pg_get_refresh.c (6333B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022 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_refresh.c 18 * @brief Implementation of the get_refresh function for Postgres 19 * @author get_refresh 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_refresh.h" 26 #include "pg_helper.h" 27 28 29 enum GNUNET_DB_QueryStatus 30 TEH_PG_get_refresh (void *cls, 31 const struct TALER_RefreshCommitmentP *rc, 32 struct TALER_EXCHANGEDB_Refresh_v27 *refresh) 33 { 34 struct PostgresClosure *pg = cls; 35 struct GNUNET_PQ_QueryParam params[] = { 36 GNUNET_PQ_query_param_auto_from_type (rc), 37 GNUNET_PQ_query_param_end 38 }; 39 bool no_cs_r_values; 40 bool no_cs_r_choices; 41 size_t num_denom_sigs; 42 struct TALER_BlindedDenominationSignature *denom_sigs = NULL; 43 struct GNUNET_CRYPTO_CSPublicRPairP *cs_r_values = NULL; 44 uint64_t *denom_serials = NULL; 45 struct GNUNET_PQ_ResultSpec rs[] = { 46 TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee", 47 &refresh->amount_with_fee), 48 GNUNET_PQ_result_spec_auto_from_type ("old_coin_pub", 49 &refresh->coin.coin_pub), 50 GNUNET_PQ_result_spec_allow_null ( 51 GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash", 52 &refresh->coin.h_age_commitment), 53 &refresh->coin.no_age_commitment), 54 GNUNET_PQ_result_spec_auto_from_type ("old_coin_sig", 55 &refresh->coin_sig), 56 GNUNET_PQ_result_spec_auto_from_type ("refresh_seed", 57 &refresh->refresh_seed), 58 GNUNET_PQ_result_spec_uint32 ("noreveal_index", 59 &refresh->noreveal_index), 60 GNUNET_PQ_result_spec_allow_null ( 61 GNUNET_PQ_result_spec_auto_from_type ("blinding_seed", 62 &refresh->blinding_seed), 63 &refresh->no_blinding_seed), 64 GNUNET_PQ_result_spec_allow_null ( 65 TALER_PQ_result_spec_array_cs_r_pub (pg->conn, 66 "cs_r_values", 67 &refresh->num_cs_r_values, 68 &cs_r_values), 69 &no_cs_r_values), 70 GNUNET_PQ_result_spec_allow_null ( 71 GNUNET_PQ_result_spec_uint64 ("cs_r_choices", 72 &refresh->cs_r_choices), 73 &no_cs_r_choices), 74 GNUNET_PQ_result_spec_auto_from_type ("planchets_h", 75 &refresh->planchets_h), 76 GNUNET_PQ_result_spec_auto_from_type ("selected_h", 77 &refresh->selected_h), 78 GNUNET_PQ_result_spec_array_uint64 (pg->conn, 79 "denom_serials", 80 &refresh->num_coins, 81 &denom_serials), 82 TALER_PQ_result_spec_array_blinded_denom_sig (pg->conn, 83 "denom_sigs", 84 &num_denom_sigs, 85 &denom_sigs), 86 GNUNET_PQ_result_spec_end 87 }; 88 enum GNUNET_DB_QueryStatus qs; 89 90 memset (&refresh->coin.denom_sig, 91 0, 92 sizeof (refresh->coin.denom_sig)); 93 PREPARE (pg, 94 "get_refresh", 95 "SELECT" 96 " amount_with_fee" 97 ",old_coin_pub" 98 ",kc.age_commitment_hash AS age_commitment_hash" 99 ",old_coin_sig" 100 ",refresh_seed" 101 ",noreveal_index" 102 ",blinding_seed" 103 ",cs_r_values" 104 ",cs_r_choices" 105 ",planchets_h" 106 ",selected_h" 107 ",denom_serials" 108 ",denom_sigs" 109 " FROM refresh" 110 " JOIN known_coins kc" 111 " ON (old_coin_pub = kc.coin_pub)" 112 " WHERE rc = $1;" 113 ); 114 qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 115 "get_refresh", 116 params, 117 rs); 118 GNUNET_PQ_cleanup_query_params_closures (params); 119 if (0 > qs) 120 { 121 GNUNET_break (0); 122 GNUNET_PQ_cleanup_result (rs); 123 return qs; 124 } 125 if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs) 126 { 127 GNUNET_PQ_cleanup_result (rs); 128 return qs; 129 } 130 if (refresh->num_coins != num_denom_sigs) 131 { 132 GNUNET_break (0); 133 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 134 "got inconsistent number of entries in refresh from DB: " 135 "num_coins=%ld, num_denom_sigs=%ld\n", 136 refresh->num_coins, 137 num_denom_sigs); 138 GNUNET_PQ_cleanup_result (rs); 139 return GNUNET_DB_STATUS_HARD_ERROR; 140 } 141 if (refresh->no_blinding_seed != no_cs_r_values) 142 { 143 GNUNET_break (0); 144 GNUNET_PQ_cleanup_result (rs); 145 return GNUNET_DB_STATUS_HARD_ERROR; 146 } 147 if (no_cs_r_choices != no_cs_r_values) 148 { 149 GNUNET_break (0); 150 GNUNET_PQ_cleanup_result (rs); 151 return GNUNET_DB_STATUS_HARD_ERROR; 152 } 153 if (no_cs_r_values) 154 { 155 refresh->cs_r_values = NULL; 156 refresh->num_cs_r_values = 0; 157 } 158 if (refresh->coin.no_age_commitment) 159 memset (&refresh->coin.h_age_commitment, 160 0, 161 sizeof(refresh->coin.h_age_commitment)); 162 refresh->rc = *rc; 163 /* move the result arrays */ 164 refresh->denom_sigs = denom_sigs; 165 refresh->denom_serials = denom_serials; 166 refresh->cs_r_values = cs_r_values; 167 denom_sigs = NULL; 168 denom_serials = NULL; 169 cs_r_values = NULL; 170 GNUNET_PQ_cleanup_result (rs); 171 return qs; 172 }