haslayer(Dot11) Python2 vs Python3

[ratwix]

Things to consider Test on Rpi3

Brief description When testing "if packet.haslayer(Dot11)", it return nothing (always false) with Python3 but work with Python2.

How to reproduce

from scapy.all import *

ap_list = []

def PacketHandler(packet):
    if packet.haslayer(Dot11):
        if packet.type == 0 and packet.subtype == 4 :
            if packet.addr2 not in ap_list:
                ap_list.append(packet.addr2)
                print ("AP MAC: " + packet.addr2 + " with SSID:" + packet.info.decode() + " type " + packet.__class__.__name__)

print("Start sniffing")
sniff(iface="wlan0mon", prn=PacketHandler, store=0)
print("Stop sniffing")

Actual result $ sudo python3 test2.py Start sniffing

Expected result $ sudo python test2.py Start sniffing AP MAC: 24:0a:64:ca:02:0c with SSID: AP MAC: 7a:67:05:de:f9:3c with SSID: AP MAC: 54:60:09:f9:97:26 with SSID:unrudal AP MAC: ac:b5:7d:b6:b3:e7 with SSID: AP MAC: e4:b2:fb:46:aa:66 with SSID:

Related resources Version: 2.4.3 Python: 3.7

[guedou]

Please use the template to report an issue if you want us to provide an answer.

[ratwix]

Please use the template to report an issue if you want us to provide an answer.

Fixed

[guedou]

Could you try with the development version of Scapy?

[ratwix]

Sorry, I have stop this development.

Le mer. 29 avr. 2020 à 15:29, Guillaume Valadon notifications@github.com a écrit :

Could you try with the development version of Scapy?

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[alex-kowalczyk]

This issue is valid, I confirm it on Python3.7 (vs working Python2 code). What could be done to resolve it?

[guedou]

@alex-kowalczyk You can open a new issue an provide a simple example that exhibits the issue without needing to sniff Wi-Fi frames.