response_cache')) { |
| 301 |
metasync_otto_limit_response_cache($cache_status); |
| 302 |
} |
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|
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# Set diagnostic headers only while Debug Mode is enabled. |
| 305 |
if (!headers_sent() && Metasync_Otto_Render_Strategy::diagnostics_enabled()) { |
| 306 |
header('X-MetaSync-OTTO-Cache: ' . Metasync_Otto_Render_Strategy::display_cache_status($cache_status ?: 'NO_SUGGESTIONS')); |
| 307 |
header('X-MetaSync-OTTO-Method: NONE'); |
| 308 |
} |
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return; |
| 310 |
} |
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|
| 312 |
# comment out for fixing pagination issues |
| 313 |
# $route = rtrim($route, '/'); |
| 314 |
|
| 315 |
# SiteGround's page cache is no longer disabled up-front for every OTTO page. |
| 316 |
# The cacheability decision now happens on the HTTP path in render_via_http(), |
| 317 |
# AFTER the internal fetch — only session/form pages and incomplete renders are |
| 318 |
# blocked, so plain content pages are finally cacheable. (SiteGround always uses |
| 319 |
# the HTTP path; the disable is a no-op off SiteGround, so nothing else loses it.) |
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|
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# Analyze what OTTO is providing for SEO plugin blocking |
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$blocking_flags = $this->analyze_otto_blocking($suggestions); |
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|
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# Get cache status for headers |
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$cache_status = Metasync_Otto_Transient_Cache::get_cache_status($cache_track_key); |
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|
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# RENDER PRIORITY: |
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# 1. WP Rocket rocket_buffer filter — WP Rocket caches OTTO-modified HTML, |
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# so Kinsta also caches the correct version. No exit(), no cache bypass. |
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# 2. Output Buffer (fast) — for environments without WP Rocket. |
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# 3. HTTP Request (last resort) — exits early, bypasses all caching. |
| 332 |
try { |
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# Safety check: ensure render strategy class exists |
| 334 |
if (!class_exists('Metasync_Otto_Render_Strategy')) { |
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# Class not loaded - use HTTP method as fallback |
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$this->render_via_http($route, $suggestions, $cache_track_key, $cache_status); |
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return; |
| 338 |
} |
| 339 |
|
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# WP ROCKET PATH: highest priority when WP Rocket is active. |
| 341 |
# rocket_buffer fires inside WP Rocket's own cache pipeline, so the |
| 342 |
# cache file WP Rocket writes (and that Kinsta stores) is already |
| 343 |
# OTTO-modified. Eliminates the race where WP Rocket saved pre-OTTO HTML. |
| 344 |
if (class_exists('WP_Rocket')) { |
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$wp_rocket_compat_mode = Metasync_Otto_Config::get_wp_rocket_compat_mode(); |
| 346 |
if ($wp_rocket_compat_mode !== 'http') { |
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# disable_otto exits in metasync_start_otto() before we get here, so |
| 348 |
# only 'http' compat mode needs to skip the rocket_buffer path. |
| 349 |
$this->render_via_rocket_buffer($suggestions, $blocking_flags, $cache_status); |
| 350 |
return; |
| 351 |
} |
| 352 |
} |
| 353 |
|
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$render_method = Metasync_Otto_Render_Strategy::determine_method(); |
| 355 |
|
| 356 |
if ($render_method === Metasync_Otto_Render_Strategy::METHOD_BUFFER) { |
| 357 |
# FAST PATH: Use output buffer approach |
| 358 |
$result = $this->render_via_buffer($route, $suggestions, $blocking_flags, $cache_status); |
| 359 |
|
| 360 |
if ($result === true) { |
| 361 |
# Buffer is now active, WordPress will continue rendering |
| 362 |
# OTTO modifications will be applied when buffer flushes |
| 363 |
return; |
| 364 |
} |
| 365 |
|
| 366 |
# Buffer approach failed, fall back to HTTP method |
| 367 |
$render_method = Metasync_Otto_Render_Strategy::METHOD_HTTP; |
| 368 |
} |
| 369 |
|
| 370 |
if ($render_method === Metasync_Otto_Render_Strategy::METHOD_HTTP) { |
| 371 |
# FALLBACK PATH: Use traditional HTTP request approach |
| 372 |
$this->render_via_http($route, $suggestions, $cache_track_key, $cache_status); |
| 373 |
} |
| 374 |
} catch (Exception $e) { |
| 375 |
# Any exception in the render strategy - fall back to HTTP method |
| 376 |
$this->render_via_http($route, $suggestions, $cache_track_key, $cache_status); |
| 377 |
} catch (Error $e) { |
| 378 |
# PHP 7+ Error (like TypeError) - fall back to HTTP method |
| 379 |
$this->render_via_http($route, $suggestions, $cache_track_key, $cache_status); |
| 380 |
} |
| 381 |
} |
| 382 |
|
| 383 |
/** |
| 384 |
* Stop WP Rocket writing the current response to its disk cache. |
| 385 |
* |
| 386 |
* DONOTCACHEPAGE is not sufficient from inside the rocket_buffer filter: WP |
| 387 |
* Rocket reads that constant when it decides whether to buffer the request, |
| 388 |
* which has already happened by the time the filter runs. It evaluates |
| 389 |
* do_rocket_generate_caching_files immediately before writing the file, so |
| 390 |
* that is the only lever still effective at this point. |
| 391 |
* |
| 392 |
* This matters more than the response headers do. A page served from WP |
| 393 |
* Rocket's disk cache is delivered by rewrite rules without invoking PHP, so |
| 394 |
* once a bad file is on disk no header can override it — only deleting the |
| 395 |
* file or waiting out Rocket's own expiry will clear it. |
| 396 |
* |
| 397 |
* PHP_INT_MAX priority so a site's own filters cannot re-enable the write. |
| 398 |
*/ |
| 399 |
private static function block_rocket_cache_write() { |
| 400 |
if (!defined('DONOTCACHEPAGE')) { |
| 401 |
define('DONOTCACHEPAGE', true); |
| 402 |
} |
| 403 |
|
| 404 |
add_filter('do_rocket_generate_caching_files', '__return_false', PHP_INT_MAX); |
| 405 |
} |
| 406 |
|
| 407 |
/** |
| 408 |
* Render page using WP Rocket's rocket_buffer filter (PREFERRED for WP Rocket sites) |
| 409 |
* |
| 410 |
* When WP Rocket is active, hooking into rocket_buffer ensures WP Rocket |
| 411 |
* caches the OTTO-modified HTML. This means: |
| 412 |
* - WP Rocket's cache file = OTTO-modified HTML ✓ |
| 413 |
* - Kinsta FastCGI cache = WP Rocket output = OTTO-modified HTML ✓ |
| 414 |
* - No exit() = proper cache lifecycle ✓ |
| 415 |
* |
| 416 |
* The filter fires on every uncached PHP request. Once WP Rocket has cached |
| 417 |
* the result, subsequent requests are served directly from cache with zero PHP. |
| 418 |
* |
| 419 |
* @param array $suggestions OTTO suggestions data |
| 420 |
* @param array $blocking_flags SEO plugin blocking flags |
| 421 |
* @param string $cache_status Cache status for X-MetaSync-* headers |
| 422 |
*/ |
| 423 |
private function render_via_rocket_buffer($suggestions, $blocking_flags, $cache_status) { |
| 424 |
$o_html = $this->o_html; |
| 425 |
|
| 426 |
# Hook into WP Rocket's HTML buffer at priority 1 so other rocket_buffer |
| 427 |
# filters (minifiers, CDN rewriters, etc.) run on already-OTTO-modified HTML. |
| 428 |
add_filter('rocket_buffer', function($html) use ($o_html, $suggestions, $blocking_flags) { |
| 429 |
if (empty($html) || strlen($html) < 100) { |
| 430 |
// Tell WP Rocket not to cache this empty/broken response. The |
| 431 |
// constant alone is too late here (see block_rocket_cache_write), |
| 432 |
// so the write-time filter is applied as well. |
| 433 |
self::block_rocket_cache_write(); |
| 434 |
return $html; |
| 435 |
} |
| 436 |
|
| 437 |
# Only process full HTML documents — skip partials, JSON, error responses |
| 438 |
if (stripos($html, '<html') === false && stripos($html, '<!DOCTYPE') === false) { |
| 439 |
return $html; |
| 440 |
} |
| 441 |
|
| 442 |
# Pass blocking context to the HTML processor (suppresses Yoast/Rank Math tags |
| 443 |
# that OTTO is replacing, preventing duplicates in the final HTML) |
| 444 |
$data = $suggestions; |
| 445 |
if (!empty($blocking_flags)) { |
| 446 |
$data['_otto_blocking'] = $blocking_flags; |
| 447 |
} |
| 448 |
|
| 449 |
# From here on we hold usable suggestions, so any exit that returns |
| 450 |
# $html unmodified is a genuine failure: WP Rocket would write the |
| 451 |
# un-optimized markup to its cache file, and whatever sits in front of |
| 452 |
# it would then serve that copy. This is worse than the plain buffer |
| 453 |
# path, because the bad page is persisted on disk as well as at the |
| 454 |
# edge — and this route exists specifically to make the cached copy the |
| 455 |
# optimized one. |
| 456 |
# |
| 457 |
# Note that DONOTCACHEPAGE alone does NOT prevent that write. WP Rocket |
| 458 |
# evaluates the constant when it decides whether to buffer the page, |
| 459 |
# which has already happened by the time this filter runs. The |
| 460 |
# do_rocket_generate_caching_files filter is evaluated immediately |
| 461 |
# before the file is written, so it is the only lever still available |
| 462 |
# from here. A disk-cached page is served by rewrite rules without |
| 463 |
# invoking PHP, so no response header can undo it afterwards. |
| 464 |
try { |
| 465 |
$modified = $o_html->process_html_directly($html, $data); |
| 466 |
# Sanity check: modified HTML must be at least 50% the size of original |
| 467 |
if ($modified && strlen($modified) > strlen($html) * 0.5) { |
| 468 |
return $modified; |
| 469 |
} |
| 470 |
|
| 471 |
# An unprocessable document (oversized / over the memory budget) is |
| 472 |
# a permanent property of the page, not a failure to retry. Leave it |
| 473 |
# fully cacheable — capping it would make the most expensive page on |
| 474 |
# the site uncacheable forever for no gain. |
| 475 |
if (class_exists('Metasync_Otto_Render_Strategy') |
| 476 |
&& Metasync_Otto_Render_Strategy::document_was_unprocessable()) { |
| 477 |
return $html; |
| 478 |
} |
| 479 |
|
| 480 |
# Either the rewrite returned nothing usable, or the result was so |
| 481 |
# much smaller than the input that it is assumed to be mangled. |
| 482 |
self::block_rocket_cache_write(); |
| 483 |
if (function_exists('metasync_otto_limit_response_cache')) { |
| 484 |
metasync_otto_limit_response_cache('RENDER_DISCARDED_ROCKET'); |
| 485 |
} |
| 486 |
if (function_exists('metasync_otto_report_render_failure')) { |
| 487 |
metasync_otto_report_render_failure( |
| 488 |
'RENDER_DISCARDED_ROCKET', |
| 489 |
'OTTO rewrite produced no usable output on the WP Rocket path', |
| 490 |
[ |
| 491 |
'original_bytes' => strlen($html), |
| 492 |
'result_bytes' => is_string($modified) ? strlen($modified) : 0, |
| 493 |
'render_method' => 'wp_rocket', |
| 494 |
], |
| 495 |
'warning' |
| 496 |
); |
| 497 |
} |
| 498 |
} catch (Exception $e) { |
| 499 |
// Fall through — return original HTML on any failure |
| 500 |
self::block_rocket_cache_write(); |
| 501 |
if (function_exists('metasync_otto_limit_response_cache')) { |
| 502 |
metasync_otto_limit_response_cache('RENDER_EXCEPTION_ROCKET'); |
| 503 |
} |
| 504 |
if (function_exists('metasync_otto_report_render_failure')) { |
| 505 |
metasync_otto_report_render_failure( |
| 506 |
'RENDER_EXCEPTION_ROCKET', |
| 507 |
'OTTO rewrite threw on the WP Rocket path: ' . $e->getMessage(), |
| 508 |
['render_method' => 'wp_rocket', 'exception' => get_class($e)], |
| 509 |
'error' |
| 510 |
); |
| 511 |
} |
| 512 |
} catch (Error $e) { |
| 513 |
// Fall through — return original HTML on any failure |
| 514 |
self::block_rocket_cache_write(); |
| 515 |
if (function_exists('metasync_otto_limit_response_cache')) { |
| 516 |
metasync_otto_limit_response_cache('RENDER_EXCEPTION_ROCKET'); |
| 517 |
} |
| 518 |
if (function_exists('metasync_otto_report_render_failure')) { |
| 519 |
metasync_otto_report_render_failure( |
| 520 |
'RENDER_EXCEPTION_ROCKET', |
| 521 |
'OTTO rewrite errored on the WP Rocket path: ' . $e->getMessage(), |
| 522 |
['render_method' => 'wp_rocket', 'error' => get_class($e)], |
| 523 |
'error' |
| 524 |
); |
| 525 |
} |
| 526 |
} |
| 527 |
|
| 528 |
return $html; |
| 529 |
}, 1); |
| 530 |
|
| 531 |
# Block SEO plugins before wp_head fires so duplicate tags aren't output |
| 532 |
$description_tags = $blocking_flags['block_description_tags'] ?? []; |
| 533 |
$has_description_tags = !empty($description_tags); |
| 534 |
if ($blocking_flags['block_title'] || $has_description_tags) { |
| 535 |
if (function_exists('metasync_otto_block_seo_plugins')) { |
| 536 |
metasync_otto_block_seo_plugins( |
| 537 |
$blocking_flags['block_title'], |
| 538 |
$has_description_tags, |
| 539 |
$description_tags |
| 540 |
); |
| 541 |
} |
| 542 |
} |
| 543 |
|
| 544 |
# Send X-MetaSync-* diagnostic headers before WordPress outputs anything |
| 545 |
if (!headers_sent()) { |
| 546 |
Metasync_Otto_Render_Strategy::set_current_method(Metasync_Otto_Render_Strategy::METHOD_WP_ROCKET); |
| 547 |
Metasync_Otto_Render_Strategy::send_headers($cache_status); |
| 548 |
} |
| 549 |
|
| 550 |
# Return — WordPress continues its normal render lifecycle. |
| 551 |
# WP Rocket's buffer captures the full HTML, fires rocket_buffer, |
| 552 |
# our callback modifies it, and WP Rocket caches the OTTO version. |
| 553 |
} |
| 554 |
|
| 555 |
/** |
| 556 |
* Analyze OTTO suggestions to determine what to block from SEO plugins |
| 557 |
* |
| 558 |
* @param array $suggestions OTTO suggestions data |
| 559 |
* @return array Blocking flags |
| 560 |
*/ |
| 561 |
private function analyze_otto_blocking($suggestions) { |
| 562 |
$has_otto_title = false; |
| 563 |
$otto_description_tags = []; // Track specific description tags Otto provides |
| 564 |
|
| 565 |
if (!empty($suggestions['header_replacements']) && is_array($suggestions['header_replacements'])) { |
| 566 |
foreach ($suggestions['header_replacements'] as $item) { |
| 567 |
if (!empty($item['type'])) { |
| 568 |
# Check if OTTO has title |
| 569 |
if ($item['type'] == 'title' && !empty($item['recommended_value'])) { |
| 570 |
$has_otto_title = true; |
| 571 |
} |
| 572 |
# Check if OTTO has description - track specific tag types |
| 573 |
if ($item['type'] == 'meta') { |
| 574 |
# Check for meta[name=description] |
| 575 |
if (!empty($item['name']) && $item['name'] == 'description' && !empty($item['recommended_value'])) { |
| 576 |
$otto_description_tags[] = 'meta[name=description]'; |
| 577 |
} |
| 578 |
# Check for meta[property=og:description] |
| 579 |
if (!empty($item['property']) && $item['property'] == 'og:description' && !empty($item['recommended_value'])) { |
| 580 |
$otto_description_tags[] = 'meta[property=og:description]'; |
| 581 |
} |
| 582 |
# Check for meta[name=twitter:description] |
| 583 |
if (!empty($item['name']) && $item['name'] == 'twitter:description' && !empty($item['recommended_value'])) { |
| 584 |
$otto_description_tags[] = 'meta[name=twitter:description]'; |
| 585 |
} |
| 586 |
} |
| 587 |
} |
| 588 |
} |
| 589 |
} |
| 590 |
|
| 591 |
# Check header_html_insertion for description |
| 592 |
# Must have a non-empty content value, otherwise Yoast would be blocked with nothing to replace it |
| 593 |
if (!empty($suggestions['header_html_insertion'])) { |
| 594 |
if (preg_match('/<meta[^>]*name=["\']description["\'][^>]*content=["\']([^"\']+)["\'][^>]*>/i', $suggestions['header_html_insertion'])) { |
| 595 |
$otto_description_tags[] = 'meta[name=description]'; |
| 596 |
} |
| 597 |
} |
| 598 |
|
| 599 |
# Remove duplicates |
| 600 |
$otto_description_tags = array_unique($otto_description_tags); |
| 601 |
|
| 602 |
return [ |
| 603 |
'block_title' => $has_otto_title, |
| 604 |
'block_description_tags' => $otto_description_tags, // Pass array of specific tags |
| 605 |
]; |
| 606 |
} |
| 607 |
|
| 608 |
/** |
| 609 |
* Render page using output buffer approach (FAST) |
| 610 |
* Eliminates the internal HTTP request by capturing WordPress output directly |
| 611 |
* |
| 612 |
* @param string $route Current page route |
| 613 |
* @param array $suggestions OTTO suggestions data |
| 614 |
* @param array $blocking_flags SEO plugin blocking flags |
| 615 |
* @param string $cache_status Cache status for headers |
| 616 |
* @return bool True if buffer started successfully, false to fall back to HTTP |
| 617 |
*/ |
| 618 |
private function render_via_buffer($route, $suggestions, $blocking_flags, $cache_status) { |
| 619 |
# Try to start output buffer |
| 620 |
$buffer_started = Metasync_Otto_Render_Strategy::start_buffer( |
| 621 |
$suggestions, |
| 622 |
$route, |
| 623 |
$this->o_html, |
| 624 |
$blocking_flags |
| 625 |
); |
| 626 |
|
| 627 |
if (!$buffer_started) { |
| 628 |
# Buffer failed to start |
| 629 |
return false; |
| 630 |
} |
| 631 |
|
| 632 |
# Buffer is active - send headers now (before any output) |
| 633 |
if (!headers_sent()) { |
| 634 |
Metasync_Otto_Render_Strategy::send_headers($cache_status); |
| 635 |
} |
| 636 |
|
| 637 |
# Block SEO plugins if needed (for the buffered output) |
| 638 |
$description_tags = $blocking_flags['block_description_tags'] ?? []; |
| 639 |
$has_description_tags = !empty($description_tags); |
| 640 |
if ($blocking_flags['block_title'] || $has_description_tags) { |
| 641 |
if (function_exists('metasync_otto_block_seo_plugins')) { |
| 642 |
metasync_otto_block_seo_plugins( |
| 643 |
$blocking_flags['block_title'], |
| 644 |
$has_description_tags, |
| 645 |
$description_tags |
| 646 |
); |
| 647 |
} |
| 648 |
} |
| 649 |
|
| 650 |
# Return true - WordPress will continue rendering, buffer will capture and process |
| 651 |
return true; |
| 652 |
} |
| 653 |
|
| 654 |
/** |
| 655 |
* Render page using HTTP request approach (FALLBACK) |
| 656 |
* Makes internal wp_remote_get request to fetch page HTML |
| 657 |
* |
| 658 |
* @param string $route Current page route |
| 659 |
* @param array $suggestions OTTO suggestions data |
| 660 |
* @param string $cache_track_key Cache tracking key |
| 661 |
* @param string $cache_status Cache status for headers |
| 662 |
*/ |
| 663 |
private function render_via_http($route, $suggestions, $cache_track_key, $cache_status) { |
| 664 |
# Set method indicator |
| 665 |
Metasync_Otto_Render_Strategy::set_current_method(Metasync_Otto_Render_Strategy::METHOD_HTTP); |
| 666 |
|
| 667 |
# On Divi sites, skip OTTO for the first HTTP render per page |
| 668 |
# per 24h. OTTO's internal wp_remote_get creates corrupted CSS cache |
| 669 |
# files in et-cache/{post_id}/ (wrong server context). By returning |
| 670 |
# false once, WordPress renders the page normally — building correct |
| 671 |
# Divi CSS caches. Subsequent OTTO renders within 24h use those caches. |
| 672 |
# The transient stores the activation timestamp so it auto-invalidates |
| 673 |
# when the plugin is deactivated/reactivated. |
| 674 |
if (defined('ET_CORE_VERSION')) { |
| 675 |
$cache_key = 'otto_divi_css_fix_' . md5($route); |
| 676 |
$activated = get_option('metasync_activated_at', ''); |
| 677 |
$cached = get_transient($cache_key); |
| 678 |
if ($cached === false || $cached !== $activated) { |
| 679 |
set_transient($cache_key, $activated, DAY_IN_SECONDS); |
| 680 |
# Deliberate one-off skip, and the next request renders correctly — |
| 681 |
# so cap how long this un-optimized copy may be cached rather than |
| 682 |
# letting a caching layer pin it for its full TTL. |
| 683 |
if (function_exists('metasync_otto_limit_response_cache')) { |
| 684 |
metasync_otto_limit_response_cache('DIVI_FIRST_RENDER_SKIP'); |
| 685 |
} |
| 686 |
return false; |
| 687 |
} |
| 688 |
} |
| 689 |
|
| 690 |
# check if we have the route html (pass suggestions to avoid duplicate API call) |
| 691 |
$route_html = $this->get_route_html($route, $cache_track_key, $suggestions); |
| 692 |
|
| 693 |
# check that route html is valid |
| 694 |
if(empty($route_html)){ |
| 695 |
# Fetch failed / empty (e.g. SG Optimizer truncated the internal response) — |
| 696 |
# WordPress will serve the un-optimized page. Cap how long that copy may be |
| 697 |
# cached, using the same mechanism as the deliberate skips above rather than a |
| 698 |
# second, competing one: it reconciles existing directives, keeps logged-in |
| 699 |
# responses fully no-store, and never grants caching nothing had granted. |
| 700 |
if (function_exists('metasync_otto_limit_response_cache')) { |
| 701 |
metasync_otto_limit_response_cache('HTTP_FETCH_FAILED'); |
| 702 |
} |
| 703 |
return false; |
| 704 |
} |
| 705 |
|
| 706 |
$route_html_string = is_string($route_html) ? $route_html : $route_html->__toString(); |
| 707 |
|
| 708 |
# Detect incomplete Divi rendering in OTTO's HTTP render output. |
| 709 |
# OTTO's internal wp_remote_get runs in a different server context than the |
| 710 |
# normal page load. This can cause Divi to produce incomplete output: |
| 711 |
# |
| 712 |
# 1. Cold CSS cache: Divi outputs inline <style> blocks instead of external |
| 713 |
# <link> tags (TB CSS files not yet generated) |
| 714 |
# 2. Missing Google Fonts: Divi's font enqueue depends on request context |
| 715 |
# (cookies, headers) that differ in the internal fetch |
| 716 |
# |
| 717 |
# If OTTO serves this incomplete HTML via exit(), SG Optimizer caches it — |
| 718 |
# breaking CSS for all visitors until manual cache purge. |
| 719 |
# |
| 720 |
# Fix: skip OTTO for this request (return false), letting WordPress render |
| 721 |
# normally. This builds Divi's caches so the next OTTO request works correctly. |
| 722 |
# |
| 723 |
# Both checks below are self-resolving — the next render finds warm caches — |
| 724 |
# so the un-optimized copy served now gets a capped cache lifetime rather |
| 725 |
# than being pinned for a caching layer's full TTL. |
| 726 |
# |
| 727 |
# The remaining fail-open exits on this path are deliberately NOT capped. |
| 728 |
# They mean the site could not fetch its own page (blocked loopback request, |
| 729 |
# HTTP Basic Auth, a firewall rejecting the internal user-agent) or that the |
| 730 |
# document cannot be processed at all. Those are whole-site, permanent |
| 731 |
# conditions: OTTO cannot work on any page, so capping cache lifetime would |
| 732 |
# rescue nothing while moving the entire site's traffic to the origin. |
| 733 |
if (defined('ET_CORE_VERSION')) { |
| 734 |
# Check 1: Cold TB CSS cache (inline styles instead of external link) |
| 735 |
if (preg_match('/<style\s[^>]*id=["\']et-core-unified-tb-[^"\']*-cached-inline-styles["\']/', $route_html_string)) { |
| 736 |
if (function_exists('metasync_otto_limit_response_cache')) { |
| 737 |
metasync_otto_limit_response_cache('DIVI_COLD_CSS_CACHE'); |
| 738 |
} |
| 739 |
return false; |
| 740 |
} |
| 741 |
# Check 2: Missing Google Fonts CSS (Divi enqueues this on every page) |
| 742 |
# Normal render has: <link ... id='et-builder-googlefonts-cached-css' ...> |
| 743 |
# or <link ... id='et-builder-googlefonts-css' ...> |
| 744 |
# If neither is present, the internal fetch didn't load fonts properly. |
| 745 |
if (strpos($route_html_string, 'et-builder-googlefonts') === false |
| 746 |
&& strpos($route_html_string, 'fonts.googleapis.com') === false |
| 747 |
) { |
| 748 |
if (function_exists('metasync_otto_limit_response_cache')) { |
| 749 |
metasync_otto_limit_response_cache('DIVI_MISSING_FONTS'); |
| 750 |
} |
| 751 |
return false; |
| 752 |
} |
| 753 |
} |
| 754 |
|
| 755 |
if (strpos($route_html_string, 'pix-sliding-headline-2') !== false || strpos($route_html_string, 'pix-intro-sliding-text') !== false) { |
| 756 |
# Only apply fix within sliding text contexts to avoid breaking other layouts |
| 757 |
$route_html_string = preg_replace('#(</span></span>)(<span\s+class=["\'][^"\']*slide-in-container[^"\']*["\'][^>]*>)#i', '$1 $2', $route_html_string); |
| 758 |
} |
| 759 |
|
| 760 |
# Fix for Elementor widgets - preserve whitespace between inline spans |
| 761 |
# This prevents text/elements from appearing merged when HTML is minified |
| 762 |
|
| 763 |
# Fix for Elementor social icons (elementor-grid-item) |
| 764 |
if (strpos($route_html_string, 'elementor-social-icons-wrapper') !== false) { |
| 765 |
# Add whitespace between closing and opening span tags within elementor-grid-item |
| 766 |
$route_html_string = preg_replace( |
| 767 |
'#(</span>)(<span\s+class=["\'][^"\']*elementor-grid-item[^"\']*["\'][^>]*>)#i', |
| 768 |
'$1 $2', |
| 769 |
$route_html_string |
| 770 |
); |
| 771 |
} |
| 772 |
|
| 773 |
# Fix for Elementor animated headline (elementor-headline-text-wrapper) |
| 774 |
if (strpos($route_html_string, 'elementor-headline') !== false) { |
| 775 |
# Add whitespace between closing and opening span tags with elementor-headline-text-wrapper |
| 776 |
$route_html_string = preg_replace( |
| 777 |
'#(</span>)(<span\s+class=["\'][^"\']*elementor-headline-text-wrapper[^"\']*["\'][^>]*>)#i', |
| 778 |
'$1 $2', |
| 779 |
$route_html_string |
| 780 |
); |
| 781 |
} |
| 782 |
|
| 783 |
# Check for Revolution Slider to determine if special handling is needed |
| 784 |
# Check for both Revolution Slider 6 (<rs-module-wrap>) and Revolution Slider 7 (<sr7-module>) |
| 785 |
$has_revslider = (strpos($route_html_string, '<rs-module-wrap') !== false || strpos($route_html_string, '<sr7-module') !== false); |
| 786 |
|
| 787 |
if($has_revslider){ |
| 788 |
# Revolution Slider detected - fire WordPress hooks to ensure proper initialization |
| 789 |
# Use output buffering to prevent hooks from corrupting Otto's processed HTML |
| 790 |
ob_start(); |
| 791 |
do_action('wp_enqueue_scripts'); |
| 792 |
$discarded_output = ob_get_clean(); |
| 793 |
|
| 794 |
} |
| 795 |
|
| 796 |
# If Divi's module-design CSS is missing from OTTO output, |
| 797 |
# fetch it directly and inject it. This handles the case where the |
| 798 |
# internal wp_remote_get response was truncated by SG Optimizer's parser. |
| 799 |
if (strpos($route_html_string, 'et-builder-module-design') === false |
| 800 |
&& function_exists('et_theme_builder_decorate_page_resource_slug') |
| 801 |
&& function_exists('et_core_page_resource_get') |
| 802 |
) { |
| 803 |
# Try to get Divi's inline CSS from its page resource manager |
| 804 |
$post_id = get_the_ID(); |
| 805 |
if ($post_id) { |
| 806 |
$resource_slug = et_theme_builder_decorate_page_resource_slug($post_id, 'module-design'); |
| 807 |
$manager = et_core_page_resource_get('builder', $resource_slug, $post_id, 40); |
| 808 |
if ($manager && method_exists($manager, 'get_data')) { |
| 809 |
$css_data = $manager->get_data('inline'); |
| 810 |
if (!empty($css_data)) { |
| 811 |
$style_tag = '<style id="et-builder-' . esc_attr($resource_slug) . '-cached-inline-styles">' |
| 812 |
. wp_strip_all_tags($css_data) . '</style>'; |
| 813 |
$route_html_string = str_replace('</body>', $style_tag . "\n" . '</body>', $route_html_string); |
| 814 |
} |
| 815 |
} |
| 816 |
} |
| 817 |
} |
| 818 |
|
| 819 |
# Decide cacheability from the internal fetch + the final output, then serve. |
| 820 |
# 1) Hand the visitor the session their page was built around (fixes forms that |
| 821 |
# were silently failing on the HTTP path because the fetch cookie was dropped). |
| 822 |
# 2) Block shared caching when the fetched page set a cookie, when its own render |
| 823 |
# declared itself uncacheable (PHP's session cache-limiter — true for resumed |
| 824 |
# sessions too), when the visitor carries cart/auth cookies that change the |
| 825 |
# rendered content, or when the render came back incomplete. |
| 826 |
# 3) A plain, complete page gets no cache header at all → the host finally caches |
| 827 |
# it (the SiteGround/Oxygen relief this ticket is about). |
| 828 |
Metasync_Otto_Render_Strategy::passthrough_http_fetch_cookies(); |
| 829 |
|
| 830 |
$must_not_cache = |
| 831 |
Metasync_Otto_Render_Strategy::http_fetch_had_cookie() |
| 832 |
|| Metasync_Otto_Render_Strategy::http_fetch_no_cache() |
| 833 |
|| Metasync_Otto_Render_Strategy::request_has_visitor_specific_cookie() |
| 834 |
|| !Metasync_Otto_Render_Strategy::http_output_is_complete($route_html_string); |
| 835 |
|
| 836 |
# Send response headers |
| 837 |
Metasync_Otto_Render_Strategy::send_headers($cache_status); |
| 838 |
|
| 839 |
if ($must_not_cache) { |
| 840 |
Metasync_Otto_Render_Strategy::block_http_cache(); |
| 841 |
} |
| 842 |
|
| 843 |
# continue to render the html |
| 844 |
echo $route_html_string; |
| 845 |
|
| 846 |
# prevent further wp execution |
| 847 |
exit(); |
| 848 |
} |
| 849 |
|
| 850 |
} |
| 851 |
|
