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/pg_iterate_active_auditors.c
      18              :  * @brief Implementation of the iterate_active_auditors function for Postgres
      19              :  * @author Christian Grothoff
      20              :  */
      21              : #include "taler/platform.h"
      22              : #include "taler/taler_error_codes.h"
      23              : #include "taler/taler_dbevents.h"
      24              : #include "taler/taler_pq_lib.h"
      25              : #include "pg_iterate_active_auditors.h"
      26              : #include "pg_helper.h"
      27              : 
      28              : 
      29              : /**
      30              :  * Closure for #auditors_cb_helper()
      31              :  */
      32              : struct AuditorsIteratorContext
      33              : {
      34              :   /**
      35              :    * Function to call with the results.
      36              :    */
      37              :   TALER_EXCHANGEDB_AuditorsCallback cb;
      38              : 
      39              :   /**
      40              :    * Closure to pass to @e cb
      41              :    */
      42              :   void *cb_cls;
      43              : 
      44              : };
      45              : 
      46              : 
      47              : /**
      48              :  * Helper function for #TEH_PG_iterate_active_auditors().
      49              :  * Calls the callback with each auditor.
      50              :  *
      51              :  * @param cls a `struct SignkeysIteratorContext`
      52              :  * @param result db results
      53              :  * @param num_results number of results in @a result
      54              :  */
      55              : static void
      56           51 : auditors_cb_helper (void *cls,
      57              :                     PGresult *result,
      58              :                     unsigned int num_results)
      59              : {
      60           51 :   struct AuditorsIteratorContext *dic = cls;
      61              : 
      62           55 :   for (unsigned int i = 0; i<num_results; i++)
      63              :   {
      64              :     struct TALER_AuditorPublicKeyP auditor_pub;
      65              :     char *auditor_url;
      66              :     char *auditor_name;
      67            4 :     struct GNUNET_PQ_ResultSpec rs[] = {
      68            4 :       GNUNET_PQ_result_spec_auto_from_type ("auditor_pub",
      69              :                                             &auditor_pub),
      70            4 :       GNUNET_PQ_result_spec_string ("auditor_url",
      71              :                                     &auditor_url),
      72            4 :       GNUNET_PQ_result_spec_string ("auditor_name",
      73              :                                     &auditor_name),
      74              :       GNUNET_PQ_result_spec_end
      75              :     };
      76              : 
      77            4 :     if (GNUNET_OK !=
      78            4 :         GNUNET_PQ_extract_result (result,
      79              :                                   rs,
      80              :                                   i))
      81              :     {
      82            0 :       GNUNET_break (0);
      83            0 :       return;
      84              :     }
      85            4 :     dic->cb (dic->cb_cls,
      86              :              &auditor_pub,
      87              :              auditor_url,
      88              :              auditor_name);
      89            4 :     GNUNET_PQ_cleanup_result (rs);
      90              :   }
      91              : }
      92              : 
      93              : 
      94              : enum GNUNET_DB_QueryStatus
      95           51 : TEH_PG_iterate_active_auditors (void *cls,
      96              :                                 TALER_EXCHANGEDB_AuditorsCallback cb,
      97              :                                 void *cb_cls)
      98              : {
      99           51 :   struct PostgresClosure *pg = cls;
     100           51 :   struct GNUNET_PQ_QueryParam params[] = {
     101              :     GNUNET_PQ_query_param_end
     102              :   };
     103           51 :   struct AuditorsIteratorContext dic = {
     104              :     .cb = cb,
     105              :     .cb_cls = cb_cls,
     106              :   };
     107              : 
     108           51 :   PREPARE (pg,
     109              :            "select_auditors",
     110              :            "SELECT"
     111              :            " auditor_pub"
     112              :            ",auditor_url"
     113              :            ",auditor_name"
     114              :            " FROM auditors"
     115              :            " WHERE"
     116              :            "   is_active;");
     117              : 
     118           51 :   return GNUNET_PQ_eval_prepared_multi_select (pg->conn,
     119              :                                                "select_auditors",
     120              :                                                params,
     121              :                                                &auditors_cb_helper,
     122              :                                                &dic);
     123              : }