config.c revision 1.95 
1/*	$OpenBSD: config.c,v 1.95 2024/01/17 08:25:02 claudio Exp $	*/
2
3/*
4 * Copyright (c) 2019 Tobias Heider <tobias.heider@stusta.de>
5 * Copyright (c) 2010-2013 Reyk Floeter <reyk@openbsd.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20#include <sys/queue.h>
21#include <sys/socket.h>
22#include <sys/uio.h>
23
24#include <stdlib.h>
25#include <stdio.h>
26#include <unistd.h>
27#include <string.h>
28#include <signal.h>
29#include <errno.h>
30#include <err.h>
31#include <event.h>
32
33#include <openssl/evp.h>
34#include <openssl/pem.h>
35
36#include "iked.h"
37#include "ikev2.h"
38
39struct iked_sa *
40config_new_sa(struct iked *env, int initiator)
41{
42	struct iked_sa	*sa;
43
44	if ((sa = calloc(1, sizeof(*sa))) == NULL)
45		return (NULL);
46
47	TAILQ_INIT(&sa->sa_proposals);
48	TAILQ_INIT(&sa->sa_childsas);
49	TAILQ_INIT(&sa->sa_flows);
50	TAILQ_INIT(&sa->sa_requests);
51	TAILQ_INIT(&sa->sa_responses);
52	sa->sa_hdr.sh_initiator = initiator;
53	sa->sa_type = IKED_SATYPE_LOCAL;
54
55	if (initiator)
56		sa->sa_hdr.sh_ispi = config_getspi();
57	else
58		sa->sa_hdr.sh_rspi = config_getspi();
59
60	gettimeofday(&sa->sa_timecreated, NULL);
61	memcpy(&sa->sa_timeused, &sa->sa_timecreated, sizeof(sa->sa_timeused));
62
63	ikestat_inc(env, ikes_sa_created);
64	return (sa);
65}
66
67uint64_t
68config_getspi(void)
69{
70	uint64_t	 spi;
71
72	do {
73		arc4random_buf(&spi, sizeof spi);
74	} while (spi == 0);
75
76	return (spi);
77}
78
79void
80config_free_kex(struct iked_kex *kex)
81{
82	if (kex == NULL)
83		return;
84
85	ibuf_free(kex->kex_inonce);
86	ibuf_free(kex->kex_rnonce);
87
88	group_free(kex->kex_dhgroup);
89	ibuf_free(kex->kex_dhiexchange);
90	ibuf_free(kex->kex_dhrexchange);
91
92	free(kex);
93}
94
95void
96config_free_fragments(struct iked_frag *frag)
97{
98	size_t i;
99
100	if (frag && frag->frag_arr) {
101		for (i = 0; i < frag->frag_total; i++) {
102			if (frag->frag_arr[i] != NULL)
103				free(frag->frag_arr[i]->frag_data);
104			free(frag->frag_arr[i]);
105		}
106		free(frag->frag_arr);
107		bzero(frag, sizeof(struct iked_frag));
108	}
109}
110
111void
112config_free_sa(struct iked *env, struct iked_sa *sa)
113{
114	int i;
115
116	timer_del(env, &sa->sa_timer);
117	timer_del(env, &sa->sa_keepalive);
118	timer_del(env, &sa->sa_rekey);
119
120	config_free_fragments(&sa->sa_fragments);
121	config_free_proposals(&sa->sa_proposals, 0);
122	config_free_childsas(env, &sa->sa_childsas, NULL, NULL);
123	sa_configure_iface(env, sa, 0);
124	sa_free_flows(env, &sa->sa_flows);
125
126	if (sa->sa_addrpool) {
127		(void)RB_REMOVE(iked_addrpool, &env->sc_addrpool, sa);
128		free(sa->sa_addrpool);
129	}
130	if (sa->sa_addrpool6) {
131		(void)RB_REMOVE(iked_addrpool6, &env->sc_addrpool6, sa);
132		free(sa->sa_addrpool6);
133	}
134
135	if (sa->sa_policy) {
136		TAILQ_REMOVE(&sa->sa_policy->pol_sapeers, sa, sa_peer_entry);
137		policy_unref(env, sa->sa_policy);
138	}
139
140	ikev2_msg_flushqueue(env, &sa->sa_requests);
141	ikev2_msg_flushqueue(env, &sa->sa_responses);
142
143	ibuf_free(sa->sa_inonce);
144	ibuf_free(sa->sa_rnonce);
145
146	group_free(sa->sa_dhgroup);
147	ibuf_free(sa->sa_dhiexchange);
148	ibuf_free(sa->sa_dhrexchange);
149
150	ibuf_free(sa->sa_simult);
151
152	hash_free(sa->sa_prf);
153	hash_free(sa->sa_integr);
154	cipher_free(sa->sa_encr);
155
156	ibuf_free(sa->sa_key_d);
157	ibuf_free(sa->sa_key_iauth);
158	ibuf_free(sa->sa_key_rauth);
159	ibuf_free(sa->sa_key_iencr);
160	ibuf_free(sa->sa_key_rencr);
161	ibuf_free(sa->sa_key_iprf);
162	ibuf_free(sa->sa_key_rprf);
163
164	ibuf_free(sa->sa_1stmsg);
165	ibuf_free(sa->sa_2ndmsg);
166
167	ibuf_free(sa->sa_iid.id_buf);
168	ibuf_free(sa->sa_rid.id_buf);
169	ibuf_free(sa->sa_icert.id_buf);
170	ibuf_free(sa->sa_rcert.id_buf);
171	for (i = 0; i < IKED_SCERT_MAX; i++)
172		ibuf_free(sa->sa_scert[i].id_buf);
173	ibuf_free(sa->sa_localauth.id_buf);
174	ibuf_free(sa->sa_peerauth.id_buf);
175
176	ibuf_free(sa->sa_eap.id_buf);
177	free(sa->sa_eapid);
178	ibuf_free(sa->sa_eapmsk);
179
180	free(sa->sa_cp_addr);
181	free(sa->sa_cp_addr6);
182	free(sa->sa_cp_dns);
183
184	free(sa->sa_tag);
185
186	if (sa->sa_state == IKEV2_STATE_ESTABLISHED)
187		ikestat_dec(env, ikes_sa_established_current);
188	ikestat_inc(env, ikes_sa_removed);
189
190	free(sa);
191}
192
193struct iked_policy *
194config_new_policy(struct iked *env)
195{
196	struct iked_policy	*pol;
197
198	if ((pol = calloc(1, sizeof(*pol))) == NULL)
199		return (NULL);
200
201	/* XXX caller does this again */
202	TAILQ_INIT(&pol->pol_proposals);
203	TAILQ_INIT(&pol->pol_sapeers);
204	TAILQ_INIT(&pol->pol_tssrc);
205	TAILQ_INIT(&pol->pol_tsdst);
206	RB_INIT(&pol->pol_flows);
207
208	return (pol);
209}
210
211void
212config_free_policy(struct iked *env, struct iked_policy *pol)
213{
214	struct iked_sa		*sa;
215	struct iked_ts	*tsi;
216
217	if (pol->pol_flags & IKED_POLICY_REFCNT)
218		goto remove;
219
220	/*
221	 * Remove policy from the sc_policies list, but increment
222	 * refcount for every SA linked for the policy.
223	 */
224	pol->pol_flags |= IKED_POLICY_REFCNT;
225
226	TAILQ_REMOVE(&env->sc_policies, pol, pol_entry);
227
228	TAILQ_FOREACH(sa, &pol->pol_sapeers, sa_peer_entry) {
229		if (sa->sa_policy == pol)
230			policy_ref(env, pol);
231		else
232			log_warnx("%s: ERROR: sa_policy %p != pol %p",
233			    __func__, sa->sa_policy, pol);
234	}
235
236	if (pol->pol_refcnt)
237		return;
238
239 remove:
240	while ((tsi = TAILQ_FIRST(&pol->pol_tssrc))) {
241		TAILQ_REMOVE(&pol->pol_tssrc, tsi, ts_entry);
242		free(tsi);
243	}
244	while ((tsi = TAILQ_FIRST(&pol->pol_tsdst))) {
245		TAILQ_REMOVE(&pol->pol_tsdst, tsi, ts_entry);
246		free(tsi);
247	}
248	config_free_proposals(&pol->pol_proposals, 0);
249	config_free_flows(env, &pol->pol_flows);
250	free(pol);
251}
252
253struct iked_proposal *
254config_add_proposal(struct iked_proposals *head, unsigned int id,
255    unsigned int proto)
256{
257	struct iked_proposal	*pp;
258
259	TAILQ_FOREACH(pp, head, prop_entry) {
260		if (pp->prop_protoid == proto &&
261		    pp->prop_id == id)
262			return (pp);
263	}
264
265	if ((pp = calloc(1, sizeof(*pp))) == NULL)
266		return (NULL);
267
268	pp->prop_protoid = proto;
269	pp->prop_id = id;
270
271	TAILQ_INSERT_TAIL(head, pp, prop_entry);
272
273	return (pp);
274}
275
276void
277config_free_proposal(struct iked_proposals *head, struct iked_proposal *prop)
278{
279	TAILQ_REMOVE(head, prop, prop_entry);
280	if (prop->prop_nxforms)
281		free(prop->prop_xforms);
282	free(prop);
283}
284
285void
286config_free_proposals(struct iked_proposals *head, unsigned int proto)
287{
288	struct iked_proposal	*prop, *proptmp;
289
290	TAILQ_FOREACH_SAFE(prop, head, prop_entry, proptmp) {
291		/* Free any proposal or only selected SA proto */
292		if (proto != 0 && prop->prop_protoid != proto)
293			continue;
294
295		log_debug("%s: free %p", __func__, prop);
296
297		config_free_proposal(head, prop);
298	}
299}
300
301void
302config_free_flows(struct iked *env, struct iked_flows *head)
303{
304	struct iked_flow	*flow;
305
306	while ((flow = RB_MIN(iked_flows, head))) {
307		log_debug("%s: free %p", __func__, flow);
308		RB_REMOVE(iked_flows, head, flow);
309		flow_free(flow);
310	}
311}
312
313void
314config_free_childsas(struct iked *env, struct iked_childsas *head,
315    struct iked_spi *peerspi, struct iked_spi *localspi)
316{
317	struct iked_childsa	*csa, *csatmp, *ipcomp;
318
319	if (localspi != NULL)
320		bzero(localspi, sizeof(*localspi));
321
322	TAILQ_FOREACH_SAFE(csa, head, csa_entry, csatmp) {
323		if (peerspi != NULL) {
324			/* Only delete matching peer SPIs */
325			if (peerspi->spi != csa->csa_peerspi)
326				continue;
327
328			/* Store assigned local SPI */
329			if (localspi != NULL && localspi->spi == 0)
330				memcpy(localspi, &csa->csa_spi,
331				    sizeof(*localspi));
332		}
333		log_debug("%s: free %p", __func__, csa);
334
335		TAILQ_REMOVE(head, csa, csa_entry);
336		if (csa->csa_loaded) {
337			RB_REMOVE(iked_activesas, &env->sc_activesas, csa);
338			(void)pfkey_sa_delete(env, csa);
339		}
340		if ((ipcomp = csa->csa_bundled) != NULL) {
341			log_debug("%s: free IPCOMP %p", __func__, ipcomp);
342			if (ipcomp->csa_loaded)
343				(void)pfkey_sa_delete(env, ipcomp);
344			childsa_free(ipcomp);
345		}
346		childsa_free(csa);
347		ikestat_inc(env, ikes_csa_removed);
348	}
349}
350
351int
352config_add_transform(struct iked_proposal *prop, unsigned int type,
353    unsigned int id, unsigned int length, unsigned int keylength)
354{
355	struct iked_transform	*xform;
356	struct iked_constmap	*map = NULL;
357	int			 score = 1;
358	unsigned int		 i;
359
360	switch (type) {
361	case IKEV2_XFORMTYPE_ENCR:
362		map = ikev2_xformencr_map;
363		break;
364	case IKEV2_XFORMTYPE_PRF:
365		map = ikev2_xformprf_map;
366		break;
367	case IKEV2_XFORMTYPE_INTEGR:
368		map = ikev2_xformauth_map;
369		break;
370	case IKEV2_XFORMTYPE_DH:
371		map = ikev2_xformdh_map;
372		break;
373	case IKEV2_XFORMTYPE_ESN:
374		map = ikev2_xformesn_map;
375		break;
376	default:
377		log_debug("%s: invalid transform type %d", __func__, type);
378		return (-2);
379	}
380
381	for (i = 0; i < prop->prop_nxforms; i++) {
382		xform = prop->prop_xforms + i;
383		if (xform->xform_type == type &&
384		    xform->xform_id == id &&
385		    xform->xform_length == length)
386			return (0);
387	}
388
389	for (i = 0; i < prop->prop_nxforms; i++) {
390		xform = prop->prop_xforms + i;
391		if (xform->xform_type == type) {
392			switch (type) {
393			case IKEV2_XFORMTYPE_ENCR:
394			case IKEV2_XFORMTYPE_INTEGR:
395				score += 3;
396				break;
397			case IKEV2_XFORMTYPE_DH:
398				score += 2;
399				break;
400			default:
401				score += 1;
402				break;
403			}
404		}
405	}
406
407	if ((xform = reallocarray(prop->prop_xforms,
408	    prop->prop_nxforms + 1, sizeof(*xform))) == NULL) {
409		return (-1);
410	}
411
412	prop->prop_xforms = xform;
413	xform = prop->prop_xforms + prop->prop_nxforms++;
414	bzero(xform, sizeof(*xform));
415
416	xform->xform_type = type;
417	xform->xform_id = id;
418	xform->xform_length = length;
419	xform->xform_keylength = keylength;
420	xform->xform_score = score;
421	xform->xform_map = map;
422
423	return (0);
424}
425
426struct iked_transform *
427config_findtransform_ext(struct iked_proposals *props, uint8_t type, int id,
428    unsigned int proto)
429{
430	struct iked_proposal	*prop;
431	struct iked_transform	*xform;
432	unsigned int		 i;
433
434	/* Search of the first transform with the desired type */
435	TAILQ_FOREACH(prop, props, prop_entry) {
436		/* Find any proposal or only selected SA proto */
437		if (proto != 0 && prop->prop_protoid != proto)
438			continue;
439		for (i = 0; i < prop->prop_nxforms; i++) {
440			xform = prop->prop_xforms + i;
441			/* optional lookup of specific transform */
442			if (id >= 0 && xform->xform_id != id)
443				continue;
444			if (xform->xform_type == type)
445				return (xform);
446		}
447	}
448
449	return (NULL);
450}
451
452struct iked_transform *
453config_findtransform(struct iked_proposals *props, uint8_t type,
454    unsigned int proto)
455{
456	return config_findtransform_ext(props, type, -1, proto);
457}
458
459struct iked_user *
460config_new_user(struct iked *env, struct iked_user *new)
461{
462	struct iked_user	*usr, *old;
463
464	if ((usr = calloc(1, sizeof(*usr))) == NULL)
465		return (NULL);
466
467	memcpy(usr, new, sizeof(*usr));
468
469	if ((old = RB_INSERT(iked_users, &env->sc_users, usr)) != NULL) {
470		/* Update the password of an existing user*/
471		memcpy(old->usr_pass, new->usr_pass, IKED_PASSWORD_SIZE);
472
473		log_debug("%s: updating user %s", __func__, usr->usr_name);
474		freezero(usr, sizeof *usr);
475
476		return (old);
477	}
478
479	log_debug("%s: inserting new user %s", __func__, usr->usr_name);
480	return (usr);
481}
482
483/*
484 * Inter-process communication of configuration items.
485 */
486
487int
488config_setcoupled(struct iked *env, unsigned int couple)
489{
490	unsigned int	 type;
491
492	type = couple ? IMSG_CTL_COUPLE : IMSG_CTL_DECOUPLE;
493	proc_compose(&env->sc_ps, PROC_IKEV2, type, NULL, 0);
494
495	return (0);
496}
497
498int
499config_getcoupled(struct iked *env, unsigned int type)
500{
501	return (pfkey_couple(env, &env->sc_sas,
502	    type == IMSG_CTL_COUPLE ? 1 : 0));
503}
504
505int
506config_setmode(struct iked *env, unsigned int passive)
507{
508	unsigned int	 type;
509
510	type = passive ? IMSG_CTL_PASSIVE : IMSG_CTL_ACTIVE;
511	proc_compose(&env->sc_ps, PROC_IKEV2, type, NULL, 0);
512
513	return (0);
514}
515
516int
517config_getmode(struct iked *env, unsigned int type)
518{
519	uint8_t		 old;
520	unsigned char	*mode[] = { "active", "passive" };
521
522	old = env->sc_passive ? 1 : 0;
523	env->sc_passive = type == IMSG_CTL_PASSIVE ? 1 : 0;
524
525	if (old == env->sc_passive)
526		return (0);
527
528	log_debug("%s: mode %s -> %s", __func__,
529	    mode[old], mode[env->sc_passive]);
530
531	return (0);
532}
533
534int
535config_setreset(struct iked *env, unsigned int mode, enum privsep_procid id)
536{
537	proc_compose(&env->sc_ps, id, IMSG_CTL_RESET, &mode, sizeof(mode));
538	return (0);
539}
540
541int
542config_getreset(struct iked *env, struct imsg *imsg)
543{
544	unsigned int		 mode;
545
546	IMSG_SIZE_CHECK(imsg, &mode);
547	memcpy(&mode, imsg->data, sizeof(mode));
548
549	return (config_doreset(env, mode));
550}
551
552int
553config_doreset(struct iked *env, unsigned int mode)
554{
555	struct iked_policy	*pol, *poltmp;
556	struct iked_sa		*sa;
557	struct iked_user	*usr;
558
559	if (mode == RESET_ALL || mode == RESET_POLICY) {
560		log_debug("%s: flushing policies", __func__);
561		TAILQ_FOREACH_SAFE(pol, &env->sc_policies, pol_entry, poltmp) {
562			config_free_policy(env, pol);
563		}
564	}
565
566	if (mode == RESET_ALL || mode == RESET_SA) {
567		log_debug("%s: flushing SAs", __func__);
568		while ((sa = RB_MIN(iked_sas, &env->sc_sas))) {
569			/* for RESET_SA we try send a DELETE */
570			if (mode == RESET_ALL ||
571			    ikev2_ike_sa_delete(env, sa) != 0) {
572				RB_REMOVE(iked_sas, &env->sc_sas, sa);
573				if (sa->sa_dstid_entry_valid)
574					sa_dstid_remove(env, sa);
575				config_free_sa(env, sa);
576			}
577		}
578	}
579
580	if (mode == RESET_ALL || mode == RESET_USER) {
581		log_debug("%s: flushing users", __func__);
582		while ((usr = RB_MIN(iked_users, &env->sc_users))) {
583			RB_REMOVE(iked_users, &env->sc_users, usr);
584			free(usr);
585		}
586	}
587
588	return (0);
589}
590
591/*
592 * The first call of this function sets the UDP socket for IKEv2.
593 * The second call is optional, setting the UDP socket used for NAT-T.
594 */
595int
596config_setsocket(struct iked *env, struct sockaddr_storage *ss,
597    in_port_t port, enum privsep_procid id)
598{
599	int	 s;
600
601	if ((s = udp_bind((struct sockaddr *)ss, port)) == -1)
602		return (-1);
603	proc_compose_imsg(&env->sc_ps, id, -1,
604	    IMSG_UDP_SOCKET, -1, s, ss, sizeof(*ss));
605	return (0);
606}
607
608int
609config_getsocket(struct iked *env, struct imsg *imsg,
610    void (*cb)(int, short, void *))
611{
612	struct iked_socket	*sock, **sock0 = NULL, **sock1 = NULL;
613
614	if ((sock = calloc(1, sizeof(*sock))) == NULL)
615		fatal("config_getsocket: calloc");
616
617	IMSG_SIZE_CHECK(imsg, &sock->sock_addr);
618
619	memcpy(&sock->sock_addr, imsg->data, sizeof(sock->sock_addr));
620	sock->sock_fd = imsg_get_fd(imsg);
621	sock->sock_env = env;
622
623	log_debug("%s: received socket fd %d", __func__, sock->sock_fd);
624
625	switch (sock->sock_addr.ss_family) {
626	case AF_INET:
627		sock0 = &env->sc_sock4[0];
628		sock1 = &env->sc_sock4[1];
629		break;
630	case AF_INET6:
631		sock0 = &env->sc_sock6[0];
632		sock1 = &env->sc_sock6[1];
633		break;
634	default:
635		fatal("config_getsocket: socket af: %u",
636		    sock->sock_addr.ss_family);
637		/* NOTREACHED */
638	}
639	if (*sock0 == NULL)
640		*sock0 = sock;
641	else if (*sock1 == NULL)
642		*sock1 = sock;
643	else
644		fatalx("%s: too many call", __func__);
645
646	event_set(&sock->sock_ev, sock->sock_fd,
647	    EV_READ|EV_PERSIST, cb, sock);
648	event_add(&sock->sock_ev, NULL);
649
650	return (0);
651}
652
653int
654config_setpfkey(struct iked *env)
655{
656	int	 s;
657
658	if ((s = pfkey_socket(env)) == -1)
659		return (-1);
660	proc_compose_imsg(&env->sc_ps, PROC_IKEV2, -1,
661	    IMSG_PFKEY_SOCKET, -1, s, NULL, 0);
662	return (0);
663}
664
665int
666config_getpfkey(struct iked *env, struct imsg *imsg)
667{
668	int fd = imsg_get_fd(imsg);
669
670	log_debug("%s: received pfkey fd %d", __func__, fd);
671	pfkey_init(env, fd);
672	return (0);
673}
674
675int
676config_setuser(struct iked *env, struct iked_user *usr, enum privsep_procid id)
677{
678	if (env->sc_opts & IKED_OPT_NOACTION) {
679		print_user(usr);
680		return (0);
681	}
682
683	proc_compose(&env->sc_ps, id, IMSG_CFG_USER, usr, sizeof(*usr));
684	return (0);
685}
686
687int
688config_getuser(struct iked *env, struct imsg *imsg)
689{
690	struct iked_user	 usr;
691	int			 ret = -1;
692
693	IMSG_SIZE_CHECK(imsg, &usr);
694	memcpy(&usr, imsg->data, sizeof(usr));
695
696	if (config_new_user(env, &usr) != NULL) {
697		print_user(&usr);
698		ret = 0;
699	}
700
701	explicit_bzero(&usr, sizeof(usr));
702	return (ret);
703}
704
705int
706config_setpolicy(struct iked *env, struct iked_policy *pol,
707    enum privsep_procid id)
708{
709	struct iked_proposal	*prop;
710	struct iked_transform	*xform;
711	size_t			 iovcnt, j, c = 0;
712	struct iovec		 iov[IOV_MAX];
713
714	iovcnt = 1;
715	TAILQ_FOREACH(prop, &pol->pol_proposals, prop_entry) {
716		iovcnt += prop->prop_nxforms + 1;
717	}
718
719	if (iovcnt > IOV_MAX) {
720		log_warn("%s: too many proposals", __func__);
721		return (-1);
722	}
723
724	iov[c].iov_base = pol;
725	iov[c++].iov_len = sizeof(*pol);
726
727	TAILQ_FOREACH(prop, &pol->pol_proposals, prop_entry) {
728		iov[c].iov_base = prop;
729		iov[c++].iov_len = sizeof(*prop);
730
731		for (j = 0; j < prop->prop_nxforms; j++) {
732			xform = prop->prop_xforms + j;
733
734			iov[c].iov_base = xform;
735			iov[c++].iov_len = sizeof(*xform);
736		}
737	}
738
739	print_policy(pol);
740
741	if (env->sc_opts & IKED_OPT_NOACTION)
742		return (0);
743
744	if (proc_composev(&env->sc_ps, id, IMSG_CFG_POLICY, iov,
745	    iovcnt) == -1) {
746		log_debug("%s: proc_composev failed", __func__);
747		return (-1);
748	}
749
750	return (0);
751}
752
753int
754config_setflow(struct iked *env, struct iked_policy *pol,
755    enum privsep_procid id)
756{
757	struct iked_flow	*flow;
758	struct iovec		 iov[2];
759
760	if (env->sc_opts & IKED_OPT_NOACTION)
761		return (0);
762
763	RB_FOREACH(flow, iked_flows, &pol->pol_flows) {
764		iov[0].iov_base = &pol->pol_id;
765		iov[0].iov_len = sizeof(pol->pol_id);
766		iov[1].iov_base = flow;
767		iov[1].iov_len = sizeof(*flow);
768
769		if (proc_composev(&env->sc_ps, id, IMSG_CFG_FLOW,
770		    iov, 2) == -1) {
771			log_debug("%s: proc_composev failed", __func__);
772			return (-1);
773		}
774	}
775
776	return (0);
777}
778
779int
780config_getpolicy(struct iked *env, struct imsg *imsg)
781{
782	struct iked_policy	*pol;
783	struct iked_proposal	 pp, *prop;
784	struct iked_transform	 xf;
785	off_t			 offset = 0;
786	unsigned int		 i, j;
787	uint8_t			*buf = (uint8_t *)imsg->data;
788
789	IMSG_SIZE_CHECK(imsg, pol);
790	log_debug("%s: received policy", __func__);
791
792	if ((pol = config_new_policy(NULL)) == NULL)
793		fatal("config_getpolicy: new policy");
794
795	memcpy(pol, buf, sizeof(*pol));
796	offset += sizeof(*pol);
797
798	TAILQ_INIT(&pol->pol_tssrc);
799	TAILQ_INIT(&pol->pol_tsdst);
800	TAILQ_INIT(&pol->pol_proposals);
801	TAILQ_INIT(&pol->pol_sapeers);
802	RB_INIT(&pol->pol_flows);
803
804	for (i = 0; i < pol->pol_nproposals; i++) {
805		memcpy(&pp, buf + offset, sizeof(pp));
806		offset += sizeof(pp);
807
808		if ((prop = config_add_proposal(&pol->pol_proposals,
809		    pp.prop_id, pp.prop_protoid)) == NULL)
810			fatal("config_getpolicy: add proposal");
811
812		for (j = 0; j < pp.prop_nxforms; j++) {
813			memcpy(&xf, buf + offset, sizeof(xf));
814			offset += sizeof(xf);
815
816			if (config_add_transform(prop, xf.xform_type,
817			    xf.xform_id, xf.xform_length,
818			    xf.xform_keylength) != 0)
819				fatal("config_getpolicy: add transform");
820		}
821	}
822
823	/* Flows are sent separately */
824	pol->pol_nflows = 0;
825
826	TAILQ_INSERT_TAIL(&env->sc_policies, pol, pol_entry);
827
828	if (pol->pol_flags & IKED_POLICY_DEFAULT) {
829		/* Only one default policy, just free/unref the old one */
830		if (env->sc_defaultcon != NULL)
831			config_free_policy(env, env->sc_defaultcon);
832		env->sc_defaultcon = pol;
833	}
834
835	return (0);
836}
837
838int
839config_getflow(struct iked *env, struct imsg *imsg)
840{
841	struct iked_policy	*pol;
842	struct iked_flow	*flow;
843	off_t			 offset = 0;
844	unsigned int		 id;
845	uint8_t			*buf = (uint8_t *)imsg->data;
846
847	if (IMSG_DATA_SIZE(imsg) < sizeof(id))
848		fatalx("bad length imsg received");
849
850	memcpy(&id, buf, sizeof(id));
851	offset += sizeof(id);
852
853	TAILQ_FOREACH(pol, &env->sc_policies, pol_entry) {
854		if (pol->pol_id == id)
855			break;
856	}
857	if (pol == NULL) {
858		log_warnx("%s: unknown policy %u", __func__, id);
859		return (-1);
860	}
861
862	if ((flow = calloc(1, sizeof(*flow))) == NULL)
863		fatal("config_getpolicy: new flow");
864
865	memcpy(flow, buf + offset, sizeof(*flow));
866
867	if (RB_INSERT(iked_flows, &pol->pol_flows, flow)) {
868		log_warnx("%s: received duplicate flow", __func__);
869		free(flow);
870		return (-1);
871	}
872	pol->pol_nflows++;
873
874	return (0);
875}
876
877int
878config_setcompile(struct iked *env, enum privsep_procid id)
879{
880	if (env->sc_opts & IKED_OPT_NOACTION)
881		return (0);
882
883	proc_compose(&env->sc_ps, id, IMSG_COMPILE, NULL, 0);
884	return (0);
885}
886
887int
888config_getcompile(struct iked *env)
889{
890	/*
891	 * Do any necessary steps after configuration, for now we
892	 * only need to compile the skip steps.
893	 */
894	policy_calc_skip_steps(&env->sc_policies);
895
896	log_debug("%s: compilation done", __func__);
897	return (0);
898}
899
900int
901config_setstatic(struct iked *env)
902{
903	proc_compose(&env->sc_ps, PROC_IKEV2, IMSG_CTL_STATIC,
904	    &env->sc_static, sizeof(env->sc_static));
905	proc_compose(&env->sc_ps, PROC_CERT, IMSG_CTL_STATIC,
906	    &env->sc_static, sizeof(env->sc_static));
907	return (0);
908}
909
910int
911config_getstatic(struct iked *env, struct imsg *imsg)
912{
913	IMSG_SIZE_CHECK(imsg, &env->sc_static);
914	memcpy(&env->sc_static, imsg->data, sizeof(env->sc_static));
915
916	log_debug("%s: dpd_check_interval %llu", __func__, env->sc_alive_timeout);
917	log_debug("%s: %senforcesingleikesa", __func__,
918	    env->sc_enforcesingleikesa ? "" : "no ");
919	log_debug("%s: %sfragmentation", __func__, env->sc_frag ? "" : "no ");
920	log_debug("%s: %smobike", __func__, env->sc_mobike ? "" : "no ");
921	log_debug("%s: nattport %u", __func__, env->sc_nattport);
922	log_debug("%s: %sstickyaddress", __func__,
923	    env->sc_stickyaddress ? "" : "no ");
924
925	ikev2_reset_alive_timer(env);
926
927	return (0);
928}
929
930int
931config_setocsp(struct iked *env)
932{
933	struct iovec		 iov[3];
934	int			 iovcnt = 0;
935
936	if (env->sc_opts & IKED_OPT_NOACTION)
937		return (0);
938
939	iov[0].iov_base = &env->sc_ocsp_tolerate;
940	iov[0].iov_len = sizeof(env->sc_ocsp_tolerate);
941	iovcnt++;
942	iov[1].iov_base = &env->sc_ocsp_maxage;
943	iov[1].iov_len = sizeof(env->sc_ocsp_maxage);
944	iovcnt++;
945	if (env->sc_ocsp_url) {
946		iov[2].iov_base = env->sc_ocsp_url;
947		iov[2].iov_len = strlen(env->sc_ocsp_url);
948		iovcnt++;
949	}
950	return (proc_composev(&env->sc_ps, PROC_CERT, IMSG_OCSP_CFG,
951	    iov, iovcnt));
952}
953
954int
955config_getocsp(struct iked *env, struct imsg *imsg)
956{
957	size_t		 have, need;
958	uint8_t		*ptr;
959
960	free(env->sc_ocsp_url);
961	ptr = (uint8_t *)imsg->data;
962	have = IMSG_DATA_SIZE(imsg);
963
964	/* get tolerate */
965	need = sizeof(env->sc_ocsp_tolerate);
966	if (have < need)
967		fatalx("bad 'tolerate' length imsg received");
968	memcpy(&env->sc_ocsp_tolerate, ptr, need);
969	ptr += need;
970	have -= need;
971
972	/* get maxage */
973	need = sizeof(env->sc_ocsp_maxage);
974	if (have < need)
975		fatalx("bad 'maxage' length imsg received");
976	memcpy(&env->sc_ocsp_maxage, ptr, need);
977	ptr += need;
978	have -= need;
979
980	/* get url */
981	if (have > 0)
982		env->sc_ocsp_url = get_string(ptr, have);
983	else
984		env->sc_ocsp_url = NULL;
985	log_debug("%s: ocsp_url %s tolerate %ld maxage %ld", __func__,
986	    env->sc_ocsp_url ? env->sc_ocsp_url : "none",
987	    env->sc_ocsp_tolerate, env->sc_ocsp_maxage);
988	return (0);
989}
990
991int
992config_setkeys(struct iked *env)
993{
994	FILE			*fp = NULL;
995	EVP_PKEY		*key = NULL;
996	struct iked_id		 privkey;
997	struct iked_id		 pubkey;
998	struct iovec		 iov[2];
999	int			 ret = -1;
1000
1001	memset(&privkey, 0, sizeof(privkey));
1002	memset(&pubkey, 0, sizeof(pubkey));
1003
1004	/* Read private key */
1005	if ((fp = fopen(IKED_PRIVKEY, "r")) == NULL) {
1006		log_warn("%s: failed to open private key", __func__);
1007		goto done;
1008	}
1009
1010	if ((key = PEM_read_PrivateKey(fp, NULL, NULL, NULL)) == NULL) {
1011		log_warnx("%s: failed to read private key", __func__);
1012		goto done;
1013	}
1014
1015	if (ca_privkey_serialize(key, &privkey) != 0) {
1016		log_warnx("%s: failed to serialize private key", __func__);
1017		goto done;
1018	}
1019	if (ca_pubkey_serialize(key, &pubkey) != 0) {
1020		log_warnx("%s: failed to serialize public key", __func__);
1021		goto done;
1022	}
1023
1024	iov[0].iov_base = &privkey;
1025	iov[0].iov_len = sizeof(privkey);
1026	iov[1].iov_base = ibuf_data(privkey.id_buf);
1027	iov[1].iov_len = ibuf_size(privkey.id_buf);
1028
1029	if (proc_composev(&env->sc_ps, PROC_CERT, IMSG_PRIVKEY, iov, 2) == -1) {
1030		log_warnx("%s: failed to send private key", __func__);
1031		goto done;
1032	}
1033
1034	iov[0].iov_base = &pubkey;
1035	iov[0].iov_len = sizeof(pubkey);
1036	iov[1].iov_base = ibuf_data(pubkey.id_buf);
1037	iov[1].iov_len = ibuf_size(pubkey.id_buf);
1038
1039	if (proc_composev(&env->sc_ps, PROC_CERT, IMSG_PUBKEY, iov, 2) == -1) {
1040		log_warnx("%s: failed to send public key", __func__);
1041		goto done;
1042	}
1043
1044	ret = 0;
1045 done:
1046	if (fp != NULL)
1047		fclose(fp);
1048
1049	ibuf_free(pubkey.id_buf);
1050	ibuf_free(privkey.id_buf);
1051	EVP_PKEY_free(key);
1052
1053	return (ret);
1054}
1055
1056int
1057config_getkey(struct iked *env, struct imsg *imsg)
1058{
1059	size_t		 len;
1060	struct iked_id	 id;
1061
1062	len = IMSG_DATA_SIZE(imsg);
1063	if (len <= sizeof(id))
1064		fatalx("%s: invalid key message", __func__);
1065
1066	memcpy(&id, imsg->data, sizeof(id));
1067	if ((id.id_buf = ibuf_new((uint8_t *)imsg->data + sizeof(id),
1068	    len - sizeof(id))) == NULL)
1069		fatalx("%s: failed to get key", __func__);
1070
1071	explicit_bzero(imsg->data, len);
1072	ca_getkey(&env->sc_ps, &id, imsg->hdr.type);
1073
1074	return (0);
1075}
1076