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/*
This file is part of TALER
Copyright (C) 2024 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_lookup_kyc_history.c
* @brief Implementation of the lookup_kyc_history 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_lookup_kyc_history.h"
#include "pg_helper.h"
/**
* Closure for callbacks called from #TEH_PG_lookup_kyc_history()
*/
struct KycHistoryContext
{
/**
* Function to call on each result.
*/
TALER_EXCHANGEDB_KycHistoryCallback cb;
/**
* Closure for @e cb.
*/
void *cb_cls;
/**
* Plugin context.
*/
struct PostgresClosure *pg;
/**
* Set to 'true' if the transaction failed.
*/
bool failed;
};
/**
* Function to be called with the results of a SELECT statement
* that has returned @a num_results results.
*
* @param cls closure of type `struct KycHistoryContext`
* @param result the postgres result
* @param num_results the number of results in @a result
*/
static void
handle_kyc_entry (void *cls,
PGresult *result,
unsigned int num_results)
{
struct KycHistoryContext *khc = cls;
for (unsigned int i = 0; i < num_results; i++)
{
char *provider_name = NULL;
bool finished;
uint32_t error_code;
char *error_message = NULL;
char *provider_user_id = NULL;
char *provider_legitimization_id = NULL;
struct GNUNET_TIME_Timestamp collection_time;
struct GNUNET_TIME_Absolute expiration_time
= GNUNET_TIME_UNIT_ZERO_ABS;
void *encrypted_attributes;
size_t encrypted_attributes_len;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_string ("provider_name",
&provider_name),
NULL),
GNUNET_PQ_result_spec_bool ("finished",
&finished),
GNUNET_PQ_result_spec_uint32 ("error_code",
&error_code),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_string ("error_message",
&error_message),
NULL),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_string ("provider_user_id",
&provider_user_id),
NULL),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_string ("provider_legitimization_id",
&provider_legitimization_id),
NULL),
GNUNET_PQ_result_spec_timestamp ("collection_time",
&collection_time),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_absolute_time ("expiration_time",
&expiration_time),
NULL),
GNUNET_PQ_result_spec_variable_size ("encrypted_attributes",
&encrypted_attributes,
&encrypted_attributes_len),
GNUNET_PQ_result_spec_end
};
if (GNUNET_OK !=
GNUNET_PQ_extract_result (result,
rs,
i))
{
GNUNET_break (0);
khc->failed = true;
return;
}
khc->cb (khc->cb_cls,
provider_name,
finished,
(enum TALER_ErrorCode) error_code,
error_message,
provider_user_id,
provider_legitimization_id,
collection_time,
expiration_time,
encrypted_attributes_len,
encrypted_attributes);
GNUNET_PQ_cleanup_result (rs);
}
}
enum GNUNET_DB_QueryStatus
TEH_PG_lookup_kyc_history (
void *cls,
const struct TALER_NormalizedPaytoHashP *h_payto,
TALER_EXCHANGEDB_KycHistoryCallback cb,
void *cb_cls)
{
struct PostgresClosure *pg = cls;
struct KycHistoryContext khc = {
.pg = pg,
.cb = cb,
.cb_cls = cb_cls
};
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_auto_from_type (h_payto),
GNUNET_PQ_query_param_end
};
enum GNUNET_DB_QueryStatus qs;
PREPARE (pg,
"lookup_kyc_history",
"SELECT"
" lp.provider_name"
",lp.finished"
",lp.error_code"
",lp.error_message"
",lp.provider_user_id"
",lp.provider_legitimization_id"
",ka.collection_time"
",ka.expiration_time"
",ka.encrypted_attributes"
" FROM kyc_attributes ka"
" JOIN legitimization_processes lp"
" ON (ka.legitimization_serial = lp.legitimization_process_serial_id)"
" WHERE ka.h_payto=$1"
" ORDER BY ka.collection_time DESC;");
qs = GNUNET_PQ_eval_prepared_multi_select (
pg->conn,
"lookup_kyc_history",
params,
&handle_kyc_entry,
&khc);
if (qs <= 0)
return qs;
if (khc.failed)
{
GNUNET_break (0);
return GNUNET_DB_STATUS_HARD_ERROR;
}
return qs;
}
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