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8429abe0 RW |
1 | /* $OpenBSD$ */ |
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 | ||
eac6e3f0 | 22 | #include <zebra.h> |
8429abe0 RW |
23 | |
24 | #include "ldpd.h" | |
25 | #include "ldpe.h" | |
26 | #include "lde.h" | |
27 | #include "control.h" | |
28 | #include "log.h" | |
eac6e3f0 RW |
29 | #include "ldp_debug.h" |
30 | ||
31 | #include <lib/log.h> | |
32 | #include "memory.h" | |
33 | #include "privs.h" | |
34 | #include "sigevent.h" | |
35 | ||
36 | static void ldpe_shutdown(void); | |
37 | static int ldpe_dispatch_main(struct thread *); | |
38 | static int ldpe_dispatch_lde(struct thread *); | |
39 | #ifdef __OpenBSD__ | |
40 | static int ldpe_dispatch_pfkey(struct thread *); | |
41 | #endif | |
8429abe0 RW |
42 | static void ldpe_setup_sockets(int, int, int, int); |
43 | static void ldpe_close_sockets(int); | |
44 | static void ldpe_iface_af_ctl(struct ctl_conn *, int, unsigned int); | |
45 | ||
46 | struct ldpd_conf *leconf; | |
eac6e3f0 | 47 | #ifdef __OpenBSD__ |
8429abe0 | 48 | struct ldpd_sysdep sysdep; |
eac6e3f0 | 49 | #endif |
8429abe0 | 50 | |
28e8294c | 51 | static struct imsgev *iev_main, *iev_main_sync; |
8429abe0 | 52 | static struct imsgev *iev_lde; |
eac6e3f0 RW |
53 | #ifdef __OpenBSD__ |
54 | static struct thread *pfkey_ev; | |
55 | #endif | |
8429abe0 | 56 | |
eac6e3f0 RW |
57 | /* Master of threads. */ |
58 | struct thread_master *master; | |
59 | ||
60 | /* ldpe privileges */ | |
61 | static zebra_capabilities_t _caps_p [] = | |
62 | { | |
63 | ZCAP_BIND, | |
64 | ZCAP_NET_ADMIN | |
65 | }; | |
66 | ||
67 | struct zebra_privs_t ldpe_privs = | |
68 | { | |
b2f36157 DL |
69 | #if defined(FRR_USER) && defined(FRR_GROUP) |
70 | .user = FRR_USER, | |
71 | .group = FRR_GROUP, | |
eac6e3f0 RW |
72 | #endif |
73 | #if defined(VTY_GROUP) | |
74 | .vty_group = VTY_GROUP, | |
75 | #endif | |
76 | .caps_p = _caps_p, | |
77 | .cap_num_p = array_size(_caps_p), | |
78 | .cap_num_i = 0 | |
79 | }; | |
80 | ||
81 | /* SIGINT / SIGTERM handler. */ | |
8429abe0 | 82 | static void |
eac6e3f0 | 83 | sigint(void) |
8429abe0 | 84 | { |
eac6e3f0 | 85 | ldpe_shutdown(); |
8429abe0 RW |
86 | } |
87 | ||
eac6e3f0 RW |
88 | static struct quagga_signal_t ldpe_signals[] = |
89 | { | |
1e7e440f RW |
90 | { |
91 | .signal = SIGHUP, | |
92 | /* ignore */ | |
93 | }, | |
eac6e3f0 RW |
94 | { |
95 | .signal = SIGINT, | |
96 | .handler = &sigint, | |
97 | }, | |
98 | { | |
99 | .signal = SIGTERM, | |
100 | .handler = &sigint, | |
101 | }, | |
102 | }; | |
103 | ||
8429abe0 RW |
104 | /* label distribution protocol engine */ |
105 | void | |
274f5abf | 106 | ldpe(void) |
8429abe0 | 107 | { |
eac6e3f0 | 108 | struct thread thread; |
8429abe0 | 109 | |
eac6e3f0 | 110 | #ifdef HAVE_SETPROCTITLE |
8429abe0 | 111 | setproctitle("ldp engine"); |
eac6e3f0 | 112 | #endif |
8429abe0 | 113 | ldpd_process = PROC_LDP_ENGINE; |
fa68f9da | 114 | log_procname = log_procnames[ldpd_process]; |
8429abe0 | 115 | |
eac6e3f0 | 116 | master = thread_master_create(); |
8429abe0 RW |
117 | |
118 | /* setup signal handler */ | |
eac6e3f0 | 119 | signal_init(master, array_size(ldpe_signals), ldpe_signals); |
8429abe0 | 120 | |
28e8294c RW |
121 | /* setup pipes and event handlers to the parent process */ |
122 | if ((iev_main = calloc(1, sizeof(struct imsgev))) == NULL) | |
8429abe0 | 123 | fatal(NULL); |
28e8294c | 124 | imsg_init(&iev_main->ibuf, LDPD_FD_ASYNC); |
eac6e3f0 RW |
125 | iev_main->handler_read = ldpe_dispatch_main; |
126 | iev_main->ev_read = thread_add_read(master, iev_main->handler_read, | |
127 | iev_main, iev_main->ibuf.fd); | |
128 | iev_main->handler_write = ldp_write_handler; | |
28e8294c RW |
129 | |
130 | if ((iev_main_sync = calloc(1, sizeof(struct imsgev))) == NULL) | |
131 | fatal(NULL); | |
132 | imsg_init(&iev_main_sync->ibuf, LDPD_FD_SYNC); | |
eac6e3f0 | 133 | |
274f5abf RW |
134 | /* create base configuration */ |
135 | leconf = config_new_empty(); | |
136 | ||
137 | /* Fetch next active thread. */ | |
138 | while (thread_fetch(master, &thread)) | |
139 | thread_call(&thread); | |
140 | } | |
141 | ||
142 | void | |
143 | ldpe_init(struct ldpd_init *init) | |
144 | { | |
145 | /* drop privileges */ | |
146 | if (init->user) | |
147 | ldpe_privs.user = init->user; | |
148 | if (init->group) | |
149 | ldpe_privs.group = init->group; | |
150 | zprivs_init(&ldpe_privs); | |
151 | ||
152 | /* listen on ldpd control socket */ | |
153 | strlcpy(ctl_sock_path, init->ctl_sock_path, sizeof(ctl_sock_path)); | |
154 | if (control_init(ctl_sock_path) == -1) | |
155 | fatalx("control socket setup failed"); | |
156 | TAILQ_INIT(&ctl_conns); | |
157 | control_listen(); | |
158 | ||
159 | #ifdef HAVE_PLEDGE | |
160 | if (pledge("stdio cpath inet mcast recvfd", NULL) == -1) | |
161 | fatal("pledge"); | |
162 | #endif | |
163 | ||
164 | LIST_INIT(&global.addr_list); | |
165 | RB_INIT(&global.adj_tree); | |
166 | TAILQ_INIT(&global.pending_conns); | |
167 | if (inet_pton(AF_INET, AllRouters_v4, &global.mcast_addr_v4) != 1) | |
168 | fatal("inet_pton"); | |
169 | if (inet_pton(AF_INET6, AllRouters_v6, &global.mcast_addr_v6) != 1) | |
170 | fatal("inet_pton"); | |
eac6e3f0 | 171 | #ifdef __OpenBSD__ |
274f5abf | 172 | global.pfkeysock = pfkey_init(); |
eac6e3f0 RW |
173 | if (sysdep.no_pfkey == 0) |
174 | pfkey_ev = thread_add_read(master, ldpe_dispatch_pfkey, | |
175 | NULL, global.pfkeysock); | |
176 | #endif | |
8429abe0 RW |
177 | |
178 | /* mark sockets as closed */ | |
179 | global.ipv4.ldp_disc_socket = -1; | |
180 | global.ipv4.ldp_edisc_socket = -1; | |
181 | global.ipv4.ldp_session_socket = -1; | |
182 | global.ipv6.ldp_disc_socket = -1; | |
183 | global.ipv6.ldp_edisc_socket = -1; | |
184 | global.ipv6.ldp_session_socket = -1; | |
185 | ||
8429abe0 RW |
186 | if ((pkt_ptr = calloc(1, IBUF_READ_SIZE)) == NULL) |
187 | fatal(__func__); | |
188 | ||
274f5abf | 189 | accept_init(); |
8429abe0 RW |
190 | } |
191 | ||
eac6e3f0 | 192 | static void |
8429abe0 RW |
193 | ldpe_shutdown(void) |
194 | { | |
195 | struct if_addr *if_addr; | |
196 | struct adj *adj; | |
197 | ||
198 | /* close pipes */ | |
199 | msgbuf_write(&iev_lde->ibuf.w); | |
200 | msgbuf_clear(&iev_lde->ibuf.w); | |
201 | close(iev_lde->ibuf.fd); | |
202 | msgbuf_write(&iev_main->ibuf.w); | |
203 | msgbuf_clear(&iev_main->ibuf.w); | |
204 | close(iev_main->ibuf.fd); | |
28e8294c RW |
205 | msgbuf_clear(&iev_main_sync->ibuf.w); |
206 | close(iev_main_sync->ibuf.fd); | |
8429abe0 | 207 | |
274f5abf | 208 | control_cleanup(ctl_sock_path); |
8429abe0 RW |
209 | config_clear(leconf); |
210 | ||
eac6e3f0 | 211 | #ifdef __OpenBSD__ |
8429abe0 | 212 | if (sysdep.no_pfkey == 0) { |
eac6e3f0 | 213 | THREAD_READ_OFF(pfkey_ev); |
8429abe0 RW |
214 | close(global.pfkeysock); |
215 | } | |
eac6e3f0 | 216 | #endif |
8429abe0 RW |
217 | ldpe_close_sockets(AF_INET); |
218 | ldpe_close_sockets(AF_INET6); | |
219 | ||
220 | /* remove addresses from global list */ | |
221 | while ((if_addr = LIST_FIRST(&global.addr_list)) != NULL) { | |
222 | LIST_REMOVE(if_addr, entry); | |
223 | free(if_addr); | |
224 | } | |
057d48bd | 225 | while ((adj = RB_ROOT(&global.adj_tree)) != NULL) |
8429abe0 RW |
226 | adj_del(adj, S_SHUTDOWN); |
227 | ||
228 | /* clean up */ | |
229 | free(iev_lde); | |
230 | free(iev_main); | |
28e8294c | 231 | free(iev_main_sync); |
8429abe0 RW |
232 | free(pkt_ptr); |
233 | ||
234 | log_info("ldp engine exiting"); | |
235 | exit(0); | |
236 | } | |
237 | ||
238 | /* imesg */ | |
239 | int | |
240 | ldpe_imsg_compose_parent(int type, pid_t pid, void *data, uint16_t datalen) | |
241 | { | |
242 | return (imsg_compose_event(iev_main, type, 0, pid, -1, data, datalen)); | |
243 | } | |
244 | ||
245 | int | |
246 | ldpe_imsg_compose_lde(int type, uint32_t peerid, pid_t pid, void *data, | |
247 | uint16_t datalen) | |
248 | { | |
249 | return (imsg_compose_event(iev_lde, type, peerid, pid, -1, | |
250 | data, datalen)); | |
251 | } | |
252 | ||
253 | /* ARGSUSED */ | |
eac6e3f0 RW |
254 | static int |
255 | ldpe_dispatch_main(struct thread *thread) | |
8429abe0 RW |
256 | { |
257 | static struct ldpd_conf *nconf; | |
258 | struct iface *niface; | |
259 | struct tnbr *ntnbr; | |
260 | struct nbr_params *nnbrp; | |
26519d8c | 261 | static struct l2vpn *l2vpn, *nl2vpn; |
52b530fc RW |
262 | struct l2vpn_if *lif, *nlif; |
263 | struct l2vpn_pw *pw, *npw; | |
8429abe0 | 264 | struct imsg imsg; |
eac6e3f0 RW |
265 | int fd = THREAD_FD(thread); |
266 | struct imsgev *iev = THREAD_ARG(thread); | |
8429abe0 RW |
267 | struct imsgbuf *ibuf = &iev->ibuf; |
268 | struct iface *iface = NULL; | |
269 | struct kif *kif; | |
270 | int af; | |
271 | enum socket_type *socket_type; | |
272 | static int disc_socket = -1; | |
273 | static int edisc_socket = -1; | |
274 | static int session_socket = -1; | |
275 | struct nbr *nbr; | |
eac6e3f0 | 276 | #ifdef __OpenBSD__ |
8429abe0 | 277 | struct nbr_params *nbrp; |
eac6e3f0 | 278 | #endif |
8429abe0 RW |
279 | int n, shut = 0; |
280 | ||
eac6e3f0 RW |
281 | iev->ev_read = NULL; |
282 | ||
283 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
284 | fatal("imsg_read error"); | |
285 | if (n == 0) /* connection closed */ | |
286 | shut = 1; | |
8429abe0 RW |
287 | |
288 | for (;;) { | |
289 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
290 | fatal("ldpe_dispatch_main: imsg_get error"); | |
291 | if (n == 0) | |
292 | break; | |
293 | ||
294 | switch (imsg.hdr.type) { | |
295 | case IMSG_IFSTATUS: | |
296 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
297 | sizeof(struct kif)) | |
298 | fatalx("IFSTATUS imsg with wrong len"); | |
299 | kif = imsg.data; | |
300 | ||
eac6e3f0 | 301 | iface = if_lookup_name(leconf, kif->ifname); |
26519d8c RW |
302 | if (iface) { |
303 | if_update_info(iface, kif); | |
61cd1100 | 304 | ldp_if_update(iface, AF_UNSPEC); |
8429abe0 | 305 | break; |
26519d8c | 306 | } |
8429abe0 | 307 | |
26519d8c | 308 | RB_FOREACH(l2vpn, l2vpn_head, &leconf->l2vpn_tree) { |
52bd4c23 | 309 | lif = l2vpn_if_find(l2vpn, kif->ifname); |
26519d8c | 310 | if (lif) { |
52b530fc | 311 | l2vpn_if_update_info(lif, kif); |
26519d8c RW |
312 | l2vpn_if_update(lif); |
313 | break; | |
314 | } | |
52b530fc RW |
315 | pw = l2vpn_pw_find(l2vpn, kif->ifname); |
316 | if (pw) { | |
317 | l2vpn_pw_update_info(pw, kif); | |
318 | break; | |
319 | } | |
26519d8c | 320 | } |
8429abe0 RW |
321 | break; |
322 | case IMSG_NEWADDR: | |
323 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
324 | sizeof(struct kaddr)) | |
325 | fatalx("NEWADDR imsg with wrong len"); | |
326 | ||
327 | if_addr_add(imsg.data); | |
328 | break; | |
329 | case IMSG_DELADDR: | |
330 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
331 | sizeof(struct kaddr)) | |
332 | fatalx("DELADDR imsg with wrong len"); | |
333 | ||
334 | if_addr_del(imsg.data); | |
335 | break; | |
336 | case IMSG_SOCKET_IPC: | |
337 | if (iev_lde) { | |
338 | log_warnx("%s: received unexpected imsg fd " | |
339 | "to lde", __func__); | |
340 | break; | |
341 | } | |
342 | if ((fd = imsg.fd) == -1) { | |
343 | log_warnx("%s: expected to receive imsg fd to " | |
344 | "lde but didn't receive any", __func__); | |
345 | break; | |
346 | } | |
347 | ||
348 | if ((iev_lde = malloc(sizeof(struct imsgev))) == NULL) | |
349 | fatal(NULL); | |
350 | imsg_init(&iev_lde->ibuf, fd); | |
eac6e3f0 RW |
351 | iev_lde->handler_read = ldpe_dispatch_lde; |
352 | iev_lde->ev_read = thread_add_read(master, | |
353 | iev_lde->handler_read, iev_lde, iev_lde->ibuf.fd); | |
354 | iev_lde->handler_write = ldp_write_handler; | |
355 | iev_lde->ev_write = NULL; | |
8429abe0 | 356 | break; |
274f5abf RW |
357 | case IMSG_INIT: |
358 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
359 | sizeof(struct ldpd_init)) | |
360 | fatalx("INIT imsg with wrong len"); | |
361 | ||
362 | memcpy(&init, imsg.data, sizeof(init)); | |
363 | ldpe_init(&init); | |
364 | break; | |
8429abe0 RW |
365 | case IMSG_CLOSE_SOCKETS: |
366 | af = imsg.hdr.peerid; | |
367 | ||
368 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
369 | if (nbr->af != af) | |
370 | continue; | |
371 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); | |
eac6e3f0 | 372 | #ifdef __OpenBSD__ |
8429abe0 | 373 | pfkey_remove(nbr); |
eac6e3f0 | 374 | #endif |
0f7b5df9 | 375 | nbr->auth.method = AUTH_NONE; |
8429abe0 RW |
376 | } |
377 | ldpe_close_sockets(af); | |
378 | if_update_all(af); | |
379 | tnbr_update_all(af); | |
380 | ||
381 | disc_socket = -1; | |
382 | edisc_socket = -1; | |
383 | session_socket = -1; | |
384 | if ((ldp_af_conf_get(leconf, af))->flags & | |
385 | F_LDPD_AF_ENABLED) | |
386 | ldpe_imsg_compose_parent(IMSG_REQUEST_SOCKETS, | |
387 | af, NULL, 0); | |
388 | break; | |
389 | case IMSG_SOCKET_NET: | |
390 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
391 | sizeof(enum socket_type)) | |
392 | fatalx("SOCKET_NET imsg with wrong len"); | |
393 | socket_type = imsg.data; | |
394 | ||
395 | switch (*socket_type) { | |
396 | case LDP_SOCKET_DISC: | |
397 | disc_socket = imsg.fd; | |
398 | break; | |
399 | case LDP_SOCKET_EDISC: | |
400 | edisc_socket = imsg.fd; | |
401 | break; | |
402 | case LDP_SOCKET_SESSION: | |
403 | session_socket = imsg.fd; | |
404 | break; | |
405 | } | |
406 | break; | |
407 | case IMSG_SETUP_SOCKETS: | |
408 | af = imsg.hdr.peerid; | |
409 | if (disc_socket == -1 || edisc_socket == -1 || | |
410 | session_socket == -1) { | |
411 | if (disc_socket != -1) | |
412 | close(disc_socket); | |
413 | if (edisc_socket != -1) | |
414 | close(edisc_socket); | |
415 | if (session_socket != -1) | |
416 | close(session_socket); | |
417 | break; | |
418 | } | |
419 | ||
420 | ldpe_setup_sockets(af, disc_socket, edisc_socket, | |
421 | session_socket); | |
422 | if_update_all(af); | |
423 | tnbr_update_all(af); | |
424 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
425 | if (nbr->af != af) | |
426 | continue; | |
427 | nbr->laddr = (ldp_af_conf_get(leconf, | |
428 | af))->trans_addr; | |
eac6e3f0 | 429 | #ifdef __OpenBSD__ |
8429abe0 | 430 | nbrp = nbr_params_find(leconf, nbr->id); |
0f7b5df9 RW |
431 | if (nbrp) { |
432 | nbr->auth.method = nbrp->auth.method; | |
433 | if (pfkey_establish(nbr, nbrp) == -1) | |
434 | fatalx("pfkey setup failed"); | |
435 | } | |
eac6e3f0 | 436 | #endif |
8429abe0 RW |
437 | if (nbr_session_active_role(nbr)) |
438 | nbr_establish_connection(nbr); | |
439 | } | |
440 | break; | |
eac6e3f0 RW |
441 | case IMSG_RTRID_UPDATE: |
442 | memcpy(&global.rtr_id, imsg.data, | |
443 | sizeof(global.rtr_id)); | |
444 | if (leconf->rtr_id.s_addr == INADDR_ANY) { | |
45a8eba9 | 445 | ldpe_reset_nbrs(AF_UNSPEC); |
eac6e3f0 RW |
446 | } |
447 | if_update_all(AF_UNSPEC); | |
448 | tnbr_update_all(AF_UNSPEC); | |
449 | break; | |
8429abe0 RW |
450 | case IMSG_RECONF_CONF: |
451 | if ((nconf = malloc(sizeof(struct ldpd_conf))) == | |
452 | NULL) | |
453 | fatal(NULL); | |
454 | memcpy(nconf, imsg.data, sizeof(struct ldpd_conf)); | |
455 | ||
7d3d7491 | 456 | RB_INIT(&nconf->iface_tree); |
7989cdba | 457 | RB_INIT(&nconf->tnbr_tree); |
76c4abd1 | 458 | RB_INIT(&nconf->nbrp_tree); |
90d7e7bd | 459 | RB_INIT(&nconf->l2vpn_tree); |
8429abe0 RW |
460 | break; |
461 | case IMSG_RECONF_IFACE: | |
462 | if ((niface = malloc(sizeof(struct iface))) == NULL) | |
463 | fatal(NULL); | |
464 | memcpy(niface, imsg.data, sizeof(struct iface)); | |
465 | ||
7d3d7491 | 466 | RB_INSERT(iface_head, &nconf->iface_tree, niface); |
8429abe0 RW |
467 | break; |
468 | case IMSG_RECONF_TNBR: | |
469 | if ((ntnbr = malloc(sizeof(struct tnbr))) == NULL) | |
470 | fatal(NULL); | |
471 | memcpy(ntnbr, imsg.data, sizeof(struct tnbr)); | |
472 | ||
7989cdba | 473 | RB_INSERT(tnbr_head, &nconf->tnbr_tree, ntnbr); |
8429abe0 RW |
474 | break; |
475 | case IMSG_RECONF_NBRP: | |
476 | if ((nnbrp = malloc(sizeof(struct nbr_params))) == NULL) | |
477 | fatal(NULL); | |
478 | memcpy(nnbrp, imsg.data, sizeof(struct nbr_params)); | |
479 | ||
76c4abd1 | 480 | RB_INSERT(nbrp_head, &nconf->nbrp_tree, nnbrp); |
8429abe0 RW |
481 | break; |
482 | case IMSG_RECONF_L2VPN: | |
483 | if ((nl2vpn = malloc(sizeof(struct l2vpn))) == NULL) | |
484 | fatal(NULL); | |
485 | memcpy(nl2vpn, imsg.data, sizeof(struct l2vpn)); | |
486 | ||
029c1958 | 487 | RB_INIT(&nl2vpn->if_tree); |
20bacaeb RW |
488 | RB_INIT(&nl2vpn->pw_tree); |
489 | RB_INIT(&nl2vpn->pw_inactive_tree); | |
8429abe0 | 490 | |
90d7e7bd | 491 | RB_INSERT(l2vpn_head, &nconf->l2vpn_tree, nl2vpn); |
8429abe0 RW |
492 | break; |
493 | case IMSG_RECONF_L2VPN_IF: | |
494 | if ((nlif = malloc(sizeof(struct l2vpn_if))) == NULL) | |
495 | fatal(NULL); | |
496 | memcpy(nlif, imsg.data, sizeof(struct l2vpn_if)); | |
497 | ||
029c1958 | 498 | RB_INSERT(l2vpn_if_head, &nl2vpn->if_tree, nlif); |
8429abe0 RW |
499 | break; |
500 | case IMSG_RECONF_L2VPN_PW: | |
501 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
502 | fatal(NULL); | |
503 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
504 | ||
20bacaeb | 505 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_tree, npw); |
8429abe0 | 506 | break; |
eac6e3f0 RW |
507 | case IMSG_RECONF_L2VPN_IPW: |
508 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
509 | fatal(NULL); | |
510 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
511 | ||
20bacaeb | 512 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_inactive_tree, npw); |
eac6e3f0 | 513 | break; |
8429abe0 RW |
514 | case IMSG_RECONF_END: |
515 | merge_config(leconf, nconf); | |
1d75a89d | 516 | ldp_clear_config(nconf); |
8429abe0 RW |
517 | nconf = NULL; |
518 | global.conf_seqnum++; | |
519 | break; | |
8429abe0 RW |
520 | case IMSG_CTL_END: |
521 | control_imsg_relay(&imsg); | |
522 | break; | |
eac6e3f0 RW |
523 | case IMSG_DEBUG_UPDATE: |
524 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
525 | sizeof(ldp_debug)) { | |
526 | log_warnx("%s: wrong imsg len", __func__); | |
527 | break; | |
528 | } | |
529 | memcpy(&ldp_debug, imsg.data, sizeof(ldp_debug)); | |
530 | break; | |
8429abe0 RW |
531 | default: |
532 | log_debug("ldpe_dispatch_main: error handling imsg %d", | |
533 | imsg.hdr.type); | |
534 | break; | |
535 | } | |
536 | imsg_free(&imsg); | |
537 | } | |
538 | if (!shut) | |
539 | imsg_event_add(iev); | |
540 | else { | |
eac6e3f0 RW |
541 | /* this pipe is dead, so remove the event handlers and exit */ |
542 | THREAD_READ_OFF(iev->ev_read); | |
543 | THREAD_WRITE_OFF(iev->ev_write); | |
544 | ldpe_shutdown(); | |
8429abe0 | 545 | } |
eac6e3f0 RW |
546 | |
547 | return (0); | |
8429abe0 RW |
548 | } |
549 | ||
550 | /* ARGSUSED */ | |
eac6e3f0 RW |
551 | static int |
552 | ldpe_dispatch_lde(struct thread *thread) | |
8429abe0 | 553 | { |
eac6e3f0 | 554 | struct imsgev *iev = THREAD_ARG(thread); |
8429abe0 RW |
555 | struct imsgbuf *ibuf = &iev->ibuf; |
556 | struct imsg imsg; | |
236c6935 RW |
557 | struct map *map; |
558 | struct notify_msg *nm; | |
559 | struct nbr *nbr; | |
8429abe0 | 560 | int n, shut = 0; |
8429abe0 | 561 | |
eac6e3f0 RW |
562 | iev->ev_read = NULL; |
563 | ||
564 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
565 | fatal("imsg_read error"); | |
566 | if (n == 0) /* connection closed */ | |
567 | shut = 1; | |
8429abe0 RW |
568 | |
569 | for (;;) { | |
570 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
571 | fatal("ldpe_dispatch_lde: imsg_get error"); | |
572 | if (n == 0) | |
573 | break; | |
574 | ||
575 | switch (imsg.hdr.type) { | |
576 | case IMSG_MAPPING_ADD: | |
577 | case IMSG_RELEASE_ADD: | |
578 | case IMSG_REQUEST_ADD: | |
579 | case IMSG_WITHDRAW_ADD: | |
236c6935 RW |
580 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
581 | sizeof(struct map)) | |
8429abe0 | 582 | fatalx("invalid size of map request"); |
236c6935 | 583 | map = imsg.data; |
8429abe0 RW |
584 | |
585 | nbr = nbr_find_peerid(imsg.hdr.peerid); | |
586 | if (nbr == NULL) { | |
587 | log_debug("ldpe_dispatch_lde: cannot find " | |
588 | "neighbor"); | |
589 | break; | |
590 | } | |
591 | if (nbr->state != NBR_STA_OPER) | |
592 | break; | |
593 | ||
594 | switch (imsg.hdr.type) { | |
595 | case IMSG_MAPPING_ADD: | |
236c6935 | 596 | mapping_list_add(&nbr->mapping_list, map); |
8429abe0 RW |
597 | break; |
598 | case IMSG_RELEASE_ADD: | |
236c6935 | 599 | mapping_list_add(&nbr->release_list, map); |
8429abe0 RW |
600 | break; |
601 | case IMSG_REQUEST_ADD: | |
236c6935 | 602 | mapping_list_add(&nbr->request_list, map); |
8429abe0 RW |
603 | break; |
604 | case IMSG_WITHDRAW_ADD: | |
236c6935 | 605 | mapping_list_add(&nbr->withdraw_list, map); |
8429abe0 RW |
606 | break; |
607 | } | |
608 | break; | |
609 | case IMSG_MAPPING_ADD_END: | |
610 | case IMSG_RELEASE_ADD_END: | |
611 | case IMSG_REQUEST_ADD_END: | |
612 | case IMSG_WITHDRAW_ADD_END: | |
613 | nbr = nbr_find_peerid(imsg.hdr.peerid); | |
614 | if (nbr == NULL) { | |
615 | log_debug("ldpe_dispatch_lde: cannot find " | |
616 | "neighbor"); | |
617 | break; | |
618 | } | |
619 | if (nbr->state != NBR_STA_OPER) | |
620 | break; | |
621 | ||
622 | switch (imsg.hdr.type) { | |
623 | case IMSG_MAPPING_ADD_END: | |
624 | send_labelmessage(nbr, MSG_TYPE_LABELMAPPING, | |
625 | &nbr->mapping_list); | |
626 | break; | |
627 | case IMSG_RELEASE_ADD_END: | |
628 | send_labelmessage(nbr, MSG_TYPE_LABELRELEASE, | |
629 | &nbr->release_list); | |
630 | break; | |
631 | case IMSG_REQUEST_ADD_END: | |
632 | send_labelmessage(nbr, MSG_TYPE_LABELREQUEST, | |
633 | &nbr->request_list); | |
634 | break; | |
635 | case IMSG_WITHDRAW_ADD_END: | |
636 | send_labelmessage(nbr, MSG_TYPE_LABELWITHDRAW, | |
637 | &nbr->withdraw_list); | |
638 | break; | |
639 | } | |
640 | break; | |
641 | case IMSG_NOTIFICATION_SEND: | |
236c6935 RW |
642 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
643 | sizeof(struct notify_msg)) | |
8429abe0 | 644 | fatalx("invalid size of OE request"); |
236c6935 | 645 | nm = imsg.data; |
8429abe0 RW |
646 | |
647 | nbr = nbr_find_peerid(imsg.hdr.peerid); | |
648 | if (nbr == NULL) { | |
649 | log_debug("ldpe_dispatch_lde: cannot find " | |
650 | "neighbor"); | |
651 | break; | |
652 | } | |
653 | if (nbr->state != NBR_STA_OPER) | |
654 | break; | |
655 | ||
236c6935 | 656 | send_notification_full(nbr->tcp, nm); |
8429abe0 RW |
657 | break; |
658 | case IMSG_CTL_END: | |
0f7b5df9 RW |
659 | case IMSG_CTL_SHOW_LIB_BEGIN: |
660 | case IMSG_CTL_SHOW_LIB_RCVD: | |
661 | case IMSG_CTL_SHOW_LIB_SENT: | |
662 | case IMSG_CTL_SHOW_LIB_END: | |
8429abe0 RW |
663 | case IMSG_CTL_SHOW_L2VPN_PW: |
664 | case IMSG_CTL_SHOW_L2VPN_BINDING: | |
665 | control_imsg_relay(&imsg); | |
666 | break; | |
667 | default: | |
668 | log_debug("ldpe_dispatch_lde: error handling imsg %d", | |
669 | imsg.hdr.type); | |
670 | break; | |
671 | } | |
672 | imsg_free(&imsg); | |
673 | } | |
674 | if (!shut) | |
675 | imsg_event_add(iev); | |
676 | else { | |
eac6e3f0 RW |
677 | /* this pipe is dead, so remove the event handlers and exit */ |
678 | THREAD_READ_OFF(iev->ev_read); | |
679 | THREAD_WRITE_OFF(iev->ev_write); | |
680 | ldpe_shutdown(); | |
8429abe0 | 681 | } |
eac6e3f0 RW |
682 | |
683 | return (0); | |
8429abe0 RW |
684 | } |
685 | ||
eac6e3f0 | 686 | #ifdef __OpenBSD__ |
8429abe0 | 687 | /* ARGSUSED */ |
eac6e3f0 RW |
688 | static int |
689 | ldpe_dispatch_pfkey(struct thread *thread) | |
8429abe0 | 690 | { |
eac6e3f0 RW |
691 | int fd = THREAD_FD(thread); |
692 | ||
693 | pfkey_ev = thread_add_read(master, ldpe_dispatch_pfkey, | |
694 | NULL, global.pfkeysock); | |
695 | ||
696 | if (pfkey_read(fd, NULL) == -1) | |
697 | fatal("pfkey_read failed, exiting..."); | |
698 | ||
699 | return (0); | |
8429abe0 | 700 | } |
eac6e3f0 | 701 | #endif /* __OpenBSD__ */ |
8429abe0 RW |
702 | |
703 | static void | |
704 | ldpe_setup_sockets(int af, int disc_socket, int edisc_socket, | |
705 | int session_socket) | |
706 | { | |
707 | struct ldpd_af_global *af_global; | |
708 | ||
709 | af_global = ldp_af_global_get(&global, af); | |
710 | ||
711 | /* discovery socket */ | |
712 | af_global->ldp_disc_socket = disc_socket; | |
eac6e3f0 RW |
713 | af_global->disc_ev = thread_add_read(master, disc_recv_packet, |
714 | &af_global->disc_ev, af_global->ldp_disc_socket); | |
8429abe0 RW |
715 | |
716 | /* extended discovery socket */ | |
717 | af_global->ldp_edisc_socket = edisc_socket; | |
eac6e3f0 RW |
718 | af_global->edisc_ev = thread_add_read(master, disc_recv_packet, |
719 | &af_global->edisc_ev, af_global->ldp_edisc_socket); | |
8429abe0 RW |
720 | |
721 | /* session socket */ | |
722 | af_global->ldp_session_socket = session_socket; | |
723 | accept_add(af_global->ldp_session_socket, session_accept, NULL); | |
724 | } | |
725 | ||
726 | static void | |
727 | ldpe_close_sockets(int af) | |
728 | { | |
729 | struct ldpd_af_global *af_global; | |
730 | ||
731 | af_global = ldp_af_global_get(&global, af); | |
732 | ||
733 | /* discovery socket */ | |
eac6e3f0 | 734 | THREAD_READ_OFF(af_global->disc_ev); |
8429abe0 RW |
735 | if (af_global->ldp_disc_socket != -1) { |
736 | close(af_global->ldp_disc_socket); | |
737 | af_global->ldp_disc_socket = -1; | |
738 | } | |
739 | ||
740 | /* extended discovery socket */ | |
eac6e3f0 | 741 | THREAD_READ_OFF(af_global->edisc_ev); |
8429abe0 RW |
742 | if (af_global->ldp_edisc_socket != -1) { |
743 | close(af_global->ldp_edisc_socket); | |
744 | af_global->ldp_edisc_socket = -1; | |
745 | } | |
746 | ||
747 | /* session socket */ | |
748 | if (af_global->ldp_session_socket != -1) { | |
749 | accept_del(af_global->ldp_session_socket); | |
750 | close(af_global->ldp_session_socket); | |
751 | af_global->ldp_session_socket = -1; | |
752 | } | |
753 | } | |
754 | ||
45a8eba9 RW |
755 | int |
756 | ldpe_acl_check(char *acl_name, int af, union ldpd_addr *addr, uint8_t prefixlen) | |
757 | { | |
758 | return ldp_acl_request(iev_main_sync, acl_name, af, addr, prefixlen); | |
759 | } | |
760 | ||
8429abe0 RW |
761 | void |
762 | ldpe_reset_nbrs(int af) | |
763 | { | |
764 | struct nbr *nbr; | |
765 | ||
766 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
45a8eba9 | 767 | if (af == AF_UNSPEC || nbr->af == af) |
8429abe0 RW |
768 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); |
769 | } | |
770 | } | |
771 | ||
772 | void | |
773 | ldpe_reset_ds_nbrs(void) | |
774 | { | |
775 | struct nbr *nbr; | |
776 | ||
777 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
778 | if (nbr->ds_tlv) | |
779 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); | |
780 | } | |
781 | } | |
782 | ||
783 | void | |
784 | ldpe_remove_dynamic_tnbrs(int af) | |
785 | { | |
786 | struct tnbr *tnbr, *safe; | |
787 | ||
7989cdba | 788 | RB_FOREACH_SAFE(tnbr, tnbr_head, &leconf->tnbr_tree, safe) { |
8429abe0 RW |
789 | if (tnbr->af != af) |
790 | continue; | |
791 | ||
792 | tnbr->flags &= ~F_TNBR_DYNAMIC; | |
7989cdba | 793 | tnbr_check(leconf, tnbr); |
8429abe0 RW |
794 | } |
795 | } | |
796 | ||
797 | void | |
798 | ldpe_stop_init_backoff(int af) | |
799 | { | |
800 | struct nbr *nbr; | |
801 | ||
802 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
803 | if (nbr->af == af && nbr_pending_idtimer(nbr)) { | |
804 | nbr_stop_idtimer(nbr); | |
805 | nbr_establish_connection(nbr); | |
806 | } | |
807 | } | |
808 | } | |
809 | ||
810 | static void | |
811 | ldpe_iface_af_ctl(struct ctl_conn *c, int af, unsigned int idx) | |
812 | { | |
813 | struct iface *iface; | |
814 | struct iface_af *ia; | |
815 | struct ctl_iface *ictl; | |
816 | ||
7d3d7491 | 817 | RB_FOREACH(iface, iface_head, &leconf->iface_tree) { |
8429abe0 RW |
818 | if (idx == 0 || idx == iface->ifindex) { |
819 | ia = iface_af_get(iface, af); | |
820 | if (!ia->enabled) | |
821 | continue; | |
822 | ||
823 | ictl = if_to_ctl(ia); | |
05aac414 | 824 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_INTERFACE, |
8429abe0 RW |
825 | 0, 0, -1, ictl, sizeof(struct ctl_iface)); |
826 | } | |
827 | } | |
828 | } | |
829 | ||
830 | void | |
831 | ldpe_iface_ctl(struct ctl_conn *c, unsigned int idx) | |
832 | { | |
833 | ldpe_iface_af_ctl(c, AF_INET, idx); | |
834 | ldpe_iface_af_ctl(c, AF_INET6, idx); | |
835 | } | |
836 | ||
837 | void | |
838 | ldpe_adj_ctl(struct ctl_conn *c) | |
bc0eb287 RW |
839 | { |
840 | struct adj *adj; | |
841 | struct ctl_adj *actl; | |
842 | ||
843 | RB_FOREACH(adj, global_adj_head, &global.adj_tree) { | |
844 | actl = adj_to_ctl(adj); | |
845 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISCOVERY, 0, 0, | |
846 | -1, actl, sizeof(struct ctl_adj)); | |
847 | } | |
848 | ||
849 | imsg_compose_event(&c->iev, IMSG_CTL_END, 0, 0, -1, NULL, 0); | |
850 | } | |
851 | ||
852 | void | |
853 | ldpe_adj_detail_ctl(struct ctl_conn *c) | |
8429abe0 | 854 | { |
eac6e3f0 RW |
855 | struct iface *iface; |
856 | struct tnbr *tnbr; | |
857 | struct adj *adj; | |
858 | struct ctl_adj *actl; | |
859 | struct ctl_disc_if ictl; | |
860 | struct ctl_disc_tnbr tctl; | |
8429abe0 | 861 | |
eac6e3f0 RW |
862 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISCOVERY, 0, 0, -1, NULL, 0); |
863 | ||
7d3d7491 | 864 | RB_FOREACH(iface, iface_head, &leconf->iface_tree) { |
eac6e3f0 RW |
865 | memset(&ictl, 0, sizeof(ictl)); |
866 | ictl.active_v4 = (iface->ipv4.state == IF_STA_ACTIVE); | |
867 | ictl.active_v6 = (iface->ipv6.state == IF_STA_ACTIVE); | |
868 | ||
869 | if (!ictl.active_v4 && !ictl.active_v6) | |
870 | continue; | |
871 | ||
872 | strlcpy(ictl.name, iface->name, sizeof(ictl.name)); | |
057d48bd RW |
873 | if (RB_EMPTY(&iface->ipv4.adj_tree) && |
874 | RB_EMPTY(&iface->ipv6.adj_tree)) | |
eac6e3f0 RW |
875 | ictl.no_adj = 1; |
876 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_IFACE, 0, 0, | |
877 | -1, &ictl, sizeof(ictl)); | |
878 | ||
057d48bd | 879 | RB_FOREACH(adj, ia_adj_head, &iface->ipv4.adj_tree) { |
8429abe0 | 880 | actl = adj_to_ctl(adj); |
eac6e3f0 RW |
881 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_ADJ, |
882 | 0, 0, -1, actl, sizeof(struct ctl_adj)); | |
883 | } | |
057d48bd | 884 | RB_FOREACH(adj, ia_adj_head, &iface->ipv6.adj_tree) { |
eac6e3f0 RW |
885 | actl = adj_to_ctl(adj); |
886 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_ADJ, | |
8429abe0 RW |
887 | 0, 0, -1, actl, sizeof(struct ctl_adj)); |
888 | } | |
889 | } | |
eac6e3f0 | 890 | |
7989cdba | 891 | RB_FOREACH(tnbr, tnbr_head, &leconf->tnbr_tree) { |
eac6e3f0 RW |
892 | memset(&tctl, 0, sizeof(tctl)); |
893 | tctl.af = tnbr->af; | |
894 | tctl.addr = tnbr->addr; | |
895 | if (tnbr->adj == NULL) | |
896 | tctl.no_adj = 1; | |
897 | ||
898 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_TNBR, 0, 0, | |
899 | -1, &tctl, sizeof(tctl)); | |
900 | ||
901 | if (tnbr->adj == NULL) | |
8429abe0 RW |
902 | continue; |
903 | ||
eac6e3f0 RW |
904 | actl = adj_to_ctl(tnbr->adj); |
905 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_ADJ, 0, 0, | |
8429abe0 RW |
906 | -1, actl, sizeof(struct ctl_adj)); |
907 | } | |
908 | ||
909 | imsg_compose_event(&c->iev, IMSG_CTL_END, 0, 0, -1, NULL, 0); | |
910 | } | |
911 | ||
912 | void | |
913 | ldpe_nbr_ctl(struct ctl_conn *c) | |
914 | { | |
eac6e3f0 RW |
915 | struct adj *adj; |
916 | struct ctl_adj *actl; | |
8429abe0 RW |
917 | struct nbr *nbr; |
918 | struct ctl_nbr *nctl; | |
919 | ||
920 | RB_FOREACH(nbr, nbr_addr_head, &nbrs_by_addr) { | |
eac6e3f0 RW |
921 | if (nbr->state == NBR_STA_PRESENT) |
922 | continue; | |
923 | ||
8429abe0 RW |
924 | nctl = nbr_to_ctl(nbr); |
925 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_NBR, 0, 0, -1, nctl, | |
926 | sizeof(struct ctl_nbr)); | |
eac6e3f0 | 927 | |
057d48bd | 928 | RB_FOREACH(adj, nbr_adj_head, &nbr->adj_tree) { |
eac6e3f0 RW |
929 | actl = adj_to_ctl(adj); |
930 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_NBR_DISC, | |
931 | 0, 0, -1, actl, sizeof(struct ctl_adj)); | |
932 | } | |
933 | ||
934 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_NBR_END, 0, 0, -1, | |
935 | NULL, 0); | |
8429abe0 RW |
936 | } |
937 | imsg_compose_event(&c->iev, IMSG_CTL_END, 0, 0, -1, NULL, 0); | |
938 | } | |
939 | ||
940 | void | |
941 | mapping_list_add(struct mapping_head *mh, struct map *map) | |
942 | { | |
943 | struct mapping_entry *me; | |
944 | ||
945 | me = calloc(1, sizeof(*me)); | |
946 | if (me == NULL) | |
947 | fatal(__func__); | |
948 | me->map = *map; | |
949 | ||
950 | TAILQ_INSERT_TAIL(mh, me, entry); | |
951 | } | |
952 | ||
953 | void | |
954 | mapping_list_clr(struct mapping_head *mh) | |
955 | { | |
956 | struct mapping_entry *me; | |
957 | ||
958 | while ((me = TAILQ_FIRST(mh)) != NULL) { | |
959 | TAILQ_REMOVE(mh, me, entry); | |
960 | free(me); | |
961 | } | |
962 | } |