@deftypefun {int} {gnutls_x509_ext_import_subject_alt_names} (const gnutls_datum_t * @var{ext}, gnutls_subject_alt_names_t @var{sans}, unsigned int @var{flags})
@var{ext}: The DER-encoded extension data

@var{sans}: The alternative names

@var{flags}: should be zero

This function will export the alternative names in the provided DER-encoded
SubjectAltName PKIX extension, to a @code{gnutls_subject_alt_names_t}  type.  @code{sans} must be initialized.

This function will succeed even if there no subject alternative names
in the structure.

@strong{Returns:} On success, @code{GNUTLS_E_SUCCESS}  (0) is returned, otherwise a negative error value.

@strong{Since:} 3.3.0
@end deftypefun