[OpenAFS] Question for admins regarding pts membership output

[Jeffrey E Altman]

This is a cryptographically signed message in MIME format.

--------------ms010309040906080306080605
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit

On 7/15/2022 6:18 PM, Richard Brittain (Richard.Brittain@dartmouth.edu) 
wrote:
> On 2022-07-15, 09:04, "Jeffrey E Altman" <jaltman@auristor.com> wrote:
>
>      On 7/13/2022 6:07 PM, Richard Brittain (Richard.Brittain@dartmouth.edu)
>      wrote:
>      > I hope that doesn't lead people to expect 'pts membership system:authuser' to show all users.
>      >
>      > Richard
>
>      I'm curious.  Why would it be wrong for users to expect 'pts membership
>      system:authuser' and 'pts membership system:anyuser' to list their
>      membership assuming the caller had the necessary access rights?

> Only that the output of system:authuser would be confusingly long, and what would system:anyuser generate anyway ?.  We also have scripts for 'show me everyone who has access to this entity', which gets complicated with nested groups, and I couldn't figure out what to display for 'everyone'.  It would be valid to ignore named users in the ACL and just say 'everyone' in that case.

What to display for "everyone" is easy, its "system:anyuser".

The output of system:authuser in OpenAFS would be close to the output of

     pts listentries -user | grep -v '@' | grep -v 'anonymous' | gawk 
'{print $1}'

In other words, the list of all user entries that are not foreign and 
are not "anonymous".   it would also exclude any IP address entries.

The output of system:anyuser would be

     pts listentries -user | gawk '{print $1}'

again with the exception of all IP address entries.   The difference is 
that system:anyuser output includes "anonymous" and the foreign entities.

In an AuriStorFS world the system:authuser and system:anyuser lists 
would also exclude "machine" and "network" entities.

Enumerating the membership of system:anyuser and system:authuser would 
by default be restricted to "-showmembers self" which means that only 
members of the system:administrators group would be able to enumerate 
the membership.

A cell that wished to offer broader access might set "-showmembers 
members" on system:authuser but that would be the same as "-showmembers 
anyone" for "system:anyuser".   I think the default is appropriate for 
all cells.

> Tangentially related, we use a wrapper to list AFS groups, which looks up a few bits of useful information about each member besides their AFS username.  This is very user-friendly, but means lots of LDAP lookups and would take forever on the full output of system:authuser.

Makes sense.   That would take a while for a cell with several hundred 
thousand users.

I can imagine a plugin for both the protection service and the pts 
client that would allow the protection service to query LDAP or some 
other service and return an opaque blob to the pts client to be unpacked 
and displayed by the pts plugin.

Jeffrey Altman



--------------ms010309040906080306080605
Content-Type: application/pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"
Content-Description: S/MIME Cryptographic Signature
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--------------ms010309040906080306080605--