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/*
This file is part of TALER
Copyright (C) 2023 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_get_age_withdraw.c
* @brief Implementation of the get_age_withdraw function for Postgres
* @author Özgür Kesim
*/
#include "platform.h"
#include "taler_error_codes.h"
#include "taler_dbevents.h"
#include "taler_pq_lib.h"
#include "pg_get_age_withdraw.h"
#include "pg_helper.h"
enum GNUNET_DB_QueryStatus
TEH_PG_get_age_withdraw (
void *cls,
const struct TALER_ReservePublicKeyP *reserve_pub,
const struct TALER_AgeWithdrawCommitmentHashP *ach,
struct TALER_EXCHANGEDB_AgeWithdraw *aw)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (reserve_pub),
GNUNET_PQ_query_param_auto_from_type (ach),
GNUNET_PQ_query_param_end
};
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_auto_from_type ("h_commitment",
&aw->h_commitment),
GNUNET_PQ_result_spec_auto_from_type ("reserve_sig",
&aw->reserve_sig),
GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
&aw->reserve_pub),
GNUNET_PQ_result_spec_uint16 ("max_age",
&aw->max_age),
TALER_PQ_result_spec_amount ("amount_with_fee",
pg->currency,
&aw->amount_with_fee),
GNUNET_PQ_result_spec_uint16 ("noreveal_index",
&aw->noreveal_index),
TALER_PQ_result_spec_array_blinded_coin_hash (
pg->conn,
"h_blind_evs",
&aw->num_coins,
&aw->h_coin_evs),
TALER_PQ_result_spec_array_blinded_denom_sig (
pg->conn,
"denom_sigs",
NULL, /* we assume that this is the same size as h_coin_evs */
&aw->denom_sigs),
TALER_PQ_result_spec_array_denom_hash (
pg->conn,
"denom_pub_hashes",
NULL, /* we assume that this is the same size as h_coin_evs */
&aw->denom_pub_hashes),
GNUNET_PQ_result_spec_end
};
GNUNET_assert (NULL != aw);
/* Used in #postgres_get_age_withdraw() to
locate the response for a /reserve/$RESERVE_PUB/age-withdraw request
using the hash of the blinded message. Also needed to ensure
idempotency of /reserve/$RESERVE_PUB/age-withdraw requests. */
PREPARE (pg,
"get_age_withdraw",
"SELECT"
" h_commitment"
",reserve_sig"
",reserve_pub"
",max_age"
",amount_with_fee"
",noreveal_index"
",h_blind_evs"
",denom_sigs"
",ARRAY("
" SELECT denominations.denom_pub_hash FROM ("
" SELECT UNNEST(denom_serials) AS id,"
" generate_subscripts(denom_serials, 1) AS nr" /* for order */
" ) AS denoms"
" LEFT JOIN denominations ON denominations.denominations_serial=denoms.id"
") AS denom_pub_hashes"
" FROM age_withdraw"
" WHERE reserve_pub=$1 and h_commitment=$2;");
return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
"get_age_withdraw",
params,
rs);
}
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