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/* -*- mode: C; c-file-style: "gnu" -*- */
/* main.c main() for message bus
*
* Copyright (C) 2003 Red Hat, Inc.
*
* Licensed under the Academic Free License version 1.2
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "bus.h"
#include <dbus/dbus-internals.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
static BusContext *context;
static dbus_bool_t got_sighup = FALSE;
static void
signal_handler (int sig)
{
switch (sig)
{
case SIGHUP:
got_sighup = TRUE;
case SIGTERM:
_dbus_loop_quit (bus_context_get_loop (context));
break;
}
}
static void
usage (void)
{
fprintf (stderr, "dbus-daemon-1 [--version] [--session] [--system] [--config-file=FILE] [--print-address[=descriptor]]\n");
exit (1);
}
static void
version (void)
{
printf ("D-BUS Message Bus Daemon %s\n"
"Copyright (C) 2002, 2003 Red Hat, Inc., CodeFactory AB, and others\n"
"This is free software; see the source for copying conditions.\n"
"There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n",
VERSION);
exit (0);
}
static void
check_two_config_files (const DBusString *config_file,
const char *extra_arg)
{
if (_dbus_string_get_length (config_file) > 0)
{
fprintf (stderr, "--%s specified but configuration file %s already requested\n",
extra_arg, _dbus_string_get_const_data (config_file));
exit (1);
}
}
static void
check_two_addr_descriptors (const DBusString *addr_fd,
const char *extra_arg)
{
if (_dbus_string_get_length (addr_fd) > 0)
{
fprintf (stderr, "--%s specified but printing address to %s already requested\n",
extra_arg, _dbus_string_get_const_data (addr_fd));
exit (1);
}
}
int
main (int argc, char **argv)
{
DBusError error;
DBusString config_file;
DBusString addr_fd;
const char *prev_arg;
int print_addr_fd;
int i;
dbus_bool_t print_address;
if (!_dbus_string_init (&config_file))
return 1;
if (!_dbus_string_init (&addr_fd))
return 1;
print_address = FALSE;
prev_arg = NULL;
i = 1;
while (i < argc)
{
const char *arg = argv[i];
if (strcmp (arg, "--help") == 0 ||
strcmp (arg, "-h") == 0 ||
strcmp (arg, "-?") == 0)
usage ();
else if (strcmp (arg, "--version") == 0)
version ();
else if (strcmp (arg, "--system") == 0)
{
check_two_config_files (&config_file, "system");
if (!_dbus_string_append (&config_file, DBUS_SYSTEM_CONFIG_FILE))
exit (1);
}
else if (strcmp (arg, "--session") == 0)
{
check_two_config_files (&config_file, "session");
if (!_dbus_string_append (&config_file, DBUS_SESSION_CONFIG_FILE))
exit (1);
}
else if (strstr (arg, "--config-file=") == arg)
{
const char *file;
check_two_config_files (&config_file, "config-file");
file = strchr (arg, '=');
++file;
if (!_dbus_string_append (&config_file, file))
exit (1);
}
else if (prev_arg &&
strcmp (prev_arg, "--config-file") == 0)
{
check_two_config_files (&config_file, "config-file");
if (!_dbus_string_append (&config_file, arg))
exit (1);
}
else if (strcmp (arg, "--config-file") == 0)
; /* wait for next arg */
else if (strstr (arg, "--print-address=") == arg)
{
const char *desc;
check_two_addr_descriptors (&addr_fd, "print-address");
desc = strchr (arg, '=');
++desc;
if (!_dbus_string_append (&addr_fd, desc))
exit (1);
print_address = TRUE;
}
else if (prev_arg &&
strcmp (prev_arg, "--print-address") == 0)
{
check_two_addr_descriptors (&addr_fd, "print-address");
if (!_dbus_string_append (&addr_fd, arg))
exit (1);
print_address = TRUE;
}
else if (strcmp (arg, "--print-address") == 0)
print_address = TRUE; /* and we'll get the next arg if appropriate */
else
usage ();
prev_arg = arg;
++i;
}
if (_dbus_string_get_length (&config_file) == 0)
{
fprintf (stderr, "No configuration file specified.\n");
usage ();
}
print_addr_fd = -1;
if (print_address)
{
print_addr_fd = 1; /* stdout */
if (_dbus_string_get_length (&addr_fd) > 0)
{
long val;
int end;
if (!_dbus_string_parse_int (&addr_fd, 0, &val, &end) ||
end != _dbus_string_get_length (&addr_fd) ||
val < 0 || val > _DBUS_INT_MAX)
{
fprintf (stderr, "Invalid file descriptor: \"%s\"\n",
_dbus_string_get_const_data (&addr_fd));
exit (1);
}
print_addr_fd = val;
}
}
dbus_error_init (&error);
context = bus_context_new (&config_file, print_addr_fd, &error);
_dbus_string_free (&config_file);
if (context == NULL)
{
_dbus_warn ("Failed to start message bus: %s\n",
error.message);
dbus_error_free (&error);
exit (1);
}
/* FIXME we have to handle this properly below _dbus_set_signal_handler (SIGHUP, signal_handler); */
_dbus_set_signal_handler (SIGTERM, signal_handler);
_dbus_verbose ("We are on D-Bus...\n");
_dbus_loop_run (bus_context_get_loop (context));
bus_context_shutdown (context);
bus_context_unref (context);
/* If we exited on TERM we just exit, if we exited on
* HUP we restart the daemon.
*/
if (got_sighup)
{
/* FIXME execv (argv) basically */
}
return 0;
}
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