Line data    Source code

       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/get_old_coin_by_h_blind.c
      18              :  * @brief Implementation of the get_old_coin_by_h_blind function for Postgres
      19              :  * @author Christian Grothoff
      20              :  * @author Özgür Kesim
      21              :  */
      22              : #include "taler/taler_pq_lib.h"
      23              : #include "exchange-database/get_old_coin_by_h_blind.h"
      24              : #include "helper.h"
      25              : 
      26              : 
      27              : enum GNUNET_DB_QueryStatus
      28            0 : TALER_EXCHANGEDB_get_old_coin_by_h_blind (
      29              :   struct TALER_EXCHANGEDB_PostgresContext *pg,
      30              :   const struct TALER_BlindedCoinHashP *h_blind_ev,
      31              :   struct TALER_CoinSpendPublicKeyP *old_coin_pub,
      32              :   uint64_t *refresh_id)
      33              : {
      34            0 :   struct GNUNET_PQ_QueryParam params[] = {
      35            0 :     GNUNET_PQ_query_param_auto_from_type (h_blind_ev),
      36              :     GNUNET_PQ_query_param_end
      37              :   };
      38            0 :   struct GNUNET_PQ_ResultSpec rs[] = {
      39            0 :     GNUNET_PQ_result_spec_auto_from_type ("old_coin_pub",
      40              :                                           old_coin_pub),
      41            0 :     GNUNET_PQ_result_spec_uint64 ("refresh_id",
      42              :                                   refresh_id),
      43              :     GNUNET_PQ_result_spec_end
      44              :   };
      45              : 
      46              :   /* Used in #postgres_get_old_coin_by_h_blind() */
      47            0 :   PREPARE (pg,
      48              :            "old_coin_by_h_blind",
      49              :            "SELECT"
      50              :            " okc.coin_pub AS old_coin_pub"
      51              :            ",refresh_id"
      52              :            " FROM refresh "
      53              :            " JOIN known_coins okc ON (refresh.old_coin_pub = okc.coin_pub)"
      54              :            " WHERE $1=ANY(h_blind_evs)"
      55              :            " LIMIT 1;");
      56            0 :   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
      57              :                                                    "old_coin_by_h_blind",
      58              :                                                    params,
      59              :                                                    rs);
      60              : }