Move detection code to separate scripts for easy customization

bin/firewall-sosdg

@@ -106,16 +106,12 @@ fi
 
 
 if [[ "$EXTIF" == "auto" ]]; then
-	if [ ! "$EXTIF_FIND" ]; then
-		
-	EXTIF=$EXTIF_FIND
+	EXTIF=`$EXTIF_FIND`
 	display_c YELLOW "Found default interface at: ${BLUE}${EXTIF}${DEFAULT_COLOR}"
 fi
 
 if [[ "$EXTIP" == "auto" ]]; then
-	if [ ! "$EXTIP_FIND" ]; then
-		EXTIP=$(expr "`ifconfig ${EXTIF}`" : '.*inet addr:\([^ ]*\).*')
-	fi
+	EXTIP=`$EXTIP_FIND`
 	display_c YELLOW "Found default interface IP at: ${BLUE}${EXTIP}${DEFAULT_COLOR}"
 fi