pg_select_account_merges_above_serial_id.c (6253B)
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/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_account_merges_above_serial_id.h" 26 #include "pg_helper.h" 27 28 29 /** 30 * Closure for #account_merge_serial_helper_cb(). 31 */ 32 struct AccountMergeSerialContext 33 { 34 35 /** 36 * Callback to call. 37 */ 38 TALER_EXCHANGEDB_AccountMergeCallback 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 AccountMergeSerialContext` 62 * @param result the postgres result 63 * @param num_results the number of results in @a result 64 */ 65 static void 66 account_merge_serial_helper_cb (void *cls, 67 PGresult *result, 68 unsigned int num_results) 69 { 70 struct AccountMergeSerialContext *dsc = cls; 71 struct PostgresClosure *pg = dsc->pg; 72 73 for (unsigned int i = 0; i<num_results; i++) 74 { 75 struct TALER_ReservePublicKeyP reserve_pub; 76 struct TALER_PurseContractPublicKeyP purse_pub; 77 struct TALER_PrivateContractHashP h_contract_terms; 78 struct GNUNET_TIME_Timestamp purse_expiration; 79 struct TALER_Amount amount; 80 uint32_t min_age; 81 uint32_t flags32; 82 enum TALER_WalletAccountMergeFlags flags; 83 struct TALER_Amount purse_fee; 84 struct GNUNET_TIME_Timestamp merge_timestamp; 85 struct TALER_ReserveSignatureP reserve_sig; 86 uint64_t rowid; 87 struct GNUNET_PQ_ResultSpec rs[] = { 88 TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee", 89 &amount), 90 TALER_PQ_RESULT_SPEC_AMOUNT ("purse_fee", 91 &purse_fee), 92 GNUNET_PQ_result_spec_uint32 ("flags", 93 &flags32), 94 GNUNET_PQ_result_spec_uint32 ("age_limit", 95 &min_age), 96 GNUNET_PQ_result_spec_timestamp ("purse_expiration", 97 &purse_expiration), 98 GNUNET_PQ_result_spec_timestamp ("merge_timestamp", 99 &merge_timestamp), 100 GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms", 101 &h_contract_terms), 102 GNUNET_PQ_result_spec_auto_from_type ("purse_pub", 103 &purse_pub), 104 GNUNET_PQ_result_spec_auto_from_type ("reserve_sig", 105 &reserve_sig), 106 GNUNET_PQ_result_spec_auto_from_type ("reserve_pub", 107 &reserve_pub), 108 GNUNET_PQ_result_spec_uint64 ("account_merge_request_serial_id", 109 &rowid), 110 GNUNET_PQ_result_spec_end 111 }; 112 enum GNUNET_GenericReturnValue ret; 113 114 if (GNUNET_OK != 115 GNUNET_PQ_extract_result (result, 116 rs, 117 i)) 118 { 119 GNUNET_break (0); 120 dsc->status = GNUNET_SYSERR; 121 return; 122 } 123 flags = (enum TALER_WalletAccountMergeFlags) flags32; 124 ret = dsc->cb (dsc->cb_cls, 125 rowid, 126 &reserve_pub, 127 &purse_pub, 128 &h_contract_terms, 129 purse_expiration, 130 &amount, 131 min_age, 132 flags, 133 &purse_fee, 134 merge_timestamp, 135 &reserve_sig); 136 GNUNET_PQ_cleanup_result (rs); 137 if (GNUNET_OK != ret) 138 break; 139 } 140 } 141 142 143 enum GNUNET_DB_QueryStatus 144 TEH_PG_select_account_merges_above_serial_id ( 145 void *cls, 146 uint64_t serial_id, 147 TALER_EXCHANGEDB_AccountMergeCallback cb, 148 void *cb_cls) 149 { 150 struct PostgresClosure *pg = cls; 151 struct GNUNET_PQ_QueryParam params[] = { 152 GNUNET_PQ_query_param_uint64 (&serial_id), 153 GNUNET_PQ_query_param_end 154 }; 155 struct AccountMergeSerialContext dsc = { 156 .cb = cb, 157 .cb_cls = cb_cls, 158 .pg = pg, 159 .status = GNUNET_OK 160 }; 161 enum GNUNET_DB_QueryStatus qs; 162 163 PREPARE (pg, 164 "audit_get_account_merge_incr", 165 "SELECT" 166 " am.account_merge_request_serial_id" 167 ",am.reserve_pub" 168 ",am.purse_pub" 169 ",pr.h_contract_terms" 170 ",pr.purse_expiration" 171 ",pr.amount_with_fee" 172 ",pr.age_limit" 173 ",pr.flags" 174 ",pr.purse_fee" 175 ",pm.merge_timestamp" 176 ",am.reserve_sig" 177 " FROM account_merges am" 178 " JOIN purse_requests pr USING (purse_pub)" 179 " JOIN purse_merges pm USING (purse_pub)" 180 " WHERE (" 181 " (account_merge_request_serial_id>=$1)" 182 " )" 183 " ORDER BY account_merge_request_serial_id ASC;"); 184 qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn, 185 "audit_get_account_merge_incr", 186 params, 187 &account_merge_serial_helper_cb, 188 &dsc); 189 if (GNUNET_OK != dsc.status) 190 return GNUNET_DB_STATUS_HARD_ERROR; 191 return qs; 192 }