File: | src/usr.sbin/ospf6d/ospf6d.c |
Warning: | line 162, column 2 Value stored to 'argv' is never read |
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1 | /* $OpenBSD: ospf6d.c,v 1.51 2021/09/06 13:32:18 deraadt Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org> |
5 | * Copyright (c) 2004, 2007 Esben Norby <norby@openbsd.org> |
6 | * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> |
7 | * |
8 | * Permission to use, copy, modify, and distribute this software for any |
9 | * purpose with or without fee is hereby granted, provided that the above |
10 | * copyright notice and this permission notice appear in all copies. |
11 | * |
12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
13 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
14 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
15 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
16 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
17 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
18 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
19 | */ |
20 | |
21 | #include <sys/types.h> |
22 | #include <sys/socket.h> |
23 | #include <sys/queue.h> |
24 | #include <sys/time.h> |
25 | #include <sys/stat.h> |
26 | #include <sys/wait.h> |
27 | #include <sys/sysctl.h> |
28 | #include <syslog.h> |
29 | |
30 | #include <netinet/in.h> |
31 | #include <arpa/inet.h> |
32 | #include <net/if_types.h> |
33 | |
34 | #include <event.h> |
35 | #include <err.h> |
36 | #include <errno(*__errno()).h> |
37 | #include <pwd.h> |
38 | #include <stdio.h> |
39 | #include <stdlib.h> |
40 | #include <string.h> |
41 | #include <signal.h> |
42 | #include <unistd.h> |
43 | |
44 | #include "ospf6d.h" |
45 | #include "ospf6.h" |
46 | #include "ospfe.h" |
47 | #include "control.h" |
48 | #include "log.h" |
49 | #include "rde.h" |
50 | |
51 | void main_sig_handler(int, short, void *); |
52 | __dead__attribute__((__noreturn__)) void usage(void); |
53 | __dead__attribute__((__noreturn__)) void ospfd_shutdown(void); |
54 | |
55 | void main_dispatch_ospfe(int, short, void *); |
56 | void main_dispatch_rde(int, short, void *); |
57 | |
58 | int ospf_reload(void); |
59 | int ospf_sendboth(enum imsg_type, void *, u_int16_t); |
60 | int merge_interfaces(struct area *, struct area *); |
61 | struct iface *iface_lookup(struct area *, struct iface *); |
62 | |
63 | int pipe_parent2ospfe[2]; |
64 | int pipe_parent2rde[2]; |
65 | int pipe_ospfe2rde[2]; |
66 | |
67 | enum ospfd_process ospfd_process; |
68 | struct ospfd_conf *ospfd_conf = NULL((void*)0); |
69 | static struct imsgev *iev_ospfe; |
70 | static struct imsgev *iev_rde; |
71 | char *conffile; |
72 | |
73 | pid_t ospfe_pid = 0; |
74 | pid_t rde_pid = 0; |
75 | |
76 | /* ARGSUSED */ |
77 | void |
78 | main_sig_handler(int sig, short event, void *arg) |
79 | { |
80 | /* signal handler rules don't apply, libevent decouples for us */ |
81 | switch (sig) { |
82 | case SIGTERM15: |
83 | case SIGINT2: |
84 | ospfd_shutdown(); |
85 | /* NOTREACHED */ |
86 | case SIGHUP1: |
87 | if (ospf_reload() == -1) |
88 | log_warnx("configuration reload failed"); |
89 | else |
90 | log_debug("configuration reloaded"); |
91 | break; |
92 | default: |
93 | fatalx("unexpected signal"); |
94 | /* NOTREACHED */ |
95 | } |
96 | } |
97 | |
98 | __dead__attribute__((__noreturn__)) void |
99 | usage(void) |
100 | { |
101 | extern char *__progname; |
102 | |
103 | fprintf(stderr(&__sF[2]), "usage: %s [-dnv] [-D macro=value]" |
104 | " [-f file] [-s socket]\n", |
105 | __progname); |
106 | exit(1); |
107 | } |
108 | |
109 | int |
110 | main(int argc, char *argv[]) |
111 | { |
112 | struct event ev_sigint, ev_sigterm, ev_sighup; |
113 | int ch, opts = 0; |
114 | int debug = 0; |
115 | int ipforwarding; |
116 | int mib[4]; |
117 | size_t len; |
118 | char *sockname = NULL((void*)0); |
119 | int control_fd; |
120 | |
121 | conffile = CONF_FILE"/etc/ospf6d.conf"; |
122 | ospfd_process = PROC_MAIN; |
123 | |
124 | log_init(1, LOG_DAEMON(3<<3)); /* log to stderr until daemonized */ |
125 | log_procinit(log_procnames[ospfd_process]); |
126 | |
127 | while ((ch = getopt(argc, argv, "cdD:f:s:nv")) != -1) { |
128 | switch (ch) { |
129 | case 'c': |
130 | opts |= OSPFD_OPT_FORCE_DEMOTE0x00000010; |
131 | break; |
132 | case 'd': |
133 | debug = 1; |
134 | break; |
135 | case 'D': |
136 | if (cmdline_symset(optarg) < 0) |
137 | log_warnx("could not parse macro definition %s", |
138 | optarg); |
139 | break; |
140 | case 'f': |
141 | conffile = optarg; |
142 | break; |
143 | case 'n': |
144 | opts |= OSPFD_OPT_NOACTION0x00000004; |
145 | break; |
146 | case 's': |
147 | sockname = optarg; |
148 | break; |
149 | case 'v': |
150 | if (opts & OSPFD_OPT_VERBOSE0x00000001) |
151 | opts |= OSPFD_OPT_VERBOSE20x00000002; |
152 | opts |= OSPFD_OPT_VERBOSE0x00000001; |
153 | log_setverbose(1); |
154 | break; |
155 | default: |
156 | usage(); |
157 | /* NOTREACHED */ |
158 | } |
159 | } |
160 | |
161 | argc -= optind; |
162 | argv += optind; |
Value stored to 'argv' is never read | |
163 | if (argc > 0) |
164 | usage(); |
165 | |
166 | mib[0] = CTL_NET4; |
167 | mib[1] = PF_INET624; |
168 | mib[2] = IPPROTO_IPV641; |
169 | mib[3] = IPCTL_FORWARDING1; |
170 | len = sizeof(ipforwarding); |
171 | if (sysctl(mib, 4, &ipforwarding, &len, NULL((void*)0), 0) == -1) |
172 | err(1, "sysctl"); |
173 | |
174 | if (ipforwarding != 1) { |
175 | log_warnx("WARNING: IPv6 forwarding NOT enabled, " |
176 | "running as stub router"); |
177 | opts |= OSPFD_OPT_STUB_ROUTER0x00000008; |
178 | } |
179 | |
180 | /* prepare and fetch interfaces early */ |
181 | if_init(); |
182 | |
183 | /* parse config file */ |
184 | if ((ospfd_conf = parse_config(conffile, opts)) == NULL((void*)0) ) |
185 | exit(1); |
186 | |
187 | if (sockname == NULL((void*)0)) { |
188 | if (asprintf(&sockname, "%s.%d", OSPF6D_SOCKET"/var/run/ospf6d.sock", |
189 | ospfd_conf->rdomain) == -1) |
190 | err(1, "asprintf"); |
191 | } |
192 | |
193 | ospfd_conf->csock = sockname; |
194 | |
195 | if (ospfd_conf->opts & OSPFD_OPT_NOACTION0x00000004) { |
196 | if (ospfd_conf->opts & OSPFD_OPT_VERBOSE0x00000001) |
197 | print_config(ospfd_conf); |
198 | else |
199 | fprintf(stderr(&__sF[2]), "configuration OK\n"); |
200 | exit(0); |
201 | } |
202 | |
203 | /* check for root privileges */ |
204 | if (geteuid()) |
205 | errx(1, "need root privileges"); |
206 | |
207 | /* check for ospfd user */ |
208 | if (getpwnam(OSPF6D_USER"_ospf6d") == NULL((void*)0)) |
209 | errx(1, "unknown user %s", OSPF6D_USER"_ospf6d"); |
210 | |
211 | log_init(debug, LOG_DAEMON(3<<3)); |
212 | log_setverbose(ospfd_conf->opts & OSPFD_OPT_VERBOSE0x00000001); |
213 | |
214 | if ((control_check(ospfd_conf->csock)) == -1) |
215 | fatalx("ospf6d already running"); |
216 | |
217 | if (!debug) |
218 | daemon(1, 0); |
219 | |
220 | log_info("startup"); |
221 | |
222 | if (socketpair(AF_UNIX1, SOCK_STREAM1 | SOCK_CLOEXEC0x8000 | SOCK_NONBLOCK0x4000, |
223 | PF_UNSPEC0, pipe_parent2ospfe) == -1) |
224 | fatal("socketpair"); |
225 | if (socketpair(AF_UNIX1, SOCK_STREAM1 | SOCK_CLOEXEC0x8000 | SOCK_NONBLOCK0x4000, |
226 | PF_UNSPEC0, pipe_parent2rde) == -1) |
227 | fatal("socketpair"); |
228 | if (socketpair(AF_UNIX1, SOCK_STREAM1 | SOCK_CLOEXEC0x8000 | SOCK_NONBLOCK0x4000, |
229 | PF_UNSPEC0, pipe_ospfe2rde) == -1) |
230 | fatal("socketpair"); |
231 | |
232 | /* start children */ |
233 | rde_pid = rde(ospfd_conf, pipe_parent2rde, pipe_ospfe2rde, |
234 | pipe_parent2ospfe); |
235 | ospfe_pid = ospfe(ospfd_conf, pipe_parent2ospfe, pipe_ospfe2rde, |
236 | pipe_parent2rde); |
237 | |
238 | event_init(); |
239 | |
240 | /* setup signal handler */ |
241 | signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL)event_set(&ev_sigint, 2, 0x08|0x10, main_sig_handler, ((void *)0)); |
242 | signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL)event_set(&ev_sigterm, 15, 0x08|0x10, main_sig_handler, ( (void*)0)); |
243 | signal_set(&ev_sighup, SIGHUP, main_sig_handler, NULL)event_set(&ev_sighup, 1, 0x08|0x10, main_sig_handler, ((void *)0)); |
244 | signal_add(&ev_sigint, NULL)event_add(&ev_sigint, ((void*)0)); |
245 | signal_add(&ev_sigterm, NULL)event_add(&ev_sigterm, ((void*)0)); |
246 | signal_add(&ev_sighup, NULL)event_add(&ev_sighup, ((void*)0)); |
247 | signal(SIGPIPE13, SIG_IGN(void (*)(int))1); |
248 | |
249 | /* setup pipes to children */ |
250 | close(pipe_parent2ospfe[1]); |
251 | close(pipe_parent2rde[1]); |
252 | close(pipe_ospfe2rde[0]); |
253 | close(pipe_ospfe2rde[1]); |
254 | |
255 | if ((iev_ospfe = malloc(sizeof(struct imsgev))) == NULL((void*)0) || |
256 | (iev_rde = malloc(sizeof(struct imsgev))) == NULL((void*)0)) |
257 | fatal(NULL((void*)0)); |
258 | imsg_init(&iev_ospfe->ibuf, pipe_parent2ospfe[0]); |
259 | iev_ospfe->handler = main_dispatch_ospfe; |
260 | imsg_init(&iev_rde->ibuf, pipe_parent2rde[0]); |
261 | iev_rde->handler = main_dispatch_rde; |
262 | |
263 | /* setup event handler */ |
264 | iev_ospfe->events = EV_READ0x02; |
265 | event_set(&iev_ospfe->ev, iev_ospfe->ibuf.fd, iev_ospfe->events, |
266 | iev_ospfe->handler, iev_ospfe); |
267 | event_add(&iev_ospfe->ev, NULL((void*)0)); |
268 | |
269 | iev_rde->events = EV_READ0x02; |
270 | event_set(&iev_rde->ev, iev_rde->ibuf.fd, iev_rde->events, |
271 | iev_rde->handler, iev_rde); |
272 | event_add(&iev_rde->ev, NULL((void*)0)); |
273 | |
274 | if ((control_fd = control_init(ospfd_conf->csock)) == -1) |
275 | fatalx("control socket setup failed"); |
276 | main_imsg_compose_ospfe_fd(IMSG_CONTROLFD, 0, control_fd); |
277 | |
278 | /* no filesystem visibility */ |
279 | if (unveil("/", "") == -1) |
280 | fatal("unveil /"); |
281 | if (unveil(NULL((void*)0), NULL((void*)0)) == -1) |
282 | fatal("unveil"); |
283 | |
284 | if (kr_init(!(ospfd_conf->flags & OSPFD_FLAG_NO_FIB_UPDATE0x0001), |
285 | ospfd_conf->rdomain, ospfd_conf->redist_label_or_prefix, |
286 | ospfd_conf->fib_priority) == -1) |
287 | fatalx("kr_init failed"); |
288 | |
289 | event_dispatch(); |
290 | |
291 | ospfd_shutdown(); |
292 | /* NOTREACHED */ |
293 | return (0); |
294 | } |
295 | |
296 | __dead__attribute__((__noreturn__)) void |
297 | ospfd_shutdown(void) |
298 | { |
299 | pid_t pid; |
300 | int status; |
301 | |
302 | /* close pipes */ |
303 | msgbuf_clear(&iev_ospfe->ibuf.w); |
304 | close(iev_ospfe->ibuf.fd); |
305 | msgbuf_clear(&iev_rde->ibuf.w); |
306 | close(iev_rde->ibuf.fd); |
307 | |
308 | control_cleanup(); |
309 | kr_shutdown(); |
310 | carp_demote_shutdown(); |
311 | |
312 | log_debug("waiting for children to terminate"); |
313 | do { |
314 | pid = wait(&status); |
315 | if (pid == -1) { |
316 | if (errno(*__errno()) != EINTR4 && errno(*__errno()) != ECHILD10) |
317 | fatal("wait"); |
318 | } else if (WIFSIGNALED(status)(((status) & 0177) != 0177 && ((status) & 0177 ) != 0)) |
319 | log_warnx("%s terminated; signal %d", |
320 | (pid == rde_pid) ? "route decision engine" : |
321 | "ospf engine", WTERMSIG(status)(((status) & 0177))); |
322 | } while (pid != -1 || (pid == -1 && errno(*__errno()) == EINTR4)); |
323 | |
324 | free(iev_ospfe); |
325 | free(iev_rde); |
326 | free(ospfd_conf); |
327 | |
328 | log_info("terminating"); |
329 | exit(0); |
330 | } |
331 | |
332 | /* imsg handling */ |
333 | /* ARGSUSED */ |
334 | void |
335 | main_dispatch_ospfe(int fd, short event, void *bula) |
336 | { |
337 | struct imsgev *iev = bula; |
338 | struct imsgbuf *ibuf = &iev->ibuf; |
339 | struct imsg imsg; |
340 | struct demote_msg dmsg; |
341 | ssize_t n; |
342 | int shut = 0, verbose; |
343 | |
344 | if (event & EV_READ0x02) { |
345 | if ((n = imsg_read(ibuf)) == -1 && errno(*__errno()) != EAGAIN35) |
346 | fatal("imsg_read error"); |
347 | if (n == 0) /* connection closed */ |
348 | shut = 1; |
349 | } |
350 | if (event & EV_WRITE0x04) { |
351 | if ((n = msgbuf_write(&ibuf->w)) == -1 && errno(*__errno()) != EAGAIN35) |
352 | fatal("msgbuf_write"); |
353 | if (n == 0) /* connection closed */ |
354 | shut = 1; |
355 | } |
356 | |
357 | for (;;) { |
358 | if ((n = imsg_get(ibuf, &imsg)) == -1) |
359 | fatal("imsg_get"); |
360 | |
361 | if (n == 0) |
362 | break; |
363 | |
364 | switch (imsg.hdr.type) { |
365 | case IMSG_CTL_RELOAD: |
366 | if (ospf_reload() == -1) |
367 | log_warnx("configuration reload failed"); |
368 | else |
369 | log_debug("configuration reloaded"); |
370 | break; |
371 | case IMSG_CTL_FIB_COUPLE: |
372 | kr_fib_couple(); |
373 | break; |
374 | case IMSG_CTL_FIB_DECOUPLE: |
375 | kr_fib_decouple(); |
376 | break; |
377 | case IMSG_CTL_KROUTE: |
378 | case IMSG_CTL_KROUTE_ADDR: |
379 | kr_show_route(&imsg); |
380 | break; |
381 | case IMSG_DEMOTE: |
382 | if (imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr) != sizeof(dmsg)) |
383 | fatalx("invalid size of OE request"); |
384 | memcpy(&dmsg, imsg.data, sizeof(dmsg)); |
385 | carp_demote_set(dmsg.demote_group, dmsg.level); |
386 | break; |
387 | case IMSG_CTL_LOG_VERBOSE: |
388 | /* already checked by ospfe */ |
389 | memcpy(&verbose, imsg.data, sizeof(verbose)); |
390 | log_setverbose(verbose); |
391 | break; |
392 | default: |
393 | log_debug("main_dispatch_ospfe: error handling imsg %d", |
394 | imsg.hdr.type); |
395 | break; |
396 | } |
397 | imsg_free(&imsg); |
398 | } |
399 | if (!shut) |
400 | imsg_event_add(iev); |
401 | else { |
402 | /* this pipe is dead, so remove the event handler */ |
403 | event_del(&iev->ev); |
404 | event_loopexit(NULL((void*)0)); |
405 | } |
406 | } |
407 | |
408 | /* ARGSUSED */ |
409 | void |
410 | main_dispatch_rde(int fd, short event, void *bula) |
411 | { |
412 | struct imsgev *iev = bula; |
413 | struct imsgbuf *ibuf = &iev->ibuf; |
414 | struct imsg imsg; |
415 | ssize_t n; |
416 | int count, shut = 0; |
417 | |
418 | if (event & EV_READ0x02) { |
419 | if ((n = imsg_read(ibuf)) == -1 && errno(*__errno()) != EAGAIN35) |
420 | fatal("imsg_read error"); |
421 | if (n == 0) /* connection closed */ |
422 | shut = 1; |
423 | } |
424 | if (event & EV_WRITE0x04) { |
425 | if ((n = msgbuf_write(&ibuf->w)) == -1 && errno(*__errno()) != EAGAIN35) |
426 | fatal("msgbuf_write"); |
427 | if (n == 0) /* connection closed */ |
428 | shut = 1; |
429 | } |
430 | |
431 | for (;;) { |
432 | if ((n = imsg_get(ibuf, &imsg)) == -1) |
433 | fatal("imsg_get"); |
434 | |
435 | if (n == 0) |
436 | break; |
437 | |
438 | switch (imsg.hdr.type) { |
439 | case IMSG_KROUTE_CHANGE: |
440 | count = (imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr)) / |
441 | sizeof(struct kroute); |
442 | if (kr_change(imsg.data, count)) |
443 | log_warn("main_dispatch_rde: error changing " |
444 | "route"); |
445 | break; |
446 | case IMSG_KROUTE_DELETE: |
447 | if (kr_delete(imsg.data)) |
448 | log_warn("main_dispatch_rde: error deleting " |
449 | "route"); |
450 | break; |
451 | default: |
452 | log_debug("main_dispatch_rde: error handling imsg %d", |
453 | imsg.hdr.type); |
454 | break; |
455 | } |
456 | imsg_free(&imsg); |
457 | } |
458 | if (!shut) |
459 | imsg_event_add(iev); |
460 | else { |
461 | /* this pipe is dead, so remove the event handler */ |
462 | event_del(&iev->ev); |
463 | event_loopexit(NULL((void*)0)); |
464 | } |
465 | } |
466 | |
467 | void |
468 | main_imsg_compose_ospfe(int type, pid_t pid, void *data, u_int16_t datalen) |
469 | { |
470 | if (iev_ospfe == NULL((void*)0)) |
471 | return; |
472 | imsg_compose_event(iev_ospfe, type, 0, pid, -1, data, datalen); |
473 | } |
474 | |
475 | void |
476 | main_imsg_compose_ospfe_fd(int type, pid_t pid, int fd) |
477 | { |
478 | if (iev_ospfe == NULL((void*)0)) |
479 | return; |
480 | imsg_compose_event(iev_ospfe, type, 0, pid, fd, NULL((void*)0), 0); |
481 | } |
482 | |
483 | void |
484 | main_imsg_compose_rde(int type, pid_t pid, void *data, u_int16_t datalen) |
485 | { |
486 | if (iev_rde == NULL((void*)0)) |
487 | return; |
488 | imsg_compose_event(iev_rde, type, 0, pid, -1, data, datalen); |
489 | } |
490 | |
491 | void |
492 | imsg_event_add(struct imsgev *iev) |
493 | { |
494 | iev->events = EV_READ0x02; |
495 | if (iev->ibuf.w.queued) |
496 | iev->events |= EV_WRITE0x04; |
497 | |
498 | event_del(&iev->ev); |
499 | event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev); |
500 | event_add(&iev->ev, NULL((void*)0)); |
501 | } |
502 | |
503 | int |
504 | imsg_compose_event(struct imsgev *iev, u_int16_t type, u_int32_t peerid, |
505 | pid_t pid, int fd, void *data, u_int16_t datalen) |
506 | { |
507 | int ret; |
508 | |
509 | if ((ret = imsg_compose(&iev->ibuf, type, peerid, |
510 | pid, fd, data, datalen)) != -1) |
511 | imsg_event_add(iev); |
512 | return (ret); |
513 | } |
514 | |
515 | int |
516 | ospf_redistribute(struct kroute *kr, u_int32_t *metric) |
517 | { |
518 | struct redistribute *r; |
519 | struct in6_addr ina, inb; |
520 | struct iface *iface; |
521 | u_int8_t is_default = 0; |
522 | int depend_ok; |
523 | |
524 | /* only allow ::/0 via REDIST_DEFAULT */ |
525 | if (IN6_IS_ADDR_UNSPECIFIED(&kr->prefix)((*(const u_int32_t *)(const void *)(&(&kr->prefix )->__u6_addr.__u6_addr8[0]) == 0) && (*(const u_int32_t *)(const void *)(&(&kr->prefix)->__u6_addr.__u6_addr8 [4]) == 0) && (*(const u_int32_t *)(const void *)(& (&kr->prefix)->__u6_addr.__u6_addr8[8]) == 0) && (*(const u_int32_t *)(const void *)(&(&kr->prefix )->__u6_addr.__u6_addr8[12]) == 0)) && kr->prefixlen == 0) |
526 | is_default = 1; |
527 | |
528 | SIMPLEQ_FOREACH(r, &ospfd_conf->redist_list, entry)for((r) = ((&ospfd_conf->redist_list)->sqh_first); ( r) != ((void*)0); (r) = ((r)->entry.sqe_next)) { |
529 | if (r->dependon[0] != '\0') { |
530 | if ((iface = if_findname(r->dependon))) |
531 | depend_ok = ifstate_is_up(iface); |
532 | else |
533 | depend_ok = 0; |
534 | } else |
535 | depend_ok = 1; |
536 | |
537 | switch (r->type & ~REDIST_NO0x10) { |
538 | case REDIST_LABEL0x04: |
539 | if (kr->rtlabel == r->label) { |
540 | *metric = depend_ok ? r->metric : |
541 | r->metric | MAX_METRIC65535; |
542 | return (r->type & REDIST_NO0x10 ? 0 : 1); |
543 | } |
544 | break; |
545 | case REDIST_STATIC0x02: |
546 | /* |
547 | * Dynamic routes are not redistributable. Placed here |
548 | * so that link local addresses can be redistributed |
549 | * via a rtlabel. |
550 | */ |
551 | if (is_default) |
552 | continue; |
553 | if (kr->flags & F_DYNAMIC0x0040) |
554 | continue; |
555 | if (kr->flags & F_STATIC0x0020) { |
556 | *metric = depend_ok ? r->metric : |
557 | r->metric | MAX_METRIC65535; |
558 | return (r->type & REDIST_NO0x10 ? 0 : 1); |
559 | } |
560 | break; |
561 | case REDIST_CONNECTED0x01: |
562 | if (is_default) |
563 | continue; |
564 | if (kr->flags & F_DYNAMIC0x0040) |
565 | continue; |
566 | if (kr->flags & F_CONNECTED0x0008) { |
567 | *metric = depend_ok ? r->metric : |
568 | r->metric | MAX_METRIC65535; |
569 | return (r->type & REDIST_NO0x10 ? 0 : 1); |
570 | } |
571 | break; |
572 | case REDIST_ADDR0x08: |
573 | if (kr->flags & F_DYNAMIC0x0040) |
574 | continue; |
575 | |
576 | if (IN6_IS_ADDR_UNSPECIFIED(&r->addr)((*(const u_int32_t *)(const void *)(&(&r->addr)-> __u6_addr.__u6_addr8[0]) == 0) && (*(const u_int32_t * )(const void *)(&(&r->addr)->__u6_addr.__u6_addr8 [4]) == 0) && (*(const u_int32_t *)(const void *)(& (&r->addr)->__u6_addr.__u6_addr8[8]) == 0) && (*(const u_int32_t *)(const void *)(&(&r->addr)-> __u6_addr.__u6_addr8[12]) == 0)) && |
577 | r->prefixlen == 0) { |
578 | if (is_default) { |
579 | *metric = depend_ok ? r->metric : |
580 | r->metric | MAX_METRIC65535; |
581 | return (r->type & REDIST_NO0x10 ? 0 : 1); |
582 | } else |
583 | return (0); |
584 | } |
585 | |
586 | inet6applymask(&ina, &kr->prefix, r->prefixlen); |
587 | inet6applymask(&inb, &r->addr, r->prefixlen); |
588 | if (IN6_ARE_ADDR_EQUAL(&ina, &inb)(memcmp(&(&ina)->__u6_addr.__u6_addr8[0], &(& inb)->__u6_addr.__u6_addr8[0], sizeof(struct in6_addr)) == 0) && |
589 | kr->prefixlen >= r->prefixlen) { |
590 | *metric = depend_ok ? r->metric : |
591 | r->metric | MAX_METRIC65535; |
592 | return (r->type & REDIST_NO0x10 ? 0 : 1); |
593 | } |
594 | break; |
595 | case REDIST_DEFAULT0x20: |
596 | if (is_default) { |
597 | *metric = depend_ok ? r->metric : |
598 | r->metric | MAX_METRIC65535; |
599 | return (r->type & REDIST_NO0x10 ? 0 : 1); |
600 | } |
601 | break; |
602 | } |
603 | } |
604 | |
605 | return (0); |
606 | } |
607 | |
608 | int |
609 | ospf_reload(void) |
610 | { |
611 | #ifdef notyet |
612 | struct area *area; |
613 | struct ospfd_conf *xconf; |
614 | |
615 | if ((xconf = parse_config(conffile, ospfd_conf->opts)) == NULL((void*)0)) |
616 | return (-1); |
617 | |
618 | /* XXX bail out if router-id changed */ |
619 | |
620 | /* send config to childs */ |
621 | if (ospf_sendboth(IMSG_RECONF_CONF, xconf, sizeof(*xconf)) == -1) |
622 | return (-1); |
623 | |
624 | /* send areas, interfaces happen out of band */ |
625 | LIST_FOREACH(area, &xconf->area_list, entry)for((area) = ((&xconf->area_list)->lh_first); (area )!= ((void*)0); (area) = ((area)->entry.le_next)) { |
626 | if (ospf_sendboth(IMSG_RECONF_AREA, area, sizeof(*area)) == -1) |
627 | return (-1); |
628 | } |
629 | |
630 | if (ospf_sendboth(IMSG_RECONF_END, NULL((void*)0), 0) == -1) |
631 | return (-1); |
632 | |
633 | /* XXX send newly available interfaces to the childs */ |
634 | |
635 | merge_config(ospfd_conf, xconf); |
636 | /* update redistribute lists */ |
637 | kr_reload(ospfd_conf->redist_label_or_prefix); |
638 | return (0); |
639 | #else |
640 | return (-1); |
641 | #endif |
642 | } |
643 | |
644 | int |
645 | ospf_sendboth(enum imsg_type type, void *buf, u_int16_t len) |
646 | { |
647 | if (imsg_compose_event(iev_ospfe, type, 0, 0, -1, buf, len) == -1) |
648 | return (-1); |
649 | if (imsg_compose_event(iev_rde, type, 0, 0, -1, buf, len) == -1) |
650 | return (-1); |
651 | return (0); |
652 | } |
653 | |
654 | void |
655 | merge_config(struct ospfd_conf *conf, struct ospfd_conf *xconf) |
656 | { |
657 | struct area *a, *xa, *na; |
658 | struct iface *iface; |
659 | struct redistribute *r; |
660 | int rchange = 0; |
661 | |
662 | /* change of rtr_id needs a restart */ |
663 | conf->flags = xconf->flags; |
664 | conf->spf_delay = xconf->spf_delay; |
665 | conf->spf_hold_time = xconf->spf_hold_time; |
666 | if (SIMPLEQ_EMPTY(&conf->redist_list)(((&conf->redist_list)->sqh_first) == ((void*)0)) != |
667 | SIMPLEQ_EMPTY(&xconf->redist_list)(((&xconf->redist_list)->sqh_first) == ((void*)0))) |
668 | rchange = 1; |
669 | conf->redist_label_or_prefix = xconf->redist_label_or_prefix; |
670 | |
671 | if (ospfd_process == PROC_MAIN) { |
672 | /* main process does neither use areas nor interfaces */ |
673 | while ((r = SIMPLEQ_FIRST(&conf->redist_list)((&conf->redist_list)->sqh_first)) != NULL((void*)0)) { |
674 | SIMPLEQ_REMOVE_HEAD(&conf->redist_list, entry)do { if (((&conf->redist_list)->sqh_first = (&conf ->redist_list)->sqh_first->entry.sqe_next) == ((void *)0)) (&conf->redist_list)->sqh_last = &(&conf ->redist_list)->sqh_first; } while (0); |
675 | free(r); |
676 | } |
677 | SIMPLEQ_CONCAT(&conf->redist_list, &xconf->redist_list)do { if (!((((&xconf->redist_list))->sqh_first) == ( (void*)0))) { *(&conf->redist_list)->sqh_last = (& xconf->redist_list)->sqh_first; (&conf->redist_list )->sqh_last = (&xconf->redist_list)->sqh_last; do { ((&xconf->redist_list))->sqh_first = ((void*)0); ((&xconf->redist_list))->sqh_last = &((&xconf ->redist_list))->sqh_first; } while (0); } } while (0); |
678 | |
679 | /* adjust FIB priority if changed */ |
680 | if (conf->fib_priority != xconf->fib_priority) { |
681 | kr_fib_decouple(); |
682 | kr_fib_update_prio(xconf->fib_priority); |
683 | conf->fib_priority = xconf->fib_priority; |
684 | kr_fib_couple(); |
685 | } |
686 | |
687 | goto done; |
688 | } |
689 | |
690 | /* merge areas and interfaces */ |
691 | for (a = LIST_FIRST(&conf->area_list)((&conf->area_list)->lh_first); a != NULL((void*)0); a = na) { |
692 | na = LIST_NEXT(a, entry)((a)->entry.le_next); |
693 | /* find deleted areas */ |
694 | if ((xa = area_find(xconf, a->id)) == NULL((void*)0)) { |
695 | if (ospfd_process == PROC_OSPF_ENGINE) { |
696 | LIST_FOREACH(iface, &a->iface_list, entry)for((iface) = ((&a->iface_list)->lh_first); (iface) != ((void*)0); (iface) = ((iface)->entry.le_next)) |
697 | if_fsm(iface, IF_EVT_DOWN); |
698 | } |
699 | LIST_REMOVE(a, entry)do { if ((a)->entry.le_next != ((void*)0)) (a)->entry.le_next ->entry.le_prev = (a)->entry.le_prev; *(a)->entry.le_prev = (a)->entry.le_next; ; ; } while (0); |
700 | area_del(a); |
701 | } |
702 | } |
703 | |
704 | for (xa = LIST_FIRST(&xconf->area_list)((&xconf->area_list)->lh_first); xa != NULL((void*)0); xa = na) { |
705 | na = LIST_NEXT(xa, entry)((xa)->entry.le_next); |
706 | if ((a = area_find(conf, xa->id)) == NULL((void*)0)) { |
707 | LIST_REMOVE(xa, entry)do { if ((xa)->entry.le_next != ((void*)0)) (xa)->entry .le_next->entry.le_prev = (xa)->entry.le_prev; *(xa)-> entry.le_prev = (xa)->entry.le_next; ; ; } while (0); |
708 | LIST_INSERT_HEAD(&conf->area_list, xa, entry)do { if (((xa)->entry.le_next = (&conf->area_list)-> lh_first) != ((void*)0)) (&conf->area_list)->lh_first ->entry.le_prev = &(xa)->entry.le_next; (&conf-> area_list)->lh_first = (xa); (xa)->entry.le_prev = & (&conf->area_list)->lh_first; } while (0); |
709 | if (ospfd_process == PROC_OSPF_ENGINE) { |
710 | /* start interfaces */ |
711 | ospfe_demote_area(xa, 0); |
712 | LIST_FOREACH(iface, &xa->iface_list, entry)for((iface) = ((&xa->iface_list)->lh_first); (iface )!= ((void*)0); (iface) = ((iface)->entry.le_next)) |
713 | if_start(conf, iface); |
714 | } |
715 | /* no need to merge interfaces */ |
716 | continue; |
717 | } |
718 | /* |
719 | * stub is not yet used but switching between stub and normal |
720 | * will be another painful job. |
721 | */ |
722 | a->stub = xa->stub; |
723 | a->stub_default_cost = xa->stub_default_cost; |
724 | if (ospfd_process == PROC_RDE_ENGINE) |
725 | a->dirty = 1; /* force SPF tree recalculation */ |
726 | |
727 | /* merge interfaces */ |
728 | if (merge_interfaces(a, xa) && |
729 | ospfd_process == PROC_OSPF_ENGINE) |
730 | a->dirty = 1; /* force rtr LSA update */ |
731 | } |
732 | |
733 | if (ospfd_process == PROC_OSPF_ENGINE) { |
734 | LIST_FOREACH(a, &conf->area_list, entry)for((a) = ((&conf->area_list)->lh_first); (a)!= ((void *)0); (a) = ((a)->entry.le_next)) { |
735 | LIST_FOREACH(iface, &a->iface_list, entry)for((iface) = ((&a->iface_list)->lh_first); (iface) != ((void*)0); (iface) = ((iface)->entry.le_next)) { |
736 | if (iface->state == IF_STA_NEW0x00) { |
737 | iface->state = IF_STA_DOWN0x01; |
738 | if_start(conf, iface); |
739 | } |
740 | } |
741 | if (a->dirty) { |
742 | a->dirty = 0; |
743 | orig_rtr_lsa(LIST_FIRST(&a->iface_list)((&a->iface_list)->lh_first)->area); |
744 | } |
745 | } |
746 | } |
747 | |
748 | done: |
749 | while ((a = LIST_FIRST(&xconf->area_list)((&xconf->area_list)->lh_first)) != NULL((void*)0)) { |
750 | LIST_REMOVE(a, entry)do { if ((a)->entry.le_next != ((void*)0)) (a)->entry.le_next ->entry.le_prev = (a)->entry.le_prev; *(a)->entry.le_prev = (a)->entry.le_next; ; ; } while (0); |
751 | area_del(a); |
752 | } |
753 | free(xconf); |
754 | } |
755 | |
756 | int |
757 | merge_interfaces(struct area *a, struct area *xa) |
758 | { |
759 | struct iface *i, *xi, *ni; |
760 | int dirty = 0; |
761 | |
762 | /* problems: |
763 | * - new interfaces (easy) |
764 | * - deleted interfaces (needs to be done via fsm?) |
765 | * - changing passive (painful?) |
766 | */ |
767 | for (i = LIST_FIRST(&a->iface_list)((&a->iface_list)->lh_first); i != NULL((void*)0); i = ni) { |
768 | ni = LIST_NEXT(i, entry)((i)->entry.le_next); |
769 | if (iface_lookup(xa, i) == NULL((void*)0)) { |
770 | log_debug("merge_interfaces: proc %d area %s removing " |
771 | "interface %s", ospfd_process, inet_ntoa(a->id), |
772 | i->name); |
773 | if (ospfd_process == PROC_OSPF_ENGINE) |
774 | if_fsm(i, IF_EVT_DOWN); |
775 | LIST_REMOVE(i, entry)do { if ((i)->entry.le_next != ((void*)0)) (i)->entry.le_next ->entry.le_prev = (i)->entry.le_prev; *(i)->entry.le_prev = (i)->entry.le_next; ; ; } while (0); |
776 | if_del(i); |
777 | } |
778 | } |
779 | |
780 | for (xi = LIST_FIRST(&xa->iface_list)((&xa->iface_list)->lh_first); xi != NULL((void*)0); xi = ni) { |
781 | ni = LIST_NEXT(xi, entry)((xi)->entry.le_next); |
782 | if ((i = iface_lookup(a, xi)) == NULL((void*)0)) { |
783 | /* new interface but delay initialisation */ |
784 | log_debug("merge_interfaces: proc %d area %s adding " |
785 | "interface %s", ospfd_process, inet_ntoa(a->id), |
786 | xi->name); |
787 | LIST_REMOVE(xi, entry)do { if ((xi)->entry.le_next != ((void*)0)) (xi)->entry .le_next->entry.le_prev = (xi)->entry.le_prev; *(xi)-> entry.le_prev = (xi)->entry.le_next; ; ; } while (0); |
788 | LIST_INSERT_HEAD(&a->iface_list, xi, entry)do { if (((xi)->entry.le_next = (&a->iface_list)-> lh_first) != ((void*)0)) (&a->iface_list)->lh_first ->entry.le_prev = &(xi)->entry.le_next; (&a-> iface_list)->lh_first = (xi); (xi)->entry.le_prev = & (&a->iface_list)->lh_first; } while (0); |
789 | if (ospfd_process == PROC_OSPF_ENGINE) |
790 | xi->state = IF_STA_NEW0x00; |
791 | continue; |
792 | } |
793 | log_debug("merge_interfaces: proc %d area %s merging " |
794 | "interface %s", ospfd_process, inet_ntoa(a->id), i->name); |
795 | i->addr = xi->addr; |
796 | i->dst = xi->dst; |
797 | i->abr_id = xi->abr_id; |
798 | i->baudrate = xi->baudrate; |
799 | i->dead_interval = xi->dead_interval; |
800 | i->mtu = xi->mtu; |
801 | i->transmit_delay = xi->transmit_delay; |
802 | i->hello_interval = xi->hello_interval; |
803 | i->rxmt_interval = xi->rxmt_interval; |
804 | if (i->metric != xi->metric) |
805 | dirty = 1; |
806 | i->metric = xi->metric; |
807 | i->priority = xi->priority; |
808 | if (i->self) |
809 | i->self->priority = i->priority; |
810 | i->flags = xi->flags; /* needed? */ |
811 | i->type = xi->type; /* needed? */ |
812 | i->if_type = xi->if_type; /* needed? */ |
813 | i->linkstate = xi->linkstate; /* needed? */ |
814 | |
815 | #if 0 /* XXX needs some kind of love */ |
816 | if (i->passive != xi->passive) { |
817 | /* need to restart interface to cope with this change */ |
818 | if (ospfd_process == PROC_OSPF_ENGINE) |
819 | if_fsm(i, IF_EVT_DOWN); |
820 | i->passive = xi->passive; |
821 | if (ospfd_process == PROC_OSPF_ENGINE) |
822 | if_fsm(i, IF_EVT_UP); |
823 | } |
824 | #endif |
825 | } |
826 | return (dirty); |
827 | } |
828 | |
829 | struct iface * |
830 | iface_lookup(struct area *area, struct iface *iface) |
831 | { |
832 | struct iface *i; |
833 | |
834 | LIST_FOREACH(i, &area->iface_list, entry)for((i) = ((&area->iface_list)->lh_first); (i)!= (( void*)0); (i) = ((i)->entry.le_next)) |
835 | if (i->ifindex == iface->ifindex) |
836 | return (i); |
837 | return (NULL((void*)0)); |
838 | } |
839 | |
840 | int |
841 | ifstate_is_up(struct iface *iface) |
842 | { |
843 | if (!(iface->flags & IFF_UP0x1)) |
844 | return (0); |
845 | if (iface->if_type == IFT_CARP0xf7 && |
846 | iface->linkstate == LINK_STATE_UNKNOWN0) |
847 | return (0); |
848 | return LINK_STATE_IS_UP(iface->linkstate)((iface->linkstate) >= 4 || (iface->linkstate) == 0); |
849 | } |