From 455feda3ac49e84675ad6f88c444d51dcbdbd43e Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@users.mediawiki.org>
Date: Mon, 29 Oct 2007 17:41:55 +0000
Subject: [PATCH] * (bug 11795) Be more paranoid about confirming
 accept-encoding header is present

---
 RELEASE-NOTES              |  1 +
 includes/OutputHandler.php | 10 ++++++----
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index 2d9412ad39..dcf93d7765 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -120,6 +120,7 @@ it from source control: http://www.mediawiki.org/wiki/Download_from_SVN
 * (bug 11744) Incorrect return value from Title::getParentCategories()
 * (bug 11762) Fix native language name of Akan (ak)
 * (bug 11722) Fix inconsistent case in unprotect tabs
+* (bug 11795) Be more paranoid about confirming accept-encoding header is present
 
 === API changes in 1.12 ===
 
diff --git a/includes/OutputHandler.php b/includes/OutputHandler.php
index d8ac12b531..dd3649804a 100644
--- a/includes/OutputHandler.php
+++ b/includes/OutputHandler.php
@@ -61,10 +61,12 @@ function wfGzipHandler( $s ) {
 		return $s;
 	}
 	
-	$tokens = preg_split( '/[,; ]/', $_SERVER['HTTP_ACCEPT_ENCODING'] );
-	if ( in_array( 'gzip', $tokens ) ) {
-		header( 'Content-Encoding: gzip' );
-		$s = gzencode( $s, 3 );
+	if( isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) ) {
+		$tokens = preg_split( '/[,; ]/', $_SERVER['HTTP_ACCEPT_ENCODING'] );
+		if ( in_array( 'gzip', $tokens ) ) {
+			header( 'Content-Encoding: gzip' );
+			$s = gzencode( $s, 3 );
+		}
 	}
 	
 	// Set vary header if it hasn't been set already
-- 
2.20.1