使用 Scapy 时未解析的引用 IP() 和 TCP()

Question

我复制了示例中的代码来学习scapy。但意识到 IDE 显示了 IP() 和 TCP() 未解决引用的错误。有人知道如何解决这个问题吗？

代码如下：

#! /usr/bin/env python

from scapy.all import *
import logging

logging.getLogger("scapy.runtime").setLevel(logging.ERROR)

dst_ip = "10.0.0.1"
src_port = RandShort()
dst_port=80

tcp_connect_scan_resp = sr1(IP(dst=dst_ip)/TCP(sport=src_port,dport=dst_port,flags="S"), timeout=10)
if(str(type(tcp_connect_scan_resp))==""):
    print("Closed")
elif(tcp_connect_scan_resp.haslayer(TCP)):
    if(tcp_connect_scan_resp.getlayer(TCP).flags == 0x12):
        send_rst =sr(IP(dst=dst_ip)/TCP(sport=src_port,dport=dst_port,flags="AR"),timeout=10)
        print("Open")
elif (tcp_connect_scan_resp.getlayer(TCP).flags ==0x14):
    print("Closed")

我正在使用 Pycharm IDE。 Python2.7 和 scapy 2.4.0。我在Whosebug上搜索了一下，发现之前有人问过同样的问题，但是没有答案...... 这是我尝试运行代码后的错误：

/Users/chenneyhuang/PycharmProjects/Scanner/venv/bin/python /Users/chenneyhuang/PycharmProjects/Scanner/TCP.py
Traceback (most recent call last):
  File "/Users/chenneyhuang/PycharmProjects/Scanner/TCP.py", line 12, in <module>
    tcp_connect_scan_resp = sr1(IP(dst=dst_ip)/TCP(sport=src_port,dport=dst_port,flags="S"), timeout=10)
  File "/Users/chenneyhuang/PycharmProjects/Scanner/venv/lib/python2.7/site-packages/scapy/sendrecv.py", line 393, in sr1
    s=conf.L3socket(promisc=promisc, filter=filter, nofilter=nofilter, iface=iface)
  File "/Users/chenneyhuang/PycharmProjects/Scanner/venv/lib/python2.7/site-packages/scapy/arch/bpf/supersocket.py", line 58, in __init__
    (self.ins, self.dev_bpf) = get_dev_bpf()
  File "/Users/chenneyhuang/PycharmProjects/Scanner/venv/lib/python2.7/site-packages/scapy/arch/bpf/core.py", line 98, in get_dev_bpf
    raise Scapy_Exception("No /dev/bpf handle is available !")
scapy.error.Scapy_Exception: No /dev/bpf handle is available !

Process finished with exit code 1

Answer 1

我上周在这里回答了同样的未解决的参考问题： vscode import error: from scapy.all import IP

简而言之，不要担心那个错误，这是 Pylint（或类似的）的限制。如果您想删除 error/warning.

，我在另一个问题中提出了一个解决方法

对于 No /dev/bpf handle is available 错误，您是否尝试过运行 root 脚本？我看到建议作为解决此 GitHub 问题的方法：https://github.com/secdev/scapy/issues/1343

使用 Scapy 时未解析的引用 IP() 和 TCP()

Unsolved Reference IP() and TCP() When Using Scapy

scapy

python-2.7