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/pg_select_withdraw_amounts_for_kyc_check.c
      18             :  * @brief Implementation of the select_withdraw_amounts_for_kyc_check 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_withdraw_amounts_for_kyc_check.h"
      26             : #include "pg_select_aggregation_amounts_for_kyc_check.h"
      27             : #include "pg_helper.h"
      28             : 
      29             : 
      30             : /**
      31             :  * Closure for #get_kyc_amounts_cb().
      32             :  */
      33             : struct KycAmountCheckContext
      34             : {
      35             :   /**
      36             :    * Function to call per result.
      37             :    */
      38             :   TALER_EXCHANGEDB_KycAmountCallback 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             :    * Flag set to #GNUNET_OK as long as everything is fine.
      52             :    */
      53             :   enum GNUNET_GenericReturnValue status;
      54             : 
      55             : };
      56             : 
      57             : /**
      58             :  * Invoke the callback for each result.
      59             :  *
      60             :  * @param cls a `struct KycAmountCheckContext *`
      61             :  * @param result SQL result
      62             :  * @param num_results number of rows in @a result
      63             :  */
      64             : static void
      65          19 : get_kyc_amounts_cb (void *cls,
      66             :                     PGresult *result,
      67             :                     unsigned int num_results)
      68             : {
      69          19 :   struct KycAmountCheckContext *ctx = cls;
      70          19 :   struct PostgresClosure *pg = ctx->pg;
      71             : 
      72          43 :   for (unsigned int i = 0; i < num_results; i++)
      73             :   {
      74             :     struct GNUNET_TIME_Absolute date;
      75             :     struct TALER_Amount amount;
      76          24 :     struct GNUNET_PQ_ResultSpec rs[] = {
      77          24 :       TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
      78             :                                    &amount),
      79          24 :       GNUNET_PQ_result_spec_absolute_time ("date",
      80             :                                            &date),
      81             :       GNUNET_PQ_result_spec_end
      82             :     };
      83             :     enum GNUNET_GenericReturnValue ret;
      84             : 
      85          24 :     if (GNUNET_OK !=
      86          24 :         GNUNET_PQ_extract_result (result,
      87             :                                   rs,
      88             :                                   i))
      89             :     {
      90           0 :       GNUNET_break (0);
      91           0 :       ctx->status = GNUNET_SYSERR;
      92           0 :       return;
      93             :     }
      94          24 :     ret = ctx->cb (ctx->cb_cls,
      95             :                    &amount,
      96             :                    date);
      97          24 :     GNUNET_PQ_cleanup_result (rs);
      98          24 :     switch (ret)
      99             :     {
     100          24 :     case GNUNET_OK:
     101          24 :       continue;
     102           0 :     case GNUNET_NO:
     103           0 :       break;
     104           0 :     case GNUNET_SYSERR:
     105           0 :       ctx->status = GNUNET_SYSERR;
     106           0 :       break;
     107             :     }
     108           0 :     break;
     109             :   }
     110             : }
     111             : 
     112             : 
     113             : enum GNUNET_DB_QueryStatus
     114          19 : TEH_PG_select_withdraw_amounts_for_kyc_check (
     115             :   void *cls,
     116             :   const struct TALER_NormalizedPaytoHashP *h_payto,
     117             :   struct GNUNET_TIME_Absolute time_limit,
     118             :   TALER_EXCHANGEDB_KycAmountCallback kac,
     119             :   void *kac_cls)
     120             : {
     121          19 :   struct PostgresClosure *pg = cls;
     122          19 :   struct GNUNET_PQ_QueryParam params[] = {
     123          19 :     GNUNET_PQ_query_param_auto_from_type (h_payto),
     124          19 :     GNUNET_PQ_query_param_absolute_time (&time_limit),
     125             :     GNUNET_PQ_query_param_end
     126             :   };
     127          19 :   struct KycAmountCheckContext ctx = {
     128             :     .cb = kac,
     129             :     .cb_cls = kac_cls,
     130             :     .pg = pg,
     131             :     .status = GNUNET_OK
     132             :   };
     133             :   enum GNUNET_DB_QueryStatus qs;
     134             : 
     135          19 :   PREPARE (pg,
     136             :            "select_withdraw_amounts_for_kyc_check",
     137             :            "SELECT"
     138             :            " wd.amount_with_fee AS amount"
     139             :            ",wd.execution_date AS date"
     140             :            " FROM reserves_in ri"
     141             :            " JOIN reserve_history rh"
     142             :            "   ON (rh.reserve_pub = ri.reserve_pub)"
     143             :            " JOIN withdraw wd"
     144             :            "   ON (wd.withdraw_id = rh.serial_id)"
     145             :            " WHERE ri.wire_source_h_payto IN ("
     146             :            "   SELECT wire_target_h_payto"
     147             :            "     FROM wire_targets"
     148             :            "    WHERE h_normalized_payto=$1"
     149             :            "   )"
     150             :            "   AND rh.table_name='withdraw'"
     151             :            "   AND wd.execution_date >= $2"
     152             :            " ORDER BY rh.reserve_history_serial_id DESC");
     153          19 :   qs = GNUNET_PQ_eval_prepared_multi_select (
     154             :     pg->conn,
     155             :     "select_withdraw_amounts_for_kyc_check",
     156             :     params,
     157             :     &get_kyc_amounts_cb,
     158             :     &ctx);
     159          19 :   if (GNUNET_OK != ctx.status)
     160           0 :     return GNUNET_DB_STATUS_HARD_ERROR;
     161          19 :   return qs;
     162             : }