[Owncloud] Group backend question

[Dirk Kastens]

Hi,

> You're right, the group system isn't build for multiply backends yet.
>
> Changing it to behave simular to the users system has been a plan for a while
> but I never got to it.

I've nearly finished writing an ldap backend for groups. It depends on 
the user_ldap app and adds a search path and some attributes for 
posixgroups. I had to change the lib/group.php, lib/group/database.php, 
and lib/group/backend.php.

In the admin user menu I see my ldap users and the local group and 
posixgroup memberships of each user, and I can share my files with 
members of a posixgroup.

The only drawback is the implementation of group file sharing (that's 
independent from my ldap groups). If I share a file with a group, 
owncloud makes an entry of the form user at group for each group member in 
the oc_sharing table of the database. So it doesn't support dynamic 
group memberships. If there are new members in a group, they are not 
allowed to access the shared files. And if a user has been deleted from 
a group he can still access the shared files. Another drawback is, that 
if you have a big group with, let's say, 100 members, there are 100 
entries made in the database table. And if you want to disallow the 
sharing, you have to delete the 100 members individually from the 
sharing menu. That's very uncomfortable.

If you share a file with a group, there should be a single entry in the 
database, like @group. The members should be evaluated dynamically, IMO.

Dirk

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