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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_get_extension_manifest.c
* @brief Implementation of the get_extension_manifest 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_get_extension_manifest.h"
#include "pg_helper.h"
/**
* Function called to get the manifest of an extension
* (age-restriction, policy_extension_...)
*
* @param cls the @e cls of this struct with the plugin-specific state
* @param extension_name the name of the extension
* @param[out] manifest JSON object of the manifest as string
* @return transaction status code
*/
enum GNUNET_DB_QueryStatus
TEH_PG_get_extension_manifest (void *cls,
const char *extension_name,
char **manifest)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_string (extension_name),
GNUNET_PQ_query_param_end
};
bool is_null;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_string ("manifest",
manifest),
&is_null),
GNUNET_PQ_result_spec_end
};
*manifest = NULL;
/* Used in #postgres_get_extension_manifest */
PREPARE (pg,
"get_extension_manifest",
"SELECT "
" manifest "
"FROM extensions"
" WHERE name=$1;");
return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
"get_extension_manifest",
params,
rs);
}
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