#!/bin/sh

# script configuration
ipup_script=/etc/ppp/ip-up.d/add-routes # заменяешь на что-нибудь своё, хоть на /sbin/routetomsk
ipdown_script=/etc/ppp/ip-down.d/del-routes # заменяешь на что-нибудь своё, хоть на /sbin/unroutetomsk

local_netslist=/etc/ppp/ppp-routes.lst # тоже можно на что-нить поменять, типа /etc/routes.lst
remote_netslist='http://tomsknet.ru/netsplain?nohd=1&pattern=~base~/~mask~%0A'

gateway=78.139.240.1 # сюда забиваешь свой "томский" шлюз
interface=eth0.1 # сюда забиваешь внешний сетевой интерфейс (обычно vlan1 или eth0.1, как у меня, короче смотри ifconfig-ом)

# don't modify anything below this line

removed_routes=0
added_routes=0
netslist_source=${remote_netslist}

if [[ "$1" == "--local" ]] ; then
if [[ -f ${local_netslist} ]] ; then
netslist_source=${local_netslist}
nets_list=$(cat ${local_netslist})
else
logger "ppp-route-update: error: cannot retrieve tomsk network list"
exit 1
fi
else
# retrieve network list to create route to
nets_list=$(wget -q -O - ${remote_netslist} 2>/dev/null)

if [[ -z "${nets_list}" ]] ; then
logger "ppp-route-update: warning: online network list unavailable, trying local list from file '${local_netslist}'"
if [[ -f ${local_netslist} ]] ; then
netslist_source=${local_netslist}
nets_list=$(cat ${local_netslist})
else
logger "ppp-route-update: error: cannot retrieve tomsk network list"
exit 1
fi
fi
fi

# remove old routes if possible
if [[ -x ${ipdown_script} ]] ; then
removed_routes=$(grep 'route' ${ipdown_script} | wc -l)
. ${ipdown_script}
fi

# prepare new scripts for routing setup
echo -e "#!/bin/sh\n" | tee $ipup_script $ipdown_script > /dev/null 2>&1

for network in $nets_list ; do
echo $network | awk -v GW=${gateway} -v IF=${interface} 'FS="/" {print "route add -net "$1" gw "GW" netmask "$2" "IF}' >> ${ipup_script}
echo $network | awk -v GW=${gateway} -v IF=${interface} 'FS="/" {print "route del -net "$1" gw "GW" netmask "$2" "IF}' >> ${ipdown_script}
added_routes=$((added_routes + 1))
done

chmod +x $ipup_script $ipdown_script

# commit added routes
. ${ipup_script}

# report that job well done
logger "ppp-route-update: update complete: $added_routes routes added from '${netslist_source}', $removed_routes obsoleted records removed from routing table"

exit 0