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#!/usr/bin/env python3
#
# Copyright (C) 2023 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 re
import sys
import typing
import vyos.opmode
from copy import deepcopy
from tabulate import tabulate
from vyos.utils.process import popen
from vyos.configquery import ConfigTreeQuery
def _verify(func):
"""Decorator checks if Wireless LAN config exists"""
from functools import wraps
@wraps(func)
def _wrapper(*args, **kwargs):
config = ConfigTreeQuery()
if not config.exists(['interfaces', 'wireless']):
raise vyos.opmode.UnconfiguredSubsystem(unconf_message)
return func(*args, **kwargs)
return _wrapper
def _get_raw_info_data():
output_data = []
config = ConfigTreeQuery()
raw = config.get_config_dict(['interfaces', 'wireless'], effective=True,
get_first_key=True, key_mangling=('-', '_'))
for interface, interface_config in raw.items():
tmp = {'name' : interface}
if 'type' in interface_config:
tmp.update({'type' : interface_config['type']})
else:
tmp.update({'type' : '-'})
if 'ssid' in interface_config:
tmp.update({'ssid' : interface_config['ssid']})
else:
tmp.update({'ssid' : '-'})
if 'channel' in interface_config:
tmp.update({'channel' : interface_config['channel']})
else:
tmp.update({'channel' : '-'})
output_data.append(tmp)
return output_data
def _get_formatted_info_output(raw_data):
output=[]
for ssid in raw_data:
output.append([ssid['name'], ssid['type'], ssid['ssid'], ssid['channel']])
headers = ["Interface", "Type", "SSID", "Channel"]
print(tabulate(output, headers, numalign="left"))
def _get_raw_scan_data(intf_name):
# XXX: This ignores errors
tmp, _ = popen(f'iw dev {intf_name} scan ap-force')
networks = []
data = {
'ssid': '',
'mac': '',
'channel': '',
'signal': ''
}
re_mac = re.compile(r'([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})')
for line in tmp.splitlines():
if line.startswith('BSS '):
ssid = deepcopy(data)
ssid['mac'] = re.search(re_mac, line).group()
elif line.lstrip().startswith('SSID: '):
# SSID can be " SSID: WLAN-57 6405", thus strip all leading whitespaces
ssid['ssid'] = line.lstrip().split(':')[-1].lstrip()
elif line.lstrip().startswith('signal: '):
# Siganl can be " signal: -67.00 dBm", thus strip all leading whitespaces
ssid['signal'] = line.lstrip().split(':')[-1].split()[0]
elif line.lstrip().startswith('DS Parameter set: channel'):
# Channel can be " DS Parameter set: channel 6" , thus
# strip all leading whitespaces
ssid['channel'] = line.lstrip().split(':')[-1].split()[-1]
networks.append(ssid)
continue
return networks
def _format_scan_data(raw_data):
output=[]
for ssid in raw_data:
output.append([ssid['mac'], ssid['ssid'], ssid['channel'], ssid['signal']])
headers = ["Address", "SSID", "Channel", "Signal (dbm)"]
return tabulate(output, headers, numalign="left")
def _get_raw_station_data(intf_name):
# XXX: This ignores errors
tmp, _ = popen(f'iw dev {intf_name} station dump')
clients = []
data = {
'mac': '',
'signal': '',
'rx_bytes': '',
'rx_packets': '',
'tx_bytes': '',
'tx_packets': ''
}
re_mac = re.compile(r'([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})')
for line in tmp.splitlines():
if line.startswith('Station'):
client = deepcopy(data)
client['mac'] = re.search(re_mac, line).group()
elif line.lstrip().startswith('signal avg:'):
client['signal'] = line.lstrip().split(':')[-1].lstrip().split()[0]
elif line.lstrip().startswith('rx bytes:'):
client['rx_bytes'] = line.lstrip().split(':')[-1].lstrip()
elif line.lstrip().startswith('rx packets:'):
client['rx_packets'] = line.lstrip().split(':')[-1].lstrip()
elif line.lstrip().startswith('tx bytes:'):
client['tx_bytes'] = line.lstrip().split(':')[-1].lstrip()
elif line.lstrip().startswith('tx packets:'):
client['tx_packets'] = line.lstrip().split(':')[-1].lstrip()
clients.append(client)
continue
return clients
def _format_station_data(raw_data):
output=[]
for ssid in raw_data:
output.append([ssid['mac'], ssid['signal'], ssid['rx_bytes'], ssid['rx_packets'], ssid['tx_bytes'], ssid['tx_packets']])
headers = ["Station", "Signal", "RX bytes", "RX packets", "TX bytes", "TX packets"]
return tabulate(output, headers, numalign="left")
@_verify
def show_info(raw: bool):
info_data = _get_raw_info_data()
if raw:
return info_data
return _get_formatted_info_output(info_data)
def show_scan(raw: bool, intf_name: str):
data = _get_raw_scan_data(intf_name)
if raw:
return data
return _format_scan_data(data)
@_verify
def show_stations(raw: bool, intf_name: str):
data = _get_raw_station_data(intf_name)
if raw:
return data
return _format_station_data(data)
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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