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