do_refund.c (3547B)
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/do_refund.c 18 * @brief Implementation of the do_refund function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "taler/taler_error_codes.h" 22 #include "taler/taler_pq_lib.h" 23 #include "exchange-database/do_refund.h" 24 #include "helper.h" 25 #include "exchange-database/compute_shard.h" 26 27 28 enum GNUNET_DB_QueryStatus 29 TALER_EXCHANGEDB_do_refund ( 30 struct TALER_EXCHANGEDB_PostgresContext *pg, 31 const struct TALER_EXCHANGEDB_Refund *refund, 32 const struct TALER_Amount *deposit_fee, 33 uint64_t known_coin_id, 34 bool *not_found, 35 bool *refund_ok, 36 bool *gone, 37 bool *conflict) 38 { 39 uint64_t deposit_shard = TALER_EXCHANGEDB_compute_shard (&refund->details. 40 merchant_pub); 41 struct TALER_Amount amount_without_fee; 42 struct GNUNET_PQ_QueryParam params[] = { 43 TALER_PQ_query_param_amount (pg->conn, 44 &refund->details.refund_amount), 45 TALER_PQ_query_param_amount (pg->conn, 46 &amount_without_fee), 47 TALER_PQ_query_param_amount (pg->conn, 48 deposit_fee), 49 GNUNET_PQ_query_param_auto_from_type (&refund->details.h_contract_terms), 50 GNUNET_PQ_query_param_uint64 (&refund->details.rtransaction_id), 51 GNUNET_PQ_query_param_uint64 (&deposit_shard), 52 GNUNET_PQ_query_param_uint64 (&known_coin_id), 53 GNUNET_PQ_query_param_auto_from_type (&refund->coin.coin_pub), 54 GNUNET_PQ_query_param_auto_from_type (&refund->details.merchant_pub), 55 GNUNET_PQ_query_param_auto_from_type (&refund->details.merchant_sig), 56 GNUNET_PQ_query_param_end 57 }; 58 struct GNUNET_PQ_ResultSpec rs[] = { 59 GNUNET_PQ_result_spec_bool ("not_found", 60 not_found), 61 GNUNET_PQ_result_spec_bool ("refund_ok", 62 refund_ok), 63 GNUNET_PQ_result_spec_bool ("gone", 64 gone), 65 GNUNET_PQ_result_spec_bool ("conflict", 66 conflict), 67 GNUNET_PQ_result_spec_end 68 }; 69 70 if (0 > 71 TALER_amount_subtract (&amount_without_fee, 72 &refund->details.refund_amount, 73 &refund->details.refund_fee)) 74 { 75 GNUNET_break (0); 76 return GNUNET_DB_STATUS_HARD_ERROR; 77 } 78 PREPARE (pg, 79 "call_refund", 80 "SELECT " 81 " out_not_found AS not_found" 82 ",out_refund_ok AS refund_ok" 83 ",out_gone AS gone" 84 ",out_conflict AS conflict" 85 " FROM exchange_do_refund" 86 " ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10);"); 87 return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 88 "call_refund", 89 params, 90 rs); 91 }