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Without MOBIKE, update remote host only if it is behind NAT
[strongswan.git] / src / libcharon / sa / ike_sa.c
1 /*
2 * Copyright (C) 2006-2012 Tobias Brunner
3 * Copyright (C) 2006 Daniel Roethlisberger
4 * Copyright (C) 2005-2009 Martin Willi
5 * Copyright (C) 2005 Jan Hutter
6 * Hochschule fuer Technik Rapperswil
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 * for more details.
17 */
18
19 #include <string.h>
20 #include <sys/stat.h>
21 #include <errno.h>
22 #include <time.h>
23
24 #include "ike_sa.h"
25
26 #include <library.h>
27 #include <hydra.h>
28 #include <daemon.h>
29 #include <collections/linked_list.h>
30 #include <utils/lexparser.h>
31 #include <processing/jobs/retransmit_job.h>
32 #include <processing/jobs/delete_ike_sa_job.h>
33 #include <processing/jobs/send_dpd_job.h>
34 #include <processing/jobs/send_keepalive_job.h>
35 #include <processing/jobs/rekey_ike_sa_job.h>
36 #include <processing/jobs/retry_initiate_job.h>
37 #include <sa/ikev2/tasks/ike_auth_lifetime.h>
38
39 #ifdef ME
40 #include <sa/ikev2/tasks/ike_me.h>
41 #include <processing/jobs/initiate_mediation_job.h>
42 #endif
43
44 ENUM(ike_sa_state_names, IKE_CREATED, IKE_DESTROYING,
45 "CREATED",
46 "CONNECTING",
47 "ESTABLISHED",
48 "PASSIVE",
49 "REKEYING",
50 "DELETING",
51 "DESTROYING",
52 );
53
54 typedef struct private_ike_sa_t private_ike_sa_t;
55 typedef struct attribute_entry_t attribute_entry_t;
56
57 /**
58 * Private data of an ike_sa_t object.
59 */
60 struct private_ike_sa_t {
61
62 /**
63 * Public members
64 */
65 ike_sa_t public;
66
67 /**
68 * Identifier for the current IKE_SA.
69 */
70 ike_sa_id_t *ike_sa_id;
71
72 /**
73 * IKE version of this SA.
74 */
75 ike_version_t version;
76
77 /**
78 * unique numerical ID for this IKE_SA.
79 */
80 u_int32_t unique_id;
81
82 /**
83 * Current state of the IKE_SA
84 */
85 ike_sa_state_t state;
86
87 /**
88 * IKE configuration used to set up this IKE_SA
89 */
90 ike_cfg_t *ike_cfg;
91
92 /**
93 * Peer and authentication information to establish IKE_SA.
94 */
95 peer_cfg_t *peer_cfg;
96
97 /**
98 * currently used authentication ruleset, local (as auth_cfg_t)
99 */
100 auth_cfg_t *my_auth;
101
102 /**
103 * list of completed local authentication rounds
104 */
105 linked_list_t *my_auths;
106
107 /**
108 * list of completed remote authentication rounds
109 */
110 linked_list_t *other_auths;
111
112 /**
113 * currently used authentication constraints, remote (as auth_cfg_t)
114 */
115 auth_cfg_t *other_auth;
116
117 /**
118 * Selected IKE proposal
119 */
120 proposal_t *proposal;
121
122 /**
123 * Juggles tasks to process messages
124 */
125 task_manager_t *task_manager;
126
127 /**
128 * Address of local host
129 */
130 host_t *my_host;
131
132 /**
133 * Address of remote host
134 */
135 host_t *other_host;
136
137 #ifdef ME
138 /**
139 * Are we mediation server
140 */
141 bool is_mediation_server;
142
143 /**
144 * Server reflexive host
145 */
146 host_t *server_reflexive_host;
147
148 /**
149 * Connect ID
150 */
151 chunk_t connect_id;
152 #endif /* ME */
153
154 /**
155 * Identification used for us
156 */
157 identification_t *my_id;
158
159 /**
160 * Identification used for other
161 */
162 identification_t *other_id;
163
164 /**
165 * set of extensions the peer supports
166 */
167 ike_extension_t extensions;
168
169 /**
170 * set of condition flags currently enabled for this IKE_SA
171 */
172 ike_condition_t conditions;
173
174 /**
175 * Linked List containing the child sa's of the current IKE_SA.
176 */
177 linked_list_t *child_sas;
178
179 /**
180 * keymat of this IKE_SA
181 */
182 keymat_t *keymat;
183
184 /**
185 * Virtual IPs on local host
186 */
187 linked_list_t *my_vips;
188
189 /**
190 * Virtual IPs on remote host
191 */
192 linked_list_t *other_vips;
193
194 /**
195 * List of configuration attributes (attribute_entry_t)
196 */
197 linked_list_t *attributes;
198
199 /**
200 * list of peer's addresses, additional ones transmitted via MOBIKE
201 */
202 linked_list_t *peer_addresses;
203
204 /**
205 * previously value of received DESTINATION_IP hash
206 */
207 chunk_t nat_detection_dest;
208
209 /**
210 * number pending UPDATE_SA_ADDRESS (MOBIKE)
211 */
212 u_int32_t pending_updates;
213
214 /**
215 * NAT keep alive interval
216 */
217 u_int32_t keepalive_interval;
218
219 /**
220 * interval for retries during initiation (e.g. if DNS resolution failed),
221 * 0 to disable (default)
222 */
223 u_int32_t retry_initiate_interval;
224
225 /**
226 * TRUE if a retry_initiate_job has been queued
227 */
228 bool retry_initiate_queued;
229
230 /**
231 * Timestamps for this IKE_SA
232 */
233 u_int32_t stats[STAT_MAX];
234
235 /**
236 * how many times we have retried so far (keyingtries)
237 */
238 u_int32_t keyingtry;
239
240 /**
241 * local host address to be used for IKE, set via MIGRATE kernel message
242 */
243 host_t *local_host;
244
245 /**
246 * remote host address to be used for IKE, set via MIGRATE kernel message
247 */
248 host_t *remote_host;
249
250 /**
251 * Flush auth configs once established?
252 */
253 bool flush_auth_cfg;
254 };
255
256 /**
257 * Entry to maintain install configuration attributes during IKE_SA lifetime
258 */
259 struct attribute_entry_t {
260 /** handler used to install this attribute */
261 attribute_handler_t *handler;
262 /** attribute type */
263 configuration_attribute_type_t type;
264 /** attribute data */
265 chunk_t data;
266 };
267
268 /**
269 * get the time of the latest traffic processed by the kernel
270 */
271 static time_t get_use_time(private_ike_sa_t* this, bool inbound)
272 {
273 enumerator_t *enumerator;
274 child_sa_t *child_sa;
275 time_t use_time, current;
276
277 if (inbound)
278 {
279 use_time = this->stats[STAT_INBOUND];
280 }
281 else
282 {
283 use_time = this->stats[STAT_OUTBOUND];
284 }
285 enumerator = this->child_sas->create_enumerator(this->child_sas);
286 while (enumerator->enumerate(enumerator, &child_sa))
287 {
288 child_sa->get_usestats(child_sa, inbound, &current, NULL);
289 use_time = max(use_time, current);
290 }
291 enumerator->destroy(enumerator);
292
293 return use_time;
294 }
295
296 METHOD(ike_sa_t, get_unique_id, u_int32_t,
297 private_ike_sa_t *this)
298 {
299 return this->unique_id;
300 }
301
302 METHOD(ike_sa_t, get_name, char*,
303 private_ike_sa_t *this)
304 {
305 if (this->peer_cfg)
306 {
307 return this->peer_cfg->get_name(this->peer_cfg);
308 }
309 return "(unnamed)";
310 }
311
312 METHOD(ike_sa_t, get_statistic, u_int32_t,
313 private_ike_sa_t *this, statistic_t kind)
314 {
315 if (kind < STAT_MAX)
316 {
317 return this->stats[kind];
318 }
319 return 0;
320 }
321
322 METHOD(ike_sa_t, set_statistic, void,
323 private_ike_sa_t *this, statistic_t kind, u_int32_t value)
324 {
325 if (kind < STAT_MAX)
326 {
327 this->stats[kind] = value;
328 }
329 }
330
331 METHOD(ike_sa_t, get_my_host, host_t*,
332 private_ike_sa_t *this)
333 {
334 return this->my_host;
335 }
336
337 METHOD(ike_sa_t, set_my_host, void,
338 private_ike_sa_t *this, host_t *me)
339 {
340 DESTROY_IF(this->my_host);
341 this->my_host = me;
342 }
343
344 METHOD(ike_sa_t, get_other_host, host_t*,
345 private_ike_sa_t *this)
346 {
347 return this->other_host;
348 }
349
350 METHOD(ike_sa_t, set_other_host, void,
351 private_ike_sa_t *this, host_t *other)
352 {
353 DESTROY_IF(this->other_host);
354 this->other_host = other;
355 }
356
357 METHOD(ike_sa_t, get_peer_cfg, peer_cfg_t*,
358 private_ike_sa_t *this)
359 {
360 return this->peer_cfg;
361 }
362
363 METHOD(ike_sa_t, set_peer_cfg, void,
364 private_ike_sa_t *this, peer_cfg_t *peer_cfg)
365 {
366 peer_cfg->get_ref(peer_cfg);
367 DESTROY_IF(this->peer_cfg);
368 this->peer_cfg = peer_cfg;
369
370 if (this->ike_cfg == NULL)
371 {
372 this->ike_cfg = peer_cfg->get_ike_cfg(peer_cfg);
373 this->ike_cfg->get_ref(this->ike_cfg);
374 }
375 }
376
377 METHOD(ike_sa_t, get_auth_cfg, auth_cfg_t*,
378 private_ike_sa_t *this, bool local)
379 {
380 if (local)
381 {
382 return this->my_auth;
383 }
384 return this->other_auth;
385 }
386
387 METHOD(ike_sa_t, add_auth_cfg, void,
388 private_ike_sa_t *this, bool local, auth_cfg_t *cfg)
389 {
390 if (local)
391 {
392 this->my_auths->insert_last(this->my_auths, cfg);
393 }
394 else
395 {
396 this->other_auths->insert_last(this->other_auths, cfg);
397 }
398 }
399
400 METHOD(ike_sa_t, create_auth_cfg_enumerator, enumerator_t*,
401 private_ike_sa_t *this, bool local)
402 {
403 if (local)
404 {
405 return this->my_auths->create_enumerator(this->my_auths);
406 }
407 return this->other_auths->create_enumerator(this->other_auths);
408 }
409
410 /**
411 * Flush the stored authentication round information
412 */
413 static void flush_auth_cfgs(private_ike_sa_t *this)
414 {
415 auth_cfg_t *cfg;
416
417 this->my_auth->purge(this->my_auth, FALSE);
418 this->other_auth->purge(this->other_auth, FALSE);
419
420 while (this->my_auths->remove_last(this->my_auths,
421 (void**)&cfg) == SUCCESS)
422 {
423 cfg->destroy(cfg);
424 }
425 while (this->other_auths->remove_last(this->other_auths,
426 (void**)&cfg) == SUCCESS)
427 {
428 cfg->destroy(cfg);
429 }
430 }
431
432 METHOD(ike_sa_t, get_proposal, proposal_t*,
433 private_ike_sa_t *this)
434 {
435 return this->proposal;
436 }
437
438 METHOD(ike_sa_t, set_proposal, void,
439 private_ike_sa_t *this, proposal_t *proposal)
440 {
441 DESTROY_IF(this->proposal);
442 this->proposal = proposal->clone(proposal);
443 }
444
445 METHOD(ike_sa_t, set_message_id, void,
446 private_ike_sa_t *this, bool initiate, u_int32_t mid)
447 {
448 if (initiate)
449 {
450 this->task_manager->reset(this->task_manager, mid, UINT_MAX);
451 }
452 else
453 {
454 this->task_manager->reset(this->task_manager, UINT_MAX, mid);
455 }
456 }
457
458 METHOD(ike_sa_t, send_keepalive, void,
459 private_ike_sa_t *this)
460 {
461 send_keepalive_job_t *job;
462 time_t last_out, now, diff;
463
464 if (!(this->conditions & COND_NAT_HERE) || this->keepalive_interval == 0)
465 { /* disable keep alives if we are not NATed anymore */
466 return;
467 }
468
469 last_out = get_use_time(this, FALSE);
470 now = time_monotonic(NULL);
471
472 diff = now - last_out;
473
474 if (diff >= this->keepalive_interval)
475 {
476 packet_t *packet;
477 chunk_t data;
478
479 packet = packet_create();
480 packet->set_source(packet, this->my_host->clone(this->my_host));
481 packet->set_destination(packet, this->other_host->clone(this->other_host));
482 data.ptr = malloc(1);
483 data.ptr[0] = 0xFF;
484 data.len = 1;
485 packet->set_data(packet, data);
486 DBG1(DBG_IKE, "sending keep alive to %#H", this->other_host);
487 charon->sender->send_no_marker(charon->sender, packet);
488 diff = 0;
489 }
490 job = send_keepalive_job_create(this->ike_sa_id);
491 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
492 this->keepalive_interval - diff);
493 }
494
495 METHOD(ike_sa_t, get_ike_cfg, ike_cfg_t*,
496 private_ike_sa_t *this)
497 {
498 return this->ike_cfg;
499 }
500
501 METHOD(ike_sa_t, set_ike_cfg, void,
502 private_ike_sa_t *this, ike_cfg_t *ike_cfg)
503 {
504 ike_cfg->get_ref(ike_cfg);
505 this->ike_cfg = ike_cfg;
506 }
507
508 METHOD(ike_sa_t, enable_extension, void,
509 private_ike_sa_t *this, ike_extension_t extension)
510 {
511 this->extensions |= extension;
512 }
513
514 METHOD(ike_sa_t, supports_extension, bool,
515 private_ike_sa_t *this, ike_extension_t extension)
516 {
517 return (this->extensions & extension) != FALSE;
518 }
519
520 METHOD(ike_sa_t, has_condition, bool,
521 private_ike_sa_t *this, ike_condition_t condition)
522 {
523 return (this->conditions & condition) != FALSE;
524 }
525
526 METHOD(ike_sa_t, set_condition, void,
527 private_ike_sa_t *this, ike_condition_t condition, bool enable)
528 {
529 if (has_condition(this, condition) != enable)
530 {
531 if (enable)
532 {
533 this->conditions |= condition;
534 switch (condition)
535 {
536 case COND_NAT_HERE:
537 DBG1(DBG_IKE, "local host is behind NAT, sending keep alives");
538 this->conditions |= COND_NAT_ANY;
539 send_keepalive(this);
540 break;
541 case COND_NAT_THERE:
542 DBG1(DBG_IKE, "remote host is behind NAT");
543 this->conditions |= COND_NAT_ANY;
544 break;
545 case COND_NAT_FAKE:
546 DBG1(DBG_IKE, "faking NAT situation to enforce UDP encapsulation");
547 this->conditions |= COND_NAT_ANY;
548 break;
549 default:
550 break;
551 }
552 }
553 else
554 {
555 this->conditions &= ~condition;
556 switch (condition)
557 {
558 case COND_NAT_HERE:
559 case COND_NAT_FAKE:
560 case COND_NAT_THERE:
561 set_condition(this, COND_NAT_ANY,
562 has_condition(this, COND_NAT_HERE) ||
563 has_condition(this, COND_NAT_THERE) ||
564 has_condition(this, COND_NAT_FAKE));
565 break;
566 default:
567 break;
568 }
569 }
570 }
571 }
572
573 METHOD(ike_sa_t, send_dpd, status_t,
574 private_ike_sa_t *this)
575 {
576 job_t *job;
577 time_t diff, delay;
578 bool task_queued = FALSE;
579
580 if (this->state == IKE_PASSIVE)
581 {
582 return INVALID_STATE;
583 }
584 delay = this->peer_cfg->get_dpd(this->peer_cfg);
585 if (this->task_manager->busy(this->task_manager))
586 {
587 /* an exchange is in the air, no need to start a DPD check */
588 diff = 0;
589 }
590 else
591 {
592 /* check if there was any inbound traffic */
593 time_t last_in, now;
594 last_in = get_use_time(this, TRUE);
595 now = time_monotonic(NULL);
596 diff = now - last_in;
597 if (!delay || diff >= delay)
598 {
599 /* too long ago, initiate dead peer detection */
600 DBG1(DBG_IKE, "sending DPD request");
601 this->task_manager->queue_dpd(this->task_manager);
602 task_queued = TRUE;
603 diff = 0;
604 }
605 }
606 /* recheck in "interval" seconds */
607 if (delay)
608 {
609 job = (job_t*)send_dpd_job_create(this->ike_sa_id);
610 lib->scheduler->schedule_job(lib->scheduler, job, delay - diff);
611 }
612 if (task_queued)
613 {
614 return this->task_manager->initiate(this->task_manager);
615 }
616 return SUCCESS;
617 }
618
619 METHOD(ike_sa_t, get_state, ike_sa_state_t,
620 private_ike_sa_t *this)
621 {
622 return this->state;
623 }
624
625 METHOD(ike_sa_t, set_state, void,
626 private_ike_sa_t *this, ike_sa_state_t state)
627 {
628 bool trigger_dpd = FALSE;
629
630 DBG2(DBG_IKE, "IKE_SA %s[%d] state change: %N => %N",
631 get_name(this), this->unique_id,
632 ike_sa_state_names, this->state,
633 ike_sa_state_names, state);
634
635 switch (state)
636 {
637 case IKE_ESTABLISHED:
638 {
639 if (this->state == IKE_CONNECTING ||
640 this->state == IKE_PASSIVE)
641 {
642 job_t *job;
643 u_int32_t t;
644
645 /* calculate rekey, reauth and lifetime */
646 this->stats[STAT_ESTABLISHED] = time_monotonic(NULL);
647
648 /* schedule rekeying if we have a time which is smaller than
649 * an already scheduled rekeying */
650 t = this->peer_cfg->get_rekey_time(this->peer_cfg, TRUE);
651 if (t && (this->stats[STAT_REKEY] == 0 ||
652 (this->stats[STAT_REKEY] > t + this->stats[STAT_ESTABLISHED])))
653 {
654 this->stats[STAT_REKEY] = t + this->stats[STAT_ESTABLISHED];
655 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, FALSE);
656 lib->scheduler->schedule_job(lib->scheduler, job, t);
657 DBG1(DBG_IKE, "scheduling rekeying in %ds", t);
658 }
659 t = this->peer_cfg->get_reauth_time(this->peer_cfg, TRUE);
660 if (t && (this->stats[STAT_REAUTH] == 0 ||
661 (this->stats[STAT_REAUTH] > t + this->stats[STAT_ESTABLISHED])))
662 {
663 this->stats[STAT_REAUTH] = t + this->stats[STAT_ESTABLISHED];
664 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE);
665 lib->scheduler->schedule_job(lib->scheduler, job, t);
666 DBG1(DBG_IKE, "scheduling reauthentication in %ds", t);
667 }
668 t = this->peer_cfg->get_over_time(this->peer_cfg);
669 if (this->stats[STAT_REKEY] || this->stats[STAT_REAUTH])
670 {
671 if (this->stats[STAT_REAUTH] == 0)
672 {
673 this->stats[STAT_DELETE] = this->stats[STAT_REKEY];
674 }
675 else if (this->stats[STAT_REKEY] == 0)
676 {
677 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH];
678 }
679 else
680 {
681 this->stats[STAT_DELETE] = min(this->stats[STAT_REKEY],
682 this->stats[STAT_REAUTH]);
683 }
684 this->stats[STAT_DELETE] += t;
685 t = this->stats[STAT_DELETE] - this->stats[STAT_ESTABLISHED];
686 job = (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE);
687 lib->scheduler->schedule_job(lib->scheduler, job, t);
688 DBG1(DBG_IKE, "maximum IKE_SA lifetime %ds", t);
689 }
690 trigger_dpd = this->peer_cfg->get_dpd(this->peer_cfg);
691 }
692 break;
693 }
694 default:
695 break;
696 }
697 charon->bus->ike_state_change(charon->bus, &this->public, state);
698 this->state = state;
699
700 if (trigger_dpd)
701 {
702 if (supports_extension(this, EXT_DPD))
703 {
704 send_dpd(this);
705 }
706 else
707 {
708 DBG1(DBG_IKE, "DPD not supported by peer, disabled");
709 }
710 }
711 }
712
713 METHOD(ike_sa_t, reset, void,
714 private_ike_sa_t *this)
715 {
716 /* the responder ID is reset, as peer may choose another one */
717 if (this->ike_sa_id->is_initiator(this->ike_sa_id))
718 {
719 this->ike_sa_id->set_responder_spi(this->ike_sa_id, 0);
720 }
721
722 set_state(this, IKE_CREATED);
723
724 flush_auth_cfgs(this);
725
726 this->keymat->destroy(this->keymat);
727 this->keymat = keymat_create(this->version,
728 this->ike_sa_id->is_initiator(this->ike_sa_id));
729
730 this->task_manager->reset(this->task_manager, 0, 0);
731 }
732
733 METHOD(ike_sa_t, get_keymat, keymat_t*,
734 private_ike_sa_t *this)
735 {
736 return this->keymat;
737 }
738
739 METHOD(ike_sa_t, add_virtual_ip, void,
740 private_ike_sa_t *this, bool local, host_t *ip)
741 {
742 if (local)
743 {
744 char *iface;
745
746 if (hydra->kernel_interface->get_interface(hydra->kernel_interface,
747 this->my_host, &iface))
748 {
749 DBG1(DBG_IKE, "installing new virtual IP %H", ip);
750 if (hydra->kernel_interface->add_ip(hydra->kernel_interface,
751 ip, -1, iface) == SUCCESS)
752 {
753 this->my_vips->insert_last(this->my_vips, ip->clone(ip));
754 }
755 else
756 {
757 DBG1(DBG_IKE, "installing virtual IP %H failed", ip);
758 }
759 free(iface);
760 }
761 else
762 {
763 DBG1(DBG_IKE, "looking up interface for virtual IP %H failed", ip);
764 }
765 }
766 else
767 {
768 this->other_vips->insert_last(this->other_vips, ip->clone(ip));
769 }
770 }
771
772
773 METHOD(ike_sa_t, clear_virtual_ips, void,
774 private_ike_sa_t *this, bool local)
775 {
776 linked_list_t *vips = local ? this->my_vips : this->other_vips;
777 host_t *vip;
778
779 while (vips->remove_first(vips, (void**)&vip) == SUCCESS)
780 {
781 if (local)
782 {
783 hydra->kernel_interface->del_ip(hydra->kernel_interface,
784 vip, -1, TRUE);
785 }
786 vip->destroy(vip);
787 }
788 }
789
790 METHOD(ike_sa_t, create_virtual_ip_enumerator, enumerator_t*,
791 private_ike_sa_t *this, bool local)
792 {
793 if (local)
794 {
795 return this->my_vips->create_enumerator(this->my_vips);
796 }
797 return this->other_vips->create_enumerator(this->other_vips);
798 }
799
800 METHOD(ike_sa_t, add_peer_address, void,
801 private_ike_sa_t *this, host_t *host)
802 {
803 this->peer_addresses->insert_last(this->peer_addresses, host);
804 }
805
806 METHOD(ike_sa_t, create_peer_address_enumerator, enumerator_t*,
807 private_ike_sa_t *this)
808 {
809 if (this->peer_addresses->get_count(this->peer_addresses))
810 {
811 return this->peer_addresses->create_enumerator(this->peer_addresses);
812 }
813 /* in case we don't have MOBIKE */
814 return enumerator_create_single(this->other_host, NULL);
815 }
816
817 METHOD(ike_sa_t, clear_peer_addresses, void,
818 private_ike_sa_t *this)
819 {
820 enumerator_t *enumerator;
821 host_t *host;
822
823 enumerator = this->peer_addresses->create_enumerator(this->peer_addresses);
824 while (enumerator->enumerate(enumerator, (void**)&host))
825 {
826 this->peer_addresses->remove_at(this->peer_addresses,
827 enumerator);
828 host->destroy(host);
829 }
830 enumerator->destroy(enumerator);
831 }
832
833 METHOD(ike_sa_t, has_mapping_changed, bool,
834 private_ike_sa_t *this, chunk_t hash)
835 {
836 if (this->nat_detection_dest.ptr == NULL)
837 {
838 this->nat_detection_dest = chunk_clone(hash);
839 return FALSE;
840 }
841 if (chunk_equals(hash, this->nat_detection_dest))
842 {
843 return FALSE;
844 }
845 free(this->nat_detection_dest.ptr);
846 this->nat_detection_dest = chunk_clone(hash);
847 return TRUE;
848 }
849
850 METHOD(ike_sa_t, set_pending_updates, void,
851 private_ike_sa_t *this, u_int32_t updates)
852 {
853 this->pending_updates = updates;
854 }
855
856 METHOD(ike_sa_t, get_pending_updates, u_int32_t,
857 private_ike_sa_t *this)
858 {
859 return this->pending_updates;
860 }
861
862 METHOD(ike_sa_t, float_ports, void,
863 private_ike_sa_t *this)
864 {
865 /* do not switch if we have a custom port from MOBIKE/NAT */
866 if (this->my_host->get_port(this->my_host) ==
867 charon->socket->get_port(charon->socket, FALSE))
868 {
869 this->my_host->set_port(this->my_host,
870 charon->socket->get_port(charon->socket, TRUE));
871 }
872 if (this->other_host->get_port(this->other_host) == IKEV2_UDP_PORT)
873 {
874 this->other_host->set_port(this->other_host, IKEV2_NATT_PORT);
875 }
876 }
877
878 METHOD(ike_sa_t, update_hosts, void,
879 private_ike_sa_t *this, host_t *me, host_t *other, bool force)
880 {
881 bool update = FALSE;
882
883 if (me == NULL)
884 {
885 me = this->my_host;
886 }
887 if (other == NULL)
888 {
889 other = this->other_host;
890 }
891
892 /* apply hosts on first received message */
893 if (this->my_host->is_anyaddr(this->my_host) ||
894 this->other_host->is_anyaddr(this->other_host))
895 {
896 set_my_host(this, me->clone(me));
897 set_other_host(this, other->clone(other));
898 update = TRUE;
899 }
900 else
901 {
902 /* update our address in any case */
903 if (force && !me->equals(me, this->my_host))
904 {
905 set_my_host(this, me->clone(me));
906 update = TRUE;
907 }
908
909 if (!other->equals(other, this->other_host))
910 {
911 /* update others address if we are NOT NATed */
912 if ((has_condition(this, COND_NAT_THERE) &&
913 !has_condition(this, COND_NAT_HERE)) || force )
914 {
915 set_other_host(this, other->clone(other));
916 update = TRUE;
917 }
918 }
919 }
920
921 /* update all associated CHILD_SAs, if required */
922 if (update)
923 {
924 enumerator_t *enumerator;
925 child_sa_t *child_sa;
926
927 enumerator = this->child_sas->create_enumerator(this->child_sas);
928 while (enumerator->enumerate(enumerator, (void**)&child_sa))
929 {
930 if (child_sa->update(child_sa, this->my_host,
931 this->other_host, this->my_vips,
932 has_condition(this, COND_NAT_ANY)) == NOT_SUPPORTED)
933 {
934 this->public.rekey_child_sa(&this->public,
935 child_sa->get_protocol(child_sa),
936 child_sa->get_spi(child_sa, TRUE));
937 }
938 }
939 enumerator->destroy(enumerator);
940 }
941 }
942
943 /**
944 * Set configured DSCP value on packet
945 */
946 static void set_dscp(private_ike_sa_t *this, packet_t *packet)
947 {
948 ike_cfg_t *ike_cfg;
949
950 /* prefer IKE config on peer_cfg, as its selection is more accurate
951 * then the initial IKE config */
952 if (this->peer_cfg)
953 {
954 ike_cfg = this->peer_cfg->get_ike_cfg(this->peer_cfg);
955 }
956 else
957 {
958 ike_cfg = this->ike_cfg;
959 }
960 if (ike_cfg)
961 {
962 packet->set_dscp(packet, ike_cfg->get_dscp(ike_cfg));
963 }
964 }
965
966 METHOD(ike_sa_t, generate_message, status_t,
967 private_ike_sa_t *this, message_t *message, packet_t **packet)
968 {
969 status_t status;
970
971 if (message->is_encoded(message))
972 { /* already encoded in task, but set DSCP value */
973 *packet = message->get_packet(message);
974 set_dscp(this, *packet);
975 return SUCCESS;
976 }
977 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
978 message->set_ike_sa_id(message, this->ike_sa_id);
979 charon->bus->message(charon->bus, message, FALSE, TRUE);
980 status = message->generate(message, this->keymat, packet);
981 if (status == SUCCESS)
982 {
983 set_dscp(this, *packet);
984 charon->bus->message(charon->bus, message, FALSE, FALSE);
985 }
986 return status;
987 }
988
989 METHOD(ike_sa_t, set_kmaddress, void,
990 private_ike_sa_t *this, host_t *local, host_t *remote)
991 {
992 DESTROY_IF(this->local_host);
993 DESTROY_IF(this->remote_host);
994 this->local_host = local->clone(local);
995 this->remote_host = remote->clone(remote);
996 }
997
998 #ifdef ME
999 METHOD(ike_sa_t, act_as_mediation_server, void,
1000 private_ike_sa_t *this)
1001 {
1002 charon->mediation_manager->update_sa_id(charon->mediation_manager,
1003 this->other_id, this->ike_sa_id);
1004 this->is_mediation_server = TRUE;
1005 }
1006
1007 METHOD(ike_sa_t, get_server_reflexive_host, host_t*,
1008 private_ike_sa_t *this)
1009 {
1010 return this->server_reflexive_host;
1011 }
1012
1013 METHOD(ike_sa_t, set_server_reflexive_host, void,
1014 private_ike_sa_t *this, host_t *host)
1015 {
1016 DESTROY_IF(this->server_reflexive_host);
1017 this->server_reflexive_host = host;
1018 }
1019
1020 METHOD(ike_sa_t, get_connect_id, chunk_t,
1021 private_ike_sa_t *this)
1022 {
1023 return this->connect_id;
1024 }
1025
1026 METHOD(ike_sa_t, respond, status_t,
1027 private_ike_sa_t *this, identification_t *peer_id, chunk_t connect_id)
1028 {
1029 ike_me_t *task = ike_me_create(&this->public, TRUE);
1030 task->respond(task, peer_id, connect_id);
1031 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1032 return this->task_manager->initiate(this->task_manager);
1033 }
1034
1035 METHOD(ike_sa_t, callback, status_t,
1036 private_ike_sa_t *this, identification_t *peer_id)
1037 {
1038 ike_me_t *task = ike_me_create(&this->public, TRUE);
1039 task->callback(task, peer_id);
1040 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1041 return this->task_manager->initiate(this->task_manager);
1042 }
1043
1044 METHOD(ike_sa_t, relay, status_t,
1045 private_ike_sa_t *this, identification_t *requester, chunk_t connect_id,
1046 chunk_t connect_key, linked_list_t *endpoints, bool response)
1047 {
1048 ike_me_t *task = ike_me_create(&this->public, TRUE);
1049 task->relay(task, requester, connect_id, connect_key, endpoints, response);
1050 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1051 return this->task_manager->initiate(this->task_manager);
1052 }
1053
1054 METHOD(ike_sa_t, initiate_mediation, status_t,
1055 private_ike_sa_t *this, peer_cfg_t *mediated_cfg)
1056 {
1057 ike_me_t *task = ike_me_create(&this->public, TRUE);
1058 task->connect(task, mediated_cfg->get_peer_id(mediated_cfg));
1059 this->task_manager->queue_task(this->task_manager, (task_t*)task);
1060 return this->task_manager->initiate(this->task_manager);
1061 }
1062
1063 METHOD(ike_sa_t, initiate_mediated, status_t,
1064 private_ike_sa_t *this, host_t *me, host_t *other, chunk_t connect_id)
1065 {
1066 set_my_host(this, me->clone(me));
1067 set_other_host(this, other->clone(other));
1068 chunk_free(&this->connect_id);
1069 this->connect_id = chunk_clone(connect_id);
1070 return this->task_manager->initiate(this->task_manager);
1071 }
1072 #endif /* ME */
1073
1074 /**
1075 * Resolve DNS host in configuration
1076 */
1077 static void resolve_hosts(private_ike_sa_t *this)
1078 {
1079 host_t *host;
1080
1081 if (this->remote_host)
1082 {
1083 host = this->remote_host->clone(this->remote_host);
1084 host->set_port(host, IKEV2_UDP_PORT);
1085 }
1086 else
1087 {
1088 char *other_addr;
1089 u_int16_t other_port;
1090
1091 other_addr = this->ike_cfg->get_other_addr(this->ike_cfg, NULL);
1092 other_port = this->ike_cfg->get_other_port(this->ike_cfg);
1093 host = host_create_from_dns(other_addr, 0, other_port);
1094 }
1095 if (host)
1096 {
1097 set_other_host(this, host);
1098 }
1099
1100 if (this->local_host)
1101 {
1102 host = this->local_host->clone(this->local_host);
1103 host->set_port(host, charon->socket->get_port(charon->socket, FALSE));
1104 }
1105 else
1106 {
1107 char *my_addr;
1108 u_int16_t my_port;
1109 int family = 0;
1110
1111 /* use same address family as for other */
1112 if (!this->other_host->is_anyaddr(this->other_host))
1113 {
1114 family = this->other_host->get_family(this->other_host);
1115 }
1116 my_addr = this->ike_cfg->get_my_addr(this->ike_cfg, NULL);
1117 my_port = this->ike_cfg->get_my_port(this->ike_cfg);
1118 host = host_create_from_dns(my_addr, family, my_port);
1119
1120 if (host && host->is_anyaddr(host) &&
1121 !this->other_host->is_anyaddr(this->other_host))
1122 {
1123 host->destroy(host);
1124 host = hydra->kernel_interface->get_source_addr(
1125 hydra->kernel_interface, this->other_host, NULL);
1126 if (host)
1127 {
1128 host->set_port(host, this->ike_cfg->get_my_port(this->ike_cfg));
1129 }
1130 else
1131 { /* fallback to address family specific %any(6), if configured */
1132 host = host_create_from_dns(my_addr, 0, my_port);
1133 }
1134 }
1135 }
1136 if (host)
1137 {
1138 set_my_host(this, host);
1139 }
1140 }
1141
1142 METHOD(ike_sa_t, initiate, status_t,
1143 private_ike_sa_t *this, child_cfg_t *child_cfg, u_int32_t reqid,
1144 traffic_selector_t *tsi, traffic_selector_t *tsr)
1145 {
1146 bool defer_initiate = FALSE;
1147
1148 if (this->state == IKE_CREATED)
1149 {
1150 if (this->my_host->is_anyaddr(this->my_host) ||
1151 this->other_host->is_anyaddr(this->other_host))
1152 {
1153 resolve_hosts(this);
1154 }
1155
1156 if (this->other_host->is_anyaddr(this->other_host)
1157 #ifdef ME
1158 && !this->peer_cfg->get_mediated_by(this->peer_cfg)
1159 #endif /* ME */
1160 )
1161 {
1162 char *addr = this->ike_cfg->get_other_addr(this->ike_cfg, NULL);
1163 bool is_anyaddr = streq(addr, "%any") || streq(addr, "%any6");
1164
1165 if (is_anyaddr || !this->retry_initiate_interval)
1166 {
1167 if (is_anyaddr)
1168 {
1169 DBG1(DBG_IKE, "unable to initiate to %s", addr);
1170 }
1171 else
1172 {
1173 DBG1(DBG_IKE, "unable to resolve %s, initiate aborted",
1174 addr);
1175 }
1176 DESTROY_IF(child_cfg);
1177 charon->bus->alert(charon->bus, ALERT_PEER_ADDR_FAILED);
1178 return DESTROY_ME;
1179 }
1180 DBG1(DBG_IKE, "unable to resolve %s, retrying in %ds",
1181 addr, this->retry_initiate_interval);
1182 defer_initiate = TRUE;
1183 }
1184
1185 set_condition(this, COND_ORIGINAL_INITIATOR, TRUE);
1186 this->task_manager->queue_ike(this->task_manager);
1187 }
1188
1189 #ifdef ME
1190 if (this->peer_cfg->is_mediation(this->peer_cfg))
1191 {
1192 if (this->state == IKE_ESTABLISHED)
1193 {
1194 /* mediation connection is already established, retrigger state
1195 * change to notify bus listeners */
1196 DBG1(DBG_IKE, "mediation connection is already up");
1197 set_state(this, IKE_ESTABLISHED);
1198 }
1199 DESTROY_IF(child_cfg);
1200 }
1201 else
1202 #endif /* ME */
1203 if (child_cfg)
1204 {
1205 /* normal IKE_SA with CHILD_SA */
1206 this->task_manager->queue_child(this->task_manager, child_cfg, reqid,
1207 tsi, tsr);
1208 #ifdef ME
1209 if (this->peer_cfg->get_mediated_by(this->peer_cfg))
1210 {
1211 /* mediated connection, initiate mediation process */
1212 job_t *job = (job_t*)initiate_mediation_job_create(this->ike_sa_id);
1213 lib->processor->queue_job(lib->processor, job);
1214 return SUCCESS;
1215 }
1216 #endif /* ME */
1217 }
1218
1219 if (defer_initiate)
1220 {
1221 if (!this->retry_initiate_queued)
1222 {
1223 job_t *job = (job_t*)retry_initiate_job_create(this->ike_sa_id);
1224 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
1225 this->retry_initiate_interval);
1226 this->retry_initiate_queued = TRUE;
1227 }
1228 return SUCCESS;
1229 }
1230 this->retry_initiate_queued = FALSE;
1231 return this->task_manager->initiate(this->task_manager);
1232 }
1233
1234 METHOD(ike_sa_t, retry_initiate, status_t,
1235 private_ike_sa_t *this)
1236 {
1237 if (this->retry_initiate_queued)
1238 {
1239 this->retry_initiate_queued = FALSE;
1240 return initiate(this, NULL, 0, NULL, NULL);
1241 }
1242 return SUCCESS;
1243 }
1244
1245 METHOD(ike_sa_t, process_message, status_t,
1246 private_ike_sa_t *this, message_t *message)
1247 {
1248 status_t status;
1249
1250 if (this->state == IKE_PASSIVE)
1251 { /* do not handle messages in passive state */
1252 return FAILED;
1253 }
1254 if (message->get_major_version(message) != this->version)
1255 {
1256 DBG1(DBG_IKE, "ignoring %N IKEv%u exchange on %N SA",
1257 exchange_type_names, message->get_exchange_type(message),
1258 message->get_major_version(message),
1259 ike_version_names, this->version);
1260 /* TODO-IKEv1: fall back to IKEv1 if we receive an IKEv1
1261 * INVALID_MAJOR_VERSION on an IKEv2 SA. */
1262 return FAILED;
1263 }
1264 status = this->task_manager->process_message(this->task_manager, message);
1265 if (this->flush_auth_cfg && this->state == IKE_ESTABLISHED)
1266 {
1267 /* authentication completed */
1268 this->flush_auth_cfg = FALSE;
1269 flush_auth_cfgs(this);
1270 }
1271 return status;
1272 }
1273
1274 METHOD(ike_sa_t, get_id, ike_sa_id_t*,
1275 private_ike_sa_t *this)
1276 {
1277 return this->ike_sa_id;
1278 }
1279
1280 METHOD(ike_sa_t, get_version, ike_version_t,
1281 private_ike_sa_t *this)
1282 {
1283 return this->version;
1284 }
1285
1286 METHOD(ike_sa_t, get_my_id, identification_t*,
1287 private_ike_sa_t *this)
1288 {
1289 return this->my_id;
1290 }
1291
1292 METHOD(ike_sa_t, set_my_id, void,
1293 private_ike_sa_t *this, identification_t *me)
1294 {
1295 DESTROY_IF(this->my_id);
1296 this->my_id = me;
1297 }
1298
1299 METHOD(ike_sa_t, get_other_id, identification_t*,
1300 private_ike_sa_t *this)
1301 {
1302 return this->other_id;
1303 }
1304
1305 METHOD(ike_sa_t, get_other_eap_id, identification_t*,
1306 private_ike_sa_t *this)
1307 {
1308 identification_t *id = NULL, *current;
1309 enumerator_t *enumerator;
1310 auth_cfg_t *cfg;
1311
1312 enumerator = this->other_auths->create_enumerator(this->other_auths);
1313 while (enumerator->enumerate(enumerator, &cfg))
1314 {
1315 /* prefer EAP-Identity of last round */
1316 current = cfg->get(cfg, AUTH_RULE_EAP_IDENTITY);
1317 if (!current || current->get_type(current) == ID_ANY)
1318 {
1319 current = cfg->get(cfg, AUTH_RULE_XAUTH_IDENTITY);
1320 }
1321 if (!current || current->get_type(current) == ID_ANY)
1322 {
1323 current = cfg->get(cfg, AUTH_RULE_IDENTITY);
1324 }
1325 if (current && current->get_type(current) != ID_ANY)
1326 {
1327 id = current;
1328 continue;
1329 }
1330 }
1331 enumerator->destroy(enumerator);
1332 if (id)
1333 {
1334 return id;
1335 }
1336 return this->other_id;
1337 }
1338
1339 METHOD(ike_sa_t, set_other_id, void,
1340 private_ike_sa_t *this, identification_t *other)
1341 {
1342 DESTROY_IF(this->other_id);
1343 this->other_id = other;
1344 }
1345
1346 METHOD(ike_sa_t, add_child_sa, void,
1347 private_ike_sa_t *this, child_sa_t *child_sa)
1348 {
1349 this->child_sas->insert_last(this->child_sas, child_sa);
1350 }
1351
1352 METHOD(ike_sa_t, get_child_sa, child_sa_t*,
1353 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool inbound)
1354 {
1355 enumerator_t *enumerator;
1356 child_sa_t *current, *found = NULL;
1357
1358 enumerator = this->child_sas->create_enumerator(this->child_sas);
1359 while (enumerator->enumerate(enumerator, (void**)&current))
1360 {
1361 if (current->get_spi(current, inbound) == spi &&
1362 current->get_protocol(current) == protocol)
1363 {
1364 found = current;
1365 }
1366 }
1367 enumerator->destroy(enumerator);
1368 return found;
1369 }
1370
1371 METHOD(ike_sa_t, get_child_count, int,
1372 private_ike_sa_t *this)
1373 {
1374 return this->child_sas->get_count(this->child_sas);
1375 }
1376
1377 METHOD(ike_sa_t, create_child_sa_enumerator, enumerator_t*,
1378 private_ike_sa_t *this)
1379 {
1380 return this->child_sas->create_enumerator(this->child_sas);
1381 }
1382
1383 METHOD(ike_sa_t, remove_child_sa, void,
1384 private_ike_sa_t *this, enumerator_t *enumerator)
1385 {
1386 this->child_sas->remove_at(this->child_sas, enumerator);
1387 }
1388
1389 METHOD(ike_sa_t, rekey_child_sa, status_t,
1390 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1391 {
1392 if (this->state == IKE_PASSIVE)
1393 {
1394 return INVALID_STATE;
1395 }
1396 this->task_manager->queue_child_rekey(this->task_manager, protocol, spi);
1397 return this->task_manager->initiate(this->task_manager);
1398 }
1399
1400 METHOD(ike_sa_t, delete_child_sa, status_t,
1401 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool expired)
1402 {
1403 if (this->state == IKE_PASSIVE)
1404 {
1405 return INVALID_STATE;
1406 }
1407 this->task_manager->queue_child_delete(this->task_manager,
1408 protocol, spi, expired);
1409 return this->task_manager->initiate(this->task_manager);
1410 }
1411
1412 METHOD(ike_sa_t, destroy_child_sa, status_t,
1413 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1414 {
1415 enumerator_t *enumerator;
1416 child_sa_t *child_sa;
1417 status_t status = NOT_FOUND;
1418
1419 enumerator = this->child_sas->create_enumerator(this->child_sas);
1420 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1421 {
1422 if (child_sa->get_protocol(child_sa) == protocol &&
1423 child_sa->get_spi(child_sa, TRUE) == spi)
1424 {
1425 this->child_sas->remove_at(this->child_sas, enumerator);
1426 child_sa->destroy(child_sa);
1427 status = SUCCESS;
1428 break;
1429 }
1430 }
1431 enumerator->destroy(enumerator);
1432 return status;
1433 }
1434
1435 METHOD(ike_sa_t, delete_, status_t,
1436 private_ike_sa_t *this)
1437 {
1438 switch (this->state)
1439 {
1440 case IKE_REKEYING:
1441 if (this->version == IKEV1)
1442 { /* SA has been reauthenticated, delete */
1443 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1444 break;
1445 }
1446 /* FALL */
1447 case IKE_ESTABLISHED:
1448 this->task_manager->queue_ike_delete(this->task_manager);
1449 return this->task_manager->initiate(this->task_manager);
1450 case IKE_CREATED:
1451 DBG1(DBG_IKE, "deleting unestablished IKE_SA");
1452 break;
1453 case IKE_PASSIVE:
1454 break;
1455 default:
1456 DBG1(DBG_IKE, "destroying IKE_SA in state %N "
1457 "without notification", ike_sa_state_names, this->state);
1458 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1459 break;
1460 }
1461 return DESTROY_ME;
1462 }
1463
1464 METHOD(ike_sa_t, rekey, status_t,
1465 private_ike_sa_t *this)
1466 {
1467 if (this->state == IKE_PASSIVE)
1468 {
1469 return INVALID_STATE;
1470 }
1471 this->task_manager->queue_ike_rekey(this->task_manager);
1472 return this->task_manager->initiate(this->task_manager);
1473 }
1474
1475 METHOD(ike_sa_t, reauth, status_t,
1476 private_ike_sa_t *this)
1477 {
1478 if (this->state == IKE_PASSIVE)
1479 {
1480 return INVALID_STATE;
1481 }
1482 /* we can't reauthenticate as responder when we use EAP or virtual IPs.
1483 * If the peer does not support RFC4478, there is no way to keep the
1484 * IKE_SA up. */
1485 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1486 {
1487 DBG1(DBG_IKE, "initiator did not reauthenticate as requested");
1488 if (this->other_vips->get_count(this->other_vips) != 0 ||
1489 has_condition(this, COND_XAUTH_AUTHENTICATED) ||
1490 has_condition(this, COND_EAP_AUTHENTICATED)
1491 #ifdef ME
1492 /* as mediation server we too cannot reauth the IKE_SA */
1493 || this->is_mediation_server
1494 #endif /* ME */
1495 )
1496 {
1497 time_t del, now;
1498
1499 del = this->stats[STAT_DELETE];
1500 now = time_monotonic(NULL);
1501 DBG1(DBG_IKE, "IKE_SA %s[%d] will timeout in %V",
1502 get_name(this), this->unique_id, &now, &del);
1503 return FAILED;
1504 }
1505 else
1506 {
1507 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d] actively",
1508 get_name(this), this->unique_id);
1509 }
1510 }
1511 else
1512 {
1513 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d]",
1514 get_name(this), this->unique_id);
1515 }
1516 set_condition(this, COND_REAUTHENTICATING, TRUE);
1517 this->task_manager->queue_ike_reauth(this->task_manager);
1518 return this->task_manager->initiate(this->task_manager);
1519 }
1520
1521 METHOD(ike_sa_t, reestablish, status_t,
1522 private_ike_sa_t *this)
1523 {
1524 ike_sa_t *new;
1525 host_t *host;
1526 action_t action;
1527 enumerator_t *enumerator;
1528 child_sa_t *child_sa;
1529 child_cfg_t *child_cfg;
1530 bool restart = FALSE;
1531 status_t status = FAILED;
1532
1533 if (has_condition(this, COND_REAUTHENTICATING))
1534 { /* only reauthenticate if we have children */
1535 if (this->child_sas->get_count(this->child_sas) == 0
1536 #ifdef ME
1537 /* allow reauth of mediation connections without CHILD_SAs */
1538 && !this->peer_cfg->is_mediation(this->peer_cfg)
1539 #endif /* ME */
1540 )
1541 {
1542 DBG1(DBG_IKE, "unable to reauthenticate IKE_SA, no CHILD_SA "
1543 "to recreate");
1544 }
1545 else
1546 {
1547 restart = TRUE;
1548 }
1549 }
1550 else
1551 { /* check if we have children to keep up at all */
1552 enumerator = this->child_sas->create_enumerator(this->child_sas);
1553 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1554 {
1555 if (this->state == IKE_DELETING)
1556 {
1557 action = child_sa->get_close_action(child_sa);
1558 }
1559 else
1560 {
1561 action = child_sa->get_dpd_action(child_sa);
1562 }
1563 switch (action)
1564 {
1565 case ACTION_RESTART:
1566 restart = TRUE;
1567 break;
1568 case ACTION_ROUTE:
1569 charon->traps->install(charon->traps, this->peer_cfg,
1570 child_sa->get_config(child_sa));
1571 break;
1572 default:
1573 break;
1574 }
1575 }
1576 enumerator->destroy(enumerator);
1577 #ifdef ME
1578 /* mediation connections have no children, keep them up anyway */
1579 if (this->peer_cfg->is_mediation(this->peer_cfg))
1580 {
1581 restart = TRUE;
1582 }
1583 #endif /* ME */
1584 }
1585 if (!restart)
1586 {
1587 return FAILED;
1588 }
1589
1590 /* check if we are able to reestablish this IKE_SA */
1591 if (!has_condition(this, COND_ORIGINAL_INITIATOR) &&
1592 (this->other_vips->get_count(this->other_vips) != 0 ||
1593 has_condition(this, COND_EAP_AUTHENTICATED)
1594 #ifdef ME
1595 || this->is_mediation_server
1596 #endif /* ME */
1597 ))
1598 {
1599 DBG1(DBG_IKE, "unable to reestablish IKE_SA due to asymmetric setup");
1600 return FAILED;
1601 }
1602
1603 new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager,
1604 this->version, TRUE);
1605 if (!new)
1606 {
1607 return FAILED;
1608 }
1609 new->set_peer_cfg(new, this->peer_cfg);
1610 host = this->other_host;
1611 new->set_other_host(new, host->clone(host));
1612 host = this->my_host;
1613 new->set_my_host(new, host->clone(host));
1614 /* if we already have a virtual IP, we reuse it */
1615 enumerator = this->my_vips->create_enumerator(this->my_vips);
1616 while (enumerator->enumerate(enumerator, &host))
1617 {
1618 new->add_virtual_ip(new, TRUE, host);
1619 }
1620 enumerator->destroy(enumerator);
1621
1622 #ifdef ME
1623 if (this->peer_cfg->is_mediation(this->peer_cfg))
1624 {
1625 status = new->initiate(new, NULL, 0, NULL, NULL);
1626 }
1627 else
1628 #endif /* ME */
1629 {
1630 enumerator = this->child_sas->create_enumerator(this->child_sas);
1631 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1632 {
1633 if (has_condition(this, COND_REAUTHENTICATING))
1634 {
1635 switch (child_sa->get_state(child_sa))
1636 {
1637 case CHILD_ROUTED:
1638 { /* move routed child directly */
1639 this->child_sas->remove_at(this->child_sas, enumerator);
1640 new->add_child_sa(new, child_sa);
1641 action = ACTION_NONE;
1642 break;
1643 }
1644 default:
1645 { /* initiate/queue all other CHILD_SAs */
1646 action = ACTION_RESTART;
1647 break;
1648 }
1649 }
1650 }
1651 else
1652 { /* only restart CHILD_SAs that are configured accordingly */
1653 if (this->state == IKE_DELETING)
1654 {
1655 action = child_sa->get_close_action(child_sa);
1656 }
1657 else
1658 {
1659 action = child_sa->get_dpd_action(child_sa);
1660 }
1661 }
1662 switch (action)
1663 {
1664 case ACTION_RESTART:
1665 child_cfg = child_sa->get_config(child_sa);
1666 DBG1(DBG_IKE, "restarting CHILD_SA %s",
1667 child_cfg->get_name(child_cfg));
1668 child_cfg->get_ref(child_cfg);
1669 status = new->initiate(new, child_cfg, 0, NULL, NULL);
1670 break;
1671 default:
1672 continue;
1673 }
1674 if (status == DESTROY_ME)
1675 {
1676 break;
1677 }
1678 }
1679 enumerator->destroy(enumerator);
1680 }
1681
1682 if (status == DESTROY_ME)
1683 {
1684 charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, new);
1685 status = FAILED;
1686 }
1687 else
1688 {
1689 charon->bus->ike_reestablish(charon->bus, &this->public, new);
1690 charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
1691 status = SUCCESS;
1692 }
1693 charon->bus->set_sa(charon->bus, &this->public);
1694 return status;
1695 }
1696
1697 METHOD(ike_sa_t, retransmit, status_t,
1698 private_ike_sa_t *this, u_int32_t message_id)
1699 {
1700 if (this->state == IKE_PASSIVE)
1701 {
1702 return INVALID_STATE;
1703 }
1704 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
1705 if (this->task_manager->retransmit(this->task_manager, message_id) != SUCCESS)
1706 {
1707 /* send a proper signal to brief interested bus listeners */
1708 switch (this->state)
1709 {
1710 case IKE_CONNECTING:
1711 {
1712 /* retry IKE_SA_INIT/Main Mode if we have multiple keyingtries */
1713 u_int32_t tries = this->peer_cfg->get_keyingtries(this->peer_cfg);
1714 charon->bus->alert(charon->bus, ALERT_PEER_INIT_UNREACHABLE,
1715 this->keyingtry);
1716 this->keyingtry++;
1717 if (tries == 0 || tries > this->keyingtry)
1718 {
1719 DBG1(DBG_IKE, "peer not responding, trying again (%d/%d)",
1720 this->keyingtry + 1, tries);
1721 reset(this);
1722 resolve_hosts(this);
1723 this->task_manager->queue_ike(this->task_manager);
1724 return this->task_manager->initiate(this->task_manager);
1725 }
1726 DBG1(DBG_IKE, "establishing IKE_SA failed, peer not responding");
1727 break;
1728 }
1729 case IKE_DELETING:
1730 DBG1(DBG_IKE, "proper IKE_SA delete failed, peer not responding");
1731 if (has_condition(this, COND_REAUTHENTICATING))
1732 {
1733 DBG1(DBG_IKE, "delete during reauthentication failed, "
1734 "trying to reestablish IKE_SA anyway");
1735 reestablish(this);
1736 }
1737 break;
1738 case IKE_REKEYING:
1739 DBG1(DBG_IKE, "rekeying IKE_SA failed, peer not responding");
1740 /* FALL */
1741 default:
1742 reestablish(this);
1743 break;
1744 }
1745 if (this->state != IKE_CONNECTING)
1746 {
1747 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1748 }
1749 return DESTROY_ME;
1750 }
1751 return SUCCESS;
1752 }
1753
1754 METHOD(ike_sa_t, set_auth_lifetime, status_t,
1755 private_ike_sa_t *this, u_int32_t lifetime)
1756 {
1757 u_int32_t diff, hard, soft, now;
1758 bool send_update;
1759
1760 diff = this->peer_cfg->get_over_time(this->peer_cfg);
1761 now = time_monotonic(NULL);
1762 hard = now + lifetime;
1763 soft = hard - diff;
1764
1765 /* check if we have to send an AUTH_LIFETIME to enforce the new lifetime.
1766 * We send the notify in IKE_AUTH if not yet ESTABLISHED. */
1767 send_update = this->state == IKE_ESTABLISHED && this->version == IKEV2 &&
1768 !has_condition(this, COND_ORIGINAL_INITIATOR) &&
1769 (this->other_vips->get_count(this->other_vips) != 0 ||
1770 has_condition(this, COND_EAP_AUTHENTICATED));
1771
1772 if (lifetime < diff)
1773 {
1774 this->stats[STAT_REAUTH] = now;
1775
1776 if (!send_update)
1777 {
1778 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1779 "starting reauthentication", lifetime);
1780 lib->processor->queue_job(lib->processor,
1781 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE));
1782 }
1783 }
1784 else if (this->stats[STAT_REAUTH] == 0 ||
1785 this->stats[STAT_REAUTH] > soft)
1786 {
1787 this->stats[STAT_REAUTH] = soft;
1788 if (!send_update)
1789 {
1790 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, scheduling "
1791 "reauthentication in %ds", lifetime, lifetime - diff);
1792 lib->scheduler->schedule_job(lib->scheduler,
1793 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE),
1794 lifetime - diff);
1795 }
1796 }
1797 else
1798 {
1799 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1800 "reauthentication already scheduled in %ds", lifetime,
1801 this->stats[STAT_REAUTH] - time_monotonic(NULL));
1802 send_update = FALSE;
1803 }
1804 /* give at least some seconds to reauthenticate */
1805 this->stats[STAT_DELETE] = max(hard, now + 10);
1806
1807 #ifdef USE_IKEV2
1808 if (send_update)
1809 {
1810 ike_auth_lifetime_t *task;
1811
1812 task = ike_auth_lifetime_create(&this->public, TRUE);
1813 this->task_manager->queue_task(this->task_manager, &task->task);
1814 return this->task_manager->initiate(this->task_manager);
1815 }
1816 #endif
1817 return SUCCESS;
1818 }
1819
1820 /**
1821 * Check if the current combination of source and destination address is still
1822 * valid.
1823 */
1824 static bool is_current_path_valid(private_ike_sa_t *this)
1825 {
1826 bool valid = FALSE;
1827 host_t *src;
1828 src = hydra->kernel_interface->get_source_addr(hydra->kernel_interface,
1829 this->other_host, this->my_host);
1830 if (src)
1831 {
1832 if (src->ip_equals(src, this->my_host))
1833 {
1834 valid = TRUE;
1835 }
1836 src->destroy(src);
1837 }
1838 return valid;
1839 }
1840
1841 /**
1842 * Check if we have any path avialable for this IKE SA.
1843 */
1844 static bool is_any_path_valid(private_ike_sa_t *this)
1845 {
1846 bool valid = FALSE;
1847 enumerator_t *enumerator;
1848 host_t *src = NULL, *addr;
1849
1850 DBG1(DBG_IKE, "old path is not available anymore, try to find another");
1851 enumerator = create_peer_address_enumerator(this);
1852 while (enumerator->enumerate(enumerator, &addr))
1853 {
1854 DBG1(DBG_IKE, "looking for a route to %H ...", addr);
1855 src = hydra->kernel_interface->get_source_addr(
1856 hydra->kernel_interface, addr, NULL);
1857 if (src)
1858 {
1859 break;
1860 }
1861 }
1862 enumerator->destroy(enumerator);
1863 if (src)
1864 {
1865 valid = TRUE;
1866 src->destroy(src);
1867 }
1868 return valid;
1869 }
1870
1871 METHOD(ike_sa_t, roam, status_t,
1872 private_ike_sa_t *this, bool address)
1873 {
1874 switch (this->state)
1875 {
1876 case IKE_CREATED:
1877 case IKE_DELETING:
1878 case IKE_DESTROYING:
1879 case IKE_PASSIVE:
1880 return SUCCESS;
1881 default:
1882 break;
1883 }
1884
1885 /* keep existing path if possible */
1886 if (is_current_path_valid(this))
1887 {
1888 DBG2(DBG_IKE, "keeping connection path %H - %H",
1889 this->my_host, this->other_host);
1890 set_condition(this, COND_STALE, FALSE);
1891
1892 if (supports_extension(this, EXT_MOBIKE) && address)
1893 { /* if any addresses changed, send an updated list */
1894 DBG1(DBG_IKE, "sending address list update using MOBIKE");
1895 this->task_manager->queue_mobike(this->task_manager, FALSE, TRUE);
1896 return this->task_manager->initiate(this->task_manager);
1897 }
1898 return SUCCESS;
1899 }
1900
1901 if (!is_any_path_valid(this))
1902 {
1903 DBG1(DBG_IKE, "no route found to reach %H, MOBIKE update deferred",
1904 this->other_host);
1905 set_condition(this, COND_STALE, TRUE);
1906 return SUCCESS;
1907 }
1908 set_condition(this, COND_STALE, FALSE);
1909
1910 /* update addresses with mobike, if supported ... */
1911 if (supports_extension(this, EXT_MOBIKE))
1912 {
1913 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1914 { /* responder updates the peer about changed address config */
1915 DBG1(DBG_IKE, "sending address list update using MOBIKE, "
1916 "implicitly requesting an address change");
1917 address = TRUE;
1918 }
1919 else
1920 {
1921 DBG1(DBG_IKE, "requesting address change using MOBIKE");
1922 }
1923 this->task_manager->queue_mobike(this->task_manager, TRUE, address);
1924 return this->task_manager->initiate(this->task_manager);
1925 }
1926
1927 /* ... reauth if not */
1928 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1929 { /* responder does not reauthenticate */
1930 set_condition(this, COND_STALE, TRUE);
1931 return SUCCESS;
1932 }
1933 DBG1(DBG_IKE, "reauthenticating IKE_SA due to address change");
1934 /* since our previous path is not valid anymore, try and find a new one */
1935 resolve_hosts(this);
1936 return reauth(this);
1937 }
1938
1939 METHOD(ike_sa_t, add_configuration_attribute, void,
1940 private_ike_sa_t *this, attribute_handler_t *handler,
1941 configuration_attribute_type_t type, chunk_t data)
1942 {
1943 attribute_entry_t *entry = malloc_thing(attribute_entry_t);
1944
1945 entry->handler = handler;
1946 entry->type = type;
1947 entry->data = chunk_clone(data);
1948
1949 this->attributes->insert_last(this->attributes, entry);
1950 }
1951
1952 METHOD(ike_sa_t, create_task_enumerator, enumerator_t*,
1953 private_ike_sa_t *this, task_queue_t queue)
1954 {
1955 return this->task_manager->create_task_enumerator(this->task_manager, queue);
1956 }
1957
1958 METHOD(ike_sa_t, flush_queue, void,
1959 private_ike_sa_t *this, task_queue_t queue)
1960 {
1961 this->task_manager->flush_queue(this->task_manager, queue);
1962 }
1963
1964 METHOD(ike_sa_t, queue_task, void,
1965 private_ike_sa_t *this, task_t *task)
1966 {
1967 this->task_manager->queue_task(this->task_manager, task);
1968 }
1969
1970 METHOD(ike_sa_t, inherit, void,
1971 private_ike_sa_t *this, ike_sa_t *other_public)
1972 {
1973 private_ike_sa_t *other = (private_ike_sa_t*)other_public;
1974 child_sa_t *child_sa;
1975 attribute_entry_t *entry;
1976 enumerator_t *enumerator;
1977 auth_cfg_t *cfg;
1978 host_t *vip;
1979
1980 /* apply hosts and ids */
1981 this->my_host->destroy(this->my_host);
1982 this->other_host->destroy(this->other_host);
1983 this->my_id->destroy(this->my_id);
1984 this->other_id->destroy(this->other_id);
1985 this->my_host = other->my_host->clone(other->my_host);
1986 this->other_host = other->other_host->clone(other->other_host);
1987 this->my_id = other->my_id->clone(other->my_id);
1988 this->other_id = other->other_id->clone(other->other_id);
1989
1990 /* apply assigned virtual IPs... */
1991 while (other->my_vips->remove_last(other->my_vips, (void**)&vip) == SUCCESS)
1992 {
1993 this->my_vips->insert_first(this->my_vips, vip);
1994 }
1995 while (other->other_vips->remove_last(other->other_vips,
1996 (void**)&vip) == SUCCESS)
1997 {
1998 this->other_vips->insert_first(this->other_vips, vip);
1999 }
2000
2001 /* authentication information */
2002 enumerator = other->my_auths->create_enumerator(other->my_auths);
2003 while (enumerator->enumerate(enumerator, &cfg))
2004 {
2005 this->my_auths->insert_last(this->my_auths, cfg->clone(cfg));
2006 }
2007 enumerator->destroy(enumerator);
2008 enumerator = other->other_auths->create_enumerator(other->other_auths);
2009 while (enumerator->enumerate(enumerator, &cfg))
2010 {
2011 this->other_auths->insert_last(this->other_auths, cfg->clone(cfg));
2012 }
2013 enumerator->destroy(enumerator);
2014
2015 /* ... and configuration attributes */
2016 while (other->attributes->remove_last(other->attributes,
2017 (void**)&entry) == SUCCESS)
2018 {
2019 this->attributes->insert_first(this->attributes, entry);
2020 }
2021
2022 /* inherit all conditions */
2023 this->conditions = other->conditions;
2024 if (this->conditions & COND_NAT_HERE)
2025 {
2026 send_keepalive(this);
2027 }
2028
2029 #ifdef ME
2030 if (other->is_mediation_server)
2031 {
2032 act_as_mediation_server(this);
2033 }
2034 else if (other->server_reflexive_host)
2035 {
2036 this->server_reflexive_host = other->server_reflexive_host->clone(
2037 other->server_reflexive_host);
2038 }
2039 #endif /* ME */
2040
2041 /* adopt all children */
2042 while (other->child_sas->remove_last(other->child_sas,
2043 (void**)&child_sa) == SUCCESS)
2044 {
2045 this->child_sas->insert_first(this->child_sas, (void*)child_sa);
2046 }
2047
2048 /* move pending tasks to the new IKE_SA */
2049 this->task_manager->adopt_tasks(this->task_manager, other->task_manager);
2050
2051 /* reauthentication timeout survives a rekeying */
2052 if (other->stats[STAT_REAUTH])
2053 {
2054 time_t reauth, delete, now = time_monotonic(NULL);
2055
2056 this->stats[STAT_REAUTH] = other->stats[STAT_REAUTH];
2057 reauth = this->stats[STAT_REAUTH] - now;
2058 delete = reauth + this->peer_cfg->get_over_time(this->peer_cfg);
2059 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH] + delete;
2060 DBG1(DBG_IKE, "rescheduling reauthentication in %ds after rekeying, "
2061 "lifetime reduced to %ds", reauth, delete);
2062 lib->scheduler->schedule_job(lib->scheduler,
2063 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE), reauth);
2064 lib->scheduler->schedule_job(lib->scheduler,
2065 (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE), delete);
2066 }
2067 }
2068
2069 METHOD(ike_sa_t, destroy, void,
2070 private_ike_sa_t *this)
2071 {
2072 attribute_entry_t *entry;
2073 host_t *vip;
2074
2075 charon->bus->set_sa(charon->bus, &this->public);
2076
2077 set_state(this, IKE_DESTROYING);
2078 DESTROY_IF(this->task_manager);
2079
2080 /* remove attributes first, as we pass the IKE_SA to the handler */
2081 while (this->attributes->remove_last(this->attributes,
2082 (void**)&entry) == SUCCESS)
2083 {
2084 hydra->attributes->release(hydra->attributes, entry->handler,
2085 this->other_id, entry->type, entry->data);
2086 free(entry->data.ptr);
2087 free(entry);
2088 }
2089 this->attributes->destroy(this->attributes);
2090
2091 this->child_sas->destroy_offset(this->child_sas, offsetof(child_sa_t, destroy));
2092
2093 /* unset SA after here to avoid usage by the listeners */
2094 charon->bus->set_sa(charon->bus, NULL);
2095
2096 DESTROY_IF(this->keymat);
2097
2098 while (this->my_vips->remove_last(this->my_vips, (void**)&vip) == SUCCESS)
2099 {
2100 hydra->kernel_interface->del_ip(hydra->kernel_interface, vip, -1, TRUE);
2101 vip->destroy(vip);
2102 }
2103 this->my_vips->destroy(this->my_vips);
2104 while (this->other_vips->remove_last(this->other_vips,
2105 (void**)&vip) == SUCCESS)
2106 {
2107 if (this->peer_cfg)
2108 {
2109 linked_list_t *pools;
2110 identification_t *id;
2111
2112 id = get_other_eap_id(this);
2113 pools = linked_list_create_from_enumerator(
2114 this->peer_cfg->create_pool_enumerator(this->peer_cfg));
2115 hydra->attributes->release_address(hydra->attributes, pools, vip, id);
2116 pools->destroy(pools);
2117 }
2118 vip->destroy(vip);
2119 }
2120 this->other_vips->destroy(this->other_vips);
2121 this->peer_addresses->destroy_offset(this->peer_addresses,
2122 offsetof(host_t, destroy));
2123 #ifdef ME
2124 if (this->is_mediation_server)
2125 {
2126 charon->mediation_manager->remove(charon->mediation_manager,
2127 this->ike_sa_id);
2128 }
2129 DESTROY_IF(this->server_reflexive_host);
2130 chunk_free(&this->connect_id);
2131 #endif /* ME */
2132 free(this->nat_detection_dest.ptr);
2133
2134 DESTROY_IF(this->my_host);
2135 DESTROY_IF(this->other_host);
2136 DESTROY_IF(this->my_id);
2137 DESTROY_IF(this->other_id);
2138 DESTROY_IF(this->local_host);
2139 DESTROY_IF(this->remote_host);
2140
2141 DESTROY_IF(this->ike_cfg);
2142 DESTROY_IF(this->peer_cfg);
2143 DESTROY_IF(this->proposal);
2144 this->my_auth->destroy(this->my_auth);
2145 this->other_auth->destroy(this->other_auth);
2146 this->my_auths->destroy_offset(this->my_auths,
2147 offsetof(auth_cfg_t, destroy));
2148 this->other_auths->destroy_offset(this->other_auths,
2149 offsetof(auth_cfg_t, destroy));
2150
2151 this->ike_sa_id->destroy(this->ike_sa_id);
2152 free(this);
2153 }
2154
2155 /*
2156 * Described in header.
2157 */
2158 ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id, bool initiator,
2159 ike_version_t version)
2160 {
2161 private_ike_sa_t *this;
2162 static u_int32_t unique_id = 0;
2163
2164 if (version == IKE_ANY)
2165 { /* prefer IKEv2 if protocol not specified */
2166 #ifdef USE_IKEV2
2167 version = IKEV2;
2168 #else
2169 version = IKEV1;
2170 #endif
2171 }
2172
2173 INIT(this,
2174 .public = {
2175 .get_version = _get_version,
2176 .get_state = _get_state,
2177 .set_state = _set_state,
2178 .get_name = _get_name,
2179 .get_statistic = _get_statistic,
2180 .set_statistic = _set_statistic,
2181 .process_message = _process_message,
2182 .initiate = _initiate,
2183 .retry_initiate = _retry_initiate,
2184 .get_ike_cfg = _get_ike_cfg,
2185 .set_ike_cfg = _set_ike_cfg,
2186 .get_peer_cfg = _get_peer_cfg,
2187 .set_peer_cfg = _set_peer_cfg,
2188 .get_auth_cfg = _get_auth_cfg,
2189 .create_auth_cfg_enumerator = _create_auth_cfg_enumerator,
2190 .add_auth_cfg = _add_auth_cfg,
2191 .get_proposal = _get_proposal,
2192 .set_proposal = _set_proposal,
2193 .get_id = _get_id,
2194 .get_my_host = _get_my_host,
2195 .set_my_host = _set_my_host,
2196 .get_other_host = _get_other_host,
2197 .set_other_host = _set_other_host,
2198 .set_message_id = _set_message_id,
2199 .float_ports = _float_ports,
2200 .update_hosts = _update_hosts,
2201 .get_my_id = _get_my_id,
2202 .set_my_id = _set_my_id,
2203 .get_other_id = _get_other_id,
2204 .set_other_id = _set_other_id,
2205 .get_other_eap_id = _get_other_eap_id,
2206 .enable_extension = _enable_extension,
2207 .supports_extension = _supports_extension,
2208 .set_condition = _set_condition,
2209 .has_condition = _has_condition,
2210 .set_pending_updates = _set_pending_updates,
2211 .get_pending_updates = _get_pending_updates,
2212 .create_peer_address_enumerator = _create_peer_address_enumerator,
2213 .add_peer_address = _add_peer_address,
2214 .clear_peer_addresses = _clear_peer_addresses,
2215 .has_mapping_changed = _has_mapping_changed,
2216 .retransmit = _retransmit,
2217 .delete = _delete_,
2218 .destroy = _destroy,
2219 .send_dpd = _send_dpd,
2220 .send_keepalive = _send_keepalive,
2221 .get_keymat = _get_keymat,
2222 .add_child_sa = _add_child_sa,
2223 .get_child_sa = _get_child_sa,
2224 .get_child_count = _get_child_count,
2225 .create_child_sa_enumerator = _create_child_sa_enumerator,
2226 .remove_child_sa = _remove_child_sa,
2227 .rekey_child_sa = _rekey_child_sa,
2228 .delete_child_sa = _delete_child_sa,
2229 .destroy_child_sa = _destroy_child_sa,
2230 .rekey = _rekey,
2231 .reauth = _reauth,
2232 .reestablish = _reestablish,
2233 .set_auth_lifetime = _set_auth_lifetime,
2234 .roam = _roam,
2235 .inherit = _inherit,
2236 .generate_message = _generate_message,
2237 .reset = _reset,
2238 .get_unique_id = _get_unique_id,
2239 .add_virtual_ip = _add_virtual_ip,
2240 .clear_virtual_ips = _clear_virtual_ips,
2241 .create_virtual_ip_enumerator = _create_virtual_ip_enumerator,
2242 .add_configuration_attribute = _add_configuration_attribute,
2243 .set_kmaddress = _set_kmaddress,
2244 .create_task_enumerator = _create_task_enumerator,
2245 .flush_queue = _flush_queue,
2246 .queue_task = _queue_task,
2247 #ifdef ME
2248 .act_as_mediation_server = _act_as_mediation_server,
2249 .get_server_reflexive_host = _get_server_reflexive_host,
2250 .set_server_reflexive_host = _set_server_reflexive_host,
2251 .get_connect_id = _get_connect_id,
2252 .initiate_mediation = _initiate_mediation,
2253 .initiate_mediated = _initiate_mediated,
2254 .relay = _relay,
2255 .callback = _callback,
2256 .respond = _respond,
2257 #endif /* ME */
2258 },
2259 .ike_sa_id = ike_sa_id->clone(ike_sa_id),
2260 .version = version,
2261 .child_sas = linked_list_create(),
2262 .my_host = host_create_any(AF_INET),
2263 .other_host = host_create_any(AF_INET),
2264 .my_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2265 .other_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2266 .keymat = keymat_create(version, initiator),
2267 .state = IKE_CREATED,
2268 .stats[STAT_INBOUND] = time_monotonic(NULL),
2269 .stats[STAT_OUTBOUND] = time_monotonic(NULL),
2270 .my_auth = auth_cfg_create(),
2271 .other_auth = auth_cfg_create(),
2272 .my_auths = linked_list_create(),
2273 .other_auths = linked_list_create(),
2274 .unique_id = ++unique_id,
2275 .peer_addresses = linked_list_create(),
2276 .my_vips = linked_list_create(),
2277 .other_vips = linked_list_create(),
2278 .attributes = linked_list_create(),
2279 .keepalive_interval = lib->settings->get_time(lib->settings,
2280 "%s.keep_alive", KEEPALIVE_INTERVAL, charon->name),
2281 .retry_initiate_interval = lib->settings->get_time(lib->settings,
2282 "%s.retry_initiate_interval", 0, charon->name),
2283 .flush_auth_cfg = lib->settings->get_bool(lib->settings,
2284 "%s.flush_auth_cfg", FALSE, charon->name),
2285 );
2286
2287 if (version == IKEV2)
2288 { /* always supported with IKEv2 */
2289 enable_extension(this, EXT_DPD);
2290 }
2291
2292 this->task_manager = task_manager_create(&this->public);
2293 this->my_host->set_port(this->my_host,
2294 charon->socket->get_port(charon->socket, FALSE));
2295
2296 if (!this->task_manager || !this->keymat)
2297 {
2298 DBG1(DBG_IKE, "IKE version %d not supported", this->version);
2299 destroy(this);
2300 return NULL;
2301 }
2302 return &this->public;
2303 }
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