lookup_refunds_detailed.c (5991B)
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 src/backenddb/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_pq_lib.h> 23 #include "merchant-database/lookup_refunds_detailed.h" 24 #include "helper.h" 25 26 /** 27 * Closure for #lookup_refunds_detailed_cb(). 28 */ 29 struct LookupRefundsDetailedContext 30 { 31 /** 32 * Function to call for each refund. 33 */ 34 TALER_MERCHANTDB_RefundDetailCallback rc; 35 36 /** 37 * Closure for @e rc. 38 */ 39 void *rc_cls; 40 41 /** 42 * Plugin context. 43 */ 44 struct TALER_MERCHANTDB_PostgresContext *pg; 45 46 /** 47 * Transaction result. 48 */ 49 enum GNUNET_DB_QueryStatus qs; 50 }; 51 52 53 /** 54 * Function to be called with the results of a SELECT statement 55 * that has returned @a num_results results. 56 * 57 * @param cls of type `struct GetRefundsContext *` 58 * @param result the postgres result 59 * @param num_results the number of results in @a result 60 */ 61 static void 62 lookup_refunds_detailed_cb (void *cls, 63 PGresult *result, 64 unsigned int num_results) 65 { 66 struct LookupRefundsDetailedContext *lrdc = cls; 67 68 for (unsigned int i = 0; i<num_results; i++) 69 { 70 uint64_t refund_serial; 71 struct GNUNET_TIME_Timestamp timestamp; 72 struct TALER_CoinSpendPublicKeyP coin_pub; 73 uint64_t rtransaction_id; 74 struct TALER_Amount refund_amount; 75 char *reason; 76 char *exchange_url; 77 uint8_t pending8; 78 struct GNUNET_PQ_ResultSpec rs[] = { 79 GNUNET_PQ_result_spec_uint64 ("refund_serial", 80 &refund_serial), 81 GNUNET_PQ_result_spec_timestamp ("refund_timestamp", 82 ×tamp), 83 GNUNET_PQ_result_spec_auto_from_type ("coin_pub", 84 &coin_pub), 85 GNUNET_PQ_result_spec_string ("exchange_url", 86 &exchange_url), 87 GNUNET_PQ_result_spec_uint64 ("rtransaction_id", 88 &rtransaction_id), 89 GNUNET_PQ_result_spec_string ("reason", 90 &reason), 91 TALER_PQ_result_spec_amount_with_currency ("refund_amount", 92 &refund_amount), 93 GNUNET_PQ_result_spec_auto_from_type ("pending", 94 &pending8), 95 GNUNET_PQ_result_spec_end 96 }; 97 98 if (GNUNET_OK != 99 GNUNET_PQ_extract_result (result, 100 rs, 101 i)) 102 { 103 GNUNET_break (0); 104 lrdc->qs = GNUNET_DB_STATUS_HARD_ERROR; 105 return; 106 } 107 lrdc->rc (lrdc->rc_cls, 108 refund_serial, 109 timestamp, 110 &coin_pub, 111 exchange_url, 112 rtransaction_id, 113 reason, 114 &refund_amount, 115 0 != pending8); 116 GNUNET_PQ_cleanup_result (rs); 117 } 118 lrdc->qs = num_results; 119 } 120 121 122 enum GNUNET_DB_QueryStatus 123 TALER_MERCHANTDB_lookup_refunds_detailed ( 124 struct TALER_MERCHANTDB_PostgresContext *pg, 125 const char *instance_id, 126 const struct TALER_PrivateContractHashP * 127 h_contract_terms, 128 TALER_MERCHANTDB_RefundDetailCallback rc, 129 void *rc_cls) 130 { 131 struct GNUNET_PQ_QueryParam params[] = { 132 GNUNET_PQ_query_param_auto_from_type (h_contract_terms), 133 GNUNET_PQ_query_param_end 134 }; 135 struct LookupRefundsDetailedContext lrdc = { 136 .rc = rc, 137 .rc_cls = rc_cls, 138 .pg = pg 139 }; 140 enum GNUNET_DB_QueryStatus qs; 141 142 GNUNET_assert (NULL != pg->current_merchant_id); 143 GNUNET_assert (0 == strcmp (instance_id, 144 pg->current_merchant_id)); 145 /* no preflight check here, run in transaction by caller! */ 146 TALER_LOG_DEBUG ("Looking for refund %s + %s\n", 147 GNUNET_h2s (&h_contract_terms->hash), 148 instance_id); 149 150 check_connection (pg); 151 TMH_PQ_prepare_anon (pg, 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=$1)"); 172 173 qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, 174 "", 175 params, 176 &lookup_refunds_detailed_cb, 177 &lrdc); 178 if (0 >= qs) 179 return qs; 180 return lrdc.qs; 181 }