Line data    Source code

       1              : /*
       2              :    This file is part of TALER
       3              :    Copyright (C) 2023, 2024 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/pg_get_wire_hash_for_contract.c
      18              :  * @brief Implementation of the get_wire_hash_for_contract function for Postgres
      19              :  * @author Özgür Kesim
      20              :  */
      21              : #include "taler/platform.h"
      22              : #include "taler/taler_error_codes.h"
      23              : #include "taler/taler_dbevents.h"
      24              : #include "taler/taler_exchangedb_plugin.h"
      25              : #include "taler/taler_pq_lib.h"
      26              : #include "pg_get_wire_hash_for_contract.h"
      27              : #include "pg_helper.h"
      28              : 
      29              : 
      30              : enum GNUNET_DB_QueryStatus
      31            4 : TEH_PG_get_wire_hash_for_contract (
      32              :   void *cls,
      33              :   const struct TALER_MerchantPublicKeyP *merchant_pub,
      34              :   const struct TALER_PrivateContractHashP *h_contract_terms,
      35              :   struct TALER_MerchantWireHashP *h_wire)
      36              : {
      37            4 :   struct PostgresClosure *pg = cls;
      38              :   enum GNUNET_DB_QueryStatus qs;
      39            4 :   struct GNUNET_PQ_QueryParam params[] = {
      40            4 :     GNUNET_PQ_query_param_auto_from_type (merchant_pub),
      41            4 :     GNUNET_PQ_query_param_auto_from_type (h_contract_terms),
      42              :     GNUNET_PQ_query_param_end
      43              :   };
      44              :   struct TALER_FullPayto payto_uri;
      45              :   struct TALER_WireSaltP wire_salt;
      46            4 :   struct GNUNET_PQ_ResultSpec rs[] = {
      47            4 :     GNUNET_PQ_result_spec_auto_from_type ("wire_salt",
      48              :                                           &wire_salt),
      49            4 :     GNUNET_PQ_result_spec_string ("payto_uri",
      50              :                                   &payto_uri.full_payto),
      51              :     GNUNET_PQ_result_spec_end
      52              :   };
      53              : 
      54              :   /* check if the necessary records exist and get them */
      55            4 :   PREPARE (pg,
      56              :            "get_wire_hash_for_contract",
      57              :            "SELECT"
      58              :            "  bdep.wire_salt"
      59              :            " ,wt.payto_uri"
      60              :            " FROM coin_deposits"
      61              :            " JOIN batch_deposits bdep"
      62              :            "   USING (batch_deposit_serial_id)"
      63              :            " JOIN wire_targets wt"
      64              :            "   USING (wire_target_h_payto)"
      65              :            " WHERE bdep.merchant_pub=$1"
      66              :            "   AND bdep.h_contract_terms=$2");
      67              :   /* NOTE: above query might be more efficient if we computed the shard
      68              :      from the merchant_pub and included that in the query */
      69            4 :   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
      70              :                                                  "get_wire_hash_for_contract",
      71              :                                                  params,
      72              :                                                  rs);
      73            4 :   if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs)
      74              :   {
      75            4 :     TALER_merchant_wire_signature_hash (payto_uri,
      76              :                                         &wire_salt,
      77              :                                         h_wire);
      78            4 :     GNUNET_PQ_cleanup_result (rs);
      79              :   }
      80            4 :   return qs;
      81              : }