问题描述
我正在与Polymorph合作。
尝试中断某些过程时出现问题。
我通常对Ctrl + C进行KeyboardInterrupt，但是当我这样做时：
Exception ignored in: 'netfilterqueue.global_callback'
Traceback (most recent call last):
File "/home/ubuntu/.local/lib/python3.6/site-packages/polymorph/interceptor.py",line 75,in linux_modify
packet.accept()
KeyboardInterrupt
，过程仍然继续。
我去检查interceptor.py，这是函数：
def linux_modify(self,packet):
"""This is the callback method that will be called when a packet
is intercepted. It is responsible of executing the preconditions,executions and postconditions of the `Template`.
Parameters
----------
packet : :obj:`Packet`
Netfilterqueue packet object. The packet that is intercepted.
"""
# Initialization of the Packet with the new raw bytes
self.packet.raw = packet.get_payload()
# Executing the preconditions,executions and postconditions
for functions in self._functions:
for condition in functions:
pkt = condition(self.packet)
# If the condition returns None,it is not held and the
# packet must be forwarded
if not pkt:
if self.packet:
packet.set_payload(self.packet.raw)
packet.accept()
return
# If the precondition returns the packet,we assign it to the
# actual packet
self.packet = pkt
# If all the conditions are met,we assign the payload of the modified
# packet to the nfqueue packet and forward it
packet.set_payload(self.packet.raw)
packet.accept()
由…呼叫：
def intercept(self):
"""This method intercepts the packets and send them to a callback
function."""
# For Windows Platforms
if platform.system() == "Windows":
import pydivert
w = pydivert.Windivert()
w.open()
print("[*] Waiting for packets...\n\n(Press Ctrl-C to exit)\n")
try:
while True:
self.windows_modify(w.recv(),w,pydivert)
except KeyboardInterrupt:
w.close()
# For Linux platforms
elif platform.system() == "Linux":
from netfilterqueue import NetfilterQueue
nfqueue = NetfilterQueue()
# The iptables rule queue number by default is 1
nfqueue.bind(1,self.linux_modify)
try:
self.set_iptables_rules()
print("[*] Waiting for packets...\n\n(Press Ctrl-C to exit)\n")
nfqueue.run()
except KeyboardInterrupt:
self.clean_iptables()
else:
print("Sorry. Platform not supported!\n")
15秒后（我认为NFQueue必须为空），我无法使用KeyboardInterrupt正常工作。
有什么主意吗？谢谢大家！
解决方法
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