LCOV - code coverage report
Current view: top level - exchangedb - pg_select_refreshes_above_serial_id.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 27 32 84.4 %
Date: 2025-06-05 21:03:14 Functions: 2 2 100.0 %

          Line data    Source code
       1             : /*
       2             :    This file is part of TALER
       3             :    Copyright (C) 2022, 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_refreshes_above_serial_id.c
      18             :  * @brief Implementation of the select_refreshes_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_refreshes_above_serial_id.h"
      26             : #include "pg_helper.h"
      27             : 
      28             : 
      29             : /**
      30             :  * Closure for #refreshs_serial_helper_cb().
      31             :  */
      32             : struct RefreshsSerialContext
      33             : {
      34             : 
      35             :   /**
      36             :    * Callback to call.
      37             :    */
      38             :   TALER_EXCHANGEDB_RefreshesCallback 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 RefreshsSerialContext`
      62             :  * @param result the postgres result
      63             :  * @param num_results the number of results in @a result
      64             :  */
      65             : static void
      66          74 : refreshs_serial_helper_cb (void *cls,
      67             :                            PGresult *result,
      68             :                            unsigned int num_results)
      69             : {
      70          74 :   struct RefreshsSerialContext *rsc = cls;
      71          74 :   struct PostgresClosure *pg = rsc->pg;
      72             : 
      73         210 :   for (unsigned int i = 0; i<num_results; i++)
      74             :   {
      75             :     struct TALER_DenominationPublicKey old_denom_pub;
      76             :     struct TALER_CoinSpendPublicKeyP coin_pub;
      77             :     struct TALER_CoinSpendSignatureP coin_sig;
      78             :     struct TALER_AgeCommitmentHash h_age_commitment;
      79             :     bool ac_isnull;
      80             :     struct TALER_Amount amount_with_fee;
      81             :     uint64_t rowid;
      82             :     struct TALER_RefreshCommitmentP rc;
      83             :     size_t num_nds;
      84             :     uint64_t *nds;
      85         136 :     struct GNUNET_PQ_ResultSpec rs[] = {
      86         136 :       TALER_PQ_result_spec_denom_pub ("old_denom_pub",
      87             :                                       &old_denom_pub),
      88         136 :       GNUNET_PQ_result_spec_auto_from_type ("old_coin_pub",
      89             :                                             &coin_pub),
      90         136 :       GNUNET_PQ_result_spec_allow_null (
      91             :         GNUNET_PQ_result_spec_auto_from_type ("age_commitment_hash",
      92             :                                               &h_age_commitment),
      93             :         &ac_isnull),
      94         136 :       GNUNET_PQ_result_spec_auto_from_type ("old_coin_sig",
      95             :                                             &coin_sig),
      96         136 :       TALER_PQ_RESULT_SPEC_AMOUNT ("amount_with_fee",
      97             :                                    &amount_with_fee),
      98         136 :       GNUNET_PQ_result_spec_uint64 ("refresh_id",
      99             :                                     &rowid),
     100         136 :       GNUNET_PQ_result_spec_auto_from_type ("rc",
     101             :                                             &rc),
     102         136 :       GNUNET_PQ_result_spec_array_uint64 (pg->conn,
     103             :                                           "new_denominations_serials",
     104             :                                           &num_nds,
     105             :                                           &nds),
     106             :       GNUNET_PQ_result_spec_end
     107             :     };
     108             :     enum GNUNET_GenericReturnValue ret;
     109             : 
     110         136 :     if (GNUNET_OK !=
     111         136 :         GNUNET_PQ_extract_result (result,
     112             :                                   rs,
     113             :                                   i))
     114             :     {
     115           0 :       GNUNET_break (0);
     116           0 :       rsc->status = GNUNET_SYSERR;
     117           0 :       return;
     118             :     }
     119             : 
     120         136 :     ret = rsc->cb (rsc->cb_cls,
     121             :                    rowid,
     122             :                    &old_denom_pub,
     123             :                    &coin_pub,
     124             :                    &coin_sig,
     125             :                    ac_isnull ? NULL : &h_age_commitment,
     126             :                    &amount_with_fee,
     127             :                    num_nds,
     128             :                    nds,
     129             :                    &rc);
     130         136 :     GNUNET_PQ_cleanup_result (rs);
     131         136 :     if (GNUNET_OK != ret)
     132           0 :       break;
     133             :   }
     134             : }
     135             : 
     136             : 
     137             : enum GNUNET_DB_QueryStatus
     138          74 : TEH_PG_select_refreshes_above_serial_id (
     139             :   void *cls,
     140             :   uint64_t serial_id,
     141             :   TALER_EXCHANGEDB_RefreshesCallback cb,
     142             :   void *cb_cls)
     143             : {
     144          74 :   struct PostgresClosure *pg = cls;
     145          74 :   struct GNUNET_PQ_QueryParam params[] = {
     146          74 :     GNUNET_PQ_query_param_uint64 (&serial_id),
     147             :     GNUNET_PQ_query_param_end
     148             :   };
     149          74 :   struct RefreshsSerialContext rsc = {
     150             :     .cb = cb,
     151             :     .cb_cls = cb_cls,
     152             :     .pg = pg,
     153             :     .status = GNUNET_OK
     154             :   };
     155             :   enum GNUNET_DB_QueryStatus qs;
     156             : 
     157          74 :   PREPARE (pg,
     158             :            "select_refreshes_above_serial_id",
     159             :            "SELECT"
     160             :            " denom.denom_pub AS old_denom_pub"
     161             :            ",r.old_coin_pub"
     162             :            ",kc.age_commitment_hash"
     163             :            ",r.old_coin_sig"
     164             :            ",r.amount_with_fee"
     165             :            ",r.refresh_id"
     166             :            ",r.rc"
     167             :            ",r.denom_serials AS new_denominations_serials"
     168             :            " FROM refresh r"
     169             :            " JOIN known_coins kc"
     170             :            "   ON (r.old_coin_pub = kc.coin_pub)"
     171             :            " JOIN denominations denom"
     172             :            "   ON (kc.denominations_serial = denom.denominations_serial)"
     173             :            " WHERE refresh_id>=$1"
     174             :            " ORDER BY refresh_id ASC;");
     175          74 :   qs = GNUNET_PQ_eval_prepared_multi_select (
     176             :     pg->conn,
     177             :     "select_refreshes_above_serial_id",
     178             :     params,
     179             :     &refreshs_serial_helper_cb,
     180             :     &rsc);
     181          74 :   if (GNUNET_OK != rsc.status)
     182           0 :     return GNUNET_DB_STATUS_HARD_ERROR;
     183          74 :   return qs;
     184             : }

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