get_refresh.c (7607B)
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/get_refresh.c 18 * @brief Implementation of the get_refresh function for Postgres 19 * @author get_refresh 20 */ 21 #include "taler/taler_pq_lib.h" 22 #include "exchange-database/get_refresh.h" 23 #include "helper.h" 24 25 26 enum GNUNET_DB_QueryStatus 27 TALER_EXCHANGEDB_get_refresh (struct TALER_EXCHANGEDB_PostgresContext *pg, 28 const struct TALER_RefreshCommitmentP *rc, 29 struct TALER_EXCHANGEDB_Refresh_vDOLDPLUS *refresh 30 ) 31 { 32 struct GNUNET_PQ_QueryParam params[] = { 33 GNUNET_PQ_query_param_auto_from_type (rc), 34 GNUNET_PQ_query_param_end 35 }; 36 bool no_cs_r_values; 37 bool no_cs_r_choices; 38 bool no_transfer_pubs; 39 size_t num_denom_sigs; 40 size_t num_transfer_pubs; 41 struct TALER_BlindedDenominationSignature *denom_sigs = NULL; 42 struct GNUNET_CRYPTO_CSPublicRPairP *cs_r_values = NULL; 43 struct TALER_TransferPublicKeyP *transfer_pubs = 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_allow_null ( 79 GNUNET_PQ_result_spec_array_fixed_size (pg->conn, 80 "transfer_pubs", 81 sizeof(*transfer_pubs), 82 &num_transfer_pubs, 83 (void **) &transfer_pubs), 84 &no_transfer_pubs), 85 GNUNET_PQ_result_spec_array_uint64 (pg->conn, 86 "denom_serials", 87 &refresh->num_coins, 88 &denom_serials), 89 TALER_PQ_result_spec_array_blinded_denom_sig (pg->conn, 90 "denom_sigs", 91 &num_denom_sigs, 92 &denom_sigs), 93 GNUNET_PQ_result_spec_bool ("revealed", 94 &refresh->revealed), 95 GNUNET_PQ_result_spec_end 96 }; 97 enum GNUNET_DB_QueryStatus qs; 98 99 memset (&refresh->coin.denom_sig, 100 0, 101 sizeof (refresh->coin.denom_sig)); 102 PREPARE (pg, 103 "get_refresh", 104 "SELECT" 105 " amount_with_fee" 106 ",old_coin_pub" 107 ",kc.age_commitment_hash AS age_commitment_hash" 108 ",old_coin_sig" 109 ",refresh_seed" 110 ",noreveal_index" 111 ",blinding_seed" 112 ",cs_r_values" 113 ",cs_r_choices" 114 ",planchets_h" 115 ",transfer_pubs" 116 ",selected_h" 117 ",denom_serials" 118 ",denom_sigs" 119 ",revealed" 120 " FROM refresh" 121 " JOIN known_coins kc" 122 " ON (old_coin_pub = kc.coin_pub)" 123 " WHERE rc = $1;" 124 ); 125 qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 126 "get_refresh", 127 params, 128 rs); 129 GNUNET_PQ_cleanup_query_params_closures (params); 130 if (0 > qs) 131 { 132 GNUNET_break (0); 133 GNUNET_PQ_cleanup_result (rs); 134 return qs; 135 } 136 if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs) 137 { 138 GNUNET_PQ_cleanup_result (rs); 139 return qs; 140 } 141 if (refresh->num_coins != num_denom_sigs) 142 { 143 GNUNET_break (0); 144 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 145 "got inconsistent number of entries in refresh from DB: " 146 "num_coins=%ld, num_denom_sigs=%ld\n", 147 refresh->num_coins, 148 num_denom_sigs); 149 GNUNET_PQ_cleanup_result (rs); 150 return GNUNET_DB_STATUS_HARD_ERROR; 151 } 152 if (no_transfer_pubs) 153 { 154 refresh->is_v27_refresh = true; 155 refresh->transfer_pubs = NULL; 156 } 157 else 158 { 159 if (num_transfer_pubs != refresh->num_coins) 160 { 161 GNUNET_break (0); 162 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, 163 "got inconsistent number of transfer_pubs in refresh from DB: " 164 "num_coins=%ld, num_transfer_pubs=%ld\n", 165 refresh->num_coins, 166 num_transfer_pubs); 167 GNUNET_PQ_cleanup_result (rs); 168 return GNUNET_DB_STATUS_HARD_ERROR; 169 } 170 refresh->is_v27_refresh = false; 171 refresh->transfer_pubs = transfer_pubs; 172 } 173 if (refresh->no_blinding_seed != no_cs_r_values) 174 { 175 GNUNET_break (0); 176 GNUNET_PQ_cleanup_result (rs); 177 return GNUNET_DB_STATUS_HARD_ERROR; 178 } 179 if (no_cs_r_choices != no_cs_r_values) 180 { 181 GNUNET_break (0); 182 GNUNET_PQ_cleanup_result (rs); 183 return GNUNET_DB_STATUS_HARD_ERROR; 184 } 185 if (no_cs_r_values) 186 { 187 refresh->cs_r_values = NULL; 188 refresh->num_cs_r_values = 0; 189 } 190 if (refresh->coin.no_age_commitment) 191 memset (&refresh->coin.h_age_commitment, 192 0, 193 sizeof(refresh->coin.h_age_commitment)); 194 refresh->rc = *rc; 195 /* move the result arrays */ 196 refresh->denom_sigs = denom_sigs; 197 refresh->denom_serials = denom_serials; 198 refresh->cs_r_values = cs_r_values; 199 transfer_pubs = NULL; 200 denom_sigs = NULL; 201 denom_serials = NULL; 202 cs_r_values = NULL; 203 GNUNET_PQ_cleanup_result (rs); 204 return qs; 205 }