From a415c29efee45520ae252d2aa28f1083a521cd7b Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 09:56:49 +0200
Subject: Adding upstream version 6.4.3+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 wp-includes/ms-network.php | 141 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 wp-includes/ms-network.php

(limited to 'wp-includes/ms-network.php')

diff --git a/wp-includes/ms-network.php b/wp-includes/ms-network.php
new file mode 100644
index 0000000..8ab8819
--- /dev/null
+++ b/wp-includes/ms-network.php
@@ -0,0 +1,141 @@
+<?php
+/**
+ * Network API
+ *
+ * @package WordPress
+ * @subpackage Multisite
+ * @since 5.1.0
+ */
+
+/**
+ * Retrieves network data given a network ID or network object.
+ *
+ * Network data will be cached and returned after being passed through a filter.
+ * If the provided network is empty, the current network global will be used.
+ *
+ * @since 4.6.0
+ *
+ * @global WP_Network $current_site
+ *
+ * @param WP_Network|int|null $network Optional. Network to retrieve. Default is the current network.
+ * @return WP_Network|null The network object or null if not found.
+ */
+function get_network( $network = null ) {
+	global $current_site;
+	if ( empty( $network ) && isset( $current_site ) ) {
+		$network = $current_site;
+	}
+
+	if ( $network instanceof WP_Network ) {
+		$_network = $network;
+	} elseif ( is_object( $network ) ) {
+		$_network = new WP_Network( $network );
+	} else {
+		$_network = WP_Network::get_instance( $network );
+	}
+
+	if ( ! $_network ) {
+		return null;
+	}
+
+	/**
+	 * Fires after a network is retrieved.
+	 *
+	 * @since 4.6.0
+	 *
+	 * @param WP_Network $_network Network data.
+	 */
+	$_network = apply_filters( 'get_network', $_network );
+
+	return $_network;
+}
+
+/**
+ * Retrieves a list of networks.
+ *
+ * @since 4.6.0
+ *
+ * @param string|array $args Optional. Array or string of arguments. See WP_Network_Query::parse_query()
+ *                           for information on accepted arguments. Default empty array.
+ * @return array|int List of WP_Network objects, a list of network IDs when 'fields' is set to 'ids',
+ *                   or the number of networks when 'count' is passed as a query var.
+ */
+function get_networks( $args = array() ) {
+	$query = new WP_Network_Query();
+
+	return $query->query( $args );
+}
+
+/**
+ * Removes a network from the object cache.
+ *
+ * @since 4.6.0
+ *
+ * @global bool $_wp_suspend_cache_invalidation
+ *
+ * @param int|array $ids Network ID or an array of network IDs to remove from cache.
+ */
+function clean_network_cache( $ids ) {
+	global $_wp_suspend_cache_invalidation;
+
+	if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
+		return;
+	}
+
+	$network_ids = (array) $ids;
+	wp_cache_delete_multiple( $network_ids, 'networks' );
+
+	foreach ( $network_ids as $id ) {
+		/**
+		 * Fires immediately after a network has been removed from the object cache.
+		 *
+		 * @since 4.6.0
+		 *
+		 * @param int $id Network ID.
+		 */
+		do_action( 'clean_network_cache', $id );
+	}
+
+	wp_cache_set_last_changed( 'networks' );
+}
+
+/**
+ * Updates the network cache of given networks.
+ *
+ * Will add the networks in $networks to the cache. If network ID already exists
+ * in the network cache then it will not be updated. The network is added to the
+ * cache using the network group with the key using the ID of the networks.
+ *
+ * @since 4.6.0
+ *
+ * @param array $networks Array of network row objects.
+ */
+function update_network_cache( $networks ) {
+	$data = array();
+	foreach ( (array) $networks as $network ) {
+		$data[ $network->id ] = $network;
+	}
+	wp_cache_add_multiple( $data, 'networks' );
+}
+
+/**
+ * Adds any networks from the given IDs to the cache that do not already exist in cache.
+ *
+ * @since 4.6.0
+ * @since 6.1.0 This function is no longer marked as "private".
+ *
+ * @see update_network_cache()
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param array $network_ids Array of network IDs.
+ */
+function _prime_network_caches( $network_ids ) {
+	global $wpdb;
+
+	$non_cached_ids = _get_non_cached_ids( $network_ids, 'networks' );
+	if ( ! empty( $non_cached_ids ) ) {
+		$fresh_networks = $wpdb->get_results( sprintf( "SELECT $wpdb->site.* FROM $wpdb->site WHERE id IN (%s)", implode( ',', array_map( 'intval', $non_cached_ids ) ) ) ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
+
+		update_network_cache( $fresh_networks );
+	}
+}
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