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/*
This file is part of GNUnet.
(C) 2012 Christian Grothoff (and other contributing authors)
GNUnet 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.
GNUnet 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 GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file util/gnunet-config.c
* @brief tool to access and manipulate GNUnet configuration files
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
/**
* Name of the section
*/
static char *section;
/**
* Name of the option
*/
static char *option;
/**
* Value to set
*/
static char *value;
/**
* Treat option as a filename.
*/
static int is_filename;
/**
* Return value from 'main'.
*/
static int ret;
/**
* Print each option in a given section.
*
* @param cls closure
* @param section name of the section
* @param option name of the option
* @param value value of the option
*/
static void
print_option (void *cls, const char *section,
const char *option,
const char *value)
{
fprintf (stdout,
"%s = %s\n", option, value);
}
/**
* Main function that will be run by the scheduler.
*
* @param cls closure
* @param args remaining command-line arguments
* @param cfgfile name of the configuration file used (for saving, can be NULL!)
* @param cfg configuration
*/
static void
run (void *cls, char *const *args, const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *cfg)
{
struct GNUNET_CONFIGURATION_Handle *out;
if (NULL == section)
{
fprintf (stderr, _("--section argument is required\n"));
ret = 1;
return;
}
if (NULL == value)
{
if (NULL == option)
{
GNUNET_CONFIGURATION_iterate_section_values (cfg, section,
&print_option, NULL);
}
else
{
if (is_filename)
{
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_filename (cfg, section, option, &value))
{
GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
section, option);
ret = 3;
return;
}
}
else
{
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (cfg, section, option, &value))
{
GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
section, option);
ret = 3;
return;
}
}
fprintf (stdout, "%s\n", value);
}
}
else
{
if (NULL == option)
{
fprintf (stderr, _("--option argument required to set value\n"));
ret = 1;
return;
}
out = GNUNET_CONFIGURATION_dup (cfg);
GNUNET_CONFIGURATION_set_value_string (out, section, option, value);
if (GNUNET_OK !=
GNUNET_CONFIGURATION_write (out, cfgfile))
ret = 2;
GNUNET_CONFIGURATION_destroy (out);
return;
}
}
/**
* Program to manipulate configuration files.
*
* @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[] = {
{ 'f', "filename", NULL,
gettext_noop ("obtain option of value as a filename (with $-expansion)"),
0, &GNUNET_GETOPT_set_one, &is_filename },
{ 's', "section", "SECTION",
gettext_noop ("name of the section to access"),
1, &GNUNET_GETOPT_set_string, §ion },
{ 'o', "option", "OPTION",
gettext_noop ("name of the option to access"),
1, &GNUNET_GETOPT_set_string, &option },
{ 'V', "value", "VALUE",
gettext_noop ("value to set"),
1, &GNUNET_GETOPT_set_string, &value },
GNUNET_GETOPT_OPTION_END
};
if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
return 2;
ret = (GNUNET_OK ==
GNUNET_PROGRAM_run (argc, argv, "gnunet-config [OPTIONS]",
gettext_noop ("Manipulate GNUnet configuration files"),
options, &run, NULL)) ? 0 : ret;
GNUNET_free ((void*) argv);
return ret;
}
/* end of gnunet-config.c */
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