netns: trim test to working parts and rework jail logic
Rather than agonizing on and on about finishing this, just get what actually works in a tidy place. We also make everything happen in a dedicated child jail, and work with JIDs instead of labels. This should improve isolation and reliability. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
parent
a554cedba4
commit
3be23818a1
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@ -1,164 +0,0 @@
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# $FreeBSD$
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#
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# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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#
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# Copyright (c) 2021 The FreeBSD Foundation
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. $(atf_get_srcdir)/../common/vnet.subr
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atf_test_case "wg_basic" "cleanup"
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wg_basic_head()
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{
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atf_set descr 'Create a wg(4) tunnel over an epair and pass traffic between jails'
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atf_set require.user root
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}
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wg_basic_body()
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{
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local epair pri1 pri2 pub1 pub2 wg1 wg2
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local endpoint1 endpoint2 tunnel1 tunnel2
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kldload -n if_wg
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pri1=$(openssl rand -base64 32)
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pri2=$(openssl rand -base64 32)
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endpoint1=192.168.2.1
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endpoint2=192.168.2.2
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tunnel1=169.254.0.1
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tunnel2=169.254.0.2
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epair=$(vnet_mkepair)
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vnet_init
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vnet_mkjail wgtest1 ${epair}a
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vnet_mkjail wgtest2 ${epair}b
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# Workaround for PR 254212.
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jexec wgtest1 ifconfig lo0 up
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jexec wgtest2 ifconfig lo0 up
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jexec wgtest1 ifconfig ${epair}a $endpoint1 up
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jexec wgtest2 ifconfig ${epair}b $endpoint2 up
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wg1=$(jexec wgtest1 ifconfig wg create listen-port 12345 private-key "$pri1")
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pub1=$(jexec wgtest1 ifconfig $wg1 | awk '/public-key:/ {print $2}')
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wg2=$(jexec wgtest2 ifconfig wg create listen-port 12345 private-key "$pri2")
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pub2=$(jexec wgtest2 ifconfig $wg2 | awk '/public-key:/ {print $2}')
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atf_check -s exit:0 -o ignore \
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jexec wgtest1 ifconfig $wg1 peer public-key "$pub2" \
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endpoint ${endpoint2}:12345 allowed-ips ${tunnel2}/32
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atf_check -s exit:0 \
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jexec wgtest1 ifconfig $wg1 inet $tunnel1 up
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atf_check -s exit:0 -o ignore \
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jexec wgtest2 ifconfig $wg2 peer public-key "$pub1" \
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endpoint ${endpoint1}:12345 allowed-ips ${tunnel1}/32
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atf_check -s exit:0 \
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jexec wgtest2 ifconfig $wg2 inet $tunnel2 up
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# Generous timeout since the handshake takes some time.
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atf_check -s exit:0 -o ignore jexec wgtest1 ping -o -t 5 -i 0.25 $tunnel2
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atf_check -s exit:0 -o ignore jexec wgtest2 ping -o -t 5 -i 0.25 $tunnel1
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}
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wg_basic_cleanup()
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{
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vnet_cleanup
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}
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# The kernel is expecteld to silently ignore any attempt to add a peer with a
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# public key identical to the host's.
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atf_test_case "wg_key_peerdev_shared" "cleanup"
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wg_key_peerdev_shared_head()
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{
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atf_set descr 'Create a wg(4) interface with a shared pubkey between device and a peer'
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atf_set require.user root
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}
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wg_key_peerdev_shared_body()
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{
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local epair pri1 pub1 wg1
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local endpoint1 tunnel1
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kldload -n if_wg
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pri1=$(openssl rand -base64 32)
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endpoint1=192.168.2.1
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tunnel1=169.254.0.1
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vnet_mkjail wgtest1
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wg1=$(jexec wgtest1 ifconfig wg create listen-port 12345 private-key "$pri1")
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pub1=$(jexec wgtest1 ifconfig $wg1 | awk '/public-key:/ {print $2}')
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atf_check -s exit:0 \
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jexec wgtest1 ifconfig ${wg1} peer public-key "${pub1}" \
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allowed-ips "${tunnel1}/32"
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atf_check -o empty jexec wgtest1 ifconfig ${wg1} peers
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}
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wg_key_peerdev_shared_cleanup()
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{
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vnet_cleanup
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}
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# When a wg(8) interface has a private key reassigned that corresponds to the
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# public key already on a peer, the kernel is expected to deconfigure the peer
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# to resolve the conflict.
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atf_test_case "wg_key_peerdev_makeshared" "cleanup"
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wg_key_peerdev_makeshared_head()
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{
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atf_set descr 'Create a wg(4) interface and assign peer key to device'
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atf_set require.progs wg
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}
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wg_key_peerdev_makeshared_body()
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{
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local epair pri1 pub1 pri2 wg1 wg2
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local endpoint1 tunnel1
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kldload -n if_wg
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pri1=$(openssl rand -base64 32)
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pri2=$(openssl rand -base64 32)
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endpoint1=192.168.2.1
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tunnel1=169.254.0.1
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vnet_mkjail wgtest1
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wg1=$(jexec wgtest1 ifconfig wg create listen-port 12345 private-key "$pri1")
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pub1=$(jexec wgtest1 ifconfig $wg1 | awk '/public-key:/ {print $2}')
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wg2=$(jexec wgtest1 ifconfig wg create listen-port 12345 private-key "$pri2")
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atf_check -s exit:0 -o ignore \
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jexec wgtest1 ifconfig ${wg2} peer public-key "${pub1}" \
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allowed-ips "${tunnel1}/32"
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atf_check -o not-empty jexec wgtest1 ifconfig ${wg2} peers
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jexec wgtest1 sh -c "echo '${pri1}' > pri1"
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atf_check -s exit:0 \
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jexec wgtest1 wg set ${wg2} private-key pri1
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atf_check -o empty jexec wgtest1 ifconfig ${wg2} peers
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}
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wg_key_peerdev_makeshared_cleanup()
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{
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vnet_cleanup
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}
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atf_init_test_cases()
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{
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atf_add_test_case "wg_basic"
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atf_add_test_case "wg_key_peerdev_shared"
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atf_add_test_case "wg_key_peerdev_makeshared"
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}
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586
tests/netns.sh
586
tests/netns.sh
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#!/usr/bin/env bash
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#
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# SPDX-License-Identifier: GPL-2.0
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# SPDX-License-Identifier: MIT
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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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# Copyright (C) 2015-2021 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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# This requires iperf3, bash, and wireguard-tools.
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set -e
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# Needs iperf3
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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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jail0="wg-test-$$-0"
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jail1="wg-test-$$-1"
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jail2="wg-test-$$-2"
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pretty() { echo -e "\x1b[32m\x1b[1m[+] ${1:+NS$1: }${2}\x1b[0m" >&3; }
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pretty() { echo -e "\x1b[32m\x1b[1m[+] ${1:+J$1: }${2}\x1b[0m" >&3; }
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pp() { pretty "" "$*"; "$@"; }
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maybe_exec() { if [[ $BASHPID -eq $$ ]]; then "$@"; else exec "$@"; fi; }
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j0() { pretty 0 "$*"; maybe_exec jexec $jail0 "$@"; }
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j1() { pretty 1 "$*"; maybe_exec jexec $jail1 "$@"; }
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j2() { pretty 2 "$*"; maybe_exec jexec $jail2 "$@"; }
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je() { local jid="$1"; shift; pretty "$jid" "$*"; maybe_exec jexec "$jid" "$@"; }
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j0() { je "$jid0" "$@"; }
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j1() { je "$jid1" "$@"; }
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j2() { je "$jid2" "$@"; }
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ifconfig0() { j0 ifconfig "$@"; }
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ifconfig1() { j1 ifconfig "$@"; }
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ifconfig2() { j2 ifconfig "$@"; }
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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=$2,fd=* ]]; do sleep 0.1; done; }
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waitiperf() { pretty "${1//*-}" "wait for iperf:${3:-5201} pid $2"; while ! sockstat -qj "$1" -ql -P tcp -p "${3:-5201}" | grep -Eq "iperf3[[:space:]]+$2[[:space:]]"; do sleep 0.1; done; }
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waitncatudp() { pretty "${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"; jexec "$1" bash -c "while ! ifconfig wg0 | grep -qE 'flags.+UP'; do read -t .1 -N 0 || true; done;"; }
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cj() { pretty "" "Creating $1"; jail -c path=/ vnet=new name="$1" persist; }
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dj() { pretty "" "Deleting $1"; jail -r "$1" >/dev/null; }
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waitiperf() { pretty "$1" "wait for iperf:${3:-5201} pid $2"; jexec "$1" bash -c "while ! sockstat -ql -P tcp -p '${3:-5201}' | grep -Eq 'iperf3[[:space:]]+$2[[:space:]]'; do sleep 0.1; done;"; }
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cleanup() {
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set +e
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exec 2>/dev/null
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# printf "$orig_message_cost" > /proc/sys/net/core/message_cost
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dj $jail0
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dj $jail1
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dj $jail2
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for iface in wg1 wg2; do
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pretty "" "Awaiting return of ${iface}"
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# Give interfaces a second to return
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while ! ifconfig ${iface} &> /dev/null; do
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sleep 0.1
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done
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ifconfig ${iface} destroy
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for i in 0 1 2; do
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ifconfig$i wg1 destroy
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ifconfig$i wg2 destroy
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done
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pp jail -r $jid0 # Should take care of children
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exit
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}
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trap cleanup EXIT
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dj $jail0 || true
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dj $jail1 || true
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dj $jail2 || true
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cj $jail0
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cj $jail1
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cj $jail2
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ifconfig wg1 create
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ifconfig wg1 debug
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ifconfig wg1 vnet ${jail1}
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ifconfig wg2 create
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ifconfig wg2 debug
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ifconfig wg2 vnet ${jail2}
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key1="$(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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[[ -n $key1 && -n $key2 && -n $pub1 && -n $pub2 && -n $psk ]]
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jid0="$(pp jail -ic path=/ vnet=new children.max=2 persist)"
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jid1="$(j0 jail -ic path=/ vnet=new persist)"
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jid2="$(j0 jail -ic path=/ vnet=new persist)"
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ifconfig0 lo0 127.0.0.1/8
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ifconfig0 lo0 inet6 ::1/128
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ifconfig0 lo0 up
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ifconfig0 wg1 create
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ifconfig0 wg1 debug
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ifconfig0 wg1 vnet $jid1
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ifconfig0 wg2 create
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ifconfig0 wg2 debug
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ifconfig0 wg2 vnet $jid2
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configure_peers() {
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ifconfig1 wg1 inet 192.168.241.1/24
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@ -129,22 +89,22 @@ tests() {
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# TCP over IPv4
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j2 iperf3 -s -1 -B 192.168.241.2 &
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waitiperf $jail2 $!
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waitiperf $jid2 $!
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j1 iperf3 -Z -t 3 -c 192.168.241.2
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# TCP over IPv6
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j1 iperf3 -s -1 -B fd00::1 &
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waitiperf $jail1 $!
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waitiperf $jid1 $!
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j2 iperf3 -Z -t 3 -c fd00::1
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# UDP over IPv4
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j1 iperf3 -s -1 -B 192.168.241.1 &
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waitiperf $jail1 $!
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waitiperf $jid1 $!
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j2 iperf3 -Z -t 3 -b 0 -u -c 192.168.241.1
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# UDP over IPv6
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j2 iperf3 -s -1 -B fd00::2 &
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waitiperf $jail2 $!
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waitiperf $jid2 $!
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j1 iperf3 -Z -t 3 -b 0 -u -c fd00::2
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# TCP over IPv4, in parallel
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@ -152,7 +112,7 @@ tests() {
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local pids=( )
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for ((i=0; i < max; ++i)) do
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j2 iperf3 -p $(( 5200 + i )) -s -1 -B 192.168.241.2 &
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pids+=( $! ); waitiperf $jail2 $! $(( 5200 + i ))
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pids+=( $! ); waitiperf $jid2 $! $(( 5200 + i ))
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done
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for ((i=0; i < max; ++i)) do
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j1 iperf3 -Z -t 3 -p $(( 5200 + i )) -c 192.168.241.2 &
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@ -162,484 +122,24 @@ tests() {
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}
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[[ $(ifconfig1 wg1) =~ mtu\ ([0-9]+) ]] && orig_mtu="${BASH_REMATCH[1]}"
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#big_mtu=$(( 34816 - 1500 + $orig_mtu ))
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# XXX
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big_mtu=16304
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big_mtu=$(( 16384 - 1500 + $orig_mtu ))
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# Test using IPv4 as outer transport
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ifconfig1 wg1 mtu $orig_mtu
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ifconfig2 wg2 mtu $orig_mtu
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j1 wg set wg1 peer "$pub2" endpoint 127.0.0.1:2
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j2 wg set wg2 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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#j2 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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ifconfig1 wg1 mtu $big_mtu
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ifconfig2 wg2 mtu $big_mtu
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tests
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exit 0
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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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ifconfig1 wg1 mtu $orig_mtu
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ifconfig2 wg2 mtu $orig_mtu
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j1 wg set wg1 peer "$pub2" endpoint [::1]:2
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j2 wg set wg2 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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ifconfig1 wg1 mtu $big_mtu
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ifconfig2 wg2 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
|
||||
n2 ip route delete 192.168.241.1/32 dev wg0 mtu 1299
|
||||
n1 ip route delete 192.168.241.2/32 dev wg0 mtu 1299
|
||||
n0 iptables -F INPUT
|
||||
|
||||
ip1 link set wg0 mtu $orig_mtu
|
||||
ip2 link set wg0 mtu $orig_mtu
|
||||
|
||||
# Test using IPv4 that roaming works
|
||||
ip0 -4 addr del 127.0.0.1/8 dev lo
|
||||
ip0 -4 addr add 127.212.121.99/8 dev lo
|
||||
n1 wg set wg0 listen-port 9999
|
||||
n1 wg set wg0 peer "$pub2" endpoint 127.0.0.1:2
|
||||
n1 ping6 -W 1 -c 1 fd00::2
|
||||
[[ $(n2 wg show wg0 endpoints) == "$pub1 127.212.121.99:9999" ]]
|
||||
|
||||
# Test using IPv6 that roaming works
|
||||
n1 wg set wg0 listen-port 9998
|
||||
n1 wg set wg0 peer "$pub2" endpoint [::1]:2
|
||||
n1 ping -W 1 -c 1 192.168.241.2
|
||||
[[ $(n2 wg show wg0 endpoints) == "$pub1 [::1]:9998" ]]
|
||||
|
||||
# Test that crypto-RP filter works
|
||||
n1 wg set wg0 peer "$pub2" allowed-ips 192.168.241.0/24
|
||||
exec 4< <(n1 ncat -l -u -p 1111)
|
||||
ncat_pid=$!
|
||||
waitncatudp $jail1 $ncat_pid
|
||||
n2 ncat -u 192.168.241.1 1111 <<<"X"
|
||||
read -r -N 1 -t 1 out <&4 && [[ $out == "X" ]]
|
||||
kill $ncat_pid
|
||||
more_specific_key="$(pp wg genkey | pp wg pubkey)"
|
||||
n1 wg set wg0 peer "$more_specific_key" allowed-ips 192.168.241.2/32
|
||||
n2 wg set wg0 listen-port 9997
|
||||
exec 4< <(n1 ncat -l -u -p 1111)
|
||||
ncat_pid=$!
|
||||
waitncatudp $jail1 $ncat_pid
|
||||
n2 ncat -u 192.168.241.1 1111 <<<"X"
|
||||
! read -r -N 1 -t 1 out <&4 || false
|
||||
kill $ncat_pid
|
||||
n1 wg set wg0 peer "$more_specific_key" remove
|
||||
[[ $(n1 wg show wg0 endpoints) == "$pub2 [::1]:9997" ]]
|
||||
|
||||
# Test that we can change private keys keys and immediately handshake
|
||||
n1 wg set wg0 private-key <(echo "$key1") peer "$pub2" preshared-key <(echo "$psk") allowed-ips 192.168.241.2/32 endpoint 127.0.0.1:2
|
||||
n2 wg set wg0 private-key <(echo "$key2") listen-port 2 peer "$pub1" preshared-key <(echo "$psk") allowed-ips 192.168.241.1/32
|
||||
n1 ping -W 1 -c 1 192.168.241.2
|
||||
n1 wg set wg0 private-key <(echo "$key3")
|
||||
n2 wg set wg0 peer "$pub3" preshared-key <(echo "$psk") allowed-ips 192.168.241.1/32 peer "$pub1" remove
|
||||
n1 ping -W 1 -c 1 192.168.241.2
|
||||
n2 wg set wg0 peer "$pub3" remove
|
||||
|
||||
# Test that we can route wg through wg
|
||||
ip1 addr flush dev wg0
|
||||
ip2 addr flush dev wg0
|
||||
ip1 addr add fd00::5:1/112 dev wg0
|
||||
ip2 addr add fd00::5:2/112 dev wg0
|
||||
n1 wg set wg0 private-key <(echo "$key1") peer "$pub2" preshared-key <(echo "$psk") allowed-ips fd00::5:2/128 endpoint 127.0.0.1:2
|
||||
n2 wg set wg0 private-key <(echo "$key2") listen-port 2 peer "$pub1" preshared-key <(echo "$psk") allowed-ips fd00::5:1/128 endpoint 127.212.121.99:9998
|
||||
ip1 link add wg1 type wireguard
|
||||
ip2 link add wg1 type wireguard
|
||||
ip1 addr add 192.168.241.1/24 dev wg1
|
||||
ip1 addr add fd00::1/112 dev wg1
|
||||
ip2 addr add 192.168.241.2/24 dev wg1
|
||||
ip2 addr add fd00::2/112 dev wg1
|
||||
ip1 link set mtu 1340 up dev wg1
|
||||
ip2 link set mtu 1340 up dev wg1
|
||||
n1 wg set wg1 listen-port 5 private-key <(echo "$key3") peer "$pub4" allowed-ips 192.168.241.2/32,fd00::2/128 endpoint [fd00::5:2]:5
|
||||
n2 wg set wg1 listen-port 5 private-key <(echo "$key4") peer "$pub3" allowed-ips 192.168.241.1/32,fd00::1/128 endpoint [fd00::5:1]:5
|
||||
tests
|
||||
# Try to set up a routing loop between the two namespaces
|
||||
ip1 link set netns $jail0 dev wg1
|
||||
ip0 addr add 192.168.241.1/24 dev wg1
|
||||
ip0 link set up dev wg1
|
||||
n0 ping -W 1 -c 1 192.168.241.2
|
||||
n1 wg set wg0 peer "$pub2" endpoint 192.168.241.2:7
|
||||
ip2 link del wg0
|
||||
ip2 link del wg1
|
||||
! n0 ping -W 1 -c 10 -f 192.168.241.2 || false # Should not crash kernel
|
||||
|
||||
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 $jail1
|
||||
ip0 link set veths netns $jail2
|
||||
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 $jail0 vethrc
|
||||
waitiface $jail0 vethrs
|
||||
waitiface $jail1 vethc
|
||||
waitiface $jail2 veths
|
||||
|
||||
n0 bash -c 'printf 1 > /proc/sys/net/ipv4/ip_forward'
|
||||
n0 bash -c 'printf 2 > /proc/sys/net/netfilter/nf_conntrack_udp_timeout'
|
||||
n0 bash -c 'printf 2 > /proc/sys/net/netfilter/nf_conntrack_udp_timeout_stream'
|
||||
n0 iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -d 10.0.0.0/24 -j SNAT --to 10.0.0.1
|
||||
|
||||
n1 wg set wg0 peer "$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 "$pub2" allowed-ips 192.168.99.7,abab::1111
|
||||
ip1 -6 route add default dev wg0 table 51820
|
||||
ip1 -6 rule add not fwmark 51820 table 51820
|
||||
ip1 -6 rule add table main suppress_prefixlength 0
|
||||
ip1 -4 route add default dev wg0 table 51820
|
||||
ip1 -4 rule add not fwmark 51820 table 51820
|
||||
ip1 -4 rule add table main suppress_prefixlength 0
|
||||
# Flood the pings instead of sending just one, to trigger routing table reference counting bugs.
|
||||
n1 ping -W 1 -c 100 -f 192.168.99.7
|
||||
n1 ping -W 1 -c 100 -f abab::1111
|
||||
|
||||
# Have ns2 NAT into wg0 packets from ns0, but return an icmp error along the right route.
|
||||
n2 iptables -t nat -A POSTROUTING -s 10.0.0.0/24 -d 192.168.241.0/24 -j SNAT --to 192.168.241.2
|
||||
n0 iptables -t filter -A INPUT \! -s 10.0.0.0/24 -i vethrs -j DROP # Manual rpfilter just to be explicit.
|
||||
n2 bash -c 'printf 1 > /proc/sys/net/ipv4/ip_forward'
|
||||
ip0 -4 route add 192.168.241.1 via 10.0.0.100
|
||||
n2 wg set wg0 peer "$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 $jail2
|
||||
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 $jail1 veth1
|
||||
waitiface $jail2 veth2
|
||||
n1 wg set wg0 peer "$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 $jail1 veth1
|
||||
waitiface $jail2 veth2
|
||||
n2 wg set wg0 peer "$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 $jail2
|
||||
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 $jail1 veth1
|
||||
waitiface $jail2 veth2
|
||||
waitiface $jail1 veth3
|
||||
waitiface $jail2 veth4
|
||||
ip1 route flush dev veth1
|
||||
ip1 route flush dev veth3
|
||||
ip1 route add 10.0.0.0/24 dev veth1 src 10.0.0.1 metric 2
|
||||
n1 wg set wg0 peer "$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 veth1
|
||||
ip1 link del veth3
|
||||
ip1 link del wg0
|
||||
ip2 link del 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 $jail0 $ncat_pid
|
||||
ip0 link set wg0 up
|
||||
! read -r -n 1 -t 2 <&4 || false
|
||||
kill $ncat_pid
|
||||
ip0 link del wg0
|
||||
|
||||
# Ensure there aren't circular reference loops
|
||||
ip1 link add wg1 type wireguard
|
||||
ip2 link add wg2 type wireguard
|
||||
ip1 link set wg1 netns $jail2
|
||||
ip2 link set wg2 netns $jail1
|
||||
pp ip netns delete $jail1
|
||||
pp ip netns delete $jail2
|
||||
pp ip netns add $jail1
|
||||
pp ip netns add $jail2
|
||||
|
||||
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 ]]; then
|
||||
echo "Error: $object: merely ${objects["$object"]}" >&3
|
||||
alldeleted=0
|
||||
fi
|
||||
done
|
||||
[[ $alldeleted -eq 1 ]]
|
||||
pretty "" "Objects that were created were also destroyed."
|
||||
|
|
Loading…
Reference in New Issue