[Freeipa-devel] [PATCH] 25 Create Tool for Enabling Disabling Managed Entry

Tue Sep 20 11:13:22 UTC 2011

On Fri, 2011-09-16 at 16:37 +0000, JR Aquino wrote:
> On Sep 16, 2011, at 2:11 AM, Martin Kosek wrote:
> 
> > On Thu, 2011-09-15 at 17:25 +0000, JR Aquino wrote:
> >> On Sep 15, 2011, at 1:47 AM, Martin Kosek wrote:
> >> 
> >>> On Thu, 2011-09-15 at 00:47 +0000, JR Aquino wrote:
> >>>> On Jul 22, 2011, at 7:05 AM, Martin Kosek wrote:
> >>> 
> >>>>> 5) I was thinking if there is a better solution to enabling/disabling of
> >>>>> the plugin. Likes setting something like "managedEntryEnabled" attribute
> >>>>> to on/off as we do with compat plugin. Current concept with disabling
> >>>>> the definition by damaging the originFilter and then restoring it from
> >>>>> an LDIF seems a bit awkward to me.
> >>>> 
> >>>> This has been completely changed:
> >>>> Instead of looking to ldif files, an ldap look up is now performed to dynamically list the available managed entries.
> >>> 
> >>> Now we are talking :-) I like the new approach.
> >> 
> >> <high five>
> >> 
> >>> 
> >>> I have reviewed your patch, basic functionality looks good. But I still
> >>> have few (nitpicking) comments:
> >>> 
> >>> 1) There are parts from the previous file that are no longer needed
> >>> since you switched to different approach:
> >>> 
> >>> +import os
> >>> 
> >>> +    from ipaserver.install.ldapupdate import LDAPUpdate, BadSyntax
> >>> 
> >>> +    import StringIO
> >>> 
> >>> +    import ldif
> >>> 
> >>> +except BadSyntax, e:
> >>> +    print "There is a syntax error in this update file:"
> >>> +    print "  %s" % e
> >>> +    sys.exit(1)
> >> 
> >> Removed
> >> 
> >>> 
> >>> 2) I saw few whitespace errors on following lines of the patch: 419, 433
> >>> and 453
> >> 
> >> Fixed whitespace errors
> >> 
> >>> 
> >>> 3) Output of the --list method is confusing:
> >>> 
> >>> # ipa-managed-entries --list
> >>> Directory Manager password: 
> >>> 
> >>> Available Managed Entry Plugins:
> >>> cn=upg definition,cn=definitions,cn=managed
> >>> entries,cn=etc,dc=idm,dc=lab,dc=bos,dc=redhat,dc=com
> >>> cn=ngp definition,cn=definitions,cn=managed
> >>> entries,cn=etc,dc=idm,dc=lab,dc=bos,dc=redhat,dc=com
> >>> 
> >>> You must specify a managed entry definition     <<<
> >>> # echo $?
> >>> 1        <<<
> >>> 
> >>> a) I shouldn't be asked to specify a managed entry definition for --list
> >> 
> >> Fixed
> >> 
> >>> b) The listing was successful, so we shouldn't return error code
> >> 
> >> Corrected error code
> >> 
> >>> 
> >>> 4) Return code for disabling an already disabled entry should be 2
> >>> (according to man pages):
> >>> 
> >>> # ipa-managed-entries -e 'cn=upg definition,cn=definitions,cn=managed entries,cn=etc,dc=idm,dc=lab,dc=bos,dc=redhat,dc=com' disable
> >>> Directory Manager password: 
> >>> 
> >>> Plugin already disabled
> >>> # echo $?
> >>> 0
> >> 
> >> Fixed error code
> >> 
> >>> 
> >>> 5) Strange is, that enabling a disabled plugin gives me return code 2:
> >>> # ipa-managed-entries -e 'cn=upg definition,cn=definitions,cn=managed entries,cn=etc,dc=idm,dc=lab,dc=bos,dc=redhat,dc=com' enable
> >>> Directory Manager password: 
> >>> 
> >>> Enabling Plugin
> >>> # echo $?
> >>> 2
> >>> 
> >>> Return codes for these actions should fit the man pages.
> >> 
> >> Fixed error code
> >> 
> >>> 
> >>> 6) I would improve working with LDAP filters, current solution is error
> >>> prone. Try disabling&enabling NGP Defition, we end up with this
> >>> originFilter:
> >>> 
> >>> originfilter: (&(objectclass=ipahostgroup))
> >>> 
> >>> I think the cleanest solution would be to use ldap.make_filter and
> >>> ldap.combine_filters functions to play with these filter. You can
> >>> inspire yourself in this example I wrote for DNS plugin:
> >>> 
> >>> rev_zone_filter = ldap.make_filter(search_kw, rules=ldap.MATCH_NONE, exact=False,
> >>>                   trailing_wildcard=False)
> >>> filter = ldap.combine_filters((rev_zone_filter, filter), rules=ldap.MATCH_ALL)
> >> 
> >> Rob and you addressed this in the mailing list.
> >> For the record, I do agree that we are lacking a method for reading and modifying existing ldap filters.
> >> We will continue with the simple string method here for this iteration.
> >> 
> >>> 
> >>> 7) Entering Directory Manager every time may be a bit tedious. Could we
> >>> use current Kerberos credentials and fall-back to asking Directory
> >>> Manager password if it doesn't work? Its already done this way in
> >>> ipa-replica-manage for example.
> >>> 
> >>> We could fix this, however, as an enhancement in another patch.
> >> 
> >> Fixed. We now will use gssapi if available, and prompt for password if there is no ticket.
> >> 
> >>> 
> >>> 8) Man page - please use the new united FreeIPA man page header. Instead
> >>> of 
> >>> 
> >>> +.TH "ipa-managed-entries" "1" "Sept 15 2011" "freeipa" ""
> >>> 
> >>> use:
> >>> 
> >>> +.TH "ipa-managed-entries" "1" "Sept 15 2011" "FreeIPA" "FreeIPA Manual
> >>> Pages"
> >> 
> >> Fixed
> >> 
> >>> 
> >>> 
> >>> 9) Man page - comma is missing for --list option:
> >>> 
> >>> +\fB\-l\-\-list\fR
> >>> 
> >> 
> >> Fixed
> >> 
> >>> 
> >>> 10) install/po/Makefile.in should be updated to: there is still
> >>> reference to ipa-host-net-manage and ipa-managed-entries reference is
> >>> missing
> >> 
> >> Fixed
> >> 
> > 
> > Great, most bugs are fixed. I only saw these 2 minor bugs. If those are
> > fixed, I think we can ack&push.
> > 
> > 1) Man pages: --list option is still not right, formating is wrong
> > +\fB\-l\fR, -\-list\fR
> 
> This typo is now corrected
> 
> > 
> > 2) Enable action is missing a notice for the user, like the disable
> > action has:
> > 
> > # ipa-managed-entries -e 'cn=UPG Definition,cn=Definitions,cn=Managed Entries,cn=etc,dc=idm,dc=lab,dc=bos,dc=redhat,dc=com' disable
> > Disabling Plugin
> 
> The output is now corrected.
> 
> > # ipa-managed-entries -e 'cn=UPG Definition,cn=Definitions,cn=Managed Entries,cn=etc,dc=idm,dc=lab,dc=bos,dc=redhat,dc=com' enable
> 
> I have now also corrected the --list / -e / --entry to support/display shorthand for the managed entries instead of the full DN.
> 
> # ipa-managed-entries --list
> Available Managed Entry Definitions:
> UPG Definition
> NGP Definition
> #
> 
> # ipa-managed-entries --entry="UPG Definition" status
> Plugin Enabled
> #
> 

Looks good. I found just one more bug:

# ipa-managed-entries -e foo status
Traceback (most recent call last):
  File "/usr/sbin/ipa-managed-entries", line 236, in <module>
    sys.exit(main())
  File "/usr/sbin/ipa-managed-entries", line 152, in main
    ['originfilter'],
  File "/usr/lib/python2.7/site-packages/ipaserver/ipaldap.py", line 204, in inner
    return f(*args, **kargs)
  File "/usr/lib64/python2.7/site-packages/ldap/ldapobject.py", line 502, in search_s
    return self.search_ext_s(base,scope,filterstr,attrlist,attrsonly,None,None,timeout=self.timeout)
  File "/usr/lib/python2.7/site-packages/ipaserver/ipaldap.py", line 204, in inner
    return f(*args, **kargs)
  File "/usr/lib64/python2.7/site-packages/ldap/ldapobject.py", line 496, in search_ext_s
    return self.result(msgid,all=1,timeout=timeout)[1]
  File "/usr/lib/python2.7/site-packages/ipaserver/ipaldap.py", line 181, in inner
    objtype, data = f(*args, **kargs)
  File "/usr/lib64/python2.7/site-packages/ldap/ldapobject.py", line 422, in result
    res_type,res_data,res_msgid = self.result2(msgid,all,timeout)
  File "/usr/lib/python2.7/site-packages/ipaserver/ipaldap.py", line 204, in inner
    return f(*args, **kargs)
  File "/usr/lib64/python2.7/site-packages/ldap/ldapobject.py", line 426, in result2
    res_type, res_data, res_msgid, srv_ctrls = self.result3(msgid,all,timeout)
  File "/usr/lib/python2.7/site-packages/ipaserver/ipaldap.py", line 204, in inner
    return f(*args, **kargs)
  File "/usr/lib64/python2.7/site-packages/ldap/ldapobject.py", line 432, in result3
    ldap_result = self._ldap_call(self._l.result3,msgid,all,timeout)
  File "/usr/lib/python2.7/site-packages/ipaserver/ipaldap.py", line 204, in inner
    return f(*args, **kargs)
  File "/usr/lib64/python2.7/site-packages/ldap/ldapobject.py", line 96, in _ldap_call
    result = func(*args,**kwargs)
ldap.NO_SUCH_OBJECT: {'matched': 'cn=definitions,cn=managed entries,cn=etc,dc=idm,dc=lab,dc=bos,dc=redhat,dc=com', 'desc': 'No such object'}

I think we should handle this situation better and report a nice error
message.

Martin