From 94de617fe69028d2d173e04db9f6141ea90fe4c4 Mon Sep 17 00:00:00 2001
From: randomshell <randshell@protonmail.com>
Date: Thu, 2 Jul 2020 15:51:20 +0000
Subject: [PATCH] Add check for existing clients

---
 wireguard-install.sh | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/wireguard-install.sh b/wireguard-install.sh
index 5e5b541..ac0ba2b 100644
--- a/wireguard-install.sh
+++ b/wireguard-install.sh
@@ -19,6 +19,14 @@ function addClient() {
 		read -rp "Client name: " -e CLIENT_NAME
 	done
 
+	CLIENT_EXISTS=$(grep -c -E "^### Client $CLIENT_NAME\$" "/etc/wireguard/$SERVER_WG_NIC.conf")
+
+	if [[ $CLIENT_EXISTS == '1' ]]; then
+		echo ""
+		echo "A client with the specified name was already created, please choose another name."
+		exit 1
+	fi
+
 	CLIENT_WG_IPV4="10.66.66.2"
 	read -rp "Client's WireGuard IPv4 " -e -i "$CLIENT_WG_IPV4" CLIENT_WG_IPV4