merchant

Merchant backend to process payments, run by merchants
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pg_check_donau_instance.c (2205B)

      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 backenddb/pg_check_donau_instance.c
     18  * @brief Implementation of the check_donau_instance function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "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_check_donau_instance.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TMH_PG_check_donau_instance (
     31   void *cls,
     32   const struct TALER_MerchantPublicKeyP *merchant_pub,
     33   const char *donau_url,
     34   uint64_t charity_id
     35   )
     36 {
     37   struct PostgresClosure *pg = cls;
     38   struct GNUNET_PQ_QueryParam params[] = {
     39     GNUNET_PQ_query_param_string (donau_url),
     40     GNUNET_PQ_query_param_uint64 (&charity_id),
     41     GNUNET_PQ_query_param_auto_from_type (merchant_pub),
     42     GNUNET_PQ_query_param_end
     43   };
     44   struct GNUNET_PQ_ResultSpec rs[] = {
     45     GNUNET_PQ_result_spec_end
     46   };
     47 
     48   check_connection (pg);
     49   PREPARE (pg,
     50            "check_donau_instance",
     51            "SELECT 1"
     52            " FROM merchant_donau_instances"
     53            " WHERE donau_url=$1"
     54            "   AND charity_id=$2 "
     55            "   AND merchant_instance_serial ="
     56            "   (SELECT merchant_serial"
     57            "      FROM merchant_instances mi"
     58            "     WHERE mi.merchant_pub = $3)");
     59   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     60                                                    "check_donau_instance",
     61                                                    params,
     62                                                    rs);
     63 
     64 }