select_contract_by_purse.c (2321B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022 Taler Systems SA 4 5 TALER is free software; you can redistribute it and/or modify it under the 6 terms of the GNU General Public License as published by the Free Software 7 Foundation; either version 3, or (at your option) any later version. 8 9 TALER is distributed in the hope that it will be useful, but WITHOUT ANY 10 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 11 A PARTICULAR PURPOSE. See the GNU General Public License for more details. 12 13 You should have received a copy of the GNU General Public License along with 14 TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> 15 */ 16 /** 17 * @file exchangedb/select_contract_by_purse.c 18 * @brief Implementation of the select_contract_by_purse function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "taler/taler_pq_lib.h" 22 #include "exchange-database/select_contract_by_purse.h" 23 #include "helper.h" 24 25 enum GNUNET_DB_QueryStatus 26 TALER_TALER_EXCHANGEDB_select_contract_by_purse ( 27 struct TALER_EXCHANGEDB_PostgresContext *pg, 28 const struct TALER_PurseContractPublicKeyP *purse_pub, 29 struct TALER_EncryptedContract *econtract) 30 { 31 struct GNUNET_PQ_QueryParam params[] = { 32 GNUNET_PQ_query_param_auto_from_type (purse_pub), 33 GNUNET_PQ_query_param_end 34 }; 35 struct GNUNET_PQ_ResultSpec rs[] = { 36 GNUNET_PQ_result_spec_auto_from_type ("pub_ckey", 37 &econtract->contract_pub), 38 GNUNET_PQ_result_spec_auto_from_type ("contract_sig", 39 &econtract->econtract_sig), 40 GNUNET_PQ_result_spec_variable_size ("e_contract", 41 &econtract->econtract, 42 &econtract->econtract_size), 43 GNUNET_PQ_result_spec_end 44 }; 45 46 PREPARE (pg, 47 "select_contract_by_purse", 48 "SELECT " 49 " pub_ckey" 50 ",e_contract" 51 ",contract_sig" 52 " FROM contracts" 53 " WHERE purse_pub=$1;"); 54 return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 55 "select_contract_by_purse", 56 params, 57 rs); 58 59 }