lookup_wire_transfer.c (6041B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022-2024 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/lookup_wire_transfer.c 18 * @brief Implementation of the lookup_wire_transfer function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "taler/taler_pq_lib.h" 22 #include "exchange-database/lookup_wire_transfer.h" 23 #include "helper.h" 24 25 /** 26 * Closure for #handle_wt_result. 27 */ 28 struct WireTransferResultContext 29 { 30 /** 31 * Function to call on each result. 32 */ 33 TALER_EXCHANGEDB_AggregationDataCallback cb; 34 35 /** 36 * Closure for @e cb. 37 */ 38 void *cb_cls; 39 40 /** 41 * Plugin context. 42 */ 43 struct TALER_EXCHANGEDB_PostgresContext *pg; 44 45 /** 46 * Set to #GNUNET_SYSERR on serious errors. 47 */ 48 enum GNUNET_GenericReturnValue status; 49 }; 50 51 52 /** 53 * Function to be called with the results of a SELECT statement 54 * that has returned @a num_results results. Helper function 55 * for #TALER_EXCHANGEDB_lookup_wire_transfer(). 56 * 57 * @param cls closure of type `struct WireTransferResultContext *` 58 * @param result the postgres result 59 * @param num_results the number of results in @a result 60 */ 61 static void 62 handle_wt_result (void *cls, 63 PGresult *result, 64 unsigned int num_results) 65 { 66 struct WireTransferResultContext *ctx = cls; 67 struct TALER_EXCHANGEDB_PostgresContext *pg = ctx->pg; 68 69 for (unsigned int i = 0; i<num_results; i++) 70 { 71 uint64_t rowid; 72 struct TALER_PrivateContractHashP h_contract_terms; 73 struct TALER_CoinSpendPublicKeyP coin_pub; 74 struct TALER_FullPaytoHashP h_payto; 75 struct TALER_MerchantPublicKeyP merchant_pub; 76 struct GNUNET_TIME_Timestamp exec_time; 77 struct TALER_Amount amount_with_fee; 78 struct TALER_Amount deposit_fee; 79 struct TALER_DenominationPublicKey denom_pub; 80 struct TALER_FullPayto payto_uri; 81 struct GNUNET_PQ_ResultSpec rs[] = { 82 GNUNET_PQ_result_spec_uint64 ("aggregation_serial_id", 83 &rowid), 84 GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms", 85 &h_contract_terms), 86 GNUNET_PQ_result_spec_string ("payto_uri", 87 &payto_uri.full_payto), 88 GNUNET_PQ_result_spec_auto_from_type ("wire_target_h_payto", 89 &h_payto), 90 TALER_PQ_result_spec_denom_pub ("denom_pub", 91 &denom_pub), 92 GNUNET_PQ_result_spec_auto_from_type ("coin_pub", 93 &coin_pub), 94 GNUNET_PQ_result_spec_auto_from_type ("merchant_pub", 95 &merchant_pub), 96 GNUNET_PQ_result_spec_timestamp ("execution_date", 97 &exec_time), 98 TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee", 99 &amount_with_fee), 100 TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit", 101 &deposit_fee), 102 GNUNET_PQ_result_spec_end 103 }; 104 105 if (GNUNET_OK != 106 GNUNET_PQ_extract_result (result, 107 rs, 108 i)) 109 { 110 GNUNET_break (0); 111 ctx->status = GNUNET_SYSERR; 112 return; 113 } 114 ctx->cb (ctx->cb_cls, 115 rowid, 116 &merchant_pub, 117 payto_uri, 118 &h_payto, 119 exec_time, 120 &h_contract_terms, 121 &denom_pub, 122 &coin_pub, 123 &amount_with_fee, 124 &deposit_fee); 125 GNUNET_PQ_cleanup_result (rs); 126 } 127 } 128 129 130 enum GNUNET_DB_QueryStatus 131 TALER_EXCHANGEDB_lookup_wire_transfer ( 132 struct TALER_EXCHANGEDB_PostgresContext *pg, 133 const struct TALER_WireTransferIdentifierRawP *wtid, 134 TALER_EXCHANGEDB_AggregationDataCallback cb, 135 void *cb_cls) 136 { 137 struct GNUNET_PQ_QueryParam params[] = { 138 GNUNET_PQ_query_param_auto_from_type (wtid), 139 GNUNET_PQ_query_param_end 140 }; 141 struct WireTransferResultContext ctx = { 142 .cb = cb, 143 .cb_cls = cb_cls, 144 .pg = pg, 145 .status = GNUNET_OK 146 }; 147 enum GNUNET_DB_QueryStatus qs; 148 149 PREPARE (pg, 150 "lookup_transactions", 151 "SELECT" 152 " aggregation_serial_id" 153 ",bdep.h_contract_terms" 154 ",payto_uri" 155 ",wt.wire_target_h_payto" 156 ",kc.coin_pub" 157 ",bdep.merchant_pub" 158 ",wire_out.execution_date" 159 ",cdep.amount_with_fee" 160 ",denom.fee_deposit" 161 ",denom.denom_pub" 162 " FROM aggregation_tracking" 163 " JOIN batch_deposits bdep" 164 " USING (batch_deposit_serial_id)" 165 " JOIN coin_deposits cdep" 166 " USING (batch_deposit_serial_id)" 167 " JOIN wire_targets wt" 168 " USING (wire_target_h_payto)" 169 " JOIN known_coins kc" 170 " USING (coin_pub)" 171 " JOIN denominations denom" 172 " USING (denominations_serial)" 173 " JOIN wire_out" 174 " USING (wtid_raw)" 175 " WHERE wtid_raw=$1;"); 176 qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, 177 "lookup_transactions", 178 params, 179 &handle_wt_result, 180 &ctx); 181 if (GNUNET_OK != ctx.status) 182 return GNUNET_DB_STATUS_HARD_ERROR; 183 return qs; 184 }