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/*
This file is part of TALER
(C) 2016-2023 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 bank-lib/fakebank_twg_transfer.c
* @brief implementation of the Taler Wire Gateway "/transfer" endpoint
* @author Christian Grothoff <christian@grothoff.org>
*/
#include "platform.h"
#include "taler_fakebank_lib.h"
#include "taler_bank_service.h"
#include "taler_mhd_lib.h"
#include <gnunet/gnunet_mhd_compat.h>
#include "fakebank.h"
#include "fakebank_common_transact.h"
#include "fakebank_twg_transfer.h"
/**
* Handle incoming HTTP request for /transfer.
*
* @param h the fakebank handle
* @param connection the connection
* @param account account making the transfer
* @param upload_data request data
* @param upload_data_size size of @a upload_data in bytes
* @param con_cls closure for request (a `struct ConnectionContext *`)
* @return MHD result code
*/
MHD_RESULT
TALER_FAKEBANK_handle_transfer_ (
struct TALER_FAKEBANK_Handle *h,
struct MHD_Connection *connection,
const char *account,
const char *upload_data,
size_t *upload_data_size,
void **con_cls)
{
struct ConnectionContext *cc = *con_cls;
enum GNUNET_JSON_PostResult pr;
json_t *json;
uint64_t row_id;
struct GNUNET_TIME_Timestamp ts;
if (NULL == cc)
{
cc = GNUNET_new (struct ConnectionContext);
cc->ctx_cleaner = &GNUNET_JSON_post_parser_cleanup;
*con_cls = cc;
}
pr = GNUNET_JSON_post_parser (REQUEST_BUFFER_MAX,
connection,
&cc->ctx,
upload_data,
upload_data_size,
&json);
switch (pr)
{
case GNUNET_JSON_PR_OUT_OF_MEMORY:
GNUNET_break (0);
return MHD_NO;
case GNUNET_JSON_PR_CONTINUE:
return MHD_YES;
case GNUNET_JSON_PR_REQUEST_TOO_LARGE:
GNUNET_break (0);
return MHD_NO;
case GNUNET_JSON_PR_JSON_INVALID:
GNUNET_break (0);
return MHD_NO;
case GNUNET_JSON_PR_SUCCESS:
break;
}
{
struct GNUNET_HashCode uuid;
struct TALER_WireTransferIdentifierRawP wtid;
const char *credit_account;
char *credit;
const char *base_url;
struct TALER_Amount amount;
enum GNUNET_GenericReturnValue ret;
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_fixed_auto ("request_uid",
&uuid),
TALER_JSON_spec_amount ("amount",
h->currency,
&amount),
GNUNET_JSON_spec_string ("exchange_base_url",
&base_url),
GNUNET_JSON_spec_fixed_auto ("wtid",
&wtid),
GNUNET_JSON_spec_string ("credit_account",
&credit_account),
GNUNET_JSON_spec_end ()
};
if (GNUNET_OK !=
(ret = TALER_MHD_parse_json_data (connection,
json,
spec)))
{
GNUNET_break_op (0);
json_decref (json);
return (GNUNET_NO == ret) ? MHD_YES : MHD_NO;
}
credit = TALER_xtalerbank_account_from_payto (credit_account);
if (NULL == credit)
{
GNUNET_break_op (0);
return TALER_MHD_reply_with_error (
connection,
MHD_HTTP_BAD_REQUEST,
TALER_EC_GENERIC_PAYTO_URI_MALFORMED,
credit_account);
}
ret = TALER_FAKEBANK_make_transfer_ (h,
account,
credit,
&amount,
&wtid,
base_url,
&uuid,
&row_id,
&ts);
if (GNUNET_OK != ret)
{
MHD_RESULT res;
char *uids;
GNUNET_break (0);
uids = GNUNET_STRINGS_data_to_string_alloc (&uuid,
sizeof (uuid));
json_decref (json);
res = TALER_MHD_reply_with_error (connection,
MHD_HTTP_CONFLICT,
TALER_EC_BANK_TRANSFER_REQUEST_UID_REUSED,
uids);
GNUNET_free (uids);
return res;
}
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Receiving incoming wire transfer: %s->%s, subject: %s, amount: %s, from %s\n",
account,
credit,
TALER_B2S (&wtid),
TALER_amount2s (&amount),
base_url);
GNUNET_free (credit);
}
json_decref (json);
/* Finally build response object */
return TALER_MHD_REPLY_JSON_PACK (
connection,
MHD_HTTP_OK,
GNUNET_JSON_pack_uint64 ("row_id",
row_id),
GNUNET_JSON_pack_timestamp ("timestamp",
ts));
}
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