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/pg_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 "platform.h"
      23             : #include "taler_error_codes.h"
      24             : #include "taler_dbevents.h"
      25             : #include "taler_pq_lib.h"
      26             : #include "pg_get_old_coin_by_h_blind.h"
      27             : #include "pg_helper.h"
      28             : 
      29             : 
      30             : enum GNUNET_DB_QueryStatus
      31           0 : TEH_PG_get_old_coin_by_h_blind (
      32             :   void *cls,
      33             :   const struct TALER_BlindedCoinHashP *h_blind_ev,
      34             :   struct TALER_CoinSpendPublicKeyP *old_coin_pub,
      35             :   uint64_t *refresh_id)
      36             : {
      37           0 :   struct PostgresClosure *pg = cls;
      38           0 :   struct GNUNET_PQ_QueryParam params[] = {
      39           0 :     GNUNET_PQ_query_param_auto_from_type (h_blind_ev),
      40             :     GNUNET_PQ_query_param_end
      41             :   };
      42           0 :   struct GNUNET_PQ_ResultSpec rs[] = {
      43           0 :     GNUNET_PQ_result_spec_auto_from_type ("old_coin_pub",
      44             :                                           old_coin_pub),
      45           0 :     GNUNET_PQ_result_spec_uint64 ("refresh_id",
      46             :                                   refresh_id),
      47             :     GNUNET_PQ_result_spec_end
      48             :   };
      49             : 
      50             :   /* Used in #postgres_get_old_coin_by_h_blind() */
      51           0 :   PREPARE (pg,
      52             :            "old_coin_by_h_blind",
      53             :            "SELECT"
      54             :            " okc.coin_pub AS old_coin_pub"
      55             :            ",refresh_id"
      56             :            " FROM refresh "
      57             :            " JOIN known_coins okc ON (refresh.old_coin_pub = okc.coin_pub)"
      58             :            " WHERE $1=ANY(h_blind_evs)"
      59             :            " LIMIT 1;");
      60           0 :   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
      61             :                                                    "old_coin_by_h_blind",
      62             :                                                    params,
      63             :                                                    rs);
      64             : }