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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 | ||
23 | #include <stdio.h> | |
24 | #include <zebra.h> | |
25 | #include <net/ethernet.h> | |
26 | ||
27 | #include "getopt.h" | |
28 | #include "thread.h" | |
29 | #include "log.h" | |
30 | #include "version.h" | |
31 | #include "command.h" | |
32 | #include "vty.h" | |
33 | #include "memory.h" | |
34 | #include "stream.h" | |
35 | #include "if.h" | |
9e867fe6 | 36 | #include "privs.h" |
2d75d052 | 37 | #include "sigevent.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" | |
47 | ||
48 | /* Default configuration file name */ | |
49 | #define ISISD_DEFAULT_CONFIG "isisd.conf" | |
50 | /* Default vty port */ | |
fc58e874 | 51 | #define ISISD_VTY_PORT 2608 |
eb5d44eb | 52 | |
9e867fe6 | 53 | /* isisd privileges */ |
54 | zebra_capabilities_t _caps_p [] = | |
55 | { | |
56 | ZCAP_RAW, | |
57 | ZCAP_BIND | |
58 | }; | |
59 | ||
60 | struct zebra_privs_t isisd_privs = | |
61 | { | |
62 | #if defined(QUAGGA_USER) | |
63 | .user = QUAGGA_USER, | |
64 | #endif | |
65 | #if defined QUAGGA_GROUP | |
66 | .group = QUAGGA_GROUP, | |
67 | #endif | |
68 | #ifdef VTY_GROUP | |
69 | .vty_group = VTY_GROUP, | |
70 | #endif | |
71 | .caps_p = _caps_p, | |
72 | .cap_num_p = 2, | |
73 | .cap_num_i = 0 | |
74 | }; | |
75 | ||
eb5d44eb | 76 | /* isisd options */ |
77 | struct option longopts[] = | |
78 | { | |
79 | { "daemon", no_argument, NULL, 'd'}, | |
80 | { "config_file", required_argument, NULL, 'f'}, | |
c3aac6ff | 81 | { "pid_file", required_argument, NULL, 'i'}, |
82 | { "vty_addr", required_argument, NULL, 'A'}, | |
eb5d44eb | 83 | { "vty_port", required_argument, NULL, 'P'}, |
9e867fe6 | 84 | { "user", required_argument, NULL, 'u'}, |
eb5d44eb | 85 | { "version", no_argument, NULL, 'v'}, |
86 | { "help", no_argument, NULL, 'h'}, | |
87 | { 0 } | |
88 | }; | |
89 | ||
90 | /* Configuration file and directory. */ | |
91 | char config_current[] = ISISD_DEFAULT_CONFIG; | |
92 | char config_default[] = SYSCONFDIR ISISD_DEFAULT_CONFIG; | |
93 | char *config_file = NULL; | |
94 | ||
95 | /* isisd program name. */ | |
96 | char *progname; | |
97 | ||
98 | int daemon_mode = 0; | |
99 | ||
100 | /* Master of threads. */ | |
101 | struct thread_master *master; | |
102 | ||
c3aac6ff | 103 | /* Process ID saved for use by init system */ |
104 | char *pid_file = PATH_ISISD_PID; | |
eb5d44eb | 105 | |
106 | /* for reload */ | |
107 | char _cwd[64]; | |
108 | char _progpath[64]; | |
109 | int _argc; | |
110 | char **_argv; | |
111 | char **_envp; | |
112 | ||
113 | ||
114 | /* Help information display. */ | |
115 | static void | |
116 | usage (int status) | |
117 | { | |
118 | if (status != 0) | |
119 | fprintf (stderr, "Try `%s --help' for more information.\n", progname); | |
120 | else | |
121 | { | |
122 | printf ("Usage : %s [OPTION...]\n\n\ | |
123 | Daemon which manages IS-IS routing\n\n\ | |
124 | -d, --daemon Runs in daemon mode\n\ | |
125 | -f, --config_file Set configuration file name\n\ | |
c3aac6ff | 126 | -i, --pid_file Set process identifier file name\n\ |
127 | -A, --vty_addr Set vty's bind address\n\ | |
eb5d44eb | 128 | -P, --vty_port Set vty's port number\n\ |
9e867fe6 | 129 | -u, --user User and group to run as\n\ |
eb5d44eb | 130 | -v, --version Print program version\n\ |
131 | -h, --help Display this help and exit\n\ | |
132 | \n\ | |
133 | Report bugs to sambo@cs.tut.fi\n", progname); | |
134 | } | |
135 | ||
136 | exit (status); | |
137 | } | |
138 | ||
139 | ||
140 | void | |
141 | reload () | |
142 | { | |
143 | zlog_info ("Reload"); | |
144 | /* FIXME: Clean up func call here */ | |
145 | vty_finish (); | |
146 | execve (_progpath, _argv, _envp); | |
147 | } | |
148 | ||
149 | void | |
150 | terminate (int i) | |
151 | { | |
152 | exit (i); | |
153 | } | |
154 | ||
155 | /* | |
156 | * Signal handlers | |
157 | */ | |
2d75d052 | 158 | |
eb5d44eb | 159 | void |
2d75d052 | 160 | sighup (void) |
eb5d44eb | 161 | { |
162 | zlog_info ("SIGHUP received"); | |
163 | reload (); | |
164 | ||
165 | return; | |
166 | } | |
167 | ||
168 | void | |
2d75d052 | 169 | sigint (void) |
eb5d44eb | 170 | { |
171 | zlog_info ("SIGINT received"); | |
172 | terminate (0); | |
173 | ||
174 | return; | |
175 | } | |
176 | ||
177 | void | |
2d75d052 | 178 | sigterm (void) |
eb5d44eb | 179 | { |
180 | zlog_info ("SIGTERM received"); | |
181 | terminate (0); | |
182 | } | |
183 | ||
184 | void | |
2d75d052 | 185 | sigusr1 (void) |
eb5d44eb | 186 | { |
187 | zlog_info ("SIGUSR1 received"); | |
188 | zlog_rotate (NULL); | |
189 | } | |
190 | ||
2d75d052 | 191 | struct quagga_signal_t isisd_signals[] = |
192 | { | |
193 | { | |
194 | .signal = SIGHUP, | |
195 | .handler = &sighup, | |
196 | }, | |
197 | { | |
198 | .signal = SIGUSR1, | |
199 | .handler = &sigusr1, | |
200 | }, | |
201 | { | |
202 | .signal = SIGINT, | |
203 | .handler = &sigint, | |
204 | }, | |
205 | { | |
206 | .signal = SIGTERM, | |
207 | .handler = &sigterm, | |
208 | }, | |
209 | }; | |
eb5d44eb | 210 | |
211 | /* | |
212 | * Main routine of isisd. Parse arguments and handle IS-IS state machine. | |
213 | */ | |
214 | int | |
215 | main (int argc, char **argv, char **envp) | |
216 | { | |
217 | char *p; | |
218 | int opt, vty_port = ISISD_VTY_PORT; | |
219 | struct thread thread; | |
220 | char *config_file = NULL; | |
221 | char *vty_addr = NULL; | |
222 | ||
223 | /* Get the programname without the preceding path. */ | |
224 | progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]); | |
225 | ||
226 | zlog_default = openzlog (progname, ZLOG_NOLOG, ZLOG_ISIS, | |
227 | LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON); | |
228 | ||
229 | ||
230 | /* for reload */ | |
231 | _argc = argc; | |
232 | _argv = argv; | |
233 | _envp = envp; | |
234 | getcwd (_cwd, sizeof (_cwd)); | |
235 | if (*argv[0] == '.') | |
236 | snprintf (_progpath, sizeof (_progpath), "%s/%s", _cwd, _argv[0]); | |
237 | else | |
238 | snprintf (_progpath, sizeof (_progpath), "%s", argv[0]); | |
239 | ||
240 | /* Command line argument treatment. */ | |
241 | while (1) | |
242 | { | |
c3aac6ff | 243 | opt = getopt_long (argc, argv, "df:i:hA:p:P:u:v", longopts, 0); |
eb5d44eb | 244 | |
245 | if (opt == EOF) | |
246 | break; | |
247 | ||
248 | switch (opt) | |
249 | { | |
250 | case 0: | |
251 | break; | |
252 | case 'd': | |
253 | daemon_mode = 1; | |
254 | break; | |
255 | case 'f': | |
256 | config_file = optarg; | |
257 | break; | |
c3aac6ff | 258 | case 'i': |
259 | pid_file = optarg; | |
260 | break; | |
eb5d44eb | 261 | case 'A': |
262 | vty_addr = optarg; | |
263 | break; | |
264 | case 'P': | |
9e867fe6 | 265 | /* Deal with atoi() returning 0 on failure, and isisd not |
266 | listening on isisd port... */ | |
267 | if (strcmp(optarg, "0") == 0) | |
268 | { | |
269 | vty_port = 0; | |
270 | break; | |
271 | } | |
eb5d44eb | 272 | vty_port = atoi (optarg); |
9e867fe6 | 273 | vty_port = (vty_port ? vty_port : ISISD_VTY_PORT); |
274 | break; | |
275 | case 'u': | |
276 | isisd_privs.user = isisd_privs.group = optarg; | |
277 | break; | |
eb5d44eb | 278 | break; |
279 | case 'v': | |
280 | printf("ISISd version %s\n", ISISD_VERSION); | |
281 | printf("Copyright (c) 2001-2002 Sampo Saaristo," | |
282 | " Ofer Wald and Hannes Gredler\n"); | |
283 | print_version ("Zebra"); | |
284 | exit (0); | |
285 | break; | |
286 | case 'h': | |
287 | usage (0); | |
288 | break; | |
289 | default: | |
290 | usage (1); | |
291 | break; | |
292 | } | |
293 | } | |
294 | ||
295 | /* thread master */ | |
296 | master = thread_master_create (); | |
297 | ||
298 | /* random seed from time */ | |
299 | srand(time(NULL)); | |
300 | ||
301 | /* | |
302 | * initializations | |
303 | */ | |
9e867fe6 | 304 | zprivs_init (&isisd_privs); |
2d75d052 | 305 | signal_init (master, Q_SIGC(isisd_signals), isisd_signals); |
eb5d44eb | 306 | cmd_init (1); |
9e867fe6 | 307 | vty_init (master); |
eb5d44eb | 308 | memory_init (); |
309 | isis_init (); | |
310 | dyn_cache_init (); | |
311 | sort_node (); | |
312 | ||
313 | /* parse config file */ | |
314 | /* this is needed three times! because we have interfaces before the areas */ | |
315 | vty_read_config (config_file, config_current, config_default); | |
316 | #if 0 | |
317 | vty_read_config (config_file, config_current, config_default); | |
318 | vty_read_config (config_file, config_current, config_default); | |
319 | #endif | |
320 | /* demonize */ | |
321 | if (daemon_mode) | |
322 | daemon (0, 0); | |
323 | ||
eb5d44eb | 324 | /* Process ID file creation. */ |
c3aac6ff | 325 | pid_output (pid_file); |
eb5d44eb | 326 | |
327 | /* Make isis vty socket. */ | |
9e867fe6 | 328 | vty_serv_sock (vty_addr, vty_port, ISIS_VTYSH_PATH); |
eb5d44eb | 329 | |
330 | /* Print banner. */ | |
9e867fe6 | 331 | #if defined(ZEBRA_VERSION) |
eb5d44eb | 332 | zlog_info ("ISISd %s starting: vty@%d", ZEBRA_VERSION, vty_port); |
9e867fe6 | 333 | #elif defined(QUAGGA_VERSION) |
334 | zlog_info ("Quagga-ISISd %s starting: vty@%d", QUAGGA_VERSION, vty_port); | |
335 | #endif | |
eb5d44eb | 336 | #ifdef HAVE_IPV6 |
337 | zlog_info ("IPv6 enabled"); | |
338 | #endif | |
339 | /* Start finite state machine. */ | |
340 | while (thread_fetch (master, &thread)) | |
341 | thread_call (&thread); | |
342 | ||
343 | /* Not reached. */ | |
344 | exit (0); | |
345 | } | |
346 | ||
347 | ||
348 | ||
349 | ||
350 | ||
351 | ||
352 | ||
353 | ||
354 | ||
355 |