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<?php |
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|
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// IndexNow: instantly notifies Bing, Yandex, Naver, Seznam (and every IndexNow-compatible |
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// engine) when content is published or updated, so new pages don't sit waiting for a crawl. |
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// Google does not consume IndexNow; this complements the sitemap, it does not replace it. |
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// Spec: https://www.indexnow.org/documentation |
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class Meow_MWSEO_Modules_IndexNow |
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{ |
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private $core = null; |
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|
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public function __construct( $core ) { |
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$this->core = $core; |
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$this->init(); |
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} |
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|
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public function init() { |
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// Rides the Technical SEO module: one switch, fully automatic, on by default. |
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if ( !$this->core->get_option( 'technical_seo', true ) || !$this->core->get_option( 'indexnow', true ) ) { |
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return; |
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} |
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add_action( 'init', array( $this, 'serve_key_file' ), 0 ); |
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add_action( 'transition_post_status', array( $this, 'on_transition' ), 10, 3 ); |
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} |
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|
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// The key is self-generated once; engines verify ownership by fetching /{key}.txt. |
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public function get_key() { |
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$key = $this->core->get_option( 'indexnow_key', '' ); |
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if ( empty( $key ) ) { |
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$key = strtolower( wp_generate_password( 32, false, false ) ); |
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$this->core->update_option( 'indexnow_key', $key ); |
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} |
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return $key; |
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} |
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|
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// Serve the verification file at the site root without touching rewrite rules |
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// (works on every host and on multi-domain installs, where each domain serves it). |
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public function serve_key_file() { |
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if ( empty( $_SERVER['REQUEST_URI'] ) ) return; |
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$path = trim( (string) parse_url( $_SERVER['REQUEST_URI'], PHP_URL_PATH ), '/' ); |
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if ( substr( $path, -4 ) !== '.txt' || strlen( $path ) !== 36 ) return; |
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$key = $this->get_key(); |
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if ( $path !== $key . '.txt' ) return; |
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header( 'Content-Type: text/plain; charset=utf-8' ); |
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echo $key; |
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exit; |
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} |
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|
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public function on_transition( $new_status, $old_status, $post ) { |
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// Fires for first publish AND for updates of already-published posts. |
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if ( $new_status !== 'publish' || !$post || wp_is_post_revision( $post ) ) return; |
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|
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$public_types = get_post_types( array( 'public' => true ) ); |
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unset( $public_types['attachment'] ); |
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if ( !in_array( $post->post_type, $public_types, true ) ) return; |
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|
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// No-index posts are excluded on purpose; don't ask engines to fetch them. |
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$excluded = array_map( 'intval', (array) $this->core->get_option( 'sitemap_excluded_post_ids', [] ) ); |
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if ( in_array( (int) $post->ID, $excluded, true ) ) return; |
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|
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$url = get_permalink( $post ); |
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if ( !$url ) return; |
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|
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// Throttle: a burst of saves on the same post pings once every 10 minutes. |
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$lock = 'mwseo_indexnow_' . $post->ID; |
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if ( get_transient( $lock ) ) return; |
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set_transient( $lock, 1, 10 * MINUTE_IN_SECONDS ); |
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|
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$this->ping( array( $url ) ); |
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} |
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|
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// Submit URLs to api.indexnow.org (shared endpoint: one ping reaches every engine). |
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// Multi-domain installs (Polylang) group by host, since key location must match the host. |
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public function ping( $urls ) { |
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$urls = array_values( array_filter( array_map( 'esc_url_raw', (array) $urls ) ) ); |
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if ( empty( $urls ) ) return false; |
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|
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$key = $this->get_key(); |
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$by_host = array(); |
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foreach ( $urls as $url ) { |
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$host = parse_url( $url, PHP_URL_HOST ); |
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if ( !$host ) continue; |
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$by_host[ $host ][] = $url; |
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} |
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|
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foreach ( $by_host as $host => $host_urls ) { |
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$scheme = parse_url( $host_urls[0], PHP_URL_SCHEME ) ?: 'https'; |
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$body = array( |
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'host' => $host, |
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'key' => $key, |
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'keyLocation' => $scheme . '://' . $host . '/' . $key . '.txt', |
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'urlList' => array_slice( $host_urls, 0, 10000 ), |
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); |
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// Non-blocking: publishing must never wait on a third-party endpoint. |
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wp_remote_post( 'https://api.indexnow.org/indexnow', array( |
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'blocking' => false, |
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'timeout' => 3, |
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'headers' => array( 'Content-Type' => 'application/json; charset=utf-8' ), |
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'body' => wp_json_encode( $body ), |
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) ); |
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$this->core->log( '📣 IndexNow pinged ' . count( $host_urls ) . ' URL(s) on ' . $host ); |
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} |
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return true; |
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} |
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} |
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|
