From 5975772ed848ce46a4e7a45b15f5950ddf97786c Mon Sep 17 00:00:00 2001
From: Kevin Bushiri <36192217+keevBush@users.noreply.github.com>
Date: Thu, 19 Mar 2020 15:50:24 +0200
Subject: [PATCH] cmd/stdiscosrv: Only generate keypair if it doesn't exist
 (fixes #5809) (#6419)

---
 cmd/stdiscosrv/main.go | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/cmd/stdiscosrv/main.go b/cmd/stdiscosrv/main.go
index 8224b1b96..f87c668dc 100644
--- a/cmd/stdiscosrv/main.go
+++ b/cmd/stdiscosrv/main.go
@@ -98,14 +98,15 @@ func main() {
 	}
 
 	cert, err := tls.LoadX509KeyPair(certFile, keyFile)
-	if err != nil {
+	if os.IsNotExist(err) {
 		log.Println("Failed to load keypair. Generating one, this might take a while...")
 		cert, err = tlsutil.NewCertificate(certFile, keyFile, "stdiscosrv", 20*365)
 		if err != nil {
 			log.Fatalln("Failed to generate X509 key pair:", err)
 		}
+	} else if err != nil {
+		log.Fatalln("Failed to load keypair:", err)
 	}
-
 	devID := protocol.NewDeviceID(cert.Certificate[0])
 	log.Println("Server device ID is", devID)