exchange

Base system with REST service to issue digital coins, run by the payment service provider
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pg_get_denomination_by_serial.c (3387B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2025 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_get_denomination_by_serial.c
     18  * @brief Implementation of the get_denomination_by_serial function for Postgres
     19  * @author Özgür Kesim
     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_get_denomination_by_serial.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TEH_PG_get_denomination_by_serial (
     31   void *cls,
     32   uint64_t denom_serial,
     33   struct TALER_EXCHANGEDB_DenominationKeyInformation *issue)
     34 {
     35   struct PostgresClosure *pg = cls;
     36   struct GNUNET_PQ_QueryParam params[] = {
     37     GNUNET_PQ_query_param_uint64 (&denom_serial),
     38     GNUNET_PQ_query_param_end
     39   };
     40   struct GNUNET_PQ_ResultSpec rs[] = {
     41     GNUNET_PQ_result_spec_auto_from_type ("master_sig",
     42                                           &issue->signature),
     43     GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash",
     44                                           &issue->denom_hash),
     45     GNUNET_PQ_result_spec_timestamp ("valid_from",
     46                                      &issue->start),
     47     GNUNET_PQ_result_spec_timestamp ("expire_withdraw",
     48                                      &issue->expire_withdraw),
     49     GNUNET_PQ_result_spec_timestamp ("expire_deposit",
     50                                      &issue->expire_deposit),
     51     GNUNET_PQ_result_spec_timestamp ("expire_legal",
     52                                      &issue->expire_legal),
     53     TALER_PQ_RESULT_SPEC_AMOUNT ("coin",
     54                                  &issue->value),
     55     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_withdraw",
     56                                  &issue->fees.withdraw),
     57     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit",
     58                                  &issue->fees.deposit),
     59     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refresh",
     60                                  &issue->fees.refresh),
     61     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refund",
     62                                  &issue->fees.refund),
     63     GNUNET_PQ_result_spec_uint32 ("age_mask",
     64                                   &issue->age_mask.bits),
     65     GNUNET_PQ_result_spec_end
     66   };
     67 
     68   PREPARE (pg,
     69            "denomination_get_by_serial",
     70            "SELECT"
     71            " master_sig"
     72            ",denom_pub_hash"
     73            ",valid_from"
     74            ",expire_withdraw"
     75            ",expire_deposit"
     76            ",expire_legal"
     77            ",coin"  /* value of this denom */
     78            ",fee_withdraw"
     79            ",fee_deposit"
     80            ",fee_refresh"
     81            ",fee_refund"
     82            ",age_mask"
     83            " FROM denominations"
     84            " WHERE denominations_serial=$1;");
     85   return GNUNET_PQ_eval_prepared_singleton_select (
     86     pg->conn,
     87     "denomination_get_by_serial",
     88     params,
     89     rs);
     90 }