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