Initial revision
diff --git a/isisd/isis_main.c b/isisd/isis_main.c
new file mode 100644
index 0000000..baf5f38
--- /dev/null
+++ b/isisd/isis_main.c
@@ -0,0 +1,330 @@
+/*
+ * IS-IS Rout(e)ing protocol - isis_main.c
+ *
+ * Copyright (C) 2001,2002 Sampo Saaristo
+ * Tampere University of Technology
+ * Institute of Communications Engineering
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public Licenseas 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 <stdio.h>
+#include <zebra.h>
+#include <net/ethernet.h>
+
+#include "getopt.h"
+#include "thread.h"
+#include "log.h"
+#include "version.h"
+#include "command.h"
+#include "vty.h"
+#include "memory.h"
+#include "stream.h"
+#include "if.h"
+
+#include "isisd/dict.h"
+#include "include-netbsd/iso.h"
+#include "isisd/isis_constants.h"
+#include "isisd/isis_common.h"
+#include "isisd/isis_flags.h"
+#include "isisd/isis_circuit.h"
+#include "isisd/isisd.h"
+#include "isisd/isis_dynhn.h"
+
+/* Default configuration file name */
+#define ISISD_DEFAULT_CONFIG "isisd.conf"
+/* Default vty port */
+#define ISISD_VTY_PORT 2607
+
+/* isisd options */
+struct option longopts[] =
+{
+ { "daemon", no_argument, NULL, 'd'},
+ { "config_file", required_argument, NULL, 'f'},
+ { "vty_port", required_argument, NULL, 'P'},
+ { "version", no_argument, NULL, 'v'},
+ { "help", no_argument, NULL, 'h'},
+ { 0 }
+};
+
+/* Configuration file and directory. */
+char config_current[] = ISISD_DEFAULT_CONFIG;
+char config_default[] = SYSCONFDIR ISISD_DEFAULT_CONFIG;
+char *config_file = NULL;
+
+/* isisd program name. */
+char *progname;
+
+int daemon_mode = 0;
+
+/* Master of threads. */
+struct thread_master *master;
+
+
+/* for reload */
+char _cwd[64];
+char _progpath[64];
+int _argc;
+char **_argv;
+char **_envp;
+
+
+/* Help information display. */
+static void
+usage (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 IS-IS routing\n\n\
+-d, --daemon Runs in daemon mode\n\
+-f, --config_file Set configuration file name\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 sambo@cs.tut.fi\n", progname);
+ }
+
+ exit (status);
+}
+
+
+void
+reload ()
+{
+ zlog_info ("Reload");
+ /* FIXME: Clean up func call here */
+ vty_finish ();
+ execve (_progpath, _argv, _envp);
+}
+
+void
+terminate (int i)
+{
+ exit (i);
+}
+
+/*
+ * Signal handlers
+ */
+void
+sighup (int sig)
+{
+ zlog_info ("SIGHUP received");
+ reload ();
+
+ return;
+}
+
+void
+sigint (int sig)
+{
+ zlog_info ("SIGINT received");
+ terminate (0);
+
+ return;
+}
+
+void
+sigterm (int sig)
+{
+ zlog_info ("SIGTERM received");
+ terminate (0);
+}
+
+void
+sigusr1 (int sig)
+{
+ zlog_info ("SIGUSR1 received");
+ zlog_rotate (NULL);
+}
+
+/*
+ * Signal 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);
+}
+
+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 isisd. Parse arguments and handle IS-IS state machine.
+ */
+int
+main (int argc, char **argv, char **envp)
+{
+ char *p;
+ int opt, vty_port = ISISD_VTY_PORT;
+ struct thread thread;
+ char *config_file = NULL;
+ char *vty_addr = NULL;
+
+ /* Get the programname without the preceding path. */
+ progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]);
+
+ zlog_default = openzlog (progname, ZLOG_NOLOG, ZLOG_ISIS,
+ LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON);
+
+
+ /* 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:hAp: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 'P':
+ vty_port = atoi (optarg);
+ break;
+ case 'v':
+ printf("ISISd version %s\n", ISISD_VERSION);
+ printf("Copyright (c) 2001-2002 Sampo Saaristo,"
+ " Ofer Wald and Hannes Gredler\n");
+ print_version ("Zebra");
+ exit (0);
+ break;
+ case 'h':
+ usage (0);
+ break;
+ default:
+ usage (1);
+ break;
+ }
+ }
+
+ /* thread master */
+ master = thread_master_create ();
+
+ /* random seed from time */
+ srand(time(NULL));
+
+ /*
+ * initializations
+ */
+ signal_init ();
+ cmd_init (1);
+ vty_init ();
+ memory_init ();
+ isis_init ();
+ dyn_cache_init ();
+ sort_node ();
+
+ /* parse config file */
+ /* this is needed three times! because we have interfaces before the areas */
+ vty_read_config (config_file, config_current, config_default);
+#if 0
+ vty_read_config (config_file, config_current, config_default);
+ vty_read_config (config_file, config_current, config_default);
+#endif
+ /* demonize */
+ if (daemon_mode)
+ daemon (0, 0);
+
+ /* Problems with the build env ?*/
+#ifndef PATH_ISISD_PID
+#define PATH_ISISD_PID "/var/run/isisd.pid"
+#endif
+ /* Process ID file creation. */
+ pid_output (PATH_ISISD_PID);
+
+ /* Make isis vty socket. */
+ vty_serv_sock (vty_addr, vty_port ? vty_port : ISISD_VTY_PORT,
+ ISIS_VTYSH_PATH);
+
+ /* Print banner. */
+ zlog_info ("ISISd %s starting: vty@%d", ZEBRA_VERSION, vty_port);
+#ifdef HAVE_IPV6
+ zlog_info ("IPv6 enabled");
+#endif
+ /* Start finite state machine. */
+ while (thread_fetch (master, &thread))
+ thread_call (&thread);
+
+ /* Not reached. */
+ exit (0);
+}
+
+
+
+
+
+
+
+
+
+