From bee2ccd36607cc8ec1f5091e041e75e1eeb8cca9 Mon Sep 17 00:00:00 2001
From: Christian Poessinger <christian@poessinger.com>
Date: Thu, 11 Mar 2021 18:58:00 +0100
Subject: dhcp-server: T2927: Add empty args if does not possible to determine
 variables

(cherry-picked from commit 2f8b33a26e63e5b9ac4e697b9312f2238d6241f3)
---
 src/system/on-dhcp-event.sh | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

(limited to 'src/system/on-dhcp-event.sh')

diff --git a/src/system/on-dhcp-event.sh b/src/system/on-dhcp-event.sh
index 1ccc7acf2..b612ad599 100755
--- a/src/system/on-dhcp-event.sh
+++ b/src/system/on-dhcp-event.sh
@@ -22,21 +22,21 @@ domain=$5
 file=/etc/hosts
 changes=0
 
-if [ -z "$client_name" ]; then
-    logger -s -t on-dhcp-event "Client name was empty, using MAC \"$client_mac\" instead"
-    client_name=$(echo "client-"$client_mac | tr : -)
-fi
-
-if [ "$domain" == "..YYZ!" ]; then
-    client_fqdn_name=$client_name
-    client_search_expr=$client_name
-else
-    client_fqdn_name=$client_name.$domain
-    client_search_expr="$client_name\\.$domain"
-fi
-
 case "$action" in
   commit) # add mapping for new lease
+    if [ -z "$client_name" ]; then
+        logger -s -t on-dhcp-event "Client name was empty, using MAC \"$client_mac\" instead"
+        client_name=$(echo "client-"$client_mac | tr : -)
+    fi
+
+    if [ "$domain" == "..YYZ!" ]; then
+        client_fqdn_name=$client_name
+        client_search_expr=$client_name
+    else
+        client_fqdn_name=$client_name.$domain
+        client_search_expr="$client_name\\.$domain"
+    fi
+
     grep -q "   $client_search_expr     " $file
     if [ $? == 0 ]; then
        echo host $client_fqdn_name already exists, exiting
-- 
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