merchant

Merchant backend to process payments, run by merchants
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lookup_order.c (3229B)

      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 src/backenddb/lookup_order.c
     18  * @brief Implementation of the lookup_order 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 "merchant-database/lookup_order.h"
     26 #include "helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TALER_MERCHANTDB_lookup_order (
     31   struct TALER_MERCHANTDB_PostgresContext *pg,
     32   const char *instance_id,
     33   const char *order_id,
     34   struct TALER_ClaimTokenP *claim_token,
     35   struct TALER_MerchantPostDataHashP *h_post_data,
     36   json_t **contract_terms)
     37 {
     38   json_t *j;
     39   struct TALER_ClaimTokenP ct;
     40   enum GNUNET_DB_QueryStatus qs;
     41   struct GNUNET_PQ_QueryParam params[] = {
     42     GNUNET_PQ_query_param_string (instance_id),
     43     GNUNET_PQ_query_param_string (order_id),
     44     GNUNET_PQ_query_param_end
     45   };
     46   struct GNUNET_PQ_ResultSpec rs[] = {
     47     TALER_PQ_result_spec_json ("contract_terms",
     48                                &j),
     49     GNUNET_PQ_result_spec_auto_from_type ("claim_token",
     50                                           &ct),
     51     GNUNET_PQ_result_spec_auto_from_type ("h_post_data",
     52                                           h_post_data),
     53     GNUNET_PQ_result_spec_end
     54   };
     55 
     56   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
     57               "Finding contract term, order_id: '%s', instance_id: '%s'.\n",
     58               order_id,
     59               instance_id);
     60   check_connection (pg);
     61   PREPARE (pg,
     62            "lookup_order",
     63            "SELECT"
     64            " contract_terms::TEXT"
     65            ",claim_token"
     66            ",h_post_data"
     67            " FROM merchant_orders"
     68            " WHERE merchant_orders.merchant_serial="
     69            "     (SELECT merchant_serial "
     70            "        FROM merchant_instances"
     71            "        WHERE merchant_id=$1)"
     72            "   AND merchant_orders.order_id=$2");
     73   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     74                                                  "lookup_order",
     75                                                  params,
     76                                                  rs);
     77   if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs)
     78   {
     79     if (NULL != contract_terms)
     80       *contract_terms = j;
     81     else
     82       json_decref (j);
     83     if (NULL != claim_token)
     84       *claim_token = ct;
     85   }
     86   else
     87   {
     88     /* just to be safe: NULL it */
     89     if (NULL != contract_terms)
     90       *contract_terms = NULL;
     91     if (NULL != claim_token)
     92       memset (claim_token,
     93               0,
     94               sizeof (struct TALER_ClaimTokenP));
     95   }
     96   return qs;
     97 }