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[ "$INTERFACE" != "wan" ] && exit 0
[ -f /proc/net/ipv6_route ] && has_ipv6=1
case $ACTION in
ifup)
pr="`uci get freifunk-policyrouting.pr.enable`"
fallback="`uci get freifunk-policyrouting.pr.fallback`"
# check if ipv6 is enabled:
if [ $pr = "1" ]; then
logger -s -t policyrouting "Starting policy routing on $INTERFACE"
# Setup new tables
tables="/etc/iproute2/rt_tables"
if [ -z "`grep "111" $tables`" ]; then
echo "111 olsr" >> $tables
fi
if [ -z "`grep "112" $tables`" ]; then
echo "112 olsr-default" >> $tables
fi
# Make sure Rt_tables in olsrd are in place
if [ ! "`uci -q get olsrd.@olsrd[0].RtTable`" == "111" ] || [ ! "`uci -q get olsrd.@olsrd[0].RtTableDefault`" == "112" ]; then
uci set olsrd.@olsrd[0].RtTable='111'
uci set olsrd.@olsrd[0].RtTableDefault='112'
uci commit
/etc/init.d/olsrd restart
fi
# Disable dyn_gw and dyngw_plain
dyngwlib=`uci show olsrd |grep dyn_gw.so |awk {' FS="."; print $1"."$2 '}`
if [ -n "$dyngwlib" ]; then
uci set $dyngwlib.ignore=1
uci commit
fi
dyngwplainlib=`uci show olsrd |grep dyn_gw_plain |awk {' FS="."; print $1"."$2 '}`
if [ -n "$dyngwplainlib" ]; then
uci set $dyngwplainlib.ignore=1
uci commit
fi
gw="$(ip r |grep default | cut -d " " -f 3)"
# if no gateway was found stop now
[ -z "$gw" ] && logger -s -t policyrouting "No gateway found" && exit 1
device="`uci -q -p /var/state get network.wan.ifname`"
[ -z "$device" ] && device="`uci -q -p /var/state get network.wan.device`"
[ -z "$device" ] && logger -s -t policyrouting "No device found for wan." && exit 1
test -n "`ip r s t default`" && ip r d default t default
test -n "`ip r s |grep default`" && ip route del default
ip route add default via $gw dev $device table default
if [ "$has_ipv6" = 1 ]; then
local ip6gw=$(ip -6 r |grep default |cut -d " " -f 3)
test -n "`ip -6 r s t default`" && ip -6 r d default t default
if [ -n "`ip -6 r s |grep default`" ]; then
ip -6 route del default
ip -6 r a $ip6gw via $ip6gw dev $dev table default
ip -6 route add default via $ip6gw dev $device table default
fi
fi
ip rule del lookup main
ip rule add fwmark 1 lookup olsr-default
ip rule add lookup main
ip rule add lookup olsr
# Fallback via mesh if no ipv4 gateway is found in default table
[ "$fallback" = 1 ] && ip rule add lookup olsr-default prio 32800
if [ "$has_ipv6" = 1 ]; then
ip -6 rule del lookup main
ip -6 rule add lookup olsr prio 16380
ip -6 rule add lookup main prio 16390
ip -6 rule add fwmark 1 lookup olsr-default prio 16400
ip -6 rule add lookup default prio 16410
[ "$fallback" = 1 ] && ip -6 rule add lookup olsr-default prio 16420
fi
else
# Remove custom routing tables from olsrd
if [ "`uci -q get olsrd.@olsrd[0].RtTable`" == "111" ] || [ "`uci -q get olsrd.@olsrd[0].RtTableDefault`" == "112" ]; then
uci delete olsrd.@olsrd[0].RtTable
uci delete olsrd.@olsrd[0].RtTableDefault
uci commit
/etc/init.d/olsrd restart
fi
fi
;;
ifdown)
logger -s -t policyrouting "Deleting ipv4 policy rules for $INTERFACE"
ip rule del fwmark 1 lookup olsr-default > /dev/null 2>&1
ip rule del lookup olsr-default > /dev/null 2>&1
ip rule del lookup olsr > /dev/null 2>&1
if [ "$has_ipv6" = 1 ]; then
logger -s -t policyrouting "Deleting ipv4 policy rules for $INTERFACE"
ip -6 rule del fwmark 1 lookup olsr-default > /dev/null 2>&1
ip -6 rule del lookup olsr-default > /dev/null 2>&1
ip -6 rule del lookup olsr > /dev/null 2>&1
ip -6 rule del lookup default > /dev/null 2>&1
fi
;;
esac
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