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 exchangedb/iterate_active_auditors.c
      18              :  * @brief Implementation of the iterate_active_auditors function for Postgres
      19              :  * @author Christian Grothoff
      20              :  */
      21              : #include "taler/taler_pq_lib.h"
      22              : #include "exchange-database/iterate_active_auditors.h"
      23              : #include "helper.h"
      24              : 
      25              : 
      26              : /**
      27              :  * Closure for #auditors_cb_helper()
      28              :  */
      29              : struct AuditorsIteratorContext
      30              : {
      31              :   /**
      32              :    * Function to call with the results.
      33              :    */
      34              :   TALER_EXCHANGEDB_AuditorsCallback cb;
      35              : 
      36              :   /**
      37              :    * Closure to pass to @e cb
      38              :    */
      39              :   void *cb_cls;
      40              : 
      41              : };
      42              : 
      43              : 
      44              : /**
      45              :  * Helper function for #TALER_EXCHANGEDB_iterate_active_auditors().
      46              :  * Calls the callback with each auditor.
      47              :  *
      48              :  * @param cls a `struct SignkeysIteratorContext`
      49              :  * @param result db results
      50              :  * @param num_results number of results in @a result
      51              :  */
      52              : static void
      53           41 : auditors_cb_helper (void *cls,
      54              :                     PGresult *result,
      55              :                     unsigned int num_results)
      56              : {
      57           41 :   struct AuditorsIteratorContext *dic = cls;
      58              : 
      59           45 :   for (unsigned int i = 0; i<num_results; i++)
      60              :   {
      61              :     struct TALER_AuditorPublicKeyP auditor_pub;
      62              :     char *auditor_url;
      63              :     char *auditor_name;
      64            4 :     struct GNUNET_PQ_ResultSpec rs[] = {
      65            4 :       GNUNET_PQ_result_spec_auto_from_type ("auditor_pub",
      66              :                                             &auditor_pub),
      67            4 :       GNUNET_PQ_result_spec_string ("auditor_url",
      68              :                                     &auditor_url),
      69            4 :       GNUNET_PQ_result_spec_string ("auditor_name",
      70              :                                     &auditor_name),
      71              :       GNUNET_PQ_result_spec_end
      72              :     };
      73              : 
      74            4 :     if (GNUNET_OK !=
      75            4 :         GNUNET_PQ_extract_result (result,
      76              :                                   rs,
      77              :                                   i))
      78              :     {
      79            0 :       GNUNET_break (0);
      80            0 :       return;
      81              :     }
      82            4 :     dic->cb (dic->cb_cls,
      83              :              &auditor_pub,
      84              :              auditor_url,
      85              :              auditor_name);
      86            4 :     GNUNET_PQ_cleanup_result (rs);
      87              :   }
      88              : }
      89              : 
      90              : 
      91              : enum GNUNET_DB_QueryStatus
      92           41 : TALER_EXCHANGEDB_iterate_active_auditors (struct
      93              :                                           TALER_EXCHANGEDB_PostgresContext *pg,
      94              :                                           TALER_EXCHANGEDB_AuditorsCallback cb,
      95              :                                           void *cb_cls)
      96              : {
      97           41 :   struct GNUNET_PQ_QueryParam params[] = {
      98              :     GNUNET_PQ_query_param_end
      99              :   };
     100           41 :   struct AuditorsIteratorContext dic = {
     101              :     .cb = cb,
     102              :     .cb_cls = cb_cls,
     103              :   };
     104              : 
     105           41 :   PREPARE (pg,
     106              :            "select_auditors",
     107              :            "SELECT"
     108              :            " auditor_pub"
     109              :            ",auditor_url"
     110              :            ",auditor_name"
     111              :            " FROM auditors"
     112              :            " WHERE"
     113              :            "   is_active;");
     114              : 
     115           41 :   return GNUNET_PQ_eval_prepared_multi_select (pg->conn,
     116              :                                                "select_auditors",
     117              :                                                params,
     118              :                                                &auditors_cb_helper,
     119              :                                                &dic);
     120              : }