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# $FreeBSD$
#
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
#
# Copyright (c) 2018 Kristof Provost <kp@FreeBSD.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
. $(atf_get_srcdir)/utils.subr
common_dir=$(atf_get_srcdir)/../common
atf_test_case "v4" "cleanup"
v4_head()
{
atf_set descr 'Basic route-to test'
atf_set require.user root
}
v4_body()
{
pft_init
epair_send=$(vnet_mkepair)
ifconfig ${epair_send}a 192.0.2.1/24 up
epair_route=$(vnet_mkepair)
ifconfig ${epair_route}a 203.0.113.1/24 up
vnet_mkjail alcatraz ${epair_send}b ${epair_route}b
jexec alcatraz ifconfig ${epair_send}b 192.0.2.2/24 up
jexec alcatraz ifconfig ${epair_route}b 203.0.113.2/24 up
jexec alcatraz route add -net 198.51.100.0/24 192.0.2.1
jexec alcatraz pfctl -e
# Attempt to provoke PR 228782
pft_set_rules alcatraz "block all" "pass user 2" \
"pass out route-to (${epair_route}b 203.0.113.1) from 192.0.2.2 to 198.51.100.1 no state"
jexec alcatraz nc -w 3 -s 192.0.2.2 198.51.100.1 22
# atf wants us to not return an error, but our netcat will fail
true
}
v4_cleanup()
{
pft_cleanup
}
atf_test_case "v6" "cleanup"
v6_head()
{
atf_set descr 'Basic route-to test (IPv6)'
atf_set require.user root
}
v6_body()
{
pft_init
epair_send=$(vnet_mkepair)
ifconfig ${epair_send}a inet6 2001:db8:42::1/64 up no_dad -ifdisabled
epair_route=$(vnet_mkepair)
ifconfig ${epair_route}a inet6 2001:db8:43::1/64 up no_dad -ifdisabled
vnet_mkjail alcatraz ${epair_send}b ${epair_route}b
jexec alcatraz ifconfig ${epair_send}b inet6 2001:db8:42::2/64 up no_dad
jexec alcatraz ifconfig ${epair_route}b inet6 2001:db8:43::2/64 up no_dad
jexec alcatraz route add -6 2001:db8:666::/64 2001:db8:42::2
jexec alcatraz pfctl -e
# Attempt to provoke PR 228782
pft_set_rules alcatraz "block all" "pass user 2" \
"pass out route-to (${epair_route}b 2001:db8:43::1) from 2001:db8:42::2 to 2001:db8:666::1 no state"
jexec alcatraz nc -6 -w 3 -s 2001:db8:42::2 2001:db8:666::1 22
# atf wants us to not return an error, but our netcat will fail
true
}
v6_cleanup()
{
pft_cleanup
}
atf_test_case "multiwan" "cleanup"
multiwan_head()
{
atf_set descr 'Multi-WAN redirection / reply-to test'
atf_set require.user root
}
multiwan_body()
{
pft_init
epair_one=$(vnet_mkepair)
epair_two=$(vnet_mkepair)
epair_cl_one=$(vnet_mkepair)
epair_cl_two=$(vnet_mkepair)
vnet_mkjail srv ${epair_one}b ${epair_two}b
vnet_mkjail wan_one ${epair_one}a ${epair_cl_one}b
vnet_mkjail wan_two ${epair_two}a ${epair_cl_two}b
vnet_mkjail client ${epair_cl_one}a ${epair_cl_two}a
jexec client ifconfig ${epair_cl_one}a 203.0.113.1/25
jexec wan_one ifconfig ${epair_cl_one}b 203.0.113.2/25
jexec wan_one ifconfig ${epair_one}a 192.0.2.1/24 up
jexec wan_one sysctl net.inet.ip.forwarding=1
jexec srv ifconfig ${epair_one}b 192.0.2.2/24 up
jexec client route add 192.0.2.0/24 203.0.113.2
jexec client ifconfig ${epair_cl_two}a 203.0.113.128/25
jexec wan_two ifconfig ${epair_cl_two}b 203.0.113.129/25
jexec wan_two ifconfig ${epair_two}a 198.51.100.1/24 up
jexec wan_two sysctl net.inet.ip.forwarding=1
jexec srv ifconfig ${epair_two}b 198.51.100.2/24 up
jexec client route add 198.51.100.0/24 203.0.113.129
jexec srv ifconfig lo0 127.0.0.1/8 up
jexec srv route add default 192.0.2.1
jexec srv sysctl net.inet.ip.forwarding=1
# Run echo server in srv jail
jexec srv /usr/sbin/inetd -p multiwan.pid $(atf_get_srcdir)/echo_inetd.conf
jexec srv pfctl -e
pft_set_rules srv \
"nat on ${epair_one}b inet from 127.0.0.0/8 to any -> (${epair_one}b)" \
"nat on ${epair_two}b inet from 127.0.0.0/8 to any -> (${epair_two}b)" \
"rdr on ${epair_one}b inet proto tcp from any to 192.0.2.2 port 7 -> 127.0.0.1 port 7" \
"rdr on ${epair_two}b inet proto tcp from any to 198.51.100.2 port 7 -> 127.0.0.1 port 7" \
"block in" \
"block out" \
"pass in quick on ${epair_one}b reply-to (${epair_one}b 192.0.2.1) inet proto tcp from any to 127.0.0.1 port 7" \
"pass in quick on ${epair_two}b reply-to (${epair_two}b 198.51.100.1) inet proto tcp from any to 127.0.0.1 port 7"
# These will always succeed, because we don't change interface to route
# correctly here.
result=$(echo "one" | jexec wan_one nc -N -w 3 192.0.2.2 7)
if [ "${result}" != "one" ]; then
atf_fail "Redirect on one failed"
fi
result=$(echo "two" | jexec wan_two nc -N -w 3 198.51.100.2 7)
if [ "${result}" != "two" ]; then
atf_fail "Redirect on two failed"
fi
result=$(echo "one" | jexec client nc -N -w 3 192.0.2.2 7)
if [ "${result}" != "one" ]; then
atf_fail "Redirect from client on one failed"
fi
# This should trigger the issue fixed in 829a69db855b48ff7e8242b95e193a0783c489d9
result=$(echo "two" | jexec client nc -N -w 3 198.51.100.2 7)
if [ "${result}" != "two" ]; then
atf_fail "Redirect from client on two failed"
fi
}
multiwan_cleanup()
{
rm -f multiwan.pid
pft_cleanup
}
atf_test_case "multiwanlocal" "cleanup"
multiwanlocal_head()
{
atf_set descr 'Multi-WAN local origin source-based redirection / route-to test'
atf_set require.user root
}
multiwanlocal_body()
{
pft_init
epair_one=$(vnet_mkepair)
epair_two=$(vnet_mkepair)
epair_cl_one=$(vnet_mkepair)
epair_cl_two=$(vnet_mkepair)
vnet_mkjail srv1 ${epair_one}b
vnet_mkjail srv2 ${epair_two}b
vnet_mkjail wan_one ${epair_one}a ${epair_cl_one}b
vnet_mkjail wan_two ${epair_two}a ${epair_cl_two}b
vnet_mkjail client ${epair_cl_one}a ${epair_cl_two}a
jexec client ifconfig ${epair_cl_one}a 203.0.113.1/25
jexec wan_one ifconfig ${epair_cl_one}b 203.0.113.2/25
jexec wan_one ifconfig ${epair_one}a 192.0.2.1/24 up
jexec wan_one sysctl net.inet.ip.forwarding=1
jexec srv1 ifconfig ${epair_one}b 192.0.2.2/24 up
jexec client ifconfig ${epair_cl_two}a 203.0.113.128/25
jexec wan_two ifconfig ${epair_cl_two}b 203.0.113.129/25
jexec wan_two ifconfig ${epair_two}a 198.51.100.1/24 up
jexec wan_two sysctl net.inet.ip.forwarding=1
jexec srv2 ifconfig ${epair_two}b 198.51.100.2/24 up
jexec client route add default 203.0.113.2
jexec srv1 route add default 192.0.2.1
jexec srv2 route add default 198.51.100.1
# Run data source in srv1 and srv2
jexec srv1 sh -c 'dd if=/dev/zero bs=1024 count=100 | nc -l 7 -w 2 -N &'
jexec srv2 sh -c 'dd if=/dev/zero bs=1024 count=100 | nc -l 7 -w 2 -N &'
jexec client pfctl -e
pft_set_rules client \
"block in" \
"block out" \
"pass out quick route-to (${epair_cl_two}a 203.0.113.129) inet proto tcp from 203.0.113.128 to any port 7" \
"pass out on ${epair_cl_one}a inet proto tcp from any to any port 7"
# This should work
result=$(jexec client nc -N -w 1 192.0.2.2 7 | wc -c)
if [ ${result} -ne 102400 ]; then
jexec client pfctl -ss
atf_fail "Redirect from client on one failed: ${result}"
fi
# This should trigger the issue
result=$(jexec client nc -N -w 1 -s 203.0.113.128 198.51.100.2 7 | wc -c)
jexec client pfctl -ss
if [ ${result} -ne 102400 ]; then
atf_fail "Redirect from client on two failed: ${result}"
fi
}
multiwanlocal_cleanup()
{
pft_cleanup
}
atf_test_case "icmp_nat" "cleanup"
icmp_nat_head()
{
atf_set descr 'Test that ICMP packets are correct for route-to + NAT'
atf_set require.user root
atf_set require.progs scapy
}
icmp_nat_body()
{
pft_init
epair_one=$(vnet_mkepair)
epair_two=$(vnet_mkepair)
epair_three=$(vnet_mkepair)
vnet_mkjail gw ${epair_one}b ${epair_two}a ${epair_three}a
vnet_mkjail srv ${epair_two}b
vnet_mkjail srv2 ${epair_three}b
ifconfig ${epair_one}a 192.0.2.2/24 up
route add -net 198.51.100.0/24 192.0.2.1
jexec gw sysctl net.inet.ip.forwarding=1
jexec gw ifconfig ${epair_one}b 192.0.2.1/24 up
jexec gw ifconfig ${epair_two}a 198.51.100.1/24 up
jexec gw ifconfig ${epair_three}a 203.0.113.1/24 up mtu 500
jexec srv ifconfig ${epair_two}b 198.51.100.2/24 up
jexec srv route add default 198.51.100.1
jexec srv2 ifconfig ${epair_three}b 203.0.113.2/24 up mtu 500
jexec srv2 route add default 203.0.113.1
# Sanity check
atf_check -s exit:0 -o ignore ping -c 1 198.51.100.2
jexec gw pfctl -e
pft_set_rules gw \
"nat on ${epair_two}a inet from 192.0.2.0/24 to any -> (${epair_two}a)" \
"nat on ${epair_three}a inet from 192.0.2.0/24 to any -> (${epair_three}a)" \
"pass out route-to (${epair_three}a 203.0.113.2) proto icmp icmp-type echoreq"
# Now ensure that we get an ICMP error with the correct IP addresses in it.
atf_check -s exit:0 ${common_dir}/pft_icmp_check.py \
--to 198.51.100.2 \
--fromaddr 192.0.2.2 \
--recvif ${epair_one}a \
--sendif ${epair_one}a
# ping reports the ICMP error, so check of that too.
atf_check -s exit:2 -o match:'frag needed and DF set' \
ping -D -c 1 -s 1000 198.51.100.2
}
icmp_nat_cleanup()
{
pft_cleanup
}
atf_init_test_cases()
{
atf_add_test_case "v4"
atf_add_test_case "v6"
atf_add_test_case "multiwan"
atf_add_test_case "multiwanlocal"
atf_add_test_case "icmp_nat"
}
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