blob: a512fbc2d61009c426b160a065591970e11c7037 [file] [log] [blame]
/* RIPd main routine.
* Copyright (C) 1997, 98 Kunihiro Ishiguro <kunihiro@zebra.org>
*
* 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 "thread.h"
#include "command.h"
#include "memory.h"
#include "prefix.h"
#include "filter.h"
#include "keychain.h"
#include "log.h"
#include "privs.h"
#include "sigevent.h"
#include "zclient.h"
#include "ripd/ripd.h"
/* ripd options. */
static 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'},
{ "help", no_argument, NULL, 'h'},
{ "dryrun", no_argument, NULL, 'C'},
{ "vty_addr", required_argument, NULL, 'A'},
{ "vty_port", required_argument, NULL, 'P'},
{ "retain", no_argument, NULL, 'r'},
{ "user", required_argument, NULL, 'u'},
{ "group", required_argument, NULL, 'g'},
{ "version", no_argument, NULL, 'v'},
{ 0 }
};
/* ripd privileges */
zebra_capabilities_t _caps_p [] =
{
ZCAP_NET_RAW,
ZCAP_BIND
};
struct zebra_privs_t ripd_privs =
{
#if defined(QUAGGA_USER)
.user = QUAGGA_USER,
#endif
#if defined QUAGGA_GROUP
.group = QUAGGA_GROUP,
#endif
#ifdef VTY_GROUP
.vty_group = VTY_GROUP,
#endif
.caps_p = _caps_p,
.cap_num_p = 2,
.cap_num_i = 0
};
/* Configuration file and directory. */
char config_default[] = SYSCONFDIR RIPD_DEFAULT_CONFIG;
char *config_file = NULL;
/* ripd program name */
/* Route retain mode flag. */
int retain_mode = 0;
/* RIP VTY bind address. */
char *vty_addr = NULL;
/* RIP VTY connection port. */
int vty_port = RIP_VTY_PORT;
/* Master of threads. */
struct thread_master *master;
/* Process ID saved for use by init system */
const char *pid_file = PATH_RIPD_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 RIP version 1 and 2.\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\
-z, --socket Set path of zebra socket\n\
-A, --vty_addr Set vty's bind address\n\
-P, --vty_port Set vty's port number\n\
-C, --dryrun Check configuration for validity and exit\n\
-r, --retain When program terminates, retain added route by ripd.\n\
-u, --user User to run as\n\
-g, --group Group to run as\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. */
static void
sighup (void)
{
zlog_info ("SIGHUP received");
rip_clean ();
rip_reset ();
zlog_info ("ripd restarting!");
/* Reload config file. */
vty_read_config (config_file, config_default);
/* Create VTY's socket */
vty_serv_sock (vty_addr, vty_port, RIP_VTYSH_PATH);
/* Try to return to normal operation. */
}
/* SIGINT handler. */
static void
sigint (void)
{
zlog_notice ("Terminating on signal");
if (! retain_mode)
rip_clean ();
exit (0);
}
/* SIGUSR1 handler. */
static void
sigusr1 (void)
{
zlog_rotate (NULL);
}
static struct quagga_signal_t ripd_signals[] =
{
{
.signal = SIGHUP,
.handler = &sighup,
},
{
.signal = SIGUSR1,
.handler = &sigusr1,
},
{
.signal = SIGINT,
.handler = &sigint,
},
{
.signal = SIGTERM,
.handler = &sigint,
},
};
/* Main routine of ripd. */
int
main (int argc, char **argv)
{
char *p;
int daemon_mode = 0;
int dryrun = 0;
char *progname;
struct thread thread;
/* Set umask before anything for security */
umask (0027);
/* Get program name. */
progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]);
/* First of all we need logging init. */
zlog_default = openzlog (progname, ZLOG_RIP,
LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON);
/* Command line option parse. */
while (1)
{
int opt;
opt = getopt_long (argc, argv, "df:i:z:hA:P:u:g:rvC", longopts, 0);
if (opt == EOF)
break;
switch (opt)
{
case 0:
break;
case 'd':
daemon_mode = 1;
break;
case 'f':
config_file = optarg;
break;
case 'A':
vty_addr = optarg;
break;
case 'i':
pid_file = optarg;
break;
case 'z':
zclient_serv_path_set (optarg);
break;
case 'P':
/* Deal with atoi() returning 0 on failure, and ripd not
listening on rip port... */
if (strcmp(optarg, "0") == 0)
{
vty_port = 0;
break;
}
vty_port = atoi (optarg);
if (vty_port <= 0 || vty_port > 0xffff)
vty_port = RIP_VTY_PORT;
break;
case 'r':
retain_mode = 1;
break;
case 'C':
dryrun = 1;
break;
case 'u':
ripd_privs.user = optarg;
break;
case 'g':
ripd_privs.group = optarg;
break;
case 'v':
print_version (progname);
exit (0);
break;
case 'h':
usage (progname, 0);
break;
default:
usage (progname, 1);
break;
}
}
/* Prepare master thread. */
master = thread_master_create ();
/* Library initialization. */
zprivs_init (&ripd_privs);
signal_init (master, array_size(ripd_signals), ripd_signals);
cmd_init (1);
vty_init (master);
memory_init ();
keychain_init ();
/* RIP related initialization. */
rip_init ();
rip_if_init ();
rip_zclient_init ();
rip_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("RIPd daemon failed: %s", strerror(errno));
exit (1);
}
/* Pid file create. */
pid_output (pid_file);
/* Create VTY's socket */
vty_serv_sock (vty_addr, vty_port, RIP_VTYSH_PATH);
/* Print banner. */
zlog_notice ("RIPd %s starting: vty@%d", QUAGGA_VERSION, vty_port);
/* Execute each thread. */
while (thread_fetch (master, &thread))
thread_call (&thread);
/* Not reached. */
return (0);
}