donau

Donation authority for GNU Taler (experimental)
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donaudb_plugin.c (2205B)

      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 donaudb/donaudb_plugin.c
     18  * @brief Logic to load database plugin
     19  * @author Johannes Casaburi
     20  */
     21 #include "donau_config.h"
     22 #include "donau_util.h"
     23 #include "donaudb_lib.h"
     24 #include "donaudb_plugin.h"
     25 #include <ltdl.h>
     26 
     27 
     28 struct DONAUDB_Plugin *
     29 DONAUDB_plugin_load (const struct GNUNET_CONFIGURATION_Handle *cfg)
     30 {
     31   char *plugin_name;
     32   char *lib_name;
     33   struct DONAUDB_Plugin *plugin;
     34 
     35   if (GNUNET_SYSERR ==
     36       GNUNET_CONFIGURATION_get_value_string (cfg,
     37                                              "donau",
     38                                              "db",
     39                                              &plugin_name))
     40   {
     41     GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
     42                                "donau",
     43                                "db");
     44     return NULL;
     45   }
     46   GNUNET_asprintf (&lib_name,
     47                    "libdonau_plugin_donaudb_%s",
     48                    plugin_name);
     49   GNUNET_free (plugin_name);
     50   plugin = GNUNET_PLUGIN_load (DONAU_project_data (),
     51                                lib_name,
     52                                (void *) cfg);
     53   if (NULL != plugin)
     54     plugin->library_name = lib_name;
     55   else
     56     GNUNET_free (lib_name);
     57   return plugin;
     58 }
     59 
     60 
     61 void
     62 DONAUDB_plugin_unload (struct DONAUDB_Plugin *plugin)
     63 {
     64   char *lib_name;
     65 
     66   if (NULL == plugin)
     67     return;
     68   lib_name = plugin->library_name;
     69   GNUNET_assert (NULL == GNUNET_PLUGIN_unload (lib_name,
     70                                                plugin));
     71   GNUNET_free (lib_name);
     72 }
     73 
     74 
     75 /* end of donaudb_plugin.c */