1 files changed, 119 insertions, 0 deletions
diff --git a/src/exchangedb/pg_get_age_withdraw.c b/src/exchangedb/pg_get_age_withdraw.c
new file mode 100644
index 000000000..ea4d3b909
--- /dev/null
+++ b/src/exchangedb/pg_get_age_withdraw.c
@@ -0,0 +1,119 @@
+/*
+   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_get_age_withdraw.c
+ * @brief Implementation of the get_age_withdraw function for Postgres
+ * @author Özgür Kesim
+ */
+#include "platform.h"
+#include "taler_error_codes.h"
+#include "taler_dbevents.h"
+#include "taler_pq_lib.h"
+#include "pg_get_age_withdraw.h"
+#include "pg_helper.h"
+
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_get_age_withdraw (
+  void *cls,
+  const struct TALER_ReservePublicKeyP *reserve_pub,
+  const struct TALER_AgeWithdrawCommitmentHashP *ach,
+  struct TALER_EXCHANGEDB_AgeWithdraw *aw)
+{
+  enum GNUNET_DB_QueryStatus ret;
+  struct PostgresClosure *pg = cls;
+  size_t num_sigs;
+  size_t num_hashes;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_auto_from_type (reserve_pub),
+    GNUNET_PQ_query_param_auto_from_type (ach),
+    GNUNET_PQ_query_param_end
+  };
+  struct GNUNET_PQ_ResultSpec rs[] = {
+    GNUNET_PQ_result_spec_auto_from_type ("h_commitment",
+                                          &aw->h_commitment),
+    GNUNET_PQ_result_spec_auto_from_type ("reserve_sig",
+                                          &aw->reserve_sig),
+    GNUNET_PQ_result_spec_auto_from_type ("reserve_pub",
+                                          &aw->reserve_pub),
+    GNUNET_PQ_result_spec_uint16 ("max_age",
+                                  &aw->max_age),
+    TALER_PQ_result_spec_amount ("amount_with_fee",
+                                 pg->currency,
+                                 &aw->amount_with_fee),
+    GNUNET_PQ_result_spec_uint16 ("noreveal_index",
+                                  &aw->noreveal_index),
+    TALER_PQ_result_spec_array_blinded_coin_hash (
+      pg->conn,
+      "h_blind_evs",
+      &aw->num_coins,
+      &aw->h_coin_evs),
+    TALER_PQ_result_spec_array_blinded_denom_sig (
+      pg->conn,
+      "denom_sigs",
+      &num_sigs,
+      &aw->denom_sigs),
+    TALER_PQ_result_spec_array_denom_hash (
+      pg->conn,
+      "denom_pub_hashes",
+      &num_hashes,
+      &aw->denom_pub_hashes),
+    GNUNET_PQ_result_spec_end
+  };
+
+  PREPARE (pg,
+           "get_age_withdraw",
+           "SELECT"
+           " h_commitment"
+           ",reserve_sig"
+           ",reserve_pub"
+           ",max_age"
+           ",amount_with_fee"
+           ",noreveal_index"
+           ",h_blind_evs"
+           ",denom_sigs"
+           ",ARRAY("
+           "  SELECT denominations.denom_pub_hash FROM ("
+           "    SELECT UNNEST(denom_serials) AS id,"
+           "           generate_subscripts(denom_serials, 1) AS nr" /* for order */
+           "  ) AS denoms"
+           "  LEFT JOIN denominations ON denominations.denominations_serial=denoms.id"
+           ") AS denom_pub_hashes"
+           " FROM age_withdraw"
+           " WHERE reserve_pub=$1 and h_commitment=$2;");
+
+  ret = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                  "get_age_withdraw",
+                                                  params,
+                                                  rs);
+  if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != ret)
+    return ret;
+
+  if ((aw->num_coins != num_sigs) ||
+      (aw->num_coins != num_hashes))
+  {
+    GNUNET_break (0);
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "got inconsistent number of entries from DB: "
+                "num_coins=%ld, num_sigs=%ld, num_hashes=%ld\n",
+                aw->num_coins,
+                num_sigs,
+                num_hashes);
+    return GNUNET_DB_STATUS_HARD_ERROR;
+  }
+
+  return ret;
+}