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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
#!/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 unittest
from ipaddress import IPv4Network
from netifaces import interfaces
from vyos.configsession import ConfigSession
from vyos.configsession import ConfigSessionError
from vyos.util import cmd
from vyos.util import process_named_running
from vyos.util import read_file
PROCESS_NAME = 'openvpn'
base_path = ['interfaces', 'openvpn']
ca_cert = '/config/auth/ovpn_test_ca.pem'
ssl_cert = '/config/auth/ovpn_test_server.pem'
ssl_key = '/config/auth/ovpn_test_server.key'
dh_pem = '/config/auth/ovpn_test_dh.pem'
s2s_key = '/config/auth/ovpn_test_site2site.key'
remote_port = '1194'
protocol = 'udp'
path = []
interface = ''
remote_host = ''
class TestInterfacesOpenVPN(unittest.TestCase):
def setUp(self):
self.session = ConfigSession(os.getpid())
self.session.set(['interfaces', 'dummy', 'dum1328', 'address', '192.0.2.1/24'])
def tearDown(self):
self.session.delete(base_path)
self.session.delete(['interfaces', 'dummy', 'dum1328'])
self.session.commit()
del self.session
def test_client_interfaces(self):
""" Create two OpenVPN client interfaces connecting to different
server IP addresses. Validate configuration afterwards. """
num_range = range(10, 12)
for ii in num_range:
interface = f'vtun{ii}'
remote_host = f'192.0.2.{ii}'
path = base_path + [interface]
auth_hash = 'sha1'
self.session.set(path + ['device-type', 'tun'])
self.session.set(path + ['encryption', 'cipher', 'aes256'])
self.session.set(path + ['hash', auth_hash])
self.session.set(path + ['mode', 'client'])
self.session.set(path + ['persistent-tunnel'])
self.session.set(path + ['protocol', protocol])
self.session.set(path + ['remote-host', remote_host])
self.session.set(path + ['remote-port', remote_port])
self.session.set(path + ['tls', 'ca-cert-file', ca_cert])
self.session.set(path + ['tls', 'cert-file', ssl_cert])
self.session.set(path + ['tls', 'key-file', ssl_key])
self.session.commit()
for ii in num_range:
config_file = f'/run/openvpn/{interface}.conf'
config = read_file(config_file)
self.assertIn(f'dev {interface}', config)
self.assertIn(f'dev-type tun', config)
self.assertIn(f'persist-key', config)
self.assertIn(f'proto {protocol}', config)
self.assertIn(f'rport {remote_port}', config)
self.assertIn(f'remote {remote_host}', config)
self.assertIn(f'persist-tun', config)
self.assertIn(f'auth {auth_hash}', config)
self.assertIn(f'cipher aes-256-cbc', config)
# TLS options
self.assertIn(f'ca {ca_cert}', config)
self.assertIn(f'cert {ssl_cert}', config)
self.assertIn(f'key {ssl_key}', config)
self.assertTrue(process_named_running(PROCESS_NAME))
self.assertIn(interface, interfaces())
def test_server_interfaces(self):
""" Create two OpenVPN server interfaces using different client subnets.
Validate configuration afterwards. """
auth_hash = 'sha256'
num_range = range(20, 22)
port = ''
for ii in num_range:
interface = f'vtun{ii}'
subnet = f'192.0.{ii}.0/24'
path = base_path + [interface]
port = str(2000 + ii)
self.session.set(path + ['device-type', 'tun'])
self.session.set(path + ['encryption', 'cipher', 'aes192'])
self.session.set(path + ['hash', auth_hash])
self.session.set(path + ['mode', 'server'])
self.session.set(path + ['local-port', port])
self.session.set(path + ['server', 'subnet', subnet])
self.session.set(path + ['tls', 'ca-cert-file', ca_cert])
self.session.set(path + ['tls', 'cert-file', ssl_cert])
self.session.set(path + ['tls', 'key-file', ssl_key])
self.session.set(path + ['tls', 'dh-file', dh_pem])
self.session.commit()
for ii in num_range:
config_file = f'/run/openvpn/{interface}.conf'
config = read_file(config_file)
self.assertIn(f'dev {interface}', config)
self.assertIn(f'dev-type tun', config)
self.assertIn(f'persist-key', config)
self.assertIn(f'proto udp', config) # default protocol
self.assertIn(f'auth {auth_hash}', config)
self.assertIn(f'cipher aes-192-cbc', config)
self.assertIn(f'topology net30', config)
self.assertIn(f'lport {port}', config)
# TLS options
self.assertIn(f'ca {ca_cert}', config)
self.assertIn(f'cert {ssl_cert}', config)
self.assertIn(f'key {ssl_key}', config)
self.assertIn(f'dh {dh_pem}', config)
# IP pool configuration
netmask = IPv4Network(subnet).netmask
network = IPv4Network(subnet).network_address
self.assertIn(f'server {network} {netmask} nopool', config)
self.assertTrue(process_named_running(PROCESS_NAME))
self.assertIn(interface, interfaces())
def test_site2site_interfaces(self):
"""
"""
num_range = range(30, 32)
port = ''
local_address = ''
remote_address = ''
for ii in num_range:
interface = f'vtun{ii}'
local_address = f'192.0.{ii}.1'
remote_address = f'172.16.{ii}.1'
path = base_path + [interface]
port = str(3000 + ii)
self.session.set(path + ['mode', 'site-to-site'])
self.session.set(path + ['local-port', port])
self.session.set(path + ['local-address', local_address])
self.session.set(path + ['remote-port', port])
self.session.set(path + ['shared-secret-key-file', s2s_key])
self.session.set(path + ['remote-address', remote_address])
self.session.commit()
for ii in num_range:
config_file = f'/run/openvpn/{interface}.conf'
config = read_file(config_file)
self.assertIn(f'dev {interface}', config)
self.assertIn(f'dev-type tun', config)
self.assertIn(f'secret {s2s_key}', config)
self.assertIn(f'lport {port}', config)
self.assertIn(f'rport {port}', config)
self.assertIn(f'ifconfig {local_address} {remote_address}', config)
self.assertTrue(process_named_running(PROCESS_NAME))
self.assertIn(interface, interfaces())
if __name__ == '__main__':
# Our SSL certificates need a subject ...
subject = '/C=DE/ST=BY/O=VyOS/localityName=Cloud/commonName=vyos/' \
'organizationalUnitName=VyOS/emailAddress=maintainers@vyos.io/'
if (not os.path.isfile(ssl_key) and not os.path.isfile(ssl_cert) and
not os.path.isfile(ca_cert) and not os.path.isfile(dh_pem) and
not os.path.isfile(s2s_key)):
# Generate mandatory SSL certificate
tmp = f'openssl req -newkey rsa:4096 -new -nodes -x509 -days 3650 '\
f'-keyout {ssl_key} -out {ssl_cert} -subj {subject}'
out = cmd(tmp)
print(out)
# Generate "CA"
tmp = f'openssl req -new -x509 -key {ssl_key} -out {ca_cert} -subj {subject}'
out = cmd(tmp)
print(out)
# Generate "DH" key
tmp = f'openssl dhparam -out {dh_pem} 2048'
out = cmd(tmp)
print(out)
# Generate site-2-site key
tmp = f'openvpn --genkey --secret {s2s_key}'
out = cmd(tmp)
print(out)
for file in [ca_cert, ssl_cert, ssl_key, dh_pem, s2s_key]:
cmd(f'sudo chown openvpn:openvpn {file}')
unittest.main()
|
