/* returns data_size or a negative number on failure
*/
static int
_gnutls_signature_algorithm_send_params (gnutls_session_t session,
gnutls_buffer_st* extdata)
{
int ret;
size_t init_length = extdata->length;
gnutls_protocol_t ver = gnutls_protocol_get_version (session);
/* this function sends the client extension data */
if (session->security_parameters.entity == GNUTLS_CLIENT
&& _gnutls_version_has_selectable_sighash (ver))
{
if (session->internals.priorities.sign_algo.algorithms > 0)
{
uint8_t p[MAX_SIGN_ALGO_SIZE];
ret =
_gnutls_sign_algorithm_write_params (session, p, sizeof(p));
if (ret < 0)
return gnutls_assert_val(ret);
ret = _gnutls_buffer_append_data(extdata, p, ret);
if (ret < 0)
return gnutls_assert_val(ret);
return extdata->length - init_length;
}
}
/* if we are here it means we don't send the extension */
return 0;
}
/* returns data_size or a negative number on failure
*/
int
_gnutls_signature_algorithm_send_params (gnutls_session_t session,
opaque * data, size_t data_size)
{
int ret;
gnutls_protocol_t ver = gnutls_protocol_get_version (session);
/* this function sends the client extension data */
if (session->security_parameters.entity == GNUTLS_CLIENT
&& _gnutls_version_has_selectable_sighash (ver))
{
if (session->internals.priorities.sign_algo.algorithms > 0)
{
ret =
_gnutls_sign_algorithm_write_params (session, data, data_size);
if (ret < 0)
{
gnutls_assert ();
return ret;
}
return ret;
}
}
/* if we are here it means we don't send the extension */
return 0;
}
