exchange

Base system with REST service to issue digital coins, run by the payment service provider
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pg_get_denomination_info.c (3779B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2022,2025 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_info.c
     18  * @brief Implementation of the get_denomination_info function for Postgres
     19  * @author Christian Grothoff
     20  * @author Özgür Kesim
     21  */
     22 #include "taler/platform.h"
     23 #include "taler/taler_error_codes.h"
     24 #include "taler/taler_dbevents.h"
     25 #include "taler/taler_pq_lib.h"
     26 #include "pg_get_denomination_info.h"
     27 #include "pg_helper.h"
     28 
     29 
     30 enum GNUNET_DB_QueryStatus
     31 TEH_PG_get_denomination_info (
     32   void *cls,
     33   const struct TALER_DenominationHashP *denom_pub_hash,
     34   uint64_t *denom_serial,
     35   struct TALER_EXCHANGEDB_DenominationKeyInformation *issue)
     36 {
     37   struct PostgresClosure *pg = cls;
     38   enum GNUNET_DB_QueryStatus qs;
     39   uint64_t serial;
     40   struct GNUNET_PQ_QueryParam params[] = {
     41     GNUNET_PQ_query_param_auto_from_type (denom_pub_hash),
     42     GNUNET_PQ_query_param_end
     43   };
     44   struct GNUNET_PQ_ResultSpec rs[] = {
     45     GNUNET_PQ_result_spec_uint64 ("denominations_serial",
     46                                   &serial),
     47     GNUNET_PQ_result_spec_auto_from_type ("master_sig",
     48                                           &issue->signature),
     49     GNUNET_PQ_result_spec_timestamp ("valid_from",
     50                                      &issue->start),
     51     GNUNET_PQ_result_spec_timestamp ("expire_withdraw",
     52                                      &issue->expire_withdraw),
     53     GNUNET_PQ_result_spec_timestamp ("expire_deposit",
     54                                      &issue->expire_deposit),
     55     GNUNET_PQ_result_spec_timestamp ("expire_legal",
     56                                      &issue->expire_legal),
     57     TALER_PQ_RESULT_SPEC_AMOUNT ("coin",
     58                                  &issue->value),
     59     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_withdraw",
     60                                  &issue->fees.withdraw),
     61     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_deposit",
     62                                  &issue->fees.deposit),
     63     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refresh",
     64                                  &issue->fees.refresh),
     65     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refund",
     66                                  &issue->fees.refund),
     67     GNUNET_PQ_result_spec_uint32 ("age_mask",
     68                                   &issue->age_mask.bits),
     69     GNUNET_PQ_result_spec_end
     70   };
     71 
     72   PREPARE (pg,
     73            "denomination_get",
     74            "SELECT"
     75            " denominations_serial"
     76            ",master_sig"
     77            ",valid_from"
     78            ",expire_withdraw"
     79            ",expire_deposit"
     80            ",expire_legal"
     81            ",coin"  /* value of this denom */
     82            ",fee_withdraw"
     83            ",fee_deposit"
     84            ",fee_refresh"
     85            ",fee_refund"
     86            ",age_mask"
     87            " FROM denominations"
     88            " WHERE denom_pub_hash=$1;");
     89   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     90                                                  "denomination_get",
     91                                                  params,
     92                                                  rs);
     93   if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != qs)
     94     return qs;
     95   issue->denom_hash = *denom_pub_hash;
     96   if (NULL != denom_serial)
     97     *denom_serial = serial;
     98   return qs;
     99 }