#/bin/bash
########################################################################
# Begin
#
# Description : DHCP Client Script (initrd version)
#
# Authors     : Arne Fitzenreiter - arne_f@ipfire.org
#
# Version     : 02.00
#
# Notes       : 
#
########################################################################

LEASE_FILE="/var/ipfire/dhcpc/dhcpcd-${interface}.info"

export_lease() {
	set | grep "^new_" | sed "s|^new_||g" | \
	sed "s|'||g" | sort > ${LEASE_FILE}
}

make_resolvconf() {
	local DNS="$(grep 'domain_name_servers' ${LEASE_FILE} | cut -d'=' -f2)"
	local DNS1="$(echo ${DNS} | cut -d' ' -f1)"
	local DNS2="$(echo ${DNS} | cut -d' ' -f2)"

	(
		echo "nameserver ${DNS1}"
		echo "nameserver ${DNS2}"
	) > /etc/resolv.conf
}

case "${reason}" in
	PREINIT)
		# Configure MTU
		if [ -n "${new_interface_mtu}" ] && [ ${new_interface_mtu} -gt 576 ]; then
			echo "Setting MTU to ${new_interface_mtu}"
			ip link set "${interface}" mtu "${new_interface_mtu}"
		fi
		;;

	BOUND|INFORM|REBIND|REBOOT|RENEW|TIMEOUT|STATIC)
		# Export all information about the newly received lease
		# to file
		export_lease

		# Create system configuration files
		make_resolvconf

		# Set time
		ntpdate "time.ipfire.org"
		;;

	EXPIRE|FAIL|IPV4LL|NAK|NOCARRIER|RELEASE|STOP)
		rm -f "${LEASE_FILE}"
		;;
esac

exit 0