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#!/bin/sh
#
# This is an example of a Mandos client network hook. This hook
# brings up a bridge interface as specified in a separate
# configuration file. To be used, this file and any needed
# configuration file(s) should be copied into the
# /etc/mandos/network-hooks.d directory.
#
# Copyright © 2011 Teddy Hogeborn
# Copyright © 2011 Björn Påhlsson
#
# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved. This file is offered as-is,
# without any warranty.
set -e
CONFIG="$MANDOSNETHOOKDIR/bridge.conf"
addrtoif(){
grep -liFe "$1" /sys/class/net/*/address \
| sed -e 's,.*/\([^/]*\)/[^/]*,\1,'
}
# Read config file, which must set "BRIDGE", "PORT_ADDRESSES", and
# optionally "IPADDRS" and "ROUTES".
if [ -e "$CONFIG" ]; then
. "$CONFIG"
fi
if [ -z "$BRIDGE" -o -z "$PORT_ADDRESSES" ]; then
exit
fi
if [ -n "$DEVICE" -a "$DEVICE" != "$BRIDGE" ]; then
exit
fi
for b in /sbin/brctl /usr/sbin/brctl; do
if [ -e "$b" ]; then
brctl="$b"
break
fi
done
case "$1" in
start)
"$brctl" addbr "$BRIDGE"
for address in $PORT_ADDRESSES; do
interface=`addrtoif "$address"`
"$brctl" addif "$BRIDGE" "$interface"
ip link set dev "$interface" up
done
ip link set dev "$BRIDGE" up
sleep "$DELAY"
if [ -n "$IPADDRS" ]; then
for ipaddr in $IPADDRS; do
ip addr add "$ipaddr" dev "$BRIDGE"
done
fi
if [ -n "$ROUTES" ]; then
for route in $ROUTES; do
ip route add "$route" dev "$BRIDGE"
done
fi
;;
stop)
ip link set dev "$BRIDGE" down
for address in $PORT_ADDRESSES; do
interface=`addrtoif "$address"`
ip link set dev "$interface" down
"$brctl" delif "$BRIDGE" "$interface"
done
"$brctl" delbr "$BRIDGE"
;;
files)
echo /bin/ip
echo "$brctl"
;;
modules)
echo bridge
;;
esac
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