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SLAPO-DYNLIST(5)
NAME
  slapo-dynlist - Dynamic List overlay

SYNOPSIS
  /usr/internet/openldap/etc/slapd.conf

DESCRIPTION
  The dynlist overlay to slapd(8) allows expansion of dynamic groups and
  more.	 Any time an entry with a specific objectClass is being returned, the
  LDAP URI-valued occurrences of a specific attribute are expanded into the
  corresponding entries, and the values of the attributes listed in the URI
  are added to the original entry.  No recursion is allowed, to avoid
  potential infinite loops.  The resulting entry must comply with the LDAP
  data model, so constraints are enforced.  For example, if a SINGLE-VALUE
  attribute is listed, only the first value results in the final entry.

CONFIGURATION
  The config directives that are specific to the dynlist overlay must be
  prefixed by dynlist-, to avoid potential conflicts with directives specific
  to the underlying database or to other stacked overlays.

  overlay dynlist
       This directive adds the dynlist overlay to the current database, or to
       the frontend, if used before any database instantiation; see
       slapd.conf(5) for details.

  This slapd.conf configuration option is define for the dynlist overlay. It
  may have multiple occurrences, and it must appear after the overlay
  directive.

  dynlist-attrset <group-oc> <URL-ad> [<member-ad>]
       The value <group-oc> is the name of the objectClass that triggers the
       dynamic expansion of the data.

       The value <URL-ad> is the name of the attributeDescription that
       cointains the URI that is expanded by the overlay; if none is present,
       no expansion occurs.  If the intersection of the attributes requested
       by the search operation (or the asserted attribute for compares) and
       the attributes listed in the URI is empty, no expansion occurs for
       that specific URI.  It must be a subtype of labeledURI.

       The value <member-ad> is optional; if present, the overlay behaves as
       a dynamic group: this attribute will list the DN of the entries
       resulting from the internal search.  In this case, the <attrs> portion
       of the URI must be absent, and the DNs of all the entries resulting
       from the expansion of the URI are listed as values of this attribute.
       Compares that assert the value of the <member-ad> attribute of entries
       with <group-oc> objectClass apply as if the DN of the entries
       resulting from the expansion of the URI were present in the <group-oc>
       entry as values of the <member-ad> attribute.

  The dynlist overlay may be used with any backend, but it is mainly intended
  for use with local storage backends.	In case the URI expansion is very
  resource-intensive and occurs frequently with well-defined patterns, one
  should consider adding a proxycache later on in the overlay stack.

EXAMPLE
  This example collects all the email addresses of a database into a single
  entry; first of all, make sure that slapd.conf contains the directives:

      include /path/to/dyngroup.schema
      # ...

      database <database>
      # ...

      overlay dynlist
      dynlist-attrset groupOfURLs memberURL

  and that slapd loads dynlist.la, if compiled as a run-time module; then add
  to the database an entry like

      dn: cn=Dynamic List,ou=Groups,dc=example,dc=com
      objectClass: groupOfURLs
      cn: Dynamic List
      memberURL: ldap:///ou=People,dc=example,dc=com?mail?sub?(objectClass=person)

  If no <attrs> are provided in the URI, all (non-operational) attributes are
  collected.

  This example implements the dynamic group feature on the member attribute:

      include /path/to/dyngroup.schema
      # ...

      database <database>
      # ...

      overlay dynlist
      dynlist-attrset groupOfURLs memberURL member

FILES
  /usr/internet/openldap/etc/slapd.conf
       default slapd configuration file

SEE ALSO
  slapd.conf(5), slapd(8).  The slapo-dynlist(5) overlay supports dynamic
  configuration via back-config.

ACKNOWLEDGEMENTS
  This module was written in 2004 by Pierangelo Masarati for SysNet s.n.c.

Index for Section 5

Alphabetical listing for S

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