#	$NetBSD: t_ipsec_transport.sh,v 1.2 2017/05/09 04:25:28 ozaki-r Exp $
#
# Copyright (c) 2017 Internet Initiative Japan Inc.
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SOCK_LOCAL=unix://ipsec_local
SOCK_PEER=unix://ipsec_peer
BUS=./bus_ipsec

DEBUG=${DEBUG:-false}

test_ipsec4_transport()
{
	local proto=$1
	local algo=$2
	local ip_local=10.0.0.1
	local ip_peer=10.0.0.2
	local keylen=$(get_one_valid_keylen $algo)
	local key=$(generate_key $keylen)
	local tmpfile=./tmp
	local outfile=./out
	local opt= proto_cap=

	if [ $proto = esp ]; then
		opt=-E
		proto_cap=ESP
	else
		opt=-A
		proto_cap=AH
	fi

	rump_server_crypto_start $SOCK_LOCAL netipsec
	rump_server_crypto_start $SOCK_PEER netipsec
	rump_server_add_iface $SOCK_LOCAL shmif0 $BUS
	rump_server_add_iface $SOCK_PEER shmif0 $BUS

	export RUMP_SERVER=$SOCK_LOCAL
	atf_check -s exit:0 rump.ifconfig shmif0 $ip_local/24
	atf_check -s exit:0 rump.ifconfig -w 10

	export RUMP_SERVER=$SOCK_PEER
	atf_check -s exit:0 rump.ifconfig shmif0 $ip_peer/24
	atf_check -s exit:0 rump.ifconfig -w 10

	extract_new_packets $BUS > $outfile

	export RUMP_SERVER=$SOCK_LOCAL
	atf_check -s exit:0 -o ignore rump.ping -c 1 -n -w 3 $ip_peer

	extract_new_packets $BUS > $outfile
	atf_check -s exit:0 -o match:"$ip_local > $ip_peer: ICMP echo request" \
	    cat $outfile
	atf_check -s exit:0 -o match:"$ip_peer > $ip_local: ICMP echo reply" \
	    cat $outfile

	export RUMP_SERVER=$SOCK_LOCAL
	# from https://www.netbsd.org/docs/network/ipsec/
	cat > $tmpfile <<-EOF
	add $ip_local $ip_peer $proto 10000 $opt $algo $key;
	add $ip_peer $ip_local $proto 10001 $opt $algo $key;
	spdadd $ip_local $ip_peer any -P out ipsec $proto/transport//require;
	EOF
	$DEBUG && cat $tmpfile
	atf_check -s exit:0 -o empty $HIJACKING setkey -c < $tmpfile
	$DEBUG && $HIJACKING setkey -D
	atf_check -s exit:0 -o match:"$ip_local $ip_peer" \
	    $HIJACKING setkey -D
	atf_check -s exit:0 -o match:"$ip_peer $ip_local" \
	    $HIJACKING setkey -D
	# TODO: more detail checks

	export RUMP_SERVER=$SOCK_PEER
	cat > $tmpfile <<-EOF
	add $ip_local $ip_peer $proto 10000 $opt $algo $key;
	add $ip_peer $ip_local $proto 10001 $opt $algo $key;
	spdadd $ip_peer $ip_local any -P out ipsec $proto/transport//require;
	EOF
	$DEBUG && cat $tmpfile
	atf_check -s exit:0 -o empty $HIJACKING setkey -c < $tmpfile
	$DEBUG && $HIJACKING setkey -D
	atf_check -s exit:0 -o match:"$ip_local $ip_peer" \
	    $HIJACKING setkey -D
	atf_check -s exit:0 -o match:"$ip_peer $ip_local" \
	    $HIJACKING setkey -D
	# TODO: more detail checks

	export RUMP_SERVER=$SOCK_LOCAL
	atf_check -s exit:0 -o ignore rump.ping -c 1 -n -w 3 $ip_peer

	extract_new_packets $BUS > $outfile
	atf_check -s exit:0 -o match:"$ip_local > $ip_peer: $proto_cap" \
	    cat $outfile
	atf_check -s exit:0 -o match:"$ip_peer > $ip_local: $proto_cap" \
	    cat $outfile

	test_flush_entries $SOCK_LOCAL
	test_flush_entries $SOCK_PEER
}

test_ipsec6_transport()
{
	local proto=$1
	local algo=$2
	local ip_local=fd00::1
	local ip_peer=fd00::2
	local keylen=$(get_one_valid_keylen $algo)
	local key=$(generate_key $keylen)
	local tmpfile=./tmp
	local outfile=./out
	local opt= proto_cap=

	if [ $proto = esp ]; then
		opt=-E
		proto_cap=ESP
	else
		opt=-A
		proto_cap=AH
	fi

	rump_server_crypto_start $SOCK_LOCAL netinet6 netipsec
	rump_server_crypto_start $SOCK_PEER netinet6 netipsec
	rump_server_add_iface $SOCK_LOCAL shmif0 $BUS
	rump_server_add_iface $SOCK_PEER shmif0 $BUS

	export RUMP_SERVER=$SOCK_LOCAL
	atf_check -s exit:0 rump.ifconfig shmif0 inet6 $ip_local
	atf_check -s exit:0 rump.ifconfig -w 10

	export RUMP_SERVER=$SOCK_PEER
	atf_check -s exit:0 rump.ifconfig shmif0 inet6 $ip_peer
	atf_check -s exit:0 rump.ifconfig -w 10

	extract_new_packets $BUS > $outfile

	export RUMP_SERVER=$SOCK_LOCAL
	atf_check -s exit:0 -o ignore rump.ping6 -c 1 -n -X 3 $ip_peer

	extract_new_packets $BUS > $outfile
	atf_check -s exit:0 -o match:"$ip_local > $ip_peer: ICMP6, echo request" \
	    cat $outfile
	atf_check -s exit:0 -o match:"$ip_peer > $ip_local: ICMP6, echo reply" \
	    cat $outfile

	export RUMP_SERVER=$SOCK_LOCAL
	# from https://www.netbsd.org/docs/network/ipsec/
	cat > $tmpfile <<-EOF
	add $ip_local $ip_peer $proto 10000 $opt $algo $key;
	add $ip_peer $ip_local $proto 10001 $opt $algo $key;
	spdadd $ip_local $ip_peer any -P out ipsec $proto/transport//require;
	EOF
	$DEBUG && cat $tmpfile
	atf_check -s exit:0 -o empty $HIJACKING setkey -c < $tmpfile
	$DEBUG && $HIJACKING setkey -D
	atf_check -s exit:0 -o match:"$ip_local $ip_peer" \
	    $HIJACKING setkey -D
	atf_check -s exit:0 -o match:"$ip_peer $ip_local" \
	    $HIJACKING setkey -D
	# TODO: more detail checks

	export RUMP_SERVER=$SOCK_PEER
	cat > $tmpfile <<-EOF
	add $ip_local $ip_peer $proto 10000 $opt $algo $key;
	add $ip_peer $ip_local $proto 10001 $opt $algo $key;
	spdadd $ip_peer $ip_local any -P out ipsec $proto/transport//require;
	EOF
	$DEBUG && cat $tmpfile
	atf_check -s exit:0 -o empty $HIJACKING setkey -c < $tmpfile
	$DEBUG && $HIJACKING setkey -D
	atf_check -s exit:0 -o match:"$ip_local $ip_peer" \
	    $HIJACKING setkey -D
	atf_check -s exit:0 -o match:"$ip_peer $ip_local" \
	    $HIJACKING setkey -D
	# TODO: more detail checks

	export RUMP_SERVER=$SOCK_LOCAL
	atf_check -s exit:0 -o ignore rump.ping6 -c 1 -n -X 3 $ip_peer

	extract_new_packets $BUS > $outfile
	atf_check -s exit:0 -o match:"$ip_local > $ip_peer: $proto_cap" \
	    cat $outfile
	atf_check -s exit:0 -o match:"$ip_peer > $ip_local: $proto_cap" \
	    cat $outfile

	test_flush_entries $SOCK_LOCAL
	test_flush_entries $SOCK_PEER
}

test_transport_common()
{
	local ipproto=$1
	local proto=$2
	local algo=$3

	if [ $ipproto = ipv4 ]; then
		test_ipsec4_transport $proto $algo
	else
		test_ipsec6_transport $proto $algo
	fi
}

add_test_transport_mode()
{
	local ipproto=$1
	local proto=$2
	local algo=$3
	local _algo=$(echo $algo | sed 's/-//g')
	local name= desc=

	name="ipsec_transport_${ipproto}_${proto}_${_algo}"
	desc="Tests of IPsec ($ipproto) transport mode with $proto ($algo)"

	atf_test_case ${name} cleanup
	eval "								\
	    ${name}_head() {						\
	        atf_set \"descr\" \"$desc\";				\
	        atf_set \"require.progs\" \"rump_server\" \"setkey\";	\
	    };								\
	    ${name}_body() {						\
	        test_transport_common $ipproto $proto $algo;		\
	        rump_server_destroy_ifaces;				\
	    };								\
	    ${name}_cleanup() {						\
	        $DEBUG && dump;						\
	        cleanup;						\
	    }								\
	"
	atf_add_test_case ${name}
}

atf_init_test_cases()
{
	local algo=

	for algo in $ESP_ENCRYPTION_ALGORITHMS; do
		add_test_transport_mode ipv4 esp $algo
		add_test_transport_mode ipv6 esp $algo
	done
	for algo in $AH_AUTHENTICATION_ALGORITHMS; do
		add_test_transport_mode ipv4 ah $algo
		add_test_transport_mode ipv6 ah $algo
	done
}