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/*
This file is part of TALER
Copyright (C) 2014, 2015 GNUnet e.V.
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_admin.c
* @brief Handle /admin/ requests
* @author Christian Grothoff
*/
#include "platform.h"
#include <gnunet/gnunet_util_lib.h>
#include <jansson.h>
#include "taler-exchange-httpd_admin.h"
#include "taler-exchange-httpd_parsing.h"
#include "taler-exchange-httpd_responses.h"
#include "taler-exchange-httpd_validation.h"
/**
* Closure for #admin_add_incoming_transaction()
*/
struct AddIncomingContext
{
/**
* public key of the reserve
*/
struct TALER_ReservePublicKeyP reserve_pub;
/**
* amount to add to the reserve
*/
struct TALER_Amount amount;
/**
* When did we receive the wire transfer
*/
struct GNUNET_TIME_Absolute execution_time;
/**
* which account send the funds
*/
json_t *sender_account_details;
/**
* Information that uniquely identifies the transfer
*/
json_t *transfer_details;
/**
* Set to the transaction status.
*/
enum GNUNET_DB_QueryStatus qs;
};
/**
* Add an incoming transaction to the database. Checks if the
* transaction is fresh (not a duplicate) and if so adds it to the
* database.
*
* If it returns a non-error code, the transaction logic MUST
* NOT queue a MHD response. IF it returns an hard error, the
* transaction logic MUST queue a MHD response and set @a mhd_ret. IF
* it returns the soft error code, the function MAY be called again to
* retry and MUST not queue a MHD response.
*
* @param cls closure with the `struct AddIncomingContext *`
* @param connection MHD request which triggered the transaction
* @param session database session to use
* @param[out] mhd_ret set to MHD response status for @a connection,
* if transaction failed (!)
* @return transaction status
*/
static enum GNUNET_DB_QueryStatus
admin_add_incoming_transaction (void *cls,
struct MHD_Connection *connection,
struct TALER_EXCHANGEDB_Session *session,
int *mhd_ret)
{
struct AddIncomingContext *aic = cls;
void *json_str;
json_str = json_dumps (aic->transfer_details,
JSON_INDENT(2));
if (NULL == json_str)
{
GNUNET_break (0);
*mhd_ret = TEH_RESPONSE_reply_internal_db_error (connection,
TALER_EC_PARSER_OUT_OF_MEMORY);
return GNUNET_DB_STATUS_HARD_ERROR;
}
aic->qs = TEH_plugin->reserves_in_insert (TEH_plugin->cls,
session,
&aic->reserve_pub,
&aic->amount,
aic->execution_time,
aic->sender_account_details,
json_str,
strlen (json_str));
free (json_str);
if (GNUNET_DB_STATUS_HARD_ERROR == aic->qs)
{
GNUNET_break (0);
*mhd_ret = TEH_RESPONSE_reply_internal_db_error (connection,
TALER_EC_ADMIN_ADD_INCOMING_DB_STORE);
return GNUNET_DB_STATUS_HARD_ERROR;
}
return aic->qs;
}
/**
* Handle a "/admin/add/incoming" request. Parses the
* given "reserve_pub", "amount", "transaction" and "h_wire"
* details and adds the respective transaction to the database.
*
* @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
TEH_ADMIN_handler_admin_add_incoming (struct TEH_RequestHandler *rh,
struct MHD_Connection *connection,
void **connection_cls,
const char *upload_data,
size_t *upload_data_size)
{
struct AddIncomingContext aic;
enum TALER_ErrorCode ec;
char *emsg;
json_t *root;
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_fixed_auto ("reserve_pub", &aic.reserve_pub),
TALER_JSON_spec_amount ("amount", &aic.amount),
GNUNET_JSON_spec_absolute_time ("execution_date", &aic.execution_time),
GNUNET_JSON_spec_json ("sender_account_details", &aic.sender_account_details),
GNUNET_JSON_spec_json ("transfer_details", &aic.transfer_details),
GNUNET_JSON_spec_end ()
};
int res;
int mhd_ret;
res = TEH_PARSE_post_json (connection,
connection_cls,
upload_data,
upload_data_size,
&root);
if (GNUNET_SYSERR == res)
return MHD_NO;
if ( (GNUNET_NO == res) ||
(NULL == root) )
return MHD_YES;
res = TEH_PARSE_json_data (connection,
root,
spec);
json_decref (root);
if (GNUNET_OK != res)
{
GNUNET_break_op (0);
json_decref (root);
return (GNUNET_SYSERR == res) ? MHD_NO : MHD_YES;
}
if (TALER_EC_NONE !=
(ec = TEH_json_validate_wireformat (aic.sender_account_details,
GNUNET_NO,
&emsg)))
{
GNUNET_JSON_parse_free (spec);
mhd_ret = TEH_RESPONSE_reply_external_error (connection,
ec,
emsg);
GNUNET_free (emsg);
return mhd_ret;
}
if (0 != strcasecmp (aic.amount.currency,
TEH_exchange_currency_string))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Exchange uses currency `%s', but /admin/add/incoming tried to use currency `%s'\n",
TEH_exchange_currency_string,
aic.amount.currency);
GNUNET_JSON_parse_free (spec);
return TEH_RESPONSE_reply_arg_invalid (connection,
TALER_EC_ADMIN_ADD_INCOMING_CURRENCY_UNSUPPORTED,
"amount:currency");
}
res = TEH_DB_run_transaction (connection,
&mhd_ret,
&admin_add_incoming_transaction,
&aic);
GNUNET_JSON_parse_free (spec);
if (GNUNET_OK != res)
return mhd_ret;
return TEH_RESPONSE_reply_json_pack (connection,
MHD_HTTP_OK,
"{s:s}",
"status",
(GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == aic.qs)
? "NEW"
: "DUP");
}
/* end of taler-exchange-httpd_admin.c */
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