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#!/bin/sh
. /lib/functions.sh
. /lib/functions/network.sh
proto="4"
[ -f /proc/net/ipv6_route ] && proto="4 6"
config_load freifunk-policyrouting
config_get enable pr enable
config_get fallback pr fallback
config_get strict pr strict
config_get zones pr zones
if [ "$ACTION" = "ifup" ] && [ "$enable" = "1" ]; then
network_get_subnet net $INTERFACE
network_get_subnet6 net6 $INTERFACE
network_get_physdev dev $INTERFACE
if [ "$net" != "" -a -n "$dev" ]; then
eval $(/bin/ipcalc.sh $net)
if [ "$PREFIX" != "0" -a "$NETWORK" != "127.0.0.0" ]; then
if [ ! "$(ip r s t localnets |grep "$NETWORK/$PREFIX dev")" ]; then
cmd="ip r a $NETWORK/$PREFIX dev $dev table localnets"
$cmd
if [ "$?" = 0 ]; then
logger -s -t policyrouting "Add route: $cmd"
else
logger -s -t policyrouting "Error! Could not add route: $cmd"
fi
fi
fi
if [ -n "$net6" ]; then
cmd="ip -6 r a $net6 dev $dev table localnets"
$cmd 2>&1 > /dev/null
if [ "$?" = 0 ]; then
logger -s -t policyrouting "Add route: $cmd (IPv6)"
fi
fi
networks=""
for z in $zones; do
network_zone="$(uci -q get firewall.zone_${z}.network)"
if [ -z "$network_zone" ]; then
network_zone="$z"
fi
networks="$networks $network_zone"
done
for n in $networks; do
if [ "$INTERFACE" = "$n" ]; then
for p in $proto; do
if [ ! "$(ip -$p ru s | grep "from all iif $dev lookup olsr-default")" ]; then
ip -$p rule add dev "$dev" lookup olsr-default prio 20000
if [ "$strict" != 0 ]; then
ip -$p rule add dev "$dev" unreachable prio 20001
fi
if [ "$?" = 0 ]; then
logger -s -t policyrouting "Use mesh gateway for interface $dev (IPv$p)"
if [ -z "$(uci -P /var/state get freifunk-policyrouting.${INTERFACE})" ]; then
uci -P /var/state set freifunk-policyrouting.${INTERFACE}="state"
fi
uci -P /var/state set freifunk-policyrouting.${INTERFACE}.device="$dev"
else
logger -s -t policyrouting "Error: Could not add rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
fi
fi
done
fi
done
fi
fi
if [ "$ACTION" = "ifdown" ]; then
dev="$(uci -q -P /var/state get freifunk-policyrouting.${INTERFACE}.device)"
if [ -n "$dev" ]; then
networks=""
for z in $zones; do
network_zone="$(uci -q get firewall.zone_${z}.network)"
if [ -z "$network_zone" ]; then
network_zone="$z"
fi
networks="$networks $network_zone"
done
for n in $networks; do
if [ "$INTERFACE" = "$n" ]; then
for p in $proto; do
if [ "$(ip -$p ru s | grep "from all iif $dev lookup olsr-default")" ]; then
ip -$p rule del dev "$dev" lookup olsr-default prio 20000
ip -$p rule del dev "$dev" unreachable prio 20001
if [ "$?" = 0 ]; then
logger -s -t policyrouting "Remove rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
else
logger -s -t policyrouting "Error! Could not remove rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
fi
fi
done
fi
done
fi
fi
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