pg_lookup_refunds_detailed.c (6022B)
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 backenddb/pg_lookup_refunds_detailed.c 18 * @brief Implementation of the lookup_refunds_detailed function for Postgres 19 * @author Iván Ávalos 20 */ 21 #include "platform.h" 22 #include <taler/taler_error_codes.h> 23 #include <taler/taler_dbevents.h> 24 #include <taler/taler_pq_lib.h> 25 #include "pg_lookup_refunds_detailed.h" 26 #include "pg_helper.h" 27 28 /** 29 * Closure for #lookup_refunds_detailed_cb(). 30 */ 31 struct LookupRefundsDetailedContext 32 { 33 /** 34 * Function to call for each refund. 35 */ 36 TALER_MERCHANTDB_RefundDetailCallback rc; 37 38 /** 39 * Closure for @e rc. 40 */ 41 void *rc_cls; 42 43 /** 44 * Plugin context. 45 */ 46 struct PostgresClosure *pg; 47 48 /** 49 * Transaction result. 50 */ 51 enum GNUNET_DB_QueryStatus qs; 52 }; 53 54 55 /** 56 * Function to be called with the results of a SELECT statement 57 * that has returned @a num_results results. 58 * 59 * @param cls of type `struct GetRefundsContext *` 60 * @param result the postgres result 61 * @param num_results the number of results in @a result 62 */ 63 static void 64 lookup_refunds_detailed_cb (void *cls, 65 PGresult *result, 66 unsigned int num_results) 67 { 68 struct LookupRefundsDetailedContext *lrdc = cls; 69 70 for (unsigned int i = 0; i<num_results; i++) 71 { 72 uint64_t refund_serial; 73 struct GNUNET_TIME_Timestamp timestamp; 74 struct TALER_CoinSpendPublicKeyP coin_pub; 75 uint64_t rtransaction_id; 76 struct TALER_Amount refund_amount; 77 char *reason; 78 char *exchange_url; 79 uint8_t pending8; 80 struct GNUNET_PQ_ResultSpec rs[] = { 81 GNUNET_PQ_result_spec_uint64 ("refund_serial", 82 &refund_serial), 83 GNUNET_PQ_result_spec_timestamp ("refund_timestamp", 84 ×tamp), 85 GNUNET_PQ_result_spec_auto_from_type ("coin_pub", 86 &coin_pub), 87 GNUNET_PQ_result_spec_string ("exchange_url", 88 &exchange_url), 89 GNUNET_PQ_result_spec_uint64 ("rtransaction_id", 90 &rtransaction_id), 91 GNUNET_PQ_result_spec_string ("reason", 92 &reason), 93 TALER_PQ_result_spec_amount_with_currency ("refund_amount", 94 &refund_amount), 95 GNUNET_PQ_result_spec_auto_from_type ("pending", 96 &pending8), 97 GNUNET_PQ_result_spec_end 98 }; 99 100 if (GNUNET_OK != 101 GNUNET_PQ_extract_result (result, 102 rs, 103 i)) 104 { 105 GNUNET_break (0); 106 lrdc->qs = GNUNET_DB_STATUS_HARD_ERROR; 107 return; 108 } 109 lrdc->rc (lrdc->rc_cls, 110 refund_serial, 111 timestamp, 112 &coin_pub, 113 exchange_url, 114 rtransaction_id, 115 reason, 116 &refund_amount, 117 0 != pending8); 118 GNUNET_PQ_cleanup_result (rs); 119 } 120 lrdc->qs = num_results; 121 } 122 123 124 enum GNUNET_DB_QueryStatus 125 TMH_PG_lookup_refunds_detailed (void *cls, 126 const char *instance_id, 127 const struct TALER_PrivateContractHashP *h_contract_terms, 128 TALER_MERCHANTDB_RefundDetailCallback rc, 129 void *rc_cls) 130 { 131 struct PostgresClosure *pg = cls; 132 struct GNUNET_PQ_QueryParam params[] = { 133 GNUNET_PQ_query_param_string (instance_id), 134 GNUNET_PQ_query_param_auto_from_type (h_contract_terms), 135 GNUNET_PQ_query_param_end 136 }; 137 struct LookupRefundsDetailedContext lrdc = { 138 .rc = rc, 139 .rc_cls = rc_cls, 140 .pg = pg 141 }; 142 enum GNUNET_DB_QueryStatus qs; 143 144 /* no preflight check here, run in transaction by caller! */ 145 TALER_LOG_DEBUG ("Looking for refund %s + %s\n", 146 GNUNET_h2s (&h_contract_terms->hash), 147 instance_id); 148 149 check_connection (pg); 150 PREPARE (pg, 151 "lookup_refunds_detailed", 152 "SELECT" 153 " ref.refund_serial" 154 ",ref.refund_timestamp" 155 ",dep.coin_pub" 156 ",mcon.exchange_url" 157 ",ref.rtransaction_id" 158 ",ref.reason" 159 ",ref.refund_amount" 160 ",merchant_refund_proofs.exchange_sig IS NULL AS pending" 161 " FROM merchant_deposit_confirmations mcon" 162 " JOIN merchant_deposits dep" 163 " USING (deposit_confirmation_serial)" 164 " JOIN merchant_refunds ref" 165 " USING (order_serial, coin_pub)" 166 " LEFT JOIN merchant_refund_proofs" 167 " USING (refund_serial)" 168 " WHERE mcon.order_serial=" 169 " (SELECT order_serial" 170 " FROM merchant_contract_terms" 171 " WHERE h_contract_terms=$2" 172 " AND merchant_serial=" 173 " (SELECT merchant_serial" 174 " FROM merchant_instances" 175 " WHERE merchant_id=$1))"); 176 177 qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, 178 "lookup_refunds_detailed", 179 params, 180 &lookup_refunds_detailed_cb, 181 &lrdc); 182 if (0 >= qs) 183 return qs; 184 return lrdc.qs; 185 }