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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_wire_hash_for_contract.c
* @brief Implementation of the get_wire_hash_for_contract function for Postgres
* @author Özgür Kesim
*/
#include "platform.h"
#include "taler_error_codes.h"
#include "taler_dbevents.h"
#include "taler_exchangedb_plugin.h"
#include "taler_pq_lib.h"
#include "pg_get_wire_hash_for_contract.h"
#include "pg_helper.h"
enum GNUNET_DB_QueryStatus
TEH_PG_get_wire_hash_for_contract (
void *cls,
const struct TALER_MerchantPublicKeyP *merchant_pub,
const struct TALER_PrivateContractHashP *h_contract_terms,
struct TALER_MerchantWireHashP *h_wire)
{
struct PostgresClosure *pg = cls;
enum GNUNET_DB_QueryStatus qs;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (merchant_pub),
GNUNET_PQ_query_param_auto_from_type (h_contract_terms),
GNUNET_PQ_query_param_end
};
char *payto_uri;
struct TALER_WireSaltP wire_salt;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_auto_from_type ("wire_salt",
&wire_salt),
GNUNET_PQ_result_spec_string ("payto_uri",
&payto_uri),
GNUNET_PQ_result_spec_end
};
/* check if the necessary records exist and get them */
PREPARE (pg,
"get_wire_hash_for_contract",
"SELECT"
" bdep.wire_salt"
",wt.payto_uri"
" FROM coin_deposits"
" JOIN batch_deposits bdep"
" USING (batch_deposit_serial_id)"
" JOIN wire_targets wt"
" USING (wire_target_h_payto)"
" WHERE bdep.merchant_pub=$1"
" AND bdep.h_contract_terms=$2");
/* NOTE: above query might be more efficient if we computed the shard
from the merchant_pub and included that in the query */
qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
"get_wire_hash_for_contract",
params,
rs);
if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs)
{
TALER_merchant_wire_signature_hash (payto_uri,
&wire_salt,
h_wire);
GNUNET_PQ_cleanup_result (rs);
}
return qs;
}
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