[syslinux] pxechn.c32 does not do TFTP

[Gene Cumm]

On Sat, Jul 13, 2013 at 5:30 PM, Gene Cumm <gene.cumm at gmail.com> wrote:
> On Sat, Jul 13, 2013 at 10:34 AM, Gene Cumm <gene.cumm at gmail.com> wrote:
>> Digging more, loadfile("192.0.2.1::pxe.0", &file.data, &file.size),
>> queries DNS, which sounds like it doesn't follow the same call path as
>> a COM32 calling pxe_dns().  If the DNS won't resolve the IP, things
>> won't load properly.  pxechn.c32 sets sname in the intended packet to
>> "192.0.2.1" which may be confusing something.
>>
>> More debugging needed.
>>
>> --
>> -Gene
>
> core/legacynet/dns_resolv.c is quite different and doesn't bother
> testing quads first.
>
> Matt/HPA: should this be patched or somehow checked to see if it can
> be factored away?  I've got a crude patch that I can clean up.
>
> --
> -Gene

Also, com32/lib/syslinux.c:pxe_dns() and
core/pxe/dnsresolv.c:dns_resolv() (and now possibly
core/legacynet/dns_resolv.c:dns_resolv()) both attempt to parse a
dotted quad (duplicating effort that could likely be refactored).

--
-Gene