merchant

Merchant backend to process payments, run by merchants
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lookup_order.c (3106B)

      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_pq_lib.h>
     23 #include "merchant-database/lookup_order.h"
     24 #include "helper.h"
     25 
     26 
     27 enum GNUNET_DB_QueryStatus
     28 TALER_MERCHANTDB_lookup_order (
     29   struct TALER_MERCHANTDB_PostgresContext *pg,
     30   const char *instance_id,
     31   const char *order_id,
     32   struct TALER_ClaimTokenP *claim_token,
     33   struct TALER_MerchantPostDataHashP *h_post_data,
     34   json_t **contract_terms)
     35 {
     36   json_t *j;
     37   struct TALER_ClaimTokenP ct;
     38   enum GNUNET_DB_QueryStatus qs;
     39   struct GNUNET_PQ_QueryParam params[] = {
     40     GNUNET_PQ_query_param_string (order_id),
     41     GNUNET_PQ_query_param_end
     42   };
     43   struct GNUNET_PQ_ResultSpec rs[] = {
     44     TALER_PQ_result_spec_json ("contract_terms",
     45                                &j),
     46     GNUNET_PQ_result_spec_auto_from_type ("claim_token",
     47                                           &ct),
     48     GNUNET_PQ_result_spec_auto_from_type ("h_post_data",
     49                                           h_post_data),
     50     GNUNET_PQ_result_spec_end
     51   };
     52 
     53   GNUNET_assert (NULL != pg->current_merchant_id);
     54   GNUNET_assert (0 == strcmp (instance_id,
     55                               pg->current_merchant_id));
     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   TMH_PQ_prepare_anon (pg,
     62                        "SELECT"
     63                        " contract_terms::TEXT"
     64                        ",claim_token"
     65                        ",h_post_data"
     66                        " FROM merchant_orders"
     67                        " WHERE order_id=$1");
     68   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     69                                                  "",
     70                                                  params,
     71                                                  rs);
     72   if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs)
     73   {
     74     if (NULL != contract_terms)
     75       *contract_terms = j;
     76     else
     77       json_decref (j);
     78     if (NULL != claim_token)
     79       *claim_token = ct;
     80   }
     81   else
     82   {
     83     /* just to be safe: NULL it */
     84     if (NULL != contract_terms)
     85       *contract_terms = NULL;
     86     if (NULL != claim_token)
     87       memset (claim_token,
     88               0,
     89               sizeof (struct TALER_ClaimTokenP));
     90   }
     91   return qs;
     92 }