pg_get_deposit_confirmations.c (7417B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022-2023 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 /** 18 * @file pg_get_deposit_confirmations.c 19 * @brief Low-level (statement-level) Postgres database access for the exchange 20 * @author Christian Grothoff 21 */ 22 #include "taler/platform.h" 23 #include "taler/taler_error_codes.h" 24 #include "taler/taler_dbevents.h" 25 #include "taler/taler_pq_lib.h" 26 #include "pg_get_deposit_confirmations.h" 27 #include "pg_helper.h" 28 29 30 /** 31 * Closure for #deposit_confirmation_cb(). 32 */ 33 struct DepositConfirmationContext 34 { 35 36 /** 37 * Function to call for each deposit confirmation. 38 */ 39 TALER_AUDITORDB_DepositConfirmationCallback cb; 40 41 /** 42 * Closure for @e cb 43 */ 44 void *cb_cls; 45 46 /** 47 * Plugin context. 48 */ 49 struct PostgresClosure *pg; 50 51 /** 52 * Query status to return. 53 */ 54 enum GNUNET_DB_QueryStatus qs; 55 }; 56 57 58 /** 59 * Helper function for #TAH_PG_get_deposit_confirmations(). 60 * To be called with the results of a SELECT statement 61 * that has returned @a num_results results. 62 * 63 * @param cls closure of type `struct DepositConfirmationContext *` 64 * @param result the postgres result 65 * @param num_results the number of results in @a result 66 */ 67 static void 68 deposit_confirmation_cb (void *cls, 69 PGresult *result, 70 unsigned int num_results) 71 { 72 struct DepositConfirmationContext *dcc = cls; 73 struct PostgresClosure *pg = dcc->pg; 74 75 for (unsigned int i = 0; i < num_results; i++) 76 { 77 struct TALER_AUDITORDB_DepositConfirmation dc = { 0 }; 78 struct TALER_CoinSpendPublicKeyP *coin_pubs = NULL; 79 struct TALER_CoinSpendSignatureP *coin_sigs = NULL; 80 size_t num_pubs = 0; 81 size_t num_sigs = 0; 82 struct GNUNET_PQ_ResultSpec rs[] = { 83 GNUNET_PQ_result_spec_uint64 ("row_id", 84 &dc.row_id), 85 GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms", 86 &dc.h_contract_terms), 87 GNUNET_PQ_result_spec_auto_from_type ("h_policy", 88 &dc.h_policy), 89 GNUNET_PQ_result_spec_auto_from_type ("h_wire", 90 &dc.h_wire), 91 GNUNET_PQ_result_spec_timestamp ("exchange_timestamp", 92 &dc.exchange_timestamp), 93 GNUNET_PQ_result_spec_timestamp ("refund_deadline", 94 &dc.refund_deadline), 95 GNUNET_PQ_result_spec_timestamp ("wire_deadline", 96 &dc.wire_deadline), 97 TALER_PQ_RESULT_SPEC_AMOUNT ("total_without_fee", 98 &dc.total_without_fee), 99 GNUNET_PQ_result_spec_auto_array_from_type (pg->conn, 100 "coin_pubs", 101 &num_pubs, 102 coin_pubs), 103 GNUNET_PQ_result_spec_auto_array_from_type (pg->conn, 104 "coin_sigs", 105 &num_sigs, 106 coin_sigs), 107 GNUNET_PQ_result_spec_auto_from_type ("merchant_pub", 108 &dc.merchant), 109 GNUNET_PQ_result_spec_auto_from_type ("exchange_sig", 110 &dc.exchange_sig), 111 GNUNET_PQ_result_spec_auto_from_type ("exchange_pub", 112 &dc.exchange_pub), 113 GNUNET_PQ_result_spec_auto_from_type ("master_sig", 114 &dc.master_sig), 115 GNUNET_PQ_result_spec_bool ("suppressed", 116 &dc.suppressed), 117 GNUNET_PQ_result_spec_end 118 }; 119 enum GNUNET_GenericReturnValue rval; 120 121 if (GNUNET_OK != 122 GNUNET_PQ_extract_result (result, 123 rs, 124 i)) 125 { 126 GNUNET_break (0); 127 dcc->qs = GNUNET_DB_STATUS_HARD_ERROR; 128 return; 129 } 130 if (num_sigs != num_pubs) 131 { 132 GNUNET_break (0); 133 dcc->qs = GNUNET_DB_STATUS_HARD_ERROR; 134 GNUNET_PQ_cleanup_result (rs); 135 return; 136 } 137 dcc->qs = i + 1; 138 dc.coin_pubs = coin_pubs; 139 dc.coin_sigs = coin_sigs; 140 dc.num_coins = num_sigs; 141 rval = dcc->cb (dcc->cb_cls, 142 &dc); 143 GNUNET_PQ_cleanup_result (rs); 144 if (GNUNET_OK != rval) 145 break; 146 } 147 } 148 149 150 enum GNUNET_DB_QueryStatus 151 TAH_PG_get_deposit_confirmations ( 152 void *cls, 153 int64_t limit, 154 uint64_t offset, 155 bool return_suppressed, 156 TALER_AUDITORDB_DepositConfirmationCallback cb, 157 void *cb_cls) 158 { 159 struct PostgresClosure *pg = cls; 160 uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit); 161 struct GNUNET_PQ_QueryParam params[] = { 162 GNUNET_PQ_query_param_uint64 (&offset), 163 GNUNET_PQ_query_param_bool (return_suppressed), 164 GNUNET_PQ_query_param_uint64 (&plimit), 165 GNUNET_PQ_query_param_end 166 }; 167 struct DepositConfirmationContext dcc = { 168 .cb = cb, 169 .cb_cls = cb_cls, 170 .pg = pg 171 }; 172 enum GNUNET_DB_QueryStatus qs; 173 174 PREPARE (pg, 175 "auditor_deposit_confirmation_select_desc", 176 "SELECT" 177 " row_id" 178 ",h_contract_terms" 179 ",h_policy" 180 ",h_wire" 181 ",exchange_timestamp" 182 ",wire_deadline" 183 ",refund_deadline" 184 ",total_without_fee" 185 ",coin_pubs" 186 ",coin_sigs" 187 ",merchant_pub" 188 ",exchange_sig" 189 ",exchange_pub" 190 ",master_sig" 191 ",suppressed" 192 " FROM auditor_deposit_confirmations" 193 " WHERE (row_id < $1)" 194 " AND ($2 OR NOT suppressed)" 195 " ORDER BY row_id DESC" 196 " LIMIT $3" 197 ); 198 PREPARE (pg, 199 "auditor_deposit_confirmation_select_asc", 200 "SELECT" 201 " row_id" 202 ",h_contract_terms" 203 ",h_policy" 204 ",h_wire" 205 ",exchange_timestamp" 206 ",wire_deadline" 207 ",refund_deadline" 208 ",total_without_fee" 209 ",coin_pubs" 210 ",coin_sigs" 211 ",merchant_pub" 212 ",exchange_sig" 213 ",exchange_pub" 214 ",master_sig" 215 ",suppressed" 216 " FROM auditor_deposit_confirmations" 217 " WHERE (row_id > $1)" 218 " AND ($2 OR NOT suppressed)" 219 " ORDER BY row_id ASC" 220 " LIMIT $3" 221 ); 222 qs = GNUNET_PQ_eval_prepared_multi_select ( 223 pg->conn, 224 (limit > 0) 225 ? "auditor_deposit_confirmation_select_asc" 226 : "auditor_deposit_confirmation_select_desc", 227 params, 228 &deposit_confirmation_cb, 229 &dcc); 230 if (qs > 0) 231 return dcc.qs; 232 GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs); 233 return qs; 234 }