#!/bin/sh
VER=1.5
# ============================================================================
#
# Copyright (C) THALES. All rights reserved
# Author: Jean-Noel Raguenes
# Date : 07/12/2009
# - V1.1: Herve Petit 10/03/2010
#   reprise de la commande recuperation des @mac et @broadcast pour prendre
#   en compte le fait que l'interface eth1 a ete configuree
# - V1.2: Thomas Perennou 25/03/2013
#   Adaptation Wheezy et simplification des recuperation des adresses mac
#   et de broadcast
# - V1.4: Laurent Mazet 09/05/2014
#   Daemonisation
# - V1.5: Laurent Mazet & Thomas Perennou 03/12/2014
#   Legers correctifs
# ============================================================================

### BEGIN INIT INFO
# Provides:          wakeonlan
# Required-Start:    $network waitswitches
# Required-Stop:
# Should-Start:
# Default-Start:     S
# Default-Stop:
# Short-Description: WOL cluster blades
# Description:       Boot all cluster blades by WakeOnLan protocol
### END INIT INFO

DHCPCONF=/etc/dhcp/dhcpd.conf
ENABLE="yes"

PATH=/sbin:/usr/sbin:/bin:/usr/bin
[ -f /etc/default/wakeonlan ] && . /etc/default/wakeonlan
[ "$ENABLE" = "yes" ] || exit 0

. /lib/lsb/init-functions

do_start () {

    log_action_msg "Activate Wake On Lan"

    for mac in $(awk '{sub(/#.*/, "")} /host\s+trc[0-9]/ { gsub(/[;{}]/, " "); print $5}' $DHCPCONF); do
	broadcast=$(awk '{sub(/#.*/, "")} /'$mac'/ {print}' $DHCPCONF | sed 's/.* \([0-9.]*\)\..*/\1.255/')
        host=$(awk '{sub(/#.*/, "")} /'$mac'/ {gsub(/[{}]/, " "); print $2}' $DHCPCONF)
        log_action_msg "Wake-up $host (WOL $mac $broadcast)"
        wakeonlan -p 7 -i $broadcast $mac
    done
}

case "$1" in
    -v)
        echo "$(basename $0), version $VER"
	;;
    start)
        do_start
        ;;
    restart|reload|force-reload)
        echo "Error: argument '$1' not supported" >&2
        exit 3
        ;;
    stop)
        # No-op
        ;;
    *)
        echo "Usage: $0 start|stop" >&2
        exit 3
        ;;
esac

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