Make the UDP ports charon listens for packets on (and uses as source ports) configurable.
[strongswan.git] / src / libcharon / sa / ike_sa.c
1 /*
2 * Copyright (C) 2006-2012 Tobias Brunner
3 * Copyright (C) 2006 Daniel Roethlisberger
4 * Copyright (C) 2005-2009 Martin Willi
5 * Copyright (C) 2005 Jan Hutter
6 * Hochschule fuer Technik Rapperswil
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 * for more details.
17 */
18
19 #include <string.h>
20 #include <sys/stat.h>
21 #include <errno.h>
22 #include <time.h>
23
24 #include "ike_sa.h"
25
26 #include <library.h>
27 #include <hydra.h>
28 #include <daemon.h>
29 #include <utils/linked_list.h>
30 #include <utils/lexparser.h>
31 #include <processing/jobs/retransmit_job.h>
32 #include <processing/jobs/delete_ike_sa_job.h>
33 #include <processing/jobs/send_dpd_job.h>
34 #include <processing/jobs/send_keepalive_job.h>
35 #include <processing/jobs/rekey_ike_sa_job.h>
36 #include <processing/jobs/retry_initiate_job.h>
37 #include <sa/ikev2/tasks/ike_auth_lifetime.h>
38
39 #ifdef ME
40 #include <sa/ikev2/tasks/ike_me.h>
41 #include <processing/jobs/initiate_mediation_job.h>
42 #endif
43
44 ENUM(ike_sa_state_names, IKE_CREATED, IKE_DESTROYING,
45 "CREATED",
46 "CONNECTING",
47 "ESTABLISHED",
48 "PASSIVE",
49 "REKEYING",
50 "DELETING",
51 "DESTROYING",
52 );
53
54 typedef struct private_ike_sa_t private_ike_sa_t;
55 typedef struct attribute_entry_t attribute_entry_t;
56
57 /**
58 * Private data of an ike_sa_t object.
59 */
60 struct private_ike_sa_t {
61
62 /**
63 * Public members
64 */
65 ike_sa_t public;
66
67 /**
68 * Identifier for the current IKE_SA.
69 */
70 ike_sa_id_t *ike_sa_id;
71
72 /**
73 * IKE version of this SA.
74 */
75 ike_version_t version;
76
77 /**
78 * unique numerical ID for this IKE_SA.
79 */
80 u_int32_t unique_id;
81
82 /**
83 * Current state of the IKE_SA
84 */
85 ike_sa_state_t state;
86
87 /**
88 * IKE configuration used to set up this IKE_SA
89 */
90 ike_cfg_t *ike_cfg;
91
92 /**
93 * Peer and authentication information to establish IKE_SA.
94 */
95 peer_cfg_t *peer_cfg;
96
97 /**
98 * currently used authentication ruleset, local (as auth_cfg_t)
99 */
100 auth_cfg_t *my_auth;
101
102 /**
103 * list of completed local authentication rounds
104 */
105 linked_list_t *my_auths;
106
107 /**
108 * list of completed remote authentication rounds
109 */
110 linked_list_t *other_auths;
111
112 /**
113 * currently used authentication constraints, remote (as auth_cfg_t)
114 */
115 auth_cfg_t *other_auth;
116
117 /**
118 * Selected IKE proposal
119 */
120 proposal_t *proposal;
121
122 /**
123 * Juggles tasks to process messages
124 */
125 task_manager_t *task_manager;
126
127 /**
128 * Address of local host
129 */
130 host_t *my_host;
131
132 /**
133 * Address of remote host
134 */
135 host_t *other_host;
136
137 #ifdef ME
138 /**
139 * Are we mediation server
140 */
141 bool is_mediation_server;
142
143 /**
144 * Server reflexive host
145 */
146 host_t *server_reflexive_host;
147
148 /**
149 * Connect ID
150 */
151 chunk_t connect_id;
152 #endif /* ME */
153
154 /**
155 * Identification used for us
156 */
157 identification_t *my_id;
158
159 /**
160 * Identification used for other
161 */
162 identification_t *other_id;
163
164 /**
165 * set of extensions the peer supports
166 */
167 ike_extension_t extensions;
168
169 /**
170 * set of condition flags currently enabled for this IKE_SA
171 */
172 ike_condition_t conditions;
173
174 /**
175 * Linked List containing the child sa's of the current IKE_SA.
176 */
177 linked_list_t *child_sas;
178
179 /**
180 * keymat of this IKE_SA
181 */
182 keymat_t *keymat;
183
184 /**
185 * Virtual IP on local host, if any
186 */
187 host_t *my_virtual_ip;
188
189 /**
190 * Virtual IP on remote host, if any
191 */
192 host_t *other_virtual_ip;
193
194 /**
195 * List of configuration attributes (attribute_entry_t)
196 */
197 linked_list_t *attributes;
198
199 /**
200 * list of peer's addresses, additional ones transmitted via MOBIKE
201 */
202 linked_list_t *peer_addresses;
203
204 /**
205 * previously value of received DESTINATION_IP hash
206 */
207 chunk_t nat_detection_dest;
208
209 /**
210 * number pending UPDATE_SA_ADDRESS (MOBIKE)
211 */
212 u_int32_t pending_updates;
213
214 /**
215 * NAT keep alive interval
216 */
217 u_int32_t keepalive_interval;
218
219 /**
220 * interval for retries during initiation (e.g. if DNS resolution failed),
221 * 0 to disable (default)
222 */
223 u_int32_t retry_initiate_interval;
224
225 /**
226 * TRUE if a retry_initiate_job has been queued
227 */
228 bool retry_initiate_queued;
229
230 /**
231 * Timestamps for this IKE_SA
232 */
233 u_int32_t stats[STAT_MAX];
234
235 /**
236 * how many times we have retried so far (keyingtries)
237 */
238 u_int32_t keyingtry;
239
240 /**
241 * local host address to be used for IKE, set via MIGRATE kernel message
242 */
243 host_t *local_host;
244
245 /**
246 * remote host address to be used for IKE, set via MIGRATE kernel message
247 */
248 host_t *remote_host;
249
250 /**
251 * Flush auth configs once established?
252 */
253 bool flush_auth_cfg;
254
255 /**
256 * TRUE if we are currently reauthenticating this IKE_SA
257 */
258 bool is_reauthenticating;
259 };
260
261 /**
262 * Entry to maintain install configuration attributes during IKE_SA lifetime
263 */
264 struct attribute_entry_t {
265 /** handler used to install this attribute */
266 attribute_handler_t *handler;
267 /** attribute type */
268 configuration_attribute_type_t type;
269 /** attribute data */
270 chunk_t data;
271 };
272
273 /**
274 * get the time of the latest traffic processed by the kernel
275 */
276 static time_t get_use_time(private_ike_sa_t* this, bool inbound)
277 {
278 enumerator_t *enumerator;
279 child_sa_t *child_sa;
280 time_t use_time, current;
281
282 if (inbound)
283 {
284 use_time = this->stats[STAT_INBOUND];
285 }
286 else
287 {
288 use_time = this->stats[STAT_OUTBOUND];
289 }
290 enumerator = this->child_sas->create_enumerator(this->child_sas);
291 while (enumerator->enumerate(enumerator, &child_sa))
292 {
293 child_sa->get_usestats(child_sa, inbound, &current, NULL);
294 use_time = max(use_time, current);
295 }
296 enumerator->destroy(enumerator);
297
298 return use_time;
299 }
300
301 METHOD(ike_sa_t, get_unique_id, u_int32_t,
302 private_ike_sa_t *this)
303 {
304 return this->unique_id;
305 }
306
307 METHOD(ike_sa_t, get_name, char*,
308 private_ike_sa_t *this)
309 {
310 if (this->peer_cfg)
311 {
312 return this->peer_cfg->get_name(this->peer_cfg);
313 }
314 return "(unnamed)";
315 }
316
317 METHOD(ike_sa_t, get_statistic, u_int32_t,
318 private_ike_sa_t *this, statistic_t kind)
319 {
320 if (kind < STAT_MAX)
321 {
322 return this->stats[kind];
323 }
324 return 0;
325 }
326
327 METHOD(ike_sa_t, set_statistic, void,
328 private_ike_sa_t *this, statistic_t kind, u_int32_t value)
329 {
330 if (kind < STAT_MAX)
331 {
332 this->stats[kind] = value;
333 }
334 }
335
336 METHOD(ike_sa_t, get_my_host, host_t*,
337 private_ike_sa_t *this)
338 {
339 return this->my_host;
340 }
341
342 METHOD(ike_sa_t, set_my_host, void,
343 private_ike_sa_t *this, host_t *me)
344 {
345 DESTROY_IF(this->my_host);
346 this->my_host = me;
347 }
348
349 METHOD(ike_sa_t, get_other_host, host_t*,
350 private_ike_sa_t *this)
351 {
352 return this->other_host;
353 }
354
355 METHOD(ike_sa_t, set_other_host, void,
356 private_ike_sa_t *this, host_t *other)
357 {
358 DESTROY_IF(this->other_host);
359 this->other_host = other;
360 }
361
362 METHOD(ike_sa_t, get_peer_cfg, peer_cfg_t*,
363 private_ike_sa_t *this)
364 {
365 return this->peer_cfg;
366 }
367
368 METHOD(ike_sa_t, set_peer_cfg, void,
369 private_ike_sa_t *this, peer_cfg_t *peer_cfg)
370 {
371 peer_cfg->get_ref(peer_cfg);
372 DESTROY_IF(this->peer_cfg);
373 this->peer_cfg = peer_cfg;
374
375 if (this->ike_cfg == NULL)
376 {
377 this->ike_cfg = peer_cfg->get_ike_cfg(peer_cfg);
378 this->ike_cfg->get_ref(this->ike_cfg);
379 }
380 }
381
382 METHOD(ike_sa_t, get_auth_cfg, auth_cfg_t*,
383 private_ike_sa_t *this, bool local)
384 {
385 if (local)
386 {
387 return this->my_auth;
388 }
389 return this->other_auth;
390 }
391
392 METHOD(ike_sa_t, add_auth_cfg, void,
393 private_ike_sa_t *this, bool local, auth_cfg_t *cfg)
394 {
395 if (local)
396 {
397 this->my_auths->insert_last(this->my_auths, cfg);
398 }
399 else
400 {
401 this->other_auths->insert_last(this->other_auths, cfg);
402 }
403 }
404
405 METHOD(ike_sa_t, create_auth_cfg_enumerator, enumerator_t*,
406 private_ike_sa_t *this, bool local)
407 {
408 if (local)
409 {
410 return this->my_auths->create_enumerator(this->my_auths);
411 }
412 return this->other_auths->create_enumerator(this->other_auths);
413 }
414
415 /**
416 * Flush the stored authentication round information
417 */
418 static void flush_auth_cfgs(private_ike_sa_t *this)
419 {
420 auth_cfg_t *cfg;
421
422 this->my_auth->purge(this->my_auth, FALSE);
423 this->other_auth->purge(this->other_auth, FALSE);
424
425 while (this->my_auths->remove_last(this->my_auths,
426 (void**)&cfg) == SUCCESS)
427 {
428 cfg->destroy(cfg);
429 }
430 while (this->other_auths->remove_last(this->other_auths,
431 (void**)&cfg) == SUCCESS)
432 {
433 cfg->destroy(cfg);
434 }
435 }
436
437 METHOD(ike_sa_t, get_proposal, proposal_t*,
438 private_ike_sa_t *this)
439 {
440 return this->proposal;
441 }
442
443 METHOD(ike_sa_t, set_proposal, void,
444 private_ike_sa_t *this, proposal_t *proposal)
445 {
446 DESTROY_IF(this->proposal);
447 this->proposal = proposal->clone(proposal);
448 }
449
450 METHOD(ike_sa_t, set_message_id, void,
451 private_ike_sa_t *this, bool initiate, u_int32_t mid)
452 {
453 if (initiate)
454 {
455 this->task_manager->reset(this->task_manager, mid, UINT_MAX);
456 }
457 else
458 {
459 this->task_manager->reset(this->task_manager, UINT_MAX, mid);
460 }
461 }
462
463 METHOD(ike_sa_t, send_keepalive, void,
464 private_ike_sa_t *this)
465 {
466 send_keepalive_job_t *job;
467 time_t last_out, now, diff;
468
469 if (!(this->conditions & COND_NAT_HERE) || this->keepalive_interval == 0)
470 { /* disable keep alives if we are not NATed anymore */
471 return;
472 }
473
474 last_out = get_use_time(this, FALSE);
475 now = time_monotonic(NULL);
476
477 diff = now - last_out;
478
479 if (diff >= this->keepalive_interval)
480 {
481 packet_t *packet;
482 chunk_t data;
483
484 packet = packet_create();
485 packet->set_source(packet, this->my_host->clone(this->my_host));
486 packet->set_destination(packet, this->other_host->clone(this->other_host));
487 data.ptr = malloc(1);
488 data.ptr[0] = 0xFF;
489 data.len = 1;
490 packet->set_data(packet, data);
491 DBG1(DBG_IKE, "sending keep alive");
492 charon->sender->send(charon->sender, packet);
493 diff = 0;
494 }
495 job = send_keepalive_job_create(this->ike_sa_id);
496 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
497 this->keepalive_interval - diff);
498 }
499
500 METHOD(ike_sa_t, get_ike_cfg, ike_cfg_t*,
501 private_ike_sa_t *this)
502 {
503 return this->ike_cfg;
504 }
505
506 METHOD(ike_sa_t, set_ike_cfg, void,
507 private_ike_sa_t *this, ike_cfg_t *ike_cfg)
508 {
509 ike_cfg->get_ref(ike_cfg);
510 this->ike_cfg = ike_cfg;
511 }
512
513 METHOD(ike_sa_t, enable_extension, void,
514 private_ike_sa_t *this, ike_extension_t extension)
515 {
516 this->extensions |= extension;
517 }
518
519 METHOD(ike_sa_t, supports_extension, bool,
520 private_ike_sa_t *this, ike_extension_t extension)
521 {
522 return (this->extensions & extension) != FALSE;
523 }
524
525 METHOD(ike_sa_t, has_condition, bool,
526 private_ike_sa_t *this, ike_condition_t condition)
527 {
528 return (this->conditions & condition) != FALSE;
529 }
530
531 METHOD(ike_sa_t, set_condition, void,
532 private_ike_sa_t *this, ike_condition_t condition, bool enable)
533 {
534 if (has_condition(this, condition) != enable)
535 {
536 if (enable)
537 {
538 this->conditions |= condition;
539 switch (condition)
540 {
541 case COND_NAT_HERE:
542 DBG1(DBG_IKE, "local host is behind NAT, sending keep alives");
543 this->conditions |= COND_NAT_ANY;
544 send_keepalive(this);
545 break;
546 case COND_NAT_THERE:
547 DBG1(DBG_IKE, "remote host is behind NAT");
548 this->conditions |= COND_NAT_ANY;
549 break;
550 case COND_NAT_FAKE:
551 DBG1(DBG_IKE, "faking NAT situation to enforce UDP encapsulation");
552 this->conditions |= COND_NAT_ANY;
553 break;
554 default:
555 break;
556 }
557 }
558 else
559 {
560 this->conditions &= ~condition;
561 switch (condition)
562 {
563 case COND_NAT_HERE:
564 case COND_NAT_FAKE:
565 case COND_NAT_THERE:
566 set_condition(this, COND_NAT_ANY,
567 has_condition(this, COND_NAT_HERE) ||
568 has_condition(this, COND_NAT_THERE) ||
569 has_condition(this, COND_NAT_FAKE));
570 break;
571 default:
572 break;
573 }
574 }
575 }
576 }
577
578 METHOD(ike_sa_t, send_dpd, status_t,
579 private_ike_sa_t *this)
580 {
581 job_t *job;
582 time_t diff, delay;
583
584 if (this->state == IKE_PASSIVE)
585 {
586 return INVALID_STATE;
587 }
588 delay = this->peer_cfg->get_dpd(this->peer_cfg);
589 if (this->task_manager->busy(this->task_manager))
590 {
591 /* an exchange is in the air, no need to start a DPD check */
592 diff = 0;
593 }
594 else
595 {
596 /* check if there was any inbound traffic */
597 time_t last_in, now;
598 last_in = get_use_time(this, TRUE);
599 now = time_monotonic(NULL);
600 diff = now - last_in;
601 if (!delay || diff >= delay)
602 {
603 /* to long ago, initiate dead peer detection */
604 DBG1(DBG_IKE, "sending DPD request");
605 this->task_manager->queue_dpd(this->task_manager);
606 diff = 0;
607 }
608 }
609 /* recheck in "interval" seconds */
610 if (delay)
611 {
612 job = (job_t*)send_dpd_job_create(this->ike_sa_id);
613 lib->scheduler->schedule_job(lib->scheduler, job, delay - diff);
614 }
615 return this->task_manager->initiate(this->task_manager);
616 }
617
618 METHOD(ike_sa_t, get_state, ike_sa_state_t,
619 private_ike_sa_t *this)
620 {
621 return this->state;
622 }
623
624 METHOD(ike_sa_t, set_state, void,
625 private_ike_sa_t *this, ike_sa_state_t state)
626 {
627 bool trigger_dpd = FALSE;
628
629 DBG2(DBG_IKE, "IKE_SA %s[%d] state change: %N => %N",
630 get_name(this), this->unique_id,
631 ike_sa_state_names, this->state,
632 ike_sa_state_names, state);
633
634 switch (state)
635 {
636 case IKE_ESTABLISHED:
637 {
638 if (this->state == IKE_CONNECTING ||
639 this->state == IKE_PASSIVE)
640 {
641 job_t *job;
642 u_int32_t t;
643
644 /* calculate rekey, reauth and lifetime */
645 this->stats[STAT_ESTABLISHED] = time_monotonic(NULL);
646
647 /* schedule rekeying if we have a time which is smaller than
648 * an already scheduled rekeying */
649 t = this->peer_cfg->get_rekey_time(this->peer_cfg, TRUE);
650 if (t && (this->stats[STAT_REKEY] == 0 ||
651 (this->stats[STAT_REKEY] > t + this->stats[STAT_ESTABLISHED])))
652 {
653 this->stats[STAT_REKEY] = t + this->stats[STAT_ESTABLISHED];
654 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, FALSE);
655 lib->scheduler->schedule_job(lib->scheduler, job, t);
656 DBG1(DBG_IKE, "scheduling rekeying in %ds", t);
657 }
658 t = this->peer_cfg->get_reauth_time(this->peer_cfg, TRUE);
659 if (t && (this->stats[STAT_REAUTH] == 0 ||
660 (this->stats[STAT_REAUTH] > t + this->stats[STAT_ESTABLISHED])))
661 {
662 this->stats[STAT_REAUTH] = t + this->stats[STAT_ESTABLISHED];
663 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE);
664 lib->scheduler->schedule_job(lib->scheduler, job, t);
665 DBG1(DBG_IKE, "scheduling reauthentication in %ds", t);
666 }
667 t = this->peer_cfg->get_over_time(this->peer_cfg);
668 if (this->stats[STAT_REKEY] || this->stats[STAT_REAUTH])
669 {
670 if (this->stats[STAT_REAUTH] == 0)
671 {
672 this->stats[STAT_DELETE] = this->stats[STAT_REKEY];
673 }
674 else if (this->stats[STAT_REKEY] == 0)
675 {
676 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH];
677 }
678 else
679 {
680 this->stats[STAT_DELETE] = min(this->stats[STAT_REKEY],
681 this->stats[STAT_REAUTH]);
682 }
683 this->stats[STAT_DELETE] += t;
684 t = this->stats[STAT_DELETE] - this->stats[STAT_ESTABLISHED];
685 job = (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE);
686 lib->scheduler->schedule_job(lib->scheduler, job, t);
687 DBG1(DBG_IKE, "maximum IKE_SA lifetime %ds", t);
688 }
689 trigger_dpd = this->peer_cfg->get_dpd(this->peer_cfg);
690 }
691 break;
692 }
693 default:
694 break;
695 }
696 charon->bus->ike_state_change(charon->bus, &this->public, state);
697 this->state = state;
698
699 if (trigger_dpd)
700 {
701 if (supports_extension(this, EXT_DPD))
702 {
703 send_dpd(this);
704 }
705 else
706 {
707 DBG1(DBG_IKE, "DPD not supported by peer, disabled");
708 }
709 }
710 }
711
712 METHOD(ike_sa_t, reset, void,
713 private_ike_sa_t *this)
714 {
715 /* the responder ID is reset, as peer may choose another one */
716 if (this->ike_sa_id->is_initiator(this->ike_sa_id))
717 {
718 this->ike_sa_id->set_responder_spi(this->ike_sa_id, 0);
719 }
720
721 set_state(this, IKE_CREATED);
722
723 flush_auth_cfgs(this);
724
725 this->keymat->destroy(this->keymat);
726 this->keymat = keymat_create(this->version,
727 this->ike_sa_id->is_initiator(this->ike_sa_id));
728
729 this->task_manager->reset(this->task_manager, 0, 0);
730 }
731
732 METHOD(ike_sa_t, get_keymat, keymat_t*,
733 private_ike_sa_t *this)
734 {
735 return this->keymat;
736 }
737
738 METHOD(ike_sa_t, set_virtual_ip, void,
739 private_ike_sa_t *this, bool local, host_t *ip)
740 {
741 if (local)
742 {
743 DBG1(DBG_IKE, "installing new virtual IP %H", ip);
744 if (hydra->kernel_interface->add_ip(hydra->kernel_interface, ip,
745 this->my_host) == SUCCESS)
746 {
747 if (this->my_virtual_ip)
748 {
749 DBG1(DBG_IKE, "removing old virtual IP %H", this->my_virtual_ip);
750 hydra->kernel_interface->del_ip(hydra->kernel_interface,
751 this->my_virtual_ip);
752 }
753 DESTROY_IF(this->my_virtual_ip);
754 this->my_virtual_ip = ip->clone(ip);
755 }
756 else
757 {
758 DBG1(DBG_IKE, "installing virtual IP %H failed", ip);
759 this->my_virtual_ip = NULL;
760 }
761 }
762 else
763 {
764 DESTROY_IF(this->other_virtual_ip);
765 this->other_virtual_ip = ip->clone(ip);
766 }
767 }
768
769 METHOD(ike_sa_t, get_virtual_ip, host_t*,
770 private_ike_sa_t *this, bool local)
771 {
772 if (local)
773 {
774 return this->my_virtual_ip;
775 }
776 else
777 {
778 return this->other_virtual_ip;
779 }
780 }
781
782 METHOD(ike_sa_t, add_peer_address, void,
783 private_ike_sa_t *this, host_t *host)
784 {
785 this->peer_addresses->insert_last(this->peer_addresses, host);
786 }
787
788 METHOD(ike_sa_t, create_peer_address_enumerator, enumerator_t*,
789 private_ike_sa_t *this)
790 {
791 if (this->peer_addresses->get_count(this->peer_addresses))
792 {
793 return this->peer_addresses->create_enumerator(this->peer_addresses);
794 }
795 /* in case we don't have MOBIKE */
796 return enumerator_create_single(this->other_host, NULL);
797 }
798
799 METHOD(ike_sa_t, clear_peer_addresses, void,
800 private_ike_sa_t *this)
801 {
802 enumerator_t *enumerator;
803 host_t *host;
804
805 enumerator = this->peer_addresses->create_enumerator(this->peer_addresses);
806 while (enumerator->enumerate(enumerator, (void**)&host))
807 {
808 this->peer_addresses->remove_at(this->peer_addresses,
809 enumerator);
810 host->destroy(host);
811 }
812 enumerator->destroy(enumerator);
813 }
814
815 METHOD(ike_sa_t, has_mapping_changed, bool,
816 private_ike_sa_t *this, chunk_t hash)
817 {
818 if (this->nat_detection_dest.ptr == NULL)
819 {
820 this->nat_detection_dest = chunk_clone(hash);
821 return FALSE;
822 }
823 if (chunk_equals(hash, this->nat_detection_dest))
824 {
825 return FALSE;
826 }
827 free(this->nat_detection_dest.ptr);
828 this->nat_detection_dest = chunk_clone(hash);
829 return TRUE;
830 }
831
832 METHOD(ike_sa_t, set_pending_updates, void,
833 private_ike_sa_t *this, u_int32_t updates)
834 {
835 this->pending_updates = updates;
836 }
837
838 METHOD(ike_sa_t, get_pending_updates, u_int32_t,
839 private_ike_sa_t *this)
840 {
841 return this->pending_updates;
842 }
843
844 METHOD(ike_sa_t, float_ports, void,
845 private_ike_sa_t *this)
846 {
847 /* do not switch if we have a custom port from MOBIKE/NAT */
848 if (this->my_host->get_port(this->my_host) == CHARON_UDP_PORT)
849 {
850 this->my_host->set_port(this->my_host, CHARON_NATT_PORT);
851 }
852 if (this->other_host->get_port(this->other_host) == IKEV2_UDP_PORT)
853 {
854 this->other_host->set_port(this->other_host, IKEV2_NATT_PORT);
855 }
856 }
857
858 METHOD(ike_sa_t, update_hosts, void,
859 private_ike_sa_t *this, host_t *me, host_t *other, bool force)
860 {
861 bool update = FALSE;
862
863 if (me == NULL)
864 {
865 me = this->my_host;
866 }
867 if (other == NULL)
868 {
869 other = this->other_host;
870 }
871
872 /* apply hosts on first received message */
873 if (this->my_host->is_anyaddr(this->my_host) ||
874 this->other_host->is_anyaddr(this->other_host))
875 {
876 set_my_host(this, me->clone(me));
877 set_other_host(this, other->clone(other));
878 update = TRUE;
879 }
880 else
881 {
882 /* update our address in any case */
883 if (!me->equals(me, this->my_host))
884 {
885 set_my_host(this, me->clone(me));
886 update = TRUE;
887 }
888
889 if (!other->equals(other, this->other_host))
890 {
891 /* update others address if we are NOT NATed */
892 if (force || !has_condition(this, COND_NAT_HERE))
893 {
894 set_other_host(this, other->clone(other));
895 update = TRUE;
896 }
897 }
898 }
899
900 /* update all associated CHILD_SAs, if required */
901 if (update)
902 {
903 enumerator_t *enumerator;
904 child_sa_t *child_sa;
905
906 enumerator = this->child_sas->create_enumerator(this->child_sas);
907 while (enumerator->enumerate(enumerator, (void**)&child_sa))
908 {
909 if (child_sa->update(child_sa, this->my_host,
910 this->other_host, this->my_virtual_ip,
911 has_condition(this, COND_NAT_ANY)) == NOT_SUPPORTED)
912 {
913 this->public.rekey_child_sa(&this->public,
914 child_sa->get_protocol(child_sa),
915 child_sa->get_spi(child_sa, TRUE));
916 }
917 }
918 enumerator->destroy(enumerator);
919 }
920 }
921
922 METHOD(ike_sa_t, generate_message, status_t,
923 private_ike_sa_t *this, message_t *message, packet_t **packet)
924 {
925 status_t status;
926
927 if (message->is_encoded(message))
928 { /* already done */
929 *packet = message->get_packet(message);
930 return SUCCESS;
931 }
932 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
933 message->set_ike_sa_id(message, this->ike_sa_id);
934 charon->bus->message(charon->bus, message, FALSE, TRUE);
935 status = message->generate(message, this->keymat, packet);
936 if (status == SUCCESS)
937 {
938 charon->bus->message(charon->bus, message, FALSE, FALSE);
939 }
940 return status;
941 }
942
943 METHOD(ike_sa_t, set_kmaddress, void,
944 private_ike_sa_t *this, host_t *local, host_t *remote)
945 {
946 DESTROY_IF(this->local_host);
947 DESTROY_IF(this->remote_host);
948 this->local_host = local->clone(local);
949 this->remote_host = remote->clone(remote);
950 }
951
952 #ifdef ME
953 METHOD(ike_sa_t, act_as_mediation_server, void,
954 private_ike_sa_t *this)
955 {
956 charon->mediation_manager->update_sa_id(charon->mediation_manager,
957 this->other_id, this->ike_sa_id);
958 this->is_mediation_server = TRUE;
959 }
960
961 METHOD(ike_sa_t, get_server_reflexive_host, host_t*,
962 private_ike_sa_t *this)
963 {
964 return this->server_reflexive_host;
965 }
966
967 METHOD(ike_sa_t, set_server_reflexive_host, void,
968 private_ike_sa_t *this, host_t *host)
969 {
970 DESTROY_IF(this->server_reflexive_host);
971 this->server_reflexive_host = host;
972 }
973
974 METHOD(ike_sa_t, get_connect_id, chunk_t,
975 private_ike_sa_t *this)
976 {
977 return this->connect_id;
978 }
979
980 METHOD(ike_sa_t, respond, status_t,
981 private_ike_sa_t *this, identification_t *peer_id, chunk_t connect_id)
982 {
983 ike_me_t *task = ike_me_create(&this->public, TRUE);
984 task->respond(task, peer_id, connect_id);
985 this->task_manager->queue_task(this->task_manager, (task_t*)task);
986 return this->task_manager->initiate(this->task_manager);
987 }
988
989 METHOD(ike_sa_t, callback, status_t,
990 private_ike_sa_t *this, identification_t *peer_id)
991 {
992 ike_me_t *task = ike_me_create(&this->public, TRUE);
993 task->callback(task, peer_id);
994 this->task_manager->queue_task(this->task_manager, (task_t*)task);
995 return this->task_manager->initiate(this->task_manager);
996 }
997
998 METHOD(ike_sa_t, relay, status_t,
999 private_ike_sa_t *this, identification_t *requester, chunk_t connect_id,
1000 chunk_t connect_key, linked_list_t *endpoints, bool response)
1001 {
1002 ike_me_t *task = ike_me_create(&this->public, TRUE);
1003 task->relay(task, requester, connect_id, connect_key, endpoints, response);
1004 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1005 return this->task_manager->initiate(this->task_manager);
1006 }
1007
1008 METHOD(ike_sa_t, initiate_mediation, status_t,
1009 private_ike_sa_t *this, peer_cfg_t *mediated_cfg)
1010 {
1011 ike_me_t *task = ike_me_create(&this->public, TRUE);
1012 task->connect(task, mediated_cfg->get_peer_id(mediated_cfg));
1013 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1014 return this->task_manager->initiate(this->task_manager);
1015 }
1016
1017 METHOD(ike_sa_t, initiate_mediated, status_t,
1018 private_ike_sa_t *this, host_t *me, host_t *other, chunk_t connect_id)
1019 {
1020 set_my_host(this, me->clone(me));
1021 set_other_host(this, other->clone(other));
1022 chunk_free(&this->connect_id);
1023 this->connect_id = chunk_clone(connect_id);
1024 return this->task_manager->initiate(this->task_manager);
1025 }
1026 #endif /* ME */
1027
1028 /**
1029 * Resolve DNS host in configuration
1030 */
1031 static void resolve_hosts(private_ike_sa_t *this)
1032 {
1033 host_t *host;
1034
1035 if (this->remote_host)
1036 {
1037 host = this->remote_host->clone(this->remote_host);
1038 host->set_port(host, IKEV2_UDP_PORT);
1039 }
1040 else
1041 {
1042 char *other_addr;
1043 u_int16_t other_port;
1044
1045 other_addr = this->ike_cfg->get_other_addr(this->ike_cfg, NULL);
1046 other_port = this->ike_cfg->get_other_port(this->ike_cfg);
1047 host = host_create_from_dns(other_addr, 0, other_port);
1048 }
1049 if (host)
1050 {
1051 set_other_host(this, host);
1052 }
1053
1054 if (this->local_host)
1055 {
1056 host = this->local_host->clone(this->local_host);
1057 host->set_port(host, CHARON_UDP_PORT);
1058 }
1059 else
1060 {
1061 char *my_addr;
1062 u_int16_t my_port;
1063 int family = 0;
1064
1065 /* use same address family as for other */
1066 if (!this->other_host->is_anyaddr(this->other_host))
1067 {
1068 family = this->other_host->get_family(this->other_host);
1069 }
1070 my_addr = this->ike_cfg->get_my_addr(this->ike_cfg, NULL);
1071 my_port = this->ike_cfg->get_my_port(this->ike_cfg);
1072 host = host_create_from_dns(my_addr, family, my_port);
1073
1074 if (host && host->is_anyaddr(host) &&
1075 !this->other_host->is_anyaddr(this->other_host))
1076 {
1077 host->destroy(host);
1078 host = hydra->kernel_interface->get_source_addr(
1079 hydra->kernel_interface, this->other_host, NULL);
1080 if (host)
1081 {
1082 host->set_port(host, this->ike_cfg->get_my_port(this->ike_cfg));
1083 }
1084 else
1085 { /* fallback to address family specific %any(6), if configured */
1086 host = host_create_from_dns(my_addr, 0, my_port);
1087 }
1088 }
1089 }
1090 if (host)
1091 {
1092 set_my_host(this, host);
1093 }
1094 }
1095
1096 METHOD(ike_sa_t, initiate, status_t,
1097 private_ike_sa_t *this, child_cfg_t *child_cfg, u_int32_t reqid,
1098 traffic_selector_t *tsi, traffic_selector_t *tsr)
1099 {
1100 bool defer_initiate = FALSE;
1101
1102 if (this->state == IKE_CREATED)
1103 {
1104 if (this->my_host->is_anyaddr(this->my_host) ||
1105 this->other_host->is_anyaddr(this->other_host))
1106 {
1107 resolve_hosts(this);
1108 }
1109
1110 if (this->other_host->is_anyaddr(this->other_host)
1111 #ifdef ME
1112 && !this->peer_cfg->get_mediated_by(this->peer_cfg)
1113 #endif /* ME */
1114 )
1115 {
1116 char *addr = this->ike_cfg->get_other_addr(this->ike_cfg, NULL);
1117 bool is_anyaddr = streq(addr, "%any") || streq(addr, "%any6");
1118
1119 if (is_anyaddr || !this->retry_initiate_interval)
1120 {
1121 if (is_anyaddr)
1122 {
1123 DBG1(DBG_IKE, "unable to initiate to %s", addr);
1124 }
1125 else
1126 {
1127 DBG1(DBG_IKE, "unable to resolve %s, initiate aborted",
1128 addr);
1129 }
1130 DESTROY_IF(child_cfg);
1131 charon->bus->alert(charon->bus, ALERT_PEER_ADDR_FAILED);
1132 return DESTROY_ME;
1133 }
1134 DBG1(DBG_IKE, "unable to resolve %s, retrying in %ds",
1135 addr, this->retry_initiate_interval);
1136 defer_initiate = TRUE;
1137 }
1138
1139 set_condition(this, COND_ORIGINAL_INITIATOR, TRUE);
1140 this->task_manager->queue_ike(this->task_manager);
1141 }
1142
1143 #ifdef ME
1144 if (this->peer_cfg->is_mediation(this->peer_cfg))
1145 {
1146 if (this->state == IKE_ESTABLISHED)
1147 {
1148 /* mediation connection is already established, retrigger state
1149 * change to notify bus listeners */
1150 DBG1(DBG_IKE, "mediation connection is already up");
1151 set_state(this, IKE_ESTABLISHED);
1152 }
1153 DESTROY_IF(child_cfg);
1154 }
1155 else
1156 #endif /* ME */
1157 if (child_cfg)
1158 {
1159 /* normal IKE_SA with CHILD_SA */
1160 this->task_manager->queue_child(this->task_manager, child_cfg, reqid,
1161 tsi, tsr);
1162 #ifdef ME
1163 if (this->peer_cfg->get_mediated_by(this->peer_cfg))
1164 {
1165 /* mediated connection, initiate mediation process */
1166 job_t *job = (job_t*)initiate_mediation_job_create(this->ike_sa_id);
1167 lib->processor->queue_job(lib->processor, job);
1168 return SUCCESS;
1169 }
1170 #endif /* ME */
1171 }
1172
1173 if (defer_initiate)
1174 {
1175 if (!this->retry_initiate_queued)
1176 {
1177 job_t *job = (job_t*)retry_initiate_job_create(this->ike_sa_id);
1178 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
1179 this->retry_initiate_interval);
1180 this->retry_initiate_queued = TRUE;
1181 }
1182 return SUCCESS;
1183 }
1184 this->retry_initiate_queued = FALSE;
1185 return this->task_manager->initiate(this->task_manager);
1186 }
1187
1188 METHOD(ike_sa_t, retry_initiate, status_t,
1189 private_ike_sa_t *this)
1190 {
1191 if (this->retry_initiate_queued)
1192 {
1193 this->retry_initiate_queued = FALSE;
1194 return initiate(this, NULL, 0, NULL, NULL);
1195 }
1196 return SUCCESS;
1197 }
1198
1199 METHOD(ike_sa_t, process_message, status_t,
1200 private_ike_sa_t *this, message_t *message)
1201 {
1202 status_t status;
1203
1204 if (this->state == IKE_PASSIVE)
1205 { /* do not handle messages in passive state */
1206 return FAILED;
1207 }
1208 switch (message->get_exchange_type(message))
1209 {
1210 case ID_PROT:
1211 case AGGRESSIVE:
1212 case IKE_SA_INIT:
1213 case IKE_AUTH:
1214 if (this->state != IKE_CREATED &&
1215 this->state != IKE_CONNECTING)
1216 {
1217 DBG1(DBG_IKE, "ignoring %N in established IKE_SA state",
1218 exchange_type_names, message->get_exchange_type(message));
1219 return FAILED;
1220 }
1221 break;
1222 default:
1223 break;
1224 }
1225 if (message->get_major_version(message) != this->version)
1226 {
1227 DBG1(DBG_IKE, "ignoring %N IKEv%u exchange on %N SA",
1228 exchange_type_names, message->get_exchange_type(message),
1229 message->get_major_version(message),
1230 ike_version_names, this->version);
1231 /* TODO-IKEv1: fall back to IKEv1 if we receive an IKEv1
1232 * INVALID_MAJOR_VERSION on an IKEv2 SA. */
1233 return FAILED;
1234 }
1235 status = this->task_manager->process_message(this->task_manager, message);
1236 if (this->flush_auth_cfg && this->state == IKE_ESTABLISHED)
1237 {
1238 /* authentication completed */
1239 this->flush_auth_cfg = FALSE;
1240 flush_auth_cfgs(this);
1241 }
1242 return status;
1243 }
1244
1245 METHOD(ike_sa_t, get_id, ike_sa_id_t*,
1246 private_ike_sa_t *this)
1247 {
1248 return this->ike_sa_id;
1249 }
1250
1251 METHOD(ike_sa_t, get_version, ike_version_t,
1252 private_ike_sa_t *this)
1253 {
1254 return this->version;
1255 }
1256
1257 METHOD(ike_sa_t, get_my_id, identification_t*,
1258 private_ike_sa_t *this)
1259 {
1260 return this->my_id;
1261 }
1262
1263 METHOD(ike_sa_t, set_my_id, void,
1264 private_ike_sa_t *this, identification_t *me)
1265 {
1266 DESTROY_IF(this->my_id);
1267 this->my_id = me;
1268 }
1269
1270 METHOD(ike_sa_t, get_other_id, identification_t*,
1271 private_ike_sa_t *this)
1272 {
1273 return this->other_id;
1274 }
1275
1276 METHOD(ike_sa_t, get_other_eap_id, identification_t*,
1277 private_ike_sa_t *this)
1278 {
1279 identification_t *id = NULL, *current;
1280 enumerator_t *enumerator;
1281 auth_cfg_t *cfg;
1282
1283 enumerator = this->other_auths->create_enumerator(this->other_auths);
1284 while (enumerator->enumerate(enumerator, &cfg))
1285 {
1286 /* prefer EAP-Identity of last round */
1287 current = cfg->get(cfg, AUTH_RULE_EAP_IDENTITY);
1288 if (!current || current->get_type(current) == ID_ANY)
1289 {
1290 current = cfg->get(cfg, AUTH_RULE_XAUTH_IDENTITY);
1291 }
1292 if (!current || current->get_type(current) == ID_ANY)
1293 {
1294 current = cfg->get(cfg, AUTH_RULE_IDENTITY);
1295 }
1296 if (current && current->get_type(current) != ID_ANY)
1297 {
1298 id = current;
1299 continue;
1300 }
1301 }
1302 enumerator->destroy(enumerator);
1303 if (id)
1304 {
1305 return id;
1306 }
1307 return this->other_id;
1308 }
1309
1310 METHOD(ike_sa_t, set_other_id, void,
1311 private_ike_sa_t *this, identification_t *other)
1312 {
1313 DESTROY_IF(this->other_id);
1314 this->other_id = other;
1315 }
1316
1317 METHOD(ike_sa_t, add_child_sa, void,
1318 private_ike_sa_t *this, child_sa_t *child_sa)
1319 {
1320 this->child_sas->insert_last(this->child_sas, child_sa);
1321 }
1322
1323 METHOD(ike_sa_t, get_child_sa, child_sa_t*,
1324 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool inbound)
1325 {
1326 enumerator_t *enumerator;
1327 child_sa_t *current, *found = NULL;
1328
1329 enumerator = this->child_sas->create_enumerator(this->child_sas);
1330 while (enumerator->enumerate(enumerator, (void**)&current))
1331 {
1332 if (current->get_spi(current, inbound) == spi &&
1333 current->get_protocol(current) == protocol)
1334 {
1335 found = current;
1336 }
1337 }
1338 enumerator->destroy(enumerator);
1339 return found;
1340 }
1341
1342 METHOD(ike_sa_t, get_child_count, int,
1343 private_ike_sa_t *this)
1344 {
1345 return this->child_sas->get_count(this->child_sas);
1346 }
1347
1348 METHOD(ike_sa_t, create_child_sa_enumerator, enumerator_t*,
1349 private_ike_sa_t *this)
1350 {
1351 return this->child_sas->create_enumerator(this->child_sas);
1352 }
1353
1354 METHOD(ike_sa_t, remove_child_sa, void,
1355 private_ike_sa_t *this, enumerator_t *enumerator)
1356 {
1357 this->child_sas->remove_at(this->child_sas, enumerator);
1358 }
1359
1360 METHOD(ike_sa_t, rekey_child_sa, status_t,
1361 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1362 {
1363 if (this->state == IKE_PASSIVE)
1364 {
1365 return INVALID_STATE;
1366 }
1367 this->task_manager->queue_child_rekey(this->task_manager, protocol, spi);
1368 return this->task_manager->initiate(this->task_manager);
1369 }
1370
1371 METHOD(ike_sa_t, delete_child_sa, status_t,
1372 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool expired)
1373 {
1374 if (this->state == IKE_PASSIVE)
1375 {
1376 return INVALID_STATE;
1377 }
1378 this->task_manager->queue_child_delete(this->task_manager,
1379 protocol, spi, expired);
1380 return this->task_manager->initiate(this->task_manager);
1381 }
1382
1383 METHOD(ike_sa_t, destroy_child_sa, status_t,
1384 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1385 {
1386 enumerator_t *enumerator;
1387 child_sa_t *child_sa;
1388 status_t status = NOT_FOUND;
1389
1390 enumerator = this->child_sas->create_enumerator(this->child_sas);
1391 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1392 {
1393 if (child_sa->get_protocol(child_sa) == protocol &&
1394 child_sa->get_spi(child_sa, TRUE) == spi)
1395 {
1396 this->child_sas->remove_at(this->child_sas, enumerator);
1397 child_sa->destroy(child_sa);
1398 status = SUCCESS;
1399 break;
1400 }
1401 }
1402 enumerator->destroy(enumerator);
1403 return status;
1404 }
1405
1406 METHOD(ike_sa_t, delete_, status_t,
1407 private_ike_sa_t *this)
1408 {
1409 switch (this->state)
1410 {
1411 case IKE_REKEYING:
1412 if (this->version == IKEV1)
1413 { /* SA has been reauthenticated, delete */
1414 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1415 break;
1416 }
1417 /* FALL */
1418 case IKE_ESTABLISHED:
1419 this->task_manager->queue_ike_delete(this->task_manager);
1420 return this->task_manager->initiate(this->task_manager);
1421 case IKE_CREATED:
1422 DBG1(DBG_IKE, "deleting unestablished IKE_SA");
1423 break;
1424 case IKE_PASSIVE:
1425 break;
1426 default:
1427 DBG1(DBG_IKE, "destroying IKE_SA in state %N "
1428 "without notification", ike_sa_state_names, this->state);
1429 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1430 break;
1431 }
1432 return DESTROY_ME;
1433 }
1434
1435 METHOD(ike_sa_t, rekey, status_t,
1436 private_ike_sa_t *this)
1437 {
1438 if (this->state == IKE_PASSIVE)
1439 {
1440 return INVALID_STATE;
1441 }
1442 this->task_manager->queue_ike_rekey(this->task_manager);
1443 return this->task_manager->initiate(this->task_manager);
1444 }
1445
1446 METHOD(ike_sa_t, reauth, status_t,
1447 private_ike_sa_t *this)
1448 {
1449 if (this->state == IKE_PASSIVE)
1450 {
1451 return INVALID_STATE;
1452 }
1453 /* we can't reauthenticate as responder when we use EAP or virtual IPs.
1454 * If the peer does not support RFC4478, there is no way to keep the
1455 * IKE_SA up. */
1456 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1457 {
1458 DBG1(DBG_IKE, "initiator did not reauthenticate as requested");
1459 if (this->other_virtual_ip != NULL ||
1460 has_condition(this, COND_XAUTH_AUTHENTICATED) ||
1461 has_condition(this, COND_EAP_AUTHENTICATED)
1462 #ifdef ME
1463 /* as mediation server we too cannot reauth the IKE_SA */
1464 || this->is_mediation_server
1465 #endif /* ME */
1466 )
1467 {
1468 time_t del, now;
1469
1470 del = this->stats[STAT_DELETE];
1471 now = time_monotonic(NULL);
1472 DBG1(DBG_IKE, "IKE_SA %s[%d] will timeout in %V",
1473 get_name(this), this->unique_id, &now, &del);
1474 return FAILED;
1475 }
1476 else
1477 {
1478 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d] actively",
1479 get_name(this), this->unique_id);
1480 }
1481 }
1482 else
1483 {
1484 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d]",
1485 get_name(this), this->unique_id);
1486 }
1487 this->is_reauthenticating = TRUE;
1488 this->task_manager->queue_ike_reauth(this->task_manager);
1489 return this->task_manager->initiate(this->task_manager);
1490 }
1491
1492 METHOD(ike_sa_t, reestablish, status_t,
1493 private_ike_sa_t *this)
1494 {
1495 ike_sa_t *new;
1496 host_t *host;
1497 action_t action;
1498 enumerator_t *enumerator;
1499 child_sa_t *child_sa;
1500 child_cfg_t *child_cfg;
1501 bool restart = FALSE;
1502 status_t status = FAILED;
1503
1504 if (this->is_reauthenticating)
1505 { /* only reauthenticate if we have children */
1506 if (this->child_sas->get_count(this->child_sas) == 0
1507 #ifdef ME
1508 /* allow reauth of mediation connections without CHILD_SAs */
1509 && !this->peer_cfg->is_mediation(this->peer_cfg)
1510 #endif /* ME */
1511 )
1512 {
1513 DBG1(DBG_IKE, "unable to reauthenticate IKE_SA, no CHILD_SA "
1514 "to recreate");
1515 }
1516 else
1517 {
1518 restart = TRUE;
1519 }
1520 }
1521 else
1522 { /* check if we have children to keep up at all */
1523 enumerator = this->child_sas->create_enumerator(this->child_sas);
1524 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1525 {
1526 if (this->state == IKE_DELETING)
1527 {
1528 action = child_sa->get_close_action(child_sa);
1529 }
1530 else
1531 {
1532 action = child_sa->get_dpd_action(child_sa);
1533 }
1534 switch (action)
1535 {
1536 case ACTION_RESTART:
1537 restart = TRUE;
1538 break;
1539 case ACTION_ROUTE:
1540 charon->traps->install(charon->traps, this->peer_cfg,
1541 child_sa->get_config(child_sa));
1542 break;
1543 default:
1544 break;
1545 }
1546 }
1547 enumerator->destroy(enumerator);
1548 #ifdef ME
1549 /* mediation connections have no children, keep them up anyway */
1550 if (this->peer_cfg->is_mediation(this->peer_cfg))
1551 {
1552 restart = TRUE;
1553 }
1554 #endif /* ME */
1555 }
1556 if (!restart)
1557 {
1558 return FAILED;
1559 }
1560
1561 /* check if we are able to reestablish this IKE_SA */
1562 if (!has_condition(this, COND_ORIGINAL_INITIATOR) &&
1563 (this->other_virtual_ip != NULL ||
1564 has_condition(this, COND_EAP_AUTHENTICATED)
1565 #ifdef ME
1566 || this->is_mediation_server
1567 #endif /* ME */
1568 ))
1569 {
1570 DBG1(DBG_IKE, "unable to reestablish IKE_SA due to asymmetric setup");
1571 return FAILED;
1572 }
1573
1574 new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager,
1575 this->version, TRUE);
1576 if (!new)
1577 {
1578 return FAILED;
1579 }
1580 new->set_peer_cfg(new, this->peer_cfg);
1581 host = this->other_host;
1582 new->set_other_host(new, host->clone(host));
1583 host = this->my_host;
1584 new->set_my_host(new, host->clone(host));
1585 /* if we already have a virtual IP, we reuse it */
1586 host = this->my_virtual_ip;
1587 if (host)
1588 {
1589 new->set_virtual_ip(new, TRUE, host);
1590 }
1591
1592 #ifdef ME
1593 if (this->peer_cfg->is_mediation(this->peer_cfg))
1594 {
1595 status = new->initiate(new, NULL, 0, NULL, NULL);
1596 }
1597 else
1598 #endif /* ME */
1599 {
1600 enumerator = this->child_sas->create_enumerator(this->child_sas);
1601 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1602 {
1603 if (this->is_reauthenticating)
1604 {
1605 switch (child_sa->get_state(child_sa))
1606 {
1607 case CHILD_ROUTED:
1608 { /* move routed child directly */
1609 this->child_sas->remove_at(this->child_sas, enumerator);
1610 new->add_child_sa(new, child_sa);
1611 action = ACTION_NONE;
1612 break;
1613 }
1614 default:
1615 { /* initiate/queue all other CHILD_SAs */
1616 action = ACTION_RESTART;
1617 break;
1618 }
1619 }
1620 }
1621 else
1622 { /* only restart CHILD_SAs that are configured accordingly */
1623 if (this->state == IKE_DELETING)
1624 {
1625 action = child_sa->get_close_action(child_sa);
1626 }
1627 else
1628 {
1629 action = child_sa->get_dpd_action(child_sa);
1630 }
1631 }
1632 switch (action)
1633 {
1634 case ACTION_RESTART:
1635 child_cfg = child_sa->get_config(child_sa);
1636 DBG1(DBG_IKE, "restarting CHILD_SA %s",
1637 child_cfg->get_name(child_cfg));
1638 child_cfg->get_ref(child_cfg);
1639 status = new->initiate(new, child_cfg, 0, NULL, NULL);
1640 break;
1641 default:
1642 continue;
1643 }
1644 if (status == DESTROY_ME)
1645 {
1646 break;
1647 }
1648 }
1649 enumerator->destroy(enumerator);
1650 }
1651
1652 if (status == DESTROY_ME)
1653 {
1654 charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, new);
1655 status = FAILED;
1656 }
1657 else
1658 {
1659 charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
1660 status = SUCCESS;
1661 }
1662 charon->bus->set_sa(charon->bus, &this->public);
1663 return status;
1664 }
1665
1666 METHOD(ike_sa_t, retransmit, status_t,
1667 private_ike_sa_t *this, u_int32_t message_id)
1668 {
1669 if (this->state == IKE_PASSIVE)
1670 {
1671 return INVALID_STATE;
1672 }
1673 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
1674 if (this->task_manager->retransmit(this->task_manager, message_id) != SUCCESS)
1675 {
1676 /* send a proper signal to brief interested bus listeners */
1677 switch (this->state)
1678 {
1679 case IKE_CONNECTING:
1680 {
1681 /* retry IKE_SA_INIT/Main Mode if we have multiple keyingtries */
1682 u_int32_t tries = this->peer_cfg->get_keyingtries(this->peer_cfg);
1683 this->keyingtry++;
1684 if (tries == 0 || tries > this->keyingtry)
1685 {
1686 DBG1(DBG_IKE, "peer not responding, trying again (%d/%d)",
1687 this->keyingtry + 1, tries);
1688 reset(this);
1689 resolve_hosts(this);
1690 this->task_manager->queue_ike(this->task_manager);
1691 return this->task_manager->initiate(this->task_manager);
1692 }
1693 DBG1(DBG_IKE, "establishing IKE_SA failed, peer not responding");
1694 break;
1695 }
1696 case IKE_DELETING:
1697 DBG1(DBG_IKE, "proper IKE_SA delete failed, peer not responding");
1698 if (this->is_reauthenticating)
1699 {
1700 DBG1(DBG_IKE, "delete during reauthentication failed, "
1701 "trying to reestablish IKE_SA anyway");
1702 reestablish(this);
1703 }
1704 break;
1705 case IKE_REKEYING:
1706 DBG1(DBG_IKE, "rekeying IKE_SA failed, peer not responding");
1707 /* FALL */
1708 default:
1709 reestablish(this);
1710 break;
1711 }
1712 return DESTROY_ME;
1713 }
1714 return SUCCESS;
1715 }
1716
1717 METHOD(ike_sa_t, set_auth_lifetime, status_t,
1718 private_ike_sa_t *this, u_int32_t lifetime)
1719 {
1720 u_int32_t diff, hard, soft, now;
1721 ike_auth_lifetime_t *task;
1722 bool send_update;
1723
1724 diff = this->peer_cfg->get_over_time(this->peer_cfg);
1725 now = time_monotonic(NULL);
1726 hard = now + lifetime;
1727 soft = hard - diff;
1728
1729 /* check if we have to send an AUTH_LIFETIME to enforce the new lifetime.
1730 * We send the notify in IKE_AUTH if not yet ESTABLISHED. */
1731 send_update = this->state == IKE_ESTABLISHED && this->version == IKEV2 &&
1732 !has_condition(this, COND_ORIGINAL_INITIATOR) &&
1733 (this->other_virtual_ip != NULL ||
1734 has_condition(this, COND_EAP_AUTHENTICATED));
1735
1736 if (lifetime < diff)
1737 {
1738 this->stats[STAT_REAUTH] = now;
1739
1740 if (!send_update)
1741 {
1742 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1743 "starting reauthentication", lifetime);
1744 lib->processor->queue_job(lib->processor,
1745 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE));
1746 }
1747 }
1748 else if (this->stats[STAT_REAUTH] == 0 ||
1749 this->stats[STAT_REAUTH] > soft)
1750 {
1751 this->stats[STAT_REAUTH] = soft;
1752 if (!send_update)
1753 {
1754 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, scheduling "
1755 "reauthentication in %ds", lifetime, lifetime - diff);
1756 lib->scheduler->schedule_job(lib->scheduler,
1757 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE),
1758 lifetime - diff);
1759 }
1760 }
1761 else
1762 {
1763 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1764 "reauthentication already scheduled in %ds", lifetime,
1765 this->stats[STAT_REAUTH] - time_monotonic(NULL));
1766 send_update = FALSE;
1767 }
1768 /* give at least some seconds to reauthenticate */
1769 this->stats[STAT_DELETE] = max(hard, now + 10);
1770
1771 if (send_update)
1772 {
1773 task = ike_auth_lifetime_create(&this->public, TRUE);
1774 this->task_manager->queue_task(this->task_manager, &task->task);
1775 return this->task_manager->initiate(this->task_manager);
1776 }
1777 return SUCCESS;
1778 }
1779
1780 /**
1781 * Check if the current combination of source and destination address is still
1782 * valid.
1783 */
1784 static bool is_current_path_valid(private_ike_sa_t *this)
1785 {
1786 bool valid = FALSE;
1787 host_t *src;
1788 src = hydra->kernel_interface->get_source_addr(hydra->kernel_interface,
1789 this->other_host, this->my_host);
1790 if (src)
1791 {
1792 if (src->ip_equals(src, this->my_host))
1793 {
1794 valid = TRUE;
1795 }
1796 src->destroy(src);
1797 }
1798 return valid;
1799 }
1800
1801 /**
1802 * Check if we have any path avialable for this IKE SA.
1803 */
1804 static bool is_any_path_valid(private_ike_sa_t *this)
1805 {
1806 bool valid = FALSE;
1807 enumerator_t *enumerator;
1808 host_t *src = NULL, *addr;
1809
1810 DBG1(DBG_IKE, "old path is not available anymore, try to find another");
1811 enumerator = create_peer_address_enumerator(this);
1812 while (enumerator->enumerate(enumerator, &addr))
1813 {
1814 DBG1(DBG_IKE, "looking for a route to %H ...", addr);
1815 src = hydra->kernel_interface->get_source_addr(
1816 hydra->kernel_interface, addr, NULL);
1817 if (src)
1818 {
1819 break;
1820 }
1821 }
1822 enumerator->destroy(enumerator);
1823 if (src)
1824 {
1825 valid = TRUE;
1826 src->destroy(src);
1827 }
1828 return valid;
1829 }
1830
1831 METHOD(ike_sa_t, roam, status_t,
1832 private_ike_sa_t *this, bool address)
1833 {
1834 switch (this->state)
1835 {
1836 case IKE_CREATED:
1837 case IKE_DELETING:
1838 case IKE_DESTROYING:
1839 case IKE_PASSIVE:
1840 return SUCCESS;
1841 default:
1842 break;
1843 }
1844
1845 /* keep existing path if possible */
1846 if (is_current_path_valid(this))
1847 {
1848 DBG2(DBG_IKE, "keeping connection path %H - %H",
1849 this->my_host, this->other_host);
1850 set_condition(this, COND_STALE, FALSE);
1851
1852 if (supports_extension(this, EXT_MOBIKE) && address)
1853 { /* if any addresses changed, send an updated list */
1854 DBG1(DBG_IKE, "sending address list update using MOBIKE");
1855 this->task_manager->queue_mobike(this->task_manager, FALSE, TRUE);
1856 return this->task_manager->initiate(this->task_manager);
1857 }
1858 return SUCCESS;
1859 }
1860
1861 if (!is_any_path_valid(this))
1862 {
1863 DBG1(DBG_IKE, "no route found to reach %H, MOBIKE update deferred",
1864 this->other_host);
1865 set_condition(this, COND_STALE, TRUE);
1866 return SUCCESS;
1867 }
1868 set_condition(this, COND_STALE, FALSE);
1869
1870 /* update addresses with mobike, if supported ... */
1871 if (supports_extension(this, EXT_MOBIKE))
1872 {
1873 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1874 { /* responder updates the peer about changed address config */
1875 DBG1(DBG_IKE, "sending address list update using MOBIKE, "
1876 "implicitly requesting an address change");
1877 address = TRUE;
1878 }
1879 else
1880 {
1881 DBG1(DBG_IKE, "requesting address change using MOBIKE");
1882 }
1883 this->task_manager->queue_mobike(this->task_manager, TRUE, address);
1884 return this->task_manager->initiate(this->task_manager);
1885 }
1886
1887 /* ... reauth if not */
1888 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1889 { /* responder does not reauthenticate */
1890 set_condition(this, COND_STALE, TRUE);
1891 return SUCCESS;
1892 }
1893 DBG1(DBG_IKE, "reauthenticating IKE_SA due to address change");
1894 /* since our previous path is not valid anymore, try and find a new one */
1895 resolve_hosts(this);
1896 return reauth(this);
1897 }
1898
1899 METHOD(ike_sa_t, add_configuration_attribute, void,
1900 private_ike_sa_t *this, attribute_handler_t *handler,
1901 configuration_attribute_type_t type, chunk_t data)
1902 {
1903 attribute_entry_t *entry = malloc_thing(attribute_entry_t);
1904
1905 entry->handler = handler;
1906 entry->type = type;
1907 entry->data = chunk_clone(data);
1908
1909 this->attributes->insert_last(this->attributes, entry);
1910 }
1911
1912 METHOD(ike_sa_t, create_task_enumerator, enumerator_t*,
1913 private_ike_sa_t *this, task_queue_t queue)
1914 {
1915 return this->task_manager->create_task_enumerator(this->task_manager, queue);
1916 }
1917
1918 METHOD(ike_sa_t, flush_queue, void,
1919 private_ike_sa_t *this, task_queue_t queue)
1920 {
1921 this->task_manager->flush_queue(this->task_manager, queue);
1922 }
1923
1924 METHOD(ike_sa_t, queue_task, void,
1925 private_ike_sa_t *this, task_t *task)
1926 {
1927 this->task_manager->queue_task(this->task_manager, task);
1928 }
1929
1930 METHOD(ike_sa_t, inherit, void,
1931 private_ike_sa_t *this, ike_sa_t *other_public)
1932 {
1933 private_ike_sa_t *other = (private_ike_sa_t*)other_public;
1934 child_sa_t *child_sa;
1935 attribute_entry_t *entry;
1936 enumerator_t *enumerator;
1937 auth_cfg_t *cfg;
1938
1939 /* apply hosts and ids */
1940 this->my_host->destroy(this->my_host);
1941 this->other_host->destroy(this->other_host);
1942 this->my_id->destroy(this->my_id);
1943 this->other_id->destroy(this->other_id);
1944 this->my_host = other->my_host->clone(other->my_host);
1945 this->other_host = other->other_host->clone(other->other_host);
1946 this->my_id = other->my_id->clone(other->my_id);
1947 this->other_id = other->other_id->clone(other->other_id);
1948
1949 /* apply virtual assigned IPs... */
1950 if (other->my_virtual_ip)
1951 {
1952 this->my_virtual_ip = other->my_virtual_ip;
1953 other->my_virtual_ip = NULL;
1954 }
1955 if (other->other_virtual_ip)
1956 {
1957 this->other_virtual_ip = other->other_virtual_ip;
1958 other->other_virtual_ip = NULL;
1959 }
1960
1961 /* authentication information */
1962 enumerator = other->my_auths->create_enumerator(other->my_auths);
1963 while (enumerator->enumerate(enumerator, &cfg))
1964 {
1965 this->my_auths->insert_last(this->my_auths, cfg->clone(cfg));
1966 }
1967 enumerator->destroy(enumerator);
1968 enumerator = other->other_auths->create_enumerator(other->other_auths);
1969 while (enumerator->enumerate(enumerator, &cfg))
1970 {
1971 this->other_auths->insert_last(this->other_auths, cfg->clone(cfg));
1972 }
1973 enumerator->destroy(enumerator);
1974
1975 /* ... and configuration attributes */
1976 while (other->attributes->remove_last(other->attributes,
1977 (void**)&entry) == SUCCESS)
1978 {
1979 this->attributes->insert_first(this->attributes, entry);
1980 }
1981
1982 /* inherit all conditions */
1983 this->conditions = other->conditions;
1984 if (this->conditions & COND_NAT_HERE)
1985 {
1986 send_keepalive(this);
1987 }
1988
1989 #ifdef ME
1990 if (other->is_mediation_server)
1991 {
1992 act_as_mediation_server(this);
1993 }
1994 else if (other->server_reflexive_host)
1995 {
1996 this->server_reflexive_host = other->server_reflexive_host->clone(
1997 other->server_reflexive_host);
1998 }
1999 #endif /* ME */
2000
2001 /* adopt all children */
2002 while (other->child_sas->remove_last(other->child_sas,
2003 (void**)&child_sa) == SUCCESS)
2004 {
2005 this->child_sas->insert_first(this->child_sas, (void*)child_sa);
2006 }
2007
2008 /* move pending tasks to the new IKE_SA */
2009 this->task_manager->adopt_tasks(this->task_manager, other->task_manager);
2010
2011 /* reauthentication timeout survives a rekeying */
2012 if (other->stats[STAT_REAUTH])
2013 {
2014 time_t reauth, delete, now = time_monotonic(NULL);
2015
2016 this->stats[STAT_REAUTH] = other->stats[STAT_REAUTH];
2017 reauth = this->stats[STAT_REAUTH] - now;
2018 delete = reauth + this->peer_cfg->get_over_time(this->peer_cfg);
2019 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH] + delete;
2020 DBG1(DBG_IKE, "rescheduling reauthentication in %ds after rekeying, "
2021 "lifetime reduced to %ds", reauth, delete);
2022 lib->scheduler->schedule_job(lib->scheduler,
2023 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE), reauth);
2024 lib->scheduler->schedule_job(lib->scheduler,
2025 (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE), delete);
2026 }
2027 }
2028
2029 METHOD(ike_sa_t, destroy, void,
2030 private_ike_sa_t *this)
2031 {
2032 attribute_entry_t *entry;
2033
2034 charon->bus->set_sa(charon->bus, &this->public);
2035
2036 set_state(this, IKE_DESTROYING);
2037 DESTROY_IF(this->task_manager);
2038
2039 /* remove attributes first, as we pass the IKE_SA to the handler */
2040 while (this->attributes->remove_last(this->attributes,
2041 (void**)&entry) == SUCCESS)
2042 {
2043 hydra->attributes->release(hydra->attributes, entry->handler,
2044 this->other_id, entry->type, entry->data);
2045 free(entry->data.ptr);
2046 free(entry);
2047 }
2048 this->attributes->destroy(this->attributes);
2049
2050 this->child_sas->destroy_offset(this->child_sas, offsetof(child_sa_t, destroy));
2051
2052 /* unset SA after here to avoid usage by the listeners */
2053 charon->bus->set_sa(charon->bus, NULL);
2054
2055 DESTROY_IF(this->keymat);
2056
2057 if (this->my_virtual_ip)
2058 {
2059 hydra->kernel_interface->del_ip(hydra->kernel_interface,
2060 this->my_virtual_ip);
2061 this->my_virtual_ip->destroy(this->my_virtual_ip);
2062 }
2063 if (this->other_virtual_ip)
2064 {
2065 if (this->peer_cfg && this->peer_cfg->get_pool(this->peer_cfg))
2066 {
2067 hydra->attributes->release_address(hydra->attributes,
2068 this->peer_cfg->get_pool(this->peer_cfg),
2069 this->other_virtual_ip, get_other_eap_id(this));
2070 }
2071 this->other_virtual_ip->destroy(this->other_virtual_ip);
2072 }
2073 this->peer_addresses->destroy_offset(this->peer_addresses,
2074 offsetof(host_t, destroy));
2075 #ifdef ME
2076 if (this->is_mediation_server)
2077 {
2078 charon->mediation_manager->remove(charon->mediation_manager,
2079 this->ike_sa_id);
2080 }
2081 DESTROY_IF(this->server_reflexive_host);
2082 chunk_free(&this->connect_id);
2083 #endif /* ME */
2084 free(this->nat_detection_dest.ptr);
2085
2086 DESTROY_IF(this->my_host);
2087 DESTROY_IF(this->other_host);
2088 DESTROY_IF(this->my_id);
2089 DESTROY_IF(this->other_id);
2090 DESTROY_IF(this->local_host);
2091 DESTROY_IF(this->remote_host);
2092
2093 DESTROY_IF(this->ike_cfg);
2094 DESTROY_IF(this->peer_cfg);
2095 DESTROY_IF(this->proposal);
2096 this->my_auth->destroy(this->my_auth);
2097 this->other_auth->destroy(this->other_auth);
2098 this->my_auths->destroy_offset(this->my_auths,
2099 offsetof(auth_cfg_t, destroy));
2100 this->other_auths->destroy_offset(this->other_auths,
2101 offsetof(auth_cfg_t, destroy));
2102
2103 this->ike_sa_id->destroy(this->ike_sa_id);
2104 free(this);
2105 }
2106
2107 /*
2108 * Described in header.
2109 */
2110 ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id, bool initiator,
2111 ike_version_t version)
2112 {
2113 private_ike_sa_t *this;
2114 static u_int32_t unique_id = 0;
2115
2116 if (version == IKE_ANY)
2117 { /* prefer IKEv2 if protocol not specified */
2118 #ifdef USE_IKEV2
2119 version = IKEV2;
2120 #else
2121 version = IKEV1;
2122 #endif
2123 }
2124
2125 INIT(this,
2126 .public = {
2127 .get_version = _get_version,
2128 .get_state = _get_state,
2129 .set_state = _set_state,
2130 .get_name = _get_name,
2131 .get_statistic = _get_statistic,
2132 .set_statistic = _set_statistic,
2133 .process_message = _process_message,
2134 .initiate = _initiate,
2135 .retry_initiate = _retry_initiate,
2136 .get_ike_cfg = _get_ike_cfg,
2137 .set_ike_cfg = _set_ike_cfg,
2138 .get_peer_cfg = _get_peer_cfg,
2139 .set_peer_cfg = _set_peer_cfg,
2140 .get_auth_cfg = _get_auth_cfg,
2141 .create_auth_cfg_enumerator = _create_auth_cfg_enumerator,
2142 .add_auth_cfg = _add_auth_cfg,
2143 .get_proposal = _get_proposal,
2144 .set_proposal = _set_proposal,
2145 .get_id = _get_id,
2146 .get_my_host = _get_my_host,
2147 .set_my_host = _set_my_host,
2148 .get_other_host = _get_other_host,
2149 .set_other_host = _set_other_host,
2150 .set_message_id = _set_message_id,
2151 .float_ports = _float_ports,
2152 .update_hosts = _update_hosts,
2153 .get_my_id = _get_my_id,
2154 .set_my_id = _set_my_id,
2155 .get_other_id = _get_other_id,
2156 .set_other_id = _set_other_id,
2157 .get_other_eap_id = _get_other_eap_id,
2158 .enable_extension = _enable_extension,
2159 .supports_extension = _supports_extension,
2160 .set_condition = _set_condition,
2161 .has_condition = _has_condition,
2162 .set_pending_updates = _set_pending_updates,
2163 .get_pending_updates = _get_pending_updates,
2164 .create_peer_address_enumerator = _create_peer_address_enumerator,
2165 .add_peer_address = _add_peer_address,
2166 .clear_peer_addresses = _clear_peer_addresses,
2167 .has_mapping_changed = _has_mapping_changed,
2168 .retransmit = _retransmit,
2169 .delete = _delete_,
2170 .destroy = _destroy,
2171 .send_dpd = _send_dpd,
2172 .send_keepalive = _send_keepalive,
2173 .get_keymat = _get_keymat,
2174 .add_child_sa = _add_child_sa,
2175 .get_child_sa = _get_child_sa,
2176 .get_child_count = _get_child_count,
2177 .create_child_sa_enumerator = _create_child_sa_enumerator,
2178 .remove_child_sa = _remove_child_sa,
2179 .rekey_child_sa = _rekey_child_sa,
2180 .delete_child_sa = _delete_child_sa,
2181 .destroy_child_sa = _destroy_child_sa,
2182 .rekey = _rekey,
2183 .reauth = _reauth,
2184 .reestablish = _reestablish,
2185 .set_auth_lifetime = _set_auth_lifetime,
2186 .roam = _roam,
2187 .inherit = _inherit,
2188 .generate_message = _generate_message,
2189 .reset = _reset,
2190 .get_unique_id = _get_unique_id,
2191 .set_virtual_ip = _set_virtual_ip,
2192 .get_virtual_ip = _get_virtual_ip,
2193 .add_configuration_attribute = _add_configuration_attribute,
2194 .set_kmaddress = _set_kmaddress,
2195 .create_task_enumerator = _create_task_enumerator,
2196 .flush_queue = _flush_queue,
2197 .queue_task = _queue_task,
2198 #ifdef ME
2199 .act_as_mediation_server = _act_as_mediation_server,
2200 .get_server_reflexive_host = _get_server_reflexive_host,
2201 .set_server_reflexive_host = _set_server_reflexive_host,
2202 .get_connect_id = _get_connect_id,
2203 .initiate_mediation = _initiate_mediation,
2204 .initiate_mediated = _initiate_mediated,
2205 .relay = _relay,
2206 .callback = _callback,
2207 .respond = _respond,
2208 #endif /* ME */
2209 },
2210 .ike_sa_id = ike_sa_id->clone(ike_sa_id),
2211 .version = version,
2212 .child_sas = linked_list_create(),
2213 .my_host = host_create_any(AF_INET),
2214 .other_host = host_create_any(AF_INET),
2215 .my_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2216 .other_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2217 .keymat = keymat_create(version, initiator),
2218 .state = IKE_CREATED,
2219 .stats[STAT_INBOUND] = time_monotonic(NULL),
2220 .stats[STAT_OUTBOUND] = time_monotonic(NULL),
2221 .my_auth = auth_cfg_create(),
2222 .other_auth = auth_cfg_create(),
2223 .my_auths = linked_list_create(),
2224 .other_auths = linked_list_create(),
2225 .unique_id = ++unique_id,
2226 .peer_addresses = linked_list_create(),
2227 .attributes = linked_list_create(),
2228 .keepalive_interval = lib->settings->get_time(lib->settings,
2229 "%s.keep_alive", KEEPALIVE_INTERVAL, charon->name),
2230 .retry_initiate_interval = lib->settings->get_time(lib->settings,
2231 "%s.retry_initiate_interval", 0, charon->name),
2232 .flush_auth_cfg = lib->settings->get_bool(lib->settings,
2233 "%s.flush_auth_cfg", FALSE, charon->name),
2234 );
2235
2236 if (version == IKEV2)
2237 { /* always supported with IKEv2 */
2238 enable_extension(this, EXT_DPD);
2239 }
2240
2241 this->task_manager = task_manager_create(&this->public);
2242 this->my_host->set_port(this->my_host, CHARON_UDP_PORT);
2243
2244 if (!this->task_manager || !this->keymat)
2245 {
2246 DBG1(DBG_IKE, "IKE version %d not supported", this->version);
2247 destroy(this);
2248 return NULL;
2249 }
2250 return &this->public;
2251 }