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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_insert_contract.c
* @brief Implementation of the insert_contract 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_insert_contract.h"
#include "pg_select_contract_by_purse.h"
#include "pg_helper.h"
enum GNUNET_DB_QueryStatus
TEH_PG_insert_contract (
void *cls,
const struct TALER_PurseContractPublicKeyP *purse_pub,
const struct TALER_EncryptedContract *econtract,
bool *in_conflict)
{
struct PostgresClosure *pg = cls;
enum GNUNET_DB_QueryStatus qs;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (purse_pub),
GNUNET_PQ_query_param_auto_from_type (&econtract->contract_pub),
GNUNET_PQ_query_param_fixed_size (econtract->econtract,
econtract->econtract_size),
GNUNET_PQ_query_param_auto_from_type (&econtract->econtract_sig),
GNUNET_PQ_query_param_end
};
*in_conflict = false;
/* Used in #postgres_insert_contract() */
PREPARE (pg,
"insert_contract",
"INSERT INTO contracts"
" (purse_pub"
" ,pub_ckey"
" ,e_contract"
" ,contract_sig"
" ,purse_expiration"
" ) SELECT "
" $1, $2, $3, $4, purse_expiration"
" FROM purse_requests"
" WHERE purse_pub=$1"
" ON CONFLICT DO NOTHING;");
qs = GNUNET_PQ_eval_prepared_non_select (pg->conn,
"insert_contract",
params);
if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS != qs)
return qs;
{
struct TALER_EncryptedContract econtract2;
qs = TEH_PG_select_contract_by_purse (pg,
purse_pub,
&econtract2);
if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != qs)
{
GNUNET_break (0);
return GNUNET_DB_STATUS_HARD_ERROR;
}
if ( (0 == GNUNET_memcmp (&econtract->contract_pub,
&econtract2.contract_pub)) &&
(econtract2.econtract_size ==
econtract->econtract_size) &&
(0 == memcmp (econtract2.econtract,
econtract->econtract,
econtract->econtract_size)) )
{
GNUNET_free (econtract2.econtract);
return GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
}
GNUNET_free (econtract2.econtract);
*in_conflict = true;
return GNUNET_DB_STATUS_SUCCESS_ONE_RESULT;
}
}
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