From ff52bee1a2c1b3f6654c8bfe41d1a3d8630e2b55 Mon Sep 17 00:00:00 2001
From: thomascube <thomas@roundcube.net>
Date: Thu, 01 Mar 2007 15:40:00 -0500
Subject: [PATCH] Solved wrong caching of message preview (#1484153, #1484236)
---
program/include/rcube_shared.inc | 37 ++++++++++++++++++++++++++++++++++---
1 files changed, 34 insertions(+), 3 deletions(-)
diff --git a/program/include/rcube_shared.inc b/program/include/rcube_shared.inc
index ba63c82..558fbf7 100644
--- a/program/include/rcube_shared.inc
+++ b/program/include/rcube_shared.inc
@@ -1216,17 +1216,48 @@
// send header with expire date 30 days in future
-function send_future_expire_header()
+function send_future_expire_header($offset=2600000)
{
if (headers_sent())
return;
- header("Expires: ".gmdate("D, d M Y H:i:s", mktime()+2600000)." GMT");
- header("Cache-Control: ");
+ header("Expires: ".gmdate("D, d M Y H:i:s", mktime()+$offset)." GMT");
+ header("Cache-Control: max-age=$offset");
header("Pragma: ");
}
+// check request for If-Modified-Since and send an according response
+function send_modified_header($mdate, $etag=null)
+{
+ if (headers_sent())
+ return;
+
+ $iscached = false;
+ if ($_SERVER['HTTP_IF_MODIFIED_SINCE'] && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $mdate)
+ $iscached = true;
+
+ $etag = $etag ? "\"$etag\"" : null;
+ if ($etag && $_SERVER['HTTP_IF_NONE_MATCH'] == $etag)
+ $iscached = true;
+
+ if ($iscached)
+ header("HTTP/1.x 304 Not Modified");
+ else
+ header("Last-Modified: ".gmdate("D, d M Y H:i:s", $mdate)." GMT");
+
+ header("Cache-Control: max-age=0");
+ header("Expires: ");
+ header("Pragma: ");
+
+ if ($etag)
+ header("Etag: $etag");
+
+ if ($iscached)
+ exit;
+}
+
+
// function to convert an array to a javascript array
function array2js($arr, $type='')
{
--
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