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On 02/25/2014 03:34 PM, Rich Megginson
wrote:
On 02/25/2014 07:24 AM, thierry
bordaz wrote:
On 02/24/2014 10:47 PM, Noriko
Hosoi wrote:
Rich Megginson wrote:
On 02/24/2014 09:00 AM, thierry
bordaz wrote:
Hello,
IPA
team filled this ticket https://fedorahosted.org/389/ticket/47553.
It requires an ACI improvement so that during a MODDN
a given user is only allowed to move an entry from one
specified part of the DIT to an other specified part
of the DIT. This without the need to grant the ADD
permission.
Here is the design of what could be implemented to
support this need http://port389.org/wiki/Access_control_on_trees_specified_in_MODDN_operation
regards
thierry
Since this not related to any Red Hat internal or customer
information, we should move this discussion to the 389-devel
list.
Hi Thierry,
Your design looks good. A minor question. The doc does not
mention about "deny". For instance, in your example DIT, can
I allow "moddn_to" and "moddn_from" on the top
"dc=example,dc=com" and deny them on "cn=tests". Then, I can
move an entry between cn=accounts and staging, but not to/from
cn=tests? Or "deny" is not supposed to use there?
Thanks,
--noriko
Hi Noriko,
Thanks for having looked at the document. You are right, I
missed to document how 'DENY' aci would work.
I updated the design http://port389.org/wiki/Access_control_on_trees_specified_in_MODDN_operation#ACI_allow.2Fdeny_rights
to indicate how a DENY rights could be used.
By default if there is no ACI granting 'allow', the operation is
rejected. So in that case, without ACI applicable on 'cn=tests',
MODDN to/from 'cn=tests' will not be authorized.
Adding a DENY to target 'cn=tests' would also work but I think
it is not required.
In the example I added, the 'ALLOW' right is granted to a tree
(cn=accounts,SUFFIX) except to a subtree of it
(cn=except,cn=accounts,SUFFIX)
So in order to do a MODDN operation, you need both the moddn_from
aci and moddn_to aci?
For example:
dn: dc=example,dc=com
aci: (target="ldap:///cn=staging,dc=example,dc=com")(version
3.0; acl "MODDN from"; allow (moddn_from))
userdn="ldap:///uid=admin_accounts,dc=example,dc=com"
;)
If I only have this aci, will it allow anything? That is, if I
don't have a (moddn_to) aci somewhere, will this (moddn_from) aci
allow me to move anything?
Yes it will allow you to do a MODDN if you are granted the 'ADD'
right on the new superior entry.
I think this double ACI can be an issue as freeipa was hoping to use
a single ACI. But I have not found a solution to grant move
(to/from) in a single aci syntax.
regards
thierry
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