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pf tests: slightly more complect captive portal setup

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Combine anchor, dummynet and rdr to produce a more complex captive
portal setup.

Sponsored by:	Rubicon Communications, LLC ("Netgate")
Differential Revision:	https://reviews.freebsd.org/D32484
This commit is contained in:
Kristof Provost 2021-10-13 15:21:43 +02:00
parent d1702bd1c3
commit 93b64cdc59
3 changed files with 113 additions and 0 deletions

1
tests/sys/netpfil/pf/Makefile

@ -38,6 +38,7 @@ ATF_TESTS_SH+= altq \
${PACKAGE}FILES+= CVE-2019-5597.py \
CVE-2019-5598.py \
daytime_inetd.conf \
echo_inetd.conf \
fragcommon.py \
frag-overindex.py \

31
tests/sys/netpfil/pf/daytime_inetd.conf Normal file

@ -0,0 +1,31 @@
# $FreeBSD$
#
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
#
# Copyright (c) 2021 Rubicon Communications, LLC (Netgate)
#
# 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.
daytime stream tcp nowait root internal
daytime stream tcp6 nowait root internal
daytime dgram udp wait root internal
daytime dgram udp6 wait root internal

81
tests/sys/netpfil/pf/ether.sh

@ -295,6 +295,86 @@ captive_cleanup()
pft_cleanup
}
atf_test_case "captive_long" "cleanup"
captive_long_head()
{
atf_set descr 'More complex captive portal setup'
atf_set require.user root
}
captive_long_body()
{
# Host is client, jail 'gw' is the captive portal gateway, jail 'srv'
# is a random (web)server. We use the echo protocol rather than http
# for the test, because that's easier.
pft_init
if ! kldstat -q -m dummynet; then
atf_skip "This test requires dummynet"
fi
epair_gw=$(vnet_mkepair)
epair_srv=$(vnet_mkepair)
epair_gw_a_mac=$(ifconfig ${epair_gw}a ether | awk '/ether/ { print $2; }')
vnet_mkjail gw ${epair_gw}b ${epair_srv}a
vnet_mkjail srv ${epair_srv}b
ifconfig ${epair_gw}a 192.0.2.2/24 up
route add -net 198.51.100.0/24 192.0.2.1
jexec gw ifconfig ${epair_gw}b 192.0.2.1/24 up
jexec gw ifconfig lo0 127.0.0.1/8 up
jexec gw sysctl net.inet.ip.forwarding=1
jexec gw ifconfig ${epair_srv}a 198.51.100.1/24 up
jexec srv ifconfig ${epair_srv}b 198.51.100.2/24 up
jexec srv route add -net 192.0.2.0/24 198.51.100.1
jexec gw dnctl pipe 1 config bw 300KByte/s
# Sanity check
atf_check -s exit:0 -o ignore ping -c 1 -t 1 198.51.100.2
pft_set_rules gw \
"ether anchor \"captiveportal\" on { ${epair_gw}b } {" \
"ether pass quick proto { 0x0806, 0x8035, 0x888e, 0x88c7, 0x8863, 0x8864 }" \
"ether pass tag \"captive\"" \
"}" \
"rdr on ${epair_gw}b proto tcp to port daytime tagged captive -> 127.0.0.1 port echo"
jexec gw pfctl -e
# ICMP should still work, because we don't redirect it.
atf_check -s exit:0 -o ignore ping -c 1 -t 1 198.51.100.2
jexec gw /usr/sbin/inetd -p gw.pid $(atf_get_srcdir)/echo_inetd.conf
jexec srv /usr/sbin/inetd -p srv.pid $(atf_get_srcdir)/daytime_inetd.conf
echo foo | nc -N 198.51.100.2 13
# Confirm that we're getting redirected
atf_check -s exit:0 -o match:"^foo$" -x "echo foo | nc -N 198.51.100.2 13"
# Now update the rules to allow our client to pass without redirect
pft_set_rules gw \
"ether anchor \"captiveportal\" on { ${epair_gw}b } {" \
"ether pass quick proto { 0x0806, 0x8035, 0x888e, 0x88c7, 0x8863, 0x8864 }" \
"ether pass quick from { ${epair_gw_a_mac} } dnpipe 1" \
"ether pass tag \"captive\"" \
"}" \
"rdr on ${epair_gw}b proto tcp to port daytime tagged captive -> 127.0.0.1 port echo"
# We're not being redirected and get datime information now
atf_check -s exit:0 -o match:"^(Mon|Tue|Wed|Thu|Fri|Sat|Sun)" -x "echo foo | nc -N 198.51.100.2 13"
jexec gw killall inetd
jexec srv killall inetd
}
captive_long_cleanup()
{
pft_cleanup
}
atf_test_case "dummynet" "cleanup"
dummynet_head()
{
@ -404,6 +484,7 @@ atf_init_test_cases()
atf_add_test_case "proto"
atf_add_test_case "direction"
atf_add_test_case "captive"
atf_add_test_case "captive_long"
atf_add_test_case "dummynet"
atf_add_test_case "anchor"
}