NAME¶

Net::LDAP::Control - LDAPv3 control object base class

SYNOPSIS¶

 use Net::LDAP::Control;
 use Net::LDAP::Constant qw( LDAP_CONTROL_MANAGEDSAIT );
 my $req_ctrl1 = Net::LDAP::Control->new( type => LDAP_CONTROL_MANAGEDSAIT );
 my $req_ctrl2 = Net::LDAP::Control->new(
   type     => "1.2.3.4",
   value    => "help",
   critical => 0
 );
 $mesg = $ldap->search( @args, control => [ $req_ctrl1, $req_ctrl2 ]);
 my @res_ctrls = $mesg->control();

DESCRIPTION¶

"Net::LDAP::Control" is the base-class for LDAPv3 control objects.

Controls provide a mechanism that allows one to extend the semantics and arguments of LDAP operations. Controls may be attached to LDAP operations, and only affect the semantics of the operation they are attached to.

Controls sent by clients are termed request controls, and are set using the "control" option of the respective LDAP operations. Controls sent by servers are called response controls, they can be found using the "control()" method of the response message objects.

Servers announce the controls they support in the attribute "supportedControls" in their RootDSE.

CONSTRUCTORS¶

new ( ARGS )

ARGS is a list of name/value pairs, valid arguments are:

from_asn ( ASN )

ASN is a HASH reference, normally extracted from a PDU. It will contain a "type" element and optionally "critical" and "value" elements. On return ASN will be blessed into a package. If "type" is a registered OID, then ASN will be blessed into the registered package, if not then ASN will be blessed into Net::LDAP::Control.

This constructor is used internally by Net::LDAP and assumes that HASH passed contains a valid control. It should be used with caution.

METHODS¶

In addition to the methods listed below, each of the named parameters to "new" is also available as a method. "type" will return the OID of the control object. "value" and "critical" are set/get methods and will return the current value for each attribute if called without arguments, but may also be called with arguments to set new values.

error ()

If there has been an error returns a description of the error, otherwise it will return "undef"

init ()

"init" will be called as the last step in both constructors. What it does will depend on the sub-class. It must always return the object.

register ( OID )

"register" is provided for sub-class implementors. It should be called as a class method on a sub-class of Net::LDAP::Control with the OID that the class will handle. Net::LDAP::Control will remember this class and OID pair and use it in the following situations.

( to_asn )

Returns a structure suitable for passing to Convert::ASN1 for encoding. This method will be called by Net::LDAP when the control is used.

The base class implementation of this method will call the "value" method without arguments to allow a sub-class to encode it's value. Sub-classes should not need to override this method.

valid ()

Returns true if the object is valid and can be encoded. The default implementation for this method is to return TRUE if there is no error, but sub-classes may override that.

SEE ALSO¶

Net::LDAP, Net::LDAP::RootDSE, Net::LDAP::Control::Assertion, Net::LDAP::Control::DontUseCopy, Net::LDAP::Control::EntryChange, Net::LDAP::Control::ManageDsaIT, Net::LDAP::Control::MatchedValues, Net::LDAP::Control::Paged, Net::LDAP::Control::PasswordPolicy, Net::LDAP::Control::PersistentSearch, Net::LDAP::Control::PostRead, Net::LDAP::Control::PreRead, Net::LDAP::Control::ProxyAuth, Net::LDAP::Control::Relax, Net::LDAP::Control::Sort, Net::LDAP::Control::SortResult, Net::LDAP::Control::SyncDone, Net::LDAP::Control::SyncRequest, Net::LDAP::Control::SyncState, Net::LDAP::Control::TreeDelete, Net::LDAP::Control::VLV, Net::LDAP::Control::VLVResponse

AUTHOR¶

Graham Barr <gbarr@pobox.com>

Please report any bugs, or post any suggestions, to the perl-ldap mailing list <perl-ldap@perl.org>

COPYRIGHT¶

Copyright (c) 1999-2004 Graham Barr. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.