get_withdraw.c (6554B)
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 exchangedb/get_withdraw.c 18 * @brief Implementation of the get_withdraw function for Postgres 19 * @author Özgür Kesim 20 */ 21 #include "taler/taler_pq_lib.h" 22 #include "exchange-database/get_withdraw.h" 23 #include "helper.h" 24 25 26 enum GNUNET_DB_QueryStatus 27 TALER_EXCHANGEDB_get_withdraw ( 28 struct TALER_EXCHANGEDB_PostgresContext *pg, 29 const struct TALER_ReservePublicKeyP *reserve_pub, 30 const struct TALER_HashBlindedPlanchetsP *wch, 31 struct TALER_EXCHANGEDB_Withdraw *wd) 32 { 33 enum GNUNET_DB_QueryStatus ret; 34 struct GNUNET_PQ_QueryParam params[] = { 35 GNUNET_PQ_query_param_auto_from_type (reserve_pub), 36 GNUNET_PQ_query_param_auto_from_type (wch), 37 GNUNET_PQ_query_param_end 38 }; 39 struct TALER_BlindedDenominationSignature *my_denom_sigs = NULL; 40 uint64_t *my_denom_serials = NULL; 41 struct GNUNET_CRYPTO_CSPublicRPairP *my_cs_r_values = NULL; 42 size_t num_sigs = 0; 43 size_t num_coins = 0; 44 size_t num_cs_r_values = 0; 45 bool no_noreveal_index; 46 bool no_max_age; 47 bool no_selected_h; 48 bool no_blinding_seed; 49 bool no_cs_r_values; 50 bool no_cs_r_choices; 51 52 struct GNUNET_PQ_ResultSpec rs[] = { 53 GNUNET_PQ_result_spec_uint64 ("withdraw_id", 54 &wd->withdraw_id), 55 GNUNET_PQ_result_spec_auto_from_type ("planchets_h", 56 &wd->planchets_h), 57 GNUNET_PQ_result_spec_auto_from_type ("reserve_sig", 58 &wd->reserve_sig), 59 GNUNET_PQ_result_spec_auto_from_type ("reserve_pub", 60 &wd->reserve_pub), 61 GNUNET_PQ_result_spec_allow_null ( 62 GNUNET_PQ_result_spec_uint16 ("max_age", 63 &wd->max_age), 64 &no_max_age), 65 TALER_PQ_result_spec_amount ("amount_with_fee", 66 pg->currency, 67 &wd->amount_with_fee), 68 GNUNET_PQ_result_spec_allow_null ( 69 GNUNET_PQ_result_spec_uint16 ("noreveal_index", 70 &wd->noreveal_index), 71 &no_noreveal_index), 72 GNUNET_PQ_result_spec_allow_null ( 73 GNUNET_PQ_result_spec_auto_from_type ("selected_h", 74 &wd->selected_h), 75 &no_selected_h), 76 GNUNET_PQ_result_spec_allow_null ( 77 GNUNET_PQ_result_spec_auto_from_type ("blinding_seed", 78 &wd->blinding_seed), 79 &no_blinding_seed), 80 GNUNET_PQ_result_spec_allow_null ( 81 TALER_PQ_result_spec_array_cs_r_pub ( 82 pg->conn, 83 "cs_r_values", 84 &num_cs_r_values, 85 &my_cs_r_values), 86 &no_cs_r_values), 87 GNUNET_PQ_result_spec_allow_null ( 88 GNUNET_PQ_result_spec_uint64 ("cs_r_choices", 89 &wd->cs_r_choices), 90 &no_cs_r_choices), 91 TALER_PQ_result_spec_array_blinded_denom_sig ( 92 pg->conn, 93 "denom_sigs", 94 &num_sigs, 95 &my_denom_sigs), 96 GNUNET_PQ_result_spec_array_uint64 ( 97 pg->conn, 98 "denom_serials", 99 &num_coins, 100 &my_denom_serials), 101 GNUNET_PQ_result_spec_end 102 }; 103 104 PREPARE (pg, 105 "get_withdraw", 106 "SELECT" 107 " withdraw_id" 108 ",planchets_h" 109 ",blinding_seed" 110 ",reserve_sig" 111 ",reserve_pub" 112 ",max_age" 113 ",amount_with_fee" 114 ",noreveal_index" 115 ",selected_h" 116 ",blinding_seed" 117 ",cs_r_values" 118 ",cs_r_choices" 119 ",denom_sigs" 120 ",denom_serials" 121 " FROM withdraw" 122 " WHERE reserve_pub=$1" 123 " AND planchets_h=$2;"); 124 ret = GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 125 "get_withdraw", 126 params, 127 rs); 128 if (0 > ret) 129 { 130 GNUNET_break (0); 131 GNUNET_PQ_cleanup_result (rs); 132 return ret; 133 } 134 if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == ret) 135 { 136 GNUNET_PQ_cleanup_result (rs); 137 return ret; 138 } 139 140 if ((no_max_age != no_noreveal_index) || 141 (no_max_age != no_selected_h)) 142 { 143 GNUNET_break (0); 144 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 145 "got inconsistent state for max_age, noreveal_index and planchets_h in DB: " 146 "no_max_age=%s, no_noreveal_index=%s, no_selected_h=%s\n", 147 no_max_age ? "true" : "false", 148 no_noreveal_index ? "true" : "false", 149 no_selected_h ? "true" : "false"); 150 GNUNET_PQ_cleanup_result (rs); 151 return GNUNET_DB_STATUS_HARD_ERROR; 152 } 153 if (no_blinding_seed != no_cs_r_values) 154 { 155 GNUNET_break (0); 156 GNUNET_PQ_cleanup_result (rs); 157 return GNUNET_DB_STATUS_HARD_ERROR; 158 } 159 if (no_cs_r_choices != no_cs_r_values) 160 { 161 GNUNET_break (0); 162 GNUNET_PQ_cleanup_result (rs); 163 return GNUNET_DB_STATUS_HARD_ERROR; 164 } 165 if (num_coins != num_sigs) 166 { 167 GNUNET_break (0); 168 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 169 "got inconsistent number of entries in withdraw from DB: " 170 "num_coins=%ld, num_sigs=%ld\n", 171 num_coins, 172 num_sigs); 173 GNUNET_PQ_cleanup_result (rs); 174 return GNUNET_DB_STATUS_HARD_ERROR; 175 } 176 wd->age_proof_required = ! no_max_age; 177 if (no_cs_r_values) 178 { 179 wd->cs_r_values = NULL; 180 wd->num_cs_r_values = 0; 181 wd->cs_r_choices = 0; 182 } 183 wd->denom_sigs = my_denom_sigs; 184 wd->num_coins = num_coins; 185 wd->denom_serials = my_denom_serials; 186 wd->cs_r_values = my_cs_r_values; 187 wd->num_cs_r_values = num_cs_r_values; 188 /* ensure cleanup_result does not trash data we care about */ 189 my_denom_sigs = NULL; 190 my_denom_serials = NULL; 191 my_cs_r_values = NULL; 192 num_sigs = 0; 193 num_coins = 0; 194 num_cs_r_values = 0; 195 GNUNET_PQ_cleanup_result (rs); 196 return ret; 197 }