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/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 "exchangedb_lib.h"
      22              : #include "taler/taler_pq_lib.h"
      23              : #include "exchange-database/get_wire_hash_for_contract.h"
      24              : #include "exchange-database/compute_shard.h"
      25              : #include "helper.h"
      26              : 
      27              : 
      28              : enum GNUNET_DB_QueryStatus
      29            6 : TALER_EXCHANGEDB_get_wire_hash_for_contract (
      30              :   struct TALER_EXCHANGEDB_PostgresContext *pg,
      31              :   const struct TALER_MerchantPublicKeyP *merchant_pub,
      32              :   const struct TALER_PrivateContractHashP *h_contract_terms,
      33              :   struct TALER_MerchantWireHashP *h_wire)
      34              : {
      35              :   enum GNUNET_DB_QueryStatus qs;
      36            6 :   uint64_t deposit_shard = TALER_EXCHANGEDB_compute_shard (merchant_pub);
      37            6 :   struct GNUNET_PQ_QueryParam params[] = {
      38            6 :     GNUNET_PQ_query_param_uint64 (&deposit_shard),
      39            6 :     GNUNET_PQ_query_param_auto_from_type (merchant_pub),
      40            6 :     GNUNET_PQ_query_param_auto_from_type (h_contract_terms),
      41              :     GNUNET_PQ_query_param_end
      42              :   };
      43              :   struct TALER_FullPayto payto_uri;
      44              :   struct TALER_WireSaltP wire_salt;
      45            6 :   struct GNUNET_PQ_ResultSpec rs[] = {
      46            6 :     GNUNET_PQ_result_spec_auto_from_type ("wire_salt",
      47              :                                           &wire_salt),
      48            6 :     GNUNET_PQ_result_spec_string ("payto_uri",
      49              :                                   &payto_uri.full_payto),
      50              :     GNUNET_PQ_result_spec_end
      51              :   };
      52              : 
      53              :   /* (shard, merchant_pub, h_contract_terms) is unique in batch_deposits */
      54            6 :   PREPARE (pg,
      55              :            "get_wire_hash_for_contract",
      56              :            "SELECT"
      57              :            "  bdep.wire_salt"
      58              :            " ,wt.payto_uri"
      59              :            " FROM batch_deposits bdep"
      60              :            " JOIN wire_targets wt"
      61              :            "   USING (wire_target_h_payto)"
      62              :            " WHERE bdep.shard=$1"
      63              :            "   AND bdep.merchant_pub=$2"
      64              :            "   AND bdep.h_contract_terms=$3");
      65            6 :   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
      66              :                                                  "get_wire_hash_for_contract",
      67              :                                                  params,
      68              :                                                  rs);
      69            6 :   if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs)
      70              :   {
      71            5 :     TALER_merchant_wire_signature_hash (payto_uri,
      72              :                                         &wire_salt,
      73              :                                         h_wire);
      74            5 :     GNUNET_PQ_cleanup_result (rs);
      75              :   }
      76            6 :   return qs;
      77              : }