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718e3744 | 1 | /* |
2 | * OSPFd main routine. | |
3 | * Copyright (C) 1998, 99 Kunihiro Ishiguro, Toshiaki Takada | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
19 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
20 | * 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "version.h" | |
26 | #include "getopt.h" | |
27 | #include "thread.h" | |
28 | #include "prefix.h" | |
29 | #include "linklist.h" | |
30 | #include "if.h" | |
31 | #include "vector.h" | |
32 | #include "vty.h" | |
33 | #include "command.h" | |
34 | #include "filter.h" | |
35 | #include "plist.h" | |
36 | #include "stream.h" | |
37 | #include "log.h" | |
38 | #include "memory.h" | |
edd7c245 | 39 | #include "privs.h" |
40 | #include "debug.h" | |
718e3744 | 41 | |
42 | #include "ospfd/ospfd.h" | |
43 | #include "ospfd/ospf_interface.h" | |
44 | #include "ospfd/ospf_asbr.h" | |
45 | #include "ospfd/ospf_lsa.h" | |
46 | #include "ospfd/ospf_lsdb.h" | |
47 | #include "ospfd/ospf_neighbor.h" | |
48 | #include "ospfd/ospf_dump.h" | |
49 | #include "ospfd/ospf_zebra.h" | |
50 | #include "ospfd/ospf_vty.h" | |
51 | ||
edd7c245 | 52 | /* ospfd privileges */ |
53 | zebra_capabilities_t _caps_p [] = | |
54 | { | |
55 | ZCAP_RAW, | |
56 | ZCAP_BIND, | |
57 | ZCAP_BROADCAST, | |
58 | ZCAP_ADMIN, | |
59 | }; | |
60 | ||
61 | struct zebra_privs_t ospfd_privs = | |
62 | { | |
63 | #if defined(ZEBRA_USER) && defined(ZEBRA_GROUP) | |
64 | .user = ZEBRA_USER, | |
65 | .group = ZEBRA_GROUP, | |
66 | #endif | |
67 | #if defined(VTY_GROUP) | |
68 | .vty_group = VTY_GROUP, | |
69 | #endif | |
70 | .caps_p = _caps_p, | |
71 | .cap_num_p = sizeof(_caps_p)/sizeof(_caps_p[0]), | |
72 | .cap_num_i = 0 | |
73 | }; | |
74 | ||
718e3744 | 75 | /* Configuration filename and directory. */ |
76 | char config_current[] = OSPF_DEFAULT_CONFIG; | |
77 | char config_default[] = SYSCONFDIR OSPF_DEFAULT_CONFIG; | |
78 | ||
79 | /* OSPFd options. */ | |
80 | struct option longopts[] = | |
81 | { | |
82 | { "daemon", no_argument, NULL, 'd'}, | |
83 | { "config_file", required_argument, NULL, 'f'}, | |
84 | { "pid_file", required_argument, NULL, 'i'}, | |
85 | { "log_mode", no_argument, NULL, 'l'}, | |
86 | { "help", no_argument, NULL, 'h'}, | |
87 | { "vty_addr", required_argument, NULL, 'A'}, | |
88 | { "vty_port", required_argument, NULL, 'P'}, | |
edd7c245 | 89 | { "user", required_argument, NULL, 'u'}, |
718e3744 | 90 | { "version", no_argument, NULL, 'v'}, |
91 | { 0 } | |
92 | }; | |
93 | ||
94 | /* OSPFd program name */ | |
95 | ||
96 | /* Master of threads. */ | |
97 | struct thread_master *master; | |
98 | ||
99 | /* Process ID saved for use by init system */ | |
100 | char *pid_file = PATH_OSPFD_PID; | |
101 | ||
102 | /* Help information display. */ | |
103 | static void | |
104 | usage (char *progname, int status) | |
105 | { | |
106 | if (status != 0) | |
107 | fprintf (stderr, "Try `%s --help' for more information.\n", progname); | |
108 | else | |
109 | { | |
110 | printf ("Usage : %s [OPTION...]\n\ | |
111 | Daemon which manages OSPF.\n\n\ | |
112 | -d, --daemon Runs in daemon mode\n\ | |
113 | -f, --config_file Set configuration file name\n\ | |
114 | -i, --pid_file Set process identifier file name\n\ | |
115 | -A, --vty_addr Set vty's bind address\n\ | |
116 | -P, --vty_port Set vty's port number\n\ | |
edd7c245 | 117 | -u, --user User and 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 | exit (status); | |
124 | } | |
125 | \f | |
126 | /* SIGHUP handler. */ | |
127 | void | |
128 | sighup (int sig) | |
129 | { | |
130 | zlog (NULL, LOG_INFO, "SIGHUP received"); | |
131 | } | |
132 | ||
133 | /* SIGINT handler. */ | |
134 | void | |
135 | sigint (int sig) | |
136 | { | |
137 | zlog (NULL, LOG_INFO, "Terminating on signal"); | |
138 | ||
139 | ospf_terminate (); | |
140 | ||
141 | exit (0); | |
142 | } | |
143 | ||
144 | /* SIGUSR1 handler. */ | |
145 | void | |
146 | sigusr1 (int sig) | |
147 | { | |
148 | zlog_rotate (NULL); | |
149 | } | |
150 | ||
151 | /* Signal wrapper. */ | |
152 | RETSIGTYPE * | |
153 | signal_set (int signo, void (*func)(int)) | |
154 | { | |
155 | int ret; | |
156 | struct sigaction sig; | |
157 | struct sigaction osig; | |
158 | ||
159 | sig.sa_handler = func; | |
160 | sigemptyset (&sig.sa_mask); | |
161 | sig.sa_flags = 0; | |
162 | #ifdef SA_RESTART | |
163 | sig.sa_flags |= SA_RESTART; | |
164 | #endif /* SA_RESTART */ | |
165 | ||
166 | ret = sigaction (signo, &sig, &osig); | |
167 | ||
168 | if (ret < 0) | |
169 | return (SIG_ERR); | |
170 | else | |
171 | return (osig.sa_handler); | |
172 | } | |
173 | ||
174 | /* Initialization of signal handles. */ | |
175 | void | |
176 | signal_init () | |
177 | { | |
178 | signal_set (SIGHUP, sighup); | |
179 | signal_set (SIGINT, sigint); | |
180 | signal_set (SIGTERM, sigint); | |
181 | signal_set (SIGPIPE, SIG_IGN); | |
182 | #ifdef SIGTSTP | |
183 | signal_set (SIGTSTP, SIG_IGN); | |
184 | #endif | |
185 | #ifdef SIGTTIN | |
186 | signal_set (SIGTTIN, SIG_IGN); | |
187 | #endif | |
188 | #ifdef SIGTTOU | |
189 | signal_set (SIGTTOU, SIG_IGN); | |
190 | #endif | |
191 | signal_set (SIGUSR1, sigusr1); | |
edd7c245 | 192 | #ifdef HAVE_GLIBC_BACKTRACE |
193 | signal_set (SIGBUS, debug_print_trace); | |
194 | signal_set (SIGSEGV, debug_print_trace); | |
195 | signal_set (SIGILL, debug_print_trace); | |
196 | #endif /* HAVE_GLIBC_BACKTRACE */ | |
718e3744 | 197 | } |
198 | \f | |
199 | /* OSPFd main routine. */ | |
200 | int | |
201 | main (int argc, char **argv) | |
202 | { | |
203 | char *p; | |
204 | char *vty_addr = NULL; | |
4fc4e7ab | 205 | int vty_port = OSPF_VTY_PORT; |
718e3744 | 206 | int daemon_mode = 0; |
207 | char *config_file = NULL; | |
208 | char *progname; | |
209 | struct thread thread; | |
210 | ||
211 | /* Set umask before anything for security */ | |
212 | umask (0027); | |
213 | ||
214 | /* get program name */ | |
215 | progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]); | |
216 | ||
217 | /* Invoked by a priviledged user? -- endo. */ | |
b3516a79 | 218 | if (geteuid () != 0) |
718e3744 | 219 | { |
220 | errno = EPERM; | |
221 | perror (progname); | |
222 | exit (1); | |
223 | } | |
224 | ||
225 | zlog_default = openzlog (progname, ZLOG_NOLOG, ZLOG_OSPF, | |
226 | LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON); | |
227 | ||
020709f9 | 228 | /* OSPF master init. */ |
229 | ospf_master_init (); | |
230 | ||
718e3744 | 231 | while (1) |
232 | { | |
233 | int opt; | |
234 | ||
edd7c245 | 235 | opt = getopt_long (argc, argv, "dlf:hA:P:u:v", longopts, 0); |
718e3744 | 236 | |
237 | if (opt == EOF) | |
238 | break; | |
239 | ||
240 | switch (opt) | |
241 | { | |
242 | case 0: | |
243 | break; | |
244 | case 'd': | |
245 | daemon_mode = 1; | |
246 | break; | |
247 | case 'f': | |
248 | config_file = optarg; | |
249 | break; | |
250 | case 'A': | |
251 | vty_addr = optarg; | |
252 | break; | |
253 | case 'i': | |
254 | pid_file = optarg; | |
255 | break; | |
256 | case 'P': | |
4fc4e7ab | 257 | /* Deal with atoi() returning 0 on failure, and ospfd not |
258 | listening on ospfd port... */ | |
259 | if (strcmp(optarg, "0") == 0) | |
260 | { | |
261 | vty_port = 0; | |
262 | break; | |
263 | } | |
264 | vty_port = atoi (optarg); | |
265 | vty_port = (vty_port ? vty_port : OSPF_VTY_PORT); | |
266 | break; | |
edd7c245 | 267 | case 'u': |
268 | ospfd_privs.group = ospfd_privs.user = optarg; | |
269 | break; | |
718e3744 | 270 | case 'v': |
271 | print_version (progname); | |
272 | exit (0); | |
273 | break; | |
274 | case 'h': | |
275 | usage (progname, 0); | |
276 | break; | |
277 | default: | |
278 | usage (progname, 1); | |
279 | break; | |
280 | } | |
281 | } | |
282 | ||
283 | /* Initializations. */ | |
020709f9 | 284 | master = om->master; |
718e3744 | 285 | |
286 | /* Library inits. */ | |
edd7c245 | 287 | zprivs_init (&ospfd_privs); |
718e3744 | 288 | signal_init (); |
289 | cmd_init (1); | |
290 | debug_init (); | |
291 | vty_init (); | |
292 | memory_init (); | |
293 | ||
294 | access_list_init (); | |
295 | prefix_list_init (); | |
296 | ||
297 | /* OSPFd inits. */ | |
298 | ospf_init (); | |
299 | ospf_if_init (); | |
300 | ospf_zebra_init (); | |
301 | ||
302 | /* OSPF vty inits. */ | |
303 | ospf_vty_init (); | |
304 | ospf_vty_show_init (); | |
305 | ||
306 | ospf_route_map_init (); | |
307 | #ifdef HAVE_SNMP | |
308 | ospf_snmp_init (); | |
309 | #endif /* HAVE_SNMP */ | |
310 | #ifdef HAVE_OPAQUE_LSA | |
311 | ospf_opaque_init (); | |
312 | #endif /* HAVE_OPAQUE_LSA */ | |
313 | ||
314 | sort_node (); | |
315 | ||
316 | /* Get configuration file. */ | |
317 | vty_read_config (config_file, config_current, config_default); | |
318 | ||
319 | /* Change to the daemon program. */ | |
320 | if (daemon_mode) | |
321 | daemon (0, 0); | |
322 | ||
323 | /* Process id file create. */ | |
324 | pid_output (pid_file); | |
325 | ||
326 | /* Create VTY socket */ | |
4fc4e7ab | 327 | vty_serv_sock (vty_addr, vty_port, OSPF_VTYSH_PATH); |
718e3744 | 328 | |
b3516a79 | 329 | #ifdef DEBUG |
718e3744 | 330 | /* Print banner. */ |
331 | zlog (NULL, LOG_INFO, "OSPFd (%s) starts", ZEBRA_VERSION); | |
b3516a79 | 332 | #endif |
718e3744 | 333 | |
334 | /* Fetch next active thread. */ | |
335 | while (thread_fetch (master, &thread)) | |
336 | thread_call (&thread); | |
337 | ||
338 | /* Not reached. */ | |
339 | exit (0); | |
340 | } | |
341 |