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/pg_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 "platform.h"
      22             : #include "taler_error_codes.h"
      23             : #include "taler_dbevents.h"
      24             : #include "taler_pq_lib.h"
      25             : #include "pg_select_deposit_amounts_for_kyc_check.h"
      26             : #include "pg_helper.h"
      27             : 
      28             : /**
      29             :  * Closure for #get_kyc_amounts_cb().
      30             :  */
      31             : struct KycAmountCheckContext
      32             : {
      33             :   /**
      34             :    * Function to call per result.
      35             :    */
      36             :   TALER_EXCHANGEDB_KycAmountCallback cb;
      37             : 
      38             :   /**
      39             :    * Closure for @e cb.
      40             :    */
      41             :   void *cb_cls;
      42             : 
      43             :   /**
      44             :    * Plugin context.
      45             :    */
      46             :   struct PostgresClosure *pg;
      47             : 
      48             :   /**
      49             :    * Flag set to #GNUNET_OK as long as everything is fine.
      50             :    */
      51             :   enum GNUNET_GenericReturnValue status;
      52             : 
      53             : };
      54             : 
      55             : /**
      56             :  * Invoke the callback for each result.
      57             :  *
      58             :  * @param cls a `struct KycAmountCheckContext *`
      59             :  * @param result SQL result
      60             :  * @param num_results number of rows in @a result
      61             :  */
      62             : static void
      63           0 : get_kyc_amounts_cb (void *cls,
      64             :                     PGresult *result,
      65             :                     unsigned int num_results)
      66             : {
      67           0 :   struct KycAmountCheckContext *ctx = cls;
      68           0 :   struct PostgresClosure *pg = ctx->pg;
      69             : 
      70           0 :   for (unsigned int i = 0; i < num_results; i++)
      71             :   {
      72             :     struct GNUNET_TIME_Absolute date;
      73             :     struct TALER_Amount amount;
      74           0 :     struct GNUNET_PQ_ResultSpec rs[] = {
      75           0 :       TALER_PQ_RESULT_SPEC_AMOUNT ("amount",
      76             :                                    &amount),
      77           0 :       GNUNET_PQ_result_spec_absolute_time ("date",
      78             :                                            &date),
      79             :       GNUNET_PQ_result_spec_end
      80             :     };
      81             :     enum GNUNET_GenericReturnValue ret;
      82             : 
      83           0 :     if (GNUNET_OK !=
      84           0 :         GNUNET_PQ_extract_result (result,
      85             :                                   rs,
      86             :                                   i))
      87             :     {
      88           0 :       GNUNET_break (0);
      89           0 :       ctx->status = GNUNET_SYSERR;
      90           0 :       return;
      91             :     }
      92           0 :     ret = ctx->cb (ctx->cb_cls,
      93             :                    &amount,
      94             :                    date);
      95           0 :     GNUNET_PQ_cleanup_result (rs);
      96           0 :     switch (ret)
      97             :     {
      98           0 :     case GNUNET_OK:
      99           0 :       continue;
     100           0 :     case GNUNET_NO:
     101           0 :       break;
     102           0 :     case GNUNET_SYSERR:
     103           0 :       ctx->status = GNUNET_SYSERR;
     104           0 :       break;
     105             :     }
     106           0 :     break;
     107             :   }
     108             : }
     109             : 
     110             : 
     111             : enum GNUNET_DB_QueryStatus
     112           0 : TEH_PG_select_deposit_amounts_for_kyc_check (
     113             :   void *cls,
     114             :   const struct TALER_NormalizedPaytoHashP *h_payto,
     115             :   struct GNUNET_TIME_Absolute time_limit,
     116             :   TALER_EXCHANGEDB_KycAmountCallback kac,
     117             :   void *kac_cls)
     118             : {
     119           0 :   struct PostgresClosure *pg = cls;
     120           0 :   struct GNUNET_PQ_QueryParam params[] = {
     121           0 :     GNUNET_PQ_query_param_auto_from_type (h_payto),
     122           0 :     GNUNET_PQ_query_param_absolute_time (&time_limit),
     123             :     GNUNET_PQ_query_param_end
     124             :   };
     125           0 :   struct KycAmountCheckContext ctx = {
     126             :     .cb = kac,
     127             :     .cb_cls = kac_cls,
     128             :     .pg = pg,
     129             :     .status = GNUNET_OK
     130             :   };
     131             :   enum GNUNET_DB_QueryStatus qs;
     132             : 
     133           0 :   PREPARE (pg,
     134             :            "select_kyc_relevant_deposit_events",
     135             :            "SELECT"
     136             :            " cd.amount_with_fee AS amount"
     137             :            ",bd.exchange_timestamp AS date"
     138             :            " FROM batch_deposits bd"
     139             :            " JOIN coin_deposits cd"
     140             :            "   USING (batch_deposit_serial_id)"
     141             :            " WHERE wire_target_h_payto IN ("
     142             :            "   SELECT wire_target_h_payto"
     143             :            "     FROM wire_targets"
     144             :            "    WHERE h_normalized_payto=$1"
     145             :            "   )"
     146             :            "   AND bd.exchange_timestamp >= $2"
     147             :            " ORDER BY bd.exchange_timestamp DESC");
     148           0 :   qs = GNUNET_PQ_eval_prepared_multi_select (
     149             :     pg->conn,
     150             :     "select_kyc_relevant_deposit_events",
     151             :     params,
     152             :     &get_kyc_amounts_cb,
     153             :     &ctx);
     154           0 :   if (GNUNET_OK != ctx.status)
     155           0 :     return GNUNET_DB_STATUS_HARD_ERROR;
     156           0 :   return qs;
     157             : }