From 97c8d3377cf4f07dceabe7c19f4698e8e359f368 Mon Sep 17 00:00:00 2001
From: thomascube <thomas@roundcube.net>
Date: Sun, 7 Jan 2007 18:14:08 +0000
Subject: Applied patch for preview caching (closes #1484186)

---
 program/steps/mail/show.inc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'program/steps')

diff --git a/program/steps/mail/show.inc b/program/steps/mail/show.inc
index aa5b3733d..b1fa7cfb7 100644
--- a/program/steps/mail/show.inc
+++ b/program/steps/mail/show.inc
@@ -23,8 +23,11 @@ require_once('Mail/mimeDecode.php');
 
 $PRINT_MODE = $_action=='print' ? TRUE : FALSE;
 
-// allow this request to be cached
-send_future_expire_header();
+// allow caching, unless remote images are present
+if ((bool)get_input_value('_safe', RCUBE_INPUT_GET))
+  send_nocacheing_headers();
+else
+  send_future_expire_header();
 
 // similar code as in program/steps/mail/get.inc
 if ($_GET['_uid'])
-- 
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