merchant

Merchant backend to process payments, run by merchants
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pg_select_otp.c (3125B)

      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_select_otp.c
     18  * @brief Implementation of the select_otp function for Postgres
     19  * @author Christian Grothoff
     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_select_otp.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TMH_PG_select_otp (void *cls,
     31                    const char *instance_id,
     32                    const char *otp_id,
     33                    struct TALER_MERCHANTDB_OtpDeviceDetails *td)
     34 {
     35   struct PostgresClosure *pg = cls;
     36   struct GNUNET_PQ_QueryParam params[] = {
     37     GNUNET_PQ_query_param_string (instance_id),
     38     GNUNET_PQ_query_param_string (otp_id),
     39     GNUNET_PQ_query_param_end
     40   };
     41 
     42   PREPARE (pg,
     43            "select_otp",
     44            "SELECT"
     45            " otp_description"
     46            ",otp_ctr"
     47            ",otp_key"
     48            ",otp_algorithm"
     49            " FROM merchant_otp_devices"
     50            " JOIN merchant_instances"
     51            "   USING (merchant_serial)"
     52            " WHERE merchant_instances.merchant_id=$1"
     53            "   AND merchant_otp_devices.otp_id=$2");
     54   if (NULL == td)
     55   {
     56     struct GNUNET_PQ_ResultSpec rs_null[] = {
     57       GNUNET_PQ_result_spec_end
     58     };
     59 
     60     check_connection (pg);
     61     return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     62                                                      "select_otp",
     63                                                      params,
     64                                                      rs_null);
     65   }
     66   else
     67   {
     68     uint32_t pos32;
     69     struct GNUNET_PQ_ResultSpec rs[] = {
     70       GNUNET_PQ_result_spec_string ("otp_description",
     71                                     &td->otp_description),
     72       GNUNET_PQ_result_spec_uint64 ("otp_ctr",
     73                                     &td->otp_ctr),
     74       GNUNET_PQ_result_spec_string ("otp_key",
     75                                     &td->otp_key),
     76       GNUNET_PQ_result_spec_uint32 ("otp_algorithm",
     77                                     &pos32),
     78       GNUNET_PQ_result_spec_end
     79     };
     80     enum GNUNET_DB_QueryStatus qs;
     81 
     82     check_connection (pg);
     83     qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     84                                                    "select_otp",
     85                                                    params,
     86                                                    rs);
     87     td->otp_algorithm = (enum TALER_MerchantConfirmationAlgorithm) pos32;
     88     return qs;
     89   }
     90 }
     91