Python on OpenWrt Kamikaze 7.09

Seb — Mon, 14 Jul 2008 18:32:00 +0200

It is not possible to install python on OpenWrt Kamikaze 7.09 because it depends on libreadline which is not available in the repositories for now.
There is a simple workaround:

Install the libreadline from 7.06 (brcm47xx-2.6 for mipsel and atheros-2.6 for mips)

   # ipkg install http://downloads.openwrt.org/kamikaze/7.06/brcm47xx-2.6/packages/libreadline_5.1-1_mipsel.ipk

Install python

   # ipkg install python

I tested this on the au1000 7.09 build. It should work on other mipsel and mips builds and on 7.07.

NFQueue python bingings

Seb — Mon, 07 Jul 2008 14:04:00 +0200

A few month ago I needed python bindings for the nfqueue netfilter library (libnetfilter_queue).

I was going to write them myself since I found none, but then I stumbled across this on the netfilter mailing list.

I like this wrapper because it is simple and the code is clear. I was able to adapt my work to them very quickly.

There were some little problems though.

First of all the unchanged code cannot be used in multithreaded programs (see http://www.python.org/doc/api/threads.html).

So I wrote a little patch which adds the necessary Py_BEGIN_ALLOW_THREADS and a "stop" function to stop the queue.

The code can be found here:

nfqueue-multithreading.patch

The second problem appears only on Linux >=2.6.23 (see http://www.spinics.net/lists/netfilter/msg42063.html).

Here is the patch:

nfqueue-2.6.23-fix.patch

Special thanks to Mathieu Geli for this wrapper, it helped me a lot and saved time in my work.

By the way, I found new nfqueue bindings based on SWIG that look nice. They are brand new, but I haven't tested them yet.

Links:

UsualCoding.eu - python

Python on OpenWrt Kamikaze 7.09

NFQueue python bingings