From d8ca73ac18cfe9f04fd0559e541385338dc3b620 Mon Sep 17 00:00:00 2001
From: Kevin Chung <kchung@ctfd.io>
Date: Sat, 22 Jun 2019 13:36:45 -0700
Subject: [PATCH] Prevent browser from caching the export (#1033)

* Add `cache_timeout` parameter to `send_file`response in `/admin/export` to prevent the browser from caching the export
* Closes #1032
---
 CTFd/admin/__init__.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CTFd/admin/__init__.py b/CTFd/admin/__init__.py
index f12465be..8872fe49 100644
--- a/CTFd/admin/__init__.py
+++ b/CTFd/admin/__init__.py
@@ -110,7 +110,9 @@ def export_ctf():
     ctf_name = ctf_config.ctf_name()
     day = datetime.datetime.now().strftime("%Y-%m-%d")
     full_name = u"{}.{}.zip".format(ctf_name, day)
-    return send_file(backup, as_attachment=True, attachment_filename=full_name)
+    return send_file(
+        backup, cache_timeout=-1, as_attachment=True, attachment_filename=full_name
+    )
 
 
 @admin.route("/admin/export/csv")