1 files changed, 45 insertions, 0 deletions
diff --git a/src/exchangedb/pg_get_old_coin_by_h_blind.h b/src/exchangedb/pg_get_old_coin_by_h_blind.h
new file mode 100644
index 000000000..93ed541b6
--- /dev/null
+++ b/src/exchangedb/pg_get_old_coin_by_h_blind.h
@@ -0,0 +1,45 @@
+/*
+   This file is part of TALER
+   Copyright (C) 2022 Taler Systems SA
+
+   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, see <http://www.gnu.org/licenses/>
+ */
+/**
+ * @file exchangedb/pg_get_old_coin_by_h_blind.h
+ * @brief implementation of the get_old_coin_by_h_blind function for Postgres
+ * @author Christian Grothoff
+ */
+#ifndef PG_GET_OLD_COIN_BY_H_BLIND_H
+#define PG_GET_OLD_COIN_BY_H_BLIND_H
+
+#include "taler_util.h"
+#include "taler_json_lib.h"
+#include "taler_exchangedb_plugin.h"
+
+/**
+ * Obtain information about which old coin a coin was refreshed
+ * given the hash of the blinded (fresh) coin.
+ *
+ * @param cls closure
+ * @param h_blind_ev hash of the blinded coin
+ * @param[out] old_coin_pub set to information about the old coin (on success only)
+ * @param[out] rrc_serial set to serial number of the entry in the database
+ * @return transaction status code
+ */
+enum GNUNET_DB_QueryStatus
+TEH_PG_get_old_coin_by_h_blind (
+  void *cls,
+  const struct TALER_BlindedCoinHashP *h_blind_ev,
+  struct TALER_CoinSpendPublicKeyP *old_coin_pub,
+  uint64_t *rrc_serial);
+
+#endif