697 lines
30 KiB
Bash
697 lines
30 KiB
Bash
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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#
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# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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#
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# This script tests the below topology:
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#
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# ┌─────────────────────┐ ┌──────────────────────────────────┐ ┌─────────────────────┐
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# │ $ns1 namespace │ │ $ns0 namespace │ │ $ns2 namespace │
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# │ │ │ │ │ │
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# │┌────────┐ │ │ ┌────────┐ │ │ ┌────────┐│
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# ││ wg0 │───────────┼───┼────────────│ lo │────────────┼───┼───────────│ wg0 ││
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# │├────────┴──────────┐│ │ ┌───────┴────────┴────────┐ │ │┌──────────┴────────┤│
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# ││192.168.241.1/24 ││ │ │(ns1) (ns2) │ │ ││192.168.241.2/24 ││
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# ││fd00::1/24 ││ │ │127.0.0.1:1 127.0.0.1:2│ │ ││fd00::2/24 ││
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# │└───────────────────┘│ │ │[::]:1 [::]:2 │ │ │└───────────────────┘│
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# └─────────────────────┘ │ └─────────────────────────┘ │ └─────────────────────┘
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# └──────────────────────────────────┘
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#
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# After the topology is prepared we run a series of TCP/UDP iperf3 tests between the
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# wireguard peers in $ns1 and $ns2. Note that $ns0 is the endpoint for the wg0
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# interfaces in $ns1 and $ns2. See https://www.wireguard.com/netns/ for further
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# details on how this is accomplished.
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set -e
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shopt -s extglob
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exec 3>&1
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export LANG=C
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export WG_HIDE_KEYS=never
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NPROC=( /sys/devices/system/cpu/cpu+([0-9]) ); NPROC=${#NPROC[@]}
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netns0="wg-test-$$-0"
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netns1="wg-test-$$-1"
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netns2="wg-test-$$-2"
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pretty() { echo -e "\x1b[32m\x1b[1m[+] ${1:+NS$1: }${2}\x1b[0m" >&3; }
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pp() { pretty "" "$*"; "$@"; }
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maybe_exec() { if [[ $BASHPID -eq $$ ]]; then "$@"; else exec "$@"; fi; }
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n0() { pretty 0 "$*"; maybe_exec ip netns exec $netns0 "$@"; }
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n1() { pretty 1 "$*"; maybe_exec ip netns exec $netns1 "$@"; }
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n2() { pretty 2 "$*"; maybe_exec ip netns exec $netns2 "$@"; }
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ip0() { pretty 0 "ip $*"; ip -n $netns0 "$@"; }
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ip1() { pretty 1 "ip $*"; ip -n $netns1 "$@"; }
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ip2() { pretty 2 "ip $*"; ip -n $netns2 "$@"; }
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sleep() { read -t "$1" -N 1 || true; }
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waitiperf() { pretty "${1//*-}" "wait for iperf:${3:-5201} pid $2"; while [[ $(ss -N "$1" -tlpH "sport = ${3:-5201}") != *\"iperf3\",pid=$2,fd=* ]]; do sleep 0.1; done; }
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waitncatudp() { pretty "${1//*-}" "wait for udp:1111 pid $2"; while [[ $(ss -N "$1" -ulpH 'sport = 1111') != *\"ncat\",pid=$2,fd=* ]]; do sleep 0.1; done; }
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waitiface() { pretty "${1//*-}" "wait for $2 to come up"; ip netns exec "$1" bash -c "while [[ \$(< \"/sys/class/net/$2/operstate\") != up ]]; do read -t .1 -N 0 || true; done;"; }
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cleanup() {
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set +e
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exec 2>/dev/null
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printf "$orig_message_cost" > /proc/sys/net/core/message_cost
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ip0 link del dev wg0
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ip0 link del dev wg1
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ip1 link del dev wg0
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ip1 link del dev wg1
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ip2 link del dev wg0
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ip2 link del dev wg1
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local to_kill="$(ip netns pids $netns0) $(ip netns pids $netns1) $(ip netns pids $netns2)"
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[[ -n $to_kill ]] && kill $to_kill
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pp ip netns del $netns1
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pp ip netns del $netns2
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pp ip netns del $netns0
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exit
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}
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orig_message_cost="$(< /proc/sys/net/core/message_cost)"
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trap cleanup EXIT
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printf 0 > /proc/sys/net/core/message_cost
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ip netns del $netns0 2>/dev/null || true
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ip netns del $netns1 2>/dev/null || true
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ip netns del $netns2 2>/dev/null || true
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pp ip netns add $netns0
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pp ip netns add $netns1
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pp ip netns add $netns2
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ip0 link set up dev lo
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ip0 link add dev wg0 type wireguard
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ip0 link set wg0 netns $netns1
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ip0 link add dev wg0 type wireguard
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ip0 link set wg0 netns $netns2
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key1="$(pp wg genkey)"
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key2="$(pp wg genkey)"
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key3="$(pp wg genkey)"
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key4="$(pp wg genkey)"
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pub1="$(pp wg pubkey <<<"$key1")"
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pub2="$(pp wg pubkey <<<"$key2")"
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pub3="$(pp wg pubkey <<<"$key3")"
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pub4="$(pp wg pubkey <<<"$key4")"
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psk="$(pp wg genpsk)"
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[[ -n $key1 && -n $key2 && -n $psk ]]
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configure_peers() {
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ip1 addr add 192.168.241.1/24 dev wg0
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ip1 addr add fd00::1/112 dev wg0
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ip2 addr add 192.168.241.2/24 dev wg0
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ip2 addr add fd00::2/112 dev wg0
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n1 wg set wg0 \
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private-key <(echo "$key1") \
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listen-port 1 \
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peer "$pub2" \
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preshared-key <(echo "$psk") \
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allowed-ips 192.168.241.2/32,fd00::2/128
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n2 wg set wg0 \
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private-key <(echo "$key2") \
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listen-port 2 \
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peer "$pub1" \
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preshared-key <(echo "$psk") \
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allowed-ips 192.168.241.1/32,fd00::1/128
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ip1 link set up dev wg0
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ip2 link set up dev wg0
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}
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configure_peers
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tests() {
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# Ping over IPv4
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n2 ping -c 10 -f -W 1 192.168.241.1
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n1 ping -c 10 -f -W 1 192.168.241.2
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# Ping over IPv6
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n2 ping6 -c 10 -f -W 1 fd00::1
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n1 ping6 -c 10 -f -W 1 fd00::2
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# TCP over IPv4
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n2 iperf3 -s -1 -B 192.168.241.2 &
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waitiperf $netns2 $!
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n1 iperf3 -Z -t 3 -c 192.168.241.2
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# TCP over IPv6
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n1 iperf3 -s -1 -B fd00::1 &
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waitiperf $netns1 $!
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n2 iperf3 -Z -t 3 -c fd00::1
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# UDP over IPv4
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n1 iperf3 -s -1 -B 192.168.241.1 &
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waitiperf $netns1 $!
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n2 iperf3 -Z -t 3 -b 0 -u -c 192.168.241.1
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# UDP over IPv6
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n2 iperf3 -s -1 -B fd00::2 &
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waitiperf $netns2 $!
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n1 iperf3 -Z -t 3 -b 0 -u -c fd00::2
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# TCP over IPv4, in parallel
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local pids=( ) i
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for ((i=0; i < NPROC; ++i)) do
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n2 iperf3 -p $(( 5200 + i )) -s -1 -B 192.168.241.2 &
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pids+=( $! ); waitiperf $netns2 $! $(( 5200 + i ))
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done
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for ((i=0; i < NPROC; ++i)) do
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n1 iperf3 -Z -t 3 -p $(( 5200 + i )) -c 192.168.241.2 &
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done
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wait "${pids[@]}"
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}
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[[ $(ip1 link show dev wg0) =~ mtu\ ([0-9]+) ]] && orig_mtu="${BASH_REMATCH[1]}"
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big_mtu=$(( 34816 - 1500 + $orig_mtu ))
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# Test using IPv4 as outer transport
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n1 wg set wg0 peer "$pub2" endpoint 127.0.0.1:2
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n2 wg set wg0 peer "$pub1" endpoint 127.0.0.1:1
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# Before calling tests, we first make sure that the stats counters and timestamper are working
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n2 ping -c 10 -f -W 1 192.168.241.1
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{ read _; read _; read _; read rx_bytes _; read _; read tx_bytes _; } < <(ip2 -stats link show dev wg0)
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(( rx_bytes == 1372 && (tx_bytes == 1428 || tx_bytes == 1460) ))
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{ read _; read _; read _; read rx_bytes _; read _; read tx_bytes _; } < <(ip1 -stats link show dev wg0)
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(( tx_bytes == 1372 && (rx_bytes == 1428 || rx_bytes == 1460) ))
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read _ rx_bytes tx_bytes < <(n2 wg show wg0 transfer)
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(( rx_bytes == 1372 && (tx_bytes == 1428 || tx_bytes == 1460) ))
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read _ rx_bytes tx_bytes < <(n1 wg show wg0 transfer)
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(( tx_bytes == 1372 && (rx_bytes == 1428 || rx_bytes == 1460) ))
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read _ timestamp < <(n1 wg show wg0 latest-handshakes)
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(( timestamp != 0 ))
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tests
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ip1 link set wg0 mtu $big_mtu
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ip2 link set wg0 mtu $big_mtu
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tests
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ip1 link set wg0 mtu $orig_mtu
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ip2 link set wg0 mtu $orig_mtu
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# Test using IPv6 as outer transport
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n1 wg set wg0 peer "$pub2" endpoint [::1]:2
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n2 wg set wg0 peer "$pub1" endpoint [::1]:1
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tests
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ip1 link set wg0 mtu $big_mtu
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ip2 link set wg0 mtu $big_mtu
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tests
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# Test that route MTUs work with the padding
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ip1 link set wg0 mtu 1300
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ip2 link set wg0 mtu 1300
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n1 wg set wg0 peer "$pub2" endpoint 127.0.0.1:2
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n2 wg set wg0 peer "$pub1" endpoint 127.0.0.1:1
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n0 iptables -A INPUT -m length --length 1360 -j DROP
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n1 ip route add 192.168.241.2/32 dev wg0 mtu 1299
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n2 ip route add 192.168.241.1/32 dev wg0 mtu 1299
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n2 ping -c 1 -W 1 -s 1269 192.168.241.1
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n2 ip route delete 192.168.241.1/32 dev wg0 mtu 1299
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n1 ip route delete 192.168.241.2/32 dev wg0 mtu 1299
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n0 iptables -F INPUT
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ip1 link set wg0 mtu $orig_mtu
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ip2 link set wg0 mtu $orig_mtu
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# Test using IPv4 that roaming works
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ip0 -4 addr del 127.0.0.1/8 dev lo
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ip0 -4 addr add 127.212.121.99/8 dev lo
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n1 wg set wg0 listen-port 9999
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n1 wg set wg0 peer "$pub2" endpoint 127.0.0.1:2
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n1 ping6 -W 1 -c 1 fd00::2
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[[ $(n2 wg show wg0 endpoints) == "$pub1 127.212.121.99:9999" ]]
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# Test using IPv6 that roaming works
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n1 wg set wg0 listen-port 9998
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n1 wg set wg0 peer "$pub2" endpoint [::1]:2
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n1 ping -W 1 -c 1 192.168.241.2
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[[ $(n2 wg show wg0 endpoints) == "$pub1 [::1]:9998" ]]
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# Test that crypto-RP filter works
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n1 wg set wg0 peer "$pub2" allowed-ips 192.168.241.0/24
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exec 4< <(n1 ncat -l -u -p 1111)
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ncat_pid=$!
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waitncatudp $netns1 $ncat_pid
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n2 ncat -u 192.168.241.1 1111 <<<"X"
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read -r -N 1 -t 1 out <&4 && [[ $out == "X" ]]
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kill $ncat_pid
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more_specific_key="$(pp wg genkey | pp wg pubkey)"
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n1 wg set wg0 peer "$more_specific_key" allowed-ips 192.168.241.2/32
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n2 wg set wg0 listen-port 9997
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exec 4< <(n1 ncat -l -u -p 1111)
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ncat_pid=$!
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waitncatudp $netns1 $ncat_pid
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n2 ncat -u 192.168.241.1 1111 <<<"X"
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! read -r -N 1 -t 1 out <&4 || false
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kill $ncat_pid
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n1 wg set wg0 peer "$more_specific_key" remove
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[[ $(n1 wg show wg0 endpoints) == "$pub2 [::1]:9997" ]]
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# Test that we can change private keys keys and immediately handshake
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n1 wg set wg0 private-key <(echo "$key1") peer "$pub2" preshared-key <(echo "$psk") allowed-ips 192.168.241.2/32 endpoint 127.0.0.1:2
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n2 wg set wg0 private-key <(echo "$key2") listen-port 2 peer "$pub1" preshared-key <(echo "$psk") allowed-ips 192.168.241.1/32
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n1 ping -W 1 -c 1 192.168.241.2
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n1 wg set wg0 private-key <(echo "$key3")
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n2 wg set wg0 peer "$pub3" preshared-key <(echo "$psk") allowed-ips 192.168.241.1/32 peer "$pub1" remove
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n1 ping -W 1 -c 1 192.168.241.2
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n2 wg set wg0 peer "$pub3" remove
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# Test that we can route wg through wg
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ip1 addr flush dev wg0
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ip2 addr flush dev wg0
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ip1 addr add fd00::5:1/112 dev wg0
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ip2 addr add fd00::5:2/112 dev wg0
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n1 wg set wg0 private-key <(echo "$key1") peer "$pub2" preshared-key <(echo "$psk") allowed-ips fd00::5:2/128 endpoint 127.0.0.1:2
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n2 wg set wg0 private-key <(echo "$key2") listen-port 2 peer "$pub1" preshared-key <(echo "$psk") allowed-ips fd00::5:1/128 endpoint 127.212.121.99:9998
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ip1 link add wg1 type wireguard
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ip2 link add wg1 type wireguard
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ip1 addr add 192.168.241.1/24 dev wg1
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ip1 addr add fd00::1/112 dev wg1
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ip2 addr add 192.168.241.2/24 dev wg1
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ip2 addr add fd00::2/112 dev wg1
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ip1 link set mtu 1340 up dev wg1
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ip2 link set mtu 1340 up dev wg1
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n1 wg set wg1 listen-port 5 private-key <(echo "$key3") peer "$pub4" allowed-ips 192.168.241.2/32,fd00::2/128 endpoint [fd00::5:2]:5
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n2 wg set wg1 listen-port 5 private-key <(echo "$key4") peer "$pub3" allowed-ips 192.168.241.1/32,fd00::1/128 endpoint [fd00::5:1]:5
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tests
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# Try to set up a routing loop between the two namespaces
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ip1 link set netns $netns0 dev wg1
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ip0 addr add 192.168.241.1/24 dev wg1
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ip0 link set up dev wg1
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n0 ping -W 1 -c 1 192.168.241.2
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n1 wg set wg0 peer "$pub2" endpoint 192.168.241.2:7
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ip2 link del wg0
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ip2 link del wg1
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read _ _ tx_bytes_before < <(n0 wg show wg1 transfer)
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! n0 ping -W 1 -c 10 -f 192.168.241.2 || false
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sleep 1
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read _ _ tx_bytes_after < <(n0 wg show wg1 transfer)
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if ! (( tx_bytes_after - tx_bytes_before < 70000 )); then
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errstart=$'\x1b[37m\x1b[41m\x1b[1m'
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errend=$'\x1b[0m'
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echo "${errstart} ${errend}"
|
||
|
|
echo "${errstart} E R R O R ${errend}"
|
||
|
|
echo "${errstart} ${errend}"
|
||
|
|
echo "${errstart} This architecture does not do the right thing ${errend}"
|
||
|
|
echo "${errstart} with cross-namespace routing loops. This test ${errend}"
|
||
|
|
echo "${errstart} has thus technically failed but, as this issue ${errend}"
|
||
|
|
echo "${errstart} is as yet unsolved, these tests will continue ${errend}"
|
||
|
|
echo "${errstart} onward. :( ${errend}"
|
||
|
|
echo "${errstart} ${errend}"
|
||
|
|
fi
|
||
|
|
|
||
|
|
ip0 link del wg1
|
||
|
|
ip1 link del wg0
|
||
|
|
|
||
|
|
# Test using NAT. We now change the topology to this:
|
||
|
|
# ┌────────────────────────────────────────┐ ┌────────────────────────────────────────────────┐ ┌────────────────────────────────────────┐
|
||
|
|
# │ $ns1 namespace │ │ $ns0 namespace │ │ $ns2 namespace │
|
||
|
|
# │ │ │ │ │ │
|
||
|
|
# │ ┌─────┐ ┌─────┐ │ │ ┌──────┐ ┌──────┐ │ │ ┌─────┐ ┌─────┐ │
|
||
|
|
# │ │ wg0 │─────────────│vethc│───────────┼────┼────│vethrc│ │vethrs│──────────────┼─────┼──│veths│────────────│ wg0 │ │
|
||
|
|
# │ ├─────┴──────────┐ ├─────┴──────────┐│ │ ├──────┴─────────┐ ├──────┴────────────┐ │ │ ├─────┴──────────┐ ├─────┴──────────┐ │
|
||
|
|
# │ │192.168.241.1/24│ │192.168.1.100/24││ │ │192.168.1.1/24 │ │10.0.0.1/24 │ │ │ │10.0.0.100/24 │ │192.168.241.2/24│ │
|
||
|
|
# │ │fd00::1/24 │ │ ││ │ │ │ │SNAT:192.168.1.0/24│ │ │ │ │ │fd00::2/24 │ │
|
||
|
|
# │ └────────────────┘ └────────────────┘│ │ └────────────────┘ └───────────────────┘ │ │ └────────────────┘ └────────────────┘ │
|
||
|
|
# └────────────────────────────────────────┘ └────────────────────────────────────────────────┘ └────────────────────────────────────────┘
|
||
|
|
|
||
|
|
ip1 link add dev wg0 type wireguard
|
||
|
|
ip2 link add dev wg0 type wireguard
|
||
|
|
configure_peers
|
||
|
|
|
||
|
|
ip0 link add vethrc type veth peer name vethc
|
||
|
|
ip0 link add vethrs type veth peer name veths
|
||
|
|
ip0 link set vethc netns $netns1
|
||
|
|
ip0 link set veths netns $netns2
|
||
|
|
ip0 link set vethrc up
|
||
|
|
ip0 link set vethrs up
|
||
|
|
ip0 addr add 192.168.1.1/24 dev vethrc
|
||
|
|
ip0 addr add 10.0.0.1/24 dev vethrs
|
||
|
|
ip1 addr add 192.168.1.100/24 dev vethc
|
||
|
|
ip1 link set vethc up
|
||
|
|
ip1 route add default via 192.168.1.1
|
||
|
|
ip2 addr add 10.0.0.100/24 dev veths
|
||
|
|
ip2 link set veths up
|
||
|
|
waitiface $netns0 vethrc
|
||
|
|
waitiface $netns0 vethrs
|
||
|
|
waitiface $netns1 vethc
|
||
|
|
waitiface $netns2 veths
|
||
|
|
|
||
|
|
n0 bash -c 'printf 1 > /proc/sys/net/ipv4/ip_forward'
|
||
|
|
n0 bash -c 'printf 2 > /proc/sys/net/netfilter/nf_conntrack_udp_timeout'
|
||
|
|
n0 bash -c 'printf 2 > /proc/sys/net/netfilter/nf_conntrack_udp_timeout_stream'
|
||
|
|
n0 iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -d 10.0.0.0/24 -j SNAT --to 10.0.0.1
|
||
|
|
|
||
|
|
n1 wg set wg0 peer "$pub2" endpoint 10.0.0.100:2 persistent-keepalive 1
|
||
|
|
n1 ping -W 1 -c 1 192.168.241.2
|
||
|
|
n2 ping -W 1 -c 1 192.168.241.1
|
||
|
|
[[ $(n2 wg show wg0 endpoints) == "$pub1 10.0.0.1:1" ]]
|
||
|
|
# Demonstrate n2 can still send packets to n1, since persistent-keepalive will prevent connection tracking entry from expiring (to see entries: `n0 conntrack -L`).
|
||
|
|
pp sleep 3
|
||
|
|
n2 ping -W 1 -c 1 192.168.241.1
|
||
|
|
n1 wg set wg0 peer "$pub2" persistent-keepalive 0
|
||
|
|
|
||
|
|
# Test that sk_bound_dev_if works
|
||
|
|
n1 ping -I wg0 -c 1 -W 1 192.168.241.2
|
||
|
|
# What about when the mark changes and the packet must be rerouted?
|
||
|
|
n1 iptables -t mangle -I OUTPUT -j MARK --set-xmark 1
|
||
|
|
n1 ping -c 1 -W 1 192.168.241.2 # First the boring case
|
||
|
|
n1 ping -I wg0 -c 1 -W 1 192.168.241.2 # Then the sk_bound_dev_if case
|
||
|
|
n1 iptables -t mangle -D OUTPUT -j MARK --set-xmark 1
|
||
|
|
|
||
|
|
# Test that onion routing works, even when it loops
|
||
|
|
n1 wg set wg0 peer "$pub3" allowed-ips 192.168.242.2/32 endpoint 192.168.241.2:5
|
||
|
|
ip1 addr add 192.168.242.1/24 dev wg0
|
||
|
|
ip2 link add wg1 type wireguard
|
||
|
|
ip2 addr add 192.168.242.2/24 dev wg1
|
||
|
|
n2 wg set wg1 private-key <(echo "$key3") listen-port 5 peer "$pub1" allowed-ips 192.168.242.1/32
|
||
|
|
ip2 link set wg1 up
|
||
|
|
n1 ping -W 1 -c 1 192.168.242.2
|
||
|
|
ip2 link del wg1
|
||
|
|
n1 wg set wg0 peer "$pub3" endpoint 192.168.242.2:5
|
||
|
|
! n1 ping -W 1 -c 1 192.168.242.2 || false # Should not crash kernel
|
||
|
|
n1 wg set wg0 peer "$pub3" remove
|
||
|
|
ip1 addr del 192.168.242.1/24 dev wg0
|
||
|
|
|
||
|
|
# Do a wg-quick(8)-style policy routing for the default route, making sure vethc has a v6 address to tease out bugs.
|
||
|
|
ip1 -6 addr add fc00::9/96 dev vethc
|
||
|
|
ip1 -6 route add default via fc00::1
|
||
|
|
ip2 -4 addr add 192.168.99.7/32 dev wg0
|
||
|
|
ip2 -6 addr add abab::1111/128 dev wg0
|
||
|
|
n1 wg set wg0 fwmark 51820 peer "$pub2" allowed-ips 192.168.99.7,abab::1111
|
||
|
|
ip1 -6 route add default dev wg0 table 51820
|
||
|
|
ip1 -6 rule add not fwmark 51820 table 51820
|
||
|
|
ip1 -6 rule add table main suppress_prefixlength 0
|
||
|
|
ip1 -4 route add default dev wg0 table 51820
|
||
|
|
ip1 -4 rule add not fwmark 51820 table 51820
|
||
|
|
ip1 -4 rule add table main suppress_prefixlength 0
|
||
|
|
n1 bash -c 'printf 0 > /proc/sys/net/ipv4/conf/vethc/rp_filter'
|
||
|
|
# Flood the pings instead of sending just one, to trigger routing table reference counting bugs.
|
||
|
|
n1 ping -W 1 -c 100 -f 192.168.99.7
|
||
|
|
n1 ping -W 1 -c 100 -f abab::1111
|
||
|
|
|
||
|
|
# Have ns2 NAT into wg0 packets from ns0, but return an icmp error along the right route.
|
||
|
|
n2 iptables -t nat -A POSTROUTING -s 10.0.0.0/24 -d 192.168.241.0/24 -j SNAT --to 192.168.241.2
|
||
|
|
n0 iptables -t filter -A INPUT \! -s 10.0.0.0/24 -i vethrs -j DROP # Manual rpfilter just to be explicit.
|
||
|
|
n2 bash -c 'printf 1 > /proc/sys/net/ipv4/ip_forward'
|
||
|
|
ip0 -4 route add 192.168.241.1 via 10.0.0.100
|
||
|
|
n2 wg set wg0 peer "$pub1" remove
|
||
|
|
[[ $(! n0 ping -W 1 -c 1 192.168.241.1 || false) == *"From 10.0.0.100 icmp_seq=1 Destination Host Unreachable"* ]]
|
||
|
|
|
||
|
|
n0 iptables -t nat -F
|
||
|
|
n0 iptables -t filter -F
|
||
|
|
n2 iptables -t nat -F
|
||
|
|
ip0 link del vethrc
|
||
|
|
ip0 link del vethrs
|
||
|
|
ip1 link del wg0
|
||
|
|
ip2 link del wg0
|
||
|
|
|
||
|
|
# Test that saddr routing is sticky but not too sticky, changing to this topology:
|
||
|
|
# ┌────────────────────────────────────────┐ ┌────────────────────────────────────────┐
|
||
|
|
# │ $ns1 namespace │ │ $ns2 namespace │
|
||
|
|
# │ │ │ │
|
||
|
|
# │ ┌─────┐ ┌─────┐ │ │ ┌─────┐ ┌─────┐ │
|
||
|
|
# │ │ wg0 │─────────────│veth1│───────────┼────┼──│veth2│────────────│ wg0 │ │
|
||
|
|
# │ ├─────┴──────────┐ ├─────┴──────────┐│ │ ├─────┴──────────┐ ├─────┴──────────┐ │
|
||
|
|
# │ │192.168.241.1/24│ │10.0.0.1/24 ││ │ │10.0.0.2/24 │ │192.168.241.2/24│ │
|
||
|
|
# │ │fd00::1/24 │ │fd00:aa::1/96 ││ │ │fd00:aa::2/96 │ │fd00::2/24 │ │
|
||
|
|
# │ └────────────────┘ └────────────────┘│ │ └────────────────┘ └────────────────┘ │
|
||
|
|
# └────────────────────────────────────────┘ └────────────────────────────────────────┘
|
||
|
|
|
||
|
|
ip1 link add dev wg0 type wireguard
|
||
|
|
ip2 link add dev wg0 type wireguard
|
||
|
|
configure_peers
|
||
|
|
ip1 link add veth1 type veth peer name veth2
|
||
|
|
ip1 link set veth2 netns $netns2
|
||
|
|
n1 bash -c 'printf 0 > /proc/sys/net/ipv6/conf/all/accept_dad'
|
||
|
|
n2 bash -c 'printf 0 > /proc/sys/net/ipv6/conf/all/accept_dad'
|
||
|
|
n1 bash -c 'printf 0 > /proc/sys/net/ipv6/conf/veth1/accept_dad'
|
||
|
|
n2 bash -c 'printf 0 > /proc/sys/net/ipv6/conf/veth2/accept_dad'
|
||
|
|
n1 bash -c 'printf 1 > /proc/sys/net/ipv4/conf/veth1/promote_secondaries'
|
||
|
|
|
||
|
|
# First we check that we aren't overly sticky and can fall over to new IPs when old ones are removed
|
||
|
|
ip1 addr add 10.0.0.1/24 dev veth1
|
||
|
|
ip1 addr add fd00:aa::1/96 dev veth1
|
||
|
|
ip2 addr add 10.0.0.2/24 dev veth2
|
||
|
|
ip2 addr add fd00:aa::2/96 dev veth2
|
||
|
|
ip1 link set veth1 up
|
||
|
|
ip2 link set veth2 up
|
||
|
|
waitiface $netns1 veth1
|
||
|
|
waitiface $netns2 veth2
|
||
|
|
n1 wg set wg0 peer "$pub2" endpoint 10.0.0.2:2
|
||
|
|
n1 ping -W 1 -c 1 192.168.241.2
|
||
|
|
ip1 addr add 10.0.0.10/24 dev veth1
|
||
|
|
ip1 addr del 10.0.0.1/24 dev veth1
|
||
|
|
n1 ping -W 1 -c 1 192.168.241.2
|
||
|
|
n1 wg set wg0 peer "$pub2" endpoint [fd00:aa::2]:2
|
||
|
|
n1 ping -W 1 -c 1 192.168.241.2
|
||
|
|
ip1 addr add fd00:aa::10/96 dev veth1
|
||
|
|
ip1 addr del fd00:aa::1/96 dev veth1
|
||
|
|
n1 ping -W 1 -c 1 192.168.241.2
|
||
|
|
|
||
|
|
# Now we show that we can successfully do reply to sender routing
|
||
|
|
ip1 link set veth1 down
|
||
|
|
ip2 link set veth2 down
|
||
|
|
ip1 addr flush dev veth1
|
||
|
|
ip2 addr flush dev veth2
|
||
|
|
ip1 addr add 10.0.0.1/24 dev veth1
|
||
|
|
ip1 addr add 10.0.0.2/24 dev veth1
|
||
|
|
ip1 addr add fd00:aa::1/96 dev veth1
|
||
|
|
ip1 addr add fd00:aa::2/96 dev veth1
|
||
|
|
ip2 addr add 10.0.0.3/24 dev veth2
|
||
|
|
ip2 addr add fd00:aa::3/96 dev veth2
|
||
|
|
ip1 link set veth1 up
|
||
|
|
ip2 link set veth2 up
|
||
|
|
waitiface $netns1 veth1
|
||
|
|
waitiface $netns2 veth2
|
||
|
|
n2 wg set wg0 peer "$pub1" endpoint 10.0.0.1:1
|
||
|
|
n2 ping -W 1 -c 1 192.168.241.1
|
||
|
|
[[ $(n2 wg show wg0 endpoints) == "$pub1 10.0.0.1:1" ]]
|
||
|
|
n2 wg set wg0 peer "$pub1" endpoint [fd00:aa::1]:1
|
||
|
|
n2 ping -W 1 -c 1 192.168.241.1
|
||
|
|
[[ $(n2 wg show wg0 endpoints) == "$pub1 [fd00:aa::1]:1" ]]
|
||
|
|
n2 wg set wg0 peer "$pub1" endpoint 10.0.0.2:1
|
||
|
|
n2 ping -W 1 -c 1 192.168.241.1
|
||
|
|
[[ $(n2 wg show wg0 endpoints) == "$pub1 10.0.0.2:1" ]]
|
||
|
|
n2 wg set wg0 peer "$pub1" endpoint [fd00:aa::2]:1
|
||
|
|
n2 ping -W 1 -c 1 192.168.241.1
|
||
|
|
[[ $(n2 wg show wg0 endpoints) == "$pub1 [fd00:aa::2]:1" ]]
|
||
|
|
|
||
|
|
# What happens if the inbound destination address belongs to a different interface as the default route?
|
||
|
|
ip1 link add dummy0 type dummy
|
||
|
|
ip1 addr add 10.50.0.1/24 dev dummy0
|
||
|
|
ip1 link set dummy0 up
|
||
|
|
ip2 route add 10.50.0.0/24 dev veth2
|
||
|
|
n2 wg set wg0 peer "$pub1" endpoint 10.50.0.1:1
|
||
|
|
n2 ping -W 1 -c 1 192.168.241.1
|
||
|
|
[[ $(n2 wg show wg0 endpoints) == "$pub1 10.50.0.1:1" ]]
|
||
|
|
|
||
|
|
ip1 link del dummy0
|
||
|
|
ip1 addr flush dev veth1
|
||
|
|
ip2 addr flush dev veth2
|
||
|
|
ip1 route flush dev veth1
|
||
|
|
ip2 route flush dev veth2
|
||
|
|
|
||
|
|
# Now we see what happens if another interface route takes precedence over an ongoing one
|
||
|
|
ip1 link add veth3 type veth peer name veth4
|
||
|
|
ip1 link set veth4 netns $netns2
|
||
|
|
ip1 addr add 10.0.0.1/24 dev veth1
|
||
|
|
ip2 addr add 10.0.0.2/24 dev veth2
|
||
|
|
ip1 addr add 10.0.0.3/24 dev veth3
|
||
|
|
ip1 link set veth1 up
|
||
|
|
ip2 link set veth2 up
|
||
|
|
ip1 link set veth3 up
|
||
|
|
ip2 link set veth4 up
|
||
|
|
waitiface $netns1 veth1
|
||
|
|
waitiface $netns2 veth2
|
||
|
|
waitiface $netns1 veth3
|
||
|
|
waitiface $netns2 veth4
|
||
|
|
ip1 route flush dev veth1
|
||
|
|
ip1 route flush dev veth3
|
||
|
|
ip1 route add 10.0.0.0/24 dev veth1 src 10.0.0.1 metric 2
|
||
|
|
n1 wg set wg0 peer "$pub2" endpoint 10.0.0.2:2
|
||
|
|
n1 ping -W 1 -c 1 192.168.241.2
|
||
|
|
[[ $(n2 wg show wg0 endpoints) == "$pub1 10.0.0.1:1" ]]
|
||
|
|
ip1 route add 10.0.0.0/24 dev veth3 src 10.0.0.3 metric 1
|
||
|
|
n1 bash -c 'printf 0 > /proc/sys/net/ipv4/conf/veth1/rp_filter'
|
||
|
|
n2 bash -c 'printf 0 > /proc/sys/net/ipv4/conf/veth4/rp_filter'
|
||
|
|
n1 bash -c 'printf 0 > /proc/sys/net/ipv4/conf/all/rp_filter'
|
||
|
|
n2 bash -c 'printf 0 > /proc/sys/net/ipv4/conf/all/rp_filter'
|
||
|
|
n1 ping -W 1 -c 1 192.168.241.2
|
||
|
|
[[ $(n2 wg show wg0 endpoints) == "$pub1 10.0.0.3:1" ]]
|
||
|
|
|
||
|
|
ip1 link del dev veth3
|
||
|
|
ip1 link del dev wg0
|
||
|
|
ip2 link del dev wg0
|
||
|
|
|
||
|
|
# Make sure persistent keep alives are sent when an adapter comes up
|
||
|
|
ip1 link add dev wg0 type wireguard
|
||
|
|
n1 wg set wg0 private-key <(echo "$key1") peer "$pub2" endpoint 10.0.0.1:1 persistent-keepalive 1
|
||
|
|
read _ _ tx_bytes < <(n1 wg show wg0 transfer)
|
||
|
|
[[ $tx_bytes -eq 0 ]]
|
||
|
|
ip1 link set dev wg0 up
|
||
|
|
read _ _ tx_bytes < <(n1 wg show wg0 transfer)
|
||
|
|
[[ $tx_bytes -gt 0 ]]
|
||
|
|
ip1 link del dev wg0
|
||
|
|
# This should also happen even if the private key is set later
|
||
|
|
ip1 link add dev wg0 type wireguard
|
||
|
|
n1 wg set wg0 peer "$pub2" endpoint 10.0.0.1:1 persistent-keepalive 1
|
||
|
|
read _ _ tx_bytes < <(n1 wg show wg0 transfer)
|
||
|
|
[[ $tx_bytes -eq 0 ]]
|
||
|
|
ip1 link set dev wg0 up
|
||
|
|
read _ _ tx_bytes < <(n1 wg show wg0 transfer)
|
||
|
|
[[ $tx_bytes -eq 0 ]]
|
||
|
|
n1 wg set wg0 private-key <(echo "$key1")
|
||
|
|
read _ _ tx_bytes < <(n1 wg show wg0 transfer)
|
||
|
|
[[ $tx_bytes -gt 0 ]]
|
||
|
|
ip1 link del dev veth1
|
||
|
|
ip1 link del dev wg0
|
||
|
|
|
||
|
|
# We test that Netlink/IPC is working properly by doing things that usually cause split responses
|
||
|
|
ip0 link add dev wg0 type wireguard
|
||
|
|
config=( "[Interface]" "PrivateKey=$(wg genkey)" "[Peer]" "PublicKey=$(wg genkey)" )
|
||
|
|
for a in {1..255}; do
|
||
|
|
for b in {0..255}; do
|
||
|
|
config+=( "AllowedIPs=$a.$b.0.0/16,$a::$b/128" )
|
||
|
|
done
|
||
|
|
done
|
||
|
|
n0 wg setconf wg0 <(printf '%s\n' "${config[@]}")
|
||
|
|
i=0
|
||
|
|
for ip in $(n0 wg show wg0 allowed-ips); do
|
||
|
|
((++i))
|
||
|
|
done
|
||
|
|
((i == 255*256*2+1))
|
||
|
|
ip0 link del wg0
|
||
|
|
ip0 link add dev wg0 type wireguard
|
||
|
|
config=( "[Interface]" "PrivateKey=$(wg genkey)" )
|
||
|
|
for a in {1..40}; do
|
||
|
|
config+=( "[Peer]" "PublicKey=$(wg genkey)" )
|
||
|
|
for b in {1..52}; do
|
||
|
|
config+=( "AllowedIPs=$a.$b.0.0/16" )
|
||
|
|
done
|
||
|
|
done
|
||
|
|
n0 wg setconf wg0 <(printf '%s\n' "${config[@]}")
|
||
|
|
i=0
|
||
|
|
while read -r line; do
|
||
|
|
j=0
|
||
|
|
for ip in $line; do
|
||
|
|
((++j))
|
||
|
|
done
|
||
|
|
((j == 53))
|
||
|
|
((++i))
|
||
|
|
done < <(n0 wg show wg0 allowed-ips)
|
||
|
|
((i == 40))
|
||
|
|
ip0 link del wg0
|
||
|
|
ip0 link add wg0 type wireguard
|
||
|
|
config=( )
|
||
|
|
for i in {1..29}; do
|
||
|
|
config+=( "[Peer]" "PublicKey=$(wg genkey)" )
|
||
|
|
done
|
||
|
|
config+=( "[Peer]" "PublicKey=$(wg genkey)" "AllowedIPs=255.2.3.4/32,abcd::255/128" )
|
||
|
|
n0 wg setconf wg0 <(printf '%s\n' "${config[@]}")
|
||
|
|
n0 wg showconf wg0 > /dev/null
|
||
|
|
ip0 link del wg0
|
||
|
|
|
||
|
|
allowedips=( )
|
||
|
|
for i in {1..197}; do
|
||
|
|
allowedips+=( abcd::$i )
|
||
|
|
done
|
||
|
|
saved_ifs="$IFS"
|
||
|
|
IFS=,
|
||
|
|
allowedips="${allowedips[*]}"
|
||
|
|
IFS="$saved_ifs"
|
||
|
|
ip0 link add wg0 type wireguard
|
||
|
|
n0 wg set wg0 peer "$pub1"
|
||
|
|
n0 wg set wg0 peer "$pub2" allowed-ips "$allowedips"
|
||
|
|
{
|
||
|
|
read -r pub allowedips
|
||
|
|
[[ $pub == "$pub1" && $allowedips == "(none)" ]]
|
||
|
|
read -r pub allowedips
|
||
|
|
[[ $pub == "$pub2" ]]
|
||
|
|
i=0
|
||
|
|
for _ in $allowedips; do
|
||
|
|
((++i))
|
||
|
|
done
|
||
|
|
((i == 197))
|
||
|
|
} < <(n0 wg show wg0 allowed-ips)
|
||
|
|
ip0 link del wg0
|
||
|
|
|
||
|
|
! n0 wg show doesnotexist || false
|
||
|
|
|
||
|
|
ip0 link add wg0 type wireguard
|
||
|
|
n0 wg set wg0 private-key <(echo "$key1") peer "$pub2" preshared-key <(echo "$psk")
|
||
|
|
[[ $(n0 wg show wg0 private-key) == "$key1" ]]
|
||
|
|
[[ $(n0 wg show wg0 preshared-keys) == "$pub2 $psk" ]]
|
||
|
|
n0 wg set wg0 private-key /dev/null peer "$pub2" preshared-key /dev/null
|
||
|
|
[[ $(n0 wg show wg0 private-key) == "(none)" ]]
|
||
|
|
[[ $(n0 wg show wg0 preshared-keys) == "$pub2 (none)" ]]
|
||
|
|
n0 wg set wg0 peer "$pub2"
|
||
|
|
n0 wg set wg0 private-key <(echo "$key2")
|
||
|
|
[[ $(n0 wg show wg0 public-key) == "$pub2" ]]
|
||
|
|
[[ -z $(n0 wg show wg0 peers) ]]
|
||
|
|
n0 wg set wg0 peer "$pub2"
|
||
|
|
[[ -z $(n0 wg show wg0 peers) ]]
|
||
|
|
n0 wg set wg0 private-key <(echo "$key1")
|
||
|
|
n0 wg set wg0 peer "$pub2"
|
||
|
|
[[ $(n0 wg show wg0 peers) == "$pub2" ]]
|
||
|
|
n0 wg set wg0 private-key <(echo "/${key1:1}")
|
||
|
|
[[ $(n0 wg show wg0 private-key) == "+${key1:1}" ]]
|
||
|
|
n0 wg set wg0 peer "$pub2" allowed-ips 0.0.0.0/0,10.0.0.0/8,100.0.0.0/10,172.16.0.0/12,192.168.0.0/16
|
||
|
|
n0 wg set wg0 peer "$pub2" allowed-ips 0.0.0.0/0
|
||
|
|
n0 wg set wg0 peer "$pub2" allowed-ips ::/0,1700::/111,5000::/4,e000::/37,9000::/75
|
||
|
|
n0 wg set wg0 peer "$pub2" allowed-ips ::/0
|
||
|
|
n0 wg set wg0 peer "$pub2" remove
|
||
|
|
for low_order_point in AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA= AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA= 4Ot6fDtBuK4WVuP68Z/EatoJjeucMrH9hmIFFl9JuAA= X5yVvKNQjCSx0LFVnIPvWwREXMRYHI6G2CJO3dCfEVc= 7P///////////////////////////////////////38= 7f///////////////////////////////////////38= 7v///////////////////////////////////////38=; do
|
||
|
|
n0 wg set wg0 peer "$low_order_point" persistent-keepalive 1 endpoint 127.0.0.1:1111
|
||
|
|
done
|
||
|
|
[[ -n $(n0 wg show wg0 peers) ]]
|
||
|
|
exec 4< <(n0 ncat -l -u -p 1111)
|
||
|
|
ncat_pid=$!
|
||
|
|
waitncatudp $netns0 $ncat_pid
|
||
|
|
ip0 link set wg0 up
|
||
|
|
! read -r -n 1 -t 2 <&4 || false
|
||
|
|
kill $ncat_pid
|
||
|
|
ip0 link del wg0
|
||
|
|
|
||
|
|
# Ensure that dst_cache references don't outlive netns lifetime
|
||
|
|
ip1 link add dev wg0 type wireguard
|
||
|
|
ip2 link add dev wg0 type wireguard
|
||
|
|
configure_peers
|
||
|
|
ip1 link add veth1 type veth peer name veth2
|
||
|
|
ip1 link set veth2 netns $netns2
|
||
|
|
ip1 addr add fd00:aa::1/64 dev veth1
|
||
|
|
ip2 addr add fd00:aa::2/64 dev veth2
|
||
|
|
ip1 link set veth1 up
|
||
|
|
ip2 link set veth2 up
|
||
|
|
waitiface $netns1 veth1
|
||
|
|
waitiface $netns2 veth2
|
||
|
|
ip1 -6 route add default dev veth1 via fd00:aa::2
|
||
|
|
ip2 -6 route add default dev veth2 via fd00:aa::1
|
||
|
|
n1 wg set wg0 peer "$pub2" endpoint [fd00:aa::2]:2
|
||
|
|
n2 wg set wg0 peer "$pub1" endpoint [fd00:aa::1]:1
|
||
|
|
n1 ping6 -c 1 fd00::2
|
||
|
|
pp ip netns delete $netns1
|
||
|
|
pp ip netns delete $netns2
|
||
|
|
pp ip netns add $netns1
|
||
|
|
pp ip netns add $netns2
|
||
|
|
|
||
|
|
# Ensure there aren't circular reference loops
|
||
|
|
ip1 link add wg1 type wireguard
|
||
|
|
ip2 link add wg2 type wireguard
|
||
|
|
ip1 link set wg1 netns $netns2
|
||
|
|
ip2 link set wg2 netns $netns1
|
||
|
|
pp ip netns delete $netns1
|
||
|
|
pp ip netns delete $netns2
|
||
|
|
pp ip netns add $netns1
|
||
|
|
pp ip netns add $netns2
|
||
|
|
|
||
|
|
sleep 2 # Wait for cleanup and grace periods
|
||
|
|
declare -A objects
|
||
|
|
while read -t 0.1 -r line 2>/dev/null || [[ $? -ne 142 ]]; do
|
||
|
|
[[ $line =~ .*(wg[0-9]+:\ [A-Z][a-z]+\ ?[0-9]*)\ .*(created|destroyed).* ]] || continue
|
||
|
|
objects["${BASH_REMATCH[1]}"]+="${BASH_REMATCH[2]}"
|
||
|
|
done < /dev/kmsg
|
||
|
|
alldeleted=1
|
||
|
|
for object in "${!objects[@]}"; do
|
||
|
|
if [[ ${objects["$object"]} != *createddestroyed && ${objects["$object"]} != *createdcreateddestroyeddestroyed ]]; then
|
||
|
|
echo "Error: $object: merely ${objects["$object"]}" >&3
|
||
|
|
alldeleted=0
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
[[ $alldeleted -eq 1 ]]
|
||
|
|
pretty "" "Objects that were created were also destroyed."
|