1 files changed, 99 insertions, 0 deletions
diff --git a/src/backenddb/pg_lookup_contract_terms3.c b/src/backenddb/pg_lookup_contract_terms3.c
new file mode 100644
index 00000000..ef955a51
--- /dev/null
+++ b/src/backenddb/pg_lookup_contract_terms3.c
@@ -0,0 +1,99 @@
+/*
+   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 backenddb/pg_lookup_contract_terms3.c
+ * @brief Implementation of the lookup_contract_terms3 function for Postgres
+ * @author Iván Ávalos
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <taler/taler_error_codes.h>
+#include <taler/taler_dbevents.h>
+#include <taler/taler_pq_lib.h>
+#include "pg_lookup_contract_terms3.h"
+#include "pg_helper.h"
+
+
+enum GNUNET_DB_QueryStatus
+TMH_PG_lookup_contract_terms3 (
+  void *cls,
+  const char *instance_id,
+  const char *order_id,
+  const char *session_id,
+  json_t **contract_terms,
+  uint64_t *order_serial,
+  bool *paid,
+  bool *wired,
+  bool *session_matches,
+  struct TALER_ClaimTokenP *claim_token)
+{
+  struct PostgresClosure *pg = cls;
+  enum GNUNET_DB_QueryStatus qs;
+  struct TALER_ClaimTokenP ct;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_string (instance_id),
+    GNUNET_PQ_query_param_string (order_id),
+    NULL == session_id
+    ? GNUNET_PQ_query_param_null ()
+    : GNUNET_PQ_query_param_string (session_id),
+    GNUNET_PQ_query_param_end
+  };
+  struct GNUNET_PQ_ResultSpec rs[] = {
+    /* contract_terms must be first! */
+    TALER_PQ_result_spec_json ("contract_terms",
+                               contract_terms),
+    GNUNET_PQ_result_spec_uint64 ("order_serial",
+                                  order_serial),
+    GNUNET_PQ_result_spec_bool ("paid",
+                                paid),
+    GNUNET_PQ_result_spec_bool ("wired",
+                                wired),
+    GNUNET_PQ_result_spec_allow_null (
+      GNUNET_PQ_result_spec_bool ("session_matches",
+                                  session_matches),
+      NULL),
+    GNUNET_PQ_result_spec_auto_from_type ("claim_token",
+                                          &ct),
+    GNUNET_PQ_result_spec_end
+  };
+
+  *session_matches = false;
+  check_connection (pg);
+  PREPARE (pg,
+           "lookup_contract_terms3",
+           "SELECT"
+           " contract_terms"
+           ",order_serial"
+           ",claim_token"
+           ",paid"
+           ",wired"
+           ",(session_id=$3) AS session_matches"
+           " FROM merchant_contract_terms"
+           " WHERE order_id=$2"
+           "   AND merchant_serial="
+           "     (SELECT merchant_serial"
+           "        FROM merchant_instances"
+           "        WHERE merchant_id=$1)");
+  qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                 "lookup_contract_terms3",
+                                                 params,
+                                                 (NULL != contract_terms)
+                                                   ? rs
+                                                   : &rs[1]);
+  if (NULL != claim_token)
+    *claim_token = ct;
+  return qs;
+}