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[feature] OpenWRT: extract associated WiFi stations

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#66 0 comentarios 0 reacciones 0 asignados Ver en GitHub

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Evaluación

Dificultad
5/5
Tiempo estimado
Más de una semana
Aptitud para principiantes
25/100
Tipo de issue
Nueva funcionalidad
Claridad
Necesita aclaración
Estado de actividad
Estancado
Stack tecnológico
python, shell
Área
networking, operating-systems

Línea de trabajo

Revisa los puntos de entrada de OpenWRT propuestos en /tmp/test y /etc/config/snmpd, junto con iw, iwinfo, ubus, jsonfilter y los datos de cliente de netjson-monitoring. Define un enfoque para extraer las estaciones WiFi asociadas y los campos de cliente indicados; se considera terminado cuando esta información pueda obtenerse mediante la abstracción de dispositivos basada en SNMP del proyecto.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

enhancement

This is one of the pieces of information in which openwisp users are mostly interested since it's widely used in public WiFi networks.

We can get this information with additional scripts and a custom MIB.
We could use iw or ubus (as we do in netjson-monitoring).
If we get a good result we could even send a patch to include these scripts in net-snmpd on OpenWRT by default.

Example exec net-snmpd script on on OpenWRT:

in /tmp/test:

#!/bin/sh
iwinfo

in /etc/config/snmpd:

config exec 'iwinfo'       
  option name 'iwinfo'
  option prog '/tmp/test' 
  option miboid '1.2.3.4'

Output:

snmpwalk -v2c -c public <ip> 1.2.3.4
iso.2.3.4.1.1 = INTEGER: 1
iso.2.3.4.2.1 = STRING: "yo"
iso.2.3.4.3.1 = STRING: "/tmp/test"
iso.2.3.4.100.1 = INTEGER: 0
iso.2.3.4.101.1 = STRING: "wlan1     ESSID: \"fvgwifi-demo\""
iso.2.3.4.101.2 = STRING: "          Access Point: 46:D1:FA:4B:38:42"
iso.2.3.4.101.3 = STRING: "          Mode: Master  Channel: 1 (2.412 GHz)"
iso.2.3.4.101.4 = STRING: "          Tx-Power: 20 dBm  Link Quality: unknown/70"
iso.2.3.4.101.5 = STRING: "          Signal: unknown  Noise: -92 dBm"
iso.2.3.4.101.6 = STRING: "          Bit Rate: unknown"
iso.2.3.4.101.7 = STRING: "          Encryption: none"
iso.2.3.4.101.8 = STRING: "          Type: nl80211  HW Mode(s): 802.11bgn"
iso.2.3.4.101.9 = STRING: "          Hardware: unknown [Generic MAC80211]"
iso.2.3.4.101.10 = STRING: "          TX power offset: unknown"
iso.2.3.4.101.11 = STRING: "          Frequency offset: unknown"
iso.2.3.4.101.12 = STRING: "          Supports VAPs: yes  PHY name: phy1"
iso.2.3.4.101.13 = ""
iso.2.3.4.101.14 = STRING: "wlo1      ESSID: \"broadgee-backup\""
iso.2.3.4.101.15 = STRING: "          Access Point: 44:D1:FA:4B:38:42"
iso.2.3.4.101.16 = STRING: "          Mode: Master  Channel: 1 (2.412 GHz)"
iso.2.3.4.101.17 = STRING: "          Tx-Power: 20 dBm  Link Quality: 62/70"
iso.2.3.4.101.18 = STRING: "          Signal: -48 dBm  Noise: -92 dBm"
iso.2.3.4.101.19 = STRING: "          Bit Rate: 36.1 MBit/s"
iso.2.3.4.101.20 = STRING: "          Encryption: WPA2 PSK (CCMP)"
iso.2.3.4.101.21 = STRING: "          Type: nl80211  HW Mode(s): 802.11bgn"
iso.2.3.4.101.22 = STRING: "          Hardware: unknown [Generic MAC80211]"
iso.2.3.4.101.23 = STRING: "          TX power offset: unknown"
iso.2.3.4.101.24 = STRING: "          Frequency offset: unknown"
iso.2.3.4.101.25 = STRING: "          Supports VAPs: yes  PHY name: phy1"
iso.2.3.4.101.26 = ""
iso.2.3.4.102.1 = INTEGER: 0
iso.2.3.4.103.1 = ""

Of course the example above is naive but just explains how to get additional info on OpenWRT via SNMPd.

The important info we currently get from netjson-monitoring is:

"channel": 1,
"country": "IT",
"frequency": 2412,
"mode": "access_point",
"noise": -93,
"signal": -54,
"ssid": "SSID name",
"tx_power": 20,
"clients": [
    {
        "aid": 1,
        "assoc": true,
        "auth": true,
        "authorized": true,
        "ht": true,
        "mac": "<MACADDR>",
        "mfp": false,
        "preauth": false,
        "vht": false,
        "wds": false,
        "wmm": true,
        "wps": false
    }
]

I think we can get this info with a mixture of commands like uci get, iwinfo, iw <interface> station dumpor via ubus and jsonfilter.

We can work on this idea once we complete the first release.

Lenguaje dominante
Python
Estrellas
42
Forks
18
Sin PR fusionados en 30 d

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