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
|
#!/usr/bin/env python3
#
# Copyright (C) 2019-2021 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 re
import unittest
from base_vyostest_shim import VyOSUnitTestSHIM
from vyos.configsession import ConfigSessionError
from vyos.template import is_ipv4
from vyos.template import address_from_cidr
from vyos.util import call
from vyos.util import DEVNULL
from vyos.util import read_file
from vyos.util import process_named_running
from vyos.version import get_version_data
PROCESS_NAME = 'snmpd'
SNMPD_CONF = '/etc/snmp/snmpd.conf'
base_path = ['service', 'snmp']
snmpv3_group = 'default_group'
snmpv3_view = 'default_view'
snmpv3_view_oid = '1'
snmpv3_user = 'vyos'
snmpv3_auth_pw = 'vyos12345678'
snmpv3_priv_pw = 'vyos87654321'
snmpv3_engine_id = '000000000000000000000002'
def get_config_value(key):
tmp = read_file(SNMPD_CONF)
tmp = re.findall(r'\n?{}\s+(.*)'.format(key), tmp)
return tmp[0]
class TestSNMPService(VyOSUnitTestSHIM.TestCase):
@classmethod
def setUpClass(cls):
super(TestSNMPService, 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):
# Check for running process
self.assertTrue(process_named_running(PROCESS_NAME))
# delete testing SNMP config
self.cli_delete(base_path)
self.cli_commit()
# Check for running process
self.assertFalse(process_named_running(PROCESS_NAME))
def test_snmp_basic(self):
dummy_if = 'dum7312'
dummy_addr = '100.64.0.1/32'
contact = 'maintainers@vyos.io'
location = 'QEMU'
self.cli_set(['interfaces', 'dummy', dummy_if, 'address', dummy_addr])
# Check if SNMP can be configured and service runs
clients = ['192.0.2.1', '2001:db8::1']
networks = ['192.0.2.128/25', '2001:db8:babe::/48']
listen = ['127.0.0.1', '::1', address_from_cidr(dummy_addr)]
port = '5000'
for auth in ['ro', 'rw']:
community = 'VyOS' + auth
self.cli_set(base_path + ['community', community, 'authorization', auth])
for client in clients:
self.cli_set(base_path + ['community', community, 'client', client])
for network in networks:
self.cli_set(base_path + ['community', community, 'network', network])
for addr in listen:
self.cli_set(base_path + ['listen-address', addr, 'port', port])
self.cli_set(base_path + ['contact', contact])
self.cli_set(base_path + ['location', location])
self.cli_commit()
# verify listen address, it will be returned as
# ['unix:/run/snmpd.socket,udp:127.0.0.1:161,udp6:[::1]:161']
# thus we need to transfor this into a proper list
config = get_config_value('agentaddress')
expected = 'unix:/run/snmpd.socket'
self.assertIn(expected, config)
for addr in listen:
if is_ipv4(addr):
expected = f'udp:{addr}:{port}'
else:
expected = f'udp6:[{addr}]:{port}'
self.assertIn(expected, config)
config = get_config_value('sysDescr')
version_data = get_version_data()
self.assertEqual('VyOS ' + version_data['version'], config)
config = get_config_value('SysContact')
self.assertEqual(contact, config)
config = get_config_value('SysLocation')
self.assertEqual(location, config)
# Check for running process
self.assertTrue(process_named_running(PROCESS_NAME))
self.cli_delete(['interfaces', 'dummy', dummy_if])
def test_snmpv3_sha(self):
# Check if SNMPv3 can be configured with SHA authentication
# and service runs
self.cli_set(base_path + ['v3', 'engineid', snmpv3_engine_id])
self.cli_set(base_path + ['v3', 'group', 'default', 'mode', 'ro'])
# check validate() - a view must be created before this can be committed
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(base_path + ['v3', 'view', 'default', 'oid', '1'])
self.cli_set(base_path + ['v3', 'group', 'default', 'view', 'default'])
# create user
self.cli_set(base_path + ['v3', 'user', snmpv3_user, 'auth', 'plaintext-password', snmpv3_auth_pw])
self.cli_set(base_path + ['v3', 'user', snmpv3_user, 'auth', 'type', 'sha'])
self.cli_set(base_path + ['v3', 'user', snmpv3_user, 'privacy', 'plaintext-password', snmpv3_priv_pw])
self.cli_set(base_path + ['v3', 'user', snmpv3_user, 'privacy', 'type', 'aes'])
self.cli_set(base_path + ['v3', 'user', snmpv3_user, 'group', 'default'])
self.cli_commit()
# commit will alter the CLI values - check if they have been updated:
hashed_password = '4e52fe55fd011c9c51ae2c65f4b78ca93dcafdfe'
tmp = self._session.show_config(base_path + ['v3', 'user', snmpv3_user, 'auth', 'encrypted-password']).split()[1]
self.assertEqual(tmp, hashed_password)
hashed_password = '54705c8de9e81fdf61ad7ac044fa8fe611ddff6b'
tmp = self._session.show_config(base_path + ['v3', 'user', snmpv3_user, 'privacy', 'encrypted-password']).split()[1]
self.assertEqual(tmp, hashed_password)
# TODO: read in config file and check values
# Try SNMPv3 connection
tmp = call(f'snmpwalk -v 3 -u {snmpv3_user} -a SHA -A {snmpv3_auth_pw} -x AES -X {snmpv3_priv_pw} -l authPriv 127.0.0.1', stdout=DEVNULL)
self.assertEqual(tmp, 0)
def test_snmpv3_md5(self):
# Check if SNMPv3 can be configured with MD5 authentication
# and service runs
self.cli_set(base_path + ['v3', 'engineid', snmpv3_engine_id])
# create user
self.cli_set(base_path + ['v3', 'user', snmpv3_user, 'auth', 'plaintext-password', snmpv3_auth_pw])
self.cli_set(base_path + ['v3', 'user', snmpv3_user, 'auth', 'type', 'md5'])
self.cli_set(base_path + ['v3', 'user', snmpv3_user, 'privacy', 'plaintext-password', snmpv3_priv_pw])
self.cli_set(base_path + ['v3', 'user', snmpv3_user, 'privacy', 'type', 'des'])
# check validate() - user requires a group to be created
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(base_path + ['v3', 'user', 'vyos', 'group', snmpv3_group])
self.cli_set(base_path + ['v3', 'group', snmpv3_group, 'mode', 'ro'])
# check validate() - a view must be created before this can be comitted
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(base_path + ['v3', 'view', snmpv3_view, 'oid', snmpv3_view_oid])
self.cli_set(base_path + ['v3', 'group', snmpv3_group, 'view', snmpv3_view])
self.cli_commit()
# commit will alter the CLI values - check if they have been updated:
hashed_password = '4c67690d45d3dfcd33d0d7e308e370ad'
tmp = self._session.show_config(base_path + ['v3', 'user', 'vyos', 'auth', 'encrypted-password']).split()[1]
self.assertEqual(tmp, hashed_password)
hashed_password = 'e11c83f2c510540a3c4de84ee66de440'
tmp = self._session.show_config(base_path + ['v3', 'user', 'vyos', 'privacy', 'encrypted-password']).split()[1]
self.assertEqual(tmp, hashed_password)
tmp = read_file(SNMPD_CONF)
# views
self.assertIn(f'view {snmpv3_view} included .{snmpv3_view_oid}', tmp)
# group
self.assertIn(f'group {snmpv3_group} usm {snmpv3_user}', tmp)
# access
self.assertIn(f'access {snmpv3_group} "" usm auth exact {snmpv3_view} none none', tmp)
# Try SNMPv3 connection
tmp = call(f'snmpwalk -v 3 -u {snmpv3_user} -a MD5 -A {snmpv3_auth_pw} -x DES -X {snmpv3_priv_pw} -l authPriv 127.0.0.1', stdout=DEVNULL)
self.assertEqual(tmp, 0)
if __name__ == '__main__':
unittest.main(verbosity=2)
|
