Line data    Source code

       1             : /*
       2             :    This file is part of TALER
       3             :    Copyright (C) 2022 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_insert_contract.c
      18             :  * @brief Implementation of the insert_contract function for Postgres
      19             :  * @author Christian Grothoff
      20             :  */
      21             : #include "platform.h"
      22             : #include "taler_error_codes.h"
      23             : #include "taler_dbevents.h"
      24             : #include "taler_pq_lib.h"
      25             : #include "pg_insert_contract.h"
      26             : #include "pg_select_contract_by_purse.h"
      27             : #include "pg_helper.h"
      28             : 
      29             : enum GNUNET_DB_QueryStatus
      30          20 : TEH_PG_insert_contract (
      31             :   void *cls,
      32             :   const struct TALER_PurseContractPublicKeyP *purse_pub,
      33             :   const struct TALER_EncryptedContract *econtract,
      34             :   bool *in_conflict)
      35             : {
      36          20 :   struct PostgresClosure *pg = cls;
      37             :   enum GNUNET_DB_QueryStatus qs;
      38          20 :   struct GNUNET_PQ_QueryParam params[] = {
      39          20 :     GNUNET_PQ_query_param_auto_from_type (purse_pub),
      40          20 :     GNUNET_PQ_query_param_auto_from_type (&econtract->contract_pub),
      41          20 :     GNUNET_PQ_query_param_fixed_size (econtract->econtract,
      42          20 :                                       econtract->econtract_size),
      43          20 :     GNUNET_PQ_query_param_auto_from_type (&econtract->econtract_sig),
      44             :     GNUNET_PQ_query_param_end
      45             :   };
      46             : 
      47          20 :   *in_conflict = false;
      48             :   /* Used in #postgres_insert_contract() */
      49          20 :   PREPARE (pg,
      50             :            "insert_contract",
      51             :            "INSERT INTO contracts"
      52             :            "  (purse_pub"
      53             :            "  ,pub_ckey"
      54             :            "  ,e_contract"
      55             :            "  ,contract_sig"
      56             :            "  ,purse_expiration"
      57             :            "  ) SELECT "
      58             :            "  $1, $2, $3, $4, purse_expiration"
      59             :            "  FROM purse_requests"
      60             :            "  WHERE purse_pub=$1"
      61             :            "  ON CONFLICT DO NOTHING;");
      62          20 :   qs = GNUNET_PQ_eval_prepared_non_select (pg->conn,
      63             :                                            "insert_contract",
      64             :                                            params);
      65          20 :   if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS != qs)
      66          20 :     return qs;
      67             :   {
      68             :     struct TALER_EncryptedContract econtract2;
      69             : 
      70           0 :     qs = TEH_PG_select_contract_by_purse (pg,
      71             :                                           purse_pub,
      72             :                                           &econtract2);
      73           0 :     if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != qs)
      74             :     {
      75           0 :       GNUNET_break (0);
      76           0 :       return GNUNET_DB_STATUS_HARD_ERROR;
      77             :     }
      78           0 :     if ( (0 == GNUNET_memcmp (&econtract->contract_pub,
      79           0 :                               &econtract2.contract_pub)) &&
      80           0 :          (econtract2.econtract_size ==
      81           0 :           econtract->econtract_size) &&
      82           0 :          (0 == memcmp (econtract2.econtract,
      83           0 :                        econtract->econtract,
      84           0 :                        econtract->econtract_size)) )
      85             :     {
      86           0 :       GNUNET_free (econtract2.econtract);
      87           0 :       return GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
      88             :     }
      89           0 :     GNUNET_free (econtract2.econtract);
      90           0 :     *in_conflict = true;
      91           0 :     return GNUNET_DB_STATUS_SUCCESS_ONE_RESULT;
      92             :   }
      93             : }