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
|
#!/usr/bin/env python3
#
# Copyright (C) 2018-2022 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 vyos.config import Config
from vyos.configdict import get_accel_dict
from vyos.configdict import dict_merge
from vyos.configverify import verify_accel_ppp_base_service
from vyos.pki import wrap_certificate
from vyos.pki import wrap_private_key
from vyos.template import render
from vyos.util import call
from vyos.util import dict_search
from vyos.util import write_file
from vyos.xml import defaults
from vyos import ConfigError
from vyos import airbag
airbag.enable()
cfg_dir = '/run/accel-pppd'
sstp_conf = '/run/accel-pppd/sstp.conf'
sstp_chap_secrets = '/run/accel-pppd/sstp.chap-secrets'
cert_file_path = os.path.join(cfg_dir, 'sstp-cert.pem')
cert_key_path = os.path.join(cfg_dir, 'sstp-cert.key')
ca_cert_file_path = os.path.join(cfg_dir, 'sstp-ca.pem')
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['vpn', 'sstp']
if not conf.exists(base):
return None
# retrieve common dictionary keys
sstp = get_accel_dict(conf, base, sstp_chap_secrets)
default_values = defaults(base)
sstp = dict_merge(default_values, sstp)
# workaround a "know limitation" - https://phabricator.vyos.net/T2665
del sstp['authentication']['local_users']['username']['static_ip']
if sstp:
sstp['pki'] = conf.get_config_dict(['pki'], key_mangling=('-', '_'),
get_first_key=True, no_tag_node_value_mangle=True)
return sstp
def verify(sstp):
if not sstp:
return None
verify_accel_ppp_base_service(sstp)
if 'client_ip_pool' not in sstp and 'client_ipv6_pool' not in sstp:
raise ConfigError('Client IP subnet required')
#
# SSL certificate checks
#
if not sstp['pki']:
raise ConfigError('PKI is not configured')
if 'ssl' not in sstp:
raise ConfigError('SSL missing on SSTP config')
ssl = sstp['ssl']
# CA
if 'ca_certificate' not in ssl:
raise ConfigError('SSL CA certificate missing on SSTP config')
ca_name = ssl['ca_certificate']
if ca_name not in sstp['pki']['ca']:
raise ConfigError('Invalid CA certificate on SSTP config')
if 'certificate' not in sstp['pki']['ca'][ca_name]:
raise ConfigError('Missing certificate data for CA certificate on SSTP config')
# Certificate
if 'certificate' not in ssl:
raise ConfigError('SSL certificate missing on SSTP config')
cert_name = ssl['certificate']
if cert_name not in sstp['pki']['certificate']:
raise ConfigError('Invalid certificate on SSTP config')
pki_cert = sstp['pki']['certificate'][cert_name]
if 'certificate' not in pki_cert:
raise ConfigError('Missing certificate data for certificate on SSTP config')
if 'private' not in pki_cert or 'key' not in pki_cert['private']:
raise ConfigError('Missing private key for certificate on SSTP config')
if 'password_protected' in pki_cert['private']:
raise ConfigError('Encrypted private key is not supported on SSTP config')
def generate(sstp):
if not sstp:
return None
# accel-cmd reload doesn't work so any change results in a restart of the daemon
render(sstp_conf, 'accel-ppp/sstp.config.j2', sstp)
cert_name = sstp['ssl']['certificate']
pki_cert = sstp['pki']['certificate'][cert_name]
ca_cert_name = sstp['ssl']['ca_certificate']
pki_ca = sstp['pki']['ca'][ca_cert_name]
write_file(cert_file_path, wrap_certificate(pki_cert['certificate']))
write_file(cert_key_path, wrap_private_key(pki_cert['private']['key']))
write_file(ca_cert_file_path, wrap_certificate(pki_ca['certificate']))
if dict_search('authentication.mode', sstp) == 'local':
render(sstp_chap_secrets, 'accel-ppp/chap-secrets.config_dict.j2',
sstp, permission=0o640)
else:
if os.path.exists(sstp_chap_secrets):
os.unlink(sstp_chap_secrets)
return sstp
def apply(sstp):
if not sstp:
call('systemctl stop accel-ppp@sstp.service')
for file in [sstp_chap_secrets, sstp_conf]:
if os.path.exists(file):
os.unlink(file)
return None
call('systemctl restart accel-ppp@sstp.service')
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)
|
