exchange

Base system with REST service to issue digital coins, run by the payment service provider
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pg_lookup_rules_by_access_token.c (2201B)

      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/pg_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/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_lookup_rules_by_access_token.h"
     26 #include "pg_helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TEH_PG_lookup_rules_by_access_token (
     31   void *cls,
     32   const struct TALER_NormalizedPaytoHashP *h_payto,
     33   json_t **jnew_rules,
     34   uint64_t *rowid)
     35 {
     36   struct PostgresClosure *pg = cls;
     37   struct GNUNET_PQ_QueryParam params[] = {
     38     GNUNET_PQ_query_param_auto_from_type (h_payto),
     39     GNUNET_PQ_query_param_end
     40   };
     41   struct GNUNET_PQ_ResultSpec rs[] = {
     42     GNUNET_PQ_result_spec_allow_null (
     43       TALER_PQ_result_spec_json (
     44         "jnew_rules",
     45         jnew_rules),
     46       NULL),
     47     GNUNET_PQ_result_spec_uint64 (
     48       "row_id",
     49       rowid),
     50     GNUNET_PQ_result_spec_end
     51   };
     52 
     53   *jnew_rules = NULL;
     54   PREPARE (pg,
     55            "lookup_rules_by_access_token",
     56            "SELECT"
     57            " jnew_rules::TEXT"
     58            ",outcome_serial_id AS row_id"
     59            " FROM legitimization_outcomes"
     60            " WHERE h_payto=$1"
     61            "   AND is_active"
     62            " ORDER BY expiration_time DESC,"
     63            "          outcome_serial_id DESC"
     64            " LIMIT 1;");
     65   return GNUNET_PQ_eval_prepared_singleton_select (
     66     pg->conn,
     67     "lookup_rules_by_access_token",
     68     params,
     69     rs);
     70 }