Inherit virtual IP and attributes from old to new, not from new to old
[strongswan.git] / src / libcharon / sa / ike_sa.c
1 /*
2 * Copyright (C) 2006-2012 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/linked_list.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 (as auth_cfg_t)
99 */
100 auth_cfg_t *my_auth;
101
102 /**
103 * list of completed local authentication rounds
104 */
105 linked_list_t *my_auths;
106
107 /**
108 * list of completed remote authentication rounds
109 */
110 linked_list_t *other_auths;
111
112 /**
113 * currently used authentication constraints, remote (as auth_cfg_t)
114 */
115 auth_cfg_t *other_auth;
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 * Linked List containing the child sa's of the current IKE_SA.
176 */
177 linked_list_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 linked_list_t *my_vips;
188
189 /**
190 * Virtual IPs on remote host
191 */
192 linked_list_t *other_vips;
193
194 /**
195 * List of configuration attributes (attribute_entry_t)
196 */
197 linked_list_t *attributes;
198
199 /**
200 * list of peer's addresses, additional ones transmitted via MOBIKE
201 */
202 linked_list_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 enumerator = this->child_sas->create_enumerator(this->child_sas);
286 while (enumerator->enumerate(enumerator, &child_sa))
287 {
288 child_sa->get_usestats(child_sa, inbound, &current, NULL);
289 use_time = max(use_time, current);
290 }
291 enumerator->destroy(enumerator);
292
293 return use_time;
294 }
295
296 METHOD(ike_sa_t, get_unique_id, u_int32_t,
297 private_ike_sa_t *this)
298 {
299 return this->unique_id;
300 }
301
302 METHOD(ike_sa_t, get_name, char*,
303 private_ike_sa_t *this)
304 {
305 if (this->peer_cfg)
306 {
307 return this->peer_cfg->get_name(this->peer_cfg);
308 }
309 return "(unnamed)";
310 }
311
312 METHOD(ike_sa_t, get_statistic, u_int32_t,
313 private_ike_sa_t *this, statistic_t kind)
314 {
315 if (kind < STAT_MAX)
316 {
317 return this->stats[kind];
318 }
319 return 0;
320 }
321
322 METHOD(ike_sa_t, set_statistic, void,
323 private_ike_sa_t *this, statistic_t kind, u_int32_t value)
324 {
325 if (kind < STAT_MAX)
326 {
327 this->stats[kind] = value;
328 }
329 }
330
331 METHOD(ike_sa_t, get_my_host, host_t*,
332 private_ike_sa_t *this)
333 {
334 return this->my_host;
335 }
336
337 METHOD(ike_sa_t, set_my_host, void,
338 private_ike_sa_t *this, host_t *me)
339 {
340 DESTROY_IF(this->my_host);
341 this->my_host = me;
342 }
343
344 METHOD(ike_sa_t, get_other_host, host_t*,
345 private_ike_sa_t *this)
346 {
347 return this->other_host;
348 }
349
350 METHOD(ike_sa_t, set_other_host, void,
351 private_ike_sa_t *this, host_t *other)
352 {
353 DESTROY_IF(this->other_host);
354 this->other_host = other;
355 }
356
357 METHOD(ike_sa_t, get_peer_cfg, peer_cfg_t*,
358 private_ike_sa_t *this)
359 {
360 return this->peer_cfg;
361 }
362
363 METHOD(ike_sa_t, set_peer_cfg, void,
364 private_ike_sa_t *this, peer_cfg_t *peer_cfg)
365 {
366 peer_cfg->get_ref(peer_cfg);
367 DESTROY_IF(this->peer_cfg);
368 this->peer_cfg = peer_cfg;
369
370 if (this->ike_cfg == NULL)
371 {
372 this->ike_cfg = peer_cfg->get_ike_cfg(peer_cfg);
373 this->ike_cfg->get_ref(this->ike_cfg);
374 }
375 }
376
377 METHOD(ike_sa_t, get_auth_cfg, auth_cfg_t*,
378 private_ike_sa_t *this, bool local)
379 {
380 if (local)
381 {
382 return this->my_auth;
383 }
384 return this->other_auth;
385 }
386
387 METHOD(ike_sa_t, add_auth_cfg, void,
388 private_ike_sa_t *this, bool local, auth_cfg_t *cfg)
389 {
390 if (local)
391 {
392 this->my_auths->insert_last(this->my_auths, cfg);
393 }
394 else
395 {
396 this->other_auths->insert_last(this->other_auths, cfg);
397 }
398 }
399
400 METHOD(ike_sa_t, create_auth_cfg_enumerator, enumerator_t*,
401 private_ike_sa_t *this, bool local)
402 {
403 if (local)
404 {
405 return this->my_auths->create_enumerator(this->my_auths);
406 }
407 return this->other_auths->create_enumerator(this->other_auths);
408 }
409
410 /**
411 * Flush the stored authentication round information
412 */
413 static void flush_auth_cfgs(private_ike_sa_t *this)
414 {
415 auth_cfg_t *cfg;
416
417 this->my_auth->purge(this->my_auth, FALSE);
418 this->other_auth->purge(this->other_auth, FALSE);
419
420 while (this->my_auths->remove_last(this->my_auths,
421 (void**)&cfg) == SUCCESS)
422 {
423 cfg->destroy(cfg);
424 }
425 while (this->other_auths->remove_last(this->other_auths,
426 (void**)&cfg) == SUCCESS)
427 {
428 cfg->destroy(cfg);
429 }
430 }
431
432 METHOD(ike_sa_t, get_proposal, proposal_t*,
433 private_ike_sa_t *this)
434 {
435 return this->proposal;
436 }
437
438 METHOD(ike_sa_t, set_proposal, void,
439 private_ike_sa_t *this, proposal_t *proposal)
440 {
441 DESTROY_IF(this->proposal);
442 this->proposal = proposal->clone(proposal);
443 }
444
445 METHOD(ike_sa_t, set_message_id, void,
446 private_ike_sa_t *this, bool initiate, u_int32_t mid)
447 {
448 if (initiate)
449 {
450 this->task_manager->reset(this->task_manager, mid, UINT_MAX);
451 }
452 else
453 {
454 this->task_manager->reset(this->task_manager, UINT_MAX, mid);
455 }
456 }
457
458 METHOD(ike_sa_t, send_keepalive, void,
459 private_ike_sa_t *this)
460 {
461 send_keepalive_job_t *job;
462 time_t last_out, now, diff;
463
464 if (!(this->conditions & COND_NAT_HERE) || this->keepalive_interval == 0)
465 { /* disable keep alives if we are not NATed anymore */
466 return;
467 }
468
469 last_out = get_use_time(this, FALSE);
470 now = time_monotonic(NULL);
471
472 diff = now - last_out;
473
474 if (diff >= this->keepalive_interval)
475 {
476 packet_t *packet;
477 chunk_t data;
478
479 packet = packet_create();
480 packet->set_source(packet, this->my_host->clone(this->my_host));
481 packet->set_destination(packet, this->other_host->clone(this->other_host));
482 data.ptr = malloc(1);
483 data.ptr[0] = 0xFF;
484 data.len = 1;
485 packet->set_data(packet, data);
486 DBG1(DBG_IKE, "sending keep alive to %#H", this->other_host);
487 charon->sender->send_no_marker(charon->sender, packet);
488 diff = 0;
489 }
490 job = send_keepalive_job_create(this->ike_sa_id);
491 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
492 this->keepalive_interval - diff);
493 }
494
495 METHOD(ike_sa_t, get_ike_cfg, ike_cfg_t*,
496 private_ike_sa_t *this)
497 {
498 return this->ike_cfg;
499 }
500
501 METHOD(ike_sa_t, set_ike_cfg, void,
502 private_ike_sa_t *this, ike_cfg_t *ike_cfg)
503 {
504 ike_cfg->get_ref(ike_cfg);
505 this->ike_cfg = ike_cfg;
506 }
507
508 METHOD(ike_sa_t, enable_extension, void,
509 private_ike_sa_t *this, ike_extension_t extension)
510 {
511 this->extensions |= extension;
512 }
513
514 METHOD(ike_sa_t, supports_extension, bool,
515 private_ike_sa_t *this, ike_extension_t extension)
516 {
517 return (this->extensions & extension) != FALSE;
518 }
519
520 METHOD(ike_sa_t, has_condition, bool,
521 private_ike_sa_t *this, ike_condition_t condition)
522 {
523 return (this->conditions & condition) != FALSE;
524 }
525
526 METHOD(ike_sa_t, set_condition, void,
527 private_ike_sa_t *this, ike_condition_t condition, bool enable)
528 {
529 if (has_condition(this, condition) != enable)
530 {
531 if (enable)
532 {
533 this->conditions |= condition;
534 switch (condition)
535 {
536 case COND_NAT_HERE:
537 DBG1(DBG_IKE, "local host is behind NAT, sending keep alives");
538 this->conditions |= COND_NAT_ANY;
539 send_keepalive(this);
540 break;
541 case COND_NAT_THERE:
542 DBG1(DBG_IKE, "remote host is behind NAT");
543 this->conditions |= COND_NAT_ANY;
544 break;
545 case COND_NAT_FAKE:
546 DBG1(DBG_IKE, "faking NAT situation to enforce UDP encapsulation");
547 this->conditions |= COND_NAT_ANY;
548 break;
549 default:
550 break;
551 }
552 }
553 else
554 {
555 this->conditions &= ~condition;
556 switch (condition)
557 {
558 case COND_NAT_HERE:
559 case COND_NAT_FAKE:
560 case COND_NAT_THERE:
561 set_condition(this, COND_NAT_ANY,
562 has_condition(this, COND_NAT_HERE) ||
563 has_condition(this, COND_NAT_THERE) ||
564 has_condition(this, COND_NAT_FAKE));
565 break;
566 default:
567 break;
568 }
569 }
570 }
571 }
572
573 METHOD(ike_sa_t, send_dpd, status_t,
574 private_ike_sa_t *this)
575 {
576 job_t *job;
577 time_t diff, delay;
578 bool task_queued = FALSE;
579
580 if (this->state == IKE_PASSIVE)
581 {
582 return INVALID_STATE;
583 }
584 delay = this->peer_cfg->get_dpd(this->peer_cfg);
585 if (this->task_manager->busy(this->task_manager))
586 {
587 /* an exchange is in the air, no need to start a DPD check */
588 diff = 0;
589 }
590 else
591 {
592 /* check if there was any inbound traffic */
593 time_t last_in, now;
594 last_in = get_use_time(this, TRUE);
595 now = time_monotonic(NULL);
596 diff = now - last_in;
597 if (!delay || diff >= delay)
598 {
599 /* too long ago, initiate dead peer detection */
600 DBG1(DBG_IKE, "sending DPD request");
601 this->task_manager->queue_dpd(this->task_manager);
602 task_queued = TRUE;
603 diff = 0;
604 }
605 }
606 /* recheck in "interval" seconds */
607 if (delay)
608 {
609 job = (job_t*)send_dpd_job_create(this->ike_sa_id);
610 lib->scheduler->schedule_job(lib->scheduler, job, delay - diff);
611 }
612 if (task_queued)
613 {
614 return this->task_manager->initiate(this->task_manager);
615 }
616 return SUCCESS;
617 }
618
619 METHOD(ike_sa_t, get_state, ike_sa_state_t,
620 private_ike_sa_t *this)
621 {
622 return this->state;
623 }
624
625 METHOD(ike_sa_t, set_state, void,
626 private_ike_sa_t *this, ike_sa_state_t state)
627 {
628 bool trigger_dpd = FALSE;
629
630 DBG2(DBG_IKE, "IKE_SA %s[%d] state change: %N => %N",
631 get_name(this), this->unique_id,
632 ike_sa_state_names, this->state,
633 ike_sa_state_names, state);
634
635 switch (state)
636 {
637 case IKE_ESTABLISHED:
638 {
639 if (this->state == IKE_CONNECTING ||
640 this->state == IKE_PASSIVE)
641 {
642 job_t *job;
643 u_int32_t t;
644
645 /* calculate rekey, reauth and lifetime */
646 this->stats[STAT_ESTABLISHED] = time_monotonic(NULL);
647
648 /* schedule rekeying if we have a time which is smaller than
649 * an already scheduled rekeying */
650 t = this->peer_cfg->get_rekey_time(this->peer_cfg, TRUE);
651 if (t && (this->stats[STAT_REKEY] == 0 ||
652 (this->stats[STAT_REKEY] > t + this->stats[STAT_ESTABLISHED])))
653 {
654 this->stats[STAT_REKEY] = t + this->stats[STAT_ESTABLISHED];
655 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, FALSE);
656 lib->scheduler->schedule_job(lib->scheduler, job, t);
657 DBG1(DBG_IKE, "scheduling rekeying in %ds", t);
658 }
659 t = this->peer_cfg->get_reauth_time(this->peer_cfg, TRUE);
660 if (t && (this->stats[STAT_REAUTH] == 0 ||
661 (this->stats[STAT_REAUTH] > t + this->stats[STAT_ESTABLISHED])))
662 {
663 this->stats[STAT_REAUTH] = t + this->stats[STAT_ESTABLISHED];
664 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE);
665 lib->scheduler->schedule_job(lib->scheduler, job, t);
666 DBG1(DBG_IKE, "scheduling reauthentication in %ds", t);
667 }
668 t = this->peer_cfg->get_over_time(this->peer_cfg);
669 if (this->stats[STAT_REKEY] || this->stats[STAT_REAUTH])
670 {
671 if (this->stats[STAT_REAUTH] == 0)
672 {
673 this->stats[STAT_DELETE] = this->stats[STAT_REKEY];
674 }
675 else if (this->stats[STAT_REKEY] == 0)
676 {
677 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH];
678 }
679 else
680 {
681 this->stats[STAT_DELETE] = min(this->stats[STAT_REKEY],
682 this->stats[STAT_REAUTH]);
683 }
684 this->stats[STAT_DELETE] += t;
685 t = this->stats[STAT_DELETE] - this->stats[STAT_ESTABLISHED];
686 job = (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE);
687 lib->scheduler->schedule_job(lib->scheduler, job, t);
688 DBG1(DBG_IKE, "maximum IKE_SA lifetime %ds", t);
689 }
690 trigger_dpd = this->peer_cfg->get_dpd(this->peer_cfg);
691 }
692 break;
693 }
694 default:
695 break;
696 }
697 charon->bus->ike_state_change(charon->bus, &this->public, state);
698 this->state = state;
699
700 if (trigger_dpd)
701 {
702 if (supports_extension(this, EXT_DPD))
703 {
704 send_dpd(this);
705 }
706 else
707 {
708 DBG1(DBG_IKE, "DPD not supported by peer, disabled");
709 }
710 }
711 }
712
713 METHOD(ike_sa_t, reset, void,
714 private_ike_sa_t *this)
715 {
716 /* the responder ID is reset, as peer may choose another one */
717 if (this->ike_sa_id->is_initiator(this->ike_sa_id))
718 {
719 this->ike_sa_id->set_responder_spi(this->ike_sa_id, 0);
720 }
721
722 set_state(this, IKE_CREATED);
723
724 flush_auth_cfgs(this);
725
726 this->keymat->destroy(this->keymat);
727 this->keymat = keymat_create(this->version,
728 this->ike_sa_id->is_initiator(this->ike_sa_id));
729
730 this->task_manager->reset(this->task_manager, 0, 0);
731 }
732
733 METHOD(ike_sa_t, get_keymat, keymat_t*,
734 private_ike_sa_t *this)
735 {
736 return this->keymat;
737 }
738
739 METHOD(ike_sa_t, add_virtual_ip, void,
740 private_ike_sa_t *this, bool local, host_t *ip)
741 {
742 if (local)
743 {
744 char *iface;
745
746 if (hydra->kernel_interface->get_interface(hydra->kernel_interface,
747 this->my_host, &iface))
748 {
749 DBG1(DBG_IKE, "installing new virtual IP %H", ip);
750 if (hydra->kernel_interface->add_ip(hydra->kernel_interface,
751 ip, -1, iface) == SUCCESS)
752 {
753 this->my_vips->insert_last(this->my_vips, ip->clone(ip));
754 }
755 else
756 {
757 DBG1(DBG_IKE, "installing virtual IP %H failed", ip);
758 }
759 free(iface);
760 }
761 else
762 {
763 DBG1(DBG_IKE, "looking up interface for virtual IP %H failed", ip);
764 }
765 }
766 else
767 {
768 this->other_vips->insert_last(this->other_vips, ip->clone(ip));
769 }
770 }
771
772
773 METHOD(ike_sa_t, clear_virtual_ips, void,
774 private_ike_sa_t *this, bool local)
775 {
776 linked_list_t *vips = local ? this->my_vips : this->other_vips;
777 host_t *vip;
778
779 while (vips->remove_first(vips, (void**)&vip) == SUCCESS)
780 {
781 if (local)
782 {
783 hydra->kernel_interface->del_ip(hydra->kernel_interface,
784 vip, -1, TRUE);
785 }
786 vip->destroy(vip);
787 }
788 }
789
790 METHOD(ike_sa_t, create_virtual_ip_enumerator, enumerator_t*,
791 private_ike_sa_t *this, bool local)
792 {
793 if (local)
794 {
795 return this->my_vips->create_enumerator(this->my_vips);
796 }
797 return this->other_vips->create_enumerator(this->other_vips);
798 }
799
800 METHOD(ike_sa_t, add_peer_address, void,
801 private_ike_sa_t *this, host_t *host)
802 {
803 this->peer_addresses->insert_last(this->peer_addresses, host);
804 }
805
806 METHOD(ike_sa_t, create_peer_address_enumerator, enumerator_t*,
807 private_ike_sa_t *this)
808 {
809 if (this->peer_addresses->get_count(this->peer_addresses))
810 {
811 return this->peer_addresses->create_enumerator(this->peer_addresses);
812 }
813 /* in case we don't have MOBIKE */
814 return enumerator_create_single(this->other_host, NULL);
815 }
816
817 METHOD(ike_sa_t, clear_peer_addresses, void,
818 private_ike_sa_t *this)
819 {
820 enumerator_t *enumerator;
821 host_t *host;
822
823 enumerator = this->peer_addresses->create_enumerator(this->peer_addresses);
824 while (enumerator->enumerate(enumerator, (void**)&host))
825 {
826 this->peer_addresses->remove_at(this->peer_addresses,
827 enumerator);
828 host->destroy(host);
829 }
830 enumerator->destroy(enumerator);
831 }
832
833 METHOD(ike_sa_t, has_mapping_changed, bool,
834 private_ike_sa_t *this, chunk_t hash)
835 {
836 if (this->nat_detection_dest.ptr == NULL)
837 {
838 this->nat_detection_dest = chunk_clone(hash);
839 return FALSE;
840 }
841 if (chunk_equals(hash, this->nat_detection_dest))
842 {
843 return FALSE;
844 }
845 free(this->nat_detection_dest.ptr);
846 this->nat_detection_dest = chunk_clone(hash);
847 return TRUE;
848 }
849
850 METHOD(ike_sa_t, set_pending_updates, void,
851 private_ike_sa_t *this, u_int32_t updates)
852 {
853 this->pending_updates = updates;
854 }
855
856 METHOD(ike_sa_t, get_pending_updates, u_int32_t,
857 private_ike_sa_t *this)
858 {
859 return this->pending_updates;
860 }
861
862 METHOD(ike_sa_t, float_ports, void,
863 private_ike_sa_t *this)
864 {
865 /* do not switch if we have a custom port from MOBIKE/NAT */
866 if (this->my_host->get_port(this->my_host) ==
867 charon->socket->get_port(charon->socket, FALSE))
868 {
869 this->my_host->set_port(this->my_host,
870 charon->socket->get_port(charon->socket, TRUE));
871 }
872 if (this->other_host->get_port(this->other_host) == IKEV2_UDP_PORT)
873 {
874 this->other_host->set_port(this->other_host, IKEV2_NATT_PORT);
875 }
876 }
877
878 METHOD(ike_sa_t, update_hosts, void,
879 private_ike_sa_t *this, host_t *me, host_t *other, bool force)
880 {
881 bool update = FALSE;
882
883 if (me == NULL)
884 {
885 me = this->my_host;
886 }
887 if (other == NULL)
888 {
889 other = this->other_host;
890 }
891
892 /* apply hosts on first received message */
893 if (this->my_host->is_anyaddr(this->my_host) ||
894 this->other_host->is_anyaddr(this->other_host))
895 {
896 set_my_host(this, me->clone(me));
897 set_other_host(this, other->clone(other));
898 update = TRUE;
899 }
900 else
901 {
902 /* update our address in any case */
903 if (!me->equals(me, this->my_host))
904 {
905 set_my_host(this, me->clone(me));
906 update = TRUE;
907 }
908
909 if (!other->equals(other, this->other_host))
910 {
911 /* update others address if we are NOT NATed */
912 if (force || !has_condition(this, COND_NAT_HERE))
913 {
914 set_other_host(this, other->clone(other));
915 update = TRUE;
916 }
917 }
918 }
919
920 /* update all associated CHILD_SAs, if required */
921 if (update)
922 {
923 enumerator_t *enumerator;
924 child_sa_t *child_sa;
925
926 enumerator = this->child_sas->create_enumerator(this->child_sas);
927 while (enumerator->enumerate(enumerator, (void**)&child_sa))
928 {
929 if (child_sa->update(child_sa, this->my_host,
930 this->other_host, this->my_vips,
931 has_condition(this, COND_NAT_ANY)) == NOT_SUPPORTED)
932 {
933 this->public.rekey_child_sa(&this->public,
934 child_sa->get_protocol(child_sa),
935 child_sa->get_spi(child_sa, TRUE));
936 }
937 }
938 enumerator->destroy(enumerator);
939 }
940 }
941
942 METHOD(ike_sa_t, generate_message, status_t,
943 private_ike_sa_t *this, message_t *message, packet_t **packet)
944 {
945 status_t status;
946
947 if (message->is_encoded(message))
948 { /* already done */
949 *packet = message->get_packet(message);
950 return SUCCESS;
951 }
952 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
953 message->set_ike_sa_id(message, this->ike_sa_id);
954 charon->bus->message(charon->bus, message, FALSE, TRUE);
955 status = message->generate(message, this->keymat, packet);
956 if (status == SUCCESS)
957 {
958 charon->bus->message(charon->bus, message, FALSE, FALSE);
959 }
960 return status;
961 }
962
963 METHOD(ike_sa_t, set_kmaddress, void,
964 private_ike_sa_t *this, host_t *local, host_t *remote)
965 {
966 DESTROY_IF(this->local_host);
967 DESTROY_IF(this->remote_host);
968 this->local_host = local->clone(local);
969 this->remote_host = remote->clone(remote);
970 }
971
972 #ifdef ME
973 METHOD(ike_sa_t, act_as_mediation_server, void,
974 private_ike_sa_t *this)
975 {
976 charon->mediation_manager->update_sa_id(charon->mediation_manager,
977 this->other_id, this->ike_sa_id);
978 this->is_mediation_server = TRUE;
979 }
980
981 METHOD(ike_sa_t, get_server_reflexive_host, host_t*,
982 private_ike_sa_t *this)
983 {
984 return this->server_reflexive_host;
985 }
986
987 METHOD(ike_sa_t, set_server_reflexive_host, void,
988 private_ike_sa_t *this, host_t *host)
989 {
990 DESTROY_IF(this->server_reflexive_host);
991 this->server_reflexive_host = host;
992 }
993
994 METHOD(ike_sa_t, get_connect_id, chunk_t,
995 private_ike_sa_t *this)
996 {
997 return this->connect_id;
998 }
999
1000 METHOD(ike_sa_t, respond, status_t,
1001 private_ike_sa_t *this, identification_t *peer_id, chunk_t connect_id)
1002 {
1003 ike_me_t *task = ike_me_create(&this->public, TRUE);
1004 task->respond(task, peer_id, connect_id);
1005 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1006 return this->task_manager->initiate(this->task_manager);
1007 }
1008
1009 METHOD(ike_sa_t, callback, status_t,
1010 private_ike_sa_t *this, identification_t *peer_id)
1011 {
1012 ike_me_t *task = ike_me_create(&this->public, TRUE);
1013 task->callback(task, peer_id);
1014 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1015 return this->task_manager->initiate(this->task_manager);
1016 }
1017
1018 METHOD(ike_sa_t, relay, status_t,
1019 private_ike_sa_t *this, identification_t *requester, chunk_t connect_id,
1020 chunk_t connect_key, linked_list_t *endpoints, bool response)
1021 {
1022 ike_me_t *task = ike_me_create(&this->public, TRUE);
1023 task->relay(task, requester, connect_id, connect_key, endpoints, response);
1024 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1025 return this->task_manager->initiate(this->task_manager);
1026 }
1027
1028 METHOD(ike_sa_t, initiate_mediation, status_t,
1029 private_ike_sa_t *this, peer_cfg_t *mediated_cfg)
1030 {
1031 ike_me_t *task = ike_me_create(&this->public, TRUE);
1032 task->connect(task, mediated_cfg->get_peer_id(mediated_cfg));
1033 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1034 return this->task_manager->initiate(this->task_manager);
1035 }
1036
1037 METHOD(ike_sa_t, initiate_mediated, status_t,
1038 private_ike_sa_t *this, host_t *me, host_t *other, chunk_t connect_id)
1039 {
1040 set_my_host(this, me->clone(me));
1041 set_other_host(this, other->clone(other));
1042 chunk_free(&this->connect_id);
1043 this->connect_id = chunk_clone(connect_id);
1044 return this->task_manager->initiate(this->task_manager);
1045 }
1046 #endif /* ME */
1047
1048 /**
1049 * Resolve DNS host in configuration
1050 */
1051 static void resolve_hosts(private_ike_sa_t *this)
1052 {
1053 host_t *host;
1054
1055 if (this->remote_host)
1056 {
1057 host = this->remote_host->clone(this->remote_host);
1058 host->set_port(host, IKEV2_UDP_PORT);
1059 }
1060 else
1061 {
1062 char *other_addr;
1063 u_int16_t other_port;
1064
1065 other_addr = this->ike_cfg->get_other_addr(this->ike_cfg, NULL);
1066 other_port = this->ike_cfg->get_other_port(this->ike_cfg);
1067 host = host_create_from_dns(other_addr, 0, other_port);
1068 }
1069 if (host)
1070 {
1071 set_other_host(this, host);
1072 }
1073
1074 if (this->local_host)
1075 {
1076 host = this->local_host->clone(this->local_host);
1077 host->set_port(host, charon->socket->get_port(charon->socket, FALSE));
1078 }
1079 else
1080 {
1081 char *my_addr;
1082 u_int16_t my_port;
1083 int family = 0;
1084
1085 /* use same address family as for other */
1086 if (!this->other_host->is_anyaddr(this->other_host))
1087 {
1088 family = this->other_host->get_family(this->other_host);
1089 }
1090 my_addr = this->ike_cfg->get_my_addr(this->ike_cfg, NULL);
1091 my_port = this->ike_cfg->get_my_port(this->ike_cfg);
1092 host = host_create_from_dns(my_addr, family, my_port);
1093
1094 if (host && host->is_anyaddr(host) &&
1095 !this->other_host->is_anyaddr(this->other_host))
1096 {
1097 host->destroy(host);
1098 host = hydra->kernel_interface->get_source_addr(
1099 hydra->kernel_interface, this->other_host, NULL);
1100 if (host)
1101 {
1102 host->set_port(host, this->ike_cfg->get_my_port(this->ike_cfg));
1103 }
1104 else
1105 { /* fallback to address family specific %any(6), if configured */
1106 host = host_create_from_dns(my_addr, 0, my_port);
1107 }
1108 }
1109 }
1110 if (host)
1111 {
1112 set_my_host(this, host);
1113 }
1114 }
1115
1116 METHOD(ike_sa_t, initiate, status_t,
1117 private_ike_sa_t *this, child_cfg_t *child_cfg, u_int32_t reqid,
1118 traffic_selector_t *tsi, traffic_selector_t *tsr)
1119 {
1120 bool defer_initiate = FALSE;
1121
1122 if (this->state == IKE_CREATED)
1123 {
1124 if (this->my_host->is_anyaddr(this->my_host) ||
1125 this->other_host->is_anyaddr(this->other_host))
1126 {
1127 resolve_hosts(this);
1128 }
1129
1130 if (this->other_host->is_anyaddr(this->other_host)
1131 #ifdef ME
1132 && !this->peer_cfg->get_mediated_by(this->peer_cfg)
1133 #endif /* ME */
1134 )
1135 {
1136 char *addr = this->ike_cfg->get_other_addr(this->ike_cfg, NULL);
1137 bool is_anyaddr = streq(addr, "%any") || streq(addr, "%any6");
1138
1139 if (is_anyaddr || !this->retry_initiate_interval)
1140 {
1141 if (is_anyaddr)
1142 {
1143 DBG1(DBG_IKE, "unable to initiate to %s", addr);
1144 }
1145 else
1146 {
1147 DBG1(DBG_IKE, "unable to resolve %s, initiate aborted",
1148 addr);
1149 }
1150 DESTROY_IF(child_cfg);
1151 charon->bus->alert(charon->bus, ALERT_PEER_ADDR_FAILED);
1152 return DESTROY_ME;
1153 }
1154 DBG1(DBG_IKE, "unable to resolve %s, retrying in %ds",
1155 addr, this->retry_initiate_interval);
1156 defer_initiate = TRUE;
1157 }
1158
1159 set_condition(this, COND_ORIGINAL_INITIATOR, TRUE);
1160 this->task_manager->queue_ike(this->task_manager);
1161 }
1162
1163 #ifdef ME
1164 if (this->peer_cfg->is_mediation(this->peer_cfg))
1165 {
1166 if (this->state == IKE_ESTABLISHED)
1167 {
1168 /* mediation connection is already established, retrigger state
1169 * change to notify bus listeners */
1170 DBG1(DBG_IKE, "mediation connection is already up");
1171 set_state(this, IKE_ESTABLISHED);
1172 }
1173 DESTROY_IF(child_cfg);
1174 }
1175 else
1176 #endif /* ME */
1177 if (child_cfg)
1178 {
1179 /* normal IKE_SA with CHILD_SA */
1180 this->task_manager->queue_child(this->task_manager, child_cfg, reqid,
1181 tsi, tsr);
1182 #ifdef ME
1183 if (this->peer_cfg->get_mediated_by(this->peer_cfg))
1184 {
1185 /* mediated connection, initiate mediation process */
1186 job_t *job = (job_t*)initiate_mediation_job_create(this->ike_sa_id);
1187 lib->processor->queue_job(lib->processor, job);
1188 return SUCCESS;
1189 }
1190 #endif /* ME */
1191 }
1192
1193 if (defer_initiate)
1194 {
1195 if (!this->retry_initiate_queued)
1196 {
1197 job_t *job = (job_t*)retry_initiate_job_create(this->ike_sa_id);
1198 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
1199 this->retry_initiate_interval);
1200 this->retry_initiate_queued = TRUE;
1201 }
1202 return SUCCESS;
1203 }
1204 this->retry_initiate_queued = FALSE;
1205 return this->task_manager->initiate(this->task_manager);
1206 }
1207
1208 METHOD(ike_sa_t, retry_initiate, status_t,
1209 private_ike_sa_t *this)
1210 {
1211 if (this->retry_initiate_queued)
1212 {
1213 this->retry_initiate_queued = FALSE;
1214 return initiate(this, NULL, 0, NULL, NULL);
1215 }
1216 return SUCCESS;
1217 }
1218
1219 METHOD(ike_sa_t, process_message, status_t,
1220 private_ike_sa_t *this, message_t *message)
1221 {
1222 status_t status;
1223
1224 if (this->state == IKE_PASSIVE)
1225 { /* do not handle messages in passive state */
1226 return FAILED;
1227 }
1228 switch (message->get_exchange_type(message))
1229 {
1230 case ID_PROT:
1231 case AGGRESSIVE:
1232 case IKE_SA_INIT:
1233 case IKE_AUTH:
1234 if (this->state != IKE_CREATED &&
1235 this->state != IKE_CONNECTING)
1236 {
1237 DBG1(DBG_IKE, "ignoring %N in established IKE_SA state",
1238 exchange_type_names, message->get_exchange_type(message));
1239 return FAILED;
1240 }
1241 break;
1242 default:
1243 break;
1244 }
1245 if (message->get_major_version(message) != this->version)
1246 {
1247 DBG1(DBG_IKE, "ignoring %N IKEv%u exchange on %N SA",
1248 exchange_type_names, message->get_exchange_type(message),
1249 message->get_major_version(message),
1250 ike_version_names, this->version);
1251 /* TODO-IKEv1: fall back to IKEv1 if we receive an IKEv1
1252 * INVALID_MAJOR_VERSION on an IKEv2 SA. */
1253 return FAILED;
1254 }
1255 status = this->task_manager->process_message(this->task_manager, message);
1256 if (this->flush_auth_cfg && this->state == IKE_ESTABLISHED)
1257 {
1258 /* authentication completed */
1259 this->flush_auth_cfg = FALSE;
1260 flush_auth_cfgs(this);
1261 }
1262 return status;
1263 }
1264
1265 METHOD(ike_sa_t, get_id, ike_sa_id_t*,
1266 private_ike_sa_t *this)
1267 {
1268 return this->ike_sa_id;
1269 }
1270
1271 METHOD(ike_sa_t, get_version, ike_version_t,
1272 private_ike_sa_t *this)
1273 {
1274 return this->version;
1275 }
1276
1277 METHOD(ike_sa_t, get_my_id, identification_t*,
1278 private_ike_sa_t *this)
1279 {
1280 return this->my_id;
1281 }
1282
1283 METHOD(ike_sa_t, set_my_id, void,
1284 private_ike_sa_t *this, identification_t *me)
1285 {
1286 DESTROY_IF(this->my_id);
1287 this->my_id = me;
1288 }
1289
1290 METHOD(ike_sa_t, get_other_id, identification_t*,
1291 private_ike_sa_t *this)
1292 {
1293 return this->other_id;
1294 }
1295
1296 METHOD(ike_sa_t, get_other_eap_id, identification_t*,
1297 private_ike_sa_t *this)
1298 {
1299 identification_t *id = NULL, *current;
1300 enumerator_t *enumerator;
1301 auth_cfg_t *cfg;
1302
1303 enumerator = this->other_auths->create_enumerator(this->other_auths);
1304 while (enumerator->enumerate(enumerator, &cfg))
1305 {
1306 /* prefer EAP-Identity of last round */
1307 current = cfg->get(cfg, AUTH_RULE_EAP_IDENTITY);
1308 if (!current || current->get_type(current) == ID_ANY)
1309 {
1310 current = cfg->get(cfg, AUTH_RULE_XAUTH_IDENTITY);
1311 }
1312 if (!current || current->get_type(current) == ID_ANY)
1313 {
1314 current = cfg->get(cfg, AUTH_RULE_IDENTITY);
1315 }
1316 if (current && current->get_type(current) != ID_ANY)
1317 {
1318 id = current;
1319 continue;
1320 }
1321 }
1322 enumerator->destroy(enumerator);
1323 if (id)
1324 {
1325 return id;
1326 }
1327 return this->other_id;
1328 }
1329
1330 METHOD(ike_sa_t, set_other_id, void,
1331 private_ike_sa_t *this, identification_t *other)
1332 {
1333 DESTROY_IF(this->other_id);
1334 this->other_id = other;
1335 }
1336
1337 METHOD(ike_sa_t, add_child_sa, void,
1338 private_ike_sa_t *this, child_sa_t *child_sa)
1339 {
1340 this->child_sas->insert_last(this->child_sas, child_sa);
1341 }
1342
1343 METHOD(ike_sa_t, get_child_sa, child_sa_t*,
1344 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool inbound)
1345 {
1346 enumerator_t *enumerator;
1347 child_sa_t *current, *found = NULL;
1348
1349 enumerator = this->child_sas->create_enumerator(this->child_sas);
1350 while (enumerator->enumerate(enumerator, (void**)&current))
1351 {
1352 if (current->get_spi(current, inbound) == spi &&
1353 current->get_protocol(current) == protocol)
1354 {
1355 found = current;
1356 }
1357 }
1358 enumerator->destroy(enumerator);
1359 return found;
1360 }
1361
1362 METHOD(ike_sa_t, get_child_count, int,
1363 private_ike_sa_t *this)
1364 {
1365 return this->child_sas->get_count(this->child_sas);
1366 }
1367
1368 METHOD(ike_sa_t, create_child_sa_enumerator, enumerator_t*,
1369 private_ike_sa_t *this)
1370 {
1371 return this->child_sas->create_enumerator(this->child_sas);
1372 }
1373
1374 METHOD(ike_sa_t, remove_child_sa, void,
1375 private_ike_sa_t *this, enumerator_t *enumerator)
1376 {
1377 this->child_sas->remove_at(this->child_sas, enumerator);
1378 }
1379
1380 METHOD(ike_sa_t, rekey_child_sa, status_t,
1381 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1382 {
1383 if (this->state == IKE_PASSIVE)
1384 {
1385 return INVALID_STATE;
1386 }
1387 this->task_manager->queue_child_rekey(this->task_manager, protocol, spi);
1388 return this->task_manager->initiate(this->task_manager);
1389 }
1390
1391 METHOD(ike_sa_t, delete_child_sa, status_t,
1392 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool expired)
1393 {
1394 if (this->state == IKE_PASSIVE)
1395 {
1396 return INVALID_STATE;
1397 }
1398 this->task_manager->queue_child_delete(this->task_manager,
1399 protocol, spi, expired);
1400 return this->task_manager->initiate(this->task_manager);
1401 }
1402
1403 METHOD(ike_sa_t, destroy_child_sa, status_t,
1404 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1405 {
1406 enumerator_t *enumerator;
1407 child_sa_t *child_sa;
1408 status_t status = NOT_FOUND;
1409
1410 enumerator = this->child_sas->create_enumerator(this->child_sas);
1411 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1412 {
1413 if (child_sa->get_protocol(child_sa) == protocol &&
1414 child_sa->get_spi(child_sa, TRUE) == spi)
1415 {
1416 this->child_sas->remove_at(this->child_sas, enumerator);
1417 child_sa->destroy(child_sa);
1418 status = SUCCESS;
1419 break;
1420 }
1421 }
1422 enumerator->destroy(enumerator);
1423 return status;
1424 }
1425
1426 METHOD(ike_sa_t, delete_, status_t,
1427 private_ike_sa_t *this)
1428 {
1429 switch (this->state)
1430 {
1431 case IKE_REKEYING:
1432 if (this->version == IKEV1)
1433 { /* SA has been reauthenticated, delete */
1434 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1435 break;
1436 }
1437 /* FALL */
1438 case IKE_ESTABLISHED:
1439 this->task_manager->queue_ike_delete(this->task_manager);
1440 return this->task_manager->initiate(this->task_manager);
1441 case IKE_CREATED:
1442 DBG1(DBG_IKE, "deleting unestablished IKE_SA");
1443 break;
1444 case IKE_PASSIVE:
1445 break;
1446 default:
1447 DBG1(DBG_IKE, "destroying IKE_SA in state %N "
1448 "without notification", ike_sa_state_names, this->state);
1449 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1450 break;
1451 }
1452 return DESTROY_ME;
1453 }
1454
1455 METHOD(ike_sa_t, rekey, status_t,
1456 private_ike_sa_t *this)
1457 {
1458 if (this->state == IKE_PASSIVE)
1459 {
1460 return INVALID_STATE;
1461 }
1462 this->task_manager->queue_ike_rekey(this->task_manager);
1463 return this->task_manager->initiate(this->task_manager);
1464 }
1465
1466 METHOD(ike_sa_t, reauth, status_t,
1467 private_ike_sa_t *this)
1468 {
1469 if (this->state == IKE_PASSIVE)
1470 {
1471 return INVALID_STATE;
1472 }
1473 /* we can't reauthenticate as responder when we use EAP or virtual IPs.
1474 * If the peer does not support RFC4478, there is no way to keep the
1475 * IKE_SA up. */
1476 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1477 {
1478 DBG1(DBG_IKE, "initiator did not reauthenticate as requested");
1479 if (this->other_vips->get_count(this->other_vips) != 0 ||
1480 has_condition(this, COND_XAUTH_AUTHENTICATED) ||
1481 has_condition(this, COND_EAP_AUTHENTICATED)
1482 #ifdef ME
1483 /* as mediation server we too cannot reauth the IKE_SA */
1484 || this->is_mediation_server
1485 #endif /* ME */
1486 )
1487 {
1488 time_t del, now;
1489
1490 del = this->stats[STAT_DELETE];
1491 now = time_monotonic(NULL);
1492 DBG1(DBG_IKE, "IKE_SA %s[%d] will timeout in %V",
1493 get_name(this), this->unique_id, &now, &del);
1494 return FAILED;
1495 }
1496 else
1497 {
1498 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d] actively",
1499 get_name(this), this->unique_id);
1500 }
1501 }
1502 else
1503 {
1504 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d]",
1505 get_name(this), this->unique_id);
1506 }
1507 set_condition(this, COND_REAUTHENTICATING, TRUE);
1508 this->task_manager->queue_ike_reauth(this->task_manager);
1509 return this->task_manager->initiate(this->task_manager);
1510 }
1511
1512 METHOD(ike_sa_t, reestablish, status_t,
1513 private_ike_sa_t *this)
1514 {
1515 ike_sa_t *new;
1516 host_t *host;
1517 action_t action;
1518 enumerator_t *enumerator;
1519 child_sa_t *child_sa;
1520 child_cfg_t *child_cfg;
1521 bool restart = FALSE;
1522 status_t status = FAILED;
1523
1524 if (has_condition(this, COND_REAUTHENTICATING))
1525 { /* only reauthenticate if we have children */
1526 if (this->child_sas->get_count(this->child_sas) == 0
1527 #ifdef ME
1528 /* allow reauth of mediation connections without CHILD_SAs */
1529 && !this->peer_cfg->is_mediation(this->peer_cfg)
1530 #endif /* ME */
1531 )
1532 {
1533 DBG1(DBG_IKE, "unable to reauthenticate IKE_SA, no CHILD_SA "
1534 "to recreate");
1535 }
1536 else
1537 {
1538 restart = TRUE;
1539 }
1540 }
1541 else
1542 { /* check if we have children to keep up at all */
1543 enumerator = this->child_sas->create_enumerator(this->child_sas);
1544 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1545 {
1546 if (this->state == IKE_DELETING)
1547 {
1548 action = child_sa->get_close_action(child_sa);
1549 }
1550 else
1551 {
1552 action = child_sa->get_dpd_action(child_sa);
1553 }
1554 switch (action)
1555 {
1556 case ACTION_RESTART:
1557 restart = TRUE;
1558 break;
1559 case ACTION_ROUTE:
1560 charon->traps->install(charon->traps, this->peer_cfg,
1561 child_sa->get_config(child_sa));
1562 break;
1563 default:
1564 break;
1565 }
1566 }
1567 enumerator->destroy(enumerator);
1568 #ifdef ME
1569 /* mediation connections have no children, keep them up anyway */
1570 if (this->peer_cfg->is_mediation(this->peer_cfg))
1571 {
1572 restart = TRUE;
1573 }
1574 #endif /* ME */
1575 }
1576 if (!restart)
1577 {
1578 return FAILED;
1579 }
1580
1581 /* check if we are able to reestablish this IKE_SA */
1582 if (!has_condition(this, COND_ORIGINAL_INITIATOR) &&
1583 (this->other_vips->get_count(this->other_vips) != 0 ||
1584 has_condition(this, COND_EAP_AUTHENTICATED)
1585 #ifdef ME
1586 || this->is_mediation_server
1587 #endif /* ME */
1588 ))
1589 {
1590 DBG1(DBG_IKE, "unable to reestablish IKE_SA due to asymmetric setup");
1591 return FAILED;
1592 }
1593
1594 new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager,
1595 this->version, TRUE);
1596 if (!new)
1597 {
1598 return FAILED;
1599 }
1600 new->set_peer_cfg(new, this->peer_cfg);
1601 host = this->other_host;
1602 new->set_other_host(new, host->clone(host));
1603 host = this->my_host;
1604 new->set_my_host(new, host->clone(host));
1605 /* if we already have a virtual IP, we reuse it */
1606 enumerator = this->my_vips->create_enumerator(this->my_vips);
1607 while (enumerator->enumerate(enumerator, &host))
1608 {
1609 new->add_virtual_ip(new, TRUE, host);
1610 }
1611 enumerator->destroy(enumerator);
1612
1613 #ifdef ME
1614 if (this->peer_cfg->is_mediation(this->peer_cfg))
1615 {
1616 status = new->initiate(new, NULL, 0, NULL, NULL);
1617 }
1618 else
1619 #endif /* ME */
1620 {
1621 enumerator = this->child_sas->create_enumerator(this->child_sas);
1622 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1623 {
1624 if (has_condition(this, COND_REAUTHENTICATING))
1625 {
1626 switch (child_sa->get_state(child_sa))
1627 {
1628 case CHILD_ROUTED:
1629 { /* move routed child directly */
1630 this->child_sas->remove_at(this->child_sas, enumerator);
1631 new->add_child_sa(new, child_sa);
1632 action = ACTION_NONE;
1633 break;
1634 }
1635 default:
1636 { /* initiate/queue all other CHILD_SAs */
1637 action = ACTION_RESTART;
1638 break;
1639 }
1640 }
1641 }
1642 else
1643 { /* only restart CHILD_SAs that are configured accordingly */
1644 if (this->state == IKE_DELETING)
1645 {
1646 action = child_sa->get_close_action(child_sa);
1647 }
1648 else
1649 {
1650 action = child_sa->get_dpd_action(child_sa);
1651 }
1652 }
1653 switch (action)
1654 {
1655 case ACTION_RESTART:
1656 child_cfg = child_sa->get_config(child_sa);
1657 DBG1(DBG_IKE, "restarting CHILD_SA %s",
1658 child_cfg->get_name(child_cfg));
1659 child_cfg->get_ref(child_cfg);
1660 status = new->initiate(new, child_cfg, 0, NULL, NULL);
1661 break;
1662 default:
1663 continue;
1664 }
1665 if (status == DESTROY_ME)
1666 {
1667 break;
1668 }
1669 }
1670 enumerator->destroy(enumerator);
1671 }
1672
1673 if (status == DESTROY_ME)
1674 {
1675 charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, new);
1676 status = FAILED;
1677 }
1678 else
1679 {
1680 charon->bus->ike_reestablish(charon->bus, &this->public, new);
1681 charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
1682 status = SUCCESS;
1683 }
1684 charon->bus->set_sa(charon->bus, &this->public);
1685 return status;
1686 }
1687
1688 METHOD(ike_sa_t, retransmit, status_t,
1689 private_ike_sa_t *this, u_int32_t message_id)
1690 {
1691 if (this->state == IKE_PASSIVE)
1692 {
1693 return INVALID_STATE;
1694 }
1695 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
1696 if (this->task_manager->retransmit(this->task_manager, message_id) != SUCCESS)
1697 {
1698 /* send a proper signal to brief interested bus listeners */
1699 switch (this->state)
1700 {
1701 case IKE_CONNECTING:
1702 {
1703 /* retry IKE_SA_INIT/Main Mode if we have multiple keyingtries */
1704 u_int32_t tries = this->peer_cfg->get_keyingtries(this->peer_cfg);
1705 charon->bus->alert(charon->bus, ALERT_PEER_INIT_UNREACHABLE,
1706 this->keyingtry);
1707 this->keyingtry++;
1708 if (tries == 0 || tries > this->keyingtry)
1709 {
1710 DBG1(DBG_IKE, "peer not responding, trying again (%d/%d)",
1711 this->keyingtry + 1, tries);
1712 reset(this);
1713 resolve_hosts(this);
1714 this->task_manager->queue_ike(this->task_manager);
1715 return this->task_manager->initiate(this->task_manager);
1716 }
1717 DBG1(DBG_IKE, "establishing IKE_SA failed, peer not responding");
1718 break;
1719 }
1720 case IKE_DELETING:
1721 DBG1(DBG_IKE, "proper IKE_SA delete failed, peer not responding");
1722 if (has_condition(this, COND_REAUTHENTICATING))
1723 {
1724 DBG1(DBG_IKE, "delete during reauthentication failed, "
1725 "trying to reestablish IKE_SA anyway");
1726 reestablish(this);
1727 }
1728 break;
1729 case IKE_REKEYING:
1730 DBG1(DBG_IKE, "rekeying IKE_SA failed, peer not responding");
1731 /* FALL */
1732 default:
1733 reestablish(this);
1734 break;
1735 }
1736 if (this->state != IKE_CONNECTING)
1737 {
1738 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1739 }
1740 return DESTROY_ME;
1741 }
1742 return SUCCESS;
1743 }
1744
1745 METHOD(ike_sa_t, set_auth_lifetime, status_t,
1746 private_ike_sa_t *this, u_int32_t lifetime)
1747 {
1748 u_int32_t diff, hard, soft, now;
1749 bool send_update;
1750
1751 diff = this->peer_cfg->get_over_time(this->peer_cfg);
1752 now = time_monotonic(NULL);
1753 hard = now + lifetime;
1754 soft = hard - diff;
1755
1756 /* check if we have to send an AUTH_LIFETIME to enforce the new lifetime.
1757 * We send the notify in IKE_AUTH if not yet ESTABLISHED. */
1758 send_update = this->state == IKE_ESTABLISHED && this->version == IKEV2 &&
1759 !has_condition(this, COND_ORIGINAL_INITIATOR) &&
1760 (this->other_vips->get_count(this->other_vips) != 0 ||
1761 has_condition(this, COND_EAP_AUTHENTICATED));
1762
1763 if (lifetime < diff)
1764 {
1765 this->stats[STAT_REAUTH] = now;
1766
1767 if (!send_update)
1768 {
1769 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1770 "starting reauthentication", lifetime);
1771 lib->processor->queue_job(lib->processor,
1772 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE));
1773 }
1774 }
1775 else if (this->stats[STAT_REAUTH] == 0 ||
1776 this->stats[STAT_REAUTH] > soft)
1777 {
1778 this->stats[STAT_REAUTH] = soft;
1779 if (!send_update)
1780 {
1781 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, scheduling "
1782 "reauthentication in %ds", lifetime, lifetime - diff);
1783 lib->scheduler->schedule_job(lib->scheduler,
1784 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE),
1785 lifetime - diff);
1786 }
1787 }
1788 else
1789 {
1790 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1791 "reauthentication already scheduled in %ds", lifetime,
1792 this->stats[STAT_REAUTH] - time_monotonic(NULL));
1793 send_update = FALSE;
1794 }
1795 /* give at least some seconds to reauthenticate */
1796 this->stats[STAT_DELETE] = max(hard, now + 10);
1797
1798 #ifdef USE_IKEV2
1799 if (send_update)
1800 {
1801 ike_auth_lifetime_t *task;
1802
1803 task = ike_auth_lifetime_create(&this->public, TRUE);
1804 this->task_manager->queue_task(this->task_manager, &task->task);
1805 return this->task_manager->initiate(this->task_manager);
1806 }
1807 #endif
1808 return SUCCESS;
1809 }
1810
1811 /**
1812 * Check if the current combination of source and destination address is still
1813 * valid.
1814 */
1815 static bool is_current_path_valid(private_ike_sa_t *this)
1816 {
1817 bool valid = FALSE;
1818 host_t *src;
1819 src = hydra->kernel_interface->get_source_addr(hydra->kernel_interface,
1820 this->other_host, this->my_host);
1821 if (src)
1822 {
1823 if (src->ip_equals(src, this->my_host))
1824 {
1825 valid = TRUE;
1826 }
1827 src->destroy(src);
1828 }
1829 return valid;
1830 }
1831
1832 /**
1833 * Check if we have any path avialable for this IKE SA.
1834 */
1835 static bool is_any_path_valid(private_ike_sa_t *this)
1836 {
1837 bool valid = FALSE;
1838 enumerator_t *enumerator;
1839 host_t *src = NULL, *addr;
1840
1841 DBG1(DBG_IKE, "old path is not available anymore, try to find another");
1842 enumerator = create_peer_address_enumerator(this);
1843 while (enumerator->enumerate(enumerator, &addr))
1844 {
1845 DBG1(DBG_IKE, "looking for a route to %H ...", addr);
1846 src = hydra->kernel_interface->get_source_addr(
1847 hydra->kernel_interface, addr, NULL);
1848 if (src)
1849 {
1850 break;
1851 }
1852 }
1853 enumerator->destroy(enumerator);
1854 if (src)
1855 {
1856 valid = TRUE;
1857 src->destroy(src);
1858 }
1859 return valid;
1860 }
1861
1862 METHOD(ike_sa_t, roam, status_t,
1863 private_ike_sa_t *this, bool address)
1864 {
1865 switch (this->state)
1866 {
1867 case IKE_CREATED:
1868 case IKE_DELETING:
1869 case IKE_DESTROYING:
1870 case IKE_PASSIVE:
1871 return SUCCESS;
1872 default:
1873 break;
1874 }
1875
1876 /* keep existing path if possible */
1877 if (is_current_path_valid(this))
1878 {
1879 DBG2(DBG_IKE, "keeping connection path %H - %H",
1880 this->my_host, this->other_host);
1881 set_condition(this, COND_STALE, FALSE);
1882
1883 if (supports_extension(this, EXT_MOBIKE) && address)
1884 { /* if any addresses changed, send an updated list */
1885 DBG1(DBG_IKE, "sending address list update using MOBIKE");
1886 this->task_manager->queue_mobike(this->task_manager, FALSE, TRUE);
1887 return this->task_manager->initiate(this->task_manager);
1888 }
1889 return SUCCESS;
1890 }
1891
1892 if (!is_any_path_valid(this))
1893 {
1894 DBG1(DBG_IKE, "no route found to reach %H, MOBIKE update deferred",
1895 this->other_host);
1896 set_condition(this, COND_STALE, TRUE);
1897 return SUCCESS;
1898 }
1899 set_condition(this, COND_STALE, FALSE);
1900
1901 /* update addresses with mobike, if supported ... */
1902 if (supports_extension(this, EXT_MOBIKE))
1903 {
1904 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1905 { /* responder updates the peer about changed address config */
1906 DBG1(DBG_IKE, "sending address list update using MOBIKE, "
1907 "implicitly requesting an address change");
1908 address = TRUE;
1909 }
1910 else
1911 {
1912 DBG1(DBG_IKE, "requesting address change using MOBIKE");
1913 }
1914 this->task_manager->queue_mobike(this->task_manager, TRUE, address);
1915 return this->task_manager->initiate(this->task_manager);
1916 }
1917
1918 /* ... reauth if not */
1919 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1920 { /* responder does not reauthenticate */
1921 set_condition(this, COND_STALE, TRUE);
1922 return SUCCESS;
1923 }
1924 DBG1(DBG_IKE, "reauthenticating IKE_SA due to address change");
1925 /* since our previous path is not valid anymore, try and find a new one */
1926 resolve_hosts(this);
1927 return reauth(this);
1928 }
1929
1930 METHOD(ike_sa_t, add_configuration_attribute, void,
1931 private_ike_sa_t *this, attribute_handler_t *handler,
1932 configuration_attribute_type_t type, chunk_t data)
1933 {
1934 attribute_entry_t *entry = malloc_thing(attribute_entry_t);
1935
1936 entry->handler = handler;
1937 entry->type = type;
1938 entry->data = chunk_clone(data);
1939
1940 this->attributes->insert_last(this->attributes, entry);
1941 }
1942
1943 METHOD(ike_sa_t, create_task_enumerator, enumerator_t*,
1944 private_ike_sa_t *this, task_queue_t queue)
1945 {
1946 return this->task_manager->create_task_enumerator(this->task_manager, queue);
1947 }
1948
1949 METHOD(ike_sa_t, flush_queue, void,
1950 private_ike_sa_t *this, task_queue_t queue)
1951 {
1952 this->task_manager->flush_queue(this->task_manager, queue);
1953 }
1954
1955 METHOD(ike_sa_t, queue_task, void,
1956 private_ike_sa_t *this, task_t *task)
1957 {
1958 this->task_manager->queue_task(this->task_manager, task);
1959 }
1960
1961 METHOD(ike_sa_t, inherit, void,
1962 private_ike_sa_t *this, ike_sa_t *other_public)
1963 {
1964 private_ike_sa_t *other = (private_ike_sa_t*)other_public;
1965 child_sa_t *child_sa;
1966 attribute_entry_t *entry;
1967 enumerator_t *enumerator;
1968 auth_cfg_t *cfg;
1969 host_t *vip;
1970
1971 /* apply hosts and ids */
1972 this->my_host->destroy(this->my_host);
1973 this->other_host->destroy(this->other_host);
1974 this->my_id->destroy(this->my_id);
1975 this->other_id->destroy(this->other_id);
1976 this->my_host = other->my_host->clone(other->my_host);
1977 this->other_host = other->other_host->clone(other->other_host);
1978 this->my_id = other->my_id->clone(other->my_id);
1979 this->other_id = other->other_id->clone(other->other_id);
1980
1981 /* apply assigned virtual IPs... */
1982 while (other->my_vips->remove_last(other->my_vips, (void**)&vip) == SUCCESS)
1983 {
1984 this->my_vips->insert_first(this->my_vips, vip);
1985 }
1986 while (other->other_vips->remove_last(other->other_vips,
1987 (void**)&vip) == SUCCESS)
1988 {
1989 this->other_vips->insert_first(this->other_vips, vip);
1990 }
1991
1992 /* authentication information */
1993 enumerator = other->my_auths->create_enumerator(other->my_auths);
1994 while (enumerator->enumerate(enumerator, &cfg))
1995 {
1996 this->my_auths->insert_last(this->my_auths, cfg->clone(cfg));
1997 }
1998 enumerator->destroy(enumerator);
1999 enumerator = other->other_auths->create_enumerator(other->other_auths);
2000 while (enumerator->enumerate(enumerator, &cfg))
2001 {
2002 this->other_auths->insert_last(this->other_auths, cfg->clone(cfg));
2003 }
2004 enumerator->destroy(enumerator);
2005
2006 /* ... and configuration attributes */
2007 while (other->attributes->remove_last(other->attributes,
2008 (void**)&entry) == SUCCESS)
2009 {
2010 this->attributes->insert_first(this->attributes, entry);
2011 }
2012
2013 /* inherit all conditions */
2014 this->conditions = other->conditions;
2015 if (this->conditions & COND_NAT_HERE)
2016 {
2017 send_keepalive(this);
2018 }
2019
2020 #ifdef ME
2021 if (other->is_mediation_server)
2022 {
2023 act_as_mediation_server(this);
2024 }
2025 else if (other->server_reflexive_host)
2026 {
2027 this->server_reflexive_host = other->server_reflexive_host->clone(
2028 other->server_reflexive_host);
2029 }
2030 #endif /* ME */
2031
2032 /* adopt all children */
2033 while (other->child_sas->remove_last(other->child_sas,
2034 (void**)&child_sa) == SUCCESS)
2035 {
2036 this->child_sas->insert_first(this->child_sas, (void*)child_sa);
2037 }
2038
2039 /* move pending tasks to the new IKE_SA */
2040 this->task_manager->adopt_tasks(this->task_manager, other->task_manager);
2041
2042 /* reauthentication timeout survives a rekeying */
2043 if (other->stats[STAT_REAUTH])
2044 {
2045 time_t reauth, delete, now = time_monotonic(NULL);
2046
2047 this->stats[STAT_REAUTH] = other->stats[STAT_REAUTH];
2048 reauth = this->stats[STAT_REAUTH] - now;
2049 delete = reauth + this->peer_cfg->get_over_time(this->peer_cfg);
2050 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH] + delete;
2051 DBG1(DBG_IKE, "rescheduling reauthentication in %ds after rekeying, "
2052 "lifetime reduced to %ds", reauth, delete);
2053 lib->scheduler->schedule_job(lib->scheduler,
2054 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE), reauth);
2055 lib->scheduler->schedule_job(lib->scheduler,
2056 (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE), delete);
2057 }
2058 }
2059
2060 METHOD(ike_sa_t, destroy, void,
2061 private_ike_sa_t *this)
2062 {
2063 attribute_entry_t *entry;
2064 host_t *vip;
2065
2066 charon->bus->set_sa(charon->bus, &this->public);
2067
2068 set_state(this, IKE_DESTROYING);
2069 DESTROY_IF(this->task_manager);
2070
2071 /* remove attributes first, as we pass the IKE_SA to the handler */
2072 while (this->attributes->remove_last(this->attributes,
2073 (void**)&entry) == SUCCESS)
2074 {
2075 hydra->attributes->release(hydra->attributes, entry->handler,
2076 this->other_id, entry->type, entry->data);
2077 free(entry->data.ptr);
2078 free(entry);
2079 }
2080 this->attributes->destroy(this->attributes);
2081
2082 this->child_sas->destroy_offset(this->child_sas, offsetof(child_sa_t, destroy));
2083
2084 /* unset SA after here to avoid usage by the listeners */
2085 charon->bus->set_sa(charon->bus, NULL);
2086
2087 DESTROY_IF(this->keymat);
2088
2089 while (this->my_vips->remove_last(this->my_vips, (void**)&vip) == SUCCESS)
2090 {
2091 hydra->kernel_interface->del_ip(hydra->kernel_interface, vip, -1, TRUE);
2092 vip->destroy(vip);
2093 }
2094 this->my_vips->destroy(this->my_vips);
2095 while (this->other_vips->remove_last(this->other_vips,
2096 (void**)&vip) == SUCCESS)
2097 {
2098 if (this->peer_cfg)
2099 {
2100 linked_list_t *pools;
2101 identification_t *id;
2102
2103 id = get_other_eap_id(this);
2104 pools = linked_list_create_from_enumerator(
2105 this->peer_cfg->create_pool_enumerator(this->peer_cfg));
2106 hydra->attributes->release_address(hydra->attributes, pools, vip, id);
2107 pools->destroy(pools);
2108 }
2109 vip->destroy(vip);
2110 }
2111 this->other_vips->destroy(this->other_vips);
2112 this->peer_addresses->destroy_offset(this->peer_addresses,
2113 offsetof(host_t, destroy));
2114 #ifdef ME
2115 if (this->is_mediation_server)
2116 {
2117 charon->mediation_manager->remove(charon->mediation_manager,
2118 this->ike_sa_id);
2119 }
2120 DESTROY_IF(this->server_reflexive_host);
2121 chunk_free(&this->connect_id);
2122 #endif /* ME */
2123 free(this->nat_detection_dest.ptr);
2124
2125 DESTROY_IF(this->my_host);
2126 DESTROY_IF(this->other_host);
2127 DESTROY_IF(this->my_id);
2128 DESTROY_IF(this->other_id);
2129 DESTROY_IF(this->local_host);
2130 DESTROY_IF(this->remote_host);
2131
2132 DESTROY_IF(this->ike_cfg);
2133 DESTROY_IF(this->peer_cfg);
2134 DESTROY_IF(this->proposal);
2135 this->my_auth->destroy(this->my_auth);
2136 this->other_auth->destroy(this->other_auth);
2137 this->my_auths->destroy_offset(this->my_auths,
2138 offsetof(auth_cfg_t, destroy));
2139 this->other_auths->destroy_offset(this->other_auths,
2140 offsetof(auth_cfg_t, destroy));
2141
2142 this->ike_sa_id->destroy(this->ike_sa_id);
2143 free(this);
2144 }
2145
2146 /*
2147 * Described in header.
2148 */
2149 ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id, bool initiator,
2150 ike_version_t version)
2151 {
2152 private_ike_sa_t *this;
2153 static u_int32_t unique_id = 0;
2154
2155 if (version == IKE_ANY)
2156 { /* prefer IKEv2 if protocol not specified */
2157 #ifdef USE_IKEV2
2158 version = IKEV2;
2159 #else
2160 version = IKEV1;
2161 #endif
2162 }
2163
2164 INIT(this,
2165 .public = {
2166 .get_version = _get_version,
2167 .get_state = _get_state,
2168 .set_state = _set_state,
2169 .get_name = _get_name,
2170 .get_statistic = _get_statistic,
2171 .set_statistic = _set_statistic,
2172 .process_message = _process_message,
2173 .initiate = _initiate,
2174 .retry_initiate = _retry_initiate,
2175 .get_ike_cfg = _get_ike_cfg,
2176 .set_ike_cfg = _set_ike_cfg,
2177 .get_peer_cfg = _get_peer_cfg,
2178 .set_peer_cfg = _set_peer_cfg,
2179 .get_auth_cfg = _get_auth_cfg,
2180 .create_auth_cfg_enumerator = _create_auth_cfg_enumerator,
2181 .add_auth_cfg = _add_auth_cfg,
2182 .get_proposal = _get_proposal,
2183 .set_proposal = _set_proposal,
2184 .get_id = _get_id,
2185 .get_my_host = _get_my_host,
2186 .set_my_host = _set_my_host,
2187 .get_other_host = _get_other_host,
2188 .set_other_host = _set_other_host,
2189 .set_message_id = _set_message_id,
2190 .float_ports = _float_ports,
2191 .update_hosts = _update_hosts,
2192 .get_my_id = _get_my_id,
2193 .set_my_id = _set_my_id,
2194 .get_other_id = _get_other_id,
2195 .set_other_id = _set_other_id,
2196 .get_other_eap_id = _get_other_eap_id,
2197 .enable_extension = _enable_extension,
2198 .supports_extension = _supports_extension,
2199 .set_condition = _set_condition,
2200 .has_condition = _has_condition,
2201 .set_pending_updates = _set_pending_updates,
2202 .get_pending_updates = _get_pending_updates,
2203 .create_peer_address_enumerator = _create_peer_address_enumerator,
2204 .add_peer_address = _add_peer_address,
2205 .clear_peer_addresses = _clear_peer_addresses,
2206 .has_mapping_changed = _has_mapping_changed,
2207 .retransmit = _retransmit,
2208 .delete = _delete_,
2209 .destroy = _destroy,
2210 .send_dpd = _send_dpd,
2211 .send_keepalive = _send_keepalive,
2212 .get_keymat = _get_keymat,
2213 .add_child_sa = _add_child_sa,
2214 .get_child_sa = _get_child_sa,
2215 .get_child_count = _get_child_count,
2216 .create_child_sa_enumerator = _create_child_sa_enumerator,
2217 .remove_child_sa = _remove_child_sa,
2218 .rekey_child_sa = _rekey_child_sa,
2219 .delete_child_sa = _delete_child_sa,
2220 .destroy_child_sa = _destroy_child_sa,
2221 .rekey = _rekey,
2222 .reauth = _reauth,
2223 .reestablish = _reestablish,
2224 .set_auth_lifetime = _set_auth_lifetime,
2225 .roam = _roam,
2226 .inherit = _inherit,
2227 .generate_message = _generate_message,
2228 .reset = _reset,
2229 .get_unique_id = _get_unique_id,
2230 .add_virtual_ip = _add_virtual_ip,
2231 .clear_virtual_ips = _clear_virtual_ips,
2232 .create_virtual_ip_enumerator = _create_virtual_ip_enumerator,
2233 .add_configuration_attribute = _add_configuration_attribute,
2234 .set_kmaddress = _set_kmaddress,
2235 .create_task_enumerator = _create_task_enumerator,
2236 .flush_queue = _flush_queue,
2237 .queue_task = _queue_task,
2238 #ifdef ME
2239 .act_as_mediation_server = _act_as_mediation_server,
2240 .get_server_reflexive_host = _get_server_reflexive_host,
2241 .set_server_reflexive_host = _set_server_reflexive_host,
2242 .get_connect_id = _get_connect_id,
2243 .initiate_mediation = _initiate_mediation,
2244 .initiate_mediated = _initiate_mediated,
2245 .relay = _relay,
2246 .callback = _callback,
2247 .respond = _respond,
2248 #endif /* ME */
2249 },
2250 .ike_sa_id = ike_sa_id->clone(ike_sa_id),
2251 .version = version,
2252 .child_sas = linked_list_create(),
2253 .my_host = host_create_any(AF_INET),
2254 .other_host = host_create_any(AF_INET),
2255 .my_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2256 .other_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2257 .keymat = keymat_create(version, initiator),
2258 .state = IKE_CREATED,
2259 .stats[STAT_INBOUND] = time_monotonic(NULL),
2260 .stats[STAT_OUTBOUND] = time_monotonic(NULL),
2261 .my_auth = auth_cfg_create(),
2262 .other_auth = auth_cfg_create(),
2263 .my_auths = linked_list_create(),
2264 .other_auths = linked_list_create(),
2265 .unique_id = ++unique_id,
2266 .peer_addresses = linked_list_create(),
2267 .my_vips = linked_list_create(),
2268 .other_vips = linked_list_create(),
2269 .attributes = linked_list_create(),
2270 .keepalive_interval = lib->settings->get_time(lib->settings,
2271 "%s.keep_alive", KEEPALIVE_INTERVAL, charon->name),
2272 .retry_initiate_interval = lib->settings->get_time(lib->settings,
2273 "%s.retry_initiate_interval", 0, charon->name),
2274 .flush_auth_cfg = lib->settings->get_bool(lib->settings,
2275 "%s.flush_auth_cfg", FALSE, charon->name),
2276 );
2277
2278 if (version == IKEV2)
2279 { /* always supported with IKEv2 */
2280 enable_extension(this, EXT_DPD);
2281 }
2282
2283 this->task_manager = task_manager_create(&this->public);
2284 this->my_host->set_port(this->my_host,
2285 charon->socket->get_port(charon->socket, FALSE));
2286
2287 if (!this->task_manager || !this->keymat)
2288 {
2289 DBG1(DBG_IKE, "IKE version %d not supported", this->version);
2290 destroy(this);
2291 return NULL;
2292 }
2293 return &this->public;
2294 }