merchant

Merchant backend to process payments, run by merchants
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pg_lookup_order_status.c (2553B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2022 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_lookup_order_status.c
     18  * @brief Implementation of the lookup_order_status function for Postgres
     19  * @author Iván Ávalos
     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_lookup_order_status.h"
     26 #include "pg_helper.h"
     27 
     28 enum GNUNET_DB_QueryStatus
     29 TMH_PG_lookup_order_status (
     30   void *cls,
     31   const char *instance_id,
     32   const char *order_id,
     33   struct TALER_PrivateContractHashP *h_contract_terms,
     34   bool *paid)
     35 {
     36   struct PostgresClosure *pg = cls;
     37   uint8_t paid8;
     38   enum GNUNET_DB_QueryStatus qs;
     39   struct GNUNET_PQ_QueryParam params[] = {
     40     GNUNET_PQ_query_param_string (instance_id),
     41     GNUNET_PQ_query_param_string (order_id),
     42     GNUNET_PQ_query_param_end
     43   };
     44   struct GNUNET_PQ_ResultSpec rs[] = {
     45     GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms",
     46                                           h_contract_terms),
     47     GNUNET_PQ_result_spec_auto_from_type ("paid",
     48                                           &paid8),
     49     GNUNET_PQ_result_spec_end
     50   };
     51 
     52   check_connection (pg);
     53   PREPARE (pg,
     54            "lookup_order_status",
     55            "SELECT"
     56            " h_contract_terms"
     57            ",paid"
     58            " FROM merchant_contract_terms"
     59            " WHERE merchant_serial="
     60            "     (SELECT merchant_serial "
     61            "        FROM merchant_instances"
     62            "        WHERE merchant_id=$1)"
     63            "   AND order_id=$2");
     64   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     65                                                  "lookup_order_status",
     66                                                  params,
     67                                                  rs);
     68   if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs)
     69     *paid = (0 != paid8);
     70   else
     71     *paid = false; /* just to be safe(r) */
     72   return qs;
     73 }