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