Line data    Source code

       1              : /*
       2              :   This file is part of TALER
       3              :   Copyright (C) 2015, 2016 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 auditordb/auditordb_plugin.c
      18              :  * @brief Logic to load database plugin
      19              :  * @author Christian Grothoff
      20              :  * @author Sree Harsha Totakura <sreeharsha@totakura.in>
      21              :  */
      22              : #include "taler/platform.h"
      23              : #include "taler/taler_auditordb_plugin.h"
      24              : #include <ltdl.h>
      25              : 
      26              : 
      27              : struct TALER_AUDITORDB_Plugin *
      28           32 : TALER_AUDITORDB_plugin_load (const struct GNUNET_CONFIGURATION_Handle *cfg,
      29              :                              bool skip_preflight)
      30              : {
      31              :   char *plugin_name;
      32              :   char *lib_name;
      33              :   struct TALER_AUDITORDB_Plugin *plugin;
      34              : 
      35           32 :   if (GNUNET_SYSERR ==
      36           32 :       GNUNET_CONFIGURATION_get_value_string (cfg,
      37              :                                              "auditor",
      38              :                                              "db",
      39              :                                              &plugin_name))
      40              :   {
      41            0 :     GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
      42              :                                "auditor",
      43              :                                "db");
      44            0 :     return NULL;
      45              :   }
      46           32 :   (void) GNUNET_asprintf (&lib_name,
      47              :                           "libtaler_plugin_auditordb_%s",
      48              :                           plugin_name);
      49           32 :   GNUNET_free (plugin_name);
      50           32 :   plugin = GNUNET_PLUGIN_load (TALER_AUDITOR_project_data (),
      51              :                                lib_name,
      52              :                                (void *) cfg);
      53           32 :   if (NULL == plugin)
      54              :   {
      55            0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
      56              :                 "Failed to load `%s'\n",
      57              :                 lib_name);
      58            0 :     GNUNET_free (lib_name);
      59            0 :     return NULL;
      60              :   }
      61           32 :   plugin->library_name = lib_name;
      62           57 :   if ( (! skip_preflight) &&
      63              :        (GNUNET_OK !=
      64           25 :         plugin->preflight (plugin->cls)) )
      65              :   {
      66            0 :     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
      67              :                 "Database not ready. Try running taler-auditor-dbinit!\n");
      68            0 :     TALER_AUDITORDB_plugin_unload (plugin);
      69            0 :     return NULL;
      70              :   }
      71           32 :   return plugin;
      72              : }
      73              : 
      74              : 
      75              : void
      76           32 : TALER_AUDITORDB_plugin_unload (struct TALER_AUDITORDB_Plugin *plugin)
      77              : {
      78              :   char *lib_name;
      79              : 
      80           32 :   if (NULL == plugin)
      81            0 :     return;
      82           32 :   lib_name = plugin->library_name;
      83           32 :   GNUNET_assert (NULL == GNUNET_PLUGIN_unload (lib_name,
      84              :                                                plugin));
      85           32 :   GNUNET_free (lib_name);
      86              : }
      87              : 
      88              : 
      89              : /* end of auditordb_plugin.c */