GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/eigrpd/eigrpd.c Lines: 0 344 0.0 %
Date: 2017-11-13 Branches: 0 241 0.0 %

Line Branch Exec Source
1
/*	$OpenBSD: eigrpd.c,v 1.21 2016/09/02 17:59:58 benno Exp $ */
2
3
/*
4
 * Copyright (c) 2015 Renato Westphal <renato@openbsd.org>
5
 * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org>
6
 * Copyright (c) 2004 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
22
#include <sys/types.h>
23
#include <sys/wait.h>
24
#include <sys/sysctl.h>
25
26
#include <err.h>
27
#include <errno.h>
28
#include <pwd.h>
29
#include <signal.h>
30
#include <stdio.h>
31
#include <stdlib.h>
32
#include <string.h>
33
#include <unistd.h>
34
35
#include "eigrpd.h"
36
#include "eigrpe.h"
37
#include "rde.h"
38
#include "log.h"
39
40
static void		 main_sig_handler(int, short, void *);
41
static __dead void	 usage(void);
42
static __dead void	 eigrpd_shutdown(void);
43
static pid_t		 start_child(enum eigrpd_process, char *, int, int, int,
44
			    char *);
45
static void		 main_dispatch_eigrpe(int, short, void *);
46
static void		 main_dispatch_rde(int, short, void *);
47
static int		 main_imsg_send_ipc_sockets(struct imsgbuf *,
48
			    struct imsgbuf *);
49
static int		 main_imsg_send_config(struct eigrpd_conf *);
50
static int		 eigrp_reload(void);
51
static int		 eigrp_sendboth(enum imsg_type, void *, uint16_t);
52
static void		 merge_instances(struct eigrpd_conf *, struct eigrp *,
53
			    struct eigrp *);
54
55
struct eigrpd_conf	*eigrpd_conf;
56
57
static char		*conffile;
58
static struct imsgev	*iev_eigrpe;
59
static struct imsgev	*iev_rde;
60
static pid_t		 eigrpe_pid;
61
static pid_t		 rde_pid;
62
63
/* ARGSUSED */
64
static void
65
main_sig_handler(int sig, short event, void *arg)
66
{
67
	/* signal handler rules don't apply, libevent decouples for us */
68
	switch (sig) {
69
	case SIGTERM:
70
	case SIGINT:
71
		eigrpd_shutdown();
72
		/* NOTREACHED */
73
	case SIGHUP:
74
		if (eigrp_reload() == -1)
75
			log_warnx("configuration reload failed");
76
		else
77
			log_debug("configuration reloaded");
78
		break;
79
	default:
80
		fatalx("unexpected signal");
81
		/* NOTREACHED */
82
	}
83
}
84
85
static __dead void
86
usage(void)
87
{
88
	extern char *__progname;
89
90
	fprintf(stderr, "usage: %s [-dnv] [-D macro=value]"
91
	    " [-f file] [-s socket]\n",
92
	    __progname);
93
	exit(1);
94
}
95
96
struct eigrpd_global global;
97
98
int
99
main(int argc, char *argv[])
100
{
101
	struct event		 ev_sigint, ev_sigterm, ev_sighup;
102
	char			*saved_argv0;
103
	int			 ch;
104
	int			 debug = 0, rflag = 0, eflag = 0;
105
	int			 ipforwarding;
106
	int			 mib[4];
107
	size_t			 len;
108
	char			*sockname;
109
	int			 pipe_parent2eigrpe[2];
110
	int			 pipe_parent2rde[2];
111
112
	conffile = CONF_FILE;
113
	eigrpd_process = PROC_MAIN;
114
	log_procname = log_procnames[eigrpd_process];
115
	sockname = EIGRPD_SOCKET;
116
117
	log_init(1);	/* log to stderr until daemonized */
118
	log_verbose(1);
119
120
	saved_argv0 = argv[0];
121
	if (saved_argv0 == NULL)
122
		saved_argv0 = "eigrpd";
123
124
	while ((ch = getopt(argc, argv, "dD:f:ns:vRE")) != -1) {
125
		switch (ch) {
126
		case 'd':
127
			debug = 1;
128
			break;
129
		case 'D':
130
			if (cmdline_symset(optarg) < 0)
131
				log_warnx("could not parse macro definition %s",
132
				    optarg);
133
			break;
134
		case 'f':
135
			conffile = optarg;
136
			break;
137
		case 'n':
138
			global.cmd_opts |= EIGRPD_OPT_NOACTION;
139
			break;
140
		case 's':
141
			sockname = optarg;
142
			break;
143
		case 'v':
144
			if (global.cmd_opts & EIGRPD_OPT_VERBOSE)
145
				global.cmd_opts |= EIGRPD_OPT_VERBOSE2;
146
			global.cmd_opts |= EIGRPD_OPT_VERBOSE;
147
			break;
148
		case 'R':
149
			rflag = 1;
150
			break;
151
		case 'E':
152
			eflag = 1;
153
			break;
154
		default:
155
			usage();
156
			/* NOTREACHED */
157
		}
158
	}
159
160
	argc -= optind;
161
	argv += optind;
162
	if (argc > 0 || (rflag && eflag))
163
		usage();
164
165
	if (rflag)
166
		rde(debug, global.cmd_opts & EIGRPD_OPT_VERBOSE);
167
	else if (eflag)
168
		eigrpe(debug, global.cmd_opts & EIGRPD_OPT_VERBOSE, sockname);
169
170
	mib[0] = CTL_NET;
171
	mib[1] = PF_INET;
172
	mib[2] = IPPROTO_IP;
173
	mib[3] = IPCTL_FORWARDING;
174
	len = sizeof(ipforwarding);
175
	if (sysctl(mib, 4, &ipforwarding, &len, NULL, 0) == -1)
176
		log_warn("sysctl");
177
178
	if (ipforwarding != 1)
179
		log_warnx("WARNING: IP forwarding NOT enabled");
180
181
	/* fetch interfaces early */
182
	kif_init();
183
184
	/* parse config file */
185
	if ((eigrpd_conf = parse_config(conffile)) == NULL) {
186
		kif_clear();
187
		exit(1);
188
	}
189
190
	if (global.cmd_opts & EIGRPD_OPT_NOACTION) {
191
		if (global.cmd_opts & EIGRPD_OPT_VERBOSE)
192
			print_config(eigrpd_conf);
193
		else
194
			fprintf(stderr, "configuration OK\n");
195
		kif_clear();
196
		exit(0);
197
	}
198
199
	/* check for root privileges  */
200
	if (geteuid())
201
		errx(1, "need root privileges");
202
203
	/* check for eigrpd user */
204
	if (getpwnam(EIGRPD_USER) == NULL)
205
		errx(1, "unknown user %s", EIGRPD_USER);
206
207
	log_init(debug);
208
	log_verbose(global.cmd_opts & EIGRPD_OPT_VERBOSE);
209
210
	if (!debug)
211
		daemon(1, 0);
212
213
	log_info("startup");
214
215
	if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
216
	    PF_UNSPEC, pipe_parent2eigrpe) == -1)
217
		fatal("socketpair");
218
	if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
219
	    PF_UNSPEC, pipe_parent2rde) == -1)
220
		fatal("socketpair");
221
222
	/* start children */
223
	rde_pid = start_child(PROC_RDE_ENGINE, saved_argv0, pipe_parent2rde[1],
224
	    debug, global.cmd_opts & EIGRPD_OPT_VERBOSE, NULL);
225
	eigrpe_pid = start_child(PROC_EIGRP_ENGINE, saved_argv0,
226
	    pipe_parent2eigrpe[1], debug, global.cmd_opts & EIGRPD_OPT_VERBOSE,
227
	    sockname);
228
229
	event_init();
230
231
	/* setup signal handler */
232
	signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL);
233
	signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL);
234
	signal_set(&ev_sighup, SIGHUP, main_sig_handler, NULL);
235
	signal_add(&ev_sigint, NULL);
236
	signal_add(&ev_sigterm, NULL);
237
	signal_add(&ev_sighup, NULL);
238
	signal(SIGPIPE, SIG_IGN);
239
240
	/* setup pipes to children */
241
	if ((iev_eigrpe = malloc(sizeof(struct imsgev))) == NULL ||
242
	    (iev_rde = malloc(sizeof(struct imsgev))) == NULL)
243
		fatal(NULL);
244
	imsg_init(&iev_eigrpe->ibuf, pipe_parent2eigrpe[0]);
245
	iev_eigrpe->handler = main_dispatch_eigrpe;
246
	imsg_init(&iev_rde->ibuf, pipe_parent2rde[0]);
247
	iev_rde->handler = main_dispatch_rde;
248
249
	/* setup event handler */
250
	iev_eigrpe->events = EV_READ;
251
	event_set(&iev_eigrpe->ev, iev_eigrpe->ibuf.fd, iev_eigrpe->events,
252
	    iev_eigrpe->handler, iev_eigrpe);
253
	event_add(&iev_eigrpe->ev, NULL);
254
255
	iev_rde->events = EV_READ;
256
	event_set(&iev_rde->ev, iev_rde->ibuf.fd, iev_rde->events,
257
	    iev_rde->handler, iev_rde);
258
	event_add(&iev_rde->ev, NULL);
259
260
	if (main_imsg_send_ipc_sockets(&iev_eigrpe->ibuf, &iev_rde->ibuf))
261
		fatal("could not establish imsg links");
262
	main_imsg_send_config(eigrpd_conf);
263
264
	/* notify eigrpe about existing interfaces and addresses */
265
	kif_redistribute();
266
267
	if (kr_init(!(eigrpd_conf->flags & EIGRPD_FLAG_NO_FIB_UPDATE),
268
	    eigrpd_conf->rdomain) == -1)
269
		fatalx("kr_init failed");
270
271
	if (pledge("inet rpath stdio sendfd flock cpath wpath", NULL) == -1)
272
		fatal("pledge");
273
274
	event_dispatch();
275
276
	eigrpd_shutdown();
277
	/* NOTREACHED */
278
	return (0);
279
}
280
281
static __dead void
282
eigrpd_shutdown(void)
283
{
284
	pid_t		 pid;
285
	int		 status;
286
287
	/* close pipes */
288
	msgbuf_clear(&iev_eigrpe->ibuf.w);
289
	close(iev_eigrpe->ibuf.fd);
290
	msgbuf_clear(&iev_rde->ibuf.w);
291
	close(iev_rde->ibuf.fd);
292
293
	kr_shutdown();
294
	config_clear(eigrpd_conf);
295
296
	log_debug("waiting for children to terminate");
297
	do {
298
		pid = wait(&status);
299
		if (pid == -1) {
300
			if (errno != EINTR && errno != ECHILD)
301
				fatal("wait");
302
		} else if (WIFSIGNALED(status))
303
			log_warnx("%s terminated; signal %d",
304
			    (pid == rde_pid) ? "route decision engine" :
305
			    "eigrp engine", WTERMSIG(status));
306
	} while (pid != -1 || (pid == -1 && errno == EINTR));
307
308
	free(iev_eigrpe);
309
	free(iev_rde);
310
311
	log_info("terminating");
312
	exit(0);
313
}
314
315
static pid_t
316
start_child(enum eigrpd_process p, char *argv0, int fd, int debug, int verbose,
317
    char *sockname)
318
{
319
	char	*argv[7];
320
	int	 argc = 0;
321
	pid_t	 pid;
322
323
	switch (pid = fork()) {
324
	case -1:
325
		fatal("cannot fork");
326
	case 0:
327
		break;
328
	default:
329
		close(fd);
330
		return (pid);
331
	}
332
333
	if (dup2(fd, 3) == -1)
334
		fatal("cannot setup imsg fd");
335
336
	argv[argc++] = argv0;
337
	switch (p) {
338
	case PROC_MAIN:
339
		fatalx("Can not start main process");
340
	case PROC_RDE_ENGINE:
341
		argv[argc++] = "-R";
342
		break;
343
	case PROC_EIGRP_ENGINE:
344
		argv[argc++] = "-E";
345
		break;
346
	}
347
	if (debug)
348
		argv[argc++] = "-d";
349
	if (verbose)
350
		argv[argc++] = "-v";
351
	if (sockname) {
352
		argv[argc++] = "-s";
353
		argv[argc++] = sockname;
354
	}
355
	argv[argc++] = NULL;
356
357
	execvp(argv0, argv);
358
	fatal("execvp");
359
}
360
361
/* imsg handling */
362
/* ARGSUSED */
363
static void
364
main_dispatch_eigrpe(int fd, short event, void *bula)
365
{
366
	struct imsgev		*iev = bula;
367
	struct imsgbuf		*ibuf;
368
	struct imsg		 imsg;
369
	ssize_t			 n;
370
	int			 shut = 0, verbose;
371
372
	ibuf = &iev->ibuf;
373
374
	if (event & EV_READ) {
375
		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
376
			fatal("imsg_read error");
377
		if (n == 0)	/* connection closed */
378
			shut = 1;
379
	}
380
	if (event & EV_WRITE) {
381
		if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
382
			fatal("msgbuf_write");
383
		if (n == 0)	/* connection closed */
384
			shut = 1;
385
	}
386
387
	for (;;) {
388
		if ((n = imsg_get(ibuf, &imsg)) == -1)
389
			fatal("imsg_get");
390
391
		if (n == 0)
392
			break;
393
394
		switch (imsg.hdr.type) {
395
		case IMSG_CTL_RELOAD:
396
			if (eigrp_reload() == -1)
397
				log_warnx("configuration reload failed");
398
			else
399
				log_debug("configuration reloaded");
400
			break;
401
		case IMSG_CTL_FIB_COUPLE:
402
			kr_fib_couple();
403
			break;
404
		case IMSG_CTL_FIB_DECOUPLE:
405
			kr_fib_decouple();
406
			break;
407
		case IMSG_CTL_KROUTE:
408
			kr_show_route(&imsg);
409
			break;
410
		case IMSG_CTL_IFINFO:
411
			if (imsg.hdr.len == IMSG_HEADER_SIZE)
412
				kr_ifinfo(NULL, imsg.hdr.pid);
413
			else if (imsg.hdr.len == IMSG_HEADER_SIZE + IFNAMSIZ)
414
				kr_ifinfo(imsg.data, imsg.hdr.pid);
415
			else
416
				log_warnx("IFINFO request with wrong len");
417
			break;
418
		case IMSG_CTL_LOG_VERBOSE:
419
			/* already checked by eigrpe */
420
			memcpy(&verbose, imsg.data, sizeof(verbose));
421
			log_verbose(verbose);
422
			break;
423
		default:
424
			log_debug("%s: error handling imsg %d", __func__,
425
			    imsg.hdr.type);
426
			break;
427
		}
428
		imsg_free(&imsg);
429
	}
430
	if (!shut)
431
		imsg_event_add(iev);
432
	else {
433
		/* this pipe is dead, so remove the event handler */
434
		event_del(&iev->ev);
435
		event_loopexit(NULL);
436
	}
437
}
438
439
/* ARGSUSED */
440
static void
441
main_dispatch_rde(int fd, short event, void *bula)
442
{
443
	struct imsgev	*iev = bula;
444
	struct imsgbuf  *ibuf;
445
	struct imsg	 imsg;
446
	ssize_t		 n;
447
	int		 shut = 0;
448
449
	ibuf = &iev->ibuf;
450
451
	if (event & EV_READ) {
452
		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
453
			fatal("imsg_read error");
454
		if (n == 0)	/* connection closed */
455
			shut = 1;
456
	}
457
	if (event & EV_WRITE) {
458
		if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
459
			fatal("msgbuf_write");
460
		if (n == 0)	/* connection closed */
461
			shut = 1;
462
	}
463
464
	for (;;) {
465
		if ((n = imsg_get(ibuf, &imsg)) == -1)
466
			fatal("imsg_get");
467
468
		if (n == 0)
469
			break;
470
471
		switch (imsg.hdr.type) {
472
		case IMSG_KROUTE_CHANGE:
473
			if (imsg.hdr.len - IMSG_HEADER_SIZE !=
474
			    sizeof(struct kroute))
475
				fatalx("invalid size of IMSG_KROUTE_CHANGE");
476
			if (kr_change(imsg.data))
477
				log_warnx("%s: error changing route", __func__);
478
			break;
479
		case IMSG_KROUTE_DELETE:
480
			if (imsg.hdr.len - IMSG_HEADER_SIZE !=
481
			    sizeof(struct kroute))
482
				fatalx("invalid size of IMSG_KROUTE_DELETE");
483
			if (kr_delete(imsg.data))
484
				log_warnx("%s: error deleting route", __func__);
485
			break;
486
487
		default:
488
			log_debug("%s: error handling imsg %d", __func__,
489
			    imsg.hdr.type);
490
			break;
491
		}
492
		imsg_free(&imsg);
493
	}
494
	if (!shut)
495
		imsg_event_add(iev);
496
	else {
497
		/* this pipe is dead, so remove the event handler */
498
		event_del(&iev->ev);
499
		event_loopexit(NULL);
500
	}
501
}
502
503
int
504
main_imsg_compose_eigrpe(int type, pid_t pid, void *data, uint16_t datalen)
505
{
506
	if (iev_eigrpe == NULL)
507
		return (-1);
508
	return (imsg_compose_event(iev_eigrpe, type, 0, pid, -1, data, datalen));
509
}
510
511
int
512
main_imsg_compose_rde(int type, pid_t pid, void *data, uint16_t datalen)
513
{
514
	if (iev_rde == NULL)
515
		return (-1);
516
	return (imsg_compose_event(iev_rde, type, 0, pid, -1, data, datalen));
517
}
518
519
void
520
imsg_event_add(struct imsgev *iev)
521
{
522
	iev->events = EV_READ;
523
	if (iev->ibuf.w.queued)
524
		iev->events |= EV_WRITE;
525
526
	event_del(&iev->ev);
527
	event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev);
528
	event_add(&iev->ev, NULL);
529
}
530
531
int
532
imsg_compose_event(struct imsgev *iev, uint16_t type, uint32_t peerid,
533
    pid_t pid, int fd, void *data, uint16_t datalen)
534
{
535
	int	ret;
536
537
	if ((ret = imsg_compose(&iev->ibuf, type, peerid,
538
	    pid, fd, data, datalen)) != -1)
539
		imsg_event_add(iev);
540
	return (ret);
541
}
542
543
static int
544
main_imsg_send_ipc_sockets(struct imsgbuf *eigrpe_buf, struct imsgbuf *rde_buf)
545
{
546
	int pipe_eigrpe2rde[2];
547
548
	if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
549
	    PF_UNSPEC, pipe_eigrpe2rde) == -1)
550
		return (-1);
551
552
	if (imsg_compose(eigrpe_buf, IMSG_SOCKET_IPC, 0, 0, pipe_eigrpe2rde[0],
553
	    NULL, 0) == -1)
554
		return (-1);
555
	if (imsg_compose(rde_buf, IMSG_SOCKET_IPC, 0, 0, pipe_eigrpe2rde[1],
556
	    NULL, 0) == -1)
557
		return (-1);
558
559
	return (0);
560
}
561
562
struct eigrp *
563
eigrp_find(struct eigrpd_conf *xconf, int af, uint16_t as)
564
{
565
	struct eigrp	*eigrp;
566
567
	TAILQ_FOREACH(eigrp, &xconf->instances, entry)
568
		if (eigrp->af == af && eigrp->as == as)
569
			return (eigrp);
570
571
	return (NULL);
572
}
573
574
static int
575
main_imsg_send_config(struct eigrpd_conf *xconf)
576
{
577
	struct eigrp		*eigrp;
578
	struct eigrp_iface	*ei;
579
580
	if (eigrp_sendboth(IMSG_RECONF_CONF, xconf, sizeof(*xconf)) == -1)
581
		return (-1);
582
583
	TAILQ_FOREACH(eigrp, &xconf->instances, entry) {
584
		if (eigrp_sendboth(IMSG_RECONF_INSTANCE, eigrp,
585
		    sizeof(*eigrp)) == -1)
586
			return (-1);
587
588
		TAILQ_FOREACH(ei, &eigrp->ei_list, e_entry) {
589
			if (eigrp_sendboth(IMSG_RECONF_IFACE, ei->iface,
590
			    sizeof(struct iface)) == -1)
591
				return (-1);
592
593
			if (eigrp_sendboth(IMSG_RECONF_EIGRP_IFACE, ei,
594
			    sizeof(*ei)) == -1)
595
				return (-1);
596
		}
597
	}
598
599
	if (eigrp_sendboth(IMSG_RECONF_END, NULL, 0) == -1)
600
		return (-1);
601
602
	return (0);
603
}
604
605
static int
606
eigrp_reload(void)
607
{
608
	struct eigrpd_conf	*xconf;
609
610
	if ((xconf = parse_config(conffile)) == NULL)
611
		return (-1);
612
613
	if (main_imsg_send_config(xconf) == -1)
614
		return (-1);
615
616
	merge_config(eigrpd_conf, xconf);
617
618
	return (0);
619
}
620
621
static int
622
eigrp_sendboth(enum imsg_type type, void *buf, uint16_t len)
623
{
624
	if (main_imsg_compose_eigrpe(type, 0, buf, len) == -1)
625
		return (-1);
626
	if (main_imsg_compose_rde(type, 0, buf, len) == -1)
627
		return (-1);
628
	return (0);
629
}
630
631
void
632
merge_config(struct eigrpd_conf *conf, struct eigrpd_conf *xconf)
633
{
634
	struct iface		*iface, *itmp, *xi;
635
	struct eigrp		*eigrp, *etmp, *xe;
636
637
	conf->rtr_id = xconf->rtr_id;
638
	conf->flags = xconf->flags;
639
	conf->rdomain= xconf->rdomain;
640
	conf->fib_priority_internal = xconf->fib_priority_internal;
641
	conf->fib_priority_external = xconf->fib_priority_external;
642
	conf->fib_priority_summary = xconf->fib_priority_summary;
643
644
	/* merge interfaces */
645
	TAILQ_FOREACH_SAFE(iface, &conf->iface_list, entry, itmp) {
646
		/* find deleted ifaces */
647
		if ((xi = if_lookup(xconf, iface->ifindex)) == NULL) {
648
			TAILQ_REMOVE(&conf->iface_list, iface, entry);
649
			free(iface);
650
		}
651
	}
652
	TAILQ_FOREACH_SAFE(xi, &xconf->iface_list, entry, itmp) {
653
		/* find new ifaces */
654
		if ((iface = if_lookup(conf, xi->ifindex)) == NULL) {
655
			TAILQ_REMOVE(&xconf->iface_list, xi, entry);
656
			TAILQ_INSERT_TAIL(&conf->iface_list, xi, entry);
657
			continue;
658
		}
659
660
		/* TODO update existing ifaces */
661
	}
662
663
	/* merge instances */
664
	TAILQ_FOREACH_SAFE(eigrp, &conf->instances, entry, etmp) {
665
		/* find deleted instances */
666
		if ((xe = eigrp_find(xconf, eigrp->af, eigrp->as)) == NULL) {
667
			TAILQ_REMOVE(&conf->instances, eigrp, entry);
668
669
			switch (eigrpd_process) {
670
			case PROC_RDE_ENGINE:
671
				rde_instance_del(eigrp);
672
				break;
673
			case PROC_EIGRP_ENGINE:
674
				eigrpe_instance_del(eigrp);
675
				break;
676
			case PROC_MAIN:
677
				free(eigrp);
678
				break;
679
			}
680
		}
681
	}
682
	TAILQ_FOREACH_SAFE(xe, &xconf->instances, entry, etmp) {
683
		/* find new instances */
684
		if ((eigrp = eigrp_find(conf, xe->af, xe->as)) == NULL) {
685
			TAILQ_REMOVE(&xconf->instances, xe, entry);
686
			TAILQ_INSERT_TAIL(&conf->instances, xe, entry);
687
688
			switch (eigrpd_process) {
689
			case PROC_RDE_ENGINE:
690
				rde_instance_init(xe);
691
				break;
692
			case PROC_EIGRP_ENGINE:
693
				eigrpe_instance_init(xe);
694
				break;
695
			case PROC_MAIN:
696
				break;
697
			}
698
			continue;
699
		}
700
701
		/* update existing instances */
702
		merge_instances(conf, eigrp, xe);
703
	}
704
705
	/* resend addresses to activate new interfaces */
706
	if (eigrpd_process == PROC_MAIN)
707
		kif_redistribute();
708
709
	free(xconf);
710
}
711
712
static void
713
merge_instances(struct eigrpd_conf *xconf, struct eigrp *eigrp, struct eigrp *xe)
714
{
715
	/* TODO */
716
}
717
718
struct eigrpd_conf *
719
config_new_empty(void)
720
{
721
	struct eigrpd_conf	*xconf;
722
723
	xconf = calloc(1, sizeof(*xconf));
724
	if (xconf == NULL)
725
		fatal(NULL);
726
727
	TAILQ_INIT(&xconf->instances);
728
	TAILQ_INIT(&xconf->iface_list);
729
730
	return (xconf);
731
}
732
733
void
734
config_clear(struct eigrpd_conf *conf)
735
{
736
	struct eigrpd_conf	*xconf;
737
738
	/* merge current config with an empty config */
739
	xconf = config_new_empty();
740
	merge_config(conf, xconf);
741
742
	free(conf);
743
}