Annotation of embedaddon/quagga/ripd/rip_main.c, revision 1.1.1.3
1.1 misho 1: /* RIPd main routine.
2: * Copyright (C) 1997, 98 Kunihiro Ishiguro <kunihiro@zebra.org>
3: *
4: * This file is part of GNU Zebra.
5: *
6: * GNU Zebra is free software; you can redistribute it and/or modify it
7: * under the terms of the GNU General Public License as published by the
8: * Free Software Foundation; either version 2, or (at your option) any
9: * later version.
10: *
11: * GNU Zebra is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * General Public License for more details.
15: *
16: * You should have received a copy of the GNU General Public License
17: * along with GNU Zebra; see the file COPYING. If not, write to the Free
18: * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
19: * 02111-1307, USA.
20: */
21:
22: #include <zebra.h>
23:
24: #include <lib/version.h>
25: #include "getopt.h"
26: #include "thread.h"
27: #include "command.h"
28: #include "memory.h"
29: #include "prefix.h"
30: #include "filter.h"
31: #include "keychain.h"
32: #include "log.h"
33: #include "privs.h"
34: #include "sigevent.h"
1.1.1.2 misho 35: #include "zclient.h"
1.1 misho 36:
37: #include "ripd/ripd.h"
38:
39: /* ripd options. */
40: static struct option longopts[] =
41: {
42: { "daemon", no_argument, NULL, 'd'},
43: { "config_file", required_argument, NULL, 'f'},
44: { "pid_file", required_argument, NULL, 'i'},
1.1.1.2 misho 45: { "socket", required_argument, NULL, 'z'},
1.1 misho 46: { "help", no_argument, NULL, 'h'},
47: { "dryrun", no_argument, NULL, 'C'},
48: { "vty_addr", required_argument, NULL, 'A'},
49: { "vty_port", required_argument, NULL, 'P'},
50: { "retain", no_argument, NULL, 'r'},
51: { "user", required_argument, NULL, 'u'},
52: { "group", required_argument, NULL, 'g'},
53: { "version", no_argument, NULL, 'v'},
54: { 0 }
55: };
56:
57: /* ripd privileges */
58: zebra_capabilities_t _caps_p [] =
59: {
60: ZCAP_NET_RAW,
61: ZCAP_BIND
62: };
63:
64: struct zebra_privs_t ripd_privs =
65: {
66: #if defined(QUAGGA_USER)
67: .user = QUAGGA_USER,
68: #endif
69: #if defined QUAGGA_GROUP
70: .group = QUAGGA_GROUP,
71: #endif
72: #ifdef VTY_GROUP
73: .vty_group = VTY_GROUP,
74: #endif
75: .caps_p = _caps_p,
76: .cap_num_p = 2,
77: .cap_num_i = 0
78: };
79:
80: /* Configuration file and directory. */
81: char config_default[] = SYSCONFDIR RIPD_DEFAULT_CONFIG;
82: char *config_file = NULL;
83:
84: /* ripd program name */
85:
86: /* Route retain mode flag. */
87: int retain_mode = 0;
88:
89: /* RIP VTY bind address. */
90: char *vty_addr = NULL;
91:
92: /* RIP VTY connection port. */
93: int vty_port = RIP_VTY_PORT;
94:
95: /* Master of threads. */
96: struct thread_master *master;
97:
98: /* Process ID saved for use by init system */
99: const char *pid_file = PATH_RIPD_PID;
100:
101: /* Help information display. */
102: static void
103: usage (char *progname, int status)
104: {
105: if (status != 0)
106: fprintf (stderr, "Try `%s --help' for more information.\n", progname);
107: else
108: {
109: printf ("Usage : %s [OPTION...]\n\
110: Daemon which manages RIP version 1 and 2.\n\n\
111: -d, --daemon Runs in daemon mode\n\
112: -f, --config_file Set configuration file name\n\
113: -i, --pid_file Set process identifier file name\n\
1.1.1.2 misho 114: -z, --socket Set path of zebra socket\n\
1.1 misho 115: -A, --vty_addr Set vty's bind address\n\
116: -P, --vty_port Set vty's port number\n\
117: -C, --dryrun Check configuration for validity and exit\n\
118: -r, --retain When program terminates, retain added route by ripd.\n\
119: -u, --user User to run as\n\
120: -g, --group Group to run as\n\
121: -v, --version Print program version\n\
122: -h, --help Display this help and exit\n\
123: \n\
124: Report bugs to %s\n", progname, ZEBRA_BUG_ADDRESS);
125: }
126:
127: exit (status);
128: }
129:
130: /* SIGHUP handler. */
131: static void
132: sighup (void)
133: {
134: zlog_info ("SIGHUP received");
135: rip_clean ();
136: rip_reset ();
137: zlog_info ("ripd restarting!");
138:
139: /* Reload config file. */
140: vty_read_config (config_file, config_default);
141:
142: /* Create VTY's socket */
143: vty_serv_sock (vty_addr, vty_port, RIP_VTYSH_PATH);
144:
145: /* Try to return to normal operation. */
146: }
147:
148: /* SIGINT handler. */
149: static void
150: sigint (void)
151: {
152: zlog_notice ("Terminating on signal");
153:
154: if (! retain_mode)
155: rip_clean ();
156:
157: exit (0);
158: }
159:
160: /* SIGUSR1 handler. */
161: static void
162: sigusr1 (void)
163: {
164: zlog_rotate (NULL);
165: }
166:
167: static struct quagga_signal_t ripd_signals[] =
168: {
169: {
170: .signal = SIGHUP,
171: .handler = &sighup,
172: },
173: {
174: .signal = SIGUSR1,
175: .handler = &sigusr1,
176: },
177: {
178: .signal = SIGINT,
179: .handler = &sigint,
180: },
181: {
182: .signal = SIGTERM,
183: .handler = &sigint,
184: },
185: };
186:
187: /* Main routine of ripd. */
188: int
189: main (int argc, char **argv)
190: {
191: char *p;
192: int daemon_mode = 0;
193: int dryrun = 0;
194: char *progname;
195: struct thread thread;
196:
197: /* Set umask before anything for security */
198: umask (0027);
199:
200: /* Get program name. */
201: progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]);
202:
203: /* First of all we need logging init. */
204: zlog_default = openzlog (progname, ZLOG_RIP,
205: LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON);
206:
207: /* Command line option parse. */
208: while (1)
209: {
210: int opt;
211:
1.1.1.2 misho 212: opt = getopt_long (argc, argv, "df:i:z:hA:P:u:g:rvC", longopts, 0);
1.1 misho 213:
214: if (opt == EOF)
215: break;
216:
217: switch (opt)
218: {
219: case 0:
220: break;
221: case 'd':
222: daemon_mode = 1;
223: break;
224: case 'f':
225: config_file = optarg;
226: break;
227: case 'A':
228: vty_addr = optarg;
229: break;
230: case 'i':
231: pid_file = optarg;
232: break;
1.1.1.2 misho 233: case 'z':
234: zclient_serv_path_set (optarg);
235: break;
1.1 misho 236: case 'P':
237: /* Deal with atoi() returning 0 on failure, and ripd not
238: listening on rip port... */
239: if (strcmp(optarg, "0") == 0)
240: {
241: vty_port = 0;
242: break;
243: }
244: vty_port = atoi (optarg);
245: if (vty_port <= 0 || vty_port > 0xffff)
246: vty_port = RIP_VTY_PORT;
247: break;
248: case 'r':
249: retain_mode = 1;
250: break;
251: case 'C':
252: dryrun = 1;
253: break;
254: case 'u':
255: ripd_privs.user = optarg;
256: break;
257: case 'g':
258: ripd_privs.group = optarg;
259: break;
260: case 'v':
261: print_version (progname);
262: exit (0);
263: break;
264: case 'h':
265: usage (progname, 0);
266: break;
267: default:
268: usage (progname, 1);
269: break;
270: }
271: }
272:
273: /* Prepare master thread. */
274: master = thread_master_create ();
275:
276: /* Library initialization. */
277: zprivs_init (&ripd_privs);
1.1.1.3 ! misho 278: signal_init (master, array_size(ripd_signals), ripd_signals);
1.1 misho 279: cmd_init (1);
280: vty_init (master);
281: memory_init ();
282: keychain_init ();
283:
284: /* RIP related initialization. */
285: rip_init ();
286: rip_if_init ();
287: rip_zclient_init ();
288: rip_peer_init ();
289:
290: /* Sort all installed commands. */
291: sort_node ();
292:
293: /* Get configuration file. */
294: vty_read_config (config_file, config_default);
295:
296: /* Start execution only if not in dry-run mode */
297: if(dryrun)
298: return (0);
299:
300: /* Change to the daemon program. */
301: if (daemon_mode && daemon (0, 0) < 0)
302: {
303: zlog_err("RIPd daemon failed: %s", strerror(errno));
304: exit (1);
305: }
306:
307: /* Pid file create. */
308: pid_output (pid_file);
309:
310: /* Create VTY's socket */
311: vty_serv_sock (vty_addr, vty_port, RIP_VTYSH_PATH);
312:
313: /* Print banner. */
314: zlog_notice ("RIPd %s starting: vty@%d", QUAGGA_VERSION, vty_port);
315:
316: /* Execute each thread. */
317: while (thread_fetch (master, &thread))
318: thread_call (&thread);
319:
320: /* Not reached. */
321: return (0);
322: }
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