37 lines
1.4 KiB
Python
37 lines
1.4 KiB
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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Note: Also Tested with FreeBSD 10 pkgng Python 2.7.x.
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Should work almost exactly as on Mac OS X and except with some changes to
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the output processing of pfctl (see pf.py).
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"""
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class Resolver(object):
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STATECMD = ("sudo", "-n", "/sbin/pfctl", "-s", "state")
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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 as e:
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if "sudo: a password is required" in e.output:
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insufficient_priv = True
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else:
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raise RuntimeError("Error getting pfctl state: " + repr(e))
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else:
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insufficient_priv = "sudo: a password is required" in stxt
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if insufficient_priv:
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raise RuntimeError(
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"Insufficient privileges to access pfctl. "
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"See http://mitmproxy.org/doc/transparent/osx.html for details.")
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return pf.lookup(peer[0], peer[1], stxt)
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