[Freeipa-devel] [PATCH] 0640 Add managed read permissions for compat tree

[Jakub Hrozek]

On Thu, Sep 04, 2014 at 10:30:11AM -0400, Simo Sorce wrote:
> On Thu, 2014-09-04 at 15:55 +0200, Martin Kosek wrote:
> > On 09/04/2014 02:40 PM, Alexander Bokovoy wrote:
> > > On Wed, 03 Sep 2014, Martin Kosek wrote:
> > >> On 09/03/2014 03:15 PM, Petr Viktorin wrote:
> > >>> On 09/03/2014 02:27 PM, Petr Viktorin wrote:
> > >>>> On 09/03/2014 01:27 PM, Petr Viktorin wrote:
> > >>>>> Hello,
> > >>>>> This adds managed read permissions to the compat tree.
> > >>>>>
> > >>>>> For users it grants anonymous access; authenticated users can read
> > >>>>> groups, hosts and netgroups.
> > >>>>>
> > >>>>> I'm unsure if this is what we want to do for groups, but "Read Group
> > >>>>> Membership" is only granted to authenticated users by default, and the
> > >>>>> compat tree exposes memberuid.
> > >>>>>
> > >>>>> https://fedorahosted.org/freeipa/ticket/4521
> > >>>>
> > >>>> Self-NACK, there's a typo (though I could swear I tested this :/)
> > >>>>
> > >>>>
> > >>>
> > >>> Fixed patch attached.
> > >>>
> > >>
> > >> I tested and it looks and works OK, ACK from me. We can wait till tomorrow to
> > >> see if there are no reservations from Alexander or Rob.
> > > I think we need a bit more fixes. Here is ACL log for an anonymous
> > > request:
> > > 
> > > [04/Sep/2014:15:28:49 +0300] schema-compat-plugin - searching from
> > > "cn=compat,dc=ipacloud,dc=test" for "(uid=admin)" with scope 2 (sub)
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - #### conn=18 op=1 binddn=""
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Deny search on
> > > entry(cn=computers,cn=compat,dc=ipacloud,dc=test).attr(uid) to anonymous: no
> > > aci matched the subject by aci(27): aciname="permission:System: Read DNS
> > > Configuration", acidn="dc=ipacloud,dc=test"
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - #### conn=18 op=1 binddn=""
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Deny search on
> > > entry(cn=groups,cn=compat,dc=ipacloud,dc=test).attr(uid) to anonymous: no aci
> > > matched the subject by aci(27): aciname="permission:System: Read DNS
> > > Configuration", acidn="dc=ipacloud,dc=test"
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - #### conn=18 op=1 binddn=""
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Deny search on
> > > entry(cn=ab,cn=groups,cn=compat,dc=ipacloud,dc=test).attr(uid) to anonymous: no
> > > aci matched the subject by aci(27): aciname="permission:System: Read DNS
> > > Configuration", acidn="dc=ipacloud,dc=test"
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - #### conn=18 op=1 binddn=""
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Deny search on
> > > entry(cn=editors,cn=groups,cn=compat,dc=ipacloud,dc=test).attr(uid) to
> > > anonymous: no aci matched the subject by aci(27): aciname=
> > > "permission:System: Read DNS Configuration", acidn="dc=ipacloud,dc=test"
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - #### conn=18 op=1 binddn=""
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Deny search on
> > > entry(cn=admins,cn=groups,cn=compat,dc=ipacloud,dc=test).attr(uid) to
> > > anonymous: no aci matched the subject by aci(27): aciname=
> > > "permission:System: Read DNS Configuration", acidn="dc=ipacloud,dc=test"
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - #### conn=18 op=1 binddn=""
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Deny search on
> > > entry(cn=ng,cn=compat,dc=ipacloud,dc=test).attr(uid) to anonymous: no aci
> > > matched the subject by aci(27): aciname="permission:System: Read DNS
> > > Configuration", acidn="dc=ipacloud,dc=test"
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - #### conn=18 op=1 binddn=""
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Allow search on
> > > entry(cn=users,cn=compat,dc=ipacloud,dc=test).attr(uid) to anonymous: allowed
> > > by aci(38): aciname= "permission:System: Read User
> > > Compat Tree", acidn="dc=ipacloud,dc=test"
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - #### conn=18 op=1 binddn=""
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Allow search on
> > > entry(uid=ab,cn=users,cn=compat,dc=ipacloud,dc=test).attr(uid) to anonymous:
> > > cached allow by aci(38)
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - #### conn=18 op=1 binddn=""
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Allow search on
> > > entry(uid=admin,cn=users,cn=compat,dc=ipacloud,dc=test).attr(uid) to anonymous:
> > > cached allow by aci(38)
> > > [04/Sep/2014:15:28:49 +0300] schema-compat-plugin - search matched
> > > uid=admin,cn=users,cn=compat,dc=ipacloud,dc=test
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - #### conn=18 op=1 binddn=""
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Deny read on
> > > entry(uid=admin,cn=users,cn=compat,dc=ipacloud,dc=test).attr(createTimestamp)
> > > to anonymous: no aci matched the subject by aci(18): aciname= "Admin can manage
> > > any entry", acidn="dc=ipacloud,dc=test"
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Allow read on
> > > entry(uid=admin,cn=users,cn=compat,dc=ipacloud,dc=test).attr(objectClass) to
> > > anonymous: allowed by aci(38): aciname= "permission:System: Read User Compat
> > > Tree", acidn="dc=ipacloud,dc=test"
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Allow read on
> > > entry(uid=admin,cn=users,cn=compat,dc=ipacloud,dc=test).attr(gecos) to
> > > anonymous: cached allow by aci(38)
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Allow read on
> > > entry(uid=admin,cn=users,cn=compat,dc=ipacloud,dc=test).attr(cn) to anonymous:
> > > cached allow by aci(38)
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Allow read on
> > > entry(uid=admin,cn=users,cn=compat,dc=ipacloud,dc=test).attr(uidNumber) to
> > > anonymous: cached allow by aci(38)
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Allow read on
> > > entry(uid=admin,cn=users,cn=compat,dc=ipacloud,dc=test).attr(gidNumber) to
> > > anonymous: cached allow by aci(38)
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Allow read on
> > > entry(uid=admin,cn=users,cn=compat,dc=ipacloud,dc=test).attr(loginShell) to
> > > anonymous: cached allow by aci(38)
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Allow read on
> > > entry(uid=admin,cn=users,cn=compat,dc=ipacloud,dc=test).attr(homeDirectory) to
> > > anonymous: cached allow by aci(38)
> > > [04/Sep/2014:15:28:49 +0300] NSACLPlugin - conn=18 op=1 (main): Allow read on
> > > entry(uid=admin,cn=users,cn=compat,dc=ipacloud,dc=test).attr(uid) to anonymous:
> > > cached allow by aci(38)
> > > 
> > > createTimestamp is operational attribute and is synthesized by
> > > slapi-nis, there is no problem allowing access to it. I think we can
> > > allow following operational attributes:
> > > 
> > > createTimestamp, modifyTimestamp, entryUSN, creatorsName, modifiersName,
> > > entryDN, hasSubordinates, numSubordinates
> > 
> > Ah, ok, probably yes. At least for some of them - CCing Simo. For example
> > entryUSN is used by SSSD - CCing jhrozek to confirm. So it should be allowed
> > for whole FreeIPA DIT. So this change is not so related to these patches.
> 
> Indeed entryUSN should always be allowed, at least to authenticated
> users.

Right, otherwise enumeration will be *painfully* slow as it would
download the whole tree every time.

We also use entryUSN in the compat tree for sudo rules by default, so
please leave that attribute readable :)