Line data    Source code

       1              : /*
       2              :    This file is part of TALER
       3              :    Copyright (C) 2022, 2023 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 src/backenddb/iterate_wirewatch_accounts.c
      18              :  * @brief Implementation of the iterate_wirewatch_accounts function for Postgres
      19              :  * @author Christian Grothoff
      20              :  */
      21              : #include "platform.h"
      22              : #include <taler/taler_pq_lib.h>
      23              : #include "merchant-database/iterate_wirewatch_accounts.h"
      24              : #include "helper.h"
      25              : 
      26              : 
      27              : /**
      28              :  * Closure for #handle_results().
      29              :  */
      30              : struct Context
      31              : {
      32              :   /**
      33              :    * Function to call with results.
      34              :    */
      35              :   TALER_MERCHANTDB_WirewatchWorkCallback cb;
      36              : 
      37              :   /**
      38              :    * Closure for @e cb.
      39              :    */
      40              :   void *cb_cls;
      41              : 
      42              :   /**
      43              :    * Set to true if the parsing failed.
      44              :    */
      45              :   bool failure;
      46              : };
      47              : 
      48              : 
      49              : /**
      50              :  * Function to be called with the results of a SELECT statement
      51              :  * that has returned @a num_results results about accounts.
      52              :  *
      53              :  * @param cls of type `struct Context *`
      54              :  * @param result the postgres result
      55              :  * @param num_results the number of results in @a result
      56              :  */
      57              : static void
      58            4 : handle_results (void *cls,
      59              :                 PGresult *result,
      60              :                 unsigned int num_results)
      61              : {
      62            4 :   struct Context *ctx = cls;
      63              : 
      64            8 :   for (unsigned int i = 0; i < num_results; i++)
      65              :   {
      66              :     char *instance;
      67              :     struct TALER_FullPayto payto_uri;
      68              :     char *facade_url;
      69            4 :     json_t *credential = NULL;
      70              :     uint64_t last_serial;
      71            4 :     struct GNUNET_PQ_ResultSpec rs[] = {
      72            4 :       GNUNET_PQ_result_spec_string ("out_merchant_id",
      73              :                                     &instance),
      74            4 :       GNUNET_PQ_result_spec_string ("out_payto_uri",
      75              :                                     &payto_uri.full_payto),
      76            4 :       GNUNET_PQ_result_spec_string ("out_credit_facade_url",
      77              :                                     &facade_url),
      78            4 :       GNUNET_PQ_result_spec_allow_null (
      79              :         TALER_PQ_result_spec_json ("out_credit_facade_credentials",
      80              :                                    &credential),
      81              :         NULL),
      82            4 :       GNUNET_PQ_result_spec_uint64 ("out_last_bank_serial",
      83              :                                     &last_serial),
      84              :       GNUNET_PQ_result_spec_end
      85              :     };
      86              : 
      87            4 :     if (GNUNET_OK !=
      88            4 :         GNUNET_PQ_extract_result (result,
      89              :                                   rs,
      90              :                                   i))
      91              :     {
      92            0 :       GNUNET_break (0);
      93            0 :       ctx->failure = true;
      94            0 :       return;
      95              :     }
      96            4 :     ctx->cb (ctx->cb_cls,
      97              :              instance,
      98              :              payto_uri,
      99              :              facade_url,
     100              :              credential,
     101              :              last_serial);
     102            4 :     GNUNET_PQ_cleanup_result (rs);
     103              :   }
     104              : }
     105              : 
     106              : 
     107              : enum GNUNET_DB_QueryStatus
     108            4 : TALER_MERCHANTDB_iterate_wirewatch_accounts (
     109              :   struct TALER_MERCHANTDB_PostgresContext *pg,
     110              :   TALER_MERCHANTDB_WirewatchWorkCallback cb,
     111              :   void *cb_cls)
     112              : {
     113            4 :   struct Context ctx = {
     114              :     .cb = cb,
     115              :     .cb_cls = cb_cls
     116              :   };
     117            4 :   struct GNUNET_PQ_QueryParam params[] = {
     118              :     GNUNET_PQ_query_param_end
     119              :   };
     120              :   enum GNUNET_DB_QueryStatus qs;
     121              : 
     122            4 :   PREPARE (pg,
     123              :            "iterate_wirewatch_accounts",
     124              :            "SELECT"
     125              :            "  out_last_bank_serial"
     126              :            " ,out_merchant_id"
     127              :            " ,out_payto_uri"
     128              :            " ,out_credit_facade_url"
     129              :            " ,out_credit_facade_credentials::TEXT"
     130              :            " FROM merchant.select_wirewatch_accounts()");
     131            4 :   qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
     132              :                                              "iterate_wirewatch_accounts",
     133              :                                              params,
     134              :                                              &handle_results,
     135              :                                              &ctx);
     136            4 :   if (ctx.failure)
     137            0 :     return GNUNET_DB_STATUS_HARD_ERROR;
     138            4 :   return qs;
     139              : }