1e3d00f0273f1588197190a7507764717557ca4c
[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 <utils/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 IP on local host, if any
186 */
187 host_t *my_virtual_ip;
188
189 /**
190 * Virtual IP on remote host, if any
191 */
192 host_t *other_virtual_ip;
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 * TRUE if we are currently reauthenticating this IKE_SA
257 */
258 bool is_reauthenticating;
259 };
260
261 /**
262 * Entry to maintain install configuration attributes during IKE_SA lifetime
263 */
264 struct attribute_entry_t {
265 /** handler used to install this attribute */
266 attribute_handler_t *handler;
267 /** attribute type */
268 configuration_attribute_type_t type;
269 /** attribute data */
270 chunk_t data;
271 };
272
273 /**
274 * get the time of the latest traffic processed by the kernel
275 */
276 static time_t get_use_time(private_ike_sa_t* this, bool inbound)
277 {
278 enumerator_t *enumerator;
279 child_sa_t *child_sa;
280 time_t use_time, current;
281
282 if (inbound)
283 {
284 use_time = this->stats[STAT_INBOUND];
285 }
286 else
287 {
288 use_time = this->stats[STAT_OUTBOUND];
289 }
290 enumerator = this->child_sas->create_enumerator(this->child_sas);
291 while (enumerator->enumerate(enumerator, &child_sa))
292 {
293 child_sa->get_usestats(child_sa, inbound, &current, NULL);
294 use_time = max(use_time, current);
295 }
296 enumerator->destroy(enumerator);
297
298 return use_time;
299 }
300
301 METHOD(ike_sa_t, get_unique_id, u_int32_t,
302 private_ike_sa_t *this)
303 {
304 return this->unique_id;
305 }
306
307 METHOD(ike_sa_t, get_name, char*,
308 private_ike_sa_t *this)
309 {
310 if (this->peer_cfg)
311 {
312 return this->peer_cfg->get_name(this->peer_cfg);
313 }
314 return "(unnamed)";
315 }
316
317 METHOD(ike_sa_t, get_statistic, u_int32_t,
318 private_ike_sa_t *this, statistic_t kind)
319 {
320 if (kind < STAT_MAX)
321 {
322 return this->stats[kind];
323 }
324 return 0;
325 }
326
327 METHOD(ike_sa_t, set_statistic, void,
328 private_ike_sa_t *this, statistic_t kind, u_int32_t value)
329 {
330 if (kind < STAT_MAX)
331 {
332 this->stats[kind] = value;
333 }
334 }
335
336 METHOD(ike_sa_t, get_my_host, host_t*,
337 private_ike_sa_t *this)
338 {
339 return this->my_host;
340 }
341
342 METHOD(ike_sa_t, set_my_host, void,
343 private_ike_sa_t *this, host_t *me)
344 {
345 DESTROY_IF(this->my_host);
346 this->my_host = me;
347 }
348
349 METHOD(ike_sa_t, get_other_host, host_t*,
350 private_ike_sa_t *this)
351 {
352 return this->other_host;
353 }
354
355 METHOD(ike_sa_t, set_other_host, void,
356 private_ike_sa_t *this, host_t *other)
357 {
358 DESTROY_IF(this->other_host);
359 this->other_host = other;
360 }
361
362 METHOD(ike_sa_t, get_peer_cfg, peer_cfg_t*,
363 private_ike_sa_t *this)
364 {
365 return this->peer_cfg;
366 }
367
368 METHOD(ike_sa_t, set_peer_cfg, void,
369 private_ike_sa_t *this, peer_cfg_t *peer_cfg)
370 {
371 peer_cfg->get_ref(peer_cfg);
372 DESTROY_IF(this->peer_cfg);
373 this->peer_cfg = peer_cfg;
374
375 if (this->ike_cfg == NULL)
376 {
377 this->ike_cfg = peer_cfg->get_ike_cfg(peer_cfg);
378 this->ike_cfg->get_ref(this->ike_cfg);
379 }
380 }
381
382 METHOD(ike_sa_t, get_auth_cfg, auth_cfg_t*,
383 private_ike_sa_t *this, bool local)
384 {
385 if (local)
386 {
387 return this->my_auth;
388 }
389 return this->other_auth;
390 }
391
392 METHOD(ike_sa_t, add_auth_cfg, void,
393 private_ike_sa_t *this, bool local, auth_cfg_t *cfg)
394 {
395 if (local)
396 {
397 this->my_auths->insert_last(this->my_auths, cfg);
398 }
399 else
400 {
401 this->other_auths->insert_last(this->other_auths, cfg);
402 }
403 }
404
405 METHOD(ike_sa_t, create_auth_cfg_enumerator, enumerator_t*,
406 private_ike_sa_t *this, bool local)
407 {
408 if (local)
409 {
410 return this->my_auths->create_enumerator(this->my_auths);
411 }
412 return this->other_auths->create_enumerator(this->other_auths);
413 }
414
415 /**
416 * Flush the stored authentication round information
417 */
418 static void flush_auth_cfgs(private_ike_sa_t *this)
419 {
420 auth_cfg_t *cfg;
421
422 this->my_auth->purge(this->my_auth, FALSE);
423 this->other_auth->purge(this->other_auth, FALSE);
424
425 while (this->my_auths->remove_last(this->my_auths,
426 (void**)&cfg) == SUCCESS)
427 {
428 cfg->destroy(cfg);
429 }
430 while (this->other_auths->remove_last(this->other_auths,
431 (void**)&cfg) == SUCCESS)
432 {
433 cfg->destroy(cfg);
434 }
435 }
436
437 METHOD(ike_sa_t, get_proposal, proposal_t*,
438 private_ike_sa_t *this)
439 {
440 return this->proposal;
441 }
442
443 METHOD(ike_sa_t, set_proposal, void,
444 private_ike_sa_t *this, proposal_t *proposal)
445 {
446 DESTROY_IF(this->proposal);
447 this->proposal = proposal->clone(proposal);
448 }
449
450 METHOD(ike_sa_t, set_message_id, void,
451 private_ike_sa_t *this, bool initiate, u_int32_t mid)
452 {
453 if (initiate)
454 {
455 this->task_manager->reset(this->task_manager, mid, UINT_MAX);
456 }
457 else
458 {
459 this->task_manager->reset(this->task_manager, UINT_MAX, mid);
460 }
461 }
462
463 METHOD(ike_sa_t, send_keepalive, void,
464 private_ike_sa_t *this)
465 {
466 send_keepalive_job_t *job;
467 time_t last_out, now, diff;
468
469 if (!(this->conditions & COND_NAT_HERE) || this->keepalive_interval == 0)
470 { /* disable keep alives if we are not NATed anymore */
471 return;
472 }
473
474 last_out = get_use_time(this, FALSE);
475 now = time_monotonic(NULL);
476
477 diff = now - last_out;
478
479 if (diff >= this->keepalive_interval)
480 {
481 packet_t *packet;
482 chunk_t data;
483
484 packet = packet_create();
485 packet->set_source(packet, this->my_host->clone(this->my_host));
486 packet->set_destination(packet, this->other_host->clone(this->other_host));
487 data.ptr = malloc(1);
488 data.ptr[0] = 0xFF;
489 data.len = 1;
490 packet->set_data(packet, data);
491 DBG1(DBG_IKE, "sending keep alive to %#H", this->other_host);
492 charon->sender->send_no_marker(charon->sender, packet);
493 diff = 0;
494 }
495 job = send_keepalive_job_create(this->ike_sa_id);
496 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
497 this->keepalive_interval - diff);
498 }
499
500 METHOD(ike_sa_t, get_ike_cfg, ike_cfg_t*,
501 private_ike_sa_t *this)
502 {
503 return this->ike_cfg;
504 }
505
506 METHOD(ike_sa_t, set_ike_cfg, void,
507 private_ike_sa_t *this, ike_cfg_t *ike_cfg)
508 {
509 ike_cfg->get_ref(ike_cfg);
510 this->ike_cfg = ike_cfg;
511 }
512
513 METHOD(ike_sa_t, enable_extension, void,
514 private_ike_sa_t *this, ike_extension_t extension)
515 {
516 this->extensions |= extension;
517 }
518
519 METHOD(ike_sa_t, supports_extension, bool,
520 private_ike_sa_t *this, ike_extension_t extension)
521 {
522 return (this->extensions & extension) != FALSE;
523 }
524
525 METHOD(ike_sa_t, has_condition, bool,
526 private_ike_sa_t *this, ike_condition_t condition)
527 {
528 return (this->conditions & condition) != FALSE;
529 }
530
531 METHOD(ike_sa_t, set_condition, void,
532 private_ike_sa_t *this, ike_condition_t condition, bool enable)
533 {
534 if (has_condition(this, condition) != enable)
535 {
536 if (enable)
537 {
538 this->conditions |= condition;
539 switch (condition)
540 {
541 case COND_NAT_HERE:
542 DBG1(DBG_IKE, "local host is behind NAT, sending keep alives");
543 this->conditions |= COND_NAT_ANY;
544 send_keepalive(this);
545 break;
546 case COND_NAT_THERE:
547 DBG1(DBG_IKE, "remote host is behind NAT");
548 this->conditions |= COND_NAT_ANY;
549 break;
550 case COND_NAT_FAKE:
551 DBG1(DBG_IKE, "faking NAT situation to enforce UDP encapsulation");
552 this->conditions |= COND_NAT_ANY;
553 break;
554 default:
555 break;
556 }
557 }
558 else
559 {
560 this->conditions &= ~condition;
561 switch (condition)
562 {
563 case COND_NAT_HERE:
564 case COND_NAT_FAKE:
565 case COND_NAT_THERE:
566 set_condition(this, COND_NAT_ANY,
567 has_condition(this, COND_NAT_HERE) ||
568 has_condition(this, COND_NAT_THERE) ||
569 has_condition(this, COND_NAT_FAKE));
570 break;
571 default:
572 break;
573 }
574 }
575 }
576 }
577
578 METHOD(ike_sa_t, send_dpd, status_t,
579 private_ike_sa_t *this)
580 {
581 job_t *job;
582 time_t diff, delay;
583
584 if (this->state == IKE_PASSIVE)
585 {
586 return INVALID_STATE;
587 }
588 delay = this->peer_cfg->get_dpd(this->peer_cfg);
589 if (this->task_manager->busy(this->task_manager))
590 {
591 /* an exchange is in the air, no need to start a DPD check */
592 diff = 0;
593 }
594 else
595 {
596 /* check if there was any inbound traffic */
597 time_t last_in, now;
598 last_in = get_use_time(this, TRUE);
599 now = time_monotonic(NULL);
600 diff = now - last_in;
601 if (!delay || diff >= delay)
602 {
603 /* to long ago, initiate dead peer detection */
604 DBG1(DBG_IKE, "sending DPD request");
605 this->task_manager->queue_dpd(this->task_manager);
606 diff = 0;
607 }
608 }
609 /* recheck in "interval" seconds */
610 if (delay)
611 {
612 job = (job_t*)send_dpd_job_create(this->ike_sa_id);
613 lib->scheduler->schedule_job(lib->scheduler, job, delay - diff);
614 }
615 return this->task_manager->initiate(this->task_manager);
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 }
691 break;
692 }
693 default:
694 break;
695 }
696 charon->bus->ike_state_change(charon->bus, &this->public, state);
697 this->state = state;
698
699 if (trigger_dpd)
700 {
701 if (supports_extension(this, EXT_DPD))
702 {
703 send_dpd(this);
704 }
705 else
706 {
707 DBG1(DBG_IKE, "DPD not supported by peer, disabled");
708 }
709 }
710 }
711
712 METHOD(ike_sa_t, reset, void,
713 private_ike_sa_t *this)
714 {
715 /* the responder ID is reset, as peer may choose another one */
716 if (this->ike_sa_id->is_initiator(this->ike_sa_id))
717 {
718 this->ike_sa_id->set_responder_spi(this->ike_sa_id, 0);
719 }
720
721 set_state(this, IKE_CREATED);
722
723 flush_auth_cfgs(this);
724
725 this->keymat->destroy(this->keymat);
726 this->keymat = keymat_create(this->version,
727 this->ike_sa_id->is_initiator(this->ike_sa_id));
728
729 this->task_manager->reset(this->task_manager, 0, 0);
730 }
731
732 METHOD(ike_sa_t, get_keymat, keymat_t*,
733 private_ike_sa_t *this)
734 {
735 return this->keymat;
736 }
737
738 METHOD(ike_sa_t, set_virtual_ip, void,
739 private_ike_sa_t *this, bool local, host_t *ip)
740 {
741 if (local)
742 {
743 DBG1(DBG_IKE, "installing new virtual IP %H", ip);
744 if (hydra->kernel_interface->add_ip(hydra->kernel_interface, ip,
745 this->my_host) == SUCCESS)
746 {
747 if (this->my_virtual_ip)
748 {
749 DBG1(DBG_IKE, "removing old virtual IP %H", this->my_virtual_ip);
750 hydra->kernel_interface->del_ip(hydra->kernel_interface,
751 this->my_virtual_ip);
752 }
753 DESTROY_IF(this->my_virtual_ip);
754 this->my_virtual_ip = ip->clone(ip);
755 }
756 else
757 {
758 DBG1(DBG_IKE, "installing virtual IP %H failed", ip);
759 this->my_virtual_ip = NULL;
760 }
761 }
762 else
763 {
764 DESTROY_IF(this->other_virtual_ip);
765 this->other_virtual_ip = ip->clone(ip);
766 }
767 }
768
769 METHOD(ike_sa_t, get_virtual_ip, host_t*,
770 private_ike_sa_t *this, bool local)
771 {
772 if (local)
773 {
774 return this->my_virtual_ip;
775 }
776 else
777 {
778 return this->other_virtual_ip;
779 }
780 }
781
782 METHOD(ike_sa_t, add_peer_address, void,
783 private_ike_sa_t *this, host_t *host)
784 {
785 this->peer_addresses->insert_last(this->peer_addresses, host);
786 }
787
788 METHOD(ike_sa_t, create_peer_address_enumerator, enumerator_t*,
789 private_ike_sa_t *this)
790 {
791 if (this->peer_addresses->get_count(this->peer_addresses))
792 {
793 return this->peer_addresses->create_enumerator(this->peer_addresses);
794 }
795 /* in case we don't have MOBIKE */
796 return enumerator_create_single(this->other_host, NULL);
797 }
798
799 METHOD(ike_sa_t, clear_peer_addresses, void,
800 private_ike_sa_t *this)
801 {
802 enumerator_t *enumerator;
803 host_t *host;
804
805 enumerator = this->peer_addresses->create_enumerator(this->peer_addresses);
806 while (enumerator->enumerate(enumerator, (void**)&host))
807 {
808 this->peer_addresses->remove_at(this->peer_addresses,
809 enumerator);
810 host->destroy(host);
811 }
812 enumerator->destroy(enumerator);
813 }
814
815 METHOD(ike_sa_t, has_mapping_changed, bool,
816 private_ike_sa_t *this, chunk_t hash)
817 {
818 if (this->nat_detection_dest.ptr == NULL)
819 {
820 this->nat_detection_dest = chunk_clone(hash);
821 return FALSE;
822 }
823 if (chunk_equals(hash, this->nat_detection_dest))
824 {
825 return FALSE;
826 }
827 free(this->nat_detection_dest.ptr);
828 this->nat_detection_dest = chunk_clone(hash);
829 return TRUE;
830 }
831
832 METHOD(ike_sa_t, set_pending_updates, void,
833 private_ike_sa_t *this, u_int32_t updates)
834 {
835 this->pending_updates = updates;
836 }
837
838 METHOD(ike_sa_t, get_pending_updates, u_int32_t,
839 private_ike_sa_t *this)
840 {
841 return this->pending_updates;
842 }
843
844 METHOD(ike_sa_t, float_ports, void,
845 private_ike_sa_t *this)
846 {
847 /* do not switch if we have a custom port from MOBIKE/NAT */
848 if (this->my_host->get_port(this->my_host) ==
849 charon->socket->get_port(charon->socket, FALSE))
850 {
851 this->my_host->set_port(this->my_host,
852 charon->socket->get_port(charon->socket, TRUE));
853 }
854 if (this->other_host->get_port(this->other_host) == IKEV2_UDP_PORT)
855 {
856 this->other_host->set_port(this->other_host, IKEV2_NATT_PORT);
857 }
858 }
859
860 METHOD(ike_sa_t, update_hosts, void,
861 private_ike_sa_t *this, host_t *me, host_t *other, bool force)
862 {
863 bool update = FALSE;
864
865 if (me == NULL)
866 {
867 me = this->my_host;
868 }
869 if (other == NULL)
870 {
871 other = this->other_host;
872 }
873
874 /* apply hosts on first received message */
875 if (this->my_host->is_anyaddr(this->my_host) ||
876 this->other_host->is_anyaddr(this->other_host))
877 {
878 set_my_host(this, me->clone(me));
879 set_other_host(this, other->clone(other));
880 update = TRUE;
881 }
882 else
883 {
884 /* update our address in any case */
885 if (!me->equals(me, this->my_host))
886 {
887 set_my_host(this, me->clone(me));
888 update = TRUE;
889 }
890
891 if (!other->equals(other, this->other_host))
892 {
893 /* update others address if we are NOT NATed */
894 if (force || !has_condition(this, COND_NAT_HERE))
895 {
896 set_other_host(this, other->clone(other));
897 update = TRUE;
898 }
899 }
900 }
901
902 /* update all associated CHILD_SAs, if required */
903 if (update)
904 {
905 enumerator_t *enumerator;
906 child_sa_t *child_sa;
907
908 enumerator = this->child_sas->create_enumerator(this->child_sas);
909 while (enumerator->enumerate(enumerator, (void**)&child_sa))
910 {
911 if (child_sa->update(child_sa, this->my_host,
912 this->other_host, this->my_virtual_ip,
913 has_condition(this, COND_NAT_ANY)) == NOT_SUPPORTED)
914 {
915 this->public.rekey_child_sa(&this->public,
916 child_sa->get_protocol(child_sa),
917 child_sa->get_spi(child_sa, TRUE));
918 }
919 }
920 enumerator->destroy(enumerator);
921 }
922 }
923
924 METHOD(ike_sa_t, generate_message, status_t,
925 private_ike_sa_t *this, message_t *message, packet_t **packet)
926 {
927 status_t status;
928
929 if (message->is_encoded(message))
930 { /* already done */
931 *packet = message->get_packet(message);
932 return SUCCESS;
933 }
934 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
935 message->set_ike_sa_id(message, this->ike_sa_id);
936 charon->bus->message(charon->bus, message, FALSE, TRUE);
937 status = message->generate(message, this->keymat, packet);
938 if (status == SUCCESS)
939 {
940 charon->bus->message(charon->bus, message, FALSE, FALSE);
941 }
942 return status;
943 }
944
945 METHOD(ike_sa_t, set_kmaddress, void,
946 private_ike_sa_t *this, host_t *local, host_t *remote)
947 {
948 DESTROY_IF(this->local_host);
949 DESTROY_IF(this->remote_host);
950 this->local_host = local->clone(local);
951 this->remote_host = remote->clone(remote);
952 }
953
954 #ifdef ME
955 METHOD(ike_sa_t, act_as_mediation_server, void,
956 private_ike_sa_t *this)
957 {
958 charon->mediation_manager->update_sa_id(charon->mediation_manager,
959 this->other_id, this->ike_sa_id);
960 this->is_mediation_server = TRUE;
961 }
962
963 METHOD(ike_sa_t, get_server_reflexive_host, host_t*,
964 private_ike_sa_t *this)
965 {
966 return this->server_reflexive_host;
967 }
968
969 METHOD(ike_sa_t, set_server_reflexive_host, void,
970 private_ike_sa_t *this, host_t *host)
971 {
972 DESTROY_IF(this->server_reflexive_host);
973 this->server_reflexive_host = host;
974 }
975
976 METHOD(ike_sa_t, get_connect_id, chunk_t,
977 private_ike_sa_t *this)
978 {
979 return this->connect_id;
980 }
981
982 METHOD(ike_sa_t, respond, status_t,
983 private_ike_sa_t *this, identification_t *peer_id, chunk_t connect_id)
984 {
985 ike_me_t *task = ike_me_create(&this->public, TRUE);
986 task->respond(task, peer_id, connect_id);
987 this->task_manager->queue_task(this->task_manager, (task_t*)task);
988 return this->task_manager->initiate(this->task_manager);
989 }
990
991 METHOD(ike_sa_t, callback, status_t,
992 private_ike_sa_t *this, identification_t *peer_id)
993 {
994 ike_me_t *task = ike_me_create(&this->public, TRUE);
995 task->callback(task, peer_id);
996 this->task_manager->queue_task(this->task_manager, (task_t*)task);
997 return this->task_manager->initiate(this->task_manager);
998 }
999
1000 METHOD(ike_sa_t, relay, status_t,
1001 private_ike_sa_t *this, identification_t *requester, chunk_t connect_id,
1002 chunk_t connect_key, linked_list_t *endpoints, bool response)
1003 {
1004 ike_me_t *task = ike_me_create(&this->public, TRUE);
1005 task->relay(task, requester, connect_id, connect_key, endpoints, response);
1006 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1007 return this->task_manager->initiate(this->task_manager);
1008 }
1009
1010 METHOD(ike_sa_t, initiate_mediation, status_t,
1011 private_ike_sa_t *this, peer_cfg_t *mediated_cfg)
1012 {
1013 ike_me_t *task = ike_me_create(&this->public, TRUE);
1014 task->connect(task, mediated_cfg->get_peer_id(mediated_cfg));
1015 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1016 return this->task_manager->initiate(this->task_manager);
1017 }
1018
1019 METHOD(ike_sa_t, initiate_mediated, status_t,
1020 private_ike_sa_t *this, host_t *me, host_t *other, chunk_t connect_id)
1021 {
1022 set_my_host(this, me->clone(me));
1023 set_other_host(this, other->clone(other));
1024 chunk_free(&this->connect_id);
1025 this->connect_id = chunk_clone(connect_id);
1026 return this->task_manager->initiate(this->task_manager);
1027 }
1028 #endif /* ME */
1029
1030 /**
1031 * Resolve DNS host in configuration
1032 */
1033 static void resolve_hosts(private_ike_sa_t *this)
1034 {
1035 host_t *host;
1036
1037 if (this->remote_host)
1038 {
1039 host = this->remote_host->clone(this->remote_host);
1040 host->set_port(host, IKEV2_UDP_PORT);
1041 }
1042 else
1043 {
1044 char *other_addr;
1045 u_int16_t other_port;
1046
1047 other_addr = this->ike_cfg->get_other_addr(this->ike_cfg, NULL);
1048 other_port = this->ike_cfg->get_other_port(this->ike_cfg);
1049 host = host_create_from_dns(other_addr, 0, other_port);
1050 }
1051 if (host)
1052 {
1053 set_other_host(this, host);
1054 }
1055
1056 if (this->local_host)
1057 {
1058 host = this->local_host->clone(this->local_host);
1059 host->set_port(host, charon->socket->get_port(charon->socket, FALSE));
1060 }
1061 else
1062 {
1063 char *my_addr;
1064 u_int16_t my_port;
1065 int family = 0;
1066
1067 /* use same address family as for other */
1068 if (!this->other_host->is_anyaddr(this->other_host))
1069 {
1070 family = this->other_host->get_family(this->other_host);
1071 }
1072 my_addr = this->ike_cfg->get_my_addr(this->ike_cfg, NULL);
1073 my_port = this->ike_cfg->get_my_port(this->ike_cfg);
1074 host = host_create_from_dns(my_addr, family, my_port);
1075
1076 if (host && host->is_anyaddr(host) &&
1077 !this->other_host->is_anyaddr(this->other_host))
1078 {
1079 host->destroy(host);
1080 host = hydra->kernel_interface->get_source_addr(
1081 hydra->kernel_interface, this->other_host, NULL);
1082 if (host)
1083 {
1084 host->set_port(host, this->ike_cfg->get_my_port(this->ike_cfg));
1085 }
1086 else
1087 { /* fallback to address family specific %any(6), if configured */
1088 host = host_create_from_dns(my_addr, 0, my_port);
1089 }
1090 }
1091 }
1092 if (host)
1093 {
1094 set_my_host(this, host);
1095 }
1096 }
1097
1098 METHOD(ike_sa_t, initiate, status_t,
1099 private_ike_sa_t *this, child_cfg_t *child_cfg, u_int32_t reqid,
1100 traffic_selector_t *tsi, traffic_selector_t *tsr)
1101 {
1102 bool defer_initiate = FALSE;
1103
1104 if (this->state == IKE_CREATED)
1105 {
1106 if (this->my_host->is_anyaddr(this->my_host) ||
1107 this->other_host->is_anyaddr(this->other_host))
1108 {
1109 resolve_hosts(this);
1110 }
1111
1112 if (this->other_host->is_anyaddr(this->other_host)
1113 #ifdef ME
1114 && !this->peer_cfg->get_mediated_by(this->peer_cfg)
1115 #endif /* ME */
1116 )
1117 {
1118 char *addr = this->ike_cfg->get_other_addr(this->ike_cfg, NULL);
1119 bool is_anyaddr = streq(addr, "%any") || streq(addr, "%any6");
1120
1121 if (is_anyaddr || !this->retry_initiate_interval)
1122 {
1123 if (is_anyaddr)
1124 {
1125 DBG1(DBG_IKE, "unable to initiate to %s", addr);
1126 }
1127 else
1128 {
1129 DBG1(DBG_IKE, "unable to resolve %s, initiate aborted",
1130 addr);
1131 }
1132 DESTROY_IF(child_cfg);
1133 charon->bus->alert(charon->bus, ALERT_PEER_ADDR_FAILED);
1134 return DESTROY_ME;
1135 }
1136 DBG1(DBG_IKE, "unable to resolve %s, retrying in %ds",
1137 addr, this->retry_initiate_interval);
1138 defer_initiate = TRUE;
1139 }
1140
1141 set_condition(this, COND_ORIGINAL_INITIATOR, TRUE);
1142 this->task_manager->queue_ike(this->task_manager);
1143 }
1144
1145 #ifdef ME
1146 if (this->peer_cfg->is_mediation(this->peer_cfg))
1147 {
1148 if (this->state == IKE_ESTABLISHED)
1149 {
1150 /* mediation connection is already established, retrigger state
1151 * change to notify bus listeners */
1152 DBG1(DBG_IKE, "mediation connection is already up");
1153 set_state(this, IKE_ESTABLISHED);
1154 }
1155 DESTROY_IF(child_cfg);
1156 }
1157 else
1158 #endif /* ME */
1159 if (child_cfg)
1160 {
1161 /* normal IKE_SA with CHILD_SA */
1162 this->task_manager->queue_child(this->task_manager, child_cfg, reqid,
1163 tsi, tsr);
1164 #ifdef ME
1165 if (this->peer_cfg->get_mediated_by(this->peer_cfg))
1166 {
1167 /* mediated connection, initiate mediation process */
1168 job_t *job = (job_t*)initiate_mediation_job_create(this->ike_sa_id);
1169 lib->processor->queue_job(lib->processor, job);
1170 return SUCCESS;
1171 }
1172 #endif /* ME */
1173 }
1174
1175 if (defer_initiate)
1176 {
1177 if (!this->retry_initiate_queued)
1178 {
1179 job_t *job = (job_t*)retry_initiate_job_create(this->ike_sa_id);
1180 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
1181 this->retry_initiate_interval);
1182 this->retry_initiate_queued = TRUE;
1183 }
1184 return SUCCESS;
1185 }
1186 this->retry_initiate_queued = FALSE;
1187 return this->task_manager->initiate(this->task_manager);
1188 }
1189
1190 METHOD(ike_sa_t, retry_initiate, status_t,
1191 private_ike_sa_t *this)
1192 {
1193 if (this->retry_initiate_queued)
1194 {
1195 this->retry_initiate_queued = FALSE;
1196 return initiate(this, NULL, 0, NULL, NULL);
1197 }
1198 return SUCCESS;
1199 }
1200
1201 METHOD(ike_sa_t, process_message, status_t,
1202 private_ike_sa_t *this, message_t *message)
1203 {
1204 status_t status;
1205
1206 if (this->state == IKE_PASSIVE)
1207 { /* do not handle messages in passive state */
1208 return FAILED;
1209 }
1210 switch (message->get_exchange_type(message))
1211 {
1212 case ID_PROT:
1213 case AGGRESSIVE:
1214 case IKE_SA_INIT:
1215 case IKE_AUTH:
1216 if (this->state != IKE_CREATED &&
1217 this->state != IKE_CONNECTING)
1218 {
1219 DBG1(DBG_IKE, "ignoring %N in established IKE_SA state",
1220 exchange_type_names, message->get_exchange_type(message));
1221 return FAILED;
1222 }
1223 break;
1224 default:
1225 break;
1226 }
1227 if (message->get_major_version(message) != this->version)
1228 {
1229 DBG1(DBG_IKE, "ignoring %N IKEv%u exchange on %N SA",
1230 exchange_type_names, message->get_exchange_type(message),
1231 message->get_major_version(message),
1232 ike_version_names, this->version);
1233 /* TODO-IKEv1: fall back to IKEv1 if we receive an IKEv1
1234 * INVALID_MAJOR_VERSION on an IKEv2 SA. */
1235 return FAILED;
1236 }
1237 status = this->task_manager->process_message(this->task_manager, message);
1238 if (this->flush_auth_cfg && this->state == IKE_ESTABLISHED)
1239 {
1240 /* authentication completed */
1241 this->flush_auth_cfg = FALSE;
1242 flush_auth_cfgs(this);
1243 }
1244 return status;
1245 }
1246
1247 METHOD(ike_sa_t, get_id, ike_sa_id_t*,
1248 private_ike_sa_t *this)
1249 {
1250 return this->ike_sa_id;
1251 }
1252
1253 METHOD(ike_sa_t, get_version, ike_version_t,
1254 private_ike_sa_t *this)
1255 {
1256 return this->version;
1257 }
1258
1259 METHOD(ike_sa_t, get_my_id, identification_t*,
1260 private_ike_sa_t *this)
1261 {
1262 return this->my_id;
1263 }
1264
1265 METHOD(ike_sa_t, set_my_id, void,
1266 private_ike_sa_t *this, identification_t *me)
1267 {
1268 DESTROY_IF(this->my_id);
1269 this->my_id = me;
1270 }
1271
1272 METHOD(ike_sa_t, get_other_id, identification_t*,
1273 private_ike_sa_t *this)
1274 {
1275 return this->other_id;
1276 }
1277
1278 METHOD(ike_sa_t, get_other_eap_id, identification_t*,
1279 private_ike_sa_t *this)
1280 {
1281 identification_t *id = NULL, *current;
1282 enumerator_t *enumerator;
1283 auth_cfg_t *cfg;
1284
1285 enumerator = this->other_auths->create_enumerator(this->other_auths);
1286 while (enumerator->enumerate(enumerator, &cfg))
1287 {
1288 /* prefer EAP-Identity of last round */
1289 current = cfg->get(cfg, AUTH_RULE_EAP_IDENTITY);
1290 if (!current || current->get_type(current) == ID_ANY)
1291 {
1292 current = cfg->get(cfg, AUTH_RULE_XAUTH_IDENTITY);
1293 }
1294 if (!current || current->get_type(current) == ID_ANY)
1295 {
1296 current = cfg->get(cfg, AUTH_RULE_IDENTITY);
1297 }
1298 if (current && current->get_type(current) != ID_ANY)
1299 {
1300 id = current;
1301 continue;
1302 }
1303 }
1304 enumerator->destroy(enumerator);
1305 if (id)
1306 {
1307 return id;
1308 }
1309 return this->other_id;
1310 }
1311
1312 METHOD(ike_sa_t, set_other_id, void,
1313 private_ike_sa_t *this, identification_t *other)
1314 {
1315 DESTROY_IF(this->other_id);
1316 this->other_id = other;
1317 }
1318
1319 METHOD(ike_sa_t, add_child_sa, void,
1320 private_ike_sa_t *this, child_sa_t *child_sa)
1321 {
1322 this->child_sas->insert_last(this->child_sas, child_sa);
1323 }
1324
1325 METHOD(ike_sa_t, get_child_sa, child_sa_t*,
1326 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool inbound)
1327 {
1328 enumerator_t *enumerator;
1329 child_sa_t *current, *found = NULL;
1330
1331 enumerator = this->child_sas->create_enumerator(this->child_sas);
1332 while (enumerator->enumerate(enumerator, (void**)&current))
1333 {
1334 if (current->get_spi(current, inbound) == spi &&
1335 current->get_protocol(current) == protocol)
1336 {
1337 found = current;
1338 }
1339 }
1340 enumerator->destroy(enumerator);
1341 return found;
1342 }
1343
1344 METHOD(ike_sa_t, get_child_count, int,
1345 private_ike_sa_t *this)
1346 {
1347 return this->child_sas->get_count(this->child_sas);
1348 }
1349
1350 METHOD(ike_sa_t, create_child_sa_enumerator, enumerator_t*,
1351 private_ike_sa_t *this)
1352 {
1353 return this->child_sas->create_enumerator(this->child_sas);
1354 }
1355
1356 METHOD(ike_sa_t, remove_child_sa, void,
1357 private_ike_sa_t *this, enumerator_t *enumerator)
1358 {
1359 this->child_sas->remove_at(this->child_sas, enumerator);
1360 }
1361
1362 METHOD(ike_sa_t, rekey_child_sa, status_t,
1363 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1364 {
1365 if (this->state == IKE_PASSIVE)
1366 {
1367 return INVALID_STATE;
1368 }
1369 this->task_manager->queue_child_rekey(this->task_manager, protocol, spi);
1370 return this->task_manager->initiate(this->task_manager);
1371 }
1372
1373 METHOD(ike_sa_t, delete_child_sa, status_t,
1374 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool expired)
1375 {
1376 if (this->state == IKE_PASSIVE)
1377 {
1378 return INVALID_STATE;
1379 }
1380 this->task_manager->queue_child_delete(this->task_manager,
1381 protocol, spi, expired);
1382 return this->task_manager->initiate(this->task_manager);
1383 }
1384
1385 METHOD(ike_sa_t, destroy_child_sa, status_t,
1386 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1387 {
1388 enumerator_t *enumerator;
1389 child_sa_t *child_sa;
1390 status_t status = NOT_FOUND;
1391
1392 enumerator = this->child_sas->create_enumerator(this->child_sas);
1393 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1394 {
1395 if (child_sa->get_protocol(child_sa) == protocol &&
1396 child_sa->get_spi(child_sa, TRUE) == spi)
1397 {
1398 this->child_sas->remove_at(this->child_sas, enumerator);
1399 child_sa->destroy(child_sa);
1400 status = SUCCESS;
1401 break;
1402 }
1403 }
1404 enumerator->destroy(enumerator);
1405 return status;
1406 }
1407
1408 METHOD(ike_sa_t, delete_, status_t,
1409 private_ike_sa_t *this)
1410 {
1411 switch (this->state)
1412 {
1413 case IKE_REKEYING:
1414 if (this->version == IKEV1)
1415 { /* SA has been reauthenticated, delete */
1416 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1417 break;
1418 }
1419 /* FALL */
1420 case IKE_ESTABLISHED:
1421 this->task_manager->queue_ike_delete(this->task_manager);
1422 return this->task_manager->initiate(this->task_manager);
1423 case IKE_CREATED:
1424 DBG1(DBG_IKE, "deleting unestablished IKE_SA");
1425 break;
1426 case IKE_PASSIVE:
1427 break;
1428 default:
1429 DBG1(DBG_IKE, "destroying IKE_SA in state %N "
1430 "without notification", ike_sa_state_names, this->state);
1431 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1432 break;
1433 }
1434 return DESTROY_ME;
1435 }
1436
1437 METHOD(ike_sa_t, rekey, status_t,
1438 private_ike_sa_t *this)
1439 {
1440 if (this->state == IKE_PASSIVE)
1441 {
1442 return INVALID_STATE;
1443 }
1444 this->task_manager->queue_ike_rekey(this->task_manager);
1445 return this->task_manager->initiate(this->task_manager);
1446 }
1447
1448 METHOD(ike_sa_t, reauth, status_t,
1449 private_ike_sa_t *this)
1450 {
1451 if (this->state == IKE_PASSIVE)
1452 {
1453 return INVALID_STATE;
1454 }
1455 /* we can't reauthenticate as responder when we use EAP or virtual IPs.
1456 * If the peer does not support RFC4478, there is no way to keep the
1457 * IKE_SA up. */
1458 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1459 {
1460 DBG1(DBG_IKE, "initiator did not reauthenticate as requested");
1461 if (this->other_virtual_ip != NULL ||
1462 has_condition(this, COND_XAUTH_AUTHENTICATED) ||
1463 has_condition(this, COND_EAP_AUTHENTICATED)
1464 #ifdef ME
1465 /* as mediation server we too cannot reauth the IKE_SA */
1466 || this->is_mediation_server
1467 #endif /* ME */
1468 )
1469 {
1470 time_t del, now;
1471
1472 del = this->stats[STAT_DELETE];
1473 now = time_monotonic(NULL);
1474 DBG1(DBG_IKE, "IKE_SA %s[%d] will timeout in %V",
1475 get_name(this), this->unique_id, &now, &del);
1476 return FAILED;
1477 }
1478 else
1479 {
1480 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d] actively",
1481 get_name(this), this->unique_id);
1482 }
1483 }
1484 else
1485 {
1486 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d]",
1487 get_name(this), this->unique_id);
1488 }
1489 this->is_reauthenticating = TRUE;
1490 this->task_manager->queue_ike_reauth(this->task_manager);
1491 return this->task_manager->initiate(this->task_manager);
1492 }
1493
1494 METHOD(ike_sa_t, reestablish, status_t,
1495 private_ike_sa_t *this)
1496 {
1497 ike_sa_t *new;
1498 host_t *host;
1499 action_t action;
1500 enumerator_t *enumerator;
1501 child_sa_t *child_sa;
1502 child_cfg_t *child_cfg;
1503 bool restart = FALSE;
1504 status_t status = FAILED;
1505
1506 if (this->is_reauthenticating)
1507 { /* only reauthenticate if we have children */
1508 if (this->child_sas->get_count(this->child_sas) == 0
1509 #ifdef ME
1510 /* allow reauth of mediation connections without CHILD_SAs */
1511 && !this->peer_cfg->is_mediation(this->peer_cfg)
1512 #endif /* ME */
1513 )
1514 {
1515 DBG1(DBG_IKE, "unable to reauthenticate IKE_SA, no CHILD_SA "
1516 "to recreate");
1517 }
1518 else
1519 {
1520 restart = TRUE;
1521 }
1522 }
1523 else
1524 { /* check if we have children to keep up at all */
1525 enumerator = this->child_sas->create_enumerator(this->child_sas);
1526 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1527 {
1528 if (this->state == IKE_DELETING)
1529 {
1530 action = child_sa->get_close_action(child_sa);
1531 }
1532 else
1533 {
1534 action = child_sa->get_dpd_action(child_sa);
1535 }
1536 switch (action)
1537 {
1538 case ACTION_RESTART:
1539 restart = TRUE;
1540 break;
1541 case ACTION_ROUTE:
1542 charon->traps->install(charon->traps, this->peer_cfg,
1543 child_sa->get_config(child_sa));
1544 break;
1545 default:
1546 break;
1547 }
1548 }
1549 enumerator->destroy(enumerator);
1550 #ifdef ME
1551 /* mediation connections have no children, keep them up anyway */
1552 if (this->peer_cfg->is_mediation(this->peer_cfg))
1553 {
1554 restart = TRUE;
1555 }
1556 #endif /* ME */
1557 }
1558 if (!restart)
1559 {
1560 return FAILED;
1561 }
1562
1563 /* check if we are able to reestablish this IKE_SA */
1564 if (!has_condition(this, COND_ORIGINAL_INITIATOR) &&
1565 (this->other_virtual_ip != NULL ||
1566 has_condition(this, COND_EAP_AUTHENTICATED)
1567 #ifdef ME
1568 || this->is_mediation_server
1569 #endif /* ME */
1570 ))
1571 {
1572 DBG1(DBG_IKE, "unable to reestablish IKE_SA due to asymmetric setup");
1573 return FAILED;
1574 }
1575
1576 new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager,
1577 this->version, TRUE);
1578 if (!new)
1579 {
1580 return FAILED;
1581 }
1582 new->set_peer_cfg(new, this->peer_cfg);
1583 host = this->other_host;
1584 new->set_other_host(new, host->clone(host));
1585 host = this->my_host;
1586 new->set_my_host(new, host->clone(host));
1587 /* if we already have a virtual IP, we reuse it */
1588 host = this->my_virtual_ip;
1589 if (host)
1590 {
1591 new->set_virtual_ip(new, TRUE, host);
1592 }
1593
1594 #ifdef ME
1595 if (this->peer_cfg->is_mediation(this->peer_cfg))
1596 {
1597 status = new->initiate(new, NULL, 0, NULL, NULL);
1598 }
1599 else
1600 #endif /* ME */
1601 {
1602 enumerator = this->child_sas->create_enumerator(this->child_sas);
1603 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1604 {
1605 if (this->is_reauthenticating)
1606 {
1607 switch (child_sa->get_state(child_sa))
1608 {
1609 case CHILD_ROUTED:
1610 { /* move routed child directly */
1611 this->child_sas->remove_at(this->child_sas, enumerator);
1612 new->add_child_sa(new, child_sa);
1613 action = ACTION_NONE;
1614 break;
1615 }
1616 default:
1617 { /* initiate/queue all other CHILD_SAs */
1618 action = ACTION_RESTART;
1619 break;
1620 }
1621 }
1622 }
1623 else
1624 { /* only restart CHILD_SAs that are configured accordingly */
1625 if (this->state == IKE_DELETING)
1626 {
1627 action = child_sa->get_close_action(child_sa);
1628 }
1629 else
1630 {
1631 action = child_sa->get_dpd_action(child_sa);
1632 }
1633 }
1634 switch (action)
1635 {
1636 case ACTION_RESTART:
1637 child_cfg = child_sa->get_config(child_sa);
1638 DBG1(DBG_IKE, "restarting CHILD_SA %s",
1639 child_cfg->get_name(child_cfg));
1640 child_cfg->get_ref(child_cfg);
1641 status = new->initiate(new, child_cfg, 0, NULL, NULL);
1642 break;
1643 default:
1644 continue;
1645 }
1646 if (status == DESTROY_ME)
1647 {
1648 break;
1649 }
1650 }
1651 enumerator->destroy(enumerator);
1652 }
1653
1654 if (status == DESTROY_ME)
1655 {
1656 charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, new);
1657 status = FAILED;
1658 }
1659 else
1660 {
1661 charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
1662 status = SUCCESS;
1663 }
1664 charon->bus->set_sa(charon->bus, &this->public);
1665 return status;
1666 }
1667
1668 METHOD(ike_sa_t, retransmit, status_t,
1669 private_ike_sa_t *this, u_int32_t message_id)
1670 {
1671 if (this->state == IKE_PASSIVE)
1672 {
1673 return INVALID_STATE;
1674 }
1675 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
1676 if (this->task_manager->retransmit(this->task_manager, message_id) != SUCCESS)
1677 {
1678 /* send a proper signal to brief interested bus listeners */
1679 switch (this->state)
1680 {
1681 case IKE_CONNECTING:
1682 {
1683 /* retry IKE_SA_INIT/Main Mode if we have multiple keyingtries */
1684 u_int32_t tries = this->peer_cfg->get_keyingtries(this->peer_cfg);
1685 this->keyingtry++;
1686 if (tries == 0 || tries > this->keyingtry)
1687 {
1688 DBG1(DBG_IKE, "peer not responding, trying again (%d/%d)",
1689 this->keyingtry + 1, tries);
1690 reset(this);
1691 resolve_hosts(this);
1692 this->task_manager->queue_ike(this->task_manager);
1693 return this->task_manager->initiate(this->task_manager);
1694 }
1695 DBG1(DBG_IKE, "establishing IKE_SA failed, peer not responding");
1696 break;
1697 }
1698 case IKE_DELETING:
1699 DBG1(DBG_IKE, "proper IKE_SA delete failed, peer not responding");
1700 if (this->is_reauthenticating)
1701 {
1702 DBG1(DBG_IKE, "delete during reauthentication failed, "
1703 "trying to reestablish IKE_SA anyway");
1704 reestablish(this);
1705 }
1706 break;
1707 case IKE_REKEYING:
1708 DBG1(DBG_IKE, "rekeying IKE_SA failed, peer not responding");
1709 /* FALL */
1710 default:
1711 reestablish(this);
1712 break;
1713 }
1714 return DESTROY_ME;
1715 }
1716 return SUCCESS;
1717 }
1718
1719 METHOD(ike_sa_t, set_auth_lifetime, status_t,
1720 private_ike_sa_t *this, u_int32_t lifetime)
1721 {
1722 u_int32_t diff, hard, soft, now;
1723 ike_auth_lifetime_t *task;
1724 bool send_update;
1725
1726 diff = this->peer_cfg->get_over_time(this->peer_cfg);
1727 now = time_monotonic(NULL);
1728 hard = now + lifetime;
1729 soft = hard - diff;
1730
1731 /* check if we have to send an AUTH_LIFETIME to enforce the new lifetime.
1732 * We send the notify in IKE_AUTH if not yet ESTABLISHED. */
1733 send_update = this->state == IKE_ESTABLISHED && this->version == IKEV2 &&
1734 !has_condition(this, COND_ORIGINAL_INITIATOR) &&
1735 (this->other_virtual_ip != NULL ||
1736 has_condition(this, COND_EAP_AUTHENTICATED));
1737
1738 if (lifetime < diff)
1739 {
1740 this->stats[STAT_REAUTH] = now;
1741
1742 if (!send_update)
1743 {
1744 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1745 "starting reauthentication", lifetime);
1746 lib->processor->queue_job(lib->processor,
1747 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE));
1748 }
1749 }
1750 else if (this->stats[STAT_REAUTH] == 0 ||
1751 this->stats[STAT_REAUTH] > soft)
1752 {
1753 this->stats[STAT_REAUTH] = soft;
1754 if (!send_update)
1755 {
1756 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, scheduling "
1757 "reauthentication in %ds", lifetime, lifetime - diff);
1758 lib->scheduler->schedule_job(lib->scheduler,
1759 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE),
1760 lifetime - diff);
1761 }
1762 }
1763 else
1764 {
1765 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1766 "reauthentication already scheduled in %ds", lifetime,
1767 this->stats[STAT_REAUTH] - time_monotonic(NULL));
1768 send_update = FALSE;
1769 }
1770 /* give at least some seconds to reauthenticate */
1771 this->stats[STAT_DELETE] = max(hard, now + 10);
1772
1773 if (send_update)
1774 {
1775 task = ike_auth_lifetime_create(&this->public, TRUE);
1776 this->task_manager->queue_task(this->task_manager, &task->task);
1777 return this->task_manager->initiate(this->task_manager);
1778 }
1779 return SUCCESS;
1780 }
1781
1782 /**
1783 * Check if the current combination of source and destination address is still
1784 * valid.
1785 */
1786 static bool is_current_path_valid(private_ike_sa_t *this)
1787 {
1788 bool valid = FALSE;
1789 host_t *src;
1790 src = hydra->kernel_interface->get_source_addr(hydra->kernel_interface,
1791 this->other_host, this->my_host);
1792 if (src)
1793 {
1794 if (src->ip_equals(src, this->my_host))
1795 {
1796 valid = TRUE;
1797 }
1798 src->destroy(src);
1799 }
1800 return valid;
1801 }
1802
1803 /**
1804 * Check if we have any path avialable for this IKE SA.
1805 */
1806 static bool is_any_path_valid(private_ike_sa_t *this)
1807 {
1808 bool valid = FALSE;
1809 enumerator_t *enumerator;
1810 host_t *src = NULL, *addr;
1811
1812 DBG1(DBG_IKE, "old path is not available anymore, try to find another");
1813 enumerator = create_peer_address_enumerator(this);
1814 while (enumerator->enumerate(enumerator, &addr))
1815 {
1816 DBG1(DBG_IKE, "looking for a route to %H ...", addr);
1817 src = hydra->kernel_interface->get_source_addr(
1818 hydra->kernel_interface, addr, NULL);
1819 if (src)
1820 {
1821 break;
1822 }
1823 }
1824 enumerator->destroy(enumerator);
1825 if (src)
1826 {
1827 valid = TRUE;
1828 src->destroy(src);
1829 }
1830 return valid;
1831 }
1832
1833 METHOD(ike_sa_t, roam, status_t,
1834 private_ike_sa_t *this, bool address)
1835 {
1836 switch (this->state)
1837 {
1838 case IKE_CREATED:
1839 case IKE_DELETING:
1840 case IKE_DESTROYING:
1841 case IKE_PASSIVE:
1842 return SUCCESS;
1843 default:
1844 break;
1845 }
1846
1847 /* keep existing path if possible */
1848 if (is_current_path_valid(this))
1849 {
1850 DBG2(DBG_IKE, "keeping connection path %H - %H",
1851 this->my_host, this->other_host);
1852 set_condition(this, COND_STALE, FALSE);
1853
1854 if (supports_extension(this, EXT_MOBIKE) && address)
1855 { /* if any addresses changed, send an updated list */
1856 DBG1(DBG_IKE, "sending address list update using MOBIKE");
1857 this->task_manager->queue_mobike(this->task_manager, FALSE, TRUE);
1858 return this->task_manager->initiate(this->task_manager);
1859 }
1860 return SUCCESS;
1861 }
1862
1863 if (!is_any_path_valid(this))
1864 {
1865 DBG1(DBG_IKE, "no route found to reach %H, MOBIKE update deferred",
1866 this->other_host);
1867 set_condition(this, COND_STALE, TRUE);
1868 return SUCCESS;
1869 }
1870 set_condition(this, COND_STALE, FALSE);
1871
1872 /* update addresses with mobike, if supported ... */
1873 if (supports_extension(this, EXT_MOBIKE))
1874 {
1875 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1876 { /* responder updates the peer about changed address config */
1877 DBG1(DBG_IKE, "sending address list update using MOBIKE, "
1878 "implicitly requesting an address change");
1879 address = TRUE;
1880 }
1881 else
1882 {
1883 DBG1(DBG_IKE, "requesting address change using MOBIKE");
1884 }
1885 this->task_manager->queue_mobike(this->task_manager, TRUE, address);
1886 return this->task_manager->initiate(this->task_manager);
1887 }
1888
1889 /* ... reauth if not */
1890 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1891 { /* responder does not reauthenticate */
1892 set_condition(this, COND_STALE, TRUE);
1893 return SUCCESS;
1894 }
1895 DBG1(DBG_IKE, "reauthenticating IKE_SA due to address change");
1896 /* since our previous path is not valid anymore, try and find a new one */
1897 resolve_hosts(this);
1898 return reauth(this);
1899 }
1900
1901 METHOD(ike_sa_t, add_configuration_attribute, void,
1902 private_ike_sa_t *this, attribute_handler_t *handler,
1903 configuration_attribute_type_t type, chunk_t data)
1904 {
1905 attribute_entry_t *entry = malloc_thing(attribute_entry_t);
1906
1907 entry->handler = handler;
1908 entry->type = type;
1909 entry->data = chunk_clone(data);
1910
1911 this->attributes->insert_last(this->attributes, entry);
1912 }
1913
1914 METHOD(ike_sa_t, create_task_enumerator, enumerator_t*,
1915 private_ike_sa_t *this, task_queue_t queue)
1916 {
1917 return this->task_manager->create_task_enumerator(this->task_manager, queue);
1918 }
1919
1920 METHOD(ike_sa_t, flush_queue, void,
1921 private_ike_sa_t *this, task_queue_t queue)
1922 {
1923 this->task_manager->flush_queue(this->task_manager, queue);
1924 }
1925
1926 METHOD(ike_sa_t, queue_task, void,
1927 private_ike_sa_t *this, task_t *task)
1928 {
1929 this->task_manager->queue_task(this->task_manager, task);
1930 }
1931
1932 METHOD(ike_sa_t, inherit, void,
1933 private_ike_sa_t *this, ike_sa_t *other_public)
1934 {
1935 private_ike_sa_t *other = (private_ike_sa_t*)other_public;
1936 child_sa_t *child_sa;
1937 attribute_entry_t *entry;
1938 enumerator_t *enumerator;
1939 auth_cfg_t *cfg;
1940
1941 /* apply hosts and ids */
1942 this->my_host->destroy(this->my_host);
1943 this->other_host->destroy(this->other_host);
1944 this->my_id->destroy(this->my_id);
1945 this->other_id->destroy(this->other_id);
1946 this->my_host = other->my_host->clone(other->my_host);
1947 this->other_host = other->other_host->clone(other->other_host);
1948 this->my_id = other->my_id->clone(other->my_id);
1949 this->other_id = other->other_id->clone(other->other_id);
1950
1951 /* apply virtual assigned IPs... */
1952 if (other->my_virtual_ip)
1953 {
1954 this->my_virtual_ip = other->my_virtual_ip;
1955 other->my_virtual_ip = NULL;
1956 }
1957 if (other->other_virtual_ip)
1958 {
1959 this->other_virtual_ip = other->other_virtual_ip;
1960 other->other_virtual_ip = NULL;
1961 }
1962
1963 /* authentication information */
1964 enumerator = other->my_auths->create_enumerator(other->my_auths);
1965 while (enumerator->enumerate(enumerator, &cfg))
1966 {
1967 this->my_auths->insert_last(this->my_auths, cfg->clone(cfg));
1968 }
1969 enumerator->destroy(enumerator);
1970 enumerator = other->other_auths->create_enumerator(other->other_auths);
1971 while (enumerator->enumerate(enumerator, &cfg))
1972 {
1973 this->other_auths->insert_last(this->other_auths, cfg->clone(cfg));
1974 }
1975 enumerator->destroy(enumerator);
1976
1977 /* ... and configuration attributes */
1978 while (other->attributes->remove_last(other->attributes,
1979 (void**)&entry) == SUCCESS)
1980 {
1981 this->attributes->insert_first(this->attributes, entry);
1982 }
1983
1984 /* inherit all conditions */
1985 this->conditions = other->conditions;
1986 if (this->conditions & COND_NAT_HERE)
1987 {
1988 send_keepalive(this);
1989 }
1990
1991 #ifdef ME
1992 if (other->is_mediation_server)
1993 {
1994 act_as_mediation_server(this);
1995 }
1996 else if (other->server_reflexive_host)
1997 {
1998 this->server_reflexive_host = other->server_reflexive_host->clone(
1999 other->server_reflexive_host);
2000 }
2001 #endif /* ME */
2002
2003 /* adopt all children */
2004 while (other->child_sas->remove_last(other->child_sas,
2005 (void**)&child_sa) == SUCCESS)
2006 {
2007 this->child_sas->insert_first(this->child_sas, (void*)child_sa);
2008 }
2009
2010 /* move pending tasks to the new IKE_SA */
2011 this->task_manager->adopt_tasks(this->task_manager, other->task_manager);
2012
2013 /* reauthentication timeout survives a rekeying */
2014 if (other->stats[STAT_REAUTH])
2015 {
2016 time_t reauth, delete, now = time_monotonic(NULL);
2017
2018 this->stats[STAT_REAUTH] = other->stats[STAT_REAUTH];
2019 reauth = this->stats[STAT_REAUTH] - now;
2020 delete = reauth + this->peer_cfg->get_over_time(this->peer_cfg);
2021 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH] + delete;
2022 DBG1(DBG_IKE, "rescheduling reauthentication in %ds after rekeying, "
2023 "lifetime reduced to %ds", reauth, delete);
2024 lib->scheduler->schedule_job(lib->scheduler,
2025 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE), reauth);
2026 lib->scheduler->schedule_job(lib->scheduler,
2027 (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE), delete);
2028 }
2029 }
2030
2031 METHOD(ike_sa_t, destroy, void,
2032 private_ike_sa_t *this)
2033 {
2034 attribute_entry_t *entry;
2035
2036 charon->bus->set_sa(charon->bus, &this->public);
2037
2038 set_state(this, IKE_DESTROYING);
2039 DESTROY_IF(this->task_manager);
2040
2041 /* remove attributes first, as we pass the IKE_SA to the handler */
2042 while (this->attributes->remove_last(this->attributes,
2043 (void**)&entry) == SUCCESS)
2044 {
2045 hydra->attributes->release(hydra->attributes, entry->handler,
2046 this->other_id, entry->type, entry->data);
2047 free(entry->data.ptr);
2048 free(entry);
2049 }
2050 this->attributes->destroy(this->attributes);
2051
2052 this->child_sas->destroy_offset(this->child_sas, offsetof(child_sa_t, destroy));
2053
2054 /* unset SA after here to avoid usage by the listeners */
2055 charon->bus->set_sa(charon->bus, NULL);
2056
2057 DESTROY_IF(this->keymat);
2058
2059 if (this->my_virtual_ip)
2060 {
2061 hydra->kernel_interface->del_ip(hydra->kernel_interface,
2062 this->my_virtual_ip);
2063 this->my_virtual_ip->destroy(this->my_virtual_ip);
2064 }
2065 if (this->other_virtual_ip)
2066 {
2067 if (this->peer_cfg && this->peer_cfg->get_pool(this->peer_cfg))
2068 {
2069 hydra->attributes->release_address(hydra->attributes,
2070 this->peer_cfg->get_pool(this->peer_cfg),
2071 this->other_virtual_ip, get_other_eap_id(this));
2072 }
2073 this->other_virtual_ip->destroy(this->other_virtual_ip);
2074 }
2075 this->peer_addresses->destroy_offset(this->peer_addresses,
2076 offsetof(host_t, destroy));
2077 #ifdef ME
2078 if (this->is_mediation_server)
2079 {
2080 charon->mediation_manager->remove(charon->mediation_manager,
2081 this->ike_sa_id);
2082 }
2083 DESTROY_IF(this->server_reflexive_host);
2084 chunk_free(&this->connect_id);
2085 #endif /* ME */
2086 free(this->nat_detection_dest.ptr);
2087
2088 DESTROY_IF(this->my_host);
2089 DESTROY_IF(this->other_host);
2090 DESTROY_IF(this->my_id);
2091 DESTROY_IF(this->other_id);
2092 DESTROY_IF(this->local_host);
2093 DESTROY_IF(this->remote_host);
2094
2095 DESTROY_IF(this->ike_cfg);
2096 DESTROY_IF(this->peer_cfg);
2097 DESTROY_IF(this->proposal);
2098 this->my_auth->destroy(this->my_auth);
2099 this->other_auth->destroy(this->other_auth);
2100 this->my_auths->destroy_offset(this->my_auths,
2101 offsetof(auth_cfg_t, destroy));
2102 this->other_auths->destroy_offset(this->other_auths,
2103 offsetof(auth_cfg_t, destroy));
2104
2105 this->ike_sa_id->destroy(this->ike_sa_id);
2106 free(this);
2107 }
2108
2109 /*
2110 * Described in header.
2111 */
2112 ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id, bool initiator,
2113 ike_version_t version)
2114 {
2115 private_ike_sa_t *this;
2116 static u_int32_t unique_id = 0;
2117
2118 if (version == IKE_ANY)
2119 { /* prefer IKEv2 if protocol not specified */
2120 #ifdef USE_IKEV2
2121 version = IKEV2;
2122 #else
2123 version = IKEV1;
2124 #endif
2125 }
2126
2127 INIT(this,
2128 .public = {
2129 .get_version = _get_version,
2130 .get_state = _get_state,
2131 .set_state = _set_state,
2132 .get_name = _get_name,
2133 .get_statistic = _get_statistic,
2134 .set_statistic = _set_statistic,
2135 .process_message = _process_message,
2136 .initiate = _initiate,
2137 .retry_initiate = _retry_initiate,
2138 .get_ike_cfg = _get_ike_cfg,
2139 .set_ike_cfg = _set_ike_cfg,
2140 .get_peer_cfg = _get_peer_cfg,
2141 .set_peer_cfg = _set_peer_cfg,
2142 .get_auth_cfg = _get_auth_cfg,
2143 .create_auth_cfg_enumerator = _create_auth_cfg_enumerator,
2144 .add_auth_cfg = _add_auth_cfg,
2145 .get_proposal = _get_proposal,
2146 .set_proposal = _set_proposal,
2147 .get_id = _get_id,
2148 .get_my_host = _get_my_host,
2149 .set_my_host = _set_my_host,
2150 .get_other_host = _get_other_host,
2151 .set_other_host = _set_other_host,
2152 .set_message_id = _set_message_id,
2153 .float_ports = _float_ports,
2154 .update_hosts = _update_hosts,
2155 .get_my_id = _get_my_id,
2156 .set_my_id = _set_my_id,
2157 .get_other_id = _get_other_id,
2158 .set_other_id = _set_other_id,
2159 .get_other_eap_id = _get_other_eap_id,
2160 .enable_extension = _enable_extension,
2161 .supports_extension = _supports_extension,
2162 .set_condition = _set_condition,
2163 .has_condition = _has_condition,
2164 .set_pending_updates = _set_pending_updates,
2165 .get_pending_updates = _get_pending_updates,
2166 .create_peer_address_enumerator = _create_peer_address_enumerator,
2167 .add_peer_address = _add_peer_address,
2168 .clear_peer_addresses = _clear_peer_addresses,
2169 .has_mapping_changed = _has_mapping_changed,
2170 .retransmit = _retransmit,
2171 .delete = _delete_,
2172 .destroy = _destroy,
2173 .send_dpd = _send_dpd,
2174 .send_keepalive = _send_keepalive,
2175 .get_keymat = _get_keymat,
2176 .add_child_sa = _add_child_sa,
2177 .get_child_sa = _get_child_sa,
2178 .get_child_count = _get_child_count,
2179 .create_child_sa_enumerator = _create_child_sa_enumerator,
2180 .remove_child_sa = _remove_child_sa,
2181 .rekey_child_sa = _rekey_child_sa,
2182 .delete_child_sa = _delete_child_sa,
2183 .destroy_child_sa = _destroy_child_sa,
2184 .rekey = _rekey,
2185 .reauth = _reauth,
2186 .reestablish = _reestablish,
2187 .set_auth_lifetime = _set_auth_lifetime,
2188 .roam = _roam,
2189 .inherit = _inherit,
2190 .generate_message = _generate_message,
2191 .reset = _reset,
2192 .get_unique_id = _get_unique_id,
2193 .set_virtual_ip = _set_virtual_ip,
2194 .get_virtual_ip = _get_virtual_ip,
2195 .add_configuration_attribute = _add_configuration_attribute,
2196 .set_kmaddress = _set_kmaddress,
2197 .create_task_enumerator = _create_task_enumerator,
2198 .flush_queue = _flush_queue,
2199 .queue_task = _queue_task,
2200 #ifdef ME
2201 .act_as_mediation_server = _act_as_mediation_server,
2202 .get_server_reflexive_host = _get_server_reflexive_host,
2203 .set_server_reflexive_host = _set_server_reflexive_host,
2204 .get_connect_id = _get_connect_id,
2205 .initiate_mediation = _initiate_mediation,
2206 .initiate_mediated = _initiate_mediated,
2207 .relay = _relay,
2208 .callback = _callback,
2209 .respond = _respond,
2210 #endif /* ME */
2211 },
2212 .ike_sa_id = ike_sa_id->clone(ike_sa_id),
2213 .version = version,
2214 .child_sas = linked_list_create(),
2215 .my_host = host_create_any(AF_INET),
2216 .other_host = host_create_any(AF_INET),
2217 .my_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2218 .other_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2219 .keymat = keymat_create(version, initiator),
2220 .state = IKE_CREATED,
2221 .stats[STAT_INBOUND] = time_monotonic(NULL),
2222 .stats[STAT_OUTBOUND] = time_monotonic(NULL),
2223 .my_auth = auth_cfg_create(),
2224 .other_auth = auth_cfg_create(),
2225 .my_auths = linked_list_create(),
2226 .other_auths = linked_list_create(),
2227 .unique_id = ++unique_id,
2228 .peer_addresses = linked_list_create(),
2229 .attributes = linked_list_create(),
2230 .keepalive_interval = lib->settings->get_time(lib->settings,
2231 "%s.keep_alive", KEEPALIVE_INTERVAL, charon->name),
2232 .retry_initiate_interval = lib->settings->get_time(lib->settings,
2233 "%s.retry_initiate_interval", 0, charon->name),
2234 .flush_auth_cfg = lib->settings->get_bool(lib->settings,
2235 "%s.flush_auth_cfg", FALSE, charon->name),
2236 );
2237
2238 if (version == IKEV2)
2239 { /* always supported with IKEv2 */
2240 enable_extension(this, EXT_DPD);
2241 }
2242
2243 this->task_manager = task_manager_create(&this->public);
2244 this->my_host->set_port(this->my_host,
2245 charon->socket->get_port(charon->socket, FALSE));
2246
2247 if (!this->task_manager || !this->keymat)
2248 {
2249 DBG1(DBG_IKE, "IKE version %d not supported", this->version);
2250 destroy(this);
2251 return NULL;
2252 }
2253 return &this->public;
2254 }