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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 pg_iterate_kyc_reference.c
* @brief Low-level (statement-level) Postgres database access for the exchange
* @author Christian Grothoff
*/
#include "platform.h"
#include "taler_error_codes.h"
#include "taler_dbevents.h"
#include "taler_pq_lib.h"
#include "pg_iterate_kyc_reference.h"
#include "pg_helper.h"
/**
* Closure for #iterate_kyc_reference_cb()
*/
struct IteratorContext
{
/**
* Function to call with the results.
*/
TALER_EXCHANGEDB_LegitimizationProcessCallback cb;
/**
* Closure to pass to @e cb
*/
void *cb_cls;
/**
* Plugin context.
*/
struct PostgresClosure *pg;
};
/**
* Helper function for #TEH_PG_iterate_kyc_reference().
* Calls the callback with each denomination key.
*
* @param cls a `struct IteratorContext`
* @param result db results
* @param num_results number of results in @a result
*/
static void
iterate_kyc_reference_cb (void *cls,
PGresult *result,
unsigned int num_results)
{
struct IteratorContext *ic = cls;
for (unsigned int i = 0; i<num_results; i++)
{
char *kyc_provider_name_name;
char *provider_user_id;
char *legitimization_id;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_string ("provider_name",
&kyc_provider_name_name),
GNUNET_PQ_result_spec_string ("provider_user_id",
&provider_user_id),
GNUNET_PQ_result_spec_string ("provider_legitimization_id",
&legitimization_id),
GNUNET_PQ_result_spec_end
};
if (GNUNET_OK !=
GNUNET_PQ_extract_result (result,
rs,
i))
{
GNUNET_break (0);
return;
}
ic->cb (ic->cb_cls,
kyc_provider_name_name,
provider_user_id,
legitimization_id);
GNUNET_PQ_cleanup_result (rs);
}
}
enum GNUNET_DB_QueryStatus
TEH_PG_iterate_kyc_reference (
void *cls,
const struct TALER_PaytoHashP *h_payto,
TALER_EXCHANGEDB_LegitimizationProcessCallback lpc,
void *lpc_cls)
{
struct PostgresClosure *pg = cls;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (h_payto),
GNUNET_PQ_query_param_end
};
struct IteratorContext ic = {
.cb = lpc,
.cb_cls = lpc_cls,
.pg = pg
};
PREPARE (pg,
"iterate_kyc_reference",
"SELECT "
" provider_name"
",provider_user_id"
",provider_legitimization_id"
" FROM legitimization_processes"
" WHERE h_payto=$1;");
return GNUNET_PQ_eval_prepared_multi_select (
pg->conn,
"iterate_kyc_reference",
params,
&iterate_kyc_reference_cb,
&ic);
}
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