get_signature_for_known_coin.c (2343B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2023 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/get_signature_for_known_coin.c 18 * @brief Implementation of the get_signature_for_known_coin function for Postgres 19 * @author Özgür Kesim 20 */ 21 #include "taler/taler_pq_lib.h" 22 #include "exchange-database/get_signature_for_known_coin.h" 23 #include "helper.h" 24 25 enum GNUNET_DB_QueryStatus 26 TALER_EXCHANGEDB_get_signature_for_known_coin ( 27 struct TALER_EXCHANGEDB_PostgresContext *pg, 28 const struct TALER_CoinSpendPublicKeyP *coin_pub, 29 struct TALER_DenominationPublicKey *denom_pub, 30 struct TALER_DenominationSignature *denom_sig) 31 { 32 struct GNUNET_PQ_QueryParam params[] = { 33 GNUNET_PQ_query_param_auto_from_type (coin_pub), 34 GNUNET_PQ_query_param_end 35 }; 36 struct GNUNET_PQ_ResultSpec rs[] = { 37 TALER_PQ_result_spec_denom_pub ("denom_pub", 38 denom_pub), 39 TALER_PQ_result_spec_denom_sig ("denom_sig", 40 denom_sig), 41 GNUNET_PQ_result_spec_end 42 }; 43 44 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, 45 "Getting denomination and signature for (potentially) known coin %s\n", 46 TALER_B2S (coin_pub)); 47 PREPARE (pg, 48 "get_signature_for_known_coin", 49 "SELECT" 50 " denominations.denom_pub" 51 ",denom_sig" 52 " FROM known_coins" 53 " JOIN denominations USING (denominations_serial)" 54 " WHERE coin_pub=$1;"); 55 return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 56 "get_signature_for_known_coin", 57 params, 58 rs); 59 }