1 files changed, 96 insertions, 0 deletions
diff --git a/src/backenddb/pg_lookup_order.c b/src/backenddb/pg_lookup_order.c
new file mode 100644
index 00000000..6df7456c
--- /dev/null
+++ b/src/backenddb/pg_lookup_order.c
@@ -0,0 +1,96 @@
+/*
+   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_order.c
+ * @brief Implementation of the lookup_order function for Postgres
+ * @author Iván Ávalos
+ */
+#include "platform.h"
+#include <taler/taler_error_codes.h>
+#include <taler/taler_dbevents.h>
+#include <taler/taler_pq_lib.h>
+#include "pg_lookup_order.h"
+#include "pg_helper.h"
+
+enum GNUNET_DB_QueryStatus
+TMH_PG_lookup_order (void *cls,
+                     const char *instance_id,
+                     const char *order_id,
+                     struct TALER_ClaimTokenP *claim_token,
+                     struct TALER_MerchantPostDataHashP *h_post_data,
+                     json_t **contract_terms)
+{
+  struct PostgresClosure *pg = cls;
+  json_t *j;
+  struct TALER_ClaimTokenP ct;
+  enum GNUNET_DB_QueryStatus qs;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_string (instance_id),
+    GNUNET_PQ_query_param_string (order_id),
+    GNUNET_PQ_query_param_end
+  };
+  struct GNUNET_PQ_ResultSpec rs[] = {
+    TALER_PQ_result_spec_json ("contract_terms",
+                               &j),
+    GNUNET_PQ_result_spec_auto_from_type ("claim_token",
+                                          &ct),
+    GNUNET_PQ_result_spec_auto_from_type ("h_post_data",
+                                          h_post_data),
+    GNUNET_PQ_result_spec_end
+  };
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Finding contract term, order_id: '%s', instance_id: '%s'.\n",
+              order_id,
+              instance_id);
+  check_connection (pg);
+  PREPARE (pg,
+           "lookup_order",
+           "SELECT"
+           " contract_terms"
+           ",claim_token"
+           ",h_post_data"
+           ",pos_key"
+           " FROM merchant_orders"
+           " WHERE merchant_orders.merchant_serial="
+           "     (SELECT merchant_serial "
+           "        FROM merchant_instances"
+           "        WHERE merchant_id=$1)"
+           "   AND merchant_orders.order_id=$2");
+  qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                 "lookup_order",
+                                                 params,
+                                                 rs);
+  if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs)
+  {
+    if (NULL != contract_terms)
+      *contract_terms = j;
+    else
+      json_decref (j);
+    if (NULL != claim_token)
+      *claim_token = ct;
+  }
+  else
+  {
+    /* just to be safe: NULL it */
+    if (NULL != contract_terms)
+      *contract_terms = NULL;
+    if (NULL != claim_token)
+      *claim_token = (struct TALER_ClaimTokenP) { 0 }
+    ;
+  }
+  return qs;
+}