e795d01bfc85d4fe25717e25b461338e4a760a00
[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 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
579 if (this->state == IKE_PASSIVE)
580 {
581 return INVALID_STATE;
582 }
583 delay = this->peer_cfg->get_dpd(this->peer_cfg);
584 if (this->task_manager->busy(this->task_manager))
585 {
586 /* an exchange is in the air, no need to start a DPD check */
587 diff = 0;
588 }
589 else
590 {
591 /* check if there was any inbound traffic */
592 time_t last_in, now;
593 last_in = get_use_time(this, TRUE);
594 now = time_monotonic(NULL);
595 diff = now - last_in;
596 if (!delay || diff >= delay)
597 {
598 /* to long ago, initiate dead peer detection */
599 DBG1(DBG_IKE, "sending DPD request");
600 this->task_manager->queue_dpd(this->task_manager);
601 diff = 0;
602 }
603 }
604 /* recheck in "interval" seconds */
605 if (delay)
606 {
607 job = (job_t*)send_dpd_job_create(this->ike_sa_id);
608 lib->scheduler->schedule_job(lib->scheduler, job, delay - diff);
609 }
610 return this->task_manager->initiate(this->task_manager);
611 }
612
613 METHOD(ike_sa_t, get_state, ike_sa_state_t,
614 private_ike_sa_t *this)
615 {
616 return this->state;
617 }
618
619 METHOD(ike_sa_t, set_state, void,
620 private_ike_sa_t *this, ike_sa_state_t state)
621 {
622 bool trigger_dpd = FALSE;
623
624 DBG2(DBG_IKE, "IKE_SA %s[%d] state change: %N => %N",
625 get_name(this), this->unique_id,
626 ike_sa_state_names, this->state,
627 ike_sa_state_names, state);
628
629 switch (state)
630 {
631 case IKE_ESTABLISHED:
632 {
633 if (this->state == IKE_CONNECTING ||
634 this->state == IKE_PASSIVE)
635 {
636 job_t *job;
637 u_int32_t t;
638
639 /* calculate rekey, reauth and lifetime */
640 this->stats[STAT_ESTABLISHED] = time_monotonic(NULL);
641
642 /* schedule rekeying if we have a time which is smaller than
643 * an already scheduled rekeying */
644 t = this->peer_cfg->get_rekey_time(this->peer_cfg, TRUE);
645 if (t && (this->stats[STAT_REKEY] == 0 ||
646 (this->stats[STAT_REKEY] > t + this->stats[STAT_ESTABLISHED])))
647 {
648 this->stats[STAT_REKEY] = t + this->stats[STAT_ESTABLISHED];
649 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, FALSE);
650 lib->scheduler->schedule_job(lib->scheduler, job, t);
651 DBG1(DBG_IKE, "scheduling rekeying in %ds", t);
652 }
653 t = this->peer_cfg->get_reauth_time(this->peer_cfg, TRUE);
654 if (t && (this->stats[STAT_REAUTH] == 0 ||
655 (this->stats[STAT_REAUTH] > t + this->stats[STAT_ESTABLISHED])))
656 {
657 this->stats[STAT_REAUTH] = t + this->stats[STAT_ESTABLISHED];
658 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE);
659 lib->scheduler->schedule_job(lib->scheduler, job, t);
660 DBG1(DBG_IKE, "scheduling reauthentication in %ds", t);
661 }
662 t = this->peer_cfg->get_over_time(this->peer_cfg);
663 if (this->stats[STAT_REKEY] || this->stats[STAT_REAUTH])
664 {
665 if (this->stats[STAT_REAUTH] == 0)
666 {
667 this->stats[STAT_DELETE] = this->stats[STAT_REKEY];
668 }
669 else if (this->stats[STAT_REKEY] == 0)
670 {
671 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH];
672 }
673 else
674 {
675 this->stats[STAT_DELETE] = min(this->stats[STAT_REKEY],
676 this->stats[STAT_REAUTH]);
677 }
678 this->stats[STAT_DELETE] += t;
679 t = this->stats[STAT_DELETE] - this->stats[STAT_ESTABLISHED];
680 job = (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE);
681 lib->scheduler->schedule_job(lib->scheduler, job, t);
682 DBG1(DBG_IKE, "maximum IKE_SA lifetime %ds", t);
683 }
684 trigger_dpd = this->peer_cfg->get_dpd(this->peer_cfg);
685 }
686 break;
687 }
688 default:
689 break;
690 }
691 charon->bus->ike_state_change(charon->bus, &this->public, state);
692 this->state = state;
693
694 if (trigger_dpd)
695 {
696 if (supports_extension(this, EXT_DPD))
697 {
698 send_dpd(this);
699 }
700 else
701 {
702 DBG1(DBG_IKE, "DPD not supported by peer, disabled");
703 }
704 }
705 }
706
707 METHOD(ike_sa_t, reset, void,
708 private_ike_sa_t *this)
709 {
710 /* the responder ID is reset, as peer may choose another one */
711 if (this->ike_sa_id->is_initiator(this->ike_sa_id))
712 {
713 this->ike_sa_id->set_responder_spi(this->ike_sa_id, 0);
714 }
715
716 set_state(this, IKE_CREATED);
717
718 flush_auth_cfgs(this);
719
720 this->keymat->destroy(this->keymat);
721 this->keymat = keymat_create(this->version,
722 this->ike_sa_id->is_initiator(this->ike_sa_id));
723
724 this->task_manager->reset(this->task_manager, 0, 0);
725 }
726
727 METHOD(ike_sa_t, get_keymat, keymat_t*,
728 private_ike_sa_t *this)
729 {
730 return this->keymat;
731 }
732
733 METHOD(ike_sa_t, add_virtual_ip, void,
734 private_ike_sa_t *this, bool local, host_t *ip)
735 {
736 if (local)
737 {
738 DBG1(DBG_IKE, "installing new virtual IP %H", ip);
739 if (hydra->kernel_interface->add_ip(hydra->kernel_interface, ip,
740 this->my_host) == SUCCESS)
741 {
742 this->my_vips->insert_last(this->my_vips, ip->clone(ip));
743 }
744 else
745 {
746 DBG1(DBG_IKE, "installing virtual IP %H failed", ip);
747 }
748 }
749 else
750 {
751 this->other_vips->insert_last(this->other_vips, ip->clone(ip));
752 }
753 }
754
755
756 METHOD(ike_sa_t, clear_virtual_ips, void,
757 private_ike_sa_t *this, bool local)
758 {
759 linked_list_t *vips = local ? this->my_vips : this->other_vips;
760 host_t *vip;
761
762 while (vips->remove_first(vips, (void**)&vip) == SUCCESS)
763 {
764 if (local)
765 {
766 hydra->kernel_interface->del_ip(hydra->kernel_interface, vip);
767 }
768 vip->destroy(vip);
769 }
770 }
771
772 METHOD(ike_sa_t, create_virtual_ip_enumerator, enumerator_t*,
773 private_ike_sa_t *this, bool local)
774 {
775 if (local)
776 {
777 return this->my_vips->create_enumerator(this->my_vips);
778 }
779 return this->other_vips->create_enumerator(this->other_vips);
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_vips,
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_vips->get_count(this->other_vips) != 0 ||
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 set_condition(this, COND_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 (has_condition(this, COND_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_vips->get_count(this->other_vips) != 0 ||
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 enumerator = this->my_vips->create_enumerator(this->my_vips);
1589 while (enumerator->enumerate(enumerator, &host))
1590 {
1591 new->add_virtual_ip(new, TRUE, host);
1592 }
1593 enumerator->destroy(enumerator);
1594
1595 #ifdef ME
1596 if (this->peer_cfg->is_mediation(this->peer_cfg))
1597 {
1598 status = new->initiate(new, NULL, 0, NULL, NULL);
1599 }
1600 else
1601 #endif /* ME */
1602 {
1603 enumerator = this->child_sas->create_enumerator(this->child_sas);
1604 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1605 {
1606 if (has_condition(this, COND_REAUTHENTICATING))
1607 {
1608 switch (child_sa->get_state(child_sa))
1609 {
1610 case CHILD_ROUTED:
1611 { /* move routed child directly */
1612 this->child_sas->remove_at(this->child_sas, enumerator);
1613 new->add_child_sa(new, child_sa);
1614 action = ACTION_NONE;
1615 break;
1616 }
1617 default:
1618 { /* initiate/queue all other CHILD_SAs */
1619 action = ACTION_RESTART;
1620 break;
1621 }
1622 }
1623 }
1624 else
1625 { /* only restart CHILD_SAs that are configured accordingly */
1626 if (this->state == IKE_DELETING)
1627 {
1628 action = child_sa->get_close_action(child_sa);
1629 }
1630 else
1631 {
1632 action = child_sa->get_dpd_action(child_sa);
1633 }
1634 }
1635 switch (action)
1636 {
1637 case ACTION_RESTART:
1638 child_cfg = child_sa->get_config(child_sa);
1639 DBG1(DBG_IKE, "restarting CHILD_SA %s",
1640 child_cfg->get_name(child_cfg));
1641 child_cfg->get_ref(child_cfg);
1642 status = new->initiate(new, child_cfg, 0, NULL, NULL);
1643 break;
1644 default:
1645 continue;
1646 }
1647 if (status == DESTROY_ME)
1648 {
1649 break;
1650 }
1651 }
1652 enumerator->destroy(enumerator);
1653 }
1654
1655 if (status == DESTROY_ME)
1656 {
1657 charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, new);
1658 status = FAILED;
1659 }
1660 else
1661 {
1662 charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
1663 status = SUCCESS;
1664 }
1665 charon->bus->set_sa(charon->bus, &this->public);
1666 return status;
1667 }
1668
1669 METHOD(ike_sa_t, retransmit, status_t,
1670 private_ike_sa_t *this, u_int32_t message_id)
1671 {
1672 if (this->state == IKE_PASSIVE)
1673 {
1674 return INVALID_STATE;
1675 }
1676 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
1677 if (this->task_manager->retransmit(this->task_manager, message_id) != SUCCESS)
1678 {
1679 /* send a proper signal to brief interested bus listeners */
1680 switch (this->state)
1681 {
1682 case IKE_CONNECTING:
1683 {
1684 /* retry IKE_SA_INIT/Main Mode if we have multiple keyingtries */
1685 u_int32_t tries = this->peer_cfg->get_keyingtries(this->peer_cfg);
1686 this->keyingtry++;
1687 if (tries == 0 || tries > this->keyingtry)
1688 {
1689 DBG1(DBG_IKE, "peer not responding, trying again (%d/%d)",
1690 this->keyingtry + 1, tries);
1691 reset(this);
1692 resolve_hosts(this);
1693 this->task_manager->queue_ike(this->task_manager);
1694 return this->task_manager->initiate(this->task_manager);
1695 }
1696 DBG1(DBG_IKE, "establishing IKE_SA failed, peer not responding");
1697 break;
1698 }
1699 case IKE_DELETING:
1700 DBG1(DBG_IKE, "proper IKE_SA delete failed, peer not responding");
1701 if (has_condition(this, COND_REAUTHENTICATING))
1702 {
1703 DBG1(DBG_IKE, "delete during reauthentication failed, "
1704 "trying to reestablish IKE_SA anyway");
1705 reestablish(this);
1706 }
1707 break;
1708 case IKE_REKEYING:
1709 DBG1(DBG_IKE, "rekeying IKE_SA failed, peer not responding");
1710 /* FALL */
1711 default:
1712 reestablish(this);
1713 break;
1714 }
1715 return DESTROY_ME;
1716 }
1717 return SUCCESS;
1718 }
1719
1720 METHOD(ike_sa_t, set_auth_lifetime, status_t,
1721 private_ike_sa_t *this, u_int32_t lifetime)
1722 {
1723 u_int32_t diff, hard, soft, now;
1724 ike_auth_lifetime_t *task;
1725 bool send_update;
1726
1727 diff = this->peer_cfg->get_over_time(this->peer_cfg);
1728 now = time_monotonic(NULL);
1729 hard = now + lifetime;
1730 soft = hard - diff;
1731
1732 /* check if we have to send an AUTH_LIFETIME to enforce the new lifetime.
1733 * We send the notify in IKE_AUTH if not yet ESTABLISHED. */
1734 send_update = this->state == IKE_ESTABLISHED && this->version == IKEV2 &&
1735 !has_condition(this, COND_ORIGINAL_INITIATOR) &&
1736 (this->other_vips->get_count(this->other_vips) != 0 ||
1737 has_condition(this, COND_EAP_AUTHENTICATED));
1738
1739 if (lifetime < diff)
1740 {
1741 this->stats[STAT_REAUTH] = now;
1742
1743 if (!send_update)
1744 {
1745 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1746 "starting reauthentication", lifetime);
1747 lib->processor->queue_job(lib->processor,
1748 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE));
1749 }
1750 }
1751 else if (this->stats[STAT_REAUTH] == 0 ||
1752 this->stats[STAT_REAUTH] > soft)
1753 {
1754 this->stats[STAT_REAUTH] = soft;
1755 if (!send_update)
1756 {
1757 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, scheduling "
1758 "reauthentication in %ds", lifetime, lifetime - diff);
1759 lib->scheduler->schedule_job(lib->scheduler,
1760 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE),
1761 lifetime - diff);
1762 }
1763 }
1764 else
1765 {
1766 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1767 "reauthentication already scheduled in %ds", lifetime,
1768 this->stats[STAT_REAUTH] - time_monotonic(NULL));
1769 send_update = FALSE;
1770 }
1771 /* give at least some seconds to reauthenticate */
1772 this->stats[STAT_DELETE] = max(hard, now + 10);
1773
1774 if (send_update)
1775 {
1776 task = ike_auth_lifetime_create(&this->public, TRUE);
1777 this->task_manager->queue_task(this->task_manager, &task->task);
1778 return this->task_manager->initiate(this->task_manager);
1779 }
1780 return SUCCESS;
1781 }
1782
1783 /**
1784 * Check if the current combination of source and destination address is still
1785 * valid.
1786 */
1787 static bool is_current_path_valid(private_ike_sa_t *this)
1788 {
1789 bool valid = FALSE;
1790 host_t *src;
1791 src = hydra->kernel_interface->get_source_addr(hydra->kernel_interface,
1792 this->other_host, this->my_host);
1793 if (src)
1794 {
1795 if (src->ip_equals(src, this->my_host))
1796 {
1797 valid = TRUE;
1798 }
1799 src->destroy(src);
1800 }
1801 return valid;
1802 }
1803
1804 /**
1805 * Check if we have any path avialable for this IKE SA.
1806 */
1807 static bool is_any_path_valid(private_ike_sa_t *this)
1808 {
1809 bool valid = FALSE;
1810 enumerator_t *enumerator;
1811 host_t *src = NULL, *addr;
1812
1813 DBG1(DBG_IKE, "old path is not available anymore, try to find another");
1814 enumerator = create_peer_address_enumerator(this);
1815 while (enumerator->enumerate(enumerator, &addr))
1816 {
1817 DBG1(DBG_IKE, "looking for a route to %H ...", addr);
1818 src = hydra->kernel_interface->get_source_addr(
1819 hydra->kernel_interface, addr, NULL);
1820 if (src)
1821 {
1822 break;
1823 }
1824 }
1825 enumerator->destroy(enumerator);
1826 if (src)
1827 {
1828 valid = TRUE;
1829 src->destroy(src);
1830 }
1831 return valid;
1832 }
1833
1834 METHOD(ike_sa_t, roam, status_t,
1835 private_ike_sa_t *this, bool address)
1836 {
1837 switch (this->state)
1838 {
1839 case IKE_CREATED:
1840 case IKE_DELETING:
1841 case IKE_DESTROYING:
1842 case IKE_PASSIVE:
1843 return SUCCESS;
1844 default:
1845 break;
1846 }
1847
1848 /* keep existing path if possible */
1849 if (is_current_path_valid(this))
1850 {
1851 DBG2(DBG_IKE, "keeping connection path %H - %H",
1852 this->my_host, this->other_host);
1853 set_condition(this, COND_STALE, FALSE);
1854
1855 if (supports_extension(this, EXT_MOBIKE) && address)
1856 { /* if any addresses changed, send an updated list */
1857 DBG1(DBG_IKE, "sending address list update using MOBIKE");
1858 this->task_manager->queue_mobike(this->task_manager, FALSE, TRUE);
1859 return this->task_manager->initiate(this->task_manager);
1860 }
1861 return SUCCESS;
1862 }
1863
1864 if (!is_any_path_valid(this))
1865 {
1866 DBG1(DBG_IKE, "no route found to reach %H, MOBIKE update deferred",
1867 this->other_host);
1868 set_condition(this, COND_STALE, TRUE);
1869 return SUCCESS;
1870 }
1871 set_condition(this, COND_STALE, FALSE);
1872
1873 /* update addresses with mobike, if supported ... */
1874 if (supports_extension(this, EXT_MOBIKE))
1875 {
1876 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1877 { /* responder updates the peer about changed address config */
1878 DBG1(DBG_IKE, "sending address list update using MOBIKE, "
1879 "implicitly requesting an address change");
1880 address = TRUE;
1881 }
1882 else
1883 {
1884 DBG1(DBG_IKE, "requesting address change using MOBIKE");
1885 }
1886 this->task_manager->queue_mobike(this->task_manager, TRUE, address);
1887 return this->task_manager->initiate(this->task_manager);
1888 }
1889
1890 /* ... reauth if not */
1891 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1892 { /* responder does not reauthenticate */
1893 set_condition(this, COND_STALE, TRUE);
1894 return SUCCESS;
1895 }
1896 DBG1(DBG_IKE, "reauthenticating IKE_SA due to address change");
1897 /* since our previous path is not valid anymore, try and find a new one */
1898 resolve_hosts(this);
1899 return reauth(this);
1900 }
1901
1902 METHOD(ike_sa_t, add_configuration_attribute, void,
1903 private_ike_sa_t *this, attribute_handler_t *handler,
1904 configuration_attribute_type_t type, chunk_t data)
1905 {
1906 attribute_entry_t *entry = malloc_thing(attribute_entry_t);
1907
1908 entry->handler = handler;
1909 entry->type = type;
1910 entry->data = chunk_clone(data);
1911
1912 this->attributes->insert_last(this->attributes, entry);
1913 }
1914
1915 METHOD(ike_sa_t, create_task_enumerator, enumerator_t*,
1916 private_ike_sa_t *this, task_queue_t queue)
1917 {
1918 return this->task_manager->create_task_enumerator(this->task_manager, queue);
1919 }
1920
1921 METHOD(ike_sa_t, flush_queue, void,
1922 private_ike_sa_t *this, task_queue_t queue)
1923 {
1924 this->task_manager->flush_queue(this->task_manager, queue);
1925 }
1926
1927 METHOD(ike_sa_t, queue_task, void,
1928 private_ike_sa_t *this, task_t *task)
1929 {
1930 this->task_manager->queue_task(this->task_manager, task);
1931 }
1932
1933 METHOD(ike_sa_t, inherit, void,
1934 private_ike_sa_t *this, ike_sa_t *other_public)
1935 {
1936 private_ike_sa_t *other = (private_ike_sa_t*)other_public;
1937 child_sa_t *child_sa;
1938 attribute_entry_t *entry;
1939 enumerator_t *enumerator;
1940 auth_cfg_t *cfg;
1941 host_t *vip;
1942
1943 /* apply hosts and ids */
1944 this->my_host->destroy(this->my_host);
1945 this->other_host->destroy(this->other_host);
1946 this->my_id->destroy(this->my_id);
1947 this->other_id->destroy(this->other_id);
1948 this->my_host = other->my_host->clone(other->my_host);
1949 this->other_host = other->other_host->clone(other->other_host);
1950 this->my_id = other->my_id->clone(other->my_id);
1951 this->other_id = other->other_id->clone(other->other_id);
1952
1953 /* apply assigned virtual IPs... */
1954 while (this->my_vips->remove_last(this->my_vips, (void**)&vip) == SUCCESS)
1955 {
1956 other->my_vips->insert_first(other->my_vips, vip);
1957 }
1958 while (this->other_vips->remove_last(this->other_vips,
1959 (void**)&vip) == SUCCESS)
1960 {
1961 other->other_vips->insert_first(other->other_vips, vip);
1962 }
1963
1964 /* authentication information */
1965 enumerator = other->my_auths->create_enumerator(other->my_auths);
1966 while (enumerator->enumerate(enumerator, &cfg))
1967 {
1968 this->my_auths->insert_last(this->my_auths, cfg->clone(cfg));
1969 }
1970 enumerator->destroy(enumerator);
1971 enumerator = other->other_auths->create_enumerator(other->other_auths);
1972 while (enumerator->enumerate(enumerator, &cfg))
1973 {
1974 this->other_auths->insert_last(this->other_auths, cfg->clone(cfg));
1975 }
1976 enumerator->destroy(enumerator);
1977
1978 /* ... and configuration attributes */
1979 while (other->attributes->remove_last(other->attributes,
1980 (void**)&entry) == SUCCESS)
1981 {
1982 this->attributes->insert_first(this->attributes, entry);
1983 }
1984
1985 /* inherit all conditions */
1986 this->conditions = other->conditions;
1987 if (this->conditions & COND_NAT_HERE)
1988 {
1989 send_keepalive(this);
1990 }
1991
1992 #ifdef ME
1993 if (other->is_mediation_server)
1994 {
1995 act_as_mediation_server(this);
1996 }
1997 else if (other->server_reflexive_host)
1998 {
1999 this->server_reflexive_host = other->server_reflexive_host->clone(
2000 other->server_reflexive_host);
2001 }
2002 #endif /* ME */
2003
2004 /* adopt all children */
2005 while (other->child_sas->remove_last(other->child_sas,
2006 (void**)&child_sa) == SUCCESS)
2007 {
2008 this->child_sas->insert_first(this->child_sas, (void*)child_sa);
2009 }
2010
2011 /* move pending tasks to the new IKE_SA */
2012 this->task_manager->adopt_tasks(this->task_manager, other->task_manager);
2013
2014 /* reauthentication timeout survives a rekeying */
2015 if (other->stats[STAT_REAUTH])
2016 {
2017 time_t reauth, delete, now = time_monotonic(NULL);
2018
2019 this->stats[STAT_REAUTH] = other->stats[STAT_REAUTH];
2020 reauth = this->stats[STAT_REAUTH] - now;
2021 delete = reauth + this->peer_cfg->get_over_time(this->peer_cfg);
2022 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH] + delete;
2023 DBG1(DBG_IKE, "rescheduling reauthentication in %ds after rekeying, "
2024 "lifetime reduced to %ds", reauth, delete);
2025 lib->scheduler->schedule_job(lib->scheduler,
2026 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE), reauth);
2027 lib->scheduler->schedule_job(lib->scheduler,
2028 (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE), delete);
2029 }
2030 }
2031
2032 METHOD(ike_sa_t, destroy, void,
2033 private_ike_sa_t *this)
2034 {
2035 attribute_entry_t *entry;
2036 host_t *vip;
2037
2038 charon->bus->set_sa(charon->bus, &this->public);
2039
2040 set_state(this, IKE_DESTROYING);
2041 DESTROY_IF(this->task_manager);
2042
2043 /* remove attributes first, as we pass the IKE_SA to the handler */
2044 while (this->attributes->remove_last(this->attributes,
2045 (void**)&entry) == SUCCESS)
2046 {
2047 hydra->attributes->release(hydra->attributes, entry->handler,
2048 this->other_id, entry->type, entry->data);
2049 free(entry->data.ptr);
2050 free(entry);
2051 }
2052 this->attributes->destroy(this->attributes);
2053
2054 this->child_sas->destroy_offset(this->child_sas, offsetof(child_sa_t, destroy));
2055
2056 /* unset SA after here to avoid usage by the listeners */
2057 charon->bus->set_sa(charon->bus, NULL);
2058
2059 DESTROY_IF(this->keymat);
2060
2061 while (this->my_vips->remove_last(this->my_vips, (void**)&vip) == SUCCESS)
2062 {
2063 hydra->kernel_interface->del_ip(hydra->kernel_interface, vip);
2064 vip->destroy(vip);
2065 }
2066 this->my_vips->destroy(this->my_vips);
2067 while (this->other_vips->remove_last(this->other_vips,
2068 (void**)&vip) == SUCCESS)
2069 {
2070 if (this->peer_cfg)
2071 {
2072 enumerator_t *enumerator;
2073 char *pool;
2074
2075 enumerator = this->peer_cfg->create_pool_enumerator(this->peer_cfg);
2076 while (enumerator->enumerate(enumerator, &pool))
2077 {
2078 if (hydra->attributes->release_address(hydra->attributes, pool,
2079 vip, get_other_eap_id(this)))
2080 {
2081 break;
2082 }
2083 }
2084 enumerator->destroy(enumerator);
2085 }
2086 vip->destroy(vip);
2087 }
2088 this->other_vips->destroy(this->other_vips);
2089 this->peer_addresses->destroy_offset(this->peer_addresses,
2090 offsetof(host_t, destroy));
2091 #ifdef ME
2092 if (this->is_mediation_server)
2093 {
2094 charon->mediation_manager->remove(charon->mediation_manager,
2095 this->ike_sa_id);
2096 }
2097 DESTROY_IF(this->server_reflexive_host);
2098 chunk_free(&this->connect_id);
2099 #endif /* ME */
2100 free(this->nat_detection_dest.ptr);
2101
2102 DESTROY_IF(this->my_host);
2103 DESTROY_IF(this->other_host);
2104 DESTROY_IF(this->my_id);
2105 DESTROY_IF(this->other_id);
2106 DESTROY_IF(this->local_host);
2107 DESTROY_IF(this->remote_host);
2108
2109 DESTROY_IF(this->ike_cfg);
2110 DESTROY_IF(this->peer_cfg);
2111 DESTROY_IF(this->proposal);
2112 this->my_auth->destroy(this->my_auth);
2113 this->other_auth->destroy(this->other_auth);
2114 this->my_auths->destroy_offset(this->my_auths,
2115 offsetof(auth_cfg_t, destroy));
2116 this->other_auths->destroy_offset(this->other_auths,
2117 offsetof(auth_cfg_t, destroy));
2118
2119 this->ike_sa_id->destroy(this->ike_sa_id);
2120 free(this);
2121 }
2122
2123 /*
2124 * Described in header.
2125 */
2126 ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id, bool initiator,
2127 ike_version_t version)
2128 {
2129 private_ike_sa_t *this;
2130 static u_int32_t unique_id = 0;
2131
2132 if (version == IKE_ANY)
2133 { /* prefer IKEv2 if protocol not specified */
2134 #ifdef USE_IKEV2
2135 version = IKEV2;
2136 #else
2137 version = IKEV1;
2138 #endif
2139 }
2140
2141 INIT(this,
2142 .public = {
2143 .get_version = _get_version,
2144 .get_state = _get_state,
2145 .set_state = _set_state,
2146 .get_name = _get_name,
2147 .get_statistic = _get_statistic,
2148 .set_statistic = _set_statistic,
2149 .process_message = _process_message,
2150 .initiate = _initiate,
2151 .retry_initiate = _retry_initiate,
2152 .get_ike_cfg = _get_ike_cfg,
2153 .set_ike_cfg = _set_ike_cfg,
2154 .get_peer_cfg = _get_peer_cfg,
2155 .set_peer_cfg = _set_peer_cfg,
2156 .get_auth_cfg = _get_auth_cfg,
2157 .create_auth_cfg_enumerator = _create_auth_cfg_enumerator,
2158 .add_auth_cfg = _add_auth_cfg,
2159 .get_proposal = _get_proposal,
2160 .set_proposal = _set_proposal,
2161 .get_id = _get_id,
2162 .get_my_host = _get_my_host,
2163 .set_my_host = _set_my_host,
2164 .get_other_host = _get_other_host,
2165 .set_other_host = _set_other_host,
2166 .set_message_id = _set_message_id,
2167 .float_ports = _float_ports,
2168 .update_hosts = _update_hosts,
2169 .get_my_id = _get_my_id,
2170 .set_my_id = _set_my_id,
2171 .get_other_id = _get_other_id,
2172 .set_other_id = _set_other_id,
2173 .get_other_eap_id = _get_other_eap_id,
2174 .enable_extension = _enable_extension,
2175 .supports_extension = _supports_extension,
2176 .set_condition = _set_condition,
2177 .has_condition = _has_condition,
2178 .set_pending_updates = _set_pending_updates,
2179 .get_pending_updates = _get_pending_updates,
2180 .create_peer_address_enumerator = _create_peer_address_enumerator,
2181 .add_peer_address = _add_peer_address,
2182 .clear_peer_addresses = _clear_peer_addresses,
2183 .has_mapping_changed = _has_mapping_changed,
2184 .retransmit = _retransmit,
2185 .delete = _delete_,
2186 .destroy = _destroy,
2187 .send_dpd = _send_dpd,
2188 .send_keepalive = _send_keepalive,
2189 .get_keymat = _get_keymat,
2190 .add_child_sa = _add_child_sa,
2191 .get_child_sa = _get_child_sa,
2192 .get_child_count = _get_child_count,
2193 .create_child_sa_enumerator = _create_child_sa_enumerator,
2194 .remove_child_sa = _remove_child_sa,
2195 .rekey_child_sa = _rekey_child_sa,
2196 .delete_child_sa = _delete_child_sa,
2197 .destroy_child_sa = _destroy_child_sa,
2198 .rekey = _rekey,
2199 .reauth = _reauth,
2200 .reestablish = _reestablish,
2201 .set_auth_lifetime = _set_auth_lifetime,
2202 .roam = _roam,
2203 .inherit = _inherit,
2204 .generate_message = _generate_message,
2205 .reset = _reset,
2206 .get_unique_id = _get_unique_id,
2207 .add_virtual_ip = _add_virtual_ip,
2208 .clear_virtual_ips = _clear_virtual_ips,
2209 .create_virtual_ip_enumerator = _create_virtual_ip_enumerator,
2210 .add_configuration_attribute = _add_configuration_attribute,
2211 .set_kmaddress = _set_kmaddress,
2212 .create_task_enumerator = _create_task_enumerator,
2213 .flush_queue = _flush_queue,
2214 .queue_task = _queue_task,
2215 #ifdef ME
2216 .act_as_mediation_server = _act_as_mediation_server,
2217 .get_server_reflexive_host = _get_server_reflexive_host,
2218 .set_server_reflexive_host = _set_server_reflexive_host,
2219 .get_connect_id = _get_connect_id,
2220 .initiate_mediation = _initiate_mediation,
2221 .initiate_mediated = _initiate_mediated,
2222 .relay = _relay,
2223 .callback = _callback,
2224 .respond = _respond,
2225 #endif /* ME */
2226 },
2227 .ike_sa_id = ike_sa_id->clone(ike_sa_id),
2228 .version = version,
2229 .child_sas = linked_list_create(),
2230 .my_host = host_create_any(AF_INET),
2231 .other_host = host_create_any(AF_INET),
2232 .my_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2233 .other_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2234 .keymat = keymat_create(version, initiator),
2235 .state = IKE_CREATED,
2236 .stats[STAT_INBOUND] = time_monotonic(NULL),
2237 .stats[STAT_OUTBOUND] = time_monotonic(NULL),
2238 .my_auth = auth_cfg_create(),
2239 .other_auth = auth_cfg_create(),
2240 .my_auths = linked_list_create(),
2241 .other_auths = linked_list_create(),
2242 .unique_id = ++unique_id,
2243 .peer_addresses = linked_list_create(),
2244 .my_vips = linked_list_create(),
2245 .other_vips = linked_list_create(),
2246 .attributes = linked_list_create(),
2247 .keepalive_interval = lib->settings->get_time(lib->settings,
2248 "%s.keep_alive", KEEPALIVE_INTERVAL, charon->name),
2249 .retry_initiate_interval = lib->settings->get_time(lib->settings,
2250 "%s.retry_initiate_interval", 0, charon->name),
2251 .flush_auth_cfg = lib->settings->get_bool(lib->settings,
2252 "%s.flush_auth_cfg", FALSE, charon->name),
2253 );
2254
2255 if (version == IKEV2)
2256 { /* always supported with IKEv2 */
2257 enable_extension(this, EXT_DPD);
2258 }
2259
2260 this->task_manager = task_manager_create(&this->public);
2261 this->my_host->set_port(this->my_host,
2262 charon->socket->get_port(charon->socket, FALSE));
2263
2264 if (!this->task_manager || !this->keymat)
2265 {
2266 DBG1(DBG_IKE, "IKE version %d not supported", this->version);
2267 destroy(this);
2268 return NULL;
2269 }
2270 return &this->public;
2271 }