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/*
This file is part of TALER
Copyright (C) 2015 GNUnet e.V.
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-exchange-sepa.c
* @brief Create signed response for /wire/sepa requests.
* @author Christian Grothoff
*/
#include <platform.h>
#include <jansson.h>
#include <gnunet/gnunet_json_lib.h>
#include "taler_crypto_lib.h"
#include "taler_signatures.h"
/**
* Filename of the master private key.
*/
static char *masterkeyfile;
/**
* Account holder name.
*/
static char *sepa_name;
/**
* Account holder address.
*/
static char *sepa_address;
/**
* IBAN number.
*/
static char *iban;
/**
* BIC number.
*/
static char *bic;
/**
* Where to write the result.
*/
static char *output_filename;
/**
* The main function of the taler-exchange-sepa tool. This tool is used
* to sign the SEPA bank account details using the master key.
*
* @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 const struct GNUNET_GETOPT_CommandLineOption options[] = {
{'a', "address", "ADDRESS",
"account holder address", 1,
&GNUNET_GETOPT_set_string, &sepa_address},
{'b', "bic", "BICCODE",
"bank BIC code", 1,
&GNUNET_GETOPT_set_string, &bic},
{'i', "iban", "IBAN",
"IBAN number of the account", 1,
&GNUNET_GETOPT_set_string, &iban},
{'m', "master-key", "FILE",
"master key file (private key)", 1,
&GNUNET_GETOPT_set_filename, &masterkeyfile},
{'n', "name", "NAME",
"name of the account holder", 1,
&GNUNET_GETOPT_set_string, &sepa_name},
{'o', "output", "FILE",
"where to write the result", 1,
&GNUNET_GETOPT_set_filename, &output_filename},
TALER_GETOPT_OPTION_HELP ("Setup /wire/sepa response"),
GNUNET_GETOPT_OPTION_VERSION (VERSION "-" VCS_VERSION),
GNUNET_GETOPT_OPTION_END
};
struct GNUNET_CRYPTO_EddsaPrivateKey *eddsa_priv;
struct TALER_MasterWireSepaDetailsPS wsd;
struct TALER_MasterSignatureP sig;
struct GNUNET_HashContext *hc;
json_t *reply;
char *json_str;
struct GNUNET_HashCode salt;
GNUNET_assert (GNUNET_OK ==
GNUNET_log_setup ("taler-exchange-sepa",
"WARNING",
NULL));
if (GNUNET_GETOPT_run ("taler-exchange-sepa",
options,
argc, argv) < 0)
return 1;
if (NULL == masterkeyfile)
{
fprintf (stderr,
"Master key file not given\n");
return 1;
}
eddsa_priv = GNUNET_CRYPTO_eddsa_key_create_from_file (masterkeyfile);
if (NULL == eddsa_priv)
{
fprintf (stderr,
"Failed to initialize master key from file `%s'\n",
masterkeyfile);
return 1;
}
if ( (NULL == sepa_address) ||
(NULL == iban) ||
(NULL == sepa_name) ||
(NULL == bic) )
{
fprintf (stderr,
"Required arguments missing\n");
return 1;
}
/* Compute message to sign */
GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_NONCE,
&salt,
sizeof (salt));
hc = GNUNET_CRYPTO_hash_context_start ();
GNUNET_CRYPTO_hash_context_read (hc,
sepa_name,
strlen (sepa_name) + 1);
GNUNET_CRYPTO_hash_context_read (hc,
iban,
strlen (iban) + 1);
GNUNET_CRYPTO_hash_context_read (hc,
bic,
strlen (bic) + 1);
wsd.purpose.size = htonl (sizeof (wsd));
wsd.purpose.purpose = htonl (TALER_SIGNATURE_MASTER_SEPA_DETAILS);
GNUNET_CRYPTO_hash_context_finish (hc,
&wsd.h_sepa_details);
GNUNET_CRYPTO_eddsa_sign (eddsa_priv,
&wsd.purpose,
&sig.eddsa_signature);
GNUNET_free (eddsa_priv);
/* build JSON message */
reply = json_pack ("{s:s, s:s, s:s, s:s, s:s, s:o, s:o}",
"type", "sepa",
"address", sepa_address,
"receiver_name", sepa_name,
"iban", iban,
"bic", bic,
"salt", GNUNET_JSON_from_data (&salt,
sizeof (salt)),
"sig", GNUNET_JSON_from_data (&sig,
sizeof (sig)));
GNUNET_assert (NULL != reply);
/* dump result to stdout */
json_str = json_dumps (reply, JSON_INDENT(2));
GNUNET_assert (NULL != json_str);
if (NULL != output_filename)
{
fclose (stdout);
stdout = fopen (output_filename,
"w+");
}
fprintf (stdout,
"%s",
json_str);
fflush (stdout);
free (json_str);
return 0;
}
/* end of taler-exchange-sepa.c */
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