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Re: libdnet problem with monitor mode interfaces
From: Djalal Harouni <tixxdz () opendz org>
Date: Wed, 30 May 2012 00:59:16 +0100

On Tue, May 29, 2012 at 01:48:32PM -0700, David Fifield wrote:
On Tue, May 29, 2012 at 06:11:59PM +0100, Djalal Harouni wrote:
Yes, defining the ARPHRD_IEEE80211_RADIOTAP solves this case, but what
if another use reports the same problem but with a different ARPHDR_* value ?

I think that's fine. We can handle these case-by-case as they come up.
Potentially for a new header format we have to do something different; I
don't think it's correct to use the same memcpy for all unknown header
formats.
I agree.

If we want to go this way then it seems that we can rely on
ARPHRD_IEEE80211_RADIOTAP, since it's also used outside the kernel, the
madwifi driver and the batctl (B.A.T.M.A.N. control tool):
https://lists.open-mesh.org/pipermail/b.a.t.m.a.n/2011-February/004144.html

Linux Ref: http://lxr.free-electrons.com/ident?i=ARPHRD_IEEE80211_RADIOTAP

Patch is attached, the --iflist will show the monitor interface and
hopefully Nmap will peekup the right one.

I think this is fine. But let's use the name ARP_HRD_IEEE80211_RADIOTAP
(extra underscore) because that matches the other internal libdnet
definitions. Please commit it.
I've attached the patch since it seems that currently I can't commit to
nmap svn, do I've write permissions ? I can't also write to my
nmap-exp/djalal/ branch.


I'll try to see with Fyodor later.

Thanks.

David Fifield
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-- 
tixxdz
http://opendz.org

Attachment: libdnet-stripped_radiotap_monitor.patch
Description:

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