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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_lookup_wire_transfer.c
* @brief Implementation of the lookup_wire_transfer 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_lookup_wire_transfer.h"
#include "pg_helper.h"
/**
* Closure for #handle_wt_result.
*/
struct WireTransferResultContext
{
/**
* Function to call on each result.
*/
TALER_EXCHANGEDB_AggregationDataCallback cb;
/**
* Closure for @e cb.
*/
void *cb_cls;
/**
* Plugin context.
*/
struct PostgresClosure *pg;
/**
* Set to #GNUNET_SYSERR on serious errors.
*/
enum GNUNET_GenericReturnValue status;
};
/**
* Function to be called with the results of a SELECT statement
* that has returned @a num_results results. Helper function
* for #TEH_PG_lookup_wire_transfer().
*
* @param cls closure of type `struct WireTransferResultContext *`
* @param result the postgres result
* @param num_results the number of results in @a result
*/
static void
handle_wt_result (void *cls,
PGresult *result,
unsigned int num_results)
{
struct WireTransferResultContext *ctx = cls;
struct PostgresClosure *pg = ctx->pg;
for (unsigned int i = 0; i<num_results; i++)
{
uint64_t rowid;
struct TALER_PrivateContractHashP h_contract_terms;
struct TALER_CoinSpendPublicKeyP coin_pub;
struct TALER_PaytoHashP h_payto;
struct TALER_MerchantPublicKeyP merchant_pub;
struct GNUNET_TIME_Timestamp exec_time;
struct TALER_Amount amount_with_fee;
struct TALER_Amount deposit_fee;
struct TALER_DenominationPublicKey denom_pub;
char *payto_uri;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_uint64 ("aggregation_serial_id", &rowid),
GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms",
&h_contract_terms),
GNUNET_PQ_result_spec_string ("payto_uri",
&payto_uri),
GNUNET_PQ_result_spec_auto_from_type ("wire_target_h_payto",
&h_payto),
TALER_PQ_result_spec_denom_pub ("denom_pub",
&denom_pub),
GNUNET_PQ_result_spec_auto_from_type ("coin_pub",
&coin_pub),
GNUNET_PQ_result_spec_auto_from_type ("merchant_pub",
&merchant_pub),
GNUNET_PQ_result_spec_timestamp ("execution_date",
&exec_time),
TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
&amount_with_fee),
TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit",
&deposit_fee),
GNUNET_PQ_result_spec_end
};
if (GNUNET_OK !=
GNUNET_PQ_extract_result (result,
rs,
i))
{
GNUNET_break (0);
ctx->status = GNUNET_SYSERR;
return;
}
ctx->cb (ctx->cb_cls,
rowid,
&merchant_pub,
payto_uri,
&h_payto,
exec_time,
&h_contract_terms,
&denom_pub,
&coin_pub,
&amount_with_fee,
&deposit_fee);
GNUNET_PQ_cleanup_result (rs);
}
}
enum GNUNET_DB_QueryStatus
TEH_PG_lookup_wire_transfer (
void *cls,
const struct TALER_WireTransferIdentifierRawP *wtid,
TALER_EXCHANGEDB_AggregationDataCallback cb,
void *cb_cls)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (wtid),
GNUNET_PQ_query_param_end
};
struct WireTransferResultContext ctx = {
.cb = cb,
.cb_cls = cb_cls,
.pg = pg,
.status = GNUNET_OK
};
enum GNUNET_DB_QueryStatus qs;
PREPARE (pg,
"lookup_transactions",
"SELECT"
" aggregation_serial_id"
",deposits.h_contract_terms"
",payto_uri"
",wire_targets.wire_target_h_payto"
",kc.coin_pub"
",deposits.merchant_pub"
",wire_out.execution_date"
",deposits.amount_with_fee_val"
",deposits.amount_with_fee_frac"
",denom.fee_deposit_val"
",denom.fee_deposit_frac"
",denom.denom_pub"
" FROM aggregation_tracking"
" JOIN deposits"
" USING (deposit_serial_id)"
" JOIN wire_targets"
" USING (wire_target_h_payto)"
" JOIN known_coins kc"
" USING (coin_pub)"
" JOIN denominations denom"
" USING (denominations_serial)"
" JOIN wire_out"
" USING (wtid_raw)"
" WHERE wtid_raw=$1;");
qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
"lookup_transactions",
params,
&handle_wt_result,
&ctx);
if (GNUNET_OK != ctx.status)
return GNUNET_DB_STATUS_HARD_ERROR;
return qs;
}
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