--On Wednesday, September 24, 2014 6:34 PM +0000 Craig White CWhite@skytouchtechnology.com wrote:

Assuming branches like:

ou=people,ou=company1,dc=example,dc=com

ou=people,ou=company2,dc=example,dc=com

Is it possible to use a regular expression in the configuration to ensure

a unique uid attribute in each branch but allow an identical uid attribute in different companies like:

uid=Bob,ou=people,ou=company1,dc=example,dc=com

uid=Bob,ou=people,ou=company2,dc=example,dc=com

I ask because the man page for slapo-unique seems to suggest only absolute dn's

No it does not. From the man page:

unique_uri <[strict ][ignore ]URI[URI...]...> Configure the base, attributes, scope, and filter for uniqueness checking. Multiple URIs may be specified within a domain, allowing complex selections of objects. Mul- tiple unique_uri statements or olcUniqueURI attributes will create independent domains, each with their own independent lists of URIs and ignore/strict settings.

Keywords strict and ignore have to be enclosed in quotes (") together with the URI.

The LDAP URI syntax is a subset of RFC-4516, and takes the form:

ldap:///[base dn]?[attributes...]?scope[?filter]

The base dn defaults to that of the back-end database. Specified base dns must be within the subtree of the back-end database.

If no attributes are specified, the URI applies to all non-operational attributes.

The scope component is effectively mandatory, because LDAP URIs default to base scope, which is not valid for uniqueness, because groups of one object are always unique. Scopes of sub (for subtree) and one for one-level are valid.

The filter component causes the domain to apply uniqueness constraints only to matching objects. e.g. ldap:///?cn?sub?(sn=e*) would require unique cn attributes for all objects in the subtree of the back-end database whose sn starts with an e.

It is possible to assert uniqueness upon all non-operational attributes except those listed by prepending the keyword ignore If not configured, all non-operational (e.g., system) attributes must be unique. Note that the attributes list of an ignore URI should generally contain the objectClass, dc, ou and o attributes, as these will gener- ally not be unique, nor are they operational attributes.

It is possible to set strict checking for the uniqueness domain by prepending the keyword strict. By default, uniqueness is not enforced for null values. Enabling strict mode extends the concept of uniqueness to include null values, such that only one attribute within a subtree will be allowed to have a null value. Strictness applies to all URIs within a uniqueness domain, but some domains may be strict while others are not.

Also, your example is completely bogus. RDNs are already required to be unique in a given subtree. There is no way you could have two entries of:

uid=bob,ou=people,ou=company1,dc=example,dc=com

I.e., it is already guaranteed that uid will be unique in this case, since it is the RDN value.

--Quanah

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Quanah Gibson-Mount Server Architect Zimbra, Inc. -------------------- Zimbra :: the leader in open source messaging and collaboration