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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" |
718e3744 | 35 | |
36 | #include "ripd/ripd.h" | |
37 | ||
38 | /* ripd options. */ | |
39 | static struct option longopts[] = | |
40 | { | |
41 | { "daemon", no_argument, NULL, 'd'}, | |
42 | { "config_file", required_argument, NULL, 'f'}, | |
43 | { "pid_file", required_argument, NULL, 'i'}, | |
44 | { "help", no_argument, NULL, 'h'}, | |
876b8be0 | 45 | { "dryrun", no_argument, NULL, 'C'}, |
718e3744 | 46 | { "vty_addr", required_argument, NULL, 'A'}, |
47 | { "vty_port", required_argument, NULL, 'P'}, | |
48 | { "retain", no_argument, NULL, 'r'}, | |
edd7c245 | 49 | { "user", required_argument, NULL, 'u'}, |
c065230a | 50 | { "group", required_argument, NULL, 'g'}, |
718e3744 | 51 | { "version", no_argument, NULL, 'v'}, |
52 | { 0 } | |
53 | }; | |
54 | ||
edd7c245 | 55 | /* ripd privileges */ |
56 | zebra_capabilities_t _caps_p [] = | |
57 | { | |
ceacedba | 58 | ZCAP_NET_RAW, |
edd7c245 | 59 | ZCAP_BIND |
60 | }; | |
61 | ||
62 | struct zebra_privs_t ripd_privs = | |
63 | { | |
d81fadfd | 64 | #if defined(QUAGGA_USER) |
65 | .user = QUAGGA_USER, | |
edd7c245 | 66 | #endif |
d81fadfd | 67 | #if defined QUAGGA_GROUP |
68 | .group = QUAGGA_GROUP, | |
69 | #endif | |
70 | #ifdef VTY_GROUP | |
71 | .vty_group = VTY_GROUP, | |
edd7c245 | 72 | #endif |
73 | .caps_p = _caps_p, | |
74 | .cap_num_p = 2, | |
75 | .cap_num_i = 0 | |
76 | }; | |
77 | ||
718e3744 | 78 | /* Configuration file and directory. */ |
718e3744 | 79 | char config_default[] = SYSCONFDIR RIPD_DEFAULT_CONFIG; |
80 | char *config_file = NULL; | |
81 | ||
82 | /* ripd program name */ | |
83 | ||
84 | /* Route retain mode flag. */ | |
85 | int retain_mode = 0; | |
86 | ||
87 | /* RIP VTY bind address. */ | |
88 | char *vty_addr = NULL; | |
89 | ||
90 | /* RIP VTY connection port. */ | |
91 | int vty_port = RIP_VTY_PORT; | |
92 | ||
93 | /* Master of threads. */ | |
94 | struct thread_master *master; | |
95 | ||
96 | /* Process ID saved for use by init system */ | |
8a676be3 | 97 | const char *pid_file = PATH_RIPD_PID; |
718e3744 | 98 | |
99 | /* Help information display. */ | |
100 | static void | |
101 | usage (char *progname, int status) | |
102 | { | |
103 | if (status != 0) | |
104 | fprintf (stderr, "Try `%s --help' for more information.\n", progname); | |
105 | else | |
106 | { | |
107 | printf ("Usage : %s [OPTION...]\n\ | |
108 | Daemon which manages RIP version 1 and 2.\n\n\ | |
109 | -d, --daemon Runs in daemon mode\n\ | |
110 | -f, --config_file Set configuration file name\n\ | |
111 | -i, --pid_file Set process identifier file name\n\ | |
112 | -A, --vty_addr Set vty's bind address\n\ | |
113 | -P, --vty_port Set vty's port number\n\ | |
876b8be0 | 114 | -C, --dryrun Check configuration for validity and exit\n\ |
718e3744 | 115 | -r, --retain When program terminates, retain added route by ripd.\n\ |
c065230a | 116 | -u, --user User to run as\n\ |
117 | -g, --group Group to run as\n\ | |
718e3744 | 118 | -v, --version Print program version\n\ |
119 | -h, --help Display this help and exit\n\ | |
120 | \n\ | |
121 | Report bugs to %s\n", progname, ZEBRA_BUG_ADDRESS); | |
122 | } | |
123 | ||
124 | exit (status); | |
125 | } | |
126 | \f | |
718e3744 | 127 | /* SIGHUP handler. */ |
dc63bfd4 | 128 | static void |
2d75d052 | 129 | sighup (void) |
718e3744 | 130 | { |
131 | zlog_info ("SIGHUP received"); | |
132 | rip_clean (); | |
133 | rip_reset (); | |
134 | zlog_info ("ripd restarting!"); | |
135 | ||
136 | /* Reload config file. */ | |
320ec10a | 137 | vty_read_config (config_file, config_default); |
718e3744 | 138 | |
139 | /* Create VTY's socket */ | |
140 | vty_serv_sock (vty_addr, vty_port, RIP_VTYSH_PATH); | |
141 | ||
142 | /* Try to return to normal operation. */ | |
143 | } | |
144 | ||
145 | /* SIGINT handler. */ | |
dc63bfd4 | 146 | static void |
2d75d052 | 147 | sigint (void) |
718e3744 | 148 | { |
887c44a4 | 149 | zlog_notice ("Terminating on signal"); |
718e3744 | 150 | |
151 | if (! retain_mode) | |
152 | rip_clean (); | |
153 | ||
154 | exit (0); | |
155 | } | |
156 | ||
157 | /* SIGUSR1 handler. */ | |
dc63bfd4 | 158 | static void |
2d75d052 | 159 | sigusr1 (void) |
718e3744 | 160 | { |
161 | zlog_rotate (NULL); | |
162 | } | |
163 | ||
dc63bfd4 | 164 | static struct quagga_signal_t ripd_signals[] = |
718e3744 | 165 | { |
2d75d052 | 166 | { |
167 | .signal = SIGHUP, | |
168 | .handler = &sighup, | |
169 | }, | |
170 | { | |
171 | .signal = SIGUSR1, | |
172 | .handler = &sigusr1, | |
173 | }, | |
174 | { | |
175 | .signal = SIGINT, | |
8c903fbb | 176 | .handler = &sigint, |
2d75d052 | 177 | }, |
f571dab0 | 178 | { |
179 | .signal = SIGTERM, | |
180 | .handler = &sigint, | |
181 | }, | |
2d75d052 | 182 | }; |
718e3744 | 183 | \f |
184 | /* Main routine of ripd. */ | |
185 | int | |
186 | main (int argc, char **argv) | |
187 | { | |
188 | char *p; | |
189 | int daemon_mode = 0; | |
876b8be0 | 190 | int dryrun = 0; |
718e3744 | 191 | char *progname; |
192 | struct thread thread; | |
193 | ||
194 | /* Set umask before anything for security */ | |
195 | umask (0027); | |
196 | ||
197 | /* Get program name. */ | |
198 | progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]); | |
199 | ||
200 | /* First of all we need logging init. */ | |
274a4a44 | 201 | zlog_default = openzlog (progname, ZLOG_RIP, |
718e3744 | 202 | LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON); |
203 | ||
204 | /* Command line option parse. */ | |
205 | while (1) | |
206 | { | |
207 | int opt; | |
208 | ||
876b8be0 | 209 | opt = getopt_long (argc, argv, "df:i:hA:P:u:g:rvC", longopts, 0); |
718e3744 | 210 | |
211 | if (opt == EOF) | |
212 | break; | |
213 | ||
214 | switch (opt) | |
215 | { | |
216 | case 0: | |
217 | break; | |
218 | case 'd': | |
219 | daemon_mode = 1; | |
220 | break; | |
221 | case 'f': | |
222 | config_file = optarg; | |
223 | break; | |
224 | case 'A': | |
225 | vty_addr = optarg; | |
226 | break; | |
227 | case 'i': | |
228 | pid_file = optarg; | |
229 | break; | |
230 | case 'P': | |
4fc4e7ab | 231 | /* Deal with atoi() returning 0 on failure, and ripd not |
232 | listening on rip port... */ | |
233 | if (strcmp(optarg, "0") == 0) | |
234 | { | |
235 | vty_port = 0; | |
236 | break; | |
237 | } | |
238 | vty_port = atoi (optarg); | |
239 | vty_port = (vty_port ? vty_port : RIP_VTY_PORT); | |
718e3744 | 240 | break; |
241 | case 'r': | |
242 | retain_mode = 1; | |
243 | break; | |
876b8be0 PJ |
244 | case 'C': |
245 | dryrun = 1; | |
246 | break; | |
c065230a | 247 | case 'u': |
248 | ripd_privs.user = optarg; | |
249 | break; | |
250 | case 'g': | |
251 | ripd_privs.group = optarg; | |
252 | break; | |
718e3744 | 253 | case 'v': |
254 | print_version (progname); | |
255 | exit (0); | |
256 | break; | |
257 | case 'h': | |
258 | usage (progname, 0); | |
259 | break; | |
260 | default: | |
261 | usage (progname, 1); | |
262 | break; | |
263 | } | |
264 | } | |
265 | ||
266 | /* Prepare master thread. */ | |
267 | master = thread_master_create (); | |
268 | ||
269 | /* Library initialization. */ | |
edd7c245 | 270 | zprivs_init (&ripd_privs); |
2d75d052 | 271 | signal_init (master, Q_SIGC(ripd_signals), ripd_signals); |
718e3744 | 272 | cmd_init (1); |
b21b19c5 | 273 | vty_init (master); |
718e3744 | 274 | memory_init (); |
275 | keychain_init (); | |
276 | ||
277 | /* RIP related initialization. */ | |
278 | rip_init (); | |
279 | rip_if_init (); | |
280 | rip_zclient_init (); | |
281 | rip_peer_init (); | |
282 | ||
283 | /* Sort all installed commands. */ | |
284 | sort_node (); | |
285 | ||
286 | /* Get configuration file. */ | |
320ec10a | 287 | vty_read_config (config_file, config_default); |
718e3744 | 288 | |
876b8be0 PJ |
289 | /* Start execution only if not in dry-run mode */ |
290 | if(dryrun) | |
291 | return (0); | |
292 | ||
718e3744 | 293 | /* Change to the daemon program. */ |
294 | if (daemon_mode) | |
295 | daemon (0, 0); | |
296 | ||
297 | /* Pid file create. */ | |
298 | pid_output (pid_file); | |
299 | ||
300 | /* Create VTY's socket */ | |
301 | vty_serv_sock (vty_addr, vty_port, RIP_VTYSH_PATH); | |
302 | ||
887c44a4 | 303 | /* Print banner. */ |
304 | zlog_notice ("RIPd %s starting: vty@%d", QUAGGA_VERSION, vty_port); | |
305 | ||
718e3744 | 306 | /* Execute each thread. */ |
307 | while (thread_fetch (master, &thread)) | |
308 | thread_call (&thread); | |
309 | ||
310 | /* Not reached. */ | |
e8e1946e | 311 | return (0); |
718e3744 | 312 | } |