From 7fee28764127f855966fcb315922b415de8ecf75 Mon Sep 17 00:00:00 2001
From: Grégoire Duchêne <gduchene@awhk.org>
Date: Sun, 16 Aug 2020 13:29:19 +0100
Subject: Add CN to the SAN list if any SAN is defined

---
 main.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/main.go b/main.go
index 7fee39e..455842d 100644
--- a/main.go
+++ b/main.go
@@ -20,6 +20,7 @@ import (
 	"math/big"
 	"net"
 	"os"
+	"sort"
 	"time"
 )
 
@@ -167,6 +168,11 @@ func main() {
 	if country == "" {
 		log.Fatalln("error: -c is required")
 	}
+	// See RFC 6125§6.4.4.
+	if len(dnsNames) > 0 || len(ips) > 0 {
+		dnsNames = append(dnsNames, commonName)
+	}
+	sort.Strings(dnsNames)
 	if from.t.IsZero() {
 		from.t = time.Now()
 	}
-- 
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