1 files changed, 183 insertions, 0 deletions
diff --git a/src/mint/plugin.c b/src/mint/plugin.c
new file mode 100644
index 000000000..91cd3f406
--- /dev/null
+++ b/src/mint/plugin.c
@@ -0,0 +1,183 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2015 Christian Grothoff (and other contributing authors)
+
+  TALER is free software; you can redistribute it and/or modify it under the
+  terms of the GNU General Public License as published by the Free Software
+  Foundation; either version 3, or (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along with
+  TALER; see the file COPYING.  If not, If not, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file mint/plugin.c
+ * @brief Logic to load database plugin
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "plugin.h"
+#include <ltdl.h>
+
+
+/**
+ * Global variable with the plugin (once loaded).
+ */
+struct TALER_MINTDB_Plugin *plugin;
+
+/**
+ * Libtool search path before we started.
+ */
+static char *old_dlsearchpath;
+
+
+/**
+ * Initialize the plugin.
+ *
+ * @param cfg configuration to use
+ * @return #GNUNET_OK on success
+ */
+int
+TALER_MINT_plugin_load (struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+  return GNUNET_SYSERR;
+}
+
+
+/**
+ * Shutdown the plugin.
+ */
+void
+TALER_MINT_plugin_unload ()
+{
+  if (NULL == plugin)
+    return;
+}
+
+
+/**
+ * Setup libtool paths.
+ */
+void __attribute__ ((constructor))
+plugin_init ()
+{
+  int err;
+  const char *opath;
+  char *path;
+  char *cpath;
+
+  err = lt_dlinit ();
+  if (err > 0)
+  {
+    FPRINTF (stderr,
+             _("Initialization of plugin mechanism failed: %s!\n"),
+             lt_dlerror ());
+    return;
+  }
+  opath = lt_dlgetsearchpath ();
+  if (NULL != opath)
+    old_dlsearchpath = GNUNET_strdup (opath);
+  path = TALER_OS_installation_get_path (GNUNET_OS_IPK_LIBDIR);
+  if (NULL != path)
+  {
+    if (NULL != opath)
+    {
+      GNUNET_asprintf (&cpath, "%s:%s", opath, path);
+      lt_dlsetsearchpath (cpath);
+      GNUNET_free (path);
+      GNUNET_free (cpath);
+    }
+    else
+    {
+      lt_dlsetsearchpath (path);
+      GNUNET_free (path);
+    }
+  }
+}
+
+
+/**
+ * Shutdown libtool.
+ */
+void __attribute__ ((destructor))
+plugin_fini ()
+{
+  lt_dlsetsearchpath (old_dlsearchpath);
+  if (NULL != old_dlsearchpath)
+  {
+    GNUNET_free (old_dlsearchpath);
+    old_dlsearchpath = NULL;
+  }
+  lt_dlexit ();
+}
+
+
+// FIXME: decide if we should keep these in each plugin, here
+// or yet again somewhere else entirely (plugin_common.c?)
+
+/**
+ * Free memory associated with the given reserve history.
+ *
+ * @param rh history to free.
+ */
+void
+TALER_MINT_DB_free_reserve_history (struct ReserveHistory *rh)
+{
+  struct BankTransfer *bt;
+  struct CollectableBlindcoin *cbc;
+  struct ReserveHistory *backref;
+
+  while (NULL != rh)
+  {
+    switch(rh->type)
+    {
+    case TALER_MINT_DB_RO_BANK_TO_MINT:
+      bt = rh->details.bank;
+      if (NULL != bt->wire)
+        json_decref ((json_t *) bt->wire); /* FIXME: avoid cast? */
+      GNUNET_free (bt);
+      break;
+    case TALER_MINT_DB_RO_WITHDRAW_COIN:
+      cbc = rh->details.withdraw;
+      GNUNET_CRYPTO_rsa_signature_free (cbc->sig);
+      GNUNET_CRYPTO_rsa_public_key_free (cbc->denom_pub);
+      GNUNET_free (cbc);
+      break;
+    }
+    backref = rh;
+    rh = rh->next;
+    GNUNET_free (backref);
+  }
+}
+
+
+/**
+ * Free memory of the link data list.
+ *
+ * @param ldl link data list to release
+ */
+void
+TALER_db_link_data_list_free (struct LinkDataList *ldl)
+{
+  GNUNET_break (0); // FIXME
+}
+
+
+/**
+ * Free linked list of transactions.
+ *
+ * @param list list to free
+ */
+void
+TALER_MINT_DB_free_coin_transaction_list (struct TALER_MINT_DB_TransactionList *list)
+{
+  // FIXME: check logic!
+  GNUNET_break (0);
+}
+
+
+
+/* end of plugin.c */