#!/bin/sh

# global options passed by udhcpc
# what to run
# $1        - which command to run, possible are: bound|deconfig|nak|renew
# router    - routers address
# subnet    - the subnet
# dhcptype  - type of dhcp
# interface - which iface gets configured
# serverid  - ip of the dhcd server
# dns       - dns to use
# ip        - ip-address to use
# lease     - lease time of a dhcp configuration
# mask      - network mask to use

# renew dhcp leases
bound()
{
	local RESOLV_CONF="/etc/resolv.conf"
	local BROADCAST
	local NETMASK
	local i

	[[ -n ${broadcast} ]] && BROADCAST="broadcast ${broadcast}"
	[[ -n ${subnet} ]] && NETMASK="netmask ${subnet}"

	/sbin/ifconfig ${interface} ${ip} ${BROADCAST} ${NETMASK}

	if [ -n "${router}" ]
	then
		echo "deleting routers"
		while /sbin/route del default gw 0.0.0.0 dev ${interface}
		do :
		done

		metric=0
		for i in ${router}
		do
			/sbin/route add default gw ${i} dev ${interface} metric $((metric++))
		done
	fi

	echo -n > ${RESOLV_CONF}
	[[ -n ${domain} ]] && echo "domain ${domain}" >> ${RESOLV_CONF}
	for i in ${dns}
	do
		echo adding dns ${i}
		echo "nameserver ${i}" >> ${RESOLV_CONF}
	done
}

renew()
{
	# same as bound()
	bound
}

deconfig()
{
	/sbin/ifconfig ${interface} 0.0.0.0
}

# what to do if a dhcp request failed
nak()
{
	echo "Received a NAK: ${message}"
}


case $1 in
	bound) bound ;;
	renew) renew ;;
	deconfig) deconfig ;;
	nak) nak ;;
esac