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#!/bin/bash
set -e
die() {
printf '%s\n' "$*"
exit 1
}
do_cleanup() {
local IDX="$1"
local NAME_PREFIX="${2:-net}"
local PEER_PREFIX="${3:-d_}"
local NETNS_PREFIX="${4:-tt}"
logger --id "nm-env-prepare-$IDX" "cleanup start # $@"
pkill -F "/tmp/nm-dnsmasq-$PEER_PREFIX$IDX.pid" dnsmasq &>/dev/null || :
rm -rf "/tmp/nm-dnsmasq-$PEER_PREFIX$IDX.pid"
pkill -F "/tmp/nm-radvd-$PEER_PREFIX$IDX.pid" radvd &>/dev/null || :
rm -rf "/tmp/nm-radvd-$PEER_PREFIX$IDX.pid"
pkill -F "/tmp/nm-pppoe-$PEER_PREFIX$IDX.pid" pppoe-server &>/dev/null || :
rm -rf "/tmp/nm-pppoe-$PEER_PREFIX$IDX.pid"
rm -rf "/tmp/nm-pppoe-allip-$PEER_PREFIX$IDX"
rm -rf "/tmp/nm-radvd-$PEER_PREFIX$IDX.conf"
ip -netns "$NETNS_PREFIX$IDX" link del "$PEER_PREFIX$IDX" &>/dev/null || :
ip netns del "$NETNS_PREFIX$IDX" &>/dev/null || :
logger --id "nm-env-prepare-$IDX" "cleanup complete # $@"
}
do_setup() {
local IDX="$1"
local NAME_PREFIX="${2:-net}"
local PEER_PREFIX="${3:-d_}"
local NETNS_PREFIX="${4:-tt}"
logger --id "nm-env-prepare-$IDX" "setup start # $@"
ip netns add "$NETNS_PREFIX$IDX"
ip -netns "$NETNS_PREFIX$IDX" link set name lo up
ip -netns "$NETNS_PREFIX$IDX" link add "$NAME_PREFIX$IDX" type veth peer "$PEER_PREFIX$IDX"
ip -netns "$NETNS_PREFIX$IDX" link set name "$NAME_PREFIX$IDX" addr aa:0f:f1:ce:00:$(printf '%02x' $IDX)
ip -netns "$NETNS_PREFIX$IDX" link set name "$PEER_PREFIX$IDX" addr cc:0f:f1:ce:00:$(printf '%02x' $IDX)
ip -netns "$NETNS_PREFIX$IDX" link set name "$PEER_PREFIX$IDX" up
ip -netns "$NETNS_PREFIX$IDX" addr add "192.168.$((120 + IDX)).1/23" dev "$PEER_PREFIX$IDX"
ip -netns "$NETNS_PREFIX$IDX" addr add "192:168:$((120 + IDX))::1/64" dev "$PEER_PREFIX$IDX"
# PPPoE inside the rootless container is not actually working, because
# /dev/ppp is not accessible. Still start it, so that we at least can
# test how far it goes...
echo "192.168.$((120 + $IDX)).180-200" > "/tmp/nm-pppoe-allip-$PEER_PREFIX$IDX"
ip netns exec "$NETNS_PREFIX$IDX" \
pppoe-server \
-X "/tmp/nm-pppoe-$PEER_PREFIX$IDX.pid" \
-S isp \
-C isp \
-L "192.168.$((120 + IDX)).1" \
-p "/tmp/nm-pppoe-allip-$PEER_PREFIX$IDX" \
-I "$PEER_PREFIX$IDX" \
&
ip netns exec "$NETNS_PREFIX$IDX" \
dnsmasq \
--conf-file=/dev/null \
--pid-file="/tmp/nm-dnsmasq-$PEER_PREFIX$IDX.pid" \
--no-hosts \
--keep-in-foreground \
--bind-interfaces \
--log-debug \
--log-queries \
--log-dhcp \
--except-interface=lo \
--clear-on-reload \
--listen-address="192.168.$((120 + $IDX)).1" \
--listen-address="192:168:$((120 + IDX))::1" \
--dhcp-range="192.168.$((120 + $IDX)).100,192.168.$((120 + $IDX)).150,2m" \
--dhcp-range="192:168:$((120 + IDX))::1:1000,192:168:$((120 + IDX))::1:2000,64,2m" \
--dhcp-option=option:dns-server,8.8.8.8,8.8.4.4 \
--dhcp-option=option6:dns-server \
--no-ping \
&
cat <<EOF > "/tmp/nm-radvd-$PEER_PREFIX$IDX.conf"
interface $PEER_PREFIX$IDX
{
AdvSendAdvert on;
AdvManagedFlag on;
prefix 192:168:$((120 + IDX))::/64
{
AdvOnLink on;
};
};
EOF
ip netns exec "$NETNS_PREFIX$IDX" \
radvd \
--config "/tmp/nm-radvd-$PEER_PREFIX$IDX.conf" \
--pidfile "/tmp/nm-radvd-$PEER_PREFIX$IDX.pid" \
--logmethod syslog \
-d 5 \
&
ip -netns ""$NETNS_PREFIX$IDX"" link set name "$NAME_PREFIX$IDX" netns $$
logger --id "nm-env-prepare-$IDX" "setup complete: netns=$NETNS_PREFIX$IDX, iface=$NAME_PREFIX$IDX, peer=$PEER_PREFIX$IDX # $@"
}
do_redo() {
do_cleanup "$@"
do_setup "$@"
}
###############################################################################
IDX=1
NAME_PREFIX=net
PEER_PREFIX=
CMD=redo
for (( i=1 ; i<="$#" ; )) ; do
c="${@:$i:1}"
i=$((i+1))
case "$c" in
redo|setup|cleanup)
CMD="$c"
;;
--prefix|-p)
NAME_PREFIX="${@:$i:1}"
test -n "$NAME_PREFIX" || die "missing argument to --prefix"
i=$((i+1))
;;
--peer-prefix)
PEER_PREFIX="${@:$i:1}"
test -n "$PEER_PREFIX" || die "missing argument to --peer-prefix"
i=$((i+1))
;;
--idx|-i)
test $i -le "$#" || die "missing argument to --idx"
IDX="${@:$i:1}"
i=$((i+1))
;;
*)
die "invalid argument"
;;
esac
done
if [ -z "$PEER_PREFIX" ]; then
if [ "$NAME_PREFIX" = net ]; then
PEER_PREFIX=d_
else
PEER_PREFIX="d_${NAME_PREFIX}_"
fi
fi
do_$CMD "$IDX" "$NAME_PREFIX" "$PEER_PREFIX"
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