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 "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_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              : }