[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, 104 insertions, 0 deletions

diff --git a/src/exchangedb/pg_do_age_withdraw.c b/src/exchangedb/pg_do_age_withdraw.c
new file mode 100644
index 000000000..8a93ef8df
--- /dev/null
+++ b/src/exchangedb/pg_do_age_withdraw.c
@@ -0,0 +1,104 @@
+/*
+   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_batch_withdraw.c
+ * @brief Implementation of the do_batch_withdraw function for Postgres
+ * @author Özgür Kesim
+ */
+#include "platform.h"
+#include "taler_error_codes.h"
+#include "taler_dbevents.h"
+#include "taler_exchangedb_plugin.h"
+#include "taler_pq_lib.h"
+#include "taler_pq_lib.h"
+#include "pg_do_batch_withdraw.h"
+#include "pg_helper.h"
+#include <gnunet/gnunet_time_lib.h>
+
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_do_age_withdraw (
+  void *cls,
+  const struct TALER_EXCHANGEDB_AgeWithdraw *commitment,
+  struct GNUNET_TIME_Timestamp now,
+  bool *found,
+  bool *balance_ok,
+  bool *age_ok,
+  uint16_t *required_age,
+  bool *conflict,
+  uint64_t *ruuid)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_TIME_Timestamp gc;
+  struct GNUNET_PQ_QueryParam params[] = {
+    TALER_PQ_query_param_amount (&commitment->amount_with_fee),
+    GNUNET_PQ_query_param_auto_from_type (&commitment->reserve_pub),
+    GNUNET_PQ_query_param_auto_from_type (&commitment->reserve_sig),
+    GNUNET_PQ_query_param_timestamp (&now),
+    GNUNET_PQ_query_param_timestamp (&gc),
+    GNUNET_PQ_query_param_auto_from_type (&commitment->h_commitment),
+    GNUNET_PQ_query_param_uint16 (&commitment->max_age),
+    GNUNET_PQ_query_param_uint16 (&commitment->noreveal_index),
+    GNUNET_PQ_query_param_array_auto_from_type (commitment->num_coins,
+                                                commitment->h_coin_evs,
+                                                pg->conn),
+    GNUNET_PQ_query_param_array_uint64 (commitment->num_coins,
+                                        commitment->denom_serials,
+                                        pg->conn),
+    GNUNET_PQ_query_param_array_auto_from_type (commitment->num_coins,
+                                                commitment->denom_sigs,
+                                                pg->conn),
+    GNUNET_PQ_query_param_end
+  };
+  struct GNUNET_PQ_ResultSpec rs[] = {
+    GNUNET_PQ_result_spec_bool ("reserve_found",
+                                found),
+    GNUNET_PQ_result_spec_bool ("balance_ok",
+                                balance_ok),
+    GNUNET_PQ_result_spec_bool ("age_ok",
+                                age_ok),
+    GNUNET_PQ_result_spec_uint16 ("required_age",
+                                  required_age),
+    GNUNET_PQ_result_spec_bool ("conflict",
+                                conflict),
+    GNUNET_PQ_result_spec_uint64 ("ruuid",
+                                  ruuid),
+    GNUNET_PQ_result_spec_end
+  };
+
+  gc = GNUNET_TIME_absolute_to_timestamp (
+    GNUNET_TIME_absolute_add (now.abs_time,
+                              pg->legal_reserve_expiration_time));
+
+
+  /* Used in #postgres_do_age_withdraw() to
+        update the reserve balance and check its status */
+  PREPARE (pg,
+           "call_age_withdraw",
+           "SELECT "
+           " reserve_found"
+           ",balance_ok"
+           ",age_ok"
+           ",required_age"
+           ",conflict"
+           ",ruuid"
+           " FROM exchange_do_batch_withdraw"
+           " ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12);");
+  return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                   "call_age_withdraw",
+                                                   params,
+                                                   rs);
+}