on-dhcp-event.sh
No OneTemporary
Actions

Size

1 KB

Referenced Files

None

Subscribers

None

on-dhcp-event.sh
View Options

	#!/bin/bash

	# This script came from ubnt.com forum user "bradd" in the following post
	# http://community.ubnt.com/t5/EdgeMAX/Automatic-DNS-resolution-of-DHCP-client-names/td-p/651311
	# It has been modified by Ubiquiti to update the /etc/host file
	# instead of adding to the CLI.
	# Thanks to forum user "itsmarcos" for bug fix & improvements
	# Thanks to forum user "ruudboon" for multiple domain fix
	# Thanks to forum user "chibby85" for expire patch and static-mapping

	if [ $# -lt 5 ]; then
	echo Invalid args
	logger -s -t on-dhcp-event "Invalid args \"$@\""
	exit 1
	fi

	action=$1
	client_name=$2
	client_ip=$3
	client_mac=$4
	domain=$5
	hostsd_client="/usr/bin/vyos-hostsd-client"

	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
	$hostsd_client --add-hosts "$client_fqdn_name,$client_ip" --tag "dhcp-server-$client_ip" --apply
	exit 0
	;;

	release) # delete mapping for released address
	$hostsd_client --delete-hosts --tag "dhcp-server-$client_ip" --apply
	exit 0
	;;

	*)
	logger -s -t on-dhcp-event "Invalid command \"$1\""
	exit 1
	;;
	esac

	exit 0