pg_get_withdraw.c (6364B)
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/pg_get_withdraw.c 18 * @brief Implementation of the get_withdraw function for Postgres 19 * @author Özgür Kesim 20 */ 21 #include "taler/platform.h" 22 #include "taler/taler_error_codes.h" 23 #include "taler/taler_dbevents.h" 24 #include "taler/taler_pq_lib.h" 25 #include "pg_get_withdraw.h" 26 #include "pg_helper.h" 27 28 29 enum GNUNET_DB_QueryStatus 30 TEH_PG_get_withdraw ( 31 void *cls, 32 const struct TALER_HashBlindedPlanchetsP *wch, 33 struct TALER_EXCHANGEDB_Withdraw *wd) 34 { 35 enum GNUNET_DB_QueryStatus ret; 36 struct PostgresClosure *pg = cls; 37 struct GNUNET_PQ_QueryParam params[] = { 38 GNUNET_PQ_query_param_auto_from_type (wch), 39 GNUNET_PQ_query_param_end 40 }; 41 struct TALER_BlindedDenominationSignature *my_denom_sigs = NULL; 42 uint64_t *my_denom_serials = NULL; 43 struct GNUNET_CRYPTO_CSPublicRPairP *my_cs_r_values = NULL; 44 size_t num_sigs = 0; 45 size_t num_coins = 0; 46 size_t num_cs_r_values = 0; 47 bool no_noreveal_index; 48 bool no_max_age; 49 bool no_selected_h; 50 bool no_blinding_seed; 51 bool no_cs_r_values; 52 bool no_cs_r_choices; 53 54 struct GNUNET_PQ_ResultSpec rs[] = { 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 " planchets_h" 108 ",blinding_seed" 109 ",reserve_sig" 110 ",reserve_pub" 111 ",max_age" 112 ",amount_with_fee" 113 ",noreveal_index" 114 ",selected_h" 115 ",blinding_seed" 116 ",cs_r_values" 117 ",cs_r_choices" 118 ",denom_sigs" 119 ",denom_serials" 120 " FROM withdraw" 121 " WHERE planchets_h=$1;"); 122 ret = GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 123 "get_withdraw", 124 params, 125 rs); 126 if (0 > ret) 127 { 128 GNUNET_break (0); 129 GNUNET_PQ_cleanup_result (rs); 130 return ret; 131 } 132 if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == ret) 133 { 134 GNUNET_PQ_cleanup_result (rs); 135 return ret; 136 } 137 138 if ((no_max_age != no_noreveal_index) || 139 (no_max_age != no_selected_h)) 140 { 141 GNUNET_break (0); 142 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 143 "got inconsistent state for max_age, noreveal_index and planchets_h in DB: " 144 "no_max_age=%s, no_noreveal_index=%s, no_selected_h=%s\n", 145 no_max_age ? "true" : "false", 146 no_noreveal_index ? "true" : "false", 147 no_selected_h ? "true" : "false"); 148 GNUNET_PQ_cleanup_result (rs); 149 return GNUNET_DB_STATUS_HARD_ERROR; 150 } 151 if (no_blinding_seed != no_cs_r_values) 152 { 153 GNUNET_break (0); 154 GNUNET_PQ_cleanup_result (rs); 155 return GNUNET_DB_STATUS_HARD_ERROR; 156 } 157 if (no_cs_r_choices != no_cs_r_values) 158 { 159 GNUNET_break (0); 160 GNUNET_PQ_cleanup_result (rs); 161 return GNUNET_DB_STATUS_HARD_ERROR; 162 } 163 if (num_coins != num_sigs) 164 { 165 GNUNET_break (0); 166 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 167 "got inconsistent number of entries in withdraw from DB: " 168 "num_coins=%ld, num_sigs=%ld\n", 169 num_coins, 170 num_sigs); 171 GNUNET_PQ_cleanup_result (rs); 172 return GNUNET_DB_STATUS_HARD_ERROR; 173 } 174 wd->age_proof_required = ! no_max_age; 175 if (no_cs_r_values) 176 { 177 wd->cs_r_values = NULL; 178 wd->num_cs_r_values = 0; 179 wd->cs_r_choices = 0; 180 } 181 wd->denom_sigs = my_denom_sigs; 182 wd->num_coins = num_coins; 183 wd->denom_serials = my_denom_serials; 184 wd->cs_r_values = my_cs_r_values; 185 wd->num_cs_r_values = num_cs_r_values; 186 /* ensure cleanup_result does not trash data we care about */ 187 my_denom_sigs = NULL; 188 my_denom_serials = NULL; 189 my_cs_r_values = NULL; 190 num_sigs = 0; 191 num_coins = 0; 192 num_cs_r_values = 0; 193 GNUNET_PQ_cleanup_result (rs); 194 return ret; 195 }