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Base system with REST service to issue digital coins, run by the payment service provider
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pg_reserves_get_origin.c (2123B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2022, 2024, 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_reserves_get_origin.c
     18  * @brief Implementation of the reserves_get_origin function for Postgres
     19  * @author Christian Grothoff
     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_reserves_get_origin.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TEH_PG_reserves_get_origin (
     31   void *cls,
     32   const struct TALER_ReservePublicKeyP *reserve_pub,
     33   struct TALER_FullPaytoHashP *h_payto,
     34   struct TALER_FullPayto *payto_uri)
     35 {
     36   struct PostgresClosure *pg = cls;
     37   struct GNUNET_PQ_QueryParam params[] = {
     38     GNUNET_PQ_query_param_auto_from_type (reserve_pub),
     39     GNUNET_PQ_query_param_end
     40   };
     41   struct GNUNET_PQ_ResultSpec rs[] = {
     42     GNUNET_PQ_result_spec_auto_from_type (
     43       "wire_source_h_payto",
     44       h_payto),
     45     GNUNET_PQ_result_spec_string (
     46       "payto_uri",
     47       &payto_uri->full_payto),
     48     GNUNET_PQ_result_spec_end
     49   };
     50 
     51   PREPARE (pg,
     52            "get_h_wire_source_of_reserve",
     53            "SELECT"
     54            " rt.wire_source_h_payto"
     55            ",wt.payto_uri"
     56            " FROM reserves_in rt"
     57            " JOIN wire_targets wt"
     58            "   ON (rt.wire_source_h_payto = wt.wire_target_h_payto)"
     59            " WHERE rt.reserve_pub=$1");
     60   return GNUNET_PQ_eval_prepared_singleton_select (
     61     pg->conn,
     62     "get_h_wire_source_of_reserve",
     63     params,
     64     rs);
     65 }