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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 | { | |
eac6e3f0 RW |
69 | #if defined(VTY_GROUP) |
70 | .vty_group = VTY_GROUP, | |
71 | #endif | |
72 | .caps_p = _caps_p, | |
73 | .cap_num_p = array_size(_caps_p), | |
74 | .cap_num_i = 0 | |
75 | }; | |
76 | ||
77 | /* SIGINT / SIGTERM handler. */ | |
8429abe0 | 78 | static void |
eac6e3f0 | 79 | sigint(void) |
8429abe0 | 80 | { |
eac6e3f0 | 81 | ldpe_shutdown(); |
8429abe0 RW |
82 | } |
83 | ||
eac6e3f0 RW |
84 | static struct quagga_signal_t ldpe_signals[] = |
85 | { | |
1e7e440f RW |
86 | { |
87 | .signal = SIGHUP, | |
88 | /* ignore */ | |
89 | }, | |
eac6e3f0 RW |
90 | { |
91 | .signal = SIGINT, | |
92 | .handler = &sigint, | |
93 | }, | |
94 | { | |
95 | .signal = SIGTERM, | |
96 | .handler = &sigint, | |
97 | }, | |
98 | }; | |
99 | ||
8429abe0 RW |
100 | /* label distribution protocol engine */ |
101 | void | |
274f5abf | 102 | ldpe(void) |
8429abe0 | 103 | { |
eac6e3f0 | 104 | struct thread thread; |
8429abe0 | 105 | |
eac6e3f0 | 106 | #ifdef HAVE_SETPROCTITLE |
8429abe0 | 107 | setproctitle("ldp engine"); |
eac6e3f0 | 108 | #endif |
8429abe0 | 109 | ldpd_process = PROC_LDP_ENGINE; |
fa68f9da | 110 | log_procname = log_procnames[ldpd_process]; |
8429abe0 | 111 | |
972a411c | 112 | master = thread_master_create(NULL); |
8429abe0 RW |
113 | |
114 | /* setup signal handler */ | |
eac6e3f0 | 115 | signal_init(master, array_size(ldpe_signals), ldpe_signals); |
8429abe0 | 116 | |
28e8294c RW |
117 | /* setup pipes and event handlers to the parent process */ |
118 | if ((iev_main = calloc(1, sizeof(struct imsgev))) == NULL) | |
8429abe0 | 119 | fatal(NULL); |
28e8294c | 120 | imsg_init(&iev_main->ibuf, LDPD_FD_ASYNC); |
eac6e3f0 | 121 | iev_main->handler_read = ldpe_dispatch_main; |
66e78ae6 QY |
122 | iev_main->ev_read = NULL; |
123 | thread_add_read(master, iev_main->handler_read, iev_main, iev_main->ibuf.fd, | |
124 | &iev_main->ev_read); | |
eac6e3f0 | 125 | iev_main->handler_write = ldp_write_handler; |
28e8294c RW |
126 | |
127 | if ((iev_main_sync = calloc(1, sizeof(struct imsgev))) == NULL) | |
128 | fatal(NULL); | |
129 | imsg_init(&iev_main_sync->ibuf, LDPD_FD_SYNC); | |
eac6e3f0 | 130 | |
274f5abf RW |
131 | /* create base configuration */ |
132 | leconf = config_new_empty(); | |
133 | ||
134 | /* Fetch next active thread. */ | |
135 | while (thread_fetch(master, &thread)) | |
136 | thread_call(&thread); | |
137 | } | |
138 | ||
139 | void | |
140 | ldpe_init(struct ldpd_init *init) | |
141 | { | |
142 | /* drop privileges */ | |
af7e63a3 RW |
143 | ldpe_privs.user = init->user; |
144 | ldpe_privs.group = init->group; | |
37a1f2fb | 145 | zprivs_preinit(&ldpe_privs); |
274f5abf RW |
146 | zprivs_init(&ldpe_privs); |
147 | ||
148 | /* listen on ldpd control socket */ | |
149 | strlcpy(ctl_sock_path, init->ctl_sock_path, sizeof(ctl_sock_path)); | |
150 | if (control_init(ctl_sock_path) == -1) | |
151 | fatalx("control socket setup failed"); | |
152 | TAILQ_INIT(&ctl_conns); | |
153 | control_listen(); | |
154 | ||
274f5abf | 155 | LIST_INIT(&global.addr_list); |
45926e58 | 156 | RB_INIT(global_adj_head, &global.adj_tree); |
274f5abf RW |
157 | TAILQ_INIT(&global.pending_conns); |
158 | if (inet_pton(AF_INET, AllRouters_v4, &global.mcast_addr_v4) != 1) | |
159 | fatal("inet_pton"); | |
160 | if (inet_pton(AF_INET6, AllRouters_v6, &global.mcast_addr_v6) != 1) | |
161 | fatal("inet_pton"); | |
eac6e3f0 | 162 | #ifdef __OpenBSD__ |
274f5abf | 163 | global.pfkeysock = pfkey_init(); |
66e78ae6 QY |
164 | if (sysdep.no_pfkey == 0) { |
165 | pfkey_ev = NULL; | |
166 | thread_add_read(master, ldpe_dispatch_pfkey, NULL, global.pfkeysock, | |
167 | &pfkey_ev); | |
168 | } | |
eac6e3f0 | 169 | #endif |
8429abe0 RW |
170 | |
171 | /* mark sockets as closed */ | |
172 | global.ipv4.ldp_disc_socket = -1; | |
173 | global.ipv4.ldp_edisc_socket = -1; | |
174 | global.ipv4.ldp_session_socket = -1; | |
175 | global.ipv6.ldp_disc_socket = -1; | |
176 | global.ipv6.ldp_edisc_socket = -1; | |
177 | global.ipv6.ldp_session_socket = -1; | |
178 | ||
8429abe0 RW |
179 | if ((pkt_ptr = calloc(1, IBUF_READ_SIZE)) == NULL) |
180 | fatal(__func__); | |
181 | ||
274f5abf | 182 | accept_init(); |
8429abe0 RW |
183 | } |
184 | ||
eac6e3f0 | 185 | static void |
8429abe0 RW |
186 | ldpe_shutdown(void) |
187 | { | |
188 | struct if_addr *if_addr; | |
189 | struct adj *adj; | |
190 | ||
191 | /* close pipes */ | |
835a7376 RW |
192 | if (iev_lde) { |
193 | msgbuf_write(&iev_lde->ibuf.w); | |
194 | msgbuf_clear(&iev_lde->ibuf.w); | |
195 | close(iev_lde->ibuf.fd); | |
196 | } | |
8429abe0 RW |
197 | msgbuf_write(&iev_main->ibuf.w); |
198 | msgbuf_clear(&iev_main->ibuf.w); | |
199 | close(iev_main->ibuf.fd); | |
28e8294c RW |
200 | msgbuf_clear(&iev_main_sync->ibuf.w); |
201 | close(iev_main_sync->ibuf.fd); | |
8429abe0 | 202 | |
274f5abf | 203 | control_cleanup(ctl_sock_path); |
8429abe0 RW |
204 | config_clear(leconf); |
205 | ||
eac6e3f0 | 206 | #ifdef __OpenBSD__ |
8429abe0 | 207 | if (sysdep.no_pfkey == 0) { |
eac6e3f0 | 208 | THREAD_READ_OFF(pfkey_ev); |
8429abe0 RW |
209 | close(global.pfkeysock); |
210 | } | |
eac6e3f0 | 211 | #endif |
8429abe0 RW |
212 | ldpe_close_sockets(AF_INET); |
213 | ldpe_close_sockets(AF_INET6); | |
214 | ||
215 | /* remove addresses from global list */ | |
216 | while ((if_addr = LIST_FIRST(&global.addr_list)) != NULL) { | |
217 | LIST_REMOVE(if_addr, entry); | |
11bf8e13 | 218 | assert(if_addr != LIST_FIRST(&global.addr_list)); |
8429abe0 RW |
219 | free(if_addr); |
220 | } | |
45926e58 | 221 | while ((adj = RB_ROOT(global_adj_head, &global.adj_tree)) != NULL) |
8429abe0 RW |
222 | adj_del(adj, S_SHUTDOWN); |
223 | ||
224 | /* clean up */ | |
835a7376 RW |
225 | if (iev_lde) |
226 | free(iev_lde); | |
8429abe0 | 227 | free(iev_main); |
28e8294c | 228 | free(iev_main_sync); |
8429abe0 RW |
229 | free(pkt_ptr); |
230 | ||
231 | log_info("ldp engine exiting"); | |
232 | exit(0); | |
233 | } | |
234 | ||
235 | /* imesg */ | |
236 | int | |
237 | ldpe_imsg_compose_parent(int type, pid_t pid, void *data, uint16_t datalen) | |
238 | { | |
239 | return (imsg_compose_event(iev_main, type, 0, pid, -1, data, datalen)); | |
240 | } | |
241 | ||
f2232fdf RW |
242 | void |
243 | ldpe_imsg_compose_parent_sync(int type, pid_t pid, void *data, uint16_t datalen) | |
244 | { | |
245 | imsg_compose_event(iev_main_sync, type, 0, pid, -1, data, datalen); | |
246 | imsg_flush(&iev_main_sync->ibuf); | |
247 | } | |
248 | ||
8429abe0 RW |
249 | int |
250 | ldpe_imsg_compose_lde(int type, uint32_t peerid, pid_t pid, void *data, | |
251 | uint16_t datalen) | |
252 | { | |
253 | return (imsg_compose_event(iev_lde, type, peerid, pid, -1, | |
254 | data, datalen)); | |
255 | } | |
256 | ||
257 | /* ARGSUSED */ | |
eac6e3f0 RW |
258 | static int |
259 | ldpe_dispatch_main(struct thread *thread) | |
8429abe0 RW |
260 | { |
261 | static struct ldpd_conf *nconf; | |
262 | struct iface *niface; | |
263 | struct tnbr *ntnbr; | |
264 | struct nbr_params *nnbrp; | |
26519d8c | 265 | static struct l2vpn *l2vpn, *nl2vpn; |
52b530fc RW |
266 | struct l2vpn_if *lif, *nlif; |
267 | struct l2vpn_pw *pw, *npw; | |
8429abe0 | 268 | struct imsg imsg; |
11bf8e13 | 269 | int fd; |
eac6e3f0 | 270 | struct imsgev *iev = THREAD_ARG(thread); |
8429abe0 RW |
271 | struct imsgbuf *ibuf = &iev->ibuf; |
272 | struct iface *iface = NULL; | |
273 | struct kif *kif; | |
274 | int af; | |
275 | enum socket_type *socket_type; | |
276 | static int disc_socket = -1; | |
277 | static int edisc_socket = -1; | |
278 | static int session_socket = -1; | |
279 | struct nbr *nbr; | |
eac6e3f0 | 280 | #ifdef __OpenBSD__ |
8429abe0 | 281 | struct nbr_params *nbrp; |
eac6e3f0 | 282 | #endif |
8429abe0 RW |
283 | int n, shut = 0; |
284 | ||
eac6e3f0 RW |
285 | iev->ev_read = NULL; |
286 | ||
287 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
288 | fatal("imsg_read error"); | |
289 | if (n == 0) /* connection closed */ | |
290 | shut = 1; | |
8429abe0 RW |
291 | |
292 | for (;;) { | |
293 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
294 | fatal("ldpe_dispatch_main: imsg_get error"); | |
295 | if (n == 0) | |
296 | break; | |
297 | ||
298 | switch (imsg.hdr.type) { | |
299 | case IMSG_IFSTATUS: | |
300 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
301 | sizeof(struct kif)) | |
302 | fatalx("IFSTATUS imsg with wrong len"); | |
303 | kif = imsg.data; | |
304 | ||
eac6e3f0 | 305 | iface = if_lookup_name(leconf, kif->ifname); |
26519d8c RW |
306 | if (iface) { |
307 | if_update_info(iface, kif); | |
61cd1100 | 308 | ldp_if_update(iface, AF_UNSPEC); |
8429abe0 | 309 | break; |
26519d8c | 310 | } |
8429abe0 | 311 | |
26519d8c | 312 | RB_FOREACH(l2vpn, l2vpn_head, &leconf->l2vpn_tree) { |
52bd4c23 | 313 | lif = l2vpn_if_find(l2vpn, kif->ifname); |
26519d8c | 314 | if (lif) { |
52b530fc | 315 | l2vpn_if_update_info(lif, kif); |
26519d8c RW |
316 | l2vpn_if_update(lif); |
317 | break; | |
318 | } | |
52b530fc RW |
319 | pw = l2vpn_pw_find(l2vpn, kif->ifname); |
320 | if (pw) { | |
321 | l2vpn_pw_update_info(pw, kif); | |
322 | break; | |
323 | } | |
26519d8c | 324 | } |
8429abe0 RW |
325 | break; |
326 | case IMSG_NEWADDR: | |
327 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
328 | sizeof(struct kaddr)) | |
329 | fatalx("NEWADDR imsg with wrong len"); | |
330 | ||
331 | if_addr_add(imsg.data); | |
332 | break; | |
333 | case IMSG_DELADDR: | |
334 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
335 | sizeof(struct kaddr)) | |
336 | fatalx("DELADDR imsg with wrong len"); | |
337 | ||
338 | if_addr_del(imsg.data); | |
339 | break; | |
340 | case IMSG_SOCKET_IPC: | |
341 | if (iev_lde) { | |
342 | log_warnx("%s: received unexpected imsg fd " | |
343 | "to lde", __func__); | |
344 | break; | |
345 | } | |
346 | if ((fd = imsg.fd) == -1) { | |
347 | log_warnx("%s: expected to receive imsg fd to " | |
348 | "lde but didn't receive any", __func__); | |
349 | break; | |
350 | } | |
351 | ||
352 | if ((iev_lde = malloc(sizeof(struct imsgev))) == NULL) | |
353 | fatal(NULL); | |
354 | imsg_init(&iev_lde->ibuf, fd); | |
eac6e3f0 | 355 | iev_lde->handler_read = ldpe_dispatch_lde; |
66e78ae6 QY |
356 | iev_lde->ev_read = NULL; |
357 | thread_add_read(master, iev_lde->handler_read, iev_lde, iev_lde->ibuf.fd, | |
358 | &iev_lde->ev_read); | |
eac6e3f0 RW |
359 | iev_lde->handler_write = ldp_write_handler; |
360 | iev_lde->ev_write = NULL; | |
8429abe0 | 361 | break; |
274f5abf RW |
362 | case IMSG_INIT: |
363 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
364 | sizeof(struct ldpd_init)) | |
365 | fatalx("INIT imsg with wrong len"); | |
366 | ||
367 | memcpy(&init, imsg.data, sizeof(init)); | |
368 | ldpe_init(&init); | |
369 | break; | |
8429abe0 RW |
370 | case IMSG_CLOSE_SOCKETS: |
371 | af = imsg.hdr.peerid; | |
372 | ||
373 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
374 | if (nbr->af != af) | |
375 | continue; | |
376 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); | |
eac6e3f0 | 377 | #ifdef __OpenBSD__ |
8429abe0 | 378 | pfkey_remove(nbr); |
eac6e3f0 | 379 | #endif |
0f7b5df9 | 380 | nbr->auth.method = AUTH_NONE; |
8429abe0 RW |
381 | } |
382 | ldpe_close_sockets(af); | |
383 | if_update_all(af); | |
384 | tnbr_update_all(af); | |
385 | ||
386 | disc_socket = -1; | |
387 | edisc_socket = -1; | |
388 | session_socket = -1; | |
389 | if ((ldp_af_conf_get(leconf, af))->flags & | |
390 | F_LDPD_AF_ENABLED) | |
391 | ldpe_imsg_compose_parent(IMSG_REQUEST_SOCKETS, | |
392 | af, NULL, 0); | |
393 | break; | |
394 | case IMSG_SOCKET_NET: | |
395 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
396 | sizeof(enum socket_type)) | |
397 | fatalx("SOCKET_NET imsg with wrong len"); | |
398 | socket_type = imsg.data; | |
399 | ||
400 | switch (*socket_type) { | |
401 | case LDP_SOCKET_DISC: | |
402 | disc_socket = imsg.fd; | |
403 | break; | |
404 | case LDP_SOCKET_EDISC: | |
405 | edisc_socket = imsg.fd; | |
406 | break; | |
407 | case LDP_SOCKET_SESSION: | |
408 | session_socket = imsg.fd; | |
409 | break; | |
410 | } | |
411 | break; | |
412 | case IMSG_SETUP_SOCKETS: | |
413 | af = imsg.hdr.peerid; | |
414 | if (disc_socket == -1 || edisc_socket == -1 || | |
415 | session_socket == -1) { | |
416 | if (disc_socket != -1) | |
417 | close(disc_socket); | |
418 | if (edisc_socket != -1) | |
419 | close(edisc_socket); | |
420 | if (session_socket != -1) | |
421 | close(session_socket); | |
422 | break; | |
423 | } | |
424 | ||
425 | ldpe_setup_sockets(af, disc_socket, edisc_socket, | |
426 | session_socket); | |
427 | if_update_all(af); | |
428 | tnbr_update_all(af); | |
429 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
430 | if (nbr->af != af) | |
431 | continue; | |
432 | nbr->laddr = (ldp_af_conf_get(leconf, | |
433 | af))->trans_addr; | |
eac6e3f0 | 434 | #ifdef __OpenBSD__ |
8429abe0 | 435 | nbrp = nbr_params_find(leconf, nbr->id); |
0f7b5df9 RW |
436 | if (nbrp) { |
437 | nbr->auth.method = nbrp->auth.method; | |
438 | if (pfkey_establish(nbr, nbrp) == -1) | |
439 | fatalx("pfkey setup failed"); | |
440 | } | |
eac6e3f0 | 441 | #endif |
8429abe0 RW |
442 | if (nbr_session_active_role(nbr)) |
443 | nbr_establish_connection(nbr); | |
444 | } | |
445 | break; | |
eac6e3f0 RW |
446 | case IMSG_RTRID_UPDATE: |
447 | memcpy(&global.rtr_id, imsg.data, | |
448 | sizeof(global.rtr_id)); | |
449 | if (leconf->rtr_id.s_addr == INADDR_ANY) { | |
45a8eba9 | 450 | ldpe_reset_nbrs(AF_UNSPEC); |
eac6e3f0 RW |
451 | } |
452 | if_update_all(AF_UNSPEC); | |
453 | tnbr_update_all(AF_UNSPEC); | |
454 | break; | |
8429abe0 RW |
455 | case IMSG_RECONF_CONF: |
456 | if ((nconf = malloc(sizeof(struct ldpd_conf))) == | |
457 | NULL) | |
458 | fatal(NULL); | |
459 | memcpy(nconf, imsg.data, sizeof(struct ldpd_conf)); | |
460 | ||
45926e58 RZ |
461 | RB_INIT(iface_head, &nconf->iface_tree); |
462 | RB_INIT(tnbr_head, &nconf->tnbr_tree); | |
463 | RB_INIT(nbrp_head, &nconf->nbrp_tree); | |
464 | RB_INIT(l2vpn_head, &nconf->l2vpn_tree); | |
8429abe0 RW |
465 | break; |
466 | case IMSG_RECONF_IFACE: | |
467 | if ((niface = malloc(sizeof(struct iface))) == NULL) | |
468 | fatal(NULL); | |
469 | memcpy(niface, imsg.data, sizeof(struct iface)); | |
470 | ||
7d3d7491 | 471 | RB_INSERT(iface_head, &nconf->iface_tree, niface); |
8429abe0 RW |
472 | break; |
473 | case IMSG_RECONF_TNBR: | |
474 | if ((ntnbr = malloc(sizeof(struct tnbr))) == NULL) | |
475 | fatal(NULL); | |
476 | memcpy(ntnbr, imsg.data, sizeof(struct tnbr)); | |
477 | ||
7989cdba | 478 | RB_INSERT(tnbr_head, &nconf->tnbr_tree, ntnbr); |
8429abe0 RW |
479 | break; |
480 | case IMSG_RECONF_NBRP: | |
481 | if ((nnbrp = malloc(sizeof(struct nbr_params))) == NULL) | |
482 | fatal(NULL); | |
483 | memcpy(nnbrp, imsg.data, sizeof(struct nbr_params)); | |
484 | ||
76c4abd1 | 485 | RB_INSERT(nbrp_head, &nconf->nbrp_tree, nnbrp); |
8429abe0 RW |
486 | break; |
487 | case IMSG_RECONF_L2VPN: | |
488 | if ((nl2vpn = malloc(sizeof(struct l2vpn))) == NULL) | |
489 | fatal(NULL); | |
490 | memcpy(nl2vpn, imsg.data, sizeof(struct l2vpn)); | |
491 | ||
45926e58 RZ |
492 | RB_INIT(l2vpn_if_head, &nl2vpn->if_tree); |
493 | RB_INIT(l2vpn_pw_head, &nl2vpn->pw_tree); | |
494 | RB_INIT(l2vpn_pw_head, &nl2vpn->pw_inactive_tree); | |
8429abe0 | 495 | |
90d7e7bd | 496 | RB_INSERT(l2vpn_head, &nconf->l2vpn_tree, nl2vpn); |
8429abe0 RW |
497 | break; |
498 | case IMSG_RECONF_L2VPN_IF: | |
499 | if ((nlif = malloc(sizeof(struct l2vpn_if))) == NULL) | |
500 | fatal(NULL); | |
501 | memcpy(nlif, imsg.data, sizeof(struct l2vpn_if)); | |
502 | ||
029c1958 | 503 | RB_INSERT(l2vpn_if_head, &nl2vpn->if_tree, nlif); |
8429abe0 RW |
504 | break; |
505 | case IMSG_RECONF_L2VPN_PW: | |
506 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
507 | fatal(NULL); | |
508 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
509 | ||
20bacaeb | 510 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_tree, npw); |
8429abe0 | 511 | break; |
eac6e3f0 RW |
512 | case IMSG_RECONF_L2VPN_IPW: |
513 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
514 | fatal(NULL); | |
515 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
516 | ||
20bacaeb | 517 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_inactive_tree, npw); |
eac6e3f0 | 518 | break; |
8429abe0 RW |
519 | case IMSG_RECONF_END: |
520 | merge_config(leconf, nconf); | |
1d75a89d | 521 | ldp_clear_config(nconf); |
8429abe0 RW |
522 | nconf = NULL; |
523 | global.conf_seqnum++; | |
524 | break; | |
8429abe0 RW |
525 | case IMSG_CTL_END: |
526 | control_imsg_relay(&imsg); | |
527 | break; | |
eac6e3f0 RW |
528 | case IMSG_DEBUG_UPDATE: |
529 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
530 | sizeof(ldp_debug)) { | |
531 | log_warnx("%s: wrong imsg len", __func__); | |
532 | break; | |
533 | } | |
534 | memcpy(&ldp_debug, imsg.data, sizeof(ldp_debug)); | |
535 | break; | |
8429abe0 RW |
536 | default: |
537 | log_debug("ldpe_dispatch_main: error handling imsg %d", | |
538 | imsg.hdr.type); | |
539 | break; | |
540 | } | |
541 | imsg_free(&imsg); | |
542 | } | |
543 | if (!shut) | |
544 | imsg_event_add(iev); | |
545 | else { | |
eac6e3f0 RW |
546 | /* this pipe is dead, so remove the event handlers and exit */ |
547 | THREAD_READ_OFF(iev->ev_read); | |
548 | THREAD_WRITE_OFF(iev->ev_write); | |
549 | ldpe_shutdown(); | |
8429abe0 | 550 | } |
eac6e3f0 RW |
551 | |
552 | return (0); | |
8429abe0 RW |
553 | } |
554 | ||
555 | /* ARGSUSED */ | |
eac6e3f0 RW |
556 | static int |
557 | ldpe_dispatch_lde(struct thread *thread) | |
8429abe0 | 558 | { |
eac6e3f0 | 559 | struct imsgev *iev = THREAD_ARG(thread); |
8429abe0 RW |
560 | struct imsgbuf *ibuf = &iev->ibuf; |
561 | struct imsg imsg; | |
236c6935 RW |
562 | struct map *map; |
563 | struct notify_msg *nm; | |
564 | struct nbr *nbr; | |
8429abe0 | 565 | int n, shut = 0; |
8429abe0 | 566 | |
eac6e3f0 RW |
567 | iev->ev_read = NULL; |
568 | ||
569 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
570 | fatal("imsg_read error"); | |
571 | if (n == 0) /* connection closed */ | |
572 | shut = 1; | |
8429abe0 RW |
573 | |
574 | for (;;) { | |
575 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
576 | fatal("ldpe_dispatch_lde: imsg_get error"); | |
577 | if (n == 0) | |
578 | break; | |
579 | ||
580 | switch (imsg.hdr.type) { | |
581 | case IMSG_MAPPING_ADD: | |
582 | case IMSG_RELEASE_ADD: | |
583 | case IMSG_REQUEST_ADD: | |
584 | case IMSG_WITHDRAW_ADD: | |
236c6935 RW |
585 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
586 | sizeof(struct map)) | |
8429abe0 | 587 | fatalx("invalid size of map request"); |
236c6935 | 588 | map = imsg.data; |
8429abe0 RW |
589 | |
590 | nbr = nbr_find_peerid(imsg.hdr.peerid); | |
591 | if (nbr == NULL) { | |
592 | log_debug("ldpe_dispatch_lde: cannot find " | |
593 | "neighbor"); | |
594 | break; | |
595 | } | |
596 | if (nbr->state != NBR_STA_OPER) | |
597 | break; | |
598 | ||
599 | switch (imsg.hdr.type) { | |
600 | case IMSG_MAPPING_ADD: | |
236c6935 | 601 | mapping_list_add(&nbr->mapping_list, map); |
8429abe0 RW |
602 | break; |
603 | case IMSG_RELEASE_ADD: | |
236c6935 | 604 | mapping_list_add(&nbr->release_list, map); |
8429abe0 RW |
605 | break; |
606 | case IMSG_REQUEST_ADD: | |
236c6935 | 607 | mapping_list_add(&nbr->request_list, map); |
8429abe0 RW |
608 | break; |
609 | case IMSG_WITHDRAW_ADD: | |
236c6935 | 610 | mapping_list_add(&nbr->withdraw_list, map); |
8429abe0 RW |
611 | break; |
612 | } | |
613 | break; | |
614 | case IMSG_MAPPING_ADD_END: | |
615 | case IMSG_RELEASE_ADD_END: | |
616 | case IMSG_REQUEST_ADD_END: | |
617 | case IMSG_WITHDRAW_ADD_END: | |
618 | nbr = nbr_find_peerid(imsg.hdr.peerid); | |
619 | if (nbr == NULL) { | |
620 | log_debug("ldpe_dispatch_lde: cannot find " | |
621 | "neighbor"); | |
622 | break; | |
623 | } | |
624 | if (nbr->state != NBR_STA_OPER) | |
625 | break; | |
626 | ||
627 | switch (imsg.hdr.type) { | |
628 | case IMSG_MAPPING_ADD_END: | |
629 | send_labelmessage(nbr, MSG_TYPE_LABELMAPPING, | |
630 | &nbr->mapping_list); | |
631 | break; | |
632 | case IMSG_RELEASE_ADD_END: | |
633 | send_labelmessage(nbr, MSG_TYPE_LABELRELEASE, | |
634 | &nbr->release_list); | |
635 | break; | |
636 | case IMSG_REQUEST_ADD_END: | |
637 | send_labelmessage(nbr, MSG_TYPE_LABELREQUEST, | |
638 | &nbr->request_list); | |
639 | break; | |
640 | case IMSG_WITHDRAW_ADD_END: | |
641 | send_labelmessage(nbr, MSG_TYPE_LABELWITHDRAW, | |
642 | &nbr->withdraw_list); | |
643 | break; | |
644 | } | |
645 | break; | |
646 | case IMSG_NOTIFICATION_SEND: | |
236c6935 RW |
647 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
648 | sizeof(struct notify_msg)) | |
8429abe0 | 649 | fatalx("invalid size of OE request"); |
236c6935 | 650 | nm = imsg.data; |
8429abe0 RW |
651 | |
652 | nbr = nbr_find_peerid(imsg.hdr.peerid); | |
653 | if (nbr == NULL) { | |
654 | log_debug("ldpe_dispatch_lde: cannot find " | |
655 | "neighbor"); | |
656 | break; | |
657 | } | |
658 | if (nbr->state != NBR_STA_OPER) | |
659 | break; | |
660 | ||
236c6935 | 661 | send_notification_full(nbr->tcp, nm); |
8429abe0 RW |
662 | break; |
663 | case IMSG_CTL_END: | |
0f7b5df9 RW |
664 | case IMSG_CTL_SHOW_LIB_BEGIN: |
665 | case IMSG_CTL_SHOW_LIB_RCVD: | |
666 | case IMSG_CTL_SHOW_LIB_SENT: | |
667 | case IMSG_CTL_SHOW_LIB_END: | |
8429abe0 RW |
668 | case IMSG_CTL_SHOW_L2VPN_PW: |
669 | case IMSG_CTL_SHOW_L2VPN_BINDING: | |
670 | control_imsg_relay(&imsg); | |
671 | break; | |
672 | default: | |
673 | log_debug("ldpe_dispatch_lde: error handling imsg %d", | |
674 | imsg.hdr.type); | |
675 | break; | |
676 | } | |
677 | imsg_free(&imsg); | |
678 | } | |
679 | if (!shut) | |
680 | imsg_event_add(iev); | |
681 | else { | |
eac6e3f0 RW |
682 | /* this pipe is dead, so remove the event handlers and exit */ |
683 | THREAD_READ_OFF(iev->ev_read); | |
684 | THREAD_WRITE_OFF(iev->ev_write); | |
685 | ldpe_shutdown(); | |
8429abe0 | 686 | } |
eac6e3f0 RW |
687 | |
688 | return (0); | |
8429abe0 RW |
689 | } |
690 | ||
eac6e3f0 | 691 | #ifdef __OpenBSD__ |
8429abe0 | 692 | /* ARGSUSED */ |
eac6e3f0 RW |
693 | static int |
694 | ldpe_dispatch_pfkey(struct thread *thread) | |
8429abe0 | 695 | { |
eac6e3f0 RW |
696 | int fd = THREAD_FD(thread); |
697 | ||
66e78ae6 QY |
698 | pfkey_ev = NULL; |
699 | thread_add_read(master, ldpe_dispatch_pfkey, NULL, global.pfkeysock, | |
700 | &pfkey_ev); | |
eac6e3f0 RW |
701 | |
702 | if (pfkey_read(fd, NULL) == -1) | |
703 | fatal("pfkey_read failed, exiting..."); | |
704 | ||
705 | return (0); | |
8429abe0 | 706 | } |
eac6e3f0 | 707 | #endif /* __OpenBSD__ */ |
8429abe0 RW |
708 | |
709 | static void | |
710 | ldpe_setup_sockets(int af, int disc_socket, int edisc_socket, | |
711 | int session_socket) | |
712 | { | |
713 | struct ldpd_af_global *af_global; | |
714 | ||
715 | af_global = ldp_af_global_get(&global, af); | |
716 | ||
717 | /* discovery socket */ | |
718 | af_global->ldp_disc_socket = disc_socket; | |
66e78ae6 QY |
719 | af_global->disc_ev = NULL; |
720 | thread_add_read(master, disc_recv_packet, &af_global->disc_ev, af_global->ldp_disc_socket, | |
721 | &af_global->disc_ev); | |
8429abe0 RW |
722 | |
723 | /* extended discovery socket */ | |
724 | af_global->ldp_edisc_socket = edisc_socket; | |
66e78ae6 QY |
725 | af_global->edisc_ev = NULL; |
726 | thread_add_read(master, disc_recv_packet, &af_global->edisc_ev, af_global->ldp_edisc_socket, | |
727 | &af_global->edisc_ev); | |
8429abe0 RW |
728 | |
729 | /* session socket */ | |
730 | af_global->ldp_session_socket = session_socket; | |
731 | accept_add(af_global->ldp_session_socket, session_accept, NULL); | |
732 | } | |
733 | ||
734 | static void | |
735 | ldpe_close_sockets(int af) | |
736 | { | |
737 | struct ldpd_af_global *af_global; | |
738 | ||
739 | af_global = ldp_af_global_get(&global, af); | |
740 | ||
741 | /* discovery socket */ | |
eac6e3f0 | 742 | THREAD_READ_OFF(af_global->disc_ev); |
8429abe0 RW |
743 | if (af_global->ldp_disc_socket != -1) { |
744 | close(af_global->ldp_disc_socket); | |
745 | af_global->ldp_disc_socket = -1; | |
746 | } | |
747 | ||
748 | /* extended discovery socket */ | |
eac6e3f0 | 749 | THREAD_READ_OFF(af_global->edisc_ev); |
8429abe0 RW |
750 | if (af_global->ldp_edisc_socket != -1) { |
751 | close(af_global->ldp_edisc_socket); | |
752 | af_global->ldp_edisc_socket = -1; | |
753 | } | |
754 | ||
755 | /* session socket */ | |
756 | if (af_global->ldp_session_socket != -1) { | |
757 | accept_del(af_global->ldp_session_socket); | |
758 | close(af_global->ldp_session_socket); | |
759 | af_global->ldp_session_socket = -1; | |
760 | } | |
761 | } | |
762 | ||
45a8eba9 RW |
763 | int |
764 | ldpe_acl_check(char *acl_name, int af, union ldpd_addr *addr, uint8_t prefixlen) | |
765 | { | |
766 | return ldp_acl_request(iev_main_sync, acl_name, af, addr, prefixlen); | |
767 | } | |
768 | ||
8429abe0 RW |
769 | void |
770 | ldpe_reset_nbrs(int af) | |
771 | { | |
772 | struct nbr *nbr; | |
773 | ||
774 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
45a8eba9 | 775 | if (af == AF_UNSPEC || nbr->af == af) |
8429abe0 RW |
776 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); |
777 | } | |
778 | } | |
779 | ||
780 | void | |
781 | ldpe_reset_ds_nbrs(void) | |
782 | { | |
783 | struct nbr *nbr; | |
784 | ||
785 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
786 | if (nbr->ds_tlv) | |
787 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); | |
788 | } | |
789 | } | |
790 | ||
791 | void | |
792 | ldpe_remove_dynamic_tnbrs(int af) | |
793 | { | |
794 | struct tnbr *tnbr, *safe; | |
795 | ||
7989cdba | 796 | RB_FOREACH_SAFE(tnbr, tnbr_head, &leconf->tnbr_tree, safe) { |
8429abe0 RW |
797 | if (tnbr->af != af) |
798 | continue; | |
799 | ||
800 | tnbr->flags &= ~F_TNBR_DYNAMIC; | |
7989cdba | 801 | tnbr_check(leconf, tnbr); |
8429abe0 RW |
802 | } |
803 | } | |
804 | ||
805 | void | |
806 | ldpe_stop_init_backoff(int af) | |
807 | { | |
808 | struct nbr *nbr; | |
809 | ||
810 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
811 | if (nbr->af == af && nbr_pending_idtimer(nbr)) { | |
812 | nbr_stop_idtimer(nbr); | |
813 | nbr_establish_connection(nbr); | |
814 | } | |
815 | } | |
816 | } | |
817 | ||
818 | static void | |
819 | ldpe_iface_af_ctl(struct ctl_conn *c, int af, unsigned int idx) | |
820 | { | |
821 | struct iface *iface; | |
822 | struct iface_af *ia; | |
823 | struct ctl_iface *ictl; | |
824 | ||
7d3d7491 | 825 | RB_FOREACH(iface, iface_head, &leconf->iface_tree) { |
8429abe0 RW |
826 | if (idx == 0 || idx == iface->ifindex) { |
827 | ia = iface_af_get(iface, af); | |
828 | if (!ia->enabled) | |
829 | continue; | |
830 | ||
831 | ictl = if_to_ctl(ia); | |
05aac414 | 832 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_INTERFACE, |
8429abe0 RW |
833 | 0, 0, -1, ictl, sizeof(struct ctl_iface)); |
834 | } | |
835 | } | |
836 | } | |
837 | ||
838 | void | |
839 | ldpe_iface_ctl(struct ctl_conn *c, unsigned int idx) | |
840 | { | |
841 | ldpe_iface_af_ctl(c, AF_INET, idx); | |
842 | ldpe_iface_af_ctl(c, AF_INET6, idx); | |
843 | } | |
844 | ||
845 | void | |
846 | ldpe_adj_ctl(struct ctl_conn *c) | |
bc0eb287 RW |
847 | { |
848 | struct adj *adj; | |
849 | struct ctl_adj *actl; | |
850 | ||
851 | RB_FOREACH(adj, global_adj_head, &global.adj_tree) { | |
852 | actl = adj_to_ctl(adj); | |
853 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISCOVERY, 0, 0, | |
854 | -1, actl, sizeof(struct ctl_adj)); | |
855 | } | |
856 | ||
857 | imsg_compose_event(&c->iev, IMSG_CTL_END, 0, 0, -1, NULL, 0); | |
858 | } | |
859 | ||
860 | void | |
861 | ldpe_adj_detail_ctl(struct ctl_conn *c) | |
8429abe0 | 862 | { |
eac6e3f0 RW |
863 | struct iface *iface; |
864 | struct tnbr *tnbr; | |
865 | struct adj *adj; | |
866 | struct ctl_adj *actl; | |
867 | struct ctl_disc_if ictl; | |
868 | struct ctl_disc_tnbr tctl; | |
8429abe0 | 869 | |
eac6e3f0 RW |
870 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISCOVERY, 0, 0, -1, NULL, 0); |
871 | ||
7d3d7491 | 872 | RB_FOREACH(iface, iface_head, &leconf->iface_tree) { |
eac6e3f0 RW |
873 | memset(&ictl, 0, sizeof(ictl)); |
874 | ictl.active_v4 = (iface->ipv4.state == IF_STA_ACTIVE); | |
875 | ictl.active_v6 = (iface->ipv6.state == IF_STA_ACTIVE); | |
876 | ||
877 | if (!ictl.active_v4 && !ictl.active_v6) | |
878 | continue; | |
879 | ||
880 | strlcpy(ictl.name, iface->name, sizeof(ictl.name)); | |
45926e58 RZ |
881 | if (RB_EMPTY(ia_adj_head, &iface->ipv4.adj_tree) && |
882 | RB_EMPTY(ia_adj_head, &iface->ipv6.adj_tree)) | |
eac6e3f0 RW |
883 | ictl.no_adj = 1; |
884 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_IFACE, 0, 0, | |
885 | -1, &ictl, sizeof(ictl)); | |
886 | ||
057d48bd | 887 | RB_FOREACH(adj, ia_adj_head, &iface->ipv4.adj_tree) { |
8429abe0 | 888 | actl = adj_to_ctl(adj); |
eac6e3f0 RW |
889 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_ADJ, |
890 | 0, 0, -1, actl, sizeof(struct ctl_adj)); | |
891 | } | |
057d48bd | 892 | RB_FOREACH(adj, ia_adj_head, &iface->ipv6.adj_tree) { |
eac6e3f0 RW |
893 | actl = adj_to_ctl(adj); |
894 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_ADJ, | |
8429abe0 RW |
895 | 0, 0, -1, actl, sizeof(struct ctl_adj)); |
896 | } | |
897 | } | |
eac6e3f0 | 898 | |
7989cdba | 899 | RB_FOREACH(tnbr, tnbr_head, &leconf->tnbr_tree) { |
eac6e3f0 RW |
900 | memset(&tctl, 0, sizeof(tctl)); |
901 | tctl.af = tnbr->af; | |
902 | tctl.addr = tnbr->addr; | |
903 | if (tnbr->adj == NULL) | |
904 | tctl.no_adj = 1; | |
905 | ||
906 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_TNBR, 0, 0, | |
907 | -1, &tctl, sizeof(tctl)); | |
908 | ||
909 | if (tnbr->adj == NULL) | |
8429abe0 RW |
910 | continue; |
911 | ||
eac6e3f0 RW |
912 | actl = adj_to_ctl(tnbr->adj); |
913 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_ADJ, 0, 0, | |
8429abe0 RW |
914 | -1, actl, sizeof(struct ctl_adj)); |
915 | } | |
916 | ||
917 | imsg_compose_event(&c->iev, IMSG_CTL_END, 0, 0, -1, NULL, 0); | |
918 | } | |
919 | ||
920 | void | |
921 | ldpe_nbr_ctl(struct ctl_conn *c) | |
922 | { | |
eac6e3f0 RW |
923 | struct adj *adj; |
924 | struct ctl_adj *actl; | |
8429abe0 RW |
925 | struct nbr *nbr; |
926 | struct ctl_nbr *nctl; | |
927 | ||
928 | RB_FOREACH(nbr, nbr_addr_head, &nbrs_by_addr) { | |
eac6e3f0 RW |
929 | if (nbr->state == NBR_STA_PRESENT) |
930 | continue; | |
931 | ||
8429abe0 RW |
932 | nctl = nbr_to_ctl(nbr); |
933 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_NBR, 0, 0, -1, nctl, | |
934 | sizeof(struct ctl_nbr)); | |
eac6e3f0 | 935 | |
057d48bd | 936 | RB_FOREACH(adj, nbr_adj_head, &nbr->adj_tree) { |
eac6e3f0 RW |
937 | actl = adj_to_ctl(adj); |
938 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_NBR_DISC, | |
939 | 0, 0, -1, actl, sizeof(struct ctl_adj)); | |
940 | } | |
941 | ||
942 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_NBR_END, 0, 0, -1, | |
943 | NULL, 0); | |
8429abe0 RW |
944 | } |
945 | imsg_compose_event(&c->iev, IMSG_CTL_END, 0, 0, -1, NULL, 0); | |
946 | } | |
947 | ||
948 | void | |
949 | mapping_list_add(struct mapping_head *mh, struct map *map) | |
950 | { | |
951 | struct mapping_entry *me; | |
952 | ||
953 | me = calloc(1, sizeof(*me)); | |
954 | if (me == NULL) | |
955 | fatal(__func__); | |
956 | me->map = *map; | |
957 | ||
958 | TAILQ_INSERT_TAIL(mh, me, entry); | |
959 | } | |
960 | ||
961 | void | |
962 | mapping_list_clr(struct mapping_head *mh) | |
963 | { | |
964 | struct mapping_entry *me; | |
965 | ||
966 | while ((me = TAILQ_FIRST(mh)) != NULL) { | |
967 | TAILQ_REMOVE(mh, me, entry); | |
11bf8e13 | 968 | assert(me != TAILQ_FIRST(mh)); |
8429abe0 RW |
969 | free(me); |
970 | } | |
971 | } |