ddns-scripts: initialise the is_glue variable

Improve the code as suggested by Christian Schoenebeck.

Signed-off-by: Mathias Kresin <dev@kresin.me>

net/ddns-scripts/Makefile

@@ -12,7 +12,7 @@ PKG_NAME:=ddns-scripts
 PKG_VERSION:=2.7.1
 # Release == build
 # increase on changes of services files or tld_names.dat
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_LICENSE:=GPL-2.0
 PKG_MAINTAINER:=Christian Schoenebeck <christian.schoenebeck@gmail.com>

net/ddns-scripts/files/dynamic_dns_functions.sh

@@ -956,7 +956,7 @@ get_registered_ip() {
 	# 1	no IP detected
 
 	[ $# -lt 1 -o $# -gt 2 ] && write_log 12 "Error calling 'get_registered_ip()' - wrong number of parameters"
-	[ $is_glue -eq 1 ] && [ -z "$(which host)" ] && write_log 12 "Update of glue records is only supported using BIND host"
+	[ $is_glue -eq 1 -a -z "$(which host)" ] && write_log 12 "Update of glue records is only supported using BIND host"
 	write_log 7 "Detect registered/public IP"
 
 	# set correct regular expression
@@ -1040,8 +1040,6 @@ get_registered_ip() {
 			write_log 7 "$(cat $ERRFILE)"
 		else
 			if [ "$__PROG" = "BIND host" ]; then
-				__DATA=$(cat $DATFILE | awk -F "address " '/has/ {print $2; exit}' )
-
 				if [ $is_glue -eq 1 ]; then
 					__DATA=$(cat $DATFILE | grep "^$lookup_host" | grep -m 1 -o "$__REGEX" )
 				else

net/ddns-scripts/files/dynamic_dns_lucihelper.sh

@@ -33,6 +33,7 @@ case "$1" in
 		force_ipversion=${4:-"0"}	# Force IP Version - default 0 - No
 		force_dnstcp=${5:-"0"}		# Force TCP on DNS - default 0 - No
 		dns_server=${6:-""}		# DNS server - default No DNS
+		is_glue=${7:-"0"}		# Is glue record - default 0 - No
 		write_log 7 "-----> get_registered_ip IP"
 		get_registered_ip IP
 		__RET=$?

net/ddns-scripts/files/dynamic_dns_updater.sh

@@ -131,6 +131,7 @@ ERR_LAST=$?	# save return code - equal 0 if SECTION_ID found
 [ -z "$force_ipversion" ] && force_ipversion=0	# default let system decide
 [ -z "$force_dnstcp" ]	  && force_dnstcp=0	# default UDP
 [ -z "$ip_source" ]	  && ip_source="network"
+[ -z "$is_glue" ]	  && is_glue=0		# default the ddns record is not a glue record
 [ "$ip_source" = "network" -a -z "$ip_network" -a $use_ipv6 -eq 0 ] && ip_network="wan"  # IPv4: default wan
 [ "$ip_source" = "network" -a -z "$ip_network" -a $use_ipv6 -eq 1 ] && ip_network="wan6" # IPv6: default wan6
 [ "$ip_source" = "web" -a -z "$ip_url" -a $use_ipv6 -eq 0 ] && ip_url="http://checkip.dyndns.com"