From 718e3744195351130f4ce7dbe0613f4b3e23df93 Mon Sep 17 00:00:00 2001 From: paul Date: Fri, 13 Dec 2002 20:15:29 +0000 Subject: Initial revision --- ospf6d/ospf6_main.c | 326 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 326 insertions(+) create mode 100644 ospf6d/ospf6_main.c (limited to 'ospf6d/ospf6_main.c') diff --git a/ospf6d/ospf6_main.c b/ospf6d/ospf6_main.c new file mode 100644 index 00000000..5ab517f3 --- /dev/null +++ b/ospf6d/ospf6_main.c @@ -0,0 +1,326 @@ +/* + * Copyright (C) 1999 Yasuhiro Ohara + * + * 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 +#include "getopt.h" +#include "thread.h" +#include "log.h" +#include "version.h" +#include "command.h" +#include "vty.h" +#include "memory.h" + +#include "ospf6d.h" +#include "ospf6_network.h" + +void ospf6_init (); +void ospf6_terminate (); +void nexthop_init (); +int ospf6_receive (struct thread *); + +extern int ospf6_sock; + +/* Default configuration file name for ospf6d. */ +#define OSPF6_DEFAULT_CONFIG "ospf6d.conf" +/* Default port values. */ +#define OSPF6_VTY_PORT 2606 + +/* ospf6d options, we use GNU getopt library. */ +struct option longopts[] = +{ + { "daemon", no_argument, NULL, 'd'}, + { "config_file", required_argument, NULL, 'f'}, + { "pid_file", required_argument, NULL, 'i'}, + { "vty_addr", required_argument, NULL, 'A'}, + { "vty_port", required_argument, NULL, 'P'}, + { "version", no_argument, NULL, 'v'}, + { "help", no_argument, NULL, 'h'}, + { 0 } +}; + +/* Configuration file and directory. */ +char config_current[] = OSPF6_DEFAULT_CONFIG; +char config_default[] = SYSCONFDIR OSPF6_DEFAULT_CONFIG; + +/* ospf6d program name. */ + +/* is daemon? */ +int daemon_mode = 0; + +/* Master of threads. */ +struct thread_master *master; + +/* Process ID saved for use by init system */ +char *pid_file = PATH_OSPF6D_PID; + +/* for reload */ +char _cwd[64]; +char _progpath[64]; +int _argc; +char **_argv; +char **_envp; + +/* 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\n\ +Daemon which manages OSPF version 3.\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\ +-A, --vty_addr Set vty's bind address\n\ +-P, --vty_port Set vty's port number\n\ +-v, --version Print program version\n\ +-h, --help Display this help and exit\n\ +\n\ +Report bugs to yasu@sfc.wide.ad.jp\n", progname); + } + + exit (status); +} + + +void +_reload () +{ + zlog_notice ("OSPF6d (Zebra-%s ospf6d-%s) reloaded", + ZEBRA_VERSION, OSPF6_DAEMON_VERSION); + ospf6_zebra_finish (); + vty_finish (); + execve (_progpath, _argv, _envp); +} + +void +terminate (int i) +{ + ospf6_delete (ospf6); + unlink (PATH_OSPF6D_PID); + zlog_notice ("OSPF6d (Zebra-%s ospf6d-%s) terminated", + ZEBRA_VERSION, OSPF6_DAEMON_VERSION); + exit (i); +} + +/* SIGHUP handler. */ +void +sighup (int sig) +{ + zlog_info ("SIGHUP received"); + _reload (); +} + +/* SIGINT handler. */ +void +sigint (int sig) +{ + zlog_info ("SIGINT received"); + terminate (0); +} + +/* SIGTERM handler. */ +void +sigterm (int sig) +{ + zlog_info ("SIGTERM received"); + terminate (0); +} + +/* SIGUSR1 handler. */ +void +sigusr1 (int sig) +{ + zlog_info ("SIGUSR1 received"); + 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, sigterm); + signal_set (SIGPIPE, SIG_IGN); +#ifdef SIGTSTP + signal_set (SIGTSTP, SIG_IGN); +#endif +#ifdef SIGTTIN + signal_set (SIGTTIN, SIG_IGN); +#endif +#ifdef SIGTTOU + signal_set (SIGTTOU, SIG_IGN); +#endif + signal_set (SIGUSR1, sigusr1); +} + +/* Main routine of ospf6d. Treatment of argument and start ospf finite + state machine is handled here. */ +int +main (int argc, char *argv[], char *envp[]) +{ + char *p; + int opt; + char *vty_addr = NULL; + int vty_port = 0; + char *config_file = NULL; + char *progname; + struct thread thread; + int flag; + + /* Set umask before anything for security */ + umask (0027); + + /* Preserve name of myself. */ + progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]); + + /* for reload */ + _argc = argc; + _argv = argv; + _envp = envp; + getcwd (_cwd, sizeof (_cwd)); + if (*argv[0] == '.') + snprintf (_progpath, sizeof (_progpath), "%s/%s", _cwd, _argv[0]); + else + snprintf (_progpath, sizeof (_progpath), "%s", argv[0]); + + /* Command line argument treatment. */ + while (1) + { + opt = getopt_long (argc, argv, "df:hp:A:P:v", 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 'P': + vty_port = atoi (optarg); + break; + case 'v': + print_version (progname); + exit (0); + break; + case 'h': + usage (progname, 0); + break; + default: + usage (progname, 1); + break; + } + } + + /* thread master */ + master = thread_master_create (); + + /* Initializations. */ + if (! daemon_mode) + flag = ZLOG_STDOUT; + else + flag = 0; + + zlog_default = openzlog (progname, flag, ZLOG_OSPF6, + LOG_CONS|LOG_NDELAY|LOG_PERROR|LOG_PID, + LOG_DAEMON); + signal_init (); + cmd_init (1); + vty_init (); + ospf6_init (); + memory_init (); + sort_node (); + + /* parse config file */ + vty_read_config (config_file, config_current, config_default); + + if (daemon_mode) + daemon (0, 0); + + /* pid file create */ +#if 0 + pid_output_lock (pid_file); +#else + pid_output (pid_file); +#endif + + /* Make ospf protocol socket. */ + ospf6_serv_sock (); + thread_add_read (master, ospf6_receive, NULL, ospf6_sock); + + /* Make ospf vty socket. */ + vty_serv_sock (vty_addr, + vty_port ? vty_port : OSPF6_VTY_PORT, OSPF6_VTYSH_PATH); + + /* Print start message */ + zlog_notice ("OSPF6d (Zebra-%s ospf6d-%s) starts", + ZEBRA_VERSION, OSPF6_DAEMON_VERSION); + + /* Start finite state machine, here we go! */ + while (thread_fetch (master, &thread)) + thread_call (&thread); + + /* Log in case thread failed */ + zlog_warn ("Thread failed"); + terminate (0); + + /* Not reached. */ + exit (0); +} + -- cgit v1.2.1