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/*
This file is part of TALER
Copyright (C) 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 merchant-tools/taler-merchant-passwd.c
* @brief Reset access tokens for instances.
* @author Christian Grothoff
*/
#include "platform.h"
#include <taler/taler_util.h>
#include <taler/taler_dbevents.h>
#include <gnunet/gnunet_util_lib.h>
#include "taler_merchantdb_lib.h"
#include "taler_merchantdb_lib.h"
/**
* Instance to set password for.
*/
static char *instance;
/**
* Return value from main().
*/
static int global_ret;
/**
* Main function that will be run.
*
* @param cls closure
* @param args remaining command-line arguments
* @param cfgfile name of the configuration file used (for saving, can be NULL!)
* @param config configuration
*/
static void
run (void *cls,
char *const *args,
const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *config)
{
struct TALER_MERCHANTDB_Plugin *plugin;
struct GNUNET_CONFIGURATION_Handle *cfg;
const char *pw = args[0];
struct TALER_MERCHANTDB_InstanceAuthSettings ias;
enum GNUNET_DB_QueryStatus qs;
if (NULL == pw)
pw = getenv ("TALER_MERCHANT_PASSWORD");
if (NULL == pw)
{
fprintf (stderr,
"New password not specified (pass on command-line or via TALER_MERCHANT_PASSWORD)\n");
global_ret = -1;
return;
}
if (0 != strncmp (pw,
RFC_8959_PREFIX,
strlen (RFC_8959_PREFIX)))
{
fprintf (stderr,
"Invalid password specified, does not begin with `%s'\n",
RFC_8959_PREFIX);
global_ret = 1;
return;
}
if (NULL == instance)
instance = GNUNET_strdup ("default");
cfg = GNUNET_CONFIGURATION_dup (config);
if (NULL ==
(plugin = TALER_MERCHANTDB_plugin_load (cfg)))
{
fprintf (stderr,
"Failed to initialize database plugin.\n");
global_ret = 1;
GNUNET_CONFIGURATION_destroy (cfg);
return;
}
GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_NONCE,
&ias.auth_salt,
sizeof (ias.auth_salt));
GNUNET_assert (GNUNET_YES ==
GNUNET_CRYPTO_kdf (&ias.auth_hash,
sizeof (ias.auth_hash),
&ias.auth_salt,
sizeof (ias.auth_salt),
pw,
strlen (pw),
"merchant-instance-auth",
strlen ("merchant-instance-auth"),
NULL,
0));
if (GNUNET_OK !=
plugin->connect (plugin->cls))
{
fprintf (stderr,
"Failed to connect to database\n");
global_ret = 1;
TALER_MERCHANTDB_plugin_unload (plugin);
GNUNET_CONFIGURATION_destroy (cfg);
return;
}
qs = plugin->update_instance_auth (plugin->cls,
instance,
&ias);
switch (qs)
{
case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
{
struct GNUNET_DB_EventHeaderP es = {
.size = ntohs (sizeof (es)),
.type = ntohs (TALER_DBEVENT_MERCHANT_INSTANCE_SETTINGS)
};
plugin->event_notify (plugin->cls,
&es,
instance,
strlen (instance) + 1);
}
break;
case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
fprintf (stderr,
"Instance `%s' unknown, cannot reset token\n",
instance);
global_ret = 2;
break;
case GNUNET_DB_STATUS_SOFT_ERROR:
case GNUNET_DB_STATUS_HARD_ERROR:
fprintf (stderr,
"Internal database error.\n");
global_ret = 3;
break;
}
TALER_MERCHANTDB_plugin_unload (plugin);
GNUNET_CONFIGURATION_destroy (cfg);
}
/**
* The main function of the database initialization tool.
* Used to initialize the Taler Exchange's database.
*
* @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)
{
struct GNUNET_GETOPT_CommandLineOption options[] = {
GNUNET_GETOPT_option_string ('i',
"instance",
"ID",
"which instance to reset the password of",
&instance),
GNUNET_GETOPT_option_version (PACKAGE_VERSION "-" VCS_VERSION),
GNUNET_GETOPT_OPTION_END
};
enum GNUNET_GenericReturnValue ret;
/* force linker to link against libtalerutil; if we do
not do this, the linker may "optimize" libtalerutil
away and skip #TALER_OS_init(), which we do need */
(void) TALER_project_data_default ();
ret = GNUNET_PROGRAM_run (
argc, argv,
"taler-merchant-passwd",
gettext_noop ("Reset instance password"),
options,
&run, NULL);
if (GNUNET_SYSERR == ret)
return 3;
if (GNUNET_NO == ret)
return 0;
return global_ret;
}
/* end of taler-merchant-passwd.c */
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