Line data    Source code

       1              : /*
       2              :    This file is part of TALER
       3              :    Copyright (C) 2022, 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 exchangedb/select_aggregation_amounts_for_kyc_check.c
      18              :  * @brief Implementation of the select_aggregation_amounts_for_kyc_check function for Postgres
      19              :  * @author Christian Grothoff
      20              :  */
      21              : #include "taler/taler_pq_lib.h"
      22              : #include "exchange-database/select_aggregation_amounts_for_kyc_check.h"
      23              : #include "helper.h"
      24              : 
      25              : 
      26              : /**
      27              :  * Closure for #get_kyc_amounts_cb().
      28              :  */
      29              : struct KycAmountCheckContext
      30              : {
      31              :   /**
      32              :    * Function to call per result.
      33              :    */
      34              :   TALER_KYCLOGIC_KycAmountCallback cb;
      35              : 
      36              :   /**
      37              :    * Closure for @e cb.
      38              :    */
      39              :   void *cb_cls;
      40              : 
      41              :   /**
      42              :    * Plugin context.
      43              :    */
      44              :   struct TALER_EXCHANGEDB_PostgresContext *pg;
      45              : 
      46              :   /**
      47              :    * Flag set to #GNUNET_OK as long as everything is fine.
      48              :    */
      49              :   enum GNUNET_GenericReturnValue status;
      50              : 
      51              : };
      52              : 
      53              : 
      54              : /**
      55              :  * Invoke the callback for each result.
      56              :  *
      57              :  * @param cls a `struct KycAmountCheckContext *`
      58              :  * @param result SQL result
      59              :  * @param num_results number of rows in @a result
      60              :  */
      61              : static void
      62            2 : get_kyc_amounts_cb (void *cls,
      63              :                     PGresult *result,
      64              :                     unsigned int num_results)
      65              : {
      66            2 :   struct KycAmountCheckContext *ctx = cls;
      67            2 :   struct TALER_EXCHANGEDB_PostgresContext *pg = ctx->pg;
      68              : 
      69            2 :   for (unsigned int i = 0; i < num_results; i++)
      70              :   {
      71              :     struct GNUNET_TIME_Absolute date;
      72              :     struct TALER_Amount amount;
      73            0 :     struct GNUNET_PQ_ResultSpec rs[] = {
      74            0 :       TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
      75              :                                    &amount),
      76            0 :       GNUNET_PQ_result_spec_absolute_time ("date",
      77              :                                            &date),
      78              :       GNUNET_PQ_result_spec_end
      79              :     };
      80              :     enum GNUNET_GenericReturnValue ret;
      81              : 
      82            0 :     if (GNUNET_OK !=
      83            0 :         GNUNET_PQ_extract_result (result,
      84              :                                   rs,
      85              :                                   i))
      86              :     {
      87            0 :       GNUNET_break (0);
      88            0 :       ctx->status = GNUNET_SYSERR;
      89            0 :       return;
      90              :     }
      91            0 :     ret = ctx->cb (ctx->cb_cls,
      92              :                    &amount,
      93              :                    date);
      94            0 :     GNUNET_PQ_cleanup_result (rs);
      95            0 :     switch (ret)
      96              :     {
      97            0 :     case GNUNET_OK:
      98            0 :       continue;
      99            0 :     case GNUNET_NO:
     100            0 :       break;
     101            0 :     case GNUNET_SYSERR:
     102            0 :       ctx->status = GNUNET_SYSERR;
     103            0 :       break;
     104              :     }
     105            0 :     break;
     106              :   }
     107              : }
     108              : 
     109              : 
     110              : enum GNUNET_DB_QueryStatus
     111            2 : TALER_EXCHANGEDB_select_aggregation_amounts_for_kyc_check (
     112              :   struct TALER_EXCHANGEDB_PostgresContext *pg,
     113              :   const struct TALER_NormalizedPaytoHashP *h_payto,
     114              :   struct GNUNET_TIME_Absolute time_limit,
     115              :   TALER_KYCLOGIC_KycAmountCallback kac,
     116              :   void *kac_cls)
     117              : {
     118            2 :   struct GNUNET_PQ_QueryParam params[] = {
     119            2 :     GNUNET_PQ_query_param_auto_from_type (h_payto),
     120            2 :     GNUNET_PQ_query_param_absolute_time (&time_limit),
     121              :     GNUNET_PQ_query_param_end
     122              :   };
     123            2 :   struct KycAmountCheckContext ctx = {
     124              :     .cb = kac,
     125              :     .cb_cls = kac_cls,
     126              :     .pg = pg,
     127              :     .status = GNUNET_OK
     128              :   };
     129              :   enum GNUNET_DB_QueryStatus qs;
     130              : 
     131            2 :   PREPARE (pg,
     132              :            "select_kyc_relevant_aggregation_events",
     133              :            "SELECT"
     134              :            " amount"
     135              :            ",execution_date AS date"
     136              :            " FROM wire_out"
     137              :            " WHERE wire_target_h_payto IN"
     138              :            "   (SELECT wire_target_h_payto"
     139              :            "      FROM wire_targets"
     140              :            "     WHERE h_normalized_payto=$1"
     141              :            "   )"
     142              :            "  AND execution_date >= $2"
     143              :            " ORDER BY execution_date DESC");
     144              : 
     145            2 :   qs = GNUNET_PQ_eval_prepared_multi_select (
     146              :     pg->conn,
     147              :     "select_kyc_relevant_aggregation_events",
     148              :     params,
     149              :     &get_kyc_amounts_cb,
     150              :     &ctx);
     151            2 :   if (GNUNET_OK != ctx.status)
     152            0 :     return GNUNET_DB_STATUS_HARD_ERROR;
     153            2 :   return qs;
     154              : }