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@deftypefun {int} {gnutls_x509_crq_get_attribute_info} (gnutls_x509_crq_t @var{crq}, int @var{indx}, void * @var{oid}, size_t * @var{sizeof_oid})
@var{crq}: should contain a @code{gnutls_x509_crq_t} structure
@var{indx}: Specifies which attribute number to get. Use (0) to get the first one.
@var{oid}: a pointer to a structure to hold the OID
@var{sizeof_oid}: initially holds the maximum size of @code{oid} , on return
holds actual size of @code{oid} .
This function will return the requested attribute OID in the
certificate, and the critical flag for it. The attribute OID will
be stored as a string in the provided buffer. Use
@code{gnutls_x509_crq_get_attribute_data()} to extract the data.
If the buffer provided is not long enough to hold the output, then
* @code{sizeof_oid} is updated and @code{GNUTLS_E_SHORT_MEMORY_BUFFER} will be
returned.
@strong{Returns:} On success, @code{GNUTLS_E_SUCCESS} (0) is returned, otherwise a
negative error code in case of an error. If your have reached the
last extension available @code{GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE}
will be returned.
@strong{Since:} 2.8.0
@end deftypefun
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