pg_select_recoup_above_serial_id.c (5948B)
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/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_select_recoup_above_serial_id.h" 26 #include "pg_helper.h" 27 28 29 /** 30 * Closure for #recoup_serial_helper_cb(). 31 */ 32 struct RecoupSerialContext 33 { 34 35 /** 36 * Callback to call. 37 */ 38 TALER_EXCHANGEDB_RecoupCallback cb; 39 40 /** 41 * Closure for @e cb. 42 */ 43 void *cb_cls; 44 45 /** 46 * Plugin context. 47 */ 48 struct PostgresClosure *pg; 49 50 /** 51 * Status code, set to #GNUNET_SYSERR on hard errors. 52 */ 53 enum GNUNET_GenericReturnValue status; 54 }; 55 56 57 /** 58 * Helper function to be called with the results of a SELECT statement 59 * that has returned @a num_results results. 60 * 61 * @param cls closure of type `struct RecoupSerialContext` 62 * @param result the postgres result 63 * @param num_results the number of results in @a result 64 */ 65 static void 66 recoup_serial_helper_cb (void *cls, 67 PGresult *result, 68 unsigned int num_results) 69 { 70 struct RecoupSerialContext *psc = cls; 71 struct PostgresClosure *pg = psc->pg; 72 73 for (unsigned int i = 0; i<num_results; i++) 74 { 75 uint64_t rowid; 76 struct TALER_ReservePublicKeyP reserve_pub; 77 struct TALER_CoinPublicInfo coin; 78 struct TALER_CoinSpendSignatureP coin_sig; 79 union GNUNET_CRYPTO_BlindingSecretP coin_blind; 80 struct TALER_Amount amount; 81 struct TALER_DenominationPublicKey denom_pub; 82 struct GNUNET_TIME_Timestamp timestamp; 83 struct GNUNET_PQ_ResultSpec rs[] = { 84 GNUNET_PQ_result_spec_uint64 ("recoup_uuid", 85 &rowid), 86 GNUNET_PQ_result_spec_timestamp ("recoup_timestamp", 87 ×tamp), 88 GNUNET_PQ_result_spec_auto_from_type ("reserve_pub", 89 &reserve_pub), 90 GNUNET_PQ_result_spec_auto_from_type ("coin_pub", 91 &coin.coin_pub), 92 TALER_PQ_result_spec_denom_pub ("denom_pub", 93 &denom_pub), 94 GNUNET_PQ_result_spec_auto_from_type ("coin_sig", 95 &coin_sig), 96 GNUNET_PQ_result_spec_auto_from_type ("coin_blind", 97 &coin_blind), 98 GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash", 99 &coin.denom_pub_hash), 100 GNUNET_PQ_result_spec_allow_null ( 101 GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash", 102 &coin.h_age_commitment), 103 &coin.no_age_commitment), 104 TALER_PQ_result_spec_denom_sig ("denom_sig", 105 &coin.denom_sig), 106 TALER_PQ_RESULT_SPEC_AMOUNT ("amount", 107 &amount), 108 GNUNET_PQ_result_spec_end 109 }; 110 int ret; 111 112 if (GNUNET_OK != 113 GNUNET_PQ_extract_result (result, 114 rs, 115 i)) 116 { 117 GNUNET_break (0); 118 psc->status = GNUNET_SYSERR; 119 return; 120 } 121 ret = psc->cb (psc->cb_cls, 122 rowid, 123 timestamp, 124 &amount, 125 &reserve_pub, 126 &coin, 127 &denom_pub, 128 &coin_sig, 129 &coin_blind); 130 GNUNET_PQ_cleanup_result (rs); 131 if (GNUNET_OK != ret) 132 break; 133 } 134 } 135 136 137 enum GNUNET_DB_QueryStatus 138 TEH_PG_select_recoup_above_serial_id ( 139 void *cls, 140 uint64_t serial_id, 141 TALER_EXCHANGEDB_RecoupCallback cb, 142 void *cb_cls) 143 { 144 struct PostgresClosure *pg = cls; 145 struct GNUNET_PQ_QueryParam params[] = { 146 GNUNET_PQ_query_param_uint64 (&serial_id), 147 GNUNET_PQ_query_param_end 148 }; 149 struct RecoupSerialContext psc = { 150 .cb = cb, 151 .cb_cls = cb_cls, 152 .pg = pg, 153 .status = GNUNET_OK 154 }; 155 enum GNUNET_DB_QueryStatus qs; 156 157 PREPARE (pg, 158 "recoup_get_incr", 159 "SELECT" 160 " recoup_uuid" 161 ",recoup_timestamp" 162 ",withdraw.reserve_pub" 163 ",coins.coin_pub" 164 ",coin_sig" 165 ",coin_blind" 166 ",denoms.denom_pub_hash" 167 ",coins.denom_sig" 168 ",coins.age_commitment_hash" 169 ",denoms.denom_pub" 170 ",amount" 171 " FROM recoup" 172 " JOIN known_coins coins" 173 " USING (coin_pub)" 174 " JOIN withdraw" 175 " USING (withdraw_id)" 176 " JOIN denominations denoms" 177 " ON (coins.denominations_serial = denoms.denominations_serial)" 178 " WHERE recoup_uuid>=$1" 179 " ORDER BY recoup_uuid ASC;"); 180 qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, 181 "recoup_get_incr", 182 params, 183 &recoup_serial_helper_cb, 184 &psc); 185 if (GNUNET_OK != psc.status) 186 return GNUNET_DB_STATUS_HARD_ERROR; 187 return qs; 188 }