From 4a408843b0ef816daf70a472a02b78cd6073a4d5 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Sun, 06 Mar 2016 08:31:07 -0500
Subject: [PATCH] Protect download urls against CSRF using unique request tokens (#1490642) Send X-Frame-Options headers with every HTTP response

---
 program/steps/mail/viewsource.inc |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/program/steps/mail/viewsource.inc b/program/steps/mail/viewsource.inc
index 359d5d2..1e1fe26 100644
--- a/program/steps/mail/viewsource.inc
+++ b/program/steps/mail/viewsource.inc
@@ -19,18 +19,22 @@
  +-----------------------------------------------------------------------+
 */
 
+if (!empty($_GET['_save'])) {
+    $RCMAIL->request_security_check(rcube_utils::INPUT_GET);
+}
+
 ob_end_clean();
 
 // similar code as in program/steps/mail/get.inc
 if ($uid = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_GET)) {
     $headers = $RCMAIL->storage->get_message_headers($uid);
-    $charset = $headers->charset ? $headers->charset : $RCMAIL->config->get('default_charset');
+    $charset = $headers->charset ?: $RCMAIL->config->get('default_charset');
 
     header("Content-Type: text/plain; charset={$charset}");
 
     if (!empty($_GET['_save'])) {
         $subject  = rcube_mime::decode_header($headers->subject, $headers->charset);
-        $filename = ($subject ? $subject : $RCMAIL->config->get('product_name', 'email')) . '.eml';
+        $filename = ($subject ?: $RCMAIL->config->get('product_name', 'email')) . '.eml';
         $browser  = $RCMAIL->output->browser;
 
         if ($browser->ie)

--
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