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/*
This file is part of TALER
Copyright (C) 2022 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_management_drain.c
* @brief Handle request to drain profits
* @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_keys.h"
#include "taler-exchange-httpd_management.h"
#include "taler-exchange-httpd_responses.h"
/**
* Closure for the #drain transaction.
*/
struct DrainContext
{
/**
* Fee's signature affirming the #TALER_SIGNATURE_MASTER_DRAIN_PROFITS operation.
*/
struct TALER_MasterSignatureP master_sig;
/**
* Wire transfer identifier to use.
*/
struct TALER_WireTransferIdentifierRawP wtid;
/**
* Account to credit.
*/
const char *payto_uri;
/**
* Configuration section with account to debit.
*/
const char *account_section;
/**
* Signature time.
*/
struct GNUNET_TIME_Timestamp date;
/**
* Amount to transfer.
*/
struct TALER_Amount amount;
};
/**
* Function implementing database transaction to drain profits. Runs the
* transaction logic; 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 a `struct DrainContext`
* @param connection MHD request which triggered the transaction
* @param[out] mhd_ret set to MHD response status for @a connection,
* if transaction failed (!)
* @return transaction status
*/
static enum GNUNET_DB_QueryStatus
drain (void *cls,
struct MHD_Connection *connection,
MHD_RESULT *mhd_ret)
{
struct DrainContext *dc = cls;
enum GNUNET_DB_QueryStatus qs;
qs = TEH_plugin->insert_drain_profit (
TEH_plugin->cls,
&dc->wtid,
dc->account_section,
dc->payto_uri,
dc->date,
&dc->amount,
&dc->master_sig);
if (qs < 0)
{
if (GNUNET_DB_STATUS_SOFT_ERROR == qs)
return qs;
GNUNET_break (0);
*mhd_ret = TALER_MHD_reply_with_error (connection,
MHD_HTTP_INTERNAL_SERVER_ERROR,
TALER_EC_GENERIC_DB_STORE_FAILED,
"insert drain profit");
return qs;
}
return qs;
}
MHD_RESULT
TEH_handler_management_post_drain (
struct MHD_Connection *connection,
const json_t *root)
{
struct DrainContext dc;
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_string ("debit_account_section",
&dc.account_section),
TALER_JSON_spec_payto_uri ("credit_payto_uri",
&dc.payto_uri),
GNUNET_JSON_spec_fixed_auto ("wtid",
&dc.wtid),
GNUNET_JSON_spec_fixed_auto ("master_sig",
&dc.master_sig),
GNUNET_JSON_spec_timestamp ("date",
&dc.date),
TALER_JSON_spec_amount ("amount",
TEH_currency,
&dc.amount),
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)
return MHD_YES; /* failure */
}
TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_EDDSA]++;
if (GNUNET_OK !=
TALER_exchange_offline_profit_drain_verify (
&dc.wtid,
dc.date,
&dc.amount,
dc.account_section,
dc.payto_uri,
&TEH_master_public_key,
&dc.master_sig))
{
/* signature invalid */
GNUNET_break_op (0);
return TALER_MHD_reply_with_error (
connection,
MHD_HTTP_FORBIDDEN,
TALER_EC_EXCHANGE_MANAGEMENT_DRAIN_PROFITS_SIGNATURE_INVALID,
NULL);
}
{
enum GNUNET_GenericReturnValue res;
MHD_RESULT ret;
res = TEH_DB_run_transaction (connection,
"insert drain profit",
TEH_MT_REQUEST_OTHER,
&ret,
&drain,
&dc);
if (GNUNET_SYSERR == res)
return ret;
}
return TALER_MHD_reply_static (
connection,
MHD_HTTP_NO_CONTENT,
NULL,
NULL,
0);
}
/* end of taler-exchange-httpd_management_drain.c */
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