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#!/usr/bin/env python3
#
# Copyright (C) 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 sys
import vyos.accel_ppp
import vyos.opmode
from vyos.configquery import ConfigTreeQuery
from vyos.util import rc_cmd
accel_dict = {
'ipoe': {
'port': 2002,
'path': 'service ipoe-server',
'base_path': 'service ipoe-server'
},
'pppoe': {
'port': 2001,
'path': 'service pppoe-server',
'base_path': 'service pppoe-server'
},
'pptp': {
'port': 2003,
'path': 'vpn pptp',
'base_path': 'vpn pptp'
},
'l2tp': {
'port': 2004,
'path': 'vpn l2tp',
'base_path': 'vpn l2tp remote-access'
},
'sstp': {
'port': 2005,
'path': 'vpn sstp',
'base_path': 'vpn sstp'
}
}
def _get_config_settings(protocol):
'''Get config dict from VyOS configuration'''
conf = ConfigTreeQuery()
base_path = accel_dict[protocol]['base_path']
data = conf.get_config_dict(base_path,
key_mangling=('-', '_'),
get_first_key=True,
no_tag_node_value_mangle=True)
if conf.exists(f'{base_path} authentication local-users'):
# Delete sensitive data
del data['authentication']['local_users']
return {'config_option': data}
def _get_raw_statistics(accel_output, pattern, protocol):
return {
**vyos.accel_ppp.get_server_statistics(accel_output, pattern, sep=':'),
**_get_config_settings(protocol)
}
def _get_raw_sessions(port):
cmd_options = 'show sessions ifname,username,ip,ip6,ip6-dp,type,state,' \
'uptime-raw,calling-sid,called-sid,sid,comp,rx-bytes-raw,' \
'tx-bytes-raw,rx-pkts,tx-pkts'
output = vyos.accel_ppp.accel_cmd(port, cmd_options)
parsed_data: list[dict[str, str]] = vyos.accel_ppp.accel_out_parse(
output.splitlines())
return parsed_data
def _verify(func):
"""Decorator checks if accel-ppp protocol
ipoe/pppoe/pptp/l2tp/sstp is configured
for example:
service ipoe-server
vpn sstp
"""
from functools import wraps
@wraps(func)
def _wrapper(*args, **kwargs):
config = ConfigTreeQuery()
protocol_list = accel_dict.keys()
protocol = kwargs.get('protocol')
# unknown or incorrect protocol query
if protocol not in protocol_list:
unconf_message = f'unknown protocol "{protocol}"'
raise vyos.opmode.UnconfiguredSubsystem(unconf_message)
# Check if config does not exist
config_protocol_path = accel_dict[protocol]['path']
if not config.exists(config_protocol_path):
unconf_message = f'"{config_protocol_path}" is not configured'
raise vyos.opmode.UnconfiguredSubsystem(unconf_message)
return func(*args, **kwargs)
return _wrapper
@_verify
def show_statistics(raw: bool, protocol: str):
"""show accel-cmd statistics
CPU utilization and amount of sessions
protocol: ipoe/pppoe/ppptp/l2tp/sstp
"""
pattern = f'{protocol}:'
port = accel_dict[protocol]['port']
rc, output = rc_cmd(f'/usr/bin/accel-cmd -p {port} show stat')
if raw:
return _get_raw_statistics(output, pattern, protocol)
return output
@_verify
def show_sessions(raw: bool, protocol: str):
"""show accel-cmd sessions
protocol: ipoe/pppoe/ppptp/l2tp/sstp
"""
port = accel_dict[protocol]['port']
if raw:
return _get_raw_sessions(port)
return vyos.accel_ppp.accel_cmd(port,
'show sessions ifname,username,ip,ip6,ip6-dp,'
'calling-sid,rate-limit,state,uptime,rx-bytes,tx-bytes')
if __name__ == '__main__':
try:
res = vyos.opmode.run(sys.modules[__name__])
if res:
print(res)
except (ValueError, vyos.opmode.Error) as e:
print(e)
sys.exit(1)
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