exchange

Base system with REST service to issue digital coins, run by the payment service provider
Log | Files | Refs | Submodules | README | LICENSE

select_contract.c (2314B)

      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 exchangedb/select_contract.c
     18  * @brief Implementation of the select_contract function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "taler/taler_pq_lib.h"
     22 #include "exchange-database/select_contract.h"
     23 #include "helper.h"
     24 
     25 enum GNUNET_DB_QueryStatus
     26 TALER_EXCHANGEDB_select_contract (
     27   struct TALER_EXCHANGEDB_PostgresContext *pg,
     28   const struct TALER_ContractDiffiePublicP *pub_ckey,
     29   struct TALER_PurseContractPublicKeyP *purse_pub,
     30   struct TALER_PurseContractSignatureP *econtract_sig,
     31   size_t *econtract_size,
     32   void **econtract)
     33 {
     34   struct GNUNET_PQ_QueryParam params[] = {
     35     GNUNET_PQ_query_param_auto_from_type (pub_ckey),
     36     GNUNET_PQ_query_param_end
     37   };
     38   struct GNUNET_PQ_ResultSpec rs[] = {
     39     GNUNET_PQ_result_spec_auto_from_type ("purse_pub",
     40                                           purse_pub),
     41     GNUNET_PQ_result_spec_auto_from_type ("contract_sig",
     42                                           econtract_sig),
     43     GNUNET_PQ_result_spec_variable_size ("e_contract",
     44                                          econtract,
     45                                          econtract_size),
     46     GNUNET_PQ_result_spec_end
     47   };
     48 
     49   PREPARE (pg,
     50            "select_contract",
     51            "SELECT "
     52            " purse_pub"
     53            ",e_contract"
     54            ",contract_sig"
     55            " FROM contracts"
     56            "   WHERE pub_ckey=$1;");
     57   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     58                                                    "select_contract",
     59                                                    params,
     60                                                    rs);
     61 
     62 }