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_get_extension_manifest.c
      18             :  * @brief Implementation of the get_extension_manifest function for Postgres
      19             :  * @author Christian Grothoff
      20             :  */
      21             : #include "platform.h"
      22             : #include "taler_error_codes.h"
      23             : #include "taler_dbevents.h"
      24             : #include "taler_pq_lib.h"
      25             : #include "pg_get_extension_manifest.h"
      26             : #include "pg_helper.h"
      27             : 
      28             : /**
      29             :  * Function called to get the manifest of an extension
      30             :  * (age-restriction, policy_extension_...)
      31             :  *
      32             :  * @param cls the @e cls of this struct with the plugin-specific state
      33             :  * @param extension_name the name of the extension
      34             :  * @param[out] manifest JSON object of the manifest as string
      35             :  * @return transaction status code
      36             :  */
      37             : enum GNUNET_DB_QueryStatus
      38          11 : TEH_PG_get_extension_manifest (void *cls,
      39             :                                const char *extension_name,
      40             :                                char **manifest)
      41             : {
      42          11 :   struct PostgresClosure *pg = cls;
      43          11 :   struct GNUNET_PQ_QueryParam params[] = {
      44          11 :     GNUNET_PQ_query_param_string (extension_name),
      45             :     GNUNET_PQ_query_param_end
      46             :   };
      47             :   bool is_null;
      48          11 :   struct GNUNET_PQ_ResultSpec rs[] = {
      49          11 :     GNUNET_PQ_result_spec_allow_null (
      50             :       GNUNET_PQ_result_spec_string ("manifest",
      51             :                                     manifest),
      52             :       &is_null),
      53             :     GNUNET_PQ_result_spec_end
      54             :   };
      55             : 
      56          11 :   *manifest = NULL;
      57          11 :   PREPARE (pg,
      58             :            "get_extension_manifest",
      59             :            "SELECT"
      60             :            " manifest"
      61             :            " FROM extensions"
      62             :            " WHERE name=$1;");
      63          11 :   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
      64             :                                                    "get_extension_manifest",
      65             :                                                    params,
      66             :                                                    rs);
      67             : }