exchange

Base system with REST service to issue digital coins, run by the payment service provider
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lookup_rules_by_access_token.c (2119B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2024 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/lookup_rules_by_access_token.c
     18  * @brief Implementation of the lookup_rules_by_access_token function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "taler/taler_pq_lib.h"
     22 #include "exchange-database/lookup_rules_by_access_token.h"
     23 #include "helper.h"
     24 
     25 
     26 enum GNUNET_DB_QueryStatus
     27 TALER_EXCHANGEDB_lookup_rules_by_access_token (
     28   struct TALER_EXCHANGEDB_PostgresContext *pg,
     29   const struct TALER_NormalizedPaytoHashP *h_payto,
     30   json_t **jnew_rules,
     31   uint64_t *rowid)
     32 {
     33   struct GNUNET_PQ_QueryParam params[] = {
     34     GNUNET_PQ_query_param_auto_from_type (h_payto),
     35     GNUNET_PQ_query_param_end
     36   };
     37   struct GNUNET_PQ_ResultSpec rs[] = {
     38     GNUNET_PQ_result_spec_allow_null (
     39       TALER_PQ_result_spec_json (
     40         "jnew_rules",
     41         jnew_rules),
     42       NULL),
     43     GNUNET_PQ_result_spec_uint64 (
     44       "row_id",
     45       rowid),
     46     GNUNET_PQ_result_spec_end
     47   };
     48 
     49   *jnew_rules = NULL;
     50   PREPARE (pg,
     51            "lookup_rules_by_access_token",
     52            "SELECT"
     53            " jnew_rules::TEXT"
     54            ",outcome_serial_id AS row_id"
     55            " FROM legitimization_outcomes"
     56            " WHERE h_payto=$1"
     57            "   AND is_active"
     58            " ORDER BY expiration_time DESC,"
     59            "          outcome_serial_id DESC"
     60            " LIMIT 1;");
     61   return GNUNET_PQ_eval_prepared_singleton_select (
     62     pg->conn,
     63     "lookup_rules_by_access_token",
     64     params,
     65     rs);
     66 }