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LDAP_GET_VALUES(3)
NAME
ldap_get_values, ldap_get_values_len, ldap_count_values - LDAP attribute
value handling routines
SYNOPSIS
#include <ldap.h>
typedef struct berval {
unsigned long bv_len;
char *bv_val;
};
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
ldap_count_values(vals)
char **vals;
ldap_count_values_len(vals)
struct berval **vals;
ldap_value_free(vals)
char **vals;
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().
ERRORS
If 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.
NOTES
These routines dynamically allocate memory which the caller must free using
the supplied routines.
SEE ALSO
ldap(3), ldap_first_entry(3), ldap_first_attribute(3), ldap_error(3)
ACKNOWLEDGEMENTS
OpenLDAP is developed and maintained by The OpenLDAP Project
(http://www.openldap.org/). OpenLDAP is derived from University of
Michigan LDAP 3.3 Release.
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Index for Section 3 |
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Alphabetical listing for L |
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Top of page |
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