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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 <lib/version.h>
#include "getopt.h"
#include "vector.h"
#include "vty.h"
#include "command.h"
#include "memory.h"
#include "memory_vty.h"
#include "thread.h"
#include "log.h"
#include "prefix.h"
#include "if.h"
#include "privs.h"
#include "sigevent.h"
#include "vrf.h"
#include "libfrr.h"
#include "ripngd/ripngd.h"
/* Configuration filename and directory. */
char config_default[] = SYSCONFDIR RIPNG_DEFAULT_CONFIG;
char *config_file = NULL;
/* RIPngd options. */
struct option longopts[] =
{
{ "daemon", no_argument, NULL, 'd'},
{ "config_file", required_argument, NULL, 'f'},
{ "pid_file", required_argument, NULL, 'i'},
{ "socket", required_argument, NULL, 'z'},
{ "dryrun", no_argument, NULL, 'C'},
{ "retain", no_argument, NULL, 'r'},
{ 0 }
};
/* ripngd privileges */
zebra_capabilities_t _caps_p [] =
{
ZCAP_NET_RAW,
ZCAP_BIND
};
struct zebra_privs_t ripngd_privs =
{
#if defined(FRR_USER)
.user = FRR_USER,
#endif
#if defined FRR_GROUP
.group = FRR_GROUP,
#endif
#ifdef VTY_GROUP
.vty_group = VTY_GROUP,
#endif
.caps_p = _caps_p,
.cap_num_p = 2,
.cap_num_i = 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 */
const char *pid_file = PATH_RIPNGD_PID;
/* SIGHUP handler. */
static void
sighup (void)
{
zlog_info ("SIGHUP received");
ripng_clean ();
ripng_reset ();
/* Reload config file. */
vty_read_config (config_file, config_default);
/* Try to return to normal operation. */
}
/* SIGINT handler. */
static void
sigint (void)
{
zlog_notice ("Terminating on signal");
if (! retain_mode)
ripng_clean ();
exit (0);
}
/* SIGUSR1 handler. */
static void
sigusr1 (void)
{
zlog_rotate (NULL);
}
struct quagga_signal_t ripng_signals[] =
{
{
.signal = SIGHUP,
.handler = &sighup,
},
{
.signal = SIGUSR1,
.handler = &sigusr1,
},
{
.signal = SIGINT,
.handler = &sigint,
},
{
.signal = SIGTERM,
.handler = &sigint,
},
};
FRR_DAEMON_INFO(ripngd, RIPNG,
.vty_port = RIPNG_VTY_PORT,
.proghelp = "Implementation of the RIPng routing protocol.",
.signals = ripng_signals,
.n_signals = array_size(ripng_signals),
.privs = &ripngd_privs,
)
/* RIPngd main routine. */
int
main (int argc, char **argv)
{
int daemon_mode = 0;
struct thread thread;
int dryrun = 0;
frr_preinit (&ripngd_di, argc, argv);
frr_opt_add ("df:i:z:rC", longopts,
" -d, --daemon Runs in daemon mode\n"
" -f, --config_file Set configuration file name\n"
" -i, --pid_file Set process identifier file name\n"
" -z, --socket Set path of zebra socket\n"
" -C, --dryrun Check configuration for validity and exit\n"
" -r, --retain When program terminates, retain added route by ripd.\n");
while (1)
{
int opt;
opt = frr_getopt (argc, argv, NULL);
if (opt == EOF)
break;
switch (opt)
{
case 0:
break;
case 'd':
daemon_mode = 1;
break;
case 'f':
config_file = optarg;
break;
case 'i':
pid_file = optarg;
break;
case 'z':
zclient_serv_path_set (optarg);
break;
case 'r':
retain_mode = 1;
break;
case 'C':
dryrun = 1;
break;
default:
frr_help_exit (1);
break;
}
}
master = frr_init ();
/* Library inits. */
vrf_init ();
/* RIPngd inits. */
ripng_init ();
zebra_init(master);
ripng_peer_init ();
/* Get configuration file. */
vty_read_config (config_file, config_default);
/* Start execution only if not in dry-run mode */
if(dryrun)
return(0);
/* Change to the daemon program. */
if (daemon_mode && daemon (0, 0) < 0)
{
zlog_err("RIPNGd daemon failed: %s", strerror(errno));
exit (1);
}
/* Create VTY socket */
frr_vty_serv (RIPNG_VTYSH_PATH);
/* Process id file create. */
pid_output (pid_file);
/* Print banner. */
zlog_notice ("RIPNGd %s starting: vty@%d", FRR_VERSION, ripngd_di.vty_port);
/* Fetch next active thread. */
while (thread_fetch (master, &thread))
thread_call (&thread);
/* Not reached. */
return 0;
}
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