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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_api_check.c
* @brief library that fakes being a Taler bank for testcases
* @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_lookup.h"
/**
* Generate log messages for failed check operation.
*
* @param h handle to output transaction log for
*/
static void
check_log (struct TALER_FAKEBANK_Handle *h)
{
for (uint64_t i = 0; i<h->ram_limit; i++)
{
struct Transaction *t = h->transactions[i];
if (NULL == t)
continue;
if (! t->unchecked)
continue;
switch (t->type)
{
case T_DEBIT:
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"%s -> %s (%s) %s (%s)\n",
t->debit_account->account_name,
t->credit_account->account_name,
TALER_amount2s (&t->amount),
t->subject.debit.exchange_base_url,
"DEBIT");
break;
case T_CREDIT:
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"%s -> %s (%s) %s (%s)\n",
t->debit_account->account_name,
t->credit_account->account_name,
TALER_amount2s (&t->amount),
TALER_B2S (&t->subject.credit.reserve_pub),
"CREDIT");
break;
case T_WAD:
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"%s -> %s (%s) %s[%s] (%s)\n",
t->debit_account->account_name,
t->credit_account->account_name,
TALER_amount2s (&t->amount),
t->subject.wad.origin_base_url,
TALER_B2S (&t->subject.wad),
"WAD");
break;
}
}
}
enum GNUNET_GenericReturnValue
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)
{
struct Account *debit_account;
struct Account *credit_account;
GNUNET_assert (0 ==
strcasecmp (want_amount->currency,
h->currency));
debit_account = TALER_FAKEBANK_lookup_account_ (h,
want_debit,
NULL);
credit_account = TALER_FAKEBANK_lookup_account_ (h,
want_credit,
NULL);
if (NULL == debit_account)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"I wanted: %s->%s (%s) from exchange %s (DEBIT), but debit account does not even exist!\n",
want_debit,
want_credit,
TALER_amount2s (want_amount),
exchange_base_url);
return GNUNET_SYSERR;
}
if (NULL == credit_account)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"I wanted: %s->%s (%s) from exchange %s (DEBIT), but credit account does not even exist!\n",
want_debit,
want_credit,
TALER_amount2s (want_amount),
exchange_base_url);
return GNUNET_SYSERR;
}
for (struct Transaction *t = debit_account->out_tail;
NULL != t;
t = t->prev_out)
{
if ( (t->unchecked) &&
(credit_account == t->credit_account) &&
(T_DEBIT == t->type) &&
(0 == TALER_amount_cmp (want_amount,
&t->amount)) &&
(0 == strcasecmp (exchange_base_url,
t->subject.debit.exchange_base_url)) )
{
*wtid = t->subject.debit.wtid;
t->unchecked = false;
return GNUNET_OK;
}
}
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Did not find matching transaction! I have:\n");
check_log (h);
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"I wanted: %s->%s (%s) from exchange %s (DEBIT)\n",
want_debit,
want_credit,
TALER_amount2s (want_amount),
exchange_base_url);
return GNUNET_SYSERR;
}
enum GNUNET_GenericReturnValue
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)
{
struct Account *debit_account;
struct Account *credit_account;
GNUNET_assert (0 == strcasecmp (want_amount->currency,
h->currency));
debit_account = TALER_FAKEBANK_lookup_account_ (h,
want_debit,
NULL);
credit_account = TALER_FAKEBANK_lookup_account_ (h,
want_credit,
NULL);
if (NULL == debit_account)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"I wanted:\n%s -> %s (%s) with subject %s (CREDIT) but debit account is unknown.\n",
want_debit,
want_credit,
TALER_amount2s (want_amount),
TALER_B2S (reserve_pub));
return GNUNET_SYSERR;
}
if (NULL == credit_account)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"I wanted:\n%s -> %s (%s) with subject %s (CREDIT) but credit account is unknown.\n",
want_debit,
want_credit,
TALER_amount2s (want_amount),
TALER_B2S (reserve_pub));
return GNUNET_SYSERR;
}
for (struct Transaction *t = credit_account->in_tail;
NULL != t;
t = t->prev_in)
{
if ( (t->unchecked) &&
(debit_account == t->debit_account) &&
(T_CREDIT == t->type) &&
(0 == TALER_amount_cmp (want_amount,
&t->amount)) &&
(0 == GNUNET_memcmp (reserve_pub,
&t->subject.credit.reserve_pub)) )
{
t->unchecked = false;
return GNUNET_OK;
}
}
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Did not find matching transaction!\nI have:\n");
check_log (h);
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"I wanted:\n%s -> %s (%s) with subject %s (CREDIT)\n",
want_debit,
want_credit,
TALER_amount2s (want_amount),
TALER_B2S (reserve_pub));
return GNUNET_SYSERR;
}
enum GNUNET_GenericReturnValue
TALER_FAKEBANK_check_empty (struct TALER_FAKEBANK_Handle *h)
{
for (uint64_t i = 0; i<h->ram_limit; i++)
{
struct Transaction *t = h->transactions[i];
if ( (NULL != t) &&
(t->unchecked) )
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Expected empty transaction set, but I have:\n");
check_log (h);
return GNUNET_SYSERR;
}
}
return GNUNET_OK;
}
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