LDAP_GET_VALUES - Online Linux Manual PageSection : 3
Updated : 2022/01/20
Source : OpenLDAP 2.6.1
NAMEldap_get_values, ldap_get_values_len, ldap_count_values − LDAP attribute value handling routines
LIBRARYOpenLDAP LDAP (libldap, −lldap)
SYNOPSIS#include <ldap.h>
char **ldap_get_values(ld, entry, attr)
LDAP *ld;
LDAPMessage *entry;
char *attr;
struct berval **ldap_get_values_len(ld, entry, attr)
LDAP *ld;
LDAPMessage *entry;
char *attr;
int ldap_count_values(vals)
char **vals;
int ldap_count_values_len(vals)
struct berval **vals;
void ldap_value_free(vals)
char **vals;
void ldap_value_free_len(vals)
struct berval **vals;
DESCRIPTION
These routines are used to retrieve and manipulate attribute values from an LDAP entry as returned by ldap_first_entry(3) or ldap_next_entry(3). ldap_get_values() takes the entry and the attribute attr whose values are desired and returns a NULL-terminated array of the attribute's values. attr may be an attribute type as returned from ldap_first_attribute(3) or ldap_next_attribute(3), or if the attribute type is known it can simply be given. The number of values in the array can be counted by calling ldap_count_values(). The array of values returned can be freed by calling ldap_value_free(). If the attribute values are binary in nature, and thus not suitable to be returned as an array of char *'s, the ldap_get_values_len() routine can be used instead. It takes the same parameters as ldap_get_values(), but returns a NULL-terminated array of pointers to berval structures, each containing the length of and a pointer to a value. The number of values in the array can be counted by calling ldap_count_values_len(). The array of values returned can be freed by calling ldap_value_free_len().
ERRORSIf an error occurs in ldap_get_values() or ldap_get_values_len(), NULL is returned and the ld_errno field in the ld parameter is set to indicate the error. See ldap_error(3) for a description of possible error codes.
NOTESThese routines dynamically allocate memory which the caller must free using the supplied routines.
SEE ALSOldap(3), ldap_first_entry(3), ldap_first_attribute(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. 0
Johanes Gumabo
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