Man page - fido_bio_template_array_count(3)

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Manual

FIDO_BIO_TEMPLATE (3) Library Functions Manual FIDO_BIO_TEMPLATE (3)

NAME

fido_bio_template, fido_bio_template_array_count, fido_bio_template_array_free, fido_bio_template_array_new, fido_bio_template_free, fido_bio_template_id_len, fido_bio_template_id_ptr, fido_bio_template_name, fido_bio_template_new, fido_bio_template_set_id, fido_bio_template_set_name ā€” FIDO2 biometric template API

SYNOPSIS

#include <fido.h>
#include <fido/bio.h>

fido_bio_template_t *

fido_bio_template_new ( void );

void

fido_bio_template_free ( fido_bio_template_tĀ **template_p );

const char *

fido_bio_template_name ( constĀ fido_bio_template_tĀ *template );

const unsigned char *

fido_bio_template_id_ptr ( constĀ fido_bio_template_tĀ *template );

size_t

fido_bio_template_id_len ( constĀ fido_bio_template_tĀ *template );

int

fido_bio_template_set_id ( fido_bio_template_tĀ *template , constĀ unsignedĀ charĀ *ptr , size_tĀ len );

int

fido_bio_template_set_name ( fido_bio_template_tĀ *template , constĀ charĀ *name );

fido_bio_template_array_t *

fido_bio_template_array_new ( void );

void

fido_bio_template_array_free ( fido_bio_template_array_tĀ **array_p );

size_t

fido_bio_template_array_count ( constĀ fido_bio_template_array_tĀ *array );

const fido_bio_template_t *

fido_bio_template ( constĀ fido_bio_template_array_tĀ *array , size_tĀ idx );

DESCRIPTION

Existing FIDO2 biometric enrollments are abstracted in libfido2 by the fido_bio_template_t and fido_bio_template_array_t types.

The functions described in this page allow a fido_bio_template_t type to be allocated, deallocated, changed, and inspected, and a fido_bio_template_array_t type to be allocated, deallocated, and inspected. For device operations on fido_bio_template_t and fido_bio_template_array_t , please refer to fido_bio_dev_get_info (3).

The fido_bio_template_new () function returns a pointer to a newly allocated, empty fido_bio_template_t type. If memory cannot be allocated, NULL is returned.

The fido_bio_template_free () function releases the memory backing *template_p , where *template_p must have been previously allocated by fido_bio_template_new (). On return, *template_p is set to NULL. Either template_p or *template_p may be NULL, in which case fido_bio_template_free () is a NOP.

The fido_bio_template_name () function returns a pointer to a NUL-terminated string containing the friendly name of template , or NULL if template does not have a friendly name set.

The fido_bio_template_id_ptr () function returns a pointer to the template id of template , or NULL if template does not have an id. The corresponding length can be obtained by fido_bio_template_id_len ().

The fido_bio_template_set_name () function sets the friendly name of template to name . If name is NULL, the friendly name of template is unset.

The fido_bio_template_array_new () function returns a pointer to a newly allocated, empty fido_bio_template_array_t type. If memory cannot be allocated, NULL is returned.

The fido_bio_template_array_free () function releases the memory backing *array_p , where *array_p must have been previously allocated by fido_bio_template_array_new (). On return, *array_p is set to NULL. Either array_p or *array_p may be NULL, in which case fido_bio_template_array_free () is a NOP.

The fido_bio_template_array_count () function returns the number of templates in array .

The fido_bio_template () function returns a pointer to the template at index idx in array . Please note that the first template in array has an idx (index) value of 0.

RETURN VALUES

The error codes returned by fido_bio_template_set_id () and fido_bio_template_set_name () are defined in < fido/err.h >. On success, FIDO_OK is returned.

SEE ALSO

fido_bio_dev_get_info (3), fido_bio_enroll_new (3) Debian SeptemberĀ 13, 2019 FIDO_BIO_TEMPLATE (3)