Getting the SID of the user out of the PAC ...

Getting the SID of the user out of the PAC ...

[Steve French]

Is there a way to get the SID of the user out of the MS-PAC through
Samba utils (or winbind)?

This would help cifs if when we upcall as we do today to get the
kerberos ticket, we were also given the user's SID not just the ticket
to use to send to the server during session setup.



-- 
Thanks,

Steve

Re: Getting the SID of the user out of the PAC ...

[Stefan Metzmacher]

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Am 27.09.19 um 08:39 schrieb Steve French via samba-technical:
> Is there a way to get the SID of the user out of the MS-PAC through
> Samba utils (or winbind)?
> 
> This would help cifs if when we upcall as we do today to get the
> kerberos ticket, we were also given the user's SID not just the ticket
> to use to send to the server during session setup.

Only if you get a service ticket for the joined client machine.

But I don't understand what a possible use case would be.

metze


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Re: Getting the SID of the user out of the PAC ...

[Steve French]

On Fri, Sep 27, 2019 at 1:44 AM Stefan Metzmacher <metze@samba.org> wrote:
>
> Am 27.09.19 um 08:39 schrieb Steve French via samba-technical:
> > Is there a way to get the SID of the user out of the MS-PAC through
> > Samba utils (or winbind)?
> >
> > This would help cifs if when we upcall as we do today to get the
> > kerberos ticket, we were also given the user's SID not just the ticket
> > to use to send to the server during session setup.
>
> Only if you get a service ticket for the joined client machine.
>
> But I don't understand what a possible use case would be.

When not mounting with "idsfromsid" this would allow us to use the
correct owner SID when creating ACLs (to include the owner and mode)
on mkdir and filecreate (the acl can be sent in the sd_context during
create)

-- 
Thanks,

Steve

Re: Getting the SID of the user out of the PAC ...

[Stefan Metzmacher]

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Am 27.09.19 um 08:50 schrieb Steve French:
> On Fri, Sep 27, 2019 at 1:44 AM Stefan Metzmacher <metze@samba.org> wrote:
>>
>> Am 27.09.19 um 08:39 schrieb Steve French via samba-technical:
>>> Is there a way to get the SID of the user out of the MS-PAC through
>>> Samba utils (or winbind)?
>>>
>>> This would help cifs if when we upcall as we do today to get the
>>> kerberos ticket, we were also given the user's SID not just the ticket
>>> to use to send to the server during session setup.
>>
>> Only if you get a service ticket for the joined client machine.
>>
>> But I don't understand what a possible use case would be.
> 
> When not mounting with "idsfromsid" this would allow us to use the
> correct owner SID when creating ACLs (to include the owner and mode)
> on mkdir and filecreate (the acl can be sent in the sd_context during
> create)

Maybe CREATOR_GROUP and CREATOR_OWNER are of some use for that...

metze



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Re: Getting the SID of the user out of the PAC ...

[ronnie sahlberg]

Please don't.

You can't get the sid from NTLMSSP

On Thu, Sep 26, 2019 at 11:39 PM Steve French <smfrench@gmail.com> wrote:
>
> Is there a way to get the SID of the user out of the MS-PAC through
> Samba utils (or winbind)?
>
> This would help cifs if when we upcall as we do today to get the
> kerberos ticket, we were also given the user's SID not just the ticket
> to use to send to the server during session setup.
>
>
>
> --
> Thanks,
>
> Steve