Annotation of embedaddon/quagga/ospfd/ospf_main.c, revision 1.1.1.1
1.1 misho 1: /*
2: * OSPFd main routine.
3: * Copyright (C) 1998, 99 Kunihiro Ishiguro, Toshiaki Takada
4: *
5: * This file is part of GNU Zebra.
6: *
7: * GNU Zebra is free software; you can redistribute it and/or modify it
8: * under the terms of the GNU General Public License as published by the
9: * Free Software Foundation; either version 2, or (at your option) any
10: * later version.
11: *
12: * GNU Zebra is distributed in the hope that it will be useful, but
13: * WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * General Public License for more details.
16: *
17: * You should have received a copy of the GNU General Public License
18: * along with GNU Zebra; see the file COPYING. If not, write to the Free
19: * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20: * 02111-1307, USA.
21: */
22:
23: #include <zebra.h>
24:
25: #include <lib/version.h>
26: #include "getopt.h"
27: #include "thread.h"
28: #include "prefix.h"
29: #include "linklist.h"
30: #include "if.h"
31: #include "vector.h"
32: #include "vty.h"
33: #include "command.h"
34: #include "filter.h"
35: #include "plist.h"
36: #include "stream.h"
37: #include "log.h"
38: #include "memory.h"
39: #include "privs.h"
40: #include "sigevent.h"
41:
42: #include "ospfd/ospfd.h"
43: #include "ospfd/ospf_interface.h"
44: #include "ospfd/ospf_asbr.h"
45: #include "ospfd/ospf_lsa.h"
46: #include "ospfd/ospf_lsdb.h"
47: #include "ospfd/ospf_neighbor.h"
48: #include "ospfd/ospf_dump.h"
49: #include "ospfd/ospf_zebra.h"
50: #include "ospfd/ospf_vty.h"
51:
52: /* ospfd privileges */
53: zebra_capabilities_t _caps_p [] =
54: {
55: ZCAP_NET_RAW,
56: ZCAP_BIND,
57: ZCAP_NET_ADMIN,
58: };
59:
60: struct zebra_privs_t ospfd_privs =
61: {
62: #if defined(QUAGGA_USER) && defined(QUAGGA_GROUP)
63: .user = QUAGGA_USER,
64: .group = QUAGGA_GROUP,
65: #endif
66: #if defined(VTY_GROUP)
67: .vty_group = VTY_GROUP,
68: #endif
69: .caps_p = _caps_p,
70: .cap_num_p = sizeof(_caps_p)/sizeof(_caps_p[0]),
71: .cap_num_i = 0
72: };
73:
74: /* Configuration filename and directory. */
75: char config_default[] = SYSCONFDIR OSPF_DEFAULT_CONFIG;
76:
77: /* OSPFd options. */
78: struct option longopts[] =
79: {
80: { "daemon", no_argument, NULL, 'd'},
81: { "config_file", required_argument, NULL, 'f'},
82: { "pid_file", required_argument, NULL, 'i'},
83: { "dryrun", no_argument, NULL, 'C'},
84: { "help", no_argument, NULL, 'h'},
85: { "vty_addr", required_argument, NULL, 'A'},
86: { "vty_port", required_argument, NULL, 'P'},
87: { "user", required_argument, NULL, 'u'},
88: { "group", required_argument, NULL, 'g'},
89: { "apiserver", no_argument, NULL, 'a'},
90: { "version", no_argument, NULL, 'v'},
91: { 0 }
92: };
93:
94: /* OSPFd program name */
95:
96: /* Master of threads. */
97: struct thread_master *master;
98:
99: /* Process ID saved for use by init system */
100: const char *pid_file = PATH_OSPFD_PID;
101:
102: #ifdef SUPPORT_OSPF_API
103: extern int ospf_apiserver_enable;
104: #endif /* SUPPORT_OSPF_API */
105:
106: /* Help information display. */
107: static void __attribute__ ((noreturn))
108: usage (char *progname, int status)
109: {
110: if (status != 0)
111: fprintf (stderr, "Try `%s --help' for more information.\n", progname);
112: else
113: {
114: printf ("Usage : %s [OPTION...]\n\
115: Daemon which manages OSPF.\n\n\
116: -d, --daemon Runs in daemon mode\n\
117: -f, --config_file Set configuration file name\n\
118: -i, --pid_file Set process identifier file name\n\
119: -A, --vty_addr Set vty's bind address\n\
120: -P, --vty_port Set vty's port number\n\
121: -u, --user User to run as\n\
122: -g, --group Group to run as\n\
123: -a. --apiserver Enable OSPF apiserver\n\
124: -v, --version Print program version\n\
125: -C, --dryrun Check configuration for validity and exit\n\
126: -h, --help Display this help and exit\n\
127: \n\
128: Report bugs to %s\n", progname, ZEBRA_BUG_ADDRESS);
129: }
130: exit (status);
131: }
132:
133: /* SIGHUP handler. */
134: static void
135: sighup (void)
136: {
137: zlog (NULL, LOG_INFO, "SIGHUP received");
138: }
139:
140: /* SIGINT / SIGTERM handler. */
141: static void
142: sigint (void)
143: {
144: zlog_notice ("Terminating on signal");
145: ospf_terminate ();
146: }
147:
148: /* SIGUSR1 handler. */
149: static void
150: sigusr1 (void)
151: {
152: zlog_rotate (NULL);
153: }
154:
155: struct quagga_signal_t ospf_signals[] =
156: {
157: {
158: .signal = SIGHUP,
159: .handler = &sighup,
160: },
161: {
162: .signal = SIGUSR1,
163: .handler = &sigusr1,
164: },
165: {
166: .signal = SIGINT,
167: .handler = &sigint,
168: },
169: {
170: .signal = SIGTERM,
171: .handler = &sigint,
172: },
173: };
174:
175: /* OSPFd main routine. */
176: int
177: main (int argc, char **argv)
178: {
179: char *p;
180: char *vty_addr = NULL;
181: int vty_port = OSPF_VTY_PORT;
182: int daemon_mode = 0;
183: char *config_file = NULL;
184: char *progname;
185: struct thread thread;
186: int dryrun = 0;
187:
188: /* Set umask before anything for security */
189: umask (0027);
190:
191: /* get program name */
192: progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]);
193:
194: /* Invoked by a priviledged user? -- endo. */
195: if (geteuid () != 0)
196: {
197: errno = EPERM;
198: perror (progname);
199: exit (1);
200: }
201:
202: zlog_default = openzlog (progname, ZLOG_OSPF,
203: LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON);
204:
205: /* OSPF master init. */
206: ospf_master_init ();
207:
208: #ifdef SUPPORT_OSPF_API
209: /* OSPF apiserver is disabled by default. */
210: ospf_apiserver_enable = 0;
211: #endif /* SUPPORT_OSPF_API */
212:
213: while (1)
214: {
215: int opt;
216:
217: opt = getopt_long (argc, argv, "df:i:hA:P:u:g:avC", longopts, 0);
218:
219: if (opt == EOF)
220: break;
221:
222: switch (opt)
223: {
224: case 0:
225: break;
226: case 'd':
227: daemon_mode = 1;
228: break;
229: case 'f':
230: config_file = optarg;
231: break;
232: case 'A':
233: vty_addr = optarg;
234: break;
235: case 'i':
236: pid_file = optarg;
237: break;
238: case 'P':
239: /* Deal with atoi() returning 0 on failure, and ospfd not
240: listening on ospfd port... */
241: if (strcmp(optarg, "0") == 0)
242: {
243: vty_port = 0;
244: break;
245: }
246: vty_port = atoi (optarg);
247: if (vty_port <= 0 || vty_port > 0xffff)
248: vty_port = OSPF_VTY_PORT;
249: break;
250: case 'u':
251: ospfd_privs.user = optarg;
252: break;
253: case 'g':
254: ospfd_privs.group = optarg;
255: break;
256: #ifdef SUPPORT_OSPF_API
257: case 'a':
258: ospf_apiserver_enable = 1;
259: break;
260: #endif /* SUPPORT_OSPF_API */
261: case 'v':
262: print_version (progname);
263: exit (0);
264: break;
265: case 'C':
266: dryrun = 1;
267: break;
268: case 'h':
269: usage (progname, 0);
270: break;
271: default:
272: usage (progname, 1);
273: break;
274: }
275: }
276:
277: /* Initializations. */
278: master = om->master;
279:
280: /* Library inits. */
281: zprivs_init (&ospfd_privs);
282: signal_init (master, Q_SIGC(ospf_signals), ospf_signals);
283: cmd_init (1);
284: debug_init ();
285: vty_init (master);
286: memory_init ();
287:
288: access_list_init ();
289: prefix_list_init ();
290:
291: /* OSPFd inits. */
292: ospf_if_init ();
293: ospf_zebra_init ();
294:
295: /* OSPF vty inits. */
296: ospf_vty_init ();
297: ospf_vty_show_init ();
298:
299: ospf_route_map_init ();
300: #ifdef HAVE_SNMP
301: ospf_snmp_init ();
302: #endif /* HAVE_SNMP */
303: #ifdef HAVE_OPAQUE_LSA
304: ospf_opaque_init ();
305: #endif /* HAVE_OPAQUE_LSA */
306:
307: sort_node ();
308:
309: /* Get configuration file. */
310: vty_read_config (config_file, config_default);
311:
312: /* Start execution only if not in dry-run mode */
313: if (dryrun)
314: return(0);
315:
316: /* Change to the daemon program. */
317: if (daemon_mode && daemon (0, 0) < 0)
318: {
319: zlog_err("OSPFd daemon failed: %s", strerror(errno));
320: exit (1);
321: }
322:
323: /* Process id file create. */
324: pid_output (pid_file);
325:
326: /* Create VTY socket */
327: vty_serv_sock (vty_addr, vty_port, OSPF_VTYSH_PATH);
328:
329: /* Print banner. */
330: zlog_notice ("OSPFd %s starting: vty@%d", QUAGGA_VERSION, vty_port);
331:
332: /* Fetch next active thread. */
333: while (thread_fetch (master, &thread))
334: thread_call (&thread);
335:
336: /* Not reached. */
337: return (0);
338: }
339:
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