lookup_pending_deposits.c (5777B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2023, 2025 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_pending_deposits.c 18 * @brief Implementation of the lookup_pending_deposits function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "platform.h" 22 #include <taler/taler_pq_lib.h> 23 #include "merchant-database/lookup_pending_deposits.h" 24 #include "helper.h" 25 26 27 /** 28 * Context for lookup_pending_deposits(). 29 */ 30 struct LookupDepositsContext 31 { 32 /** 33 * Function to call with the results. 34 */ 35 TALER_MERCHANTDB_PendingDepositsCallback cb; 36 37 /** 38 * Closure for @e cb. 39 */ 40 void *cb_cls; 41 42 /** 43 * Database context. 44 */ 45 struct TALER_MERCHANTDB_PostgresContext *pg; 46 47 /** 48 * Set to the return value on errors. 49 */ 50 enum GNUNET_DB_QueryStatus qs; 51 52 }; 53 54 55 /** 56 * Function to be called with the results of a SELECT statement 57 * that has returned @a num_results results about instances. 58 * 59 * @param cls of type `struct LookupDepositsContext *` 60 * @param result the postgres result 61 * @param num_results the number of results in @a result 62 */ 63 static void 64 lookup_deposits_cb (void *cls, 65 PGresult *result, 66 unsigned int num_results) 67 { 68 struct LookupDepositsContext *ldc = cls; 69 70 for (unsigned int i = 0; i < num_results; i++) 71 { 72 uint64_t deposit_serial; 73 struct GNUNET_TIME_Absolute wire_deadline; 74 struct GNUNET_TIME_Absolute retry_time; 75 struct TALER_PrivateContractHashP h_contract_terms; 76 struct TALER_MerchantPrivateKeyP merchant_priv; 77 char *instance_id; 78 struct TALER_MerchantWireHashP h_wire; 79 struct TALER_Amount amount_with_fee; 80 struct TALER_Amount deposit_fee; 81 struct TALER_CoinSpendPublicKeyP coin_pub; 82 struct GNUNET_PQ_ResultSpec rs[] = { 83 GNUNET_PQ_result_spec_uint64 ("out_deposit_serial", 84 &deposit_serial), 85 GNUNET_PQ_result_spec_auto_from_type ("out_h_contract_terms", 86 &h_contract_terms), 87 GNUNET_PQ_result_spec_auto_from_type ("out_merchant_priv", 88 &merchant_priv), 89 GNUNET_PQ_result_spec_string ("out_merchant_id", 90 &instance_id), 91 GNUNET_PQ_result_spec_absolute_time ("out_wire_transfer_deadline", 92 &wire_deadline), 93 GNUNET_PQ_result_spec_absolute_time ("out_retry_time", 94 &retry_time), 95 GNUNET_PQ_result_spec_auto_from_type ("out_h_wire", 96 &h_wire), 97 TALER_PQ_result_spec_amount_with_currency ("out_amount_with_fee", 98 &amount_with_fee), 99 TALER_PQ_result_spec_amount_with_currency ("out_deposit_fee", 100 &deposit_fee), 101 GNUNET_PQ_result_spec_auto_from_type ("out_coin_pub", 102 &coin_pub), 103 GNUNET_PQ_result_spec_end 104 }; 105 106 if (GNUNET_OK != 107 GNUNET_PQ_extract_result (result, 108 rs, 109 i)) 110 { 111 GNUNET_break (0); 112 ldc->qs = GNUNET_DB_STATUS_HARD_ERROR; 113 return; 114 } 115 ldc->cb (ldc->cb_cls, 116 deposit_serial, 117 wire_deadline, 118 retry_time, 119 &h_contract_terms, 120 &merchant_priv, 121 instance_id, 122 &h_wire, 123 &amount_with_fee, 124 &deposit_fee, 125 &coin_pub); 126 GNUNET_PQ_cleanup_result (rs); 127 } 128 } 129 130 131 enum GNUNET_DB_QueryStatus 132 TALER_MERCHANTDB_lookup_pending_deposits ( 133 struct TALER_MERCHANTDB_PostgresContext *pg, 134 const char *exchange_url, 135 uint64_t limit, 136 bool allow_future, 137 TALER_MERCHANTDB_PendingDepositsCallback cb, 138 void *cb_cls) 139 { 140 struct LookupDepositsContext ldc = { 141 .cb = cb, 142 .cb_cls = cb_cls, 143 .pg = pg 144 }; 145 struct GNUNET_TIME_Absolute now 146 = GNUNET_TIME_absolute_get (); 147 struct GNUNET_PQ_QueryParam params[] = { 148 GNUNET_PQ_query_param_string (exchange_url), 149 GNUNET_PQ_query_param_absolute_time (&now), 150 GNUNET_PQ_query_param_uint64 (&limit), 151 GNUNET_PQ_query_param_bool (allow_future), 152 GNUNET_PQ_query_param_end 153 }; 154 enum GNUNET_DB_QueryStatus qs; 155 156 check_connection (pg); 157 PREPARE (pg, 158 "lookup_pending_deposits", 159 "SELECT" 160 " out_deposit_serial" 161 " ,out_h_contract_terms" 162 " ,out_merchant_priv" 163 " ,out_merchant_id" 164 " ,out_wire_transfer_deadline" 165 " ,out_retry_time" 166 " ,out_h_wire" 167 " ,out_amount_with_fee" 168 " ,out_deposit_fee" 169 " ,out_coin_pub" 170 " FROM merchant.lookup_pending_deposits($1, $2, $3, $4)"); 171 qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, 172 "lookup_pending_deposits", 173 params, 174 &lookup_deposits_cb, 175 &ldc); 176 if (0 > ldc.qs) 177 return ldc.qs; 178 return qs; 179 }