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/*
This file is part of GNUnet.
(C) 2009 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 2, 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/program.c
* @brief standard code for GNUnet startup and shutdown
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_common.h"
#include "gnunet_configuration_lib.h"
#include "gnunet_crypto_lib.h"
#include "gnunet_directories.h"
#include "gnunet_getopt_lib.h"
#include "gnunet_os_lib.h"
#include "gnunet_program_lib.h"
#include "gnunet_resolver_service.h"
#include "gnunet_scheduler_lib.h"
#include <gcrypt.h>
/**
* Context for the command.
*/
struct CommandContext
{
/**
* Argv argument.
*/
char *const *args;
/**
* Name of the configuration file used, can be NULL!
*/
char *cfgfile;
/**
* Main function to run.
*/
GNUNET_PROGRAM_Main task;
/**
* Closure for task.
*/
void *task_cls;
/**
* Configuration to use.
*/
const struct GNUNET_CONFIGURATION_Handle *cfg;
};
/**
* Initial task called by the scheduler for each
* program. Runs the program-specific main task.
*/
static void
program_main (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct CommandContext *cc = cls;
GNUNET_RESOLVER_connect (cc->cfg);
cc->task (cc->task_cls, cc->args, cc->cfgfile, cc->cfg);
}
/**
* Compare function for 'qsort' to sort command-line arguments by the
* short option.
*
* @param a1 first command line option
* @param a2 second command line option
*/
static int
cmd_sorter (__const void *a1, __const void *a2)
{
__const struct GNUNET_GETOPT_CommandLineOption *c1 = a1;
__const struct GNUNET_GETOPT_CommandLineOption *c2 = a2;
if (toupper ( (unsigned char) c1->shortName) > toupper ( (unsigned char) c2->shortName))
return 1;
if (toupper ( (unsigned char) c1->shortName) < toupper ( (unsigned char) c2->shortName))
return -1;
if (c1->shortName > c2->shortName)
return 1;
if (c1->shortName < c2->shortName)
return -1;
return 0;
}
/**
* Run a standard GNUnet command startup sequence (initialize loggers
* and configuration, parse options).
*
* @param argc number of command line arguments
* @param argv command line arguments
* @param binaryName our expected name
* @param binaryHelp help text for the program
* @param options command line options
* @param task main function to run
* @param task_cls closure for task
* @return GNUNET_SYSERR on error, GNUNET_OK on success
*/
int
GNUNET_PROGRAM_run (int argc,
char *const *argv,
const char *binaryName,
const char *binaryHelp,
const struct GNUNET_GETOPT_CommandLineOption *options,
GNUNET_PROGRAM_Main task, void *task_cls)
{
struct CommandContext cc;
char *path;
char *loglev;
char *logfile;
int ret;
unsigned int cnt;
struct GNUNET_CONFIGURATION_Handle *cfg;
struct GNUNET_GETOPT_CommandLineOption defoptions[] = {
GNUNET_GETOPT_OPTION_CFG_FILE (&cc.cfgfile),
GNUNET_GETOPT_OPTION_HELP (binaryHelp),
GNUNET_GETOPT_OPTION_LOGLEVEL (&loglev),
GNUNET_GETOPT_OPTION_LOGFILE (&logfile),
GNUNET_GETOPT_OPTION_VERSION (PACKAGE_VERSION)
};
struct GNUNET_GETOPT_CommandLineOption *allopts;
const char *gargs;
logfile = NULL;
gargs = getenv ("GNUNET_ARGS");
if (gargs != NULL)
{
char **gargv;
unsigned int gargc;
int i;
char *tok;
char *cargs;
gargv = NULL;
gargc = 0;
for (i=0;i<argc;i++)
GNUNET_array_append (gargv, gargc, GNUNET_strdup (argv[i]));
cargs = GNUNET_strdup (gargs);
tok = strtok (cargs, " ");
while (NULL != tok)
{
GNUNET_array_append (gargv, gargc, GNUNET_strdup (tok));
tok = strtok (NULL, " ");
}
GNUNET_free (cargs);
GNUNET_array_append (gargv, gargc, NULL);
argv = (char *const *) gargv;
argc = gargc - 1;
}
memset (&cc, 0, sizeof (cc));
loglev = NULL;
cc.task = task;
cc.task_cls = task_cls;
cc.cfg = cfg = GNUNET_CONFIGURATION_create ();
/* prepare */
#if ENABLE_NLS
setlocale (LC_ALL, "");
path = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_LOCALEDIR);
if (path != NULL)
{
BINDTEXTDOMAIN ("GNUnet", path);
GNUNET_free (path);
}
textdomain ("GNUnet");
#endif
cnt = 0;
while (options[cnt].name != NULL)
cnt++;
allopts =
GNUNET_malloc ((cnt +
1) * sizeof (struct GNUNET_GETOPT_CommandLineOption) +
sizeof (defoptions));
memcpy (allopts, defoptions, sizeof (defoptions));
memcpy (&allopts
[sizeof (defoptions) /
sizeof (struct GNUNET_GETOPT_CommandLineOption)], options,
(cnt + 1) * sizeof (struct GNUNET_GETOPT_CommandLineOption));
cnt +=
sizeof (defoptions) / sizeof (struct GNUNET_GETOPT_CommandLineOption);
qsort (allopts, cnt, sizeof (struct GNUNET_GETOPT_CommandLineOption),
&cmd_sorter);
loglev = GNUNET_strdup ("WARNING");
cc.cfgfile = GNUNET_strdup (GNUNET_DEFAULT_USER_CONFIG_FILE);
if ((-1 == (ret = GNUNET_GETOPT_run (binaryName,
allopts,
(unsigned int) argc, argv))) ||
((GNUNET_OK !=
GNUNET_log_setup (binaryName,
loglev,
logfile)) ||
(GNUNET_OK != GNUNET_CONFIGURATION_load (cfg, cc.cfgfile))))
{
GNUNET_CONFIGURATION_destroy (cfg);
GNUNET_free_non_null (cc.cfgfile);
GNUNET_free (loglev);
GNUNET_free (allopts);
return GNUNET_SYSERR;
}
GNUNET_free (allopts);
/* run */
cc.args = &argv[ret];
GNUNET_SCHEDULER_run (&program_main, &cc);
/* clean up */
GNUNET_CONFIGURATION_destroy (cfg);
GNUNET_free_non_null (cc.cfgfile);
GNUNET_free (loglev);
return GNUNET_OK;
}
/* end of program.c */
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