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 pg_iterate_kyc_reference.c
      18             :  * @brief Low-level (statement-level) Postgres database access for the exchange
      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_iterate_kyc_reference.h"
      26             : #include "pg_helper.h"
      27             : 
      28             : 
      29             : /**
      30             :  * Closure for #iterate_kyc_reference_cb()
      31             :  */
      32             : struct IteratorContext
      33             : {
      34             :   /**
      35             :    * Function to call with the results.
      36             :    */
      37             :   TALER_EXCHANGEDB_LegitimizationProcessCallback cb;
      38             : 
      39             :   /**
      40             :    * Closure to pass to @e cb
      41             :    */
      42             :   void *cb_cls;
      43             : 
      44             :   /**
      45             :    * Plugin context.
      46             :    */
      47             :   struct PostgresClosure *pg;
      48             : };
      49             : 
      50             : 
      51             : /**
      52             :  * Helper function for #TEH_PG_iterate_kyc_reference().
      53             :  * Calls the callback with each denomination key.
      54             :  *
      55             :  * @param cls a `struct IteratorContext`
      56             :  * @param result db results
      57             :  * @param num_results number of results in @a result
      58             :  */
      59             : static void
      60           0 : iterate_kyc_reference_cb (void *cls,
      61             :                           PGresult *result,
      62             :                           unsigned int num_results)
      63             : {
      64           0 :   struct IteratorContext *ic = cls;
      65             : 
      66           0 :   for (unsigned int i = 0; i<num_results; i++)
      67             :   {
      68             :     char *kyc_provider_name_name;
      69             :     char *provider_user_id;
      70             :     char *legitimization_id;
      71           0 :     struct GNUNET_PQ_ResultSpec rs[] = {
      72           0 :       GNUNET_PQ_result_spec_string ("provider_name",
      73             :                                     &kyc_provider_name_name),
      74           0 :       GNUNET_PQ_result_spec_string ("provider_user_id",
      75             :                                     &provider_user_id),
      76           0 :       GNUNET_PQ_result_spec_string ("provider_legitimization_id",
      77             :                                     &legitimization_id),
      78             :       GNUNET_PQ_result_spec_end
      79             :     };
      80             : 
      81           0 :     if (GNUNET_OK !=
      82           0 :         GNUNET_PQ_extract_result (result,
      83             :                                   rs,
      84             :                                   i))
      85             :     {
      86           0 :       GNUNET_break (0);
      87           0 :       return;
      88             :     }
      89           0 :     ic->cb (ic->cb_cls,
      90             :             kyc_provider_name_name,
      91             :             provider_user_id,
      92             :             legitimization_id);
      93           0 :     GNUNET_PQ_cleanup_result (rs);
      94             :   }
      95             : }
      96             : 
      97             : 
      98             : enum GNUNET_DB_QueryStatus
      99           0 : TEH_PG_iterate_kyc_reference (
     100             :   void *cls,
     101             :   const struct TALER_NormalizedPaytoHashP *h_payto,
     102             :   TALER_EXCHANGEDB_LegitimizationProcessCallback lpc,
     103             :   void *lpc_cls)
     104             : {
     105           0 :   struct PostgresClosure *pg = cls;
     106           0 :   struct GNUNET_PQ_QueryParam params[] = {
     107           0 :     GNUNET_PQ_query_param_auto_from_type (h_payto),
     108             :     GNUNET_PQ_query_param_end
     109             :   };
     110           0 :   struct IteratorContext ic = {
     111             :     .cb = lpc,
     112             :     .cb_cls = lpc_cls,
     113             :     .pg = pg
     114             :   };
     115             : 
     116           0 :   PREPARE (pg,
     117             :            "iterate_kyc_reference",
     118             :            "SELECT "
     119             :            " provider_name"
     120             :            ",provider_user_id"
     121             :            ",provider_legitimization_id"
     122             :            " FROM legitimization_processes"
     123             :            " WHERE h_payto=$1;");
     124           0 :   return GNUNET_PQ_eval_prepared_multi_select (
     125             :     pg->conn,
     126             :     "iterate_kyc_reference",
     127             :     params,
     128             :     &iterate_kyc_reference_cb,
     129             :     &ic);
     130             : }