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/*
* RIPngd main routine.
* Copyright (C) 1998, 1999 Kunihiro Ishiguro
*
* This file is part of GNU Zebra.
*
* GNU Zebra 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.
*
* GNU Zebra 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 GNU Zebra; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <zebra.h>
#include "version.h"
#include "getopt.h"
#include "vector.h"
#include "vty.h"
#include "command.h"
#include "thread.h"
#include "log.h"
#include "prefix.h"
#include "if.h"
#include "ripngd/ripngd.h"
/* Configuration filename and directory. */
char config_current[] = RIPNG_DEFAULT_CONFIG;
char config_default[] = SYSCONFDIR RIPNG_DEFAULT_CONFIG;
/* RIPngd options. */
struct option longopts[] =
{
{ "daemon", no_argument, NULL, 'd'},
{ "config_file", required_argument, NULL, 'f'},
{ "pid_file", required_argument, NULL, 'i'},
{ "log_mode", no_argument, NULL, 'l'},
{ "help", no_argument, NULL, 'h'},
{ "vty_addr", required_argument, NULL, 'A'},
{ "vty_port", required_argument, NULL, 'P'},
{ "retain", no_argument, NULL, 'r'},
{ "version", no_argument, NULL, 'v'},
{ 0 }
};
/* RIPngd program name */
/* Route retain mode flag. */
int retain_mode = 0;
/* Master of threads. */
struct thread_master *master;
/* Process ID saved for use by init system */
char *pid_file = PATH_RIPNGD_PID;
/* Help information display. */
static void
usage (char *progname, int status)
{
if (status != 0)
fprintf (stderr, "Try `%s --help' for more information.\n", progname);
else
{
printf ("Usage : %s [OPTION...]\n\
Daemon which manages RIPng.\n\n\
-d, --daemon Runs in daemon mode\n\
-f, --config_file Set configuration file name\n\
-i, --pid_file Set process identifier file name\n\
-l. --log_mode Set verbose log mode flag\n\
-A, --vty_addr Set vty's bind address\n\
-P, --vty_port Set vty's port number\n\
-r, --retain When program terminates, retain added route by ripngd.\n\
-v, --version Print program version\n\
-h, --help Display this help and exit\n\
\n\
Report bugs to %s\n", progname, ZEBRA_BUG_ADDRESS);
}
exit (status);
}
/* SIGHUP handler. */
void
sighup (int sig)
{
zlog (NULL, LOG_INFO, "SIGHUP received");
}
/* SIGINT handler. */
void
sigint (int sig)
{
zlog (NULL, LOG_INFO, "Terminating on signal");
if (! retain_mode)
ripng_terminate ();
exit (0);
}
/* SIGUSR1 handler. */
void
sigusr1 (int sig)
{
zlog_rotate (NULL);
}
/* Signale wrapper. */
RETSIGTYPE *
signal_set (int signo, void (*func)(int))
{
int ret;
struct sigaction sig;
struct sigaction osig;
sig.sa_handler = func;
sigemptyset (&sig.sa_mask);
sig.sa_flags = 0;
#ifdef SA_RESTART
sig.sa_flags |= SA_RESTART;
#endif /* SA_RESTART */
ret = sigaction (signo, &sig, &osig);
if (ret < 0)
return (SIG_ERR);
else
return (osig.sa_handler);
}
/* Initialization of signal handles. */
void
signal_init ()
{
signal_set (SIGHUP, sighup);
signal_set (SIGINT, sigint);
signal_set (SIGTERM, sigint);
signal_set (SIGPIPE, SIG_IGN);
signal_set (SIGUSR1, sigusr1);
}
/* RIPngd main routine. */
int
main (int argc, char **argv)
{
char *p;
char *vty_addr = NULL;
int vty_port = 0;
int daemon_mode = 0;
char *config_file = NULL;
char *progname;
struct thread thread;
/* Set umask before anything for security */
umask (0027);
/* get program name */
progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]);
zlog_default = openzlog(progname, ZLOG_NOLOG, ZLOG_RIPNG,
LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON);
while (1)
{
int opt;
opt = getopt_long (argc, argv, "dlf:hA:P:v", longopts, 0);
if (opt == EOF)
break;
switch (opt)
{
case 0:
break;
case 'd':
daemon_mode = 1;
break;
case 'l':
/* log_mode = 1; */
break;
case 'f':
config_file = optarg;
break;
case 'A':
vty_addr = optarg;
break;
case 'i':
pid_file = optarg;
break;
case 'P':
vty_port = atoi (optarg);
break;
case 'r':
retain_mode = 1;
break;
case 'v':
print_version (progname);
exit (0);
break;
case 'h':
usage (progname, 0);
break;
default:
usage (progname, 1);
break;
}
}
master = thread_master_create ();
/* Library inits. */
signal_init ();
cmd_init (1);
vty_init ();
/* RIPngd inits. */
ripng_init ();
zebra_init ();
sort_node ();
/* Get configuration file. */
vty_read_config (config_file, config_current, config_default);
/* Change to the daemon program. */
if (daemon_mode)
daemon (0, 0);
/* Create VTY socket */
vty_serv_sock (vty_addr,
vty_port ? vty_port : RIPNG_VTY_PORT, RIPNG_VTYSH_PATH);
/* Process id file create. */
pid_output (pid_file);
/* Fetch next active thread. */
while (thread_fetch (master, &thread))
thread_call (&thread);
/* Not reached. */
exit (0);
}
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