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
|
#!/usr/bin/env python3
#
# Copyright (C) 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 base64
import os
import re
import struct
import sys
import argparse
from subprocess import TimeoutExpired
from vyos.util import ask_yes_no, call, cmd, process_named_running
from Crypto.PublicKey.RSA import importKey
RSA_LOCAL_KEY_PATH = '/config/ipsec.d/rsa-keys/localhost.key'
RSA_LOCAL_PUB_PATH = '/etc/ipsec.d/certs/localhost.pub'
RSA_KEY_PATHS = ['/config/auth', '/config/ipsec.d/rsa-keys']
X509_CONFIG_PATH = '/etc/ipsec.d/key-pair.template'
X509_PATH = '/config/auth/'
IPSEC_CONF = '/etc/ipsec.conf'
SWANCTL_CONF = '/etc/swanctl.conf'
def migrate_to_vyatta_key(path):
with open(path, 'r') as f:
key = importKey(f.read())
e = key.e.to_bytes((key.e.bit_length() + 7) // 8, 'big')
n = key.n.to_bytes((key.n.bit_length() + 7) // 8, 'big')
return '0s' + str(base64.b64encode(struct.pack('B', len(e)) + e + n), 'ascii')
return None
def find_rsa_keys():
keys = []
for path in RSA_KEY_PATHS:
if not os.path.exists(path):
continue
for filename in os.listdir(path):
full_path = os.path.join(path, filename)
if os.path.isfile(full_path) and full_path.endswith(".key"):
keys.append(full_path)
return keys
def show_rsa_keys():
for key_path in find_rsa_keys():
print('Private key: ' + os.path.basename(key_path))
print('Public key: ' + migrate_to_vyatta_key(key_path) + '\n')
def generate_rsa_key(bits = 2192):
if (bits < 16 or bits > 4096) or bits % 16 != 0:
print('Invalid bit length')
return
if os.path.exists(RSA_LOCAL_KEY_PATH):
if not ask_yes_no("A local RSA key file already exists and will be overwritten. Continue?"):
return
print(f'Generating rsa-key to {RSA_LOCAL_KEY_PATH}')
directory = os.path.dirname(RSA_LOCAL_KEY_PATH)
call(f'sudo mkdir -p {directory}')
result = call(f'sudo /usr/bin/openssl genrsa -out {RSA_LOCAL_KEY_PATH} {bits}')
if result != 0:
print(f'Could not generate RSA key: {result}')
return
call(f'sudo /usr/bin/openssl rsa -inform PEM -in {RSA_LOCAL_KEY_PATH} -pubout -out {RSA_LOCAL_PUB_PATH}')
print('Your new local RSA key has been generated')
print('The public portion of the key is:\n')
print(migrate_to_vyatta_key(RSA_LOCAL_KEY_PATH))
def generate_x509_pair(name):
if os.path.exists(X509_PATH + name):
if not ask_yes_no("A certificate request with this name already exists and will be overwritten. Continue?"):
return
result = os.system(f'openssl req -new -nodes -keyout {X509_PATH}{name}.key -out {X509_PATH}{name}.csr -config {X509_CONFIG_PATH}')
if result != 0:
print(f'Could not generate x509 key-pair: {result}')
return
print('Private key and certificate request has been generated')
print(f'CSR: {X509_PATH}{name}.csr')
print(f'Private key: {X509_PATH}{name}.key')
def get_peer_connections(peer, tunnel, return_all = False):
search = rf'^conn (peer-{peer}-(tunnel-[\d]+|vti))$'
matches = []
with open(IPSEC_CONF, 'r') as f:
for line in f.readlines():
result = re.match(search, line)
if result:
suffix = f'tunnel-{tunnel}' if tunnel.isnumeric() else tunnel
if return_all or (result[2] == suffix):
matches.append(result[1])
return matches
def reset_peer(peer, tunnel):
if not peer:
print('Invalid peer, aborting')
return
conns = get_peer_connections(peer, tunnel, return_all = (not tunnel or tunnel == 'all'))
if not conns:
print('Tunnel(s) not found, aborting')
return
result = True
for conn in conns:
try:
call(f'sudo /usr/sbin/ipsec down {conn}', timeout = 10)
call(f'sudo /usr/sbin/ipsec up {conn}', timeout = 10)
except TimeoutExpired as e:
print(f'Timed out while resetting {conn}')
result = False
print('Peer reset result: ' + ('success' if result else 'failed'))
def get_profile_connection(profile, tunnel = None):
search = rf'(dmvpn-{profile}-[\w]+)' if tunnel == 'all' else rf'(dmvpn-{profile}-{tunnel})'
with open(SWANCTL_CONF, 'r') as f:
for line in f.readlines():
result = re.search(search, line)
if result:
return result[1]
return None
def reset_profile(profile, tunnel):
if not profile:
print('Invalid profile, aborting')
return
if not tunnel:
print('Invalid tunnel, aborting')
return
conn = get_profile_connection(profile)
if not conn:
print('Profile not found, aborting')
return
call(f'sudo /usr/sbin/ipsec down {conn}')
result = call(f'sudo /usr/sbin/ipsec up {conn}')
print('Profile reset result: ' + ('success' if result == 0 else 'failed'))
def debug_peer(peer, tunnel):
if not peer or peer == "all":
call('sudo /usr/sbin/ipsec statusall')
return
if not tunnel or tunnel == 'all':
tunnel = ''
conn = get_peer_connection(peer, tunnel)
if not conn:
print('Peer not found, aborting')
return
call(f'sudo /usr/sbin/ipsec statusall | grep {conn}')
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('--action', help='Control action', required=True)
parser.add_argument('--bits', help='Bits for rsa-key', required=False)
parser.add_argument('--name', help='Name for x509 key-pair, peer for reset', required=False)
parser.add_argument('--tunnel', help='Specific tunnel of peer', required=False)
args = parser.parse_args()
if args.action == 'rsa-key':
bits = int(args.bits) if args.bits else 2192
generate_rsa_key(bits)
elif args.action == 'rsa-key-show':
show_rsa_keys()
elif args.action == 'x509':
if not args.name:
print('Invalid name for key-pair, aborting.')
sys.exit(0)
generate_x509_pair(args.name)
elif args.action == 'reset-peer':
reset_peer(args.name, args.tunnel)
elif args.action == "reset-profile":
reset_profile(args.name, args.tunnel)
elif args.action == "vpn-debug":
debug_peer(args.name, args.tunnel)
|
