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
|
#!/usr/bin/env python3
#
# Copyright (C) 2018-2020 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
from sys import exit
from copy import deepcopy
from vyos.config import Config
from vyos.configdict import dict_merge
from vyos.configdict import get_interface_dict
from vyos.configdict import node_changed
from vyos.configdict import leaf_node_changed
from vyos.configverify import verify_vrf
from vyos.configverify import verify_address
from vyos.configverify import verify_bridge_delete
from vyos.ifconfig import WireGuardIf
from vyos.util import chown, chmod_750
from vyos.util import check_kmod
from vyos import ConfigError
from vyos import airbag
airbag.enable()
k_mod = 'wireguard'
def _migrate_default_keys():
kdir = r'/config/auth/wireguard'
if os.path.exists(f'{kdir}/private.key') and not os.path.exists(f'{kdir}/default/private.key'):
location = f'{kdir}/default'
if not os.path.exists(location):
os.makedirs(location)
chown(location, 'root', 'vyattacfg')
chmod_750(location)
os.rename(f'{kdir}/private.key', f'{location}/private.key')
os.rename(f'{kdir}/public.key', f'{location}/public.key')
def get_config():
"""
Retrive CLI config as dictionary. Dictionary can never be empty, as at least the
interface name will be added or a deleted flag
"""
conf = Config()
base = ['interfaces', 'wireguard']
wireguard = get_interface_dict(conf, base)
# Wireguard is "special" the default MTU is 1420 - update accordingly
# as the config_level is already st in get_interface_dict() - we can use []
tmp = conf.get_config_dict([], key_mangling=('-', '_'), get_first_key=True)
if 'mtu' not in tmp:
wireguard['mtu'] = '1420'
# Mangle private key - it has a default so its always valid
wireguard['private_key'] = '/config/auth/wireguard/{private_key}/private.key'.format(**wireguard)
# Determine which Wireguard peer has been removed.
# Peers can only be removed with their public key!
tmp = node_changed(conf, ['peer'])
if tmp:
dict = {}
for peer in tmp:
peer_config = leaf_node_changed(conf, ['peer', peer, 'pubkey'])
dict = dict_merge({'peer_remove' : {peer : {'pubkey' : peer_config}}}, dict)
wireguard.update(dict)
return wireguard
def verify(wireguard):
if 'deleted' in wireguard:
verify_bridge_delete(wireguard)
return None
verify_address(wireguard)
verify_vrf(wireguard)
if not os.path.exists(wireguard['private_key']):
raise ConfigError('Wireguard private-key not found! Execute: ' \
'"run generate wireguard [default-keypair|named-keypairs]"')
if 'address' not in wireguard:
raise ConfigError('IP address required!')
if 'peer' not in wireguard:
raise ConfigError('At least one Wireguard peer is required!')
# run checks on individual configured WireGuard peer
for tmp in wireguard['peer']:
peer = wireguard['peer'][tmp]
if 'allowed_ips' not in peer:
raise ConfigError(f'Wireguard allowed-ips required for peer "{tmp}"!')
if 'pubkey' not in peer:
raise ConfigError(f'Wireguard public-key required for peer "{tmp}"!')
if ('address' in peer and 'port' not in peer) or ('port' in peer and 'address' not in peer):
raise ConfigError('Both Wireguard port and address must be defined '
f'for peer "{tmp}" if either one of them is set!')
def apply(wireguard):
if 'deleted' in wireguard:
WireGuardIf(wireguard['ifname']).remove()
return None
w = WireGuardIf(wireguard['ifname'])
w.update(wireguard)
return None
if __name__ == '__main__':
try:
check_kmod(k_mod)
_migrate_default_keys()
c = get_config()
verify(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)
|
