samba - Aug 2018 - smbclient changed behaviour authentication-file

Hello,

we are using Sambadav[1] with Samba 4.4 in our university, which relays
on authentication-file with giving it a file descriptor.

After 4.4 this does not any more and requires a filename.

Is there something documented about this behaviour?

Is there a new way to pass a file descriptor for authentication?

Kind regards
 Philipp rehs

[

https://github.com/1afa/sambadav/blob/master/src/lib/SambaDAV/SMBClient/Process.php#L67
]
-- 
Heinrich-Heine-Universität Düsseldorf
Zentrum für Informations- und Medientechnologie
Kompetenzzentrum für wissenschaftliches Rechnen und Speichern

Universitätsstraße 1
Gebäude 25.41
Raum 00.51

Telefon: +49-211-81-15557
Mail: Philipp.Rehs at uni-duesseldorf.de
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On Fri, Aug 31, 2018 at 08:07:27PM +0000, Rehs, Philipp Helo via samba
wrote:
> Hello,
> 
> we are using Sambadav[1] with Samba 4.4 in our university, which relays
> on authentication-file with giving it a file descriptor.
> 
> After 4.4 this does not any more and requires a filename.
> 
> Is there something documented about this behaviour?
> 
> Is there a new way to pass a file descriptor for authentication?
> 
> Kind regards
>  Philipp rehs
It is now calling cli_credentials_parse_file(),
which uses the standard function fd_load()
to load the credentials from a file.

This does an fstat() on the file and sets
the size to read as size = sbuf.st_size.

I'm guessing that is what is failing now
for you, as the size is now being set as
zero on a fd /proc/self/fd/XXX path.

Hello,

thank you for this information.

Do you have any idea for an workaround? 

Kind regards
 Philipp Rehs

Am Freitag, den 31.08.2018, 13:28 -0700 schrieb Jeremy
Allison:
> On Fri, Aug 31, 2018 at 08:07:27PM +0000, Rehs, Philipp Helo via
> samba wrote:
> > Hello,
> > 
> > we are using Sambadav[1] with Samba 4.4 in our university, which
> > relays
> > on authentication-file with giving it a file descriptor.
> > 
> > After 4.4 this does not any more and requires a filename.
> > 
> > Is there something documented about this behaviour?
> > 
> > Is there a new way to pass a file descriptor for authentication?
> > 
> > Kind regards
> >  Philipp rehs
> 
> It is now calling cli_credentials_parse_file(),
> which uses the standard function fd_load()
> to load the credentials from a file.
> 
> This does an fstat() on the file and sets
> the size to read as size = sbuf.st_size.
> 
> I'm guessing that is what is failing now
> for you, as the size is now being set as
> zero on a fd /proc/self/fd/XXX path.
-- 
Heinrich-Heine-Universität Düsseldorf
Zentrum für Informations- und Medientechnologie
Kompetenzzentrum für wissenschaftliches Rechnen und Speichern

Universitätsstraße 1
Gebäude 25.41
Raum 00.51

Telefon: +49-211-81-15557
Mail: Philipp.Rehs at uni-duesseldorf.de
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