Line data    Source code

       1             : /*
       2             :    This file is part of TALER
       3             :    Copyright (C) 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 backenddb/pg_insert_spent_token.c
      18             :  * @brief Implementation of the insert_spent_token function for Postgres
      19             :  * @author Christian Blättler
      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_insert_spent_token.h"
      26             : #include "pg_helper.h"
      27             : 
      28             : 
      29             : enum GNUNET_DB_QueryStatus
      30           4 : TMH_PG_insert_spent_token (
      31             :   void *cls,
      32             :   const struct TALER_PrivateContractHashP *h_contract_terms,
      33             :   const struct TALER_TokenIssuePublicKeyHashP *h_issue_pub,
      34             :   const struct TALER_TokenUsePublicKeyP *use_pub,
      35             :   const struct TALER_TokenUseSignatureP *use_sig,
      36             :   const struct TALER_TokenIssueSignature *issue_sig)
      37             : {
      38           4 :   struct PostgresClosure *pg = cls;
      39           4 :   struct GNUNET_PQ_QueryParam params[] = {
      40           4 :     GNUNET_PQ_query_param_auto_from_type (h_contract_terms),
      41           4 :     GNUNET_PQ_query_param_auto_from_type (h_issue_pub),
      42           4 :     GNUNET_PQ_query_param_auto_from_type (use_pub),
      43           4 :     GNUNET_PQ_query_param_auto_from_type (use_sig),
      44           4 :     GNUNET_PQ_query_param_unblinded_sig (issue_sig->signature),
      45             :     GNUNET_PQ_query_param_end
      46             :   };
      47             :   bool no_fam;
      48             :   bool conflict; /* used to signal double-spending */
      49           4 :   struct GNUNET_PQ_ResultSpec rs[] = {
      50           4 :     GNUNET_PQ_result_spec_bool ("out_no_family",
      51             :                                 &no_fam),
      52           4 :     GNUNET_PQ_result_spec_bool ("out_conflict",
      53             :                                 &conflict),
      54             :     GNUNET_PQ_result_spec_end
      55             :   };
      56             :   enum GNUNET_DB_QueryStatus qs;
      57             : 
      58           4 :   check_connection (pg);
      59           4 :   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
      60             :               "Storing token spent with key %s\n",
      61             :               GNUNET_h2s (&h_issue_pub->hash));
      62           4 :   PREPARE (pg,
      63             :            "spent_token_insert",
      64             :            "SELECT"
      65             :            "  out_no_family"
      66             :            " ,out_conflict"
      67             :            "  FROM merchant_do_insert_spent_token"
      68             :            "($1, $2, $3, $4, $5);");
      69           4 :   qs = GNUNET_PQ_eval_prepared_singleton_select (
      70             :     pg->conn,
      71             :     "spent_token_insert",
      72             :     params,
      73             :     rs);
      74           4 :   if (qs < 0)
      75           0 :     return qs;
      76           4 :   if (no_fam)
      77             :   {
      78           0 :     GNUNET_break (0);
      79           0 :     return GNUNET_DB_STATUS_HARD_ERROR;
      80             :   }
      81           4 :   if (conflict)
      82             :   {
      83           2 :     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
      84             :                 "Client attempted to double-spend token\n");
      85           2 :     return GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
      86             :   }
      87           2 :   return qs;
      88             : }