#!/bin/bash
# $Id$

#%rlevels: 3:s 0:k
#%start: 99
#%stop: 01

#deps
#%needs:
#%before:
#%after:

source /etc/conf.d/rc
source $rc_functions

# mysql settings
source /etc/alxconfig-ng/config.rc
# helper functions
source ${ALX_FUNCTIONS}/mysqlfunctions
source ${ALX_FUNCTIONS}/serial_functions
source ${ALX_FUNCTIONS}/common

# unset vars which may kill us
unset ALX_SERIAL ALX_STATE ALX_IFACE

# get current system state
if [ -f /etc/alxconfig-ng/state/state ]
then
	source /etc/alxconfig-ng/state/state
else
	ALX_STATE=error
fi

if [ -f ${SETTINGSPATH}/confd-networking ]
then
	ALX_IFACE="$(< ${SETTINGSPATH}/confd-networking)"
fi
[[ -z ${ALX_IFACE} ]] && export ALX_IFACE=eth0

# need to put this to an extra init script which will be 
# executed when the real network is up and not the preliminary.
# nice name is alx_connected_state or sth like this
set_current_network_state()
{
	local cur_ip cur_mac cur_mtime id

	rc_mecho "Register system to database"

	cur_ip=$(/sbin/ifconfig ${ALX_IFACE} | sed -n '/addr:/s/ [^r]*..//gp')
	cur_mac=$(/sbin/ifconfig ${ALX_IFACE} | grep HWaddr | cut -d ' ' -f11)
	cur_mtime=$(date +%s)

	# validate current serial
	if ! validate_serial "${ALX_SERIAL}" "${ALX_REG_DATE}" "${cur_mac}"
	then
		# abort on non valid serial
		ALX_STATE="invalid serial"
		echo "ALX_STATE=\"${ALX_STATE}\"" > /etc/alxconfig-ng/state/state
		show_invalid_serial_msg
		exit 1
	fi

	# first check if an entry exist with my serial
	# if it exist update this entry else insert a new one
	id=$(mysqldo "select serial from state_connected where serial=${ALX_SERIAL};")

	if [ -n "${id}" ]
	then
		# run an update

		# nice status
		$CURS_UP
		$SET_WCOL
		rc_echo "[ SN: ${ALX_SERIAL}, U, ${ALX_STATE} ]"

		mysqldo "update state_connected set
				hostname='${HOSTNAME}',
				ip='${cur_ip}',
				mac='${cur_mac}',
				state='${ALX_STATE}',
				mtime='${cur_mtime}'
			where serial=${ALX_SERIAL};"
	else
		# run an insert

		# nice status
		$CURS_UP
		$SET_WCOL
		rc_echo "[ SN: ${ALX_SERIAL}, N, ${ALX_STATE} ]"

		mysqldo "insert into state_connected(
				serial,
				hostname,
				ip,
				mac,
				state,
				mtime
			)
			values(
				'${ALX_SERIAL}',
				'${HOSTNAME}',
				'${cur_ip}',
				'${cur_mac}',
				'${ALX_STATE}',
				'${cur_mtime}'
			);"
	fi
}


# need to put this to an extra init script which will 
# be executed first when the system is going down.
# nice name is alx_connected_state or sth like this
unset_alx_connected()
{
	local cur_mac

	cur_mac=$(/sbin/ifconfig ${ALX_IFACE} | grep HWaddr | cut -d ' ' -f11)

	rc_mecho "Unregister system from database"

	# nice status
	$CURS_UP
	$SET_WCOL
	rc_echo "[ SN: ${ALX_SERIAL} ]"

	mysqldo "delete from state_connected where serial='${ALX_SERIAL}' and mac='${cur_mac}';"
	evaluate_retval
}


########### starts here ################

# first of all get current system serial
if [ -f /etc/alxconfig-ng/serial ]
then
	source /etc/alxconfig-ng/serial
else
	ALX_SERIAL=0
fi

case $1 in
	start)
		# check if mysql server is reachable
		# if not abort this script
		reach_mysql_server || exit 1

		set_current_network_state
		evaluate_retval
		;;

	stop)
		# check if mysql server is reachable
		# if not abort this script
		reach_mysql_server || exit 1

		unset_alx_connected
		evaluate_retval
		;;
	*)
		rc_echo "Usage: $0 {start|stop} ..."
		;;
esac