From 23b9ad0459ad3a4783260c13d2251011346ab533 Mon Sep 17 00:00:00 2001
From: Chris Lewicki <chris@lewicki.dev>
Date: Tue, 5 May 2020 19:55:53 -0400
Subject: [PATCH] add check for secondary DNS

Added a quick if statement to check for a secondary DNS server. If left with the default or provided with one, uses it. Otherwise, eliminates trailing comma from DNS variable assignment.
---
 wireguard-install.sh | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/wireguard-install.sh b/wireguard-install.sh
index f6768fb..c0a413b 100644
--- a/wireguard-install.sh
+++ b/wireguard-install.sh
@@ -39,7 +39,14 @@ function addClient() {
 	echo "[Interface]
 PrivateKey = $CLIENT_PRIV_KEY
 Address = $CLIENT_WG_IPV4/24,$CLIENT_WG_IPV6/64
-DNS = $CLIENT_DNS_1,$CLIENT_DNS_2
+
+# Fix for bug where trailing comma is left if no secondary DNS specified
+if [ -z "$CLIENT_DNS_2" ]
+then
+	DNS = $CLIENT_DNS_1,$CLIENT_DNS_2
+else
+	DNS = $CLIENT_DNS_1
+fi
 
 [Peer]
 PublicKey = $SERVER_PUB_KEY