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show_wireless.py
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#!/usr/bin/env python3
#
# Copyright (C) 2019 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 argparse
import re
from sys import exit
from copy import deepcopy
from vyos.config import Config
from vyos.util import popen
parser = argparse.ArgumentParser()
parser.add_argument("-s", "--scan", help="Scan for Wireless APs on given interface, e.g. 'wlan0'")
parser.add_argument("-b", "--brief", action="store_true", help="Show wireless configuration")
parser.add_argument("-c", "--stations", help="Show wireless clients connected on interface, e.g. 'wlan0'")
def show_brief():
config = Config()
if len(config.list_effective_nodes('interfaces wireless')) == 0:
print("No Wireless interfaces configured")
exit(0)
interfaces = []
for intf in config.list_effective_nodes('interfaces wireless'):
config.set_level(f'interfaces wireless {intf}')
data = { 'name': intf }
data['type'] = config.return_effective_value('type') or '-'
data['ssid'] = config.return_effective_value('ssid') or '-'
data['channel'] = config.return_effective_value('channel') or '-'
interfaces.append(data)
return interfaces
def ssid_scan(intf):
# XXX: This ignores errors
tmp, _ = popen(f'/sbin/iw dev {intf} 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 show_clients(intf):
# XXX: This ignores errors
tmp, _ = popen(f'/sbin/iw dev {intf} 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
if __name__ == '__main__':
args = parser.parse_args()
if args.scan:
print("Address SSID Channel Signal (dbm)")
for network in ssid_scan(args.scan):
print("{:<17} {:<32} {:>3} {}".format(network['mac'],
network['ssid'],
network['channel'],
network['signal']))
exit(0)
elif args.brief:
print("Interface Type SSID Channel")
for intf in show_brief():
print("{:<9} {:<12} {:<32} {:>3}".format(intf['name'],
intf['type'],
intf['ssid'],
intf['channel']))
exit(0)
elif args.stations:
print("Station Signal RX: bytes packets TX: bytes packets")
for client in show_clients(args.stations):
print("{:<17} {:>3} {:>15} {:>9} {:>15} {:>10} ".format(client['mac'],
client['signal'], client['rx_bytes'], client['rx_packets'], client['tx_bytes'], client['tx_packets']))
exit(0)
else:
parser.print_help()
exit(1)

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