merchant

Merchant backend to process payments, run by merchants
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pg_lookup_contract_terms.c (2856B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2022-2024 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_contract_terms.c
     18  * @brief Implementation of the lookup_contract_terms function for Postgres
     19  * @author Iván Ávalos
     20  * @author Christian Grothoff
     21  */
     22 #include "platform.h"
     23 #include <taler/taler_error_codes.h>
     24 #include <taler/taler_dbevents.h>
     25 #include <taler/taler_pq_lib.h>
     26 #include "pg_lookup_contract_terms.h"
     27 #include "pg_helper.h"
     28 
     29 
     30 enum GNUNET_DB_QueryStatus
     31 TMH_PG_lookup_contract_terms (
     32   void *cls,
     33   const char *instance_id,
     34   const char *order_id,
     35   json_t **contract_terms,
     36   uint64_t *order_serial,
     37   struct TALER_ClaimTokenP *claim_token)
     38 {
     39   struct PostgresClosure *pg = cls;
     40   enum GNUNET_DB_QueryStatus qs;
     41   struct TALER_ClaimTokenP ct;
     42   struct GNUNET_PQ_QueryParam params[] = {
     43     GNUNET_PQ_query_param_string (instance_id),
     44     GNUNET_PQ_query_param_string (order_id),
     45     GNUNET_PQ_query_param_end
     46   };
     47   struct GNUNET_PQ_ResultSpec rs[] = {
     48     /* contract_terms must be first! */
     49     TALER_PQ_result_spec_json ("contract_terms",
     50                                contract_terms),
     51     GNUNET_PQ_result_spec_uint64 ("order_serial",
     52                                   order_serial),
     53     GNUNET_PQ_result_spec_auto_from_type ("claim_token",
     54                                           &ct),
     55     GNUNET_PQ_result_spec_end
     56   };
     57 
     58   check_connection (pg);
     59   PREPARE (pg,
     60            "lookup_contract_terms",
     61            "SELECT"
     62            " contract_terms::TEXT"
     63            ",order_serial"
     64            ",claim_token"
     65            " FROM merchant_contract_terms"
     66            " WHERE order_id=$2"
     67            "   AND merchant_serial="
     68            "     (SELECT merchant_serial"
     69            "        FROM merchant_instances"
     70            "        WHERE merchant_id=$1)");
     71   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     72                                                  "lookup_contract_terms",
     73                                                  params,
     74                                                  (NULL != contract_terms)
     75                                                    ? rs
     76                                                    : &rs[1]);
     77   if (NULL != claim_token)
     78     *claim_token = ct;
     79   return qs;
     80 }