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service_console-server.py
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service_console-server.py
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#!/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 vyos.config import Config
from vyos.configdict import dict_merge
from vyos.template import render
from vyos.util import call
from vyos import ConfigError
config_file = r'/run/conserver/conserver.cf'
# Default values are necessary until the implementation of T2588 is completed
default_values = {
'data_bits': '8',
'parity': 'none',
'stop_bits': '1'
}
def get_config():
conf = Config()
base = ['service', 'console-server']
if not conf.exists(base):
return None
# Retrieve CLI representation as dictionary
proxy = conf.get_config_dict(base, key_mangling=('-', '_'))
# 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.
for device in proxy['device'].keys():
tmp = dict_merge(default_values, proxy['device'][device])
proxy['device'][device] = tmp
return proxy
def verify(proxy):
if not proxy:
return None
for tmp in proxy['device']:
device = proxy['device'][tmp]
if not device['speed']:
raise ConfigError(f'Serial port speed must be defined for "{tmp}"!')
if 'ssh' in device.keys():
if 'port' not in device['ssh'].keys():
raise ConfigError(f'SSH port must be defined for "{tmp}"!')
return None
def generate(proxy):
if not proxy:
return None
render(config_file, 'conserver/conserver.conf.tmpl', proxy)
return None
def apply(proxy):
call('systemctl stop conserver-server.service')
call('systemctl stop dropbear@*.service')
if not proxy:
if os.path.isfile(config_file):
os.unlink(config_file)
return None
call('systemctl restart conserver-server.service')
for device in proxy['device']:
if 'ssh' in proxy['device'][device].keys():
call('systemctl restart dropbear@{device}.service')
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)

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