7 Dec
2010
7 Dec
'10
9:09 a.m.
Ecaterina Moraru (Valica) wrote:
--
Ricardo RodrÃguez
CTO
eBioTIC.
Life Sciences, Data Modeling and Information Management Systems
On Tue, Dec 7, 2010 at 01:32, Ricardo Rodriguez
[eBioTIC.] <
ricardo.rodriguez(a)ebiotic.net> wrote:
I get your point. thanks. But I think it keep being counter-intuitive
for me that once I grant some rights on a page to a group, the fact of
explicitly adding some user (belonging or not to the previous group)
rights to the same page prevents members of the original granted group,
included the owner, to access the document.
Ecaterina Moraru (Valica) wrote:
yes, but if you define a harder rule at page level, the space level one will
be overlapsed by the new rule.
Thanks,
Caty
Hi,
The behavior is correct because the checking order is: page > space >
wiki
(where a space-level setting can be superseded by
a (higher ranking)
page-level setting)
That's OK but, as Wouter said, if the data model implements
real-inheritance, must not I expect that the rights explicitly granted
at space level are considered also as explicitly granted at document
level as a consequence of rights inheritance?
Thanks!
--
Ricardo RodrÃguez
CTO
eBioTIC.
Life Sciences, Data Modeling and Information Management Systems
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The only exception I can think off that would
help your usecase (but is
not
implemented) is to have additional special rights
for the document
Creator.
Right now the creator gets DELETE right as an
additional behavior. Maybe
we
should always grant VIEW and EDIT to the
creator.
This way, at least, he could fix the rights behavior (by giving rights
also
to GroupA).
Another thing that is missing is a warning that by giving that right, the
giver will lose it.
If you want to read more about rights:
- http://www.xwiki.org/xwiki/bin/view/FAQ/HowDoesRightsWork
- http://dev.xwiki.org/xwiki/bin/view/Drafts/Access%20Rights
- http://dev.xwiki.org/xwiki/bin/view/Drafts/XWikiRightServiceReversed
Thanks,
Caty
On Fri, Nov 19, 2010 at 18:53, Wouter Boasson <wouter.boasson(a)rivm.nl
wrote:
> Hi,
>
> We ran into a rights problem, which might be the result of ignorance,
>
but
> could also be caused by a perceptual omission
in the rights model. The
> following happened:
>
> 1. created space, with explicit rights on group 'GroupA' (this
> automatically locks out users who are not a member of this group) => ok
> 2. create/edit a page as user 'UserA', member of 'GroupA' => ok
> 3. UserA (owner/creator of the document) grants view rights to user
> 'UserB', NOT in GroupA => problems!
>
> Now the creator/owner of the document (UserA) can NOT view his own
>
document
> anymore! Same for problem for every other
user in 'GroupA'.
>
> I figured that this is correct from a certain point of view: an explicit
> view for a specific user locks out all other users, but that includes
>
the
> owner and all other users, including those in
'GroupA', with correct
>
rights
> at the space level.
> A possible solution is to grant GroupA explicitly at the same time you
> grant a specific user access to a certain page, but people will forget
>
to do
> so.
>
> My question is: did we do anything wrong, and is it possible to manage
>
the
> rights in a way that prevents this
counter-intuitive behaviour?
>
> I have the feeling that the rights model lacks real-inheritance: when
> checking permissions for a user, it should return the permissions
>
including
> that of the group as if it were his explicit
permissions, also for pages
> that inherit rights from the space. E.g.
> hasView('UserA') should always return 'True' when the group he
belongs
>
to
> has view rights at the space level.
> Now it apparently returns 'False' when there is an implicit override by
> granting a user view rights. Or does inheritance from the space levels
>
stops
> working as soon as there's any kind of
override on a specific page?
>
> A possible but crude work-around could be using some intelligent trigger
> functions in the database to explicitly add all rights from the space to
>
the
> specific document as soon as an XWikiRights
object is written, but
>
that's
kind of a
last resort.
Could you help me? I hope for a better solution!
Thanks,
Wouter
Wouter Boasson (MSc)
Geo-IT Research and Coordination
RIVM - National Institute for Public Health and the Environment
Expertise Centre for Methodology and Information Services
Contact information
-----------------------
RIVM
VenZ/EMI, Pb 86
t.a.v. dhr. Drs. Wouter Boasson
Postbus 1
3720 BA Bilthoven
T +31(0)302748518
F +31(0)302744456
E wouter.boasson(a)rivm.nl
mo - th
Disclaimer RIVM
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