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eb5d44eb | 1 | /* |
2 | * IS-IS Rout(e)ing protocol - isis_main.c | |
3 | * | |
4 | * Copyright (C) 2001,2002 Sampo Saaristo | |
5 | * Tampere University of Technology | |
6 | * Institute of Communications Engineering | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public Licenseas published by the Free | |
10 | * Software Foundation; either version 2 of the License, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful,but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
16 | * more details. | |
17 | ||
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; if not, write to the Free Software Foundation, Inc., | |
20 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
21 | */ | |
22 | ||
eb5d44eb | 23 | #include <zebra.h> |
eb5d44eb | 24 | |
25 | #include "getopt.h" | |
26 | #include "thread.h" | |
27 | #include "log.h" | |
5e4fa164 | 28 | #include <lib/version.h> |
eb5d44eb | 29 | #include "command.h" |
30 | #include "vty.h" | |
31 | #include "memory.h" | |
32 | #include "stream.h" | |
33 | #include "if.h" | |
9e867fe6 | 34 | #include "privs.h" |
2d75d052 | 35 | #include "sigevent.h" |
c729c650 | 36 | #include "filter.h" |
48d8bea8 | 37 | #include "zclient.h" |
eb5d44eb | 38 | |
39 | #include "isisd/dict.h" | |
40 | #include "include-netbsd/iso.h" | |
41 | #include "isisd/isis_constants.h" | |
42 | #include "isisd/isis_common.h" | |
43 | #include "isisd/isis_flags.h" | |
44 | #include "isisd/isis_circuit.h" | |
45 | #include "isisd/isisd.h" | |
46 | #include "isisd/isis_dynhn.h" | |
3f045a08 JB |
47 | #include "isisd/isis_spf.h" |
48 | #include "isisd/isis_route.h" | |
49 | #include "isisd/isis_zebra.h" | |
eb5d44eb | 50 | |
51 | /* Default configuration file name */ | |
52 | #define ISISD_DEFAULT_CONFIG "isisd.conf" | |
53 | /* Default vty port */ | |
fc58e874 | 54 | #define ISISD_VTY_PORT 2608 |
eb5d44eb | 55 | |
9e867fe6 | 56 | /* isisd privileges */ |
f390d2c7 | 57 | zebra_capabilities_t _caps_p[] = { |
ceacedba | 58 | ZCAP_NET_RAW, |
9e867fe6 | 59 | ZCAP_BIND |
60 | }; | |
61 | ||
f390d2c7 | 62 | struct zebra_privs_t isisd_privs = { |
9e867fe6 | 63 | #if defined(QUAGGA_USER) |
64 | .user = QUAGGA_USER, | |
65 | #endif | |
66 | #if defined QUAGGA_GROUP | |
67 | .group = QUAGGA_GROUP, | |
68 | #endif | |
69 | #ifdef VTY_GROUP | |
70 | .vty_group = VTY_GROUP, | |
71 | #endif | |
72 | .caps_p = _caps_p, | |
3f045a08 | 73 | .cap_num_p = sizeof (_caps_p) / sizeof (*_caps_p), |
9e867fe6 | 74 | .cap_num_i = 0 |
75 | }; | |
76 | ||
eb5d44eb | 77 | /* isisd options */ |
f390d2c7 | 78 | struct option longopts[] = { |
1627b20f | 79 | {"daemon", no_argument, NULL, 'd'}, |
f390d2c7 | 80 | {"config_file", required_argument, NULL, 'f'}, |
1627b20f | 81 | {"pid_file", required_argument, NULL, 'i'}, |
48d8bea8 | 82 | {"socket", required_argument, NULL, 'z'}, |
1627b20f VT |
83 | {"vty_addr", required_argument, NULL, 'A'}, |
84 | {"vty_port", required_argument, NULL, 'P'}, | |
85 | {"user", required_argument, NULL, 'u'}, | |
86 | {"group", required_argument, NULL, 'g'}, | |
87 | {"version", no_argument, NULL, 'v'}, | |
88 | {"dryrun", no_argument, NULL, 'C'}, | |
89 | {"help", no_argument, NULL, 'h'}, | |
f390d2c7 | 90 | {0} |
eb5d44eb | 91 | }; |
92 | ||
93 | /* Configuration file and directory. */ | |
eb5d44eb | 94 | char config_default[] = SYSCONFDIR ISISD_DEFAULT_CONFIG; |
95 | char *config_file = NULL; | |
96 | ||
97 | /* isisd program name. */ | |
98 | char *progname; | |
99 | ||
100 | int daemon_mode = 0; | |
101 | ||
102 | /* Master of threads. */ | |
103 | struct thread_master *master; | |
104 | ||
c3aac6ff | 105 | /* Process ID saved for use by init system */ |
1cd80845 | 106 | const char *pid_file = PATH_ISISD_PID; |
eb5d44eb | 107 | |
108 | /* for reload */ | |
37da8c01 | 109 | char _cwd[MAXPATHLEN]; |
110 | char _progpath[MAXPATHLEN]; | |
eb5d44eb | 111 | int _argc; |
112 | char **_argv; | |
113 | char **_envp; | |
114 | ||
41b36e90 PJ |
115 | /* |
116 | * Prototypes. | |
117 | */ | |
118 | void reload(void); | |
119 | void sighup(void); | |
120 | void sigint(void); | |
121 | void sigterm(void); | |
122 | void sigusr1(void); | |
123 | ||
124 | ||
eb5d44eb | 125 | /* Help information display. */ |
126 | static void | |
127 | usage (int status) | |
128 | { | |
129 | if (status != 0) | |
130 | fprintf (stderr, "Try `%s --help' for more information.\n", progname); | |
131 | else | |
f390d2c7 | 132 | { |
eb5d44eb | 133 | printf ("Usage : %s [OPTION...]\n\n\ |
134 | Daemon which manages IS-IS routing\n\n\ | |
135 | -d, --daemon Runs in daemon mode\n\ | |
136 | -f, --config_file Set configuration file name\n\ | |
c3aac6ff | 137 | -i, --pid_file Set process identifier file name\n\ |
48d8bea8 | 138 | -z, --socket Set path of zebra socket\n\ |
c3aac6ff | 139 | -A, --vty_addr Set vty's bind address\n\ |
eb5d44eb | 140 | -P, --vty_port Set vty's port number\n\ |
c065230a | 141 | -u, --user User to run as\n\ |
142 | -g, --group Group to run as\n\ | |
eb5d44eb | 143 | -v, --version Print program version\n\ |
876b8be0 | 144 | -C, --dryrun Check configuration for validity and exit\n\ |
eb5d44eb | 145 | -h, --help Display this help and exit\n\ |
146 | \n\ | |
4ff3bcad | 147 | Report bugs to %s\n", progname, ZEBRA_BUG_ADDRESS); |
eb5d44eb | 148 | } |
149 | ||
150 | exit (status); | |
151 | } | |
152 | ||
153 | ||
154 | void | |
155 | reload () | |
156 | { | |
529d65b3 | 157 | zlog_debug ("Reload"); |
eb5d44eb | 158 | /* FIXME: Clean up func call here */ |
cdb6ee94 | 159 | vty_reset (); |
3f045a08 | 160 | (void) isisd_privs.change (ZPRIVS_RAISE); |
eb5d44eb | 161 | execve (_progpath, _argv, _envp); |
3f045a08 JB |
162 | zlog_err ("Reload failed: cannot exec %s: %s", _progpath, |
163 | safe_strerror (errno)); | |
eb5d44eb | 164 | } |
165 | ||
887c44a4 | 166 | static void |
eb5d44eb | 167 | terminate (int i) |
168 | { | |
169 | exit (i); | |
170 | } | |
171 | ||
172 | /* | |
173 | * Signal handlers | |
174 | */ | |
2d75d052 | 175 | |
f390d2c7 | 176 | void |
2d75d052 | 177 | sighup (void) |
eb5d44eb | 178 | { |
529d65b3 | 179 | zlog_debug ("SIGHUP received"); |
eb5d44eb | 180 | reload (); |
181 | ||
182 | return; | |
183 | } | |
184 | ||
185 | void | |
2d75d052 | 186 | sigint (void) |
eb5d44eb | 187 | { |
887c44a4 | 188 | zlog_notice ("Terminating on signal SIGINT"); |
eb5d44eb | 189 | terminate (0); |
eb5d44eb | 190 | } |
191 | ||
192 | void | |
2d75d052 | 193 | sigterm (void) |
eb5d44eb | 194 | { |
887c44a4 | 195 | zlog_notice ("Terminating on signal SIGTERM"); |
eb5d44eb | 196 | terminate (0); |
197 | } | |
198 | ||
199 | void | |
2d75d052 | 200 | sigusr1 (void) |
eb5d44eb | 201 | { |
529d65b3 | 202 | zlog_debug ("SIGUSR1 received"); |
eb5d44eb | 203 | zlog_rotate (NULL); |
204 | } | |
205 | ||
2d75d052 | 206 | struct quagga_signal_t isisd_signals[] = |
f390d2c7 | 207 | { |
208 | { | |
209 | .signal = SIGHUP, | |
210 | .handler = &sighup, | |
211 | }, | |
2d75d052 | 212 | { |
f390d2c7 | 213 | .signal = SIGUSR1, |
214 | .handler = &sigusr1, | |
215 | }, | |
2d75d052 | 216 | { |
f390d2c7 | 217 | .signal = SIGINT, |
218 | .handler = &sigint, | |
219 | }, | |
2d75d052 | 220 | { |
f390d2c7 | 221 | .signal = SIGTERM, |
222 | .handler = &sigterm, | |
223 | }, | |
2d75d052 | 224 | }; |
eb5d44eb | 225 | |
226 | /* | |
227 | * Main routine of isisd. Parse arguments and handle IS-IS state machine. | |
228 | */ | |
f390d2c7 | 229 | int |
eb5d44eb | 230 | main (int argc, char **argv, char **envp) |
231 | { | |
232 | char *p; | |
233 | int opt, vty_port = ISISD_VTY_PORT; | |
234 | struct thread thread; | |
235 | char *config_file = NULL; | |
236 | char *vty_addr = NULL; | |
876b8be0 | 237 | int dryrun = 0; |
eb5d44eb | 238 | |
239 | /* Get the programname without the preceding path. */ | |
240 | progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]); | |
241 | ||
7c8ff89e | 242 | zlog_default = openzlog (progname, ZLOG_ISIS, 0, |
f390d2c7 | 243 | LOG_CONS | LOG_NDELAY | LOG_PID, LOG_DAEMON); |
eb5d44eb | 244 | |
eb5d44eb | 245 | /* for reload */ |
246 | _argc = argc; | |
247 | _argv = argv; | |
248 | _envp = envp; | |
7a49a5b5 DS |
249 | if (getcwd (_cwd, sizeof (_cwd)) == NULL) |
250 | { | |
251 | zlog_err ("ISISd: Unable to determine CWD: %d", errno); | |
252 | exit (1); | |
253 | } | |
254 | ||
eb5d44eb | 255 | if (*argv[0] == '.') |
256 | snprintf (_progpath, sizeof (_progpath), "%s/%s", _cwd, _argv[0]); | |
257 | else | |
258 | snprintf (_progpath, sizeof (_progpath), "%s", argv[0]); | |
f390d2c7 | 259 | |
eb5d44eb | 260 | /* Command line argument treatment. */ |
f390d2c7 | 261 | while (1) |
eb5d44eb | 262 | { |
48d8bea8 | 263 | opt = getopt_long (argc, argv, "df:i:z:hA:p:P:u:g:vC", longopts, 0); |
f390d2c7 | 264 | |
eb5d44eb | 265 | if (opt == EOF) |
f390d2c7 | 266 | break; |
267 | ||
268 | switch (opt) | |
269 | { | |
270 | case 0: | |
271 | break; | |
272 | case 'd': | |
273 | daemon_mode = 1; | |
274 | break; | |
275 | case 'f': | |
276 | config_file = optarg; | |
277 | break; | |
278 | case 'i': | |
279 | pid_file = optarg; | |
280 | break; | |
48d8bea8 VT |
281 | case 'z': |
282 | zclient_serv_path_set (optarg); | |
283 | break; | |
f390d2c7 | 284 | case 'A': |
285 | vty_addr = optarg; | |
286 | break; | |
287 | case 'P': | |
288 | /* Deal with atoi() returning 0 on failure, and isisd not | |
289 | listening on isisd port... */ | |
290 | if (strcmp (optarg, "0") == 0) | |
291 | { | |
292 | vty_port = 0; | |
293 | break; | |
294 | } | |
295 | vty_port = atoi (optarg); | |
296 | vty_port = (vty_port ? vty_port : ISISD_VTY_PORT); | |
9e867fe6 | 297 | break; |
f390d2c7 | 298 | case 'u': |
c065230a | 299 | isisd_privs.user = optarg; |
f390d2c7 | 300 | break; |
c065230a | 301 | case 'g': |
302 | isisd_privs.group = optarg; | |
f390d2c7 | 303 | break; |
304 | case 'v': | |
305 | printf ("ISISd version %s\n", ISISD_VERSION); | |
306 | printf ("Copyright (c) 2001-2002 Sampo Saaristo," | |
307 | " Ofer Wald and Hannes Gredler\n"); | |
308 | print_version ("Zebra"); | |
309 | exit (0); | |
310 | break; | |
876b8be0 PJ |
311 | case 'C': |
312 | dryrun = 1; | |
313 | break; | |
f390d2c7 | 314 | case 'h': |
315 | usage (0); | |
316 | break; | |
317 | default: | |
318 | usage (1); | |
319 | break; | |
320 | } | |
eb5d44eb | 321 | } |
f390d2c7 | 322 | |
eb5d44eb | 323 | /* thread master */ |
324 | master = thread_master_create (); | |
325 | ||
326 | /* random seed from time */ | |
f390d2c7 | 327 | srand (time (NULL)); |
eb5d44eb | 328 | |
329 | /* | |
330 | * initializations | |
331 | */ | |
9e867fe6 | 332 | zprivs_init (&isisd_privs); |
837d16cc | 333 | signal_init (master, array_size (isisd_signals), isisd_signals); |
eb5d44eb | 334 | cmd_init (1); |
9e867fe6 | 335 | vty_init (master); |
eb5d44eb | 336 | memory_init (); |
c729c650 | 337 | access_list_init(); |
eb5d44eb | 338 | isis_init (); |
3f045a08 JB |
339 | isis_circuit_init (); |
340 | isis_spf_cmds_init (); | |
341 | ||
342 | /* create the global 'isis' instance */ | |
343 | isis_new (1); | |
344 | ||
4140ca4d | 345 | isis_zebra_init(master); |
3f045a08 | 346 | |
f390d2c7 | 347 | /* parse config file */ |
eb5d44eb | 348 | /* this is needed three times! because we have interfaces before the areas */ |
320ec10a | 349 | vty_read_config (config_file, config_default); |
00995cfc | 350 | |
876b8be0 PJ |
351 | /* Start execution only if not in dry-run mode */ |
352 | if (dryrun) | |
353 | return(0); | |
354 | ||
eb5d44eb | 355 | /* demonize */ |
7a49a5b5 DS |
356 | if (daemon_mode && daemon (0, 0) < 0) |
357 | { | |
358 | zlog_err("ISISd daemon failed: %s", strerror(errno)); | |
359 | return (1); | |
360 | } | |
eb5d44eb | 361 | |
eb5d44eb | 362 | /* Process ID file creation. */ |
3f045a08 JB |
363 | if (pid_file[0] != '\0') |
364 | pid_output (pid_file); | |
eb5d44eb | 365 | |
366 | /* Make isis vty socket. */ | |
9e867fe6 | 367 | vty_serv_sock (vty_addr, vty_port, ISIS_VTYSH_PATH); |
f390d2c7 | 368 | |
eb5d44eb | 369 | /* Print banner. */ |
887c44a4 | 370 | zlog_notice ("Quagga-ISISd %s starting: vty@%d", QUAGGA_VERSION, vty_port); |
c89c05dd | 371 | |
eb5d44eb | 372 | /* Start finite state machine. */ |
373 | while (thread_fetch (master, &thread)) | |
374 | thread_call (&thread); | |
375 | ||
376 | /* Not reached. */ | |
377 | exit (0); | |
378 | } |