From 6a40ad8a2073de4ae05f1b31cb9e3237ea776153 Mon Sep 17 00:00:00 2001
From: Kegan Dougal <kegan@matrix.org>
Date: Thu, 26 Jan 2017 11:57:56 +0000
Subject: [PATCH] Fail the request if we clash files

Rather than make the file names incredibly long (by adding ms),
just 500 it and expect the user to resend.
---
 scripts/rageshake.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/rageshake.go b/scripts/rageshake.go
index 6ffd14768d..51532890b0 100644
--- a/scripts/rageshake.go
+++ b/scripts/rageshake.go
@@ -37,6 +37,9 @@ func respond(code int, w http.ResponseWriter) {
 }
 
 func gzipAndSave(data []byte, filepath string) error {
+	if _, err := os.Stat(filepath); err == nil {
+		return fmt.Errorf("file already exists") // the user can just retry
+	}
 	var b bytes.Buffer
 	gz := gzip.NewWriter(&b)
 	if _, err := gz.Write(data); err != nil {