From af935850cd233843c910cb1877294c4ac6115b9c Mon Sep 17 00:00:00 2001
From: Julian Gaal <22290570+juliangaal@users.noreply.github.com>
Date: Tue, 24 Nov 2020 15:33:39 +0100
Subject: [PATCH] Forbid interface names exceeding 15 chars in length (#157)

---
 wireguard-install.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/wireguard-install.sh b/wireguard-install.sh
index 9e09caa..cd0b5e0 100644
--- a/wireguard-install.sh
+++ b/wireguard-install.sh
@@ -79,7 +79,7 @@ function installQuestions() {
 		read -rp "Public interface: " -e -i "${SERVER_NIC}" SERVER_PUB_NIC
 	done
 
-	until [[ ${SERVER_WG_NIC} =~ ^[a-zA-Z0-9_]+$ ]]; do
+	until [[ ${SERVER_WG_NIC} =~ ^[a-zA-Z0-9_]+$ && ${#SERVER_WG_NIC} -lt 16 ]]; do
 		read -rp "WireGuard interface name: " -e -i wg0 SERVER_WG_NIC
 	done
 
@@ -219,9 +219,9 @@ function newClient() {
 
 	echo ""
 	echo "Tell me a name for the client."
-	echo "The name must consist of alphanumeric character. It may also include an underscore or a dash."
+	echo "The name must consist of alphanumeric character. It may also include an underscore or a dash and can't exceed 15 chars."
 
-	until [[ ${CLIENT_NAME} =~ ^[a-zA-Z0-9_-]+$ && ${CLIENT_EXISTS} == '0' ]]; do
+	until [[ ${CLIENT_NAME} =~ ^[a-zA-Z0-9_-]+$ && ${CLIENT_EXISTS} == '0' && ${#CLIENT_NAME} -lt 16 ]]; do
 		read -rp "Client name: " -e CLIENT_NAME
 		CLIENT_EXISTS=$(grep -c -E "^### Client ${CLIENT_NAME}\$" "/etc/wireguard/${SERVER_WG_NIC}.conf")