From 1c660aa45b1fe4662899063af95e3d2ed87272f1 Mon Sep 17 00:00:00 2001
From: Bob Mottram <bob@robotics.uk.to>
Date: Fri, 21 Oct 2016 15:13:48 +0100
Subject: [PATCH] Check wifi interface exists

---
 src/freedombone-utils-wifi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/freedombone-utils-wifi b/src/freedombone-utils-wifi
index 070365ca..cdf315a1 100755
--- a/src/freedombone-utils-wifi
+++ b/src/freedombone-utils-wifi
@@ -344,6 +344,11 @@ function networks_from_file {
         exit 4
     fi
 
+    if [[ $(config_param_exists "WIFI_INTERFACE") == "0" ]]; then
+        exit 5
+    fi
+    read_config_param "WIFI_INTERFACE"
+
     if [ ! -f /etc/network/interfaces_original ]; then
         if ! grep -q "# wifi enabled" /etc/network/interfaces; then
             cp /etc/network/interfaces /etc/network/interfaces_original