Line data    Source code

       1              : /*
       2              :    This file is part of TALER
       3              :    Copyright (C) 2022 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 iterate_kyc_reference.c
      18              :  * @brief Low-level (statement-level) Postgres database access for the exchange
      19              :  * @author Christian Grothoff
      20              :  */
      21              : #include "taler/taler_pq_lib.h"
      22              : #include "exchange-database/iterate_kyc_reference.h"
      23              : #include "helper.h"
      24              : 
      25              : 
      26              : /**
      27              :  * Closure for #iterate_kyc_reference_cb()
      28              :  */
      29              : struct IteratorContext
      30              : {
      31              :   /**
      32              :    * Function to call with the results.
      33              :    */
      34              :   TALER_EXCHANGEDB_LegitimizationProcessCallback cb;
      35              : 
      36              :   /**
      37              :    * Closure to pass to @e cb
      38              :    */
      39              :   void *cb_cls;
      40              : 
      41              :   /**
      42              :    * Plugin context.
      43              :    */
      44              :   struct TALER_EXCHANGEDB_PostgresContext *pg;
      45              : };
      46              : 
      47              : 
      48              : /**
      49              :  * Helper function for #TALER_EXCHANGEDB_iterate_kyc_reference().
      50              :  * Calls the callback with each denomination key.
      51              :  *
      52              :  * @param cls a `struct IteratorContext`
      53              :  * @param result db results
      54              :  * @param num_results number of results in @a result
      55              :  */
      56              : static void
      57            0 : iterate_kyc_reference_cb (void *cls,
      58              :                           PGresult *result,
      59              :                           unsigned int num_results)
      60              : {
      61            0 :   struct IteratorContext *ic = cls;
      62              : 
      63            0 :   for (unsigned int i = 0; i<num_results; i++)
      64              :   {
      65              :     char *kyc_provider_name_name;
      66              :     char *provider_user_id;
      67              :     char *legitimization_id;
      68            0 :     struct GNUNET_PQ_ResultSpec rs[] = {
      69            0 :       GNUNET_PQ_result_spec_string ("provider_name",
      70              :                                     &kyc_provider_name_name),
      71            0 :       GNUNET_PQ_result_spec_string ("provider_user_id",
      72              :                                     &provider_user_id),
      73            0 :       GNUNET_PQ_result_spec_string ("provider_legitimization_id",
      74              :                                     &legitimization_id),
      75              :       GNUNET_PQ_result_spec_end
      76              :     };
      77              : 
      78            0 :     if (GNUNET_OK !=
      79            0 :         GNUNET_PQ_extract_result (result,
      80              :                                   rs,
      81              :                                   i))
      82              :     {
      83            0 :       GNUNET_break (0);
      84            0 :       return;
      85              :     }
      86            0 :     ic->cb (ic->cb_cls,
      87              :             kyc_provider_name_name,
      88              :             provider_user_id,
      89              :             legitimization_id);
      90            0 :     GNUNET_PQ_cleanup_result (rs);
      91              :   }
      92              : }
      93              : 
      94              : 
      95              : enum GNUNET_DB_QueryStatus
      96            0 : TALER_EXCHANGEDB_iterate_kyc_reference (
      97              :   struct TALER_EXCHANGEDB_PostgresContext *pg,
      98              :   const struct TALER_NormalizedPaytoHashP *h_payto,
      99              :   TALER_EXCHANGEDB_LegitimizationProcessCallback lpc,
     100              :   void *lpc_cls)
     101              : {
     102            0 :   struct GNUNET_PQ_QueryParam params[] = {
     103            0 :     GNUNET_PQ_query_param_auto_from_type (h_payto),
     104              :     GNUNET_PQ_query_param_end
     105              :   };
     106            0 :   struct IteratorContext ic = {
     107              :     .cb = lpc,
     108              :     .cb_cls = lpc_cls,
     109              :     .pg = pg
     110              :   };
     111              : 
     112            0 :   PREPARE (pg,
     113              :            "iterate_kyc_reference",
     114              :            "SELECT "
     115              :            " provider_name"
     116              :            ",provider_user_id"
     117              :            ",provider_legitimization_id"
     118              :            " FROM legitimization_processes"
     119              :            " WHERE h_payto=$1;");
     120            0 :   return GNUNET_PQ_eval_prepared_multi_select (
     121              :     pg->conn,
     122              :     "iterate_kyc_reference",
     123              :     params,
     124              :     &iterate_kyc_reference_cb,
     125              :     &ic);
     126              : }