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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_select_contract.h
* @brief implementation of the select_contract function for Postgres
* @author Christian Grothoff
*/
#ifndef PG_SELECT_CONTRACT_H
#define PG_SELECT_CONTRACT_H
#include "taler_util.h"
#include "taler_json_lib.h"
#include "taler_exchangedb_plugin.h"
/**
* Function called to retrieve an encrypted contract.
*
* @param cls the @e cls of this struct with the plugin-specific state
* @param purse_pub key to lookup the contract by
* @param[out] pub_ckey set to the ephemeral DH used to encrypt the contract
* @param[out] econtract_sig set to the signature over the encrypted contract
* @param[out] econtract_size set to the number of bytes in @a econtract
* @param[out] econtract set to the encrypted contract on success, to be freed by the caller
* @return transaction status code
*/
enum GNUNET_DB_QueryStatus
TEH_PG_select_contract (void *cls,
const struct TALER_ContractDiffiePublicP *pub_ckey,
struct TALER_PurseContractPublicKeyP *purse_pub,
struct TALER_PurseContractSignatureP *econtract_sig,
size_t *econtract_size,
void **econtract);
#endif
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