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


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


 use Net::LDAP::Control;
 use Net::LDAP::Constant qw( LDAP_CONTROL_MATCHEDVALS );
 $ctrl = Net::LDAP::Control->new(
   type     => "",
   value    => "help",
   critical => 0
 $mesg = $ldap->search( @args, control => [ $ctrl ]);
 $ctrl = Net::LDAP::Control->new( type => LDAP_CONTROL_MATCHEDVALS );


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


new ( ARGS )
ARGS is a list of name/value pairs, valid arguments are:
A boolean value, if TRUE and the control is unrecognized by the server or is inappropriate for the requested operation then the server will return an error and the operation will not be performed.

If FALSE and the control is unrecognized by the server or is inappropriate for the requested operation then the server will ignore the control and perform the requested operation as if the control was not given.

If absent, FALSE is assumed.

A dotted-decimal representation of an OBJECT IDENTIFIER which uniquely identifies the control. This prevents conflicts between control names.

This may be ommitted if the contructor is being called on a sub-class of Net::LDAP::Control which has registered to be associated with an OID. If the contructor is being called on the Net::LDAP::Control package, then this argument must be given. If the given OID has been registered by a package, then the returned object will be of the type registered to handle that OID.

Optional information associated with the control. It's format is specific to the particular control.

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.


In addition to the methods listed below, each of the named parameters to new is also avaliable 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 contructors. 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 the Net::LDAP manpage 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.


the Net::LDAP manpage the Net::LDAP::Control::EntryChange manpage the Net::LDAP::Control::ManageDsaIT manpage the Net::LDAP::Control::Paged manpage the Net::LDAP::Control::PersistentSearch manpage the Net::LDAP::Control::ProxyAuth manpage the Net::LDAP::Control::Sort manpage the Net::LDAP::Control::SortResult manpage the Net::LDAP::Control::VLV manpage the Net::LDAP::Control::VLVResponse manpage


Graham Barr <>

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


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.

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