get_exchange_signkeys.c (4806B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2024 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 18 #include "taler/taler_pq_lib.h" 19 #include "pg_helper.h" 20 21 #include "auditor-database/get_exchange_signkeys.h" 22 23 24 struct ExchangeSignkeysContext 25 { 26 27 /** 28 * Function to call for each bad sig loss. 29 */ 30 TALER_AUDITORDB_ExchangeSignkeysCallback cb; 31 32 /** 33 * Closure for @e cb 34 */ 35 void *cb_cls; 36 37 /** 38 * Plugin context. 39 */ 40 struct TALER_AUDITORDB_PostgresContext *pg; 41 42 /** 43 * Query status to return. 44 */ 45 enum GNUNET_DB_QueryStatus qs; 46 }; 47 48 49 /** 50 * Helper function for #TALER_AUDITORDB_get_exchange_signkeys(). 51 * To be called with the results of a SELECT statement 52 * that has returned @a num_results results. 53 * 54 * @param cls closure of type `struct ExchangeSignkeysContext *` 55 * @param result the postgres result 56 * @param num_results the number of results in @a result 57 */ 58 static void 59 exchange_signkeys_cb (void *cls, 60 PGresult *result, 61 unsigned int num_results) 62 { 63 struct ExchangeSignkeysContext *dcc = cls; 64 // struct TALER_AUDITORDB_PostgresContext *pg = dcc->pg; 65 66 for (unsigned int i = 0; i < num_results; i++) 67 { 68 uint64_t serial_id; 69 struct TALER_AUDITORDB_ExchangeSignkeys dc; 70 struct GNUNET_PQ_ResultSpec rs[] = { 71 GNUNET_PQ_result_spec_uint64 ("row_id", 72 &serial_id), 73 GNUNET_PQ_result_spec_auto_from_type ("exchange_pub", 74 &dc.exchange_pub), 75 GNUNET_PQ_result_spec_auto_from_type ("master_sig", 76 &dc.master_sig), 77 GNUNET_PQ_result_spec_absolute_time ("ep_valid_from", 78 &dc.ep_valid_from), 79 GNUNET_PQ_result_spec_absolute_time ("ep_expire_sign", 80 &dc.ep_expire_sign), 81 GNUNET_PQ_result_spec_absolute_time ("ep_expire_legal", 82 &dc.ep_expire_legal), 83 GNUNET_PQ_result_spec_end 84 }; 85 enum GNUNET_GenericReturnValue rval; 86 87 if (GNUNET_OK != 88 GNUNET_PQ_extract_result (result, 89 rs, 90 i)) 91 { 92 GNUNET_break (0); 93 dcc->qs = GNUNET_DB_STATUS_HARD_ERROR; 94 return; 95 } 96 97 dcc->qs = i + 1; 98 99 rval = dcc->cb (dcc->cb_cls, 100 serial_id, 101 &dc); 102 GNUNET_PQ_cleanup_result (rs); 103 if (GNUNET_OK != rval) 104 break; 105 } 106 } 107 108 109 enum GNUNET_DB_QueryStatus 110 TALER_AUDITORDB_get_exchange_signkeys ( 111 struct TALER_AUDITORDB_PostgresContext *pg, 112 int64_t limit, 113 uint64_t offset, 114 TALER_AUDITORDB_ExchangeSignkeysCallback cb, 115 void *cb_cls) 116 { 117 uint64_t plimit = (uint64_t) ((limit < 0) ? -limit : limit); 118 struct GNUNET_PQ_QueryParam params[] = { 119 GNUNET_PQ_query_param_uint64 (&offset), 120 GNUNET_PQ_query_param_uint64 (&plimit), 121 GNUNET_PQ_query_param_end 122 }; 123 struct ExchangeSignkeysContext dcc = { 124 .cb = cb, 125 .cb_cls = cb_cls, 126 .pg = pg 127 }; 128 enum GNUNET_DB_QueryStatus qs; 129 130 PREPARE (pg, 131 "auditor_exchange_signkeys_get_desc", 132 "SELECT" 133 " row_id," 134 " exchange_pub," 135 " master_sig," 136 " ep_valid_from," 137 " ep_expire_sign," 138 " ep_expire_legal" 139 " FROM auditor_exchange_signkeys" 140 " WHERE (row_id < $1)" 141 " ORDER BY row_id DESC" 142 " LIMIT $2" 143 ); 144 PREPARE (pg, 145 "auditor_exchange_signkeys_get_asc", 146 "SELECT" 147 " row_id," 148 " exchange_pub," 149 " master_sig," 150 " ep_valid_from," 151 " ep_expire_sign," 152 " ep_expire_legal" 153 " FROM auditor_exchange_signkeys" 154 " WHERE (row_id > $1)" 155 " ORDER BY row_id ASC" 156 " LIMIT $2" 157 ); 158 qs = GNUNET_PQ_eval_prepared_multi_select ( 159 pg->conn, 160 (limit > 0) 161 ? "auditor_exchange_signkeys_get_asc" 162 : "auditor_exchange_signkeys_get_desc", 163 params, 164 &exchange_signkeys_cb, 165 &dcc); 166 if (qs > 0) 167 return dcc.qs; 168 GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR != qs); 169 return qs; 170 }