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Re: "Roles" in OpenLDAP?
Nikos Voutsinas wrote:
......then it need only retrieve the user's entry to determine all of
the groups that
contain the user.
Thanks Howard for your answer.
Could you please provide me with more information on how someone could
get all of the groups that contain the user by just retrieving the
user's entry? If this functionality has already been explained
elsewhere, I would be gradefull if you could just point me where i can
find this kind of infomation.
I'm nowhere near as smart as Howard, but I'm going to give this one a
shot. We use a custom schema, two stanzas of which are excerpted here:
# value to be used to pigeonhole user in particular groups
# i.e. faculty, staff, student
attributetype ( 220.127.116.11.4.1.10518.104.22.168
DESC 'Value used to associate this user with different groups'
SUBSTR caseIgnoreSubstringsMatch )
objectclass ( 22.214.171.124.4.1.105126.96.36.199
SUP ( top )
MUST ( uinSR )
MAY ( groupSR $ bldg $ currentCourse $ completedCourse $
uidNumber $ gidNumber $ homeDirectory $ loginShell $
gecos $ description $ shadowLastChange $ shadowMin $
shadowMax $ shadowWarning $ shadowInactive $
shadowExpire $ shadowFlag $ origPassword $ genderSR $
mailSR $ mailAliasSR $ mailMessageStoreSR $ mailQuotaSR $
mailOrigSR $ mailAltSR $ gn $ loginSh0 $ loginSh1) )
Now, every entry that is objectclass personSR (one account per person is
our rule) has a potential groupSR attribute to check for group
membership. We've written web applications (with php) to allow specific
access to various components based on this. However groupSR isn't
mentioned in any slapd ACL (though I suppose it could be if we wanted to
restrict access to the information in LDAP based on groupSR). The
attribute groupSR may be empty or it may have one or more values. This
allows a person to be a member or one group or many or none. I think
it's a specific example of what was being discussed (dynamic groups).
Because we've done this in sort of a "non-standard" fashion (I just made
up this schema a couple years ago), we're considering moving back to a
more "standardized" organizationalRole or memberOf solution. I'd be
interested in the thoughts of people who feel strongly about how groups
should "best" be implemented.
oh, and the specific example (from a simple ldapsearch) is:
cderr@box:~$ ldapsearch -x "(uid=cderr)" groupSR
# filter: (uid=cderr)
# requesting: groupSR
# cderr, People, simons-rock, edu
# search result
result: 0 Success
# numResponses: 2
# numEntries: 1