From d857c68fd91b1bcf586a30d86108b1898c2bb2d3 Mon Sep 17 00:00:00 2001
From: Steve Clay <steve@mrclay.org>
Date: Mon, 29 Oct 2012 20:59:21 -0400
Subject: Fixes #4895: Output valid ETag and Expires headers

---
 mod/groups/icon.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'mod/groups/icon.php')

diff --git a/mod/groups/icon.php b/mod/groups/icon.php
index 1bd240ea6..ebdc1eb6d 100644
--- a/mod/groups/icon.php
+++ b/mod/groups/icon.php
@@ -18,7 +18,7 @@ if (!($group instanceof ElggGroup)) {
 
 // If is the same ETag, content didn't changed.
 $etag = $group->icontime . $group_guid;
-if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && trim($_SERVER['HTTP_IF_NONE_MATCH']) == $etag) {
+if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && trim($_SERVER['HTTP_IF_NONE_MATCH']) == "\"$etag\"") {
 	header("HTTP/1.1 304 Not Modified");
 	exit;
 }
@@ -46,9 +46,9 @@ if (!$success) {
 }
 
 header("Content-type: image/jpeg");
-header('Expires: ' . date('r',time() + 864000));
+header('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', strtotime("+10 days")), true);
 header("Pragma: public");
 header("Cache-Control: public");
 header("Content-Length: " . strlen($contents));
-header("ETag: $etag");
+header("ETag: \"$etag\"");
 echo $contents;
-- 
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