From 052ac0838560739e9e42934a8e0f9b0ab806434a Mon Sep 17 00:00:00 2001
From: Sergey Biryukov <sergeybiryukov@git.wordpress.org>
Date: Mon, 19 Oct 2020 21:14:06 +0000
Subject: [PATCH] Pings/Trackbacks: Split `do_all_pings()` into several
 functions:

* `do_all_pingbacks()`
* `do_all_enclosures()`
* `do_all_trackbacks()`

This allows for the specific removal/replacement of one of more services.

Props dshanske, garrett-eclipse, Mista-Flo, azaozz, hellofromTonya.
Fixes #36576.

git-svn-id: https://develop.svn.wordpress.org/trunk@49211 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-includes/comment.php         | 37 ++++++++++++++++++++++-------
 src/wp-includes/default-filters.php |  4 ++++
 2 files changed, 32 insertions(+), 9 deletions(-)

diff --git a/src/wp-includes/comment.php b/src/wp-includes/comment.php
index 71471eed12..49611147f5 100644
--- a/src/wp-includes/comment.php
+++ b/src/wp-includes/comment.php
@@ -2800,13 +2800,23 @@ function discover_pingback_server_uri( $url, $deprecated = '' ) {
  * Perform all pingbacks, enclosures, trackbacks, and send to pingback services.
  *
  * @since 2.1.0
- *
- * @global wpdb $wpdb WordPress database abstraction object.
+ * @since 5.6.0 Introduced `do_all_pings` action hook for individual services.
  */
 function do_all_pings() {
-	global $wpdb;
+	/**
+	 * Fires immediately after the `do_pings` event to hook services individually.
+	 *
+	 * @since 5.6.0
+	 */
+	do_action( 'do_all_pings' );
+}
 
-	// Do pingbacks.
+/**
+ * Perform all pingbacks.
+ *
+ * @since 5.6.0
+ */
+function do_all_pingbacks() {
 	$pings = get_posts(
 		array(
 			'post_type'        => get_post_types(),
@@ -2821,8 +2831,14 @@ function do_all_pings() {
 		delete_post_meta( $ping, '_pingme' );
 		pingback( null, $ping );
 	}
+}
 
-	// Do enclosures.
+/**
+ * Perform all enclosures.
+ *
+ * @since 5.6.0
+ */
+function do_all_enclosures() {
 	$enclosures = get_posts(
 		array(
 			'post_type'        => get_post_types(),
@@ -2837,8 +2853,14 @@ function do_all_pings() {
 		delete_post_meta( $enclosure, '_encloseme' );
 		do_enclose( null, $enclosure );
 	}
+}
 
-	// Do trackbacks.
+/**
+ * Perform all trackbacks.
+ *
+ * @since 5.6.0
+ */
+function do_all_trackbacks() {
 	$trackbacks = get_posts(
 		array(
 			'post_type'        => get_post_types(),
@@ -2853,9 +2875,6 @@ function do_all_pings() {
 		delete_post_meta( $trackback, '_trackbackme' );
 		do_trackbacks( $trackback );
 	}
-
-	// Do Update Services/Generic Pings.
-	generic_ping();
 }
 
 /**
diff --git a/src/wp-includes/default-filters.php b/src/wp-includes/default-filters.php
index dbc4fefb09..32727445dc 100644
--- a/src/wp-includes/default-filters.php
+++ b/src/wp-includes/default-filters.php
@@ -342,6 +342,10 @@ add_action( 'do_feed_rss', 'do_feed_rss', 10, 0 );
 add_action( 'do_feed_rss2', 'do_feed_rss2', 10, 1 );
 add_action( 'do_feed_atom', 'do_feed_atom', 10, 1 );
 add_action( 'do_pings', 'do_all_pings', 10, 0 );
+add_action( 'do_all_pings', 'do_all_pingbacks', 10, 0 );
+add_action( 'do_all_pings', 'do_all_enclosures', 10, 0 );
+add_action( 'do_all_pings', 'do_all_trackbacks', 10, 0 );
+add_action( 'do_all_pings', 'generic_ping', 10, 0 );
 add_action( 'do_robots', 'do_robots' );
 add_action( 'do_favicon', 'do_favicon' );
 add_action( 'set_comment_cookies', 'wp_set_comment_cookies', 10, 3 );