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/*
This file is part of TALER
(C) 2016-2020 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 include/taler_fakebank_lib.h
* @brief API for a library that fakes being a Taler bank
* @author Christian Grothoff <christian@grothoff.org>
*/
#ifndef TALER_FAKEBANK_H
#define TALER_FAKEBANK_H
#include "taler_util.h"
#include <gnunet/gnunet_json_lib.h>
#include "taler_json_lib.h"
#include <microhttpd.h>
/**
* Handle for the fake bank.
*/
struct TALER_FAKEBANK_Handle;
/**
* Start the fake bank. The fake bank will, like the normal bank, listen for
* requests for /admin/add/incoming and /transfer. However, instead of
* executing or storing those requests, it will simply allow querying whether
* such a request has been made via #TALER_FAKEBANK_check_debit() and
* #TALER_FAKEBANK_check_credit() as well as the history API.
*
* This is useful for writing testcases to check whether the exchange
* would have issued the correct wire transfer orders.
*
* @param port port to listen to
* @param currency which currency should the bank offer
* @return NULL on error
*/
struct TALER_FAKEBANK_Handle *
TALER_FAKEBANK_start (uint16_t port,
const char *currency);
/**
* Check that no wire transfers were ordered (or at least none
* that have not been taken care of via #TALER_FAKEBANK_check_debit()
* or #TALER_FAKEBANK_check_credit()).
* If any transactions are onrecord, return #GNUNET_SYSERR.
*
* @param h bank instance
* @return #GNUNET_OK on success
*/
int
TALER_FAKEBANK_check_empty (struct TALER_FAKEBANK_Handle *h);
/**
* Tell the fakebank to create another wire transfer *from* an exchange.
*
* @param h fake bank handle
* @param debit_account account to debit
* @param credit_account account to credit
* @param amount amount to transfer
* @param subject wire transfer subject to use
* @param exchange_base_url exchange URL
* @param request_uid unique number to make the request unique, or NULL to create one
* @param[out] ret_row_id pointer to store the row ID of this transaction
* @return #GNUNET_YES if the transfer was successful,
* #GNUNET_SYSERR if the request_uid was reused for a different transfer
*/
int
TALER_FAKEBANK_make_transfer (
struct TALER_FAKEBANK_Handle *h,
const char *debit_account,
const char *credit_account,
const struct TALER_Amount *amount,
const struct TALER_WireTransferIdentifierRawP *subject,
const char *exchange_base_url,
const struct GNUNET_HashCode *request_uid,
uint64_t *ret_row_id);
/**
* Tell the fakebank to create another wire transfer *to* an exchange.
*
* @param h fake bank handle
* @param debit_account account to debit
* @param credit_account account to credit
* @param amount amount to transfer
* @param reserve_pub reserve public key to use in subject
* @return serial_id of the transfer
*/
uint64_t
TALER_FAKEBANK_make_admin_transfer (
struct TALER_FAKEBANK_Handle *h,
const char *debit_account,
const char *credit_account,
const struct TALER_Amount *amount,
const struct TALER_ReservePublicKeyP *reserve_pub);
/**
* Check that the @a want_amount was transferred from the @a
* want_debit to the @a want_credit account. If so, set the @a subject
* to the transfer identifier and remove the transaction from the
* list. If the transaction was not recorded, return #GNUNET_SYSERR.
*
* @param h bank instance
* @param want_amount transfer amount desired
* @param want_debit account that should have been debited
* @param want_debit account that should have been credited
* @param exchange_base_url expected base URL of the exchange,
* i.e. "https://example.com/"; may include a port
* @param[out] wtid set to the wire transfer identifier
* @return #GNUNET_OK on success
*/
int
TALER_FAKEBANK_check_debit (struct TALER_FAKEBANK_Handle *h,
const struct TALER_Amount *want_amount,
const char *want_debit,
const char *want_credit,
const char *exchange_base_url,
struct TALER_WireTransferIdentifierRawP *wtid);
/**
* Check that the @a want_amount was transferred from the @a want_debit to the
* @a want_credit account with the @a subject. If so, remove the transaction
* from the list. If the transaction was not recorded, return #GNUNET_SYSERR.
*
* @param h bank instance
* @param want_amount transfer amount desired
* @param want_debit account that should have been debited
* @param want_debit account that should have been credited
* @param reserve_pub reserve public key expected in wire subject
* @return #GNUNET_OK on success
*/
int
TALER_FAKEBANK_check_credit (struct TALER_FAKEBANK_Handle *h,
const struct TALER_Amount *want_amount,
const char *want_debit,
const char *want_credit,
const struct TALER_ReservePublicKeyP *reserve_pub);
/**
* Stop running the fake bank.
*
* @param h bank to stop
*/
void
TALER_FAKEBANK_stop (struct TALER_FAKEBANK_Handle *h);
#endif
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