https://bugs.openldap.org/show_bug.cgi?id=9664

          Issue ID: 9664
           Summary: Hiding namingContexts in the root DSE, when these are
                    not in small letters
           Product: OpenLDAP
           Version: 2.5.6
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: ---
         Component: slapd
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: ---

Below are the ACL for the frontend database.  They are supposed to hide the
cn=krbconfig from the namingContexts on the root DSE.

dn: olcDatabase=frontend,cn=config
objectClass: olcDatabaseConfig
objectClass: olcFrontendConfig
olcDatabase: frontend
#olcAccess: to dn.base="" attrs=namingContexts
val/distinguishedNameMatch="cn=krbcontainer" by * none
olcAccess: to dn.base="" attrs=namingContexts val="cn=krbcontainer" by * none
olcAccess: to dn.exact="" by * read

dn: olcDatabase=mdb,cn=config
objectClass: olcDatabaseConfig
objectClass: olcMdbConfig
olcDatabase: mdb
olcDbMaxSize: 10485760
olcSuffix: cn=krbcontainer
olcRootDN: uid=zzz,cn=krbcontainer
olcRootPW: zzz
olcDbDirectory: ldap/uuu
olcDbIndex: objectClass eq
olcAccess: to dn.sub="cn=krbContainer"
  by * read

It does work!

However, if change the case in (container ⇒ Container):
olcSuffix: cn=krbContainer

no matter how I set olcAccess in the frontend database, 
$ ldapsearch -xb "" -s base  namingContexts

always prints
dn:
namingContexts: cn=krbContainer

In particular

olcAccess: to dn.base="" attrs=namingContexts
val/distinguishedNameMatch="cn=krbcontainer" by * none

does not hide it.

• It shall be possible to find olcSuffix from the DSE/namingContexts, even if
the suffix is mixCased.

Since the case is known at the time, when the rules are written, OpenLDAP shall
offer an option for exact match, without converting data to lowercase. (as
shown by sladp -d -1 )

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