Add an optional kernel-interface parameter to install IPs with a custom prefix
[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 DBG1(DBG_IKE, "installing new virtual IP %H", ip);
745 if (hydra->kernel_interface->add_ip(hydra->kernel_interface,
746 ip, -1, this->my_host) == SUCCESS)
747 {
748 this->my_vips->insert_last(this->my_vips, ip->clone(ip));
749 }
750 else
751 {
752 DBG1(DBG_IKE, "installing virtual IP %H failed", ip);
753 }
754 }
755 else
756 {
757 this->other_vips->insert_last(this->other_vips, ip->clone(ip));
758 }
759 }
760
761
762 METHOD(ike_sa_t, clear_virtual_ips, void,
763 private_ike_sa_t *this, bool local)
764 {
765 linked_list_t *vips = local ? this->my_vips : this->other_vips;
766 host_t *vip;
767
768 while (vips->remove_first(vips, (void**)&vip) == SUCCESS)
769 {
770 if (local)
771 {
772 hydra->kernel_interface->del_ip(hydra->kernel_interface, vip, -1);
773 }
774 vip->destroy(vip);
775 }
776 }
777
778 METHOD(ike_sa_t, create_virtual_ip_enumerator, enumerator_t*,
779 private_ike_sa_t *this, bool local)
780 {
781 if (local)
782 {
783 return this->my_vips->create_enumerator(this->my_vips);
784 }
785 return this->other_vips->create_enumerator(this->other_vips);
786 }
787
788 METHOD(ike_sa_t, add_peer_address, void,
789 private_ike_sa_t *this, host_t *host)
790 {
791 this->peer_addresses->insert_last(this->peer_addresses, host);
792 }
793
794 METHOD(ike_sa_t, create_peer_address_enumerator, enumerator_t*,
795 private_ike_sa_t *this)
796 {
797 if (this->peer_addresses->get_count(this->peer_addresses))
798 {
799 return this->peer_addresses->create_enumerator(this->peer_addresses);
800 }
801 /* in case we don't have MOBIKE */
802 return enumerator_create_single(this->other_host, NULL);
803 }
804
805 METHOD(ike_sa_t, clear_peer_addresses, void,
806 private_ike_sa_t *this)
807 {
808 enumerator_t *enumerator;
809 host_t *host;
810
811 enumerator = this->peer_addresses->create_enumerator(this->peer_addresses);
812 while (enumerator->enumerate(enumerator, (void**)&host))
813 {
814 this->peer_addresses->remove_at(this->peer_addresses,
815 enumerator);
816 host->destroy(host);
817 }
818 enumerator->destroy(enumerator);
819 }
820
821 METHOD(ike_sa_t, has_mapping_changed, bool,
822 private_ike_sa_t *this, chunk_t hash)
823 {
824 if (this->nat_detection_dest.ptr == NULL)
825 {
826 this->nat_detection_dest = chunk_clone(hash);
827 return FALSE;
828 }
829 if (chunk_equals(hash, this->nat_detection_dest))
830 {
831 return FALSE;
832 }
833 free(this->nat_detection_dest.ptr);
834 this->nat_detection_dest = chunk_clone(hash);
835 return TRUE;
836 }
837
838 METHOD(ike_sa_t, set_pending_updates, void,
839 private_ike_sa_t *this, u_int32_t updates)
840 {
841 this->pending_updates = updates;
842 }
843
844 METHOD(ike_sa_t, get_pending_updates, u_int32_t,
845 private_ike_sa_t *this)
846 {
847 return this->pending_updates;
848 }
849
850 METHOD(ike_sa_t, float_ports, void,
851 private_ike_sa_t *this)
852 {
853 /* do not switch if we have a custom port from MOBIKE/NAT */
854 if (this->my_host->get_port(this->my_host) ==
855 charon->socket->get_port(charon->socket, FALSE))
856 {
857 this->my_host->set_port(this->my_host,
858 charon->socket->get_port(charon->socket, TRUE));
859 }
860 if (this->other_host->get_port(this->other_host) == IKEV2_UDP_PORT)
861 {
862 this->other_host->set_port(this->other_host, IKEV2_NATT_PORT);
863 }
864 }
865
866 METHOD(ike_sa_t, update_hosts, void,
867 private_ike_sa_t *this, host_t *me, host_t *other, bool force)
868 {
869 bool update = FALSE;
870
871 if (me == NULL)
872 {
873 me = this->my_host;
874 }
875 if (other == NULL)
876 {
877 other = this->other_host;
878 }
879
880 /* apply hosts on first received message */
881 if (this->my_host->is_anyaddr(this->my_host) ||
882 this->other_host->is_anyaddr(this->other_host))
883 {
884 set_my_host(this, me->clone(me));
885 set_other_host(this, other->clone(other));
886 update = TRUE;
887 }
888 else
889 {
890 /* update our address in any case */
891 if (!me->equals(me, this->my_host))
892 {
893 set_my_host(this, me->clone(me));
894 update = TRUE;
895 }
896
897 if (!other->equals(other, this->other_host))
898 {
899 /* update others address if we are NOT NATed */
900 if (force || !has_condition(this, COND_NAT_HERE))
901 {
902 set_other_host(this, other->clone(other));
903 update = TRUE;
904 }
905 }
906 }
907
908 /* update all associated CHILD_SAs, if required */
909 if (update)
910 {
911 enumerator_t *enumerator;
912 child_sa_t *child_sa;
913
914 enumerator = this->child_sas->create_enumerator(this->child_sas);
915 while (enumerator->enumerate(enumerator, (void**)&child_sa))
916 {
917 if (child_sa->update(child_sa, this->my_host,
918 this->other_host, this->my_vips,
919 has_condition(this, COND_NAT_ANY)) == NOT_SUPPORTED)
920 {
921 this->public.rekey_child_sa(&this->public,
922 child_sa->get_protocol(child_sa),
923 child_sa->get_spi(child_sa, TRUE));
924 }
925 }
926 enumerator->destroy(enumerator);
927 }
928 }
929
930 METHOD(ike_sa_t, generate_message, status_t,
931 private_ike_sa_t *this, message_t *message, packet_t **packet)
932 {
933 status_t status;
934
935 if (message->is_encoded(message))
936 { /* already done */
937 *packet = message->get_packet(message);
938 return SUCCESS;
939 }
940 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
941 message->set_ike_sa_id(message, this->ike_sa_id);
942 charon->bus->message(charon->bus, message, FALSE, TRUE);
943 status = message->generate(message, this->keymat, packet);
944 if (status == SUCCESS)
945 {
946 charon->bus->message(charon->bus, message, FALSE, FALSE);
947 }
948 return status;
949 }
950
951 METHOD(ike_sa_t, set_kmaddress, void,
952 private_ike_sa_t *this, host_t *local, host_t *remote)
953 {
954 DESTROY_IF(this->local_host);
955 DESTROY_IF(this->remote_host);
956 this->local_host = local->clone(local);
957 this->remote_host = remote->clone(remote);
958 }
959
960 #ifdef ME
961 METHOD(ike_sa_t, act_as_mediation_server, void,
962 private_ike_sa_t *this)
963 {
964 charon->mediation_manager->update_sa_id(charon->mediation_manager,
965 this->other_id, this->ike_sa_id);
966 this->is_mediation_server = TRUE;
967 }
968
969 METHOD(ike_sa_t, get_server_reflexive_host, host_t*,
970 private_ike_sa_t *this)
971 {
972 return this->server_reflexive_host;
973 }
974
975 METHOD(ike_sa_t, set_server_reflexive_host, void,
976 private_ike_sa_t *this, host_t *host)
977 {
978 DESTROY_IF(this->server_reflexive_host);
979 this->server_reflexive_host = host;
980 }
981
982 METHOD(ike_sa_t, get_connect_id, chunk_t,
983 private_ike_sa_t *this)
984 {
985 return this->connect_id;
986 }
987
988 METHOD(ike_sa_t, respond, status_t,
989 private_ike_sa_t *this, identification_t *peer_id, chunk_t connect_id)
990 {
991 ike_me_t *task = ike_me_create(&this->public, TRUE);
992 task->respond(task, peer_id, connect_id);
993 this->task_manager->queue_task(this->task_manager, (task_t*)task);
994 return this->task_manager->initiate(this->task_manager);
995 }
996
997 METHOD(ike_sa_t, callback, status_t,
998 private_ike_sa_t *this, identification_t *peer_id)
999 {
1000 ike_me_t *task = ike_me_create(&this->public, TRUE);
1001 task->callback(task, peer_id);
1002 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1003 return this->task_manager->initiate(this->task_manager);
1004 }
1005
1006 METHOD(ike_sa_t, relay, status_t,
1007 private_ike_sa_t *this, identification_t *requester, chunk_t connect_id,
1008 chunk_t connect_key, linked_list_t *endpoints, bool response)
1009 {
1010 ike_me_t *task = ike_me_create(&this->public, TRUE);
1011 task->relay(task, requester, connect_id, connect_key, endpoints, response);
1012 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1013 return this->task_manager->initiate(this->task_manager);
1014 }
1015
1016 METHOD(ike_sa_t, initiate_mediation, status_t,
1017 private_ike_sa_t *this, peer_cfg_t *mediated_cfg)
1018 {
1019 ike_me_t *task = ike_me_create(&this->public, TRUE);
1020 task->connect(task, mediated_cfg->get_peer_id(mediated_cfg));
1021 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1022 return this->task_manager->initiate(this->task_manager);
1023 }
1024
1025 METHOD(ike_sa_t, initiate_mediated, status_t,
1026 private_ike_sa_t *this, host_t *me, host_t *other, chunk_t connect_id)
1027 {
1028 set_my_host(this, me->clone(me));
1029 set_other_host(this, other->clone(other));
1030 chunk_free(&this->connect_id);
1031 this->connect_id = chunk_clone(connect_id);
1032 return this->task_manager->initiate(this->task_manager);
1033 }
1034 #endif /* ME */
1035
1036 /**
1037 * Resolve DNS host in configuration
1038 */
1039 static void resolve_hosts(private_ike_sa_t *this)
1040 {
1041 host_t *host;
1042
1043 if (this->remote_host)
1044 {
1045 host = this->remote_host->clone(this->remote_host);
1046 host->set_port(host, IKEV2_UDP_PORT);
1047 }
1048 else
1049 {
1050 char *other_addr;
1051 u_int16_t other_port;
1052
1053 other_addr = this->ike_cfg->get_other_addr(this->ike_cfg, NULL);
1054 other_port = this->ike_cfg->get_other_port(this->ike_cfg);
1055 host = host_create_from_dns(other_addr, 0, other_port);
1056 }
1057 if (host)
1058 {
1059 set_other_host(this, host);
1060 }
1061
1062 if (this->local_host)
1063 {
1064 host = this->local_host->clone(this->local_host);
1065 host->set_port(host, charon->socket->get_port(charon->socket, FALSE));
1066 }
1067 else
1068 {
1069 char *my_addr;
1070 u_int16_t my_port;
1071 int family = 0;
1072
1073 /* use same address family as for other */
1074 if (!this->other_host->is_anyaddr(this->other_host))
1075 {
1076 family = this->other_host->get_family(this->other_host);
1077 }
1078 my_addr = this->ike_cfg->get_my_addr(this->ike_cfg, NULL);
1079 my_port = this->ike_cfg->get_my_port(this->ike_cfg);
1080 host = host_create_from_dns(my_addr, family, my_port);
1081
1082 if (host && host->is_anyaddr(host) &&
1083 !this->other_host->is_anyaddr(this->other_host))
1084 {
1085 host->destroy(host);
1086 host = hydra->kernel_interface->get_source_addr(
1087 hydra->kernel_interface, this->other_host, NULL);
1088 if (host)
1089 {
1090 host->set_port(host, this->ike_cfg->get_my_port(this->ike_cfg));
1091 }
1092 else
1093 { /* fallback to address family specific %any(6), if configured */
1094 host = host_create_from_dns(my_addr, 0, my_port);
1095 }
1096 }
1097 }
1098 if (host)
1099 {
1100 set_my_host(this, host);
1101 }
1102 }
1103
1104 METHOD(ike_sa_t, initiate, status_t,
1105 private_ike_sa_t *this, child_cfg_t *child_cfg, u_int32_t reqid,
1106 traffic_selector_t *tsi, traffic_selector_t *tsr)
1107 {
1108 bool defer_initiate = FALSE;
1109
1110 if (this->state == IKE_CREATED)
1111 {
1112 if (this->my_host->is_anyaddr(this->my_host) ||
1113 this->other_host->is_anyaddr(this->other_host))
1114 {
1115 resolve_hosts(this);
1116 }
1117
1118 if (this->other_host->is_anyaddr(this->other_host)
1119 #ifdef ME
1120 && !this->peer_cfg->get_mediated_by(this->peer_cfg)
1121 #endif /* ME */
1122 )
1123 {
1124 char *addr = this->ike_cfg->get_other_addr(this->ike_cfg, NULL);
1125 bool is_anyaddr = streq(addr, "%any") || streq(addr, "%any6");
1126
1127 if (is_anyaddr || !this->retry_initiate_interval)
1128 {
1129 if (is_anyaddr)
1130 {
1131 DBG1(DBG_IKE, "unable to initiate to %s", addr);
1132 }
1133 else
1134 {
1135 DBG1(DBG_IKE, "unable to resolve %s, initiate aborted",
1136 addr);
1137 }
1138 DESTROY_IF(child_cfg);
1139 charon->bus->alert(charon->bus, ALERT_PEER_ADDR_FAILED);
1140 return DESTROY_ME;
1141 }
1142 DBG1(DBG_IKE, "unable to resolve %s, retrying in %ds",
1143 addr, this->retry_initiate_interval);
1144 defer_initiate = TRUE;
1145 }
1146
1147 set_condition(this, COND_ORIGINAL_INITIATOR, TRUE);
1148 this->task_manager->queue_ike(this->task_manager);
1149 }
1150
1151 #ifdef ME
1152 if (this->peer_cfg->is_mediation(this->peer_cfg))
1153 {
1154 if (this->state == IKE_ESTABLISHED)
1155 {
1156 /* mediation connection is already established, retrigger state
1157 * change to notify bus listeners */
1158 DBG1(DBG_IKE, "mediation connection is already up");
1159 set_state(this, IKE_ESTABLISHED);
1160 }
1161 DESTROY_IF(child_cfg);
1162 }
1163 else
1164 #endif /* ME */
1165 if (child_cfg)
1166 {
1167 /* normal IKE_SA with CHILD_SA */
1168 this->task_manager->queue_child(this->task_manager, child_cfg, reqid,
1169 tsi, tsr);
1170 #ifdef ME
1171 if (this->peer_cfg->get_mediated_by(this->peer_cfg))
1172 {
1173 /* mediated connection, initiate mediation process */
1174 job_t *job = (job_t*)initiate_mediation_job_create(this->ike_sa_id);
1175 lib->processor->queue_job(lib->processor, job);
1176 return SUCCESS;
1177 }
1178 #endif /* ME */
1179 }
1180
1181 if (defer_initiate)
1182 {
1183 if (!this->retry_initiate_queued)
1184 {
1185 job_t *job = (job_t*)retry_initiate_job_create(this->ike_sa_id);
1186 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
1187 this->retry_initiate_interval);
1188 this->retry_initiate_queued = TRUE;
1189 }
1190 return SUCCESS;
1191 }
1192 this->retry_initiate_queued = FALSE;
1193 return this->task_manager->initiate(this->task_manager);
1194 }
1195
1196 METHOD(ike_sa_t, retry_initiate, status_t,
1197 private_ike_sa_t *this)
1198 {
1199 if (this->retry_initiate_queued)
1200 {
1201 this->retry_initiate_queued = FALSE;
1202 return initiate(this, NULL, 0, NULL, NULL);
1203 }
1204 return SUCCESS;
1205 }
1206
1207 METHOD(ike_sa_t, process_message, status_t,
1208 private_ike_sa_t *this, message_t *message)
1209 {
1210 status_t status;
1211
1212 if (this->state == IKE_PASSIVE)
1213 { /* do not handle messages in passive state */
1214 return FAILED;
1215 }
1216 switch (message->get_exchange_type(message))
1217 {
1218 case ID_PROT:
1219 case AGGRESSIVE:
1220 case IKE_SA_INIT:
1221 case IKE_AUTH:
1222 if (this->state != IKE_CREATED &&
1223 this->state != IKE_CONNECTING)
1224 {
1225 DBG1(DBG_IKE, "ignoring %N in established IKE_SA state",
1226 exchange_type_names, message->get_exchange_type(message));
1227 return FAILED;
1228 }
1229 break;
1230 default:
1231 break;
1232 }
1233 if (message->get_major_version(message) != this->version)
1234 {
1235 DBG1(DBG_IKE, "ignoring %N IKEv%u exchange on %N SA",
1236 exchange_type_names, message->get_exchange_type(message),
1237 message->get_major_version(message),
1238 ike_version_names, this->version);
1239 /* TODO-IKEv1: fall back to IKEv1 if we receive an IKEv1
1240 * INVALID_MAJOR_VERSION on an IKEv2 SA. */
1241 return FAILED;
1242 }
1243 status = this->task_manager->process_message(this->task_manager, message);
1244 if (this->flush_auth_cfg && this->state == IKE_ESTABLISHED)
1245 {
1246 /* authentication completed */
1247 this->flush_auth_cfg = FALSE;
1248 flush_auth_cfgs(this);
1249 }
1250 return status;
1251 }
1252
1253 METHOD(ike_sa_t, get_id, ike_sa_id_t*,
1254 private_ike_sa_t *this)
1255 {
1256 return this->ike_sa_id;
1257 }
1258
1259 METHOD(ike_sa_t, get_version, ike_version_t,
1260 private_ike_sa_t *this)
1261 {
1262 return this->version;
1263 }
1264
1265 METHOD(ike_sa_t, get_my_id, identification_t*,
1266 private_ike_sa_t *this)
1267 {
1268 return this->my_id;
1269 }
1270
1271 METHOD(ike_sa_t, set_my_id, void,
1272 private_ike_sa_t *this, identification_t *me)
1273 {
1274 DESTROY_IF(this->my_id);
1275 this->my_id = me;
1276 }
1277
1278 METHOD(ike_sa_t, get_other_id, identification_t*,
1279 private_ike_sa_t *this)
1280 {
1281 return this->other_id;
1282 }
1283
1284 METHOD(ike_sa_t, get_other_eap_id, identification_t*,
1285 private_ike_sa_t *this)
1286 {
1287 identification_t *id = NULL, *current;
1288 enumerator_t *enumerator;
1289 auth_cfg_t *cfg;
1290
1291 enumerator = this->other_auths->create_enumerator(this->other_auths);
1292 while (enumerator->enumerate(enumerator, &cfg))
1293 {
1294 /* prefer EAP-Identity of last round */
1295 current = cfg->get(cfg, AUTH_RULE_EAP_IDENTITY);
1296 if (!current || current->get_type(current) == ID_ANY)
1297 {
1298 current = cfg->get(cfg, AUTH_RULE_XAUTH_IDENTITY);
1299 }
1300 if (!current || current->get_type(current) == ID_ANY)
1301 {
1302 current = cfg->get(cfg, AUTH_RULE_IDENTITY);
1303 }
1304 if (current && current->get_type(current) != ID_ANY)
1305 {
1306 id = current;
1307 continue;
1308 }
1309 }
1310 enumerator->destroy(enumerator);
1311 if (id)
1312 {
1313 return id;
1314 }
1315 return this->other_id;
1316 }
1317
1318 METHOD(ike_sa_t, set_other_id, void,
1319 private_ike_sa_t *this, identification_t *other)
1320 {
1321 DESTROY_IF(this->other_id);
1322 this->other_id = other;
1323 }
1324
1325 METHOD(ike_sa_t, add_child_sa, void,
1326 private_ike_sa_t *this, child_sa_t *child_sa)
1327 {
1328 this->child_sas->insert_last(this->child_sas, child_sa);
1329 }
1330
1331 METHOD(ike_sa_t, get_child_sa, child_sa_t*,
1332 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool inbound)
1333 {
1334 enumerator_t *enumerator;
1335 child_sa_t *current, *found = NULL;
1336
1337 enumerator = this->child_sas->create_enumerator(this->child_sas);
1338 while (enumerator->enumerate(enumerator, (void**)&current))
1339 {
1340 if (current->get_spi(current, inbound) == spi &&
1341 current->get_protocol(current) == protocol)
1342 {
1343 found = current;
1344 }
1345 }
1346 enumerator->destroy(enumerator);
1347 return found;
1348 }
1349
1350 METHOD(ike_sa_t, get_child_count, int,
1351 private_ike_sa_t *this)
1352 {
1353 return this->child_sas->get_count(this->child_sas);
1354 }
1355
1356 METHOD(ike_sa_t, create_child_sa_enumerator, enumerator_t*,
1357 private_ike_sa_t *this)
1358 {
1359 return this->child_sas->create_enumerator(this->child_sas);
1360 }
1361
1362 METHOD(ike_sa_t, remove_child_sa, void,
1363 private_ike_sa_t *this, enumerator_t *enumerator)
1364 {
1365 this->child_sas->remove_at(this->child_sas, enumerator);
1366 }
1367
1368 METHOD(ike_sa_t, rekey_child_sa, status_t,
1369 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1370 {
1371 if (this->state == IKE_PASSIVE)
1372 {
1373 return INVALID_STATE;
1374 }
1375 this->task_manager->queue_child_rekey(this->task_manager, protocol, spi);
1376 return this->task_manager->initiate(this->task_manager);
1377 }
1378
1379 METHOD(ike_sa_t, delete_child_sa, status_t,
1380 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool expired)
1381 {
1382 if (this->state == IKE_PASSIVE)
1383 {
1384 return INVALID_STATE;
1385 }
1386 this->task_manager->queue_child_delete(this->task_manager,
1387 protocol, spi, expired);
1388 return this->task_manager->initiate(this->task_manager);
1389 }
1390
1391 METHOD(ike_sa_t, destroy_child_sa, status_t,
1392 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1393 {
1394 enumerator_t *enumerator;
1395 child_sa_t *child_sa;
1396 status_t status = NOT_FOUND;
1397
1398 enumerator = this->child_sas->create_enumerator(this->child_sas);
1399 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1400 {
1401 if (child_sa->get_protocol(child_sa) == protocol &&
1402 child_sa->get_spi(child_sa, TRUE) == spi)
1403 {
1404 this->child_sas->remove_at(this->child_sas, enumerator);
1405 child_sa->destroy(child_sa);
1406 status = SUCCESS;
1407 break;
1408 }
1409 }
1410 enumerator->destroy(enumerator);
1411 return status;
1412 }
1413
1414 METHOD(ike_sa_t, delete_, status_t,
1415 private_ike_sa_t *this)
1416 {
1417 switch (this->state)
1418 {
1419 case IKE_REKEYING:
1420 if (this->version == IKEV1)
1421 { /* SA has been reauthenticated, delete */
1422 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1423 break;
1424 }
1425 /* FALL */
1426 case IKE_ESTABLISHED:
1427 this->task_manager->queue_ike_delete(this->task_manager);
1428 return this->task_manager->initiate(this->task_manager);
1429 case IKE_CREATED:
1430 DBG1(DBG_IKE, "deleting unestablished IKE_SA");
1431 break;
1432 case IKE_PASSIVE:
1433 break;
1434 default:
1435 DBG1(DBG_IKE, "destroying IKE_SA in state %N "
1436 "without notification", ike_sa_state_names, this->state);
1437 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1438 break;
1439 }
1440 return DESTROY_ME;
1441 }
1442
1443 METHOD(ike_sa_t, rekey, status_t,
1444 private_ike_sa_t *this)
1445 {
1446 if (this->state == IKE_PASSIVE)
1447 {
1448 return INVALID_STATE;
1449 }
1450 this->task_manager->queue_ike_rekey(this->task_manager);
1451 return this->task_manager->initiate(this->task_manager);
1452 }
1453
1454 METHOD(ike_sa_t, reauth, status_t,
1455 private_ike_sa_t *this)
1456 {
1457 if (this->state == IKE_PASSIVE)
1458 {
1459 return INVALID_STATE;
1460 }
1461 /* we can't reauthenticate as responder when we use EAP or virtual IPs.
1462 * If the peer does not support RFC4478, there is no way to keep the
1463 * IKE_SA up. */
1464 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1465 {
1466 DBG1(DBG_IKE, "initiator did not reauthenticate as requested");
1467 if (this->other_vips->get_count(this->other_vips) != 0 ||
1468 has_condition(this, COND_XAUTH_AUTHENTICATED) ||
1469 has_condition(this, COND_EAP_AUTHENTICATED)
1470 #ifdef ME
1471 /* as mediation server we too cannot reauth the IKE_SA */
1472 || this->is_mediation_server
1473 #endif /* ME */
1474 )
1475 {
1476 time_t del, now;
1477
1478 del = this->stats[STAT_DELETE];
1479 now = time_monotonic(NULL);
1480 DBG1(DBG_IKE, "IKE_SA %s[%d] will timeout in %V",
1481 get_name(this), this->unique_id, &now, &del);
1482 return FAILED;
1483 }
1484 else
1485 {
1486 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d] actively",
1487 get_name(this), this->unique_id);
1488 }
1489 }
1490 else
1491 {
1492 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d]",
1493 get_name(this), this->unique_id);
1494 }
1495 set_condition(this, COND_REAUTHENTICATING, TRUE);
1496 this->task_manager->queue_ike_reauth(this->task_manager);
1497 return this->task_manager->initiate(this->task_manager);
1498 }
1499
1500 METHOD(ike_sa_t, reestablish, status_t,
1501 private_ike_sa_t *this)
1502 {
1503 ike_sa_t *new;
1504 host_t *host;
1505 action_t action;
1506 enumerator_t *enumerator;
1507 child_sa_t *child_sa;
1508 child_cfg_t *child_cfg;
1509 bool restart = FALSE;
1510 status_t status = FAILED;
1511
1512 if (has_condition(this, COND_REAUTHENTICATING))
1513 { /* only reauthenticate if we have children */
1514 if (this->child_sas->get_count(this->child_sas) == 0
1515 #ifdef ME
1516 /* allow reauth of mediation connections without CHILD_SAs */
1517 && !this->peer_cfg->is_mediation(this->peer_cfg)
1518 #endif /* ME */
1519 )
1520 {
1521 DBG1(DBG_IKE, "unable to reauthenticate IKE_SA, no CHILD_SA "
1522 "to recreate");
1523 }
1524 else
1525 {
1526 restart = TRUE;
1527 }
1528 }
1529 else
1530 { /* check if we have children to keep up at all */
1531 enumerator = this->child_sas->create_enumerator(this->child_sas);
1532 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1533 {
1534 if (this->state == IKE_DELETING)
1535 {
1536 action = child_sa->get_close_action(child_sa);
1537 }
1538 else
1539 {
1540 action = child_sa->get_dpd_action(child_sa);
1541 }
1542 switch (action)
1543 {
1544 case ACTION_RESTART:
1545 restart = TRUE;
1546 break;
1547 case ACTION_ROUTE:
1548 charon->traps->install(charon->traps, this->peer_cfg,
1549 child_sa->get_config(child_sa));
1550 break;
1551 default:
1552 break;
1553 }
1554 }
1555 enumerator->destroy(enumerator);
1556 #ifdef ME
1557 /* mediation connections have no children, keep them up anyway */
1558 if (this->peer_cfg->is_mediation(this->peer_cfg))
1559 {
1560 restart = TRUE;
1561 }
1562 #endif /* ME */
1563 }
1564 if (!restart)
1565 {
1566 return FAILED;
1567 }
1568
1569 /* check if we are able to reestablish this IKE_SA */
1570 if (!has_condition(this, COND_ORIGINAL_INITIATOR) &&
1571 (this->other_vips->get_count(this->other_vips) != 0 ||
1572 has_condition(this, COND_EAP_AUTHENTICATED)
1573 #ifdef ME
1574 || this->is_mediation_server
1575 #endif /* ME */
1576 ))
1577 {
1578 DBG1(DBG_IKE, "unable to reestablish IKE_SA due to asymmetric setup");
1579 return FAILED;
1580 }
1581
1582 new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager,
1583 this->version, TRUE);
1584 if (!new)
1585 {
1586 return FAILED;
1587 }
1588 new->set_peer_cfg(new, this->peer_cfg);
1589 host = this->other_host;
1590 new->set_other_host(new, host->clone(host));
1591 host = this->my_host;
1592 new->set_my_host(new, host->clone(host));
1593 /* if we already have a virtual IP, we reuse it */
1594 enumerator = this->my_vips->create_enumerator(this->my_vips);
1595 while (enumerator->enumerate(enumerator, &host))
1596 {
1597 new->add_virtual_ip(new, TRUE, host);
1598 }
1599 enumerator->destroy(enumerator);
1600
1601 #ifdef ME
1602 if (this->peer_cfg->is_mediation(this->peer_cfg))
1603 {
1604 status = new->initiate(new, NULL, 0, NULL, NULL);
1605 }
1606 else
1607 #endif /* ME */
1608 {
1609 enumerator = this->child_sas->create_enumerator(this->child_sas);
1610 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1611 {
1612 if (has_condition(this, COND_REAUTHENTICATING))
1613 {
1614 switch (child_sa->get_state(child_sa))
1615 {
1616 case CHILD_ROUTED:
1617 { /* move routed child directly */
1618 this->child_sas->remove_at(this->child_sas, enumerator);
1619 new->add_child_sa(new, child_sa);
1620 action = ACTION_NONE;
1621 break;
1622 }
1623 default:
1624 { /* initiate/queue all other CHILD_SAs */
1625 action = ACTION_RESTART;
1626 break;
1627 }
1628 }
1629 }
1630 else
1631 { /* only restart CHILD_SAs that are configured accordingly */
1632 if (this->state == IKE_DELETING)
1633 {
1634 action = child_sa->get_close_action(child_sa);
1635 }
1636 else
1637 {
1638 action = child_sa->get_dpd_action(child_sa);
1639 }
1640 }
1641 switch (action)
1642 {
1643 case ACTION_RESTART:
1644 child_cfg = child_sa->get_config(child_sa);
1645 DBG1(DBG_IKE, "restarting CHILD_SA %s",
1646 child_cfg->get_name(child_cfg));
1647 child_cfg->get_ref(child_cfg);
1648 status = new->initiate(new, child_cfg, 0, NULL, NULL);
1649 break;
1650 default:
1651 continue;
1652 }
1653 if (status == DESTROY_ME)
1654 {
1655 break;
1656 }
1657 }
1658 enumerator->destroy(enumerator);
1659 }
1660
1661 if (status == DESTROY_ME)
1662 {
1663 charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, new);
1664 status = FAILED;
1665 }
1666 else
1667 {
1668 charon->bus->ike_reestablish(charon->bus, &this->public, new);
1669 charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
1670 status = SUCCESS;
1671 }
1672 charon->bus->set_sa(charon->bus, &this->public);
1673 return status;
1674 }
1675
1676 METHOD(ike_sa_t, retransmit, status_t,
1677 private_ike_sa_t *this, u_int32_t message_id)
1678 {
1679 if (this->state == IKE_PASSIVE)
1680 {
1681 return INVALID_STATE;
1682 }
1683 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
1684 if (this->task_manager->retransmit(this->task_manager, message_id) != SUCCESS)
1685 {
1686 /* send a proper signal to brief interested bus listeners */
1687 switch (this->state)
1688 {
1689 case IKE_CONNECTING:
1690 {
1691 /* retry IKE_SA_INIT/Main Mode if we have multiple keyingtries */
1692 u_int32_t tries = this->peer_cfg->get_keyingtries(this->peer_cfg);
1693 charon->bus->alert(charon->bus, ALERT_PEER_INIT_UNREACHABLE,
1694 this->keyingtry);
1695 this->keyingtry++;
1696 if (tries == 0 || tries > this->keyingtry)
1697 {
1698 DBG1(DBG_IKE, "peer not responding, trying again (%d/%d)",
1699 this->keyingtry + 1, tries);
1700 reset(this);
1701 resolve_hosts(this);
1702 this->task_manager->queue_ike(this->task_manager);
1703 return this->task_manager->initiate(this->task_manager);
1704 }
1705 DBG1(DBG_IKE, "establishing IKE_SA failed, peer not responding");
1706 break;
1707 }
1708 case IKE_DELETING:
1709 DBG1(DBG_IKE, "proper IKE_SA delete failed, peer not responding");
1710 if (has_condition(this, COND_REAUTHENTICATING))
1711 {
1712 DBG1(DBG_IKE, "delete during reauthentication failed, "
1713 "trying to reestablish IKE_SA anyway");
1714 reestablish(this);
1715 }
1716 break;
1717 case IKE_REKEYING:
1718 DBG1(DBG_IKE, "rekeying IKE_SA failed, peer not responding");
1719 /* FALL */
1720 default:
1721 reestablish(this);
1722 break;
1723 }
1724 if (this->state != IKE_CONNECTING)
1725 {
1726 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1727 }
1728 return DESTROY_ME;
1729 }
1730 return SUCCESS;
1731 }
1732
1733 METHOD(ike_sa_t, set_auth_lifetime, status_t,
1734 private_ike_sa_t *this, u_int32_t lifetime)
1735 {
1736 u_int32_t diff, hard, soft, now;
1737 bool send_update;
1738
1739 diff = this->peer_cfg->get_over_time(this->peer_cfg);
1740 now = time_monotonic(NULL);
1741 hard = now + lifetime;
1742 soft = hard - diff;
1743
1744 /* check if we have to send an AUTH_LIFETIME to enforce the new lifetime.
1745 * We send the notify in IKE_AUTH if not yet ESTABLISHED. */
1746 send_update = this->state == IKE_ESTABLISHED && this->version == IKEV2 &&
1747 !has_condition(this, COND_ORIGINAL_INITIATOR) &&
1748 (this->other_vips->get_count(this->other_vips) != 0 ||
1749 has_condition(this, COND_EAP_AUTHENTICATED));
1750
1751 if (lifetime < diff)
1752 {
1753 this->stats[STAT_REAUTH] = now;
1754
1755 if (!send_update)
1756 {
1757 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1758 "starting reauthentication", lifetime);
1759 lib->processor->queue_job(lib->processor,
1760 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE));
1761 }
1762 }
1763 else if (this->stats[STAT_REAUTH] == 0 ||
1764 this->stats[STAT_REAUTH] > soft)
1765 {
1766 this->stats[STAT_REAUTH] = soft;
1767 if (!send_update)
1768 {
1769 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, scheduling "
1770 "reauthentication in %ds", lifetime, lifetime - diff);
1771 lib->scheduler->schedule_job(lib->scheduler,
1772 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE),
1773 lifetime - diff);
1774 }
1775 }
1776 else
1777 {
1778 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1779 "reauthentication already scheduled in %ds", lifetime,
1780 this->stats[STAT_REAUTH] - time_monotonic(NULL));
1781 send_update = FALSE;
1782 }
1783 /* give at least some seconds to reauthenticate */
1784 this->stats[STAT_DELETE] = max(hard, now + 10);
1785
1786 #ifdef USE_IKEV2
1787 if (send_update)
1788 {
1789 ike_auth_lifetime_t *task;
1790
1791 task = ike_auth_lifetime_create(&this->public, TRUE);
1792 this->task_manager->queue_task(this->task_manager, &task->task);
1793 return this->task_manager->initiate(this->task_manager);
1794 }
1795 #endif
1796 return SUCCESS;
1797 }
1798
1799 /**
1800 * Check if the current combination of source and destination address is still
1801 * valid.
1802 */
1803 static bool is_current_path_valid(private_ike_sa_t *this)
1804 {
1805 bool valid = FALSE;
1806 host_t *src;
1807 src = hydra->kernel_interface->get_source_addr(hydra->kernel_interface,
1808 this->other_host, this->my_host);
1809 if (src)
1810 {
1811 if (src->ip_equals(src, this->my_host))
1812 {
1813 valid = TRUE;
1814 }
1815 src->destroy(src);
1816 }
1817 return valid;
1818 }
1819
1820 /**
1821 * Check if we have any path avialable for this IKE SA.
1822 */
1823 static bool is_any_path_valid(private_ike_sa_t *this)
1824 {
1825 bool valid = FALSE;
1826 enumerator_t *enumerator;
1827 host_t *src = NULL, *addr;
1828
1829 DBG1(DBG_IKE, "old path is not available anymore, try to find another");
1830 enumerator = create_peer_address_enumerator(this);
1831 while (enumerator->enumerate(enumerator, &addr))
1832 {
1833 DBG1(DBG_IKE, "looking for a route to %H ...", addr);
1834 src = hydra->kernel_interface->get_source_addr(
1835 hydra->kernel_interface, addr, NULL);
1836 if (src)
1837 {
1838 break;
1839 }
1840 }
1841 enumerator->destroy(enumerator);
1842 if (src)
1843 {
1844 valid = TRUE;
1845 src->destroy(src);
1846 }
1847 return valid;
1848 }
1849
1850 METHOD(ike_sa_t, roam, status_t,
1851 private_ike_sa_t *this, bool address)
1852 {
1853 switch (this->state)
1854 {
1855 case IKE_CREATED:
1856 case IKE_DELETING:
1857 case IKE_DESTROYING:
1858 case IKE_PASSIVE:
1859 return SUCCESS;
1860 default:
1861 break;
1862 }
1863
1864 /* keep existing path if possible */
1865 if (is_current_path_valid(this))
1866 {
1867 DBG2(DBG_IKE, "keeping connection path %H - %H",
1868 this->my_host, this->other_host);
1869 set_condition(this, COND_STALE, FALSE);
1870
1871 if (supports_extension(this, EXT_MOBIKE) && address)
1872 { /* if any addresses changed, send an updated list */
1873 DBG1(DBG_IKE, "sending address list update using MOBIKE");
1874 this->task_manager->queue_mobike(this->task_manager, FALSE, TRUE);
1875 return this->task_manager->initiate(this->task_manager);
1876 }
1877 return SUCCESS;
1878 }
1879
1880 if (!is_any_path_valid(this))
1881 {
1882 DBG1(DBG_IKE, "no route found to reach %H, MOBIKE update deferred",
1883 this->other_host);
1884 set_condition(this, COND_STALE, TRUE);
1885 return SUCCESS;
1886 }
1887 set_condition(this, COND_STALE, FALSE);
1888
1889 /* update addresses with mobike, if supported ... */
1890 if (supports_extension(this, EXT_MOBIKE))
1891 {
1892 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1893 { /* responder updates the peer about changed address config */
1894 DBG1(DBG_IKE, "sending address list update using MOBIKE, "
1895 "implicitly requesting an address change");
1896 address = TRUE;
1897 }
1898 else
1899 {
1900 DBG1(DBG_IKE, "requesting address change using MOBIKE");
1901 }
1902 this->task_manager->queue_mobike(this->task_manager, TRUE, address);
1903 return this->task_manager->initiate(this->task_manager);
1904 }
1905
1906 /* ... reauth if not */
1907 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1908 { /* responder does not reauthenticate */
1909 set_condition(this, COND_STALE, TRUE);
1910 return SUCCESS;
1911 }
1912 DBG1(DBG_IKE, "reauthenticating IKE_SA due to address change");
1913 /* since our previous path is not valid anymore, try and find a new one */
1914 resolve_hosts(this);
1915 return reauth(this);
1916 }
1917
1918 METHOD(ike_sa_t, add_configuration_attribute, void,
1919 private_ike_sa_t *this, attribute_handler_t *handler,
1920 configuration_attribute_type_t type, chunk_t data)
1921 {
1922 attribute_entry_t *entry = malloc_thing(attribute_entry_t);
1923
1924 entry->handler = handler;
1925 entry->type = type;
1926 entry->data = chunk_clone(data);
1927
1928 this->attributes->insert_last(this->attributes, entry);
1929 }
1930
1931 METHOD(ike_sa_t, create_task_enumerator, enumerator_t*,
1932 private_ike_sa_t *this, task_queue_t queue)
1933 {
1934 return this->task_manager->create_task_enumerator(this->task_manager, queue);
1935 }
1936
1937 METHOD(ike_sa_t, flush_queue, void,
1938 private_ike_sa_t *this, task_queue_t queue)
1939 {
1940 this->task_manager->flush_queue(this->task_manager, queue);
1941 }
1942
1943 METHOD(ike_sa_t, queue_task, void,
1944 private_ike_sa_t *this, task_t *task)
1945 {
1946 this->task_manager->queue_task(this->task_manager, task);
1947 }
1948
1949 METHOD(ike_sa_t, inherit, void,
1950 private_ike_sa_t *this, ike_sa_t *other_public)
1951 {
1952 private_ike_sa_t *other = (private_ike_sa_t*)other_public;
1953 child_sa_t *child_sa;
1954 attribute_entry_t *entry;
1955 enumerator_t *enumerator;
1956 auth_cfg_t *cfg;
1957 host_t *vip;
1958
1959 /* apply hosts and ids */
1960 this->my_host->destroy(this->my_host);
1961 this->other_host->destroy(this->other_host);
1962 this->my_id->destroy(this->my_id);
1963 this->other_id->destroy(this->other_id);
1964 this->my_host = other->my_host->clone(other->my_host);
1965 this->other_host = other->other_host->clone(other->other_host);
1966 this->my_id = other->my_id->clone(other->my_id);
1967 this->other_id = other->other_id->clone(other->other_id);
1968
1969 /* apply assigned virtual IPs... */
1970 while (this->my_vips->remove_last(this->my_vips, (void**)&vip) == SUCCESS)
1971 {
1972 other->my_vips->insert_first(other->my_vips, vip);
1973 }
1974 while (this->other_vips->remove_last(this->other_vips,
1975 (void**)&vip) == SUCCESS)
1976 {
1977 other->other_vips->insert_first(other->other_vips, vip);
1978 }
1979
1980 /* authentication information */
1981 enumerator = other->my_auths->create_enumerator(other->my_auths);
1982 while (enumerator->enumerate(enumerator, &cfg))
1983 {
1984 this->my_auths->insert_last(this->my_auths, cfg->clone(cfg));
1985 }
1986 enumerator->destroy(enumerator);
1987 enumerator = other->other_auths->create_enumerator(other->other_auths);
1988 while (enumerator->enumerate(enumerator, &cfg))
1989 {
1990 this->other_auths->insert_last(this->other_auths, cfg->clone(cfg));
1991 }
1992 enumerator->destroy(enumerator);
1993
1994 /* ... and configuration attributes */
1995 while (other->attributes->remove_last(other->attributes,
1996 (void**)&entry) == SUCCESS)
1997 {
1998 this->attributes->insert_first(this->attributes, entry);
1999 }
2000
2001 /* inherit all conditions */
2002 this->conditions = other->conditions;
2003 if (this->conditions & COND_NAT_HERE)
2004 {
2005 send_keepalive(this);
2006 }
2007
2008 #ifdef ME
2009 if (other->is_mediation_server)
2010 {
2011 act_as_mediation_server(this);
2012 }
2013 else if (other->server_reflexive_host)
2014 {
2015 this->server_reflexive_host = other->server_reflexive_host->clone(
2016 other->server_reflexive_host);
2017 }
2018 #endif /* ME */
2019
2020 /* adopt all children */
2021 while (other->child_sas->remove_last(other->child_sas,
2022 (void**)&child_sa) == SUCCESS)
2023 {
2024 this->child_sas->insert_first(this->child_sas, (void*)child_sa);
2025 }
2026
2027 /* move pending tasks to the new IKE_SA */
2028 this->task_manager->adopt_tasks(this->task_manager, other->task_manager);
2029
2030 /* reauthentication timeout survives a rekeying */
2031 if (other->stats[STAT_REAUTH])
2032 {
2033 time_t reauth, delete, now = time_monotonic(NULL);
2034
2035 this->stats[STAT_REAUTH] = other->stats[STAT_REAUTH];
2036 reauth = this->stats[STAT_REAUTH] - now;
2037 delete = reauth + this->peer_cfg->get_over_time(this->peer_cfg);
2038 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH] + delete;
2039 DBG1(DBG_IKE, "rescheduling reauthentication in %ds after rekeying, "
2040 "lifetime reduced to %ds", reauth, delete);
2041 lib->scheduler->schedule_job(lib->scheduler,
2042 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE), reauth);
2043 lib->scheduler->schedule_job(lib->scheduler,
2044 (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE), delete);
2045 }
2046 }
2047
2048 METHOD(ike_sa_t, destroy, void,
2049 private_ike_sa_t *this)
2050 {
2051 attribute_entry_t *entry;
2052 host_t *vip;
2053
2054 charon->bus->set_sa(charon->bus, &this->public);
2055
2056 set_state(this, IKE_DESTROYING);
2057 DESTROY_IF(this->task_manager);
2058
2059 /* remove attributes first, as we pass the IKE_SA to the handler */
2060 while (this->attributes->remove_last(this->attributes,
2061 (void**)&entry) == SUCCESS)
2062 {
2063 hydra->attributes->release(hydra->attributes, entry->handler,
2064 this->other_id, entry->type, entry->data);
2065 free(entry->data.ptr);
2066 free(entry);
2067 }
2068 this->attributes->destroy(this->attributes);
2069
2070 this->child_sas->destroy_offset(this->child_sas, offsetof(child_sa_t, destroy));
2071
2072 /* unset SA after here to avoid usage by the listeners */
2073 charon->bus->set_sa(charon->bus, NULL);
2074
2075 DESTROY_IF(this->keymat);
2076
2077 while (this->my_vips->remove_last(this->my_vips, (void**)&vip) == SUCCESS)
2078 {
2079 hydra->kernel_interface->del_ip(hydra->kernel_interface, vip, -1);
2080 vip->destroy(vip);
2081 }
2082 this->my_vips->destroy(this->my_vips);
2083 while (this->other_vips->remove_last(this->other_vips,
2084 (void**)&vip) == SUCCESS)
2085 {
2086 if (this->peer_cfg)
2087 {
2088 linked_list_t *pools;
2089 identification_t *id;
2090
2091 id = get_other_eap_id(this);
2092 pools = linked_list_create_from_enumerator(
2093 this->peer_cfg->create_pool_enumerator(this->peer_cfg));
2094 hydra->attributes->release_address(hydra->attributes, pools, vip, id);
2095 pools->destroy(pools);
2096 }
2097 vip->destroy(vip);
2098 }
2099 this->other_vips->destroy(this->other_vips);
2100 this->peer_addresses->destroy_offset(this->peer_addresses,
2101 offsetof(host_t, destroy));
2102 #ifdef ME
2103 if (this->is_mediation_server)
2104 {
2105 charon->mediation_manager->remove(charon->mediation_manager,
2106 this->ike_sa_id);
2107 }
2108 DESTROY_IF(this->server_reflexive_host);
2109 chunk_free(&this->connect_id);
2110 #endif /* ME */
2111 free(this->nat_detection_dest.ptr);
2112
2113 DESTROY_IF(this->my_host);
2114 DESTROY_IF(this->other_host);
2115 DESTROY_IF(this->my_id);
2116 DESTROY_IF(this->other_id);
2117 DESTROY_IF(this->local_host);
2118 DESTROY_IF(this->remote_host);
2119
2120 DESTROY_IF(this->ike_cfg);
2121 DESTROY_IF(this->peer_cfg);
2122 DESTROY_IF(this->proposal);
2123 this->my_auth->destroy(this->my_auth);
2124 this->other_auth->destroy(this->other_auth);
2125 this->my_auths->destroy_offset(this->my_auths,
2126 offsetof(auth_cfg_t, destroy));
2127 this->other_auths->destroy_offset(this->other_auths,
2128 offsetof(auth_cfg_t, destroy));
2129
2130 this->ike_sa_id->destroy(this->ike_sa_id);
2131 free(this);
2132 }
2133
2134 /*
2135 * Described in header.
2136 */
2137 ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id, bool initiator,
2138 ike_version_t version)
2139 {
2140 private_ike_sa_t *this;
2141 static u_int32_t unique_id = 0;
2142
2143 if (version == IKE_ANY)
2144 { /* prefer IKEv2 if protocol not specified */
2145 #ifdef USE_IKEV2
2146 version = IKEV2;
2147 #else
2148 version = IKEV1;
2149 #endif
2150 }
2151
2152 INIT(this,
2153 .public = {
2154 .get_version = _get_version,
2155 .get_state = _get_state,
2156 .set_state = _set_state,
2157 .get_name = _get_name,
2158 .get_statistic = _get_statistic,
2159 .set_statistic = _set_statistic,
2160 .process_message = _process_message,
2161 .initiate = _initiate,
2162 .retry_initiate = _retry_initiate,
2163 .get_ike_cfg = _get_ike_cfg,
2164 .set_ike_cfg = _set_ike_cfg,
2165 .get_peer_cfg = _get_peer_cfg,
2166 .set_peer_cfg = _set_peer_cfg,
2167 .get_auth_cfg = _get_auth_cfg,
2168 .create_auth_cfg_enumerator = _create_auth_cfg_enumerator,
2169 .add_auth_cfg = _add_auth_cfg,
2170 .get_proposal = _get_proposal,
2171 .set_proposal = _set_proposal,
2172 .get_id = _get_id,
2173 .get_my_host = _get_my_host,
2174 .set_my_host = _set_my_host,
2175 .get_other_host = _get_other_host,
2176 .set_other_host = _set_other_host,
2177 .set_message_id = _set_message_id,
2178 .float_ports = _float_ports,
2179 .update_hosts = _update_hosts,
2180 .get_my_id = _get_my_id,
2181 .set_my_id = _set_my_id,
2182 .get_other_id = _get_other_id,
2183 .set_other_id = _set_other_id,
2184 .get_other_eap_id = _get_other_eap_id,
2185 .enable_extension = _enable_extension,
2186 .supports_extension = _supports_extension,
2187 .set_condition = _set_condition,
2188 .has_condition = _has_condition,
2189 .set_pending_updates = _set_pending_updates,
2190 .get_pending_updates = _get_pending_updates,
2191 .create_peer_address_enumerator = _create_peer_address_enumerator,
2192 .add_peer_address = _add_peer_address,
2193 .clear_peer_addresses = _clear_peer_addresses,
2194 .has_mapping_changed = _has_mapping_changed,
2195 .retransmit = _retransmit,
2196 .delete = _delete_,
2197 .destroy = _destroy,
2198 .send_dpd = _send_dpd,
2199 .send_keepalive = _send_keepalive,
2200 .get_keymat = _get_keymat,
2201 .add_child_sa = _add_child_sa,
2202 .get_child_sa = _get_child_sa,
2203 .get_child_count = _get_child_count,
2204 .create_child_sa_enumerator = _create_child_sa_enumerator,
2205 .remove_child_sa = _remove_child_sa,
2206 .rekey_child_sa = _rekey_child_sa,
2207 .delete_child_sa = _delete_child_sa,
2208 .destroy_child_sa = _destroy_child_sa,
2209 .rekey = _rekey,
2210 .reauth = _reauth,
2211 .reestablish = _reestablish,
2212 .set_auth_lifetime = _set_auth_lifetime,
2213 .roam = _roam,
2214 .inherit = _inherit,
2215 .generate_message = _generate_message,
2216 .reset = _reset,
2217 .get_unique_id = _get_unique_id,
2218 .add_virtual_ip = _add_virtual_ip,
2219 .clear_virtual_ips = _clear_virtual_ips,
2220 .create_virtual_ip_enumerator = _create_virtual_ip_enumerator,
2221 .add_configuration_attribute = _add_configuration_attribute,
2222 .set_kmaddress = _set_kmaddress,
2223 .create_task_enumerator = _create_task_enumerator,
2224 .flush_queue = _flush_queue,
2225 .queue_task = _queue_task,
2226 #ifdef ME
2227 .act_as_mediation_server = _act_as_mediation_server,
2228 .get_server_reflexive_host = _get_server_reflexive_host,
2229 .set_server_reflexive_host = _set_server_reflexive_host,
2230 .get_connect_id = _get_connect_id,
2231 .initiate_mediation = _initiate_mediation,
2232 .initiate_mediated = _initiate_mediated,
2233 .relay = _relay,
2234 .callback = _callback,
2235 .respond = _respond,
2236 #endif /* ME */
2237 },
2238 .ike_sa_id = ike_sa_id->clone(ike_sa_id),
2239 .version = version,
2240 .child_sas = linked_list_create(),
2241 .my_host = host_create_any(AF_INET),
2242 .other_host = host_create_any(AF_INET),
2243 .my_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2244 .other_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2245 .keymat = keymat_create(version, initiator),
2246 .state = IKE_CREATED,
2247 .stats[STAT_INBOUND] = time_monotonic(NULL),
2248 .stats[STAT_OUTBOUND] = time_monotonic(NULL),
2249 .my_auth = auth_cfg_create(),
2250 .other_auth = auth_cfg_create(),
2251 .my_auths = linked_list_create(),
2252 .other_auths = linked_list_create(),
2253 .unique_id = ++unique_id,
2254 .peer_addresses = linked_list_create(),
2255 .my_vips = linked_list_create(),
2256 .other_vips = linked_list_create(),
2257 .attributes = linked_list_create(),
2258 .keepalive_interval = lib->settings->get_time(lib->settings,
2259 "%s.keep_alive", KEEPALIVE_INTERVAL, charon->name),
2260 .retry_initiate_interval = lib->settings->get_time(lib->settings,
2261 "%s.retry_initiate_interval", 0, charon->name),
2262 .flush_auth_cfg = lib->settings->get_bool(lib->settings,
2263 "%s.flush_auth_cfg", FALSE, charon->name),
2264 );
2265
2266 if (version == IKEV2)
2267 { /* always supported with IKEv2 */
2268 enable_extension(this, EXT_DPD);
2269 }
2270
2271 this->task_manager = task_manager_create(&this->public);
2272 this->my_host->set_port(this->my_host,
2273 charon->socket->get_port(charon->socket, FALSE));
2274
2275 if (!this->task_manager || !this->keymat)
2276 {
2277 DBG1(DBG_IKE, "IKE version %d not supported", this->version);
2278 destroy(this);
2279 return NULL;
2280 }
2281 return &this->public;
2282 }