xref: /freebsd/tests/sys/netpfil/pf/pflog.sh (revision 7309c551a56edeb2e3d35639ecb20b5a70885924)

#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2023 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
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# 2. Redistributions in binary form must reproduce the above copyright
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# SUCH DAMAGE.

. $(atf_get_srcdir)/utils.subr

common_dir=$(atf_get_srcdir)/../common

atf_test_case "malformed" "cleanup"
malformed_head()
{
	atf_set descr 'Test that we do not log malformed packets as passing'
	atf_set require.user root
	atf_set require.progs scapy
}

malformed_body()
{
	pflog_init

	epair=$(vnet_mkepair)

	vnet_mkjail srv ${epair}b
	jexec srv ifconfig ${epair}b 192.0.2.1/24 up

	vnet_mkjail cl ${epair}a
	jexec cl ifconfig ${epair}a 192.0.2.2/24 up

	jexec cl pfctl -e
	jexec cl ifconfig pflog0 up
	pft_set_rules cl \
		"pass log keep state"

	# Not required, but the 'pf: dropping packet with ip options' kernel log can
	# help when debugging the test.
	jexec cl pfctl -x loud

	jexec cl tcpdump -n -e -ttt --immediate-mode -l -U -i pflog0 >> pflog.txt &
	sleep 1 # Wait for tcpdump to start

	# Sanity check
	atf_check -s exit:0 -o ignore \
	    jexec srv ping -c 1 192.0.2.2

	jexec srv ${common_dir}/pft_ping.py  \
	    --sendif ${epair}b \
	    --to 192.0.2.2 \
	    --send-nop \
	    --recvif ${epair}b

	atf_check -o match:".*rule 0/8\(ip-option\): block in on ${epair}a: 192.0.2.1 > 192.0.2.2: ICMP echo request.*" \
	    cat pflog.txt
}

malformed_cleanup()
{
	pft_cleanup
}

atf_test_case "matches" "cleanup"
matches_head()
{
	atf_set descr 'Test the pflog matches keyword'
	atf_set require.user root
}

matches_body()
{
	pflog_init

	epair=$(vnet_mkepair)

	vnet_mkjail alcatraz ${epair}a
	jexec alcatraz ifconfig ${epair}a 192.0.2.1/24 up

	ifconfig ${epair}b 192.0.2.2/24 up

	# Sanity check
	atf_check -s exit:0 -o ignore \
	    ping -c 1 192.0.2.1

	jexec alcatraz pfctl -e
	jexec alcatraz ifconfig pflog0 up
	pft_set_rules alcatraz \
		"match log(matches) inet proto icmp" \
		"match log(matches) inet from 192.0.2.2" \
		"pass"

	jexec alcatraz tcpdump -n -e -ttt --immediate-mode -l -U -i pflog0 >> ${PWD}/pflog.txt &
	sleep 1 # Wait for tcpdump to start

	atf_check -s exit:0 -o ignore \
	    ping -c 1 192.0.2.1

	echo "Rules"
	jexec alcatraz pfctl -sr -vv
	echo "States"
	jexec alcatraz pfctl -ss -vv
	echo "Log"
	cat ${PWD}/pflog.txt

	atf_check -o match:".*rule 0/0\(match\): match in on ${epair}a: 192.0.2.2 > 192.0.2.1: ICMP echo request.*" \
	    cat pflog.txt
	atf_check -o match:".*rule 1/0\(match\): match in on ${epair}a: 192.0.2.2 > 192.0.2.1: ICMP echo request.*" \
	    cat pflog.txt
}

matches_cleanup()
{
	pft_cleanup
}

atf_init_test_cases()
{
	atf_add_test_case "malformed"
	atf_add_test_case "matches"
}