From 380d27331ea48dce81340dd11210056859b99b07 Mon Sep 17 00:00:00 2001
From: Scott Taylor <wonderboymusic@git.wordpress.org>
Date: Tue, 13 Oct 2015 01:00:04 +0000
Subject: [PATCH] XML-RPC: Add a filter, `xmlrpc_memory_limit`, to allow the
 value of `$xmlrpc_memory_limit` to be increased.

Props ankit.gade.
Fixes #29957.


git-svn-id: https://develop.svn.wordpress.org/trunk@35095 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-includes/class-IXR.php | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/wp-includes/class-IXR.php b/src/wp-includes/class-IXR.php
index 7cc4c20fb9..9109cbd4d6 100644
--- a/src/wp-includes/class-IXR.php
+++ b/src/wp-includes/class-IXR.php
@@ -268,7 +268,18 @@ class IXR_Message
         xml_set_object($this->_parser, $this);
         xml_set_element_handler($this->_parser, 'tag_open', 'tag_close');
         xml_set_character_data_handler($this->_parser, 'cdata');
-        $chunk_size = 262144; // 256Kb, parse in chunks to avoid the RAM usage on very large messages
+
+        // 256Kb, parse in chunks to avoid the RAM usage on very large messages
+        $xmlrpc_memory_limit = 262144;
+        /**
+         * Filter the maximum memory that can be used to parse an XML-RPC reponse message.
+         *
+         * @since 4.4.0
+         *
+         * @param int $xmlrpc_memory_limit Default value of memory allotted.
+         */
+        $chunk_size = apply_filters( 'xmlrpc_memory_limit', $xmlrpc_memory_limit );
+
         $final = false;
         do {
             if (strlen($this->message) <= $chunk_size) {