ike-cfg: remove the to be obsoleted allow any parameter in get_my/other_addr
[strongswan.git] / src / libcharon / sa / ike_sa.c
1 /*
2 * Copyright (C) 2006-2013 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/array.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
99 */
100 auth_cfg_t *my_auth;
101
102 /**
103 * currently used authentication constraints, remote
104 */
105 auth_cfg_t *other_auth;
106
107 /**
108 * Array of completed local authentication rounds (as auth_cfg_t)
109 */
110 array_t *my_auths;
111
112 /**
113 * Array of completed remote authentication rounds (as auth_cfg_t)
114 */
115 array_t *other_auths;
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 * Array containing the child sa's of the current IKE_SA.
176 */
177 array_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 array_t *my_vips;
188
189 /**
190 * Virtual IPs on remote host
191 */
192 array_t *other_vips;
193
194 /**
195 * List of configuration attributes (attribute_entry_t)
196 */
197 array_t *attributes;
198
199 /**
200 * list of peer's addresses, additional ones transmitted via MOBIKE
201 */
202 array_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
286 enumerator = array_create_enumerator(this->child_sas);
287 while (enumerator->enumerate(enumerator, &child_sa))
288 {
289 child_sa->get_usestats(child_sa, inbound, &current, NULL, NULL);
290 use_time = max(use_time, current);
291 }
292 enumerator->destroy(enumerator);
293
294 return use_time;
295 }
296
297 METHOD(ike_sa_t, get_unique_id, u_int32_t,
298 private_ike_sa_t *this)
299 {
300 return this->unique_id;
301 }
302
303 METHOD(ike_sa_t, get_name, char*,
304 private_ike_sa_t *this)
305 {
306 if (this->peer_cfg)
307 {
308 return this->peer_cfg->get_name(this->peer_cfg);
309 }
310 return "(unnamed)";
311 }
312
313 METHOD(ike_sa_t, get_statistic, u_int32_t,
314 private_ike_sa_t *this, statistic_t kind)
315 {
316 if (kind < STAT_MAX)
317 {
318 return this->stats[kind];
319 }
320 return 0;
321 }
322
323 METHOD(ike_sa_t, set_statistic, void,
324 private_ike_sa_t *this, statistic_t kind, u_int32_t value)
325 {
326 if (kind < STAT_MAX)
327 {
328 this->stats[kind] = value;
329 }
330 }
331
332 METHOD(ike_sa_t, get_my_host, host_t*,
333 private_ike_sa_t *this)
334 {
335 return this->my_host;
336 }
337
338 METHOD(ike_sa_t, set_my_host, void,
339 private_ike_sa_t *this, host_t *me)
340 {
341 DESTROY_IF(this->my_host);
342 this->my_host = me;
343 }
344
345 METHOD(ike_sa_t, get_other_host, host_t*,
346 private_ike_sa_t *this)
347 {
348 return this->other_host;
349 }
350
351 METHOD(ike_sa_t, set_other_host, void,
352 private_ike_sa_t *this, host_t *other)
353 {
354 DESTROY_IF(this->other_host);
355 this->other_host = other;
356 }
357
358 METHOD(ike_sa_t, get_peer_cfg, peer_cfg_t*,
359 private_ike_sa_t *this)
360 {
361 return this->peer_cfg;
362 }
363
364 METHOD(ike_sa_t, set_peer_cfg, void,
365 private_ike_sa_t *this, peer_cfg_t *peer_cfg)
366 {
367 peer_cfg->get_ref(peer_cfg);
368 DESTROY_IF(this->peer_cfg);
369 this->peer_cfg = peer_cfg;
370
371 if (this->ike_cfg == NULL)
372 {
373 this->ike_cfg = peer_cfg->get_ike_cfg(peer_cfg);
374 this->ike_cfg->get_ref(this->ike_cfg);
375 }
376 }
377
378 METHOD(ike_sa_t, get_auth_cfg, auth_cfg_t*,
379 private_ike_sa_t *this, bool local)
380 {
381 if (local)
382 {
383 return this->my_auth;
384 }
385 return this->other_auth;
386 }
387
388 METHOD(ike_sa_t, add_auth_cfg, void,
389 private_ike_sa_t *this, bool local, auth_cfg_t *cfg)
390 {
391 if (local)
392 {
393 array_insert(this->my_auths, ARRAY_TAIL, cfg);
394 }
395 else
396 {
397 array_insert(this->other_auths, ARRAY_TAIL, cfg);
398 }
399 }
400
401 METHOD(ike_sa_t, create_auth_cfg_enumerator, enumerator_t*,
402 private_ike_sa_t *this, bool local)
403 {
404 if (local)
405 {
406 return array_create_enumerator(this->my_auths);
407 }
408 return array_create_enumerator(this->other_auths);
409 }
410
411 /**
412 * Flush the stored authentication round information
413 */
414 static void flush_auth_cfgs(private_ike_sa_t *this)
415 {
416 auth_cfg_t *cfg;
417
418 this->my_auth->purge(this->my_auth, FALSE);
419 this->other_auth->purge(this->other_auth, FALSE);
420
421 while (array_remove(this->my_auths, ARRAY_TAIL, &cfg))
422 {
423 cfg->destroy(cfg);
424 }
425 while (array_remove(this->other_auths, ARRAY_TAIL, &cfg))
426 {
427 cfg->destroy(cfg);
428 }
429 }
430
431 METHOD(ike_sa_t, get_proposal, proposal_t*,
432 private_ike_sa_t *this)
433 {
434 return this->proposal;
435 }
436
437 METHOD(ike_sa_t, set_proposal, void,
438 private_ike_sa_t *this, proposal_t *proposal)
439 {
440 DESTROY_IF(this->proposal);
441 this->proposal = proposal->clone(proposal);
442 }
443
444 METHOD(ike_sa_t, set_message_id, void,
445 private_ike_sa_t *this, bool initiate, u_int32_t mid)
446 {
447 if (initiate)
448 {
449 this->task_manager->reset(this->task_manager, mid, UINT_MAX);
450 }
451 else
452 {
453 this->task_manager->reset(this->task_manager, UINT_MAX, mid);
454 }
455 }
456
457 METHOD(ike_sa_t, send_keepalive, void,
458 private_ike_sa_t *this)
459 {
460 send_keepalive_job_t *job;
461 time_t last_out, now, diff;
462
463 if (!(this->conditions & COND_NAT_HERE) || this->keepalive_interval == 0)
464 { /* disable keep alives if we are not NATed anymore */
465 return;
466 }
467
468 last_out = get_use_time(this, FALSE);
469 now = time_monotonic(NULL);
470
471 diff = now - last_out;
472
473 if (diff >= this->keepalive_interval)
474 {
475 packet_t *packet;
476 chunk_t data;
477
478 packet = packet_create();
479 packet->set_source(packet, this->my_host->clone(this->my_host));
480 packet->set_destination(packet, this->other_host->clone(this->other_host));
481 data.ptr = malloc(1);
482 data.ptr[0] = 0xFF;
483 data.len = 1;
484 packet->set_data(packet, data);
485 DBG1(DBG_IKE, "sending keep alive to %#H", this->other_host);
486 charon->sender->send_no_marker(charon->sender, packet);
487 diff = 0;
488 }
489 job = send_keepalive_job_create(this->ike_sa_id);
490 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
491 this->keepalive_interval - diff);
492 }
493
494 METHOD(ike_sa_t, get_ike_cfg, ike_cfg_t*,
495 private_ike_sa_t *this)
496 {
497 return this->ike_cfg;
498 }
499
500 METHOD(ike_sa_t, set_ike_cfg, void,
501 private_ike_sa_t *this, ike_cfg_t *ike_cfg)
502 {
503 ike_cfg->get_ref(ike_cfg);
504 this->ike_cfg = ike_cfg;
505 }
506
507 METHOD(ike_sa_t, enable_extension, void,
508 private_ike_sa_t *this, ike_extension_t extension)
509 {
510 this->extensions |= extension;
511 }
512
513 METHOD(ike_sa_t, supports_extension, bool,
514 private_ike_sa_t *this, ike_extension_t extension)
515 {
516 return (this->extensions & extension) != FALSE;
517 }
518
519 METHOD(ike_sa_t, has_condition, bool,
520 private_ike_sa_t *this, ike_condition_t condition)
521 {
522 return (this->conditions & condition) != FALSE;
523 }
524
525 METHOD(ike_sa_t, set_condition, void,
526 private_ike_sa_t *this, ike_condition_t condition, bool enable)
527 {
528 if (has_condition(this, condition) != enable)
529 {
530 if (enable)
531 {
532 this->conditions |= condition;
533 switch (condition)
534 {
535 case COND_NAT_HERE:
536 DBG1(DBG_IKE, "local host is behind NAT, sending keep alives");
537 this->conditions |= COND_NAT_ANY;
538 send_keepalive(this);
539 break;
540 case COND_NAT_THERE:
541 DBG1(DBG_IKE, "remote host is behind NAT");
542 this->conditions |= COND_NAT_ANY;
543 break;
544 case COND_NAT_FAKE:
545 DBG1(DBG_IKE, "faking NAT situation to enforce UDP encapsulation");
546 this->conditions |= COND_NAT_ANY;
547 break;
548 default:
549 break;
550 }
551 }
552 else
553 {
554 this->conditions &= ~condition;
555 switch (condition)
556 {
557 case COND_NAT_HERE:
558 case COND_NAT_FAKE:
559 case COND_NAT_THERE:
560 set_condition(this, COND_NAT_ANY,
561 has_condition(this, COND_NAT_HERE) ||
562 has_condition(this, COND_NAT_THERE) ||
563 has_condition(this, COND_NAT_FAKE));
564 break;
565 default:
566 break;
567 }
568 }
569 }
570 }
571
572 METHOD(ike_sa_t, send_dpd, status_t,
573 private_ike_sa_t *this)
574 {
575 job_t *job;
576 time_t diff, delay;
577 bool task_queued = FALSE;
578
579 if (this->state == IKE_PASSIVE)
580 {
581 return INVALID_STATE;
582 }
583 delay = this->peer_cfg->get_dpd(this->peer_cfg);
584 if (this->task_manager->busy(this->task_manager))
585 {
586 /* an exchange is in the air, no need to start a DPD check */
587 diff = 0;
588 }
589 else
590 {
591 /* check if there was any inbound traffic */
592 time_t last_in, now;
593 last_in = get_use_time(this, TRUE);
594 now = time_monotonic(NULL);
595 diff = now - last_in;
596 if (!delay || diff >= delay)
597 {
598 /* too long ago, initiate dead peer detection */
599 DBG1(DBG_IKE, "sending DPD request");
600 this->task_manager->queue_dpd(this->task_manager);
601 task_queued = TRUE;
602 diff = 0;
603 }
604 }
605 /* recheck in "interval" seconds */
606 if (delay)
607 {
608 job = (job_t*)send_dpd_job_create(this->ike_sa_id);
609 lib->scheduler->schedule_job(lib->scheduler, job, delay - diff);
610 }
611 if (task_queued)
612 {
613 return this->task_manager->initiate(this->task_manager);
614 }
615 return SUCCESS;
616 }
617
618 METHOD(ike_sa_t, get_state, ike_sa_state_t,
619 private_ike_sa_t *this)
620 {
621 return this->state;
622 }
623
624 METHOD(ike_sa_t, set_state, void,
625 private_ike_sa_t *this, ike_sa_state_t state)
626 {
627 bool trigger_dpd = FALSE;
628
629 DBG2(DBG_IKE, "IKE_SA %s[%d] state change: %N => %N",
630 get_name(this), this->unique_id,
631 ike_sa_state_names, this->state,
632 ike_sa_state_names, state);
633
634 switch (state)
635 {
636 case IKE_ESTABLISHED:
637 {
638 if (this->state == IKE_CONNECTING ||
639 this->state == IKE_PASSIVE)
640 {
641 job_t *job;
642 u_int32_t t;
643
644 /* calculate rekey, reauth and lifetime */
645 this->stats[STAT_ESTABLISHED] = time_monotonic(NULL);
646
647 /* schedule rekeying if we have a time which is smaller than
648 * an already scheduled rekeying */
649 t = this->peer_cfg->get_rekey_time(this->peer_cfg, TRUE);
650 if (t && (this->stats[STAT_REKEY] == 0 ||
651 (this->stats[STAT_REKEY] > t + this->stats[STAT_ESTABLISHED])))
652 {
653 this->stats[STAT_REKEY] = t + this->stats[STAT_ESTABLISHED];
654 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, FALSE);
655 lib->scheduler->schedule_job(lib->scheduler, job, t);
656 DBG1(DBG_IKE, "scheduling rekeying in %ds", t);
657 }
658 t = this->peer_cfg->get_reauth_time(this->peer_cfg, TRUE);
659 if (t && (this->stats[STAT_REAUTH] == 0 ||
660 (this->stats[STAT_REAUTH] > t + this->stats[STAT_ESTABLISHED])))
661 {
662 this->stats[STAT_REAUTH] = t + this->stats[STAT_ESTABLISHED];
663 job = (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE);
664 lib->scheduler->schedule_job(lib->scheduler, job, t);
665 DBG1(DBG_IKE, "scheduling reauthentication in %ds", t);
666 }
667 t = this->peer_cfg->get_over_time(this->peer_cfg);
668 if (this->stats[STAT_REKEY] || this->stats[STAT_REAUTH])
669 {
670 if (this->stats[STAT_REAUTH] == 0)
671 {
672 this->stats[STAT_DELETE] = this->stats[STAT_REKEY];
673 }
674 else if (this->stats[STAT_REKEY] == 0)
675 {
676 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH];
677 }
678 else
679 {
680 this->stats[STAT_DELETE] = min(this->stats[STAT_REKEY],
681 this->stats[STAT_REAUTH]);
682 }
683 this->stats[STAT_DELETE] += t;
684 t = this->stats[STAT_DELETE] - this->stats[STAT_ESTABLISHED];
685 job = (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE);
686 lib->scheduler->schedule_job(lib->scheduler, job, t);
687 DBG1(DBG_IKE, "maximum IKE_SA lifetime %ds", t);
688 }
689 trigger_dpd = this->peer_cfg->get_dpd(this->peer_cfg);
690 }
691 break;
692 }
693 default:
694 break;
695 }
696 charon->bus->ike_state_change(charon->bus, &this->public, state);
697 this->state = state;
698
699 if (trigger_dpd)
700 {
701 if (supports_extension(this, EXT_DPD))
702 {
703 send_dpd(this);
704 }
705 else
706 {
707 DBG1(DBG_IKE, "DPD not supported by peer, disabled");
708 }
709 }
710 }
711
712 METHOD(ike_sa_t, reset, void,
713 private_ike_sa_t *this)
714 {
715 /* the responder ID is reset, as peer may choose another one */
716 if (this->ike_sa_id->is_initiator(this->ike_sa_id))
717 {
718 this->ike_sa_id->set_responder_spi(this->ike_sa_id, 0);
719 }
720
721 set_state(this, IKE_CREATED);
722
723 flush_auth_cfgs(this);
724
725 this->keymat->destroy(this->keymat);
726 this->keymat = keymat_create(this->version,
727 this->ike_sa_id->is_initiator(this->ike_sa_id));
728
729 this->task_manager->reset(this->task_manager, 0, 0);
730 }
731
732 METHOD(ike_sa_t, get_keymat, keymat_t*,
733 private_ike_sa_t *this)
734 {
735 return this->keymat;
736 }
737
738 METHOD(ike_sa_t, add_virtual_ip, void,
739 private_ike_sa_t *this, bool local, host_t *ip)
740 {
741 if (local)
742 {
743 char *iface;
744
745 if (hydra->kernel_interface->get_interface(hydra->kernel_interface,
746 this->my_host, &iface))
747 {
748 DBG1(DBG_IKE, "installing new virtual IP %H", ip);
749 if (hydra->kernel_interface->add_ip(hydra->kernel_interface,
750 ip, -1, iface) == SUCCESS)
751 {
752 array_insert_create(&this->my_vips, ARRAY_TAIL, ip->clone(ip));
753 }
754 else
755 {
756 DBG1(DBG_IKE, "installing virtual IP %H failed", ip);
757 }
758 free(iface);
759 }
760 else
761 {
762 DBG1(DBG_IKE, "looking up interface for virtual IP %H failed", ip);
763 }
764 }
765 else
766 {
767 array_insert_create(&this->other_vips, ARRAY_TAIL, ip->clone(ip));
768 }
769 }
770
771
772 METHOD(ike_sa_t, clear_virtual_ips, void,
773 private_ike_sa_t *this, bool local)
774 {
775 array_t *vips;
776 host_t *vip;
777
778 vips = local ? this->my_vips : this->other_vips;
779 if (!local && array_count(vips))
780 {
781 charon->bus->assign_vips(charon->bus, &this->public, FALSE);
782 }
783 while (array_remove(vips, ARRAY_HEAD, &vip))
784 {
785 if (local)
786 {
787 hydra->kernel_interface->del_ip(hydra->kernel_interface,
788 vip, -1, TRUE);
789 }
790 vip->destroy(vip);
791 }
792 }
793
794 METHOD(ike_sa_t, create_virtual_ip_enumerator, enumerator_t*,
795 private_ike_sa_t *this, bool local)
796 {
797 if (local)
798 {
799 return array_create_enumerator(this->my_vips);
800 }
801 return array_create_enumerator(this->other_vips);
802 }
803
804 METHOD(ike_sa_t, add_peer_address, void,
805 private_ike_sa_t *this, host_t *host)
806 {
807 array_insert_create(&this->peer_addresses, ARRAY_TAIL, host);
808 }
809
810 METHOD(ike_sa_t, create_peer_address_enumerator, enumerator_t*,
811 private_ike_sa_t *this)
812 {
813 if (this->peer_addresses)
814 {
815 return array_create_enumerator(this->peer_addresses);
816 }
817 /* in case we don't have MOBIKE */
818 return enumerator_create_single(this->other_host, NULL);
819 }
820
821 METHOD(ike_sa_t, clear_peer_addresses, void,
822 private_ike_sa_t *this)
823 {
824 array_destroy_offset(this->peer_addresses, offsetof(host_t, destroy));
825 this->peer_addresses = NULL;
826 }
827
828 METHOD(ike_sa_t, has_mapping_changed, bool,
829 private_ike_sa_t *this, chunk_t hash)
830 {
831 if (this->nat_detection_dest.ptr == NULL)
832 {
833 this->nat_detection_dest = chunk_clone(hash);
834 return FALSE;
835 }
836 if (chunk_equals(hash, this->nat_detection_dest))
837 {
838 return FALSE;
839 }
840 free(this->nat_detection_dest.ptr);
841 this->nat_detection_dest = chunk_clone(hash);
842 return TRUE;
843 }
844
845 METHOD(ike_sa_t, set_pending_updates, void,
846 private_ike_sa_t *this, u_int32_t updates)
847 {
848 this->pending_updates = updates;
849 }
850
851 METHOD(ike_sa_t, get_pending_updates, u_int32_t,
852 private_ike_sa_t *this)
853 {
854 return this->pending_updates;
855 }
856
857 METHOD(ike_sa_t, float_ports, void,
858 private_ike_sa_t *this)
859 {
860 /* do not switch if we have a custom port from MOBIKE/NAT */
861 if (this->my_host->get_port(this->my_host) ==
862 charon->socket->get_port(charon->socket, FALSE))
863 {
864 this->my_host->set_port(this->my_host,
865 charon->socket->get_port(charon->socket, TRUE));
866 }
867 if (this->other_host->get_port(this->other_host) == IKEV2_UDP_PORT)
868 {
869 this->other_host->set_port(this->other_host, IKEV2_NATT_PORT);
870 }
871 }
872
873 METHOD(ike_sa_t, update_hosts, void,
874 private_ike_sa_t *this, host_t *me, host_t *other, bool force)
875 {
876 bool update = FALSE;
877
878 if (me == NULL)
879 {
880 me = this->my_host;
881 }
882 if (other == NULL)
883 {
884 other = this->other_host;
885 }
886
887 /* apply hosts on first received message */
888 if (this->my_host->is_anyaddr(this->my_host) ||
889 this->other_host->is_anyaddr(this->other_host))
890 {
891 set_my_host(this, me->clone(me));
892 set_other_host(this, other->clone(other));
893 update = TRUE;
894 }
895 else
896 {
897 /* update our address in any case */
898 if (force && !me->equals(me, this->my_host))
899 {
900 set_my_host(this, me->clone(me));
901 update = TRUE;
902 }
903
904 if (!other->equals(other, this->other_host))
905 {
906 /* update others address if we are NOT NATed */
907 if ((has_condition(this, COND_NAT_THERE) &&
908 !has_condition(this, COND_NAT_HERE)) || force )
909 {
910 set_other_host(this, other->clone(other));
911 update = TRUE;
912 }
913 }
914 }
915
916 /* update all associated CHILD_SAs, if required */
917 if (update)
918 {
919 enumerator_t *enumerator;
920 child_sa_t *child_sa;
921 linked_list_t *vips;
922
923 vips = linked_list_create_from_enumerator(
924 array_create_enumerator(this->my_vips));
925
926 enumerator = array_create_enumerator(this->child_sas);
927 while (enumerator->enumerate(enumerator, &child_sa))
928 {
929 if (child_sa->update(child_sa, this->my_host, this->other_host,
930 vips, has_condition(this, COND_NAT_ANY)) == NOT_SUPPORTED)
931 {
932 this->public.rekey_child_sa(&this->public,
933 child_sa->get_protocol(child_sa),
934 child_sa->get_spi(child_sa, TRUE));
935 }
936 }
937 enumerator->destroy(enumerator);
938
939 vips->destroy(vips);
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 int family = AF_UNSPEC;
1081
1082 switch (charon->socket->supported_families(charon->socket))
1083 {
1084 case SOCKET_FAMILY_IPV4:
1085 family = AF_INET;
1086 break;
1087 case SOCKET_FAMILY_IPV6:
1088 family = AF_INET6;
1089 break;
1090 case SOCKET_FAMILY_BOTH:
1091 case SOCKET_FAMILY_NONE:
1092 break;
1093 }
1094
1095 if (this->remote_host)
1096 {
1097 host = this->remote_host->clone(this->remote_host);
1098 host->set_port(host, IKEV2_UDP_PORT);
1099 }
1100 else
1101 {
1102 host = this->ike_cfg->resolve_other(this->ike_cfg, family);
1103 }
1104 if (host)
1105 {
1106 set_other_host(this, host);
1107 }
1108
1109 if (this->local_host)
1110 {
1111 host = this->local_host->clone(this->local_host);
1112 host->set_port(host, charon->socket->get_port(charon->socket, FALSE));
1113 }
1114 else
1115 {
1116 /* use same address family as for other */
1117 if (!this->other_host->is_anyaddr(this->other_host))
1118 {
1119 family = this->other_host->get_family(this->other_host);
1120 }
1121 host = this->ike_cfg->resolve_me(this->ike_cfg, family);
1122
1123 if (host && host->is_anyaddr(host) &&
1124 !this->other_host->is_anyaddr(this->other_host))
1125 {
1126 host->destroy(host);
1127 host = hydra->kernel_interface->get_source_addr(
1128 hydra->kernel_interface, this->other_host, NULL);
1129 if (host)
1130 {
1131 host->set_port(host, this->ike_cfg->get_my_port(this->ike_cfg));
1132 }
1133 else
1134 { /* fallback to address family specific %any(6), if configured */
1135 host = this->ike_cfg->resolve_me(this->ike_cfg, family);
1136 }
1137 }
1138 }
1139 if (host)
1140 {
1141 set_my_host(this, host);
1142 }
1143 }
1144
1145 METHOD(ike_sa_t, initiate, status_t,
1146 private_ike_sa_t *this, child_cfg_t *child_cfg, u_int32_t reqid,
1147 traffic_selector_t *tsi, traffic_selector_t *tsr)
1148 {
1149 bool defer_initiate = FALSE;
1150
1151 if (this->state == IKE_CREATED)
1152 {
1153 if (this->my_host->is_anyaddr(this->my_host) ||
1154 this->other_host->is_anyaddr(this->other_host))
1155 {
1156 resolve_hosts(this);
1157 }
1158
1159 if (this->other_host->is_anyaddr(this->other_host)
1160 #ifdef ME
1161 && !this->peer_cfg->get_mediated_by(this->peer_cfg)
1162 #endif /* ME */
1163 )
1164 {
1165 bool is_anyaddr;
1166 host_t *host;
1167 char *addr;
1168
1169 addr = this->ike_cfg->get_my_addr(this->ike_cfg);
1170 host = this->ike_cfg->resolve_other(this->ike_cfg, AF_UNSPEC);
1171 is_anyaddr = host && host->is_anyaddr(host);
1172 DESTROY_IF(host);
1173
1174 if (is_anyaddr || !this->retry_initiate_interval)
1175 {
1176 if (is_anyaddr)
1177 {
1178 DBG1(DBG_IKE, "unable to initiate to %s", addr);
1179 }
1180 else
1181 {
1182 DBG1(DBG_IKE, "unable to resolve %s, initiate aborted",
1183 addr);
1184 }
1185 DESTROY_IF(child_cfg);
1186 charon->bus->alert(charon->bus, ALERT_PEER_ADDR_FAILED);
1187 return DESTROY_ME;
1188 }
1189 DBG1(DBG_IKE, "unable to resolve %s, retrying in %ds",
1190 addr, this->retry_initiate_interval);
1191 defer_initiate = TRUE;
1192 }
1193
1194 set_condition(this, COND_ORIGINAL_INITIATOR, TRUE);
1195 this->task_manager->queue_ike(this->task_manager);
1196 }
1197
1198 #ifdef ME
1199 if (this->peer_cfg->is_mediation(this->peer_cfg))
1200 {
1201 if (this->state == IKE_ESTABLISHED)
1202 {
1203 /* mediation connection is already established, retrigger state
1204 * change to notify bus listeners */
1205 DBG1(DBG_IKE, "mediation connection is already up");
1206 set_state(this, IKE_ESTABLISHED);
1207 }
1208 DESTROY_IF(child_cfg);
1209 }
1210 else
1211 #endif /* ME */
1212 if (child_cfg)
1213 {
1214 /* normal IKE_SA with CHILD_SA */
1215 this->task_manager->queue_child(this->task_manager, child_cfg, reqid,
1216 tsi, tsr);
1217 #ifdef ME
1218 if (this->peer_cfg->get_mediated_by(this->peer_cfg))
1219 {
1220 /* mediated connection, initiate mediation process */
1221 job_t *job = (job_t*)initiate_mediation_job_create(this->ike_sa_id);
1222 lib->processor->queue_job(lib->processor, job);
1223 return SUCCESS;
1224 }
1225 #endif /* ME */
1226 }
1227
1228 if (defer_initiate)
1229 {
1230 if (!this->retry_initiate_queued)
1231 {
1232 job_t *job = (job_t*)retry_initiate_job_create(this->ike_sa_id);
1233 lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
1234 this->retry_initiate_interval);
1235 this->retry_initiate_queued = TRUE;
1236 }
1237 return SUCCESS;
1238 }
1239 this->retry_initiate_queued = FALSE;
1240 return this->task_manager->initiate(this->task_manager);
1241 }
1242
1243 METHOD(ike_sa_t, retry_initiate, status_t,
1244 private_ike_sa_t *this)
1245 {
1246 if (this->retry_initiate_queued)
1247 {
1248 this->retry_initiate_queued = FALSE;
1249 return initiate(this, NULL, 0, NULL, NULL);
1250 }
1251 return SUCCESS;
1252 }
1253
1254 METHOD(ike_sa_t, process_message, status_t,
1255 private_ike_sa_t *this, message_t *message)
1256 {
1257 status_t status;
1258
1259 if (this->state == IKE_PASSIVE)
1260 { /* do not handle messages in passive state */
1261 return FAILED;
1262 }
1263 if (message->get_major_version(message) != this->version)
1264 {
1265 DBG1(DBG_IKE, "ignoring %N IKEv%u exchange on %N SA",
1266 exchange_type_names, message->get_exchange_type(message),
1267 message->get_major_version(message),
1268 ike_version_names, this->version);
1269 /* TODO-IKEv1: fall back to IKEv1 if we receive an IKEv1
1270 * INVALID_MAJOR_VERSION on an IKEv2 SA. */
1271 return FAILED;
1272 }
1273 status = this->task_manager->process_message(this->task_manager, message);
1274 if (this->flush_auth_cfg && this->state == IKE_ESTABLISHED)
1275 {
1276 /* authentication completed */
1277 this->flush_auth_cfg = FALSE;
1278 flush_auth_cfgs(this);
1279 }
1280 return status;
1281 }
1282
1283 METHOD(ike_sa_t, get_id, ike_sa_id_t*,
1284 private_ike_sa_t *this)
1285 {
1286 return this->ike_sa_id;
1287 }
1288
1289 METHOD(ike_sa_t, get_version, ike_version_t,
1290 private_ike_sa_t *this)
1291 {
1292 return this->version;
1293 }
1294
1295 METHOD(ike_sa_t, get_my_id, identification_t*,
1296 private_ike_sa_t *this)
1297 {
1298 return this->my_id;
1299 }
1300
1301 METHOD(ike_sa_t, set_my_id, void,
1302 private_ike_sa_t *this, identification_t *me)
1303 {
1304 DESTROY_IF(this->my_id);
1305 this->my_id = me;
1306 }
1307
1308 METHOD(ike_sa_t, get_other_id, identification_t*,
1309 private_ike_sa_t *this)
1310 {
1311 return this->other_id;
1312 }
1313
1314 METHOD(ike_sa_t, get_other_eap_id, identification_t*,
1315 private_ike_sa_t *this)
1316 {
1317 identification_t *id = NULL, *current;
1318 enumerator_t *enumerator;
1319 auth_cfg_t *cfg;
1320
1321 enumerator = array_create_enumerator(this->other_auths);
1322 while (enumerator->enumerate(enumerator, &cfg))
1323 {
1324 /* prefer EAP-Identity of last round */
1325 current = cfg->get(cfg, AUTH_RULE_EAP_IDENTITY);
1326 if (!current || current->get_type(current) == ID_ANY)
1327 {
1328 current = cfg->get(cfg, AUTH_RULE_XAUTH_IDENTITY);
1329 }
1330 if (!current || current->get_type(current) == ID_ANY)
1331 {
1332 current = cfg->get(cfg, AUTH_RULE_IDENTITY);
1333 }
1334 if (current && current->get_type(current) != ID_ANY)
1335 {
1336 id = current;
1337 continue;
1338 }
1339 }
1340 enumerator->destroy(enumerator);
1341 if (id)
1342 {
1343 return id;
1344 }
1345 return this->other_id;
1346 }
1347
1348 METHOD(ike_sa_t, set_other_id, void,
1349 private_ike_sa_t *this, identification_t *other)
1350 {
1351 DESTROY_IF(this->other_id);
1352 this->other_id = other;
1353 }
1354
1355 METHOD(ike_sa_t, add_child_sa, void,
1356 private_ike_sa_t *this, child_sa_t *child_sa)
1357 {
1358 array_insert_create(&this->child_sas, ARRAY_TAIL, child_sa);
1359 }
1360
1361 METHOD(ike_sa_t, get_child_sa, child_sa_t*,
1362 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool inbound)
1363 {
1364 enumerator_t *enumerator;
1365 child_sa_t *current, *found = NULL;
1366
1367 enumerator = array_create_enumerator(this->child_sas);
1368 while (enumerator->enumerate(enumerator, (void**)&current))
1369 {
1370 if (current->get_spi(current, inbound) == spi &&
1371 current->get_protocol(current) == protocol)
1372 {
1373 found = current;
1374 }
1375 }
1376 enumerator->destroy(enumerator);
1377 return found;
1378 }
1379
1380 METHOD(ike_sa_t, get_child_count, int,
1381 private_ike_sa_t *this)
1382 {
1383 return array_count(this->child_sas);
1384 }
1385
1386 METHOD(ike_sa_t, create_child_sa_enumerator, enumerator_t*,
1387 private_ike_sa_t *this)
1388 {
1389 return array_create_enumerator(this->child_sas);
1390 }
1391
1392 METHOD(ike_sa_t, remove_child_sa, void,
1393 private_ike_sa_t *this, enumerator_t *enumerator)
1394 {
1395 array_remove_at(this->child_sas, enumerator);
1396 }
1397
1398 METHOD(ike_sa_t, rekey_child_sa, status_t,
1399 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1400 {
1401 if (this->state == IKE_PASSIVE)
1402 {
1403 return INVALID_STATE;
1404 }
1405 this->task_manager->queue_child_rekey(this->task_manager, protocol, spi);
1406 return this->task_manager->initiate(this->task_manager);
1407 }
1408
1409 METHOD(ike_sa_t, delete_child_sa, status_t,
1410 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi, bool expired)
1411 {
1412 if (this->state == IKE_PASSIVE)
1413 {
1414 return INVALID_STATE;
1415 }
1416 this->task_manager->queue_child_delete(this->task_manager,
1417 protocol, spi, expired);
1418 return this->task_manager->initiate(this->task_manager);
1419 }
1420
1421 METHOD(ike_sa_t, destroy_child_sa, status_t,
1422 private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
1423 {
1424 enumerator_t *enumerator;
1425 child_sa_t *child_sa;
1426 status_t status = NOT_FOUND;
1427
1428 enumerator = array_create_enumerator(this->child_sas);
1429 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1430 {
1431 if (child_sa->get_protocol(child_sa) == protocol &&
1432 child_sa->get_spi(child_sa, TRUE) == spi)
1433 {
1434 array_remove_at(this->child_sas, enumerator);
1435 child_sa->destroy(child_sa);
1436 status = SUCCESS;
1437 break;
1438 }
1439 }
1440 enumerator->destroy(enumerator);
1441 return status;
1442 }
1443
1444 METHOD(ike_sa_t, delete_, status_t,
1445 private_ike_sa_t *this)
1446 {
1447 switch (this->state)
1448 {
1449 case IKE_REKEYING:
1450 if (this->version == IKEV1)
1451 { /* SA has been reauthenticated, delete */
1452 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1453 break;
1454 }
1455 /* FALL */
1456 case IKE_ESTABLISHED:
1457 if (time_monotonic(NULL) >= this->stats[STAT_DELETE])
1458 { /* IKE_SA hard lifetime hit */
1459 charon->bus->alert(charon->bus, ALERT_IKE_SA_EXPIRED);
1460 }
1461 this->task_manager->queue_ike_delete(this->task_manager);
1462 return this->task_manager->initiate(this->task_manager);
1463 case IKE_CREATED:
1464 DBG1(DBG_IKE, "deleting unestablished IKE_SA");
1465 break;
1466 case IKE_PASSIVE:
1467 break;
1468 default:
1469 DBG1(DBG_IKE, "destroying IKE_SA in state %N "
1470 "without notification", ike_sa_state_names, this->state);
1471 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1472 break;
1473 }
1474 return DESTROY_ME;
1475 }
1476
1477 METHOD(ike_sa_t, rekey, status_t,
1478 private_ike_sa_t *this)
1479 {
1480 if (this->state == IKE_PASSIVE)
1481 {
1482 return INVALID_STATE;
1483 }
1484 this->task_manager->queue_ike_rekey(this->task_manager);
1485 return this->task_manager->initiate(this->task_manager);
1486 }
1487
1488 METHOD(ike_sa_t, reauth, status_t,
1489 private_ike_sa_t *this)
1490 {
1491 if (this->state == IKE_PASSIVE)
1492 {
1493 return INVALID_STATE;
1494 }
1495 /* we can't reauthenticate as responder when we use EAP or virtual IPs.
1496 * If the peer does not support RFC4478, there is no way to keep the
1497 * IKE_SA up. */
1498 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1499 {
1500 DBG1(DBG_IKE, "initiator did not reauthenticate as requested");
1501 if (array_count(this->other_vips) != 0 ||
1502 has_condition(this, COND_XAUTH_AUTHENTICATED) ||
1503 has_condition(this, COND_EAP_AUTHENTICATED)
1504 #ifdef ME
1505 /* as mediation server we too cannot reauth the IKE_SA */
1506 || this->is_mediation_server
1507 #endif /* ME */
1508 )
1509 {
1510 time_t del, now;
1511
1512 del = this->stats[STAT_DELETE];
1513 now = time_monotonic(NULL);
1514 DBG1(DBG_IKE, "IKE_SA %s[%d] will timeout in %V",
1515 get_name(this), this->unique_id, &now, &del);
1516 return FAILED;
1517 }
1518 else
1519 {
1520 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d] actively",
1521 get_name(this), this->unique_id);
1522 }
1523 }
1524 else
1525 {
1526 DBG0(DBG_IKE, "reauthenticating IKE_SA %s[%d]",
1527 get_name(this), this->unique_id);
1528 }
1529 set_condition(this, COND_REAUTHENTICATING, TRUE);
1530 this->task_manager->queue_ike_reauth(this->task_manager);
1531 return this->task_manager->initiate(this->task_manager);
1532 }
1533
1534 /**
1535 * Check if tasks to create CHILD_SAs are queued in the given queue
1536 */
1537 static bool is_child_queued(private_ike_sa_t *this, task_queue_t queue)
1538 {
1539 enumerator_t *enumerator;
1540 task_t *task;
1541 bool found = FALSE;
1542
1543 enumerator = this->task_manager->create_task_enumerator(this->task_manager,
1544 queue);
1545 while (enumerator->enumerate(enumerator, &task))
1546 {
1547 if (task->get_type(task) == TASK_CHILD_CREATE ||
1548 task->get_type(task) == TASK_QUICK_MODE)
1549 {
1550 found = TRUE;
1551 break;
1552 }
1553 }
1554 enumerator->destroy(enumerator);
1555 return found;
1556 }
1557
1558 METHOD(ike_sa_t, reestablish, status_t,
1559 private_ike_sa_t *this)
1560 {
1561 ike_sa_t *new;
1562 host_t *host;
1563 action_t action;
1564 enumerator_t *enumerator;
1565 child_sa_t *child_sa;
1566 child_cfg_t *child_cfg;
1567 bool restart = FALSE;
1568 status_t status = FAILED;
1569
1570 if (has_condition(this, COND_REAUTHENTICATING))
1571 { /* only reauthenticate if we have children */
1572 if (array_count(this->child_sas) == 0
1573 #ifdef ME
1574 /* allow reauth of mediation connections without CHILD_SAs */
1575 && !this->peer_cfg->is_mediation(this->peer_cfg)
1576 #endif /* ME */
1577 )
1578 {
1579 DBG1(DBG_IKE, "unable to reauthenticate IKE_SA, no CHILD_SA "
1580 "to recreate");
1581 }
1582 else
1583 {
1584 restart = TRUE;
1585 }
1586 }
1587 else
1588 { /* check if we have children to keep up at all */
1589 enumerator = array_create_enumerator(this->child_sas);
1590 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1591 {
1592 if (this->state == IKE_DELETING)
1593 {
1594 action = child_sa->get_close_action(child_sa);
1595 }
1596 else
1597 {
1598 action = child_sa->get_dpd_action(child_sa);
1599 }
1600 switch (action)
1601 {
1602 case ACTION_RESTART:
1603 restart = TRUE;
1604 break;
1605 case ACTION_ROUTE:
1606 charon->traps->install(charon->traps, this->peer_cfg,
1607 child_sa->get_config(child_sa),
1608 child_sa->get_reqid(child_sa));
1609 break;
1610 default:
1611 break;
1612 }
1613 }
1614 enumerator->destroy(enumerator);
1615 /* check if we have tasks that recreate children */
1616 if (!restart)
1617 {
1618 restart = is_child_queued(this, TASK_QUEUE_ACTIVE) ||
1619 is_child_queued(this, TASK_QUEUE_QUEUED);
1620 }
1621 #ifdef ME
1622 /* mediation connections have no children, keep them up anyway */
1623 if (this->peer_cfg->is_mediation(this->peer_cfg))
1624 {
1625 restart = TRUE;
1626 }
1627 #endif /* ME */
1628 }
1629 if (!restart)
1630 {
1631 return FAILED;
1632 }
1633
1634 /* check if we are able to reestablish this IKE_SA */
1635 if (!has_condition(this, COND_ORIGINAL_INITIATOR) &&
1636 (array_count(this->other_vips) != 0 ||
1637 has_condition(this, COND_EAP_AUTHENTICATED)
1638 #ifdef ME
1639 || this->is_mediation_server
1640 #endif /* ME */
1641 ))
1642 {
1643 DBG1(DBG_IKE, "unable to reestablish IKE_SA due to asymmetric setup");
1644 return FAILED;
1645 }
1646
1647 new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager,
1648 this->version, TRUE);
1649 if (!new)
1650 {
1651 return FAILED;
1652 }
1653 new->set_peer_cfg(new, this->peer_cfg);
1654 host = this->other_host;
1655 new->set_other_host(new, host->clone(host));
1656 host = this->my_host;
1657 new->set_my_host(new, host->clone(host));
1658 /* if we already have a virtual IP, we reuse it */
1659 enumerator = array_create_enumerator(this->my_vips);
1660 while (enumerator->enumerate(enumerator, &host))
1661 {
1662 new->add_virtual_ip(new, TRUE, host);
1663 }
1664 enumerator->destroy(enumerator);
1665
1666 #ifdef ME
1667 if (this->peer_cfg->is_mediation(this->peer_cfg))
1668 {
1669 status = new->initiate(new, NULL, 0, NULL, NULL);
1670 }
1671 else
1672 #endif /* ME */
1673 {
1674 /* handle existing CHILD_SAs */
1675 enumerator = array_create_enumerator(this->child_sas);
1676 while (enumerator->enumerate(enumerator, (void**)&child_sa))
1677 {
1678 if (has_condition(this, COND_REAUTHENTICATING))
1679 {
1680 switch (child_sa->get_state(child_sa))
1681 {
1682 case CHILD_ROUTED:
1683 { /* move routed child directly */
1684 array_remove_at(this->child_sas, enumerator);
1685 new->add_child_sa(new, child_sa);
1686 action = ACTION_NONE;
1687 break;
1688 }
1689 default:
1690 { /* initiate/queue all other CHILD_SAs */
1691 action = ACTION_RESTART;
1692 break;
1693 }
1694 }
1695 }
1696 else
1697 { /* only restart CHILD_SAs that are configured accordingly */
1698 if (this->state == IKE_DELETING)
1699 {
1700 action = child_sa->get_close_action(child_sa);
1701 }
1702 else
1703 {
1704 action = child_sa->get_dpd_action(child_sa);
1705 }
1706 }
1707 switch (action)
1708 {
1709 case ACTION_RESTART:
1710 child_cfg = child_sa->get_config(child_sa);
1711 DBG1(DBG_IKE, "restarting CHILD_SA %s",
1712 child_cfg->get_name(child_cfg));
1713 child_cfg->get_ref(child_cfg);
1714 status = new->initiate(new, child_cfg,
1715 child_sa->get_reqid(child_sa), NULL, NULL);
1716 break;
1717 default:
1718 continue;
1719 }
1720 if (status == DESTROY_ME)
1721 {
1722 break;
1723 }
1724 }
1725 enumerator->destroy(enumerator);
1726 /* adopt any active or queued CHILD-creating tasks */
1727 if (status != DESTROY_ME)
1728 {
1729 task_manager_t *other_tasks = ((private_ike_sa_t*)new)->task_manager;
1730 other_tasks->adopt_child_tasks(other_tasks, this->task_manager);
1731 if (new->get_state(new) == IKE_CREATED)
1732 {
1733 status = new->initiate(new, NULL, 0, NULL, NULL);
1734 }
1735 }
1736 }
1737
1738 if (status == DESTROY_ME)
1739 {
1740 charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, new);
1741 status = FAILED;
1742 }
1743 else
1744 {
1745 charon->bus->ike_reestablish(charon->bus, &this->public, new);
1746 charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
1747 status = SUCCESS;
1748 }
1749 charon->bus->set_sa(charon->bus, &this->public);
1750 return status;
1751 }
1752
1753 METHOD(ike_sa_t, retransmit, status_t,
1754 private_ike_sa_t *this, u_int32_t message_id)
1755 {
1756 if (this->state == IKE_PASSIVE)
1757 {
1758 return INVALID_STATE;
1759 }
1760 this->stats[STAT_OUTBOUND] = time_monotonic(NULL);
1761 if (this->task_manager->retransmit(this->task_manager, message_id) != SUCCESS)
1762 {
1763 /* send a proper signal to brief interested bus listeners */
1764 switch (this->state)
1765 {
1766 case IKE_CONNECTING:
1767 {
1768 /* retry IKE_SA_INIT/Main Mode if we have multiple keyingtries */
1769 u_int32_t tries = this->peer_cfg->get_keyingtries(this->peer_cfg);
1770 charon->bus->alert(charon->bus, ALERT_PEER_INIT_UNREACHABLE,
1771 this->keyingtry);
1772 this->keyingtry++;
1773 if (tries == 0 || tries > this->keyingtry)
1774 {
1775 DBG1(DBG_IKE, "peer not responding, trying again (%d/%d)",
1776 this->keyingtry + 1, tries);
1777 reset(this);
1778 resolve_hosts(this);
1779 this->task_manager->queue_ike(this->task_manager);
1780 return this->task_manager->initiate(this->task_manager);
1781 }
1782 DBG1(DBG_IKE, "establishing IKE_SA failed, peer not responding");
1783 break;
1784 }
1785 case IKE_DELETING:
1786 DBG1(DBG_IKE, "proper IKE_SA delete failed, peer not responding");
1787 if (has_condition(this, COND_REAUTHENTICATING))
1788 {
1789 DBG1(DBG_IKE, "delete during reauthentication failed, "
1790 "trying to reestablish IKE_SA anyway");
1791 reestablish(this);
1792 }
1793 break;
1794 case IKE_REKEYING:
1795 DBG1(DBG_IKE, "rekeying IKE_SA failed, peer not responding");
1796 /* FALL */
1797 default:
1798 reestablish(this);
1799 break;
1800 }
1801 if (this->state != IKE_CONNECTING)
1802 {
1803 charon->bus->ike_updown(charon->bus, &this->public, FALSE);
1804 }
1805 return DESTROY_ME;
1806 }
1807 return SUCCESS;
1808 }
1809
1810 METHOD(ike_sa_t, set_auth_lifetime, status_t,
1811 private_ike_sa_t *this, u_int32_t lifetime)
1812 {
1813 u_int32_t diff, hard, soft, now;
1814 bool send_update;
1815
1816 diff = this->peer_cfg->get_over_time(this->peer_cfg);
1817 now = time_monotonic(NULL);
1818 hard = now + lifetime;
1819 soft = hard - diff;
1820
1821 /* check if we have to send an AUTH_LIFETIME to enforce the new lifetime.
1822 * We send the notify in IKE_AUTH if not yet ESTABLISHED. */
1823 send_update = this->state == IKE_ESTABLISHED && this->version == IKEV2 &&
1824 !has_condition(this, COND_ORIGINAL_INITIATOR) &&
1825 (array_count(this->other_vips) != 0 ||
1826 has_condition(this, COND_EAP_AUTHENTICATED));
1827
1828 if (lifetime < diff)
1829 {
1830 this->stats[STAT_REAUTH] = now;
1831
1832 if (!send_update)
1833 {
1834 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1835 "starting reauthentication", lifetime);
1836 lib->processor->queue_job(lib->processor,
1837 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE));
1838 }
1839 }
1840 else if (this->stats[STAT_REAUTH] == 0 ||
1841 this->stats[STAT_REAUTH] > soft)
1842 {
1843 this->stats[STAT_REAUTH] = soft;
1844 if (!send_update)
1845 {
1846 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, scheduling "
1847 "reauthentication in %ds", lifetime, lifetime - diff);
1848 lib->scheduler->schedule_job(lib->scheduler,
1849 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE),
1850 lifetime - diff);
1851 }
1852 }
1853 else
1854 {
1855 DBG1(DBG_IKE, "received AUTH_LIFETIME of %ds, "
1856 "reauthentication already scheduled in %ds", lifetime,
1857 this->stats[STAT_REAUTH] - time_monotonic(NULL));
1858 send_update = FALSE;
1859 }
1860 /* give at least some seconds to reauthenticate */
1861 this->stats[STAT_DELETE] = max(hard, now + 10);
1862
1863 #ifdef USE_IKEV2
1864 if (send_update)
1865 {
1866 ike_auth_lifetime_t *task;
1867
1868 task = ike_auth_lifetime_create(&this->public, TRUE);
1869 this->task_manager->queue_task(this->task_manager, &task->task);
1870 return this->task_manager->initiate(this->task_manager);
1871 }
1872 #endif
1873 return SUCCESS;
1874 }
1875
1876 /**
1877 * Check if the current combination of source and destination address is still
1878 * valid.
1879 */
1880 static bool is_current_path_valid(private_ike_sa_t *this)
1881 {
1882 bool valid = FALSE;
1883 host_t *src;
1884 src = hydra->kernel_interface->get_source_addr(hydra->kernel_interface,
1885 this->other_host, this->my_host);
1886 if (src)
1887 {
1888 if (src->ip_equals(src, this->my_host))
1889 {
1890 valid = TRUE;
1891 }
1892 src->destroy(src);
1893 }
1894 return valid;
1895 }
1896
1897 /**
1898 * Check if we have any path avialable for this IKE SA.
1899 */
1900 static bool is_any_path_valid(private_ike_sa_t *this)
1901 {
1902 bool valid = FALSE;
1903 enumerator_t *enumerator;
1904 host_t *src = NULL, *addr;
1905
1906 DBG1(DBG_IKE, "old path is not available anymore, try to find another");
1907 enumerator = create_peer_address_enumerator(this);
1908 while (enumerator->enumerate(enumerator, &addr))
1909 {
1910 DBG1(DBG_IKE, "looking for a route to %H ...", addr);
1911 src = hydra->kernel_interface->get_source_addr(
1912 hydra->kernel_interface, addr, NULL);
1913 if (src)
1914 {
1915 break;
1916 }
1917 }
1918 enumerator->destroy(enumerator);
1919 if (src)
1920 {
1921 valid = TRUE;
1922 src->destroy(src);
1923 }
1924 return valid;
1925 }
1926
1927 METHOD(ike_sa_t, roam, status_t,
1928 private_ike_sa_t *this, bool address)
1929 {
1930 switch (this->state)
1931 {
1932 case IKE_CREATED:
1933 case IKE_DELETING:
1934 case IKE_DESTROYING:
1935 case IKE_PASSIVE:
1936 return SUCCESS;
1937 default:
1938 break;
1939 }
1940
1941 /* keep existing path if possible */
1942 if (is_current_path_valid(this))
1943 {
1944 DBG2(DBG_IKE, "keeping connection path %H - %H",
1945 this->my_host, this->other_host);
1946 set_condition(this, COND_STALE, FALSE);
1947
1948 if (supports_extension(this, EXT_MOBIKE) && address)
1949 { /* if any addresses changed, send an updated list */
1950 DBG1(DBG_IKE, "sending address list update using MOBIKE");
1951 this->task_manager->queue_mobike(this->task_manager, FALSE, TRUE);
1952 return this->task_manager->initiate(this->task_manager);
1953 }
1954 return SUCCESS;
1955 }
1956
1957 if (!is_any_path_valid(this))
1958 {
1959 DBG1(DBG_IKE, "no route found to reach %H, MOBIKE update deferred",
1960 this->other_host);
1961 set_condition(this, COND_STALE, TRUE);
1962 return SUCCESS;
1963 }
1964 set_condition(this, COND_STALE, FALSE);
1965
1966 /* update addresses with mobike, if supported ... */
1967 if (supports_extension(this, EXT_MOBIKE))
1968 {
1969 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1970 { /* responder updates the peer about changed address config */
1971 DBG1(DBG_IKE, "sending address list update using MOBIKE, "
1972 "implicitly requesting an address change");
1973 address = TRUE;
1974 }
1975 else
1976 {
1977 DBG1(DBG_IKE, "requesting address change using MOBIKE");
1978 }
1979 this->task_manager->queue_mobike(this->task_manager, TRUE, address);
1980 return this->task_manager->initiate(this->task_manager);
1981 }
1982
1983 /* ... reauth if not */
1984 if (!has_condition(this, COND_ORIGINAL_INITIATOR))
1985 { /* responder does not reauthenticate */
1986 set_condition(this, COND_STALE, TRUE);
1987 return SUCCESS;
1988 }
1989 DBG1(DBG_IKE, "reauthenticating IKE_SA due to address change");
1990 /* since our previous path is not valid anymore, try and find a new one */
1991 resolve_hosts(this);
1992 return reauth(this);
1993 }
1994
1995 METHOD(ike_sa_t, add_configuration_attribute, void,
1996 private_ike_sa_t *this, attribute_handler_t *handler,
1997 configuration_attribute_type_t type, chunk_t data)
1998 {
1999 attribute_entry_t entry = {
2000 .handler = handler,
2001 .type = type,
2002 .data = chunk_clone(data),
2003 };
2004 array_insert(this->attributes, ARRAY_TAIL, &entry);
2005 }
2006
2007 METHOD(ike_sa_t, create_task_enumerator, enumerator_t*,
2008 private_ike_sa_t *this, task_queue_t queue)
2009 {
2010 return this->task_manager->create_task_enumerator(this->task_manager, queue);
2011 }
2012
2013 METHOD(ike_sa_t, flush_queue, void,
2014 private_ike_sa_t *this, task_queue_t queue)
2015 {
2016 this->task_manager->flush_queue(this->task_manager, queue);
2017 }
2018
2019 METHOD(ike_sa_t, queue_task, void,
2020 private_ike_sa_t *this, task_t *task)
2021 {
2022 this->task_manager->queue_task(this->task_manager, task);
2023 }
2024
2025 METHOD(ike_sa_t, inherit, void,
2026 private_ike_sa_t *this, ike_sa_t *other_public)
2027 {
2028 private_ike_sa_t *other = (private_ike_sa_t*)other_public;
2029 child_sa_t *child_sa;
2030 enumerator_t *enumerator;
2031 attribute_entry_t entry;
2032 auth_cfg_t *cfg;
2033 host_t *vip;
2034
2035 /* apply hosts and ids */
2036 this->my_host->destroy(this->my_host);
2037 this->other_host->destroy(this->other_host);
2038 this->my_id->destroy(this->my_id);
2039 this->other_id->destroy(this->other_id);
2040 this->my_host = other->my_host->clone(other->my_host);
2041 this->other_host = other->other_host->clone(other->other_host);
2042 this->my_id = other->my_id->clone(other->my_id);
2043 this->other_id = other->other_id->clone(other->other_id);
2044
2045 /* apply assigned virtual IPs... */
2046 while (array_remove(other->my_vips, ARRAY_HEAD, &vip))
2047 {
2048 array_insert_create(&this->my_vips, ARRAY_TAIL, vip);
2049 }
2050 while (array_remove(other->other_vips, ARRAY_HEAD, &vip))
2051 {
2052 array_insert_create(&this->other_vips, ARRAY_TAIL, vip);
2053 }
2054
2055 /* authentication information */
2056 enumerator = array_create_enumerator(other->my_auths);
2057 while (enumerator->enumerate(enumerator, &cfg))
2058 {
2059 array_insert(this->my_auths, ARRAY_TAIL, cfg->clone(cfg));
2060 }
2061 enumerator->destroy(enumerator);
2062 enumerator = array_create_enumerator(other->other_auths);
2063 while (enumerator->enumerate(enumerator, &cfg))
2064 {
2065 array_insert(this->other_auths, ARRAY_TAIL, cfg->clone(cfg));
2066 }
2067 enumerator->destroy(enumerator);
2068
2069 /* ... and configuration attributes */
2070 while (array_remove(other->attributes, ARRAY_HEAD, &entry))
2071 {
2072 array_insert(this->attributes, ARRAY_TAIL, &entry);
2073 }
2074
2075 /* inherit all conditions */
2076 this->conditions = other->conditions;
2077 if (this->conditions & COND_NAT_HERE)
2078 {
2079 send_keepalive(this);
2080 }
2081
2082 #ifdef ME
2083 if (other->is_mediation_server)
2084 {
2085 act_as_mediation_server(this);
2086 }
2087 else if (other->server_reflexive_host)
2088 {
2089 this->server_reflexive_host = other->server_reflexive_host->clone(
2090 other->server_reflexive_host);
2091 }
2092 #endif /* ME */
2093
2094 /* adopt all children */
2095 while (array_remove(other->child_sas, ARRAY_HEAD, &child_sa))
2096 {
2097 array_insert_create(&this->child_sas, ARRAY_TAIL, child_sa);
2098 }
2099
2100 /* move pending tasks to the new IKE_SA */
2101 this->task_manager->adopt_tasks(this->task_manager, other->task_manager);
2102
2103 /* reauthentication timeout survives a rekeying */
2104 if (other->stats[STAT_REAUTH])
2105 {
2106 time_t reauth, delete, now = time_monotonic(NULL);
2107
2108 this->stats[STAT_REAUTH] = other->stats[STAT_REAUTH];
2109 reauth = this->stats[STAT_REAUTH] - now;
2110 delete = reauth + this->peer_cfg->get_over_time(this->peer_cfg);
2111 this->stats[STAT_DELETE] = this->stats[STAT_REAUTH] + delete;
2112 DBG1(DBG_IKE, "rescheduling reauthentication in %ds after rekeying, "
2113 "lifetime reduced to %ds", reauth, delete);
2114 lib->scheduler->schedule_job(lib->scheduler,
2115 (job_t*)rekey_ike_sa_job_create(this->ike_sa_id, TRUE), reauth);
2116 lib->scheduler->schedule_job(lib->scheduler,
2117 (job_t*)delete_ike_sa_job_create(this->ike_sa_id, TRUE), delete);
2118 }
2119 }
2120
2121 METHOD(ike_sa_t, destroy, void,
2122 private_ike_sa_t *this)
2123 {
2124 attribute_entry_t entry;
2125 child_sa_t *child_sa;
2126 host_t *vip;
2127
2128 charon->bus->set_sa(charon->bus, &this->public);
2129
2130 set_state(this, IKE_DESTROYING);
2131 DESTROY_IF(this->task_manager);
2132
2133 /* remove attributes first, as we pass the IKE_SA to the handler */
2134 while (array_remove(this->attributes, ARRAY_TAIL, &entry))
2135 {
2136 hydra->attributes->release(hydra->attributes, entry.handler,
2137 this->other_id, entry.type, entry.data);
2138 free(entry.data.ptr);
2139 }
2140 /* uninstall CHILD_SAs before virtual IPs, otherwise we might kill
2141 * routes that the CHILD_SA tries to uninstall. */
2142 while (array_remove(this->child_sas, ARRAY_TAIL, &child_sa))
2143 {
2144 child_sa->destroy(child_sa);
2145 }
2146 while (array_remove(this->my_vips, ARRAY_TAIL, &vip))
2147 {
2148 hydra->kernel_interface->del_ip(hydra->kernel_interface, vip, -1, TRUE);
2149 vip->destroy(vip);
2150 }
2151 if (array_count(this->other_vips))
2152 {
2153 charon->bus->assign_vips(charon->bus, &this->public, FALSE);
2154 }
2155 while (array_remove(this->other_vips, ARRAY_TAIL, &vip))
2156 {
2157 if (this->peer_cfg)
2158 {
2159 linked_list_t *pools;
2160 identification_t *id;
2161
2162 id = get_other_eap_id(this);
2163 pools = linked_list_create_from_enumerator(
2164 this->peer_cfg->create_pool_enumerator(this->peer_cfg));
2165 hydra->attributes->release_address(hydra->attributes, pools, vip, id);
2166 pools->destroy(pools);
2167 }
2168 vip->destroy(vip);
2169 }
2170
2171 /* unset SA after here to avoid usage by the listeners */
2172 charon->bus->set_sa(charon->bus, NULL);
2173
2174 array_destroy(this->child_sas);
2175 DESTROY_IF(this->keymat);
2176 array_destroy(this->attributes);
2177 array_destroy(this->my_vips);
2178 array_destroy(this->other_vips);
2179 array_destroy_offset(this->peer_addresses, offsetof(host_t, destroy));
2180 #ifdef ME
2181 if (this->is_mediation_server)
2182 {
2183 charon->mediation_manager->remove(charon->mediation_manager,
2184 this->ike_sa_id);
2185 }
2186 DESTROY_IF(this->server_reflexive_host);
2187 chunk_free(&this->connect_id);
2188 #endif /* ME */
2189 free(this->nat_detection_dest.ptr);
2190
2191 DESTROY_IF(this->my_host);
2192 DESTROY_IF(this->other_host);
2193 DESTROY_IF(this->my_id);
2194 DESTROY_IF(this->other_id);
2195 DESTROY_IF(this->local_host);
2196 DESTROY_IF(this->remote_host);
2197
2198 DESTROY_IF(this->ike_cfg);
2199 DESTROY_IF(this->peer_cfg);
2200 DESTROY_IF(this->proposal);
2201 this->my_auth->destroy(this->my_auth);
2202 this->other_auth->destroy(this->other_auth);
2203 array_destroy_offset(this->my_auths, offsetof(auth_cfg_t, destroy));
2204 array_destroy_offset(this->other_auths, offsetof(auth_cfg_t, destroy));
2205
2206 this->ike_sa_id->destroy(this->ike_sa_id);
2207 free(this);
2208 }
2209
2210 /*
2211 * Described in header.
2212 */
2213 ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id, bool initiator,
2214 ike_version_t version)
2215 {
2216 private_ike_sa_t *this;
2217 static refcount_t unique_id = 0;
2218
2219 if (version == IKE_ANY)
2220 { /* prefer IKEv2 if protocol not specified */
2221 #ifdef USE_IKEV2
2222 version = IKEV2;
2223 #else
2224 version = IKEV1;
2225 #endif
2226 }
2227
2228 INIT(this,
2229 .public = {
2230 .get_version = _get_version,
2231 .get_state = _get_state,
2232 .set_state = _set_state,
2233 .get_name = _get_name,
2234 .get_statistic = _get_statistic,
2235 .set_statistic = _set_statistic,
2236 .process_message = _process_message,
2237 .initiate = _initiate,
2238 .retry_initiate = _retry_initiate,
2239 .get_ike_cfg = _get_ike_cfg,
2240 .set_ike_cfg = _set_ike_cfg,
2241 .get_peer_cfg = _get_peer_cfg,
2242 .set_peer_cfg = _set_peer_cfg,
2243 .get_auth_cfg = _get_auth_cfg,
2244 .create_auth_cfg_enumerator = _create_auth_cfg_enumerator,
2245 .add_auth_cfg = _add_auth_cfg,
2246 .get_proposal = _get_proposal,
2247 .set_proposal = _set_proposal,
2248 .get_id = _get_id,
2249 .get_my_host = _get_my_host,
2250 .set_my_host = _set_my_host,
2251 .get_other_host = _get_other_host,
2252 .set_other_host = _set_other_host,
2253 .set_message_id = _set_message_id,
2254 .float_ports = _float_ports,
2255 .update_hosts = _update_hosts,
2256 .get_my_id = _get_my_id,
2257 .set_my_id = _set_my_id,
2258 .get_other_id = _get_other_id,
2259 .set_other_id = _set_other_id,
2260 .get_other_eap_id = _get_other_eap_id,
2261 .enable_extension = _enable_extension,
2262 .supports_extension = _supports_extension,
2263 .set_condition = _set_condition,
2264 .has_condition = _has_condition,
2265 .set_pending_updates = _set_pending_updates,
2266 .get_pending_updates = _get_pending_updates,
2267 .create_peer_address_enumerator = _create_peer_address_enumerator,
2268 .add_peer_address = _add_peer_address,
2269 .clear_peer_addresses = _clear_peer_addresses,
2270 .has_mapping_changed = _has_mapping_changed,
2271 .retransmit = _retransmit,
2272 .delete = _delete_,
2273 .destroy = _destroy,
2274 .send_dpd = _send_dpd,
2275 .send_keepalive = _send_keepalive,
2276 .get_keymat = _get_keymat,
2277 .add_child_sa = _add_child_sa,
2278 .get_child_sa = _get_child_sa,
2279 .get_child_count = _get_child_count,
2280 .create_child_sa_enumerator = _create_child_sa_enumerator,
2281 .remove_child_sa = _remove_child_sa,
2282 .rekey_child_sa = _rekey_child_sa,
2283 .delete_child_sa = _delete_child_sa,
2284 .destroy_child_sa = _destroy_child_sa,
2285 .rekey = _rekey,
2286 .reauth = _reauth,
2287 .reestablish = _reestablish,
2288 .set_auth_lifetime = _set_auth_lifetime,
2289 .roam = _roam,
2290 .inherit = _inherit,
2291 .generate_message = _generate_message,
2292 .reset = _reset,
2293 .get_unique_id = _get_unique_id,
2294 .add_virtual_ip = _add_virtual_ip,
2295 .clear_virtual_ips = _clear_virtual_ips,
2296 .create_virtual_ip_enumerator = _create_virtual_ip_enumerator,
2297 .add_configuration_attribute = _add_configuration_attribute,
2298 .set_kmaddress = _set_kmaddress,
2299 .create_task_enumerator = _create_task_enumerator,
2300 .flush_queue = _flush_queue,
2301 .queue_task = _queue_task,
2302 #ifdef ME
2303 .act_as_mediation_server = _act_as_mediation_server,
2304 .get_server_reflexive_host = _get_server_reflexive_host,
2305 .set_server_reflexive_host = _set_server_reflexive_host,
2306 .get_connect_id = _get_connect_id,
2307 .initiate_mediation = _initiate_mediation,
2308 .initiate_mediated = _initiate_mediated,
2309 .relay = _relay,
2310 .callback = _callback,
2311 .respond = _respond,
2312 #endif /* ME */
2313 },
2314 .ike_sa_id = ike_sa_id->clone(ike_sa_id),
2315 .version = version,
2316 .my_host = host_create_any(AF_INET),
2317 .other_host = host_create_any(AF_INET),
2318 .my_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2319 .other_id = identification_create_from_encoding(ID_ANY, chunk_empty),
2320 .keymat = keymat_create(version, initiator),
2321 .state = IKE_CREATED,
2322 .stats[STAT_INBOUND] = time_monotonic(NULL),
2323 .stats[STAT_OUTBOUND] = time_monotonic(NULL),
2324 .my_auth = auth_cfg_create(),
2325 .other_auth = auth_cfg_create(),
2326 .my_auths = array_create(0, 0),
2327 .other_auths = array_create(0, 0),
2328 .attributes = array_create(sizeof(attribute_entry_t), 0),
2329 .unique_id = ref_get(&unique_id),
2330 .keepalive_interval = lib->settings->get_time(lib->settings,
2331 "%s.keep_alive", KEEPALIVE_INTERVAL, charon->name),
2332 .retry_initiate_interval = lib->settings->get_time(lib->settings,
2333 "%s.retry_initiate_interval", 0, charon->name),
2334 .flush_auth_cfg = lib->settings->get_bool(lib->settings,
2335 "%s.flush_auth_cfg", FALSE, charon->name),
2336 );
2337
2338 if (version == IKEV2)
2339 { /* always supported with IKEv2 */
2340 enable_extension(this, EXT_DPD);
2341 }
2342
2343 this->task_manager = task_manager_create(&this->public);
2344 this->my_host->set_port(this->my_host,
2345 charon->socket->get_port(charon->socket, FALSE));
2346
2347 if (!this->task_manager || !this->keymat)
2348 {
2349 DBG1(DBG_IKE, "IKE version %d not supported", this->version);
2350 destroy(this);
2351 return NULL;
2352 }
2353 return &this->public;
2354 }