[age-withdraw] age-withdraw commit- and reveal-handlers implemented, 12/n

The handlers for the commit- and reveal-phases of the age-withdraw
HTTP-endpoints are implemented, yet not active.

Still missing:

- support for age-withdraw is missing in lib/.
- tests

1 files changed, 55 insertions, 0 deletions

diff --git a/src/exchangedb/pg_do_age_withdraw.h b/src/exchangedb/pg_do_age_withdraw.h
new file mode 100644
index 000000000..5beb3133c
--- /dev/null
+++ b/src/exchangedb/pg_do_age_withdraw.h
@@ -0,0 +1,55 @@
+/*
+   This file is part of TALER
+   Copyright (C) 2023 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_do_age_withdraw.h
+ * @brief implementation of the do_age_withdraw function for Postgres
+ * @author Özgür Kesim
+ */
+#ifndef PG_DO_AGE_WITHDRAW_H
+#define PG_DO_AGE_WITHDRAW_H
+
+#include "taler_util.h"
+#include "taler_json_lib.h"
+#include "taler_exchangedb_plugin.h"
+/**
+ * Perform reserve update as part of an age-withdraw operation, checking for
+ * sufficient balance and fulfillment of age requirements. Finally persisting
+ * the withdrawal details.
+ *
+ * @param cls the `struct PostgresClosure` with the plugin-specific state
+ * @param commitment the commitment with all parameters
+ * @param now current time (rounded)
+ * @param[out] found set to true if the reserve was found
+ * @param[out] balance_ok set to true if the balance was sufficient
+ * @param[out] age_ok set to true if no age requirements are present on the reserve
+ * @param[out] required_age if @e age_ok is false, set to the maximum allowed age when withdrawing from this reserve
+ * @param[out] conflict set to true if there already is an entry in the database for the given pair (h_commitment, reserve_pub)
+ * @param[out] ruuid set to the reserve's UUID (reserves table row)
+ * @return query execution status
+ */
+enum GNUNET_DB_QueryStatus
+TEH_PG_do_age_withdraw (
+  void *cls,
+  const struct TALER_EXCHANGEDB_AgeWithdraw *commitment,
+  const struct GNUNET_TIME_Timestamp now,
+  bool *found,
+  bool *balance_ok,
+  bool *age_ok,
+  uint16_t *required_age,
+  bool *conflict,
+  uint64_t *ruuid);
+
+#endif