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/*
This file is part of TALER
(C) 2014 Christian Grothoff (and other contributing authors)
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, If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file taler-mint-reservemod.c
* @brief Modify reserves.
* @author Florian Dold
* @author Benedikt Mueller
*/
#include "platform.h"
#include <gnunet/gnunet_util_lib.h>
#include <libpq-fe.h>
#include "taler_util.h"
#include "taler_signatures.h"
#include "mint.h"
static char *mintdir;
static struct GNUNET_CRYPTO_EddsaPublicKey *reserve_pub;
static struct GNUNET_CONFIGURATION_Handle *kcfg;
static PGconn *db_conn;
/**
* Create a new or add to existing reserve.
* Fails if currencies do not match.
*
* @param denom denomination to add
*
* @return ...
*/
int
reservemod_add (struct TALER_Amount denom)
{
PGresult *result;
{
const void *param_values[] = { reserve_pub };
int param_lengths[] = {sizeof(struct GNUNET_CRYPTO_EddsaPublicKey)};
int param_formats[] = {1};
result = PQexecParams (db_conn,
"select balance_value, balance_fraction, balance_currency from reserves where reserve_pub=$1 limit 1;",
1, NULL, (const char * const *) param_values, param_lengths, param_formats, 1);
}
if (PGRES_TUPLES_OK != PQresultStatus (result))
{
fprintf (stderr, "Select failed: %s\n", PQresultErrorMessage (result));
return GNUNET_SYSERR;
}
if (0 == PQntuples (result))
{
struct GNUNET_TIME_AbsoluteNBO exnbo;
exnbo = GNUNET_TIME_absolute_hton (GNUNET_TIME_absolute_add ( GNUNET_TIME_absolute_get (), GNUNET_TIME_UNIT_YEARS));
uint32_t value = htonl (denom.value);
uint32_t fraction = htonl (denom.fraction);
const void *param_values[] = {
reserve_pub,
&value,
&fraction,
denom.currency,
&exnbo};
int param_lengths[] = {32, 4, 4, strlen(denom.currency), 8};
int param_formats[] = {1, 1, 1, 1, 1};
result = PQexecParams (db_conn,
"insert into reserves (reserve_pub, balance_value, balance_fraction, balance_currency, "
" expiration_date )"
"values ($1,$2,$3,$4,$5);",
5, NULL, (const char **) param_values, param_lengths, param_formats, 1);
if (PGRES_COMMAND_OK != PQresultStatus (result))
{
fprintf (stderr, "Insert failed: %s\n", PQresultErrorMessage (result));
return GNUNET_SYSERR;
}
}
else
{
struct TALER_Amount old_denom;
struct TALER_Amount new_denom;
struct TALER_AmountNBO new_denom_nbo;
int denom_indices[] = {0, 1, 2};
int param_lengths[] = {4, 4, 32};
int param_formats[] = {1, 1, 1};
const void *param_values[] = {
&new_denom_nbo.value,
&new_denom_nbo.fraction,
reserve_pub
};
GNUNET_assert (GNUNET_OK == TALER_TALER_DB_extract_amount (result, 0, denom_indices, &old_denom));
new_denom = TALER_amount_add (old_denom, denom);
new_denom_nbo = TALER_amount_hton (new_denom);
result = PQexecParams (db_conn,
"UPDATE reserves "
"SET balance_value = $1, balance_fraction = $2, "
" status_sig = NULL, status_sign_pub = NULL "
"WHERE reserve_pub = $3 ",
3, NULL, (const char **) param_values, param_lengths, param_formats, 1);
if (PGRES_COMMAND_OK != PQresultStatus (result))
{
fprintf (stderr, "Update failed: %s\n", PQresultErrorMessage (result));
return GNUNET_SYSERR;
}
if (0 != strcmp ("1", PQcmdTuples (result)))
{
fprintf (stderr, "Update failed (updated '%s' tupes instead of '1')\n",
PQcmdTuples (result));
return GNUNET_SYSERR;
}
}
return GNUNET_OK;
}
/**
* The main function of the reservemod tool
*
* @param argc number of arguments from the command line
* @param argv command line arguments
* @return 0 ok, 1 on error
*/
int
main (int argc, char *const *argv)
{
static char *reserve_pub_str;
static char *add_str;
static const struct GNUNET_GETOPT_CommandLineOption options[] = {
GNUNET_GETOPT_OPTION_HELP ("gnunet-mint-keyup OPTIONS"),
{'d', "mint-dir", "DIR",
"mint directory with keys to update", 1,
&GNUNET_GETOPT_set_filename, &mintdir},
{'R', "reserve", "KEY",
"reserve (public key) to modify", 1,
&GNUNET_GETOPT_set_string, &reserve_pub_str},
{'a', "add", "DENOM",
"value to add", 1,
&GNUNET_GETOPT_set_string, &add_str},
GNUNET_GETOPT_OPTION_END
};
char *TALER_MINT_db_connection_cfg_str;
GNUNET_assert (GNUNET_OK == GNUNET_log_setup ("taler-mint-keycheck", "WARNING", NULL));
if (GNUNET_GETOPT_run ("taler-mint-keyup", options, argc, argv) < 0)
return 1;
if (NULL == mintdir)
{
fprintf (stderr, "mint directory not given\n");
return 1;
}
reserve_pub = GNUNET_new (struct GNUNET_CRYPTO_EddsaPublicKey);
if ((NULL == reserve_pub_str) ||
(GNUNET_OK != GNUNET_STRINGS_string_to_data (reserve_pub_str,
strlen (reserve_pub_str),
reserve_pub,
sizeof (struct GNUNET_CRYPTO_EddsaPublicKey))))
{
fprintf (stderr, "reserve key invalid\n");
return 1;
}
kcfg = TALER_MINT_config_load (mintdir);
if (NULL == kcfg)
{
fprintf (stderr, "can't load mint configuration\n");
return 1;
}
if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (kcfg, "mint", "db", &TALER_MINT_db_connection_cfg_str))
{
fprintf (stderr, "db configuration string not found\n");
return 42;
}
db_conn = PQconnectdb (TALER_MINT_db_connection_cfg_str);
if (CONNECTION_OK != PQstatus (db_conn))
{
fprintf (stderr, "db connection failed: %s\n", PQerrorMessage (db_conn));
return 1;
}
if (NULL != add_str)
{
struct TALER_Amount add_value;
if (GNUNET_OK != TALER_string_to_amount (add_str, &add_value))
{
fprintf (stderr, "could not read value\n");
return 1;
}
if (GNUNET_OK != reservemod_add (add_value))
{
fprintf (stderr, "adding value failed\n");
return 1;
}
}
return 0;
}
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