NAME

       ldap_control_create,    ldap_control_find,    ldap_control_dup,   ldap_controls_dup,   ldap_control_free,
       ldap_controls_free - LDAP control manipulation routines

LIBRARY

       OpenLDAP LDAP (libldap, -lldap)

SYNOPSIS

       #include <ldap.h>

       int ldap_control_create(const char *oid, int iscritical, struct berval *value,  int  dupval,  LDAPControl
       **ctrlp);

       LDAPControl *ldap_control_find( const char *oid, LDAPControl **ctrls, LDAPControl ***nextctrlp);

       LDAPControl *ldap_control_dup(LDAPControl *ctrl);

       LDAPControl **ldap_controls_dup(LDAPControl **ctrls);

       void ldap_control_free(LDAPControl *ctrl);

       void ldap_controls_free(LDAPControl **ctrls);

DESCRIPTION

       These routines are used to manipulate structures used for LDAP controls.

       ldap_control_create()  creates a control with the specified OID using the contents of the value parameter
       for the control value, if any.  The content of value is duplicated if dupval is non-zero.  The iscritical
       parameter  must  be  non-zero  for  a  critical  control.  The  created  control is returned in the ctrlp
       parameter.  The routine returns LDAP_SUCCESS on success or some other error code on failure.  The content
       of  value,  for supported control types, can be prepared using helpers provided by this implementation of
       libldap, usually in the form ldap_create_<control  name>_control_value().   Otherwise,  it  can  be  BER-
       encoded using the functionalities of liblber.

       ldap_control_find()  searches  the  NULL-terminated  ctrls  array for a control whose OID matches the oid
       parameter.  The routine returns a pointer to the control if found,  NULL  otherwise.   If  the  parameter
       nextctrlp is not NULL, on return it will point to the next control in the array, and can be passed to the
       ldap_control_find() routine for subsequent calls, to find further occurrences of the same  control  type.
       The  use  of this function is discouraged; the recommended way of handling controls in responses consists
       in going through the array of controls, dealing with each of them in the returned order, since  it  could
       matter.

       ldap_control_dup() duplicates an individual control structure, and ldap_controls_dup() duplicates a NULL-
       terminated array of controls.

       ldap_control_free() frees an  individual  control  structure,  and  ldap_controls_free()  frees  a  NULL-
       terminated array of controls.

SEE ALSO

       ldap(3), ldap_error(3)

ACKNOWLEDGEMENTS

       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.