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 "platform.h"
      22             : #include "taler_error_codes.h"
      23             : #include "taler_dbevents.h"
      24             : #include "taler_exchangedb_plugin.h"
      25             : #include "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             : }