1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
#!/usr/bin/env python3
#
# Copyright (C) 2020 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import jmespath
import json
import unittest
from base_vyostest_shim import VyOSUnitTestSHIM
from vyos.configsession import ConfigSession
from vyos.configsession import ConfigSessionError
from vyos.util import cmd
from vyos.util import dict_search
base_path = ['nat66']
src_path = base_path + ['source']
dst_path = base_path + ['destination']
class TestNAT66(VyOSUnitTestSHIM.TestCase):
@classmethod
def setUpClass(cls):
super(cls, cls).setUpClass()
# ensure we can also run this test on a live system - so lets clean
# out the current configuration :)
cls.cli_delete(cls, base_path)
def tearDown(self):
self.cli_delete(base_path)
self.cli_commit()
def test_source_nat66(self):
source_prefix = 'fc00::/64'
translation_prefix = 'fc01::/64'
self.cli_set(src_path + ['rule', '1', 'outbound-interface', 'eth1'])
self.cli_set(src_path + ['rule', '1', 'source', 'prefix', source_prefix])
self.cli_set(src_path + ['rule', '1', 'translation', 'address', translation_prefix])
# check validate() - outbound-interface must be defined
self.cli_commit()
tmp = cmd('sudo nft -j list table ip6 nat')
data_json = jmespath.search('nftables[?rule].rule[?chain]', json.loads(tmp))
for idx in range(0, len(data_json)):
data = data_json[idx]
self.assertEqual(data['chain'], 'POSTROUTING')
self.assertEqual(data['family'], 'ip6')
self.assertEqual(data['table'], 'nat')
iface = dict_search('match.right', data['expr'][0])
address = dict_search('match.right.prefix.addr', data['expr'][2])
mask = dict_search('match.right.prefix.len', data['expr'][2])
translation_address = dict_search('snat.addr.prefix.addr', data['expr'][3])
translation_mask = dict_search('snat.addr.prefix.len', data['expr'][3])
self.assertEqual(iface, 'eth1')
# check for translation address
self.assertEqual(f'{translation_address}/{translation_mask}', translation_prefix)
self.assertEqual(f'{address}/{mask}', source_prefix)
def test_source_nat66_address(self):
source_prefix = 'fc00::/64'
translation_address = 'fc00::1'
self.cli_set(src_path + ['rule', '1', 'outbound-interface', 'eth1'])
self.cli_set(src_path + ['rule', '1', 'source', 'prefix', source_prefix])
self.cli_set(src_path + ['rule', '1', 'translation', 'address', translation_address])
# check validate() - outbound-interface must be defined
self.cli_commit()
tmp = cmd('sudo nft -j list table ip6 nat')
data_json = jmespath.search('nftables[?rule].rule[?chain]', json.loads(tmp))
for idx in range(0, len(data_json)):
data = data_json[idx]
self.assertEqual(data['chain'], 'POSTROUTING')
self.assertEqual(data['family'], 'ip6')
self.assertEqual(data['table'], 'nat')
iface = dict_search('match.right', data['expr'][0])
address = dict_search('match.right.prefix.addr', data['expr'][2])
mask = dict_search('match.right.prefix.len', data['expr'][2])
snat_address = dict_search('snat.addr', data['expr'][3])
self.assertEqual(iface, 'eth1')
# check for translation address
self.assertEqual(snat_address, translation_address)
self.assertEqual(f'{address}/{mask}', source_prefix)
def test_destination_nat66(self):
destination_address = 'fc00::1'
translation_address = 'fc01::1'
self.cli_set(dst_path + ['rule', '1', 'inbound-interface', 'eth1'])
self.cli_set(dst_path + ['rule', '1', 'destination', 'address', destination_address])
self.cli_set(dst_path + ['rule', '1', 'translation', 'address', translation_address])
# check validate() - outbound-interface must be defined
self.cli_commit()
tmp = cmd('sudo nft -j list table ip6 nat')
data_json = jmespath.search('nftables[?rule].rule[?chain]', json.loads(tmp))
for idx in range(0, len(data_json)):
data = data_json[idx]
self.assertEqual(data['chain'], 'PREROUTING')
self.assertEqual(data['family'], 'ip6')
self.assertEqual(data['table'], 'nat')
iface = dict_search('match.right', data['expr'][0])
dnat_addr = dict_search('dnat.addr', data['expr'][3])
self.assertEqual(dnat_addr, translation_address)
self.assertEqual(iface, 'eth1')
def test_destination_nat66_prefix(self):
destination_prefix = 'fc00::/64'
translation_prefix = 'fc01::/64'
self.cli_set(dst_path + ['rule', '1', 'inbound-interface', 'eth1'])
self.cli_set(dst_path + ['rule', '1', 'destination', 'address', destination_prefix])
self.cli_set(dst_path + ['rule', '1', 'translation', 'address', translation_prefix])
# check validate() - outbound-interface must be defined
self.cli_commit()
tmp = cmd('sudo nft -j list table ip6 nat')
data_json = jmespath.search('nftables[?rule].rule[?chain]', json.loads(tmp))
for idx in range(0, len(data_json)):
data = data_json[idx]
self.assertEqual(data['chain'], 'PREROUTING')
self.assertEqual(data['family'], 'ip6')
self.assertEqual(data['table'], 'nat')
iface = dict_search('match.right', data['expr'][0])
translation_address = dict_search('dnat.addr.prefix.addr', data['expr'][3])
translation_mask = dict_search('dnat.addr.prefix.len', data['expr'][3])
self.assertEqual(f'{translation_address}/{translation_mask}', translation_prefix)
self.assertEqual(iface, 'eth1')
def test_source_nat66_required_translation_prefix(self):
# T2813: Ensure translation address is specified
rule = '5'
source_prefix = 'fc00::/64'
self.cli_set(src_path + ['rule', rule, 'source', 'prefix', source_prefix])
# check validate() - outbound-interface must be defined
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(src_path + ['rule', rule, 'outbound-interface', 'eth0'])
# check validate() - translation address not specified
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(src_path + ['rule', rule, 'translation', 'address', 'masquerade'])
self.cli_commit()
def test_nat66_no_rules(self):
# T3206: deleting all rules but keep the direction 'destination' or
# 'source' resulteds in KeyError: 'rule'.
#
# Test that both 'nat destination' and 'nat source' nodes can exist
# without any rule
self.cli_set(src_path)
self.cli_set(dst_path)
self.cli_commit()
if __name__ == '__main__':
unittest.main(verbosity=2, failfast=True)
|
