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/*
This file is part of TALER
Copyright (C) 2022-2023 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_lookup_transfer_by_deposit.c
* @brief Implementation of the lookup_transfer_by_deposit 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_transfer_by_deposit.h"
#include "pg_helper.h"
enum GNUNET_DB_QueryStatus
TEH_PG_lookup_transfer_by_deposit (
void *cls,
const struct TALER_PrivateContractHashP *h_contract_terms,
const struct TALER_MerchantWireHashP *h_wire,
const struct TALER_CoinSpendPublicKeyP *coin_pub,
const struct TALER_MerchantPublicKeyP *merchant_pub,
bool *pending,
struct TALER_WireTransferIdentifierRawP *wtid,
struct GNUNET_TIME_Timestamp *exec_time,
struct TALER_Amount *amount_with_fee,
struct TALER_Amount *deposit_fee,
struct TALER_EXCHANGEDB_KycStatus *kyc,
enum TALER_AmlDecisionState *aml_decision)
{
struct PostgresClosure *pg = cls;
enum GNUNET_DB_QueryStatus qs;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (coin_pub),
GNUNET_PQ_query_param_auto_from_type (h_contract_terms),
GNUNET_PQ_query_param_auto_from_type (merchant_pub),
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 ("wtid_raw",
wtid),
GNUNET_PQ_result_spec_auto_from_type ("wire_salt",
&wire_salt),
GNUNET_PQ_result_spec_string ("payto_uri",
&payto_uri),
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
};
memset (kyc,
0,
sizeof (*kyc));
/* check if the aggregation record exists and get it */
PREPARE (pg,
"lookup_deposit_wtid",
"SELECT"
" atr.wtid_raw"
",wire_out.execution_date"
",cdep.amount_with_fee"
",bdep.wire_salt"
",wt.payto_uri"
",denom.fee_deposit"
" FROM coin_deposits cdep"
" JOIN batch_deposits bdep"
" USING (batch_deposit_serial_id)"
" JOIN wire_targets wt"
" USING (wire_target_h_payto)"
" JOIN aggregation_tracking atr"
" ON (cdep.batch_deposit_serial_id = atr.batch_deposit_serial_id)"
" JOIN known_coins kc"
" ON (kc.coin_pub = cdep.coin_pub)"
" JOIN denominations denom"
" USING (denominations_serial)"
" JOIN wire_out"
" USING (wtid_raw)"
" WHERE cdep.coin_pub=$1"
" AND bdep.merchant_pub=$3"
" 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,
"lookup_deposit_wtid",
params,
rs);
if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs)
{
struct TALER_MerchantWireHashP wh;
TALER_merchant_wire_signature_hash (payto_uri,
&wire_salt,
&wh);
GNUNET_PQ_cleanup_result (rs);
if (0 ==
GNUNET_memcmp (&wh,
h_wire))
{
*pending = false;
kyc->ok = true;
*aml_decision = TALER_AML_NORMAL;
return qs;
}
qs = GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
}
if (0 > qs)
return qs;
*pending = true;
memset (wtid,
0,
sizeof (*wtid));
GNUNET_assert (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"lookup_deposit_wtid returned 0 matching rows\n");
{
/* Check if transaction exists in deposits, so that we just
do not have a WTID yet. In that case, return without wtid
(by setting 'pending' true). */
uint32_t status32 = TALER_AML_NORMAL;
uint64_t aml_kyc_row = 0;
struct GNUNET_PQ_ResultSpec rs2[] = {
GNUNET_PQ_result_spec_auto_from_type ("wire_salt",
&wire_salt),
GNUNET_PQ_result_spec_string ("payto_uri",
&payto_uri),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_uint64 ("legitimization_requirement_serial_id",
&kyc->requirement_row),
NULL),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_uint64 ("kyc_requirement",
&aml_kyc_row),
NULL),
TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
amount_with_fee),
TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit",
deposit_fee),
GNUNET_PQ_result_spec_timestamp ("wire_deadline",
exec_time),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_uint32 ("status",
&status32),
NULL),
GNUNET_PQ_result_spec_end
};
PREPARE (pg,
"get_deposit_without_wtid",
"SELECT"
" agt.legitimization_requirement_serial_id"
",bdep.wire_salt"
",wt.payto_uri"
",cdep.amount_with_fee"
",denom.fee_deposit"
",bdep.wire_deadline"
",aml.status"
",aml.kyc_requirement"
" FROM coin_deposits cdep"
" JOIN batch_deposits bdep"
" USING (batch_deposit_serial_id)"
" JOIN wire_targets wt"
" USING (wire_target_h_payto)"
" JOIN known_coins kc"
" ON (kc.coin_pub = cdep.coin_pub)"
" JOIN denominations denom"
" USING (denominations_serial)"
" LEFT JOIN aggregation_transient agt "
" ON ( (bdep.wire_target_h_payto = agt.wire_target_h_payto) AND"
" (bdep.merchant_pub = agt.merchant_pub) )"
" LEFT JOIN aml_status aml"
" ON (wt.wire_target_h_payto = aml.h_payto)"
" WHERE cdep.coin_pub=$1"
" AND bdep.merchant_pub=$3"
" AND bdep.h_contract_terms=$2"
" LIMIT 1;");
/* 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_deposit_without_wtid",
params,
rs2);
if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs)
{
struct TALER_MerchantWireHashP wh;
*aml_decision = (enum TALER_AmlDecisionState) status32;
if (0 == kyc->requirement_row)
kyc->ok = true; /* technically: unknown */
if ( (kyc->ok) &&
(TALER_AML_FROZEN == *aml_decision) &&
(0 != aml_kyc_row) )
{
/* KYC required via AML */
kyc->ok = false;
kyc->requirement_row = aml_kyc_row;
}
TALER_merchant_wire_signature_hash (payto_uri,
&wire_salt,
&wh);
GNUNET_PQ_cleanup_result (rs);
if (0 !=
GNUNET_memcmp (&wh,
h_wire))
return GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
}
*aml_decision = TALER_AML_NORMAL;
return qs;
}
}
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