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Revert "Use lsof instead of pfctl to find target host on OSX in transparent mode."

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This reverts commit ffeede9b39.
This commit is contained in:
Aldo Cortesi 2013-06-16 16:23:36 +12:00
parent c1a60a1f6b
commit 886970040b
2 changed files with 8 additions and 9 deletions
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8
libmproxy/platform/osx.py
View File

@ -1,16 +1,16 @@
import subprocess
import lsof
import pf
"""
Doing this the "right" way by using DIOCNATLOOK on the pf device turns out
to be a pain. Apple has made a number of modifications to the data
structures returned, and compiling userspace tools to test and work with
this turns out to be a pain in the ass. Parsing lsof output is short,
this turns out to be a pain in the ass. Parsing pfctl output is short,
simple, and works.
"""
class Resolver:
STATECMD = ("sudo", "-n", "/usr/sbin/lsof", "-n", "-P", "-i", "TCP")
STATECMD = ("sudo", "-n", "/sbin/pfctl", "-s", "state")
def __init__(self):
pass
@ -20,4 +20,4 @@ class Resolver:
stxt = subprocess.check_output(self.STATECMD, stderr=subprocess.STDOUT)
except subprocess.CalledProcessError:
return None
return lsof.lookup(peer[0], peer[1], stxt)
return pf.lookup(peer[0], peer[1], stxt)

9
libmproxy/platform/lsof.py → libmproxy/platform/pf.py
View File

@ -1,4 +1,3 @@
import re
def lookup(address, port, s):
"""
@ -9,9 +8,9 @@ def lookup(address, port, s):
"""
spec = "%s:%s"%(address, port)
for i in s.split("\n"):
if "ESTABLISHED" in i and spec in i:
m = re.match(".* (\S*)->%s" % spec, i)
if m:
s = m.group(1).split(":")
if "ESTABLISHED:ESTABLISHED" in i and spec in i:
s = i.split()
if len(s) > 4:
s = s[4].split(":")
if len(s) == 2:
return s[0], int(s[1])