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718e3744 | 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 | ||
5e4fa164 | 24 | #include <lib/version.h> |
718e3744 | 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" | |
edd7c245 | 33 | #include "privs.h" |
2d75d052 | 34 | #include "sigevent.h" |
b5114685 | 35 | #include "zclient.h" |
718e3744 | 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'}, | |
b5114685 | 45 | { "socket", required_argument, NULL, 'z'}, |
718e3744 | 46 | { "help", no_argument, NULL, 'h'}, |
876b8be0 | 47 | { "dryrun", no_argument, NULL, 'C'}, |
718e3744 | 48 | { "vty_addr", required_argument, NULL, 'A'}, |
49 | { "vty_port", required_argument, NULL, 'P'}, | |
50 | { "retain", no_argument, NULL, 'r'}, | |
edd7c245 | 51 | { "user", required_argument, NULL, 'u'}, |
c065230a | 52 | { "group", required_argument, NULL, 'g'}, |
718e3744 | 53 | { "version", no_argument, NULL, 'v'}, |
54 | { 0 } | |
55 | }; | |
56 | ||
edd7c245 | 57 | /* ripd privileges */ |
58 | zebra_capabilities_t _caps_p [] = | |
59 | { | |
ceacedba | 60 | ZCAP_NET_RAW, |
edd7c245 | 61 | ZCAP_BIND |
62 | }; | |
63 | ||
64 | struct zebra_privs_t ripd_privs = | |
65 | { | |
d81fadfd | 66 | #if defined(QUAGGA_USER) |
67 | .user = QUAGGA_USER, | |
edd7c245 | 68 | #endif |
d81fadfd | 69 | #if defined QUAGGA_GROUP |
70 | .group = QUAGGA_GROUP, | |
71 | #endif | |
72 | #ifdef VTY_GROUP | |
73 | .vty_group = VTY_GROUP, | |
edd7c245 | 74 | #endif |
75 | .caps_p = _caps_p, | |
76 | .cap_num_p = 2, | |
77 | .cap_num_i = 0 | |
78 | }; | |
79 | ||
718e3744 | 80 | /* Configuration file and directory. */ |
718e3744 | 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 */ | |
8a676be3 | 99 | const char *pid_file = PATH_RIPD_PID; |
718e3744 | 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\ | |
b5114685 | 114 | -z, --socket Set path of zebra socket\n\ |
718e3744 | 115 | -A, --vty_addr Set vty's bind address\n\ |
116 | -P, --vty_port Set vty's port number\n\ | |
876b8be0 | 117 | -C, --dryrun Check configuration for validity and exit\n\ |
718e3744 | 118 | -r, --retain When program terminates, retain added route by ripd.\n\ |
c065230a | 119 | -u, --user User to run as\n\ |
120 | -g, --group Group to run as\n\ | |
718e3744 | 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 | \f | |
718e3744 | 130 | /* SIGHUP handler. */ |
dc63bfd4 | 131 | static void |
2d75d052 | 132 | sighup (void) |
718e3744 | 133 | { |
134 | zlog_info ("SIGHUP received"); | |
135 | rip_clean (); | |
136 | rip_reset (); | |
137 | zlog_info ("ripd restarting!"); | |
138 | ||
139 | /* Reload config file. */ | |
320ec10a | 140 | vty_read_config (config_file, config_default); |
718e3744 | 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. */ | |
dc63bfd4 | 149 | static void |
2d75d052 | 150 | sigint (void) |
718e3744 | 151 | { |
887c44a4 | 152 | zlog_notice ("Terminating on signal"); |
718e3744 | 153 | |
154 | if (! retain_mode) | |
155 | rip_clean (); | |
156 | ||
157 | exit (0); | |
158 | } | |
159 | ||
160 | /* SIGUSR1 handler. */ | |
dc63bfd4 | 161 | static void |
2d75d052 | 162 | sigusr1 (void) |
718e3744 | 163 | { |
164 | zlog_rotate (NULL); | |
165 | } | |
166 | ||
dc63bfd4 | 167 | static struct quagga_signal_t ripd_signals[] = |
718e3744 | 168 | { |
2d75d052 | 169 | { |
170 | .signal = SIGHUP, | |
171 | .handler = &sighup, | |
172 | }, | |
173 | { | |
174 | .signal = SIGUSR1, | |
175 | .handler = &sigusr1, | |
176 | }, | |
177 | { | |
178 | .signal = SIGINT, | |
8c903fbb | 179 | .handler = &sigint, |
2d75d052 | 180 | }, |
f571dab0 | 181 | { |
182 | .signal = SIGTERM, | |
183 | .handler = &sigint, | |
184 | }, | |
2d75d052 | 185 | }; |
718e3744 | 186 | \f |
187 | /* Main routine of ripd. */ | |
188 | int | |
189 | main (int argc, char **argv) | |
190 | { | |
191 | char *p; | |
192 | int daemon_mode = 0; | |
876b8be0 | 193 | int dryrun = 0; |
718e3744 | 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. */ | |
274a4a44 | 204 | zlog_default = openzlog (progname, ZLOG_RIP, |
718e3744 | 205 | LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON); |
206 | ||
207 | /* Command line option parse. */ | |
208 | while (1) | |
209 | { | |
210 | int opt; | |
211 | ||
b5114685 | 212 | opt = getopt_long (argc, argv, "df:i:z:hA:P:u:g:rvC", longopts, 0); |
718e3744 | 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; | |
b5114685 VT |
233 | case 'z': |
234 | zclient_serv_path_set (optarg); | |
235 | break; | |
718e3744 | 236 | case 'P': |
4fc4e7ab | 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); | |
0d6b2ee2 PJ |
245 | if (vty_port <= 0 || vty_port > 0xffff) |
246 | vty_port = RIP_VTY_PORT; | |
718e3744 | 247 | break; |
248 | case 'r': | |
249 | retain_mode = 1; | |
250 | break; | |
876b8be0 PJ |
251 | case 'C': |
252 | dryrun = 1; | |
253 | break; | |
c065230a | 254 | case 'u': |
255 | ripd_privs.user = optarg; | |
256 | break; | |
257 | case 'g': | |
258 | ripd_privs.group = optarg; | |
259 | break; | |
718e3744 | 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. */ | |
edd7c245 | 277 | zprivs_init (&ripd_privs); |
2d75d052 | 278 | signal_init (master, Q_SIGC(ripd_signals), ripd_signals); |
718e3744 | 279 | cmd_init (1); |
b21b19c5 | 280 | vty_init (master); |
718e3744 | 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. */ | |
320ec10a | 294 | vty_read_config (config_file, config_default); |
718e3744 | 295 | |
876b8be0 PJ |
296 | /* Start execution only if not in dry-run mode */ |
297 | if(dryrun) | |
298 | return (0); | |
299 | ||
718e3744 | 300 | /* Change to the daemon program. */ |
065de903 SH |
301 | if (daemon_mode && daemon (0, 0) < 0) |
302 | { | |
303 | zlog_err("RIPd daemon failed: %s", strerror(errno)); | |
304 | exit (1); | |
305 | } | |
718e3744 | 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 | ||
887c44a4 | 313 | /* Print banner. */ |
314 | zlog_notice ("RIPd %s starting: vty@%d", QUAGGA_VERSION, vty_port); | |
315 | ||
718e3744 | 316 | /* Execute each thread. */ |
317 | while (thread_fetch (master, &thread)) | |
318 | thread_call (&thread); | |
319 | ||
320 | /* Not reached. */ | |
e8e1946e | 321 | return (0); |
718e3744 | 322 | } |