From e2dc7ba09d54fb4fa4af796d5c37cd36174f8897 Mon Sep 17 00:00:00 2001
From: Aldo Cortesi <aldo@nullcube.com>
Date: Tue, 1 Jan 2013 11:13:56 +1300
Subject: First draft of OSX transparent proxy mode.

---
 libmproxy/platform/pf.py | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 libmproxy/platform/pf.py

(limited to 'libmproxy/platform/pf.py')

diff --git a/libmproxy/platform/pf.py b/libmproxy/platform/pf.py
new file mode 100644
index 00000000..062d3311
--- /dev/null
+++ b/libmproxy/platform/pf.py
@@ -0,0 +1,16 @@
+
+def lookup(address, port, s):
+    """
+        Parse the pfctl state output s, to look up the destination host
+        matching the client (address, port).
+
+        Returns an (address, port) tuple, or None.
+    """
+    spec = "%s:%s"%(address, port)
+    for i in s.split("\n"):
+        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])
-- 
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