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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/pg_get_known_coin.c 18 : * @brief Implementation of the get_known_coin function for Postgres 19 : * @author Christian Grothoff 20 : */ 21 : #include "platform.h" 22 : #include "taler_error_codes.h" 23 : #include "taler_dbevents.h" 24 : #include "taler_pq_lib.h" 25 : #include "pg_get_known_coin.h" 26 : #include "pg_helper.h" 27 : 28 : enum GNUNET_DB_QueryStatus 29 277 : TEH_PG_get_known_coin (void *cls, 30 : const struct TALER_CoinSpendPublicKeyP *coin_pub, 31 : struct TALER_CoinPublicInfo *coin_info) 32 : { 33 277 : struct PostgresClosure *pg = cls; 34 277 : struct GNUNET_PQ_QueryParam params[] = { 35 277 : GNUNET_PQ_query_param_auto_from_type (coin_pub), 36 : GNUNET_PQ_query_param_end 37 : }; 38 277 : struct GNUNET_PQ_ResultSpec rs[] = { 39 277 : GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash", 40 : &coin_info->denom_pub_hash), 41 277 : GNUNET_PQ_result_spec_allow_null ( 42 277 : GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash", 43 : &coin_info->h_age_commitment), 44 : &coin_info->no_age_commitment), 45 277 : TALER_PQ_result_spec_denom_sig ("denom_sig", 46 : &coin_info->denom_sig), 47 : GNUNET_PQ_result_spec_end 48 : }; 49 : 50 277 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, 51 : "Getting known coin data for coin %s\n", 52 : TALER_B2S (coin_pub)); 53 277 : coin_info->coin_pub = *coin_pub; 54 277 : PREPARE (pg, 55 : "get_known_coin", 56 : "SELECT" 57 : " denominations.denom_pub_hash" 58 : ",age_commitment_hash" 59 : ",denom_sig" 60 : " FROM known_coins" 61 : " JOIN denominations USING (denominations_serial)" 62 : " WHERE coin_pub=$1;"); 63 277 : return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 64 : "get_known_coin", 65 : params, 66 : rs); 67 : }