Question

这是我的脚本，看看亚马逊破折号按钮是否被按下：

from scapy.all import *

def udp_filter(pkt):
  options = pkt[DHCP].options
  for option in options:
    if isinstance(option, tuple):
     if 'requested_addr' in option:
       print('button pressed')
       break

print('Waiting for a button press...')
sniff(prn=udp_filter, store=0, count=0, filter="udp", lfilter=lambda d: d.src == '8c:xx:xx:xx:xx:xx')

if __name__ == "__main__":
  main()

但是我收到以下错误消息：

Traceback (most recent call last):
  File "short.py", line 12, in <module>
    sniff(prn=udp_filter, store=0, count=0, filter="udp", lfilter=lambda d: d.src == '8c:xx:xx:xx:xx:xx')
  File "/usr/local/lib/python3.4/dist-packages/scapy/sendrecv.py", line 597, in sniff
    r = prn(p)
  File "dash.py", line 4, in udp_filter
    options = pkt[DHCP].options
  File "/usr/local/lib/python3.4/dist-packages/scapy/packet.py", line 814, in __getitem__
    raise IndexError("Layer [%s] not found" % lname)
IndexError: Layer [DHCP] not found

有人知道如何修复它并让它在python3.4下工作吗？

Answer 1

看起来错误在于它无法在数据包中找到DHCP层。您可以在if pkt.haslayer(DHCP):之上添加options = pkt[DHCP].options，如下所示：

def udp_filter(pkt): if pkt.haslayer(DHCP): options = pkt[DHCP].options for option in options: if isinstance(option, tuple): if 'requested_addr' in option: print('button pressed') break else: pass
这样它会在查找pkt [DHCP] .options。

之前检查DHCP

python dash按钮触发器无法正常工作

1 个答案: