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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 backenddb/pg_lookup_transfer.c
* @brief Implementation of the lookup_transfer function for Postgres
* @author Iván Ávalos
*/
#include "platform.h"
#include <taler/taler_error_codes.h>
#include <taler/taler_dbevents.h>
#include <taler/taler_pq_lib.h>
#include "pg_lookup_transfer.h"
#include "pg_helper.h"
enum GNUNET_DB_QueryStatus
TMH_PG_lookup_transfer (void *cls,
const char *instance_id,
const char *exchange_url,
const struct TALER_WireTransferIdentifierRawP *wtid,
struct TALER_Amount *total_amount,
struct TALER_Amount *wire_fee,
struct TALER_Amount *exchange_amount,
struct GNUNET_TIME_Timestamp *execution_time,
bool *have_exchange_sig,
bool *verified)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_string (exchange_url),
GNUNET_PQ_query_param_auto_from_type (wtid),
GNUNET_PQ_query_param_string (instance_id),
GNUNET_PQ_query_param_end
};
uint8_t verified8;
/** Amount we got actually credited, _excludes_ the wire fee */
bool no_sig;
struct TALER_Amount credit_amount;
struct GNUNET_PQ_ResultSpec rs[] = {
TALER_PQ_result_spec_amount_with_currency ("credit_amount",
&credit_amount),
GNUNET_PQ_result_spec_allow_null (
TALER_PQ_result_spec_amount_with_currency ("wire_fee",
wire_fee),
&no_sig),
GNUNET_PQ_result_spec_allow_null (
TALER_PQ_result_spec_amount_with_currency ("exchange_amount",
exchange_amount),
NULL),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_timestamp ("execution_time",
execution_time),
NULL),
GNUNET_PQ_result_spec_auto_from_type ("verified",
&verified8),
GNUNET_PQ_result_spec_end
};
enum GNUNET_DB_QueryStatus qs;
check_connection (pg);
*execution_time = GNUNET_TIME_UNIT_ZERO_TS;
PREPARE (pg,
"lookup_transfer",
"SELECT"
" mt.credit_amount AS credit_amount"
",mts.credit_amount AS exchange_amount"
",wire_fee"
",execution_time"
",verified"
" FROM merchant_transfers mt"
" JOIN merchant_accounts USING (account_serial)"
" JOIN merchant_instances USING (merchant_serial)"
" LEFT JOIN merchant_transfer_signatures mts USING (credit_serial)"
" WHERE wtid=$2"
" AND exchange_url=$1"
" AND merchant_id=$3;");
qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
"lookup_transfer",
params,
rs);
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Lookup transfer returned %d\n",
qs);
if (qs > 0)
{
*have_exchange_sig = ! no_sig;
*verified = (0 != verified8);
if (GNUNET_OK !=
TALER_amount_cmp_currency (&credit_amount,
wire_fee))
{
GNUNET_break (0);
return GNUNET_DB_STATUS_HARD_ERROR;
}
if ( (! no_sig) &&
(0 >
TALER_amount_add (total_amount,
&credit_amount,
wire_fee)) )
{
GNUNET_break (0);
return GNUNET_DB_STATUS_HARD_ERROR;
}
}
else
{
*verified = false;
*have_exchange_sig = false;
}
return qs;
}
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