pg_select_recoup_above_serial_id.c (5909B)
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_select_recoup_above_serial_id.c 18 * @brief Implementation of the select_recoup_above_serial_id function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "taler/taler_pq_lib.h" 22 #include "taler/exchange-database/select_recoup_above_serial_id.h" 23 #include "helper.h" 24 25 26 /** 27 * Closure for #recoup_serial_helper_cb(). 28 */ 29 struct RecoupSerialContext 30 { 31 32 /** 33 * Callback to call. 34 */ 35 TALER_EXCHANGEDB_RecoupCallback cb; 36 37 /** 38 * Closure for @e cb. 39 */ 40 void *cb_cls; 41 42 /** 43 * Plugin context. 44 */ 45 struct TALER_EXCHANGEDB_PostgresContext *pg; 46 47 /** 48 * Status code, set to #GNUNET_SYSERR on hard errors. 49 */ 50 enum GNUNET_GenericReturnValue status; 51 }; 52 53 54 /** 55 * Helper function to be called with the results of a SELECT statement 56 * that has returned @a num_results results. 57 * 58 * @param cls closure of type `struct RecoupSerialContext` 59 * @param result the postgres result 60 * @param num_results the number of results in @a result 61 */ 62 static void 63 recoup_serial_helper_cb (void *cls, 64 PGresult *result, 65 unsigned int num_results) 66 { 67 struct RecoupSerialContext *psc = cls; 68 struct TALER_EXCHANGEDB_PostgresContext *pg = psc->pg; 69 70 for (unsigned int i = 0; i<num_results; i++) 71 { 72 uint64_t rowid; 73 struct TALER_ReservePublicKeyP reserve_pub; 74 struct TALER_CoinPublicInfo coin; 75 struct TALER_CoinSpendSignatureP coin_sig; 76 union GNUNET_CRYPTO_BlindingSecretP coin_blind; 77 struct TALER_Amount amount; 78 struct TALER_DenominationPublicKey denom_pub; 79 struct GNUNET_TIME_Timestamp timestamp; 80 struct GNUNET_PQ_ResultSpec rs[] = { 81 GNUNET_PQ_result_spec_uint64 ("recoup_uuid", 82 &rowid), 83 GNUNET_PQ_result_spec_timestamp ("recoup_timestamp", 84 ×tamp), 85 GNUNET_PQ_result_spec_auto_from_type ("reserve_pub", 86 &reserve_pub), 87 GNUNET_PQ_result_spec_auto_from_type ("coin_pub", 88 &coin.coin_pub), 89 TALER_PQ_result_spec_denom_pub ("denom_pub", 90 &denom_pub), 91 GNUNET_PQ_result_spec_auto_from_type ("coin_sig", 92 &coin_sig), 93 GNUNET_PQ_result_spec_auto_from_type ("coin_blind", 94 &coin_blind), 95 GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash", 96 &coin.denom_pub_hash), 97 GNUNET_PQ_result_spec_allow_null ( 98 GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash", 99 &coin.h_age_commitment), 100 &coin.no_age_commitment), 101 TALER_PQ_result_spec_denom_sig ("denom_sig", 102 &coin.denom_sig), 103 TALER_PQ_RESULT_SPEC_AMOUNT ("amount", 104 &amount), 105 GNUNET_PQ_result_spec_end 106 }; 107 int ret; 108 109 if (GNUNET_OK != 110 GNUNET_PQ_extract_result (result, 111 rs, 112 i)) 113 { 114 GNUNET_break (0); 115 psc->status = GNUNET_SYSERR; 116 return; 117 } 118 ret = psc->cb (psc->cb_cls, 119 rowid, 120 timestamp, 121 &amount, 122 &reserve_pub, 123 &coin, 124 &denom_pub, 125 &coin_sig, 126 &coin_blind); 127 GNUNET_PQ_cleanup_result (rs); 128 if (GNUNET_OK != ret) 129 break; 130 } 131 } 132 133 134 enum GNUNET_DB_QueryStatus 135 TALER_EXCHANGEDB_select_recoup_above_serial_id ( 136 struct TALER_EXCHANGEDB_PostgresContext *pg, 137 uint64_t serial_id, 138 TALER_EXCHANGEDB_RecoupCallback cb, 139 void *cb_cls) 140 { 141 struct GNUNET_PQ_QueryParam params[] = { 142 GNUNET_PQ_query_param_uint64 (&serial_id), 143 GNUNET_PQ_query_param_end 144 }; 145 struct RecoupSerialContext psc = { 146 .cb = cb, 147 .cb_cls = cb_cls, 148 .pg = pg, 149 .status = GNUNET_OK 150 }; 151 enum GNUNET_DB_QueryStatus qs; 152 153 PREPARE (pg, 154 "recoup_get_incr", 155 "SELECT" 156 " recoup_uuid" 157 ",recoup_timestamp" 158 ",withdraw.reserve_pub" 159 ",coins.coin_pub" 160 ",coin_sig" 161 ",coin_blind" 162 ",denoms.denom_pub_hash" 163 ",coins.denom_sig" 164 ",coins.age_commitment_hash" 165 ",denoms.denom_pub" 166 ",amount" 167 " FROM recoup" 168 " JOIN known_coins coins" 169 " USING (coin_pub)" 170 " JOIN withdraw" 171 " USING (withdraw_id)" 172 " JOIN denominations denoms" 173 " ON (coins.denominations_serial = denoms.denominations_serial)" 174 " WHERE recoup_uuid>=$1" 175 " ORDER BY recoup_uuid ASC;"); 176 qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, 177 "recoup_get_incr", 178 params, 179 &recoup_serial_helper_cb, 180 &psc); 181 if (GNUNET_OK != psc.status) 182 return GNUNET_DB_STATUS_HARD_ERROR; 183 return qs; 184 }