summaryrefslogtreecommitdiffstats
path: root/ospf6d/ospf6_main.c
blob: 4f6d9e51400824ee661df575af4349bb9ba6b1f2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
/*
 * 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 <zebra.h>
#include <lib/version.h>

#include "getopt.h"
#include "thread.h"
#include "log.h"
#include "command.h"
#include "vty.h"
#include "memory.h"
#include "if.h"
#include "filter.h"
#include "prefix.h"
#include "plist.h"
#include "privs.h"
#include "sigevent.h"
#include "zclient.h"

#include "ospf6d.h"
#include "ospf6_top.h"
#include "ospf6_message.h"
#include "ospf6_asbr.h"
#include "ospf6_lsa.h"
#include "ospf6_interface.h"
#include "ospf6_zebra.h"

/* Default configuration file name for ospf6d. */
#define OSPF6_DEFAULT_CONFIG       "ospf6d.conf"

/* Default port values. */
#define OSPF6_VTY_PORT             2606

/* ospf6d privileges */
zebra_capabilities_t _caps_p [] =
{
  ZCAP_NET_RAW,
  ZCAP_BIND
};

struct zebra_privs_t ospf6d_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
};

/* 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'},
  { "socket",      required_argument, NULL, 'z'},
  { "vty_addr",    required_argument, NULL, 'A'},
  { "vty_port",    required_argument, NULL, 'P'},
  { "user",        required_argument, NULL, 'u'},
  { "group",       required_argument, NULL, 'g'},
  { "version",     no_argument,       NULL, 'v'},
  { "dryrun",      no_argument,       NULL, 'C'},
  { "help",        no_argument,       NULL, 'h'},
  { 0 }
};

/* Configuration file and directory. */
char config_default[] = SYSCONFDIR OSPF6_DEFAULT_CONFIG;

/* ospf6d program name. */
char *progname;

/* is daemon? */
int daemon_mode = 0;

/* Master of threads. */
struct thread_master *master;

/* Process ID saved for use by init system */
const char *pid_file = PATH_OSPF6D_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\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\
-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\
-u, --user         User to run as\n\
-g, --group        Group to run as\n\
-v, --version      Print program version\n\
-C, --dryrun       Check configuration for validity and exit\n\
-h, --help         Display this help and exit\n\
\n\
Report bugs to %s\n", progname, ZEBRA_BUG_ADDRESS);
    }

  exit (status);
}

static void __attribute__ ((noreturn))
ospf6_exit (int status)
{
  struct listnode *node;
  struct interface *ifp;

  if (ospf6)
    ospf6_delete (ospf6);

  for (ALL_LIST_ELEMENTS_RO(iflist, node, ifp))
    if (ifp->info != NULL)
      ospf6_interface_delete(ifp->info);

  ospf6_message_terminate ();
  ospf6_asbr_terminate ();
  ospf6_lsa_terminate ();

  if_terminate ();
  vty_terminate ();
  cmd_terminate ();

  if (zclient)
    zclient_free (zclient);

  if (master)
    thread_master_free (master);

  if (zlog_default)
    closezlog (zlog_default);

  exit (status);
}

/* SIGHUP handler. */
static void 
sighup (void)
{
  zlog_info ("SIGHUP received");
}

/* SIGINT handler. */
static void
sigint (void)
{
  zlog_notice ("Terminating on signal SIGINT");
  ospf6_exit (0);
}

/* SIGTERM handler. */
static void
sigterm (void)
{
  zlog_notice ("Terminating on signal SIGTERM");
  ospf6_clean();
  ospf6_exit (0);
}

/* SIGUSR1 handler. */
static void
sigusr1 (void)
{
  zlog_info ("SIGUSR1 received");
  zlog_rotate (NULL);
}

struct quagga_signal_t ospf6_signals[] =
{
  {
    .signal = SIGHUP,
    .handler = &sighup,
  },
  {
    .signal = SIGINT,
    .handler = &sigint,
  },
  {
    .signal = SIGTERM,
    .handler = &sigterm,
  },
  {
    .signal = SIGUSR1,
    .handler = &sigusr1,
  },
};

/* Main routine of ospf6d. Treatment of argument and starting 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;
  struct thread thread;
  int dryrun = 0;

  /* Set umask before anything for security */
  umask (0027);

  /* Preserve name of myself. */
  progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]);

  /* Command line argument treatment. */
  while (1) 
    {
      opt = getopt_long (argc, argv, "df:i:z:hp:A:P:u:g:vC", 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 ospf6d not
             listening on ospf6d port... */
          if (strcmp(optarg, "0") == 0)
            {
              vty_port = 0;
              break;
            }
          vty_port = atoi (optarg);
          if (vty_port <= 0 || vty_port > 0xffff)
            vty_port = OSPF6_VTY_PORT;
          break;
        case 'u':
          ospf6d_privs.user = optarg;
          break;
	case 'g':
	  ospf6d_privs.group = optarg;
	  break;
        case 'v':
          print_version (progname);
          exit (0);
          break;
	case 'C':
	  dryrun = 1;
	  break;
        case 'h':
          usage (progname, 0);
          break;
        default:
          usage (progname, 1);
          break;
        }
    }

  if (geteuid () != 0)
    {
      errno = EPERM;
      perror (progname);
      exit (1);
    }

  /* thread master */
  master = thread_master_create ();

  /* Initializations. */
  zlog_default = openzlog (progname, ZLOG_OSPF6,
                           LOG_CONS|LOG_NDELAY|LOG_PID,
                           LOG_DAEMON);
  zprivs_init (&ospf6d_privs);
  /* initialize zebra libraries */
  signal_init (master, array_size(ospf6_signals), ospf6_signals);
  cmd_init (1);
  vty_init (master);
  memory_init ();
  if_init ();
  access_list_init ();
  prefix_list_init ();

  /* initialize ospf6 */
  ospf6_init ();

  /* parse config file */
  vty_read_config (config_file, config_default);

  /* Start execution only if not in dry-run mode */
  if (dryrun)
    return(0);
  
  if (daemon_mode && daemon (0, 0) < 0)
    {
      zlog_err("OSPF6d daemon failed: %s", strerror(errno));
      exit (1);
    }

  /* pid file create */
  pid_output (pid_file);

  /* Make ospf6 vty socket. */
  if (!vty_port)
    vty_port = OSPF6_VTY_PORT;
  vty_serv_sock (vty_addr, vty_port, OSPF6_VTYSH_PATH);

  /* Print start message */
  zlog_notice ("OSPF6d (Quagga-%s ospf6d-%s) starts: vty@%d",
               QUAGGA_VERSION, OSPF6_DAEMON_VERSION,vty_port);

  /* Start finite state machine, here we go! */
  while (thread_fetch (master, &thread))
    thread_call (&thread);

  /* Log in case thread failed */
  zlog_warn ("Thread failed");

  /* Not reached. */
  ospf6_exit (0);
}