From 6991ca011b4f97d24066f82ccd09adde8a692f6a Mon Sep 17 00:00:00 2001
From: Joseph <Joseph.xu@efrei.net>
Date: Mon, 14 Nov 2022 07:35:56 -0500
Subject: remove more functions

---
 src/exchangedb/pg_iterate_auditor_denominations.c | 121 ++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 src/exchangedb/pg_iterate_auditor_denominations.c

(limited to 'src/exchangedb/pg_iterate_auditor_denominations.c')

diff --git a/src/exchangedb/pg_iterate_auditor_denominations.c b/src/exchangedb/pg_iterate_auditor_denominations.c
new file mode 100644
index 000000000..6456ed1d4
--- /dev/null
+++ b/src/exchangedb/pg_iterate_auditor_denominations.c
@@ -0,0 +1,121 @@
+/*
+   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_iterate_auditor_denominations.c
+ * @brief Implementation of the iterate_auditor_denominations function for Postgres
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler_error_codes.h"
+#include "taler_dbevents.h"
+#include "taler_pq_lib.h"
+#include "pg_iterate_auditor_denominations.h"
+#include "pg_helper.h"
+
+/**
+ * Closure for #auditor_denoms_cb_helper()
+ */
+struct AuditorDenomsIteratorContext
+{
+  /**
+   * Function to call with the results.
+   */
+  TALER_EXCHANGEDB_AuditorDenominationsCallback cb;
+
+  /**
+   * Closure to pass to @e cb
+   */
+  void *cb_cls;
+};
+
+
+/**
+ * Helper function for #postgres_iterate_auditor_denominations().
+ * Calls the callback with each auditor and denomination pair.
+ *
+ * @param cls a `struct AuditorDenomsIteratorContext`
+ * @param result db results
+ * @param num_results number of results in @a result
+ */
+static void
+auditor_denoms_cb_helper (void *cls,
+                          PGresult *result,
+                          unsigned int num_results)
+{
+  struct AuditorDenomsIteratorContext *dic = cls;
+
+  for (unsigned int i = 0; i<num_results; i++)
+  {
+    struct TALER_AuditorPublicKeyP auditor_pub;
+    struct TALER_DenominationHashP h_denom_pub;
+    struct TALER_AuditorSignatureP auditor_sig;
+    struct GNUNET_PQ_ResultSpec rs[] = {
+      GNUNET_PQ_result_spec_auto_from_type ("auditor_pub",
+                                            &auditor_pub),
+      GNUNET_PQ_result_spec_auto_from_type ("denom_pub_hash",
+                                            &h_denom_pub),
+      GNUNET_PQ_result_spec_auto_from_type ("auditor_sig",
+                                            &auditor_sig),
+      GNUNET_PQ_result_spec_end
+    };
+
+    if (GNUNET_OK !=
+        GNUNET_PQ_extract_result (result,
+                                  rs,
+                                  i))
+    {
+      GNUNET_break (0);
+      return;
+    }
+    dic->cb (dic->cb_cls,
+             &auditor_pub,
+             &h_denom_pub,
+             &auditor_sig);
+  }
+}
+
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_iterate_auditor_denominations (
+  void *cls,
+  TALER_EXCHANGEDB_AuditorDenominationsCallback cb,
+  void *cb_cls)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_end
+  };
+  struct AuditorDenomsIteratorContext dic = {
+    .cb = cb,
+    .cb_cls = cb_cls,
+  };
+    /* Used in #postgres_iterate_auditor_denominations() */
+  PREPARE (pg,
+           "select_auditor_denoms",
+           "SELECT"
+           " auditors.auditor_pub"
+           ",denominations.denom_pub_hash"
+           ",auditor_denom_sigs.auditor_sig"
+           " FROM auditor_denom_sigs"
+           " JOIN auditors USING (auditor_uuid)"
+           " JOIN denominations USING (denominations_serial)"
+           " WHERE auditors.is_active;");
+    return GNUNET_PQ_eval_prepared_multi_select (pg->conn,
+                                               "select_auditor_denoms",
+                                               params,
+                                               &auditor_denoms_cb_helper,
+                                               &dic);
+}
-- 
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