Line data    Source code

       1             : /*
       2             :    This file is part of TALER
       3             :    Copyright (C) 2025 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_select_all_purse_deletions_above_serial_id.c
      18             :  * @brief Implementation of the select_all_purse_deletions_above_serial_id 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_select_all_purse_deletions_above_serial_id.h"
      26             : #include "pg_helper.h"
      27             : 
      28             : 
      29             : /**
      30             :  * Closure for #all_purse_deletion_serial_helper_cb().
      31             :  */
      32             : struct AllPurseDeletionSerialContext
      33             : {
      34             : 
      35             :   /**
      36             :    * Callback to call.
      37             :    */
      38             :   TALER_EXCHANGEDB_AllPurseDeletionsCallback cb;
      39             : 
      40             :   /**
      41             :    * Closure for @e cb.
      42             :    */
      43             :   void *cb_cls;
      44             : 
      45             :   /**
      46             :    * Plugin context.
      47             :    */
      48             :   struct PostgresClosure *pg;
      49             : 
      50             :   /**
      51             :    * Status code, set to #GNUNET_SYSERR on hard errors.
      52             :    */
      53             :   enum GNUNET_GenericReturnValue status;
      54             : };
      55             : 
      56             : 
      57             : /**
      58             :  * Helper function to be called with the results of a SELECT statement
      59             :  * that has returned @a num_results results.
      60             :  *
      61             :  * @param cls closure of type `struct PurseRefundSerialContext`
      62             :  * @param result the postgres result
      63             :  * @param num_results the number of results in @a result
      64             :  */
      65             : static void
      66          74 : all_purse_deletion_serial_helper_cb (void *cls,
      67             :                                      PGresult *result,
      68             :                                      unsigned int num_results)
      69             : {
      70          74 :   struct AllPurseDeletionSerialContext *dsc = cls;
      71             : 
      72          74 :   for (unsigned int i = 0; i<num_results; i++)
      73             :   {
      74             :     struct TALER_PurseContractPublicKeyP purse_pub;
      75             :     struct TALER_PurseContractSignatureP purse_sig;
      76             :     uint64_t rowid;
      77           0 :     struct GNUNET_PQ_ResultSpec rs[] = {
      78           0 :       GNUNET_PQ_result_spec_auto_from_type ("purse_pub",
      79             :                                             &purse_pub),
      80           0 :       GNUNET_PQ_result_spec_auto_from_type ("purse_sig",
      81             :                                             &purse_sig),
      82           0 :       GNUNET_PQ_result_spec_uint64 ("purse_deletion_serial_id",
      83             :                                     &rowid),
      84             :       GNUNET_PQ_result_spec_end
      85             :     };
      86             :     enum GNUNET_GenericReturnValue ret;
      87             : 
      88           0 :     if (GNUNET_OK !=
      89           0 :         GNUNET_PQ_extract_result (result,
      90             :                                   rs,
      91             :                                   i))
      92             :     {
      93           0 :       GNUNET_break (0);
      94           0 :       dsc->status = GNUNET_SYSERR;
      95           0 :       return;
      96             :     }
      97           0 :     ret = dsc->cb (dsc->cb_cls,
      98             :                    rowid,
      99             :                    &purse_pub,
     100             :                    &purse_sig);
     101           0 :     GNUNET_PQ_cleanup_result (rs);
     102           0 :     if (GNUNET_OK != ret)
     103           0 :       break;
     104             :   }
     105             : }
     106             : 
     107             : 
     108             : enum GNUNET_DB_QueryStatus
     109          74 : TEH_PG_select_all_purse_deletions_above_serial_id (
     110             :   void *cls,
     111             :   uint64_t serial_id,
     112             :   TALER_EXCHANGEDB_AllPurseDeletionsCallback cb,
     113             :   void *cb_cls)
     114             : {
     115          74 :   struct PostgresClosure *pg = cls;
     116          74 :   struct GNUNET_PQ_QueryParam params[] = {
     117          74 :     GNUNET_PQ_query_param_uint64 (&serial_id),
     118             :     GNUNET_PQ_query_param_end
     119             :   };
     120          74 :   struct AllPurseDeletionSerialContext dsc = {
     121             :     .cb = cb,
     122             :     .cb_cls = cb_cls,
     123             :     .pg = pg,
     124             :     .status = GNUNET_OK
     125             :   };
     126             :   enum GNUNET_DB_QueryStatus qs;
     127             : 
     128          74 :   PREPARE (pg,
     129             :            "audit_select_all_purse_deletions_above_serial_id",
     130             :            "SELECT"
     131             :            " purse_pub"
     132             :            ",purse_sig"
     133             :            ",purse_deletion_serial_id"
     134             :            " FROM purse_deletion"
     135             :            " WHERE purse_deletion_serial_id>=$1"
     136             :            " ORDER BY purse_deletion_serial_id ASC;");
     137          74 :   qs = GNUNET_PQ_eval_prepared_multi_select (
     138             :     pg->conn,
     139             :     "audit_select_all_purse_deletions_above_serial_id",
     140             :     params,
     141             :     &all_purse_deletion_serial_helper_cb,
     142             :     &dsc);
     143          74 :   if (GNUNET_OK != dsc.status)
     144           0 :     return GNUNET_DB_STATUS_HARD_ERROR;
     145          74 :   return qs;
     146             : }