Re: getinterfaces on NetBSD

[Fredrik Pettai <pettai () nordu net>]

On Mar 25, 2010, at 10:03 PM, David Fifield wrote:
> On Tue, Mar 23, 2010 at 06:22:26PM +0100, Fredrik Pettai wrote:
> > bash-4.0# nmap --iflist
> >
> > Starting Nmap 5.21 ( http://nmap.org ) at 2010-03-23 18:03 CET
> > INTERFACES: NONE FOUND(!)
> > WARNING: Unable to find appropriate interface for system route to
> > 193.10.5.1
> > WARNING: Unable to find appropriate interface for system route to
> > 127.0.0.1
> > WARNING: Unable to find appropriate interface for system route to
> > 127.0.0.1
> > ROUTES: NONE FOUND(!)
>
> I can reproduce this now on NetBSD. I found that this has been  
> reported
> before: http://seclists.org/nmap-dev/2009/q3/749. This revealed that
> there is a NetBSD patch in the pkgsrc tree, at
>
> http://cvsweb.se.netbsd.org/cgi-bin/bsdweb.cgi/pkgsrc/net/nmap/patches/patch-ad?rev=1.13;content-type=text%2Fplain
>
> The important issue is probably not Nmap 5.00 versus 5.21, but patched
> versus non-patched. Applying the patch fixes the problem for me. A  
> newer
> revision of the patch,
>
> http://cvsweb.se.netbsd.org/cgi-bin/bsdweb.cgi/pkgsrc/net/nmap/patches/patch-ad?rev=1.14;content-type=text%2Fplain
>
> looks wrong to me. The line
> +    len = ifr->ifr_addr.sa_len > sizeof(ifr->ifr_name);
> should instead be
> +    if (ifr->ifr_addr.sa_len > sizeof(ifr->ifr_ifru))

That's funny, I was just sitting and looking thru the patches myself  
and also found that (embracing) mistake.

> Incidentally, Fredrik, I see the name "pettai" in the pkgsrc tree; are
> you maintaining Nmap for NetBSD now?

I don't maintain it, but I committed that (broken) patch :-( I made a  
correct patch before, but somehow screwed up the one sent in to be  
committed.
Since nmap compiled fine and ran fine as an unprivileged user (unless  
you used --iflist), so I didn't notice it myself.

I just changed the patch, and yes, it works as expected. I've also  
flagged that I want to commit the correction into pkgsrc.

btw. maybe this page should be updated: http://nmap.org/book/inst-bsd.html
Now OpenBSD is the one with the oldest distribution of Nmap :-)

Thanks,
/P
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