在python3 scapy模块中出现错误....数据包嗅探器

编程问答 2022-06-13

问题描述

我正在使用python-3.7构建嗅探工具，当我尝试使用scapy_http模块时遇到了该错误。

它在python-2.x中正常工作。对象类型为packet [scapy.Raw] .load

代码：

#!usr/bin/env python
import scapy.all as scapy
from scapy.layers import http

def sniff(interface):
    scapy.sniff(iface=interface,store=False,prn=process_sniffed_packet)
    #store=Flase(does not store the output in memory)
    #prn= call another  function after one packet or any data is sniffed is sniffed

def process_sniffed_packet(packet):
    if packet.haslayer(http.HTTPRequest):
        if packet.haslayer(scapy.Raw):
            load = packet[scapy.Raw].load
            if "username" in load:
                print(load)
sniff("eth0")

错误：

 File "packet_sniffer.py",line 16,in <module>
    sniff("eth0")
  File "packet_sniffer.py",line 6,in sniff
    scapy.sniff(iface=interface,prn=process_sniffed_packet)
  File "/usr/local/lib/python3.8/site-packages/scapy/sendrecv.py",line 1036,in sniff
    sniffer._run(*args,**kwargs)
  File "/usr/local/lib/python3.8/site-packages/scapy/sendrecv.py",line 989,in _run
    session.on_packet_received(p)
  File "/usr/local/lib/python3.8/site-packages/scapy/sessions.py",line 82,in on_packet_received
    result = self.prn(pkt)
  File "packet_sniffer.py",line 14,in process_sniffed_packet
    if "username" in load:
****TypeError: a bytes-like object is required,not 'str'****

解决方法

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python-3.xscapy