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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_aml_history.c
* @brief Implementation of the lookup_aml_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_aml_history.h"
#include "pg_helper.h"
/**
* Closure for callbacks called from #TEH_PG_lookup_aml_history()
*/
struct AmlHistoryContext
{
/**
* Function to call on each result.
*/
TALER_EXCHANGEDB_AmlHistoryCallback 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 AmlHistoryContext`
* @param result the postgres result
* @param num_results the number of results in @a result
*/
static void
handle_aml_entry (void *cls,
PGresult *result,
unsigned int num_results)
{
struct AmlHistoryContext *ahc = cls;
for (unsigned int i = 0; i < num_results; i++)
{
struct GNUNET_TIME_Timestamp decision_time;
char *justification;
struct TALER_AmlOfficerPublicKeyP decider_pub;
json_t *jproperties;
json_t *jnew_rules = NULL;
bool to_investigate;
bool is_active;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_timestamp ("decision_time",
&decision_time),
GNUNET_PQ_result_spec_string ("justification",
&justification),
GNUNET_PQ_result_spec_auto_from_type ("decider_pub",
&decider_pub),
GNUNET_PQ_result_spec_allow_null (
TALER_PQ_result_spec_json ("jproperties",
&jproperties),
NULL),
TALER_PQ_result_spec_json ("jnew_rules",
&jnew_rules),
GNUNET_PQ_result_spec_bool ("to_investigate",
&to_investigate),
GNUNET_PQ_result_spec_bool ("is_active",
&is_active),
GNUNET_PQ_result_spec_end
};
if (GNUNET_OK !=
GNUNET_PQ_extract_result (result,
rs,
i))
{
GNUNET_break (0);
ahc->failed = true;
return;
}
ahc->cb (ahc->cb_cls,
decision_time,
justification,
&decider_pub,
jproperties,
jnew_rules,
to_investigate,
is_active);
GNUNET_PQ_cleanup_result (rs);
}
}
enum GNUNET_DB_QueryStatus
TEH_PG_lookup_aml_history (
void *cls,
const struct TALER_NormalizedPaytoHashP *h_payto,
TALER_EXCHANGEDB_AmlHistoryCallback cb,
void *cb_cls)
{
struct PostgresClosure *pg = cls;
struct AmlHistoryContext ahc = {
.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_aml_history",
"SELECT"
" lo.decision_time"
",ah.justification"
",ah.decider_pub"
",lo.jproperties"
",lo.jnew_rules"
",lo.to_investigate"
",lo.is_active"
" FROM aml_history ah"
" JOIN legitimization_outcomes lo"
" USING (outcome_serial_id)"
" WHERE ah.h_payto=$1"
" ORDER BY decision_time DESC, outcome_serial_id DESC;");
qs = GNUNET_PQ_eval_prepared_multi_select (
pg->conn,
"lookup_aml_history",
params,
&handle_aml_entry,
&ahc);
if (qs <= 0)
return qs;
if (ahc.failed)
{
GNUNET_break (0);
return GNUNET_DB_STATUS_HARD_ERROR;
}
return qs;
}
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