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/*
This file is part of TALER
Copyright (C) 2023 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU Affero 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file taler-exchange-httpd_aml-decision.c
* @brief Handle request about an AML decision.
* @author Christian Grothoff
*/
#include "platform.h"
#include <gnunet/gnunet_util_lib.h>
#include <gnunet/gnunet_json_lib.h>
#include <jansson.h>
#include <microhttpd.h>
#include <pthread.h>
#include "taler_json_lib.h"
#include "taler_mhd_lib.h"
#include "taler_signatures.h"
#include "taler-exchange-httpd_responses.h"
/**
* How often do we try the DB operation at most?
*/
#define MAX_RETRIES 10
MHD_RESULT
TEH_handler_post_aml_decision (
struct TEH_RequestContext *rc,
const struct TALER_AmlOfficerPublicKeyP *officer_pub,
const json_t *root)
{
struct MHD_Connection *connection = rc->connection;
const char *justification;
struct GNUNET_TIME_Timestamp decision_time;
struct TALER_Amount new_threshold;
struct TALER_PaytoHashP h_payto;
uint32_t new_state32;
enum TALER_AmlDecisionState new_state;
struct TALER_AmlOfficerSignatureP officer_sig;
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_fixed_auto ("officer_sig",
&officer_sig),
GNUNET_JSON_spec_fixed_auto ("h_payto",
&h_payto),
TALER_JSON_spec_amount ("new_threshold",
TEH_currency,
&new_threshold),
GNUNET_JSON_spec_string ("justification",
&justification),
GNUNET_JSON_spec_timestamp ("decision_time",
&decision_time),
GNUNET_JSON_spec_uint32 ("new_state",
&new_state32),
GNUNET_JSON_spec_end ()
};
{
enum GNUNET_GenericReturnValue res;
res = TALER_MHD_parse_json_data (connection,
root,
spec);
if (GNUNET_SYSERR == res)
return MHD_NO; /* hard failure */
if (GNUNET_NO == res)
{
GNUNET_break_op (0);
return MHD_YES; /* failure */
}
}
new_state = (enum TALER_AmlDecisionState) new_state32;
TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_EDDSA]++;
if (GNUNET_OK !=
TALER_officer_aml_decision_verify (justification,
decision_time,
&new_threshold,
&h_payto,
new_state,
officer_pub,
&officer_sig))
{
GNUNET_break_op (0);
return TALER_MHD_reply_with_error (
connection,
MHD_HTTP_FORBIDDEN,
TALER_EC_EXCHANGE_AML_DECISION_ADD_SIGNATURE_INVALID,
NULL);
}
{
enum GNUNET_DB_QueryStatus qs;
struct GNUNET_TIME_Timestamp last_date;
bool invalid_officer;
unsigned int retries_left = MAX_RETRIES;
do {
qs = TEH_plugin->insert_aml_decision (TEH_plugin->cls,
&h_payto,
&new_threshold,
new_state,
decision_time,
justification,
officer_pub,
&officer_sig,
&invalid_officer,
&last_date);
if (0 == --retries_left)
break;
} while (GNUNET_DB_STATUS_SOFT_ERROR == qs);
if (qs <= 0)
{
GNUNET_break (0);
return TALER_MHD_reply_with_error (connection,
MHD_HTTP_INTERNAL_SERVER_ERROR,
TALER_EC_GENERIC_DB_STORE_FAILED,
"add aml_decision");
}
if (invalid_officer)
{
GNUNET_break_op (0);
return TALER_MHD_reply_with_error (
connection,
MHD_HTTP_FORBIDDEN,
TALER_EC_EXCHANGE_AML_DECISION_INVALID_OFFICER,
NULL);
}
if (GNUNET_TIME_timestamp_cmp (last_date,
>=,
decision_time))
{
GNUNET_break_op (0);
return TALER_MHD_reply_with_error (
connection,
MHD_HTTP_CONFLICT,
TALER_EC_EXCHANGE_AML_DECISION_MORE_RECENT_PRESENT,
NULL);
}
}
return TALER_MHD_reply_static (
connection,
MHD_HTTP_NO_CONTENT,
NULL,
NULL,
0);
}
/* end of taler-exchange-httpd_aml-decision.c */
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