From f44d88c4e1aecc5d4c11b66adcf4a3de805c2dfd Mon Sep 17 00:00:00 2001
From: Dion Hulse <dd32@git.wordpress.org>
Date: Sat, 16 Jan 2010 23:11:28 +0000
Subject: [PATCH] Correctly set the body on Curl requests with an empty body.
 Add a defensive check to WP_Http_Encoding::decompress to prevent the
 decompression functions running on empty strings. Fixes #11912

git-svn-id: https://develop.svn.wordpress.org/trunk@12739 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/http.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/wp-includes/http.php b/wp-includes/http.php
index e8d1344ccd..35caa402e9 100644
--- a/wp-includes/http.php
+++ b/wp-includes/http.php
@@ -1360,7 +1360,10 @@ class WP_Http_Curl {
 		if ( !empty($theResponse) ) {
 			$headerLength = curl_getinfo($handle, CURLINFO_HEADER_SIZE);
 			$theHeaders = trim( substr($theResponse, 0, $headerLength) );
-			$theBody = substr( $theResponse, $headerLength );
+			if ( strlen($theResponse) > $headerLength )
+				$theBody = substr( $theResponse, $headerLength );
+			else
+				$theBody = '';
 			if ( false !== strrpos($theHeaders, "\r\n\r\n") ) {
 				$headerParts = explode("\r\n\r\n", $theHeaders);
 				$theHeaders = $headerParts[ count($headerParts) -1 ];
@@ -1817,6 +1820,9 @@ class WP_Http_Encoding {
 	 */
 	function decompress( $compressed, $length = null ) {
 
+		if ( empty($compressed) )
+			return $compressed;
+
 		if ( false !== ( $decompressed = @gzinflate( $compressed ) ) )
 			return $decompressed;