xref: /openbsd-src/usr.sbin/ospfd/ospfd.c (revision f1b790a5738b7375271fee81f99119b1f82f2cfd)
1*f1b790a5Sclaudio /*	$OpenBSD: ospfd.c,v 1.124 2024/11/21 13:38:14 claudio Exp $ */
2204df0f8Sclaudio 
3204df0f8Sclaudio /*
4204df0f8Sclaudio  * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org>
5367f601bSnorby  * Copyright (c) 2004 Esben Norby <norby@openbsd.org>
6204df0f8Sclaudio  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
7204df0f8Sclaudio  *
8204df0f8Sclaudio  * Permission to use, copy, modify, and distribute this software for any
9204df0f8Sclaudio  * purpose with or without fee is hereby granted, provided that the above
10204df0f8Sclaudio  * copyright notice and this permission notice appear in all copies.
11204df0f8Sclaudio  *
12204df0f8Sclaudio  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13204df0f8Sclaudio  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14204df0f8Sclaudio  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15204df0f8Sclaudio  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16204df0f8Sclaudio  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17204df0f8Sclaudio  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18204df0f8Sclaudio  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19204df0f8Sclaudio  */
20204df0f8Sclaudio 
21204df0f8Sclaudio #include <sys/types.h>
22204df0f8Sclaudio #include <sys/socket.h>
23204df0f8Sclaudio #include <sys/queue.h>
24204df0f8Sclaudio #include <sys/time.h>
25204df0f8Sclaudio #include <sys/stat.h>
26204df0f8Sclaudio #include <sys/wait.h>
279e6b6024Snorby #include <sys/sysctl.h>
28f2e37bc3Sbenno #include <syslog.h>
29204df0f8Sclaudio 
30204df0f8Sclaudio #include <netinet/in.h>
31204df0f8Sclaudio #include <arpa/inet.h>
32ac149fe2Sremi #include <net/if_types.h>
33204df0f8Sclaudio 
34204df0f8Sclaudio #include <event.h>
35204df0f8Sclaudio #include <err.h>
36204df0f8Sclaudio #include <errno.h>
37204df0f8Sclaudio #include <pwd.h>
38204df0f8Sclaudio #include <stdio.h>
39204df0f8Sclaudio #include <stdlib.h>
4044cb7d8eSclaudio #include <string.h>
41204df0f8Sclaudio #include <signal.h>
42204df0f8Sclaudio #include <unistd.h>
43204df0f8Sclaudio 
44204df0f8Sclaudio #include "ospfd.h"
45204df0f8Sclaudio #include "ospf.h"
46204df0f8Sclaudio #include "ospfe.h"
47204df0f8Sclaudio #include "control.h"
48204df0f8Sclaudio #include "log.h"
49204df0f8Sclaudio #include "rde.h"
50204df0f8Sclaudio 
51204df0f8Sclaudio void		main_sig_handler(int, short, void *);
52cbb557dbShenning __dead void	usage(void);
53a27c0559Srenato __dead void	ospfd_shutdown(void);
54204df0f8Sclaudio 
55204df0f8Sclaudio void	main_dispatch_ospfe(int, short, void *);
56204df0f8Sclaudio void	main_dispatch_rde(int, short, void *);
57204df0f8Sclaudio 
58f28af201Sclaudio int	ospf_reload(void);
59f28af201Sclaudio int	ospf_sendboth(enum imsg_type, void *, u_int16_t);
603a0d6b5fSclaudio int	merge_interfaces(struct area *, struct area *);
61f28af201Sclaudio struct iface *iface_lookup(struct area *, struct iface *);
62f28af201Sclaudio 
63204df0f8Sclaudio int	pipe_parent2ospfe[2];
64204df0f8Sclaudio int	pipe_parent2rde[2];
65204df0f8Sclaudio int	pipe_ospfe2rde[2];
66204df0f8Sclaudio 
67d8606ed9Sclaudio enum ospfd_process	 ospfd_process;
68f28af201Sclaudio struct ospfd_conf	*ospfd_conf = NULL;
69d8606ed9Sclaudio static struct imsgev	*iev_ospfe;
70d8606ed9Sclaudio static struct imsgev	*iev_rde;
71f28af201Sclaudio char			*conffile;
72204df0f8Sclaudio 
734ce4cce4Shenning pid_t			 ospfe_pid = 0;
744ce4cce4Shenning pid_t			 rde_pid = 0;
75204df0f8Sclaudio 
76204df0f8Sclaudio void
77204df0f8Sclaudio main_sig_handler(int sig, short event, void *arg)
78204df0f8Sclaudio {
79a27c0559Srenato 	/* signal handler rules don't apply, libevent decouples for us */
80204df0f8Sclaudio 	switch (sig) {
81204df0f8Sclaudio 	case SIGTERM:
82204df0f8Sclaudio 	case SIGINT:
83d67317b7Shenning 		ospfd_shutdown();
84a27c0559Srenato 		/* NOTREACHED */
85204df0f8Sclaudio 	case SIGHUP:
861035f31cSpyr 		if (ospf_reload() == -1)
871035f31cSpyr 			log_warnx("configuration reload failed");
881035f31cSpyr 		else
891035f31cSpyr 			log_debug("configuration reloaded");
90204df0f8Sclaudio 		break;
91204df0f8Sclaudio 	default:
92204df0f8Sclaudio 		fatalx("unexpected signal");
93204df0f8Sclaudio 		/* NOTREACHED */
94204df0f8Sclaudio 	}
95204df0f8Sclaudio }
96204df0f8Sclaudio 
97cbb557dbShenning __dead void
98204df0f8Sclaudio usage(void)
99204df0f8Sclaudio {
100204df0f8Sclaudio 	extern char *__progname;
101204df0f8Sclaudio 
102d1b94773Sreyk 	fprintf(stderr, "usage: %s [-cdnv] [-D macro=value]"
103d1b94773Sreyk 	    " [-f file] [-s socket]\n",
10400a91a7aSclaudio 	    __progname);
105204df0f8Sclaudio 	exit(1);
106204df0f8Sclaudio }
107204df0f8Sclaudio 
108204df0f8Sclaudio int
109204df0f8Sclaudio main(int argc, char *argv[])
110204df0f8Sclaudio {
111a27c0559Srenato 	struct event		 ev_sigint, ev_sigterm, ev_sighup;
112f28af201Sclaudio 	struct area		*a;
11304fa3fdbSnorby 	int			 ch, opts = 0;
114204df0f8Sclaudio 	int			 debug = 0;
1159e6b6024Snorby 	int			 ipforwarding;
1169e6b6024Snorby 	int			 mib[4];
1179e6b6024Snorby 	size_t			 len;
118ec107b41Sremi 	char			*sockname = NULL;
119617bb465Sremi 	int			 control_fd;
120204df0f8Sclaudio 
121204df0f8Sclaudio 	conffile = CONF_FILE;
122204df0f8Sclaudio 	ospfd_process = PROC_MAIN;
123204df0f8Sclaudio 
124f2e37bc3Sbenno 	log_init(1, LOG_DAEMON);	/* log to stderr until daemonized */
125f2e37bc3Sbenno 	log_procinit(log_procnames[ospfd_process]);
126e23c639fSpyr 
127d1b94773Sreyk 	while ((ch = getopt(argc, argv, "cdD:f:ns:v")) != -1) {
128204df0f8Sclaudio 		switch (ch) {
129fba2d3d0Sclaudio 		case 'c':
130fba2d3d0Sclaudio 			opts |= OSPFD_OPT_FORCE_DEMOTE;
131fba2d3d0Sclaudio 			break;
132204df0f8Sclaudio 		case 'd':
133204df0f8Sclaudio 			debug = 1;
134204df0f8Sclaudio 			break;
13500a91a7aSclaudio 		case 'D':
13600a91a7aSclaudio 			if (cmdline_symset(optarg) < 0)
13700a91a7aSclaudio 				log_warnx("could not parse macro definition %s",
13800a91a7aSclaudio 				    optarg);
13900a91a7aSclaudio 			break;
140204df0f8Sclaudio 		case 'f':
141204df0f8Sclaudio 			conffile = optarg;
142204df0f8Sclaudio 			break;
14304fa3fdbSnorby 		case 'n':
14404fa3fdbSnorby 			opts |= OSPFD_OPT_NOACTION;
14504fa3fdbSnorby 			break;
146d1b94773Sreyk 		case 's':
147d1b94773Sreyk 			sockname = optarg;
148d1b94773Sreyk 			break;
14904fa3fdbSnorby 		case 'v':
15004fa3fdbSnorby 			if (opts & OSPFD_OPT_VERBOSE)
15104fa3fdbSnorby 				opts |= OSPFD_OPT_VERBOSE2;
15204fa3fdbSnorby 			opts |= OSPFD_OPT_VERBOSE;
1533d3f412bSremi 			log_setverbose(1);
15404fa3fdbSnorby 			break;
155204df0f8Sclaudio 		default:
156204df0f8Sclaudio 			usage();
157204df0f8Sclaudio 			/* NOTREACHED */
158204df0f8Sclaudio 		}
159204df0f8Sclaudio 	}
160204df0f8Sclaudio 
161fde55bc4Spyr 	argc -= optind;
162fde55bc4Spyr 	argv += optind;
163fde55bc4Spyr 	if (argc > 0)
164fde55bc4Spyr 		usage();
165fde55bc4Spyr 
1669e6b6024Snorby 	mib[0] = CTL_NET;
1679e6b6024Snorby 	mib[1] = PF_INET;
1689e6b6024Snorby 	mib[2] = IPPROTO_IP;
1699e6b6024Snorby 	mib[3] = IPCTL_FORWARDING;
1709e6b6024Snorby 	len = sizeof(ipforwarding);
1719e6b6024Snorby 	if (sysctl(mib, 4, &ipforwarding, &len, NULL, 0) == -1)
1729e6b6024Snorby 		err(1, "sysctl");
1739e6b6024Snorby 
1741891964aSclaudio 	if (ipforwarding != 1) {
1751891964aSclaudio 		log_warnx("WARNING: IP forwarding NOT enabled, "
1761891964aSclaudio 		    "running as stub router");
1771891964aSclaudio 		opts |= OSPFD_OPT_STUB_ROUTER;
1781891964aSclaudio 	}
1791891964aSclaudio 
180e9fa2173Sclaudio 	/* fetch interfaces early */
181e9fa2173Sclaudio 	kif_init();
182e9fa2173Sclaudio 
183204df0f8Sclaudio 	/* parse config file */
184fff8a082Sclaudio 	if ((ospfd_conf = parse_config(conffile, opts)) == NULL) {
185358269bbSclaudio 		kif_clear();
186204df0f8Sclaudio 		exit(1);
187fff8a082Sclaudio 	}
188f65e64a0Sdenis 	if (ospfd_conf->rtr_id.s_addr == 0)
189f65e64a0Sdenis 		ospfd_conf->rtr_id.s_addr = get_rtr_id();
190ec107b41Sremi 
191ec107b41Sremi 	if (sockname == NULL) {
192ec107b41Sremi 		if (asprintf(&sockname, "%s.%d", OSPFD_SOCKET,
193ec107b41Sremi 		    ospfd_conf->rdomain) == -1)
194ec107b41Sremi 			err(1, "asprintf");
195ec107b41Sremi 	}
196ec107b41Sremi 
197d1b94773Sreyk 	ospfd_conf->csock = sockname;
198204df0f8Sclaudio 
199f28af201Sclaudio 	if (ospfd_conf->opts & OSPFD_OPT_NOACTION) {
200f28af201Sclaudio 		if (ospfd_conf->opts & OSPFD_OPT_VERBOSE)
201f28af201Sclaudio 			print_config(ospfd_conf);
20204fa3fdbSnorby 		else
20304fa3fdbSnorby 			fprintf(stderr, "configuration OK\n");
204358269bbSclaudio 		kif_clear();
20504fa3fdbSnorby 		exit(0);
20604fa3fdbSnorby 	}
20704fa3fdbSnorby 
208a139c072Sdavid 	/* check for root privileges  */
209204df0f8Sclaudio 	if (geteuid())
210204df0f8Sclaudio 		errx(1, "need root privileges");
211204df0f8Sclaudio 
212204df0f8Sclaudio 	/* check for ospfd user */
213204df0f8Sclaudio 	if (getpwnam(OSPFD_USER) == NULL)
214204df0f8Sclaudio 		errx(1, "unknown user %s", OSPFD_USER);
215204df0f8Sclaudio 
216f2e37bc3Sbenno 	log_init(debug, LOG_DAEMON);
217f2e37bc3Sbenno 	log_setverbose(ospfd_conf->opts & OSPFD_OPT_VERBOSE);
218e23c639fSpyr 
219617bb465Sremi 	if ((control_check(ospfd_conf->csock)) == -1)
2200347b698Sflorian 		fatalx("ospfd already running");
221617bb465Sremi 
222204df0f8Sclaudio 	if (!debug)
223204df0f8Sclaudio 		daemon(1, 0);
224204df0f8Sclaudio 
225204df0f8Sclaudio 	log_info("startup");
226204df0f8Sclaudio 
22758ef7452Sclaudio 	if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
22858ef7452Sclaudio 	    PF_UNSPEC, pipe_parent2ospfe) == -1)
229204df0f8Sclaudio 		fatal("socketpair");
23058ef7452Sclaudio 	if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
23158ef7452Sclaudio 	    PF_UNSPEC, pipe_parent2rde) == -1)
232204df0f8Sclaudio 		fatal("socketpair");
23358ef7452Sclaudio 	if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
23458ef7452Sclaudio 	    PF_UNSPEC, pipe_ospfe2rde) == -1)
235204df0f8Sclaudio 		fatal("socketpair");
236204df0f8Sclaudio 
237204df0f8Sclaudio 	/* start children */
238f28af201Sclaudio 	rde_pid = rde(ospfd_conf, pipe_parent2rde, pipe_ospfe2rde,
239f28af201Sclaudio 	    pipe_parent2ospfe);
240f28af201Sclaudio 	ospfe_pid = ospfe(ospfd_conf, pipe_parent2ospfe, pipe_ospfe2rde,
241204df0f8Sclaudio 	    pipe_parent2rde);
242204df0f8Sclaudio 
243d713ab80Sclaudio 	event_init();
244d713ab80Sclaudio 
245204df0f8Sclaudio 	/* setup signal handler */
246204df0f8Sclaudio 	signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL);
247204df0f8Sclaudio 	signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL);
248608e9eabSclaudio 	signal_set(&ev_sighup, SIGHUP, main_sig_handler, NULL);
249204df0f8Sclaudio 	signal_add(&ev_sigint, NULL);
250204df0f8Sclaudio 	signal_add(&ev_sigterm, NULL);
251204df0f8Sclaudio 	signal_add(&ev_sighup, NULL);
252da456578Sclaudio 	signal(SIGPIPE, SIG_IGN);
253204df0f8Sclaudio 
254204df0f8Sclaudio 	/* setup pipes to children */
255204df0f8Sclaudio 	close(pipe_parent2ospfe[1]);
256204df0f8Sclaudio 	close(pipe_parent2rde[1]);
257204df0f8Sclaudio 	close(pipe_ospfe2rde[0]);
258204df0f8Sclaudio 	close(pipe_ospfe2rde[1]);
259204df0f8Sclaudio 
2607b4c0c10Seric 	if ((iev_ospfe = malloc(sizeof(struct imsgev))) == NULL ||
2617b4c0c10Seric 	    (iev_rde = malloc(sizeof(struct imsgev))) == NULL)
262204df0f8Sclaudio 		fatal(NULL);
263*f1b790a5Sclaudio 	if (imsgbuf_init(&iev_ospfe->ibuf, pipe_parent2ospfe[0]) == -1)
264*f1b790a5Sclaudio 		fatal(NULL);
265*f1b790a5Sclaudio 	imsgbuf_allow_fdpass(&iev_ospfe->ibuf);
2667b4c0c10Seric 	iev_ospfe->handler = main_dispatch_ospfe;
267*f1b790a5Sclaudio 	if (imsgbuf_init(&iev_rde->ibuf, pipe_parent2rde[0]) == -1)
268*f1b790a5Sclaudio 		fatal(NULL);
2697b4c0c10Seric 	iev_rde->handler = main_dispatch_rde;
270204df0f8Sclaudio 
271204df0f8Sclaudio 	/* setup event handler */
2727b4c0c10Seric 	iev_ospfe->events = EV_READ;
2737b4c0c10Seric 	event_set(&iev_ospfe->ev, iev_ospfe->ibuf.fd, iev_ospfe->events,
2747b4c0c10Seric 	    iev_ospfe->handler, iev_ospfe);
2757b4c0c10Seric 	event_add(&iev_ospfe->ev, NULL);
276204df0f8Sclaudio 
2777b4c0c10Seric 	iev_rde->events = EV_READ;
2787b4c0c10Seric 	event_set(&iev_rde->ev, iev_rde->ibuf.fd, iev_rde->events,
2797b4c0c10Seric 	    iev_rde->handler, iev_rde);
2807b4c0c10Seric 	event_add(&iev_rde->ev, NULL);
281204df0f8Sclaudio 
282617bb465Sremi 	if ((control_fd = control_init(ospfd_conf->csock)) == -1)
283617bb465Sremi 		fatalx("control socket setup failed");
284617bb465Sremi 	main_imsg_compose_ospfe_fd(IMSG_CONTROLFD, 0, control_fd);
285617bb465Sremi 
286bb8a822fSremi 	if (unveil("/", "r") == -1)
287025f8c0aSderaadt 		fatal("unveil /");
288bb8a822fSremi 	if (unveil(NULL, NULL) == -1)
289bb8a822fSremi 		fatal("unveil");
290bb8a822fSremi 
291e4caa3d9Sclaudio 	if (kr_init(!(ospfd_conf->flags & OSPFD_FLAG_NO_FIB_UPDATE),
2924c260f66Sremi 	    ospfd_conf->rdomain, ospfd_conf->redist_label_or_prefix,
2934c260f66Sremi 	    ospfd_conf->fib_priority) == -1)
2949c2db8ffSclaudio 		fatalx("kr_init failed");
295204df0f8Sclaudio 
2964bbf72b3Skrw 	/* remove unneeded stuff from config */
297f28af201Sclaudio 	while ((a = LIST_FIRST(&ospfd_conf->area_list)) != NULL) {
298f28af201Sclaudio 		LIST_REMOVE(a, entry);
299f28af201Sclaudio 		area_del(a);
300f28af201Sclaudio 	}
301f28af201Sclaudio 
302204df0f8Sclaudio 	event_dispatch();
303204df0f8Sclaudio 
304204df0f8Sclaudio 	ospfd_shutdown();
305204df0f8Sclaudio 	/* NOTREACHED */
306204df0f8Sclaudio 	return (0);
307204df0f8Sclaudio }
308204df0f8Sclaudio 
309a27c0559Srenato __dead void
310204df0f8Sclaudio ospfd_shutdown(void)
311204df0f8Sclaudio {
312204df0f8Sclaudio 	pid_t			 pid;
313a27c0559Srenato 	int			 status;
31472f25908Sclaudio 	struct redistribute	*r;
315204df0f8Sclaudio 
316a27c0559Srenato 	/* close pipes */
3179cbf9e90Sclaudio 	imsgbuf_clear(&iev_ospfe->ibuf);
318a27c0559Srenato 	close(iev_ospfe->ibuf.fd);
3199cbf9e90Sclaudio 	imsgbuf_clear(&iev_rde->ibuf);
320a27c0559Srenato 	close(iev_rde->ibuf.fd);
321204df0f8Sclaudio 
322faef135eSremi 	control_cleanup();
32372f25908Sclaudio 	while ((r = SIMPLEQ_FIRST(&ospfd_conf->redist_list)) != NULL) {
32472f25908Sclaudio 		SIMPLEQ_REMOVE_HEAD(&ospfd_conf->redist_list, entry);
32572f25908Sclaudio 		free(r);
32672f25908Sclaudio 	}
327204df0f8Sclaudio 	kr_shutdown();
328fba2d3d0Sclaudio 	carp_demote_shutdown();
329204df0f8Sclaudio 
330a27c0559Srenato 	log_debug("waiting for children to terminate");
331204df0f8Sclaudio 	do {
332a27c0559Srenato 		pid = wait(&status);
333a27c0559Srenato 		if (pid == -1) {
334a27c0559Srenato 			if (errno != EINTR && errno != ECHILD)
335204df0f8Sclaudio 				fatal("wait");
336a27c0559Srenato 		} else if (WIFSIGNALED(status))
337a27c0559Srenato 			log_warnx("%s terminated; signal %d",
338a27c0559Srenato 			    (pid == rde_pid) ? "route decision engine" :
339a27c0559Srenato 			    "ospf engine", WTERMSIG(status));
340204df0f8Sclaudio 	} while (pid != -1 || (pid == -1 && errno == EINTR));
341204df0f8Sclaudio 
3427b4c0c10Seric 	free(iev_ospfe);
3437b4c0c10Seric 	free(iev_rde);
344f28af201Sclaudio 	free(ospfd_conf);
345204df0f8Sclaudio 
346204df0f8Sclaudio 	log_info("terminating");
347204df0f8Sclaudio 	exit(0);
348204df0f8Sclaudio }
349204df0f8Sclaudio 
350204df0f8Sclaudio /* imsg handling */
351204df0f8Sclaudio void
352204df0f8Sclaudio main_dispatch_ospfe(int fd, short event, void *bula)
353204df0f8Sclaudio {
3547b4c0c10Seric 	struct imsgev		*iev = bula;
3557b4c0c10Seric 	struct imsgbuf		*ibuf;
356204df0f8Sclaudio 	struct imsg		 imsg;
357fba2d3d0Sclaudio 	struct demote_msg	 dmsg;
35826e8c965Sclaudio 	ssize_t			 n;
359636d06c3Sclaudio 	int			 shut = 0, verbose;
360204df0f8Sclaudio 
3617b4c0c10Seric 	ibuf = &iev->ibuf;
3627b4c0c10Seric 
363b202c6d3Sclaudio 	if (event & EV_READ) {
364668e5ba9Sclaudio 		if ((n = imsgbuf_read(ibuf)) == -1)
365dd7efffeSclaudio 			fatal("imsgbuf_read error");
366204df0f8Sclaudio 		if (n == 0)	/* connection closed */
367410c7411Sclaudio 			shut = 1;
368b202c6d3Sclaudio 	}
369b202c6d3Sclaudio 	if (event & EV_WRITE) {
370dd7efffeSclaudio 		if (imsgbuf_write(ibuf) == -1) {
371c1aa9554Sclaudio 			if (errno == EPIPE)	/* connection closed */
3721203692fSkrw 				shut = 1;
373c1aa9554Sclaudio 			else
374dd7efffeSclaudio 				fatal("imsgbuf_write");
375c1aa9554Sclaudio 		}
376204df0f8Sclaudio 	}
377204df0f8Sclaudio 
378204df0f8Sclaudio 	for (;;) {
379204df0f8Sclaudio 		if ((n = imsg_get(ibuf, &imsg)) == -1)
380204df0f8Sclaudio 			fatal("imsg_get");
381204df0f8Sclaudio 
382204df0f8Sclaudio 		if (n == 0)
383204df0f8Sclaudio 			break;
384204df0f8Sclaudio 
385204df0f8Sclaudio 		switch (imsg.hdr.type) {
386204df0f8Sclaudio 		case IMSG_CTL_RELOAD:
387f28af201Sclaudio 			if (ospf_reload() == -1)
388f28af201Sclaudio 				log_warnx("configuration reload failed");
389f28af201Sclaudio 			else
390f28af201Sclaudio 				log_debug("configuration reloaded");
391204df0f8Sclaudio 			break;
392204df0f8Sclaudio 		case IMSG_CTL_FIB_COUPLE:
393204df0f8Sclaudio 			kr_fib_couple();
394204df0f8Sclaudio 			break;
395204df0f8Sclaudio 		case IMSG_CTL_FIB_DECOUPLE:
396204df0f8Sclaudio 			kr_fib_decouple();
397204df0f8Sclaudio 			break;
398119f0f1dSdlg 		case IMSG_CTL_FIB_RELOAD:
399119f0f1dSdlg 			kr_fib_reload();
400119f0f1dSdlg 			break;
401b6b3a59aSclaudio 		case IMSG_CTL_KROUTE:
402b6b3a59aSclaudio 		case IMSG_CTL_KROUTE_ADDR:
403b6b3a59aSclaudio 			kr_show_route(&imsg);
404b6b3a59aSclaudio 			break;
405b6b3a59aSclaudio 		case IMSG_CTL_IFINFO:
40670955e50Sclaudio 			if (imsg.hdr.len == IMSG_HEADER_SIZE)
40770955e50Sclaudio 				kr_ifinfo(NULL, imsg.hdr.pid);
40870955e50Sclaudio 			else if (imsg.hdr.len == IMSG_HEADER_SIZE + IFNAMSIZ)
40970955e50Sclaudio 				kr_ifinfo(imsg.data, imsg.hdr.pid);
410b6b3a59aSclaudio 			else
41170955e50Sclaudio 				log_warnx("IFINFO request with wrong len");
412b6b3a59aSclaudio 			break;
413fba2d3d0Sclaudio 		case IMSG_DEMOTE:
414fba2d3d0Sclaudio 			if (imsg.hdr.len - IMSG_HEADER_SIZE != sizeof(dmsg))
415fba2d3d0Sclaudio 				fatalx("invalid size of OE request");
416fba2d3d0Sclaudio 			memcpy(&dmsg, imsg.data, sizeof(dmsg));
417fba2d3d0Sclaudio 			carp_demote_set(dmsg.demote_group, dmsg.level);
418fba2d3d0Sclaudio 			break;
419636d06c3Sclaudio 		case IMSG_CTL_LOG_VERBOSE:
420636d06c3Sclaudio 			/* already checked by ospfe */
421636d06c3Sclaudio 			memcpy(&verbose, imsg.data, sizeof(verbose));
422f2e37bc3Sbenno 			log_setverbose(verbose);
423636d06c3Sclaudio 			break;
424204df0f8Sclaudio 		default:
425204df0f8Sclaudio 			log_debug("main_dispatch_ospfe: error handling imsg %d",
426204df0f8Sclaudio 			    imsg.hdr.type);
427204df0f8Sclaudio 			break;
428204df0f8Sclaudio 		}
429204df0f8Sclaudio 		imsg_free(&imsg);
430204df0f8Sclaudio 	}
431410c7411Sclaudio 	if (!shut)
4327b4c0c10Seric 		imsg_event_add(iev);
433410c7411Sclaudio 	else {
434410c7411Sclaudio 		/* this pipe is dead, so remove the event handler */
4357b4c0c10Seric 		event_del(&iev->ev);
436410c7411Sclaudio 		event_loopexit(NULL);
437410c7411Sclaudio 	}
438204df0f8Sclaudio }
439204df0f8Sclaudio 
440204df0f8Sclaudio void
441204df0f8Sclaudio main_dispatch_rde(int fd, short event, void *bula)
442204df0f8Sclaudio {
4437b4c0c10Seric 	struct imsgev	*iev = bula;
4447b4c0c10Seric 	struct imsgbuf  *ibuf;
445204df0f8Sclaudio 	struct imsg	 imsg;
44626e8c965Sclaudio 	ssize_t		 n;
447d5218eb1Sclaudio 	int		 count, shut = 0;
448204df0f8Sclaudio 
4497b4c0c10Seric 	ibuf = &iev->ibuf;
4507b4c0c10Seric 
451b202c6d3Sclaudio 	if (event & EV_READ) {
452668e5ba9Sclaudio 		if ((n = imsgbuf_read(ibuf)) == -1)
453dd7efffeSclaudio 			fatal("imsgbuf_read error");
454204df0f8Sclaudio 		if (n == 0)	/* connection closed */
455410c7411Sclaudio 			shut = 1;
456b202c6d3Sclaudio 	}
457b202c6d3Sclaudio 	if (event & EV_WRITE) {
458dd7efffeSclaudio 		if (imsgbuf_write(ibuf) == -1) {
459c1aa9554Sclaudio 			if (errno == EPIPE)	/* connection closed */
4601203692fSkrw 				shut = 1;
461c1aa9554Sclaudio 			else
462dd7efffeSclaudio 				fatal("imsgbuf_write");
463c1aa9554Sclaudio 		}
464204df0f8Sclaudio 	}
465204df0f8Sclaudio 
466204df0f8Sclaudio 	for (;;) {
467204df0f8Sclaudio 		if ((n = imsg_get(ibuf, &imsg)) == -1)
468204df0f8Sclaudio 			fatal("imsg_get");
469204df0f8Sclaudio 
470204df0f8Sclaudio 		if (n == 0)
471204df0f8Sclaudio 			break;
472204df0f8Sclaudio 
473204df0f8Sclaudio 		switch (imsg.hdr.type) {
4743ada9d8fSnorby 		case IMSG_KROUTE_CHANGE:
475d5218eb1Sclaudio 			count = (imsg.hdr.len - IMSG_HEADER_SIZE) /
476d5218eb1Sclaudio 			    sizeof(struct kroute);
477d5218eb1Sclaudio 			if (kr_change(imsg.data, count))
478eb1522a1Snorby 				log_warn("main_dispatch_rde: error changing "
479eb1522a1Snorby 				    "route");
480eb1522a1Snorby 			break;
481eb1522a1Snorby 		case IMSG_KROUTE_DELETE:
482eb1522a1Snorby 			if (kr_delete(imsg.data))
483eb1522a1Snorby 				log_warn("main_dispatch_rde: error deleting "
484eb1522a1Snorby 				    "route");
4853ada9d8fSnorby 			break;
486204df0f8Sclaudio 		default:
487204df0f8Sclaudio 			log_debug("main_dispatch_rde: error handling imsg %d",
488204df0f8Sclaudio 			    imsg.hdr.type);
489204df0f8Sclaudio 			break;
490204df0f8Sclaudio 		}
491204df0f8Sclaudio 		imsg_free(&imsg);
492204df0f8Sclaudio 	}
493410c7411Sclaudio 	if (!shut)
4947b4c0c10Seric 		imsg_event_add(iev);
495410c7411Sclaudio 	else {
496410c7411Sclaudio 		/* this pipe is dead, so remove the event handler */
4977b4c0c10Seric 		event_del(&iev->ev);
498410c7411Sclaudio 		event_loopexit(NULL);
499410c7411Sclaudio 	}
500204df0f8Sclaudio }
501204df0f8Sclaudio 
502204df0f8Sclaudio void
503204df0f8Sclaudio main_imsg_compose_ospfe(int type, pid_t pid, void *data, u_int16_t datalen)
504204df0f8Sclaudio {
5053a9b53d2Sbenno 	if (iev_ospfe)
5067b4c0c10Seric 		imsg_compose_event(iev_ospfe, type, 0, pid, -1, data, datalen);
507204df0f8Sclaudio }
508204df0f8Sclaudio 
509204df0f8Sclaudio void
510617bb465Sremi main_imsg_compose_ospfe_fd(int type, pid_t pid, int fd)
511617bb465Sremi {
512617bb465Sremi 	if (iev_ospfe)
513617bb465Sremi 		imsg_compose_event(iev_ospfe, type, 0, pid, fd, NULL, 0);
514617bb465Sremi }
515617bb465Sremi 
516617bb465Sremi void
517204df0f8Sclaudio main_imsg_compose_rde(int type, pid_t pid, void *data, u_int16_t datalen)
518204df0f8Sclaudio {
5193a9b53d2Sbenno 	if (iev_rde)
5207b4c0c10Seric 		imsg_compose_event(iev_rde, type, 0, pid, -1, data, datalen);
521204df0f8Sclaudio }
522204df0f8Sclaudio 
523204df0f8Sclaudio void
5247b4c0c10Seric imsg_event_add(struct imsgev *iev)
525204df0f8Sclaudio {
5267b4c0c10Seric 	iev->events = EV_READ;
52731be28caSclaudio 	if (imsgbuf_queuelen(&iev->ibuf) > 0)
5287b4c0c10Seric 		iev->events |= EV_WRITE;
529204df0f8Sclaudio 
5307b4c0c10Seric 	event_del(&iev->ev);
5317b4c0c10Seric 	event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev);
5327b4c0c10Seric 	event_add(&iev->ev, NULL);
533204df0f8Sclaudio }
53444cb7d8eSclaudio 
53544cb7d8eSclaudio int
5367b4c0c10Seric imsg_compose_event(struct imsgev *iev, u_int16_t type, u_int32_t peerid,
537d13e54e1Spyr     pid_t pid, int fd, void *data, u_int16_t datalen)
538d13e54e1Spyr {
539d13e54e1Spyr 	int	ret;
540d13e54e1Spyr 
5417b4c0c10Seric 	if ((ret = imsg_compose(&iev->ibuf, type, peerid,
542d13e54e1Spyr 	    pid, fd, data, datalen)) != -1)
5437b4c0c10Seric 		imsg_event_add(iev);
544d13e54e1Spyr 	return (ret);
545d13e54e1Spyr }
546d13e54e1Spyr 
547d13e54e1Spyr int
548f373ed5aSclaudio ospf_redistribute(struct kroute *kr, u_int32_t *metric)
54944cb7d8eSclaudio {
550ac149fe2Sremi 	struct in_addr		 addr;
551ac149fe2Sremi 	struct kif		*kif;
552bbb232d2Sclaudio 	struct redistribute	*r;
55302ba2abaSjca 	int		 	 is_default, depend_ok;
554ac149fe2Sremi 
555ac149fe2Sremi 	bzero(&addr, sizeof(addr));
556bbb232d2Sclaudio 
55739c227bcSmichele 	/* only allow 0.0.0.0/0 via REDIST_DEFAULT */
55802ba2abaSjca 	is_default = (kr->prefix.s_addr == INADDR_ANY && kr->prefixlen == 0);
55944cb7d8eSclaudio 
560f28af201Sclaudio 	SIMPLEQ_FOREACH(r, &ospfd_conf->redist_list, entry) {
561ac149fe2Sremi 		if (r->dependon[0] != '\0') {
562ac149fe2Sremi 			if ((kif = kif_findname(r->dependon, addr, NULL)))
563ac149fe2Sremi 				depend_ok = ifstate_is_up(kif);
564ac149fe2Sremi 			else
565ac149fe2Sremi 				depend_ok = 0;
566ac149fe2Sremi 		} else
567ac149fe2Sremi 			depend_ok = 1;
568ac149fe2Sremi 
569619421e7Sclaudio 		switch (r->type & ~REDIST_NO) {
570bbb232d2Sclaudio 		case REDIST_LABEL:
571921688e4Sclaudio 			if (kr->rtlabel == r->label) {
57217e34b32Sremi 				*metric = depend_ok ? r->metric :
57317e34b32Sremi 				    r->metric | MAX_METRIC;
574619421e7Sclaudio 				return (r->type & REDIST_NO ? 0 : 1);
575921688e4Sclaudio 			}
576bbb232d2Sclaudio 			break;
577bbb232d2Sclaudio 		case REDIST_STATIC:
578bbb232d2Sclaudio 			/*
579bbb232d2Sclaudio 			 * Dynamic routes are not redistributable. Placed here
580bbb232d2Sclaudio 			 * so that link local addresses can be redistributed
581bbb232d2Sclaudio 			 * via a rtlabel.
582bbb232d2Sclaudio 			 */
58339c227bcSmichele 			if (is_default)
58439c227bcSmichele 				continue;
585bbb232d2Sclaudio 			if (kr->flags & F_DYNAMIC)
586bbb232d2Sclaudio 				continue;
587f373ed5aSclaudio 			if (kr->flags & F_STATIC) {
58817e34b32Sremi 				*metric = depend_ok ? r->metric :
58917e34b32Sremi 				    r->metric | MAX_METRIC;
590619421e7Sclaudio 				return (r->type & REDIST_NO ? 0 : 1);
591f373ed5aSclaudio 			}
592275b428fSclaudio 			break;
593bbb232d2Sclaudio 		case REDIST_CONNECTED:
59439c227bcSmichele 			if (is_default)
59539c227bcSmichele 				continue;
596bbb232d2Sclaudio 			if (kr->flags & F_DYNAMIC)
597bbb232d2Sclaudio 				continue;
598f373ed5aSclaudio 			if (kr->flags & F_CONNECTED) {
59917e34b32Sremi 				*metric = depend_ok ? r->metric :
60017e34b32Sremi 				    r->metric | MAX_METRIC;
601619421e7Sclaudio 				return (r->type & REDIST_NO ? 0 : 1);
602f373ed5aSclaudio 			}
603275b428fSclaudio 			break;
604bbb232d2Sclaudio 		case REDIST_ADDR:
605619421e7Sclaudio 			if (kr->flags & F_DYNAMIC)
606619421e7Sclaudio 				continue;
6077644670cSmichele 
6087644670cSmichele 			if (r->addr.s_addr == INADDR_ANY &&
6097644670cSmichele 			    r->mask.s_addr == INADDR_ANY) {
610f1191fa4Smpf 				if (is_default) {
611ac149fe2Sremi 					*metric = depend_ok ? r->metric :
61217e34b32Sremi 					    r->metric | MAX_METRIC;
6137644670cSmichele 					return (r->type & REDIST_NO ? 0 : 1);
614f1191fa4Smpf 				} else
6157644670cSmichele 					return (0);
6167644670cSmichele 			}
6177644670cSmichele 
618619421e7Sclaudio 			if ((kr->prefix.s_addr & r->mask.s_addr) ==
619619421e7Sclaudio 			    (r->addr.s_addr & r->mask.s_addr) &&
620f373ed5aSclaudio 			    kr->prefixlen >= mask2prefixlen(r->mask.s_addr)) {
62117e34b32Sremi 				*metric = depend_ok ? r->metric :
62217e34b32Sremi 				    r->metric | MAX_METRIC;
623619421e7Sclaudio 				return (r->type & REDIST_NO ? 0 : 1);
624f373ed5aSclaudio 			}
625bbb232d2Sclaudio 			break;
6266fa28760Sclaudio 		case REDIST_DEFAULT:
627f1191fa4Smpf 			if (is_default) {
62817e34b32Sremi 				*metric = depend_ok ? r->metric :
62917e34b32Sremi 				    r->metric | MAX_METRIC;
6307644670cSmichele 				return (r->type & REDIST_NO ? 0 : 1);
631f1191fa4Smpf 			}
6326fa28760Sclaudio 			break;
633bbb232d2Sclaudio 		}
634bbb232d2Sclaudio 	}
63544cb7d8eSclaudio 
63644cb7d8eSclaudio 	return (0);
63744cb7d8eSclaudio }
63844cb7d8eSclaudio 
639f28af201Sclaudio int
640f28af201Sclaudio ospf_reload(void)
641f28af201Sclaudio {
642f28af201Sclaudio 	struct area		*area;
643f28af201Sclaudio 	struct iface		*iface;
644f28af201Sclaudio 	struct ospfd_conf	*xconf;
6456fa28760Sclaudio 	struct redistribute	*r;
646f28af201Sclaudio 
647f28af201Sclaudio 	if ((xconf = parse_config(conffile, ospfd_conf->opts)) == NULL)
648f28af201Sclaudio 		return (-1);
649f28af201Sclaudio 
650f65e64a0Sdenis 	/* No router-id was specified, keep existing value */
651f65e64a0Sdenis         if (xconf->rtr_id.s_addr == 0)
652f65e64a0Sdenis                 xconf->rtr_id.s_addr = ospfd_conf->rtr_id.s_addr;
653f65e64a0Sdenis 
654f2e20b5eSjca 	/* Abort the reload if rtr_id changed */
655f2e20b5eSjca 	if (ospfd_conf->rtr_id.s_addr != xconf->rtr_id.s_addr) {
656ab2e5253Sremi 		log_warnx("router-id changed: restart required");
657f2e20b5eSjca 		return (-1);
658f2e20b5eSjca 	}
659f2e20b5eSjca 
660f28af201Sclaudio 	/* send config to childs */
661f28af201Sclaudio 	if (ospf_sendboth(IMSG_RECONF_CONF, xconf, sizeof(*xconf)) == -1)
662f28af201Sclaudio 		return (-1);
663f28af201Sclaudio 
664f28af201Sclaudio 	/* send interfaces */
665f28af201Sclaudio 	LIST_FOREACH(area, &xconf->area_list, entry) {
666f28af201Sclaudio 		if (ospf_sendboth(IMSG_RECONF_AREA, area, sizeof(*area)) == -1)
667f28af201Sclaudio 			return (-1);
668f28af201Sclaudio 
6696fa28760Sclaudio 		SIMPLEQ_FOREACH(r, &area->redist_list, entry) {
6706fa28760Sclaudio 			main_imsg_compose_rde(IMSG_RECONF_REDIST, 0, r,
6716fa28760Sclaudio 			    sizeof(*r));
6726fa28760Sclaudio 		}
673f28af201Sclaudio 		LIST_FOREACH(iface, &area->iface_list, entry) {
674f28af201Sclaudio 			if (ospf_sendboth(IMSG_RECONF_IFACE, iface,
675f28af201Sclaudio 			    sizeof(*iface)) == -1)
676f28af201Sclaudio 				return (-1);
677f28af201Sclaudio 			if (iface->auth_type == AUTH_CRYPT)
678f28af201Sclaudio 				if (md_list_send(&iface->auth_md_list,
6797b4c0c10Seric 				    iev_ospfe) == -1)
680f28af201Sclaudio 					return (-1);
681f28af201Sclaudio 		}
682f28af201Sclaudio 	}
683f28af201Sclaudio 
684f28af201Sclaudio 	if (ospf_sendboth(IMSG_RECONF_END, NULL, 0) == -1)
685f28af201Sclaudio 		return (-1);
686f28af201Sclaudio 
687f28af201Sclaudio 	merge_config(ospfd_conf, xconf);
688f28af201Sclaudio 	/* update redistribute lists */
689ad4152efSbenno 	kr_reload(ospfd_conf->redist_label_or_prefix);
690f28af201Sclaudio 	return (0);
691f28af201Sclaudio }
692f28af201Sclaudio 
693f28af201Sclaudio int
694f28af201Sclaudio ospf_sendboth(enum imsg_type type, void *buf, u_int16_t len)
695f28af201Sclaudio {
6967b4c0c10Seric 	if (imsg_compose_event(iev_ospfe, type, 0, 0, -1, buf, len) == -1)
697f28af201Sclaudio 		return (-1);
6987b4c0c10Seric 	if (imsg_compose_event(iev_rde, type, 0, 0, -1, buf, len) == -1)
699f28af201Sclaudio 		return (-1);
700f28af201Sclaudio 	return (0);
701f28af201Sclaudio }
702f28af201Sclaudio 
703f28af201Sclaudio void
704f28af201Sclaudio merge_config(struct ospfd_conf *conf, struct ospfd_conf *xconf)
705f28af201Sclaudio {
706f28af201Sclaudio 	struct area		*a, *xa, *na;
707f28af201Sclaudio 	struct iface		*iface;
708f28af201Sclaudio 	struct redistribute	*r;
7098456656cSclaudio 	int			 rchange = 0;
710f28af201Sclaudio 
7111891964aSclaudio 	conf->flags = xconf->flags;
712f28af201Sclaudio 	conf->spf_delay = xconf->spf_delay;
713f28af201Sclaudio 	conf->spf_hold_time = xconf->spf_hold_time;
7146fa28760Sclaudio 	if (SIMPLEQ_EMPTY(&conf->redist_list) !=
7156fa28760Sclaudio 	    SIMPLEQ_EMPTY(&xconf->redist_list))
7168456656cSclaudio 		rchange = 1;
717f28af201Sclaudio 	conf->rfc1583compat = xconf->rfc1583compat;
718ad4152efSbenno 	conf->redist_label_or_prefix = xconf->redist_label_or_prefix;
719f28af201Sclaudio 
720f28af201Sclaudio 	if (ospfd_process == PROC_MAIN) {
721f28af201Sclaudio 		/* main process does neither use areas nor interfaces */
722f28af201Sclaudio 		while ((r = SIMPLEQ_FIRST(&conf->redist_list)) != NULL) {
723f28af201Sclaudio 			SIMPLEQ_REMOVE_HEAD(&conf->redist_list, entry);
724f28af201Sclaudio 			free(r);
725f28af201Sclaudio 		}
726a12804d6Sbket 		SIMPLEQ_CONCAT(&conf->redist_list, &xconf->redist_list);
7274c260f66Sremi 
7284c260f66Sremi 		/* adjust FIB priority if changed */
7294c260f66Sremi 		if (conf->fib_priority != xconf->fib_priority) {
7304c260f66Sremi 			kr_fib_decouple();
7314c260f66Sremi 			kr_fib_update_prio(xconf->fib_priority);
7324c260f66Sremi 			conf->fib_priority = xconf->fib_priority;
7334c260f66Sremi 			kr_fib_couple();
7344c260f66Sremi 		}
7354c260f66Sremi 
736f28af201Sclaudio 		goto done;
737f28af201Sclaudio 	}
738f28af201Sclaudio 
739f28af201Sclaudio 	/* merge areas and interfaces */
740f28af201Sclaudio 	for (a = LIST_FIRST(&conf->area_list); a != NULL; a = na) {
741f28af201Sclaudio 		na = LIST_NEXT(a, entry);
742f28af201Sclaudio 		/* find deleted areas */
743f28af201Sclaudio 		if ((xa = area_find(xconf, a->id)) == NULL) {
744f28af201Sclaudio 			if (ospfd_process == PROC_OSPF_ENGINE) {
745f28af201Sclaudio 				LIST_FOREACH(iface, &a->iface_list, entry)
746f28af201Sclaudio 					if_fsm(iface, IF_EVT_DOWN);
747f28af201Sclaudio 			}
748f28af201Sclaudio 			LIST_REMOVE(a, entry);
749f28af201Sclaudio 			area_del(a);
750f28af201Sclaudio 		}
751f28af201Sclaudio 	}
752f28af201Sclaudio 
753f28af201Sclaudio 	for (xa = LIST_FIRST(&xconf->area_list); xa != NULL; xa = na) {
754f28af201Sclaudio 		na = LIST_NEXT(xa, entry);
755f28af201Sclaudio 		if ((a = area_find(conf, xa->id)) == NULL) {
756f28af201Sclaudio 			LIST_REMOVE(xa, entry);
757f28af201Sclaudio 			LIST_INSERT_HEAD(&conf->area_list, xa, entry);
758f28af201Sclaudio 			if (ospfd_process == PROC_OSPF_ENGINE) {
759f28af201Sclaudio 				/* start interfaces */
760fba2d3d0Sclaudio 				ospfe_demote_area(xa, 0);
761f28af201Sclaudio 				LIST_FOREACH(iface, &xa->iface_list, entry) {
762f28af201Sclaudio 					if_init(conf, iface);
763f28af201Sclaudio 					if (if_fsm(iface, IF_EVT_UP)) {
764f28af201Sclaudio 						log_debug("error starting "
765f28af201Sclaudio 						    "interface %s",
766f28af201Sclaudio 						    iface->name);
767f28af201Sclaudio 					}
768f28af201Sclaudio 				}
769f28af201Sclaudio 			}
770f28af201Sclaudio 			/* no need to merge interfaces */
771f28af201Sclaudio 			continue;
772f28af201Sclaudio 		}
773f28af201Sclaudio 		/*
774f28af201Sclaudio 		 * stub is not yet used but switching between stub and normal
775f28af201Sclaudio 		 * will be another painful job.
776f28af201Sclaudio 		 */
7776fa28760Sclaudio 		if (a->stub != xa->stub && ospfd_process == PROC_OSPF_ENGINE)
77898b447a7Sclaudio 			a->dirty = 1; /* force rtr LSA update */
7796fa28760Sclaudio 		if (xa->stub && ospfd_process == PROC_RDE_ENGINE) {
7806fa28760Sclaudio 			while ((r = SIMPLEQ_FIRST(&a->redist_list)) != NULL) {
7816fa28760Sclaudio 				SIMPLEQ_REMOVE_HEAD(&a->redist_list, entry);
7826fa28760Sclaudio 				free(r);
7836fa28760Sclaudio 			}
7846fa28760Sclaudio 
785a12804d6Sbket 			SIMPLEQ_CONCAT(&a->redist_list, &xa->redist_list);
7866fa28760Sclaudio 		}
78798b447a7Sclaudio 
788f28af201Sclaudio 		a->stub = xa->stub;
789f28af201Sclaudio 		a->stub_default_cost = xa->stub_default_cost;
7903a0d6b5fSclaudio 		if (ospfd_process == PROC_RDE_ENGINE)
791f28af201Sclaudio 			a->dirty = 1; /* force SPF tree recalculation */
792f28af201Sclaudio 
793f28af201Sclaudio 		/* merge interfaces */
7943a0d6b5fSclaudio 		if (merge_interfaces(a, xa) &&
7953a0d6b5fSclaudio 		    ospfd_process == PROC_OSPF_ENGINE)
7963a0d6b5fSclaudio 			a->dirty = 1; /* force rtr LSA update */
797f28af201Sclaudio 	}
798f28af201Sclaudio 
799f28af201Sclaudio 	if (ospfd_process == PROC_OSPF_ENGINE) {
800f28af201Sclaudio 		LIST_FOREACH(a, &conf->area_list, entry) {
801f28af201Sclaudio 			LIST_FOREACH(iface, &a->iface_list, entry) {
802f28af201Sclaudio 				if (iface->state == IF_STA_NEW) {
803f28af201Sclaudio 					iface->state = IF_STA_DOWN;
804f28af201Sclaudio 					if_init(conf, iface);
805f28af201Sclaudio 					if (if_fsm(iface, IF_EVT_UP)) {
806f28af201Sclaudio 						log_debug("error starting "
807f28af201Sclaudio 						    "interface %s",
808f28af201Sclaudio 						    iface->name);
809f28af201Sclaudio 					}
810f28af201Sclaudio 				}
811f28af201Sclaudio 			}
8128456656cSclaudio 			if (a->dirty || rchange) {
8133a0d6b5fSclaudio 				a->dirty = 0;
8143a0d6b5fSclaudio 				orig_rtr_lsa(a);
8153a0d6b5fSclaudio 			}
816f28af201Sclaudio 		}
817f28af201Sclaudio 	}
8186fa28760Sclaudio 	if (ospfd_process == PROC_RDE_ENGINE) {
8196fa28760Sclaudio 		LIST_FOREACH(a, &conf->area_list, entry) {
8206fa28760Sclaudio 			if (a->dirty) {
8216fa28760Sclaudio 				start_spf_timer();
8226fa28760Sclaudio 				break;
8236fa28760Sclaudio 			}
8246fa28760Sclaudio 		}
8256fa28760Sclaudio 	}
826f28af201Sclaudio 
827f28af201Sclaudio done:
828f28af201Sclaudio 	while ((a = LIST_FIRST(&xconf->area_list)) != NULL) {
829f28af201Sclaudio 		LIST_REMOVE(a, entry);
830f28af201Sclaudio 		area_del(a);
831f28af201Sclaudio 	}
832f28af201Sclaudio 	free(xconf);
833f28af201Sclaudio }
834f28af201Sclaudio 
8353a0d6b5fSclaudio int
836f28af201Sclaudio merge_interfaces(struct area *a, struct area *xa)
837f28af201Sclaudio {
838f28af201Sclaudio 	struct iface	*i, *xi, *ni;
8393a0d6b5fSclaudio 	int		 dirty = 0;
840f28af201Sclaudio 
841f28af201Sclaudio 	/* problems:
842f28af201Sclaudio 	 * - new interfaces (easy)
8431eaf9454Sremi 	 * - deleted interfaces
844f28af201Sclaudio 	 * - changing passive (painful?)
845f28af201Sclaudio 	 */
846f28af201Sclaudio 	for (i = LIST_FIRST(&a->iface_list); i != NULL; i = ni) {
847f28af201Sclaudio 		ni = LIST_NEXT(i, entry);
848f28af201Sclaudio 		if (iface_lookup(xa, i) == NULL) {
849644f0a52Smichele 			log_debug("merge_interfaces: proc %d area %s removing "
85072c35befSnorby 			    "interface %s", ospfd_process, inet_ntoa(a->id),
85172c35befSnorby 			    i->name);
852f28af201Sclaudio 			if (ospfd_process == PROC_OSPF_ENGINE)
853f28af201Sclaudio 				if_fsm(i, IF_EVT_DOWN);
854d9d28784Sclaudio 			else if (ospfd_process == PROC_RDE_ENGINE)
855d9d28784Sclaudio 				rde_nbr_iface_del(i);
856f28af201Sclaudio 			LIST_REMOVE(i, entry);
857f28af201Sclaudio 			if_del(i);
8581eaf9454Sremi 			dirty = 1; /* force rtr LSA update */
859f28af201Sclaudio 		}
860f28af201Sclaudio 	}
861f28af201Sclaudio 
862f28af201Sclaudio 	for (xi = LIST_FIRST(&xa->iface_list); xi != NULL; xi = ni) {
863f28af201Sclaudio 		ni = LIST_NEXT(xi, entry);
864f28af201Sclaudio 		if ((i = iface_lookup(a, xi)) == NULL) {
865f28af201Sclaudio 			/* new interface but delay initialisation */
866644f0a52Smichele 			log_debug("merge_interfaces: proc %d area %s adding "
86772c35befSnorby 			    "interface %s", ospfd_process, inet_ntoa(a->id),
86872c35befSnorby 			    xi->name);
869f28af201Sclaudio 			LIST_REMOVE(xi, entry);
870f28af201Sclaudio 			LIST_INSERT_HEAD(&a->iface_list, xi, entry);
871f28af201Sclaudio 			xi->area = a;
872aa018143Sclaudio 			if (ospfd_process == PROC_OSPF_ENGINE)
873f28af201Sclaudio 				xi->state = IF_STA_NEW;
874f28af201Sclaudio 			continue;
875f28af201Sclaudio 		}
876644f0a52Smichele 		log_debug("merge_interfaces: proc %d area %s merging "
877644f0a52Smichele 		    "interface %s", ospfd_process, inet_ntoa(a->id), i->name);
878f28af201Sclaudio 		i->dst = xi->dst;
879f28af201Sclaudio 		i->abr_id = xi->abr_id;
880f28af201Sclaudio 		i->baudrate = xi->baudrate;
881f28af201Sclaudio 		i->dead_interval = xi->dead_interval;
882f28af201Sclaudio 		i->mtu = xi->mtu;
883f28af201Sclaudio 		i->transmit_delay = xi->transmit_delay;
884f28af201Sclaudio 		i->hello_interval = xi->hello_interval;
885f28af201Sclaudio 		i->rxmt_interval = xi->rxmt_interval;
8863a0d6b5fSclaudio 		if (i->metric != xi->metric)
8873a0d6b5fSclaudio 			dirty = 1;
888f28af201Sclaudio 		i->metric = xi->metric;
889f28af201Sclaudio 		i->priority = xi->priority;
890783ec83fSclaudio 		if (i->self)
891783ec83fSclaudio 			i->self->priority = i->priority;
892f28af201Sclaudio 		i->flags = xi->flags; /* needed? */
89318ffdd94Sstsp 		i->if_type = xi->if_type; /* needed? */
894f28af201Sclaudio 		i->linkstate = xi->linkstate; /* needed? */
895f28af201Sclaudio 
896f28af201Sclaudio 		i->auth_type = xi->auth_type;
897a36fe386Sclaudio 		strncpy(i->auth_key, xi->auth_key, MAX_SIMPLE_AUTH_LEN);
898f28af201Sclaudio 		md_list_clr(&i->auth_md_list);
899f28af201Sclaudio 		md_list_copy(&i->auth_md_list, &xi->auth_md_list);
900f28af201Sclaudio 
901a431dab5Sremi 		strlcpy(i->dependon, xi->dependon,
902a431dab5Sremi 		        sizeof(i->dependon));
903a431dab5Sremi 		i->depend_ok = xi->depend_ok;
904a431dab5Sremi 
905f28af201Sclaudio 		if (i->passive != xi->passive) {
906f28af201Sclaudio 			/* need to restart interface to cope with this change */
907f28af201Sclaudio 			if (ospfd_process == PROC_OSPF_ENGINE)
908f28af201Sclaudio 				if_fsm(i, IF_EVT_DOWN);
909f28af201Sclaudio 			i->passive = xi->passive;
910f28af201Sclaudio 			if (ospfd_process == PROC_OSPF_ENGINE)
911f28af201Sclaudio 				if_fsm(i, IF_EVT_UP);
912f28af201Sclaudio 		}
913ac149fe2Sremi 
91409e8f780Sremi 		if (i->type != xi->type) {
915ef209401Sremi 			/* restart interface to enable or disable DR election */
916ef209401Sremi 			if (ospfd_process == PROC_OSPF_ENGINE)
917ef209401Sremi 				if_fsm(i, IF_EVT_DOWN);
91809e8f780Sremi 			i->type = xi->type;
919ef209401Sremi 			if (ospfd_process == PROC_OSPF_ENGINE)
920ef209401Sremi 				if_fsm(i, IF_EVT_UP);
921ef209401Sremi 		}
922f28af201Sclaudio 	}
9233a0d6b5fSclaudio 	return (dirty);
924f28af201Sclaudio }
925f28af201Sclaudio 
926f28af201Sclaudio struct iface *
927f28af201Sclaudio iface_lookup(struct area *area, struct iface *iface)
928f28af201Sclaudio {
929f28af201Sclaudio 	struct iface	*i;
930f28af201Sclaudio 
931f28af201Sclaudio 	LIST_FOREACH(i, &area->iface_list, entry)
932783ec83fSclaudio 		if (i->ifindex == iface->ifindex &&
933783ec83fSclaudio 		    i->addr.s_addr == iface->addr.s_addr &&
934783ec83fSclaudio 		    i->mask.s_addr == iface->mask.s_addr)
935f28af201Sclaudio 			return (i);
936f28af201Sclaudio 	return (NULL);
937f28af201Sclaudio }
938ac149fe2Sremi 
939ac149fe2Sremi int
940ac149fe2Sremi ifstate_is_up(struct kif *kif)
941ac149fe2Sremi {
942ac149fe2Sremi 	if (!(kif->flags & IFF_UP))
943ac149fe2Sremi 		return (0);
944ac149fe2Sremi 	if (kif->if_type == IFT_CARP &&
945ac149fe2Sremi 	    kif->link_state == LINK_STATE_UNKNOWN)
946ac149fe2Sremi 		return (0);
947ac149fe2Sremi 	return LINK_STATE_IS_UP(kif->link_state);
948ac149fe2Sremi }
949