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/*
This file is part of TALER
Copyright (C) 2014-2024 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-auditor-httpd_deposit-confirmation-get.c
* @brief Handle /deposit-confirmation requests; return list of deposit confirmations from merchant
* that were not received from the exchange, by auditor.
* @author Nic Eigel
*/
#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-auditor-httpd.h"
#include "taler-auditor-httpd_deposit-confirmation-get.h"
GNUNET_NETWORK_STRUCT_BEGIN
/**
* @brief Information about a signing key of the exchange. Signing keys are used
* to sign exchange messages other than coins, i.e. to confirm that a
* deposit was successful or that a refresh was accepted.
*/
struct ExchangeSigningKeyDataP
{
/**
* When does this signing key begin to be valid?
*/
struct GNUNET_TIME_TimestampNBO start;
/**
* When does this signing key expire? Note: This is currently when
* the Exchange will definitively stop using it. Signatures made with
* the key remain valid until @e end. When checking validity periods,
* clients should allow for some overlap between keys and tolerate
* the use of either key during the overlap time (due to the
* possibility of clock skew).
*/
struct GNUNET_TIME_TimestampNBO expire;
/**
* When do signatures with this signing key become invalid? After
* this point, these signatures cannot be used in (legal) disputes
* anymore, as the Exchange is then allowed to destroy its side of the
* evidence. @e end is expected to be significantly larger than @e
* expire (by a year or more).
*/
struct GNUNET_TIME_TimestampNBO end;
/**
* The public online signing key that the exchange will use
* between @e start and @e expire.
*/
struct TALER_ExchangePublicKeyP signkey_pub;
};
GNUNET_NETWORK_STRUCT_END
/**
* Add deposit confirmation to the list.
*
* @param[in,out] cls a `json_t *` array to extend
* @param serial_id location of the @a dc in the database
* @param dc struct of deposit confirmation
* @return #GNUNET_OK to continue to iterate, #GNUNET_SYSERR to stop iterating
*/
static enum GNUNET_GenericReturnValue
add_deposit_confirmation (void *cls,
uint64_t serial_id,
const struct TALER_AUDITORDB_DepositConfirmation *dc)
{
json_t *list = cls;
json_t *obj;
obj = GNUNET_JSON_PACK (
GNUNET_JSON_pack_data_auto ("dc",
dc));
GNUNET_break (0 ==
json_array_append_new (list,
obj));
return GNUNET_OK;
}
/**
*
* @param rh context of the handler
* @param connection the MHD connection to handle
* @param[in,out] connection_cls the connection's closure (can be updated)
* @param upload_data upload data
* @param[in,out] upload_data_size number of bytes (left) in @a upload_data
* @return MHD result code
*/
MHD_RESULT
TAH_DEPOSIT_CONFIRMATION_handler_get (struct TAH_RequestHandler *rh,
struct MHD_Connection *connection,
void **connection_cls,
const char *upload_data,
size_t *upload_data_size,
const char *const args[])
{
json_t *ja;
enum GNUNET_DB_QueryStatus qs;
(void) rh;
(void) connection_cls;
(void) upload_data;
(void) upload_data_size;
if (GNUNET_SYSERR ==
TAH_plugin->preflight (TAH_plugin->cls))
{
GNUNET_break (0);
return TALER_MHD_reply_with_error (connection,
MHD_HTTP_INTERNAL_SERVER_ERROR,
TALER_EC_GENERIC_DB_SETUP_FAILED,
NULL);
}
ja = json_array ();
GNUNET_break (NULL != ja);
uint64_t row_id = 0;
struct TALER_AUDITORDB_DepositConfirmation dc = {
.exchange_timestamp = GNUNET_TIME_UNIT_ZERO_TS,
.refund_deadline = GNUNET_TIME_UNIT_ZERO_TS,
.wire_deadline = GNUNET_TIME_UNIT_ZERO_TS
};
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_uint64 ("row_id",
&row_id),
/*
GNUNET_JSON_spec_timestamp("exchange_timestamp",
&dc.exchange_timestamp),
GNUNET_JSON_spec_timestamp("refund_deadline",
&dc.refund_deadline),
GNUNET_JSON_spec_timestamp("wire_deadline",
&dc.wire_deadline),
TALER_JSON_spec_amount("amount_without_fee",
TAH_currency,
&dc.total_without_fee),
*/
GNUNET_JSON_spec_end ()
};
// read the input json
json_t *json_in;
{
enum GNUNET_GenericReturnValue res;
res = TALER_MHD_parse_post_json (connection,
connection_cls,
upload_data,
upload_data_size,
&json_in);
if (GNUNET_SYSERR == res)
return MHD_NO;
if ((GNUNET_NO == res) ||
(NULL == json_in))
return MHD_YES;
res = TALER_MHD_parse_json_data (connection,
json_in,
spec);
if (GNUNET_SYSERR == res)
{
json_decref (json_in);
return MHD_NO; /* hard failure */
}
if (GNUNET_NO == res)
{
json_decref (json_in);
return MHD_YES; /* failure */
}
}
printf ("row_id from json: %lu\n", row_id);
qs = TAH_plugin->get_deposit_confirmations (
TAH_plugin->cls,
row_id,
false, /* FIXME: get from query parameters! */
&add_deposit_confirmation,
ja);
if (0 > qs)
{
GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR == qs);
json_decref (ja);
TALER_LOG_WARNING (
"Failed to handle GET /deposit-confirmation in database\n");
return TALER_MHD_reply_with_error (connection,
MHD_HTTP_INTERNAL_SERVER_ERROR,
TALER_EC_GENERIC_DB_FETCH_FAILED,
"deposit-confirmation");
}
return TALER_MHD_REPLY_JSON_PACK (
connection,
MHD_HTTP_OK,
GNUNET_JSON_pack_array_steal ("deposit-confirmation",
ja));
}
/* end of taler-auditor-httpd_deposit-confirmation-get.c */
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