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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_select_aml_decisions.c
* @brief Implementation of the select_aml_decisions 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_select_aml_decisions.h"
#include "pg_helper.h"
/**
* Closure for #handle_aml_result.
*/
struct AmlProcessResultContext
{
/**
* Function to call on each result.
*/
TALER_EXCHANGEDB_AmlDecisionCallback cb;
/**
* Closure for @e cb.
*/
void *cb_cls;
/**
* Plugin context.
*/
struct PostgresClosure *pg;
/**
* Set to #GNUNET_SYSERR on serious errors.
*/
enum GNUNET_GenericReturnValue status;
};
/**
* Function to be called with the results of a SELECT statement
* that has returned @a num_results results. Helper function
* for #TEH_PG_select_aml_process().
*
* @param cls closure of type `struct AmlProcessResultContext *`
* @param result the postgres result
* @param num_results the number of results in @a result
*/
static void
handle_aml_result (void *cls,
PGresult *result,
unsigned int num_results)
{
struct AmlProcessResultContext *ctx = cls;
for (unsigned int i = 0; i<num_results; i++)
{
struct TALER_PaytoHashP h_payto;
uint64_t rowid;
char *justification = NULL;
struct GNUNET_TIME_Timestamp decision_time;
struct GNUNET_TIME_Absolute expiration_time;
json_t *jproperties = NULL;
bool to_investigate;
bool is_active;
json_t *account_rules;
struct GNUNET_PQ_ResultSpec rs[] = {
GNUNET_PQ_result_spec_uint64 ("outcome_serial_id",
&rowid),
GNUNET_PQ_result_spec_auto_from_type ("h_payto",
&h_payto),
GNUNET_PQ_result_spec_allow_null (
GNUNET_PQ_result_spec_string ("justification",
&justification),
NULL),
GNUNET_PQ_result_spec_timestamp ("decision_time",
&decision_time),
GNUNET_PQ_result_spec_absolute_time ("expiration_time",
&expiration_time),
GNUNET_PQ_result_spec_allow_null (
TALER_PQ_result_spec_json ("jproperties",
&jproperties),
NULL),
TALER_PQ_result_spec_json ("jnew_rules",
&account_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);
ctx->status = GNUNET_SYSERR;
return;
}
if (GNUNET_TIME_absolute_is_past (expiration_time))
is_active = false;
ctx->cb (ctx->cb_cls,
rowid,
justification,
&h_payto,
decision_time,
expiration_time,
jproperties,
to_investigate,
is_active,
account_rules);
GNUNET_PQ_cleanup_result (rs);
}
}
enum GNUNET_DB_QueryStatus
TEH_PG_select_aml_decisions (
void *cls,
const struct TALER_PaytoHashP *h_payto,
enum TALER_EXCHANGE_YesNoAll investigation_only,
enum TALER_EXCHANGE_YesNoAll active_only,
uint64_t offset,
int64_t limit,
TALER_EXCHANGEDB_AmlDecisionCallback cb,
void *cb_cls)
{
struct PostgresClosure *pg = cls;
uint64_t ulimit = (limit > 0) ? limit : -limit;
struct GNUNET_PQ_QueryParam params[] = {
GNUNET_PQ_query_param_bool (NULL == h_payto),
NULL == h_payto
? GNUNET_PQ_query_param_null ()
: GNUNET_PQ_query_param_auto_from_type (h_payto),
GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_ALL ==
investigation_only)),
GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_YES ==
investigation_only)),
GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_ALL ==
active_only)),
GNUNET_PQ_query_param_bool ((TALER_EXCHANGE_YNA_YES ==
active_only)),
GNUNET_PQ_query_param_uint64 (&offset),
GNUNET_PQ_query_param_uint64 (&ulimit),
GNUNET_PQ_query_param_end
};
struct AmlProcessResultContext ctx = {
.cb = cb,
.cb_cls = cb_cls,
.pg = pg,
.status = GNUNET_OK
};
enum GNUNET_DB_QueryStatus qs;
const char *stmt = (limit > 0)
? "select_aml_decisions_inc"
: "select_aml_decisions_dec";
PREPARE (pg,
"select_aml_decisions_inc",
"SELECT"
" lo.outcome_serial_id"
",lo.h_payto"
",ah.justification"
",lo.decision_time"
",lo.expiration_time"
",lo.jproperties"
",lo.to_investigate"
",lo.is_active"
",lo.jnew_rules"
" FROM legitimization_outcomes lo"
" LEFT JOIN aml_history ah"
" USING (outcome_serial_id)"
" WHERE (outcome_serial_id > $7)"
" AND ($1 OR (lo.h_payto = $2))"
" AND ($3 OR (lo.to_investigate = $4))"
" AND ($5 OR (lo.is_active = $6))"
" ORDER BY lo.outcome_serial_id ASC"
" LIMIT $8");
PREPARE (pg,
"select_aml_decisions_dec",
"SELECT"
" lo.outcome_serial_id"
",lo.h_payto"
",ah.justification"
",lo.decision_time"
",lo.expiration_time"
",lo.jproperties"
",lo.to_investigate"
",lo.is_active"
",lo.jnew_rules"
" FROM legitimization_outcomes lo"
" LEFT JOIN aml_history ah"
" USING (outcome_serial_id)"
" WHERE lo.outcome_serial_id < $7"
" AND ($1 OR (lo.h_payto = $2))"
" AND ($3 OR (lo.to_investigate = $4))"
" AND ($5 OR (lo.is_active = $6))"
" ORDER BY lo.outcome_serial_id DESC"
" LIMIT $8");
qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
stmt,
params,
&handle_aml_result,
&ctx);
if (GNUNET_OK != ctx.status)
return GNUNET_DB_STATUS_HARD_ERROR;
return qs;
}
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