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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" |
eb5d44eb | 37 | |
38 | #include "isisd/dict.h" | |
39 | #include "include-netbsd/iso.h" | |
40 | #include "isisd/isis_constants.h" | |
41 | #include "isisd/isis_common.h" | |
42 | #include "isisd/isis_flags.h" | |
43 | #include "isisd/isis_circuit.h" | |
44 | #include "isisd/isisd.h" | |
45 | #include "isisd/isis_dynhn.h" | |
46 | ||
47 | /* Default configuration file name */ | |
48 | #define ISISD_DEFAULT_CONFIG "isisd.conf" | |
49 | /* Default vty port */ | |
fc58e874 | 50 | #define ISISD_VTY_PORT 2608 |
eb5d44eb | 51 | |
9e867fe6 | 52 | /* isisd privileges */ |
f390d2c7 | 53 | zebra_capabilities_t _caps_p[] = { |
ceacedba | 54 | ZCAP_NET_RAW, |
9e867fe6 | 55 | ZCAP_BIND |
56 | }; | |
57 | ||
f390d2c7 | 58 | struct zebra_privs_t isisd_privs = { |
9e867fe6 | 59 | #if defined(QUAGGA_USER) |
60 | .user = QUAGGA_USER, | |
61 | #endif | |
62 | #if defined QUAGGA_GROUP | |
63 | .group = QUAGGA_GROUP, | |
64 | #endif | |
65 | #ifdef VTY_GROUP | |
66 | .vty_group = VTY_GROUP, | |
67 | #endif | |
68 | .caps_p = _caps_p, | |
69 | .cap_num_p = 2, | |
70 | .cap_num_i = 0 | |
71 | }; | |
72 | ||
eb5d44eb | 73 | /* isisd options */ |
f390d2c7 | 74 | struct option longopts[] = { |
75 | {"daemon", no_argument, NULL, 'd'}, | |
76 | {"config_file", required_argument, NULL, 'f'}, | |
77 | {"pid_file", required_argument, NULL, 'i'}, | |
78 | {"vty_addr", required_argument, NULL, 'A'}, | |
79 | {"vty_port", required_argument, NULL, 'P'}, | |
80 | {"user", required_argument, NULL, 'u'}, | |
c065230a | 81 | {"group", required_argument, NULL, 'g'}, |
f390d2c7 | 82 | {"version", no_argument, NULL, 'v'}, |
876b8be0 | 83 | {"dryrun", no_argument, NULL, 'C'}, |
f390d2c7 | 84 | {"help", no_argument, NULL, 'h'}, |
85 | {0} | |
eb5d44eb | 86 | }; |
87 | ||
88 | /* Configuration file and directory. */ | |
eb5d44eb | 89 | char config_default[] = SYSCONFDIR ISISD_DEFAULT_CONFIG; |
90 | char *config_file = NULL; | |
91 | ||
92 | /* isisd program name. */ | |
93 | char *progname; | |
94 | ||
95 | int daemon_mode = 0; | |
96 | ||
97 | /* Master of threads. */ | |
98 | struct thread_master *master; | |
99 | ||
c3aac6ff | 100 | /* Process ID saved for use by init system */ |
1cd80845 | 101 | const char *pid_file = PATH_ISISD_PID; |
eb5d44eb | 102 | |
103 | /* for reload */ | |
37da8c01 | 104 | char _cwd[MAXPATHLEN]; |
105 | char _progpath[MAXPATHLEN]; | |
eb5d44eb | 106 | int _argc; |
107 | char **_argv; | |
108 | char **_envp; | |
109 | ||
41b36e90 PJ |
110 | /* |
111 | * Prototypes. | |
112 | */ | |
113 | void reload(void); | |
114 | void sighup(void); | |
115 | void sigint(void); | |
116 | void sigterm(void); | |
117 | void sigusr1(void); | |
118 | ||
119 | ||
eb5d44eb | 120 | /* Help information display. */ |
121 | static void | |
122 | usage (int status) | |
123 | { | |
124 | if (status != 0) | |
125 | fprintf (stderr, "Try `%s --help' for more information.\n", progname); | |
126 | else | |
f390d2c7 | 127 | { |
eb5d44eb | 128 | printf ("Usage : %s [OPTION...]\n\n\ |
129 | Daemon which manages IS-IS routing\n\n\ | |
130 | -d, --daemon Runs in daemon mode\n\ | |
131 | -f, --config_file Set configuration file name\n\ | |
c3aac6ff | 132 | -i, --pid_file Set process identifier file name\n\ |
133 | -A, --vty_addr Set vty's bind address\n\ | |
eb5d44eb | 134 | -P, --vty_port Set vty's port number\n\ |
c065230a | 135 | -u, --user User to run as\n\ |
136 | -g, --group Group to run as\n\ | |
eb5d44eb | 137 | -v, --version Print program version\n\ |
876b8be0 | 138 | -C, --dryrun Check configuration for validity and exit\n\ |
eb5d44eb | 139 | -h, --help Display this help and exit\n\ |
140 | \n\ | |
aa0b9f91 | 141 | Report bugs to http://bugzilla.quagga.net\n", progname); |
eb5d44eb | 142 | } |
143 | ||
144 | exit (status); | |
145 | } | |
146 | ||
147 | ||
148 | void | |
149 | reload () | |
150 | { | |
529d65b3 | 151 | zlog_debug ("Reload"); |
eb5d44eb | 152 | /* FIXME: Clean up func call here */ |
cdb6ee94 | 153 | vty_reset (); |
eb5d44eb | 154 | execve (_progpath, _argv, _envp); |
155 | } | |
156 | ||
887c44a4 | 157 | static void |
eb5d44eb | 158 | terminate (int i) |
159 | { | |
160 | exit (i); | |
161 | } | |
162 | ||
163 | /* | |
164 | * Signal handlers | |
165 | */ | |
2d75d052 | 166 | |
f390d2c7 | 167 | void |
2d75d052 | 168 | sighup (void) |
eb5d44eb | 169 | { |
529d65b3 | 170 | zlog_debug ("SIGHUP received"); |
eb5d44eb | 171 | reload (); |
172 | ||
173 | return; | |
174 | } | |
175 | ||
176 | void | |
2d75d052 | 177 | sigint (void) |
eb5d44eb | 178 | { |
887c44a4 | 179 | zlog_notice ("Terminating on signal SIGINT"); |
eb5d44eb | 180 | terminate (0); |
eb5d44eb | 181 | } |
182 | ||
183 | void | |
2d75d052 | 184 | sigterm (void) |
eb5d44eb | 185 | { |
887c44a4 | 186 | zlog_notice ("Terminating on signal SIGTERM"); |
eb5d44eb | 187 | terminate (0); |
188 | } | |
189 | ||
190 | void | |
2d75d052 | 191 | sigusr1 (void) |
eb5d44eb | 192 | { |
529d65b3 | 193 | zlog_debug ("SIGUSR1 received"); |
eb5d44eb | 194 | zlog_rotate (NULL); |
195 | } | |
196 | ||
2d75d052 | 197 | struct quagga_signal_t isisd_signals[] = |
f390d2c7 | 198 | { |
199 | { | |
200 | .signal = SIGHUP, | |
201 | .handler = &sighup, | |
202 | }, | |
2d75d052 | 203 | { |
f390d2c7 | 204 | .signal = SIGUSR1, |
205 | .handler = &sigusr1, | |
206 | }, | |
2d75d052 | 207 | { |
f390d2c7 | 208 | .signal = SIGINT, |
209 | .handler = &sigint, | |
210 | }, | |
2d75d052 | 211 | { |
f390d2c7 | 212 | .signal = SIGTERM, |
213 | .handler = &sigterm, | |
214 | }, | |
2d75d052 | 215 | }; |
eb5d44eb | 216 | |
217 | /* | |
218 | * Main routine of isisd. Parse arguments and handle IS-IS state machine. | |
219 | */ | |
f390d2c7 | 220 | int |
eb5d44eb | 221 | main (int argc, char **argv, char **envp) |
222 | { | |
223 | char *p; | |
224 | int opt, vty_port = ISISD_VTY_PORT; | |
225 | struct thread thread; | |
226 | char *config_file = NULL; | |
227 | char *vty_addr = NULL; | |
876b8be0 | 228 | int dryrun = 0; |
eb5d44eb | 229 | |
230 | /* Get the programname without the preceding path. */ | |
231 | progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]); | |
232 | ||
274a4a44 | 233 | zlog_default = openzlog (progname, ZLOG_ISIS, |
f390d2c7 | 234 | LOG_CONS | LOG_NDELAY | LOG_PID, LOG_DAEMON); |
eb5d44eb | 235 | |
eb5d44eb | 236 | /* for reload */ |
237 | _argc = argc; | |
238 | _argv = argv; | |
239 | _envp = envp; | |
240 | getcwd (_cwd, sizeof (_cwd)); | |
241 | if (*argv[0] == '.') | |
242 | snprintf (_progpath, sizeof (_progpath), "%s/%s", _cwd, _argv[0]); | |
243 | else | |
244 | snprintf (_progpath, sizeof (_progpath), "%s", argv[0]); | |
f390d2c7 | 245 | |
eb5d44eb | 246 | /* Command line argument treatment. */ |
f390d2c7 | 247 | while (1) |
eb5d44eb | 248 | { |
876b8be0 | 249 | opt = getopt_long (argc, argv, "df:i:hA:p:P:u:g:vC", longopts, 0); |
f390d2c7 | 250 | |
eb5d44eb | 251 | if (opt == EOF) |
f390d2c7 | 252 | break; |
253 | ||
254 | switch (opt) | |
255 | { | |
256 | case 0: | |
257 | break; | |
258 | case 'd': | |
259 | daemon_mode = 1; | |
260 | break; | |
261 | case 'f': | |
262 | config_file = optarg; | |
263 | break; | |
264 | case 'i': | |
265 | pid_file = optarg; | |
266 | break; | |
267 | case 'A': | |
268 | vty_addr = optarg; | |
269 | break; | |
270 | case 'P': | |
271 | /* Deal with atoi() returning 0 on failure, and isisd not | |
272 | listening on isisd port... */ | |
273 | if (strcmp (optarg, "0") == 0) | |
274 | { | |
275 | vty_port = 0; | |
276 | break; | |
277 | } | |
278 | vty_port = atoi (optarg); | |
279 | vty_port = (vty_port ? vty_port : ISISD_VTY_PORT); | |
9e867fe6 | 280 | break; |
f390d2c7 | 281 | case 'u': |
c065230a | 282 | isisd_privs.user = optarg; |
f390d2c7 | 283 | break; |
c065230a | 284 | case 'g': |
285 | isisd_privs.group = optarg; | |
f390d2c7 | 286 | break; |
287 | case 'v': | |
288 | printf ("ISISd version %s\n", ISISD_VERSION); | |
289 | printf ("Copyright (c) 2001-2002 Sampo Saaristo," | |
290 | " Ofer Wald and Hannes Gredler\n"); | |
291 | print_version ("Zebra"); | |
292 | exit (0); | |
293 | break; | |
876b8be0 PJ |
294 | case 'C': |
295 | dryrun = 1; | |
296 | break; | |
f390d2c7 | 297 | case 'h': |
298 | usage (0); | |
299 | break; | |
300 | default: | |
301 | usage (1); | |
302 | break; | |
303 | } | |
eb5d44eb | 304 | } |
f390d2c7 | 305 | |
eb5d44eb | 306 | /* thread master */ |
307 | master = thread_master_create (); | |
308 | ||
309 | /* random seed from time */ | |
f390d2c7 | 310 | srand (time (NULL)); |
eb5d44eb | 311 | |
312 | /* | |
313 | * initializations | |
314 | */ | |
9e867fe6 | 315 | zprivs_init (&isisd_privs); |
f390d2c7 | 316 | signal_init (master, Q_SIGC (isisd_signals), isisd_signals); |
eb5d44eb | 317 | cmd_init (1); |
9e867fe6 | 318 | vty_init (master); |
eb5d44eb | 319 | memory_init (); |
c729c650 | 320 | access_list_init(); |
eb5d44eb | 321 | isis_init (); |
322 | dyn_cache_init (); | |
323 | sort_node (); | |
324 | ||
f390d2c7 | 325 | /* parse config file */ |
eb5d44eb | 326 | /* this is needed three times! because we have interfaces before the areas */ |
320ec10a | 327 | vty_read_config (config_file, config_default); |
328 | vty_read_config (config_file, config_default); | |
329 | vty_read_config (config_file, config_default); | |
00995cfc | 330 | |
876b8be0 PJ |
331 | /* Start execution only if not in dry-run mode */ |
332 | if (dryrun) | |
333 | return(0); | |
334 | ||
eb5d44eb | 335 | /* demonize */ |
065de903 SH |
336 | if (daemon_mode && daemon (0, 0) < 0) |
337 | { | |
338 | zlog_err("ISISd daemon failed: %s", strerror(errno)); | |
339 | exit (1); | |
340 | } | |
eb5d44eb | 341 | |
eb5d44eb | 342 | /* Process ID file creation. */ |
c3aac6ff | 343 | pid_output (pid_file); |
eb5d44eb | 344 | |
345 | /* Make isis vty socket. */ | |
9e867fe6 | 346 | vty_serv_sock (vty_addr, vty_port, ISIS_VTYSH_PATH); |
f390d2c7 | 347 | |
eb5d44eb | 348 | /* Print banner. */ |
887c44a4 | 349 | zlog_notice ("Quagga-ISISd %s starting: vty@%d", QUAGGA_VERSION, vty_port); |
c89c05dd | 350 | |
eb5d44eb | 351 | /* Start finite state machine. */ |
352 | while (thread_fetch (master, &thread)) | |
353 | thread_call (&thread); | |
354 | ||
355 | /* Not reached. */ | |
356 | exit (0); | |
357 | } |