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/*
This file is part of TALER
Copyright (C) 2022 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file exchangedb/pg_do_melt.c
* @brief Implementation of the do_melt function for Postgres
* @author Christian Grothoff
*/
#include "platform.h"
#include "taler_error_codes.h"
#include "taler_dbevents.h"
#include "taler_pq_lib.h"
#include "pg_do_melt.h"
#include "pg_helper.h"
enum GNUNET_DB_QueryStatus
TEH_PG_do_melt (
void *cls,
const struct TALER_RefreshMasterSecretP *rms,
struct TALER_EXCHANGEDB_Refresh *refresh,
uint64_t known_coin_id,
bool *zombie_required,
bool *balance_ok)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
NULL == rms
? GNUNET_PQ_query_param_null ()
: GNUNET_PQ_query_param_auto_from_type (rms),
TALER_PQ_query_param_amount (&refresh->amount_with_fee),
GNUNET_PQ_query_param_auto_from_type (&refresh->rc),
GNUNET_PQ_query_param_auto_from_type (&refresh->coin.coin_pub),
GNUNET_PQ_query_param_auto_from_type (&refresh->coin_sig),
GNUNET_PQ_query_param_uint64 (&known_coin_id),
GNUNET_PQ_query_param_uint32 (&refresh->noreveal_index),
GNUNET_PQ_query_param_bool (*zombie_required),
GNUNET_PQ_query_param_end
};
bool is_null;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_bool ("balance_ok",
balance_ok),
GNUNET_PQ_result_spec_bool ("zombie_required",
zombie_required),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_uint32 ("noreveal_index",
&refresh->noreveal_index),
&is_null),
GNUNET_PQ_result_spec_end
};
enum GNUNET_DB_QueryStatus qs;
/* Used in #postgres_do_melt() to melt a coin. */
PREPARE (pg,
"call_melt",
"SELECT "
" out_balance_ok AS balance_ok"
",out_zombie_bad AS zombie_required"
",out_noreveal_index AS noreveal_index"
" FROM exchange_do_melt"
" ($1,$2,$3,$4,$5,$6,$7,$8,$9);");
qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
"call_melt",
params,
rs);
if (is_null)
refresh->noreveal_index = UINT32_MAX; /* set to very invalid value */
return qs;
}
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