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- /*
- This file is part of GNUnet
- Copyright (C) 2017 GNUnet e.V.
- GNUnet is free software: you can redistribute it and/or modify it
- under the terms of the GNU Affero General Public License as published
- by the Free Software Foundation, either version 3 of the License,
- or (at your option) any later version.
- GNUnet 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
- Affero General Public License for more details.
-
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- SPDX-License-Identifier: AGPL3.0-or-later
- */
- /**
- * @file pq/pq_prepare.c
- * @brief functions to connect to libpq (PostGres)
- * @author Christian Grothoff
- */
- #include "platform.h"
- #include "gnunet_util_lib.h"
- #include "gnunet_pq_lib.h"
- /**
- * Create a `struct GNUNET_PQ_PreparedStatement`.
- *
- * @param name name of the statement
- * @param sql actual SQL statement
- * @param num_args number of arguments in the statement
- * @return initialized struct
- */
- struct GNUNET_PQ_PreparedStatement
- GNUNET_PQ_make_prepare (const char *name,
- const char *sql,
- unsigned int num_args)
- {
- struct GNUNET_PQ_PreparedStatement ps = {
- .name = name,
- .sql = sql,
- .num_arguments = num_args
- };
- return ps;
- }
- /**
- * Request creation of prepared statements @a ps from Postgres.
- *
- * @param connection connection to prepare the statements for
- * @param ps #GNUNET_PQ_PREPARED_STATEMENT_END-terminated array of prepared
- * statements.
- * @return #GNUNET_OK on success,
- * #GNUNET_SYSERR on error
- */
- int
- GNUNET_PQ_prepare_statements (PGconn *connection,
- const struct GNUNET_PQ_PreparedStatement *ps)
- {
- for (unsigned int i=0;NULL != ps[i].name;i++)
- {
- PGresult *ret;
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
- "pq",
- "Preparing SQL statement `%s' as `%s'\n",
- ps[i].sql,
- ps[i].name);
- ret = PQprepare (connection,
- ps[i].name,
- ps[i].sql,
- ps[i].num_arguments,
- NULL);
- if (PGRES_COMMAND_OK != PQresultStatus (ret))
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
- "pq",
- _("PQprepare (`%s' as `%s') failed with error: %s\n"),
- ps[i].sql,
- ps[i].name,
- PQerrorMessage (connection));
- PQclear (ret);
- return GNUNET_SYSERR;
- }
- PQclear (ret);
- }
- return GNUNET_OK;
- }
- /* end of pq/pq_prepare.c */
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