File: | src/usr.sbin/ldpd/ldpd.c |
Warning: | line 1096, column 8 Although the value stored to 'xf' is used in the enclosing expression, the value is never actually read from 'xf' |
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1 | /* $OpenBSD: ldpd.c,v 1.68 2021/09/06 13:32:18 deraadt Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org> |
5 | * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org> |
6 | * Copyright (c) 2004, 2008 Esben Norby <norby@openbsd.org> |
7 | * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> |
8 | * |
9 | * Permission to use, copy, modify, and distribute this software for any |
10 | * purpose with or without fee is hereby granted, provided that the above |
11 | * copyright notice and this permission notice appear in all copies. |
12 | * |
13 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
14 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
15 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
16 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
17 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
18 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
19 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | */ |
21 | |
22 | #include <sys/types.h> |
23 | #include <sys/wait.h> |
24 | #include <err.h> |
25 | #include <errno(*__errno()).h> |
26 | #include <fcntl.h> |
27 | #include <pwd.h> |
28 | #include <stdio.h> |
29 | #include <stdlib.h> |
30 | #include <string.h> |
31 | #include <signal.h> |
32 | #include <unistd.h> |
33 | |
34 | #include "ldpd.h" |
35 | #include "ldpe.h" |
36 | #include "lde.h" |
37 | #include "log.h" |
38 | |
39 | static void main_sig_handler(int, short, void *); |
40 | static __dead__attribute__((__noreturn__)) void usage(void); |
41 | static __dead__attribute__((__noreturn__)) void ldpd_shutdown(void); |
42 | static pid_t start_child(enum ldpd_process, char *, int, int, int, |
43 | char *); |
44 | static void main_dispatch_ldpe(int, short, void *); |
45 | static void main_dispatch_lde(int, short, void *); |
46 | static int main_imsg_compose_both(enum imsg_type, void *, |
47 | uint16_t); |
48 | static int main_imsg_send_ipc_sockets(struct imsgbuf *, |
49 | struct imsgbuf *); |
50 | static void main_imsg_send_net_sockets(int); |
51 | static void main_imsg_send_net_socket(int, enum socket_type); |
52 | static int main_imsg_send_config(struct ldpd_conf *); |
53 | static int ldp_reload(void); |
54 | static void merge_global(struct ldpd_conf *, struct ldpd_conf *); |
55 | static void merge_af(int, struct ldpd_af_conf *, |
56 | struct ldpd_af_conf *); |
57 | static void merge_ifaces(struct ldpd_conf *, struct ldpd_conf *); |
58 | static void merge_iface_af(struct iface_af *, struct iface_af *); |
59 | static void merge_tnbrs(struct ldpd_conf *, struct ldpd_conf *); |
60 | static void merge_nbrps(struct ldpd_conf *, struct ldpd_conf *); |
61 | static void merge_l2vpns(struct ldpd_conf *, struct ldpd_conf *); |
62 | static void merge_l2vpn(struct ldpd_conf *, struct l2vpn *, |
63 | struct l2vpn *); |
64 | static void merge_auths(struct ldpd_conf *, struct ldpd_conf *); |
65 | |
66 | enum ldpd_process ldpd_process; |
67 | struct ldpd_global global; |
68 | struct ldpd_conf *ldpd_conf; |
69 | |
70 | static char *conffile; |
71 | static struct imsgev *iev_ldpe; |
72 | static struct imsgev *iev_lde; |
73 | static pid_t ldpe_pid; |
74 | static pid_t lde_pid; |
75 | |
76 | /* ARGSUSED */ |
77 | static 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 | ldpd_shutdown(); |
85 | /* NOTREACHED */ |
86 | case SIGHUP1: |
87 | if (ldp_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 | static __dead__attribute__((__noreturn__)) void |
99 | usage(void) |
100 | { |
101 | extern char *__progname; |
102 | |
103 | fprintf(stderr(&__sF[2]), "usage: %s [-dnv] [-D macro=value] [-f file]" |
104 | " [-s socket]\n", __progname); |
105 | exit(1); |
106 | } |
107 | |
108 | int |
109 | main(int argc, char *argv[]) |
110 | { |
111 | struct event ev_sigint, ev_sigterm, ev_sighup; |
112 | char *saved_argv0; |
113 | int ch; |
114 | int debug = 0, lflag = 0, eflag = 0; |
115 | char *sockname; |
116 | int pipe_parent2ldpe[2]; |
117 | int pipe_parent2lde[2]; |
118 | |
119 | conffile = CONF_FILE"/etc/ldpd.conf"; |
120 | ldpd_process = PROC_MAIN; |
121 | log_procname = "parent"; |
122 | sockname = LDPD_SOCKET"/var/run/ldpd.sock"; |
123 | |
124 | log_init(1); /* log to stderr until daemonized */ |
125 | log_verbose(1); |
126 | |
127 | saved_argv0 = argv[0]; |
128 | if (saved_argv0 == NULL((void *)0)) |
129 | saved_argv0 = "ldpd"; |
130 | |
131 | while ((ch = getopt(argc, argv, "dD:f:ns:vLE")) != -1) { |
132 | switch (ch) { |
133 | case 'd': |
134 | debug = 1; |
135 | break; |
136 | case 'D': |
137 | if (cmdline_symset(optarg) < 0) |
138 | log_warnx("could not parse macro definition %s", |
139 | optarg); |
140 | break; |
141 | case 'f': |
142 | conffile = optarg; |
143 | break; |
144 | case 'n': |
145 | global.cmd_opts |= LDPD_OPT_NOACTION0x00000004; |
146 | break; |
147 | case 's': |
148 | sockname = optarg; |
149 | break; |
150 | case 'v': |
151 | if (global.cmd_opts & LDPD_OPT_VERBOSE0x00000001) |
152 | global.cmd_opts |= LDPD_OPT_VERBOSE20x00000002; |
153 | global.cmd_opts |= LDPD_OPT_VERBOSE0x00000001; |
154 | break; |
155 | case 'L': |
156 | lflag = 1; |
157 | break; |
158 | case 'E': |
159 | eflag = 1; |
160 | break; |
161 | default: |
162 | usage(); |
163 | /* NOTREACHED */ |
164 | } |
165 | } |
166 | |
167 | argc -= optind; |
168 | argv += optind; |
169 | if (argc > 0 || (lflag && eflag)) |
170 | usage(); |
171 | |
172 | if (lflag) |
173 | lde(debug, global.cmd_opts & LDPD_OPT_VERBOSE0x00000001); |
174 | else if (eflag) |
175 | ldpe(debug, global.cmd_opts & LDPD_OPT_VERBOSE0x00000001, sockname); |
176 | |
177 | /* fetch interfaces early */ |
178 | kif_init(); |
179 | |
180 | /* parse config file */ |
181 | if ((ldpd_conf = parse_config(conffile)) == NULL((void *)0) ) { |
182 | kif_clear(); |
183 | exit(1); |
184 | } |
185 | |
186 | if (global.cmd_opts & LDPD_OPT_NOACTION0x00000004) { |
187 | if (global.cmd_opts & LDPD_OPT_VERBOSE0x00000001) |
188 | print_config(ldpd_conf); |
189 | else |
190 | fprintf(stderr(&__sF[2]), "configuration OK\n"); |
191 | kif_clear(); |
192 | exit(0); |
193 | } |
194 | |
195 | /* check for root privileges */ |
196 | if (geteuid()) |
197 | errx(1, "need root privileges"); |
198 | |
199 | /* check for ldpd user */ |
200 | if (getpwnam(LDPD_USER"_ldpd") == NULL((void *)0)) |
201 | errx(1, "unknown user %s", LDPD_USER"_ldpd"); |
202 | |
203 | log_init(debug); |
204 | log_verbose(global.cmd_opts & (LDPD_OPT_VERBOSE0x00000001 | LDPD_OPT_VERBOSE20x00000002)); |
205 | |
206 | if (!debug) |
207 | daemon(1, 0); |
208 | |
209 | log_info("startup"); |
210 | |
211 | if (socketpair(AF_UNIX1, SOCK_STREAM1 | SOCK_NONBLOCK0x4000 | SOCK_CLOEXEC0x8000, |
212 | PF_UNSPEC0, pipe_parent2ldpe) == -1) |
213 | fatal("socketpair"); |
214 | if (socketpair(AF_UNIX1, SOCK_STREAM1 | SOCK_NONBLOCK0x4000 | SOCK_CLOEXEC0x8000, |
215 | PF_UNSPEC0, pipe_parent2lde) == -1) |
216 | fatal("socketpair"); |
217 | |
218 | /* start children */ |
219 | lde_pid = start_child(PROC_LDE_ENGINE, saved_argv0, |
220 | pipe_parent2lde[1], debug, global.cmd_opts & LDPD_OPT_VERBOSE0x00000001, |
221 | NULL((void *)0)); |
222 | ldpe_pid = start_child(PROC_LDP_ENGINE, saved_argv0, |
223 | pipe_parent2ldpe[1], debug, global.cmd_opts & LDPD_OPT_VERBOSE0x00000001, |
224 | sockname); |
225 | |
226 | if (unveil("/", "r") == -1) |
227 | fatal("unveil /"); |
228 | if (unveil(NULL((void *)0), NULL((void *)0)) == -1) |
229 | fatal("unveil"); |
230 | |
231 | event_init(); |
232 | |
233 | /* setup signal handler */ |
234 | signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL)event_set(&ev_sigint, 2, 0x08|0x10, main_sig_handler, ((void *)0)); |
235 | signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL)event_set(&ev_sigterm, 15, 0x08|0x10, main_sig_handler, ( (void *)0)); |
236 | signal_set(&ev_sighup, SIGHUP, main_sig_handler, NULL)event_set(&ev_sighup, 1, 0x08|0x10, main_sig_handler, ((void *)0)); |
237 | signal_add(&ev_sigint, NULL)event_add(&ev_sigint, ((void *)0)); |
238 | signal_add(&ev_sigterm, NULL)event_add(&ev_sigterm, ((void *)0)); |
239 | signal_add(&ev_sighup, NULL)event_add(&ev_sighup, ((void *)0)); |
240 | signal(SIGPIPE13, SIG_IGN(void (*)(int))1); |
241 | |
242 | /* setup pipes to children */ |
243 | if ((iev_ldpe = malloc(sizeof(struct imsgev))) == NULL((void *)0) || |
244 | (iev_lde = malloc(sizeof(struct imsgev))) == NULL((void *)0)) |
245 | fatal(NULL((void *)0)); |
246 | imsg_init(&iev_ldpe->ibuf, pipe_parent2ldpe[0]); |
247 | iev_ldpe->handler = main_dispatch_ldpe; |
248 | imsg_init(&iev_lde->ibuf, pipe_parent2lde[0]); |
249 | iev_lde->handler = main_dispatch_lde; |
250 | |
251 | /* setup event handler */ |
252 | iev_ldpe->events = EV_READ0x02; |
253 | event_set(&iev_ldpe->ev, iev_ldpe->ibuf.fd, iev_ldpe->events, |
254 | iev_ldpe->handler, iev_ldpe); |
255 | event_add(&iev_ldpe->ev, NULL((void *)0)); |
256 | |
257 | iev_lde->events = EV_READ0x02; |
258 | event_set(&iev_lde->ev, iev_lde->ibuf.fd, iev_lde->events, |
259 | iev_lde->handler, iev_lde); |
260 | event_add(&iev_lde->ev, NULL((void *)0)); |
261 | |
262 | if (main_imsg_send_ipc_sockets(&iev_ldpe->ibuf, &iev_lde->ibuf)) |
263 | fatal("could not establish imsg links"); |
264 | main_imsg_send_config(ldpd_conf); |
265 | |
266 | if (kr_init(!(ldpd_conf->flags & F_LDPD_NO_FIB_UPDATE0x0001), |
267 | ldpd_conf->rdomain) == -1) |
268 | fatalx("kr_init failed"); |
269 | |
270 | /* notify ldpe about existing interfaces and addresses */ |
271 | kif_redistribute(NULL((void *)0)); |
272 | |
273 | if (ldpd_conf->ipv4.flags & F_LDPD_AF_ENABLED0x0001) |
274 | main_imsg_send_net_sockets(AF_INET2); |
275 | if (ldpd_conf->ipv6.flags & F_LDPD_AF_ENABLED0x0001) |
276 | main_imsg_send_net_sockets(AF_INET624); |
277 | |
278 | /* remove unneeded stuff from config */ |
279 | /* ... */ |
280 | |
281 | event_dispatch(); |
282 | |
283 | ldpd_shutdown(); |
284 | /* NOTREACHED */ |
285 | return (0); |
286 | } |
287 | |
288 | static __dead__attribute__((__noreturn__)) void |
289 | ldpd_shutdown(void) |
290 | { |
291 | pid_t pid; |
292 | int status; |
293 | |
294 | /* close pipes */ |
295 | msgbuf_clear(&iev_ldpe->ibuf.w); |
296 | close(iev_ldpe->ibuf.fd); |
297 | msgbuf_clear(&iev_lde->ibuf.w); |
298 | close(iev_lde->ibuf.fd); |
299 | |
300 | kr_shutdown(); |
301 | config_clear(ldpd_conf); |
302 | |
303 | log_debug("waiting for children to terminate"); |
304 | do { |
305 | pid = wait(&status); |
306 | if (pid == -1) { |
307 | if (errno(*__errno()) != EINTR4 && errno(*__errno()) != ECHILD10) |
308 | fatal("wait"); |
309 | } else if (WIFSIGNALED(status)(((status) & 0177) != 0177 && ((status) & 0177 ) != 0)) |
310 | log_warnx("%s terminated; signal %d", |
311 | (pid == lde_pid) ? "label decision engine" : |
312 | "ldp engine", WTERMSIG(status)(((status) & 0177))); |
313 | } while (pid != -1 || (pid == -1 && errno(*__errno()) == EINTR4)); |
314 | |
315 | free(iev_ldpe); |
316 | free(iev_lde); |
317 | |
318 | log_info("terminating"); |
319 | exit(0); |
320 | } |
321 | |
322 | static pid_t |
323 | start_child(enum ldpd_process p, char *argv0, int fd, int debug, int verbose, |
324 | char *sockname) |
325 | { |
326 | char *argv[7]; |
327 | int argc = 0; |
328 | pid_t pid; |
329 | |
330 | switch (pid = fork()) { |
331 | case -1: |
332 | fatal("cannot fork"); |
333 | case 0: |
334 | break; |
335 | default: |
336 | close(fd); |
337 | return (pid); |
338 | } |
339 | |
340 | if (fd != 3) { |
341 | if (dup2(fd, 3) == -1) |
342 | fatal("cannot setup imsg fd"); |
343 | } else if (fcntl(fd, F_SETFD2, 0) == -1) |
344 | fatal("cannot setup imsg fd"); |
345 | |
346 | argv[argc++] = argv0; |
347 | switch (p) { |
348 | case PROC_MAIN: |
349 | fatalx("Can not start main process"); |
350 | case PROC_LDE_ENGINE: |
351 | argv[argc++] = "-L"; |
352 | break; |
353 | case PROC_LDP_ENGINE: |
354 | argv[argc++] = "-E"; |
355 | break; |
356 | } |
357 | if (debug) |
358 | argv[argc++] = "-d"; |
359 | if (verbose) |
360 | argv[argc++] = "-v"; |
361 | if (sockname) { |
362 | argv[argc++] = "-s"; |
363 | argv[argc++] = sockname; |
364 | } |
365 | argv[argc++] = NULL((void *)0); |
366 | |
367 | execvp(argv0, argv); |
368 | fatal("execvp"); |
369 | } |
370 | |
371 | /* imsg handling */ |
372 | /* ARGSUSED */ |
373 | static void |
374 | main_dispatch_ldpe(int fd, short event, void *bula) |
375 | { |
376 | struct imsgev *iev = bula; |
377 | struct imsgbuf *ibuf = &iev->ibuf; |
378 | struct imsg imsg; |
379 | int af; |
380 | ssize_t n; |
381 | int shut = 0, verbose; |
382 | |
383 | if (event & EV_READ0x02) { |
384 | if ((n = imsg_read(ibuf)) == -1 && errno(*__errno()) != EAGAIN35) |
385 | fatal("imsg_read error"); |
386 | if (n == 0) /* connection closed */ |
387 | shut = 1; |
388 | } |
389 | if (event & EV_WRITE0x04) { |
390 | if ((n = msgbuf_write(&ibuf->w)) == -1 && errno(*__errno()) != EAGAIN35) |
391 | fatal("msgbuf_write"); |
392 | if (n == 0) |
393 | shut = 1; |
394 | } |
395 | |
396 | for (;;) { |
397 | if ((n = imsg_get(ibuf, &imsg)) == -1) |
398 | fatal("imsg_get"); |
399 | |
400 | if (n == 0) |
401 | break; |
402 | |
403 | switch (imsg.hdr.type) { |
404 | case IMSG_REQUEST_SOCKETS: |
405 | af = imsg.hdr.pid; |
406 | main_imsg_send_net_sockets(af); |
407 | break; |
408 | case IMSG_CTL_RELOAD: |
409 | if (ldp_reload() == -1) |
410 | log_warnx("configuration reload failed"); |
411 | else |
412 | log_debug("configuration reloaded"); |
413 | break; |
414 | case IMSG_CTL_FIB_COUPLE: |
415 | kr_fib_couple(); |
416 | break; |
417 | case IMSG_CTL_FIB_DECOUPLE: |
418 | kr_fib_decouple(); |
419 | break; |
420 | case IMSG_CTL_KROUTE: |
421 | case IMSG_CTL_KROUTE_ADDR: |
422 | kr_show_route(&imsg); |
423 | break; |
424 | case IMSG_CTL_IFINFO: |
425 | if (imsg.hdr.len == IMSG_HEADER_SIZEsizeof(struct imsg_hdr)) |
426 | kr_ifinfo(NULL((void *)0), imsg.hdr.pid); |
427 | else if (imsg.hdr.len == IMSG_HEADER_SIZEsizeof(struct imsg_hdr) + IFNAMSIZ16) |
428 | kr_ifinfo(imsg.data, imsg.hdr.pid); |
429 | else |
430 | log_warnx("IFINFO request with wrong len"); |
431 | break; |
432 | case IMSG_CTL_LOG_VERBOSE: |
433 | /* already checked by ldpe */ |
434 | memcpy(&verbose, imsg.data, sizeof(verbose)); |
435 | log_verbose(verbose); |
436 | break; |
437 | default: |
438 | log_debug("%s: error handling imsg %d", __func__, |
439 | imsg.hdr.type); |
440 | break; |
441 | } |
442 | imsg_free(&imsg); |
443 | } |
444 | if (!shut) |
445 | imsg_event_add(iev); |
446 | else { |
447 | /* this pipe is dead, so remove the event handler */ |
448 | event_del(&iev->ev); |
449 | event_loopexit(NULL((void *)0)); |
450 | } |
451 | } |
452 | |
453 | /* ARGSUSED */ |
454 | static void |
455 | main_dispatch_lde(int fd, short event, void *bula) |
456 | { |
457 | struct imsgev *iev = bula; |
458 | struct imsgbuf *ibuf = &iev->ibuf; |
459 | struct imsg imsg; |
460 | ssize_t n; |
461 | int shut = 0; |
462 | |
463 | if (event & EV_READ0x02) { |
464 | if ((n = imsg_read(ibuf)) == -1 && errno(*__errno()) != EAGAIN35) |
465 | fatal("imsg_read error"); |
466 | if (n == 0) /* connection closed */ |
467 | shut = 1; |
468 | } |
469 | if (event & EV_WRITE0x04) { |
470 | if ((n = msgbuf_write(&ibuf->w)) == -1 && errno(*__errno()) != EAGAIN35) |
471 | fatal("msgbuf_write"); |
472 | if (n == 0) |
473 | shut = 1; |
474 | } |
475 | |
476 | for (;;) { |
477 | if ((n = imsg_get(ibuf, &imsg)) == -1) |
478 | fatal("imsg_get"); |
479 | |
480 | if (n == 0) |
481 | break; |
482 | |
483 | switch (imsg.hdr.type) { |
484 | case IMSG_KLABEL_CHANGE: |
485 | if (imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr) != |
486 | sizeof(struct kroute)) |
487 | fatalx("invalid size of IMSG_KLABEL_CHANGE"); |
488 | if (kr_change(imsg.data)) |
489 | log_warnx("%s: error changing route", __func__); |
490 | break; |
491 | case IMSG_KLABEL_DELETE: |
492 | if (imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr) != |
493 | sizeof(struct kroute)) |
494 | fatalx("invalid size of IMSG_KLABEL_DELETE"); |
495 | if (kr_delete(imsg.data)) |
496 | log_warnx("%s: error deleting route", __func__); |
497 | break; |
498 | case IMSG_KPWLABEL_CHANGE: |
499 | if (imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr) != |
500 | sizeof(struct kpw)) |
501 | fatalx("invalid size of IMSG_KPWLABEL_CHANGE"); |
502 | if (kmpw_set(imsg.data)) |
503 | log_warnx("%s: error changing pseudowire", |
504 | __func__); |
505 | break; |
506 | case IMSG_KPWLABEL_DELETE: |
507 | if (imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr) != |
508 | sizeof(struct kpw)) |
509 | fatalx("invalid size of IMSG_KPWLABEL_DELETE"); |
510 | if (kmpw_unset(imsg.data)) |
511 | log_warnx("%s: error unsetting pseudowire", |
512 | __func__); |
513 | break; |
514 | default: |
515 | log_debug("%s: error handling imsg %d", __func__, |
516 | imsg.hdr.type); |
517 | break; |
518 | } |
519 | imsg_free(&imsg); |
520 | } |
521 | if (!shut) |
522 | imsg_event_add(iev); |
523 | else { |
524 | /* this pipe is dead, so remove the event handler */ |
525 | event_del(&iev->ev); |
526 | event_loopexit(NULL((void *)0)); |
527 | } |
528 | } |
529 | |
530 | void |
531 | main_imsg_compose_ldpe(int type, pid_t pid, void *data, uint16_t datalen) |
532 | { |
533 | if (iev_ldpe == NULL((void *)0)) |
534 | return; |
535 | imsg_compose_event(iev_ldpe, type, 0, pid, -1, data, datalen); |
536 | } |
537 | |
538 | void |
539 | main_imsg_compose_lde(int type, pid_t pid, void *data, uint16_t datalen) |
540 | { |
541 | imsg_compose_event(iev_lde, type, 0, pid, -1, data, datalen); |
542 | } |
543 | |
544 | static int |
545 | main_imsg_compose_both(enum imsg_type type, void *buf, uint16_t len) |
546 | { |
547 | if (imsg_compose_event(iev_ldpe, type, 0, 0, -1, buf, len) == -1) |
548 | return (-1); |
549 | if (imsg_compose_event(iev_lde, type, 0, 0, -1, buf, len) == -1) |
550 | return (-1); |
551 | return (0); |
552 | } |
553 | |
554 | void |
555 | imsg_event_add(struct imsgev *iev) |
556 | { |
557 | iev->events = EV_READ0x02; |
558 | if (iev->ibuf.w.queued) |
559 | iev->events |= EV_WRITE0x04; |
560 | |
561 | event_del(&iev->ev); |
562 | event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev); |
563 | event_add(&iev->ev, NULL((void *)0)); |
564 | } |
565 | |
566 | int |
567 | imsg_compose_event(struct imsgev *iev, uint16_t type, uint32_t peerid, |
568 | pid_t pid, int fd, void *data, uint16_t datalen) |
569 | { |
570 | int ret; |
571 | |
572 | if ((ret = imsg_compose(&iev->ibuf, type, peerid, |
573 | pid, fd, data, datalen)) != -1) |
574 | imsg_event_add(iev); |
575 | return (ret); |
576 | } |
577 | |
578 | void |
579 | evbuf_enqueue(struct evbuf *eb, struct ibuf *buf) |
580 | { |
581 | ibuf_close(&eb->wbuf, buf); |
582 | evbuf_event_add(eb); |
583 | } |
584 | |
585 | void |
586 | evbuf_event_add(struct evbuf *eb) |
587 | { |
588 | if (eb->wbuf.queued) |
589 | event_add(&eb->ev, NULL((void *)0)); |
590 | } |
591 | |
592 | void |
593 | evbuf_init(struct evbuf *eb, int fd, void (*handler)(int, short, void *), |
594 | void *arg) |
595 | { |
596 | msgbuf_init(&eb->wbuf); |
597 | eb->wbuf.fd = fd; |
598 | event_set(&eb->ev, eb->wbuf.fd, EV_WRITE0x04, handler, arg); |
599 | } |
600 | |
601 | void |
602 | evbuf_clear(struct evbuf *eb) |
603 | { |
604 | event_del(&eb->ev); |
605 | msgbuf_clear(&eb->wbuf); |
606 | eb->wbuf.fd = -1; |
607 | } |
608 | |
609 | static int |
610 | main_imsg_send_ipc_sockets(struct imsgbuf *ldpe_buf, struct imsgbuf *lde_buf) |
611 | { |
612 | int pipe_ldpe2lde[2]; |
613 | |
614 | if (socketpair(AF_UNIX1, SOCK_STREAM1 | SOCK_CLOEXEC0x8000 | SOCK_NONBLOCK0x4000, |
615 | PF_UNSPEC0, pipe_ldpe2lde) == -1) |
616 | return (-1); |
617 | |
618 | if (imsg_compose(ldpe_buf, IMSG_SOCKET_IPC, 0, 0, pipe_ldpe2lde[0], |
619 | NULL((void *)0), 0) == -1) |
620 | return (-1); |
621 | if (imsg_compose(lde_buf, IMSG_SOCKET_IPC, 0, 0, pipe_ldpe2lde[1], |
622 | NULL((void *)0), 0) == -1) |
623 | return (-1); |
624 | |
625 | return (0); |
626 | } |
627 | |
628 | static void |
629 | main_imsg_send_net_sockets(int af) |
630 | { |
631 | main_imsg_send_net_socket(af, LDP_SOCKET_DISC); |
632 | main_imsg_send_net_socket(af, LDP_SOCKET_EDISC); |
633 | main_imsg_send_net_socket(af, LDP_SOCKET_SESSION); |
634 | imsg_compose_event(iev_ldpe, IMSG_SETUP_SOCKETS, af, 0, -1, NULL((void *)0), 0); |
635 | } |
636 | |
637 | static void |
638 | main_imsg_send_net_socket(int af, enum socket_type type) |
639 | { |
640 | int fd; |
641 | |
642 | fd = ldp_create_socket(af, type); |
643 | if (fd == -1) { |
644 | log_warnx("%s: failed to create %s socket for address-family " |
645 | "%s", __func__, socket_name(type), af_name(af)); |
646 | return; |
647 | } |
648 | |
649 | imsg_compose_event(iev_ldpe, IMSG_SOCKET_NET, af, 0, fd, &type, |
650 | sizeof(type)); |
651 | } |
652 | |
653 | struct ldpd_af_conf * |
654 | ldp_af_conf_get(struct ldpd_conf *xconf, int af) |
655 | { |
656 | switch (af) { |
657 | case AF_INET2: |
658 | return (&xconf->ipv4); |
659 | case AF_INET624: |
660 | return (&xconf->ipv6); |
661 | default: |
662 | fatalx("ldp_af_conf_get: unknown af"); |
663 | } |
664 | } |
665 | |
666 | struct ldpd_af_global * |
667 | ldp_af_global_get(struct ldpd_global *xglobal, int af) |
668 | { |
669 | switch (af) { |
670 | case AF_INET2: |
671 | return (&xglobal->ipv4); |
672 | case AF_INET624: |
673 | return (&xglobal->ipv6); |
674 | default: |
675 | fatalx("ldp_af_global_get: unknown af"); |
676 | } |
677 | } |
678 | |
679 | int |
680 | ldp_is_dual_stack(struct ldpd_conf *xconf) |
681 | { |
682 | return ((xconf->ipv4.flags & F_LDPD_AF_ENABLED0x0001) && |
683 | (xconf->ipv6.flags & F_LDPD_AF_ENABLED0x0001)); |
684 | } |
685 | |
686 | static int |
687 | main_imsg_send_config(struct ldpd_conf *xconf) |
688 | { |
689 | struct iface *iface; |
690 | struct tnbr *tnbr; |
691 | struct nbr_params *nbrp; |
692 | struct l2vpn *l2vpn; |
693 | struct l2vpn_if *lif; |
694 | struct l2vpn_pw *pw; |
695 | struct ldp_auth *auth; |
696 | |
697 | if (main_imsg_compose_both(IMSG_RECONF_CONF, xconf, |
698 | sizeof(*xconf)) == -1) |
699 | return (-1); |
700 | |
701 | LIST_FOREACH(auth, &xconf->auth_list, entry)for((auth) = ((&xconf->auth_list)->lh_first); (auth )!= ((void *)0); (auth) = ((auth)->entry.le_next)) { |
702 | if (main_imsg_compose_both(IMSG_RECONF_CONF_AUTH, |
703 | auth, sizeof(*auth)) == -1) |
704 | return (-1); |
705 | } |
706 | |
707 | LIST_FOREACH(iface, &xconf->iface_list, entry)for((iface) = ((&xconf->iface_list)->lh_first); (iface )!= ((void *)0); (iface) = ((iface)->entry.le_next)) { |
708 | if (main_imsg_compose_both(IMSG_RECONF_IFACE, iface, |
709 | sizeof(*iface)) == -1) |
710 | return (-1); |
711 | } |
712 | |
713 | LIST_FOREACH(tnbr, &xconf->tnbr_list, entry)for((tnbr) = ((&xconf->tnbr_list)->lh_first); (tnbr )!= ((void *)0); (tnbr) = ((tnbr)->entry.le_next)) { |
714 | if (main_imsg_compose_both(IMSG_RECONF_TNBR, tnbr, |
715 | sizeof(*tnbr)) == -1) |
716 | return (-1); |
717 | } |
718 | |
719 | LIST_FOREACH(nbrp, &xconf->nbrp_list, entry)for((nbrp) = ((&xconf->nbrp_list)->lh_first); (nbrp )!= ((void *)0); (nbrp) = ((nbrp)->entry.le_next)) { |
720 | if (main_imsg_compose_both(IMSG_RECONF_NBRP, nbrp, |
721 | sizeof(*nbrp)) == -1) |
722 | return (-1); |
723 | } |
724 | |
725 | LIST_FOREACH(l2vpn, &xconf->l2vpn_list, entry)for((l2vpn) = ((&xconf->l2vpn_list)->lh_first); (l2vpn )!= ((void *)0); (l2vpn) = ((l2vpn)->entry.le_next)) { |
726 | if (main_imsg_compose_both(IMSG_RECONF_L2VPN, l2vpn, |
727 | sizeof(*l2vpn)) == -1) |
728 | return (-1); |
729 | |
730 | LIST_FOREACH(lif, &l2vpn->if_list, entry)for((lif) = ((&l2vpn->if_list)->lh_first); (lif)!= ( (void *)0); (lif) = ((lif)->entry.le_next)) { |
731 | if (main_imsg_compose_both(IMSG_RECONF_L2VPN_IF, lif, |
732 | sizeof(*lif)) == -1) |
733 | return (-1); |
734 | } |
735 | LIST_FOREACH(pw, &l2vpn->pw_list, entry)for((pw) = ((&l2vpn->pw_list)->lh_first); (pw)!= (( void *)0); (pw) = ((pw)->entry.le_next)) { |
736 | if (main_imsg_compose_both(IMSG_RECONF_L2VPN_PW, pw, |
737 | sizeof(*pw)) == -1) |
738 | return (-1); |
739 | } |
740 | } |
741 | |
742 | if (main_imsg_compose_both(IMSG_RECONF_END, NULL((void *)0), 0) == -1) |
743 | return (-1); |
744 | |
745 | return (0); |
746 | } |
747 | |
748 | static int |
749 | ldp_reload(void) |
750 | { |
751 | struct ldpd_conf *xconf; |
752 | |
753 | if ((xconf = parse_config(conffile)) == NULL((void *)0)) |
754 | return (-1); |
755 | |
756 | if (main_imsg_send_config(xconf) == -1) |
757 | return (-1); |
758 | |
759 | merge_config(ldpd_conf, xconf); |
760 | |
761 | return (0); |
762 | } |
763 | |
764 | void |
765 | merge_config(struct ldpd_conf *conf, struct ldpd_conf *xconf) |
766 | { |
767 | merge_global(conf, xconf); |
768 | merge_auths(conf, xconf); |
769 | merge_af(AF_INET2, &conf->ipv4, &xconf->ipv4); |
770 | merge_af(AF_INET624, &conf->ipv6, &xconf->ipv6); |
771 | merge_ifaces(conf, xconf); |
772 | merge_tnbrs(conf, xconf); |
773 | merge_nbrps(conf, xconf); |
774 | merge_l2vpns(conf, xconf); |
775 | free(xconf); |
776 | } |
777 | |
778 | static void |
779 | merge_global(struct ldpd_conf *conf, struct ldpd_conf *xconf) |
780 | { |
781 | /* change of router-id requires resetting all neighborships */ |
782 | if (conf->rtr_id.s_addr != xconf->rtr_id.s_addr) { |
783 | if (ldpd_process == PROC_LDP_ENGINE) { |
784 | ldpe_reset_nbrs(AF_INET2); |
785 | ldpe_reset_nbrs(AF_INET624); |
786 | if (conf->rtr_id.s_addr == INADDR_ANY((u_int32_t)(0x00000000)) || |
787 | xconf->rtr_id.s_addr == INADDR_ANY((u_int32_t)(0x00000000))) { |
788 | if_update_all(AF_UNSPEC0); |
789 | tnbr_update_all(AF_UNSPEC0); |
790 | } |
791 | } |
792 | conf->rtr_id = xconf->rtr_id; |
793 | } |
794 | |
795 | conf->rdomain= xconf->rdomain; |
796 | |
797 | if (conf->trans_pref != xconf->trans_pref) { |
798 | if (ldpd_process == PROC_LDP_ENGINE) |
799 | ldpe_reset_ds_nbrs(); |
800 | conf->trans_pref = xconf->trans_pref; |
801 | } |
802 | |
803 | if ((conf->flags & F_LDPD_DS_CISCO_INTEROP0x0002) != |
804 | (xconf->flags & F_LDPD_DS_CISCO_INTEROP0x0002)) { |
805 | if (ldpd_process == PROC_LDP_ENGINE) |
806 | ldpe_reset_ds_nbrs(); |
807 | } |
808 | |
809 | conf->flags = xconf->flags; |
810 | } |
811 | |
812 | static void |
813 | merge_af(int af, struct ldpd_af_conf *af_conf, struct ldpd_af_conf *xa) |
814 | { |
815 | int egress_label_changed = 0; |
816 | int update_sockets = 0; |
817 | |
818 | if (af_conf->keepalive != xa->keepalive) { |
819 | af_conf->keepalive = xa->keepalive; |
820 | if (ldpd_process == PROC_LDP_ENGINE) |
821 | ldpe_stop_init_backoff(af); |
822 | } |
823 | af_conf->thello_holdtime = xa->thello_holdtime; |
824 | af_conf->thello_interval = xa->thello_interval; |
825 | |
826 | /* update flags */ |
827 | if (ldpd_process == PROC_LDP_ENGINE && |
828 | (af_conf->flags & F_LDPD_AF_THELLO_ACCEPT0x0002) && |
829 | !(xa->flags & F_LDPD_AF_THELLO_ACCEPT0x0002)) |
830 | ldpe_remove_dynamic_tnbrs(af); |
831 | |
832 | if ((af_conf->flags & F_LDPD_AF_NO_GTSM0x0008) != |
833 | (xa->flags & F_LDPD_AF_NO_GTSM0x0008)) { |
834 | if (af == AF_INET624) |
835 | /* need to set/unset IPV6_MINHOPCOUNT */ |
836 | update_sockets = 1; |
837 | else if (ldpd_process == PROC_LDP_ENGINE) |
838 | /* for LDPv4 just resetting the neighbors is enough */ |
839 | ldpe_reset_nbrs(af); |
840 | } |
841 | |
842 | if ((af_conf->flags & F_LDPD_AF_EXPNULL0x0004) != |
843 | (xa->flags & F_LDPD_AF_EXPNULL0x0004)) |
844 | egress_label_changed = 1; |
845 | |
846 | af_conf->flags = xa->flags; |
847 | |
848 | if (egress_label_changed) { |
849 | switch (ldpd_process) { |
850 | case PROC_LDE_ENGINE: |
851 | lde_change_egress_label(af, af_conf->flags & |
852 | F_LDPD_AF_EXPNULL0x0004); |
853 | break; |
854 | case PROC_MAIN: |
855 | kr_change_egress_label(af, af_conf->flags & |
856 | F_LDPD_AF_EXPNULL0x0004); |
857 | break; |
858 | default: |
859 | break; |
860 | } |
861 | } |
862 | |
863 | if (ldp_addrcmp(af, &af_conf->trans_addr, &xa->trans_addr)) { |
864 | af_conf->trans_addr = xa->trans_addr; |
865 | update_sockets = 1; |
866 | } |
867 | |
868 | if (ldpd_process == PROC_MAIN && update_sockets) |
869 | imsg_compose_event(iev_ldpe, IMSG_CLOSE_SOCKETS, af, 0, -1, |
870 | NULL((void *)0), 0); |
871 | } |
872 | |
873 | static void |
874 | merge_ifaces(struct ldpd_conf *conf, struct ldpd_conf *xconf) |
875 | { |
876 | struct iface *iface, *itmp, *xi; |
877 | |
878 | LIST_FOREACH_SAFE(iface, &conf->iface_list, entry, itmp)for ((iface) = ((&conf->iface_list)->lh_first); (iface ) && ((itmp) = ((iface)->entry.le_next), 1); (iface ) = (itmp)) { |
879 | /* find deleted interfaces */ |
880 | if ((xi = if_lookup(xconf, iface->ifindex)) == NULL((void *)0)) { |
881 | LIST_REMOVE(iface, entry)do { if ((iface)->entry.le_next != ((void *)0)) (iface)-> entry.le_next->entry.le_prev = (iface)->entry.le_prev; * (iface)->entry.le_prev = (iface)->entry.le_next; ; ; } while (0); |
882 | if (ldpd_process == PROC_LDP_ENGINE) |
883 | if_exit(iface); |
884 | free(iface); |
885 | } |
886 | } |
887 | LIST_FOREACH_SAFE(xi, &xconf->iface_list, entry, itmp)for ((xi) = ((&xconf->iface_list)->lh_first); (xi) && ((itmp) = ((xi)->entry.le_next), 1); (xi) = (itmp)) { |
888 | /* find new interfaces */ |
889 | if ((iface = if_lookup(conf, xi->ifindex)) == NULL((void *)0)) { |
890 | 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); |
891 | LIST_INSERT_HEAD(&conf->iface_list, xi, entry)do { if (((xi)->entry.le_next = (&conf->iface_list) ->lh_first) != ((void *)0)) (&conf->iface_list)-> lh_first->entry.le_prev = &(xi)->entry.le_next; (& conf->iface_list)->lh_first = (xi); (xi)->entry.le_prev = &(&conf->iface_list)->lh_first; } while (0); |
892 | |
893 | /* resend addresses to activate new interfaces */ |
894 | if (ldpd_process == PROC_MAIN) |
895 | kif_redistribute(xi->name); |
896 | continue; |
897 | } |
898 | |
899 | /* update existing interfaces */ |
900 | merge_iface_af(&iface->ipv4, &xi->ipv4); |
901 | merge_iface_af(&iface->ipv6, &xi->ipv6); |
902 | 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); |
903 | free(xi); |
904 | } |
905 | } |
906 | |
907 | static void |
908 | merge_iface_af(struct iface_af *ia, struct iface_af *xi) |
909 | { |
910 | if (ia->enabled != xi->enabled) { |
911 | ia->enabled = xi->enabled; |
912 | if (ldpd_process == PROC_LDP_ENGINE) |
913 | if_update(ia->iface, ia->af); |
914 | } |
915 | ia->hello_holdtime = xi->hello_holdtime; |
916 | ia->hello_interval = xi->hello_interval; |
917 | } |
918 | |
919 | static void |
920 | merge_tnbrs(struct ldpd_conf *conf, struct ldpd_conf *xconf) |
921 | { |
922 | struct tnbr *tnbr, *ttmp, *xt; |
923 | |
924 | LIST_FOREACH_SAFE(tnbr, &conf->tnbr_list, entry, ttmp)for ((tnbr) = ((&conf->tnbr_list)->lh_first); (tnbr ) && ((ttmp) = ((tnbr)->entry.le_next), 1); (tnbr) = (ttmp)) { |
925 | if (!(tnbr->flags & F_TNBR_CONFIGURED0x01)) |
926 | continue; |
927 | |
928 | /* find deleted tnbrs */ |
929 | if ((xt = tnbr_find(xconf, tnbr->af, &tnbr->addr)) == NULL((void *)0)) { |
930 | if (ldpd_process == PROC_LDP_ENGINE) { |
931 | tnbr->flags &= ~F_TNBR_CONFIGURED0x01; |
932 | tnbr_check(tnbr); |
933 | } else { |
934 | LIST_REMOVE(tnbr, entry)do { if ((tnbr)->entry.le_next != ((void *)0)) (tnbr)-> entry.le_next->entry.le_prev = (tnbr)->entry.le_prev; * (tnbr)->entry.le_prev = (tnbr)->entry.le_next; ; ; } while (0); |
935 | free(tnbr); |
936 | } |
937 | } |
938 | } |
939 | LIST_FOREACH_SAFE(xt, &xconf->tnbr_list, entry, ttmp)for ((xt) = ((&xconf->tnbr_list)->lh_first); (xt) && ((ttmp) = ((xt)->entry.le_next), 1); (xt) = (ttmp)) { |
940 | /* find new tnbrs */ |
941 | if ((tnbr = tnbr_find(conf, xt->af, &xt->addr)) == NULL((void *)0)) { |
942 | LIST_REMOVE(xt, entry)do { if ((xt)->entry.le_next != ((void *)0)) (xt)->entry .le_next->entry.le_prev = (xt)->entry.le_prev; *(xt)-> entry.le_prev = (xt)->entry.le_next; ; ; } while (0); |
943 | LIST_INSERT_HEAD(&conf->tnbr_list, xt, entry)do { if (((xt)->entry.le_next = (&conf->tnbr_list)-> lh_first) != ((void *)0)) (&conf->tnbr_list)->lh_first ->entry.le_prev = &(xt)->entry.le_next; (&conf-> tnbr_list)->lh_first = (xt); (xt)->entry.le_prev = & (&conf->tnbr_list)->lh_first; } while (0); |
944 | |
945 | if (ldpd_process == PROC_LDP_ENGINE) |
946 | tnbr_update(xt); |
947 | continue; |
948 | } |
949 | |
950 | /* update existing tnbrs */ |
951 | if (!(tnbr->flags & F_TNBR_CONFIGURED0x01)) |
952 | tnbr->flags |= F_TNBR_CONFIGURED0x01; |
953 | tnbr->hello_holdtime = xt->hello_holdtime; |
954 | tnbr->hello_interval = xt->hello_interval; |
955 | LIST_REMOVE(xt, entry)do { if ((xt)->entry.le_next != ((void *)0)) (xt)->entry .le_next->entry.le_prev = (xt)->entry.le_prev; *(xt)-> entry.le_prev = (xt)->entry.le_next; ; ; } while (0); |
956 | free(xt); |
957 | } |
958 | } |
959 | |
960 | static void |
961 | merge_nbrps(struct ldpd_conf *conf, struct ldpd_conf *xconf) |
962 | { |
963 | struct nbr_params *nbrp, *ntmp, *xn; |
964 | struct nbr *nbr; |
965 | int nbrp_changed; |
966 | |
967 | LIST_FOREACH_SAFE(nbrp, &conf->nbrp_list, entry, ntmp)for ((nbrp) = ((&conf->nbrp_list)->lh_first); (nbrp ) && ((ntmp) = ((nbrp)->entry.le_next), 1); (nbrp) = (ntmp)) { |
968 | /* find deleted nbrps */ |
969 | if ((xn = nbr_params_find(xconf, nbrp->lsr_id)) == NULL((void *)0)) { |
970 | if (ldpd_process == PROC_LDP_ENGINE) { |
971 | nbr = nbr_find_ldpid(nbrp->lsr_id.s_addr); |
972 | if (nbr) { |
973 | session_shutdown(nbr, S_SHUTDOWN0x8000000A, 0, 0); |
974 | pfkey_remove(nbr); |
975 | if (nbr_session_active_role(nbr)) |
976 | nbr_establish_connection(nbr); |
977 | } |
978 | } |
979 | LIST_REMOVE(nbrp, entry)do { if ((nbrp)->entry.le_next != ((void *)0)) (nbrp)-> entry.le_next->entry.le_prev = (nbrp)->entry.le_prev; * (nbrp)->entry.le_prev = (nbrp)->entry.le_next; ; ; } while (0); |
980 | free(nbrp); |
981 | } |
982 | } |
983 | LIST_FOREACH_SAFE(xn, &xconf->nbrp_list, entry, ntmp)for ((xn) = ((&xconf->nbrp_list)->lh_first); (xn) && ((ntmp) = ((xn)->entry.le_next), 1); (xn) = (ntmp)) { |
984 | /* find new nbrps */ |
985 | if ((nbrp = nbr_params_find(conf, xn->lsr_id)) == NULL((void *)0)) { |
986 | LIST_REMOVE(xn, entry)do { if ((xn)->entry.le_next != ((void *)0)) (xn)->entry .le_next->entry.le_prev = (xn)->entry.le_prev; *(xn)-> entry.le_prev = (xn)->entry.le_next; ; ; } while (0); |
987 | LIST_INSERT_HEAD(&conf->nbrp_list, xn, entry)do { if (((xn)->entry.le_next = (&conf->nbrp_list)-> lh_first) != ((void *)0)) (&conf->nbrp_list)->lh_first ->entry.le_prev = &(xn)->entry.le_next; (&conf-> nbrp_list)->lh_first = (xn); (xn)->entry.le_prev = & (&conf->nbrp_list)->lh_first; } while (0); |
988 | |
989 | if (ldpd_process == PROC_LDP_ENGINE) { |
990 | nbr = nbr_find_ldpid(xn->lsr_id.s_addr); |
991 | if (nbr) { |
992 | session_shutdown(nbr, S_SHUTDOWN0x8000000A, 0, 0); |
993 | if (pfkey_establish(conf, nbr) == -1) |
994 | fatalx("pfkey setup failed"); |
995 | if (nbr_session_active_role(nbr)) |
996 | nbr_establish_connection(nbr); |
997 | } |
998 | } |
999 | continue; |
1000 | } |
1001 | |
1002 | /* update existing nbrps */ |
1003 | if (nbrp->flags != xn->flags || |
1004 | nbrp->keepalive != xn->keepalive || |
1005 | nbrp->gtsm_enabled != xn->gtsm_enabled || |
1006 | nbrp->gtsm_hops != xn->gtsm_hops) |
1007 | nbrp_changed = 1; |
1008 | else |
1009 | nbrp_changed = 0; |
1010 | |
1011 | nbrp->keepalive = xn->keepalive; |
1012 | nbrp->gtsm_enabled = xn->gtsm_enabled; |
1013 | nbrp->gtsm_hops = xn->gtsm_hops; |
1014 | nbrp->flags = xn->flags; |
1015 | |
1016 | if (ldpd_process == PROC_LDP_ENGINE) { |
1017 | nbr = nbr_find_ldpid(nbrp->lsr_id.s_addr); |
1018 | if (nbr && nbrp_changed) { |
1019 | session_shutdown(nbr, S_SHUTDOWN0x8000000A, 0, 0); |
1020 | pfkey_remove(nbr); |
1021 | if (pfkey_establish(conf, nbr) == -1) |
1022 | fatalx("pfkey setup failed"); |
1023 | if (nbr_session_active_role(nbr)) |
1024 | nbr_establish_connection(nbr); |
1025 | } |
1026 | } |
1027 | LIST_REMOVE(xn, entry)do { if ((xn)->entry.le_next != ((void *)0)) (xn)->entry .le_next->entry.le_prev = (xn)->entry.le_prev; *(xn)-> entry.le_prev = (xn)->entry.le_next; ; ; } while (0); |
1028 | free(xn); |
1029 | } |
1030 | } |
1031 | |
1032 | static void |
1033 | merge_l2vpns(struct ldpd_conf *conf, struct ldpd_conf *xconf) |
1034 | { |
1035 | struct l2vpn *l2vpn, *ltmp, *xl; |
1036 | |
1037 | LIST_FOREACH_SAFE(l2vpn, &conf->l2vpn_list, entry, ltmp)for ((l2vpn) = ((&conf->l2vpn_list)->lh_first); (l2vpn ) && ((ltmp) = ((l2vpn)->entry.le_next), 1); (l2vpn ) = (ltmp)) { |
1038 | /* find deleted l2vpns */ |
1039 | if ((xl = l2vpn_find(xconf, l2vpn->name)) == NULL((void *)0)) { |
1040 | LIST_REMOVE(l2vpn, entry)do { if ((l2vpn)->entry.le_next != ((void *)0)) (l2vpn)-> entry.le_next->entry.le_prev = (l2vpn)->entry.le_prev; * (l2vpn)->entry.le_prev = (l2vpn)->entry.le_next; ; ; } while (0); |
1041 | |
1042 | switch (ldpd_process) { |
1043 | case PROC_LDE_ENGINE: |
1044 | l2vpn_exit(l2vpn); |
1045 | break; |
1046 | case PROC_LDP_ENGINE: |
1047 | ldpe_l2vpn_exit(l2vpn); |
1048 | break; |
1049 | case PROC_MAIN: |
1050 | break; |
1051 | } |
1052 | l2vpn_del(l2vpn); |
1053 | } |
1054 | } |
1055 | LIST_FOREACH_SAFE(xl, &xconf->l2vpn_list, entry, ltmp)for ((xl) = ((&xconf->l2vpn_list)->lh_first); (xl) && ((ltmp) = ((xl)->entry.le_next), 1); (xl) = (ltmp)) { |
1056 | /* find new l2vpns */ |
1057 | if ((l2vpn = l2vpn_find(conf, xl->name)) == NULL((void *)0)) { |
1058 | LIST_REMOVE(xl, entry)do { if ((xl)->entry.le_next != ((void *)0)) (xl)->entry .le_next->entry.le_prev = (xl)->entry.le_prev; *(xl)-> entry.le_prev = (xl)->entry.le_next; ; ; } while (0); |
1059 | LIST_INSERT_HEAD(&conf->l2vpn_list, xl, entry)do { if (((xl)->entry.le_next = (&conf->l2vpn_list) ->lh_first) != ((void *)0)) (&conf->l2vpn_list)-> lh_first->entry.le_prev = &(xl)->entry.le_next; (& conf->l2vpn_list)->lh_first = (xl); (xl)->entry.le_prev = &(&conf->l2vpn_list)->lh_first; } while (0); |
1060 | |
1061 | switch (ldpd_process) { |
1062 | case PROC_LDE_ENGINE: |
1063 | l2vpn_init(xl); |
1064 | break; |
1065 | case PROC_LDP_ENGINE: |
1066 | ldpe_l2vpn_init(xl); |
1067 | break; |
1068 | case PROC_MAIN: |
1069 | break; |
1070 | } |
1071 | continue; |
1072 | } |
1073 | |
1074 | /* update existing l2vpns */ |
1075 | merge_l2vpn(conf, l2vpn, xl); |
1076 | LIST_REMOVE(xl, entry)do { if ((xl)->entry.le_next != ((void *)0)) (xl)->entry .le_next->entry.le_prev = (xl)->entry.le_prev; *(xl)-> entry.le_prev = (xl)->entry.le_next; ; ; } while (0); |
1077 | free(xl); |
1078 | } |
1079 | } |
1080 | |
1081 | static void |
1082 | merge_l2vpn(struct ldpd_conf *xconf, struct l2vpn *l2vpn, struct l2vpn *xl) |
1083 | { |
1084 | struct l2vpn_if *lif, *ftmp, *xf; |
1085 | struct l2vpn_pw *pw, *ptmp, *xp; |
1086 | struct nbr *nbr; |
1087 | int reset_nbr, reinstall_pwfec, reinstall_tnbr; |
1088 | int previous_pw_type, previous_mtu; |
1089 | |
1090 | previous_pw_type = l2vpn->pw_type; |
1091 | previous_mtu = l2vpn->mtu; |
1092 | |
1093 | /* merge intefaces */ |
1094 | LIST_FOREACH_SAFE(lif, &l2vpn->if_list, entry, ftmp)for ((lif) = ((&l2vpn->if_list)->lh_first); (lif) && ((ftmp) = ((lif)->entry.le_next), 1); (lif) = (ftmp)) { |
1095 | /* find deleted interfaces */ |
1096 | if ((xf = l2vpn_if_find(xl, lif->ifindex)) == NULL((void *)0)) { |
Although the value stored to 'xf' is used in the enclosing expression, the value is never actually read from 'xf' | |
1097 | LIST_REMOVE(lif, entry)do { if ((lif)->entry.le_next != ((void *)0)) (lif)->entry .le_next->entry.le_prev = (lif)->entry.le_prev; *(lif)-> entry.le_prev = (lif)->entry.le_next; ; ; } while (0); |
1098 | free(lif); |
1099 | } |
1100 | } |
1101 | LIST_FOREACH_SAFE(xf, &xl->if_list, entry, ftmp)for ((xf) = ((&xl->if_list)->lh_first); (xf) && ((ftmp) = ((xf)->entry.le_next), 1); (xf) = (ftmp)) { |
1102 | /* find new interfaces */ |
1103 | if ((lif = l2vpn_if_find(l2vpn, xf->ifindex)) == NULL((void *)0)) { |
1104 | LIST_REMOVE(xf, entry)do { if ((xf)->entry.le_next != ((void *)0)) (xf)->entry .le_next->entry.le_prev = (xf)->entry.le_prev; *(xf)-> entry.le_prev = (xf)->entry.le_next; ; ; } while (0); |
1105 | LIST_INSERT_HEAD(&l2vpn->if_list, xf, entry)do { if (((xf)->entry.le_next = (&l2vpn->if_list)-> lh_first) != ((void *)0)) (&l2vpn->if_list)->lh_first ->entry.le_prev = &(xf)->entry.le_next; (&l2vpn ->if_list)->lh_first = (xf); (xf)->entry.le_prev = & (&l2vpn->if_list)->lh_first; } while (0); |
1106 | xf->l2vpn = l2vpn; |
1107 | continue; |
1108 | } |
1109 | |
1110 | LIST_REMOVE(xf, entry)do { if ((xf)->entry.le_next != ((void *)0)) (xf)->entry .le_next->entry.le_prev = (xf)->entry.le_prev; *(xf)-> entry.le_prev = (xf)->entry.le_next; ; ; } while (0); |
1111 | free(xf); |
1112 | } |
1113 | |
1114 | /* merge pseudowires */ |
1115 | LIST_FOREACH_SAFE(pw, &l2vpn->pw_list, entry, ptmp)for ((pw) = ((&l2vpn->pw_list)->lh_first); (pw) && ((ptmp) = ((pw)->entry.le_next), 1); (pw) = (ptmp)) { |
1116 | /* find deleted pseudowires */ |
1117 | if ((xp = l2vpn_pw_find(xl, pw->ifindex)) == NULL((void *)0)) { |
1118 | switch (ldpd_process) { |
1119 | case PROC_LDE_ENGINE: |
1120 | l2vpn_pw_exit(pw); |
1121 | break; |
1122 | case PROC_LDP_ENGINE: |
1123 | ldpe_l2vpn_pw_exit(pw); |
1124 | break; |
1125 | case PROC_MAIN: |
1126 | break; |
1127 | } |
1128 | |
1129 | LIST_REMOVE(pw, entry)do { if ((pw)->entry.le_next != ((void *)0)) (pw)->entry .le_next->entry.le_prev = (pw)->entry.le_prev; *(pw)-> entry.le_prev = (pw)->entry.le_next; ; ; } while (0); |
1130 | free(pw); |
1131 | } |
1132 | } |
1133 | LIST_FOREACH_SAFE(xp, &xl->pw_list, entry, ptmp)for ((xp) = ((&xl->pw_list)->lh_first); (xp) && ((ptmp) = ((xp)->entry.le_next), 1); (xp) = (ptmp)) { |
1134 | /* find new pseudowires */ |
1135 | if ((pw = l2vpn_pw_find(l2vpn, xp->ifindex)) == NULL((void *)0)) { |
1136 | LIST_REMOVE(xp, entry)do { if ((xp)->entry.le_next != ((void *)0)) (xp)->entry .le_next->entry.le_prev = (xp)->entry.le_prev; *(xp)-> entry.le_prev = (xp)->entry.le_next; ; ; } while (0); |
1137 | LIST_INSERT_HEAD(&l2vpn->pw_list, xp, entry)do { if (((xp)->entry.le_next = (&l2vpn->pw_list)-> lh_first) != ((void *)0)) (&l2vpn->pw_list)->lh_first ->entry.le_prev = &(xp)->entry.le_next; (&l2vpn ->pw_list)->lh_first = (xp); (xp)->entry.le_prev = & (&l2vpn->pw_list)->lh_first; } while (0); |
1138 | xp->l2vpn = l2vpn; |
1139 | |
1140 | switch (ldpd_process) { |
1141 | case PROC_LDE_ENGINE: |
1142 | l2vpn_pw_init(xp); |
1143 | break; |
1144 | case PROC_LDP_ENGINE: |
1145 | ldpe_l2vpn_pw_init(xp); |
1146 | break; |
1147 | case PROC_MAIN: |
1148 | break; |
1149 | } |
1150 | continue; |
1151 | } |
1152 | |
1153 | /* update existing pseudowire */ |
1154 | if (pw->af != xp->af || |
1155 | ldp_addrcmp(pw->af, &pw->addr, &xp->addr)) |
1156 | reinstall_tnbr = 1; |
1157 | else |
1158 | reinstall_tnbr = 0; |
1159 | |
1160 | /* changes that require a session restart */ |
1161 | if ((pw->flags & (F_PW_STATUSTLV_CONF0x01|F_PW_CWORD_CONF0x04)) != |
1162 | (xp->flags & (F_PW_STATUSTLV_CONF0x01|F_PW_CWORD_CONF0x04))) |
1163 | reset_nbr = 1; |
1164 | else |
1165 | reset_nbr = 0; |
1166 | |
1167 | if (l2vpn->pw_type != xl->pw_type || l2vpn->mtu != xl->mtu || |
1168 | pw->pwid != xp->pwid || reinstall_tnbr || reset_nbr || |
1169 | pw->lsr_id.s_addr != xp->lsr_id.s_addr) |
1170 | reinstall_pwfec = 1; |
1171 | else |
1172 | reinstall_pwfec = 0; |
1173 | |
1174 | if (ldpd_process == PROC_LDP_ENGINE) { |
1175 | if (reinstall_tnbr) |
1176 | ldpe_l2vpn_pw_exit(pw); |
1177 | if (reset_nbr) { |
1178 | nbr = nbr_find_ldpid(pw->lsr_id.s_addr); |
1179 | if (nbr && nbr->state == NBR_STA_OPER0x0010) |
1180 | session_shutdown(nbr, S_SHUTDOWN0x8000000A, 0, 0); |
1181 | } |
1182 | } |
1183 | if (ldpd_process == PROC_LDE_ENGINE && |
1184 | !reset_nbr && reinstall_pwfec) |
1185 | l2vpn_pw_exit(pw); |
1186 | pw->lsr_id = xp->lsr_id; |
1187 | pw->af = xp->af; |
1188 | pw->addr = xp->addr; |
1189 | pw->pwid = xp->pwid; |
1190 | strlcpy(pw->ifname, xp->ifname, sizeof(pw->ifname)); |
1191 | pw->ifindex = xp->ifindex; |
1192 | if (xp->flags & F_PW_CWORD_CONF0x04) |
1193 | pw->flags |= F_PW_CWORD_CONF0x04; |
1194 | else |
1195 | pw->flags &= ~F_PW_CWORD_CONF0x04; |
1196 | if (xp->flags & F_PW_STATUSTLV_CONF0x01) |
1197 | pw->flags |= F_PW_STATUSTLV_CONF0x01; |
1198 | else |
1199 | pw->flags &= ~F_PW_STATUSTLV_CONF0x01; |
1200 | if (ldpd_process == PROC_LDP_ENGINE && reinstall_tnbr) |
1201 | ldpe_l2vpn_pw_init(pw); |
1202 | if (ldpd_process == PROC_LDE_ENGINE && |
1203 | !reset_nbr && reinstall_pwfec) { |
1204 | l2vpn->pw_type = xl->pw_type; |
1205 | l2vpn->mtu = xl->mtu; |
1206 | l2vpn_pw_init(pw); |
1207 | l2vpn->pw_type = previous_pw_type; |
1208 | l2vpn->mtu = previous_mtu; |
1209 | } |
1210 | |
1211 | LIST_REMOVE(xp, entry)do { if ((xp)->entry.le_next != ((void *)0)) (xp)->entry .le_next->entry.le_prev = (xp)->entry.le_prev; *(xp)-> entry.le_prev = (xp)->entry.le_next; ; ; } while (0); |
1212 | free(xp); |
1213 | } |
1214 | |
1215 | l2vpn->pw_type = xl->pw_type; |
1216 | l2vpn->mtu = xl->mtu; |
1217 | strlcpy(l2vpn->br_ifname, xl->br_ifname, sizeof(l2vpn->br_ifname)); |
1218 | l2vpn->br_ifindex = xl->br_ifindex; |
1219 | } |
1220 | |
1221 | static struct ldp_auth * |
1222 | auth_find(struct ldpd_conf *conf, const struct ldp_auth *needle) |
1223 | { |
1224 | struct ldp_auth *auth; |
1225 | |
1226 | LIST_FOREACH(auth, &conf->auth_list, entry)for((auth) = ((&conf->auth_list)->lh_first); (auth) != ((void *)0); (auth) = ((auth)->entry.le_next)) { |
1227 | in_addr_t mask; |
1228 | if (needle->md5key_len != auth->md5key_len) |
1229 | continue; |
1230 | if (needle->idlen != auth->idlen) |
1231 | continue; |
1232 | |
1233 | if (memcmp(needle->md5key, auth->md5key, |
1234 | needle->md5key_len) != 0) |
1235 | continue; |
1236 | |
1237 | mask = prefixlen2mask(auth->idlen); |
1238 | if ((needle->id.s_addr & mask) != (auth->id.s_addr & mask)) |
1239 | continue; |
1240 | |
1241 | return (auth); |
1242 | } |
1243 | |
1244 | return (NULL((void *)0)); |
1245 | } |
1246 | |
1247 | static void |
1248 | merge_auths(struct ldpd_conf *conf, struct ldpd_conf *xconf) |
1249 | { |
1250 | struct ldp_auth *auth, *nauth, *xauth; |
1251 | |
1252 | /* find deleted auths */ |
1253 | LIST_FOREACH_SAFE(auth, &conf->auth_list, entry, nauth)for ((auth) = ((&conf->auth_list)->lh_first); (auth ) && ((nauth) = ((auth)->entry.le_next), 1); (auth ) = (nauth)) { |
1254 | xauth = auth_find(xconf, auth); |
1255 | if (xauth == NULL((void *)0)) |
1256 | continue; |
1257 | |
1258 | LIST_REMOVE(auth, entry)do { if ((auth)->entry.le_next != ((void *)0)) (auth)-> entry.le_next->entry.le_prev = (auth)->entry.le_prev; * (auth)->entry.le_prev = (auth)->entry.le_next; ; ; } while (0); |
1259 | |
1260 | free(auth); |
1261 | } |
1262 | |
1263 | /* find new auths */ |
1264 | LIST_FOREACH_SAFE(xauth, &xconf->auth_list, entry, nauth)for ((xauth) = ((&xconf->auth_list)->lh_first); (xauth ) && ((nauth) = ((xauth)->entry.le_next), 1); (xauth ) = (nauth)) { |
1265 | LIST_REMOVE(xauth, entry)do { if ((xauth)->entry.le_next != ((void *)0)) (xauth)-> entry.le_next->entry.le_prev = (xauth)->entry.le_prev; * (xauth)->entry.le_prev = (xauth)->entry.le_next; ; ; } while (0); |
1266 | |
1267 | auth = auth_find(conf, xauth); |
1268 | if (auth == NULL((void *)0)) { |
1269 | LIST_INSERT_HEAD(&conf->auth_list, xauth, entry)do { if (((xauth)->entry.le_next = (&conf->auth_list )->lh_first) != ((void *)0)) (&conf->auth_list)-> lh_first->entry.le_prev = &(xauth)->entry.le_next; ( &conf->auth_list)->lh_first = (xauth); (xauth)-> entry.le_prev = &(&conf->auth_list)->lh_first; } while (0); |
1270 | continue; |
1271 | } |
1272 | |
1273 | free(xauth); |
1274 | } |
1275 | } |
1276 | |
1277 | struct ldpd_conf * |
1278 | config_new_empty(void) |
1279 | { |
1280 | struct ldpd_conf *xconf; |
1281 | |
1282 | xconf = calloc(1, sizeof(*xconf)); |
1283 | if (xconf == NULL((void *)0)) |
1284 | fatal(NULL((void *)0)); |
1285 | |
1286 | LIST_INIT(&xconf->iface_list)do { ((&xconf->iface_list)->lh_first) = ((void *)0) ; } while (0); |
1287 | LIST_INIT(&xconf->tnbr_list)do { ((&xconf->tnbr_list)->lh_first) = ((void *)0); } while (0); |
1288 | LIST_INIT(&xconf->nbrp_list)do { ((&xconf->nbrp_list)->lh_first) = ((void *)0); } while (0); |
1289 | LIST_INIT(&xconf->l2vpn_list)do { ((&xconf->l2vpn_list)->lh_first) = ((void *)0) ; } while (0); |
1290 | LIST_INIT(&xconf->auth_list)do { ((&xconf->auth_list)->lh_first) = ((void *)0); } while (0); |
1291 | |
1292 | return (xconf); |
1293 | } |
1294 | |
1295 | void |
1296 | config_clear(struct ldpd_conf *conf) |
1297 | { |
1298 | struct ldpd_conf *xconf; |
1299 | |
1300 | /* |
1301 | * Merge current config with an empty config, this will deactivate |
1302 | * and deallocate all the interfaces, pseudowires and so on. Before |
1303 | * merging, copy the router-id and other variables to avoid some |
1304 | * unnecessary operations, like trying to reset the neighborships. |
1305 | */ |
1306 | xconf = config_new_empty(); |
1307 | xconf->ipv4 = conf->ipv4; |
1308 | xconf->ipv6 = conf->ipv6; |
1309 | xconf->rtr_id = conf->rtr_id; |
1310 | xconf->trans_pref = conf->trans_pref; |
1311 | xconf->flags = conf->flags; |
1312 | merge_config(conf, xconf); |
1313 | free(conf); |
1314 | } |