pg_select_account_merges_above_serial_id.c (6214B)
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 pg_select_account_merges_above_serial_id.c 18 * @brief Implementation of the select_account_merges_above_serial_id function for Postgres 19 * @author Christian Grothoff 20 */ 21 #include "taler/taler_pq_lib.h" 22 #include "taler/exchange-database/select_account_merges_above_serial_id.h" 23 #include "helper.h" 24 25 26 /** 27 * Closure for #account_merge_serial_helper_cb(). 28 */ 29 struct AccountMergeSerialContext 30 { 31 32 /** 33 * Callback to call. 34 */ 35 TALER_EXCHANGEDB_AccountMergeCallback 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 AccountMergeSerialContext` 59 * @param result the postgres result 60 * @param num_results the number of results in @a result 61 */ 62 static void 63 account_merge_serial_helper_cb (void *cls, 64 PGresult *result, 65 unsigned int num_results) 66 { 67 struct AccountMergeSerialContext *dsc = cls; 68 struct TALER_EXCHANGEDB_PostgresContext *pg = dsc->pg; 69 70 for (unsigned int i = 0; i<num_results; i++) 71 { 72 struct TALER_ReservePublicKeyP reserve_pub; 73 struct TALER_PurseContractPublicKeyP purse_pub; 74 struct TALER_PrivateContractHashP h_contract_terms; 75 struct GNUNET_TIME_Timestamp purse_expiration; 76 struct TALER_Amount amount; 77 uint32_t min_age; 78 uint32_t flags32; 79 enum TALER_WalletAccountMergeFlags flags; 80 struct TALER_Amount purse_fee; 81 struct GNUNET_TIME_Timestamp merge_timestamp; 82 struct TALER_ReserveSignatureP reserve_sig; 83 uint64_t rowid; 84 struct GNUNET_PQ_ResultSpec rs[] = { 85 TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee", 86 &amount), 87 TALER_PQ_RESULT_SPEC_AMOUNT ("purse_fee", 88 &purse_fee), 89 GNUNET_PQ_result_spec_uint32 ("flags", 90 &flags32), 91 GNUNET_PQ_result_spec_uint32 ("age_limit", 92 &min_age), 93 GNUNET_PQ_result_spec_timestamp ("purse_expiration", 94 &purse_expiration), 95 GNUNET_PQ_result_spec_timestamp ("merge_timestamp", 96 &merge_timestamp), 97 GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms", 98 &h_contract_terms), 99 GNUNET_PQ_result_spec_auto_from_type ("purse_pub", 100 &purse_pub), 101 GNUNET_PQ_result_spec_auto_from_type ("reserve_sig", 102 &reserve_sig), 103 GNUNET_PQ_result_spec_auto_from_type ("reserve_pub", 104 &reserve_pub), 105 GNUNET_PQ_result_spec_uint64 ("account_merge_request_serial_id", 106 &rowid), 107 GNUNET_PQ_result_spec_end 108 }; 109 enum GNUNET_GenericReturnValue ret; 110 111 if (GNUNET_OK != 112 GNUNET_PQ_extract_result (result, 113 rs, 114 i)) 115 { 116 GNUNET_break (0); 117 dsc->status = GNUNET_SYSERR; 118 return; 119 } 120 flags = (enum TALER_WalletAccountMergeFlags) flags32; 121 ret = dsc->cb (dsc->cb_cls, 122 rowid, 123 &reserve_pub, 124 &purse_pub, 125 &h_contract_terms, 126 purse_expiration, 127 &amount, 128 min_age, 129 flags, 130 &purse_fee, 131 merge_timestamp, 132 &reserve_sig); 133 GNUNET_PQ_cleanup_result (rs); 134 if (GNUNET_OK != ret) 135 break; 136 } 137 } 138 139 140 enum GNUNET_DB_QueryStatus 141 TALER_EXCHANGEDB_select_account_merges_above_serial_id ( 142 struct TALER_EXCHANGEDB_PostgresContext *pg, 143 uint64_t serial_id, 144 TALER_EXCHANGEDB_AccountMergeCallback cb, 145 void *cb_cls) 146 { 147 struct GNUNET_PQ_QueryParam params[] = { 148 GNUNET_PQ_query_param_uint64 (&serial_id), 149 GNUNET_PQ_query_param_end 150 }; 151 struct AccountMergeSerialContext dsc = { 152 .cb = cb, 153 .cb_cls = cb_cls, 154 .pg = pg, 155 .status = GNUNET_OK 156 }; 157 enum GNUNET_DB_QueryStatus qs; 158 159 PREPARE (pg, 160 "audit_get_account_merge_incr", 161 "SELECT" 162 " am.account_merge_request_serial_id" 163 ",am.reserve_pub" 164 ",am.purse_pub" 165 ",pr.h_contract_terms" 166 ",pr.purse_expiration" 167 ",pr.amount_with_fee" 168 ",pr.age_limit" 169 ",pr.flags" 170 ",pr.purse_fee" 171 ",pm.merge_timestamp" 172 ",am.reserve_sig" 173 " FROM account_merges am" 174 " JOIN purse_requests pr USING (purse_pub)" 175 " JOIN purse_merges pm USING (purse_pub)" 176 " WHERE (" 177 " (account_merge_request_serial_id>=$1)" 178 " )" 179 " ORDER BY account_merge_request_serial_id ASC;"); 180 qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, 181 "audit_get_account_merge_incr", 182 params, 183 &account_merge_serial_helper_cb, 184 &dsc); 185 if (GNUNET_OK != dsc.status) 186 return GNUNET_DB_STATUS_HARD_ERROR; 187 return qs; 188 }