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24 lines
764 B
Python
24 lines
764 B
Python
import subprocess
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import pf
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"""
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Doing this the "right" way by using DIOCNATLOOK on the pf device turns out
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to be a pain. Apple has made a number of modifications to the data
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structures returned, and compiling userspace tools to test and work with
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this turns out to be a pain in the ass. Parsing pfctl output is short,
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simple, and works.
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"""
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class Resolver:
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STATECMD = ("sudo", "-n", "/sbin/pfctl", "-s", "state")
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def __init__(self):
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pass
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def original_addr(self, csock):
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peer = csock.getpeername()
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try:
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stxt = subprocess.check_output(self.STATECMD, stderr=subprocess.STDOUT)
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except subprocess.CalledProcessError:
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return None
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return pf.lookup(peer[0], peer[1], stxt)
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