ike: Use proper hostname(s) when name resolution failed
[strongswan.git] / src / libcharon / sa / ike_sa.c
1 /*
2 * Copyright (C) 2006-2013 Tobias Brunner
3 * Copyright (C) 2006 Daniel Roethlisberger
4 * Copyright (C) 2005-2009 Martin Willi
5 * Copyright (C) 2005 Jan Hutter
6 * Hochschule fuer Technik Rapperswil
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 * for more details.
17 */
18
19 #include <string.h>
20 #include <sys/stat.h>
21 #include <errno.h>
22 #include <time.h>
23
24 #include "ike_sa.h"
25
26 #include <library.h>
27 #include <hydra.h>
28 #include <daemon.h>
29 #include <collections/array.h>
30 #include <utils/lexparser.h>
31 #include <processing/jobs/retransmit_job.h>
32 #include <processing/jobs/delete_ike_sa_job.h>
33 #include <processing/jobs/send_dpd_job.h>
34 #include <processing/jobs/send_keepalive_job.h>
35 #include <processing/jobs/rekey_ike_sa_job.h>
36 #include <processing/jobs/retry_initiate_job.h>
37 #include <sa/ikev2/tasks/ike_auth_lifetime.h>
38
39 #ifdef ME
40 #include <sa/ikev2/tasks/ike_me.h>
41 #include <processing/jobs/initiate_mediation_job.h>
42 #endif
43
44 ENUM(ike_sa_state_names, IKE_CREATED, IKE_DESTROYING,
45 "CREATED",
46 "CONNECTING",
47 "ESTABLISHED",
48 "PASSIVE",
49 "REKEYING",
50 "DELETING",
51 "DESTROYING",
52 );
53
54 typedef struct private_ike_sa_t private_ike_sa_t;
55 typedef struct attribute_entry_t attribute_entry_t;
56
57 /**
58 * Private data of an ike_sa_t object.
59 */
60 struct private_ike_sa_t {
61
62 /**
63 * Public members
64 */
65 ike_sa_t public;
66
67 /**
68 * Identifier for the current IKE_SA.
69 */
70 ike_sa_id_t *ike_sa_id;
71
72 /**
73 * IKE version of this SA.
74 */
75 ike_version_t version;
76
77 /**
78 * unique numerical ID for this IKE_SA.
79 */
80 u_int32_t unique_id;
81
82 /**
83 * Current state of the IKE_SA
84 */
85 ike_sa_state_t state;
86
87 /**
88 * IKE configuration used to set up this IKE_SA
89 */
90 ike_cfg_t *ike_cfg;
91
92 /**
93 * Peer and authentication information to establish IKE_SA.
94 */
95 peer_cfg_t *peer_cfg;
96
97 /**
98 * currently used authentication ruleset, local
99 */
100 auth_cfg_t *my_auth;
101
102 /**
103 * currently used authentication constraints, remote
104 */
105 auth_cfg_t *other_auth;
106
107 /**
108 * Array of completed local authentication rounds (as auth_cfg_t)
109 */
110 array_t *my_auths;
111
112 /**
113 * Array of completed remote authentication rounds (as auth_cfg_t)
114 */
115 array_t *other_auths;
116
117 /**
118 * Selected IKE proposal
119 */
120 proposal_t *proposal;
121
122 /**
123 * Juggles tasks to process messages
124 */
125 task_manager_t *task_manager;
126
127 /**
128 * Address of local host
129 */
130 host_t *my_host;
131
132 /**
133 * Address of remote host
134 */
135 host_t *other_host;
136
137 #ifdef ME
138 /**
139 * Are we mediation server
140 */
141 bool is_mediation_server;
142
143 /**
144 * Server reflexive host
145 */
146 host_t *server_reflexive_host;
147
148 /**
149 * Connect ID
150 */
151 chunk_t connect_id;
152 #endif /* ME */
153
154 /**
155 * Identification used for us
156 */
157 identification_t *my_id;
158
159 /**
160 * Identification used for other
161 */
162 identification_t *other_id;
163
164 /**
165 * set of extensions the peer supports
166 */
167 ike_extension_t extensions;
168
169 /**
170 * set of condition flags currently enabled for this IKE_SA
171 */
172 ike_condition_t conditions;
173
174 /**
175 * Array containing the child sa's of the current IKE_SA.
176 */
177 array_t *child_sas;
178
179 /**
180 * keymat of this IKE_SA
181 */
182 keymat_t *keymat;
183
184 /**
185 * Virtual IPs on local host
186 */
187 array_t *my_vips;
188
189 /**
190 * Virtual IPs on remote host
191 */
192 array_t *other_vips;
193
194 /**
195 * List of configuration attributes (attribute_entry_t)
196 */
197 array_t *attributes;
198
199 /**
200 * list of peer's addresses, additional ones transmitted via MOBIKE
201 */
202 array_t *peer_addresses;
203
204 /**
205 * previously value of received DESTINATION_IP hash
206 */
207 chunk_t nat_detection_dest;
208
209 /**
210 * number pending UPDATE_SA_ADDRESS (MOBIKE)
211 */
212 u_int32_t pending_updates;
213
214 /**
215 * NAT keep alive interval
216 */
217 u_int32_t keepalive_interval;
218
219 /**
220 * interval for retries during initiation (e.g. if DNS resolution failed),
221 * 0 to disable (default)
222 */
223 u_int32_t retry_initiate_interval;
224
225 /**
226 * TRUE if a retry_initiate_job has been queued
227 */
228 bool retry_initiate_queued;
229
230 /**
231 * Timestamps for this IKE_SA
232 */
233 u_int32_t stats[STAT_MAX];
234
235 /**
236 * how many times we have retried so far (keyingtries)
237 */
238 u_int32_t keyingtry;
239
240 /**
241 * local host address to be used for IKE, set via MIGRATE kernel message
242 */
243 host_t *local_host;
244
245 /**
246 * remote host address to be used for IKE, set via MIGRATE kernel message
247 */
248 host_t *remote_host;
249
250 /**
251 * Flush auth configs once established?
252 */
253 bool flush_auth_cfg;
254 };
255
256 /**
257 * Entry to maintain install configuration attributes during IKE_SA lifetime
258 */
259 struct attribute_entry_t {
260 /** handler used to install this attribute */
261 attribute_handler_t *handler;
262 /** attribute type */
263 configuration_attribute_type_t type;
264 /** attribute data */
265 chunk_t data;
266 };
267
268 /**
269 * get the time of the latest traffic processed by the kernel
270 */
271 static time_t get_use_time(private_ike_sa_t* this, bool inbound)
272 {
273 enumerator_t *enumerator;
274 child_sa_t *child_sa;
275 time_t use_time, current;
276
277 if (inbound)
278 {
279 use_time = this->stats[STAT_INBOUND];
280 }
281 else
282 {
283 use_time = this->stats[STAT_OUTBOUND];
284 }
285
286 enumerator = array_create_enumerator(this->child_sas);
287 while (enumerator->enumerate(enumerator, &child_sa))
288 {
289 child_sa->get_usestats(child_sa, inbound, &current, NULL, NULL);
290 use_time = max(use_time, current);
291 }
292 enumerator->destroy(enumerator);
293
294 return use_time;
295 }
296
297 METHOD(ike_sa_t, get_unique_id, u_int32_t,
298 private_ike_sa_t *this)
299 {
300 return this->unique_id;
301 }
302
303 METHOD(ike_sa_t, get_name, char*,
304 private_ike_sa_t *this)
305 {
306 if (this->peer_cfg)
307 {
308 return this->peer_cfg->get_name(this->peer_cfg);
309 }
310 return "(unnamed)";
311 }
312
313 METHOD(ike_sa_t, get_statistic, u_int32_t,
314 private_ike_sa_t *this, statistic_t kind)
315 {
316 if (kind < STAT_MAX)
317 {
318 return this->stats[kind];
319 }
320 return 0;
321 }
322
323 METHOD(ike_sa_t, set_statistic, void,
324 private_ike_sa_t *this, statistic_t kind, u_int32_t value)
325 {
326 if (kind < STAT_MAX)
327 {
328 this->stats[kind] = value;
329 }
330 }
331
332 METHOD(ike_sa_t, get_my_host, host_t*,
333 private_ike_sa_t *this)
334 {
335 return this->my_host;
336 }
337
338 METHOD(ike_sa_t, set_my_host, void,
339 private_ike_sa_t *this, host_t *me)
340 {
341 DESTROY_IF(this->my_host);
342 this->my_host = me;
343 }
344
345 METHOD(ike_sa_t, get_other_host, host_t*,
346 private_ike_sa_t *this)
347 {
348 return this->other_host;
349 }
350
351 METHOD(ike_sa_t, set_other_host, void,
352 private_ike_sa_t *this, host_t *other)
353 {
354 DESTROY_IF(this->other_host);
355 this->other_host = other;
356 }
357
358 METHOD(ike_sa_t, get_peer_cfg, peer_cfg_t*,
359 private_ike_sa_t *this)
360 {
361 return this->peer_cfg;
362 }
363
364 METHOD(ike_sa_t, set_peer_cfg, void,
365 private_ike_sa_t *this, peer_cfg_t *peer_cfg)
366 {
367 peer_cfg->get_ref(peer_cfg);
368 DESTROY_IF(this->peer_cfg);
369 this->peer_cfg = peer_cfg;
370
371 if (this->ike_cfg == NULL)
372 {
373 this->ike_cfg = peer_cfg->get_ike_cfg(peer_cfg);
374 this->ike_cfg->get_ref(this->ike_cfg);
375 }
376 }
377
378 METHOD(ike_sa_t, get_auth_cfg, auth_cfg_t*,
379 private_ike_sa_t *this, bool local)
380 {
381 if (local)
382 {
383 return this->my_auth;
384 }
385 return this->other_auth;
386 }
387
388 METHOD(ike_sa_t, add_auth_cfg, void,
389 private_ike_sa_t *this, bool local, auth_cfg_t *cfg)
390 {
391 if (local)
392 {
393 array_insert(this->my_auths, ARRAY_TAIL, cfg);
394 }
395 else
396 {
397 array_insert(this->other_auths, ARRAY_TAIL, cfg);
398 }
399 }
400
401 METHOD(ike_sa_t, create_auth_cfg_enumerator, enumerator_t*,
402 private_ike_sa_t *this, bool local)
403 {
404 if (local)
405 {
406 return array_create_enumerator(this->my_auths);
407 }
408 return array_create_enumerator(this->other_auths);
409 }
410
411 /**
412 * Flush the stored authentication round information
413 */
414 static void flush_auth_cfgs(private_ike_sa_t *this)
415 {
416 auth_cfg_t *cfg;
417
418 this->my_auth->purge(this->my_auth, FALSE);
419 this->other_auth->purge(this->other_auth, FALSE);
420
421 while (array_remove(this->my_auths, ARRAY_TAIL, &cfg))
422 {
423 cfg->destroy(cfg);
424 }
425 while (array_remove(this->other_auths, ARRAY_TAIL, &cfg))
426 {
427 cfg->destroy(cfg);
428 }
429 }
430
431 METHOD(ike_sa_t, get_proposal, proposal_t*,
432 private_ike_sa_t *this)
433 {
434 return this->proposal;
435 }
436
437 METHOD(ike_sa_t, set_proposal, void,
438 private_ike_sa_t *this, proposal_t *proposal)
439 {
440 DESTROY_IF(this->proposal);
441 this->proposal = proposal->clone(proposal);
442 }
443
444 METHOD(ike_sa_t, set_message_id, void,
445 private_ike_sa_t *this, bool initiate, u_int32_t mid)
446 {
447 if (initiate)
448 {
449 this->task_manager->reset(this->task_manager, mid, UINT_MAX);
450 }
451 else
452 {
453 this->task_manager->reset(this->task_manager, UINT_MAX, mid);
454 }
455 }
456
457 METHOD(ike_sa_t, send_keepalive, void,
458 private_ike_sa_t *this)
459 {
460 send_keepalive_job_t *job;
461 time_t last_out, now, diff;
462
463 if (!(this->conditions & COND_NAT_HERE) || this->keepalive_interval == 0)
464 { /* disable keep alives if we are not NATed anymore */
465 return;
466 }
467
468 last_out = get_use_time(this, FALSE);
469 now = time_monotonic(NULL);
470
471 diff = now - last_out;
472
473 if (diff >= this->keepalive_interval)
474 {
475 packet_t *packet;
476 chunk_t data;
477
478 packet = packet_create();
479 packet->set_source(packet, this->my_host->clone(this->my_host));
480 packet->set_destination(packet, this->other_host->clone(this->other_host));
481 data.ptr = malloc(1);
482 data.ptr[0] = 0xFF;
483 data.len = 1;
484 packet->set_data(packet, data);
485 DBG1(DBG_IKE, "sending keep alive to %#H", this->other_host);
486 charon->sender->send_no_marker(charon->sender, packet);
487 diff = 0;
488 }
489 job = send_keepalive_job_create(this->ike_sa_id);
490 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
491 this->keepalive_interval - diff);
492 }
493
494 METHOD(ike_sa_t, get_ike_cfg, ike_cfg_t*,
495 private_ike_sa_t *this)
496 {
497 return this->ike_cfg;
498 }
499
500 METHOD(ike_sa_t, set_ike_cfg, void,
501 private_ike_sa_t *this, ike_cfg_t *ike_cfg)
502 {
503 ike_cfg->get_ref(ike_cfg);
504 this->ike_cfg = ike_cfg;
505 }
506
507 METHOD(ike_sa_t, enable_extension, void,
508 private_ike_sa_t *this, ike_extension_t extension)
509 {
510 this->extensions |= extension;
511 }
512
513 METHOD(ike_sa_t, supports_extension, bool,
514 private_ike_sa_t *this, ike_extension_t extension)
515 {
516 return (this->extensions & extension) != FALSE;
517 }
518
519 METHOD(ike_sa_t, has_condition, bool,
520 private_ike_sa_t *this, ike_condition_t condition)
521 {
522 return (this->conditions & condition) != FALSE;
523 }
524
525 METHOD(ike_sa_t, set_condition, void,
526 private_ike_sa_t *this, ike_condition_t condition, bool enable)
527 {
528 if (has_condition(this, condition) != enable)
529 {
530 if (enable)
531 {
532 this->conditions |= condition;
533 switch (condition)
534 {
535 case COND_NAT_HERE:
536 DBG1(DBG_IKE, "local host is behind NAT, sending keep alives");
537 this->conditions |= COND_NAT_ANY;
538 send_keepalive(this);
539 break;
540 case COND_NAT_THERE:
541 DBG1(DBG_IKE, "remote host is behind NAT");
542 this->conditions |= COND_NAT_ANY;
543 break;
544 case COND_NAT_FAKE:
545 DBG1(DBG_IKE, "faking NAT situation to enforce UDP encapsulation");
546 this->conditions |= COND_NAT_ANY;
547 break;
548 default:
549 break;
550 }
551 }
552 else
553 {
554 this->conditions &= ~condition;
555 switch (condition)
556 {
557 case COND_NAT_HERE:
558 case COND_NAT_FAKE:
559 case COND_NAT_THERE:
560 set_condition(this, COND_NAT_ANY,
561 has_condition(this, COND_NAT_HERE) ||
562 has_condition(this, COND_NAT_THERE) ||
563 has_condition(this, COND_NAT_FAKE));
564 break;
565 default:
566 break;
567 }
568 }
569 }
570 }
571
572 METHOD(ike_sa_t, send_dpd, status_t,
573 private_ike_sa_t *this)
574 {
575 job_t *job;
576 time_t diff, delay;
577 bool task_queued = FALSE;
578
579 if (this->state == IKE_PASSIVE)
580 {
581 return INVALID_STATE;
582 }
583 delay = this->peer_cfg->get_dpd(this->peer_cfg);
584 if (this->task_manager->busy(this->task_manager))
585 {
586 /* an exchange is in the air, no need to start a DPD check */
587 diff = 0;
588 }
589 else
590 {
591 /* check if there was any inbound traffic */
592 time_t last_in, now;
593 last_in = get_use_time(this, TRUE);
594 now = time_monotonic(NULL);
595 diff = now - last_in;
596 if (!delay || diff >= delay)
597 {
598 /* too long ago, initiate dead peer detection */
599 DBG1(DBG_IKE, "sending DPD request");
600 this->task_manager->queue_dpd(this->task_manager);
601 task_queued = TRUE;
602 diff = 0;
603 }
604 }
605 /* recheck in "interval" seconds */
606 if (delay)
607 {
608 job = (job_t*)send_dpd_job_create(this->ike_sa_id);
609 lib->scheduler->schedule_job(lib->scheduler, job, delay - diff);
610 }
611 if (task_queued)
612 {
613 return this->task_manager->initiate(this->task_manager);
614 }
615 return SUCCESS;
616 }
617
618 METHOD(ike_sa_t, get_state, ike_sa_state_t,
619 private_ike_sa_t *this)
620 {
621 return this->state;
622 }
623
624 METHOD(ike_sa_t, set_state, void,
625 private_ike_sa_t *this, ike_sa_state_t state)
626 {
627 bool trigger_dpd = FALSE;
628
629 DBG2(DBG_IKE, "IKE_SA %s[%d] state change: %N => %N",
630 get_name(this), this->unique_id,
631 ike_sa_state_names, this->state,
632 ike_sa_state_names, state);
633
634 switch (state)
635 {
636 case IKE_ESTABLISHED:
637 {
638 if (this->state == IKE_CONNECTING ||
639 this->state == IKE_PASSIVE)
640 {
641 job_t *job;
642 u_int32_t t;
643
644 /* calculate rekey, reauth and lifetime */
645 this->stats[STAT_ESTABLISHED] = time_monotonic(NULL);
646
647 /* schedule rekeying if we have a time which is smaller than
648 * an already scheduled rekeying */
649 t = this->peer_cfg->get_rekey_time(this->peer_cfg, TRUE);
650 if (t && (this->stats[STAT_REKEY] == 0 ||
651 (this->stats[STAT_REKEY] > t + this->stats[STAT_ESTABLISHED])))
652 {
653 this->stats[STAT_REKEY] = t + this->stats[STAT_ESTABLISHED];
654 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, FALSE);
655 lib->scheduler->schedule_job(lib->scheduler, job, t);
656 DBG1(DBG_IKE, "scheduling rekeying in %ds", t);
657 }
658 t = this->peer_cfg->get_reauth_time(this->peer_cfg, TRUE);
659 if (t && (this->stats[STAT_REAUTH] == 0 ||
660 (this->stats[STAT_REAUTH] > t + this->stats[STAT_ESTABLISHED])))
661 {
662 this->stats[STAT_REAUTH] = t + this->stats[STAT_ESTABLISHED];
663 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE);
664 lib->scheduler->schedule_job(lib->scheduler, job, t);
665 DBG1(DBG_IKE, "scheduling reauthentication in %ds", t);
666 }
667 t = this->peer_cfg->get_over_time(this->peer_cfg);
668 if (this->stats[STAT_REKEY] || this->stats[STAT_REAUTH])
669 {
670 if (this->stats[STAT_REAUTH] == 0)
671 {
672 this->stats[STAT_DELETE] = this->stats[STAT_REKEY];
673 }
674 else if (this->stats[STAT_REKEY] == 0)
675 {
676 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH];
677 }
678 else
679 {
680 this->stats[STAT_DELETE] = min(this->stats[STAT_REKEY],
681 this->stats[STAT_REAUTH]);
682 }
683 this->stats[STAT_DELETE] += t;
684 t = this->stats[STAT_DELETE] - this->stats[STAT_ESTABLISHED];
685 job = (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE);
686 lib->scheduler->schedule_job(lib->scheduler, job, t);
687 DBG1(DBG_IKE, "maximum IKE_SA lifetime %ds", t);
688 }
689 trigger_dpd = this->peer_cfg->get_dpd(this->peer_cfg);
690 if (trigger_dpd)
691 {
692 /* Some peers delay the DELETE after rekeying an IKE_SA.
693 * If this delay is longer than our DPD delay, we would
694 * send a DPD request here. The IKE_SA is not ready to do
695 * so yet, so prevent that. */
696 this->stats[STAT_INBOUND] = this->stats[STAT_ESTABLISHED];
697 }
698 }
699 break;
700 }
701 default:
702 break;
703 }
704 charon->bus->ike_state_change(charon->bus, &this->public, state);
705 this->state = state;
706
707 if (trigger_dpd)
708 {
709 if (supports_extension(this, EXT_DPD))
710 {
711 send_dpd(this);
712 }
713 else
714 {
715 DBG1(DBG_IKE, "DPD not supported by peer, disabled");
716 }
717 }
718 }
719
720 METHOD(ike_sa_t, reset, void,
721 private_ike_sa_t *this)
722 {
723 /* the responder ID is reset, as peer may choose another one */
724 if (this->ike_sa_id->is_initiator(this->ike_sa_id))
725 {
726 this->ike_sa_id->set_responder_spi(this->ike_sa_id, 0);
727 }
728
729 set_state(this, IKE_CREATED);
730
731 flush_auth_cfgs(this);
732
733 this->keymat->destroy(this->keymat);
734 this->keymat = keymat_create(this->version,
735 this->ike_sa_id->is_initiator(this->ike_sa_id));
736
737 this->task_manager->reset(this->task_manager, 0, 0);
738 }
739
740 METHOD(ike_sa_t, get_keymat, keymat_t*,
741 private_ike_sa_t *this)
742 {
743 return this->keymat;
744 }
745
746 METHOD(ike_sa_t, add_virtual_ip, void,
747 private_ike_sa_t *this, bool local, host_t *ip)
748 {
749 if (local)
750 {
751 char *iface;
752
753 if (hydra->kernel_interface->get_interface(hydra->kernel_interface,
754 this->my_host, &iface))
755 {
756 DBG1(DBG_IKE, "installing new virtual IP %H", ip);
757 if (hydra->kernel_interface->add_ip(hydra->kernel_interface,
758 ip, -1, iface) == SUCCESS)
759 {
760 array_insert_create(&this->my_vips, ARRAY_TAIL, ip->clone(ip));
761 }
762 else
763 {
764 DBG1(DBG_IKE, "installing virtual IP %H failed", ip);
765 }
766 free(iface);
767 }
768 else
769 {
770 DBG1(DBG_IKE, "looking up interface for virtual IP %H failed", ip);
771 }
772 }
773 else
774 {
775 array_insert_create(&this->other_vips, ARRAY_TAIL, ip->clone(ip));
776 }
777 }
778
779
780 METHOD(ike_sa_t, clear_virtual_ips, void,
781 private_ike_sa_t *this, bool local)
782 {
783 array_t *vips;
784 host_t *vip;
785
786 vips = local ? this->my_vips : this->other_vips;
787 if (!local && array_count(vips))
788 {
789 charon->bus->assign_vips(charon->bus, &this->public, FALSE);
790 }
791 while (array_remove(vips, ARRAY_HEAD, &vip))
792 {
793 if (local)
794 {
795 hydra->kernel_interface->del_ip(hydra->kernel_interface,
796 vip, -1, TRUE);
797 }
798 vip->destroy(vip);
799 }
800 }
801
802 METHOD(ike_sa_t, create_virtual_ip_enumerator, enumerator_t*,
803 private_ike_sa_t *this, bool local)
804 {
805 if (local)
806 {
807 return array_create_enumerator(this->my_vips);
808 }
809 return array_create_enumerator(this->other_vips);
810 }
811
812 METHOD(ike_sa_t, add_peer_address, void,
813 private_ike_sa_t *this, host_t *host)
814 {
815 array_insert_create(&this->peer_addresses, ARRAY_TAIL, host);
816 }
817
818 METHOD(ike_sa_t, create_peer_address_enumerator, enumerator_t*,
819 private_ike_sa_t *this)
820 {
821 if (this->peer_addresses)
822 {
823 return array_create_enumerator(this->peer_addresses);
824 }
825 /* in case we don't have MOBIKE */
826 return enumerator_create_single(this->other_host, NULL);
827 }
828
829 METHOD(ike_sa_t, clear_peer_addresses, void,
830 private_ike_sa_t *this)
831 {
832 array_destroy_offset(this->peer_addresses, offsetof(host_t, destroy));
833 this->peer_addresses = NULL;
834 }
835
836 METHOD(ike_sa_t, has_mapping_changed, bool,
837 private_ike_sa_t *this, chunk_t hash)
838 {
839 if (this->nat_detection_dest.ptr == NULL)
840 {
841 this->nat_detection_dest = chunk_clone(hash);
842 return FALSE;
843 }
844 if (chunk_equals(hash, this->nat_detection_dest))
845 {
846 return FALSE;
847 }
848 free(this->nat_detection_dest.ptr);
849 this->nat_detection_dest = chunk_clone(hash);
850 return TRUE;
851 }
852
853 METHOD(ike_sa_t, set_pending_updates, void,
854 private_ike_sa_t *this, u_int32_t updates)
855 {
856 this->pending_updates = updates;
857 }
858
859 METHOD(ike_sa_t, get_pending_updates, u_int32_t,
860 private_ike_sa_t *this)
861 {
862 return this->pending_updates;
863 }
864
865 METHOD(ike_sa_t, float_ports, void,
866 private_ike_sa_t *this)
867 {
868 /* do not switch if we have a custom port from MOBIKE/NAT */
869 if (this->my_host->get_port(this->my_host) ==
870 charon->socket->get_port(charon->socket, FALSE))
871 {
872 this->my_host->set_port(this->my_host,
873 charon->socket->get_port(charon->socket, TRUE));
874 }
875 if (this->other_host->get_port(this->other_host) == IKEV2_UDP_PORT)
876 {
877 this->other_host->set_port(this->other_host, IKEV2_NATT_PORT);
878 }
879 }
880
881 METHOD(ike_sa_t, update_hosts, void,
882 private_ike_sa_t *this, host_t *me, host_t *other, bool force)
883 {
884 bool update = FALSE;
885
886 if (me == NULL)
887 {
888 me = this->my_host;
889 }
890 if (other == NULL)
891 {
892 other = this->other_host;
893 }
894
895 /* apply hosts on first received message */
896 if (this->my_host->is_anyaddr(this->my_host) ||
897 this->other_host->is_anyaddr(this->other_host))
898 {
899 set_my_host(this, me->clone(me));
900 set_other_host(this, other->clone(other));
901 update = TRUE;
902 }
903 else
904 {
905 /* update our address in any case */
906 if (force && !me->equals(me, this->my_host))
907 {
908 set_my_host(this, me->clone(me));
909 update = TRUE;
910 }
911
912 if (!other->equals(other, this->other_host))
913 {
914 /* update others address if we are NOT NATed */
915 if ((has_condition(this, COND_NAT_THERE) &&
916 !has_condition(this, COND_NAT_HERE)) || force )
917 {
918 set_other_host(this, other->clone(other));
919 update = TRUE;
920 }
921 }
922 }
923
924 /* update all associated CHILD_SAs, if required */
925 if (update)
926 {
927 enumerator_t *enumerator;
928 child_sa_t *child_sa;
929 linked_list_t *vips;
930
931 vips = linked_list_create_from_enumerator(
932 array_create_enumerator(this->my_vips));
933
934 enumerator = array_create_enumerator(this->child_sas);
935 while (enumerator->enumerate(enumerator, &child_sa))
936 {
937 if (child_sa->update(child_sa, this->my_host, this->other_host,
938 vips, has_condition(this, COND_NAT_ANY)) == NOT_SUPPORTED)
939 {
940 this->public.rekey_child_sa(&this->public,
941 child_sa->get_protocol(child_sa),
942 child_sa->get_spi(child_sa, TRUE));
943 }
944 }
945 enumerator->destroy(enumerator);
946
947 vips->destroy(vips);
948 }
949 }
950
951 /**
952 * Set configured DSCP value on packet
953 */
954 static void set_dscp(private_ike_sa_t *this, packet_t *packet)
955 {
956 ike_cfg_t *ike_cfg;
957
958 /* prefer IKE config on peer_cfg, as its selection is more accurate
959 * then the initial IKE config */
960 if (this->peer_cfg)
961 {
962 ike_cfg = this->peer_cfg->get_ike_cfg(this->peer_cfg);
963 }
964 else
965 {
966 ike_cfg = this->ike_cfg;
967 }
968 if (ike_cfg)
969 {
970 packet->set_dscp(packet, ike_cfg->get_dscp(ike_cfg));
971 }
972 }
973
974 METHOD(ike_sa_t, generate_message, status_t,
975 private_ike_sa_t *this, message_t *message, packet_t **packet)
976 {
977 status_t status;
978
979 if (message->is_encoded(message))
980 { /* already encoded in task, but set DSCP value */
981 *packet = message->get_packet(message);
982 set_dscp(this, *packet);
983 return SUCCESS;
984 }
985 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
986 message->set_ike_sa_id(message, this->ike_sa_id);
987 charon->bus->message(charon->bus, message, FALSE, TRUE);
988 status = message->generate(message, this->keymat, packet);
989 if (status == SUCCESS)
990 {
991 set_dscp(this, *packet);
992 charon->bus->message(charon->bus, message, FALSE, FALSE);
993 }
994 return status;
995 }
996
997 METHOD(ike_sa_t, set_kmaddress, void,
998 private_ike_sa_t *this, host_t *local, host_t *remote)
999 {
1000 DESTROY_IF(this->local_host);
1001 DESTROY_IF(this->remote_host);
1002 this->local_host = local->clone(local);
1003 this->remote_host = remote->clone(remote);
1004 }
1005
1006 #ifdef ME
1007 METHOD(ike_sa_t, act_as_mediation_server, void,
1008 private_ike_sa_t *this)
1009 {
1010 charon->mediation_manager->update_sa_id(charon->mediation_manager,
1011 this->other_id, this->ike_sa_id);
1012 this->is_mediation_server = TRUE;
1013 }
1014
1015 METHOD(ike_sa_t, get_server_reflexive_host, host_t*,
1016 private_ike_sa_t *this)
1017 {
1018 return this->server_reflexive_host;
1019 }
1020
1021 METHOD(ike_sa_t, set_server_reflexive_host, void,
1022 private_ike_sa_t *this, host_t *host)
1023 {
1024 DESTROY_IF(this->server_reflexive_host);
1025 this->server_reflexive_host = host;
1026 }
1027
1028 METHOD(ike_sa_t, get_connect_id, chunk_t,
1029 private_ike_sa_t *this)
1030 {
1031 return this->connect_id;
1032 }
1033
1034 METHOD(ike_sa_t, respond, status_t,
1035 private_ike_sa_t *this, identification_t *peer_id, chunk_t connect_id)
1036 {
1037 ike_me_t *task = ike_me_create(&this->public, TRUE);
1038 task->respond(task, peer_id, connect_id);
1039 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1040 return this->task_manager->initiate(this->task_manager);
1041 }
1042
1043 METHOD(ike_sa_t, callback, status_t,
1044 private_ike_sa_t *this, identification_t *peer_id)
1045 {
1046 ike_me_t *task = ike_me_create(&this->public, TRUE);
1047 task->callback(task, peer_id);
1048 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1049 return this->task_manager->initiate(this->task_manager);
1050 }
1051
1052 METHOD(ike_sa_t, relay, status_t,
1053 private_ike_sa_t *this, identification_t *requester, chunk_t connect_id,
1054 chunk_t connect_key, linked_list_t *endpoints, bool response)
1055 {
1056 ike_me_t *task = ike_me_create(&this->public, TRUE);
1057 task->relay(task, requester, connect_id, connect_key, endpoints, response);
1058 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1059 return this->task_manager->initiate(this->task_manager);
1060 }
1061
1062 METHOD(ike_sa_t, initiate_mediation, status_t,
1063 private_ike_sa_t *this, peer_cfg_t *mediated_cfg)
1064 {
1065 ike_me_t *task = ike_me_create(&this->public, TRUE);
1066 task->connect(task, mediated_cfg->get_peer_id(mediated_cfg));
1067 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1068 return this->task_manager->initiate(this->task_manager);
1069 }
1070
1071 METHOD(ike_sa_t, initiate_mediated, status_t,
1072 private_ike_sa_t *this, host_t *me, host_t *other, chunk_t connect_id)
1073 {
1074 set_my_host(this, me->clone(me));
1075 set_other_host(this, other->clone(other));
1076 chunk_free(&this->connect_id);
1077 this->connect_id = chunk_clone(connect_id);
1078 return this->task_manager->initiate(this->task_manager);
1079 }
1080 #endif /* ME */
1081
1082 /**
1083 * Resolve DNS host in configuration
1084 */
1085 static void resolve_hosts(private_ike_sa_t *this)
1086 {
1087 host_t *host;
1088 int family = AF_UNSPEC;
1089
1090 switch (charon->socket->supported_families(charon->socket))
1091 {
1092 case SOCKET_FAMILY_IPV4:
1093 family = AF_INET;
1094 break;
1095 case SOCKET_FAMILY_IPV6:
1096 family = AF_INET6;
1097 break;
1098 case SOCKET_FAMILY_BOTH:
1099 case SOCKET_FAMILY_NONE:
1100 break;
1101 }
1102
1103 if (this->remote_host)
1104 {
1105 host = this->remote_host->clone(this->remote_host);
1106 host->set_port(host, IKEV2_UDP_PORT);
1107 }
1108 else
1109 {
1110 host = this->ike_cfg->resolve_other(this->ike_cfg, family);
1111 }
1112 if (host)
1113 {
1114 set_other_host(this, host);
1115 }
1116
1117 if (this->local_host)
1118 {
1119 host = this->local_host->clone(this->local_host);
1120 host->set_port(host, charon->socket->get_port(charon->socket, FALSE));
1121 }
1122 else
1123 {
1124 /* use same address family as for other */
1125 if (!this->other_host->is_anyaddr(this->other_host))
1126 {
1127 family = this->other_host->get_family(this->other_host);
1128 }
1129 host = this->ike_cfg->resolve_me(this->ike_cfg, family);
1130
1131 if (host && host->is_anyaddr(host) &&
1132 !this->other_host->is_anyaddr(this->other_host))
1133 {
1134 host->destroy(host);
1135 host = hydra->kernel_interface->get_source_addr(
1136 hydra->kernel_interface, this->other_host, NULL);
1137 if (host)
1138 {
1139 host->set_port(host, this->ike_cfg->get_my_port(this->ike_cfg));
1140 }
1141 else
1142 { /* fallback to address family specific %any(6), if configured */
1143 host = this->ike_cfg->resolve_me(this->ike_cfg, family);
1144 }
1145 }
1146 }
1147 if (host)
1148 {
1149 set_my_host(this, host);
1150 }
1151 }
1152
1153 METHOD(ike_sa_t, initiate, status_t,
1154 private_ike_sa_t *this, child_cfg_t *child_cfg, u_int32_t reqid,
1155 traffic_selector_t *tsi, traffic_selector_t *tsr)
1156 {
1157 bool defer_initiate = FALSE;
1158
1159 if (this->state == IKE_CREATED)
1160 {
1161 if (this->my_host->is_anyaddr(this->my_host) ||
1162 this->other_host->is_anyaddr(this->other_host))
1163 {
1164 resolve_hosts(this);
1165 }
1166
1167 if (this->other_host->is_anyaddr(this->other_host)
1168 #ifdef ME
1169 && !this->peer_cfg->get_mediated_by(this->peer_cfg)
1170 #endif /* ME */
1171 )
1172 {
1173 bool is_anyaddr;
1174 host_t *host;
1175 char *addr;
1176
1177 addr = this->ike_cfg->get_other_addr(this->ike_cfg);
1178 host = this->ike_cfg->resolve_other(this->ike_cfg, AF_UNSPEC);
1179 is_anyaddr = host && host->is_anyaddr(host);
1180 DESTROY_IF(host);
1181
1182 if (is_anyaddr || !this->retry_initiate_interval)
1183 {
1184 if (is_anyaddr)
1185 {
1186 DBG1(DBG_IKE, "unable to initiate to %s", addr);
1187 }
1188 else
1189 {
1190 DBG1(DBG_IKE, "unable to resolve %s, initiate aborted",
1191 addr);
1192 }
1193 DESTROY_IF(child_cfg);
1194 charon->bus->alert(charon->bus, ALERT_PEER_ADDR_FAILED);
1195 return DESTROY_ME;
1196 }
1197 DBG1(DBG_IKE, "unable to resolve %s, retrying in %ds",
1198 addr, this->retry_initiate_interval);
1199 defer_initiate = TRUE;
1200 }
1201
1202 set_condition(this, COND_ORIGINAL_INITIATOR, TRUE);
1203 this->task_manager->queue_ike(this->task_manager);
1204 }
1205
1206 #ifdef ME
1207 if (this->peer_cfg->is_mediation(this->peer_cfg))
1208 {
1209 if (this->state == IKE_ESTABLISHED)
1210 {
1211 /* mediation connection is already established, retrigger state
1212 * change to notify bus listeners */
1213 DBG1(DBG_IKE, "mediation connection is already up");
1214 set_state(this, IKE_ESTABLISHED);
1215 }
1216 DESTROY_IF(child_cfg);
1217 }
1218 else
1219 #endif /* ME */
1220 if (child_cfg)
1221 {
1222 /* normal IKE_SA with CHILD_SA */
1223 this->task_manager->queue_child(this->task_manager, child_cfg, reqid,
1224 tsi, tsr);
1225 #ifdef ME
1226 if (this->peer_cfg->get_mediated_by(this->peer_cfg))
1227 {
1228 /* mediated connection, initiate mediation process */
1229 job_t *job = (job_t*)initiate_mediation_job_create(this->ike_sa_id);
1230 lib->processor->queue_job(lib->processor, job);
1231 return SUCCESS;
1232 }
1233 #endif /* ME */
1234 }
1235
1236 if (defer_initiate)
1237 {
1238 if (!this->retry_initiate_queued)
1239 {
1240 job_t *job = (job_t*)retry_initiate_job_create(this->ike_sa_id);
1241 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
1242 this->retry_initiate_interval);
1243 this->retry_initiate_queued = TRUE;
1244 }
1245 return SUCCESS;
1246 }
1247 this->retry_initiate_queued = FALSE;
1248 return this->task_manager->initiate(this->task_manager);
1249 }
1250
1251 METHOD(ike_sa_t, retry_initiate, status_t,
1252 private_ike_sa_t *this)
1253 {
1254 if (this->retry_initiate_queued)
1255 {
1256 this->retry_initiate_queued = FALSE;
1257 return initiate(this, NULL, 0, NULL, NULL);
1258 }
1259 return SUCCESS;
1260 }
1261
1262 METHOD(ike_sa_t, process_message, status_t,
1263 private_ike_sa_t *this, message_t *message)
1264 {
1265 status_t status;
1266
1267 if (this->state == IKE_PASSIVE)
1268 { /* do not handle messages in passive state */
1269 return FAILED;
1270 }
1271 if (message->get_major_version(message) != this->version)
1272 {
1273 DBG1(DBG_IKE, "ignoring %N IKEv%u exchange on %N SA",
1274 exchange_type_names, message->get_exchange_type(message),
1275 message->get_major_version(message),
1276 ike_version_names, this->version);
1277 /* TODO-IKEv1: fall back to IKEv1 if we receive an IKEv1
1278 * INVALID_MAJOR_VERSION on an IKEv2 SA. */
1279 return FAILED;
1280 }
1281 status = this->task_manager->process_message(this->task_manager, message);
1282 if (this->flush_auth_cfg && this->state == IKE_ESTABLISHED)
1283 {
1284 /* authentication completed */
1285 this->flush_auth_cfg = FALSE;
1286 flush_auth_cfgs(this);
1287 }
1288 return status;
1289 }
1290
1291 METHOD(ike_sa_t, get_id, ike_sa_id_t*,
1292 private_ike_sa_t *this)
1293 {
1294 return this->ike_sa_id;
1295 }
1296
1297 METHOD(ike_sa_t, get_version, ike_version_t,
1298 private_ike_sa_t *this)
1299 {
1300 return this->version;
1301 }
1302
1303 METHOD(ike_sa_t, get_my_id, identification_t*,
1304 private_ike_sa_t *this)
1305 {
1306 return this->my_id;
1307 }
1308
1309 METHOD(ike_sa_t, set_my_id, void,
1310 private_ike_sa_t *this, identification_t *me)
1311 {
1312 DESTROY_IF(this->my_id);
1313 this->my_id = me;
1314 }
1315
1316 METHOD(ike_sa_t, get_other_id, identification_t*,
1317 private_ike_sa_t *this)
1318 {
1319 return this->other_id;
1320 }
1321
1322 METHOD(ike_sa_t, get_other_eap_id, identification_t*,
1323 private_ike_sa_t *this)
1324 {
1325 identification_t *id = NULL, *current;
1326 enumerator_t *enumerator;
1327 auth_cfg_t *cfg;
1328
1329 enumerator = array_create_enumerator(this->other_auths);
1330 while (enumerator->enumerate(enumerator, &cfg))
1331 {
1332 /* prefer EAP-Identity of last round */
1333 current = cfg->get(cfg, AUTH_RULE_EAP_IDENTITY);
1334 if (!current || current->get_type(current) == ID_ANY)
1335 {
1336 current = cfg->get(cfg, AUTH_RULE_XAUTH_IDENTITY);
1337 }
1338 if (!current || current->get_type(current) == ID_ANY)
1339 {
1340 current = cfg->get(cfg, AUTH_RULE_IDENTITY);
1341 }
1342 if (current && current->get_type(current) != ID_ANY)
1343 {
1344 id = current;
1345 continue;
1346 }
1347 }
1348 enumerator->destroy(enumerator);
1349 if (id)
1350 {
1351 return id;
1352 }
1353 return this->other_id;
1354 }
1355
1356 METHOD(ike_sa_t, set_other_id, void,
1357 private_ike_sa_t *this, identification_t *other)
1358 {
1359 DESTROY_IF(this->other_id);
1360 this->other_id = other;
1361 }
1362
1363 METHOD(ike_sa_t, add_child_sa, void,
1364 private_ike_sa_t *this, child_sa_t *child_sa)
1365 {
1366 array_insert_create(&this->child_sas, ARRAY_TAIL, child_sa);
1367 }
1368
1369 METHOD(ike_sa_t, get_child_sa, child_sa_t*,
1370 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool inbound)
1371 {
1372 enumerator_t *enumerator;
1373 child_sa_t *current, *found = NULL;
1374
1375 enumerator = array_create_enumerator(this->child_sas);
1376 while (enumerator->enumerate(enumerator, (void**)&current))
1377 {
1378 if (current->get_spi(current, inbound) == spi &&
1379 current->get_protocol(current) == protocol)
1380 {
1381 found = current;
1382 }
1383 }
1384 enumerator->destroy(enumerator);
1385 return found;
1386 }
1387
1388 METHOD(ike_sa_t, get_child_count, int,
1389 private_ike_sa_t *this)
1390 {
1391 return array_count(this->child_sas);
1392 }
1393
1394 METHOD(ike_sa_t, create_child_sa_enumerator, enumerator_t*,
1395 private_ike_sa_t *this)
1396 {
1397 return array_create_enumerator(this->child_sas);
1398 }
1399
1400 METHOD(ike_sa_t, remove_child_sa, void,
1401 private_ike_sa_t *this, enumerator_t *enumerator)
1402 {
1403 array_remove_at(this->child_sas, enumerator);
1404 }
1405
1406 METHOD(ike_sa_t, rekey_child_sa, status_t,
1407 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1408 {
1409 if (this->state == IKE_PASSIVE)
1410 {
1411 return INVALID_STATE;
1412 }
1413 this->task_manager->queue_child_rekey(this->task_manager, protocol, spi);
1414 return this->task_manager->initiate(this->task_manager);
1415 }
1416
1417 METHOD(ike_sa_t, delete_child_sa, status_t,
1418 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool expired)
1419 {
1420 if (this->state == IKE_PASSIVE)
1421 {
1422 return INVALID_STATE;
1423 }
1424 this->task_manager->queue_child_delete(this->task_manager,
1425 protocol, spi, expired);
1426 return this->task_manager->initiate(this->task_manager);
1427 }
1428
1429 METHOD(ike_sa_t, destroy_child_sa, status_t,
1430 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1431 {
1432 enumerator_t *enumerator;
1433 child_sa_t *child_sa;
1434 status_t status = NOT_FOUND;
1435
1436 enumerator = array_create_enumerator(this->child_sas);
1437 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1438 {
1439 if (child_sa->get_protocol(child_sa) == protocol &&
1440 child_sa->get_spi(child_sa, TRUE) == spi)
1441 {
1442 array_remove_at(this->child_sas, enumerator);
1443 child_sa->destroy(child_sa);
1444 status = SUCCESS;
1445 break;
1446 }
1447 }
1448 enumerator->destroy(enumerator);
1449 return status;
1450 }
1451
1452 METHOD(ike_sa_t, delete_, status_t,
1453 private_ike_sa_t *this)
1454 {
1455 switch (this->state)
1456 {
1457 case IKE_REKEYING:
1458 if (this->version == IKEV1)
1459 { /* SA has been reauthenticated, delete */
1460 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1461 break;
1462 }
1463 /* FALL */
1464 case IKE_ESTABLISHED:
1465 if (time_monotonic(NULL) >= this->stats[STAT_DELETE])
1466 { /* IKE_SA hard lifetime hit */
1467 charon->bus->alert(charon->bus, ALERT_IKE_SA_EXPIRED);
1468 }
1469 this->task_manager->queue_ike_delete(this->task_manager);
1470 return this->task_manager->initiate(this->task_manager);
1471 case IKE_CREATED:
1472 DBG1(DBG_IKE, "deleting unestablished IKE_SA");
1473 break;
1474 case IKE_PASSIVE:
1475 break;
1476 default:
1477 DBG1(DBG_IKE, "destroying IKE_SA in state %N "
1478 "without notification", ike_sa_state_names, this->state);
1479 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1480 break;
1481 }
1482 return DESTROY_ME;
1483 }
1484
1485 METHOD(ike_sa_t, rekey, status_t,
1486 private_ike_sa_t *this)
1487 {
1488 if (this->state == IKE_PASSIVE)
1489 {
1490 return INVALID_STATE;
1491 }
1492 this->task_manager->queue_ike_rekey(this->task_manager);
1493 return this->task_manager->initiate(this->task_manager);
1494 }
1495
1496 METHOD(ike_sa_t, reauth, status_t,
1497 private_ike_sa_t *this)
1498 {
1499 if (this->state == IKE_PASSIVE)
1500 {
1501 return INVALID_STATE;
1502 }
1503 /* we can't reauthenticate as responder when we use EAP or virtual IPs.
1504 * If the peer does not support RFC4478, there is no way to keep the
1505 * IKE_SA up. */
1506 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1507 {
1508 DBG1(DBG_IKE, "initiator did not reauthenticate as requested");
1509 if (array_count(this->other_vips) != 0 ||
1510 has_condition(this, COND_XAUTH_AUTHENTICATED) ||
1511 has_condition(this, COND_EAP_AUTHENTICATED)
1512 #ifdef ME
1513 /* as mediation server we too cannot reauth the IKE_SA */
1514 || this->is_mediation_server
1515 #endif /* ME */
1516 )
1517 {
1518 time_t del, now;
1519
1520 del = this->stats[STAT_DELETE];
1521 now = time_monotonic(NULL);
1522 DBG1(DBG_IKE, "IKE_SA %s[%d] will timeout in %V",
1523 get_name(this), this->unique_id, &now, &del);
1524 return FAILED;
1525 }
1526 else
1527 {
1528 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d] actively",
1529 get_name(this), this->unique_id);
1530 }
1531 }
1532 else
1533 {
1534 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d]",
1535 get_name(this), this->unique_id);
1536 }
1537 set_condition(this, COND_REAUTHENTICATING, TRUE);
1538 this->task_manager->queue_ike_reauth(this->task_manager);
1539 return this->task_manager->initiate(this->task_manager);
1540 }
1541
1542 /**
1543 * Check if tasks to create CHILD_SAs are queued in the given queue
1544 */
1545 static bool is_child_queued(private_ike_sa_t *this, task_queue_t queue)
1546 {
1547 enumerator_t *enumerator;
1548 task_t *task;
1549 bool found = FALSE;
1550
1551 enumerator = this->task_manager->create_task_enumerator(this->task_manager,
1552 queue);
1553 while (enumerator->enumerate(enumerator, &task))
1554 {
1555 if (task->get_type(task) == TASK_CHILD_CREATE ||
1556 task->get_type(task) == TASK_QUICK_MODE)
1557 {
1558 found = TRUE;
1559 break;
1560 }
1561 }
1562 enumerator->destroy(enumerator);
1563 return found;
1564 }
1565
1566 METHOD(ike_sa_t, reestablish, status_t,
1567 private_ike_sa_t *this)
1568 {
1569 ike_sa_t *new;
1570 host_t *host;
1571 action_t action;
1572 enumerator_t *enumerator;
1573 child_sa_t *child_sa;
1574 child_cfg_t *child_cfg;
1575 bool restart = FALSE;
1576 status_t status = FAILED;
1577
1578 if (has_condition(this, COND_REAUTHENTICATING))
1579 { /* only reauthenticate if we have children */
1580 if (array_count(this->child_sas) == 0
1581 #ifdef ME
1582 /* allow reauth of mediation connections without CHILD_SAs */
1583 && !this->peer_cfg->is_mediation(this->peer_cfg)
1584 #endif /* ME */
1585 )
1586 {
1587 DBG1(DBG_IKE, "unable to reauthenticate IKE_SA, no CHILD_SA "
1588 "to recreate");
1589 }
1590 else
1591 {
1592 restart = TRUE;
1593 }
1594 }
1595 else
1596 { /* check if we have children to keep up at all */
1597 enumerator = array_create_enumerator(this->child_sas);
1598 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1599 {
1600 if (this->state == IKE_DELETING)
1601 {
1602 action = child_sa->get_close_action(child_sa);
1603 }
1604 else
1605 {
1606 action = child_sa->get_dpd_action(child_sa);
1607 }
1608 switch (action)
1609 {
1610 case ACTION_RESTART:
1611 restart = TRUE;
1612 break;
1613 case ACTION_ROUTE:
1614 charon->traps->install(charon->traps, this->peer_cfg,
1615 child_sa->get_config(child_sa),
1616 child_sa->get_reqid(child_sa));
1617 break;
1618 default:
1619 break;
1620 }
1621 }
1622 enumerator->destroy(enumerator);
1623 /* check if we have tasks that recreate children */
1624 if (!restart)
1625 {
1626 restart = is_child_queued(this, TASK_QUEUE_ACTIVE) ||
1627 is_child_queued(this, TASK_QUEUE_QUEUED);
1628 }
1629 #ifdef ME
1630 /* mediation connections have no children, keep them up anyway */
1631 if (this->peer_cfg->is_mediation(this->peer_cfg))
1632 {
1633 restart = TRUE;
1634 }
1635 #endif /* ME */
1636 }
1637 if (!restart)
1638 {
1639 return FAILED;
1640 }
1641
1642 /* check if we are able to reestablish this IKE_SA */
1643 if (!has_condition(this, COND_ORIGINAL_INITIATOR) &&
1644 (array_count(this->other_vips) != 0 ||
1645 has_condition(this, COND_EAP_AUTHENTICATED)
1646 #ifdef ME
1647 || this->is_mediation_server
1648 #endif /* ME */
1649 ))
1650 {
1651 DBG1(DBG_IKE, "unable to reestablish IKE_SA due to asymmetric setup");
1652 return FAILED;
1653 }
1654
1655 new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager,
1656 this->version, TRUE);
1657 if (!new)
1658 {
1659 return FAILED;
1660 }
1661 new->set_peer_cfg(new, this->peer_cfg);
1662 host = this->other_host;
1663 new->set_other_host(new, host->clone(host));
1664 host = this->my_host;
1665 new->set_my_host(new, host->clone(host));
1666 /* resolve hosts but use the old addresses above as fallback */
1667 resolve_hosts((private_ike_sa_t*)new);
1668 /* if we already have a virtual IP, we reuse it */
1669 enumerator = array_create_enumerator(this->my_vips);
1670 while (enumerator->enumerate(enumerator, &host))
1671 {
1672 new->add_virtual_ip(new, TRUE, host);
1673 }
1674 enumerator->destroy(enumerator);
1675
1676 #ifdef ME
1677 if (this->peer_cfg->is_mediation(this->peer_cfg))
1678 {
1679 status = new->initiate(new, NULL, 0, NULL, NULL);
1680 }
1681 else
1682 #endif /* ME */
1683 {
1684 /* handle existing CHILD_SAs */
1685 enumerator = array_create_enumerator(this->child_sas);
1686 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1687 {
1688 if (has_condition(this, COND_REAUTHENTICATING))
1689 {
1690 switch (child_sa->get_state(child_sa))
1691 {
1692 case CHILD_ROUTED:
1693 { /* move routed child directly */
1694 array_remove_at(this->child_sas, enumerator);
1695 new->add_child_sa(new, child_sa);
1696 action = ACTION_NONE;
1697 break;
1698 }
1699 default:
1700 { /* initiate/queue all other CHILD_SAs */
1701 action = ACTION_RESTART;
1702 break;
1703 }
1704 }
1705 }
1706 else
1707 { /* only restart CHILD_SAs that are configured accordingly */
1708 if (this->state == IKE_DELETING)
1709 {
1710 action = child_sa->get_close_action(child_sa);
1711 }
1712 else
1713 {
1714 action = child_sa->get_dpd_action(child_sa);
1715 }
1716 }
1717 switch (action)
1718 {
1719 case ACTION_RESTART:
1720 child_cfg = child_sa->get_config(child_sa);
1721 DBG1(DBG_IKE, "restarting CHILD_SA %s",
1722 child_cfg->get_name(child_cfg));
1723 child_cfg->get_ref(child_cfg);
1724 status = new->initiate(new, child_cfg,
1725 child_sa->get_reqid(child_sa), NULL, NULL);
1726 break;
1727 default:
1728 continue;
1729 }
1730 if (status == DESTROY_ME)
1731 {
1732 break;
1733 }
1734 }
1735 enumerator->destroy(enumerator);
1736 /* adopt any active or queued CHILD-creating tasks */
1737 if (status != DESTROY_ME)
1738 {
1739 task_manager_t *other_tasks = ((private_ike_sa_t*)new)->task_manager;
1740 other_tasks->adopt_child_tasks(other_tasks, this->task_manager);
1741 if (new->get_state(new) == IKE_CREATED)
1742 {
1743 status = new->initiate(new, NULL, 0, NULL, NULL);
1744 }
1745 }
1746 }
1747
1748 if (status == DESTROY_ME)
1749 {
1750 charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, new);
1751 status = FAILED;
1752 }
1753 else
1754 {
1755 charon->bus->ike_reestablish(charon->bus, &this->public, new);
1756 charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
1757 status = SUCCESS;
1758 }
1759 charon->bus->set_sa(charon->bus, &this->public);
1760 return status;
1761 }
1762
1763 METHOD(ike_sa_t, retransmit, status_t,
1764 private_ike_sa_t *this, u_int32_t message_id)
1765 {
1766 if (this->state == IKE_PASSIVE)
1767 {
1768 return INVALID_STATE;
1769 }
1770 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
1771 if (this->task_manager->retransmit(this->task_manager, message_id) != SUCCESS)
1772 {
1773 /* send a proper signal to brief interested bus listeners */
1774 switch (this->state)
1775 {
1776 case IKE_CONNECTING:
1777 {
1778 /* retry IKE_SA_INIT/Main Mode if we have multiple keyingtries */
1779 u_int32_t tries = this->peer_cfg->get_keyingtries(this->peer_cfg);
1780 charon->bus->alert(charon->bus, ALERT_PEER_INIT_UNREACHABLE,
1781 this->keyingtry);
1782 this->keyingtry++;
1783 if (tries == 0 || tries > this->keyingtry)
1784 {
1785 DBG1(DBG_IKE, "peer not responding, trying again (%d/%d)",
1786 this->keyingtry + 1, tries);
1787 reset(this);
1788 resolve_hosts(this);
1789 this->task_manager->queue_ike(this->task_manager);
1790 return this->task_manager->initiate(this->task_manager);
1791 }
1792 DBG1(DBG_IKE, "establishing IKE_SA failed, peer not responding");
1793 break;
1794 }
1795 case IKE_DELETING:
1796 DBG1(DBG_IKE, "proper IKE_SA delete failed, peer not responding");
1797 if (has_condition(this, COND_REAUTHENTICATING))
1798 {
1799 DBG1(DBG_IKE, "delete during reauthentication failed, "
1800 "trying to reestablish IKE_SA anyway");
1801 reestablish(this);
1802 }
1803 break;
1804 case IKE_REKEYING:
1805 DBG1(DBG_IKE, "rekeying IKE_SA failed, peer not responding");
1806 /* FALL */
1807 default:
1808 reestablish(this);
1809 break;
1810 }
1811 if (this->state != IKE_CONNECTING)
1812 {
1813 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1814 }
1815 return DESTROY_ME;
1816 }
1817 return SUCCESS;
1818 }
1819
1820 METHOD(ike_sa_t, set_auth_lifetime, status_t,
1821 private_ike_sa_t *this, u_int32_t lifetime)
1822 {
1823 u_int32_t diff, hard, soft, now;
1824 bool send_update;
1825
1826 diff = this->peer_cfg->get_over_time(this->peer_cfg);
1827 now = time_monotonic(NULL);
1828 hard = now + lifetime;
1829 soft = hard - diff;
1830
1831 /* check if we have to send an AUTH_LIFETIME to enforce the new lifetime.
1832 * We send the notify in IKE_AUTH if not yet ESTABLISHED. */
1833 send_update = this->state == IKE_ESTABLISHED && this->version == IKEV2 &&
1834 !has_condition(this, COND_ORIGINAL_INITIATOR) &&
1835 (array_count(this->other_vips) != 0 ||
1836 has_condition(this, COND_EAP_AUTHENTICATED));
1837
1838 if (lifetime < diff)
1839 {
1840 this->stats[STAT_REAUTH] = now;
1841
1842 if (!send_update)
1843 {
1844 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1845 "starting reauthentication", lifetime);
1846 lib->processor->queue_job(lib->processor,
1847 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE));
1848 }
1849 }
1850 else if (this->stats[STAT_REAUTH] == 0 ||
1851 this->stats[STAT_REAUTH] > soft)
1852 {
1853 this->stats[STAT_REAUTH] = soft;
1854 if (!send_update)
1855 {
1856 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, scheduling "
1857 "reauthentication in %ds", lifetime, lifetime - diff);
1858 lib->scheduler->schedule_job(lib->scheduler,
1859 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE),
1860 lifetime - diff);
1861 }
1862 }
1863 else
1864 {
1865 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1866 "reauthentication already scheduled in %ds", lifetime,
1867 this->stats[STAT_REAUTH] - time_monotonic(NULL));
1868 send_update = FALSE;
1869 }
1870 /* give at least some seconds to reauthenticate */
1871 this->stats[STAT_DELETE] = max(hard, now + 10);
1872
1873 #ifdef USE_IKEV2
1874 if (send_update)
1875 {
1876 ike_auth_lifetime_t *task;
1877
1878 task = ike_auth_lifetime_create(&this->public, TRUE);
1879 this->task_manager->queue_task(this->task_manager, &task->task);
1880 return this->task_manager->initiate(this->task_manager);
1881 }
1882 #endif
1883 return SUCCESS;
1884 }
1885
1886 /**
1887 * Check if the current combination of source and destination address is still
1888 * valid.
1889 */
1890 static bool is_current_path_valid(private_ike_sa_t *this)
1891 {
1892 bool valid = FALSE;
1893 host_t *src;
1894 src = hydra->kernel_interface->get_source_addr(hydra->kernel_interface,
1895 this->other_host, this->my_host);
1896 if (src)
1897 {
1898 if (src->ip_equals(src, this->my_host))
1899 {
1900 valid = TRUE;
1901 }
1902 src->destroy(src);
1903 }
1904 return valid;
1905 }
1906
1907 /**
1908 * Check if we have any path avialable for this IKE SA.
1909 */
1910 static bool is_any_path_valid(private_ike_sa_t *this)
1911 {
1912 bool valid = FALSE;
1913 enumerator_t *enumerator;
1914 host_t *src = NULL, *addr;
1915
1916 DBG1(DBG_IKE, "old path is not available anymore, try to find another");
1917 enumerator = create_peer_address_enumerator(this);
1918 while (enumerator->enumerate(enumerator, &addr))
1919 {
1920 DBG1(DBG_IKE, "looking for a route to %H ...", addr);
1921 src = hydra->kernel_interface->get_source_addr(
1922 hydra->kernel_interface, addr, NULL);
1923 if (src)
1924 {
1925 break;
1926 }
1927 }
1928 enumerator->destroy(enumerator);
1929 if (src)
1930 {
1931 valid = TRUE;
1932 src->destroy(src);
1933 }
1934 return valid;
1935 }
1936
1937 METHOD(ike_sa_t, roam, status_t,
1938 private_ike_sa_t *this, bool address)
1939 {
1940 switch (this->state)
1941 {
1942 case IKE_CREATED:
1943 case IKE_DELETING:
1944 case IKE_DESTROYING:
1945 case IKE_PASSIVE:
1946 return SUCCESS;
1947 default:
1948 break;
1949 }
1950
1951 /* keep existing path if possible */
1952 if (is_current_path_valid(this))
1953 {
1954 DBG2(DBG_IKE, "keeping connection path %H - %H",
1955 this->my_host, this->other_host);
1956 set_condition(this, COND_STALE, FALSE);
1957
1958 if (supports_extension(this, EXT_MOBIKE) && address)
1959 { /* if any addresses changed, send an updated list */
1960 DBG1(DBG_IKE, "sending address list update using MOBIKE");
1961 this->task_manager->queue_mobike(this->task_manager, FALSE, TRUE);
1962 return this->task_manager->initiate(this->task_manager);
1963 }
1964 return SUCCESS;
1965 }
1966
1967 if (!is_any_path_valid(this))
1968 {
1969 DBG1(DBG_IKE, "no route found to reach %H, MOBIKE update deferred",
1970 this->other_host);
1971 set_condition(this, COND_STALE, TRUE);
1972 return SUCCESS;
1973 }
1974 set_condition(this, COND_STALE, FALSE);
1975
1976 /* update addresses with mobike, if supported ... */
1977 if (supports_extension(this, EXT_MOBIKE))
1978 {
1979 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1980 { /* responder updates the peer about changed address config */
1981 DBG1(DBG_IKE, "sending address list update using MOBIKE, "
1982 "implicitly requesting an address change");
1983 address = TRUE;
1984 }
1985 else
1986 {
1987 DBG1(DBG_IKE, "requesting address change using MOBIKE");
1988 }
1989 this->task_manager->queue_mobike(this->task_manager, TRUE, address);
1990 return this->task_manager->initiate(this->task_manager);
1991 }
1992
1993 /* ... reauth if not */
1994 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1995 { /* responder does not reauthenticate */
1996 set_condition(this, COND_STALE, TRUE);
1997 return SUCCESS;
1998 }
1999 DBG1(DBG_IKE, "reauthenticating IKE_SA due to address change");
2000 /* since our previous path is not valid anymore, try and find a new one */
2001 resolve_hosts(this);
2002 return reauth(this);
2003 }
2004
2005 METHOD(ike_sa_t, add_configuration_attribute, void,
2006 private_ike_sa_t *this, attribute_handler_t *handler,
2007 configuration_attribute_type_t type, chunk_t data)
2008 {
2009 attribute_entry_t entry = {
2010 .handler = handler,
2011 .type = type,
2012 .data = chunk_clone(data),
2013 };
2014 array_insert(this->attributes, ARRAY_TAIL, &entry);
2015 }
2016
2017 METHOD(ike_sa_t, create_task_enumerator, enumerator_t*,
2018 private_ike_sa_t *this, task_queue_t queue)
2019 {
2020 return this->task_manager->create_task_enumerator(this->task_manager, queue);
2021 }
2022
2023 METHOD(ike_sa_t, flush_queue, void,
2024 private_ike_sa_t *this, task_queue_t queue)
2025 {
2026 this->task_manager->flush_queue(this->task_manager, queue);
2027 }
2028
2029 METHOD(ike_sa_t, queue_task, void,
2030 private_ike_sa_t *this, task_t *task)
2031 {
2032 this->task_manager->queue_task(this->task_manager, task);
2033 }
2034
2035 METHOD(ike_sa_t, inherit, void,
2036 private_ike_sa_t *this, ike_sa_t *other_public)
2037 {
2038 private_ike_sa_t *other = (private_ike_sa_t*)other_public;
2039 child_sa_t *child_sa;
2040 enumerator_t *enumerator;
2041 attribute_entry_t entry;
2042 auth_cfg_t *cfg;
2043 host_t *vip;
2044
2045 /* apply hosts and ids */
2046 this->my_host->destroy(this->my_host);
2047 this->other_host->destroy(this->other_host);
2048 this->my_id->destroy(this->my_id);
2049 this->other_id->destroy(this->other_id);
2050 this->my_host = other->my_host->clone(other->my_host);
2051 this->other_host = other->other_host->clone(other->other_host);
2052 this->my_id = other->my_id->clone(other->my_id);
2053 this->other_id = other->other_id->clone(other->other_id);
2054
2055 /* apply assigned virtual IPs... */
2056 while (array_remove(other->my_vips, ARRAY_HEAD, &vip))
2057 {
2058 array_insert_create(&this->my_vips, ARRAY_TAIL, vip);
2059 }
2060 while (array_remove(other->other_vips, ARRAY_HEAD, &vip))
2061 {
2062 array_insert_create(&this->other_vips, ARRAY_TAIL, vip);
2063 }
2064
2065 /* authentication information */
2066 enumerator = array_create_enumerator(other->my_auths);
2067 while (enumerator->enumerate(enumerator, &cfg))
2068 {
2069 array_insert(this->my_auths, ARRAY_TAIL, cfg->clone(cfg));
2070 }
2071 enumerator->destroy(enumerator);
2072 enumerator = array_create_enumerator(other->other_auths);
2073 while (enumerator->enumerate(enumerator, &cfg))
2074 {
2075 array_insert(this->other_auths, ARRAY_TAIL, cfg->clone(cfg));
2076 }
2077 enumerator->destroy(enumerator);
2078
2079 /* ... and configuration attributes */
2080 while (array_remove(other->attributes, ARRAY_HEAD, &entry))
2081 {
2082 array_insert(this->attributes, ARRAY_TAIL, &entry);
2083 }
2084
2085 /* inherit all conditions */
2086 this->conditions = other->conditions;
2087 if (this->conditions & COND_NAT_HERE)
2088 {
2089 send_keepalive(this);
2090 }
2091
2092 #ifdef ME
2093 if (other->is_mediation_server)
2094 {
2095 act_as_mediation_server(this);
2096 }
2097 else if (other->server_reflexive_host)
2098 {
2099 this->server_reflexive_host = other->server_reflexive_host->clone(
2100 other->server_reflexive_host);
2101 }
2102 #endif /* ME */
2103
2104 /* adopt all children */
2105 while (array_remove(other->child_sas, ARRAY_HEAD, &child_sa))
2106 {
2107 array_insert_create(&this->child_sas, ARRAY_TAIL, child_sa);
2108 }
2109
2110 /* move pending tasks to the new IKE_SA */
2111 this->task_manager->adopt_tasks(this->task_manager, other->task_manager);
2112
2113 /* reauthentication timeout survives a rekeying */
2114 if (other->stats[STAT_REAUTH])
2115 {
2116 time_t reauth, delete, now = time_monotonic(NULL);
2117
2118 this->stats[STAT_REAUTH] = other->stats[STAT_REAUTH];
2119 reauth = this->stats[STAT_REAUTH] - now;
2120 delete = reauth + this->peer_cfg->get_over_time(this->peer_cfg);
2121 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH] + delete;
2122 DBG1(DBG_IKE, "rescheduling reauthentication in %ds after rekeying, "
2123 "lifetime reduced to %ds", reauth, delete);
2124 lib->scheduler->schedule_job(lib->scheduler,
2125 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE), reauth);
2126 lib->scheduler->schedule_job(lib->scheduler,
2127 (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE), delete);
2128 }
2129 }
2130
2131 METHOD(ike_sa_t, destroy, void,
2132 private_ike_sa_t *this)
2133 {
2134 attribute_entry_t entry;
2135 child_sa_t *child_sa;
2136 host_t *vip;
2137
2138 charon->bus->set_sa(charon->bus, &this->public);
2139
2140 set_state(this, IKE_DESTROYING);
2141 if (this->task_manager)
2142 {
2143 this->task_manager->flush(this->task_manager);
2144 }
2145
2146 /* remove attributes first, as we pass the IKE_SA to the handler */
2147 while (array_remove(this->attributes, ARRAY_TAIL, &entry))
2148 {
2149 hydra->attributes->release(hydra->attributes, entry.handler,
2150 this->other_id, entry.type, entry.data);
2151 free(entry.data.ptr);
2152 }
2153 /* uninstall CHILD_SAs before virtual IPs, otherwise we might kill
2154 * routes that the CHILD_SA tries to uninstall. */
2155 while (array_remove(this->child_sas, ARRAY_TAIL, &child_sa))
2156 {
2157 child_sa->destroy(child_sa);
2158 }
2159 while (array_remove(this->my_vips, ARRAY_TAIL, &vip))
2160 {
2161 hydra->kernel_interface->del_ip(hydra->kernel_interface, vip, -1, TRUE);
2162 vip->destroy(vip);
2163 }
2164 if (array_count(this->other_vips))
2165 {
2166 charon->bus->assign_vips(charon->bus, &this->public, FALSE);
2167 }
2168 while (array_remove(this->other_vips, ARRAY_TAIL, &vip))
2169 {
2170 if (this->peer_cfg)
2171 {
2172 linked_list_t *pools;
2173 identification_t *id;
2174
2175 id = get_other_eap_id(this);
2176 pools = linked_list_create_from_enumerator(
2177 this->peer_cfg->create_pool_enumerator(this->peer_cfg));
2178 hydra->attributes->release_address(hydra->attributes, pools, vip, id);
2179 pools->destroy(pools);
2180 }
2181 vip->destroy(vip);
2182 }
2183
2184 /* unset SA after here to avoid usage by the listeners */
2185 charon->bus->set_sa(charon->bus, NULL);
2186
2187 array_destroy(this->child_sas);
2188 DESTROY_IF(this->task_manager);
2189 DESTROY_IF(this->keymat);
2190 array_destroy(this->attributes);
2191 array_destroy(this->my_vips);
2192 array_destroy(this->other_vips);
2193 array_destroy_offset(this->peer_addresses, offsetof(host_t, destroy));
2194 #ifdef ME
2195 if (this->is_mediation_server)
2196 {
2197 charon->mediation_manager->remove(charon->mediation_manager,
2198 this->ike_sa_id);
2199 }
2200 DESTROY_IF(this->server_reflexive_host);
2201 chunk_free(&this->connect_id);
2202 #endif /* ME */
2203 free(this->nat_detection_dest.ptr);
2204
2205 DESTROY_IF(this->my_host);
2206 DESTROY_IF(this->other_host);
2207 DESTROY_IF(this->my_id);
2208 DESTROY_IF(this->other_id);
2209 DESTROY_IF(this->local_host);
2210 DESTROY_IF(this->remote_host);
2211
2212 DESTROY_IF(this->ike_cfg);
2213 DESTROY_IF(this->peer_cfg);
2214 DESTROY_IF(this->proposal);
2215 this->my_auth->destroy(this->my_auth);
2216 this->other_auth->destroy(this->other_auth);
2217 array_destroy_offset(this->my_auths, offsetof(auth_cfg_t, destroy));
2218 array_destroy_offset(this->other_auths, offsetof(auth_cfg_t, destroy));
2219
2220 this->ike_sa_id->destroy(this->ike_sa_id);
2221 free(this);
2222 }
2223
2224 /*
2225 * Described in header.
2226 */
2227 ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id, bool initiator,
2228 ike_version_t version)
2229 {
2230 private_ike_sa_t *this;
2231 static refcount_t unique_id = 0;
2232
2233 if (version == IKE_ANY)
2234 { /* prefer IKEv2 if protocol not specified */
2235 #ifdef USE_IKEV2
2236 version = IKEV2;
2237 #else
2238 version = IKEV1;
2239 #endif
2240 }
2241
2242 INIT(this,
2243 .public = {
2244 .get_version = _get_version,
2245 .get_state = _get_state,
2246 .set_state = _set_state,
2247 .get_name = _get_name,
2248 .get_statistic = _get_statistic,
2249 .set_statistic = _set_statistic,
2250 .process_message = _process_message,
2251 .initiate = _initiate,
2252 .retry_initiate = _retry_initiate,
2253 .get_ike_cfg = _get_ike_cfg,
2254 .set_ike_cfg = _set_ike_cfg,
2255 .get_peer_cfg = _get_peer_cfg,
2256 .set_peer_cfg = _set_peer_cfg,
2257 .get_auth_cfg = _get_auth_cfg,
2258 .create_auth_cfg_enumerator = _create_auth_cfg_enumerator,
2259 .add_auth_cfg = _add_auth_cfg,
2260 .get_proposal = _get_proposal,
2261 .set_proposal = _set_proposal,
2262 .get_id = _get_id,
2263 .get_my_host = _get_my_host,
2264 .set_my_host = _set_my_host,
2265 .get_other_host = _get_other_host,
2266 .set_other_host = _set_other_host,
2267 .set_message_id = _set_message_id,
2268 .float_ports = _float_ports,
2269 .update_hosts = _update_hosts,
2270 .get_my_id = _get_my_id,
2271 .set_my_id = _set_my_id,
2272 .get_other_id = _get_other_id,
2273 .set_other_id = _set_other_id,
2274 .get_other_eap_id = _get_other_eap_id,
2275 .enable_extension = _enable_extension,
2276 .supports_extension = _supports_extension,
2277 .set_condition = _set_condition,
2278 .has_condition = _has_condition,
2279 .set_pending_updates = _set_pending_updates,
2280 .get_pending_updates = _get_pending_updates,
2281 .create_peer_address_enumerator = _create_peer_address_enumerator,
2282 .add_peer_address = _add_peer_address,
2283 .clear_peer_addresses = _clear_peer_addresses,
2284 .has_mapping_changed = _has_mapping_changed,
2285 .retransmit = _retransmit,
2286 .delete = _delete_,
2287 .destroy = _destroy,
2288 .send_dpd = _send_dpd,
2289 .send_keepalive = _send_keepalive,
2290 .get_keymat = _get_keymat,
2291 .add_child_sa = _add_child_sa,
2292 .get_child_sa = _get_child_sa,
2293 .get_child_count = _get_child_count,
2294 .create_child_sa_enumerator = _create_child_sa_enumerator,
2295 .remove_child_sa = _remove_child_sa,
2296 .rekey_child_sa = _rekey_child_sa,
2297 .delete_child_sa = _delete_child_sa,
2298 .destroy_child_sa = _destroy_child_sa,
2299 .rekey = _rekey,
2300 .reauth = _reauth,
2301 .reestablish = _reestablish,
2302 .set_auth_lifetime = _set_auth_lifetime,
2303 .roam = _roam,
2304 .inherit = _inherit,
2305 .generate_message = _generate_message,
2306 .reset = _reset,
2307 .get_unique_id = _get_unique_id,
2308 .add_virtual_ip = _add_virtual_ip,
2309 .clear_virtual_ips = _clear_virtual_ips,
2310 .create_virtual_ip_enumerator = _create_virtual_ip_enumerator,
2311 .add_configuration_attribute = _add_configuration_attribute,
2312 .set_kmaddress = _set_kmaddress,
2313 .create_task_enumerator = _create_task_enumerator,
2314 .flush_queue = _flush_queue,
2315 .queue_task = _queue_task,
2316 #ifdef ME
2317 .act_as_mediation_server = _act_as_mediation_server,
2318 .get_server_reflexive_host = _get_server_reflexive_host,
2319 .set_server_reflexive_host = _set_server_reflexive_host,
2320 .get_connect_id = _get_connect_id,
2321 .initiate_mediation = _initiate_mediation,
2322 .initiate_mediated = _initiate_mediated,
2323 .relay = _relay,
2324 .callback = _callback,
2325 .respond = _respond,
2326 #endif /* ME */
2327 },
2328 .ike_sa_id = ike_sa_id->clone(ike_sa_id),
2329 .version = version,
2330 .my_host = host_create_any(AF_INET),
2331 .other_host = host_create_any(AF_INET),
2332 .my_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2333 .other_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2334 .keymat = keymat_create(version, initiator),
2335 .state = IKE_CREATED,
2336 .stats[STAT_INBOUND] = time_monotonic(NULL),
2337 .stats[STAT_OUTBOUND] = time_monotonic(NULL),
2338 .my_auth = auth_cfg_create(),
2339 .other_auth = auth_cfg_create(),
2340 .my_auths = array_create(0, 0),
2341 .other_auths = array_create(0, 0),
2342 .attributes = array_create(sizeof(attribute_entry_t), 0),
2343 .unique_id = ref_get(&unique_id),
2344 .keepalive_interval = lib->settings->get_time(lib->settings,
2345 "%s.keep_alive", KEEPALIVE_INTERVAL, charon->name),
2346 .retry_initiate_interval = lib->settings->get_time(lib->settings,
2347 "%s.retry_initiate_interval", 0, charon->name),
2348 .flush_auth_cfg = lib->settings->get_bool(lib->settings,
2349 "%s.flush_auth_cfg", FALSE, charon->name),
2350 );
2351
2352 if (version == IKEV2)
2353 { /* always supported with IKEv2 */
2354 enable_extension(this, EXT_DPD);
2355 }
2356
2357 this->task_manager = task_manager_create(&this->public);
2358 this->my_host->set_port(this->my_host,
2359 charon->socket->get_port(charon->socket, FALSE));
2360
2361 if (!this->task_manager || !this->keymat)
2362 {
2363 DBG1(DBG_IKE, "IKE version %d not supported", this->version);
2364 destroy(this);
2365 return NULL;
2366 }
2367 return &this->public;
2368 }