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NAME | SYNOPSIS | DESCRIPTION | CONFIGURATION | EXAMPLES | FILES | SEE ALSO | ACKNOWLEDGEMENTS | COLOPHON |
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SLAPO-CONSTRAINT(5) File Formats Manual SLAPO-CONSTRAINT(5)
slapo-constraint - Attribute Constraint Overlay to slapd
ETCDIR/slapd.conf
The constraint overlay is used to ensure that attribute values
match some constraints beyond basic LDAP syntax. Attributes can
have multiple constraints placed upon them, and all must be
satisfied when modifying an attribute value under constraint.
This overlay is intended to be used to force syntactic regularity
upon certain string represented data which have well known
canonical forms, like telephone numbers, post codes, FQDNs, etc.
It constrains only LDAP add, modify and rename commands and only
seeks to control the add and replace values of modify and rename
requests.
No constraints are applied for operations performed with the
relax control set.
This slapd.conf option applies to the constraint overlay. It
should appear after the overlay directive.
constraint_attribute <attribute_name>[,...] <type> <value>
[<extra> [...]]
Specifies the constraint which should apply to the comma-
separated attribute list named as the first parameter.
Five types of constraint are currently supported - regex,
size, count, uri, and set.
The parameter following the regex type is a Unix style
regular expression (See regex(7) ). The parameter
following the uri type is an LDAP URI. The URI will be
evaluated using an internal search. It must not include a
hostname, and it must include a list of attributes to
evaluate.
The parameter following the set type is a string that is
interpreted according to the syntax in use for ACL sets.
This allows one to construct constraints based on the
contents of the entry.
The size type can be used to enforce a limit on an
attribute length, and the count type limits the number of
values of an attribute.
Extra parameters can occur in any order after those
described above.
<extra> : restrict=<uri>
This extra parameter allows one to restrict the
application of the corresponding constraint only to
entries that match the base, scope and filter portions of
the LDAP URI. The base, if present, must be within the
naming context of the database. The scope is only used
when the base is present; it defaults to base. The other
parameters of the URI are not allowed.
Any attempt to add or modify an attribute named as part of the
constraint overlay specification which does not fit the
constraint listed will fail with a LDAP_CONSTRAINT_VIOLATION
error.
overlay constraint
constraint_attribute jpegPhoto size 131072
constraint_attribute userPassword count 3
constraint_attribute mail regex ^[[:alnum:]]+@mydomain.com$
constraint_attribute title uri
ldap:///dc=catalog,dc=example,dc=com?title?sub?(objectClass=titleCatalog)
constraint_attribute cn,sn,givenName set
"(this/givenName + [ ] + this/sn) & this/cn"
restrict="ldap:///ou=People,dc=example,dc=com??sub?(objectClass=inetOrgPerson)"
A specification like the above would reject any mail attribute
which did not look like <alpha-numeric string>@mydomain.com. It
would also reject any title attribute whose values were not
listed in the title attribute of any titleCatalog entries in the
given scope. (Note that the "dc=catalog,dc=example,dc=com"
subtree ought to reside in a separate database, otherwise the
initial set of titleCatalog entries could not be populated while
the constraint is in effect.) Finally, it requires the values of
the attribute cn to be constructed by pairing values of the
attributes sn and givenName, separated by a space, but only for
entries derived from the objectClass inetOrgPerson.
ETCDIR/slapd.conf
default slapd configuration file
slapd.conf(5), slapd-config(5),
This module was written in 2005 by Neil Dunbar of Hewlett-Packard
and subsequently extended by Howard Chu and Emmanuel Dreyfus.
OpenLDAP Software is developed and maintained by The OpenLDAP
Project <http://www.openldap.org/>. OpenLDAP Software is derived
from the University of Michigan LDAP 3.3 Release.
This page is part of the OpenLDAP (an open source implementation
of the Lightweight Directory Access Protocol) project.
Information about the project can be found at
⟨http://www.openldap.org/⟩. If you have a bug report for this
manual page, see ⟨http://www.openldap.org/its/⟩. This page was
obtained from the project's upstream Git repository
⟨https://git.openldap.org/openldap/openldap.git⟩ on 2020-12-18.
(At that time, the date of the most recent commit that was found
in the repository was 2020-12-16.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
OpenLDAP LDVERSION RELEASEDATE SLAPO-CONSTRAINT(5)
Pages that refer to this page: slapd.overlays(5)
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