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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" | |
fc7948fa | 32 | #include "memory_vty.h" |
eb5d44eb | 33 | #include "stream.h" |
34 | #include "if.h" | |
9e867fe6 | 35 | #include "privs.h" |
2d75d052 | 36 | #include "sigevent.h" |
c729c650 | 37 | #include "filter.h" |
f3ccedaa | 38 | #include "plist.h" |
48d8bea8 | 39 | #include "zclient.h" |
6a69b354 | 40 | #include "vrf.h" |
eb5d44eb | 41 | |
42 | #include "isisd/dict.h" | |
43 | #include "include-netbsd/iso.h" | |
44 | #include "isisd/isis_constants.h" | |
45 | #include "isisd/isis_common.h" | |
46 | #include "isisd/isis_flags.h" | |
47 | #include "isisd/isis_circuit.h" | |
48 | #include "isisd/isisd.h" | |
49 | #include "isisd/isis_dynhn.h" | |
3f045a08 JB |
50 | #include "isisd/isis_spf.h" |
51 | #include "isisd/isis_route.h" | |
f3ccedaa | 52 | #include "isisd/isis_routemap.h" |
3f045a08 | 53 | #include "isisd/isis_zebra.h" |
f8c06e2c OD |
54 | #include "isisd/isis_tlv.h" |
55 | #include "isisd/isis_te.h" | |
eb5d44eb | 56 | |
57 | /* Default configuration file name */ | |
58 | #define ISISD_DEFAULT_CONFIG "isisd.conf" | |
59 | /* Default vty port */ | |
fc58e874 | 60 | #define ISISD_VTY_PORT 2608 |
eb5d44eb | 61 | |
9e867fe6 | 62 | /* isisd privileges */ |
f390d2c7 | 63 | zebra_capabilities_t _caps_p[] = { |
ceacedba | 64 | ZCAP_NET_RAW, |
9e867fe6 | 65 | ZCAP_BIND |
66 | }; | |
67 | ||
f390d2c7 | 68 | struct zebra_privs_t isisd_privs = { |
9e867fe6 | 69 | #if defined(QUAGGA_USER) |
70 | .user = QUAGGA_USER, | |
71 | #endif | |
72 | #if defined QUAGGA_GROUP | |
73 | .group = QUAGGA_GROUP, | |
74 | #endif | |
75 | #ifdef VTY_GROUP | |
76 | .vty_group = VTY_GROUP, | |
77 | #endif | |
78 | .caps_p = _caps_p, | |
3f045a08 | 79 | .cap_num_p = sizeof (_caps_p) / sizeof (*_caps_p), |
9e867fe6 | 80 | .cap_num_i = 0 |
81 | }; | |
82 | ||
eb5d44eb | 83 | /* isisd options */ |
f390d2c7 | 84 | struct option longopts[] = { |
1627b20f | 85 | {"daemon", no_argument, NULL, 'd'}, |
f390d2c7 | 86 | {"config_file", required_argument, NULL, 'f'}, |
1627b20f | 87 | {"pid_file", required_argument, NULL, 'i'}, |
48d8bea8 | 88 | {"socket", required_argument, NULL, 'z'}, |
1627b20f VT |
89 | {"vty_addr", required_argument, NULL, 'A'}, |
90 | {"vty_port", required_argument, NULL, 'P'}, | |
91 | {"user", required_argument, NULL, 'u'}, | |
92 | {"group", required_argument, NULL, 'g'}, | |
93 | {"version", no_argument, NULL, 'v'}, | |
94 | {"dryrun", no_argument, NULL, 'C'}, | |
95 | {"help", no_argument, NULL, 'h'}, | |
f390d2c7 | 96 | {0} |
eb5d44eb | 97 | }; |
98 | ||
99 | /* Configuration file and directory. */ | |
eb5d44eb | 100 | char config_default[] = SYSCONFDIR ISISD_DEFAULT_CONFIG; |
101 | char *config_file = NULL; | |
102 | ||
103 | /* isisd program name. */ | |
104 | char *progname; | |
105 | ||
106 | int daemon_mode = 0; | |
107 | ||
108 | /* Master of threads. */ | |
109 | struct thread_master *master; | |
110 | ||
c3aac6ff | 111 | /* Process ID saved for use by init system */ |
1cd80845 | 112 | const char *pid_file = PATH_ISISD_PID; |
eb5d44eb | 113 | |
114 | /* for reload */ | |
37da8c01 | 115 | char _cwd[MAXPATHLEN]; |
116 | char _progpath[MAXPATHLEN]; | |
eb5d44eb | 117 | int _argc; |
118 | char **_argv; | |
119 | char **_envp; | |
120 | ||
41b36e90 PJ |
121 | /* |
122 | * Prototypes. | |
123 | */ | |
124 | void reload(void); | |
125 | void sighup(void); | |
126 | void sigint(void); | |
127 | void sigterm(void); | |
128 | void sigusr1(void); | |
129 | ||
130 | ||
eb5d44eb | 131 | /* Help information display. */ |
132 | static void | |
133 | usage (int status) | |
134 | { | |
135 | if (status != 0) | |
136 | fprintf (stderr, "Try `%s --help' for more information.\n", progname); | |
137 | else | |
f390d2c7 | 138 | { |
eb5d44eb | 139 | printf ("Usage : %s [OPTION...]\n\n\ |
140 | Daemon which manages IS-IS routing\n\n\ | |
141 | -d, --daemon Runs in daemon mode\n\ | |
142 | -f, --config_file Set configuration file name\n\ | |
c3aac6ff | 143 | -i, --pid_file Set process identifier file name\n\ |
48d8bea8 | 144 | -z, --socket Set path of zebra socket\n\ |
c3aac6ff | 145 | -A, --vty_addr Set vty's bind address\n\ |
eb5d44eb | 146 | -P, --vty_port Set vty's port number\n\ |
c065230a | 147 | -u, --user User to run as\n\ |
148 | -g, --group Group to run as\n\ | |
eb5d44eb | 149 | -v, --version Print program version\n\ |
876b8be0 | 150 | -C, --dryrun Check configuration for validity and exit\n\ |
eb5d44eb | 151 | -h, --help Display this help and exit\n\ |
152 | \n\ | |
4ff3bcad | 153 | Report bugs to %s\n", progname, ZEBRA_BUG_ADDRESS); |
eb5d44eb | 154 | } |
155 | ||
156 | exit (status); | |
157 | } | |
158 | ||
159 | ||
160 | void | |
161 | reload () | |
162 | { | |
529d65b3 | 163 | zlog_debug ("Reload"); |
eb5d44eb | 164 | /* FIXME: Clean up func call here */ |
cdb6ee94 | 165 | vty_reset (); |
3f045a08 | 166 | (void) isisd_privs.change (ZPRIVS_RAISE); |
eb5d44eb | 167 | execve (_progpath, _argv, _envp); |
3f045a08 JB |
168 | zlog_err ("Reload failed: cannot exec %s: %s", _progpath, |
169 | safe_strerror (errno)); | |
eb5d44eb | 170 | } |
171 | ||
35dece84 | 172 | static __attribute__((__noreturn__)) void |
eb5d44eb | 173 | terminate (int i) |
174 | { | |
175 | exit (i); | |
176 | } | |
177 | ||
178 | /* | |
179 | * Signal handlers | |
180 | */ | |
2d75d052 | 181 | |
f390d2c7 | 182 | void |
2d75d052 | 183 | sighup (void) |
eb5d44eb | 184 | { |
529d65b3 | 185 | zlog_debug ("SIGHUP received"); |
eb5d44eb | 186 | reload (); |
187 | ||
188 | return; | |
189 | } | |
190 | ||
35dece84 | 191 | __attribute__((__noreturn__)) void |
2d75d052 | 192 | sigint (void) |
eb5d44eb | 193 | { |
887c44a4 | 194 | zlog_notice ("Terminating on signal SIGINT"); |
eb5d44eb | 195 | terminate (0); |
eb5d44eb | 196 | } |
197 | ||
35dece84 | 198 | __attribute__((__noreturn__)) void |
2d75d052 | 199 | sigterm (void) |
eb5d44eb | 200 | { |
887c44a4 | 201 | zlog_notice ("Terminating on signal SIGTERM"); |
eb5d44eb | 202 | terminate (0); |
203 | } | |
204 | ||
205 | void | |
2d75d052 | 206 | sigusr1 (void) |
eb5d44eb | 207 | { |
529d65b3 | 208 | zlog_debug ("SIGUSR1 received"); |
eb5d44eb | 209 | zlog_rotate (NULL); |
210 | } | |
211 | ||
2d75d052 | 212 | struct quagga_signal_t isisd_signals[] = |
f390d2c7 | 213 | { |
214 | { | |
215 | .signal = SIGHUP, | |
216 | .handler = &sighup, | |
217 | }, | |
2d75d052 | 218 | { |
f390d2c7 | 219 | .signal = SIGUSR1, |
220 | .handler = &sigusr1, | |
221 | }, | |
2d75d052 | 222 | { |
f390d2c7 | 223 | .signal = SIGINT, |
224 | .handler = &sigint, | |
225 | }, | |
2d75d052 | 226 | { |
f390d2c7 | 227 | .signal = SIGTERM, |
228 | .handler = &sigterm, | |
229 | }, | |
2d75d052 | 230 | }; |
eb5d44eb | 231 | |
232 | /* | |
233 | * Main routine of isisd. Parse arguments and handle IS-IS state machine. | |
234 | */ | |
f390d2c7 | 235 | int |
eb5d44eb | 236 | main (int argc, char **argv, char **envp) |
237 | { | |
238 | char *p; | |
239 | int opt, vty_port = ISISD_VTY_PORT; | |
240 | struct thread thread; | |
241 | char *config_file = NULL; | |
242 | char *vty_addr = NULL; | |
876b8be0 | 243 | int dryrun = 0; |
eb5d44eb | 244 | |
245 | /* Get the programname without the preceding path. */ | |
246 | progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]); | |
247 | ||
7c8ff89e | 248 | zlog_default = openzlog (progname, ZLOG_ISIS, 0, |
f390d2c7 | 249 | LOG_CONS | LOG_NDELAY | LOG_PID, LOG_DAEMON); |
2caa9b39 | 250 | zprivs_init (&isisd_privs); |
c05795b1 SK |
251 | #if defined(HAVE_CUMULUS) |
252 | zlog_set_level (NULL, ZLOG_DEST_SYSLOG, zlog_default->default_lvl); | |
253 | #endif | |
eb5d44eb | 254 | |
eb5d44eb | 255 | /* for reload */ |
256 | _argc = argc; | |
257 | _argv = argv; | |
258 | _envp = envp; | |
7a49a5b5 DS |
259 | if (getcwd (_cwd, sizeof (_cwd)) == NULL) |
260 | { | |
261 | zlog_err ("ISISd: Unable to determine CWD: %d", errno); | |
262 | exit (1); | |
263 | } | |
264 | ||
eb5d44eb | 265 | if (*argv[0] == '.') |
266 | snprintf (_progpath, sizeof (_progpath), "%s/%s", _cwd, _argv[0]); | |
267 | else | |
268 | snprintf (_progpath, sizeof (_progpath), "%s", argv[0]); | |
f390d2c7 | 269 | |
eb5d44eb | 270 | /* Command line argument treatment. */ |
f390d2c7 | 271 | while (1) |
eb5d44eb | 272 | { |
48d8bea8 | 273 | opt = getopt_long (argc, argv, "df:i:z:hA:p:P:u:g:vC", longopts, 0); |
f390d2c7 | 274 | |
eb5d44eb | 275 | if (opt == EOF) |
f390d2c7 | 276 | break; |
277 | ||
278 | switch (opt) | |
279 | { | |
280 | case 0: | |
281 | break; | |
282 | case 'd': | |
283 | daemon_mode = 1; | |
284 | break; | |
285 | case 'f': | |
286 | config_file = optarg; | |
287 | break; | |
288 | case 'i': | |
289 | pid_file = optarg; | |
290 | break; | |
48d8bea8 VT |
291 | case 'z': |
292 | zclient_serv_path_set (optarg); | |
293 | break; | |
f390d2c7 | 294 | case 'A': |
295 | vty_addr = optarg; | |
296 | break; | |
297 | case 'P': | |
298 | /* Deal with atoi() returning 0 on failure, and isisd not | |
299 | listening on isisd port... */ | |
300 | if (strcmp (optarg, "0") == 0) | |
301 | { | |
302 | vty_port = 0; | |
303 | break; | |
304 | } | |
305 | vty_port = atoi (optarg); | |
306 | vty_port = (vty_port ? vty_port : ISISD_VTY_PORT); | |
9e867fe6 | 307 | break; |
f390d2c7 | 308 | case 'u': |
c065230a | 309 | isisd_privs.user = optarg; |
f390d2c7 | 310 | break; |
c065230a | 311 | case 'g': |
312 | isisd_privs.group = optarg; | |
f390d2c7 | 313 | break; |
314 | case 'v': | |
315 | printf ("ISISd version %s\n", ISISD_VERSION); | |
316 | printf ("Copyright (c) 2001-2002 Sampo Saaristo," | |
317 | " Ofer Wald and Hannes Gredler\n"); | |
318 | print_version ("Zebra"); | |
319 | exit (0); | |
320 | break; | |
876b8be0 PJ |
321 | case 'C': |
322 | dryrun = 1; | |
323 | break; | |
f390d2c7 | 324 | case 'h': |
325 | usage (0); | |
326 | break; | |
327 | default: | |
328 | usage (1); | |
329 | break; | |
330 | } | |
eb5d44eb | 331 | } |
f390d2c7 | 332 | |
eb5d44eb | 333 | /* thread master */ |
334 | master = thread_master_create (); | |
335 | ||
336 | /* random seed from time */ | |
b06fd125 | 337 | srandom (time (NULL)); |
eb5d44eb | 338 | |
339 | /* | |
340 | * initializations | |
341 | */ | |
837d16cc | 342 | signal_init (master, array_size (isisd_signals), isisd_signals); |
eb5d44eb | 343 | cmd_init (1); |
9e867fe6 | 344 | vty_init (master); |
eb5d44eb | 345 | memory_init (); |
c729c650 | 346 | access_list_init(); |
6a69b354 | 347 | vrf_init (); |
f3ccedaa | 348 | prefix_list_init(); |
eb5d44eb | 349 | isis_init (); |
3f045a08 JB |
350 | isis_circuit_init (); |
351 | isis_spf_cmds_init (); | |
f3ccedaa CF |
352 | isis_redist_init (); |
353 | isis_route_map_init(); | |
f8c06e2c | 354 | isis_mpls_te_init(); |
3f045a08 JB |
355 | |
356 | /* create the global 'isis' instance */ | |
357 | isis_new (1); | |
358 | ||
4140ca4d | 359 | isis_zebra_init(master); |
3f045a08 | 360 | |
f390d2c7 | 361 | /* parse config file */ |
eb5d44eb | 362 | /* this is needed three times! because we have interfaces before the areas */ |
320ec10a | 363 | vty_read_config (config_file, config_default); |
00995cfc | 364 | |
876b8be0 PJ |
365 | /* Start execution only if not in dry-run mode */ |
366 | if (dryrun) | |
367 | return(0); | |
368 | ||
eb5d44eb | 369 | /* demonize */ |
7a49a5b5 DS |
370 | if (daemon_mode && daemon (0, 0) < 0) |
371 | { | |
372 | zlog_err("ISISd daemon failed: %s", strerror(errno)); | |
373 | return (1); | |
374 | } | |
eb5d44eb | 375 | |
eb5d44eb | 376 | /* Process ID file creation. */ |
3f045a08 JB |
377 | if (pid_file[0] != '\0') |
378 | pid_output (pid_file); | |
eb5d44eb | 379 | |
380 | /* Make isis vty socket. */ | |
9e867fe6 | 381 | vty_serv_sock (vty_addr, vty_port, ISIS_VTYSH_PATH); |
f390d2c7 | 382 | |
eb5d44eb | 383 | /* Print banner. */ |
887c44a4 | 384 | zlog_notice ("Quagga-ISISd %s starting: vty@%d", QUAGGA_VERSION, vty_port); |
c89c05dd | 385 | |
eb5d44eb | 386 | /* Start finite state machine. */ |
387 | while (thread_fetch (master, &thread)) | |
388 | thread_call (&thread); | |
389 | ||
390 | /* Not reached. */ | |
391 | exit (0); | |
392 | } |