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CentOS 7.0 - man page for ldap_controls_free (centos section 3)

LDAP_CONTROLS(3)			       Library Functions Manual 			     LDAP_CONTROLS(3)

NAME
ldap_control_create, ldap_control_find, ldap_control_dup, ldap_controls_dup, ldap_control_free, ldap_con- trols_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 parame- ter must be non-zero for a critical control. The created control is returned in the ctrlp parameter. The rou- tine 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 parame- ter. 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_con- trol_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-ter- minated 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 University of Michigan LDAP 3.3 Release. OpenLDAP 2.4.39 2014/01/26 LDAP_CONTROLS(3)


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