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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 | |
372b8bd3 | 106 | ldpe(const char *user, const char *group, const char *ctl_path) |
8429abe0 | 107 | { |
eac6e3f0 | 108 | struct thread thread; |
8429abe0 RW |
109 | |
110 | leconf = config_new_empty(); | |
111 | ||
eac6e3f0 | 112 | #ifdef HAVE_SETPROCTITLE |
8429abe0 | 113 | setproctitle("ldp engine"); |
eac6e3f0 | 114 | #endif |
8429abe0 | 115 | ldpd_process = PROC_LDP_ENGINE; |
fa68f9da | 116 | log_procname = log_procnames[ldpd_process]; |
8429abe0 | 117 | |
8429abe0 | 118 | LIST_INIT(&global.addr_list); |
057d48bd | 119 | RB_INIT(&global.adj_tree); |
8429abe0 RW |
120 | TAILQ_INIT(&global.pending_conns); |
121 | if (inet_pton(AF_INET, AllRouters_v4, &global.mcast_addr_v4) != 1) | |
122 | fatal("inet_pton"); | |
123 | if (inet_pton(AF_INET6, AllRouters_v6, &global.mcast_addr_v6) != 1) | |
124 | fatal("inet_pton"); | |
eac6e3f0 | 125 | #ifdef __OpenBSD__ |
8429abe0 | 126 | global.pfkeysock = pfkey_init(); |
eac6e3f0 | 127 | #endif |
8429abe0 | 128 | |
eac6e3f0 RW |
129 | /* drop privileges */ |
130 | if (user) | |
131 | ldpe_privs.user = user; | |
132 | if (group) | |
133 | ldpe_privs.group = group; | |
134 | zprivs_init(&ldpe_privs); | |
8429abe0 | 135 | |
372b8bd3 | 136 | strlcpy(ctl_sock_path, ctl_path, sizeof(ctl_sock_path)); |
eac6e3f0 RW |
137 | if (control_init() == -1) |
138 | fatalx("control socket setup failed"); | |
8429abe0 | 139 | |
eac6e3f0 | 140 | #ifdef HAVE_PLEDGE |
8429abe0 RW |
141 | if (pledge("stdio cpath inet mcast recvfd", NULL) == -1) |
142 | fatal("pledge"); | |
eac6e3f0 | 143 | #endif |
8429abe0 | 144 | |
eac6e3f0 | 145 | master = thread_master_create(); |
8429abe0 RW |
146 | accept_init(); |
147 | ||
148 | /* setup signal handler */ | |
eac6e3f0 | 149 | signal_init(master, array_size(ldpe_signals), ldpe_signals); |
8429abe0 | 150 | |
28e8294c RW |
151 | /* setup pipes and event handlers to the parent process */ |
152 | if ((iev_main = calloc(1, sizeof(struct imsgev))) == NULL) | |
8429abe0 | 153 | fatal(NULL); |
28e8294c | 154 | imsg_init(&iev_main->ibuf, LDPD_FD_ASYNC); |
eac6e3f0 RW |
155 | iev_main->handler_read = ldpe_dispatch_main; |
156 | iev_main->ev_read = thread_add_read(master, iev_main->handler_read, | |
157 | iev_main, iev_main->ibuf.fd); | |
158 | iev_main->handler_write = ldp_write_handler; | |
28e8294c RW |
159 | |
160 | if ((iev_main_sync = calloc(1, sizeof(struct imsgev))) == NULL) | |
161 | fatal(NULL); | |
162 | imsg_init(&iev_main_sync->ibuf, LDPD_FD_SYNC); | |
eac6e3f0 RW |
163 | |
164 | #ifdef __OpenBSD__ | |
165 | if (sysdep.no_pfkey == 0) | |
166 | pfkey_ev = thread_add_read(master, ldpe_dispatch_pfkey, | |
167 | NULL, global.pfkeysock); | |
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 | ||
178 | /* listen on ldpd control socket */ | |
179 | TAILQ_INIT(&ctl_conns); | |
180 | control_listen(); | |
181 | ||
182 | if ((pkt_ptr = calloc(1, IBUF_READ_SIZE)) == NULL) | |
183 | fatal(__func__); | |
184 | ||
eac6e3f0 RW |
185 | /* Fetch next active thread. */ |
186 | while (thread_fetch(master, &thread)) | |
187 | thread_call(&thread); | |
8429abe0 RW |
188 | } |
189 | ||
eac6e3f0 | 190 | static void |
8429abe0 RW |
191 | ldpe_shutdown(void) |
192 | { | |
193 | struct if_addr *if_addr; | |
194 | struct adj *adj; | |
195 | ||
196 | /* close pipes */ | |
197 | msgbuf_write(&iev_lde->ibuf.w); | |
198 | msgbuf_clear(&iev_lde->ibuf.w); | |
199 | close(iev_lde->ibuf.fd); | |
200 | msgbuf_write(&iev_main->ibuf.w); | |
201 | msgbuf_clear(&iev_main->ibuf.w); | |
202 | close(iev_main->ibuf.fd); | |
28e8294c RW |
203 | msgbuf_clear(&iev_main_sync->ibuf.w); |
204 | close(iev_main_sync->ibuf.fd); | |
8429abe0 RW |
205 | |
206 | control_cleanup(); | |
207 | config_clear(leconf); | |
208 | ||
eac6e3f0 | 209 | #ifdef __OpenBSD__ |
8429abe0 | 210 | if (sysdep.no_pfkey == 0) { |
eac6e3f0 | 211 | THREAD_READ_OFF(pfkey_ev); |
8429abe0 RW |
212 | close(global.pfkeysock); |
213 | } | |
eac6e3f0 | 214 | #endif |
8429abe0 RW |
215 | ldpe_close_sockets(AF_INET); |
216 | ldpe_close_sockets(AF_INET6); | |
217 | ||
218 | /* remove addresses from global list */ | |
219 | while ((if_addr = LIST_FIRST(&global.addr_list)) != NULL) { | |
220 | LIST_REMOVE(if_addr, entry); | |
221 | free(if_addr); | |
222 | } | |
057d48bd | 223 | while ((adj = RB_ROOT(&global.adj_tree)) != NULL) |
8429abe0 RW |
224 | adj_del(adj, S_SHUTDOWN); |
225 | ||
226 | /* clean up */ | |
227 | free(iev_lde); | |
228 | free(iev_main); | |
28e8294c | 229 | free(iev_main_sync); |
8429abe0 RW |
230 | free(pkt_ptr); |
231 | ||
232 | log_info("ldp engine exiting"); | |
233 | exit(0); | |
234 | } | |
235 | ||
236 | /* imesg */ | |
237 | int | |
238 | ldpe_imsg_compose_parent(int type, pid_t pid, void *data, uint16_t datalen) | |
239 | { | |
240 | return (imsg_compose_event(iev_main, type, 0, pid, -1, data, datalen)); | |
241 | } | |
242 | ||
243 | int | |
244 | ldpe_imsg_compose_lde(int type, uint32_t peerid, pid_t pid, void *data, | |
245 | uint16_t datalen) | |
246 | { | |
247 | return (imsg_compose_event(iev_lde, type, peerid, pid, -1, | |
248 | data, datalen)); | |
249 | } | |
250 | ||
251 | /* ARGSUSED */ | |
eac6e3f0 RW |
252 | static int |
253 | ldpe_dispatch_main(struct thread *thread) | |
8429abe0 RW |
254 | { |
255 | static struct ldpd_conf *nconf; | |
256 | struct iface *niface; | |
257 | struct tnbr *ntnbr; | |
258 | struct nbr_params *nnbrp; | |
26519d8c | 259 | static struct l2vpn *l2vpn, *nl2vpn; |
52b530fc RW |
260 | struct l2vpn_if *lif, *nlif; |
261 | struct l2vpn_pw *pw, *npw; | |
8429abe0 | 262 | struct imsg imsg; |
eac6e3f0 RW |
263 | int fd = THREAD_FD(thread); |
264 | struct imsgev *iev = THREAD_ARG(thread); | |
8429abe0 RW |
265 | struct imsgbuf *ibuf = &iev->ibuf; |
266 | struct iface *iface = NULL; | |
267 | struct kif *kif; | |
268 | int af; | |
269 | enum socket_type *socket_type; | |
270 | static int disc_socket = -1; | |
271 | static int edisc_socket = -1; | |
272 | static int session_socket = -1; | |
273 | struct nbr *nbr; | |
eac6e3f0 | 274 | #ifdef __OpenBSD__ |
8429abe0 | 275 | struct nbr_params *nbrp; |
eac6e3f0 | 276 | #endif |
8429abe0 RW |
277 | int n, shut = 0; |
278 | ||
eac6e3f0 RW |
279 | iev->ev_read = NULL; |
280 | ||
281 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
282 | fatal("imsg_read error"); | |
283 | if (n == 0) /* connection closed */ | |
284 | shut = 1; | |
8429abe0 RW |
285 | |
286 | for (;;) { | |
287 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
288 | fatal("ldpe_dispatch_main: imsg_get error"); | |
289 | if (n == 0) | |
290 | break; | |
291 | ||
292 | switch (imsg.hdr.type) { | |
293 | case IMSG_IFSTATUS: | |
294 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
295 | sizeof(struct kif)) | |
296 | fatalx("IFSTATUS imsg with wrong len"); | |
297 | kif = imsg.data; | |
298 | ||
eac6e3f0 | 299 | iface = if_lookup_name(leconf, kif->ifname); |
26519d8c RW |
300 | if (iface) { |
301 | if_update_info(iface, kif); | |
61cd1100 | 302 | ldp_if_update(iface, AF_UNSPEC); |
8429abe0 | 303 | break; |
26519d8c | 304 | } |
8429abe0 | 305 | |
26519d8c | 306 | RB_FOREACH(l2vpn, l2vpn_head, &leconf->l2vpn_tree) { |
52bd4c23 | 307 | lif = l2vpn_if_find(l2vpn, kif->ifname); |
26519d8c | 308 | if (lif) { |
52b530fc | 309 | l2vpn_if_update_info(lif, kif); |
26519d8c RW |
310 | l2vpn_if_update(lif); |
311 | break; | |
312 | } | |
52b530fc RW |
313 | pw = l2vpn_pw_find(l2vpn, kif->ifname); |
314 | if (pw) { | |
315 | l2vpn_pw_update_info(pw, kif); | |
316 | break; | |
317 | } | |
26519d8c | 318 | } |
8429abe0 RW |
319 | break; |
320 | case IMSG_NEWADDR: | |
321 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
322 | sizeof(struct kaddr)) | |
323 | fatalx("NEWADDR imsg with wrong len"); | |
324 | ||
325 | if_addr_add(imsg.data); | |
326 | break; | |
327 | case IMSG_DELADDR: | |
328 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
329 | sizeof(struct kaddr)) | |
330 | fatalx("DELADDR imsg with wrong len"); | |
331 | ||
332 | if_addr_del(imsg.data); | |
333 | break; | |
334 | case IMSG_SOCKET_IPC: | |
335 | if (iev_lde) { | |
336 | log_warnx("%s: received unexpected imsg fd " | |
337 | "to lde", __func__); | |
338 | break; | |
339 | } | |
340 | if ((fd = imsg.fd) == -1) { | |
341 | log_warnx("%s: expected to receive imsg fd to " | |
342 | "lde but didn't receive any", __func__); | |
343 | break; | |
344 | } | |
345 | ||
346 | if ((iev_lde = malloc(sizeof(struct imsgev))) == NULL) | |
347 | fatal(NULL); | |
348 | imsg_init(&iev_lde->ibuf, fd); | |
eac6e3f0 RW |
349 | iev_lde->handler_read = ldpe_dispatch_lde; |
350 | iev_lde->ev_read = thread_add_read(master, | |
351 | iev_lde->handler_read, iev_lde, iev_lde->ibuf.fd); | |
352 | iev_lde->handler_write = ldp_write_handler; | |
353 | iev_lde->ev_write = NULL; | |
8429abe0 RW |
354 | break; |
355 | case IMSG_CLOSE_SOCKETS: | |
356 | af = imsg.hdr.peerid; | |
357 | ||
358 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
359 | if (nbr->af != af) | |
360 | continue; | |
361 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); | |
eac6e3f0 | 362 | #ifdef __OpenBSD__ |
8429abe0 | 363 | pfkey_remove(nbr); |
eac6e3f0 | 364 | #endif |
0f7b5df9 | 365 | nbr->auth.method = AUTH_NONE; |
8429abe0 RW |
366 | } |
367 | ldpe_close_sockets(af); | |
368 | if_update_all(af); | |
369 | tnbr_update_all(af); | |
370 | ||
371 | disc_socket = -1; | |
372 | edisc_socket = -1; | |
373 | session_socket = -1; | |
374 | if ((ldp_af_conf_get(leconf, af))->flags & | |
375 | F_LDPD_AF_ENABLED) | |
376 | ldpe_imsg_compose_parent(IMSG_REQUEST_SOCKETS, | |
377 | af, NULL, 0); | |
378 | break; | |
379 | case IMSG_SOCKET_NET: | |
380 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
381 | sizeof(enum socket_type)) | |
382 | fatalx("SOCKET_NET imsg with wrong len"); | |
383 | socket_type = imsg.data; | |
384 | ||
385 | switch (*socket_type) { | |
386 | case LDP_SOCKET_DISC: | |
387 | disc_socket = imsg.fd; | |
388 | break; | |
389 | case LDP_SOCKET_EDISC: | |
390 | edisc_socket = imsg.fd; | |
391 | break; | |
392 | case LDP_SOCKET_SESSION: | |
393 | session_socket = imsg.fd; | |
394 | break; | |
395 | } | |
396 | break; | |
397 | case IMSG_SETUP_SOCKETS: | |
398 | af = imsg.hdr.peerid; | |
399 | if (disc_socket == -1 || edisc_socket == -1 || | |
400 | session_socket == -1) { | |
401 | if (disc_socket != -1) | |
402 | close(disc_socket); | |
403 | if (edisc_socket != -1) | |
404 | close(edisc_socket); | |
405 | if (session_socket != -1) | |
406 | close(session_socket); | |
407 | break; | |
408 | } | |
409 | ||
410 | ldpe_setup_sockets(af, disc_socket, edisc_socket, | |
411 | session_socket); | |
412 | if_update_all(af); | |
413 | tnbr_update_all(af); | |
414 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
415 | if (nbr->af != af) | |
416 | continue; | |
417 | nbr->laddr = (ldp_af_conf_get(leconf, | |
418 | af))->trans_addr; | |
eac6e3f0 | 419 | #ifdef __OpenBSD__ |
8429abe0 | 420 | nbrp = nbr_params_find(leconf, nbr->id); |
0f7b5df9 RW |
421 | if (nbrp) { |
422 | nbr->auth.method = nbrp->auth.method; | |
423 | if (pfkey_establish(nbr, nbrp) == -1) | |
424 | fatalx("pfkey setup failed"); | |
425 | } | |
eac6e3f0 | 426 | #endif |
8429abe0 RW |
427 | if (nbr_session_active_role(nbr)) |
428 | nbr_establish_connection(nbr); | |
429 | } | |
430 | break; | |
eac6e3f0 RW |
431 | case IMSG_RTRID_UPDATE: |
432 | memcpy(&global.rtr_id, imsg.data, | |
433 | sizeof(global.rtr_id)); | |
434 | if (leconf->rtr_id.s_addr == INADDR_ANY) { | |
45a8eba9 | 435 | ldpe_reset_nbrs(AF_UNSPEC); |
eac6e3f0 RW |
436 | } |
437 | if_update_all(AF_UNSPEC); | |
438 | tnbr_update_all(AF_UNSPEC); | |
439 | break; | |
8429abe0 RW |
440 | case IMSG_RECONF_CONF: |
441 | if ((nconf = malloc(sizeof(struct ldpd_conf))) == | |
442 | NULL) | |
443 | fatal(NULL); | |
444 | memcpy(nconf, imsg.data, sizeof(struct ldpd_conf)); | |
445 | ||
7d3d7491 | 446 | RB_INIT(&nconf->iface_tree); |
7989cdba | 447 | RB_INIT(&nconf->tnbr_tree); |
76c4abd1 | 448 | RB_INIT(&nconf->nbrp_tree); |
90d7e7bd | 449 | RB_INIT(&nconf->l2vpn_tree); |
8429abe0 RW |
450 | break; |
451 | case IMSG_RECONF_IFACE: | |
452 | if ((niface = malloc(sizeof(struct iface))) == NULL) | |
453 | fatal(NULL); | |
454 | memcpy(niface, imsg.data, sizeof(struct iface)); | |
455 | ||
7d3d7491 | 456 | RB_INSERT(iface_head, &nconf->iface_tree, niface); |
8429abe0 RW |
457 | break; |
458 | case IMSG_RECONF_TNBR: | |
459 | if ((ntnbr = malloc(sizeof(struct tnbr))) == NULL) | |
460 | fatal(NULL); | |
461 | memcpy(ntnbr, imsg.data, sizeof(struct tnbr)); | |
462 | ||
7989cdba | 463 | RB_INSERT(tnbr_head, &nconf->tnbr_tree, ntnbr); |
8429abe0 RW |
464 | break; |
465 | case IMSG_RECONF_NBRP: | |
466 | if ((nnbrp = malloc(sizeof(struct nbr_params))) == NULL) | |
467 | fatal(NULL); | |
468 | memcpy(nnbrp, imsg.data, sizeof(struct nbr_params)); | |
469 | ||
76c4abd1 | 470 | RB_INSERT(nbrp_head, &nconf->nbrp_tree, nnbrp); |
8429abe0 RW |
471 | break; |
472 | case IMSG_RECONF_L2VPN: | |
473 | if ((nl2vpn = malloc(sizeof(struct l2vpn))) == NULL) | |
474 | fatal(NULL); | |
475 | memcpy(nl2vpn, imsg.data, sizeof(struct l2vpn)); | |
476 | ||
029c1958 | 477 | RB_INIT(&nl2vpn->if_tree); |
20bacaeb RW |
478 | RB_INIT(&nl2vpn->pw_tree); |
479 | RB_INIT(&nl2vpn->pw_inactive_tree); | |
8429abe0 | 480 | |
90d7e7bd | 481 | RB_INSERT(l2vpn_head, &nconf->l2vpn_tree, nl2vpn); |
8429abe0 RW |
482 | break; |
483 | case IMSG_RECONF_L2VPN_IF: | |
484 | if ((nlif = malloc(sizeof(struct l2vpn_if))) == NULL) | |
485 | fatal(NULL); | |
486 | memcpy(nlif, imsg.data, sizeof(struct l2vpn_if)); | |
487 | ||
029c1958 | 488 | RB_INSERT(l2vpn_if_head, &nl2vpn->if_tree, nlif); |
8429abe0 RW |
489 | break; |
490 | case IMSG_RECONF_L2VPN_PW: | |
491 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
492 | fatal(NULL); | |
493 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
494 | ||
20bacaeb | 495 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_tree, npw); |
8429abe0 | 496 | break; |
eac6e3f0 RW |
497 | case IMSG_RECONF_L2VPN_IPW: |
498 | if ((npw = malloc(sizeof(struct l2vpn_pw))) == NULL) | |
499 | fatal(NULL); | |
500 | memcpy(npw, imsg.data, sizeof(struct l2vpn_pw)); | |
501 | ||
20bacaeb | 502 | RB_INSERT(l2vpn_pw_head, &nl2vpn->pw_inactive_tree, npw); |
eac6e3f0 | 503 | break; |
8429abe0 RW |
504 | case IMSG_RECONF_END: |
505 | merge_config(leconf, nconf); | |
1d75a89d | 506 | ldp_clear_config(nconf); |
8429abe0 RW |
507 | nconf = NULL; |
508 | global.conf_seqnum++; | |
509 | break; | |
8429abe0 RW |
510 | case IMSG_CTL_END: |
511 | control_imsg_relay(&imsg); | |
512 | break; | |
eac6e3f0 RW |
513 | case IMSG_DEBUG_UPDATE: |
514 | if (imsg.hdr.len != IMSG_HEADER_SIZE + | |
515 | sizeof(ldp_debug)) { | |
516 | log_warnx("%s: wrong imsg len", __func__); | |
517 | break; | |
518 | } | |
519 | memcpy(&ldp_debug, imsg.data, sizeof(ldp_debug)); | |
520 | break; | |
8429abe0 RW |
521 | default: |
522 | log_debug("ldpe_dispatch_main: error handling imsg %d", | |
523 | imsg.hdr.type); | |
524 | break; | |
525 | } | |
526 | imsg_free(&imsg); | |
527 | } | |
528 | if (!shut) | |
529 | imsg_event_add(iev); | |
530 | else { | |
eac6e3f0 RW |
531 | /* this pipe is dead, so remove the event handlers and exit */ |
532 | THREAD_READ_OFF(iev->ev_read); | |
533 | THREAD_WRITE_OFF(iev->ev_write); | |
534 | ldpe_shutdown(); | |
8429abe0 | 535 | } |
eac6e3f0 RW |
536 | |
537 | return (0); | |
8429abe0 RW |
538 | } |
539 | ||
540 | /* ARGSUSED */ | |
eac6e3f0 RW |
541 | static int |
542 | ldpe_dispatch_lde(struct thread *thread) | |
8429abe0 | 543 | { |
eac6e3f0 | 544 | struct imsgev *iev = THREAD_ARG(thread); |
8429abe0 RW |
545 | struct imsgbuf *ibuf = &iev->ibuf; |
546 | struct imsg imsg; | |
236c6935 RW |
547 | struct map *map; |
548 | struct notify_msg *nm; | |
549 | struct nbr *nbr; | |
8429abe0 | 550 | int n, shut = 0; |
8429abe0 | 551 | |
eac6e3f0 RW |
552 | iev->ev_read = NULL; |
553 | ||
554 | if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) | |
555 | fatal("imsg_read error"); | |
556 | if (n == 0) /* connection closed */ | |
557 | shut = 1; | |
8429abe0 RW |
558 | |
559 | for (;;) { | |
560 | if ((n = imsg_get(ibuf, &imsg)) == -1) | |
561 | fatal("ldpe_dispatch_lde: imsg_get error"); | |
562 | if (n == 0) | |
563 | break; | |
564 | ||
565 | switch (imsg.hdr.type) { | |
566 | case IMSG_MAPPING_ADD: | |
567 | case IMSG_RELEASE_ADD: | |
568 | case IMSG_REQUEST_ADD: | |
569 | case IMSG_WITHDRAW_ADD: | |
236c6935 RW |
570 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
571 | sizeof(struct map)) | |
8429abe0 | 572 | fatalx("invalid size of map request"); |
236c6935 | 573 | map = imsg.data; |
8429abe0 RW |
574 | |
575 | nbr = nbr_find_peerid(imsg.hdr.peerid); | |
576 | if (nbr == NULL) { | |
577 | log_debug("ldpe_dispatch_lde: cannot find " | |
578 | "neighbor"); | |
579 | break; | |
580 | } | |
581 | if (nbr->state != NBR_STA_OPER) | |
582 | break; | |
583 | ||
584 | switch (imsg.hdr.type) { | |
585 | case IMSG_MAPPING_ADD: | |
236c6935 | 586 | mapping_list_add(&nbr->mapping_list, map); |
8429abe0 RW |
587 | break; |
588 | case IMSG_RELEASE_ADD: | |
236c6935 | 589 | mapping_list_add(&nbr->release_list, map); |
8429abe0 RW |
590 | break; |
591 | case IMSG_REQUEST_ADD: | |
236c6935 | 592 | mapping_list_add(&nbr->request_list, map); |
8429abe0 RW |
593 | break; |
594 | case IMSG_WITHDRAW_ADD: | |
236c6935 | 595 | mapping_list_add(&nbr->withdraw_list, map); |
8429abe0 RW |
596 | break; |
597 | } | |
598 | break; | |
599 | case IMSG_MAPPING_ADD_END: | |
600 | case IMSG_RELEASE_ADD_END: | |
601 | case IMSG_REQUEST_ADD_END: | |
602 | case IMSG_WITHDRAW_ADD_END: | |
603 | nbr = nbr_find_peerid(imsg.hdr.peerid); | |
604 | if (nbr == NULL) { | |
605 | log_debug("ldpe_dispatch_lde: cannot find " | |
606 | "neighbor"); | |
607 | break; | |
608 | } | |
609 | if (nbr->state != NBR_STA_OPER) | |
610 | break; | |
611 | ||
612 | switch (imsg.hdr.type) { | |
613 | case IMSG_MAPPING_ADD_END: | |
614 | send_labelmessage(nbr, MSG_TYPE_LABELMAPPING, | |
615 | &nbr->mapping_list); | |
616 | break; | |
617 | case IMSG_RELEASE_ADD_END: | |
618 | send_labelmessage(nbr, MSG_TYPE_LABELRELEASE, | |
619 | &nbr->release_list); | |
620 | break; | |
621 | case IMSG_REQUEST_ADD_END: | |
622 | send_labelmessage(nbr, MSG_TYPE_LABELREQUEST, | |
623 | &nbr->request_list); | |
624 | break; | |
625 | case IMSG_WITHDRAW_ADD_END: | |
626 | send_labelmessage(nbr, MSG_TYPE_LABELWITHDRAW, | |
627 | &nbr->withdraw_list); | |
628 | break; | |
629 | } | |
630 | break; | |
631 | case IMSG_NOTIFICATION_SEND: | |
236c6935 RW |
632 | if (imsg.hdr.len - IMSG_HEADER_SIZE != |
633 | sizeof(struct notify_msg)) | |
8429abe0 | 634 | fatalx("invalid size of OE request"); |
236c6935 | 635 | nm = imsg.data; |
8429abe0 RW |
636 | |
637 | nbr = nbr_find_peerid(imsg.hdr.peerid); | |
638 | if (nbr == NULL) { | |
639 | log_debug("ldpe_dispatch_lde: cannot find " | |
640 | "neighbor"); | |
641 | break; | |
642 | } | |
643 | if (nbr->state != NBR_STA_OPER) | |
644 | break; | |
645 | ||
236c6935 | 646 | send_notification_full(nbr->tcp, nm); |
8429abe0 RW |
647 | break; |
648 | case IMSG_CTL_END: | |
0f7b5df9 RW |
649 | case IMSG_CTL_SHOW_LIB_BEGIN: |
650 | case IMSG_CTL_SHOW_LIB_RCVD: | |
651 | case IMSG_CTL_SHOW_LIB_SENT: | |
652 | case IMSG_CTL_SHOW_LIB_END: | |
8429abe0 RW |
653 | case IMSG_CTL_SHOW_L2VPN_PW: |
654 | case IMSG_CTL_SHOW_L2VPN_BINDING: | |
655 | control_imsg_relay(&imsg); | |
656 | break; | |
657 | default: | |
658 | log_debug("ldpe_dispatch_lde: error handling imsg %d", | |
659 | imsg.hdr.type); | |
660 | break; | |
661 | } | |
662 | imsg_free(&imsg); | |
663 | } | |
664 | if (!shut) | |
665 | imsg_event_add(iev); | |
666 | else { | |
eac6e3f0 RW |
667 | /* this pipe is dead, so remove the event handlers and exit */ |
668 | THREAD_READ_OFF(iev->ev_read); | |
669 | THREAD_WRITE_OFF(iev->ev_write); | |
670 | ldpe_shutdown(); | |
8429abe0 | 671 | } |
eac6e3f0 RW |
672 | |
673 | return (0); | |
8429abe0 RW |
674 | } |
675 | ||
eac6e3f0 | 676 | #ifdef __OpenBSD__ |
8429abe0 | 677 | /* ARGSUSED */ |
eac6e3f0 RW |
678 | static int |
679 | ldpe_dispatch_pfkey(struct thread *thread) | |
8429abe0 | 680 | { |
eac6e3f0 RW |
681 | int fd = THREAD_FD(thread); |
682 | ||
683 | pfkey_ev = thread_add_read(master, ldpe_dispatch_pfkey, | |
684 | NULL, global.pfkeysock); | |
685 | ||
686 | if (pfkey_read(fd, NULL) == -1) | |
687 | fatal("pfkey_read failed, exiting..."); | |
688 | ||
689 | return (0); | |
8429abe0 | 690 | } |
eac6e3f0 | 691 | #endif /* __OpenBSD__ */ |
8429abe0 RW |
692 | |
693 | static void | |
694 | ldpe_setup_sockets(int af, int disc_socket, int edisc_socket, | |
695 | int session_socket) | |
696 | { | |
697 | struct ldpd_af_global *af_global; | |
698 | ||
699 | af_global = ldp_af_global_get(&global, af); | |
700 | ||
701 | /* discovery socket */ | |
702 | af_global->ldp_disc_socket = disc_socket; | |
eac6e3f0 RW |
703 | af_global->disc_ev = thread_add_read(master, disc_recv_packet, |
704 | &af_global->disc_ev, af_global->ldp_disc_socket); | |
8429abe0 RW |
705 | |
706 | /* extended discovery socket */ | |
707 | af_global->ldp_edisc_socket = edisc_socket; | |
eac6e3f0 RW |
708 | af_global->edisc_ev = thread_add_read(master, disc_recv_packet, |
709 | &af_global->edisc_ev, af_global->ldp_edisc_socket); | |
8429abe0 RW |
710 | |
711 | /* session socket */ | |
712 | af_global->ldp_session_socket = session_socket; | |
713 | accept_add(af_global->ldp_session_socket, session_accept, NULL); | |
714 | } | |
715 | ||
716 | static void | |
717 | ldpe_close_sockets(int af) | |
718 | { | |
719 | struct ldpd_af_global *af_global; | |
720 | ||
721 | af_global = ldp_af_global_get(&global, af); | |
722 | ||
723 | /* discovery socket */ | |
eac6e3f0 | 724 | THREAD_READ_OFF(af_global->disc_ev); |
8429abe0 RW |
725 | if (af_global->ldp_disc_socket != -1) { |
726 | close(af_global->ldp_disc_socket); | |
727 | af_global->ldp_disc_socket = -1; | |
728 | } | |
729 | ||
730 | /* extended discovery socket */ | |
eac6e3f0 | 731 | THREAD_READ_OFF(af_global->edisc_ev); |
8429abe0 RW |
732 | if (af_global->ldp_edisc_socket != -1) { |
733 | close(af_global->ldp_edisc_socket); | |
734 | af_global->ldp_edisc_socket = -1; | |
735 | } | |
736 | ||
737 | /* session socket */ | |
738 | if (af_global->ldp_session_socket != -1) { | |
739 | accept_del(af_global->ldp_session_socket); | |
740 | close(af_global->ldp_session_socket); | |
741 | af_global->ldp_session_socket = -1; | |
742 | } | |
743 | } | |
744 | ||
45a8eba9 RW |
745 | int |
746 | ldpe_acl_check(char *acl_name, int af, union ldpd_addr *addr, uint8_t prefixlen) | |
747 | { | |
748 | return ldp_acl_request(iev_main_sync, acl_name, af, addr, prefixlen); | |
749 | } | |
750 | ||
8429abe0 RW |
751 | void |
752 | ldpe_reset_nbrs(int af) | |
753 | { | |
754 | struct nbr *nbr; | |
755 | ||
756 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
45a8eba9 | 757 | if (af == AF_UNSPEC || nbr->af == af) |
8429abe0 RW |
758 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); |
759 | } | |
760 | } | |
761 | ||
762 | void | |
763 | ldpe_reset_ds_nbrs(void) | |
764 | { | |
765 | struct nbr *nbr; | |
766 | ||
767 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
768 | if (nbr->ds_tlv) | |
769 | session_shutdown(nbr, S_SHUTDOWN, 0, 0); | |
770 | } | |
771 | } | |
772 | ||
773 | void | |
774 | ldpe_remove_dynamic_tnbrs(int af) | |
775 | { | |
776 | struct tnbr *tnbr, *safe; | |
777 | ||
7989cdba | 778 | RB_FOREACH_SAFE(tnbr, tnbr_head, &leconf->tnbr_tree, safe) { |
8429abe0 RW |
779 | if (tnbr->af != af) |
780 | continue; | |
781 | ||
782 | tnbr->flags &= ~F_TNBR_DYNAMIC; | |
7989cdba | 783 | tnbr_check(leconf, tnbr); |
8429abe0 RW |
784 | } |
785 | } | |
786 | ||
787 | void | |
788 | ldpe_stop_init_backoff(int af) | |
789 | { | |
790 | struct nbr *nbr; | |
791 | ||
792 | RB_FOREACH(nbr, nbr_id_head, &nbrs_by_id) { | |
793 | if (nbr->af == af && nbr_pending_idtimer(nbr)) { | |
794 | nbr_stop_idtimer(nbr); | |
795 | nbr_establish_connection(nbr); | |
796 | } | |
797 | } | |
798 | } | |
799 | ||
800 | static void | |
801 | ldpe_iface_af_ctl(struct ctl_conn *c, int af, unsigned int idx) | |
802 | { | |
803 | struct iface *iface; | |
804 | struct iface_af *ia; | |
805 | struct ctl_iface *ictl; | |
806 | ||
7d3d7491 | 807 | RB_FOREACH(iface, iface_head, &leconf->iface_tree) { |
8429abe0 RW |
808 | if (idx == 0 || idx == iface->ifindex) { |
809 | ia = iface_af_get(iface, af); | |
810 | if (!ia->enabled) | |
811 | continue; | |
812 | ||
813 | ictl = if_to_ctl(ia); | |
05aac414 | 814 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_INTERFACE, |
8429abe0 RW |
815 | 0, 0, -1, ictl, sizeof(struct ctl_iface)); |
816 | } | |
817 | } | |
818 | } | |
819 | ||
820 | void | |
821 | ldpe_iface_ctl(struct ctl_conn *c, unsigned int idx) | |
822 | { | |
823 | ldpe_iface_af_ctl(c, AF_INET, idx); | |
824 | ldpe_iface_af_ctl(c, AF_INET6, idx); | |
825 | } | |
826 | ||
827 | void | |
828 | ldpe_adj_ctl(struct ctl_conn *c) | |
bc0eb287 RW |
829 | { |
830 | struct adj *adj; | |
831 | struct ctl_adj *actl; | |
832 | ||
833 | RB_FOREACH(adj, global_adj_head, &global.adj_tree) { | |
834 | actl = adj_to_ctl(adj); | |
835 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISCOVERY, 0, 0, | |
836 | -1, actl, sizeof(struct ctl_adj)); | |
837 | } | |
838 | ||
839 | imsg_compose_event(&c->iev, IMSG_CTL_END, 0, 0, -1, NULL, 0); | |
840 | } | |
841 | ||
842 | void | |
843 | ldpe_adj_detail_ctl(struct ctl_conn *c) | |
8429abe0 | 844 | { |
eac6e3f0 RW |
845 | struct iface *iface; |
846 | struct tnbr *tnbr; | |
847 | struct adj *adj; | |
848 | struct ctl_adj *actl; | |
849 | struct ctl_disc_if ictl; | |
850 | struct ctl_disc_tnbr tctl; | |
8429abe0 | 851 | |
eac6e3f0 RW |
852 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISCOVERY, 0, 0, -1, NULL, 0); |
853 | ||
7d3d7491 | 854 | RB_FOREACH(iface, iface_head, &leconf->iface_tree) { |
eac6e3f0 RW |
855 | memset(&ictl, 0, sizeof(ictl)); |
856 | ictl.active_v4 = (iface->ipv4.state == IF_STA_ACTIVE); | |
857 | ictl.active_v6 = (iface->ipv6.state == IF_STA_ACTIVE); | |
858 | ||
859 | if (!ictl.active_v4 && !ictl.active_v6) | |
860 | continue; | |
861 | ||
862 | strlcpy(ictl.name, iface->name, sizeof(ictl.name)); | |
057d48bd RW |
863 | if (RB_EMPTY(&iface->ipv4.adj_tree) && |
864 | RB_EMPTY(&iface->ipv6.adj_tree)) | |
eac6e3f0 RW |
865 | ictl.no_adj = 1; |
866 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_IFACE, 0, 0, | |
867 | -1, &ictl, sizeof(ictl)); | |
868 | ||
057d48bd | 869 | RB_FOREACH(adj, ia_adj_head, &iface->ipv4.adj_tree) { |
8429abe0 | 870 | actl = adj_to_ctl(adj); |
eac6e3f0 RW |
871 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_ADJ, |
872 | 0, 0, -1, actl, sizeof(struct ctl_adj)); | |
873 | } | |
057d48bd | 874 | RB_FOREACH(adj, ia_adj_head, &iface->ipv6.adj_tree) { |
eac6e3f0 RW |
875 | actl = adj_to_ctl(adj); |
876 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_ADJ, | |
8429abe0 RW |
877 | 0, 0, -1, actl, sizeof(struct ctl_adj)); |
878 | } | |
879 | } | |
eac6e3f0 | 880 | |
7989cdba | 881 | RB_FOREACH(tnbr, tnbr_head, &leconf->tnbr_tree) { |
eac6e3f0 RW |
882 | memset(&tctl, 0, sizeof(tctl)); |
883 | tctl.af = tnbr->af; | |
884 | tctl.addr = tnbr->addr; | |
885 | if (tnbr->adj == NULL) | |
886 | tctl.no_adj = 1; | |
887 | ||
888 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_TNBR, 0, 0, | |
889 | -1, &tctl, sizeof(tctl)); | |
890 | ||
891 | if (tnbr->adj == NULL) | |
8429abe0 RW |
892 | continue; |
893 | ||
eac6e3f0 RW |
894 | actl = adj_to_ctl(tnbr->adj); |
895 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_DISC_ADJ, 0, 0, | |
8429abe0 RW |
896 | -1, actl, sizeof(struct ctl_adj)); |
897 | } | |
898 | ||
899 | imsg_compose_event(&c->iev, IMSG_CTL_END, 0, 0, -1, NULL, 0); | |
900 | } | |
901 | ||
902 | void | |
903 | ldpe_nbr_ctl(struct ctl_conn *c) | |
904 | { | |
eac6e3f0 RW |
905 | struct adj *adj; |
906 | struct ctl_adj *actl; | |
8429abe0 RW |
907 | struct nbr *nbr; |
908 | struct ctl_nbr *nctl; | |
909 | ||
910 | RB_FOREACH(nbr, nbr_addr_head, &nbrs_by_addr) { | |
eac6e3f0 RW |
911 | if (nbr->state == NBR_STA_PRESENT) |
912 | continue; | |
913 | ||
8429abe0 RW |
914 | nctl = nbr_to_ctl(nbr); |
915 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_NBR, 0, 0, -1, nctl, | |
916 | sizeof(struct ctl_nbr)); | |
eac6e3f0 | 917 | |
057d48bd | 918 | RB_FOREACH(adj, nbr_adj_head, &nbr->adj_tree) { |
eac6e3f0 RW |
919 | actl = adj_to_ctl(adj); |
920 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_NBR_DISC, | |
921 | 0, 0, -1, actl, sizeof(struct ctl_adj)); | |
922 | } | |
923 | ||
924 | imsg_compose_event(&c->iev, IMSG_CTL_SHOW_NBR_END, 0, 0, -1, | |
925 | NULL, 0); | |
8429abe0 RW |
926 | } |
927 | imsg_compose_event(&c->iev, IMSG_CTL_END, 0, 0, -1, NULL, 0); | |
928 | } | |
929 | ||
930 | void | |
931 | mapping_list_add(struct mapping_head *mh, struct map *map) | |
932 | { | |
933 | struct mapping_entry *me; | |
934 | ||
935 | me = calloc(1, sizeof(*me)); | |
936 | if (me == NULL) | |
937 | fatal(__func__); | |
938 | me->map = *map; | |
939 | ||
940 | TAILQ_INSERT_TAIL(mh, me, entry); | |
941 | } | |
942 | ||
943 | void | |
944 | mapping_list_clr(struct mapping_head *mh) | |
945 | { | |
946 | struct mapping_entry *me; | |
947 | ||
948 | while ((me = TAILQ_FIRST(mh)) != NULL) { | |
949 | TAILQ_REMOVE(mh, me, entry); | |
950 | free(me); | |
951 | } | |
952 | } |