Merge pull request #2373 from c-po/t4913-wifi-op-mode

T4913: migrate wireless scripts to new op-mode style

1 files changed, 186 insertions, 0 deletions

diff --git a/src/op_mode/interfaces_wireless.py b/src/op_mode/interfaces_wireless.py
new file mode 100755
index 000000000..dfe50e2cb
--- /dev/null
+++ b/src/op_mode/interfaces_wireless.py
@@ -0,0 +1,186 @@
+#!/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)