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              : }