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
|
#!/usr/bin/env python3
#
# Copyright (C) 2018-2021 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 os
from sys import exit
from psutil import process_iter
from vyos.config import Config
from vyos.configdict import dict_merge
from vyos.template import render
from vyos.util import call
from vyos.xml import defaults
from vyos import ConfigError
config_file = '/run/conserver/conserver.cf'
dropbear_systemd_file = '/etc/systemd/system/dropbear@{port}.service.d/override.conf'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['service', 'console-server']
# Retrieve CLI representation as dictionary
proxy = conf.get_config_dict(base, key_mangling=('-', '_'),
get_first_key=True)
# The retrieved dictionary will look something like this:
#
# {'device': {'usb0b2.4p1.0': {'speed': '9600'},
# 'usb0b2.4p1.1': {'data_bits': '8',
# 'parity': 'none',
# 'speed': '115200',
# 'stop_bits': '2'}}}
# We have gathered the dict representation of the CLI, but there are default
# options which we need to update into the dictionary retrived.
default_values = defaults(base + ['device'])
if 'device' in proxy:
for device in proxy['device']:
tmp = dict_merge(default_values, proxy['device'][device])
proxy['device'][device] = tmp
return proxy
def verify(proxy):
if not proxy:
return None
processes = process_iter(['name', 'cmdline'])
if 'device' in proxy:
for device, device_config in proxy['device'].items():
for process in processes:
if 'agetty' in process.name() and device in process.cmdline():
raise ConfigError(f'Port "{device}" already provides a '\
'console used by "system console"!')
if 'speed' not in device_config:
raise ConfigError(f'Port "{device}" requires speed to be set!')
if 'ssh' in device_config and 'port' not in device_config['ssh']:
raise ConfigError(f'Port "{device}" requires SSH port to be set!')
return None
def generate(proxy):
if not proxy:
return None
render(config_file, 'conserver/conserver.conf.tmpl', proxy)
if 'device' in proxy:
for device, device_config in proxy['device'].items():
if 'ssh' not in device_config:
continue
tmp = {
'device' : device,
'port' : device_config['ssh']['port'],
}
render(dropbear_systemd_file.format(**tmp),
'conserver/dropbear@.service.tmpl', tmp)
return None
def apply(proxy):
call('systemctl daemon-reload')
call('systemctl stop dropbear@*.service conserver-server.service')
if not proxy:
if os.path.isfile(config_file):
os.unlink(config_file)
return None
call('systemctl restart conserver-server.service')
if 'device' in proxy:
for device, device_config in proxy['device'].items():
if 'ssh' not in device_config:
continue
port = device_config['ssh']['port']
call(f'systemctl restart dropbear@{port}.service')
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)
|
