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/*
This file is part of TALER
(C) 2014, 2015, 2016 INRIA
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 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, If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file backend/taler-merchant-httpd_track.c
* @brief implement API for tracking deposits and wire transfers
* @author Marcello Stanisci
* @author Christian Grothoff
*/
#include "platform.h"
#include <jansson.h>
#include <taler/taler_signatures.h>
#include <taler/taler_json_lib.h>
#include "taler-merchant-httpd.h"
#include "taler-merchant-httpd_mhd.h"
#include "taler-merchant-httpd_parsing.h"
#include "taler-merchant-httpd_auditors.h"
#include "taler-merchant-httpd_exchanges.h"
#include "taler-merchant-httpd_responses.h"
extern char *TMH_merchant_currency_string;
/**
* Context used for handing /track/deposit requests.
*/
struct DepositTrackContext
{
/**
* This MUST be first!
*/
struct TM_HandlerContext hc;
/**
* Handle to the exchange.
*/
struct TALER_EXCHANGE_Handle *eh;
/**
* Handle for the /wire/deposits request.
*/
struct TALER_EXCHANGE_WireDepositsHandle *wdh;
/**
*
*/
struct TALER_WireDepositDetails *details;
/**
* Argument for the /wire/deposits request.
*/
struct TALER_WireTransferIdentifierRawP wtid;
/**
*
*/
unsigned int details_length;
};
/**
* Function called with detailed wire transfer data, including all
* of the coin transactions that were combined into the wire transfer.
*
* @param cls closure
* @param http_status HTTP status code we got, 0 on exchange protocol violation
* @param json original json reply (may include signatures, those have then been
* validated already)
* @param wtid extracted wire transfer identifier, or NULL if the exchange could
* not provide any (set only if @a http_status is #MHD_HTTP_OK)
* @param total_amount total amount of the wire transfer, or NULL if the exchange could
* not provide any @a wtid (set only if @a http_status is #MHD_HTTP_OK)
* @param details_length length of the @a details array
* @param details array with details about the combined transactions
*/
static void
wire_deposit_cb (void *cls,
unsigned int http_status,
const json_t *json,
const struct GNUNET_HashCode *h_wire,
const struct TALER_Amount *total_amount,
unsigned int details_length,
const struct TALER_WireDepositDetails *details)
{
struct DepositTrackContext *rctx = cls;
unsigned int i;
rctx->wdh = NULL;
if (NULL == total_amount)
{
rctx->error = "failed to obtain /wire/deposit response from exchange";
rctx->json = json_incref (json);
rctx->response_code = http_status;
MHD_connection_resume (rctx->connection);
return;
}
rctx->details_length = details_length;
rctx->details = GNUNET_new_array (struct TALER_WireDepositDetails,
details_length);
memcpy (rctx->details,
details,
details_length * sizeof (struct TALER_WireDepositDetails));
GNUNET_break (0);
/* FIXME: now check that these details match what we have in
our database... */
}
/**
* Function called with information about who is auditing
* a particular exchange and what key the exchange is using.
*
* @param cls closure
* @param keys information about the various keys used
* by the exchange, NULL if /keys failed
*/
static void
cert_cb (void *cls,
const struct TALER_EXCHANGE_Keys *keys)
{
struct DepositTrackContext *rctx = cls;
if (NULL == keys)
{
rctx->error = "failed to obtain /keys from exchange";
rctx->response_code = MHD_HTTP_SERVICE_UNAVAILABLE;
MHD_connection_resume (rctx->connection);
return;
}
rctx->wdh = TALER_EXCHANGE_wire_deposits (rctx->eh,
&rctx->wtid,
&wire_deposit_cb,
rctx);
}
/**
* Manages a /track/wtid call, thus it calls the /track/deposit
* offered by the exchange in order to return the set of deposits
* (of coins) associated with a given wire transfer.
*
* @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
*/
int
MH_handler_track_deposit (struct TMH_RequestHandler *rh,
struct MHD_Connection *connection,
void **connection_cls,
const char *upload_data,
size_t *upload_data_size)
{
struct DepositTrackContext *rctx;
const char *str;
const char *uri;
rctx = *connection_cls;
if (NULL != rctx)
{
if (NULL == rctx->
}
uri = MHD_lookup_connection_value (connection,
MHD_GET_ARGUMENT_KIND,
"exchange");
if (NULL == uri)
return TMH_RESPONSE_reply_external_error (connection,
"exchange argument missing");
str = MHD_lookup_connection_value (connection,
MHD_GET_ARGUMENT_KIND,
"wtid");
if (NULL == str)
return TMH_RESPONSE_reply_external_error (connection,
"wtid argument missing");
if (GNUNET_OK !=
GNUNET_STRINGS_string_to_data (str,
strlen (str),
&wtid,
sizeof (wtid)))
return TMH_RESPONSE_reply_external_error (connection,
"wtid argument malformed");
eh = TALER_EXCHANGE_connect (ctx,
url,
&cert_cb,
rctx,
TALER_EXCHANGE_OPTION_END);
GNUNET_break (0);
return MHD_NO;
}
/**
* Handle a "/track/transaction" request.
*
* @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
*/
int
MH_handler_track_transaction (struct TMH_RequestHandler *rh,
struct MHD_Connection *connection,
void **connection_cls,
const char *upload_data,
size_t *upload_data_size)
{
unsigned long long transaction_id;
const char *str;
str = MHD_lookup_connection_value (connection,
MHD_GET_ARGUMENT_KIND,
"id");
if (NULL == str)
return TMH_RESPONSE_reply_external_error (connection,
"id argument missing");
if (1 !=
sscanf (str,
"%llu",
str))
return TMH_RESPONSE_reply_external_error (connection,
"id argument must be a number");
GNUNET_break (0);
return MHD_NO;
}
/* end of taler-merchant-httpd_contract.c */
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