#!/bin/sh -e

RCLIB=/lib/rcscripts

. $RCLIB/sh/error.sh

notify_netd () {

	gdbus call --address unix:path=/run/netd/internal -d a.b -o / \

		-m com.axis.Net.Internal.DHCPV4 $interface \

		"{'address': <'$ip'>,

'netmask': <'$subnet'>,

'broadcast': <'$broadcast'>,

'routers': <'$router'>,

'hostname': <'$hostname'>,

'domainname': <'$domain'>,

'searchdomains': <'$search'>,

'nameservers': <'$dns'>,

'timeservers': <'$ntpsrv'>}" >/dev/null ||

		error "$0: Failed to notify netd of updated DHCPv4 lease for $interface"

}

case $1 in

	deconfig)

		active_state=$(systemctl is-active dhcp4@${interface}.service || :)

		# Do not notify netd if service is deactivating. Either netd stopped dhcp

		# client or system is shutting down, either way, let netd handle the

		# clearing of the lease

		[ "$active_state" = deactivating ] || notify_netd

		;

	leasefail)

		warning "Could not obtain a DHCPv4 lease"

		notify_netd

		;

	nak)

		warning "Got NAK from the DHCPv4 server"

		notify_netd

		;

	bound|renew)

		# Validate address and netmask

		[ "$ip" ] && [ "$subnet" ] ||

			error "DHCPv4 address: $ip and/or mask: $subnet' missing"

		# If no broadcast is set, calculate one from mask

		if [ -z "$broadcast" ]; then

			# The output of this command looks like this: BROADCAST=192.168.0.255

			eval $(ipcalc -b $ip $subnet) ||

				error "Failed to calculate broadcast from DHCPv4 IP:$ip mask:$subnet"

			broadcast=$BROADCAST

		fi

		# Notify netd that the lease has been updated

		notify_netd

		;

	*)

		error "Unknown DHCPv4 state set when calling script ($1)"

		;

esac