GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/ospf6d/ospf6d.c Lines: 0 355 0.0 %
Date: 2017-11-13 Branches: 0 267 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: ospf6d.c,v 1.35 2017/11/05 16:56:02 jca Exp $ */
2
3
/*
4
 * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org>
5
 * Copyright (c) 2004, 2007 Esben Norby <norby@openbsd.org>
6
 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
7
 *
8
 * Permission to use, copy, modify, and distribute this software for any
9
 * purpose with or without fee is hereby granted, provided that the above
10
 * copyright notice and this permission notice appear in all copies.
11
 *
12
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
 */
20
21
#include <sys/types.h>
22
#include <sys/socket.h>
23
#include <sys/queue.h>
24
#include <sys/time.h>
25
#include <sys/stat.h>
26
#include <sys/wait.h>
27
#include <sys/sysctl.h>
28
#include <syslog.h>
29
30
#include <netinet/in.h>
31
#include <arpa/inet.h>
32
33
#include <event.h>
34
#include <err.h>
35
#include <errno.h>
36
#include <pwd.h>
37
#include <stdio.h>
38
#include <stdlib.h>
39
#include <string.h>
40
#include <signal.h>
41
#include <unistd.h>
42
43
#include "ospf6d.h"
44
#include "ospf6.h"
45
#include "ospfe.h"
46
#include "control.h"
47
#include "log.h"
48
#include "rde.h"
49
50
void		main_sig_handler(int, short, void *);
51
__dead void	usage(void);
52
__dead void	ospfd_shutdown(void);
53
54
void	main_dispatch_ospfe(int, short, void *);
55
void	main_dispatch_rde(int, short, void *);
56
57
int	ospf_reload(void);
58
int	ospf_sendboth(enum imsg_type, void *, u_int16_t);
59
int	merge_interfaces(struct area *, struct area *);
60
struct iface *iface_lookup(struct area *, struct iface *);
61
62
int	pipe_parent2ospfe[2];
63
int	pipe_parent2rde[2];
64
int	pipe_ospfe2rde[2];
65
66
struct ospfd_conf	*ospfd_conf = NULL;
67
struct imsgev		*iev_ospfe;
68
struct imsgev		*iev_rde;
69
char			*conffile;
70
71
pid_t			 ospfe_pid = 0;
72
pid_t			 rde_pid = 0;
73
74
/* ARGSUSED */
75
void
76
main_sig_handler(int sig, short event, void *arg)
77
{
78
	/* signal handler rules don't apply, libevent decouples for us */
79
	switch (sig) {
80
	case SIGTERM:
81
	case SIGINT:
82
		ospfd_shutdown();
83
		/* NOTREACHED */
84
	case SIGHUP:
85
		if (ospf_reload() == -1)
86
			log_warnx("configuration reload failed");
87
		else
88
			log_debug("configuration reloaded");
89
		break;
90
	default:
91
		fatalx("unexpected signal");
92
		/* NOTREACHED */
93
	}
94
}
95
96
__dead void
97
usage(void)
98
{
99
	extern char *__progname;
100
101
	fprintf(stderr, "usage: %s [-dnv] [-D macro=value]"
102
	    " [-f file] [-s socket]\n",
103
	    __progname);
104
	exit(1);
105
}
106
107
int
108
main(int argc, char *argv[])
109
{
110
	struct event		 ev_sigint, ev_sigterm, ev_sighup;
111
	int			 ch, opts = 0;
112
	int			 debug = 0;
113
	int			 ipforwarding;
114
	int			 mib[4];
115
	size_t			 len;
116
	char			*sockname;
117
118
	conffile = CONF_FILE;
119
	ospfd_process = PROC_MAIN;
120
	sockname = OSPF6D_SOCKET;
121
122
	log_init(1, LOG_DAEMON);	/* log to stderr until daemonized */
123
	log_procinit(log_procnames[ospfd_process]);
124
	log_setverbose(1);
125
126
	while ((ch = getopt(argc, argv, "cdD:f:s:nv")) != -1) {
127
		switch (ch) {
128
		case 'c':
129
			opts |= OSPFD_OPT_FORCE_DEMOTE;
130
			break;
131
		case 'd':
132
			debug = 1;
133
			break;
134
		case 'D':
135
			if (cmdline_symset(optarg) < 0)
136
				log_warnx("could not parse macro definition %s",
137
				    optarg);
138
			break;
139
		case 'f':
140
			conffile = optarg;
141
			break;
142
		case 'n':
143
			opts |= OSPFD_OPT_NOACTION;
144
			break;
145
		case 's':
146
			sockname = optarg;
147
			break;
148
		case 'v':
149
			if (opts & OSPFD_OPT_VERBOSE)
150
				opts |= OSPFD_OPT_VERBOSE2;
151
			opts |= OSPFD_OPT_VERBOSE;
152
			log_setverbose(1);
153
			break;
154
		default:
155
			usage();
156
			/* NOTREACHED */
157
		}
158
	}
159
160
	argc -= optind;
161
	argv += optind;
162
	if (argc > 0)
163
		usage();
164
165
	mib[0] = CTL_NET;
166
	mib[1] = PF_INET6;
167
	mib[2] = IPPROTO_IPV6;
168
	mib[3] = IPCTL_FORWARDING;
169
	len = sizeof(ipforwarding);
170
	if (sysctl(mib, 4, &ipforwarding, &len, NULL, 0) == -1)
171
		err(1, "sysctl");
172
173
	if (ipforwarding != 1) {
174
		log_warnx("WARNING: IPv6 forwarding NOT enabled, "
175
		    "running as stub router");
176
		opts |= OSPFD_OPT_STUB_ROUTER;
177
	}
178
179
	/* prepare and fetch interfaces early */
180
	if_init();
181
182
	/* parse config file */
183
	if ((ospfd_conf = parse_config(conffile, opts)) == NULL )
184
		exit(1);
185
	ospfd_conf->csock = sockname;
186
187
	if (ospfd_conf->opts & OSPFD_OPT_NOACTION) {
188
		if (ospfd_conf->opts & OSPFD_OPT_VERBOSE)
189
			print_config(ospfd_conf);
190
		else
191
			fprintf(stderr, "configuration OK\n");
192
		exit(0);
193
	}
194
195
	/* check for root privileges  */
196
	if (geteuid())
197
		errx(1, "need root privileges");
198
199
	/* check for ospfd user */
200
	if (getpwnam(OSPF6D_USER) == NULL)
201
		errx(1, "unknown user %s", OSPF6D_USER);
202
203
	log_init(debug, LOG_DAEMON);
204
	log_setverbose(ospfd_conf->opts & OSPFD_OPT_VERBOSE);
205
206
	if (!debug)
207
		daemon(1, 0);
208
209
	log_info("startup");
210
211
	if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
212
	    PF_UNSPEC, pipe_parent2ospfe) == -1)
213
		fatal("socketpair");
214
	if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
215
	    PF_UNSPEC, pipe_parent2rde) == -1)
216
		fatal("socketpair");
217
	if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
218
	    PF_UNSPEC, pipe_ospfe2rde) == -1)
219
		fatal("socketpair");
220
221
	/* start children */
222
	rde_pid = rde(ospfd_conf, pipe_parent2rde, pipe_ospfe2rde,
223
	    pipe_parent2ospfe);
224
	ospfe_pid = ospfe(ospfd_conf, pipe_parent2ospfe, pipe_ospfe2rde,
225
	    pipe_parent2rde);
226
227
	event_init();
228
229
	/* setup signal handler */
230
	signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL);
231
	signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL);
232
	signal_set(&ev_sighup, SIGHUP, main_sig_handler, NULL);
233
	signal_add(&ev_sigint, NULL);
234
	signal_add(&ev_sigterm, NULL);
235
	signal_add(&ev_sighup, NULL);
236
	signal(SIGPIPE, SIG_IGN);
237
238
	/* setup pipes to children */
239
	close(pipe_parent2ospfe[1]);
240
	close(pipe_parent2rde[1]);
241
	close(pipe_ospfe2rde[0]);
242
	close(pipe_ospfe2rde[1]);
243
244
	if ((iev_ospfe = malloc(sizeof(struct imsgev))) == NULL ||
245
	    (iev_rde = malloc(sizeof(struct imsgev))) == NULL)
246
		fatal(NULL);
247
	imsg_init(&iev_ospfe->ibuf, pipe_parent2ospfe[0]);
248
	iev_ospfe->handler = main_dispatch_ospfe;
249
	imsg_init(&iev_rde->ibuf, pipe_parent2rde[0]);
250
	iev_rde->handler = main_dispatch_rde;
251
252
	/* setup event handler */
253
	iev_ospfe->events = EV_READ;
254
	event_set(&iev_ospfe->ev, iev_ospfe->ibuf.fd, iev_ospfe->events,
255
	    iev_ospfe->handler, iev_ospfe);
256
	event_add(&iev_ospfe->ev, NULL);
257
258
	iev_rde->events = EV_READ;
259
	event_set(&iev_rde->ev, iev_rde->ibuf.fd, iev_rde->events,
260
	    iev_rde->handler, iev_rde);
261
	event_add(&iev_rde->ev, NULL);
262
263
	if (kr_init(!(ospfd_conf->flags & OSPFD_FLAG_NO_FIB_UPDATE)) == -1)
264
		fatalx("kr_init failed");
265
266
	event_dispatch();
267
268
	ospfd_shutdown();
269
	/* NOTREACHED */
270
	return (0);
271
}
272
273
__dead void
274
ospfd_shutdown(void)
275
{
276
	pid_t	pid;
277
	int	status;
278
279
	/* close pipes */
280
	msgbuf_clear(&iev_ospfe->ibuf.w);
281
	close(iev_ospfe->ibuf.fd);
282
	msgbuf_clear(&iev_rde->ibuf.w);
283
	close(iev_rde->ibuf.fd);
284
285
	control_cleanup(ospfd_conf->csock);
286
	kr_shutdown();
287
	carp_demote_shutdown();
288
289
	log_debug("waiting for children to terminate");
290
	do {
291
		pid = wait(&status);
292
		if (pid == -1) {
293
			if (errno != EINTR && errno != ECHILD)
294
				fatal("wait");
295
		} else if (WIFSIGNALED(status))
296
			log_warnx("%s terminated; signal %d",
297
			    (pid == rde_pid) ? "route decision engine" :
298
			    "ospf engine", WTERMSIG(status));
299
	} while (pid != -1 || (pid == -1 && errno == EINTR));
300
301
	free(iev_ospfe);
302
	free(iev_rde);
303
	free(ospfd_conf);
304
305
	log_info("terminating");
306
	exit(0);
307
}
308
309
/* imsg handling */
310
/* ARGSUSED */
311
void
312
main_dispatch_ospfe(int fd, short event, void *bula)
313
{
314
	struct imsgev		*iev = bula;
315
	struct imsgbuf		*ibuf = &iev->ibuf;
316
	struct imsg		 imsg;
317
	struct demote_msg	 dmsg;
318
	ssize_t			 n;
319
	int			 shut = 0, verbose;
320
321
	if (event & EV_READ) {
322
		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
323
			fatal("imsg_read error");
324
		if (n == 0)	/* connection closed */
325
			shut = 1;
326
	}
327
	if (event & EV_WRITE) {
328
		if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
329
			fatal("msgbuf_write");
330
		if (n == 0)	/* connection closed */
331
			shut = 1;
332
	}
333
334
	for (;;) {
335
		if ((n = imsg_get(ibuf, &imsg)) == -1)
336
			fatal("imsg_get");
337
338
		if (n == 0)
339
			break;
340
341
		switch (imsg.hdr.type) {
342
		case IMSG_CTL_RELOAD:
343
			if (ospf_reload() == -1)
344
				log_warnx("configuration reload failed");
345
			else
346
				log_debug("configuration reloaded");
347
			break;
348
		case IMSG_CTL_FIB_COUPLE:
349
			kr_fib_couple();
350
			break;
351
		case IMSG_CTL_FIB_DECOUPLE:
352
			kr_fib_decouple();
353
			break;
354
		case IMSG_CTL_KROUTE:
355
		case IMSG_CTL_KROUTE_ADDR:
356
			kr_show_route(&imsg);
357
			break;
358
		case IMSG_DEMOTE:
359
			if (imsg.hdr.len - IMSG_HEADER_SIZE != sizeof(dmsg))
360
				fatalx("invalid size of OE request");
361
			memcpy(&dmsg, imsg.data, sizeof(dmsg));
362
			carp_demote_set(dmsg.demote_group, dmsg.level);
363
			break;
364
		case IMSG_CTL_LOG_VERBOSE:
365
			/* already checked by ospfe */
366
			memcpy(&verbose, imsg.data, sizeof(verbose));
367
			log_setverbose(verbose);
368
			break;
369
		default:
370
			log_debug("main_dispatch_ospfe: error handling imsg %d",
371
			    imsg.hdr.type);
372
			break;
373
		}
374
		imsg_free(&imsg);
375
	}
376
	if (!shut)
377
		imsg_event_add(iev);
378
	else {
379
		/* this pipe is dead, so remove the event handler */
380
		event_del(&iev->ev);
381
		event_loopexit(NULL);
382
	}
383
}
384
385
/* ARGSUSED */
386
void
387
main_dispatch_rde(int fd, short event, void *bula)
388
{
389
	struct imsgev	*iev = bula;
390
	struct imsgbuf	*ibuf = &iev->ibuf;
391
	struct imsg	 imsg;
392
	ssize_t		 n;
393
	int		 count, shut = 0;
394
395
	if (event & EV_READ) {
396
		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
397
			fatal("imsg_read error");
398
		if (n == 0)	/* connection closed */
399
			shut = 1;
400
	}
401
	if (event & EV_WRITE) {
402
		if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
403
			fatal("msgbuf_write");
404
		if (n == 0)	/* connection closed */
405
			shut = 1;
406
	}
407
408
	for (;;) {
409
		if ((n = imsg_get(ibuf, &imsg)) == -1)
410
			fatal("imsg_get");
411
412
		if (n == 0)
413
			break;
414
415
		switch (imsg.hdr.type) {
416
		case IMSG_KROUTE_CHANGE:
417
			count = (imsg.hdr.len - IMSG_HEADER_SIZE) /
418
			    sizeof(struct kroute);
419
			if (kr_change(imsg.data, count))
420
				log_warn("main_dispatch_rde: error changing "
421
				    "route");
422
			break;
423
		case IMSG_KROUTE_DELETE:
424
			if (kr_delete(imsg.data))
425
				log_warn("main_dispatch_rde: error deleting "
426
				    "route");
427
			break;
428
		default:
429
			log_debug("main_dispatch_rde: error handling imsg %d",
430
			    imsg.hdr.type);
431
			break;
432
		}
433
		imsg_free(&imsg);
434
	}
435
	if (!shut)
436
		imsg_event_add(iev);
437
	else {
438
		/* this pipe is dead, so remove the event handler */
439
		event_del(&iev->ev);
440
		event_loopexit(NULL);
441
	}
442
}
443
444
void
445
main_imsg_compose_ospfe(int type, pid_t pid, void *data, u_int16_t datalen)
446
{
447
	if (iev_ospfe == NULL)
448
		return;
449
	imsg_compose_event(iev_ospfe, type, 0, pid, -1, data, datalen);
450
}
451
452
void
453
main_imsg_compose_rde(int type, pid_t pid, void *data, u_int16_t datalen)
454
{
455
	if (iev_rde == NULL)
456
		return;
457
	imsg_compose_event(iev_rde, type, 0, pid, -1, data, datalen);
458
}
459
460
void
461
imsg_event_add(struct imsgev *iev)
462
{
463
	iev->events = EV_READ;
464
	if (iev->ibuf.w.queued)
465
		iev->events |= EV_WRITE;
466
467
	event_del(&iev->ev);
468
	event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev);
469
	event_add(&iev->ev, NULL);
470
}
471
472
int
473
imsg_compose_event(struct imsgev *iev, u_int16_t type, u_int32_t peerid,
474
    pid_t pid, int fd, void *data, u_int16_t datalen)
475
{
476
	int	ret;
477
478
	if ((ret = imsg_compose(&iev->ibuf, type, peerid,
479
	    pid, fd, data, datalen)) != -1)
480
		imsg_event_add(iev);
481
	return (ret);
482
}
483
484
int
485
ospf_redistribute(struct kroute *kr, u_int32_t *metric)
486
{
487
	struct redistribute	*r;
488
	struct in6_addr		 ina, inb;
489
	u_int8_t		 is_default = 0;
490
491
	/* only allow ::/0 via REDIST_DEFAULT */
492
	if (IN6_IS_ADDR_UNSPECIFIED(&kr->prefix) && kr->prefixlen == 0)
493
		is_default = 1;
494
495
	SIMPLEQ_FOREACH(r, &ospfd_conf->redist_list, entry) {
496
		switch (r->type & ~REDIST_NO) {
497
		case REDIST_LABEL:
498
			if (kr->rtlabel == r->label) {
499
				*metric = r->metric;
500
				return (r->type & REDIST_NO ? 0 : 1);
501
			}
502
			break;
503
		case REDIST_STATIC:
504
			/*
505
			 * Dynamic routes are not redistributable. Placed here
506
			 * so that link local addresses can be redistributed
507
			 * via a rtlabel.
508
			 */
509
			if (is_default)
510
				continue;
511
			if (kr->flags & F_DYNAMIC)
512
				continue;
513
			if (kr->flags & F_STATIC) {
514
				*metric = r->metric;
515
				return (r->type & REDIST_NO ? 0 : 1);
516
			}
517
			break;
518
		case REDIST_CONNECTED:
519
			if (is_default)
520
				continue;
521
			if (kr->flags & F_DYNAMIC)
522
				continue;
523
			if (kr->flags & F_CONNECTED) {
524
				*metric = r->metric;
525
				return (r->type & REDIST_NO ? 0 : 1);
526
			}
527
			break;
528
		case REDIST_ADDR:
529
			if (kr->flags & F_DYNAMIC)
530
				continue;
531
532
			if (IN6_IS_ADDR_UNSPECIFIED(&r->addr) &&
533
			    r->prefixlen == 0) {
534
				if (is_default) {
535
					*metric = r->metric;
536
					return (r->type & REDIST_NO ? 0 : 1);
537
				} else
538
					return (0);
539
			}
540
541
			inet6applymask(&ina, &kr->prefix, r->prefixlen);
542
			inet6applymask(&inb, &r->addr, r->prefixlen);
543
			if (IN6_ARE_ADDR_EQUAL(&ina, &inb) &&
544
			    kr->prefixlen >= r->prefixlen) {
545
				*metric = r->metric;
546
				return (r->type & REDIST_NO ? 0 : 1);
547
			}
548
			break;
549
		case REDIST_DEFAULT:
550
			if (is_default) {
551
				*metric = r->metric;
552
				return (r->type & REDIST_NO ? 0 : 1);
553
			}
554
			break;
555
		}
556
	}
557
558
	return (0);
559
}
560
561
int
562
ospf_reload(void)
563
{
564
#ifdef notyet
565
	struct area		*area;
566
	struct ospfd_conf	*xconf;
567
568
	if ((xconf = parse_config(conffile, ospfd_conf->opts)) == NULL)
569
		return (-1);
570
571
	/* send config to childs */
572
	if (ospf_sendboth(IMSG_RECONF_CONF, xconf, sizeof(*xconf)) == -1)
573
		return (-1);
574
575
	/* send areas, interfaces happen out of band */
576
	LIST_FOREACH(area, &xconf->area_list, entry) {
577
		if (ospf_sendboth(IMSG_RECONF_AREA, area, sizeof(*area)) == -1)
578
			return (-1);
579
	}
580
581
	if (ospf_sendboth(IMSG_RECONF_END, NULL, 0) == -1)
582
		return (-1);
583
584
	/* XXX send newly available interfaces to the childs */
585
586
	merge_config(ospfd_conf, xconf);
587
	/* update redistribute lists */
588
	kr_reload();
589
	return (0);
590
#else
591
	return (-1);
592
#endif
593
}
594
595
int
596
ospf_sendboth(enum imsg_type type, void *buf, u_int16_t len)
597
{
598
	if (imsg_compose_event(iev_ospfe, type, 0, 0, -1, buf, len) == -1)
599
		return (-1);
600
	if (imsg_compose_event(iev_rde, type, 0, 0, -1, buf, len) == -1)
601
		return (-1);
602
	return (0);
603
}
604
605
void
606
merge_config(struct ospfd_conf *conf, struct ospfd_conf *xconf)
607
{
608
	struct area		*a, *xa, *na;
609
	struct iface		*iface;
610
	struct redistribute	*r;
611
612
	/* change of rtr_id needs a restart */
613
	conf->flags = xconf->flags;
614
	conf->spf_delay = xconf->spf_delay;
615
	conf->spf_hold_time = xconf->spf_hold_time;
616
	conf->redistribute = xconf->redistribute;
617
618
	if (ospfd_process == PROC_MAIN) {
619
		/* main process does neither use areas nor interfaces */
620
		while ((r = SIMPLEQ_FIRST(&conf->redist_list)) != NULL) {
621
			SIMPLEQ_REMOVE_HEAD(&conf->redist_list, entry);
622
			free(r);
623
		}
624
		while ((r = SIMPLEQ_FIRST(&xconf->redist_list)) != NULL) {
625
			SIMPLEQ_REMOVE_HEAD(&xconf->redist_list, entry);
626
			SIMPLEQ_INSERT_TAIL(&conf->redist_list, r, entry);
627
		}
628
		goto done;
629
	}
630
631
	/* merge areas and interfaces */
632
	for (a = LIST_FIRST(&conf->area_list); a != NULL; a = na) {
633
		na = LIST_NEXT(a, entry);
634
		/* find deleted areas */
635
		if ((xa = area_find(xconf, a->id)) == NULL) {
636
			if (ospfd_process == PROC_OSPF_ENGINE) {
637
				LIST_FOREACH(iface, &a->iface_list, entry)
638
					if_fsm(iface, IF_EVT_DOWN);
639
			}
640
			LIST_REMOVE(a, entry);
641
			area_del(a);
642
		}
643
	}
644
645
	for (xa = LIST_FIRST(&xconf->area_list); xa != NULL; xa = na) {
646
		na = LIST_NEXT(xa, entry);
647
		if ((a = area_find(conf, xa->id)) == NULL) {
648
			LIST_REMOVE(xa, entry);
649
			LIST_INSERT_HEAD(&conf->area_list, xa, entry);
650
			if (ospfd_process == PROC_OSPF_ENGINE) {
651
				/* start interfaces */
652
				ospfe_demote_area(xa, 0);
653
				LIST_FOREACH(iface, &xa->iface_list, entry)
654
					if_start(conf, iface);
655
			}
656
			/* no need to merge interfaces */
657
			continue;
658
		}
659
		/*
660
		 * stub is not yet used but switching between stub and normal
661
		 * will be another painful job.
662
		 */
663
		a->stub = xa->stub;
664
		a->stub_default_cost = xa->stub_default_cost;
665
		if (ospfd_process == PROC_RDE_ENGINE)
666
			a->dirty = 1; /* force SPF tree recalculation */
667
668
		/* merge interfaces */
669
		if (merge_interfaces(a, xa) &&
670
		    ospfd_process == PROC_OSPF_ENGINE)
671
			a->dirty = 1; /* force rtr LSA update */
672
	}
673
674
	if (ospfd_process == PROC_OSPF_ENGINE) {
675
		LIST_FOREACH(a, &conf->area_list, entry) {
676
			LIST_FOREACH(iface, &a->iface_list, entry) {
677
				if (iface->state == IF_STA_NEW) {
678
					iface->state = IF_STA_DOWN;
679
					if_start(conf, iface);
680
				}
681
			}
682
			if (a->dirty) {
683
				a->dirty = 0;
684
				orig_rtr_lsa(LIST_FIRST(&a->iface_list));
685
			}
686
		}
687
	}
688
689
done:
690
	while ((a = LIST_FIRST(&xconf->area_list)) != NULL) {
691
		LIST_REMOVE(a, entry);
692
		area_del(a);
693
	}
694
	free(xconf);
695
}
696
697
int
698
merge_interfaces(struct area *a, struct area *xa)
699
{
700
	struct iface	*i, *xi, *ni;
701
	int		 dirty = 0;
702
703
	/* problems:
704
	 * - new interfaces (easy)
705
	 * - deleted interfaces (needs to be done via fsm?)
706
	 * - changing passive (painful?)
707
	 */
708
	for (i = LIST_FIRST(&a->iface_list); i != NULL; i = ni) {
709
		ni = LIST_NEXT(i, entry);
710
		if (iface_lookup(xa, i) == NULL) {
711
			log_debug("merge_interfaces: proc %d area %s removing "
712
			    "interface %s", ospfd_process, inet_ntoa(a->id),
713
			    i->name);
714
			if (ospfd_process == PROC_OSPF_ENGINE)
715
				if_fsm(i, IF_EVT_DOWN);
716
			LIST_REMOVE(i, entry);
717
			if_del(i);
718
		}
719
	}
720
721
	for (xi = LIST_FIRST(&xa->iface_list); xi != NULL; xi = ni) {
722
		ni = LIST_NEXT(xi, entry);
723
		if ((i = iface_lookup(a, xi)) == NULL) {
724
			/* new interface but delay initialisation */
725
			log_debug("merge_interfaces: proc %d area %s adding "
726
			    "interface %s", ospfd_process, inet_ntoa(a->id),
727
			    xi->name);
728
			LIST_REMOVE(xi, entry);
729
			LIST_INSERT_HEAD(&a->iface_list, xi, entry);
730
			if (ospfd_process == PROC_OSPF_ENGINE)
731
				xi->state = IF_STA_NEW;
732
			continue;
733
		}
734
		log_debug("merge_interfaces: proc %d area %s merging "
735
		    "interface %s", ospfd_process, inet_ntoa(a->id), i->name);
736
		i->addr = xi->addr;
737
		i->dst = xi->dst;
738
		i->abr_id = xi->abr_id;
739
		i->baudrate = xi->baudrate;
740
		i->dead_interval = xi->dead_interval;
741
		i->mtu = xi->mtu;
742
		i->transmit_delay = xi->transmit_delay;
743
		i->hello_interval = xi->hello_interval;
744
		i->rxmt_interval = xi->rxmt_interval;
745
		if (i->metric != xi->metric)
746
			dirty = 1;
747
		i->metric = xi->metric;
748
		i->priority = xi->priority;
749
		i->flags = xi->flags; /* needed? */
750
		i->type = xi->type; /* needed? */
751
		i->if_type = xi->if_type; /* needed? */
752
		i->linkstate = xi->linkstate; /* needed? */
753
754
#if 0 /* XXX needs some kind of love */
755
		if (i->passive != xi->passive) {
756
			/* need to restart interface to cope with this change */
757
			if (ospfd_process == PROC_OSPF_ENGINE)
758
				if_fsm(i, IF_EVT_DOWN);
759
			i->passive = xi->passive;
760
			if (ospfd_process == PROC_OSPF_ENGINE)
761
				if_fsm(i, IF_EVT_UP);
762
		}
763
#endif
764
	}
765
	return (dirty);
766
}
767
768
struct iface *
769
iface_lookup(struct area *area, struct iface *iface)
770
{
771
	struct iface	*i;
772
773
	LIST_FOREACH(i, &area->iface_list, entry)
774
		if (i->ifindex == iface->ifindex)
775
			return (i);
776
	return (NULL);
777
}