merchant

Merchant backend to process payments, run by merchants
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pg_lookup_contract_terms2.c (3447B)

      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_contract_terms2.c
     18  * @brief Implementation of the lookup_contract_terms2 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_contract_terms2.h"
     26 #include "pg_helper.h"
     27 
     28 enum GNUNET_DB_QueryStatus
     29 TMH_PG_lookup_contract_terms2 (
     30   void *cls,
     31   const char *instance_id,
     32   const char *order_id,
     33   json_t **contract_terms,
     34   uint64_t *order_serial,
     35   bool *paid,
     36   struct TALER_ClaimTokenP *claim_token,
     37   char **pos_key,
     38   enum TALER_MerchantConfirmationAlgorithm *pos_algorithm)
     39 {
     40   struct PostgresClosure *pg = cls;
     41   enum GNUNET_DB_QueryStatus qs;
     42   struct TALER_ClaimTokenP ct;
     43   struct GNUNET_PQ_QueryParam params[] = {
     44     GNUNET_PQ_query_param_string (instance_id),
     45     GNUNET_PQ_query_param_string (order_id),
     46     GNUNET_PQ_query_param_end
     47   };
     48   uint32_t pos32;
     49   struct GNUNET_PQ_ResultSpec rs[] = {
     50     /* contract_terms must be first! */
     51     TALER_PQ_result_spec_json ("contract_terms",
     52                                contract_terms),
     53     GNUNET_PQ_result_spec_uint64 ("order_serial",
     54                                   order_serial),
     55     GNUNET_PQ_result_spec_bool ("paid",
     56                                 paid),
     57     GNUNET_PQ_result_spec_auto_from_type ("claim_token",
     58                                           &ct),
     59     GNUNET_PQ_result_spec_allow_null (
     60       GNUNET_PQ_result_spec_string ("pos_key",
     61                                     pos_key),
     62       NULL),
     63     GNUNET_PQ_result_spec_allow_null (
     64       GNUNET_PQ_result_spec_uint32 ("pos_algorithm",
     65                                     &pos32),
     66       NULL),
     67     GNUNET_PQ_result_spec_end
     68   };
     69 
     70   check_connection (pg);
     71   PREPARE (pg,
     72            "lookup_contract_terms2",
     73            "SELECT"
     74            " contract_terms::TEXT"
     75            ",order_serial"
     76            ",claim_token"
     77            ",paid"
     78            ",pos_key"
     79            ",pos_algorithm"
     80            " FROM merchant_contract_terms"
     81            " WHERE order_id=$2"
     82            "   AND merchant_serial="
     83            "     (SELECT merchant_serial"
     84            "        FROM merchant_instances"
     85            "        WHERE merchant_id=$1)");
     86   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     87                                                  "lookup_contract_terms2",
     88                                                  params,
     89                                                  (NULL != contract_terms)
     90                                                    ? rs
     91                                                    : &rs[1]);
     92   *pos_algorithm = (enum TALER_MerchantConfirmationAlgorithm) pos32;
     93   if (NULL != claim_token)
     94     *claim_token = ct;
     95   return qs;
     96 }