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-rw-r--r--src/exchangedb/pg_insert_contract.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/src/exchangedb/pg_insert_contract.c b/src/exchangedb/pg_insert_contract.c
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+++ b/src/exchangedb/pg_insert_contract.c
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+/*
+ 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_insert_contract.c
+ * @brief Implementation of the insert_contract 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_insert_contract.h"
+#include "pg_select_contract_by_purse.h"
+#include "pg_helper.h"
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_insert_contract (
+ void *cls,
+ const struct TALER_PurseContractPublicKeyP *purse_pub,
+ const struct TALER_EncryptedContract *econtract,
+ bool *in_conflict)
+{
+ struct PostgresClosure *pg = cls;
+ enum GNUNET_DB_QueryStatus qs;
+ struct GNUNET_PQ_QueryParam params[] = {
+ GNUNET_PQ_query_param_auto_from_type (purse_pub),
+ GNUNET_PQ_query_param_auto_from_type (&econtract->contract_pub),
+ GNUNET_PQ_query_param_fixed_size (econtract->econtract,
+ econtract->econtract_size),
+ GNUNET_PQ_query_param_auto_from_type (&econtract->econtract_sig),
+ GNUNET_PQ_query_param_end
+ };
+
+ *in_conflict = false;
+ /* Used in #postgres_insert_contract() */
+ PREPARE (pg,
+ "insert_contract",
+ "INSERT INTO contracts"
+ " (purse_pub"
+ " ,pub_ckey"
+ " ,e_contract"
+ " ,contract_sig"
+ " ,purse_expiration"
+ " ) SELECT "
+ " $1, $2, $3, $4, purse_expiration"
+ " FROM purse_requests"
+ " WHERE purse_pub=$1"
+ " ON CONFLICT DO NOTHING;");
+ qs = GNUNET_PQ_eval_prepared_non_select (pg->conn,
+ "insert_contract",
+ params);
+ if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS != qs)
+ return qs;
+ {
+ struct TALER_EncryptedContract econtract2;
+
+ qs = TEH_PG_select_contract_by_purse (pg,
+ purse_pub,
+ &econtract2);
+ if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != qs)
+ {
+ GNUNET_break (0);
+ return GNUNET_DB_STATUS_HARD_ERROR;
+ }
+ if ( (0 == GNUNET_memcmp (&econtract->contract_pub,
+ &econtract2.contract_pub)) &&
+ (econtract2.econtract_size ==
+ econtract->econtract_size) &&
+ (0 == memcmp (econtract2.econtract,
+ econtract->econtract,
+ econtract->econtract_size)) )
+ {
+ GNUNET_free (econtract2.econtract);
+ return GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
+ }
+ GNUNET_free (econtract2.econtract);
+ *in_conflict = true;
+ return GNUNET_DB_STATUS_SUCCESS_ONE_RESULT;
+ }
+}