#!/bin/sh
#------------------------------------------------------------------------------
# /etc/rc.d/rc910.arping
#
# Creation:     2007-03-14  lanspezi
# Last Update:  $Id$
#------------------------------------------------------------------------------

if [ "$HTTPD_ARPING" = "yes" -o -f /var/run/do_arping ]
then
    begin_script ARPING "check state of hosts ..."

    [ 0$HOST_N -eq 0 ] || for i in `seq 1 $HOST_N`
    do
        eval ipaddr='$HOST_'$i'_IP4'
        eval hname='$HOST_'$i'_NAME'
        translate_ip_net $ipaddr HOST_${i}_IP4 ipaddr || continue
        ipdev=`ip route get $ipaddr | sed -n "/dev /s/^.*dev \([^ ]*\) .*$/\1/p"`

        case $ipdev in
            tun*|lo|ppp*|ippp*)
                continue
            ;;
        esac
        ignore_entry=no
        [ 0$HTTPD_ARPING_IGNORE_N -eq 0 ] || for n in `seq 1 $HTTPD_ARPING_IGNORE_N`
        do
            eval ignore='$HTTPD_ARPING_IGNORE_'$n
            if [ "$ignore" = "$ipaddr" ]
            then
                ignore_entry=yes
            fi
            if [ "$ignore" = "$hname" ]
            then
                ignore_entry=yes
            fi
        done
        if [ "$ignore_entry" = "no" ]
        then
            if [ -n "$ipaddr" -a -n "$ipdev" ]
            then
                echo "${ipaddr} ${ipdev} ${hname}" >> /var/run/arping.ip
            fi
        fi
    done

    # echo 100 > /proc/sys/net/ipv4/neigh/*/locktime
    # echo 60 > /proc/sys/net/ipv4/neigh/*/gc_stale_time

    if [ -f /var/run/arping.ip ]
    then
        log_info "start daemon to check online/offline state of hosts"
        service-restart.sh 5 /usr/local/bin/arping.sh &
    fi

    end_script
fi